Abstract:
:Rationale: Hypoxia induces leptin gene expression in human adipocytes via hypoxia-inducible factors (HIF-α/β). Under ambient moderate hypoxia, leptin in adipocytes is elevated for at least 14 days. Leptin is supposedly involved in the reduced food intake, increased utilization of fatty acids for energy production and possible weight loss observed at high altitudes. Literature on adiponectin and visfatin in high altitude is inconsistent with reports of elevated levels and non-elevated levels. Exercise in hypoxia studies in obese subjects have shown a significant weight loss after up to 3 weeks, but it is unclear if this effect holds up for longer time periods. Therefore, we aimed to investigate 32 obese subjects completing 52 exercise and rest sessions within 8 months at either moderate or sham hypoxia and to analyze leptin, adiponectin, and visfatin mRNA-expression at different time points of exposure. Methods: Abdominal subcutaneous fat biopsies were taken from 32 obese subjects before, after 3 months and after 8 months of intervention. Subjects were randomly divided into two groups and exercised at moderate intensity at two different study sites twice a week. The IG was exposed to normobaric hypoxia (FiO2: 14.0 ± 0.2%,) at exercise and at rest (FiO2: 12.0 ± 0.2%) and the CG to sham hypoxia. Quantitative real-time polymerase chain reaction (qPCR) was used in order to determine mRNA-levels of leptin, adiponectin, and visfatin. Results: No differences in leptin levels after 3 and 8 months compared to baseline and between groups were found. There was no significant difference regarding adiponectin or visfatin at any time point compared to baseline in the hypoxia group, but an increase after 3 months was seen in the control group at normoxia compared to the hypoxia group (adiponectin: p = 0.029 and visfatin: p = 0.014). Conclusion: In this first several months' duration randomized sham controlled hypoxia exercise and rest study with obese subjects, we found no time extended leptin mRNA-expression in subjects under hypoxia after 3 and 8 months compared to baseline levels. Moderate exercise in normoxia not in hypoxia leads to elevated adiponectin and visfatin levels after 3 months.
journal_name
Front Endocrinol (Lausanne)journal_title
Frontiers in endocrinologyauthors
Rausch LK,Hofer M,Pramsohler S,Kaser S,Ebenbichler C,Haacke S,Gatterer H,Netzer NCdoi
10.3389/fendo.2018.00615subject
Has Abstractpub_date
2018-10-18 00:00:00pages
615issn
1664-2392journal_volume
9pub_type
abstract::Introduction: Although pre-treatment with a GnRH agonist can reduce the size of adenomyosis lesions, the supra-physiological hormone level induced by controlled ovarian hyperstimulation (COH) may negate the usefulness of the GnRH agonist in patients with adenomyosis lesions, leading to continued poor outcomes in fresh...
journal_title:Frontiers in endocrinology
pub_type: 杂志文章
doi:10.3389/fendo.2020.00318
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abstract::The placenta is the chief regulator of nutrient supply to the growing embryo during gestation. As such, adequate placental function is instrumental for developmental progression throughout intrauterine development. One of the most common complications during pregnancy is insufficient growth of the fetus, a problem ter...
journal_title:Frontiers in endocrinology
pub_type: 杂志文章,评审
doi:10.3389/fendo.2018.00570
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abstract::Microtubule-associated protein tau assists in stabilizing microtubules and has been particularly implicated in Alzheimer's disease (AD). Given the importance of tau to AD pathogenesis and therapies, it is important to understand non-classic physiological functions for this protein inside and outside the central nervou...
journal_title:Frontiers in endocrinology
pub_type: 杂志文章
doi:10.3389/fendo.2020.00124
更新日期:2020-03-12 00:00:00
abstract::Context: The DICER1 syndrome is a multiple neoplasia disorder caused by germline mutations in the DICER1 gene. In DICER1 patients, aggressive congenital pituitary tumors lead to neonatal Cushing's disease (CD). The role of DICER1 in other corticotropinomas, however, remains unknown. Objective: To perform a comprehensi...
journal_title:Frontiers in endocrinology
pub_type: 杂志文章
doi:10.3389/fendo.2020.00433
更新日期:2020-07-03 00:00:00
abstract::Estetrol (E4) is a natural human estrogen present at high concentrations during pregnancy. Due to its high oral bioavailability and long plasma half-life, E4 is particularly suitable for therapeutic applications. E4 acts as a selective estrogen receptor (ER) modulator, exerting estrogenic actions on the endometrium or...
journal_title:Frontiers in endocrinology
pub_type: 杂志文章
doi:10.3389/fendo.2014.00080
更新日期:2014-05-26 00:00:00
abstract::Autoimmune thyroid diseases (AITDs) are chronic organ-specific autoimmune diseases and mainly include Graves' disease (GD) and Hashimoto's thyroiditis (HT). CD14 is an important component of the immune system as a receptor for gram-negative lipopolysaccharide (LPS). The genetic polymorphisms of CD14 have been confirme...
journal_title:Frontiers in endocrinology
pub_type: 杂志文章
doi:10.3389/fendo.2018.00811
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abstract::Anaplastic thyroid cancer is known to be the most lethal malignancy among endocrine tumors for its extremely limited survival rate after diagnosis. As a result of this poor survival prognosis, multimodal therapy is currently under investigation to address this global concern. In this reported case, the 125I seed impla...
journal_title:Frontiers in endocrinology
pub_type:
doi:10.3389/fendo.2020.00207
更新日期:2020-04-22 00:00:00
abstract::Failure of uterine vascular transformation is associated with pregnancy complications including Intra Uterine Growth Restriction (IUGR). The decidua and its immune cell populations play a key role in the earliest stages of this process. Here we investigate the hypothesis that abnormal decidualization and failure of ma...
journal_title:Frontiers in endocrinology
pub_type: 杂志文章
doi:10.3389/fendo.2019.00160
更新日期:2019-03-20 00:00:00
abstract::Background: Female overweight/obesity has been reported to be associated with compromised pregnancy outcomes in fresh embryo transfer cycles. It is unclear whether the cumulative live birth rate (CLBR) is adversely affected after all viable embryos are transferred from the first ovarian stimulation cycle. Objectives: ...
journal_title:Frontiers in endocrinology
pub_type: 杂志文章
doi:10.3389/fendo.2019.00516
更新日期:2019-08-02 00:00:00
abstract:Background:Renal function is profoundly influenced by thyroid hormone levels. This study was designed to evaluate the association between preoperative thyroid hormones and postoperative acute kidney injury (AKI) in acute type A aortic dissection (ATAAD) patients. Methods:A total of 88 patients with ATAAD who underwent...
journal_title:Frontiers in endocrinology
pub_type: 杂志文章
doi:10.3389/fendo.2020.588149
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abstract::Background: Polycystic ovary syndrome (PCOS) is a major endocrine and metabolic disorder with heterogeneous manifestations and complex etiology. As a leading cause of anovulatory infertility, the molecular diversity of the follicular microenvironment has not been fully elucidated. The aim of the present study was to i...
journal_title:Frontiers in endocrinology
pub_type: 杂志文章
doi:10.3389/fendo.2019.00821
更新日期:2019-11-26 00:00:00
abstract::The past two decades have witnessed many advances in the prevention, treatment, and control of diabetes mellitus (DM) and its complications. Increased screening has led to a greater recognition of type 2 diabetes mellitus (type 2 DM) and prediabetes; however, Hispanics/Latinos, the largest minority group in the US, ha...
journal_title:Frontiers in endocrinology
pub_type: 杂志文章,评审
doi:10.3389/fendo.2017.00298
更新日期:2017-11-10 00:00:00
abstract::Objective: To study the impact of dose reduction in MDCT images through tube current reduction or sparse sampling on the vertebral bone strength prediction using finite element (FE) analysis for fracture risk assessment. Methods: Routine MDCT data covering lumbar vertebrae of 12 subjects (six male; six female; 74.70 ±...
journal_title:Frontiers in endocrinology
pub_type: 杂志文章
doi:10.3389/fendo.2020.00442
更新日期:2020-07-28 00:00:00
abstract::Background: The number of subjects with gender dysphoria has been increasing. In general, male-to-female transsexual subjects are treated with estradiol valerate therapy. In this report, we showed the time course of ACTH and cortisol levels after estradiol valerate injection in a male subject with gender dysphoria. It...
journal_title:Frontiers in endocrinology
pub_type:
doi:10.3389/fendo.2019.00751
更新日期:2019-11-05 00:00:00
abstract::The estimated number of testicular olfactory receptors (ORs) in mammals range between 20 and 66. Previous data reported the role of hOR17-4 and mOR23 in sperm-oocyte chemiotaxis. Proteomic analysis was performed to understand which are the ORs expressed in seminal plasma. Seminal samples by four fertile men were analy...
journal_title:Frontiers in endocrinology
pub_type: 杂志文章
doi:10.3389/fendo.2017.00379
更新日期:2018-01-23 00:00:00
abstract::Background: Consistent evidence have demonstrated that patients with primary aldosteronism (PA) have higher risk of cardiovascular events to patients with essential hypertension (EH). Whether the long-term risk of mortality for PA patients is higher than EH patients is unclear. We aim to compare the long-term mortalit...
journal_title:Frontiers in endocrinology
pub_type: 杂志文章
doi:10.3389/fendo.2020.00121
更新日期:2020-03-10 00:00:00
abstract::Thyrotropin hormone (TSH) was reported to exhibit biphasic regulation of cAMP production in human thyroid slices; specifically, upregulation at low TSH doses transitioning to inhibition at high doses. We observed this phenomenon in HEK293 cells overexpressing TSH receptors (TSHRs) but in only 25% of human thyrocytes (...
journal_title:Frontiers in endocrinology
pub_type: 杂志文章
doi:10.3389/fendo.2020.00276
更新日期:2020-04-30 00:00:00
abstract::Objective: Soy and cocoa have been suggested to be beneficial for diabetes. The aim of this study was to identify the effects of soy protein, isoflavones, and cocoa on glycemic control parameters. Research design and methods: The study was a parallel, double-blind, placebo-controlled study where patients with diet or ...
journal_title:Frontiers in endocrinology
pub_type: 杂志文章
doi:10.3389/fendo.2019.00296
更新日期:2019-05-09 00:00:00
abstract::Testicular cancer represents the more frequent solid tumor affecting males aged 15-35 years. In the last decades, its incidence showed a progressive increased probably due to genetic and environmental factors. Despite exposure to some viruses such as HIV, HCV, EBV, and HPV is frequently related to cancer development, ...
journal_title:Frontiers in endocrinology
pub_type: 杂志文章
doi:10.3389/fendo.2012.00172
更新日期:2012-12-21 00:00:00
abstract::Energy balance plays an important role in the control of reproduction. However, the cellular and molecular mechanisms connecting the two systems are not well understood especially in teleosts. The hypothalamus plays a crucial role in the regulation of both energy balance and reproduction, and contains a number of neur...
journal_title:Frontiers in endocrinology
pub_type: 杂志文章,评审
doi:10.3389/fendo.2014.00036
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abstract::After decades of primarily morphological study, positional cloning of the NPHS1 gene was the landmark event that established aberrant podocyte genetics as a pivotal cause of malfunction of the glomerular filter. This ended any uncertainty whether genetic mutation plays a significant role in hereditary nephrotic syndro...
journal_title:Frontiers in endocrinology
pub_type: 杂志文章,评审
doi:10.3389/fendo.2014.00226
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abstract:INTRODUCTION:Risk of testicular germ cell tumors (TGCT) is consistently associated with a history of cryptorchidism (CO) in epidemiologic studies. Factors modifying the association may provide insights regarding etiology of TGCT and suggest a basis for individualized care of CO. To identify modifiers of the CO-TGCT ass...
journal_title:Frontiers in endocrinology
pub_type: 杂志文章
doi:10.3389/fendo.2012.00182
更新日期:2013-02-18 00:00:00
abstract::Adrenocorticotropic hormone (ACTH), and α-, β-, and γ-melanocyte-stimulating hormones (α-, β-, γ-MSH), collectively known as melanocortins, together with their receptors (melanocortin receptors), are components of an ancient modulatory system. The clinical use of ACTH in the treatment of rheumatoid arthritis started i...
journal_title:Frontiers in endocrinology
pub_type: 杂志文章,评审
doi:10.3389/fendo.2019.00683
更新日期:2019-10-09 00:00:00
abstract::Enteroendocrine cells lining the gut epithelium constitute the largest endocrine organ in the body and secrete over 20 different hormones in response to cues from ingested foods and changes in nutritional status. Not only do these hormones convey signals from the gut to the brain via the gut-brain axis, they also act ...
journal_title:Frontiers in endocrinology
pub_type: 杂志文章,评审
doi:10.3389/fendo.2018.00754
更新日期:2019-01-04 00:00:00
abstract::Germline development in vivo is dependent on the environment formed by somatic cells and the differentiation cues they provide; hence, the impact of local factors is highly relevant to the production of sperm. Knowledge of how somatic and germline cells interact is central to achieving biomedical goals relating to res...
journal_title:Frontiers in endocrinology
pub_type: 杂志文章,评审
doi:10.3389/fendo.2017.00307
更新日期:2017-11-20 00:00:00
abstract::Type 2 diabetes affects racial/ethnic minorities at an alarming rate in the US and in many countries around the world. The quality of health care provided to these groups is often suboptimal, resulting in worse patient-related outcomes when compared to those in mainstream populations. Understanding the complex biologi...
journal_title:Frontiers in endocrinology
pub_type: 杂志文章,评审
doi:10.3389/fendo.2018.00479
更新日期:2018-08-28 00:00:00
abstract::Follicle-stimulating hormone (FSH), a major regulator of spermatogenesis, has a crucial function in the development and function of the testis and it is extensively given as a fertility treatment to stimulate spermatogenesis. We analyzed the effects of different FSH preparations (α-follitropin, β-follitropin, and urof...
journal_title:Frontiers in endocrinology
pub_type: 杂志文章
doi:10.3389/fendo.2020.00401
更新日期:2020-06-18 00:00:00
abstract::Pregnancy-associated plasma protein-A (PAPP-A) and its homolog PAPP-A2 are enzymes that modulate the availability and mitogenic activity of insulin-like growth factor-I (IGF-I). PAPP-A has been implicated in numerous cancers but reports on PAPP-A2 in malignancy are non-existent. In a prospective observational study of...
journal_title:Frontiers in endocrinology
pub_type: 杂志文章
doi:10.3389/fendo.2020.00614
更新日期:2020-09-02 00:00:00
abstract::Background: Intracystic hemorrhage can present occasionally during ultrasound-guided percutaneous microwave ablation (PMWA) for cystic thyroid nodules. It can affect treatment outcome, can lead to ablation failure, and even conversion to open surgery. We aim to avoid such cases in the future by exploring their causes ...
journal_title:Frontiers in endocrinology
pub_type: 杂志文章
doi:10.3389/fendo.2020.00477
更新日期:2020-09-08 00:00:00
abstract::Previous work has shown that reduced expression of PLCXD3, a member of the phosphoinositide-specific phospholipases (PI-PLC) family, impaired insulin secretion with an unclear mechanism. In the current study, we aim to investigate the mechanism underlying this effect using human islets and rat INS-1 (832/13) cells. Mi...
journal_title:Frontiers in endocrinology
pub_type: 杂志文章
doi:10.3389/fendo.2019.00735
更新日期:2019-11-06 00:00:00