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Palmitoylethanolamide shows limited efficacy in controlling cerebral cryptococcosis in vivo

Melissa E Munzen, Marta Reguera Gomez, Mohamed F Hamed, Vanessa Enriquez, Claudia L Charles-Niño, Michael R Dores, Karina Alviña, Luis R Martinez. Antimicrob Agents Chemother. 2023 Oct 18;67(10):e0045923.

Laboratory studyOther animalsWith amphotericin B (in one arm; palmitoylethanolamide also tested alone)

This study tested palmitoylethanolamide together with amphotericin B (in one arm; palmitoylethanolamide also tested alone). Its results cannot be assigned to palmitoylethanolamide alone. More combination studies.

Design
Laboratory study
Subjects
Mice infected intracerebrally with Cryptococcus neoformans; numbers not stated
Dose used in the study
Not stated in the abstract
Duration
Not stated in the abstract
What was measured
Survival and fungal burden after PEA, amphotericin B, the two combined, or amphotericin B with 5-fluorocytosine.

What the authors reported

PEA alone did not significantly prolong survival or reduce fungal burden. Combined with amphotericin B it had an additive effect on survival and fungal clearance, but this combination was less effective than standard amphotericin B plus 5-fluorocytosine. The authors conclude PEA alone is not effective as an antifungal in this model.

Limits of this study

A mouse infection model; it cannot show effect in people. A largely negative result for PEA alone. Doses and route are not in the abstract. The authors declare no conflict of interest.

Source

PubMed 37750714 · doi:10.1128/aac.00459-23

Entry checked against the abstract on PubMed on 2026-09-22. The dose shown is the dose the researchers used. It is not a recommendation. How to read this page.