Chikungunya Virus Infection-associated Arthralgia in Adult Jamaicans Post-outbreak / Artralgia asociada con la infección del virus de Chikunguña en jamaicanos adultos con posterioridad al brote

ABSTRACT Objective: To report demographic and self-reported clinical characteristics associated with persistent and severe arthralgia 8-12 months post-chikungunya virus (CHIKV) infection. Methods: A cross-sectional study of 306 adults who self-reported CHIKV infection was conducted. Subjects were consecutively enrolled at public primary healthcare centres in urban and rural areas in Jamaica. Adults with arthralgic conditions were compared with those who reported no arthralgia. Binary logistic regression models were used to determine demographic and self-reported clinical factors associated with severe arthralgia and persistent arthralgia. Results: Most subjects (70.3%) reported arthralgia after CHIKV outbreak (age: 47.6 ± 18.5 years). Medical consultation (36.2%) and laboratory confirmation (1.4%) were low. The prevalence of persistent and severe arthralgia in the previous month was 30.3% and 27.5%, respectively. Severe arthralgia was associated with the female gender (odds ratio (OR): 2.44; 95% confidence level (CI): 1.08, 5.52) and pre-existing arthritis (OR: 3.78; 95% CI: 1.23, 11.62). Females showed a greater likelihood of persistent arthralgia (OR: 2.18; 95% CI: 1.09, 4.39). Conclusion: Self-perceived arthralgia was an important feature 8-12 months post-CHIKV infection and has implications for the recognition and management of arthritis/rheumatic conditions.

RESUMEN Objetivo: Reportar las características clínicas demográficas y auto-reportadas asociadas con una artralgia persistente y severa de 8-12 meses tras la infección del virus de chikunguña (CHIKV). Métodos: Se llevó a cabo un estudio transversal de 306 adultos que auto-reportaron su infección de CHIKV. Los sujetos fueron alistados consecutivamente en centros públicos de atención primaria en zonas urbanas y rurales de Jamaica. Los adultos con condiciones artrálgicas fueron comparados con adultos que no reportaron artralgia alguna. Los modelos de regresión logística binaria fueron utilizados para determinar los factores clínicos demográficos y auto-reportados que se asocian con artralgia severa y artralgia persistente. Resultados: La mayoría de los sujetos (70.3%) reportaron artralgia después del brote de CHIKV (edad: 47.6 ± 18.5 años). La consulta médica (36.2%) y la confirmación del laboratorio (1.4%) fueron bajas. La prevalencia de la artralgia persistente y la severa en el mes anterior fue de 30.3%y 27.5%, respectivamente. La artralgia severa estuvo asociada al género femenino (odds-ratio (OR): 2.44; intervalo de confianza (IC): 1.08, 5.52), y artritis preexistente (OR: 3.78; 95% (IC: 1.23, 11.62). Las hembras mostraron una mayor probabilidad de artralgia persistente (OR: 2.18; 95% IC: 1.09, 4.39). Conclusión: La artralgia auto-percibida fue una característica importante de la infección post-CHIKV de 8-12 meses, y tiene implicaciones para el reconocimiento y tratamiento de la artritis y las condiciones reumáticas.

HIV TAT variants differentially influence the production of glucocerebrosidase in Sf9 cells

Gaucher disease, the most common lysosomal storage disorder, is currently treated with enzyme replacement therapy. This approach, however, is ineffective in altering the progression of neurodegeneration in type 2 and type 3 patients due to the difficulty of transferring the recombinant enzyme across the blood-brain barrier. Human immunodeficiency virus type 1 trans-activating transcriptional activator protein (HIV TAT) contains a protein transduction domain that can be added to a fusion protein partner to allow for transport of the partner across membranes. Consequently, we examined the creation, production, and secretion of fusion constructs containing glucocerebrosidase and either wild-type TAT or modified TAT in Sf9 cells. All three constructs exhibited successful expression, with wild-type TAT chimeras showing lower levels of expression than modified TAT chimeras.