We studied the sensitivity of mitochondrial permeability transition pore (MPTP) opening to natural inductors--Ca2+ ions in the rat heart mitochondria with chronic deficiency of nigrostriatal dopamine caused by an injection of selective neurotoxin 6-hydroxidofamine in an ascending lateral bundle of the forebrain. MPTP-opening was determined specrophotometrically (lamda=520 nm) by a decrease in an optical density resulting from mitochondrial swelling. It has been shown that the rat heart mitochondria with chronic deficiency of nigrostriatal dopamine are more sensitive to Ca2+ in its physiological concentration (10(-7) mol/l) and overload (10(-6) - 10(-4) mol/l) in comparison to control animals. Thus, obtained results lead to a conclusion that an increased sensitivity of the mitochondrial permeability transition pore to calcium and mitochondrial membrane permeability may be one of the causes previously reported of disturbance in contractile function of the rat heart with chronic deficiency of nigrostriatal dopamine.
Download full-text PDF |
Source |
---|
Calcif Tissue Int
January 2025
Fondazione FIRMO Onlus, Italian Foundation for the Research On Bone Diseases, Florence, Italy.
Gaucher disease is a rare lysosomal storage disorder characterized by the accumulation of glucocerebroside lipids within multiple organs due to a deficiency of the lysosomal enzyme (acid β-glucosidase). It is an inherited autosomal recessive disease. The onset of symptoms can vary depending on disease type and severity, with milder forms presenting in adulthood.
View Article and Find Full Text PDFFront Pediatr
January 2025
Department of Pediatric Oncology, Hematology and Clinical Immunology, Medical Faculty, Center of Child and Adolescent Health, Heinrich-Heine-University and University Hospital, Duesseldorf, Germany.
Suppressors of cytokine signaling (SOCS) proteins play a critical role in regulating immune signaling pathways. Deficiency of SOCS1 leads to various autoimmune pathologies. We present two unrelated patients with distinct clinical manifestations.
View Article and Find Full Text PDFFront Pharmacol
January 2025
Department of Clinical Pharmacy, Meizhou People's Hospital (Huangtang Hospital), Meizhou, China.
Objective: Non-alcoholic steatohepatitis (NASH) is a progressive liver disease with lipid accumulation, inflammation, and liver fibrosis. Ponatinib, a third-generation tyrosine kinase inhibitors for the treatment of chronic myeloid leukemia, was found to improve metabolic disorders in mice. However, the role of ponatinib in liver inflammation and fibrosis remains to be elucidated.
View Article and Find Full Text PDFBackground: Disturbances in calcium and phosphorus homeostasis resulting from chronic kidney disease (CKD) may lead to atherosclerotic changes in blood vessels, potentially altering bone marrow perfusion. Our study aimed to investigate vertebral bone marrow perfusion using dynamic contrast-enhanced (DCE) MRI with a pharmacokinetic model. We also measured possible changes in water and fat content and bony trabeculae using T2* quantification, MR spectroscopy (MRS), and microcomputed tomography (μCT).
View Article and Find Full Text PDFBMC Nephrol
January 2025
Department of Clinical Dietetics, Medical University of Warsaw, Erazma Ciolka 27 Street, Warsaw, 01-445, Poland.
Background: Kidney transplantation (kTx) is by far the most effective method of treating end-stage renal disease, with immunosuppressive therapy being obligatory for all, except identical twins. Despite kTx being the most effective treatment for end-stage renal disease, the patients face significant morbidity. They are often burdened with diabetes, anaemia, lipid disorders, all of which pose heightened risks for cardiovascular disease.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!