Stomatology ›› 2026, Vol. 46 ›› Issue (2): 112-117.doi: 10.13591/j.cnki.kqyx.2026.02.005

• Basic and Clinical Research • Previous Articles     Next Articles

A comparative study on fish scales and Bio-Oss bone powder on osteogenic differentiation of bone marrow mesenchymal stem cells and bone regeneration in vivo

WANG Xiaolei1, SU Chang2, ZHOU Zhongzheng3, QIN Di4, HUI Guangyan1, WANG Zhongshan5, WU Guangsheng1()   

  1. Department of Stomatology, Qingdao Special Servicemen Recuperation Center of PLA Navy, Qingdao 266071, China
  • Received:2025-06-16 Online:2026-02-28 Published:2026-03-09

Abstract:

Objective To evaluate and compare the cytotoxicity, osteogenic differentiation potential and cranial defect repair capacity of fish scale (FS) bone powder versus Bio-Oss bone powder. Methods FS bone powder was prepared, with Bio-Oss bone powder as the positive control. The microstructures of both materials were examined by scanning electron microscopy (SEM). Cytotoxicity of Bio-Oss and FS extracts (12.5-200.0 mg/mL) on rat bone marrow mesenchymal stem cells (BMSCs) was assessed using live/dead cll staining and CCK-8 assays. BMSCs were co-cultured with Bio-Oss and FS powder and osteogenic gene expression (ALP, RUNX2, OPN) was detected by RT-PCR. Osteogenic mineralization capacity was observed by alizarin red staining. Bio-Oss and FS powder was implanted into rat calvarial critical-sized defects. The bone regeneration was analyzed at 8 weeks post-surgery using Micro-CT, hematoxylin-eosin (HE), and Masson’s trichrome staining. Results FS bone powder particles ranged from 200 to 800 μm in diameter, featuring a corrugated front surface, a relatively smooth back surface, and an irregular morphology. Both Bio-Oss and FS extracts showed no cytotoxicity at concentrations ≤50 mg/mL. Bio-Oss and FS significantly promoted the formation of calcified nodules and upregulated osteogenic genes (ALP, RUNX2, OPN)(P<0.05), with FS exhibiting higher RUNX2 and OPN expression than Bio-Oss (P<0.05). Micro-CT analysis revealed that both the Bio-Oss and FS groups exhibited significantly higher bone volume/tissue volume (BV/TV) (P<0.05). Histological analysis with HE and Masson’s trichrome staining demonstrated greater bone regeneration in both the Bio-Oss and FS groups. Conclusion FS demonstrates excellent cytocompatibility and osteogenic differentiation capacity, achieving comparable bone regeneration to Bio-Oss in rats, suggesting potential applications in bone tissue engineering.

Key words: fish scale bone powder, Bio-Oss bone powder, osteogenic differentiation, bone regeneration

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