tailieunhanh - Cigarette smoking and male infertility

Numerous studies have identified specific body systems affected by the hazardous effects of the cigarette smoking particularly the respiratory and cardiovascular systems. The effect of smoking on male reproduction has also been studied where semen quality was investigated in different cross-sectional studies including infertile patients with conflicting results. This article aimed to assess the relationship between smoking and male infertility. A review of published articles was carried out, using PubMed, medical subject heading (MSH) databases and Scopus engine excluding the effects of smoking outside male infertility. Key words used to assess exposure, outcome, and estimates for the concerned associations were: smoking, semen, male infertility, sperm, humans, and fertility. Most of the reports showed that smoking reduces sperm production, sperm motility, sperm normal forms and sperm fertilising capacity through increased seminal oxidative stress and DNA damage. Few papers reported nonsignificant differences in semen parameters between smokers or non-smokers. It is concluded that although some smokers may not experience reduced fertility, men with marginal semen quality can benefit from quitting smoking. | Journal of Advanced Research 2010 1 179-186 Cairo University Journal of Advanced Research REVIEW Cigarette smoking and male infertility Taymour Mostafa Andrology Sexology Department Faculty of Medicine Cairo University Cairo 11562 Egypt Received 19 February 2009 received in revised form 5 June 2009 accepted 2 November 2009 Available online 9 June 2010 KEYWORDS Male infertility Smoking Tobacco Semen Sperm Fertility Abstract Numerous studies have identified specific body systems affected by the hazardous effects of the cigarette smoking particularly the respiratory and cardiovascular systems. The effect of smoking on male reproduction has also been studied where semen quality was investigated in different cross-sectional studies including infertile patients with conflicting results. This article aimed to assess the relationship between smoking and male infertility. A review of published articles was carried out using PubMed medical subject heading MSH databases and Scopus engine excluding the effects of smoking outside male infertility. Key words used to assess exposure outcome and estimates for the concerned associations were smoking semen male infertility sperm humans and fertility. Most of the reports showed that smoking reduces sperm production sperm motility sperm normal forms and sperm fertilising capacity through increased seminal oxidative stress and DNA damage. Few papers reported nonsignificant differences in semen parameters between smokers or non-smokers. It is concluded that although some smokers may not experience reduced fertility men with marginal semen quality can benefit from quitting smoking. 2010 Cairo University. All rights reserved. Introduction Tobacco is a plant with green foliage and tubular flowers. Biologically titled Nicotiana tabacum it derives its name from Jaen Nicot the French ambassador to Portugal who brought it back with him as a medicine in 1560. In 1800 it was used for smoking achieving worldwide popularity as Spanish sailors .

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