Research Article

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05/10/2011
Oxidative stress; Polymorphism; Sickle cell anemia; Superoxide dismutase

Oxidative stress may be contributory to the pathophy­siology of the abnormalities that underlie the clinical course of sickle cell anemia. We looked for a possible genetic association between the functional polymorphism Ala-9Val in the human Mn-SOD gene and sickle cell anemia. One hundred and twenty-seven patients with sickle cell anemia and 127 healthy controls were recruited into the ... more

S. Sogut; Z. Yonden; H. Kaya; S. Oktar; M. Tutanc; H.R. Yilmaz; A. Yigit; N. Ozcelik; E. Gali
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DNA damage; DNA repair; Drug metabolism; Escherichia coli mutagenesis; Oxidative stress; Yeast

The sensitivity responses of seven pso mutants of Saccharomyces cerevisiae towards the mutagens N-nitrosodiethylamine (NDEA), 1,2:7,8-diepoxyoctane (DEO), and 8-hydroxyquinoline (8HQ) further substantiated their allocation into two distinct groups: genes PSO1 (allelic to REV3), PSO2 (SNM1), PSO4 (PRP19), and PSO5 ... more

C. Pungartnik; J. Picada; M. Brendel; J.A.P. Henriques
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Ala16Val polymorphism; APOE gene polymorphism; Atherosclerosis; MnSOD gene polymorphism; ox-LDL; Oxidative damage; Oxidative stress

Oxidized LDL (ox-LDL) is involved in the initiation and progression of atherosclerosis. Many factors can affect the LDL oxidation such as oxidative stress. The present study tested whether ox-LDL levels would be associated with apolipoprotein E (APOE), manganese superoxide dismutase (MnSOD) Ala16Val polymorphisms, and classic cardiovascular risk factors. ox-LDL levels were measured by ... more

M.G.V. Gottlieb; C.H.A. Schwanke; A.F.R. Santos; P.F. Jobim; I.B.M. da Cruz; D.P. Müssel
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Antioxidant; Expressed sequence tags; Free radicals; Oxidative stress; Paracoccidioides brasiliensis; Transcription factors

Survival of pathogenic fungi inside human hosts depends on evasion from the host immune system and adaptation to the host environment. Among different insults that Paracoccidioides brasiliensis has to handle are reactive oxygen and nitrogen species produced by the human host cells, and by its own metabolism. Knowing how the parasite deals with reactive species is important to ... more

É.G. Campos; Ada Silva Dantas; Mde Macedo Brigido; Mde Macedo Brigido; M.Sueli S. Felipe; R.Santos Amo Jesuino
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G6PD deficiency; Oxidative stress; TBARS; TEAC

Glucose-6-phosphate dehydrogenase (G6PD) deficiency is an enzymopathy in which reduced NADPH concentrations are not maintained, resulting in oxidative damage. We evaluated G6PD activity, oxidative stress levels and Trolox equivalent antioxidant capacity in individuals with the A-(202G>A) mutation for G6PD deficiency. Five hundred and forty-four peripheral blood samples were screened ... more

L.S. Ondei; L.M. Silveira; A.A. Leite; D.R.S. Souza; M.A.S. Pinhel; S. Percário; R. Júnior; C.R. Bonini-Domingos
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Acidification kinetics; Lactococcus lactis; Oxidative stress; Spontaneous mutants

Previously, we isolated two strains of spontaneous oxidative (SpOx2 and SpOx3) stress mutants of Lactococcus lactis subsp cremoris. Herein, we compared these mutants to a parental wild-type strain (J60011) and a commercial starter in experimental fermented milk production. Total solid contents of milk and fermen­tation temperature both affected the acidification profile ... more

M.N. Oliveira; K.E. Almeida; M.R. Damin; T. Rochat; J.J. Gratadoux; A. Miyoshi; P. Langella; V. Azevedo
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hOGG1; Oxidative stress; Polymorphisms; XPD

Knee replacement surgery is an ischemia/reperfusion model, as it uses tourniquet applied to the knee area to stop the blood flow during the operation. Fifty patients that were undergoing elective arthroscopic knee surgery were included in our study. Human 8-oxoguanine glycosylase 1 (hOGG1) is an enzyme to repair specific DNA lesions and a good marker of hydroxyl radical damage to DNA. XPD ... more

O. İsbir; U. Gormus; H.A. Ergen; B. Cakmakoglu; Ö.T. Kahraman; N. Baykan
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Antioxidant; Lipid metabolism genes; Oxidative stress; Thai black sticky rice

Anthocyanins, which are found in some food, including Thai black sticky rice, are reported to have health-promoting properties. Oxidative stress plays a major role in the pathogenesis of many degenerative diseases induced by free radicals, such as cardiovascular disease, stroke and cancer. We evaluated the anthocyanin-rich extract (ARE) from Thai black sticky rice for antioxidative and ... more

W. Sangkitikomol; T. Tencomnao; A. Rocejanasaroj
06/13/2013
Mitochondrial plasmid; Moniliophthora perniciosa; Oxidative stress; Polymerases

Moniliophthora perniciosa (Stahel) Aime and Phillips-Mora is a hemibiotrophic basidiomycete (Agaricales, Tricholomataceae) that causes witches’ broom disease in cocoa (Theobroma cacao L.). This pathogen carries a stable integrated invertron-type linear plasmid in its mi­tochondrial genome that encodes viral-like DNA and RNA polymerases re­lated to fungal senescence and ... more

B.S. Andrade; C. Villela-Dias; D.S. Gomes; F. Micheli; A. Góes-Neto

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