Comparison of the Effects of ATP, Mg2+, and MgATP on the Release of Luteinizing Hormone-Releasing Hormone from Isolated Hypothalamic Granules
Abstract: The effect of ATP, Mg2+, or MgATP on the release of luteinizing hormone-releasing hormone (LH-RH) from hypothalamic granules was examined under in vitro conditions. Granules, isolated from adult male hypothalami, were incubated at 37°C in a buffered (pH 7.8) medium containing 0.15 m-KCl. T...
Ausführliche Beschreibung
Autor*in: |
Burrows, G. Howard [verfasserIn] Barnea, Ayalla [verfasserIn] |
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E-Artikel |
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Erschienen: |
Oxford, UK: Blackwell Publishing Ltd ; 1982 |
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Online-Ressource |
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2006 ; Blackwell Publishing Journal Backfiles 1879-2005 |
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Übergeordnetes Werk: |
In: Journal of neurochemistry - Oxford : Wiley-Blackwell, 1956, 38(1982), 2, Seite 0 |
Übergeordnetes Werk: |
volume:38 ; year:1982 ; number:2 ; pages:0 |
Links: |
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DOI / URN: |
10.1111/j.1471-4159.1982.tb08664.x |
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520 | |a Abstract: The effect of ATP, Mg2+, or MgATP on the release of luteinizing hormone-releasing hormone (LH-RH) from hypothalamic granules was examined under in vitro conditions. Granules, isolated from adult male hypothalami, were incubated at 37°C in a buffered (pH 7.8) medium containing 0.15 m-KCl. The addition of ATP to the incubation mixture did not stimulate the release of LH-RH. In contrast, the addition of MgATP stimulated the release of LH-RH, the release being 62% greater than control. The addition of Mg2+ to the incubated granules also stimulated the release of LH-RH. However, the magnitude of this Mg2+-stimulated release of LH–RH was significantly (P < 0.01) lower than that of the MgATP-stimulated release, indicating that ATP stimulates LH-RH release in a Mg2+-dependent manner. As both MgATP and Mg2+ alone stimulated LH-RH release, we characterized further these two release processes by incubating the granules under one of the following conditions: incubation at 4°C in a buffered medium containing 0.15 m-KCl or incubation at 37°C in a medium that does not contain KCl. Under these two incubation conditions, the MgATP-stimulated release of LH-RH was not manifested, whereas the Mg2+-stimulated release of LH-RH was manifested. On the basis of these differences, we propose that two different processes can lead to the release of LH-RH from isolated hypothalamic granules: one process involves ATP and Mg2+ (MgATP) and another process involves Mg2+ alone. | ||
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10.1111/j.1471-4159.1982.tb08664.x doi (DE-627)NLEJ240317793 DE-627 ger DE-627 rakwb Burrows, G. Howard verfasserin aut Comparison of the Effects of ATP, Mg2+, and MgATP on the Release of Luteinizing Hormone-Releasing Hormone from Isolated Hypothalamic Granules Oxford, UK Blackwell Publishing Ltd 1982 Online-Ressource nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Abstract: The effect of ATP, Mg2+, or MgATP on the release of luteinizing hormone-releasing hormone (LH-RH) from hypothalamic granules was examined under in vitro conditions. Granules, isolated from adult male hypothalami, were incubated at 37°C in a buffered (pH 7.8) medium containing 0.15 m-KCl. The addition of ATP to the incubation mixture did not stimulate the release of LH-RH. In contrast, the addition of MgATP stimulated the release of LH-RH, the release being 62% greater than control. The addition of Mg2+ to the incubated granules also stimulated the release of LH-RH. However, the magnitude of this Mg2+-stimulated release of LH–RH was significantly (P < 0.01) lower than that of the MgATP-stimulated release, indicating that ATP stimulates LH-RH release in a Mg2+-dependent manner. As both MgATP and Mg2+ alone stimulated LH-RH release, we characterized further these two release processes by incubating the granules under one of the following conditions: incubation at 4°C in a buffered medium containing 0.15 m-KCl or incubation at 37°C in a medium that does not contain KCl. Under these two incubation conditions, the MgATP-stimulated release of LH-RH was not manifested, whereas the Mg2+-stimulated release of LH-RH was manifested. On the basis of these differences, we propose that two different processes can lead to the release of LH-RH from isolated hypothalamic granules: one process involves ATP and Mg2+ (MgATP) and another process involves Mg2+ alone. 2006 Blackwell Publishing Journal Backfiles 1879-2005 |2006|||||||||| Luteinizing hormone-releasing hormone Barnea, Ayalla verfasserin aut In Journal of neurochemistry Oxford : Wiley-Blackwell, 1956 38(1982), 2, Seite 0 Online-Ressource (DE-627)NLEJ243927584 (DE-600)2020528-4 1471-4159 nnns volume:38 year:1982 number:2 pages:0 http://dx.doi.org/10.1111/j.1471-4159.1982.tb08664.x text/html Verlag Deutschlandweit zugänglich Volltext GBV_USEFLAG_U ZDB-1-DJB GBV_NL_ARTICLE AR 38 1982 2 0 |
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10.1111/j.1471-4159.1982.tb08664.x doi (DE-627)NLEJ240317793 DE-627 ger DE-627 rakwb Burrows, G. Howard verfasserin aut Comparison of the Effects of ATP, Mg2+, and MgATP on the Release of Luteinizing Hormone-Releasing Hormone from Isolated Hypothalamic Granules Oxford, UK Blackwell Publishing Ltd 1982 Online-Ressource nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Abstract: The effect of ATP, Mg2+, or MgATP on the release of luteinizing hormone-releasing hormone (LH-RH) from hypothalamic granules was examined under in vitro conditions. Granules, isolated from adult male hypothalami, were incubated at 37°C in a buffered (pH 7.8) medium containing 0.15 m-KCl. The addition of ATP to the incubation mixture did not stimulate the release of LH-RH. In contrast, the addition of MgATP stimulated the release of LH-RH, the release being 62% greater than control. The addition of Mg2+ to the incubated granules also stimulated the release of LH-RH. However, the magnitude of this Mg2+-stimulated release of LH–RH was significantly (P < 0.01) lower than that of the MgATP-stimulated release, indicating that ATP stimulates LH-RH release in a Mg2+-dependent manner. As both MgATP and Mg2+ alone stimulated LH-RH release, we characterized further these two release processes by incubating the granules under one of the following conditions: incubation at 4°C in a buffered medium containing 0.15 m-KCl or incubation at 37°C in a medium that does not contain KCl. Under these two incubation conditions, the MgATP-stimulated release of LH-RH was not manifested, whereas the Mg2+-stimulated release of LH-RH was manifested. On the basis of these differences, we propose that two different processes can lead to the release of LH-RH from isolated hypothalamic granules: one process involves ATP and Mg2+ (MgATP) and another process involves Mg2+ alone. 2006 Blackwell Publishing Journal Backfiles 1879-2005 |2006|||||||||| Luteinizing hormone-releasing hormone Barnea, Ayalla verfasserin aut In Journal of neurochemistry Oxford : Wiley-Blackwell, 1956 38(1982), 2, Seite 0 Online-Ressource (DE-627)NLEJ243927584 (DE-600)2020528-4 1471-4159 nnns volume:38 year:1982 number:2 pages:0 http://dx.doi.org/10.1111/j.1471-4159.1982.tb08664.x text/html Verlag Deutschlandweit zugänglich Volltext GBV_USEFLAG_U ZDB-1-DJB GBV_NL_ARTICLE AR 38 1982 2 0 |
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10.1111/j.1471-4159.1982.tb08664.x doi (DE-627)NLEJ240317793 DE-627 ger DE-627 rakwb Burrows, G. Howard verfasserin aut Comparison of the Effects of ATP, Mg2+, and MgATP on the Release of Luteinizing Hormone-Releasing Hormone from Isolated Hypothalamic Granules Oxford, UK Blackwell Publishing Ltd 1982 Online-Ressource nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Abstract: The effect of ATP, Mg2+, or MgATP on the release of luteinizing hormone-releasing hormone (LH-RH) from hypothalamic granules was examined under in vitro conditions. Granules, isolated from adult male hypothalami, were incubated at 37°C in a buffered (pH 7.8) medium containing 0.15 m-KCl. The addition of ATP to the incubation mixture did not stimulate the release of LH-RH. In contrast, the addition of MgATP stimulated the release of LH-RH, the release being 62% greater than control. The addition of Mg2+ to the incubated granules also stimulated the release of LH-RH. However, the magnitude of this Mg2+-stimulated release of LH–RH was significantly (P < 0.01) lower than that of the MgATP-stimulated release, indicating that ATP stimulates LH-RH release in a Mg2+-dependent manner. As both MgATP and Mg2+ alone stimulated LH-RH release, we characterized further these two release processes by incubating the granules under one of the following conditions: incubation at 4°C in a buffered medium containing 0.15 m-KCl or incubation at 37°C in a medium that does not contain KCl. Under these two incubation conditions, the MgATP-stimulated release of LH-RH was not manifested, whereas the Mg2+-stimulated release of LH-RH was manifested. On the basis of these differences, we propose that two different processes can lead to the release of LH-RH from isolated hypothalamic granules: one process involves ATP and Mg2+ (MgATP) and another process involves Mg2+ alone. 2006 Blackwell Publishing Journal Backfiles 1879-2005 |2006|||||||||| Luteinizing hormone-releasing hormone Barnea, Ayalla verfasserin aut In Journal of neurochemistry Oxford : Wiley-Blackwell, 1956 38(1982), 2, Seite 0 Online-Ressource (DE-627)NLEJ243927584 (DE-600)2020528-4 1471-4159 nnns volume:38 year:1982 number:2 pages:0 http://dx.doi.org/10.1111/j.1471-4159.1982.tb08664.x text/html Verlag Deutschlandweit zugänglich Volltext GBV_USEFLAG_U ZDB-1-DJB GBV_NL_ARTICLE AR 38 1982 2 0 |
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10.1111/j.1471-4159.1982.tb08664.x doi (DE-627)NLEJ240317793 DE-627 ger DE-627 rakwb Burrows, G. Howard verfasserin aut Comparison of the Effects of ATP, Mg2+, and MgATP on the Release of Luteinizing Hormone-Releasing Hormone from Isolated Hypothalamic Granules Oxford, UK Blackwell Publishing Ltd 1982 Online-Ressource nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Abstract: The effect of ATP, Mg2+, or MgATP on the release of luteinizing hormone-releasing hormone (LH-RH) from hypothalamic granules was examined under in vitro conditions. Granules, isolated from adult male hypothalami, were incubated at 37°C in a buffered (pH 7.8) medium containing 0.15 m-KCl. The addition of ATP to the incubation mixture did not stimulate the release of LH-RH. In contrast, the addition of MgATP stimulated the release of LH-RH, the release being 62% greater than control. The addition of Mg2+ to the incubated granules also stimulated the release of LH-RH. However, the magnitude of this Mg2+-stimulated release of LH–RH was significantly (P < 0.01) lower than that of the MgATP-stimulated release, indicating that ATP stimulates LH-RH release in a Mg2+-dependent manner. As both MgATP and Mg2+ alone stimulated LH-RH release, we characterized further these two release processes by incubating the granules under one of the following conditions: incubation at 4°C in a buffered medium containing 0.15 m-KCl or incubation at 37°C in a medium that does not contain KCl. Under these two incubation conditions, the MgATP-stimulated release of LH-RH was not manifested, whereas the Mg2+-stimulated release of LH-RH was manifested. On the basis of these differences, we propose that two different processes can lead to the release of LH-RH from isolated hypothalamic granules: one process involves ATP and Mg2+ (MgATP) and another process involves Mg2+ alone. 2006 Blackwell Publishing Journal Backfiles 1879-2005 |2006|||||||||| Luteinizing hormone-releasing hormone Barnea, Ayalla verfasserin aut In Journal of neurochemistry Oxford : Wiley-Blackwell, 1956 38(1982), 2, Seite 0 Online-Ressource (DE-627)NLEJ243927584 (DE-600)2020528-4 1471-4159 nnns volume:38 year:1982 number:2 pages:0 http://dx.doi.org/10.1111/j.1471-4159.1982.tb08664.x text/html Verlag Deutschlandweit zugänglich Volltext GBV_USEFLAG_U ZDB-1-DJB GBV_NL_ARTICLE AR 38 1982 2 0 |
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10.1111/j.1471-4159.1982.tb08664.x doi (DE-627)NLEJ240317793 DE-627 ger DE-627 rakwb Burrows, G. Howard verfasserin aut Comparison of the Effects of ATP, Mg2+, and MgATP on the Release of Luteinizing Hormone-Releasing Hormone from Isolated Hypothalamic Granules Oxford, UK Blackwell Publishing Ltd 1982 Online-Ressource nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Abstract: The effect of ATP, Mg2+, or MgATP on the release of luteinizing hormone-releasing hormone (LH-RH) from hypothalamic granules was examined under in vitro conditions. Granules, isolated from adult male hypothalami, were incubated at 37°C in a buffered (pH 7.8) medium containing 0.15 m-KCl. The addition of ATP to the incubation mixture did not stimulate the release of LH-RH. In contrast, the addition of MgATP stimulated the release of LH-RH, the release being 62% greater than control. The addition of Mg2+ to the incubated granules also stimulated the release of LH-RH. However, the magnitude of this Mg2+-stimulated release of LH–RH was significantly (P < 0.01) lower than that of the MgATP-stimulated release, indicating that ATP stimulates LH-RH release in a Mg2+-dependent manner. As both MgATP and Mg2+ alone stimulated LH-RH release, we characterized further these two release processes by incubating the granules under one of the following conditions: incubation at 4°C in a buffered medium containing 0.15 m-KCl or incubation at 37°C in a medium that does not contain KCl. Under these two incubation conditions, the MgATP-stimulated release of LH-RH was not manifested, whereas the Mg2+-stimulated release of LH-RH was manifested. On the basis of these differences, we propose that two different processes can lead to the release of LH-RH from isolated hypothalamic granules: one process involves ATP and Mg2+ (MgATP) and another process involves Mg2+ alone. 2006 Blackwell Publishing Journal Backfiles 1879-2005 |2006|||||||||| Luteinizing hormone-releasing hormone Barnea, Ayalla verfasserin aut In Journal of neurochemistry Oxford : Wiley-Blackwell, 1956 38(1982), 2, Seite 0 Online-Ressource (DE-627)NLEJ243927584 (DE-600)2020528-4 1471-4159 nnns volume:38 year:1982 number:2 pages:0 http://dx.doi.org/10.1111/j.1471-4159.1982.tb08664.x text/html Verlag Deutschlandweit zugänglich Volltext GBV_USEFLAG_U ZDB-1-DJB GBV_NL_ARTICLE AR 38 1982 2 0 |
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Comparison of the Effects of ATP, Mg2+, and MgATP on the Release of Luteinizing Hormone-Releasing Hormone from Isolated Hypothalamic Granules Luteinizing hormone-releasing hormone |
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Comparison of the Effects of ATP, Mg2+, and MgATP on the Release of Luteinizing Hormone-Releasing Hormone from Isolated Hypothalamic Granules |
abstract |
Abstract: The effect of ATP, Mg2+, or MgATP on the release of luteinizing hormone-releasing hormone (LH-RH) from hypothalamic granules was examined under in vitro conditions. Granules, isolated from adult male hypothalami, were incubated at 37°C in a buffered (pH 7.8) medium containing 0.15 m-KCl. The addition of ATP to the incubation mixture did not stimulate the release of LH-RH. In contrast, the addition of MgATP stimulated the release of LH-RH, the release being 62% greater than control. The addition of Mg2+ to the incubated granules also stimulated the release of LH-RH. However, the magnitude of this Mg2+-stimulated release of LH–RH was significantly (P < 0.01) lower than that of the MgATP-stimulated release, indicating that ATP stimulates LH-RH release in a Mg2+-dependent manner. As both MgATP and Mg2+ alone stimulated LH-RH release, we characterized further these two release processes by incubating the granules under one of the following conditions: incubation at 4°C in a buffered medium containing 0.15 m-KCl or incubation at 37°C in a medium that does not contain KCl. Under these two incubation conditions, the MgATP-stimulated release of LH-RH was not manifested, whereas the Mg2+-stimulated release of LH-RH was manifested. On the basis of these differences, we propose that two different processes can lead to the release of LH-RH from isolated hypothalamic granules: one process involves ATP and Mg2+ (MgATP) and another process involves Mg2+ alone. |
abstractGer |
Abstract: The effect of ATP, Mg2+, or MgATP on the release of luteinizing hormone-releasing hormone (LH-RH) from hypothalamic granules was examined under in vitro conditions. Granules, isolated from adult male hypothalami, were incubated at 37°C in a buffered (pH 7.8) medium containing 0.15 m-KCl. The addition of ATP to the incubation mixture did not stimulate the release of LH-RH. In contrast, the addition of MgATP stimulated the release of LH-RH, the release being 62% greater than control. The addition of Mg2+ to the incubated granules also stimulated the release of LH-RH. However, the magnitude of this Mg2+-stimulated release of LH–RH was significantly (P < 0.01) lower than that of the MgATP-stimulated release, indicating that ATP stimulates LH-RH release in a Mg2+-dependent manner. As both MgATP and Mg2+ alone stimulated LH-RH release, we characterized further these two release processes by incubating the granules under one of the following conditions: incubation at 4°C in a buffered medium containing 0.15 m-KCl or incubation at 37°C in a medium that does not contain KCl. Under these two incubation conditions, the MgATP-stimulated release of LH-RH was not manifested, whereas the Mg2+-stimulated release of LH-RH was manifested. On the basis of these differences, we propose that two different processes can lead to the release of LH-RH from isolated hypothalamic granules: one process involves ATP and Mg2+ (MgATP) and another process involves Mg2+ alone. |
abstract_unstemmed |
Abstract: The effect of ATP, Mg2+, or MgATP on the release of luteinizing hormone-releasing hormone (LH-RH) from hypothalamic granules was examined under in vitro conditions. Granules, isolated from adult male hypothalami, were incubated at 37°C in a buffered (pH 7.8) medium containing 0.15 m-KCl. The addition of ATP to the incubation mixture did not stimulate the release of LH-RH. In contrast, the addition of MgATP stimulated the release of LH-RH, the release being 62% greater than control. The addition of Mg2+ to the incubated granules also stimulated the release of LH-RH. However, the magnitude of this Mg2+-stimulated release of LH–RH was significantly (P < 0.01) lower than that of the MgATP-stimulated release, indicating that ATP stimulates LH-RH release in a Mg2+-dependent manner. As both MgATP and Mg2+ alone stimulated LH-RH release, we characterized further these two release processes by incubating the granules under one of the following conditions: incubation at 4°C in a buffered medium containing 0.15 m-KCl or incubation at 37°C in a medium that does not contain KCl. Under these two incubation conditions, the MgATP-stimulated release of LH-RH was not manifested, whereas the Mg2+-stimulated release of LH-RH was manifested. On the basis of these differences, we propose that two different processes can lead to the release of LH-RH from isolated hypothalamic granules: one process involves ATP and Mg2+ (MgATP) and another process involves Mg2+ alone. |
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title_short |
Comparison of the Effects of ATP, Mg2+, and MgATP on the Release of Luteinizing Hormone-Releasing Hormone from Isolated Hypothalamic Granules |
url |
http://dx.doi.org/10.1111/j.1471-4159.1982.tb08664.x |
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10.1111/j.1471-4159.1982.tb08664.x |
up_date |
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