AI Article Synopsis
- S-equol, a compound with estrogen-like effects, was studied to see how it affects blood vessel function and thickness in rats lacking isoflavones and estrogen.
- The study involved three groups of ovariectomized female rats: one with a regular diet (control), one without isoflavones (ID), and one without isoflavones but supplemented with S-equol (ID plus equol).
- Results showed that S-equol improved endothelial function and reduced intimal thickening in the arteries compared to the isoflavone-deficient group, highlighting its potential benefits in restoring vascular health.
Article Abstract
Background: S-equol is known as an estrogenic substance, but its ability to restore vascular endothelial function is unknown. The aim of this study was to investigate the impact of S-equol on endothelial function and intimal thickening under isoflavone- and estrogen-deficient circumstances.
Methods: Twelve-week-old female Sprague-Dawley rats were bilaterally ovariectomized and assigned to one of the 3 groups: control, isoflavone-deficient (ID), or ID plus equol (n = 12, respectively). The control group received a normal diet containing isoflavones, while ID and ID plus equol groups received isoflavones-free diet. At 16th week, subcutaneous administration of S-equol (200 μg/d) started in the ID plus equol group. At 18th week, endothelial denudation of the left common carotid artery was performed in all groups, and thoracic and carotid arteries were collected at 20th week.
Results: In thoracic artery, endothelium-dependent relaxation, cyclic guanosine monophosphate levels in the tissue, and endothelial nitric oxide (NO) synthase expression and phosphorylation were significantly higher in the groups of ID plus equol and control than in the ID. The ratio of intima to media of the injured carotid artery in the control group was the lowest.
Conclusions: Removal of dietary soy isoflavones decreased endothelium-derived NO level in ovariectomized rats. S-equol supplementation partially improved NO-related endothelial function.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1097/FJC.0000000000000220 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Protocol for differentiating hematopoietic progenitor cells from human pluripotent stem cells in chemically defined monolayer culture.
STAR Protoc
January 2025
State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China. Electronic address:
Human pluripotent stem cells (hPSCs) provide a powerful platform for generating hematopoietic progenitor cells (HPCs) and investigating hematopoietic development. Here, we present a protocol for maintaining hPSCs and inducing their differentiation into HPCs through the endothelial-to-hematopoietic transition (EHT) on vitronectin-coated plates. We outline steps for evaluating the efficiency of HPC generation and assessing their potential to differentiate into various hematopoietic lineages.
View Article and Find Full Text PDFCadmium Reduces VE-Cadherin Expression in Endothelial Cells Through Activation of the Notch Signaling Pathway.
J Biochem Mol Toxicol
January 2025
Laboratory of Translational Medicine in Microvascular Regulation, Medical Research Center, The First Affiliated Hospital of Shandong First Medical University and Shandong Provincial Qianfoshan Hospital; Shandong Provincial Key Laboratory of Medicine in Microvascular Ageing; Laboratory of Future Industry of Gene Editing in Vascular Endothelial Cells of Universities in Shandong Province, Jinan, China.
Cadmium (Cd) is a toxic heavy metal which induces vascular disorders. Previous studies suggest that Cd in the bloodstream affects vascular endothelial cells (ECs), potentially contributing to vascular-related diseases. However, the molecular mechanisms of effects of Cd on ECs remain poorly understood.
View Article and Find Full Text PDFInhibition of GPR4 Attenuates the Formation of Abdominal Aortic Aneurysm Through Inhibiting the SP-1/VEGF-A Signaling.
J Biochem Mol Toxicol
January 2025
Department of Cardiothoracic Surgery, Jingzhou Hospital Affiliated to Yangtze University, Jingzhou City, Hubei Province, China.
Abdominal aortic aneurysm (AAA) is a severe cardiovascular disease (CVD) that is partly attributable to endothelial dysfunction, inflammatory response, and angiogenesis. G protein-coupled receptor 4 (GPR4), a proton-sensitive G protein-coupled receptor that is abundantly expressed in vascular endothelial cells, has been associated with numerous physiological functions. Nevertheless, its potential involvement in the development of AAA remains unexplored.
View Article and Find Full Text PDFFunctional Characteristics of the Crosstalk Between Vocal Fold Fibroblasts and Macrophages-The Role of Vibration in Vocal Fold Inflammation.
J Voice
January 2025
Division of Phoniatrics, ENT University Hospital Graz, Medical University of Graz, Graz, Austria; Division of Physiology and Pathophysiology, Otto Loewi Research Center for Vascular Biology, Immunology and Inflammation, Medical University of Graz, Graz, Austria.
Article Synopsis
- The study explored how human vocal fold fibroblasts (hVFF) interact with macrophages in the presence of cigarette smoke extract (CSE) and vibration, focusing on vocal fold inflammation.
- Researchers cultured hVFF with CSE, applying either static or dynamic conditions, and then measured various mRNA and protein levels to assess inflammation.
- Findings revealed that vibration may reduce CSE-induced inflammatory responses in hVFF, suggesting potential mechanisms to address voice disorders linked to smoking-related inflammation.
Effect of electroacupuncture on vascular remodeling in rats with cerebral ischemia by regulating irisin based on VEGF/Akt/eNOS signaling pathway.
Brain Res Bull
January 2025
School of Rehabilitation Science, Shanghai University of Traditional Chinese Medicine, Shanghai, China; Department of Rehabilitation Medicine, Huashan Hospital, Fudan University, Shanghai, China; National Center for Neurological Disorders, Huashan Hospital, Fudan University, Shanghai, China; National Clinical Research Center for Geriatric Diseases, Huashan Hospital, Fudan University, Shanghai, China. Electronic address:
Objective: This study aimed to explore the cumulative effects and expression patterns of electroacupuncture (EA) on irisin secretion, observe the effects of EA on the recovery of neurobehavioral function and vascular remodeling after cerebral ischemia, and elucidate the mechanism by which EA promotes vascular remodeling by regulating irisin expression.
Methods: A rat model of left middle cerebral artery occlusion (MCAO) was prepared, and EA was performed. Tissue distribution and expression of irisin were determined by immunofluorescence, enzyme-linked immunosorbent assay (ELISA), and Western blotting.
Want 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!