Results 201 to 210 of about 7,533 (241)

Evaluation of Serum Paraoxonase, Arylesterase, Prolidase Activities and Oxidative Stress in Patients with Alopecia Areata

Skin Pharmacology and Physiology, 2018
Background: Alopecia areata (AA) is a disease characterized by the hair loss sharply limited in any part of the body, especially on the scalp, in circular or oval areas.
N. Dizen-Namdar, Fatma Emel Koçak, Mehtap Kıdır, G. Sarici, Hasan Tak, I. Altuntaş   +5 more
semanticscholar   +1 more source

Continuous monitoring of arylesterase in human serum

Clinica Chimica Acta, 2001
Arylesterase (EC 3.1.1.2) activity in serum was specifically measured using thiophenyl acetate in a mechanized assay at 37 degrees C with 4-bromophenylboronic acid as inhibitor of cholinesterase and hexacyanoferrate-III as indicator. The systematic development of a routine method, apparent limitations of thiophenyl compounds as arylesterase substrates,
K, Lorentz, W, Wirtz, T, Weiss
openaire   +2 more sources

Rat liver paraoxonase (paraoxon arylesterase)

Pesticide Biochemistry and Physiology, 1984
Abstract Paraoxonase in the liver of male Sprague-Dawley rats was studied by using [ phenyl -1- 14 C]paraoxon. Examination of the enzyme activity in subcellular fractions of liver homogenates indicated that hepatic paraoxonase is essentially a microsomal enzyme with a pH optimum of 7.5 to 7.8.
Jane E. McIlvain, Julita Timoszyk, Tsutomu Nakatsugawa   +2 more
openaire   +1 more source

Serum arylesterase (paraoxonase) activity following myocardial infarction

Clinica Chimica Acta, 1989
Arylesterase (Aryl-ester hydrolase, paraoxonase, E.C. 3.1.1.2) hydrolyzes paraoxone, the active metabolite of the organophosphorous insecticide parathione, into p-nitrophenol and diethylphosphate. Although the natural substrate remains unknow, calcium (Ca’+) is known to be an essential co-factor [l]. The arylesterase assay was clinically applied in the
S, Secchiero, M, Mussap, M, Zaninotto, R, Bertorelle, A, Burlina   +4 more
openaire   +2 more sources

Paraoxonase and arylesterase levels in rheumatoid arthritis

Clinical Rheumatology, 2006
It was reported that lipid peroxidation (LPO) products increase in rheumatoid arthritis (RA) patients and increased LPO products reduce many antioxidants. Lipid hydroperoxides (LOOHs) are byproduct of LPO. Paraoxonase (PON), arylesterase (ARE), free sulfhydryl (SH) groups, and ceruloplasmin (CP) are enzymes or proteins with antioxidant characteristics.
A, Isik, S S, Koca, B, Ustundag, H, Celik, A, Yildirim   +4 more
openaire   +2 more sources

Paraoxonase-1 and arylesterase levels in patients with ulcerative colitis.

Arab Journal of Gastroenterology, 2019
BACKGROUND AND STUDY AIMS The role of oxidative stress in inflammatory bowel disease is increasingly recognised as an important factor. It is assumed that reduced levels of paraoxonase-1 (PON-1) and arylesterase (ARE) may lead to increased inflammation ...
M. Sahin, O. Bobusoglu, Aylin Yetim, F. Ateş   +3 more
semanticscholar   +1 more source

Characterization of an arylesterase from Lactobacillus helveticus CNRZ32

Journal of Applied Microbiology, 2000
An esterase gene (estA) was isolated from a previously constructed genomic library of Lactobacillus helveticus CNRZ32. The estA gene consisted of a 558 bp open reading frame encoding a putative peptide of 21.3 kDa. Protein sequence homology searches using BLAST revealed that EstA had low amino acid sequence identity with the serine-dependent ...
K M, Fenster, K L, Parkin, J L, Steele
openaire   +2 more sources

Inhibition of human serum arylesterase by metal chlorides

Journal of Inorganic Biochemistry, 2003
The inhibition of arylesterase (paraoxonase, EC 3.1.8.1) by metal chlorides was studied with both pooled human serum (A phenotype) and purified enzyme, using phenyl acetate as substrate. Inhibition data were analysed with the Hill equation. Results obtained with whole serum and purified enzyme were very similar.
Jean, Debord, Jean-Claude, Bollinger, Louis, Merle, Thierry, Dantoine   +3 more
openaire   +2 more sources

Decreased serum arylesterase activity in autism spectrum disorders

Psychiatry Research, 2010
The PON1 gene, previously found associated with autism spectrum disorders (ASDs), encodes a serum protein responsible for the detoxification of organophosphates (OPs) and able to exert several enzymatic activities. PON1 arylesterase, but not diazoxonase activity, was significantly decreased in 174 ASD patients compared to 175 first-degree relatives and
Gaita, Laura, Manzi, Barbara, Sacco, Roberto, Lintas, Carla, Altieri, Laura, Lombardi, Federica, Pawlowski, Tracy L., Redman, Margot, Craig, David W., Huentelman, Matthew J., Ober-Reynolds, Sharman, Brautigam, Sarah, Melmed, Raun, Smith, Christopher J., Marsillach, Judith, Camps, Jordi, Curatolo, Paolo, Persico, Antonio M.   +17 more
openaire   +6 more sources

Arylesterases in blood: Effect of calcium and inhibitors

Biochemical Pharmacology, 1960
Abstract (1) The normal functioning of human serum arylesterase requires the presence of calcium. An enzyme in human plasma fraction IV-I is probably identical with serum arylesterase. The activity of arylesterase is accelerated by calcium, inhibited by various chelating agents, metal ions, SH-reagents, and competitively and reversibly inhibited by ...
E G, ERDOS, C R, DEBAY, M P, WESTERMAN
openaire   +2 more sources