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https://www.readbyqxmd.com/read/28334018/development-of-an-evidence-evaluation-and-synthesis-system-for-drug-drug-interactions-and-its-application-to-a-systematic-review-of-hiv-and-malaria-co-infection
#1
Kay Seden, Sara Gibbons, Catia Marzolini, Jonathan M Schapiro, David M Burger, David J Back, Saye H Khoo
BACKGROUND: In all settings, there are challenges associated with safely treating patients with multimorbidity and polypharmacy. The need to characterise, understand and limit harms resulting from medication use is therefore increasingly important. Drug-drug interactions (DDIs) are prevalent in patients taking antiretrovirals (ARVs) and if unmanaged, may pose considerable risk to treatment outcome. One of the biggest challenges in preventing DDIs is the substantial gap between theory and clinical practice...
2017: PloS One
https://www.readbyqxmd.com/read/28329343/commonly-transmitted-hiv-1-drug-resistance-mutations-in-reverse-transcriptase-and-protease-in-antiretroviral-treatment-na%C3%A3-ve-patients-do-not-affect-response-to-tenofovir-disoproxil-fumarate-or-tenofovir-alafenamide-containing-regimens
#2
Nicolas A Margot, Pamela Wong, Rima Kulkarni, Kirsten White, Danielle Porter, Michael E Abram, Christian Callebaut, Michael D Miller
Background.: The presence of transmitted drug-resistance mutations (TDRM) in antiretroviral (ARV) treatment-naïve patients can adversely affect the outcome of ARV therapy. Methods.: Resistance testing was conducted in 6704 ARV-naïve subjects predominantly from the U.S. and Europe in 9 Gilead clinical studies from 2000 to 2013. Results.: The presence of TDRM increased during this period (5.2% to 11.4%), primarily driven by non-nucleoside RT inhibitor resistance mutations (NNRTI; 0...
January 30, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28329090/antiretrovirals-fractures-and-osteonecrosis-in-a-large-international-hiv-cohort
#3
Álvaro H Borges, Jennifer Hoy, Eric Florence, Dalibor Sedlacek, Hans-Jürgen Stellbrink, Vilma Uzdaviniene, Janez Tomazic, Panagiotis Gargalianos-Kakolyris, Patrick Schmid, Chloe Orkin, Court Pedersen, Clifford Leen, Christian Pradier, Fiona Mulcahy, Anna Lisa Ridolfo, Therese Staub, Fernando Maltez, Rainer Weber, Leo Flamholc, Galina Kyselyova, Jens D Lungren, Amanda Mocroft
Background: Antiretrovirals (ARVs) affect bone density and turnover, but their effect on risk of fractures and osteonecrosis of the femoral head is less understood. We investigated if exposure to ARVs increases the risk of both bone outcomes. Methods: EuroSIDA participants were followed to assess fractures and osteonecrosis. Poisson regression identified clinical, laboratory and demographic predictors of either bone outcome. Ever, current and cumulative exposures to ARVs were assessed...
February 22, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28328548/characterization-of-hiv-seroconverters-in-a-tdf-ftc-prep-study-hptn-067-adapt
#4
Mariya V Sivay, Maoji Li, Estelle Piwowar-Manning, Yinfeng Zhang, Sarah E Hudelson, Mark A Marzinke, Rivet K Amico, Andrew Redd, Craig W Hendrix, Peter L Anderson, Kevin Bokoch, Linda Gail-Bekker, Frits van Griensven, Sharon Mannheimer, James P Hughes, Robert Grant, Susan H Eshleman
BACKGROUND: HPTN 067/ADAPT evaluated tenofovir disoproxil fumarate/emtricitabine (TDF/FTC) pre-exposure prophylaxis (PrEP) in women (South Africa) and men who have sex with men (Thailand, US). Participants received once-weekly directly observed TDF/FTC (DOT), and were then randomized to daily, time-driven, or event-driven PrEP. This report describes characterization of 12 HIV seroconversion events in this trial. METHODS: HIV rapid testing was performed at study sites...
March 22, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/28322573/blood-lead-levels-and-neurodevelopmental-function-in-perinatally-hiv-exposed-uninfected-children-in-a-us-based-longitudinal-cohort-study
#5
Katherine Tassiopoulos, Yanling Huo, Joseph Braun, Paige L Williams, Renee Smith, Ann Aschengrau, Sharon Nichols, Rohan Hazra, William A Meyer, Katherine Knapp, Nagamah S Deygoo, George R Seage Iii
BACKGROUND: While children's exposure to environmental lead in the U.S. has decreased, areas of elevated levels remain. Because lead exposure is a risk factor for developmental delays, it should be considered when studying neurodevelopmental effects of in-utero antiretroviral medication (ARV) exposure in the growing population of perinatally HIV-exposed, uninfected children (PHEU). We compared blood lead levels (BPb) in PHEU children enrolled in the Surveillance Monitoring of ART Toxicities (SMARTT) Study to U...
March 21, 2017: AIDS Research and Human Retroviruses
https://www.readbyqxmd.com/read/28302065/lamivudine-dolutegravir-dual-therapy-in-hiv-infected-virologically-suppressed-patients
#6
Franco Maggiolo, Roberto Gulminetti, Layla Pagnucco, Margherita Digaetano, Simone Benatti, Daniela Valenti, Annapaola Callegaro, Diego Ripamonti, Cristina Mussini
BACKGROUND: Little is known about the applicability of dual treatments based on integrase inhibitors. We explored the combination of lamivudine + dolutegravir as an option when switching from standard cART in virologically suppressed patients. METHODS: In this prospective cohort we enrolled patients previously switched to 3TC + DTG who were 18 years or older, with no previous resistance mutations to the used drugs, having a HIV-RNA <50 copies/ml for 6 months or longer, negative for HBsAg and on a stable (>6 months) cART...
March 16, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28300660/mechanistic-understanding-of-the-cysteine-capping-modifications-of-antibodies-enables-selective-chemical-engineering-in-live-mammalian-cells
#7
Xiaotian Zhong, Tao He, Amar S Prashad, Wenge Wang, Justin Cohen, Darren Ferguson, Amy S Tam, Eric Sousa, Laura Lin, Lioudmila Tchistiakova, Scott Gatto, Aaron D'Antona, Yen-Tung Luan, Weijun Ma, Richard Zollner, Jing Zhou, Bo Arve, Will Somers, Ronald Kriz
Protein modifications by intricate cellular machineries often redesign the structure and function of existing proteins to impact biological networks. Disulfide bond formation between cysteine (Cys) pairs is one of the most common modifications found in extracellularly-destined proteins, key to maintaining protein structure. Unpaired surface cysteines on secreted mammalian proteins are also frequently found disulfide-bonded with free Cys or glutathione (GSH) in circulation or culture, the mechanism for which remains unknown...
March 11, 2017: Journal of Biotechnology
https://www.readbyqxmd.com/read/28289388/hla-b-57-allele-is-associated-with-concomitant-anti-tuberculosis-and-antiretroviral-drugs-induced-liver-toxicity-in-ethiopians
#8
Zelalem Petros, Junko Kishikawa, Eyasu Makonnen, Getnet Yimer, Abiy Habtewold, Eleni Aklillu
Drug-induced liver injury (DILI) is a known adverse effect of both anti-tuberculosis (anti-TB) and antiretroviral (ARV) drugs. Recent studies highlight the implications of genetic predispositions to DILI. We performed a case-control study to identify Human Leukocyte Antigen-B (HLA-B) variant alleles associated with anti-TB and ARV co-treatment induced liver toxicity in Ethiopian TB and HIV co-infected patients. A total of 495 newly diagnosed TB and HIV co-infected patients were enrolled and received rifampicin based anti-TB and efavirenz based ARV therapy...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28288679/muscovy-duck-reovirus-%C3%AF-ns-protein-triggers-autophagy-enhancing-virus-replication
#9
Yijian Wu, Longping Cui, Erpeng Zhu, Wuduo Zhou, Quanxi Wang, Xiaoping Wu, Baocheng Wu, Yifan Huang, Hung-Jen Liu
BACKGROUND: Muscovy duck reovirus (MDRV) causes high morbidity and mortality in Muscovy ducklings at 10 days old and can persist in an infected flock until the ducklings of 6 weeks old. It shares common physicochemical properties with avian reovirus (ARV) and differs in coding assignment and pathogenicity. The ARV p17 protein has been shown to trigger autophagy via activation multiple signaling pathways, which benefits virus replication. Since MDRV lacks the p17 protein, whether and how MDRV induces autophagy remains unknown...
March 14, 2017: Virology Journal
https://www.readbyqxmd.com/read/28278573/mutual-hiv-status-disclosure-is-associated-with-consistent-condom-use-in-public-sector-art-clients-in-free-state-province-south-africa-a-short-report
#10
Frederik le Roux Booysen, Edwin Wouters, Damien de Walque, Mead Over
Risky sexual behaviour in PLWHA on antiretroviral therapy threatens both prevention and treatment efforts, but disclosure promises to support safer sexual practices. This paper investigates the association between HIV self-disclosure and consistent condom use in a cohort of public sector patients on antiretroviral (ARV) treatment. Using data from the FEATS cohort study, logistic regression analysis shows that knowledge of your partner's HIV status is positively associated with consistent condom use (OR 2.73, 95% CI 1...
February 9, 2017: AIDS Care
https://www.readbyqxmd.com/read/28275126/vitamin-b-6-and-colorectal-cancer-risk-a-prospective-population-based-study-using-3-distinct-plasma-markers-of-vitamin-b-6-status
#11
Björn Gylling, Robin Myte, Jörn Schneede, Göran Hallmans, Jenny Häggström, Ingegerd Johansson, Arve Ulvik, Per M Ueland, Bethany Van Guelpen, Richard Palmqvist
Background: Higher plasma concentrations of the vitamin B-6 marker pyridoxal 5'-phosphate (PLP) have been associated with reduced colorectal cancer (CRC) risk. Inflammatory processes, including vitamin B-6 catabolism, could explain such findings.Objective: We investigated 3 biomarkers of vitamin B-6 status in relation to CRC risk.Design: This was a prospective case-control study of 613 CRC cases and 1190 matched controls nested within the Northern Sweden Health and Disease Study (n = 114,679). Participants were followed from 1985 to 2009, and the median follow-up from baseline to CRC diagnosis was 8...
March 8, 2017: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28269457/estimation-of-muscle-fatigue-by-ratio-of-mean-frequency-to-average-rectified-value-from-surface-electromyography
#12
Jeffry Bonar Fernando, Mototaka Yoshioka, Jun Ozawa
A new method to estimate muscle fatigue quantitatively from surface electromyography (EMG) is proposed. The ratio of mean frequency (MNF) to average rectified value (ARV) is used as the index of muscle fatigue, and muscle fatigue is detected when MNF/ARV falls below a pre-determined or pre-calculated baseline. MNF/ARV gives larger distinction between fatigued muscle and non-fatigued muscle. Experiment results show the effectiveness of our method in estimating muscle fatigue more correctly compared to conventional methods...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28262770/fecal-bacterial-communities-in-treated-hiv-infected-individuals-on-two-antiretroviral-regimens
#13
Sandra Pinto-Cardoso, Catherine Lozupone, Olivia Briceño, Selma Alva-Hernández, Norma Téllez, Aguilar Adriana, Akio Murakami-Ogasawara, Gustavo Reyes-Terán
Intestinal microbiome changes that occur in HIV positive individuals on different antiretroviral therapy (ART) regimens are important to understand, as they are potentially linked with chronic inflammation and microbiome-linked comorbidities that occur at increased incidence in this population. We conducted a cross-sectional study comparing the fecal microbiomes of HIV-uninfected (HIV SN) to HIV-infected individuals on long-term ART (HIV+ LTART) from Mexico using 16S ribosomal RNA (16sRNA) targeted sequencing...
March 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28258984/application-of-design-space-optimization-strategy-to-the-development-of-lc-methods-for-simultaneous-analysis-of-18-antiretroviral-medicines-and-4-major-excipients-used-in-various-pharmaceutical-formulations
#14
Védaste Habyalimana, Jérémie Kindenge Mbinze, Achille Loconon Yemoa, Christelle Waffo, Tidiane Diallo, Nicodème Kalenda Tshilombo, Justin-Léonard Kadima Ntokamunda, Pierre Lebrun, Philippe Hubert, Roland Djang'eing'a Marini
As one of the world's most significant public health challenges in low- and middle-income countries, HIV/AIDS deserves to be treated with appropriate medicines, however which are not spared from counterfeiting. For that, we developed screening and specific HPLC methods that can analyze 18 antiretroviral medicines (ARV) and 4 major excipients. Design of experiments and design space methodology were initially applied for 15 ARV and the 4 excipients with prediction thanks to Monte Carlo simulations and focusing on rapidity and affordability thus using short column and low cost organic solvent (methanol) in gradient mode with 10mM buffer solutions of ammonium hydrogen carbonate...
February 24, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28249009/current-use-of-statins-reduces-risk-of-hiv-rebound-on-suppressive-haart
#15
Henning Drechsler, Colby Ayers, James Cutrell, Naim Maalouf, Pablo Tebas, Roger Bedimo
BACKGROUND: Despite compelling evidence for activity against HIV-1 in vitro, a virologic effect of statins has not been shown in clinical studies. Given their short plasma half-lives, such an effect may be transient and only apparent during ongoing exposure. METHODS: We studied all HIV infected US-Veterans who started HAART 1995-2011, had a documented HIV viral load (VL) >1000 copies/mL, reached an undetectable VL on HAART, and had ≥1 follow-up VL within 13 months...
2017: PloS One
https://www.readbyqxmd.com/read/28241493/neuronal-stress-and-injury-caused-by-hiv-1-cart-and-drug-abuse-converging-contributions-to-hand
#16
REVIEW
Ana B Sanchez, Marcus Kaul
Multiple mechanisms appear to contribute to neuronal stress and injury underlying HIV-associated neurocognitive disorders (HAND), which occur despite the successful introduction of combination antiretroviral therapy (cART). Evidence is accumulating that components of cART can itself be neurotoxic upon long-term exposure. In addition, abuse of psychostimulants, such as methamphetamine (METH), seems to compromise antiretroviral therapy and aggravate HAND. However, the combined effect of virus and recreational and therapeutic drugs on the brain is still incompletely understood...
February 23, 2017: Brain Sciences
https://www.readbyqxmd.com/read/28239657/tissue-resident-macrophages-can-contain-replication-competent-virus-in-antiretroviral-naive-siv-infected-asian-macaques
#17
Sarah R DiNapoli, Alexandra M Ortiz, Fan Wu, Kenta Matsuda, Homer L Twigg, Vanessa M Hirsch, Kenneth Knox, Jason M Brenchley
SIV DNA can be detected in lymphoid tissue-resident macrophages of chronically SIV-infected Asian macaques. These macrophages also contain evidence of recently phagocytosed SIV-infected CD4(+) T cells. Here, we examine whether these macrophages contain replication-competent virus, whether viral DNA can be detected in tissue-resident macrophages from antiretroviral (ARV) therapy-treated animals and humans, and how the viral sequences amplified from macrophages and contemporaneous CD4(+) T cells compare. In ARV-naive animals, we find that lymphoid tissue-resident macrophages contain replication-competent virus if they also contain viral DNA in ARV-naive Asian macaques...
February 23, 2017: JCI Insight
https://www.readbyqxmd.com/read/28235766/sigma1-targeting-to-suppress-aberrant-androgen-receptor-signaling-in-prostate-cancer
#18
Jeffrey D Thomas, Charles G Longen, Halley M Oyer, Nan Chen, Christina M Maher, Joseph M Salvino, Blase Kania, Kelsey N Anderson, William F Ostrander, Karen E Knudsen, Felix J Kim
Suppression of androgen receptor (AR) activity in prostate cancer by androgen depletion or direct AR antagonist treatment, although initially effective, leads to incurable castration resistant prostate cancer (CRPC) via compensatory mechanisms including resurgence of AR and AR splice variant (ARV) signaling. Emerging evidence suggests that Sigma1 (also known as sigma-1 receptor) is a unique chaperone or scaffolding protein that contributes to cellular protein homeostasis. We reported previously that some Sigma1-selective small molecules can be used to pharmacologically modulate protein homeostasis pathways...
February 24, 2017: Cancer Research
https://www.readbyqxmd.com/read/28227707/estimation-of-muscle-fatigue-by-ratio-of-mean-frequency-to-average-rectified-value-from-surface-electromyography
#19
Jeffry Bonar Fernando, Mototaka Yoshioka, Jun Ozawa, Jeffry Bonar Fernando, Mototaka Yoshioka, Jun Ozawa, Mototaka Yoshioka, Jeffry Bonar Fernando, Jun Ozawa
A new method to estimate muscle fatigue quantitatively from surface electromyography (EMG) is proposed. The ratio of mean frequency (MNF) to average rectified value (ARV) is used as the index of muscle fatigue, and muscle fatigue is detected when MNF/ARV falls below a pre-determined or pre-calculated baseline. MNF/ARV gives larger distinction between fatigued muscle and non-fatigued muscle. Experiment results show the effectiveness of our method in estimating muscle fatigue more correctly compared to conventional methods...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28213740/predictors-of-institutionalization-among-home-dwelling-older-finnish-people-a-22-year-follow-up-study
#20
Marika Salminen, Jenni Vire, Laura Viikari, Tero Vahlberg, Hannu Isoaho, Aapo Lehtonen, Matti Viitanen, Seija Arve, Sini Eloranta
BACKGROUND: Identification of predictive factors on institutionalization provides the basis for the development and application of preadmission assessment. There is a lack of evidence for predictors of institutionalization for older people. AIMS: To examine the effect of predictive factors on institutionalization in home-dwelling 70-year-old people. METHODS: The data were collected in 1991 by the clinical examinations, a postal questionnaire, and an interview from the residents of Turku, Finland, born in 1920 (n = 1032)...
February 17, 2017: Aging Clinical and Experimental Research
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