Neuropeptide Y suppresses epileptiform discharges by regulating AMPA receptor GluR2 subunit in rat hippocampal neurons.

Abstract:

:The present study aimed to investigate the effects of neuropeptide Y (NPY) on the α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA) receptor glutamate receptor 2 (GluR2) subunit in epileptiform discharge hippocampal neurons. Hippocampal neurons were harvested from neonatal Sprague‑Dawley rats aged <24 h and primarily cultured in vitro. At day 12 following culture, hippocampal neurons were divided into the following groups: Control, Mg2+‑free, NPY+Mg2+‑free and BIBP3226+NPY+Mg2+‑free. The action potential of neurons was measured using the whole cell patch clamp technique in the control, Mg2+‑free and NPY+Mg2+‑free groups. AMPA current (IAMPA) was detected and peak current density was calculated in each group. Alterations in total protein and phosphorylation of the GluR2 subunit were detected by western blot analysis, and GluR2 mRNA expression levels were detected by reverse transcription‑quantitative polymerase chain reaction, in each group. The whole cell patch clamp technique demonstrated an abnormal action potential in the Mg2+‑free group. The frequency and amplitude of the action potential were significantly greater in the Mg2+‑free group compared with the control group, and significantly reduced in the NPY+Mg2+‑free group compared with the Mg2+‑free group (P<0.05). In the Mg2+‑free group, compared with the control group, peak current density was significantly reduced (P<0.05), GluR2 subunit protein content was slightly reduced (P>0.05), phosphorylation levels of GluR2 subunit were significantly greater (P<0.05) and GluR2 mRNA was significantly reduced (P<0.05). In the NPY+Mg2+‑free group, compared with the Mg2+‑free group, peak current density was significantly greater (P<0.05), phosphorylation levels of GluR2 subunit were significantly reduced (P<0.05) and GluR2 mRNA expression was significantly greater (P<0.05). In the BIBP3226+NPY+Mg2+‑free group, compared with the NPY+Mg2+‑free group, peak current density was significantly reduced (P<0.05), phosphorylation levels of GluR2 subunit were significantly greater (P<0.05) and GluR2 mRNA expression was significantly reduced (P<0.05). After 3 h of treatment with Mg2+‑free extracellular fluid, epileptiform discharge was detected in the cells. NPY inhibited the discharge and its underlying mechanism may be that epileptiform discharge suppressed the function of the AMPA receptor GluR2 subunit. NPY relieved the inhibition of the GluR2 subunit via the Y1 receptor. This may provide a novel direction for future studies on the pathogenesis and treatment of epilepsy.

journal_name

Mol Med Rep

authors

Bu W,Zhao WQ,Li WL,Dong CZ,Zhang Z,Li QJ

doi

10.3892/mmr.2017.6567

subject

Has Abstract

pub_date

2017-07-01 00:00:00

pages

387-395

issue

1

eissn

1791-2997

issn

1791-3004

journal_volume

16

pub_type

杂志文章
  • MYH rs3219476 and rs3219472 polymorphisms and risk of cholangiocarcinoma.

    abstract::Cholangiocarcinoma (CCA) is a rare but devastating malignancy. Up to 90% of patients presenting with CCA have no identifiable risk factors. The base excision repair (BER) pathway has a principal role in the repair of mutations caused by oxidized or reduced bases. The MutY homolog (MUTYH, MYH) is one of the key protein...

    journal_title:Molecular medicine reports

    pub_type: 杂志文章

    doi:10.3892/mmr.2012.1175

    authors: You SH,Wang X,Huang S,Wang M,Ji GZ,Xia JR,Fan ZN

    更新日期:2013-01-01 00:00:00

  • Prognostic factors for renal allograft survival in patients with immunoglobulin A nephropathy: a case control study.

    abstract::The renal allograft survival rates of patients with immunoglobulin A nephropathy (IgAN), and patients with or without other glomerular diseases, have yet to be fully elucidated. In this study, the clinicopathological factors associated with long-term allograft survival for the prognosis of renal allograft recipients w...

    journal_title:Molecular medicine reports

    pub_type: 杂志文章

    doi:10.3892/mmr.2014.1954

    authors: Guo JQ,Song BL,Wu ZX,Wu WZ,Luo LT,Chen XW,He FQ,Zheng ZY,Yang SL,Tan JM

    更新日期:2014-04-01 00:00:00

  • Tumor budding is a significant indicator of a poor prognosis in lung squamous cell carcinoma patients.

    abstract::Lung cancer is a leading cause of cancer mortality worldwide and patients occasionally develop local recurrence or distant metastasis soon after curative resection. Reports of new therapeutic strategies for lung squamous cell carcinoma (SqCC) are extremely rare, while selective anti...

    journal_title:Molecular medicine reports

    pub_type: 杂志文章

    doi:10.3892/mmr.2012.1048

    authors: Masuda R,Kijima H,Imamura N,Aruga N,Nakamura Y,Masuda D,Takeichi H,Kato N,Nakagawa T,Tanaka M,Inokuchi S,Iwazaki M

    更新日期:2012-11-01 00:00:00

  • Hypoxia in utero increases the risk of pulmonary hypertension in rat offspring and is associated with vasopressin type‑2 receptor upregulation.

    abstract::Pulmonary hypertension (PH) in newborns and adults is a disease that can lead to right heart failure and result in a shorter lifespan. PH was induced by maintaining pregnant rats in a hypoxic chamber for 4 h twice a day, from days 7‑21 of pregnancy. Hypoxia was confirmed by a decrease in the partial pressure of oxygen...

    journal_title:Molecular medicine reports

    pub_type: 杂志文章

    doi:10.3892/mmr.2020.11533

    authors: Ding H,Luo Y,Hu K,Huang H,Liu P,Xiong M,Zhu L,Yi J,Xu Y

    更新日期:2020-11-01 00:00:00

  • Formononetin attenuates monocrotaline‑induced pulmonary arterial hypertension via inhibiting pulmonary vascular remodeling in rats.

    abstract::Pulmonary arterial hypertension (PAH) is a life‑threatening disease induced by the excessive proliferation and reduced apoptosis of pulmonary artery smooth muscle cells (PASMCs). Formononetin (FMN) is a natural isoflavone with numerous cardioprotective properties, which can inhibit the proliferation and induce the apo...

    journal_title:Molecular medicine reports

    pub_type: 杂志文章

    doi:10.3892/mmr.2019.10781

    authors: Cai C,Xiang Y,Wu Y,Zhu N,Zhao H,Xu J,Lin W,Zeng C

    更新日期:2019-12-01 00:00:00

  • The roles of TRIO and F-actin-binding protein in glioblastoma cells.

    abstract::TRIO and F-actin-binding protein (TrioBP), which was initially discovered as a binding partner of Trio and F‑actin, is a critical factor associated with hearing loss in humans. However, the function of TrioBP in cancer has not been investigated. In the present study, TrioBP expression was indicated to be highly elevat...

    journal_title:Molecular medicine reports

    pub_type: 杂志文章

    doi:10.3892/mmr.2018.8458

    authors: Lee H,Kim M,Park J,Tran Q,Hong Y,Cho H,Park S,Hong S,Brazil DP,Kim SH,Park J

    更新日期:2018-03-01 00:00:00

  • Resistance of mitochondrial DNA-depleted cells against oxidized low-density lipoprotein-induced macrophage pyroptosis.

    abstract::Oxidized low-density lipoprotein (Ox-LDL)-induced macrophage pyroptosis is critical in atherosclerosis inflammation and plaque instability. It has been reported that mitochondrial (mt)DNA-depleted (rho0) cells demonstrate resistance to apoptosis. However, little is known about the susceptibility of rho0 cells to Ox-LD...

    journal_title:Molecular medicine reports

    pub_type: 杂志文章

    doi:10.3892/mmr.2016.5077

    authors: Yan H,Li Y,Peng X,Huang D,Gui L,Huang B

    更新日期:2016-05-01 00:00:00

  • Roles and mechanisms of TRPC3 and the PLCγ/PKC/CPI-17 signaling pathway in regulating parturition.

    abstract::The aim of the current study was to investigate the role of phospholipase C (PLC)γ/protein kinase C (PKC)/C‑kinase‑activated protein phosphatase‑1 (CPI‑17) signaling pathways in uterine smooth muscle during parturition. Samples of uterine tissue were collected from pregnant patients who underwent a caesarean section f...

    journal_title:Molecular medicine reports

    pub_type: 杂志文章

    doi:10.3892/mmr.2017.7998

    authors: Chen J,Zheng D,Cui H,Liu S,Zhang L,Liu C

    更新日期:2018-01-01 00:00:00

  • Local intra‑articular injection of vascular endothelial growth factor accelerates articular cartilage degeneration in rat osteoarthritis model.

    abstract::In the pathophysiology of osteoarthritis (OA), articular cartilage degeneration exhibits a significant role. Vascular endothelial growth factor (VEGF) is considered to be an effective angiogenic factor and a crucial regulator of articular cartilage degeneration in the development of OA. Therefore, the present study ai...

    journal_title:Molecular medicine reports

    pub_type: 杂志文章

    doi:10.3892/mmr.2018.8652

    authors: Deng S,Zhou JL,Peng H,Fang HS,Liu F,Weng JQ

    更新日期:2018-05-01 00:00:00

  • Tetraspanin family identified as the central genes detected in gastric cancer using bioinformatics analysis.

    abstract::Gastric cancer has become a serious disease in the past decade. It has the second highest mortality rate among the four most common cancer types, leading to ~700,000 mortalities annually. Previous studies have attempted to elucidate the underlying biological mechanisms of gastric cancer. The present study aimed to obt...

    journal_title:Molecular medicine reports

    pub_type: 杂志文章

    doi:10.3892/mmr.2018.9360

    authors: Qi W,Sun L,Liu N,Zhao S,Lv J,Qiu W

    更新日期:2018-10-01 00:00:00

  • Long non-coding RNA RP5-833A20.1 inhibits proliferation, metastasis and cell cycle progression by suppressing the expression of NFIA in U251 cells.

    abstract::Early reports suggest that nuclear factor IA (NFIA) is important in the pathogenesis of glioma. Our previous study demonstrated that the long non‑coding RNA (lncRNA), RP5‑833A20.1, suppressed the expression of NFIA in THP‑1 macrophage-derived foam cells. However, the effect and possible mechanism of RP5‑833A20.1 on gl...

    journal_title:Molecular medicine reports

    pub_type: 杂志文章

    doi:10.3892/mmr.2016.5854

    authors: Kang CM,Hu YW,Nie Y,Zhao JY,Li SF,Chu S,Li HX,Huang QS,Qiu YR

    更新日期:2016-12-01 00:00:00

  • Protective effect of the herbal medicine Gan‑fu‑kang against carbon tetrachloride‑induced liver fibrosis in rats.

    abstract::The aim of the present study was to investigate the effect of a herbal medicine formula, Gan-fu-kang (GFK), on the treatment of liver fibrosis in rats and the mechanisms via which it exerts its effect. Liver fibrosis was induced in rats by subcutaneous injection of carbon tetrachloride (CCl4) at 0.5 mg/kg body weight,...

    journal_title:Molecular medicine reports

    pub_type: 杂志文章

    doi:10.3892/mmr.2013.1587

    authors: Zhang C,Wang Y,Chen H,Yang G,Wang S,Jiang M,Cong L,Yuan L,Li H,Jia Y

    更新日期:2013-09-01 00:00:00

  • Protective effects of ginsenoside Rg1 on aging Sca-1⁺ hematopoietic cells.

    abstract::In adults, bone hematopoietic cells are responsible for the lifelong production of all blood cells. It is affected in aging, with progressive loss of physiological integrity leading to impaired function by cellular intrinsic and extrinsic factors. However, intervention measures, which directly inhibit the aging of hem...

    journal_title:Molecular medicine reports

    pub_type: 杂志文章

    doi:10.3892/mmr.2015.3884

    authors: Zhou Y,Liu J,Cai S,Liu D,Jiang R,Wang Y

    更新日期:2015-09-01 00:00:00

  • Immunomodulatory effects of Longdan Xiegan Tang on CD4+/CD8+ T cells and associated inflammatory cytokines in rats with experimental autoimmune uveitis.

    abstract::Longdan Xiegan Tang (LXT) is a mixture of herbal extracts commonly used in traditional Chinese medicine that may exert immunomodulatory effects for the treatment of autoimmune diseases. However, the detailed mechanisms that mediate the actions of LXT are unclear. The present study induced an experimental autoimmune uv...

    journal_title:Molecular medicine reports

    pub_type: 杂志文章

    doi:10.3892/mmr.2016.5558

    authors: Tang K,Guo D,Zhang L,Guo J,Zheng F,Si J,Bi H

    更新日期:2016-09-01 00:00:00

  • Profiling lethal factor interacting proteins from human stomach using T7 phage display screening.

    abstract::The anthrax lethal factor (LF) is a zinc dependent metalloproteinase that cleaves the majority of mitogen-activated protein kinase kinases and a member of NOD-like receptor proteins, inducing cell apoptosis. Despite efforts to fully understand the Bacillus anthracis toxin components, the gastrointestinal (GI) anthrax ...

    journal_title:Molecular medicine reports

    pub_type: 杂志文章

    doi:10.3892/mmr.2016.5031

    authors: Cardona-Correa A,Rios-Velazquez C

    更新日期:2016-05-01 00:00:00

  • MicroRNA-103 suppresses glioma cell proliferation and invasion by targeting the brain-derived neurotrophic factor.

    abstract::Glioma is the most common and aggressive of malignant brain tumours. MicroRNAs (miRNAs/miRs) are involved in tumour development of various human cancers, including glioma. Therefore, miRNAs may have potential tumour diagnostic, prognostic and therapeutic values in human glioma. miR‑103 is abnormally expressed in vario...

    journal_title:Molecular medicine reports

    pub_type: 杂志文章

    doi:10.3892/mmr.2017.8282

    authors: Wang L,Liu Y,Song J

    更新日期:2018-03-01 00:00:00

  • Inhibition of autophagy by berberine enhances the survival of H9C2 myocytes following hypoxia.

    abstract::Hypoxia may induce apoptosis and autophagy to promote cardiomyocyte injury. The present study investigated the effect of berberine, a natural extract of Rhizoma Coptidis, on hypoxia‑induced autophagy and apoptosis in the H9c2 rat myocardial cell line. Expression levels of apoptosis and autophagy markers were upregulat...

    journal_title:Molecular medicine reports

    pub_type: 杂志文章

    doi:10.3892/mmr.2017.6770

    authors: Jia Z,Lin L,Huang S,Zhu Z,Huang W,Huang Z

    更新日期:2017-08-01 00:00:00

  • Aberrant expression of miR‑130a‑3p in ankylosing spondylitis and its role in regulating T‑cell survival.

    abstract::Ankylosing spondylitis (AS) is a chronic inflammatory rheumatic disease. MicroRNAs (miRNAs) are a group of endogenous small non‑coding RNAs that regulate target genes, and play a critical role in many biological processes. However, the underlying mechanism of specific miRNA, miR‑130a‑3p, in AS remains largely unknown....

    journal_title:Molecular medicine reports

    pub_type: 杂志文章

    doi:10.3892/mmr.2019.10573

    authors: Li F,Si D,Guo X,Guo N,Li D,Zhang L,Jian X,Ma J

    更新日期:2019-10-01 00:00:00

  • Effects of OsteoKing on osteoporotic rabbits.

    abstract::Heng-Gu-Gu-Shang-Yu-He-Ji, also known as OsteoKing, is used as a herbal Traditional Chinese Medicine for the treatment of bone disease, including femoral head necrosis and osteoarthritis. However, whether OsteoKing has anti-osteoporotic properties has remained to be elucidated. The purpose of the present study was the...

    journal_title:Molecular medicine reports

    pub_type: 杂志文章

    doi:10.3892/mmr.2015.3551

    authors: Dai L,Wu H,Yu S,Zhao H,Xue L,Xu M,Shen Z,Hu M

    更新日期:2015-07-01 00:00:00

  • 1,25‑Dihydroxy‑Vitamin D3 induces macrophage polarization to M2 by upregulating T‑cell Ig‑mucin‑3 expression.

    abstract::Macrophage polarization serves an important role in immune regulation that is regulated by T‑cell immunoglobulin‑mucin‑3 (Tim‑3). The objective of the present study was to explore the role of 1,25‑dihydroxy‑vitamin D3 [1,25(OH)2D3] in macrophage polarization. Plasmid transfection techniques were applied to prepare RAW...

    journal_title:Molecular medicine reports

    pub_type: 杂志文章

    doi:10.3892/mmr.2019.10047

    authors: Liang S,Cai J,Li Y,Yang R

    更新日期:2019-05-01 00:00:00

  • MicroRNA-10a silencing reverses cisplatin resistance in the A549/cisplatin human lung cancer cell line via the transforming growth factor-β/Smad2/STAT3/STAT5 pathway.

    abstract::Lung cancer is one of the primary causes of mortality worldwide and drug resistance is the key contributing factor which results in the failure of lung cancer chemotherapy. Previous studies have shown that microRNA (miR)‑10a was involved in the reversal of cisplatin (DDP) resistance in numerous types of tumors; howeve...

    journal_title:Molecular medicine reports

    pub_type: 杂志文章

    doi:10.3892/mmr.2015.3181

    authors: Sun W,Ma Y,Chen P,Wang D

    更新日期:2015-05-01 00:00:00

  • Inhibition of 6-hydroxydopamine-induced endoplasmic reticulum stress by sulforaphane through the activation of Nrf2 nuclear translocation.

    abstract::Endoplasmic reticulum (ER) stress plays a key role in the development of neurodegenerative diseases, including Parkinson's disease (PD). Sulforaphane (SF) is a natural drug derived from isothiocyanate found in cruciferous vegetables. Although there are reports indicating that SF is ...

    journal_title:Molecular medicine reports

    pub_type: 杂志文章

    doi:10.3892/mmr.2012.894

    authors: Deng C,Tao R,Yu SZ,Jin H

    更新日期:2012-07-01 00:00:00

  • Micronutrient cooperation in the suppression of HIV production in chronically and latently infected cells.

    abstract::Nutrients are known to display pharmacologic activity against viruses and to exert cooperative effects in cells. To study the influence of nutrient cooperation on HIV production in chronically infected T lymphocytes, we evaluated the individual and combined effects of nutrients on HIV-1 reverse transcriptase (RT) rele...

    journal_title:Molecular medicine reports

    pub_type: 杂志文章

    doi:10.3892/mmr_00000268

    authors: Jariwalla RJ,Gangapurkar B,Pandit A,Kalinovsky T,Niedzwiecki A,Rath M

    更新日期:2010-05-01 00:00:00

  • Liraglutide reduces hepatic glucolipotoxicity‑induced liver cell apoptosis through NRF2 signaling in Zucker diabetic fatty rats.

    abstract::The primary aim of the present study was to evaluate the effects of liraglutide on glucolipotoxicity‑induced liver cell apoptosis and the underlying mechanisms in Zucker diabetic fatty (ZDF) rats. The results revealed that liraglutide significantly decreased the body weight, hyperglycemia and hyperlipidemia of ZDF rat...

    journal_title:Molecular medicine reports

    pub_type: 杂志文章

    doi:10.3892/mmr.2018.8919

    authors: Guo J,Li C,Yang C,Li B,Wei J,Lin Y,Ye P,Hu G,Li J

    更新日期:2018-06-01 00:00:00

  • Cathepsin S regulates renal fibrosis in mouse models of mild and severe hydronephrosis.

    abstract::As a member of the cysteine protease family, cathepsin S (CTSS) serves an important role in diseases such as cancer, arthritis and atherosclerosis. Nevertheless, its role in renal fibrosis is unknown. In the present study, the effects of CTSS on renal fibrosis in mild (group M) and severe (group S) hydronephrosis were...

    journal_title:Molecular medicine reports

    pub_type: 杂志文章

    doi:10.3892/mmr.2019.10230

    authors: Yao X,Cheng F,Yu W,Rao T,Li W,Zhao S,Zhou X,Ning J

    更新日期:2019-07-01 00:00:00

  • MicroRNA‑143 targets CD44 to inhibit breast cancer progression and stem cell-like properties.

    abstract::CD44 is closely linked to breast cancer progression; however, the regulatory functions of microRNAs (miRs) in breast cancer have yet to be fully elucidated. In order to investigate the regulation of CD44 by miRs in breast cancer, the present study isolated CD44+ and CD44- breast cancer cells by flow cytometry, reveali...

    journal_title:Molecular medicine reports

    pub_type: 杂志文章

    doi:10.3892/mmr.2016.5194

    authors: Yang Z,Chen D,Nie J,Zhou S,Wang J,Tang Q,Yang X

    更新日期:2016-06-01 00:00:00

  • Bestrophin 1 gene analysis and associated clinical findings in a Chinese patient with Best vitelliform macular dystrophy.

    abstract::The aim of the present study was to investigate the clinical characteristics and the underlying genetic causes of Best vitelliform macular dystrophy (BVMD) in a sporadic case in a Chinese patient. A 10‑year‑old boy was diagnosed with BVMD; complete ophthalmic examinations were performed, including best‑corrected visua...

    journal_title:Molecular medicine reports

    pub_type: 杂志文章

    doi:10.3892/mmr.2017.7174

    authors: Lin Y,Li T,Gao H,Lian Y,Chen C,Zhu Y,Li Y,Liu B,Zhou W,Jiang H,Liu X,Zhao X,Liang X,Jin C,Huang X,Lu L

    更新日期:2017-10-01 00:00:00

  • MicroRNA‑494 inhibits nerve growth factor‑induced cell proliferation by targeting cyclin D1 in human corneal epithelial cells.

    abstract::Nerve growth factor (NGF) is expressed in the human corneal epithelium and stroma. It is an efficient therapy for human corneal ulcers caused by neurotropic disease. However, little is known about the molecular mechanism of NGF in healing human corneal epithelial diseases. Numerous microRNAs (miRNAs) are expressed in ...

    journal_title:Molecular medicine reports

    pub_type: 杂志文章

    doi:10.3892/mmr.2017.7083

    authors: Wu D,Qian T,Hong J,Li G,Shi W,Xu J

    更新日期:2017-10-01 00:00:00

  • Purple sweet potato color attenuates high fat-induced neuroinflammation in mouse brain by inhibiting MAPK and NF-κB activation.

    abstract::Purple sweet potato color (PSPC) is a natural anthocyanin pigment that is derived from purple sweet potato storage roots. PSPC possesses a variety of biological activities, including antioxidant, anti‑inflammatory and neuroprotective effects; however, the detailed effects of PSPC on high‑fat diet (HFD)‑induced neuroin...

    journal_title:Molecular medicine reports

    pub_type: 杂志文章

    doi:10.3892/mmr.2018.8440

    authors: Li J,Shi Z,Mi Y

    更新日期:2018-03-01 00:00:00

  • Upregulation of centromere protein M promotes tumorigenesis: A potential predictive target for cancer in humans.

    abstract::Centromere protein M (CENPM), a protein required for chromosome separation, is involved in in mitosis. However, little has been reported about the roles of CENPM in various types of cancer. The present study identified that the mRNA expression levels of CENPM were significantly upregulated in 14 types of human cancer ...

    journal_title:Molecular medicine reports

    pub_type: 杂志文章

    doi:10.3892/mmr.2020.11461

    authors: Liu Y,Yu W,Ren P,Zhang T

    更新日期:2020-11-01 00:00:00