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Abstract Introduction: Identifying risk factors for autosomal dominant polycystic kidney disease (ADPKD) progression is important. However, studies that have evaluated this subject using a Brazilian sample is sparce. Therefore, the aim of this study was to identify risk factors for renal outcomes and death in a Brazilian cohort of ADPKD patients. Methods: Patients had the first medical appointment between January 2002 and December 2014, and were followed up until December 2019. Associations between clinical and laboratory variables with the primary outcome (sustained decrease of at least 57% in the eGFR from baseline, need for dialysis or renal transplantation) and the secondary outcome (death from any cause) were analyzed using a multiple Cox regression model. Among 80 ADPKD patients, those under 18 years, with glomerular filtration rate <30 mL/min/1.73 m2, and/or those with missing data were excluded. There were 70 patients followed. Results: The factors independently associated with the renal outcomes were total kidney length - adjusted Hazard Ratio (HR) with a 95% confidence interval (95% CI): 1.137 (1.057-1.224), glomerular filtration rate - HR (95% CI): 0.970 (0.949-0.992), and serum uric acid level - HR (95% CI): 1.643 (1.118-2.415). Diabetes mellitus - HR (95% CI): 8.115 (1.985-33.180) and glomerular filtration rate - HR (95% CI): 0.957 (0.919-0.997) were associated with the secondary outcome. Conclusions: These findings corroborate the hypothesis that total kidney length, glomerular filtration rate and serum uric acid level may be important prognostic predictors of ADPKD in a Brazilian cohort, which could help to select patients who require closer follow up.
Resumo Introdução: É importante identificar fatores de risco para progressão da doença renal policística autossômica dominante (DRPAD). Entretanto, são escassos os estudos que avaliam esse assunto utilizando amostra brasileira. Portanto, o objetivo deste estudo foi identificar fatores de risco para desfechos renais e óbito em coorte brasileira de pacientes com DRPAD. Métodos: Os pacientes tiveram o primeiro atendimento médico entre janeiro/2002 e dezembro/2014, sendo acompanhados até dezembro/2019. Associações entre variáveis clínicas e laboratoriais com desfecho primário (redução sustentada de pelo menos 57% na TFGe em relação ao valor basal, necessidade de diálise ou transplante renal) e desfecho secundário (óbito por qualquer causa) foram analisadas pelo modelo de regressão múltipla de Cox. Entre 80 pacientes com DRPAD, foram excluídos aqueles menores de 18 anos, com TFG <30 mL/min/1,73 m2 e/ou aqueles com dados ausentes. Foram acompanhados 70 pacientes. Resultados: Fatores independentemente associados aos desfechos renais foram: comprimento renal total - Razão de Risco (HR) ajustada com intervalo de confiança de 95% (IC 95%): 1,137 (1,057-1,224), taxa de filtração glomerular - HR (IC 95%): 0,970 (0,949-0,992) e nível sérico de ácido úrico - HR (IC 95%): 1,643 (1,118-2,415). Diabetes mellitus - HR (IC 95%): 8,115 (1,985-33,180) e TFG - HR (IC 95%): 0,957 (0,919-0,997) foram associados ao desfecho secundário. Conclusões: Esses achados corroboram a hipótese de que comprimento renal total, TFG e nível sérico de ácido úrico podem ser importantes preditores prognósticos de DRPAD em uma coorte brasileira, o que pode ajudar a selecionar pacientes que necessitam de acompanhamento mais próximo.
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INTRODUCTION: Identifying risk factors for autosomal dominant polycystic kidney disease (ADPKD) progression is important. However, studies that have evaluated this subject using a Brazilian sample is sparce. Therefore, the aim of this study was to identify risk factors for renal outcomes and death in a Brazilian cohort of ADPKD patients. METHODS: Patients had the first medical appointment between January 2002 and December 2014, and were followed up until December 2019. Associations between clinical and laboratory variables with the primary outcome (sustained decrease of at least 57% in the eGFR from baseline, need for dialysis or renal transplantation) and the secondary outcome (death from any cause) were analyzed using a multiple Cox regression model. Among 80 ADPKD patients, those under 18 years, with glomerular filtration rate <30 mL/min/1.73 m2, and/or those with missing data were excluded. There were 70 patients followed. RESULTS: The factors independently associated with the renal outcomes were total kidney length - adjusted Hazard Ratio (HR) with a 95% confidence interval (95% CI): 1.137 (1.057-1.224), glomerular filtration rate - HR (95% CI): 0.970 (0.949-0.992), and serum uric acid level - HR (95% CI): 1.643 (1.118-2.415). Diabetes mellitus - HR (95% CI): 8.115 (1.985-33.180) and glomerular filtration rate - HR (95% CI): 0.957 (0.919-0.997) were associated with the secondary outcome. CONCLUSIONS: These findings corroborate the hypothesis that total kidney length, glomerular filtration rate and serum uric acid level may be important prognostic predictors of ADPKD in a Brazilian cohort, which could help to select patients who require closer follow up.
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Progresión de la Enfermedad , Tasa de Filtración Glomerular , Riñón Poliquístico Autosómico Dominante , Humanos , Riñón Poliquístico Autosómico Dominante/complicaciones , Masculino , Femenino , Brasil/epidemiología , Adulto , Persona de Mediana Edad , Factores de Riesgo , Estudios de Cohortes , Ácido Úrico/sangre , Estudios RetrospectivosRESUMEN
Cholecystectomy is considered as a safe procedure to treat patients with gallstones. However, epidemiological studies highlighted an association between cholecystectomy and metabolic disorders, such as type 2 diabetes mellitus and metabolic dysfunction-associated steatotic liver disease (MASLD), independently of the gallstone disease. Following cholecystectomy, bile acids flow directly from the liver into the intestine, leading to changes in the entero-hepatic circulation of bile acids and their metabolism. The changes in bile acids metabolism impact the gut microbiota. Therefore, cholecystectomized patients display gut dysbiosis characterized by a reduced diversity, a loss of bacteria producing short-chain fatty acids and an increase in pro-inflammatory bacteria. Alterations of both bile acids metabolism and gut microbiota occurring after cholecystectomy can promote the development of metabolic disorders. In this review, we discuss the impact of cholecystectomy on bile acids and gut microbiota and its consequences on metabolic functions.
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Ácidos y Sales Biliares , Colecistectomía , Microbioma Gastrointestinal , Enfermedades Metabólicas , Humanos , Colecistectomía/efectos adversos , Microbioma Gastrointestinal/fisiología , Ácidos y Sales Biliares/metabolismo , Enfermedades Metabólicas/etiología , Hígado/metabolismo , DisbiosisRESUMEN
The food pyramid is a pre-established nutritional education tool. The integration between the intestinal microbiome, food groups, and SCFA-producing bacteria, which benefit from the ingestion of these foods, has the potential to further improve and innovate healthy eating. The diet-microbiome interaction needs to be incorporated into nutrition science, and the food pyramid might assist in this interaction and nutritional learning. Against this context, this brief communication proposes through the food pyramid, the interactions between the intestinal microbiota, food groups, and SCFAs-producing bacteria.
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Microbioma Gastrointestinal , Humanos , DietaRESUMEN
Introduction: The timing of maternal exposure to air pollution is crucial to define metabolic changes in the offspring. Here we aimed to determine the most critical period of maternal exposure to particulate matter (PM2.5) that impairs offspring's energy metabolism and gut microbiota composition. Methods: Unexposed female and male C57BL/6J mice were mated. PM2.5 or filtered air (FA) exposure occurred only in gestation (PM2.5/FA) or lactation (FA/PM2.5). We studied the offspring of both genders. Results: PM2.5 exposure during gestation increased body weight (BW) at birth and from weaning to young in male adulthood. Leptin levels, food intake, Agrp, and Npy levels in the hypothalamus were also increased in young male offspring. Ikbke, Tnf increased in male PM2.5/FA. Males from FA/PM2.5 group were protected from these phenotypes showing higher O2 consumption and Ucp1 in the brown adipose tissue. In female offspring, we did not see changes in BW at weaning. However, adult females from PM2.5/FA displayed higher BW and leptin levels, despite increased energy expenditure and thermogenesis. This group showed a slight increase in food intake. In female offspring from FA/PM2.5, BW, and leptin levels were elevated. This group displayed higher energy expenditure and a mild increase in food intake. To determine if maternal exposure to PM2.5 could affect the offspring's gut microbiota, we analyzed alpha diversity by Shannon and Simpson indexes and beta diversity by the Linear Discriminant Analysis (LDA) in offspring at 30 weeks. Unlike males, exposure during gestation led to higher adiposity and leptin maintenance in female offspring at this age. Gestation exposure was associated with decreased alpha diversity in the gut microbiota in both genders. Discussion: Our data support that exposure to air pollution during gestation is more harmful to metabolism than exposure during lactation. Male offspring had an unfavorable metabolic phenotype at a young age. However, at an older age, only females kept more adiposity. Ultimately, our data highlight the importance of controlling air pollution, especially during gestation.
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Contaminación del Aire , Microbioma Gastrointestinal , Efectos Tardíos de la Exposición Prenatal , Humanos , Ratones , Animales , Femenino , Masculino , Exposición Materna/efectos adversos , Leptina/metabolismo , Efectos Tardíos de la Exposición Prenatal/metabolismo , Ratones Endogámicos C57BL , Obesidad/metabolismo , Material Particulado/efectos adversos , Peso Corporal , Contaminación del Aire/efectos adversos , Metabolismo EnergéticoRESUMEN
Metformin is the most prescribed drug for DM2, but its site and mechanism of action are still not well established. Here, we investigated the effects of metformin on basolateral intestinal glucose uptake (BIGU), and its consequences on hepatic glucose production (HGP). In diabetic patients and mice, the primary site of metformin action was the gut, increasing BIGU, evaluated through PET-CT. In mice and CaCo2 cells, this increase in BIGU resulted from an increase in GLUT1 and GLUT2, secondary to ATF4 and AMPK. In hyperglycemia, metformin increased the lactate (reducing pH and bicarbonate in portal vein) and acetate production in the gut, modulating liver pyruvate carboxylase, MPC1/2, and FBP1, establishing a gut-liver crosstalk that reduces HGP. In normoglycemia, metformin-induced increases in BIGU is accompanied by hypoglycemia in the portal vein, generating a counter-regulatory mechanism that avoids reductions or even increases HGP. In summary, metformin increases BIGU and through gut-liver crosstalk influences HGP.
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Tracto Gastrointestinal , Glucosa , Hígado , Metformina , Animales , Humanos , Ratones , Células CACO-2 , Diabetes Mellitus Tipo 2 , Glucosa/metabolismo , Hipoglucemiantes/farmacología , Hígado/metabolismo , Metformina/farmacología , Tomografía Computarizada por Tomografía de Emisión de Positrones , Tracto Gastrointestinal/metabolismoRESUMEN
ABSTRACT The food pyramid is a pre-established nutritional education tool. The integration between the intestinal microbiome, food groups, and SCFA-producing bacteria, which benefit from the ingestion of these foods, has the potential to further improve and innovate healthy eating. The diet-microbiome interaction needs to be incorporated into nutrition science, and the food pyramid might assist in this interaction and nutritional learning. Against this context, this brief communication proposes through the food pyramid, the interactions between the intestinal microbiota, food groups, and SCFAs-producing bacteria.
RESUMO A pirâmide alimentar é uma ferramenta pré-estabelecida de educação nutricional. A integração entre microbioma intestinal, grupos de alimentos e bactérias produtoras de ácidos graxos de cadeia curta (AGCC), que se beneficiam da ingestão de carboidratos fermentáveis, tem o potencial de melhorar e inovar ainda mais a proposta de alimentação saudável. O conceito dieta-microbiota intestinal pode ser incorporado à ciência da nutrição, e a pirâmide alimentar pode auxiliar nessa interação nutricional. Diante desse contexto, esta breve comunicação propõe, por meio da pirâmide alimentar, a ampliação do conhecimento entre a microbiota intestinal, grupos alimentares e bactérias produtoras de AGCC.
HIGHLIGHTS •Integration between food pyramid and gut microbiome. •Negative and positive effects of food on the gut microbiome using the food pyramid. •SCFA-s-producing bacteria and their effects on the gut microbiome.
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Introdução: Devido à escassez de pesquisas voltadas para a situação da cobertura vacinal no Nordeste, sobretudo no Maranhão, apresenta-se a necessidade de realizar uma análise comparativa entre os estados da região nordeste do Brasil. Objetivo: Analisar a cobertura vacinal entre os estados na Região Nordeste do Brasil entre 2017 a 2021, por meio da análise de dados secundários provenientes de sistemas de informação em saúde. Metodologia: trata-se de estudo ecológico de série temporal, com uso de dados secundários provenientes de sistemas de informação em saúde. Foi realizado por meio da coleta de dados disponibilizados pelo TABNET do Departamento de Informação e Informática do SUS (DATASUS), referentes ao período entre 2017 e 2021, nos estados da Região Nordeste do Brasil. Resultados: No período de 2017 a 2021 a cobertura vacinal na Região Nordeste do Brasil foi de 64,48%, sendo uma das piores do país, perdendo apenas para Região Norte (63,30%). Cabe salientar que a média no país em todo o período analisado foi de 68,57%, estando bem abaixo do ideal (entorno de 90% a 95% a depender do imunizante). E entre os anos de 2019 a 2020 houve um declínio de 12,05% e em 2021 14,87% da cobertura vacinal na região nordeste do país. Conclusão: Este estudo permitiu realizar uma análise comparativa entre os estados da região nordeste do Brasil com ênfase no estado do maranhão quanto à cobertura vacinal, onde foi observado que, o estado do Maranhão apresenta umas das menores taxas de vacinação em comparação com outros estados da região nordeste.
Introduction: Due to the lack of research focused on the situation of vaccination coverage in the Northeast, especially in Maranhão, there is a need to carry out a comparative analysis between the states of the northeast region of Brazil. Objective: To analyze vaccination coverage among states in the Northeast Region of Brazil between 2017 and 2021, through the analysis of secondary data from health information systems. Methodology: this is an ecological time series study, using secondary data from health information systems. It was carried out by collecting data provided by the TABNET of the Department of Information and Informatics of the SUS (DATASUS), referring to the period between 2017 and 2021, in the states of the Northeast Region of Brazil. Results: In the period from 2017 to 2021, vaccination coverage in the Northeast Region of Brazil was 64.48%, being one of the worst in the country, second only to the North Region (63.30%). It should be noted that the average in the country throughout the analyzed period was 68.57%, well below the ideal (around 90% to 95% depending on the immunizer). And between the years 2019 to 2020 there was a decline of 12.05% and in 2021 14.87% of vaccination coverage in the northeast region of the country. Conclusion: This study made it possible to carry out a comparative analysis between the states of the northeast region of Brazil, with emphasis on the state of maranhão regarding vaccination coverage, where it was observed that the state of Maranhão has one of the lowest vaccination rates compared to other states in the region. northeast region.
Introducción: Debido a la falta de investigaciones centradas en la situación de las coberturas de vacunación en el Nordeste, especialmente en Maranhão, surge la necesidad de realizar un análisis comparativo entre los estados de la región Nordeste de Brasil. Objetivo: Analizar las coberturas de vacunación entre los estados de la Región Nordeste de Brasil entre 2017 y 2021, a través del análisis de datos secundarios de los sistemas de información en salud. Metodología: se trata de un estudio de series temporales ecológicas, utilizando datos secundarios de los sistemas de información en salud. Fue realizado a partir de la recopilación de datos facilitados por el TABNET del Departamento de Información e Informática del SUS (DATASUS), referentes al período comprendido entre 2017 y 2021, en los estados de la Región Nordeste de Brasil. Resultados: En el período de 2017 a 2021, la cobertura de vacunación en la Región Nordeste de Brasil fue del 64,48%, siendo una de las peores del país, superada solo por la Región Norte (63,30%). Cabe señalar que el promedio en el país durante todo el período analizado fue de 68,57%, muy por debajo del ideal (alrededor de 90% a 95% dependiendo del inmunizador). Y entre los años 2019 a 2020 hubo un descenso de 12,05% y en 2021 de 14,87% de las coberturas de vacunación en la región nororiental del país. región nordeste. PALABRAS CLAVE: Cobertura de Vacunación; Vacunas; Enfermedades Prevenibles por Vacunas.
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Proton pump inhibitors (PPIs) are one of the most prescribed drugs around the world. PPIs induce microbiota modulation such as obesity both in humans and in animal models. However, since PPIs can induce microbiota modulation despite the absence of a high-fat diet or weight gain, it is an interesting model to correlate microbiota modulation with the establishment of non-alcoholic fatty liver disease (NAFLD). We investigated the effect of pantoprazole treatment on TLR4 signaling and liver histology in C57BL/6J mice for 60 days, trying to correlate microbiota modulation with some aspects of liver injury. We performed glucose (GTT) and insulin (ITT) tolerance tests, serum lipopolysaccharide (LPS) dosage, liver histology, liver and intestine extraction for Western blot and qPCR. Fecal microbiota were investigated via metagenomics. Chronic treatment with pantoprazole induced microbiota modulation and impaired ileum barrier integrity, without an association with insulin resistance. Furthermore, increased circulating LPS and increased Toll-like receptor 4 (TLR4) and TGFß downstream signaling may have an important role in the development of the observed liver microvesicular steatosis and fibrosis. Finally, this model of PPI-induced changes in microbiota might be useful to investigate liver microvesicular steatosis and fibrosis.
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Microbioma Gastrointestinal , Enfermedad del Hígado Graso no Alcohólico , Ratones , Humanos , Animales , Receptor Toll-Like 4/uso terapéutico , Pantoprazol/farmacología , Inhibidores de la Bomba de Protones/farmacología , Inhibidores de la Bomba de Protones/uso terapéutico , Lipopolisacáridos/farmacología , Ratones Endogámicos C57BL , Enfermedad del Hígado Graso no Alcohólico/tratamiento farmacológico , Enfermedad del Hígado Graso no Alcohólico/etiología , FibrosisRESUMEN
BACKGROUND: Gut microbiota profiles are closely related to cardiovascular diseases through mechanisms that include the reported deleterious effects of metabolites, such as trimethylamine N-oxide (TMAO), which have been studied as diagnostic and therapeutic targets. Moderate red wine (RW) consumption is reportedly cardioprotective, possibly by affecting the gut microbiota. OBJECTIVES: To investigate the effects of RW consumption on the gut microbiota, plasma TMAO, and the plasma metabolome in men with documented coronary artery disease (CAD) using a multiomics assessment in a crossover trial. METHODS: We conducted a randomized, crossover, controlled trial involving 42 men (average age, 60 y) with documented CAD comparing 3-wk RW consumption (250 mL/d, 5 d/wk) with an equal period of alcohol abstention, both preceded by a 2-wk washout period. The gut microbiota was analyzed via 16S rRNA high-throughput sequencing. Plasma TMAO was evaluated by LC-MS/MS. The plasma metabolome of 20 randomly selected participants was evaluated by ultra-high-performance LC-MS/MS. The effect of RW consumption was assessed by individual comparisons using paired tests during the abstention and RW periods. RESULTS: Plasma TMAO did not differ between RW intervention and alcohol abstention, and TMAO concentrations showed low intraindividual concordance over time, with an intraclass correlation coefficient of 0.049 during the control period. After RW consumption, there was significant remodeling of the gut microbiota, with a difference in ß diversity and predominance of Parasutterella, Ruminococcaceae, several Bacteroides species, and Prevotella. Plasma metabolomic analysis revealed significant changes in metabolites after RW consumption, consistent with improved redox homeostasis. CONCLUSIONS: Modulation of the gut microbiota may contribute to the putative cardiovascular benefits of moderate RW consumption. The low intraindividual concordance of TMAO presents challenges regarding its role as a cardiovascular risk biomarker at the individual level. This study was registered at clinical trials.gov as NCT03232099.
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Microbioma Gastrointestinal , Vino , Masculino , Humanos , Persona de Mediana Edad , Cromatografía Liquida , ARN Ribosómico 16S , Espectrometría de Masas en Tándem , Metilaminas , MetabolomaRESUMEN
Obesity and insulin resistance (IR) are well-studied risk factors for systemic cardiovascular disease, but their impact on pulmonary hypertension (PH) is not well clarified. This study aims to investigate if diet-induced obesity induces PH and if peroxisome-proliferator-activated receptor (PPAR-γ) and/or endoplasmic reticulum (ER) stress are involved in this process. Mice were maintained on a high-fat diet (HFD) for 4 months, and IR and PH were confirmed. In a separate group, after 4 months of HFD, mice were treated with pioglitazone (PIO) or 4-phenylbutyric acid for the last month. The results demonstrated that HFD for at least 4 months is able to increase pulmonary artery pressure, which is maintained, and this animal model can be used to investigate the link between IR and PH, without changes in ER stress in the pulmonary artery. There was also a reduction in circulating adiponectin and in perivascular adiponectin expression in the pulmonary artery, associated with a reduction in PPAR-γ expression. Treatment with PIO improved IR and PH and reversed the lower expression of adiponectin and PPAR-γ in the pulmonary artery, highlighting this drug as potential benefit for this poorly recognized complication of obesity.
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Dieta Alta en Grasa/efectos adversos , Estrés del Retículo Endoplásmico , Hipertensión Pulmonar/patología , Resistencia a la Insulina , Obesidad/complicaciones , PPAR gamma/antagonistas & inhibidores , Arteria Pulmonar/patología , Animales , Hipertensión Pulmonar/etiología , Hipertensión Pulmonar/metabolismo , Masculino , Ratones , Ratones Endogámicos C57BL , Ratones Obesos , PPAR gamma/genética , PPAR gamma/metabolismo , Arteria Pulmonar/metabolismoRESUMEN
This study aimed to investigate the impact of the food matrix (orange juice and yogurt) on the effects of the spore-forming probiotic microorganism Bacillus coagulans GBI-30 6086 in health parameters and gastrointestinal tract (gut) bacterial diversity in Wistar male rats. Rats (n = 48) were randomly distributed into six groups. The groups were the Control (which received sterile distilled water), Juice (which received orange juice), Yogurt (which received yogurt), Probiotic Bacillus (which received B. coagulans GBI-30 6086 in distilled water), Probiotic Juice (which received orange juice with B. coagulans GBI-30 6086), and Probiotic Yogurt (which received yogurt with B. coagulans GBI-30 6086). Each animal belonging to the different groups was treated for 21 days. The daily administration of probiotic juice or probiotic yogurt did not affect the rats' food or body weight. Rats fed with Probiotic Yogurt showed lower glucose and triglycerides levels (p < 0.05) in comparison to the control group (p < 0.05), while no changes in these parameters were observed in the rats fed with Probiotic Juice. Rats fed with Probiotic Yogurt showed a higher gut bacterial diversity than the control group (p < 0.05), and higher abundance (p < 0.05) of Vibrionales, Enterobacteriales, Burkholderiales, Erysipelotrichales, and Bifidobacteriales compared to all other groups. No changes were observed in the expression levels of antioxidant enzymes or heat shock protein 70 of rats fed with probiotic yogurt or probiotic juice. Results reveal that the consumption of yogurt containing B. coagulans GBI-30 6086 decreases triglycerides and glucose levels and positively impacts the gut bacterial ecology in healthy rats. These animal model findings indicate that the matrix also impacts the functionality of foods carrying spore-forming probiotics. Besides, this research indicates that yogurt is also a suitable food carrier of Bacillus coagulans GBI-30 6086.
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This study investigated the effects of feeding paraprobiotics obtained by six processes [heat, ultrasound, high pH, low pH, irradiation and supercritical carbon dioxide (CO2)] on biochemical parameters and intestinal microbiota of Wistar male rats. Daily administration of paraprobiotics did not affect (p ≥ 0.05) the food intake, body weight, glucose and triglycerides levels, expression of antioxidant enzymes or thermal shock proteins in comparison to the control. Bifidobacterium lactis inactivated by irradiation and supercritical CO2 decreased the total cholesterol levels in serum (p < 0.05). Bifidobacterium lactis inactivated by supercritical CO2 increased the albumin and creatinine levels, while decreased the HDL-cholesterol levels (p < 0.05). Clostridiales (45.6-56%), Bacteroidales (31.9-44.2%) and Lactobacillales (3.9-7.8%) corresponded to the major orders in paraprobiotic groups. The properties of paraprobiotics are dependent on the method of inactivation, the intensity of the method employed and on the strain used.
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Microbioma Gastrointestinal , Probióticos , Animales , Peso Corporal , Dióxido de Carbono , Colesterol/sangre , Calor , Concentración de Iones de Hidrógeno , Masculino , Radiación , Ratas , Ratas WistarRESUMEN
BACKGROUND: Our understanding of the pathophysiology of the COVID-19 manifestations and evolution has improved over the past 10 months, but the reasons why evolution is more severe in obese and diabetic patients are not yet completely understood. MAIN TEXT: In the present review we discuss the different mechanisms that may contribute to explain the pathophysiology of COVID-19 including viral entrance, direct viral toxicity, endothelial dysfunction, thromboinflammation, dysregulation of the immune response, and the renin-angiotensin-aldosterone system. CONCLUSIONS: We show that the viral infection activates an integrated stress response, including activations of serine kinases such as PKR and PERK, which induce IRS-1 serine phosphorylation and insulin resistance. In parallel, we correlate and show the synergy of the insulin resistance of COVID-19 with this hormonal resistance of obesity and diabetes, which increase the severity of the disease. Finally, we discuss the potential beneficial effects of drugs used to treat insulin resistance and diabetes in patients with COVID-19.
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This study investigated the effects of consumption of wheat-durum pasta added of Bifidobacterium animalis inactivated by gamma-irradiation (paraprobiotic) on health and gut microbiota of rats. Twenty-one male rats were divided into three groups as follow: control (Control) receiving standard diet; pasta control (PC) receiving diet containing pasta, and paraprobiotic pasta Bifidobacterium-irradiated (PPBI), receiving paraprobiotic pasta. The serum levels of glucose and total cholesterol were reduced (p < 0.05) in PPBI when compared to the Control (p < 0.05). PPBI showed high abundance (p Ë 0.05) of Firmicutes and Actinobacteria and a lower abundance of Bacteriodes compared to Control and PC. Besides, the PPBI showed high abundance (p Ë 0.05) of Clostridiales, Lactobacillales; Bifidobacteriales, Bacillales, and Coriobacteriales in comparison to Control. Specific genera such as Bifibacterium, Lactobacillus, Ruminococcus, Allobaculum, and Blautia were more related to PPBI. Findings reveal wheat-durum pasta as a potential vehicle for delivering paraprobiotics B. animalis.
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Bifidobacterium animalis , Dieta , Microbioma Gastrointestinal , Probióticos , Animales , Bifidobacterium , Glucemia , Colesterol/sangre , Clostridiales , Ratas , TriticumRESUMEN
INTRODUCTION: The relationship between late post-bariatric surgery weight regain and gut microbiota is not completely understood. OBJECTIVE: To analyze the profile of gut microbiota among patients with and without late weight regain after post-Roux-en-Y gastric bypass (RYGB) and to compare it with a control group (CG) comprised of obese Brazilian individuals. METHODS: This is a cross-sectional study which enrolled 34 morbidly obese women divided into 3 groups: post-Roux-en-Y gastric bypass without (RYGB_non-regain), and with weight regain (RYGB_regain) at least 5 years after surgery, and a CG of preoperative individuals. Gut microbiota was determined by metagenomic analyses. RESULTS: The alpha diversity was higher in groups RYGB non-regain and RYGB regain when compared with CG (p < 0.05). Both RYGB non-regain and RYGB regain groups showed a lower abundance of the phylum Bacteroidetes when compared with CG (p < 0.01). The genera Bacteroides and SMB53 were increased in CG (p < 0.05). Group RYGB non-regain showed more abundance of the Akkermansia genus when compared with CG and group RYGB regain (p < 0.05). RYGB non-regain showed a greater abundance of the Phascolarctobacterium genus and lower of the SMB53 genus when compared with CG (p < 0.05). RYGB non-regain showed a greater abundance of the Phascolarctobacterium genus and a lower of the SMB53 genus when compared with CG (p < 0.05). CONCLUSION: The gut microbiota of individuals which presented late weight regain after RYGB was significantly different in comparison to individuals with a successful weight loss, a finding that points towards a significant role of gut microbiota on weight loss and maintenance after surgery.
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Derivación Gástrica , Microbioma Gastrointestinal , Obesidad Mórbida , Brasil , Estudios Transversales , Femenino , Humanos , Obesidad Mórbida/cirugía , Aumento de PesoRESUMEN
Imigração é um assunto que tem recebido atenção nos últimos anos, cerca de 774.000 imigrantes foram registrados até o ano de 2018, e dentre as nacionalidades mais frequentes está a haitiana. O objetivo deste estudo foi relatar o aperfeiçoamento da atenção odontológica ao paciente haitiano e melhoria no acesso à Unidade de Básica de Saúde por meio de tradução dos termos odontológicos. Inicialmente foi realizado o reconhecimento territorial da área de abrangência da UBS, onde constatou-se que a Unidade Básica de Saúde assistia 470 imigrantes haitianos. A equipe elaborou e distribuiu a população cartilhas e panfletos para que a população em geral conhecesse sobre a cultura haitiana, simultaneamente realizou-se a tradução fichas de agendamento, anamnese, placas de identificação do consultório e de normas de segurança além de uma ficha de auto percepção do paciente sobre sua saúde bucal, sendo que estas foram aplicadas durante os atendimentos clínicos. Após seis meses foi realizado um levantamento com imigrantes e profissionais de saúde e constatou-se que à partir desta experiência houve redução significativa da barreira de comunicação, e consequentemente houve melhora no acolhimento dos pacientes. O aperfeiçoamento dos serviços e a adequação dos servidores foi de extrema importância para melhorar o contato entre profissionais da saúde e imigrantes, além da formação interprofissional, e fortalecimento da integração ensino-serviço-comunidade. (AU)
Nowadays immigration has been received much attention, circa of 774,000 immigrants has been registered until 2018, and one of the most frequently nationality registered is the Haitian. The aim of this study is to report the improvement of dental care and access to the Health Basic Unit to Haitian patients. At first, we did a territorial recognition, and verified that the Health Basic Unit assisted 470 Haitian immigrants. The team elaborated and distributed flyers to the general population containing informations about Haitian culture, and translated to Haitian dialect, schedule sheets, anamneses sheets, identification e security plates, and oral health self-perception sheets, and applied them to the dental consultations. After six months through an interview with immigrants and health team, we verified that from this experience promoted significant communication barrier reduction, and improvement of embracement of patients. The development of health services and health team was important to improve the professional-patient relationship, promoted interprofessional training and teaching-service-community strengthening. (AU)
La inmigración es un tema que ha recibido atención en los últimos años, alrededor de 774,000 inmigrantes se registraron hasta 2018, y una de las nacionalidades más frecuentes es la haitiana. El objetivo de este estudio fue informar la mejora de la atención dental para pacientes haitianos y un mejor acceso a la Unidad Básica de Salud a través de la traducción de términos dentales. Inicialmente, se realizó el reconocimiento territorial del área de cobertura de la UBS, donde se descubrió que la Unidad Básica de Salud asistió a 470 inmigrantes haitianos. El equipo preparó y distribuyó los folletos y folletos de la población para que la población en general pudiera aprender sobre la cultura haitiana, al mismo tiempo que se llevó a cabo la traducción de las hojas de programación, anamnesis, identificación de la oficina y placas de seguridad y un formulario de registro de automóviles. percepción del paciente sobre su salud bucal, que se aplicaron durante la atención clínica. Después de seis meses, se realizó una encuesta con inmigrantes y profesionales de la salud y se descubrió que a partir de esta experiencia hubo una reducción significativa en la barrera de comunicación y, en consecuencia, hubo una mejora en la recepción de pacientes. La mejora de los servicios y la adecuación de los funcionarios públicos fue extremadamente importante para mejorar el contacto entre los profesionales de la salud y los inmigrantes, además de la capacitación interprofesional y el fortalecimiento de la integración de la enseñanza-servicio-comunidad.
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Emigración e Inmigración , Atención Odontológica , Sociedad Receptora de MigrantesRESUMEN
Anthropogenic activities promote changes in community structure and decrease the species abundance of amphibians. The aim of this study was to assess potential alterations in the antioxidant system and cholinesterase activity, histopathological and oxidative damage in Lithobates catesbeianus tadpoles exposed to water from the Cascavel River, in Southern Brazil. Water samples (140 L each) were collected from the headwater, urban and rural areas of the river. Tadpoles were acclimated for seven days. After acclimatization tadpoles were reared in water from the river, except for the control aquarium. After seven days, a portion of the liver was removed and prepared for cholinesterase (ChE), superoxide dismutase (SOD), catalase (CAT) and lipid peroxidation (LPO) analysis; another part of the tissue was prepared for histological examination. An elevation of CAT activity was observed for water from both urban and rural environments. A decrease in LPO reaction was detected, mainly among the tadpoles exposed to water from the rural area. These alternations can cause delay the metamorphosis and lead to metabolic dysfunction, interfering in survival capacity and diminishing, not only individual fitness, but that of the whole population.
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Antioxidantes/metabolismo , Colinesterasas/metabolismo , Rana catesbeiana/fisiología , Contaminantes Químicos del Agua/toxicidad , Animales , Brasil , Larva/fisiología , Peroxidación de Lípido , Metamorfosis Biológica/efectos de los fármacos , Ríos , Contaminantes Químicos del Agua/metabolismoRESUMEN
BACKGROUND: Obesity has been linked to gastrointestinal disorders, and the loss of myenteric neurons in the intestine caused by high-fat diets (HFD) has been attributed to changes in microbiota and lipotoxicity. We investigated whether the prebiotic inulin modulates bacterial populations and alleviates neuronal loss in mice fed HFD. METHODS: Swiss mice were fed purified rodent diet or HFD (59% kcal fat), or both diets supplemented with inulin for 17 weeks. Intestinal motility was assessed and a metagenome analysis of the colonic microbiota was performed. The gene expression of inflammatory markers was evaluated, and immunofluorescence was performed for different types of myenteric neurons and glial cells in the distal colon. KEY RESULTS: The HFD caused obesity and delayed colonic motility. The loss of myenteric neurons and glial cells in obese mice affected all of the studied neuronal populations, including neurons positive for myosin-V, neuronal nitric oxide synthase, vasoactive intestinal peptide, and calretinin. Although obese mice supplemented with inulin exhibited improvements in colonic motility, neuronal, and glial cell loss persisted. The HFD did not altered the expression levels of inflammatory cytokines in the intestine or the prevalence of the major groups in microbiota, but inulin increased the proportion of the genus Akkermansia in the obese mice. CONCLUSIONS AND INFERENCES: In Swiss mice, the HFD-induced neuronal loss but did not change the major groups in microbiota. This suggests that, despite the increase in the beneficial bacteria, other factors that are directly linked to excess dietary lipid intake affect the enteric nervous system.
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Dieta Alta en Grasa/efectos adversos , Microbioma Gastrointestinal , Plexo Mientérico/patología , Neuronas/patología , Obesidad/patología , Animales , Motilidad Gastrointestinal/fisiología , Inulina/farmacología , Masculino , Ratones , Obesidad/etiología , Probióticos/farmacologíaRESUMEN
Previous studies have demonstrated that patients with Crohn's disease (CD) in remission do not exhibit an improvement in gut microbiota composition, which might trigger relapses. The present study investigated the dysbiosis and mucins production in CD patients during remission. We performed an analytical cross-sectional single center study, which recruited 18 CD patients and 18 healthy controls (CG) residing in the same home, meaning that all of the participants experienced the same environmental factors, with similar hygiene status, diet, pollution and other common lifestyle characteristics that may influence the composition of the gut microbiota. When compared to healthy controls, the CD patients exhibited lower microbial α-diversity (p = 0.047), a greater abundance of the Proteobacteria phylum (p = 0.037) and a reduction in the Deltaproteobacteria class (p = 0.0006). There was also a reduction in the Akkermansia (p = 0.002) and Oscillospira (p = 0.024) genera and in the proportion of the yeast Saccharomyces cerevisiae (p = 0.01). Additionally, CD patients in remission presented increased neutral (p = 0.001) and acid mucin (p = 0.002) concentrations. The reductions in the proportions of Oscollospira and Akkermansia genera, sulfate-reducing bacteria and Saccharomyces cerevisiae, observed in the CD group, may account for the increased mucins production observed in these patients.