Search results for "human immunodeficiency viru"

showing 10 items of 175 documents

Trimeric HIV Env provides epitope occlusion mediated by hypervariable loops

2014

AbstractHypervariable loops of HIV-1 Env protein gp120 are speculated to play roles in the conformational transition of Env to the receptor binding-induced metastable state. Structural analysis of full-length Env-based immunogens, containing the entire V2 loop, displayed tighter association between gp120 subunits, resulting in a smaller trimeric diameter than constructs lacking V2. A prominent basal quaternary location of V2 and V3′ that challenges previous reports would facilitate gp41-independent gp120-gp120 interactions and suggests a quaternary mechanism of epitope occlusion facilitated by hypervariable loops. Deletion of V2 resulted in dramatic exposure of basal, membrane-proximal gp41…

Models MolecularProtein ConformationvirusesHuman immunodeficiency virus (HIV)[CHIM.THER]Chemical Sciences/Medicinal ChemistryPlasma protein bindingHIV Envelope Protein gp120medicine.disease_causeEnv ProteinEpitopeenv Gene ProductsEpitopesProtein structureModelsComputingMilieux_MISCELLANEOUSSequence DeletionGeneticsMultidisciplinary[SDV.BBM.BS]Life Sciences [q-bio]/Biochemistry Molecular Biology/Structural Biology [q-bio.BM]Transition (genetics)biologyenv Gene Products Human Immunodeficiency Virusvirus diseaseshypervariable loopsHIV Envelope Protein gp41[SDV.BBM.BC]Life Sciences [q-bio]/Biochemistry Molecular Biology/Biomolecules [q-bio.BM]3. Good health[SDV.BBM.BS]Life Sciences [q-bio]/Biochemistry Molecular Biology/Biomolecules [q-bio.BM]CD4 AntigensHIV/AIDSAntibodyHuman Immunodeficiency VirusProtein BindingEnvGp41ArticleVaccine RelatedGenetics[CHIM.CRIS]Chemical Sciences/CristallographymedicineHumansProtein Interaction Domains and Motifs[SDV.BBM.BC]Life Sciences [q-bio]/Biochemistry Molecular Biology/Biochemistry [q-bio.BM]AntigensVaccine Related (AIDS)Preventionta1182Molecular[SDV.IMM.IMM]Life Sciences [q-bio]/Immunology/ImmunotherapyCD4Peptide Fragmentsgp120Good Health and Well BeingHIV-1biology.proteinImmunizationProtein MultimerizationproteinScientific Reports
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 Consistency and Proportionality in Policy Decision-Making in Blood Safety: the Case for an All-Apheresis Platelet Supply in Germany

2013

SUMMARY Recently, German investigators presented the first mathematical model finding a significant increase in the risk of HIV, HCV, and HBV transmission when pools of 4 whole-blood-derived buffy-coat platelets, rather than 1 singledonor (apheresis) component, are used to provide one platelet dose. Based, in both cases, on mathematical models employing the incidence/window-period method, the relative risk of transmission from pooled versus apheresis platelets (2.2 or 2.75 for HIV, 2.7 or 3.375 for HCV, and 3.2 or 4.0 for HBV, with pools of 4 or 5 concentrates, respectively) is similar to the difference in risk before (versus after) introduction of HIV-1 and HCV RNA screening. The absolute …

Oncologymedicine.medical_specialtybusiness.industryHuman immunodeficiency virus (HIV)Viral transmissionvirus diseasesPathogen reductionmedicine.disease_causeGeneral Biochemistry Genetics and Molecular BiologyPolicy decisionInternal medicineRelative riskImmunologymedicineBlood safetyPlateletbusinessModel findingClinical Laboratory
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Long Term Results of Stanford V Regimen and Highly Active Antiretroviral Therapy (HAART) In 59 Patients (pts) with HD and HIV Infection (HD-HIV)

2010

Abstract Abstract 4827 Background: The introduction of HAART has significantly improved the outcome of pts with HD-HIV. However there are no data on the long term follow-up of HD-HIV pts treated with conventional chemotherapy (CT) regimens. In 2002, we reported the results of a prospective phase II study with the intensive 12-week CT with adjuvant radiotherapy (Stanford V) and concomitant HAART in 59 pts (Spina et al. Blood 2002;100:1984-1988). Methods: To analyze the long term outcome of patients included in the Stanford V and HAART protocol. Results: The median follow-up is 67months (range 3–156 months The 5-yr overall survival (OS), freedom from progression (FFP), disease free survival a…

Oncologymedicine.medical_specialtybusiness.industrymedicine.medical_treatmentImmunologyHuman immunodeficiency virus (HIV)Phases of clinical researchCell BiologyHematologyStanford V regimenLong term resultschemotherapymedicine.disease_causemedicine.diseaseBiochemistrySettore MED/15 - Malattie Del SangueSurgeryStanford VIdiopathic pneumonia syndromeInternal medicineConcomitantmedicineHodgkin's diseaseFresh frozen plasmabusinessBlood
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Presence of human papillomavirus and Epstein-Barr virus in the cervix of women infected with the human immunodeficiency virus

2001

The presence of human papillomavirus (HPV) and Epstein-Barr virus (EBV) was sought in cervical scrapings from 110 human immunodeficiency virus (HIV)-infected women to evaluate the role of these viruses as risk factors for squamous intraepithelial lesions of the cervix. By using PCR, presence of HPV-DNA and EBV-DNA was found in 60.9% (67/110) and in 10% (11/110) of clinical samples, respectively. Identification of oncogenic group of HPV by hybrid capture (HC II, Murex-Digene) indicated the presence of low-risk HPV in 13 (19.4%) patients, high-risk HPV in 28 (41.8%), and both types of HPV in 26 (38.8%) patients. Squamous intraepithelial lesions were present in 59 cases, being low-grade (n = 5…

Opportunistic infectionHuman immunodeficiency virus (HIV)medicine.disease_causeVirusHerpesviridaelaw.inventionlawVirologymedicineGammaherpesvirinaeHuman papillomavirusRisk factorSidaCervixPolymerase chain reactionbiologybusiness.industryObstetrics and GynecologyGeneral Medicinebiology.organism_classificationmedicine.diseaseEpstein–Barr virusVirologyKoilocyteInfectious Diseasesmedicine.anatomical_structureViral diseasebusinessJournal of Medical Virology
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An international perspective on hospitalized patients with viral community-acquired pneumonia

2019

Background Who should be tested for viruses in patients with community acquired pneumonia (CAP), prevalence and risk factors for viral CAP are still debated. We evaluated the frequency of viral testing, virus prevalence, risk factors and treatment coverage with oseltamivir in patients admitted for CAP. Methods Secondary analysis of GLIMP, an international, multicenter, point-prevalence study of hospitalized adults with CAP. Testing frequency, prevalence of viral CAP and treatment with oseltamivir were assessed among patients who underwent a viral swab. Univariate and multivariate analysis was used to evaluate risk factors. Results 553 (14.9%) patients with CAP underwent nasal swab. Viral CA…

PNEUMONIAMaleMultivariate analysisInternationalityPCV13 pneumococcal conjugate vaccineDatabases FactualHospitalized patientsmedicine.medical_treatmentvirusesCAD coronary artery diseaseTesting030204 cardiovascular system & hematologyMRSA methicillin resistant Staphylococcus aureusPneumònia adquirida a la comunitatRT-PCR reverse transcriptase polymerase chain reactionchemistry.chemical_compound0302 clinical medicineCommunity-acquired pneumoniaTaverne80 and overCommunity-Acquired InfectionViral030212 general & internal medicineProspective StudiesAged 80 and overRIDT rapid influenza diagnostic testCAP community-acquired pneumoniaRSV Respiratory Syncytial virusMiddle AgedICU intensive care unitCommunity-Acquired InfectionsHospitalizationNasal SwabInfectious diseasesFemaleViral swabHumanOseltamivirmedicine.medical_specialtyLogistic ModelCommunity-acquired pneumoniaViral pneumoniaCommunity acquired pneumonia; Influenza; Oseltamivir; Testing; Viral pneumonia; Viral swab; Aged; Aged 80 and over; Antiviral Agents; Community-Acquired Infections; Cross-Sectional Studies; Databases Factual; Female; Hospitalization; Humans; Influenza Human; Internationality; Logistic Models; Male; Medication Adherence; Middle Aged; Oseltamivir; Pneumonia Viral; Prospective StudiesPneumonia ViralAdmissionSettore MED/10 - Malattie Dell'Apparato RespiratorioInfluenzavirusAntiviral AgentsVirusArticleMedication AdherenceHMPV human MetapneumovirusDatabases03 medical and health sciencesLRTI lower respiratory tract infectionOseltamivirInternal medicineInfluenza HumanInternal MedicinemedicineInfluenza virusesHumansHIV Human Immunodeficiency virusPPSV23 pneumococcal polysaccharide vaccineIn patientFactualAgedMechanical ventilationAntiviral AgentCross-Sectional Studiebusiness.industryFEV1 forced expiratory volume in one secondGLIMP global initiative for methicillin-resistant Staphylococcus aureus pneumoniaESBL extended-spectrum beta-lactamasesPneumoniamedicine.diseaseInfluenzaCommunity acquired pneumoniaCI confidence intervalOR odds ratioCross-Sectional StudiesLogistic ModelschemistryCOPD chronic obstructive pulmonary diseasebusinessCommunity acquired pneumonia ; Influenza ; Oseltamivir ; Testing ; Viral pneumonia ; Viral swab
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Traditional Chinese herbal medicine at the forefront battle against COVID-19: Clinical experience and scientific basis.

2020

Abstract Background Throughout the 5000-year history of China, more than 300 epidemics were recorded. Traditional Chinese herbal medicine (TCM) has been used effectively to combat each of these epidemics’ infections, and saved many lives. To date, there are hundreds of herbal TCM formulae developed for the purpose of prevention and treatment during epidemic infections. When COVID-19 ravaged the Wuhan district in China in early January 2020, without a deep understanding about the nature of COVID-19, patients admitted to the TCM Hospital in Wuhan were immediately treated with TCM and reported later with >90% efficacy. Approach We conducted conduct a systematic survey of various TCM herbal pre…

PTGS2 Prostaglandin-endoperoxide synthase 2BattleAIV avian influenza virusCoV coronavirusPharmaceutical ScienceiNOS nitric oxide synthaseViral infection0302 clinical medicinePA patchouli alcoholSARS Severe Acute Respiratory SyndromeSMD Sheganmahuang decoctionDrug DiscoveryPandemicIL InterleukinMedicine Chinese TraditionalALI acute lung injuriesmedia_commonCOVID-19 coronavirus disease 2019MXSG Ma xing shi gan decoction0303 health sciencesTNF tumor necrosis factorClinical Trials as TopicCCL2 CC chemokine ligand 2FM1 FM1 coronavirusICU intensive care unitc-AMP cyclic adenosine phosphateHIV human immunodeficiency virus030220 oncology & carcinogenesisCOX-2 cyclooxygenase-2Molecular MedicineHerbal preparationsMedicinal herbsAbbreviations: ACE2 angiotensin-converting enzyme IITCM traditional Chinese medicineHSV-1 herpes simplex virus 1CASP3 caspase 3medicine.medical_specialtyChinaCoronavirus disease 2019 (COVID-19)Systematic surveymedia_common.quotation_subjectJEV Japanese encephalitis virusNF-κB nuclear factor kappa B cellsAntiviral AgentsArticleWHO World Health Organization03 medical and health sciencesIEC-6 rat intestinal epithelial cell line 6SOD superoxide dismutaseCDC Center for Disease Control and PreventionmedicineAVP arginine vasopressinPGE2 prostaglandin E2HumansIntensive care medicineLH Lianhuaqingwen capsule030304 developmental biologyPharmacologyMedicinal herbMDA malondialdehydeGCGJ Gancao ganjiang decoctionNO nitric oxidePlants Medicinalbusiness.industrySARS-CoV-2COVID-19CXCL C-X-C- motif chemokineMDCK Madin-Darby Canine Kidney cellsTLR-4 Toll-like receptor-4COVID-19 Drug TreatmentComplementary and alternative medicineViral infectionLPS lipopolysaccharidesRSV respiratory syncytial virusQFPD Qingfeipaidu decoctionbusinessLung congestionECMO extracorporeal membrane oxygenationMAPK mitogen-activated protein kinasePhytotherapyDrugs Chinese HerbalPhytomedicine : international journal of phytotherapy and phytopharmacology
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Oral lesions in HIV positive AIDS adolescents perinatally infected undergoing HAART

2010

Objective: To assess the prevalence of the oral lesions related to HIV-infection (HIV-OL) in HIV+/AIDS adolescents (=13 years old), and the differences with HIV+/AIDS children (=3 - 0.05). Oral candidiasis was the most prevalent oral lesion in both groups. Association (p <0.05) of a high prevalence of HIV-OL and oral candidiasis with a high viral load was observed in both study groups. Conclusions: Adolescents perinatally HIV-infected have a high prevalence of HIV-OL. Oral candidiasis still is the most frequent oral opportunistic infection. Oral lesions could have association to viral failure in HIV+/AIDS adolescents undergoing HAART

Pediatricsmedicine.medical_specialtyImmune statusOpportunistic infectionbusiness.industryHuman immunodeficiency virus (HIV)virus diseases:CIENCIAS MÉDICAS [UNESCO]medicine.disease_causemedicine.diseaseAntiretroviral therapyLesionOtorhinolaryngologyAcquired immunodeficiency syndrome (AIDS)ImmunologyUNESCO::CIENCIAS MÉDICASmedicineSurgeryHealth organizationmedicine.symptombusinessGeneral DentistryViral load
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Factors Associated with Nonsuppression of HIV Infection in the Spanish VACH Cohort.

2020

We aim to determine the prevalence of HIV nonsuppression and factors associated with it. This is a cross-sectional multicenter study carried out in January 2016 with data of the VACH Cohort, a registry participated by 23 hospitals from most regions of Spain. The prevalence of HIV nonsuppression, defined as HIV RNA ≥200 copies/mL, is documented. The possible association of HIV nonsuppression with sociodemographic and clinical variables is assessed with a logistic regression analysis. A total of 30,843 adult patients are included; 7,358 of them (23.86%) have nonsuppressed HIV. An association is found between nonsuppression of HIV and the following variables: lower body mass index, lower age o…

Pediatricsmedicine.medical_specialtybusiness.industryCoinfectionImmunologyHuman immunodeficiency virus (HIV)HIV InfectionsViral Loadmedicine.disease_causeCD4 Lymphocyte CountInfectious DiseasesCross-Sectional StudiesMulticenter studyAnti-Retroviral AgentsRisk FactorsVirologyChild PreschoolCohortMedicineHumansbusinessAIDS research and human retroviruses
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Pyrrolo[1,2-f]phenanthridines and related non-rigid analogues as antiviral agents.

2002

Abstract The pyrrolo[1,2- f ]phenanthridines 8 – 22 and the corresponding non-rigid analogues 23 – 41 were synthesised and their ability to inhibit the replication of HIV-1 was tested. Only the polycyclic derivatives 10 , 11 , and 13 showed a weak anti -HIV activity, whereas several pyrrolo-phenanthridines ( 8 , 10 , 16 – 18 ) were found to stimulate the multiplication of MT-4 cells at low concentrations. Derivative 10 demonstrated to possess the unique property of stimulating the multiplication of lymphocytes joined to HIV inhibition.

PharmacologyModels MolecularMolecular modelChemistryStereochemistryAnti-HIV AgentsCell SurvivalOrganic ChemistryHuman immunodeficiency virus (HIV)HIV InfectionsGeneral Medicinemedicine.disease_causeChemical synthesisIn vitroVirusCell LinePhenanthridinesStructure-Activity RelationshipDrug DiscoverymedicineHIV-1HumansPyrrolesVolume concentrationEuropean journal of medicinal chemistry
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Control of HIV-infection with Visits Scheduled Every Four or Every Six Months. A Comparative Randomized Study

2011

PharmacologyPediatricsmedicine.medical_specialtyEvery Six MonthsRandomized controlled triallawbusiness.industryVirologyHuman immunodeficiency virus (HIV)Medicinebusinessmedicine.disease_causelaw.inventionAntiviral Research
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