Abstract:
:Vertebrate eyes are known to contain circadian clocks, but their regulatory mechanisms remain largely unknown. To address this, we used a cell line from human retinal pigment epithelium (hRPE-YC) with stable coexpression of reporters for molecular clock oscillations (Bmal1-luciferase) and intracellular Ca2+ concentrations (YC3.6). We observed concentration-dependent increases in cytosolic Ca2+ concentrations after treatment with histamine (1-100 µM) and complete suppression of histamine-induced Ca2+ mobilizations by H1 histamine receptor (H1R) antagonist d-chlorpheniramine (d-CPA) in hRPE-YC cells. Consistently, real-time RT-PCR assays revealed that H1R showed the highest expression among the four subtypes (H1-H4) of histamine receptors in hRPE-YC cells. Stimulation of hRPE-YC cells with histamine transiently increased nuclear localization of phosphorylated Ca2+/cAMP-response element-binding protein that regulates clock gene transcriptions. Administration of histamine also shifted the Bmal1-luciferase rhythms with a type-1 phase-response curve, similar to previous results with carbachol stimulations. Treatment of hRPE-YC cells with d-CPA or with more specific H1R antagonist, ketotifen, blocked the histamine-induced phase shifts. Furthermore, an H2 histamine receptor agonist, amthamine, had little effect on the Bmal1-luciferase rhythms. Although the function of the in vivo histaminergic system within the eye remains obscure, the present results suggest histaminergic control of the molecular clock via H1R in retinal pigment epithelial cells. Also, since d-CPA and ketotifen have been widely used (e.g., to treat allergy and inflammation) in our daily life and thus raise a possible cause for circadian rhythm disorders by improper use of antihistamines.
journal_name
Front Endocrinol (Lausanne)journal_title
Frontiers in endocrinologyauthors
Morioka E,Kanda Y,Koizumi H,Miyamoto T,Ikeda Mdoi
10.3389/fendo.2018.00108subject
Has Abstractpub_date
2018-03-19 00:00:00pages
108issn
1664-2392journal_volume
9pub_type
杂志文章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 ...
journal_title:Frontiers in endocrinology
pub_type:
doi:10.3389/fendo.2018.00615
更新日期:2018-10-18 00:00:00
abstract::The oncogene-induced senescence is emerging as a potent tumor suppressor mechanism and as a possible therapeutic target. Macroautophagy is intimately linked to the senescence condition setup, although its role has not been elucidated yet. Here, we discuss up-to-date concepts of senescence-related macroautophagy and ev...
journal_title:Frontiers in endocrinology
pub_type: 杂志文章,评审
doi:10.3389/fendo.2014.00157
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abstract::Initially identified as monomers, G protein-coupled receptors (GPCRs) can also form functional homo- and heterodimers that act as distinct signaling hubs for cellular signal integration. We previously found that the angiotensin II (Ang II) type 1 receptor (AT1R) and the prostaglandin F2α (PGF2α) receptor (FP), both im...
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pub_type: 杂志文章
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abstract::Congenital hyperinsulinism (CHI) is a heterogenous and complex disorder in which the unregulated insulin secretion from pancreatic beta-cells leads to hyperinsulinaemic hypoglycaemia. The severity of hypoglycaemia varies depending on the underlying molecular mechanism and genetic defects. The genetic and molecular cau...
journal_title:Frontiers in endocrinology
pub_type: 杂志文章,评审
doi:10.3389/fendo.2019.00111
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abstract:Background:Left ventricular (LV) diastolic dysfunction has been demonstrated to be an independent predictor of the future heart failure. Heart failure is one of the severe complications caused by overt hyperthyroidism. However, the effects of overt hyperthyroidism on diastolic dysfunction are conflicting, and little is...
journal_title:Frontiers in endocrinology
pub_type: 杂志文章
doi:10.3389/fendo.2020.605712
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abstract::Ghrelin is a peptide hormone that is acylated with a fatty acid, usually n-octanoic acid, at the third amino acid (aa) residue (usually a serine or threonine), and this acylation is known to be essential for ghrelin activity not only in mammals but also in non-mammals, such as fish. However, the modification mechanism...
journal_title:Frontiers in endocrinology
pub_type: 杂志文章
doi:10.3389/fendo.2013.00117
更新日期:2013-09-03 00:00:00
abstract::Responses to a high fat, high sucrose (HFHS) diet vary greatly among inbred strains of mice. We sought to examine the epigenetic (DNA methylation) changes underlying these differences as well as variation in weight loss when switched to a low-fat chow diet. We surveyed DNA methylation from livers of 45 inbred mouse st...
journal_title:Frontiers in endocrinology
pub_type: 杂志文章
doi:10.3389/fendo.2019.00882
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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::Given that obesity and associated disorder type II diabetes mellitus have reached epidemic proportions worldwide, the development of efficient prevention and therapeutic interventions is a global public health interest. There is now a large body of evidence suggesting that the micro-organisms colonizing the human gut,...
journal_title:Frontiers in endocrinology
pub_type: 杂志文章,评审
doi:10.3389/fendo.2019.00029
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abstract::The insulin/IGF system plays an important role in cancer progression. Accordingly, elevated levels of circulating insulin have been associated with an increased cancer risk as well as with aggressive and metastatic cancer phenotypes. Numerous studies have documented that estrogens cooperate with the insulin/IGF system...
journal_title:Frontiers in endocrinology
pub_type: 杂志文章,评审
doi:10.3389/fendo.2015.00030
更新日期:2015-03-06 00:00:00
abstract::Thyroid hormone concentrations only become sufficient to maintain a euthyroid state through appropriate stimulation by pituitary thyroid-stimulating hormone (TSH). In such a dynamic system under constant high pressure, guarding against overstimulation becomes vital. Therefore, several defensive mechanisms protect agai...
journal_title:Frontiers in endocrinology
pub_type: 杂志文章,评审
doi:10.3389/fendo.2016.00142
更新日期:2016-11-07 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::Recent studies support the hypothesis that the adverse effects of early-life adversity and transgenerational stress on neural plasticity and behavior are mediated by inflammation. The objective of the present study was to investigate the immune and behavioral programing effects of intranasal (IN) vasopressin (AVP) and...
journal_title:Frontiers in endocrinology
pub_type: 杂志文章
doi:10.3389/fendo.2016.00155
更新日期:2016-12-14 00:00:00
abstract::Obesity constitutes one of the most important metabolic diseases being associated to insulin resistance development and increased cardiovascular risk. Association between obesity and cancer has also been well established for several tumor types, such as breast cancer in post-menopausal women, colorectal, and prostate ...
journal_title:Frontiers in endocrinology
pub_type: 杂志文章,评审
doi:10.3389/fendo.2014.00065
更新日期:2014-05-01 00:00:00
abstract::A substantial body of evidence supports that the gut microbiota plays a pivotal role in the regulation of metabolic, endocrine and immune functions. In recent years, there has been growing recognition of the involvement of the gut microbiota in the modulation of multiple neurochemical pathways through the highly inter...
journal_title:Frontiers in endocrinology
pub_type: 杂志文章,评审
doi:10.3389/fendo.2020.00025
更新日期:2020-01-31 00:00:00
abstract:Objective:Inflammation plays a central role in the pathogenesis of metabolic syndrome (MetS). Cyclophilin B (CypB) can be constitutively secreted in response to inflammatory stimuli and oxidative stress, participating in tissue or systemic inflammation. We investigated the relationship between CypB and MetS in both hum...
journal_title:Frontiers in endocrinology
pub_type: 杂志文章
doi:10.3389/fendo.2017.00360
更新日期:2017-12-22 00:00:00
abstract::Thyroid hormones are crucial in normal brain development. Transient and mild thyroid hormone insufficiency in pregnancy is also associated with impaired neurodevelopment in the offspring (e.g., 3-4 IQ score loss in association with maternal free thyroxine in the lowest fifth percentile). While inadequate iodine intake...
journal_title:Frontiers in endocrinology
pub_type: 杂志文章,评审
doi:10.3389/fendo.2018.00204
更新日期:2018-04-30 00:00:00
abstract::Osteocytes are the most abundant (~95%) cells in bone with the longest half-life (~25 years) in humans. In the past osteocytes have been regarded as vestigial cells in bone, since they are buried inside the tough bone matrix. However, during the last 30 years it has become clear that osteocytes are as important as bon...
journal_title:Frontiers in endocrinology
pub_type: 杂志文章,评审
doi:10.3389/fendo.2020.00405
更新日期:2020-07-08 00:00:00
abstract::Dysnatremia is associated with increased mortality in patients with community-acquired pneumonia. SARS-COV2 (Severe-acute-respiratory syndrome caused by Coronavirus-type 2) pneumonia can be fatal. The aim of this study was to ascertain whether admittance dysnatremia is associated with mortality, sepsis, or intensive t...
journal_title:Frontiers in endocrinology
pub_type: 杂志文章
doi:10.3389/fendo.2020.599255
更新日期:2020-11-30 00:00:00
abstract::Nonapeptides play a fundamental role in the regulation of social behavior, among numerous other functions. In particular, arginine vasopressin and its non-mammalian homolog, arginine vasotocin (AVT), have been implicated in regulating affiliative, reproductive, and aggressive behavior in many vertebrate species. Where...
journal_title:Frontiers in endocrinology
pub_type: 杂志文章
doi:10.3389/fendo.2017.00195
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abstract::Non-alcoholic fatty liver disease (NAFLD) is common in patients with growth hormone deficiency (GHD). Some noninvasive techniques have been used to quantify liver fat, such as the controlled attenuation parameter (CAP). Objective: To evaluate CAP as a tool to identify liver steatosis and its relationship with differen...
journal_title:Frontiers in endocrinology
pub_type: 杂志文章
doi:10.3389/fendo.2019.00364
更新日期:2019-06-19 00:00:00
abstract::Follicle stimulating hormone (FSH) plays a key role in human reproduction through, among others, induction of spermatogenesis in men and production of estrogen in women. The function FSH is performed upon binding to its cognate receptor-follicle-stimulating hormone receptor (FSHR) expressed on the surface of target ce...
journal_title:Frontiers in endocrinology
pub_type: 杂志文章,评审
doi:10.3389/fendo.2018.00760
更新日期:2018-12-13 00:00:00
abstract::Classically, the modulation of brain function and behavior by steroid hormones was linked exclusively to secretion by peripheral endocrine glands. Subsequently, steroid actions within the brain were shown dependent upon either synthesis and secretion by peripheral organs or by production within the CNS itself using pe...
journal_title:Frontiers in endocrinology
pub_type: 杂志文章
doi:10.3389/fendo.2011.00028
更新日期:2011-09-29 00:00:00
abstract::Physiological concentrations of the green tea extract epigallocatechin-3-gallate (EGCG) caused growth inhibition in estrogen receptor α (ERα)-positive MCF7 cells that was associated with down-regulation of the ERα and reduced insulin-like growth factor binding protein-2 abundance and increased protein abundance of the...
journal_title:Frontiers in endocrinology
pub_type: 杂志文章
doi:10.3389/fendo.2014.00061
更新日期:2014-05-07 00:00:00
abstract::There is increasing evidence supporting the characterization of the pesticide DDT and its metabolite, DDE, as obesogens and metabolic disruptors. Elucidating the mechanism is critical to understanding whether the association of DDT and DDE with obesity and diabetes is in fact causal. One area of research investigating...
journal_title:Frontiers in endocrinology
pub_type: 杂志文章,评审
doi:10.3389/fendo.2019.00122
更新日期:2019-03-12 00:00:00
abstract:Objective:To evaluate whether endometrial thickness (EMT) change in response to progesterone has an effect on pregnancy outcomes in frozen-thawed embryo transfer (FET) cycles. Design:Retrospective observational study. Setting:Tertiary-care academic medical center. Participants:4465 infertile women undergoing their f...
journal_title:Frontiers in endocrinology
pub_type: 杂志文章
doi:10.3389/fendo.2020.546232
更新日期:2020-10-29 00:00:00
abstract::Interferon gamma (IFNγ) is a Th1 cytokine that is critical for innate and adaptive immunity. Toll-like receptors (TLRs) signaling pathways are critical in early host defense against invading pathogens. miR-146a has been reported to participate in the regulation of host immunity. The known mechanisms of integrations be...
journal_title:Frontiers in endocrinology
pub_type: 杂志文章
doi:10.3389/fendo.2018.00041
更新日期:2018-02-26 00:00:00
abstract::Besides its interest for diagnosis, the finding of an elevated serum AMH level in PCOS has open major pathophysiological issues. This review addresses the three most important issues: 1- the role of AMH in the disturbed folliculogenesis of PCOS; 2- the role of AMH in the gonadotropin dysregulation of PCOS and 3- the r...
journal_title:Frontiers in endocrinology
pub_type: 杂志文章,评审
doi:10.3389/fendo.2020.00641
更新日期:2020-09-09 00:00:00
abstract::Introduction: Follicular-derived differentiated thyroid carcinoma (DTC) is the most common endocrine and epithelial malignancy in children. The differences in the clinical and pathological features of pediatric vs. adult DTC could relate to a different genetic profile. Few studies are currently available in this issue...
journal_title:Frontiers in endocrinology
pub_type: 杂志文章
doi:10.3389/fendo.2019.00552
更新日期:2019-08-07 00:00:00
abstract::Objective: To clarify the role and mechanism of miR-17-92 cluster in islet beta-cell repair after streptozotocin intervention. Methods: Genetically engineered mice (miR-17-92βKO) and control RIP-Cre mice were intraperitoneally injected with multiple low dose streptozotocin. Body weight, random blood glucose (RBG), fas...
journal_title:Frontiers in endocrinology
pub_type: 杂志文章
doi:10.3389/fendo.2020.00009
更新日期:2020-01-23 00:00:00