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primary aldosteronism

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https://www.readbyqxmd.com/read/28922675/clinical-characteristics-and-long-term-outcome-of-primary-aldosteronism-in-a-norwegian-population
#1
Marianne Aardal Grytaas, Siri S Strømsøy, Jarle Tor Rørvik, Jarle Birger Arnes, Anette Heie, Thomas Arnesen, Melissa D Jørstad, Bjørn Gunnar Nedrebø, Dag Erik Jøssang, Dag Kjartan Jensen, Håvard D Rørvik, Jørn Vegard Sagen, Gunnar Mellgren, Hrafnkell B Thordarson, Eystein Sverre Husebye, Kristian Løvås
No abstract text is available yet for this article.
September 18, 2017: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
https://www.readbyqxmd.com/read/28919378/sudden-death-mechanisms-in-non-ischemic-cardiomyopathies-insights-gleaned-from-clinical-implantable-cardioverter-defibrillator-trials
#2
Benjamin A Steinberg, Siva K Mulpuru, James C Fang, Bernard J Gersh
Sudden cardiac death (SCD) represents a major cause of death among patients with heart failure. While scar-based, macro-reentrant ventricular tachycardia and ventricular fibrillation (VT/VF) is the primary etiology for SCD among patients with ischemic cardiomyopathy, a more diverse set of mechanisms and substrates are likely at play for the diverse group of patients characterized by non-ischemic, dilated cardiomyopathy (NICM). These causes may include scar-based re-entry, but also neurohormonal stimulation (sympathetic, parasympathetic, renin-angiotensin-aldosterone), inflammation, and non-arrhythmic processes occurring in the context of a genetic predisposition...
September 14, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28918446/favorable-surgical-outcomes-of-aldosterone-producing-adenoma-based-on-lateralization-by-ct-imaging-and-hypokalemia-a-non-avs-based-strategy
#3
Hai Li, Jianbin Liu, Xiujuan Feng, Liehua Liu, Guohong Wei, Xiaopei Cao, Yanbing Li
PURPOSE: To test the efficacy of a strategy based on CT imaging and clinical characteristics on lateralizing origin of excess aldosterone secretion in primary aldosteronism. PATIENTS AND METHODS: Consecutive patients with diagnosed primary hyperaldosteronism from June 2006 to July 2012 in our center underwent adrenal surgeries without pre-operational adrenal venous sampling (AVS) if all the three criteria were met: (1) round- or oval-shaped occupational lesion of low density after contrast enhancement with diameter >1 cm on CT scan was located in one adrenal gland; (2) unequivocally normal contralateral adrenal gland; (3) serum potassium level lower than 3...
September 16, 2017: International Urology and Nephrology
https://www.readbyqxmd.com/read/28918310/effect-of-eplerenone-on-markers-of-bone-turnover-in-patients-with-primary-hyperparathyroidism-the-randomized-placebo-controlled-epath-trial
#4
Nicolas Verheyen, Martin R Grübler, Andreas Meinitzer, Christian Trummer, Verena Schwetz, Karin Amrein, Hans P Dimai, Winfried März, Cristiana Catena, Dirk von Lewinski, Jakob Voelkl, Ioana Alesutan, Astrid Fahrleitner-Pammer, Helmut Brussee, Stefan Pilz, Andreas Tomaschitz
Mineralocorticoid receptor (MR) antagonism may affect bone turnover via direct and indirect pathways involving parathyroid hormone, but randomized controlled trials are lacking. In a pre-specified analysis of the "Eplerenone in primary hyperparathyroidism" placebo-controlled, randomized trial (ISRCTN 33941607), effects of eight weeks MR-blockade with eplerenone on bone turnover markers in 97 patients with primary hyperparathyroidism were tested. Mean age was 67.5±9.5years, and 76 (78.4%) were females. In analysis of covariance with adjustment for baseline values, eplerenone had no significant effect on isoform 5b of the tartrate-resistant acid phosphatase (TRAP), beta-crosslaps, N-terminal propeptide of procollagen type 1 (P1NP), osteocalcin and bone-specific alkaline phosphatase...
September 13, 2017: Bone
https://www.readbyqxmd.com/read/28904009/diagnosis-of-endocrine-disease-18-oxocortisol-and-18-hydroxycortisol-is-there-clinical-utility-of-these-steroids
#5
Jacques Lenders, Tracy A Williams, Martin Reincke, Celso E Gomez-Sanchez
Since the early nineteen eighties 18-hydroxycortisol and 18-oxocortisol have attracted attention when it was shown that the urinary excretion of these hybrid steroids was increased in primary aldosteronism. The development and more widespread use of specific assays has improved the understanding of their role in the (patho)physiology of adrenal disorders. The adrenal site of synthesis is not fully understood although it is clear that for the synthesis of 18-hydroxycortisol and 18-oxocortisol the action of both aldosterone synthase (zona glomerulosa) and 17α-hydroxylase (zona fasciculata) is required with cortisol as main substrate...
September 13, 2017: European Journal of Endocrinology
https://www.readbyqxmd.com/read/28902663/aldosterone-induces-left-ventricular-subclinical-systolic-dysfunction-a-strain-imaging-study
#6
Zheng-Wei Chen, Kuan-Chih Huang, Jen-Kuang Lee, Lung-Chun Lin, Ching-Way Chen, Yi-Yao Chang, Che-Wei Liao, Vin-Cent Wu, Chi-Shen Hung, Yen-Hung Lin
BACKGROUND: Primary aldosteronism is associated with a higher incidence of left ventricular (LV) hypertrophy and diastolic dysfunction than essential hypertension. However, systolic function via endocardial measurements is similar between patients with primary aldosteronism and essential hypertension. Speckle-tracking echocardiography is a sensitive tool which can detect subclinical impairments in systolic function. The aim of this study was to investigate aldosterone-induced subclinical impairments in systolic function...
September 11, 2017: Journal of Hypertension
https://www.readbyqxmd.com/read/28894201/cortisol-overproduction-results-from-dna-methylation-of-cyp11b1-in-hypercortisolemia
#7
Mitsuhiro Kometani, Takashi Yoneda, Masashi Demura, Hiroshi Koide, Koshiro Nishimoto, Kuniaki Mukai, Celso E Gomez-Sanchez, Tadayuki Akagi, Takashi Yokota, Shin-Ichi Horike, Shigehiro Karashima, Isamu Miyamori, Masakazu Yamagishi, Yoshiyu Takeda
Adrenocortical hormone excess, due to primary aldosteronism (PA) or hypercortisolemia, causes hypertension and cardiovascular complications. In PA, hypomethylation of aldosterone synthase (CYP11B2) is associated with aldosterone overproduction. However, in hypercortisolemia, the role of DNA methylation of 11β-hydroxylase (CYP11B1), which catalyzes cortisol biosynthesis and is highly homologous to CYP11B2, is unclear. The aims of our study were to determine whether the CYP11B1 expression was regulated through DNA methylation in hypercortisolemia with cortisol-producing adenoma (CPA), and to investigate a possible relationship between DNA methylation and somatic mutations identified in CPA...
September 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28893861/adrenal-venous-sampling-for-primary-aldosteronism-laboratory-medicine-best-practice
#8
Gregory Kline, Daniel T Holmes
Primary aldosteronism (PA) is the most common form of secondary hypertension and is critical to identify because when caused by an aldosterone-producing adenoma (APA) or another unilateral form, it is potentially curable, and even when caused by bilateral disease, antihypertensives more specific to PA treatment can be employed (ie, aldosterone antagonists). Identification of unilateral forms is not generally accomplished with imaging because APAs may be small and elude detection, and coincidental identification of a non-functioning incidentaloma contralateral to an APA may lead to removal of an incorrect gland...
September 11, 2017: Journal of Clinical Pathology
https://www.readbyqxmd.com/read/28889455/management-of-primary-aldosteronism-in-patients-with-adrenal-hemorrhage-following-adrenal-vein-sampling-a-brief-review-with-illustrative-cases
#9
REVIEW
Fady Hannah-Shmouni, Andrew Demidowich, Beatriz Rizkallah Alves, Gabriela Dockhorn Paluch, Dionysiou Margarita, Charalampos Lysikatos, Elena Belyavskaya, Richard Chang, Constantine A Stratakis
The authors describe the clinical investigation of two cases of primary aldosteronism with adrenal hemorrhage (AH) following adrenal vein sampling. A literature review was conducted regarding the medical management of primary aldosteronism in patients with AH following adrenal vein sampling. Guidelines on the management of primary aldosteronism with AH following adrenal vein sampling are lacking. The two patients were followed with serial imaging to document resolution of AH and treated medically with excellent blood pressure response...
September 9, 2017: Journal of Clinical Hypertension
https://www.readbyqxmd.com/read/28878203/biventricular-cardiac-hypertrophy-in-a-patient-with-primary-aldosteronism-and-atrial-septal-defect
#10
Tjokorda Gde Dalem Pemayun, Ridho M Naibaho, Muhammad Achmad Sungkar
BACKGROUND Primary aldosteronism can be caused by adrenocortical adenoma and is usually associated with left ventricular hypertrophy. Biventricular cardiac hypertrophy and heart failure in the presence of a pre-existing atrial septal defect (ASD) are a rare association of primary aldosteronism. CASE REPORT A 33-year-old woman with resistant hypertension and refractory hypokalemia presented with signs and symptoms of heart failure. She had previously been diagnosed having a right adrenal tumor and ostium secundum type ASD...
September 7, 2017: American Journal of Case Reports
https://www.readbyqxmd.com/read/28877879/uninephrectomy-and-apical-fluid-shear-stress-decrease-enac-abundance-in-collecting-duct-principal-cells
#11
Thomas Ernandez, Khalil Udwan, Alexandra Chassot, Pierre-Yves Martin, Eric Feraille
Acute nephron reduction such as after living kidney donation may increase the risk of hypertension. Uninephrectomy induces major hemodynamic changes in the remaining kidney resulting in rapid increase of single nephron GFR and fluid delivery in the distal nephron. Decreased sodium (Na) fractional reabsorption after the distal tubule has been reported after uninephrectomy in animals preserving volume homeostasis. In the present study, we thought to specifically explore the effect of unilateral nephrectomy on ENaC subunits expression in mice...
September 6, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/28877721/a-case-of-adrenocoricotrophic-hormone-independent-bilateral-adrenocortical-macronodular-hyperplasia-concomitant-with-primary-aldosteronism
#12
Mao Tokumoto, Naoyoshi Onoda, Yukie Tauchi, Shinichiro Kashiwagi, Satoru Noda, Norikazu Toi, Masahumi Kurajoh, Masahiko Ohsawa, Yuto Yamazaki, Hironobu Sasano, Kosei Hirakawa, Masaichi Ohira
BACKGROUND: Adrenocoricotrophic hormone (ACTH) - independent bilateral adrenocortical macronodular hyperplasia (AIMAH) is a rare cause of Cushing's syndrome, and is characterized by bilateral adrenal hyperplasia. However, Primary aldosteronism (PA) is a relatively common adrenal disease. CASE PRESENTATION: A 56-year-old man who has been treated hypertension and diabetes mellitus was detected low plasma potassium level with an elevated level of plasma aldosterone concentration and bilateral adrenal swelling...
September 6, 2017: BMC Surgery
https://www.readbyqxmd.com/read/28872770/hormone-secreting-adrenal-tumours-cause-severe-hypertension-and-high-rates-of-poor-pregnancy-outcome-a-ukoss-study-with-case-control-comparisons
#13
G Quartermaine, K Lambert, K Rees, P T Seed, M K Dhanjal, M Knight, D R McCance, C Williamson
OBJECTIVE: To examine the management and outcomes of adrenal tumours in pregnancy. DESIGN: A national observational, cohort study over four years using the UK Obstetric Surveillance System (UKOSS). SETTING: Consultant led obstetric units. PATIENTS: Women with phaeochromocytoma, primary aldosteronism or Cushing's syndrome diagnosed before or during pregnancy. METHODS: Clinical features of UKOSS cases were compared to those of women with adrenal tumours reported from 1985-2015...
September 5, 2017: BJOG: An International Journal of Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/28872133/peptide-and-protein-quantification-using-automated-immuno-maldi-imaldi
#14
Huiyan Li, Robert Popp, Bjorn Frohlich, Michael X Chen, Christoph H Borchers
Mass spectrometry (MS) is one of the most commonly used technologies for quantifying proteins in complex samples, with excellent assay specificity as a result of the direct detection of the mass-to-charge ratio of each target molecule. However, MS-based proteomics, like most other analytical techniques, has a bias towards measuring high-abundance analytes, so it is challenging to achieve detection limits of low ng/mL or pg/mL in complex samples, and this is the concentration range for many disease-relevant proteins in biofluids such as human plasma...
August 18, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28870047/-expert-consensus-for-the-diagnosis-and-treatment-of-patients-with-gitelman-syndrome
#15
(no author information available yet)
Gitelman syndrome (GS) is an autosomal recessive, salt-losing tubulopathy caused by inactivating mutations in the SLC12A3 gene that encodes the thiazide-sensitive sodium-chloride cotransporter (NCC). GS is characterized by hypokalemic metabolic alkalosis, hypomagnesemia and hypocalciuria. GS is one of the most common inherited renal tubulopathy with a prevalence estimated at about one to ten per 40 000 people. The prevalence of GS is even higher in Asia than other countries. The majority of GS patients present mild and nonspecific symptoms during adolescence or adulthood...
September 1, 2017: Zhonghua Nei Ke za Zhi [Chinese Journal of Internal Medicine]
https://www.readbyqxmd.com/read/28866749/the-radiographically-diagnosed-adrenal-myelolipoma-what-do-we-really-know
#16
Michael J Campbell, Mary Obasi, Bingling Wu, Michael T Corwin, Ghaneh Fananapazir
PURPOSE: Adrenal myelolipomas are uncommon, benign tumors of the adrenal glands that are not routinely evaluated for autonomous hormone secretion or followed by repeat imaging, but may lead to retroperitoneal hemorrhage. Little is known about the natural history these tumors with the majority of previous publications being confined to case reports and small case series. METHODS: We reviewed the computed tomography (CT) reports of 62,279 patients evaluated at a tertiary referral center between 2002 and 2015 for the presence of an adrenal myelolipoma >1 cm in size...
September 2, 2017: Endocrine
https://www.readbyqxmd.com/read/28864840/renal-auricular-and-ocular-outcomes-of-alport-syndrome-and-their-current-management
#17
Yanqin Zhang, Jie Ding
Alport syndrome is a hereditary glomerular basement membrane disease caused by mutations in the COL4A3/4/5 genes encoding the type IV collagen alpha 3-5 chains. Most cases of Alport syndrome are inherited as X-linked dominant, and some as autosomal recessive or autosomal dominant. The primary manifestations are hematuria, proteinuria, and progressive renal failure, whereas some patients present with sensorineural hearing loss and ocular abnormalities. Renin-angiotensin-aldosterone system blockade is proven to delay the onset of renal failure by reducing proteinuria...
September 1, 2017: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/28862701/deletion-of-nedd4-2-results-in-progressive-kidney-disease-in-mice
#18
Tanya L Henshall, Jantina A Manning, Omri S Alfassy, Pranay Goel, Natasha A Boase, Hiroshi Kawabe, Sharad Kumar
NEDD4-2 (NEDD4L), a ubiquitin protein ligase of the Nedd4 family, is a key regulator of cell surface expression and activity of the amiloride-sensitive epithelial Na(+) channel (ENaC). While hypomorphic alleles of Nedd4-2 in mice show salt-sensitive hypertension, complete knockout results in pulmonary distress and perinatal lethality due to increased cell surface levels of ENaC. We now show that Nedd4-2 deficiency in mice also results in an unexpected progressive kidney injury phenotype associated with elevated ENaC and Na(+)Cl(-) cotransporter expression, increased Na(+) reabsorption, hypertension and markedly reduced levels of aldosterone...
September 1, 2017: Cell Death and Differentiation
https://www.readbyqxmd.com/read/28858978/microalbuminuria-and-plasma-aldosterone-levels-in-nondiabetic-treatment-na%C3%A3-ve-patients-with-hypertension
#19
Cristiana Catena, GianLuca Colussi, Flavia Martinis, Marileda Novello, Leonardo A Sechi
OBJECTIVES: Identification of factors that contribute to urinary albumin losses in hypertensive nephropathy is crucial for prevention of renal deterioration. The aim of this study was to investigate the relationship of low-grade albuminuria with plasma aldosterone levels in treatment-naïve hypertensive patients free of additional comorbidities that might affect renal function. METHODS: In 242 newly diagnosed patients with uncomplicated primary hypertension, we obtained duplicate 24-h urine collections for measurement of urinary albumin/creatinine ratio (UACR) and measured plasma aldosterone levels...
August 30, 2017: Journal of Hypertension
https://www.readbyqxmd.com/read/28852839/effect-of-eplerenone-on-extracellular-cardiac-matrix-biomarkers-in-patients-with-acute-st-elevation-myocardial-infarction-without-heart-failure-insights-from-the-randomized-double-blind-reminder-study
#20
João Pedro Ferreira, Kévin Duarte, Gilles Montalescot, Bertram Pitt, Esteban Lopez de Sa, Christian W Hamm, Marcus Flather, Freek Verheugt, Harry Shi, Eva Turgonyi, Miguel Orri, Patrick Rossignol, John Vincent, Faiez Zannad
OBJECTIVE: Aldosterone stimulates cardiac collagen synthesis. Circulating biomarkers of collagen turnover provide a useful tool for the assessment of cardiac remodeling in patients with an acute myocardial infarction (MI). METHODS: The REMINDER trial assessed the effect of eplerenone in patients with an acute ST-elevation Myocardial Infarction (STEMI) without known heart failure (HF), when initiated within 24 h of symptom onset. The primary outcome was almost totally (>90%) driven by natriuretic peptide (NP) thresholds after 1-month post-MI (it also included a composite of cardiovascular death or re-hospitalization or new onset HF or sustained ventricular tachycardia or fibrillation or LVEF ≤40% after 1-month post-MI)...
August 29, 2017: Clinical Research in Cardiology: Official Journal of the German Cardiac Society
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