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Angiotensin converting enzyme

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https://www.readbyqxmd.com/read/28641333/validation-of-brain-angiotensin-system-blockade-as-a-novel-drug-target-in-pharmacological-treatment-of-neuropsychiatric-disorders
#1
Dominik Wincewicz, Jan J Braszko
Retreat in psychiatric drug development results in innovative medication decline that might be at least partially overcome by adjunct therapy. New evidence from clinical studies has shown a possible role for brain Renin-Angiotensin System (RAS) in both affective and psychotic disorders. Simultaneously, rapidly accumulating data from basic studies indicate effectiveness of central RAS blockade in much broader range of neuropsychiatric disease. Recent findings implicate brain RAS, especially Angiotensin II (Ang II), in neural pathophysiology of mental disorders through neuroendocrine modulation and effects on neurotransmitter release, mostly noradrenaline, acetylcholine and dopamine...
June 22, 2017: Pharmacopsychiatry
https://www.readbyqxmd.com/read/28640753/mechanism-of-antihypertensive-effect-of-mucuna-pruriens-l-seed-extract-and-its-isolated-compounds
#2
Mohammad Yaseen Khan, Vimal Kumar
Background In the search of safe and effective lead molecules from natural sources, Mucuna pruriens (MP) L. (Fabaceae) seeds were utilized for exploring the antihypertensive potential. Traditionally, it is used as diuretic and hypotensive. Methods Bioassay-guided fractions were utilized for the isolation of active compounds by column chromatography. IC50 value, enzyme kinetics and inhibition mechanism were determined. In vivo time and dose-dependent hypotensive study followed by changes in mean arterial pressure (MAP) induced by angiotensin I (3 nmol/kg), angiotensin II (3 nmol/kg), and bradykinin (10 nmol/kg) in anesthetized rats was done...
June 21, 2017: Journal of Complementary & Integrative Medicine
https://www.readbyqxmd.com/read/28636634/cardiomyopathy-development-protection-after-myocardial-infarction-in-rats-successful-competition-for-major-dihydropyridines-common-metabolite-against-captopril
#3
Katarzyna A Mitręga, Adrianna M Spałek, Jerzy Nożyński, Maurycy Porc, Magdalena Stankiewicz, Tadeusz F Krzemiński
During the last 25 years angiotensin-converting enzyme inhibitors spectacularly conquered the field of cardiovascular diseases therapy. Nevertheless, lack of new studies concerning side effects associated with their chronic administration seems to be rather confusing. In our previous research, we proved that the main furnidipines' metabolite (M-2) possess multiple cardioprotective actions. Currently, we compared effects of post-infarction long-term oral treatment with M-2 and captopril on hemodynamic parameters and "ischemic cardiomyopathy" development in rats...
2017: PloS One
https://www.readbyqxmd.com/read/28634927/nine-pairs-of-megastigmane-enantiomers-from-the-leaves-of-eucommia-ulmoides-oliver
#4
Jiankun Yan, Xuliu Shi, Paul Owusu Donkor, Huajie Zhu, Xiumei Gao, Liqin Ding, Feng Qiu
Nine pairs of megastigmane enantiomers (1a/1b-9a/9b), comprising two new compounds (6S,9R)-blumenol C (7b), (6S,9S)-blumenol C (8b), two pairs of enantiomers (+)-(6R)-eucomegastigmane A (1a), (-)-(6S)-eucomegastigmane A (1b), (+)-(3S,4S)-eucomegastigmane B (5a), (-)-(3R,4R)-eucomegastigmane B (5b) isolated by chiral resolution firstly, and twelve known compounds, were isolated from the leaves of Eucommia ulmoides Oliver. Their structures were elucidated based on extensive spectroscopic analysis. Absolute configurations of the megastigmane enantiomers were assigned by comparing experimental ECD and OR with calculated ECD and OR...
June 20, 2017: Journal of Natural Medicines
https://www.readbyqxmd.com/read/28634582/cancer-stem-cells-in-moderately-differentiated-lip-squamous-cell-carcinoma-express-components-of-the-renin-angiotensin-system
#5
Rachna S Ram, Helen D Brasch, Jonathan C Dunne, Paul F Davis, Swee T Tan, Tinte Itinteang
AIM: We investigated the expression of the renin-angiotensin system (RAS) by cancer stem cell (CSC) subpopulations we have identified in moderately differentiated lip squamous cell carcinoma (MDLSCC). METHOD: Ten MDLSCC samples underwent 3,3-diaminobenzidine (DAB) and immunofluorescent immunohistochemical (IHC) staining for (pro)renin receptor (PRR), angiotensin-converting enzyme (ACE), angiotensin II receptor 1 (ATIIR1), and receptor 2 (ATIIR2). NanoString analysis and Western blotting (WB) were performed on six MDLSCC samples for gene and protein expression, respectively...
2017: Frontiers in Surgery
https://www.readbyqxmd.com/read/28633842/effects-of-multi-frequency-ultrasound-pretreatment-under-low-power-density-on-the-enzymolysis-and-the-structure-characterization-of-defatted-wheat-germ-protein
#6
Xue Yang, Yunliang Li, Suyun Li, Ayobami Olayemi Oladejo, Yucheng Wang, Shanfen Huang, Cunshan Zhou, Yang Wang, Li Mao, Yanyan Zhang, Haile Ma, Xiaofei Ye
The effects of ultrasonic frequency mode, power density, pretreatment time and other parameters under low power density on the degree of hydrolysis (DH) of defatted wheat germ protein (DWGP) and angiotensin-I-converting enzyme (ACE) inhibitory activity of DWGP hydrolysate were studied in this research. Ultraviolet-visible (UV-Vis) spectra, free sulfhydryl (SH), disulfide bond (SS), surface hydrophobicity and hydrophobic protein content of ultrasound-pretreated protein and hydrophobic amino acid (HAA) content of alcalase-hydrolysate of DWGP were measured under optimized ultrasonic condition...
September 2017: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/28633819/effects-of-ultrasound-pretreatment-with-different-frequencies-and-working-modes-on-the-enzymolysis-and-the-structure-characterization-of-rice-protein
#7
Xue Yang, Yunliang Li, Suyun Li, Ayobami Olayemi Oladejo, Siyu Ruan, Yucheng Wang, Shanfen Huang, Haile Ma
The effects of ultrasound pretreatment with different frequencies and working modes, including mono-frequency ultrasound (MFU), dual-frequency ultrasound (DFU) and tri-frequency ultrasound (TFU), on the degree of hydrolysis (DH) of rice protein (RP) and angiotensin-I-converting enzyme (ACE) inhibitory activity of RP hydrolysate were investigated. Ultraviolet-visible (UV) spectroscopy, fourier transform infrared (FTIR) spectroscopy, surface hydrophobicity and scanning electron microscopy (SEM) of RP pretreated with ultrasound were measured...
September 2017: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/28629525/erythropoietin-regulation-by-angiotensin-ii
#8
Yong-Chul Kim, Ognoon Mungunsukh, Regina M Day
The renin-angiotensin system (RAS) is a key regulator of blood pressure and blood volume homeostasis. The RAS is primarily comprised of the precursor protein angiotensinogen and the two proteases, renin and angiotensin-converting enzyme (ACE). Angiotensin I (Ang I) is derived from angiotensinogen by renin, but appears to have no biological activity. In contrast, angiotensin II (Ang II) that has a variety of biological functions in the cells is converted from Ang I through removal of two-C-terminal residues by ACE...
2017: Vitamins and Hormones
https://www.readbyqxmd.com/read/28627932/short-term-prognostic-effect-of-prior-cerebrovascular-and-peripheral-artery-disease-in-patients-with-acute-coronary-syndrome-can-we-do-better
#9
Filipa Cordeiro, Pedro S Mateus, Alberto Ferreira, Silvia Leao, Miguel Moz, J Ilidio Moreira
BACKGROUND: We sought to evaluate the impact of prior cerebrovascular and/or peripheral arterial disease (PAD) on in-hospital outcomes in patients with acute coronary syndromes. METHODS: From 1 October 2010 to 26 February 2016, 13,904 acute coronary syndrome patients were enrolled in a national multicentre registry. They were divided into four groups: prior stroke/transient ischaemic attack (stroke/TIA); prior PAD; prior stroke/TIA and PAD; none. The endpoints included in-hospital mortality and a composite endpoint of death, re-infarction and stroke during hospitalization...
June 1, 2017: European Heart Journal. Acute Cardiovascular Care
https://www.readbyqxmd.com/read/28626916/unexpected-functions-of-angiotensin-converting-enzyme-beyond-its-enzymatic-activity
#10
REVIEW
Jean Martinez
Angiotensin converting enzyme (ACE) is a well-known enzyme, largely studied for its action on hypertension, as it produces angiotensin II from angiotensin I. This paper describes two original behaviours of ACE. We showed that ACE could hydrolyse gastrin, a neuropeptide from the gastrointestinal tract, releasing the C-terminal amidated dipeptide H-Asp-Phe-NH2 . This dipeptide is believed to be involved in the gastrin-induced acid secretion in the stomach. This hypothetic mechanism of action of gastrin resulted in a strategy to rationally design gastrin receptor antagonists...
June 19, 2017: Journal of Peptide Science: An Official Publication of the European Peptide Society
https://www.readbyqxmd.com/read/28626088/secondary-prevention-of-cardiovascular-disease-in-patients-with-type-2-diabetes-international-insights-from-the-tecos-trial
#11
Neha J Pagidipati, Ann Marie Navar, Karen S Pieper, Jennifer B Green, M Angelyn Bethel, Paul W Armstrong, Robert G Josse, Darren K McGuire, Yuliya Lokhnygina, Jan H Cornel, Sigrun Halvorsen, Timo E Strandberg, Tuncay Delibasi, Rury R Holman, Eric D Peterson
Background -Intensive risk factor modification significantly improves outcomes for patients with diabetes and cardiovascular disease (CVD). However, the degree to which secondary prevention treatment goals are achieved in international clinical practice is unknown. Methods -Attainment of 5 secondary prevention parameters-aspirin use, lipid control (low-density lipoprotein cholesterol <70 mg/dL or statin therapy), blood pressure control (<140 mmHg systolic, <90 mmHg diastolic), angiotensin-converting enzyme inhibitor or angiotensin receptor blocker use, and non-smoking status-was evaluated among 13,616 patients from 38 countries with diabetes and known CVD at entry into TECOS...
June 16, 2017: Circulation
https://www.readbyqxmd.com/read/28625460/perioperative-use-of-angiotensin-converting-enzyme-inhibitors-and-angiotensin-receptor-antagonists
#12
REVIEW
Luis Mario Vaquero Roncero, David Sánchez Poveda, Joaquín José Valdunciel García, María Elisa Sánchez Barrado, José María Calvo Vecino
STUDY OBJECTIVE: Clinical repercussions of perioperative treatment with ACEIs/ARBs. DESIGN: Systematic review according to PRISMA statement. SETTING: Perioperative period. PATIENTS: 29 studies 11 cases/cases series, 12 observational studies and 6 randomized studies. MEASUREMENTS: Arterial blood pressure differences, refractory hypotension, other comorbidities. MAIN RESULTS: The studies show different results regarding the topics measured...
August 2017: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/28625450/vasoplegic-syndrome-an-update-on-perioperative-considerations
#13
REVIEW
Henry Liu, Ling Yu, Longqiu Yang, Michael S Green
Vasoplegic syndrome (VS) is increasingly recognized as an important clinical entity in perioperative medicine. VS is characterized by significant arterial hypotension, normal or high cardiac output, low systemic vascular resistance, and increased requirements for intravenous volume and vasopressors. Tremendous variations exist regarding incidence reported in the literature and management at different institutions; and the incidence of VS is likely significantly higher than many anesthesiologists believe. Thus the aims of this article are to review the pertinent aspects related to VS and alert clinical anesthesiologists to this under-recognized yet very challenging clinical condition...
August 2017: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/28624211/translation-of-angiotensin-converting-enzyme-2-upon-liver-and-lung-targeted-delivery-of-optimized-chemically-modified-mrna
#14
Eva Schrom, Maja Huber, Manish Aneja, Christian Dohmen, Daniela Emrich, Johannes Geiger, Günther Hasenpusch, Annika Herrmann-Janson, Verena Kretzschmann, Olga Mykhailyk, Tamara Pasewald, Prajakta Oak, Anne Hilgendorff, Dirk Wohlleber, Heinz-Gerd Hoymann, Dirk Schaudien, Christian Plank, Carsten Rudolph, Rebekka Kubisch-Dohmen
Changes in lifestyle and environmental conditions give rise to an increasing prevalence of liver and lung fibrosis, and both have a poor prognosis. Promising results have been reported for recombinant angiotensin-converting enzyme 2 (ACE2) protein administration in experimental liver and lung fibrosis. However, the full potential of ACE2 may be achieved by localized translation of a membrane-anchored form. For this purpose, we advanced the latest RNA technology for liver- and lung-targeted ACE2 translation...
June 16, 2017: Molecular Therapy. Nucleic Acids
https://www.readbyqxmd.com/read/28623899/renin-angiotensin-system-blockers-and-residual-kidney-function-loss-in-patients-initiating-peritoneal-dialysis-an-observational-cohort-study
#15
Jenny I Shen, Anjali B Saxena, Sitaram Vangala, Satvinder K Dhaliwal, Wolfgang C Winkelmayer
BACKGROUND: Although angiotensin-converting enzyme inhibitors (ACEI) and angiotensin-II receptor blockers (ARB) have been shown to preserve residual kidney function in a select group of Asian patients undergoing continuous ambulatory peritoneal dialysis (PD) in two small randomized clinical trials, the effectiveness of these drugs has yet to be demonstrated in a more diverse population of patients with multiple comorbid conditions. We investigated the association between ACEI/ARB use and development of recorded anuria in a cohort of patients initiating PD in the U...
June 17, 2017: BMC Nephrology
https://www.readbyqxmd.com/read/28623809/dual-target-screening-of-bioactive-components-from-traditional-chinese-medicines-by-hollow-fiber-based-ligand-fishing-combined-with-liquid-chromatography-mass-spectrometry
#16
Liang Chen, Xin Wang, Youping Liu, Xin Di
A novel strategy was developed for dual-target screening of bioactive components from traditional Chinese medicines (TCMs). This strategy was based on the use of low-cost microporous hollow fibers filled with target enzymes as baits to "fish out" the ligands in TCM extracts, followed by identification of the ligands dissociated from the target-ligand complexes by liquid chromatography-mass spectrometry. Ganjiang Huangqin Huanglian Renshen Decoction (GHHRD), a classical TCM prescription for diabetes treatment, was chosen as a model sample to evaluate the feasibility of the proposed strategy...
June 2, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28623462/in-silico-investigations-of-chemical-constituents-of-clerodendrum-colebrookianum-in-the-anti-hypertensive-drug-targets-rock-ace-and-pde5
#17
Hemant Arya, Safiulla Basha Syed, Sorokhaibam Sureshkumar Singh, Dinakar R Ampasala, Mohane Selvaraj Coumar
Understanding the molecular mode of action of natural product is a key step for developing drugs from them. In this regard, this study is aimed to understand the molecular-level interactions of chemical constituents of Clerodendrum colebrookianum Walp., with anti-hypertensive drug targets using computational approaches. The plant has ethno-medicinal importance for the treatment of hypertension and reported to show activity against anti-hypertensive drug targets-Rho-associated coiled-coil protein kinase (ROCK), angiotensin-converting enzyme, and phosphodiesterase 5 (PDE5)...
June 16, 2017: Interdisciplinary Sciences, Computational Life Sciences
https://www.readbyqxmd.com/read/28622402/prevalence-of-concurrent-prescribing-of-ace-is-and-arbs-among-beneficiaries-of-puerto-rico-s-government-sponsored-health-care-plan-during-2012-and-2013
#18
Denise Figueroa-Ríos, José J Hernández-Muñoz, Aileen García-Albarrán, Emily A García-Rodríguez, Glendaliz Méndez-Hernández, Suzette M Vélez-Rivera
OBJECTIVE: Cardiovascular conditions are the second cause of death in Puerto Rico. The individual use of angiotensin-converting enzyme inhibitors (ACE-Is) or angiotensin receptor blockers (ARBs) is considered the first-line therapy for the treatment of several cardiovascular-related medical conditions. However, the concurrent use of these 2 therapeutic classes of drugs is not supported by treatment guidelines. Studies have shown that their concurrent use represents a potential health risk...
June 2017: Puerto Rico Health Sciences Journal
https://www.readbyqxmd.com/read/28621587/treatment-of-severe-hypertension-in-a-14-year-old-child-successful-blood-pressure-control-with-additive-administration-of-captopril-an-angiotensin-converting-enzyme-inhibitor-in-a-patient-with-bilateral-renovascular-hypertension
#19
Xin Zhang, Ying Xu, Xiaoping Chen, Si Wang, Xinran Li, Xin Yan
We report a 14-year-old boy with recurrent episodes of headache caused by uncontrolled hypertension. The diagnosis of renovascular hypertension due to Takaysu arteritis (TA) was made based on an increase in erythrocyte sedimentation rate (ESR) and C-reactive protein (CRP) and computed tomography (CT) image of bilateral renal artery stenosis was taken. Renal scintigraphy revealed normal perfusion and function of the right kidney and severe reduction of the perfusion and function of the left kidney. Careful drug adjustments significantly improved but did not fully control the blood pressure (BP); further, angioplasty, which showed almost occlusion of the left renal artery opening and the minor narrowing of the right renal artery, failed to regain sufficient BP control...
June 16, 2017: Clinical and Experimental Hypertension: CHE
https://www.readbyqxmd.com/read/28621557/a-positive-association-between-the-human-tissue-kallikerin-gene-a2233c-polymorphism-and-blood-pressure-response-to-benazepril
#20
Zhe Hong, Liying Pan, Jiali Fei, Zhangqing Ma, Zongyuan Hong
BACKGROUND: It is generally believed that essential hypertension is influenced by both genetic and environmental factors, as well as their interactions. Tissue kallikrein encoded by the tissue kallikrein gene (KLK1) is a key serine proteinase of kallikrein-kinin system, which is capable of generating potent vasactive peptides, kinins, by selective cleavage of the kininogen substrate. It was reported that the A2233 → C polymorphism in KLK1 gene is associated with essential hypertension...
June 16, 2017: Clinical and Experimental Hypertension: CHE
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