Effect of basic fibroblast growth factor. An in vitro study of tendon healing.
The effect of basic fibroblast growth factor on the proliferative and chemotactic response of cultured rat patellar tendon fibroblasts was studied in an in vitro wound closure model. In quiescent confluent fibroblast culture, a uniform cell free zone, or wound, was generated mechanically as an in vitro wound. The width of the cell free zone was measured at 0, 6, 12, and 24 hours after the injury, in the presence of 0, 2, 10, or 50 mg/mL of basic fibroblast growth factor. Basic fibroblast growth factor, at a concentration of 10 ng/mL, significantly accelerated wound closure, resulting in almost complete closure by 24 hours after the injury. Basic fibroblast growth factor, at a concentration of 2 ng/mL, significantly enhanced cell proliferation as estimated by 5-Bromo-2'-deoxyuridine incorporation, but increasing the concentration of the growth factor to 50 ng/mL did not show additional improvement. Thus, the enhancement of wound closure by basic fibroblast growth factor may be caused by the cell proliferative response, rather than by chemotaxis.
Chan
B P
BP
Hong Kong Centre of Sports Medicine and Sports Science, Department of Orthopaedics and Traumatology, Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, New Territories, Hong Kong.
Chan
K M
KM
Maffulli
N
N
Webb
S
S
Lee
K K
KK
D000818:Animals; D001973:Bromodeoxyuridine / Q000378:metabolism; D002455:Cell Division; D002478:Cells, Cultured; D002633:Chemotaxis; D016222:Fibroblast Growth Factor 2 / Q000502:physiology*; D005347:Fibroblasts / Q000473:pathology / Q000502:physiology; D008297:Male; D017847:Patellar Ligament / Q000293:injuries* / Q000473:pathology / Q000502:physiology*; D051381:Rats; D017207:Rats, Sprague-Dawley; D014945:Wound Healing / Q000502:physiology*
D016222:Fibroblast Growth Factor 2; D001973:Bromodeoxyuridine