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1.
Cancer ; 130(18): 3180-3187, 2024 Sep 15.
Artigo em Inglês | MEDLINE | ID: mdl-38718047

RESUMO

BACKGROUND: Antiretroviral therapy has reduced the incidence and mortality of AIDS-defining malignancies (ADM); however, non-AIDS-defining malignancies (NADM) are a major cause of death among people living with HIV (PLWH) today. Though current guidelines suggest that PLWH should receive the same treatment as the general population, there are limited studies focused on how HIV status affects the prognosis of cancers. The present study aimed to investigate the characteristics and prognosis of malignant diseases among PLWH in Japan. METHODS: Patients with HIV diagnosed with malignant diseases at our institution between 2011 and 2021 were retrospectively reviewed. RESULTS: There were 205 patients who were diagnosed with malignancies. Of these, 87 (42.4%) were diagnosed with ADM and 118 (57.6%) were diagnosed with NADM. Among 69 patients who received chemotherapy for ADM, 24 (34.8%) developed AIDS-defining opportunistic infections during treatment. In contrast, only one (1.8%) of the 56 patients administered chemotherapy for NADM developed AIDS-defining opportunistic infections. Complications of opportunistic infections at diagnosis of malignancies, low CD4+ T-cell count, positive HIV RNA, and nonadministration of antiretroviral therapy were associated with 5-year overall survival among patients with malignant lymphomas. However, the variables associated with HIV did not affect NADM prognosis. CONCLUSIONS: In this analysis, HIV status had a small impact on the prognosis of malignant diseases in PLWH. Few patients with NADM developed AIDS-defining opportunistic infections after receiving chemotherapy.


Assuntos
Infecções por HIV , Neoplasias , Humanos , Masculino , Feminino , Japão/epidemiologia , Infecções por HIV/tratamento farmacológico , Infecções por HIV/complicações , Pessoa de Meia-Idade , Prognóstico , Neoplasias/complicações , Neoplasias/epidemiologia , Neoplasias/mortalidade , Adulto , Estudos Retrospectivos , Idoso , Contagem de Linfócito CD4 , Infecções Oportunistas Relacionadas com a AIDS/epidemiologia
2.
AIDS Care ; 35(11): 1741-1748, 2023 11.
Artigo em Inglês | MEDLINE | ID: mdl-36912767

RESUMO

Evidence suggests adverse health effects from vaporized nicotine (VN) use, such as electronic "e" cigarettes, and limited efficacy to aid tobacco cessation. People with HIV (PWH) smoke tobacco at higher rates than the general population, with greater morbidity, highlighting the necessity of effective tobacco cessation tools. PWH may be more vulnerable to adverse effects of VN. Using semi-structured 1:1 interviews, we examined health beliefs regarding VN, patterns of use, and perceived effectiveness for tobacco cessation among PWH in HIV care at three geographically diverse U.S. sites. PWH (n = 24) had limited understanding of VN product content or health effects, presuming VN less harmful than tobacco cigarettes (TC). VN failed to adequately replicate the psychoactive effects or desired ritual of smoking TC. Concurrent TC use, and continuous VN use throughout the day, was common. Satiety using VN was elusive, and consumption quantity was difficult to track. VN had limited desirability and durability as a TC cessation tool among the interviewed PWH.


Assuntos
Infecções por HIV , Abandono do Hábito de Fumar , Humanos , Nicotina , Dispositivos para o Abandono do Uso de Tabaco/efeitos adversos , Infecções por HIV/tratamento farmacológico , Infecções por HIV/etiologia , Nível de Saúde , Fumar/efeitos adversos , Fumar/epidemiologia
3.
Clin Infect Dis ; 75(Suppl 1): S51-S60, 2022 08 15.
Artigo em Inglês | MEDLINE | ID: mdl-35738253

RESUMO

BACKGROUND: Immunization of vulnerable populations with distinct immunity often results in suboptimal immunogenicity, durability, and efficacy. METHODS: Safety and immunogenicity profiles of BNT162b2 messenger RNA coronavirus disease 2019 (COVID-19) vaccine, among people living with human immunodeficiency virus (HIV), were evaluated in 28 perinatally HIV-infected patients under antiretroviral therapy (ART) and 65 healthy controls (HCs) with no previous history of COVID-19. Thus, we measured severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)-specific humoral and CD4+ T cell responses. Samples were collected before vaccination (baseline, day [D] 0), at the second dose (D21), and at 4 weeks (D28) and 6 months (D180) after D0. Proteomic profiles at D0 and D28 were assessed with a multiplexed proximity extension assay (Olink) on plasma samples. RESULTS: All HIV-infected patients mounted similar anti-SARS-CoV-2 humoral responses to those of HCs, albeit with lower titers of anti-trimeric S at D28 (P = .01). Only peripheral blood mononuclear cells of HIV-infected patients demonstrated at D28 an impaired ability to expand their specific (CD40L+) CD4+ T-cell populations. Similar humoral titers were maintained between the 2 groups at 6-months follow-up. We additionally correlated baseline protein levels to either humoral or cellular responses, identifying clusters of molecules involved in immune response regulation with inverse profiles between the 2 study groups. CONCLUSIONS: Responses of ART-treated HIV-infected patients, compared to those of HCs, were characterized by distinct features especially within the proteomic compartment, supporting their eligibility to an additional dose, similarly to the HC schedule.


Assuntos
COVID-19 , Infecções por HIV , Adolescente , Anticorpos Antivirais , Vacina BNT162 , COVID-19/prevenção & controle , Vacinas contra COVID-19 , HIV , Infecções por HIV/tratamento farmacológico , Humanos , Imunogenicidade da Vacina , Leucócitos Mononucleares , Proteômica , RNA Mensageiro/uso terapêutico , SARS-CoV-2 , Adulto Jovem
4.
Adv Exp Med Biol ; 1337: 205-210, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34972907

RESUMO

AIM: The aim of this study was the evaluation of health-related quality of life (HRQoL) of HIV-infected patients and the effect of their illness in their living costs. MATERIAL AND METHOD: This is a cross-sectional study and the study sample, which was a sample of convenience, included 98 HIV-infected patients from March to May 2019 at the General Oncology hospital "Oi Agioi Anargyroi" in Greece. The main tools of the survey were the Greek version of the MOS-HIV and a questionnaire used for measuring rehabilitation costs in trauma patients adjusted for the needs of the this study. RESULTS: A total of 98 patients were inducted in our study aged 49.3 ± 11.3 years, most of them males (68.3%). HRQoL was assessed in 11 individual dimensions. The highest score was found in the dimensions of role functioning (73.47 ± 36.93), physical functioning (72.53 ± 26.65), and social functioning (71.63 ± 32.3). Regarding the patients' living costs over the last month due to their illness, the highest burden comes from other expenses (152.4 ± 179.5), services provided by a psychologist (142.8 ± 170.6) and medical visits (142.8 ± 170.6). CONCLUSIONS: As the HIV infection is characterized as a chronic disease, the economic cost due to the illness needs to be studied as it affects the extent to which an HIV-infected patient can access medical care and meet emerging needs. Therefore, future research should focus in the economic dimension of the illness in relation with the quality of life of these patients and their relatives, so that new health policies may arise.


Assuntos
Infecções por HIV , Qualidade de Vida , Efeitos Psicossociais da Doença , Estudos Transversais , Grécia/epidemiologia , Infecções por HIV/tratamento farmacológico , Infecções por HIV/epidemiologia , Custos de Cuidados de Saúde , Humanos , Masculino , Inquéritos e Questionários
5.
Molecules ; 26(2)2021 Jan 09.
Artigo em Inglês | MEDLINE | ID: mdl-33435385

RESUMO

Histones play important roles in chromatin functioning and gene transcription, but in the intercellular space, they are harmful since they stimulate systemic inflammatory and toxic responses. Electrophoretically homogeneous IgGs against myelin basic protein (MBP), as well as H3 and H4 histones, were isolated from sera of HIV-infected patients. In contrast to known classical proteases, these IgGs split exclusively only histones and MBP but no other control proteins. Among 13 sites of hydrolysis of H3 by IgGs against H3 and 14 sites for anti-MBP IgGs, only two sites of the hydrolysis were the same. Between seven cleavage sites of H4 with IgGs against H4 and 9 sites of this histone hydrolysis by antibodies against MBP, only three sites were the same. The sites of hydrolysis of H3 (and H4) with abzymes against these histones and against MBP were different, but several expended protein clusters containing hydrolysis sites are partially overlapped. The existence of enzymatic cross-reactivity of abzymes against H3 and H4 and MBP represents a great menace to humans since due to cell apoptosis, histones constantly occur in human blood. They can hydrolyze MBP of the myelin sheath of axons and play a negative role in the pathogenesis of HIV-infected patients.


Assuntos
Infecções por HIV/imunologia , Histonas/imunologia , Imunoglobulina G/imunologia , Proteína Básica da Mielina/imunologia , Adulto , Reações Antígeno-Anticorpo , Feminino , Humanos , Hidrólise , Masculino , Adulto Jovem
6.
Qual Life Res ; 29(10): 2661-2668, 2020 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-32335815

RESUMO

OBJECTIVE: To assess health status of HIV-positive patients and to examine its predictors in Kunming, China. METHODS: HIV-positive patients were recruited from a general hospital and an infection hospital in 2015. Health status of the patients was evaluated using standardized questions on eight health domains (mobility, self-care, pain and discomfort, cognition, interpersonal activities, vision, sleep and energy, and emotional distress) of the WHO World Health Survey. A multivariate linear regression model was employed to explore the predictors of health status. RESULTS: A total of 1,363 HIV patients were recruited. The mean (SD) health status score was 73.4 (18.2), with the prevalence of reporting problems ranging from 17.6% (self-care problems) to 86.3% (vision problems). CD4 count, occupation, household income, accessibility to healthcare services, and healthcare expenditures were found to be significant predictors of health status. CONCLUSIONS: Healthcare services for HIV patients may assist improvement of interpersonal activities and relieve emotional distress, and efforts are needed to continually increase accessibility to the services. Special attention should be given to those at low socioeconomic level and those suffering from low CD4 count.


Assuntos
Infecções por HIV/epidemiologia , Nível de Saúde , Qualidade de Vida/psicologia , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , China/epidemiologia , Feminino , Humanos , Estudos Longitudinais , Masculino , Pessoa de Meia-Idade , Adulto Jovem
7.
Mycopathologia ; 185(2): 339-346, 2020 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-32078723

RESUMO

Histoplasmosis occurs in 5-10% of HIV-infected patients in endemic areas and evolves to severe and disseminated infection with mortality rates over 50% in some regions. This report presents epidemiological, clinical and outcome data from HIV-infected patients with histoplasmosis confirmed by culture and/or at necropsy who were admitted to a Brazilian teaching hospital. Data from 65 patients were obtained from their respective medical and necropsy records. From 2005 to 2018, 36 HIV-infected patients were diagnosed with histoplasmosis confirmed by culture. At admission, most of these patients presented disseminated fungal infection, whereas 15 (41.7%) were simultaneously diagnosed with both HIV infection and histoplasmosis. Fever, weight loss, hepatosplenomegaly, respiratory and digestive symptoms were present in 86.2%, 50%, 44.4% and 41.7% of the patients, respectively. At admission, 24 patients had low CD4 T-cell count and high viral load values. Among the 30 patients who received antifungals, 16 (53.3%) were cured, 13 (43.3%) died, and one was lost to follow-up. Six patients died prior to therapy. From 1990 to 2018, 63 necropsies of patients with Histoplasma capsulatum infection were performed. Of these patients, 29 (46.0%) were HIV-infected individuals, including 21 (72.4%) who presented disseminated histoplasmosis and 21 (72.4%) who were diagnosed with histoplasmosis at necropsy. The epidemiological, clinical and outcome profiles presented herein are similar to those described elsewhere and reinforce the difficulties that are still present in limited-resource settings where advanced immunodeficiency, combined with severe fungal infection and late patient admissions, is related to poor outcomes.


Assuntos
Infecções Oportunistas Relacionadas com a AIDS/diagnóstico , Infecções por HIV/complicações , Histoplasma/isolamento & purificação , Histoplasmose/diagnóstico , Adulto , Autopsia , Brasil/epidemiologia , Contagem de Linfócito CD4 , Feminino , Hospitais de Ensino , Humanos , Terapia de Imunossupressão , Masculino , Prevalência
8.
Wiad Lek ; 72(2): 279-283, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-30903788

RESUMO

OBJECTIVE: Introduction: Surgeons that are working with HIV-infected patients in Ukraine are in a vulnerable state due to the lack of special regulation of this issue in labor, medical law and labor contract, as well as the spread of HIV among the population of the country. The aim of this article is to determine and uncover the content of the rights of surgeons while working with HIV-infected patients in Ukraine. PATIENTS AND METHODS: Materials and Methods: The research materials of the rights of the surgeons that are working with HIV-infected patients consist of national legislation, official explanations of the Social Insurance Fund of Ukraine, statistics on HIV infection. The research methods that have been used are cross-sectoral, complex statistical, analysis and synthesis. In order to obtain the results of the research the norms of medical, labor and civil law have been analyzed. RESULTS: Review: The authors of the article have emphasized and described the rights of surgeons that are working with HIV-infected patients. CONCLUSION: Conclusions: It has been proved that the current system of surgeons' rights needs to be improved. It has been offered: to establish, at the legislative level, the responsibility of the patient with HIV infection to warn a medical employee about his infection in case of surgery or other medical manipulation that leads to contact with blood or other biological materials; to revise and significantly increase the payment of obligatory insurance of surgeons, if they are infected by a patient with HIV infection.


Assuntos
Infecções por HIV , Cirurgiões , HIV , Humanos , Ucrânia
9.
Emerg Infect Dis ; 24(11): 1998-2002, 2018 11.
Artigo em Inglês | MEDLINE | ID: mdl-30334702

RESUMO

Cryptococcus gattii traditionally infects immunocompetent hosts and causes devastating pulmonary or central nervous system disease. However, this infection rarely occurs in patients infected with HIV. We report 3 cases of HIV-associated C. gattii complex infections in the southeastern United States. Detection of C. gattii in HIV-infected patients in this region warrants increased awareness of this threat to ensure appropriate diagnosis and treatment to optimize patient outcomes.


Assuntos
Cryptococcus gattii/isolamento & purificação , Infecções por HIV/diagnóstico por imagem , HIV/isolamento & purificação , Meningite Criptocócica/diagnóstico por imagem , Adulto , Infecções por HIV/complicações , Infecções por HIV/tratamento farmacológico , Infecções por HIV/virologia , Humanos , Masculino , Meningite Criptocócica/complicações , Meningite Criptocócica/tratamento farmacológico , Meningite Criptocócica/microbiologia , Pessoa de Meia-Idade , Sudeste dos Estados Unidos , Tomografia Computadorizada por Raios X
10.
J Mol Recognit ; 31(7): e2703, 2018 07.
Artigo em Inglês | MEDLINE | ID: mdl-29457292

RESUMO

Histones and their posttranslational modified forms play pivotal roles in chromatin functioning and gene transcription. Also, histones are harmful when they enter the intercellular space; their administration to animals results in systemic inflammatory and toxic responses. Autoantibodies having enzymatic activities (abzymes) are the specific feature of several autoimmune and viral diseases. Electrophoretically homogeneous IgGs containing no canonical proteases were purified from sera of HIV-infected patients by using several affinity chromatographies. In contrast to known canonical proteases, Abs from HIV-infected patients hydrolyzed exclusively only histones but no other control globular proteins. The H3 and H4 histone cleavage sites by antihistone IgGs were determined by matrix-assisted laser desorption/ionization mass spectrometry for the first time. Two clusters of H3 hydrolysis contain major (↕) and minor (*) cleavage sites: 18-K*Q*LA↕TK*A↕AR*KS↕A*P-30 and 34-G*VK*KPHR*YRPGTVA*L*R-50. H4 histone has only 1 cluster of cleavage sites containing additionally moderate (↓) cleavage sites: 15-A↕KR↕HR↕KVLR↓D*NIQ↓GIT*K-31. Sites of these histones cleavage correspond mainly to their known epitopes. It was surprising that most of the cleavage sites of histones are involved in the interaction with DNA of nucleosome core. Because histones act as damage-associated molecules, abzymes against H3 and H4 can play important role in pathogenesis of AIDs and probably other viral and immune diseases.


Assuntos
Anticorpos Catalíticos/metabolismo , Autoanticorpos/metabolismo , Infecções por HIV/imunologia , Histonas/química , Imunoglobulina G/metabolismo , Adolescente , Adulto , Sequência de Aminoácidos , Anticorpos Catalíticos/biossíntese , Anticorpos Catalíticos/isolamento & purificação , Autoanticorpos/biossíntese , Autoanticorpos/isolamento & purificação , Sítios de Ligação , Biocatálise , DNA/química , DNA/metabolismo , Epitopos/química , Feminino , HIV/imunologia , Infecções por HIV/genética , Infecções por HIV/metabolismo , Infecções por HIV/patologia , Histonas/imunologia , Histonas/metabolismo , Humanos , Hidrólise , Soros Imunes/química , Imunoglobulina G/biossíntese , Imunoglobulina G/isolamento & purificação , Masculino , Modelos Moleculares , Ligação Proteica , Isoformas de Proteínas/química , Isoformas de Proteínas/imunologia , Isoformas de Proteínas/metabolismo , Estrutura Secundária de Proteína , Proteólise , Espectrometria de Massas por Ionização e Dessorção a Laser Assistida por Matriz
11.
Electrophoresis ; 39(20): 2581-2589, 2018 10.
Artigo em Inglês | MEDLINE | ID: mdl-29772601

RESUMO

In this work a hollow mesoporous structured molecularly imprinted polymer was synthetized and used as adsorbent in pipette-tip solid-phase extraction for the determination of lamivudine (3TC), zidovudine (AZT) and efavirenz (EFZ) from plasma of human immunodeficiency virus (HIV) infected patients by high-performance liquid chromatography (HPLC). All parameters that influence the recovery of the pipette tip based on hollow mesoporous molecularly imprinted polymer solid-phase extraction (PT-HM-MIP-SPE) method were systematically studied and discussed in detail. The adsorbent material was prepared using methacrylic acid and 4-vinylpyridine as functional monomers, ethylene glycol dimethacrylate as crosslinker, acetonitrile as solvent, 4,4'-azobis(4-cyanovaleric acid) as radical initiator, benzalkonium chloride as surfactant, 3TC, and AZT as templates. The simultaneous separation of 3TC, AZT and EFZ by HPLC-UV was performed using a Gemini C18 Phenomenex® column (250 mm × 4.6 mm, 5 µm) and mobile phase consisting of acetonitrile: water pH 3.2 (68:32, v/v), flow rate of 1.0 mL/min and λ = 260 nm. The method was linear over the concentration range from 0.25 to 10 µg/mL for 3TC and EFZ, and 0.05 to 2.0 µg mL-1 for AZT, with correlation coefficients larger than 0.99 for all analytes. Recovery ± relative standard deviations (RSDs %) were 41.99 ± 2.38%, 82.29 ± 1.63%, and 83.72 ± 7.52% for 3TC, AZT, and EFZ, respectively. The RSDs and relative errors (REs) were lower than 15% for intra and interday assays. The method has been successfully applied for monitoring HIV-infected patients outside the therapeutic dosage.


Assuntos
Antirretrovirais/sangue , Infecções por HIV/tratamento farmacológico , Impressão Molecular/métodos , Extração em Fase Sólida/métodos , Antirretrovirais/isolamento & purificação , Antirretrovirais/uso terapêutico , Cromatografia Líquida de Alta Pressão , Humanos , Limite de Detecção , Modelos Lineares , Reprodutibilidade dos Testes
12.
Respiration ; 96(1): 52-65, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-29635251

RESUMO

The substantial decline in the Pneumocystis jirovecii pneumonia (PCP) incidence in HIV-infected patients after the introduction of antiretroviral therapy (ART) in resource-rich settings and the growing number of non-HIV-infected immunocompromised patients at risk leads to considerable epidemiologic changes with clinical, diagnostic, and treatment consequences for physicians. HIV-infected patients usually develop a subacute course of disease, while non-HIV-infected immunocompromised patients are characterized by a rapid disease progression with higher risk of respiratory failure and higher mortality. The main symptoms usually include exertional dyspnea, dry cough, and subfebrile temperature or fever. Lactate dehydrogenase may be elevated. Typical findings on computed tomography scans of the chest are bilateral ground-glass opacities with or without cystic lesions, which are usually associated with the presence of AIDS. Empiric treatment should be initiated as soon as PCP is suspected. Bronchoalveolar lavage has a higher diagnostic yield compared to induced sputum. Immunofluorescence is superior to conventional staining. A combination of different diagnostic tests such as microscopy, polymerase chain reaction, and (1,3)-ß-D-glucan is recommended. Trimeth-oprim/sulfamethoxazole for 21 days is the treatment of choice in adults and children. Alternative treatment regimens include dapsone with trimethoprim, clindamycin with primaquine, atovaquone, or pentamidine. Patients with moderate to severe disease should receive adjunctive corticosteroids. In newly diagnosed HIV-infected patients with PCP, ART should be initiated as soon as possible. In non-HIV-infected immunocompromised patients, improvement of the immune status should be discussed (e.g., temporary reduction of immunosuppressive agents). PCP prophylaxis is effective and depends on the immune status of the patient and the underlying immunocompromising disease.


Assuntos
Infecções por HIV/complicações , Soronegatividade para HIV , Hospedeiro Imunocomprometido , Pneumocystis carinii , Pneumonia por Pneumocystis/diagnóstico , Pneumonia por Pneumocystis/tratamento farmacológico , Combinação Trimetoprima e Sulfametoxazol/uso terapêutico , Adulto , Lavagem Broncoalveolar , Criança , Quimioterapia Combinada , Imunofluorescência , Humanos , Pulmão/diagnóstico por imagem , Masculino , Pessoa de Meia-Idade , Pneumocystis carinii/isolamento & purificação , Pneumonia por Pneumocystis/complicações , Radiografia Torácica
13.
J Infect Dis ; 216(12): 1525-1533, 2017 12 19.
Artigo em Inglês | MEDLINE | ID: mdl-29253205

RESUMO

Objective: Quantify proportion of human immunodeficiency virus (HIV)-infected patients with specific comorbidities receiving healthcare coverage from commercial, Medicaid, and Medicare payers. Methods: Data from MarketScan research databases were used to select adult HIV-infected patients from each payer. Treated HIV-infected patients were matched to HIV-negative controls. Cross-sectional analyses were performed between 2003 and 2013 among HIV-infected patients to quantify the proportion with individual comorbidities over the period, by payer. Results: Overall, 36298 HIV-infected patients covered by commercial payers, 26246 covered by Medicaid payers, and 1854 covered by Medicare payers were identified between 2003 and 2013. Essential hypertension (31.4%, 39.3%, and 76.2%, respectively), hyperlipidemia (29.2%, 22.1%, and 49.6%), and endocrine disease (21.8%, 27.2%, and 54.0%) were the most common comorbidities. Comparison of data from 2003 to data from 2013 revealed significant increases across payers in the percentage of patients with the comorbidities specified above (P < .05). Across all payers, the proportions of treated HIV-infected patients with deep vein thrombosis, hepatitis C, renal impairment, thyroid disease, and liver disease from 2003 to 2013 was significantly greater (P < .05) than for matched controls. Conclusions: Comorbidities are common among the aging HIV-infected population and have increased over time. There should be a consideration in treatment choices for HIV infection, including the choices of antiretroviral regimens.


Assuntos
Comorbidade , Infecções por HIV/complicações , Adulto , Idoso , Idoso de 80 Anos ou mais , Estudos Transversais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Estados Unidos/epidemiologia
14.
Emerg Infect Dis ; 23(7): 1124-1132, 2017 07.
Artigo em Inglês | MEDLINE | ID: mdl-28628462

RESUMO

The attributable fraction (AF) of influenza virus detection to illness has not been described for patients in different age groups or with different HIV infection statuses. We compared the age group-specific prevalence of influenza virus infection among patients with influenza-like illness (ILI) or severe acute or chronic respiratory illness (SARI and SCRI, respectively) with that among controls, stratified by HIV serostatus. The overall AF for influenza virus detection to illness was 92.6% for ILI, 87.4% for SARI, and 86.2% for SCRI. Among HIV-uninfected patients, the AF for all syndromes was highest among persons <1 and >65 years of age and lowest among persons 25-44 years of age; this trend was not observed among HIV-infected patients. Overall, influenza viruses when detected in patients with ILI, SARI, or SCRI are likely attributable to illness. This finding is particularly likely among children and the elderly irrespective of HIV serostatus and among HIV-infected persons irrespective of age.


Assuntos
Coinfecção/epidemiologia , Infecções por HIV/epidemiologia , Infecções por HIV/virologia , Orthomyxoviridae , Infecções Respiratórias/epidemiologia , Infecções Respiratórias/virologia , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Criança , Pré-Escolar , Feminino , História do Século XXI , Humanos , Lactente , Recém-Nascido , Masculino , Pessoa de Meia-Idade , Orthomyxoviridae/classificação , Orthomyxoviridae/genética , Vigilância da População , Prevalência , Infecções Respiratórias/diagnóstico , Infecções Respiratórias/história , Índice de Gravidade de Doença , África do Sul/epidemiologia , Adulto Jovem
15.
J Mol Recognit ; 30(3)2017 03.
Artigo em Inglês | MEDLINE | ID: mdl-27862500

RESUMO

Histones and their posttranslational modifications have key roles in chromatin remodeling and gene transcription. Besides intranuclear functions, histones act as damage-associated molecules when they are released into the extracellular space. Administration of histones to animals leads to systemic inflammatory and toxic responses. Autoantibodies with enzymatic activities (abzymes) are distinctive feature of some autoimmune and viral diseases. Electrophoretically and immunologically homogeneous IgGs containing no canonical enzymes were isolated from sera of human immunodeficiency virus-infected patients by chromatography on several affinity sorbents. In contrast to canonical proteases (trypsin, chymotrypsin, and proteinase K), IgGs from human immunodeficiency virus-infected patients purified by affinity chromatography on Sepharose containing immobilized histones specifically recognized and hydrolyzed only histones but not many other tested globular proteins. Using matrix-assisted laser desorption/ionization mass spectrometry, the sites of H1 histone (193 amino acids [AAs]) cleavage by anti-H1 histone IgGs were determined for the first time. It was shown that 1 cluster of 2 major and 4 moderate sites of cleavage is located at the beginning (106-112 AAs) of the known antigenic determinants disposed at the long C-terminal sequence of H1. Two clusters of minor and very weak sites of the protein cleavage correspond to middle (8 sites, 138-158 AAs) and terminal (5 sites, 166-176 AAs) parts of the antigenic determinants. It was shown that in contrast to canonical proteases, N-terminal part of H1 histone (1-136 AAs) containing no antigenic determinants is an unpredictably very resistant against hydrolysis by abzymes, while it can be easily cleavage by canonical proteases. Because histones act as damage-associated molecules, abzymes against H1 and other histones can play important role in pathogenesis of acquired immune deficiency syndrome and probably other different diseases.


Assuntos
Infecções por HIV/imunologia , Histonas/química , Histonas/metabolismo , Imunoglobulina G/metabolismo , Adulto , Motivos de Aminoácidos , Sítios de Ligação , Catálise , Cromatografia de Afinidade , Feminino , Infecções por HIV/sangue , Humanos , Imunoglobulina G/sangue , Masculino , Modelos Moleculares , Proteólise , Espectrometria de Massas por Ionização e Dessorção a Laser Assistida por Matriz , Especificidade por Substrato , Adulto Jovem
16.
AIDS Behav ; 21(Suppl 2): 204-215, 2017 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-28856539

RESUMO

In HIV-infected drinkers, alcohol types more likely to cause inflammation could plausibly increase the risk of HIV disease progression. We therefore assessed the association between alcohol type and plasma HIV RNA level (HIV viral load) among HIV-infected drinkers not on antiretroviral therapy (ART) in Russia and Uganda. We analyzed the data of participants from cohorts in Russia and Uganda and assessed their HIV viral load at enrollment by the alcohol type predominantly consumed. We defined predominant alcohol type as the alcohol type contributing >50% of total alcohol consumption in the 1 month (Russia) or 3 months (Uganda) prior to enrollment. Using multiple linear regression, we compared log10 HIV viral load by predominant alcohol type, controlling for age, gender, socioeconomic status, total number of standard drinks, frequency of drinking ≥6 drinks/occasion, and in Russia, history of injection drug use. Most participants (99.2% of 261 in Russia and 98.9% of 352 in Uganda) predominantly drank one alcohol type. In Russia, we did not find evidence for differences in viral load levels between drinkers of fortified wine (n = 5) or hard liquor (n = 49), compared to drinkers of beer/low-ethanol-content cocktails (n = 163); however, wine/high-ethanol-content cocktail drinkers (n = 42) had higher mean log10 viral load than beer/low-ethanol-content cocktail drinkers (ß = 0.38, 95% CI 0.07-0.69; p = 0.02). In Uganda, we did not find evidence for differences in viral load levels between drinkers of locally-brewed beer (n = 41), commercially-distilled spirits (n = 38), or locally-distilled spirits (n = 43), compared to drinkers of commercially-made beer (n = 218); however, wine drinkers (n = 8) had lower mean log10 HIV viral load (ß = -0.65, 95% CI -1.36 to 0.07, p = 0.08), although this did not reach statistical significance. Among HIV-infected drinkers not yet on ART in Russia and Uganda, we observed an association between the alcohol type predominantly consumed and the HIV viral load level in the Russia sample. These exploratory results suggest that, in addition to total number of drinks and drinking patterns, alcohol type might be a dimension of alcohol use that merits examination in studies of HIV and alcohol related outcomes.


Assuntos
Consumo de Bebidas Alcoólicas/efeitos adversos , Bebidas Alcoólicas , Infecções por HIV/sangue , RNA Viral/sangue , Adulto , Consumo de Bebidas Alcoólicas/epidemiologia , Bebidas Alcoólicas/efeitos adversos , Cerveja , Progressão da Doença , Feminino , Infecções por HIV/tratamento farmacológico , Infecções por HIV/virologia , Humanos , Masculino , Pessoa de Meia-Idade , Risco , Federação Russa/epidemiologia , Abuso de Substâncias por Via Intravenosa/epidemiologia , Uganda , Carga Viral , Vinho , Adulto Jovem
17.
J Mol Recognit ; 29(8): 346-62, 2016 08.
Artigo em Inglês | MEDLINE | ID: mdl-26799177

RESUMO

Histones and their post-translational modifications have key roles in chromatin remodeling and gene transcription. Besides intranuclear functions, histones act as damage-associated molecular pattern molecules when they are released into the extracellular space. Administration of exogenous histones to animals leads to systemic inflammatory and toxic responses through activating Toll-like receptors and inflammasome pathways. Here, using ELISA it was shown that sera of HIV-infected patients and healthy donors contain autoantibodies against histones. Autoantibodies with enzymic activities (abzymes) are a distinctive feature of autoimmune diseases. It was interesting whether antibodies from sera of HIV-infected patients can hydrolyze human histones. Electrophoretically and immunologically homogeneous IgGs were isolated from sera of HIV-infected patients by chromatography on several affinity sorbents. We present first evidence showing that 100% of IgGs purified from the sera of 32 HIV-infected patients efficiently hydrolyze from one to five human histones. Several rigid criteria have been applied to show that the histone-hydrolyzing activity is an intrinsic property of IgGs of HIV-infected patients. The relative efficiency of hydrolysis of histones (H1, H2a, H2b, H3, and H4) significantly varied for IgGs of different patients. IgGs from the sera of 40% of healthy donors also hydrolyze histones but with an average efficiency approximately 16-fold lower than that of HIV-infected patients. Similar to proteolytic abzymes from the sera of patients with several autoimmune diseases, histone-hydrolyzing IgGs from HIV-infected patients were inhibited by specific inhibitors of serine and of metal-dependent proteases, but an unexpected significant inhibition of the activity by specific inhibitor of thiol-like proteases was also observed. Because IgGs can efficiently hydrolyze histones, a negative role of abzymes in development of acquired immune deficiency syndrome cannot be excluded. Copyright © 2016 John Wiley & Sons, Ltd.


Assuntos
Anticorpos Anti-HIV/metabolismo , Infecções por HIV/imunologia , Histonas/química , Imunoglobulina G/metabolismo , Adulto , Autoanticorpos/sangue , Autoanticorpos/metabolismo , Feminino , Anticorpos Anti-HIV/sangue , Infecções por HIV/sangue , HIV-1/imunologia , Humanos , Hidrólise , Imunoglobulina G/sangue , Masculino , Adulto Jovem
18.
Diabetes Metab Res Rev ; 32(6): 512-3, 2016 09.
Artigo em Inglês | MEDLINE | ID: mdl-26936763

RESUMO

In the past, the increased prevalence of diabetes in HIV infection has been attributed to antiretroviral drugs. In this study, Cameroonians with HIV infection were shown in a paper in this issue of the Journal to be more likely to have diabetes if they were not on therapy. Future research should examine if the diabetes is related to the host response to infection or to socioeconomic factors that might both contribute to not being on anti-retroviral therapy and predispose to diabetes. Copyright © 2016 John Wiley & Sons, Ltd.


Assuntos
Diabetes Mellitus/epidemiologia , Infecções por HIV/virologia , Camarões/epidemiologia , Diabetes Mellitus/etiologia , Infecções por HIV/complicações , HIV-1/fisiologia , Humanos , Prevalência , Prognóstico
19.
J Antimicrob Chemother ; 70(7): 2104-7, 2015 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-25769303

RESUMO

BACKGROUND: Tenofovir is involved in accelerated bone mineral density (BMD) loss. METHODS: We recently published a hip BMD improvement at week 48 [+2.1% (95% CI: -0.6, 4.7) (P = 0.043)] in HIV-infected patients with osteopenia/osteoporosis randomized to switch from tenofovir to abacavir (n = 26), although without reaching statistical significance compared with those who maintained tenofovir (n = 28). Here, we present changes at week 48 in bone markers [C-terminal telopeptide of collagen type 1 (CTX), osteocalcin and procollagen type 1 N propeptide (P1NP)] as well as in circulating levels of three proteins involved in bone regulation [osteoprotegerin, receptor activator for NF-κB ligand (RANKL) and sclerostin, a selective regulator of bone formation through the Wnt pathway] in 44 of these patients. χ(2) or Fisher and Student t-tests were performed according to the distribution of the variables. RESULTS: Bone markers decreased only in the abacavir group [mean (SD) CTX changed from 0.543 (0.495) to 0.301 (0.306) ng/mL; mean (SD) osteocalcin changed from 23.72 (22.20) to 13.95 (12.40) ng/mL; and mean (SD) P1NP changed from 54.68 (54.52) to 28.65 (27.48) ng/mL (P < 0.001 in all cases)], reaching statistical significance between the groups at week 48. Osteoprotegerin did not vary, but sclerostin significantly increased in the abacavir group [from 29.53 (27.91) to 35.56 (34.59) pmol/L, P = 0.002]. No significant differences in osteoprotegerin and sclerostin were detected between the groups at week 48. RANKL values were below the limit of detection in all samples. CONCLUSIONS: The switch from tenofovir to abacavir seems to induce a positive effect on bone tissue, since bone turnover markers decreased. In addition, circulating sclerostin levels increased, a change associated with improved bone properties.


Assuntos
Fármacos Anti-HIV/uso terapêutico , Densidade Óssea , Proteínas Morfogenéticas Ósseas/sangue , Remodelação Óssea , Didesoxinucleosídeos/uso terapêutico , Infecções por HIV/tratamento farmacológico , Tenofovir/uso terapêutico , Proteínas Adaptadoras de Transdução de Sinal , Adulto , Idoso , Fármacos Anti-HIV/efeitos adversos , Biomarcadores/análise , Didesoxinucleosídeos/efeitos adversos , Feminino , Marcadores Genéticos , Infecções por HIV/virologia , HIV-1/isolamento & purificação , Humanos , Masculino , Pessoa de Meia-Idade , Tenofovir/efeitos adversos
20.
J Med Virol ; 87(9): 1517-20, 2015 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-25965115

RESUMO

HEV infection is an emerging public health problem worldwide Data concerning HEV infection in HIV+ patients in Greece is scare. The aim of the study was to determine HEV seroprevalence in patients with HIV infection in Greece. We studied 243 HIV(+) patients 214 men (88%) and 29 women (12%) with a median age of 45 years (range 19-83) who attended the HIV unit of Pathophysiology Department of Laikon General Hospital in Athens for the presence of anti-HEV IgG antibodies with (EIA) (EIA HEV IgG, Adaltis, Rome, Italy Eighteen/243 patients (7.3%) were positive for HEV IgG antibodies, a seroprevalence that was not different from that described for the blood donors group from Greece There was no difference of the presence of HbsAg, hepatitis C and hepatitis A between the HEV(+) and HEV(-) patients. There was no statistically significant difference between the HEV(+) and HEV(-) group in terms of HIV acquisition, sexual orientation, median duration of HIV infection, ART treatment, or duration of ART. Only the median age of HEV(+) was 52 years (35-78) while that of HEV(-) was 44 years (19-83)(P = 0.03). Only 2/18(11.1%) HEV(+) HIV(+) patients had abnormal ALT and AST values. The seroprevalence of hepatitis E in HIV(+) patients in Greece seems to be the same with that of the general population thus implying that HIV infection is not a risk factor for HEV infection and only age shows a positive correlation with seropositivity.


Assuntos
Infecções por HIV/complicações , Anticorpos Anti-Hepatite/sangue , Vírus da Hepatite E/imunologia , Hepatite E/epidemiologia , Hepatite E/imunologia , Adulto , Fatores Etários , Idoso , Idoso de 80 Anos ou mais , Doadores de Sangue , Feminino , Grécia/epidemiologia , Infecções por HIV/tratamento farmacológico , Infecções por HIV/epidemiologia , Infecções por HIV/imunologia , Antígenos de Superfície da Hepatite B/sangue , Anticorpos Anti-Hepatite C/sangue , Hepatite E/virologia , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Soroepidemiológicos , Comportamento Sexual , Adulto Jovem
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