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Somlai AM, Heckman TG, Kelly JA, Mulry GW, Multhauf KE. The response of religious congregations to the spiritual needs of people living with HIV/AIDS. JOURNAL OF PASTORAL CARE 1999; 51:415-26. [PMID: 10178810 DOI: 10.1177/002234099705100405] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Investigates the perceptions and responses of members of five diverse religious congregations to the spiritual needs of people living with AIDS, the impact of AIDS on membership participation, and the beliefs held by different congregations regarding AIDS. Evaluates and compares the AIDS-related perceptions of 204 participants in five congregations (Buddhists, Catholic, Fundamental Christians, Protestants, and Unitarians). Results indicated that congregations differed in how their members responded to the spiritual needs of people living with HIV/AIDS, the level of influence AIDS had on membership participation in formal religions, and whether AIDS was seen as the result of sinful behavior or divine retribution. Concludes that the congregational differences appeared consistent with the core beliefs of the faith communities. Suggests that clergy and congregations need to take specific steps to provide spiritual support to people living with HIV/AIDS consistent with their history of caregiving to all people regardless of the crisis situation.
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Nicholas RO, Berry V, Hunter PA, Kelly JA. The antifungal activity of mupirocin. J Antimicrob Chemother 1999; 43:579-82. [PMID: 10350391 DOI: 10.1093/jac/43.4.579] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The antibacterial agent mupirocin (pseudomonic acid A) is used as a topical agent in the treatment of superficial infections by Gram-positive bacteria, particularly Staphylococcus aureus. However, we demonstrate here that the compound also inhibits the growth of a number of pathogenic fungi in vitro, including a range of dermatophytes and Pityrosporum spp. It inhibited the incorporation of amino acids and precursors of RNA, but not that of acetate, by Trichophyton mentagrophytes. It also inhibited the isoleucyl-tRNA synthetase from Candida albicans, indicating a mechanism of action similar to that in bacteria. When administered topically, mupirocin was efficacious in a T. mentagrophytes ringworm model in guinea pigs. These results suggest that mupirocin could have clinical utility for superficial infections caused by dermatophytes.
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DiFranceisco W, Kelly JA, Otto-Salaj L, McAuliffe TL, Somlai AM, Hackl K, Heckman TG, Holtgrave DR, Rompa DJ. Factors influencing attitudes within AIDS service organizations toward the use of research-based HIV prevention interventions. AIDS EDUCATION AND PREVENTION : OFFICIAL PUBLICATION OF THE INTERNATIONAL SOCIETY FOR AIDS EDUCATION 1999; 11:72-86. [PMID: 10070591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Although the efficacy of small-group, risk reduction interventions based on cognitive behavioral principles has been widely documented in HIV behavioral research literature, little is known about how AIDS service organizations (ASOs) view these research-based models. From a nationwide sample of 77 ASOs, this study assessed factors influencing attitudes of prevention program directors and frontline staff toward research-based interventions. Characteristics of individual respondents as well as organizational characteristics of the ASO itself were used to predict perceived benefits of adopting this type of intervention, perceived efficacy (confidence) in the ASO's ability to implement it, and perceived barriers to adoption. Findings revealed uniformly positive perceptions of benefits among respondents from ASOs of different sizes and organizational experiences, although directors held more favorable evaluations than frontline staff. Respondents from ASOs that were larger, had previously delivered group or workshop interventions, or had received outside technical assistance in the past expressed more confidence in the ability of their ASO to implement the intervention. On the other hand, older and more highly education individuals had less confidence in their organization's ability to implement the model. Resource constraints (money, staff, and time) were the most common barriers cited by the respondents. Overall, higher organizational role and longer tenure at an ASO were associated with the perception of more barriers to adopting science-based interventions. Respondents from ASOs with a history of receiving technical assistance reported fewer perceived barriers. The successful dissemination of HIV prevention models from the research arena to the service arena will require mechanisms to provide appropriate funding and technical assistance, particularly to smaller organizations. Mindful of the resource constraints faced by ASOs, researchers can facilitate this process by attempting to develop interventions that are less resource- and time-consuming than current models.
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Heckman TG, Kelly JA, Bogart LM, Kalichman SC, Rompa DJ. HIV risk differences between African-American and white men who have sex with men. J Natl Med Assoc 1999; 91:92-100. [PMID: 10083778 PMCID: PMC2608406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Abstract
African-American men who have sex with men remain at disproportionately greater risk for contracting human immunodeficiency virus (HIV) infection. While high HIV seroincidence has been documented among homosexual African-American men, behavioral research has rarely studied the HIV risk issues confronting these men. This study assessed a sample of 253 men who have sex with men to determine if African-American (n = 79) and white (n = 174) men report different rates of HIV risk behaviors and differ in characteristics indicative of risk. African-American men who have sex with men were more likely to be HIV-seropositive, to report past treatment for gonorrhea and syphilis, and to have a recent unprotected sex partner known or believed to be HIV-seropositive. Multivariate analyses of covariance, controlling for group differences in age, education, and income, revealed that African-American men who have sex with men were less open about their sexual orientation, scored lower in HIV risk behavior knowledge, had more female sexual partners, and more frequently used cocaine in association with sex relative to white men who have sex with men. Human immunodeficiency virus prevention programs tailored to the needs and risk issues of African-American men who have sex with men are needed.
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Kelly JA, Otto-Salaj LL, Sikkema KJ, Pinkerton SD, Bloom FR. Implications of HIV treatment advances for behavioral research on AIDS: protease inhibitors and new challenges in HIV secondary prevention. Health Psychol 1998. [PMID: 9697940 DOI: 10.1037//0278-6133.17.4.310] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Protease inhibitor combination therapies can reduce HIV viral load, improve immune system functioning, and decrease mortality from AIDS. These medical developments raise a host of critical new issues for behavioral research on HIV/AIDS. This article reviews developments in HIV combination therapy regimens and behavioral factors involved in these regimens and focuses on four key behavioral research areas: (a) the development of interventions to promote treatment adherence, (b) psychological coping with HIV/AIDS in the context of new treatments for the disease, (c) the possible influence of treatment on continued risk behavior, and (d) behavioral research in HIV prevention and care policy areas. Advances in HIV medical care have created important new opportunities for health psychologists to contribute to the well-being of persons with HIV/AIDS.
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Heckman TG, Somlai AM, Kalichman SC, Franzoi SL, Kelly JA. Psychosocial differences between urban and rural people living with HIV/AIDS. J Rural Health 1998; 14:138-45. [PMID: 9715002 DOI: 10.1111/j.1748-0361.1998.tb00615.x] [Citation(s) in RCA: 77] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
During the past decade, many investigations have examined the life circumstances of people living with HIV disease. Most of these studies, however, have focused on HIV-infected people in large metropolitan areas. This study compares the psychosocial profiles of rural and urban people living with HIV disease. Anonymous, self-administered surveys were completed by 276 people with HIV/AIDS in a Midwestern state. The assessment instrument measured respondents' quality of life, perceptions of loneliness, social support, experiences with AIDS-related discrimination, access to services, and illness-related coping strategies. Compared with their urban counterparts, rural people with HIV reported a significantly lower satisfaction with life, lower perceptions of social support from family members and friends, reduced access to medical and mental health care, elevated levels of loneliness, more community stigma, heightened personal fear that their HIV serostatus would be learned by others, and more maladaptive coping strategies. Programs that are designed to improve the life circumstances of people with HIV disease in rural areas--particularly those that facilitate access to adequate health care, increase perceptions of social support, and improve illness-related coping--are urgently needed.
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Pinkerton SD, Holtgrave DR, DiFranceisco WJ, Stevenson LY, Kelly JA. Cost-effectiveness of a community-level HIV risk reduction intervention. Am J Public Health 1998; 88:1239-42. [PMID: 9702159 PMCID: PMC1508314 DOI: 10.2105/ajph.88.8.1239] [Citation(s) in RCA: 70] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
OBJECTIVES The authors evaluated the cost-effectiveness of a community-level HIV prevention intervention that used peer leaders to endorse risk reduction among gay men. METHODS A mathematical model of HIV transmission was used to translate reported changes in sexual behavior into an estimate of the number of HIV infections averted. RESULTS The intervention cost $17,150, or about $65,000 per infection averted, and was therefore cost-saving, even under very conservative modeling assumptions. CONCLUSIONS For this intervention, the cost of HIV prevention was more than offset by savings in averted future medical care costs. Community-level interventions to prevent HIV transmission that use existing social networks can be highly cost-effective.
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Kelly JA, Hoffman RG, Rompa D, Gray M. Protease inhibitor combination therapies and perceptions of gay men regarding AIDS severity and the need to maintain safer sex. AIDS 1998; 12:F91-5. [PMID: 9677158 DOI: 10.1097/00002030-199810000-00001] [Citation(s) in RCA: 166] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND Advances in the treatment of HIV disease with protease inhibitor combination therapies have been widely documented in the media. OBJECTIVES To investigate perceptions concerning the severity of HIV/AIDS and the need to maintain safer sex practices in the light of recent HIV treatment advances. METHODS A survey eliciting demographic characteristics, HIV serostatus and treatment information, and HIV/AIDS severity and safer sex perceptions was administered to a community sample of 379 homo-/bisexual men who reported awareness of combination therapy regimens. RESULTS Ten per cent of all respondents agreed or strongly agreed with the statement that 'AIDS is now very nearly cured' and 13% felt that the threat of AIDS is less serious than in the past. HIV-positive men were more likely to perceive AIDS as a less serious threat or as very nearly cured. Overall, 8% of men in the sample indicated that they practice safer sex less often since new AIDS treatments came along; 18% of HIV-positive men on combination therapy regimens said they practice safer sex less frequently since treatments have advanced. Regardless of serostatus, nearly 20% of men indicated they would stop practicing safer sex if an AIDS cure was announced. CONCLUSION It is essential to integrate behavior change counseling into HIV treatment programs and to temper optimism concerning treatment advances with recognition that the threat of HIV/AIDS remains great.
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Kelly JA, Kalichman SC. Reinforcement value of unsafe sex as a predictor of condom use and continued HIV/AIDS risk behavior among gay and bisexual men. Psychol Health 1998; 17:328-35. [PMID: 9697942 DOI: 10.1037/0278-6133.17.4.328] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The pleasure or reinforcement value of high-risk sex may be an important influence on success in risk reduction efforts. Seronegative gay and bisexual men (N = 297) completed measures assessing their unprotected and safer sex practices, as well as measures of cognitive and skill factors and a measure assessing the subjective reinforcement value of unprotected anal intercourse. Regression analyses showed that the reinforcement value of unprotected anal intercourse accounted for variance in predicting levels of condom use above that that could be accounted for by factors such as knowledge, behavior change intentions, perceived vulnerability, condom attitudes, and sexual communication skills. Only reinforcement value of unprotected sex and substance use significantly predicted how frequently participants engaged in high-risk sex. Increased attention to the valence of sexual reinforcers will improve HIV risk reduction models and enhance AIDS prevention efforts.
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Kelly JA, Otto-Salaj LL, Sikkema KJ, Pinkerton SD, Bloom FR. Implications of HIV treatment advances for behavioral research on AIDS: protease inhibitors and new challenges in HIV secondary prevention. Health Psychol 1998; 17:310-9. [PMID: 9697940 DOI: 10.1037/0278-6133.17.4.310] [Citation(s) in RCA: 86] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Protease inhibitor combination therapies can reduce HIV viral load, improve immune system functioning, and decrease mortality from AIDS. These medical developments raise a host of critical new issues for behavioral research on HIV/AIDS. This article reviews developments in HIV combination therapy regimens and behavioral factors involved in these regimens and focuses on four key behavioral research areas: (a) the development of interventions to promote treatment adherence, (b) psychological coping with HIV/AIDS in the context of new treatments for the disease, (c) the possible influence of treatment on continued risk behavior, and (d) behavioral research in HIV prevention and care policy areas. Advances in HIV medical care have created important new opportunities for health psychologists to contribute to the well-being of persons with HIV/AIDS.
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DiFranceisco W, Kelly JA, Sikkema KJ, Somlai AM, Murphy DA, Stevenson LY. Differences between completers and early dropouts from 2 HIV intervention trials: a health belief approach to understanding prevention program attrition. Am J Public Health 1998; 88:1068-73. [PMID: 9663156 PMCID: PMC1508254 DOI: 10.2105/ajph.88.7.1068] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
OBJECTIVES The purpose of this study was to identify factors predicting program attrition among participants in human immunodeficiency virus (HIV) risk reduction trials. METHODS Participants were gay/bisexual men and severely mentally ill adults recruited to take part in HIV risk reduction small-group interventions. Program completers were compared with participants who were assessed at baseline but then failed to attend any sessions. The health belief model provided a framework for selection of possible predictors of program attrition. RESULTS Younger age was associated with early dropout in both samples. Other predictors among gay/bisexual men included involvement in an exclusive sexual relationship, minority ethnicity, injection drug use, and higher perceived severity of AIDS. Severely mentally ill dropouts were less knowledgeable about safer sex methods and more likely to hold positive outcome expectancies for condom use. CONCLUSIONS Evaluation of intervention effectiveness among vulnerable population segments is threatened if there is selective attrition. Better methods are needed to attract and maintain participation in HIV prevention programs. Alternatively, wider application of "intention to treat" analysis of intervention outcomes is recommended to minimize selection bias due to program dropout.
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88
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Heckman TG, Somlai AM, Peters J, Walker J, Otto-Salaj L, Galdabini CA, Kelly JA. Barriers to care among persons living with HIV/AIDS in urban and rural areas. AIDS Care 1998; 10:365-75. [PMID: 9828979 DOI: 10.1080/713612410] [Citation(s) in RCA: 183] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
People living with HIV disease, particularly those in small towns and rural areas, face many barriers that prevent them from receiving important life-care services. We developed the Barriers to Care Scale (BACS) to delineate the problem severity of factors that impede care and service provision among a sample of 226 men and women living with HIV disease in a single midwestern state. Both urban and rural respondents indicated that major barriers to life-care services included the lack of knowledge about HIV among citizens in the community, insufficient personal financial resources, the lack of employment opportunities for people living with HIV, and the lack of supportive and understanding work environments. Rural persons living with HIV disease, compared to their urban counterparts, assigned significantly higher problem severity ratings to the following barriers: the need to travel long distances to medical facilities and personnel; a shortage of adequately trained medical and mental health professionals; a lack of personal or public transportation; and community residents' stigma toward people living with HIV. The large number of barriers to care identified in the present study indicates that innovative programmes designed to remove these barriers and improve the life quality of rural persons living with HIV are urgently needed.
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Otto-Salaj LL, Heckman TG, Stevenson LY, Kelly JA. Patterns, predictors and gender differences in HIV risk among severely mentally ill men and women. Community Ment Health J 1998; 34:175-90. [PMID: 9620162 DOI: 10.1023/a:1018745119578] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
A number of studies have established high human immunodeficiency virus (HIV) seroprevalence among severely mentally ill men and women living in large urban areas. Much less research has characterized the patterns of risk behavior that contribute to elevated vulnerability to HIV/AIDS among the mentally ill, as well as psychological, situational, and gender-related influences on risk in this population. One-hundred thirty-four severely mentally ill men and women who reported sexual activity outside of an exclusive relationship or with high-risk partners completed an extensive measure battery concerning HIV risk. Knowledge about HIV was low and sexual risk behavior levels were high in the sample. On average, condoms were used in only 32% of intercourse occasions in the past three months, and nearly one-half of participants reported multiple sexual partners in the same period. Patterns common in the sample were sex associated with substance use; coerced sex, bartering sex for money, food, clothes, or a place to stay; and sex with injection drug user partners. Factors predictive of greater risk were being female, presently being in a relationship, perceiving oneself to be at risk, high levels of alcohol use, and weak risk reduction behavioral intentions. Mental health programs serving severely mentally ill men and women are reaching a population at elevated risk for contracting HIV infection, and can serve as a venue for targeted HIV prevention interventions.
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Abstract
Although some individuals are able to cope well with the challenges posed by HIV and AIDS, others experience psychological difficulties. This article reviews factors that facilitate or hinder successful coping with HIV including preexisting psychological functioning, medical health status, quality and adequacy of social support, stress-and-coping style, and perceived expected benefits of treatment. The article reviews studies evaluating the effects of group psychotherapy intervention for persons living with HIV. The article then describes clinical issues encountered in therapy groups for persons with HIV. These clinical issues include the presence of coexisting problems unrelated to HIV/AIDS, disclosure of HIV-positive serostatus to others, making changes in transmission-risk-behavior practices, AIDS-related bereavement and caregiving stress, establishing social supports, adhering to medical care regimens, and developing a positive self-identity as a person living with HIV. Practical considerations of group therapy for HIV-positive clients are also described.
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Sikkema KJ, Heckman TG, Kelly JA. HIV risk behaviors among inner-city African American women. The Community Housing AIDS Prevention Study Group. WOMEN'S HEALTH (HILLSDALE, N.J.) 1998; 3:349-66. [PMID: 9426500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
This study examined the prevalence and predictors of HIV risk behaviors among a sample of 875 low-income, African American women residents of inner-city housing developments. The women completed an anonymous questionnaire that revealed that one third of them were at high risk for HIV either because they had multiple partners or because of the high-risk behaviors of their regular partner. HIV risk was highest among women who accurately perceived themselves to be at increased HIV risk, reported weak behavioral intentions to reduce risk, and held stronger beliefs about psychosocial barriers to condom use. Women at high risk were also younger, reported higher rates of substance use, and indicated that their housing development lacked social cohesiveness. These findings suggest that HIV prevention efforts for this population should focus on strengthening women's risk reduction behavioral intentions and self-efficacy through skill development, overcoming psychosocial barriers to condom use, managing the risk related to substance use, and incorporating approaches that take into account the social, psychological, and relationship barriers to change among economically impoverished African American women.
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Somlai AM, Kelly JA, Wagstaff DA, Whitson DP. Patterns, predictors, and situational contexts of HIV risk behaviors among homeless men and women. SOCIAL WORK 1998; 43:7-20. [PMID: 9465788 DOI: 10.1093/sw/43.1.7] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
The study discussed in this article investigated psychosocial, relationship, and situational factors associated with HIV risk in a sample of 152 inner-city homeless men and women. Although men at risk of AIDS often had multiple sexual partners, women reported fewer different partners but more frequent unprotected intercourse with them. Different factors were associated with HIV risk level among men and women. In men, high-risk patterns were associated with negative attitudes toward condom use, low levels of intentions to use condoms, high perceived risk of AIDS, and low perceived self-efficacy for avoiding risk. Women at high risk of HIV infection had greater life dissatisfaction; were less optimistic and held more fatalistic views about the future; held more negative condom attitudes; perceived themselves to be at risk; and frequently used alcohol, marijuana, and crack cocaine. HIV prevention efforts tailored to the different risk circumstances of men and women are urgently needed in social services programs for homeless people.
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Kelly JA. Scientific meeting abstracts: significance, access, and trends. BULLETIN OF THE MEDICAL LIBRARY ASSOCIATION 1998; 86:68-76. [PMID: 9549015 PMCID: PMC226328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
UNLABELLED Abstracts of scientific papers and posters that are presented at annual scientific meetings of professional societies are part of the broader category of conference literature. They are an important avenue for the dissemination of current data. While timely and succinct, these abstracts present problems such as an abbreviated peer review and incomplete bibliographic access. METHODS Seventy societies of health sciences professionals were surveyed about the publication of abstracts from their annual meetings. Nineteen frequently cited journals also were contacted about their policies on the citation of meeting abstracts. Ten databases were searched for the presence of meetings abstracts. RESULTS Ninety percent of the seventy societies publish their abstracts, with nearly half appearing in the society's journal. Seventy-seven percent of the societies supply meeting attendees with a copy of each abstract, and 43% make their abstracts available in an electronic format. Most of the journals surveyed allow meeting abstracts to be cited. Bibliographic access to these abstracts does not appear to be widespread. CONCLUSIONS Meeting abstracts play an important role in the dissemination of scientific knowledge. Bibliographic access to meeting abstracts is very limited. The trend toward making meeting abstracts available via the Internet has the potential to give a broader audience access to the information they contain.
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Pellegrini M, Grønbech-Jensen N, Kelly JA, Pfluegl GM, Yeates TO. Highly constrained multiple-copy refinement of protein crystal structures. Proteins 1997; 29:426-32. [PMID: 9408940 DOI: 10.1002/(sici)1097-0134(199712)29:4<426::aid-prot3>3.0.co;2-6] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
In the course of refining atomic protein structures, one often encounters difficulty with molecules that are unusually flexible or otherwise disordered. We approach the problem by combining two relatively recent developments: simultaneous refinement of multiple protein conformations and highly constrained refinement. A constrained Langevin dynamics refinement is tested on two proteins: neurotrophin-3 and glutamine synthetase. The method produces closer agreement between the calculated and observed scattering amplitudes than standard, single-copy, Gaussian atomic displacement parameter refinement. This is accomplished without significantly increasing the number of fitting parameters in the model. These results suggest that loop motion in proteins within a crystal lattice can be extensive and that it is poorly modeled by isotropic Gaussian distributions for each atom.
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Kelly JA, Lee CS. On-line post-capillary affinity detection of immunoglobulin G subclasses and monoclonal antibody variants for capillary electrophoresis. J Chromatogr A 1997; 790:207-14. [PMID: 9435121 DOI: 10.1016/s0021-9673(97)00760-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Human immunoglobulin G (IgG) subclasses each play a unique role in an immune response to foreign antigens. Three of the human IgG subclasses have distinct electrophoretic mobilities and are resolved by capillary zone electrophoresis (CZE). A post-capillary reactor is constructed to allow on-line addition of fragment B (of protein A)-fluorescein to form affinity complexes with separated IgG subclasses. Post-capillary affinity detection provides selective identification of human IgG subclasses and illustrates the effect of affinity binding constant on detection sensitivity. Additionally, post-capillary affinity detection for CZE facilitates rapid and selective heterogeneity analysis of mouse monoclonal anti-(human-alpha 1-antitrypsin) and anti-human follicle stimulating hormone in complex sample matrices. A constant mobility difference is observed between the antibody isoforms, likely the result of charge heterogeneity due to deamination, degradation or variation in sialic acid content.
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Kelly JA, Murphy DA, Sikkema KJ, McAuliffe TL, Roffman RA, Solomon LJ, Winett RA, Kalichman SC. Randomised, controlled, community-level HIV-prevention intervention for sexual-risk behaviour among homosexual men in US cities. Community HIV Prevention Research Collaborative. Lancet 1997; 350:1500-5. [PMID: 9388397 DOI: 10.1016/s0140-6736(97)07439-4] [Citation(s) in RCA: 373] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
BACKGROUND Community-level interventions may be helpful in population-focused HIV prevention. If members of populations at risk of HIV infection who are popular with other members can be engaged to advocate the benefits of behaviour change to peers, decreases in risk behaviour may be possible. We assessed a community-level intervention to lower the risk of HIV infection, focusing on men patronising gay bars in eight small US cities. METHODS We used a randomised community-level field design. Four cities received the intervention and four control cities did not. Participants were men from each city who went to gay bars. Men completed surveys about their sexual behaviour on entering the bars during 3-night periods at baseline and at 1-year follow-up. In the control cities, HIV educational materials were placed in the bars. In the intervention cities, we recruited popular homosexual men in the community and trained them to spread behaviour-change endorsements and recommendations to their peers through conversation. FINDINGS Population-level of risk behaviour decreased significantly in the intervention cities compared with the control cities at 1-year follow-up, after exclusion of surveys completed by transients and men with exclusive sexual partners in a city-level analysis, in the intervention cities we found a reduction in the mean frequency of unprotected anal intercourse during the previous 2 months (baseline 1.68 occasions; follow-up 0.59: p = 0.04) and an increase in the mean percentage of occasions of anal intercourse protected by condoms (baseline 44.7%; follow-up 66.8%, p = 0.02). Increased numbers of condoms taken from dispensers in intervention-city bars corroborated risk-behaviour self-reports. INTERPRETATION Popular and well-liked members of a community who systematically endorse and recommend risk-reduction behaviour can influence the sexual-risk practices of others in their social networks. Natural styles of communication, such as conversations, brought about population-level changes in risk behaviour.
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Kelly JA, McAuliffe TL, Sikkema KJ, Murphy DA, Somlai AM, Mulry G, Miller JG, Stevenson LY, Fernandez MI. Reduction in risk behavior among adults with severe mental illness who learned to advocate for HIV prevention. Psychiatr Serv 1997; 48:1283-8. [PMID: 9323747 DOI: 10.1176/ps.48.10.1283] [Citation(s) in RCA: 68] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
OBJECTIVES The study evaluated the relative impact of HIV risk reduction interventions for adults with severe mental illness living in the inner city. METHODS A total of 104 chronically mentally ill men and women were interviewed to determine sexual risk behavior over the past month and to assess HIV risk-related psychological characteristics, including their knowledge about risk behavior, their belief in their ability to change their behavior, their perceptions of peer and social norms about safer sex, their expectancies about the outcomes of these changes, and their perceived barriers to condom use. Participants were then randomly assigned to one of three conditions: a single AIDS education session, a seven-session cognitive-behavioral HIV risk reduction group intervention, or a seven-session group intervention that combined the cognitive-behavioral intervention with training to act as a risk reduction advocate to friends (advocacy training). Individuals were reinterviewed three months after completion of the intervention. RESULTS Although all participants exhibited change at follow-up in some risk-related psychological characteristics and sexual risk behaviors, participants who received the cognitive-behavioral intervention that included the advocacy training reported greater reductions in rates of unprotected sex and had fewer sexual partners at follow-up. CONCLUSIONS HIV prevention interventions that teach risk reduction skills and then encourage participants to advocate behavior change to others appear to strengthen participants' capacity to change their behavior to reduce HIV risk, even those from a disenfranchised group such as severely mentally ill adults.
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Redman PM, Kelly JA, Albright ED, Anderson PF, Mulder C, Schnell EH. Common ground: the HealthWeb project as a model for Internet collaboration. BULLETIN OF THE MEDICAL LIBRARY ASSOCIATION 1997; 85:325-30. [PMID: 9431420 PMCID: PMC226288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The establishment of the HealthWeb project by twelve health sciences libraries provides a collaborative means of organizing and enhancing access to Internet resources for the international health sciences community. The project is based on the idea that the Internet is common ground for all libraries and that through collaboration a more comprehensive, robust, and long-lasting information product can be maintained. The participants include more than seventy librarians from the health sciences libraries of the Committee on Institutional Cooperation (CIC), an academic consortium of twelve major research universities. The Greater Midwest Region of the National Network of Libraries of Medicine serves as a cosponsor. HealthWeb is an information resource that provides access to evaluated, annotated Internet resources via the World Wide Web. The project vision as well as the progress reported on its implementation may serve as a model for other collaborative Internet projects.
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Kalichman SC, Kelly JA, Rompa D. Continued high-risk sex among HIV seropositive gay and bisexual men seeking HIV prevention services. Health Psychol 1997. [PMID: 9237089 DOI: 10.1037//0278-6133.16.4.369] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The authors examined HIV risk-related sexual behaviors in an ethnically diverse sample of HIV seropositive gay and bisexual men (N = 86). Measures of sexual behavior, substance use, condom attitudes, behavior change intentions, and engagement in risk-reducing practices were completed. Thirty-nine percent of the men reported engaging in unprotected anal intercourse in the past 3 months. Unprotected anal intercourse was associated with using nitrite inhalants, sex partners who used substances before sex, and low intentions to change risk behavior. These results highlight the difficulties that people living with HIV infection face in maintaining a lifetime of safer sex and the necessity of integrating clinical and prevention interventions for these persons.
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Heckman TG, Somlai AM, Sikkema KJ, Kelly JA, Franzoi SL. Psychosocial predictors of life satisfaction among persons living with HIV infection and AIDS. J Assoc Nurses AIDS Care 1997; 8:21-30. [PMID: 9298467 DOI: 10.1016/s1055-3290(97)80026-x] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
As AIDS becomes a more chronic but manageable illness, understanding quality of life issues among persons living with this disease has become an important goal of health care researchers. However, most quality of life investigations of persons living with HIV disease have relied heavily on clinical samples (e.g., hospitalized patients, psychiatric outpatients). The present study sought to identify psychosocial predictors of general life satisfaction in a community sample of 275 persons living with HIV/AIDS in a large midwestern state. Principal components and multiple regression analyses revealed that improved physical/functional well-being, increased social support, more frequent use of active coping strategies, and fewer incidents of AIDS-related discrimination and stigma predicted higher levels of general life satisfaction (R2 = 39). Intervention strategies likely to produce higher levels of life satisfaction among persons living with HIV disease are discussed.
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