Antinociceptive Effect of Intrathecal Injection of Genetically Engineered Human Bone Marrow Stem Cells Expressing the Human Proenkephalin Gene in a Rat Model of Bone Cancer Pain

Table 2

Cell activity after freezing and recovering (%, ).

Cell type	hBMSC P3	pBABE-hBMSC	hPPE-hBMSC	value	value
Number ()	5	5	5	—	—
Living cell rate (%)	89.90 ± 3.20	87.30 ± 3.26	88.08 ± 2.20	1.033	0.386

There were no significant differences among the three groups (P > 0.05), indicating that transfection had no effect on the morphology and proliferation of these cells. hPPE, human proenkephalin; hBMSC, human bone marrow stem cell; pBABE-hBMSC, the pBABE-hBMSC group; hPPE-hBMSC, the hPPE-hBMSC group.