Abstract:
:Diabetes mellitus impairs ventricular function, which itself may be disparately influenced by gender. This study compared the impact of gender on cardiac contractile response in ventricular myocytes from wild-type FVB and calmodulin-induced diabetic transgenic (OVE26) mice at young (2 month) and older (11 month) age. Mechanical and intracellular Ca2+ properties of cardiac myocytes were evaluated using an IonOptix MyoCam system. Diabetic mice of both genders exhibited significantly elevated blood glucose regardless of age. OVE26 myocytes displayed reduced peak shortening (PS) and maximal velocity of shortening/relengthening (+/- dL/dt), and prolonged time-to-PS (TPS) and time-to-90% relengthening (TR90), associated with higher resting intracellular Ca2+ levels and attenuated Ca(2+)-induced intracellular Ca2+ release compared with the FVB myocytes. Peak shortening and +/- dL/dt were smaller in female FVB groups when compared to the age-matched male counterparts. However, these gender differences were ablated by the diabetic state. No significant gender-related differences in intracellular Ca2+ handling were noted in either FVB or OVE26 myocytes, with the exception of overt gender differences in OVE26 mice when age was taken into account. Young female OVE26 mice exhibited better-preserved mechanical function while older female OVE26 mice displayed the worst mechanical function among all four OVE26 groups. In conclusion, our data confirmed impaired cardiac contractile function in diabetes, partially due to altered intracellular Ca2+ handling, in both genders. Mechanical differences existed between genders but were "cancelled off" by diabetic state. Nevertheless, a "female advantage" in ventricular function may still persist in young female diabetic subjects.
journal_name
Endocr Resjournal_title
Endocrine researchauthors
Zhang X,Ye G,Duan J,Chen AF,Ren Jdoi
10.1081/erc-120022318subject
Has Abstractpub_date
2003-05-01 00:00:00pages
227-36issue
2eissn
0743-5800issn
1532-4206journal_volume
29pub_type
杂志文章abstract::Purpose: Testotoxicosis is an autosomal dominant form of limited gonadotropin-independent precocious puberty in boys. It is caused by a heterozygous constitutively activating mutation of the LHCGR gene encoding the luteinizing/hormone receptor (LHR). Some twenty mutations of the LHCGR gene have been reported. Most of ...
journal_title:Endocrine research
pub_type: 杂志文章
doi:10.1080/07435800.2019.1645163
更新日期:2020-02-01 00:00:00
abstract::This study was performed on 18 postmenopausal female volunteers in order to examine changes in sex hormone binding globulin (SHBG), high density lipoprotein cholesterol (HDLC), total cholesterol (TC) and serum triglyceride (TG) levels in a period of four months of moderate physical exercise. While SHBG decreased signi...
journal_title:Endocrine research
pub_type: 杂志文章
doi:10.3109/07435809209111036
更新日期:1992-01-01 00:00:00
abstract::Purpose: Limited and contradictory data on the circulating levels of glucagon-like peptide (GLP-1) and resistin in hepatitis C virus genotype-4 (HCV-4) cirrhotic patients are present. Thus, this study aimed to evaluate their concentrations and to investigate the association between total GLP-1, resistin, and insulin r...
journal_title:Endocrine research
pub_type: 杂志文章
doi:10.1080/07435800.2019.1627551
更新日期:2020-02-01 00:00:00
abstract::Plasminogen activator inhibitor-1 (PAI-1) levels were found to be associated with obesity, indicating that adipocytes might influence PAI-1 plasma levels. In addition, the 4G/5G promoter polymorphism of the PAI-1 gene possibly modulates PAI-1 gene transcription and, as a consequence, PAI-1 plasma levels. Metabolic par...
journal_title:Endocrine research
pub_type: 临床试验,杂志文章
doi:10.1081/erc-200035728
更新日期:2004-08-01 00:00:00
abstract::The sexual dimorphism of life span and caloric restriction effects in numerous species suggest that estradiol (E2) is protective against oxidative damage. The only direct test of E2's protective effect in mice against in vivo oxidative stress to date may have been confounded by E2's direct chemical action as an antiox...
journal_title:Endocrine research
pub_type: 杂志文章
doi:10.1080/07435800902913600
更新日期:2009-01-01 00:00:00
abstract::T3 receptors are ligand-dependent transcriptional activators that can stimulate gene expression resulting in growth and development. In this study T3 binding sites on isolated liver nuclei are demonstrated in the teleost Anabas testudineus. The effect of hypothyroidism and feeding of polyunsaturated fatty acids (PUFA)...
journal_title:Endocrine research
pub_type: 杂志文章
doi:10.1081/erc-100106010
更新日期:2001-08-01 00:00:00
abstract::Hippocampal functions are influenced by steroid hormones, such as testosterone and estradiol. It has been demonstrated that hippocampus-derived steroid hormones play important roles in neuronal protection and synapse formation. Our research groups have demonstrated that estradiol is de novo synthesized in the rat hipp...
journal_title:Endocrine research
pub_type: 杂志文章
doi:10.3109/07435800.2013.875563
更新日期:2014-01-01 00:00:00
abstract::We quantitated serial serum beta-hydroxybutyrate (beta-OHB) levels using the Ketosite method in 9 children with IDDM who were treated for diabetic ketoacidosis (DKA) and compared them to urinary ketone measurements by dipstick. Persistent elevations of serum beta-OHB were seen in six patients when the urine became cle...
journal_title:Endocrine research
pub_type: 杂志文章
doi:10.1081/erc-100107168
更新日期:2001-02-01 00:00:00
abstract::The prostate gland of humans and other animals has the unique function of accumulating and secreting extraordinarily high levels of citrate. The prostate secretory epithelial cells synthesize citrate which, due to a limiting mitochondrial (m-) aconitase, accumulates rather than being oxidized. Thus citrate is essentia...
journal_title:Endocrine research
pub_type: 杂志文章
doi:10.1080/07435800009040143
更新日期:2000-02-01 00:00:00
abstract::There is controversy concerning the effects of progestins on bone. Norethindrone acetate (NETA) is synthetic progesterone that also has estrogenic and androgenic effects. We tested its effects on hormone levels, lipids and biochemical markers of bone turnover in postmenopausal women who were on estrogen replacement th...
journal_title:Endocrine research
pub_type: 杂志文章
doi:10.1081/erc-100107870
更新日期:2001-11-01 00:00:00
abstract:AIMS/HYPOTHESIS:Glucose tolerance progressively declines with age, and there is a high prevalence of type 2 diabetes in the elderly people. Previous studies have reported the sex differences in risk for type 2 diabetes, especially in the elderly people, whereas reasons for these sex differences remain poorly understood...
journal_title:Endocrine research
pub_type: 杂志文章
doi:10.3109/07435800.2015.1124437
更新日期:2016-08-01 00:00:00
abstract:UNLABELLED:It remains difficult to pre-operatively differentiate follicular carcinoma and adenoma even under intraoperative investigations including histopathologic diagnosis of frozen sections. METHODS:We retrospectively compared dual phase thallium (Tl-201) thyroid scan and fine-needle aspiration (FNA) cytology to d...
journal_title:Endocrine research
pub_type: 杂志文章
doi:10.1081/erc-120025036
更新日期:2003-08-01 00:00:00
abstract::We have recently reported on the activities of glucose-6-phosphate dehydrogenase (G6PD), hexokinase (HK) and carbonic anhydrase I (CA-I) and II (CA-II) isoenzymes obtained from erythrocytes of healthy subjects and untreated patients with hyperthyroid diseases. Also, erythrocyte zinc concentrations were measured. Red b...
journal_title:Endocrine research
pub_type: 杂志文章
doi:10.1081/erc-120004538
更新日期:2002-02-01 00:00:00
abstract::Atrial natriuretic peptide (ANP) is released from the atria and acts to regulate blood volume and pressure. The release of ANP appears to be stimulated by atrial distension, initiated by stretch on the cardiocytes. The purpose of the present study was to develop an assay that would allow for the detection of ANP relea...
journal_title:Endocrine research
pub_type: 杂志文章
doi:10.1080/07435809009033011
更新日期:1990-01-01 00:00:00
abstract::A comparative study (n = 20) of serum levels of leutinizing hormone (LH) and testosterone (T) between male trained athletes (high-school students, 16-18 years old) living in North and South Shouna in the Jordan Valley (JV), 320-360 meters below sea level, and those living in Ramtha and Irbid, 550-650 meters above sea ...
journal_title:Endocrine research
pub_type: 杂志文章
doi:10.1081/erc-100107165
更新日期:2001-02-01 00:00:00
abstract::We have previously reported that the protein kinase C ligand 12-O-tetradecanoyphorbol-13-acetate (TPA) inhibited the angiotensin II (AII) stimulated CYP11B2 gene expression in the adrenocortical H295R cell line. Here we report that TPA increased the level of phospho-p44/42 MAPK but AII did not. The MEK1 inhibitor PD98...
journal_title:Endocrine research
pub_type: 杂志文章
doi:10.1081/erc-200044048
更新日期:2004-11-01 00:00:00
abstract::Maternal smoking is considered to be a risk factor for low birth weight. It is hypothesized that alteration in leptin concentration may be associated with reduced fetal growth. In this study, we assess the effect of smoking during pregnancy on maternal and neonatal serum leptin concentrations, and also on breast milk ...
journal_title:Endocrine research
pub_type: 杂志文章
doi:10.1080/07435800500371748
更新日期:2005-01-01 00:00:00
abstract::The CYP11B2 gene encodes aldosterone synthase, a cytochrome P450 (P450aldo) expressed in high levels in the adrenal zona glomerulosa. While the primary physiologic regulators of aldosterone production are circulating angiotensin II (Ang II) and potassium (K+) the action of these agents on CYP11B2 gene transcription ha...
journal_title:Endocrine research
pub_type: 杂志文章
doi:10.1080/07435809609043735
更新日期:1996-11-01 00:00:00
abstract::There are several published reports on the prevalence of low vitamin D levels in otherwise healthy Indian population. Vitamin D deficiency has shown variable effect on muscle performance and strength but there is paucity of data on the effect of vitamin D deficiency on muscle energy metabolism. The present study was p...
journal_title:Endocrine research
pub_type: 临床试验,杂志文章
doi:10.3109/07435800.2013.865210
更新日期:2014-01-01 00:00:00
abstract::The enzyme, 3 beta-hydroxysteroid dehydrogenase/delta 5-4 isomerase (3 beta-HSD) is an essential element in the biosynthetic pathway for potent adrenal steroid hormones that appear to regulate maturation of many tissues in utero and are critical for homeostasis after birth. The results of prior studies are suggestive ...
journal_title:Endocrine research
pub_type: 杂志文章
doi:10.3109/07435809509030422
更新日期:1995-02-01 00:00:00
abstract::The effect of crowding on the pituitary-gonadal axis was studied in adult male rats. Crowding reduced body weight gain, did not alter relative adrenal weight and increased relative testis weight. Neither basal levels of corticosterone nor its response to acute stress were altered by crowding. Likewise, LH secretion wa...
journal_title:Endocrine research
pub_type: 杂志文章
doi:10.1080/07435808609035431
更新日期:1986-01-01 00:00:00
abstract::It is now well documented that obesity is associated with a chronic low-grade inflammatory state. Levels of high-sensitivity C-reactive protein, a marker of systemic inflammation and a mediator of atherothrombotic disease, have been shown to correlate with cardiovascular disease risk. Our objective was to evaluate the...
journal_title:Endocrine research
pub_type: 临床试验,杂志文章
doi:10.1081/erc-200033541
更新日期:2004-08-01 00:00:00
abstract:PURPOSE:Primary hyperparathyroidism (PHPT) has been associated with increased incidence of morbidity and mortality of the cardiovascular system. The pathogenetic mechanisms underlying this association are still not completely clear. A disintegrin and metalloproteinase with thrombospondin-like motifs (ADAMTS) play a cri...
journal_title:Endocrine research
pub_type: 杂志文章
doi:10.1080/07435800.2017.1368543
更新日期:2018-02-01 00:00:00
abstract::The question of whether ethanol's (ETOH's) known suppressive effect on serum luteinizing hormone (LH) could be mediated directly at the anterior pituitary level was addressed by examining the effects of ETOH in vitro on release of LH from cultured male rat pituitary cells. The impact of added ethanol concentrations ra...
journal_title:Endocrine research
pub_type: 杂志文章
doi:10.3109/07435808909042748
更新日期:1989-01-01 00:00:00
abstract::Several lines of evidence have suggested that the nuclear receptor Steroidogenic Factor-1 (SF-1 or Ad4BP) may be directly involved in the cAMP-dependent regulation of steroid hydroxylase genes in adrenocortical cells. In the bovine CYP17 gene, which encodes the cytochrome P450 17alpha-hydroxylase, an SF-1 site is pres...
journal_title:Endocrine research
pub_type: 杂志文章
doi:10.3109/07435809809032638
更新日期:1998-08-01 00:00:00
abstract::Pertussis toxin (PT) and cholera toxin (CT) have been shown to modulate lactogenic hormone-stimulated Nb2 cell mitogenesis, a lactogen-dependent cell line. As both toxins have been shown to alter guanylate cyclase activity in other cell systems, cyclic guanosine monophosphate (cGMP) analogs, 8-bromo or dibutyryl cGMP,...
journal_title:Endocrine research
pub_type: 杂志文章
doi:10.3109/07435809209035926
更新日期:1992-01-01 00:00:00
abstract::Two CYP21 genes, the active CYP21 and the pseudogene, CYP21P, also pairs of duplicated genes including the XA, XB, XB-S; YA, YB; and ZA, ZB are arranged in tandem next to the serum complement C4 genes (C4A and C4B). In this report, we have analyzed the influence of some DNA sequences within the C4A/CYP21P region on th...
journal_title:Endocrine research
pub_type: 杂志文章
doi:10.3109/07435809809032659
更新日期:1998-08-01 00:00:00
abstract:BACKGROUND:Tetraiodothyroacetic acid (tetrac) and its nanoparticulate formulation (Nanotetrac) act at a cell surface receptor to block angiogenesis and tumor cell proliferation. OBJECTIVE:The complex anti-angiogenic properties of tetrac and Nanotetrac caused us to search in the literature and in certain of our unpubli...
journal_title:Endocrine research
pub_type: 杂志文章,评审
doi:10.3109/07435800.2013.778865
更新日期:2013-01-01 00:00:00
abstract::The adrenal cortex is a complex tissue comprising different cell types, including endocrine, stromal, nerve, perivascular, and endothelial cells. The pituitary hormone ACTH controls the coordinated development of the vasculature and the endocrine tissue mass. This suggests that paracrine secretions between steroidogen...
journal_title:Endocrine research
pub_type: 杂志文章
doi:10.1081/erc-200043623
更新日期:2004-11-01 00:00:00
abstract::We sought to determine the effect of maternal infections on the fetal hypothalamic-pituitary-adrenal axis. Umbilical cord blood was collected at vaginal delivery after labor (24-44 wk. gestation) from 361 infants of women having normal pregnancy ( apart from preterm delivery in some) and 110 infants of women diagnosed...
journal_title:Endocrine research
pub_type: 杂志文章
doi:10.1080/07435809909066145
更新日期:1999-08-01 00:00:00