Navegando por Autor "TAKANASHI, Silvania Yukiko Lins"

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Acesso aberto (Open Access)
Exposição ao mercúrio e desenvolvimento motor de crianças quilombolas na região do Baixo Amazonas
(Universidade Federal do Pará, 2014) TAKANASHI, Silvania Yukiko Lins; PINHEIRO, Maria da Conceição Nascimento; http://lattes.cnpq.br/6353829454533268
In the Amazon region, exposure to mercury (Hg) can be considered as chronic, with the main study areas located in areas with a history of gold mining activities, one of the sources of this metal. Recently it has been assigned the release from biomass and soil during the burning of forest and ferralsols with significant amounts of Hg. The confirmation of the presence of Hg in humans and fish and the consequences of this metal’s exposure, as documented in the literature, lead to concern about the health of the exposed population. The quilombolas, one of the traditional populations of the lower Amazon region, have a strong bond to the environment occupied by them, and also have the fish as a diet option and as their livelihood, which raises on them the possibility of Hg’s exposure, reason for increase them in this research, that aimed to evaluate the mercury’s exposure of children and the interference on quilombolas motor development. 279 children participated in the study, inhabitants in nine communities itemized as lowland areas (Saracura, Arapemã, Nova Vista do Ituqui, São José and São Raimundo do Ituqui) and plateau (Bom Jardim, Tiningu, Murumuru, Murumurutuba). Evaluation of capillary samples showed total mercury values (THg) 0,03 to 14,94 μg/g, with the lowland’s children presenting a higher Hg exposure, comparing with children from the plateau region (p-value=0,011). A statistically significant correlation of THg values with age (p-value=0,010) and males (p-value =0,001) was identified. The frequency of diet based on fish, high in the communities, showed statistical correlation with THg levels of children. The investigation of motor development, conducted by Motor Development Scale (MDS) proposed by Rosa Neto (2002), showed no statistically average difference in the results for the General Motor Quotient (GMQ) between children from the control group, with THg below 2μg/g, and research group, with THg above 2μg/g. Considering the motricity evaluation, It was observed a statistically significant difference: A normal high result for motricity among the groups (p-value <0,001), with the control group showing better results; At the normal high results of body schema (p-value=0,034), with the control group showing the best results; At the result very bottom for time organization (p-value=0,004) for the study group and normal low result, with higher frequency in the control group (p-value=0,003). In relation to anthropometric measurements, It was found that there was statistical difference in weight results in the study group (p-value=0,012) and children with short stature (p-value=0,001), with worse results of MDS. Considering the investigation of intestinal parasites, anemia and socioeconomic classification, other interfering likely child development in this population, revealed statistically significant differences of EDM to the occurrence of anemia only (p-value=0,041). The quilombolas children are exposed to Hg, although do not live near mining areas. The orientation on conscious based diet on fish was performed, however, this population should be monitored, as Hg may continue to progressively affecting their development.
Acesso aberto (Open Access)
Inherited hemoglobin disorders in an Afro-Amazonian community: Saracura
(2012-07) CARDOSO, Greice de Lemos; TAKANASHI, Silvania Yukiko Lins; GUERREIRO, João Farias
The most common hemoglobinopathies, viz, hemoglobins S and C, and α-and β-thalassemias, were investigated through the molecular screening of 116 subjects from the community of Saracura, comprising fugitive African slaves from farms of the municipality of Santarém, in the west of Pará State, Brazilian Amazon. The observed frequency of the HBB*S gene (0.9%) was significantly lower than that encountered in other Afro-derived communities in the region. Concomitantly, the absence of the HBB*C allele has been reported for most of the Afro-Amazonian communities thus far studied. As remnant populations of quilombos are generally small, the heterogeneous distribution of HBB*S and HBB*C alleles among them is probably due to genetic drift and/or founder effect. The observed frequency of 3.7 kb deletion in Saracura (8.5%) was consistent with the African origin of the population, with a certain degree of local differentiation and admixture with individuals of Caucasian ancestry, placed in evidence by the occurrence of - -(MED) deletion (1.2%), a common mutation in Mediterranean regions. As regards f-thalassemia, among the seven different mutations found in Saracura, three βºand two β+ mutations were of Mediterranean origin, and two β+ of African. Thus, only 28% of the local β-thalassemia mutations found in Saracura were of African origin.