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HIV and Inflammation

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https://www.readbyqxmd.com/read/29778137/deciphering-natural-control-of-hiv-1-a-valuable-strategy-to-achieve-antiretroviral-therapy-termination
#1
REVIEW
Hamza Loucif, Steven Gouard, Xavier Dagenais-Lussier, Armstrong Murira, Simona Stäger, Cécile Tremblay, Julien Van Grevenynghe
Antiretroviral therapy (ART) has dramatically reduced HIV-1-associated morbidity and mortality, and has transformed HIV-1 infection into a manageable chronic condition by suppressing viral replication. However, despite recent patient care improvements, ART still fails to cure HIV-1 infection due to the inability to counteract immune defects and metabolic disturbances that are associated with residual inflammation alongside viral persistence. Life-long drug administration also results in multiple side-effects in patients including lipodystrophy and insulin resistance...
April 2018: Cytokine & Growth Factor Reviews
https://www.readbyqxmd.com/read/29772664/the-cholinergic-anti-inflammatory-response-and-the-role-of-macrophages-in-hiv-induced-inflammation
#2
REVIEW
Manuel Delgado-Vélez, José A Lasalde-Dominicci
Macrophages are phagocytic immune cells that protect the body from foreign invaders and actively support the immune response by releasing anti- and proinflammatory cytokines. A seminal finding revolutionized the way macrophages are seen. The expression of the neuronal alpha7 nicotinic acetylcholine receptor (α7-nAChR) in macrophages led to the establishment of the cholinergic anti-inflammatory response (CAR) in which the activation of this receptor inactivates macrophage production of proinflammatory cytokines...
May 16, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29771268/hiv-disease-is-associated-with-increased-biomarkers-of-endothelial-dysfunction-despite-viral-suppression-on-long-term-antiretroviral-therapy-in-botswana
#3
Mosepele Mosepele, Terence Mohammed, Lucy Mupfumi, Sikhulile Moyo, Kara Bennett, Shahin Lockman, Linda C Hemphill, Virginia A Triant
BACKGROUND: Untreated HIV infection is associated with increased biomarkers of endothelial dysfunction. However, the predictors and degree of endothelial dysfunction among virally suppressed HIV-infected adults on long-term antiretroviral therapy (ART) have not been well studied in sub-Saharan Africa (SSA). METHODS: We enrolled 112 HIV-infected adults with virological suppression on long-term ART and 84 HIV-uninfected controls in Botswana. We measured plasma levels of markers of endothelial injury [soluble vascular adhesion molecule 1 (VCAM-1), intercellular adhesion molecule 1 (ICAM-1) and E-selectin] and plasma levels of biomarkers of inflammation [interleukin 6 (IL-6)] and monocyte activation (sCD163)...
May 14, 2018: Cardiovascular Journal of Africa
https://www.readbyqxmd.com/read/29770360/biomarkers-associated-with-death-after-initiating-treatment-for-tuberculosis-and-hiv-in-patients-with-very-low-cd-4-cells
#4
Fred R Sattler, Daniel Chelliah, Xingye Wu, Alejandro Sanchez, Michelle A Kendall, Evelyn Hogg, David Lagat, Umesh Lalloo, Valdilea Veloso, Diane V Havlir, Alan Landay
Background: The risk of short-term death for treatment naive patients dually infected with Mycobacterium tuberculosis and HIV may be reduced by early anti-retroviral therapy. Of those dying, mechanisms responsible for fatal outcomes are unclear. We hypothesized that greater malnutrition and/or inflammation when initiating treatment are associated with an increased risk for death. Methods: We utilized a retrospective case-cohort design among participants of the ACTG A5221 study who had baseline CD4 < 50 cells/mm3 ...
2018: Pathogens & Immunity
https://www.readbyqxmd.com/read/29762690/intestinal-integrity-biomarkers-in-early-antiretroviral-treated-perinatally-hiv-1-infected-infants
#5
Wei Li A Koay, Jane C Lindsey, Priyanka Uprety, Mutsa Bwakura-Dangarembizi, Adriana Weinberg, Myron J Levin, Deborah Persaud
Biomarkers of intestinal integrity (intestinal fatty acid binding protein (iFABP) and zonulin), were compared in early antiretroviral-treated, HIV-1-infected (HIV+; n=56) African infants and HIV-exposed but uninfected (HEU; n=53) controls. Despite heightened inflammation and immune activation in HIV+ infants, iFABP and zonulin levels at three months of age were not different from those in HEU infants, and largely not correlated with inflammatory and immune activation biomarkers. However, zonulin levels increased, and became significantly higher in HIV+ compared to HEU infants by five months of age despite ART-suppression...
May 12, 2018: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/29762170/a-compartmentalized-type-i-interferon-response-in-the-gut-during-chronic-hiv-1-infection-is-associated-with-immunopathogenesis
#6
Stephanie M Dillon, Kejun Guo, Gregory L Austin, Sara Gianella, Phillip A Engen, Ece A Mutlu, John Losurdo, Garth Swanson, Prachi Chakradeo, Ali Keshavarzian, Alan L Landay, Mario Santiago, Cara Wilson
OBJECTIVE(S): Type I IFN (IFN-I) responses confer both protective and pathogenic effects in persistent virus infections. IFN-I diversity, stage of infection and tissue compartment may account for this dichotomy. The gut is a major site of early HIV-1 replication and microbial translocation, but the nature of the IFN-I response in this compartment remains unclear. DESIGN: Samples were obtained from two IRB-approved cross-sectional studies. The first study included individuals with chronic, untreated HIV-1 infection (n = 24) and age/gender balanced uninfected controls (n = 14)...
May 11, 2018: AIDS
https://www.readbyqxmd.com/read/29762168/multimorbidity-age-related-comorbidities-and-mortality-association-of-activation-senescence-and-inflammation-markers-in-hiv-adults
#7
Pierre Duffau, Alexandra Ozanne, Fabrice Bonnet, Estibaliz Lazaro, Charles Cazanave, Patrick Blanco, Etienne Rivière, Arnaud Desclaux, Caroline Hyernard, Noemie Gensous, I Pellegrin, L Wittkop
BACKGROUND: The widespread introduction of combination antiretroviral therapy (cART) has increased survival of HIV+ patients. However, the prevalence of age-related comorbidities remains higher than that of the general population, suggesting that individuals with HIV suffer from accelerated aging. Immune activation, -senescence and inflammation could play an important role in this process. METHODS: The CIADIS (Chronic Immune Activation anD Senescence) sub-study analyzed biomarkers of activation, differentiation, and senescence of T-cells in a cellular-CIADIS weighted score, while biomarkers of inflammation were analyzed in a soluble-CIADIS weighted score using principal component analysis...
May 11, 2018: AIDS
https://www.readbyqxmd.com/read/29762043/the-effects-of-fish-oil-on-hiv-related-inflammation-and-markers-of-immunosenescence-a-randomized-clinical-trial
#8
Barbara Swanson, Joyce Keithley, Linda Baum, Sue Leurgans, Oluwatoyin Adeyemi, Lisa L Barnes, Mariana Mata, Anneliese Rosdil
OBJECTIVE: To explore the safety and efficacy of fish oil to modulate parameters of inflammation and immunosenescence in HIV-infected older adults. DESIGN: This study uses a randomized, controlled, double-blind clinical trial. SETTING: The study was conducted in an outpatient HIV/AIDS clinic in a large urban Midwestern city in the United States. SUBJECTS: A total of 37 clinically stable HIV-infected adults between the ages of 40 and 70 years of age participated...
May 15, 2018: Journal of Alternative and Complementary Medicine: Research on Paradigm, Practice, and Policy
https://www.readbyqxmd.com/read/29752681/critical-role-of-beclin1-in-hiv-tat-and-morphine-induced-inflammation-and-calcium-release-in-glial-cells-from-autophagy-deficient-mouse
#9
Jessica Lapierre, Myosotys Rodriguez, Chet Raj Ojha, Nazira El-Hage
We previously showed that autophagy is an important component in human immunodeficiency virus (HIV) replication and in the combined morphine-induced neuroinflammation in human astrocytes and microglia. Here we further studied the consequences of autophagy using glial cells of mice partially lacking the essential autophagy gene Atg6 (Beclin1) exposed to HIV Tat and morphine. Tat is known to cause an inflammatory response, increase calcium release, and possibly interact with autophagy pathway proteins. Following Tat exposure, autophagy-deficient (Becn1+/- ) glial cells had significantly and consistently reduced levels in the pro-inflammatory cytokine IL-6 and the chemokines RANTES and MCP-1 when compared to Tat-treated cells from control (C57BL/6J) mice, suggesting an association between the inflammatory effects of Tat and Beclin1...
May 11, 2018: Journal of Neuroimmune Pharmacology: the Official Journal of the Society on NeuroImmune Pharmacology
https://www.readbyqxmd.com/read/29750855/pharmacological-and-nutritional-effects-of-natural-coumarins-and-their-structure-activity-relationships
#10
REVIEW
Jing-Jing Zhu, Jian-Guo Jiang
Coumarins are fused benzene and pyrone ring systems with a wide spectrum of bioactivities including anti-tumor, anti-inflammation, antiviral and antibacterial effects. In this paper, the current development of coumarins-based drugs is introduced, and their structure-activity relationship is discussed by reviewing the relevant literatures published in the past twenty years. Coumarin molecules can be customized by the target site to prevent systemic side effects by virtue of structural modification. The ortho-phenolic hydroxyl on the benzene ring had remarkable antioxidant and anti-tumor activities...
May 11, 2018: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/29746617/a-wake-up-call-for-human-immunodeficiency-virus-hiv-providers-obstructive-sleep-apnea-in-people-living-with-hiv
#11
Robert L Owens, Charles B Hicks
Obstructive sleep apnea (OSA) is defined by repetitive collapse of the upper airway during sleep leading to transient hypoxemia and arousals from sleep. Surges in sympathetic activity, repeated oxygen desaturation, and sleep fragmentation can lead to cardiovascular (eg, myocardial infarction) and neurocognitive (eg, excessive daytime sleepiness) consequences. Emerging data suggest that OSA is common in people living with human immunodeficiency virus (PLWH) and that traditional risk factors for OSA, such as obesity, are not highly predictive of OSA in PLWH...
May 9, 2018: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/29737455/current-and-future-use-of-chloroquine-and-hydroxychloroquine-in-infectious-immune-neoplastic-and-neurological-diseases-a-mini-review
#12
REVIEW
Domenico Plantone, Tatiana Koudriavtseva
The process of finding new therapeutic indications for currently used drugs, defined as 'repurposing', is receiving growing attention. Chloroquine and hydroxychloroquine, with an original indication to prevent or cure malaria, have been successfully used to treat several infectious (HIV, Q fever, Whipple's disease, fungal infections), rheumatological (systemic lupus erythematosus, antiphospholipid antibody syndrome, rheumatoid arthritis, Sjögren's syndrome), and other immunological diseases. Indeed, they have anti-inflammatory, immunomodulating, anti-infective, antithrombotic, and metabolic effects...
May 8, 2018: Clinical Drug Investigation
https://www.readbyqxmd.com/read/29734217/dysregulation-of-apoptosis-and-autophagy-gene-expression-in-pbmcs-of-efficiently-treated-hiv-infected-patients
#13
Amandine Serrano, Saïd El Haddad, Frédéric Moal, Thierry Prazuck, Eric Legac, Chloé Robin, Fabienne Brule, Stéphane Charpentier, Thierry Normand, Alain Legrand, Laurent Hocqueloux, Lucile Mollet
OBJECTIVE: We measure the transcript levels of the pro-apoptotic GALIG, anti-apoptotic MCL1 genes and those of the autophagy genes BECN1, MAP1LC3B, ATG9a, P62/SQSTM1, GABARAP, GABARAPL1 and GABARAPL2 to define if mRNA alteration can characterize HIV infected patients effectively treated with combined antiretroviral therapy (cART). DESIGN: Monocentric pilot study conducted on PBMC of 40 uninfected donors and 27 HIV positive patients effectively treated by cART for at least 8...
May 3, 2018: AIDS
https://www.readbyqxmd.com/read/29732382/common-variation-in-nlrp3-is-associated-with-early-death-and-elevated-inflammasome-biomarkers-among-advanced-hiv-tb-co-infected-patients-in-botswana
#14
Shruthi Ravimohan, Kebatshabile Nfanyana, Neo Tamuhla, Caroline T Tiemessen, Drew Weissman, Gregory P Bisson
Background: Elevated inflammation is associated with early mortality among HIV/tuberculosis (TB) patients starting antiretroviral therapy (ART); however, the sources of immune activation are unclear. We hypothesized that common variation in innate immune genes contributes to excessive inflammation linked to death. As single nucleotide polymorphisms (SNPs) in inflammasome pathway genes can increase risk for inflammatory diseases, we investigated their association with early mortality among a previously described cohort of HIV/TB patients initiating ART in Botswana...
May 2018: Open Forum Infectious Diseases
https://www.readbyqxmd.com/read/29731256/antiretroviral-therapy-potentiates-high-fat-diet-induced-obesity-and-glucose-intolerance
#15
Mark E Pepin, Lindsey E Padgett, Ruth E McDowell, Ashley R Burg, Manoja K Brahma, Cassie Holleman, Teayoun Kim, David Crossman, Olaf Kutsch, Hubert M Tse, Adam R Wende, Kirk M Habegger
OBJECTIVE: Breakthroughs in HIV treatment, especially combination antiretroviral therapy (ART), have massively reduced AIDS-associated mortality. However, ART administration amplifies the risk of non-AIDS defining illnesses including obesity, diabetes, and cardiovascular disease, collectively known as metabolic syndrome. Initial reports suggest that ART-associated risk of metabolic syndrome correlates with socioeconomic status, a multifaceted finding that encompasses income, race, education, and diet...
April 20, 2018: Molecular Metabolism
https://www.readbyqxmd.com/read/29727294/croi-2018-complications-of-hiv-infection-and-antiretroviral-therapy
#16
Judith S Currier, Diane V Havlir
This year marked the 25th Conference on Retroviruses and Opportunistic Infections (CROI), and although there is much progress to celebrate in terms of treatment of HIV infection and expanding ART globally, many challenges remain. Tuberculosis is still the leading cause of death among people with HIV infection globally. This year, the results of investments in research to improve the prevention and treatment of tuberculosis were a highlight of the meeting. Noninfectious causes remain an important source of morbidity...
May 2018: Topics in Antiviral Medicine
https://www.readbyqxmd.com/read/29725327/lymph-node-cellular-and-viral-dynamics-in-natural-hosts-and-impact-for-hiv-cure-strategies
#17
REVIEW
Nicolas Huot, Steven E Bosinger, Mirko Paiardini, R Keith Reeves, Michaela Müller-Trutwin
Combined antiretroviral therapies (cARTs) efficiently control HIV replication leading to undetectable viremia and drastic increases in lifespan of people living with HIV. However, cART does not cure HIV infection as virus persists in cellular and anatomical reservoirs, from which the virus generally rebounds soon after cART cessation. One major anatomical reservoir are lymph node (LN) follicles, where HIV persists through replication in follicular helper T cells and is also trapped by follicular dendritic cells...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29719831/a-30-year-old-man-with-hiv-fever-and-a-rash
#18
Radhika Shah, Saami Khalifian, Lyn Duncan, Daniela Kroshinsky, Bonnie Mackool
Patients who present with papular rashes have a wide differential diagnosis particularly in the setting of immune compromise. A 30-year-old male diagnosed with HIV since 2009, never on antiretroviral therapy, with a nadir CD4 count of 333 cells/mm3 and a current viral load of 44,300 copies/mL, presented with a diffuse monomorphic papular eruption that began on his trunk and extremities and subsequently spread to the penis and scrotum, sparing the distal acral sites. A thorough infectious workup revealed a positive rapid plasma reagin (RPR) and varicella IgM and IgG antibodies...
January 2018: Dermatopathology (Basel, Switzerland)
https://www.readbyqxmd.com/read/29718342/increased-systemic-inflammation-and-gut-permeability-among-women-with-treated-hiv-infection-in-rural-uganda
#19
Mark J Siedner, Markella Zanni, Russell P Tracy, Douglas S Kwon, Alexander C Tsai, Bernard Kakuhire, Peter W Hunt, Samson Okello
In a cohort of HIV-infected individuals and age and sex-matched HIV-uninfected comparators, we assessed soluble (s)CD14, sCD163, interleukin (IL)-6, intestinal fatty acid binding protein (IFAPB) and high-sensitivity C-reactive protein (hs-CRP). The median age was 51 years; and among HIV+, median ART duration was 7 years, median CD4 T-cell count was 433, and 86% had an undetectable viral load. Although HIV+ had higher sCD14, IFABP and hs-CRP, we found evidence of interaction by sex, such that HIV+ women had greater differences versus HIV- compared to men...
April 28, 2018: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/29712976/impact-of-hiv-and-type-2-diabetes-on-gut-microbiota-diversity-tryptophan-catabolism-and-endothelial-dysfunction
#20
Hedda Hoel, Malene Hove-Skovsgaard, Johannes R Hov, Julie Christine Gaardbo, Kristian Holm, Martin Kummen, Knut Rudi, Felix Nwosu, Jørgen Valeur, Marco Gelpi, Ingebjørg Seljeflot, Per Magne Ueland, Jan Gerstoft, Henrik Ullum, Pål Aukrust, Susanne Dam Nielsen, Marius Trøseid
HIV infection and type 2 diabetes are associated with altered gut microbiota, chronic inflammation, and increased cardiovascular risk. We aimed to investigate the combined effect of these diseases on gut microbiota composition and related metabolites, and a potential relation to endothelial dysfunction in individuals with HIV-infection only (n = 23), diabetes only (n = 16) or both conditions (n = 21), as well as controls (n = 24). Fecal microbiota was analyzed by Illumina sequencing of the 16 S rRNA gene...
April 30, 2018: Scientific Reports
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