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https://www.readbyqxmd.com/read/28101724/drug-drug-multicomponent-solid-forms-cocrystal-coamorphous-and-eutectic-of-three-poorly-soluble-antihypertensive-drugs-using-mechanochemical-approach
#1
Jamshed Haneef, Renu Chadha
The present study deals with the application of mechanochemical approach for the preparation of drug-drug multicomponent solid forms of three poorly soluble antihypertensive drugs (telmisartan, irbesartan and hydrochlorothiazide) using atenolol as a coformer. The resultant solid forms comprise of cocrystal (telmisartan-atenolol), coamorphous (irbesartan-atenolol) and eutectic (hydrochlorothiazide-atenolol). The study emphasizes that solid-state transformation of drug molecules into new forms is a result of the change in structural patterns, diminishing of dimers and creating new facile hydrogen bonding network based on structural resemblance...
January 18, 2017: AAPS PharmSciTech
https://www.readbyqxmd.com/read/28101449/immunohistochemical-expression-of-intrarenal-renin-angiotensin-system-components-in-response-to-tempol-in-rats-fed-a-high-salt-diet
#2
Gabriel Cao, Silvana Lorena Della Penna, Nicolás Martín Kouyoumdzian, Marcelo Roberto Choi, Susana Gorzalczany, Belisario Enrique Fernández, Jorge Eduardo Toblli, María Inés Rosón
AIM: To determine the effect of tempol in normal rats fed high salt on arterial pressure and the balance between antagonist components of the renal renin-angiotensin system. METHODS: Sprague-Dawley rats were fed with 8% NaCl high-salt (HS) or 0.4% NaCl (normal-salt, NS) diet for 3 wk, with or without tempol (T) (1 mmol/L, administered in drinking water). Mean arterial pressure (MAP), glomerular filtration rate (GFR), and urinary sodium excretion (UVNa) were measured...
January 6, 2017: World Journal of Nephrology
https://www.readbyqxmd.com/read/28100920/within-country-variation-of-salt-intake-assessed-via-urinary-excretion-in-japan-a-multilevel-analysis-in-all-47-prefectures
#3
Ken Uechi, Keiko Asakura, Shizuko Masayasu, Satoshi Sasaki
Salt intake in Japan remains high; therefore, exploring within-country variation in salt intake and its cause is an important step in the establishment of salt reduction strategies. However, no nationwide evaluation of this variation has been conducted by urinalysis. We aimed to clarify whether within-country variation in salt intake exists in Japan after adjusting for individual characteristics. Healthy men (n=1027) and women (n=1046) aged 20-69 years were recruited from all 47 prefectures of Japan. Twenty-four-hour sodium excretion was estimated using three spot urine samples collected on three nonconsecutive days...
January 19, 2017: Hypertension Research: Official Journal of the Japanese Society of Hypertension
https://www.readbyqxmd.com/read/28098780/adding-salt-to-meals-as-a-risk-factor-of-type-2-diabetes-mellitus-a-case-control-study
#4
Lina Radzeviciene, Rytas Ostrauskas
OBJECTIVE: Type 2 diabetes mellitus (T2DM) is thought to arise from the complex interplay between genetic and environmental factors. It is important to identify modifiable risk factors that may help to reduce the risk of diabetes. Data on salt intake and the risk of type 2 diabetes are limited. The aim of this study was to assess the relationship between adding salt to prepared meals and the risk of type 2 diabetes. METHODS: In a case-control study, we included 234 cases, all of whom were patients aged 35-86 years with a newly confirmed diagnosis of T2DM, and 468 controls that were free of the disease...
January 13, 2017: Nutrients
https://www.readbyqxmd.com/read/28081152/increased-serum-sodium-and-serum-osmolarity-are-independent-risk-factors-for-developing-chronic-kidney-disease-5-year-cohort-study
#5
Masanari Kuwabara, Ichiro Hisatome, Carlos A Roncal-Jimenez, Koichiro Niwa, Ana Andres-Hernando, Thomas Jensen, Petter Bjornstad, Tamara Milagres, Christina Cicerchi, Zhilin Song, Gabriela Garcia, Laura G Sánchez-Lozada, Minoru Ohno, Miguel A Lanaspa, Richard J Johnson
BACKGROUND: Epidemics of chronic kidney disease (CKD) not due to diabetes mellitus (DM) or hypertension have been observed among individuals working in hot environments in several areas of the world. Experimental models have documented that recurrent heat stress and water restriction can lead to CKD, and the mechanism may be mediated by hyperosmolarity that activates pathways (vasopressin, aldose reductase-fructokinase) that induce renal injury. Here we tested the hypothesis that elevated serum sodium, which reflects serum osmolality, may be an independent risk factor for the development of CKD...
2017: PloS One
https://www.readbyqxmd.com/read/28077422/antxr2-knock-out-does-not-result-in-the-development-of-hypertension-in-rats
#6
Xiaoyan Liu, Wen Yuan, Jing Li, Lei Yang, Jun Cai
BACKGROUND: Our recent genetic study as well as robust evidences reported by previous genome-wide association studies (GWASs) have indicated that the single nucleotide polymorphism rs16998073, located near gene anthrax toxin receptor 2 (ANTXR2), was significantly associated with hypertension in Asians and Europeans. The aim of the present study was to determine whether ANTXR2 is the causal gene of hypertension at the 4q21 locus using an ANTXR2 knock-out model. METHODS: Relative expression of ANTXR2 in Wistar-Kyoto rats (WKYs) and spontaneously hypertensive rats (SHRs) were determined by real-time quantitative polymerase chain reaction and western blot analysis...
February 2017: American Journal of Hypertension
https://www.readbyqxmd.com/read/28076917/multi-organ-dysfunction-due-to-bath-salts-are-we-aware-of-this-entity
#7
Rohith Valsalan, Benoj Varghese, Diya Soman, Jonathan Buckmaster, Steven Yew, David Cooper
Methylenedioxypyrovalerone (MDPV) is a synthetic, cathinone-derivative, central nervous system stimulant taken to produce a cocaine- or methamphetamine-like high. Physical manifestations include tachycardia, hypertension, arrhythmias, hyperthermia, sweating, rhabdomyolysis, hyperkalaemia, disseminated intravascular coagulation, oliguria and seizures. We report a patient who presented with severe metabolic acidosis, multi-organ dysfunction, rhabdomyolysis, hyperkalaemia and seizures. This case highlights that even though a urine drug screen for routine psychostimulant drugs is negative, clinicians need to be vigilant about the adverse effects of MDPV as a possible cause of multi-organ dysfunction...
January 2017: Internal Medicine Journal
https://www.readbyqxmd.com/read/28069662/endoplasmic-reticulum-stress-inhibition-limits-the-progression-of-chronic-kidney-disease-in-the-dahl-salt-sensitive-rat
#8
Victoria Yum, Rachel E Carlisle, Chao Lu, Elise Brimble, Jasmine Chahal, Chandak Upagupta, Kjetil Ask, Jeffrey G Dickhout
Proteinuria is one of the primary risk factors for the progression of chronic kidney disease (CKD) and has been implicated in the induction of endoplasmic reticulum (ER) stress. We hypothesized that the suppression of ER stress with a low molecular weight chemical chaperone, 4-phenylbutyric acid (4-PBA), would reduce the severity of CKD and proteinuria in the Dahl salt-sensitive (SS) hypertensive rat. To induce hypertension and CKD, 12-wk-old male rats were placed on a high-salt (HS) diet for 4 wk with or without 4-PBA treatment...
January 1, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/28067240/cd8-t-cells-stimulate-na-cl-co-transporter-ncc-in-distal-convoluted-tubules-leading-to-salt-sensitive-hypertension
#9
Yunmeng Liu, Tonya M Rafferty, Sung W Rhee, Jessica S Webber, Li Song, Benjamin Ko, Robert S Hoover, Beixiang He, Shengyu Mu
Recent studies suggest a role for T lymphocytes in hypertension. However, whether T cells contribute to renal sodium retention and salt-sensitive hypertension is unknown. Here we demonstrate that T cells infiltrate into the kidney of salt-sensitive hypertensive animals. In particular, CD8(+) T cells directly contact the distal convoluted tubule (DCT) in the kidneys of DOCA-salt mice and CD8(+) T cell-injected mice, leading to up-regulation of the Na-Cl co-transporter NCC, p-NCC and the development of salt-sensitive hypertension...
January 9, 2017: Nature Communications
https://www.readbyqxmd.com/read/28062568/renal-collectrin-protects-against-salt-sensitive-hypertension-and-is-downregulated-by-angiotensin-ii
#10
Pei-Lun Chu, Joseph C Gigliotti, Sylvia Cechova, Gabor Bodonyi-Kovacs, Fang Chan, Donna Lee Ralph, Nancy Howell, Kambiz Kalantari, Alexander L Klibanov, Robert M Carey, Alicia A McDonough, Thu H Le
Collectrin, encoded by the Tmem27 gene, is a transmembrane glycoprotein with approximately 50% homology with angiotensin converting enzyme 2, but without a catalytic domain. Collectrin is most abundantly expressed in the kidney proximal tubule and collecting duct epithelia, where it has an important role in amino acid transport. Collectrin is also expressed in endothelial cells throughout the vasculature, where it regulates L-arginine uptake. We previously reported that global deletion of collectrin leads to endothelial dysfunction, augmented salt sensitivity, and hypertension...
January 6, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/28062494/cellular-repressor-of-e1a-stimulated-genes-is-a-critical-determinant-of-vascular-remodeling-in-response-to-angiotensin-ii
#11
Li Yang, Liu Yanxia, Tian Xiaoxiang, Zhang Yan, Song Haixu, Liu Meili, Zhang Xiaolin, Liu Haiwei, Zhang Jian, Zhang Quanyu, Liu Dan, Peng Chengfei, Yan Chenghui, Han Yaling
OBJECTIVE: Cellular repressor of E1A-stimulated genes (CREG) is a lysosomal glycoprotein implicated in maintaining vascular homeostasis. Here, we have hypothesized that CREG is a critical target of intervention for the prevention of hypertensive vascular remodeling. APPROACH AND RESULTS: CREG gene expression was significantly decreased accompanied by an upregulated expression of angiotensin II (Ang II) in remodeled vascular tissues of high salt-induced Dahl salt-sensitive rats and Ang II-induced mice...
January 5, 2017: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/28055260/blood-pressure-control-status-and-relationship-between-salt-intake-and-lifestyle-including-diet-in-hypertensive-outpatients-treated-at-a-general-hospital
#12
Yuko Ohta, Yorio Kimura, Chie Kitaoka, Tomoko Sakata, Isao Abe, Yuhei Kawano
The purpose of the present study was to investigate blood pressure (BP) control and salt intake in hypertensive outpatients treated at a general hospital and to examine the relationship between their lifestyles and amount of salt intake. Subjects comprised 429 hypertensive patients (206 males, 223 females, and average age of 71 ± 11 years). We estimated 24-hour salt excretion using spot urine samples and assessed lifestyle using a self-description questionnaire. Average clinic BP and the number of antihypertensive drugs were 132 ± 11/73 ± 8 mmHg and 1...
2017: Clinical and Experimental Hypertension: CHE
https://www.readbyqxmd.com/read/28054572/relationship-between-urinary-sodium-with-blood-pressure-and-hypertension-among-a-kazakh-community-population-in-xinjiang-china
#13
W Han, Y Hu, Y Tang, F Xue, L Hou, S Liang, B Zhang, W Wang, K Asaiti, H Pang, Z Wang, Y Wang, M Zhang, J Jiang
Urinary sodium levels are reported to be associated with blood pressure in clinical trials and epidemiology studies. Nevertheless, the public health message of reducing sodium intake in free-living community populations remains under debate. Based on an ongoing prospective study initiated in 2012 with a community-based design in Xinjiang, China, 1668 adults (⩾30 years old) were assessed in the current study for associations between urinary sodium and blood pressure and hypertension in a free-living population of Kazakh people...
January 5, 2017: Journal of Human Hypertension
https://www.readbyqxmd.com/read/28053661/psychological-morbidity-and-substance-use-among-patients-with-hypertension-a-hospital-based-cross-sectional-survey-from-south-west-ethiopia
#14
Matiwos Soboka, Esayas Kebede Gudina, Markos Tesfaye
BACKGROUND: Psychological morbidity and substance use disorders have been linked to cardiovascular diseases; affecting patients' medical outcome and quality of life. However, little is known about psychological morbidity and substance use among patients with hypertension in Ethiopia. Therefore, we aimed to assess psychological comorbidity and substance use among hypertensive patients in Southwest Ethiopia. METHODS: A cross-sectional study was conducted among 396 hypertensive patients on follow-up at Jimma University Teaching Hospital in Ethiopia during the study period...
2017: International Journal of Mental Health Systems
https://www.readbyqxmd.com/read/28052878/high-frequency-of-variants-of-candidate-genes-in-black-africans-with-low-renin-resistant-hypertension
#15
Erika S Jones, J David Spence, Adam D Mcintyre, Justus Nondi, Kennedy Gogo, Adeseye Akintunde, Daniel G Hackam, Brian L Rayner
OBJECTIVES: Black subjects tend to retain salt and water, be more sensitive to aldosterone, and have suppression of plasma renin activity. Variants of the renal sodium channel (ENaC, SCNN1B) account for approximately 6% of resistant hypertension (RHT) in Blacks; other candidate genes may be important. METHODS: Six candidate genes associated with low renin-resistant hypertension were sequenced in Black Africans from clinics in Kenya and South Africa. CYP11B2 was sequenced if the aldosterone level was high (primary aldosteronism phenotype); SCNN1B, NEDD4L, GRK4, UMOD, and NPPA genes were sequenced if the aldosterone level was low (Liddle phenotype)...
January 4, 2017: American Journal of Hypertension
https://www.readbyqxmd.com/read/28049996/the-effects-of-the-habitual-consumption-of-miso-soup-on-the-blood-pressure-and-heart-rate-of-japanese-adults-a-cross-sectional-study-of-a-health-examination
#16
Koji Ito, Kenji Miyata, Masahiro Mohri, Hideki Origuchi, Hideo Yamamoto
Objective It is recommended that middle-aged and elderly individuals reduce their salt intake because of the high prevalence of hypertension. The consumption of miso soup is associated with salt intake, and the reduced consumption of miso soup has been recommended. Recent studies have demonstrated that the consumption of miso soup can attenuate an autonomic imbalance in animal models. However, it is unclear whether these results are applicable to humans. This study examined the cross-sectional association between the frequency of miso soup consumption and the blood pressure and heart rate of human subjects...
2017: Internal Medicine
https://www.readbyqxmd.com/read/28035366/inhibitory-effects-of-alpha-lipoic-acid-on-oxidative-stress-in-the-rostral-ventrolateral-medulla-in-rats-with-salt-induced-hypertension
#17
Yu-Peng Huang, Hong-Yan Jin, Hui-Ping Yu
Oxidative stress in the rostral ventrolateral medulla (RVLM) plays an important role in the pathophysiology of hypertension. Alpha‑lipoic acid (ALA) is widely recognized for its potent superoxide inhibitory properties, and it can safely penetrate deep into the brain. The aim of this study was to explore whether ALA supplementation attenuates hypertensive responses and cardiac hypertrophy by decreasing the NAD(P)H oxidase (NOX)-derived overproduction of reactive oxygen species (ROS) in the mitochondria in the RVLM, and thus attenuating the development of salt‑induced hypertension...
February 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28033126/shear-stress-mediated-upregulation-of-gtp-cyclohydrolase-tetrahydrobiopterin-pathway-ameliorates-hypertension-related-decline-in-reendothelialization-capacity-of-endothelial-progenitor-cells
#18
Yong-Ping Bai, Songhua Xiao, Yong-Bo Tang, Zhi Tan, Hailin Tang, Zhi Ren, Haitao Zeng, Zhen Yang
OBJECTIVES: Guanosine triphosphate cyclohydrolase/tetrahydrobiopterin (GTPCH)/(BH4) pathway has been proved to regulate the function of endothelial progenitor cells (EPCs) in deoxycorticosterone acetate-salt hypertensive mice, indicating that GTPCH/BH4 pathway may be an important repair target for hypertension-related endothelial injury. Shear stress is an important nonpharmacologic strategy to modulate the function of EPCs. Here, we investigated the effects of laminar shear stress on the GTPCH/BH4 pathway and endothelial repair capacity of circulating EPCs in hypertension...
December 28, 2016: Journal of Hypertension
https://www.readbyqxmd.com/read/28028193/smooth-muscle-endothelin-b-receptors-regulate-blood-pressure-but-not-vascular-function-or-neointimal-remodeling
#19
Eileen Miller, Alicja Czopek, Karolina M Duthie, Nicholas S Kirkby, Elisabeth E Fransen van de Putte, Sibylle Christen, Robert A Kimmitt, Rebecca Moorhouse, Raphael F P Castellan, Yuri V Kotelevtsev, Rhoda E Kuc, Anthony P Davenport, Neeraj Dhaun, David J Webb, Patrick W F Hadoke
The role of smooth muscle endothelinB (ETB) receptors in regulating vascular function, blood pressure (BP), and neointimal remodeling has not been established. Selective knockout mice were generated to address the hypothesis that loss of smooth muscle ETB receptors would reduce BP, alter vascular contractility, and inhibit neointimal remodeling. ETB receptors were selectively deleted from smooth muscle by crossing floxed ETB mice with those expressing cre-recombinase controlled by the transgelin promoter. Functional consequences of ETB deletion were assessed using myography...
February 2017: Hypertension
https://www.readbyqxmd.com/read/28011882/mycophenolate-mofetil-prevents-cerebrovascular-injury-in-stroke-prone-spontaneously-hypertensive-rats
#20
Isha Dhande, Yaming Zhu, Michael C Braun, M John Hicks, Scott E Wenderfer, Peter A Doris
BACKGROUND AND PURPOSE: Stroke-prone spontaneously hypertensive rats (SHR-A3) develop strokes and progressive kidney disease as a result of naturally occurring genetic variations. We recently identified genetic variants in immune signaling pathways that contribute to end-organ injury. The present study was designed to test the hypothesis that a dysregulated immune response promotes stroke susceptibility. METHODS: 20-week old male SHR-A3 rats were salt loaded and treated with the immunosuppressant mycophenolate mofetil (MMF, 25 mg/kg/day, p...
December 23, 2016: Physiological Genomics
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