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      Prevalencia de Malassezia spp en pacientes con diabetes mellitus tipo 2 de acuerdo con el control glucémico Translated title: Prevalence of Malassezia spp in type 2 diabetes mellitus according to glycemic control

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          Abstract

          Resumen ANTECEDENTES: Malassezia spp es un saprófito de la piel, relacionada con diversas afecciones cutáneas, se ha reportado frecuencia elevada en pacientes con inmunosupresión. OBJETIVO: determinar la prevalencia de Malassezia spp en individuos con diabetes mellitus tipo 2 de acuerdo con el control glucémico. MATERIAL Y MÉTODO: estudio abierto, observacional, descriptivo y transversal, efectuado en pacientes voluntarios que participaron en la 24ª Carrera Nacional del Paciente con Diabetes el 15 de octubre de 2016 en la Ciudad de México, en quienes se realizó toma de glucemia capilar preprandial y hemoglobina glicosilada, así como pesquisa de Malassezia spp mediante frotis de la región malar, teñido con azul de metileno. RESULTADOS: se incluyeron 49 pacientes con diabetes mellitus tipo 2; hubo predominio de 31 pacientes sin buen control glucémico (67%) en comparación con 16 pacientes controlados (33%). Los frotis con levaduras escasas (+) estuvieron presentes en 21 (59%) pacientes sin control y en 7 (41%) pacientes con control; los frotis con cantidad de levaduras moderada (++) se observaron en 7 (74%) pacientes sin control y en 5 (26%) pacientes con control; los frotis con levaduras abundantes estuvieron presentes en 7 (63%) pacientes sin control y en 2 (37%) pacientes con control. CONCLUSIÓN: en nuestro estudio la prevalencia de Malassezia spp en pacientes con diabetes mellitus tipo 2 fue del 100%, con menor número de levaduras en los que tenían control glucémico adecuado, lo que puede indicar que la posibilidad de tener esta levadura aumenta con el descontrol glucémico y probablemente denota el grado de inmunosupresión en estos pacientes.

          Translated abstract

          Abstract BACKGROUND: Malassezia spp is a saprophyte of the skin, related to diverse cutaneous affections, and has been reported a high frequency in patients with immunosuppression. OBJECTIVE: To determine the prevalence of Malassezia spp in individuals with type 2 diabetes mellitus according to glycemic control. MATERIAL AND METHOD: An open, observational, descriptive and cross-sectional study was performed in volunteer patients who participated in the 24th National March of the Patient with Diabetes in Mexico City on October 15, 2016; where preprandial capillary glycemia and glycosylated hemoglobin were taken. We took a scraping of the malar region skin to find Malassezia spp, smears stained with methylene blue. RESULTS: A total of 49 patients with type 2 diabetes mellitus were included; there were a predominance of 31 patients without glycemic control (67%) in comparison with 16 controlled patients (33%). Smears with low yeast (+) were present in 21 (59%) uncontrolled patients and in 7 (41%) controlled patients; smears with a moderate amount of yeast (++) were present in 7 (74%) uncontrolled patients and in 5 (26%) controlled patients; smears with abundant yeasts were present in 7 (63%) uncontrolled patients and in 2 (37%) controlled patients. CONCLUSION: In our study the prevalence of Malassezia spp in patients with type 2 diabetes mellitus was of 100%, with a lower number of yeasts in patients with adequate glycemic control; this can indicate that the possibility of presenting this yeast increases with bad glycemic control and probably denotes the degree of immunosuppression in these patients.

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          Pathogenesis of type 2 diabetes mellitus.

          This article provides an overview of the pathogenesis of type 2 diabetes mellitus. Discussion begins by describing normal glucose homeostasis and ingestion of a typical meal and then discusses glucose homeostasis in diabetes. Topics covered include insulin secretion in type 2 diabetes mellitus and insulin resistance, the site of insulin resistance, the interaction between insulin sensitivity and secretion, the role of adipocytes in the pathogenesis of type 2 diabetes, cellular mechanisms of insulin resistance including glucose transport and phosphorylation, glycogen and synthesis,glucose and oxidation, glycolysis, and insulin signaling.
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            Malassezia species in skin diseases.

            Since the taxonomic revision carried out in 1996, enlarging the genus Malassezia to comprise seven different species, a number of studies have investigated from different points of view -- mycological, molecular and immunological -- the relationships of these species with the pathologies associated with lipophilic yeasts, as well as its presence in healthy skin. From these studies, it now appears clear that Malassezia globosa is the main species associated with pityriasis versicolor, which is the only cutaneous disease in which the involvement of Malassezia is undisputed. Nevertheless, this species can also be found in normal skin, in which the predominant species is Malassezia sympodialis. In the remaining dermatological disorders related to Malassezia, the role of these yeasts is controversial. In seborrhoeic dermatitis, atopic dermatitis and folliculitis, several studies have focused on the immunological aspects that could explain the pathogenic mechanism. In other diseases, such as confluent and reticulate papillomatosis, neonatal pustulosis, otitis and onychomycosis, the presence or significance of Malassezia is still a matter of dispute.
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              Cutaneous manifestations of diabetes mellitus.

              Diabetes mellitus (DM) is a heterogeneous group of disorders characterized by a high serum glucose level and by disturbances of carbohydrate and lipid metabolism. It is estimated that 11 million persons in the United States have DM, 90% of whom have non-insulin-dependent DM. At least 30% of persons with diabetes have some type of cutaneous involvement during the course of their chronic disease. This review classifies the cutaneous findings in DM into four categories: (1) skin diseases with strong to weak association with DM; (2) cutaneous infections; (3) cutaneous manifestations of diabetic complications; and (4) skin reactions to diabetic treatment. Each of these categories is reviewed as well as the pathophysiology of the normal and diabetic basement membrane for a better understanding of the cutaneous manifestations of DM.
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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                mim
                Medicina interna de México
                Med. interna Méx.
                Edición y Farmacia S.A. de C.V. (Ciudad de México, Ciudad de México, Mexico )
                0186-4866
                October 2017
                : 33
                : 5
                : 612-617
                Affiliations
                [3] orgnameHospital General Dr. Manuel Gea González México
                [1] orgnameHospital General Dr. Manuel Gea González México
                [2] orgnameHospital General Dr. Manuel Gea González México
                Article
                S0186-48662017000500612
                10.24245/mim.v33i5.1557
                dc607494-ae8c-4253-8572-0bc4920e3e7a

                This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

                History
                : 08 March 2017
                : June 2017
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 23, Pages: 6
                Product

                SciELO Mexico


                HbA1c,diabetes mellitus type 2,Malassezia spp,glycosylated hemoglobin,glycemic control,diabetes mellitus tipo 2,hemo-globina glucosilada,control glucémico

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