Achilles detachment in rat and stable gastric pentadecapeptide BPC 157: Promoted tendon-to-bone healing and opposed corticosteroid aggravation.
Stable gastric pentadecapeptide BPC 157 (BPC 157, as an antiulcer agent in clinical trials for inflammatory bowel disease; PLD-116, PL 14736, Pliva, no toxicity reported) alone (without carrier) ameliorates healing of tendon and bone, respectively, as well as other tissues. Thereby, we focus on Achilles tendon-to-bone healing: tendon to bone could not be healed spontaneously, but it was recovered by this peptide. After the rat's Achilles tendon was sharply transected from calcaneal bone, agents [BPC 157 (10 microg, 10 ng, 10 pg), 6alpha-methylprednisolone (1 mg), 0.9% NaCl (5 mL)] were given alone or in combination [/kg body weight (b.w.) intraperitoneally, once time daily, first 30-min after surgery, last 24 h before analysis]. Tested at days 1, 4, 7, 10, 14, and 21 after Achilles detachment, BPC 157 improves healing functionally [Achilles functional index (AFI) values substantially increased], biomechanically (load to failure, stiffness, and Young elasticity modulus significantly increased), macro/microscopically, immunohistochemistry (better organization of collagen fibers, and advanced vascular appearance, more collagen type I). 6alpha-Methylprednisolone consistently aggravates the healing, while BPC 157 substantially reduces 6alpha-methylprednisolone healing aggravation. Thus, direct tendon-to-bone healing using stabile nontoxic peptide BPC 157 without a carrier might successfully exchange the present reconstructive surgical methods.
Krivic
Andrija
A
Laboratory for Experimental Surgery, Department of Pharmacology, University of Zagreb Medical School, Salata 11, Zagreb 10000, Croatia. akrivic2004@yahoo.com
Anic
Tomislav
T
Seiwerth
Sven
S
Huljev
Dubravko
D
Sikiric
Predrag
P
D000125:Achilles Tendon / Q000187:drug effects* / Q000293:injuries / Q000502:physiology; D000305:Adrenal Cortex Hormones / Q000633:toxicity*; D000818:Animals; D000897:Anti-Ulcer Agents / Q000494:pharmacology*; D001696:Biomechanical Phenomena; D008297:Male; D009569:Nitric Oxide / Q000502:physiology; D010446:Peptide Fragments / Q000494:pharmacology*; D011506:Proteins / Q000494:pharmacology*; D051381:Rats; D017208:Rats, Wistar; D013708:Tendon Injuries / Q000188:drug therapy* / Q000503:physiopathology; D014945:Wound Healing / Q000187:drug effects*
D000305:Adrenal Cortex Hormones; D000897:Anti-Ulcer Agents; D010446:Peptide Fragments; D011506:Proteins; D009569:Nitric Oxide; C083833:BPC 157