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https://www.readbyqxmd.com/read/28811321/identification-of-drivers-for-the-metamorphic-transition-of-hiv-1-reverse-transcriptase
#1
Xunhai Zheng, Geoffrey A Mueller, Kyungmin Kiim, Lalith Perera, Eugene F DeRose, Robert E London
Recent structural characterizations of the p51 and p66 monomers has established an important starting point for understanding the maturation pathway of the HIV-1 reverse transcriptase p66/p51 heterodimer. This process requires a metamorphic transition of the polymerase domain leading to formation of a p66/p66' homodimer that exists as a structural heterodimer. In order to better understand the drivers for this metamorphic transition, we have performed NMR studies of (15)N-labeled RT216 - a construct that includes the fingers and most of the palm domains...
August 15, 2017: Biochemical Journal
https://www.readbyqxmd.com/read/28807605/adjuvant-hpv-vaccination-for-anal-cancer-prevention-in-hiv-positive-men-who-have-sex-with-men-the-time-is-now
#2
Ashish A Deshmukh, Scott B Cantor, Elisabeth Fenwick, Elizabeth Y Chiao, Alan G Nyitray, Elizabeth A Stier, Stephen E Goldstone, Timothy Wilkin, Jagpreet Chhatwal
IMPORTANCE: Outcomes of treating high-grade squamous intraepithelial lesions (HSIL), a precursor to anal cancer, remain uncertain. Emerging evidence shows that post HSIL treatment adjuvant quadrivalent human papillomavirus (qHPV) vaccination improves the effectiveness of treatment. However, no recommendations exist regarding the use of qHPV vaccine as an adjuvant form of therapy. Our objective was to determine whether post-treatment adjuvant vaccination should be adopted in HIV-infected MSM (individuals at highest risk for anal cancer) on the basis of cost-effectiveness determined using existing evidence or whether future research is needed...
August 11, 2017: Vaccine
https://www.readbyqxmd.com/read/28803072/palliative-care-development-in-tajikistan
#3
Nigora Abidjanova
Tajikistan's health system has undergone a series of complex changes associated with reforms aimed at the transition to a more sophisticated control mechanism, financing and operation. As in many developing countries, there is an increase in morbidity and mortality from cancer and chronic diseases, including tuberculosis and HIV. Attention is needed by the state for the development of cost-effective palliative care that will be integrated into the existing public health system. A recent palliative care country needs assessment identified the following areas of work that need to be addressed for palliative care to be implemented: • educating and training of health care professionals, • raising public awareness about palliative care, • making essential palliative care medicines available, • developing the necessary regulatory documents for palliative care development, • developing educational curricula and materials, • integrating palliative care into the medical and nursing universities and schools, • Creating models of palliative care services for home and inpatient facilities...
August 9, 2017: Journal of Pain and Symptom Management
https://www.readbyqxmd.com/read/28782457/prospective-memory-in-youth-with-perinatally-acquired-hiv-infection
#4
Lynnette L Harris, Miriam C Chernoff, Sharon L Nichols, Paige L Williams, Patricia A Garvie, Cenk Yildirim, Stephen R McCauley, Steven Paul Woods
Youth with perinatal HIV infection (PHIV) are at increased risk for neurocognitive impairment (NCI). Prospective memory (PM) is a complex neurocognitive function that has been shown to be impaired in adults with HIV disease and independently associated with poorer daily living skills, including medication nonadherence. The current study sought to determine the presence and extent of PM deficits in youth with PHIV. Participants included 173 youth with PHIV and 85 youth perinatally HIV-exposed but uninfected (PHEU), mean age 14...
August 7, 2017: Child Neuropsychology: a Journal on Normal and Abnormal Development in Childhood and Adolescence
https://www.readbyqxmd.com/read/28782147/adolescent-nephrology-an-emerging-frontier-for-kidney-care-in-sub-saharan-africa
#5
REVIEW
Bianca Davidson, Ikechi Okpechi, Mignon McCulloch, Nicola Wearne
Adolescents make up a quarter of the world's population and are important users of health services. In South Africa little is known about the extent of renal disease or outcomes in this group. Adolescents are a vulnerable age group, due to their neurocognitive development, engagement in high-risk social activities, prevalence of mental illness and increasing rates of HIV infection. In Africa access to renal replacement therapy is rationed, therefore the focus of renal disease must be one of prevention rather than dealing with the management of end stage renal disease...
August 6, 2017: Nephrology
https://www.readbyqxmd.com/read/28777120/multicenter-aids-cohort-study-quantitative-coronary-plaque-progression-study-rationale-and-design
#6
Rine Nakanishi, Wendy S Post, Kazuhiro Osawa, Eranthi Jayawardena, Michael Kim, Nasim Sheidaee, Negin Nezarat, Sina Rahmani, Nicholas Kim, Nicolai Hathiramani, Shriraj Susarla, Frank Palella, Mallory Witt, Michael J Blaha, Todd T Brown, Lawrence Kingsley, Sabina A Haberlen, Christopher Dailing, Matthew J Budoff
BACKGROUND AND AIM: The association of HIV with coronary atherosclerosis has been established; however, the progression of coronary atherosclerosis over time among participants with HIV is not well known. The Multicenter AIDS Cohort Study Quantitative Coronary Plaque Progression Study is a large prospective multicenter study quantifying progression of coronary plaque assessed by serial coronary computed tomography angiography (CTA). PATIENTS AND METHODS: HIV-infected and uninfected men who were enrolled in the Multicenter AIDS Cohort Study Cardiovascular Substudy were eligible to complete a follow-up contrast coronary CTA 3-6 years after baseline...
August 2, 2017: Coronary Artery Disease
https://www.readbyqxmd.com/read/28775288/a-polypeptide-from-the-junction-region-sequence-of-ews-fli1-inhibits-ewing-s-sarcoma-cells-interacts-with-the-ews-fli1-and-partner-proteins
#7
Krishna Priya Thangaretnam, Gopal Gopisetty, Priya Ramanathan, Thangarajan Rajkumar
The EWS-FLI1 chimeric protein uniquely expressed in Ewing's sarcoma has an obligate role in its aetiology. In our previous report we showed that ectopic expression of the DNA sequences form the junction region (a.a 251-280) can inhibit Ewing's sarcoma cell growth. In the present report, we introduced a peptide (TAT/NLS/EWS-PEP) comprising of thirty amino acids spanning the junction in conjunction with HIV-1-trans-activating (TAT) and nuclear localization signal sequence (NLS). Peptide uptake and localization studies revealed presence of peptide in ~99% of transduced cells and in the nucleus...
August 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28774873/a-growth-reference-for-mid-upper-arm-circumference-for-age-among-school-age-children-and-adolescents-and-validation-for-mortality-growth-curve-construction-and-longitudinal-cohort-study
#8
Lazarus Mramba, Moses Ngari, Martha Mwangome, Lilian Muchai, Evasius Bauni, A Sarah Walker, Diana M Gibb, Gregory Fegan, James A Berkley
Objectives To construct growth curves for mid-upper-arm circumference (MUAC)-for-age z score for 5-19 year olds that accord with the World Health Organization growth standards, and to evaluate their discriminatory performance for subsequent mortality.Design Growth curve construction and longitudinal cohort study.Setting United States and international growth data, and cohorts in Kenya, Uganda, and Zimbabwe.Participants The Health Examination Survey (HES)/National Health and Nutrition Examination Survey (NHANES) US population datasets (age 5-25 years), which were used to construct the 2007 WHO growth reference for body mass index in this age group, were merged with an imputed dataset matching the distribution of the WHO 2006 growth standards age 2-6 years...
August 3, 2017: BMJ: British Medical Journal
https://www.readbyqxmd.com/read/28770591/phased-implementation-of-spaced-clinic-visits-for-stable-hiv-positive-patients-in-rwanda-to-support-treat-all
#9
REVIEW
Sabin Nsanzimana, Eric Remera, Muhayimpundu Ribakare, Tracy Burns, Sibongile Dludlu, Edward J Mills, Jeanine Condo, Heiner C Bucher, Nathan Ford
INTRODUCTION: In 2016, Rwanda implemented "Treat All," requiring the national HIV programme to increase antiretroviral (ART) treatment coverage to all people living with HIV. Approximately half of the 164,262 patients on ART have been on treatment for more than five years, and long-term retention of patients in care is an increasing concern. To address these challenges, the Ministry of Health has introduced a differentiated service delivery approach to reduce the frequency of clinical visits and medication dispensing for eligible patients...
July 21, 2017: Journal of the International AIDS Society
https://www.readbyqxmd.com/read/28759210/effective-conformational-sampling-in-explicit-solvent-with-gaussian-biased-accelerated-molecular-dynamics
#10
Qiang Shao, Weiliang Zhu
In this Article, a user-friendly Gaussian biased accelerated molecular dynamics (GbAMD) method is presented that uses a sum of Gaussians of potential energies as the biased force to accelerate the conformational sampling. The easy parameter setting of GbAMD is demonstrated in a variety of simulation tests for the conformational transitions of proteins with various complexity including the folding of Trpcage, GB1p, and HP35 peptides as well as the functional conformational changes of nCaM and HIV-1 PR proteins...
August 11, 2017: Journal of Chemical Theory and Computation
https://www.readbyqxmd.com/read/28754584/adolescent-to-adult-hiv-health-care-transition-from-the-perspective-of-adult-providers-in-the-united-states
#11
Amanda E Tanner, Morgan M Philbin, Alice Ma, Brittany D Chambers, Sharon Nichols, Sonia Lee, J Dennis Fortenberry
PURPOSE: The HIV Care Continuum highlights the need for HIV-infected youth to be tested, linked, and maintained in lifelong care. Care engagement is important for HIV-infected youth in order for them to stay healthy, maintain a low viral load, and reduce further transmission. One point of potential interruption in the care continuum is during health care transition from adolescent- to adult-centered HIV care. HIV-related health care transition research focuses mainly on youth and on adolescent clinic providers; missing is adult clinic providers' perspectives...
July 25, 2017: Journal of Adolescent Health: Official Publication of the Society for Adolescent Medicine
https://www.readbyqxmd.com/read/28752105/an-entry-competent-intermediate-state-of-the-hiv-1-envelope-glycoproteins
#12
Alon Herschhorn, Joseph Sodroski
The human immunodeficiency virus type 1 (HIV-1) envelope glycoproteins (Env) mediate viral entry and are the sole target of neutralizing antibodies. Recent studies show that the metastable HIV-1 Env trimer can transit among three conformational states: State 1, State 3, and State 2, corresponding to the "closed", "open" and intermediate conformations, respectively. During virus entry, binding to the CD4 receptor drives Env from state 1 to state 3. In the unliganded Env, transitions from the closed (State 1) conformation are restrained by intramolecular interactions among different Env residues, which regulate HIV-1 Env conformation...
2017: Receptors & Clinical Investigation
https://www.readbyqxmd.com/read/28746656/mortality-due-to-noncommunicable-diseases-in-brazil-1990-to-2015-according-to-estimates-from-the-global-burden-of-disease-study
#13
Deborah Carvalho Malta, Elisabeth França, Daisy Maria Xavier Abreu, Rosângela Durso Perillo, Maíra Coube Salmen, Renato Azeredo Teixeira, Valeria Passos, Maria de Fátima Marinho Souza, Meghan Mooney, Mohsen Naghavi
CONTEXT AND OBJECTIVE: Noncommunicable diseases (NCDs) are the leading health problem globally and generate high numbers of premature deaths and loss of quality of life. The aim here was to describe the major groups of causes of death due to NCDs and the ranking of the leading causes of premature death between 1990 and 2015, according to the Global Burden of Disease (GBD) 2015 study estimates for Brazil. DESIGN AND SETTING: Cross-sectional study covering Brazil and its 27 federal states...
May 2017: São Paulo Medical Journal, Revista Paulista de Medicina
https://www.readbyqxmd.com/read/28734516/pediatric-human-immunodeficiency-virus-continuum-of-care-a-concise-review-of-evidence-based-practice
#14
REVIEW
Megan E Gray, Phillip Nieburg, Rebecca Dillingham
Children and adolescents living with human immunodeficiency virus (HIV) represent a population that requires a unique approach to HIV care. Prevention, testing, initiation of antiretroviral therapy (ART), and retention and engagement in care are critical steps. Each step requires providers to address age-specific barriers, so that successful and prolonged viral suppression can occur. Adherence to ART, disclosure of HIV-positive status, and stigma are examples of struggles faced by youth, their families, and health care providers...
August 2017: Pediatric Clinics of North America
https://www.readbyqxmd.com/read/28725255/transition-into-adult-care-factors-associated-with-level-of-preparedness-among-adolescents-living-with-hiv-in-cambodia
#15
Siyan Yi, Chanrith Ngin, Khuondyla Pal, Vohith Khol, Sovannary Tuot, Sokunmealiny Sau, Pheak Chhoun, Gitau Mburu, Sok Chamreun Choub, Kolab Chhim, Penhsun Ly
BACKGROUND: Preparing adolescents for transition into adult care and supporting their acquisition of self-health care management skills is a critical determinant of their post-transition HIV care outcomes. However, there is a scarcity of research on effective transition strategies. This study explores factors associated with adolescent preparedness for transition into adult care in Cambodia. METHODS: In August 2016, a cross-sectional study was conducted among 223 adolescents living with HIV aged 15-17, randomly selected from 11 antiretroviral therapy clinics, utilizing a structured questionnaire...
2017: AIDS Research and Therapy
https://www.readbyqxmd.com/read/28720039/the-revamp-trial-to-evaluate-hiv-resistance-testing-in-sub-saharan-africa-a-case-study-in-clinical-trial-design-in-resource-limited-settings-to-optimize-effectiveness-and-cost-effectiveness-estimates
#16
Mark J Siedner, Mwebesa B Bwana, Mahomed-Yunus S Moosa, Michelle Paul, Selvan Pillay, Suzanne McCluskey, Isaac Aturinda, Kevin Ard, Winnie Muyindike, Pravikrishnen Moodley, Jaysingh Brijkumar, Tamlyn Rautenberg, Gavin George, Brent Johnson, Rajesh T Gandhi, Henry Sunpath, Vincent C Marconi
BACKGROUND: In sub-Saharan Africa, rates of sustained HIV virologic suppression remain below international goals. HIV resistance testing, while common in resource-rich settings, has not gained traction due to concerns about cost and sustainability. OBJECTIVE: We designed a randomized clinical trial to determine the feasibility, effectiveness, and cost-effectiveness of routine HIV resistance testing in sub-Saharan Africa. APPROACH: We describe challenges common to intervention studies in resource-limited settings, and strategies used to address them, including: (1) optimizing generalizability and cost-effectiveness estimates to promote transition from study results to policy; (2) minimizing bias due to patient attrition; and (3) addressing ethical issues related to enrollment of pregnant women...
July 18, 2017: HIV Clinical Trials
https://www.readbyqxmd.com/read/28719652/long-term-follow-up-of-human-t-cell-responses-to-conserved-hiv-1-regions-elicited-by-dna-simian-adenovirus-mva-vaccine-regimens
#17
Nathifa Moyo, Nicola J Borthwick, Edmund G Wee, Silvia Capucci, Alison Crook, Lucy Dorrell, Tomáš Hanke
BACKGROUND: Durability of vaccine-elicited immune responses is one of the key determinants for vaccine success. Our aim is to develop a vaccination strategy against the human immunodeficiency virus type 1 (HIV-1), which induces protective and durable CD8+ T-cell responses. The central theorem of our approach is to focus T cells on highly conserved regions of the HIV-1 proteome and this is achieved through the use of the first-generation conserved vaccine immunogen HIVconsv. This immunogen vectored by plasmid DNA, simian adenovirus and poxvirus MVA was tested in healthy, HIV-1-negative adults in UK and induced high magnitudes of HIVconsv-specific plurifunctional CD8+ T cells capable of in vitro HIV-1 inhibition...
2017: PloS One
https://www.readbyqxmd.com/read/28718489/-profile-of-transvestites-and-transgender-women-tuberculosis-and-hiv-aids-in-the-city-of-s%C3%A3-o-paulo
#18
Sérgio Ferreira, Priscila Maria Stolses Bergamo Francisco, Péricles Alves Nogueira
Objective: To characterize the profile of transvestites and transgender women participating in a survey regarding tuberculosis and HIV/Aids in the city of São Paulo. Method: This cross-sectional study employed the Knowledge, Attitudes and Practices (KAP) questionnaire adapted for data collection. Sociodemographic aspects as well as aspects related to history of imprisonment, process of gender transition, use of condoms, previous treatment of sexually transmitted diseases and tuberculosis and knowledge regarding HIV/Aids were addressed...
December 2016: Revista Panamericana de Salud Pública, Pan American Journal of Public Health
https://www.readbyqxmd.com/read/28716149/transition-into-adult-care-factors-associated-with-level-of-preparedness-among-adolescents-living-with-hiv-in-cambodia
#19
Siyan Yi, Chanrith Ngin, Khuondyla Pal, Vohith Khol, Sovannary Tuot, Sokunmealiny Sau, Pheak Chhoun, Gitau Mburu, Sok Chamreun Choub, Kolab Chhim, Penhsun Ly
BACKGROUND: Preparing adolescents for transition into adult care and supporting their acquisition of self-health care management skills is a critical determinant of their post-transition HIV care outcomes. However, there is a scarcity of research on effective transition strategies. This study explores factors associated with adolescent preparedness for transition into adult care in Cambodia. METHODS: In August 2016, a cross-sectional study was conducted among 223 adolescents living with HIV aged 15-17, randomly selected from 11 antiretroviral therapy clinics, utilizing a structured questionnaire...
July 17, 2017: AIDS Research and Therapy
https://www.readbyqxmd.com/read/28715986/the-hiv-care-cascade-among-individuals-under-community-supervision-in-baltimore-maryland
#20
Nickolas Zaller, Michael Gordon, Lauri Bazerman, Irene Kuo, Curt Beckwith
An estimated one in seven HIV-infected individuals pass through U.S. correctional facilities each year. Transitioning from correctional to community settings may increase HIV treatment interruptions and increase the risk of continued HIV transmission in the community. This study assessed access to HIV providers in the community, antiretroviral treatment, and viral suppression to inform the development of interventions to improve HIV treatment outcomes among individuals involved in community corrections. The sample included 100 individuals under community supervision (probation or parole) in Baltimore, Maryland...
July 2017: Journal of Correctional Health Care
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