[Study on acting mechanism of shenqi yiqi drop pill for intervening irido-microangiopathy in diabetic rats].

OBJECTIVE

Use laser confocal microscopy overspeed camera technique and fluorescence albumin labeling to study the acting mechanism of Qishen Yiqi Drop Pill (QYDP) for intervening irido-microangiopathy (IMAP) in diabetic rats.

METHODS

Rat model of diabetes mellitus type 1 (DM1) was established by intraperitoneal injection of streptozocin (STZ). The model rats were randomly divided into three groups, the treatment group, the model group and the control group. At the same time a normal control group was set up. The treatment group was medicated with QYDP (prepared into liquid form), and the control group with Duobeisi liquor (1 g/kg per day) for 10 months. The dynamic state of iris microcirculation in rats was observed using laser confocal microscopy overspeed camera.

RESULTS

Compared with the treatment group, blood flow in iris of model rats was slower significantly (P < 0.01); the fluorescence density and leakage area of inside and outside iris vessels, and the iris vascular diameter were significantly higher in the model group than those in the treatment group (P < 0.01).

CONCLUSION

QYDP has definite effect in improving iris microcirculation, which can accelerate the blood flow, inhibit the abnormal expansion of vessels and improve the increased iris micro-vascular permeability.