The myocardial nutrition after myocardial revascu-larization was studied in 14 rabbits with the aid of Nd-YAG laser, before Ligation of the anterior descending branch of the left coronary artery (only ligated LAD in 4 rabbit), the rabbits were seperatively Killed 3 or 5 weekafter operating. Myocardial samples were abtained in the parti of 0 - 2,2 - 4,4 - 6mm from laser hole. Sample numbers were 30 in myocardial revascularization group (MRG); 20 in myocardial Infarction group(MIG); 20 in normal group (NG). Amount of ATP and CP in myocar-dia were determined with luciferase. Resalts.ATP and CP near laser holes were normal 3 week late. This far from laser holes was lower than that of normal myocardia 5 week late. Recover of CP amount was slower than that of ATP amount. Inclusion, myocardial revascularization can play role in myocardial nutrition.

Acute myocardial infarction (AMI) model was made in SD rats by coronary ligation, the effects of naloxone (Nal) on the baroreflex sensitivity (BRS) were evaluated by administrated Nal intravenously (iv) and in-tracisternally (ic) before and after 1 h of AMI.Results showed that both pre and post AMI can Nal potentiate the BRS whether iv or ic. These results indicate that Nal may reverse the blunted BRS after AMI.

rabbits were divided randomly into control group ( n =8),pseudo operation group ( n =8) and chitin group ( n =8) with the rabbit iliac artery restenotic models The chitin tubes were localized on the adventitia of restenotic iliac arteries in chitin group but not in pseudo operation group The determinations for the area of neointima,neointima/media area ratio,neointima/media thickness ratio and 3 H TdR incoperation demenstrate that chitin can inhibit intimal proliferation of restenotic iliac artery This findings suggest that local adventitial chitin administration may be effective for the prevention of restenosis