Semen quality and sperm functional parameters in fertile Indian men

Pal, P. C.; Rajalakshmi, M.; Manocha, Monika; Sharma, Radhey Shyam; Rao, D. N.

doi:10.1111/j.1439-0272.2006.00685.x

Cited by 31 publications

(24 citation statements)

References 23 publications

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“…In perspective to various fertile populations worldwide the mean progressive motility in Nepalese was found to be slightly higher than Swiss 14 as well as Norwegian population 13 and it made much closer resemblance with that of Indian population. 17 The mean progressive sperm motility of the current study is higher than that of Ombelet et al…”

Section: Methodscontrasting

confidence: 72%

Semen Parameters of Fertile Men Attending Tribhuvan University Teaching Hospital

Lamichhane

Baral

Manandhar

et al. 2014

Nepal j. obstet. gynaecol.

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Aims:This study was done to analyze the semen parameters of fertile Nepalese men with a known time to pregnancy of less than or equal to 12 months and to compare the values obtained with the newer reference limit of WHO, 2010. Methods:A hospital based prospective cross-sectional study was conducted at Tribhuvan University Teaching Hospital, ,QVWLWXWH RI 0HGLFLQH IURP WK $SULO ± WK $SULO 6L[W\ IHUWLOH PHQ ZLWK D NQRZQ WLPH WR SUHJQDQF\ 773 12 months were included in the study and semen collection and analysis done at the laboratory of Department of Pathology. Results 7KH IROORZLQJ RQHVLGHG UHIHUHQFH OLPLWV WKH ¿IWK FHQWLOH ZLWK WK SHUFHQW FRQ¿GHQFH LQWHUYDO ZHUH JHQHUDWHG VHPHQ YROXPH PO WRWDO VSHUP QXPEHU PLOOLRQ SHU HMDFXODWH VSHUP FRQFHQWUDWLRQ PLOOLRQ SHU PO SURJUHVVLYH PRWLOLW\ WRWDO SURJUHVVLYH SOXV QRQSURJUHVVLYH PRWLOLW\ PRWLOLW\ YLWDOLW\ PRUSKRORJLFDOO\ QRUPDO IRUP Conclusions:The study concluded that only a single semen parameter cannot be conclusive of fertility, therefore combination of all semen parameters is more predictive. In addition the study also concluded that the semen parameters of Nepalese fertile men were found lower as compared to reference limits of WHO. .H\ZRUGV IHUWLOH PHQ VHPHQ SDUDPHWHUV WLPH WR SUHJQDQF\ 773

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Section: Methodscontrasting

confidence: 72%

Semen Parameters of Fertile Men Attending Tribhuvan University Teaching Hospital

Lamichhane

Baral

Manandhar

et al. 2014

Nepal j. obstet. gynaecol.

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“…Therefore, variations in physicality and thereby reproductive health status of men are most likely to occur among different regions of this country. Not many studies have been done to analyze such predictions (Jajoo & Kalyani, 2013;Marimuthu et al, 2003;Mukhopadhyay et al, 2010;Pal et al, 2006). However, a relevant study was conducted in laboratories at five different cities, namely, Bangalore, Kurnool, Mumbai, Jalandhar, and Jodhpur, using sperm samples from male partners of infertile couples.…”

Section: North America Numerous Studies Conducted In the Unitedmentioning

confidence: 99%

“…Most of the Asian studies were carried out in China (Diao et al, 2013;Nie et al, 2012;;Tang et al, 2013;Tang et al, 2015;Wang et al, 1985) and India (Jajoo & Kalyani, 2013;Marimuthu et al, 2003;Mehta, Makwana, Ranga, Srinivasan, & Virk, 2006;Mukhopadhyay et al, 2010;Pal et al, 2006), and a few in Japan (Iwamoto et al, 2013), Israel (Benshushan et al, 1997;Homonnai et al, 1982;Laufer et al, 1985;Singer et al, 1990), and Saudi Arabia (el Shoura et al, 1995).…”

Section: North America Numerous Studies Conducted In the Unitedmentioning

confidence: 99%

The Disappearing Sperms: Analysis of Reports Published Between 1980 and 2015

2016

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Reports regarding the changes in sperm concentration in different counties of the world are inconsistent. Furthermore, the reports that sprung up from specific epidemiological and experimental examinations did not include data of prior studies or geographical variations. The current study, following a previous report of massive fall in semen volume over the past 33 years, attempts to delineate the trend of altering sperm concentrations and factors responsible for this by reviewing article published from 1980 to July 2015 with geographic differences. The current study identified an overall 57% diminution in mean sperm concentration over the past 35 years (r = −.313, p = .0002), which, when analyzed for each geographical region, identified a significant decline in North America, Europe, Asia, and Africa. An increasing trend of sperm concentration was identified only in Australia. The association of male age with such a trend (R 2 = .979) is reported. The authors also correlated male fertility with sperm concentration. Thus, this comprehensive, evidencebased literature review aims to concisely and systematically present the available data on sperm concentration from 1980 to 2015, as well as to statistically analyze the same and correlate male health with the declining pattern of sperm count in a single scientific review to serve the scientific research zone related to reproductive health. It points to the threat of male infertility in times ahead.

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“…The sperm motility is a key factor to determine semen quality and its fertilizing capacity (104)(105)(106), which is widely controlled by a variety of factors (107)(108)(109). The phospholipid composition and cholesterol to phospholipid ratio are predominant factors required for the sperm maturation in the epididymis (110).…”

Section: Fertilizationmentioning

confidence: 99%

Zinc α2-Glycoprotein: A Multidisciplinary Protein

Hassan

Waheed

Yadav

et al. 2008

Molecular Cancer Research

216

204

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Zinc A2-glycoprotein (ZAG) is a protein of interest because of its ability to play many important functions in the human body, including fertilization and lipid mobilization. After the discovery of this molecule, during the last 5 decades, various studies have been documented on its structure and functions, but still, it is considered as a protein with an unknown function. Its expression is regulated by glucocorticoids. Due to its high sequence homology with lipid-mobilizing factor and high expression in cancer cachexia, it is considered as a novel adipokine. On the other hand, structural organization and fold is similar to MHC class I antigen-presenting molecule; hence, ZAG may have a role in the expression of the immune response. The function of ZAG under physiologic and cancerous conditions remains mysterious but is considered as a tumor biomarker for various carcinomas. There are several unrelated functions that are attributed to ZAG, such as RNase activity, regulation of melanin production, hindering tumor proliferation, and transport of nephritic by-products. This article deals with the discussion of the major aspects of ZAG from its gene structure to function and metabolism. (Mol Cancer Res 2008;6(6):892 -906)

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Semen quality and sperm functional parameters in fertile Indian men

Cited by 31 publications

References 23 publications

Semen Parameters of Fertile Men Attending Tribhuvan University Teaching Hospital

Semen Parameters of Fertile Men Attending Tribhuvan University Teaching Hospital

The Disappearing Sperms: Analysis of Reports Published Between 1980 and 2015

Zinc α2-Glycoprotein: A Multidisciplinary Protein

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