The demonstration of tryptamine in regional perfusates of the dog brain.
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Multiple regression analysis was conducted on potential response predictors in a double-blind study of monoamine oxidase inhibitors (MAOI) and placebo treatment in 130 depressed outpatients. Positive main effects were found for sex (female), lack of prior hospitalization, presence of precipitating events. A negative main effect was found for concurrent physical illness. Treatment x predictor effects were found for distinct quality and non-reactivity. Non-reactivity was associated with positive outcome in the active drug group, but with negative outcome in the placebo group [corrected]. Distinct quality demonstrated a more complex effect, its presence being associated with decreased improvement in the treatment group and greater improvement in the control group. No atypical depressive symptoms predicted MAOI response, and we were unable to characterize a specifically responsive MAOI syndrome.
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Six self-rated items of interpersonal sensitivity (IPS) were examined in 174 depressed outpatients. These items were "feeling critical of others," "your feelings being easily hurt," "feeling others do not understand you or are unsympathetic," "feeling others are unfriendly," "feeling inferior to others," "feeling shy or uneasy with the opposite sex." The population was grouped into tertiles based on their pretreatment IPS score. High levels of IPS were associated with earlier onset and greater chronicity of depression, higher Hamilton Rating Scale for Depression (HRSD) score, more severe depressed mood, guilt, suicidality, impaired work and interest, retardation, depersonalization, paranoia, and cognitive symptoms of depression. More frequent atypical features were found, e.g., overeating/weight gain, self-pity, phobic avoidance, and panic attacks. Response to a monoamine oxidase (MAO) inhibitor drug increased at higher levels of IPS, while the response to a placebo decreased.
Pathologic hair-pulling (trichotillomania) has been described in the dermatologic and psychiatric literature for the last century, but has become the focus of increased attention in the last few years. Once thought to be either a wholly benign condition or a symptom of obsessive-compulsive disorder, more recently hair-pulling has been noted in the context of numerous types of psychopathology, and has been reported to respond to several different types of intervention, both psychological and somatic. Estimates of its prevalence have varied widely. Because of the disparate conclusions of the literature on this condition, a more careful assessment of diagnostic validity is recommended.