Tricyclic antidepressants: therapeutic properties and affinity for alpha-noradrenergic receptor binding sites in the brain

Tricyclic antidepressants vary in their capacity to cause psychomotor activation, to relieve agitated depressive states, and to cause sedation and hypotension. We have quantified relative potencies of tricyclic antidepressants in competing for the binding of 3H-labeled WB-4101 to alpha-noradrenergic receptor sites in rat brain membranes. Affinities of tricyclic drugs for alpha-noradrenergic receptor sites in the brain correlate well with the capacity of these agents to relieve psychomotor agitation and to induce sedation and hypotension; these affinities also correlate inversely with tendencies to elicit psychomotor activation.

Cataract: current concepts, signs, and symptomatology -- Part II

This is the second portion of a two part series presented with the purpose of providing the optometrist with an overview of lens structure, cataract formation, classification, and ensuing clinical implications. Part II deals primarily with the clinical signs and symptomatology as encountered during the optometric examination. Each section of a general visual examination is presented in an attempt to demonstrate how cataracts of various types might influence test results. Some suggestions are presented for modification of optometric testing procedures along with some auxiliary procedures which may be utilized in evaluating the cataract patient.

Modification of the M2 Tide due to Barriers in the Bay of Fundy

The one-dimensional channel equations with linear bottom friction are integrated numerically to determine the modification of the M2 tide for several cases of barriers in the bay. The barriers are treated as "complete barriers" in the sense that no flow is permitted through them.