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Primary aldosterone

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https://www.readbyqxmd.com/read/29453922/a-short-review-of-primary-aldosteronism-in-a-question-and-answer-fashion
#1
Frederick-Anthony Farrugia, Nicolaos Zavras, Georgios Martikos, Panagiotis Tzanetis, Anestis Charalampopoulos, Evangelos P Misiakos, Dimitrios Sotiropoulos, Nikolaos Koliakos
OBJECTIVES: The aim of this study was to present up to date information concerning the diagnosis and treatment of primary aldosteronism (PA). PA is the most common cause of endocrine hypertension. It has been reported up to 24% of selective referred hypertensive patients. METHODS: We did a search in Pub-Med and Google Scholar using the terms: PA, hyperaldosteronism, idiopathic adrenal hyperplasia, diagnosis of PA, mineralocorticoid receptor antagonists, adrenalectomy, and surgery...
January 1, 2018: Endocrine Regulations
https://www.readbyqxmd.com/read/29445488/glucocorticoid-remediable-aldosteronism-in-a-young-adult-with-a-family-history-of-conn-s-syndrome
#2
Heiko Methe, Sinan Pehlivanli
Glucocorticoid-remediable aldosteronism is a hereditary form of primary hyperaldosteronism and the most common monogenic cause of hypertension. We present the case of a 24-year-old man with a family history of Conn's syndrome. Yet, in the index patient, classical characteristics of mineralocorticoid excess could be reversed by exogenous glucocorticoids.
February 2018: Clinical Case Reports
https://www.readbyqxmd.com/read/29440332/downregulated-serum-14-15-epoxyeicosatrienoic-acid-is-associated-with-abdominal-aortic-calcification-in-patients-with-primary-aldosteronism
#3
Pinming Liu, Shaoling Zhang, Jingwei Gao, Ying Lin, Guangzi Shi, Wanbing He, Rhian M Touyz, Li Yan, Hui Huang
Patients with primary aldosteronism (PA) have increased risk of target-organ damage, among which vascular calcification is an important indicator of cardiovascular mortality. 14, 15-Epoxyeicosatrienoic acid (14, 15-EET) has been shown to have beneficial effects in vascular remodeling. However, whether 14, 15-EET associates with vascular calcification in PA is unknown. Thus, we aimed to investigate the association between 14, 15-EET and abdominal aortic calcification (AAC) in patients with PA. Sixty-nine patients with PA and 69 controls with essential hypertension, matched for age, sex, and blood pressure, were studied...
February 12, 2018: Hypertension
https://www.readbyqxmd.com/read/29440130/cardiac-magnetic-resonance-imaging-of-myocardial-mass-and-fibrosis-in-primary-aldosteronism
#4
Marianne Aardal Grytaas, Kjersti Sellevåg, Hrafnkell Baldur Thordarson, Eystein Sverre Husebye, Kristian Løvås, Terje Hjalmar Larsen
BACKGROUND: Primary aldosteronism (PA) is associated with increased cardiovascular morbidity, presumably due to left ventricular (LV) hypertrophy and fibrosis. However, the degree of fibrosis has not been extensively studied. Cardiac magnetic resonance imaging (CMR) contrast enhancement and novel sensitive T1 mapping to estimate increased extracellular volume (ECV) are available to measure the extent of fibrosis. OBJECTIVES: To assess LV mass and fibrosis before and after treatment of PA using CMR with contrast enhancement and T1 mapping...
February 12, 2018: Endocrine Connections
https://www.readbyqxmd.com/read/29437744/can-aldosterone-break-your-heart-takotsubo-cardiomyopathy-in-a-patient-with-newly-diagnosed-primary-aldosteronism
#5
Dominika M Zoltowska, Yashwant Agrawal, Jagadeesh K Kalavakunta
We report a case of a 47-year-old Caucasian woman with medical history of hypertension and hypokalemia, who presented to Emergency Room with symptoms resembling acute coronary syndrome ST-segment elevation myocardial infarction. Coronary angiogram revealed clear coronary arteries and left ventriculogram confirmed the diagnosis of Takotsubo cardiomyopathy. She was treated conservatively with good clinical outcome. Subsequent testing revealed underlying primary aldosteronism.
February 5, 2018: BMJ Case Reports
https://www.readbyqxmd.com/read/29436637/nicotinamide-phosphoribosyltransferase-and-the-hypothalamic-pituitary-adrenal-axis-of-the-rat
#6
Piotr Celichowski, Karol Jopek, Paulina Milecka, Marta Szyszka, Marianna Tyczewska, Ludwik K Malendowicz, Marcin Ruciński
Nicotinamide phosphoribosyltransferase (Nampt), also termed visfatin, catalyses the rate‑limiting step in the nicotinamide adenine dinucleotide (NAD) salvage pathway. In addition to its intracellular function (iNampt), extracellular Nampt (eNampt) also affects numerous intracellular signalling pathways. The current study investigated the role of Nampt in the regulation of the hypothalamic‑pituitary‑adrenal (HPA) axis in rats. At 1 h after intraperitoneal administration of eNampt (4 µg/100 g) in adult male rats, serum adrenocorticotropic hormone(ACTH) and aldosterone levels remained unchanged, while corticosterone levels were notably elevated compared with the control group, as determined by ELISA...
February 7, 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29433578/resistant-hypertension-on-treatment-reshypot-sequential-nephron-blockade-compared-to-dual-blockade-of-the-renin-angiotensin-aldosterone-system-plus-bisoprolol-in-the-treatment-of-resistant-arterial-hypertension-study-protocol-for-a-randomized-controlled-trial
#7
Elizabeth do Espirito Santo Cestário, Letícia Aparecida Barufi Fernandes, Luiz Tadeu Giollo-Júnior, Jéssica Rodrigues Roma Uyemura, Camila Suemi Sato Matarucco, Manoel Idelfonso Paz Landim, Luciana Neves Cosenso-Martin, Lúcia Helena Bonalume Tácito, Heitor Moreno, José Fernando Vilela-Martin, Juan Carlos Yugar-Toledo
BACKGROUND: Resistant hypertension is characterized when the blood pressure (BP) remains above the recommended goal after taking three antihypertensive drugs with synergistic actions at their maximum recommended tolerated doses, preferably including a diuretic. Identifying the contribution of intravascular volume and serum renin in maintaining BP levels could help tailor more effective hypertension treatment, whether acting on the control of intravascular volume or sodium balance, or acting on the effects of the renin-angiotensin-aldosterone system (RAAS) on the kidney...
February 12, 2018: Trials
https://www.readbyqxmd.com/read/29432258/overview-of-aldosterone-related-genetic-syndromes-and-recent-advances
#8
Maria-Christina Zennaro, Fabio L Fernandes-Rosa, Sheerazed Boulkroun
PURPOSE OF REVIEW: Primary aldosteronism is the most common form of secondary hypertension. Early diagnosis and treatment are key to cure of hypertension and prevention of cardiovascular complications. Recent genetic discoveries have improved our understanding on the pathophysiology of aldosterone production and triggered the development of new diagnostic procedures and targeted treatments for primary aldosteronism. RECENT FINDINGS: Different inherited genetic abnormalities distinguish specific forms of familial hyperaldosteronism...
February 8, 2018: Current Opinion in Endocrinology, Diabetes, and Obesity
https://www.readbyqxmd.com/read/29429439/clinical-characteristics-and-causes-of-heart-failure-adherence-to-treatment-guidelines-and-mortality-of-patients-with-acute-heart-failure-experience-at-groote-schuur-hospital-cape-town-south-africa
#9
P Z Szymanski, M Badri, B M Mayosi
BACKGROUND: There is limited information on acute heart failure (AHF) and its treatment in sub-Saharan Africa. OBJECTIVE: To describe the clinical characteristics and causes of heart failure (HF), adherence to HF treatment guidelines, and mortality of patients with AHF presenting to Groote Schuur Hospital (GSH), Cape Town, South Africa. METHODS: This sub-study of The Sub-Saharan Africa Survey of Heart Failure (THESUS-HF) was a prospective and observational survey that focused on the enrolment and follow-up of additional patients with AHF presenting to GSH and entered into the existing registry after publication of the primary THESUS-HF article in 2012...
February 1, 2018: South African Medical Journal, Suid-Afrikaanse Tydskrif Vir Geneeskunde
https://www.readbyqxmd.com/read/29422627/the-influence-of-the-peripheral-cortisol-fluctuation-on-the-success-rate-of-adrenal-venous-sampling
#10
Chin-Chen Chang, Bo-Ching Lee, Kao-Lang Liu, Yeun-Chung Chang, Vin-Cent Wu, Kuo-How Huang, Tung-Hsin Wu
In this retrospective study, we aimed to estimate the influence of fluctuating peripheral plasma cortisol concentration (PCC) on the success rate of non-stimulated adrenal venous sampling (AVS) and to demonstrate its fluctuating pattern. Overall, 107 consecutive patients with primary aldosteronism undergoing AVS between July 2015-January 2017 were included. The peripheral vein was sampled at 4 separate time points during the procedure: after femoral puncture, during left adrenal sampling, during right adrenal sampling, and before procedural ending...
February 8, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29416526/aldosterone-blocks-rat-stem-leydig-cell-development-in-vitro
#11
Jingwei Zhang, Bisheng Huang, Guanghui Hu, Xiangcheng Zhan, Tiancheng Xie, Saiyang Li, Xiaolu Zhang, Huitao Li, Ren-Shan Ge, Yunfei Xu
Aldosterone (ALDO) is a primary endogenous mineralocorticoid, appearing as the main hormone controlling sodium and water homeostasis. Its emerging role in the development of many organs has gained interest over the past few years. In the testis, Leydig cells contain mineralocorticoid receptors and ALDO stimulates androgen synthesis via the mineralocorticoid receptors in rat adult Leydig cells. Although ALDO pharmacologically promoted the Leydig cell function, its role in Leydig cell development was unclear...
2018: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/29409357/macrolides-for-kcnj5-mutated-aldosterone-producing-adenoma-mapa-design-of-a-study-for-personalized-diagnosis-of-primary-aldosteronism
#12
Giuseppe Maiolino, Giulio Ceolotto, Michele Battistel, Giulio Barbiero, Maurizio Cesari, Laurence Amar, Brasilina Caroccia, Roberto Padrini, Michel Azizi, Gian Paolo Rossi
PURPOSE: Aldosterone-producing adenoma (APA) is the main curable cause of endocrine hypertension cause of primary aldosteronism (PA) and it is in up to 66% of all cases investigated with adrenal vein sampling (AVS). Mutations in the KCNJ5 potassium channel involve up to 70% of APA and cause the most florid PA phenotypes. The recent finding that macrolide antibiotics specifically inhibit in vitro the altered function of mutated KCNJ5 channels has opened new horizons for the diagnosis and treatment of APA with KCNJ5 mutations in that it can allow identification and target treatment of PA patients harbouring a mutated APA...
February 6, 2018: Blood Pressure
https://www.readbyqxmd.com/read/29403012/a-gain-of-function-mutation-in-the-clcn2-chloride-channel-gene-causes-primary-aldosteronism
#13
Fabio L Fernandes-Rosa, Georgios Daniil, Ian J Orozco, Corinna Göppner, Rami El Zein, Vandana Jain, Sheerazed Boulkroun, Xavier Jeunemaitre, Laurence Amar, Hervé Lefebvre, Thomas Schwarzmayr, Tim M Strom, Thomas J Jentsch, Maria-Christina Zennaro
Primary aldosteronism is the most common and curable form of secondary arterial hypertension. We performed whole-exome sequencing in patients with early-onset primary aldosteronism and identified a de novo heterozygous c.71G>A/p.Gly24Asp mutation in the CLCN2 gene, encoding the voltage-gated ClC-2 chloride channel 1 , in a patient diagnosed at 9 years of age. Patch-clamp analysis of glomerulosa cells of mouse adrenal gland slices showed hyperpolarization-activated Cl- currents that were abolished in Clcn2-/- mice...
February 5, 2018: Nature Genetics
https://www.readbyqxmd.com/read/29403011/clcn2-chloride-channel-mutations-in-familial-hyperaldosteronism-type-ii
#14
Ute I Scholl, Gabriel Stölting, Julia Schewe, Anne Thiel, Hua Tan, Carol Nelson-Williams, Alfred A Vichot, Sheng Chih Jin, Erin Loring, Verena Untiet, Taekyeong Yoo, Jungmin Choi, Shengxin Xu, Aihua Wu, Marieluise Kirchner, Philipp Mertins, Lars C Rump, Ali Mirza Onder, Cory Gamble, Daniel McKenney, Robert W Lash, Deborah P Jones, Gary Chune, Priscila Gagliardi, Murim Choi, Richard Gordon, Michael Stowasser, Christoph Fahlke, Richard P Lifton
Primary aldosteronism, a common cause of severe hypertension 1 , features constitutive production of the adrenal steroid aldosterone. We analyzed a multiplex family with familial hyperaldosteronism type II (FH-II) 2 and 80 additional probands with unsolved early-onset primary aldosteronism. Eight probands had novel heterozygous variants in CLCN2, including two de novo mutations and four independent occurrences of a mutation encoding an identical p.Arg172Gln substitution; all relatives with early-onset primary aldosteronism carried the CLCN2 variant found in the proband...
February 5, 2018: Nature Genetics
https://www.readbyqxmd.com/read/29390277/a-rare-case-report-of-bilateral-common-and-internal-iliac-arterial-fibromuscular-dysplasia-coexisted-dissection-aneurysm-and-stenosis
#15
Luyun Fan, Wenjun Ma, Huimin Zhang, Jun Cai
RATIONALE: Iliac arterial fibromuscular dysplasia (FMD) was rarely reported and its demographic, clinical, and imaging features have not been precisely described resulting in uncertain therapeutic methods. PATIENT CONCERNS: A 31-year-old man was referred because of 3-month-ago onset hypertension, low serum potassium, and a small-sized right kidney with normal renal artery under ultrasound examination. This patient was suspected of primary aldosteronism, whereas spirolactone was poorly effective...
December 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29388434/annals-express-improved-technical-success-and-radiation-safety-of-adrenal-vein-sampling-using-rapid-semi-quantitative-point-of-care-cortisol-measurement
#16
Michael M Page, Mario Taranto, Duncan Ramsay, Greg van Schie, Paul Glendenning, Melissa Gillett, Samuel Vasikaran
OBJECTIVE: Primary aldosteronism is a curable cause of hypertension which can be treated surgically or medically depending on the findings of adrenal vein sampling (AVS) studies. AVS studies are technically demanding with a high failure rate in many centres. The use of intra-procedural cortisol measurement could improve the success rates of AVS but may be impracticable due to cost and effects on procedural duration. DESIGN: Retrospective review of the results of AVS procedures since commencement of point of care cortisol measurement using a novel single-use semi-quantitative measuring device for cortisol, the AVS Accuracy Kit (AAK)...
January 1, 2018: Annals of Clinical Biochemistry
https://www.readbyqxmd.com/read/29384988/subclinical-target-organ-damage-in-primary-aldosteronism-resistant-to-spironolactone-therapy
#17
Konstantinos Stavropoulos, Konstantinos P Imprialos, Michael Doumas, Vasilios G Athyros, Asterios Karagiannis
No abstract text is available yet for this article.
March 2018: Journal of Hypertension
https://www.readbyqxmd.com/read/29371329/development-of-new-preclinical-models-to-advance-adrenocortical-carcinoma-research
#18
Katja Kiseljak-Vassiliades, Yu Zhang, Stacey Bagby, Adwitiya Kar, Nikita Pozdeyev, Mei Xu, Katherine Gowan, Vibha Sharma, Christopher D Raeburn, Maria Albuja-Cruz, Kenneth L Jones, Lauren Fishbein, Rebecca Schweppe, Hilary L Somerset, Todd M Pitts, Stephen Leong, Margaret Wierman
Adrenocortical cancer (ACC) is an orphan malignancy that results in heterogeneous clinical phenotypes and molecular genotypes. There are no curative treatments for this deadly cancer with 35% survival at five years. Our understanding of the underlying pathobiology and our ability to test novel therapeutic targets has been limited due to the lack of preclinical models. Here, we report the establishment of two new ACC cell lines and corresponding patient derived xenograft (PDX) models. CU-ACC1 cell line and PDX were derived from a perinephric metastasis in a patient whose primary tumor secreted aldosterone...
January 25, 2018: Endocrine-related Cancer
https://www.readbyqxmd.com/read/29370219/armc5-mutations-in-familial-and-sporadic-primary-bilateral-macronodular-adrenal-hyperplasia
#19
Liping Yu, Junqing Zhang, Xiaohui Guo, Xiaoyu Chen, Zhisong He, Qun He
To investigate Armadillo repeat-containing 5 (ARMC5) mutations in Chinese patients with familial and sporadic primary bilateral macronodular adrenal hyperplasia (PBMAH), we performed clinical data collection and ARMC5 sequencing for three PBMAH families and 23 sporadic PBMAH patients. ARMC5 pathogenic germline mutations were identified in all 3 PBMAH families. Secondary ARMC5 somatic mutations were found in two adrenal nodules from two PBMAH family members with ARMC5 germline mutations. PBMAH family members with ARMC5 pathogenic germline mutations displayed various clinical manifestations...
2018: PloS One
https://www.readbyqxmd.com/read/29369537/evaluation-of-an-individualized-dose-titration-regimen-of-patiromer-to-prevent-hyperkalaemia-in-patients-with-heart-failure-and-chronic-kidney-disease
#20
Bertram Pitt, David A Bushinsky, Dalane W Kitzman, Frank Ruschitzka, Marco Metra, Gerasimos Filippatos, Patrick Rossignol, Charles Du Mond, Dahlia Garza, Lance Berman, Mitja Lainscak
AIMS: Hyperkalaemia risk precludes optimal renin-angiotensin-aldosterone system inhibitor use in patients with heart failure (HF), particularly those with chronic kidney disease (CKD). Patiromer is a sodium-free, non-absorbed potassium (K+ )-binding polymer approved for the treatment of hyperkalaemia. In PEARL-HF, patiromer 25.2 g (fixed dose) prevented hyperkalaemia in HF patients with or without CKD initiating spironolactone. The current study evaluated the effectiveness of a lower starting dose of patiromer (16...
January 25, 2018: ESC Heart Failure
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