Role of L-DOPA in Spinal Nociceptive Reflex Activity: Higher Sensitivity of Aδ Versus C Fibre-Evoked Nociceptive Reflexes to L-DOPA

Role of L-DOPA in spinal nociceptive reflex activity: higher sensitivity of Aδ versus C fibre-evoked nociceptive reflexes to L-DOPA.

The role of L-DOPA in spinal nociceptive reflex activity has been re-evaluated. In high spinal cats, with supraspinal loops being excluded, the onset of reflex facilitation induced by noxious radiant heat is delayed after injection of L-DOPA by 4 to 10 s, i.e. the early component of nociceptive reflex facilitation is blocked, while the late component persisted. Further investigations have shown...

L-dopa

Oleh Hornykiewicz was born in 1926 in Sykhiw, Poland (now Ukraine). In 1951, he received his M.D. degree from the University of Vienna and joined the faculty of his alma mater the same year and has worked there ever since. He also served for twenty years as chairman of the Institute of Biochemical Pharmacology. In 1967, he began a long association with the University of Toronto in Canada and, i...

Reversal of the glabellar reflex in Parkinsonism by L-dopa.

L-Dopa and Behavior

to include the "why" of procedures, but rather presents step-by-step instructions and recipes for the bench technologist. The first of the three sections deals with biochemical identification tests, from acetate utilization to Voges-Proskauer. Each includes descriptions of purpose, principle, mechanisms, equipment and reagents, method, and interpretation. The format is short, lucid, and informa...

Hypotension caused by L-dopa.

In 20 patients with idiopathic Parkinsonism maximum tolerated doses of L-dopa were found to induce a mean reduction in blood pressure (erect systolic) of 19.3 mm.Hg, without any significant change in pulse rate. This hypotension may be due to dopamine, acting on adrenergic nerve endings or on the central nervous system itself.