The mitigating effect of Spirulina (Arthrospira platensis) on the hemotoxicity of gibberellic acid on juvenile tilapia (Oreochromis niloticus).

The use of plant growth regulators has led to environmental contamination of water bodies that occur adjacent to agricultural areas. Some of these chemicals are bioactive, not only to plants, but also to non-target exposed biota, namely of the aquatic compartment. Previous work demonstrated the establishment of hepato- and nephrotoxic effects in juvenile tilapia (Oreochromis niloticus) exposed via aquatic media to gibberellic acid (GA3), which is among the most used plant growth regulators, in agricultural practices. Here, we investigated the effect of GA3 on hematological indices, poikilocytosis, nuclear abnormalities, and genotoxic indices measured in Nile tilapia (Oreochromis niloticus), as well as the putative protective effects of dietary supplementation of Spirulina (Arthrospira platensis). Fish were evenly assorted into 5 groups: group I served as a control, and groups II-V were fed diets supplemented with Spirulina at rates of 0 g/kg, 5 g/kg, 20 g/kg, and 100 g/kg, respectively, for 2 months before being exposed to 150 mg/L GA3. The results revealed that GA3 exposure decreased significantly all hematological indices (P < 0.05), except leucocytes and mean corpuscular hemoglobin concentration (MCHC), compared to the control group (P > 0.05). GA3 exposure increased significantly the percentage of nuclear abnormalities, altered erythrocytes and the percentages of tail DNA, compared to the control group (P < 0.05). Spirulina supplementation restored the hematological, poikilocytosis, nuclear abnormalities, and the percentages of tail DNA to near normal levels. The 100 g/kg SP treatment was the most effective in attaining such effect, showing concentration-dependency. The present study reinforces our findings of the toxicity of GA3 on O. niloticus and suggests that the addition of Spirulina to fish diet can mitigate the hemotoxic effects of GA3.

Effects of melatonin supplementation on diabetes: A systematic review and meta-analysis of randomized clinical trials.

BACKGROUND & AIMS: Melatonin appears as a supplement capable of helping with diabetes. However, there is no evidence from meta-analyses that showed significant results in insulin resistance and glycated hemoglobin. This study aimed to review the literature on randomized clinical trials that evaluated melatonin supplementation effects, compared to placebo, on diabetes parameters in humans. METHODS: We conducted a systematic review and meta-analysis in the following databases: Pubmed, LILACS, Scielo, Scopus, Web of Science, Cochrane, and Embase. We included randomized clinical trials investigating melatonin supplementation's effects, compared to placebo, on fasting blood glucose, insulin resistance, and glycated hemoglobin. Non-randomized clinical trials, observation studies, and animal models were excluded. The Cochrane scale assessed the quality of the studies. We conducted a meta-analysis on fasting blood glucose, insulin resistance, and glycated hemoglobin. RESULTS: Sixteen studies were included, of which 56% showed benefits from supplementation with melatonin in diabetes parameters compared with placebo. Our meta-analysis showed significant results for fasting blood glucose [mean difference: -4.65; 95% CI: -8.06, -1.23; p = < 0.01; I2 = 58%], glycated hemoglobin [mean difference: -0.38; 95% CI: -0.67, -0.10; p = 0.30; I2 = 18%], and insulin resistance [mean difference: -0.58; 95% CI: -1.00, -0.15; p = 0.17; I2 = 35%]. CONCLUSIONS: Our results showed that melatonin supplementation was useful for reducing diabetes parameters when compared to placebo.

Effects of acetaminophen in oxidative stress and neurotoxicity biomarkers of the gastropod Phorcus lineatus.

The growing use of pharmaceutical drugs has become a major environmental issue considering that these substances (or their metabolites) end up inevitably in sewage waters after excretion. In the wild, these chemicals may affect non-target organisms, and their potential toxicity is not sufficiently studied, a reality that is particularly true for marine organisms. Acetaminophen (also known as paracetamol) is known to be toxic in high dosages, namely, by triggering oxidative effects. These effects may be potentiated in marine organisms subjected to contamination resulting from large human settlements along coastal areas. In order to assess how different exposure regimes (acute vs. chronic) may affect aquatic wildlife, individuals of the gastropod species Phorcus lineatus were acutely (96 h) and chronically (28 days) exposed to ecologically relevant concentrations of acetaminophen. The effects were evaluated through the quantification of selected biomarkers-catalase (CAT), glutathione-S-transferase (GST), and cholinesterase (ChE) activities. The results from acute exposure showed no significant effects in all three biomarkers, but chronically exposed organisms showed significant increases in the activities of CAT and ChEs. The data show that P. lineatus triggered a defensive biological response in the presence of acetaminophen, and also show that realistically low levels of acetaminophen can exert adaptive changes with unknown consequences.

A single-dose live-attenuated vaccine prevents Zika virus pregnancy transmission and testis damage.

Zika virus infection during pregnancy can cause congenital abnormities or fetal demise. The persistence of Zika virus in the male reproductive system poses a risk of sexual transmission. Here we demonstrate that live-attenuated Zika virus vaccine candidates containing deletions in the 3' untranslated region of the Zika virus genome (ZIKV-3'UTR-LAV) prevent viral transmission during pregnancy and testis damage in mice, as well as infection of nonhuman primates. After a single-dose vaccination, pregnant mice challenged with Zika virus at embryonic day 6 and evaluated at embryonic day 13 show markedly diminished levels of viral RNA in maternal, placental, and fetal tissues. Vaccinated male mice challenged with Zika virus were protected against testis infection, injury, and oligospermia. A single immunization of rhesus macaques elicited a rapid and robust antibody response, conferring complete protection upon challenge. Furthermore, the ZIKV-3'UTR-LAV vaccine candidates have a desirable safety profile. These results suggest that further development of ZIKV-3'UTR-LAV is warranted for humans.Zika virus infection can result in congenital disorders and cause disease in adults, and there is currently no approved vaccine. Here Shan et al. show that a single dose of a live-attenuated Zika vaccine prevents infection, testis damage and transmission to the fetus during pregnancy in different animal models.

Quality of cervical cancer screening in Brazil: external assessment of the PMAQ.

OBJECTIVE: To examine whether demographic and socioeconomic variables and the variables of the organization of services are associated with the quality of cervical cancer screening. METHODS: This is a survey carried out in the health services of the five Brazilian regions in 2012. The sample consisted of users of basic health units participating in the Program for Improving Access and Quality of the Primary Care. The independent variables analyzed were: socioeconomic characteristics (municipal context), demographic characteristics (user profile), and two domains related to the organization of basic services (work structure and process). The low quality of the screening was assessed from the lack of access, late examination, and lack of guidance. Crude and adjusted analyses by Poisson regression assessed the association between outcomes and independent variables. RESULTS: The values of lack of access, late examination, and lack of guidance were 6.7%, 11.2%, and 19.2%, respectively. Problems of quality were lower according to the increase in Municipal Human Development Index and per capita household income, increasing with population size and municipal coverage of the Family Health Strategy. The Midwest region of the country presented the highest occurrences of low quality outcomes. Indigenous and yellow women had the highest prevalence of outcomes. Women with partner, who received the Bolsa Família Program, and who had paid work had less chances of having lack of access, late examination, and lack of guidance. The appropriate work process in health services decreased the likelihood of low quality in all indicators. CONCLUSIONS: Investments in the work process of health teams, social cash transfer programs, and social conditions of the population are essential to improve the quality of the program of cervical cancer screening in Brazil. OBJETIVO: Analisar se as variáveis demográficas, socioeconômicas e da organização dos serviços estão associadas à qualidade do rastreamento do câncer de colo uterino. MÉTODOS: Inquérito realizado em serviços de saúde das cinco regiões brasileiras em 2012. A amostra foi composta por usuárias de unidades básicas de saúde participantes do Programa de Melhoria do Acesso e da Qualidade na Atenção Básica. As variáveis independentes analisadas foram: características socioeconômicas (contexto municipal); características demográficas (perfil de usuárias); e dois domínios relativos à organização dos serviços básicos (estrutura e processo de trabalho). A baixa qualidade do rastreamento foi avaliada por meio da falta de acesso, atraso na realização do exame e falta de recebimento de orientações. Análises bruta e ajustada por meio de regressão de Poisson avaliaram a associação entre os desfechos e as variáveis independentes. RESULTADOS: A falta de acesso, atraso na realização do exame e falta de recebimento de orientações foram de 6,7%, 11,2% e 19,2%, respectivamente. Os problemas de qualidade foram menores de acordo com o aumento do Índice de Desenvolvimento Humano Municipal e da renda familiar per capita, aumentando com o porte populacional e a cobertura municipal da Estratégia Saúde da Família. A região Centro-Oeste do país apresentou as maiores ocorrências dos desfechos de baixa qualidade. As mulheres de raça indígena e amarela tiveram as maiores prevalências dos desfechos. As mulheres com companheiro, que recebiam o benefício do Programa Bolsa Família e tinham trabalho remunerado tiveram menos falta de acesso, menos atraso na realização do exame e menos falta de recebimento de orientações. O processo de trabalho adequado nos serviços de saúde diminuiu a probabilidade de baixa qualidade em todos os indicadores. CONCLUSÕES: Investimentos em processo de trabalho das equipes de saúde, programas sociais de transferência de renda e condições sociais da população são essenciais para melhorar a qualidade do programa de rastreamento de colo de útero no Brasil.

Quality of cervical cancer screening in Brazil: external assessment of the PMAQ / Qualidade do rastreamento do câncer de colo uterino no Brasil: avaliação externa do PMAQ

ABSTRACT OBJECTIVE To examine whether demographic and socioeconomic variables and the variables of the organization of services are associated with the quality of cervical cancer screening. METHODS This is a survey carried out in the health services of the five Brazilian regions in 2012. The sample consisted of users of basic health units participating in the Program for Improving Access and Quality of the Primary Care. The independent variables analyzed were: socioeconomic characteristics (municipal context), demographic characteristics (user profile), and two domains related to the organization of basic services (work structure and process). The low quality of the screening was assessed from the lack of access, late examination, and lack of guidance. Crude and adjusted analyses by Poisson regression assessed the association between outcomes and independent variables. RESULTS The values of lack of access, late examination, and lack of guidance were 6.7%, 11.2%, and 19.2%, respectively. Problems of quality were lower according to the increase in Municipal Human Development Index and per capita household income, increasing with population size and municipal coverage of the Family Health Strategy. The Midwest region of the country presented the highest occurrences of low quality outcomes. Indigenous and yellow women had the highest prevalence of outcomes. Women with partner, who received the Bolsa Família Program, and who had paid work had less chances of having lack of access, late examination, and lack of guidance. The appropriate work process in health services decreased the likelihood of low quality in all indicators. CONCLUSIONS Investments in the work process of health teams, social cash transfer programs, and social conditions of the population are essential to improve the quality of the program of cervical cancer screening in Brazil.

RESUMO OBJETIVO Analisar se as variáveis demográficas, socioeconômicas e da organização dos serviços estão associadas à qualidade do rastreamento do câncer de colo uterino. MÉTODOS Inquérito realizado em serviços de saúde das cinco regiões brasileiras em 2012. A amostra foi composta por usuárias de unidades básicas de saúde participantes do Programa de Melhoria do Acesso e da Qualidade na Atenção Básica. As variáveis independentes analisadas foram: características socioeconômicas (contexto municipal); características demográficas (perfil de usuárias); e dois domínios relativos à organização dos serviços básicos (estrutura e processo de trabalho). A baixa qualidade do rastreamento foi avaliada por meio da falta de acesso, atraso na realização do exame e falta de recebimento de orientações. Análises bruta e ajustada por meio de regressão de Poisson avaliaram a associação entre os desfechos e as variáveis independentes. RESULTADOS A falta de acesso, atraso na realização do exame e falta de recebimento de orientações foram de 6,7%, 11,2% e 19,2%, respectivamente. Os problemas de qualidade foram menores de acordo com o aumento do Índice de Desenvolvimento Humano Municipal e da renda familiar per capita, aumentando com o porte populacional e a cobertura municipal da Estratégia Saúde da Família. A região Centro-Oeste do país apresentou as maiores ocorrências dos desfechos de baixa qualidade. As mulheres de raça indígena e amarela tiveram as maiores prevalências dos desfechos. As mulheres com companheiro, que recebiam o benefício do Programa Bolsa Família e tinham trabalho remunerado tiveram menos falta de acesso, menos atraso na realização do exame e menos falta de recebimento de orientações. O processo de trabalho adequado nos serviços de saúde diminuiu a probabilidade de baixa qualidade em todos os indicadores. CONCLUSÕES Investimentos em processo de trabalho das equipes de saúde, programas sociais de transferência de renda e condições sociais da população são essenciais para melhorar a qualidade do programa de rastreamento de colo de útero no Brasil.

Lack of access and continuity of adult health care: a national population-based survey.

OBJECTIVE To describe the lack of access and continuity of health care in adults. METHODS A cross-sectional population-based study was performed on a sample of 12,402 adults aged 20 to 59 years in urban areas of 100 municipalities of 23 states in the five Brazilian geopolitical regions. Barriers to the access and continuity of health care and were investigated based on receiving, needing and seeking health care (hospitalization and accident/emergency care in the last 12 months; care provided by a doctor, by other health professional or home care in the last three months). Based on the results obtained by the description of the sample, a projection is provided for adults living in Brazilian urban areas. RESULTS The highest prevalence of lack of access to health services and to provision of care by health professionals was for hospitalization (3.0%), whilst the lowest prevalence was for care provided by a doctor (1.1%). The lack of access to care provided by other health professionals was 2.0%; to accident and emergency services, 2.1%; and to home care, 2.9%. As for prevalences, the greatest absolute lack of access occurred in emergency care (more than 360,000 adults). The main reasons were structural and organizational problems, such as unavailability of hospital beds, of health professionals, of appointments for the type of care needed and charges made for care. CONCLUSIONS The universal right to health care in Brazil has not yet been achieved. These projections can help health care management in scaling the efforts needed to overcome this problem, such as expanding the infrastructure of health services and the workforce.

Lack of access and continuity of adult health care: a national population-based survey / Falta de acesso e de continuidade da atenção à saúde em adultos: inquérito nacional

OBJECTIVE To describe the lack of access and continuity of health care in adults.METHODS A cross-sectional population-based study was performed on a sample of 12,402 adults aged 20 to 59 years in urban areas of 100 municipalities of 23 states in the five Brazilian geopolitical regions. Barriers to the access and continuity of health care and were investigated based on receiving, needing and seeking health care (hospitalization and accident/emergency care in the last 12 months; care provided by a doctor, by other health professional or home care in the last three months). Based on the results obtained by the description of the sample, a projection is provided for adults living in Brazilian urban areas.RESULTS The highest prevalence of lack of access to health services and to provision of care by health professionals was for hospitalization (3.0%), whilst the lowest prevalence was for care provided by a doctor (1.1%). The lack of access to care provided by other health professionals was 2.0%; to accident and emergency services, 2.1%; and to home care, 2.9%. As for prevalences, the greatest absolute lack of access occurred in emergency care (more than 360,000 adults). The main reasons were structural and organizational problems, such as unavailability of hospital beds, of health professionals, of appointments for the type of care needed and charges made for care.CONCLUSIONS The universal right to health care in Brazil has not yet been achieved. These projections can help health care management in scaling the efforts needed to overcome this problem, such as expanding the infrastructure of health services and the workforce.

OBJETIVO Descrever a falta de acesso e de continuidade da atenção à saúde de adultos.MÉTODOS Estudo transversal de base populacional com 12.402 adultos entre 20 e 59 anos, residentes em áreas urbanas de 100 municípios de 23 estados brasileiros, nas cinco regiões geopolíticas. Investigaram-se as barreiras no acesso e na continuidade da atenção a partir do recebimento, necessidade e busca de algum atendimento de saúde (internação hospitalar e pronto-socorro nos 12 meses prévios ao estudo; atendimento médico, de outro profissional de saúde e domiciliar nos três meses prévios). A partir dos resultados obtidos na descrição da amostra, apresenta-se uma projeção para os adultos residentes em áreas urbanas no território nacional.RESULTADOS A prevalência de falta de acesso aos serviços e aos atendimentos com profissionais de saúde mais expressiva foi de 3,0%, para internação hospitalar, enquanto a menor prevalência foi para atendimento médico (1,1%). A falta de acesso para o atendimento com outro profissional de saúde foi de 2,0%; em pronto-socorro, 2,1%; e domiciliar, 2,9%. Quanto às prevalências, o maior número absoluto de falta de acesso foi para atendimentos de urgência (mais de 360.000 adultos). Os principais motivos foram problemas estruturais e organizacionais, como falta de leito, de profissionais, de ficha/vaga do tipo de atendimento necessário e cobrança pelo atendimento.CONCLUSÕES O direito universal à saúde no Brasil ainda não foi alcançado. As projeções podem apoiar a gestão no dimensionamento de esforços dirigidos ao seu enfrentamento, como a ampliação da estrutura física dos serviços e da força de trabalho.

Padrões de utilização de atendimento médico-ambulatorial no Brasil entre usuários do Sistema Único de Saúde, da saúde suplementar e de serviços privados / Patterns in the use of outpatient care in Brazil by patients treated through the Brazilian Unified National Health System, private health insurance, and out-of-pocket medical care / Los patrones de uso de atención médica ambulatoria en Brasil entre el Sistema Único de Salud, la salud y los servicios privados suplementarios

Indicadores de oferta, acesso e utilização são úteis para caracterizar os serviços, planejar ações e organizar a demanda. Este estudo descreve padrões de utilização de atendimento médico-ambulatorial e associação com variáveis sociodemográficas, de morbidade, porte do município e região, de acordo com a natureza jurídica do serviço. Trata-se de um estudo transversal de base populacional com 12.402 adultos brasileiros entre 20 e 59 anos, residentes nas áreas urbanas de 100 municípios nas cinco regiões brasileiras. A prevalência de atendimento médico-ambulatorial nos três meses anteriores à entrevista foi de 34,6%. O Sistema Único de Saúde foi responsável por mais da metade (53,6%) dos atendimentos, algum convênio de saúde foi utilizado por 34% da amostra e os serviços privados por 12,4%, independentemente da região, do porte populacional e da morbidade referida. Os padrões de utilização de serviços de saúde continuam socialmente determinados, resultando da oferta, das características sociodemográficas e do perfil de saúde dos usuários.

Indicators of supply, access, and use of healthcare are helpful for characterizing services, planning activities, and organizing demand. This study describes patterns of use of outpatient care and the associations with demographic and socioeconomic factors, morbidity, population size of the municipality and region, and administrative and financial classification of the provider. This was a population-based cross-sectional study with a sample of 12,402 Brazilian adults from 20 to 59 years of age living in urban areas of 100 municipalities from five regions. Prevalence of outpatient care in the three months prior to the interview was 34.6%. The Brazilian Unified National Health System (SUS) accounted for more than half (53.6%) of the cases, health insurance was used by 34% of the sample, and out-of-pocket services 12.4%, regardless of region, population size, and morbidity profile. Patterns of use of health services remain socially determined, resulting from the supply, demographic and socioeconomic characteristics, and health profile of users.

Indicadores de la oferta, acceso y uso son útiles para caracterizar los servicios, las actividades de planificación y organización de la demanda. El estudio describe los patrones de uso de tratamiento ambulatorio y su asociación con variables sociodemográficas, morbilidad, tamaño del municipio y de la región, de acuerdo con la naturaleza jurídica del servicio. Se trata de una base poblacional transversal 12.402 adultos brasileños, entre 20 y 59 años, que viven en zonas urbanas de 100 municipios en cinco regiones. La prevalencia de tratamiento ambulatorio en los tres meses anteriores a la entrevista fue del 34,6%. El Sistema Único de Salud fue responsable de más de la mitad (53,6%) de los casos, un plan de salud fue utilizado por el 34% de la muestra y los servicios privados representaron el 12,4%, con independencia de la región, el tamaño de la población y la morbilidad anteriormente. Los patrones de uso de los servicios de salud siguen siendo socialmente determinados, lo que resulta en la oferta, el perfil sociodemográfico y la salud de los usuarios.

[Patterns in the use of outpatient care in Brazil by patients treated through the Brazilian Unified National Health System, private health insurance, and out-of-pocket medical care]. / Padrões de utilização de atendimento médico-ambulatorial no Brasil entre usuários do Sistema Único de Saúde, da saúde suplementar e de serviços privados.

Indicators of supply, access, and use of healthcare are helpful for characterizing services, planning activities, and organizing demand. This study describes patterns of use of outpatient care and the associations with demographic and socioeconomic factors, morbidity, population size of the municipality and region, and administrative and financial classification of the provider. This was a population-based cross-sectional study with a sample of 12,402 Brazilian adults from 20 to 59 years of age living in urban areas of 100 municipalities from five regions. Prevalence of outpatient care in the three months prior to the interview was 34.6%. The Brazilian Unified National Health System (SUS) accounted for more than half (53.6%) of the cases, health insurance was used by 34% of the sample, and out-of-pocket services 12.4%, regardless of region, population size, and morbidity profile. Patterns of use of health services remain socially determined, resulting from the supply, demographic and socioeconomic characteristics, and health profile of users.

Antioxidant response and metal accumulation in tissues of Iberian green frogs (Pelophylax perezi) inhabiting a deactivated uranium mine.

Human mining activities tend often to generate greatly impacted areas which remain contaminated for long periods of time, giving rise to extreme habitats. Mining sites are usually characterized for the production of metal rich effluents with very low pH. In this work we analyzed physical and chemical parameters of water from a deactivated uranium mine pond (M) and a reference site (REF) as well as their metal content. Furthermore, we determined and compared metal accumulation in liver, kidney, bones, muscle and skin of Pelophylax perezi from REF with P. perezi from M. We also determined the enzymatic activities of glutathione-S-transferases (GSTs), catalase (CAT), glutathione reductase (Gred), and glutathione peroxidase (GPx; both selenium-dependent and selenium-independent) in liver, kidney, lung and heart. Additionally, lipoperoxidation (LPO) was also assessed in the same tissues via thiobarbituric acid reactive substances (TBARS) assay and lactate dehydrogenase (LDH) activity was determined in muscle. Our results revealed that the majority of metals were in higher concentrations in tissues of organisms from M. This trend was especially evident for U whose content reached a difference of 1350 fold between REF and M organisms. None of the organs tested for antioxidant defenses revealed LPO, nonetheless, with exception for liver, all organs from the M frogs presented increased total GPx activity and selenium-dependent GPx. However, this response was significant only for the lung, probably as a consequence of the significant inhibition of CAT upstream and to cope with the subsequent increase in H(2)O(2). Lungs were the organs displaying greater responsiveness of the anti-oxidant stress system in frogs from the uranium mine area.