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The association between serum estradiol levels and sperm DNA integrity
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- Lu, Viktor (author)
- Skåne University Hospital
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- Svensjö, Oscar (author)
- Skåne University Hospital
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- Axelsson, Jonatan (author)
- Lund University,Lunds universitet,Reproduktionsmedicin, Malmö,Forskargrupper vid Lunds universitet,EPI@LUND,Reproductive medicine, Malmö,Lund University Research Groups,University of Ottawa,Skåne University Hospital
- (creator_code:org_t)
- 2022-08-25
- 2022
- English 7 s.
- In: Environmental and Molecular Mutagenesis. - : Wiley. - 0893-6692 .- 1098-2280. ; 63:6, s. 268-274
- Journal article (peer-reviewed)
Abstract
Subject headings
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- In men from the general population, BMI has been associated with a lower sperm DNA fragmentation index (DFI). We wondered whether this could be due to estradiol, which is associated with BMI and reported important for sperm function. Our objective was to investigate the association between estradiol and DFI. In 2008–2010, we recruited 284 young men from the general population to deliver samples of semen and blood and answer questionnaires. Serum concentrations of reproductive hormones and DFI were analyzed, the latter using the Sperm Chromatin Structure Assay. Associations were studied using general linear models. The first model utilized metric values of estradiol, whereas the second model compared men with high and low levels, dichotomized by the median value. A possible interaction between estradiol and testosterone was also examined. When investigating metric estradiol levels and DFI, an inverse association was seen without adjustments (p =.02), but the statistical significance was lost at adjustments for potential confounders (p =.08). Men with lower estradiol levels (<88 pmol/L, mean 71 pmol/L) had a statistically significantly higher DFI than men with higher levels of estradiol (≥88 pmol/L, mean 110 pmol/L). Mean ratio difference was 1.21 (p =.002) without adjustments and 1.18 (p =.01) with adjustments. A statistically significant difference in DFI was observed in men with testosterone levels below median when comparing high and low estradiol (p <.001). This study supports the idea that serum estradiol levels are protective for sperm DNA integrity, at least at lower testosterone levels.
Subject headings
- MEDICIN OCH HÄLSOVETENSKAP -- Hälsovetenskap -- Arbetsmedicin och miljömedicin (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Health Sciences -- Occupational Health and Environmental Health (hsv//eng)
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Reproduktionsmedicin och gynekologi (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Obstetrics, Gynaecology and Reproductive Medicine (hsv//eng)
Keyword
- body mass index
- estrogen
- sperm DNA damage
- sperm DNA fragmentation
- sperm DNA integrity
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- art (subject category)
- ref (subject category)
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