Abstract:
OBJECTIVE:Leptin serves as a hormonal signal linking food intake and energy expenditure to fat mass. As significant effects of testosterone administration on body composition and adipose tissue have been described recently, we examined a possible association between serum levels of leptin and testosterone which has not been reported so far. SUBJECTS:Three groups comprising a total of 58 adult age-matched males were included in this cross-sectional analysis by computer-assisted clinical database selection. Group 1 (n = 22) consisted of untreated hypogonadal patients with testosterone serum levels lower than 7 nmol/l. The inclusion criterion for Groups II (n = 20) and III (n = 16) was a serum testosterone level higher than 30 nmol/l. Group II involved hypogonadal patients under effective androgen substitution therapy; Group III comprised males without any endocrine disorder attending our clinic. MEASUREMENTS:Morning blood samples were taken for determination of serum levels of leptin, testosterone, oestradiol and sex-hormone binding globulin (SHBG). Serum levels of leptin were measured by homologous radioimmunoassay, the other hormones by standard immunoassays. RESULTS:No significant differences in serum leptin, serum testosterone, and body mass index (BMI) were detected between Group II (3.7 +/- 1.5 micrograms/l, 40.3 +/- 7.6 nmol/ l, 24.4 +/- 4.9 kg/m2, respectively (mean +/- SD)), and Group III (4.0 +/- 2.0 micrograms/l, 35.9 +/- 6.5 nmol/l, 24.8 +/- 2.6 kg/m2, respectively). However, hypogonadal patients of Group I who were selected for low testosterone serum levels (4.3 +/- 1.7 nmol/l) had significantly higher leptin serum levels of 18.8 +/- 9.7 micrograms/l (P < 0.001) and significantly higher BMI of 30.0 +/- 6.6 kg/m2 (P < 0.001). Multiple linear regression analysis revealed a significant independent association of leptin with testosterone serum levels (partial correlation coefficient = -0.84; P < 0.001) and with BMI (partial correlation coefficient = 0.44; P = 0.001), whereas serum levels of oestradiol and SHBG had no additional influence. CONCLUSIONS:This study demonstrates a close association between serum levels of testosterone and leptin in males which has not been described previously. Serum testosterone levels could be an important contributor to the known gender difference in serum leptin levels which can be found even after correction for body composition. These findings might be of clinical relevance for testosterone substitution therapy of hypogonadal as well as ageing men.
journal_name
Clin Endocrinol (Oxf)journal_title
Clinical endocrinologyauthors
Behre HM,Simoni M,Nieschlag Edoi
10.1046/j.1365-2265.1997.2681067.xsubject
Has Abstractpub_date
1997-08-01 00:00:00pages
237-40issue
2eissn
0300-0664issn
1365-2265journal_volume
47pub_type
杂志文章abstract::The catechol oestrogen 2-hydroxyoestrone has been reported to lower serum prolactin concentrations acutely in normal women and it has been proposed that it may be effective in suppressing prolactin secretion in hyperprolactinaemic patients. Five women with hyperprolactinaemia and anovulation were studied. Following a ...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.1981.tb00678.x
更新日期:1981-10-01 00:00:00
abstract:OBJECTIVE:Malignant phaeochromocytomas are rare and highly aggressive tumours. This retrospective study evaluated the outcome of combined chemotherapy with cyclophosphamide, vincristine and dacarbazine (also known as CVD regimen). METHODS:Patients with histologically and radiologically confirmed malignant phaeochromoc...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/cen.12590
更新日期:2015-01-01 00:00:00
abstract:CONTEXT:Unlike pituitary macroadenomas, microadenomas (micros) are not commonly associated with hypopituitarism. In clinical practice, we have observed that patients with ACTH-secreting micros have a higher than expected prevalence of central hypothyroidism (HT), and we speculated that this effect might be because of g...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.2012.04442.x
更新日期:2012-12-01 00:00:00
abstract:BACKGROUND:The development of hepatocellular carcinoma in liver cirrhosis is associated with altered synthesis and secretion of several growth factors. AIM:The aim of this prospective study was to investigate the potential implication of IGF-I and its major binding protein (IGFBP-3) in the development of hepatocellula...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1046/j.1365-2265.2003.01909.x
更新日期:2003-12-01 00:00:00
abstract:OBJECTIVE:To estimate the frequency of the metabolic syndrome (MS) and of the insulin resistance syndrome (IRS) in overweight or obese French children and to determine the risk factors. DESIGN, PATIENTS AND METHODS:A total of 308 overweight and obese children [166 girls, 142 boys, aged 7-17 years; median body mass ind...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.2006.02526.x
更新日期:2006-06-01 00:00:00
abstract::Biochemical markers of bone turnover are widely used in clinical practice. These indices have been shown to be associated with the occurrence, prognosis and therapeutic response of malignant bone lesions. For example, markers of bone resorption are often elevated in patients with established bone metastases and while ...
journal_title:Clinical endocrinology
pub_type: 杂志文章,评审
doi:10.1111/j.1365-2265.2007.03112.x
更新日期:2008-06-01 00:00:00
abstract:CONTEXT:Carney complex (CNC) is an autosomal dominant multiple endocrine neoplasia syndrome (OMIM 160980). About 70% of cases are familiar; most have mutations of the PRKAR1A gene on chromosome 17q22-24. There is little phenotype-genotype correlation known to date. OBJECTIVE:To study the genotype-phenotype correlation...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.2008.03286.x
更新日期:2008-11-01 00:00:00
abstract::Changes in the excretion of urinary cyclic AMP, calcium and phosphate, and serum calcium, ionized calcium, and magnesium were studied after parathyroidectomy for primary hyperparathyroidism. Urinary cyclic AMP decreased rapidly and 8 of 11 patients had a significant reduction 1 h postoperatively, but changes in serum ...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.1983.tb00581.x
更新日期:1983-04-01 00:00:00
abstract:BACKGROUND:In patients with acromegaly serum IGF-I is increasingly used as a marker of disease activity. As a result, the relationship between serum GH and IGF-I is of profound interest. Healthy females secrete three times more GH than males but have broadly similar serum IGF-I levels, and women with GH deficiency requ...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1046/j.1365-2265.2002.01560.x
更新日期:2002-07-01 00:00:00
abstract:OBJECTIVE:The diagnosis of the nonclassical form of 21-hydroxylase (NC-21OH) deficiency, established before molecular studies, is based on basal 17OH-progesterone (17OH-P) values > 15 nmol/l or ACTH-stimulated 17OH-P values > 30 nmol/l. This disease is caused by mutations in the structural gene that can be grouped into...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1046/j.1365-2265.2000.00995.x
更新日期:2000-05-01 00:00:00
abstract:BACKGROUND:Type 1 diabetes mellitus (T1DM) is associated with skeletal fragility. While previous meta-analyses have demonstrated an increased risk of fracture in individuals with T1DM, little is known about fracture risk in T1DM, in the absence of age-related confounders. AIMS:To determine the risk of fracture in youn...
journal_title:Clinical endocrinology
pub_type: 杂志文章,meta分析,评审
doi:10.1111/cen.13761
更新日期:2018-09-01 00:00:00
abstract:BACKGROUND:Graves' Ophthalmopathy (GO) is a complex eye and orbital disorder that is uniquely linked to Graves' Hyperthyroidism (GH) and has traditionally been considered a cross-reactive immune response against the thyroid stimulating hormone receptor (TSHR) in orbital tissue. However, because there is no direct evide...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.2009.03753.x
更新日期:2010-10-01 00:00:00
abstract:OBJECTIVE:It has been postulated that a decrease in thyroid size can be achieved by thyroxine treatment in patients with goitrous Hashimoto's thyroiditis but no objective data are available. We have therefore investigated the influence of thyroxine treatment on ultrasonically determined thyroid size. We also measured s...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.1991.tb03528.x
更新日期:1991-09-01 00:00:00
abstract::Lactation has been associated with suppression of some components of the neuroendocrine stress response. In humans, suppression of the hypothalamo-pituitary-adrenal (HPA) axis has been demonstrated in response to both a psychological and an exercise challenge, but appears to be limited to a short period of time follow...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.2004.02133.x
更新日期:2004-11-01 00:00:00
abstract::Nutrition and growth during infancy are an emerging issue because of their potential link to metabolic health disorders in later life. Moreover, prolonged breast-feeding appears to be associated with a lower risk of obesity than formula feeding. Human milk is a source of various hormones and growth factors, namely adi...
journal_title:Clinical endocrinology
pub_type: 杂志文章,评审
doi:10.1111/j.1365-2265.2009.03585.x
更新日期:2009-12-01 00:00:00
abstract:OBJECTIVE:Vaspin is associated with metabolic parameters and insulin resistance. However, the expression of vaspin in visceral adipose tissue (VAT) in pregnant women with gestational diabetes mellitus (GDM) has not been fully explored, and the contribution of vaspin to the biological mechanisms underlying GDM remains u...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/cen.13403
更新日期:2017-10-01 00:00:00
abstract::Serum thyroxine was consistently unmeasurable by radioimmunoassay in an elderly patient with myxoedema after successful treatment with oral thyroxine. Abnormal binding of thyroxine was suspected and shown to be due to the presence in serum of antibodies of the IgG variety. The characteristics of these antibodies with ...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.1981.tb02741.x
更新日期:1981-07-01 00:00:00
abstract:OBJECTIVES:Associations between calcium-sensing receptor (CaSR) polymorphisms and serum calcium, PTH and bone mineral density (BMD) have been reported by six studies. However, three other studies have failed to detect such associations. We therefore further investigated three CaSR coding region polymorphisms (Ala986Ser...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.2006.02634.x
更新日期:2006-11-01 00:00:00
abstract::Seven synthetic analogues of somatostatin helped clarify structural requirements for suppression of growth hormone secretion in rats. Size of the ring is not critical; deletions of serine-13, lysine-4 or asparagine-5 result in peptides which retain an appreciable fraction of the activity. The analogue des-Ala1, Gly2, ...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.1976.tb03835.x
更新日期:1976-01-01 00:00:00
abstract::Two main types of RET/PTC oncogene, named RET/PTC-1 and 3, occur in papillary thyroid carcinomas especially in those from Belarus children after the Chernobyl nuclear accident. Several variants of RET/PTC-3 have also been found, having different break points with respect to the classical RET/PTC-3. To our knowledge, n...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1046/j.1365-2265.2000.01046.x
更新日期:2000-07-01 00:00:00
abstract:BACKGROUND:Acromegalic patients have increased prevalence of colonic polyps. Development of hyperplastic polyps was related to suppressor of cytokine signalling (SOCS) 2 haploinsufficiency in animal models of acromegaly. OBJECTIVE AND PATIENTS:To evaluate whether variations in SOCS2 expression in the colonic mucosa of...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.2008.03431.x
更新日期:2009-06-01 00:00:00
abstract:OBJECTIVE AND DESIGN:The immediate early gene locus AP-1, incorporating the cellular oncogenes c-fos and c-jun (and their oncoprotein products Fos and Jun respectively) play a key role in regulating cell growth and differentiation. The myc-gene is also known to promote cell growth. In order to investigate the possible ...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.1994.tb02453.x
更新日期:1994-01-01 00:00:00
abstract::The HLA-A and -B antigen distribution in 132 Hong Kong Chinese patients with Graves' disease, including 24 with thyrotoxic periodic paralysis, was compared with that in 110 controls. The HLA-DR antigen distribution in 68 patients was compared with that in 47 controls. The prevalence of Bw46 was significantly increased...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.1985.tb00220.x
更新日期:1985-09-01 00:00:00
abstract:OBJECTIVE:Phaeochromocytomas (PHEO) and functional paragangliomas (PGLs) are catecholamine-secreting neuroendocrine tumours. Although most PHEO/PGLs are benign, 10-35% present as (or develop into) malignant tumours with a poor prognosis. Overexpression of ERBB2 (v-erb-b2 erythroblastic leukaemia viral oncogene homologu...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.2012.04388.x
更新日期:2012-09-01 00:00:00
abstract:BACKGROUND:The Interleukin (IL)-10 polymorphic variants -1082G/A, -819C/T and -592C/A were linked with obesity, metabolic syndrome, and type 2 diabetes (T2DM). We investigated the hypothesis that IL-10 promoter polymorphisms may be associated with the progression of diabetic nephropathy (DN). DESIGN:Case-controlled st...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.2008.03337.x
更新日期:2009-03-01 00:00:00
abstract::Six healthy subjects were infused with angiotensin II and plasma concentrations of angiotensin, ACTH and cortisol were measured before, during and after the infusion. In all cases the plasma ACTH concentration fell as plasma angiotensin increased and rose again, sometimes to higher than basal levels, when the angioten...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.1979.tb01359.x
更新日期:1979-02-01 00:00:00
abstract::We have recently reported an impaired growth hormone (GH) response to a single i.v. bolus dose of growth hormone releasing factor (1 microgram/kg body weight) in obese women. We have now investigated whether the i.v. administration of low dose GHRF(1-29)NH2 (0.33 microgram/kg/h) by 15 min pulsed injections for 3 h fol...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.1986.tb00758.x
更新日期:1986-02-01 00:00:00
abstract:OBJECTIVE:Subclinical hypercortisolism (SH) has been associated with increased prevalence of hypertension, type 2 diabetes mellitus, dyslipidaemia, central obesity, osteoporosis and vertebral fractures. We aimed to investigate the accuracy of different SH diagnostic criteria in predicting the presence of complications....
journal_title:Clinical endocrinology
pub_type: 杂志文章,多中心研究
doi:10.1111/j.1365-2265.2010.03794.x
更新日期:2010-08-01 00:00:00
abstract:OBJECTIVE:Small, dense low-density lipoproteins (LDL) are a feature of the metabolic syndrome (MS) but their predictive role still remains to be established. We performed a 2-year follow-up study in 124 subjects with MS (63 +/- 6 years), as defined by the American Heart Association/National Heart, Lung and Blood Instit...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.2008.03407.x
更新日期:2009-06-01 00:00:00
abstract:OBJECTIVE:Women with a prior history of polycystic ovary syndrome (PCOS) have an increased risk of endometrial cancer (EC). AIM:To investigate whether the endometrium of women with PCOS possesses gene expression changes similar to those found in EC. DESIGN AND METHODS:Patients with EC, PCOS and control women unaffect...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/cen.13436
更新日期:2017-11-01 00:00:00