血小板源性生长因子BB对体外培养肌腱细胞增殖的影响

Objective To study the effect of platelet-derived growth factor-BB (PDGF-BB) in dif-ferent concentrations on proliferation of tendon cells cultured in vitro. Methods Rat tendon cells were cultured and identified in vitro. The rat tendon cells were cultured in PDGF-BB nutrient solution in different concentrations. They were then divided into 1, 5, 10, 20, 50, 100, 150, 200, 250 ng/mL PDGF-BB groups (cultured with 0.1 mL 0.5% PBS with addition of 1, 5, 10, 20, 50, 100, 150, 200, 250 ng/mL PDGF-BB respectively). Tendon cells in control group were cultured with 0.1 mL 0.5% FBS. Proliferation of tendon cells was detected by MTT test. The absorbance values of tendon cells in control group and 20 ng/mL PDGF-BB group before culture and after cultured for 12, 24, 36, 48, 60, 72 hs were determined. Results The isolated cells were identified to be rat tendon cells as they were Type Ⅰ collagen staining posi-tive and Type Ⅲ collagen staining negative. Compared with that of control group, the absorbance values of other groups were all increased, except for that of 250 ng/mL PDGF-BB group (P<0.05 or P<0.01). Besides, the absorbance value rose gradually with the increase of the concentration of PDGF-BB on, and then diminished gradually with the increase of the concentration of PDGF-BB from 20 ng/mL on. Tendon cells in 20 ng/ml PDGF-BB group began to increase in number when cultured for 12 hs, and it reached the highest level (0.53±0.04) at 48 h, which were obviously higher than those of control group at 24-72 h (P<0.01). The absorbance value of tendon cells in 20 ng/mL PDGF-BB group was significantly higher than that of control group at 24, 36, 48, 60, 72 h after culture (P<0.01 ). Conclusions PDGF-BB can promote the proliferation of tendon cells in a definite range of concentration and time.

Effect of platelet-derived growth factor-BB on proliferation of tendon cells cultured in vitro

Objective To study the effect of platelet-derived growth factor-BB (PDGF-BB) in dif-ferent concentrations on proliferation of tendon cells cultured in vitro. Methods Rat tendon cells were cultured and identified in vitro. The rat tendon cells were cultured in PDGF-BB nutrient solution in different concentrations. They were then divided into 1, 5, 10, 20, 50, 100, 150, 200, 250 ng/mL PDGF-BB groups (cultured with 0.1 mL 0.5% PBS with addition of 1, 5, 10, 20, 50, 100, 150, 200, 250 ng/mL PDGF-BB respectively). Tendon cells in control group were cultured with 0.1 mL 0.5% FBS. Proliferation of tendon cells was detected by MTT test. The absorbance values of tendon cells in control group and 20 ng/mL PDGF-BB group before culture and after cultured for 12, 24, 36, 48, 60, 72 hs were determined. Results The isolated cells were identified to be rat tendon cells as they were Type Ⅰ collagen staining posi-tive and Type Ⅲ collagen staining negative. Compared with that of control group, the absorbance values of other groups were all increased, except for that of 250 ng/mL PDGF-BB group (P<0.05 or P<0.01). Besides, the absorbance value rose gradually with the increase of the concentration of PDGF-BB on, and then diminished gradually with the increase of the concentration of PDGF-BB from 20 ng/mL on. Tendon cells in 20 ng/ml PDGF-BB group began to increase in number when cultured for 12 hs, and it reached the highest level (0.53±0.04) at 48 h, which were obviously higher than those of control group at 24-72 h (P<0.01). The absorbance value of tendon cells in 20 ng/mL PDGF-BB group was significantly higher than that of control group at 24, 36, 48, 60, 72 h after culture (P<0.01 ). Conclusions PDGF-BB can promote the proliferation of tendon cells in a definite range of concentration and time.