無線網(wǎng)絡(luò)已經(jīng)是人們生活中不可或缺的一部分,。但阿根廷一項(xiàng)研究顯示,,這個日常生活好幫手可能是扼殺人類生殖能力的“幕后黑手”,。
研究報告由最新一期美國《生育與不孕》(Fertility and Sterility)月刊發(fā)表,。
阿根廷科多爾瓦省納塞提斯生殖醫(yī)學(xué)中心研究人員設(shè)計一項(xiàng)實(shí)驗(yàn),。
研究人員從29個健康男性身上獲取精液樣本,,分成兩份,,一份放在正使用無線網(wǎng)絡(luò)下載文件的筆記本電腦下,另有一份放在遠(yuǎn)離筆記本電腦的地方,。
四個小時后,,研究人員觀察精液樣本中的精子活性。
他們發(fā)現(xiàn),,放在筆記本電腦下的精液樣本中,,四分之一的精子不再游動,9%出現(xiàn)DNA(脫氧核糖核酸)損傷。同等溫度條件下,,放在遠(yuǎn)離筆記本電腦的精液樣本中,,只有14%的精子停止活動,3%出現(xiàn)DNA損傷,。
研究負(fù)責(zé)人孔拉多·阿文達(dá)尼奧說,,造成這種情況的“罪魁禍?zhǔn)?rdquo;是無線通信時產(chǎn)生的電磁輻射。
路透社11月28日引述他在研究報告中的話報道:“我們的數(shù)據(jù)顯示,,把正在連接無線網(wǎng)絡(luò)的筆記本電腦放在男性生殖器官附近,,會降低精子質(zhì)量。”他說:“當(dāng)前尚不清楚是否所有品牌筆記本電腦在連接無線網(wǎng)絡(luò)時都會產(chǎn)生這種影響,,也不知道何種使用方法會讓影響進(jìn)一步深化,。”
研究人員單獨(dú)測試已開啟但沒有進(jìn)行無線網(wǎng)絡(luò)連接的筆記本電腦電磁輻射量,發(fā)現(xiàn)這種輻射量小到可以忽略不計,。
先前也有研究證實(shí),,手機(jī)發(fā)出的電磁輻射同樣有損精子質(zhì)量,另外,,男性若長時間把筆記本電腦置于腿上使用,,會令陰囊溫度升高,有害精子,。
美國男性生殖與泌尿協(xié)會負(fù)責(zé)人羅伯特·奧茨不認(rèn)同阿根廷研究人員這項(xiàng)研究結(jié)果,。在他看來,筆記本電腦不會對男性生殖能力產(chǎn)生明顯影響,。
“這并非現(xiàn)實(shí)的生物學(xué)……從科學(xué)角度來說,,這研究有點(diǎn)意思,但在人類生物學(xué)方面沒有任何實(shí)用性,,”奧茨說,。
美國泌尿協(xié)會統(tǒng)計數(shù)字顯示,當(dāng)前有六分之一美國已婚婦女受孕困難,,男女方的原因各占一半,。
《生育與不孕》月刊今年早些時候發(fā)表文章說,接受不孕治療的夫妻中,,大量吃水果和谷類、少吃紅肉,、少喝咖啡和酒的男性更容易令妻子受孕,。奧茨也同意這一觀點(diǎn),談到如何提高懷孕幾率,,他說:“你得讓自己的身體保持健康,,吃健康食品,多鍛煉,不要服用藥物也不要吸煙,。”(生物谷Bioon.com)
doi:10.1016/j.fertnstert.2011.10.012
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Use of laptop computers connected to internet through Wi-Fi decreases human sperm motility and increases sperm DNA fragmentation
Conrado Avendano M.S., Ariela Mata M.S., César A. Sanchez Sarmiento M.D., Ph.D., Gustavo F. Doncel M.D., Ph.D
Objective To evaluate the effects of laptop computers connected to local area networks wirelessly (Wi-Fi) on human spermatozoa. Design Prospective in vitro study. Setting Center for reproductive medicine. Patient(s) Semen samples from 29 healthy donors. Intervention(s) Motile sperm were selected by swim up. Each sperm suspension was divided into two aliquots. One sperm aliquot (experimental) from each patient was exposed to an internet-connected laptop by Wi-Fi for 4 hours, whereas the second aliquot (unexposed) was used as control, incubated under identical conditions without being exposed to the laptop. Main Outcome Measure(s) Evaluation of sperm motility, viability, and DNA fragmentation. Result(s) Donor sperm samples, mostly normozoospermic, exposed ex vivo during 4 hours to a wireless internet-connected laptop showed a significant decrease in progressive sperm motility and an increase in sperm DNA fragmentation. Levels of dead sperm showed no significant differences between the two groups. Conclusion(s) To our knowledge, this is the first study to evaluate the direct impact of laptop use on human spermatozoa. Ex vivo exposure of human spermatozoa to a wireless internet-connected laptop decreased motility and induced DNA fragmentation by a nonthermal effect. We speculate that keeping a laptop connected wirelessly to the internet on the lap near the testes may result in decreased male fertility. Further in vitro and in vivo studies are needed to prove this contention.