Abstract:
:Estradiol has been used to prevent metabolic diseases, bone loss and menopausal symptoms, even though it might raise the risk of cancer. Metformin is usually prescribed for type 2 diabetes mellitus and lowers food intake and body mass while improving insulin resistance and the lipid profile. Ovariectomized rats show increased body mass, insulin resistance and changes in the lipid profile. Thus, the aim of this work was to evaluate whether metformin could prevent the early metabolic dysfunction that occurs early after ovariectomy. Female Wistar rats were divided into the following groups: SHAM-operated (SHAM), ovariectomized (OVX), ovariectomized + estradiol (OVX + E2) and ovariectomized + metformin (OVX + M). Treatment with metformin diminished approximately 50% of the mass gain observed in ovariectomized animals and reduced both the serum and hepatic triglyceride levels. The hepatic levels of phosphorylated AMP-activated protein kinase (pAMPK) decreased after OVX, and the expression of the inactive form of hepatic acetyl-CoA carboxylase (ACC) was also reduced. Metformin was able to increase the levels of pAMPK in the liver of OVX animals, sustaining the balance between the inactive and total forms of ACC. Estradiol effects were similar to those of metformin but with different proportions. Our results suggest that metformin ameliorates the early alterations of metabolic parameters and rescues hepatic AMPK phosphorylation and ACC inactivation observed in ovariectomized rats.
journal_name
Endocr Connectjournal_title
Endocrine connectionsauthors
Barthem CS,Rossetti CL,Carvalho DP,da-Silva WSdoi
10.1530/EC-19-0470subject
Has Abstractpub_date
2019-12-01 00:00:00pages
1568-1578issue
12issn
2049-3614pii
EC-19-0470journal_volume
8pub_type
杂志文章abstract:Objective:First-line chemotherapy in metastatic neuroendocrine carcinomas (NECs) is based on etoposide and platinum. However, there is no standard concerning second-line treatment. The objective of this study was to evaluate efficacy and tolerance of dacarbazine or temozolomide in metastatic digestive NEC as post first...
journal_title:Endocrine connections
pub_type: 杂志文章
doi:10.1530/EC-20-0192
更新日期:2020-06-01 00:00:00
abstract:Objective:The remarkable success of iodine deficiency disorders (IDD) elimination in China has been achieved through a mandatory universal salt iodization (USI) program. The study aims to estimate the relationship between urinary iodine concentration (UIC) and iodine content in edible salt to assess the current iodine ...
journal_title:Endocrine connections
pub_type: 杂志文章
doi:10.1530/EC-19-0568
更新日期:2020-05-01 00:00:00
abstract::The role of G protein-coupled estrogen receptor 1 (GPER) signaling, including promotion of Ezrin phosphorylation (which could be activated by estrogen), has not yet been clearly identified in triple-negative breast cancer (TNBC). This study aimed to evaluate the prognostic value of GPER and Ezrin in TNBC patients. Cli...
journal_title:Endocrine connections
pub_type: 杂志文章
doi:10.1530/EC-19-0164
更新日期:2019-06-01 00:00:00
abstract::This study aimed to evaluate the evolving trends in clinicopathological features of pancreatic neuroendocrine tumors and to analyze the predictors of recurrence after curative resection. Data collected retrospectively from a single center between January 1990 and December 2017 were analyzed. Patients were categorized ...
journal_title:Endocrine connections
pub_type: 杂志文章
doi:10.1530/EC-19-0282
更新日期:2019-07-01 00:00:00
abstract:AIMS:Gestational diabetes mellitus (GDM)-induced macrosomia is predominantly characterized by fat accumulation, which is closely related to adipocyte differentiation. An unknown long noncoding RNA RP11-290L1.3, referred to as RP11, was identified to be dramatically upregulated in the umbilical cord blood of women with ...
journal_title:Endocrine connections
pub_type: 杂志文章
doi:10.1530/EC-20-0584
更新日期:2021-01-01 00:00:00
abstract::Primary hyperparathyroidism (PHPT) is a common endocrinopathy, frequently caused by a parathyroid adenoma, rarely by a parathyroid carcinoma that lacks effective oncological treatment. As the majority of cases are present in postmenopausal women, oestrogen signalling has been implicated in the tumourigenesis. Oestroge...
journal_title:Endocrine connections
pub_type: 杂志文章
doi:10.1530/EC-14-0109
更新日期:2015-03-01 00:00:00
abstract:OBJECTIVE:Recently, mutations in KCNQ1, a potassium channel gene usually linked to long QT syndrome, were reported to cause maternally inherited gingival fibromatosis and growth hormone deficiency (GHD). Expression of the mutated KCNQ1 with the auxiliary potassium channel subunit KCNE2 was shown to reduce pituitary hor...
journal_title:Endocrine connections
pub_type: 杂志文章
doi:10.1530/EC-18-0123
更新日期:2018-05-01 00:00:00
abstract:OBJECTIVE:Patients with non-functioning pituitary adenomas exhibit high morbidity and mortality rates. Growth hormone deficiency and high doses of glucocorticoid substitution therapy have been identified as corresponding risk factors. Interestingly, high levels of endogenous cortisol in, e.g., patients with post-trauma...
journal_title:Endocrine connections
pub_type: 杂志文章
doi:10.1530/EC-18-0362
更新日期:2018-08-01 00:00:00
abstract::Hypothyroidism is associated with increased risk of atherosclerosis. We assessed carotid intima-media thickness (CIMT), as a marker of atherosclerosis, and endothelial function in patients with hypothyroidism. We included 70 female patients with hypothyroidism in the study, 40 patients with overt and 30 patients with ...
journal_title:Endocrine connections
pub_type: 杂志文章
doi:10.1530/EC-18-0194
更新日期:2018-10-01 00:00:00
abstract:Objective:Multiple endocrine neoplasia type 2A (MEN 2A) is a rare syndrome caused by RET germline mutations and has been associated with primary hyperparathyroidism (PHPT) in up to 30% of cases. Recommendations on RET screening in patients with apparently sporadic PHPT are unclear. We aimed to estimate the prevalence o...
journal_title:Endocrine connections
pub_type: 杂志文章
doi:10.1530/EC-20-0163
更新日期:2020-06-01 00:00:00
abstract::As many as 20-55% of patients with a history of traumatic brain injury (TBI) experience chronic endocrine dysfunction, leading to impaired quality of life, impaired rehabilitation efforts and lowered life expectancy. Endocrine dysfunction after TBI is thought to result from acceleration-deceleration forces to the brai...
journal_title:Endocrine connections
pub_type: 杂志文章
doi:10.1530/EC-16-0031
更新日期:2016-07-01 00:00:00
abstract:BACKGROUND:Worldwide there is a high prevalence of 25-hydroxyvitamin D (25OHD) deficiency and has been associated with adverse outcomes during pregnancy. OBJECTIVE:This is a nested, case-control study in a longitudinal cohort to compare the serum 25OHD levels and other biomarkers throughout pregnancy in a group of 20 ...
journal_title:Endocrine connections
pub_type: 杂志文章
doi:10.1530/EC-18-0055
更新日期:2018-05-01 00:00:00
abstract::The PI3K-Akt-mTOR pathway plays a central role in the development of non-medullary thyroid carcinoma (NMTC). Although somatic mutations have been identified in these genes in NMTC patients, the role of germline variants has not been investigated. Here, we selected frequently occurring genetic variants in AKT1, AKT2, A...
journal_title:Endocrine connections
pub_type: 杂志文章
doi:10.1530/EC-20-0311
更新日期:2020-11-01 00:00:00
abstract::Hormonal changes during pregnancy can trigger gestational diabetes (GDM), which is constantly increasing. Its main characteristic is pronounced insulin resistance, but it appears to be a multifactorial process involving several metabolic factors; taken together, the latter leads to silent or clinically evident cardiov...
journal_title:Endocrine connections
pub_type: 社论
doi:10.1530/EC-18-0130
更新日期:2018-05-01 00:00:00
abstract::Chemerin is a recently discovered adipokine with inflammatory and metabolic actions relevant for chronic disease development. However, evidence from human research on the role of chemerin in chronic disease risk is still lacking. We assessed the reliability of plasma chemerin concentrations measured on two occasions o...
journal_title:Endocrine connections
pub_type: 杂志文章
doi:10.1530/EC-17-0098
更新日期:2017-07-01 00:00:00
abstract:OBJECTIVE:The European Reference Network on Rare Endocrine Conditions (Endo-ERN), operational since 2017, consists of 71 health care providers (HCPs) in 19 EU member states. Our objective was to assess education and knowledge on rare endocrine conditions. DESIGN AND METHODS:A survey was developed and sent through the ...
journal_title:Endocrine connections
pub_type: 杂志文章
doi:10.1530/EC-20-0480
更新日期:2020-12-01 00:00:00
abstract::Insufficient insulin release plays a crucial role in the development of unhealthy status in patients with obesity; the present study aimed to classify these patients by the indices for insulin resistance and insulin release. After the indices from OGTT were assessed to achieve high differentiability and low redundancy...
journal_title:Endocrine connections
pub_type: 杂志文章
doi:10.1530/EC-19-0476
更新日期:2020-02-01 00:00:00
abstract::The antihypertensive actions of glucagon-like peptide-1 (GLP1) receptor agonists have been linked to the release of atrial natriuretic peptide (ANP) in mice. Whether a GLP1-ANP axis exists in humans is unknown. In this study, we examined 12 healthy young males in a randomized, controlled, double-blinded, single-day, c...
journal_title:Endocrine connections
pub_type: 杂志文章
doi:10.1530/EC-13-0087
更新日期:2014-01-21 00:00:00
abstract::Failure to suppress testosterone below 0.7 nM in castrated prostate cancer patients is associated with poor clinical outcomes. Testosterone levels in castrated patients are therefore routinely measured. Although mass spectrometry is the gold standard used to measure testosterone, most hospitals use an immunoassay meth...
journal_title:Endocrine connections
pub_type: 杂志文章
doi:10.1530/EC-18-0476
更新日期:2019-02-01 00:00:00
abstract::Many biomarkers are associated with type 2 diabetes (T2D) risk in epidemiological observations. The aim of this study was to identify and summarize current evidence for causal effects of biomarkers on T2D. A systematic literature search in PubMed and EMBASE (until April 2015) was done to identify Mendelian randomizati...
journal_title:Endocrine connections
pub_type: 杂志文章
doi:10.1530/EC-15-0087
更新日期:2015-12-01 00:00:00
abstract:Purpose:Gallbladder neuroendocrine neoplasm (GB-NEN) is a relatively rare neoplasm, accounting for 0.5% of all neuroendocrine neoplasm cases and 2.1% of gallbladder cancers. Because of the limited understanding of GB-NEN, the aim of this study was to explore the clinicopathology and survival of GB-NEN patients selected...
journal_title:Endocrine connections
pub_type: 杂志文章
doi:10.1530/EC-19-0124
更新日期:2019-09-01 00:00:00
abstract::The renin-angiotensin system (RAS), mainly associated with the regulation of blood pressure, has been recently investigated in female reproductive organs and the developing foetus. Angiotensin II (Ang II) influences oviductal gamete movements and foetal development, but there is no information about RAS in the early e...
journal_title:Endocrine connections
pub_type: 杂志文章
doi:10.1530/EC-12-0013
更新日期:2012-06-21 00:00:00
abstract::Hypercalcemic crisis is a severe but rare complication of primary hyperparathyroidism (PHPT), and data on denosumab treatment of patients with this disease is still very limited. The aim of this paper is to investigate the hypocalcemic effect of denosumab in PHPT patients with severe hypercalcemia when surgery should ...
journal_title:Endocrine connections
pub_type: 杂志文章
doi:10.1530/EC-20-0380
更新日期:2020-10-01 00:00:00
abstract::B lymphocytes are the source of autoantibodies against the thyroid-stimulating hormone receptor (TSHR) in Graves' disease (GD). Characterization of autoimmune B-cell expression profiles might enable a better understanding of GD pathogenesis. To reveal this, the expression levels of long noncoding RNAs (lncRNAs) and mR...
journal_title:Endocrine connections
pub_type: 杂志文章
doi:10.1530/EC-20-0045
更新日期:2020-05-01 00:00:00
abstract:Objectives:The aims of this paper were to evaluate the levels of Vitamin D (VitD) in patients with heart failure (HF), compared to a control group, to assess the effects of VitD on HF outcome and to compare VitD measurement between LIAISON immunoassay and HPLC-MS-MS methods in this population. Design and Methods:We co...
journal_title:Endocrine connections
pub_type: 杂志文章
doi:10.1530/EC-18-0207
更新日期:2018-09-01 00:00:00
abstract::Steroid hormones play clinically important and specific regulatory roles in the development, growth, metabolism, reproduction and brain function in human. The type 1 and 2 11-beta hydroxysteroid dehydrogenase enzymes (11β-HSD1 and 2) have key roles in the pre-receptor modification of glucocorticoids allowing aldostero...
journal_title:Endocrine connections
pub_type: 杂志文章
doi:10.1530/EC-17-0119
更新日期:2017-10-01 00:00:00
abstract::Vitamin D deficiency is common in pregnant women and may contribute to adverse events in pregnancy such as preeclampsia (PET). To date, studies of vitamin D and PET have focused primarily on serum concentrations vitamin D, 25-hydroxyvitamin D3 (25(OH)D3) later in pregnancy. The aim here was to determine whether a more...
journal_title:Endocrine connections
pub_type: 杂志文章
doi:10.1530/EC-17-0308
更新日期:2018-01-01 00:00:00
abstract::Background and objectives Glucocorticoids are used to manage adrenal insufficiency (AI). We describe treatments used in the United Kingdom and real-world clinical outcomes for each treatment. Methods We used 2010-2016 primary care data from The Health Improvement Network (THIN). Descriptive analyses were conducted, an...
journal_title:Endocrine connections
pub_type: 杂志文章
doi:10.1530/EC-18-0418
更新日期:2019-01-01 00:00:00
abstract:BACKGROUND:The Institute of Medicine 2011 Report on Dietary Reference Intakes for Calcium and Vitamin D specified higher intakes for all age groups compared to the 1997 report, but also cautioned against spurious claims about an epidemic of vitamin D deficiency and against advocates of higher intake requirements. Over ...
journal_title:Endocrine connections
pub_type: 杂志文章
doi:10.1530/EC-15-0037
更新日期:2015-09-01 00:00:00
abstract:Background:A high level of free triiodothyronine (FT3) within the reference range may be a potential metabolic risk marker. However, the relationship between different fat depots and FT3 has remained unclear. Objective:We aimed to explore the relationships between segmental fat distribution and FT3 in euthyroid middle...
journal_title:Endocrine connections
pub_type: 杂志文章
doi:10.1530/EC-19-0394
更新日期:2019-10-01 00:00:00