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https://www.readbyqxmd.com/read/28328548/characterization-of-hiv-seroconverters-in-a-tdf-ftc-prep-study-hptn-067-adapt
#1
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/28327966/de-novo-transcriptome-assemblies-of-four-xylem-sap-feeding-insects
#2
Erica E Tassone, Charles C Cowden, S J Castle
Background: Spittle bugs and sharpshooters are well-known xylem sap-feeding insects and vectors of the phytopathogenic bacterium Xylella fastidiosa (Wells), a causal agent of Pierce's disease of grapevines and other crop diseases. Specialized feeding on nutrient-deficient xylem sap is relatively rare among insect herbivores, and only limited genomic and transcriptomic information has been generated for xylem-sap feeders. To develop a more comprehensive understanding of biochemical adaptations and symbiotic relationships that support survival on a nutritionally austere dietary source, transcriptome assemblies for three sharpshooter species and one spittlebug species were produced...
February 24, 2017: GigaScience
https://www.readbyqxmd.com/read/28322984/pain-related-evoked-potentials-after-intraepidermal-electrical-stimulation-to-a%C3%AE-and-c-fibers-in-patients-with-neuropathic-pain
#3
Shigeki Omori, Sagiri Isose, Sonoko Misawa, Keisuke Watanabe, Yukari Sekiguchi, Kazumoto Shibuya, Minako Beppu, Hiroshi Amino, Satoshi Kuwabara
Neuropathic pain can result from neuronal hyperexcitability and complex interactions of the nociceptive pathways. Intraepidermal electrical stimulation (IES) is a novel technique that can selectively activate Aδ and C fibers. To investigate patterns of changes in Aδ- and C-mediated brain responses in patients with neuropathic pain using IES, we recorded pain-related evoked potential (PREP) after IES of Aδ and C fibers in 20 patients with neuropathic pain and 15 age-matched healthy volunteers. We evaluated PREP latencies, amplitudes, and amplitude ratios of PREPs after C/Aδ-fiber stimulation...
March 18, 2017: Neuroscience Research
https://www.readbyqxmd.com/read/28322067/the-future-of-pre-exposure-prophylaxis-prep-for-human-immunodeficiency-virus-hiv-infection
#4
Ayşe Elif Özdener, Tae Eun Park, Julie Kalabalik, Rachna Gupta
People at high risk for HIV acquisition should be offered pre-exposure prophylaxis (PrEP). Tenofovir disoproxil fumarate (TDF)/emtricitabine (FTC) is currently the only medication recommended for pre-exposure prophylaxis (PrEP) by the Centers for Disease Control and Prevention (CDC) in people at high risk for HIV transmission. This article will review medications currently under investigation and the future landscape of PrEP therapy. Areas covered: This article will review clinical trials that have investigated nontraditional regimens of TDF/FTC, antiretroviral agents from different drug classes such as integrase strand transfer inhibitors (INSTI), nucleoside reverse transcriptase inhibitors (NRTI), and non-nucleoside reverse transcriptase inhibitors (NNRTI) as potential PrEP therapies...
March 21, 2017: Expert Review of Anti-infective Therapy
https://www.readbyqxmd.com/read/28318148/barriers-to-innovation-in-human-rabies-prophylaxis-and-treatment-a-causal-analysis-of-insights-from-key-opinion-leaders-and-literature
#5
L H M van de Burgwal, A M G Neevel, C A C M Pittens, A D M E Osterhaus, C E Rupprecht, E Claassen
Rabies is an essentially 100% fatal, zoonotic disease, caused by Lyssaviruses. Currently, the disease is vaccine-preventable with pre- and post-exposure prophylaxis (PrEP and PEP). Still, rabies virus is estimated to cause up to 60,000 human deaths annually, of which the vast majority occurs in rural Asia and Africa, due to the inaccessibility of prophylaxis and non-existence of treatment. Despite these unmet clinical needs, rabies control mainly focuses on the sylvatic reservoir and drug innovation receives relatively little attention compared to other neglected tropical diseases (NTDs)...
March 20, 2017: Zoonoses and Public Health
https://www.readbyqxmd.com/read/28301624/photodynamic-therapy-effectively-treats-actinic-keratoses-without-pre-illumination-incubation-time
#6
Jessica Gandy, Brian Labadie, Dina Bierman, Christopher Zachary
<p>BACKGROUND: Actinic keratoses (AKs) are dysplastic lesions of the epidermis that have the potential to progress to non-melanoma skin cancers (NMSC). Traditional photodynamic therapy (PDT) requires a pre-illumination incubation time, which adds to overall in-office time and has been linked to pain. Our group has found a novel protocol to effectively treat AKs with PDT that eliminates the pre-illumination incubation period and uses 2 back-to-back cycles of 16 minute 40 seconds.</p> <p>METHODS: The patient was prepped with soapy water and isopropyl alcohol, and thick AKs were descaled with a curette...
March 1, 2017: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28300619/brain-neurotransmitters-in-an-animal-model-with-postpartum-depressive-like-behavior
#7
Y Avraham, Y Hants, L Vorobeiv, M Premishlano, Wiessam Abu Ahmad, D Mankuta, E Galun, S Arbel-Alon
Post-Partum Depression (PPD) occurs in 15% of pregnancies and its patho-physiology is not known. We studied female BALB/c ("depressive") and C57BL/6 (control) mice as a model for PPD and assessed their behavior and correlates with brain neurotransmitters (NTs) - norepinephrine, dopamine, serotonin and intermediates, during the pre-pregnancy (PREP), pregnancy (PREG) and post-Partum (PP) periods. Depressive-like behavior was evaluated by the Open Field (OFT), Tail Suspension (TST) and Forced Swim (FST) tests...
March 11, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28291050/medication-sharing-is-rare-among-african-hiv-1-serodiscordant-couples-enrolled-in-an-efficacy-trial-of-oral-pre-exposure-prophylaxis-prep-for-hiv-1-prevention
#8
Kerry A Thomson, Jessica E Haberer, Mark Marzinke, Andrew Mujugira, Craig Hendrix, Connie Celum, Patrick Ndase, Alan Ronald, David R Bangsberg, Jared M Baeten
Sharing of pre-exposure prophylaxis (PrEP) medications is a concern for PrEP implementation. For HIV-1 serodiscordant couples, sharing may undermine HIV-1 prevention benefits and also cause antiretroviral resistance if taken by HIV-1 infected partners. Within a PrEP efficacy trial among HIV-1 serodiscordant couples, we assessed the occurrence of PrEP sharing by self-report and plasma tenofovir concentrations in HIV-1 infected partners. PrEP sharing was self-reported at <0.01% of visits and 0-1.6% of randomly selected and 0% of purposively selected specimens from HIV-1 infected participants had detectable tenofovir concentrations (median: 66...
March 10, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/28291047/the-impact-of-pre-exposure-prophylaxis-among-men-who-have-sex-with-men-an-individual-based-model
#9
Parastu Kasaie, Jeff Pennington, Maunank S Shah, Stephen A Berry, Danielle German, Colin P Flynn, Chris Beyrer, David W Dowdy
OBJECTIVES: Pre-exposure prophylaxis (PrEP) is recommended for preventing HIV infection among individuals at high risk, including men who have sex with men (MSM). Although its individual-level efficacy is proven, questions remain regarding population-level impact of PrEP implementation. DESIGN: We developed an agent-based simulation of HIV transmission among MSM, accounting for demographics, sexual contact network, HIV disease stage and use of antiretroviral therapy...
March 10, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/28286983/stigma-medical-mistrust-and-perceived-racism-may-affect-prep-awareness-and-uptake-in-black-compared-to-white-gay-and-bisexual-men-in-jackson-mississippi-and-boston-massachusetts
#10
Sean Cahill, S Wade Taylor, Steven A Elsesser, Leandro Mena, DeMarc Hickson, Kenneth H Mayer
Gay and bisexual men and other men who have sex with men (MSM) account for more than two thirds of new HIV infections in the U.S., with Black MSM experiencing the greatest burden. Antiretroviral pre-exposure prophylaxis (PrEP) can reduce MSM's vulnerability to HIV infection. Uptake of PrEP has been limited, particularly among racial and ethnic minority MSM. Four semi-structured focus groups with gay and bisexual men and other MSM at risk for HIV infection were convened in Boston and Jackson in late 2013. The analysis plan utilized a within-case, across-case approach to code and analyze emerging themes, and to compare results across the two cities...
March 12, 2017: AIDS Care
https://www.readbyqxmd.com/read/28279949/usability-and-acceptability-of-a-mobile-comprehensive-hiv-prevention-app-for-men-who-have-sex-with-men-a-pilot-study
#11
Patrick S Sullivan, Robert Driggers, Joanne D Stekler, Aaron Siegler, Tamar Goldenberg, Sarah J McDougal, Jason Caucutt, Jeb Jones, Rob Stephenson
BACKGROUND: Men who have sex with men (MSM) are the group most impacted by the human immunodeficiency virus (HIV) epidemic and the only subgroup in the United States among which new HIV diagnoses are not decreasing. To achieve the US National HIV/AIDS (acquired immunodeficiency syndrome) Strategy goals of reducing new diagnoses by 25%, high (eg, 30-50%) coverage of multiple HIV prevention interventions is needed in both urban and rural areas. Mobile phone "apps" are an important channel through which prevention services could be provided at scale and at low marginal cost...
March 9, 2017: JMIR MHealth and UHealth
https://www.readbyqxmd.com/read/28279935/evaluation-of-the-illumina-forenseq%C3%A2-dna-signature-prep-kit-mps-forensic-application-for-the-miseq-fgx%C3%A2-benchtop-sequencer
#12
Catarina Xavier, Walther Parson
Massively Parallel (Next Generation) Sequencing (MPS) technologies have recently been proven useful and successful in typing various markers relevant in forensic genetics, such as STRs, SNPs and mitochondrial genomes. Early studies investigated self-developed DNA libraries, commercially supplied kits are currently being made available to allow a smoother and gradual implementation of such technologies in forensic laboratories. The ForenSeq™ DNA Signature Prep Kit (Illumina, CA) is the first commercially available STR kit that can be used on the MiSeq FGx™ (Illumina, CA) benchtop high-throughput sequencer...
March 1, 2017: Forensic Science International. Genetics
https://www.readbyqxmd.com/read/28278062/bioactivity-studies-of-huh-7-cells-derived-human-epidermal-growth-factor-expressed-in-pichia-pastoris
#13
Mohsin Ahmad Khan, Nadeem Ahmed, Muhammad Islam Khan, Ahmad Usman Zafar, Saad Tahir, Muhammad Sohail Anjum, Muhammad Ali, Faidad Khan, Tayyab Husnain
Previously, we have reported cloning of human epidermal growth factor gene from Huh-7 cells and its extracellular expression in Pichia pastoris. The presented work is a detailed report regarding molecular characterization of Huh-7 cells-derived hEGF expressed in Pichia pastoris with special reference to its glycosylation profiling and bioactivity studies. Densitometric scanning of SDS-PAGE separated extracellular proteins from hEGF recombinant Pichia pastoris strain indicated that about 84% of the extracellular proteins were glycosylated...
March 9, 2017: Bioscience, Biotechnology, and Biochemistry
https://www.readbyqxmd.com/read/28276922/science-technology-power-and-sex-prep-and-hiv-positive-gay-men-in-paris
#14
Julien Brisson, Vinh-Kim Nguyen
The pre-exposure prophylaxis (PrEP) drug Truvada is a new HIV prevention technology that is predominantly promoted as relevant to HIV-negative gay men. This paper explores what PrEP represents for HIV-positive gay men living in Paris, based upon data collected through interviews and ethnographic research. While HIV-positive gay men do not directly consume Truvada through PrEP, they nonetheless hold opinions and understandings of this drug, specifically as it relates to their own sexuality. This paper expands the representations and meanings of this new technology in a different light through the voices of gay men living with HIV in Paris...
February 21, 2017: Culture, Health & Sexuality
https://www.readbyqxmd.com/read/28274904/gender-specific-combination-hiv-prevention-for-youth-in-high-burden-settings-the-mp3-youth-observational-pilot-study-protocol
#15
Jasmine Buttolph, Irene Inwani, Kawango Agot, Charles M Cleland, Peter Cherutich, James N Kiarie, Alfred Osoti, Connie L Celum, Jared M Baeten, Ruth Nduati, John Kinuthia, Timothy B Hallett, Ramzi Alsallaq, Ann E Kurth
BACKGROUND: Nearly three decades into the epidemic, sub-Saharan Africa (SSA) remains the region most heavily affected by human immunodeficiency virus (HIV), with nearly 70% of the 34 million people living with HIV globally residing in the region. In SSA, female and male youth (15 to 24 years) are at a disproportionately high risk of HIV infection compared to adults. As such, there is a need to target HIV prevention strategies to youth and to tailor them to a gender-specific context. This protocol describes the process for the multi-staged approach in the design of the MP3 Youth pilot study, a gender-specific, combination, HIV prevention intervention for youth in Kenya...
March 8, 2017: JMIR Research Protocols
https://www.readbyqxmd.com/read/28273507/flanking-region-variation-of-forenseq%C3%A2-dna-signature-prep-kit-str-and-snp-loci-in-yavapai-native-americans
#16
Frank R Wendt, Jonathan L King, Nicole M M Novroski, Jennifer D Churchill, Jillian Ng, Robert F Oldt, Kelly L McCulloh, Jessica A Weise, David Glenn Smith, Sreetharan Kanthaswamy, Bruce Budowle
Massively parallel sequencing (MPS) offers advantages over current capillary electrophoresis-based analysis of short tandem repeat (STR) loci for human identification testing. In particular STR repeat motif sequence information can be obtained, thereby increasing the discrimination power of some loci. While sequence variation within the repeat region is observed relatively frequently in some of the commonly used STRs, there is an additional degree of variation found in the flanking regions adjacent to the repeat motif...
February 27, 2017: Forensic Science International. Genetics
https://www.readbyqxmd.com/read/28271718/acceptability-of-microbicidal-vaginal-rings-and-oral-pre-exposure-prophylaxis-for-hiv-prevention-among-female-sex-workers-in-a-high-prevalence-us-city
#17
Sarah M Peitzmeier, Catherine Tomko, Erin Wingo, Anne Sawyer, Susan G Sherman, Nancy Glass, Chris Beyrer, Michele R Decker
Biomedical HIV prevention tools including oral pre-exposure prophylaxis (PrEP) and vaginal microbicidal rings hold unique value for high-risk women who may have limited capacity for condom negotiation, including the key populations of sex workers and drug users. Commercial sex is a PrEP indicator in CDC guidelines, yet little is known about female sex workers' (FSWs) knowledge of and attitudes toward PrEP or the recently developed monthly vaginal microbicide rings. We describe knowledge and attitudes toward PrEP and microbicide rings in a sample of 60 mostly drug-using FSWs in Baltimore, Maryland, a high HIV-prevalence US city...
March 8, 2017: AIDS Care
https://www.readbyqxmd.com/read/28261087/mechanism-of-action-of-prolyl-oligopeptidase-prep-in-degenerative-brain-diseases-has-peptidase-activity-only-a-modulatory-role-on-the-interactions-of-prep-with-proteins
#18
Pekka T Männistö, J Arturo García-Horsman
In the aging brain, the correct balance of neural transmission and its regulation is of particular significance, and neuropeptides have a significant role. Prolyl oligopeptidase (PREP) is a protein highly expressed in brain, and evidence indicates that it is related to aging and in neurodegenration. Although PREP is regarded as a peptidase, the physiological substrates in the brain have not been defined, and after intense research, the molecular mechanisms where this protein is involved have not been defined...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/28260694/a-case-study-of-chewed-truvada-%C3%A2-for-prep-maintaining-protective-drug-levels-as-measured-by-a-novel-urine-tenofovir-assay
#19
Linden Lalley-Chareczko, Devon Clark, Athena F Zuppa, Ganesh Moorthy, Caitlin Conyngham, Karam Mounzer, Helen Koenig
FTC/TDF (Truvada®) given as pre-exposure prophylaxis (PrEP) successfully blocks HIV when taken once daily prior to potential HIV exposure. A 22 year old male reported difficulty swallowing FTC/TDF for PrEP and subsequently began chewing the FTC/TDF tablets. Monthly urine samples assessed using liquid chromatography-tandem mass spectrometry (LC-MS/MS) indicated tenofovir levels >1000 ng/mL, indicative of protection from HIV acquisition, over a 48 week period. Data from observational studies of HIV positive patients details the successful treatment of HIV using crushed FTC/TDF delivered via feeding and gastronomy tubes while small, randomized trials of healthy volunteers demonstrate bioequivalence between whole and crushed FTC/TDF...
March 6, 2017: Antiviral Therapy
https://www.readbyqxmd.com/read/28257475/awareness-and-attitudes-of-pre-exposure-prophylaxis-for-hiv-prevention-among-physicians-in-guatemala-implications-for-country-wide-implementation
#20
Ian Ross, Carlos Mejia, Johanna Melendez, Philip A Chan, Amy C Nunn, William Powderly, Katherine Goodenberger, Jingxia Liu, Kenneth H Mayer, Rupa R Patel
INTRODUCTION: HIV continues to be a major health concern with approximately 2.1 million new infections occurring worldwide in 2015. In Central America, Guatemala had the highest incident number of HIV infections (3,700) in 2015. Antiretroviral pre-exposure prophylaxis (PrEP) was recently recommended by the World Health Organization (WHO) as an efficacious intervention to prevent HIV transmission. PrEP implementation efforts are underway in Guatemala and success will require providers that are knowledgeable and willing to prescribe PrEP...
2017: PloS One
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