Clinicopathological analysis of Three cases with leiomyo-adenomatoid tumor of the uterus / 中国基层医药

Objective To investigate the clinicopathological diagnosis and differential diagnosis of leiomyoadenomatoid tumor of the uterus,to avoid clinical misdiagnosis and mistherapy.Methods The clinical histopathological and immunohistochemical features of 3 cases with leiomyo-adenomatoid tumor of the uterus were retrospectively evaluated,and the literatures were also reviewed.Results After hospitalization,before surgery,uterine smooth muscle tumor was diagnosed in 3 cases,adenomyomas were accompanied diagnosis in 2 cases.Through microscopic patterns of tumor and immunohistochemical staining showed,positive for MC and Calretinin,but negative for CD34,leiomyo-adenomatoid tumor of uterus was diagnosed,so gestrinone was stopped to use.Conclusion Pathological features and immunohistochemistry techniques are useful in establishing a correct diagnosis of leiomyo-adenomatoid tumor of the uterus,and avoiding misdiagnosis and mistherapy.

An experimental study on the influence of inhibition of postburn stress on inflammatory reaction in severely scalded rats / 中华烧伤杂志

<p><b>OBJECTIVE</b>To investigate the influence of hibernation drugs on postburn stress and inflammatory reaction in severely scalded rats.</p><p><b>METHODS</b>Sprague-Dawley rats inflicted with 30% TBSA deep partial thickness scalding were employed as the model. The rats were divided into A (scalding with immediate resuscitation), B (scalding with immediate resuscitation and lytic cocktail), C (scalding with delayed resuscitation), D (scalding with delayed resuscitation and lytic cocktail) and E (sham injury) groups. The rat plasma levels of NE (norepinephrine), E (epinephrine) and DA (dopamine) were determined by HPLC (high performance liquid chromatography) at 3, 6, 12, 24 and 48 postburn hours (PBHs), and the plasma IL-1alpha and PGE(2) levels were detected by ELISA (enzyme-linked immunosorbent assay) and RIA (radioimmunoassay) methods. The NF-kappaB activity in PBMCs (peripheral blood mononuclear cells) was determined by laser scanning confocal microscope.</p><p><b>RESULTS</b>The plasma NE and E levels reached summit at 6 PBH, while those in B group were lowest. But the plasma DA level was similar among all groups at all time points. The plasma IL-1alpha and PGE(2) levels increased continuously, however, the levels were were lower in B than A groups at the same time points, and also that of D were lower than C groups. At the same time points, the levels in B group were lower than those in D group. The NF-kappaB was located in the cytoplasma of PBMCs in E group and in the nucleus in A group at 6 PBH. Furthermore, the NF-kappaB was concentrated more in the cytoplasm than that in the nucleus in B group, while it was more concentrated in the nucleus in C and D groups.</p><p><b>CONCLUSION</b>The secretion of stress hormones could be attenuated by hibernation drugs. The plasma cytokine levels and the nuclear translocation of NF-kappaB in PBMCs could also be modulated by the drugs.</p>

An observation of the basement membrane remodeling after the combined grafting of xenogenic acellular dermal matrix with autoskin in rats / 中华烧伤杂志

<p><b>OBJECTIVE</b>To observe the dynamic process of basement membrane remodeling after the combined grafting of xenogenic acellular dermal matrix with autoskin.</p><p><b>METHODS</b>The rat skin wounds were covered with xenogenic porcine acellular dermal matrix overlaid with razor thin autoskin. The skin samples were collected at 1, 2, 3, 4, 8, 12 and 16 post-grafting weeks. The changes in laminin expression in the basement membrane and the ultrastructure of the basement membrane at 12 post-grafting weeks were observed by immunohistochemistry and transmission electron microscopy. The results were compared with those in simple thin autoskin grafting as the control.</p><p><b>RESULTS</b>The laminin expression in the combined grafting was higher than that in control. At 12 post-grafting weeks, the basement membrane in combined grafting rats was clear and continuous and the hemidesmosome was relatively more in amount and distributed evenly. While in the autoskin group, the lamina densa in the basement membrane was blurred and discontinuous with a decrease in and uneven distribution of hemidesmosome.</p><p><b>CONCLUSION</b>The increased expression of laminin in the basement membrane in the combined grafting rats might be beneficial to the remodeling of the basement membrane and to strengthening the connection of epithelium to the dermis, thus wound healing quality would be improved.</p>

Experimental study on the inflammatory and immune responses of xenogenic acellular dermal matrix transplantation combined with thin split-thickness skin autograft / 中华整形外科杂志

<p><b>OBJECTIVE</b>To investigate the dynamic process of the inflammatory response and the profile of Th1/Th2 cytokines after xenogenic acellular dermal matrix (ADM) transplantation with thin split-thickness skin autograft overlay.</p><p><b>METHODS</b>SD rats were used in the study. In the control group, thin split-thickness skin autograft (STSG) was transplanted in the full-thickness skin defect of the SD rats; in the experimental group, the xenogenic acellular dermal matrix combined with thin split-thickness skin autograft was transplanted. The inflammatory response was examined histologically and Th1/Th2 cytokine mRNA expression in skin grafts was determined by reverse transcription-polymerase chain reaction.</p><p><b>RESULTS</b>Inflammatory reaction was induced by ADM at the early stage of transplantation and decreased gradually. Th2 cytokine mRNA expression was higher in the ADM group than that of the control group whereas the Th1 cytokine mRNA expression was undetected in both groups.</p><p><b>CONCLUSION</b>Xenogenic acellular dermal matrix is immunogenic. The increased expression of Th2 cytokines may be related to the humoral immune responses and the absence of ADM graft rejection.</p>