Particulate Matter Exposure During Perinatal Life Results in Impaired Glucose Metabolism in Adult Male Rat Offspring

Background/Aims: Particulate matter (PM) is an important risk factor for immunological system imbalance due to its small size, which can reach more distal regions of the respiratory tract, independently of its chemical composition. Some studies have suggested that PM exposure is associated with an increased incidence of diabetes, especially in industrialized urban regions. However, studies regarding the effects of PM exposure during perinatal life on glucose metabolism are limited. We tested whether exposure to PM from an urban area with poor air quality during pregnancy and lactation could cause short- and long-term dysfunction in rat offspring. Methods: Samples of < 10 µm PM were collected in an urban area of Cotonou, Benin (West Africa), and reconstituted in corn oil. Pregnant Wistar rats received 50 µg PM/day by gavage until the end of lactation. After birth, we analyzed the dams’ biochemical parameters as well as those of their male offspring at 21 and 90 days of age. Results: The results showed that PM exposure did not lead to several consequences in dams; however, the male offspring of both ages presented an increase of approximately 15% in body weight. Although the blood glucose levels remained unchanged, the insulin levels were increased 2.5- and 2-fold in PM exposure groups of both ages, respectively. HOMA-IR and HOMA-β were also increased at both ages. We also demonstrated that the number, islet area and insulin immunodensity of pancreatic islets were significantly increased at both ages from PM exposure. Conclusion: Our data show that chronic PM exposure by the oral route during perinatal life in rats leads to glucose dyshomeostasis in male offspring both in early and later life. Thus, we suggest that an ambience with poor air quality, mainly where traffic is dense, can contribute to an increase in metabolic disease incidence

A leitura segundo os documentos oficiais para a Educação Básica

Neste ensaio discutiremos como a leitura e as compreensões de texto se constituem como ferramenta de trabalho para a formação de leitores proficientes na disciplina língua portuguesa e consequentemente em outras disciplinas escolares, a partir das concepções dos Parâmetros Curriculares Nacionais, Orientações Curriculares Nacionais e os Parâmetros Curriculares do Ensino Médio. Palavras-chave: Língua Portuguesa. Leitura. Documentos Oficiais

O trabalho da enfermagem em um serviço de controle de infecção hospitalar (SCIH): relato de experiência / The work of nursing in a hospital infection control service (SCIH): experience report

As infecções relacionadas à assistência à saúde (IRAS) representam um grande problema de saúde pública no Brasil e no mundo. Por isso, um dos campos que a enfermagem trabalha é no SCIH, realizando ações importantes para o combate de IRAS. Sendo assim, o artigo tem por objetivo relatar a experiência de acadêmicos de enfermagem da Universidade da Amazônia (UNAMA) em um SCIH de um hospital particular de Belém, Pará. Este estudo é descritivo com abordagem qualitativa, do tipo relato de experiência. Durante a experiência, notou-se a importância que a enfermagem possui no controle e prevenção das IRAS. De uma forma geral, percebeu-se a influência que um SCIH tem quando relacionado a qualidade do serviço do hospital, haja vista que, os profissionais seguem as normas estabelecidas, e isso influencia diretamente na segurança do paciente e do próprio trabalhador, trazendo benefícios para o paciente, colaboradores e serviços de saúde

Applying the maternal near miss approach for the evaluation of quality of obstetric care : a worked example from a multicenter surveillance study

Objective. To assess quality of care of women with severe maternal morbidity and to identify associated factors. Method. This is a national multicenter cross-sectional study performing surveillance for severe maternal morbidity, using the World Health Organization criteria. The expected number of maternal deaths was calculated with the maternal severity index (MSI) based on the severity of complication, and the standardized mortality ratio (SMR) for each center was estimated. Analyses on the adequacy of care were performed. Results. 17 hospitals were classified as providing adequate and 10 as nonadequate care. Besides almost twofold increase inmaternalmortality ratio, themain factors associated with nonadequate performance were geographic difficulty in accessing health services ( < 0.001), delays related to quality of medical care ( = 0.012), absence of blood derivatives ( = 0.013), difficulties of communication between health services ( = 0.004), and any delay during thewhole process ( = 0.039). Conclusions. This is an example of how evaluation of the performance of health services is possible, using a benchmarking tool specific to Obstetrics. In this study the MSI was a useful tool for identifying differences in maternal mortality ratios and factors associated with nonadequate performance of care

Aerobic Exercise Training Attenuates Tumor Growth and Reduces Insulin Secretion in Walker 256 Tumor-Bearing Rats

Aerobic exercise training can improve insulin sensitivity in many tissues; however, the relationship among exercise, insulin, and cancer cell growth is unclear. We tested the hypothesis that aerobic exercise training begun during adolescence can attenuate Walker 256 tumor growth in adult rats and alter insulin secretion. Thirty-day-old male Wistar rats engaged in treadmill running for 8 weeks, 3 days/week, 44 min/day, at 55–65% VO2max until they were 90 days old (TC, Trained Control). An equivalently aged group was kept inactive during the same period (SC, Sedentary Control). Then, half the animals of the SC and TC groups were reserved as the control condition and the other half were inoculated with Walker 256 cancer cells, yielding two additional groups (Sedentary Walker and Trained Walker). Zero mortalities were observed in tumor-bearing rats. Body weight (BW), food intake, plasma glucose, insulin levels, and peripheral insulin sensitivity were analyzed before and after tumor cell inoculation. We also evaluated tumor growth, metastasis and cachexia. Isolated pancreatic islets secretory activity was analyzed. In addition, we evaluated mechanic sensibility. Our results showed improved physical performance according to the final workload and VO2max and reduced BW in trained rats at the end of the running protocol. Chronic adaptation to the aerobic exercise training decreased tumor weight, cachexia and metastasis and were associated with low glucose and insulin levels and high insulin sensitivity before and after tumor cell inoculation. Aerobic exercise started at young age also reduced pancreatic islet insulin content and insulin secretion in response to a glucose stimulus, without impairing islet morphology in trained rats. Walker 256 tumor-bearing sedentary rats also presented reduced pancreatic islet insulin content, without changing insulin secretion through isolated pancreatic islets. The mechanical sensitivity test indicated that aerobic exercise training did not cause injury or trigger inflammatory processes prior to tumor cell inoculation. Taken together, the current study suggests that aerobic exercise training applied during adolescence may mitigate tumor growth and related disorders in Walker 256 tumor-bearing adult rats. Improved insulin sensibility, lower glucose and insulin levels and/or reduced insulin secretion stimulated by glucose may be implicated in this tumor attenuation

Applying the maternal near miss approach for the evaluation of quality of obstetric care : a worked example from a multicenter surveillance study

Objective. To assess quality of care of women with severe maternal morbidity and to identify associated factors. Method. This is a national multicenter cross-sectional study performing surveillance for severe maternal morbidity, using the World Health Organization criteria. The expected number of maternal deaths was calculated with the maternal severity index (MSI) based on the severity of complication, and the standardized mortality ratio (SMR) for each center was estimated. Analyses on the adequacy of care were performed. Results. 17 hospitals were classified as providing adequate and 10 as nonadequate care. Besides almost twofold increase inmaternalmortality ratio, themain factors associated with nonadequate performance were geographic difficulty in accessing health services ( < 0.001), delays related to quality of medical care ( = 0.012), absence of blood derivatives ( = 0.013), difficulties of communication between health services ( = 0.004), and any delay during thewhole process ( = 0.039). Conclusions. This is an example of how evaluation of the performance of health services is possible, using a benchmarking tool specific to Obstetrics. In this study the MSI was a useful tool for identifying differences in maternal mortality ratios and factors associated with nonadequate performance of care

Núcleos de Ensino da Unesp: artigos 2010: volume 6: políticas públicas e organização escolar

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