Male Subfertility

Ha, Davidson

doi:10.1136/bmj.2.4640.1328

Cited by 13 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Of the 376 women who remained sterile, 39 (10.3%) were married to men known to have azoospermia. Azoospermia on repeated analyses was found in 7.5% of all the men examined, a figure half-way between the 8.1% reported by Davidson (1949) and the 7.1% reported by Page and Houlding (1951). In addition another 1.5%.…”

Section: Relationship Of Seminal Analysis Results To Conception Ratementioning

confidence: 64%

End-results in Primary Sterility

Bender¹

1952

BMJ

View full text Add to dashboard Cite

EVENTS OF THE PRIMATE OVARIAN CYCLE BR 4 cians of the opportunities they will have to help solve the problems of ovarian function. The basic outline of the human cycle has been worked out, and it can be understood in relation to the general pattern of mammalian reproduction. Its time-schedule is fairly well known statistically. Much has been learned about the endocrine factors that control cyclic events. Because we have gone so far it is becoming possible to study some of the major variations and abnormalities of the cycle in individuals, with the hope of relieving the distress and suffering that so often attend them. More and more this investigation will have to be carried on in the consulting-room, the operating theatre, and the hospital laboratory, but it calls for workers who know the biology of the cycle.This word to the clinicians is the first half of my peroration. Let me finish it in the spirit of Thomas Henry Huxley's broad curiosity about mankind's place in nature. Comparing the human cycle with that of other primates, we find that human ovarian functions operate through similar anatomical structures and' follow the general primate pattern. In this respect our race is simply another simian species; and yet, passing upwatd through the primate line we find an increasing domination of nervous and mental processes in the control of reproductive behaviour. This trend reaches its height in mankind. Possessing a generalized animal body with a highly specialized brain, our species has grown into a realm beyond the merely animal in which we not only undergo the cycles and fluctuations of animal life but also seek to understand and to direct them; a realm where sex and reproduction are at their best bound up with reason, and a sense of beauty, and human affection. BIBLIOGRAPHICAL NOTEReferences to the contributions cited will bc found in the bibliographies of the following recent books and articles: Asdell, S. A. (1946). Patternis of Mammalian Repr-oduction.

show abstract

Section: Relationship Of Seminal Analysis Results To Conception Ratementioning

confidence: 64%

End-results in Primary Sterility

Bender¹

1952

BMJ

View full text Add to dashboard Cite

show abstract

“…These statements are certainly not true in the light of present-day knowledge, and are even flatly contradicted by many authors (Falk and Kaufman, 1950;Hotchkiss et al, 1938;Hammen, 1944). Davidson (1949) arrived tentatively at the following lowest standard of normality, based on 125 men whose wives conceived shortly after the semen analysis. Viability.…”

mentioning

confidence: 99%

The Relation of Cervical Mucus and Asthenospermia in Sterility*

Sandler

1952

BJOG

View full text Add to dashboard Cite

Phthalate esters and semen quality parameters

Murature

Tang

Steinhardt

et al. 1987

Biol. Mass Spectrom.

View full text Add to dashboard Cite

Analysis of reports in the world's literature suggests that average sperm densities for groups of unselected males were relatively constant at about 108 million cells per ml prior to 1950. Subsequent to that time mean sperm densities appear to have declined. Regression analysis indicates the existence of significant negative correlations between mean sperm densities and production of synthetic organic chemicals among other parameters. Phthalate esters are one class of large volume organic chemicals that are known to disturb testicular function in laboratory animals. These compounds are also the most abundant man-made chemicals in the environment. Plots of the concentration of dibutylphthalate in the cellular fraction of ejaculates against either the sperm density or the total number of sperm for the same ejaculates gave two clusters of points. These clusters suggest the existence of two or more populations vis à vis phthalate metabolism; both of which show a negative correlation between phthalate concentration and sperm production.

show abstract

Male Subfertility

Cited by 13 publications

References 0 publications

End-results in Primary Sterility

End-results in Primary Sterility

The Relation of Cervical Mucus and Asthenospermia in Sterility*

Phthalate esters and semen quality parameters

Contact Info

Product

Resources

About