Publications

One solution for reducing tobacco use is to expand health insurance coverage for tobacco dependence treatments (TDTs), but the public demand for a coverage mandate is unknown. This study finds that demand for coverage of TDTs among a random sample of adult Californians with employer-sponsored health insurance is strong, with 62% indicating that health insurers should be required to offer coverage as part of their standard plans and a majority (56%) indicating a willingness to pay $3 more for their annual health insurance premium to finance cessation coverage. Compared to never smokers, current and former smokers are no more likely to support a benefit mandate to require coverage of cessation treatments, but the adjusted odds are approximately three times greater that current and former smokers are willing to pay $3 more toward their annual premium to finance cessation coverage. Liberals had higher adjusted odds of supporting a benefit mandate and of being willing to pay a higher premium compared to conservatives. Non-whites had higher adjusted odds of supporting a mandate compared to whites, with no differences by race/ethnicity in willingness to pay a higher premium. There were no differences in preferences for a benefit mandate or willingness to pay a higher premium as a function of age, gender or income. These findings have important policy implications for a state health insurance mandate to cover tobacco dependence treatments.

Despite high rates of HIV among male injection drug users, the sexual behaviors of at-risk women in Iran remain unknown. A questionnaire on HIV knowledge and risk behavior was administered in a Tehran nongovernmental organization targeting runaways and other women seeking safe haven. Half (total N = 50) were less than 24 years old; baseline HIV knowledge was high. The few who acknowledged using illicit substances said they used "frequently." Nonresponse rates to questions regarding sexual behavior were high (12 of 50). Half admitted a history of sexual activity; 40% of those reported their first sexual contact with someone other than their husband; three people had multiple partners. Three women reported a history of rape. Zero (97.5% one-sided confidence interval [CI] = 0, 0.17) of 35 women tested positive for HIV or syphilis. This study documents the existence of sexual behavior in a population of Iranian women, represents one of the first attempts at sexual research in the Iranian context, and highlights challenges in surveying this vulnerable group.

Cardiovascular disease (CVD) remains the leading cause of death in the developed world. In the United States alone, cardiovascular disease accounts for nearly 40% of deaths, at an estimated annual cost of at least US $430 billion. Notable, racial/ethnic differences in morbidity and mortality have been observed; in the United States, African Americans have the highest age-adjusted death rate from CVD, followed by Whites, Hispanics, and Asians. The underlying basis for the observed racial/ethnic disparities in CVD morbidity and mortality is likely multifactorial. Although hyperlipidemia screening and treatment has proven to be one of the most effective strategies for reducing CVD burden in the US population, it often fails to identify a substantial proportion of persons at high risk for CVD-related events. Elevations in markers of inflammation and thrombosis such as high sensitivity C-reactive protein, soluble intercellular adhesion molecule, homocysteine, and fibrinogen are also associated with increased CVD risk. However, data relating markers of inflammation and hemostasis to CVD principally come from White populations, little data are available across racial/ethnic groups. A range of barriers exist related to ethnic minority subject participation in research studies in the United States. If we are to better understand the racial differences in cardiovascular risk, these barriers must be overcome.

To respond to the HIV/AIDS epidemic in China, the National Center for AIDS/STD Control and Prevention established the Division of Treatment and Care in late 2001. The pilot for the National Free ART Program began in Henan Province in 2002, and the program fully began in 2003. Treatment efforts initially focused on patients infected through illicit blood and plasma donation in the mid-1990s and subsequently expanded to include HIV-infected injection drug users, commercial sex workers, pregnant women, and children. The National Free ART Database was established in late 2004, and includes data on current patients and those treated before 2004. Over 31 000 adult and pediatric patients have been treated thus far. Challenges for the program include integration of drug treatment services with ART, an under-resourced health care system, co-infections, stigma, discrimination, drug resistance, and procurement of second-line ART. The merging of national treatment and care, epidemiologic, and drug resistance databases will be critical for a better understanding of the epidemic, for earlier identification of patients requiring ART, and for improved patient follow-up. The Free ART Program has made considerable progress in providing the necessary care and treatment for HIV-infected people in China and has strong government support for continued improvement and expansion.

The prevalence of methicillin-resistant Staphylococcus aureus (MRSA) is characterized by variations (sometimes extreme) by country and geographic region. The conventional association of MRSA with healthcare settings has been upset by the emergence of community-associated MRSA infections in many areas. With this surge in MRSA comes a renewed interest in alternative agents to vancomycin for treatment of MRSA infections, including older drugs, such as clindamycin, doxycycline and trimethoprim- sulfamethoxazole. Newer agents, such as linezolid and daptomycin, are aiming to improve on the poor cure rates found with vancomycin in serious MRSA infections, but definitive studies showing superiority of these drugs are not yet available. Finally, the drug-development pipeline contains a number of agents for the treatment of MRSA infections, including enhanced glycopeptides (dalbavancin, oritavancin and telavancin) and anti-MRSA cephalosporins (ceftobiprole). As MRSA becomes the 'new normal' in many areas, clinicians will have to sort out the proper role of a dozen or more anti-MRSA drugs.

BACKGROUND

There is growing evidence for the role of oxidative damage in chronic diseases. Although ozone (O3) is an oxidant pollutant to which many people are exposed, few studies have examined whether O3 induces oxidative stress in humans.

OBJECTIVES

This study was designed to assess the effect of short-and long-term O(3) exposures on biomarkers of oxidative stress in healthy individuals.

METHODS

Biomarkers of lipid peroxidation, 8-isoprostane (8-iso-PGF), and antioxidant capacity ferric reducing ability of plasma (FRAP) were analyzed in two groups of healthy college students with broad ranges of ambient O3 exposure during their lifetimes and previous summer recess either in Los Angeles (LA, n = 59) or the San Francisco Bay Area (SF, n = 61).

RESULTS

Estimated 2-week, 1-month, and lifetime O3 exposures were significantly correlated with elevated 8-iso-PGF. Elevated summertime exposures resulted in the LA group having higher levels of 8-iso-PGF than the SF group (p = 0.02). Within each location, males and females had similar 8-iso-PGF. No regional difference in FRAP was observed, with significantly higher FRAP in males in both groups (SF: p = 0.002; LA: p = 0.004). An exposure chamber substudy (n = 15) also showed a significant increase in 8-iso-PGF as well as an inhibition of FRAP immediately after a 4-hr exposure to 200 ppb O3, with near normalization by 18 hr in both biomarkers.

CONCLUSIONS

Long-term exposure to O3 is associated with elevated 8-iso-PGF, which suggests that 8-iso-PGF is a good biomarker of oxidative damage related to air pollution.