Artigos Científicos - FARM/ICS
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Item Acesso aberto (Open Access) Seroepidemiology of arbovirus in communities living under the influence of the lake of a hydroelectric dam in Brazil(Universidade Federal do Pará, 2018-03) BRITO, Mioni Thieli Figueredo Magalhães; AARÃO, Tinara Leila de Souza; PINTO, Denise da SilvaIntroduction The arbovirus proposes an important problem of public health in Brazil, especially in the Amazon, due to its capacity to cause outbreaks with high levels of morbidity-mortality in humans as well as in animals. Objective This paper had the objective to estimate the prevalence of antibodies to arbovirus in communities that live under the influence of the artificial lake of UHE Tucuruí in the State of Pará, Brazil. Method The analytical transversal study has selected 657 blood serum samples of individuals over 18, both genders, residents at the Sustainable Development Reserves (SDR) in the region of the lake of UHE Tucuruí. The epidemiological information has been registered in an instrument especially designed for such a study and the blood samples were collected in two periods of high and low tide of the lake. The blood serum tests were performed by the method of hemagglutination inhibition (HI). Results The results revealed a prevalence of positive antibodies to arbovirus of 85.0%, being 84.1% related to Flavivirus (vaccine strain of YFV), 25.5% related to Alphavirus and 34.6% to Bunyavirus. The results of serum prevalence to arbovirus between the periods of high tide and low tide have revealed significance amongst the Alphavirus, not observed in the other families. Conclusion In general, the data from this paper have suggested that the anthropoid actions on the environment of the lake have become determinant factors for the prevalence of arboviral antibodies.Item Acesso aberto (Open Access) Moderada endemicidade da infecção pelo vírus linfotrópico-T humano na região metropolitana de Belém, Pará, Brasil(Universidade Federal do Pará, 2018-10) SILVA, Ingrid Christiane; PINHEIRO, Bruna Teles; NOBRE, Akim Felipe Santos; COELHO, Jaciana Lima; PEREIRA, Cássia Cristine Costa; COVRE, Louise de Souza Canto; ALMEIDA, Camila Pâmela Santos de; VIANA, Maria de Nazaré do Socorro de Almeida; ALMEIDA, Danilo de Souza; RIBEIRO, Jairo Falcão; SANTOS, Yago Costa Vasconcelos dos; ARAÚJO, Marcos William Leão de; BORGES, Mariza da Silva; NASCIMENTO, Lisandra Duarte; VALENTIM, Lorena Saldanha; CASSEB, Jorge Simao do Rosario; COSTA, Carlos Araujo da; SOUSA, Maisa Silva deThe spread of the HTLV infection in families living in the metropolitan area of Belém, Pará, Brazil, and the lack of studies in the general population requires studies to better understand its prevalence in the region. Methods: An anti-HTLV-1/HTLV-2 antibodies test was carried out on random adults in public places in Belém between November 2014 and November 2015. A proviral DNA test detected if the person was infected, and then a clinical evaluation and an intrafamilial investigation were carried out. Results: Of the 1059 individuals being investigated, 21 (2.0%) had seroreagent samples, 15 (1.4%) had HTLV-1, 5 (0.5%) had HTLV-2, and proviral DNA was undetectable in one case. The mean age of the infected people (57.2) was higher than that of those that were uninfected (46.2) (p = 0.0010). The prevalence of infection increased with age, especially in individuals with a family income equal to or less than a minimum wage. Intrafamilial transmission seems to have occurred in all of the families being studied. Among the patients with HTLV-1, 30% (3/10) already had some symptom related to the infection. Discussion: The increase in prevalence rates according to age may be due to late seroconversion of a previously acquired infection, or the cumulative risk of new infections, especially in women. Conclusion: There was a moderate prevalence of the HTLV infection among adult individuals from the metropolitan area of Belém, with a predominance of HTLV-1. This infection was associated with low income and increasingly older women. It also presented intrafamily spread and negligence in the diagnosis of associated diseases.Item Acesso aberto (Open Access) Sapoviruses in children with acute gastroenteritis from Manaus, Amazon region, Brazil, 2010-2011(Universidade Federal do Pará, 2016-11-03) REYMÃO, Tammy Kathlyn Amaral; HERNANDEZ, Juliana das Merces; COSTA, Samya Thalita Picanço da; SOUSA, Maisa Silva de; OLIVEIRA, Darleise de Souza; SILVA, Luciana Damascena da; BANDEIRA, Renato da Silva; LIMA, Ian Carlos Gomes de; SOARES, Luana da Silva; MASCARENHAS, Joana D'Arc Pereira; GABBAY, Yvone BenchimolSapoviruses (SaVs) are responsible for acute gastroenteritis in humans, especially children and the elderly. In Brazil, data on SaVs infections are very limited, especially in Northern Brazil. Here, we investigated the occurrence of SaVs in samples from hospitalized children under ten years old that presented acute gastroenteritis. Positive samples were genotyped and phylogenetic analysis was performed using prototype strains sequences obtained from GenBank database. In total, 156 fecal samples were screened by RT-PCR for SaVs. A positivity rate of 3.8% (6/156) was found in children under three years of age. Four genotypes were detected: GI.I, GI.2 and GII.2?-GII.4?/GII.4, suggesting a possible inter-genotypes recombination. Most infections (83.3%) occurred between August and September. The positivity was similar to that found in other countries and genotyping demonstrated the presence of distinct genotypes. To our knowledge, this is the first study reporting the circulation of SaVs in Manaus, state of Amazonas, Amazon region, Brazil.Item Acesso aberto (Open Access) Factors associated with non-adherence to the treatment of vivax malaria in a rural community from the Brazilian Amazon Basin(Universidade Federal do Pará, 2016-04) ALMEIDA, Eduardo Dias; VIEIRA, José Luiz FernandesIntroduction: We investigated the association between demographic and behavioral factors and non-adherence to antimalarial therapy. Methods: A demographic questionnaire and 5-item self-reported questionnaire regarding non-adherence were completed by 135 patients after treatment for Plasmodium vivax. Results: Treatment interruption, but not demographic factors, was significantly associated with non-adherence to therapy. The likelihood of non-adherence was 5.16 times higher when the patients felt better than when they felt worse. The relative risk of parasitic resurgence was 3.04 times higher in non-adherent patients. Conclusions: Treatment interruption is significantly associated with treatment adherence.Item Acesso aberto (Open Access) Sentidos atribuídos à integralidade: entre o que é preconizado e vivido na equipe multidisciplinar(Universidade Federal do Pará, 2017-09) SILVA, Marcos Valério Santos da; MIRANDA, Gilza Brena Nonato; ANDRADE, Marcieni Ataide deThe aim of this paper is to discuss the practitioners’ view about icomprehensiveness in health. This study is part of a Masters’ degree qualitative dissertation, held in Belém, Pará, in the period from june to august 2015. Most participants attributed the meaning of comprehensiveness in health as “a holistic view of the being,” and were able to see the relationship between comprehensiveness and multidisciplinary approach. There is the need todeepen the knowledge of the principles of SUS even during training, to accomplish more effective health actions.Item Acesso aberto (Open Access) Sabedoria popular no uso de plantas medicinais pelos moradores do bairro do sossego no distrito de Marudá - PA(Universidade Federal do Pará, 2015) FLOR, Alessandra Simone Santos de Oliveira; BARBOSA, Wagner Luiz RamosIn the Amazon medicinal plants are a relevant resource for the treatment of several diseases, given the cultural context, access, reliability and low cost compared to industrial medicine. Inside this context, it is located the Marudá District, in the municipality of Marapanim,160 km far from Belém state of Pará, where it is common to use medicinal plants in order to treat health problems. In this sense, this work investigates the popular phytotherapy practice of herbal medicine practiced by the residents of the“Sossego” neighborhood in the District of Marudá-PA, illustrating the importance of medicinal plants for this human group in cultural, economic and environment context. For such purpose, we used a ethnopharmaceutical survey aiming to offer a prospecting tool of these plants employed as a therapeutic resource for the local population.Item Acesso aberto (Open Access) Plantas medicinais e seus usos na comunidade da Barra do Jucu, Vila Velha, ES(Universidade Federal do Pará, 2010-09) SILVA, Priscila Albertasse Dutra da; THOMAZ, Luciana Dias; ANDRADE, Marcieni Ataide deBarra do Jucu is a community from Vila Velha Municipality, Espírito Santo State, Brazil, located in a restinga area and inhabited by "caiçaras", whose income is mainly from fishing. The aim of this study was to recover and systematize popular information about the medicinal plants used in this locality. In total, 86 species belonging to 41 families were cited, of which Lamiaceae, Asteraceae and Solanaceae had the largest number of species. The mentioned species are related to 59 medicinal uses, mainly to diseases associated with the digestive system. The number of citations per informant for each taxon, as well as the number of uses was quantified, indicating the most used species in this area, including Plectranthus barbatus Andrews, the most cited one, and Anacardium occidentale L., the most used one. The results demonstrated that the population has wide knowledge about the plants and their healing properties.Item Acesso aberto (Open Access) Clinical applications and methemoglobinemia induced by dapsone(2014-10) OLIVEIRA, Fábio Rodrigues de; PESSÔA, Mariely Cristine Amador; ALBUQUERQUE, Rosyana de Fatima Vieira de; SCHALCHER, Taysa Ribeiro; MONTEIRO, Marta ChagasDapsone is a synthetic sulfone that is used as an antibiotic in humans and animals to prevent and treat diseases including leprosy, tuberculosis, malaria, and Pneumocystis carinii pneumonia and Toxoplasma gondii encephalitis in acquired immune deficiency syndrome (AIDS) patients as well as in anti-inflammatory conditions, such as dermatitis herpetiformis. However, this drug is also associated with several adverse effects, including dose-related hemolysis, methemoglobinemia, psychosis, peripheral neuropathy, agranulocytosis, aplastic anemia, hypersensitivity syndrome, sulfone syndrome, and others. Of these effects, methemoglobinemia is the most common side effect of dapsone, which leads to functional anemia and cellular hypoxia with symptoms of cyanosis, headache, fatigue, tachycardia, weakness, and dizziness. Thus, this review summarizes relevant information on the structure, mechanism of action, clinical indication, and adverse reactions of dapsone.Item Acesso aberto (Open Access) Prescrições medicamentosas de pacientes atendidos no ambulatório de geriatria de um hospital universitário: estudo transversal descritivo(2014-08) CUENTRO, Vanessa da Silva; ANDRADE, Marcieni Ataide de; GERLACK, Letícia Farias; BÓS, Ângelo José Gonçalves; SILVA, Marcos Valério Santos da; OLIVEIRA, Alex Ferreira deThe scope of this study was to evaluate drug prescriptions for elderly patients in the geriatric outpatient ward of a hospital. A cross-sectional descriptive study was conducted in a university hospital, with the application of a questionnaire. Patients aged > 60 years were interviewed about their drug prescriptions and a total of 208 patients were interviewed. The average number of drugs used per person was 3.8 and the drugs most used were for the cardiovascular system (37%). 406 potential interactions were identified in 140 patients (67.3%), and duplicate therapy was found in two prescriptions. The potentially inappropriate drug most used for the elderly was nifedipine (2.4%). Data from this study support the relevance of the issue of drug use among the elderly, thus reinforcing the importance of the evaluation of the process of the prescription of drugs for this population.Item Acesso aberto (Open Access) Antinociceptive effects of the essential oil of Mentha x villosa leaf and its major constituent piperitenone oxide in mice(2009-07) SOUSA, Pergentino José da Cunha; LINARD, Cybelle Facanha Barreto Medeiros; BATISTA, Danilo de Azevedo; OLIVEIRA, Ariclécio Cunha de; SOUZA, Andrelina Noronha Coelho de; CARDOSO, José Henrique LealMentha x villosa Huds (Labiatae) is an aromatic herb widely used in folk medicine. Since the essential oil of the herb has many pharmacological activities, including antispasmodic effects, we determined whether the oil and its major constituent, piperitenone oxide (PO), have antinociceptive activity. The essential oil of M. x villosa (EOMV) and PO administered orally at 200 mg/kg (vehicle: 0.1% Tween 80 in water) significantly reduced the writhings induced by acetic acid from control values of 59.5 ± 3.1 s (N = 10) to 31.9 ± 2.8 s (N = 10) and 23.8 ± 3.4 s (N = 10), respectively. When administered at 100 and 200 mg/kg, EOMV reduced the paw licking time for the second phase of the formalin test from the control value of 20.6 ± 2.1 s (N = 13) to 5.3 ± 2.2 s (N = 12) and 2.7 ± 1.2 s (N = 18), respectively. At 100 and 200 mg/kg, PO reduced this second phase to 8.3 ± 2.7 s (N = 12) and 3.0 ± 1.2 s (N = 10), respectively. This effect of EOMV and PO was not reversed by naloxone. EOMV and PO had no significant effect on the first phase of the formalin test. As evaluated by the hot-plate and tail immersion test, EOMV and PO, at doses up to 200 mg/kg, showed no analgesic activity. These results show that EOMV and PO have antinociceptive activity and suggest that this effect is probably an indirect anti-inflammatory effect, which does not involve the central nervous system.Item Acesso aberto (Open Access) Plant-derived antimalarial agents: new leads and efficient phythomedicines. Part I. Alkaloids(2009-12) OLIVEIRA, Alaíde Braga de; DOLABELA, Maria Fâni; BRAGA, Fernão Castro; JÁCOME, Rose Lisieux Ribeiro Paiva; VAROTTI, Fernando de Pilla; PÓVOA, Marinete MarinsMalaria remains one of the most serious world health problem and the major cause of mortality and morbidity in the endemic regions. Brazil is among the 30 high-burden countries and most of the cases occur in the Legal Amazonian Region. New chemotherapeutical agents are needed for the treatment of malaria. Many plant species are used in traditional medicines of malarious countries and a relatively few number of these have been investigated for evaluation of their antimalarial effect. Still lower is the number of those that have had the active natural compounds isolated and the toxicity determined. This area is, then, of great research interest. discovery project of antimalarial natural products from plants traditionally used to treat malaria must include in vitro and in vivo assays as well as bioguided isolation of active compounds. The final products would be antimalarial chemical entities, potential new drugs or templates for new drugs development, and/or standardized antimalarial extracts which are required for pre-clinical and clinical studies when the aim is the development of effective and safe phythomedicines. This review discusses these two approaches, presents briefly the screening methodologies for evaluation of antimalarial activity and focuses the activity of alkaloids belonging to different structural classes as well as its importance as new antimalarial drugs or leads and chemical markers for phytomedicines.Item Acesso aberto (Open Access) In vitro antimalarial activity of six Aspidosperma species from the state of Minas Gerais (Brazil)(2012-12) DOLABELA, Maria Fâni; OLIVEIRA, Salma Gomes de; PERES, José M.; NASCIMENTO, José M. S.; PÓVOA, Marinete Marins; OLIVEIRA, Alaíde Braga deEthnomedicinal informations point to some Aspidosperma species (Apocynaceae) as antimalarial plants in Brazil and have motivated the evaluation of six species which were collected in the state of Minas Gerais: A. cylindrocarpon Müll. Arg., A. parvifolium A. DC., A. olivaceum Müll. Arg., A. ramiflorum Müll. Arg., A. spruceanum Benth. ex Müll. Arg. and A. tomentosum Mart.. A total of 23 extracts of different plant parts in different solvents were assayed in vitro against chloroquine-resistant (W2) and chloroquine-sensitive (3D7) strains of Plasmodium falciparum. All the extracts were shown to be active with IC50 values in the range of 5.0 ± 0 2.8 µg/mL to 65.0 ± 4.2 µg/mL. TLC profile of the extracts revealed the presence of alkaloids in the six species assayed. These results seem to confirm the popular use of Aspidosperma species to treat human malaria in Brazil and seem point to alkaloids as the putative active compounds of the assayed species.Item Acesso aberto (Open Access) Anti-inflammatory and analgesic activities of Hypericum brasiliense (Willd) standardized extract(2008-09) PERAZZO, Fabio Ferreira; LIMA, Leonardo Mandalho; PADILHA, Marina de Mesquita; ROCHA, Leandro Machado; SOUSA, Pergentino José da Cunha; CARVALHO, José Carlos TavaresThe anti-inflammatory and antinociceptive activities of the standardized leaves extract (HBSE) of Hypericum brasiliense (Guttiferae) were evaluated in animal models. Male Wistar rats were treated with H. brasiliense extract (50, 250 and 500 mg/kg, p.o.) in 3% Tween 80 0.9% saline solution. The treatment of the edema induced by carrageenin with HBSE (500 mg/kg) showed significant inhibition when compared to the control group. At this dose, the edema decreased by 31.25% in the third hour after treatment (edema peak), but the dose of 50 mg/kg has inhibited the edema by 53.13% (p < 0.05). At the dose of 50 mg/kg, the decrease of the edema induced by dextran was similar to that caused by cyproheptadine. The decrease of the formation of granulomatous tissue (6.6%) was comparable to the control group. The HBSE inhibited the abdominal constrictions induced by acetic acid. At a dose of 50 mg/kg, the inhibition of the abdominal constrictions (46.4%) was comparable to that produced by indomethacin (42.9%). A dose of 250 mg/kg inhibited these constrictions by 70.66% when compared to control (p < 0.001). In the hot-plate test, an increase in the latency time was observed at a 50 mg/kg dose. These data suggest that HBSE has anti-inflammatory activity on acute process, developed principally by arachdonic acid derivates and analgesic effect due to its probable involvement in the Central Nervous System.Item Acesso aberto (Open Access) Estudo preliminar da atividade antiinflamatória de Bryophillum calycinum Salisb(2005-03) SOUSA, Pergentino José da Cunha; ROCHA, José Carlos da Silva; PESSÔA, Alexandre Mendes; ALVES, Luiz Artur Dias; CARVALHO, José Carlos TavaresThe acute toxicity (LD50) and the anti-inflammatory effect of the crude freeze-dried aqueous extract of the leaves of Bryophillumcalycinum Salisb. (EBALBc) was evaluated, on the rat paw edema induced by carrageenin and dextran. The dose of 500 mg/kg (p.o) inhibited the paw edema induced by dextran in a significative manner (p < 0.05, ANOVA, Student Newman-Keuls test) 60 and 90 minutes, after stimulus while only the oral dose of 1 g/kg of EBALBc inhibited the paw edema induced by carrageenin. The results indicated an anti-edematogenic effect of the extract when tested on the paw edema induced by dextran and carrageenin, suggesting larger specificity of action on the edema induced by dextran. The EBALBc administered orally, in the doses of the 0.1 to 8 g/kg, it did not cause death, making impossible to determine the LD50.Item Acesso aberto (Open Access) Anti-inflammatory and antinociceptive activities of Euterpe oleracea Mart., Arecaceae, oil(2011-02) FAVACHO, Hugo Alexandre Silva; OLIVEIRA, Bianca R.; SANTOS, Kelem Costa dos; MEDEIROS, Benedito Júnior Lima de; SOUSA, Pergentino José da Cunha; PERAZZO, Fabio Ferreira; CARVALHO, José Carlos TavaresThe oil of the fruits of Euterpe oleracea Mart., Arecaceae (OEO), was evaluated in models of inflammation and hyperalgesia in vivo to study its effects on these conditions. The experimental models contained the writhing test in mice, rat paw edema, granuloma test in rats, vascular permeability in rats, cell migration to the peritoneal cavity in rats and ear erythema induced by croton oil in mice. Doses of 500, 1000 and 1500 mg/kg of OEO were administered orally. The observed number of writhes was inhibited by 33.67, 45.88 and 55.58%, respectively. OEO produced a dose-dependent effect, with linear correlation coefficient R=0.99 (y=0.0219x+23.133), and the median effective dose found was 1226.8 mg/kg. The oral administration of 1226.8 mg/kg of OEO inhibited carrageenan-induced edema by 29.18% (p<0.05) when compared to the control group. The daily administration of OEO for six days inhibited the formation of granulomatous tissue by 36.66% (p<0.01). In ear erythema induced by croton oil, OEO presented a significant inhibition (37.9%). In the vascular permeability test, treatment with OEO decreased the response to histamine, inhibiting vascular permeability by 54.16%. In carrageenan-induced peritonitis, OEO reduced the number of neutrophils migrating compared to the control group by 80.14%. These results suggested that OEO has anti-inflammatory and antinociceptive activities, probably of peripheral origin and linked to prostaglandin biosynthesis inhibition.Item Acesso aberto (Open Access) Caracterização físico-química e análises por espectrofotometria e cromatografia de Peperomia pellucida L. (H. B. K.)(2013) SILVA, Rosali Maria Ferreira da; RIBEIRO, Jeane Francisca Alves; FREITAS, Manolo Cleiton Costa de; ARRUDA, Mara Silvia Pinheiro; NASCIMENTO, M.N.; BARBOSA, Wagner Luiz Ramos; ROLIM NETO, Pedro JoséThe aim of this study was the physical chemical characterization of the powder and the tincture, and the chromatographic and spectrophotometric analysis of the Peperomiapellucida L. (H. B. K.) dry extract. The methodology followed the Farmacopeia Brasileira IV ed., except for the chemical prospection, the chromatographic profile obtained and the spectrophotometry of the dry extract, and determination of dried residues. The chemical prospection revealed the presence of foaming saponins; reducing sugars; proteins and amino acids; phenols; tannins; flavonoids; steroids and triterpenoids; depsideos and depsidones. The best profile from TLC for flavonoidic fraction was obtained with methanol/formic acid (90:10 v/v). HPLC confirmed the presence of 3 ‘,4’,7-tri-methoxyflavone in the dry extract of the plant material. The results obtained in this work should contribute for the determination of specifications for a future monograph on Peperomia pellucida L. (H.B.K.)Item Acesso aberto (Open Access) Impact of health legislation on the sale of anorectics in a city in the Amazon region(Instituto Nacional de Pesquisas da Amazônia, 2012-06) CASTRO, Luana Valéria da Silva; FARIAS JUNIOR, Gilvo; TEIXEIRA, Francisco Martins; VIEIRA, José Ricardo dos Santos; MAIA, Cristiane do Socorro FerrazOBJECTIVES: The International Narcotics Control Board released its 2005 annual report, highlighting the Brazil population as one of the largest consumers of anorectics. In Brazil, the National Health Surveillance Agency issued the resolution RDC 58/2007 in order to control the prescription and sale of such drugs. In Belém, the biggest city in the Brazilian Amazon region, this resolution came into force in 2008, leading to inspections of drugstores and magistral pharmacies. The aim of this work was to evaluate the consumption of psychotropic anorectic drugs and the impact of RDC 58/2007 on the prescription and dispensing of anorectics in drugstores and magistral pharmacies in Belém. METHODOLOGY: A retrospective quantitative and descriptive study was conducted of records from the Municipal Department of Health Surveillance of Belém, for 2005 to 2008. The differences in findings were regarded significant when p < 0.05. RESULTS: A total of 1,641 balance sheets of drugstores and magistral pharmacies were analyzed. Amfepramone was the most dispensed medication, followed by fenproporex and mazindol. The highest consumption of anorectics occurred in magistral pharmacies. In 2008, there was a significant reduction in dispensing of anorectics, in drugstores as well as in magistral pharmacies. CONCLUSIONS: This study showed that there was a decrease in the dispensing of anorectics after RDC 58/2007 came into force, and that the magistral pharmacies dispensed more of these drugs. This resolution is a remarkable tool in health control, where it is of great benefit to public health and contributes substantially to the rational use of medicines in Brazil.Item Acesso aberto (Open Access) Avaliação toxicológica do óleo essencial de Piper aduncum L.(2008-06) SOUSA, Pergentino José da Cunha; BARROS, Carlos Augusto Lima; ROCHA, José Carlos da Silva; LIRA, Denisléia Sertão; MONTEIRO, Gisele Muniz; MAIA, José Guilherme SoaresThe aim of this work was the acute and subacute toxicological evaluation of the essential oil of Piper aduncum with the determination of the LD50 in mice and the analysis of their hematological and biochemical parameters in rats. The plant is used in the Amazon folk medicine for several diseases and the phenylpropanoid dilapiolle is the main constituent of its essential oil, possessing insecticidal, fungicidal, bactericidal, larvicidal and molluscicidal properties. The LD50 was 2.400 ± 191.7 mg/kg. The essential oil did not change the hematological and biochemical parameters in a significant manner when compared with the control in the subacute treatment, excepting the reduction of creatinine. The LD50 and the hematological and biochemical results have suggested that the essential oil presents low toxicity.Item Acesso aberto (Open Access) Relationship between plasma and red blood cell concentrations of quinine in Brazilian children with uncomplicated Plasmodium falciparummalaria on oral therapy(2009-04) VIEIRA, José Luiz Fernandes; GOMES, Andreza de Lourdes Souza; BORGES, Larissa Maria Guimarães; GUIMARÃES, Erika RodriguesWe determined the relationship between plasma and red blood cell concentrations of quinine in children with uncomplicated falciparum malaria from an endemic area of Amazonian region. Quinine was determined by high performance liquid chromatography with ultraviolet detection. In the steady state the ratio between plasma and red blood cell quinine concentration was 1.89 ± 1.25 ranging from 1.05 to 2.34. This result demonstrated that quinine do not concentrate in red blood cell of Brazilian children and characterize the absence of interracial difference in this relationship.Item Acesso aberto (Open Access) Methemoglobinemia and dapsone levels in patients with leprosy(2010-06) VIEIRA, José Luiz Fernandes; RIVERA, Juan Gonzalo Bardález; MARTINS, Ana de Nazaré Silva; SILVA, Jorge Pereira da; SALGADO, Claudio GuedesThe 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 spectrophotometry. The mean dapsone concentrations in male was 1.42 g/mL and in female was 2.42 g/mL. The mean methemoglobin levels in male was 3.09 µg/mL; 191%, and in female was 2.84 ± 1.67%. No correlations were seen between dapsone levels and methemoglobin in male and female patients. Our results demonstrated that the dosage of dapsone in leprosy treatment does not promote a significant methemoglobinemia.