Discovery of antidepressant activity by forced swimming test may depend on pre-exposure of rats to a stressful situation.

Antidepressant-induced anti-immobility effects have been assessed in animals exposed or not to a pretest session using the forced swimming test. Desipramine, maprotiline, mianserine (15 and 30 mg/kg), nomifensine (2.5 and 5 mg/kg), d-amphetamine (1 and 2 mg/kg) and muscimol (1 and 2 mg/kg), unlike imipramine (15 and 30 mg/kg), LY-171555 (0.1 and 0.2 mg/kg) and scopolamine (0.5 and 0.1 mg/kg), did not reduce immobility time in rats which had not received the pretest session. On the other hand, all of the drugs tested reduced immobility time in rats exposed to a pretest session. In addition, the degree of antiimmobility effects of desipramine (20 mg/kg) and nomifensine (5 mg/kg) increased proportionally with the level of water (0, 4, 15 and 30 cm) to which animals were exposed at the time of pretest. Furthermore, desipramine reduced immobility time in rats pre-exposed to types of stress different from forced swimming, cold, restraint or foot-shock. All drugs were injected intraperitoneally three times, 24, 5 and 1 h before testing. The present findings suggest that a stressful pretest session may reveal pharmacological properties of antidepressants in the forced swimming test. This is also substantiated by the fact that diazepam (2.5 and 5 mg/kg) administered 30 min before the swimming pretest antagonized the anti-immobility effect of 15 mg/kg desipramine.

The definition of a general practice medical workstation: the ISAAC approach.

Within the principal objective of ISAAC of developing information technology support for the General Practice, the project aims at the definition of a Global Architecture valid for GPs all around Europe. This is achieved with the definition of a Functional Reference Model describing GP's functions. Professionals from the Primary Health Care (PHC) area are extensively involved in the project. Prototypes have been and will be defined to test the project approach in real life conditions. The prototypes test the usability of a local information processing environment and the integration with other components of the Health Care System.

Developing a general practice medical workstation: the integration aspect.

ISAAC (Integrated System Architecture for Advanced Primary Care) is a project aiming at developing information technology and telematic support in the specific field of General Practice--and more broadly in the Primary Health Care sector--within the health care systems of different European Countries. The project aims at improving the work of the General Practitioners through the development of a useful and usable medical workstation for day-to-day patient care. Moreover ISAAC has the goal of prototyping an integration architecture for the improvement of the communications between the ISAAC workstation and heterogeneous application environments, namely other components of the health care system. This paper deals with a general description of the design along with a discussion of the adopted approach to fulfill the integration requirements.

Panic attacks with and without agoraphobia: a comparison.

22 patients with panic disorder (PD) were compared with 42 cases suffering from agoraphobia with panic attacks for a number of variables. The two groups did not differ for age, sex ratio, age of onset, social class, severity of nonsituational anxiety and personality profiles. On the other hand agoraphobics showed lower education and worse social adaptation. A higher prevalence of traumatic life events was also observed for agoraphobics compared with subjects suffering from PD.