Flutuações sazonais e do horário de verão nas pesquisas do Google para dermatite seborreica do couro cabeludo / Seasonal and daylight saving time fluctuations in Google searches for scalp seborrheic dermatitis

Acredita-se que a dermatite seborreica do couro cabeludo, ou caspa, piore em gravidade durante o inverno, quando ocorre o nascer do sol tardio e menos luz do dia. Neste estudo, investigamos as tendências no interesse do mecanismo de pesquisa pelo termo "caspa", visto que se relacionam com as mudanças na luz do dia, nascer do sol e sazonalidade. Analisamos o interesse de pesquisa em vários países de latitudes variáveis em um período de cinco anos e exploramos o efeito do horário de verão sobre o interesse por doenças em duas cidades dos Estados Unidos. Discutimos nossas descobertas no contexto de mudanças hormonais e cuidados com a pele/comportamento

Scalp seborrheic dermatitis, or dandruff, is thought to worsen during the winter when there is later sunrise and less daylight. This study investigates trends in search engine interest for the term "dandruff" as they relate to changes in daylight, sunrise, and seasonality. We investigated the search interest in several countries of varying latitudes over a five-year period, and we explore the effect of daylight saving time on disease interest within two cities in the United States. We discuss our findings in the context of hormonal changes and skincare/behavior

Eficacia terapéutica frente a la caspa grasa y la caspa seca de compuestos basados en terpineol, ácido salicílico y climbazol / Therapeutic effectiveness against oily or dry dandruff of compounds based on terpineol, salicylic acid and climbazole

Introducción: la caspa se define como una descamación excesiva del cuero cabelludo, en general acompañada de prurito. Su etiología es multifactorial y depende de la presencia de levaduras del género Malassezia, de la producción de sebo y de la susceptibilidad individual. Más allá de los tratamientos tradicionales para controlar la caspa, existen nuevas formulaciones que pueden incluir queratolíticos como el ácido salicílico, el climbazol, que además de agente antimicótico presenta potenciales propiedades antiproteolíticas o el terpineol, antimicótico de amplio espectro con acción antiinflamatoria. Objetivo: el objetivo principal de este estudio, consistió en evaluar el efecto sobre la caspa grasa de un champú con terpineol, extracto de sauce, ácido salicílico, climbazol y lipoaminoácido seborregulador y de una loción con terpineol, ácido salicílico, climbazol y glucósidos del extracto de roble y té verde. Se evaluó igualmente la eficacia sobre la caspa seca de un champú con terpineol, extracto de sauce, ácido salicílico y climbazol. Se realizaron una visita inicial (T0), otra al finalizar tratamiento (T28) y una final (T42), para evaluar la eventual reaparición de la caspa una vez suspendido el tratamiento. Material y Método: estudio unicéntrico abierto, no aleatorizado, a simple ciego, de 42 días de duración, llevado a cabo en 78 pacientes con caspa grasa o seca. Se clasificó la gravedad de la caspa en 4 grados. Según el tipo de caspa y su grado, se administraron un champú para caspa grasa (A), un champú para caspa seca (B), una loción para caspa grasa (C) o un champú neutro (D). Se establecieron 4 grupos de tratamiento en función del producto asignado (A, B, AC y CD). Resultados: un 59% de los participantes fueron mujeres y un 41% varones. La edad media fue de 47 años (rango 20-72). Del total de pacientes: 20 presentaron caspa grasa en grado medio-bajo (grupo A), 20 caspa seca en cualquier grado (grupo B), 17 caspa grasa en grado elevado (grupo AC) y 21 caspa grasa en grado medio-alto (grupo CD). Al cabo de cuatro semanas de tratamiento, el grado de caspa se redujo vs. basal en ≥70% de los casos en todos los grupos. Estas cifras ascendieron, en los pacientes con caspa grasa, a un 70% (grado bajo-medio), un 76,2% (grado medio-alto) y un 88,2% (grado elevado); el efecto fue más notable en aquellos con caspa seca, donde la cifra fue del 90%. La eliminación de la caspa fue completa en el 78,5%, 62,5%, 47% y 44,4% de ellos, respectivamente. Una vez transcurridas las dos semanas de lavado posterior al tratamiento, el nivel de caspa siguió descendiendo en un 55% de los pacientes tratados con el champú A, un 57,1% de los que emplearon la loción C, el 58,8% de los que usaron el champú A + la loción C, y el 35% de los que recibieron el champú B. Se declararon satisfechos o muy satisfechos con el producto un 70% de los pacientes del grupo A, un 80% del grupo B, un 66,7% del grupo CD y un 70,6% del grupo AD. Conclusiones: los resultados obtenidos en este estudio, orientan acerca de la eficacia frente a la caspa grasa y la caspa seca de dos champúes y una loción basados en terpineol, ácido salicílico y climbazol. Se requieren investigaciones adicionales que amplíen los resultados en este campo.

Introduction: dandruff is defined as excessive flaking of the scalp accompanied by itching. The etiology is multifactorial and depends on the presence of Malassezia yeasts, sebum production and individual susceptibility. Beyond traditional treatments to control dandruff, there are new formulations that may include keratolytics such as salicylic acid; climbazole, an antifungal agent which potential antiproteolytic properties, or terpineol, broad-spectrum antifungal with antiinflammatory action. Objective: the main objective of this study was to evaluate the effect on seborrheic dandruff of a shampoo with terpineol, willow extract, salicylic acid, climbazole and sebum-regulating lipoaminoacid, and a lotion with terpineol, salicylic acid, climbazole and glycosides from oak and green tea extract. Effectiveness on dry dandruff of a shampoo containing terpineol, willow extract, salicylic acid and climbazole was also evaluated. Three study visits were performed (T0, T28 and T42). Methods: single-center, open, non-randomized, single-blind, 42-day study conducted in 78 patients with seborrheic or dry dandruff. Dandruff severity was classified into 4 grades. A shampoo for oily dandruff (A), a shampoo for dry dandruff (B), a lotion for oily dandruff (C) and a neutral shampoo (D) were administered. Four treatment groups were established according to the assigned treatment (A, B, AC and CD). Results: 59% of participants were women and 41% men. The average age was 47 years (range 20-72). Of the total patients, 20 had medium-low oily dandruff (group A), 20 dry dandruff at any level (group B), 17 severe oily dandruff (AC) and 21 medium-high oily dandruff (group CD). After four weeks of treatment the severity of dandruff was reduced vs. baseline in ≥70% of cases in all groups; for oily dandruff results were 70% (low-medium grade), 76.2% (medium-high) and 88.2% (high level); the effect was most marked in patients with dry dandruff (90%). Dandruff removal was complete in 78.5%, 62.5%, 47% and 44.4% of them, respectively. Two weeks after having suspended the treatment, dandruff level continued to decline in 55% of patients treated with shampoo A, 57.1% of those who used the lotion C, 58.8% of patients who used shampoo A + lotion C, and 35% of those receiving shampoo B. Seventy per cent of patients in group A, 80% in group B, 66.7% of the CD group and 70.6% of the AD group were satisfied or very satisfied with the study treatments. Conclusions: the results obtained in this study suggest the effectiveness against oily and dry dandruff of two shampoos and a lotion based on terpineol, salicylic acid and climbazole. Further research to extend the results in this field is required.

Mechanism of Xiao Chaihu Decoction in the Treatment of Endometriosis / 中药新药与临床药理

Objective To explore the mechanism of Xiao Chaihu decoction in t he treatment of endometriosis in rats.Methods The rat model of endometriosis w as established. Fas and Caspase- 3 protein expression in the eutopic endometriu m and eutopic endometrium were observed by immunohistochemical method.Results The protein expression of Fas and Caspase- 3 in ectopic endometrium of Xiao Cha ihu decoction group was higher than that in the eutopic endometrium, while the r esult in the control group was just the opposite. No significant difference was shown in Danazol group. Conclusion The therapeutic mechanism of Xiao Chaihu de coction for endometriosis may be related to the promotion the apoptosis of ectop ic endometrium tissue by increasing Fas protein expression.