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Total 20 results found since Jan 2013.

Multimerin 1 aids in the progression of ovarian cancer possibly via modulation of DNA damage response and repair pathways
Mol Cell Biochem. 2023 Feb 1. doi: 10.1007/s11010-023-04668-5. Online ahead of print.ABSTRACTOvarian cancer is one of the leading causes of deaths among women. Despite advances in the treatment regimes, a high rate of diagnosis in the advanced stage makes it almost an incurable malignancy. Thus, more research efforts are required to identify potential molecular markers for early detection of the disease and therapeutic targets to augment the survival rate of ovarian cancer patients. Previously, in this context, we identified dysregulated expression of multimerin 1 (MMRN1) in ovarian cancer. To elucidate the relationship be...
Source: Molecular and Cellular Biochemistry - February 1, 2023 Category: Biochemistry Authors: Abhinav Saini Vikrant Kumar Anil Kumar Tomar Alpana Sharma Savita Yadav Source Type: research

Streptococcus pneumoniae exerts oxidative stress, subverts antioxidant signaling and autophagy in human corneal epithelial cells that is alleviated by tert-Butylhydroquinone
AbstractStreptococcus pneumoniae is one of the leading causes of bacterial keratitis in the developing world and globally. In the current study, we have determined oxidative stress as pathogenesis ofS. pneumoniae infection in corneal tissues and human corneal epithelial cells (HCEC) and explored host immune response of HCEC towardsS. pneumoniae. We also determined whether treatment with tert-Butylhydroquinone (tBHQ), a Nrf2 inducer, could alleviate oxidative stress and reduce bacterial cytotoxicity in these cells. Oxidative stress was determined in corneal tissues of patients and HCEC by immunohistochemistry and immunofluo...
Source: Medical Microbiology and Immunology - March 24, 2022 Category: Microbiology Source Type: research

Lipotoxicity reduces DDX58/Rig-1 expression and activity leading to impaired autophagy and cell death
This study uncovers the unexpected role of immune surveillance protein DDX58/Rig-1 (DExD/H box helicase 58) in activating macroautophagy/autophagy and protecting from lipotoxicity associated with NAFLD. Here we show for the first time that DDX58 protein is significantly reduced in nonalcoholic steatohepatitis (NASH) mouse model, an aggressive form of NAFLD characterized by inflammation and fibrosis of the liver. In addition to decreased expression of DDX58, we found that DDX58 activity can be attenuated by treatments with palmitic acid (PA), a saturated fatty acid. To investigate whether PA inhibition of DDX58 is harmful t...
Source: Autophagy - May 10, 2021 Category: Cytology Authors: Karla K Frietze Alyssa M Brown Dividutta Das Raymond G Franks Jessie Lee Cunningham Michael Hayward Joseph T Nickels Source Type: research

Exercise Training Reverses Lipotoxicity-induced Cardiomyopathy by Inhibiting HMGCS2
Conclusion Our results suggest that exercise limits lipid metabolic disorder, cardiac hypertrophy, and fibrosis and aids in the prevention of lipotoxic cardiomyopathy. Exercise-mediated cardioprotection by upregulating miR-344g-5p, which targets Hmgcs2 mRNA, prohibits HMGCS2 upregulation and thus lipotoxicity.
Source: Medicine and Science in Sports and Exercise - December 19, 2020 Category: Sports Medicine Tags: BASIC SCIENCES Source Type: research

Large-Scale “OMICS” Studies to Explore the Physiopatholgy of HIV-1 Infection
In this review, we present the main large-scale experimental studies that have been performed in the HIV/AIDS field. These “omics” studies are based on several technologies including genotyping, RNA interference, and transcriptome or epigenome analysis. Due to the direct connection with disease evolution, there has been a large focus on genotyping cohorts of well-characterized patients through genome-wide association studies (GWASs), but there have also been several invitro studies such as small interfering RNA (siRNA) interference or transcriptome analyses of HIV-1–infected cells. After describing the major results ...
Source: Frontiers in Genetics - September 12, 2019 Category: Genetics & Stem Cells Source Type: research

miRNA-218 Targets Lipin-1 and Glucose Transporter Type 4 Genes in 3T3-L1 Cells Treated With Lopinavir/Ritonavir
Conclusion: 3T3-L1 cells, treated with LPV/RTV, show altered lipid content due to increased miRNA-218 levels, which affects lipin-1 mRNA. Moreover, increased miRNA-218 levels were inversely correlated with changes in GLUT-4 expression, which suggests a role for miRNA-218 in mediating the insulin resistance consequent to cART. Introduction Metabolic syndrome is a serious consequence of combined Antiretroviral Therapy (cART). HIV-associated metabolic syndrome is often accompanied by lipodystrophy (LS), the redistribution of body fat with loss of subcutaneous adipose tissue in face, limbs and buttocks, concomitant wit...
Source: Frontiers in Pharmacology - April 29, 2019 Category: Drugs & Pharmacology Source Type: research

Auranofin, an Anti-rheumatic Gold Drug, Aggravates the Radiation-Induced Acute Intestinal Injury in Mice
Conclusion In this study, we found that a non-toxic dose of auranofin significantly aggravated the severity of the radiation-induced intestinal injury. This suggests that auranofin treatment can be an independent factor that influences the risk of intestinal complications after pelvic or abdominal radiotherapy. Ethics Statement All the protocols used in this study were approved by the Institutional Animal Care and Use Committee of the Korean Institute of Radiological and Medical Sciences (IACUC permit number: KIRAMS217-0007). Author Contributions H-JL, JS, and Y-BL designed the experiments. EL and JK conducted the exp...
Source: Frontiers in Pharmacology - April 23, 2019 Category: Drugs & Pharmacology Source Type: research

SOCS and Herpesviruses, With Emphasis on Cytomegalovirus Retinitis
Christine I. Alston1,2 and Richard D. Dix1,2* 1Department of Biology, Viral Immunology Center, Georgia State University, Atlanta, GA, United States 2Department of Ophthalmology, Emory University School of Medicine, Atlanta, GA, United States Suppressor of cytokine signaling (SOCS) proteins provide selective negative feedback to prevent pathogeneses caused by overstimulation of the immune system. Of the eight known SOCS proteins, SOCS1 and SOCS3 are the best studied, and systemic deletion of either gene causes early lethality in mice. Many viruses, including herpesviruses such as herpes simplex virus and cytomega...
Source: Frontiers in Immunology - April 10, 2019 Category: Allergy & Immunology Source Type: research

IL-17A and IL-17F repair HIV-1 gp140 damaged Caco-2 cell barriers by upregulating tight junction genes
Publication date: Available online 2 April 2019Source: Microbes and InfectionAuthor(s): Fengjie Wang, Yanfang Cui, Xiuli Shen, Shuhui Wang, Gui-bo YangAbstractIt is widely accepted that impairment of the intestinal epithelial barrier from HIV/AIDS contributes significantly to microbial translocation and systemic immune activation. Such factors present potential targets for novel treatments aimed toward a functional cure. However, the extracellular mechanisms of intestinal barrier repair are poorly understood. In the current study, we investigated the abilities of IL-17A and IL-17F to repair the damaged barrier caused by HI...
Source: Microbes and Infection - April 3, 2019 Category: Infectious Diseases Source Type: research

The Per-1 short isoform inhibits de novo HIV-1 transcription in resting CD4+ T-cells.
CONCLUSION: These data together suggest that Per-1 is a novel negative regulator of HIV-1 transcription. This restrictive activity of Per-1 to HIV-1 replication may contribute HIV-1 latency in resting CD4+ T-cells. PMID: 30774045 [PubMed - as supplied by publisher]
Source: Current HIV Research - February 18, 2019 Category: Infectious Diseases Authors: Zhao L, Liu M, Ouyang J, Zhu Z, Geng W, Dong J, Xiong Y, Wang S, Zhang X, Qiao Y, Ding H, Sun H, Liang G, Shang H, Han X Tags: Curr HIV Res Source Type: research

HIV latency is reversed by ACSS2-driven histone crotonylation
We report that a previously unrecognized epigenetic modification of the HIV LTR, histone crotonylation, is a regulator of HIV latency. Reactivation of latent HIV was achieved following the induction of histone crotonylation through increased expression of the crotonyl-CoA–producing enzyme acyl-CoA synthetase short-chain family member 2 (ACSS2). This reprogrammed the local chromatin at the HIV LTR through increased histone acetylation and reduced histone methylation. Pharmacologic inhibition or siRNA knockdown of ACSS2 diminished histone crotonylation–induced HIV replication and reactivation. ACSS2 induction was highly ...
Source: Journal of Clinical Investigation - February 20, 2018 Category: Biomedical Science Authors: Guochun Jiang, Don Nguyen, Nancie M. Archin, Steven A. Yukl, Gema Méndez-Lagares, Yuyang Tang, Maher M. Elsheikh, George R. Thompson III, Dennis J. Hartigan-O’Connor, David M. Margolis, Joseph K. Wong, Satya Dandekar Source Type: research

GM ‐CSF ameliorates microvascular barrier integrity via pericyte‐derived Ang‐1 in wound healing
Abstract Skin wound healing involves complex coordinated interactions of cells, tissues, and mediators. Maintaining microvascular barrier integrity is one of the key events for endothelial homeostasis during wound healing. Vasodilation is observed after vasoconstriction, which causes blood vessels to become porous, facilitates leukocyte infiltration and aids angiogenesis at the wound‐area, postinjury. Eventually, vessel integrity has to be reestablished for vascular maturation. Numerous studies have found that granulocyte macrophage colony‐stimulating factor (GM‐CSF) accelerates wound healing by inducing recruitment ...
Source: Wound Repair and Regeneration - February 16, 2018 Category: Surgery Authors: Min Yan, Yange Hu, Min Yao, Shisan Bao, Yong Fang Tags: Original Research ‐Basic Science Source Type: research

GM ‐CSF ameliorates microvascular barrier integrity via pericytes‐derived Ang‐1 in wound healing
Abstract Skin wound healing involves complex coordinated interactions of cells, tissues, and mediators. Maintaining microvascular barrier integrity is one of the key events for endothelial homeostasis during wound healing. Vasodilation is observed after vasoconstriction, which causes blood vessels to become porous, facilitates leukocyte infiltration and aids angiogenesis at the wound‐area, postinjury. Eventually, vessel integrity has to be reestablished for vascular maturation. Numerous studies have found that granulocyte macrophage colony‐stimulating factor (GM‐CSF) accelerates wound healing by inducing recruitment ...
Source: Wound Repair and Regeneration - February 16, 2018 Category: Surgery Authors: Min Yan, Yange Hu, Min Yao, Shisan Bao, Yong Fang Tags: Original Research ‐Basic Science Source Type: research

GM ‐CSF Ameliorates Micro‐vascular Barrier Integrity via Pericytes Derived Ang‐1 in Wound Healing
Conclusions: Our data indicate that GM‐CSF ameliorates micro‐vascular barrier integrity via pericyte derived Ang‐1 during wound healing. This article is protected by copyright. All rights reserved.
Source: Wound Repair and Regeneration - January 12, 2018 Category: Surgery Authors: Min Yan, Yange Hu, Min Yao, Shisan Bao, Yong Fang Tags: Original Research ‐Basic Science Source Type: research