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Drug: Melatonin

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Total 136 results found since Jan 2013.

Melatonin receptor depletion suppressed hCG-induced testosterone expression in mouse Leydig cells.
In this study, immunolocalization assay showed that MT1 and MT2 are highly expressed in Leydig cell membrane. To understand the biological function of melatonin receptors in hCG-induced testosterone synthesis, we generated melatonin receptor knockdown cells using specific siRNA and performed testosterone detection after hCG treatment. We found that knockdown of melatonin receptors, especially MTNR1A, led to an obvious decrease (> 60%) of testosterone level. Our further study revealed that knockdown of melatonin receptors repressed expression, at both the mRNA level and the protein level, of key steroidogenic genes, su...
Source: Cellular and Molecular Biology Letters - March 28, 2019 Category: Biochemistry Authors: Gao Y, Wu X, Zhao S, Zhang Y, Ma H, Yang Z, Yang W, Zhao C, Wang L, Zhang Q Tags: Cell Mol Biol Lett Source Type: research

Expression analysis of proteasome maturation protein (POMP) gene in Liaoning Cashmere goat.
Abstract Liaoning Cashmere goat is a precious genetic resource of China. To explore the relationship between POMP and cashmere growth, we analyzed the expression of POMP. POMP encodes a hudrophilic protein which is most closely related to bos. RT-PCR showed that POMP was expressed in skin, heart, liver, spleen, lung, and kidney tissues. Real-time PCR showed that the expression of POMP was more active in the secondary hair follicles than the primary hair follicles in anagen. In situ hybridization showed that POMP was obviously expressed in the Inner Root Sheath (IRS) but no expression in Outer Root. The treatment o...
Source: Animal Biotechnology - April 6, 2019 Category: Biotechnology Authors: Piao J, Xu CL, Piao JA, Cao M, Huang N, Jin M Tags: Anim Biotechnol Source Type: research

Systems Biology Approaches and Precision Oral Health: A Circadian Clock Perspective
Conclusion Most head and neck pathologies show a broad cellular heterogeneity making it difficult to achieve an accurate diagnosis and efficient treatment (Graf and Zavodszky, 2017; Lo Nigro et al., 2017). Single cell analysis of circadian omics (Lande-Diner et al., 2015; Abraham et al., 2018), may be a crucial tool needed in the future to fully understand the circadian control of head and neck diseases. It becomes more obvious that there is only a small genetic component but a largely unknown epigenetics and/or environmental component for most of the head and neck pathologies (Moosavi and Motevalizadeh Ardekani, 2016; He...
Source: Frontiers in Physiology - April 15, 2019 Category: Physiology Source Type: research

Ku80 promotes melanoma growth and regulates antitumor effect of melatonin by targeting HIF1-α dependent PDK-1 signaling pathway
In this study, we screened a siRNA library targeting 6024 human genes and identified Ku80 as a potential therapeutic target in melanoma cells. Knockdown of Ku80 significantly suppressed melanoma cell proliferation and induced apoptosis, as well as enhanced the antitumor effect of melatonin in melanoma in vitro and in vivo. Overexpression of Ku80, however, promoted melanoma growth and increased the insensitivity of melanoma cells to melatonin. Mechanistically, we found that Ku80 bound to the PDK1 promoter and activated the transcription of PDK1. Moreover, we showed that the binding of Ku80 at the PDK-1 promoter was HIF1-α ...
Source: Redox Biology - April 22, 2019 Category: Biology Source Type: research

Inhibition of SGK1 confers vulnerability to redox dysregulation in cervical cancer
Publication date: Available online 20 May 2019Source: Redox BiologyAuthor(s): Min Wang, Yijue Xue, Lanlin Shen, Pan Qin, Xiaolin Sang, Zhiwei Tao, Jingyan Yi, Jia Wang, Pixu Liu, Hailing ChengAbstractCervical cancer has poor prognosis and patients are often diagnosed at advanced stages of the disease with limited treatment options. There is thus an urgent need for the discovery of new therapeutic strategies in cervical cancer. The activation of SGK1 has been linked to the development of various cancer types but little is known about the role of SGK1 in cervical cancer and its potential as a therapeutic target. Here we repo...
Source: Redox Biology - May 22, 2019 Category: Biology Source Type: research

Role of transforming growth factor β1 in the inhibition of gastric cancer cell proliferation by melatonin in vitro and in vivo.
Authors: Liu H, Zhu Y, Zhu H, Cai R, Wang KF, Song J, Wang RX, Zhou RX Abstract Transforming growth factor β (TGF‑β) is a polypeptide growth factor with various biological activities, and is widely distributed in various tissues. In mammals, TGF‑β has three isoforms: TGF‑β1, 2, and 3, of which TGF‑β1 is most abundant in the TGF‑β family. TGF‑β1 is closely related to the occurrence and development of tumors. A large number of previous studies have shown that melatonin can inhibit a variety of malignancies. Thus, the aim of the present study was to investigate the role of TGF‑β1 in the melatonin...
Source: Oncology Reports - June 8, 2019 Category: Cancer & Oncology Tags: Oncol Rep Source Type: research

Melatonin Attenuates LPS-Induced Acute Depressive-Like Behaviors and Microglial NLRP3 Inflammasome Activation Through the SIRT1/Nrf2 Pathway
Inflammation is a crucial component of various stress-induced responses that contributes to the pathogenesis of major depressive disorder (MDD). Depressive-like behavior (DLB) is characterized by decreased mobility and depressive behavior that occurs in systemic infection induced by Lipopolysaccharide (LPS) in experimental animals and is considered as a model of exacerbation of MDD. We assessed the effects of melatonin on behavioral changes and inflammatory cytokine expression in hippocampus of mice in LPS-induced DLB, as well as its effects on NLR Family Pyrin Domain Containing 3 (NLRP3) inflammasome activation, oxidative...
Source: Frontiers in Immunology - July 1, 2019 Category: Allergy & Immunology Source Type: research

Melatonin-Mediated Pak2 Activation Reduces Cardiomyocyte Death Through Suppressing Hypoxia Reoxygenation Injury–Induced Endoplasmic Reticulum Stress
Abstract: Cardiac reperfusion injury has been found to be associated with endoplasmic reticulum (ER) stress. Recently, p21-activated kinase 2 (Pak2) has been identified as a primary mediator of ER stress in chronic myocardial injury. Melatonin, a biological clock–related hormone, has been demonstrated to attenuate heart reperfusion burden by modulating ER stress and mitochondrial function. The aim of our study was to explore whether reperfusion-induced ER stress is modulated by melatonin through Pak2. Hypoxia reoxygenation (HR) was used in vitro to mimic reperfusion injury in cardiomyocytes. ER stress, oxidative stress...
Source: Journal of Cardiovascular Pharmacology - July 1, 2019 Category: Cardiology Tags: Original Article Source Type: research

Melatonin induces progesterone production in human granulosa-lutein cells through upregulation of StAR expression.
Abstract Steroidogenic acute regulatory protein (StAR) mediates the rate-limiting step in ovarian steroidogenesis and progesterone (P4) synthesis. Melatonin and its receptors are expressed in human granulosa cells, and have been shown to influence basal P4 production. However, previous studies addressing the regulation of StAR expression by melatonin and its impact on P4 secretion yielded contradictory results. Here, we demonstrate that melatonin upregulates StAR expression in primary cultures of human granulosa-lutein (hGL) cells obtained from women undergoing in vitro fertilization (IVF). Using pharmacological i...
Source: Aging - October 15, 2019 Category: Biomedical Science Authors: Fang L, Li Y, Wang S, Yu Y, Li Y, Guo Y, Yan Y, Sun YP Tags: Aging (Albany NY) Source Type: research

Melatonin reverses the oxidative stress and mitochondrial dysfunction caused by LETM1 silencing.
This article is protected by copyright. All rights reserved. PMID: 31777134 [PubMed - as supplied by publisher]
Source: Cell Biology International - November 26, 2019 Category: Cytology Authors: Aral C, Demirkesen S, Bircan R, Yasar Sirin D Tags: Cell Biol Int Source Type: research

GSE142476 The role of Lhx4 and Bsx homeobox genes in the rat adult pineal gland
Contributors : Henrik Hertz ; Martin F Rath ; David C Klein ; Steven L CoonSeries Type : Expression profiling by high throughput sequencingOrganism : Rattus norvegicusHomeobox genes generally encode transcription factors involved in regulating developmental processes. In the pineal gland, a brain structure devoted to nocturnal melatonin synthesis, a number of homeobox genes are also expressed postnatally; among these are the LIM homeobox 4 gene (Lhx4) and the brain ‐specific homeobox gene (Bsx). As part of a larger study, we used of siRNA technology to knock down Lhx4 or Bsx expression in cultured adult rat pinealocytes....
Source: GEO: Gene Expression Omnibus - December 21, 2019 Category: Genetics & Stem Cells Tags: Expression profiling by high throughput sequencing Rattus norvegicus Source Type: research

Melatonin attenuates doxorubicin-induced cardiotoxicity through preservation of YAP expression.
In this study, we examined the possible protective effects of melatonin on doxorubicin-induced cardiotoxicity and explored the underlying mechanisms related to this process. We found that in vitro doxorubicin treatment significantly decreased H9c2 cell viability and induced apoptosis as manifested by increased TUNEL-positive cells, down-regulation of anti-apoptotic protein Bcl-2, as well as up-regulation of pro-apoptotic protein Bax. This was associated with increased reactive oxygen species (ROS) levels and decreased mitochondrial membrane potentials (MMP). In vivo, five weeks of doxorubicin treatment significantly decrea...
Source: J Cell Mol Med - February 17, 2020 Category: Molecular Biology Authors: Li HR, Wang C, Sun P, Liu DD, Du GQ, Tian JW Tags: J Cell Mol Med Source Type: research

Melatonin induces mitochondrial apoptosis in osteoblasts by regulating the STIM1/cytosolic calcium elevation/ERK pathway
This study aimed to determine the mechanism by which melatonin inhibits the proliferation of osteoblasts.Main methodsCell viability experiment, DNA fragment detection and alkaline phosphatase (ALP) activity assays were performed to determine the effects of melatonin on the proliferation, apoptosis and differentiation of osteoblasts. We used immunofluorescence to detect the expression of STIM1 in melatonin-treated osteoblasts. STIM1 interference was achieved using a specific siRNA, and a TRPC inhibitor was used to block the influx of Ca2+. The mRNA expression was determined by RT-qPCR, and protein levels were measured by We...
Source: Life Sciences - February 21, 2020 Category: Biology Source Type: research

Melatonin ameliorates excessive PINK1/Parkin-mediated mitophagy by enhancing SIRT1 expression in granulosa cells of PCOS.
In conclusion, melatonin protects against mitochondrial injury in granulosa cells of PCOS by enhancing SIRT1 expression to inhibit excessive PINK1/Parkin-mediated mitophagy. PMID: 32343612 [PubMed - as supplied by publisher]
Source: American Journal of Physiology. Endocrinology and Metabolism - April 27, 2020 Category: Physiology Authors: Yi S, Zheng B, Zhu Y, Cai Y, Sun H, Zhou J Tags: Am J Physiol Endocrinol Metab Source Type: research

Melatonin suppresses Ti-particle-induced inflammatory osteolysis via activation of the Nrf2/Catalase signaling pathway.
Abstract Aseptic loosening induced by osteolysis is recognized as a late complication of joint replacement. Osteoclasts stimulated by Titanium (Ti) nanoparticles play a critical role in periprosthetic osteolysis. Emerging evidence indicates that melatonin, a hormone primarily synthesized by the pineal gland, has been shown an inhibitory effect on osteoclast formation. However, it is unclear whether melatonin could suppress Ti-particle-induced osteoclastogenesis and what the underlying mechanisms were involved in. Herein, we aimed to investigate the effect of melatonin on osteoclast differentiation and osteolysis s...
Source: International Immunopharmacology - August 5, 2020 Category: Allergy & Immunology Authors: Zhu X, Zhang Y, Yang H, He F, Lin J Tags: Int Immunopharmacol Source Type: research