Results 21 to 30 of about 9,418 (266)

Evaluation of Metanephrine and Lactate Dehydrogenase in Pediatric Wilms Tumor and Neuroblastom

مجلة كلية الطب
Background: Wilms' tumor and Neuroblastoma are common pediatric malignancies, with biochemical markers like plasma metanephrines and serum lactate dehydrogenase (LDH) being studied for diagnostic and prognostic values.
Nihad Atea Jwda, Manal Kamal Rasheed, Hasanein H. Ghali   +2 more
openalex   +4 more sources

Accurate Location of Catheter Tip With the Free-to-Total Metanephrine Ratio During Adrenal Vein Sampling

Frontiers in Endocrinology, 2022
BackgroundThe selectivity index (SI) of cortisol is used to document correct catheter placement during adrenal vein sampling (AVS) in patients with primary aldosteronism (PA).
Foteini Christou, Edward Pivin, Alban Denys, Karim A. Abid, Tobias Zingg, Maurice Matter, Antoinette Pechère-Bertschi, Marc Maillard, Eric Grouzmann, Gregoire Wuerzner   +9 more
doaj   +1 more source

Metanephrine negative pheochromocytoma: a rare case report of dopamine-secreting tumor in an adolescent neurofibromatosis type 1 patient [PDF]

Annals of Pediatric Endocrinology & Metabolism, 2022
Pheochromocytoma (PCC) occurs in 4% of pediatric neurofibromatosis type 1 (NF1) patients and is characterized by epinephrine and norepinephrine secretion. Herein, we report the first case of dopamine-secreting PCC in a 13-year-old patient with NF1.
Mi-Seon Lee, Rosie Lee, Sook-Hyun Park, Soonhak Kwon, Jinyoung Park, Sang‐Woo Lee, So Mi Lee, Jung-Eun Moon   +7 more
openalex   +3 more sources

Plasma-Free Metanephrine and Normetanephrine Quantification for Clinical Applications Validated by Combining Solid-Phase Extraction and HPLC-MS/MS. [PDF]

Molecules
Plasma-free metanephrines are the most sensitive and specific biochemical markers for diagnosing catecholamine-secreting tumors, such as pheochromocytoma and paraganglioma.
Choi H, Yim J, Yun J, Lee JK, Kim KJ, Nam M, Nam MH, Cho Y, Yun SG.   +8 more
europepmc   +2 more sources

Metanephrine and Normetanephrine Urine Excretion in Patients with PCOS

Acta Medica Bulgarica, 2022
Aims: The present study aims to investigate the association between catecholamine metabolites (normetanephrine [NMN] and metanephrine [MN]) and polycystic ovarian syndrome (PCOS) and its clinical manifestations.
Robeva R., Arnaudova N., Kirilov G., Elenkova A., Zacharieva S.   +4 more
doaj   +1 more source

Dual-Template Magnetic Molecularly Imprinted Polymer for Simultaneous Determination of Spot Urine Metanephrines and 3-Methoxytyramine for the Diagnosis of Pheochromocytomas and Paragangliomas

Molecules, 2022
A novel dual-template magnetic molecularly imprinted polymer (MMIP) was synthesized to extract normetanephrine (NMN), metanephrine (MN) and 3-methoxytyramine (3-MT) from spot urine samples.
Hongyu Zeng, Xiaoqing Zhang, Qianna Zhen, Yifan He, Haoran Wang, Yang Zhu, Qi Sun, Min Ding   +7 more
doaj   +1 more source

Multivariate Statistical Approach for Nephrines in Women with Obesity

Molecules, 2021
Catecholamines are physiological regulators of carbohydrate and lipid metabolism during stress, but their chronic influence on metabolic changes in obese patients is still not clarified.
Ralitsa Robeva, Miroslava Nedyalkova, Georgi Kirilov, Atanaska Elenkova, Sabina Zacharieva, Błażej Kudłak, Natalia Jatkowska, Vasil Simeonov   +7 more
doaj   +1 more source

Phasing-in plasma metanephrines determination [PDF]

European Journal of Endocrinology, 2013
ObjectivesWe set up plasma normetanephrine (pNMA) and metanephrine (pMA) assays as they demonstrated their usefulness for diagnosing phaeochromocytomas. Our scope is to describe some practical laboratory aspects and the clinical relevance of these assays in our endocrinological or cardiological departments.MethodsWe retrospectively reviewed the results
Brossaud, Julie, Gosse, Philippe, Gatta, Blandine, Tabarin, Antoine, Simonnet, Guy, Corcuff, Jean-Benoît   +5 more
openaire   +4 more sources

Serial Hydrolysis for the Simultaneous Analysis of Catecholamines and Steroids in the Urine of Patients with Alopecia Areata

Molecules, 2021
Catecholamines and steroids are well-known neurotransmitters and hormones that rapidly change the excitability of neurons. Alopecia areata is a disease for which the exact cause is unknown, but it is considered to be associated with stress, and so the ...
Yu-Ra Lee, Bark-Lynn Lew, Woo-Young Sim, Jongki Hong, Bong-Chul Chung   +4 more
doaj   +1 more source

Plasma metanephrines in renal failure [PDF]

Kidney International, 2005
Diagnosis of pheochromocytoma in renal failure poses a diagnostic dilemma due to lack of reliability of conventional urinary measurements of catecholamine excess. Measurements of the plasma metanephrines, normetanephrine and metanephrine (the O-methylated metabolites of norepinephrine and epinephrine), provide an alternative diagnostic test.
Eisenhofer, G., Huysmans, F.T.M., Pacak, K., Walther, M.M., Sweep, C.G.J., Lenders, J.W.M.   +5 more
openaire   +3 more sources