Allosteric regulation of the calcium-sensing receptor in obese individuals.

Abstract:

:We have previously reported that the calcium-sensing receptor (CaSR) plays an important role in modulating lipid metabolism under low calcium conditions. The aim of this study was to identify possible regulators of CaSR and the mechanisms of action of CaSR in obese individuals. Subcutaneous fat samples were obtained from 10 obese and 10 non-obese males undergoing elective abdominal surgery. Visceral fat pads were obtained from 12 obese and 12 non-obese male rats. Serum lipid, tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6) concentrations, as well as the gene and protein expression of CaSR in the white adipose tissue of obese subjects and rats were determined. Serum total calcium, vitamin D, parathyroid hormone (PTH) and amino acid levels in human subjects were measured. Intracellular calcium and cyclic adenosine monophosphate (cAMP) levels in rat adipocytes were measured by laser scanning confocal microscopy and ELISA, respectively. The results revealed that serum triglyceride (TG), total cholesterol (TC), low density lipoprotein-cholesterol (LDL-C), TNF-α, IL-6 and PTH levels were significantly higher in the obese individuals versus the controls. By contrast, serum vitamin D and amino acid concentrations were lower in the obese individuals versus the controls. In addition, intracellular calcium levels were higher, while cAMP levels were lower in the obese rat adipocytes compared with the control group. However, the gene and protein expression of CaSR in white adipose tissue did not differ between the obese groups and the controls. Thus, these results suggest that CaSR functions not through its expression, but rather through allosteric regulation in obese individuals.

journal_name

Int J Mol Med

authors

He Y,Perry B,Bi M,Sun H,Zhao T,Li Y,Sun C

doi

10.3892/ijmm.2013.1408

subject

Has Abstract

pub_date

2013-08-01 00:00:00

pages

511-8

issue

2

eissn

1107-3756

issn

1791-244X

journal_volume

32

pub_type

杂志文章
  • In vitro and in vivo anti-allergic activity of soy sauce.

    abstract::Soy sauce (Shoyu) is a traditional fermented seasoning of Japan and available throughout the world. Polysaccharides were obtained from dialysate of Shoyu, and these Shoyu polysaccharides (SPS) were examined for anti-allergic activity in vitro and in vivo. The SPS originated from partially-degraded polysaccharides of s...

    journal_title:International journal of molecular medicine

    pub_type: 杂志文章

    doi:

    authors: Kobayashi M,Matsushita H,Yoshida K,Tsukiyama R,Sugimura T,Yamamoto K

    更新日期:2004-11-01 00:00:00

  • A technique for capturing broad subtypes and circulating recombinant forms of HIV-1 based on anionic polymer-coated magnetic beads.

    abstract::Magnetic beads coated with an anionic polymer, poly(methyl vinyl ether-maleic anhydrate) [poly(MVE-MA)], were used in a method to capture human immunodeficiency virus type-1 (HIV-1). The beads were incubated with either HIV-1-infected cell culture medium or plasma from HIV-1 infecte...

    journal_title:International journal of molecular medicine

    pub_type: 杂志文章

    doi:10.3892/ijmm.2012.1009

    authors: Sakudo A,Ikuta K

    更新日期:2012-08-01 00:00:00

  • Thermosensitization by parthenolide in human lung adenocarcinoma A549 cells and p53- and hsp72-independent apoptosis induction via the nuclear factor-kappaB signal pathway.

    abstract::The thermo-enhancement effects of the sesquiterpene lactone parthenolide (PTL), which targets the transcription factor nuclear factor-kappaB (NF-kappaB), and hyperthermia at 40, 42 and 44 degrees C on the human lung adenocarcinoma A549 cell line were investigated in vitro. Thermotherapy using a combined treatment with...

    journal_title:International journal of molecular medicine

    pub_type: 杂志文章

    doi:

    authors: Hayashi S,Hatashita M,Hayashi A,Matsumoto H,Shioura H,Kitai R

    更新日期:2008-05-01 00:00:00

  • Overexpression of miR-200a protects cardiomyocytes against hypoxia-induced apoptosis by modulating the kelch-like ECH-associated protein 1-nuclear factor erythroid 2-related factor 2 signaling axis.

    abstract::The kelch-like ECH-associated protein 1 (Keap1)-nuclear factor erythroid 2-related factor 2 (Nrf2) signaling axis plays an important role in regulating oxidative stress in ischemic cardiomyocytes. Targeting Keap1 in order to promote Nrf2 activation is considered a potential method for protecting cardiomyocytes against...

    journal_title:International journal of molecular medicine

    pub_type: 杂志文章

    doi:10.3892/ijmm.2016.2719

    authors: Sun X,Zuo H,Liu C,Yang Y

    更新日期:2016-10-01 00:00:00

  • A novel retinoic acid analog, 4-amino-2-trifluoromethyl-phenyl retinate, inhibits gastric cancer cell growth.

    abstract::Retinoic acid (RA) analogs have been used in the treatment of a variety of cancers; however, their application is limited due to serious therapy-related sequelae. In the present study, the effects of a novel RA analog, 4-amino-2-trifluoromethyl-phenyl retinate (ATPR), on the growth of gastric cancer cells were evaluat...

    journal_title:International journal of molecular medicine

    pub_type: 杂志文章

    doi:10.3892/ijmm.2013.1574

    authors: Hu KW,Pan XH,Chen FH,Qin R,Wu LM,Zhu HG,Wu FR,Ge JF,Han WX,Yin CL,Li HJ

    更新日期:2014-02-01 00:00:00

  • Alterations in gene expression during sexual differentiation in androgen receptor knockout mice induced by environmental endocrine disruptors.

    abstract::In the present study, we aimed to explore the effect of environmental endocrine disruptors (EEDs) on sexual differentiation in androgen receptor (AR)-/-, AR+/- and AR+/+ male mice. By using a Cre-loxP conditional knockout strategy, we generated AR knockout mice. By mating flox-AR female mice with AR-Cre male mice, the...

    journal_title:International journal of molecular medicine

    pub_type: 杂志文章

    doi:10.3892/ijmm.2014.2015

    authors: Liu D,Shen L,Tao Y,Kuang Y,Cai L,Wang D,He M,Tong X,Zhou S,Sun J,Shi C,Wang C,Wu Y

    更新日期:2015-02-01 00:00:00

  • The role of gap junctions in inflammatory and neoplastic disorders (Review).

    abstract::Gap junctions are intercellular channels made of connexin proteins, mediating both electrical and biochemical signals between cells. The ability of gap junction proteins to regulate immune responses, cell proliferation, migration, apoptosis and carcinogenesis makes them attractive therapeutic targets for treating infl...

    journal_title:International journal of molecular medicine

    pub_type: 杂志文章,评审

    doi:10.3892/ijmm.2017.2859

    authors: Wong P,Laxton V,Srivastava S,Chan YW,Tse G

    更新日期:2017-03-01 00:00:00

  • Significance of heme oxygenase in prolactin-mediated cell proliferation and angiogenesis in human endothelial cells.

    abstract::Our objectives were to determine whether heme oxygenase-1 is a second messenger for prolactin-mediated angiogenesis. Endothelial cell proliferation and angiogenesis assay demonstrated that cell number and capillary formation were increased by prolactin (10 and 25 ng/ml). Both protein synthesis and mRNA analysis confir...

    journal_title:International journal of molecular medicine

    pub_type: 杂志文章

    doi:

    authors: Malaguarnera L,Pilastro MR,Quan S,Ghattas MH,Yang L,Mezentsev AV,Kushida T,Abraham NG,Kappas A

    更新日期:2002-10-01 00:00:00

  • Protective effect of geranylgeranylacetone on trinitrobenzene sulfonic acid-induced colitis in mice.

    abstract::Geranylgeranylacetone (GGA) has recently been reported to have a protective effect against ischemic, injurious and apoptotic stress in several tissues. The aim of this study was to determine the effect of GGA on colitis induced by 2,4,6-trinitrobenzene sulfonic acid (TNBS) in mice. Colitis was induced by intrarectal i...

    journal_title:International journal of molecular medicine

    pub_type: 杂志文章

    doi:

    authors: Ohkawara T,Nishihira J,Takeda H,Katsurada T,Kato K,Yoshiki T,Sugiyama T,Asaka M

    更新日期:2006-02-01 00:00:00

  • Anti-hypoglycemic and hepatocyte-protective effects of hyperoside from Zanthoxylum bungeanum leaves in mice with high-carbohydrate/high-fat diet and alloxan-induced diabetes.

    abstract::The development of diabetes mellitus (DM) is accompanied by hyperglycemia-induced oxidative stress. Hyperoside is a major bioactive component in Zanthoxylum bungeanum leaves (HZL) and is a natural antioxidant. However, the effects of HZL on DM and its mechanisms of action remain undefined. The present study evaluated ...

    journal_title:International journal of molecular medicine

    pub_type: 杂志文章

    doi:10.3892/ijmm.2017.3211

    authors: Zhang Y,Wang M,Dong H,Yu X,Zhang J

    更新日期:2018-01-01 00:00:00

  • Triptolide suppresses interleukin-1beta-induced human beta-defensin-2 mRNA expression through inhibition of transcriptional activation of NF-kappaB in A549 cells.

    abstract::The immunosuppressive effect of triptolide has been associated with suppression of T-cell activation. However, the immunosuppressive effects of triptolide on innate immunity in the epithelial barrier remain to be elucidated. Human beta-defensin (HBD)-2 is an inducible antimicrobial peptide and plays an important role ...

    journal_title:International journal of molecular medicine

    pub_type: 杂志文章

    doi:

    authors: Jang BC,Lim KJ,Choi IH,Suh MH,Park JG,Mun KC,Bae JH,Shin DH,Suh SI

    更新日期:2007-05-01 00:00:00

  • High mobility group I/Y: multifunctional chromosomal proteins causally involved in tumor progression and malignant transformation (review).

    abstract::The family of chromosomal high mobility group I/Y consists of proteins involved in gene regulation and chromatin organization. A common feature of these proteins is the presence of multiple copies of DNA binding domains (DBD), the so-called AT-hooks. Bi- or tridendate interaction of two or three DBDs with appropriatel...

    journal_title:International journal of molecular medicine

    pub_type: 杂志文章,评审

    doi:10.3892/ijmm.6.4.409

    authors: Wisniewski JR,Schwanbeck R

    更新日期:2000-10-01 00:00:00

  • Identification and characterization of epitopes from influenza A virus hemagglutinin that induce broadly cross-reactive antibodies.

    abstract::Influenza is the most common infectious disease and is caused by influenza A virus (IAV) infection. Hemagglutinin (HA) is an important viral protein of influenza A and is a major component of current IAV vaccines. The side effects associated with IAV vaccination are well studied; however, the HA‑induced immunopatholog...

    journal_title:International journal of molecular medicine

    pub_type: 杂志文章

    doi:10.3892/ijmm.2017.3344

    authors: Li Y,Hu H,Qi Z,Sun J,Li Y,Feng Q,Guo C,Wang H,Zhao P,Liu Y,Zhao X,Wang G,Zhang H,Liu L,Hu J

    更新日期:2018-03-01 00:00:00

  • HDAC inhibitor 4-phenylbutyrate preserves immature phenotype of human embryonic midbrain stem cells: implications for the involvement of DNA methyltransferase.

    abstract::Cell replacement and gene therapy using neural stem cells (NSCs) have been widely touted as a promising treatment for CNS diseases including brain tumors. Histone deacetylase (HDAC) inhibitors have been used to explore mechanisms behind the lineage-specific differentiation of NSCs a...

    journal_title:International journal of molecular medicine

    pub_type: 杂志文章

    doi:10.3892/ijmm.2011.791

    authors: Khan Z,Akhtar M,Ekström TJ

    更新日期:2011-12-01 00:00:00

  • Regulation of calmodulin-stimulated cyclic nucleotide phosphodiesterase (PDE1): review.

    abstract::The response of living cells to change in cell environment depends on the action of second messenger molecules. The two second messenger molecules cAMP and Ca2+ regulate a large number of eukaryotic cellular events. Calmodulin-stimulated cyclic nucleotide phosphodiesterase (PDE1) is one of the key enzymes involved in ...

    journal_title:International journal of molecular medicine

    pub_type: 杂志文章,评审

    doi:

    authors: Sharma RK,Das SB,Lakshmikuttyamma A,Selvakumar P,Shrivastav A

    更新日期:2006-07-01 00:00:00

  • Gender dimorphism in neutrophil priming and activation following trauma-hemorrhagic shock.

    abstract::Although gender influences T-cell, macrophage and organ functions following trauma-hemorrhage and resuscitation (T-H), it remains unknown whether it also influences polymorphonuclear cell (PMN) activity under such conditions. To study this, proestrus female and male Sprague-Dawley rats underwent trauma-hemorrhage foll...

    journal_title:International journal of molecular medicine

    pub_type: 杂志文章

    doi:

    authors: Toth B,Schwacha MG,Kuebler JF,Bland KI,Wang P,Chaudrya IH

    更新日期:2003-03-01 00:00:00

  • CGH analysis of familial non-BRCA1/BRCA2 breast tumors and mutation screening of a candidate locus on chromosome 17q11.2-12.

    abstract::Mutations in the known predisposing breast cancer genes BRCA1 and BRCA2 account for only a small proportion (<10%) of breast cancer families in the Stockholm region of Sweden. This study aims to identify novel predisposing genes in non-BRCA1/BRCA2 breast cancer families. We have employed comparative genomic hybridizat...

    journal_title:International journal of molecular medicine

    pub_type: 杂志文章

    doi:

    authors: Maguire P,Holmberg K,Kost-Alimova M,Imreh S,Skoog L,Lindblom A

    更新日期:2005-07-01 00:00:00

  • Melatonin protects brain against ischemia/reperfusion injury by attenuating endoplasmic reticulum stress.

    abstract::Endoplasmic reticulum (ER) stress plays a vital role in mediating ischemic reperfusion damage in brain. In this study, we evaluated whether melatonin inhibits ER stress in cultured neurons exposed to oxygen and glucose deprivation (OGD) and in rats subjected to transient focal cerebral ischemia. Sprague-Dawley rats we...

    journal_title:International journal of molecular medicine

    pub_type: 杂志文章

    doi:10.3892/ijmm.2018.3607

    authors: Lin YW,Chen TY,Hung CY,Tai SH,Huang SY,Chang CC,Hung HY,Lee EJ

    更新日期:2018-07-01 00:00:00

  • Anti-obesity effects of boiled tuna extract in mice with obesity induced by a high-fat diet.

    abstract::The aim of this study was to examine the anti-obesity effects of boiled tuna extract in C57BL/6N mice with obesity induced by a high-fat diet (HFD). We determined the anti-obesity effects of boiled tuna extract (100, 200, or 400 mg/kg) on the progression of HFD-induced obesity for 10 weeks. The mice were divided into ...

    journal_title:International journal of molecular medicine

    pub_type: 杂志文章

    doi:10.3892/ijmm.2016.2695

    authors: Kim Y,Kwon MJ,Choi JW,Lee MK,Kim C,Jung J,Aprianita H,Nam H,Nam TJ

    更新日期:2016-10-01 00:00:00

  • Selective PCAF inhibitor ameliorates cognitive and behavioral deficits by suppressing NF-κB-mediated neuroinflammation induced by Aβ in a model of Alzheimer's disease.

    abstract::Several recent studies have reported an association between neurodegeneration and histone modifications, such as acetylation, deacetylation and methylation. In addition, questions have been raised regarding a potential functional role for the histone acetylation enzymes in β-amyloid (Aβ)-mediated neurotoxicity, partic...

    journal_title:International journal of molecular medicine

    pub_type: 杂志文章

    doi:10.3892/ijmm.2015.2099

    authors: Park SY,Kim MJ,Kim YJ,Lee YH,Bae D,Kim S,Na Y,Yoon HG

    更新日期:2015-04-01 00:00:00

  • Identification and characterization of ARHGAP27 gene in silico.

    abstract::ARHGAP1, ARHGAP2, ARHGAP3, ARHGAP4, ARHGAP5, ARHGAP6, ARHGAP7 (DLC1), ARHGAP8, ARHGAP9, ARHGAP10, ARHGAP12, ARHGAP13 (SRGAP1), ARHGAP14 (SRGAP2), ARHGAP15, ARHGAP17 (RICH1), ARHGAP18, ARHGAP19, ARHGAP20, ARHGAP21, ARHGAP22, ARHGAP23, ARHGAP24, ARHGAP25, ARHGAP26, STARD13 (DLC2), HA-1, GMIP, PARG1, RACGAP1, PIK3R1, PIK...

    journal_title:International journal of molecular medicine

    pub_type: 杂志文章

    doi:

    authors: Katoh Y,Katoh M

    更新日期:2004-11-01 00:00:00

  • MicroRNA‑20b‑5p promotes ventricular remodeling by targeting the TGF‑β/Smad signaling pathway in a rat model of ischemia‑reperfusion injury.

    abstract::Myocardial ischemic injury results from severe impairment of the coronary blood supply and may lead to metabolic and ultrastructural changes, thereby causing irreversible damage. MicroRNA (miR)‑20b‑5p has been demonstrated to be involved in malignancies of the breast, colorectum, stomach, blood and oropharynx. The pre...

    journal_title:International journal of molecular medicine

    pub_type: 杂志文章

    doi:10.3892/ijmm.2018.3695

    authors: Liang ZG,Yao H,Xie RS,Gong CL,Tian Y

    更新日期:2018-08-01 00:00:00

  • Secretogranin III may be an indicator of paraquat-induced astrocyte activation and affects the recruitment of BDNF during this process.

    abstract::Astrocyte activation has been described as a multi‑stage defensive response, which is characterized by the morphological alteration of astrocytes and the overexpression of intermediate filament proteins. However, the functional mechanism of the secretion system in activated astroglia remains unclear. It has previously...

    journal_title:International journal of molecular medicine

    pub_type: 杂志文章

    doi:10.3892/ijmm.2018.3909

    authors: Zhan X,Li F,Chu Q,Pang H

    更新日期:2018-12-01 00:00:00

  • LGR5 is required for the maintenance of spheroid-derived colon cancer stem cells.

    abstract::Colon cancer stem cells (CCSCs) are involved in colon cancer and promote tumor progression and recurrence. LGR5, a marker for intestinal stem cells (ISCs), is also considered to serve as a marker for CCSCs. However, the precise function of LGR5 in CCSCs is unclear. In this study, we demonstrated that LGR5 was highly e...

    journal_title:International journal of molecular medicine

    pub_type: 杂志文章

    doi:10.3892/ijmm.2014.1752

    authors: Chen X,Wei B,Han X,Zheng Z,Huang J,Liu J,Huang Y,Wei H

    更新日期:2014-07-01 00:00:00

  • Asiatic acid attenuates cardiac hypertrophy by blocking transforming growth factor-β1-mediated hypertrophic signaling in vitro and in vivo.

    abstract::Cardiac hypertrophy is a major cause of morbidity and mortality worldwide. Transforming growth factor-β1 (TGF-β1) signaling has been considered as a trigger causally contributing to pathological cardiac hypertrophy. Asiatic acid (AA) is a triterpenoid compound extracted from Centella asiatica and exhibits a variety of...

    journal_title:International journal of molecular medicine

    pub_type: 杂志文章

    doi:10.3892/ijmm.2014.1781

    authors: Si L,Xu J,Yi C,Xu X,Wang F,Gu W,Zhang Y,Wang X

    更新日期:2014-08-01 00:00:00

  • Apelin/APJ system: A novel therapeutic target for oxidative stress-related inflammatory diseases (Review).

    abstract::Apelin, the endogenous ligand of APJ which is a member of G protein-coupled receptors, has been shown to be expressed in a variety of tissues in vivo and to exert significant biological effects. Studies have indicated that the apelin/APJ system is involved in the regulation of a variety of physiological functions and ...

    journal_title:International journal of molecular medicine

    pub_type: 杂志文章,评审

    doi:10.3892/ijmm.2016.2544

    authors: Zhou Q,Cao J,Chen L

    更新日期:2016-05-01 00:00:00

  • IL‑18 knockout alleviates atopic dermatitis‑like skin lesions induced by MC903 in a mouse model.

    abstract::Interleukin (IL)‑18, a pro‑inflammatory cytokine, plays an important role in a number of skin diseases. The aim of the present study was to investigate the role of IL‑18 in the development of atopic dermatitis (AD). For this purpose, mice were divided into 4 groups (n=5/group) as follows: i) The wild‑type (WT) control...

    journal_title:International journal of molecular medicine

    pub_type: 杂志文章

    doi:10.3892/ijmm.2020.4630

    authors: Chen JL,Niu XL,Gao YL,Ma L,Gao XH,Chen HD,Qi RQ

    更新日期:2020-08-01 00:00:00

  • Inhibitory effect of dipeptide alcohol derivatives containing mercapto group on eukaryotic DNA polymerase alpha.

    abstract::We reported previously that a novel dipeptide alcohol, L-homoserylaminoethanol (Hse-Gly-ol), is a selective inhibitor of eukaryotic DNA polymerase epsilon (pol epsilon). The discovery suggests that the dipeptide structure could be a chemical frame for a DNA polymerase inhibitor. Therefore, we chemically synthesized 14...

    journal_title:International journal of molecular medicine

    pub_type: 杂志文章

    doi:

    authors: Kato I,Kuriyama I,Asano N,Ikeda K,Yoshida H,Mizushina Y

    更新日期:2005-10-01 00:00:00

  • Combination treatment of adipose-derived stem cells and adiponectin attenuates pulmonary arterial hypertension in rats by inhibiting pulmonary arterial smooth muscle cell proliferation and regulating the AMPK/BMP/Smad pathway.

    abstract::The present study aimed to assess the effects of therapy with adiponectin (APN) gene-modified adipose-derived stem cells (ADSCs) on pulmonary arterial hypertension (PAH) in rats and the underlying cellular and molecular mechanisms. ADSCs were successfully isolated from the rats and characterized. ADSCs were effectivel...

    journal_title:International journal of molecular medicine

    pub_type: 杂志文章

    doi:10.3892/ijmm.2017.3226

    authors: Luo L,Zheng W,Lian G,Chen H,Li L,Xu C,Xie L

    更新日期:2018-01-01 00:00:00

  • Sevoflurane inhibits the proliferation and invasion of hepatocellular carcinoma cells through regulating the PTEN/Akt/GSK‑3β/β‑catenin signaling pathway by downregulating miR‑25‑3p.

    abstract::Sevoflurane (Sevo) is one of the most frequently used volatile anesthetic agents in surgical oncology and has various effects on tumors, including inhibiting tumor growth, recurrence, and metastases; however, the molecular mechanisms are unknown. This study tried to investigate the influence of Sevo on hepatocellular ...

    journal_title:International journal of molecular medicine

    pub_type: 杂志文章

    doi:10.3892/ijmm.2020.4577

    authors: Cao Y,Lv W,Ding W,Li J

    更新日期:2020-07-01 00:00:00