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Dive into the research topics where Kimio Bamba is active.

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Featured researches published by Kimio Bamba.


Molecular Reproduction and Development | 1996

Rapid and simultaneous detection of chromosome Y- and 1-bearing porcine spermatozoa by fluorescence in situ hybridization

Tatsuo Kawarasaki; Masaru Sone; Mitsutoshi Yoshida; Kimio Bamba

This study was carried out to develop a rapid and simultaneous detection system of chromosome Y‐ and 1‐bearing porcine spermatozoa by fluorescence in situ hybridization (FISH). Chromosome Y‐ and 1‐specific DNA probes were produced by polymerase chain reaction with digoxigenin (Dig)‐ or biotin‐dUTP. The hybridization probe mixture of labeled Y‐chromosome and chromosome 1‐specific DNA was applied to the preparation, immediately denatured at 75°C for 8 min, hybridized for 5 min at 37°C and overall FISH steps were done within a few hours. When double FISH with Dig‐labeled chromosome Y‐specific and biotin‐labeled chromosome 1‐specific probes was applied to sperm nuclei pretreated with dithiothreitol, the average of 50.9% of sperm nuclei had the Dig‐signal, 99.2% of the sperm nuclei had the biotin‐signal and the average of 0.3% of sperm nuclei showed no signal. The putative rate of Y‐bearing spermatozoa ranged from 49.8% to 52.8% among 5 boars and the average putative rate of Y‐bearing spermatozoa was 51.0%. The results indicated that a rapid and simultaneous FISH with chromosome Y‐ and 1‐specific porcine DNA probes produced by PCR made possible more accurate assessment of Y‐bearing porcine spermatozoa.


Journal of Reproduction and Development | 1974

The solubility of CO2 in boar seminal plasma

Kimio Bamba; Isao Iida

家畜の中でも豚の精漿中には特に多くのCO2が貯留されている。本実験ではこの貯留CO2が振盪や加温によってどのような影響を受けるか,また, 2貯留量とpHや, Na, Kイオン含量との関連性について調べた。得られた結果を要約すると次の通りである。1.加温や振盪操作により貯留CO2の一部が放出されるが,特に振盪によって放出は急激に促進された。2. 振盪を開始してから約5分間は, CO2放出が特に激しく起こった。 3mlの精漿を37°Cで振盪した場合の最初の5分間には95μlのCO2放出が認められた。3. 静置状態におけるCO2放出は徐々に起こり60分間以上続いた。4. CO2放出に伴って,精漿pHはアルカリ側に傾いた。5. pHが6.2~7.8のリン酸緩衝液の添加はCO2放出を促進した。6. 精漿のpHと貯留CO2量,あるいはNa, Kイオン含量との間には,正の相関関係が認められた。


Journal of Reproduction and Development | 1971

Studies on the method of measuring the groupmovement of bull spermatozoa

Isao Iida; Michio Fukuda; Yoshio Kojima; Kimio Bamba

要約精子の集団運動力を客観的に計測するために著者らが試作した装置を用いて実験したところ,次の結果を得た。1)本装置を用いた場合,shearingによって精子の運動を規制し,これを解く場合に復活する能力(R.T.)を測定することによって精子活力を計測することができることがわかった。2)R.T.の測定には用いた精子数の間には有意差がみられないことがわかった。但しR.T.を記録紙で読みとる点では1~2億精子/mlあたりが適当と思われた。3)用いたshearingの回転数はR.T.に対して有意差をもたらされないことがわかった。4)肉眼的測定値とR.T.との間には極めて高い負の相関々係γ=-0.826が検出された(P<0.01)。これによって,本装置は精子活力をR.T.で求めることにより数字的に示すことができる。


International Journal of Andrology | 2001

Immunoreactive relaxin in seminal plasma of fertile boars and its correlation with sperm motility characteristics determined by computer-assisted digital image analysis

Y. Sasaki; Tetsuya Kohsaka; T. Kawarasaki; Hiroshi Sasada; T. Ogine; Kimio Bamba; Hidenari Takahara


Journal of Reproduction and Development | 1989

Effects of gonadotropins and estradiol-17.BETA. on the timing of nuclear maturation and cumulus mass expansion in pig oocytes cultured in vitro.

Mitsutoshi Yoshida; Kimio Bamba; Yoshio Kojima


Molecular Reproduction and Development | 1995

Detection of Y‐bearing porcine spermatozoa by in situ hybridization using digoxigenin‐labeled, porcine male‐specific DNA probe produced by polymerase chain reaction

Tatsuo Kawarasaki; Tetsuya Kohsaka; Masaru Sone; Mitsutoshi Yoshida; Kimio Bamba


Journal of Reproduction and Development | 2001

The Presence of Specific Binding Sites on Boar Spermatozoa for Porcine Relaxin and Its Action on Their Motility Characteristics

Tetsuya Kohsaka; Hiroshi Sasada; Hidenari Takahara; Eimei Sato; Kimio Bamba; O. David Sherwood


Animal Science Journal | 2005

Effect of theanine, γ-glutamylethylamide, on bodyweight and fat accumulation in mice

Guodong Zheng; Kimio Bamba; Tsutomu Okubo; Lekh Raj Juneja; Itaro Oguni; Kazutoshi Sayama


Journal of Reproduction and Development | 1989

Effects of bacteria-contaminated boar semen on the reproductive performance

M. Sone; Kikugawa Poultry Experiment Station; Tatsuo Kawarasaki; Kimio Bamba; Akira Ogasa; Tatsuo Nakahara


Nihon Yoton Gakkaishi | 1992

Prolonged storage on boar semen in liqid form.

Masaru Sone; Mikio Chikyu; Mitsutoshi Yoshida; Kimio Bamba; Akira Ogasa

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Itaro Oguni

University of Shizuoka

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