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https://www.readbyqxmd.com/read/28637271/logical-issues-with-the-pressure-natriuresis-theory-of-chronic-hypertension
#1
Theodore W Kurtz, Stephen E DiCarlo, R Curtis Morris
The term "abnormal pressure natriuresis" refers to a subnormal effect of a given level of blood pressure (BP) on sodium excretion. It is widely believed that abnormal pressure natriuresis causes an initial increase in BP to be sustained. We refer to this view as the "pressure natriuresis theory of chronic hypertension." The proponents of the theory contend that all forms of chronic hypertension are sustained by abnormal pressure natriuresis, irrespective of how hypertension is initiated. This theory would appear to follow from "the three laws of long-term arterial pressure regulation" stated by Guyton and Coleman more than 3 decades ago...
December 1, 2016: American Journal of Hypertension
https://www.readbyqxmd.com/read/28635325/effect-of-salt-loading-on-baroreflex-sensitivity-in-reduced-renal-mass-hypertension
#2
Besim Özaykan, Eylem Taskin, Ali Magemizoğlu
BACKGROUND: High dietary salt, as well as renal mass reduction, is known to decrease baroreflex sensitivity in rats. However, the effect of high salt intake on baroreflex sensitivity is unknown in reduced renal mass (RRM) hypertension; therefore, the aim of this study was to investigate the effects of salt loading on arterial baroreflex sensitivity and mean arterial pressure (MAP) in RRM hypertension. METHODS: Both RRM and sham-operated control (SO) rats were loaded with 0...
June 21, 2017: Clinical and Experimental Hypertension: CHE
https://www.readbyqxmd.com/read/28633967/the-effects-of-chronic-faah-inhibition-on-myocardial-lipid-metabolism-in-normotensive-and-doca-salt-hypertensive-rats
#3
Agnieszka Polak, Ewa Harasim-Symbor, Barbara Malinowska, Irena Kasacka, Anna Pędzińska-Betiuk, Jolanta Weresa, Adrian Chabowski
AIMS: There is significant evidence that the endocannabinoid system (ECS) takes part in the regulation of the cardiovascular system in hypertension. It is quite well established that hypertension causes several changes in the heart metabolism, but it is still unknown whether the ECS affects this process. Therefore, we investigated the influence of prolonged ECS activation on myocardial lipid metabolism in deoxycorticosterone acetate (DOCA)-salt hypertensive rats by chronic fatty acid amide hydrolase (FAAH) inhibition...
June 17, 2017: Life Sciences
https://www.readbyqxmd.com/read/28628530/effects-of-salt-loading-and-potassium-supplement-on-the-circadian-blood-pressure-profile-in-salt-sensitive-chinese-patients
#4
Tong-Shuai Guo, Yi Dai, Ke-Yu Ren, Jian-Jun Mu, Jie Ren, Dan Wang, Yang Wang, Chao Chu, Yan Li, Zu-Yi Yuan
BACKGROUND AND OBJECTIVE: Salt-sensitive (SS) patients more frequently showed a nondipper blood pressure pattern and were associated with more serious target organ damage than non-SS patients. We aimed to investigate whether potassium supplement can improve the blunted nocturnal blood pressure fall in SS patients exposed to a high-salt diet. PATIENTS AND METHODS: Approximately 49 normotensive and mildly hypertensive Chinese patients received a study protocol of a 3 days of baseline examination, 7 days of a low-salt diet (3 g NaCl/day), 7 days of a high-salt diet (18 g NaCl/day), and 7 days of a high-salt diet with a potassium supplement (18 g NaCl and 4...
June 16, 2017: Blood Pressure Monitoring
https://www.readbyqxmd.com/read/28623056/the-prevalence-and-risk-factor-control-associated-with-noncommunicable-diseases-in-china-japan-and-korea
#5
Defu Ma, Hiromichi Sakai, Chihiro Wakabayashi, Jong-Sook Kwon, Yoonna Lee, Shuo Liu, Qiaoqin Wan, Kumiko Sasao, Kanade Ito, Ken Nishihara, Peiyu Wang
BACKGROUND: Noncommunicable disease (NCD) has become the leading cause of mortality and disease burden worldwide. METHODS: A cross-sectional survey was carried out to investigate the prevalence of NCDs and risk factor control on dietary behaviors and dietary intake in China, Japan, and Korea. RESULTS: There were significant differences among the three countries on the prevalence of hypertension (24.5% in China, 17.6% in Korea, and 15.2% in Japan), diabetes (8...
June 13, 2017: Journal of Epidemiology
https://www.readbyqxmd.com/read/28619776/a-cross-sectional-study-of-the-prevalence-awareness-treatment-and-control-of-hypertension-in-shenzhen-china
#6
Haitao Li, Xinfeng Yan, Xiaoting Deng, Lizhen Yang, Shaojuan Zhao, Jianfeng Zou, Yi Luo, Sijing Cao
OBJECTIVES: An understanding of the awareness, treatment and control of hypertension is helpful to guide decision-making regarding interventions to reduce the risk for diseases with hypertension as a key risk factor. This study aimed to estimate the prevalence, awareness, treatment, and control of hypertension in Shenzhen, China. METHODS: A cross-sectional study was conducted. We employed multistage cluster random sampling methods to select participants. A survey involving face-to-face interviews was conducted to collect the data...
June 15, 2017: BMJ Open
https://www.readbyqxmd.com/read/28614115/trafficking-and-regulation-of-the-nkcc2-cotransporter-in-the-thick-ascending-limb
#7
Kerim Mutig
PURPOSE OF REVIEW: The kidney Na-K-2Cl cotransporter (NKCC2) is essential for urinary concentration and renal electrolyte handling. Loss of function mutations in the NKCC2 gene cause urinary salt and potassium wasting, whereas excessive NKCC2 function has been linked to high blood pressure. Loop diuretics, targeting the transporter, are instrumental for relieving edema or hypertension. This review focuses on intrinsic mechanisms regulating NKCC2 activity at the posttranslational level, namely its trafficking and phosphorylation...
June 12, 2017: Current Opinion in Nephrology and Hypertension
https://www.readbyqxmd.com/read/28613240/an-isoform-of-nedd4-2-plays-a-pivotal-role-in-electrophysiological-cardiac-abnormalities
#8
Shintaro Minegishi, Tomoaki Ishigami, Hisho Kawamura, Tabito Kino, Lin Chen, Rie Nakashima-Sasaki, Hiroshi Doi, Kengo Azushima, Hiromichi Wakui, Yumi Chiba, Kouichi Tamura
We have previously shown that neural precursor cell-expressed developmentally downregulated gene 4-2 (Nedd4-2) isoforms with a C2 domain are closely related to ubiquitination of epithelial sodium channel (ENaC), resulting in salt-sensitive hypertension by Nedd4-2 C2 targeting in mice. The sodium voltage-gated channel alpha subunit 5 (SCN5A) gene encodes the α subunit of the human cardiac voltage-gated sodium channel (I Na), and the potassium voltage-gated channel subfamily H member 2 (KCNH2) gene encodes rapidly activating delayed rectifier K channels (I Kr)...
June 14, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28612447/obesity-and-the-diagnostic-accuracy-for-primary-aldosteronism
#9
Amit Tirosh, Fady Hannah-Shmouni, Charalampos Lyssikatos, Elena Belyavskaya, Mihail Zilbermint, Smita B Abraham, Maya B Lodish, Constantine A Stratakis
The effects of body mass index on the diagnostic accuracy of primary aldosteronism (PA) are inconsistent and yet important considering the high prevalence and frequent co-occurrence of obesity and hypertension. The current study included 59 adult patients who underwent a stepwise evaluation for PA, using aldosterone to renin ratio for case detection and plasma aldosterone concentration after saline suppression test and/or 24-hour urinary aldosterone after oral sodium loading for case confirmation. Body mass index had a quadratic (U-shaped) correlation with plasma aldosterone concentration, plasma renin activity, aldosterone to renin ratio, and plasma aldosterone concentration after saline suppression test...
June 13, 2017: Journal of Clinical Hypertension
https://www.readbyqxmd.com/read/28604611/eplerenone-resistant-salt-sensitive-hypertension-in-nedd4-2-c2-ko-mice
#10
Tabito Kino, Tomoaki Ishigami, Tsumugi Murata, Hiroshi Doi, Rie Nakashima-Sasaki, Lin Chen, Michiko Sugiyama, Kengo Azushima, Hiromichi Wakui, Shintaro Minegishi, Kouichi Tamura
The epithelial sodium channel (ENaC) plays critical roles in maintaining fluid and electrolyte homeostasis and is located in the aldosterone-sensitive distal nephron (ASDN). We previously found that Nedd4-2 C2 knockout (KO) mice showed salt-sensitive hypertension with paradoxically enhanced ENaC gene expression in ASDN under high oral salt intake. Eplerenone (EPL), a selective aldosterone blocker, is a promising therapeutic option for resistant or/and salt-sensitive hypertension. We examined the effect of EPL on Nedd4-2 C2 KO mice with respect to blood pressure, metabolic parameters, and molecular level changes in ASDN under high oral salt intake...
June 11, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28604387/macrolides-selectively-inhibit-mutant-kcnj5-potassium-channels-that-cause-aldosterone-producing-adenoma
#11
Ute I Scholl, Laura Abriola, Chengbiao Zhang, Esther N Reimer, Mark Plummer, Barbara I Kazmierczak, Junhui Zhang, Denton Hoyer, Jane S Merkel, Wenhui Wang, Richard P Lifton
Aldosterone-producing adenomas (APAs) are benign tumors of the adrenal gland that constitutively produce the salt-retaining steroid hormone aldosterone and cause millions of cases of severe hypertension worldwide. Either of 2 somatic mutations in the potassium channel KCNJ5 (G151R and L168R, hereafter referred to as KCNJ5MUT) in adrenocortical cells account for half of APAs worldwide. These mutations alter channel selectivity to allow abnormal Na+ conductance, resulting in membrane depolarization, calcium influx, aldosterone production, and cell proliferation...
June 12, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28600736/blood-pressure-management-in-children-on-dialysis
#12
F Paglialonga, S Consolo, A Edefonti, G Montini
Hypertension is a leading cause of cardiovascular complications in children on dialysis. Volume overload and activation of the renin-angiotensin-aldosterone system play a major role in the pathophysiology of hypertension. The first step in managing blood pressure (BP) is the careful assessment of ambulatory BP monitoring. Volume control is essential and should start with the accurate identification of dry weight, based on a comprehensive assessment, including bioimpedance analysis and intradialytic blood volume monitoring (BVM)...
June 9, 2017: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/28596554/salt-intake-blood-pressure-and-socioeconomic-disparities-among-government-employees-in-sri-lanka-a-cross-sectional-study
#13
Anuji Upekshika Gamage, Rohini De Alwis Seneviratne, Fahad S Hanna
Our study estimated salt intake, examined the association between blood pressure (BP) and salt intake, and explored the socioeconomic variations in salt intake among administrators (government employees). This is a cross-sectional study. We studied 168 randomly selected administrators aged 30-60 years attached to government offices in Colombo, Sri Lanka. Self-administered questionnaire gathered information on socio-demographic, work-related information, lifestyle practices, and medical history. BP, 24-hour urine collection, and anthropometric indices were measured...
June 8, 2017: Journal of Public Health Policy
https://www.readbyqxmd.com/read/28595556/iodine-prophylaxis-in-the-lights-of-the-last-recommendation-of-who-on-reduction-of-daily-salt-intake
#14
Szybiński Zbigniew
In 1994 international organizations: WHO,UNICEF and ICCIDD indicated salt - Natrium Chloride as a main carrier of iodine in the prophilaxis systems in the iodine deficient areas over the world. Following this recommendation 24 European countries introduced the model of iodine prophylaxis based on the salt iodization. However in 7 European countries only - among them in Poland - salt iodization is mandatory -as the most effective model on the population level. OBJECTIVE: Presentation the method for reduction of the consumption of iodized salt and supplementation of iodine by other iodine carriers...
June 8, 2017: Recent Patents on Endocrine, Metabolic & Immune Drug Discovery
https://www.readbyqxmd.com/read/28595525/obesity-induced-hypertension-new-insights
#15
Christina Antza, Stella Stabouli, Michalis Natsis, Ioannis Doundoulakis, Vasilios Kotsis
BACKGROUND: New insights on the relationship between weight loss and hypertension and the role of the newly approved anti-obesity drugs on hypertension will be discussed Methods: Weight loss is a major factor to reduce blood pressure when a patient with excess weight is advised from the health care provider to change his lifestyle. A healthy lifestyle with reduction in body weight, reduction in caloric intake, increased fruit and vegetables consumption and reduced salt intake concomitant with an increase in physical exercise can reduce body weight and hypertension in overweight and obese patients, but not all obese are able to reduce their blood pressure and lose weight without treatment and special dietary care...
June 7, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28591350/factors-associated-with-chronic-back-pain-in-adults-in-brazil
#16
Deborah Carvalho Malta, Max Moura de Oliveira, Silvânia Suely Caribé de Araújo Andrade, Waleska Teixeira Caiaffa, Maria de Fatima Marinho de Souza, Regina Tomie Ivata Bernal
OBJECTIVE: To identify associations of chronic back pain with sociodemographic characteristics, lifestyles, body mass index, self-reported chronic diseases and health assessment, according to sex. METHODS: We analyzed data from the 2013 National Health Survey, estimated the prevalence and their respective 95% confidence intervals (95%CI) of chronic back pain, according to selected variables and performed adjustment by age and education. RESULTS: 18...
June 1, 2017: Revista de Saúde Pública
https://www.readbyqxmd.com/read/28588673/modulatory-effects-of-hydrochlorothiazide-and-triamterene-on-resistant-hypertension-patients
#17
Haibin Gong, Yun Li, Cheng Zheng, Tian-Tian Du, Bing-Quan Luo, Min Pang
The present study explored the modulatory potential of hydrochlorothiazide and triamterene on resistant hypertension patients. The mechanistic information for resistant hypertension was explored by studying the pressure-natriuresis curves between the salt sensitive population and non-salt sensitive population. A cohort of 23 patients with non-hypertension (NH) (13 males and 10 females; aged from 23 to 62 years), 26 patients with controlled hypertension (CH) (14 males and 12 females; aged from 19 to 72 years) and 23 patients with resistant hypertension (RH) (13 males and 10 females; aged from 19 to 76 years) were selected...
June 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28582822/high-consumption-of-salt-fermented-vegetables-and-hypertension-risk-in-adults-a-12-year-follow-up-study
#18
Hong Ji Song, Seon-Joo Park, Dae Ja Jang, Dae Young Kwon, Hae-Jeung Lee
BACKGROUND AND OBJECTIVES: The aim of this study was to investigate the causal relationship between high consumption of salt-fermented vegetables and hypertension risk in adults. METHODS AND STUDY DESIGN: Data came from the Korean Genome and Epidemiology Study, an ongoing community-based cohort study that began in 2001. In the final analysis, a total of 5,932 participants (men=2,822, women=3,110) was included. Daily energy, nutrient, and major salt-fermented vegetables for Korean (kimchi) intakes were assessed using a semi-quantitative food frequency questionnaire...
2017: Asia Pacific Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28581677/interplay-of-volume-blood-pressure-organ-ischemia-residual-renal-function-and-diet-certainties-and-uncertainties-with-dialytic-management
#19
REVIEW
Ercan Ok, Nathan W Levin, Gulay Asci, Charles Chazot, Huseyin Toz, Mehmet Ozkahya
Extracellular fluid volume overload and its inevitable consequence, hypertension, increases cardiovascular mortality in the long term by leading to left ventricular hypertrophy, heart failure, and ischemic heart disease in dialysis patients. Unlike antihypertensive medications, a strict volume control strategy provides optimal blood pressure control without need for antihypertensive drugs. However, utilization of this strategy has remained limited because of several factors, including the absence of a gold standard method to assess volume status, difficulties in reducing extracellular fluid volume, and safety concerns associated with reduction of extracellular volume...
June 5, 2017: Seminars in Dialysis
https://www.readbyqxmd.com/read/28579314/spot-urine-guided-salt-reduction-in-chronic-kidney-disease-patients
#20
Kiyotaka Uchiyama, Akane Yanai, Yoshitaka Ishibashi
OBJECTIVE: Dietary salt restriction is important in patients with chronic kidney disease (CKD) to reduce hypertension, cardiovascular events, progression of CKD, and mortality. However, recommending salt reduction for patients is difficult without knowing their actual sodium intake. This study evaluated the effectiveness of spot urine-guided salt reduction in CKD outpatients. DESIGN: A prospective cohort study was used. SUBJECTS: This study included a total of 127 adult outpatients (aged 60 ± 18 years, 80 males) with CKD...
May 31, 2017: Journal of Renal Nutrition
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