hiv infections

..The development of a safe and effective vaccine against the human immunodeficiency virus type 1 (HIV-1) is critical to pandemic control...

..Antiretroviral chemoprophylaxis before exposure is a promising approach for the prevention of human immunodeficiency virus (HIV) acquisition...

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..The results provide a framework for the design of new vaccine candidates for the elicitation of bNAb responses...

..Taken together, the multiscale approach described here has uncovered multiprotein virus-host interactions that likely act in concert to facilitate the early steps of HIV-1 infection...

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..We investigated a theoretical strategy of universal voluntary HIV testing and immediate treatment with ART, and examined the conditions under which the HIV epidemic could be driven towards elimination...

..These findings reveal viral properties associated with mucosal HIV-1 transmission and a limited set of rapidly evolving adaptive mutations driven primarily, but not exclusively, by early cytotoxic T cell responses...

..Thus, rather than quantity or phenotype, the quality of the CD8(+) T-cell functional response serves as an immune correlate of HIV disease progression and a potential qualifying factor for evaluation of HIV vaccine efficacy...

..Therapy to suppress HSV-2 reduces the frequency of reactivation of HSV-2 as well as HIV-1 levels, suggesting that suppression of HSV-2 may reduce the risk of transmission of HIV-1...

..Understanding the molecular mechanisms of both Vpu-dependent and -independent mediated antagonism of BST-2 will be critical for therapeutic strategies that exploit this novel viral function...

..Despite declines in morbidity and mortality with the use of combination antiretroviral therapy, its effectiveness is limited by adverse events, problems with adherence, and resistance of the human immunodeficiency virus (HIV)...

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..These data establish a mechanism for chronic immune activation in the context of a compromised gastrointestinal mucosal surface and provide new directions for therapeutic interventions that modify the consequences of acute HIV infection...

..Our aim was to determine whether male circumcision had a protective effect against HIV infection, and to assess safety and changes in sexual behaviour related to this intervention...

..The evolving glycan shield thus represents a new mechanism contributing to HIV-1 persistence in the face of an evolving antibody repertoire...

..The global human immunodeficiency virus (HIV) infection epidemic has caused explosive increases in TB incidence and may be contributing to increases in MDR-TB prevalence...

..The optimal timing for the initiation of antiretroviral therapy in relation to tuberculosis therapy remains controversial...

..This study thus represents a comprehensive assessment of common human genetic variation in HIV-1 control in Caucasians...

..This effort illustrates the power with which RNA interference and forward genetics can be used to expose the dependencies of human pathogens such as HIV, and in so doing identify potential targets for therapy...

..The retention of patients in antiretroviral therapy (ART) programmes is an important issue in resource-limited settings. Loss to follow up can be substantial, but it is unclear what the outcomes are in patients who are lost to programmes...

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..Quantitative analysis of preseroconversion replication rates of HIV is useful for projecting the yield and predictive value of assays targeting primary HIV infection...

..This paper describes the methods, assumptions, input data, and results...

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..In this Review, we discuss recent studies on the kinetics and quality of early immune responses to HIV-1 and their implications for developing a successful preventive HIV-1 vaccine...

..We investigated antiretroviral-treatment strategies in the Children with HIV Early Antiretroviral Therapy (CHER) trial...

..We developed two prognostic models to estimate the probability of death in patients starting ART in sub-Saharan Africa...

..These included clusters of mutations in envelope that were targeted by NAbs, a few isolated sites that reverted to the consensus sequence, and bystander mutations in linkage with T cell-driven escape...

..Ecological and observational studies suggest that male circumcision reduces the risk of HIV acquisition in men. Our aim was to investigate the effect of male circumcision on HIV incidence in men...

..No study on women has yet assessed gender-based violence as a risk factor for HIV after adjustment for women's own high-risk behaviours, although these are known to be associated with experience of violence...

..Finally, we recapitulated these observations in HIV-2-infected CD4+ T-cell lines, demonstrating that tetherin antagonism and sequestration occur at physiological levels of Env expression during virus replication...

..This study highlights both the power and shortcomings of large scale loss-of-function screens in discovering host-pathogen interactions...

..Repeat screening in the third trimester is recommended in certain jurisdictions with elevated rates of HIV infection among pregnant women...

..We assessed vaccine-induced immunity and its potential contributions to infection risk...

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..To analyse the early loss of patients to antiretroviral therapy (ART) programmes in resource-limited settings...

..The average number of years remaining to be lived at age 20 years was about two-thirds of that in the general population in these countries...

..With appropriate analysis, ultra-deep pyrosequencing is a promising method for characterizing genetic diversity and detecting minor yet clinically relevant variants in biological samples with complex genetic populations...

..To describe how district-wide access to HIV/AIDS care was achieved and maintained in Thyolo District, Malawi...

..Concerns about incomplete adherence among patients living in poverty have been an important consideration in expanding the access to antiretroviral therapy in sub-Saharan Africa...

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..On CD4+ T cells, engagement of alpha4beta7 by gp120 resulted in rapid activation of LFA-1, the central integrin involved in the establishment of virological synapses, which facilitate efficient cell-to-cell spreading of HIV-1...

..The demonstration that a minority of CCR5(-/-) HSPCs can populate an infected animal with HIV-1-resistant, CCR5(-/-) progeny supports the use of ZFN-modified autologous hematopoietic stem cells as a clinical approach to treating HIV-1...

..To synthesize the evidence on the risk of HIV transmission through unprotected sexual intercourse according to viral load and treatment with combination antiretroviral therapy (ART)...

..This trial investigated whether routine toxicity and efficacy monitoring of HIV-infected patients receiving ART had an important long-term effect on clinical outcomes in Africa...

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..To estimate the proportion of all-cause adult patient attrition from antiretroviral therapy (ART) programs in service delivery settings in sub-Saharan Africa through 36 months on treatment...

..Initiation of antiretroviral therapy (ART) reduces plasma HIV-1 concentrations. We aimed to assess the effect of ART use by patients infected with HIV-1 on risk of transmission to their uninfected partners...

..In conclusion, SIV infection triggered a rapid and strong IFN-alpha response in vivo in both AGMs and RMs, with this response being efficiently controlled only in AGMs, possibly as a result of active regulatory mechanisms...

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..Durable suppression of replication of the human immunodeficiency virus (HIV) depends on the use of potent, well-tolerated antiretroviral regimens to which patients can easily adhere...

..These findings have important implications for the development of next-generation T-cell-based vaccine candidates for HIV-1...

..Thus, HIV-1 transmission does not appear to select for viruses that can preferentially utilize low levels of entry receptors...

..HIV causes substantial mortality among African children but there is limited data on how this is influenced by maternal or infant infection status and timing...

..Minor (i.e., <20% prevalence) drug-resistant human immunodeficiency virus (HIV) variants may go undetected, yet be clinically important...

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..Identification of new ways to increase access to antiretroviral therapy in Africa is an urgent priority. We assessed whether home-based HIV care was as effective as was facility-based care...

..With individual data from seven randomised mother-to-child transmission (MTCT) intervention trials, we estimate mortality in African children born to HIV-infected mothers and analyse selected risk factors...

..Greater V3 diversity was observed post-selection. This previously unreported degree of V3 loop sequence diversity has implications for viral pathogenesis, vaccine design, and the optimal use of HIV-1 CCR5 antagonists...

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..This supports the adoption of a more pro-active approach to treatment intensification and the need for caution with structured treatment interruptions...

..CONCLUSIONS: Our data confirm the association among individual pharmacokinetic parameters, genotype pattern and virological response to NFV-containing regimens...

..Contrary to other recent studies in Africa, viral resistance rarely emerged...

..Patients were genotyped for CCR5 Delta32 and the incidence of heterozygosity was lower than in the HIV-1 seronegative controls (3% compared to 19%)...

..To evaluate the safety and efficacy of a protease inhibitor sparing, quadruple therapy (Combivir + abacavir + efavirenz) in antiretroviral treatment-naive HIV-1-infected adults...

..Most studies of adherence to highly active antiretroviral therapy in children have been retrospective or cross-sectional. Factors relating to the caregiver, the child and the medication are all considered to be important for good adherence...

..We further predict that protease inhibitors have high levels of efficacy directly suppressing viral replication within the thymus, while reverse transcriptase inhibitors have low efficacy...

..92, P=0.004). CONCLUSIONS: Simplification is safe and effective, but it should be offered to patients with shorter treatment duration, and in good clinical and immunovirological conditions...

..Further studies should clarify whether this is true for other drugs of the nucleoside analogues class...

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..Thus, despite prolonged maintenance of undetectable levels of plasma HIV-1 RNA, HIV-1 DNA remains detectable in PBMC of children and may be a useful marker of further virus suppression...

..Efficient yet temporary suppression of viral replication was achieved by a lopinavir (LPV) treatment...

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..Our data suggest that relying exclusively on historical, clinical and laboratory evidence may not be sufficient to rule out a possible antiviral response when multiple drug regimens are used in this heavily pretreated patient population...

..Hyperlipidemia is observed in the absence of lipodystrophy and depends on PI exposure...

..To improve the dosing frequency and pill burden of antiretroviral therapy, we compared two once-daily dosed regimens to a twice-daily dosed regimen...

..CONCLUSIONS: In agreement with a recent clinical trial, use of initial EFV-based combination antiretroviral therapy was associated with higher rates of viral suppression than PI-based therapy in a clinical cohort...

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..Substantial redistribution of lymphocytes occurs upon the initiation of highly active antiretroviral therapy (HAART) and immune-based HIV therapies...

..The results of the study show that patients with extensive experience with NRTIs respond both virologically and immunologically during the first 48 weeks of therapy with a potent antiretroviral regimen...

..The CD4 T-cell count falls by 50% during chemotherapy and this will help to identify patients who require opportunistic infection prophylaxis during chemotherapy...

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..003). CONCLUSION: Antiretroviral treatment guided prospectively by PRT led to the increased use of "active" antiretroviral agents and was associated with a significantly better virological response...

..This serial accumulation of mutations is likely to exhaust future drug options..

..To compare the efficacy and safety of a triple nucleoside combination to a protease inhibitor-containing triple regimen as first-line antiretroviral therapy (ART) in HIV-1-infected patients...

..The findings suggest, immunological recovery notwithstanding, virological failure is independent of drug-resistant mutations and consequent possible changes in viral fitness...

..1-74.5%). The HIV strains of patients failing HAART showed a progressive impaired replication capacity. In patients failing HAART the impaired replication capacity of HIV strains could justify the persistence of an immune recovery...

..Computerized query of the hospital information system proved to be a powerful tool for the identification of study patients in a real-world clinic environment...

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..The low numbers of responders and the transient nature of the anti-HIV-1 immune responses do not favour the auto-vaccination hypothesis...

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..To assess the antiviral efficacy and safety of switching from a protease inhibitor (PI) to nevirapine in patients with long-term HIV-1 RNA suppression on PI-containing regimens, and to assess its influence in the adherence to treatment...

..5% of the patients. The results indicate successful suppression of HIV-1 under HAART for extended time periods, indistinguishable for patients in which evidence of virus evolution could or could not be documented...

..CONCLUSION: The lopinavir/ritonavir-efavirenz combination is associated with a high rate of virologic response and should be compared with more classic NRTI-containing regimens in randomized and controlled clinical trials...

..Median increase above baseline in CD4(+) cell count was similar (q.d. group, +144 cells/mm(3); b.i.d. group, +146 cells/mm(3)), and the incidences of adverse events, disease progression, and HIV-associated conditions were comparable...

..The maintenance of resistance genotyping programs for HIV-1 failing patients is important to the management of ARV therapies and to attempt and monitor the HIV-1 subtype prevalence in Brazil...

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..CSF concentrations of lopinavir were low, but probably sufficient to have a virological effect...

..Results of the proposed study will guide the allocation of HIV prevention resources in establishing brief and effective HIV risk reduction counseling services for populations vulnerable to HIV infection. ..

..These studies may will reveal novel apoptotic regulatory mechanisms and provide new avenues for therapeutic approaches to promote neuronal survival and prevent debilitating neurological diseases, such as Parkinson's disease. ..

..This already-existing cohort with access to ART provides a unique opportunity to answer questions that have significant public health implications with a relatively small investment of additional resources. ..

..As many as one in five South Africans is HIV positive and there are an estimated 1,500 new HIV infections in South Africa each day...

..As many as one in five South Africans is HIV positive and there are an estimated 1,500 new HIV infections in South Africa each day...

..As many as one in five South Africans is HIV positive and there are an estimated 1,500 new HIV infections in South Africa each day...

..Effective strategies for improving adherence in patients with poor health literacy must be tailored to achieve optimal adherence and therefore viral suppression. ..

..If successful, the experimental intervention could be readily implemented as a community-based program by AIDS Service Organizations, health centers, and community-based Internet access providers. ..

..As many as one in five South Africans is HIV positive and there are an estimated 1,500 new HIV infections in South Africa each day...

..As many as one in five South Africans is HIV positive and there are an estimated 1,600 new HIV infections in South Africa each day...

..Trainees will work with a community based AIDS service organization to conduct a field study that will serve as a rich training experience for them and will directly benefit the partner organization. ..

..Effective strategies for improving adherence in patients with poor health literacy must be tailored to achieve optimal adherence and therefore viral suppression. ..

..If shown effective, the intervention model will have implications for community and clinical services for people living with HIV-AIDS. ..

..Results of the proposed research will provide critical information about improving HIV treatment adherence with low-literacy populations that is needed prior to conducting larger and more expensive clinical trials. ..

..As many as one in five South Africans is HIV positive and there are an estimated 1,500 new HIV infections in South Africa each day...

..As many as one in five South Africans is HIV positive and there are an estimated 1,500 new HIV infections in South Africa each day...

..The SWRD Program will be directed by Dr. Nabila El-Bassel and co-directed by Drs. Steven Schinke and Mary McKay, all CUSSW faculty with strong programs of federally funded research related to substance abuse and HIV. ..

..The findings from this study will inform future prevention efforts to stem heterosexual transmission of HIV and STIs in Central Asia among male migrant workers. ..

..Dr. E1-Bassel, the Social Intervention Group Behavioral Studies at the NY State Psychiatric the study: Dr. Steinglass from the Ackerman Angeles, Dr. Sharp from St. Luke's Hospital tt the University of Buffalo. ..

..The findings will contribute significantly to an understanding of HIV/STD risk reduction among African American serodiscordant couples, a population at high risk of transmission. ..

..The findings will contribute significantly to the field of HIV/STI risk reduction by developing and testing an intervention with African American couples that can be offered to HIV clinics and CBOs. ..

..The findings from this study will inform future prevention efforts to stem heterosexual transmission of HIV and STIs in Central Asia among male migrant workers. ..

..Data from the proposed study will help inform assessment, treatment and referral protocols to reduce partner violence and HIV-risk behaviors among men and women in MMTPs. ..

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..The Case CFAR is proactive in its efforts to ensure inclusion of minority and female researchers in all aspects of Conference planning and attendance. ..

..The number of annual reported HIV infections in China has increased steadily...

..By understanding how Mitf activates ostoeclast specific genes, drug targets may be suggested that will lead to therapies to control the differentiation and activation of osteoclasts. ..

..We expect that the results of these studies will provide insights into mechanisms of HIV acquisition across mucosal surfaces that will guide the further development of topical strategies to prevent HIV transmission. ..

..Dr. Beckwith will be mentored by Dr. Timothy P. Flanigan from Brown Medical School in Providence, Rl. Through this award, Dr. Beckwith aims to advance the delivery of HIV testing and prevention services to persons incarcerated in jail. ..

..Thus, an additional aim of our group is to be active participants in three of the PTN science working groups-Microbicides, Behavioral Intervention, and Substance Related Transmission. ..

..The study will explain the mechanisms of electron transfer and dithiol/disulfide oxidoreduction catalyzed by putidaredoxin reductase and will provide an insight into the mechanism and function of apoptosis inducing factor. ..

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..These data will prepare the team to conduct a randomized controlled trial across different levels of health care providers in China. ..

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..The CWRU ACTU will also bring to the ACTG the expertise of its faculty in the laboratory monitoring of HIV disease through its Immunology Service Laboratory and other research laboratories within the institution. ..

..In settings such as Jakarta, data regarding the costs and benefits of integrated drug and risk counseling have critical public heath relevance. ..

..The results of this project will contribute to the development of effective HIV/STD risk-reduction programs for inner-city Black ..

..We will explore the biological relevance of observed differences in these phenotypic properties to develop potential biological models for selection during HIV-1 transmission. ..