Joyce Ngai

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Paired rings of porcine left anterior descending artery, with and without endothelium as determined by thrombin-induced relaxation, were suspended for isometric force measurement in Krebs solution (95% O2-5% CO2). The response to 50 mM KCl was similar in both preparations, averaging 59.3 +/- 2.5 mN/mm2 (n = 28). In the absence of any treatment,(More)
Progressive stenosis of the proximal left anterior descending coronary artery in young pigs was surgically induced over eight weeks and was accompanied by the development of coronary collateral circulation originating from the right coronary artery. The antero-apical left ventricular myocardium dependent on this induced collateral blood supply became(More)
We present an unusual case of a 75-year-old woman, with no significant medical history, presenting with ongoing weight loss and change in bowel habit. Her physical examination and initial blood tests were all normal, and, therefore, radiographic imaging was undertaken. Ultrasound and CT of the abdomen confirmed a gallbladder polyp and a laparoscopic(More)
The effect of diltiazem on the contractile and vascular responses to 2 min of total occlusion and reperfusion was investigated in isolated blood-perfused canine papillary muscle preparations. Diltiazem, in doses (3 and 10 micrograms/min) that increased coronary blood flow but did not change developed tension and maximum rate of tension development (dT/dt)(More)
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