The effect of purification of Ga-68-labeled exendin on in vivo distribution

Background Ga-labeled radiotracers are increasingly used for PET imaging. During the labeling procedure, formation of 68Ga-colloid may occur. Upon i.v. injection, 68Ga-colloid will accumulate rapidly in the liver, spleen, and bone marrow, resulting in reduced target-to-background ratios. In this stu...
Ausführliche Beschreibung

Gespeichert in:

Autor*in:	Brom, Maarten [verfasserIn] Franssen, Gerben M. [verfasserIn] Joosten, Lieke [verfasserIn] Gotthardt, Martin [verfasserIn] Boerman, Otto C. [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2016

Schlagwörter:	Ga Ga-hydroxide Purification Peptides Exendin

Übergeordnetes Werk:	Enthalten in: EJNMMI Research - Berlin : Springer, 2011, 6(2016), 1 vom: 12. Aug.
Übergeordnetes Werk:	volume:6 ; year:2016 ; number:1 ; day:12 ; month:08

Links:	Volltext

DOI / URN:	10.1186/s13550-016-0221-8

Katalog-ID:	SPR031781535

Internformat


LEADER	01000caa a22002652 4500
001	SPR031781535
003	DE-627
005	20230519140534.0
007	cr uuu---uuuuu
008	201007s2016 xx \|\|\|\|\|o 00\| \|\|eng c
024	7		\|a 10.1186/s13550-016-0221-8 \|2 doi
035			\|a (DE-627)SPR031781535
035			\|a (SPR)s13550-016-0221-8-e
040			\|a DE-627 \|b ger \|c DE-627 \|e rakwb
041			\|a eng
082	0	4	\|a 610 \|q ASE
100	1		\|a Brom, Maarten \|e verfasserin \|4 aut
245	1	4	\|a The effect of purification of Ga-68-labeled exendin on in vivo distribution
264		1	\|c 2016
336			\|a Text \|b txt \|2 rdacontent
337			\|a Computermedien \|b c \|2 rdamedia
338			\|a Online-Ressource \|b cr \|2 rdacarrier
520			\|a Background Ga-labeled radiotracers are increasingly used for PET imaging. During the labeling procedure, formation of 68Ga-colloid may occur. Upon i.v. injection, 68Ga-colloid will accumulate rapidly in the liver, spleen, and bone marrow, resulting in reduced target-to-background ratios. In this study, we applied a thin layer chromatography (TLC) method to measure colloid content and we studied the effect of the purification method on the in vivo characteristics of 68Ga-labeled DOTA-exendin-3. DOTA-exendin-3 was labeled with 68Ga, and the colloid content was measured by TLC on silica gel ITLC with two mobile phases. The labeling mixture was purified by gel filtration on a 5-ml G25M column, by reversed-phase high-performance liquid chromatography (RP-HPLC) using a $ C_{8} $ column or by solid phase extraction (SPE) on an HLB cartridge. The in vivo characteristics of the preparations were determined in BALB/c nude mice, and PET images were acquired 1 h p.i. using a microPET scanner. In these studies, unpurified 68Ga-DOTA-exendin-3 and 111In-DOTA-exendin-3 were used as a reference. Results The colloid content of 111In-DOTA-exendin-3 and unpurified, gel filtration, RP-HPLC- and SPE-purified 68Ga-DOTA exendin-3 was <3, 7, 9, <3, and <3 %, respectively. Unpurified 68Ga-DOTA exendin-3 showed high liver and spleen uptake. Gel filtration partly removed 68Ga-colloid from the preparation, resulting in moderate liver and spleen SPE-purified 68Ga-DOTA exendin-3 showed very low liver and spleen uptake, that was similar to that of RP-HPLC purified 68Ga-DOTA exendin-3. Conclusions We showed that the colloid content can be measured by TLC and that solid phase extraction and HPLC completely remove 68Ga-colloid from 68Ga-labeled tracer preparations, resulting in very low liver and spleen uptake. This study clearly shows the importance of removal of 68Ga-colloid from preparations.
650		4	\|a Ga \|7 (dpeaa)DE-He213
650		4	\|a Ga-hydroxide \|7 (dpeaa)DE-He213
650		4	\|a Purification \|7 (dpeaa)DE-He213
650		4	\|a Peptides \|7 (dpeaa)DE-He213
650		4	\|a Exendin \|7 (dpeaa)DE-He213
700	1		\|a Franssen, Gerben M. \|e verfasserin \|4 aut
700	1		\|a Joosten, Lieke \|e verfasserin \|4 aut
700	1		\|a Gotthardt, Martin \|e verfasserin \|4 aut
700	1		\|a Boerman, Otto C. \|e verfasserin \|4 aut
773	0	8	\|i Enthalten in \|t EJNMMI Research \|d Berlin : Springer, 2011 \|g 6(2016), 1 vom: 12. Aug. \|w (DE-627)664970265 \|w (DE-600)2619892-7 \|x 2191-219X \|7 nnns
773	1	8	\|g volume:6 \|g year:2016 \|g number:1 \|g day:12 \|g month:08
856	4	0	\|u https://dx.doi.org/10.1186/s13550-016-0221-8 \|z kostenfrei \|3 Volltext
912			\|a GBV_USEFLAG_A
912			\|a SYSFLAG_A
912			\|a GBV_SPRINGER
912			\|a SSG-OLC-PHA
912			\|a GBV_ILN_20
912			\|a GBV_ILN_22
912			\|a GBV_ILN_23
912			\|a GBV_ILN_24
912			\|a GBV_ILN_39
912			\|a GBV_ILN_40
912			\|a GBV_ILN_60
912			\|a GBV_ILN_62
912			\|a GBV_ILN_63
912			\|a GBV_ILN_65
912			\|a GBV_ILN_69
912			\|a GBV_ILN_73
912			\|a GBV_ILN_74
912			\|a GBV_ILN_95
912			\|a GBV_ILN_105
912			\|a GBV_ILN_110
912			\|a GBV_ILN_151
912			\|a GBV_ILN_161
912			\|a GBV_ILN_170
912			\|a GBV_ILN_206
912			\|a GBV_ILN_213
912			\|a GBV_ILN_230
912			\|a GBV_ILN_285
912			\|a GBV_ILN_293
912			\|a GBV_ILN_602
912			\|a GBV_ILN_2005
912			\|a GBV_ILN_2009
912			\|a GBV_ILN_2014
912			\|a GBV_ILN_2055
912			\|a GBV_ILN_2111
912			\|a GBV_ILN_4012
912			\|a GBV_ILN_4037
912			\|a GBV_ILN_4112
912			\|a GBV_ILN_4125
912			\|a GBV_ILN_4126
912			\|a GBV_ILN_4249
912			\|a GBV_ILN_4305
912			\|a GBV_ILN_4306
912			\|a GBV_ILN_4307
912			\|a GBV_ILN_4313
912			\|a GBV_ILN_4322
912			\|a GBV_ILN_4323
912			\|a GBV_ILN_4324
912			\|a GBV_ILN_4325
912			\|a GBV_ILN_4338
912			\|a GBV_ILN_4367
912			\|a GBV_ILN_4700
951			\|a AR
952			\|d 6 \|j 2016 \|e 1 \|b 12 \|c 08

Indexfelder

author_variant	m b mb g m f gm gmf l j lj m g mg o c b oc ocb
matchkey_str	article:2191219X:2016----::hefcoprfctoog6lbldxnio
hierarchy_sort_str	2016
publishDate	2016
allfields	10.1186/s13550-016-0221-8 doi (DE-627)SPR031781535 (SPR)s13550-016-0221-8-e DE-627 ger DE-627 rakwb eng 610 ASE Brom, Maarten verfasserin aut The effect of purification of Ga-68-labeled exendin on in vivo distribution 2016 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Background Ga-labeled radiotracers are increasingly used for PET imaging. During the labeling procedure, formation of 68Ga-colloid may occur. Upon i.v. injection, 68Ga-colloid will accumulate rapidly in the liver, spleen, and bone marrow, resulting in reduced target-to-background ratios. In this study, we applied a thin layer chromatography (TLC) method to measure colloid content and we studied the effect of the purification method on the in vivo characteristics of 68Ga-labeled DOTA-exendin-3. DOTA-exendin-3 was labeled with 68Ga, and the colloid content was measured by TLC on silica gel ITLC with two mobile phases. The labeling mixture was purified by gel filtration on a 5-ml G25M column, by reversed-phase high-performance liquid chromatography (RP-HPLC) using a $ C_{8} $ column or by solid phase extraction (SPE) on an HLB cartridge. The in vivo characteristics of the preparations were determined in BALB/c nude mice, and PET images were acquired 1 h p.i. using a microPET scanner. In these studies, unpurified 68Ga-DOTA-exendin-3 and 111In-DOTA-exendin-3 were used as a reference. Results The colloid content of 111In-DOTA-exendin-3 and unpurified, gel filtration, RP-HPLC- and SPE-purified 68Ga-DOTA exendin-3 was <3, 7, 9, <3, and <3 %, respectively. Unpurified 68Ga-DOTA exendin-3 showed high liver and spleen uptake. Gel filtration partly removed 68Ga-colloid from the preparation, resulting in moderate liver and spleen SPE-purified 68Ga-DOTA exendin-3 showed very low liver and spleen uptake, that was similar to that of RP-HPLC purified 68Ga-DOTA exendin-3. Conclusions We showed that the colloid content can be measured by TLC and that solid phase extraction and HPLC completely remove 68Ga-colloid from 68Ga-labeled tracer preparations, resulting in very low liver and spleen uptake. This study clearly shows the importance of removal of 68Ga-colloid from preparations. Ga (dpeaa)DE-He213 Ga-hydroxide (dpeaa)DE-He213 Purification (dpeaa)DE-He213 Peptides (dpeaa)DE-He213 Exendin (dpeaa)DE-He213 Franssen, Gerben M. verfasserin aut Joosten, Lieke verfasserin aut Gotthardt, Martin verfasserin aut Boerman, Otto C. verfasserin aut Enthalten in EJNMMI Research Berlin : Springer, 2011 6(2016), 1 vom: 12. Aug. (DE-627)664970265 (DE-600)2619892-7 2191-219X nnns volume:6 year:2016 number:1 day:12 month:08 https://dx.doi.org/10.1186/s13550-016-0221-8 kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2111 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 6 2016 1 12 08
spelling	10.1186/s13550-016-0221-8 doi (DE-627)SPR031781535 (SPR)s13550-016-0221-8-e DE-627 ger DE-627 rakwb eng 610 ASE Brom, Maarten verfasserin aut The effect of purification of Ga-68-labeled exendin on in vivo distribution 2016 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Background Ga-labeled radiotracers are increasingly used for PET imaging. During the labeling procedure, formation of 68Ga-colloid may occur. Upon i.v. injection, 68Ga-colloid will accumulate rapidly in the liver, spleen, and bone marrow, resulting in reduced target-to-background ratios. In this study, we applied a thin layer chromatography (TLC) method to measure colloid content and we studied the effect of the purification method on the in vivo characteristics of 68Ga-labeled DOTA-exendin-3. DOTA-exendin-3 was labeled with 68Ga, and the colloid content was measured by TLC on silica gel ITLC with two mobile phases. The labeling mixture was purified by gel filtration on a 5-ml G25M column, by reversed-phase high-performance liquid chromatography (RP-HPLC) using a $ C_{8} $ column or by solid phase extraction (SPE) on an HLB cartridge. The in vivo characteristics of the preparations were determined in BALB/c nude mice, and PET images were acquired 1 h p.i. using a microPET scanner. In these studies, unpurified 68Ga-DOTA-exendin-3 and 111In-DOTA-exendin-3 were used as a reference. Results The colloid content of 111In-DOTA-exendin-3 and unpurified, gel filtration, RP-HPLC- and SPE-purified 68Ga-DOTA exendin-3 was <3, 7, 9, <3, and <3 %, respectively. Unpurified 68Ga-DOTA exendin-3 showed high liver and spleen uptake. Gel filtration partly removed 68Ga-colloid from the preparation, resulting in moderate liver and spleen SPE-purified 68Ga-DOTA exendin-3 showed very low liver and spleen uptake, that was similar to that of RP-HPLC purified 68Ga-DOTA exendin-3. Conclusions We showed that the colloid content can be measured by TLC and that solid phase extraction and HPLC completely remove 68Ga-colloid from 68Ga-labeled tracer preparations, resulting in very low liver and spleen uptake. This study clearly shows the importance of removal of 68Ga-colloid from preparations. Ga (dpeaa)DE-He213 Ga-hydroxide (dpeaa)DE-He213 Purification (dpeaa)DE-He213 Peptides (dpeaa)DE-He213 Exendin (dpeaa)DE-He213 Franssen, Gerben M. verfasserin aut Joosten, Lieke verfasserin aut Gotthardt, Martin verfasserin aut Boerman, Otto C. verfasserin aut Enthalten in EJNMMI Research Berlin : Springer, 2011 6(2016), 1 vom: 12. Aug. (DE-627)664970265 (DE-600)2619892-7 2191-219X nnns volume:6 year:2016 number:1 day:12 month:08 https://dx.doi.org/10.1186/s13550-016-0221-8 kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2111 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 6 2016 1 12 08
allfields_unstemmed	10.1186/s13550-016-0221-8 doi (DE-627)SPR031781535 (SPR)s13550-016-0221-8-e DE-627 ger DE-627 rakwb eng 610 ASE Brom, Maarten verfasserin aut The effect of purification of Ga-68-labeled exendin on in vivo distribution 2016 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Background Ga-labeled radiotracers are increasingly used for PET imaging. During the labeling procedure, formation of 68Ga-colloid may occur. Upon i.v. injection, 68Ga-colloid will accumulate rapidly in the liver, spleen, and bone marrow, resulting in reduced target-to-background ratios. In this study, we applied a thin layer chromatography (TLC) method to measure colloid content and we studied the effect of the purification method on the in vivo characteristics of 68Ga-labeled DOTA-exendin-3. DOTA-exendin-3 was labeled with 68Ga, and the colloid content was measured by TLC on silica gel ITLC with two mobile phases. The labeling mixture was purified by gel filtration on a 5-ml G25M column, by reversed-phase high-performance liquid chromatography (RP-HPLC) using a $ C_{8} $ column or by solid phase extraction (SPE) on an HLB cartridge. The in vivo characteristics of the preparations were determined in BALB/c nude mice, and PET images were acquired 1 h p.i. using a microPET scanner. In these studies, unpurified 68Ga-DOTA-exendin-3 and 111In-DOTA-exendin-3 were used as a reference. Results The colloid content of 111In-DOTA-exendin-3 and unpurified, gel filtration, RP-HPLC- and SPE-purified 68Ga-DOTA exendin-3 was <3, 7, 9, <3, and <3 %, respectively. Unpurified 68Ga-DOTA exendin-3 showed high liver and spleen uptake. Gel filtration partly removed 68Ga-colloid from the preparation, resulting in moderate liver and spleen SPE-purified 68Ga-DOTA exendin-3 showed very low liver and spleen uptake, that was similar to that of RP-HPLC purified 68Ga-DOTA exendin-3. Conclusions We showed that the colloid content can be measured by TLC and that solid phase extraction and HPLC completely remove 68Ga-colloid from 68Ga-labeled tracer preparations, resulting in very low liver and spleen uptake. This study clearly shows the importance of removal of 68Ga-colloid from preparations. Ga (dpeaa)DE-He213 Ga-hydroxide (dpeaa)DE-He213 Purification (dpeaa)DE-He213 Peptides (dpeaa)DE-He213 Exendin (dpeaa)DE-He213 Franssen, Gerben M. verfasserin aut Joosten, Lieke verfasserin aut Gotthardt, Martin verfasserin aut Boerman, Otto C. verfasserin aut Enthalten in EJNMMI Research Berlin : Springer, 2011 6(2016), 1 vom: 12. Aug. (DE-627)664970265 (DE-600)2619892-7 2191-219X nnns volume:6 year:2016 number:1 day:12 month:08 https://dx.doi.org/10.1186/s13550-016-0221-8 kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2111 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 6 2016 1 12 08
allfieldsGer	10.1186/s13550-016-0221-8 doi (DE-627)SPR031781535 (SPR)s13550-016-0221-8-e DE-627 ger DE-627 rakwb eng 610 ASE Brom, Maarten verfasserin aut The effect of purification of Ga-68-labeled exendin on in vivo distribution 2016 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Background Ga-labeled radiotracers are increasingly used for PET imaging. During the labeling procedure, formation of 68Ga-colloid may occur. Upon i.v. injection, 68Ga-colloid will accumulate rapidly in the liver, spleen, and bone marrow, resulting in reduced target-to-background ratios. In this study, we applied a thin layer chromatography (TLC) method to measure colloid content and we studied the effect of the purification method on the in vivo characteristics of 68Ga-labeled DOTA-exendin-3. DOTA-exendin-3 was labeled with 68Ga, and the colloid content was measured by TLC on silica gel ITLC with two mobile phases. The labeling mixture was purified by gel filtration on a 5-ml G25M column, by reversed-phase high-performance liquid chromatography (RP-HPLC) using a $ C_{8} $ column or by solid phase extraction (SPE) on an HLB cartridge. The in vivo characteristics of the preparations were determined in BALB/c nude mice, and PET images were acquired 1 h p.i. using a microPET scanner. In these studies, unpurified 68Ga-DOTA-exendin-3 and 111In-DOTA-exendin-3 were used as a reference. Results The colloid content of 111In-DOTA-exendin-3 and unpurified, gel filtration, RP-HPLC- and SPE-purified 68Ga-DOTA exendin-3 was <3, 7, 9, <3, and <3 %, respectively. Unpurified 68Ga-DOTA exendin-3 showed high liver and spleen uptake. Gel filtration partly removed 68Ga-colloid from the preparation, resulting in moderate liver and spleen SPE-purified 68Ga-DOTA exendin-3 showed very low liver and spleen uptake, that was similar to that of RP-HPLC purified 68Ga-DOTA exendin-3. Conclusions We showed that the colloid content can be measured by TLC and that solid phase extraction and HPLC completely remove 68Ga-colloid from 68Ga-labeled tracer preparations, resulting in very low liver and spleen uptake. This study clearly shows the importance of removal of 68Ga-colloid from preparations. Ga (dpeaa)DE-He213 Ga-hydroxide (dpeaa)DE-He213 Purification (dpeaa)DE-He213 Peptides (dpeaa)DE-He213 Exendin (dpeaa)DE-He213 Franssen, Gerben M. verfasserin aut Joosten, Lieke verfasserin aut Gotthardt, Martin verfasserin aut Boerman, Otto C. verfasserin aut Enthalten in EJNMMI Research Berlin : Springer, 2011 6(2016), 1 vom: 12. Aug. (DE-627)664970265 (DE-600)2619892-7 2191-219X nnns volume:6 year:2016 number:1 day:12 month:08 https://dx.doi.org/10.1186/s13550-016-0221-8 kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2111 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 6 2016 1 12 08
allfieldsSound	10.1186/s13550-016-0221-8 doi (DE-627)SPR031781535 (SPR)s13550-016-0221-8-e DE-627 ger DE-627 rakwb eng 610 ASE Brom, Maarten verfasserin aut The effect of purification of Ga-68-labeled exendin on in vivo distribution 2016 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Background Ga-labeled radiotracers are increasingly used for PET imaging. During the labeling procedure, formation of 68Ga-colloid may occur. Upon i.v. injection, 68Ga-colloid will accumulate rapidly in the liver, spleen, and bone marrow, resulting in reduced target-to-background ratios. In this study, we applied a thin layer chromatography (TLC) method to measure colloid content and we studied the effect of the purification method on the in vivo characteristics of 68Ga-labeled DOTA-exendin-3. DOTA-exendin-3 was labeled with 68Ga, and the colloid content was measured by TLC on silica gel ITLC with two mobile phases. The labeling mixture was purified by gel filtration on a 5-ml G25M column, by reversed-phase high-performance liquid chromatography (RP-HPLC) using a $ C_{8} $ column or by solid phase extraction (SPE) on an HLB cartridge. The in vivo characteristics of the preparations were determined in BALB/c nude mice, and PET images were acquired 1 h p.i. using a microPET scanner. In these studies, unpurified 68Ga-DOTA-exendin-3 and 111In-DOTA-exendin-3 were used as a reference. Results The colloid content of 111In-DOTA-exendin-3 and unpurified, gel filtration, RP-HPLC- and SPE-purified 68Ga-DOTA exendin-3 was <3, 7, 9, <3, and <3 %, respectively. Unpurified 68Ga-DOTA exendin-3 showed high liver and spleen uptake. Gel filtration partly removed 68Ga-colloid from the preparation, resulting in moderate liver and spleen SPE-purified 68Ga-DOTA exendin-3 showed very low liver and spleen uptake, that was similar to that of RP-HPLC purified 68Ga-DOTA exendin-3. Conclusions We showed that the colloid content can be measured by TLC and that solid phase extraction and HPLC completely remove 68Ga-colloid from 68Ga-labeled tracer preparations, resulting in very low liver and spleen uptake. This study clearly shows the importance of removal of 68Ga-colloid from preparations. Ga (dpeaa)DE-He213 Ga-hydroxide (dpeaa)DE-He213 Purification (dpeaa)DE-He213 Peptides (dpeaa)DE-He213 Exendin (dpeaa)DE-He213 Franssen, Gerben M. verfasserin aut Joosten, Lieke verfasserin aut Gotthardt, Martin verfasserin aut Boerman, Otto C. verfasserin aut Enthalten in EJNMMI Research Berlin : Springer, 2011 6(2016), 1 vom: 12. Aug. (DE-627)664970265 (DE-600)2619892-7 2191-219X nnns volume:6 year:2016 number:1 day:12 month:08 https://dx.doi.org/10.1186/s13550-016-0221-8 kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2111 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 6 2016 1 12 08
language	English
source	Enthalten in EJNMMI Research 6(2016), 1 vom: 12. Aug. volume:6 year:2016 number:1 day:12 month:08
sourceStr	Enthalten in EJNMMI Research 6(2016), 1 vom: 12. Aug. volume:6 year:2016 number:1 day:12 month:08
format_phy_str_mv	Article
institution	findex.gbv.de
topic_facet	Ga Ga-hydroxide Purification Peptides Exendin
dewey-raw	610
isfreeaccess_bool	true
container_title	EJNMMI Research
authorswithroles_txt_mv	Brom, Maarten @@aut@@ Franssen, Gerben M. @@aut@@ Joosten, Lieke @@aut@@ Gotthardt, Martin @@aut@@ Boerman, Otto C. @@aut@@
publishDateDaySort_date	2016-08-12T00:00:00Z
hierarchy_top_id	664970265
dewey-sort	3610
id	SPR031781535
language_de	englisch
fullrecord	<?xml version="1.0" encoding="UTF-8"?><collection xmlns="http://www.loc.gov/MARC21/slim"><record><leader>01000caa a22002652 4500</leader><controlfield tag="001">SPR031781535</controlfield><controlfield tag="003">DE-627</controlfield><controlfield tag="005">20230519140534.0</controlfield><controlfield tag="007">cr uuu---uuuuu</controlfield><controlfield tag="008">201007s2016 xx \|\|\|\|\|o 00\| \|\|eng c</controlfield><datafield tag="024" ind1="7" ind2=" "><subfield code="a">10.1186/s13550-016-0221-8</subfield><subfield code="2">doi</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(DE-627)SPR031781535</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(SPR)s13550-016-0221-8-e</subfield></datafield><datafield tag="040" ind1=" " ind2=" "><subfield code="a">DE-627</subfield><subfield code="b">ger</subfield><subfield code="c">DE-627</subfield><subfield code="e">rakwb</subfield></datafield><datafield tag="041" ind1=" " ind2=" "><subfield code="a">eng</subfield></datafield><datafield tag="082" ind1="0" ind2="4"><subfield code="a">610</subfield><subfield code="q">ASE</subfield></datafield><datafield tag="100" ind1="1" ind2=" "><subfield code="a">Brom, Maarten</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="245" ind1="1" ind2="4"><subfield code="a">The effect of purification of Ga-68-labeled exendin on in vivo distribution</subfield></datafield><datafield tag="264" ind1=" " ind2="1"><subfield code="c">2016</subfield></datafield><datafield tag="336" ind1=" " ind2=" "><subfield code="a">Text</subfield><subfield code="b">txt</subfield><subfield code="2">rdacontent</subfield></datafield><datafield tag="337" ind1=" " ind2=" "><subfield code="a">Computermedien</subfield><subfield code="b">c</subfield><subfield code="2">rdamedia</subfield></datafield><datafield tag="338" ind1=" " ind2=" "><subfield code="a">Online-Ressource</subfield><subfield code="b">cr</subfield><subfield code="2">rdacarrier</subfield></datafield><datafield tag="520" ind1=" " ind2=" "><subfield code="a">Background Ga-labeled radiotracers are increasingly used for PET imaging. During the labeling procedure, formation of 68Ga-colloid may occur. Upon i.v. injection, 68Ga-colloid will accumulate rapidly in the liver, spleen, and bone marrow, resulting in reduced target-to-background ratios. In this study, we applied a thin layer chromatography (TLC) method to measure colloid content and we studied the effect of the purification method on the in vivo characteristics of 68Ga-labeled DOTA-exendin-3. DOTA-exendin-3 was labeled with 68Ga, and the colloid content was measured by TLC on silica gel ITLC with two mobile phases. The labeling mixture was purified by gel filtration on a 5-ml G25M column, by reversed-phase high-performance liquid chromatography (RP-HPLC) using a $ C_{8} $ column or by solid phase extraction (SPE) on an HLB cartridge. The in vivo characteristics of the preparations were determined in BALB/c nude mice, and PET images were acquired 1 h p.i. using a microPET scanner. In these studies, unpurified 68Ga-DOTA-exendin-3 and 111In-DOTA-exendin-3 were used as a reference. Results The colloid content of 111In-DOTA-exendin-3 and unpurified, gel filtration, RP-HPLC- and SPE-purified 68Ga-DOTA exendin-3 was <3, 7, 9, <3, and <3 %, respectively. Unpurified 68Ga-DOTA exendin-3 showed high liver and spleen uptake. Gel filtration partly removed 68Ga-colloid from the preparation, resulting in moderate liver and spleen SPE-purified 68Ga-DOTA exendin-3 showed very low liver and spleen uptake, that was similar to that of RP-HPLC purified 68Ga-DOTA exendin-3. Conclusions We showed that the colloid content can be measured by TLC and that solid phase extraction and HPLC completely remove 68Ga-colloid from 68Ga-labeled tracer preparations, resulting in very low liver and spleen uptake. This study clearly shows the importance of removal of 68Ga-colloid from preparations.</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Ga</subfield><subfield code="7">(dpeaa)DE-He213</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Ga-hydroxide</subfield><subfield code="7">(dpeaa)DE-He213</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Purification</subfield><subfield code="7">(dpeaa)DE-He213</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Peptides</subfield><subfield code="7">(dpeaa)DE-He213</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Exendin</subfield><subfield code="7">(dpeaa)DE-He213</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Franssen, Gerben M.</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Joosten, Lieke</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Gotthardt, Martin</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Boerman, Otto C.</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="773" ind1="0" ind2="8"><subfield code="i">Enthalten in</subfield><subfield code="t">EJNMMI Research</subfield><subfield code="d">Berlin : Springer, 2011</subfield><subfield code="g">6(2016), 1 vom: 12. Aug.</subfield><subfield code="w">(DE-627)664970265</subfield><subfield code="w">(DE-600)2619892-7</subfield><subfield code="x">2191-219X</subfield><subfield code="7">nnns</subfield></datafield><datafield tag="773" ind1="1" ind2="8"><subfield code="g">volume:6</subfield><subfield code="g">year:2016</subfield><subfield code="g">number:1</subfield><subfield code="g">day:12</subfield><subfield code="g">month:08</subfield></datafield><datafield tag="856" ind1="4" ind2="0"><subfield code="u">https://dx.doi.org/10.1186/s13550-016-0221-8</subfield><subfield code="z">kostenfrei</subfield><subfield code="3">Volltext</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_USEFLAG_A</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">SYSFLAG_A</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_SPRINGER</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">SSG-OLC-PHA</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_20</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_22</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_23</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_24</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_39</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_40</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_60</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_62</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_63</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_65</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_69</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_73</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_74</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_95</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_105</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_110</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_151</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_161</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_170</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_206</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_213</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_230</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_285</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_293</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_602</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2005</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2009</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2014</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2055</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2111</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4012</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4037</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4112</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4125</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4126</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4249</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4305</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4306</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4307</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4313</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4322</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4323</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4324</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4325</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4338</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4367</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4700</subfield></datafield><datafield tag="951" ind1=" " ind2=" "><subfield code="a">AR</subfield></datafield><datafield tag="952" ind1=" " ind2=" "><subfield code="d">6</subfield><subfield code="j">2016</subfield><subfield code="e">1</subfield><subfield code="b">12</subfield><subfield code="c">08</subfield></datafield></record></collection>
author	Brom, Maarten
spellingShingle	Brom, Maarten ddc 610 misc Ga misc Ga-hydroxide misc Purification misc Peptides misc Exendin The effect of purification of Ga-68-labeled exendin on in vivo distribution
authorStr	Brom, Maarten
ppnlink_with_tag_str_mv	@@773@@(DE-627)664970265
format	electronic Article
dewey-ones	610 - Medicine & health
delete_txt_mv	keep
author_role	aut aut aut aut aut
collection	springer
remote_str	true
illustrated	Not Illustrated
issn	2191-219X
topic_title	610 ASE The effect of purification of Ga-68-labeled exendin on in vivo distribution Ga (dpeaa)DE-He213 Ga-hydroxide (dpeaa)DE-He213 Purification (dpeaa)DE-He213 Peptides (dpeaa)DE-He213 Exendin (dpeaa)DE-He213
topic	ddc 610 misc Ga misc Ga-hydroxide misc Purification misc Peptides misc Exendin
topic_unstemmed	ddc 610 misc Ga misc Ga-hydroxide misc Purification misc Peptides misc Exendin
topic_browse	ddc 610 misc Ga misc Ga-hydroxide misc Purification misc Peptides misc Exendin
format_facet	Elektronische Aufsätze Aufsätze Elektronische Ressource
format_main_str_mv	Text Zeitschrift/Artikel
carriertype_str_mv	cr
hierarchy_parent_title	EJNMMI Research
hierarchy_parent_id	664970265
dewey-tens	610 - Medicine & health
hierarchy_top_title	EJNMMI Research
isfreeaccess_txt	true
familylinks_str_mv	(DE-627)664970265 (DE-600)2619892-7
title	The effect of purification of Ga-68-labeled exendin on in vivo distribution
ctrlnum	(DE-627)SPR031781535 (SPR)s13550-016-0221-8-e
title_full	The effect of purification of Ga-68-labeled exendin on in vivo distribution
author_sort	Brom, Maarten
journal	EJNMMI Research
journalStr	EJNMMI Research
lang_code	eng
isOA_bool	true
dewey-hundreds	600 - Technology
recordtype	marc
publishDateSort	2016
contenttype_str_mv	txt
author_browse	Brom, Maarten Franssen, Gerben M. Joosten, Lieke Gotthardt, Martin Boerman, Otto C.
container_volume	6
class	610 ASE
format_se	Elektronische Aufsätze
author-letter	Brom, Maarten
doi_str_mv	10.1186/s13550-016-0221-8
dewey-full	610
author2-role	verfasserin
title_sort	effect of purification of ga-68-labeled exendin on in vivo distribution
title_auth	The effect of purification of Ga-68-labeled exendin on in vivo distribution
abstract	Background Ga-labeled radiotracers are increasingly used for PET imaging. During the labeling procedure, formation of 68Ga-colloid may occur. Upon i.v. injection, 68Ga-colloid will accumulate rapidly in the liver, spleen, and bone marrow, resulting in reduced target-to-background ratios. In this study, we applied a thin layer chromatography (TLC) method to measure colloid content and we studied the effect of the purification method on the in vivo characteristics of 68Ga-labeled DOTA-exendin-3. DOTA-exendin-3 was labeled with 68Ga, and the colloid content was measured by TLC on silica gel ITLC with two mobile phases. The labeling mixture was purified by gel filtration on a 5-ml G25M column, by reversed-phase high-performance liquid chromatography (RP-HPLC) using a $ C_{8} $ column or by solid phase extraction (SPE) on an HLB cartridge. The in vivo characteristics of the preparations were determined in BALB/c nude mice, and PET images were acquired 1 h p.i. using a microPET scanner. In these studies, unpurified 68Ga-DOTA-exendin-3 and 111In-DOTA-exendin-3 were used as a reference. Results The colloid content of 111In-DOTA-exendin-3 and unpurified, gel filtration, RP-HPLC- and SPE-purified 68Ga-DOTA exendin-3 was <3, 7, 9, <3, and <3 %, respectively. Unpurified 68Ga-DOTA exendin-3 showed high liver and spleen uptake. Gel filtration partly removed 68Ga-colloid from the preparation, resulting in moderate liver and spleen SPE-purified 68Ga-DOTA exendin-3 showed very low liver and spleen uptake, that was similar to that of RP-HPLC purified 68Ga-DOTA exendin-3. Conclusions We showed that the colloid content can be measured by TLC and that solid phase extraction and HPLC completely remove 68Ga-colloid from 68Ga-labeled tracer preparations, resulting in very low liver and spleen uptake. This study clearly shows the importance of removal of 68Ga-colloid from preparations.
abstractGer	Background Ga-labeled radiotracers are increasingly used for PET imaging. During the labeling procedure, formation of 68Ga-colloid may occur. Upon i.v. injection, 68Ga-colloid will accumulate rapidly in the liver, spleen, and bone marrow, resulting in reduced target-to-background ratios. In this study, we applied a thin layer chromatography (TLC) method to measure colloid content and we studied the effect of the purification method on the in vivo characteristics of 68Ga-labeled DOTA-exendin-3. DOTA-exendin-3 was labeled with 68Ga, and the colloid content was measured by TLC on silica gel ITLC with two mobile phases. The labeling mixture was purified by gel filtration on a 5-ml G25M column, by reversed-phase high-performance liquid chromatography (RP-HPLC) using a $ C_{8} $ column or by solid phase extraction (SPE) on an HLB cartridge. The in vivo characteristics of the preparations were determined in BALB/c nude mice, and PET images were acquired 1 h p.i. using a microPET scanner. In these studies, unpurified 68Ga-DOTA-exendin-3 and 111In-DOTA-exendin-3 were used as a reference. Results The colloid content of 111In-DOTA-exendin-3 and unpurified, gel filtration, RP-HPLC- and SPE-purified 68Ga-DOTA exendin-3 was <3, 7, 9, <3, and <3 %, respectively. Unpurified 68Ga-DOTA exendin-3 showed high liver and spleen uptake. Gel filtration partly removed 68Ga-colloid from the preparation, resulting in moderate liver and spleen SPE-purified 68Ga-DOTA exendin-3 showed very low liver and spleen uptake, that was similar to that of RP-HPLC purified 68Ga-DOTA exendin-3. Conclusions We showed that the colloid content can be measured by TLC and that solid phase extraction and HPLC completely remove 68Ga-colloid from 68Ga-labeled tracer preparations, resulting in very low liver and spleen uptake. This study clearly shows the importance of removal of 68Ga-colloid from preparations.
abstract_unstemmed	Background Ga-labeled radiotracers are increasingly used for PET imaging. During the labeling procedure, formation of 68Ga-colloid may occur. Upon i.v. injection, 68Ga-colloid will accumulate rapidly in the liver, spleen, and bone marrow, resulting in reduced target-to-background ratios. In this study, we applied a thin layer chromatography (TLC) method to measure colloid content and we studied the effect of the purification method on the in vivo characteristics of 68Ga-labeled DOTA-exendin-3. DOTA-exendin-3 was labeled with 68Ga, and the colloid content was measured by TLC on silica gel ITLC with two mobile phases. The labeling mixture was purified by gel filtration on a 5-ml G25M column, by reversed-phase high-performance liquid chromatography (RP-HPLC) using a $ C_{8} $ column or by solid phase extraction (SPE) on an HLB cartridge. The in vivo characteristics of the preparations were determined in BALB/c nude mice, and PET images were acquired 1 h p.i. using a microPET scanner. In these studies, unpurified 68Ga-DOTA-exendin-3 and 111In-DOTA-exendin-3 were used as a reference. Results The colloid content of 111In-DOTA-exendin-3 and unpurified, gel filtration, RP-HPLC- and SPE-purified 68Ga-DOTA exendin-3 was <3, 7, 9, <3, and <3 %, respectively. Unpurified 68Ga-DOTA exendin-3 showed high liver and spleen uptake. Gel filtration partly removed 68Ga-colloid from the preparation, resulting in moderate liver and spleen SPE-purified 68Ga-DOTA exendin-3 showed very low liver and spleen uptake, that was similar to that of RP-HPLC purified 68Ga-DOTA exendin-3. Conclusions We showed that the colloid content can be measured by TLC and that solid phase extraction and HPLC completely remove 68Ga-colloid from 68Ga-labeled tracer preparations, resulting in very low liver and spleen uptake. This study clearly shows the importance of removal of 68Ga-colloid from preparations.
collection_details	GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2111 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700
container_issue	1
title_short	The effect of purification of Ga-68-labeled exendin on in vivo distribution
url	https://dx.doi.org/10.1186/s13550-016-0221-8
remote_bool	true
author2	Franssen, Gerben M. Joosten, Lieke Gotthardt, Martin Boerman, Otto C.
author2Str	Franssen, Gerben M. Joosten, Lieke Gotthardt, Martin Boerman, Otto C.
ppnlink	664970265
mediatype_str_mv	c
isOA_txt	true
hochschulschrift_bool	false
doi_str	10.1186/s13550-016-0221-8
up_date	2024-07-04T01:12:47.034Z
_version_	1803608986261389312
fullrecord_marcxml	<?xml version="1.0" encoding="UTF-8"?><collection xmlns="http://www.loc.gov/MARC21/slim"><record><leader>01000caa a22002652 4500</leader><controlfield tag="001">SPR031781535</controlfield><controlfield tag="003">DE-627</controlfield><controlfield tag="005">20230519140534.0</controlfield><controlfield tag="007">cr uuu---uuuuu</controlfield><controlfield tag="008">201007s2016 xx \|\|\|\|\|o 00\| \|\|eng c</controlfield><datafield tag="024" ind1="7" ind2=" "><subfield code="a">10.1186/s13550-016-0221-8</subfield><subfield code="2">doi</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(DE-627)SPR031781535</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(SPR)s13550-016-0221-8-e</subfield></datafield><datafield tag="040" ind1=" " ind2=" "><subfield code="a">DE-627</subfield><subfield code="b">ger</subfield><subfield code="c">DE-627</subfield><subfield code="e">rakwb</subfield></datafield><datafield tag="041" ind1=" " ind2=" "><subfield code="a">eng</subfield></datafield><datafield tag="082" ind1="0" ind2="4"><subfield code="a">610</subfield><subfield code="q">ASE</subfield></datafield><datafield tag="100" ind1="1" ind2=" "><subfield code="a">Brom, Maarten</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="245" ind1="1" ind2="4"><subfield code="a">The effect of purification of Ga-68-labeled exendin on in vivo distribution</subfield></datafield><datafield tag="264" ind1=" " ind2="1"><subfield code="c">2016</subfield></datafield><datafield tag="336" ind1=" " ind2=" "><subfield code="a">Text</subfield><subfield code="b">txt</subfield><subfield code="2">rdacontent</subfield></datafield><datafield tag="337" ind1=" " ind2=" "><subfield code="a">Computermedien</subfield><subfield code="b">c</subfield><subfield code="2">rdamedia</subfield></datafield><datafield tag="338" ind1=" " ind2=" "><subfield code="a">Online-Ressource</subfield><subfield code="b">cr</subfield><subfield code="2">rdacarrier</subfield></datafield><datafield tag="520" ind1=" " ind2=" "><subfield code="a">Background Ga-labeled radiotracers are increasingly used for PET imaging. During the labeling procedure, formation of 68Ga-colloid may occur. Upon i.v. injection, 68Ga-colloid will accumulate rapidly in the liver, spleen, and bone marrow, resulting in reduced target-to-background ratios. In this study, we applied a thin layer chromatography (TLC) method to measure colloid content and we studied the effect of the purification method on the in vivo characteristics of 68Ga-labeled DOTA-exendin-3. DOTA-exendin-3 was labeled with 68Ga, and the colloid content was measured by TLC on silica gel ITLC with two mobile phases. The labeling mixture was purified by gel filtration on a 5-ml G25M column, by reversed-phase high-performance liquid chromatography (RP-HPLC) using a $ C_{8} $ column or by solid phase extraction (SPE) on an HLB cartridge. The in vivo characteristics of the preparations were determined in BALB/c nude mice, and PET images were acquired 1 h p.i. using a microPET scanner. In these studies, unpurified 68Ga-DOTA-exendin-3 and 111In-DOTA-exendin-3 were used as a reference. Results The colloid content of 111In-DOTA-exendin-3 and unpurified, gel filtration, RP-HPLC- and SPE-purified 68Ga-DOTA exendin-3 was <3, 7, 9, <3, and <3 %, respectively. Unpurified 68Ga-DOTA exendin-3 showed high liver and spleen uptake. Gel filtration partly removed 68Ga-colloid from the preparation, resulting in moderate liver and spleen SPE-purified 68Ga-DOTA exendin-3 showed very low liver and spleen uptake, that was similar to that of RP-HPLC purified 68Ga-DOTA exendin-3. Conclusions We showed that the colloid content can be measured by TLC and that solid phase extraction and HPLC completely remove 68Ga-colloid from 68Ga-labeled tracer preparations, resulting in very low liver and spleen uptake. This study clearly shows the importance of removal of 68Ga-colloid from preparations.</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Ga</subfield><subfield code="7">(dpeaa)DE-He213</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Ga-hydroxide</subfield><subfield code="7">(dpeaa)DE-He213</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Purification</subfield><subfield code="7">(dpeaa)DE-He213</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Peptides</subfield><subfield code="7">(dpeaa)DE-He213</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Exendin</subfield><subfield code="7">(dpeaa)DE-He213</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Franssen, Gerben M.</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Joosten, Lieke</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Gotthardt, Martin</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Boerman, Otto C.</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="773" ind1="0" ind2="8"><subfield code="i">Enthalten in</subfield><subfield code="t">EJNMMI Research</subfield><subfield code="d">Berlin : Springer, 2011</subfield><subfield code="g">6(2016), 1 vom: 12. Aug.</subfield><subfield code="w">(DE-627)664970265</subfield><subfield code="w">(DE-600)2619892-7</subfield><subfield code="x">2191-219X</subfield><subfield code="7">nnns</subfield></datafield><datafield tag="773" ind1="1" ind2="8"><subfield code="g">volume:6</subfield><subfield code="g">year:2016</subfield><subfield code="g">number:1</subfield><subfield code="g">day:12</subfield><subfield code="g">month:08</subfield></datafield><datafield tag="856" ind1="4" ind2="0"><subfield code="u">https://dx.doi.org/10.1186/s13550-016-0221-8</subfield><subfield code="z">kostenfrei</subfield><subfield code="3">Volltext</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_USEFLAG_A</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">SYSFLAG_A</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_SPRINGER</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">SSG-OLC-PHA</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_20</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_22</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_23</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_24</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_39</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_40</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_60</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_62</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_63</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_65</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_69</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_73</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_74</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_95</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_105</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_110</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_151</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_161</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_170</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_206</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_213</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_230</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_285</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_293</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_602</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2005</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2009</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2014</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2055</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2111</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4012</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4037</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4112</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4125</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4126</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4249</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4305</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4306</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4307</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4313</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4322</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4323</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4324</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4325</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4338</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4367</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4700</subfield></datafield><datafield tag="951" ind1=" " ind2=" "><subfield code="a">AR</subfield></datafield><datafield tag="952" ind1=" " ind2=" "><subfield code="d">6</subfield><subfield code="j">2016</subfield><subfield code="e">1</subfield><subfield code="b">12</subfield><subfield code="c">08</subfield></datafield></record></collection>
score	7.4017067

Nicht das Richtige dabei?

Schreiben Sie uns!

The effect of purification of Ga-68-labeled exendin on in vivo distribution

Nicht das Richtige dabei?

Zugang & Verfügbarkeit

Vorhandene Bände

Nicht das Richtige dabei?