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Paraoxonase

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https://www.readbyqxmd.com/read/29659105/lyso-dgts-lipid-isolated-from-microalgae-enhances-pon1-activities-in-vitro-and-in-vivo-increases-pon1-penetration-into-macrophages-and-decreases-cellular-lipid-accumulation
#1
Loureen Dahli, Dana Atrahimovich, Jacob Vaya, Soliman Khatib
High-density lipoprotein (HDL) plays an important role in preventing atherosclerosis. The antioxidant effect of HDL is mostly associated with paraoxonase 1 (PON1) activity. Increasing PON1 activity using nutrients might improve HDL function and quality and thus, decrease atherosclerotic risk. We previously isolated and identified a novel active compound, lyso-DGTS (C20:5,0) from Nannochloropsis sp. ethanol extract. In the present study, its effect on PON1 activities was examined and the mechanism by which the compound affects PON1 activity was explored...
April 16, 2018: BioFactors
https://www.readbyqxmd.com/read/29626583/abnormalities-in-the-relationship-of-paraoxonase-1-with-hdl-and-apolipoprotein-a1-and-their-possible-connection-to-hdl-dysfunctionality-in-type-2-diabetes
#2
Alena Viktorinova, Ingrid Jurkovicova, Lubomira Fabryova, Sona Kinova, Michal Koren, Anna Stecova, Klara Svitekova
AIMS: Lipid parameters, lipid risk indexes and lipid-related oxidative stress markers (paraoxonase 1 [PON1] and lipid peroxides [LPO]) reflect the actual status of lipid metabolism in type 2 diabetes (T2DM). We hypothesized that relationships of high-density lipoprotein cholesterol (HDL-c) with PON1 and apolipoprotein A1 (ApoA1) and/or PON1 with ApoA1 under conditions of hyperglycaemia and oxidative stress might reveal HDL functionality. We investigated relationships between PON1, LPO, and lipid risk markers in T2DM subjects and compared them with those in healthy subjects...
April 4, 2018: Diabetes Research and Clinical Practice
https://www.readbyqxmd.com/read/29611636/serum-paraoxonase-1-activity-and-lipid-metabolism-parameter-changes-in-dachshunds-with-chronic-mitral-valve-disease-assessment-of-its-diagnostic-usefulness
#3
M Kulka, M Garncarz, M Parzeniecka-Jaworska, W Kluciński
Chronic mitral valve disease, which is frequently diagnosed in Dachshunds, leads to structural, hemodynamic and redox state changes in dogs. The aim of this study was to investigate serum paraoxonase 1 (PON1) activity and lipid metabolism in different disease stages. Standardized PON1 activity (PON1/HDL ratio) was lower in asymptomatic dogs, B1 and B2 Stages when compared to healthy ones and symptomatic Dachshunds in Stage C (ACVIM classfication). PON1 paraoxonase activity was elevated in Stage C dogs, with no changes found in PON1 activity towards phenyl acetate...
December 2017: Polish Journal of Veterinary Sciences
https://www.readbyqxmd.com/read/29596921/n-3-oxododecanoyl-l-homoserine-lactone-modulates-mitochondrial-function-and-suppresses-proliferation-in-intestinal-goblet-cells
#4
Shiyu Tao, Liqiong Niu, Liuping Cai, Yali Geng, Canfeng Hua, Yingdong Ni, Ruqian Zhao
AIMS: The quorum-sensing molecule N‑(3‑oxododecanoyl)‑l‑homoserine lactone (C12-HSL), produced by the Gram negative human pathogenic bacterium Pseudomonas aeruginosa, modulates mammalian cell behavior. Our previous findings suggested that C12-HSL rapidly decreases viability and induces apoptosis in LS174T goblet cells. MAIN METHODS: In this study, the effects of 100 μM C12-HSL on mitochondrial function and cell proliferation in LS174T cells treated for 4 h were evaluated by real-time PCR, enzyme-linked immunosorbent assay (ELISA) and flow cytometry...
March 26, 2018: Life Sciences
https://www.readbyqxmd.com/read/29575140/validation-of-a-paraoxon-based-method-for-measurement-of-paraoxonase-pon-1-activity-and-establishment-of-ris-in-horses
#5
Beatrice Ruggerone, Francesca Bonelli, Irene Nocera, Saverio Paltrinieri, Alessia Giordano, Micaela Sgorbini
BACKGROUND: Paraoxonase-1 (PON-1) is an antioxidant compound that is considered a negative acute phase protein. No information on the analytic performance of the paraoxon method for measuring PON-1 in horse serum is available. OBJECTIVES: The aim of this study was to validate a paraoxon-based method to measure PON-1 in horses and to establish RIs in healthy horses and foals. METHODS: Horses and foals classified as healthy after physical examination and routine biochemistry were used in the study...
March 2018: Veterinary Clinical Pathology
https://www.readbyqxmd.com/read/29569857/hdl-associated-paraoxonase-1-activity-correlates-with-systemic-inflammation-disease-activity-and-cardiovascular-risk-factors-in-psoriatic-disease
#6
M Elaine Husni, W H Wilson Tang, Michael Lucke, U M Chandrasekharan, Danielle M Brennan, Stanley L Hazen
OBJECTIVE: To compare the activity of the HDL associated paraoxonase-1 (PON1) in psoriasis (PsO) and psoriatic arthritis (PsA) populations and its association with disease activity and cardiovascular disease (CVD) burden. METHODS: Serum paraoxonase and arylesterase activities (measures of PON1 function in humans) were measured in psoriatic arthritis (n=198, 51.0% male) and psoriasis (n=145, 50.3% male) patients enrolled in a longitudinal psoriatic disease biorepository...
March 23, 2018: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/29564841/role-of-genetic-background-in-cardiovascular-risk-markers-changes-in-water-polo-players
#7
Debora Di Mauro, Monica Currò, Fabio Trimarchi, Mercurio Vecchio, Giuseppina Rizzo, Davide Barreca, Giuseppa Visalli, Riccardo Ientile, Daniela Caccamo
Methylene-tetrahydrofolate reductase (MTHFR) and paraoxonase 1 (PON1) gene polymorphisms have been associated with hyperhomocysteinemia and oxidative stress increase, that are established cardiovascular risk factors. Given that intense physical activity may increase the susceptibility to adverse cardiovascular outcomes, here we investigated the effects of MTHFR C677T and A1298C as well as PON1 Q192R gene polymorphisms on cardiovascular risk markers in twenty-eight male water polo elite players. The mean plasma levels of homocysteine (Hcy) and advanced oxidation protein products (AOPP) were above reference limits in resting conditions, and increased after competition...
March 21, 2018: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/29556488/lipid-associated-antioxidants-arylesterase-and-paraoxonase-1-in-benign-prostatic-hyperplasia-treatment-na%C3%A3-ve-patients
#8
George Awuku Asare, Sabina Ekua Andam, Henry Asare-Anane, Seth Ammanquah, Yvonne Anang-Quartey, Daniel K Afriyie, Iddis Musah
Background: Oxidative stress and antioxidants have been implicated in many diseases including prostate cancer and benign prostatic hyperplasia (BPH). Lipid peroxidation contributes to oxidative stress. However, new and emerging antioxidants such as paraoxonase 1 (PON1) and arylesterase (ARE) associated with lipoprotein peroxidation have not been examined in BPH patients. PON1 and ARE, a high-density lipoprotein (HDL) cholesterol-bound enzyme system of antioxidants, protect low-density lipoprotein (LDL) cholesterol and HDL from oxidation by hydrolysis...
March 2018: Prostate International
https://www.readbyqxmd.com/read/29546656/association-of-pon1-gene-polymorphisms-with-polycystic-ovarian-syndrome-risk-a-meta-analysis-of-case-control-studies
#9
D Liao, H Yu, L Han, C Zhong, X Ran, D Wang, L Mo
PURPOSE: Evidences showed that paraoxonase 1 (PON1) gene polymorphism has an impact on women's susceptibility to polycystic ovarian syndrome (PCOS) by influencing the expression and activity of PON1. However, the effects of three PON1 polymorphisms (- 108 C>T, L55M and Q192R) on the incidence of PCOS have generated inconsistent results. Here, we conducted a meta-analysis to investigate the association between PON1 polymorphisms and PCOS risk. METHODS: All eligible trials were identified via systematic searches of multiple literature databases...
March 15, 2018: Journal of Endocrinological Investigation
https://www.readbyqxmd.com/read/29542039/in-major-affective-disorders-early-life-trauma-predict-increased-nitro-oxidative-stress-lipid-peroxidation-and-protein-oxidation-and-recurrence-of-major-affective-disorders-suicidal-behaviors-and-a-lowered-quality-of-life
#10
Juliana Brum Moraes, Michael Maes, Chutima Roomruangwong, Kamila Landucci Bonifacio, Decio Sabbatini Barbosa, Heber Odebrecht Vargas, George Anderson, Marta Kubera, Andre F Carvalho, Sandra Odebrecht Vargas Nunes
Early life trauma (ELT) may increase the risk towards bipolar disorder (BD) and major depression (MDD), disorders associated with activated neuro-oxidative and neuro-nitrosative stress (O&NS) pathways. It has remained elusive whether ELTs are associated with O&NS and which ELTs are associated with distinct affective disorder phenotypes. This case-control study examined patients with BD (n = 68) and MDD (n = 37) and healthy controls (n = 66). The Child Trauma Questionnaire (CTQ) was used to assess specific ELT...
March 14, 2018: Metabolic Brain Disease
https://www.readbyqxmd.com/read/29531225/paraoxonase-2-overexpression-inhibits-tumor-development-in-a-mouse-model-of-ovarian-cancer
#11
Asokan Devarajan, Feng Su, Victor Grijalva, Meghna Yalamanchi, Ashna Yalamanchi, Feng Gao, Hannah Trost, Josephine Nwokedi, Gina Farias-Eisner, Robin Farias-Eisner, Alan M Fogelman, Srinivasa T Reddy
Ovarian cancer (OC) is most lethal malignancy among all gynecological cancer. Large bodies of evidences suggest that mitochondrial-derived ROS play a critical role in the development and progression of OC. Paraoxonase 2 (PON2) is a membrane-associated lactonase with anti-oxidant properties. PON2 deficiency aggravates mitochondrial ROS formation, systemic inflammation, and atherosclerosis. The role of PON2 in cancer development remains unknown. In this report, in human, we identified that PON2 expression is higher in early stages (but not in late stages) of OC when compared to normal tissue...
March 12, 2018: Cell Death & Disease
https://www.readbyqxmd.com/read/29525848/trace-elements-and-paraoxonase-1-activity-in-lower-extremity-artery-disease
#12
Joaquim Rovira, Anna Hernández-Aguilera, Fedra Luciano-Mateo, Noemí Cabré, Gerard Baiges-Gaya, Martí Nadal, Vicente Martín-Paredero, Jordi Camps, Jorge Joven, José L Domingo
Oxidative stress and inflammation are candidate mechanisms to explain the potential role of exposure to metals and reduced activity of paraoxonase-1 (PON1) in age-related diseases. Both may be risk factors contributing to atherosclerosis. In the present study, inductively coupled mass spectrometry was used to explore multiple trace elements, while in-house methods were employed to measure PON1-related variables in patients with lower extremity artery disease (LEAD). Healthy controls were matched for sex, age, body weight, and relevant genotype variants...
March 10, 2018: Biological Trace Element Research
https://www.readbyqxmd.com/read/29525843/proteomic-analysis-of-plasma-from-rheumatoid-arthritis-patients-with-mild-cognitive-impairment
#13
Li Yang, Qing-Hua Zou, Yan Zhang, Yin Shi, Chun-Rong Hu, Cai-Xia Hui, Xiao-Fei Liu, Yong-Fei Fang
Rheumatoid arthritis (RA) patients may suffer from comorbid neuropsychiatric symptoms including mild cognitive impairment (MCI). Although comorbidity of MCI is common, there are currently no validated plasma biomarkers to aid MCI diagnosis. This study screened plasma from patients with RA with and without comorbid MCI to identify potential biomarkers useful in the differential diagnosis of comorbid MCI. Plasma samples were collected from patients with RA without comorbid MCI, with comorbid MCI, and from healthy controls...
March 10, 2018: Clinical Rheumatology
https://www.readbyqxmd.com/read/29520723/high-doses-of-boron-have-no-protective-effect-against-nephrolithiasis-or-oxidative-stress-in-a-rat-model
#14
Ayse Betul Ergul, Mehmet Kara, Cigdem Karakukcu, Arzu Tasdemir, Humeyra Aslaner, Mehmet Ali Ergul, Sebahattin Muhtaroglu, Gozde Erturk Zararsiz, Yasemin Altuner Torun
Boron plays roles in the metabolism of calcium, vitamin D, steroid hormones, healthy bone development, and maintenance of cell membranes. The biological effects of boron are dose-dependent but follow a U-shaped pattern, rendering it important to define the active range. The studies of Bahadoran et al. on rats and Naghii et al. on humans showed that low doses of boron (3 and 10 mg/day) prevented kidney stone formation. The aim of this study was to determine whether high doses of boron have an anti-urolithiatic or antioxidant effect on nephrolithiasis in an experimental rat model...
March 8, 2018: Biological Trace Element Research
https://www.readbyqxmd.com/read/29511577/the-relationship-between-lipoprotein-associated-phospholipase-a2-with-cardiovascular-risk-factors-in-testosterone-deficiency
#15
Mustafa Keleşoğlu, Fuat Kızılay, Burcu Barutçuoğlu, Güneş Başol, Fulden Saraç, Işıl Mutaf, Bülent Semerci
Objective: Lipoprotein-associated phospholipase A2 (Lp-PLA2) which is believed to play a role in atherosclerotic inflammatory process due to its function in hydrolysis of phospholipids and release of pro-inflammatory products, is considered as a novel biomarker for vascular risk. In this study we aimed to investigate the alterations in Lp-PLA2 and its relationship with other cardiovascular risk factors in patients with testosterone deficiency. Material and methods: Forty hypogonadic male and 30 healthy male aged between 18-50 years were enrolled in this study...
March 2018: Turkish Journal of Urology
https://www.readbyqxmd.com/read/29505784/hypolipidemic-antioxidant-and-antiatherogenic-property-of-sardine-by-products-proteins-in-high-fat-diet-induced-obese-rats
#16
Fouad Affane, Sabrine Louala, Nour El Imane Harrat, Fatima Bensalah, Hadjera Chekkal, Amine Allaoui, Myriem Lamri-Senhadji
AIMS: Fish by-products valorization on account of their richness in bioactive compounds may represent a better alternative to marine products with a view to economic profitability and sustainable development. In this study, we compared the effect of sardine by-product proteins (SBy-P), with those of the fillets (SF-P) or casein (Cas), on growth parameters, serum leptin level, lipids disorders, lipid peroxidation and reverse cholesterol transport, in diet-induced obese rats. MAIN METHODS: Obesity was induced by feeding rats a high-fat diet (20% sheep fat), during 12 weeks...
March 2, 2018: Life Sciences
https://www.readbyqxmd.com/read/29501765/naringin-enhances-reverse-cholesterol-transport-in-high-fat-low-streptozocin-induced-diabetic-rats
#17
Solomon Oladapo Rotimi, Isaacson Bababode Adelani, Goodness Esther Bankole, Oluwakemi Anuoluwapo Rotimi
Naringin, a citrus-derived flavonoid with antihyperglycemic, antihyperlipidemic, and antioxidant properties, is reported to be a useful nutraceutical in the management of diabetes and its complications. This study investigated the mechanism of antiatherogenic properties of naringin in type 2 diabetes (T2DM) using high fat-low streptozocin rat model of T2DM. Rats were treated daily with 50, 100 and 200 mg/kg naringin orally for 21days. Levels of biomarkers of T2DM, lipid profile and activity of paraoxonase (PON) were assayed spectrophotometrically...
March 1, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29463406/chlorpyrifos-induced-parkinsonian-model-in-mice-behavior-histopathology-and-biochemistry
#18
Haci Ahmet Deveci, Mahmut Karapehlivan
INTRODUCTION: The aim of this study was to investigate the protective effect of caffeic acid phenethyl ester (CAPE) on Paraoxonase (PON1) activity, and levels of lipid profile, total sialic acid (TSA), total antioxidant capacity (TAC) and total oxidant capacity (TOC) in the plasma and brain tissue of mice with chlorpyrifos-ethyl (CPF)-induced Parkinson. MATERIAL AND METHOD: In the study, 35 male Swiss albino mice were divided into 5 groups including equal number of mice as follows; intraperitoneal injection of saline for mice in control (C) group, subcutaneous injection of 80mg/kg CPF for CPF group, intraperitoneal injection of 10μmol/kg CAPE for CAPE group, subcutaneous injection of 80mg/kg CPF and intraperitoneal injection of 10μmol/kg CAPE for CPF+CAPE group and intraperitoneal injection of 10% ethanol diluted in physiological saline solution for 21days for ethanol (E) group...
January 2018: Pesticide Biochemistry and Physiology
https://www.readbyqxmd.com/read/29462810/consumption-of-amaranth-induces-the-accumulation-of-the-antioxidant-protein-paraoxonase-arylesterase-1-and-modulates-dipeptidyl-peptidase-iv-activity-in-plasma-of-streptozotocin-induced-hyperglycemic-rats
#19
Aída J Velarde-Salcedo, Evelyn Regalado-Rentería, Rodrigo Velarde-Salcedo, Bertha I Juárez-Flores, Alberto Barrera-Pacheco, Elvira González de Mejía, Ana P Barba de la Rosa
BACKGROUND/AIM: Amaranth is a source of several bioactive compounds, among which peptides with inhibitory activity upon dipeptidyl peptidase IV (DPP-IV) have been reported. However, there is no information about the action of amaranth DPP-IV-inhibitory peptides using in vivo models. The aim of this work was to evaluate the effect of amaranth consumption on plasma and kidney DPP-IV activity as well the changes in plasma proteome profile of streptozotocin (STZ)-induced hyperglycemic rats...
February 20, 2018: Journal of Nutrigenetics and Nutrigenomics
https://www.readbyqxmd.com/read/29462797/functional-snp-in-the-3-utr-of-pon1-is-associated-with-the-risk-of-calcific-aortic-valve-stenosis-via-mir-616
#20
Zhengjun Wang, Shiqiao Chen, Mei Zhu, Wenlong Zhang, Haizhou Zhang, Hongxin Li, Chengwei Zou
BACKGROUND/AIMS: Previous studies have examined the associations between the single nucleotide polymorphism in the Paraoxonase 1 (PON1) gene and development of calcific aortic valve stenosis (CAVS). The association between functional SNP in 3'UTR of PON1 and the risk of CAVS, however, is unclear. In this study, we investigated the role of SNP in the regulation of PON1 expression via miR-616, as well as the association of SNP with the risk of CAVS. METHODS: Two hundred and sixteen patients with CAVS and 243 CAVS-free participants were recruited in this study...
February 15, 2018: Cellular Physiology and Biochemistry
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