ABSTRACT
BACKGROUND: Soft tissue or skin infections due to nontuberculous mycobacteria (NTM) have been reported frequently and are mostly associated with trauma or cosmetic interventions like plastic surgery. However, infection with NTM as a result of a dental procedure have rarely been described and the lack of clinical suspicion and a clear clinical manifestation makes diagnosis challenging. CASE PRESENTATION: We report on three patients with a facial cutaneous sinus tract of dental origin, due to an infection with respectively Mycobacterium fortuitum, M. abscessus and M. peregrinum. The infection source was the dental unit waterlines (DUWLs), which were colonized with NTM. CONCLUSIONS: Water of the DUWL can pose a health risk. This report emphasizes the need for quality control and certification of water flowing through DUWLs, including the absence of NTM. Our report also shows the need for a rapid recognition of NTM infections and accurate laboratory diagnosis in order to avoid long-term ineffective antibiotic treatment.
Subject(s)
Face/microbiology , Mycobacterium Infections, Nontuberculous/diagnosis , Nontuberculous Mycobacteria/isolation & purification , Adolescent , Child , DNA, Viral/metabolism , Female , Fungi/isolation & purification , Humans , Mycobacterium Infections, Nontuberculous/microbiology , Mycobacterium fortuitum/genetics , Mycobacterium fortuitum/isolation & purification , Nontuberculous Mycobacteria/genetics , Water Microbiology , Young AdultABSTRACT
La psoriasis es una enfermedad inflamatoria crónica de la piel. Su etiología es multifactorial e incluye susceptibilidad genética, factores inmunológicos y múltiples elementos ambientales, que pueden desencadenar y/o exacerbar la enfermedad. En las últimas décadas se han realizado investigaciones minuciosas sobre la patogénesis de la psoriasis, han sido reconocidos varios subtipos de células T que tienen un papel fundamental en el establecimiento de la inflamación en lesiones cutáneas. Los estudios genéticos brindan las bases para la construcción del modelo de la enfermedad, demostrando que las células dendríticas, los linfocitos T y los queratinocitos desempeñan un rol clave en la patología de esta entidad, así como también un conjunto de citoquinas que impulsan la inflamación psoriásica, dentro de las que se incluyen TNFα, IL-22, IL-23 e IL-17, las cuales promueven la respuesta inflamatoria de queratinocitos, y la producción de péptidos antimicrobianos, citoquinas y quimiocinas, perpetuando así la respuesta inflamatoria. En la actualidad, el desarrollo de varios fármacos biológicos altamente eficaces ha revolucionado el tratamiento de la psoriasis en placas de moderada a severa. Estos medicamentos son un reflejo de una mayor comprensión de la patogénesis de la psoriasis, incluyendo la importancia central de IL-23 e IL17 y las diferentes vías de señalización. El objetivo de este trabajo es realizar una revisión crítica de la literatura sobre la psoriasis y los mecanismos implicados en su imnunopatogenia(AU)
Psoriasis is a chronic inflammatory disease of the skin. Its etiology involves several agents such as genetic susceptibility, immunological factors and multiple environmental elements, which can trigger and / or exacerbate the disease. In recent decades thorough research has been conducted on the pathogenesis of psoriasis, several T-cell subtypes that play a key role in the establishment of inflammation in skin lesions have been recognized. Genetic studies provide the basis for the construction of the disease model, demonstrating that dendritic cells, T lymphocytes and keratinocytes play a key role in the pathology of this entity, as well as a set of cytokines that drive psoriatic inflammation , such as include TNF , IL-22, IL-23 and IL-17, which promote the inflammatory response of keratinocytes, and the production of antimicrobial peptides, cytokines and chemokines, thus perpetuating the inflammatory response. At present, the development of several highly effective biological drugs has revolutionized the treatment of moderate to severe plaque psoriasis. These drugs are a reflection of a greater understanding of the pathogenesis of psoriasis, including the central importance of IL-23 and IL-17 and different signaling pathways. The objective of this work is to perform a critical review of the literature on psoriasis and the mechanisms involved in its imnunopathogenesi(AU)
