Abstract:
:Prolactin (PRL) circulates as multiple molecular weight variants: glycosylated phosphorylated, deamidated and sulphated forms. The profiles of the forms, as determined by isoelectrofocusing (IEF), differ in physiological and pathological conditions. The case of a 72-year-old woman affected by an invasive prolactinoma is described. The patient had undergone surgical treatment followed by radiotherapy at the age of 71 years. Bromocriptine therapy followed (up to 10 mg/die), but the PRL levels were still extremely high (over 13,000 micrograms/l as determined by IRMA, after dilution). We therefore treated the patient with quinagolide, at increasing dosages, from 150 micrograms/die on day 0 to 600 micrograms/die on day 220. This treatment progressively lowered PRL to 23.2 micrograms/l. In addition to a decrease in PRL levels, a progressive change in the IEF profile was also noted. Indeed, on day 0, the PRL isoforms were very acidic and during treatment they progressively shifted toward a more basic range. For purpose of comparison PRL profiles were also determined in 8 women with pathological hyperprolactinaemia (group A, aged 16-50 years, PRL levels: 25.1-170.4 micrograms/l), in 6 normal women (group B, aged 25-29 years, PRL levels: 3.4-7.9 micrograms/l) and in 5 normal women during a TRH test (group C, aged 17-52 years, PRL levels: 2.7-10.3 micrograms/l). The profiles observed in group A had a single major peak at isoelectric point (pI) 6.5, while the group B and C profiles were more heterogeneous displaying multiple minor peaks, the majority of the molecules being in a more basic range (pI 6.9 for group B and pI 7.5 for group C). During treatment, the profiles of our subject at first resembled those of group A; subsequently, when the PRL levels had normalised, the profile resembled those noted in group B. Altered (immature?, more glycosilated?, less bioactive?) PRL molecules could be secreted by the tumour. These data show that quinagolide successfully reduced PRL levels, while inducing secretion of forms more similar to those found in women affected by pathological hyperprolactinaemia or in normal women.
journal_name
J Endocrinol Investjournal_title
Journal of endocrinological investigationauthors
Guido R,Valenti S,Foppiani L,De Martini D,Cossu M,Giusti Mdoi
10.1007/BF03350303subject
Has Abstractpub_date
1997-05-01 00:00:00pages
289-93issue
5eissn
0391-4097issn
1720-8386journal_volume
20pub_type
杂志文章abstract:BACKGROUND AND AIMS:Non-alcoholic fatty liver disease (NAFLD) and metabolic syndrome (MS) are well-recognized complications of obesity. This study was designed to evaluate the role of the UCP1 -3826 A>G polymorphism, adiponectin levels, leptin/adiponectin ratio (L/A), and main biochemical parameters in 102 unrelated se...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03346500
更新日期:2009-06-01 00:00:00
abstract::Testosterone therapy has been reported to be useful in the treatment of hypogonadism and partial androgen deficiency of the aging male (PADAM) syndrome. Testosterone administration is needed in order to maintain secondary sexual characteristics, muscle mass, bone mineral density, cognitive function and sexual drive. N...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章,评审
doi:
更新日期:2005-01-01 00:00:00
abstract:PURPOSE:Although men with spinal cord injury (SCI) exhibit a prostate volume significantly smaller compared to age-matched able-bodied men, the independent association of lower prostate volume with its putative determinants has never been analyzed in this population. This study was designed to identify variables indepe...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/s40618-020-01243-3
更新日期:2020-11-01 00:00:00
abstract::Thyroid hormone acts on the oocytes, sperm and embryo during fertilization, implantation and placentation. Both hypothyroidism and hyperthyroidism may influence fertility. However, evidence of the association of hyperthyroidism with infertility is scarce and sometimes conflicting. Thyroid hormone influences human repr...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章,评审
doi:10.1007/s40618-016-0452-6
更新日期:2016-08-01 00:00:00
abstract::Estrogen deficiency in females and androgen deficiency in males may harm periosteal and endosteal apposition, reduce bone size and both cortical and trabecular thickness, modifying in this way the bone structure later in life. To date, few systematic studies on bone mineral density (BMD) and hypogonadism in adolescent...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03346513
更新日期:2009-07-01 00:00:00
abstract::Juvenile Rheumatoid Arthritis (JRA) is frequently associated with osteoporosis. In order to determine if JRA osteoporosis is related to reduced formation or to increased bone resorption or both, serum levels of calcium (Ca), phosphorus (PO4), magnesium (Mg), alkaline phosphatase (ALP), parathormone (PTHi), 25-hydroxyv...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03347283
更新日期:1998-01-01 00:00:00
abstract::The differential diagnosis of an osteoblastic vertebral lesion (ivory vertebra) includes metastatic prostate cancer, lung cancer, lymphoma, osteosarcoma and Paget's disease. We report a case of a man who was initially diagnosed with Paget's disease on vertebral biopsy. He failed to respond to conventional bisphosphate...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03343770
更新日期:2000-09-01 00:00:00
abstract::Much research has demonstrated that in late pregnancy glucose administration causes a marked increase of peripheral insulin levels. To ascertain whether this particular increase is due to increased insulin secretion and/or to reduced hepatic insulin removal, we measured blood glucose, plasma C-peptide and plasma insul...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03347933
更新日期:1991-11-01 00:00:00
abstract::In testicular descent to the scrotum, a multistep process, many anatomical and hormonal factors play a role. Cryptorchidism occurs in about 1-2% of males and may cause secondary degeneration of the testes. Animal models have shown that abnormalities, in the calcitonin gene-related peptide (CgRP) activity, could be rel...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03347519
更新日期:2004-09-01 00:00:00
abstract::Preliminary hormonal studies in a 18-y old man with the clinical features of Cushing's syndrome showed inconclusive and conflicting results both in basal conditions and after metyrapone and dexamethasone administration. Therefore the possibility of a cyclical or acyclical fluctuation of adrenal hypersecretion was susp...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03347163
更新日期:1987-02-01 00:00:00
abstract::Neurological disorders, such as seizures, are not infrequently associated with anti-leukemic therapy. It has been hypothesized that a disrupted peptidergic transmission between neurons could be the cellular basis of the neurological dysfunction. Since endogenous opioids have been recently found to alter neuronal funct...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03350022
更新日期:1989-10-01 00:00:00
abstract:PURPOSE:Polycystic ovary syndrome (PCOS) is a common heterogeneous endocrine disorder companied with neuroendocrine and metabolic disorders. Gut microbiota has been implicated to play a key role in metabolic diseases and the production of neurotransmitters. Previous studies have reported the alterations in the gut micr...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/s40618-020-01481-5
更新日期:2021-01-02 00:00:00
abstract::Volume receptors are situated in many organs and are capable of modulating ADH secretion. We have evaluated the variation of plasma ADH concentration after an experimentally induced increase of cerebrospinal fluid (CSF) pressure (PCSF). The experiment was performed in controlled environmental conditions to avoid pain ...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03349891
更新日期:1996-07-01 00:00:00
abstract:BACKGROUND AND AIM:Familial adenomatous polyposis (FAP) is an autosomal inherited syndrome characterized by hundreds to thousands colorectal adenomatous polyps with oncological transformation lifetime risk of 100%. FAP is mainly associated with mutations in APC (autosomal dominant inheritance) or MUTYH (autosomal reces...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03346656
更新日期:2010-10-01 00:00:00
abstract::Thyrotoxicosis factitia, a syndrome due to the surreptitious ingestion of excess thyroid hormones, has generally been diagnosed in young or middle-aged women with psychopathological disturbances. We reviewed all the cases seen at our Institution over a 24-yr period, from 1973 to 1996. All 25 patients were women. Analy...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03350892
更新日期:1999-02-01 00:00:00
abstract::Dopamine agonists have been associated with increased risk of cardiac valve regurgitation in patients with Parkinson's disease. Whether these drugs might be harmful for patients with hyperprolactinemia is still unsettled. Occasional case reports and 7 studies on the relationship between cabergoline and cardiac valve r...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章,meta分析,评审
doi:10.1007/BF03345662
更新日期:2008-12-01 00:00:00
abstract:OBJECTIVE:To our knowledge, no case of remission in autoimmune Addison's disease has previously been reported. We describe a patient with primary adrenal insufficiency caused by autoimmune adrenalitis in whom partial remission was observed after 7 yr. CASE:A 39-yr-old male was referred because of extreme fatigue, weig...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03345623
更新日期:2008-07-01 00:00:00
abstract::A case of malignant islet-cell tumor with oncocytic features occurring in a 54-year-old woman with symptoms of organic hypoglycemia is reported. The tumor was composed of ribbons of cells arranged in an endocrine pattern. The cytoplasm of these cells was eosinophilic and finely granular. Ultrastructurally, the cells c...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章,评审
doi:10.1007/BF03348712
更新日期:1992-03-01 00:00:00
abstract:AIMS:To investigate the prevalence of metabolic syndrome and its components in both rural and urban Chinese population. SUBJECTS AND METHODS:A population-based crosssectional survey was conducted in Qingdao, China in 2006 with 6100 Chinese aged 35-74 yr invited and 5355 who attended; 3357 subjects, 1562 urban (46.5%) ...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章,随机对照试验
doi:10.1007/BF03346711
更新日期:2011-06-01 00:00:00
abstract::The article "EStradiol and PRogesterone in In vitro ferTilization (ESPRIT): a multicenter study evaluating third‑ versus second‑generation estradiol and progesterone immunoassays. ...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章,已发布勘误
doi:10.1007/s40618-020-01295-5
更新日期:2020-09-01 00:00:00
abstract::We describe a patient with Cushing's syndrome and metastatic small cell lung cancer. The plasma ACTH concentrations were markedly elevated (91.6 pmol/L), and the AM cortisol did not suppress by > 50% overnight after administration of 8 mg dexamethasone, both consistent with the ectopic ACTH syndrome. Immunohistochemic...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03347737
更新日期:1994-06-01 00:00:00
abstract::We evaluated the effect of six-month treatment with growth hormone (GH) or low-dose oxandrolone in a group of boys with constitutional growth delay (CGD). Sixteen boys were randomly assigned to two treatment groups. Group 1 received GH (0.6 U/kg/week sc 5-6 times/week) and Group 2 received oxandrolone (0.07 mg/kg po)....
journal_title:Journal of endocrinological investigation
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1007/BF03347908
更新日期:1991-10-01 00:00:00
abstract::This report describes the results of the second part of the collaborative study organized by a working group sponsored by the Community Bureau of Reference of the European Community Commission. The whole study was designed to understand the causes of discrepancy among LH immunoassay methods. In the parent report we de...
journal_title:Journal of endocrinological investigation
pub_type: 临床试验,杂志文章
doi:10.1007/BF03347727
更新日期:1994-06-01 00:00:00
abstract:BACKGROUND:Due to the lack of specific pediatric studies, no data are available about natural history of endogenous subclinical hyperthyroidism (SH) in childhood. AIMS:(a) To investigate for the first time the natural history of SH [suppressed thyrotropin (TSH) and normal free thyroxine free thyroxine (FT4) levels] wh...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章,多中心研究
doi:10.1007/s40618-014-0054-0
更新日期:2014-03-01 00:00:00
abstract::The case of a 34-yr-old Caucasian male with Graves' disease presenting with a flaccid quadriplegia and severe hypokalemia is reported. The weakness was prevalent at the lower extremities and began during nocturnal sleep, after a strenuous physical exertion performed during the day. Correction of hypokalemia promptly r...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03347807
更新日期:1995-03-01 00:00:00
abstract:PURPOSE:Few examples of the involvement of a single gene in idiopathic short stature have been described until now. Our aim was to identify the causative gene of proportionate short stature in a large family showing co-segregation of the phenotype with the reciprocal translocation t(10;15)(q22;q24). METHODS:FISH mappi...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/s40618-017-0819-3
更新日期:2018-08-01 00:00:00
abstract:BACKGROUND:The Arnolfini portrait painted by Jan van Eyck in 1434 remains one of the most puzzling yet alluring paintings of prerenaissance western art. PURPOSE:The painting is renowned for its exactitude in brush strokes, textures and the distinctive morphology of the main character Arnolfini. The nature of these req...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/s40618-017-0751-6
更新日期:2018-01-01 00:00:00
abstract::In normal man 1,25 (OH)2-vitamin D3 [1,25 (OH)2D] increases both basal and TRH-stimulated prolactinemia; this effect is completely reversible by the calcium antagonist nifedipine. Similarly the 1,25 (OH)2D-induced hypercalcemia is totally inhibited by nifedipine. These findings suggest that both biological effects of ...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03350657
更新日期:1985-04-01 00:00:00
abstract:BACKGROUND:The significance of vitamin D deficiency in the incidence of bone fractures in children has been under investigated. Here, we aimed to associate serum 25-hydroxyvitamin D levels and fractures in Saudi children. MATERIALS AND METHODS:This cross-sectional study was conducted in 1022 Saudi children without fra...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/s40618-016-0496-7
更新日期:2016-10-01 00:00:00
abstract::The long-acting somatostatin analogue SMS 201-995 has been used efficaciously in the therapy of metastatic carcinoid tumor, vasoactive intestinal peptide producing islet cell carcinoma, acromegaly, and TSH secreting pituitary tumors. We report the development of a gallstone in a patient treated for 23 months with a lo...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03348589
更新日期:1990-01-01 00:00:00