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Abstract This study aimed to evaluate the contribution of oral and maxillofacial pathology laboratories (OMPLs) in Brazilian public universities to the diagnosis of lip, oral cavity, and oropharyngeal squamous cell carcinoma (SCC). A cross-sectional study was performed using biopsy records from a consortium of sixteen public OMPLs from all regions of Brazil (North, Northeast, Central-West, Southeast, and South). Clinical and demographic data of patients diagnosed with lip, oral cavity, and oropharyngeal SCC between 2010 and 2019 were collected from the patients’ histopathological records. Of the 120,010 oral and maxillofacial biopsies (2010-2019), 6.9% (8,321 cases) were diagnosed as lip (0.8%, 951 cases), oral cavity (4.9%, 5,971 cases), and oropharyngeal (1.2%, 1,399 cases) SCCs. Most cases were from Brazil’s Southeast (64.5%), where six of the OMPLs analyzed are located. The predominant profile of patients with lip and oral cavity SCC was Caucasian men, with a mean age over 60 years, low schooling level, and a previous history of heavy tobacco consumption. In the oropharyngeal group, the majority were non-Caucasian men, with a mean age under 60 years, had a low education level, and were former/current tobacco and alcohol users. According to data from the Brazilian National Cancer Institute, approximately 9.9% of the total lip, oral cavity, and oropharyngeal SCCs reported over the last decade in Brazil may have been diagnosed at the OMPLs included in the current study. Therefore, this data confirms the contribution of public OMPLs with respect to the important diagnostic support they provide to the oral healthcare services extended by the Brazilian Public Health System.

https://doi.org/10.1590/1807-3107bor-2023.vol37.0126

Identification and recombinant expression of an antimicrobial peptide (cecropin B-like) from soybean pest Anticarsia gemmatalis
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Ramos, Luís Felipe Costa

; Rangel, João Henrique de Oliveira

; Andrade, Guilherme Caldas

; Lixa, Carolina

; Castilho, Livia Vieira Araujo de

; Nogueira, Fábio César Sousa

; Pinheiro, Anderson S.

; Gomes, Fabio Mendonça

; AnoBom, Cristiane Dinis

; Almeida, Rodrigo Volcan

; Oliveira, Danielle Maria Perpétua de

Journal of Venomous Animals and Toxins including Tropical Diseases

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2021, Volume 27 elocation e20200127

Abstract: En | Text: En | PDF: En

Abstract Background Insects can be found in numerous diverse environments, being exposed to pathogenic organisms like fungi and bacteria. Once these pathogens cross insect physical barriers, the innate immune system operates through cellular and humoral responses. Antimicrobial peptides are small molecules produced by immune signaling cascades that develop an important and generalist role in insect defenses against a variety of microorganisms. In the present work, a cecropin B-like peptide (AgCecropB) sequence was identified in the velvetbean caterpillar Anticarsia gemmatalis and cloned in a bacterial plasmid vector for further heterologous expression and antimicrobial tests. Methods AgCecropB sequence (without the signal peptide) was cloned in the plasmid vector pET-M30-MBP and expressed in the Escherichia coli BL21(DE3) expression host. Expression was induced with IPTG and a recombinant peptide was purified using two affinity chromatography steps with Histrap column. The purified peptide was submitted to high-resolution mass spectrometry (HRMS) and structural analyses. Antimicrobial tests were performed using gram-positive (Bacillus thuringiensis) and gram-negative (Burkholderia kururiensis and E. coli) bacteria. Results AgCecropB was expressed in E. coli BL21 (DE3) at 28°C with IPTG 0.5 mM. The recombinant peptide was purified and enriched after purification steps. HRMS confirmed AgCrecropB molecular mass (4.6 kDa) and circular dichroism assay showed α-helix structure in the presence of SDS. AgCrecropB inhibited almost 50% of gram-positive B. thuringiensis bacteria growth. Conclusions The first cecropin B-like peptide was described in A. gemmatalis and a recombinant peptide was expressed using a bacterial platform. Data confirmed tertiary structure as predicted for the cecropin peptide family. AgCecropB was capable to inhibit B. thuringiensis growth in vitro.

https://doi.org/10.1590/1678-9199-jvatitd-2020-0127 695 downloads

Identification and characterisation of SARS-CoV-2 and Human alphaherpesvirus 1 from a productive coinfection in a fatal COVID-19 case
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Herlinger, Alice Laschuk

; Monteiro, Fábio Luís Lima

; D’arc, Mirela

; Moreira, Filipe Romero Rebello

; Westgarth, Harrison James

; Galliez, Rafael Mello

; Mariani, Diana

; da Costa, Luciana Jesus

; de Almeida, Luiz Gonzaga Paula

; Voloch, Carolina Moreira

; Melo, Adriana Suely de Oliveira

; Aguiar, Renato Santana de

; dos Santos, André Felipe Andrade

; Castiñeiras, Terezinha Marta Pereira Pinto

; de Vasconcelos, Ana Tereza Ribeiro

; João Filho, Esaú Custódio

; Escosteguy, Claudia Caminha

; Ferreira Junior, Orlando da Costa

; Tanuri, Amilcar

; Higa, Luiza Mendonça

Memórias do Instituto Oswaldo Cruz

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2021, Volume 116 elocation e210176

Abstract: En | Text: En | PDF: En

BACKGROUND During routine Coronavirus disease 2019 (COVID-19) diagnosis, an unusually high viral load was detected by reverse transcription real-time polymerase chain reaction (RT-qPCR) in a nasopharyngeal swab sample collected from a patient with respiratory and neurological symptoms who rapidly succumbed to the disease. Therefore we sought to characterise the infection. OBJECTIVES We aimed to determine and characterise the etiological agent responsible for the poor outcome. METHODS Classical virological methods, such as plaque assay and plaque reduction neutralisation test combined with amplicon-based sequencing, as well as a viral metagenomic approach, were performed to characterise the etiological agents of the infection. FINDINGS Plaque assay revealed two distinct plaque phenotypes, suggesting either the presence of two severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) strains or a productive coinfection of two different species of virus. Amplicon-based sequencing did not support the presence of any SARS-CoV-2 genetic variants that would explain the high viral load and suggested the presence of a single SARS-CoV-2 strain. Nonetheless, the viral metagenomic analysis revealed that Coronaviridae and Herpesviridae were the predominant virus families within the sample. This finding was confirmed by a plaque reduction neutralisation test and PCR. MAIN CONCLUSIONS We characterised a productive coinfection of SARS-CoV-2 and Herpes simplex virus 1 (HSV-1) in a patient with severe symptoms that succumbed to the disease. Although we cannot establish the causal relationship between the coinfection and the severity of the clinical case, this work serves as a warning for future studies focused on the interplay between SARS-CoV-2 and HSV-1 coinfection and COVID-19 severity.

https://doi.org/10.1590/0074-02760210176

Posicionamento da Sociedade Brasileira de Cardiologia para Gravidez e Planejamento Familiar na Mulher Portadora de Cardiopatia – 2020
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Avila, Walkiria Samuel

; Alexandre, Elizabeth Regina Giunco

; Castro, Marildes Luiza de

; Lucena, Alexandre Jorge Gomes de

; Marques-Santos, Celi

; Freire, Claudia Maria Vilas

; Rossi, Eduardo Giusti

; Campanharo, Felipe Favorette

; Rivera, Ivan Romero

; Costa, Maria Elizabeth Navegantes Caetano

; Rivera, Maria Alayde Mendonça

; Carvalho, Regina Coeli Marques de

; Abzaid, Alexandre

; Moron, Antonio Fernandes

; Ramos, Auristela Isabel de Oliveira

; Albuquerque, Carlos Japhet da Mata

; Feio, Claudine Maia Alves

; Born, Daniel

; Silva, Fábio Bruno da

; Nani, Fernando Souza

; Tarasoutchi, Flavio

; Costa Junior, José de Ribamar

; Melo Filho, José Xavier de

; Katz, Leila

; Almeida, Maria Cristina Costa

; Grinberg, Max

; Amorim, Melania Maria Ramos de

; Melo, Nilson Roberto de

; Medeiros, Orlando Otávio de

; Pomerantzeff, Pablo Maria Alberto

; Braga, Sérgio Luiz Navarro

; Cristino, Sonia Conde

; Martinez, Tania Leme da Rocha

; Leal, Tatiana de Carvalho Andreuci Torres

Arquivos Brasileiros de Cardiologia

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may 2020, Volume 114 N. 5 Pages 849 - 942

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

https://doi.org/10.36660/abc.20200406 10784 downloads

Solitary pancreatic metastasis from breast cancer: case report and review of literature
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Apodaca-Rueda, Márcio

; Chaim, Fábio Henrique Mendonça

; Garcia, Milena da Silva

; Saito, Helena Paes de Almeida de

; Gestic, Martinho Antonio

; Utrini, Murillo Pimentel

; Callejas-Neto, Francisco

; Chaim, Elinton Adami

; Cazzo, Everton

Sao Paulo Medical Journal

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apr 2019, Volume 137 N. 2 Pages 201 - 205

Abstract: En | Text: En | PDF: En

ABSTRACT CONTEXT: Pancreatic metastases from primary malignant tumors at other sites are rare, constituting about 2% of the neoplasms that affect the pancreas. Pancreatic metastasis from breast cancer is extremely rare and difficult to diagnose, because its clinical and radiological presentation is similar to that of a primary pancreatic tumor. CASE REPORT: A 64-year-old female developed a lesion in the pancreatic tail 24 months after neoadjuvant therapy, surgery and adjuvant radiation therapy for right-side breast cancer (ductal carcinoma). She underwent distal pancreatectomy with splenectomy and left adrenalectomy, and presented an uneventful outcome. The immunohistochemical analysis on the surgical specimen suggested that the lesion originated from the breast. CONCLUSION: In cases of pancreatic lesions detected in patients with a previous history of breast neoplasm, the possibility of pancreatic metastasis should be carefully considered.

https://doi.org/10.1590/1516-3180.2017.0144260617 1092 downloads

Anatomical terminology of the internal nose and paranasal sinuses: cross-cultural adaptation to Portuguese
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Bezerra, Thiago Freire Pinto

; Stamm, Aldo

; Anselmo-Lima, Wilma Teresinha

; Fornazieri, Marco Aurélio

; Melo, Nelson D’Ávila

; Balsalobre, Leonardo

; Jotz, Geraldo Pereira

; Leão, Henrique Zaquia

; Nunes, André Alencar Araripe

; Felippu, Alexandre

; Cedin, Antonio Carlos

; Pinheiro-Neto, Carlos D.

; Oliveira, Diego Lima

; Sakano, Eulalia

; Kosugi, Eduardo Macoto

; Araújo, Elizabeth

; Valera, Fabiana Cardoso Pereira

; Pinna, Fábio de Rezende

; Romano, Fabrizio Ricci

; Pádua, Francine Grecco de Melo

; Ramos, Henrique Faria

; Telles Jr., João

; Sá, Leonardo Conrado Barbosa de

; D'Assunção Filho, Leopoldo Marques

; Sennes, Luiz Ubirajara

; Gregório, Luis Carlos

; Sampaio, Marcelo H.

; Santos, Marco César Jorge dos

; Franca, Marco

; Mocellin, Marcos

; Lessa, Marcus Miranda

; Avelino, Melissa Ameloti G.

; Tepedino, Miguel

; Andrade, Nilvano Alves de

; Piltcher, Otavio B.

; Roithmann, Renato

; Pilan, Renata Mendonça

; Meireles, Roberto Campos

; Guimarães, Roberto Eustáquio

; Santos, Rodrigo de Paula

; Pezato, Rogério

; Pignatari, Shirley

; Abdo, Tatiana Telles

; Nakajima, Victor

; Almeida, Washington

; Nakanishi, Marcio

; Voegels, Richard L.

Brazilian Journal of Otorhinolaryngology

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dec 2018, Volume 84 N. 6 Pages 677 - 686

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

Resumo: Introdução: A cirurgia endoscópica funcional endonasal é um procedimento cirúrgico frequente entre os otorrinolaringologistas. Em 2014, a Sociedade Europeia de Rinologia publicou o "Documento Europeu para Posicionamento sobre a Terminologia Anatômica Interna do Nariz e das Cavidades Paranasais" com o objetivo de unificar os termos na língua inglesa. Ainda não dispomos de uma terminologia unificada na língua portuguesa. Objetivo: Adaptação transcultural dos termos anatômicos do nariz e das cavidades paranasais para o português da "European Anatomical Terminology of the Internal Nose and Paranasal Sinuses". Método: Um grupo de rinologistas de todo o Brasil, com experiência em cirurgia endoscópica endonasal, foi convidado a participar da elaboração desse posicionamento sobre os termos anatômicos do nariz e das cavidades paranasais para o português conforme metodologia adaptada da previamente descrita por Rudmik e Smith. Resultados: Os resultados desse documento foram gerados a partir da concordância da maioria dos participantes conforme as sugestões mais populares entre os rinologistas. Uma adaptação transcultural da terminologia anatômica nasossinusal foi consolidada. Sugerimos que se busque uniformizar termos como "concha inferior", "septo nasal", "porção (óssea/cartilaginosa) do septo nasal", "meato (médio/ inferior) nasal", "via da drenagem do seio frontal", "recesso frontal" e "processo uncinado". Conclusão: Consolidamos uma versão adaptada em português da "European Anatomical Terminology of the Internal Nose and Paranasal Sinuses" que auxiliará a publicação de comunicados técnicos, publicações científicas e o ensino dos termos anatômicos internos do nariz e das cavidades paranasais no Brasil.

Abstract Introduction: Functional endonasal endoscopic surgery is a frequent surgical procedure among otorhinolaryngologists. In 2014, the European Society of Rhinology published the "European Position Paper on the Anatomical Terminology of the Internal Nose and Paranasal Sinuses", aiming to unify the terms in the English language. We do not yet have a unified terminology in the Portuguese language. Objective: Transcultural adaptation of the anatomical terms of the nose and paranasal cavities of the "European Anatomical Terminology of the Internal Nose and Paranasal Sinuses" to Portuguese. Methods: A group of rhinologists from diverse parts of Brazil, all experienced in endoscopic endonasal surgery, was invited to participate in the creation of this position paper on the anatomical terms of the nose and paranasal sinuses in the Portuguese language according to the methodology adapted from that previously described by Rudmik and Smith. Results: The results of this document were generated based on the agreement of the majority of the participants according to the most popular suggestions among the rhinologists. A cross-cultural adaptation of the sinonasal anatomical terminology was consolidated. We suggest the terms "inferior turbinate", "nasal septum", "(bone/cartilaginous) part of the nasal septum", "(middle/inferior) nasal meatus", "frontal sinus drainage pathway", "frontal recess" and "uncinate process" be standardized. Conclusion: We have consolidated a Portuguese version of the European Anatomical Terminology of the Internal Nose and Paranasal Sinuses, which will help in the publication of technical announcements, scientific publications and the teaching of the internal anatomical terms of the nose and paranasal sinuses in Brazil.

https://doi.org/10.1016/j.bjorl.2018.08.003 1085 downloads

Delayed healthcare and secondary infections following freshwater stingray injuries: risk factors for a poorly understood health issue in the Amazon
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Sachett, Jacqueline de Almeida Gonçalves

; Sampaio, Vanderson Souza

; Silva, Iran Mendonça

; Shibuya, Akemi

; Vale, Fábio Francesconi

; Costa, Fabiano Peixoto

; Pardal, Pedro Pereira de Oliveira

; Lacerda, Marcus Vinícius Guimarães

; Monteiro, Wuelton Marcelo

Revista da Sociedade Brasileira de Medicina Tropical

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oct 2018, Volume 51 N. 5 Pages 651 - 659

Abstract: En | Text: En | PDF: En

Abstract INTRODUCTION This study aimed to describe the profile of freshwater stingray injuries in the State of Amazonas, Brazilian Amazon, and to identify the associated risk factors for secondary infections. METHODS This cross-sectional study used surveillance data from 2007 to 2014 to identify factors associated with secondary infections from stingray injuries. RESULTS A total of 476 freshwater stingray injuries were recorded, with an incidence rate of 1.7 cases/100,000 person/year. The majority of injuries were reported from rural areas (73.8%) and 26.1% were related to work activities. A total of 74.5% of patients received medical assistance within the first 3 hours of injury. Secondary infections and necrosis were observed in 8.9% and 3.8%, respectively. Work-related injuries [odds ratio (OR) 4.1, confidence interval (CI); 1.87-9.13] and >24 hours from a sting until receiving medical care (OR; 15.5, CI; 6.77-35.40) were independently associated with the risk of secondary bacterial infection. CONCLUSIONS: In this study, work-related injuries and >24 hours from being stung until receiving medical care were independently and significantly associated with the risk of secondary infection. The frequency of infection following sting injuries was 9%. The major factor associated with the risk of secondary bacterial infection was a time period of >24 hours from being stung until receiving medical care.

https://doi.org/10.1590/0037-8682-0356-2017 1142 downloads

Bariatric surgery as a treatment for pseudotumor cerebri: case study and narrative review of the literature
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Cazzo, Everton

; Gestic, Martinho Antonio

; Utrini, Murillo Pimentel

; Mendonça Chaim, Felipe David

; Mendonça Chaim, Fábio Henrique

; Cândido, Elaine Cristina

; da Silveira Jarolavsky, Luciana Bueno

; de Almeida, Ana Maria Neder

; Pareja, José Carlos

; Chaim, Elinton Adami

Sao Paulo Medical Journal

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mar 2018, Volume 136 N. 2 Pages 182 - 187

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

RESUMO CONTEXTO: O pseudotumor cerebri ocorre quando há aumento na pressão intracraniana sem causa subjacente, comumente levando a perda visual. É mais comum em mulheres obesas em idade fértil. RELATO DE CASO: Mulher de 46 anos, foi admitida com hipertensão intracraniana idiopática diagnosticada há dois anos, que levou a cefaleia refratária crônica e perda estimada de 30% da acuidade visual, associada a papiledema bilateral. Apresentou melhora parcial da cefaleia com acetazolamida, mas a perda visual persistiu. A pressão intracraniana era de 34 cmH2O. Apresentava índice de massa corpórea de 39,5 kg/m2, associado a hipertensão arterial. Tomografia computadorizada com contraste endovenoso de crânio não apresentou anormalidades. Foi submetida ao bypass gástrico em Y de Roux, com evolução pósoperatória sem intercorrências. Um mês após a cirurgia, apresentou perda de peso em excesso de 24%. Um exame oftalmológico demonstrou ausência de perda visual e remissão do papiledema; não houve novos episódios de cefaleia após a cirurgia. Houve também resolução completa da hipertensão arterial. A pressão intracraniana caiu para 24 cmH2O após seis meses da cirurgia. CONCLUSÃO: Embora a condição seja usualmente associada à obesidade, há escassos relatos de cirurgia bariátrica em indivíduos com pseudotumor cerebri. Nos casos previamente estudados, há alta prevalência de resolução ou de melhora da doença após a cirurgia bariátrica. Não há consenso sobre qual é a técnica cirúrgica de escolha. Portanto, mais estudos são necessários para estabelecer um algoritmo específico.

ABSTRACT CONTEXT: Pseudotumor cerebri occurs when there is an increase in intracranial pressure without an underlying cause, usually leading to loss of vision. It is most commonly observed in obese women of child-bearing age. CASE REPORT: A 46-year-old woman presented at our service with idiopathic intracranial hypertension that had been diagnosed two years earlier, which had led to chronic refractory headache and an estimated 30% loss of visual acuity, associated with bilateral papilledema. She presented partial improvement of the headache with acetazolamide, but the visual loss persisted. Her intracranial pressure was 34 cmH2O. She presented a body mass index of 39.5 kg/m2, also associated with high blood pressure. Computed tomography of the cranium with endovenous contrast did not show any abnormalities. She underwent Roux-en-Y gastric bypass with uneventful postoperative evolution. One month following surgery, she presented a 24% excess weight loss. An ophthalmological examination revealed absence of visual loss and remission of the papilledema. There were no new episodes of headache following the surgery. There was also complete resolution of high blood pressure. The intracranial pressure decreased to 24 cmH2O, six months after the surgery. CONCLUSION: Although the condition is usually associated with obesity, there are few reports of bariatric surgery among individuals with pseudotumor cerebri. In cases studied previously, there was high prevalence of resolution or improvement of the disease following bariatric surgery. There is no consensus regarding which technique is preferable. Thus, further research is necessary in order to establish a specific algorithm.

https://doi.org/10.1590/1516-3180.2016.0305060117 1442 downloads

MANAGEMENT OF PANCREATICOPLEURAL FISTULAS SECONDARY TO CHRONIC PANCREATITIS
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CAZZO, Everton

; APODACA-RUEDA, Márcio

; GESTIC, Martinho Antonio

; CHAIM, Fábio Henrique Mendonça

; SAITO, Helena Paes de Almeida de

; UTRINI, Murillo Pimentel

; CALLEJAS-NETO, Francisco

; CHAIM, Elinton Adami

ABCD. Arquivos Brasileiros de Cirurgia Digestiva (São Paulo)

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sep 2017, Volume 30 N. 3 Pages 225 - 228

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

RESUMO Introdução: A fístula pancreaticopleural é complicação rara da pancreatite crônica. Objetivo: Descrever a fístula pancreaticopleural consequente à pancreatite crônica e fazer revisão extensa da literatura sobre o tópico. Métodos: Revisão narrativa abrangente através de pesquisa online nas bases de dados Medline e Lilacs para artigos publicados nos últimos 20 anos. Resultados: Houve 22 relatos de casos e quatro séries de casos selecionadas. A principal indicação para o tratamento cirúrgico é a falha de tratamentos clínicos e/ou endoscópicos. A cirurgia é baseada na drenagem pancreática interna, especialmente por meio de pancreaticojejunostomias e/ou ressecções pancreáticas. Conclusão: A fístula pancreaticopleural é complicação rara da pancreatite crônica e o procedimento de Frey pode ser opção terapêutica apropriada em casos selecionados quando os tratamentos clínico e endoscópico não obtiverem êxito.

ABSTRACT Introduction: Pancreaticopleural fistula is a rare complication of chronic pancreatitis. Objective: To describe pancreaticopleural fistula due to chronic pancreatitis and perform an extensive review of literature on this topic. Methods: Comprehensive narrative review through online research on the databases Medline and Lilacs for articles published over the last 20 years. There were 22 case reports and four case series selected. Results: The main indication for surgical treatment is the failure of clinical and/or endoscopic treatments. Surgery is based on internal pancreatic drainage, especially by means of pancreaticojejunostomy, and/or pancreatic resections. Conclusion: Pancreaticopleural fistula is a rare complication of chronic pancreatitis and the Frey procedure may be an appropriate therapeutic option in selected cases when clinical and endoscopic treatments are unsuccessful.

https://doi.org/10.1590/0102-6720201700030014 4524 downloads

10.

Peripheral neuropathy in a copper-deficient goat
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Almeida, Valdir Morais de

; Chaves, Hisadora Advincula da Silva

; Silva Filho, Givaldo Bom da

; Ribeiro, Danielle Pimentel

; Braga, Thaiza Campelo

; Mendonça, Fábio de Souza

Ciência Rural

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2017, Volume 47 N. 10 elocation e20170248

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

RESUMO: Este trabalho tem como objetivo descrever um caso de neuropatia periférica em um caprino com deficiência de cobre e destaca as características clínicas e patológicas da doença. O caprino apresentava baixo escore corporal, hiporexia, alopecia, acromotriquia, protração do membro posterior esquerdo, com arrastar de pinça do membro posterior, dificuldade para se levantar e anemia microcítica normocrômica. A concentração sérica de cobre estava significantemente baixa (2.0µmol L-1), enquanto a concentração de ferro estava alta (51.0µmol L-1). O principal achado de necropsia consistiu em redução do volume do músculo quadríceps vasto lateral. Histologicamente, havia atrofia do músculo quadríceps vasto lateral, infiltrado linfocítico, presença de células satélites, macrófagos e substituição das fibras musculares por tecido conjuntivo. No nervo femoral, havia degeneração axonal com dilatação da bainha de mielina e presença de vacúolos, geralmente em cadeia, contendo, ocasionalmente, restos axonais ou macrófagos. Os achados clínicos, laboratoriais e patológicos são compatíveis com neuropatia periférica devido à deficiência severa de cobre.

ABSTRACT: This report aimed to describe a case of peripheral neuropathy in a copper-deficient goat, and highlights the clinical, and pathological features of the disease. The goat had low body score, hyporexia, alopecia, achromotrichia, left hindlimb protraction, paralysis with dragging of digit and difficulty to stand up and microcytic normochromic anemia. Copper concentration in serum was markedly lower (2.0µmol L-1) whereas the iron serum content was significantly increased (51.0µmol L-1). The main gross alteration was the reduction of the quadriceps vastus laterallis muscle volume. Histologically, there was atrophy of the quadriceps vastus laterallis muscle and presence of satellite cells, infiltration of lymphocytes, macrophages and replacement of the fibers by connective tissue. In the femoral nerve, there was axonal degeneration with myelin sheath expansion and presence of vacuoles, usually in chains and containing axonal debris or macrophages. Clinical, laboratorial and pathologic findings are consistent with peripheral neuropathy due to a severy copper deficiency.

https://doi.org/10.1590/0103-8478cr20170248 1974 downloads

11.

Biodegradable films of starch/PVOH/alginate in packaging systems for minimally processed lettuce (Lactuca sativa L.)
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Brandelero, Renata Paula Herrera

; Brandelero, Evandro Martin

; Almeida, Fábio Mendonça de

Ciência e Agrotecnologia

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oct 2016, Volume 40 N. 5 Pages 510 - 521

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

RESUMO As embalagens biodegradáveis podem substituir as não biodegradáveis quando a vida de prateleira do produto embalado é relativamente curta, como no caso dos alimentos minimamente processados. Neste trabalho o objetivo foi avaliar a eficiência de filmes biodegradáveis de amido/PVOH/alginato adicionados de 0 ou 0,5% de óleo essencial de copaíba (EOCP) ou de capim limão (EOLM) em comparação aos filmes de PVC ao longo do armazenamento de alfaces minimamente processadas. As alfaces cortadas em tiras de 1 cm foram dispostas em bandejas de polipropileno armazenadas a 6 ± 2 °C por 8 dias. Filmes de PVC foram utilizados como controle. Os biofilmes apresentaram 11,43 - 8,11MPa de resistência, 11,3 - 13,22% de elongação e permeabilidade ao vapor de água (PVA) entre 0,5 - 4,04 x 10-12 g.s-1.Pa-1.m-1, sendo os filmes biodegradáveis considerados adequados á aplicação devido as propriedades apresentadas. As alfaces armazenadas em PVC apresentaram queda brusca dos sólidos solúveis totais (SST), menor luminosidade (L), maior intensidade da cor amarela (b) e perda de massa (2%) oito vezes menor que as armazenadas em filmes biodegradáveis (12-16%) aos 8 dias de armazenamento. A análise multivariada evidenciou que as alfaces em filmes de PVC perderam qualidade aos 2 dias de armazenamento diferindo dos demais tratamentos. Já alfaces armazenadas em biofilmes por 2 e 4 dias apresentaram maior similaridade com as alfaces recém colhidas (tempo zero). Os filmes biodegradáveis foram considerados viáveis ao armazenamento de alface minimamente processada.

ABSTRACT Biodegradable packaging may replace non-biodegradable materials when the shelf life of the packaged product is relatively short, as in minimally processed foods. The objective of this work was to evaluate the efficiency of biodegradable films comprising starch/polyvinyl alcohol (PVOH)/alginate with the addition of 0 or 0.5% of essential oil of copaiba (EOCP) or lemongrass (EOLM) compared to poly-vinyl chloride (PVC) films in the storage of minimally processed lettuce. Lettuce samples cut into 1-cm strips were placed in polypropylene trays wrapped with biodegradable films and stored at 6 ± 2 °C for 8 days. PVC films were used as controls. The biofilms presented 11.43-8.11 MPa resistance and 11.3-13.22% elongation, with water vapor permeability (WVP) of 0.5-4.04 x 10-12 g. s-1.Pa-1.m-1; thus, the films' properties were considered suitable for the application. The lettuce stored in PVC presented minor total soluble solids (TSS), less luminosity (L), higher intensity of yellow color (b), and eight times less mass loss than that stored in biodegradable films. Multivariate analysis showed that the lettuce lost quality after 2 days of storage in PVC films, representing a different result from the other treatments. Lettuce stored in biodegradable films for 2 and 4 days showed a greater similarity with newly harvested lettuce (time zero). The films with or without the addition of essential oil showed similar characteristics. Biodegradable films were considered viable for the storage of minimally processed lettuce.

https://doi.org/10.1590/1413-70542016405010516 3578 downloads

12.

Avaliação da toxicidade aguda pré-clínica do extrato metanólico das cascas do caule de Parahancornia amapa (Apocynaceae)
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SILVA, Simoni Lobato da

; NASCIMENTO, Alessandra Azevedo do

; RIBEIRO, Edson Fábio Brito

; RIBEIRO, Renata Barbosa

; ALVES, Cleiziane Melo

; SANTOS, André Mendonça dos

; BURMANN, Aurélio Pinheiro Rodrigues

; MIRA NETO, Raimundo de Almeida

Acta Amazonica

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mar 2016, Volume 46 N. 1 Pages 73 - 80

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

RESUMOParahancornia amapa é uma espécie endêmica do Estado do Amapá, na região Amazônica. Este estudo teve como objetivo avaliar a toxicidade aguda do extrato metanólico das cascas do caule de P. amapa. Diferentes concentrações do extrato foram adicionadas aos camarões de salmoura (Artemia salina) e a concentração letal média (CL50) foi avaliada. Os resultados desse ensaio indicaram que o extrato não era tóxico. A toxicidade aguda foi estudada em ratos Wistar (machos e fêmeas) após dose única (2000 mg kg-1) por gavagem. Ingestão de água e comida, peso corporal, alterações comportamentais e mortalidade foram anotados. Amostras de sangue foram coletadas para medições de parâmetros hematológicos e bioquímicos. Os animais foram eutanasiados e seus órgãos (coração, rins, fígado e pulmões) submetidos à análise macroscópica e histopatológica. Não houve mortalidade ou qualquer sinal de mudança de comportamento ou toxicidade observada após a administração oral do extrato. No entanto, observou-se um aumento significativo (p<0,05) sobre o consumo de água de ratas tratadas com o extrato de P. amapa (127,64 mL) quando comparadas ao grupo controle (101,93 mL). Um aumento significativo (p <0,05) na contagem das plaquetas também foi observado tanto em ratos machos (288,00x103 mm3) quanto em fêmeas (220,83x103 mm3, respectivamente) que receberam o extrato quando comparados com seus respectivos grupos controle (128,33x103 mm3; 109,50x103 mm3). Alterações histopatológicas não foram relacionadas ao tratamento com extrato em nenhum dos órgãos analisados. Estes resultados sugerem que o extrato de P. amapa tem um efeito geral não-tóxico.

ABSTRACTParahancornia amapa is an endemic plant species of Amapá in the Amazon region. This study aimed to evaluate the acute toxicity of methanol extract of the bark of P. amapa. Different concentrations of the extract were added to the brine shrimps (Artemia salina) and 50% lethality concentration (LC50) was assessed. The results of the brine-shrimp assay indicated that the extract was found to be non-toxic. Acute toxicity was studied in Wistar rats (males and females) after single dose (2000 mg kg-1) by oral gavage. Food and water intake, body weight, general behavioral changes and mortality of animals were noted. Blood samples were collected for haematological and serum biochemical parameters measurements. Subsequently, they were euthanized and their organs (heart, kidneys, liver and lungs) subjected to macroscopic and histopathological analysis. There was no mortality or any sign of behavioral change or toxicity observed after oral administration of the extract. Nevertheless, it was observed a significant increase (p<0.05) on water intake of female rats treated with the extract of P. amapa (127.64 mL) when compared to control group (101.93 mL). A significant increase (p<0.05) in platelet count was also observed in both male (288.00x103 mm3) and female (220.83x103 mm3) rats that received the extract when compared to their respective control groups (128.33x103 mm3; 109.50x103 mm3). Histopathological changes were not related to the treatment with extract in any of the analyzed organs. These results suggest that P. amapa extract has a non-toxic effect.

https://doi.org/10.1590/1809-4392201501746 5383 downloads

13.

Aspectos bioecológicos e genético-comportamentais envolvidos na conservação da abelha Jandaíra, Melipona subnitida Ducke (Apidae, Meliponini), e o uso de ferramentas moleculares nos estudos de diversidade
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Silva, Geice Ribeiro da

; Pereira, Fábia de Mello

; Souza, Bruno de Almeida

; Lopes, Maria Teresa do Rego

; Campelo, José Elivalto Guimarães

; Diniz, Fábio Mendonça

Arquivos do Instituto Biológico

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sep 2014, Volume 81 N. 3 Pages 299 - 308

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

A abelha sem ferrão Melipona subnitida atualmente está presente em quase toda a região nordeste, em função da boa adaptabilidade ao semiárido nordestino e do potencial econômico-ecológico proporcionado pela produção de mel e pela polinização de cultivos em condições de confinamento. Apesar disso, é uma espécie ameaçada devido a processos de degradação ambiental, dentre os quais estão o desmatamento, o uso indiscriminado de agrotóxicos e o extrativismo. Tais interferências tendem a isolar as populações de Jandaíra, provocando uma queda na variabilidade genética e, consequentemente, uma redução na capacidade adaptativa da espécie. Porém, técnicas de biologia molecular estão sendo implementadas, possibilitando que populações desse tipo sejam avaliadas quanto ao seu grau de variabilidade genética. Marcadores moleculares do tipo microssatélites de DNA vêm sendo bastante usados, porém, em função do alto custo exigido para seu desenvolvimento, diversos estudos vêm empregando microssatélites transferidos de táxons próximos com amplo sucesso em estudos voltados à caracterização e à diversidade genética. Dessa forma, a presente revisão objetivou avaliar os mais relevantes aspectos bioecológicos e genético-comportamentais envolvidos na conservação da abelha Jandaíra, a fim de auxiliar na avaliação do grau de diversidade genética da espécie, bem como da sua distribuição entre indivíduos e populações da abelha sem ferrão M. subnitida.

The stingless bee Melipona subnitida is now present almost everywhere in the Brazilian Northeastern, as a consequence of its good adaptability to the semiarid and economic and ecological potential offered by the honey production and pollination of commercial crops under confined conditions. Nevertheless, it is an endangered species due to environmental degradation processes, among which are: deforestation, indiscriminate use of pesticides and honey extraction. Such interference tends to isolate populations of Jandaíra causing a decrease in genetic variability, and therefore a reduction in the adaptive capacity of the species. However, advanced Molecular Biology techniques have been used allowing such populations to be assessed for their degree of genetic variability. Molecular markers such as microsatellite DNA are widely applied to genetic diversity studies. However, due to the high costs required for their development, several studies have been focused on the use of microsatellites transferred from closely related taxa with much success in studies on the genetic characterization of species and their populations. Therefore, this review aimed to evaluate the most relevant ecological and behavioral aspects in order to assist the population genetic studies of the stingless bee M. subnitida.

https://doi.org/10.1590/1808-1657000812012 6988 downloads

14.

Cirurgia colorretal videolaparoscópica: experiência inicial na abordagem de 90 pacientes, no Programa de Pós-graduação sensu lato (residência e especialização) em Coloproctologia, pelo Grupo de Coloproctologia de Belo Horizonte
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Lima Junior, Antonio Carlos Barros

; Rodrigues, Fabio Gontijo

; Santos, Guilherme de Almeida

; Coutinho, Caroline Pinto

; Silva, Estevan Guillermo Vigil Verastegui

; Neves, Peterson Martins

; Constantino, José Roberto Monteiro

; Braga, Áurea Cássia Gualbeto

; Ferreira, Renata Magali Ribeiro Silluzio

; Alvarenga, Isabella Mendonça

; Lanna, David de

; Teixeira, Ricardo Guimarães

; Valle Junior, Heraldo Neves

; Leite, Sinara Mônica Oliveira

; Costa, Luciana Maria Pyramo

; Silva, Ilson Geraldo da

; Cruz, Geraldo Magela Gomes da

Revista Brasileira de Coloproctologia

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jun 2011, Volume 31 N. 2 Pages 169 - 183

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

O objetivo do trabalho foi proceder a uma revisão criteriosa de uma casuística de 90 pacientes submetidos às ressecções colorretais por via videolaparoscópica no decurso de 12 meses (maio de 2009 a maio de 2010). A média etária foi de 62,1 anos, com extremos de 20 e 93 anos, sendo a maioria dos pacientes do sexo feminino (52; 57,8%). O diagnóstico mais comum foi câncer colorretal, com 60 casos (66,7%), seguido pelos pólipos colorretais, com 12 casos (13,4%), doença diverticular, com sete casos (7,8%), e outros diagnósticos, com 11 casos (12,1%). O preparo intestinal mais realizado foi com o Picolax (53 casos; 58,9%); 76 pacientes foram submetidos à colonoscopia e biópsia (84,4%). As cirurgias mais realizadas foram as retossigmoidectomias (54 casos; 60,0%), seguidas pelas hemicolectomias direitas (20 casos; 22,2%). O tempo de execução da maioria das cirurgias foi entre duas e três horas (34 casos; 37,8%) e entre três e quatro horas (24 casos, 26,7%), com média de 203 minutos. Em 81 casos, houve anastomoses (90,0%), a maioria mecânica intra-abdominal (55,6%) e manual extra-abdominal (25 casos; 27,8%), tendo sido o conjunto de grampeadores circulares e lineares articulados os recursos mais utilizados (50 casos; 55,6%). O eletrocautério foi usado em 68 pacientes (75,6%). A incisão abdominal mais usada foi a de Mallard (39 casos, 43,4%) e a mediana (22 casos; 24,4%), sendo as extensões mais comuns entre 6 e 10 cm (55 casos; 78,6%). Houve 12 intercorrências peroperatórias (13,2%), que levaram a conversões para laparotomia. A média de dimensões das peças cirúrgicas foi 33,2 cm, a maioria entre 21 e 30 cm (51 casos, 56,8%). Houve 13 complicações pós-operatórias (14,4%), 11 delas cirúrgicas (12,2%) e duas clínicas (2,2%), das quais decorreram três óbitos, sendo dois cirúrgicos e um clínico. O tempo médio de internamento foi de 5,3 dias, tendo sido 57 (63,3%) a até cinco dias. Foram para o CTI 28 pacientes (31,1%), sobretudo por conta de comorbidades (22 casos; 24,4%). A liberação de dieta oral foi de um dia para 49 pacientes (54,5%). Os autores comparam os resultados com a bibliografia correlata.

The objective was to undertake a careful review of a sample of 90 patients who underwent laparoscopic colorectal resections through the course of 12 months (May 2009 to May 2010). The average age was 62.1 years, with extremes of 20 and 93 years, mostly female (52 patients; 57.8%). Bowel preparation was performed with Picolax in 53 patients (58.9%); 76 patients underwent colonoscopy and biopsy (84.4%). Colorectal cancer was the most common disease (60 cases; 66.7%), followed by polyps (12 cases; 13.4%), diverticular disease (7 cases; 7.8%) and other diseases (11 cases; 12,1%). The surgeries performed were retosigmoidectomy (54 cases; 60.0%), followed by right hemicolectomy (20 cases; 22.2%) and others. Most of the surgeries were carried out between 2 and 3 hours (34 cases; 37.8%) and between 3 and 4 hours (24 cases; 26.7%), with an average of 203 minutes. In 81 cases, there were anastomosis (90.0%), most mechanical intra-abdominal (55.6%) and manual extra-abdominal (25 cases, 27.8%), being the set of circular and linear articulated staplers the most commonly used features (50 cases, 55.6%). Electrocautery was used in 68 patients (75.6%). The most used abdominal incision was Mallard incision (39 cases; 43.4%) and median incision (22 cases; 24.4%), being the most common extensions between 6.0 and 10.0 cm (55 cases; 78.6%). There were 12 postoperative complications (13.2%), leading to conversions to laparotomy. The average size of surgical specimens was 33.2 cm, mostly between 21 and 30 cm (51 cases; 56.8%). There were 13 postoperative complications (14.4%), being 11 surgical (12.2%) and two clinics (2.2%) of which took place three deaths, being two from surgery and one from comorbidities. The mean length of hospital stay was 5.3 days, and 57 patients (63.3%) up to 5 days. 28 patients were admitted in the ICU (31.1%), mainly because of comorbidities (22 cases; 24.4%). The release of oral intake was a day for 49 patients (54.5%). The authors compare the results with related literature and confirm the similarities.

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15.

Análise comparativa inicial de critérios oncológicos de 120 pacientes submetidos a cirurgias colorretais por via laparotômica (60 pacientes) e por via videolaparoscópica (60 pacientes) para câncer colorretal no Programa de Pós-graduação sensu lato pelo Grupo de Coloproctologia de Belo Horizonte
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Constantino, José Roberto Monteiro

; Neves, Peterson Martins

; Lima Junior, Antonio Carlos Barros

; Rodrigues, Fabio Gontijo

; Santos, Guilherme de Almeida

; Coutinho, Caroline Pinto

; Faria, Flavia Fontes

; Oliveira, Rodrigo Guimarães

; Silva, Estevan Guillermo Vigil Verastegui

; Braga, Áurea Cássia Gualbeto

; Ferreira, Renata Magali Ribeiro Silluzio

; Alvarenga, Isabella Mendonça

; Lanna, David de

; Teixeira, Ricardo Guimarães

; Valle Junior, Heraldo Neves

; Leite, Sinara Mônica Oliveira

; Costa, Luciana Maria Pyramo

; Silva, Ilson Geraldo da

; Cruz, Geraldo Magela Gomes da

Revista Brasileira de Coloproctologia

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jun 2011, Volume 31 N. 2 Pages 184 - 196

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

O objetivo do trabalho foi proceder a uma revisão criteriosa de uma casuística de 120 pacientes portadores de câncer colorretal operados por via videolaparoscópica (grupo-Video, 60 pacientes) e por via laparotômica (grupo-Lap, com 60 pacientes), no decurso de 12 meses (maio de 2009 a maio de 2010). A média etária foi de 58 anos, sendo 58,8 anos no grupo-Lap e 57,3 no grupo-Video, e a maioria era do sexo feminino em ambos os grupos (grupo-Lap - 55,0% e grupo-Video - 61,7%, com média de 58,3 anos). Todos os pacientes de ambos os grupos foram submetidos à colonoscopia e biópsia, com diagnóstico histopatológico de adenocarcinoma. Na distribuição dos tumores pelo intestino grosso no grupo-Lap, 43 se localizavam no reto e sigmoide (71,7%) contra 45 no grupo-Video (75,0%), mas com diferenças entre reto baixo (grupo-Lap, 13,3%; grupo-Video, 16,7%) e alto (grupo-Lap, 30,0%; grupo-Video, 16,7%), sigmoide e retossigmoide (grupo-Lap, 28,4%; grupo-Video, 41,6%). As cirurgias mais realizadas foram as retossigmoideCtomias abdominais altas (grupo-Lap, 27 casos, 45,0%; grupo-Video, 33 casos, 55,0%), seguidas pelas hemicolectomias direitas com anastomose íleo-transverso (grupo-Lap, 16 casos, 26,6%; e grupo-Video, 13 casos, 21,7%). As extensões das peças cirúrgicas foram maiores no grupo-Lap (média de 46,1 cm contra 30,0 cm no grupo-Video) em decorrência de maior número de cirurgias que resultaram peças de grandes dimensões. Quando se comparam as mesmas técnicas cirúrgicas, a diferença não persiste, como nos casos das retossigmoidectomias (grupo-Lap com 32 casos, média de 28,2 cm; grupo-Video com 39 casos, com média de 26,6 cm). No tocante à gradação TNM dos tumores, a gradação T3N0M0 foi a mais comum: grupo-Lap com 30 casos (50,0%) e grupo-Video com 35 casos (58,4%). No tocante à contagem de linfonodos nas peças cirúrgicas, nenhuma diferença foi notada: total de 810 linfonodos no grupo-Lap, com média de 13,5 linfonodos por peça, e total de 862 linfonodos no grupo-Video, com média de 14,3 linfonodos por peça. Não houve diferença também no tocante à contagem de linfonodos nas peças cirúrgicas, mais comuns entre 11 e 15: 34 casos no grupo-Lap (56,7%) e 38 no grupo-Video (63,3%). Assim, nenhuma diferença foi notada entre os dois grupos (grupo-Lap e grupo-Video) no tocante aos critérios oncológicos cirúrgicos.

The objective was to undertake a careful review of a consecutive series of 120 patients with colorectal cancer approached by laparoscopic surgery (Video-group, 60 patients) and by laparotomy (Lap-group, 60 patients), during 12 months (May 2009 to May 2010). The average age was 58 years and 58.8 years in group-Lap and 57.3 years in Video-group, the majority being females in both groups (Lap-group - 55.0% and Video-group - 61.7%, general mean 58.3 years). All patients in both groups underwent colonoscopy and biopsy with histopathologic diagnosis of adenocarcinoma. As far as distribution of tumors in the large intestine in Lap-group, 43 tumors were located in the rectum, rectosigmoid and sigmoid colon (71.7%) versus 45 in Video-group (75.0%), but with differences between low rectum (Lap-group 13,3%, Video-group 16.7%) and upper rectum (Lap-group 30.0%, Video-group 16.7%), sigmoid and rectosigmoid (Lap-group 28.4%, Video-group 41.6%). The most performed surgery was abdominal rectosigmoidectomy (Lap-group 27 cases, 45.0%; and Video-group 33 cases, 55,0%), followed by right hemicolectomy (Lap-group 16 cases, 26,6%; and Video-group 13 cases, 21.7%). The extensions of the surgical specimens were greater in Lap-group (mean 46.1 cm vs. 30.0 cm in Video-group), but due to higher number of surgeries that resulted in longer specimens. When comparing same surgical techniques, the difference does not persist as in cases of retosigmoidectomy (Lap-group with 32 cases, mean 28.2 cm; and Video-group with 39 cases, mean 26.6 cm). With regard to TNM staging T3N0M0, tumors was the most common in Lap-group with 30 cases (50.0%) and Video-group with 35 cases (58.4%). Regarding the lymph nodes count in surgical specimens, no difference was noted: total of 810 lymph nodes in specimens of Lap-group with a mean of 13.5 nodes per specimen, and total of 862 lymph nodes in Video-group with an average of 14.3 nodes per specimen. No difference was noted in relation to the count of lymph nodes in surgical specimens: the number of nodes was most commonly between 11 and 15 per specimen: 34 cases in Lap-group (56.7%) and 38 in Video-group (63.3%). Thus, no difference was noted between the two groups (Lap-group and Video-group) as far as oncologic and surgical criteria are concerned.

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