Read by QxMD icon Read

Angiotensin II and endothelin

Heng-Jing Hu, Zhi-Sheng Jiang, Sheng-Hua Zhou, Qi-Ming Liu
The effects of hydrogen sulfide (H2S) and the nuclear factor κB (NF-κB) signaling pathway in angiotensin II (AngII)-induced endothelin-1 (ET-1) expression and subsequent cytotoxicity remain unclear. The present study aimed to investigate the hypothesis that H2S protects human umbilical vein endothelial cells (HUVECs) against AngII‑stimulated ET‑1 generation and subsequent cytotoxicity‑induced endoplasmic reticulum stress via the NF‑κB signaling pathway. The results of the present study demonstrated that AngII significantly upregulated the expression levels of ET‑1, glucose‑regulated protein 78, CCAAT‑enhancer‑binding protein homologous protein, phosphorylated (p)‑p65 and inducible nitric oxide synthase; stimulated nitric oxide production; suppressed the expression and activity of cystathionine-γ-lyase (CSE), a H2S synthetase; and decreased cell viability...
October 12, 2016: Molecular Medicine Reports
Estelle R Simo-Cheyou, George Vardatsikos, Ashok K Srivastava
We have previously demonstrated that the non-receptor protein tyrosine kinase (NR-PTK) c-Src is an upstream regulator of endothelin-1 (ET-1) and angiotensin II-induced activation of protein kinase B (PKB) signaling in vascular smooth muscle cells (VSMCs). We have also demonstrated that ET-1 potently induces the expression of the early growth response protein-1 (Egr-1), a zinc finger transcription factor that is overexpressed in models of vascular diseases, such as atherosclerosis. However, the involvement of c-Src in ET-1‑induced Egr-1 expression has not yet been investigated and its role in mitogen-activated protein kinase (MAPK) signaling remains controversial...
October 6, 2016: International Journal of Molecular Medicine
Wendy Rosales, Juan Carulla, Jeison García, Diana Vargas, Fernando Lizcano
Epigenetic changes induced by histone demethylases play an important role in differentiation and pathological changes in cardiac cells. However, the role of the jumonji family of demethylases in the development of cardiac hypertrophy remains elusive. In this study, the presence of different histone demethylases in cardiac cells was evaluated after hypertrophy was induced with neurohormones. A cell line from rat cardiomyocytes was used as a biological model. The phenotypic profiles of the cells, as well as the expression of histone demethylases, were studied through immunofluorescence, transient transfection, western blot, and qRT-PCR analysis after inducing hypertrophy by angiotensin II and endothelin-1...
2016: BioMed Research International
Jianying Tao, Juanxiu Lv, Weisheng Li, Pengjie Zhang, Caiping Mao, Zhice Xu
Melatonin is involved in the regulation of blood pressure through the receptor dependent or independent route. However, the effect of melatonin on fetal blood pressure is unknown. This study investigated the effect of melatonin on blood pressure of the late-term ovine fetus in utero. Melatonin and/or antagonists were intravenously administered into the fetuses. Mean arterial pressure and heart rate were recorded. Fetal blood samples were analyzed for biochemical parameters and hormones, including cortisol, angiotensin I, angiotensin II, aldosterone, atrial natriuretic peptide, corticotrophin-releasing hormone, adrenocorticotropic hormone, and endothelin...
September 2016: Reproductive Biology
Emanuele Cozzi, Fiorella Calabrese, Marco Schiavon, Paolo Feltracco, Michela Seveso, Cristiana Carollo, Monica Loy, Massimo Cardillo, Federico Rea
Preexisting donor-specific anti-HLA antibodies (DSA) have been associated with reduced survival of lung allografts. However, antibodies with specificities other than HLA may have a detrimental role on the lung transplant outcome. A young man with cystic fibrosis underwent lung transplantation with organs from a suitable deceased donor. At the time of transplantation, there were no anti-HLA DSA. During surgery, the patient developed a severe and intractable pulmonary hypertension associated with right ventricle dysfunction which required artero-venous ECMO...
September 19, 2016: American Journal of Transplantation
Suzanne A Nasser, Ramzi Sabra, Ahmed I Elmallah, Mahmoud M Mohy El-Din, Mohamed M Khedr, Mahmoud M El-Mas
AIMS: Cyclosporine (CSA) elevates blood pressure (BP) and alters arterial baroreflex sensitivity (BRS) and vasoreactivity. In this study we determined whether the renin-angiotensin system (RAS) interplays with other vasopressor pathways in mediating the CSA actions. MATERIALS AND METHODS: Whole animal and isolated vascular preparations were employed to determine the effects of pharmacologic interruption of angiotensin II (Ang II), endothelin (ET), or thromboxane (TXA2) signaling on the adverse cardiovascular effects of CSA...
October 15, 2016: Life Sciences
Suresh R Giri, Bibhuti Bhoi, Mukul R Jain, Madhumanjiri M Gatne
AIMS: Rosiglitazone (RSZ), a PPARγ agonist was potent efficacious insulin sensitizing blockbuster drug for treatment of Type 2 diabetes mellitus (T2DM) but the benefit of PPARγ activation in congestive heart failure (CHF) was controversial. The present work was planned to study the role of RSZ in diabetic cardiopathy. MAIN METHODS: Zucker fa/fa rats, the genetic model of T2DM were subjected to constriction of suprarenal abdominal aorta so that they represent a combined model of diabetes and cardiopathy...
October 1, 2016: Life Sciences
C F Sun, S G Wang, Y G Peng, Y Shi, Y P Du, G X Shi, T Wen, Y K Wang, H Su
OBJECTIVE: To investigate the effects of different drugs on systolic blood pressure (SBP) and left ventricular hypertrophy (LVH) in spontaneously hypertensive rats under cold stress. METHODS: A total of 40 male spontaneously hypertensive rats aged 10 weeks (160~200 g) were given adaptive feeding for 7 days at a temperature of 20±1°C and then randomly divided into control group, cold stress group, metoprolol group, amlodipine group, and benazepril group, with 8 rats in each group...
June 20, 2016: Chinese Journal of Industrial Hygiene and Occupational Diseases
Undine A Gerlach, Nils Lachmann, Giuseppina Ranucci, Birgit Sawitzki, Constanze Schoenemann, Johann Pratschke, Duska Dragun, Andreas Pascher
BACKGROUND: Non-HLA-allo- and autoantibodies are involved in allograft rejection in kidney and heart transplantation. Their role in intestinal transplantation has not yet been described. We examined the development of anti-Angiotensin II type I receptor antibodies (anti-AT1R) and anti-Endothelin-Type A receptor antibodies (anti-ETAR) associated with the clinical course and histopathological findings of ITX-recipients. METHODS: 37 patients underwent intestinal or multivisceral transplantation...
August 5, 2016: Transplantation
Tatiana S Rodríguez-Reyna, Carlos Núñez-Alvarez, Alfredo Cruz-Lagunas, Rosalinda Posadas-Sánchez, Nonanzit Pérez-Hernández, Luis Jiménez-Alvarez, Gustavo Ramírez-Martínez, Julio Granados, Gilberto Vargas-Alarcón, Joaquín Zúñiga
INTRODUCTION: Systemic sclerosis (SSc) shows variable clinical expression in different ethnic groups; vascular abnormalities are a prominent feature of this disease and its clinical expression may be influenced by genetic factors. PATIENTS AND METHODS: Herein, we describe 15 polymorphisms of the renin-angiotensin-aldosterone pathway in 170 Mexican admixed SSc patients (defined as patients with Mexican ancestry for at least 3 generations) and 199 healthy controls...
July 2016: Journal of the Renin-angiotensin-aldosterone System: JRAAS
Teresa M Seccia, Brasilina Caroccia, Francesca Gioco, Maria Piazza, Valentina Buccella, Diego Guidolin, Eugenia Guerzoni, Barbara Montini, Lucia Petrelli, Elisa Pagnin, Verdiana Ravarotto, Anna S Belloni, Lorenzo A Calò, Gian Paolo Rossi
BACKGROUND: Tubulointerstitial fibrosis, the final outcome of most kidney diseases, involves activation of epithelial mesenchymal transition (EMT). Endothelin-1 (ET-1) activates EMT in cancer cells, but it is not known whether it drives EMT in the kidney. We therefore tested the hypothesis that tubulointerstitial fibrosis involves EMT driven by ET-1. METHODS AND RESULTS: Transgenic TG[mRen2]27 (TGRen2) rats developing fulminant angiotensin II-dependent hypertension with prominent cardiovascular and renal damage were submitted to drug treatments targeted to ET-1 and/or angiotensin II receptor or left untreated (controls)...
July 2016: Journal of the American Heart Association
Anar Dushpanova, Silvia Agostini, Enrica Ciofini, Manuela Cabiati, Valentina Casieri, Marco Matteucci, Silvia Del Ry, Aldo Clerico, Sergio Berti, Vincenzo Lionetti
Expression of endothelin (ET)-1 is increased in endothelial cells exposed to angiotensin II (Ang II), leading to endothelial dysfunction and cardiovascular disorders. Since von Willebrand Factor (vWF) blockade improves endothelial function in coronary patients, we hypothesized that targeting endothelial vWF with short interference RNA (siRNA) prevents Ang II-induced ET-1 upregulation. Nearly 65 ± 2% silencing of vWF in porcine aortic endothelial cells (PAOECs) was achieved with vWF-specific siRNA without affecting cell viability and growth...
2016: Scientific Reports
M Buleishvili, N Lobjanidze, G Ormotsadze, M Enukidze, M Machavariani, T Sanikidze
The aim of our investigation was to establish the role of estrogens in the pathogenesis of hypertension during menopause. Menopausal women (40-55 years) with hypertension who had been admitted to "The N. Kipshidze Central University Clinic" (Tbilisi, Georgia) during 2011-2015 and without hypertension were investigated. Essential hypertension was defined as elevated blood pressure while in a sitting position, exceeding 160±10/90±10 mm Hg 60/95 mm Hg, for three consecutive measurements over a period of at least 4 weeks...
June 2016: Georgian Medical News
Yoon-Kyung Chang, Hyunsu Choi, Jin Young Jeong, Ki-Ryang Na, Kang Wook Lee, Dae Eun Choi
BACKGROUND/AIMS: Both endothelin-1 (ET-1) and the renin-angiotensin system (RAS) may play important roles in renal fibrosis in the obstructed kidney. However, there have been few clear demonstrations of a relationship between their activation and additive or synergistic roles in renal fibrosis. We investigated the protective roles and relationship between renal RAS and ET-1 in unilateral ureteral obstruction (UUO) mice. METHODS: 8-week-old male C57BL/6 mice were divided into seven groups: sham, bosentan+sham, valsartan+sham, vehicle+UUO, bosentan+UUO, valsartan+UUO, and valsartan+bosentan+UUO...
2016: Kidney & Blood Pressure Research
Ze-Jun Huo, Dong Li, Jia Guo, Sai Li, Ning Ding, Zhi-Xin Li
OBJECTIVE: To observe the effect of electroacupuncture (EA) stimulation on the expressions of angiotensinogen (AGT), angiotensin II type 1 receptor (AT1R), endothelin-1 (ET1), and endothelin A receptor (ETAR) mRNA in spontaneously hypertensive rat (SHR) aorta. METHODS: Eighteen male SHRs were randomly divided into three groups, an SHR group, an SHR Baihui (DU 20) and Zusanli (ST 36) acupoint (SHR-AP) group, and an SHR non-acupoint (SHR-NAP) group, with 6 rats in each group...
October 2016: Chinese Journal of Integrative Medicine
Sha Sha, Dandan Xu, Yanwei Wang, Weifang Zhao, Xiaoni Li
Fargesin, a bioactive neolignan isolated from magnolia plants, is widely used in the treatment of managing rhinitis, inflammation, histamine, sinusitis, and headache. To provide more biological information about fargesin, we investigated the effects of fargesin on rat aortic rings and 2-kidney, 1-clip (2K1C) hypertensive rats. In vitro, fargesin caused concentration-dependent vasorelaxation in rat isolated aortic rings induced by KCl and norepinephrine. The effect was weakened by endothelium denudation and nitric oxide (NO) synthesis inhibition...
August 2016: Canadian Journal of Physiology and Pharmacology
Nancy L Reinsmoen, Xiaohai Zhang
PURPOSE OF REVIEW: Development of donor human leukocyte antigen (HLA)-specific antibodies is associated with graft loss, yet the role of non-HLA antibodies in solid organ transplant needs to be further defined. It is suggested that HLA antibodies and non-HLA antibodies collaborate together to impact graft outcome. This review focuses on the latest findings on antibodies against these non-HLA antigens in thoracic organ transplant. RECENT FINDINGS: These non-HLA antigens include signaling proteins expressed on the cell surface, such as angiotensin II type 1 receptor (AT1R), endothelin type A receptor, and structure proteins, such as myosin, vimentin, and Kα1 tubulin, and extracellular matrix protein collagen...
August 2016: Current Opinion in Organ Transplantation
Seth Love, J Scott Miners
There is a perfusion deficit in Alzheimer's disease (AD), commencing in the precuneus and spreading to other parts of the cerebral cortex. The deficit anticipates the development of dementia, contributes to brain damage, and is caused by both functional and structural abnormalities of the cerebral vasculature. Most of the abnormalities are probably secondary to the accumulation of Aβ but the consequent hypoperfusion may, in turn, increase Aβ production. In the early stages of disease, abnormalities that cause vasoconstriction predominate...
September 2016: Brain Pathology
Antoni Bayes-Genis, Nuria Morant-Talamante, Josep Lupón
Neprilysin is acknowledged as a key player in neurohormonal regulation, a cornerstone of modern drug therapy in chronic heart failure. In the cardiovascular system, neprilysin cleaves numerous vasoactive peptides, some with mainly vasodilating effects (natriuretic peptides, adrenomedullin, bradykinin) and other with mainly vasoconstrictor effects (angiotensin I and II, endothelin-1). For decades, neprilysin has been an important biotarget. Academia and industry have combined active efforts to search for neprilysin inhibitors (NEPIs) that might be useful in clinical practice...
August 2016: Current Heart Failure Reports
Miguel Romero, Rosario Jiménez, Marta Toral, Elvira León-Gómez, Manuel Gómez-Gúzman, Manuel Sánchez, María José Zarzuelo, Isabel Rodríguez-Gómez, Geraldine Rath, Juan Tamargo, Francisco Pérez-Vizcaíno, Chantal Dessy, Juan Duarte
Activation of peroxisome proliferator-activated receptor-β/δ (PPARβ) lowers blood pressure in genetic and mineralocorticoid-induced hypertension. Regulator of G-protein-coupled receptor signaling 5 (RGS5) protein, which interferes in angiotensin II (AngII) signaling, is a target gene to PPARβ The aim of the present study was to examine whether PPARβ activation in resistance arteries and brain tissues prevents the elevated blood pressure in AngII-induced hypertension and evaluate the role of RGS5 in this effect...
July 2016: Journal of Pharmacology and Experimental Therapeutics
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"