Results 11 to 20 of about 4,209 (153)

Lactonase Activity, Status, and Genetic Variations of Paraoxonase 1 in Women with Gestational Diabetes Mellitus

open access: yesJournal of Diabetes Research, 2020
Background. Paraoxonase 1 (PON1) is a calcium-dependent multifunctional enzyme that binds to high-density lipoproteins. The physiological function of PON1 is related to its lactonase activity.
Mi Zhou   +6 more
doaj   +2 more sources

Sensitive Assay for the Lactonase Activity of Serum Paraoxonase 1 (PON1) by Harnessing the Fluorescence Turn-On Characteristics of Bioorthogonally Synthesized and Geometrically Controlled Chemical Probes

open access: yesMolecules, 2022
The lactonase activity of paraoxonase 1 (PON1) has a crucial antiatherogenic function, and also serves as an important biochemical marker in human blood because the aberrant lactonase activity of PON1 is a key indicator for a number of diverse human ...
Bo-Kai Fang   +10 more
doaj   +2 more sources

Low Serum Paraoxonase-1 Lactonase and Arylesterase Activities in Obese Children and Adolescents

open access: yesRomanian Journal of Laboratory Medicine, 2015
Serum paraoxonase-1 (PON1) binds mainly to high density lipoproteins (HDLs) and protects low density lipoproteins (LDLs) against oxidation. While paraoxonase and arylesterase activities are traditionally assayed, lactonase activity, accounting for ...
Sandor Raluca   +6 more
doaj   +2 more sources

Differential active site loop conformations mediate promiscuous activities in the lactonase SsoPox.

open access: yesPLoS ONE, 2013
Enzymes are proficient catalysts that enable fast rates of Michaelis-complex formation, the chemical step and products release. These different steps may require different conformational states of the active site that have distinct binding properties ...
Julien Hiblot   +3 more
doaj   +2 more sources

A novel YtnP lactonase reduces the expression of p. aeruginosa MMA83 quorum sensing andvirulence factors gene expression [PDF]

open access: yes, 2023
Introduction: Quorum quenching (QQ) isthe enzymatic degradation of cell-to-cellsignaling molecules.In this study, the potential of the novel YtnP lactonase, the quorum quenching enzyme derived from S.maltophilia, to reduce P.
Ćurčić, Jovana   +6 more
core   +3 more sources

Longitudinal changes of oxidative stress and PON1 lactonase activity and status in older pregnant women undergoing assisted reproductive technology: a prospective nested case-control study

open access: yesReproductive Biology and Endocrinology, 2023
Background Childbearing in women with advanced maternal age (AMA) has increased the need for artificial reproductive technology (ART). ART and oxidative stress are associated with many pregnancy complications.
Chenyu Jiang   +5 more
doaj   +1 more source

Serum Arylesterase, Paraoxonase, and Lactonase Activities and Paraoxonase-1 Concentrations in Morbidly Obese Patients and Their Relationship with Non-Alcoholic Steatohepatitis

open access: yesAntioxidants, 2023
Paraoxonase-1 (PON1) is an antioxidant enzyme associated with high-density lipoproteins (HDL). Reduced serum PON1 activity is found in diseases marked by oxidative stress and inflammation, but its role in obesity remains unclear.
Helena Castañé   +10 more
doaj   +1 more source

Use of Quorum Sensing Inhibition Strategies to Control Microfouling

open access: yesMarine Drugs, 2021
Interfering with the quorum sensing bacterial communication systems has been proposed as a promising strategy to control bacterial biofilm formation, a key process in biofouling development. Appropriate in vitro biofilm-forming bacteria models are needed
Andrea Muras   +3 more
doaj   +1 more source

Reduced Serum PON1 Lactonase Activity Is Associated with Mild Cognitive Impairment and Mixed Dementia. [PDF]

open access: yesAntioxidants (Basel)
High-density lipoprotein (HDL)-associated paraoxonase-1 (PON1) contributes substantially to the antioxidant and anti-inflammatory functions of HDL. Impairment of these protective properties has been associated with Alzheimer’s disease (AD) and other ...
Riccetti R   +9 more
europepmc   +2 more sources

Expression of paraoxonase 1 in HEK293 cells and its effect on lactonase and arylesterase activity in samples containing human serum and/or prooxidant or antioxidant agents - a preliminary study [PDF]

open access: yesActa Poloniae Pharmaceutica, 2023
Expression of recombinant paraoxonase 1 (PON1) in the human embryonic kidney (HEK293F) cell line was evaluated. Two recombinant human PON1 proteins were investigated: PON1-Fc, which has an Fc-tag on its C-terminal, and His-PON1-Fc, which has an Fc-tag on
Anna Bizoń, Agnieszka Piwowar
doaj   +1 more source

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