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paraoxonase 1

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https://www.readbyqxmd.com/read/28942826/nitric-oxide-synthase-inhibitors-protect-against-brain-and-liver-damage-caused-by-acute-malathion-intoxication
#1
Omar M E Abdel-Salam, Eman R Youness, Nadia A Mohammed, Noha N Yassen, Yasser A Khadrawy, Safinaz Ebrahim El-Toukhy, Amany A Sleem
OBJECTIVE: To investigate the effect of N(G)-nitro-l-arginine methyl ester (l-NAME), a non-selective nitric oxide synthase (NOS) inhibitor, and 7-nitroindazole (7-NI), a selective neuronal NOS inhibitor, on oxidative stress and tissue damage in brain and liver and on DNA damage of peripheral blood lymphocytes in malathion intoxicated rats. METHODS: Malathion (150 mg/kg) was given intraperitoneally (i.p.) along with l-NAME or 7-NI (10 or 20 mg/kg, i.p.) and rats were euthanized 4 h later...
August 2017: Asian Pacific Journal of Tropical Medicine
https://www.readbyqxmd.com/read/28940111/hyperuricemia-is-associated-with-increased-apo-ai-fractional-catabolic-rates-and-dysfunctional-hdl-in-new-zealand-rabbits
#2
Miriam Martínez-Ramírez, Cristóbal Flores-Castillo, L Gabriela Sánchez-Lozada, Rocío Bautista-Pérez, Elizabeth Carreón-Torres, José Manuel Fragoso, José Manuel Rodriguez-Pérez, Fernando E García-Arroyo, Victoria López-Olmos, María Luna-Luna, Gilberto Vargas-Alarcón, Martha Franco, Oscar Pérez-Méndez
The potential cause-effect relationship between uric acid plasma concentrations and HDL functionality remains elusive. Therefore, this study aimed to explore the effect of oxonic acid (OA)-induced hyperuricemia on the HDL size distribution, lipid content of HDL subclasses, and apo AI turnover, as well as HDL functionality in New Zealand white rabbits. Experimental animals received OA 750 mg/kg/day by oral gavage during 21 days. The HDL-apo AI fractional catabolic rate (FCR) was determined by exogenous labeling with (125)I, and HDL subclasses were determined by sequential ultracentrifugation and PAGE...
September 22, 2017: Lipids
https://www.readbyqxmd.com/read/28932603/the-protective-effect-of-naringenin-oxime-on-cisplatin-induced-toxicity-in-rats
#3
Ismail Koyuncu, Abdurrahim Kocyigit, Ataman Gonel, Erkan Arslan, Mustafa Durgun
The aim of this study is to examine the protective effect of naringenin-oxime (NOX) on cisplatin-induced major organ toxicity and DNA damage in rats. Thirty-five male Wistar albino rats were equally split into five groups as follows: control (i.p., 0.1 ml of saline), Cis administration (i.p., 7 mg/kg b.w.), NOX treatment (i.p., 20 mg/kg b.w., daily for ten days), Cis + NOX20, and Cis + NOX40 combination (i.p., 20 and 40 mg/kg b.w., daily for ten days). Serum and peripheral blood mononuclear leukocytes (PBMC) were obtained from blood...
2017: Biochemistry Research International
https://www.readbyqxmd.com/read/28918137/reticulo-rumen-mass-epithelium-gene-expression-and-systemic-biomarkers-of-metabolism-and-inflammation-in-holstein-dairy-cows-fed-a-high-energy-diet
#4
J M Arroyo, A Hosseini, Z Zhou, A Alharthi, E Trevisi, J S Osorio, J J Loor
Feeding a higher-energy diet by increasing cereal grains at the expense of forage during the last 3 to 4 wk prepartum is a traditional approach to help the rumen "adapt" to the traditional diets fed at the onset of lactation. Increasing grain/concentrate in the diet changes ruminal fermentation and in sheep and goats elicits marked changes in mRNA expression of immune-related genes in ruminal epithelium. Whether such changes at the epithelial and systemic levels occur in dairy cows when the dietary energy content increases at a fixed level of concentrate is unknown...
September 13, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28905934/conversion-and-pharmacokinetics-profiles-of-a-novel-pro-drug-of-3-n-butylphthalide-potassium-2-1-hydroxypentyl-benzoate-in-rats-and-dogs
#5
Jiang Li, Shao-Feng Xu, Ying Peng, Nan Feng, Ling Wang, Xiao-Liang Wang
Potassium 2-(1-hydroxypentyl)-benzoate (dl-PHPB) is a novel pro-drug of 3-n-butylphthalide (dl-NBP) that is used to treat ischemic stroke. Currently, dl-PHPB is in phase II-III clinical trials in China. In this study, we investigated the conversion and pharmacokinetics profiles of dl-PHPB in vitro and in vivo. The conversion of dl-PHPB to dl-NBP was pH- and calcium-dependent, and paraoxonase was identified as a major enzyme for the conversion in rat plasma. The pharmacokinetics, tissue distribution and excretion of dl-PHPB were studied and compared with equal-molar doses of dl-NBP in rats and dogs...
September 14, 2017: Acta Pharmacologica Sinica
https://www.readbyqxmd.com/read/28903084/sepsis-mortality-score-for-the-prediction-of-mortality-in-septic-patients
#6
Wan Fadzlina Wan Muhd Shukeri, Azrina Md Ralib, Nor Zamzila Abdulah, Mohd Basri Mat-Nor
PURPOSE: To derive a prediction equation for 30-day mortality in sepsis using a multi-marker approach and compare its performance to the Sequential Organ Failure Assessment (SOFA) score. METHODS: This study included 159 septic patients admitted to an intensive care unit. Leukocytes count, procalcitonin (PCT), interleukin-6 (IL-6), and paraoxonase (PON) and arylesterase (ARE) activities of PON-1 were assayed from blood obtained on ICU presentation. Logistic regression was used to derive sepsis mortality score (SMS), a prediction equation describing the relationship between biomarkers and 30-day mortality...
September 6, 2017: Journal of Critical Care
https://www.readbyqxmd.com/read/28884082/effects-of-pomegranate-seed-oil-on-oxidant-antioxidant-balance-in-heart-and-kidney-homogenates-and-mitochondria-of-diabetic-rats-and-high-glucose-treated-h9c2-cell-line
#7
Hamid Mollazadeh, Mohammad Taher Boroushaki, Mohammad Soukhtanloo, Amir Reza Afshari, Mohammad Mahdi Vahedi
OBJECTIVE: Oxidative stress is a major cause of diabetes complications. The present study aimed to investigate the beneficial effects of Pomegranate Seed Oil (PSO) on diabetes-induced changes in oxidant/antioxidant balance of the kidney, heart and mitochondria from rats and H9c2 cell line. MATERIALS AND METHODS: In these in vivo and in vitro studies, male rats were divided into four groups (twelve each): group 1 served as control, group 2-4 received a single dose of streptozotocin (60 mg/kg, i...
July 2017: Avicenna Journal of Phytomedicine
https://www.readbyqxmd.com/read/28875477/effects-of-pon1-gene-promoter-dna-methylation-and-genetic-variations-on-the-clinical-outcomes-of-dual-antiplatelet-therapy-for-patients%C3%A2-undergoing-percutaneous-coronary-intervention
#8
He-Ping Lei, Xi-Yong Yu, Hong Wu, Yan-Hong Kang, Wan-Ping Zhong, Li-Yun Cai, Meng-Zhen Zhang, Ji-Yan Chen, Li-Ping Mai, Qing-Shan Ding, Min Yang, Shi-Long Zhong
INTRODUCTION AND OBJECTIVE: The relationship between either paraoxonase 1 (PON1) gene promoter DNA methylation or genetic variations and bleeding or major adverse cardiac events after dual antiplatelet therapy has been incompletely characterized. We aimed to systematically investigate the role of genetic variations and DNA methylation of the PON1 CpG island promoter on the clinical outcomes of dual antiplatelet therapy for patients with coronary artery disease (CAD) who underwent percutaneous coronary intervention (PCI)...
September 5, 2017: Clinical Pharmacokinetics
https://www.readbyqxmd.com/read/28874705/serum-lysophospholipid-levels-are-altered-in-dyslipidemic-hamsters
#9
Susana Suárez-García, Antoni Caimari, Josep Maria Del Bas, Manuel Suárez, Lluís Arola
Dyslipidemias are common disorders that predispose individuals to severe diseases. It is known that healthy living habits can prevent dyslipidemias if they are diagnosed properly. Therefore, biomarkers that assist in diagnosis are essential. The aim of this study was to identify biomarkers of dyslipidemia progression, which in turn disclose its etiology. These findings will pave the way for examinations of the regulatory mechanisms involved in dyslipidemias. Hamsters were fed either a normal-fat diet (NFD) or a high-fat diet...
September 5, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28866115/association-between-promoter-polymorphism-108c-t-of-paraoxonase1-gene-and-it-s-paraoxonase-activity-in-patients-with-type2-diabetes-in-northern-iran
#10
Raheleh Shakeri, Safoura Khajeniazi, Abdoljalal Marjani
Type 2 diabetes mellitus (T2DM) is one of the diseases which depend on the obesity associated with insulin resistance. Various factors, such as a reduction in the activity of paraoxonase-1 enzyme (PON1), could affect T2DM. PON1 is a multifunctional enzyme with paraoxonase and arylesterase activities. The Activity of PON1 is influenced by various SNPs. The aim of presence study is to investigate the association between promoter polymorphism (-108C>T) of PON1 gene and its paraoxonase activity in patients suffering from Type 2 diabetes in Golestan Province, north of Iran...
September 1, 2017: Clinica Chimica Acta; International Journal of Clinical Chemistry
https://www.readbyqxmd.com/read/28861298/a-pilot-study-assessing-the-association-between-paraoxonase-1-gene-polymorphism-and-prostate-cancer
#11
Nihat Uluocak, Doğan Atılgan, Bekir Süha Parlaktaş, Fikret Erdemir, Ömer Ateş
OBJECTIVE: We aimed to show the relationship between paraoxonase 1 (PON1) gene polymorphism and the development of prostate cancer (PCa). MATERIAL AND METHODS: We investigated the association of single nuclotide polymorphisms of PON1 enzyme with the development of PCa risk. A total of 147 male patients were divided into PCa, and control groups. The control group was also divided into two subgroups according to serum prostate specific antigen (PSA) levels as non PCa-high PSA (>4 ng/mL) and non PCa-low PSA (≤4 ng/mL) groups...
September 2017: Turkish Journal of Urology
https://www.readbyqxmd.com/read/28855433/effects-of-cardiac-rehabilitation-on-high-density-lipoprotein-mediated-cholesterol-efflux-capacity-and-paraoxonase-1-activity-in-patients-with-acute-coronary-syndrome
#12
Fumiaki Furuyama, Shinji Koba, Yuya Yokota, Fumiyoshi Tsunoda, Makoto Shoji, Youichi Kobayashi
AIMS: We evaluated whether exercised-based cardiac rehabilitation (CR) can ameliorate the HDL function, i.e., cholesterol efflux capacity (CEC) and paraoxonase-1 activity in patients with acute coronary syndrome (ACS). METHODS: This study is a retrospective analysis of stored serum from patients with ACS following successful percutaneous coronary intervention. The CEC, measured by a cell-based ex vivo assay using apolipoprotein B-depleted serum and (3)H-cholesterol labeled macrophages and arylesterase activity (AREA) at the onset or early phase of ACS, and the follow-up periods were compared between 69 patients who completed the five-month outpatient CR program (CR group) and 15 patients who did not participate and/or dropped out from CR program (non-CR group)...
August 30, 2017: Journal of Atherosclerosis and Thrombosis
https://www.readbyqxmd.com/read/28853330/activity-of-the-antioxidant-enzyme-paraoxonase-in-argentinean-children-living-at-high-altitude
#13
V Hirschler, M Martín, K Oestreicher, C Molinari, W Tetzlaff, E Botta, L Boero, F Brites
BACKGROUND: Children living at high altitude in San Antonio de los Cobres (SAC), Argentina, were shown to have lower high-density lipoprotein cholesterol (HDL-C) levels than Buenos Aires (BA) children. HDL antioxidant capacity is mainly attributed to paraoxonase1 (PON1). OBJECTIVE: To compare PON1 activity in indigenous SAC vs. BA children. METHODS: A cross-sectional study compared 158 SAC vs. 97 BA children (6-16 years). Anthropometric data and lipoprotein profile were measured...
August 30, 2017: Redox Report: Communications in Free Radical Research
https://www.readbyqxmd.com/read/28821001/influence-on-serum-asymmetric-dimethylarginine-adma-concentrations-of-human-paraoxonase-1-polymorphism-q192r-and-exposure-to-polycyclic-aromatic-hydrocarbons-pahs-in-mexican-women-a-gene-environment-interaction
#14
Ángeles C Ochoa-Martínez, Tania Ruíz-Vera, Claudia I Almendarez-Reyna, Sandra T Orta-García, Iván N Pérez-Maldonado
It has been demonstrated that Cardiovascular Diseases (CVD) are a consequence of the combination of genetic and environmental factors and/or the interaction between them. Therefore, the aim of this study was to evaluate the impact of polycyclic aromatic hydrocarbon (PAHs) exposure and PON1 Q192R polymorphism (genetic susceptibility) on serum asymmetric dimethylarginine (ADMA) levels in Mexican women (n = 206). Urinary 1-hydroxypyrene concentrations (1-OHP; exposure biomarker for PAHs) were quantified using a high-performance liquid chromatography technique, PON1 Q192R polymorphism was genotyped using TaqMan probes and serum ADMA concentrations were evaluated using a commercially available ELISA kit...
November 2017: Chemosphere
https://www.readbyqxmd.com/read/28808839/individuals-with-autism-have-higher-8-iso-pgf2%C3%AE-levels-than-controls-but-no-correlation-with-quantitative-assay-of-paraoxonase-1-serum-levels
#15
Bianca Pop, Alexandru-Ștefan Niculae, Tudor Lucian Pop, Andreea Liana Răchișan
Autism spectrum disorder (ASD) represents a very large set of neurodevelopmental issues with diverse clinical outcomes. Various hypotheses have been put forth for the etiology of autism spectrum disorder, including issues pertaining to oxidative stress. In this study, we conducted measurements of serum 8-Iso-Prostaglanding F2 α (8-iso-PGF2α, which is the results of non-enzimatically mediated polyunsaturated fatty acid oxidation) in a population of individuals with autism and a control group of age and sex matched controls...
August 14, 2017: Metabolic Brain Disease
https://www.readbyqxmd.com/read/28781774/level-of-dietary-energy-and-2-4-thiazolidinedione-alter-molecular-and-systemic-biomarkers-of-inflammation-and-liver-function-in-holstein-cows
#16
Afshin Hosseini, Mustafa Salman, Zheng Zhou, James K Drackley, Erminio Trevisi, Juan J Loor
BACKGROUND: The objective of the study was to evaluate the effect of overfeeding a moderate energy diet and a 2,4-thiazolidinedione (TZD) injection on blood and hepatic tissue biomarkers of lipid metabolism, oxidative stress, and inflammation as it relates to insulin sensitivity. RESULTS: Fourteen dry non-pregnant cows were fed a control (CON) diet to meet 100% of NRC requirements for 3 wk, after which half of the cows were assigned to a moderate-energy diet (OVE) and half of the cows continued on CON for 6 wk...
2017: Journal of Animal Science and Biotechnology
https://www.readbyqxmd.com/read/28779954/paraoxonase-1-pon1-and-stroke-the-dilemma-of-genetic-variation
#17
REVIEW
Amir Tajbakhsh, Mehdi Rezaee, Mahdi Rivandi, Faranak Forouzanfar, Fahimeh Afzaljavan, Alireza Pasdar
Ischaemic stroke, which is mostly caused by atherosclerosis, is one of the most widely causes of mortality and morbidity. One of the most important enzymatic activities of paraoxonase-1 (PON1) in association with high-density lipoprotein (HDL) is the prevention of low-density lipoprotein (LDL) oxidation, which gives it an anti-atherogenic activity. PON1 expression and activity is influenced by various factors; the most important of which is genetic polymorphism, mainly single nucleotide polymorphisms (SNPs)...
August 3, 2017: Clinical Biochemistry
https://www.readbyqxmd.com/read/28774887/suppressed-hepatic-bile-acid-signalling-despite-elevated-production-of-primary-and-secondary-bile-acids-in-nafld
#18
Na Jiao, Susan S Baker, Adrian Chapa-Rodriguez, Wensheng Liu, Colleen A Nugent, Maria Tsompana, Lucy Mastrandrea, Michael J Buck, Robert D Baker, Robert J Genco, Ruixin Zhu, Lixin Zhu
OBJECTIVE: Bile acids are regulators of lipid and glucose metabolism, and modulate inflammation in the liver and other tissues. Primary bile acids such as cholic acid and chenodeoxycholic acid (CDCA) are produced in the liver, and converted into secondary bile acids such as deoxycholic acid (DCA) and lithocholic acid by gut microbiota. Here we investigated the possible roles of bile acids in non-alcoholic fatty liver disease (NAFLD) pathogenesis and the impact of the gut microbiome on bile acid signalling in NAFLD...
August 3, 2017: Gut
https://www.readbyqxmd.com/read/28760411/polymorphisms-of-mthfr-enos-ace-agt-apoe-pon1-pde4d-and-ischemic-stroke-meta-analysis
#19
Loo Keat Wei, Anthony Au, Saras Menon, Lyn R Griffiths, Cheah Wee Kooi, Looi Irene, Jiangyang Zhao, Chaeyoung Lee, Avdonina Maria Alekseevna, Muhammad Radzi Abdul Hassan, Zariah Abdul Aziz
INTRODUCTION: The association between ischemic stroke and genetic polymorphisms of methylenetetrahydrofolate reductase (MTHFR; 677C>T and 1298A>C), endothelial nitric oxide synthase (eNOS; -786T>C, +894G>T, and variable number tandem repeat [VNTR]), phosphodiesterase 4D (PDE4D; SNPs 83 and 87), angiotensin-converting enzyme (ACE) I/D, angiotensinogen (AGT) 235M>T, paraoxonase 1 (PON1) 192Q>R, and apolipoprotein E (ApoE) ε2ε3ε4 remains inconclusive. Therefore, this updated meta-analysis aimed to clarify the presumed influence of genetic polymorphisms on ischemic stroke by meta-analyzing the comprehensive coverage of all individual association studies...
July 28, 2017: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/28759172/assessment-of-oxidative-stress-markers-in-cord-blood-of-newborns-to-patients-with-oxytocin-induced-labor
#20
Talip Karaçor, Sibel Sak, Serdar Başaranoğlu, Nurullah Peker, Elif Ağaçayak, Muhammet Erdal Sak, Abdulkadir Turgut, Mehmet Sıddık Evsen, Osman Evliyaoğlu, Talip Gül
AIM: We aimed to measure the extent of oxidative stress experienced during labor by the neonates of pregnant women undergoing induced or spontaneous birth and to compare the effects of induced labor on fetal well-being. METHODS: Sixty-four healthy pregnant women referring to the Department of Gynecology and Obstetrics, Dicle University Medical Faculty between October 2010 and May 2011 were included in this comparative study. Pregnant women undergoing induced labor by oxytocin were group 1 and those without labor induction were group 2...
May 2017: Journal of Obstetrics and Gynaecology Research
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