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HIV Modeling

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https://www.readbyqxmd.com/read/29161262/the-value-of-confirmatory-testing-in-early-infant-hiv-diagnosis-programmes-in-south-africa-a-cost-effectiveness-analysis
#1
Lorna Dunning, Jordan A Francke, Divya Mallampati, Rachel L MacLean, Martina Penazzato, Taige Hou, Landon Myer, Elaine J Abrams, Rochelle P Walensky, Valériane Leroy, Kenneth A Freedberg, Andrea Ciaranello
BACKGROUND: The specificity of nucleic acid amplification tests (NAATs) used for early infant diagnosis (EID) of HIV infection is <100%, leading some HIV-uninfected infants to be incorrectly identified as HIV-infected. The World Health Organization recommends that infants undergo a second NAAT to confirm any positive test result, but implementation is limited. Our objective was to determine the impact and cost-effectiveness of confirmatory HIV testing for EID programmes in South Africa...
November 2017: PLoS Medicine
https://www.readbyqxmd.com/read/29161167/depression-and-marijuana-use-among-a-sample-of-urban-females-is-stage-of-development-important
#2
Leah Floyd Campbell
BACKGROUND: Increasing rates of marijuana use and high rates of depression among females are major public health concerns and ambiguous study results suggest a complex association between the two. Inconsistent findings may be due to differences in sample characteristics (e.g., females vs. males) and result from differences in the relationship over time (i.e., across developmental stages). OBJECTIVES: Presently, the extent to which the relationship between depression and marijuana use differed for females in emerging adulthood, compared to young adult females, was examined...
November 21, 2017: Substance Use & Misuse
https://www.readbyqxmd.com/read/29160949/failure-to-initiate-hiv-treatment-in-patients-with-high-cd4-counts-evidence-from-demographic-surveillance-in-rural-kwazulu-natal
#3
Jacob Bor, Calvin Chiu, Shahira Ahmed, Ingrid Katz, Matt Fox, Sydney Rosen, Manisha Yapa, Frank Tanser, Deenan Pillay, Till Bärnighausen
OBJECTIVES: To assess the relationship between CD4 count at presentation and ART uptake and assess predictors of timely treatment initiation in rural KwaZulu-Natal, South Africa. METHODS: We used Cox Proportional Hazards models to assess the association between first CD4 count and time from first CD4 to ART initiation amongst all treatment-naïve adults presenting to the Hlabisa HIV Treatment and Care Program between August 2011 and December 2012, with CD4<350 cells...
November 21, 2017: Tropical Medicine & International Health: TM & IH
https://www.readbyqxmd.com/read/29160433/individual-and-contextual-level-factors-associated-with-client-initiated-hiv-testing
#4
Claudia Renata Dos Santos Barros, Eliana Miura Zucchi, Lilia Blima Schraiber, Ivan França
BACKGROUND: Knowing the reasons for seeking HIV testing is central for HIV prevention. Despite the availability of free HIV counseling and testing in Brazil, coverage remains lacking. METHODS: Survey of 4,760 respondents from urban areas was analyzed. Individual-level variables included sociodemographic characteristics; sexual and reproductive health; HIV/AIDS treatment knowledge and beliefs; being personally acquainted with a person with HIV/AIDS; and holding discriminatory ideas about people living with HIV...
July 2017: Revista Brasileira de Epidemiologia, Brazilian Journal of Epidemiology
https://www.readbyqxmd.com/read/29159965/improvement-in-lipids-after-switch-to-boosted-atazanavir-or-darunavir-in-children-adolescents-with-perinatally-acquired-hiv-on-older-protease-inhibitors-results-from-the-pediatric-hiv-aids-cohort-study
#5
J Jao, W Yu, K Patel, T L Miller, B Karalius, M E Geffner, L A DiMeglio, A Mirza, J S Chen, M Silio, E J McFarland, R B Van Dyke, D Jacobson
OBJECTIVES: Dyslipidaemia is common in perinatally HIV-infected (PHIV) youth receiving protease inhibitors (PIs). Few studies have evaluated longitudinal lipid changes in PHIV youth after switch to newer PIs. METHODS: We compared longitudinal changes in fasting lipids [total cholesterol (TC), triglycerides (TG), low-density lipoprotein cholesterol (LDL-C), high-density lipoprotein cholesterol (HDL-C), and TC:HDL-C ratio] in PHIV youth enrolled in the Pediatric HIV/AIDS Cohort Study (PHACS) Adolescent Master Protocol (AMP) study who switched to atazanavir/ritonavir (ATV/r)- or darunavir/ritonavir (DRV/r)-based antiretroviral therapy (ART) from an older PI-based ART and those remaining on an older PI...
November 21, 2017: HIV Medicine
https://www.readbyqxmd.com/read/29159841/trends-in-hepatitis-c-related-mortality-in-switzerland
#6
O Keiser, F Giudici, B Müllhaupt, C Junker, J-F Dufour, D Moradpour, P Bruggmann, B Terziroli, D Semela, M Brezzi, B Bertisch, J Estill, F Negro, A Spoerri
In order to accurately assess the burden of hepatitis C (HCV) and develop effective interventions, we must understand the magnitude and trends of mortality related to the disease. In the United States, HCV-related mortality is continuously increasing. We have no comparable data for Switzerland and other European countries, although a modelling study predicted a similar increase. We analysed time trends (1 January 1995-31 December 2014) in HCV-specific mortality rates in the Swiss general population using the death registry of the Swiss Federal Statistical Office (SFSO)...
November 20, 2017: Journal of Viral Hepatitis
https://www.readbyqxmd.com/read/29159762/p2y12-receptor-upregulation-in-satellite-glial-cells-is-involved-in-neuropathic-pain-induced-by-hiv-glycoprotein-120-and-2-3-dideoxycytidine
#7
Zhihua Yi, Lihui Xie, Congfa Zhou, Huilong Yuan, Shuai Ouyang, Zhi Fang, Shanhong Zhao, Tianyu Jia, Lifang Zou, Shouyu Wang, Yun Xue, Bing Wu, Yun Gao, Guilin Li, Shuangmei Liu, Hong Xu, Changshui Xu, Chunping Zhang, Shangdong Liang
The direct neurotoxicity of HIV and neurotoxicity of combination antiretroviral therapy medications both contribute to the development of neuropathic pain. Activation of satellite glial cells (SGCs) in the dorsal root ganglia (DRG) plays a crucial role in mechanical and thermal hyperalgesia. The P2Y12 receptor expressed in SGCs of the DRG is involved in pain transmission. In this study, we explored the role of the P2Y12 receptor in neuropathic pain induced by HIV envelope glycoprotein 120 (gp120) combined with ddC (2',3'-dideoxycytidine)...
November 20, 2017: Purinergic Signalling
https://www.readbyqxmd.com/read/29159595/resilience-and-physical-and-mental-well-being-in-adults-with-and-without-hiv
#8
Jennifer A McGowan, James Brown, Fiona C Lampe, Marc Lipman, Colette Smith, Alison Rodger
Resilience has been related to improved physical and mental health, and is thought to improve with age. No studies have explored the relationship between resilience, ageing with HIV, and well-being. A cross sectional observational study performed on UK HIV positive (N = 195) and HIV negative adults (N = 130). Associations of both age and 'time diagnosed with HIV' with resilience (RS-14) were assessed, and the association of resilience with depression, anxiety symptoms (PHQ-9 and GAD-7), and problems with activities of daily living (ADLs) (Euroqol 5D-3L)...
November 20, 2017: AIDS and Behavior
https://www.readbyqxmd.com/read/29159592/uptake-of-a-partner-notification-model-for-hiv-among-men-who-have-sex-with-men-and-transgender-women-in-tijuana-mexico
#9
Shirley J Semple, Heather A Pines, Steffanie A Strathdee, Alicia Harvey Vera, Gudelia Rangel, Carlos Magis-Rodriguez, Thomas L Patterson
Undiagnosed HIV infection is common among men who have sex with men (MSM) and transgender women (TW) in Latin America. We examined uptake of a partner notification (PN) model among MSM and TW in Tijuana, Mexico. Forty-six HIV-positive MSM/TW enrolled as index patients, and reported 132 MSM/TW sexual partners for PN. Of notified partners (90/132), 39% declined eligibility screening or participation, 39% tested for HIV, and of those 28% were newly-diagnosed HIV-positive. Partners who were seen by the index patient more than once in the past 4 months and those who primarily had sex with the index patient in one of their homes were more likely to be notified via PN (76% vs...
November 20, 2017: AIDS and Behavior
https://www.readbyqxmd.com/read/29158102/human-papillomavirus-types-from-infection-to-cancer-in-the-anus-according-to-sex-and-hiv-status-a-systematic-review-and-meta-analysis
#10
Chunqing Lin, Silvia Franceschi, Gary M Clifford
BACKGROUND: Data on carcinogenicity of human papillomavirus (HPV) types in the anus are needed to inform anal cancer prevention through vaccination and screening. This is particularly the case for people infected with HIV, who are at an increased risk of anal cancer. METHODS: We did a systematic review of studies published from January, 1986, to July, 2017, in MEDLINE, Embase, and the Cochrane Library on anal HPV infection, without any language restrictions. Eligible studies reported type-specific HPV prevalence by strata of cytopathological or histopathological anal diagnosis, sex, and HIV status...
November 17, 2017: Lancet Infectious Diseases
https://www.readbyqxmd.com/read/29158101/effect-of-hiv-1-low-level-viraemia-during-antiretroviral-therapy-on-treatment-outcomes-in-who-guided-south-african-treatment-programmes-a-multicentre-cohort-study
#11
Lucas E Hermans, Michelle Moorhouse, Sergio Carmona, Diederick E Grobbee, L Marije Hofstra, Douglas D Richman, Hugo A Tempelman, Willem D F Venter, Annemarie M J Wensing
BACKGROUND: Antiretroviral therapy (ART) that enables suppression of HIV replication has been successfully rolled out at large scale to HIV-positive patients in low-income and middle-income countries. WHO guidelines for these regions define failure of ART with a lenient threshold of viraemia (HIV RNA viral load ≥1000 copies per mL). We investigated the occurrence of detectable viraemia during ART below this threshold and its effect on treatment outcomes in a large South African cohort...
November 17, 2017: Lancet Infectious Diseases
https://www.readbyqxmd.com/read/29157005/quantitative-structure-activity-relationship-of-anti-hiv-integrase-and-reverse-transcriptase-inhibitors-using-norm-indexes
#12
Y Wang, F Yan, Q Jia, Y Dai, Q Wang
The development of new and safe anti-human immunodeficiency virus (anti-HIV) drugs has been an urgent task for medical research recently. Herein, based on the norm-index descriptors proposed in this work and previous works, a couple of models were developed for investigating the quantitative structure-activity/toxicity relationship (QSAR/QSTR) of dual-target anti-HIV integrase (IN) and reverse transcriptase (RT) inhibitors. The validation results proved that the developed models were stable and reliable, both in statistical quality and predictive capacity...
November 20, 2017: SAR and QSAR in Environmental Research
https://www.readbyqxmd.com/read/29155832/implementing-universal-hiv-treatment-in-a-high-hiv-prevalence-and-rural-south-african-setting-field-experiences-and-recommendations-of-health-care-providers
#13
Melanie Plazy, Delphine Perriat, Dumile Gumede, Sylvie Boyer, Deenan Pillay, François Dabis, Janet Seeley, Joanna Orne-Gliemann
BACKGROUND: We aimed to describe the field experiences and recommendations of clinic-based health care providers (HCP) regarding the implementation of universal antiretroviral therapy (ART) in rural KwaZulu-Natal, South Africa. METHODS: In Hlabisa sub-district, the local HIV programme of the Department of Health (DoH) is decentralized in 18 clinics, where ART was offered at a CD4 count ≤500 cells/μL from January 2015 to September 2016. Within the ANRS 12249 TasP trial, implemented in part of the sub-district, universal ART (no eligibility criteria) was offered in 11 mobile clinics between March 2012 and June 2016...
2017: PloS One
https://www.readbyqxmd.com/read/29155819/determinants-of-site-of-tuberculosis-disease-an-analysis-of-european-surveillance-data-from-2003-to-2014
#14
Giovanni Sotgiu, Dennis Falzon, Vahur Hollo, Csaba Ködmön, Nicolas Lefebvre, Andrei Dadu, Marieke van der Werf
BACKGROUND: We explored host-related factors associated with the site of tuberculosis (TB) disease using variables routinely collected by the 31 EU/EEA countries for national surveillance. METHODS: Logistic regression models were fitted to case-based surveillance data reported to the European Centre for Disease Prevention and Control for TB cases notified from 2003 to 2014. Missing data on HIV infection and on susceptibility to isoniazid and rifampicin for many patients precluded the inclusion of these variables in the analysis...
2017: PloS One
https://www.readbyqxmd.com/read/29155735/quantification-of-monocyte-transmigration-and-foam-cell-formation-from-individuals-with-chronic-inflammatory-conditions
#15
Thomas A Angelovich, Anna C Hearps, Anna Maisa, Theodoros Kelesidis, Anthony Jaworowski
Coronary artery disease (CAD) is a leading cause of morbidity and mortality worldwide. Atherosclerosis, a leading cause of CAD, is initiated by the transmigration of innate immune monocytes to inflammatory sites of deposited lipid called fatty streaks, which are present in arterial walls of medium to large arteries. The key pathogenic feature of lesions at this early stage of atherosclerosis is the maturation of monocytes which migrate into arteries to form foam cells or lipid-laden macrophages. Considerable evidence supports the hypothesis that risk of atherosclerosis is increased by chronic inflammatory conditions accompanying diseases such as rheumatoid arthritis and HIV, as well as general ageing, and that this risk is predicted by monocyte activation...
October 17, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29154688/substance-use-and-cognitive-function-as-drivers-of-condomless-anal-sex-among-hiv-positive-gay-bisexual-and-other-men-who-have-sex-with-men-aged-50-and-older-the-gold-studies
#16
Sandra A Kupprat, Kristen D Krause, Danielle C Ompad, Perry N Halkitis
PURPOSE: Substance use has been linked to the sexual transmission of HIV among gay, bisexual, and other men who have sex with men (MSM) across the lifespan. Among older, HIV-positive, MSM populations, cognitive dysfunction associated with age and HIV disease progression also may play a role in sexual risk-taking. People aged 50 years and older represent a growing proportion of the overall HIV-positive population. This study aimed to explore relationships between substance use and cognitive function, and their impact on condomless anal sex (CAS) among HIV-positive gay, bisexual, and other MSM aged 50 years and older...
November 20, 2017: LGBT Health
https://www.readbyqxmd.com/read/29154393/using-participatory-system-dynamics-modeling-to-examine-the-local-hiv-test-and-treatment-care-continuum-in-order-to-reduce-community-viral-load
#17
Margaret R Weeks, Jianghong Li, David Lounsbury, Helena Danielle Green, Maryann Abbott, Marcie Berman, Lucy Rohena, Rosely Gonzalez, Shawn Lang, Heather Mosher
Achieving community-level goals to eliminate the HIV epidemic requires coordinated efforts through community consortia with a common purpose to examine and critique their own HIV testing and treatment (T&T) care system and build effective tools to guide their efforts to improve it. Participatory system dynamics (SD) modeling offers conceptual, methodological, and analytical tools to engage diverse stakeholders in systems conceptualization and visual mapping of dynamics that undermine community-level health outcomes and identify those that can be leveraged for systems improvement...
November 20, 2017: American Journal of Community Psychology
https://www.readbyqxmd.com/read/29153491/measures-of-human-immunodeficiency-virus-hiv-community-viral-load-and-hiv-incidence-among-people-who-inject-drugs
#18
Cristie Glasheen, Eric O Johnson, Jennifer Lorvick, Alex H Kral
PURPOSE: To evaluate the measures of community human immunodeficiency virus (HIV) viral load (VL) and the association with HIV incidence among people who inject drugs (PWID). METHODS: Data were from 1986 to 1999 Urban Health Study conducted among PWID in the San Francisco Bay Area. Extant measures of community VL use mean VL among HIV + study participants, not accounting for the proportion of HIV- individuals. We compared the strength of the associations between HIV incidence and the traditionally measured mean community VL and a new prevalence-adjusted community VL, calculated by dividing the sum of VL among HIV + participants by the total participants irrespective of HIV status...
November 3, 2017: Annals of Epidemiology
https://www.readbyqxmd.com/read/29153448/evidence-of-disturbances-of-deep-levels-of-semantic-cohesion-within-personal-narratives-in-schizophrenia
#19
Jon A Willits, Timothy Rubin, Michael N Jones, Kyle S Minor, Paul H Lysaker
Since initial conceptualizations, schizophrenia has been thought to involve core disturbances in the ability to form complex, integrated ideas. Although this has been studied in terms of formal thought disorder, the level of involvement of altered latent semantic structure is less clear. To explore this question, we compared the personal narratives of adults with schizophrenia (n=200) to those produced by an HIV+ sample (n=55) using selected indices from Coh-Metrix. Coh-Metrix is a software system designed to compute various language usage statistics from transcribed written and spoken language documents...
November 16, 2017: Schizophrenia Research
https://www.readbyqxmd.com/read/29153265/hepatitis-c-virus-treatment-as-prevention-in-an-extended-network-of-people-who-inject-drugs-in-the-usa-a-modelling-study
#20
Alexei Zelenev, Jianghong Li, Alyona Mazhnaya, Sanjay Basu, Frederick L Altice
BACKGROUND: Chronic infections with hepatitis C virus (HCV) and HIV are highly prevalent in the USA and concentrated in people who inject drugs. Treatment as prevention with highly effective new direct-acting antivirals is a prospective HCV elimination strategy. We used network-based modelling to analyse the effect of this strategy in HCV-infected people who inject drugs in a US city. METHODS: Five graph models were fit using data from 1574 people who inject drugs in Hartford, CT, USA...
November 15, 2017: Lancet Infectious Diseases
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