| Project/Area Number |
01480404
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| Research Category |
Grant-in-Aid for General Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Obstetrics and gynecology
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| Research Institution | Aichi Medical University |
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Principal Investigator |
SUZUKI Masatosi Aichi Medical University dept of Obstetrics & Gynecology Associate Professor, 医学部・産婦人科学, 助教授 (90093426)
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| Co-Investigator(Kenkyū-buntansha) |
MASAHASHI Tetsuo Aichi Medical University dept of Obstetrics & Gynecology Assistant Professor, 医学部・産婦人科学, 講師 (60159142)
ASAI Mitsuoki Aichi Medical University dept of Obstetrics & Gynecology Associate Professor, 医学部・産婦人科学, 助教授 (50151014)
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| Project Period (FY) |
1989 – 1990
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| Project Status |
Completed (Fiscal Year 1990)
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| Budget Amount *help |
¥6,200,000 (Direct Cost: ¥6,200,000)
Fiscal Year 1990: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 1989: ¥5,200,000 (Direct Cost: ¥5,200,000)
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| Keywords | Patch Clamp Method / Fertilization Phenomenon / Calcium Ion Channel / patch clamp 法 / カルシュウム チャンネル / パッチクランプ法 / Ca^<++>チャンネル / カルシウムブロッカ- |
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| Research Abstract |
This research aimed at the analysis of fertilization phenomenon using the patch clamp method which is newly developed method in electro-physiology area.
(1) Study of golden hamster ovum
We injected PMS and hCG in subcutaneous tissue of golden hamster. Hyperstimulated ova were collected using microscope and incubated in trypsin and hyaronidaze contained solution. Collected zona free ovum was attached with patch clamp electrode, and on-off phenomena of calcium ion channel were recorded and analyzed. After study of calcium ion channel in sperm free solution, sperm of golden hamster were added into solution. Frequency of on-off phenomena of calcium ion channel were increased after penetration of sperm into ovum under phase contrast microscope. These data are already speculated in other methods, but it is important to get these data in direct method.
(2) Study of human ovum
Because studies of fertilization of human ovum are restricted under Japanese Obstetrics & gynecology Association now, the precise studies of human ovum cannot be done. We examined human ova which were collected in gynecological operations under permission of patients. Zona free ovum which was obtained after treatment of trypsin and hyaronidaze was attached with patch clamp electrode. Frequency of on-off phenomena of calcium ion channel was low in follicular phase, but in luteal phase it was high frequency. These data are newly found out.
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