AI Article Synopsis
Article Abstract
Mixed findings regarding the effects of whole-body heat stress on central blood volume have been reported. This study evaluated the hypothesis that heat stress reduces central blood volume and alters blood volume distribution. Ten healthy experimental and seven healthy time control (i.e. non-heat stressed) subjects participated in this protocol. Changes in regional blood volume during heat stress and time control were estimated using technetium-99m labelled autologous red blood cells and gamma camera imaging. Whole-body heating increased internal temperature (> 1.0 degrees C), cutaneous vascular conductance (approximately fivefold), and heart rate (52 +/- 2 to 93 +/- 4 beats min(-1)), while reducing central venous pressure (5.5 +/- 07 to 0.2 +/- 0.6 mmHg) accompanied by minor decreases in mean arterial pressure (all P < 0.05). The heat stress reduced the blood volume of the heart (18 +/- 2%), heart plus central vasculature (17 +/- 2%), thorax (14 +/- 2%), inferior vena cava (23 +/- 2%) and liver (23 +/- 2%) (all P
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2375541 | PMC |
| http://dx.doi.org/10.1113/jphysiol.2007.143057 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
3-HKA Promotes Vascular Remodeling After Stroke by Modulating the Activation of A1/A2 Reactive Astrocytes.
Adv Sci (Weinh)
January 2025
Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, 100070, China.
Ischemic stroke is the most common cerebrovascular disease and the leading cause of permanent disability worldwide. Recent studies have shown that stroke development and prognosis are closely related to abnormal tryptophan metabolism. Here, significant downregulation of 3-hydroxy-kynurenamine (3-HKA) in stroke patients and animal models is identified.
View Article and Find Full Text PDFSuction tube uterine tamponade versus uterine balloon tamponade for treatment of refractory postpartum hemorrhage: A randomized clinical feasibility trial.
Int J Gynaecol Obstet
January 2025
Effective Care Research Unit, University of the Witwatersrand and Walter Sisulu University, East London, South Africa.
Objective: To compare low-cost "Suction Tube Uterine Tamponade" (STUT) treatment for refractory postpartum hemorrhage (PPH) with uterine balloon tamponade (UBT) using a randomized feasibility study.
Methods: After verbal assent, we allocated participants with refractory PPH by randomly ordered envelopes to STUT or routine UBT at 10 hospitals in South Africa and one tertiary referral center in Colombia between January 10, 2020, and May 3, 2024. In the STUT group, we inserted a 24 FG Levin stomach tube into the uterine cavity and applied suction.
Early functional and structural hippocampal impairment in a bilateral common carotid artery stenosis mouse model.
Animal Model Exp Med
January 2025
Department of Neurology, Tianjin Neurological Institute, Tianjin Medical University General Hospital, Tianjin, China.
Background: Subcortical ischemic vascular dementia (SIVD) is a common subtype of vascular dementia. Currently, the bilateral common carotid artery stenosis (BCAS) mouse model is the most suitable SIVD rodent model. In this study, we investigated the functional and structural impairments in the hippocampus 1 month after BCAS.
View Article and Find Full Text PDFInvestigation of the Potency of KALA and REV Cell-Penetrating Peptides for In Vitro/In Vivo Delivery of an HPV Multiepitope DNA Construct.
J Pept Sci
March 2025
Department of Hepatitis and AIDS, Pasteur Institute of Iran, Tehran, Iran.
Developing human papillomavirus (HPV) therapeutic DNA vaccines requires an effective delivery system, such as cell-penetrating peptides (CPPs). In the current study, the multiepitope DNA constructs harboring the immunogenic and conserved epitopes of the L1, L2, and E7 proteins of HPV16/18 (pcDNA-L1-L2-E7 and pEGFP-L1-L2-E7) were delivered using KALA and REV CPPs with different properties in vitro and in vivo. Herein, after confirmation of the REV/DNA and KALA/DNA complexes, their stability was investigated against DNase I and serum protease.
View Article and Find Full Text PDFFollicular lymphoma (FL) outcomes are heavily influenced by host immune activity with immune anti-tumor activity mitigated by PD-1/PD-L1 pathway engagement. Combination CD20-directed therapy plus PD-1 inhibition (PD-1i) increases T-cell tumor killing and NK-cell antibody-dependent cell cytotoxicity (ADCC). Mounting evidence supports immune-priming using PD-1i before cancer-directed agents.
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!