Louis Lamarche

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OBJECTIVE To determine the implication of the sympathetic nervous system in the relationship observed between insulin resistance and hypertension. DESIGN Rats were chronically treated with insulin for 12 days by subcutaneously implanted osmotic pumps and given 10% glucose in their drinking water. A separate group of rats also received glucose only, and(More)
The present study was designed to investigate the functional implication of hepatic afferent nerves in controlling adrenal medullary counterregulatory response to insulin-induced hypoglycemia in anesthetized dogs subjected to an acute surgical denervation of the liver. Aortic glucose concentration decreased similarly in the groups of dogs with hepatic(More)
The goal of the present study was to characterize the adrenal catecholamine response to exogenous vasoactive intestinal peptide (VIP) in anesthetized dogs. We studied the potential involvement of mechanism(s) mediated by muscarinic receptors, L-type Ca2+ channels, VIP-ergic receptors, or pituitary adenylate cyclase-activating peptide (PACAP) receptors. The(More)
The present study was designed to investigate adrenal medullary responses to a selective regional hypoglycemia in the liver of dogs with hepatic cross-perfusion. The liver of recipient dogs (Rc) was perfused with vena caval and aortic blood of donor dogs (Dn) through the portal vein and hepatic artery, respectively. Total hepatic venous blood of Rc was(More)
Adrenal medullary secretory function of the right innervated gland was simultaneously compared with that of contralateral acutely denervated gland in anesthetized dogs. During bilateral carotid artery occlusion (BCO), output (in ng/min) from right innervated gland of epinephrine and norepinephrine increased from 86.6 +/- 33.0 and 34.4 +/- 15.1 to 280.8 +/-(More)
<i>Interactors</i> is a run-time environment for embedded real-time software, which adds concurrency to the C++ object-oriented language. <i>Interactors</i> allows sequential processes to interact synchronously or asynchronously, and provides user-definable multiparty interactions. Several forms of selective wait, inspired by Ada, are provided. Scheduling(More)
The present study tested the hypothesis that a humoral control mechanism is involved in the enhanced adrenal catecholamine secretion during insulin-induced hypoglycemia. The experiments were carried out in anesthetized dogs in which neuronal and humoral components were simultaneously determined by measuring catecholamine output from the right innervated and(More)
The effects of TA-3090 (clentiazem) and nifedipine on basal sympathoadrenal activity and on the adrenal medullary response during splanchnic nerve stimulation were studied in dogs anesthetized with sodium pentobarbital. Plasma concentrations of epinephrine and norepinephrine were measured in aortic and adrenal venous blood before and after acute(More)
Ground-Coupled Heat Pumps (GCHP) are among the most efficient systems to heat and cool buildings. The high initial cost of these systems has hindered their growth in particular for residential applications. Better design methods are welcome to try to optimize the size and then the initial cost of these systems. In the field of ground heat exchanger design,(More)
The present study was conducted to investigate adrenal medullary response to cross perfusion of the liver in postabsorptive anesthetized dogs. The liver of the first dog (recipient) was perfused with vena caval and aortic blood of the second dog (donor) through the portal vein and hepatic artery, respectively. Hepatic venous blood was returned to the donor(More)
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