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• W4316363100 abstract "The aim of this study was to study the morphofunctional changes in human skin with acneiform dermatoses. Material and methods. We studied the material obtained from 6 volunteers of both sexes aged 26 to 64 years. All subjects had signs of acneiform dermatoses. Pathologically changed areas were studied in comparison with normal skin in the same patient. The subjects were anesthetized and a piece of skin 3×3 mm 2 in size was taken with the punch biopsy. After standard histological sample preparation, sections were stained with hematoxylin and eosin. The counting and morphometry of skin cell structures was carried out, the presence of lymphocytes, neutrophils, eosinophils, erythrocytes, vacuolized keratinocytes and their remnants in 6 fields of view in 3 histological slides from each patient was determined from each patient under an Axioskop 2 microscope with a ToupCam TP108500A camera and ToupView software (ToupTek , China). The criterion for the degree of destructive changes in the collagen fibers of the dermis was the determination of their thickness. Results. The morphological structure of the skin in acneiform dermatosis is characterized by a significant increase in the thickness of the spinous (93,7 [82,30; 96,35] microns), granular (28,4 [22,48; 34,44] microns) and corneum (37,8 [25,32; 46,24] microns) layers of the epidermis compared to the norm (66,1 [58,30; 69,42] microns; 6,2 [5,96; 6,63] microns; 10,6 [9,81; 11,26] microns, respectively). Near the sebaceous-follicular complex, inflammatory lymphohistiocytic infiltrates were found in the dermis, represented by lymphocytes (9,5±2,2 units p.f.v.), neutrophils (2,2±0,8 units p.f.v.), eosinophils (17,2±4,0 units p.f.v.), erythrocytes outside the vessels (6,8±1,1 units p.f.v.), vacuolated keratinocytes (22,1±5,7 units p.f.v.) and keratinocyte remnants (15,1±2,4 units p.f.v.) . The number of cells in the infiltrate significantly differed from the norm. On histological preparations of patients with acneiform dermatosis, thinning of the collagen fibers of the dermis (6,0 [4,79; 8,13] microns) was observed compared to unaffected skin (10,4 [10,01; 10,67] microns). Conclusions. Morphological changes in the skin with acneiform dermatosis are manifested by hypertrophic processes of the epidermis, thinning of the collagen fibers of the papillary dermis, the presence of leukocyte infiltrate and a violation of the integrity of the basement membrane of the sebaceous glands. These changes can lead to disruption of the integrity and functioning of the histo-hematic barrier of the skin and an increase in the area of spread of the inflammatory process." @default.
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• W4316363100 date "2023-01-13" @default.
• W4316363100 modified "2023-09-30" @default.
• W4316363100 title "Morphofunctional changes in human skin with acneiform dermatoses" @default.
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• W4316363100 doi "https://doi.org/10.18499/2225-7357-2022-11-4-33-40" @default.
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