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https://www.readbyqxmd.com/read/29224179/antidiabetic-polypill-improves-central-pathology-and-cognitive-impairment-in-a-mixed-model-of-alzheimer-s-disease-and-type-2-diabetes
#1
Carmen Infante-Garcia, Juan Jose Ramos-Rodriguez, Carmen Hierro-Bujalance, Esperanza Ortegon, Eleanor Pickett, Rosemary Jackson, Fernando Hernandez-Pacho, Tara Spires-Jones, Monica Garcia-Alloza
Type 2 diabetes (T2D) is an important risk factor to suffer dementia, being Alzheimer's disease (AD) as the most common form. Both AD and T2D are closely related to aging and with a growing elderly population it might be of relevance to explore new therapeutic approaches that may slow or prevent central complications associated with metabolic disorders. Therefore, we propose the use of the antidiabetic polypill (PP), a pharmacological cocktail, commonly used by T2D patients that include metformin, aspirin, simvastatin, and an angiotensin-converting enzyme inhibitor...
December 9, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/29224013/response-of-renal-podocytes-to-excessive-hydrostatic-pressure-a-pathophysiologic-cascade-in-a-malignant-hypertension-model
#2
Ramzia Abu Hamad, Sylvia Berman, Yafit Hachmo, Moshe Stark, Fadia Hasan, Keren Doenyas-Barak, Shai Efrati
BACKGROUND/AIMS: Renal injuries induced by increased intra-glomerular pressure coincide with podocyte detachment from the glomerular basement membrane (GBM). In previous studies, it was demonstrated that mesangial cells have a crucial role in the pathogenesis of malignant hypertension. However, the exact pathophysiological cascade responsible for podocyte detachment and its relationship with mesangial cells has not been fully elucidated yet and this was the aim of the current study. METHODS: Rat renal mesangial or podocytes were exposed to high hydrostatic pressure in an in-vitro model of malignant hypertension...
December 7, 2017: Kidney & Blood Pressure Research
https://www.readbyqxmd.com/read/29223724/vasoplegia-after-cardiovascular-procedures-pathophysiology-and-targeted-therapy
#3
REVIEW
Shahzad Shaefi, Aaron Mittel, John Klick, Adam Evans, Natalia S Ivascu, Jacob Gutsche, John G T Augoustides
Vasoplegic syndrome, characterized by low systemic vascular resistance and hypotension in the presence of normal or supranormal cardiac function, is a frequent complication of cardiovascular surgery. It is associated with a diffuse systemic inflammatory response and is mediated largely through cellular hyperpolarization, high levels of inducible nitric oxide, and a relative vasopressin deficiency. Cardiopulmonary bypass is a particularly strong precipitant of the vasoplegic syndrome, largely due to its association with nitric oxide production and severe vasopressin deficiency...
October 27, 2017: Journal of Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/29223540/protective-effect-of-coptisine-free-base-on-indomethacin-induced-gastric-ulcers-in-rats-characterization-of-potential-molecular-mechanisms
#4
Chaodan Luo, Hanbin Chen, Yongfu Wang, Guosheng Lin, Cailan Li, Lihua Tan, Ziren Su, Xiaoping Lai, Jianhui Xie, Huifang Zeng
AIMS: The aim of this study was to comparatively investigate the potential gastroprotective effect and underlying mechanisms of coptisine free base (CFB, 8-hydroxy-7, 8-dihydrocoptisine), berberine and lansoprazole against indomethacin-induced gastric ulcer in rats. MATERIALS AND METHODS: CFB (10, 20 and 40mg/kg), berberine (20mg/kg) and lansoprazole (30mg/kg) were orally administrated to rats prior to indometacin ingestion, and gastric lesions were evaluated macroscopically and histologically, and further analyzed by ELISA, qRT-PCR and Western blot...
December 6, 2017: Life Sciences
https://www.readbyqxmd.com/read/29223539/losartan-suppresses-the-kainate-induced-changes-of-angiotensin-at1-receptor-expression-in-a-model-of-comorbid-hypertension-and-epilepsy
#5
Dimitrinka Atanasova, Jana Tchekalarova, Natasha Ivanova, Zlatina Nenchovska, Ekaterina Pavlova, Nina Atanassova, Nikolai Lazarov
AIMS: Experimental and clinical studies have demonstrated that components of renin-angiotensin system are elevated in the hippocampus in epileptogenic conditions. In the present work, we explored the changes in the expression of angiotensin II receptor, type 1 (AT1 receptor) in limbic structures, as well as the effect of the AT1 receptor antagonist losartan in a model of comorbid hypertension and epilepsy. MAIN METHODS: The expression of AT1 receptors was compared between spontaneously hypertensive rats (SHRs) and Wistar rats by using immunohistochemistry in the kainate (KA) model of temporal lobe epilepsy (TLE)...
December 6, 2017: Life Sciences
https://www.readbyqxmd.com/read/29222949/a-switch-from-gaba-inhibition-to-excitation-of-vasopressin-neurons-exacerbates-the-development-angiotensin-ii-dependent-hypertension
#6
Aaron K Korpal, Su Young Han, Daryl O Schwenke, Colin H Brown
Hypothalamic magnocellular neurons secrete vasopressin into the systemic circulation to maintain blood pressure by increasing renal water reabsorption and by vasoconstriction. When blood pressure rises, baroreflex activation normally inhibits vasopressin neurons via activation of GABAergic inputs. However, plasma vasopressin levels are paradoxically elevated in several models of hypertension and in some patients with essential hypertension, despite increased blood pressure. We have previously shown that vasopressin neuron activity is increased early in the development of moderate angiotensin II-dependent hypertension via blunted baroreflex inhibition of vasopressin neurons...
December 9, 2017: Journal of Neuroendocrinology
https://www.readbyqxmd.com/read/29222290/chronic-organ-failure-in-adult-sickle-cell-disease
#7
REVIEW
Elliott Vichinsky
Sickle cell disease is now a chronic adult illness characterized by progressive multiorgan failure, particularly involving the brain and kidney. The etiology is multifactorial; it includes hemolysis and nitric oxide deficiency. As patients age, most experience neurologic insult. Twenty-five percent of older adults have had a clinical stroke and at least half of the population have had a silent infarct, cortical atrophy, and neurocognitive impairment. Periodic screening with neuroimaging and neurocognitive testing is recommended...
December 8, 2017: Hematology—the Education Program of the American Society of Hematology
https://www.readbyqxmd.com/read/29222139/effect-of-losartan-on-rv-dysfunction-results-from-the-double-blind-randomized-redefine-trial-in-adults-with-repaired-tetralogy-of-fallot
#8
Jouke P Bokma, Michiel M Winter, Arie P van Dijk, Hubert W Vliegen, Joost P van Melle, Folkert Meijboom, Martijn C Post, Jacqueline K Berbee, S Matthijs Boekholdt, Maarten Groenink, Aeilko H Zwinderman, Barbara J M Mulder, Berto J Bouma
Background -The effect of angiotensin II receptor blockers (ARBs) on right ventricular (RV) function is still unknown. ARBs are beneficial in patients with acquired left ventricular (LV) dysfunction and recent findings suggested a favorable effect in symptomatic patients with systemic RV dysfunction. The current study aimed to determine the effect of losartan, an ARB, on subpulmonary RV dysfunction in adults after repair of tetralogy of Fallot (rTOF). Methods -REDEFINE is an investigator-initiated, multicenter, prospective, 1:1 randomized, double-blind, placebo-controlled study...
December 8, 2017: Circulation
https://www.readbyqxmd.com/read/29221188/overexpression-of-agt-promotes-bronchopulmonary-dysplasis-via-the-jak-stat-signal-pathway
#9
Lili Shen, Tiancheng Zhang, Hongyan Lu
Angiotensinogen (AGT) is involved in the production of angiotensin II which is the main mediator of action of the rennin-angiotensin system (RAS), whereas the RAS mediates the regulation of sodium homeostasis, blood pressure, and inflammation. The present study aimed to investigate the roles of the AGT in the progression of broncopulmonary dysplasia in premature newborns. By bioinformatics analysis, AGT was found to be the major node in molecular interaction networks of BPD mouse model. Quantitative PCR and western blot analyses were applied to examine AGT expression in A549 cells which were treated with the hyperoxic condition...
November 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/29220885/indexes-of-the-erythropoietin-level-in-the-blood-plasma-of-chronic-heart-failure-patients-with-anemia
#10
Kamala Kh Zahidova
BACKGROUND: Anemia aggravates the disease course and the survival rate of chronic heart failure (CHF) patients. The purpose of the study was to investigate the level of erythropoietin (EPO) in CHF patients with anemic syndrome, with the aim to more accurately assess the severity of the disease and its treatment, depending on the anemia degree. METHODS: Patients with ischemic CHF of I-IV functional class (FC) with and without anemia were examined (total number of patients=208, patients with anemia=174)...
December 7, 2017: Journal of Basic and Clinical Physiology and Pharmacology
https://www.readbyqxmd.com/read/29220556/drug-treatment-of-hypertension-in-sweden-in-relation-to-sex-age-and-comorbidity
#11
Fredrik Wallentin, Björn Wettermark, Thomas Kahan
The authors investigated antihypertensive drug treatment in Sweden using the Stockholm Regional Healthcare Data Warehouse, providing information on all healthcare consultations, diagnoses, hospitalizations, dispensed prescription drugs, sex, and age in 2.1 million persons. This cross-sectional analysis identified 292 428 individuals 20 years or older with hypertension (mean age 68 ± 13 years, 53% women). About half had no diabetes mellitus or cardiovascular comorbidity. The number of dispensed drugs was lower in women than in men (1...
December 8, 2017: Journal of Clinical Hypertension
https://www.readbyqxmd.com/read/29220406/excessively-low-salt-diet-damages-the-heart-through-activation-of-cardiac-pro-renin-receptor-renin-angiotensin-aldosterone-and-sympatho-adrenal-systems-in-spontaneously-hypertensive-rats
#12
Chihiro Okamoto, Yuka Hayakawa, Takuma Aoyama, Hisaaki Komaki, Shingo Minatoguchi, Masamitsu Iwasa, Yoshihisa Yamada, Hiromitsu Kanamori, Masanori Kawasaki, Kazuhiko Nishigaki, Atsushi Mikami, Shinya Minatoguchi
OBJECTIVE: A high salt intake causes hypertension and leads to cardiovascular disease. Therefore, a low salt diet is now recommended to prevent hypertension and cardiovascular disease. However, it is still unknown whether an excessively low salt diet is beneficial or harmful for the heart. METHODS: Wistar Kyoto rats (WKYs) and spontaneously hypertensive rats (SHRs) received normal salt chow (0.9% salt diet) and excessively low salt chow (0.01% salt diet referred to as saltless diet) for 8 weeks from 8 to 16 weeks of age...
2017: PloS One
https://www.readbyqxmd.com/read/29219620/a-common-humoral-background-of-intraocular-and-arterial-blood-pressure-dysregulation
#13
Janusz Skrzypecki, Iwona Grabska-Liberek, Joanna Przybek, Marcin Ufnal
It has been postulated that intraocular pressure, an important glaucoma risk factor, correlates positively with arterial blood pressure (blood pressure). However, results of experimental and clinical studies are often contradictory. We hypothesize that in some hypertensive patients, disturbances in intraocular pressure regulation may depend on biological effects of blood borne hormones underlying a particular type of hypertension, rather than on blood pressure level itself. This review compares the effects of hormones on blood pressure and intraocular pressure, in order to identify a hormonal profile of hypertensive patients with an increased risk of intraocular pressure surge...
December 8, 2017: Current Medical Research and Opinion
https://www.readbyqxmd.com/read/29218625/diuretic-or-beta-blocker-for-hypertensive-patients-already-receiving-acei-arb-and-calcium-channel-blocker
#14
Min-Shan Tsai, Chao-Hsiun Tang, Chia-Ying Lin, Po-Ya Chuang, Nai-Chuan Chen, Chien-Hua Huang, Wei-Tien Chang, Tzung-Dau Wang, Ping-Hsun Yu, Wen-Jone Chen
BACKGROUND: In patients already receiving combination of angiotensin-converting enzyme inhibitor (ACEI)/angiotensin receptor blocker (ARB) and calcium channel blocker (CCB), whether the choice of additional diuretic or beta-blocker affects the cardiovascular and cerebrovascular outcomes remains unclear. METHODS: A total of 13,551 patients who were concurrently receiving three anti-hypertensive agents of different classes through outpatient clinics during 2004-2006 were identified from the National Health Insurance Research Database of Taiwan...
December 8, 2017: Cardiovascular Drugs and Therapy
https://www.readbyqxmd.com/read/29217634/anthracycline-cardiotoxicity-an-update-on-mechanisms-monitoring-and-prevention
#15
REVIEW
Peter A Henriksen
Anthracycline chemotherapy causes dose-related cardiomyocyte injury and death leading to left ventricular dysfunction. Clinical heart failure may ensue in up to 5% of high-risk patients. Improved cancer survival together with better awareness of the late effects of cardiotoxicity has led to growing recognition of the need for surveillance of anthracycline-treated cancer survivors with early intervention to treat or prevent heart failure. The main mechanism of anthracycline cardiotoxicity is now thought to be through inhibition of topoisomerase 2β resulting in activation of cell death pathways and inhibition of mitochondrial biogenesis...
December 7, 2017: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/29217510/loss-of-vascular-myogenic-tone-in-mir-143-145-knockout-mice-is-associated-with-hypertension-induced-vascular-lesions-in-small-mesenteric-arteries
#16
Johan Holmberg, Anirban Bhattachariya, Azra Alajbegovic, Catarina Rippe, Mari Ekman, Diana Dahan, Tran Thi Hien, Thomas Boettger, Thomas Braun, Karl Swärd, Per Hellstrand, Sebastian Albinsson
OBJECTIVE: Pressure-induced myogenic tone is involved in autoregulation of local blood flow and confers protection against excessive pressure levels in small arteries and capillaries. Myogenic tone is dependent on smooth muscle microRNAs (miRNAs), but the identity of these miRNAs is unclear. Furthermore, the consequences of altered myogenic tone for hypertension-induced damage to small arteries are not well understood. APPROACH AND RESULTS: The importance of smooth muscle-enriched microRNAs, miR-143/145, for myogenic tone was evaluated in miR-143/145 knockout mice...
December 7, 2017: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/29217423/pre-transplant-at1r-antibodies-correlate-with-early-allograft-rejection
#17
Alison J Gareau, Chris Wiebe, Denise Pochinco, Ian W Gibson, Julie Ho, David N Rush, Peter W Nickerson
Studies investigating the potential pathogenic effects of non-HLA antibodies (Ab) have identified Ab against the angiotensin II type 1 receptor (AT1R-Ab) as a risk factor for rejection and kidney graft loss. This study sought to validate the risk of AT1R-Ab for acute rejection and to explore the role of other non-HLA Abs in this capacity. Pre- and post-transplant sera from a cohort of 101 patients (n=453 samples total) were tested for AT1R-Ab and other non-HLA Ab using a commercially available ELISA kit and the Luminex platform, respectively...
December 4, 2017: Transplant Immunology
https://www.readbyqxmd.com/read/29216260/angiotensin-receptor-blockers-are-associated-with-lower-mortality-than-ace-inhibitors-in-predialytic-stage-5-chronic-kidney-disease-a-nationwide-study-of-therapy-with-renin-angiotensin-system-blockade
#18
Chih-Ching Lin, Yu-Te Wu, Wu-Chang Yang, Min-Juei Tsai, Jia-Sin Liu, Chi-Yu Yang, Szu-Yuan Li, Shuo-Ming Ou, Der-Cherng Tarng, Chih-Cheng Hsu
Dual renin angiotensin system (RAS) blockade using angiotensin-receptor blockers (ARBs) in combination with angiotensin converting enzyme inhibitors (ACEIs) is reported to improve proteinuria in both diabetic and non-diabetic patients. However, its renoprotective effect and safety remain uncertain in patients with advanced chronic kidney disease (CKD). From January 1, 2000 through June 30, 2009, we enrolled 14,117 pre-dialytic stage 5 CKD patients with serum creatinine >6mg/dL and hematocrit <28% under the treatment with erythropoiesis stimulating agents and RAS blockade...
2017: PloS One
https://www.readbyqxmd.com/read/29216228/primary-prevention-of-myocardial-infarction-with-angiotensin-converting-enzyme-inhibitors-and-angiotensin-receptor-blockers-in-hypertensive-patients-with-rheumatoid-arthritis-a-nationwide-cohort-study
#19
Ting-Tse Lin, Cho-Kai Wu, Min-Tsun Liao, Yao-Hsu Yang, Pau-Chung Chen, Dong-Feng Yeih, Lian-Yu Lin
BACKGROUND: Rheumatoid arthritis (RA) is regarded as a high risk factor for myocardial infarction. Hypertension is a major modifiable risk factor contributing to increased risk of myocardial infarction (MI). Dual blood pressure (BP)-lowering and anti-inflammatory effect of renin-angiotensin-system (RAS) inhibitors may possess protective effect from MI in RA population. However, treatment of hypertension with RAS inhibitors and MI in RA population remains unclear. METHODS: We investigated whether RAS blockade could decrease risk of incident MI in hypertensive patients with RA...
2017: PloS One
https://www.readbyqxmd.com/read/29215878/ultra-fast-screening-of-a-novel-moderate-hydrophilic-angiotensin-converting-enzyme-inhibitory-peptide-ryl-from-silkworm-pupa-using-fe-doped-silkworm-excrement-derived-biocarbon-waste-conversion-by-waste
#20
Long Liu, Yanan Wei, Qing Chang, Huaju Sun, Kungang Chai, Zuqiang Huang, Zhenxia Zhao, Zhongxing Zhao
A novel moderate hydrophilic peptide (RYL) with high ACE inhibitory activity was ultra-fast screened via a concept of waste conversion using waste. This novel peptide was screened from silkworm Pupa using Fe-doped porous biocarbon (FL/Z-SE) derived from silkworm excrement. FL/Z-SE possessed magnetic property and specific selection for peptides due to Fe's dual functions. The selected RYL with moderate hydrophilicity (LogP=-0.22) exhibited a comparatively high ACE inhibitory activity (IC<u>50</u>=3...
December 7, 2017: Journal of Agricultural and Food Chemistry
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