The result of experimental study of the bladder replacement with the glutaraldehyde-stalized amimia in 10 rabbits is reported. This kind of aminia, as a substitute for the bladder, replaced 1/3 bladder (n=4), 2/3 (n=5) and subtotal bladder (n=1) in rabbits, with observation for 2 weeks (n=4), 5 weeks (n=5), 6 months (n=1) and 30 months (n=1). The result showed that all replacements of the bladders were succesful. The aminia is probably the best biologic material at present for replacement of the bladder

This paper reports an experimental study of the dynamic change of plasma-angiotensin Ⅱ (AgⅢ) level and its significance in 24 rabbits with crush syndrome. The average values of Ag Ⅱ at 24, 48 and 72 hours after the crush experiment were about 5.5 times as before, the increment of Ag Ⅱ at 24 and 48 hours after the crush were significant (P

10.3969/j.issn.2095-4344.2013.25.025

OBJECTIVETo investigate the therapeutic effect of reconstruction of facial defects with frontal expanded flaps bipedicled by superficial temple vessels and supraorbital/supratrochlear neurovascular bundles.

METHODSFrom June 2006 to Mar. 2013, the patients with mostly unilateral facial defects which affected temple area and crossed the facial midline, were treated with frontal expanded flaps. The expanders were implanted at first stage and the expanded frontal flaps were transferred at second stage. At third stage, pedicle division was performed and the pedicle skin tissue was used to repair the residue defect.

RESULTAll the 18 flaps survived completely with satisfactory color and texture. Good results were achieved during the follow-up period of one year.

CONCLUSIONThe bipedicled frontal expanded flap has a reliable blood supply which is very suitable for large facial defect.

Adolescent ; Adult ; Child ; Face ; surgery ; Female ; Humans ; Male ; Reconstructive Surgical Procedures ; methods ; Skin Transplantation ; methods ; Surgical Flaps ; blood supply ; Treatment Outcome ; Young Adult

To establish a sensitive and specific method for simultaneous determination of gestodene, etonogestrel and ethinylestradiol in plasma by LC-MS/MS, plasma samples were extracted and derivatized before injection. An ESI ion source was used and operated in the positive ion mode with multiple reaction monitoring (MRM). Norgestrel was chosen as internal standard and performed on a C18 (100 mm x 2.1 mm, 5 microm) column. The concentrations of gestodene, etonogestrel and ethinylestradiol were measured, using step-gradient mobile phase and step-gradient flow rate. The method was validated over the concentration range of 0.1-20 ng x mL(-1) for gestodene and etonogestrel and 0.01-2 ng x mL(-1) for ethinylestradiol, and showed excellent linearity. The intra- and inter-assay accuracy and precision were below 10.0% and recovery was 93.6%-110.9% over the three concentration levels evaluated. The method was applied in pharmacokinetic study of the compound gestodene patch and the compound etonogestrel patch in rabbits. The LC-MS/MS method was selective, accurate and sensitive, especially the LOQ were 100 pg x mL(-1) for gestodene and etonogestrel and 10 pg x mL(-1) for ethinylestradiol. The method was successfully applied in pharmacokinetic study for contraceptives.

Objective To evaluate the expression of epidermal growth factor-like domain 7 (Egfl7) in atherosclerotic plaques and effects of its small interference RNA (siRNA) on angiogenesis gene expression in human endothelial cell line (HUVEC). MethodsEgfl7 expression in atheroscleroticplaquesweredetectedinhumaniliacarteryandmousearteriaeusing immunohistochemistry and immunofluorescence stainings.The siRNA targeting Egfl7 was transfected into HUVEC by lipofectamine with non-transfected cells and unconcerned siRNA as controls.At 0 h,12 h,24 h and 48 h after intervention,the levels of mRNA and protein of Egf17,vascular endothelial growth factor(VEGF),platelet derived growth factor-A (PDGF-A),platelet derived growth factor-B (PDGF-B),vascular cell adhesion molecule(VCAM) and intercellular adhesion molecule (ICAM)were measured by RT-PCR and Western blotting,respectively. ResultsThe expressions of Egfl7 in human iliac artery and mouse arteriae were increased.The expressions of Egfl7 in HUVEC at the levels of mRNA were[(0.14±0.02),(0.09±0.01),(0.02±0.01)]and the levels of protein[(0.71±0.11),(0.39±0.09),(0.07±0.01)]at 12 h,24 h and 48 h after siRNA intervention,respectively,which were decreased as compared with 0 h intervention [(0.31 ±0.05) and (0.93±0.08) ].Other genes such as VEGF,PDGF-A and PDGF-B were reduced or silenced at the levels of protein and mRNA in HUVEC with siRNA longer interventions(all P＜0.05).ConclusionsThe expression of Egfl7 in atherosclerotic plaques is increased.The siRNA inhibiting Egfl7 gene expression results in silence of other factors involved in angiogenesis.

ObjectiveTo observe the clinical efficacy of hyperbaric oxygen (HBO) in treatment of diabetes complicated with acute cerebral infarction (ACI) and its effect on insulin resistance (IR).Methods One hundred and twenty-eight patients with diabetes complicated with ACI were divided into control group and treatment group with 64 cases each by table of random digit.The control group was treated with routine medication,while the treatment group was treated with HBO besides routine medication.The two groups were treated for 14 days.The neural function defect degree score,fasting blood glucose(FPG),fasting insulin (FINS) and insulin action index(IAI) were assessed before and after treatment in each group.Correlation between the difference value of IAI and neural function defect degree score was analyzed with Pearson correlation analysis.ResultsThe total effective rates in treatment group and control group were 87.50％ (56/64) and 70.31％(45/64) respectively,with a significant difference between two groups (P＜ 0.05).IAI after treatment in control group and treatment group showed significant difference compared with that before treatment(P＜ 0.05 or ＜ 0.01 ),but IAI after treatment in treatment group and control group had significant difference (-4.03 ± 0.51 vs.-4.22 ± 0.55,P ＜ 0.05).There was negative correlation between the difference value ofIAI and neural function defect degree score(r =-0.696,P ＜ 0.01 ).ConclusionHBO may increase the clinical efficacy in treatment of diabetes complicated with ACI,and also it improves IR significantly.

Objective To study the molecular mechanism of atherosclerosis induced by intravascular pressure.Methods Technic aortic coarctation (TAC) was performed in ApoE-/-mice (n＝8) and control littermate (n＝8) mice.HE staining was performed in the vessels upstream and downstream of the mice models.In vitro,hypoxia inducible factor-1a (HIF-1α),heme oxygenase,reactive oxygen species and phosphorylated AMP activated protein kinase (AMPK) were analyzed in different intravascular pressure with a myograph system that allowed independent variation of flow and pressure.Results After one month of TAC,ApoE/ mice in a normal chow diet developed occlusive plaque and accelerated atherosclerotic lesions exclusively in upstream high-pressure vessel segments.In vitro,HIF-1α was increased,heme oxygenase was higher over(2.7 ±0.6) fold,reactive oxygen species and phosphorylated AMPK were also enhanced in high intravascular pressure perfused vessel segments as compared with low intravascular pressure perfused vessel segments (all P＜0.05).Conclusions Intravascular pressure elevation can activate hypoxia and metabolism-associated pathways in the arterial wall,and predispose atherosclerosis accelerated.

Objective To investigate the relationship between the cystic fluid characteristics of symptomatic sacral canal cyst and the interventional therapeutic prognosis.Methods A total of 114 patients with symptomatic sacral canal cyst were enrolled in this study.Clinically,all patients complained of discomfort at lumbosacral area.Among the 114 patients,86 were primary sacral canal cyst and 28 were recurrent sacral canal cyst.Under DSA guidance,percutaneous puncturing of the cyst was performed,2-5 ml cerebrospinal fluid (CSF) was aspirated and sent for laboratory tests.Then a small amount of nonionic contrast agent was injected into the cyst to determine whether the cyst was communicated with the subarachnoid space or not.Finally,double-needle method was used to aspirate the cyst fluid.Results Radiography showed that communication between the cyst and subarachnoid space was detected in 66 patients (group A),while no communication between the cyst and subarachnoid space was observed in 48 patients (group B).In patients with primary symptomatic sacral canal cyst,the differences in the sugar and chloride levels of CSF between group A and group B were statistically significant.In patients with recurrent symptomatic sacral canal cyst,the differences in the sugar,protein and chloride levels of CSF between group A and group B were also statistically significant.Statistically significant correlation existed between the single or multiple CSF changes and the interventional therapeutic prognosis.Conclusion Sacral canal cysts can be classified into two types:cyst-subarachnoid space communicating type and cyst-subarachnoid space non-communicating type.The characteristics of CSF in patients with primary symptomatic sacral canal cyst are different from those in patients with recurrent symptomatic sacral canal cyst.Multiple CSF changes,the increased sugar level and decreased chloride level in CSF are well correlated with the interventional therapeutic prognosis.

Percutaneous vertebroplasty (PVP) is a minimally-invasive technique,which has been widely employed in the treatment of hemangiomas,vertebral compression fractures,spinal metastases,myeloma and other diseases.Clinically,it is generally believed that the curative effect of PVP is closely related to the injected amount of bone cement.However,there is still great controversy over the optimal injection volume of bone cement.Based on the current researches both at home and abroad,this article aims to make a brief introduction about the relevant vertebral biomechanical factors that might affect the injection volume of bone cement,the influence of the injected volume of bone cement on the vertebral strength,rigidity and adjacent vertebral bodies.The main current disputes are pointed out so as to lay the foundation for further study.