Evaluation of Antibacterial Effect against Porphyromonas gingivalis and Biocompatibility of Essential Oil Extracted from the Gum of Pistacia atlantica Kurdica
Figure 4
Light micrograph sections of cutaneous wound site at one week after wounding in different groups. (a)–(c) In the control group the wound did not close completely and the wound surface covered with scab and necrotic debris, marked infiltration of neutrophils (yellow star and black arrows) in the dermis with loss of matrix and disorganized collagen fibers (red head arrows, the proliferation of fibroblast as indicated by yellow head arrows). (d)–(f) Light micrograph sections in the tetracycline-treated group showed clear line of demarcation (black dash line); the fibrin and PMN cells bridged the whole incision, moderate infiltration of inflammatory cells in dermis and hypodermis (black arrows) with the proliferation of fibroblast and newly unorganized collagen formation. (g)–(i) In the Pistacia atlantica Kurdica gum oil treated group the incised wound closed completely; the fibrin and PMN cells bridged the whole incision with necrotic debris in the surface, moderate infiltration of inflammatory cells in dermis and hypodermis, with angiogenesis as indicated by black arrows with the proliferation of fibroblast (yellow head arrows) and new collagen formation as indicated by black arrows (H&E stain, scale bar 100 μm, scale bar 50 μm, and scale bar 20 μm).