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Anti retroviral therapy

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https://www.readbyqxmd.com/read/28904191/the-dose-of-retroviral-infection-determines-the-induction-of-anti-viral-nk-cell-responses
#1
Elisabeth Littwitz-Salomon, Simone Schimmer, Ulf Dittmer
Natural killer (NK) cells are part of the innate immune system and recognize virus-infected cells as well as tumor cells. Conflicting data about the beneficial or even detrimental role of NK cells in different infectious diseases were described. While the type of pathogen strongly influences NK cell functionality, less is known about how the infection dose influences the quality of a NK cell response against retroviruses. Here we used the well-established Friend retrovirus (FV) mouse model to investigate the impact of virus dose on the induction of anti-viral NK cell functions...
September 13, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28902919/factors-associated-with-pulmonary-impairment-in-hiv-infected-south-african-adults
#2
Akshay N Gupte, Michelle L Wong, Reginah Msandiwa, Grace L Barnes, Jonathan Golub, Richard E Chaisson, Christopher J Hoffmann, Neil A Martinson
BACKGROUND: HIV-infected individuals have increased risk of developing obstructive lung disease (OLD). Studies from developed countries report high viral load, low CD4 counts, and anti-retroviral therapy (ART) to be associated with OLD; but these findings may not be generalizable to populations in resource-limited settings. METHODS: We conducted a prospective cohort study of lung function in 730 HIV-infected black South African adults. Pre-bronchodilator spirometry was performed at enrollment and repeated annually for three years...
2017: PloS One
https://www.readbyqxmd.com/read/28902848/the-effect-of-hiv-infection-and-hcv-viremia-on-inflammatory-mediators-and-hepatic-injury-the-women-s-interagency-hiv-study
#3
Sheila M Keating, Jennifer L Dodge, Philip J Norris, John Heitman, Stephen J Gange, Audrey L French, Marshall J Glesby, Brian R Edlin, Patricia S Latham, Maria C Villacres, Ruth M Greenblatt, Marion G Peters
Hepatitis C virus infection induces inflammation and while it is believed that HIV co-infection enhances this response, HIV control may reduce inflammation and liver fibrosis in resolved or viremic HCV infection. Measurement of systemic biomarkers in co-infection could help define the mechanism of inflammation on fibrosis and determine if HIV control reduces liver pathology. A nested case-control study was performed to explore the relationship of systemic biomarkers of inflammation with liver fibrosis in HCV viremic and/or seropositive women with and without HIV infection...
2017: PloS One
https://www.readbyqxmd.com/read/28901908/performance-of-point-of-care-xpert-hiv-1-plasma-viral-load-assay-at-a-tertiary-hiv-care-centre-in-southern-india
#4
Chinnambedu Ravichandran Swathirajan, Ramachandran Vignesh, Jayaseelan Boobalan, Sunil Suhas Solomon, Shanmugam Saravanan, Pachamuthu Balakrishnan
BACKGROUND: Sustainable suppression of HIV replication forms the basis of anti-retroviral therapy (ART) medication. Thus, reliable quantification of HIV viral load has become an essential factor to monitor the effectiveness of the ART. Longer turnaround-time (TAT), batch testing and technical skills are major drawbacks of standard real-time PCR assays. METHODS: The performance of the point-of-care Xpert HIV-1 viral load assay was evaluated against the Abbott RealTime PCR m2000rt system...
September 13, 2017: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28893281/rna-flow-cytometric-fish-for-investigations-into-hiv-immunology-vaccination-and-cure-strategies
#5
REVIEW
Amy E Baxter, Julia Niessl, Antigoni Morou, Daniel E Kaufmann
Despite the tremendous success of anti-retroviral therapy (ART) no current treatment can eradicate latent HIV reservoirs from HIV-infected individuals or generate, effective HIV-specific immunity. Technological limitations have hampered the identification and characterization of both HIV-infected cells and HIV-specific responses in clinical samples directly ex vivo. RNA-flow cytometric fluorescence in situ hybridisation (RNA Flow-FISH) is a powerful technique, which enables detection of mRNAs in conjunction with proteins at a single-cell level...
September 12, 2017: AIDS Research and Therapy
https://www.readbyqxmd.com/read/28893280/eradication-of-hiv-1-latent-reservoirs-through-therapeutic-vaccination
#6
REVIEW
Joshua Pankrac, Katja Klein, Jamie F S Mann
Despite the significant success of combination anti-retroviral therapy to reduce HIV viremia and save lives, HIV-1 infection remains a lifelong infection that must be appropriately managed. Advances in the understanding of the HIV infection process and insights from vaccine development in other biomedical fields such as cancer, imaging, and genetic engineering have fueled rapid advancements in HIV cure research. In the last few years, several studies have focused on the development of "Kick and Kill" therapies to reverse HIV latency and kick start viral translational activity...
September 12, 2017: AIDS Research and Therapy
https://www.readbyqxmd.com/read/28889214/serping1-mrna-overexpression-in-monocytes-from-hiv-patients
#7
C Sanfilippo, D Cambria, A Longo, M Palumbo, R Avola, M Pinzone, G Nunnari, F Condorelli, G Musumeci, R Imbesi, P Castogiovanni, L Malaguarnera, Michelino Di Rosa
OBJECTIVE: The HIV-1 virus activates the complement system, an essential element of the immune system. SERPING1 is a protease inhibitor that disables C1r/C1s in the C1 complex of the classical complement pathway. METHODS: In this paper, we performed an analysis of several microarrays deposited in GEO dataset to demonstrate that SERPING1 mRNA is modulated in CD14(+) monocytes from HIV-1-infected individuals. In addition, data were validated on monocytes isolated from seronegative healthy volunteers, treated with IFNs...
September 9, 2017: Inflammation Research: Official Journal of the European Histamine Research Society ... [et Al.]
https://www.readbyqxmd.com/read/28886101/high-prevalence-of-gastric-intestinal-metaplasia-detected-by-confocal-laser-endomicroscopy-in-zambian-adults
#8
Violet Kayamba, Aaron Shibemba, Kanekwa Zyambo, Douglas C Heimburger, Douglas R Morgan, Paul Kelly
BACKGROUND: Confocal laser endomicroscopy (CLE) may increase the detection of gastric premalignant lesions, and facilitate targeted biopsies for histology. The study aim was to analyse premalignant lesions in Zambian adults using CLE. METHODS: Using CLE and histology we analysed the antral mucosa for gastric premalignant lesions in asymptomatic adults living with HIV and in HIV seronegative adults. Fasting gastric pH and the presence of Helicobacter pylori (H. pylori) were also evaluated...
2017: PloS One
https://www.readbyqxmd.com/read/28882882/how-i-treat-patients-with-hiv-related-hematological-malignancies-using-hematopoietic-cell-transplantation
#9
Joseph C Alvarnas, John A Zaia, Stephen J Forman
Hematopoietic cell transplantation (HCT) has now been shown to be safe and effective for selected HIV-infected patients with hematological malignancies. Autologous HCT is now standard of care for patients with HIV-related lymphomas who otherwise meet standard transplant criteria. Limited data also supports use of allogeneic HCT (alloHCT) in selected HIV-infected patients who meet standard transplant criteria. We recommend enrolling patients on clinical trials that offer access to CCR5Δ32 homozygous donors, if available...
September 7, 2017: Blood
https://www.readbyqxmd.com/read/28878233/a-chalcone-derivative-reactivates-latent-hiv-1-transcription-through-activating-p-tefb-and-promoting-tat-sec-interaction-on-viral-promoter
#10
Jun Wu, Ming-Tao Ao, Rui Shao, Hui-Ru Wang, Diao Yu, Mei-Juan Fang, Xiang Gao, Zhen Wu, Qiang Zhou, Yu-Hua Xue
The principal barrier to the eradication of HIV/AIDS is the existence of latent viral reservoirs. One strategy to overcome this barrier is to use latency-reversing agents (LRAs) to reactivate the latent proviruses, which can then be eliminated by effective anti-retroviral therapy. Although a number of LRAs have been found to reactivate latent HIV, they have not been used clinically due to high toxicity and poor efficacy. In this study, we report the identification of a chalcone analogue called Amt-87 that can significantly reactivate the transcription of latent HIV provirses and act synergistically with known LRAs such as prostratin and JQ1 to reverse latency...
September 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28877245/the-effect-of-engaging-unpaid-informal-providers-on-case-detection-and-treatment-initiation-rates-for-tb-and-hiv-in-rural-malawi-triage-plus-a-cluster-randomised-health-system-intervention-trial
#11
George Bello, Brian Faragher, Lifah Sanudi, Ireen Namakhoma, Hastings Banda, Rasmus Malmborg, Rachael Thomson, S Bertel Squire
BACKGROUND: The poor face barriers in accessing services for tuberculosis (TB) and Human Immuno-deficiency Virus (HIV) disease. A cluster randomised trial was conducted to investigate the effectiveness of engaging unpaid informal providers (IPs) to promote access in a rural district. The intervention consisted of training unpaid IPs in TB and HIV disease recognition, sputum specimen collection, appropriate referrals, and raising community awareness. METHODS: In total, six clusters were defined in the study areas...
2017: PloS One
https://www.readbyqxmd.com/read/28862830/plasma-levels-of-complement-factor-i-and-c4b-peptides-are-associated-with-hiv-suppression
#12
Boyue Wu, Zhengyu Ouyang, Christopher J Lyon, Wei Zhang, Tori Clift, Christopher R Bone, Boan Li, Zhen Zhao, Jason T Kimata, Xu G Yu, Ye Hu
Individuals who exhibit long-term HIV suppression and CD4 T-cell preservation without antiretroviral therapy are of great interest for HIV research. There is currently no robust method for rapid identification of these "HIV controller" subjects; however, HLA-B*57 (human leukocyte antigen (major histocompatibility complex), class I, B*57) genotype exhibits modest sensitivity for this phenotype. Complement C3b and C4b can influence HIV infection and replication, but studies have not examined their possible link to HIV controller status...
September 15, 2017: ACS Infectious Diseases
https://www.readbyqxmd.com/read/28854905/traditional-healer-treatment-of-hiv-persists-in-the-era-of-art-a-mixed-methods-study-from-rural-south-africa
#13
Carolyn M Audet, Sizzy Ngobeni, Ryan G Wagner
BACKGROUND: Human immunodeficiency virus (HIV) substantially contributes to the burden of disease and health care provision in sub-Saharan Africa, where traditional healers play a major role in care, due to both their accessibility and acceptability. In rural, northeastern South Africa, people living with HIV often ping-pong between traditional healers and allopathic providers. METHODS: We conducted 27 in-depth interviews and 133 surveys with a random sample of traditional healers living in Bushbuckridge, South Africa, where anti-retroviral therapy (ART) is publicly available, to learn: (1) healer perspectives about which HIV patients they choose to treat; (2) the type of treatment offered; (3) outcomes expected, and; (4) the cost of delivering treatment...
August 30, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28837563/demographic-clinical-and-behavioural-determinants-of-hiv-serostatus-non-disclosure-to-sex-partners-among-hiv-infected-pregnant-women-in-the-eastern-cape-south-africa
#14
Oladele Vincent Adeniyi, Anthony Idowu Ajayi, Nonkosi Selanto-Chairman, Daniel Ter Goon, Gerry Boon, Yusimi Ordaz Fuentes, George Justus Hofmeyr, Gordana Avramovic, Craig Carty, John Lambert
OBJECTIVES: Drawing from a baseline sample of a cohort study, the study examines the extent and correlates of serostatus non-disclosure to sex partners and family members, and reasons for non-disclosure among HIV-infected pregnant women in the Eastern Cape Province, South Africa. METHODS: This longitudinal cohort study recruited 1709 pregnant women living with HIV who attended three of the largest maternity centres in the Eastern Cape, South Africa, for delivery between September 2015 and May 2016...
2017: PloS One
https://www.readbyqxmd.com/read/28830406/exploring-attitudes-and-perceptions-of-patients-and-staff-towards-an-after-hours-co-pay-clinic-supplementing-free-hiv-services-in-kampala-uganda
#15
Adelline Twimukye, Rachel King, Walter Schlech, Faridah Mayanja Zawedde, Tom Kakaire, Rosalind Parkes-Ratanshi
BACKGROUND: There has been a rapid scale up of HIV services and access to anti-retroviral therapy in Africa over the last 10 years as a result of multilateral donor funding mechanisms. However, in order to continue to expand and to sustain these services it is important that "in country" options are explored. This study sought to explore attitudes and perceptions of people living with HIV (PLHIV) and health care staff towards using a fee-based "after hours" clinic (AHC) at the Infectious Diseases Institute (IDI) in Kampala, Uganda...
August 22, 2017: BMC Health Services Research
https://www.readbyqxmd.com/read/28819511/male-partner-involvement-in-the-prevention-of-mother-to-child-transmission-of-hiv-infection-in-mwanza-region-tanzania
#16
Munda Elias, Elia John Mmbaga, Ahmed Abade Mohamed, Rogath Saika Kishimba
INTRODUCTION: Globally, there are 3.3 million children < 15 years of age living with HIV infection. About 95% of HIV infected children have acquired infection from their mothers. Although new pediatric HIV infection in Tanzania has declined by 48% and Prevention of Mother to Child Transmission (PMTCT) coverage of highly active anti-retroviral therapy (HAART) has increased to 77%, the MTCT rate remains high (15%). Poor male partner involvement in PMTCT services is one of the factors contributing to reduced effectiveness of the PMTCT and hence failure to achieve the elimination of maternal to child transmission of HIV...
2017: Pan African Medical Journal
https://www.readbyqxmd.com/read/28816417/docking-field-based-qsar-and-pharmacophore-studies-on-the-substituted-pyrimidine-derivatives-targeting-hiv-1-reverse-transcriptase
#17
Ningning Fan, Shuang Zhang, Tao Sheng, Liang Zhao, Zhenming Liu, Junyi Liu, Xiaowei Wang
HIV-1 reverse transcriptase (RT) is one of the most important enzymes required for viral replication, thus acting as an attractive target for anti-retroviral therapy. Pyrimidine analogues reportedly have selective inhibition on HIV-1 RT with favorable antiviral activities in our previous study. To further explore the relationship between inhibitory activity and pharmacophoric characteristics, field-based QSAR models were generated and validated using Schrodinger Suite (correlation coefficient of 0.8078, cross-validated value of 0...
August 17, 2017: Chemical Biology & Drug Design
https://www.readbyqxmd.com/read/28801671/the-cpg-sites-of-the-cbx3-ubiquitous-chromatin-opening-element-are-critical-structural-determinants-for-the-anti-silencing-function
#18
Jessica Kunkiel, Natascha Gödecke, Mania Ackermann, Dirk Hoffmann, Axel Schambach, Nico Lachmann, Dagmar Wirth, Thomas Moritz
Suppression of therapeutic transgene expression from retroviral gene therapy vectors by epigenetic defence mechanisms represents a problem that is particularly encountered in pluripotent stem cells (PSCs) and their differentiated progeny. Transgene expression in these cells, however, can be stabilised by CpG-rich ubiquitous chromatin opening elements (UCOEs). In this context we recently demonstrated profound anti-silencing properties for the small (679 bp) CBX3-UCO element and we now confirmed this observation in the context of the defined murine chromosomal loci ROSA26 and TIGRE...
August 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28798420/hiv-1-tat-induced-diarrhea-evokes-an-enteric-glia-dependent-neuroinflammatory-response-in-the-central-nervous-system
#19
Giuseppe Esposito, Elena Capoccia, Stefano Gigli, Marcella Pesce, Eugenia Bruzzese, Alessandra D'Alessandro, Carla Cirillo, Alessandro di Cerbo, Rosario Cuomo, Luisa Seguella, Luca Steardo, Giovanni Sarnelli
Despite the effectiveness of combined anti-retroviral therapy, human immunodeficiency virus (HIV) infected-patients frequently report diarrhea and neuropsychological deficits. It is claimed that the viral HIV-1 Trans activating factor (HIV-1 Tat) protein is responsible for both diarrhea and neurotoxic effects, but the underlying mechanisms are not known. We hypothesize that colonic application of HIV-1 Tat activates glial cells of the enteric nervous system (EGCs), leading to a neuroinflammatory response able to propagate to the central nervous system...
August 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28797021/personalized-risk-index-for-neurocognitive-decline-among-people-with-well-controlled-hiv-infection
#20
Tracy Yuen, Marie-Josée Brouillette, Lesley K Fellows, Ronald J Ellis, Scott Letendre, Robert Heaton, Nancy Mayo
BACKGROUND: Little is known about the predictors of neurocognitive decline in HIV+ individuals with good virological control. Identification of modifiable risk factors would allow targeted interventions to reduce the risk of decline in higher risk individuals. The objective of this study was to develop a risk index to predict neurocognitive decline over 3 years in aviremic HIV+ individuals. METHODS: As part of the CNS HIV Anti-Retroviral Therapy Effects Research (CHARTER) study, HIV+ adults completed clinical evaluation and neuropsychological tests every 6 months...
September 1, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
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