Methemoglobin
Mostrando 1-12 de 76 artigos, teses e dissertações.
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1. Rattlesnake Crotalus molossus nigrescens venom induces oxidative stress on human erythrocytes
Abstract Background Globally, snake envenomation is a well-known cause of death and morbidity. In many cases of snakebite, myonecrosis, dermonecrosis, hemorrhage and neurotoxicity are present. Some of these symptoms may be provoked by the envenomation itself, but others are secondary effects of the produced oxidative stress that enhances the damage produce
J. Venom. Anim. Toxins incl. Trop. Dis. Publicado em: 06/07/2017
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2. ADAPTAÇÃO DA METODOLOGIA DE ANÁLISE DE METEMOGLOBINA COMO BIOMARCADOR DE EFEITO DA EXPOSIÇÃO AO AGROTÓXICO DIFLUBENZURON
This work aimed to adapt the analysis of methemoglobin recommended by Evelyn - Malloy (visible spectrophotometry), in order to facilitate its application in the field, or to analysis in clinical laboratory, of existing sites of diflubenzuron application. The parameters changed included: centrifuge rotation speed; time between the collection of biological sam
Quím. Nova. Publicado em: 2015-05
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3. De novo alpha 2 hemoglobin gene (HBA2) mutation in a child with hemoglobin M Iwate and symptomatic methemoglobinemia since birth
Cyanosis in an apparently healthy newborn baby may be caused by hemoglobin variants associated with the formation of methemoglobin, collectively known as M hemoglobins. They should not be confused with genetic alterations in methemoglobin reductase enzyme systems of red cells since treatment and prognosis are completely different. A newborn male child was no
Rev. Bras. Hematol. Hemoter.. Publicado em: 2014-06
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4. Antioxidant factors, nitric oxide levels, and cellular damage in leprosy patients
Introduction The immune response caused by Mycobacterium leprae is a risk factor for the development of oxidative stress (OS) in leprosy patients. This study aimed to assess OS in leprosy patients before the use of a multidrug therapy. Methods We evaluated the nitric oxide (NO) concentration; antioxidant capacity; levels of malondialdehyde, methemoglobin
Rev. Soc. Bras. Med. Trop.. Publicado em: 2013-09
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5. Reference values for methemoglobin concentrations in children
OBJECTIVE: The aim of this work was to establish reference values for methemoglobin levels in 6 to 10-year-old children. METHODS: Methemoglobin concentrations were studied in clinically healthy children. The method for methemoglobin measurement used, neither uses highly toxic chemical compounds nor expensive enzymatic methods, thus it is feasible in the labo
Revista Brasileira de Hematologia e Hemoterapia. Publicado em: 2012
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6. Allium species poisoning in dogs and cats
Dogs and cats are the animals that owners most frequently seek assistance for potential poisonings, and these species are frequently involved with toxicoses due to ingestion of poisonous food. Feeding human foodstuff to pets may prove itself dangerous for their health, similarly to what is observed in Allium species toxicosis. Allium species toxicosis is rep
Journal of Venomous Animals and Toxins including Tropical Diseases. Publicado em: 2011
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7. Familial congenital cyanosis caused by Hb-M Yantai (α-76 GAC → TAC, Asp → Tyr)
Methemoglobin (Hb-M) is a rare hemoglobinopathy in China. We hereby report on a family living in Yantai, East China, with congenital cyanosis due to Hb-M mutation. The proband, a 65-year-old female, presented 63% oxygen saturation. Both Hb-M concentration and arterial oxygen saturation remained unchanged, even following intravenous treatment with methylene b
Genetics and Molecular Biology. Publicado em: 25/06/2010
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8. Methemoglobinemia and dapsone levels in patients with leprosy
The objective of this work was to determine the methemoglobinemia and correlate with dapsone levels in multibacillary leprosy patients under leprosy multi-drug therapy. Thirty patients with laboratory and clinical diagnosis of multibacillary leprosy were enrolled. Dapsone was analyzed by high performance liquid chromatography and methemoglobinemia by spectro
Brazilian Journal of Infectious Diseases. Publicado em: 2010-06
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9. Prevalência da deficiência da glicose-6-fosfato desidrogenase em doadores de sangue de Mossoró, Rio Grande do Norte
Glucose-6-phosphate dehydrogenase (G6PD) deficiency is the most common human enzymopathy. It affects as many as 330 million individuals worldwide. This deficiency may determine neonatal jaundice, chronic nonspherocytic hemolytic anemia and acute hemolytic anemia induced by drugs, infections and broad bean ingestion. The efficacy of blood transfusion is decre
Revista Brasileira de Hematologia e Hemoterapia. Publicado em: 2010
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10. Regional intravenous anesthesia in knee arthroscopy
OBJECTIVE: The goal of the study was to investigate the regional intravenous anesthesia procedure in knee arthroscopy and to evaluate the effects of adding ketamine over the anesthesia block charactery and tourniquet pain. MATERIAL/METHOD: Forty American Society of Anesthesiologists (ASA) II patients who received knee arthroscopy were enrolled. After monitor
Clinics. Publicado em: 2010
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11. A novel c.197T ® A variant among Brazilian neonates with glucose-6-phosphate dehydrogenase deficiency
Glucose-6-phosphate dehydrogenase (G6PD, EC 1.1.1.49) deficiency is the most common enzyme deficiency worldwide, causing a spectrum of diseases including neonatal hyperbilirubinemia and acute or chronic hemolysis. We used the methemoglobin reduction test and G6PD electrophoresis to screen 655 neonates (354 females and 301 males) for common G6PD mutations in
Genetics and Molecular Biology. Publicado em: 2008
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12. Evaluation of the arginine potential in the prevention of the hemotoxicity prompted by dose Dapsone in mice. / Avaliação do potencial da Arginina na prevenção da hemotoxicidade induzida pela Dapsona em ratos
A dapsona, fármaco de escolha no tratamento da hanseníase, na prevenção da malária e no da pneumonia pelo Pneumocystis carinii vem sendo associada a casos clinicamente freqüentes, caracterizadas por metemoglobinemia e anemia hemolítica. Essa hemotoxicidade está diretamente relacionada à N-hidroxilação sofrida pelo fármaco. Com o objetivo de se ve
Publicado em: 2007