Ryan P. Lindsay

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Ribosomal RNAs (rRNAs) are encoded by multicopy families of identical genes. In Dictyostelium and other protists, the rDNA is carried on extrachromosomal palindromic elements that comprise up to 20% of the nuclear DNA. We present the sequence of the 88 kb Dictyostelium rDNA element, noting that the rRNA genes are likely to be the only transcribed regions.(More)
OBJECTIVE To better estimate the burden of toxic cigarette butt waste and create awareness of the hazardous nature of cigarette butts on two large university campuses in San Diego by organizing and conducting student cigarette butt clean-up activities. METHODS Two separate campus-wide clean-ups were conducted by student volunteers at San Diego State(More)
OBJECTIVE To determine the nutrition transition stage of female Jordanian college students. DESIGN A cross-sectional survey was used to assess eating styles, disordered eating attitudes and behaviours, body esteem and dissatisfaction, and media influence. SETTING Public and private universities in Jordan. SUBJECTS A total of 255 subjects were(More)
SETTING Tuberculosis (TB) hospital in Beijing, China. OBJECTIVE To describe perspectives of patients and physicians regarding the incorporation of smoking cessation interventions as part of TB treatment. DESIGN Seven focus groups were conducted with 39 patients and 17 physicians. RESULTS Patients were more receptive to physicians' advice to quit(More)
The purpose of this study was to examine the nutrition transition in four countries with respect to body dissatisfaction and eating styles. The target population for this study was college students in China (n=207), Japan (n=865), Jordan (n=322), and the United States (n=432). A cross-sectional survey was used to assess eating styles, disordered eating(More)
BACKGROUND Few studies assessing the relationship between active and passive smoking and tuberculosis have used biomarkers to measure smoke exposure. We sought to determine the association between active and passive smoking and LTBI in a representative sample of US adults and children. METHODS We used the 1999-2000 US National Health and Nutrition(More)
This study characterizes the prevalence of drug use among Filipino street children compared with Filipino non-street children. A cross-sectional survey was administered to 311 street children and 528 non-street children aged 13 to 17 years. Participants were enrolled through 4 nonprofit organizations and 3 high schools located in Manila, Philippines. After(More)
BACKGROUND To identify the prevalence of influenza vaccination and factors associated with vaccination among students at Brigham Young University. MATERIAL/METHODS A Cross-sectional survey of seven general education classes, size 30 to 200 students each, was conducted the week of November 25, 2007. A 34 item paper-pencil questionnaire was administered,(More)
BACKGROUND Tobacco use is highly prevalent amongst people living with HIV/AIDS (PLWHA) and has a substantial impact on morbidity and mortality. OBJECTIVES To assess the effectiveness of interventions to motivate and assist tobacco use cessation for people living with HIV/AIDS (PLWHA), and to evaluate the risks of any harms associated with those(More)
BACKGROUND Secondhand smoke (SHS) likely provides additional exposure to nicotine and toxins for smokers, but has been understudied. Our objective was to determine whether SHS exposure among smokers yields detectable differences in cotinine levels compared with unexposed smokers at the population level. METHODS Using the US National Health and Nutrition(More)
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