PubMed · 8647986
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R L Kornberg. 1996. Elastoderma.. https://doi.org/10.1016/s0190-9622(96)90302-3
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BACKGROUND: Clinical features of the skin in persons who smoke include increased wrinkling, gauntness, and discoloration that has been termed smoker's face. The histologic changes in the sun-exposed skin of these patients have not been previously elucidated. OBJECTIVE: The purpose of this study was to assess the amount of elastosis in the sun-exposed skin of smokers and nonsmokers. METHODS: We evaluated the skin from the forehead and cheeks of 17 smokers and 14 nonsmokers for the presence of elastosis. With the use of a computer-generated analysis of tissue sections at 4 different levels, the amount of elastotic material was expressed as an average percent of the field staining for elastic tissue. Patients were also evaluated for the presence of other malignancies, arsenic and radiation exposure, and previous skin cancers. RESULTS: There was a significantly greater amount of elastosis (P < .05) in the skin of patients who smoked compared with those patients who did not. No significant differences were found between the 2 groups with regard to the other parameters evaluated. CONCLUSION: Cigarette smoking is associated with an increase in elastosis, which may contribute to the clinical features of "smoker's face."
BACKGROUND: Investigation of changes in normal veins which result in the formation of varicosis led to examination of the histological organisation of the vessel wall and to histomorphological alterations in the region of the extracellular matrix. PATIENTS AND METHODS: The expression pattern of the matrix proteins collagen IV, fibronectin, laminin, tenascin, and undulin as well as the structure and orientation of elastic fibres were determined by means of immunohistochemical staining. RESULTS: All varices exhibited an increased expression pattern in comparison to healthy veins. The venous vessel wall was often non-homogeneously enlarged. The intima was always more involved than the media and showed enhanced accumulation, whereas, the adventitia was not influenced by the pathological process. Collagen IV exhibited an early accumulation, especially in the subendothelial region. The other matrix proteins demonstrated an increase in fibre propagation parallel to the enlargement of the vessel wall. Essentially, an augmented de novo synthesis of fibres with an irregular arrangement and the formation of local plaques was found. Elastic fibres were enhanced by slight involvement of the vessel wall and were reduced and fragmented during increased involvement of the venous wall which explained the rigidity of varices in contrast to normal veins.
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