Objective: The aim of the present study is to investigate the anti-injury and anti-inflammatory effects of dexmedetomidine (Dex) in acute liver injury induced by lipopolysaccharide (LPS) in Sprague-Dawley rats and its possible mechanism.
Methods: The acute liver injury model of male rats was established by injecting LPS into tail vein. The mean arterial pressure (MAP) of rats was recorded at 0-7 h, and lactic acid was detected at different time points. Wet/dry weight ratio (W/D) was calculated. Pathological changes of rat liver were observed by HE staining. ALT and AST levels in serum were detected. The activities of myeloperoxidase (MPO) and superoxide dismutase (SOD) in liver tissue homogenate and the levels of IL-1β and IL-18 in serum were detected by ELISA. Protein levels of Caveolin-1 (Cav-1), TLR-4 and NLRP3 in liver tissue were tested by immunohistochemistry method. The expression of Cav-1, TLR-4 and NLRP3 mRNA in liver tissue was detected by quantitative polymerase chain reaction (qPCR) to explore its related mechanism.
Results: Compared with NS group, serum lactic acid, W/D of liver tissue, MPO, SOD, IL-1β and IL-18 were significantly increased and MAP decreased significantly in LPS group and D+L group. However, compared with NS group, D group showed no significant difference in various indicators. Compared with LPS group, MPO, SOD, IL-1β and IL-18 were significantly decreased and MAP was significantly increased in D+L group. D+L group could significantly increase the level of Cav-1 protein and decrease the level of TLR-4 and NLRP3 protein in liver tissue caused by sepsis. The expression of Cav-1 mRNA was significantly up-regulated and the expression of TLR-4 and NLRP3 mRNA was inhibited in D+L group.
Conclusion: Dex pretreatment protects against LPS-induced actue liver injury via inhibiting the activation of the NLRP3 signaling pathway by up-regulating the expression of Cav-1 by sepsis.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7938455 | PMC |
| http://dx.doi.org/10.1042/BSR20204279 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Detection of H-Pylori in the Explanted Liver Tissue and the Enlarged Perihepatic Lymph Nodes of Cirrhotic Patients with Decompensated End-Stage Liver Disease Recruited for Liver Transplantation.
Asian Pac J Cancer Prev
January 2025
Department of Anatomic Pathology, Faculty of Medicine, Kasralainy, Cairo University, Cairo, Egypt.
Background: Helicobacter pylori bacteria colonize the gastric mucosa and contribute to the occurrence and development of gastrointestinal diseases. According to the WHO, H. pylori bacteria are considered class I carcinogen.
View Article and Find Full Text PDFReduction of Low-Density Lipoprotein Cholesterol by Mesenchymal Stem Cells in a Mouse Model of Exogenous Cushing's Syndrome.
Tissue Eng Regen Med
January 2025
Department of Pediatrics, College of Medicine, Ewha Womans University, Seoul, 07804, South Korea.
Background: Exogenous Cushing's syndrome, which results from prolonged glucocorticoid treatment, is associated with metabolic abnormalities. Previously, we reported the inhibitory effect of tonsil-derived mesenchymal stem cell conditioned medium (T-MSC CM) on glucocorticoid signal transduction. In this study, we investigated the therapeutic efficacy of T-MSCs in a mouse model of exogenous Cushing's syndrome.
View Article and Find Full Text PDFAn insight on the additive impact of type 2 diabetes mellitus and nonalcoholic fatty liver disease on cardiovascular consequences.
Mol Biol Rep
January 2025
Department of Pharmaceutical Sciences & Technology, BIT Mesra, Ranchi, 835215, India.
Background: Nonalcoholic fatty liver disease (NAFLD) and type 2 diabetes mellitus (T2DM) are associated with a multifactorial complicated aetiology that is often coexisting and has a strong and distinct connection with cardiovascular diseases (CVDs). In order to accomplish effective and appropriate therapeutic strategies, a deeper understanding of the bidirectional interaction between NAFLD patients, NAFLD patients with T2DM, and NAFLD patients with CVDs is required to control the concomitant rise in prevalence of these conditions worldwide. This article also aims to shed light on the epidemiology and mechanisms behind the relationship between T2DM, NAFLD and the related cardiovascular consequences.
View Article and Find Full Text PDFAge-invariant genes: multi-tissue identification and characterization of murine reference genes.
Aging (Albany NY)
January 2025
Department of Pathology, Yale University School of Medicine, New Haven, CT 06519, USA.
Studies of the aging transcriptome focus on genes that change with age. But what can we learn from age-invariant genes-those that remain unchanged throughout the aging process? These genes also have a practical application: they can serve as reference genes in expression studies. Reference genes have mostly been identified and validated in young organisms, and no systematic investigation has been done across the lifespan.
View Article and Find Full Text PDFCase 333: Masson Tumor.
Radiology
January 2025
From the Departments of Radiology (V.K., A.R., P.D.) and Pathology (J.N.), University of Arkansas for Medical Sciences, 4301 W Markham St, Little Rock, AR 72205.
A 61-year-old male patient without prior history of ophthalmologic problems presented with pain and redness in the left eye associated with slowly progressive proptosis over the previous 6 months. The patient also had diplopia in rightward and downward gaze. There was no vision loss.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!