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primary aldosteronism

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https://www.readbyqxmd.com/read/28103616/l-lysine-acts-as-a-serotonin-type-4-receptor-antagonist-to-counteract-in-vitro-and-in-vivo-the-stimulatory-effect-of-serotonergic-agents-on-aldosterone-secretion-in-man
#1
C Duparc, C André, J Ménard, B Godouet-Getti, J Wils, A F Cailleux, L Moreau-Grangé, E Louiset, H Lefebvre
In the normal human adrenal gland, serotonin (5-HT) stimulates aldosterone secretion through the 5-HT4 receptor (5-HT4R). However, the physiological role of the serotonergic control of adrenocortical function is not known. In the present study, we have investigated the ability of l-Lysine, which has been shown to act as a 5-HT4 receptor antagonist, to counteract in vitro and in vivo the stimulatory effect of 5-HT4R agonists on aldosterone production. l-Lysine was found to inhibit aldosterone production induced by 5-HT and the 5-HT4R agonists BIMU8 from cultured human adrenocortical cells...
January 19, 2017: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
https://www.readbyqxmd.com/read/28102204/the-prevalence-of-ctnnb1-mutations-in-primary-aldosteronism-and-consequences-for-clinical-outcomes
#2
Vin-Cent Wu, Shuo-Meng Wang, Shih-Chieh Jeff Chueh, Shao-Yu Yang, Kuo-How Huang, Yen-Hung Lin, Jian-Jhong Wang, Rory Connolly, Ya-Hui Hu, Celso E Gomez-Sanchez, Kang-Yung Peng, Kwan-Dun Wu
Constitutive activation of the Wnt pathway/β-catenin signaling may be important in aldosterone-producing adenoma (APA). However, significant gaps remain in our understanding of the prevalence and clinical outcomes after adrenalectomy in APA patients harboring CTNNB1 mutations. The molecular expression of CYP11B2 and gonadal receptors in adenomas were also explored. Adenomas from 219 APA patients (95 men; 44.2%; aged 50.5 ± 11.9 years) showed a high rate of somatic mutations (n = 128, 58.4%). The majority of them harbored KCNJ5 mutations (n = 116, 52...
January 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28102195/positive-association-between-kcnj5-rs2604204-a-c-polymorphism-and-plasma-aldosterone-levels-but-also-plasma-renin-and-angiotensin-i-and-ii-levels-in-newly-diagnosed-hypertensive-chinese-a-case-control-study
#3
H Wang, C Weng, H Chen
Variants in G protein-coupled inward rectifier K(+) channels 4 (GIRK4 also known as KCNJ5) gene are associated with primary aldosteronism, which is the most common cause of secondary hypertension. The KCNJ5 rs2604204 variant was shown to be common (minor allele frequency=32.5%) in Chinese patients with essential hypertension (EH). The relationship between KCNJ5 variant and plasma aldosterone (ALD) levels in EH patients has not been reported. We collected 229 patients with newly diagnosed EH without any antihypertensive agents...
January 19, 2017: Journal of Human Hypertension
https://www.readbyqxmd.com/read/28101185/hypokalemic-myopathy-in-primary-aldosteronism-a-case-report
#4
Chuifen Wu, Jun Xin, Minghua Xin, Hai Zou, Lie Jing, Caoyong Zhu, Wenhui Lei
Primary aldosteronism (PA) is a rare disorder. The majority of patients with PA present with typical features and are easily diagnosed. This disorder is usually diagnosed with hypokalemia, hypertension or an adrenal mass. However, patients with atypical symptoms may present a challenge for diagnosis and treatment. In the present study, a case of PA is described that presented with hypokalemic myopathy simulating polymyositis. The patient was a 44-year-old woman who presented with weakness and difficulty walking...
December 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28079049/lateralization-index-but-not-contralateral-suppression-at-adrenal-vein-sampling-predicts-improvement-in-blood-pressure-after-adrenalectomy-for-primary-aldosteronism
#5
M Tagawa, M Ghosn, H Wachtel, D Fraker, R R Townsend, S Trerotola, D L Cohen
Adrenal vein sampling (AVS) is essential in differentiating unilateral from bilateral sources of aldosterone excess in primary aldosteronism (PA). However, its ability to predict blood pressure (BP) improvement after adrenalectomy has not been well studied. This is a retrospective observational study of 119 patients who underwent AVS by sequential technique followed by adrenalectomy for PA at the Hospital of the University of Pennsylvania from 1997 to 2015. Median age was 52 years (interquartile range 44-59), 67% were male and median duration of hypertension was 10 (interquartile range 6-20) years...
January 12, 2017: Journal of Human Hypertension
https://www.readbyqxmd.com/read/28074381/adrenal-hormones-before-and-after-venography-during-adrenal-venous-sampling-a-self-controlled-study
#6
Yuya Koike, Seishi Matsui, Masao Omura, Kohzoh Makita, Alfonso W D Obara, Nobukazu Moriya, Tetsuo Nishikawa
OBJECTIVE: A stress reaction involving increased adrenal hormone release occurs when starting adrenal venous sampling (AVS). The purpose of the present study was to investigate the effect of single shot venography on adrenal hormone production during AVS. SUBJECTS AND METHODS: This was a prospective self-controlled study. We enrolled 54 consecutive patients (21 men, 33 women; mean age 52 ± 11 years) with primary aldosteronism who underwent AVS from May 2014 to February 2015...
January 10, 2017: Japanese Journal of Radiology
https://www.readbyqxmd.com/read/28073769/aldosterone-does-not-predict-cardiovascular-events-following-acute-coronary-syndrome-in-patients-initially-without-heart-failure
#7
Reynaria Pitts, Elise Gunzburger, Christie M Ballantyne, Philip J Barter, David Kallend, Lawrence A Leiter, Eran Leitersdorf, Stephen J Nicholls, Prediman K Shah, Jean-Claude Tardif, Anders G Olsson, John J V McMurray, John Kittelson, Gregory G Schwartz
BACKGROUND: Aldosterone may have adverse effects in the myocardium and vasculature. Treatment with an aldosterone antagonist reduces cardiovascular risk in patients with acute myocardial infarction complicated by heart failure (HF) and left ventricular systolic dysfunction. However, most patients with acute coronary syndrome do not have advanced HF. Among such patients, it is unknown whether aldosterone predicts cardiovascular risk. METHODS AND RESULTS: To address this question, we examined data from the dal-OUTCOMES trial that compared the cholesteryl ester transfer protein inhibitor dalcetrapib with placebo, beginning 4 to 12 weeks after an index acute coronary syndrome...
January 10, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28069910/primary-aldosteronism-not-just-about-potassium-and-blood-pressure
#8
T H Toh, C V Tong, H C Chong
No abstract text is available yet for this article.
January 9, 2017: QJM: Monthly Journal of the Association of Physicians
https://www.readbyqxmd.com/read/28069722/a-novel-approach-to-establishing-an-aldosterone-renin-ratio-cutoff-for-primary-aldosteronism
#9
Alexander A Leung, Dennis J Orton, Alex Chin, Hossein Sadrzadeh, Gregory A Kline
Direct renin concentration is replacing plasma renin activity in many laboratories for the investigation of primary aldosteronism, which may have a significant impact on the resulting aldosterone:renin ratios. We sought to develop a population-based approach to establishing an aldosterone:renin ratio cutoff when transitioning between assays. A population-based study was performed in Calgary, Alberta, Canada of 4301 individuals who received testing from January 2012 to November 2015. In 2014, direct renin concentration replaced plasma renin activity in routine testing...
January 9, 2017: Hypertension
https://www.readbyqxmd.com/read/28052878/high-frequency-of-variants-of-candidate-genes-in-black-africans-with-low-renin-resistant-hypertension
#10
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/28050008/hypokalemic-paralysis-complicated-by-concurrent-hyperthyroidism-and-hyperaldosternoism-a-case-report
#11
Yu-Hsin Hsiao, Yu-Wei Fang, Jyh-Gang Leu, Ming-Hsein Tsai
BACKGROUND Thyrotoxic periodic paralysis (TPP) is commonly observed in patients with acute paralysis and hyperthyroidism. However, there is a possibility of secondary causes of hypokalemia in such a setting. CASE REPORT Herein, we present the case of a 38-year-old woman with untreated hypertension and hyperthyroidism. She presented with muscle weakness, nausea, vomiting, and diarrhea since one week. The initial diagnosis was TPP. However, biochemistry tests showed hypokalemia with metabolic alkalosis and renal potassium wasting...
January 4, 2017: American Journal of Case Reports
https://www.readbyqxmd.com/read/28041953/synthetic-approaches-towards-the-multi-target-drug-spironolactone-and-its-potent-analogues-derivatives
#12
REVIEW
Fayaz Ali Larik, Aamer Saeed, Danish Shahzad, Muhammad Faisal, Hesham El-Seedi, Haroon Mehfooz, Pervaiz Ali Channar
Spironolactone is a well-known multi-target drug and is specifically used for the treatment of high blood pressure and heart failure. It is also used for the treatment of edema, cirrhosis of the liver, malignant, pediatric, nephrosis and primary hyperaldosteronism. Spironolactone in association with thiazide diuretics treats hypertension and in association with furosemide treats bronchopulmonary dyspepsia. The therapeutic mechanism of action of spironolactone involves binding to intracellular mineralocorticoids receptors (MRs) in kidney epithelial cells, thereby inhibiting the binding of aldosterone...
December 29, 2016: Steroids
https://www.readbyqxmd.com/read/28018978/clinical-practice-guideline-for-management-of-primary-aldosteronism-what-is-new-in-the-2016-update
#13
Damian G Romero, Licy L Yanes Cardozo
Primary Aldosteronism is the single most common cause of secondary hypertension and is associated with increased target organ injury. The Endocrine Society has recently released the updated Clinical Practice Guideline for Primary Aldosteronism entitled "The Management of Primary Aldosteronism: Case Detection, Diagnosis, and Treatment: An Endocrine Society Clinical Practice Guideline". We review the updated Clinical Practice Guideline, highlighting the new recommendations and the implications that they may have in clinical practice...
2016: Int J Endocrinol Metab Disord
https://www.readbyqxmd.com/read/28012323/sclerosing-angiomatoid-nodular-transformation-of-the-spleen-presenting-rapid-growth-after-adrenalectomy-report-of-a-case
#14
Yasuo Nagai, Daisuke Satoh, Hiroyoshi Matsukawa, Shigehiro Shiozaki
INTRODUCTION: Sclerosing angiomatoid nodular transformation (SANT) is a rare benign lesion with an unknown natural history and pathogenesis. So far fewer than 100 cases were documented, but detailed incidence and prevalence are unknown. PRESENTATION OF CASE: We report a case of SANT of the spleen in a 37-year-old man that showed rapid growth after adrenalectomy for primary aldosteronism. Computed tomography showed a nodule in the spleen that increased in size from 2...
November 30, 2016: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28004291/sacubitril-valsartan-lcz696-in-heart-failure
#15
Yasser Khder, Victor Shi, John J V McMurray, Martin P Lefkowitz
It has been known since the 1990s that long-term morbidity and mortality is improved in patients with heart failure with reduced ejection fraction (HFrEF) by treatments that target the renin-angiotensin-aldosterone system (RAAS). It has also long been thought that enhancement of the activity of natriuretic peptides (NPs) could potentially benefit patients with HFrEF, but multiple attempts to realize this benefit had failed over the years - until 2014, when a large, phase III, randomized, controlled clinical trial (PARADIGM-HF) was completed comparing sacubitril/valsartan with enalapril, a well-established treatment for HFrEF...
December 22, 2016: Handbook of Experimental Pharmacology
https://www.readbyqxmd.com/read/28001017/improvement-of-bone-turnover-markers-and-bone-mineral-density-following-treatment-of-primary-aldosteronism
#16
Huai H Loh, Nor A Kamaruddin, Rozman Zakaria, Norlela Sukor
BACKGROUND: Recent studies showed association between hyperaldosteronism and low bone density among patients with primary aldosteronism (PA) due to secondary hyperparathyroidism. Our objective is to assess bone turnover markers (BTM) and bone mineral density (BMD) of PA patients compared to essential hypertension. METHODS: This was an open-label, prospective, case-controlled study, conducted over 12 months. Fifty-two consecutive patients referred for secondary hypertension were screened...
December 20, 2016: Minerva Endocrinologica
https://www.readbyqxmd.com/read/27967304/histopathological-classification-of-cross-sectional-image-negative-hyperaldosteronism
#17
Yuto Yamazaki, Yasuhiro Nakamura, Kei Omata, Kazue Ise, Yuta Tezuka, Yoshikiyo Ono, Ryo Morimoto, Yukinaga Nozawa, Celso E Gomez-Sanchez, Scott A Tomlins, William E Rainey, Sadayoshi Ito, Fumitoshi Satoh, Hironobu Sasano
CONTEXT: Approximately half of primary aldosteronism (PA) have clinically evident disease according to clinical (hypertension) and/or laboratory (aldosterone and renin levels) findings but do not have nodules detectable in routine cross-sectional imaging. However, the detailed histopathologic, steroidogenic and pathobiological features of cross-sectional image negative PA have not been well characterized. OBJECTIVE: Examine histopathology, steroidogenic enzyme expression and somatic mutation status of aldosterone-driver genes in adrenals from cross-sectional image negative hyperaldosteronism...
December 14, 2016: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/27965370/genetic-characterization-of-a-mouse-line-with-primary-aldosteronism
#18
Luis Gustavo Perez-Rivas, Yara Rhayem, Sibylle Sabrautzki, Constanze Hantel, Birgit Rathkolb, Martin Hrabé de Angelis, Martin Reincke, Felix Beuschlein, Ariadni Spyroglou
In an attempt to define novel genetic loci involved in the pathophysiology of primary aldosteronism a mutagenesis screen following treatment with the alkylating agent N-ethyl-N-nitrosourea was established for the parameter aldosterone. One of the generated mouse lines with hyperaldosteronism was phenotypically and genetically characterized. This mouse line had high aldosterone levels but normal creatinine and urea values. The steroidogenic enzyme expression levels in the adrenal gland did not differ significantly among phenotypically affected and unaffected mice...
December 13, 2016: Journal of Molecular Endocrinology
https://www.readbyqxmd.com/read/27957422/unmasked-chronic-renal-function-deterioration-after-unilateral-adrenalectomy-in-patients-with-primary-aldosteronism
#19
Su Min Park, Woo Jin Jung, Jong Man Park, Harin Rhee, Il Young Kim, Eun Young Seong, Dong Won Lee, Soo Bong Lee, Ihm Soo Kwak, Nari Shin, Sang Heon Song
We report 2 cases of chronic estimated glomerular filtration rate (eGFR) decline after unilateral adrenalectomy due to primary aldosteronism. The patients were diagnosed with unilateral adrenal cortical adenoma releasing aldosterone. Two patients were examined for hypertension and hypokalemia. Unilateral laparoscopic adrenalectomy was performed in both cases, and pathology confirmed adrenal cortical adenoma. After adrenalectomy, hypertension and hypokalemia improved to within normal range. However, the eGFR decreased postoperatively, and abdominal computed tomography scan showed decreased kidney size compared to previous images...
December 2016: Kidney Research and Clinical Practice
https://www.readbyqxmd.com/read/27933375/a-novel-method-of-adrenal-venous-sampling-via-an-antecubital-approach
#20
Xiongjing Jiang, Hui Dong, Meng Peng, Wuqiang Che, Yubao Zou, Lei Song, Huimin Zhang, Haiying Wu
PURPOSE: Currently, almost all adrenal venous sampling (AVS) procedures are performed by femoral vein access. The purpose of this study was to establish the technique of AVS via an antecubital approach and evaluate its safety and feasibility. MATERIALS AND METHODS: From January 2012 to June 2015, 194 consecutive patients diagnosed as primary aldosteronism underwent AVS via an antecubital approach without ACTH simulation. Catheters used for bilateral adrenal cannulations were recorded...
December 8, 2016: Cardiovascular and Interventional Radiology
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