Search results for "Antiretroviral Therapy"

showing 10 items of 79 documents

Human Leukocyte Antigens Class II Alleles Affecting the Response to 5–7 Year Antiretroviral Therapy in A Latvian Cohort

2019

Abstract Antiretroviral therapy (ART) aims at suppressing viral replication and strengthening immune system in patients with HIV-1. Human Leukocyte Antigens (HLA) are among factors responsible for effectiveness of ART. The aim of this study was to determine the effect of HLA Class II alleles on the response to long-time ART, assessed by a change in CD4+ T-cell count in relation to viral load. The sample included 69 patients (17 females and 52 males) aged 20 to 50 with HIV-1 infection, who were undergoing ART in the Latvian Centre of Infectious Diseases. The median period of observation was 5.7 years. CD4+ T-cell count and viral load were analysed at the baseline and end of the period of obs…

0301 basic medicineClass (computer programming)MultidisciplinaryGeneral interestScienceQLatvianhiv-1Human leukocyte antigenhla class iiAntiretroviral therapylanguage.human_language03 medical and health sciences030104 developmental biology0302 clinical medicineImmunologyCohortlanguageAllelecd4+ t cells030217 neurology & neurosurgeryartProceedings of the Latvian Academy of Sciences. Section B, Natural Sciences
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Gut Bacteria Metabolism Impacts Immune Recovery in HIV-infected Individuals.

2016

While changes in gut microbial populations have been described in human immuno-deficiency virus (HIV)-infected patients undergoing antiretroviral therapy (ART), the mechanisms underlying the contributions of gut bacteria and their molecular agents (metabolites and proteins) to immune recovery remain unexplored. To study this, we examined the active fraction of the gut microbiome, through examining protein synthesis and accumulation of metabolites inside gut bacteria and in the bloodstream, in 8 healthy controls and 29 HIV-infected individuals (6 being longitudinally studied). We found that HIV infection is associated to dramatic changes in the active set of gut bacteria simultaneously alter…

0301 basic medicineMale030106 microbiologylcsh:MedicineInflammationHIV InfectionsGut microbiotaGut floraGeneral Biochemistry Genetics and Molecular BiologyVirusMicrobiology03 medical and health sciencesMedicine General & InternalImmunityAntiretroviral Therapy Highly ActivemedicineMetabolomeHumansMetabolomicsImmune recoveryBiologyMetaproteomelcsh:R5-920biologyBacteriaGastrointestinal Microbiomelcsh:RImmunityHIVGeneral MedicineViral Loadbiology.organism_classificationCD4 Lymphocyte CountGastrointestinal MicrobiomeAntiretroviral therapy030104 developmental biologyCase-Control StudiesImmunologyHIV-1MetabolomeFemalemedicine.symptomlcsh:Medicine (General)Viral loadBacteriaBiomarkersResearch PaperEBioMedicine
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Efficacy and tolerability of switching to a dual therapy with darunavir/ritonavir plus raltegravir in HIV-infected patients with HIV-1 RNA ≤50 cp/…

2017

Background: Nucleos(t)ide reverse transcriptase inhibitors (NRTI) toxicity may represent a threat for long-term success of combined antiretroviral therapy. Some studies have suggested a possible improvement of NRTI-related toxicity after switching to NRTI-sparing regimens. Objectives: We aimed to explore the efficacy and tolerability of switching to darunavir/ritonavir (DRV/r) plus raltegravir (RAL) while having a viral load (VL) ≤50 copies/mL in the clinical setting. Study design: Treatment-experienced HIV 1-infected patients enrolled in the ICONA Foundation Study cohort were included if they switched their current regimen to DRV/r + RAL with a HIV-RNA ≤50 copies/mL. Different defin…

0301 basic medicineMaleHIV InfectionsAntiretroviral therapy; Darunavir/ritonavir; Efficacy; NRTI-sparing regimen; Raltegravir; Tolerability; Microbiology (medical); Infectious DiseasesAntiretroviral therapy; Darunavir/ritonavir; Efficacy; NRTI-sparing regimen; Raltegravir; Tolerability; Adult; Anti-HIV Agents; Cohort Studies; Darunavir; Drug Therapy Combination; Female; HIV Infections; HIV-1; Humans; Italy; Male; Middle Aged; RNA Viral; Raltegravir Potassium; Ritonavir; Viral LoadGastroenterologyCohort StudiesAntiretroviral therapy; Darunavir/ritonavir; Efficacy; NRTI-sparing regimen; Raltegravir; Tolerability0302 clinical medicineMedicineNRTI-sparing regimen030212 general & internal medicineViralDarunavireducation.field_of_studyLamivudineGeneral MedicineMiddle AgedViral LoadTolerabilityAntiretroviral therapyInfectious DiseasesTolerabilityItalyCombinationRNA ViralDrug Therapy CombinationFemaleViral loadmedicine.drugAdultMicrobiology (medical)medicine.medical_specialtyEfficacyAnti-HIV Agents030106 microbiologyPopulationDarunavir/ritonavir; Raltegravir; Efficacy; Tolerability; Antiretroviral therapy; NRTI-sparing regimenSettore MED/17 - MALATTIE INFETTIVELower riskNO03 medical and health sciencesDrug TherapyInternal medicineRaltegravir PotassiumHumanseducationDarunavirRitonavirbusiness.industryDarunavir/ritonavirRaltegravirRaltegravirHIV-1RNARitonavirbusinessAntiretroviral therapy; Darunavir/ritonavir; Efficacy; NRTI-sparing regimen; Raltegravir; Tolerability;
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Evolution of transmitted HIV-1 drug resistance and viral subtypes circulation in Italy from 2006 to 2016

2018

Objectives: The aim was to evaluate the evolution of transmitted HIV-1 drug resistance (TDR) prevalence in antiretroviral therapy (ART)-naïve patients from 2006 to 2016. Methods: HIV-1 sequences were retrieved from the Antiviral Response Cohort Analysis (ARCA) database and TDR was defined as detection of at least one mutation from the World Health Organization (WHO) surveillance list. Results: We included protease/reverse transcriptase sequences from 3573 patients; 455 had also integrase sequences. Overall, 68.1% of the patients were Italian, the median CD4 count was 348 cells/μL [interquartile range (IQR) 169–521 cells/μL], and the median viral load was 4.7 log 10 HIV-1 RNA copies/mL (IQR …

0301 basic medicineMaleantiretroviral therapy; HIV; recent HIV infection; resistance epidemiology; transmitted HIV drug resistance; Adult; Anti-HIV Agents; CD4 Lymphocyte Count; Female; HIV Infections; HIV-1; Humans; Italy; Male; Middle Aged; Mutation; Odds Ratio; Prevalence; Viral Proteins; Drug Resistance Viralantiretroviral therapy; HIV; recent HIV infection; resistance epidemiology; transmitted HIV drug resistance; Health Policy; Infectious Diseases; Pharmacology (medical)Drug ResistanceHIV InfectionsDrug resistanceGastroenterologyInterquartile rangeOdds RatioPrevalenceHIV InfectionPharmacology (medical)ViralbiologyHealth PolicyMiddle AgedIntegraseInfectious DiseasesItalyFemaleViral loadHumanresistance epidemiologyAdultmedicine.medical_specialtytransmitted HIV drug resistanceAnti-HIV AgentsHIV; antiretroviral therapy; recent HIV infection; resistance epidemiology; transmitted HIV drug resistance030106 microbiologyantiretroviral therapySettore MED/17 - MALATTIE INFETTIVEVirus03 medical and health sciencesrecent HIV infectionViral ProteinsInternal medicineDrug Resistance ViralmedicineViral ProteinHumansbusiness.industryAnti-HIV AgentHIVOdds ratioReverse transcriptaseConfidence intervalCD4 Lymphocyte CountMutationbiology.proteinHIV-1business
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The purine analogues abacavir and didanosine increase acetaminophen-induced hepatotoxicity by enhancing mitochondrial dysfunction

2016

Background NRTIs are essential components of HIV therapy with well-documented, long-term mitochondrial toxicity in hepatic cells, but whose acute effects on mitochondria are unclear. As acetaminophen-induced hepatotoxicity also involves mitochondrial interference, we hypothesized that it would be exacerbated in the context of ART. Methods We evaluated the acute effects of clinically relevant concentrations of the most widely used NRTIs, alone or combined with acetaminophen, on mitochondrial function and cellular viability. Results The purine analogues abacavir and didanosine produced an immediate and concentration-dependent inhibition of oxygen consumption and complex I and III activity. Th…

0301 basic medicineMicrobiology (medical)Mitochondrial DiseasesstavudineAnti-HIV Agentsantiretroviral therapyPurine analogueContext (language use)Mitochondria LiverMitochondrionPharmacologymedicine.disease_causeacute liver-failureCell Line03 medical and health sciencesOxygen ConsumptionmedicineHumansPharmacology (medical)Reverse-transcriptase inhibitorsAcetaminophenPharmacologychemistry.chemical_classificationmechanismsReactive oxygen speciesbusiness.industryassociationtoxicityAnalgesics Non-Narcoticmedicine.diseaseGlutathioneReactive Nitrogen SpeciesDideoxynucleosideshep3b cellsAcetaminophenMitochondrial toxicityDidanosine030104 developmental biologyInfectious DiseaseschemistryElectron Transport Chain Complex ProteinsToxicityhypersensitivityChemical and Drug Induced Liver Injurybusinesshepatic cellsOxidative stressmedicine.drug
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Pre-ART HIV-1 DNA in CD4+ T cells correlates with baseline viro-immunological status and outcome in patients under first-line ART

2018

Objectives We evaluated the association between pre-ART HIV DNA and HIV-infected participant characteristics at baseline as well as with their response to first-line ART. Methods Four hundred and thirty-three patients from the ICONA cohort, starting first-line ART after the year 2000, were analysed. Pre-ART HIV DNA was quantified with the modified COBAS TaqMan HIV-1 Test and normalized by CD4+ T cells. Linear correlation between pre-ART HIV DNA and other continuous markers (HIV RNA, CD4 count, markers of inflammation and coagulation) at baseline was evaluated by means of Pearson correlation coefficient and a linear regression model. Survival analyses and Cox regression models were used to s…

0301 basic medicineOncologyCD4-Positive T-LymphocytesMaleHIV InfectionsSettore MED/07chemistry.chemical_compoundHIV InfectionPharmacology (medical)ViralProspective StudiesProspective cohort studyAntiinfective agentAdult; Anti-Retroviral Agents; CD4-Positive T-Lymphocytes; DNA Viral; Female; HIV Infections; HIV-1; Humans; Male; Middle Aged; Prospective Studies; Survival Analysis; Treatment Outcome; Viral LoadMiddle AgedViral LoadvirologyHIV CD4Stavudinemedicine.anatomical_structureInfectious DiseasesTreatment Outcomehiv-1 t-lymphocytes virology blood hiv rna hiv dnaAnti-Retroviral AgentsCD4-Positive T-Lymphocyteblood hiv rnaCohorthiv dnaFemaleSurvival AnalysiViral loadARTHumanMicrobiology (medical)Adultmedicine.medical_specialtyAntiretroviral Therapy CD4 Lymphocyte Count StavudineT cellAntiretroviral TherapySettore MED/17 - MALATTIE INFETTIVENO03 medical and health sciencesInternal medicinemedicineHumanst-lymphocytesSurvival analysisPharmacologybusiness.industryProportional hazards modelHIVDNASurvival AnalysisCD4 Lymphocyte CountProspective Studie030104 developmental biologychemistryDNA ViralHIV-1Anti-Retroviral AgentbusinessDNA
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Apoptosis of Hepatocytes: Relevance for HIV-Infected Patients under Treatment.

2021

Due to medical advances over the past few decades, human immunodeficiency virus (HIV) infection, once a devastatingly mortal pandemic, has become a manageable chronic condition. However, available antiretroviral treatments (cART) cannot fully restore immune health and, consequently, a number of inflammation-associated and/or immunodeficiency complications have manifested themselves in treated HIV-infected patients. Among these chronic, non-AIDS (acquired immune deficiency syndrome)-related conditions, liver disease is one of the deadliest, proving to be fatal for 15–17% of these individuals. Aside from the presence of liver-related comorbidities, including metabolic disturbances and co-infe…

0301 basic medicineProgrammed cell deathChronic conditionantiretroviral drugs; apoptosis; hepatic cell death; HIV; liver; toxicityInflammationApoptosisHIV InfectionsReviewliverModels Biological03 medical and health sciencesLiver disease0302 clinical medicineImmune systemAntiretroviral Therapy Highly ActivemedicineHumans030212 general & internal medicinelcsh:QH301-705.5antiretroviral drugsImmunodeficiencybusiness.industryapoptosisHIVtoxicityGeneral Medicinemedicine.diseasehepatic cell death030104 developmental biologylcsh:Biology (General)LiverApoptosisImmunologyUnfolded protein responseHepatocytesmedicine.symptombusinessCells
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Oral manifestations, salivary flow rates and Candida species in Thai HIV-infected patients

2019

Background Effects of various Highly Active Antiretroviral Therapy (HAART) regimens on oral heath are unclear. Objectives: We aimed to evaluate effects of HAART on oral manifestations, salivary flow rates (SFR) and Candida species in HIV-infected patients who took mostly non-protease inhibitor-based HAART regimens. Material and methods A cross-sectional study was performed on HIV-infected patients taking and never taken HAART who attended Thai Red Cross AIDS Research Centre (n = 48). Non-HIV subjects were recruited as control (n = 20). Oral conditions and salivary flow rates were evaluated using oral examination and measurement of unstimulated and stimulated saliva. In addition, Candida col…

0301 basic medicineSalivamedicine.medical_specialty030106 microbiology03 medical and health sciences0302 clinical medicineAcquired immunodeficiency syndrome (AIDS)immune system diseasesInternal medicineHiv infected patientsMedicine030212 general & internal medicineGeneral DentistryColony-forming unitOral Medicine and Pathologybusiness.industryResearchvirus diseases:CIENCIAS MÉDICAS [UNESCO]medicine.diseaseAntiretroviral therapyHyperpigmentationCorpus albicansSensitivity testUNESCO::CIENCIAS MÉDICASmedicine.symptombusiness
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p53 and p53-related mediators PAI-1 and IGFBP-3 are downregulated in peripheral blood mononuclear cells of HIV-patients exposed to non-nucleoside rev…

2019

The improved effectiveness and safety of the combined antiretroviral therapy (cART) has largely diminished mortality and AIDS-defining morbidity of HIV-patients. Nevertheless, chronic age-related diseases in these individuals are more common and their underlying pathogenic mechanisms of these actions seem to involve accelerated aging and enhanced inflammation. The present study explores markers of these processes in a heterogenous Spanish HIV cohort using peripheral blood samples of HIV-patients and matched uninfected controls. We isolated periheral blood mononuclear cells (PBMCs) and i) compared the expression of a panel of 14 genes related to inflammation and senescence in PBMCs of HIV-pa…

0301 basic medicineSenescenceAdultMaleAnti-HIV Agents030106 microbiologyDown-RegulationInflammationHIV InfectionsCCL2Peripheral blood mononuclear cell03 medical and health sciencesVirologyAntiretroviral Therapy Highly ActivePlasminogen Activator Inhibitor 1medicineCXCL10HumansCellular SenescencePharmacologyInflammationbusiness.industryInterleukin-6Interleukin-18virus diseasesMiddle AgedCCL20Chemokine CXCL10030104 developmental biologyInsulin-Like Growth Factor Binding Protein 3ImmunologyLeukocytes MononuclearReverse Transcriptase InhibitorsInterleukin 18Tumor necrosis factor alphaFemalemedicine.symptomTumor Suppressor Protein p53businessAntiviral research
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Virological response and retention in care according to time of starting ART in Italy: data from the Icona Foundation Study cohort

2020

Abstract Objectives To describe: (i) factors associated with rapid and delayed ART initiation; (ii) rates of 12 week virological response; and (iii) virologically controlled retention in care by 1 year from ART initiation according to timing of start in a real-life setting. Methods All individuals in the Icona cohort diagnosed with HIV in 2016–17 who initiated ART were grouped according to the time between HIV diagnosis and ART initiation: Group 1, ≤7 days; Group 2, 8–14 days; Group 3, 15–30 days; Group 4, 31–120 days; and Group 5, >120 days. Multivariable logistic regression models were used to identify factors associated with: (i) the probability of rapid (Group 1) and very delayed…

0301 basic medicinediagnosishivcommunicable diseasesHIV InfectionsLogistic regressionVirological responseCohort Studies0302 clinical medicineRetention in CareMedicinePharmacology (medical)HIV Infection030212 general & internal medicineProspective cohort studycd4 count determination proceduredrugsuppressionViral LoadCD4 Lymphocyte Count; Cohort Studies; Humans; Italy; Viral Load; Anti-HIV Agents; HIV Infections; Retention in CarevirologyInfectious DiseasesItalyblood hiv rnaCohorthiv cd4 count determination procedure communicable diseases incomeitaly diagnosis virology blood hiv rna retention in careincomeitalyViral loadHIV ARTCohort studyHumanMicrobiology (medical)medicine.medical_specialtyAnti-HIV Agentsantiretroviral therapySettore MED/17 - MALATTIE INFETTIVENO03 medical and health sciencesHIV viral loadInternal medicineHumansHIV CD4 ARTPharmacologybusiness.industrydouble blindAnti-HIV AgentHIV viral load antiretroviral therapy double blind initiation suppression infectionRetention in care030112 virologyinfectioninitiationCD4 Lymphocyte CountObservational studyCohort Studiebusiness
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