Comparative methods analysis on rates of cutaneous evaporative water loss (CEWL) in cattle.

Closed colorimetric paper disc chambers and flow-through ventilated capsules are the most employed methods of measuring rates of local cutaneous evaporative water loss in cattle. However, we do not know if these methods show a close agreement with the total rate of cutaneous evaporative water loss derived from the weighing system (i.e., the gold standard method). We therefore combined a high-precision weighing system and flow through respirometry to accurately quantify the cutaneous evaporative water loss rates in shaded heifers, while simultaneously recording parallel data obtained from a flow-through ventilated capsule, and a closed colorimetric paper disc chamber. Least square means of the local surface-specific cutaneous evaporative water loss rate (g m-2 h-1) derived from the colorimetric paper discs and ventilated capsules show close agreement to the total rate of surface-specific cutaneous evaporative water loss (g m-2 h-1) derived from the weighing method. Likewise, fitted linear regression lines also showed that they were well correlated (e.g., R2 = 0.93 and r = 0.96 for ventilated capsule vs weighing method; and R2 = 0.81 and r = 0.91 for colorimetric paper discs vs weighing method). However, the mean square deviation revealed various sources of disagreement between the local measurements and those derived from the weighing method, in which the local rate of cutaneous evaporative water loss derived from colorimetric paper discs showed greater deviation. In conclusion, given the importance of cutaneous evaporative water loss for assessing temperature requirements and heat tolerance of cattle, our findings show large discrepancies derived from the closed colorimetric paper discs chamber when compared with parallel data derived from the gold standard method, which is sufficient to call into question previous findings obtained by employing such methods. Moreover, the flow-through ventilated capsule appears to be the most accurate method to assess the local rate of cutaneous evaporative water loss in cattle.

Polyphenolic compounds of Euphorbia umbellata (Pax) Bruyns (Euphorbiaceae) improved endothelial dysfunction through arginase inhibition.

Euphorbia umbellata is used for its anti-inflammatory properties; however, there are limited data available regarding its effects on vascular function. Its bark is rich in polyphenolic compounds, which potentially improve endothelial dysfunction (ED). This study proposes to investigate the effects of E. umbellata bark extracts and its polyphenolic compounds on arginase (ARG) activity and nitric oxide (NO)-related targets. Chromatographic procedures were used for the chemical characterisation of the extracts. Furthermore, in silico (molecular docking), in vitro (ARG inhibition), in vivo (streptozotocin-induced hyperglycemia model), and ex vivo (l-arginine metabolism, vascular reactivity, western blot, and biochemical) techniques were carried out. Quercetin, gallic acid, and ellagic acid were identified in the extracts. In silico screening predicted that gallic acid and quercetin would have the most promising interactions with ARG -identified cavities. This was confirmed in vitro as both compounds had a direct inhibitory effect on ARG, as was the case regarding the extracts. Oral treatment preserved endothelium-dependent vasodilation through ARG inhibition together with an increase in l-arginine bioavailability and endothelial NO synthase expression. Biochemical parameters determined the lack of toxicity for sub-chronic treatment. E. umbellata bark extracts and its compounds can contribute to ED treatment, at least partly, through the inhibition of vascular ARG.

Immunoinformatic approach to assess SARS-CoV-2 protein S epitopes recognised by the most frequent MHC-I alleles in the Brazilian population.

AIMS: Brazil is nowadays one of the epicentres of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic and new therapies are needed to face it. In the context of specific immune response against the virus, a correlation between Major Histocompatibility Complex Class I (MHC-I) and the severity of the disease in patients with COVID-19 has been suggested. Aiming at better understanding the biology of the infection and the immune response against the virus in the Brazilian population, we analysed SARS-CoV-2 protein S peptides in order to identify epitopes able to elicit an immune response mediated by the most frequent MHC-I alleles using in silico methods. METHODS: Our analyses consisted in searching for the most frequent Human Leukocyte Antigen (HLA)-A, HLA-B and HLA-C alleles in the Brazilian population, excluding the genetic isolates; then, we performed: molecular modelling for unsolved structures, MHC-I binding affinity and antigenicity prediction, peptide docking and molecular dynamics of the best fitted MHC-I/protein S complexes. RESULTS: We identified 24 immunogenic epitopes in the SARS-CoV-2 protein S that could interact with 17 different MHC-I alleles (namely, HLA-A*01:01; HLA-A*02:01; HLA-A*11:01; HLA-A*24:02; HLA-A*68:01; HLA-A*23:01; HLA-A*26:01; HLA-A*30:02; HLA-A*31:01; HLA-B*07:02; HLA-B*51:01; HLA-B*35:01; HLA-B*44:02; HLA-B*35:03; HLA-C*05:01; HLA-C*07:01 and HLA-C*15:02) in the Brazilian population. CONCLUSIONS: Being aware of the intrinsic limitations of in silico analysis (mainly the differences between the real and the Protein Data Bank (PDB) structure; and accuracy of the methods for simulate proteasome cleavage), we identified 24 epitopes able to interact with 17 MHC-I more frequent alleles in the Brazilian population that could be useful for the development of strategic methods for vaccines against SARS-CoV-2.

Impacto do Programa Academia da Saúde sobre gastos com internações hospitalares por doenças cerebrovasculares / Impact of the Health Gym Program on hospital admissions for cerebrovascular diseases

O objetivo deste artigo é avaliar o impacto do Programa Academia da Saúde (PAS) sobre os gastos com internações hospitalares por doenças cerebrovasculares no estado de Pernambuco. Trata-se de uma avaliação de impacto de políticas públicas, desenvolvida através de uma abordagem quase-experimental que consiste na aplicação do método do pareamento por escore de propensão, tomando como referência os anos de 2010 e 2018. Para tanto, utilizou-se dados socioeconômicos, demográficos e epidemiológicos de 89 municípios que implantaram o programa (tratados) e de outros 52 que não implantaram (controles). Os dados foram obtidos no Departamento de Informática do Sistema Único de Saúde, Instituto Brasileiro de Geografia e Estatística e outras bases. O total de internações por doenças cerebrovasculares em 2010 foi de 6.091 e 10.595 em 2018. Os municípios que implantaram o PAS gastaram em média R$ 1.258,61 a menos com internações por doenças cerebrovasculares (p < 0,05) para cada grupo de 10 mil habitantes. O modelo econométrico proposto mostrou-se adequado para explicar o impacto do PAS sobre os gastos com internações hospitalares por doenças cerebrovasculares. A relação entre a implantação PAS e a diminuição do gasto nos permite inferir que essa intervenção tem cumprido com a sua diretriz de constituir-se como programa de referência para a promoção da saúde, prevenção e controle de doenças crônicas, e alcançado o seu objetivo específico de aumentar o nível de atividade física da população dos municípios beneficiários

Health Gym Program (HGP) is a strategic health and physical activity promotion program financed by the Brazilian public health system. The aim of this paper is to analyze the impact of HGP on the spending on hospital admissions for cardiovascular disease in Pernambuco State, Brazil. This public policy impact analysis had used a quasi-experimental approach which consists on the application of the Propensity Score Matching considering the years 2010 and 2018. Socioeconomics, demographics and epidemiological data of 89 municipalities that implemented HGP (treated) and 54 that did not (controls) were collected from Brazilian Health Data Department, Brazilian Institute of Geography and Statistics and other databases. The total number of hospitalizations for cerebrovascular diseases was 6,091 in 2010 and 10,595 in 2018. Municipalities that implemented HGP spent an average of R$ 1,258.61 less on hospitalizations for Cer-ebrovascular Disease (p < 0.05) for each group of 10,000 inhabitants. The econometric model developed in this study is adequate to explain the impact of the HGP on the expenses with hospital admissions for cerebrovascular diseases. The relationship between HGP implantation and the decrease in spending on hospital admissions allows us to infer that this intervention has complied with its guideline of constituting itself as a reference program for the health promotion, prevention and control of chronic diseases, and achieved its specific objective of increasing the level of physical activity of the population of the beneficiary municipalities

Neotropical carnivores: a data set on carnivore distribution in the Neotropics

Mammalian carnivores are considered a key group in maintaining ecological health and can indicate potential ecological integrity in landscapes where they occur. Carnivores also hold high conservation value and their habitat requirements can guide management and conservation plans. The order Carnivora has 84 species from 8 families in the Neotropical region: Canidae; Felidae; Mephitidae; Mustelidae; Otariidae; Phocidae; Procyonidae; and Ursidae. Herein, we include published and unpublished data on native terrestrial Neotropical carnivores (Canidae; Felidae; Mephitidae; Mustelidae; Procyonidae; and Ursidae). NEOTROPICAL CARNIVORES is a publicly available data set that includes 99,605 data entries from 35,511 unique georeferenced coordinates. Detection/non‐detection and quantitative data were obtained from 1818 to 2018 by researchers, governmental agencies, non‐governmental organizations, and private consultants. Data were collected using several methods including camera trapping, museum collections, roadkill, line transect, and opportunistic records. Literature (peerreviewed and grey literature) from Portuguese, Spanish and English were incorporated in this compilation. Most of the data set consists of detection data entries (n = 79,343; 79.7%) but also includes non‐detection data (n = 20,262; 20.3%). Of those, 43.3% also include count data (n = 43,151). The information available in NEOTROPICAL CARNIVORES will contribute to macroecological, ecological, and conservation questions in multiple spatio‐temporal perspectives. As carnivores play key roles in trophic interactions, a better understanding of their distribution and habitat requirements are essential to establish conservation management plans and safeguard the future ecological health of Neotropical ecosystems. Our data paper, combined with other largescale data sets, has great potential to clarify species distribution and related ecological processes within the Neotropics. There are no copyright restrictions and no restriction for using data from this data paper, as long as the data paper is cited as the source of the information used. We also request that users inform us of how they intend to use the data.

Adolescentes Libres de Tabaco: Efectividad de una intervención educativa. Estudio antes-después controlado / Smoke-Free Adolescents: Effectiveness of an educational intervention. Controlled, before and after study

El tabaquismo es considerado la principal causa de muerte prevenible en el mundo. La mayoría de los fumadores inician esta adicción durante edades tempranas, especialmente, durante la adolescencia. El objetivo del estudio fue identificar los determinantes de consumo adolescente y evaluar el impacto de una intervención educativa en la prevalencia del tabaquismo. Métodos. Estudio antes-después controlado, realizado durante los años 2010-2012 en dos colegios secundarios de la ciudad de La Plata. En ambos, se realizó una encuesta basal seguida de dos mediciones posteriores; en uno de ellos, se implementó una intervención educativa dirigida a jóvenes de 12 y 13 años. Se utilizaron modelos de regresión múltiple para identificar las variables asociadas al tabaquismo y evaluar el impacto de la intervención. Resultados. Se incluyeron 1911 encuestas (Colegio A: 617; Colegio B: 1294). Las variables asociadas al tabaquismo adolescente fueron la tenencia de un hermano fumador (odds ratio -OR- 2,55), madre fumadora (OR 2,32), años de edad (OR 1,92) y el sexo femenino (OR 1,75). El OR ajustado por dichos determinantes para ser fumador actual en el colegio intervención versus el control fue 0,54 (intervalo de confianza -IC- del 95%: 0,35-0,83) en el primer año de seguimiento y 0,98 (IC 95%: 0,60-1,61) en el segundo año. Conclusiones. La tenencia de una madre o un hermano fumador, la edad y el sexo femenino se correlacionaron fuertemente con el consumo de cigarrillos. La intervención educativa tuvo un efecto positivo en el primer año de seguimiento, pero luego no se mantuvo.

Smoking is considered the main cause of preventable death worldwide. Most smokers start using tobacco at an early age, especially during adolescence. The objective of this study was to identify the determinants of adolescent use of tobacco and assess the impact of an educational intervention on the prevalence of smoking. Methods. Controlled, before and after study conducted between 2010 and 2012 at two secondary schools in the city of La Plata. A baseline survey was administered at both schools followed by two subsequent measurements; an educational intervention aimed at youth aged 12 and 13 years was implemented in one of the schools. Multiple regression models were used to identify the outcome measures associated with smoking and assess the impact of the intervention. Results. A total of 1911 surveys were included (school A: 617; school B: 1294). The outcome measures associated with adolescent smoking were having a sibling who smokes (odds ratio -amp;#91;OR-amp;#93;: 2.55), a mother who smokes (OR: 2.32), age (OR: 1.92), and female sex (OR: 1.75). The OR adjusted for these determinants to be a current smoker at the intervention school versus the control school was 0.54 (95% confidence interval -amp;#91;CI-amp;#93;: 0.35-0.83) in the first year of follow-up and 0.98 (95% CI: 0.60-1.61) in the second year. Conclusions. Having a mother or a sibling who smokes, age, and female sex were strongly correlated to cigarette smoking. The educational intervention had a positive effect in the first year of follow-up, which was not maintained over time.

Smoke-Free Adolescents. Effectiveness of an educational intervention. Controlled, before and after study. / Adolescentes Libres de Tabaco. Efectividad de una intervención educativa. Estudio antes-después controlado.

Smoking is considered the main cause of preventable death worldwide. Most smokers start using tobacco at an early age, especially during adolescence. The objective of this study was to identify the determinants of adolescent use of tobacco and assess the impact of an educational intervention on the prevalence of smoking. Methods. Controlled, before and after study conducted between 2010 and 2012 at two secondary schools in the city of La Plata. A baseline survey was administered at both schools followed by two subsequent measurements; an educational intervention aimed at youth aged 12 and 13 years was implemented in one of the schools. Multiple regression models were used to identify the outcome measures associated with smoking and assess the impact of the intervention. Results. A total of 1911 surveys were included (school A: 617; school B: 1294). The outcome measures associated with adolescent smoking were having a sibling who smokes (odds ratio [OR]: 2.55), a mother who smokes (OR: 2.32), age (OR: 1.92), and female sex (OR: 1.75). The OR adjusted for these determinants to be a current smoker at the intervention school versus the control school was 0.54 (95% confidence interval [CI]: 0.35-0.83) in the first year of follow-up and 0.98 (95% CI: 0.60-1.61) in the second year. Conclusions. Having a mother or a sibling who smokes, age, and female sex were strongly correlated to cigarette smoking. The educational intervention had a positive effect in the first year of follow-up, which was not maintained over time

El tabaquismo es considerado la principal causa de muerte prevenible en el mundo. La mayoría de los fumadores inician esta adicción durante edades tempranas, especialmente, durante la adolescencia. El objetivo del estudio fue identificar los determinantes de consumo adolescente y evaluar el impacto de una intervención educativa en la prevalencia del tabaquismo. Métodos. Estudio antes-después controlado, realizado durante los años 2010-2012 en dos colegios secundarios de la ciudad de La Plata. En ambos, se realizó una encuesta basal seguida de dos mediciones posteriores; en uno de ellos, se implementó una intervención educativa dirigida a jóvenes de 12 y 13 años. Se utilizaron modelos de regresión múltiple para identificar las variables asociadas al tabaquismo y evaluar el impacto de la intervención. Resultados. Se incluyeron 1911 encuestas (Colegio A: 617; Colegio B: 1294). Las variables asociadas al tabaquismo adolescente fueron la tenencia de un hermano fumador (odds ratio ­OR­ 2,55), madre fumadora (OR 2,32), años de edad (OR 1,92) y el sexo femenino (OR 1,75). El OR ajustado por dichos determinantes para ser fumador actual en el colegio intervención versus el control fue 0,54 (intervalo de confianza ­IC­ del 95%: 0,35-0,83) en el primer año de seguimiento y 0,98 (IC 95%: 0,60-1,61) en el segundo año. Conclusiones. La tenencia de una madre o un hermano fumador, la edad y el sexo femenino se correlacionaron fuertemente con el consumo de cigarrillos. La intervención educativa tuvo un efecto positivo en el primer año de seguimiento, pero luego no se mantuvo.

Phenolic Compounds as Arginase Inhibitors: New Insights Regarding Endothelial Dysfunction Treatment.

Endothelial dysfunction is characterised by the low bioavailability of nitric oxide with a relevant negative impact on the nitric oxide/cGMP pathway. The loss of nitric oxide/cGMP signaling may be caused by an increased arginase activity. Plant-derived substances, especially polyphenols, are compounds that have the potential to inhibit arginase activity and they may represent an attractive therapeutic option to combat clinical outcomes related to endothelial dysfunction. An extensive review was carried out using all available data published in English in the Pubmed database, and without restriction regarding the year of publication. Despite the increased number of new substances that have been tested as arginase inhibitors, it is rare to find a compound that satisfies all the toxicological criteria to be used in the development of a new drug. On the other hand, recent data have shown that substances from plants have great potential to be applied as arginase inhibitors, most of which are polyphenols. Of the relevant mechanisms in this process, the inhibition of arginase by natural products seems to act against endothelial dysfunction by reestablishing the vascular function and elevating nitric oxide levels (by increasing the amounts of substrate (L-arginine, and endothelial nitric oxide synthase activation and stabilisation) as well as decreasing the generation of reactive species (formed by uncoupledendothelial nitric oxide synthase). This review summarises several topics regarding arginase inhibition by natural substances as well as indicating this pathway as an emergent strategy to elevate nitric oxide levels in disorders involving endothelial dysfunction. In addition, some aspects regarding structural activity and future perspectives are discussed.

A Simple and High-yield Synthesis of Hexadecyl Ferulate and Its In Vitro Antioxidant Potential

ABSTRACT Ferulic acid (FA) is a phenolic compound with well-known antioxidant potential that can be used as a promising anti-inflammatory and anti-cancer molecule. Furthermore, it has been reported to have neuroprotective activity. One of the main problems, which limit its clinical use, is its low bioavailability when administered orally. This limitation can be circumvented by changes in their structure and/or for preparing lipid-based formulations. The aim of this study was to synthesize a derivative of FA, the hexadecyl ferulate (HF). This compound would be more susceptible to pass through blood-brain barrier (BBB) due to its lipophilic character. The HF was obtained by Steglich esterification and yielded 76.77 ± 1.35%. Its structural characterization was performed by spectroscopic methods of Fourier-transformed infrared spectroscopy (FTIR) and nuclear magnetic resonance (NMR). FTIR spectrum of HF presented two typical bands of ester group, a C=O ester stretching band at 1725 cm-1 and a C-O stretching band at 1159 cm-1. The 1H and 13C spectral data confirmed the chemical structure of HF. Regarding the 13C NMR spectrum, HF showed a chemical shift at δ 167.39 ppm which corresponded to the carbonyl carbon of the ester group. Concerning the in vitro antioxidant potential, HF had equivalent or improved scavenger activity than FA leading to IC50 values of 0.083 ± 0.009 nmol.mL-1 and 0.027 ± 0.002 nmol.mL-1 in DPPH radical scavenging and ABTS radical cation decolorization assays, respectively. Further studies are required in order to investigate the antioxidant effect of HF in biological media.

Defecography by digital radiography: experience in clinical practice / Defecografia por radiologia digital: experiência na prática clínica

Abstract Objective: The objective of this study was to profile patients who undergo defecography, by age and gender, as well as to describe the main imaging and diagnostic findings in this population. Materials and Methods: This was a retrospective, descriptive study of 39 patients, conducted between January 2012 and February 2014. The patients were evaluated in terms of age, gender, and diagnosis. They were stratified by age, and continuous variables are expressed as mean ± standard deviation. All possible quantitative defecography variables were evaluated, including rectal evacuation, perineal descent, and measures of the anal canal. Results: The majority (95%) of the patients were female. Patient ages ranged from 18 to 82 years (mean age, 52 ± 13 years): 10 patients were under 40 years of age; 18 were between 40 and 60 years of age; and 11 were over 60 years of age. All 39 of the patients evaluated had abnormal radiological findings. The most prevalent diagnoses were rectocele (in 77%) and enterocele (in 38%). Less prevalent diagnoses were vaginal prolapse, uterine prolapse, and Meckel's diverticulum (in 2%, for all). Conclusion: Although defecography is performed more often in women, both genders can benefit from the test. Defecography can be performed in order to detect complex disorders such as uterine and rectal prolapse, as well as to detect basic clinical conditions such as rectocele or enterocele.

Resumo Objetivo: Este estudo tem por objetivo descrever o perfil da população que se submeteu a exame de defecografia, de acordo com a faixa etária e sexo do paciente, bem como os principais achados e diagnósticos de imagem nesta população. Materiais e Métodos: Estudo retrospectivo e descritivo com 39 pacientes realizado entre janeiro de 2012 e fevereiro de 2014. Os pacientes foram avaliados quanto a idade, sexo e os diagnósticos encontrados. Foram divididos por idade, e as variáveis contínuas são expressas como média ± desvio-padrão. Todas as quantificações possíveis em defecografia foram realizadas neste trabalho, incluindo esvaziamento da ampola retal, descenso perineal e as medidas do canal anal. Resultados: Dos 39 pacientes estudados, todos apresentaram alterações radiológicas, sendo a maioria do sexo feminino (95%). O mais novo tinha 18 anos e o mais velho, 82 anos (idade média de 52 ± 13 anos). Dez pacientes tinham menos de 40 anos, 18 tinham entre 40 e 60 anos e 11 pacientes tinham mais do que 60 anos. Os diagnósticos mais prevalentes foram retocele anterior (77%) e enterocele (38%). Os menos frequentes foram prolapso vaginal (2%), prolapso uterino (2%) e divertículo de Meckel (2%). Conclusão: As mulheres realizam mais exames de defecografia, porém ambos os gêneros se beneficiam deste estudo. A defecografia é capaz de detectar causas complexas de distúrbio da defecação como prolapso vaginal, uterino e retal, e pode ser utilizada em condições clínicas mais simples como a avaliação de retocele ou enterocele.

Anti-ulcer mechanisms of polyphenols extract of Euphorbia umbellata (Pax) Bruyns (Euphorbiaceae).

ETHNOPHARMACOLOGICAL RELEVANCE: Euphorbia umbellata (leitosinha) is used in southern Brazilian folk medicine to treat gastric problems, as well as for its analgesic and anti-inflammatory properties. AIM OF STUDY: To evaluate the anti-ulcer effects of methanolic bark fraction (MF) against in vivo and in vitro assays, as well as an antioxidant, antibacterial and chromatographic study of this fraction. MATERIALS AND METHODS: In vivo anti-ulcer activity was performed using ethanol and indomethacin models with different MF concentrations (50, 100 or 200mg/Kg). The stomachs of the animals were applied to histological evaluation, and the serum to evaluate the ABTS(•+) radical capture. The 200mg/Kg dose was used to analyze the mechanisms involved in antiulcerogenic properties of methanolic fraction. The in vitro activity was performed using several different antioxidant assays, in addition to anti-Helicobacter pylori and anti-urease experiments. The chromatographic study was carried out by LC-MS analysis. RESULTS: Pharmacological investigation of the MF showed an anti-ulcer potential in ethanol and indomethacin in vivo assays. The material presented a high antioxidant activity for several oxidant in vitro systems (DPPH(•), ABTS(•+), O2(•-), HOCl, TauCl and HRP), as well as an ABTS(•+) capture increasing (7.5%) by the treated animals serum (when compared to the negative control). Prostaglandins, nitric oxide/ cyclic guanosine monophosphate pathway and involvement of the protein components of the glutathione complex are some of the mechanisms related with this potential anti-ulcer action. The histological examination of the stomachs of the animals showed that the MF also prevents local action of offensive agents. Chemical analysis using LC-QTOF-MS revealed the presence of ellagic and gallic acid derivatives and flavonols. CONCLUSION: The findings provide scientific basis to the ethnopharmacological purpose of the studied plant and the biological activities of MF of E. umbellata stem bark may be due to the presence of phenolic compounds.

Defecography by digital radiography: experience in clinical practice.

OBJECTIVE: The objective of this study was to profile patients who undergo defecography, by age and gender, as well as to describe the main imaging and diagnostic findings in this population. MATERIALS AND METHODS: This was a retrospective, descriptive study of 39 patients, conducted between January 2012 and February 2014. The patients were evaluated in terms of age, gender, and diagnosis. They were stratified by age, and continuous variables are expressed as mean ± standard deviation. All possible quantitative defecography variables were evaluated, including rectal evacuation, perineal descent, and measures of the anal canal. RESULTS: The majority (95%) of the patients were female. Patient ages ranged from 18 to 82 years (mean age, 52 ± 13 years): 10 patients were under 40 years of age; 18 were between 40 and 60 years of age; and 11 were over 60 years of age. All 39 of the patients evaluated had abnormal radiological findings. The most prevalent diagnoses were rectocele (in 77%) and enterocele (in 38%). Less prevalent diagnoses were vaginal prolapse, uterine prolapse, and Meckel's diverticulum (in 2%, for all). CONCLUSION: Although defecography is performed more often in women, both genders can benefit from the test. Defecography can be performed in order to detect complex disorders such as uterine and rectal prolapse, as well as to detect basic clinical conditions such as rectocele or enterocele.

OBJETIVO: Este estudo tem por objetivo descrever o perfil da população que se submeteu a exame de defecografia, de acordo com a faixa etária e sexo do paciente, bem como os principais achados e diagnósticos de imagem nesta população. MATERIAIS E MÉTODOS: Estudo retrospectivo e descritivo com 39 pacientes realizado entre janeiro de 2012 e fevereiro de 2014. Os pacientes foram avaliados quanto a idade, sexo e os diagnósticos encontrados. Foram divididos por idade, e as variáveis contínuas são expressas como média ± desvio-padrão. Todas as quantificações possíveis em defecografia foram realizadas neste trabalho, incluindo esvaziamento da ampola retal, descenso perineal e as medidas do canal anal. RESULTADOS: Dos 39 pacientes estudados, todos apresentaram alterações radiológicas, sendo a maioria do sexo feminino (95%). O mais novo tinha 18 anos e o mais velho, 82 anos (idade média de 52 ± 13 anos). Dez pacientes tinham menos de 40 anos, 18 tinham entre 40 e 60 anos e 11 pacientes tinham mais do que 60 anos. Os diagnósticos mais prevalentes foram retocele anterior (77%) e enterocele (38%). Os menos frequentes foram prolapso vaginal (2%), prolapso uterino (2%) e divertículo de Meckel (2%). CONCLUSÃO: As mulheres realizam mais exames de defecografia, porém ambos os gêneros se beneficiam deste estudo. A defecografia é capaz de detectar causas complexas de distúrbio da defecação como prolapso vaginal, uterino e retal, e pode ser utilizada em condições clínicas mais simples como a avaliação de retocele ou enterocele.

Low-protein diet disrupts the crosstalk between the PKA and PKC signaling pathways in isolated pancreatic islets.

Protein restriction in the early stages of life can result in several changes in pancreatic function. These alterations include documented reductions in insulin secretion and in cytoplasmic calcium concentration [Ca(2+)]i. However, the mechanisms underlying these changes have not been completely elucidated and may result, in part, from alterations in signaling pathways that potentiate insulin secretion in the presence of glucose. Our findings suggest that protein restriction disrupts the insulin secretory synergism between Cyclic adenosine monophosphate (cAMP)-dependent protein kinase (PKA) and Ca(2+)-dependent protein kinase C (PKC) in isolated islets. Western blot analysis demonstrated reduced levels of both phospho-cAMP response element-binding protein (phospho-CREB) at Ser-133 and substrates phosphorylated by PKCs (Phospho-(Ser) PKC substrate), suggesting that PKA and PKC activity was impaired in islets from rats fed a low-protein diet (LP). cAMP levels and global Ca(2+) entry were also reduced in LP islets. In summary, our findings showed that protein restriction altered the crosstalk between PKA and PKC signaling pathways, resulting in the alteration of secretory synergism in isolated islets.

Manometric analysis of the influence of rectal content on anal pressures in chronically constipated patients / Análise manométrica da influência do conteúdo retal nas pressões anais em pacientes cronicamente constipados

OBJECTIVE: The aim of our study was to analyze whether the presence of content in the rectum influences the anorectal manometry examination results in chronically constipated patients. METHODS: We evaluated 38 chronically constipated patients, 36 women and 2 men, with an average age of 53.55 years of age, all with a score above 10 on the Agachan Constipation Scoring System. All the patients underwent rectal preparation and then had the anorectal manometry examination without rectal content and after 5 min had it with a rectal balloon inflated with 200 ml of air in the rectum. STATISTICAL ANALYSIS: The statistical parametric paired-t test was applied in order to verify the difference in response between the groups after an intervention, adopting a significant level of 5% (p < 0.05). RESULTS: The anal pressure was analyzed from the standard anal manometry examination and we found a statistically significant influence on the manometric results for the patients' average resting pressures, absolute average contractions, average contractions, evacuations, and sustained contractions in the functional anal canals. CONCLUSION: The presence of rectal content influences the manometric values of average resting pressure, average absolute contraction, average contraction, evacuation, and average sustained contractions in the functional anal canal in the group of chronically constipated patients. (AU)

OBJETIVO: O objetivo deste estudo foi analisar se a presença de conteúdo no reto influencia os resultados do exame de manometria anorretal em pacientes cronicamente constipados. MÉTODOS: Foram avaliados 38 pacientes cronicamente constipados, 36 mulheres e dois homens, com média de 53,55 anos de idade, todos com pontuação acima de 10 no Agachan Constipation Scoring System. Todos os pacientes foram submetidos a preparo retal e, em seguida, passaram por um exame de manometria anorretal sem conteúdo retal e, depois de transcorridos cinco minutos, um novo exame foi realizado, agora com um balão retal inflado com 200 ml de ar no reto. ANÁLISE ESTATÍSTICA: Na análise estatística, foi aplicado o teste t paramétrico, com a finalidade de verificar a diferença, em termos de resposta, entre os grupos após uma intervenção. Para tanto, foi adotado um nível de significância de 5% (P < 0,05). RESULTADOS: A pressão anal foi analisada com base no exame de manometria anal de rotina; em nossos pacientes, foi observada influência estatisticamente significativa nos resultados manométricos para as pressões médias em repouso, contrações médias absolutas, contrações médias, evacuações e contrações sustentadas nos canais anais funcionais. CONCLUSÃO: A presença de conteúdo retal influencia os valores manométricos da pressão média em repouso, contração absoluta média, contração média, evacuação, e contrações sustentadas médias no canal anal funcional no grupo de pacientes cronicamente constipados. (AU)

Linfangioma perianal: relato de caso / Perianal lymphangioma: case report

O linfangioma é um tumor benigno que pode se desenvolver em qualquer região do corpo, uma vez que se origina de lesão dos vasos linfáticos. A apresentação perianal deste tipo de tumor é rara. O histórico do paciente e o exame físico nos levaram a suspeitar do tumor e identificá-lo. Este relato de caso envolve um paciente do sexo masculino com histórico de tumor que pode ser encontrado na região perineal. O tratamento escolhido foi cirurgia e o diagnóstico definitivo dado pelo patologista.

Lymphangioma is a benign tumor that can develop anywhere on the body, since it is derived from a lesion of the lymphatic vessels. Perianal presentation of this kind of tumor is rare. Patient history and a physical examination led us to suspect and identify the tumor. This case report is about a male patient with a history of a tumor that can be found throughout the perineal area. The treatment of choice is surgery and definitive diagnosis is given by the pathologist.

Abscesso hepático por klebsiella pneumoniae e suas complicações sistêmicas / Liver abscess by klebsiella pneumoniae and its systemic complications

Abscesso hepático por Klebsiella pneumoniae é incomum em países ocidentais e tem sido associado a complicações severas, sobretudo em pacientes diabéticos. A manifestação clínico-laboratorial da doença é inespecífica. Endoftalmite é uma rara complicação de septicemia por Klebsiella pneumoniae. Atraso terapêutico pode resultar em perda visual acentuada e irreversível. Relatamos um caso de abscesso hepático por Klebsiella pneumoniae complicado com endoftalmite, embolia pulmonar séptica e endocardite em homem diabético.

Klebsiella pneumoniae liver abscess is unco mmon in western countries and has been associated with severe complications, especially in diabetic patients. The clinical and laboratory manifestations of the disease are nonspecific. Endophthalmitis is a rare complication of septicemia due to Klebsiella pneumoniae. Therapeutic delay can result in severe and irreversible visual loss. We report a case of Klebsiella pneumoniae liver abscess complicated by endophthalmitis, septic pulmonary emboli and endocarditis in diabetic man.

Antitumoural effect of Synadenium grantii Hook f. (Euphorbiaceae) latex.

ETHNOPHARMACOLOGICAL RELEVANCE: Synadenium grantii Hook f. has traditionally been used to treat various neoplastic diseases in southern Brazil. AIM OF STUDY: Evaluation of the antitumoural potential of Synadenium grantii latex against B16F10 melanoma cell line using in vitro and in vivo models, as well as a phytochemical study of the latex. MATERIALS AND METHODS: The in vitro antitumoural activity was performed using MTT and trypan blue assays with different latex concentrations (1.7 µg-7.0 µg/well and 1.22 mg-4.88 mg/well). Flow cytometry was used to determine the progression of the cell cycle. The in vivo activity was performed by subcutaneously injecting melanoma cells in the dorsum of C57BL6 mice, followed by treating the mice with a popular form of use of the latex (garrafada) administered orally. After sacrificing the animals, histological analysis of the organs was performed by hematoxylin-eosin staining. The phytochemical study of the latex was performed by NMR and chromatographic procedures and the extracts and isolated substances were evaluated by IR, 1D and 2D NMR analysis. RESULTS: The Synadenium grantii latex exhibited decreased cell viability of the melanoma line in a concentration and time-dependent manner, and also cell cycle arrest in the S-G2/M phase. The latex caused a 40% reduction in the volume of tumours of the mice with melanomas. Histological examination of the organs of these animals showed no differences between groups. The phytochemical investigation resulted in the isolation and identification of triterpene euphol and the steroid citrostadienol, which were tested against the strain of melanoma. Euphol showed no antitumoural activity, while the steroid citrostadienol showed reduced cytotoxic activity. CONCLUSION: The Synadenium grantii latex presented in vitro and in vivo cytotoxic effects with antitumoural activity against B16F10 melanoma cells.