Objectives: There is an unmet need for agents that can stimulate bone healing. The goal of this study was to evaluate the effects of basic proteins from milk whey (milk basic protein [MBP]) on fracture healing in mice.
Methods: Closed tibial transverse fractures were generated in 6-wk-old male C3 H/HeJ mice given either tap water or MBP-supplemented water for 3, 7, 14, 28, and 56 d after fracture generation.
We examined the distribution of substance P and neurokinin-1 (NK1) receptors and substance-P-containing nerve fibers in the peri-implant mucosa around titanium dental implants in rats. Immunohistochemistry and immunocytochemistry revealed that substance-P-immunoreactive nerve fibers abundantly innervated the peri-implant epithelium (PIE) compared with other epithelia of the peri-implant mucosa. NK1 receptor mRNA and protein expression in the peri-implant mucosa were confirmed by reverse transcription with the polymerase chain reaction and immunoblotting.
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