老年男性血清睾酮对代谢综合征各组分的影响

目的 探讨老年男性中血清睾酮对代谢综合征各相关组分的影响.方法 研究对象为48例老年男性,测定身高、体重、体质指数、腰围、血糖、血胰岛素、血脂以及血清睾酮浓度,并用稳态公式（HOMA）计算胰岛素抵抗（HOMA-IR）,分析血清睾酮与代谢综合征（MS）各组分的关系.结果 在老年男性中,随着MS组分数目增多,睾酮水平逐渐下降（P＜0.05）.相关分析显示睾酮浓度和体质指数、腰围、空腹血糖、空腹胰岛素、HOMA-IR呈负相关,与胆固醇、甘油三酯、高密度脂蛋白及血压的相关性不明显.结论 老年男性血清睾酮浓度与肥胖及胰岛素抵抗有密切关系,呈显著负相关.     

二甲双胍+低热量饮食治疗对肥胖型2型糖尿病患者性激素的作用

目的 研究二甲双胍＋低热量饮食对男性肥胖型2型糖尿病（T2DM）患者性激素的作用.方法 选择新诊断的单纯性肥胖病人33例及肥胖型T2DM36例为研究对象,均接受相同的治疗（二甲双胍＋低热量饮食）3月,分别测其治疗前及治疗3月后的血空腹血糖（FPG）、卵泡刺激素（FSH）、黄体生成素（LH）、总睾酮（TT）、游离睾酮（FT）、性激素结合球蛋白（SHBG）、身高、体重、腰围及体重指数（BMI）.结果 与单纯性肥胖组比较,治疗前,T2DM组的体重、腰围、及FSH、FT浓度较低,SHBG浓度较高.与治疗前比较,治疗后T2DM组TT明显下降,FT无改变;单纯性肥胖组FT明显下降,SHBG升高,FPG无改变,治疗后两组的BMI及腰围均显著下降,两组的FSH及LH水平无影响.相关分析提示：治疗后单纯性肥胖组FT改变与SHBG及FSH改变显著相关.T2DM组TT与FSH改变相关.结论 二甲双胍＋低热量饮食可使男性单纯性肥胖患者的FT下降及男性肥胖型T2DM病人的TT下降,而单纯性肥胖组SHBG明显升高;治疗前后两组病例的FSH及LH水平无显著改变,治疗中下丘脑-垂体-性腺轴功能无显著变化.     

8周的基础军训对新疆边防部队新兵人体测量指数影响的分层研究

目的:探讨新兵入伍后8周的基础军事训练,对新兵的人体测量指数的影响。方法:随机抽取新疆边防部队2013年度入警的102名男性新兵,其中汉族67名,维吾尔族35名,分别在训练前后测定并记录身高、体重、腰围、臀围,体质指数和腰臀比。结果:经过8周的基础军事训练,对所有参加测试的新兵而言,体质指数变化不大,腰臀比则显著下降。分层研究表明,经过8周的基础军事训练,体重偏轻(体质指数18.5kg/m2)的新兵,体质指数显著增加,腰围变化不大,臀围显著增加,腰臀比不变;对于正常体重(18.5kg/m2≤BMI25 kg/m2)的新兵,体质指数变化不大,腰围显著降低,臀围显著增加,腰臀比显著降低;对于超重(25kg/m2≤BMI30kg/m2)的新兵,体质指数、腰围、臀围及腰臀比均显著降低。结论:新兵8周的基础军事训练,可以重塑体型,减少腹部脂肪的积聚,促进健康。     

腹型肥胖与男性勃起功能障碍的相关性研究

目的 探讨腹型肥胖与男性勃起功能障碍之间的相关关系.方法 随机选取符合研究条件的男性受试者210例.测量腰围、体重指数、腰臀比.符合标准者于清晨空腹采集外周血标本,使用生化分析仪测定血清总胆固醇(TC)、总甘油三酯(TG)、高密度脂蛋白(HDL)、低密度脂蛋白(LDL)的浓度.用勃起功能障碍国际指数问卷表(IIEF-5)评估这些受试者的勃起功能,并用统计学方法分析两者之间的相关关系.结果 腹型肥胖者勃起功能障碍(ED)的发病率为48.6%.腰围、腰臀比、体重指数与勃起功能评分之间呈负相关.结论 腹型肥胖是影响男性勃起功能的一个重要因素.校正年龄因素后,腰围、腰臀比与体重指数越高勃起功能评分越低.     

体重、体质指数、腰围和腰臀比对正常成人骨密度的影响

目的探讨体重、体质指数(BMI)和腰围、腰臀比(WHR)对正常成人骨密度的影响。方法采用MarcomMx8000多层螺旋CT测定560例正常成人腰椎松质骨密度,将受试者按年龄不同分为青年组、中年组和老年组,然后在同年龄组根据BMI及腰围的不同将受试者分为肥胖组和正常体重组,分析骨密度与体重、BMI、腰围及WHR的关系。结果①以BMI分组,老年肥胖组BMD高于体重正常组(P<0.05);②以腰围分组,中年女性肥胖组BMD低于非肥胖组(P<0.05);③青年组和中年组BMD与腰围及WHR呈负相关,老年组BMD与体重和BMI呈正相关与腰围和WHR不相关。结论预防骨质疏松症在中青年应提倡运动锻炼,避免肥胖,在老年人不应该过分强调降低体重减少肥胖以避免骨量的丢失。     

体质指数和腰臀比对中老年妇女腰椎前凸和骶骨倾斜度的影响

目的：探讨下腰痛患者体质指数（BMI）和腰臀比（wHR）对腰椎前凸和骶骨倾斜度的影响，讨论肥胖致下腰痛的机制。方法：对98例患有下腰痛的中老年妇女进行Roland功能障碍问卷（RDQ），测量身高、体重、腰围和臀围，并计算BMI和WHR。按BMI将病例分成正常组、超重组和肥胖组，按WHR将病例分成非向心性肥胖组和向心性肥胖组。立位摄腰椎X线侧位片，测量腰椎曲线指数（LCI）、腰椎前凸度（Cobb角）和骶骨倾斜角（SSA），对各组所测量的数据进行统计学分析。结果：超重组、肥胖组的LCI、Cobb角、SSA和RDQ明显高于正常组，向心性肥胖组的LCI、Cobb角、SSA和RDQ明显高于非向心性肥胖组。结论：体质指数超过24kg／m^2或腰臀比超过0．85时，均使腰椎前凸和骶骨倾斜度加大、RDQ评分增高。超重、肥胖，或向心性肥胖可致下腰痛。腰椎前凸和骶骨倾斜度增大，可能是肥胖致下腰痛的解剖基础之一。     

中老年男性腰椎曲线与体质指数和腰臀比关系的研究

目的 探讨下腰痛患者腰椎曲线与体质指数(BMI)和腰臀比(WHR)的关系,讨论超重和肥胖致下腰痛的机理.方法 对82例患有下腰痛的中老年男性病人进行Roland功能障碍问卷(RDQ);测量身高、体重、腰围和臀围,并计算BMI和WHR;立位摄腰椎X线侧位片,测量腰椎曲线指数(LCI)、腰椎前凸度(Cobb角)和骶骨倾斜角(SSA),对所测量的数据进行统计学分析.结果 超重组、肥胖组及向心性肥胖组的LCI、Cobb角、SSA和RDQ明显高于正常组.在BMI相同而WHR不同时,WHR超常组的LCI、Cobb角、SSA和RDQ高于WHR正常组.在WHR相同而BMI不同时,超重组和肥胖组的LCI、Cobb角、SSA和RDQ无明显差别.结论 体质指数和腰臀比超常均使腰椎曲度和骶骨倾斜度加大、Roland功能障碍问卷评分增高,腰臀比对其影响明显高于体质指数对其的影响,超重和肥胖,特别是向心性肥胖可致下腰痛.     

男性青少年性腺功能减退症患者短期雄激素替代治疗对血脂和hsCRP水平的影响

目的 探讨性腺功能低减的青少年男性，短期雄激素替代治疗对血脂和超敏C反应蛋白（hsCRP）的影响。方法 本研究为前瞻性自身对照研究，共纳入33例性腺功能减退青少年男性。行短期（9个月）雄激素替代治疗，比较治疗前后血睾酮水平、第二性征发育程度、身高、握力、血红蛋白、血脂和hsCRP的差异。结果 （1）替代治疗后，睾酮水平明显升高，第二性征明显发育，身高、握力、血红蛋白显著增加（P值均〈0.05）；（2）短期雄激素替代治疗后，总胆固醇（TC），低密度脂蛋白（LDL-c），高密度脂蛋白（HDL-c）和甘油三酯（TG）部有所下降，但无统计学差异（P〉0．5）。超敏CRP显著下降（P=0.025）。结论 （1）性腺功能低减的青少年男性，短期雄激素替代治疗，可以促进第二性征发育，增加身高、握力和血红蛋白；（2）短期雄激素替代治疗，对血脂无显著性影响。但是，可以使hsCRP明显下降。     

对诊断PADAM的游离睾酮指数的评估

目的 评价诊断中老年男子部分雄激素缺乏综合征（PADAM）的游离睾酮指数（FTI）.方法 对129例45岁以上健康男性的FTI进行年龄相关分析.以推算的游离睾酮（CFT）值为依据,对FTI进行有效性检验.结果 男子在中老年期FTI与增龄呈明显的负相关.FTI敏感性97.78%,特异性58.33%.结论 计算简单的FTI可用于PADAM病人的筛选和随访,尤其对70岁以上男子是血清FT较为有效的参数.     

前列腺癌双睾切除患者与代谢综合征关系研究

目的 评估前列腺癌患者双睾切除术后代谢综合征患病风险.方法 研究对象为100例老年男性,以美国国家胆固醇教育计划成人治疗小组第三次报告(NCEP-ATP Ⅲ)提出的诊断代谢综合征的标准.实验组为50例因前列腺癌行双睾切除术后1年以上的患者,对照组为上海市男性健康俱乐部50名年龄匹配的男性,测身高、体重、腰围、血压、空腹血糖、血脂、血清总睾酮,计算体重指数(BMI).分析患者行双睾切除术后代谢综合征的风险是否增加.结果 患者双睾切除后体重指数、腰围、甘油三脂、空腹血糖明显高于对照组(P<0.01),而血清总睾酮、高密度脂蛋白明显低于对照组(P<0.01),血压、总胆固醇、低密度脂蛋白与对照组比较差异无统计学意义(P>0.05).结论 前列腺癌患者双睾切除后1年以上,代谢综合征的风险明显增加,预示这些患者有更高的心血管疾病风险.     

Age as a Predictive Factor of Testosterone Improvement in Male Patients After Bariatric Surgery: Preliminary Results of a Monocentric Prospective Study

Background

Male obesity can be associated with symptomatic alterations in sex hormones resulting in hypogonadism and impaired fertility. Surgical-induced weight loss can improve the sex hormone profile in men. The aim of the present study is to evaluate the levels of sex hormones in obese males before and after 6 months from bariatric surgery. Possible mechanisms and clinical implications are also discussed.

Methods

We evaluated levels of serum total testosterone (TT), sex hormone-binding globulin (SHBG), calculated free testosterone (cFT), follicular-stimulating hormone (FSH), luteinizing hormone (LH), and total estradiol (E2) in 20 male patients at the baseline and 6 months after bariatric surgery.

Results

Median [interquartile range] age at the time of surgery was 40.5 [27.2–46.7] years with a median [interquartile range] BMI of 43.6 [40.9–48.7] kg/m². The median baseline levels of TT, SHBG, cFT, LH, and FSH were reduced; levels of E2 were elevated. At 6 months from surgery, the median BMI dropped to 34.8 [31.7–40.5]?kg/m², TT, SHBG, cFT, LH, and FSH increased, while levels of E2 decreased. The improvement in the sex hormone profile was more evident in younger patients, with a statistically significant difference in cFT following surgery and in the raise of TT and cFT between the groups of patients below and above 35 years. At multivariate analysis, the age was the best predictive factor of the postoperative variations of TT.

Conclusions

These preliminary results confirm the general improvement in sex hormone profile in obese men after bariatric surgery and introduce the age as a possible contributing factor to this improvement.     

Serum total and free testosterone level of Japanese men: a population-based study

BACKGROUND: There has never been a large scale population-based study of serum levels of total testosterone (TT) and free testosterone (FT) in Japanese men. METHODS: We determined serum levels of TT and FT of 1120 Japanese men aged 40-79 years using radioimmunoassay (RIA), as a part of a population-based longitudinal study of aging. Of these, sex hormone binding protein (SHBG) was also measured by RIA in 471 men. For the latter group, the calculated free testosterone (cFT) was determined by a formula using serum level of albumin, TT and SHBG. RESULTS: The mean +/- 2 SD of TT, FT and cFT were 513 +/- 326 ng/dL (187-839 ng/dL), 13.2 +/- 7.8) pg/mL (5.4-21.0 pg/mL) and 77.0 +/- 43.4 pg/mL (33.6-120.4 pg/mL), respectively. While TT did not relate to age, FT and cFT decreased with age. FT in the 40-49 years age group was 15.1 +/- 8.4 pg/mL (6.7-23.5 pg/mL), in the 50-59 years age group was 13.9 +/- 6.8 pg/mL (7.1-20.7 pg/mL), in the 60-69 years age group was 12.0 +/- 6.6 pg/mL (5.4-18.6 pg/mL) and in the 70-79 years age group was 11.5 +/- 7.0 pg/mL (4.5-18.5 pg/mL). FT significantly correlated with cFT (Spearman's r = 0.803). The correspondence rates were 92.3% at the mean -1 SD and 98.7% at the mean -2 SD level. CONCLUSIONS: We determined the mean and standard deviation of TT, FT and cFT in Japanese men aged 40 years or older. It is supposed that FT determined by RIA would be useful for diagnosing partial androgen deficiency of aging males.     

Calculated free testosterone and radioimmunoassay free testosterone as a predictor of subnormal levels of total testosterone

Purpose

To evaluate the relationship among aFT, cFT, and total testosterone (TT) and the best method in diagnosing subnormal levels of TT.

Methods

A total of 213 men were analyzed. Fasting blood samples were drawn for the determination of the lipid profile as well as of plasmatic glucose and serum levels of albumin, TT, aFT, and sex hormone-binding globulin (SHBG). The values of cFT were determined by Vermeulen??s formula.

Results

No correlation between aFT and cFT was observed (r?=?0.062; P?=?0.368), except after controlling for confounders (r?=?0.188; P?=?0.007). Only 44.8% of hypogonadal men (TT????300?ng/dL) were classified by aFT, whereas 72.4% of hypogonadal men were classified by both TT and cFT. Sensitivity, specificity, positive and negative predictive values, and positive likelihood ratio were greater in cFT when compared with aFT.

Conclusions

Our results suggest that cFT is more accurate in diagnosing subnormal levels of TT. Furthermore, we do not recommend using aFT due to its lack of accuracy. Further studies should be performed in order to evaluate the correlation between aFT and cFT with clinical signs and symptoms of androgen deficiency.     

Influence of ageing and some lifestyle factors on male gonadal function: a study in Bulgaria

There are few systematic studies on the relationship between blood testosterone concentrations and the symptoms of androgen deficiency in ageing males. To assess the changes in sex hormone levels with age in relation with some lifestyle factors, the serum levels of total testosterone (TT), sex-hormone binding globulin (SHBG), luteinising hormone (LH) and follicle stimulating hormone (FSH) were measured in 33 men, age range 40-89 years. In addition, free testosterone (FT) and the free androgen index (FAI) were calculated. Seventeen healthy men under 40 years were involved as controls. The men over 40 years revealed significantly decreased TT, FT and FAI, and in the subgroup of men over 60 years, FSH and SHBG were significantly increased. Pearson's analysis showed that TT levels were significantly correlated with body mass index (BMI) (r = -0.464, P < 0.01) and body weight (r = -0.413, P < 0.05). SHBG levels were significantly correlated not only with age (r = +0.407, P < 0.05), but also with LH (r = +0.605, P < 0.001) and alcohol consumption (r = +0.382, P < 0.05). In conclusion, the TT, FT and FAI decreased in males over 40 years, but the alterations in hormone levels with age are more pronounced in men over 60 years. The important determinants of sex hormones are age, BMI and some lifestyle factors.     

Relationships between total testicular volume,reproductive parameters and surrogate measures of adiposity in men presenting for couple's infertility

The objective of this study was to investigate the relationships between total testicular volume (TTV), reproductive parameters and adiposity measures: body mass index, waist circumference and waist‐to‐height ratio. Semen analysis was performed, and reproductive hormone levels were measured in 2,672 male patients (mean age 32.6) due to couple's infertility. Significant, positive correlations between semen parameters and the TTV were found. Gonadotrophins were negatively related to the TTV, and testosterone was not related to the TTV. Three anthropometric parameters were negatively correlated to the total sperm count, and sperm concentration seen in men with a TTV of ≤46 ml. In the case of a TTV >46 ml, only the semen volume was inversely correlated with WC and WHtR. These changes occurred from a WHtR ≥0.56, WC ≥102 cm and BMI ≥29 and were more pronounced between WHtR and the TTV. Adiposity was associated with a significant testosterone level decline but did not have a major impact on the gonadotrophin levels. This study shows the divergent results in sperm parameters in different TTV groups in the presence of central adiposity.     

Interactions among age, adiposity, bodyweight, lifestyle factors and sex steroid hormones in healthy Singaporean Chinese men

Aim： To examine the inter-relationships among age, lifestyle factors, anthropometric parameters, percent body fat and steroid hormone parameters in 531 healthy Singaporean Chinese men aged between 29 and 72 years old. Methods： Various lifestyle parameters were quantified through a survey, and testosterone （T）, estradiol （E2）, dehydroepiandrosterone sulphate （DHEAS） and sex hormone binding globulin （SHBG） were measured using established methods. Anthropometric parameters were collected and computed, and percent body fat （Siri） was measured using the DEXA scanner. Results： SHBG, DHEAS, bioavailable-T （Bio-T）, E2, Siri, Ht, W/H, W/Ht and work stress were independently correlated with age. Using multivariate analyses and adjusting for age and other related factors, exercise, smoking and alcohol consumption have positive impacts on androgen levels and body composition. However, black and green tea consumption was associated with negative effects on body composition and with higher levels of E2 and Free Estradiol Index （FEI）. Men with shorter sleep duration had significantly lower T levels as compared to those with 6 h or more of nightly sleep. Higher T levels were associated with lower levels of adiposity and other indices of adiposity, whereas higher E2 levels were related to higher levels of adiposity. Men with higher DHEAS were significantly taller and heavier than those with low DHEAS levels. Conclusion： The study showed the close interactions among the gonadal/adrenal and metabolic compartments, with age being a key determinant in their interactions. Lifestyle factors such as exercise, smoking, sleeping and alcohol and tea consumption might play significantly roles in determining the status of health in men.     

Association among hypogonadism, quality of life and erectile dysfunction in middle-aged and aged male in Taiwan

The association between hypogonadism, quality of life (QoL), and erectile dysfunction (ED) among the middle-aged and aged male in Taiwan is evaluated. A total of 680 study subjects aged >or=40 years old were recruited from Northern (n=276), Middle (n=238), and Southern (n=202) Taiwan, respectively. ED was diagnosed by score of International Index of Erectile Function (IIEF-5). Taiwan version questionnaire for QoL includes domain 1 (physical domain), domain 2 (psychological domain), domain 3 (social relationship domain), and domain 4 (environmental domain) was used to measure QoL. Blood hormones, including FSH, LH, Prolactin, SHBG, total testosterone (TT), calculated free testosterone (cFT), and bioavailable testosterone (Bio-T), were determined. Logistic regression analysis was used to estimate crude and multivariate-adjusted odds ratio of risk factors and its 95% confidence interval. A significantly inverse association between concentration of serum cFT and Bio-T, and severity of ED was observed. Scores of QoL of Domain 1-4 were significantly decreased with the increament of severity of ED. Significant correlations were found between IIEF scores and four domains of QoL, respectively. After adjustment for age, cFT and Bio-T, study subjects with ED (IIEF相似文献   

Testosterone therapy increases sexual desire in ageing men with low-normal testosterone levels and symptoms of androgen deficiency

Although decline in sexual function is a common reason for ageing men to seek advice regarding testosterone therapy, placebo-controlled trial data have been unable to show a consistent, beneficial role for testosterone. The objective of this study was to determine the effect of testosterone therapy on sexual function in non-obese ageing men with symptoms of androgen deficiency and low-normal serum testosterone levels. A total of 60 men aged 55 years or older in good general health with total testosterone (TT) levels <15 nM, and with symptoms suggestive of androgen deficiency, were randomized in a double-blinded protocol to transdermal testosterone patches or placebo for 12 months. Sexual function was assessed using the International Index of Erectile Function at weeks 0, 26 and 52. In men receiving testosterone TT levels increased by 30% (P=0.01) and luteinizing hormone decreased by 50% (P<0.001). Relative to placebo, testosterone therapy improved sexual desire (P=0.04); however other parameters of sexual function including erectile function were unaffected by the treatment. Ageing men in good general health and with symptoms of androgen deficiency and low-normal serum testosterone levels receiving 12 months of transdermal testosterone therapy experienced, relative to placebo, improved sexual desire but no effect on other parameters of sexual function.     

Hypogonadism in men receiving methadone and buprenorphine maintenance treatment

The aim of this study was to determine the prevalence and investigate the aetiology of hypogonadism in men on methadone or buprenorphine maintenance treatment (MMT, BMT). 103 men (mean age 37.6 ± 7.9) on MMT ( n  = 84) or BMT ( n  = 19) were evaluated using hormone assays, body mass index (BMI), serological, biochemical, demographic and substance use measures. Overall 54% of men (methadone 65%; buprenorphine 28%) had total testosterone (TT) <12.0 n m ; 34% (methadone 39%; buprenorphine 11%) had TT <8.0 n m . Both methadone- and buprenorphine-treated men had lower free testosterone, luteinising hormone and estradiol than age-matched reference groups. Methadone-treated men had lower TT than buprenorphine-treated men and reference groups. Prolactin did not differ between methadone, buprenorphine groups, and reference groups. Primary testicular failure was an uncommon cause of hypogonadism. Yearly percentage fall in TT by age across the patient group was 2.3%, more than twice that expected normally. There were no associations between TT and opioid dose, cannabis, alcohol and tobacco consumption, or chronic hepatitis C viraemia. On multiple regression higher TT was associated with higher alanine aminotransferase and lower TT with higher BMI. Men on MMT have high prevalence of hypogonadotrophic hypogonadism. The extent of hormonal changes associated with buprenorphine needs to be explored further in larger studies. Men receiving long term opioid replacement treatment, especially methadone treatment, should be screened for hypogonadism. Wide interindividual differences in methadone metabolism and tolerance may in a cross-sectional study obscure a methadone dose relationship to testosterone in individuals. Future studies of hypogonadism in opioid-treated men should examine the potential benefits of dose reduction, choice of opioid medication, weight loss, and androgen replacement.     

Diabetes mellitus is associated with subnormal serum levels of free testosterone in men

OBJECTIVE: To evaluate the relationship between diabetes mellitus (DM) and serum levels of free (FT) and total (TT) testosterone. PATIENTS AND METHODS: A cross-sectional study was carried out including 746 men, of whom 116 (15.6%) were diabetics. Both groups, diabetic and nondiabetic, were paired according to age. Body mass index (BMI) and waist-to-hip ratio (WHR) were calculated, and a stratification analysis correlating DM and elevated BMI (>25 kg/m(2)) and WHR (>1) with the presence of subnormal FT and TT levels was performed. RESULTS: FT and TT serum levels were subnormal in 46% and 34% of diabetics, respectively, and in 24% and 23% of nondiabetics. Subnormal FT levels were strongly correlated with DM (odds ratio (OR) 2.7; 95% confidence interval (CI) 1.8-4.1) but not with elevated BMI (OR 1.4; 95% CI 1.0-2.0). Subnormal TT levels were more strongly associated with elevated BMI and WHR (OR 2.6; 95% CI 1.7-3.9 and 2.0; 1.4-2.9) than with DM (1.7; 1.1-2.6 and 2.0; 1.3-3.2). CONCLUSION: These data strongly suggest that DM is associated with subnormal FT levels, and that TT levels are influenced more by obesity and central adiposity.