Abstract:
RATIONALE:Low serum testosterone is commonly observed in men with type 2 diabetes (T2DM), but the neuroendocrine pathophysiology remains to be elucidated. OBJECTIVES:The hypothalamic neuropeptide kisspeptin integrates metabolic signals with the reproductive axis in animal models. We hypothesized that administration of exogenous kisspeptin-10 will restore luteinizing hormone (LH) and testosterone secretion in hypotestosteronaemic men with T2DM. PARTICIPANTS:Five hypotestosteronaemic men with T2DM (age 33·6 ± 3 years, BMI 40·6 ± 6·3, total testosterone 8·5 ± 1·0 nmol/l, LH 4·7 ± 0·7 IU/l, HbA1c 7·4±2%, duration of diabetes <5 years) and seven age-matched healthy men. EXPERIMENT 1: Mean LH increased in response to intravenous administration of kisspeptin-10 (0·3 mcg/kg bolus) both in healthy men (5·5 ± 0·8 to 13·9 ± 1·7 IU/l P < 0·001) and in men with T2DM (4·7 ± 0·7 to 10·7 ± 1·2 IU/l P = 0·02) with comparable ΔLH (P = 0·18). EXPERIMENT 2: Baseline 10-min serum sampling for LH and hourly testosterone measurements were performed in four T2DM men over 12 h. An intravenous infusion of kisspeptin-10 (4 mcg/kg/h) was administered for 11 h, 5 days later. There were increases in LH (3·9 ± 0·1 IU/l to 20·7 ± 1·1 IU/l P = 0·03) and testosterone (8·5 ± 1·0 to 11·4 ± 0·9 nmol/l, P = 0·002). LH pulse frequency increased from 0·6 ± 0·1 to 0·9 ± 0 pulses/h (P = 0·05) and pulsatile component of LH secretion from 32·1 ± 8·0 IU/l to 140·2 ± 23·0 IU/l (P = 0·007). CONCLUSIONS:Kisspeptin-10 administration increased LH pulse frequency and LH secretion in hypotestosteronaemic men with T2DM in this proof-of-concept study, with associated increases in serum testosterone. These data suggest a potential novel therapeutic role for kisspeptin agonists in enhancing endogenous testosterone secretion in men with T2DM and central hypogonadism.
journal_name
Clin Endocrinol (Oxf)journal_title
Clinical endocrinologyauthors
George JT,Veldhuis JD,Tena-Sempere M,Millar RP,Anderson RAdoi
10.1111/cen.12103subject
Has Abstractpub_date
2013-07-01 00:00:00pages
100-4issue
1eissn
0300-0664issn
1365-2265journal_volume
79pub_type
临床试验,杂志文章abstract:OBJECTIVE:Various studies have demonstrated coexistence of ovarian and adrenal hyperandrogenism in women. This study was designed to determine whether testosterone can increase the response of the adrenal gland to stimulation by adrenocorticotrophin (ACTH). DESIGN:Non-randomized intervention in a university teaching h...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.1994.tb03010.x
更新日期:1994-05-01 00:00:00
abstract:OBJECTIVE:To compare effectiveness and tolerability of quinagolide (CV 205-502) and cabergoline (CAB) treatments in 39 patients with prolactinoma. STUDY DESIGN:All 39 patients were treated first with quinagolide for 12 months and then with cabergoline for 12 months. A wash-out period was performed in all patients afte...
journal_title:Clinical endocrinology
pub_type: 临床试验,杂志文章
doi:10.1046/j.1365-2265.2000.01016.x
更新日期:2000-07-01 00:00:00
abstract:CONTEXT:The substitution of liothyronine (L-T3) for levothyroxine (L-T4) is commonly employed during thyroid hormone (TH) withdrawal in preparation for diagnostic and therapeutic interventions on thyroid cancer patients. Presently, only limited data are available on the L-T3 for L-T4 therapeutic substitution. Objective...
journal_title:Clinical endocrinology
pub_type: 杂志文章,随机对照试验
doi:10.1111/j.1365-2265.2009.03700.x
更新日期:2010-05-01 00:00:00
abstract::We have studied the inositol phospholipid turnover response to thyrotrophin-releasing hormone (TRH) gonadotrophin-releasing hormone (GnRH) and arginine vasopressin (AVP) in five corticotroph and six somatotroph pituitary adenomas. GnRH (100 nM) increased inositol phospholipid turnover in five of five somatotroph adeno...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.1990.tb00467.x
更新日期:1990-07-01 00:00:00
abstract::The human population which lives and works in polar environments has been increasing steadily over the last 15 years. Very little is known about how these residents adjust to their environment. Cold adaptation in man is a poorly understood phenomenon. Euthermic mammals maintain body temperature during cold exposure vi...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.1986.tb03595.x
更新日期:1986-07-01 00:00:00
abstract:BACKGROUND AND OBJECTIVE:In polycystic ovary syndrome (PCOS) inappropriate gonadotrophin secretion is characterized by increased pulse frequency and amplitude, elevated 24-h mean serum concentrations, and greater responses to GnRH. While the mechanism(s) responsible for this increased release of LH are not well underst...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.2004.01945.x
更新日期:2004-01-01 00:00:00
abstract:OBJECTIVE:Nonuniformity in suppression of spermatogenesis induced by various hormones or hormone combinations has impeded the development of an effective hormonal male contraceptive. The basis for this heterogeneity in response remained unresolved to date; however, the presence of ethnic differences points to an involv...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1046/j.1365-2265.2002.01652.x
更新日期:2002-11-01 00:00:00
abstract:OBJECTIVE:We examined the individual pharmacological effects of the addition of rosiglitazone and metformin to glimepiride on inflammatory markers and adipokines in patients with type 2 diabetes mellitus. We analysed the relationships between these variables, the measurements of insulin sensitivity and beta-cell functi...
journal_title:Clinical endocrinology
pub_type: 杂志文章,随机对照试验
doi:10.1111/j.1365-2265.2006.02723.x
更新日期:2007-02-01 00:00:00
abstract:OBJECTIVE:As only sparse data are available, we aimed to investigate whether needs for activated vitamin D and calcium supplements change in women with hypoparathyroidism during pregnancy and lactation and risk of pregnancy-related complications. DESIGN:Retrospective review of medical records. PATIENTS:Twelve Danish ...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/cen.14212
更新日期:2020-09-01 00:00:00
abstract:UNLABELLED:A diagnosis of bilateral pheochromocytoma warrants exclusion of hereditary pheochromocytoma. OBJECTIVE:To describe the first case of a bilateral pheochromocytoma associated with V804M mutation in the RET proto-oncogene. PATIENTS:The index case was a 54-year-old man with bilateral adrenal masses discovered ...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.2007.02830.x
更新日期:2007-07-01 00:00:00
abstract:OBJECTIVE:To elucidate the interaction between insulin and dehydroepi-androsterone (DHEA) concentrations, we evaluated serum DHEA and DHEA-sulphate (DHEA-S) levels in diabetic patients with hyperinsulinaemia. PATIENTS AND DESIGN:Twenty-four subjects with non-insulin dependent diabetes mellitus, 12 hyperinsulinaemic su...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1046/j.1365-2265.1998.00533.x
更新日期:1998-09-01 00:00:00
abstract::Malignant insulinomas are very rare endocrine tumours with a variable clinical course. We describe a 51-year-old man who had two large insulinomas resected from the body of the pancreas and 19 years later, having again become symptomatic, was found to have hepatic metastases. Medical treatment with diazoxide and octre...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1046/j.1365-2265.2002.01506.x
更新日期:2002-04-01 00:00:00
abstract:PURPOSE:We aim to evaluate the association of PCOS with eating, sleeping and sexual function disorders. METHODS:A comprehensive search including MEDLINE, Embase, Cochrane Central Register of Controlled Trials, Cochrane Database of Systematic Reviews, and Scopus through 01 August 2018 was conducted for studies reportin...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/cen.14153
更新日期:2020-04-01 00:00:00
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:BACKGROUND:Pregnancy and lactation comprise a critical window spanning all seasons during which maternal vitamin D status potentially may influence the long-term health of the newborn. Women typically receive calcium/vitamin D supplementation through antenatal vitamins, but there has been limited serial evaluation of m...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/cen.12989
更新日期:2016-05-01 00:00:00
abstract:OBJECTIVE:The metabolic syndrome has been associated with increased mortality in some Caucasian populations, but data in Asian populations are not available. We present data describing the association of the metabolic syndrome with mortality. METHODS:The impact of the US National Cholesterol Education Program Adult Tr...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.2007.02798.x
更新日期:2007-05-01 00:00:00
abstract:OBJECTIVE:The prevalence of clinically silent corticotroph macroadenomas is unknown. Our aim was to determine the prevalence of clinically silent corticotroph macroadenomas among all pituitary macroadenomas. DESIGN:Patients scheduled to have transsphenoidal surgery for any sellar mass were prospectively evaluated clin...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/cen.13146
更新日期:2016-12-01 00:00:00
abstract::Plasma glucagon response to an arginine infusion was studied in children and adolescents belonging to the following groups: (I) twenty-two controls; (II) six subjects with delayed insulin peak during oral GTT; (III) ten diabetics on diet and/or oral therapy; (IV) six newly diagnosed uncompensated diabetics; and (V) ei...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.1975.tb01558.x
更新日期:1975-09-01 00:00:00
abstract:OBJECTIVE:Cadmium (Cd) has been shown to impair pubertal development in experimental animals. However, no data are available for male adolescents with increased urinary cadmium levels. DESIGN:The aim of this cross-sectional study was to evaluate pubertal onset and pituitary-gonadal axis hormones in male adolescents wi...
journal_title:Clinical endocrinology
pub_type: 杂志文章,多中心研究
doi:10.1111/cen.12704
更新日期:2015-09-01 00:00:00
abstract::We studied variables known to change with thyroid hormone status in 18 patients with subclinical hypothyroidism before and during treatment with thyroxine in a dose sufficient to restore the plasma TSH response to TRH to normal. There was an associated increase in both plasma total T4 and free T4 within the normal ran...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.1985.tb01068.x
更新日期:1985-01-01 00:00:00
abstract:OBJECTIVE:Three independent genome-wide association studies in white populations have reported that single nucleotide polymorphisms (SNPs) in the KIAA0350 gene are associated with susceptibility to type 1 diabetes (T1D). The gene product of KIAA0350 is predicted to be a sugar binding C-type lectin. In the present study...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.2008.03437.x
更新日期:2009-07-01 00:00:00
abstract::A review of the genetics of male undermasculinization must encompass a description of the embryology of the genital system. The dimorphism of sex development consequent upon the formation of a testis and the subsequent secretion of hormones to impose a male phenotype is highlighted. Thus, an understanding of the cause...
journal_title:Clinical endocrinology
pub_type: 杂志文章,评审
doi:10.1046/j.1365-2265.2002.01430.x
更新日期:2002-01-01 00:00:00
abstract::A 25-year-old primigravid woman presented with Cushing's syndrome at 23 weeks gestation; serum cortisol was 1090 nmol/l at 0900 h, 1230 nmol/l at 2200 h; basal urinary free cortisol excretion was 3680 nmol/24 h, and 8830 nmol/24 h after dexamethasone 8 mg daily for 48 hours; plasma ACTH was < 1.1 pmol/l. CT scan of th...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.1993.tb02380.x
更新日期:1993-09-01 00:00:00
abstract:OBJECTIVE:To determine if patients with untreated Cushing's disease have higher serum insulin-like growth factor-1 (IGF-1) compared to matched controls, and if IGF-1 decreases following remission of Cushing's disease. DESIGN:Retrospective case-control study matching Cushing's disease cases to control patients for aden...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/cen.13974
更新日期:2019-07-01 00:00:00
abstract::The pathogenetic mechanisms underlying pituitary tumorigenesis are largely unknown. Previous reports have suggested that aggressive pituitary adenomas and/or carcinomas may be associated with genetic alterations that are distinct from those responsible for the more common and less aggressive pituitary adenomas. Here, ...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1046/j.1365-2265.2001.01322.x
更新日期:2001-10-01 00:00:00
abstract:OBJECTIVE:The protein-tyrosine-phosphate nonreceptor 22 gene (PTPN22) has recently been identified as a susceptibility locus for a number of autoimmune diseases including Graves' disease (GD). PTPN21 is another member of the PTPN family and its gene PTPN21 maps to the first reported region of genetic linkage to GD, GD-...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.2006.02608.x
更新日期:2006-09-01 00:00:00
abstract::The antigenicity of HCG was tested in twenty-three young healthy men receiving two different HCG preparations (A and B). Each subject received 5000 i.u. HCG intramuscularly daily for three consecutive days, followed by another course, 3 weeks later, of 5000 i.u. HCG injections daily for 3 days. Two of the fifteen subj...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.1982.tb02762.x
更新日期:1982-05-01 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:BACKGROUND/OBJECTIVES:Acylation-stimulating protein (ASP) is an adipose tissue-derived hormone, which stimulates glucose and free fatty acid (FFA) uptake into adipocytes. Changes in ASP metabolism are associated with alterations in lipid metabolism. As postnatal catch-up growth has been associated with dyslipidaemia in...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.2010.03771.x
更新日期:2010-06-01 00:00:00
abstract:OBJECTIVE:Results from the published studies on the association of adiponectin gene (ADIPOQ) polymorphisms with blood lipids and blood pressure are conflicting. We investigated the association of three ADIPOQ polymorphisms, +45 T > G (rs2241766), +276 G > T (rs1501299) and -11377 C > G (rs266729), with these traits in ...
journal_title:Clinical endocrinology
pub_type: 杂志文章,meta分析
doi:10.1111/j.1365-2265.2010.03902.x
更新日期:2011-02-01 00:00:00