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paraoxonase 1

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https://www.readbyqxmd.com/read/29353699/near-infrared-heat-lamp-therapeutic-effect-on-paraoxonase-1-and-myeloperoxidase-as-potential-biomarkers-of-redox-state-changes-induced-by-%C3%AE-irradiation-in-albino-rats
#1
N Abdel-Magied, A G Ahmed, S M Shedid
Infrared radiation has a potential therapeutic effect in some diseases. The aim of this study was to estimate the therapeutic role of near infrared heat lamp (NIRHL) on the variations of the activity of paraoxonase 1 (PON1) and myeloperoxidase (MPO), in relation to lipid disorders, associated with oxidative stress in rats gamma-irradiated. In addition, study the effect of the duration of NIRHL treatment. Animals were divided into six groups. The results revealed that irradiated rats treated with NIRHL 20 min/once/day showed positive modulation of PON1 and MPO linked to significant improvement of lipid disorders evidenced by lower triglycerides, low density lipoprotein cholesterol (LDL-C), oxidized low density lipoprotein cholesterol (oxLDL-C) and higher density lipoprotein cholesterol (HDL-C) as well as significant amelioration of redox state, manifested by markedly increase of glutathione (GSH) content, total antioxidant capacity (TAC) associated with a noticeable decrease of pro-inflammatory cytokines...
January 16, 2018: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/29318986/oxidative-status-and-lipid-profile-among-dogs-at-different-stages-of-visceral-leishmaniasis
#2
Mehmet Gültekin, Serdar Paşa, Kerem Ural, Canberk Balıkçı, Gamze Sevri Ekren Aşıcı, Gamze Gültekin
OBJECTIVE: The purpose of the study was to investigate the oxidative status and lipid profile among dogs at different stages of visceral leishmaniasis (VL). METHODS: Dogs with VL were divided into four groups according to the classification reported by the Leishvet group: stage I (n=9), stage II (n=11), stage III (n=6), and stage IV (n=6); these dogs were compared to healthy control dogs (n=14). The lipid profile [high-density lipoprotein (HDL), low-density lipoprotein (LDL), cholesterol, and triglyceride levels) and oxidative status [total antioxidant capacity (TAC), total oxidant status (TOS), and paraoxonase-1 (PON-1) activity] were evaluated...
December 2017: Türkiye Parazitolojii Dergisi
https://www.readbyqxmd.com/read/29317492/a-protein-interaction-network-centered-on-leucine-rich-repeats-and-immunoglobulin-like-domains-1-lrig1-regulates-growth-factor-receptors
#3
Mahmood Faraz, Carl Herdenberg, Camilla Holmlund, Roger Henriksson, Håkan Hedman
Leucine-rich repeats and immunoglobulin-like domains 1 (LRIG1) is a tumor suppressor and a negative regulator of several receptor tyrosine kinases (RTKs). The molecular mechanisms by which LRIG1 mediates its tumor suppressor effects and regulates RTKs remain incompletely understood. Here, we performed a yeast two-hybrid screen to identify novel LRIG1-interacting proteins and mined data from the BioPlex (biophysical interactions of ORFeome-based complexes) protein interaction data repository. The putative LRIG1 interactors identified in the screen were functionally evaluated using a triple co-transfection system in which HEK293 cells were co-transfected with platelet-derived growth factor receptor alpha (PDGFRA), LRIG1, and shRNAs against the identified LRIG1 interactors...
January 9, 2018: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29314660/european-versus-asian-differences-for-the-associations-between-paraoxonase-1-genetic-polymorphisms-and-susceptibility-to-type-2-diabetes-mellitus
#4
Jian-Quan Luo, Huan Ren, Mou-Ze Liu, Ping-Fei Fang, Da-Xiong Xiang
Many studies have examined the associations between paraoxonase-1 (PON1) genetic polymorphisms (Q192R, rs662 and L55M, rs854560) and the susceptibility to type 2 diabetes mellitus (T2DM) across different ethnic populations. However, the evidence for the associations remains inconclusive. In this study, we performed a meta-analysis to clarify the association of the two PON1 variants with T2DM risk. We carried out a systematic search of PubMed, Embase, CNKI and Wanfang databases for studies published before June 2017...
January 4, 2018: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/29306821/the-effect-of-divalent-metal-chelators-and-cadmium-on-serum-phosphotriesterase-lactonase-and-arylesterase-activities-of-paraoxonase-1
#5
Anna Bizoń, Halina Milnerowicz
Paraoxonase 1 (PON1) is calcium dependent enzyme involved in many functions in human body. PON1 is synthesized in the liver and secreted to the bloodstream where bounds high-density lipoproteins (HDL). Association of PON1 with HDL increases the enzyme stability and biological activities. PON1 have three different activities: phosphotriesterase, lactonase and arylesterase. Until now there is now commercial available kits to determine these three PON1 activities. Also there is no date about stability of PON1 in serum after storage condition...
December 27, 2017: Environmental Toxicology and Pharmacology
https://www.readbyqxmd.com/read/29285660/effect-of-blood-phenylalanine-levels-on-oxidative-stress-in-classical-phenylketonuric-patients
#6
Burcu Kumru, Davut Sinan Kaplan, Burcu Oztürk Hismi, Hakim Celik
Mental retardation, which occurs in phenylketonuric patients, is associated with increased levels of phenylalanine, increased oxidative stress, and an imbalance of amino acids in the brain. Recent studies have shown that oxidative stress plays a role in the pathogenesis of phenylketonuria. In this work, we aimed to compare the influence of blood phenylalanine levels on oxidative stress parameters in phenylketonuric patients who divided patients into groups according to blood Phe levels during follow-up visits and compared these groups with healthy controls...
December 28, 2017: Cellular and Molecular Neurobiology
https://www.readbyqxmd.com/read/29273831/synergism-between-apolipoprotein-e-%C3%A6-4-allele-and-paraoxonase-pon1-55-m-allele-is-associated-with-risk-of-systemic-lupus-erythematosus
#7
Maryam Tanhapour, Ali Miri, Asad Vaisi-Raygani, Fariborz Bahrehmand, Amir Kiani, Zohreh Rahimi, Tayebeh Pourmotabbed, Ebrahim Shakiba
Evidences indicate that abnormal lipid metabolism and lipid peroxidation can affect the progression of complications in systemic lupus erythematosus (SLE) patients. Apolipoprotein E (ApoE) and paraoxonase-1 (PON1) play important role in lipid metabolism and protection of lipid peroxidation. The polymorphisms of ApoE and paraoxonase (PON1) L55M (Met < Leu) allele genes lead to disorders in lipid metabolism and are related to atherosclerosis. This study is the first investigation to examine the possible association between ApoE and PON1-L55M polymorphisms and correlation with serum arylesterase (ARE) activities of PON, levels of malondialdehyde (MDA), neopterin, and lipid lipoprotein in SLE patients from Iranian western population...
December 22, 2017: Clinical Rheumatology
https://www.readbyqxmd.com/read/29246729/a-comparison-of-the-effects-of-low-and-high-dose-atorvastatin-on-lipoprotein-metabolism-and-inflammatory-cytokines-in-type-2-diabetes-results-from-the-protection-against-nephropathy-in-diabetes-with-atorvastatin-panda-randomized-trial
#8
Handrean Soran, Yifen Liu, Safwaan Adam, Tarza Siahmansur, Jan H Ho, Jonathan D Schofield, See Kwok, Matthew Gittins, Michael France, Naveed Younis, J Martin Gibson, Paul N Durrington, Martin K Rutter
BACKGROUND: Statin therapy is recommended in type 2 diabetes (T2DM) although views on treatment intensity and therapeutic targets remain divided. OBJECTIVES: Our objectives were to compare the effects of high-intensity and moderate-intensity atorvastatin treatment on lipoprotein metabolism and inflammatory markers and how frequently treatment goals are met in high-risk T2DM patients. METHODS: Patients with T2DM and albuminuria (urinary albumin:creatinine ratio >5 mg/mmol, total cholesterol <7 mmol/L, proteinuria <2 g/d, creatinine <200 μmol/L) were randomized to receive atorvastatin 10 mg (n = 59) or 80 mg (n = 60) daily...
November 13, 2017: Journal of Clinical Lipidology
https://www.readbyqxmd.com/read/29233102/the-gene-treatment-interaction-of-paraoxonase-1-gene-polymorphism-and-statin-therapy-on-insulin-secretion-in-japanese-patients-with-type-2-diabetes-fukuoka-diabetes-registry
#9
Akiko Sumi, Udai Nakamura, Masanori Iwase, Hiroki Fujii, Toshiaki Ohkuma, Hitoshi Ide, Tamaki Jodai-Kitamura, Yuji Komorita, Masahito Yoshinari, Yoichiro Hirakawa, Atsushi Hirano, Michiaki Kubo, Takanari Kitazono
BACKGROUND: Although statins deteriorate glucose metabolism, their glucose-lowering effects have emerged in some situations. Here, we assessed whether these effects are a consequence of statins' interaction with paraoxonase (PON)1 enzyme polymorphism. METHODS: Adult Japanese type 2 diabetes patients (n = 3798) were enrolled in a cross-sectional study. We used Q192R polymorphism of the PON1 gene as a representative single-nucleotide polymorphism and focused on the effects of the wild-type Q allele, in an additive manner...
December 12, 2017: BMC Medical Genetics
https://www.readbyqxmd.com/read/29229890/q192r-polymorphism-in-the-pon1-gene-and-familial-hypercholesterolemia-in-a-saudi-population
#10
Khalid Khalaf Alharbi, May Salem Alnbaheen, Fawiziah Khalaf Alharbi, Rana M Hasanato, Imran Ali Khan
BACKGROUND: Familial hypercholesterolemia (FH) is an autosomal dominant condition characterized by abnormal levels of low-density lipoprotein (LDL) in the blood. FH is a risk factor for atherosclerosis and cardiovascular disease. The relationship between the paraoxonase 1 (PON1) gene, atherosclerosis and coronary artery disease has not been studied in Saudi patients. OBJECTIVE: To investigate the genetic associations of the Q192R polymorphism in the PON1 gene with FH in Saudi patients...
November 2017: Annals of Saudi Medicine
https://www.readbyqxmd.com/read/29226640/association-of-paraoxonase-1-polymorphism-and-serum-25-hydroxyvitamin-d-with-the-risk-of-cardiovascular-disease-in-patients-with-rheumatoid-arthritis
#11
Sawsan O Khoja, Yasser El Miedany, Archana P Iyer, Sami M Bahlas, Khadijah S Balamash, Mohamed F Elshal
BACKGROUND: Patients with rheumatoid arthritis (RA) have significantly increased cardiovascular (CV) morbidity and mortality that are not accounted for by traditional risk factors alone. Paraoxonase 1 (PON1) and 25-hydroxyvitamin D have been shown to be involved in the pathogenesis of CV diseases. Objective: This study aimed to investigate PON1 gene polymorphism and serum 25-hydroxyvitamin D concentrations in RA patients, and to determine their association with CV risk in RA. METHODS: Serum samples from 46 RA patients and 45 healthy controls were tested for PON1 R192Q genotypes and serum vitamin D concentrations...
November 1, 2017: Clinical Laboratory
https://www.readbyqxmd.com/read/29226154/reduced-transferrin-levels-in-active-inflammatory-bowel-disease
#12
Malgorzata Matusiewicz, Katarzyna Neubauer, Paulina Lewandowska, Andrzej Gamian, Malgorzata Krzystek-Korpacka
Inflammatory bowel disease (IBD) is an inflammatory disease of unclear etiopathogenesis and challenging diagnosis, frequently complicated by anemia and malnutrition. C-reactive protein (CRP) remains the only biochemical marker of clinical relevance. The aim of this study was to test hypothesis that transferrin, coinfluenced by inflammation, malnutrition, anemia, and oxidative stress, may better reflect global IBD patient's condition than any other more specific index. Transferrin and other indices of inflammation, anemia, malnutrition, and oxidative stress were measured in 137 IBD patients (Crohn's disease (CD): n = 63 and ulcerative colitis (UC): n = 74) and 97 controls...
2017: BioMed Research International
https://www.readbyqxmd.com/read/29215590/joint-effects-of-pon1-polymorphisms-and-vegetable-intake-on-ischemic-stroke-a-family-based-case-control-study
#13
Juan Juan, Xia Jiang, Xun Tang, Yiqun Wu, Kexin Sun, Xiao Xiang, Yaohua Tian, Tao Wu, Qi Sun, Peter Kraft, Yonghua Hu
Paraoxonase 1 gene (PON1) polymorphisms and dietary vegetable and fruit intake are both established determinants of ischemic stroke (IS). However, little is known about whether these factors jointly influence the risk of IS. We analyzed the main effects of PON1, as well as the interactions between PON1 and dietary vegetable or fruit intake with the risk of total IS and its subtypes in a family-based case-control study conducted among 2158 Chinese participants (1007 IS cases and 1151 IS-free controls) from 918 families...
December 7, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29215336/caffeine-increases-apolipoprotein-a-1-and-paraoxonase-1-but-not-paraoxonase-3-protein-levels-in-human-derived-liver-hepg2-cells
#14
Gülben Sayılan Özgün, Eray Özgün, Kıymet Tabakçıoğlu, Selma Süer Gökmen, Sevgi Eskiocak, Erol Çakır
BACKGROUND: Apolipoprotein A-1, paraoxonase-1 and paraoxonase-3 are antioxidant and anti-atherosclerotic structural high-density lipoprotein proteins that are mainly synthesized by the liver. No study has ever been performed to specifically examine the effects of caffeine on paraoxonase enzymes and on liver apolipoprotein A-1 protein levels. AIMS: To investigate the dose-dependent effects of caffeine on liver apolipoprotein A-1, paraoxonase-1 and paraoxonase-3 protein levels...
December 1, 2017: Balkan Medical Journal
https://www.readbyqxmd.com/read/29204780/silver-oxide-nanoparticles-alleviate-indomethacin-induced-gastric-injury-a-novel-antiulcer-agent
#15
Neveen A Salem, Mohammed A Wahba, Wael H Eisa, Marwa El-Shamarka, Wagdy Khalil
Silver and silver oxides are gaining interest in medical applications for their prominent antibacterial and antimicrobial potentials. Recent studies suggest that nanosilver oxide has remarkable anti-inflammatory effects and enhances wound healing. Nevertheless, its effect on gastric ulcer has not yet been illustrated. Thus the current study aimed to explore the prospect protective effect of nanosilver oxide against indomethacin-induced gastric ulcer. A new approach has been followed to synthesize nanosilver oxide...
December 4, 2017: Inflammopharmacology
https://www.readbyqxmd.com/read/29199478/effect-of-certain-non-steroidal-anti-inflammatory-drugs-on-the-paraoxonase-2-pon2-in-human-monocytic-cell-line-u937
#16
Ayla Solmaz Avcıkurt, Oğuzhan Korkut
The paraoxonase gene family in humans consists of three members as PON1, PON2 and PON3. PON2 can be expressed in several tissues; however, it is not released from the cells in those tissues. PON2 is also expressed in macrophages. Firstly, the commonly used NSAIDs diclofenac sodium and tenoxicam were applied on U937 cell line, the in vitro human monocyte cell line. Than PON2 specific Lactonase activity and paraoxonase family specific arylesterase were determined. Use of Diclofenac sodium in 0.845 mM dose during 6-12 h of incubation and Tenoxicam in 0...
December 3, 2017: Archives of Physiology and Biochemistry
https://www.readbyqxmd.com/read/29189170/paraoxonase-1-characteristics-and-role-in-atherosclerosis-and-carotid-artery-disease
#17
Stella Lioudaki, Christos Verikokos, Grigorios Kouraklis, Christos Ioannou, Efi Chatziioannou, Despoina Perrea, Christos Klonaris
Paraoxonase-1 (PON-1) is a calcium-dependent enzyme that is synthesized in the liver and then secreted in blood where it is bound to high density lipoprotein(HDL). PON-1 is a hydrolase with a wide range of substrates, including lipid peroxides. It is considered responsible for many of the antiatherogenic properties of HDL. PON-1 prevents low density lipoprotein (LDL) oxidation, a process that is considered to contribute to the initiation and development of atherosclerosis. PON-1 activity and levels areinfluenced by gene polymorphisms; of the 2 common variants, one is in position 192 (Q192R) and one in position 55 (M55L)...
November 29, 2017: Current Vascular Pharmacology
https://www.readbyqxmd.com/read/29187850/effect-of-roux-en-y-bariatric-surgery-on-lipoproteins-insulin-resistance-and-systemic-and-vascular-inflammation-in-obesity-and-diabetes
#18
Rahul Yadav, Salam Hama, Yifen Liu, Tarza Siahmansur, Jonathan Schofield, Akheel A Syed, Michael France, Philip Pemberton, Safwaan Adam, Jan Hoong Ho, Reza Aghamohammadzadeh, Shaishav Dhage, Rachelle Donn, Rayaz A Malik, John P New, Maria Jeziorska, Paul Durrington, Basil A Ammori, Handrean Soran
Purpose: Obesity is a major modifiable risk factor for cardiovascular disease. Bariatric surgery is considered to be the most effective treatment option for weight reduction in obese patients with and without type 2 diabetes (T2DM). Objective: To evaluate changes in lipoproteins, insulin resistance, mediators of systemic and vascular inflammation, and endothelial dysfunction following Roux-en-Y bariatric surgery in obese patients with and without diabetes. Materials and methods: Lipoproteins, insulin resistance, mediators of systemic and vascular inflammation, and endothelial dysfunction were measured in 37 obese patients with (n = 17) and without (n = 20) T2DM, before and 6 and 12 months after Roux-en-Y bariatric surgery...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29180002/melatonin-mitigates-thioacetamide-induced-hepatic-fibrosis-via-antioxidant-activity-and-modulation-of-proinflammatory-cytokines-and-fibrogenic-genes
#19
Mohamed A Lebda, Kadry M Sadek, Tarek K Abouzed, Hossam G Tohamy, Yasser S El-Sayed
AIMS: The potential antifibrotic effects of melatonin against induced hepatic fibrosis were explored. MAIN METHODS: Rats were allocated into four groups: placebo; thioacetamide (TAA) (200mg/kg bwt, i.p twice weekly for two months); melatonin (5mg/kgbwt, i.p daily for a week before TAA and continued for an additional two months); and melatonin plus TAA. Hepatic fibrotic changes were evaluated biochemically and histopathologically. Hepatic oxidative/antioxidative indices were assessed...
November 24, 2017: Life Sciences
https://www.readbyqxmd.com/read/29176871/effect-of-radiotherapy-on-activity-and-concentration-of-serum-paraoxonase-1-in-breast-cancer-patients
#20
Meritxell Arenas, Anabel García-Heredia, Noemí Cabré, Fedra Luciano-Mateo, Anna Hernández-Aguilera, Sebastià Sabater, Marta Bonet, Marina Gascón, Salvador Fernández-Arroyo, Isabel Fort-Gallifa, Jordi Camps, Jorge Joven
Paraoxonase-1 (PON1) is an intra-cellular antioxidant enzyme found also in the circulation associated with high-density lipoproteins. The activity of this enzyme has been shown to be decreased in breast cancer (BC) patients. The aims of our study were to investigate the changes produced by radiotherapy (RT) on activity and concentration of serum PON1 in BC patients, and to evaluate the observed variations in relation to clinical and pathological characteristics of patients and tumors, and the response to treatment...
2017: PloS One
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