Bistability and symmetry breaking in distributed coupling of counterpropagating beams into nonlinear waveguides.
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Biomedical subjects
U Peschel
Publications and source records attributed to U Peschel.
[Leukocyte-adherence-inhibition reactivity in patients with colorectal and pancreatic cancer (author's transl)].
The immunoreactivity of patients with colorectal or pancreatic cancer was investigated by a modified leukocyte adherence inhibition test (LAI). The microcapillary-LAI-test was easy to practise and measurements had a low intra-assay coefficient of variation. The number of false positive results was low, only 1 of 39 patients with benign disease and not one of 13 healthy volunteers reacted in the presence of colorectal carcinoma extracts. In 43 patients with colorectal cancer 17 of 25 (68%) with Dukes' B & C and 15 of 18 (83%) with Dukes' D cancer were LAI positive. Of the 19 patients with colon polyps 6 positive results were observed, exclusively in case of large villous adenomas, polyposis coli and one polyp with a focal carcinoma. 10 of 11 patients with pancreatic cancer reacted in the test. Leukocytes from patients with limited cancer of other source, when tested with colorectal or pancreatic carcinoma extracts, showed a negative LAI response. However, in case of metastatic diseases some crossreactions were observed, which resulted in false positive tests. Following our results, the LAI test could be of value in the diagnosis of gastrointestinal carcinoma.
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["Interface problems" in medical rehabilitation: development of a brief questionnaire for assessing the need for information and communication among general practitioners].
Against the background of current and future demographic changes the relevance of medical rehabilitation in the German health care system is generally acknowledged. It is a central element of treatment programmes especially for elderly and chronically ill patients. In recent years, problems due to lack of co-operation and communication as well as insufficient links between acute care and rehabilitation treatment have found increasing attention. Previous attempts to increase involvement especially of general practitioners in the rehabilitation process were only slightly successful. In a pilot study conducted by the Rehabilitationswissenschaftlicher Arbeitskreis Schleswig-Holstein a new procedure was tested to increase involvement of general practitioners. A brief questionnaire was attached to the report of discharge of rehabilitation patients and was sent to 130 practitioners. With this questionnaire the general attitude and need for information of the practitioners should be analysed. Knowledge about these variables should help to improve communication and co-operation. The response rate was quite high: about 75% of the contacted practitioners answered the questionnaire. All practitioners described medical rehabilitation as important and also had a quite positive attitude toward the same. Two-thirds of the physicians were interested in more intensive contacts and requested further information.
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