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1.
Rev. ADM ; 79(4): 218-223, jul.-ago. 2022. tab
Article in Spanish | LILACS | ID: biblio-1396089

ABSTRACT

Objetivo: actualizar la información sobre la disbiosis bacteriana oral y su efecto en enfermedades bucales. Material y métodos: se realizó una revisión bibliográfica detallada, donde la búsqueda de artículos comenzó desde el 2014 con trabajos de investigación relacionados con el tema. Se aplicaron palabras clave para facilitar y delimitar el tema. En los resultados obtenidos se observa información específica de disbiosis bacteriana y los problemas y enfermedades que causan en la cavidad bucal. Conclusión: la cavidad oral es un ecosistema muy complejo e interactivo donde se desarrollan variedades de hábitats que establecen relaciones entre los microorganismos en los distintos medios bucales. Por lo general, el cuerpo humano vive en simbiosis con dichas bacterias, esta relación hospedador-huésped es producto de años de evolución y convivencia para poder tolerar a dichas especies y por medio de años de investigación, determinar a los agentes patógenos y a los simbióticos, lo que permitirá en un futuro tener enfoques terapéuticos y científicos, para así solucionar, mejorar y evitar problemas relacionados con la salud (AU)


Objective: this review aimed to update the information on oral bacterial dysbiosis and its effect on oral diseases. Material and methods: a detailed literature review was performed, where the search for articles began in 2014 with research papers related to the topic. Keywords were applied to facilitate and delimit the topic. The results obtained show specific information on bacterial dysbiosis and the problems and diseases they cause in the oral cavity. Conclusion: the oral cavity is a very complex and interactive ecosystem where a variety of habitats develop and establish relationships between microorganisms in different oral environments. Generally, the human body lives in symbiosis with these bacteria, this host-guest relationship is the product of years of evolution and coexistence to be able to tolerate these species and through years of research to determine the pathogens and symbiotics, which will allow in the future to have therapeutic and scientific approaches, to solve, improve and avoid health-related problems (AU)


Subject(s)
Humans , Bacterial Infections/complications , Dysbiosis/etiology , Mouth Diseases/microbiology , Gram-Positive Rods/pathogenicity , Gram-Negative Aerobic Rods and Cocci/pathogenicity , Dental Plaque/microbiology , Host Microbial Interactions , Mouth/microbiology
2.
J. venom. anim. toxins incl. trop. dis ; 27: e20200027, 2021. tab, graf
Article in English | VETINDEX, LILACS | ID: biblio-1287091

ABSTRACT

Mycobacterium leprae and Mycobacterium lepromatosis are gram-positive bacterial pathogens and the causative agents of leprosy in humans across the world. The elimination of leprosy cannot be achieved by multidrug therapy alone, and highlights the need for new tools and drugs to prevent the emergence of new resistant strains. Methods In this study, our contribution includes the prediction of vaccine targets and new putative drugs against leprosy, using reverse vaccinology and subtractive genomics. Six strains of Mycobacterium leprae and Mycobacterium lepromatosis (4 and 2 strains, respectively) were used for comparison taking Mycobacterium leprae strain TN as the reference genome. Briefly, we used a combined reverse vaccinology and subtractive genomics approach. Results As a result, we identified 12 common putative antigenic proteins as vaccine targets and three common drug targets against Mycobacterium leprae and Mycobacterium lepromatosis. Furthermore, the docking analysis using 28 natural compounds with three drug targets was done. Conclusions The bis-naphthoquinone compound Diospyrin (CID 308140) obtained from indigenous plant Diospyros spp. showed the most favored binding affinity against predicted drug targets, which can be a candidate therapeutic target in the future against leprosy.(AU)


Subject(s)
Gram-Positive Rods/pathogenicity , Vaccinology , Mycobacterium leprae/pathogenicity , Mycobacterium lepraemurium/pathogenicity
3.
Bol. Hosp. San Juan de Dios ; 45(2): 124-31, mar.-abr. 1998. tab
Article in Spanish | LILACS | ID: lil-211861

ABSTRACT

Se presenta un caso de enfermedad de Whipple confirmado, en una mujer de 61 años, por estudio histológico de biopsias escalonadas de duodeno y yeyuno.Se señala la etiología bacteriana y el carácter sistémico de la afección, que es producida por la Tropheryma whippelii, que es un bacilo Gram positivo con forma de hoz. Se describe el cuadro clínico que es esencialmente polimorfo pero dentro del cual destacan la diarrea crónica de tipo alto, con caracteres de síndrome de malabsorción y marcado compromiso progresivo del estado general; las artralgias y poliartritis y la fiebre. La enfermedad responde favorablemente a diversos antibióticos que deben administrarse en forma prolongada para intentar reducir las recurrencias que son muy frecuentes y que comprometen muchas veces al sistema nervioso central


Subject(s)
Humans , Female , Middle Aged , Gram-Positive Rods/pathogenicity , Whipple Disease/diagnosis , Anti-Bacterial Agents/therapeutic use , Biopsy , Diarrhea/etiology , Duodenum/pathology , Gram-Positive Rods/immunology , Jejunum/pathology , Joint Diseases/etiology , Malabsorption Syndromes/etiology , Signs and Symptoms , Whipple Disease/drug therapy , Whipple Disease/etiology , Whipple Disease/pathology
4.
Rev. méd. Hosp. Säo Vicente de Paulo ; 8(19): 37-9, jul.-dez. 1996. ilus
Article in Portuguese | LILACS | ID: lil-198373

ABSTRACT

A Doença de Whipple é uma doença bacteriana sistêmica rara, com maior incidência entre a quarta e sexta décadas, no sexo masculino e na raça caucasiana. Cursa com infiltraçäo por macrófagos com grânulo PAS positivos nos órgäos e tecidos afetados. O microrganismo responsável é o bacilo gram-positivo intracelular Tropheryma whippelli. Relata-se o caso de paciente masculino, 53 anos, branco, quadro clínico compatível com doença má-absortiva, cujo diagnóstico foi realizado através da esôfago-gastroduodenoscopia com presença de papilite e duodenite serveras, onde a biópisa evidenciou os grânulos PAS positivos infiltrando a lâmina própria do intestino delgado. Após 3 meses de tratamento com sulfametoxazol e trimetroprim, apresenta-se assintomático e com ganho ponderal satisfatório. Como os sintomas da DW säo inespecíficos é importante a realizaçäo de diagnóstico diferencial com outras doenças má-absortivas(doença celíaca, doença de Crohn, linfoma intra-abdominal, SIDA)


Subject(s)
Humans , Male , Middle Aged , Whipple Disease/diagnosis , Gram-Positive Rods/pathogenicity , Whipple Disease/etiology , Whipple Disease/therapy
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