Publications

OBJECTIVE

This research aimed to characterize HIV testing rates among Medicaid recipients with severe mental illness who received public specialty mental health services.

METHODS

This retrospective cohort study examined California Medicaid records from October 1, 2010, to September 30, 2011 (N=56,895). Study participants were between age 18 and 67, utilized specialty mental health care services, were prescribed antipsychotic medications, and were not dually eligible for Medicare. Adjusted Poisson regression models were used to estimate the overall effects of predictor variables on HIV testing prevalence.

RESULTS

During the study period, 6.7% of people with severe mental illness received HIV testing. Men were 32% less likely to be tested for HIV than women (p<.001). Compared with whites, Asians/Pacific Islanders were 53% less likely and blacks were 82% more likely to be tested (p<.001). Those with comorbid drug or alcohol use disorders were more likely to be tested than those without such disorders (p<.001). Utilization of nonpsychiatric medical care was the strongest predictor of HIV testing (p<.001).

CONCLUSIONS

Most adults with severe mental illness receiving public specialty mental health services were not tested for HIV during a one-year period. Public health administrators must prioritize HIV testing for early identification of HIV infection and prevention of HIV transmission.

Low-grade, chronic inflammation has been associated with many diseases of aging, but the mechanisms responsible for producing this inflammation remain unclear. Inflammasomes can drive chronic inflammation in the context of an infectious disease or cellular stress, and they trigger the maturation of interleukin-1β (IL-1β). Here we find that the expression of specific inflammasome gene modules stratifies older individuals into two extremes: those with constitutive expression of IL-1β, nucleotide metabolism dysfunction, elevated oxidative stress, high rates of hypertension and arterial stiffness; and those without constitutive expression of IL-1β, who lack these characteristics. Adenine and N-acetylcytidine, nucleotide-derived metabolites that are detectable in the blood of the former group, prime and activate the NLRC4 inflammasome, induce the production of IL-1β, activate platelets and neutrophils and elevate blood pressure in mice. In individuals over 85 years of age, the elevated expression of inflammasome gene modules was associated with all-cause mortality. Thus, targeting inflammasome components may ameliorate chronic inflammation and various other age-associated conditions.