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Adrenal adenomas

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https://www.readbyqxmd.com/read/28720595/transcription-controls-growth-cell-kinetics-and-cholesterol-supply-to-sustain-acth-responses
#1
Robert I Menzies, Xin Zhao, Linda J Mullins, John J Mullins, Carolynn Cairns, Nicola Wrobel, Donald R Dunbar, Matthew A Bailey, Chris J Kenyon
Chronic ACTH exposure (eg Cushings) is associated with adrenal hypertrophy and steroidogenesis. The underlying molecular processes in mice have been analysed by microarray, histological and immunohistochemical techniques. Synacthen infused for 2weeks markedly increased adrenal mass and plasma corticosterone levels. Microarray analysis found greater than 2-fold changes in expression of 928 genes (P<0.001; 397 up, 531 down). These clustered in pathways involved in signalling, sterol/lipid metabolism, cell proliferation/hypertrophy and apoptosis...
July 18, 2017: Endocrine Connections
https://www.readbyqxmd.com/read/28708774/identifying-unilateral-disease-in-chinese-patients-with-primary-aldosteronism-by-using-a-modified-prediction-score
#2
Ying Zhang, Wenquan Niu, Fangfang Zheng, Hua Zhang, Wenlong Zhou, Zhoujun Shen, Jianzhong Xu, Xiaofeng Tang, Jin Zhang, Ping-Jin Gao, Ji-Guang Wang, Limin Zhu
OBJECTIVE: The current study aimed to evaluate the role of Küpers' score in predicting unilateral aldosteronism, and develop a modified score in Chinese patients with primary aldosteronism. METHODS: The current retrospective study included 406 patients with primary aldosteronism who underwent successful adrenal venous sampling (AVS) and were divided into the unilateral (n = 211) and bilateral (n = 195) groups according to the AVS results. Normokalemia was noted in both the unilateral (n = 64) and bilateral groups (n = 84) when plasma and urinary aldosterone were measured...
July 20, 2017: Journal of Hypertension
https://www.readbyqxmd.com/read/28704339/quantitative-analysis-of-normal-and-pathologic-adrenal-glands-with-18f-fdopa-pet-ct-focus-on-pheochromocytomas
#3
Aurélie Moreau, Anne L Giraudet, David Kryza, Françoise Borson-Chazot, Claire Bournaud, Thomas Mognetti, Jean-Christophe Lifante, Patrick Combemale, Francesco Giammarile, Claire Houzard
INTRODUCTION: Many studies have reported the high performance of 6-fluorine-18-fluorodihydroxyphenilalanine (F-FDOPA) PET/CT in the diagnosis of pheochromocytomas but nobody seems to have investigated physiological and pathological adrenal glands from a quantitative point of view. The purpose of the present study was to assess the quantitative F-FDOPA uptake of normal and pathologic adrenal glands and to establish thresholds to characterize pheochromocytomas. We were especially interested in characterizing the remaining adrenal glands captation after an adrenalectomy...
July 12, 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28699986/diagnosis-and-management-of-primary-aldosteronism
#4
Leticia A P Vilela, Madson Q Almeida
Primary aldosteronism (PA) is the most common form of secondary hypertension (HTN), with an estimated prevalence of 4% of hypertensive patients in primary care and around 10% of referred patients. Patients with PA have higher cardiovascular morbidity and mortality than age- and sex-matched patients with essential HTN and the same degree of blood pressure elevation. PA is characterized by an autonomous aldosterone production causing sodium retention, plasma renin supression, HTN, cardiovascular damage, and increased potassium excretion, leading to variable degrees of hypokalemia...
May 2017: Archives of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28695321/angiogenesis-and-lymphangiogenesis-in-the-adrenocortical-tumors
#5
Sofia S Pereira, Madalena M Costa, Susana G Guerreiro, Mariana P Monteiro, Duarte Pignatelli
Adrenocortical tumors (ACT) are common adrenal tumors. The majority of ACTs are non-functioning and benign, while adrenocortical carcinomas (ACC) are rare, usually very aggressive and often metastasized when first diagnosed. Our aim was to assess whether blood and lymph vessel density within ACTs correlate with the malignancy character or tumor functionality. For that, the microvascular distribution was evaluated by immunohistochemistry staining with D2-40 antibody, for lymph vessels and CD-31 antibody, for blood vessels, in ACCs (n = 15), adenomas with Cushing syndrome (n = 9) and non-functioning adenomas (n = 10)...
July 10, 2017: Pathology Oncology Research: POR
https://www.readbyqxmd.com/read/28690744/-macro-adrenal-adenoma-masking-micronodular-adrenal-hyperplasia-in-patients-with-acth-independent-cushing-s-syndrome-and-refractory-hypokalaemia
#6
Wafa Alaya, Haifa Bouchahda, Asma Fradi, Baha Zantour, Mohamed Habib Sfar
No abstract text is available yet for this article.
2017: Pan African Medical Journal
https://www.readbyqxmd.com/read/28688648/nationwide-review-of-hormonally-active-adrenal-tumors-highlights-high-morbidity-in-pheochromocytoma
#7
Punam P Parikh, Gustavo A Rubio, Josefina C Farra, John I Lew
BACKGROUND: Adrenal adenomas are benign tumors often discovered incidentally, and >70% are hormonally inactive. The remaining subset may produce excess aldosterone, cortisol, or catecholamine. Perioperative outcomes after adrenalectomy for such "hormonally active" tumors remain unclear. This study examines in-hospital outcomes after unilateral adrenalectomy for hormonally active tumors. METHODS: A retrospective review was performed using the Nationwide Inpatient Sample (2006-2011) to identify patients undergoing unilateral adrenalectomy for hormonally active or inactive tumors...
July 2017: Journal of Surgical Research
https://www.readbyqxmd.com/read/28687023/adrenalectomy-for-incidentaloma-lessons-learned-from-a-single-centre-series-of-274-patients
#8
Sébastien Gaujoux, Adeline Aimé, Guillaume Assié, Roberto Ciuni, Stéphane Bonnet, Florence Tenenbaum, Jérome Bertherat, Bertrand Dousset
BACKGROUND: Adrenal incidentalomas are increasingly diagnosed and include a wide spectrum of lesions from benign adenomas to secreting or malignant lesions. The aim of the present study is to report a large single-institution experience of patients undergoing surgery for adrenal incidentaloma with particular attention to their diagnosis and post-operative course and the evolution of surgical practice over time. METHODS: From 1993 to 2013, 274 patients underwent adrenalectomy for incidentaloma...
July 7, 2017: ANZ Journal of Surgery
https://www.readbyqxmd.com/read/28672763/a-step-by-step-approach-in-differential-diagnosing-of-adrenal-incidentaloma-epinephroma-with-comments-on-the-new-clinical-practice-guidelines-of-the-european-society-of-endocrinology
#9
Frederick-Anthony Farrugia, Evangelos Misiakos, Georgios Martikos, Panagiotis Tzanetis, Anestis Charalampopoulos, Nicolaos Zavras, Dimitrios Sotiropoulos, Nikolaos Koliakos
OBJECTIVES: To present a step by step approach for the diagnosis of adrenal incidentaloma (AI). METHOD: An extensive review of the literature was conducted, searching the Pub-Med and Google Scholar using the Mesh terms; Adrenal; Incidentaloma; Adrenal tumours; Radiology; Diagnosis. We also did a cross-referencing search of the literature. Comments on the new European guidelines are presented. RESULTS: The majority of the tumours are non-functioning benign adenomas...
June 23, 2017: Romanian Journal of Internal Medicine, Revue Roumaine de Médecine Interne
https://www.readbyqxmd.com/read/28667008/a-case-of-acute-confusion-cushing-s-syndrome-presenting-with-primary-hyperparathyroidism
#10
Esmee Irvine, Yew Wen Yap, Tej Purewal, Esmee Irvine
Cushing's syndrome is a rare disease. Cushing's syndrome presenting as acute psychosis is an exceptional occurrence. We present the case of a 37-year-old woman who was admitted with acute confusion associated with mild hypercalcaemia and was subsequently diagnosed with parathyroid and adrenal adenomas. Our hospital sees approximately 6000 endocrine patients per year, with an incidence of around four Cushing's cases annually. This is the first such case to occur in our hospital and one of few described in the literature...
June 30, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28665508/a-polymorphism-in-the-cyp17a1-gene-influences-the-therapeutic-response-to-steroidogenesis-inhibitors-in-cushing-s-syndrome
#11
Elena Valassi, Anna Aulinas, Camilla Am Glad, Gudmundur Johannsson, Oskar Ragnarsson, Susan M Webb
CONTEXT: Steroidogenesis inhibitors, such as ketoconazole (KTZ) and metyrapone (MTP) are used to lower hypercortisolism in patients with Cushing's syndrome (CS). Cortisol normalization is not reached in all patients taking these medications. OBJECTIVE: To test the hypothesis that variants in genes affecting steroidogenesis contribute to different responses to KTZ and/or MTP in patients with CS. PATIENTS AND METHODS: Fifty-four CS patients [46 women; mean (±SD) age, 39...
June 30, 2017: Clinical Endocrinology
https://www.readbyqxmd.com/read/28658440/new-evidences-on-the-regulation-of-sf-1-expression-by-pod1-tcf21-in-adrenocortical-tumor-cells
#12
Monica Malheiros França, Antonio M Lerario, Maria Candida B V Fragoso, Claudimara Ferini Pacicco Lotfi
OBJECTIVES: Transcription Factor 21 represses steroidogenic factor 1, a nuclear receptor required for gonadal development, sex determination and the regulation of adrenogonadal steroidogenesis. The aim of this study was to investigate whether silencing or overexpression of the gene Transcription Factor 21 could modulate the gene and protein expression of steroidogenic factor 1 in adrenocortical tumors. METHODS: We analyzed the gene expression of steroidogenic factor 1 using qPCR after silencing endogenous Transcription Factor 21 in pediatric adrenal adenoma-T7 cells through small interfering RNA...
June 2017: Clinics
https://www.readbyqxmd.com/read/28656620/autonomous-cortisol-secretion-in-adrenal-incidentalomas-and-increased-visceral-fat-accumulation-during-follow-up
#13
Serkan Yener, Mustafa Baris, Ahmet Peker, Omer Demir, Basak Ozgen, Mustafa Secil
OBJECTIVE: Autonomous cortisol secretion of adrenal incidentalomas (AIs) is associated with poor cardiovascular outcome. Because centripetal obesity is a cardiovascular risk factor, we aimed to investigate whether autonomous cortisol secretion is associated with increased visceral fat accumulation. DESIGN: Retrospective cohort study. PATIENTS: Patients with AIs who attended for follow-up between January 2014 and December 2016 were evaluated...
June 28, 2017: Clinical Endocrinology
https://www.readbyqxmd.com/read/28644176/conn-syndrome-presenting-as-central-retinal-vein-occlusion
#14
Alp Atik, Dennis Wilson, Rohan W Essex
PURPOSE: To describe a case of central retinal vein occlusion in a young patient presenting with symptomatic malignant hypertension because of Conn syndrome. METHODS: Single interventional case report. RESULTS: A 44-year-old man presented with a 1-day history of headache and vision loss in his right eye on a background of malignant hypertension. He was diagnosed with right central retinal vein occlusion. Further investigation of his malignant hypertension revealed Conn syndrome because of an aldosterone-secreting adenoma in the left adrenal gland...
June 20, 2017: Retinal Cases & Brief Reports
https://www.readbyqxmd.com/read/28641336/suppression-of-forkhead-box-protein-o1-foxo1-transcription-factor-may-promote-adrenocortical-tumorigenesis
#15
Adam Stenman, Timothy Murtha, Reju Korah, Tobias Carling
Despite recent comprehensive genetic analyses, molecular evidence for a pathophysiological continuum linking benign adrenocortical adenoma (ACA) and highly aggressive adrenocortical carcinoma (ACC) is still elusive. Using human tumor samples and the established ACC cell line SW-13, this study investigated potential regulatory roles for FOXO transcription factors, in modulating adrenocortical tumorigenesis. Adrenocortical tumor specimens (20 ACAs, 10 ACCs, and 9 normal adrenal tissue samples) obtained from 30 patients were analyzed for ubiquitously expressed FOXO transcription factors, FOXO1 and FOXO3 using qRT-PCR and immunohistochemistry...
June 22, 2017: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
https://www.readbyqxmd.com/read/28639924/cushing-syndrome-diagnostic-workup-and-imaging-features-with-clinical-and-pathologic-correlation
#16
Nicolaus A Wagner-Bartak, Ali Baiomy, Mouhammed Amir Habra, Shalini V Mukhi, Ajaykumar C Morani, Brinda R Korivi, Steven G Waguespack, Khaled M Elsayes
OBJECTIVE: Cushing syndrome (CS) is a constellation of clinical signs and symptoms resulting from chronic exposure to excess cortisol, either exogenous or endogenous. Exogenous CS is most commonly caused by administration of glucocorticoids. Endogenous CS is subdivided into two types: adrenocorticotropic hormone (ACTH) dependent and ACTH independent. CONCLUSION: Cushing disease, which is caused by a pituitary adenoma, is the most common cause of ACTH-dependent CS for which pituitary MRI can be diagnostic, with bilateral inferior petrosal sinus sampling useful in equivocal cases...
July 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28604945/adrenal-tumour-bigger-than-5-cm-what-could-it-be-an-analysis-of-139-cases
#17
Andrzej Cichocki, Radoslaw Samsel, Lucyna Papierska, Katarzyna Roszkowska-Purska, Karolina Nowak, Zbigniew Jodkiewicz, Anna Kasperlik-Załuska
INTRODUCTION: There is an increasing number of adrenal being tumours discovered incidentally during imaging examinations performed for many different indications. Radiological findings suggesting adrenal pathology may be caused by true adrenal tumours or by other retroperitoneal masses. Generally, the larger the tumour, the higher the possibility of adrenal cancer. MATERIAL AND METHODS: Analysis of our data - 139 operations performed over 11 years (2004-2014) in patients with tumours in the adrenal area larger than 5 cm...
June 12, 2017: Endokrynologia Polska
https://www.readbyqxmd.com/read/28604387/macrolides-selectively-inhibit-mutant-kcnj5-potassium-channels-that-cause-aldosterone-producing-adenoma
#18
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 30, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28596421/higher-glucocorticoid-replacement-doses-are-associated-with-increased-mortality-in-patients-with-pituitary-adenoma
#19
Casper Hammarstrand, Oskar Ragnarsson, Tobias Hallén, Eva Andersson, Thomas Skoglund, Anna G Nilsson, Gudmundur Johannsson, Daniel S Olsson
OBJECTIVE: Patients with secondary adrenal insufficiency (AI) have an excess mortality. The objective was to investigate the impact of the daily glucocorticoid replacement dose on mortality in patients with hypopituitarism due to non-functioning pituitary adenoma (NFPA). METHODS: Patients with NFPA were followed between years 1997 and 2014 and cross-referenced with the National Swedish Death Register. Standardized mortality ratio (SMR) was calculated with the general population as reference and Cox-regression was used to analyse the mortality...
September 2017: European Journal of Endocrinology
https://www.readbyqxmd.com/read/28585681/glucose-metabolism-disorders-in-patients-with-non-functioning-adrenal-adenomas-single-centre-experience
#20
Katarzyna Krzyżewska, Ewa Niemczuk, Bartosz Jakub Myśliwiec, Roman Junik
INTRODUCTION: The presence of glucose metabolism disorders and their possible correlation with degree of cortisol secretion were evaluated in patients with non-functioning adrenal incidentalomas (NFAIs). MATERIAL AND METHODS: The study group consisted of 131 patients with hormonally inactive adrenal incidentalomas. In each patient, besides hormonal and radiological evaluation, was assessed for fasting glucose and insulin concentrations, and the oral glucose tolerance test (OGTT) was performed in all participants without previous history of glucose disturbances...
June 6, 2017: Endokrynologia Polska
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