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Effects of melatonin on DNA damage induced by cyclophosphamide in rats BJMBR
Ferreira,S.G.; Peliciari-Garcia,R.A.; Takahashi-Hyodo,S.A.; Rodrigues,A.C.; Amaral,F.G.; Berra,C.M.; Bordin,S.; Curi,R.; Cipolla-Neto,J..
The antioxidant and free radical scavenger properties of melatonin have been well described in the literature. In this study, our objective was to determine the protective effect of the pineal gland hormone against the DNA damage induced by cyclophosphamide (CP), an anti-tumor agent that is widely applied in clinical practice. DNA damage was induced in rats by a single intraperitoneal injection of CP (20 or 50 mg/kg). Animals received melatonin during the dark period for 15 days (1 mg/kg in the drinking water). Rat bone marrow cells were used for the determination of chromosomal aberrations and of formamidopyrimidine DNA glycosylase enzyme (Fpg)-sensitive sites by the comet technique and ofXpf mRNA expression by qRT-PCR. The number (mean ± SE) of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Melatonin; Cyclophosphamide; Chromosomal aberration; DNA fragmentation; Comet assay; Xpf expression.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000300278
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High baseline serum total and LDL cholesterol levels are associated with MDR1 haplotypes in Brazilian hypercholesterolemic individuals of European descent BJMBR
Rodrigues,A.C.; Rebecchi,I.M.M.; Bertolami,M.C.; Faludi,A.A.; Hirata,M.H.; Hirata,R.D.C..
The MDR1 gene encodes the P-glycoprotein, an efflux transporter with broad substrate specificity. P-glycoprotein has raised great interest in pharmacogenetics because it transports a variety of structurally divergent drugs, including lipid-lowering drugs. The synonymous single-nucleotide polymorphism C3435T and the nonsynonymous single-nucleotide polymorphism G2677T/A in MDR1 have been indicated as potential determinants of variability in drug disposition and efficacy. In order to evaluate the effect of G2677T/A and C3435T MDR1 polymorphisms on serum levels of lipids before and after atorvastatin administration, 69 unrelated hypercholesterolemic individuals from São Paulo city, Brazil, were selected and treated with 10 mg atorvastatin orally once daily for...
Tipo: Info:eu-repo/semantics/article Palavras-chave: MDR1 gene; Hypercholesterolemia; Statins; Single nucleotide polymorphism; Pharmacogenetics.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2005000900014
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Participation of neuronal nitric oxide synthase in experimental neuropathic pain induced by sciatic nerve transection BJMBR
Chacur,M.; Matos,R.J.B.; Alves,A.S.; Rodrigues,A.C.; Gutierrez,V.; Cury,Y.; Britto,L.R.G..
Nerve injury leads to a neuropathic pain state that results from central sensitization. This phenomenom is mediated by NMDA receptors and may involve the production of nitric oxide (NO). In this study, we investigated the expression of the neuronal isoform of NO synthase (nNOS) in the spinal cord of 3-month-old male, Wistar rats after sciatic nerve transection (SNT). Our attention was focused on the dorsal part of L3-L5 segments receiving sensory inputs from the sciatic nerve. SNT resulted in the development of neuropathic pain symptoms confirmed by evaluating mechanical hyperalgesia (Randall and Selitto test) and allodynia (von Frey hair test). Control animals did not present any alteration (sham-animals). The selective inhibitor of nNOS, 7-nitroindazole...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Allodynia; Neuropathic pain; Neuronal nitric oxide synthase; Peripheral neuropathy; Sciatic nerve transection; Spinal cord.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2010000400008
Registros recuperados: 3
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