What determines transfer of carbon from plants to mycorrhizal fungi?

Biological Market Models are common evolutionary frameworks to understand the maintenance of mutualism in mycorrhizas. 'Surplus C' hypotheses provide an alternative framework where stoichiometry and source-sink dynamics govern mycorrhizal function. A critical difference between these frameworks is whether carbon transfer from plants is regulated by nutrient transfer from fungi or through source-sink dynamics. In this review, we: provide a historical perspective; summarize studies that asked whether plants transfer more carbon to fungi that transfer more nutrients; conduct a meta-analysis to assess whether mycorrhizal plant growth suppressions are related to carbon transfer; and review literature on cellular mechanisms for carbon transfer. In sum, current knowledge does not indicate that carbon transfer from plants is directly regulated by nutrient delivery from fungi. Further, mycorrhizal plant growth responses were linked to nutrient uptake rather than carbon transfer. These findings are more consistent with 'Surplus C' hypotheses than Biological Market Models. However, we also identify research gaps, and future research may uncover a mechanism directly linking carbon and nutrient transfer. Until then, we urge caution when applying economic terminology to describe mycorrhizas. We present a synthesis of ideas, consider knowledge gaps, and suggest experiments to advance the field.

Assessment of the COVID-19 impact on the Brazilian Unified Health System (SUS) financing: an analysis of the financing dynamics of 2020 and 2021.

BACKGROUND: After the establishment of the public health emergency of international concern in 2020, health systems worldwide and in Brazil observed the need to apply more extraordinary logistical efforts and possibly resources to combat the imminent pandemic. METHODS: Using the historical series of public expenditures of the National Health Fund (FNS), 2015 to 2021, the number of confirmed cases of COVID-19, and a seasonal ARIMAX model, we sought to assess how the increase in the new virus infections affected the systematic financing of the SUS in Brazil. RESULTS: There were signs of seasonality and an increasing trend in the expenditure variable, which in practical terms, only indicated that the resource contributions followed an increasing trajectory already underway before the advent of the pandemic. The 1% increase in COVID-19 cases, with a one-month lag, contributes to the 0.062% increase in the variation in FNS expenditures but a decrease of 0.058% with a two-month lag. CONCLUSION: The tests showed no evidence to confirm a positive shift on FNS spending growth trajectory due to the increase of COVID-19 cases, only observing a significant increase one month after the occurrence of COVID cases, probably due to their worsening after this period, which was followed by a similar and comparable decrease in percentage of growth in the following month.

Chemotherapy-induced acute kidney injury: epidemiology, pathophysiology, and therapeutic approaches.

Despite significant advancements in oncology, conventional chemotherapy remains the primary treatment for diverse malignancies. Acute kidney injury (AKI) stands out as one of the most prevalent and severe adverse effects associated with these cytotoxic agents. While platinum compounds are well-known for their nephrotoxic potential, other drugs including antimetabolites, alkylating agents, and antitumor antibiotics are also associated. The onset of AKI poses substantial risks, including heightened morbidity and mortality rates, prolonged hospital stays, treatment interruptions, and the need for renal replacement therapy, all of which impede optimal patient care. Various proactive measures, such as aggressive hydration and diuresis, have been identified as potential strategies to mitigate AKI; however, preventing its occurrence during chemotherapy remains challenging. Additionally, several factors, including intravascular volume depletion, sepsis, exposure to other nephrotoxic agents, tumor lysis syndrome, and direct damage from cancer's pathophysiology, frequently contribute to or exacerbate kidney injury. This article aims to comprehensively review the epidemiology, mechanisms of injury, diagnosis, treatment options, and prevention strategies for AKI induced by conventional chemotherapy.

Attitudes towards the sexuality of adults with intellectual disabilities: Family, staff, community and student perspectives.

Background: The sexual expression of adults with intellectual disabilities can be hindered by negative attitudes towards their sexuality. This study aims to examine current attitudes of staff, family, community and students towards the sexuality of adults with intellectual disabilities and how sociodemographic variables may influence these attitudes. Methods: 305 participants completed an online questionnaire, including the ASEXID scale. Results: Scores were highest for the normalising attitude and lowest for the negative attitude, with intermediate scores for the paternalistic attitude. Staff and university students exhibited a more normalising attitude than families and community. Community participants exhibited a more negative attitude than staff and students. Older age was associated with less normalising and more paternalistic attitudes. Being male with a more negative attitude. Discussion: These findings should be taken into account by professionals. Intermediate scores on the paternalistic attitude may mediate difficulties in supporting adults with intellectual disabilities in their sexuality.

The relationship of stereotypes, social distance and sexuality knowledge with attitudes towards sexuality of people with mild intellectual disabilities.

BACKGROUND: The present study examines the relationship between stereotypical beliefs about people with intellectual disabilities, desire for social distance, and general knowledge about human sexuality with attitudes towards the sexuality of adults with mild intellectual disabilities. METHOD: Two hundred fifty participants from staff, family and community samples completed an online set of questionnaires. RESULTS: Higher agreement with stereotypical beliefs and lower sexual knowledge were associated with less normalising and more paternalistic attitudes towards the sexuality of adults with mild intellectual disabilities. Higher agreement with stereotypical beliefs was also associated with more negative attitudes. On the other hand, willingness to interact with these adults was associated with more normalising and less paternalistic attitudes. CONCLUSIONS: Interventions that aim to support adults with intellectual disabilities in relation to their sexuality should also address the perceptions of their support network towards them as individuals with disabilities, as well as their knowledge about sexuality.

Influence of acute heat shock on antioxidant defense of tropical fish, Psalidodon bifasciatus.

Psalidodon bifasciatus is a fish species sensitive to physical and chemical changes in water. It serves as a good bioindicator of temperature variations and is utilized in environmental monitoring studies in Brazilian rivers. The objective of this study was to evaluate antioxidant defense biomarkers in the heart, brain, and muscle of P. bifasciatus exposed to a 10 °C thermal increase. P. bifasciatus were collected and divided into a control group (21 °C) and groups subjected to thermal shock (31 °C) for periods of 2, 6, 12, 24, and 48h. Two-way ANOVA indicated that a 10 °C temperature increase caused oxidative stress in P. bifasciatus. This was evidenced by altered levels of lipid peroxidation (LPO), carbonylated proteins (PCO), and glutathione peroxidase (GPx) in the heart, catalase (CAT) and LPO in the brain, and LPO in the muscle. Principal component analysis (PCA) and integrated biomarker response (IBR) analysis indicated that, compared to the heart and muscle, the brain exhibited a greater activation of the antioxidant response. Sensitivity analysis indicated that the muscle was the most sensitive organ, followed by the brain and heart. Our results indicate that the stress response is tissue-specific through the activation of distinct mechanisms. These responses may be associated with the tissue's function as well as its energy demand. As expected, P. bifasciatus showed changes in response to thermal stress, with the brain showing the greatest alteration in antioxidant defenses and the muscle being the most sensitive tissue.

Catalytic conversion of residual raw material into biodiesel using a superior magnetic solid acid catalyst based on Zn-Fe ferrite: thermodynamic and kinetic studies.

This study investigates the potential and applicability of a novel solid magnetic catalyst constructed by incorporating molybdenum oxide (MoO3) into zinc ferrite (ZnFe2O4) to biodiesel production using Waste Frying Oil (WFO) as the residual raw material. The molybdenum amounts (5, 15, 25, 35 and 45%) present in the catalyst were studied and the catalyst demonstrated great characteristics and high acid properties, as well as superior magnetic and catalytic attributes. The one variable at time (OVAT) optimization method revealed that the application of the MoO3/ZnFe2O4 catalyst resulted in obtaining a biodiesel with 97.6% ± 0.727 conversion to fatty acid methyl esters (FAME) under the following optimized reaction conditions: temperature of 165 °C, methanol : WFO molar ratio of 40 : 1, catalyst amount of 6 wt% and reaction time of 3 h. In addition, the catalyst showed high reusability after six reaction cycles, with conversion to esters above 90%. Besides, the activation energy (E a) calculated in the kinetic study was 25.3 kJ mol-1. Moreover, the properties of the synthesized biodiesel met the standards set by the ASTM D6751 and EN 14214, which indicates the high MoO3/ZnFe2O4 potential for industrial application with low energy consumption as well as minimal negative environmental impact.

Long-term Comparative Evaluation of Weight Loss and Complications of Banded and Non-banded Roux-en-Y Gastric Bypass.

PURPOSE: The use of a nonadjustable silicone band around the gastric pouch of Roux-en-Y gastric bypass (RYGB) to reduce the recurrence of obesity is still being debated in the literature. The primary objective of this study was to evaluate banded and non-banded RYGB regarding % total weight loss (%TWL) and complications up to 10 years postoperatively and regarding the removal rate of the silicone band. MATERIAL AND METHODS: A retrospective study of the medical records of all patients submitted to banded and non-banded RYGB between 2000 and 2020 was conducted. Clinical data (age, gender, weight, body mass index-BMI, comorbidities, %TWL, and the prevalence of vomiting) and laboratory data (hemoglobin, serum iron, albumin, and vitamin B12) were obtained preoperatively and at 6 months, 1, 2, 3, 5, 7, and 10 years for both groups and at 12, 15, and 20 years after banded RYGB. RESULTS: In total, 858 patients underwent RYGB: 409 underwent banded RYGB and 449 underwent non-banded RYGB. In the preoperative period, banded RYGB patients were heavier and had higher rates of hypertension and dyslipidemia. The %TWL was higher in the banded RYGB group up to 7 years. The prevalence of vomiting is much higher in this group, which also had lower laboratory test values. Of the banded RYGB patients, 9.53% had to have the silicone ring removed after presenting complications. CONCLUSION: Banded RYGB promotes significantly higher rates of TWL at the expense of a higher frequency of food intolerance and vomiting.

Physiological strategies of acute thermal conditions of Rhamdia voulezi collected in the Iguaçu river watershed, Paraná, Brazil: biochemical markers of metabolic and oxidative stress.

Thermal pollution creates substantial challenges that alter energy demand and produce reactive oxygen species that damage fish DNA, proteins, and lipids. Rhamdia voulezi is a species of fish native to the Iguaçu river, Paraná, Brazil, that does not have scientific records of minimum (CTmin) and maximum (CTmax) temperatures required for survival. As it is a top predator species in the food chain and lives at temperatures below 22 °C, the loss of the species can cause functional problems in controlling the ecosystem and energy flow. The study evaluated the tissue metabolism of the brain, heart, and muscle of R. voulezi (n = 72) subjected to acute thermal stress of 31 °C for 2, 6, 12, 24, and 96 h after acclimatization to 21 °C. The biochemical markers SOD, GPx, MDH, HK, and CK of the brain, PCO of the heart and CAT, glycogen, G6PDH, and ALT of muscle were significant. PCA, IBR, thermal sensitive, and condition factor suggested that R. voulezi has different physiological strategies for acclimatization to 31 °C to mobilize and sustain the metabolic needs of oxygenation and energy allocation/utilization for tissue ATP production.

Poverty-Food Insecurity Nexus in the Post-Construction Context of a Large Hydropower Dam in the Brazilian Amazon.

Within the 2030 Sustainable Development Agenda, large hydropower dams are positioned as a sustainable energy source, notwithstanding their adverse impacts on societies and ecosystems. This study contributed to ongoing discussions about the persistence of critical social issues, even after the investments of large amounts of resources in areas impacted by the construction of large hydropower dams. Our study focused on food insecurity and evaluated this issue in the city of Altamira in the Brazilian Amazon, which has been profoundly socially and economically impacted by the construction, between 2011 and 2015, of Brazil's second-largest dam, namely, Belo Monte. A survey in Altamira city featured a 500-household random sample. Structural equation modeling showed conditioning factors of 60% of the population experiencing varying food insecurity degrees. Poverty, female-led households, lower education, youth, and unemployment were strongly linked to higher food insecurity. Crowded, officially impacted, and resettled households also faced heightened food insecurity. Our findings underscore the food insecurity conditions in the region impacted by the Belo Monte dam, emphasizing the need to take into account this crucial issue while planning and implementing hydropower dams.

Impact of SumiLarv® 2MR on Aedes aegypti larvae: a multicenter study in Brazil.

BACKGROUND: Aedes aegypti is associated with dengue, Zika, and chikungunya transmission. These arboviruses are responsible for national outbreaks with severe public health implications. Vector control is one of the tools used to prevent mosquito proliferation, and SumiLarv® 2MR is an alternative commercial product based on pyriproxyfen for larval/pupal control. In this study, the residual effectiveness of SumiLarv® 2MR in different regions of Brazil was evaluated in simulated field conditions. METHODS: We conducted a multicenter study across four Brazilian states-Amapá, Pernambuco, Rio de Janeiro, and São Paulo-given the importance to the country's climatic variances in the north, northeast, and southeast regions and their influence on product efficiency. The populations of Ae. aegypti from each location were held in an insectary. Third-instar larvae (L3) were added every 2 weeks to water containers with SumiLarv® 2MR discs in 250-, 500- and 1000-l containers in Amapá and Rio de Janeiro, and 100-l containers in Pernambuco and São Paulo, using concentrations of 0.04, 0.08, and 0.16 mg/l. RESULTS: Adult emergence inhibition over 420 days was observed in all tests conducted at a concentration of 0.16 mg/l; inhibition for 308-420 days was observed for 0.08 mg/l, and 224-420 days for 0.04 mg/l. CONCLUSIONS: Sumilarv® 2MR residual activity demonstrated in this study suggests that this new pyriproxyfen formulation is a promising alternative for Aedes control, regardless of climatic variations and ideal concentration, since the SumiLarv® 2MR showed adult emergence inhibition of over 80% and residual activity greater than 6 months, a period longer than that recommended by the Ministry of Health of Brazil between product re-application in larval breeding sites.

Assessing physiological responses and oxidative stress effects in Rhamdia voulezi exposed to high temperatures.

Exposure to high temperatures induces changes in fish respiration, resulting in an increased production of reactive oxygen species. This, in turn, affects the enzymatic and non-enzymatic components of antioxidant defenses, which are essential for mitigating cellular stress. Rhamdia voulezi, an economically important fish species endemic to Brazil's Iguaçu River, served as the subject of our study. Our goal was to assess enzymatic antioxidant biomarkers (superoxide dismutase, catalase, glutathione peroxidase, glutathione S-transferase, glutathione reductase, glucose-6-phosphate dehydrogenase), non-protein thiol levels (reduced glutathione), and markers of oxidative damage (lipoperoxidation and carbonylation) in the liver, gills, and kidneys of R. voulezi after acute exposure to high temperatures (31°C) for 2, 6, 12, 24, and 96 h. Control groups were maintained at 21°C. Our findings revealed that the liver exhibited increased superoxide dismutase levels up to 12 h and elevated glutathione S-transferase levels at 12 and 96 h at 31°C. In the gills, superoxide dismutase levels increased up to 24 h, along with increased lipoperoxidation at 2, 6, 12, and 96 h of exposure to high temperatures. The kidneys responded to heat stress at 12 h, with an increase in superoxide dismutase and catalase activity, and lipid peroxidation was observed at 2 and 6 h at 31°C. The three tissues evaluated responded differently to heat stress, with the liver demonstrating greater physiological adjustment to high temperatures. The intricate interplay of various antioxidant defense biomarkers and oxidative damage suggests the presence of oxidative stress in R. voulezi when exposed to high temperatures.

Social networking website increases efficacy and engagement in a distance learning course about oral lesions.

PURPOSE: Distance learning appears to be an attractive approach to continuing education courses, but one barrier is maintaining learner engagement throughout the course. The primary aim of this research was to evaluate the operational efficacy of a private Facebook™ group (FG) in serving as a support mechanism for distance learning courses, and its impact on three fundamental dimensions: the attrition rates of participants who did not complete the course (commonly referred to as dropout rates), the rates of course completion and approval, and the overall performance of the participants. METHODS: The participants of this quasi-experimental study comprised 159 dental students and 565 dentists enrolled in an e-learning course on oral mucosal lesion diagnosis. Prior to the initiation of the course, all participants were provided with the option to join a private FG. Within this group, moderators shared motivational messages and provided reminders concerning deadlines. Moreover, participants had the opportunity to engage in interactive discussions pertaining to topics related to the course. The course itself followed a self-guided format, employing the flipped-classroom methodology, spanning a total of 50 instructional hours. In order to assess the effectiveness of the course, participants were presented with photographs illustrating 30 oral lesions and were asked to propose diagnostic hypotheses both before and after the educational intervention (pre-tests and post-tests). RESULTS: Dentists who participated in the FG exhibited a significantly lower rate of discontinuation. As for dental students, their involvement in the group was positively associated with better performance, as determined by the percentage of accurate diagnostic hypotheses (a minimum of 70% correct responses was required for their approval in the course). CONCLUSIONS: Facebook™ demonstrates promise as a supplementary pedagogical tool in distance education courses. The interactive nature of the platform has the potential to alleviate the inherent challenges of remote learning.

Influência dos indicadores socioeconômicos na distribuição dos casos suspeitos de dengue no município de São Carlos-SP / Influence of socioeconomic indicators on the distribution of suspected dengue

Resumo O estabelecimento definitivo do Aedes aegypti nas Américas está associado às mudanças ambientais, urbanização desorganizada, ausência de água e saneamento básico e deslocamentos populacionais, definindo, assim, a trajetória da doença. O objetivo deste estudo foi analisar a distribuição espacial dos casos suspeitos de dengue e a relação com indicadores socioeconômicos no município de São Carlos-SP. Trata-se de estudo ecológico, realizado nesse município, em que foram utilizados dados secundários do Sistema de Informação sobre Agravos de Notificação no período de 2016 a 2017 e do Instituto Brasileiro de Geografia e Estatística do Censo Demográfico de 2010. Os dados foram analisados por meio da Análise de Componentes Principais pelo software Statistica 12.0 e os mapas temáticos foram gerados pelo software Arcgis versão 10.5. Os resultados mostraram elevadas taxas de casos suspeitos de dengue em áreas de ponderação com condições sociais adequadas e taxas reduzidas em áreas de ponderação com iniquidades sociais. Concluiu-se que o perfil de casos suspeitos por dengue na população de São Carlos não está relacionado a baixos indicadores socioeconômicos, uma vez que a dinâmica e a mobilidade populacional relacionadas ao elevado fluxo de universitários podem influenciar no padrão de distribuição espacial da doença.

Abstract The definitive establishment of Aedes aegypti in the Americas is associated with environmental changes, disorganized urbanization, lack of water and basic sanitation and population displacement, thus defining the trajectory of the disease. The aim of this study was to analyze the spatial distribution of the dengue suspected cases and understand its correlation with the socioeconomic indicators in the city of São Carlos (SP). This is an ecological study, carried out at the São Carlos (SP). Secondary data from the Information System on Notifiable Diseases in the period from 2016 to 2017 and from the Brazilian Institute of Geography and Statistics of the 2010 Demographic Census were used. The data were analyzed using Principal Component Analysis (ACP) by the software Statistica 12.0 and the thematic maps were generated by the software Arcgis version 10.5. The results showed high rates of suspected dengue cases in areas with adequate social conditions and reduced rates in areas with worst social condition. It was concluded that the outline of suspected dengue cases in the population of São Carlos (SP) is not related to low socioeconomic indicators, once the population dynamics and mobility related to the high flow of university students can influence the pattern of spatial distribution of the disease.

Efeitos do lockdown na incidência da COVID-19 na fase de emergência sanitária da pandemia / Effects of lockdown on COVID-19 incidence in the health emergency phase of the pandemic

RESUMO Objetivo avaliar os efeitos do lockdown na incidência da COVID-19 na fase de emergência sanitária da pandemia. Métodos trata-se de um estudo ecológico transversal. Os dados foram coletados nas páginas da Fundação Sistema Estadual de Análise de Dados e da Prefeitura Municipal de Araraquara. Para analisar a incidência da COVID-19 foram considerados os casos notificados no referido município. Para comparar os períodos em relação aos casos diários, foi utilizado o modelo de regressão com distribuição binomial-negativa com função de ligação logarítmica. Resultados para todas as faixas etárias, com exceção de menores de 20 anos, verificou-se diferença estatística nos coeficientes de incidência. Para o sexo feminino o declínio na incidência da doença foi mais expressivo. Considerando ambos os sexos e todas as faixas etárias, observou-se uma redução de 49% na incidência de casos. Conclusão houve uma redução significativa na incidência da doença considerando a população geral do município. Contribuições para a prática: a disponibilidade e adoção de medidas tradicionais de saúde pública, como o lockdown, mostraram-se essenciais para reduzir casos e óbitos de doenças de vírus respiratórios emergentes sem tratamento e vacina.

ABSTRACT Objective to assess the effects of lockdown on the incidence of COVID-19 during the health emergency phase of the pandemic. Methods this is a cross-sectional ecological study. Data was collected from the websites of the State Data Analysis System Foundation and Araraquara City Hall. To analyze the incidence of COVID-19, cases reported in the municipality were considered. A regression model with a negative binomial distribution and a logarithmic link function was used to compare the periods in terms of daily cases. Results for all age groups except those under 20, there was a statistical difference in the incidence coefficients. For females, the decline in the incidence of the disease was more significant. Considering both sexes and all age groups, there was a 49% reduction in the incidence of cases. Conclusion there was a significant reduction in the incidence of the disease in the general population of the municipality. Contributions to practice: the availability and adoption of traditional public health measures, such as lockdown, proved essential to reducing cases and deaths from emerging respiratory virus diseases without treatment or vaccine.

Conhecimento de equipes de enfermagem quanto às manifestações clínicas e grupo de risco para COVID-19 / Knowledge of nursing teams regarding clinical manifestations and risk group for COVID-19 / Conocimiento de los equipos de enfermería sobre manifestaciones clínicas y grupos de riesgo para COVID-19

Objetivo: comparar o conhecimento de enfermeiros e técnicos de enfermagem atutentes em Unidades de Pronto Atendimento quanto ao reconhecimento de manifestações clínicas e grupos de risco para o desenvolvimento da forma grave da COVID-19. Método: estudo descritivo, realizado com 53 profissionais de três unidades de pronto atendimento, com coleta de dados realizada por meio de questionário autorrespondido. Dados analisados por meio de estatística descritiva e inferencial (testes t-student e qui-quadrado). Protocolo de pesquisa aprovado pelo Comitê de Ética em Pesquisa da instituição. Resultados: destaca-se uma associação entre a citação de manifestações clínicas como náuseas e vômitos, grupos de risco e a função, enfermeiros ou técnicos de enfermagem (p<0,05) e o nível de formação, ou seja, os enfermeiros relataram com maior frequência a presença desses sintomas que os técnicos de enfermagem. Conclusão: os profissionais de enfermagem apresentam conhecimento quanto a sintomatologia e grupos de risco, ainda que haja diferença entre o nível profissional(AU)

Objective: to compare the knowledge of nurses and nursing technicians working in Emergency Care Units regarding the recognition of clinical manifestations and risk groups for the development of the severe form of COVID-19. Method: descriptive study, carried out with 53 professionals from three emergency care units, with data collection carried out through a self-answered questionnaire. Data analyzed using descriptive and inferential statistics (t-student and chi-square tests). Research protocol approved by the institution's Research Ethics Committee. Results: an association stands out between the mention of clinical manifestations such as nausea and vomiting, risk groups and the role, nurses or nursing technicians (p<0.05) and the level of training, that is, nurses reported with the presence of these symptoms was more frequent than nursing technicians. Conclusion: nursing professionals have knowledge regarding symptoms and risk groups, even if there is a difference between the professional level(AU)

Objetivo: comparar los conocimientos de enfermeros y técnicos de enfermería que trabajan en Unidades de Atención de Emergencia sobre el reconocimiento de manifestaciones clínicas y grupos de riesgo para el desarrollo de la forma grave de COVID-19. Método: estudio descriptivo, realizado con 53 profesionales de tres unidades de atención de emergencia, con recolección de datos realizada a través de un cuestionario auto respondido. Datos analizados mediante estadística descriptiva e inferencial (pruebas t de Student y chi-cuadrado). Protocolo de investigación aprobado por el Comité de Ética en Investigación de la institución. Resultados: se destaca asociación entre la mención de manifestaciones clínicas como náuseas y vómitos, grupos de riesgo y el rol, enfermeros o técnicos de enfermería (p<0,05) y el nivel de formación, es decir, los enfermeros reportaron la presencia de estos síntomas. fue más frecuente que los técnicos de enfermería. Conclusión: los profesionales de enfermería tienen conocimientos sobre síntomas y grupos de riesgo, aunque exista diferencia entre el nivel profesional(AU)

Organização e assistência da atenção primária à saúde no enfrentamento da COVID-19 / Organization and assistance of primary health care facing COVID-19 / Organización y asistencia de la atención primaria de salud en el enfrentamiento al COVID-19

Objetivo: analisar a organização e assistência dos serviços da Atenção Primária à Saúde no enfrentamento da COVID-19. Método: estudo transversal realizado com 49 profissionais da saúde de unidades básicas de saúde e estratégia de saúde da família no município de São Carlos. Os dados foram coletados por meio de questionário auto respondido no período de maio de 2021 a fevereiro de 2022. As associações foram analisadas por teste qui-quadrado e estimadas as razões de prevalência. O protocolo de pesquisa foi aprovado pelo Comite de Ética em Pesquisa. Resultados: a identificação de sinais e sintomas do paciente, orientações sobre as medidas de prevenção e verificação da disponibilidade de leitos em hospitais de referência, foram variáveis que se apresentaram diferentes entre os serviços de saúde. Conclusão: a APS exerce papel central no enfrentamento da pandemia, com necessidade de os gestores identificarem as fragilidades e direcionarem ações de educação permanente diante de novos cenários(AU)

Objective: to analyze the organization and assistance of Primary Health Care services facing COVID-19. Method: cross-sectional study carried out with 49 health professionals from basic health units and family health strategy in the city of São Carlos. Data were collected through a self-answered questionnaire from May 2021 to February 2022. Associations were analyzed using the chi-square test and prevalence ratios were estimated. The research protocol was approved by the Research Ethics Committee. Results: identification of the patient's signs and symptoms, guidance on prevention measures and checking the availability of beds in reference hospitals were variables that differed between health services. Conclusion: Primary Health Care services play a central role facing COVID-19 pandemic, with managers needing to identify weaknesses and direct ongoing education actions in the face of new scenarios(AU)

Objetivo: analizar la organización y asistencia de los servicios de Atención Primaria de Salud en el combate al COVID-19. Método: estudio transversal realizado con 49 profesionales de la salud de unidades básicas de salud y estrategia de salud de la familia de la ciudad de São Carlos. Los datos se recolectaron a través de un cuestionario de auto respuesta desde mayo de 2021 hasta febrero de 2022. Se analizaron las asociaciones mediante la prueba de chi-cuadrado y se estimaron las razones de prevalencia. El protocolo de investigación lo aprobó el Comité de Ética en Investigación. Resultados: la identificación de los signos y síntomas del paciente, las orientaciones sobre medidas de prevención y la verificación de la disponibilidad de camas en los hospitales de referencia fueron variables que difirieron entre los servicios de salud. Conclusión: La APS juega un papel central en el enfrentamiento a la pandemia, siendo necesario que los gestores identifiquen debilidades y orienten acciones educativas continuas ante nuevos escenarios(AU)

Perfil epidemiológico e tendência temporal da incidência de hiv/aids em adultos no brasil / Epidemiological profile and time trend of hiv/aids incidence in adults in brazil

Introdução: HIV/AIDs é um problema de saúde pública com mudanças epidemiológicas mundiais. Objetivo: Analisar a tendência dos coeficientes de incidência de Aids e possíveis pontos de mudanças em adultos de 20 a 59 anos no Brasil, por região, no período de 2010 a 2017. Método: Estudo ecológico de série temporal e local, com dados referentes aos anos de 2010 a 2017, coletados no Departamento de Informática do Sistema Único de Saúde, sobre as doenças referidas, e os dados populacionais no site do Instituto Brasileiro de Geografia e Estatística. Os casos foram divididos por regiões do Brasil, além de sexo e faixa etária. Para analisar as mudanças nas incidências anuais por sexo e faixa etária foi utilizado um modelo de regressão do Joinpoint. Resultados: A Aids apresentou tendência crescente entre indivíduos do sexo masculino de 20 a 29 anos nas regiões Centro-Oeste, Nordeste e Norte e se manteve, em sua maioria, estacionária nas demais faixas-etárias em ambos os sexos. Conclusão: Nota-se a necessidade de fortalecer a equipe de Atenção Primária à Saúde e seu papel na prevenção da Aids bem como a ampliação dos serviços especializados nas demais regiões, além do Sudeste e do Sul. Ações de prevenção direcionadas ao público masculino devem ser estimuladas, e também discutidas em ambiente escolar, de forma contínua, com os jovens

Introduction: HIV/AIDs is a public health problem with worldwide epidemiological changes. Objective: To analyze the trend in AIDS incidence coefficients and possible points of change in adults aged 20 to 59 in Brazil, by region, from 2010 to 2017. Method: Ecological study of time and local series, with data referring to the years 2010 to 2017, collected in the Information Technology Department of the Unified Health System, on the diseases referred to, and population data on the website of the Brazilian Institute of Geography and Statistics. The cases were divided by regions of Brazil, in addition to sex and age group. To analyze changes in annual incidences by sex and age group, a Joinpoint regression model was used. Results: AIDS showed an increasing trend among male individuals aged 20 to 29 years in the Central-West, Northeast and North regions and remained, for the most part, stationary in the other age groups in both sexes. Conclusion: There is a need to strengthen the Primary Health Care team and its role in preventing AIDS, as well as expanding specialized services in other regions, in addition to the Southeast and South. Prevention actions aimed at the male public must be stimulated, and also discussed in a school environment, on an ongoing basis, with young people

Introducción: El VIH/SIDA es un problema de salud pública con cambios epidemiológicos a nivel mundial. Objetivo: Analizar la tendencia de los coeficientes de incidencia del SIDA y posibles puntos de cambio en adultos de 20 a 59 años en Brasil, por región, de 2010 a 2017. Método: Estudio ecológico de series temporales y locales, con datos referentes a los años de 2010 a 2017, recolectados en el Departamento de Tecnología de la Información del Sistema Único de Salud, sobre las enfermedades referidas, y datos poblacionales en el sitio web del Instituto Brasileño de Geografía y Estadística. Los casos fueron divididos por regiones de Brasil, además de sexo y grupo de edad. Para analizar la evolución de la incidencia anual por sexo y grupo de edad se utilizó un modelo de regresión de Joinpoint. Resultados: El SIDA mostró tendencia creciente entre los varones de 20 a 29 años de las regiones Centro-Oeste, Nordeste y Norte y permaneció, en su mayor parte, estacionario en los demás grupos etarios de ambos sexos. Conclusión: Es necesario fortalecer el equipo de Atención Primaria de Salud y su papel en la prevención del SIDA, así como ampliar los servicios especializados en otras regiones, además del Sudeste y Sur, estimular acciones de prevención dirigidas al público masculino y También se discute en el ambiente escolar, de manera permanente, con los jóvenes

Heavy Metal Tolerance of Microorganisms Isolated from Coastal Marine Sediments and Their Lead Removal Potential.

In this study, 338 microorganisms, comprising 271 bacteria and 67 fungi, were isolated from sediment samples collected from underexplored Pacific and Caribbean regions of Colombia. Screening trials were conducted on selected strains (n = 276) to assess their tolerance to cadmium (Cd2+), lead (Pb2+), and zinc (Zn2+), leading to the identification of six bacteria capable of withstanding 750 mg·L-1 of each heavy metal ion. Three promising microorganisms, identified as Enterobacter sp. INV PRT213, Pseudomonas sp. INV PRT215, and Stenotrophomonas sp. INV PRT216 were selected for lead removal experiments using LB broth medium supplemented with 400 mg·L-1 Pb2+. Among these, Pseudomonas sp. INV PRT215 exhibited significant potential, removing 49% of initial Pb2+ after 240 min of exposure (16.7 g wet biomass·L-1, pH 5, 30 °C). Infrared spectra of Pb-exposed biomass showed changes in functional groups, including carbonyl groups of amides, carboxylate, phosphate, hydroxyl, and amine groups, compared to the not-exposed control. These changes suggested interactions between the metal and functional groups in the biomass. The findings of this study highlight the potential of microorganisms derived from coastal marine environments as promising candidates for future applications in bioremediation of polluted environments contaminated with heavy metals.

Testing the trade-balance model: resource stoichiometry does not sufficiently explain AM effects.

Variations in arbuscular mycorrhizae (AM) effects on plant growth (MGR) are commonly assumed to result from cost : benefit balances, with C as the cost and, most frequently, P as the benefit. The trade-balance model (TBM) adopts these assumptions and hypothesizes that mycorrhizal benefit depends on C : N : P stoichiometry. Although widely accepted, the TBM has not been experimentally tested. We isolated the parameters included in the TBM and tested these assumptions using it as framework. Oryza sativa plants were supplied with different N : P ratios at low light level, establishing different C : P and C : N exchange rates, and C, N or P limitation. MGR and effects on nutrient uptake, %M, ERM, photosynthesis and shoot starch were measured. C distribution to AM fungi played no role in MGR, and N was essential for all AM effects, including on P nutrition. C distribution to AM and MGR varied with the limiting nutrient (N or P), and evidence of extensive interplay between N and P was observed. The TBM was not confirmed. The results agreed with the exchange of surplus resources and source-sink regulation of resource distribution among plants and AMF. Rather than depending on exchange rates, resource exchange may simply obey both symbiont needs, not requiring further regulation.