Abnormal of fat metabolisn disorder of free-ion substance of vascoactive and vaso constrictive and such on.There are manifestations of DM and cerebral-embolism.

• 而上述多种因素又有其代谢基础，主要为糖尿病引起的高血糖及高胰岛素血症、脂代谢异常、自由基代谢紊乱、血管舒缩因子的作用等。