AI Article Synopsis
Article Abstract
In diabetes the sensitivity of isolated rat aortae to serotonin is greatly diminished and the dose-response curve is shifted to the right. The maximal response is reduced to 37% of control, the threshold dose is approximately tenfold greater, and the ED50 is about fourfold greater than control. This decrease in sensitivity may be due, in part, to a reduction in the synthesis of prostaglandins because serotonin-induced responses in normal and diabetic arteries treated with meclofenamate are also significantly diminished. In addition, there is evidence that both receptor-operated Ca2+ and potential-operated Ca2+ channels may be impaired because the responses to norepinephrine and KCl are both dampened in diabetic aortae. The greatly diminished effect of serotonin may be a sensitive tool to study the nature of diabetes better and to monitor its development.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1159/000138069 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Targeting the insular cortex for neuropathic pain modulation: Insights into synaptic and neuronal mechanisms.
FASEB J
January 2025
Department of Physiology, Yonsei University College of Medicine, Seoul, Republic of Korea.
Neuropathic pain, caused by nerve damage, greatly affects quality of life. Recent research proposes modulating brain activity, particularly through electrical stimulation of the insular cortex (IC), as a treatment option. This study aimed to understand how IC stimulation (ICS) affects pain modulation.
View Article and Find Full Text PDFCDK1 inhibitor RO-3306 enhances BTKi potency in diffuse large B-cell lymphoma by suppressing JAK2/STAT3 signaling.
Int J Biol Macromol
January 2025
Department of Hematology, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, Huaian 223300, Jiangsu Province, PR China; Key Laboratory of Hematology of Nanjing Medical University, Nanjing 210029, Jiangsu Province, PR China. Electronic address:
Diffuse large B-cell lymphoma (DLBCL) is the most common type of lymphoma in adults, which characterized by a high degree of heterogeneity in terms of clinical presentation, molecular phenotype, and genetic features. However, approximately 30 %-40 % of patients are refractory to standard chemotherapy, and their prognosis is poor. The emergence of small-molecule inhibitors, such as Bruton's tyrosine kinase inhibitors (BTKi), has greatly improved the treatment of DLBCL; however, drug resistance associated with small-molecule inhibitors has greatly limited their clinical application.
View Article and Find Full Text PDFCTLA4-Ig reduces muscle fiber damage in a model of Duchenne muscular dystrophy by attenuating pro-inflammatory gene expression in myeloid lineage cells.
Am J Pathol
January 2025
Department of Integrative Biology and Physiology, University of California, Los Angeles, CA 90095-1606; Molecular, Cellular & Integrative Physiology Program, University of California, Los Angeles, CA 90095-1606; Department of Pathology and Laboratory Medicine, David Geffen School of Medicine at UCLA, University of California, Los Angeles, CA 90095. Electronic address:
Duchenne muscular dystrophy (DMD) is a lethal, muscle-wasting, genetic disease that is greatly amplified by an immune response to the diseased muscles. The mdx mouse model of DMD was used to test whether the pathology can be reduced by treatments with a CTLA4-Ig fusion protein that blocks costimulatory signals required for activation of T-cells. CTLA4-Ig treatments reduced mdx sarcolemma lesions and reduced the numbers of activated T-cells, macrophages and antigen presenting cells in mdx muscle and reduced macrophage invasion into muscle fibers.
View Article and Find Full Text PDFIL-21 shapes the B cell response in a context-dependent manner.
Cell Rep
January 2025
Immunology Program, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA; Immunology and Microbial Pathogenesis Program, Weill Cornell Graduate School of Medical Sciences, New York, NY 10065, USA; Gerstner Sloan Kettering Graduate School of Biomedical Sciences, New York, NY 10065, USA. Electronic address:
The T-cell-derived cytokine IL-21 is crucial for germinal center (GC) responses, but its precise role in B cell function has remained elusive. Using IL-21 receptor (Il21r) conditional knockout mice and ex vivo culture systems, we demonstrate that IL-21 has dual effects on B cells. While IL-21 induced apoptosis in a STAT3-dependent manner in naive B cells, it promoted the robust proliferation of pre-activated B cells, particularly IgG1 B cells.
View Article and Find Full Text PDFH3K4me3 Genome-Wide Distribution and Transcriptional Regulation of Transposable Elements by RNA Pol2 Deposition.
Int J Mol Sci
December 2024
Jiangsu Livestock Embryo Engineering Laboratory, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China.
Zygotic genome activation (ZGA) is critical for early embryo development and is meticulously regulated by epigenetic modifications. H3K4me3 is a transcription-permissive histone mark preferentially found at promoters, but its distribution across genome features remains incompletely understood. In this study, we investigated the genome-wide enrichment of H3K4me3 during early embryo development and embryonic stem cells (ESCs) in both sheep and mice.
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!