A pharmaceutical composition which comprises a pharmaceutically acceptable carrier together with an in vivo fibrinolytic enzyme as defined herein wherein the catalytic site essential for fibrinolytic activity is blocked by a group which is removable by hydrolysis at a rate such that the pseudo-first order rate constant for hydrolysis is in the range 10.sup.-6 sec.sup.-1 to 10.sup.-3 sec.sup.-1 in isotonic aqueous media at pH 7.4 at 37.degree. C.; is useful in the treatment of venous thrombosis.
一种药物组合物,包括一种体内纤溶酶和一种药学上可接受的载体,所述纤溶酶的催化活性所必需的催化位点被一种可通过
水解去除的基团阻塞,其在等渗pH 7.4的
水溶介质中37°C下的伪一级速率常数在10^-6 sec^-1到10^-3 sec^-1范围内;用于治疗静脉血栓。