Existence of SARS-Cov-2 in the Peritoneal Fluid / Existência de SARS-Cov-2 no líquido peritoneal

Abstract Objective To determine the existence of SARS-CoV-2 in the peritoneal fluid to assess the risk of exposure through surgical smoke and aerosolization threatening healthcare workers during abdominal surgery. Background SARS-CoV-2 is a respiratory virus and possible ways of viral transmission are respiratory droplets, close contact, and fecal-oral route. Surgeries pose risk for healthcare workers due to the close contact with patients. Aerosolized particles may be inhaled via the leaked CO2 during laparoscopic procedures and surgical smoke produced by electrocautery. Methods All the data of 8 patients, who were tested positive for COVID-19, were collected between August 31, 2020 and April 30, 2021. Recorded clinicopathologic data included age, symptoms, radiological and laboratory findings, antiviral treatment before surgery, type of surgery and existence of the virus in the peritoneal fluid. Nasopharyngeal swab RT-PCR was used for the diagnosis. COVID-19 existence in the peritoneal fluid was determined by RT-PCR test as well. Results All 8 COVID-19 positive patients were pregnant, and surgeries were cesarean sections. 1 of the 8 patients was febrile during surgery. Also only 1 patient had pulmonary radiological findings specifically indicating COVID-19 infection. Laboratory findings were as follows: 4 of 8 had lymphopenia and all had elevated D-dimer levels. Peritoneal and amniotic fluid samples of all patients were negative for SARS-CoV-2. Conclusion SARS-CoV-2 exposure due to aerosolization or surgical fumes does not seem to be likely, provided the necessary precautions are taken.

Resumo Objetivo Determinar a existência de SARS-CoV-2 no fluido peritoneal para avaliar o risco de exposição através da fumaça cirúrgica e aerossolização que ameaçam os profissionais de saúde durante a cirurgia abdominal. Contexto O SARS-CoV-2 é um vírus respiratório e as possíveis formas de transmissão viral são gotículas respiratórias, contato próximo e rota fecal-oral. As cirurgias representam risco para os profissionais de saúde devido ao contato próximo com os pacientes. As partículas aerossolizadas podem ser inaladas através do CO2 vazado durante os procedimentos laparoscópicos e a fumaça cirúrgica produzida pela eletrocauterização. Métodos Todos os dados de 8 pacientes, que foram testados positivos para COVID-19, foram coletados entre 31 de agosto de 2020 e 30 de abril de 2021. Dados clinicopatológicos registrados incluíam idade, sintomas, achados radiológicos e laboratoriais, tratamento antiviral antes da cirurgia, tipo de cirurgia e existência do vírus no fluido peritoneal. O diagnóstico foi feito através do swab nasofaríngeo RT-PCR. A existência de COVID-19 no fluido peritoneal foi determinada pelo teste de RT-PCR também. Resultados Todas as 8 pacientes positivas para COVID-19 estavam grávidas, e as cirurgias eram cesarianas. 1 das 8 pacientes estava com febre durante a cirurgia. Também apenas 1 paciente tinha achados radiológicos pulmonares especificamente indicando infecção por COVID-19. Os achados laboratoriais foram os seguintes: 4 de 8 tinham linfopenia e todas apresentavam níveis elevados de D-dímero. Amostras de fluido peritoneal e líquido amniótico de todas as pacientes foram negativas para SARS-CoV-2. Conclusão A exposição ao SARS-CoV-2 devido à aerossolização ou fumaças cirúrgicas não parece ser provável, desde que sejam tomadas as precauções necessárias.

Análise das gestações ectópicas íntegras tratadas com o protocolo de dose única de metotrexato / Analysis of unruptured ectopic pregnancies treated with single-dose methotrexate protocol

Objetivo: Avaliar o índice de sucesso do tratamento da gravidez ectópica com o protocolo de dose única do metotrexato e verificar sua correlação com variáveis clínicas e dados dos exames complementares. Métodos: É um estudo epidemiológico observacional, analítico, retrospectivo, de delineamento transversal. Foi realizado de janeiro de 2014 a agosto de 2020 em um hospital público, de ensino, em nível terciário, do Sul do Brasil. Em 73 casos com diagnóstico de gestação ectópica íntegra, foi utilizado o protocolo de dose única de metotrexato intramuscular, com a dose de 50 mg/m2 de superfície corporal. As variáveis do estudo foram relacionadas ao sucesso do tratamento e abordaram as características clínicas na admissão, dos exames complementares e do tratamento realizado. As variáveis foram comparadas por análise de regressão de Poisson. O nível de significância estabelecido foi de p < 0,05. Resultados: O índice de sucesso foi de 83,6%, e em nove casos foi necessária uma segunda dose da medicação. Nível de ß-hCG inicial superior a 5.000 mUI/mL foi relacionado a menor chance de sucesso (odds ratio ajustado de 0,20 [0,05-0,95]). Tamanho da imagem anexial, presença de líquido livre na cavidade abdominal e demais variáveis estudadas não afetaram a chance de sucesso do tratamento. Conclusão: O protocolo de dose única de metotrexato mostrou-se uma opção válida para o tratamento da gestação ectópica íntegra, notadamente quando o nível de ß-hCG inicial é inferior 5.000 mUI/mL.

Objective: The purpose of the present study is to evaluate the success rate of treatment of ectopic pregnancy with the single-dose methotrexate protocol and to verify its correlation with clinical variables and complementary exam data. Methods: This is a retrospective epidemiological observational analytical cross-sectional study. It was carried out from January 2014 to August 2020 in a tertiary level teaching hospital in southern Brazil. In 73 cases with a diagnosis of intact ectopic pregnancy, the intramuscular methotrexate single-dose protocol was applied with a dose of 50 mg/m2 of body surface. The study variables were related to the success of the treatment and addressed the clinical characteristics on admission, the complementary exams and the treatment performed. The variables were compared by Poisson regression analysis. The level of significance was set at p < 0.05. Results: The success rate was 83.6%, and in nine cases a second dose of the medication was necessary. An initial ß-hCG level greater than 5,000 mIU/mL was related to a lower chance of success (adjusted odds ratio of 0.20 [0.05- 0.95]). The size of the adnexal image, the presence of free fluid in the abdominal cavity and other variables studied did not affect the chance of a successful treatment. Conclusion: The methotrexate single-dose protocol proved to be a valid option for the treatment of intact ectopic pregnancy, notably when the initial ß-hCG level is below 5,000 mIU/mL.

Diagnóstico, manejo y tratamiento de pacientes con peritonitis secundaria en una unidad de cirugía general / Diagnosis, management and treatment of patients with secondary peritonitis in a general surgery unit

La peritonitis es una inflamación aguda o crónica del peritoneo que generalmente tiene un origen infeccioso. Existen varios tipos, siendo la de tipo secundario la más frecuente. El término peritonitis secundaria se define como la inflamación localizada o generalizada de la membrana peritoneal causada por infección polimicrobiana posterior a la ruptura traumática o espontánea de una víscera o secundaria a la dehiscencia de anastomosis intestinales. Esta entidad se caracteriza por la presencia de pus en la cavidad peritoneal o de líquido; que, en el estudio microscópico directo, contiene leucocitos y bacterias. El tratamiento de esta patología constituye una urgencia y puede ser de tipo clínico y/o quirúrgico. El objetivo del manejo operatorio se basa en identificar y eliminar la causa de la infección, recoger muestras microbiológicas, realizar una limpieza peritoneal y prevenir la recidiva. El tratamiento clínico se ocupa de las consecuencias de la infección mediante la reanimación perioperatoria y el tratamiento antibiótico1. A pesar de los avances en diagnóstico, procedimientos quirúrgicos, terapia antimicrobiana y cuidados intensivos, la mortalidad asociada con la peritonitis secundaria grave es aún muy alta. El pronóstico y el manejo oportuno representan la clave para mejorar la sobrevida y reducir la mortalidad asociada a infecciones intraabdominales extensas2. Es importante establecer lineamientos en cuanto al diagnóstico, manejo antibiótico y pautas de tratamiento quirúrgico para disminuir la morbilidad y mortalidad asociada a esta enfermedad. Palabras clave: Peritonitis; Peritoneo; Cavidad Abdominal/cirugía; Cavidad Peritoneal; Líquido Ascítico/patología; Procedimientos Quirúrgicos Operativos.

Peritonitis is an acute or chronic inflammation of the peritoneum that generally has an infectious origin. There are several types, with secondary peritonitis being the most frequent. The term secondary peritonitis is defined as localized or generalized inflammation of the peritoneal membrane caused by polymicrobial infection following traumatic or spontaneous rupture of a viscus or secondary to dehiscence of intestinal anastomoses. This entity is characterized by the presence of pus in the peritoneal cavity or fluid which, on direct microscopic examination, contains leukocytes and bacteria. The treatment of this pathology constitutes an emergency and can be clinical and/or surgical. The aim of operative management is based on identifying and eliminating the cause of the infection, collecting microbiological samples, performing peritoneal cleansing and preventing recurrence. Clinical management deals with the consequences of the infection by perioperative resuscitation and antibiotic treatment1 . Despite advances in diagnosis, surgical procedures, antimicrobial therapy and intensive care, mortality associated with severe secondary peritonitis is still very high. Prognosis and timely management represent the key to improving survival and reducing mortality associated with extensive intra-abdominal infections2. It is important to establish guidelines for diagnosis, antibiotic management and surgical treatment guidelines to reduce the morbidity and mortality associated with this disease.

Does ascitic fluid filtration improve the microbiological diagnosis of spontaneous bacterial peritonitis? An experimental laboratory study / A filtração do líquido ascítico melhora o diagnóstico microbiológico da peritonite bacteriana espontânea? Um estudo experimental laboratoria

ABSTRAC: Background: Spontaneous Bacterial Peritonitis (SBP) is a serious and frequent complication among cirrhotic patients with ascites and can be diagnosed by cytological analysis of the ascitic fluid. The microbiological culture of ascitic fluid, however, is positive in less than 40% of SBP cases, which often results in inappropriate antimicrobial therapy. Empirical therapy may be suboptimal, increasing patient's risk of aggravation, or overestimated, unnecessarily boosting bacterial resistance. Objective: This experimental laboratory study aimed to standardize and verify the technical feasibility of ascitic fluid vacuum filtration, as a way to optimize the etiological diagnosis of SBP, compared to the automated method. Method: The method evaluated and standardized in this study was ascitic fluid vacuum filtration. Its principle is the concentration of bacteria on a filter membrane. Results: This study included 36 cirrhotic patients treated at a public university hospital between 11.13.2017 and 06.30.2019. Among them, 47.2% (17/36) presented cytology test results compatible with SBP. For these patients, culture sensitivity using the automated method was 35.3% (6/17), against 11.8% (2/17) with the vacuum filtration method. Conclusion: In conclusion, vacuum filtration does not improve the microbiological diagnosis of SBP in this population compared to the automated method. (AU)

RESUMO:Contexto: A Peritonite Bacteriana Espontânea (PBE) é uma complicação grave e frequente entre pacientes cirróticos com ascite, diagnosticada por meio da análise citológica do líquido ascítico. A cultura microbiológica do líquido ascítico, por sua vez, é positiva em menos de 40% dos casos de PBE, o que resulta frequentemente na instituição de terapia antimicrobiana inapropriada. A terapia empírica pode ser subótima, aumentando o risco de agravamento do paciente, ou superestimada, impulsionando desnecessariamente a resistência bacteriana. Objetivo: Estudo experimental laboratorial, propôs padronizar e verificar a viabilidade técnica da filtração a vácuo do líquido ascítico, como forma de otimizar o diagnóstico etiológico na PBE, comparativamente ao sistema automatizado de culturas de sangue. Método: O método avaliado e padronizado neste estudo foi a da filtragem a vácuo do líquido ascítico. Esse tem como princípio a concentração da bactéria em uma membrana filtrante. Resultados: Nesse estudo, foram incluídos 36 pacientes cirróticos atendidos em um hospital público universitário, entre 13.11.2017 e 30.06.2019. Entre eles, 47,2% (17/36) apresentaram citologia compatível com PBE. Nesses, a sensibilidade da cultura pelo método semi-automatizado foi de 35,3% (6/17) e da cultura pelo método da filtragem a vácuo foi de 11,8% (2/17). Conclusão: Em conclusão, a filtragem a vácuo não melhora o diagnóstico microbiológico da PBE em relação ao método automatizado. (AU)

How a discerning cytological examination can aid in the diagnosis of infectious diseases: case reports

Infections caused by uncommon and resistant pathogens in unusual sites have been increasingly reported in medical literature. We describe four cases of rare cytological findings and clinical impact for patients. In the first case, Aspergillus sp and Pneumocystis jirovecii were observed in the bronchoalveolar lavage of a patient with severe systemic lupus. In the second and third cases, we describe the presence of Trichomonas sp and Strongyloides sp larvae in samples of pleural and peritoneal fluid, respectively. The fourth report is about a patient with a wrist subcutaneous nodule whose synovial aspiration and cytology revealed the presence of brown septate hyphae. The early identification of the infectious agent in the cytological examination was essential for the introduction and/or re-adaptation of therapy in the four cases described. Patients in this report were immunocompromised with severe comorbidities, conditions often associated with unfavorable clinical outcomes.

Recurrent abdominal pain, peritoneal effusion, and eosinophilia in a boy aged 17 years / 中国当代儿科杂志

A boy, aged 17 years, was admitted again due to abdominal pain, diarrhea, and eosinophilia for 3 years, which worsened for 3 days. Three years ago, the boy suffered from abdominal pain and diarrhea after eating yogurt; color Doppler ultrasound showed a large amount of peritoneal effusion, and routine blood test, bone marrow cell morphology, and ascites histological examination showed a large number of eosinophils. Three days ago, he was admitted again due to abdominal pain and diarrhea. The gastrointestinal endoscopy showed eosinophil infiltration in the angle of stomach. The boy was diagnosed with eosinophilic gastrointestinal disease (eosinophilic gastroenteritis). He was improved after the treatment with glucocorticoids and dietary avoidance, and no recurrence was observed during the one-year follow-up. It is concluded that for children who attend the hospital due to gastrointestinal symptoms such as abdominal pain and diarrhea, if there is an increase in peripheral blood eosinophils, it is necessary to consider the possibility of eosinophilic gastrointestinal disease, and eosinophil infiltration and abnormal eosinophil count in gastrointestinal tissue based on endoscopic biopsy may be the key to diagnosis.

Hallazgos microbiológicos y susceptibilidad antimicrobiana en cirugía abdominal de urgencia / Microbiological findings and antimicrobial susceptibility in emergency abdominal surgery

Resumen Introducción: Es importante mantener programas de vigilancia bacteriana para disminuir resistencia y definir esquemas farmacológicos adecuados. Los pacientes con abdomen agudo representan un grupo microbiológico especial. Objetivos: Hacer una revisión de agentes patógenos en pacientes adultos operados en nuestro Servicio de Urgencia por patología abdominal con líquido libre y analizar los resultados obtenidos de cultivos respecto a las cepas y la susceptibilidad a los antibióticos. Materiales y Método: Estudio de cohorte prospectiva con estadística descriptiva. Se incluyen pacientes consecutivos, mayores de 18 años, operados por abdomen agudo que presentan líquido libre intraperitoneal entre noviembre de 2017 y abril de 2018. Se excluyen casos con terapia antimicrobiana, hospitalización y/o cirugía en los 3 meses previos. Se registran los cultivos positivos, cepas aisladas, susceptibilidad antimicrobiana, datos demográficos y evolución clínica. Resultados: De 63 pacientes 55% fueron hombres, edad promedio 52,2 años. Las patologías más frecuentes fueron de origen apendicular (62%) y de causa entérica (30%). En un 44% el cultivo fue positivo y en 36% con más de un germen. Escherichia coli fue el patógeno más frecuente (64,2%) seguidos de Enterococcus faecium y Streptococcus anginosus (7,1%). De los otros patógenos cultivados sólo se observó resistencia múltiple en un caso aislado de Morganella Morganii. Conclusiones: Estos datos constituyen la realidad microbiológica local en abdomen agudo. La Escherichia Coli sigue siendo el germen más frecuente, debe enfrentarse con profilaxis y tratamiento antibiótico adecuado. Es necesario mantener vigilancia microbiología local para un manejo acorde.

Introduction: It is important to maintain bacterial surveillance programs to decrease resistance and define adequate pharmacological schemes. Patients with abdomen represent a special microbiological group. Objetives: Make a review of pathogens in adult patients operated in our Emergency Service for abdominal pathology with free fluid and analyze the results obtained from cultures with respect to the strains and susceptibility to antibiotics. Materials and Method: Prospective cohort study with descriptive statistics. We include consecutive patients, older than 18 years old, operated on by abdomen who present free intraperitoneal fluid between November 2017 and April 2018. Cases with antimicrobial therapy, hospitalization and/or surgery 3 months prior are excluded. Positive cultures, isolated strains, antimicrobial susceptibility, demographic data and clinical evolution are recorded. Results: Of 63 patients, 55% were men and the average age was 52.2 years. The most frequent pathologies were of appendicular origin (62%) and of enteric origin (30%). In 44% the crop was positive and in 36% with more than one germ. Escherichia coli was the most frequent pathogen (64.2%) followed by Enterococcus faecium and Streptococcus anginosus (7.1%). Of the others, cultivated pathogens have only observed multiple resistance in an isolated case of Morganella Morganii. Conclusions: These data include the local microbiological reality in acute abdomen. Escherichia coli is still the most frequent germ that must be faced with the profile and the appropriate treatment. It is necessary to maintain local microbiology surveillance for a proper management.

Peritoneal fluid collection in healthy cattle and evaluation of changes in cell morphology during storage in refrigerated and non-refrigerated samples / Colheita do fluido peritoneal de bovinos sadios e verificação das alterações na morfologia celular quando mantido refrigerado ou à temperatura ambiente

This study aimed to evaluate the appropriate sites of abdominocentesis for peritoneal fluid collection in cattle and to investigate the time of cell viability in vitro, comparing three methods of sample conservation. Twenty-one healthy cattle (19 females and 2 males) were subjected to a laparocentesis procedure to obtain peritoneal fluid, with punctures in three defined sites: left cranial, right cranial, and right caudal. The total peritoneal fluid collected was divided into three aliquots and maintained under three preservation conditions: room temperature (26°C), refrigeration (4°C), and room temperature (26°C) with the addition of 1µL of 10% formaldehyde per 1mL of peritoneal fluid. The peritoneal fluid analysis performed immediately after collection consisted of: physical examination (color, appearance, volume, and specific gravity), biochemical measures (pH, total protein, fibrinogen, creatinine, and glucose), and cellularity (total and differential counts). The determination of proteins and the examination of cells were repeated in each separate aliquot at two, four, six, and eight hours after harvest. Data were analyzed through repeated measures ANOVA or Friedman test. The harvest was productive in 67% of cattle. The left cranial and the right cranial puncture sites were the most appropriate. Peritoneal fluid analyzed after collection, the total protein concentration ranged from 1.4 to 3.6g/dL, and number of leukocytes ranged from 54 to 1,322 cells/µL; 60 to 95% of leukocytes were lymphocytes. The protein concentration decreased, but the absolute values of leukocytes, lymphocytes, and segmented neutrophils did not change up to eight hours after collection, independent of the maintenance method. Cell lysis was delayed by cooling, and the addition of formaldehyde did not help preserve the integrity of cellular morphology. Laparocentesis is a safe and secure procedure in cattle and maybe more productive when performed in specific sites on the left or right sides of the cranial abdominal wall. Peritoneal fluid samples may be analyzed with reliable results for up to eight hours after collection when kept refrigerated and for up to six hours when kept at room temperature.(AU)

O estudo teve como objetivo avaliar os locais adequados de laparocentese para a colheita de fluido peritoneal de bovinos e estabelecer o tempo de viabilidade celular in vitro, comparando três métodos de conservação. Vinte e um bovinos hígidos (19 fêmeas e 2 machos) foram submetidos ao procedimento de laparocentese para obtenção de fluido peritoneal, com punção em três pontos definidos: cranial esquerdo, cranial direito e caudal direito. O volume total do líquido peritoneal foi dividido em três alíquotas mantidas sob três métodos de conservação: temperatura ambiente (26°C); refrigeração (4°C); e temperatura ambiente (26°C) com adição de 1µL de formol 10% para cada 1mL de líquido peritonial. A análise do líquido peritoneal realizada imediatamente após sua obtenção consistiu em: exames físico (cor, aspecto, volume e densidade); bioquímicos (pH, proteína total, fibrinogênio, creatinina e glicose); e da celularidade (contagens total e diferencial). A determinação de proteínas e o exame da celularidade foram repetidos, em cada alíquota separada, as duas, quatro, seis e oito horas após a colheita. Análise de variâncias de medidas repetidas ou teste de Friedman foram empregados para avaliação ao longo do tempo. A colheita foi produtiva em 67% dos bovinos e os locais de punção craniais esquerdo e direito foram os mais adequados. A concentração de proteína total variou de 1,4 a 3,6g/dL e o número de leucócitos de 54 a 1.322 células/µL, com predomínio de linfócitos (60 a 95% das células) no fluido peritoneal analisado logo após a colheita. A concentração de proteínas diminuiu, mas os valores absolutos de leucócitos, de linfócitos e de neutrófilos segmentados não se modificaram até oito horas após a colheita, independente do método de manutenção das amostras. A lise celular foi retardada pela refrigeração e a adição de formol não contribuiu para preservar a integridade da morfologia celular. A laparocentese é um procedimento seguro e de execução fácil em bovinos sendo mais produtiva quando realizada em locais específicos à esquerda ou à direita craniais da parede abdominal. Amostras de fluido peritoneal podem ser analisadas com resultados confiáveis quando mantidas refrigeradas por até oito horas após a colheita e quando mantidas à temperatura ambiente por até seis horas.(AU)

Strongyloides stercoralis como causa infrecuente de infección de líquido ascítico en cirrosis / Strongyloides stercoralis as uncommon cause of ascitic fluid infection in cirrhosis

Resumen Se comunica el caso clínico de un varón, con antecedentes de una cirrosis hepática alcohólica y gota, usuario crónico de antiinflamatorios, incluyendo corticoesteroides. Consultó por una melena secundaria a una úlcera bulbar. Durante su internación presentó fiebre, tratándose con ceftriaxona por un probable foco urinario. Por persistir febril, se realizó una paracentesis diagnóstica. En la muestra de líquido ascítico se observaron larvas de Strongyloides stercoralis. Recibió tratamiento antiparasitario con ivermectina, con buena respuesta clínica. Aunque la infección por S. stercoralis es relativamente frecuente en pacientes con cirrosis hepática alcohólica, la ascitis infectada por Strongyloides corresponde a una forma de presentación infrecuente. Este caso muestra la importancia de la paracentesis diagnóstica en todo paciente con ascitis secundaria a una cirrosis. Es importante considerar la presentación atípica de la infestación por Strongyloides en el contexto del paciente inmunocomprometido, ya que sin tratamiento puede tener una alta mortalidad.

Abstract Male patient, with a history of alcoholic cirrhosis frequent user of anti-inflammatory drugs including corticosteroids. He consulted for digestive bleeding secondary to a bulbar ulcer. During the admission, he had fever and antibiotic treatment with ceftriaxone is started, for a urinary infection. Fever persisted for 48 hours, so a diagnostic paracentesis was made: Strongyloides stercoralis larvae were seen in the direct microscopic exam. The patient started antiparasitic treatment with ivermectin. He was discharged and did not returned for follow up. Although infection with S. stercoralis is relatively common in patients with alcoholic liver cirrhosis, ascites infected with Strongyloides corresponds to an infrequent form of presentation. This case shows the importance of diagnostic paracentesis in every cirrhotic patient. It is important to consider atypical presentation of Strongyloides infection in the immunocompromised host, considering it could be fatal without treatment.

Regulatory T cells isolated from endometriotic peritoneal fluid express a different number of Toll-like receptors / Células T reguladoras isoladas do fluido peritoneal de mulheres com endometriose expressam um número diferente de receptores do tipo Toll

ABSTRACT Objective To analyze and compare the expression of Toll-like receptors by regulatory T cells present in the peritoneal fluid of patients with and without endometriosis. Methods Regulatory T cells were isolated from peritoneal fluid of women with and without endometriosis, collected during surgery, and mRNA was extracted for analysis of Toll-like receptors expression by reverse-transcriptase polymerase chain reaction. Results Patients with endometriosis presented regulatory T cells expressing a larger number and variety of Toll-like receptors when compared to regulatory T cells from patients in the Control Group. Toll-like receptor-1 and Toll-like receptor-2 in regulatory T cells were expressed in both groups. All other expressed Toll-like receptors types were only found in regulatory T cells from the Endometriosis Group. Conclusion Patients with endometriosis had peritoneal regulatory T cells expressing various Toll-like receptors types.

RESUMO Objetivo Analisar e comparar a expressão de receptores do tipo Toll por células T reguladoras presentes no líquido peritoneal de pacientes com endometriose. Métodos Células T reguladoras foram isoladas do líquido peritoneal de mulheres com e sem endometriose, coletadas durante a cirurgia, e o RNAm foi extraído para análise da expressão de receptores do tipo Toll por reação em cadeia da polimerase com transcriptase reversa. Resultados Pacientes com endometriose apresentaram células T reguladoras expressando maior número e variedade de Toll por células quando comparadas com T reguladoras de pacientes do Grupo Controle. Receptores do tipo Toll-1 e receptores do tipo Toll-2 foram expressos em ambos os grupos. Todos os outros tipos de receptores Toll foram encontrados expressos apenas em células T reguladoras do grupo com endometriose. Conclusão Pacientes com endometriose apresentaram células T reguladoras peritoneais expressando vários tipos de receptores tipo Toll.

Functional and genomic characterization of three novel cell lines derived from a metastatic gallbladder cancer tumor

BACKGROUND: Gallbladder cancer (GBC) is the most common tumor of the biliary tract. The incidence of GBC shows a large geographic variability, being particularly frequent in Native American populations. In Chile, GBC represents the second cause of cancer-related death among women. We describe here the establishment of three novel cell lines derived from the ascitic fluid of a Chilean GBC patient, who presented 46% European, 36% Mapuche, 12% Aymara and 6% African ancestry. RESULTS: After immunocytochemical staining of the primary cell culture, we isolated and comprehensively characterized three independent clones (PUC-GBC1, PUC-GBC2 and PUC-GBC3) by short tandem repeat DNA profiling and RNA sequencing as well as karyotype, doubling time, chemosensitivity, in vitro migration capability and in vivo tumorigenicity assay. Primary culture cells showed high expression of CK7, CK19, CA 19-9, MUC1 and MUC16, and negative expression of mesothelial markers. The three isolated clones displayed an epithelial phenotype and an abnormal structure and number of chromosomes. RNA sequencing confirmed the increased expression of cytokeratin and mucin genes, and also of TP53 and ERBB2 with some differences among the three cells lines, and revealed a novel exonic mutation in NF1. The PUC-GBC3 clone was the most aggressive according to histopathological features and the tumorigenic capacity in NSG mice. CONCLUSIONS: The first cell lines established from a Chilean GBC patient represent a new model for studying GBC in patients of Native American descent.

Human B1 Cells are the Main Blood Group A-Specific B Cells That Have a Moderate Correlation With Anti-A Antibody Titer

BACKGROUND: Anti-carbohydrate antibody responses, including those of anti-blood group ABO antibodies, are yet to be thoroughly studied in humans. Because anti-ABO antibody-mediated rejection is a key hurdle in ABO-incompatible transplantation, it is important to understand the cellular mechanism of anti-ABO responses. We aimed to identify the main human B cell subsets that produce anti-ABO antibodies by analyzing the correlation between B cell subsets and anti-ABO antibody titers. METHODS: Blood group A-binding B cells were analyzed in peritoneal fluid and peripheral blood samples from 43 patients undergoing peritoneal dialysis and 18 healthy volunteers with blood group B or O. The correlation between each blood group A-specific B cell subset and anti-A antibody titer was then analyzed using Pearson's correlation analysis. RESULTS: Blood group A-binding B cells were enriched in CD27⁺CD43⁺CD1c− B1, CD5⁺ B1, CD11b⁺ B1, and CD27⁺CD43⁺CD1c+ marginal zone-B1 cells in peripheral blood. Blood group A-specific B1 cells (P=0.029 and R=0.356 for IgM; P=0.049 and R=0.325 for IgG) and marginal zone-B1 cells (P=0.011 and R=0.410 for IgM) were positively correlated with anti-A antibody titer. Further analysis of peritoneal B cells confirmed B1 cell enrichment in the peritoneal cavity but showed no difference in blood group A-specific B1 cell enrichment between the peritoneal cavity and peripheral blood. CONCLUSIONS: Human B1 cells are the key blood group A-specific B cells that have a moderate correlation with anti-A antibody titer and therefore constitute a potential therapeutic target for successful ABO-incompatible transplantation.

Recuperación de bacterias aerobias y anaerobias de pacientes con apendicitis aguda mediante botellas de hemocultivo / Recovery of aerobic and anaerobic bacteria from patients with acute appendicitis using blood culture bottles

Introducción. La apendicitis aguda es la primera causa de abdomen agudo; sin embargo, poco se conoce sobre las bacterias asociadas y su perfil de sensibilidad. Objetivo. Identificar y determinar el patrón de resistencia de las bacterias aerobias y anaerobias aisladas en cultivo de líquido periapendicular tomado de los pacientes con apendicitis aguda, y establecer la proporción de bacterias según la fase clínica. Materiales y métodos. Se llevó a cabo un estudio descriptivo y prospectivo en el Hospital Universitario de San José de Bogotá (Colombia), en pacientes mayores de 16 años sometidos a apendicectomía abierta. Se tomaron muestras de líquido periapendicular, las cuales se sembraron directamente en botellas de hemocultivos para aerobios y anaerobios. Resultados. Se incluyeron 154 pacientes. Del total de cultivos, el 87 % (n=134) fueron positivos: 77 % (n=118) para aerobios y 51 % (n=79) para anaerobios. La proporción de cultivos positivos fue inferior en los casos de apendicitis no complicada, en comparación con aquellos de apendicitis complicada (80 % (66/83) Vs. 95 % (67/71); p=0,003). Los microorganismos aislados con mayor frecuencia fueron: Escherichia coli (53 %) (n=84), Bacteroides sp. (25 %) (n=25), Propionibacterium acnes (21 %) (n=21), Staphylococci coagulasa negativo (17 %) (n=27), Enterococcus sp. (10 %) (n=15) y Fusobacterium sp. (11 %) (n=11). La sensibilidad de E. coli a la amplicilina sulbactam fue de 30 %. La sensibilidad de Bacteroides spp. a la clindamicina y la ampicilina sulbactam fue de 91 %. El 100 % de los anaerobios fueron sensibles a piperacilina tazobactam, ertapenem, meropenem y metronidazol. Conclusiones. Los cultivos intraoperatorios son pertinentes en la apendicitis para determinar el patrón epidemiológico local, y establecer los antibióticos profilácticos y terapéuticos para esta enfermedad. Su siembra directa en botellas de hemocultivo permite una gran recuperación de microorganismos.

Introduction: Acute appendicitis is the first cause of acute abdomen, however, there is a little information about the associated bacteria and its sensibility profile. Objetive: To identify and to determine the resistance pattern of aerobic and anaerobic bacteria isolated in periapendicular fluid cultures taken in patients with acute appendicitis and to establish the proportions of isolates according to the clinical phase. Materials and methods: A descriptive and prospective study was undertaken at the Hospital Universitario de San José (Bogotá, Colombia) of patients older than sixteen years of age, undergoing an open appendectomy. A sample of periappendiceal fluid was taken, which was deposited directly into aerobic and anaerobic blood culture bottles. Results: One hundred and fifty-four patients were included. The overall positivity of cultures was 87% (n=1344); 77% (n=118) for aerobes and 51% (n=79) for anaerobes. The proportion of positive cultures was lower in the uncomplicated appendicitis cases as compared to the complicated ones (80% (66/83) vs. 95%(67/71), p = 0.003). The microorganisms isolated most frequently were: Escherichia coli (53%) (n=84); Bacteroides spp. (25%) (n=25); Propionibacterium acnes (21%) (n=21); coagulase negative Staphylococci (17%) (n=27); Enterococcus spp. (11%) (n=15), and Fusobacterium spp. (11%) (n=11). The sensitivity of E.coli to ampicillin/sulbactam was 30%. The sensitivity of Bacteroides spp. to clindamycin and ampicillin/sulbactam was 91%. All anaerobe isolates were sensitive to piperacillin/tazobactam, ertapenem, meropenem and metronidazole. Conclusions: Intraoperative cultures in acute appendicits are relevant in order to determine the local epidemiological pattern and to establish prophylactic and therapeutic antibiotics for this pathology; direct inoculation in blood culture bottles allows a high recovery of microorganisms.

Canine cavitary effusion: a retrospective study of 304 cases in Brazil / Efusões cavitárias caninas: estudo retrospectivo de 304 casos no Brasil

The objective of this study was to determine the frequency of different categories of specific and general classification in canine cavitary effusions (CE), as well as their association with the underlying etiologies. The laboratorial and clinical data from 304 cases of canine CE were retrospectively assessed. In 32.9% (100 cases), at least one of the specific classification categories was established, with a subtotal predominance of neoplasia (42%), bacterial serositis (24%) and hemorrhage (16%). Neoplasia was confirmed by effusion cytology in 57.5% of the cases with histopathological confirmation. From the cases in which the specific classification was not obtained, 35.8% were classified as modified transudate, 30.4% as pure transudate, 21.1% % as exudate and 12.7% was not included in any general category. The most common causes of effusion among these cases were hypoproteinemia and/or hipoalbuminemia (HPHA) (25.8%), hepatopathy (22.5%), cardiac insufficiency (15.5%) and cytologically undetected cases of neoplasia (12.4%). In conclusion, HPHA, hepatopathy and neoplasia represents important etiologies for canine CE development. Classification of effusions, solely based on [TP] and TNCC, might be an inaccurate diagnostic tool of effusions. New laboratorial classification methods for canine CE should be researched.(AU)

O objetivo deste estudo foi determinar a frequência de diferentes categorias de classificação específica e geral em efusões cavitárias (EC) caninas, bem como sua associação com as etiologias subjacentes. Os dados laboratoriais e clínicos de 304 casos de EC canina foram avaliados retrospectivamente. Em 32,9% (100 casos), pelo menos uma das categorias específicas de classificação foi estabelecida, com predomínio subtotal de neoplasia (42%), serosite bacteriana (24%) e hemorragia (16%). A neoplasia foi confirmada pela citologia da efusão em 57,5% dos casos com confirmação histopatológica. Dos casos em que a classificação específica não foi obtida (204 casos), 35,8% foram classificados como transudato modificado, 30,4% como transudato puro, 21,1% como exsudato e 12,7% não foram incluídos em nenhuma categoria geral. As causas mais comuns de efusão nestes casos foram hipoproteinemia e/ou hipoalbuminemia (HPHA) (25,8%), hepatopatia (22,5%), insuficiência cardíaca (15,5%) e casos de neoplasia citologicamente não detectados (12,4%). Em conclusão, HPHA, hepatopatia e neoplasia representam importantes etiologias para o desenvolvimento da EC canina. A classificação geral de efusões, baseada exclusivamente em proteína e celularidade, pode ser uma ferramenta diagnóstica imprecisa. Novos métodos de classificação laboratorial para ECs caninas devem ser pesquisados.(AU)

Serum and ascitic fluid high sensitive C reactive protein as prognostic marker in patients with spontaneous bacterial peritonitis

Background: Spontaneous Bacterial Peritonitis (SBP) is the most frequent bacterial infection in cirrhotic patients with ascites. The mortality rate in those patients ranges from 40-70%.Aim: to assess level of serum and ascetic fluid polymorph nuclear leucocytes (PMN), high sensitive C reactive protein (hs-CRP) in patients with SBP before and after treatment. Methods: A cohort study was done on 114 patients SBP admitted in the Internal Medicine, Faculty of Medicine, Zagazig University during the period from December 2017 to September 2018. All patients were subjected to full history taking, thorough clinical examination, routine laboratory investigation, ultrasonography and ascitic fluid sampling. They was followed up for 5 days from starting treatment by parenteral third generation cephalosporin and peripheral blood (PMN), serum (hs-CRP), ascitic fluid PMN and hs-CRP were measured again.Results: the largest percentage of the patients were male, had posthepatitic C cirrhosis and child C score. There was statistically non-significant difference between antibiotic responders and non-responders regarding peripheral blood PMN before or five days after antibiotic use. There was statistically non-significant difference in ascitic fluid PMN, serum and ascitic fluid hs-CRP before treatment while the difference is significant between both groups regarding them five days after treatment. Percent change in serum hs-CRP was equal to that of ascitic fluid PMN. Percent change in ascitic fluid hs-CRP was comparable to that of ascitic fluid PMN. Conclusion: Serum and ascitic fluid hs-CRP level can be considered as alternative prognostic markers in cirrhotic patients with SBP

Contribution de la cytologie au diagnostic et à l'évaluation du pronostic des ascites métastatiques au Mali

Introduction : Les ascites métastatiques cancéreuses sont caractérisées par la présence de cellules cancéreuses métastatiques dans le liquide péritonéal. Elles sont fréquentes à un stade avancé des cancers. Il s'agissait de déterminer la contribution de la cytologie au diagnostic et à l'évaluation du pronostic des ascites métastatiques dans le service d'Anatomie et Cytologie Pathologiques du CHU du Point G. Matériel et méthode : Notre étude s'est étendue de Janvier 2013 à Décembre 2015; soit une période de 3 ans. Elle était rétrospective et prospective incluant tous les patients dont l'étude cytologique des liquides d'ascitea mis en évidence des cellules malignes. Le dossier médical des patients a été exploité pour la recherche du site primitif et du diagnostic histologique éventuel et le suivi. Résultats : Sur 213 examens cytologiques de liquide d'ascite; 61 étaient malins, soit un taux de 28,64%. La tranche d'âge la plus répresentée était de 46 à 60 ans avec un âge moyen de 53,7 ± 14,7 ans. Le sexe féminin était dominant avec un taux de 66%. La profession la plus fréquente était les ménagères soit un taux de 50,82%. Le siège primitif le plus fréquent était l'ovaire (26%). Il était suivi par le foie et l'estomac avec respectivement 20% et 18%. L'ascite a été le signe révélateur du cancer dans 36% des cas. Elle était isolée dans 78%. Après 6 mois de suivi, le taux de mortalité était 75,6%. Conclusion : L'examen cytologique constitue un examen paraclinique dans le diagnoticdes ascites métastatiques cancéreuses

Peritoneal Fluid Cytology of Disseminated Large Cell Neuroendocrine Carcinoma Combined with Endometrioid Adenocarcinoma of the Endometrium

No abstract available.

Ultrasonographic assessment of experimentally induced gastric perforation in beagle dogs / 대한수의학회지

The goals of this study were, first, to evaluate the feasibility of inducing gastric perforation with 99% alcohol injection after electrocautery (EA-method), and, second, to observe “enhanced peritoneal stripe sign (EPSS)” and other lesions upon induction of gastric perforation. Six clinically normal beagle dogs were prepared for gastric perforation using endoscopy. After gastric perforation, EPSS and other lesions on ultrasonography were observed eventually (at 0 h, 3 h, day 1, day 2, day 3, day 4, day 5, and day 6). We graded the EPSS depending on its width and number. EPSS was observed until day 4 of the examination in all the 6 dogs. The grades of EPSS were the highest at 3 h and declined gradually. Peritoneal effusion was observed in all dogs at 3 h and on day 1. Regional bright mesenteric fat was confirmed in all dogs on days 3 and 4. In conclusion, gastric perforation can be induced by EA-method. EPSS and peritoneal effusion appear at a very early stage, and regional bright mesenteric fat was identified on days 3 and 4 in almost all dogs with gastric perforation.

Adjuvant therapy of moxibustion combined with formula for peritoneal effusion of ovarian malignant tumors / 中国针灸

OBJECTIVE@#To observe the clinical efficacy of adjuvant therapy of moxibustion combined with formula for peritoneal effusion of ovarian malignant tumors.@*METHODS@#Sixty patients with peritoneal effusion of ovarian malignant tumors were randomly divided into an observation group and a control group, 30 cases in each group. The patients in the control group were treated with intravenous infusion of paclitaxel liposome at the first day and cisplatin at the 2nd to 4th day, 21 days as a course of treatment, and 4 courses were given. Based on the treatment of the control group, the patients in the observation group were treated by moxibustion combined with formula. Moxibustion was applied at Mingmen (GV 4), Pishu (BL 20), Shenshu (BL 23), Shenque (CV 8), Guanyuan (CV 4), Zigong (EX-CA 1), Zhongwan (CV 12), Shuifen (CV 9), Qihai (CV 6) and Zhongji (CV 3), each acupoint for 30 min, once a day for 12 weeks. formula was taken twice orally, one dose a day, 2 weeks as a course of treatment, and 6 courses were given. The levels of , , and / in peripheral blood were measured before and after 12-week treatment in the two groups. The changes of peritoneal effusion volume and Karnofsky performance status scale (KPS) score before and after treatment were compared between the two groups, and the clinical efficacy of the two groups was evaluated.@*RESULTS@#The symptom improvement rate was 96.7% (29/30) and overall effective rate was 86.7% (26/30) in the observation group, which were significantly superior to those in the control group [80.0% (24/30) and 56.7% (17/30), 0.05), and the increase in the observation group was significantly higher than that in the control group (<0.05). After treatment, the volume of peritoneal effusion in the two groups was decreased (<0.01), and the reduced volume in the observation group was higher than that in the control group (<0.05). After treatment, KPS scores were increased significantly in both two groups (<0.01), and the increase in the observation group was higher than that in the control group (<0.05). The incidence rate of adverse reactions in the observation group was lower than that in the control group [23.3% (7/30) vs 53.3% (16/30), <0.05].@*CONCLUSION@#Moxibustion combined with formula could effectively improve the immune function, reduce the volume of peritoneal effusion, improve the symptom improvement rate, overall effective rate and the quality of life, and reduce the incidence of adverse reactions in chemotherapy of patients with peritoneal effusion of ovarian malignant tumors.

Primary Malignant Mesothelioma of the Peritoneum Mistaken for Peritoneal Tuberculosis due to Elevated Cancer Antigen 125 / 대한소화기학회지

A differential diagnosis of ascites is always challenging for physicians. Peritoneal tuberculosis is particularly difficult to distinguish from peritoneal carcinomatosis because of the similarities in clinical manifestations and laboratory results. Although the definitive diagnostic method for ascites is to take a biopsy of the involved tissues through laparoscopy or laparotomy, there are many limitations in performing biopsies in clinical practice. For this reason, physicians have attempted to find surrogate markers that can substitute for a biopsy as a confirmative diagnostic method for ascites. CA 125, which is known as a tumor marker for gynecological malignancies, has been reported to be a biochemical indicator for peritoneal tuberculosis. On the other hand, the sensitivity of serum CA 125 is low, and CA 125 may be elevated due to other benign or malignant conditions. This paper reports the case of a 66-year-old male who had a moderate amount of ascites and complained of dyspepsia and a febrile sensation. His abdominal CT scans revealed a conglomerated mass, diffuse omental infiltration, and peritoneal wall thickening. Initially, peritoneal tuberculosis was suspected due to the clinical symptoms, CT findings, and high serum CA 125 levels, but non-specific malignant cells were detected on cytology of the ascitic fluid. Finally, he was diagnosed with primary malignant peritoneal mesothelioma after undergoing a laparoscopic biopsy.