Introduction: Chronic metabotropic glutamate receptor activation in nociceptive afferents may upregulate A-Kinase Anchoring Protein 150 (AKAP150) expression and/or function.
Objectives: To quantify transcriptional changes in AKAP150 expression and/or function after long-term mGluR5 agonist exposure, and identify transcriptional elements responsible.
Methods: Dorsal root ganglia (DRG) were dissected from Sprague-Dawley rats and cultured for biochemical analysis of AKAP150 expression after prolonged mGluR5 agonist exposure. Serum response factor (SRF) expression was knocked down through siRNA in cultures to demonstrate significance to AKAP150 upregulation. Serum response factor was also knocked down in vivo through intrathecal injections of specifically targeted oligonucleotides to demonstrate significance to hyperalgesic priming behavior in persistent mechanical hypersensitivity.
Results: Serum response factor and AKAP150 are coexpressed in TRPV1(+) DRG neurons in intact DRG. Prolonged mGluR5 agonist exposure increases SRF-dependent transcription and AKAP150 expression in a manner sensitive to protein kinase C inhibition and SRF knock down. Serum response factor in vivo knock down reduces mechanical hyperalgesic priming.
Conclusion: Serum response factor transcription plays an important role in transcriptional upregulation of AKAP and hyperalgesic priming behavior, and may contribute to the increased role of AKAP150 in the transition from acute to chronic pain.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5999410 | PMC |
| http://dx.doi.org/10.1097/PR9.0000000000000658 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Optimal functioning of hypothalamic-pituitary-adrenal axis after cessation of prednisolone therapy: a cross-sectional study in children with nephrotic syndrome.
Pediatr Nephrol
January 2025
Department of Pediatrics, Chacha Nehru Bal Chikitsalaya, Delhi, 110031, India.
Background: Hypothalamic-pituitary-adrenal (HPA) axis recovery after cessation of steroid therapy in children with nephrotic syndrome (NS) has hardly been studied in the literature.
Methods: This 22-month cross-sectional study recruited children (2-14 years) with NS, having received a minimum 3 months of prednisolone, now in remission, and off steroids for 1, 3, or 6 months. Serum cortisol-basal and stimulated (with long-acting intramuscular adrenocorticotropic hormone), and factors affecting them, were assessed.
Long-term mitochondrial and metabolic impairment in lymphocytes of subjects who recovered after severe COVID-19.
Cell Biol Toxicol
January 2025
Lab. Genetics and Molecular Bases of Complex Diseases, Health Research Institute of Hospital Clínico San Carlos (IdISSC), 28040, Madrid, Spain.
The underlying mechanisms explaining the differential course of SARS-CoV-2 infection and the potential clinical consequences after COVID-19 resolution have not been fully elucidated. As a dysregulated mitochondrial activity could impair the immune response, we explored long-lasting changes in mitochondrial functionality, circulating cytokine levels, and metabolomic profiles of infected individuals after symptoms resolution, to evaluate whether a complete recovery could be achieved. Results of this pilot study evidenced that different parameters of aerobic respiration in lymphocytes of individuals recuperated from a severe course lagged behind those shown upon mild COVID-19 recovery, in basal conditions and after simulated reinfection, and they also showed altered glycolytic capacity.
View Article and Find Full Text PDFWhat is Rheumatoid factor-from screening to personalized management.
Rheumatology (Oxford)
January 2025
The First Department of Internal Medicine, University of Occupational and Environmental Health, Japan.
The rheumatoid factor (RF) is a representative autoantibody against the crystallizable fragment (Fc) of denatured immunoglobulin (Ig) G that are primarily detected in patients with rheumatoid arthritis (RA). Although five types of tumor necrosis factor (TNF) inhibitors can be used to treat RA, no guidelines are available for selecting the appropriate inhibitor for treatment. High serum RF levels are associated with high disease activity, progressive joint destruction, life prognosis associated with organ damage, decreased treatment responsiveness to TNF inhibitors and other drugs, and low treatment retention rates.
View Article and Find Full Text PDFProlonged tamoxifen treatment induces iron deposition and ferroptosis in the liver.
FASEB J
January 2025
Department of Nutrition, Second Military Medical University, Shanghai, China.
Tamoxifen is an inhibitor of estrogen receptors and was originally developed for breast cancer therapy. Besides, tamoxifen is widely used for Cre-estrogen receptor-mediated conditional knockout in transgenic mice. However, we found that the 3-month feeding of 0.
View Article and Find Full Text PDFEvaluation of an F Protein-Based Recombinant Protein for Immunization Against Respiratory Syncytial Virus.
Viral Immunol
January 2025
Department of Microbiology, Basic Science Center, Autonomous University of Aguascalientes, Aguascalientes, Mexico.
Respiratory syncytial virus (RSV) is one of the most important etiologies of acute respiratory infections that cause bronchiolitis in children under 5 years of age. Treatments are expensive, no vaccine is available, and this is an important cause of hospitalization. Costimulatory molecules have been reported to be good inducers of antiviral type 1 immune response.
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!