Browsing by Author "Clotet, Bonaventura"

Now showing 1 - 7 of 7
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    A Randomized, Open-Label Study of a Nucleoside Analogue Reverse Transcriptase Inhibitor-Sparing Regimen in Antiretroviral-Naive HIV-Infected Patients
    (2009-03) Harris, Marianne; Côté, Hélène; Ochoa, Claudia; Allavena, Clotilde; Negredo, Eugenia; Thorne, Anona; Cahn, Pedro; Raffi, Francois; Clotet, Bonaventura; Singer, Joel; Montaner, Julio; The CTN 177 Study Team
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    Características clinicoepidemiológicas y tendencias en el tratamiento antirretroviral de una cohorte de pacientes con infección por el virus de la inmunodeficiencia humana. Cohorte PISCIS
    (2005-04) Jaén, Ángeles; Casabona, Jordi; Esteve, Anna; Miró, Jose M; Tural, Cristina; Ferrer, Elena; Riera, Melchor; Segura, Ferran; Force, Lluís; Sued, Omar; Vilaró, Josep; Masabeu, Àngels; García, Isabel; Dorca, Esther; Altès, Jordi; Navarro, Gemma; Podzamczer, Daniel; Villalonga, Concepción; Clotet, Bonaventura; Gatell, Jose
    Fundamento y objetivo: Los objetivos de este estudio fueron describir el proceso de implementación de la cohorte PISCIS y las características clinicoepidemiológicas y las tendencias en el tratamiento antirretroviral (TARV) de los pacientes con infección por el virus de la inmunodeficiencia humana (VIH) incluidos desde 1998 hasta 2003. Pacientes y método: Estudio de cohorte prospectivo de pacientes con infección por el VIH de 16 años de edad o mayores atendidos en primera visita en 10 hospitales de Cataluña y uno de las Baleares. El análisis estadístico de las tendencias se realizó mediante el test de la *2 de Mantel. Resultados: Se incluyó a un total de 5.968 pacientes (edad media: 39,5 años; 75% varones) con un tiempo medio de seguimiento de 26,4 meses (13.130 personas-año). Del total, 2.763 fueron nuevos diagnósticos, en los que la vía de transmisión más frecuente fue la heterosexual (43%), seguida de la homosexual (31%). Se observó una tendencia significativamente creciente en la proporción de sujetos de edad inferior a 35 años e inmigrantes. Un 43% tenían una cifra de linfocitos CD4 inferior a 200 células/µl en la determinación más cercana al diagnóstico de la infección por el VIH. Del total, un 87% estaban en TARV en el año 2003. Entre los pacientes no tratados previamente que iniciaron pautas de TARV con 3 o más fármacos, se observó una disminución de las pautas que incluían inhibidores de la proteasa (del 85% en 1998 al 25% en 2003; p < 0,001), mientras que aumentaron otras que contenían inhibidores de la transcriptasa inversa no análogos y análogos de los nucleósidos. Conclusiones: Las cohortes de pacientes con infección por el VIH son viables en nuestro medio y tienen gran utilidad clínica y en salud pública. La vía de transmisión más frecuente entre los nuevos diagnósticos es la heterosexual, el retraso en el diagnóstico es elevado y las pautas de TARV han ido cambiando para adaptarse a las recomendadas por las guías.
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    Determinants of HIV Progression and Assessment of the Optimal Time to Initiate Highly Active Antiretroviral Therapy
    (2008-02-01) Jaén, Ángeles; Esteve, Anna; Miró, Josep M; Tural, Cristina; Montoliu, Alexandra; Ferrer, Elena; Riera, Melcior; Segura, Ferran; Force, Lluis; Sued, Omar; Vilaró, Josep; Garcia, Isabel; Masabeu, Angels; Altès, Jordi; Clotet, Bonaventura; Podzamczer, Daniel; Murillas, Javier; Navarro, Gemma; Gatell, Jose; Casabona, Jordi; the PISCIS Study Group
    Objective: We analyze the factors related to progression to AIDS or death in HIV-infected patients from the Proyecto para la Informatización del Seguimiento Clínico epidemiológico de los pacientes con Infección por VIH/SIDA (PISCIS) Cohort and we assess the optimal time to initiate highly active antiretroviral therapy (HAART) taking lead time into account. Methods: We selected naive patients who were AIDS-free and initiated HAART after January 1998. Statistical analyses were performed using Cox proportional hazards models. Lead time was defined as the time it took the deferred group with an early disease stage to reach the later stage. The analysis accounting for lead time was performed using multiple imputation methods based on estimates from the pre-HAART period as described elsewhere. Results: Multivariate analysis on 2035 patients (median follow-up = 34.3 months) showed significantly higher hazard ratios (HRs) for a CD4 count <200 cells/μL (HR = 3.79, 95% confidence interval [CI]: 2.18 to 6.57), HIV-1 RNA level >100,000 copies/mL (HR = 1.84, 95% CI: 1.26 to 2.69), and hepatitis C virus (HCV) coinfection (HR = 2.40, 95% CI: 1.65 to 3.49), whereas a lower risk was found for those who started HAART between January 2001 and June 2004 (HR = 0.55, 95% CI: 0.30 to 0.90). When lead time and unseen events were included, we found a higher risk of progression to AIDS among patients who deferred treatment when the CD4 count reached <200 cells/μL (HR = 2.97, 95% CI: 1.91 to 4.63) and 200 to 350 cells/μL (HR = 1.85, 95% CI: 1.03 to 3.33) compared with those who started treatment with CD4 counts from 200 to 350 cells/μL and >350 cells/μL, respectively. Conclusions: Advanced HIV disease, HCV coinfection, and early HAART period were determinants of AIDS progression or death. Lead-time analysis in asymptomatic HIV-infected patients suggests that the best time to start HAART is before the CD4 count falls to lower than 350 cells/μL.
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    Durable efficacy of tipranavir-ritonavir in combination with an optimised background regimen of antiretroviral drugs for treatment-experienced HIV-1-infected patients at 48 weeks in the Randomized Evaluation of Strategic Intervention in multi-drug reSistant patients with Tipranavir (RESIST) studies: An analysis of combined data from two randomised open-label trials
    (2006) Hicks, Charles B.; Cahn, Pedro; Cooper, David A.; Walmsley, Sharon L.; Katlama, Christine; Clotet, Bonaventura; Lazzarin, Adriano; Johnson, Mark A.; Neubacher, Daniel; Mayers, David; Valdez, Hector; RESIST investigator group
    Background: Treatment options for HIV-1 infected individuals who have received extensive previous antiretroviral therapy are limited. We compared efficacy and safety of the novel non-peptidic protease inhibitor tipranavir co-administered with ritonavir plus an optimised background regimen with that of an investigator-selected ritonavir-boosted comparator protease inhibitor (CPI-ritonavir) in such patients. Methods: We did a combined analysis of 48-week data from two ongoing, randomised, open-label, multinational, phase III, RESIST studies. HIV-1-infected adults with 3 months or longer previous triple antiretroviral class experience, two or more previous protease inhibitor regimens, HIV-1 RNA 1000 copies per mL or greater, and genotypically demonstrated primary resistance to protease inhibitor, were eligible. Primary endpoints were proportion of treatment responders (with reduction in viral load of 1 log(10) copies per mL or greater below baseline without treatment change) at 48 weeks and time to treatment failure through 48 weeks (intention-to-treat analysis). The RESIST studies are registered with ClinicalTrials.gov, numbers NCT00054717 (RESIST-1) and NCT00144170 (RESIST-2). Findings: 3324 patients were screened; 746 received tipranavir-ritonavir and 737 CPI-ritonavir. 486 (65.1%) patients on tipranavir-ritonavir and 192 (26.1%) on CPI-ritonavir remained on assigned treatment until week 48. At week 48, more patients achieved and maintained treatment response in the tipranavir-ritonavir group than in the CPI-ritonavir group (251 [33.6%] vs 113 [15.3%]; p<0.0001). Median time to treatment failure was significantly longer in the tipranavir-ritonavir group than in the CPI-ritonavir group (113 days vs 0 days; p<0.0001). Gastrointestinal system disorders and raised transaminase, cholesterol, and triglycerides were more frequent in the tipranavir-ritonavir group than in the CPI-ritonavir group. Interpretation: Compared with CPI-ritonavir, tipranavir-ritonavir with an optimised background regimen provides better virological and immunological responses over 48 weeks in patients who have received extensive previous antiretroviral treatment.
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    HIV and aging, biological mechanisms, and therapies: What do we know?
    (Permanyer Publications, 2022) Grosso, Tomás M.; Alcamí, José; Arribas, Jose; Martín, Marta; Sereti, Irini; Tarr, Philip; Cahn, Pedro; Clotet, Bonaventura; Sued, Omar; Negredo, Eugenia
    Aging, a time-dependent loss of physiological function, and its drivers are turning into a significant topic of research as the population's mean age increases. Epigenetic alterations, telomere shortening or dysfunction, mitogenic stress, oxidative stress, or accumulation of DNA damage can drive the cell to senescence: a permanent cell cycle arrest sometimes associated with a secretory phenotype and inflammatory consequences in the surrounding tissue. The amount of senescent cells grows over time in older organisms and may induce tissue inflammation and threaten overall tissue homeostasis, favoring aging. Senolytic and senomorphic therapeutics are an emerging approach to eliminate senescent cells or to block their secretory phenotypes respectively. Given that people living with HIV suffer non-AIDS comorbidities in a higher prevalence than the general population, aging is accentuated among them. Inflammation biomarkers may be helpful to assess prognosis or act as surrogate endpoints for studies of strategies focused on reversal of HIV-associated accelerated aging. This review summarizes the latest findings in aging and its major drivers, under the light of HIV infection. Since the number of older PLWH is currently rising, it will be of great importance to address and treat their age-related conditions, as well as to better decipher their biological mechanisms.
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    HIV-1 infected patients older than 50 years. PISCIS cohort study
    (2008) Navarro, Gemma; Nogueras, Maria M.; Segura, Ferran; Casabona, Jordi; Miro, Jose M.; Murillas, Javier; Tural, Cecilio; Ferrer, Enrique; Jaén, Amelia; Force, Laura; Vilaró, Laura; García, Iván; Masabeu, Antoni; Altés, José; Esteve, Albert; Sued, Omar; Riera, Maria; Clotet, Bonaventura; Podzamczer, Daniel; Gatell, Jose; PISCIS Study Group
    Objective: The aim of this study is to characterize the ways in which older HIV-infected people differ from younger HIV-infected people. Methods: Prospective cohort study. PISCIS cohort includes newly attended HIV-infected subjects since January 1, 1998. Naive patients were selected. Two groups were defined: G1 (>or=50 years at time of diagnosis, n=493) and G2 (18-49 years, n=4511). Statistical analysis was performed using chi(2), Student's t test, Cox regression and linear mixed models. Results: G1 had different features: males (G1: 84% vs. G2: 75%, p<0.001), sexual transmission (52% vs. 32%, p<0.001), AIDS at first visit (38% vs. 22%, p<0.001). The follow-up was 6 years. Ninety-five percent of patients in G1 and 92% in G2 presented a detectable viral load (>or=500 copies/mm(3)) at the first visit (p=0.016). G1 presented lower CD4 levels with respect to G2 throughout the period but the increase of CD4 in G1 at the end of the study period was 254 cells/mm(3) whereas for G2 it was 196 cells/mm(3) (p<0.001). Mortality was 9% for G1 and 4% for G2 (p<0.001). Conclusions: HIV-infected people diagnosed at the age of 50 years or older showed different features. They showed good viral and immunological response to HAART.
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    Identifying the needs of older people living with HIV (≥50 years old) from multiple centres over the world: a descriptive analysis
    (Springer Nature, 2023-02) Grosso, Tomás Martín; Hernández‑Sánchez, Diana; Dragovic, Gordana; Vasylyev, Marta; Saumoy, María; Blanco, José Ramón; García, Diego; Koval, Tetiana; Loste, Cora; Westerhof, Tendayi; Clotet, Bonaventura; Sued, Omar; Cahn, Pedro; Negredo, Eugènia
    Background Older People Living with HIV (OPWH) combine both aging and HIV-infection features, resulting in ageism, stigma, social isolation, and low quality of life. This context brings up new challenges for healthcare professionals, who now must aid patients with a significant comorbidity burden and polypharmacy treatments. OPWH opinion on their health management is hardly ever considered as a variable to study, though it would help to understand their needs on dissimilar settings. Methods We performed a cross-sectional, comparative study including patients living with HIV aged ≥50 years old from multiple centers worldwide and gave them a survey addressing their perception on overall health issues, psychological problems, social activities, geriatric conditions, and opinions on healthcare. Data was analyzed through Chisquared tests sorting by geographical regions, age groups, or both. Results We organized 680 participants data by location (Center and South America [CSA], Western Europe [WE], Africa, Eastern Europe and Israel [EEI]) and by age groups (50- 55, 56-65, 66-75, >75). In EEI, HIV serostatus socializing and reaching undetectable viral load were the main problems. CSA participants are the least satisfied regarding their healthcare, and a great part of them are not retired. Africans show the best health perception, have financial problems, and fancy their HIV doctors. WE is the most developed region studied and their participants report the best scores. Moreover, older age groups tend to live alone, have a lower perception of psychological problems, and reduced social life. Conclusions Patients’ opinions outline region- and age-specific unmet needs. In EEI, socializing HIV and reaching undetectable viral load were the main concerns. CSA low satisfaction outcomes might reflect high expectations or profound inequities in the region. African participants results mirror a system where general health is hard to achieve, but HIV clinics are much more appealing to them. WE is the most satisfied region about their healthcare. In this context, age-specific information, education and counseling programs (i.e. Patient Reported Outcomes, Patient Centered Care, multidisciplinary teams) are needed to promote physical and mental health among older adults living with HIV/AIDS. This is crucial for improving health-related quality of life and patient’s satisfaction.