Du-Xin Qing

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Activity of potassium (K(+)) channels plays a key role in regulating arterial tone and therefore blood flow. But little is known about the roles of K(+) channels in the coronary arterioles. The aim of the present study was to investigate the influences of several potassium channel blockers on resting vascular tone in isolated rat coronary arteriole. The(More)
Salvia miltiorrhiza has been widely used in the treatment of various cardiovascular diseases due to its ability to improve coronary microcirculation and increase coronary blood flow. Tanshinone II(A), the major active lipophilic ingredient responsible for the beneficial actions of Salvia miltiorrhiza, was shown to induce vasodilation in coronary arteries.(More)
Age-associated changes in large blood vessels were characterized by increased arterial wall thickness, luminal dilation and impaired endothelial function. But little is known about the effect of age on structural and functional changes in small resistance arteries. The mechanisms underlying age-associated endothelial dysfunction in rat mesenteric resistance(More)
Experiments were performed on 18 rabbits, bivagotomized, gallamine triethiodide immobilized and artificially ventilated. The effects of electrical stimulation of "renzhong" (Du 26) area and NPBM, separately and simultaneously, on arterial blood pressure and heart rate were observed before and after electrolytic or chemical lesion of NPBM. Electrical(More)
Experiments were performed on 27 rabbits, bivagotomized, gallamine triethiodide immobilized and artificially ventilated. The effects of electric stimulation of "Renzhong" (Du26) area, NPBM separately, and "Renzhong" area and nucleus parabrachialis medialis (NPBM) simultaneously, on phrenic nerve discharge were observed before and after electolytic and(More)
Experiments were performed on 14 rabbits locally anesthetized with procaine. Both vagus nerves were cut. The animals were immobilized with gallamine trithiodide and maintained by artificial ventilation. The effects of electrical stimulation of "Renzhong" area on arterial blood pressure and heart rate were observed before and after microinjection of kainic(More)
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