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1.
Respir Med Case Rep ; 19: 150-154, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-27752465

RESUMO

The diagnosis of sarcoidosis in a patient living with HIV infection is an uncommon event and a challenge for clinicians. Clinical manifestations are variable and fluctuating depending to adherence to ARV therapy and to the level of CD4 count. We analyze here one chronic case in which sarcoidosis appeared clinically two years after pulmonary tuberculosis. The course of the disease was influenced and prolonged by frequent interruptions of antiretroviral therapy. Moreover the diagnosis and the decision to treat have been delayed by the need of exclusion of other pathologies, principally tuberculosis reactivation/reinfection, other mycobacterial diseases, hematologic malignancies. We propose a simplified flowchart for diagnosis and follow up of sarcoidosis, which may also be applied to patients with HIV infection. Diagnosis of latent tuberculosis infection (LTBI) may be difficult in these patients, because the immunological paradox of sarcoidosis. For this reason, following exclusion of active tuberculosis, we advise to submit all sarcoidosis patients to IPT (isoniazid preventive therapy), when immunosuppressive therapy is started.

2.
Eur Ann Allergy Clin Immunol ; 44(2): 83-5, 2012 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-22768728

RESUMO

Nasal filters (Sanispira) might represent a novel approach in preventing exacerbations of symptoms of seasonal allergic rhinitis by reducing pollen access to nasal cavities. Female and male voluntary patients between the ages of 18 and 64 years living in Naples area and affected by allergic rhinitis were recruited in an open clinical study. All were allergic to Parietaria pollen as assessed by skin-prick and/or RAST test with or without associated sensitization to other pollens such as Gramineae and Olea europaea. A pollen count was also carried out from 10th April until 30th of June 2011. The results of our study show positive statistical differences between the scores of common nasal symptoms and the reduced use of antihistaminic drugs in patients using nasal filters in comparison to non users. Nasal filters constitute a useful mean to reduce symptoms of seasonal allergic rhinitis in patients suffering from pollen allergy.


Assuntos
Filtração/instrumentação , Rinite Alérgica Sazonal/prevenção & controle , Adolescente , Adulto , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Cavidade Nasal/imunologia , Pólen/imunologia , Adulto Jovem
3.
Clin Microbiol Infect ; 18(8): E289-98, 2012 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-22681969

RESUMO

Through this study we evaluated whether the HIV-1 tropism determined by genotypic analysis correlates with HIV-1 markers, such as CD4 cell count and plasma HIV-RNA. The analysis was performed on 1221 HIV-1 B-subtype infected patients with an available V3 sequence (all maraviroc naive). Of them, 532 were antiretroviral therapy (ART) naive and 689 ART experienced. Tropism determination was performed by using the geno2pheno (co-receptor) algorithm set at a false-positive rate (FPR) of 10% and 2%. Potential associations of FPR with CD4 cell count and viraemia were evaluated. Association of V3 mutations with genotypic-determined tropism was also evaluated according to different FPR ranges. About 26% of patients (either ART naive or ART experienced) were infected by X4-tropic viruses (using the classical 10% FPR cut-off). However, a significantly lower proportion of ART-naive patients had FPR ≤ 2% in comparison with ART-experienced patients (4.9% vs. 12.6%, respectively, p <0.001). The risk of advanced HIV-1 infection (with CD4 cell count ≤ 200 cells/mm(3)) was significantly greater in X4-infected patients, either ART-naive (OR (95% CI)), 4.2 (1.8-9.2); p 0.0006) or ART-experienced (2.3 (1.4-3.6); p 0.0003), with FPR set at 2% (but not at 10%). This finding was confirmed by multivariable logistic analysis. No relationship was found between viraemia and FPR ≤2%. Some X4-related mutations were significantly associated with FPR ≤2% (ART-naive patients, S11R, Y21V, G24K and G24R, p ≤0.001; ART-experienced patients, Y7K, S11R, H13Y, p ≤0.002). In conclusion, these findings show that within the context of genotypically-assessed CXCR4 tropism, FPR ≤2% defines (far better than 10%-FPR) a viral population associated with low CD4 rank, with potentially greater cytopathic effect, and with more advanced disease.


Assuntos
Linfócitos T CD4-Positivos/virologia , Reações Falso-Positivas , Infecções por HIV/virologia , HIV-1/patogenicidade , Receptores de HIV/genética , Tropismo Viral , Virologia/métodos , Adulto , Terapia Antirretroviral de Alta Atividade/métodos , Contagem de Linfócito CD4 , Feminino , Infecções por HIV/tratamento farmacológico , Infecções por HIV/imunologia , Humanos , Masculino , Pessoa de Meia-Idade , Receptores de HIV/metabolismo , Carga Viral
4.
Patient Prefer Adherence ; 5: 223-8, 2011.
Artigo em Inglês | MEDLINE | ID: mdl-21660104

RESUMO

This study aims to assess direct cost of reconstructive interventions with facial fillers for treatment of HIV (human immunodeficiency virus)-associated facial lipoatrophy (FLA). Evaluation was performed on data from patients enrolled in one arm of a comparative study of immediate versus delayed reconstructive treatment of facial lipoatrophy. Median costs were standardized for efficacy, estimated using data reported by physicians and patient reported outcomes. The variations of the results were evaluated with a sensitivity analysis. Evaluation was performed on 66 patients characterized by significant differences in terms of severity of FLA. Total cost resulted of €140,416.15, with a median cost per patient of €2126.04 (interquartile range [IQR]: 1599-2822). Taking into consideration severity of disease, median costs were €1641.67 (IQR: 1326.67-2126.04) and 2557.12 (IQR: 1939.34-2872.04) (P = 0.0) respectively for patients with low and high severity scores at baseline. Significant differences in term of cost-effectiveness ratios were also found between patients with different severity of FLA, and sensitivity analysis showed that these ratios increase with higher severity scores at baseline and vary widely depending on the costs of filler. Although these results cannot be considered representative because of important limitations, the present study suggests the severity of disease as an important determinant of costs.

5.
Clin Microbiol Infect ; 17(5): 725-31, 2011 May.
Artigo em Inglês | MEDLINE | ID: mdl-20731681

RESUMO

UDPS combined with genotypic algorithms for prediction of HIV-1 co-receptor usage may provide quantitative data about the tropism of each variant present in the viral quasispecies. The aim of the present study was to assess co-receptor usage by ultra-deep pyrosequencing (UDPS), in comparison with the reference phenotypic test (Trofile), in patients who are candidates for CCR5 antagonist treatment, in both circulating and proviral HIV-1. Seventeen patients who were tested by Trofile were enrolled. UDPS of the V3 loop region was carried out on both plasma RNA and proviral DNA. Genotypic prediction of co-receptor usage was established by position-specific score matrices (PSSM) and confirmed, in discordant cases, with geno2pheno. Genetic heterogeneity of the RNA and DNA quasispecies was assessed as well. A total of 196,729 V3 sequences were considered (mean coverage per site, 6346). Concordance between phenotypic test and UDPS with PSSM was 0.82. Geno2pheno results were in line with those obtained with PSSM. Proviral quasispecies were more heterogeneous than those found in circulating HIV. In most patients eligible for CCR5 antagonist treatment, X4 variants were detected in proviral DNA, ranging from 1.0% to 52.7%. UDPS combined with genotypic algorithms for co-receptor usage prediction highlighted the presence of minority variants, with a discordant tropism with respect to the predominant population, in both circulating viral and proviral HIV. In most patients treated with Maraviroc the virological response was independent of the presence of X4 in proviral DNA. The clinical impact of minority X4 variants present in patients who are candidates for anti-CCR5 antagonists remains a crucial point to be addressed.


Assuntos
Antagonistas dos Receptores CCR5 , Genoma Viral , Infecções por HIV/virologia , HIV/genética , Receptores de HIV/genética , Adulto , Terapia Antirretroviral de Alta Atividade , Cicloexanos/farmacologia , Cicloexanos/uso terapêutico , Feminino , HIV/fisiologia , Infecções por HIV/tratamento farmacológico , Humanos , Masculino , Maraviroc , Pessoa de Meia-Idade , Receptores CCR5/genética , Análise de Sequência de DNA , Análise de Sequência de RNA , Triazóis/farmacologia , Triazóis/uso terapêutico , Carga Viral
6.
Clin Infect Dis ; 50(9): 1316-21, 2010 May 01.
Artigo em Inglês | MEDLINE | ID: mdl-20297953

RESUMO

The incidence of and predictors of acquired immunodeficiency syndrome-defining malignancies (ADMs) and non-ADM (NADMs) were evaluated in a large Italian cohort. The incidence of ADM and NADM was 5.0 cases per 1000 person-years of follow-up (95% confidence interval, 4.3-5.8 cases per 1000 person-years of follow-up) and 2.4 cases per 1000 person-years of follow-up (95% confidence interval, 1.9-3.1 cases per 1000 person-years of follow-up), respectively. Lower current CD4 cell count was an independent predictor of developing malignancies, with the association being stronger for ADM than for NADM.


Assuntos
Infecções por HIV/complicações , Neoplasias/epidemiologia , Adulto , Contagem de Linfócito CD4 , Estudos de Coortes , Feminino , Humanos , Incidência , Itália/epidemiologia , Masculino , Prognóstico
7.
Euro Surveill ; 15(7)2010 Feb 18.
Artigo em Inglês | MEDLINE | ID: mdl-20184855

RESUMO

In October 2009, a traveller returning from Africa to Italy was hospitalised with symptoms suggestive of a haemorrhagic fever of unknown origin. The patient was immediately placed in a special biocontainment unit until laboratory investigations confirmed the infection to be caused by a dengue serotype 3 virus. This case reasserts the importance of returning travellers as sentinels of unknown outbreaks occurring in other countries, and highlights how the initial symptoms of dengue fever resemble those of other haemorrhagic fevers, hence the importance of prompt isolation of patients until a final diagnosis is reached.


Assuntos
Vírus da Dengue/classificação , Dengue/diagnóstico , Viagem , Adulto , África , Dengue/fisiopatologia , Dengue/virologia , Vírus da Dengue/genética , Vírus da Dengue/isolamento & purificação , Febre de Causa Desconhecida/diagnóstico , Genótipo , Humanos , Itália , Masculino , Isolamento de Pacientes , Filogenia
8.
Rev Recent Clin Trials ; 4(3): 195-204, 2009 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-20028332

RESUMO

The native HIV-1 Tat protein was chosen as vaccine candidate for phase I clinical trials in both uninfected (ClinicalTrials.gov identifier: NCT00529698) and infected volunteers (ClinicalTrials.gov identifier: NCT00505401). The rationale was based on the role of Tat in the natural infection and AIDS pathogenesis, on the association of Tat-specific immune responses with the asymptomatic stage and slow-progression rate as well as on its sequence conservation among HIV clades (http://www.hiv1tat-vaccines.info/). The parallel conduction in the same clinical centers of randomized, double blind, placebo-controlled phase I studies both in healthy, immunologically competent adults and in HIV-infected, clinically asymptomatic, individuals represents a unique occasion to compare the vaccine-induced immune response in both the preventive and therapeutic setting. In both studies, the same lot of the native Tat protein was administered 5 times, every four weeks, subcute (SC) with alum adjuvant or intradermic (ID), in the absence of adjuvant, at 7.5 microg, 15 microg or 30 microg doses, respectively. The primary and secondary endpoints of these studies were the safety and immunogenicity of the vaccine candidate, respectively. The study lasted 52 weeks and monitoring was conducted for on additional 3 years. The results of both studies indicated that the Tat vaccine is safe and well tolerated both locally and systemically and it is highly immunogenic at all the dosages and by both routes of administration. Vaccination with Tat induced a balanced immune response in uninfected and infected individuals. In particular, therapeutic immunization induced functional antibodies and partially reverted the marked Th1 polarization of anti-Tat immunity seen in natural infection, and elicited a more balanced Th1/Th2 immune response. Further, the number of CD4 T cells correlated positively with anti-Tat antibody titers. Based on these results, a phase II study is ongoing in infected drug-treated individuals (http://www.hiv1tat-vaccines.info/).


Assuntos
Vacinas contra a AIDS/imunologia , Ensaios Clínicos Fase I como Assunto , HIV-1 , Produtos do Gene tat do Vírus da Imunodeficiência Humana/imunologia , Vacinas contra a AIDS/efeitos adversos , Adulto , Método Duplo-Cego , Humanos , Placebos , Ensaios Clínicos Controlados Aleatórios como Assunto , Projetos de Pesquisa
9.
Infection ; 37(3): 203-9, 2009 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-19274429

RESUMO

BACKGROUND: Treatment guidelines for multi-experienced HIV patients have recently evolved from aiming to preserve immunity to achieving virological success, largely due to the availability of new antiretroviral drugs and drug classes. To assess the role of viral suppression on clinical progression following a genotypic resistance test (GRT), we have examined a database on patients failing to respond to combined antiretroviral therapy (cART). METHODS: Patients undergoing a GRT after failure to respond to cART between January 1999 and May 2006 were followed up to December 2006. Time-to-death or a new AIDS event/death were considered to be analysis end-points. Viral suppression (< 50 copies/ml [c/ml]) after GRT, a time-dependent covariate, was tested as predictor of disease progression. RESULTS: Overall, 1,389 patients were included in this observational study. After the GRT, patients were followed up to 72 months (median 28 months, IQ range 13-51 months). During the follow-up, 124 patients (9%) died, and 86 (6%) experienced a new AIDS event. 774 patients (56%) achieved < 50 c/ml HIV-RNA. The results of an adjusted Cox model showed that undetectable HIV-RNA after the GRT was significantly associated with a lower risk of death (hazard ration [HR] 0.46, 95% confidence interval [CI] 0.27-0.76) and AIDS/death (HR 0.43, 95% CI 0.28-0.65). The adjusted hazard ratios suggested a twofold risk reduction. A threefold risk reduction of death related to achieved undetectable viral load was found in patients with resistance to more than one drug class and with CDC-C diagnosis; a fourfold reduction was found in patients with < 200 CD4+/mm(3). CONCLUSIONS: Maximal viral suppression has a large impact on HIV progression, particularly in heavily pre-treated individuals. Our findings support the latest treatment guidelines, which have rapidly evolved from an initial lack of indication to suggestions, and finally to strong recommendations for achieving the goal of suppressing viremia.


Assuntos
Fármacos Anti-HIV/uso terapêutico , Antirretrovirais/uso terapêutico , Farmacorresistência Viral/genética , Infecções por HIV/tratamento farmacológico , HIV-1/genética , Viremia/tratamento farmacológico , Adulto , Terapia Antirretroviral de Alta Atividade , Estudos de Coortes , Progressão da Doença , Farmacorresistência Viral Múltipla/genética , Feminino , Genótipo , Infecções por HIV/mortalidade , Infecções por HIV/virologia , HIV-1/efeitos dos fármacos , Humanos , Itália , Estudos Longitudinais , Masculino , Estudos Retrospectivos , Falha de Tratamento , Carga Viral , Viremia/mortalidade , Viremia/virologia
10.
Infection ; 37(3): 233-43, 2009 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-19169632

RESUMO

OBJECTIVES: The protease inhibitor atazanavir (ATV) can be used either boosted by ritonavir (ATV300/r) or unboosted (ATV400). To date, however, genotypic resistance scores (GRSs) have been developed only for boosted-ATV. We have determined GRS associated with virologic response (VR) for both ATV300/r and ATV400 in highly pre-treated HIV-1 infected patients. PATIENTS AND METHODS: We analyzed the results of genotypic tests available 0-3 months before the initiation of an ATV-containing regimen in 159 patients with HIV-RNA >or= 500 copies/ml (ATV300/r group: 74; ATV400 group: 85) who were enrolled in the CARe study through an Early Access Program. The impact of baseline protease mutations on VR (>or= 1 log(10)copies/ml HIV-RNA decrease at 12-24 weeks) was analyzed using Fisher's exact test. Mutated protease amino acid positions (MPP) with p < 0.20 were retained for further analysis. The GRSs were determined by a step-by-step analysis using the chi(2) test for trend. RESULTS: The GRSs for ATV300/r and ATV400 revealed differing sets of mutations. For ATV300/r, 12 MPPs (10C/I/V + 32I + 34Q + 46I/L + 53L + 54A/M/V + 82A/F/I/T + 84V + 90M - 15E/G/L/V - 69K/M/N/Q/R/T/Y - 72M/ T/V; p = 1.38 x 10(-9)) were the most strongly associated with VR (VR: 100%, 78.3%, 83.3%, 75% and 0% of patients with a score of -2/-1, 0, 1, 2, and >or= 3, respectively); the last three MPPs (I15/H69/I72) were associated with a better VR. For ATV400, nine MPPs (16E + 20I/M/R/T/V + 32I + 33F/I/V + 53L/Y + 64L/M/ V + 71I/T/V + 85V + 93L/M; p = 9.42 x 10(-8)) were most strongly associated with VR (VR: 83.3%, 66.7%, 5.9%, 0% of patients with 0, 1/2, 3, and >or= 4 MPP, respectively). Differences between GRSs for ATV300/r and ATV400 may be due to different ATV drug levels (boosted vs unboosted), favoring different pathways of escape from antiviral pressure. CONCLUSIONS: Both GRSs were independent predictors of response in a multivariable logistic regression model. Nevertheless, cross-validation of these GRSs on different patient databases is required before their implementation in clinical practice.


Assuntos
Farmacorresistência Viral/genética , Infecções por HIV/tratamento farmacológico , Inibidores da Protease de HIV/uso terapêutico , HIV-1 , Mutação , Sequência de Aminoácidos , Terapia Antirretroviral de Alta Atividade , Sulfato de Atazanavir , Contagem de Linfócito CD4 , Distribuição de Qui-Quadrado , Códon , Farmacorresistência Viral Múltipla , Sinergismo Farmacológico , Feminino , Genótipo , Infecções por HIV/virologia , HIV-1/efeitos dos fármacos , HIV-1/genética , Humanos , Modelos Logísticos , Estudos Longitudinais , Masculino , Análise Multivariada , Mutação/genética , Oligopeptídeos/uso terapêutico , Estudos Prospectivos , Piridinas/uso terapêutico , RNA Viral/análise , RNA Viral/genética , Ritonavir/uso terapêutico , Resultado do Tratamento , Carga Viral , Viremia/tratamento farmacológico , Viremia/virologia
11.
J Med Virol ; 81(3): 481-7, 2009 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-19152399

RESUMO

Aim of the study was to determine predictors of the duration of antiretroviral treatment interruption in patients infected with HIV. This pilot prospective, open-label, multicenter trial comprised 62 HIV-seropositive subjects who decided voluntarily to interrupt therapy after two or more years of successful HAART. The primary end-point was the time to patients being free of therapy before reaching a CD4+ cell count < or =350/microl. Fifteen of 62 patients remained in treatment interruption for more than 180 days. Patients restarting therapy had higher HIV-DNA levels (P = 0.05), were treated more frequently with NNRTI-drugs (P = 0.02), had a shorter period of HAART (P = 0.046), and lower CD4+ cell counts after day 14 of interruption of treatment (P = 0.04). Multivariate regression analysis showed that less than 323 baseline proviral HIV-DNA cp/10(6) PBMCs and more than 564 CD4 cells/microl at day 14 after interruption were associated independently with a reduced risk of restarting treatment (P = 0.041 and P = 0.012, respectively). A score based on CD4+ cell counts at nadir, at baseline, at week 2 of treatment interruption, and on baseline HIV-DNA values can identify patients with a prolonged period free safely of treatment.


Assuntos
Terapia Antirretroviral de Alta Atividade/métodos , Linfócitos T CD4-Positivos/imunologia , Infecções por HIV/tratamento farmacológico , Suspensão de Tratamento , Adulto , Contagem de Linfócito CD4 , DNA Viral/sangue , Feminino , Infecções por HIV/imunologia , Humanos , Masculino , Pessoa de Meia-Idade , Prognóstico , Estudos Prospectivos , Fatores de Tempo , Resultado do Tratamento
14.
Infez Med ; 16(4): 193-9, 2008 Dec.
Artigo em Italiano | MEDLINE | ID: mdl-19155683

RESUMO

The prognosis of HIV-infected patients has dramatically improved since the advent of HAART. The immune recovery associated with HAART may result in immuno-pathological reactions and clinical deterioration when HAART is initiated in patients with tuberculosis (TB). This phenomenon is defined as immune reconstitution inflammatory syndrome (IRIS). In this review, we summarise the epidemiology, clinical presentations and management of TB-associated IRIS.


Assuntos
Infecções Oportunistas Relacionadas com a AIDS/imunologia , Terapia Antirretroviral de Alta Atividade/efeitos adversos , Síndrome Inflamatória da Reconstituição Imune/etiologia , Tuberculose Pulmonar/imunologia , Infecções Oportunistas Relacionadas com a AIDS/diagnóstico , Infecções Oportunistas Relacionadas com a AIDS/tratamento farmacológico , Infecções Oportunistas Relacionadas com a AIDS/epidemiologia , Antituberculosos/uso terapêutico , Quimioterapia Combinada , Medicina Baseada em Evidências , Glucocorticoides/uso terapêutico , Humanos , Síndrome Inflamatória da Reconstituição Imune/induzido quimicamente , Síndrome Inflamatória da Reconstituição Imune/diagnóstico , Síndrome Inflamatória da Reconstituição Imune/imunologia , Síndrome Inflamatória da Reconstituição Imune/microbiologia , Incidência , Prevalência , Fatores de Risco , Cidade de Roma/epidemiologia , Resultado do Tratamento , Tuberculose Pulmonar/diagnóstico , Tuberculose Pulmonar/tratamento farmacológico , Tuberculose Pulmonar/epidemiologia
15.
Biologics ; 2(3): 577-81, 2008 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-19707388

RESUMO

AIM: To evaluate the impact of health-related quality of life (HRQoL) enfuvirtide-based (ENF-based) salvage regimens of treatment-experienced HIV patients, in an observational multicenter cohort study. METHODS: HRQoL was measured in a cohort of 16 patients over a 6-month follow-up using 2 instruments: the ISSQoL (Istituto Superiore di Sanità Quality of Life), a recently validated HIV-specific questionnaire; the EQ-5D (EuroQol), a generic widely used instrument. ENF was given at standard dosage along with an optimized background regimen. RESULTS: Most of HRQoL dimensions showed improvement in ENF-treated patients at the post-baseline time points. Social functioning was the only dimension showing a negative effect. Monthly care costs of antiretroviral drugs for HIV patients taking ENF plus an optimized background regimen were approximately euro2,348 per patient-month (range euro382-euro2,940). CONCLUSION: Our results show that the addition of ENF to an optimized background salvage-HAART may positively affect HRQoL not only in clinical trials but also in a sample population of patients used in a routine clinical practice.

16.
Int J Immunopathol Pharmacol ; 20(3): 473-85, 2007.
Artigo em Inglês | MEDLINE | ID: mdl-17880761

RESUMO

In some early-treated HIV-positive patients, Structured Treatment Interruption (STI) is associated to spontaneous control of viral rebound. Thus, in this clinical setting, we analyzed the immunological parameters associated to viral control. Two groups of early treated patients who underwent STI were retrospectively defined, according to the ability to spontaneously control HIV replication (Controller and Non-controller). Plasma cytokine levels were analyzed by multiplex analysis. CD8 T cell differentiation was determined by polychromatic flow cytometry. Antigen-specific IFN-gamma production was analyzed by ELISpot and intracellular staining after stimulation with HIV-peptides. Long-term Elispot assays were performed in the presence or absence of IL-15. Plasma IL-15 was found decreased over a period of time in Non-Controller patients, whereas a restricted response to Gag (aa.167-202 and 265-279) and Nef (aa.86-100 and 111-138) immunodominant epitopes was more frequently observed in Controller patients. Interestingly, in two Non-Controller patients the CD8-mediated T cells response to immunodominant epitopes could be restored in vitro by IL-15, suggesting a major role of cytokine homeostasis on the generation of protective immunity. In early-treated HIV+ patients undergoing STI, HIV replication control was associated to CD8 T cell maturation and sustained IL-15 levels, leading to HIV-specific CD8 T cell responses against selected Gag and Nef epitopes.


Assuntos
Fármacos Anti-HIV/uso terapêutico , Linfócitos T CD8-Positivos/efeitos dos fármacos , Epitopos/imunologia , Antígenos HIV/imunologia , Infecções por HIV , Interleucina-15/imunologia , Adulto , Fármacos Anti-HIV/administração & dosagem , Terapia Antirretroviral de Alta Atividade , Linfócitos T CD8-Positivos/imunologia , Epitopos/farmacologia , Antígenos HIV/farmacologia , Infecções por HIV/tratamento farmacológico , Infecções por HIV/imunologia , Infecções por HIV/virologia , HIV-1/efeitos dos fármacos , HIV-1/imunologia , HIV-1/fisiologia , Humanos , Memória Imunológica/efeitos dos fármacos , Interferon gama/imunologia , Interleucina-15/sangue , Interleucina-15/farmacologia , Leucócitos Mononucleares/efeitos dos fármacos , Leucócitos Mononucleares/imunologia , Masculino , Pessoa de Meia-Idade , Fragmentos de Peptídeos/imunologia , Fragmentos de Peptídeos/farmacologia , Proteínas Recombinantes/imunologia , Proteínas Recombinantes/farmacologia , Replicação Viral/efeitos dos fármacos , Produtos do Gene gag do Vírus da Imunodeficiência Humana/imunologia , Produtos do Gene gag do Vírus da Imunodeficiência Humana/farmacologia , Produtos do Gene nef do Vírus da Imunodeficiência Humana/imunologia , Produtos do Gene nef do Vírus da Imunodeficiência Humana/farmacologia
17.
J Med Virol ; 79(8): 1047-54, 2007 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-17597482

RESUMO

This study aimed to define clinical and virological parameters associated with spontaneous control of HIV replication in patients having initiated HAART during primary HIV infection, who underwent structured therapy interruption by two protocols with either fixed or HIV viremia-guided scheme. At the end of the protocol all patients were changed to viremia-guided scheme and observed for 12 months (follow-up). Patients maintaining HIV viremia below the indications for resumption of HAART during the follow-up, were defined controllers, those who had to resume HAART were defined non-controllers. The following parameters were examined: pre-interruption therapy duration, CD4(+), HIV RNA, proviral DNA, evolution of viral quasispecies. No specific advantage was conferred by either interruption of structured therapy in the proportion of controllers and non-controllers. Pre-HAART and zenith CD4(+), pre-therapy interruption, HAART duration, but not pre-HAART HIV RNA, were significantly higher in controllers as compared to non-controllers. HIV RNA levels after the first interruption cycle of therapy were significantly lower in controllers than in non-controllers. Proviral DNA levels were also lower in controllers at this time point. HIV RNA and proviral DNA levels associated with the last interruption of therapy cycle were not different from those associated with the first cycle, and, in spite of multiple waves of virus rebound, very few gag quasispecies variants emerged in each patient. The data suggest that pre-treatment clinical parameters and virological events associated with the first viral rebound are crucial factors in determining the ability to control viral replication after multiple cycles of interruption of treatment.


Assuntos
Fármacos Anti-HIV/administração & dosagem , Fármacos Anti-HIV/uso terapêutico , Infecções por HIV/tratamento farmacológico , Infecções por HIV/virologia , HIV-1/genética , Replicação Viral/efeitos dos fármacos , Adulto , Terapia Antirretroviral de Alta Atividade , DNA Viral , Esquema de Medicação , Humanos , Pessoa de Meia-Idade , Filogenia , RNA Viral , Carga Viral
18.
Eur J Clin Microbiol Infect Dis ; 26(3): 175-9, 2007 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-17318481

RESUMO

Imported malaria is the most common cause of fatal infections in returning travellers. The increased amount of both tourist movement and migration has resulted in a growing number of people at risk of infection. In the present study, 507 malaria patients admitted to Italy's National Institute for Infectious Diseases in Rome between January 1984 and December 2003 were studied. Overall, 445 cases, or 87.7%, were acquired in Africa, of which 55% were acquired in five sub-Saharan countries. Plasmodium falciparum accounted for 393 (77.5%) of the imported cases. Patients consisted of short-term travellers (n = 213, 42%), long-term visitors (n = 134, 26.4%), and immigrants from endemic areas (n = 137, 27%). Malaria chemoprophylaxis was completed in less than one-quarter of all patients, with immigrants having the lowest rate of completion: only 3.6% of immigrants fully completed chemoprophylaxis compared to 31% of short-term travellers and 29.1% of long-term visitors (p < 0.001). Upon multivariate analysis, the lack of chemoprophylaxis was independently associated with the occurrence of severe malaria (p = 0.009). Severe malaria was reported in 59 (11.6%) individuals: all 11 deaths due to severe P. falciparum infection occurred in patients from sub-Saharan countries, two of whom were immigrants from countries where malaria is endemic. Malaria poses a serious health threat to individuals visiting endemic areas. Ensuring the correct chemoprophylaxis for all travellers, including immigrants from endemic areas, and providing prompt access to healthcare providers for unhealthy returning travellers are major points still to be addressed in Italy.


Assuntos
Malária/epidemiologia , Plasmodium/classificação , Viagem , Adolescente , Adulto , Animais , Quimioprevenção , Feminino , Humanos , Itália/epidemiologia , Malária/diagnóstico , Malária/parasitologia , Malária/prevenção & controle , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos
19.
Acta Radiol ; 47(8): 793-7, 2006 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-17050357

RESUMO

PURPOSE: To evaluate whether highly active antiretroviral therapy (HAART) modifies radiographic appearances of Pseudomonas aeruginosa bronchopulmonary infection in HIV-infected patients. P. aeruginosa is increasingly reported as a respiratory pathogen in HIV+ patients with very low levels of CD4 lymphocytes. Few studies have analyzed the radiological presentation of bronchopulmonary disease that occurs in HAART-treated patients. MATERIAL AND METHODS: We retrospectively reviewed the chest radiographs of 46 HIV-infected patients with bronchopulmonary diseases in which P. aeruginosa was the sole respiratory pathogen that was isolated. All cases were community-acquired infection. Twenty-four of the patients were on HAART treatment, and 22 were not. Chest radiographs were assessed for the presence and distribution of parenchymal consolidation, reticular or reticulonodular infiltrates, bronchial wall thickening, ground-glass opacities, cavitation, pleural effusion, and adenopathies. Statistical analysis was done using Epi-Info version 6 (CDC, Atlanta, GA, USA). RESULTS: Normal chest radiographs were observed in 11 patients. Eight of these 11 (73%) were receiving HAART, and 3/11 (27%) were not. The most common radiographic abnormality was bronchopneumonia, present in 24 of 46 patients (52%): in 10 of 24 (42%) patients with HAART and 14 of 22 (64%) without. Cavitation was seen in 1 of 24 (4%) patients with HAART and in 5 of 22 (23%) without HAART. CONCLUSION: Cavitation was more frequent in patients that were not receiving HAART, and normal chest radiographs were more frequently seen in patients on HAART.


Assuntos
Terapia Antirretroviral de Alta Atividade , Infecções por HIV/tratamento farmacológico , Pneumopatias/diagnóstico por imagem , Infecções por Pseudomonas/diagnóstico por imagem , Adulto , Feminino , Infecções por HIV/complicações , Humanos , Masculino , Pessoa de Meia-Idade , Radiografia , Estudos Retrospectivos
20.
HIV Med ; 7(5): 338-44, 2006 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-16945080

RESUMO

OBJECTIVE: To assess the incidence and consequences of adverse reactions among African HIV-positive pregnant women treated with fixed-dose combinations of a nevirapine-containing antiretroviral (ARV) triple therapy. METHODS: A retrospective analysis of the clinical files of 703 HIV-1-positive pregnant women treated with a nevirapine-containing regimen between May 2002 and July 2004 was conducted. Selection criteria for inclusion in the analysis were: (a) taking ARV for more than 14 days; (b) baseline values of transaminases below the threshold of 2.5 times the upper limit of normal (ULN). The women were on a nevirapine-containing regimen for a median of 127 days [interquartile range (IQR) 86-190 days], starting on average at the 27th week of gestation (standard deviation+/-9.5) and continuing up to a maximum of 6 months after delivery. All women were offered formula milk to feed the babies. Highly active antiretroviral therapy (HAART) was continued beyond 6 months only if the patient qualified on the first visit. The main outcome measures were incidence of hepatotoxicity, skin rashes and Stevens-Johnson syndrome. Multivariate analysis to assess the impact of several factors on the adverse reaction rate was performed. RESULTS: As of 1 August 2004, 554 pregnancies reached term, 96 women were still pregnant, and 53 women dropped out of the programme before giving birth. After 2 months of therapy the percentage of patients with a viral load less than 1000 HIV-1 RNA copies/mL increased to 78.6%; average CD4 cell counts increased from 490 cells/microL before therapy to 630 after therapy. The incidence of grade 3-4 adverse reactions (hepatotoxicity, skin rashes and Stevens-Johnson syndrome) was 6.5, 2.4 and 1.1%, respectively. Five women died during pregnancy (0.88%). Only one of the deaths could be associated with ARV treatment. CONCLUSION: Nevirapine-containing regimens in pregnant woman, at all CD4 cell count levels, appear to be safe in African settings.


Assuntos
Infecções por HIV/prevenção & controle , HIV-1/efeitos dos fármacos , Transmissão Vertical de Doenças Infecciosas/prevenção & controle , Nevirapina/efeitos adversos , Complicações Infecciosas na Gravidez/prevenção & controle , Inibidores da Transcriptase Reversa/efeitos adversos , Adulto , Terapia Antirretroviral de Alta Atividade , População Negra , Contagem de Linfócito CD4 , Estudos de Coortes , Feminino , Infecções por HIV/tratamento farmacológico , Infecções por HIV/transmissão , Humanos , Incidência , Moçambique , Gravidez , Complicações Infecciosas na Gravidez/tratamento farmacológico , Estudos Retrospectivos , Resultado do Tratamento
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