The hemorphins are opioid active peptides, which are enzymatically released from the beta-chain of hemoglobin. In this paper we report an inhibitory effect of these peptides on angiotensin converting enzyme (ACE) activity, known to be involved in blood pressure regulation. The hemorphins were found to be quite stable in tissue extracts containing ACE, and their importance as naturally occurring ACE inhibitors is discussed.
BackgroundIn the education of professionals in psychiatry, one challenge is to provide clinical placements with opportunities for students to interact and have direct contact with patients. The aim of this study was to explore Swedish psychiatric patients’ perspectives on student participation in their care.MethodIn a cross-sectional survey design, 655 adult psychiatric patients at a university hospital completed questionnaires. These questionnaires included statements about student involvement, student gender, attitudes towards student participation as well as two open-ended questions. Data were analyzed quantitatively and qualitatively.ResultsThe majority of the patients were comfortable with student participation. There were no differences between patients in wards compared to outpatients but patients who previously had students involved in their care reported higher comfort levels and a more positive attitude. Female patients were less comfortable with male students and very young students. Patients stressed the importance of being informed about the opportunity to refuse student participation. More detailed information given before the consultation as well as the importance of the student showing a professional attitude was conditions that could enable more patients to endorse student participation.ConclusionThe psychiatric patients’ overall positive attitudes are in line with previous findings from other specialties and countries. The results support both altruistic motives and experience of personal gains by student involvement. More detailed information given beforehand would enable more patients to consider student participation.
The metabolism of enkephalin peptides was studied in human cerebrospinal fluid. The degradation rates of (Leu)-enkephalin and (Leu)-enkephalin-Arg6 were compared and the latter was degraded at a IO-fold higher rate. The major enzyme activity was investigated by M, determination and inhibition experiments, showing marked similarity with angiotensin-converting enzyme.(Cerebrospinalfluid) Enkephalin peptide Degradation rate Enzyme inhibitor HPLC Angiotensin-converting enzyme
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