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Pheochomocytoma

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https://www.readbyqxmd.com/read/25369903/-wasp-sting-induced-pheochromozytoma-crisis-with-stress-related-cardiomyopathy-takotsubo
#1
S Hausen, A Treusch, C Hermes, P Boekstegers
This article presents the case of a patient with sudden onset of heart failure caused by transient severe left ventricular dysfunction with the typical pattern of stress-induced cardiomyopathy (takotsubo cardiomyopathy) who had wasp sting a few hours before admission in the presence of a previously asymptomatic pheochromocytoma. There seems to be correlation between the wasp-venom-induced pheochomocytoma crisis and acute onset of heart failure. Once pheocromocytoma is diagnosed, medical therapy is preferable before surgical treatment...
November 2014: Medizinische Klinik, Intensivmedizin und Notfallmedizin
https://www.readbyqxmd.com/read/21968432/-%C3%A2-%C3%A2-%C3%A2-i-metaiodobenzylguanidine-therapy-in-neural-crest-tumors-varying-outcome-in-different-histopathologies
#2
Swati Hiren Rachh, Suman Abhyankar, Sandip Basu
AIM: To evaluate the response of [¹³¹I] metaiodobenzylguanidine ([¹³¹I]MIBG) therapy in patients with neuroectodermal tumors and to assess their quality of life using the functional assessment of cancer therapy - general quality-of-life questionnaire for patients who are on follow-up after MIBG therapy. MATERIALS AND METHODS: Thirty-two patients diagnosed with various subtypes of neuroectodermal tumors and treated with [¹³¹I]MIBG were included in this retrospective analysis...
December 2011: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/20967963/-pheocromocytoma-with-negative-mibg
#3
Angela Bento, João Vasconcelos, António Jara
Pheochomocytomas are catecholamine-releasing tumors derived from chromaffin cells. These kind of tumors occur in less than 1% of the patients evaluated for hypertension. The authors present a case of pheochomocytoma difficult to localize because MIBG scintigraphy was negative and elaborate a review about that subject.
June 2010: Portuguese Journal of Cardiology: An Official Journal of the Portuguese Society of Cardiology
https://www.readbyqxmd.com/read/19588875/-ejaculatory-disorder-caused-by-doxazosin-administration-for-blood-pressure-control-in-patient-with-pheochomocytoma
#4
Toshiyasu Amano, Tetsuya Imao, Katsuro Takemae, Keishi Yamauchi
A 29-year-old man had been treated for hypertension for 10 years. He suffered from speech disturbance caused by cerebral infarction, and further examinations were performed. Computerized tomography scan and magnetic resonance imaging revealed a left adrenal tumor 6 cm in size. The radioisotope (MIBG) accumulated in the left adrenal gland. The serum noradrenalin levels were high. Thus, the diagnosis of pheochomocytoma in left adrenal tumor was made. He noticed ejaculation disturbance 5 days after starting administration of doxazosin at the dose of 3 mg/day for pre-operative blood pressure control...
June 2009: Hinyokika Kiyo. Acta Urologica Japonica
https://www.readbyqxmd.com/read/17949973/outcomes-of-laparoscopic-adrenalectomy-clinical-experience-with-68-patients
#5
COMPARATIVE STUDY
Raffaele Pugliese, Marco Boniardi, Fabio Sansonna, Dario Maggioni, Stefano De Carli, Andrea Costanzi, Ildo Scandroglio, Giovanni Carlo Ferrari, Stefano Di Lernia, Carmelo Magistro, Paola Loli, Erika Grossrubatscher
The aim of this study was to analyze feasibility and outcomes of laparoscopic adrenalectomy (LA). Pathology, size and bilateral site of lesions were considered. Between December 1998 and May 2007 in our institution a total of 68 patients of mean age of 53 years underwent unilateral (n=57) or bilateral (n=11) LA. Adrenal masses averaged 5.4cm in size (range 1.2-13cm) and 56.7g in weight (range 10-265) including 71 benign and 8 malignant lesions. A total of 79 adrenal glands were resected, 44 right sided and 35 left sided...
July 2008: Surgical Oncology
https://www.readbyqxmd.com/read/16035388/-neurofibromatosis-the-most-frequent-hereditary-tumor-predisposition-syndrome
#6
Katharina Wimmer
With an incidence of one in 3000 to 4000 individuals, neurofibromatosis type 1 (NF1) is one of the most common autosomal dominant genetic diseases and very likely the most frequent disorder with increased cancer risk. Approximately fifty percent of all patients are familial cases and the remaining half consists of sporadic cases with no affected parent. The hallmark clinical features present in over 90% of all patients are café-au-lait spots and neurofibromas. However, the disorder should not be underestimated as a "mere cosmetic problem", since NF1 patients are at increased risk to also develop malignant tumours, such as malignant peripheral nerve sheath tumours (MPNST), juvenile myelomonocytic leukaemia (JMML), optic glioma and pheochomocytoma...
June 2005: Wiener Medizinische Wochenschrift
https://www.readbyqxmd.com/read/15210578/methylene-atp-analogs-as-modulators-of-extracellular-atp-metabolism-and-accumulation
#7
COMPARATIVE STUDY
Sheldon M Joseph, Matthew A Pifer, Ronald J Przybylski, George R Dubyak
1 Transient accumulation of extracellular ATP reflects both release of ATP from intracellular stores and altered rates of ATP metabolism by ecto-enzymes. Ecto-nucleoside triphosphate diphosphohydrolases (eNTPDases) and ecto-nucleotide pyrophosphatases (eNPPs) degrade ATP, while ecto-nucleotide diphosphokinases (eNDPKs) synthesize ATP from ambient ADP. 2 Although the methylene ATP analogs betagamma-meATP and alphabeta-meATP are widely used as metabolically stable tools for the analysis of purinergic signaling, their specific effects on eNTPDase, eNPP, and eNDPK activities have not been defined...
July 2004: British Journal of Pharmacology
https://www.readbyqxmd.com/read/12945223/-clinical-significant-of-serum-chromogranin-a-levels-for-diagnosing-pheochromocytoma-in-hypertensive-patients
#8
F Biausque, O Jaboureck, P Devos, M D'Herbomez, Ph Hainaut, A Carré, Cl Mounier-Vehier
OBJECTIVE: CMA is a widespread glycoprotein located in the secretory vesicles of neuroendocrine cells and is co-released with peptides and biogenic amines into the circulation. The present study set out to investigate the clinical utility of assessing serum CGA levels in comparison with the urinary KTCO and their urinary metabolites concentrations, which are to date the gold standard validated diagnostic test. METHODS: From January 2000 to June 2001, 202 consecutive patients, aged 53 +/- 12...
July 2003: Archives des Maladies du Coeur et des Vaisseaux
https://www.readbyqxmd.com/read/12101796/atrial-fibrillation-the-arrhythmia-of-the-elderly-causes-and-associated-conditions
#9
REVIEW
Samuel Levy
Atrial fibrillation (AF) is a common clinical problem, particularly in the elderly, and in patients with organic heart disease. A small percentage of patients, have a potentially reversible cause. Atrial fibrillation is in most patients (approximately 70%) associated with chronic organic heart disease including valvular heart disease, coronary artery disease, hypertension, particularly if left ventricular hypertrophy is present, hypertrophic cardiomyopathy, dilated cardiomyopathy and congenital heart disease and most commonly in adults, atrial septal defect...
March 2002: Anadolu Kardiyoloji Dergisi: AKD, the Anatolian Journal of Cardiology
https://www.readbyqxmd.com/read/11367754/-effect-of-glucocorticoid-on-ca2-i-induced-by-high-k-in-single-pc12-cells-and-its-characteristics
#10
S J Lou, C G Wang, X Y Huang, Y Z Chen
The effect of glucocorticoid on the increase of cytosolic free calcium [Ca2+]i) induced by high-K+ was investigated in pheochomocytoma PC12 cells. The main result was as follows: (1) When the cells were preincubated at 37 degrees C for various time intervals in the presence of 10(-5) mol/L of corticosterone and stimulated with 55 mmol/L KCl, an inhibitory effect of corticosterone on delta [Ca2+]i was observed in a time-dependent manner with maximal effect at 5th min and no effect at 25th min. (2) When PC12 cells were preincubated with various concentration of corticosterone at 37 degrees C for 5 min, the inhibitory effect of corticosterone on delta [Ca2+]i induced by 55 mmol/L KCl was concentration-dependent...
October 1998: Sheng Li Xue Bao: [Acta Physiologica Sinica]
https://www.readbyqxmd.com/read/9358513/factors-predisposing-to-the-development-of-atrial-fibrillation
#11
REVIEW
S Lévy
Atrial fibrillation (AF) is in most patients (approximately 70%) associated with organic heart disease including valvular heart disease, coronary artery disease, hypertension, hypertrophic cardiomyopathy, dilated cardiomyopathy, and congenital heart disease, mostly atrial septal defect in adults. In many chronic conditions, determining whether AF is the result or is unrelated to the underlying heart disease, remains unclear. The list of possible etiologies also include cardiac amyloidosis, hemochromatosis and endomyocardial fibrosis...
October 1997: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/9264556/direct-evidence-for-antioxidant-effect-of-bcl-2-in-pc12-rat-pheochromocytoma-cells
#12
Y Y Tyurina, V A Tyurin, G Carta, P J Quinn, N F Schor, V E Kagan
Mock-transfected PC12 rat pheochomocytoma cells and PC12 cells transfected with the bcl-2 gene, a gene associated with inhibition of apoptosis, were subjected to oxidative stress by incubation in the presence of the azo-initiator of lipid peroxyl radicals, 2,2'-azobis(2,4-dimethylvaleronitrile) (AMVN). Extraction and chromatographic analysis by two-dimensional TLC of the major phospholipid classes showed no differences in the phospholipid composition between the mock- and bcl-2-transfected cell lines after incubation in the presence of 0...
August 15, 1997: Archives of Biochemistry and Biophysics
https://www.readbyqxmd.com/read/7874082/multiple-promoters-of-human-choline-acetyltransferase-and-aromatic-l-amino-acid-decarboxylase-genes
#13
M Chireux, J F Raynal, A Le Van Thai, H Cadas, C Bernard, I Martinou, J C Martinou, M J Weber
The promoter regions of human choline acetyltransferase (ChAT) and aromatic L-amino acid decarboxylase (AADC) genes have been analyzed by transient transfection assays. AADC gene is transcribed from two alternative noncoding first exons, 1N and 1NN, expressed in pheochomocytoma and hepatoma cells, respectively. 5' flanking sequences of exon 1 N (from 9000 to 147 bp) display promoter activity in SK-N-BE neuroblastoma cells, but not in MC-I-XC cholinergic neuroepithelioma cells, and in AADC-rich non-neuronal cells...
1994: Journal of Physiology, Paris
https://www.readbyqxmd.com/read/7159053/-value-of-the-pentagastrin-test-in-familial-hypercalcitoninemia
#14
A Bodson, P Becquevort, J Dwelshauvers, H Demol, L Michel, G P Alexandre, L Vanderbeck
This report concerns the history of a portugesian family including one case of MEN II a (female, born 1932, presenting medullary carcinoma of the thyroid--MCT--, hyperparathyroidism and suspected pheochomocytoma), and three others with MCT alone or in association with pheochromocytoma. The diagnosis of MCT has been made possible investigating six members of the kindred by use of IR - calcitonin measurements and pentagastrin injection. This provocative screening test is also of interest to follow operated patients...
July 1982: Annales D'endocrinologie
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