PMID- 31163021 OWN - NLM STAT- MEDLINE DCOM- 20191127 LR - 20200309 IS - 1935-2735 (Electronic) IS - 1935-2727 (Print) IS - 1935-2727 (Linking) VI - 13 IP - 6 DP - 2019 Jun TI - Antifungal activity of two oxadiazole compounds for the paracoccidioidomycosis treatment. PG - e0007441 LID - 10.1371/journal.pntd.0007441 [doi] LID - e0007441 AB - Paracoccidioidomycosis (PCM) is a neglected disease present in Latin America with difficulty in treatment and occurrence of serious sequelae. Thus, the development of alternative therapies is imperative. In the current work, two oxadiazole compounds (LMM5 and LMM11) presented fungicidal activity against Paracoccidioides spp. The minimum inhibitory and fungicidal concentration values ranged from 1 to 32 mug/mL, and a synergic effect was observed for both compounds when combined with Amphotericin B. LMM5 and LMM11 were able to reduce CFU counts (>/=2 log10) on the 5th and 7th days of time-kill curve, respectively. The fungicide effect was confirmed by fluorescence microscopy (FUN-1/FUN-2). The hippocratic screening and biochemical analysis were performed in Balb/c male mice that received a high dose of each compound, and the compounds showed no in vivo toxicity. The treatment of experimental PCM with the new oxadiazoles led to significant reduction in CFU (>/=1 log10). Histopathological analysis of the groups treated exhibited control of inflammation, as well as preserved lung areas. These findings suggest that LMM5 and LMM11 are promising hits structures, opening the door for implementing new PCM therapies. FAU - Rodrigues-Vendramini, Franciele Abigail Vilugron AU - Rodrigues-Vendramini FAV AD - Department of Clinical and Biomedical Analysis, State University of Maringa, Maringa, Brazil. FAU - Faria, Daniella Renata AU - Faria DR AD - Department of Clinical and Biomedical Analysis, State University of Maringa, Maringa, Brazil. FAU - Arita, Glaucia Sayuri AU - Arita GS AD - Department of Clinical and Biomedical Analysis, State University of Maringa, Maringa, Brazil. FAU - Capoci, Isis Regina Grenier AU - Capoci IRG AD - Department of Clinical and Biomedical Analysis, State University of Maringa, Maringa, Brazil. FAU - Sakita, Karina Mayumi AU - Sakita KM AD - Department of Clinical and Biomedical Analysis, State University of Maringa, Maringa, Brazil. FAU - Caparroz-Assef, Silvana Martins AU - Caparroz-Assef SM AD - Department of Pharmacology and Therapeutics, State University of Maringa, Maringa, Brazil. FAU - Becker, Tania Cristina Alexandrino AU - Becker TCA AD - Department of Basic Health Sciences, State University of Maringa, Maringa, Brazil. FAU - de Souza Bonfim-Mendonca, Patricia AU - de Souza Bonfim-Mendonca P AD - Department of Clinical and Biomedical Analysis, State University of Maringa, Maringa, Brazil. FAU - Felipe, Maria Sueli AU - Felipe MS AD - Department of Cell Biology, Institute of Biological Sciences, University of Brasilia, Brazil. FAU - Svidzinski, Terezinha Inez Estivalet AU - Svidzinski TIE AD - Department of Clinical and Biomedical Analysis, State University of Maringa, Maringa, Brazil. FAU - Maigret, Bernard AU - Maigret B AD - LORIA, Lorraine University, Nancy, France. FAU - Kioshima, Erika Seki AU - Kioshima ES AUID- ORCID: 0000-0003-3290-8577 AD - Department of Clinical and Biomedical Analysis, State University of Maringa, Maringa, Brazil. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20190604 PL - United States TA - PLoS Negl Trop Dis JT - PLoS neglected tropical diseases JID - 101291488 RN - 0 (Antifungal Agents) RN - 0 (Oxadiazoles) RN - 7XU7A7DROE (Amphotericin B) SB - IM MH - Amphotericin B/pharmacology MH - Animals MH - Antifungal Agents/administration & dosage/*pharmacology MH - Colony Count, Microbial MH - Disease Models, Animal MH - Drug Synergism MH - Histocytochemistry MH - Lung/microbiology/pathology MH - Male MH - Mice, Inbred BALB C MH - Microbial Sensitivity Tests MH - Microbial Viability/drug effects MH - Oxadiazoles/administration & dosage/*pharmacology MH - Paracoccidioides/*drug effects MH - Paracoccidioidomycosis/drug therapy/microbiology/pathology MH - Treatment Outcome PMC - PMC6548352 COIS- The authors have declared that no competing interests exist. EDAT- 2019/06/05 06:00 MHDA- 2019/11/28 06:00 PMCR- 2019/06/04 CRDT- 2019/06/05 06:00 PHST- 2018/12/13 00:00 [received] PHST- 2019/05/06 00:00 [accepted] PHST- 2019/06/05 06:00 [entrez] PHST- 2019/06/05 06:00 [pubmed] PHST- 2019/11/28 06:00 [medline] PHST- 2019/06/04 00:00 [pmc-release] AID - PNTD-D-18-01983 [pii] AID - 10.1371/journal.pntd.0007441 [doi] PST - epublish SO - PLoS Negl Trop Dis. 2019 Jun 4;13(6):e0007441. doi: 10.1371/journal.pntd.0007441. eCollection 2019 Jun.