Results 221 to 230 of about 9,658 (273)

An increase in normetanephrine in hair follicles of acne lesions through the sympatho‐adrenal medullary system in acne patients with anxiety

Journal of dermatology (Print), 2021
Acne vulgaris, a chronic inflammatory skin disease, has been associated with not only sebaceous gland dysfunction but also various endogenous and exogenous stresses.
K. Mizuno, H. Sakaue, Keita Kohsaka, Hidetomo Takeda, Nobukazu Hayashi, Takashi Sato   +5 more
semanticscholar   +1 more source

Increased Plasma Normetanephrine in Spontaneously Hypertensive Rats

Clinical and Experimental Hypertension, 1980
Plasma catecholamine and total plasma normetanephrine concentrations were determined in 11 spontaneously hypertensive rats (SHR) and in 11 age and sex matched Wistar Kyoto control rats (WKy). Plasma norepinephrine concentration, obtained from tail vein blood of restrained rats, was 356 +/- 67 pg/ml in SHR and 297 +/- 61 in WKy (NS), whereas epinephrine
N D, Vlachakis, N, Alexander, R F, Maronde   +2 more
openaire   +2 more sources

High specificity and sensitivity of spot urine normetanephrine-to-creatinine ratios in the diagnosis of canine pheochromocytoma.

Journal of the American Veterinary Medical Association
OBJECTIVE To evaluate the specificity/sensitivity and predictive values of urine spot metanephrines-to-creatinine ratios to diagnose canine pheochromocytomas and to determine whether there is a correlation between urine catecholamine levels and tumor ...
Carly Waldron, D. Thamm, Maegan L Watson-Skaggs, A. Vinayak   +3 more
semanticscholar   +1 more source

Enzymatic conversion of metanephrine to normetanephrine

Experientia, 1960
In der Mikrosomen-Fraktion der Leber von Kaninchen, Ratte und Meerschweinchen wurde ein Ferment gefunden, welches Metanephrin zu Normetanephrin unter Formaldehydbildung N-demethylieren kann.
openaire   +2 more sources

Exercise induces excessive normetanephrine responses in hypertensive diabetic patients

European Journal of Clinical Investigation, 2003
AbstractBackground Exaggerated sympathoadrenal function has been accused of contributing to hypertension in type‐2 diabetes. Recently, plasma unconjugated (free) metanephrines were reported to be stable markers of catecholamine hypersecretion. Thus, we aimed to examine whether unconjugated metanephrines are reliable markers of stress response induced ...
W, Raber, W, Raffesberg, W, Waldhäusl, S, Gasic, M, Roden   +4 more
openaire   +2 more sources

Degradation of normetanephrine and norparanephrine in human blood

Biochemical Pharmacology, 1971
Abstract Normeta- and norparanephrine disappear at similar rates when incubated with human blood. The simultaneous appearance of noradrenaline demonstrates that at least a part of this degradation is caused by O -demethylation. Human blood seems to contain one or several enzymatic system(s) able to degrade ortho-methoxy phenols specifically.
openaire   +2 more sources

Quantitative Determination of Metanephrine and Normetanephrine in Urine

1966
Details of a fluorometric method for the separate determination of free and conjugated metanephrine and normetanephrine in urine are presented. The procedure consists of: (1) a separation and concentration of free amines by absorption on a column of Dowex-50 resin followed by elution with a small volume of aqueous ammonia; (2) acid hydrolysis of the ...
K, TANIGUCHI, Y, KAKIMOTO, M D, ARMSTRONG   +2 more
openaire   +2 more sources

Intraabdominal pulmonary sequestration presenting with elevated urinary normetanephrine levels

Journal of Pediatric Surgery, 2009
Carrying a prenatal diagnosis of a left-sided intraabdominal mass, a term female newborn underwent postnatal imaging that confirmed a left suprarenal mass. Urinary normetanephrine levels were elevated. Given a preoperative diagnosis of neuroblastoma, the baby underwent an uneventful resection of the mass en bloc with the left adrenal gland.
Samuel M, Alaish, Jose, Greenspon, Eric D, Strauch, Chen-Chih, Sun   +3 more
openaire   +2 more sources

Conjugated normetanephrine in human and rat plasma and erythrocytes

Biochemical Pharmacology, 1984
Enzymatic hydrolysis was applied to the deconjugation of normetanephrine (NMN) in plasma and red blood cell lysate. By this procedure, in human plasma 77% of total NMN circulated in sulfate-conjugated form, while in rat plasma 63% was in glucuronidated form.
S, Yoneda, N, Alexander, N D, Vlachakis
openaire   +2 more sources

A simple analysis for normetanephrine and metanephrine in urine

Clinica Chimica Acta, 1960
Abstract A simple method is described tor tlu' determination of the total metanephrine and normetanephrine in urine. The urinary metabolites are adsorbed on Amberlite CG 50, eluted and converted to vanillin which is assayed spectrophotometrically. The daily excretion of the metanephrines in normal urine is less than 1 mg/day.
openaire   +2 more sources