Abstract:
OBJECTIVE:Genetic alterations in four oncogenes, namely RAS point mutations, RET rearrangements (RET/PTC), NTRK1 rearrangements (TRK) and BRAF point mutations have been identified in human papillary thyroid carcinomas (PTCs). These oncogenes act along the RET/PTC(TRK)-RAS-BRAF-MEK-MAPK kinase pathway, mediating a number of cellular fates including growth, proliferation and survival in thyroid cells. In this study, we analysed mutations of BRAF in a cohort of PTCs. METHODS:To screen for BRAF mutations, the genomic DNA of 105 PTCs were amplified by polymerase chain reaction (PCR) with primers flanking exon 15 and PCR products were directly sequenced with an automatic sequencer. These results, together with data from our previous studies on RAS, RET rearrangements and NTRK1 rearrangements in the same tumours, were compared to determine their individual significance in the pathogenesis of PTCs in Taiwan. RESULTS:BRAF mutations were detected in 49 of 105 (47%) tumour samples. All mutations involved a thymine-to-adenine transversion at nucleotide 1799 and were heterozygous. There was no overlap between papillary carcinomas harbouring RET rearrangements, NTRK1 rearrangements and BRAF mutations. In this cohort, correlation between BRAF mutations and various clinicopathological parameters in 101 papillary carcinomas did not reveal any association with age at diagnosis, sex, tumour size, histological variants of PTC, multicentricity, cervical lymph node metastases, extrathyroidal invasion, distant metastases and clinical stage. CONCLUSIONS:BRAFV600E mutation is the most prevalent oncogene in PTCs in Taiwan. Our data did not suggest that BRAFV600E mutation could be a potentially useful marker of prognosis in patients with papillary carcinomas in the population studied.
journal_name
Clin Endocrinol (Oxf)journal_title
Clinical endocrinologyauthors
Liu RT,Chen YJ,Chou FF,Li CL,Wu WL,Tsai PC,Huang CC,Cheng JTdoi
10.1111/j.1365-2265.2005.02367.xkeywords:
subject
Has Abstractpub_date
2005-10-01 00:00:00pages
461-6issue
4eissn
0300-0664issn
1365-2265pii
CEN2367journal_volume
63pub_type
杂志文章abstract:OBJECTIVE:Conflicting data have been reported previously on the effects of oestrogen replacement therapy on glucose tolerance, and the effects on glycosylated haemoglobin GHbA(1c) have been studied only among diabetics. The objective of this study was to evaluate the effects on glucose and insulin metabolism among nond...
journal_title:Clinical endocrinology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1046/j.1365-2265.2001.01208.x
更新日期:2001-02-01 00:00:00
abstract:OBJECTIVE:Use of the antithyroid drugs (ATDs) thiamazole (MMI) and propylthiouracil (PTU) is associated with a high frequency of side effects. When patients experience side effects with one (the 1st) ATD, it is usually discontinued and another is administered (the 2nd ATD). We investigated side effects associated with ...
journal_title:Clinical endocrinology
pub_type: 杂志文章,随机对照试验
doi:10.1111/j.1365-2265.2012.04365.x
更新日期:2012-08-01 00:00:00
abstract:OBJECTIVE:The objective of this study was to determine the levels of thrombospondin-1 (TSP-1), transforming growth factor-β1 (TGF-β1) and nuclear factor kappaβ (NF-κβ) in polycystic ovarian syndrome (PCOS) patients with and without insulin resistance and after treatment with cyproterone acetate/ethinyloestradiol with o...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/cen.12951
更新日期:2015-12-01 00:00:00
abstract::Growth hormone release-inhibiting hormone (GHR-IH) was administered to five patients with abnormal pituitary-adrenal function. There was immediate suppression by about 50% of ACTH levels in two patients who had undergone bilateral adrenalectomy because of Cushing's disease; one of them had Nelson's syndrome. Bromocryp...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.1976.tb02831.x
更新日期:1976-03-01 00:00:00
abstract:OBJECTIVE:The aim of this study was to address the effect of endurance training on monocyte glucocorticoid sensitivity in vitro. METHODS:For this purpose, in vitro dexamethasone inhibition of lipopolysaccharide (LPS)-induced interleukin-6 (IL-6) secretion in cultures of peripheral monocytes was compared in 6 untrained...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1046/j.1365-2265.1999.00878.x
更新日期:1999-12-01 00:00:00
abstract:OBJECTIVE:To assess the effect of nutritional supplementation on growth and puberty in constitutionally delayed children. PATIENTS:One hundred and two boys, 13.6-15.5 years of age, who were referred because of short stature and delayed puberty. METHODS:The boys were randomly allocated to one of the following treatmen...
journal_title:Clinical endocrinology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1111/j.1365-2265.2004.02034.x
更新日期:2004-06-01 00:00:00
abstract:BACKGROUND AND OBJECTIVE:Clinical acromegaly is characterized by dysregulation of somatotroph GH secretion in the presence of high circulating serum IGF-I levels. Physiologically, IGF-I exerts a negative feedback on GH secretion at both the hypothalamic and the pituitary levels. We have previously shown that the 943 an...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.1995.tb01858.x
更新日期:1995-02-01 00:00:00
abstract:BACKGROUND:The low dose dexamethasone suppression test (DST) has been used to detect subtle variations in the feedback suppression of the hypothalamic-pituitary-adrenal axis, which may contribute to the pathogenesis of several diseases including depression, the metabolic syndrome and coronary artery disease. Little is ...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1046/j.1365-2265.1998.00549.x
更新日期:1998-09-01 00:00:00
abstract:OBJECTIVE:To determine serum concentrations, intra-individual variability and impact of age-related co-morbidities on serum testosterone (T), dihydrotestosterone (DHT), estradiol (E(2)) and estrone (E(1)) in older men. DESIGN:Observational, repeated measures study. PARTICIPANTS:Men (n = 325) with 40 years and older s...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.2012.04432.x
更新日期:2012-11-01 00:00:00
abstract:OBJECTIVE:Mutations in the melanocortin-4 receptor gene (MC4R) are the most common monogenic form of human obesity. However, the contribution of MC4R mutations to obesity in Chinese has not been investigated. We studied the frequency of MC4R mutations in an obese southern Chinese population and the functional consequen...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.2006.02573.x
更新日期:2006-08-01 00:00:00
abstract::The ratios of reverse triiodothyronine (rT3) to triiodothyronine (T3) concentrations were similar (0.89 +/- 0.09) in twenty-three autonomous thyroid nodules (fourteen decompensated, nine compensated) and paranodular tissues (0.82 +/- 0.08), whereas the serum ratio was significantly lower (0.098 +/- 0.014). This is com...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.1977.tb01310.x
更新日期:1977-08-01 00:00:00
abstract:OBJECTIVE:The purpose of the study was to evaluate plasma inhibin as a marker of hydatidiform mole and to compare the results with intact human chorionic gonadotrophin (hCG) and its free beta-subunit. DESIGN:Serial determinations of the plasma concentrations of inhibin, intact human chorionic gonadotrophin and its fre...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.1994.tb02524.x
更新日期:1994-08-01 00:00:00
abstract:OBJECTIVE:Reduction of plasma free fatty acids leads to enhanced GH response after stimulation by GH-releasing hormone (GHRH). We studied the clinical usefulness of combined administration of acipimox and GHRH for the diagnosis of GH deficiency. DESIGN:We evaluated 35 patients [mean age 53.0 years; mean body mass inde...
journal_title:Clinical endocrinology
pub_type: 临床试验,杂志文章
doi:10.1046/j.1365-2265.2003.01684.x
更新日期:2003-02-01 00:00:00
abstract::Eleven women with secondary amenorrhoea and hyperprolactinaemia were treated with lisuride, a new semisynthetic ergot derivative. Acute administration of lisuride (100 microgram orally) significantly suppressed serum prolactin (PRL) levels in nine out of eleven subjects. In these nine patients, prolonged treatment wit...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.1978.tb01506.x
更新日期:1978-12-01 00:00:00
abstract::Twenty women, who had been randomly selected from women with subclinical hypothyroidism identified in a population study were treated with L-thyroxine and placebo in a double-blind cross-over design during 2 x 6 months. Three women did not complete the study, one because she moved to another part of the country, and t...
journal_title:Clinical endocrinology
pub_type: 临床试验,杂志文章
doi:10.1111/j.1365-2265.1988.tb00250.x
更新日期:1988-07-01 00:00:00
abstract::The paradoxical GH response to TRH observed in certain adolescents with constitutional tall stature is associated with a 60% fall in plasma levels of somatostatin. Conversely, those tall subjects who do not show a GH increase after TRH, or during a saline control infusion maintain steady levels of somatostatin in plas...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.1984.tb03232.x
更新日期:1984-10-01 00:00:00
abstract:OBJECTIVE:The disruption between the brain and the spinal cord leads to a decentralized sympathetic nervous system in people with chronic, cervical spinal cord lesions. These tetraplegic subjects are prone to disorders of energy metabolism and osteoporosis, and they experience alterations in their body composition with...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.2005.02204.x
更新日期:2005-02-01 00:00:00
abstract:OBJECTIVE:Our clinical practice has been to offer treatment with cyclical disodium etidronate and high dose calcium supplements (1500-1600 mg/day) to all female patients with osteoporosis who are unable or unwilling to take hormone replacement therapy (HRT), and male osteoporotics. In a retrospective study we compared ...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.1994.tb02537.x
更新日期:1994-08-01 00:00:00
abstract::Thirty-three samples of follicular fluid (FF) were collected from 14 patients with the polycystic ovary (PCO) syndrome and matched for FF-volume with small follicles collected from subjects with normal ovaries. The median (range) FF concentration of insulin-like growth factor 1 (IGF1) in the group with PCO, 0.42 (0.13...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.1990.tb00879.x
更新日期:1990-04-01 00:00:00
abstract:INTRODUCTION:Guidelines do not currently recommend routine systematic hormonal screening for pheochromocytoma (PHEO) in all/normotensive patients with neurofibromatosis type 1 (NF1), in contrast to other PHEO-predisposing genetic syndromes such as Von Hippel-Lindau syndrome and multiple endocrine neoplasia type 2. OBJ...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/cen.13265
更新日期:2017-03-01 00:00:00
abstract:CONTEXT AND OBJECTIVE:Nonfunctioning pituitary adenomas (NFPAs) are the most common subtype of pituitary tumour. Hypopituitarism is observed in NFPAs due to tumour- or treatment-related factors and may increase mortality risk. Here, we analysed the associations of hypopituitarism, hormone replacement and mortality in a...
journal_title:Clinical endocrinology
pub_type: 杂志文章,多中心研究
doi:10.1111/cen.13141
更新日期:2016-11-01 00:00:00
abstract:BACKGROUND:Mutations in PROP1, HESX1 and LHX3 are associated with combined pituitary hormone deficiency (CPHD) and orthotopic posterior pituitary lobe (OPP). OBJECTIVE:To identify mutations in PROP1, HESX1 and LHX3 in a large cohort of patients with CPHD and OPP (35 Brazilian, two Argentinian). DESIGN AND METHODS:We ...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/cen.13430
更新日期:2017-12-01 00:00:00
abstract:OBJECTIVE:Pituitary responsiveness to GnRH varies throughout the normal menstrual cycle. We have investigated whether there are differences in the ovarian mechanisms which regulate gonadotrophin secretion between the follicular and the luteal phase of the cycle. DESIGN:Normally ovulating women were studied during the ...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1046/j.1365-2265.1997.3461141.x
更新日期:1997-12-01 00:00:00
abstract:OBJECTIVE:This study was designed to investigate whether an elevated serum antithyroglobulin antibody (TgAb) reflects cancer recurrence in thyroglobulin (Tg)-undetectable patients with differentiated thyroid carcinoma (DTC) after thyroid ablation. DESIGN:We measured serum TgAb level and evaluated the disease status in...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1046/j.1365-2265.2002.01592.x
更新日期:2002-08-01 00:00:00
abstract:OBJECTIVES:Localization of ectopic ACTH-secreting tumours causing Cushing syndrome (ECS) is essential for clinical management, yet often difficult. [68 Ga]-DOTATATE PET/CT ([68 Ga]-DOTA-(Tyr3 )-octreotate)] is an FDA-approved high-resolution diagnostic tool for imaging neuroendocrine tumours. Data on the clinical utili...
journal_title:Clinical endocrinology
pub_type: 杂志文章,多中心研究
doi:10.1111/cen.14008
更新日期:2019-08-01 00:00:00
abstract::To explore the mechanism for the hypogonadism associated with prolactin hypersecretion in men we examined luteinizing hormone (LH) secretory profiles in four hyperprolactinaemic men before and during treatment with bromocriptine. Pretreatment serum prolactin levels were increased 4-100 fold and serum testosterone leve...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.1984.tb03467.x
更新日期:1984-09-01 00:00:00
abstract:OBJECTIVE:To determine the interest of Chromogranin A (CgA) determination for diagnosis and follow-up in patients with gastroenteropancreatic endocrine tumours (GEP-ET) and multiple endocrine neoplasia type 1 (MEN-1). PATIENTS AND METHODS:CgA levels were measured with an immunoradiometric assay in 124 sporadic GEP-ET,...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.2004.02030.x
更新日期:2004-05-01 00:00:00
abstract:OBJECTIVES:The aim of this study was to examine (1) the diurnal variation in SHBG and (2) the inter-relationships of insulin, IGF-I, SHBG and IGFBP-1 over 24 hours in 10 women with anovulatory PCOS and compare them with weight-matched ovulatory controls. PATIENTS AND METHODS:The two groups comprised 10 anovulatory wom...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.1995.tb01910.x
更新日期:1995-08-01 00:00:00
abstract::The effect of clomiphene citrate on the occurrence and timing of the endogenous LH surge in superovulated cycles is unclear. To study further this event, five normally ovulating women were treated with clomiphene citrate 100 mg per day in two different cycles, that is, for 5 days in one cycle (days 2 to 6, CC-5) and f...
journal_title:Clinical endocrinology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1111/j.1365-2265.1988.tb03700.x
更新日期:1988-11-01 00:00:00
abstract:BACKGROUND AND OBJECTIVE:Previous studies suggesting effects of metyrapone on extra-adrenal corticosteroid metabolism have involved significant alterations in plasma cortisol. We have therefore studied effects of metyrapone on urinary excretion of steroids in a group of patients treated concurrently with hydrocortisone...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.1995.tb02930.x
更新日期:1995-11-01 00:00:00