[The inhibitive effect of sodium tanshinone II A sulfonic acid on intimal hyperplasia in rabbit iliac artery ballon injury model].

OBJECTIVE

To study the preventive effect of Sodium Tanshinone II A sulfonic acid on intimal hyperplasia in rabbit iliac artery balloon injury model and explore the possible mechanism.

METHODS

Thirty male pure hreed New Zealand white rabbits were undertaken experimental balloon injury in left iliac artery. Then the rabbits were assigned into treatment group (n=15) and control group (n=15), paired with weights. Sodium Tanshinone II A sulfonic acid had been injected intravenously with 7.5 - 9 mg/day for 6 days in treatment group. Saline of equivalence was given in contol group. The balloon injured arteries were harvested in the 7th, 14th, and 28th days after balloon injuy, and Paraffin sections were made. At last, HE staining, apoptosis TUNEL assay were undertaken.

RESULTS

(1) HE staining analysis: Media and intimal areas in treatment group at 14th day post-operation were larger than that in the 7th day (P = 0.003 and < 0.001, respectively). Media and intimal areas in treatment group decreased at the 28th day post-operation, while increased in control. Both media and intimal areas were significantly different (P < 0.001 respectively. (2) Tunel analysis discovered that, apoptosis reached peak in both treatment and control groups at the 28th post-operation. Differences of apoptosis cells counts in media and intimal between treatment and control groups were non-significant at the 7th, and 28th days, while differences at the 14th day were significant(p = 0.031 and 0.029 respectively). Apoptosis cells counting in treatment group at the 14th day increased more dramatically than that in the control.

CONCLUSION

Intravenous Sodium Tanshinone II A sulfonic acid inhibites intimal proliferation after arterial balloon injury in rabits. The effect can e partially explaineArte by the induction of apoptosis in injured artery. Clinical effect of tanshinone II A still needs further evaluation. Sodium TA-II A sulfonic acid may be of potential therapeutic value in the prevention of

OBJECTIVE

To study the preventive effect of Sodium Tanshinone II A sulfonic acid on intimal by perplasia in rabbit iliac artery balloon injury model and explore the possible mechanism.

METHODS

Thirty male pure breed Nexw Zealand white rabbits were un-dertaken experimental balloon injury in left iliac artery. Then the rabbits were assigned into treatment group (n=15) and control group (n=15), paired with weights. Sodium Tanshinone II A sulfonie acid had been injected intraxenously with 7.5 - 9 mg/day for 6 days in treatment group. Saline of equivalence was given in contol group. The balloon injured arteries were harvested in the 7th, 14th, and 28th days after balloon injury, and Paraffin sections were made. At last, HE staining, apoptosis TUNEL assay were undertaken.

RESULTS

(1) HE staining analysis: Media and intimal areas in treatment group at 14th day post-operation were larger than that in the 7th day (P = 0.003 and < 0.001, respectively). Media and intimal areas in treatment group decreased at the 28th day post-operation, while increased in control. Both media and intimal areas were significantly different (P < 0.001 respectively. (2) Tunel analysis discovered that, apoptosis reached peak in both treatment and control groups at the 28th post-operation. Differences of apoptosis cells counts in media and intimal between treatment and control groups were non-significant at the 7th, and 28th days, while differences at the 14th day were significant (p = 0.031 and 0.029 respectively). Apoptosis cells counting in treatment group at the 14th day increased more dramatically than that in the control.

CONCLUSION

Intravenous Sodium Tanshinone II A sulfonic acid inhibites intimal proliferation after arterial balloon injury in rabbits. The effect can he partially explained by the induction of apoptosis in injured artery. Clinical effect of tanshinone II A still needs further evaluation. Sodium TA-II A sulfonic acid may be of potential therapeutic value in the prevention of restenosis after angioplasty.