Innovating the fight against syphilis: SIM Project / Inovando a luta contra a sífilis: Projeto SIM

Introduction: Syphilis is a major public health problem. Its incidence has increased in Brazil, particularly in the Southern Region. New tools are available, and immediate action is necessary. Objective: To describe the pilot study of an investigation aimed to assess the prevalence of syphilis, hepatitis B and C, and HIV and evaluate three strategies for adherence to syphilis treatment. Methods: A spontaneous sample of participants was evaluated with a structured questionnaire and underwent rapid tests for syphilis, HIV, and hepatitis B and C after signing an informed consent form (ICF). Rapid tests reagent for syphilis were confirmed by quantitative venereal disease research laboratory (VDRL) and Treponema pallidum hemagglutination assay (TPHA). Participants with confirmation of syphilis were randomized into three groups for follow-up: telephone calls, SIM app, and usual care at the health unit. Results: During a two-day pilot, 68 participants were included. Fourteen (20.6%) had tests reagent for syphilis, 1 (1.5%) for hepatitis B, 3 (4.4%) for hepatitis C, and 1 (1.5%) for HIV. Eight (57.1%) of the initial 14 individuals with rapid tests reagent for syphilis agreed to participate in the study. Out of the 8 rapid tests for syphilis, 2 (25%) were confirmed as active syphilis (>1/8). Conclusion: The prevalence of active syphilis estimated in this population was 3.5%. The demand for tests was high. The COVID-19 epidemic had a negative impact on the development of the study, which is ready for implementation. Discussions on the role of such a testing unit and the coverage of the research project in a context that requires increasing COVID-19-focused testing are fundamental for the future development of the project.

Introdução: A sífilis é um importante problema de saúde pública. A incidência tem aumentado no Brasil, principalmente na Região Sul. Novas ferramentas estão disponíveis e uma ação imediata é necessária. Objetivo: Descrever o estudo piloto de uma pesquisa que avalia a prevalência de sífilis, hepatites B e C e HIV e três estratégias de aderência ao seguimento do tratamento. Métodos: Uma amostra espontânea de participantes foi avaliada com um questionário estruturado e testes rápidos para sífilis, HIV e hepatites B e C foram realizados após assinatura do Termo de Consentimento Livre e Esclarecido (TCLE). Os testes rápidos reagentes para sífilis foram confirmados por VDRL (venereal disease research laboratory) quantitativo e hemaglutinação para sífilis (Treponema pallidum hemagglutination assay ­ TPHA). Os participantes com confirmação de sífilis foram randomizados em três grupos para acompanhamento: ligações telefônicas, aplicativo do SIM e cuidados habituais na unidade de saúde. Resultados: Durante um piloto de dois dias, 68 participantes foram incluídos. Quatorze (20,6%) tiveram testes reagentes para sífilis, 1 (1,5%) para hepatite B, 3 (4,4%) para hepatite C e 1 (1,5%) para HIV. Oito (57,1%) dos 14 casos iniciais com teste rápido reagente para sífilis aceitaram participar do estudo. Dos 8 testes rápidos para sífilis, 2 (25%) foram confirmados como sífilis ativa (>1/8). Conclusão: A prevalência de sífilis ativa estimada nesta população foi de 3,5%. A demanda por exames foi alta. A epidemia de COVID-19 impactou negativamente o desenvolvimento do estudo, que está pronto para implementação. A discussão sobre o papel desta espécie de unidade de teste e a abrangência do projeto de pesquisa em um contexto que pede a expansão de testes focados na COVID-19 são fundamentais para o desenvolvimento futuro do projeto.

Hampered Vitamin B12 Metabolism in Gaucher Disease?

Abstract Untreated vitamin B12 deficiency manifests clinically with hematological abnormalities and combined degeneration of the spinal cord and polyneuropathy and biochemically with elevated homocysteine (Hcy) and methylmalonic acid (MMA). Vitamin B12 metabolism involves various cellular compartments including the lysosome, and a disruption in the lysosomal and endocytic pathways induces functional deficiency of this micronutrient. Gaucher disease (GD) is characterized by dysfunctional lysosomal metabolism brought about by mutations in the enzyme beta-glucocerebrosidase (Online Mendelian Inheritance in Man (OMIM): 606463; Enzyme Commission (EC) 3.2.1.45, gene: GBA1). In this study, we collected and examined available literature on the associations between GD, the second most prevalent lysosomal storage disorder in humans, and hampered vitamin B12 metabolism. Results from independent cohorts of patients show elevated circulating holotranscobalamin without changes in vitamin B12 levels in serum. Gaucher disease patients under enzyme replacement therapy present normal levels of Hcy and MMA. Although within the normal range, a significant increase in Hcy and MMA with normal serum vitamin B12 was documented in treated GD patients with polyneuropathy versus treated GD patients without polyneuropathy. Thus, a functional deficiency of vitamin B12 caused by disrupted lysosomal metabolism in GD is a plausible mechanism, contributing to the neurological form of the disorder but this awaits confirmation. Observational studies suggest that an assessment of vitamin B12 status prior to the initiation of enzyme replacement therapy may shed light on the role of vitamin B12 in the pathogenesis and progression of GD.

High incidence of oncogenic HPV genotypes found in women from Southern Brazil

Oncogenic HPV genotypes are strongly associated with premalignant and malignant cervical lesion. The purpose was to determine human papillomavirus (HPV) prevalence and genotypes, and to estimate cervical cancer risk factor associations. Cervical samples were obtained from 251 women seeking gynecological care at the Pelotas School of Medicine Clinic. This is a cross-sectional study. HPV-DNA was amplified by nested-PCR using MY09/11 and GP5/6 primers, and the sequencing was used for genotyping. Sociodemographic and behavioral risk factors were obtained by closed questionnaire, and its relationship to HPV infection prevalence were analyzed. Statistical analyses were performed using SPSS 16.0 software, and differences were considered significant at p < 0.05. As results, the prevalence of HPV infection was 29.9%. The most frequent genotype was HPV-16 (41.3%), followed by HPV-18 (17.3%), and HPV-33 (9.3%). Others nine HPV genotypes were also found. On this population, prevalence of oncogenic HPV genotypes was high, but does not seem to confer relationship with the risk factors investigated. Future investigations in larger populations are necessary, for the proposition of more appropriated monitoring strategies and treatment according to the Brazilian health service reality, as well as patients.