The reproductive system is controlled by gonadotropin releasing hormone (GnRH) secretion from the brain, which is finely modulated by a number of factors including gonadal sex steroids. GnRH cells do not express estrogen receptor a, but feedback is transmitted by neurons that are at least 'one step back' from the GnRH cells. Modulation by season, stress and nutrition are effected by neuronal pathways that converge on the GnRH cells. Kisspeptin and gonadotropin inhibitory hormone (GnIH) neurons are regulators of GnRH secretion, the former being a major conduit for transmission of sex steroid feedback. GnIH cells project to GnRH cells and may play a role in the seasonal changes in reproductive activity in sheep. GnIH also modulates the action of GnRH at the level of the pituitary gonadotrope. This review focuses on the role that kisspeptin and GnIH neurons play, as modulators that are 'one step back' from GnRH neurons. (C) 2011 Elsevier Inc. All rights reserved.
机构:
Univ Western Ontario, Dept Anat & Cell Biol, London, ON N6A 5C1, CanadaUniv Western Ontario, Dept Anat & Cell Biol, London, ON N6A 5C1, Canada
Cheng, Guanliang
;
Coolen, Lique M.
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Univ Western Ontario, Dept Anat & Cell Biol, London, ON N6A 5C1, CanadaUniv Western Ontario, Dept Anat & Cell Biol, London, ON N6A 5C1, Canada
Coolen, Lique M.
;
Padmanabhan, Vasantha
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Univ Michigan, Dept Pediat, Ann Arbor, MI 48109 USA
Univ Michigan, Dept Obstet & Gynecol, Ann Arbor, MI 48109 USA
Univ Michigan, Dept Mol & Integrat Physiol, Ann Arbor, MI 48109 USAUniv Western Ontario, Dept Anat & Cell Biol, London, ON N6A 5C1, Canada
Padmanabhan, Vasantha
;
Goodman, Robert L.
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W Virginia Univ, Dept Physiol & Pharmacol, Morgantown, WV 26506 USAUniv Western Ontario, Dept Anat & Cell Biol, London, ON N6A 5C1, Canada
Goodman, Robert L.
;
Lehman, Michael N.
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Univ Western Ontario, Dept Anat & Cell Biol, London, ON N6A 5C1, CanadaUniv Western Ontario, Dept Anat & Cell Biol, London, ON N6A 5C1, Canada
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Queens Med Res Inst, Ctr Reprod Biol, MRC, Human Reprod Sci Unit, Edinburgh EH16 4TJ, Midlothian, ScotlandMonash Univ, Dept Physiol, Clayton, Vic 3800, Australia
Morgan, Kevin
;
Pawson, Adam J.
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Queens Med Res Inst, Ctr Reprod Biol, MRC, Human Reprod Sci Unit, Edinburgh EH16 4TJ, Midlothian, ScotlandMonash Univ, Dept Physiol, Clayton, Vic 3800, Australia
Pawson, Adam J.
;
Tsutsui, Kazuyoshi
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Waseda Univ, Dept Biol, Shinjuku Ku, Tokyo 1698050, JapanMonash Univ, Dept Physiol, Clayton, Vic 3800, Australia
Tsutsui, Kazuyoshi
;
Millar, Robert P.
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Queens Med Res Inst, Ctr Reprod Biol, MRC, Human Reprod Sci Unit, Edinburgh EH16 4TJ, Midlothian, Scotland
Univ Cape Town, Dept Med Biochem, ZA-7925 Cape Town, South AfricaMonash Univ, Dept Physiol, Clayton, Vic 3800, Australia
Millar, Robert P.
;
Bentley, George E.
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Univ Calif Berkeley, Dept Integrat Biol, Berkeley, CA 94720 USA
Univ Calif Berkeley, Helen Wills Neurosci Inst, Berkeley, CA 94720 USAMonash Univ, Dept Physiol, Clayton, Vic 3800, Australia
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Univ Western Ontario, Dept Anat & Cell Biol, London, ON N6A 5C1, CanadaUniv Western Ontario, Dept Anat & Cell Biol, London, ON N6A 5C1, Canada
Cheng, Guanliang
;
Coolen, Lique M.
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Univ Western Ontario, Dept Anat & Cell Biol, London, ON N6A 5C1, CanadaUniv Western Ontario, Dept Anat & Cell Biol, London, ON N6A 5C1, Canada
Coolen, Lique M.
;
Padmanabhan, Vasantha
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h-index: 0
机构:
Univ Michigan, Dept Pediat, Ann Arbor, MI 48109 USA
Univ Michigan, Dept Obstet & Gynecol, Ann Arbor, MI 48109 USA
Univ Michigan, Dept Mol & Integrat Physiol, Ann Arbor, MI 48109 USAUniv Western Ontario, Dept Anat & Cell Biol, London, ON N6A 5C1, Canada
Padmanabhan, Vasantha
;
Goodman, Robert L.
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h-index: 0
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W Virginia Univ, Dept Physiol & Pharmacol, Morgantown, WV 26506 USAUniv Western Ontario, Dept Anat & Cell Biol, London, ON N6A 5C1, Canada
Goodman, Robert L.
;
Lehman, Michael N.
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Univ Western Ontario, Dept Anat & Cell Biol, London, ON N6A 5C1, CanadaUniv Western Ontario, Dept Anat & Cell Biol, London, ON N6A 5C1, Canada
机构:
Queens Med Res Inst, Ctr Reprod Biol, MRC, Human Reprod Sci Unit, Edinburgh EH16 4TJ, Midlothian, ScotlandMonash Univ, Dept Physiol, Clayton, Vic 3800, Australia
Morgan, Kevin
;
Pawson, Adam J.
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Queens Med Res Inst, Ctr Reprod Biol, MRC, Human Reprod Sci Unit, Edinburgh EH16 4TJ, Midlothian, ScotlandMonash Univ, Dept Physiol, Clayton, Vic 3800, Australia
Pawson, Adam J.
;
Tsutsui, Kazuyoshi
论文数: 0引用数: 0
h-index: 0
机构:
Waseda Univ, Dept Biol, Shinjuku Ku, Tokyo 1698050, JapanMonash Univ, Dept Physiol, Clayton, Vic 3800, Australia
Tsutsui, Kazuyoshi
;
Millar, Robert P.
论文数: 0引用数: 0
h-index: 0
机构:
Queens Med Res Inst, Ctr Reprod Biol, MRC, Human Reprod Sci Unit, Edinburgh EH16 4TJ, Midlothian, Scotland
Univ Cape Town, Dept Med Biochem, ZA-7925 Cape Town, South AfricaMonash Univ, Dept Physiol, Clayton, Vic 3800, Australia
Millar, Robert P.
;
Bentley, George E.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Calif Berkeley, Dept Integrat Biol, Berkeley, CA 94720 USA
Univ Calif Berkeley, Helen Wills Neurosci Inst, Berkeley, CA 94720 USAMonash Univ, Dept Physiol, Clayton, Vic 3800, Australia