Abstract:
:We have previously reported that L-thyroxine treated patients may often have elevated serum T4 concentrations and yet show no clinical signs of hyperthyroidism. We found that such patients had normal serum T3 concentrations. The present study explored the relationship between serum T3 and T4 and dosage of L-thyroxine. Retrospective analysis of 99 patient records was performed. There was an increase of serum T4, serum T3 resin uptake (T3R), and T3 with increasing dose of L-thyroxine. The T3/T4 ratio decreased with increasing dose of L-thyroxine and with increasing T4. This phenomenon was analysed prospectively by starting 23 individuals on L-thyroxine and progressively incrementing the dose until either symptoms of hyperthyroidism developed or T4 levels exceeded the upper unit of the normal range. Once again, there was a progressive increase in serum T4, T3R, and T3 with increasing dose of L-thyroxine. At even the lowest dose of L-thyroxine (0.05 mg), there was a marked fall in T3/T4 ratio as compared to untreated individuals. The T3/T4 ratio fell further with increasing dose but with a fairly weak correlation. The decrease in T3/T4 ratio showed a much stronger correlation with serum T4. Of the 23 individuals, all exceeded the upper limit of the normal range of serum T4. No individual with elevated T4 developed clinical signs of hyperthyroidism unless serum T3 was also elevated beyond the normal range. Of eight individuals who reached elevated T3 levels, six demonstrated clinical signs of hyperthyroidism.(ABSTRACT TRUNCATED AT 250 WORDS)
journal_name
Clin Endocrinol (Oxf)journal_title
Clinical endocrinologyauthors
Rendell M,Salmon Ddoi
10.1111/j.1365-2265.1985.tb00159.xsubject
Has Abstractpub_date
1985-06-01 00:00:00pages
693-700issue
6eissn
0300-0664issn
1365-2265journal_volume
22pub_type
杂志文章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:OBJECTIVES:To report and explore potential reasons for undetectable or low-normal serum intact PTH levels in patients with surgically verified primary hyperparathyroidism with parathyroid adenomas, review the relevant literature, and offer suggestions for management of such patients occasionally encountered in clinical...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.2008.03225.x
更新日期:2008-09-01 00:00:00
abstract:OBJECTIVE:The risk of progression of subclinical hypothyroidism (SCH) to clinical dysfunction is one of the factors considered in the decision to treat this condition. This study evaluated the natural history of SCH in women with TSH ≤10 mIU/l. DESIGN:This is a prospective study. PATIENTS:Two hundred and fifty-two wo...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/cen.12939
更新日期:2016-06-01 00:00:00
abstract:OBJECTIVE:The autoimmune thyroid diseases, Graves disease and autoimmune hypothyroidism, result from a complex interaction between genetic, environmental and endogenous factors. The genetic loci conferring susceptibility remain unclear. A recent report has demonstrated an association between a microsatellite polymorphi...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1046/j.1365-2265.1997.1710996.x
更新日期:1997-05-01 00:00:00
abstract::delta 5 and delta 4 steroid levels were studied in the plasma and cyst fluid of women with gross cystic breast disease (GCBD). In luteal phase a significant increase in plasma levels (mean +/- SEM) of DHA (11.2 +/- 2.4 ng/ml), DHAS (1.45 +/- 0.6 micrograms/ml) and cortisol 277 +/- 15.7 ng/ml) was found; in follicular ...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.1987.tb02946.x
更新日期:1987-12-01 00:00:00
abstract::The best long-term results of transsphenoidal surgery appear to be in those patients who have unmeasurable serum cortisol levels in the immediate post-operative period. This appears to be due to isolated ACTH deficiency in the remaining normal pituitary gland. In our experience, however, long-term clinical remission m...
journal_title:Clinical endocrinology
pub_type: 杂志文章,评审
doi:10.1046/j.1365-2265.1996.614436.x
更新日期:1996-01-01 00:00:00
abstract:OBJECTIVE:Standard drug information resources recommend that l-thyroxine be taken half an hour before breakfast on an empty stomach, to prevent interference of its intestinal uptake by food or medication. We observed cases in which TSH levels improved markedly after changing the administration time of l-thyroxine to th...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.2006.02681.x
更新日期:2007-01-01 00:00:00
abstract::Phospholipase C activity was measured in human endometrium using an assay based on the release of total labelled water soluble products (inositol, inositol phosphates) from L-3-phosphatidyl-[2-3H] inositol. The enzyme was shown to be calcium dependent and to have an optimum pH of 5.5. There was no difference between p...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.1987.tb01157.x
更新日期:1987-09-01 00:00:00
abstract:OBJECTIVE:The optimal treatment regimen with thionamide drugs remains a matter for debate. We have investigated whether high doses of carbimazole, when compared with low doses, reduce relapse rates of Graves' disease. DESIGN:In an open label, randomized, prospective trial of treatment of Graves' disease we compared hi...
journal_title:Clinical endocrinology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1046/j.1365-2265.1998.00446.x
更新日期:1998-05-01 00:00:00
abstract::Total and free thyroid hormones were measured in a group of asymptomatic subjects with high circulating TSH concentrations and a previous history of radioiodine therapy. Subjects in the high TSH group all fell within the normal range for measurements of total T4, total T3 and T4/TBG ratio. Concentrations of free T4 or...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.1984.tb00100.x
更新日期:1984-05-01 00:00:00
abstract::We report six cases of autoimmune thyroid disease associated with chronic urticaria and briefly review the literature, including the histopathological nature of such lesions, and their aetiology and pathogenesis. In view of the prevalence of thyroid disease in patients with chronic urticaria, screening measurements of...
journal_title:Clinical endocrinology
pub_type: 信件
doi:10.1111/j.1365-2265.2007.02904.x
更新日期:2007-09-01 00:00:00
abstract::Human liver contains components in both cytosol and nucleosol which bind the synthetic testosterone derivative, mibolerone, with a high affinity, moderate capacity and a high specificity for androgens. Gel filtration chromatography shows two binding components, a high molecular weight component (mol wt. 250 000) prese...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.1985.tb01108.x
更新日期:1985-11-01 00:00:00
abstract::A radioimmunoassay (RIA) procedure was devised for the estimation of PRL in eluates of dried whole blood from filter paper. Levels of PRL were measured in newborn blood obtained during the first week of life from 530 infants of normal birthweight (greater than 2500 g) with normal T4 values, 114 infants of normal birth...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.1986.tb03253.x
更新日期:1986-01-01 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::It is believed that the study of gonadal function of the child should be regarded as a whole, beginning with the fetus and ending with the adolescent. Gonadal function depends upon 3 levels of activities: 1) central level (extra-hypothalamic, hypothalamic, and anterior pituitary); 2) an intermediate level (gonadal a...
journal_title:Clinical endocrinology
pub_type: 杂志文章,评审
doi:10.1111/j.1365-2265.1976.tb01985.x
更新日期:1976-09-01 00:00:00
abstract:OBJECTIVES:To investigate the risk of pregnancy complications in women with and without polycystic ovary syndrome after consideration of lifestyle factors. DESIGN:Prospective cohort. PATIENTS AND MEASUREMENTS:Participants (n = 5628) were apparently healthy nulliparous women with singleton pregnancies from the Screeni...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/cen.13954
更新日期:2019-06-01 00:00:00
abstract::The citric acid cycle, also known as the Krebs cycle, plays an integral role in cellular metabolism and aerobic respiration. Mutations in genes encoding the citric acid cycle enzymes succinate dehydrogenase, fumarate hydratase and malate dehydrogenase all predispose to hereditary tumour syndromes. The succinate dehydr...
journal_title:Clinical endocrinology
pub_type: 杂志文章,评审
doi:10.1111/cen.14289
更新日期:2020-11-01 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: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:INTRODUCTION:Previous studies investigating cardiovascular (CV) risk in obese women with polycystic ovary syndrome (PCOS) have been potentially confounded by not adequately accounting for body weight. OBJECTIVE:To assess if PCOS increases CV risk independently in young obese women by examining carotid intima-media wal...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/cen.12137
更新日期:2013-08-01 00:00:00
abstract:OBJECTIVE:We investigated interindividual differences in the shape, slope and setpoint of the pituitary-thyroid axis (PTA) in normal persons. Based on these physiological data we propose a novel bivariate concept for the interpretation of thyroid function tests which is less biased by interindividual differences in the...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.1993.tb01758.x
更新日期:1993-07-01 00:00:00
abstract:CONTEXT:Besides medullary thyroid carcinoma and other endocrinopathies, people with Multiple Endocrine Neoplasia Type 2 (MEN2) are at risk of gastrointestinal (GI) symptoms. OBJECTIVE:To investigate the impact of GI symptoms on the daily lives of patients with MEN2. DESIGN:An online survey was conducted among patient...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/cen.14366
更新日期:2020-11-10 00:00:00
abstract:OBJECTIVE:Congenital adrenal hyperplasia (CAH) due to 21-hydroxylase deficiency (21-OHD) is characterized by high androgen levels, ambiguous genitalia or premature pubarche, increased height velocity and skeletal maturation. Considering the possibility of changes in the IGF system components depending on the state of c...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.2004.02075.x
更新日期:2004-07-01 00:00:00
abstract:BACKGROUND AND OBJECTIVE:It has been well documented that treatment of chronic hepatitis B and C infection with interferon alpha (IFN-alpha) can lead to the induction of thyroid autoantibodies and hypothyroidism. Thyrotoxicosis, however, is less frequently observed and less well characterized. PATIENTS AND METHODS:We ...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1046/j.1365-2265.2002.01553.x
更新日期:2002-06-01 00:00:00
abstract:BACKGROUND:GH may be beneficial in treating patients with end-stage renal disease (ESRD). However, the efficacy and safety of GH could be compromised by the potential for accumulation in the circulation. OBJECTIVE:The objective was to investigate the pharmacokinetics and safety of GH treatment in ESRD patients. DESIG...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.2007.02962.x
更新日期:2007-11-01 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::Clinical observations and serial determinations of serum thyroglobulin (Tg) were made in five patients with acute haemorrhage into the thyroid gland. Fever, local pain and acceleration of erythrocyte sedimentation rate were minimal or were not observed, and serum T4 and T3 were normal. Although all patients showed an ...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.1984.tb00076.x
更新日期:1984-02-01 00:00:00
abstract:OBJECTIVE:Although autoantibody production is a key feature of autoimmunity, it is not known whether variation in autoantibody production and clearance pathways is involved in disease susceptibility. The Fc Gamma Receptor IIa (FcGRIIa) molecule is involved in the clearance of autoantibodies and a functional single nucl...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.2010.03780.x
更新日期:2010-07-01 00:00:00
abstract:BACKGROUND AND OBJECTIVE:Inhibin B, a heterodimeric glycoprotein of gonadal origin, is the most important circulating form of inhibin in human males and an inverse relationship between inhibin B and FSH plasma levels was been recently observed. Azoospermia represents the end-point of different kinds of testicular damag...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1046/j.1365-2265.1999.00659.x
更新日期:1999-06-01 00:00:00
abstract:OBJECTIVE:There are no consistent data on the prevalence and bone status of normocalcaemic hypoparathyroidism (NHYPO) as defined by normal adjusted calcium and low PTH level. Our aim was to determine the prevalence and the metabolic bone profile of NHYPO in older women, assessing its evolution over time. The second obj...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/cen.12732
更新日期:2015-06-01 00:00:00