Abstract:
OBJECTIVE:The level of growth hormone (GH), growth hormone secretogogue (GHS) and GHS receptor (GHSR) messenger ribonucleic acid (mRNA) expression has been reported as being higher in GH-producing pituitary adenomas than in other types of pituitary adenomas. Recently, ghrelin, an endogenous ligand specific for GHSR, was isolated. Therefore, we attempted to clarify whether ghrelin mRNA is expressed in various types of human pituitary adenoma by competitive reverse transcription-polymerase chain reaction (RT-PCR). We also examined the relationship between the levels of ghrelin or GHSR mRNA and hormonal and tumour characteristics in patients with pituitary adenomas. PATIENTS:Pituitary adenoma tissue was obtained at surgery from 13 patients with acromegaly, 4 with prolactinomas, 5 with gonadotrophin (Gn)-producing adenomas, 4 with non-functioning adenomas, 2 with ACTH-producing adenomas and 2 with TSH-producing adenomas. METHODS:The expression levels of human ghrelin mRNA and GHSR mRNA were quantified using a competitive RT-PCR method. RESULTS:Ghrelin mRNA was detected in all pituitary adenoma tissues examined, with the highest mean level detected in non-functioning adenomas, a moderate level in GH-producing adenomas and Gn-producing adenomas, and the lowest level in prolactinomas. The level of ghrelin mRNA expression in GH-producing adenomas correlated negatively with the size of the adenoma (n = 13) (r = - 0.756, P = 0.0028). Furthermore, the mean level of ghrelin mRNA expression in high-grade (III and IV of Hardy classification) GH-producing adenomas was significantly lower than that in low-grade (I and II) GH-producing adenomas (P = 0.0016). GHSR mRNA was also detected in all pituitary adenomas with the highest mean level in GH-producing adenomas, a moderate level in nonfunctioning adenoma, and the lowest level in prolactinoma and Gn-producing adenomas. CONCLUSIONS:Ghrelin mRNA, in addition to GHSR mRNA, is expressed in various types of pituitary adenoma with different levels of expression in each type. Our findings suggest that ghrelin produced in pituitary adenoma may play some role in the mechanism underlying the development of adenoma cells through autocrine and/or paracrine pathways.
journal_name
Clin Endocrinol (Oxf)journal_title
Clinical endocrinologyauthors
Kim K,Arai K,Sanno N,Osamura RY,Teramoto A,Shibasaki Tdoi
10.1046/j.1365-2265.2001.01286.xkeywords:
subject
Has Abstractpub_date
2001-06-01 00:00:00pages
759-68issue
6eissn
0300-0664issn
1365-2265pii
cen1286journal_volume
54pub_type
杂志文章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:CONTEXT:Disturbances in thyroid function have been described in small-for-gestational age (SGA) children but the influence of prematurity is unclear. In addition, the effect of GH treatment on thyroid function has not been studied in short SGA children. OBJECTIVES:To determine whether short SGA children have higher TS...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.2008.03195.x
更新日期:2008-08-01 00:00:00
abstract:OBJECTIVES:The aim of the study was to review our long-term use of subcutaneous oestradiol (E2) implant therapy for the treatment of climacteric symptoms in post-menopausal women. On the grounds that the aim is to restore premenopausal serum E2 levels, our declared clinical policy is not to repeat implants even in the ...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.1995.tb02660.x
更新日期:1995-05-01 00:00:00
abstract::Seckel syndrome is an autosomal-recessive disorder with a frequency of less than 1/10 000 births in which there are multiple malformations including severe short stature. We report on a patient with Seckel syndrome with a current body height of -7.5 SDS. Laboratory investigations at the age of 19 months revealed high ...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1046/j.1365-2265.2002.01590.x
更新日期:2002-08-01 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:OBJECTIVE:The goal of our study was to determine the rate of neoplasms in patients with other pituitary adenomas (non-functioning and prolactinomas) in comparison with acromegaly which is known to favour the development of neoplasia. DESIGN AND PATIENTS:We reviewed clinical records for 220 patients with acromegaly, 15...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1046/j.1365-2265.1998.00536.x
更新日期:1998-10-01 00:00:00
abstract:AIMS/HYPOTHESIS:Individuals with impaired fasting glucose (IFG) are at increased risk of developing diabetes over the subsequent decade. However, there is uncertainty as to the mechanisms contributing to the development of diabetes. We sought to quantitate insulin secretion and action across the prediabetic range of fa...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.2011.04159.x
更新日期:2012-02-01 00:00:00
abstract::A controlled therapeutic trial on seventy-four 70-year-old women was carried out with the purpose of finding the optimal treatment for post menopausal osteoporosis. The bone mineral content (BMC) was measured by I-photonabsorptiometry at two sites in the distal part of the forearms, where the trabecular/cortical ratio...
journal_title:Clinical endocrinology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1111/j.1365-2265.1982.tb02769.x
更新日期:1982-05-01 00:00:00
abstract:CONTEXT:Data on quantification and regulation of adipsin in human cerebrospinal fluid (CSF) are sparse, and the physiological role of adipsin as an adipokine crossing the blood-brain barrier (BBB) is uncertain. OBJECTIVES:This study quantified adipsin concentrations in paired serum and CSF samples of patients undergoi...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/cen.12856
更新日期:2016-02-01 00:00:00
abstract:OBJECTIVE:Uncontrolled hypothyroidism has been associated with an increased risk of adverse pregnancy outcomes. We aimed to assess the effectiveness of increasing levothyroxine (LT4) dose on reducing the risk of adverse outcomes for pregnant women with TSH level greater than the recommended 1st trimester limit. DESIGN...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/cen.13168
更新日期:2017-01-01 00:00:00
abstract:OBJECTIVES:The Asp727Glu polymorphism in the TSH receptor (TSHR) gene is associated with serum TSH levels. However, the proportion of genetic variation accounted for by this polymorphism is unknown. In this study, we (1) examined the association of the Asp727Glu polymorphism with thyroid size, serum levels of TSH, thyr...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.2007.02820.x
更新日期:2007-06-01 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: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 numbe...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.2005.02367.x
更新日期:2005-10-01 00:00:00
abstract:OBJECTIVE:Vasopressin (AVP) is reported to be an important factor for regulating cortisol secretion in patients with Cushing's syndrome due to ACTH-independent macronodular adrenocortical hyperplasia (AIMAH). Recently, there have been several case reports of subclinical Cushing's syndrome due to AIMAH, in which the pat...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1046/j.1365-2265.2003.01963.x
更新日期:2004-02-01 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::This study deals with serum prolactin concentrations during various conditions in the early puerperium in an attempt to investigate some characteristics of the mechanisms responsible for the regulation of the lactotropes. In nursing, in non-nursing, non-medicated and in non-nursing, bromocriptine-treated women prolact...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.1981.tb00650.x
更新日期:1981-08-01 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:CONTEXT:Glucokinase (GCK) phosphorylates and thereby "traps" glucose in cells, thus serving as a gatekeeper for cellular glucose metabolism, particularly in hepatocytes and pancreatic beta cells. In humans, activating GCK mutations cause familial hyperinsulinaemic hypoglycaemia (GCK-HH), leading to keen interest in the...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/cen.12517
更新日期:2014-12-01 00:00:00
abstract:OBJECTIVE:In order to investigate whether somatotrophs are the target of antipituitary antibodies (APA) in adult patients with growth hormone deficiency (GHD), we studied the sera of 37 APA positive patients. PATIENTS:Patients were grouped as follows: nine patients with APA at high titre (> 1 : 8) affected by apparent...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.2005.02296.x
更新日期:2005-07-01 00:00:00
abstract:OBJECTIVE:To study the relationship between maternal thyrotrophin (TSH) and breech presentation at term. DESIGN:Combined data sets of two prospective studies to obtain adequate epidemiological power. PATIENTS:One thousand and fifty-eight healthy pregnant women (58 breech, 1000 cephalic) and 131 women who presented in...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.2010.03846.x
更新日期:2010-11-01 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:OBJECTIVE:The aim of this study was to assess the role of pulsed tissue Doppler (TD) to identify left (LV) and right ventricular (RV) myocardial regional involvement in acromegaly. PATIENTS AND MEASUREMENTS:Thirty active acromegaly patients, free of diabetes mellitus, thyroid dysfunction, valvular and coronary heart d...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.2006.02475.x
更新日期:2006-04-01 00:00:00
abstract:OBJECTIVE:The aim of this study was to compare the metabolic effects of GH administered subcutaneously either once or twice daily. The actions of GH might depend upon a pulsatile pattern of serum GH. Pulsatile and continuous intravenous delivery of GH, however, induce similar short-term metabolic effects in GH deficien...
journal_title:Clinical endocrinology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1111/j.1365-2265.1994.tb02554.x
更新日期:1994-09-01 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:The diagnosis of growth hormone deficiency (GHD) in adults is established through growth hormone (GH) stimulation testing, which is often complex, expensive, time-consuming and may be associated with adverse side effects. The decision to perform GH provocative testing is influenced by clinical findings, medic...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.2010.03935.x
更新日期:2011-03-01 00:00:00
abstract:OBJECTIVE:There has been much debate concerning the relative contribution of insulin resistance to the development of polycystic ovaries (PCO). We therefore aimed to assess ovarian morphology and insulin/androgen status in females with the hepatic glycogen storage diseases types Ia (GSD-Ia) and III (GSD-III), disorders...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.1995.tb02686.x
更新日期:1995-06-01 00:00:00
abstract:CONTEXT:Two main forms of amiodarone-induced thyrotoxicosis (AIT) exist. Type 1 AIT is a form of iodine-induced hyperthyroidism. Its management is complex and includes thionamides, potassium perchlorate and, occasionally, thyroidectomy. Type 2 AIT is a destructive thyroiditis, responds to glucocorticoids, and usually d...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.2007.02920.x
更新日期:2007-10-01 00:00:00
abstract:INTRODUCTION:The present clinical investigation uses a high-precision GH immunofluorometric assay to examine the postulate that principally the amplitude mode of GH secretory control is disrupted in adults with GH deficiency. PATIENTS AND METHODS:To this end, we investigated GH secretory dynamics in a cohort of 19 adu...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1046/j.0300-0664.2001.01433.x
更新日期:2002-01-01 00:00:00
abstract::In an attempt to obtain further information on the aetiology of premenstrual syndrome (PMS), the endocrine changes following enucleation of the corpus luteum in the mid-luteal phase of the cycle were studied in seven patients with PMS, and the results compared to details of seven control patients undergoing hysterecto...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.1985.tb00162.x
更新日期:1985-06-01 00:00:00
abstract:BACKGROUND:The Dlk1 gene encodes for dlk1, a transmembrane protein belonging to the EGF-like repeat-containing family. Dlk1 has been shown to act as a regulator of adipogenesis. Fc-dlk1 transgenic mice show a decrease in adipose tissue and glucose tolerance, hypertriglyceridaemia and lower insulin sensitivity. Dlk1-def...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.2008.03170.x
更新日期:2008-08-01 00:00:00