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Aldosteronism

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https://www.readbyqxmd.com/read/28239828/the-relation-of-the-serum-aldosterone-level-and-central-serous-chorioretinopathy-a-pilot-study
#1
Q Gong, X-H Sun, S-T Yuan, Q-H Liu
OBJECTIVE: The aim of this study was to investigate the serum aldosterone level and abnormal levels of mineral corticoid in patients with the central serous chorioretinopathy (CSC). PATIENTS AND METHODS: All recruited patients with CSC received fundus fluorescein angiography (FFA), enhanced depth imaging spectral-domain optical coherence tomography (EDI-OCT) and serum aldosterone assay. The patients were classified into spontaneously resolved group and unresolved group according to a 3-months follow-up of Optical Coherence Tomography (OCT) examination...
February 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28238630/primate-response-to-angiotensin-infusion-and-high-sodium-intake-differ-by-sodium-lithium-countertransport-phenotype
#2
Kimberly D Spradling-Reeves, Robert E Shade, Joseph R Haywood, Laura A Cox
An increased level of sodium-lithium countertransport (SLC) activity has been associated with salt-sensitive hypertension. Previous findings have suggested that dysregulation of the renin-angiotensin-aldosterone system (RAAS) may be involved in the mechanism linking elevated SLC activity and hypertension. Therefore, baboons with different levels of SLC activity were given two diets differing in sodium content, with and without an angiotensin II (ANG II) infusion, to investigate the relationship between SLC activity, the RAAS, and physiological regulation by sodium...
February 3, 2017: Journal of the American Society of Hypertension: JASH
https://www.readbyqxmd.com/read/28236585/the-importance-of-genetic-counseling-and-genetic-screening-a-case-report-of-a-16-year-old-boy-with-resistant-hypertension-and-severe-hypokalemia
#3
Ze-Min Kuang, Ying Wang, Jia-Jie Wang, Jing-Hua Liu, Rong Zeng, Qi Zhou, Zhen-Qiu Yu, Long Jiang
Liddle's syndrome, an autosomal dominant form of monogenic hypertension, is characterized by salt-sensitive hypertension with early penetrance, hypokalemia, metabolic alkalosis, suppression of plasma rennin activity and aldosterone secretion, and a clear-cut response to epithelial sodium channel blockers but not spironolactone therapy. Here, we describe the case of a 16-year-old boy patient with resistant hypertension (maintain 170-180/100-110 mm Hg after administration four kinds of antiypertensive drugs) and severe hypokalemia...
February 3, 2017: Journal of the American Society of Hypertension: JASH
https://www.readbyqxmd.com/read/28228651/adipokines-and-cardiovascular-disease-a-comprehensive-review
#4
Ales Smekal, Jan Vaclavik
Adipokines are peptides that signal the functional status of adipose tissue to the brain and other target organs. In adipose tissue dysfunction, adipokine secretion is altered, and this can contribute to a spectrum of obesity-associated conditions including cardiovascular disease. Some adipokines have anti-inflammatory and cardioprotective effects (omentin, apelin, adiponectin). Others are pro-inflammatory with negative impact on cardiovascular function (leptin, visfatin, resistin, adipocyte fatty-acid-binding protein)...
February 16, 2017: Biomedical Papers of the Medical Faculty of the University Palacký, Olomouc, Czechoslovakia
https://www.readbyqxmd.com/read/28223469/maternal-gestational-hypertension-induced-sensitization-of-angiotensin-ii-hypertension-is-reversed-by-renal-denervation-or-angiotensin-converting-enzyme-inhibition-in-rat-offspring
#5
Baojian Xue, Haifeng Yin, Fang Guo, Terry G Beltz, Robert L Thunhorst, Alan Kim Johnson
Numerous findings demonstrate that there is a strong association between maternal health during pregnancy and cardiovascular disease in adult offspring. The purpose of the present study was to test whether maternal gestational hypertension modulates brain renin-angiotensin-aldosterone system (RAAS) and proinflammatory cytokines that sensitizes angiotensin II-elicited hypertensive response in adult offspring. In addition, the role of renal nerves and the RAAS in the sensitization process was investigated. Reverse transcription polymerase chain reaction analyses of structures of the lamina terminalis and paraventricular nucleus indicated upregulation of mRNA expression of several RAAS components and proinflammatory cytokines in 10-week-old male offspring of hypertensive dams...
February 21, 2017: Hypertension
https://www.readbyqxmd.com/read/28223322/eta-receptors-blockade-by-activating-etb-receptors-increases-vascular-permeability-and-induces-exaggerated-fluid-retention
#6
Magali Vercauteren, Frederic Trensz, Anne Pasquali, Christophe Cattaneo, Daniel S Strasser, Patrick Hess, Marc Iglarz, Martine Clozel
Endothelin receptor antagonists have been associated with fluid retention. It has been suggested that, of the two endothelin receptor subtypes, ETB receptors should not be blocked, because of their involvement in natriuresis and diuresis. Surprisingly, clinical data suggest that ETA-selective antagonists pose a greater risk of fluid overload than dual antagonists. The purpose of this study was to evaluate the contribution of each endothelin receptor to fluid retention and vascular permeability in rats. Sitaxentan and ambrisentan as ETA-selective antagonists, bosentan and macitentan as dual antagonists were used as representatives of each class, respectively...
February 21, 2017: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/28222463/changes-in-body-mass-index-in-pheochromocytoma-patients-following-adrenalectomy
#7
Ariadni Spyroglou, Christian Adolf, Stefanie Hahner, Marcus Quinkler, Roland Ladurner, Martin Reincke, Felix Beuschlein
Catecholamine excess from pheochromocytoma results in cardiovascular symptoms such as arterial hypertension and tachycardia and induces metabolic alterations including glucose intolerance and increase in resting metabolic rate. The objective of our study was to investigate the effect of surgical cure of pheochromocytoma on body-mass-index and the correlation of body-mass-index changes to preoperative endocrine parameters. Pheochromocytoma patients from the Munich ENSAT Registry were matched (1:2) for age and gender to patients from the German Conn's Registry, who had undergone surgery for aldosterone-producing-adenomas...
February 21, 2017: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
https://www.readbyqxmd.com/read/28214884/transient-receptor-potential-melastatin-4-trpm4-contributes-to-high-salt-diet-mediated-early-stage-endothelial-injury
#8
Xiao-Qing Ding, Tao Ban, Zeng-Yan Liu, Jie Lou, Liang-Liang Tang, Jia-Xin Wang, Wen-Feng Chu, Dan Zhao, Bin-Lin Song, Zhi-Ren Zhang
BACKGROUND/AIMS: The present study investigated whether the transient receptor potential melastatin 4 (TRPM4) channel plays a role in high salt diet (HSD)-induced endothelial injuries. METHODS: Western blotting and immunofluorescence were used to examine TRPM4 expression in the mesenteric endothelium of Dahl salt-sensitive (SS) rats fed a HSD. The MTT, TUNEL, and transwell assays were used to evaluate the cell viability, cell apoptosis, and cell migration, respectively, of human umbilical vein endothelial cells (HUVECs)...
February 16, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28212710/ctrp1-in-liver-disease
#9
P Shabani, S Emamgholipour, M Doosti
Nonalcoholic fatty liver disease (NAFLD) is a chronic liver disease occurs in significant percentage of general population. NAFLD is closely associated with entire spectrum of metabolic-related disorders including diabetes, obesity, and cardiovascular diseases. Considering several similar pathways underpinning metabolic disorders, presence of common molecular mediators contributing to pathomechanism of these disorders is expected. Mounting evidence has demonstrated important role of adipokines in the context of NAFLD...
2017: Advances in Clinical Chemistry
https://www.readbyqxmd.com/read/28209765/renin-angiotensin-system-inhibition-worsening-renal-function-and-outcome-in-heart-failure-patients-with-reduced-and-preserved-ejection-fraction-a-meta-analysis-of-published-study-data
#10
Iris E Beldhuis, Koen W Streng, Jozine M Ter Maaten, Adriaan A Voors, Peter van der Meer, Patrick Rossignol, John J V McMurray, Kevin Damman
BACKGROUND: Renin-angiotensin aldosterone system (RAAS) inhibitors significantly improve outcome in heart failure (HF) patients with reduced ejection fraction (HFREF), irrespective of the occurrence of worsening renal function (WRF). However, in HF patients with preserved ejection fraction (HFPEF), RAAS inhibitors have not been shown to improve outcome but are still frequently prescribed. METHODS AND RESULTS: Random effect meta-analysis was performed to investigate the relationship between RAAS inhibitor therapy, WRF in both HF phenotypes, and mortality...
February 2017: Circulation. Heart Failure
https://www.readbyqxmd.com/read/28202884/neurohumoral-modulation-during-waon-therapy-in-chronic-heart-failure%C3%A3-subanalysis-of-waon-chf-study
#11
Tomoko Ichiki, John C Burnett, Christopher G Scott, Denise M Heublein, Masaaki Miyata, Koichiro Kinugawa, Teruo Inoue, Chuwa Tei
BACKGROUND: Heart failure (HF) is a disease of neurohumoral dysfunction and current pharmacological therapies for HF have not improved mortality rates, thus requiring additional new strategies. Waon therapy for HF patients may be a complementary strategy with peripheral vasodilation via nitric oxide. We hypothesized that Waon therapy would improve neurohumoral factors, such as natriuretic peptides (NP) and the renin-angiotensin-aldosterone system (RAAS) in HF.Methods and Results:Plasma samples were collected from patients enrolled in the WAON-CHF Study (Waon therapy (n=77) or control (n=73)) before and after the treatment...
February 16, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/28202622/the-hypertension-pandemic-an-evolutionary-perspective
#12
REVIEW
Bernard C Rossier, Murielle Bochud, Olivier Devuyst
Hypertension affects over 1.2 billion individuals worldwide and has become the most critical and expensive public health problem. Hypertension is a multifactorial disease involving environmental and genetic factors together with risk-conferring behaviors. The cause of the disease is identified in ∼10% of the cases (secondary hypertension), but in 90% of the cases no etiology is found (primary or essential hypertension). For this reason, a better understanding of the mechanisms controlling blood pressure in normal and hypertensive patients is the aim of very active experimental and clinical research...
March 2017: Physiology
https://www.readbyqxmd.com/read/28201968/common-drugs-for-stabilization-of-renal-function-in-the-progression-of-diabetic-nephropathy-and-their-relations-with-hypertension-therapy
#13
Yuxuan Wang, Chengcheng Wang, Xiuli Zhang, Harvest F Gu, Liang Wu
Diabetic nephropathy is characterized by hypertension, progressive albuminuria, glomerulosclerosis and declines in glomerular filtration rate leading to end stage renal disease. Although the pathogenesis of diabetic nephropathy is not fully understood, current treatment of the patients with diabetic nephropathy is mainly based upon the control of hyperglycaemia and management of blood pressures. Several drugs, which are originally developed for hypertension therapy, have been adopted for stabilization of renal function in diabetic nephropathy...
February 14, 2017: Current Diabetes Reviews
https://www.readbyqxmd.com/read/28200011/increased-aldosterone-release-during-head-up-tilt-in-early-primary-hypertension
#14
Annemarie Reinold, Andreas Schneider, Tatjana Kalizki, Ulrike Raff, Markus P Schneider, Roland E Schmieder, Bernhard M W Schmidt
No abstract text is available yet for this article.
February 15, 2017: American Journal of Hypertension
https://www.readbyqxmd.com/read/28199472/resequencing-study-identifies-rare-renin-angiotensin-aldosterone-system-variants-associated-with-blood-pressure-salt-sensitivity-the-gensalt-study
#15
Tanika N Kelly, Changwei Li, James E Hixson, Dongfeng Gu, Dabeeru C Rao, Jianfeng Huang, Treva K Rice, Jichun Chen, Jie Cao, Jianxin Li, Christopher E Anderson, Jiang He
No abstract text is available yet for this article.
February 11, 2017: American Journal of Hypertension
https://www.readbyqxmd.com/read/28193708/case-of-primary-aldosteronism-with-discordant-hormonal-and-computed-tomographic-findings
#16
Laurence Amar, Yehonatan Sharabi, Gian Paolo Rossi, Emmanuelle Vidal-Petiot, Anna F Dominiczak, Paolo Mulatero, Anne-Laure Faucon, Neeraj Dhaun, Rhian M Touyz, Mohammed Barigou, Aurelien Lorthioir
No abstract text is available yet for this article.
February 13, 2017: Hypertension
https://www.readbyqxmd.com/read/28191524/renin-angiotensin-aldosterone-system-in-insulin-resistance-and-metabolic-syndrome
#17
Undurti N Das
Obesity and its consequent complications such as hypertension and metabolic syndrome are increasing in incidence in almost all countries. Insulin resistance is common in obesity. Renin- angiotensin system (RAS) is an important target in the treatment of hypertension and drugs that act on RAS improve insulin resistance and decrease the incidence of type 2 diabetes mellitus, explaining the close association between hypertension and type 2 diabetes mellitus. RAS influences food intake by modulating the hypothalamic expression of neuropeptide Y and orexins via AMPK dephosphorylation...
June 1, 2016: Journal of Translational Internal Medicine
https://www.readbyqxmd.com/read/28190873/the-role-of-uric-acid-in-hypertension-of-adolescents-prehypertension-and-salt-sensitivity-of-blood-pressure
#18
Yang Wang, Jia-Wen Hu, Yong-Bo Lv, Chao Chu, Ke-Ke Wang, Wen-Ling Zheng, Yu-Meng Cao, Zu-Yi Yuan, Jian-Jun Mu
Uric acid is the end product of purine metabolism. Metabolic disorders of uric acid are associated with many disease states. Substantial evidence suggests the possible role of uric acid as a mediator of high blood pressure. Elevated uric acid is closely associated with new onset essential hypertension in adolescents and prehypertension; and urate-lowering agents can significantly improve these early stages of hypertension. Uric acid also influences salt sensitivity of blood pressure through two phases. Local renin-angiotensin-aldosterone system activation initiates renal damage, arteriolopathy, and endothelium dysfunction, which is followed by the dysregulation of sodium homeostasis, thereby leading to increased salt sensitivity...
February 13, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28190867/the-impact-of-the-clinical-cyp11b2-mutation-v386a-strongly-depends-on-the-enzyme-s-genetic-background
#19
Jens Neunzig, Yogan Khatri, Rita Bernhardt
Human cytochrome P450 11B2 (CYP11B2) is an essential enzyme in the steroid hormone biosynthesis, which catalyzes the last three reaction steps of the aldosterone synthesis. These reactions comprise a hydroxylation at position C11 of the steroid intermediate deoxycorticosterone yielding corticosterone, followed by a hydroxylation at position C18 yielding 18-hydroxy-corticosterone and a subsequent oxidation of the hydroxyl group at C18, which results in the formation of aldosterone. Alterations in the amino acid sequence of CYP11B2 often cause severe disease patterns...
February 10, 2017: Endocrine Journal
https://www.readbyqxmd.com/read/28187982/the-renal-trpv4-channel-is-essential-for-adaptation-to-increased-dietary-potassium
#20
Mykola V Mamenko, Nabila Boukelmoune, Viktor N Tomilin, Oleg L Zaika, V Behrana Jensen, Roger G O'Neil, Oleh M Pochynyuk
To maintain potassium homeostasis, kidneys exert flow-dependent potassium secretion to facilitate kaliuresis in response to elevated dietary potassium intake. This process involves stimulation of calcium-activated large conductance maxi-K (BK) channels in the distal nephron, namely the connecting tubule and the collecting duct. Recent evidence suggests that the TRPV4 channel is a critical determinant of flow-dependent intracellular calcium elevations in these segments of the renal tubule. Here, we demonstrate that elevated dietary potassium intake (five percent potassium) increases renal TRPV4 mRNA and protein levels in an aldosterone-dependent manner and causes redistribution of the channel to the apical plasma membrane in native collecting duct cells...
February 7, 2017: Kidney International
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