Through my reading, I noticed many papers noted that an indole test for C. acnes appears positive, however, I am not getting the pink layer that's associated with an indole positive test. Is there any reason why this might be the case?
acnes bacteria use sebum, cellular debris and metabolic byproducts from the surrounding skin tissue as their primary sources of energy and nutrients. Elevated production of sebum by hyperactive sebaceous glands (sebaceous hyperplasia) or blockage of the follicle can cause C. acnes bacteria to grow and multiply.Infection is a rare but serious complication of shoulder arthroplasty. The most prevalent cause of patient infections is Cutibacterium acnes (formerly Proprionibacterium acnes), a commensal skin bacterial species.Antibiotics used to treat anaerobic infections usually suffice for other types of Cutibacterium infections. C acnes is generally highly susceptible to a wide range of antibiotics. These include the penicillins, carbapenems, and clindamycin. In addition, vancomycin and teicoplanin have been used.