Carlos J. Perec

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Functional studies of the pancreas and parotid glands are reported in 17 patients with amyotrophic lateral sclerosis (ALS). The exocrine function of the pancreas was studied by measuring amylase concentration after stimulation with the endogenous secretin-pancreozymine test (ESP). Under these conditions, the pancreatic amylase concentration in ALS patients(More)
1. Normal, atrophied and denervated submaxillary glands were incubated with [3H]adenine for 1 h. The accumulation of [3H]adenine, expressed as microCi/g tissue, did not differ significantly when the sympathetically denervated glands were compared with the control group. The radioactivity retained in both control and denervated tissues was also similar. 2.(More)
The presence of acetylcholine in aqueous extracts of the fruit of Solanum nigrum Linn. (black nightshade) has been established based upon the following pharmacological tests: a) isotonic contraction of the isolated toad rectus abdominis; b) negative chronotropic and inotropic action on the isolated toad heart; c) isotonic contraction of the isolated guinea(More)
Salivary secretion in response to noradrenaline and isoprenaline was measured in innervated and chronically sympathectomized parotid glands of the rat. In innervated glands, the responses to isoprenaline lasted longer than those to noradrenaline. Chronic sympathetic denervation enhanced the responses to both noradrenaline and isoprenaline. The magnitude of(More)
Die Sublingualisdrüse der Ratte zeigt eine spontane Sekretion, die nach intravenöser Injektion von Adrenalin und Isoprenalin wenig vermehrt wird. Intravenöse Methacholingabe ruft eine auffallende Sekretion hervor. Die geringe Empfindlichkeit gegenüber adrenergischen Substanzen kann z.B. die geringe Drüsenvergrösserung nach Behandlung mit Isoprenalin(More)