Bicuculline enhances the corticosterone secretion induced by lipopolysaccharide and interleukin-1α in male rats
Abstract Lipopolysaccharide (LPS)-induced inflammatory stress activates the hypothalamus-pituitary-adrenal (HPA) function. Interleukin-I (IL-1) is one of the key factors during this event; however, the mechanisms mediating IL-1 stimulation of HPA axis are still unclear. The present study evaluated t...
Ausführliche Beschreibung
Autor*in: |
Guo, A. L. [verfasserIn] |
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Format: |
E-Artikel |
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Sprache: |
Englisch |
Erschienen: |
1996 |
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Anmerkung: |
© Italian Society of Endocrinology (SIE) 1996 |
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Übergeordnetes Werk: |
Enthalten in: Journal of endocrinological investigation - [S. l.] : Springer, 1978, 19(1996), 2 vom: Feb., Seite 83-87 |
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Übergeordnetes Werk: |
volume:19 ; year:1996 ; number:2 ; month:02 ; pages:83-87 |
Links: |
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DOI / URN: |
10.1007/BF03349841 |
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SPR036816590 |
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520 | |a Abstract Lipopolysaccharide (LPS)-induced inflammatory stress activates the hypothalamus-pituitary-adrenal (HPA) function. Interleukin-I (IL-1) is one of the key factors during this event; however, the mechanisms mediating IL-1 stimulation of HPA axis are still unclear. The present study evaluated the possible involvement of γ-aminobutyric acid (GABA) in LPS-induced activation of HPA axis in adult male rats. In addition, the possible existence of diurnal changes of LPS-induced HPA axis activity was also investigated. Bicuculline (0.8 mg/kg BW), a GABA-A receptor antagonist and GABA (1 g/kg BW) were intraperitoneally (ip) injected 15 min before LPS (2 mg/kg BW, ip) or recombinant human IL-1α (μg/rat) administration in intact rats. Control animals received an equivalent volume of 0.9% saline. Rats were sacrificed at 60 min or 90 min after LPS, or IL-1α or saline injection. Plasma corticosterone levels were measured by radioimmunoassay. Results showed that pretreatment with bicuculline enhanced both LPS- and IL-1-induced corticosterone secretion; while pretreatment with GABA significantly reduced the LPS-stimulated corticosterone release (p<0.05, vs LPS alone). The effect is dependent on the time of sampling and such effect of bicuculline or GABA was not observed when rats were stimulated in the evening. In addition, the maximal changes of plasma corticosterone following LPS administration in the evening were significantly lower than in the morning (p<0.01). The present study provides evidence that GABA is involved, at least in part, in the neuroendocrine regulation of LPS/interleukin-1a-induced corticosterone secretion via GABA-A receptor in rats. In addition, the response of plasma corticosterone to LPS has a diurnal variation, which corresponds to a diurnal change of GABAergic modulation of the immunoneu-roendocrine response. | ||
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10.1007/BF03349841 doi (DE-627)SPR036816590 (SPR)BF03349841-e DE-627 ger DE-627 rakwb eng Guo, A. L. verfasserin aut Bicuculline enhances the corticosterone secretion induced by lipopolysaccharide and interleukin-1α in male rats 1996 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Italian Society of Endocrinology (SIE) 1996 Abstract Lipopolysaccharide (LPS)-induced inflammatory stress activates the hypothalamus-pituitary-adrenal (HPA) function. Interleukin-I (IL-1) is one of the key factors during this event; however, the mechanisms mediating IL-1 stimulation of HPA axis are still unclear. The present study evaluated the possible involvement of γ-aminobutyric acid (GABA) in LPS-induced activation of HPA axis in adult male rats. In addition, the possible existence of diurnal changes of LPS-induced HPA axis activity was also investigated. Bicuculline (0.8 mg/kg BW), a GABA-A receptor antagonist and GABA (1 g/kg BW) were intraperitoneally (ip) injected 15 min before LPS (2 mg/kg BW, ip) or recombinant human IL-1α (μg/rat) administration in intact rats. Control animals received an equivalent volume of 0.9% saline. Rats were sacrificed at 60 min or 90 min after LPS, or IL-1α or saline injection. Plasma corticosterone levels were measured by radioimmunoassay. Results showed that pretreatment with bicuculline enhanced both LPS- and IL-1-induced corticosterone secretion; while pretreatment with GABA significantly reduced the LPS-stimulated corticosterone release (p<0.05, vs LPS alone). The effect is dependent on the time of sampling and such effect of bicuculline or GABA was not observed when rats were stimulated in the evening. In addition, the maximal changes of plasma corticosterone following LPS administration in the evening were significantly lower than in the morning (p<0.01). The present study provides evidence that GABA is involved, at least in part, in the neuroendocrine regulation of LPS/interleukin-1a-induced corticosterone secretion via GABA-A receptor in rats. In addition, the response of plasma corticosterone to LPS has a diurnal variation, which corresponds to a diurnal change of GABAergic modulation of the immunoneu-roendocrine response. Petraglia, R. aut Nappi, R. E. aut Criscuolo, M. aut Ficarra, G. aut Salvestroni, C. aut Genazzani, A. D. aut Trentini, G. P. aut Genazzani, Andrea R. aut Enthalten in Journal of endocrinological investigation [S. l.] : Springer, 1978 19(1996), 2 vom: Feb., Seite 83-87 (DE-627)369556267 (DE-600)2119482-8 1720-8386 nnns volume:19 year:1996 number:2 month:02 pages:83-87 https://dx.doi.org/10.1007/BF03349841 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_702 GBV_ILN_2190 AR 19 1996 2 02 83-87 |
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10.1007/BF03349841 doi (DE-627)SPR036816590 (SPR)BF03349841-e DE-627 ger DE-627 rakwb eng Guo, A. L. verfasserin aut Bicuculline enhances the corticosterone secretion induced by lipopolysaccharide and interleukin-1α in male rats 1996 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Italian Society of Endocrinology (SIE) 1996 Abstract Lipopolysaccharide (LPS)-induced inflammatory stress activates the hypothalamus-pituitary-adrenal (HPA) function. Interleukin-I (IL-1) is one of the key factors during this event; however, the mechanisms mediating IL-1 stimulation of HPA axis are still unclear. The present study evaluated the possible involvement of γ-aminobutyric acid (GABA) in LPS-induced activation of HPA axis in adult male rats. In addition, the possible existence of diurnal changes of LPS-induced HPA axis activity was also investigated. Bicuculline (0.8 mg/kg BW), a GABA-A receptor antagonist and GABA (1 g/kg BW) were intraperitoneally (ip) injected 15 min before LPS (2 mg/kg BW, ip) or recombinant human IL-1α (μg/rat) administration in intact rats. Control animals received an equivalent volume of 0.9% saline. Rats were sacrificed at 60 min or 90 min after LPS, or IL-1α or saline injection. Plasma corticosterone levels were measured by radioimmunoassay. Results showed that pretreatment with bicuculline enhanced both LPS- and IL-1-induced corticosterone secretion; while pretreatment with GABA significantly reduced the LPS-stimulated corticosterone release (p<0.05, vs LPS alone). The effect is dependent on the time of sampling and such effect of bicuculline or GABA was not observed when rats were stimulated in the evening. In addition, the maximal changes of plasma corticosterone following LPS administration in the evening were significantly lower than in the morning (p<0.01). The present study provides evidence that GABA is involved, at least in part, in the neuroendocrine regulation of LPS/interleukin-1a-induced corticosterone secretion via GABA-A receptor in rats. In addition, the response of plasma corticosterone to LPS has a diurnal variation, which corresponds to a diurnal change of GABAergic modulation of the immunoneu-roendocrine response. Petraglia, R. aut Nappi, R. E. aut Criscuolo, M. aut Ficarra, G. aut Salvestroni, C. aut Genazzani, A. D. aut Trentini, G. P. aut Genazzani, Andrea R. aut Enthalten in Journal of endocrinological investigation [S. l.] : Springer, 1978 19(1996), 2 vom: Feb., Seite 83-87 (DE-627)369556267 (DE-600)2119482-8 1720-8386 nnns volume:19 year:1996 number:2 month:02 pages:83-87 https://dx.doi.org/10.1007/BF03349841 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_702 GBV_ILN_2190 AR 19 1996 2 02 83-87 |
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10.1007/BF03349841 doi (DE-627)SPR036816590 (SPR)BF03349841-e DE-627 ger DE-627 rakwb eng Guo, A. L. verfasserin aut Bicuculline enhances the corticosterone secretion induced by lipopolysaccharide and interleukin-1α in male rats 1996 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Italian Society of Endocrinology (SIE) 1996 Abstract Lipopolysaccharide (LPS)-induced inflammatory stress activates the hypothalamus-pituitary-adrenal (HPA) function. Interleukin-I (IL-1) is one of the key factors during this event; however, the mechanisms mediating IL-1 stimulation of HPA axis are still unclear. The present study evaluated the possible involvement of γ-aminobutyric acid (GABA) in LPS-induced activation of HPA axis in adult male rats. In addition, the possible existence of diurnal changes of LPS-induced HPA axis activity was also investigated. Bicuculline (0.8 mg/kg BW), a GABA-A receptor antagonist and GABA (1 g/kg BW) were intraperitoneally (ip) injected 15 min before LPS (2 mg/kg BW, ip) or recombinant human IL-1α (μg/rat) administration in intact rats. Control animals received an equivalent volume of 0.9% saline. Rats were sacrificed at 60 min or 90 min after LPS, or IL-1α or saline injection. Plasma corticosterone levels were measured by radioimmunoassay. Results showed that pretreatment with bicuculline enhanced both LPS- and IL-1-induced corticosterone secretion; while pretreatment with GABA significantly reduced the LPS-stimulated corticosterone release (p<0.05, vs LPS alone). The effect is dependent on the time of sampling and such effect of bicuculline or GABA was not observed when rats were stimulated in the evening. In addition, the maximal changes of plasma corticosterone following LPS administration in the evening were significantly lower than in the morning (p<0.01). The present study provides evidence that GABA is involved, at least in part, in the neuroendocrine regulation of LPS/interleukin-1a-induced corticosterone secretion via GABA-A receptor in rats. In addition, the response of plasma corticosterone to LPS has a diurnal variation, which corresponds to a diurnal change of GABAergic modulation of the immunoneu-roendocrine response. Petraglia, R. aut Nappi, R. E. aut Criscuolo, M. aut Ficarra, G. aut Salvestroni, C. aut Genazzani, A. D. aut Trentini, G. P. aut Genazzani, Andrea R. aut Enthalten in Journal of endocrinological investigation [S. l.] : Springer, 1978 19(1996), 2 vom: Feb., Seite 83-87 (DE-627)369556267 (DE-600)2119482-8 1720-8386 nnns volume:19 year:1996 number:2 month:02 pages:83-87 https://dx.doi.org/10.1007/BF03349841 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_702 GBV_ILN_2190 AR 19 1996 2 02 83-87 |
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10.1007/BF03349841 doi (DE-627)SPR036816590 (SPR)BF03349841-e DE-627 ger DE-627 rakwb eng Guo, A. L. verfasserin aut Bicuculline enhances the corticosterone secretion induced by lipopolysaccharide and interleukin-1α in male rats 1996 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Italian Society of Endocrinology (SIE) 1996 Abstract Lipopolysaccharide (LPS)-induced inflammatory stress activates the hypothalamus-pituitary-adrenal (HPA) function. Interleukin-I (IL-1) is one of the key factors during this event; however, the mechanisms mediating IL-1 stimulation of HPA axis are still unclear. The present study evaluated the possible involvement of γ-aminobutyric acid (GABA) in LPS-induced activation of HPA axis in adult male rats. In addition, the possible existence of diurnal changes of LPS-induced HPA axis activity was also investigated. Bicuculline (0.8 mg/kg BW), a GABA-A receptor antagonist and GABA (1 g/kg BW) were intraperitoneally (ip) injected 15 min before LPS (2 mg/kg BW, ip) or recombinant human IL-1α (μg/rat) administration in intact rats. Control animals received an equivalent volume of 0.9% saline. Rats were sacrificed at 60 min or 90 min after LPS, or IL-1α or saline injection. Plasma corticosterone levels were measured by radioimmunoassay. Results showed that pretreatment with bicuculline enhanced both LPS- and IL-1-induced corticosterone secretion; while pretreatment with GABA significantly reduced the LPS-stimulated corticosterone release (p<0.05, vs LPS alone). The effect is dependent on the time of sampling and such effect of bicuculline or GABA was not observed when rats were stimulated in the evening. In addition, the maximal changes of plasma corticosterone following LPS administration in the evening were significantly lower than in the morning (p<0.01). The present study provides evidence that GABA is involved, at least in part, in the neuroendocrine regulation of LPS/interleukin-1a-induced corticosterone secretion via GABA-A receptor in rats. In addition, the response of plasma corticosterone to LPS has a diurnal variation, which corresponds to a diurnal change of GABAergic modulation of the immunoneu-roendocrine response. Petraglia, R. aut Nappi, R. E. aut Criscuolo, M. aut Ficarra, G. aut Salvestroni, C. aut Genazzani, A. D. aut Trentini, G. P. aut Genazzani, Andrea R. aut Enthalten in Journal of endocrinological investigation [S. l.] : Springer, 1978 19(1996), 2 vom: Feb., Seite 83-87 (DE-627)369556267 (DE-600)2119482-8 1720-8386 nnns volume:19 year:1996 number:2 month:02 pages:83-87 https://dx.doi.org/10.1007/BF03349841 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_702 GBV_ILN_2190 AR 19 1996 2 02 83-87 |
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10.1007/BF03349841 doi (DE-627)SPR036816590 (SPR)BF03349841-e DE-627 ger DE-627 rakwb eng Guo, A. L. verfasserin aut Bicuculline enhances the corticosterone secretion induced by lipopolysaccharide and interleukin-1α in male rats 1996 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Italian Society of Endocrinology (SIE) 1996 Abstract Lipopolysaccharide (LPS)-induced inflammatory stress activates the hypothalamus-pituitary-adrenal (HPA) function. Interleukin-I (IL-1) is one of the key factors during this event; however, the mechanisms mediating IL-1 stimulation of HPA axis are still unclear. The present study evaluated the possible involvement of γ-aminobutyric acid (GABA) in LPS-induced activation of HPA axis in adult male rats. In addition, the possible existence of diurnal changes of LPS-induced HPA axis activity was also investigated. Bicuculline (0.8 mg/kg BW), a GABA-A receptor antagonist and GABA (1 g/kg BW) were intraperitoneally (ip) injected 15 min before LPS (2 mg/kg BW, ip) or recombinant human IL-1α (μg/rat) administration in intact rats. Control animals received an equivalent volume of 0.9% saline. Rats were sacrificed at 60 min or 90 min after LPS, or IL-1α or saline injection. Plasma corticosterone levels were measured by radioimmunoassay. Results showed that pretreatment with bicuculline enhanced both LPS- and IL-1-induced corticosterone secretion; while pretreatment with GABA significantly reduced the LPS-stimulated corticosterone release (p<0.05, vs LPS alone). The effect is dependent on the time of sampling and such effect of bicuculline or GABA was not observed when rats were stimulated in the evening. In addition, the maximal changes of plasma corticosterone following LPS administration in the evening were significantly lower than in the morning (p<0.01). The present study provides evidence that GABA is involved, at least in part, in the neuroendocrine regulation of LPS/interleukin-1a-induced corticosterone secretion via GABA-A receptor in rats. In addition, the response of plasma corticosterone to LPS has a diurnal variation, which corresponds to a diurnal change of GABAergic modulation of the immunoneu-roendocrine response. Petraglia, R. aut Nappi, R. E. aut Criscuolo, M. aut Ficarra, G. aut Salvestroni, C. aut Genazzani, A. D. aut Trentini, G. P. aut Genazzani, Andrea R. aut Enthalten in Journal of endocrinological investigation [S. l.] : Springer, 1978 19(1996), 2 vom: Feb., Seite 83-87 (DE-627)369556267 (DE-600)2119482-8 1720-8386 nnns volume:19 year:1996 number:2 month:02 pages:83-87 https://dx.doi.org/10.1007/BF03349841 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_702 GBV_ILN_2190 AR 19 1996 2 02 83-87 |
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Bicuculline enhances the corticosterone secretion induced by lipopolysaccharide and interleukin-1α in male rats |
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Bicuculline enhances the corticosterone secretion induced by lipopolysaccharide and interleukin-1α in male rats |
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Bicuculline enhances the corticosterone secretion induced by lipopolysaccharide and interleukin-1α in male rats |
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Guo, A. L. |
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Journal of endocrinological investigation |
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1996 |
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Guo, A. L. Petraglia, R. Nappi, R. E. Criscuolo, M. Ficarra, G. Salvestroni, C. Genazzani, A. D. Trentini, G. P. Genazzani, Andrea R. |
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Guo, A. L. |
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10.1007/BF03349841 |
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bicuculline enhances the corticosterone secretion induced by lipopolysaccharide and interleukin-1α in male rats |
title_auth |
Bicuculline enhances the corticosterone secretion induced by lipopolysaccharide and interleukin-1α in male rats |
abstract |
Abstract Lipopolysaccharide (LPS)-induced inflammatory stress activates the hypothalamus-pituitary-adrenal (HPA) function. Interleukin-I (IL-1) is one of the key factors during this event; however, the mechanisms mediating IL-1 stimulation of HPA axis are still unclear. The present study evaluated the possible involvement of γ-aminobutyric acid (GABA) in LPS-induced activation of HPA axis in adult male rats. In addition, the possible existence of diurnal changes of LPS-induced HPA axis activity was also investigated. Bicuculline (0.8 mg/kg BW), a GABA-A receptor antagonist and GABA (1 g/kg BW) were intraperitoneally (ip) injected 15 min before LPS (2 mg/kg BW, ip) or recombinant human IL-1α (μg/rat) administration in intact rats. Control animals received an equivalent volume of 0.9% saline. Rats were sacrificed at 60 min or 90 min after LPS, or IL-1α or saline injection. Plasma corticosterone levels were measured by radioimmunoassay. Results showed that pretreatment with bicuculline enhanced both LPS- and IL-1-induced corticosterone secretion; while pretreatment with GABA significantly reduced the LPS-stimulated corticosterone release (p<0.05, vs LPS alone). The effect is dependent on the time of sampling and such effect of bicuculline or GABA was not observed when rats were stimulated in the evening. In addition, the maximal changes of plasma corticosterone following LPS administration in the evening were significantly lower than in the morning (p<0.01). The present study provides evidence that GABA is involved, at least in part, in the neuroendocrine regulation of LPS/interleukin-1a-induced corticosterone secretion via GABA-A receptor in rats. In addition, the response of plasma corticosterone to LPS has a diurnal variation, which corresponds to a diurnal change of GABAergic modulation of the immunoneu-roendocrine response. © Italian Society of Endocrinology (SIE) 1996 |
abstractGer |
Abstract Lipopolysaccharide (LPS)-induced inflammatory stress activates the hypothalamus-pituitary-adrenal (HPA) function. Interleukin-I (IL-1) is one of the key factors during this event; however, the mechanisms mediating IL-1 stimulation of HPA axis are still unclear. The present study evaluated the possible involvement of γ-aminobutyric acid (GABA) in LPS-induced activation of HPA axis in adult male rats. In addition, the possible existence of diurnal changes of LPS-induced HPA axis activity was also investigated. Bicuculline (0.8 mg/kg BW), a GABA-A receptor antagonist and GABA (1 g/kg BW) were intraperitoneally (ip) injected 15 min before LPS (2 mg/kg BW, ip) or recombinant human IL-1α (μg/rat) administration in intact rats. Control animals received an equivalent volume of 0.9% saline. Rats were sacrificed at 60 min or 90 min after LPS, or IL-1α or saline injection. Plasma corticosterone levels were measured by radioimmunoassay. Results showed that pretreatment with bicuculline enhanced both LPS- and IL-1-induced corticosterone secretion; while pretreatment with GABA significantly reduced the LPS-stimulated corticosterone release (p<0.05, vs LPS alone). The effect is dependent on the time of sampling and such effect of bicuculline or GABA was not observed when rats were stimulated in the evening. In addition, the maximal changes of plasma corticosterone following LPS administration in the evening were significantly lower than in the morning (p<0.01). The present study provides evidence that GABA is involved, at least in part, in the neuroendocrine regulation of LPS/interleukin-1a-induced corticosterone secretion via GABA-A receptor in rats. In addition, the response of plasma corticosterone to LPS has a diurnal variation, which corresponds to a diurnal change of GABAergic modulation of the immunoneu-roendocrine response. © Italian Society of Endocrinology (SIE) 1996 |
abstract_unstemmed |
Abstract Lipopolysaccharide (LPS)-induced inflammatory stress activates the hypothalamus-pituitary-adrenal (HPA) function. Interleukin-I (IL-1) is one of the key factors during this event; however, the mechanisms mediating IL-1 stimulation of HPA axis are still unclear. The present study evaluated the possible involvement of γ-aminobutyric acid (GABA) in LPS-induced activation of HPA axis in adult male rats. In addition, the possible existence of diurnal changes of LPS-induced HPA axis activity was also investigated. Bicuculline (0.8 mg/kg BW), a GABA-A receptor antagonist and GABA (1 g/kg BW) were intraperitoneally (ip) injected 15 min before LPS (2 mg/kg BW, ip) or recombinant human IL-1α (μg/rat) administration in intact rats. Control animals received an equivalent volume of 0.9% saline. Rats were sacrificed at 60 min or 90 min after LPS, or IL-1α or saline injection. Plasma corticosterone levels were measured by radioimmunoassay. Results showed that pretreatment with bicuculline enhanced both LPS- and IL-1-induced corticosterone secretion; while pretreatment with GABA significantly reduced the LPS-stimulated corticosterone release (p<0.05, vs LPS alone). The effect is dependent on the time of sampling and such effect of bicuculline or GABA was not observed when rats were stimulated in the evening. In addition, the maximal changes of plasma corticosterone following LPS administration in the evening were significantly lower than in the morning (p<0.01). The present study provides evidence that GABA is involved, at least in part, in the neuroendocrine regulation of LPS/interleukin-1a-induced corticosterone secretion via GABA-A receptor in rats. In addition, the response of plasma corticosterone to LPS has a diurnal variation, which corresponds to a diurnal change of GABAergic modulation of the immunoneu-roendocrine response. © Italian Society of Endocrinology (SIE) 1996 |
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title_short |
Bicuculline enhances the corticosterone secretion induced by lipopolysaccharide and interleukin-1α in male rats |
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Petraglia, R. Nappi, R. E. Criscuolo, M. Ficarra, G. Salvestroni, C. Genazzani, A. D. Trentini, G. P. Genazzani, Andrea R. |
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