Basic study for new ovulation induction using hypothalamic neuropeptide
Project/Area Number |
24592473
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Obstetrics and gynecology
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Research Institution | The University of Tokushima |
Principal Investigator |
MATSUZAKI Toshiya 徳島大学, ヘルスバイオサイエンス研究部, 准教授 (70294692)
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Co-Investigator(Kenkyū-buntansha) |
IRAHARA Minoru 徳島大学, 大学院ヘルスバイオサイエンス研究部, 教授 (20160070)
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Project Period (FY) |
2012-04-01 – 2015-03-31
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Project Status |
Completed (Fiscal Year 2014)
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Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2013: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2012: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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Keywords | ペプチド / 排卵誘発 / 排卵障害 / ゴナドトロピン / GnRH / 多嚢胞性卵巣症候群 / レトロゾール / senktide / letrozol |
Outline of Final Research Achievements |
We studied the effect of choronic treatment of senktide for recovery of estrous cycle in rat ovulatory disorder model in order to develop new ovulation induction method that has low incidence of multiple pregnancy. We induced rat ovulatory disorder model using letrozol. Letrozol releasing pellets (0.4 mg/day) were placed subcutaneously on the back of 3-week-old female Wistar rats. The estrous cycle was estimated daily by vaginal smear after vaginal opening. These rats did not show estrous cycle and had no corpus lutein and possessed more follicles, showed higher leptin, lower estradiol, higher LH serum levels, higher expression of Kisspeptin mRNA in the posterior hypothalamic area than rats of control group. We placed osmotic minipump that released senktide (0.2 mg/day) for 3 weeks subcutaneously on the back of 8-week-old female rat ovulatory disorder model. Based on assessment of daily vaginal smear, senktide did not recover estrous cycle in the rat ovulatory disorder model.
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Report
(4 results)
Research Products
(46 results)
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[Journal Article] The responses of hypothalamic NPY and OBRb mRNA expression to food deprivation develop during the neonatal-prepubertal period and exhibit gender differences in rats.2015
Author(s)
Matsuzaki T, Iwasa T, Tungalagsuvd A, Munkhzaya M, Kawami T, Yamasaki M, Murakami M, Kato T, Kuwahara A, Yasui T, Irahara M.
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Journal Title
Int J Dev Neurosci.
Volume: 41
Issue: 1
Pages: 63-67
DOI
Related Report
Peer Reviewed / Open Access
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[Journal Article] Developmental changes in hypothalamic oxytocin and oxytocin receptor mRNA expression and their sensitivity to fasting in male and female rats.2015
Author(s)
Matsuzaki T, Iwasa T, Munkhzaya M, Tungalagsuvd A, Kawami T, Murakami M, Yamasaki M, Yamamoto Y, Kato T, Kuwahara A, Yasui T, Irahara M.
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Journal Title
Int J Dev Neurosci.
Volume: 41
Issue: 1
Pages: 105-109
DOI
Related Report
Peer Reviewed / Open Access
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[Journal Article] Prenatal exposure to glucocorticoids affects body weight, serum leptin levels, and hypothalamic neuropeptide-Y expression in pre-pubertal female rat offspring.2014
Author(s)
Iwasa T, Matsuzaki T, Munkhzaya M, Tungalagsuvd A, Kawami T, Murakami M, Yamasaki M, Kato T, Kuwahara A, Yasui T, Irahara M.
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Journal Title
Int J Dev Neurosci.
Volume: 36
Issue: 1
Pages: 1-4
DOI
Related Report
Peer Reviewed / Open Access
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[Journal Article] Hypothalamic Kiss1 and RFRP gene expressions are changed by a high dose of lipopolysaccharide in female rats.2014
Author(s)
Iwasa T, Matsuzaki T, Tungalagsuvd A, Munkhzaya M, Kawami T, Niki H, Kato T, Kuwahara A, Uemura H, Yasui T, Irahara M.
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Journal Title
Horm Behav.
Volume: 66(2)
Issue: 2
Pages: 309-316
DOI
Related Report
Peer Reviewed / Open Access
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[Journal Article] Changes in the responsiveness of hypothalamic PK2 and PKR1 gene expression to fasting in developing male rats.2014
Author(s)
Iwasa T, Matsuzaki T, Tungalagsuvd A, Munkhzaya M, Kawami T, Yamasaki M, Murakami M, Kato T, Kuwahara A, Yasui T, Irahara M.
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Journal Title
Int J Dev Neurosci.
Volume: 38
Issue: 1
Pages: 87-90
DOI
Related Report
Peer Reviewed / Open Access
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[Journal Article] Changes in the responsiveness of hypothalamic prokineticin 2 mRNA expression to food deprivation in developing female rats.2014
Author(s)
Iwasa T, Matsuzaki T, Munkhzaya M, Tungalagsuvd A, Kawami T, Murakami M, Yamasaki M, Kato T, Kuwahara A, Yasui T, Irahara M.
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Journal Title
Int J Dev Neurosci.
Volume: 34
Issue: 1
Pages: 76-78
DOI
Related Report
Peer Reviewed
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[Journal Article] Pre-pubertal serum leptin levels and sensitivity to central leptin injection of prenatally undernourished female rats.2014
Author(s)
Iwasa T, Matsuzaki T, Munkhzaya M, Tungalagsuvd A, Kawami T, Murakami M, Yamasaki M, Kato T, Kuwahara A, Yasui T, Irahara M.
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Journal Title
Int J Dev Neurosci.
Volume: 35
Issue: 1
Pages: 52-54
DOI
Related Report
Peer Reviewed
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[Presentation] PCOSに対する排卵誘発2014
Author(s)
松崎利也
Organizer
産婦人科臨床懇話会セミナー ー不妊治療2014-
Place of Presentation
神奈川県、新横浜プリンスホテル
Year and Date
2014-08-16 – 2014-08-17
Related Report
Invited
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