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Biomedical subjects

T J Robinson

Publications and source records attributed to T J Robinson.

At least 109 records · Page 6Linked to original sources
PubMed1975

The passage of spermatozoa through the cervix of ovariectomized ewes treated with progesterone and oestrogen.

Thirty spayed ewes were used in a 2 x 3 split-plot factorial experiment (n = 5) in which oestrus was induced with 30 or 90 mug oestradiol benzoate (OB) following a period of progesterone priming. They were inseminated 36 hr after oestrogen and the numbers of spermatozoa in the caudal, mid- and cranial regions of the cervix (sub-plots) were estimated 1, 12 and 24 hr later. At each interval of time and for each region of the cervix, fewer spermatozoa were recovered from the ewes treated with 30 mug OB than from those treated with 90 mug (P less than 0-05).

Analysis of Variance↗
PubMed1975

The effect of oestrogen administered during the progestational phase of the cycle on transport of spermatozoa in ewes.

Two split-plot factorial experiments are described, the first with 72 entire cyclic ewes and the second with 80. The pattern of transport of spermatozoa through the reproductive tract was studied, following treatments with progestagen and oestrogen or with oestrogen alone during 2 weeks preceding insemination. A daily dose of 25 mug oestradiol-17 beta administered to ewes for 14 days preceeding oestrus had a deleterious effect on the passage of spermatozoa through the cervix into the uterus within the first 2 hr after insemination. The numbers of spermatozoa recoverable from the cranial region of the cervix 2 hr after insemination appeared to be related to the numbers in the oviducts at 24 hr. These numbers were related to fertility data from an earlier experiment using similar treatments. The data for log numbers of spermatozoa recoverable from the cervix formed a near-normal distribution and so were suitable for formal statistical analysis. There was an interaction between progestagen and oestrogen influence before mating on the pattern of sperm transport through the cervix.

Animals↗
PubMed1970

Long-term prognosis following ventricular fibrillation in acute ischaemic heart disease.

Of 160 patients who survived ventricular fibrillation complicating acute ischaemic heart disease, 80 had had a clinically mild coronary attack. Most of the long-term survivors had ventricular fibrillation within 24 hours of the onset of symptoms. The longterm prognosis of the survivors was similar to that of patients whose myocardial infarction was not complicated by ventricular fibrillation. Those patients who survived ventricular fibrillation which occurred within four hours of the onset of symptoms were younger, usually had had a mild coronary attack, and had the most favourable longterm prognosis. The number of episodes of ventricular fibrillation did not affect adversely the long-term prognosis. Of those who at the time of review were eligible to work, 86% were fit to work and 68% were actually at work.

Acute Disease↗