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Pain Research and Management
Volume 2016 (2016), Article ID 5080438, 7 pages
http://dx.doi.org/10.1155/2016/5080438
Research Article

Potential Nociceptive Regulatory Effect of Probiotic Lactobacillus rhamnosus PB01 (DSM 14870) on Mechanical Sensitivity in Diet-Induced Obesity Model

1Biomedicine Group, Department of Health Science and Technology, Faculty of Medicine, Aalborg University, Aalborg, Denmark
2SMI®, Department of Health Science and Technology, Faculty of Medicine, Aalborg University, Aalborg, Denmark
3Department of Clinical Medicine, The Faculty of Medicine, Aalborg University Hospital, Aalborg, Denmark
4Bifodan A/S, Hundested, Denmark

Received 3 March 2016; Accepted 3 August 2016

Academic Editor: Anna Maria Aloisi

Copyright © 2016 Fereshteh Dardmeh et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Treatments for obesity have been shown to reduce pain secondary to weight loss. Intestinal microbiota, as an endogenous factor, influences obesity and pain sensitivity but the effect of oral probiotic supplementation on musculoskeletal pain perception has not been studied systematically. The present study examined the effect of a single daily oral dose (1 × 109 CFU) of probiotics (Lactobacillus rhamnosus PB01, DSM14870) supplement on mechanical pain thresholds in behaving diet-induced obese (DIO) mice and their normal weight (NW) controls. The mice (, 6-week-old male) were randomly divided into four groups on either standard or high fat diet with and without probiotic supplementation. Both DIO and NW groups with probiotic supplementation maintained an insignificant weight gain while the control groups gained significant weight (). Similarly, both DIO and NW probiotics supplemented groups demonstrated a significantly () lower sensitivity to mechanical stimulation compared to their corresponding control. The results of this study suggest a protective effect of probiotics on nociception circuits, which propose a direct result of the weight reduction or an indirect result of anti-inflammatory properties of the probiotics. Deciphering the exact underlying mechanism of the weight loss and lowering nociception effect of the probiotic applied in this study require further investigation.