Project description:This study examined the renal gene expression profiles between spontaneously-hypertensive rats (SHR) and Wistar-Kyoto (WKY) rats at a pre-hypertensive stage (3 weeks of age) and hypertensive stage (9 weeks of age). In addition, age-related changes in gene expression patterns were examined from 3 to 9 weeks in both WKY and SHR. Five to six individual kidney samples of the same experimental group were pooled together and quadruplicate hybridizations were performed on the NIEHS Rat v2.1, 2.2 and 3.0 arrays. Keywords: other
Project description:This study examined the renal gene expression profiles between spontaneously-hypertensive rats (SHR) and Wistar-Kyoto (WKY) rats at a pre-hypertensive stage (3 weeks of age) and hypertensive stage (9 weeks of age). In addition, age-related changes in gene expression patterns were examined from 3 to 9 weeks in both WKY and SHR. Five to six individual kidney samples of the same experimental group were pooled together and quadruplicate hybridizations were performed on the NIEHS Rat v2.1, 2.2 and 3.0 arrays.
Project description:Genome wide DNA methylation profiling of hypertensive, pre-hypertensive, and healthy control samples. The Illumina Infinium 450k Human DNA methylation Beadchip was used to obtain DNA methylation profiles. Samples included 44 hypertensive samples, 44 pre-hypertensive samples, and 44 healthy controls.
Project description:Hypertensive nephropathy is a common complication of hypertension that places a heavy burden on society. SGLT2 inhibitors are a new class of hypoglycemic agents that have been shown to have specific protective effects on the kidneys. This study aimed to investigate the early changes in renal transcription spectrum in spontaneously hypertensive rats and the effects of DAPA, a sodium-glucose cotransporter 2 inhibitor, on the remission of hypertensive nephropathy and its underlying molecular mechanisms. We furthermore show thatSGLT2 inhibitors may reduce inflammation and improve energy metabolism by regulating the expression of SLC9a3, Zbtb20, Trim50 and Ccnl2.
Project description:The objective of this study was to compare blank control mice (WT) with AngII-induced hypertensive mice (M). Angii-induced hypertensive mice (M) and QDG intervention group (QDG); Different genes expressed in renal tissue and identify new targets for reversing hypertension-induced renal damage.
Project description:To determine if there exists a consistent gene signature associated with vascular hypertrophy among different rat hypertensive models: treated and untreated Wistar Kyoto (WKY) rats and treated and untreated Spontaneous Hypertensive Rat (SHR) rats. Keywords: strain comparison, treatment vs control
Project description:We have used Affymetrix microarray-driven gene profiling to comprehensively describe the expression of mRNAs in the nucleus tractus solitarii (NTS) in the adult male spontaneously hypertensive rat (SHR) as compared to its normotensive parental Wistar-Kyoto (WKY) strain. Keywords: Gene expression
Project description:Animals. Male Sprague–Dawley rats (Charles River Laboratories, Wilmington, MA) weighing about 250g were used. The study was approved by the Thomas Jefferson University Institutional Animal Care and Use Committee and was conducted in accordance with the National Institutes of Health Guide for the Care and Use of Laboratory Animals. The animals were housed in Thomas Jefferson University's animal care facilities. Animals were anesthetized with isoflurane dissolved in O2 (5% induction; 1% maintenance) and one femoral artery and vein were cannulated (PE-50 tubing) via a small medial incision for measurement of arterial pressure and infusion of drugs, respectively. The cannulae were run subcutaneously to an exit incision between the scapulae. The leg wound was sutured and topical anesthetic (lidocaine) was applied to both skin incisions. Following surgery, after one hour of stable and normal resting blood pressure and heart rate, intravenous infusion was initiated of approximately 1 mL saline, as a control, or phenylephrine (200 µg/mL; 1 mL/hr), to induce hypertension. We followed standard methods in the use of phenylephrine (PE) to elevate blood pressure. PE does not cross the blood brain barrier and the elevated blood pressure it produces has been shown to cause molecular effects in the NTS principally via increased baroreceptor afferent drive by both pharmacological and sinoaortic denervation studies. We titered the PE dose to maintain intermediate levels of elevated blood pressure 25 mmHg above resting blood pressure. Keywords: Hypertension, time series
Project description:Hypertension remains a poorly understood condition, and the understanding of the sympathetic nervous systems role in this disease remains even more limited. In this study, RNA-sequencing is used to identify transcriptomal differences in the sympathetic stellate ganglia between the 16-week-old normotensive wistar strain and the spontaneously hypertensive rat strain.This dataset should allow for further molecular characterisation of hypertensive changes in a cardiac-innervating sympathetic ganglion.
Project description:Vascular aging is directly related to several major diseases including hypertension and atherosclerosis, in which endothelial dysfunction and smooth muscle phenotype changes are crucial. However, cell types within the vessel wall and their dynamic cellular communication status have not been characterized in different arteries during hypertensive aging. To depict the interconnectedness of complex mechanism between hypertension and aging, we performed single cell RNA sequencing of aorta, femoral and mesentery artery, respectively from Wistar Kyoto rats (WKY) and spontaneously hypertensive rats (SHR) aging 16-72 weeks. We found that aging and hypertension alone have a significant impact on the alteration of cellular composition and artery remodeling both on conductive and resistant arteries, even greater when superimposed. Consistently, smooth muscle cells (SMCs) underwent phenotypic switching from contractile towards synthetic, apoptotic and senescent SMCs with aging/hypertension. We identified three sub-clusters of Spp1high synthetic SMCs, Spp1high matrix activated fibroblasts and Spp1high scar-associated macrophage involved in hypertensive aging, highlighting that Spp1, encoding protein osteopontin (OPN), could be a potential regulator participating in hypertensive aging. Spp1high scar-associated macrophage enriched for ROS metabolic process, supramolecular fiber organization and actin filament organization. Cell-cell communication analysis also revealed SPP1-Cd44 receptor pairing was markedly aggravated on hypertensive aging condition. Importantly, the concentration of OPN in human serum significantly potentiated in hypertension patient compared with normal group. Thus, we provide a comprehensive cell atlas to systematically resolve the cellular diversity and dynamic cellular communication changes of the vessel wall during hypertensive aging, highlight the mechanisms of vascular vasodilation through cGMP-PKG signaling pathway and identified a protein marker osteopontin as a potential regulator of vascular remodeling during hypertensive aging.