Abstract:
:Reportedly, the responsiveness of somatotrope cells to GHRH is reduced in elderly humans but it is totally restored by arginine (ARG) which likely acts by inhibiting hypothalamic release of somatostatin. As this effect was observed after infusion of high doses of the amino acid, in this study, we compared the effect of iv administration of 30, 10 and 5 g ARG(group A, B and C, respectively) as well as oral administration of 8 g ARG(group D) on the GH response to 1 microgram/kg i.v.GHRH in 27 healthy elderly subjects (11 M and 16 F, age 70-86 yr, BMI 21-25 kg/m2). In group A (n = 7) 30 g i.v. ARG strikingly enhanced the GHRH-induced GH rise (peak, mean +/- SE: 41.5 +/- 4.4 vs 11.7 +/- 5.3 micrograms/L, p < 0.05). Similarly, in group B (n = 6) and D (n = 7) 10 g i.v. and 8 g oral ARG enhanced the GH response to GHRH (20.9 +/- 4.7 vs 8.3 +/- 2.8 micrograms/L, p < 0.03 and 31.0 +/- 5.3 vs 11.4 +/- 3.4 micrograms/L, p < 0.03, respectively). In contrast, in group C (n = 7) 5 g i.v. ARG failed to modify the GHRH-induced GH rise (6.0 +/- 1.6 vs 3.5 +/- 0.9 micrograms/L). The GH responses to GHRH alone did not significantly differ amongst groups; the GH responses to GHRH and ARG were not significantly different among groups A, B and D and were greater than the GH response in group C. These results show that the GH response to GHRH in elderly subjects is enhanced even by low iv doses of arginine and by the orally administered amino acid, the lowest effective dose being 8 g. Moreover, they imply that the combined administration of GHRH and arginine may be a useful approach to restore the impaired function of the GH-IGF axis in aging.
journal_name
J Endocrinol Investjournal_title
Journal of endocrinological investigationauthors
Ghigo E,Ceda GP,Valcavi R,Goffi S,Zini M,Mucci M,Valenti G,Cocchi D,Müller EE,Camanni Fdoi
10.1007/BF03347695subject
Has Abstractpub_date
1994-02-01 00:00:00pages
113-7issue
2eissn
0391-4097issn
1720-8386journal_volume
17pub_type
临床试验,杂志文章abstract::Impaired glucose tolerance is present in many acromegalic patients and treatment with somatostatin analogs has variable effects on glycemic control. The aim of this study was to compare the effects of 2 somatostatin analogs on glucose metabolism, lanreotide slow release (L-SR) and octreotide long acting release (O-LAR...
journal_title:Journal of endocrinological investigation
pub_type: 临床试验,杂志文章
doi:10.1007/BF03345491
更新日期:2002-06-01 00:00:00
abstract::1-123 metaiodobenzylguanidine (1-123 MIBG) scintigraphy is known for its high specificity in detecting pheochromocytoma and other tumors of neural crest origin. In this rare case report, we describe a definite adrenocortical adenoma that demonstrated false-positive uptake at I-123 MIBG scintigraphy and a remarkable ac...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03348046
更新日期:1998-12-01 00:00:00
abstract:BACKGROUND:The coexistence of insulin and ACTH hypersecretion in the same patient is extremely rare. A diabetic patient with a pancreatic endocrine tumor (PET) co-secreting insulin and ACTH is even rarer and has never been described. The combination of these two endocrine syndromes results in a peculiar clinical pictur...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03347062
更新日期:2011-03-01 00:00:00
abstract:OBJECTIVE:To determine the difference of serum levels of 10 adipokines (apelin, chemerin, fatty acid-binding protein-4, fibroblast growth factor-21, monocyte chemoattractant protein-1, nesfatin-1, omentin-1, resistin, vaspin, and visfatin) among women with gestational diabetes and healthy pregnant controls. MATERIALS ...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/s40618-018-0973-2
更新日期:2019-06-01 00:00:00
abstract::Molecular diagnostics of the LHR gene was conducted in a 5-year-old boy with clinical symptoms and hormonal profile typical of precocious puberty. His parents and 4 sisters were also diagnosed. Single-strand conformation polymorphism analysis under temperature gradient conditions (Multitemperature SSCP) of 3 overlappi...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03344001
更新日期:2002-03-01 00:00:00
abstract:BACKGROUND:The aim of this study is to analyze our preliminary results from minimally invasive video-assisted parathyroidectomy (MIVAP) and demonstrate the feasibility of MIVAP also in non-referral centers. MATERIAL AND METHODS:During a period from June 2005 to January 2008, in the General Surgery Department of Univer...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03345701
更新日期:2009-02-01 00:00:00
abstract::Thyrotropin binding characteristics and adenylate cyclase (AC) activity of thyroid plasma membranes were studied in 52 tissues from normal and diseased human thyroids. Data from normal glands, Graves' goiters, non toxic multinodular goiters and nodular and perinodular tissue of toxic nodular goiters show the same basa...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03350977
更新日期:1978-10-01 00:00:00
abstract::The effects of estriol on serum prolactin (PRL) and LH levels, on the pituitary response to TRH and LHRH and on the synthesis and release of PRL from the anterior pituitary gland were investigated in female rats. The increase of serum PRL levels after estradiol administration was found to be associated with an increas...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03349902
更新日期:1989-01-01 00:00:00
abstract::Established methods for definitive ablation of autonomous thyroid nodules are surgery and radioiodine. Since it has been demonstrated that percutaneous ethanol injection can inactivate parathyroid adenomas and small hepatocellular carcinomas, we started a trial of this treatment in patients with autonomous thyroid nod...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03348753
更新日期:1992-05-01 00:00:00
abstract::Thyrocytes from normal and goitrous portions of the thyroid gland from a patient with an enormous (635 gm) goiter were cultured in media, and their relative abilities to uptake thymidine, synthesize DNA, and secrete Tg and T4 were assessed. Tg, T4 and the ratio Tg/T4 in media at 72 h were 120 micrograms/dl, 1.6 microg...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03348184
更新日期:1987-10-01 00:00:00
abstract::Liquid-chromatography - tandem mass spectrometry (LC-MS/MS) is becoming the method of choice for clinical steroid analysis. In most instances, it has the advantage of higher sensitivity, better reproducibility and greater specificity than commercial immunoassay techniques. The method requires only minimal sample prepa...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章,评审
doi:10.3275/7843
更新日期:2011-10-01 00:00:00
abstract::We report here on the isolation and repertoire characterization of a Graves' thyroid T cell population which, unlike most Graves' thyroid T cell isolates reported before, was rich in CD4-CD8- T cells (16%, all TcR gamma delta+) and CD8+ T cells (75%) [TcR alpha beta+ (59%) and TcR gamma delta+ (16%)]. Only 7% of the i...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03348958
更新日期:1993-12-01 00:00:00
abstract::Cimetidine, an H2 receptor antagonist, is a potent stimulant of PRL secretion in normal women. In the present study, the PRL response to cimetidine was studied in 34 normal pregnant women and their fetuses during labor. Serum maternal PRL levels increased significantly after the acute iv injection of 400 mg cimetidine...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03350225
更新日期:1988-12-01 00:00:00
abstract:OBJECTIVE:To assess the relationship of waist circumference and weight/height ratio with height, and their association with components of the metabolic syndrome, in Type 2 diabetic patients. DESIGN:multicenter cross-sectional survey on a cohort enrolled in a prospective observational study. SUBJECTS:13,232 patients (...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章,多中心研究
doi:10.1007/BF03347475
更新日期:2004-06-01 00:00:00
abstract::Basal IGF-I levels and the GH response to at least two among provocative stimuli such as clonidine (CLO, Catapresan, 150 mcg/m2 p.o.), GHRH (1 mcg/kg i.v.)+arginine (ARG, 0.5 g/kg i.v. infusion during 30 min) and GHRH+pyridostigmine (PD, Mestinon cpr 60 mg p.o.) have been evaluated in 43 children with Prader-Willi syn...
journal_title:Journal of endocrinological investigation
pub_type: 临床试验,杂志文章
doi:10.1007/BF03343684
更新日期:2000-02-01 00:00:00
abstract::The pathogenesis of human obesity is the result of dysregulation of the reciprocal relationship between food intake and energy expenditure (EE), which influences daily energy balance and ultimately leads to weight gain. According to principles of energy homeostasis, a relatively lower EE in a setting of energy balance...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章,评审
doi:10.1007/s40618-017-0732-9
更新日期:2018-01-01 00:00:00
abstract::We treated a 10 6/12 year old prepubertal male with hypophosphatemic rickets, who was growing poorly despite appropriate treatment with calcitriol and phosphate, with exogenous growth hormone (for an initial trial period of 4 months, followed by 14 months of continuous treatment at a dose of 4 IU three times weekly) e...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03349633
更新日期:1990-11-01 00:00:00
abstract::A 50 year old man is described in whom primary hypothyroidism and isolated ACTH deficiency leading to adrenocortical insufficiency occurred simultaneously. Low thyroid hormone levels, elevated serum TSH values and high titers of antithyroid antibodies (ATA) were consistent with primary hypothyroidism. The diagnosis of...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03348331
更新日期:1982-07-01 00:00:00
abstract::Multiple pituitary hormone hypersecretions have already been described, but the co-occurrence of PRL and ACTH excess is very rare. To our knowledge, medical treatment with cabergoline only, avoiding pituitary surgery and radiotherapy in this type of tumor has never been reported before. This case report deals with a 3...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03343983
更新日期:2002-02-01 00:00:00
abstract:AIM:To evaluate if nutritional intakes and lipid profile fulfill international guidelines and recommendations before and after a structured dietician training to a Mediterranean- style diet in an Italian pediatric population with Type 1 diabetes. METHODS:A 6-month prospective cohort study. Baseline and after-intervent...
journal_title:Journal of endocrinological investigation
pub_type: 临床试验,杂志文章
doi:10.3275/7755
更新日期:2012-02-01 00:00:00
abstract::Papillary thyroid cancer (PTC) accounts for 80% of all thyroid malignancies, and genetic alterations associated to its etiology remain largely unknown. Chromosomal band 11q13 seems to be one of the most frequently amplified regions in human cancer, providing several candidate genes that need detailed characterization....
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03345613
更新日期:2008-07-01 00:00:00
abstract::Stroke is one of the main causes of death and disability in the adult population. Changes in pituitary hormone secretion may be observed during the acute phase of stroke, representing part of the adaptive response to injury. However, reduced pituitary hormone secretion, caused by pituitary and/or hypothalamus damage, ...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章,评审
doi:
更新日期:2008-09-01 00:00:00
abstract::Monolayer cultures of medullary thyroid carcinoma (MTC) cells were prepared from 5 patients with familial and 4 with sporadic MTC. Basal calcitonin (CT) release decreased rapidly during 17 days in culture. Addition of extra calcium (2 mmol/l) or dibutyryl cyclic AMP (dBcAMP, 3 mmol/l) increased CT release in all inves...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03347169
更新日期:1987-04-01 00:00:00
abstract::Because women affected by polycystic ovary syndrome (PCOS) present an increased cardiovascular risk, the safety of estroprogestin treatment is debated and contrasting data have been reported. However, cardiovascular risk is not the same in all PCOS women and individual cardiovascular risk should be assessed before sta...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章,评审
doi:10.3275/8882
更新日期:2013-05-01 00:00:00
abstract::We examined the distribution of nuclear T3 in mature rat brain with the aim of determining specific targets of thyroid hormones within this tissue. Saturation experiments, performed in 9 different structures of the brain and in 4 parts of the cortex, revealed the presence of a single class of binding sites with a mean...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03348511
更新日期:1985-08-01 00:00:00
abstract::Severe bleeding into the peritoneal cavity from a ruptured ovulatory follicle is a rare complication in women receiving anticoagulation therapy. A number of both surgical and non surgical methods have been proposed to solve this problem. We adopted a novel therapeutic approach in a 40-year old patient who presented wi...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03348998
更新日期:1994-05-01 00:00:00
abstract::Autoimmune polyendocrinopathy-candidiasis-ectodermal dystrophy (APECED) is a rare, but well-defined monogenic disorder that is caused by mutations in the autoimmune regulator (AIRE) gene on chromosome 21q22.3. Patients most often suffer from loss of endocrine function in the parathyroid and adrenal glands but may also...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章,评审
doi:10.1007/BF03345516
更新日期:2002-10-01 00:00:00
abstract::There has been a substantial increase in women practicing sports over the past 30 yr. While exercise provides many health benefits, there appears to be a unique set of risks associated with intense exercise for the female athlete. The female athlete triad encompasses these risks, including amenorrhea, osteoporosis and...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章,评审
doi:10.1007/BF03345238
更新日期:2003-09-01 00:00:00
abstract::The authors report the profiles of luteinizing hormone (LH), estradiol (E2), progesterone (P) and androstenedione (A) in some female pigs with altered plasma hormonal levels. Twenty cycles are described and 19 out of them are characterized by low plasma P in luteal phase of different etiology, at least as measured by ...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03350557
更新日期:1983-02-01 00:00:00
abstract::The regulation of GH secretion involves the harmonious integration of factors acting at the hypothalamic and pituitary levels summating to produce the peripheral patterns of intermittent GH secretion observed in man and experimental animals under physiologic and experimental conditions. SRIH and GHRH act primarily at ...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章,评审
doi:
更新日期:1989-01-01 00:00:00