Cross-Sectional Inverse Associations of Obesity and Fat Accumulation Indicators with Testosterone in Non-Diabetic Aging Men

Rotter, Iwona; Rył, Aleksandra; Grzesiak, Katarzyna; Szylińska, Aleksandra; Pawlukowska, Wioletta; Lubkowska, Anna; Sipak-Szmigiel, Olimpia; Pabisiak, Krzysztof

doi:10.3390/ijerph15061207

Cited by 20 publications

(27 citation statements)

References 34 publications

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“…Associations of GRS with obesity-related traits in the present study were not identified in either elderly men or elderly women, suggesting that genetic factors had a very little contribution in the elderly population. Numerous studies have indicated that hormonal factors contribute to obesity in the elderly, with the decline in testosterone being associated with an increased risk for obesity in aging men [46]. In women, aging is associated with a decline in estrogen, which is known to protect against weight gain by increasing energy expenditure.…”

Section: Discussion/conclusionmentioning

confidence: 99%

Sexual Dimorphism of a Genetic Risk Score for Obesity and Related Traits among Chinese Patients with Type 2 Diabetes

et al. 2019

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Background: Obesity is more prevalent in men than in women in China, especially within the middle-aged population. Objectives: The present study aims to determine the contribution of sexual dimorphisms to obesity and related traits in terms of the mechanisms involving the obesity-related genetic variants among patients of Chinese Han ancestry with type 2 diabetes. Method: In the Chinese National Diabetes and Metabolic Disorders Study, 2,555 out of 4,036 patients with type 2 diabetes were treatment naive, including 1,142 men and 1,413 women. Single-nucleotide polymorphisms (SNP) from 18 genomic loci previously found to be associated with obesity-related traits were successfully genotyped, and a genetic risk score (GRS) was constructed by summing the risk alleles for obesity. Results: Single SNP analysis showed that genetic variants in SLC30A10, TMEM18, GNPDA2, PRL, TFAP2B, BDNF, MTCH2, FTO, and MC4R were nominally associated with waist circumference (WC), BMI, and risk for abdominal or general obesity in the untreated patients with type 2 diabetes, as well as in the total group of patients with type 2 diabetes (untreated and treated) (p < 0.05). Interactions between sex and SNP in PRL, MTCH2,and FTO were detected (p < 0.05). In the untreated patients with diabetes, the GRS was nominally associated with WC (β = 0.0032, SE = 0.0011; p = 0.003), BMI (β = 0.0030, SE = 0.0013; p = 0.027), and increased risk for abdominal (OR = 1.08; 95% CI 1.02–1.13; p = 0.004) or general obesity (OR = 1.07; 95% CI 1.02–1.13; p = 0.011) in men but not in women. GRS-sex interactions were detected in the determinant of WC (p = 0.019) and abdominal obesity (p = 0.016). Among patients aged 30–60 years, GRS was found to be significantly associated with WC (β = 0.0050, SE = 0.0016; p = 0.002) and abdominal obesity (OR = 1.10; 95% CI 1.04–1.17; p = 0.001) and nominally associated with BMI (β = 0.0057, SE = 0.0020; p = 0.005) and general obesity (OR = 1.07; 95% CI 1.01–1.14; p = 0.027) in men, whereas in women none of the associations were detected. GRS-sex interactions were present in the determinant of WC (p = 0.015), BMI (p = 0.032), and abdominal obesity (p = 0.012). Among patients aged 60 years or older, neither an association of GRS with obesity-related traits nor GRS-sex interactions were detected. Conclusions: Genetic factors contribute to obesity-related traits in a sex-dependent pattern among middle-aged Chinese, and men tend to be more susceptible to the genetic risk of obesity.

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Section: Discussion/conclusionmentioning

confidence: 99%

Sexual Dimorphism of a Genetic Risk Score for Obesity and Related Traits among Chinese Patients with Type 2 Diabetes

et al. 2019

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“…Although aging men do not experience a menopause-like dramatic decrease in sex hormone levels as experienced by women, testosterone levels decline steadily with age in men [34]. These declining testosterone levels are associated with elevated visceral adiposity observed in aging men [35], which may play a role in increased cardiovascular risk in aging men. Testosterone therapy has been shown to increase muscle mass/decrease fat mass in older men [36, 37]; therefore, long-term therapy may improve metabolic health by improving lean/fat mass ratio.…”

Section: Main Textmentioning

confidence: 99%

Sex hormones, aging and cardiometabolic syndrome

Faulkner

Chantemèle

2019

Biol Sex Differ

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It is well documented that the metabolic syndrome predisposes patients to increased cardiovascular risk. Emerging data indicates that cardiovascular risk conferred by metabolic syndrome is highly dependent on sex and sex hormone status throughout the lifetime. Both male and female sex hormones, as well as sex chromosomes themselves, contribute to the development of obesity and intervene in the control of insulin homeostasis and blood pressure. Furthermore, men and women develop age-associated cardiometabolic risk in a sex-specific fashion in association with changes in these sex hormonal levels. Therefore, the current notion of the metabolic syndrome as a sex-independent diagnosis is antiquated, and novel studies and clinical trials utilizing these known sex differences in the development of metabolic dysregulation and cardiometabolic risk are warranted.

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“…High serum testosterone is associated with reduced subcutaneous and increased abdominal adiposity in women, while low testosterone is associated with the same effect in men [25][26][27]. In older men, sex hormone levels do not decrease as rapidly as in menopausal women however, testosterone levels decline steadily with age [28].These declining testosterone levels have been reported to be associated with elevated visceral adiposity in older men [29]. This may play a role in increased risk of cardiovascular diseases in aging men.…”

Section: Discussionmentioning

confidence: 98%

Clinical Impact of Estradiol/Testosterone Ratio in Patients with Acute Ischemic Stroke

Choi

Ryoo

Hong

et al. 2020

Preprint

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Background: Sex hormones may be associated with a higher incidence of ischemic stroke or stroke-related events. In observational studies, lower testosterone concentrations are associated with infirmity, vascular disease, and adverse cardiovascular risk factors. Currently, female sexual hormones are considered neuroprotective agents. The purpose of this study was to assess the role of sex hormones and the ratio of estradiol/testosterone (E/T) in patients with acute ischemic stroke (AIS). Methods: Between January 2011 and December 2016, 146 male patients with AIS and 152 age- and sex-matched control subjects were included in this study. Sex hormones, including estradiol, progesterone, and testosterone, were evaluated in the AIS patient and control groups. We analyzed the clinical and physiological levels of sex hormones and hormone ratios in these patients.Results: The E/T ratio was significantly elevated among patients in the stroke group compared to those in the control group (P = 0.001). Categorization of data into tertiles revealed that patients with the highest E/T ratio were more likely to have AIS [odds ratio (OR) 3.084; 95% Confidence interval (CI): 1.616-5.886; P < 0.001) compared with those in the first tertile. The E/T ratio was also an independent unfavorable outcome predictor with an adjusted OR of 1.167 (95% CI: 1.053-1.294; P = 0.003).Conclusions: These findings support the hypothesis that increased estradiol and reduced testosterone levels are associated with AIS in men.

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Cross-Sectional Inverse Associations of Obesity and Fat Accumulation Indicators with Testosterone in Non-Diabetic Aging Men

Cited by 20 publications

References 34 publications

Sexual Dimorphism of a Genetic Risk Score for Obesity and Related Traits among Chinese Patients with Type 2 Diabetes

Sexual Dimorphism of a Genetic Risk Score for Obesity and Related Traits among Chinese Patients with Type 2 Diabetes

Sex hormones, aging and cardiometabolic syndrome

Clinical Impact of Estradiol/Testosterone Ratio in Patients with Acute Ischemic Stroke

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