PMID- 29023413 OWN - NLM STAT- MEDLINE DCOM- 20180530 LR - 20220410 IS - 1420-3049 (Electronic) IS - 1420-3049 (Linking) VI - 22 IP - 10 DP - 2017 Oct 12 TI - Diallylthiosulfinate (Allicin), a Volatile Antimicrobial from Garlic (Allium sativum), Kills Human Lung Pathogenic Bacteria, Including MDR Strains, as a Vapor. LID - 10.3390/molecules22101711 [doi] LID - 1711 AB - Garlic (Allium sativum) has potent antimicrobial activity due to allicin (diallylthiosulfinate) synthesized by enzyme catalysis in damaged garlic tissues. Allicin gives crushed garlic its characteristic odor and its volatility makes it potentially useful for combating lung infections. Allicin was synthesized (>98% pure) by oxidation of diallyl disulfide by H(2)O(2) using formic acid as a catalyst and the growth inhibitory effect of allicin vapor and allicin in solution to clinical isolates of lung pathogenic bacteria from the genera Pseudomonas, Streptococcus, and Staphylococcus, including multi-drug resistant (MDR) strains, was demonstrated. Minimal inhibitory (MIC) and minimal bactericidal concentrations (MBC) were determined and compared to clinical antibiotics using standard European Committee on Antimicrobial Susceptibility Testing (EUCAST) procedures. The cytotoxicity of allicin to human lung and colon epithelial and murine fibroblast cells was tested in vitro and shown to be ameliorated by glutathione (GSH). Similarly, the sensitivity of rat precision-cut lung slices (PCLS) to allicin was decreased by raising the [GSH] to the approximate blood plasma level of 1 mM. Because allicin inhibited bacterial growth as a vapor, it could be used to combat bacterial lung infections via direct inhalation. Since there are no volatile antibiotics available to treat pulmonary infections, allicin, particularly at sublethal doses in combination with oral antibiotics, could make a valuable addition to currently available treatments. FAU - Reiter, Jana AU - Reiter J AD - Department of Plant Physiology, RWTH Aachen University, 52056 Aachen, Germany. jana.reiter@rwth-aachen.de. FAU - Levina, Natalja AU - Levina N AD - German National Reference Centre of Streptococci (GNRCS), University Hospital RWTH Aachen, 52074 Aachen, Germany. nlevina@ukaachen.de. FAU - van der Linden, Mark AU - van der Linden M AD - German National Reference Centre of Streptococci (GNRCS), University Hospital RWTH Aachen, 52074 Aachen, Germany. mlinden@ukaachen.de. FAU - Gruhlke, Martin AU - Gruhlke M AD - Department of Plant Physiology, RWTH Aachen University, 52056 Aachen, Germany. martin.gruhlke@rwth-aachen.de. FAU - Martin, Christian AU - Martin C AD - Institute of Pharmacology and Toxicology, Medical Faculty of RWTH Aachen University, 52074 Aachen, Germany. chmartin@ukaachen.de. FAU - Slusarenko, Alan J AU - Slusarenko AJ AD - Department of Plant Physiology, RWTH Aachen University, 52056 Aachen, Germany. alan.slusarenko@bio3.rwth-aachen.de. LA - eng PT - Journal Article DEP - 20171012 PL - Switzerland TA - Molecules JT - Molecules (Basel, Switzerland) JID - 100964009 RN - 0 (Anti-Infective Agents) RN - 0 (Disulfides) RN - 0 (Sulfinic Acids) RN - 0 (Volatile Organic Compounds) RN - 3C39BY17Y6 (allicin) SB - IM MH - Animals MH - Anti-Infective Agents/chemistry/*pharmacology MH - Bacteria/*drug effects MH - Cell Line MH - Disulfides MH - Drug Resistance, Multiple, Bacterial/*drug effects MH - Garlic/*chemistry MH - Humans MH - Lung/microbiology MH - Microbial Sensitivity Tests MH - Pseudomonas aeruginosa/drug effects MH - Rats MH - Streptococcus pneumoniae/drug effects MH - Sulfinic Acids/chemistry/*pharmacology MH - Volatile Organic Compounds/chemistry/*pharmacology PMC - PMC6151386 OTO - NOTNLM OT - Allium sativum OT - MDR strains OT - Pseudomonas aeruginosa OT - Streptococcus pneumoniae OT - allicin OT - antimicrobial OT - garlic OT - lung pathogenic bacteria OT - volatile antimicrobial agent COIS- The authors declare no conflict of interest. EDAT- 2017/10/13 06:00 MHDA- 2018/05/31 06:00 PMCR- 2017/10/12 CRDT- 2017/10/13 06:00 PHST- 2017/09/13 00:00 [received] PHST- 2017/10/09 00:00 [accepted] PHST- 2017/10/13 06:00 [entrez] PHST- 2017/10/13 06:00 [pubmed] PHST- 2018/05/31 06:00 [medline] PHST- 2017/10/12 00:00 [pmc-release] AID - molecules22101711 [pii] AID - molecules-22-01711 [pii] AID - 10.3390/molecules22101711 [doi] PST - epublish SO - Molecules. 2017 Oct 12;22(10):1711. doi: 10.3390/molecules22101711.