Esophageal Dysbiosis in Achalasia and Cancer Development: A Critical Review.

BACKGROUND: Microorganisms provide various benefits to their human hosts, including assisting with digestion, synthesizing certain vitamins, developing the gastrointestinal and immune systems, regulating metabolism, and protecting against some pathogens. However, microbial imbalances can cause tissue damage and contribute to inflammatory disorders and cancers. Microbial dysbiosis refers to an imbalance or disruption in the normal composition and function of the microbial communities that inhabit various body parts, including the gut, oral cavity, skin, and reproductive tract. Emerging research suggests that microbial dysbiosis plays a significant role in cancer development and progression. This issue is particularly relevant in achalasia, in which food stasis, changes in endoluminal pH, and poor esophageal clearance might contribute to esophageal microbial dysbiosis. This study aimed to evaluate the association between dysbiosis and esophageal cancer development, focused on esophageal dysmotility disorders. METHODS: This study is a critical review, gathering the current evidence for the association between dysbiosis and the development of esophageal cancer. RESULTS: Studies have shown that microbiota play a role in cancer development, although the mechanisms for how they do so are not yet fully understood. One possible explanation is that microbiota alterations can lead to chronic inflammation, promoting cancer cell growth. Additionally, some bacteria produce toxins that can damage DNA and cause genomic instability, and certain bacterial products can promote tumor growth. CONCLUSION: Despite the close relationship between dysbiosis and cancer development in esophageal dysmotility disorders, further investigations are still needed to elucidate the precise mechanisms by which dysbiosis contributes to cancer development and to identify potential therapeutic interventions targeting the microbiota to prevent or treat cancer.

Influence of clinical factors, IL4 and IL6 genes polymorphisms in functional healing in late replantation.

To investigate the genetic association in a sample of replanted teeth, it is necessary to observe the extreme phenotypes, such as, teeth that underwent functional healing and those extracted due to severe external root resorption. Thus, this study aimed to investigate the association of age of the patients, root development, storage media, and polymorphisms in the interleukin 4 (IL4) and interleukin 6 (IL6) genes with teeth that presented extreme outcomes, as functional healing or extraction, in a group whose replantation techniques did not follow the International Association of Dental Traumatology (IADT) 2012 guidelines. Forty-three avulsed and replanted teeth that did not follow IADT 2012 guidelines and underwent functional healing or were extracted were included. Periapical radiographs employed for this study were taken soon after tooth replantation and after 1 year. For genotypic IL4 and IL6 genes analysis, DNA of oral mucosa cells was extracted. Real-time- PCR performed for genotyping polymorphisms in IL4 and IL6 genes. Clinical and genetic variables were analyzed by the Chi-square test and the "Z" test. P values < .05 were considered significant. The results showed that functional healing and extraction were associated with storage media and with the rs2243268 of IL- 4 gene polymorphisms. As conclusion, the C rs2243268 allele of IL4 gene may have a positive relationship with functional healing teeth that were replanted not following the 2012 IADT guidelines. Keeping the tooth dry is associated to a fast loss of avulsed and replanted teeth after 1-year follow-up.

Influence of clinical factors, IL4 and IL6 genes polymorphisms in functional healing in late replantation

Abstract To investigate the genetic association in a sample of replanted teeth, it is necessary to observe the extreme phenotypes, such as, teeth that underwent functional healing and those extracted due to severe external root resorption. Thus, this study aimed to investigate the association of age of the patients, root development, storage media, and polymorphisms in the interleukin 4 (IL4) and interleukin 6 (IL6) genes with teeth that presented extreme outcomes, as functional healing or extraction, in a group whose replantation techniques did not follow the International Association of Dental Traumatology (IADT) 2012 guidelines. Forty-three avulsed and replanted teeth that did not follow IADT 2012 guidelines and underwent functional healing or were extracted were included. Periapical radiographs employed for this study were taken soon after tooth replantation and after 1 year. For genotypic IL4 and IL6 genes analysis, DNA of oral mucosa cells was extracted. Real-time- PCR performed for genotyping polymorphisms in IL4 and IL6 genes. Clinical and genetic variables were analyzed by the Chi-square test and the "Z" test. P values < .05 were considered significant. The results showed that functional healing and extraction were associated with storage media and with the rs2243268 of IL- 4 gene polymorphisms. As conclusion, the C rs2243268 allele of IL4 gene may have a positive relationship with functional healing teeth that were replanted not following the 2012 IADT guidelines. Keeping the tooth dry is associated to a fast loss of avulsed and replanted teeth after 1-year follow-up.

Resumo Para investigar a influência genética em uma amostra de dentes reimplantados, é necessário observar os fenótipos extremos, como os dentes que sofreram cura funcional e os extraídos devido à reabsorção radicular externa severa. Assim, este estudo teve como objetivo investigar a associação da idade dos pacientes, desenvolvimento radicular dos dentes, assim como o meio de transporte até o reimplante e polimorfismos nos genes da interleucina 4 (IL4) e da interleucina 6 (IL6) com dentes que apresentaram cura funcional ou extração, em um grupo cujas técnicas de reimplante não seguiu a International Association of Dental Traumatology (IADT) 2012. Foram incluídos 43 dentes avulsionados e reimplantados que não seguiram as diretrizes do IADT, e tiveram cura funcional ou foram extraídos. As radiografias periapicais utilizadas para este estudo foram feitas logo após o reimplante dentário e após 1 ano. Para a análise genotípica dos genes IL4 e IL6, foi extraído DNA de células da mucosa oral. PCR em tempo real realizou a análise dos polimorfismos dos genes. As variáveis ​​clínicas e genéticas foram analisadas pelos testes Qui-quadrado e "Z". Valores de p <0,05 foram considerados significativos. Os resultados mostraram que a cura ou perda dos dentes está associada ao meio de armazenamento e polimorfismos no gene rs2243268 da IL-4. Como conclusão, o alelo C rs2243268 do gene IL4 pode ter uma relação positiva com a cura functional do dente reimplantado. Manter o dente seco está associado a uma perda rápida de dentes avulsionados e reimplantados que não seguiram o IADT 2012.

Conhecimento dos estudantes da área da saúde sobre as condutas de biossegurança e prevençãoda transmissão da COVID-19 / Healthcare students' knowledge about biosafety and prevention of COVID-19

Apandemia de COVID-19impôs ainterrupção deatividades presenciais coletivaseos profissionais de saúde foram os mais afetados, por estarem na linha de frente no combate desta doença. Medidas de biossegurança tiveram que ser redobradas para evitar a propagação do vírus e assim ajudar a controlar apandemia. Procedimentos que geram aerossóis na Odontologia foram evitados, pois é de conhecimento que um dos meios de transmissão é a saliva. Alguns Equipamentos de Proteção Individual(EPs) foram adicionados para garantir a proteção, e protocolos de desinfecção do ambiente foram modificados. O objetivo deste estudo foi avaliar o grau de conhecimento sobre biossegurança entre estudantes da área da saúde. Foiaplicado um questionário eletrônicopara a comunidade relacionada aos cursos da área da saúde na cidade de Curitiba/PR. Cento e cinquenta e novealunos responderam ao questionário, sendo 107 (67,3%) estudantesdaOdontologia, 28 (17,6%) da Medicina, 17 (10,7%) da Biomedicina e 7 (4,4%) daEnfermagem. Entre os participantes, 63,55% dos alunos de Odontologia, 100% de Medicina, 64,71% de Biomedicina e 85,71% de Enfermagem acreditam que os alunos da graduação não estão preparados para fazer atendimentos de urgência em pacientes com COVID-19. Apesar de toda a orientação sobre biossegurança, os alunos da área da saúde ainda devem desenvolver habilidades quanto aoscorretos procedimentos para atendimento de pacientes portadores ou não de doenças transmissíveis (AU).

Because of the COVID-19 pandemic, people all over the world had to interrupt their face-to-face interactions. Health professionals were most affected, as they were at the forefront of combating this disease. Biosecurity measures had to be re-doubled to prevent the spread of the virus and thus help control the pandemic. Procedures in dentistry that generated aerosols were avoided, as saliva is one of the means ofCOVID-19transmission. Complementary Personal Protective Equipment (PPE) was required to ensure protection, and environmental disinfection protocols had been modified. Thus, to assess the level of knowledge about biosafety and these new changes, particularly regarding COVID-19, a questionnaire was published for the community related to health courses in the city of Curitiba (PR, Brazil). This study included 159 students (dentistry, 107 (67.3%); medicine, 28 (17.6%); biomedicine, 17 (10.7%); and nursing, seven (4.4%)). Approximately 63.55% of dentistry, 100% of medicine, 64.71% of biomedical, and 85.71% of nursing students believe that undergraduate students are unprepared to provide urgent care to COVID-19 patients. Despite all the guidance on biosafety, students in healthcaremust still develop skills incorrect procedures for caring forpatients with or without communicable diseases (AU).

Conhecimento dos estudantes da área da saúde sobre as condutas de biossegurança e prevençãoda transmissão da COVID-19 / Healthcare students' knowledge about biosafety and prevention of COVID-19

Apandemia de COVID-19impôs ainterrupção deatividades presenciais coletivaseos profissionais de saúde foram os mais afetados, por estarem na linha de frente no combate desta doença. Medidas de biossegurança tiveram que ser redobradas para evitar a propagação do vírus e assim ajudar a controlar apandemia. Procedimentos que geram aerossóis na Odontologia foram evitados, pois é de conhecimento que um dos meios de transmissão é a saliva. Alguns Equipamentos de Proteção Individual(EPs) foram adicionados para garantir a proteção, e protocolos de desinfecção do ambiente foram modificados. O objetivo deste estudo foi avaliar o grau de conhecimento sobre biossegurança entre estudantes da área da saúde. Foiaplicado um questionário eletrônicopara a comunidade relacionada aos cursos da área da saúde na cidade de Curitiba/PR. Cento e cinquenta e novealunos responderam ao questionário, sendo 107 (67,3%) estudantesdaOdontologia, 28 (17,6%) da Medicina, 17 (10,7%) da Biomedicina e 7 (4,4%) daEnfermagem. Entre os participantes, 63,55% dos alunos de Odontologia, 100% de Medicina, 64,71% de Biomedicina e 85,71% de Enfermagem acreditam que os alunos da graduação não estão preparados para fazer atendimentos de urgência em pacientes com COVID-19. Apesar de toda a orientação sobre biossegurança, os alunos da área da saúde ainda devem desenvolver habilidades quanto aoscorretos procedimentos para atendimento de pacientes portadores ou não de doenças transmissíveis (AU).

Because of the COVID-19 pandemic, people all over the world had to interrupt their face-to-face interactions. Health professionals were most affected, as they were at the forefront of combating this disease. Biosecurity measures had to be re-doubled to prevent the spread of the virus and thus help control the pandemic. Procedures in dentistry that generated aerosols were avoided, as saliva is one of the means ofCOVID-19transmission. Complementary Personal Protective Equipment (PPE) was required to ensure protection, and environmental disinfection protocols had been modified. Thus, to assess the level of knowledge about biosafety and these new changes, particularly regarding COVID-19, a questionnaire was published for the community related to health courses in the city of Curitiba (PR, Brazil). This study included 159 students (dentistry, 107 (67.3%); medicine, 28 (17.6%); biomedicine, 17 (10.7%); and nursing, seven (4.4%)). Approximately 63.55% of dentistry, 100% of medicine, 64.71% of biomedical, and 85.71% of nursing students believe that undergraduate students are unprepared to provide urgent care to COVID-19 patients. Despite all the guidance on biosafety, students in healthcaremust still develop skills incorrect procedures for caring forpatients with or without communicable diseases (AU).