Access to subspecialty care for patients with mobility impairment: a survey.

BACKGROUND: Adults who use wheelchairs have difficulty accessing physicians and receive less preventive care than their able-bodied counterparts. OBJECTIVE: To learn about the accessibility of medical and surgical subspecialist practices for patients with mobility impairment. DESIGN: A telephone survey was used to try to make an appointment for a fictional patient who was obese and hemiparetic, used a wheelchair, and could not self-transfer from chair to examination table. SETTING: 256 endocrinology, gynecology, orthopedic surgery, rheumatology, urology, ophthalmology, otolaryngology, and psychiatry practices in 4 U.S. cities. PATIENTS: None. MEASUREMENTS: Accessibility of the practice, reasons for lack of accessibility, and planned method of transfer of the patient to an examination table. RESULTS: Of 256 practices, 56 (22%) reported that they could not accommodate the patient, 9 (4%) reported that the building was inaccessible, 47 (18%) reported inability to transfer a patient from a wheelchair to an examination table, and 22 (9%) reported use of height-adjustable tables or a lift for transfer. Gynecology was the subspecialty with the highest rate of inaccessible practices (44%). LIMITATION: Small numbers of practices in 8 subspecialties in 4 cities and use of a fictional patient with obesity and hemiparesis limit generalizability. CONCLUSION: Many subspecialists could not accommodate a patient with mobility impairment because they could not transfer the patient to an examination table. Better awareness among providers about the requirements of the Americans with Disabilities Act and the standards of care for patients in wheelchairs is needed. PRIMARY FUNDING SOURCE: None.

Effect of exposure to injection drugs or alcohol on antigen-specific immune responses in HIV and hepatitis C virus coinfection.

BACKGROUND: Ongoing substance use is a potential confounder for immunological studies on hepatitis C virus (HCV), but there is little in the literature regarding the effects of injection drug use (IDU) or alcohol on HCV-specific immune responses. We wanted to determine whether IDU or alcohol affected immune responses in HCV-infected and human immunodeficiency virus (HIV)/HCV coinfected subjects. METHODS: Eight-four subjects with HIV/HCV and 57 with HCV were classified as either injection drug users, drinkers, or nonusers based on questionnaire results. Immune responses were studied with enzyme-linked immunosorbent spot assay for interferon (IFN)- gamma , interleukin (IL)-10, and tumor necrosis factor (TNF)- alpha against HCV proteins Core, NS3, and NS5 and recall antigens. RESULTS: Subjects with HIV/HCV, in aggregate, had significantly lower HCV-specific IFN- gamma and TNF- alpha responses than subjects with HCV. However, HIV/HCV injection drug users had HCV-specific IFN- gamma and IL-10 responses that were similar to those of HCV injection drug users and were significantly higher than in nonusers with HIV/HCV. Conversely, subjects who drank alcohol had similar immune responses to those who were abstinent, among both subjects with HIV/HCV and subjects with HCV. CONCLUSIONS: Studies that examine IFN- gamma or IL-10 immune responses in HIV/HCV-coinfected or HCV-infected persons need to consider current IDU. Alcohol, at levels consumed in this cohort, does not appear to have as much of an effect on antigen-specific immune responses.

Relationships between cellular immune responses and treatment outcomes with interferon and ribavirin in HIV/hepatitis C virus co-infection.

OBJECTIVE: To test the hypothesis that hepatitis C virus (HCV)-specific interferon (IFN)gamma immune responses are correlated with HCV virological response following treatment in subjects with HIV-1 and HCV co-infection. DESIGN: Immune responses were studied in a treatment trial comparing standard interferon alfa (IFN) to pegylated interferon alfa (PEG-IFN), each with ribavirin (R). METHODS: Using HCV antigens core, NS3 and NS5, and Candida, enzyme-linked immunosorbent spots on peripheral blood mononuclear cells measured IFNgamma and interleukin (IL)-10 production. Immunologic, virologic and clinical variables were modeled using recursive partitioning (CART) to identify factors associated with HCV virological response at week 24 (VR) and week 72 (SVR) in 108 patients. RESULTS: There were no significant differences in baseline IFNgamma immune responses and higher IL-10 to NS3 in subjects with VR versus non-responders. Subjects who had significant decreases in IL-10 responses at week 24 compared to baseline for NS3, NS5, or summed HCV responses were more likely to be VR. Using baseline immunological responses and clinical data in CART models, patients who were randomized to PEG-IFN/R and had high IL-10 responses to summed HCV proteins were more likely to be VR (73%), whereas those on IFN/R who had low IFNgamma responses to Candida were less likely to be VR (5%). The main correlate of SVR for genotype-1 subjects was maintenance of HCV-specific IFNgamma responses from baseline to week 72. CONCLUSIONS: In this cohort of subjects with HIV and HCV, a decrease in HCV-specific IL-10 responses and maintenance of IFNgamma responses during treatment with IFN were associated with week 24 or 72 virological response.

Antigen-specific immune responses and liver histology in HIV and hepatitis C coinfection.

OBJECTIVE: To test the hypothesis that antigen-specific interferon (IFN)gamma responses are correlated with milder liver disease in subjects coinfected with HIV-1 and hepatitis C virus (HCV). DESIGN: Cellular immune responses were studied in a cohort with HIV/HCV coinfection (n = 107) who underwent liver biopsy. METHODS: We measured HCV-specific and recall responses in peripheral blood mononuclear cells using IFNgamma and interleukin (IL)-10 ELISpots, and correlated these immune responses with liver histology. The relationship of immunologic, virologic and clinical variables to inflammation and fibrosis was modeled using recursive partitioning. RESULTS: There were significant negative correlations between inflammatory scores and IFNgamma production in response to the HCV proteins core, NS5 and summed HCV responses. Lower fibrosis scores were also correlated with higher IFNgamma production in response to NS5 and summed HCV proteins. Higher IFNgamma production in response to Candida was significantly associated with lower inflammatory and fibrosis scores. In multivariable models, factors associated with severe fibrosis were lower IFNgamma responses to Candida and summed HCV proteins. Factors associated with severe inflammation were detectable HIV viral load and lower HCV viral load, while predictors of mild inflammation included undetectable HIV viral load and higher IFNgamma response to Candida. CONCLUSIONS: In this cohort of subjects coinfected with HIV and HCV, antigen-specific IFNgamma responses are correlated with milder inflammation and fibrosis. Immunological responses best predicted severity of fibrosis, while clinical variables and recall antigen responses best predicted severity of inflammation.