Presence of Type 1 Collagen Alpha-2 (COL1A2) (rs42524) Gene Polymorphism and Scar Tissue Formation in Different Areas of Head and Neck

The effect of local anesthetics against planktonic forms and film formation of S. aureus strains and its dependence on antiseptics activity

Today surgical site infections (SSIs) remain the second among hospital acquired infections in Europe and the USA. Staphylococcus aureus as a pathogen of nosocomial infections occur more frequently in surgical hospitals. The work was aimed to establish the effect of local anesthetics against planktonic forms and biofilm-formation of S. aureus clinical strains and the relationship between the sensitivity of S. aureus strains to local anesthetics and antiseptics in vitro. The antimicrobial activity of local anesthetics (0.5%, bupivacaine, 2.0% lidocaine, 0.375% ropivacaine) and antiseptics (decamethoxine 0.02%, chlorhexidine 0.05%) against clinical strains of S. aureus was observed and studied their ability to produce biofilms. The antimicrobial effect of local anesthetics was lower compared to antiseptics, but we observed inhibition of growth and reproduction of S. aureus in their presence. The ropivacaine solution and the lidocaine solution demonstrated almost the same activity against the studied microorganism isolates. Along with this, bupivacaine solution had the highest activity against the studied microorganisms. The minimal inhibitory concentration of bupivacaine for S. aureus was 2.2 times lower than the minimal inhibitory concentration of lidocaine and 2.1 times lower than the minimal inhibitory concentration of ropivacaine significantly (p < 0.05). Scientific research on various aspects of the formation of bacterial biofilms is a relevant area that will change approaches to the prophylaxis and treatment of a number of infections, including SSIs.

DIFFERENTIAL-DIAGNOSTIC INFORMATIVENESS OF THE MORPHOLOGICAL AND IMMUNOHISTOCHEMICAL STUDY OF PAROTID SALIVARY GLAND CYSTS

OBJECTIVE

The aim: To conduct a general analysis of the results of the study of the morphological and immunohistochemical structure of cysts of the parotid salivary glands.

PATIENTS AND METHODS

Materials and methods: Our study is based on the application of generally accepted, additional and special methods of examination, which concerns 21 patients who underwent surgical intervention to remove cystic formations of the parotid salivary gland.

RESULTS

Results: It was established that there are 2-3 HLA-DR+ cells per 100 epithelial cells located in the basal and subbasal layers in the form of their continuous ribbon and their moderate infiltration of tissues within the acinar epithelium. In the epithelium, CD3+ cells were also detected in the number of 1 to 7 per 100 epitheliocytes and they were the most numerous, along with HLA-DR+ cells. Instead, the presence of CD4+ and CD20+ cells was not detected in the epithelium, unlike the subepithelial layer, where they occupied significant areas. In turn, the infiltration of CD8+ cells of the epithelial layer was established in the amount from 1 to 7 per 100 epitheliocytes. A moderate number of them was also determined subepithelially, and they were single directly in the cyst wall.

CONCLUSION

Conclusions: Immunohistochemical study of the structural components of cystic formations is this is the direct way to establish the nature of the redistribution of immune cells in it, which is very important when conducting differential diagnosis in difficult and doubtful cases.

CCL2/MCP-1 serum chemokine level in patients with odontogenic infectious and inflammatory diseases of the soft tissues of the maxillofacial area and mediastinum

Aim. The paper was aimed at determining the CCL2/MCP-1 level in patients with odontogenic infectious and inflammatory diseases of soft tissues of the maxillofacial area and mediastinum. Methods. The study involved 46 patients with odontogenic infectious and inflammatory diseases of soft tissues of the maxillofacial area and 12 healthy volunteers. The level of patients' plasma CCL2/MCP-1 level was determined using a kit for specific ELISA. Results. The findings of the studies showed a statistically significant increase in the concentration of plasma CCL2/MCP-1 in patients of all study groups. Our study shows a significant increase in plasma CCL2/MCP-1 level in patients with odontogenic phlegmonas, abscesses and mediastinitis, compared to the group of healthy subjects. Conclusion. CCL2/MCP-1 may play an important role in the pathogenesis of odontogenic infectious and inflammatory diseases of soft tissues of the maxillofacial area and mediastinum, which requires a careful follow-up study.