Sífilis congênita no Paraná e em suas cidades gêmeas: enfoque em Foz do Iguaçu / Congenital syphilis in Paraná and its twin cities: focus on Foz do Iguaçu / Sífilis congénita en Paraná y sus ciudades gemelas: foco en Foz de Iguazú

Objetivo: analisar a ocorrência de sífilis congênita no Paraná e suas cidades gêmeas, com enfoque em Foz do Iguaçu. Método: estudo transversal, retrospectivo, de abordagem quantitativa, com base em dados secundários coletados no Sistema de Informação de Agravos de Notificação entre 2011 e 2020. Foram calculadas as taxas de incidência de sífilis congênita por 1.000 nascidos vivos. Resultados: no Paraná, foram notificados 6.088 casos de sífilis congênita. Desses, 338 foram em suas cidades gêmeas. A cidade com maior número de casos foi Foz do Iguaçu com 320 casos. No Paraná e em Foz do Iguaçu, as taxas médias de incidência anual foram de 3,9 e 7,3 casos/1.000 nascidos vivos (p<0,05), respectivamente. As características maternas de maior relevância foram diagnóstico de sífilis durante o pré-natal (65,9%) e com tratamento inadequado (41,3%) (p<0,05). Conclusão: as características maternas relacionadas a sífilis congênita requerem melhoria do acompanhamento pré-natal e viabilização de políticas públicas transfronteiriças(AU)

Objective: to analyze the occurrence of congenital syphilis in Paraná and its twin cities, with a focus on Foz do Iguaçu. Method: cross-sectional, retrospective study with a quantitative approach, based on secondary data collected in the Notifiable Diseases Information System between 2011 and 2020. The incidence rates of congenital syphilis per 1,000 live births were calculated. Results: in Paraná, 6,088 cases of congenital syphilis were reported. Of these, 338 were in its twin cities. The city with the highest number of cases was Foz do Iguaçu with 320 cases. In Paraná and Foz do Iguaçu, the average annual incidence rates were 3.9 and 7.3 cases/1,000 live births (p<0.05), respectively. The most relevant maternal characteristics were diagnosis of syphilis during prenatal care (65.9%) and inadequate treatment (41.3%) (p<0.05). Conclusion: maternal characteristics related to congenital syphilis require improvement in prenatal care and the feasibility of cross-border public policies(AU)

Objetivo: analizar la ocurrencia de sífilis congénita en Paraná y sus ciudades gemelas, con foco en Foz de Iguazú. Método: estudio transversal, retrospectivo, con enfoque cuantitativo, basado en datos secundarios recopilados en el Sistema de Información de Agravios, notificación entre 2011 y 2020. Se calcularon las tasas de incidencia de sífilis congénita por 1.000 nacidos vivos. Resultados: en Paraná se notificaron 6.088 casos de sífilis congénita. De ellos, 338 estaban en sus ciudades gemelas. La ciudad con mayor número de casos fue Foz de Iguazú con 320 casos. En Paraná y Foz de Iguazú, en promedio, las tasas de incidencia anual fueron de 3,9 y 7,3 casos/1.000 nacidos vivos (p<0,05), respectivamente. Las características maternas más relevantes fueron el diagnóstico de sífilis durante el control prenatal (65,9%) y el tratamiento inadecuado (41,3%) (p<0,05). Conclusión: las características maternas relacionadas con la sífilis congénita requieren la mejora de la atención prenatal y la implementación de políticas públicas transfronterizas(AU)

Sífilis congênita em regiões de fronteira internacional brasileira: uma realidade preocupante / Congenital syphilis in brazilian international border regions: a worrisome reality / La sífilis congénita en las regiones fronterizas internacionales de brasil: una realidad preocupante

Este estudo objetivou verificar o número de casos de sífilis congênita (SC) diagnosticada em crianças até um ano de idade no Brasil, com ênfase no estado e na cidade gêmea com maior número de casos e investigar os aspectos sócio-demográficos e clínicos. Estudo descritivo, retrospectivo e com abordagem quantitativa, desenvolvido a partir de dados secundários do período de 2011 a 2020 no Brasil e em regiões de fronteira internacional do país. Os dados foram obtidos através do Sistema de Informação de Agravos de Notificação. As taxas de incidência de SC foram calculadas pela constante 1.000. Foram notificados no Brasil 190.034 casos de SC, 43.016 casos foram em estados com fronteira internacional. O estado fronteiriço que apresentou o maior número de casos foi o Rio Grande do Sul (14.617) e a sua cidade gêmea, Uruguaiana (167), com taxa média de incidência anual de 13,2 e 12,3 casos/1.000 nascidos vivos (p<0,05). Observou-se predominância de gestantes com 20 a 29 anos 53,2%, baixo nível escolar 28,1% (p<0,05), cor da pele, branca 58,1%, realizou pré-natal 92,8% (p>0,05), diagnosticadas com sífilis durante o pré-natal 69,4% e com tratamento inadequado 39,5% (p<0,05). A faixa etária das crianças com SC foi em menores de sete dias de vida 95,2% e diagnosticadas como SC recente 95,2% (p>0,05). O número de casos notificados de SC no Brasil e em regiões de fronteira e os fatores contribuintes evidenciados, indicam a necessidade de melhoria do acompanhamento pré-natal e criação de políticas públicas direcionadas à redução e/ou erradicação de casos.

This study aimed to verify the number of cases of congenital syphilis (CS) diagnosed in children up to one year of age in Brazil, with emphasis on the state and the twin city with the highest number of cases and to investigate the socio-demographic and clinical aspects. Descriptive study, retrospective study with a quantitative approach, developed from secondary data from 2011 to 2020 in Brazil and in international border regions of the country. Data were obtained through the Notifiable Diseases Information System. The CS incidence rates were calculated by the constant 1000. Were notified in Brazil 190,034 cases of CS, 43,016 cases were in international border states. The state with the highest number of cases was Rio Grande do Sul (14,617) and its twin city, Uruguaiana (167), with an average annual incidence rate of 13.2 and 12.3 cases/1,000 live births (p<0.05). There was a predominance of pregnant women aged 20 to 29 years 53.2%, low schooling 28.1% (p<0.05) and skin color, white 58.1%, attended prenatal 92.8% (p>0.05), diagnosed with syphilis during prenatal care 69.4% and with inadequate treatment 39,5% (p<0.05). The age range of children with CS was under seven days of life 95.2% and diagnosed as recent CS 95.2% (p>0.05). The number of reported cases of CS in Brazil and in international border regions and the contributing factors evidenced indicate the need to improve prenatal care and create public policies aimed at reducing and/or erradicating cases.

Este estudio tuvo como objetivo verificar el número de casos de sífilis congénita (SC) diagnosticados en niños de hasta un año de edad en Brasil, con énfasis en el estado y la ciudad gemela con mayor número de casos e investigar los aspectos sociodemográficos y clínicos. Estudio descriptivo, retrospectivo y con enfoque cuantitativo, desarrollado a partir de datos secundarios del período 2011 a 2020 en Brasil y en regiones fronterizas internacionales del país. Los datos se obtuvieron a través del Sistema de Información de Agravios de Notificación. Las tasas de incidencia del SC se calcularon mediante la constante 1.000. En Brasil se notificaron 190.034 casos de SC, 43.016 de ellos en estados con frontera internacional. El estado fronterizo con mayor número de casos fue Rio Grande do Sul (14.617) y su ciudad gemela, Uruguaiana (167), con una tasa de incidencia media anual de 13,2 y 12,3 casos/1.000 nacidos vivos (p<0,05). Se observó predominio de embarazadas de 20 a 29 años 53,2%, nivel de escolaridad bajo 28,1% (p<0,05), color de piel, blanca 58,1%, realizado prenatal 92,8% (p>0,05), diagnosticada de sífilis durante el prenatal 69,4% y con tratamiento inadecuado 39,5% (p<0,05). El rango de edad de los niños con CS fue de menos de siete días de vida 95,2% y diagnosticado como CS reciente 95,2% (p>0,05). El número de casos reportados de SC en Brasil y en las regiones fronterizas y los factores contribuyentes evidenciados, indican la necesidad de mejorar la atención prenatal y la creación de políticas públicas dirigidas a la reducción y/o erradicación de los casos.

Protective effects of quercetin-loaded microcapsules on the enteric nervous system of diabetic rats.

Quercetin-loaded microcapsules (QLM) promote controlled release and higher bioavailability of quercetin, an antioxidant and neuroprotective agent. We evaluated the antioxidant effect of QLM on enteric innervation and in the oxidative status of the ileum of diabetic rats. Wistar adult rats (Rattus norvegicus) were used in six groups containing normoglycemic (N), diabetic (D) and either normoglycemic or diabetic groups treated with QLM at a dose of 10 mg/kg (NQ10 and DQ10, respectively) or 100 mg/kg (NQ100 and DQ100, respectively). DQ10 e DQ100 did not prevent overall neuronal loss in the total and cholinergic populations. Nitrergic population showed differences regarding the treatments: DQ10 preserved neurons in the nitrergic population whilst DQ100 increased nitrergic loss. Evaluation of the redox status showed pro-oxidant effects in NQ100 by t-butyl-induced chemiluminescence analysis. We observed a reduction in the carbonylic content and an increase of low molecular weight antioxidants for DQ10 e DQ100. Therefore, QLM treatment at a dose of 10 mg/kg acted positively on nitrergic neurons reducing oxidative damage induced by diabetes.

Family experiences in discovering Autism Spectrum Disorder: implications for family nursing.

OBJECTIVES: to describe the family's experience in the process of discovering the diagnosis and initiation of treatment of children with Autism Spectrum Disorder. METHODS: this qualitative and descriptive study interviewed nine relatives of eight children on autism spectrum. They were inserted in health services, public education, and Association of Parents and Friends of The Exceptional of cities in the countryside of the Center-West. Data were collected through open interviews from July to September 2017. Data was submitted to thematic analysis. RESULTS: at the beginning, the family was difficult to perceive the first atypical signs presented by the children. Families experience situations of vulnerability, since support networks are insufficient. The school played a significant role in recognizing unexpected behaviors. FINAL CONSIDERATIONS: support, offered by nurses, health professionals, school and social support devices, is important to family and children in this trajectory.

Family experiences in discovering Autism Spectrum Disorder: implications for family nursing / Experiencias familiares em el descubrimiento del Transtorno del Espectro Autista: implicaciones para la enfermeira familiar / Vivências familiares na descoberta do Transtorno do Espectro Autista: implicações para a enfermagem familiar

abstract Objectives: to describe the family's experience in the process of discovering the diagnosis and initiation of treatment of children with Autism Spectrum Disorder. Methods: this qualitative and descriptive study interviewed nine relatives of eight children on autism spectrum. They were inserted in health services, public education, and Association of Parents and Friends of The Exceptional of cities in the countryside of the Center-West. Data were collected through open interviews from July to September 2017. Data was submitted to thematic analysis. Results: at the beginning, the family was difficult to perceive the first atypical signs presented by the children. Families experience situations of vulnerability, since support networks are insufficient. The school played a significant role in recognizing unexpected behaviors. Final Considerations: support, offered by nurses, health professionals, school and social support devices, is important to family and children in this trajectory.

resumen Objetivos: describir la experiencia de la familia en el proceso de descubrir el diagnóstico y comenzar el tratamiento para niños con Trastorno del Espectro Autista. Métodos: estudio cualitativo, descriptivo, que entrevistó a nueve miembros de la familia de ocho niños en el espectro del autismo, insertado en los servicios de salud, educación pública y Asociación de Padres y Amigos de Personas con Discapacidad de ciudades en el interior de la región centro-oeste. La recolección de datos se realizó a través de entrevistas abiertas, de julio a septiembre de 2017. Los datos se sometieron a análisis temático. Resultados: al principio, la familia tuvo dificultades para percibir los primeros signos atípicos presentados por los niños. Las familias experimentan situaciones de vulnerabilidad, ya que las redes de apoyo son insuficientes. La escuela jugó un papel importante en el reconocimiento de comportamientos inesperados. Consideraciones Finales: se enfatiza la importancia del apoyo para la familia y los niños en esta trayectoria ofrecida por enfermeras, profesionales de la salud, dispositivos escolares y de apoyo social.

RESUMO Objetivos: descrever a vivência da família no processo de descoberta do diagnóstico e início do tratamento de crianças com Transtorno do Espectro Autista. Métodos: estudo qualitativo, descritivo, que entrevistou nove familiares de oito crianças no espectro do autismo, inseridos nos serviços de saúde, educação pública e Associação de Pais e Amigos dos Excepcionais de municípios do interior da região centro-oeste. A coleta de dados foi realizada por entrevistas abertas, nos meses de julho a setembro de 2017. Os dados foram submetidos à análise temática. Resultados: no início, houve dificuldade da família na percepção dos primeiros sinais atípicos apresentados pelas crianças. As famílias vivenciam situações de vulnerabilidade, visto que redes de apoio são insuficientes. A escola teve papel significativo no reconhecimento de comportamentos inesperados. Considerações Finais: ressalta-se a importância do suporte à família e crianças nessa trajetória oferecido por enfermeiros, profissionais de saúde, escola e dispositivos de suporte social.

Supplementation with l-glutathione improves oxidative status and reduces protein nitration in myenteric neurons in the jejunum in diabetic Rattus norvegicus.

Diabetes mellitus is a syndrome with multiple etiologies, characterized by chronic hyperglycemia that increases the production of reactive oxygen species and decreases antioxidant defenses. The present study evaluated oxidative stress parameters and protein nitration in myenteric neurons in the jejunum in diabetic rats supplemented with l-glutathione. Rats (90 days of age) were distributed into four groups (n = 6/group): normoglycemic (N), normoglycemic supplemented with l-glutathione (NGT), diabetic (D), and diabetic supplemented with l-glutathione (DGT). At 210 days of age, the animals were sacrificed, and the jejunum was collected, washed, and subjected to various procedures: tert-butyl hydroperoxide chemiluminescence (CL), determination of total antioxidant capacity (TAC), determination of catalase activity, quantification of nitric oxide (NO), and double-labeling of HuC/D-immunoreactive myenteric neurons and nitrotyrosine (3-NT). Diabetes increased oxidative stress in the jejunum in the D group, reflected by increases in lipid peroxidation, TAC, catalase activity, and NO. The D group exhibited an increase in the percentage of myenteric neurons that were double-labeled with 3-NT. Supplementation with l-glutathione did not cause differences in the average CL curves between the D and DGT groups, but reductions of TAC and catalase activity were observed. Supplementation with l-glutathione promoted a reduction of neurons that contained 3-NT in the DGT group. Diabetes mellitus promoted oxidative stress in the jejunum, and supplementation with l-glutathione improved oxidative status by preventing protein nitration in myenteric neurons in diabetic animals that received supplementation.

Acute infection with an avirulent strain of Toxoplasma gondii causes decreasing and atrophy of nitrergic myenteric neurons of rats.

In the enteric nervous system (ENS), nitrergic neurons produce and use nitric oxide (NO) as an inhibitory motor neurotransmitter in response to parasitic infections, including those caused by Toxoplasma gondii. However, damage to the host caused by NO has been reported by various authors, and the role of NO in protection or cytotoxicity continues to be extensively studied. In this study, nitrergic neurons were investigated in the myenteric plexus of the jejunum and the distal colon of rats infected with 500 oocysts of the M7741 strain of T. gondii. Ten rats were randomly assigned into a control group (CG) and infected group (IG; received 500 sporulated oocysts of T. gondii orally). After 24h, the rats were euthanized, and samples of the jejunum and distal colon were obtained and processed for NADPH-diaphorase histochemical analysis. Quantitative and morphometric analysis of the nitrergic neurons in whole mounts containing the myenteric plexus was performed. There was a numeric reduction of nitrergic neurons per mm2 in both jejunum and distal colon. The remaining nitrergic neurons suffered atrophy in the areas of the cell body and nucleus, which resulted in a decrease in cytoplasm. Thus, we conclude that an avirulent strain of T. gondii in a short time causes neuroplastic changes in the small and large intestine of rats.

l-Glutamine supplementation promotes an improved energetic balance in Walker-256 tumor-bearing rats.

We evaluated the effects of supplementation with oral l-glutamine in Walker-256 tumor-bearing rats. A total of 32 male Wistar rats aged 54 days were randomly divided into four groups: rats without Walker-256 tumor, that is, control rats (C group); control rats supplemented with l-glutamine (CG group); Walker-256 tumor rats without l-glutamine supplementation (WT group); and WT rats supplemented with l-glutamine (WTG group). l-Glutamine was incorporated into standard food at a proportion of 2 g/100 g (2%). After 10 days of the experimental period, the jejunum and duodenum were removed and processed. Protein expression levels of key enzymes of gluconeogenesis, that is, phosphoenolpyruvate carboxykinase and glucose-6-phosphatase, were analyzed by western blot and immunohistochemical techniques. In addition, plasma corticosterone, glucose, insulin, and urea levels were evaluated. The WTG group showed significantly increased plasma glucose and insulin levels ( p < 0.05); however, plasma corticosterone and urea remained unchanged. Moreover, the WTG group showed increased immunoreactive staining for jejunal phosphoenolpyruvate carboxykinase and increased expression of duodenal glucose-6-phosphatase. Furthermore, the WTG group presented with less intense cancer cachexia and slower tumor growth. These results could be attributed, at least partly, to increased intestinal gluconeogenesis and insulinemia, and better glycemia maintenance during fasting in Walker-256 tumor rats on a diet supplemented with l-glutamine.

Antioxidant Effects of the Quercetin in the Jejunal Myenteric Innervation of Diabetic Rats.

PURPOSE: Enteric glial cells (EGCs) exert a critical role in the structural integrity, defense, and metabolic function of enteric neurons. Diabetes mellitus is a chronic disease characterized by metabolic disorders and chronic autonomic neuropathy. Quercetin supplementation, which is a potent antioxidant, has been used in order to reduce the effects of diabetes-induced oxidative stress. The purpose of this research was to investigate the effects of quercetin supplementation in the drinking water at a daily dose of 40 mg on the glial cells and neurons in the jejunum of diabetic rats. MATERIALS AND METHODS: Twenty 90-day-old male adult Wistar rats were split into four groups: normoglycemic control (C), normoglycemic control supplemented with quercetin (Q), diabetic (D), and diabetic supplemented with quercetin (DQ). After 120 days, the jejunums were collected, and immunohistochemical technique was performed to label S-100-immunoreactive glial cells and HuC/D-immunoreactive neurons. RESULTS: An intense neuronal and glial reduction was observed in the jejunum of diabetic rats. Quercetin displayed neuroprotective effects due to reduced cell body areas of neurons and glial cells in Q and DQ groups compared to their controls (C and D groups). Interestingly, quercetin prevented the glial and neuronal loss with a higher density for the HuC/D-immunoreactive neurons (23.06%) and for the S100-immunoreactive glial cells (14.55%) in DQ group compared to D group. CONCLUSION: Quercetin supplementation promoted neuroprotective effects through the reduction of neuronal and glial body areas and a slight prevention of neuronal and glial density reduction.

Morphoquantitative study of Rattus norvegicus submucosal plexus by different neuronal evidentiation histochemical techniques / Estudio morfocuantitativo del plexo submucoso de Rattus norvegicus por medio de diferentes técnicas histoquímicas para verificar características neuronales

Enteric nervous plexuses have been the object of several studies, specially the myenteric plexus whose studies describe its organization, functions and alterations. On the other hand, the submucosal plexus has been less studied and still needs descriptive studies. To analyze morphologically and quantitatively submucosal neurons of the jejunum of 90-day-old healthy rats using different techniques for neuronal staining as a way to provide normality data to compare with future experimental studies. Whole mount preparations of the jejunum were submitted to Giemsa, NADH-diaphorase and NADPH-diaphorase techniques to stain the total neuronal population, more metabolically active subpopulation and subpopulation of nitrergic neurons, respectively. Neurons of the submucosal plexus of adult rats are mainly organized in ganglia with varied sized and shapes. Giemsa technique stained 243.93 ± 7.68 neurons per mm2. Regarding the total population stained by Giemsa, NADH- diaphorase positive (139.09 ± 11.14/mm2) neurons represented 57 % and NADPH-diaphorase positive (18.17 ± 0.28/mm2) represented 7.5 %. The area of the cell body was bigger in nitrergic neurons (412.29 ± 150.22) than in the ones stained by Giemsa (254.71 ± 63.32) and NADH-diaphorase positive (243.98 ± 123.82).

El plexo nervioso entérico ha sido objeto de varios estudios, especialmente el plexo mientérico, cuyos estudios consisten en describir su organización, funciones y alteraciones. Por otro lado, el plexo submucoso ha sido menos investigado y todavía necesita estudios descriptivos. Para analizar morfológica y cuantitativamente las neuronas de la submucosa del yeyuno de ratas de 90 días de edad, se realizaron diferentes técnicas de tinción neuronales, en animales sanos, como una forma de proporcionar datos de normalidad y compararlo con futuros estudios experimentales. Se realizaron montajes con preparados enteros del yeyuno que fueron sometidos a las técnicas de Giemsa, de NADPH-diaforasa y NADH-diaforasa para teñir la población total neuronal, subpoblación más activa metabólicamente y subpoblación de neuronas nitrérgicas, respectivamente. Las neuronas del plexo submucoso de ratas adultas se organizan principalmente en los ganglios con variaciones de tamaño y formas. Con la técnica de Giemsa se tiñeron 243.93±7.68 neuronas por mm2. Con respecto a la población total teñida con Giemsa, fueron positivas para NADH- diaforasa en 139.09 ±11.14 / mm2 neuronas, representando el 57% y fueron positivas para NADPH-diaforasa en 18,17 ± 0,28 / mm2 neuronas, lo que representó el 7,5%. El área del cuerpo celular fue mayor en neuronas nitrérgicas (412,29 ± 150.22) que en las teñidas con Giemsa (254,71 ± 63,32) y NADH-diaforasa positivas (243,98 ± 123,82).

Supplementation with L-glutamine prevents tumor growth and cancer-induced cachexia as well as restores cell proliferation of intestinal mucosa of Walker-256 tumor-bearing rats.

This study aimed to evaluate the intestinal mucosa of the duodenum and jejunum of Walker-256 tumor-bearing rats supplemented with L-glutamine. Thirty-two male 50-day-old Wistar rats (Rattus norvegicus) were randomly divided into four groups: control (C), control supplemented with 2 % L-glutamine (GC), Walker-256 tumor (WT), and Walker-256 tumor supplemented with 2 % L-glutamine (TWG). Walker-256 tumor was induced by inoculation viable tumor cells in the right rear flank. After 10 days, celiotomy was performed and duodenal and jejunal tissues were removed and processed. We evaluated the cachexia index, proliferation index, villus height, crypt depth, total height of the intestinal wall, and number of goblet cells by the technique of periodic acid-Schiff (PAS). Induction of Walker-256 tumor promoted a reduction of metaphase index in the TW group animals, which was accompanied by a reduction in the villous height and crypt depths, resulting in atrophy of the intestinal wall as well as increased PAS-positive goblet cells. Supplementation with L-glutamine reduced the tumor growth and inhibited the development of the cachectic syndrome in animals of the TWG group. Furthermore, amino acid supplementation promoted beneficial effects on the intestinal mucosa in the TWG animals through restoration of the number of PAS-positive goblet cells. Therefore, supplementation with 2 % L-glutamine exhibited a promising role in the prevention of tumor growth and cancer-associated cachexia as well as restoring the intestinal mucosa in the duodenum and jejunum of Walker-256 tumor-bearing rats.

Desired and side effects of the supplementation with l-glutamine and l-glutathione in enteric glia of diabetic rats.

BACKGROUND/AIMS: Enteric neuropathy associated with Diabetes Mellitus causes dysfunction in the digestive system, such as: nausea, diarrhea, constipation, vomiting, among others. The aim of this study was to compare the effects of supplementation with 2% l-glutamine and 1% l-glutathione on neurons and enteric glial cells of ileum of diabetic rats. METHODS: Thirty male Wistar rats have been used according to these group distributions: Normoglycemic (N), Normoglycemic supplemented with l-glutamine (NG), Normoglycemic supplemented with l-glutathione (NGO), Diabetic (D), Diabetic supplemented with l-glutamine (DG) and Diabetic supplemented with l-glutathione (DGO). After 120days, the ileum was processed for immunohistochemistry of HuC/D and S100ß. Quantitative and morphometric analysis have been performed. RESULTS: Diabetic rats presented a decrease in the number of neurons when compared to normoglycemic animals. However, diabetes was not associated with a change in glial density. l-Glutathione prevented the neuronal death in diabetic rats. l-Glutathione increased a glial proliferation in diabetic rats. The neuronal area in diabetic rats increased in relation to the normoglycemics. The diabetic rats supplemented with l-glutamine and l-glutathione showed a smaller neuronal area in comparison to diabetic group. The glial cell area was a decreased in the diabetics. The diabetic rats supplemented with l-glutamine and l-glutathione did not have significant difference in the glial cell body area when compared to diabetic rats. CONCLUSION: It is concluded that the usage of l-glutamine and l-glutathione as supplements presents both desired and side effects that are different for the same substance in considering normoglycemic or diabetic animals.

Chronic infection with Toxoplasma gondii induces death of submucosal enteric neurons and damage in the colonic mucosa of rats.

Intestinal epithelial secretion is coordinated by the submucosal plexus (SMP). Chemical mediators from SMP regulate the immunobiological response and direct actions against infectious agents. Toxoplasma gondii is a worldwide parasite that causes toxoplasmosis. This study aimed to determine the effects of chronic infection with T. gondii on the morphometry of the mucosa and the submucosal enteric neurons in the proximal colon of rats. Male adult rats were distributed into a control group (n = 10) and an infected group (n = 10). Infected rats received orally 500 oocysts of T. gondii (ME-49). After 36 days, the rats were euthanized and samples of the proximal colon were processed for histology to evaluate mucosal thickness in sections. Whole mounts were stained with methylene blue and subjected to immunohistochemistry to detect vasoactive intestinal polypeptide. The total number of submucosal neurons decreased by 16.20%. Vasoactive intestinal polypeptide-immunoreactive neurons increased by 26.95%. Intraepithelial lymphocytes increased by 62.86% and sulfomucin-producing goblet cells decreased by 22.87%. Crypt depth was greater by 43.02%. It was concluded that chronic infection with T. gondii induced death and hypertrophy in the remaining submucosal enteric neurons and damage to the colonic mucosa of rats.

Vitamins C and E (ascorbate/α-tocopherol) provide synergistic neuroprotection in the jejunum in experimental diabetes.

The present study evaluated the synergistic effects of the association of ascorbic acid and α-tocopherol on myenteric in the jejunum of diabetic rats. The rats were randomly divided into four equal groups: untreated normoglycemic (UC), untreated diabetic (UD), ascorbic acid and α-tocopherol-treated normoglycemic (CAE) and ascorbic acid and α-tocopherol-treated diabetic (DAE). The rats from the CAE and DAE group received supplementation with ascorbic acid (1g/L in water) and α-tocopherol (1% in chow). At 210-days-old, the animals were sacrified and their jejunum was collected and submitted to immunohistochemistry. Quantitative and/or morphometric analysis were performed. Supplementation with ascorbic acid and α-tocopherol prevented the cell loss of myenteric neurons expressing HuC/D and TrkA in an equivalent proportion. We also observed a reduction of the CGRP nerve fiber varicosities and the prevention of the increased cell body size of submucosal VIP neurons (p<0.05). The association of ascorbic acid and α-tocopherol reduced the deleterious effects of diabetes promoting protection on the enteric neurons.

Análise dos níveis de imunoglobulinas séricas e monócitos de pacientes em tratamento com auto-hemoterapia / Analysis of serum immunoglobulin levels and monocytes in patient treated with autohemotherapy

A auto-hemoterapia (AHT) é uma prática de uso clínico crescente, que vem sendo utilizada como tentativa no tratamento de diversos problemas de saúde, tanto em humanos como em animais. Esse estudo teve como objetivo avaliar o efeito da AHT por meio da avaliação dos níveis de imunoglobulinas e de monócitos de pacientes que realizaram pela primeira vez o tratamento. Foi realizada a coleta de sangue antes e após 24 horas da realização da AHT, e também durante nove dias consecutivos em dez participantes, sendo cinco homens e cinco mulheres. Para realização da AHT foi coletado 10 mL de sangue venoso e aplicado no quadrante látero-superior do músculo glúteo máximo. Dos dez participantes analisados nove apresentaram aumento do número de monócitos que variou de 17% a 250%. Observou-se também aumento da Imunoglobulina M em nove dos indivíduos estudados, que variou de 10 a 28%. O aumento da Imunoglobulina G foi demonstrado em todos os participantes e variou de 13 a 36%. Foi observado também aumento de 2,6 a 89% da Imunoglobulina A em nove pacientes e aumento de 2,7 a 88,2% da Imunoglobulina E em oito indivíduos. Conclui-se que a auto-hemoterapia é fator de incremento da imunidade do organismo, pois mostrou aumento do número de monócitos e de imunoglobulinas.

Autohemotherapy (AHT) is a practice that has increasing clinical use, which is being used in an attempt to treat various health problems in both humans and animals. This study aimed to evaluate the effect of AHT by evaluating the levels of immunoglobulins and monocytes of patients who underwent the treatment for the first time. Blood was collected before and 24-hours after the AHT was performed, and also for nine consecutive days, in ten participants, five men and five women. For the AHT, a total of 10mL venous blood was collected and applied to the lateral-upper quadrant of the gluteus maximus muscle. From the ten participants analyzed, nine presented an increased number of monocytes, ranging from 17% to 250%. An increase in immunoglobulin M was observed in nine of the study subjects, ranging from 10 to 28%. An increased Immunoglobulin G was shown in all participants, which ranged from 13 to 36%. An increase of 2.6 to 89% in immunoglobulin A was observed in nine patients, and an increase of 2.7 to 88.2% in immunoglobulin E in eight individuals. It can be concluded that autohemotherapy is a factor of increased immunity of the body, since it showed an increase in the numbers of monocytes and immunoglobulins.

Combination vitamin C and vitamin E prevents enteric diabetic neuropathy in the small intestine in rats

The present study evaluated the effects of supplementation with a combination of vitamin C and vitamin E on NADH-diaphorase-positive (NADH-d+) and neuronal nitric oxide synthase (nNOS)-immunoreactive myenteric neurons in the duodenum and ileum in diabetic rats. Forty rats were distributed into the following groups: normoglycemic (N), normoglycemic supplemented with vitamin C and vitamin E (NS), diabetic (D), and diabetic supplemented with vitamin C and vitamin E (DS). Vitamin C was added to the drinking water, and vitamin E was incorporated in the diet (1%). After 120 days, the animals were euthanized, and the duodenum and ileum were subjected to NADH-d and nNOS staining. Quantitative and morphometric analyses of myenteric neurons were performed. Diabetes reduced NADH-d+ neurons in the D group. The density of nitrergic neurons was not changed by diabetes or vitamin treatment. Hypertrophy of the cell body area of NADH-d+ and nNOS-immunoreactive neurons was observed in both intestinal segments. Combined supplementation with vitamin C and vitamin E prevented the reduction of the density of NADH-d+ neurons and hypertrophy, demonstratred by both techniques. Supplementation with a combination of vitamin C and vitamin E promoted myenteric neuroprotection in the small intestine in diabetic rats.

Probiotics protect the intestinal wall of morphological changes caused by malnutrition.

This study sought to morphometrically analyze the jejunal wall of protein-malnourished rats administered a probiotic supplement. The sample consisted of recently weaned Wistar rats (Rattus norvegicus) distributed among four groups: animals given a commercial diet (G1, n = 4); animals given the same ration as G1 plus a probiotic supplement (G2, n = 4); animals given a 4% protein diet (G3, n = 4); and animals given the same ration as G3 plus a probiotic supplement (G4, n = 4). After 12 weeks, part of the jejunum was harvested and subjected to routine histological processing. Transverse sections with a thickness of 3 µm were stained with HE, and histochemical techniques were used to assay for glycoconjugates, including staining with periodic acid-Schiff (PAS) + diastase, Alcian Blue (AB) solution at pH 2.5, and Alcian Blue solution at pH 1.0. Morphometric analysis of the bowel wall showed that the probiotic culture used in this study induced hypertrophy of several layers of the jejunal wall in well-nourished animals and reduced the bowel wall atrophy usually observed in protein-malnourished animals. Neither malnutrition nor the use of probiotics altered the relationship between the number of goblet cells and the number of enterocytes.

Is L-glutathione more effective than L-glutamine in preventing enteric diabetic neuropathy?

BACKGROUND: Diabetes and its complications appear to be multifactorial. Substances with antioxidant potential have been used to protect enteric neurons in experimental diabetes. AIM: This study evaluated the effects of supplementation with L-glutamine and L-glutathione on enteric neurons in the jejunum in diabetic rats. METHODS: Rats at 90 days of age were distributed into six groups: normoglycemic, normoglycemic supplemented with 2 % L-glutamine, normoglycemic supplemented with 1 % L-glutathione, diabetic (D), diabetic supplemented with 2 % L-glutamine (DG), and diabetic supplemented with 1 % L-glutathione (DGT). After 120 days, the jejunums were immunohistochemically stained for HuC/D+ neuronal nitric oxide synthase (nNOS) and vasoactive intestinal polypeptide (VIP). Western blot was performed to evaluate nNOS and VIP. Submucosal and myenteric neurons were quantitatively and morphometrically analyzed. RESULTS: Diabetic neuropathy was observed in myenteric HuC/D, nNOS, and VIP neurons (p < 0.05). In the submucosal plexus, diabetes did not change nitrergic innervation but increased VIPergic neuronal density and body size (p < 0.05). Supplementation with L-glutathione prevented changes in HuC/D neurons in the enteric plexus (p < 0.05), showing that supplementation with L-glutathione was more effective than with L-glutamine. Myenteric nNOS neurons in the DGT group exhibited a reduced density (34.5 %) and reduced area (p < 0.05). Submucosal neurons did not exhibit changes. The increase in VIP-expressing neurons was prevented in the submucosal plexus in the DG and DGT groups (p < 0.05). CONCLUSION: Supplementation with L-glutathione exerted a better neuroprotective effect than L-glutamine and may prevent the development of enteric diabetic neuropathy.

Characterization of the myenteric neuronal population and subpopulation of the duodenum of adult wistar rat fed with hypoproteic chow.

The effects of severe protein malnutrition (4%) on myenteric neurons of Wistar rat duodenum, in relation to a standard 22%-protein diet for rodents, were assessed in this study. Segments of the duodenum from 10 rats from each nutritional group were submitted to the elaboration of whole mounts - 5 stained with Giemsa to determine the total population of myenteric neurons and the others stained by a histochemical method to detect nervous cells through the NADPH-diaphorase enzyme activity for studying the subpopulation of nitrergic neurons. The area of 100 neurons per animal, totalizing 2,000 neurons, were randomly measured by using the Image Pro-Plus(®)software. Malnourished rats presented 34.38% lower body weight and 10.60% duodenum length reduction when compared to the control group. Quantitative analysis demonstrated no significant differences between control and malnourished group by using Giemsa; however, as the organ reduction was not followed by an increase inversely proportional to the density of neurons, the condition imposed suggests the loss of neurons from the total population. Nevertheless, through NADPH-d histochemistry, there was a neuronal density increase for the malnourished group. There was no significant difference between the groups for both techniques with respect to the morphometric analysis of the body cell.

Probiotics prevent growth deficit of colon wall strata of malnourished rats post-lactation.

The objective of this study was to analyze morphometrically the colon wall strata of malnourished rats supplemented with probiotics. Sixteen recently weaned Wistar rats (Rattus norvegicus) were distributed into four groups: animals that received commercial chow (G1, n = 4); animals that received the same feed as G1 and were supplemented with probiotics (G2, n = 4); animals that received chow with 4% of proteins (G3, n = 4); animals that received the same feed as G3 and were supplemented with probiotics (G4, n = 4). After 12 weeks, the proximal colon was collected and submitted to histological processing. Three-µm cuts were stained with H.E., Periodic Acid Schifff (P.A.S.) + diasthasis solution and Alcian Blue (A.B.) pH 2.5 and pH 1.0. The morphometric analysis of the intestinal wall showed that the supplementation with ABT-4 probiotic culture prevents the growth deficit of colon wall strata that normally occurs in malnourished rats right after lactation. Besides, no alteration was observed in the proportion of the number of globet cells in relation to the number of enterocytes in malnourished rats, regardless of the supplementation with probiotics.