Richard McAllister

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Endurance exercise training (Ex) has been shown to increase maximal skeletal muscle blood flow. The purpose of this study was to test the hypothesis that increased endothelium-dependent vasodilation is associated with the Ex-induced increase in muscle blood flow. Furthermore, we hypothesized that enhanced endothelium-dependent dilation is confined to(More)
The molecular weights, subunit compositions, and secondary structure patterns of the RNAs from an endogenous baboon virus and from a woolly monkey sarcoma virus were examined and compared to the properties of the RNA of RD-114, an endogenous feline virus. The high molecular weight RNA extracted from each of these three viruses has a sedimentation(More)
Thyroid disease has profound effects on cardiovascular function. Hypo- and hyperthyroidism, for example, are associated with reduced and increased maximal endothelium-dependent vasodilation respectively. We therefore hypothesized that the capacity for vascular nitric oxide (NO) formation is decreased in hypothyroidism and increased in hyperthyroidism. To(More)
ATP could play an important role in skeletal muscle blood flow regulation by inducing vasodilation via purinergic P2 receptors. This study investigated the role of P2 receptors in exercise hyperemia in miniature swine. We measured regional blood flow with radiolabeled-microsphere technique and systemic hemodynamics before and after arterial infusion of the(More)
An ultrastructural and light microscopic study was undertaken to examine the nerves of the accessory pancreatic ducts of the starling (Sturnus vulgaris), previously noted (Vinnicombe, 1982) to have a particularly dense innervation. Large numbers of nerves were found in the ducts, predominantly in the lamina propria, and all contained exclusively(More)
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