Explanipedia

Effects of re-immunization of heifers against inhibin on hormonal profiles and ovulation rate Open

Mohamed S. Medan, Satoshi Akagi, Hiroyuki Kaneko, Gen Watanabe, C. G. Tsonis , et al. · 2004

To study the effect of re-immunization against inhibin on ovarian response and hormonal profiles, Japanese beef heifers ( n = 5) were re-immunized three times with inhibin vaccine (recombinant ovine inhibin α-subunit in oil emulsion, 125 μ…

Pituitary and ovarian function in ewes immunized against the amino-terminal peptide ( N) of the inhibin 43-subunit Open

Darryl L. Russell, B. W. Doughton, C. G. Tsonis, J. K. Findlay · 1994

Immunization of ewes against the amino-terminal peptide (alpha N) of the pro-alpha-subunit of inhibin has been shown to reduce fertility, thought to be due to disruption of ovulation. The aims of this study were to examine the effects of a…

Evidence for a major role of inhibin in the feedback control of FSH in the male rat Open

Gerhard F. Weinbauer, John M.S. Bartlett, U. FINGSCHEIDT, C. G. Tsonis, David M. de Kretser , et al. · 1989

Adult rats (16-18/group) received a single intratesticular injection of 25, 100 or 400 microliters glycerol solution (7:3 in distilled water, v/v). Half of the rats in each group were given implants of testosterone, a testosterone-filled S…

Inhibin secretion by the sheep ovary Open

J. K. Findlay, C. G. Tsonis, Linton Staples, Ross N. P. Cahill · 1986

An in-vitro bioassay for inhibin based on FSH content or release by rat pituitary cells was validated for measuring inhibin activity in ovine plasma and lymph. Dose-dependent increases in inhibin activity were detected in peripheral plasma…

Relationships between aromatase activity, follicular fluid oestradiol-17 and testosterone concentrations, and diameter and atresia of individual ovine follicles Open

C. G. Tsonis, Ronald S. Carson, J. K. Findlay · 1984

Aromatase activity was measured in granulosa cells using a 1-h in-vitro assay. This activity correlated with the concentration of oestradiol-17 beta and the ratio of oestradiol-17 beta to testosterone in follicular fluid of individual foll…

Identification at the onset of luteolysis of follicles capable of ovulation in the ewe Open

C. G. Tsonis, L. P. Cahill, Ronald S. Carson, J. K. Findlay · 1984

Follicles of various sizes at the surface of the ovary were ablated by electrocautery at the time of cloprostenol-induced luteolysis in ewes and the interval from cloprostenol treatment to the onset of the LH surge determined as an index o…

Inhibin in individual ovine follicles in relation to diameter and atresia Open

C. G. Tsonis, Helen Quigg, V. W. K. Lee, Lorraine Leversha, Alan Trounson , et al. · 1983

Inhibin activity was measured by bioassay in follicular fluid of 99 individual ovine follicles ranging from 1 . 4 to 6 . 8 mm diameter (used to calculate volume) and in various stages of atresia. Treatment of samples before assay with char…

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