[Postischemic swelling of fibroblast nuclei in granulation tissue].
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False positive findings in primary tumor and metastasis diagnostics by FDG-PET due to FDG-uptake in inflammatory foci are documented in literature. The demonstrated case reveals that increased uptake of FDG in activated neutrophile granulocytes and macrophages has to be taken into consideration in therapy control under chemotherapy, too. In a 53 year old patient FDG-PET was performed after chemotherapy of an abdominal Non-Hodgkin lymphoma for evaluation of persistent tumor vitality. The margin of the persisting mass showed increased uptake of glucose. Histology documented a necrotic center surrounded by granulation tissue.
Revital , a product containing 19 amino acids, was applied to experimental deep second degree burns in guinea-pigs for 24 days, in order to assess the effect of this form of hyperalimentation on the healing process. Silver sulphadiazine cream served as the contralateral control standard. Epithelialization was faster in the silver sulphadiazine treated burn wounds, while contraction of both tested wounds proceeded at a similar rate. Revital significantly enhanced the formation of granulation and scar tissue in this burn wound model. These observations indicate that topical wound hyperalimentation promotes granulation tissue formation of experimental deep second degree burns in guinea-pigs.
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Review of the literature shows that numerous authors admit the existence during various inflammatory reactions, and especially in granulation and cicatricial tissues, of peculiar connective tissue cells e.g. modified fibroblast or myofibroblast, with intermediate features between a fibroblast and a smooth muscle cell. Some of the physical and structural characteristics of these tissues would depend on these cells. The ultrastructural features of the cells in human and experimental pathology as well as their connection with the extracellular matrix are recalled.
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