title: Role of collagen fibers in acupuncture analgesia therapy on rats.
abstract: Acupuncture, a traditional Chinese therapeutic technique, has been put into practice for more than 4000 years and widely used for pain management since 1958. However, what is the mechanism underlying the acupuncture for analgesia effects by stimulation of acupoints, what substances receive the original mechanical acupuncture signals from the acupoints, or what transforms these signals into effective biological signals are not well understood. In this work, the role of collagen fibers at acupoints during acupuncture analgesia on rats was investigated. When the structure of the collagen fibers at Zusanli (ST36) was destroyed by injection of type I collagenase, the needle force caused by the acupuncture declined and the analgesic effects of rotation or lift-thrusting manipulations was attenuated accompanying the restraint of the degranulation ratios of mast cells. We propose that collagen fibers play an important role in acupuncture-induced analgesia, and they participate in signal transmission and transform processes.
authors.affiliation: Department of Mechanics and Engineering Science, Fudan University, Shanghai, China.
authors.forename: Xiaojia
authors.initials: X
authors.lastname: Yu
authors.forename: Guanghong
authors.initials: G
authors.lastname: Ding
authors.forename: Hong
authors.initials: H
authors.lastname: Huang
authors.forename: Jun
authors.initials: J
authors.lastname: Lin
authors.forename: Wei
authors.initials: W
authors.lastname: Yao
authors.forename: Rui
authors.initials: R
authors.lastname: Zhan
mesh_terms: D015667:Acupuncture Analgesia; D015669:Acupuncture Points; D000818:Animals; D001169:Arthritis, Experimental / Q000378:metabolism / Q000628:therapy*; D015550:Cell Degranulation / Q000187:drug effects / Q000502:physiology; D017364:Collagenases / Q000494:pharmacology; D015671:Electroacupuncture / Q000379:methods*; D024022:Fibrillar Collagens / Q000187:drug effects / Q000502:physiology* / Q000648:ultrastructure; D008407:Mast Cells / Q000473:pathology / Q000502:physiology; D040542:Mechanotransduction, Cellular / Q000502:physiology; D017288:Pain Threshold / Q000187:drug effects / Q000502:physiology; D051381:Rats; D017207:Rats, Sprague-Dawley; D011930:Reaction Time / Q000187:drug effects / Q000502:physiology; D013314:Stress, Mechanical
chemical_list: D024022:Fibrillar Collagens; D017364:Collagenases; C417249:collagenase 1