Promoting Equity, Diversity, and Inclusion in Surveys: Insights from a Patient-engaged Study to Assess Long COVID Healthcare Needs in Brazil.

BACKGROUND AND OBJECTIVE: Long COVID (LC) refers to persistent symptoms after acute COVID-19 infection, which may endure for months or years. LC affects millions of people globally, with substantial impacts on quality of life, employment, and social participation. Ensuring access to effective, patient-centered care for LC demands evidence, grounded in inclusive representation of those affected by the condition. Yet survey studies frequently under-represent people with the most disabling disease presentations and racially and socio-economically marginalized groups. We aimed to describe a patient-engaged approach to developing a survey to inform public LC healthcare, and to assess its implementation in terms of enabling participation by diverse LC patients in Brazil. METHODS: Survey development was iterative, achieved through an interdisciplinary collaboration among researchers including people living with LC, and grounded in three guiding principles: (1) evidence-based; (2) inclusive, intersectional, and patient-centered understanding of chronic illness and research participation; and (3) sensitivity to the context of healthcare access. RESULTS: The product of our collaboration was a longitudinal survey using a questionnaire assessing: LC symptoms; their clinical and functional evolution; and impacts on quality of life, household income, health service access, utilization, and out-of-pocket expenses. We illustrate how we operationalized our three principles through survey content, instrument design, and administration. 651 participants with diverse LC symptoms, demography, and socio-economic status completed the survey. We successfully included participants experiencing disabling symptoms, Black and mixed race participants, and those with lower education and income. CONCLUSION: By centering patient experience, our novel, principles-based approach succeeded in promoting equity, diversity, and inclusion in LC survey research. These principles guiding patient-engaged collaboration have broad transferability. We encourage survey researchers working on chronic illness and in other contexts of marginalization and inequality to adopt them.

COVID-19 inpatient mortality in Brazil from 2020 to 2022: a cross-sectional overview study based on secondary data.

BACKGROUND: In Brazil, the COVID-19 pandemic found the universal and public Unified Health System (SUS) with problems accumulated over time, due, among other reasons, to low investments, and disparities in resource distribution. The preparedness and response of the healthcare system, involving the SUS and a private sector, was affected by large socioeconomic and healthcare access inequities. This work was aimed at offering an overview of COVID-19 inpatient mortality during the pandemic in Brazil, exploring factors associated with its variations and, specifically, differences across public, private (for-profit) and philanthropic (private non-profit) inpatient healthcare units, providers, and non-providers of services to the SUS. METHODS: This cross-sectional study used public secondary data. The main data source was the SIVEP-Gripe, which comprises data on severe acute respiratory illness records prospectively collected. We also employed the National Record of Health Establishments, the SUS' Hospitalization Information System and municipalities' data from IBGE. We considered adult COVID-19 hospitalizations registered in SIVEP-Gripe from February 2020 to December 2022 in inpatient healthcare units with a minimum of 100 cases in the period. Data analyses explored the occurrence of inpatient mortality, employing general linear mixed models to identify the effects of patients', health care processes', healthcare units' and municipalities' characteristics on it. RESULTS: About 70% of the COVID-19 hospitalizations in Brazil were covered by the SUS, which attended the more vulnerable population groups and had worse inpatient mortality. In general, non-SUS private and philanthropic hospitals, mostly reimbursed by healthcare insurance plans accessible for more privileged socioeconomic classes, presented the best outcomes. Southern Brazil had the best performance among the macro-regions. Black and indigenous individuals, residents of lower HDI municipalities, and those hospitalized out of their residence city presented higher odds of inpatient mortality. Moreover, adjusted inpatient mortality rates were higher in the pandemic peak moments and were significantly reduced after COVID-19 vaccination reaching a reasonable coverage, from July 2021. CONCLUSIONS: COVID-19 exposed socioeconomic and healthcare inequalities and the importance and weaknesses of SUS in Brazil. This work indicates the need to revert the disinvestment in the universal public system, a fundamental policy for reduction of inequities in the country.

[COVID-19 in Latin America: inequalities and response capacity of health systems to health emergenciesCOVID-19 en América Latina: desigualdades y capacidad de respuesta de los sistemas de salud ante emergencias de salud]. / Covid-19 na América Latina: desigualdades e capacidades de resposta dos sistemas de saúde a emergências sanitárias.

Objective: To identify correlations between COVID-19, demographic and socioeconomic characteristics, and the capacity of Latin American health systems to respond to health emergencies. Method: An ecological study was performed using secondary data from 20 Latin American countries regarding incidence, mortality, testing and vaccination coverage for covid-19 from 2020 to 2021 as well as demographic and socioeconomic indicators. The preparedness of countries to respond to health emergencies was explored based on the 2019 State Party Self-Assessment Annual Report on the implementation of the International Health Regulations (IHR). Statistical analyses were performed using the Spearman correlation test (rho). Results: A high positive correlation was noted between gross domestic product per capita and the human development index with the incidence of COVID-19, testing, and vaccination coverage; and between the proportion of elderly population and vaccination coverage. No correlations were identified between the covid-19 indicators and previous IHR implementation capacities. Conclusions: The lack of correlation between indicators related to COVID-19 and the ability to implement the IHR may reflect limitations of the indicators used or of the IHR monitoring tool as an instrument that induces the preparedness of countries to face health emergencies. The results suggest the importance of structural conditioning factors and the need for longitudinal, comparative, and qualitative studies to understand the factors that influenced the response of countries to COVID-19.

Objetivo: Determinar las posibles correlaciones entre la COVID-19, las características demográficas y socioeconómicas, y la capacidad de los sistemas de salud latinoamericanos para responder a emergencias de salud. Método: Se realizó un estudio ecológico con datos secundarios de 20 países latinoamericanos sobre la incidencia, la mortalidad, las pruebas y la cobertura de vacunación relativas a la COVID-19 en el período 2020-2021, y con información demográfica y socioeconómica. Se exploró la preparación de los países para responder a emergencias de salud a partir del Informe Anual de Autoevaluación de los Estados Miembros de la Organización Mundial de la Salud del 2019 sobre la implementación del Reglamento Sanitario Internacional (RSI). Los análisis estadísticos se realizaron con la prueba de correlación (ro) de Spearman. Resultados: Se observó una alta correlación positiva del producto interno bruto per cápita y del índice de desarrollo humano con la incidencia, las pruebas y la cobertura de vacunación respecto a la COVID-19, así como de la proporción de personas mayores en la población con la cobertura de vacunación. No se observó ninguna correlación entre los indicadores de COVID-19 y la capacidad previa de implementación del RSI. Conclusiones: La falta de correlación entre los indicadores relativos a la COVID-19 y la capacidad de implementación del RSI puede deberse a limitaciones de los indicadores utilizados o del mecanismo de seguimiento del RSI como instrumento inductor de la preparación de los países para enfrentar emergencias de salud. Los resultados sugieren la importancia de los factores condicionantes estructurales y la necesidad de realizar estudios longitudinales, comparativos y cualitativos para determinar los factores que influyeron en la respuesta de los países a la COVID-19.

COVID-19 na América Latina: desigualdades e capacidades de resposta dos sistemas de saúde a emergências sanitárias

[RESUMO]. Objetivo. Identificar correlações entre a covid-19, características demográficas e socioeconômicas e capaci- dade dos sistemas de saúde latino-americanos para resposta a emergências sanitárias. Método. Realizou-se um estudo ecológico, utilizando dados secundários de 20 países latino-americanos rela- tivos a incidência, mortalidade, testagem e cobertura vacinal para covid-19 no período de 2020 a 2021, assim como informações demográficas e socioeconômicas. A preparação dos países para responder a emergên- cias sanitárias foi explorada a partir do Relatório Anual de Autoavaliação dos Estados Partes da Organização Mundial da Saúde de 2019 sobre a implementação do Regulamento Sanitário Internacional (RSI). Realiza- ramse análises estatísticas por meio do teste de correlação de Spearman (rho). Resultados. Observou-se correlação positiva alta do produto interno bruto per capita e do índice de desenvol- vimento humano com incidência de covid-19, testagem e cobertura vacinal; e entre proporção da população idosa e cobertura vacinal. Não foram identificadas correlações entre os indicadores da covid-19 e as capaci- dades prévias de implementação do RSI. Conclusões. A ausência de correlação entre indicadores relativos à covid-19 e a capacidade de implementa- ção do RSI pode estar relacionada a limites dos indicadores utilizados ou da ferramenta de acompanhamento do RSI como instrumento indutor da preparação dos países para enfrentamento de emergências sanitárias. Os resultados sugerem a importância de condicionantes estruturais e a necessidade de estudos longitudi- nais, comparativos e qualitativos para compreender os fatores que influenciaram a resposta dos países à covid-19.

[ABSTRACT]. Objective. To identify correlations between COVID-19, demographic and socioeconomic characteristics, and the capacity of Latin American health systems to respond to health emergencies. Method. An ecological study was performed using secondary data from 20 Latin American countries regarding incidence, mortality, testing and vaccination coverage for covid-19 from 2020 to 2021 as well as demographic and socioeconomic indicators. The preparedness of countries to respond to health emergencies was explo- red based on the 2019 State Party Self-Assessment Annual Report on the implementation of the International Health Regulations (IHR). Statistical analyses were performed using the Spearman correlation test (rho). Results. A high positive correlation was noted between gross domestic product per capita and the human development index with the incidence of COVID-19, testing, and vaccination coverage; and between the pro- portion of elderly population and vaccination coverage. No correlations were identified between the covid-19 indicators and previous IHR implementation capacities. Conclusions. The lack of correlation between indicators related to COVID-19 and the ability to implement the IHR may reflect limitations of the indicators used or of the IHR monitoring tool as an instrument that induces the preparedness of countries to face health emergencies. The results suggest the importance of structural con- ditioning factors and the need for longitudinal, comparative, and qualitative studies to understand the factors that influenced the response of countries to COVID-19.

[RESUMEN]. Objetivo. Determinar las posibles correlaciones entre la COVID-19, las características demográficas y socio- económicas, y la capacidad de los sistemas de salud latinoamericanos para responder a emergencias de salud. Método. Se realizó un estudio ecológico con datos secundarios de 20 países latinoamericanos sobre la incidencia, la mortalidad, las pruebas y la cobertura de vacunación relativas a la COVID-19 en el período 2020-2021, y con información demográfica y socioeconómica. Se exploró la preparación de los países para responder a emergencias de salud a partir del Informe Anual de Autoevaluación de los Estados Miembros de la Organización Mundial de la Salud del 2019 sobre la implementación del Reglamento Sanitario Internacional (RSI). Los análisis estadísticos se realizaron con la prueba de correlación (ro) de Spearman. Resultados. Se observó una alta correlación positiva del producto interno bruto per cápita y del índice de desarrollo humano con la incidencia, las pruebas y la cobertura de vacunación respecto a la COVID-19, así como de la proporción de personas mayores en la población con la cobertura de vacunación. No se observó ninguna correlación entre los indicadores de COVID-19 y la capacidad previa de implementación del RSI. Conclusiones. La falta de correlación entre los indicadores relativos a la COVID-19 y la capacidad de implementación del RSI puede deberse a limitaciones de los indicadores utilizados o del mecanismo de seguimiento del RSI como instrumento inductor de la preparación de los países para enfrentar emergencias de salud. Los resultados sugieren la importancia de los factores condicionantes estructurales y la necesidad de realizar estudios longitudinales, comparativos y cualitativos para determinar los factores que influyeron en la respuesta de los países a la COVID-19.

Marketing authorisation and pricing of FDA-approved cancer drugs in Brazil: a retrospective analysis.

Background: Most cancer drugs enter the US market first. US Food and Drug Administration (FDA) approvals of new cancer drugs may influence regulatory decisions in other settings. The study examined whether characteristics of available evidence at FDA approval influenced time-to-marketing authorisation (MA) in Brazil, and price differences between the two countries. Methods: All new FDA-approved cancer drugs from 2010 to 2019 were matched to drugs with MA and prices approved in Brazil by December 2020. Characteristics of main studies, availability of randomised controlled trials (RCTs), overall survival (OS) benefit, added therapeutic benefit, and prices were compared. Findings: Fifty-six FDA-approved cancer drugs with matching indications received a MA at the Brazilian Health Regulatory Agency (Anvisa) after a median of 522 days following US approval (IQR: 351-932). Earlier authorisation in Brazil was associated with availability of RCT (median: 506 vs 760 days, p = 0.031) and evidence of OS benefit (390 vs 543 days, p = 0.019) at FDA approval. At Brazilian marketing authorisation, a greater proportion of cancer drugs had main RCTs (75% vs 60.7%) and OS benefit (42.9% vs 21.4%) than that in the US. Twenty-eight (50%) drugs did not demonstrate added therapeutic benefit over drugs for the same indication in Brazil. Median approved prices of new cancer drugs were 12.9% lower in Brazil compared to the US (adjusted by Purchasing Power Parity). However, for drugs with added therapeutic benefit median prices were 5.9% higher in Brazil compared to the US, while 17.9% lower for those without added benefit. Interpretation: High-quality clinical evidence accelerated the availability of cancer medicines in Brazil. The combination of marketing and pricing authorisation in Brazil may favour the approval of cancer drugs with better supporting evidence, and more meaningful clinical benefit albeit with variable degree of success in achieving lower prices compared to the US. Funding: None.

Standardized extract of Ginkgo biloba treatment and novelty on the weak encoding of spatial recognition memory in rats.

Long-term memory (LTM) formation is dependent on neurochemical changes that guarantee that a recently formed memory (short-term memory [STM]) remains in the specific neural circuitry via the consolidation process. The persistence of recognition memory has been evidenced by using behavioral tagging in young adult rats, but it has not been effective on aging. Here, we investigated the effects of treatment with a standardized extract of Ginkgo biloba (EGb) associated with novelty on the consolidation of object location memory (OLM) and its persistence after weak training of spatial object preference in young adult and aged rats. The object location task used in this study included two habituation sessions, training sessions associated or not associated with EGb treatment and contextual novelty, and short-term or long-term retention testing sessions. Altogether, our data showed that treatment with EGb associated with novelty close to the time of encoding resulted in STM that lasted for 1 h and persisted for 24 h for both young adult and aged rats. In aged rats, the cooperative mechanisms induced robust long-term OLM. Our findings support and extend our knowledge about recognition memory in aged rats and the modulating effects of EGb treatment and contextual novelty on the persistence of memory.

Inclusion of Soybean Hulls (Glycine max) and Pupunha Peach Palm (Bactris gasipaes) Nanofibers in the Diet of Growing Rabbits: Effects on Zootechnical Performance and Intestinal Health.

This study evaluated the inclusion of nanofibers from soybean hulls and pupunha peach palm heart sheaths in the diet of growing rabbits. Twenty-four New Zealand White rabbits (male and female) were allocated in three experimental groups: control, fed a basal diet; Nanosoy, fed a diet containing 7% soybean-hull nanofibers; and Nanopupunha, fed a diet containing 7% pupunha palm heart-sheath nanofibers. The Nanosoy-group rabbits showed poorer final weight, daily feed intake, and daily weight gain than those in other groups. In the duodenum, villus height, total mucosal thickness, and villus width were higher in rabbits that received nanofiber-supplemented diets than in the controls. Higher villus density and wall thickness were observed in Nanopupunha-fed rabbits than in the controls. In the jejunum, although the crypt depth was higher in Nanosoy-fed rabbits, the villus height:crypt depth ratio was higher in the Nanopupunha-fed group. Nanosoy-fed animals exhibited increased count Enterobacteriaceae populations. Rabbits in both nanofiber-fed groups exhibited higher lactic-acid bacterial counts than those in the control-diet group. Therefore, although the inclusion of 7% Nanopupunha in the diet of rabbits did not alter the performance, it improved intestinal health and increased the lactic-acid bacterial count in the cecum of growing rabbits.

Covid-19 na América Latina: desigualdades e capacidades de resposta dos sistemas de saúde a emergências sanitárias / COVID-19 in Latin America: inequalities and response capacity of health systems to health emergencies / COVID-19 en América Latina: desigualdades y capacidad de respuesta de los sistemas de salud ante emergencias de salud

RESUMO Objetivo. Identificar correlações entre a covid-19, características demográficas e socioeconômicas e capacidade dos sistemas de saúde latino-americanos para resposta a emergências sanitárias. Método. Realizou-se um estudo ecológico, utilizando dados secundários de 20 países latino-americanos relativos a incidência, mortalidade, testagem e cobertura vacinal para covid-19 no período de 2020 a 2021, assim como informações demográficas e socioeconômicas. A preparação dos países para responder a emergências sanitárias foi explorada a partir do Relatório Anual de Autoavaliação dos Estados Partes da Organização Mundial da Saúde de 2019 sobre a implementação do Regulamento Sanitário Internacional (RSI). Realizaramse análises estatísticas por meio do teste de correlação de Spearman (rho). Resultados. Observou-se correlação positiva alta do produto interno bruto per capita e do índice de desenvolvimento humano com incidência de covid-19, testagem e cobertura vacinal; e entre proporção da população idosa e cobertura vacinal. Não foram identificadas correlações entre os indicadores da covid-19 e as capacidades prévias de implementação do RSI. Conclusões. A ausência de correlação entre indicadores relativos à covid-19 e a capacidade de implementação do RSI pode estar relacionada a limites dos indicadores utilizados ou da ferramenta de acompanhamento do RSI como instrumento indutor da preparação dos países para enfrentamento de emergências sanitárias. Os resultados sugerem a importância de condicionantes estruturais e a necessidade de estudos longitudinais, comparativos e qualitativos para compreender os fatores que influenciaram a resposta dos países à covid-19.

ABSTRACT Objective. To identify correlations between COVID-19, demographic and socioeconomic characteristics, and the capacity of Latin American health systems to respond to health emergencies. Method. An ecological study was performed using secondary data from 20 Latin American countries regarding incidence, mortality, testing and vaccination coverage for covid-19 from 2020 to 2021 as well as demographic and socioeconomic indicators. The preparedness of countries to respond to health emergencies was explored based on the 2019 State Party Self-Assessment Annual Report on the implementation of the International Health Regulations (IHR). Statistical analyses were performed using the Spearman correlation test (rho). Results. A high positive correlation was noted between gross domestic product per capita and the human development index with the incidence of COVID-19, testing, and vaccination coverage; and between the proportion of elderly population and vaccination coverage. No correlations were identified between the covid-19 indicators and previous IHR implementation capacities. Conclusions. The lack of correlation between indicators related to COVID-19 and the ability to implement the IHR may reflect limitations of the indicators used or of the IHR monitoring tool as an instrument that induces the preparedness of countries to face health emergencies. The results suggest the importance of structural conditioning factors and the need for longitudinal, comparative, and qualitative studies to understand the factors that influenced the response of countries to COVID-19.

RESUMEN Objetivo. Determinar las posibles correlaciones entre la COVID-19, las características demográficas y socioeconómicas, y la capacidad de los sistemas de salud latinoamericanos para responder a emergencias de salud. Método. Se realizó un estudio ecológico con datos secundarios de 20 países latinoamericanos sobre la incidencia, la mortalidad, las pruebas y la cobertura de vacunación relativas a la COVID-19 en el período 2020-2021, y con información demográfica y socioeconómica. Se exploró la preparación de los países para responder a emergencias de salud a partir del Informe Anual de Autoevaluación de los Estados Miembros de la Organización Mundial de la Salud del 2019 sobre la implementación del Reglamento Sanitario Internacional (RSI). Los análisis estadísticos se realizaron con la prueba de correlación (ro) de Spearman. Resultados. Se observó una alta correlación positiva del producto interno bruto per cápita y del índice de desarrollo humano con la incidencia, las pruebas y la cobertura de vacunación respecto a la COVID-19, así como de la proporción de personas mayores en la población con la cobertura de vacunación. No se observó ninguna correlación entre los indicadores de COVID-19 y la capacidad previa de implementación del RSI. Conclusiones. La falta de correlación entre los indicadores relativos a la COVID-19 y la capacidad de implementación del RSI puede deberse a limitaciones de los indicadores utilizados o del mecanismo de seguimiento del RSI como instrumento inductor de la preparación de los países para enfrentar emergencias de salud. Los resultados sugieren la importancia de los factores condicionantes estructurales y la necesidad de realizar estudios longitudinales, comparativos y cualitativos para determinar los factores que influyeron en la respuesta de los países a la COVID-19.

Consumption of antidepressants and economic austerity in Brazil.

OBJECTIVE: To describe consumption of antidepressants in Brazil through dispensing data from pharmacy retail outlets, in between 2011 and 2017, and explore the relationship between consumption patterns and changing economic context during this period. METHODS: A time-series analysis of dispensing data from pharmacy retail outlets was carried out considering 10 commonly used antidepressants. DDDs/1000 inhabitants/year for each drug were calculated for each quarter. Ttime-series graphs were constructed to analyze the volumes of drugs purchasedRelationship between economic context and consumption was assessed using the following indicators: annual percent change in Gross Domestic Product (GDP), public debt (% of GDP), and annual net savings (in billions of Brazilian reais - BRL). RESULTS: Overall consumption of antidepressants increased over the study period despite a sharp fall of -3.55% in annual percent change in GDP, negative net annual savings of -53.568 BRL, and an increase in public debt exceeding 32% of the GDP during the economic crisis of 2015. CONCLUSION: Consumption of antidepressants from pharmacy retail outlets increased even within a context of economic crisis, which may be a reflection of the disease burden in Brazil. Health budget cuts due to the economic crisis may be directing users to out-of-pocket expenses, deepening social inequalities.

Geographical variation in demand, utilization, and outcomes of hospital services for COVID-19 in Brazil: A descriptive serial cross-sectional study.

OBJECTIVE: To analyze the geographical variation in the provision of health services, namely in demand, patterns of utilization, and effectiveness in the Brazilian Health Regions in four different periods of the COVID-19 pandemic, from February 2020 to March 2021. METHODS: Descriptive serial cross-sectional study based on secondary data on COVID-19 hospitalizations from SIVEP-Gripe, a public and open-access database of Severe Acute Respiratory Illness records collected by the Brazilian Ministry of Health, and COVID-19 case notification data from Brasil.io, a repository of public data. Fifty-six epidemiological weeks were split into four periods. The following variables were considered for each Brazilian Health Region, per period: number of hospitalizations, hospitalizations per 100,000 inhabitants, hospitalizations per 100 new cases notified in the Health Region, percentage of hospitalizations with ICU use, percentages of hospitalizations with invasive and non-invasive ventilatory support, percentage of hospitalizations resulting in death and percentage of hospitalizations with ICU use resulting in death. Descriptive statistics of the variables were obtained across all 450 Health Regions in Brazil over the four defined pandemic periods. Maps were generated to capture the spatiotemporal variation and trends during the first year of the COVID-19 pandemic in Brazil. RESULTS: There was great variation in how COVID-19 hospitalizations grew and spread among Health Regions, with higher numbers between June and August 2020, and, especially, from mid-December 2020 to March 2021. The variation pattern in the proportion of ICU use in the hospitalizations across the Health Regions was broad, with no intensive care provision in large areas in the North, Northeast, and Midwest. The proportions of hospitalizations and hospitalizations with ICU use resulting in deaths were remarkably high, reaching medians of 34.0% and 62.0% across Health Regions, respectively. CONCLUSION: The Heath Regions in Brazil are highly diverse, showing broad disparities in the capacity to respond to the demands imposed by COVID-19, services provided, use and outcomes.

Patterns of hospital utilization in the Unified Health System in six Brazilian capitals: comparison between the year before and the first six first months of the COVID-19 pandemic.

OBJECTIVE: To analyze the temporal evolution of the pattern of hospital use in the context of the COVID-19 pandemic in Brazil. METHODS: This retrospective observational study compared hospital use and mortality in the Brazilian Unified Health System (SUS) in the first six months of the COVID-19 pandemic with the year before the onset of the pandemic in six Brazilian capitals (São Paulo, Rio de Janeiro, Manaus, Fortaleza, Recife, and Brasilia). It was based on secondary administrative data from the SUS Hospital Information System (SIH), focusing on the number of hospitalizations per fortnight, age, and gender of patients, hospital length of stay, and the proportions of surgical, elective, with the use of ICU, and resulting in death hospitalizations. It also compared the number of hospitalizations and mortality related to frequent diagnostic groups. RESULTS: A significant drop was identified in the number of hospitalizations as of March 2020, with the first peak of COVID-19 hospitalizations in five capitals recorded in May 2020. In the six capitals, we observed significant reductions in the mean number of hospitalizations per fortnight from the beginning of the pandemic. We also identified an increase in the mean age of the patients and the proportion of male patients. The proportion of surgical and elective hospitalizations dropped significantly in all capitals, while the proportion of hospitalizations with ICU use increased significantly. Significant increases in-hospital mortality were also recorded in the six capitals with the pandemic, including or excluding COVID-19 hospitalizations from the comparison. CONCLUSION: The pandemic caused changes in the pattern of use and hospital indicators in the first six months in the cities considered, evidencing the need for attention to diseases with a hospital production altered by the COVID-19 course and health system performance problems in the face of challenges.

Advances in nanotechnology and the benefits of using cellulose nanofibers in animal nutrition.

The production of cellulose nanofibers promotes the utilization of plant residues that are generated in agro-industries during food processing. The utilization of these plant by-products reduces environmental contamination. Cellulose nanofibers are used in several sectors, including the drug, food, and animal nutrition industries. Many sources of nanofibers used in animal diets can be used as potential fiber substitutes after being processed to improve efficiency. For instance, including nanometric particles of plant fibers (<100 nm) in animal feed may provide excellent physical properties such as high reactivity, a large surface area, and improved nutrient absorption from the diet. Nanotechnology improves the characteristics of fibers that are important for gastrointestinal transit and their utilization as energy sources and substrates for microbial fermentation in the digestive tract of animals. Nanofibers can improve the synthesis of volatile fatty acids and the blood lipid profile, with positive effects on the intestinal health of animals. Moreover, in vitro and in vivo studies have demonstrated promising effects in reducing blood glucose levels without toxic effects on the body. Supplying nanofibers in the diet improve animal performance, increase productivity, and work toward a more sustainable economic development of agribusinesses. The quality of animal products such as meat, milk, and eggs is also reported to be improved with the inclusion of nanominerals in the feed. Overall, the application of nanotechnology to harness the by-products of agro-industries can increase economic viability and sustainability in animal production systems. Therefore, this review presents a current survey on the main research and advances in the utilization of nanotechnology, focusing on cellulose nanofibers in animal feed to improve animal performance.

Antituberculosis Activities of Lapachol and ß-Lapachone in Combination with Other Drugs in Acidic pH.

Background: The treatment of multidrug-resistant tuberculosis (MDR-TB) is a challenge to be overcome. The increase of resistant isolates associated with serious side effects during therapy leads to the search for substances that have anti-TB activity, which make treatment less toxic, and also act in the macrophage acidic environment promoted by the infection. Objective: The aim of this study was to investigate lapachol and ß-lapachone activities in combination with other drugs against Mycobacterium tuberculosis at neutral and acidic pH and its cytotoxicity. Design: Inhibitory and bactericidal activities against M. tuberculosis and clinical isolates were determined. Drug combination and cytotoxicity assay were carried out using standard TB drugs and/or N-acetylcysteine (NAC). Results: Both naphthoquinones presented activity against MDR clinical isolates. The combinations with the first-line TB drugs demonstrated an additive effect and ß-lapachone+NAC were synergic against H37Rv. Lapachol activity at acidic pH and its association with NAC improved the selectivity index. Lapachol and ß-lapachone produced cell morphological changes in bacilli at pH 6.0 and 6.8, respectively. Conclusion: Lapachol revealed promising anti-TB activity, especially associated with NAC.

COVID-19 hospitalizations in Brazil's Unified Health System (SUS).

OBJECTIVE: To study the profile of hospitalizations due to COVID-19 in the Unified Health System (SUS) in Brazil and to identify factors associated with in-hospital mortality related to the disease. METHODS: Cross-sectional study, based on secondary data on COVID-19 hospitalizations that occurred in the SUS between late February through June. Patients aged 18 years or older with primary or secondary diagnoses indicative of COVID-19 were included. Bivariate analyses were performed and generalized linear mixed models (GLMM) were estimated with random effects intercept. The modeling followed three steps, including: attributes of the patients; elements of the care process; and characteristics of the hospital and place of hospitalization. RESULTS: 89,405 hospitalizations were observed, of which 24.4% resulted in death. COVID-19 patients hospitalized in the SUS were predominantly male (56.5%) with a mean age of 58.9 years. The length of stay ranged from less than 24 hours to 114 days, with a mean of 6.9 (±6.5) days. Of the total number of hospitalizations, 22.6% reported ICU use. The odds on in-hospital death were 16.8% higher among men than among women and increased with age. Black individuals had a higher likelihood of death. The behavior of the Charlson and Elixhauser indices was consistent with the hypothesis of a higher risk of death among patients with comorbidities, and obesity had an independent effect on increasing this risk. Some states, such as Amazonas and Rio de Janeiro, had a higher risk of in-hospital death from COVID-19. The odds on in-hospital death were 72.1% higher in municipalities with at least 100,000 inhabitants, though being hospitalized in the municipality of residence was a protective factor. CONCLUSION: There was broad variation in COVID-19 in-hospital mortality in the SUS, associated with demographic and clinical factors, social inequality, and differences in the structure of services and quality of health care.

Physicochemical and immunological characterization of chitosan-coated bacteriophage nanoparticles for in vivo mycotoxin modeling.

To propose a novel modeling of aflatoxin immunization and surrogate toxin conjugate from AFB1 vaccines, an immunogen based on the mimotope, (i.e. a peptide-displayed phage that mimics aflatoxins epitope without toxin hazards) was designed. The recombinant phage 3P30 was identified by phage display technology and exhibited the ability to bind, dose dependent, specifically to its cognate target - anti-AFB1 antibody. In immunization assay, the phage-displayed mimotope and its peptide chemically synthesized were able to induce specific anti-AFB1 antibodies, indicating the proof of concept for aflatoxin mimicry. Furthermore, the phage 3P30 was homogeneously coated with chitosan, which also provided a tridimensional matrix network for mucosal delivery. After intranasal immunization, chitosan coated phages improved specific immunogenicity compared to the free antigen. It can be concluded that affinity-selected phage may contribute to the rational design of epitope-based vaccines in a prospectus for the control of aflatoxins and possibly other mycotoxins, and that chitosan coating improved the vectorization of the vaccine by the mucosal route.

Influence of simethicone and fasting on the quality of abdominal ultrasonography in New Zealand White rabbits.

Presence of significant quantities of gas in the intestines may hinder a proper conduction of abdominal ultrasonography. In humans, preparatory techniques are used to solve this, but measures to avoid ultrasonographic complications due to intestinal gas in rabbits have not been reported. The objective of this study was to evaluate the influence of fasting and simethicone administered orally on the quality of ultrasonographic images of the gallbladder, kidneys, and jejunum in adult New Zealand White (NZW) rabbits. A total of 28 adult NZW rabbits were included in a crossover design study, involving four groups: F: fasting for 4-6 h before the examination; FS: fasting and application of simethicone (20 mg/kg, orally) 20 to 30 min before the examination; S: application of simethicone 20-30 min before the examination without fasting; and C: controls without fasting and no application of simethicone. Evaluation of the ultrasonographic images was done in terms of percentage of visualization of each organ and image quality using a 3-point scoring system (unacceptable, acceptable, or excellent). The kidneys and the gallbladder were visualized at an equal frequency in all groups, while the jejunum was visualized more frequently in the FS group. The image quality scores for gallbladder, right kidney, and left kidney was similar for all groups, but for the jejunum, a higher number of images with acceptable scores was found within the FS group.

[Workforce management in Emergency Care Units: government strategies and profile of healthcare professionals]. / Gestão do trabalho nas Unidades de Pronto Atendimento: estratégias governamentais e perfil dos profissionais de saúde.

In the late 2000s, the expansion of Emergency Care Units (UPAs) in Brazil's policy for provision of urgent healthcare included hiring a large contingent of health professionals. This article analyzes government strategies for workforce management and the profile of these professionals in the UPAs in the State of Rio de Janeiro, which has the largest number of such units in the country. The methods included document analysis, interviews with managers, and visits to the UPAs and interviews with coordinators, physicians, and nurses. The results showed that the workforce management strategies varied over time and according to administrative sphere (state versus municipal). The so-called Social Organizations became the main hirers of health professionals in the UPAs, since they allowed management flexibility. However, there were problems with selection and stability, with a predominance of young professionals with limited experience and high physician turnover. Instability associated with outsourced hiring reinforced the view of work at the UPA as a temporary job.

Validation of western blot for Histoplasma capsulatum antibody detection assay.

BACKGROUND: Histoplasmosis is worldwide systemic mycoses caused by the dimorphic fungus Histoplasma capsulatum. The isolation and identification of H. capsulatum in culture is the reference test for histoplasmosis diagnosis confirmation. However, in the absence of it, serology has been used as a presumptive diagnosis through antibody and antigen detection. The purpose of the present study was to validate an immunoassay method (western blot) for antibodies detection in the diagnosis of histoplasmosis. METHODS: To validate the western blot (WB) a study was conducted using 118 serum samples from patients with histoplasmosis and 118 serum controls collected from January 2000 to December 2013 in residents of the Rio de Janeiro State, Brazil. Diagnostic validation parameters were calculated based on the categorization of results obtained in a 2 × 2 table and subjected to statistical analysis. In addition, the viability of deglycosylated histoplasmin antigen (ptHMIN) onto nitrocellulose membranes previously sensitized was evaluated during the same period. RESULTS: The WB test showed sensitivity of 94.9 %, specificity of 94.1 %, positive predictive value of 94.1 %, negative predictive value of 94.9 %, accuracy of 94.5 %, and almost perfect precision. Besides, the strips have proved to be viable for using at least 5 years after ptHMIN antigen sensitization. CONCLUSION: Western blot test using ptHMIN provides sensitive, specific, and faster results. Therefore, could be considered a useful tool in the diagnosis of histoplasmosis being used by public health system, even in situations where laboratory facilities are relatively limited.

Antimicrobial effect against different bacterial strains and bacterial adaptation to essential oils used as feed additives.

The aim of this study was to evaluate the antimicrobial activity and determine the minimum bactericidal concentration (MBC) of the essential oils derived from Origanum vulgare (oregano), Melaleuca alternifolia (tea tree), Cinnamomum cassia (cassia), and Thymus vulgaris (white thyme) against Salmonella Typhimurium, Salmonella Enteritidis, Escherichia coli, Staphylococcus aureus and Enterococcus faecalis. The study also investigated the ability of these different bacterial strains to develop adaptation after repetitive exposure to sub-lethal concentrations of these essential oils. The MBC of the essential oils studied was determined by disc diffusion and broth dilution methods. All essential oils showed antimicrobial effect against all bacterial strains. In general, the development of adaptation varied according to the bacterial strain and the essential oil (tea tree > white thyme > oregano). Therefore, it is important to use essential oils at efficient bactericidal doses in animal feed, food, and sanitizers, since bacteria can rapidly develop adaptation when exposed to sub-lethal concentrations of these oils.

La présente étude avait pour but d'évaluer l'activité antimicrobienne et de déterminer la concentration bactéricide minimale (CBM) des huiles essentielles dérivées d'Origanum vulgare (origan), de Melaleuca alternifolia (l'arbre à thé), de Cinnamomum cassia (cassia), et de Thymus vulgaris (thym blanc) contre Salmonella Typhimurium, Salmonella Enteritidis, Escherichia coli, Staphylococcus aureus, et Enterococcus faecalis. L'étude visait également à examiner la capacité de ces différentes souches bactériennes à développer une capacité d'adaptation après une exposition répétée à des concentrations sub-létales de ces huiles essentielles. La CBM des huiles essentielles étudiées a été déterminée par des méthodes de diffusion en disque et de dilution en bouillon. Toutes les huiles essentielles ont démontré un effet antimicrobien contre toutes les souches bactériennes. En général, le développement de la capacité d'adaptation variait selon la souche bactérienne et l'huile essentielle (arbre à thé > thym blanc > origan). Il est donc important que les huiles essentielles soient utilisées à des doses bactéricides efficaces dans la nourriture animale, les aliments, et les assainisseurs, étant donné que les bactéries peuvent rapidement développer une adaptation lorsqu'exposées à des concentrations sub-létales de ces huiles.(Traduit par Docteur Serge Messier).

Planning oral health care using the sociodental approach and the index of family living conditions: a cross-sectional study in Brazilian adolescents.

BACKGROUND: Oral health care needs assessment is frequently restricted to clinical measures. Combining normative assessment, behavioural propensity, oral health-related quality of life and information of family living conditions may provide a better comprehensive approach of adolescent's oral health needs assessment. The aim of this study was to compare normative methods of dental caries need with the sociodental approach in 12-year-old adolescents according to family's living conditions in a deprived community in Brazil. In addition, dental caries need assessment using the normative method and the sociodental approach was compared between adolescents living in different living conditions. METHODS: A cross-sectional survey was conducted in the Manguinhos community in the city of Rio de Janeiro, Brazil. A weighted sample of 159 participants was randomly selected to represent the population of 2004 12-year-old adolescents. Socioeconomic characteristics and living conditions of the family were assessed using the Family Development Index (FDI). Oral health-related quality of life (OHRQoL) was assessed using the generic and CS-Child-OIDP, and adolescent's propensity to adopt oral health promoting behaviours was verified through interviews. Dental caries and treatment need were assessed normatively by clinical oral examinations (DMFT Index) and adolescents were classified into two groups (non severe or severe caries). The sociodental approach included clinical measures of caries, propensity to adopt oral health promoting behaviors and OHRQoL. Families were classified based on the FDI as 'not severe', 'severe' and 'very severe'. Measures of caries, OHRQoL and propensity outcomes were compared between FDI groups using Chi-square and Kruskal-Wallis tests. In addition, dental treatment needs using normative method and sociodental approach were compared for the whole sample and according to FDI groups. RESULTS: Dental caries, OHRQoL and lower propensity needs were positively associated with FDI severity. The percentages of adolescents with normative dental needs from families with 'very severe', 'severe' and 'not severe' FDI were 59.3, 48.4 and 17.2 % (P < 0.05). Using the sociodental approach, the treatment needs for the three FDI groups decreased to 8.8, 13.6 and 8.6 %, respectively (P < 0.05). CONCLUSIONS: Using a combination of sociodental approach and the index of family living conditions was useful for defining dental care priorities in adolescents living in deprived communities and can optimise the use of resources in dental services.