title: Response to therapy in patients with cryptococcosis and AIDS: Association with in vitro susceptibility to fluconazole.
abstract: BACKGROUND
  The implications of the Cryptococcus neoformans resistance to fluconazole on patient therapy have not been fully elucidated due to the discordant results found in published studies.
  
  
  OBJECTIVE
  To establish the influence of C. neoformans resistance to fluconazole in the therapy of individuals with cryptococcosis and AIDS.
  
  
  METHODS
  This study retrospectively compared the clinical course of patients with cryptococcosis according to the level of fluconazole resistance of their C. neoformans isolates.
  
  
  RESULTS
  This study included 71 episodes of cryptococcosis, defined as those isolates of C. neoformans obtained from patients with mycosis, of which 36 isolates were sensitive to fluconazole, 20 susceptible dose-dependent (SDD), and 15 were resistant. There were 5 treatment failures in the consolidation phase; two occurred in patients who had a susceptible strain, 2 in patients who had SDD strains, and one in a patient who had a resistant strain. During the maintenance treatment, relapses occurred in 4 of 33 patients (12%), seen during the follow-up period, none of which occurred in the group with resistant isolates. There were no significant differences in survival time free of treatment failure (p=0.65) or survival time free of failure or relapse (p=0.38). These results were not affected when tested in a Cox model that included age, CD4T lymphocyte counts, and use of antiretroviral therapy.
  
  
  CONCLUSIONS
  In HIV patients with cryptococcosis, the resistance of C. neoformans appeared not to increase the risk of failure or relapse during treatment.
authors: School of Health Sciences, Universidad Pontificia Bolivariana, Calle 78b No. 72(A)-109, Medellín, Colombia. Electronic address: carlosagudelo@yahoo.com.
authors: Carlos Andrés
authors: CA
authors: Agudelo
authors: School of Health Sciences, Universidad Pontificia Bolivariana, Calle 78b No. 72(A)-109, Medellín, Colombia.
authors: Carolina
authors: C
authors: Muñoz
authors: School of Health Sciences, Universidad Pontificia Bolivariana, Calle 78b No. 72(A)-109, Medellín, Colombia.
authors: Alex
authors: A
authors: Ramírez
authors: Medical and Experimental Mycology Unit, Corporación para Investigaciones Biológicas, Carrera 72(A) No. 78(B)-141, Medellín, Colombia.
authors: Angela María
authors: AM
authors: Tobón
authors: Medical and Experimental Mycology Unit, Corporación para Investigaciones Biológicas, Carrera 72(A) No. 78(B)-141, Medellín, Colombia.
authors: Catalina
authors: C
authors: de Bedout Bact
authors: Medical and Experimental Mycology Unit, Corporación para Investigaciones Biológicas, Carrera 72(A) No. 78(B)-141, Medellín, Colombia.
authors: Luz Elena
authors: LE
authors: Cano
authors: Medical and Experimental Mycology Unit, Corporación para Investigaciones Biológicas, Carrera 72(A) No. 78(B)-141, Medellín, Colombia.
authors: Angela
authors: A
authors: Restrepo
mesh_terms: D017088:AIDS-Related Opportunistic Infections / Q000188:drug therapy*; D000163:Acquired Immunodeficiency Syndrome / Q000188:drug therapy; D000328:Adult; D000666:Amphotericin B / Q000627:therapeutic use; D019380:Anti-HIV Agents / Q000627:therapeutic use; D000935:Antifungal Agents / Q000494:pharmacology / Q000627:therapeutic use*; D018791:CD4 Lymphocyte Count; D003453:Cryptococcosis / Q000150:complications / Q000188:drug therapy*; D003455:Cryptococcus neoformans / Q000187:drug effects*; D018572:Disease-Free Survival; D025141:Drug Resistance, Fungal; D005260:Female; D015725:Fluconazole / Q000494:pharmacology / Q000627:therapeutic use*; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D016919:Meningitis, Cryptococcal / Q000150:complications / Q000188:drug therapy; D008826:Microbial Sensitivity Tests; D016016:Proportional Hazards Models; D012008:Recurrence; D012189:Retrospective Studies; D019562:Viral Load
chemical_list: D019380:Anti-HIV Agents; D000935:Antifungal Agents; D000666:Amphotericin B; D015725:Fluconazole
keywords: AIDS; Cryptococcus neoformans; Fluconazole resistance; Resistencia a fluconazol; Sida