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19 Results Found

  • Article
  • Open Access
7 Citations
2,774 Views
13 Pages

The Receptor AT1 Appears to Be Important for the Maintenance of Bone Mass and AT2 Receptor Function in Periodontal Bone Loss Appears to Be Regulated by AT1 Receptor

  • Maria Laura de Souza Lima,
  • Agnes Andrade Martins,
  • Caroline Addison Carvalho Xavier de Medeiros,
  • Gerlane Coelho Bernardo Guerra,
  • Robson Santos,
  • Michael Bader,
  • Flavia Q. Pirih,
  • Raimundo Fernandes de Araújo Júnior,
  • Gerly Anne de Castro Brito and
  • Aurigena Antunes de Araújo
  • + 4 authors

27 November 2021

A large number of experimental studies has demonstrated that angiotensin II (Ang II) is involved in key events of the inflammatory process. This study aimed to evaluate the role of Ang II type 1 (AT1) and Ang II type 2 (AT2) receptors on periodontiti...

  • Article
  • Open Access
3 Citations
3,412 Views
18 Pages

Characterization of the First Animal Toxin Acting as an Antagonist on AT1 Receptor

  • Anne-Cécile Van Baelen,
  • Xavier Iturrioz,
  • Marion Chaigneau,
  • Pascal Kessler,
  • Catherine Llorens-Cortes,
  • Denis Servent,
  • Nicolas Gilles and
  • Philippe Robin

24 January 2023

The renin-angiotensin system (RAS) is one of the main regulatory systems of cardiovascular homeostasis. It is mainly composed of angiotensin-converting enzyme (ACE) and angiotensin II receptors AT1 and AT2. ACE and AT1 are targets of choice for the t...

  • Article
  • Open Access
2 Citations
2,485 Views
13 Pages

Modulator Effect of AT1 Receptor Knockdown on THP-1 Macrophage Proinflammatory Activity

  • Lourdes Nallely Acevedo-Villavicencio,
  • Carlos Enrique López-Luna,
  • Juan Castillo-Cruz,
  • Rocío Alejandra Gutiérrez-Rojas,
  • Iris Selene Paredes-González,
  • Santiago Villafaña,
  • Fengyang Huang,
  • Cruz Vargas-De-León,
  • Rodrigo Romero-Nava and
  • Karla Aidee Aguayo-Cerón

26 May 2024

Currently, it is known that angiotensin II (AngII) induces inflammation, and an AT1R blockade has anti-inflammatory effects. The use of an AT1 receptor antagonist promotes the inhibition of the secretion of multiple proinflammatory cytokines in macro...

  • Review
  • Open Access
9 Citations
14,702 Views
16 Pages

9 November 2010

Patients with hypertension often manifest a dysregulated renin-angiotensin-aldosterone system (RAAS). Most of the available treatment approaches for hypertension are targeted towards the RAAS including direct renin inhibition, ACE inhibition, angiote...

  • Review
  • Open Access
22 Citations
7,975 Views
31 Pages

18 July 2023

The AT1 receptor has mainly been associated with the pathological effects of the renin-angiotensin system (RAS) (e.g., hypertension, heart and kidney diseases), and constitutes a major therapeutic target. In contrast, the AT2 receptor is presented as...

  • Article
  • Open Access
4 Citations
3,084 Views
14 Pages

Both hypertension and aging are known to increase the vulnerability of the brain to neurovascular damage, resulting in cognitive impairment. The present study investigated the efficacy of the antihypertensive drug losartan on age- and hypertension-as...

  • Article
  • Open Access
4 Citations
1,399 Views
11 Pages

6 June 2009

With an aim to identify the structural requirements for selective AT1 angiotensin antagonistic activity, a quantitative structure activity relationship (QSAR) analysis was carried out on a series of 6-substituted benzimidazole derivatives. The QSAR e...

  • Article
  • Open Access
6 Citations
3,901 Views
12 Pages

AT1 and AT2 Receptor Knockout Changed Osteonectin and Bone Density in Mice in Periodontal Inflammation Experimental Model

  • Maria Laura de Souza Lima,
  • Caroline Addison Carvalho Xavier de Medeiros,
  • Gerlane Coelho Bernardo Guerra,
  • Robson Santos,
  • Michael Bader,
  • Flavia Q. Pirih,
  • Raimundo Fernandes de Araújo Júnior,
  • Alan B. Chan,
  • Luis J. Cruz and
  • Aurigena Antunes de Araújo
  • + 5 authors

Background: The aim of this study was to evaluate the role of AT1 and AT2 receptors in a periodontal inflammation experimental model. Methods: Periodontal inflammation was induced by LPS/Porphyromonas gingivalis. Maxillae, femur, and vertebra were sc...

  • Article
  • Open Access
16 Citations
5,087 Views
16 Pages

Autoantibodies Targeting AT1- and ETA-Receptors Link Endothelial Proliferation and Coagulation via Ets-1 Transcription Factor

  • Rusan Catar,
  • Melanie Herse-Naether,
  • Nan Zhu,
  • Philine Wagner,
  • Oskar Wischnewski,
  • Angelika Kusch,
  • Julian Kamhieh-Milz,
  • Andreas Eisenreich,
  • Ursula Rauch and
  • Aurelie Philippe
  • + 7 authors

27 December 2021

Scleroderma renal crisis (SRC) is an acute life-threatening manifestation of systemic sclerosis (SSc) caused by obliterative vasculopathy and thrombotic microangiopathy. Evidence suggests a pathogenic role of immunoglobulin G (IgG) targeting G-protei...

  • Article
  • Open Access
6 Citations
1,933 Views
18 Pages

Potentiation of NMDA Receptors by AT1 Angiotensin Receptor Activation in Layer V Pyramidal Neurons of the Rat Prefrontal Cortex

  • Adrienn Hanuska,
  • Polett Ribiczey,
  • Erzsébet Kató,
  • Zsolt Tamás Papp,
  • Zoltán V. Varga,
  • Zoltán Giricz,
  • Zsuzsanna E. Tóth,
  • Katalin Könczöl,
  • Ákos Zsembery and
  • László Köles
  • + 2 authors

25 November 2024

NMDA receptors in the prefrontal cortex (PFC) play a crucial role in cognitive functions. Previous research has indicated that angiotensin II (Ang II) affects learning and memory. This study aimed to examine how Ang II impacts NMDA receptor activity...

  • Article
  • Open Access
21 Citations
7,620 Views
15 Pages

27 June 2014

Epidemiological studies have demonstrated that women with a history of preeclampsia have a two-fold increased risk of developing cardiovascular diseases in later life. It is not known whether or not this risk is associated with angiotensin II recepto...

  • Article
  • Open Access
1 Citations
2,504 Views
10 Pages

Effects of Inoculating the Diazotrophic Endophyte Bradyrhizobium sp. AT1 on Different Cultivars of Sweet Potato (Ipomoea batatas [L.] Lam.)

  • Junko Terakado-Tonooka,
  • Fukuyo Tanaka,
  • Toshihiko Karasawa,
  • Akihiro Suzuki and
  • Yoshinari Ohwaki

24 March 2023

Owing to the worldwide shortage of nitrogen (N) fertilizers, diazotrophic endophytes have received increasing attention as biofertilizers. In this study, we investigated the inoculation effects of a diazotrophic endophyte (Bradyrhizobium sp. AT1) on...

  • Article
  • Open Access
44 Citations
4,527 Views
18 Pages

Angiotensin II Induces Oxidative Stress and Endothelial Dysfunction in Mouse Ophthalmic Arteries via Involvement of AT1 Receptors and NOX2

  • Michael Birk,
  • Ewa Baum,
  • Jenia Kouchek Zadeh,
  • Caroline Manicam,
  • Norbert Pfeiffer,
  • Andreas Patzak,
  • Johanna Helmstädter,
  • Sebastian Steven,
  • Marin Kuntic and
  • Adrian Gericke
  • + 1 author

2 August 2021

Angiotensin II (Ang II) has been implicated in the pathophysiology of various age-dependent ocular diseases. The purpose of this study was to test the hypothesis that Ang II induces endothelial dysfunction in mouse ophthalmic arteries and to identify...

  • Review
  • Open Access
7 Citations
3,012 Views
12 Pages

In angiotensin II (Ang II)-dependent hypertension, Ang II activates angiotensin II type 1 receptors (AT1R) on renal vascular smooth muscle cells, leading to renal vasoconstriction with eventual glomerular and tubular injury and interstitial inflammat...

  • Article
  • Open Access
14 Citations
4,157 Views
30 Pages

13 September 2021

Heart failure is a major cause of death worldwide with insufficient treatment options. In the search for pathomechanisms, we found up-regulation of an enzyme, stearoyl-CoA desaturase 1 (Scd1), in different experimental models of heart failure induced...

  • Article
  • Open Access
33 Citations
5,338 Views
15 Pages

Background: In this study, we investigated the mechanism of Rho GTPases signaling on Ang II-mediated cell migration and dedifferentiation in human aortic vascular smooth muscle cells (HA-VSMCs) and an Ang II-infusion mouse model. Methods: Cells were...

  • Article
  • Open Access
12 Citations
3,479 Views
17 Pages

4 May 2022

We have previously shown that in urethane-anaesthetized rats, intravenous injection of the angiotensin II (Ang II) AT1 receptor antagonist losartan reversed the pressor effect of the cannabinoid CB1 receptor agonist CP55940 given in the paraventricul...

  • Article
  • Open Access
9 Citations
7,951 Views
23 Pages

Facile and Efficient Syntheses of a Series of N-Benzyl and N-Biphenylmethyl Substituted Imidazole Derivatives Based on (E)-Urocanic acid, as Angiotensin II AT1 Receptor Blockers

  • George Agelis,
  • Konstantinos Kelaidonis,
  • Amalia Resvani,
  • Dimitra Kalavrizioti,
  • Maria-Eleni Androutsou,
  • Panagiotis Plotas,
  • Demetrios Vlahakos,
  • Catherine Koukoulitsa,
  • Theodore Tselios and
  • John Matsoukas
  • + 1 author

27 June 2013

In the present work, a facile and efficient route for the synthesis of a series of N-substituted imidazole derivatives is described. Docking studies have revealed that N-substituted imidazole derivatives based on (E)-urocanic acid may be potential...

  • Article
  • Open Access
5 Citations
3,981 Views
19 Pages

28 May 2023

The current prevailing paradigm in the renin-angiotensin system dictates that most, if not all, biological, physiological, and pathological responses to its most potent peptide, angiotensin II (Ang II), are mediated by extracellular Ang II activating...