[Expression of A-type atrial natriuretic peptide receptor in the kidneys of renovascular hypertension rats and its implication].

Objective: To investigate the expression of A-type atrial natriuretic peptide receptor (ANPR-A) in the kidneys of renovascular hypertension rats and evaluate the significance of the expression.

Methods: The rat model of renovascular hypertension was produced by constricting one lateral renal artery. After the renal artery being constricted for 4 weeks and 8 weeks, the systolic BP of rats was measured with a manometer using the tail-cuff method.

[The influence on hemodynamics of myocardial ischemic dogs and blood pressure of animals with shenfu injection].

Objective: To investigate the influence of Shenfu injection on the hemodynamic indexes of myocardial ischemic dogs and blood pressure of dogs and rats.

Method: Myocardial ischemic model was made and hypotension in the dogs was induced with ligating left front descending limb coronary artery method, and secondary hypertension by narrowing nephridium artery of rats, Shenfu injection was administered with 5, 10 mL.kg-1 to the above dogs and rats separately to investigate the influence of it on the hemodynamic indexes of myocardial ischemic dogs and blood pressure of rats.

[Effects of Ca2+ and Mg2+ on the enzymatic properties of cardiac muscle myosin].

Objective. To study the influence of Ca2+ and Mg2+ on the enzymatic properties of cardiac muscle myosin. Method.