Fluorescence tracing of umbilical cord blood mesenchymal stem cells in transplantation treatment of scalded wound in mice / 国际检验医学杂志

Objective Using the previously established mesenchymal stem cells strain derived from human fetal umbilical cord blood (FUCB-MSCs) to culture then label enhanced green fluorescent protein (EGFP) , and to observe skin repair effects of FUCB-MSCs by GFP tracing after exogenous FUCB-MSCs transplantation on to scald wound models of SCID mice.Methods FUCB-MSCs were labeled GFP by transfection with the recombinant retrovirus containing EGFP gen;The established SCID scald mice model were randomLy divided into 3groups, low dose group, high dose group and control group, 6rats each group, 2wounds each mouse, 12wounds in total, then were tail intravenous injected into 0.2mL 1×106, 0.2mL 2×106 GFP-FUCB-MSCs cells, and same volume of medium respectively.On 9days after transplantation, the sections from scald wound area were observed the expression of GFP under the fluorescence microscope and the others were analyzed by the bright-field microscopy after HE staining, and the area of wound surface and the number of wound cells were compared simultaneously.Results After 48h, expression of EGFP in FUCB-MSCs can be seen under the fluorescence microscope, positive rate of GFP was>80％, and after 6weeks GFP expression is still stable, besides, the positive expression of human GFP can be observed after transplantation and there were no fluorescence decay in transplantation after 3weeks.Compared with the control group, there was a significant difference in wound area and wound cell number in the low and high-dose group (P<0.05) .ConclusionGFP can be used as a tracking marker to label FUCB-MSCs during transplantation treatment.It indicates that exogenous FUCB-MSCs can migrate to the scalded wounds via blood circulation system and continuously participate in the repair through SCID mouse.

Mechanism of Neiyi Kangfu Tablets in treatment of adenomyosis through regulating GPER-Ras-STAT3 signal pathway / 中成药

AIM To study the therapeutic effects of Neiyi Kangfu Tablets (Trionycis Carapax,Ostreae concha,Rhei Radix et Rhizoma,etc.) on adenomyosis and its possible mechanism of action.METHODS The mouse model for adenomyosis was set up by the pituitary allograft,and received the gavage of Neiyi Kangfu Tablets,Dan'e Fukang Decoction (Salviae miltiorrhizae Radix et Rhizoma,Curcumae Rhizoma,Paeoniae Radix rubra,etc.) and gestrinone,respectively,for three months.Western blot,real-time PCR,IHC were used to measure the expression of GPER-Ras-STAT3 in ectopic endometrium and entopic endometrium.RESULTS High doses of Neiyi Kangfu Tablets could significantly lower GPER protein and gene expression;down-regulate the Ras and STAT3 protein expression;reduce the lesion severity score of ectopic tissue morphology.Its curative effect was better than Dan'e Fukang Decoction and gestrinone.CONCLUSION Neiyi Kangfu Tablets may control the development of ectopic lesions by inhibiting the GPER-Ras-STAT3 pathway activity and weakening the production of estrogen.

Minimally invasive treatment of acute deep venous thrombosis in lower extremities caused by mili-tary training / 中华创伤杂志

Objective To evaluate the effect of combined multiple interventional methods in treatment of acute deep venous thrombi (DVT) in lower extremities caused by military training. Meth-ods All 25 patients with DVT were treated with embolectomy by using Fogarty catheter. Of all, three pa-tients were treated only with embolectomy, six underwent embolectomy plus percutaneous transluminal an-gioplasty (PTA), 11 received PTA plus ultrasound ablation and five were implanted with stent-grafts. The clinical results were analyzed retrospectively. Results Based on angiography during operation, the ob-structed iliofemoral vein received complete recanalization in 24 patients, with the perioperative luminal di-ameter ≥71%. Partial recanalization of the entrance of common iliac vein to inferior vena cava was failed in one patient. All 25 patients were followed up for an average 34 months after operation, which showed that 24 patients received satisfactory results with normal military training and that the other one with failed recanalization of vena iliaca still felt swelling pain in lower extremity after training. Conclusion Com-bined multiple interventional methods can remarkably improve the therapeutic effect for DVT caused by military training.