The conducted cytological studies of the wound surface in the dynamics of the ongoing traditional treatment in patients with purulent-inflammatory diseases of soft tissues on the background of diabetes mellitus showed a picture with background fatty-protein detritus, which proceeded with dystrophic and necrobiotic changes in tissue elements (Fig. 1). Combinations of this type of change with the presence of inflammatory cells were often noted. Tissue elements were subjected to destructive and necrobiotic changes under the action of microorganisms and the inflammatory process. These changes are known as vacuolization, loosening, and homogenization of nuclear cytoplasmic structures.16
On the part of histiocytic cells, cell activation was detected in the form of an expansion of the volume of the cytoplasm and hyperchromasia of the nuclei (Fig. 2). In the early stages of the course of the purulent-inflammatory process, polynuclear leukocytes predominated in the cytological material (Fig. 3), and in later periods - leukocyte infiltration of histiocytic and lymphoid cells (Fig. 4).
In the case when weakly colored suspension protein substances were found among the cellular elements, this fact indicated the presence of necrosis.17 Also, extracellular granules and clumps of structureless masses of detritus of various sizes were visible in the preparations. Detritus had a grayish tint due to its protein origin. A yellowish hue indicated the presence of a necrotic substance of a fatty-lipoid nature. The nature of the detritus and protein mass in the composition of the cytological preparation determined the type of bacteria. In the presence of structureless masses of lipid nature, the infection was caused by gram-positive cocci, which were coated on the outside with a liposaccharide membrane.
In a number of cases, the protein mass predominated in the cytological imprint in the composition of the detritus. This variant of the lesion was caused by gram-negative microorganisms. They had a glycoprotein outer shell. The results of microscopic examination showed that the nature of the purulent-inflammatory wound of soft tissues determined the cellular composition of the inflammatory infiltration.18
In the early stages of the disease, polynuclear granular leukocytes were found on cytological preparations. Moreover, they had different shapes and sizes, their nuclear structures were often stained with a hyperchromic color, swollen with a thickening of the nuclear bridges between the chromatin segments. There were granulocytes with karyolytic and karyorectic changes in nuclear structures. Sometimes the chromatin substance of the nuclei was in a state of dispersion and decay (Fig. 5).
The cytoplasm of polynuclear leukocytes was also swollen, expanded in volume, the granular material was often in a state of activation in the form of rupture and dissolution or outflow into the surrounding space. In the cytoplasm of neutrophilic leukocytes, phagocytosed bodies were found (Fig. 6).
In some cases, when the presence of mixed flora was found in cytological preparations, and the presence of single eosinophilic leukocytes among granular leukocytes, in this case it was stated that autoimmune processes were associated with inflammatory diseases.
The results of microscopic studies of cytological preparations of smears-prints from purulent-inflammatory wounds of soft tissues in the dynamics of treatment of patients in the main group showed that, compared with the control group of patients, the degree of dystrophic-destructive and necrobiotic changes in histiocytic and inflammatory cells significantly decreases in the smear. On the part of histiocytic cells, some activation is noted in the form of an expansion of the volume of the cytoplasm and hyperchromasia of the nuclei. In such cases, the morphological state of inflammatory cells changes depending on the treatment.19
On the 1st day of treatment in the cytological material there was a decrease in the number of polynuclear leukocytes (Fig. 7). Among the cellular elements, weakly colored suspension protein substances were sometimes found, which indicates a decrease in dystrophic and destructive changes on the part of tissue-cellular structures and inflammatory cells. The presence of a grayish hue often predominated in the composition of the detritus, which proved an increase in the release of substances of a protein nature; if the detritus has a yellowish tint, then the necrotic substance is of a fatty-lipoid nature.20
As part of the leukocyte infiltration, monocyte-macrophage cells appeared, in some of them phagocytic activity was noted in the form of the presence of relatively small phagocytosed dark particles in the cytoplasm of macrophages (Fig. 8).
On the 3rd day, a decrease in the activity of the processes of alteration and exudation of inflammation was noted (Fig. 9). Morphologically, this was manifested by a decrease in the amount of inflammatory mucosa and necrotic-fibrinous mass, existing leukocytes in a state of destruction and disintegration, which morphologically looked like an irregularly shaped destructive mass stained with eosin.
By the 3rd day of treatment in cytological preparations, the disappearance of phenomena characteristic of the alterative and exudative phases of inflammation was noted. A significant increase in the number of neutrophilic leukocytes, which are in active form, was determined in the form of hyperchromasia and polysegmentation of nuclear structures (Fig. 10).
Among them, the appearance of lymphoid and monocytic cells was noted (Fig. 11). Polynuclear granular leukocytes had different shapes and sizes, their nuclear structures were often stained hyperchromically, swollen, with thickening of the nuclear bridges between the chromatin segments. Granulocytes with karyolytic and karyorectic changes in nuclear structures were almost not detected.
The cytoplasm of polynuclear leukocytes was swollen, expanded in volume, and often contained a large number of phagocytosed microorganisms. Often, lymphoid, and histiocytic cells are found in the inflammatory infiltration.21 In such cases, we can say that the course of the wound process has a favorable picture. This was associated with the final proliferative stage. In such cases, in cytological preparations, the number of microorganisms was sharply reduced, and they were located mainly in the vicinity of macrophages and lymphohistiocytic cells. The above cytological changes were also accompanied by an increase in the number of macrophages with increased signs of phagocytosis in the composition of the cellular infiltration (Fig. 12).
On the 7th day of treatment, smears were dominated by the number of polynuclear leukocytes, in particular neutrophilic leukocytes, which, being in an active state, densely surrounded layers of tissue detritus with microorganisms. Eosinophilic staining of the cytoplasm of most of the neutrophilic leukocytes indicated their enzymatic and phagocytic activity (Fig. 13).
During this period of the study, there were also single eosinophils and basophils among leukocytes. Histiocytic cells were even more enlarged due to the increase in dystrophic changes in the cytoplasm. Most of them had large, flattened dimensions with an increase in eosinophilic staining of both the nucleus and the cytoplasm.