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2.
N Engl J Med ; 363(21): 2004-14, 2010 Nov 18.
Artículo en Inglés | MEDLINE | ID: mdl-21083386

RESUMEN

BACKGROUND: The outcomes of kidney transplantation and immunosuppression in people infected with human immunodeficiency virus (HIV) are incompletely understood. METHODS: We undertook a prospective, nonrandomized trial of kidney transplantation in HIV-infected candidates who had CD4+ T-cell counts of at least 200 per cubic millimeter and undetectable plasma HIV type 1 (HIV-1) RNA levels while being treated with a stable antiretroviral regimen. Post-transplantation management was provided in accordance with study protocols that defined prophylaxis against opportunistic infection, indications for biopsy, and acceptable approaches to immunosuppression, management of rejection, and antiretroviral therapy. RESULTS: Between November 2003 and June 2009, a total of 150 patients underwent kidney transplantation; survivors were followed for a median period of 1.7 years. Patient survival rates (±SD) at 1 year and 3 years were 94.6±2.0% and 88.2±3.8%, respectively, and the corresponding mean graft-survival rates were 90.4% and 73.7%. In general, these rates fall somewhere between those reported in the national database for older kidney-transplant recipients (≥65 years) and those reported for all kidney-transplant recipients. A multivariate proportional-hazards analysis showed that the risk of graft loss was increased among patients treated for rejection (hazard ratio, 2.8; 95% confidence interval [CI], 1.2 to 6.6; P=0.02) and those receiving antithymocyte globulin induction therapy (hazard ratio, 2.5; 95% CI, 1.1 to 5.6; P=0.03); living-donor transplants were protective (hazard ratio, 0.2; 95% CI, 0.04 to 0.8; P=0.02). A higher-than-expected rejection rate was observed, with 1-year and 3-year estimates of 31% (95% CI, 24 to 40) and 41% (95% CI, 32 to 52), respectively. HIV infection remained well controlled, with stable CD4+ T-cell counts and few HIV-associated complications. CONCLUSIONS: In this cohort of carefully selected HIV-infected patients, both patient- and graft-survival rates were high at 1 and 3 years, with no increases in complications associated with HIV infection. The unexpectedly high rejection rates are of serious concern and indicate the need for better immunotherapy. (Funded by the National Institute of Allergy and Infectious Diseases; ClinicalTrials.gov number, NCT00074386.).


Asunto(s)
Infecciones por VIH/complicaciones , Terapia de Inmunosupresión , Fallo Renal Crónico/cirugía , Trasplante de Riñón , Infecciones Oportunistas Relacionadas con el SIDA/prevención & control , Adulto , Recuento de Linfocito CD4 , Quimioprevención , Femenino , Estudios de Seguimiento , Rechazo de Injerto/epidemiología , Supervivencia de Injerto , Infecciones por VIH/inmunología , Humanos , Inmunosupresores/uso terapéutico , Estimación de Kaplan-Meier , Fallo Renal Crónico/etiología , Trasplante de Riñón/inmunología , Trasplante de Riñón/mortalidad , Masculino , Persona de Mediana Edad , Análisis Multivariante , Infecciones Oportunistas , Modelos de Riesgos Proporcionales , Trasplante Homólogo
3.
Liver Transpl ; 18(6): 716-26, 2012 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-22328294

RESUMEN

Hepatitis C virus (HCV) is a controversial indication for liver transplantation (LT) in human immunodeficiency virus (HIV)-infected patients because of reportedly poor outcomes. This prospective, multicenter US cohort study compared patient and graft survival for 89 HCV/HIV-coinfected patients and 2 control groups: 235 HCV-monoinfected LT controls and all US transplant recipients who were 65 years old or older. The 3-year patient and graft survival rates were 60% [95% confidence interval (CI) = 47%-71%] and 53% (95% CI = 40%-64%) for the HCV/HIV patients and 79% (95% CI = 72%-84%) and 74% (95% CI = 66%-79%) for the HCV-infected recipients (P < 0.001 for both), and HIV infection was the only factor significantly associated with reduced patient and graft survival. Among the HCV/HIV patients, older donor age [hazard ratio (HR) = 1.3 per decade], combined kidney-liver transplantation (HR = 3.8), an anti-HCV-positive donor (HR = 2.5), and a body mass index < 21 kg/m(2) (HR = 3.2) were independent predictors of graft loss. For the patients without the last 3 factors, the patient and graft survival rates were similar to those for US LT recipients. The 3-year incidence of treated acute rejection was 1.6-fold higher for the HCV/HIV patients versus the HCV patients (39% versus 24%, log rank P = 0.02), but the cumulative rates of severe HCV disease at 3 years were not significantly different (29% versus 23%, P = 0.21). In conclusion, patient and graft survival rates are lower for HCV/HIV-coinfected LT patients versus HCV-monoinfected LT patients. Importantly, the rates of treated acute rejection (but not the rates of HCV disease severity) are significantly higher for HCV/HIV-coinfected recipients versus HCV-infected recipients. Our results indicate that HCV per se is not a contraindication to LT in HIV patients, but recipient and donor selection and the management of acute rejection strongly influence outcomes.


Asunto(s)
Coinfección/mortalidad , Rechazo de Injerto/mortalidad , Supervivencia de Injerto , Infecciones por VIH/mortalidad , Hepatitis C Crónica/mortalidad , Trasplante de Hígado/mortalidad , Abdomen Agudo , Adulto , Femenino , Estudios de Seguimiento , Humanos , Incidencia , Trasplante de Riñón/mortalidad , Masculino , Persona de Mediana Edad , Complicaciones Posoperatorias/mortalidad , Estudios Prospectivos , Factores de Riesgo , Análisis de Supervivencia , Resultado del Tratamiento , Estados Unidos/epidemiología
5.
AIDS Behav ; 16(4): 990-8, 2012 May.
Artículo en Inglés | MEDLINE | ID: mdl-21301949

RESUMEN

We describe 131 South African sexual assault survivors offered HIV post-exposure prophylaxis (PEP). While the median days completed was 27 (IQR 27, 28), 34% stopped PEP or missed doses. Controlling for baseline symptoms, PEP was not associated with symptoms (OR = 1.30, 95% CI = 0.66, 2.64). Factors associated with unprotected sex included prior unprotected sex (OR = 6.46, 95% CI = 3.04, 13.74), time since the assault (OR = 1.33, 95% CI = 1.12, 1.57) and age (OR = 1.30, 95% CI = 1.08, 1.57). Trauma counseling was protective (OR = 0.18, 95% CI = 0.05, 0.58). Four instances of seroconversion were observed by 6 months (risk = 3.7%, 95% CI = 1.0, 9.1). Proactive follow-up is necessary to increase the likelihood of PEP completion and address the mental health and HIV risk needs of survivors. Adherence interventions and targeted risk reduction counseling should be provided to minimize HIV acquisition.


Asunto(s)
Fármacos Anti-VIH/administración & dosificación , Infecciones por VIH/prevención & control , Cumplimiento de la Medicación/estadística & datos numéricos , Profilaxis Posexposición , Violación , Sobrevivientes/estadística & datos numéricos , Adolescente , Consejo , Femenino , Estudios de Seguimiento , Guías como Asunto , Infecciones por VIH/epidemiología , Infecciones por VIH/psicología , Humanos , Masculino , Factores de Riesgo , Sudáfrica/epidemiología , Factores de Tiempo , Sexo Inseguro , Adulto Joven
6.
Clin Infect Dis ; 53(1): 76-83, 2011 Jul 01.
Artículo en Inglés | MEDLINE | ID: mdl-21653307

RESUMEN

BACKGROUND: The National HIV/AIDS Strategy proposes to scale-up post-exposure prophylaxis (PEP). Intensive risk reduction and adherence counseling appear to be effective but are resource intensive. Identifying simpler interventions that maximize the HIV prevention potential of PEP is critical. METHODS: A randomized noninferiority study comparing 2 (standard) or 5 (enhanced) risk reduction counseling sessions was performed. Adherence counseling was provided in the enhanced arm. We measured changes in unprotected sexual intercourse acts at 12 months, compared with baseline; HIV acquisition; and PEP adherence. Outcomes were stratified by degree of baseline risk. RESULTS: We enrolled 457 individuals reporting unprotected intercourse within 72 h with an HIV-infected or at-risk partner. Participants were 96% male and 71% white. There were 1.8 and 2.3 fewer unprotected sex acts in the standard and enhanced groups. The maximum potential risk difference, reflected by the upper bound of the 95% confidence interval, was 3.9 acts. The difference in the riskier subset may have been as many as 19.6 acts. The incidence of HIV seroconversion was 2.9% and 2.6% among persons randomized to standard and enhanced counseling, respectively, with a maximum potential difference of 3.4%. The absolute and maximal HIV seroconversion incidence was 9.9% and 20.4% greater in the riskier group randomized to standard, compared with enhanced, counseling. Adherence outcomes were similar, with noninferiority in the lower risk group and concerning differences among the higher-risk group. CONCLUSIONS: Risk assessment is critical at PEP initiation. Standard counseling is only noninferior for individuals with lower baseline risk; thus, enhanced counseling should be targeted to individuals at higher risk.


Asunto(s)
Consejo Dirigido/métodos , Infecciones por VIH/prevención & control , Infecciones por VIH/terapia , Cooperación del Paciente , Profilaxis Posexposición/métodos , Sexo Inseguro , Adulto , Femenino , Infecciones por VIH/psicología , Humanos , Masculino , Conducta de Reducción del Riesgo
7.
South Afr J HIV Med ; 20(1): 899, 2019.
Artículo en Inglés | MEDLINE | ID: mdl-31308965

RESUMEN

BACKGROUND: Adolescents and young adults account for more than one-third of incident Human Immunodeficiency Virus (HIV) infections globally. Understanding sexual practices of this high-risk group is critical in designing HIV targeted prevention programming. OBJECTIVES: To describe self-reported risky sexual practices of adolescents and young adults aged 16-24 years from 30 Botswana communities. METHODS: Cross-sectional, self-reported age at sexual debut; number of sexual partners; condom and alcohol use during sex; intergenerational sex; and transactional sex data were collected. Modified Poisson estimating equations were used to obtain univariate and multivariate-adjusted prevalence ratios (PR) and 95% confidence intervals (CI) comparing engagement in different sexual practices according to gender, accounting for the clustered design of the study. RESULTS: Among the 3380 participants, 2311 reported being sexually active with more females reporting being sexually active compared to males (65% vs. 35%, respectively; p < 0.0001). In univariate analyses, female participants were more likely to report inconsistent condom use (PR 1.61; 95% CI 1.44-1.80), intergenerational sex (PR 9.00; 95% CI 5.84-13.88) and transactional sex (PR 3.46; 95% CI 2.07-5.77) than males, yet less likely to report engaging in sex before age 15 years (PR 0.59; 95% CI: 0.41-0.85), using alcohol around the time of intercourse (PR: 0.59; 95% CI 0.45-0.76) or having ≥ two partners in the last 12 months (PR 0.65; 95% CI 0.57-0.74). CONCLUSIONS: Self-reported risky sexual practices of adolescents and young adults in Botswana differed significantly between males and females. Gender-specific risky sexual practices highlight the importance of developing tailored HIV prevention programming.

8.
Transplantation ; 84(5): 563-71, 2007 Sep 15.
Artículo en Inglés | MEDLINE | ID: mdl-17876267

RESUMEN

The transplant community has been slow to recognize the efficacy of highly active antiretroviral therapy in changing the course of human immunodeficiency virus (HIV) infection to a chronic condition. People infected with HIV are dying less often from progression of HIV to acquired immune deficiency syndrome. Unfortunately, there is an increasing rate of morbidity and mortality from comorbidities resulting in end-stage liver and kidney disease, prompting some transplant centers to eliminate HIV infection as a contraindication to transplantation. This overview will describe the evolving clinical strategies that have resulted in good outcomes after solid organ transplantation in the HIV-positive recipient.


Asunto(s)
Seropositividad para VIH/complicaciones , Seropositividad para VIH/inmunología , Trasplante de Órganos , Profilaxis Antibiótica , Terapia Antirretroviral Altamente Activa , Virus de Hepatitis/efectos de los fármacos , Humanos , Inmunosupresores/efectos adversos , Inmunosupresores/uso terapéutico , Factores de Tiempo , Resultado del Tratamiento
9.
AIDS Read ; 16(12): 664-8, 675-8, 2006 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-17195325

RESUMEN

Advances in HIV management make it difficult to deny solid organ transplantation to HIV-infected patients based on futility arguments. Preliminary studies suggest that both patient and graft survival are similar in HIV-negative and HIV-positive transplant recipients. While there has been no significant HIV disease progression, substantial interactions between immunosuppressants and antiretroviral drugs necessitate careful monitoring. The evaluation and management of HIV-infected transplant candidates and recipients require excellent communication among a multidisciplinary team, the primary HIV care provider, and the patient. Timely referral for transplant evaluation will prevent unnecessary mortality during the pre-transplant evaluation process.


Asunto(s)
Infecciones por VIH , Trasplante de Órganos , Selección de Paciente , Humanos , Pronóstico , Derivación y Consulta
10.
AIDS ; 30(3): 435-44, 2016 Jan 28.
Artículo en Inglés | MEDLINE | ID: mdl-26765937

RESUMEN

OBJECTIVES: To evaluate the impact of liver and kidney transplantation on survival in HIV-positive transplant candidates and compare outcomes between HIV-positive and negative recipients. DESIGN: Observational cohort of HIV-positive transplant candidates and recipients and secondary analysis comparing study recipients to HIV-negative national registry controls. METHODS: We fit proportional hazards models to assess transplantation impact on mortality among recipients and candidates. We compared time to graft failure and death with HIV-negative controls in unmatched, demographic-matched, and risk-adjusted models. RESULTS: There were 17 (11.3%) and 46 (36.8%) deaths among kidney and liver recipients during a median follow-up of 4.0 and 3.5 years, respectively. Transplantation was associated with survival benefit for HIV-infected liver recipients with model for end-stage liver disease (MELD) greater than or equal 15 [hazard ratio (HR) 0.1; 95% confidence interval (CI) 0.05, 0.01; P < 0.0001], but not for MELD less than 15 (HR 0.7; 95% CI 0.3, 1.8; P = 0.43) or for kidney recipients (HR 0.6; 95% CI 0.3, 1.4; P = 0.23). In HIV-positive kidney recipients, unmatched and risk-matched analyses indicated a marginally significant HR for graft loss [1.3 (P = 0.07) and HR 1.4 (P = 0.052)]; no significant increase in risk of death was observed. All models demonstrated a higher relative hazard of graft loss or death in HIV-positive liver recipients; the absolute difference in the proportion of deaths was 6.7% in the risk-matched analysis. CONCLUSION: Kidney transplantation should be standard of care for well managed HIV-positive patients. Liver transplant in candidates with high MELD confers survival benefit; transplant is a viable option in selected candidates. The increased mortality risk compared with HIV-negative recipients was modest. TRIAL REGISTRATION: ClinicalTrials.Gov; NCT00074386; http://clinicaltrials.gov/.


Asunto(s)
Infecciones por VIH/mortalidad , Receptores de Trasplantes , Adulto , Estudios de Cohortes , Femenino , Humanos , Trasplante de Riñón , Trasplante de Hígado , Masculino , Persona de Mediana Edad , Análisis de Supervivencia , Insuficiencia del Tratamiento
11.
Clin Infect Dis ; 41(10): 1507-13, 2005 Nov 15.
Artículo en Inglés | MEDLINE | ID: mdl-16231265

RESUMEN

BACKGROUND: The efficacy of antiretroviral postexposure prophylaxis (PEP) against infection with human immunodeficiency virus (HIV) following occupational exposures has prompted the use of PEP after nonoccupational exposures. There are, however, important differences between occupational and nonoccupational exposures, and the effectiveness of PEP following nonoccupational exposure is unknown. We sought to describe the occurrence and circumstances of HIV seroconversion following nonoccupational PEP. METHODS: HIV uninfected individuals reporting potential sexual or injection drug use exposures to HIV in the preceding 72 h received a 28-day regimen of antiretroviral therapy and counseling in a nonrandomized trial. The level of HIV antibody was measured 12 weeks after PEP initiation. RESULTS: Of 877 exposed subjects, 702 were evaluable 12 weeks after exposure. Seroconversion was detected in 7 subjects (1%; 95% confidence interval, 0.4%-2%). Three seroconverters reported having no exposures after PEP initiation and, thus, probably represent evidence of chemoprophylactic failure. In the other 4 subjects, additional exposures to HIV after PEP initiation or detection of HIV RNA in plasma specimens obtained at baseline precluded determination of the source of seroconversion. No exposure source was available to assess genetic concordance with the seroconverter's virus. CONCLUSIONS: As for occupational exposure, PEP is not completely effective in preventing HIV infection following nonoccupational exposure. Therefore, primary prevention remains essential. In contrast to the occupational setting, the potential source of exposure is rarely available for testing in the nonoccupational setting, and exposures are often not isolated. Thus, it is often impossible to determine whether seroconversion resulted from failure of PEP or from other exposures, posing difficulties for future comparative studies seeking to evaluate the effectiveness of PEP.


Asunto(s)
Fármacos Anti-VIH/administración & dosificación , Fármacos Anti-VIH/uso terapéutico , Infecciones por VIH/prevención & control , Seropositividad para VIH , Consejo , Femenino , Anticuerpos Anti-VIH/sangre , Infecciones por VIH/etiología , Educación en Salud , Humanos , Masculino , Compartición de Agujas/efectos adversos , Asunción de Riesgos , Conducta Sexual , Abuso de Sustancias por Vía Intravenosa/complicaciones
12.
Transplantation ; 80(1): 13-7, 2005 Jul 15.
Artículo en Inglés | MEDLINE | ID: mdl-16003227

RESUMEN

BACKGROUND: With advances in antiretroviral therapy, many human immunodeficiency virus (HIV)-infected individuals are living longer and developing end-stage renal or hepatic disease requiring transplantation. Maintaining the viability of the transplant and suppressing HIV replication requires concomitant use of immunosuppressants (e.g., cyclosporine) and antiretrovirals (e.g., protease inhibitors or nonnucleoside reverse transcriptase inhibitors), which leads to drug interactions. To assist in appropriate clinical management of HIV-infected transplant recipients, the authors describe the pharmacokinetic interactions between cyclosporine and the antiretroviral medications, and required modifications of cyclosporine dosing. METHODS: Eighteen HIV-infected subjects with end-stage kidney or liver disease underwent transplantation. Subjects had pharmacokinetic studies before transplantation and for up to 2 years posttransplantation (at weeks 2-4, 12, 28, 52, and 104). Protease inhibitors, nonnucleoside reverse transcriptase inhibitors, and cyclosporine concentrations were measured by liquid chromatography-mass spectrometry in plasma and whole blood, respectively. RESULTS: Subjects using protease inhibitors and cyclosporine had a threefold increase in cyclosporine area under the curve (4,190+/-2,180-11,900+/-1,600 ng*hr/mL, P<0.01), necessitating an 85% reduction in cyclosporine dose over a 2-year period (1.3+/-1.5-0.2+/-0.0 mg/kg/dose), leading to a progressive increase in oral cyclosporine bioavailability (R=0.92, P<0.02). Subjects on nonnucleoside reverse-transcriptase inhibitors showed minimal interactions with cyclosporine, and subjects on both HIV treatments had intermediate responses. CONCLUSIONS: HIV-infected transplant recipients on protease inhibitors require markedly lower doses of cyclosporine, with continued lowering of the cyclosporine dose over time and ongoing cyclosporine trough monitoring because of progressively increasing cyclosporine bioavailability. Medication changes must be carefully managed to avoid insufficient immunosuppression or toxicity resulting from drug interactions.


Asunto(s)
Ciclosporina/farmacocinética , Ciclosporina/uso terapéutico , Infecciones por VIH/complicaciones , Trasplante de Riñón/inmunología , Trasplante de Hígado/inmunología , Adolescente , Adulto , Fármacos Anti-VIH/farmacocinética , Fármacos Anti-VIH/uso terapéutico , Femenino , Infecciones por VIH/inmunología , Humanos , Inmunosupresores/farmacocinética , Inmunosupresores/uso terapéutico , Fallo Renal Crónico/complicaciones , Fallo Renal Crónico/cirugía , Masculino , Persona de Mediana Edad , Insuficiencia del Tratamiento , Resultado del Tratamiento
13.
Arch Intern Med ; 164(1): 46-54, 2004 Jan 12.
Artículo en Inglés | MEDLINE | ID: mdl-14718321

RESUMEN

BACKGROUND: The cost-effectiveness of interventions that provide human immunodeficiency virus (HIV) postexposure prophylaxis (PEP) to individuals after sexual or injection-drug use exposures depends on the distribution of exposure routes, prevalence of infection among source partners, adherence to PEP regimens, medical care costs, and prevailing epidemiologic contexts, among other factors. OBJECTIVE: To determine the cost-effectiveness of a comprehensive program to prevent HIV infection after sexual or injection-drug use exposure for 401 persons seeking PEP in an urban community. METHODS: We conducted a retrospective cost analysis to evaluate the cost of the PEP intervention, then combined this information with model-based effectiveness estimates to determine the PEP program's "cost-utility ratio," which is the ratio of net program costs to the total number of quality-adjusted life-years (QALYs) saved by the program. RESULTS: The average cost of the PEP regimen was $1222, and the total cost of the program was $450 970. The PEP program prevented an estimated 1.26 HIV infections, saved 11.74 QALYs, and averted $281 323 in future HIV-related medical care costs. The overall cost-utility ratio was $14 449 per QALY saved. When analysis was restricted to men reporting receptive anal intercourse, the savings in averted HIV-related medical care costs exceeded the cost of the program. The results were generally robust to changes in key parameter values but were sensitive to assumptions about the HIV transmission probability for receptive anal intercourse. CONCLUSIONS: For this study population, HIV PEP was cost-effective by conventional standards and cost-saving for persons seeking PEP after male-male receptive anal intercourse.


Asunto(s)
Fármacos Anti-VIH/economía , Infecciones por VIH/economía , Infecciones por VIH/prevención & control , Compartición de Agujas/efectos adversos , Conducta Sexual , Fármacos Anti-VIH/uso terapéutico , Análisis Costo-Beneficio , Interpretación Estadística de Datos , Quimioterapia Combinada , Femenino , Infecciones por VIH/transmisión , Humanos , Masculino , Años de Vida Ajustados por Calidad de Vida , Estudios Retrospectivos , Estados Unidos , Población Urbana
14.
AIDS ; 18(15): 2065-73, 2004 Oct 21.
Artículo en Inglés | MEDLINE | ID: mdl-15577628

RESUMEN

OBJECTIVES: To evaluate the cost-effectiveness of HIV postexposure prophylaxis (PEP) following sexual or injection-related exposures in 96 metropolitan statistical areas in the United States (MSA). DESIGN: Empirical, model-based cost-effectiveness analysis. METHODS: Epidemiological and population size estimates from the literature were combined with information about the distribution of exposure types, PEP completion rate, proportion of source partners known to be HIV infected, and PEP program costs obtained from a feasibility study of PEP in San Francisco to estimate the cost-effectiveness of hypothetical PEP programs in each of the 96 MSA. The effectiveness of combination antiretroviral therapy following sexual or drug use-related exposures, which is presently not known, was assumed equal to the effectiveness of zidovudine monotherapy in the occupational setting. The main outcome measure was the cost-utility ratio, defined as the cost per quality-adjusted life year (QALY) saved by the PEP intervention. RESULTS: The cost-utility ratios for the 96 MSA ranged from 4137 dollars to 39,101 dollars per QALY saved; only two of the ratios exceeded 30,000 dollars per QALY saved. Combined across the 96 MSA, the hypothetical PEP programs would reach nearly 20,000 clients at a total cost of approximately 22 million dollars. The overall cost-utility ratio across MSA was 12,567 dollars per QALY saved. The majority of the HIV infections prevented by PEP were among men and women who reported receptive anal intercourse exposure. CONCLUSIONS: PEP following sexual or drug use-related exposures could be a cost-effective complement to existing HIV-prevention efforts in most MSA across the United States.


Asunto(s)
Quimioprevención/economía , Infecciones por VIH/prevención & control , Servicios Preventivos de Salud/economía , Análisis Costo-Beneficio , Femenino , Infecciones por VIH/economía , Heterosexualidad , Homosexualidad Masculina , Humanos , Masculino , Años de Vida Ajustados por Calidad de Vida , Abuso de Sustancias por Vía Intravenosa/economía , Abuso de Sustancias por Vía Intravenosa/virología , Estados Unidos , Sexo Inseguro , Salud Urbana
15.
AIDS ; 18(5): 787-92, 2004 Mar 26.
Artículo en Inglés | MEDLINE | ID: mdl-15075514

RESUMEN

BACKGROUND: The effectiveness of postexposure prophylaxis (PEP) following occupational exposure to HIV has prompted advocacy for PEP following sexual or drug-use exposures. OBJECTIVE: To evaluate the concern that the availability of PEP for sexual or drug-use exposures might result in behavioral disinhibition. DESIGN: Non-randomized trial of 397 adults with high-risk sexual or drug-use exposures within the prior 72 h. INTERVENTIONS: Antiretroviral medication for 4 weeks and five counseling sessions. MAIN OUTCOME MEASUREMENTS: Participants were followed for 12 months for repeat request for PEP and for changes compared with pre-enrollment in overall high-risk behavior and the acquisition of sexually transmitted diseases (STD) and HIV. RESULTS: After 12 months following receipt of PEP, the majority of participants (83%) did not request a repeat course of PEP. At 12 months after exposure, 73% of participants reported a decrease compared with baseline in the number of times they had performed high-risk sexual acts; 13% reported no change, and 14% had an increase. Most participants (85%) had no change in the incidence of STD; 8.5% had a decrease and 6.8% an increase. Three homosexual men seroconverted for HIV (none associated with the presenting exposure) for a rate of 1.2/100 person-year, equivalent to rates in San Francisco among all homosexual men. CONCLUSIONS: After receipt of PEP consisting of antiretroviral medication and behavioral counseling following a potential sexual exposure to HIV, most individuals do not increase high-risk behavior. Coupled with prior safety and feasibility data, this lack of behavioral disinhibition suggests that use of PEP should be routinely considered following high-risk sexual exposures.


Asunto(s)
Fármacos Anti-VIH/uso terapéutico , Infecciones por VIH/prevención & control , Infecciones por VIH/psicología , Asunción de Riesgos , Conducta Sexual , Adulto , Femenino , Estudios de Seguimiento , Infecciones por VIH/transmisión , Humanos , Masculino , Enfermedades de Transmisión Sexual/transmisión
16.
Top HIV Med ; 12(3): 73-6, 2004.
Artículo en Inglés | MEDLINE | ID: mdl-15310937

RESUMEN

Improvements in antiretroviral therapy, opportunistic infection prophylaxis, and antirejection treatment have made solid-organ transplantation a potential option for HIV-infected patients. Preliminary experience in a small group of kidney and liver transplant recipients suggests that CD4+ cell counts and plasma HIV RNA level suppression can be maintained. As few opportunistic infections have been seen, as history of some opportunistic infection conditions may not be a contraindication to transplantation; this question is under investigation. Kidney graft rejection rates graft-survival rates appear to be similar to those in HIV-uninfected populations. A large multicenter study of the safety and efficacy of kidney and liver transplantation in HIV-infected patients is under way. Findings from this study should help to provide guidance in achieving optimal outcomes in this population. This article summarizes a presentation by Michelle E. Roland, MD, at the February and April 2004 International AIDS Society-USA courses in Atlanta, Los Angeles, and Chicago.


Asunto(s)
Terapia Antirretroviral Altamente Activa/métodos , Infecciones por VIH/tratamiento farmacológico , Huésped Inmunocomprometido , Trasplante de Riñón/inmunología , Trasplante de Hígado/inmunología , Femenino , Rechazo de Injerto , Supervivencia de Injerto , Infecciones por VIH/inmunología , Infecciones por VIH/mortalidad , Humanos , Trasplante de Riñón/métodos , Trasplante de Hígado/métodos , Masculino , Pronóstico , Medición de Riesgo , Análisis de Supervivencia , Inmunología del Trasplante/fisiología , Resultado del Tratamiento
17.
Transplantation ; 76(2): 370-5, 2003 Jul 27.
Artículo en Inglés | MEDLINE | ID: mdl-12883195

RESUMEN

BACKGROUND: Human immunodeficiency virus (HIV)-infected patients have historically been excluded from consideration for transplantation out of concern for the effects of immunosuppression on the progression of HIV disease. Improvements in HIV-related morbidity and mortality with the use of highly active antiretroviral therapy (HAART) have prompted a reevaluation of transplantation as a treatment option for HIV-infected patients with end-stage kidney and liver disease. METHODS: Eligible patients met standard transplant criteria. They had undetectable plasma HIV-1 RNA levels (viral load) for 3 months (kidney) or were predicted to achieve viral load suppression posttransplantation if unable to tolerate HAART (liver); a CD4+ T-cell count of more than 200 cells/microL (kidney) or more than 100 cells/microL (liver) for 6 months; and no history of opportunistic infections and neoplasm. Standard immunosuppression included prednisone, mycophenolate mofetil (CellCept, Roche Pharmaceuticals, Basel, Switzerland), and cyclosporine (Neoral, Novartis, East Hanover, NJ). RESULTS: Fourteen patients received transplants (10 kidney transplants, mean follow-up 480 days; four liver transplants, mean follow-up 380 days). All of the kidney transplant recipients (100%) are alive and with functioning grafts, and three of four liver transplant patients (75%) are alive and well with functioning grafts (all liver transplant patients with normal liver function tests). The one death occurred 445 days posttransplantation in a liver recipient coinfected with hepatitis C virus, who died as the result of its rapid reoccurrence. Rejection occurred in 5 of 10 kidney transplant recipients but did not occur in any of the four liver transplant recipients. HIV viral loads have remained undetectable in all patients maintained with HAART. CD4 counts have remained stable in patients not treated for rejection. Patients receiving protease inhibitors require 25% of the dose of cyclosporine compared with patients receiving nonnucleoside reverse transcriptase inhibitors. CONCLUSIONS: There has been no evidence of significant HIV progression and no adverse effect of HIV on allograft function. Rejection is a concern in kidney transplant recipients, as is the possible poor outcome in hepatitis C virus-coinfected liver transplant recipients. Preliminary data are encouraging and indicate that transplantation should be a treatment option for individuals with well-controlled HIV disease.


Asunto(s)
Infecciones por VIH/mortalidad , Fallo Renal Crónico/cirugía , Trasplante de Riñón , Fallo Hepático/cirugía , Trasplante de Hígado , Adulto , Fármacos Anti-VIH/farmacocinética , Terapia Antirretroviral Altamente Activa , Contraindicaciones , Interacciones Farmacológicas , Femenino , Supervivencia de Injerto , Infecciones por VIH/tratamiento farmacológico , Humanos , Terapia de Inmunosupresión , Inmunosupresores/farmacocinética , Fallo Renal Crónico/complicaciones , Fallo Renal Crónico/virología , Fallo Hepático/complicaciones , Fallo Hepático/virología , Masculino , Persona de Mediana Edad , Proyectos Piloto
18.
AIDS Patient Care STDS ; 17(10): 501-7, 2003 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-14588090

RESUMEN

Until recently, HIV-infected patients have been excluded from consideration for solid organ transplantation. The relatively high mortality rates among HIV-infected transplant recipients observed in the era prior to the use of highly active antiretroviral therapy (HAART), coupled with long waiting times for cadaveric organs, made it difficult to support organ transplantation in this patient group. However, in response to the marked reductions in morbidity and mortality associated with HIV infection, several transplant centers have developed pilot studies or revised their clinical criteria to allow transplantation in this group of patients. We describe two cases, one kidney and one liver transplant recipient, and review the major clinical and research issues related to this topic. Reports of transplantations in the pre-HAART era highlight two important findings. First, some HIV-infected transplant recipients did very well with long survival periods. However, overall progression to AIDS and death appeared accelerated. We recently reported on our preliminary experience with 45 selected transplant recipients in the HAART era. One-year patient survival rates were similar to unmatched survival data from the United Network for Organ Sharing (UNOS) database. Median CD4+ T-cell counts remained stable in the follow-up period compared to pretransplant. HIV-1 RNA nearly uniformly continued to be suppressed below the limits of detection. Preliminary data are promising and support the current efforts to evaluate patient and graft survival among HIV-infected transplant recipients and to explore the mechanisms underlying the many potential complications of transplantation in this population.


Asunto(s)
Infecciones por VIH/inmunología , Trasplante de Riñón , Trasplante de Hígado , Adulto , Progresión de la Enfermedad , Supervivencia de Injerto/inmunología , Humanos , Masculino , Persona de Mediana Edad , Análisis de Supervivencia
20.
Surgery ; 152(3): 376-81, 2012 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-22938898

RESUMEN

BACKGROUND: In this report, we examine the surgical safety and complications (SC) among 125 liver (L) and 150 kidney (K) HIV+ transplantation (TX) recipients in a prospective nonrandomized U.S. multicenter trial. METHODS: Subjects were required to have CD4+ T-cell counts >200/100 cells/mm3 (K/L) and undetectable plasma HIV-1 RNA (Viral Load [VL]) (K) or expected posttransplantation suppression (L). Impact of SCs (N ≥ 7) was evaluated by use of the proportional hazards models. Baseline morbidity predictors for SCs (N ≥ 7) were assessed in univariate proportional hazards models. RESULTS: At median 2.7 (interquartile range 1.9-4.1) and 2.3 (1.0-3.7) years after TX, 3-month and 1-year graft survival were [K] 96% (95% CI 91%-98%) and 91% (95% CI 85%-94%) and [L] 91% (95% CI 85%-95%) and 77% (95% CI 69%-84%), respectively. A total of 14 K and 28 L graft losses occurred in the first year; 6 K and 11 L were in the first 3 months. A total of 26 (17%) K and 43 (34%) L experienced 29 and 62 SCs, respectively. In the liver multivariate model, re-exploration was marginally associated (hazard ratio [HR] 2.8; 95% CI 1.0-8.4; P = .06) with increased risk of graft loss, whereas a greater MELD score before transplantation (HR 1.07 per point increase; 95% CI: 1.01-1.14; P = .02), and detectable viral load before TX (HR 3.6; 95% CI 0.9-14.6; P = .07) was associated with an increased risk of wound infections/dehiscence. CONCLUSION: The rates and outcomes of surgical complications are similar to what has been observed in the non-HIV setting in carefully selected HIV-infected liver and kidney TX recipients.


Asunto(s)
Supervivencia de Injerto , Infecciones por VIH/epidemiología , Trasplante de Riñón/estadística & datos numéricos , Trasplante de Hígado/estadística & datos numéricos , Complicaciones Posoperatorias/epidemiología , Dehiscencia de la Herida Operatoria/epidemiología , Infección de la Herida Quirúrgica/epidemiología , Fuga Anastomótica/epidemiología , Infecciones por VIH/cirugía , Humanos , Complicaciones Intraoperatorias/epidemiología , Trasplante de Riñón/mortalidad , Trasplante de Hígado/mortalidad , Modelos de Riesgos Proporcionales , Estudios Prospectivos , Reoperación , Tasa de Supervivencia , Trasplante/estadística & datos numéricos , Carga Viral
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