Navegando por Assunto "Carboxiprimaquina"

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Acesso aberto (Open Access)
Adesão ao tratamento da malária vivax em crianças
(Universidade Federal do Pará, 2016-04-01) SANTOS, José Alberto Gomes dos; ANDRADE, Marcieni Ataíde de; http://lattes.cnpq.br/8514584872100128
Malaria is an infectious disease endemic in 104 countries and vivax malaria accept responsibility for 25 to 40% of the global burden of disease worldwide. The South America has high transmission rates shown by the annual parasite incidence (API) greater than 1% of the population. In recent years it has been observed in Brazil the prevalence of infection with P. vivax. The treatment protocol isased on the combination of chloroquine and primaquine, however, treatment failures have been reported worldwide including in Brazil with adherence as one of the causes. Several factors can interfere in the adherence between them: education, sex, absence of signs and symptoms and socioeconomic profile. This study evaluated the adherence to malaria treatment from determining the profile demographic partner of children with vivax malaria in Anajás and determined the plasma concentrations of chloroquine and primaquine of the study patients. For the profile of the participants was used questionnaire was complete source of information. To measure adherence to treatment was used indirect test Morisky-Green assessing the patient's attitude towards treatment. The plasma concentration of primaquine and its metabolite was made by collecting paper filter venous blood on day D1 and D7 and determined HPLC. The profile of patients showed that most of the children were male, with the primary caregiver mother, education and income were considered low, despite the distribution the use of mosquito nets it is irregular, 92.4% of households have no sewage system, and 33.3% use water from the river for consumption .The indirect test Morisky- Green classified 42 children as adherent and 08 as no adherent The plasma concentration of PQ in D7 adherent and no adherent were related and showed no significant difference, since the CPQ concentrations in D7 Adherent showed statistically significant result, with higher values in adherent patients.
Acesso aberto (Open Access)
Avaliação da adesão ao tratamento preconizado para malária: determinação da primaquina em pacientes diagnosticados com Plasmodium vivax
(Universidade Federal do Pará, 2016-03-31) GONÇALVES FILHO, Wilson Vieira; VIEIRA, José Luiz Fernandes; http://lattes.cnpq.br/2739079559531098; ANDRADE, Marcieni Ataíde de; http://lattes.cnpq.br/8514584872100128
Malaria is a disease that threatens 50% of the world population living in endemic areas such as Africa, Asia and Latin America. Concerning malaria caused by Plasmodium vivax in Brazil, which treatment is based on primaquine and chloroquine, it is a major public health issue that hinders the development of the Amazon region and adherence to drug therapy is one of the main factors that influence the effectiveness of the drug. This study uses indirect methods assess treatment adherence, correlating it with plasma concentrations of primaquine and carboxyprimaquine. Thus, a cross-sectional observational controlled study was conducted with 27 patients in Anajás, Pará before (D0), during (D1) and after (D7) treatment using the antimalarials, followed by the assessment of the patients with questions based on Morisky-Green test at the end of the treatment. Higher prevalence of vivax malaria was observed in males (70.4%) and age group of 20-39 years (55.56%), Morisky-Green test indicated adherence of 75%, 15 out of 20 patients, with hit rates of 80%, 65%, 70% and 65% to the questions. Mean-value of primaquine concentration on D1 was 134.8 ng/mL, and 131.9 ng/mL on D7, values for carboxyprimaquine are 408 ng/ml and 529.4 ng/mL respectively. It is possible to observe a statistically significant difference in the carboxyprimaquine values between D1 and D7 in the acceding group defined by the Morisky-Green tests, showing that carboxyprimaquine accumulates in the body; therefore being more suitable for assessing adherence to treatment. Therefore, it is important to point out these concentrations of primaquine and carboxyprimaquine consist as the first determination study of drugs and metabolites found for the short-course treatment suggested by the Ministry of Health for vivax malaria in the Amazon region, supporting the studies of adherence surveys regarding antimalarials.
Acesso aberto (Open Access)
Marcadores de estresse oxidativo e concentrações de primaquina e carboxiprimaquina em pacientes com malária por Plasmodium vivax
(Universidade Federal do Pará, 2014-11-06) RODRIGUES, Luiz Carlos de Souza; VIEIRA, José Luiz Fernandes; http://lattes.cnpq.br/2739079559531098
The changes in redox cycle has been associated with the physiopathology of severity of malaria in experimental models and in humans. However, a few studies evaluated the changes in redox equilibrium of patients with no severe malaria by P.vivax, which comprise the majority of the cases of disease. The variations of oxidative damage and the respective antioxidant response of human host were not compared before, during and after chemotherapy. Also, the mechanisms responsible by the generation of free radical in each phase that is, the heme degradation, respiratory burst of macrophages or antimalarials uses, were not determined. The objective of this study was to estimate the levels of biomarkers of oxidative damage and the respective antioxidant response, as well as primaquine and carboxyprimaquine whole blood levels in malaria by P. vivax. Therefore, were enrolled 38 patients with slide confirmed infection by P. vivax followed by 28 days. Serial blood samples were collected on pre-doses samples (D0) and on D2, D7 and D14. The oxidative damage and the antioxidant defense were estimated by the spectrophotometric measures of thiobarbituric acid reatives substances and methemoglobinemia, and by total antioxidant capacity and reduced glutathione, respectively. The control group consisted of 19 healthy volunteers matched for age and gender ratio. Primaquine and its major metabolite were determined by high performance liquid chromatography. The results revealed that the disease occurred in male patients of working age. Haematological parameters remained constant during the study. Biochemical evaluation showed a significant decrease in HDL-cholesterol levels during the study. Methemoglobinemia was associated with antimalarials uses, because the levels were similar to control group and increased significantly during the treatment. The levels of thiobarbituric acid reatives substances were associated with plasmodium and probably respiratory burst of macrophages, because they were higher than control group on D0, and no significant changes were observed after antimalarials usage. Total antioxidant capacity and oxidative stress levels were similar during the study as well as in the control group. The levels of reduced glutathione decreased significantly during the study and doesn’t be associated with both parasitaemia. Primaquine does not show a significant accumulation, and the concentrations of parent drug and its carboxyl metabolite were not associated with methemoglobinemia and thiobarbituric acid reatives substances levels.