Sperm counts in Asian men: Reviewing the trend of past 50 years
Journal Title: Asian Pacific Journal of Reproduction - Year 2018, Vol 7, Issue 2
Abstract
Objective: To reveal the trend in alterations of sperm counts in Asian men over the past 50 years. Methods: This study reviewed all the published reports to unveil the specific pattern of alterations of sperm concentrations in Asian men from 1965 till 2015. The time-related changes in sperm concentration were studied using linear regression analyses. Results: The present study elucidated the trend using the reports from Carlsen et al (1965-1990) and non-Carlsen studies published until 2015, on fertile Asian men. In the reports of Carlsen et al., no overall declining trend in Asian men (r = 0.509, P = 0.760) was observed during this tenure, but non- Carsen reports showed a significant time-dependent decline of sperm concentration (r = -0.754, P = 0.005) in Asian men. This present review also showed a mild time-dependant decline in sperm concentration (-0.44×10 6 /mL/year, 95% CI: -0.65 to -0.23; r = -0.473, P = 0.040) which accounted for an overall 22.17% decrease in past 50 years. Conclusions: This study brings to the forefront that sperm concentration among Asian men follows a mild declining trend over the period of 50 years, and further studies addressing the causes of this decline are required.
Authors and Affiliations
Pallav Sengupta, Sulagna Dutta, Maiza Binti Tusimin, Tulay Irez, Elzbieta Krajewska-Kulak
Keywords
Related Articles
- EP ID EP407598
- DOI 10.4103/2305-0500.228018
- Views 191
- Downloads 0
Effects of long-term exposure to radiofrequency radiations emitted by mobile Jammers on reproduction parameters in rats
Objective: To evaluate the effect of long-term exposure to radiofrequency radiations emitted from mobile jammers onrat's reproductive parameters. Methods: Eighty male rats were divided into neonatal group (n=20), immatur...
Value of α-fetoprotein, β-HCG, inhibin A, and UE3 at second trimester for early screening of preeclampsia
Objective: To study the value of α-fetoprotein (α-FP), β-human chorionic gonadotropin (β-HCG), inhibin A, and uncojugated estriol (UE3) at the second trimester for early screening of preeclampsia. Methods: This cohort...
Ghrelin and male reproduction
Ghrelin is a multifunctional peptide hormone, conventionally known to be secreted by the stomach. The synthesis of ghrelin by the reproductive organs signifies its autocrine and/or paracrine actions upon the gonads. Expr...
Activity of transaminase enzyme and testosterone hormone in blood of Awassi rams during different season
Objective: To monitor the levels of aspartate transaminase (AST) and alanine transaminase (ALT) enzymes and testosterone hormone in months and seasons of Iraq. Methods: In this experiment, 20 (2.0-3.5 years old) Iraqi Aw...
Germline cells derived from mesenchymal stem cells, with the focus on Wharton‘s jelly
Previous attempts have indicated that mesenchymal stem cells (MSCs) are a valuable source and candidate and new approach for tissue engineering and reproductive medicine. MSCs have this potential to be induced and differ...