Caspofungin benefit on phagocytes from patients with renal dysfunction infected with multidrug-resistantCandida glabrata

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Aim: We evaluated the potential impact of caspofungin (CAS) on the functional activities of polymorphonuclear leukocytes (PMNs) from hemodialyzed patients (HDs) and renal transplant recipients (RTRs) against a multidrug-resistant clinical strain of Candida glabrata compared with those of PMNs from healthy subjects (HSs). Materials & methods: Effects of CAS on PMN phagocytosis and intracellular killing towards multidrug-resistant C. glabrata were evaluated in 66 HDs, 54 RTRs and 30 HSs in the absence and presence of CAS at MIC and sub-MICs. Results: When HD PMNs and RTR PMNs were exposed to both MICs and sub-MICs of CAS, their fungicidal activity against the multidrug-resistant C. glabrata strain was significantly higher than that of drug-free controls, with survival index values that overlapped with those achieved by HS PMNs. Conclusion: The obtained results underline the role of CAS in the restoration of the impaired PMN functions in HDs and RTRs. CAS might still constitute an effective therapeutic option for the treatment of invasive fungal infections caused by multidrug-resistant C. glabrata in patients with altered phagocyte-dependent innate immunity.

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