Susceptibility and alterations by diflubenzuron in larvae of Aedes aegypti.

Benzoylphenyl ureas inhibit chitin synthesis and interfere with the molting process in arthropods. In this study, the effect of diflubenzuron on third-instar larvae of Aedes aegypti was evaluated. The susceptibility to the product was determined, and the alterations generated were shown through light and electron microscopy. LC50 and LC90 were 0.23 and 0.47 ppm, respectively. The main alterations observed were the incapacity to complete the molt, a reduction of mobility, the fragmentation of the old cuticle, a division of the body segments that was not evident, and the deformation of the caudal structures. Images of the ultrastructure are included, where breaking zones in the cuticle were observed, separation of the cuticle, the epidermis and the muscles, and these latter with a disorganized arrangement. In low concentrations, from 0.15 ppm, diflubenzuron causes alterations in the behavior and morphology of Ae. aegypti.

Sex Differences Among Participants in the Latin American Stroke Registry.

Background Reports on sex differences in stroke outcome and risk factors are scarce in Latin America. Our objective was to analyze clinical and prognostic differences according to sex among participants in the LASE (Latin American Stroke Registry). Methods and Results Nineteen centers across Central and South America compiled data on demographics, vascular risk factors, clinical stroke description, ancillary tests, and functional outcomes at short-term follow-up of patients included from January 2012 to January 2017. For the present study, all these variables were analyzed according to sex at hospital discharge. We included 4788 patients with a median in-hospital stay of 8 days (interquartile range, 5-8); 2677 were male (median age, 66 years) and 2111 female (median age, 60 years). Ischemic stroke occurred in 4293: 3686 as cerebral infarction (77%) and 607 as transient ischemic attack cases (12.7%); 495 patients (10.3%) corresponded to intracerebral hemorrhage. Poor functional outcome (modified Rankin scale, 3-6) was present in 1662 (34.7%) patients and 38.2% of women (P<0.001). Mortality was present in 6.8% of the registry, with 7.8% in women compared with 6.0% in men (P=0.01). Death and poor functional outcome for all-type stroke showed a higher risk in female patients (hazard ratio, 1.3, P=0.03; and hazard ratio, 1.1, P=0.001, respectively). Conclusions A worse functional outcome and higher mortality rates occurred in women compared with men in the LASE, confirming sex differences issues at short-term follow-up.

Type III Takayasu's arteritis in a pediatric patient. Case report and review of the literature.

Takayasu's arteritis (TA), also known as "pulseless disease", is the third most common vasculitis in childhood. It is a chronic, idiopathic, granulomatous vasculitis that involves large vessels. It occurs most commonly in females with a 4:1 ratio over males; the average age of appearance is 26 years. Its cause is unknown. Here we report the case of a 7-year-old girl, with type III TA according to the Numano classification, in the ischemic phase, treated with corticosteroids and immunosuppressive agents and early angioplasty due to the severity of the disease. The outcome was satisfactory. The diagnosis of TA in children under 10 years of age is made only in 2% of them. The delay in diagnosis reaches a mean of 19 months. The course of the disease is variable despite surgical and immunosuppressive treatment.

Arteritis de Takayasu tipo III en un paciente pediátrico. Reporte de caso y revisión de la literatura / Type III Takayasu's arteritis in a pediatric patient. Case report and review of the literature

La arteritis de Takayasu (AT) o «enfermedad sin pulsos» es la tercera vasculitis más frecuente en la infancia. Es crónica, idiopática, granulomatosa y afecta a vasos grandes. Afecta a las mujeres, con una relación 4:1; con una edad promedio de 26 años. Su causa es desconocida. Presentamos el caso de una niña de 7 años y 7 meses de edad, con AT tipo III de la clasificación de Numano, en fase isquémica, a la que se le inició tratamiento con glucocorticoides e inmunosupresores, así como angioplastia temprana, por la severidad del cuadro clínico. Tuvo una evolución satisfactoria. El diagnóstico de AT antes de los 10 años se realiza en el 2% de los pacientes; el retraso en el diagnóstico es en promedio de 19 meses; el curso de la enfermedad es variable a pesar del tratamiento inmunosupresor y quirúrgico (AU)

Takayasu's arteritis (TA), also known as "pulseless disease", is the third most common vasculitis in childhood. It is a chronic, idiopathic, granulomatous vasculitis that involves large vessels. It occurs most commonly in females with a 4:1 ratio over males; the average age of appearance is 26 years. Its cause is unknown. Here we report the case of a 7 year old girl, with type III TA according to the Numano classification, in the ischemic phase, treated with corticosteroids and immunosuppressive agents and early angioplasty due to the severity of the disease. The outcome was satisfactory. The diagnosis of TA in children under 10 years of age is made only in 2% of them. The delay in diagnosis reaches a mean of 19 months. The course of the disease is variable despite surgical and immunosuppressive treatment (AU)