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paraoxonase 1

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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
#1
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
#2
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-the-genetic-variation
#3
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 2, 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
#4
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
#5
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
#6
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
https://www.readbyqxmd.com/read/28757113/cardiovascular-risk-and-the-effect-of-nitric-oxide-synthase-inhibition-in-female-rats-the-role-of-estrogen
#7
Jaqueline C Castardo-de-Paula, Blenda H de Campos, Eric D T Amorim, Rosiane V da Silva, Carine C de Farias, Luciana Higachi, Phileno Pinge-Filho, Décio S Barbosa, Marli C Martins-Pinge
It is known that autonomic modulation is responsive to ovarian hormone levels and that estrogen increases nitric oxide (NO) bioavailability. However, little is known about the interaction of nitric oxide synthase (NOS) isoforms with autonomic modulation, oxidative stress and cardiovascular risk in females. This study aimed to investigate cardiovascular, autonomic and oxidative parameters after selective NOS inhibition. A spectral analysis of systolic arterial pressure (SAP) and heart rate variability (HRV) was performed...
July 28, 2017: Experimental Gerontology
https://www.readbyqxmd.com/read/28751001/effect-of-tofacitinib-on-lipid-levels-and-lipid-related-parameters-in-patients-with-moderate-to-severe-psoriasis
#8
Robert Wolk, Ehrin J Armstrong, Peter R Hansen, Bruce Thiers, Shuping Lan, Anna M Tallman, Mandeep Kaur, Svitlana Tatulych
BACKGROUND: Psoriasis is a systemic inflammatory disease associated with increased cardiovascular (CV) risk and altered lipid metabolism. Tofacitinib is an oral Janus kinase inhibitor. OBJECTIVE: The aim of the study was to investigate the effects of tofacitinib on traditional and nontraditional lipid parameters and CV risk markers in patients with psoriasis from a phase III study, OPT Pivotal 1. METHODS: Patients with psoriasis were randomized to tofacitinib 5 or 10 mg twice daily (BID) or placebo BID...
June 24, 2017: Journal of Clinical Lipidology
https://www.readbyqxmd.com/read/28746818/the-role-of-paraoxonase-1-in-regulating-hdl-functionality-during-aging
#9
Abdelouahed Khalil, Olivier Kamtchueng Simo, Souade Ikhlef, Hicham Berrougui
Pharmacological interventions to increase HDL concentrations have led to disappointing results and have contributed to the emergence of the concept of HDL functionality. The anti-atherogenic activity of HDL can be explained by their functionality or quality. The capacity of HDL to maintain cellular cholesterol homeostasis and to transport cholesterol from peripheral cells to the liver for elimination is one of their principal anti-atherogenic activities. However, HDL possess several other attributes that contribute to their protective effect against cardiovascular diseases...
July 26, 2017: Canadian Journal of Physiology and Pharmacology
https://www.readbyqxmd.com/read/28742600/cholesterol-reduction-and-macrophage-function-role-of-paraoxonases
#10
C Roger White, G M Anantharamaiah
PURPOSE OF REVIEW: Unregulated uptake of oxidized LDL by macrophages to form foam cells is the hallmark for atherosclerosis. The paraoxonase (PON) family of enzymes plays a critical role in attenuating atherosclerotic lesion formation by hydrolyzing lipid peroxides (LOOHs) and preventing the oxidation of LDL particles and by enhancing HDL-mediated cholesterol efflux. Findings in recent years suggest novel mechanisms by which PON isoforms interact with macrophages to regulate cholesterol metabolism and cellular function...
July 22, 2017: Current Opinion in Lipidology
https://www.readbyqxmd.com/read/28732570/incident-type-2-diabetes-is-associated-with-hdl-but-not-with-its-anti-oxidant-constituent-paraoxonase-1-the-prospective-cohort-prevend-study
#11
Setor K Kunutsor, Lyanne M Kieneker, Stephan J L Bakker, Richard W James, Robin P F Dullaart
OBJECTIVE: High-density lipoprotein cholesterol (HDL-C) is an established risk marker for cardiovascular disease and consistently associated with type 2 diabetes risk. Serum paraoxonase-1 (PON-1) - an anti-oxidant constituent of HDL - is inversely associated with cardiovascular disease risk, but its relationship with incident type 2 diabetes is uncertain. We aimed to investigate the prospective association between PON-1 and type 2 diabetes risk. METHODS: PON-1 was measured as its arylesterase activity at baseline in the Prevention of Renal and Vascular End-stage Disease (PREVEND) prospective study of 5947 predominantly Caucasian participants aged 28-75years with no pre-existing diabetes, that recorded 500 type 2 diabetes cases during a median follow-up of 11...
August 2017: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/28723944/application-of-mass-spectrometry-to-elucidate-the-pathophysiology-of-encephalitozoon-cuniculi-infection-in-rabbits
#12
Guillaume Desoubeaux, Maria Del Carmen Piqueras, Ana Pantin, Sanjoy K Bhattacharya, Roman Peschke, Anja Joachim, Carolyn Cray
Encephalitozoon cuniculi is a microsporidian species which can induce subclinical to serious disease in mammals including rabbits, a definitive natural host. The pathophysiology of infection has not been comprehensively elucidated. In this exploratory study, we utilized two mass spectrometry approaches: first, the analysis of the humoral response by profiling the microsporidian antigens as revealed by Western blot screening, and second, implementing the iTRAQ®-labeling protocol to focus on the changes within the host proteome during infection...
2017: PloS One
https://www.readbyqxmd.com/read/28719808/activated-neuro-oxidative-and-neuro-nitrosative-pathways-at-the-end-of-term-are-associated-with-inflammation-and-physio-somatic-and-depression-symptoms-while-predicting-outcome-characteristics-in-mother-and-baby
#13
Chutima Roomruangwong, Decio Sabbatini Barbosa, Andressa Keiko Matsumoto, André de Souza Nogueira, Buranee Kanchanatawan, Sunee Sirivichayakul, André F Carvalho, Sebastien Duleu, Michel Geffard, Estefania Gastaldello Moreira, Michael Maes
OBJECTIVES: To examine oxidative & nitrosative stress (O&NS) biomarkers at the end of term in relation to perinatal affective symptoms, neuro-immune biomarkers and pregnancy-related outcome variables. METHODS: We measured plasma advanced oxidation protein products (AOPP), nitric oxide metabolites (NOx), total radical trapping antioxidant parameter (TRAP), -sulfhydryl (-SH), peroxides (LOOH) and paraoxonase (PON)1 activity in pregnant women with and without prenatal depression and non-pregnant controls...
July 6, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/28691312/paraoxonase-1-pon1-activity-in-serum-follicular-fluid-and-seminal-plasma-of-sheep
#14
J Pradieé, F T de Campos, Jaa Rincon, L Collares, K Goularte, Pas Silveira, Lmc Pegoraro, A Schneider
This work aimed to describe the activity of paraoxonase 1 (PON1) in serum, follicular fluid and seminal plasma of sheep. Average serum PON1 activity was 286.8 ± 96.2 U/ml in females and 237.6 ± 18.9 U/ml in males. There was a positive correlation between PON1 activity in serum and follicular fluid in females, being twice higher in serum than in follicular fluid (148.8 ± 15.7 U/ml). PON1 activity in males' serum was 10-fold higher than in seminal plasma (21.18 ± 14.2 U/ml), and there was no correlation between PON1 activity in both compartments...
July 9, 2017: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/28688923/paraoxonase-activities-in-human-follicular-fluid-role-in-follicular-maturation
#15
Susana Meijide, Irantzu Pérez-Ruiz, M Luisa Hernández, Rosaura Navarro, Marcos Ferrando, Zaloa Larreategui, José-Ignacio Ruiz-Sanz, M Begoña Ruiz-Larrea
The paraoxonases (PONs) are antioxidant enzymes associated with beneficial effects against several diseases and some exposures. Little is known, however, about the role of PONs in human reproduction. This work was conducted to investigate whether any association existed between the activities of the PON enzymes (1, 2, and 3) with the follicular size and fertility parameters in assisted reproduction. The study included 100 subfertile women (patients) and 55 proven fertile women (oocyte donors), all undergoing an ovarian stimulation cycle...
June 22, 2017: Reproductive Biomedicine Online
https://www.readbyqxmd.com/read/28667918/the-inverse-association-of-hdl-cholesterol-with-future-risk-of-hypertension-is-not-modified-by-its-antioxidant-constituent-paraoxonase-1-the-prevend-prospective-cohort-study
#16
Setor K Kunutsor, Lyanne M Kieneker, Stephan J L Bakker, Richard W James, Robin P F Dullaart
BACKGROUND AND AIMS: High-density lipoprotein cholesterol (HDL-C), an established risk marker for atherosclerotic cardiovascular disease (CVD), has been shown to be inversely and independently associated with incident hypertension. Paraoxonase-1 (PON-1) is an HDL-bound esterase enzyme associated with CVD, but its relationship with incident hypertension has not been previously investigated. We aimed at evaluating the prospective association between PON-1 and hypertension risk. METHODS: PON-1 arylesterase activity was measured in serum at baseline in 3988 participants without pre-existing hypertension in the Prevention of Renal and Vascular End-stage Disease (PREVEND) prospective population-based study...
June 21, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/28665493/assessment-of-the-inhibitory-effects-and-molecular-docking-of-some-sulfonamides-on-human-serum-paraoxonase-1
#17
Zuhal Alim, Deryanur Kilic, Zeynep Koksal, Sukru Beydemir, Hasan Ozdemir
Paraoxonase-1 (PON1) is an organophosphate hydrolyzer and antiatherogenic enzyme. Due to the PON1's crucial functions, inhibitors and activators of PON1 must be known for pharmacological applications. In this study, we investigated the in vitro effects of some sulfonamides compounds on human serum PON1 (hPON1). For this aim, we purified the hPON1 from human serum with high specific activity by using simple chromatographic methods, and after the purification processes, we investigated in vitro interactions between the enzyme and some sulfonamides (2-amino-5-methyl-1,3-benzenedisulfonamide, 2-chloro-4-sülfamoilaniline, 4-amino-3-methylbenzenesulfanilamide, sulfisoxazole, sulfisomidine, and 5-amino-2-methylbenzenesulfonamide)...
June 30, 2017: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/28662934/high-triglycerides-and-low-high-density-lipoprotein-cholesterol-lipid-profile-in-rheumatoid-arthritis-a-potential-link-among-inflammation-oxidative-status-and-dysfunctional-high-density-lipoprotein
#18
Javier Rodríguez-Carrio, Mercedes Alperi-López, Patricia López, Raquel López-Mejías, Sara Alonso-Castro, Francisco Abal, Francisco J Ballina-García, Miguel Á González-Gay, Ana Suárez
BACKGROUND: The interactions between inflammation and lipid profile in rheumatoid arthritis (RA) are poorly understood. The lipid profile study in RA has been biased toward lipoprotein levels, whereas those of triglycerides (TGs) and lipoprotein functionality have been underestimated. OBJECTIVES: Since recent findings suggest a role for TG and TG-rich lipoproteins (TRL) on inflammation, we aimed to evaluate a combined lipid profile characterized by high TG and low high-density lipoprotein cholesterol levels (TG(high)HDL(low)) in RA...
June 3, 2017: Journal of Clinical Lipidology
https://www.readbyqxmd.com/read/28660014/apolipoprotein-e-a-multifunctional-protein-with-implications-in-various-pathologies-as-a-result-of-its-structural-features
#19
REVIEW
Irina Florina Tudorache, Violeta Georgeta Trusca, Anca Violeta Gafencu
Apolipoprotein E (apoE), a 34 kDa glycoprotein, mediates hepatic and extrahepatic uptake of plasma lipoproteins and cholesterol efflux from lipid-laden macrophages. In humans, three structural different apoE isoforms occur, with subsequent functional changes and pathological consequences. Here, we review data supporting the involvement of apoE structural domains and isoforms in normal and altered lipid metabolism, cardiovascular and neurodegenerative diseases, as well as stress-related pathological states...
2017: Computational and Structural Biotechnology Journal
https://www.readbyqxmd.com/read/28657841/association-between-dementia-and-vascular-disease-associated-polymorphisms-in-a-tunisian-population
#20
Hamdouni Haithem, Achour Ons, Naija Salma, Rejeb Jihène, Aounallah Mariam, Mhiri Mariem, Noureddine Mariem, Ben Rejeb Nabila, Omezzine Asma, Ben Amor Sana, Benammou Sofien, Bouslama Ali
Dementia is a multifactorial idiopathic pathology caused by clinical, environmental and genetic factors. Hence its etiology is still unknown. We aimed to evaluate the association between five genetic risk factors for vascular diseases and dementia individually and when gathered in haplotypes. We enrolled 200 dementia patients and 300 controls. All subjects were genotyped for vascular disease-associated polymorphisms in the genes coding for Apolipoprotein-E (ApoE), Angiotensin Converting Enzyme (ACE) and Paraoxonase-1 (PON1)...
June 28, 2017: International Journal of Neuroscience
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