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https://www.readbyqxmd.com/read/29778552/alterations-in-oxidative-stress-markers-in-laryngeal-carcinoma-patients
#1
Nazim Bozan, Halit Demir, Tülay Gürsoy, Hüseyin Özkan, Ufuk Düzenli, Eren Sarıkaya, Mahfuz Turan, Ahmet Faruk Kiroglu, Hakan Çankaya
BACKGROUND: Data describing how laryngeal cancer affects oxidative stress markers and antioxidants are limited. This study investigated serum antioxidant enzyme activities and oxidative stress markers before and after laryngectomies in patients with laryngeal cancer. METHODS: A total of 29 patients with laryngeal cancer and 25 healthy control subjects were enrolled. Serum malondialdehyde (MDA) levels and superoxide dismutase (SOD), glutathione peroxidase (GSHPx), catalase (CAT), paraoxonase (PON), and arylesterase activities were measured spectrophotometrically...
May 16, 2018: Journal of the Chinese Medical Association: JCMA
https://www.readbyqxmd.com/read/29773067/in-silico-molecular-docking-and-adme-studies-of-1-3-4-thiadiazole-derivatives-in-relation-to-in-vitro-pon1-activity
#2
Belgin Sever, Kaan Kucukoglu, Hayrunnisa Nadaroglu, Mehlika Dilek Altintop
BACKGROUND: Paraoxonase 1 (PON1) is a paraoxonase, arylesterase and lactonase associated with protection of lipoproteins and cell membranes against oxidative modification. OBJECTIVE: Based on antioxidative properties of PON1 and widely usage of 1,3,4-thiadiazole derivatives in pharmaceutical, agricultural, and materials chemistry, herein we aimed to evaluate PON1 activator potentials of 1,3,4-thiadiazole based compounds. METHOD: 2-[[5-(2,4-Difluoro/dichlorophenylamino)-1,3,4-thiadiazol-2-yl]thio] acetophenone derivatives (1-18), previously synthesized by our research group, were in vitro evaluated for their activator effects on PON1 which was purified using ammonium sulfate precipitation (60-80%) and DEAE-Sephadex anion exchange chromatography...
May 17, 2018: Current Computer-aided Drug Design
https://www.readbyqxmd.com/read/29732027/paraoxonase-activity-in-metabolic-syndrome-in-children-and-adolescents
#3
Arati Adhe-Rojekar, Mukund Ramchandra Mogarekar, Mohit Vijay Rojekar
Background: Metabolic syndrome (MetS) is a collection of various interrelated risk factors that appear to have an impact as development of atherosclerotic cardiovascular disease (CVDs). Epidemic of childhood and adolescent's obesity has increased interest in the metabolic syndrome (MS) due to the potential projection into adulthood. The prevalence of MS in adolescents has been estimated to be 6.7% in young adults and 4.2% in adolescents. We aimed to study the MetS in children and adolescents with respect to metabolic changes...
2018: Caspian Journal of Internal Medicine
https://www.readbyqxmd.com/read/29604466/pon1-promoter-polymorphisms-contribute-to-pcos-susceptibility-and-phenotypic-outcomes-in-indian-women
#4
Roshan Dadachanji, Nuzhat Shaikh, Anushree Patil, Nalini Shah, Srabani Mukherjee
Polycystic ovary syndrome is a common endocrinopathy characterized by anovulatory infertility, hyperandrogenism, insulin resistance and oxidative stress, which predisposes affected women to reproductive and cardiometabolic complications in later life. We have investigated the association of PON1 promoter polymorphisms with PCOS susceptibility, PON1 activity and its related traits in Indian women. The genotypic and allelic frequency distribution of only -907G/C polymorphism in PON1 promoter showed significant difference between non-hyperandrogenic control and PCOS women, and was significantly associated with reduced susceptibility to PCOS, considering the recessive model...
March 28, 2018: Gene
https://www.readbyqxmd.com/read/29569857/hdl-associated-paraoxonase-1-activity-correlates-with-systemic-inflammation-disease-activity-and-cardiovascular-risk-factors-in-psoriatic-disease
#5
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/29556488/lipid-associated-antioxidants-arylesterase-and-paraoxonase-1-in-benign-prostatic-hyperplasia-treatment-na%C3%A3-ve-patients
#6
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/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
#7
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...
2017: Journal of Nutrigenetics and Nutrigenomics
https://www.readbyqxmd.com/read/29411531/aspirin-and-clopidogrel-high-on-treatment-platelet-reactivity-and-genetic-predictors-in-peripheral-arterial-disease
#8
Khung-Keong Yeo, Ehrin J Armstrong, Javier E López, Debbie C Chen, Gregory G Westin, Chin-Shang Li, David Anderson, Amy Hua, Anil Singapuri, Ezra A Amsterdam, Nipavan Chiamvimonvat, John R Laird
OBJECTIVES: Our aims were to examine the prevalence and genetic predictors of aspirin and clopidogrel high on-treatment platelet reactivity (HoTPR), and associated adverse cardiovascular outcomes in patients with peripheral arterial disease (PAD). BACKGROUND: The association of aspirin and clopidogrel HoTPR with outcomes in PAD remains unclear. METHODS: This is a prospective cohort study of patients with angiographically documented PAD involving carotid and lower extremity arteries...
February 7, 2018: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/29397664/genotype-phenotype-analysis-of-paraoxonase-1-in-schizophrenic-patients-treated-with-atypical-antipsychotics
#9
Denis Pavăl, Bogdan Nemeș, Răzvan L Rusu, Eleonora Dronca
Objective: Recent studies suggest a possible involvement of low paraoxonase 1 (PON1) enzyme activities in the association between schizophrenia, treatment with atypical antipsychotics and increased cardiovascular (CVD) risk. In the present study, we aimed at investigating the PON1 status in a group of schizophrenic patients treated with either olanzapine or other antipsychotic, as compared to a group of healthy control participants. Methods: We assessed the arylesterase (AREase) and paraoxonase (POase) activities of PON1, as well as three common polymorphisms of PON1 gene (Q192R, L55M, -108C>T)...
February 28, 2018: Clinical Psychopharmacology and Neuroscience: the Official Scientific Journal of the Korean College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29393817/relationship-between-paraoxonase-1-and-butyrylcholinesterase-activities-and-nutritional-status-in-mexican-children
#10
Rocío Ramírez-Jiménez, María Fernanda Martínez-Salazar, Damianys Almenares-López, Leticia Yáñez-Estrada, Antonio Monroy-Noyola
BACKGROUND: The enzymes butyrylcholinesterase (BuChE) and paraoxonase-1 (PON1) are the primary bioscavenging enzymes in serum and exhibit antioxidant and anti-inflammatory activities. PON1 has been associated with diseases caused by high oxidative stress, whereas BuChE appears to be involved in the pathophysiology of the metabolic syndrome and related disorders. It has been suggested that children from rural communities in Mexico may have a predisposition to develop obesity or type 2 diabetes during adolescence or adulthood...
March 2018: Metabolic Syndrome and related Disorders
https://www.readbyqxmd.com/read/29313753/compared-to-an-oatmeal-breakfast-two-eggs-day-increased-plasma-carotenoids-and-choline-without-increasing-trimethyl-amine-n-oxide-concentrations
#11
Amanda Missimer, Maria Luz Fernandez, Diana M DiMarco, Gregory H Norris, Christopher N Blesso, Ana Gabriela Murillo, Marcela Vergara-Jimenez, Bruno S Lemos, Isabel Medina-Vera, Olga V Malysheva, Marie A Caudill
BACKGROUND: Habitual consumption of eggs has been hypothesized to positively modify biomarkers of cardiovascular disease risk through proposed antioxidant properties. OBJECTIVES: To examine this relationship, 50 young, healthy men and women were enrolled into a randomized crossover clinical intervention. METHODS: Participants consumed either 2 eggs per day or one packet of oatmeal a day for 4 weeks, followed by a 3-week wash-out and crossed over to the alternate breakfast...
February 2018: Journal of the American College of Nutrition
https://www.readbyqxmd.com/read/29306821/the-effect-of-divalent-metal-chelators-and-cadmium-on-serum-phosphotriesterase-lactonase-and-arylesterase-activities-of-paraoxonase-1
#12
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...
March 2018: Environmental Toxicology and Pharmacology
https://www.readbyqxmd.com/read/29276007/association-between-antioxidants-and-mild-acute-pancreatitis
#13
Tevfik Solakoglu, Huseyin Koseoglu, Semra Isikoglu, Ozcan Erel, Osman Ersoy
BACKGROUND AND STUDY AIMS: The mechanisms underlying acute pancreatitis have not been well elucidated. Over the last 20 years, there has been increasing awareness regarding the role played by oxidative stress in acute pancreatitis, but it is less well defined in human clinical trials. The aim of this study was to identify the relationship between antioxidants and acute pancreatitis. PATIENTS AND METHODS: We performed a cross-sectional trial on patients with mild acute pancreatitis...
December 2017: Arab Journal of Gastroenterology: the Official Publication of the Pan-Arab Association of Gastroenterology
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
#14
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/29243228/mitochondria-and-redox-balance-in-coeliac-disease-a-case-control-study
#15
Anna Picca, Giuseppe Riezzo, Angela M S Lezza, Caterina Clemente, Vito Pesce, Antonella Orlando, Guglielmina Chimienti, Francesco Russo
BACKGROUND: Coeliac disease (CD) is a gluten-sensitive autoimmune disorder. Gluten toxicity encompasses a wide spectrum of target organ functions and pathologies, including the activation of the immune response and triggering of oxidative stress. The aim of this study was to investigate inflammation and the redox balance in patients with active CD, and to evaluate whether alteration of mitochondrial function is involved in the disease status. DESIGN: In this prospective case-control study, blood samples from sixteen adult CD patients and sixteen healthy controls (HC) were investigated for IL-1β, IL-6 and IL-8 plasma concentrations, for serum PON1 arylesterase, total and MnSOD antioxidant enzyme activities, induced TBARs levels, and for lymphocyte mtDNA content...
February 2018: European Journal of Clinical Investigation
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/29185364/the-effect-of-oxidative-stress-on-the-progression-of-hashimoto-s-thyroiditis
#17
Ihsan Ates, Mehmet Fettah Arikan, Mustafa Altay, Fatma Meric Yilmaz, Nisbet Yilmaz, Dilek Berker, Serdar Guler
OBJECTIVE: We aimed to investigate the effects of oxidative stress in the pathogenesis and progression of Hashimoto's thyroiditis (HT). METHODS: Forty euthyroid and 40 subclinical hypothyroid patients older than 18 years and not yet had received treatment were enrolled in the study. RESULTS: In the 9 months follow-up, 14 of the HT patients developed overt hypothyroidism. The mean total oxidant status (TOS) and oxidative stress index (OSI) were higher in patients who developed overt hypothyroidism than those who did not (p < ...
November 29, 2017: Archives of Physiology and Biochemistry
https://www.readbyqxmd.com/read/29171874/serum-paraoxonase-1-activity-is-inversely-related-to-free-thyroxine-in-euthyroid-subjects-the-prevend-cohort-study
#18
Lynnda J N van Tienhoven-Wind, Eke G Gruppen, Richard W James, Stephan J L Bakker, Rijk O B Gans, Robin P F Dullaart
BACKGROUND: Low-normal thyroid function within the euthyroid range has been suggested to enhance atherosclerosis susceptibility. Paraoxonase-1 (PON-1) may protect against atherosclerotic cardiovascular disease development by attenuating oxidative stress. We evaluated relationships of PON-1 with thyroid stimulating hormone (TSH), free T4 , free T3 , lipids and apolipoprotein (apo)A-I in euthyroid subjects, and assessed whether such relationships are modified in the context of the metabolic syndrome (MetS)...
January 2018: European Journal of Clinical Investigation
https://www.readbyqxmd.com/read/29171559/prognostic-importance-of-paraoxonase-arylesterase-and-mean-platelet-volume-efficiency-in-acute-ischaemic-stroke
#19
Mehmet Tahir Gokdemir, Ali Ziya Karakilcik, Gul Sahika Gokdemir
OBJECTIVE: To study the prognostic importance activity of paraoxonase and arylesterase, and the value of mean platelet volume in patients with acute ischaemic stroke. METHODS: This case-control study was conducted at Harran University Hospital, Sanliurfa, Turkey, from January to June 2014, and comprised patients with symptoms of acute ischaemic stroke who presented to the emergency department. Paraoxonase activity, expressed in units per litre, or U/L, of serum, was evaluated in the absence of basal activity, and arylesterase activity was defined as micromoles, of phenol generated/min, and was expressed as U/L of serum...
November 2017: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/29168398/paraoxonase-arylesterase-and-lactonase-activities-of-paraoxonase-1-pon1-in-obese-and-severely-obese-women
#20
Carlo Cervellati, Gloria Bonaccorsi, Alessandro Trentini, Giuseppe Valacchi, Juana M Sanz, Monica Squerzanti, Manuela Spagnolo, Leo Massari, Ilaria Crivellari, Pantaleo Greco, Roberta Parladori, Angelina Passaro, Giorgio Ricci
Obesity is independently associated with disturbances in lipid and lipoprotein metabolism, oxidative stress, and is a well-established independent risk factor for cardiovascular diseases (CVD). Human paraoxonase 1 (PON1) is a pleotropic high-density lipoprotein (HDL)-associated enzyme with antioxidant and anti-inflammatory proprieties that have been suggested to contribute to the athero-protective function of the lipoprotein. The aim of this study was to investigate whether obesity is associated with PON1 activity and whether this association is influenced by oxidative stress, inflammation and HDL cholesterol (HDL-C) concentration...
February 2018: Scandinavian Journal of Clinical and Laboratory Investigation
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