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https://www.readbyqxmd.com/read/28549840/phosphatidylinositol-4-5-bisphosphate-mediated-pathophysiological-effect-of-hiv-1-tat-protein
#1
REVIEW
Bruno Beaumelle, Petra Tóth, Olfat A Malak, Christophe Chopard, Gildas Loussouarn, Nicolas Vitale
Human immunodeficiency virus (HIV)-infected cells actively release the transcriptional activator (Tat) viral protein that is required for efficient HIV gene transcription. Extracellular Tat is able to enter uninfected cells. We recently reported that internalized Tat escapes endosomes to reach the cytosol and is then recruited to the plasma membrane by phosphatidylinositol 4,5-bisphosphate (PtdIns(4,5)P2). As a consequence, Tat strongly impairs different critical cellular functions in several cell types. Here we will review recent evidences showing that Tat, by affecting the interaction of key cellular effectors with PtdIns(4,5)P2, blocks exocytosis from neuroendocrine cells, perturbs the synaptic vesicle exo-endocytosis cycle, prevents efficient phagocytosis by macrophages, and alters potassium channel activity in cardiac cells...
May 23, 2017: Biochimie
https://www.readbyqxmd.com/read/28549522/pathobiology-of-human-papillomaviruses-in-human-immunodeficiency-virus-infected-persons
#2
REVIEW
Uma Krishnamurti, Elizabeth R Unger
There is a complex interrelationship between human papillomaviruses (HPV) and human immunodeficiency viruses (HIV) that has been recognized from the start of the HIV epidemic. Cervical cancer was used as a surveillance indicator for acquired immunodeficiency syndrome (AIDS) before definitive identification of the viral etiology of either condition were known. Careful epidemiologic studies combined with clinical and laboratory measures of HPV, HPV-associated disease, and HIV have helped us understand many aspects of the relationship between these two virus groups; however, questions remain...
April 6, 2017: Seminars in Diagnostic Pathology
https://www.readbyqxmd.com/read/28546080/exosomes-in-hiv-infection-a-review-and-critical-look
#3
REVIEW
Joel Henrique Ellwanger, Tiago Degani Veit, José Artur Bogo Chies
Exosomes are nanovesicles released into the extracellular medium by different cell types. These vesicles carry a variety of protein and RNA cargos, and have a central role in cellular signaling and regulation. A PubMed search using the term "exosomes" finds 67 articles published in 2006. Ten years later, the same search returns approximately 1200 results for 2016 alone. The growing interest in exosomes within the scientific community reflects the different roles exerted by extracellular vesicles in biological systems and diseases...
May 22, 2017: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/28545675/changes-in-viral-hepatitis-b-screening-practices-over-time-in-west-african-hiv-clinics
#4
P A Coffie, A Patassi, A Doumbia, G Bado, E Messou, A Minga, E Allah-Kouadio, D M Zannou, M Seydi, A R Kakou, F Dabis, G Wandeler
BACKGROUND: We aimed to describe changes in hepatitis B screening practices over a 3-year period among HIV-infected patients in West Africa. METHODS: A medical chart review was conducted in urban HIV treatment centers in Ivory Coast (3 sites), Benin, Burkina Faso, Senegal, and Togo (1 site each). Among patients who started antiretroviral treatment between 2010 and 2012, 100 per year were randomly selected from each clinic. Demographic, clinical, and laboratory data was collected using a standardized questionnaire...
May 22, 2017: Médecine et Maladies Infectieuses
https://www.readbyqxmd.com/read/28544500/non-communicable-diseases-and-hiv-care-and-treatment-models-of-integrated-service-delivery
#5
REVIEW
Malia Duffy, Bisola Ojikutu, Soa Andrian, Elaine Sohng, Thomas Minior, Lisa R Hirschhorn
OBJECTIVES: Non-communicable diseases (NCD) are a growing cause of morbidity in low-income countries including in people living with Human Immunodeficiency Virus (HIV). Integration of NCD and HIV services can build upon experience with chronic care models from HIV programs. We describe models of NCD and HIV integration, challenges, and lessons learned. METHODS: Literature review of articles on integrated NCD and HIV programs in low-income countries and key informant interviews with leaders of identified integrated NCD and HIV programs...
May 24, 2017: Tropical Medicine & International Health: TM & IH
https://www.readbyqxmd.com/read/28542796/interleukin-2-as-an-adjunct-to-antiretroviral-therapy-for-hiv-positive-adults
#6
REVIEW
Jennifer Onwumeh, Charles I Okwundu, Tamara Kredo
BACKGROUND: Human immunodeficiency virus (HIV) continues to be a leading cause of morbidity and mortality, particularly in sub-Saharan Africa. Although antiretroviral drugs have helped to improve the quality of life and life expectancy of HIV-positive individuals, there is still a need to explore other interventions that will help to further reduce the disease burden. One potential strategy is the use of interleukin-2 (IL-2) in combination with antiretroviral therapy (ART). IL-2 is a cytokine that regulates the proliferation and differentiation of lymphocytes and may help to boost the immune system...
May 25, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28542309/predictors-of-loss-to-follow-up-among-patients-on-art-at-a-rural-hospital-in-kwazulu-natal-south-africa
#7
Rachel Arnesen, Anthony P Moll, Sheela V Shenoi
INTRODUCTION: Improved HIV outcomes as a result of expanded antiretroviral therapy (ART) access is threatened by increasing rates of loss to follow up (LTFU) among those on ART, largely reported in urban populations. Some reports suggest that LTFU rates are overestimated due to patient movement to other facilities and inadequate medical records. STUDY OBJECTIVE: To define the proportion disengaging from HIV care as well as the characteristics of those LTFU in order to design and implement appropriate interventions to increase retention...
2017: PloS One
https://www.readbyqxmd.com/read/28542092/approach-to-skin-and-soft-tissue-infections-in-non-hiv-immunocompromised-hosts
#8
Victoria E Burke, Fred A Lopez
PURPOSE OF REVIEW: Skin and soft tissue infections are frequent contributors to morbidity and mortality in the immunocompromised host. This article reviews the changing epidemiology and clinical manifestations of the most common cutaneous pathogens in non-HIV immunocompromised hosts, including patients with solid organ transplants, stem cell transplants, solid tumors, hematologic malignancies, and receiving chronic immunosuppressive therapy for inflammatory disorders. RECENT FINDINGS: Defects in the innate or adaptive immune response can predispose the immunocompromised host to certain cutaneous infections in a predictive fashion...
May 24, 2017: Current Opinion in Infectious Diseases
https://www.readbyqxmd.com/read/28540221/circumcision-and-its-effects-in-africa
#9
REVIEW
Taiwo Akeem Lawal, E Oluwabunmi Olapade-Olaopa
Male circumcision is one of the most commonly performed procedures in Africa, with a wide variation between the different regions on the practice. This is because circumcision is often done for religious and cultural or traditional reasons, which includes being part of rituals or rite of passage to adulthood. There had been few medical indications for the procedure until the human immunodeficiency virus (HIV)/acquired immune deficiency syndrome (AIDS) pandemic, which is prevalent in many of the countries in the region...
April 2017: Translational Andrology and Urology
https://www.readbyqxmd.com/read/28538786/routine-hiv-testing-in-men-who-have-sex-with-men-from-risk-to-prevention
#10
Bruna Robba Lara Redoschi, Eliana Miura Zucchi, Claudia Renata Dos Santos Barros, Vera Silvia Facciolla Paiva
We conducted a critical review of the literature on recurrent use of HIV testing in men who have sex with men (MSM). We performed a narrative review of the literature in which we analyzed the various conceptions on frequent testing over time, the implications for health programs, and the main social markers that influence the incorporation of HIV testing as routine care. Although it has existed since the 1990s, recurrent testing among MSM was frequently interpreted as increased exposure to HIV due to lack of condom use, and therefore as "unnecessary" testing...
May 18, 2017: Cadernos de Saúde Pública
https://www.readbyqxmd.com/read/28538165/the-complexity-in-herpesvirus-entry
#11
REVIEW
Karthik Sathiyamoorthy, Jia Chen, Richard Longnecker, Theodore S Jardetzky
Enveloped viruses have evolved diverse transmembrane proteins and protein complexes to enable host cell entry by regulating and activating membrane fusion in a target cell-specific manner. In general terms, the entry process requires a receptor binding step, an activation step and a membrane fusion step, which can be encoded within a single viral protein or distributed among multiple viral proteins. HIV and influenza virus, for example, encode all of these functions in a single trimeric glycoprotein, HIV env or influenza virus hemagglutinin (HA)...
May 21, 2017: Current Opinion in Virology
https://www.readbyqxmd.com/read/28537936/zidovudine-use-in-pregnancy-and-congenital-malformations-meta-analysis-and-bayesian-incorporation-of-medicaid-data
#12
Kathryn Rough, Jenny W Sun, George R Seage, Paige L Williams, Krista F Huybrechts, Brian T Bateman, Sonia Hernandez-Diaz
OBJECTIVE: There is inconsistent evidence that zidovudine use during pregnancy increases overall, cardiac, and male genital malformations. DESIGN: We conducted a systematic review and meta-analysis of zidovudine use and malformations and, using Bayesian methods, combined it with data from a cohort study of mother-infant pairs in the nationwide Medicaid Analytic eXtract (MAX). METHODS: Using MAX data (2000-2010), we identified pregnant women with HIV treated with antiretroviral therapy (ART)...
May 23, 2017: AIDS
https://www.readbyqxmd.com/read/28537935/cardiovascular-toxicity-of-abacavir-a-clinical-controversy-in-need-of-a-pharmacological-explanation
#13
Angeles Alvarez, Samuel Orden, Isabel Andújar, Victor Collado-Diaz, Sara Núñez-Delgado, Maria Jose Galindo, Vicente Estrada, Nadezda Apostolova, Juan V Esplugues
: There is a long-lasting controversy surrounding an association between Abacavir (ABC) and an increased risk of cardiovascular (CV) disease in HIV-positive subjects. While differing in their specifics, a number of published cohort studies and clinical trials support such an association, usually relating it to recent exposure to the drug, independently of traditional predisposing factors. However, other clinical trials have failed to reveal such a relation, and have pointed to methodological differences to explain discrepancies...
May 23, 2017: AIDS
https://www.readbyqxmd.com/read/28537651/the-burden-of-hiv-associated-neurocognitive-disorder-hand-in-post-haart-era-a-multidisciplinary-review-of-the-literature
#14
G Caruana, G Vidili, P A Serra, P Bagella, A Spanu, V Fiore, D F Calvisi, R Manetti, G Rocchitta, S Nuvoli, S Babudieri, M M Simile, G Madeddu
OBJECTIVE: The purpose of the present multidisciplinary review is to give an updated insight into the most recent findings regarding the pathophysiology, diagnosis and therapeutics of HIV-associated neurocognitive disorder (HAND). MATERIALS AND METHODS: We performed a comprehensive search, through electronic databases (Pubmed - MEDLINE) and search engines (Google Scholar), of peer-reviewed publications (articles and reviews) and conferences proceedings on HAND pathophysiology, diagnosis, and therapy, from 1999 to 2016...
May 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28536921/progressive-multifocal-leukoencephalopathy-in-patients-treated-with-fumaric-acid-esters-a-review-of-19-cases
#15
Robbert-Jan Gieselbach, Annemarie H Muller-Hansma, Martijn T Wijburg, Marjolein S de Bruin-Weller, Bob W van Oosten, Dennis J Nieuwkamp, Frank E Coenjaerts, Mike P Wattjes, Jean-Luc Murk
Progressive multifocal leukoencephalopathy (PML) is a rare and potentially fatal condition caused by a brain infection with JC polyomavirus (JCV). PML develops almost exclusively in immunocompromised patients and has recently been associated with use of fumaric acid esters (FAEs), or fumarates. We reviewed the literature and the Dutch and European pharmacovigilance databases in order to identify all available FAE-associated PML cases and distinguish possible common features among these patients. A total of 19 PML cases associated with FAE use were identified...
May 23, 2017: Journal of Neurology
https://www.readbyqxmd.com/read/28536861/heterogeneity-of-neuropsychological-impairment-in-hiv-infection-contributions-from-mild-cognitive-impairment
#16
REVIEW
Kathryn N Devlin, Tania Giovannetti
Despite longstanding acknowledgement of the heterogeneity of HIV-associated neurocognitive disorders (HAND), existing HAND diagnostic methods classify according to the degree of impairment, without regard to the pattern of neuropsychological strengths and weaknesses. Research in mild cognitive impairment (MCI) has demonstrated that classifying individuals into subtypes by both their level and pattern of impairment, using either conventional or statistical methods, has etiologic and prognostic utility. Methods for characterizing the heterogeneity of MCI provide a framework that can be applied to other disorders and may be useful in clarifying some of the current challenges in the study of HAND...
May 24, 2017: Neuropsychology Review
https://www.readbyqxmd.com/read/28536344/aptamer-technology-adjunct-therapy-for-malaria
#17
REVIEW
Nik Abdul Aziz Nik Kamarudin, Nurul Adila Mohammed, Khairul Mohd Fadzli Mustaffa
Malaria is a life-threatening parasitic infection occurring in the endemic areas, primarily in children under the age of five, pregnant women, and patients with human immunodeficiency virus and acquired immunodeficiency syndrome (HIV)/(AIDS) as well as non-immune individuals. The cytoadherence of infected erythrocytes (IEs) to the host endothelial surface receptor is a known factor that contributes to the increased prevalence of severe malaria cases due to the accumulation of IEs, mainly in the brain and other vital organs...
January 4, 2017: Biomedicines
https://www.readbyqxmd.com/read/28536303/implementing-a-fee-for-service-cervical-cancer-screening-and-treatment-program-in-cameroon-challenges-and-opportunities
#18
Geneva DeGregorio, Simon Manga, Edith Kiyang, Florence Manjuh, Leslie Bradford, Preetam Cholli, Richard Wamai, Rebecca Ogembo, Zacharie Sando, Yuxin Liu, Lisa Kennedy Sheldon, Kathleen Nulah, Thomas Welty, Edith Welty, Javier Gordon Ogembo
BACKGROUND: Cervical cancer screening is one of the most effective cancer prevention strategies, but most women in Africa have never been screened. In 2007, the Cameroon Baptist Convention Health Services, a large faith-based health care system in Cameroon, initiated the Women's Health Program (WHP) to address this disparity. The WHP provides fee-for-service cervical cancer screening using visual inspection with acetic acid enhanced by digital cervicography (VIA-DC), prioritizing care for women living with HIV/AIDS...
May 23, 2017: Oncologist
https://www.readbyqxmd.com/read/28534892/minimizing-next-generation-sequencing-errors-for-hiv-drug-resistance-testing
#19
José A Fernández-Caballero, Natalia Chueca, Eva Poveda, Federico García
Next-generation sequencing prototypes for the routine diagnosis of resistance to antiretrovirals approved for the treatment of HIV infection are now being used in many clinical diagnostic laboratories. As some of the next-generation sequencing platforms may be a source of errors, it is necessary to improve the currently available protocols and implement bioinformatic tools that may help to correctly identify the presence of resistance mutations with clinical impact. Several studies have addressed these issues in recent years...
May 23, 2017: AIDS Reviews
https://www.readbyqxmd.com/read/28534889/hiv-1-infection-in-persons-homozygous-for-ccr5-%C3%AE-32-allele-the-next-case-and-the-review
#20
Joanna Smoleń-Dzirba, Magdalena Rosińska, Janusz Janiec, Marek Beniowski, Mariusz Cycoń, Jolanta Bratosiewicz-Wąsik, Tomasz J Wąsik
CC-chemokine receptor 5 serves as the coreceptor for the HIV-1 R5 strains, which are responsible for the majority of HIV transmissions. A deletion of 32 nucleotides in the gene encoding this receptor (termed CCR5-Δ32) leads to the suppression of CC-chemokine receptor 5 presentation at the cell surface, thus impeding process of HIV entry into the cell. Individuals homozygous for the CCR5-Δ32 allele are resistant to infection with HIV-1 R5 strains, and are extremely rare among HIV-1-infected individuals. We have described a case of person homozygous for CCR5-Δ32, who was infected with subtype B HIV-1...
May 23, 2017: AIDS Reviews
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