scholarly journals Serum sex hormone and plasma homocysteine levels in middle-aged and elderly men

2006 ◽  
Vol 155 (6) ◽  
pp. 887-893 ◽  
Author(s):  
Hamid Reza Nakhai Pour ◽  
Diederick E Grobbee ◽  
Majon Muller ◽  
Marielle Emmelot-Vonk ◽  
Yvonne T van der Schouw

Objective: To investigate whether circulating levels of testosterone (total, bioavailable), estradiol (total, bioavailable), and DHEA sulfate (DHEAS) are associated with fasting plasma homocysteine (tHcy) levels in middle-aged and elderly men. Design: A population-based sample of 400 independently living men between 40 and 80 years of age in a cross-sectional study. Methods: Total testosterone, sex hormone binding globulin (SHBG), and total estradiol were measured by RIA methods and bioavailable testosterone and estradiol were calculated. DHEAS was measured using an immunometric technique. Fasting homocysteine was measured by fluorescence polarization immunoassay. Anthropometric characteristics were also measured and two standardized questionnaires completed, including life-style factors and diet. Linear regression analysis adjusted for age, body mass index (BMI), creatinine clearance, and mean visceral fat was used to assess the association of endogenous sex hormones and fasting plasma homocysteine levels. Results: After adjustment for age, BMI, creatinine clearance, and mean visceral fat no statistically significant association was observed between testosterone (total, bioavailable), DHEAS, and estradiol (total, bioavailable)levels with natural log tHcy (β = −2 × 10−3; 95% confidence intervals (CI) −9 × 10−3; 5 × 10−3), (β = −4 × 10−3; 95% CI −18 × 10−3; 9 × 10−3), (β = 3 × 10−3; 95% CI −6 × 10−3; 12 × 10−3), (β = −9.3 × 10−5; 95% CI −1 × 10−3; 1 × 10−3), and (β = 0.00; 95% CI −3 × 10−3; 2 × 10−3) respectively. Additional adjustment for smoking, alcohol intake, daily physical activity, diabetes mellitus, and hypertension did not change these findings. Conclusion: The results of our study do not support a direct role for circulating sex hormone levels in the regulation of fasting plasma tHcy concentrations in middle-aged and elderly men.

Diabetes Care ◽  
2007 ◽  
Vol 30 (4) ◽  
pp. e13-e13 ◽  
Author(s):  
U. M. Rajala ◽  
S. M. Keinanen-Kiukaanniemi ◽  
P. K. Hirsso ◽  
J. J. Jokelainen ◽  
M. A. Laakso ◽  
...  

2022 ◽  
Vol 12 ◽  
Author(s):  
Yuxia Ma ◽  
Ruiqiang Li ◽  
Wenqiang Zhan ◽  
Xin Huang ◽  
Yutian Zhou ◽  
...  

ObjectivesThis study aimed to assess the relationship between dietary inflammatory index (DII) and sex steroids in children (6-11 years old) and adolescents (12-19 years old) in the U.S. National Health and Nutrition Examination Survey, 2015–2016.MethodsParticipants between the ages of 6-19 have 24-hour dietary intake data, serum sex hormones [total testosterone (TT), estradiol (E2)], and sex hormone-binding globulin (SHBG) available data (n = 1382). The free androgen index (FAI) is calculated as TT divided by SHBG and the ratio of TT to E2 (TT/E2). The constructed puberty state is defined as high levels of steroid hormones (TT≥50 ng/dL in men, E2≥20 pg/ml in women) or onset of menarche. Multiple linear regression analysis was stratified by gender-age and gender-pubertal status groups to evaluate the association between DII and sex hormone levels.ResultsAfter adjusting for covariates, the association between consecutive DII and sex hormone indicators by gender and age group. In male adolescents, DII was always negatively associated with TT (P-trend = 0.09), FAI (P-trend = 0.03) and E2 (P-trend = 0.01), and monotonically positively associated with SHBG (P-trend = 0.02).In female adolescents, with the increase of DII, a significant positive correlation with SHBG was observed (β 0.017, 95%CI: 0.009,0.053) (Table 3). Among female adolescents, a significant negative association between DII and TT and a significant positive association between SHBG were observed in this group. Moreover, DII was positively associated with SHBG of prepubertal males and negatively associated with FAI of prepubertal females.ConclusionsDII was associated with decreased levels of certain sex steroid hormones (TT, FAI, and E2) and increased levels of SHBG in adolescents or pubertal individuals, with the associations presenting somewhat sex-dependent pattern. However, there is little evidence that there is a significant association in children or prepubertal children. Further research needs to be carried out to verify our results.


2015 ◽  
Vol 173 (2) ◽  
pp. 155-165 ◽  
Author(s):  
Catherine E de Keyser ◽  
Filipe Valerio de Lima ◽  
Frank H de Jong ◽  
Albert Hofman ◽  
Yolanda B de Rijke ◽  
...  

ObjectiveStatins, or HMG-CoA reductase inhibitors, decrease cholesterol production. Because cholesterol is a precursor of the testosterone biosynthesis pathway, there is some concern that statins might lower serum testosterone levels. The objective of the present study was to investigate the association between the use of statins and serum testosterone levels in men.DesignCross-sectional study within the prospective population-based Rotterdam Study.Subjects and methodsWe included 4166 men with available data on total testosterone, non-sex hormone-binding globulin (SHBG)-bound testosterone, and medication use. Multivariable linear regression analysis was used to compare the differences in serum testosterone levels (nmol/l) between current, past, and never statin users. We considered dose and duration of use. Analyses were adjusted for age, BMI, cardiovascular disease, diabetes mellitus, hypertension, and estradiol levels.ResultsWe identified 577 current (mean age 64.1 years), 148 past (mean age 64.6 years), and 3441 never (mean age 64.6 years) statin users. Adjusted for all covariables, current statin use of 1–≤6 months or >6 months was significantly associated with lower total testosterone levels as compared to non-users (β −1.24, 95% CI −2.17, −0.31, and β −1.14, 95% CI −2.07, −0.20 respectively). Current use of 1–≤6 months was also associated with significantly lower non-SHBG-bound testosterone levels (β −0.42, 95% CI −0.82, −0.02). There was a trend toward lower testosterone levels at higher statin doses both for total (Ptrend 2.9×10−5) and non-SHBG-bound (Ptrend 2.0×10−4) testosterone. No association between past statin use and testosterone levels was found.ConclusionWe showed that current use of statins was associated with significantly lower serum total and non-SHBG-bound testosterone levels. The clinical relevance of this association should be further investigated.


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