title: Human originated bacteria, Lactobacillus rhamnosus PL60, produce conjugated linoleic acid and show anti-obesity effects in diet-induced obese mice.
abstract: Many previous studies have reported that conjugated linoleic acid could be produced by starter culture bacteria, but the effects of the bacteria were not investigated. Moreover, there was no evidence of the conjugated linoleic acid-producing bacteria having potential health or nutritional effects related to conjugated linoleic acid, including reducing body fat. Here, we investigated the anti-obesity effect of Lactobacillus rhamnosus PL60, a human originated bacterium that produces t10, c12-conjugated linoleic acid, on diet-induced obese mice. After 8 weeks of feeding, L. rhamnosus PL60 reduced body weight without reducing energy intake, and caused a significant, specific reduction of white adipose tissue (epididymal and perirenal). Although the size of epididymal adipocytes was not reduced by L. rhamnosus PL60, apoptotic signals and UCP-2 mRNA levels increased in adipose tissue. Liver steatosis, a well known side effect of CLA, was not observed by L. rhamnosus PL60 treatment; on the contrary it seemed to be normalized. Results showed that the amount of conjugated linoleic acid produced by Lactobacillus rhamnosus PL60 was enough to produce an anti-obesity effect.
authors.affiliation: Department of Laboratory Animal Medicine, College of Veterinary Medicine, Seoul National University, Seoul 151-742, Korea.
authors.forename: Hui-Young
authors.initials: HY
authors.lastname: Lee
authors.forename: Jong-Hwan
authors.initials: JH
authors.lastname: Park
authors.forename: Seung-Hyeok
authors.initials: SH
authors.lastname: Seok
authors.forename: Min-Won
authors.initials: MW
authors.lastname: Baek
authors.forename: Dong-Jae
authors.initials: DJ
authors.lastname: Kim
authors.forename: Ki-Eun
authors.initials: KE
authors.lastname: Lee
authors.forename: Kyung-Soo
authors.initials: KS
authors.lastname: Paek
authors.forename: Yeonhee
authors.initials: Y
authors.lastname: Lee
authors.forename: Jae-Hak
authors.initials: JH
authors.lastname: Park
mesh_terms: D000818:Animals; D001691:Biological Therapy; D001835:Body Weight / Q000187:drug effects; D004032:Diet; D002149:Energy Intake / Q000187:drug effects; D006801:Humans; D052201:Lacticaseibacillus rhamnosus / Q000737:chemistry / Q000378:metabolism*; D044243:Linoleic Acids, Conjugated / Q000378:metabolism* / Q000627:therapeutic use; D051379:Mice; D008820:Mice, Obese; D009765:Obesity / Q000382:microbiology / Q000503:physiopathology / Q000628:therapy*; D019936:Probiotics / Q000627:therapeutic use
chemical_list: D044243:Linoleic Acids, Conjugated