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The anti-nociceptive effect of BPC-157 on the incisional pain model in rats

  • Jung, Young-Hoon (Department of Anesthesia and Pain Medicine, Pusan National University Hospital) ;
  • Kim, Haekyu (Department of Anesthesia and Pain Medicine, Pusan National University Hospital) ;
  • Kim, Hyaejin (Department of Anesthesia and Pain Medicine, Pusan National University Hospital) ;
  • Kim, Eunsoo (Department of Anesthesia and Pain Medicine, Pusan National University Hospital) ;
  • Baik, Jiseok (Department of Anesthesia and Pain Medicine, Pusan National University Hospital) ;
  • Kang, Hyunjong (Department of Anesthesia and Pain Medicine, Pusan National University Hospital)
  • 투고 : 2022.01.05
  • 심사 : 2022.01.24
  • 발행 : 2022.04.01

초록

Background: The pentadecapeptide BPC-157 has been shown to have anti-inflammatory and wound healing effects on multiple target tissues and organs. Peptides have potent anti-inflammatory effects on periodontal tissues in rats with periodontitis. Few studies have investigated the effect of BPC-157 on pain after dental procedures or oral surgeries. The purpose of the present study was to investigate the antinociceptive effects of BPC-157 on postoperative incisional pain in rats. Methods: Sprague-Dawley rats were randomly divided into five groups: control (saline with the same volume), BPC10 (10 ㎍/kg of BPC-157), BPC20 (20 ㎍/kg of BPC-157), BPC40 (40 ㎍/kg of BPC-157), and morphine (5 mg/kg of morphine). A 1-cm longitudinal incision was made through the skin, fascia, and muscle of the plantar aspect of the hind paw in isoflurane-anesthetised rats. Withdrawal responses were measured using von Frey filaments at 0, 2, 6 h and 4, 7 d after incision. The formalin test was also performed to differentiate its anti-nociceptive effect from an inflammatory reaction or central sensitization. Pain behavior was quantified periodically in phases 1 and 2 by counting the number of flinches in the ipsilateral paw after injection with 30 µL of 5% formalin. Results: The threshold of mechanical allodynia was significantly increased in the BPC10, BPC20, BPC40 and morphine groups compared with that in the control group at 2 h. These increasing thresholds then returned to the levels of the control group. The BPC-157 group showed a much higher threshold at 4 days after incision than the control group. The thresholds of the BPC groups, except the morphine group, were normalized 7 days after incision. The flinching numbers of the BPC10, BPC20, BPC40 and morphine groups were significantly decreased in phase 1, but there was no decrease in the BPC-157 groups except the morphine group in phase 2. Conclusions: BPC-157 was effective only for a short period after incision. It was also effective during phase 1 but not during phase 2, as determined by the formalin test. BPC-157 might have a short antinociceptive effect, even though it has anti-inflammatory and wound healing effects.

키워드

과제정보

The authors declare no conflict of interest relevant to this article. The study was funded by the Basic Research Support Project of Pusan National University.

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