Health effects of ultraviolet irradiation in asthmatic children's homes.

OBJECTIVE: Centrally installed ultraviolet (UV) irradiation units were investigated to determine the potential health benefits in mold-sensitized asthmatic children. METHODS: Nineteen mold-sensitized asthmatic children 5 to 17 years of age with home central ventilation systems were enrolled in a 28-week double-blinded placebo controlled cross-over trial. Clinical outcome measurements included morning and evening peak expiratory flow rates (PEFR), PEFR variability, change in forced expiratory volume in 1 second (FEV1), change in total rhinoconjunctivitis and asthma symptom scores, change in rhinoconjunctivitis and asthma quality-of-life scores, and total (rescue and controller) medication use from baseline and between time periods. Environmental outcomes included changes in temperature, relative humidity, dew point, and indoor airborne mold and bacterial counts from baseline and between time periods. Analysis of variance (ANOVA) and regression analysis and t test were used to evaluate relationships between environmental exposure(s) and clinical outcome measurements during each study period. RESULTS: Twelve male and seven female children, average age 10.6 years, were enrolled. A statistically significant improvement in PEFR variability in subjects receiving CREON2000 units followed by placebo units was observed (p < 0.05) across both treatment periods. Within group analysis during treatment period 1, a statistically significant improvement in reduction of asthma symptom scores, the number of days with asthma symptoms, total asthma medication use, and PEFR variability were observed in subjects receiving CREON2000 units versus placebo units (p < 0.05). No significant differences were observed between the CREON 2000 and placebo units for other clinical or environmental outcome measurements. CONCLUSIONS: Central UV irradiation was effective at reducing airway hyperresponsiveness manifested as PEFR variability and some clinical symptoms. A larger cohort controlled longitudinal study to validate the clinical health effects of UV irradiation as a primary indoor environmental intervention for allergic asthma is necessary to confirm this finding.

Is burning semen syndrome a variant form of seminal plasma hypersensitivity?

OBJECTIVE: To identify an index population of Gulf War couples with burning semen syndrome and to determine whether burning semen syndrome was secondary to seminal plasma hypersensitivity. METHODS: Questionnaire surveys, screening laboratory testing for underlying medical disorders, including sexually transmitted diseases and immunoglobulin G and E immunoassays specific for seminal plasma protein, were performed. If subjects met the criteria for seminal plasma hypersensitivity, the Gulf War male veteran's seminal plasma proteins were used to desensitize his female sexual partner. RESULTS: Eighty-nine percent (188 of 211) of respondents had either personally experienced burning after contact with their own semen or had a sexual partner who had burning after contact with their semen. Asymptomatic female partners (three of five) of Gulf War veterans who exhibited specific immunoglobulin E skin and antibody responses to seminal plasma proteins responded successfully to rapid desensitization. Treatment results were confirmed by a provocative office challenge, consisting of instillation of whole seminal fluid into the female's vaginal vault and, if negative, subsequently by natural coitus. CONCLUSION: The results of this study indicate that seminal plasma hypersensitivity may present as burning semen syndrome in a subpopulation of Gulf War couples. Proper screening of Gulf War couples with clinical features of burning semen syndrome should include assessment for seminal plasma hypersensitivity reactions, as seminal plasma protein desensitization may induce remission of burning semen syndrome.