Asma em adolescentes: o que o estudo ERICA nos mostrou? / Asthma in adolescents: what did ERICA study show us?

A asma é uma doença heterogênea caracterizada pela história de sintomas respiratórios que variam de intensidade e ao longo do tempo. Devido à sua alta prevalência, constitui um problema mundial de saúde pública, atingindo todas as faixas etárias, em especial crianças e adolescentes. O objetivo deste artigo foi analisar as produções científicas sobre asma baseadas no Estudo de Riscos Cardiovasculares em Adolescentes (ERICA). Trata-se de uma revisão narrativa incluindo os artigos originais sobre asma baseados nos dados do ERICA, publicados em periódicos indexados em inglês e português. O ERICA foi um estudo multicêntrico nacional realizado em 2013 e 2014, que investigou a prevalência de asma e fatores de risco cardiovascular, incluindo obesidade, diabetes mellitus, hipertensão arterial sistêmica, dislipidemia, tabagismo, sedentarismo, hábitos alimentares inadequados, e a associação entre esses fatores, em adolescentes de 12 a 17 anos, estudantes de escolas públicas e privadas de municípios brasileiros com mais de 100.000 habitantes. Nos cinco estudos selecionados, foi possível demonstrar que a prevalência de asma foi significativamente maior entre adolescentes do sexo feminino em todas as capitais e macrorregiões do Brasil, com predomínio da doença na região Sudeste do nosso país. Além disso, a asma esteve fortemente associada ao tabagismo (passivo e ativo) e foi associada à duração curta do sono. Por outro lado, não esteve associada com os níveis séricos de vitamina D. Em relação aos parâmetros metabólicos, foi observado que a síndrome metabólica e alguns de seus componentes, como a circunferência abdominal, estiveram significativamente associados à asma grave em adolescentes brasileiros.

Asthma is a heterogeneous disease characterized by a history of respiratory symptoms that vary in intensity and over time. Due to its high prevalence, asthma is considered a global public health problem affecting all age groups, especially children and adolescents. This study aimed to analyze scientific papers on asthma based on the Study of Cardiovascular Risks in Adolescents (ERICA). We provide a narrative review of original articles on asthma based on ERICA data published in indexed journals in English and Portuguese. ERICA was a national multicenter study conducted in 2013 and 2014 that investigated the prevalence of asthma and cardiovascular risk factors, including obesity, diabetes mellitus, systemic arterial hypertension, dyslipidemia, smoking, sedentary lifestyle, and inadequate eating habits, and the association between these factors in adolescents aged 12 to 17 years, students from public and private schools in Brazilian cities of more than 100,000 population. In the 5 selected studies, the prevalence of asthma was significantly higher in female adolescents in all capitals and macro-regions of Brazil, occurring predominantly in the southeast region of the country. In addition, asthma was strongly associated with smoking (passive and active) as well as with short sleep duration, but not with serum vitamin D levels. Regarding metabolic parameters, metabolic syndrome and some of its components, such as waist circumference, were significantly associated with severe asthma in Brazilian adolescents.

Prevenção e controle da covid-19: estudo multicêntrico sobre a percepção e práticas no cotidiano das orientações médico-científicas pela população dos territórios de abrangência da Atenção Primária à Saúde / Prevention and control of covid-19: multicenter study on the perception and daily practices of medical-scientific guidelines by the population of territories covered by Primary Health Care

Quando pensamos no Estudo Multicêntrico, pensamos no científico e no popular (de povo, de tradição, de memória e experiência), em diálogo nos territórios da Atenção Básica em Saúde do país. Como prevenir e promover saúde em meio a uma doença que ocupou quase todos os espaços da vida social? A covid-19 estava nas conversas sérias da ciência, no jornal das televisões, nas mensagens de Whatsapp™, nas orientações dos profissionais da saúde, nas trocas de receitas caseiras, no debate político. Assim, iniciamos com a pergunta: como a população está "traduzindo" as orientações médico-científicas, como estão se prevenindo e, ao mesmo tempo, estão se informando sobre a pandemia? Foram convidados a fazer parte do estudo os alunos, docentes e coordenadores do Mestrado Profissional em Saúde da Família ­ PROFSAÚDE, sendo um projeto estruturante do Programa, que deu origem ao grupo de pesquisa do CNPq "Territórios, Modelagens e Práticas em Saúde da Família". O estudo envolveu 21 instituições da Rede, de todas as regiões do país, com a aplicação em 128 Unidades Básicas de Saúde, nos 88 municípios de atuação dos mestrandos no país. Assim, participaram mais de 200 alunos e, pelo menos, 100 docentes e orientadores, tendo sido entrevistadas 7.085 famílias. Foi um verdadeiro mutirão nacional, enriquecido com as nuances locais e regionais. Os resultados da pesquisa mostram que a dinâmica territorial que aproxima as ações de saúde à vida das pessoas foi fundamental no enfrentamento e na mitigação de impactos de emergências sanitárias como a pandemia da covid-19. O estudo multicêntrico desenvolvido pelo Programa reitera a grande capilaridade da Rede PROFSÁUDE no território nacional, na produção de conhecimento técnico e científico para o aprimoramento da Estratégia de Saúde da Família e confirma seu compromisso com a formação de profissionais de saúde e com o fortalecimento do Sistema Único de Saúde.

The correlation between No. 6 and No. 14v lymph node metastasis and the value of dissecting these lymph nodes in radical gastrectomy / 中华胃肠外科杂志

Radical gastrectomy with D2 lymphadenectomy has been widely performed as the standard surgery for patients with gastric cancer in major medical centers in China and abroad. However, the exact extent of lymph node dissection is still controversial. In the latest version of the Japanese Gastric Cancer Treatment Guidelines, No. 14v lymph nodes (along the root of the superior mesenteric vein) are again defined as loco-regional lymph nodes, and it is clarified that distal gastric cancer presenting with infra-pyloric regional lymph node (No.6) metastasis is recommended for D2+ superior mesenteric vein (No. 14v) lymph node dissection. To explore the relevance and clinical significance of No.6 and No.14v lymphadenectomy in radical gastric cancer surgery, a review of the national and international literature revealed that No.6 lymph node metastasis was associated with No.14v lymph node metastasis, that No.6 lymph node status was a valid predictor of No.14v lymph node negative status and false negative rate, and that for gastric cancer patients with No. 14v lymph node negative and No.6 lymph node positive, the dissection of No.14v lymph node may also have some significance. The addition of No. 14v lymph node dissection in radical gastrectomy is safe, but it is more important to distinguish the patients who can benefit from it. Professor Liang Han of Tianjin Medical University Cancer Hospital is currently leading a multicenter, large-sample, prospective clinical trial (NCT02272894) in China, which is expected to provide higher level evidence for the clinical significance of lymph node dissection in No.14v.

Meta-analysis of Simotang Oral Liquid in treatment of functional dyspepsia in adults / 中国中药杂志

This study was conducted to evaluate the efficacy and safety of Simotang Oral Liquid in the treatment of functional dyspepsia in adults. "Simotang Oral Liquid" "Simotang" "Si Mo Tang" "Si Mo Tang Oral Liquid" were used for retrieval of the relevant papers from CNKI, Wanfang, VIP, SinoMed, PubMed, Cochrane Library, Springer Link, and Web of Science from database inception to June 2021. Randomized controlled trial(RCT) of Simotang Oral Liquid in the treatment of functional dyspepsia in adults was screened out for Meta-analysis which was conducted in RevMan 5.3. A total of 16 RCTs were included. Meta-analysis showed that compared with the control group, Simotang Oral Liquid increased the total response rate and lowered the traditional Chinese medicine syndrome scores, serum cholecystokinin(CCK), serum nitric oxide(NO), and incidence of adverse reactions. However, the serum substance P(SP) had no statistical difference between the two groups. Simotang Oral Liquid is effective and safe in the treatment of functional dyspepsia in adults. However, this study has evidence and limitations, so the conclusions need to be further verified by large sample and multicenter clinical studies.

Systematic review and Meta-analysis of efficacy and safety of Tangmaikang Granules in treatment of diabetic peripheral neuropathy / 中国中药杂志

This study aimed to explore the efficacy and safety of Tangmaikang Granules in the treatment of diabetic peripheral neuropathy(DPN). PubMed, Cochrane Library, EMbase, SinoMed, CNKI, Wanfang and VIP were retrieved for randomized controlled trial(RCT) of Tangmaikang Granules in the treatment of DPN. Cochrane handbook 5.3 was used to evaluate the quality of the inclu-ded studies, and RevMan 5.4.1 and Stata 15.1 were employed to analyze data and test heterogeneity. GRADEpro was used to assess the quality of each outcome index. Clinical effective rate was the major outcome index, while the improvement in numbness of hands and feet, pain of extremities, sluggishness or regression of sensation, sensory conduction velocity(SCV) and motor conduction velocity(MCV) of median nerve and peroneal nerve, fasting blood glucose(FBG), 2 h postprandial blood glucose(2hPBG), and glycated hemoglobin(HbA1c) and incidence of adverse reactions were considered as the minor outcome indexes. A total of 19 RCTs with 1 602 patients were eventually included. The Meta-analysis showed that the improvements in clinical effective rate(RR=1.45, 95%CI[1.32, 1.61], P<0.000 01), pain of extremities(RR=1.70, 95%CI[1.27, 2.27], P=0.000 3), MCV of peroneal nerve(MD=4.08, 95%CI[3.29, 4.86], P<0.000 01) and HbA1c(SMD=-1.23, 95%CI[-1.80,-0.66], P<0.000 1) of Tangmaikang Granules alone or in combination in the experimental group were better than those in the control group. Compared with the conditions in the control group, numbness of hands and feet(RR=1.42, 95%CI[1.12, 1.80], P=0.003), sluggishness or regression of sensation(RR=1.41, 95%CI[1.05, 1.91], P=0.02), SCV of median nerve(MD=4.59, 95%CI[0.92, 8.27], P=0.01), SCV of peroneal nerve(MD=4.68, 95%CI[3.76, 5.60], P<0.000 01) and MCV of median nerve(MD=5.58, 95%CI[4.05, 7.11], P<0.000 01) of Tangmaikang Granules in combination in the experimental group were improved by subgroup analysis. The levels of FBG(MD=-0.57, 95%CI[-1.27, 0.12], P=0.11) and 2hPBG(MD=-0.69, 95%CI[-1.70, 0.33], P=0.18) in the experimental group were similar to those in the control group after treatment with Tangmaikang Granules alone or in combination. There was no difference in the safety(RR=1.28, 95%CI[0.58, 2.82], P=0.54) of Tangmaikang Granules in the treatment of DPN between the experimental group and the control group. Tangmaikang Granules could significantly increase clinical effective rate and nerve conduction velocity as well as improve symptoms of peripheral nerve and blood glucose level, and no serious adverse reactions were identified yet. Further validation was needed in future in large-sample, multicenter, high-quality RCTs.

Hyperglycemic memory in diabetic cardiomyopathy / 医学前沿

Cardiovascular diseases account for approximately 80% of deaths among individuals with diabetes mellitus, with diabetic cardiomyopathy as the major diabetic cardiovascular complication. Hyperglycemia is a symptom that abnormally activates multiple downstream pathways and contributes to cardiac hypertrophy, fibrosis, apoptosis, and other pathophysiological changes. Although glycemic control has long been at the center of diabetes therapy, multicenter randomized clinical studies have revealed that intensive glycemic control fails to reduce heart failure-associated hospitalization and mortality in patients with diabetes. This finding indicates that hyperglycemic stress persists in the cardiovascular system of patients with diabetes even if blood glucose level is tightly controlled to the normal level. This process is now referred to as hyperglycemic memory (HGM) phenomenon. We briefly reviewed herein the current advances that have been achieved in research on the underlying mechanisms of HGM in diabetic cardiomyopathy.

Meta-analysis on the effect of combining Lianhua Qingwen with Western medicine to treat coronavirus disease 2019 / 中西医结合学报

BACKGROUND@#Coronavirus disease 2019 (COVID-19) has become a worldwide life-threatening pandemic. Lianhua Qingwen is believed to possess the ability to treat or significantly improve the symptoms of COVID-19. These claims make it important to systematically evaluate the effects of using Lianhua Qingwen with Western medicine to treat COVID-19.@*OBJECTIVE@#To evaluate the safety and efficacy of combination therapy, employing Lianhua Qingwen with Western medicine, to treat COVID-19, using a meta-analysis approach.@*SEARCH STRATEGY@#China National Knowledge Infrastructure, Wanfang Database, VIP Database, PubMed, Embase, and Cochrane Library databases were searched for studies evaluating the effect of Lianhua Qingwen-Western medicine combination therapy in the treatment of COVID-19.@*INCLUSION CRITERIA@#(1) Research object: hospitalized patients meeting the diagnostic criteria of COVID-19 were included. (2) Intervention measures: patients in the treatment group received Lianhua Qingwen treatment combined with Western medicine, while the control group received either Western medicine or Chinese medicine treatment. (3) Research type: randomized controlled trials and retrospective study were included.@*DATA EXTRACTION AND ANALYSIS@#Two researchers extracted the first author, the proportion of males and females, age, body temperature, course of treatment, rate of disappearance of main symptoms, duration of fever, adverse reactions, and total effectiveness from the literature. Odds ratio (OR) and 95% confidence interval (CI) were used as the effect value for count data, and mean difference (MD) and 95% CI were used as the effect value for measurement data.@*RESULTS@#Six articles met the inclusion criteria, including a total of 856 COVID-19 patients. The meta-analysis showed that Lianhua Qingwen combination therapy achieved higher rates of fever reduction (OR = 3.43, 95% CI [1.78, 6.59], P = 0.0002), cough reduction (OR = 3.39, 95% CI [1.85, 6.23], P < 0.0001), recovery from shortness of breath (OR = 10.62, 95% CI [3.71, 30.40], P < 0.0001) and recovery from fatigue (OR = 2.82, 95% CI [1.44, 5.53], P = 0.003), higher total effectiveness rate (OR = 2.51, 95% CI [1.73, 3.64], P < 0.00001), and shorter time to recovery from fever (MD = -1.00, 95% CI [-1.04, 0.96], P < 0.00001), and did not increase the adverse reaction rate (OR = 0.65, 95% CI [0.42, 1.01], P = 0.06), compared to the single medication control.@*CONCLUSION@#The Lianhua Qingwen and Western medicine combination therapy is highly effective for COVID-19 patients and has good clinical safety. As only a small number of studies and patients were included in this review, more high-quality, multicenter, large-sample-size, randomized, double-blind, controlled trials are still needed for verification.

Evaluation of the clinical effect of an artificial intelligence-assisted diagnosis and treatment system for neonatal seizures in the real world: a multicenter clinical study protocol / 中国当代儿科杂志

Neonatal seizures are the most common clinical manifestations of critically ill neonates and often suggest serious diseases and complicated etiologies. The precise diagnosis of this disease can optimize the use of anti-seizure medication, reduce hospital costs, and improve the long-term neurodevelopmental outcomes. Currently, a few artificial intelligence-assisted diagnosis and treatment systems have been developed for neonatal seizures, but there is still a lack of high-level evidence for the diagnosis and treatment value in the real world. Based on an artificial intelligence-assisted diagnosis and treatment systems that has been developed for neonatal seizures, this study plans to recruit 370 neonates at a high risk of seizures from 6 neonatal intensive care units (NICUs) in China, in order to evaluate the effect of the system on the diagnosis, treatment, and prognosis of neonatal seizures in neonates with different gestational ages in the NICU. In this study, a diagnostic study protocol is used to evaluate the diagnostic value of the system, and a randomized parallel-controlled trial is designed to evaluate the effect of the system on the treatment and prognosis of neonates at a high risk of seizures. This multicenter prospective study will provide high-level evidence for the clinical application of artificial intelligence-assisted diagnosis and treatment systems for neonatal seizures in the real world.

Quality control in the implementation of multi-center acupuncture clinical trial / 中国针灸

The paper introduced the experiences of quality management in the implementation of multi-center acupuncture clinical trials and the keys in training acupuncture operators. The process management was explained in view of the division of labor for researchers, protocol learning and the communication among sub-centers. Besides, specificity links of acupuncture research were summarized, i.e. meaning implementation brief of acupuncture operation training, control for quantity of stimulus in acupuncture and doctor-patient communication. It is anticipated to provide a valuable reference for the quality control and improvement of multi-center acupuncture clinical trial in future.

Analysis of characteristics and trends of randomized controlled trials of gastric cancer between 2000 and 2019 / 中华外科杂志

Objectives: To analyze the current development status of gastric cancer (GC) randomized controlled trials (RCT) between 2000 and 2019, and to review the basic characteristics of published RCT. Methods: ClinicalTrials.gov was searched for phase 3 or 4 RCT conducted between January 2000 and December 2019 with the keyword "gastric cancer", and the development trend of different types of RCT during different time periods was described. Basic features of registered RCT such as intervention, study area, single-center or multicenter, sample size, and funding were presented. PubMed and Scopus databases were searched to judge the publication status of studies completed until June 2016. The adequacy of the report was estimated by the Consolidated Standards of Reporting Trials (CONSORT) checklist. Design flaws were evaluated by Cochrane tool and/or whether a systematic literature review was cited. The data was analyzed by χ2 test or Fisher exact test. Results: There were 262 RCT including in the present study. The number of GC-RCT registered on ClinicalTrials.gov had been on the rise from 1 case in 2000 to 30 cases in 2015. The proportion of RCT associated with targeted therapy or immunotherapy increased from 0 during 2000-2004 to 37.1% (36/97) during 2015-2019. The RCT registered in Asia was 191 cases, while that in non-Asia region was 71 cases. The proportion of multi-center RCT from non-Asia was higher than that from Asia (70.4% (50/71) vs. 50.3% (96/191), χ²=8.527, P=0.003). The proportion of RCT published was 59.1% (81/137). Among the published RCT, 65 (80.2%) studies were reported adequately, but 63 (77.8%) studies had avoidable design limitations. Conclusions: Targeted therapy and immunotherapy have become research hotspots in the treatment of GC. At present, there are inadequate multicenter RCT in Asia, and the publication rate of RCT is low. A considerable number of published RCT are reported inadequately and have avoidable design flaws.

JCOG lung cancer surgery trial series: review and interpretation / 中华肿瘤杂志

Surgery is so far the most effective treatment for early-stage non-small cell lung cancer (NSCLC). Since the 1990s, the pathology spectrum of early-stage lung cancer has gradually changed because of the increased detection of ground-glass opacity (GGO). The findings from preoperative thin-section computed tomography are strong predictors for the invasiveness and lymph node involvement of GGO, and limited surgery is believed to be implemented safely for radiological less invasive lesions, which calls into question the dominance of lobectomy. After the JCOG0201 trial establishing the radiologic criteria of pathological noninvasiveness for lung adenocarcinoma, the Japan Clinical Oncology Group (JCOG) and the West Japan Oncology Group (WJOG) have successively carried out a series of prospective imaging-guided trials to investigate the optimal surgical procedure for early-stage lung cancer. JCOG0804, was a single-arm, non-randomized, confirmatory trial to evaluate the efficacy and safety of sublobar resection (wedge resection and segmentectomy) for GGO dominant peripheral lung cancer. The primary end point was 5-year relapse-free survival. JCOG0802/WJOG4607L, was a multicentre, open-label, phase 3, randomized, controlled, non-inferiority trial to investigate if segmentectomy was non-inferior to lobectomy in patients with small-sized peripheral NSCLC. The primary endpoint was 5-year overall survival. JCOG1211 was also a non-randomized confirmatory trial to confirm the efficacy of a segmentectomy for clinical T1N0 lung cancer with dominant GGO. The primary endpoint was 5-year relapse-free survival. The findings of JCOG0804 and JCOG0802, and the primary analysis results of JCOG1211 have been officially published. This article systematically reviewed and interpreted the results of the JCOG lung cancer surgery trial series.

Colelitíase sintomática como apresentação de colangite esclerosante primária na infância - série de casos e revisão de literatura / Symptomatic cholelithiasis as the presentation of pediatric primary sclerosing cholangitis - case series and literature review

ABSTRACT BACKGROUND: Primary sclerosing cholangitis (PSC) is a rare hepatobiliary disorder, whose etiology remains not fully elucidated. Given how rare PSC is in childhood, until the recent publication of a multicenter international collaboration, even data on its characteristics and natural history were scarce. Symptomatic cholelithiasis has not been previously reported as the presentation of PSC. OBJECTIVE: The aim of this study was the diagnosis of PSC following the initial unusual presentation with symptomatic cholelithiasis, that followed an atypical clinical course that could not be explained by cholelithiasis alone. A literature review was also conducted. METHODS: We conducted a retrospective chart review of three patients, who were diagnosed and/or followed at the Clinics Hospital, University of Campinas - Sao Paulo/ Brazil, between 2014 and 2020. Data analyzed included gender, age of presentation, past medical history, imaging findings, laboratory results, endoscopic evaluation, response to medical therapy and follow-up. RESULTS: Age at time of presentation with cholelithiasis varied from 10 to 12 years. In two of the cases reported, a more subacute onset of symptoms preceded the episode of cholelithiasis. Two patients were managed with cholecystectomy, not followed by any surgical complications, one patient was managed conservatively. Percutaneous liver biopsy was performed in all three cases, showing histological findings compatible with PSC. Associated inflammatory bowel disease (IBD) was not seen in any of the patients. The patients have been followed for a mean time of 3.4 years. CONCLUSION: PSC and cholelithiasis are both rare in the pediatric population. This study reports on symptomatic cholelithiasis as a presentation of PSC and raises the importance of suspecting an underlying hepatobiliary disorder in children with cholelithiasis without any known predisposing factors and/or that follow an atypical clinical course for cholelithiasis alone.

RESUMO CONTEXTO: A colangite esclerosante primária (CEP) é uma doença hepatobiliar rara, cuja etiologia ainda não está totalmente elucidada. Dada a raridade do CEP na infância, até a recente publicação de uma colaboração multicêntrica internacional, mesmo dados sobre suas características e história natural eram escassos. A colelitíase sintomática não foi relatada anteriormente como a apresentação inicial de CEP na infância. OBJETIVO: O objetivo deste estudo foi o diagnóstico de CEP após a apresentação inicial incomum com colelitíase sintomática, que seguiu um curso clínico atípico que não poderia ser explicado apenas pela colelitíase. Também foi realizada uma revisão da literatura. MÉTODOS: Foi realizada uma revisão retrospectiva dos prontuários de três pacientes, que foram diagnosticados e/ou acompanhados no Hospital das Clínicas da Universidade Estadual de Campinas - São Paulo / Brasil, entre 2014 e 2020. Os dados analisados incluíram sexo, idade de apresentação, história médica pregressa, achados de imagem, resultados laboratoriais, avaliação endoscópica, resposta à terapia médica e acompanhamento. RESULTADOS: A idade no momento da apresentação da colelitíase variou de 10 a 12 anos. Em dois dos casos relatados, um início mais subagudo dos sintomas precedeu o episódio de colelitíase. Dois pacientes foram tratados com colecistectomia, não seguida de qualquer complicação cirúrgica, e um paciente foi tratado de forma conservadora. Biópsia hepática percutânea foi realizada em todos os três casos, mostrando achados histológicos compatíveis com CEP. Doença inflamatória intestinal associada não foi observada em nenhum dos pacientes. Os pacientes foram acompanhados por um tempo médio de 3,4 anos. CONCLUSÃO: CEP e colelitíase são raras na população pediátrica. Este estudo relata a colelitíase sintomática como uma apresentação de CEP e levanta a importância da suspeita de doença hepatobiliar subjacente em crianças com colelitíase sem quaisquer fatores predisponentes conhecidos e/ou que seguem um curso clínico atípico.

Convalescent plasma therapy in COVID-19 critically ill patients during advanced phases of clinical trials and their preliminary results / Terapia com plasma convalescente em pacientes graves com COVID-19 nas fases avançadas dos ensaios clínicos e seus resultados preliminares

ABSTRACT The objective of this study was to highlight the global scientific effort to fight the SARS-CoV-2, addressing the preliminary results of passive immunization through convalescent plasma. We performed a search at the major databases of interventional clinical trial protocols about the transfusion of convalescent plasma in patients with COVID-19, as well as, published articles (n≥25), using the following search strategy: [(COVID-19 OR SARS-CoV-2 OR nCoV-2019) AND (Convalescent plasma OR Plasma exchange) AND (Treatment OR Therapy)]. A total of 24 interventional clinical trial protocols (advanced in phases II-III, III, and IV) were included in this review, as well as three studies that had enough outcomes to evaluate the efficacy of convalescent plasma therapy for patients with COVID-19. All interventional clinical trial protocols applied approximately 500mL of convalescent plasma (from single or more donations) in hospitalized patients, mainly in patients with severe disease associated with standard therapy for COVID-19, and compared to placebo or standard therapy plus specific drugs. Most of interventional clinical trial protocols are multicenter, and the phase IV studies are recruiting at intercontinental centers of North America, Oceania, Europe, but most are recruiting center inside their own county. The three studies published reported similar approach of convalescent plasma intervention with decrease in length of stay, mortality, with less than 4% of adverse events, mainly for treating critical cases with life-threatening disease. All advanced clinical trials focused on convalescent plasma therapy in patients with COVID-19 hospitalized in severe conditions, and the preliminary results provide strong evidence for therapy for the COVID-19 patients.

RESUMO O objetivo deste estudo foi destacar o esforço científico global para combater o SARS-CoV-2 abordando os resultados preliminares da imunização passiva por plasma convalescente. Foi realizada uma busca nas principais bases de dados dos protocolos de ensaios clínicos intervencionistas sobre transfusão de plasma convalescente em pacientes com COVID-19, bem como artigos publicados (n≥25), utilizando a seguinte estratégia de busca: [(COVID-19 OR SARS-CoV-2 OR nCoV-2019) AND (Convalescent plasma OR Plasma exchange) AND (Treatment OR Therapy)]. Um total de 24 protocolos de ensaios clínicos intervencionistas (avançados nas fases II-III, III e IV) foi incluído nesta revisão, assim como três estudos que tiveram resultados suficientes para avaliar a eficácia da terapia com plasma convalescente para pacientes com COVID-19. Todos os protocolos de ensaios clínicos intervencionistas aplicaram cerca de 500mL de plasma convalescente (de uma ou mais doações) em pacientes hospitalizados, principalmente naqueles com grau grave de doença associada à terapia-padrão para COVID-19 em comparação com placebo ou terapia-padrão mais medicamentos específicos. A maioria dos protocolos de ensaios clínicos intervencionistas é multicêntrica, e os estudos de fase IV estão recrutando em centros intercontinentais da América do Norte, Oceania e Europa, mas a maior parte dos centros de recrutamento está dentro de seu próprio país. Os três estudos publicados relataram abordagem semelhante de intervenção para plasma convalescente com redução do tempo de internação, mortalidade e menos de 4% de eventos adversos, principalmente para o tratamento de casos críticos com risco de vida. Todos os ensaios clínicos avançados focaram na terapia com plasma convalescente em pacientes com COVID-19 hospitalizados em condições graves, e os resultados preliminares fornecem fortes evidências para a terapia para esses pacientes com COVID-19.

Chronic inflammatory periapical diseases: a Brazilian multicenter study of 10, 381 cases and literature review

Abstract The aim of this study was to investigate the epidemiological and clinical characteristics of chronic inflammatory periapical diseases in different regions of Brazil and to compare with data from the literature. A multicenter study was carried out in four Brazilian referral centers in oral diagnosis. Histopathological records were reviewed, and all cases diagnosed microscopically as periapical granuloma, radicular cyst, and periapical abscess were included. Demographic and clinical data were collected. Descriptive statistics and Pearson's chi-square test were performed. A total of 10,381 cases of chronic inflammatory periapical diseases were found (13.8% of 74,931 archived specimens) over a period of 65 years. Radicular cysts were the most common lesion (59.9%). Women (56.1%) with a mean age of 37.01 years old (range 13 to 100 ± 14.42) and people of white skin color (59.2%) were the most affected individuals by chronic inflammatory periapical diseases. The lesions were generally asymptomatic (28.1%), located in the maxilla (60.1%), and posterior region (49.8%). The radicular cysts were larger when compared to periapical granulomas (p < 0.001). The disagreement between the clinical and histopathological diagnoses was higher when the final diagnosis was a periapical granuloma (p < 0.001). Chronic inflammatory periapical diseases continue to be common lesions affecting mainly adults. This should be a consequence of the burden of untreated caries in permanent teeth. Women are more affected and radicular cyst was the most common lesion.