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Total 35 results found since Jan 2013.

Inappropriate activation of the renin-angiotensin system improves cardiac tolerance to ischemia/reperfusion injury in rats with late angiotensin II-dependent hypertension
In conclusion, we confirmed improved cardiac tolerance to I/R injury in hypertensive hypertrophied rats and showed that, in the late phase of hypertension, the myocardium is in a compensated phase.
Source: Frontiers in Physiology - June 14, 2023 Category: Physiology Source Type: research

Influence of accelerated arterial ageing in growth restricted cohorts on adult-onset cardiovascular diseases
Am J Physiol Heart Circ Physiol. 2023 May 19. doi: 10.1152/ajpheart.00134.2023. Online ahead of print.ABSTRACTEpidemiologists have long documented higher risk of adult-onset cardiovascular diseases (CVD) such as stroke, hypertension and coronary artery disease) and mortality from circulatory causes in low birth weight cohorts (poor in utero substrate supply). Utero-placental insufficiency and in utero hypoxemic state induced alterations in arterial structure and compliance are important initiating factors for adult-onset hypertension. The mechanistic links between fetal growth restriction and CVD include decreased arterial...
Source: American Journal of Physiology. Heart and Circulatory Physiology - May 19, 2023 Category: Physiology Authors: Arvind Sehgal Beth J Allison F àtima Crispi Samuel Menahem Source Type: research

Pathogenesis of (smoking-related) non-communicable diseases —Evidence for a common underlying pathophysiological pattern
Non-communicable diseases, like diabetes, cardiovascular diseases, cancer, stroke, chronic obstructive pulmonary disease, osteoporosis, arthritis, Alzheimer’s disease and other more are a leading cause of death in almost all countries. Lifestyle factors, especially poor diet and tobacco consumption, are considered to be the most important influencing factors in the development of these diseases. The Western diet has been shown to cause a significant distortion of normal physiology, characterized by dysregulation of the sympathetic nervous system, renin-angiotensin aldosterone system, and immune system, as well as disrupt...
Source: Frontiers in Physiology - December 15, 2022 Category: Physiology Source Type: research

Modulation of blood pressure regulatory genes in the Agtrap ‐Plod1 locus associated with a deletion in Clcn6
In this study, we tested whether loss ofClcn6 would be protective against high salt-induced mortality. While we observed no significant differences in longevity or neuronal cell death between the SS-Clcn6 knock-out and SS-WT groups, we found that a mutation inClcn6 could be associated with changes to mRNA expression of nearbyMthfr,Nppa, andNppb genes, thereby complicating the genetic phenotype of our knockout animal. AbstractThe AGTRAP-PLOD1 locus is a conserved gene cluster containing several blood pressure regulatory genes, includingCLCN6,MTHFR,NPPA, andNPPB. Previous work revealed that knockout ofClcn6 on the Dahl Salt-...
Source: Physiological Reports - August 5, 2022 Category: Physiology Authors: Christine A. Klemens, Lashodya V. Dissanayake, Vladislav Levchenko, Adrian Zietara, Oleg Palygin, Alexander Staruschenko Tags: ORIGINAL ARTICLE Source Type: research

Benefits of Curcumin in the Vasculature: A Therapeutic Candidate for Vascular Remodeling in Arterial Hypertension and Pulmonary Arterial Hypertension?
Growing evidence suggests that hypertension is one of the leading causes of cardiovascular morbidity and mortality since uncontrolled high blood pressure increases the risk of myocardial infarction, aortic dissection, hemorrhagic stroke, and chronic kidney disease. Impaired vascular homeostasis plays a critical role in the development of hypertension-induced vascular remodeling. Abnormal behaviors of vascular cells are not only a pathological hallmark of hypertensive vascular remodeling, but also an important pathological basis for maintaining reduced vascular compliance in hypertension. Targeting vascular remodeling repre...
Source: Frontiers in Physiology - April 1, 2022 Category: Physiology Source Type: research

Constrictor responses of cerebral resistance arterioles in male and female rats exposed to prenatal alcohol
Our goal was to examine constrictor responses of cerebral arterioles in rats exposed to prenatal alcohol. We found that constrictor responses were preserved in adolescent and adult rats that were exposed to prenatal alcohol. We suggest that impaired dilation, with preservation of constriction, may favor a scenario leading to cerebral ischemia, and perhaps stroke. AbstractWhile it is known that dilation of cerebral arterioles to NOS-dependent agonists is impaired in rats exposed to prenatal alcohol, no studies have examined the influence of prenatal alcohol on constrictor response of cerebral arterioles. Our goal was to det...
Source: Physiological Reports - October 29, 2021 Category: Physiology Authors: Partha S. Saha, Tiffany M. Knecht, Denise M. Arrick, Michael J. Watt, Jamie L. Scholl, William G. Mayhan Tags: ORIGINAL ARTICLE Source Type: research

Altered Jagged1-Notch1 Signaling in Enhanced Dysfunctional Neovascularization and Delayed Angiogenesis After Ischemic Stroke in HFD/STZ Induced Type 2 Diabetes Rats
This study was aimed to characterize structural alterations and potential mechanisms in brain microvessels before and after ischemic stroke in type 2 diabetic rats treated with high-fat diet and streptozotocin (HFD/STZ). Furtherly, we tested our hypothesis that dysregulated intercellular Jagged1-Notch1 signaling was involved in the dysfunctional cerebral neovascularization both before and after ischemic stroke in HFD/STZ rats. In our study, we found increased yet dysfunctional neovascularization with activated Jagged1-Notch1 signaling in the cerebrovasculature before cerebral ischemia in HFD/STZ rats compared with non-diab...
Source: Frontiers in Physiology - July 8, 2021 Category: Physiology Source Type: research

Deficiency of Ataxia-Telangiectasia Mutated Kinase Modulates Functional and Biochemical Parameters of the Heart in Response to Western-type Diet
Am J Physiol Heart Circ Physiol. 2021 Apr 30. doi: 10.1152/ajpheart.00990.2020. Online ahead of print.ABSTRACTAtaxia telangiectasia mutated kinase (ATM) deficiency exacerbates heart dysfunction late after myocardial infarction. Here, we hypothesized that ATM deficiency modulates Western-type diet (WD)-induced cardiac remodeling with an emphasis on functional and biochemical parameters of the heart. Weight gain was assessed in male wild-type (WT) and ATM heterozygous knockout (hKO) mice on weekly basis, while cardiac functional and biochemical parameters were measured 14 weeks post-WD. hKO-WD mice exhibited rapid body weigh...
Source: American Journal of Physiology. Heart and Circulatory Physiology - April 30, 2021 Category: Physiology Authors: Mary C Wingard Suman Dalal Paige L Shook Rachel Myers Barbara A Connelly Douglas P Thewke Mahipal Singh Krishna Singh Source Type: research