Adrenaline and hydrogen peroxide (H 2 O ) have neuromodulatory functions in the brain, is also formed during reaction of adrenaline. Considerable interest exists developing electrochemical sensors that can detect their levels vivo due to important biochemical roles. Challenges associated with detection adrenaline are oxidation these molecules usually requires highly oxidising potentials (beyond...

In mammals, the roles of liver and skeletal muscle glycogen in adrenaline-induced hyperglycaemia are well known. However, amphibians, there is limited information on relative contribution hyperglycaemia. This study investigated effects adrenaline blood glucose, plasma lactate, liverand role adrenergic receptors common African toad, bufo regularis. One hundred twenty-five adult toads (70-100g) b...

1. The present experiments investigate the effects of phenoxybenzamine and propranolol, singly and in combination, on plasma catecholamine levels in sheep receiving a three-hour adrenaline infusion. 2. Five groups of five anaesthetized sheep were studied for a period of 3 h each. One group acted as a control and received only a saline (0.9% w/v NaCl solution) infusion. A second group received a...

purpose: to compare the morphology and function of corneal enthothelial cell in early postoperative period after phacoemulsification with infusion or bolus intracameral adrenaline. methods: in this prospective randomized study, 71 eyes of 71 patients scheduled for phacoemulsification were randomly assigned to two groups: one group (31 eyes) received bolus intraocular adrenaline at 1/10,000 conc...

Changes in phosphoinositide metabolism were examined in washed rabbit platelets stimulated with 0.5 microM-ADP, 50 microM-adrenaline, or ADP and adrenaline in combination. Adrenaline does not stimulate platelet aggregation when used alone, but does potentiate aggregation stimulated by ADP. In platelets prelabelled with [32P]Pi and [3H]glycerol, adrenaline was found to potentiate the ADP-induced...

Background and Objectives: Dental doctors routinely infiltrate adrenaline combined with lidocaine into the oral mucosa. However, they do not well know the physiological characteristics and mechanisms of contraction induced by adrenaline in the oral maxillofacial artery. We investigated the changes in the intracellular Ca2+ concentration by an adrenaline-induced contraction in the swine lingual ...

In patients with neurocardiogenic syncope, head-up tilt often evokes acute loss of consciousness accompanied by vasodilatation, increased plasma adrenaline and systemic hypotension. Since hypotension increases adrenaline levels and adrenaline can produce skeletal muscle vasodilatation by activating beta2 receptors, adrenaline might induce a positive feedback loop precipitating circulatory colla...

The effect of Adrenaline 0.5 per cent and Guanethidine 2.5 per cent alone and in combination in reducing intraocular pressure in rabbits has been studied. Six rabbits were used and the efficiencies of 5 different dosage protocols was estimated both as intensity and duration of activity. The 5 dosage protocols were Adrenaline alone; Guanethidine alone; Adrenaline and Guanethidine together; Adren...

The effect of catecholamines on basic membrane characteristics (including labeled ionic fluxes) and contractile parameters was followed in current clamp and voltage clamp conditions in intact muscle fibres and internally perfused muscle fibre segments respectively of the crayfish Astacus fluviatilis; i.e. in muscle fibres which spike and activate tension on calcium principle. Both adrenaline an...