Odor-causing Bacteria in Armpits Targeted Using Bacteriophage-derived Lysin
Published:18 Jun.2024 Source:Osaka Metropolitan University
Body odor from the armpits comes from bacteria metabolizing sweat produced by the apocrine glands. These bacteria are native to our skin, but the odors produced differ among people. Generally, people use deodorants on their armpits, but perhaps there is a way to get rid of the bacteria.
To find out, a research team led by Osaka Metropolitan University Professor Satoshi Uematsu and Associate Professor Kosuke Fujimoto at the Graduate School of Medicine collected body fluid samples from the armpits of 20 men that were deemed healthy. The researchers analyzed the matter produced from bacterial metabolism and the DNA of the skin microflora and found an increased presence of odor-causing precursors in those 11 samples along with a proliferation of Staphylococcus hominis bacteria. The team then synthesized a lysin from a bacteriophage, or virus that attacks bacteria, that infects S. hominis. During in vitro experiments, this lysin was found to target only S. hominis, not other bacteria normally present on the skin.
Axillary [armpit] odors are one of the few dermatological disorders in which bacteria are the primary cause. Although many patients suffer from axillary odors, there are few treatment options. We believe that this study will lead to a new therapy.