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Cigarette smoking and semen quality
Fertility and Sterility, 1982In order to further investigate the findings of earlier studies the authors conducted a study of semen quality in 437 consecutively seen male partners of infertile couples and excluded 181 men who exhibited factors which could have influenced semen quality. A group of 97 men with varicocele was considered separately. Of the remaining 159 men 101 were
L J, Rodriguez-Rigau +2 more
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Cigarette smoking and semen quality
Fertility and Sterility, 1996To determine whether cotinine levels provide stronger evidence for an association between smoking and semen quality than the number of cigarettes smoked per day or years smoked controlling for potential confounders and effect modifiers.Cross-sectional study.Male volunteers at the Reproductive Endocrinology-Fertility Laboratory.Eighty-eight men (ages 18
M F, Vine, C K, Tse, P, Hu, K Y, Truong
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Aluminum content of human semen: Implications for semen quality
Reproductive Toxicology, 2014A deterioration of human semen quality has been observed over recent decades. A possible explanation could be an increased exposure to environmental pollutants, including aluminum. Our aim was to measure the aluminum concentration in the semen of 62 patients and to carry out a preliminary evaluation on its impact on specific semen parameters.
J P, Klein +4 more
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Semen quality and semen storage.
2009AbstractPoultry semen quality and semen storage respectively can be considered in terms of the intrinsic components of spermatozoa and seminal plasma and their properties, and of the oviducal sperm-storage systems and their regulation. However, the focus of this chapter is on the technologies for assessing semen quality and for storing semen in vitro ...
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SIGNIFICANCE OF SEMEN CULTURES FOR MEN WITH QUESTIONABLE SEMEN QUALITY
Archives of Andrology, 2006Semen cultures often yield inconclusive results probably due to bacterial contaminants. We were able to isolate enteric pathogens with greater specificity by comparing two cultures from the same individual: one obtained from the midstream urine and the other from ejaculate obtained following midstream urine collection and eliminating the bacteria ...
M, Damirayakhian +2 more
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Semen quality in hypogonadal acromegalic patients
Pituitary, 2019Growth hormone (GH) activity might be implicated in male reproductive function. One previous study has suggested significantly reduced semen quality in untreated acromegalic patients due to both reduced sperm counts and sperm motility.A retrospective study comprising ten uncontrolled hypogonadal acromegalic patients (median age 29 years) who delivered ...
Mikkel Andreassen +3 more
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Phthalate esters and semen quality parameters
Biological Mass Spectrometry, 1987Analysis 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.
D A, Murature +3 more
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Assessing poultry semen quality
2023This overview briefly examines some of the semen evaluation techniques and fertility determination procedures used currently on breeder farms. The later procedures were included as both provide rapid feedback on flock fertility, the best indicator of semen quality.
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Stainless steel welding and semen quality
Reproductive Toxicology, 1988Questionnaire studies of patients from fertility clinics suggest that welders may have an increased risk of reduced semen quality. In this study, welders and nonwelders from the same plants were asked to provide blood, urine, and semen samples. Urine was analyzed for chromium and nickel, and for mutagenic activity and metal concentration; blood for ...
Jelnes, J E, Knudsen, Lisbeth E.
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2012
Infertility affects an estimate of 50–80 × 106 (=7–15% of men at reproductive age) men globally and annually. Among these men, a large number of patients (25–40%) suffer from male genital tract infection/inflammation, conditions where reactive oxygen species (ROS) and oxidative stress in the semen play prominent roles in the pathogenesis of infertility.
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Infertility affects an estimate of 50–80 × 106 (=7–15% of men at reproductive age) men globally and annually. Among these men, a large number of patients (25–40%) suffer from male genital tract infection/inflammation, conditions where reactive oxygen species (ROS) and oxidative stress in the semen play prominent roles in the pathogenesis of infertility.
openaire +1 more source