1.Comparison of the diagnostic value of four tests for superior labrum anterior and posterior lesions of the shoulder
Chinese Journal of Orthopaedics 1999;0(04):-
Objective To compare the diagnostic value of four signs for superior labrum anterior and posterior (SLAP) lesions of the shoulder. Methods The physical examination was performed randomly on 81 cases with abnormalities of the shoulder. There were four tests, including Kibler anterior sliding test, Liu crank test, O'Brien active compression test and Kim biceps load test Ⅱ. The arthroscopic examination were also performed. The result of the arthroscopic examination was considered as a golden standard, so that we could estimate the diagnosis value of the four tests according to the method of evaluation of diagnosis test on clinical epidemiology, their sensitivity, specificity, positive and negative predictive value, accuracy. Results There were 21 cases diagnosed as SLAP lesions by arthroscopy. The diagnosis value of Kim biceps load test Ⅱ was the highest among the four tests, in which 19 of true positive, 59 of true negative, 1 of false positive, only 2 of false negative case; while the sensitivity was 90.48%, specificity was 98.33%, positive predictive value was 95.00%, negative predictive value was 96.72%, and accuracy was 96.30%. However the sensitivity, specificity, positive predictive value, negative predictive value and accuracy of Kibler anterior sliding test were 76.19%, 96.67%, 88.89%, 92.06%, 91.33%; and those of Liu crank test were 85.71%, 93.33%, 81.82%, 94.92%, 91.35%; those of O'Brien active compression test were 80.95%, 91.66%, 77.27%, 93.22%, 88.89%. Conclusion Kim Biceps load test Ⅱ may be the best for clinical diagnosis of SLAP lesions of the shoulder.
2.Development and application of modified military water tank
Chinese Medical Equipment Journal 2017;38(4):42-44,53
Objective To improve the existing military water tank to prevent water pollution.Methods The modified water tank was composed of a lip,body,a floating ring filled with foam materials,a zipper,multi faucets,drain valve,rack and etc.The zipper on the top of the tank could close down the tank,the faucets at the lower part realized water supply,and the drain valve at the bottom discharged residual water.Results The dust,small animals and etc were prevented from going into the tank with the consumed water decreased,and the tank was easy to clean.Conclusion The tank contributes to military water supply at field conditions,and is worthy promoting practically.
3.Antifungal susceptibility testing in vitro for pathogenic Fusarium sp
Yuxin WANG ; Suying GENG ; Zhiqun WANG
Chinese Journal of Laboratory Medicine 2001;0(04):-
Objective To study the susceptible drugs for Fusarium , and provide references for clinical treatment. Methods 40 F.solani and 6 F.moniliforme isolates were examined for the susceptibility to 7 antifungal drugs : AmB, ketoconazoie, miconazole, itraconazole, fluconazole , 5 Fc, and terbinafin by broth microdilution of M38 P recommended by NCCLS. Results 40 F.solani :MIC50 AmB 4 ?g/ml, ketoconazoie 16 ?g/ml, fluconazole 64 ?g/ml, itraconazole 16 ?g/ml, 5 Fc 64 ?g/ml, miconazole 16 ?g/ml, terbinafin 0.25 ?g/ml. MIC90: In addition to AmB and terbinafin , others antifungal agents were similar to MIC50, AmB 8 ?g/ml, terbinafin 4 ?g/ml. 6 F.moniliforme: except AmB and fluconazole were similar to MIC50 of 40 F.solani , others were lower than F.solani MIC50. Conclusion The MIC of terbinafin MIC is lower than that of others drugs, it could be used in the treatment of infections coused by Fusarium sp .
4.Expression of P16/cyclin D1 and their relationship with cervical lymph node metastasis of tongue carcinoma
Yuanyuan ZHANG ; Cheng WANG ; Yuxin WANG
Journal of Practical Stomatology 2000;0(06):-
0.05),cyclin D1 was positively and P16 negatively associated with the differentiation and the lymph node metastasis of tongue cancer(P
5.Study on relationship between delta 2642 genotypes in IT15 gene and age of onset of Huntington disease
Wei ZHANG ; Benshu ZHANG ; Yuxin WANG
Chinese Journal of Neurology 2008;41(7):448-451
Objective To detect the relationship between the genotypes of the 2642 deletion polymorphism (delta 2642) in IT15 gene and the age of onset of Huntington disease (HD). Methods Peripheral blood samples were collected from 29 patients with HD and 38 gender- and age-matched controls. All patients with HD were diagnosed by gene diagnosis. The CAG trinucleotide repeats of the 29 patients with HD outnumbered 40. Polymerase chain reaction-restriction fragment length polymorphism and polyacrylamide gel electrophoresis technique were used to detect the genotypes of delta 2642. Results No B/B genotype was detected in both 2 groups. The genotype frequencies of A/A and A/B in the IT15 delta 2642 polymorphism was 65.5% and 34. 5% in HD patients,92. 1% and 7. 9% in the controls respectively (x2 = 7. 435, P =0. 006). The frequency of the B allele was 17.2% in the HD group and 3. 9% in the control group (P = 0. 010, OR = 5.07, 95% CI 1.47-15.12). Analysis showed no significant difference between A/A genotype patients and A/B genotype patients for CAG trinucleotide repeats(P =0. 188). HD patients with A/B genotype (37.33±6. 46) had an earlier onset than the patients with A/A genotype (47.10± 10. 86, t = 2. 491, P = 0. 019). Conclusions These data demonstrated that variations in IT15 delta 2642 polymorphisms may be a genetic factor that influences the variability in HD age of onset. HD patients with delta 2642 A/B genotype have an earlier onset than the patients with A/A genotype.
6.Epidermal growth factor interferes colony formation of fibroblasts and differentiation into neuron-like cells from non-adherent bone marrow mesenchymal stem cells in mice
Yuxin WU ; Yan WANG ; Xiaoming BEN
Chinese Journal of Tissue Engineering Research 2010;14(1):11-14
BACKGROUND: Non-adherent mesenchymal stem cells (NA-MSCs) can form colony forming unit of fibroblasts and induce the differentiation into adipocytes, osteoblasts, and chondrocytes. OBJECTIVE: To determine the effect of epithelial growth factor (EGF) on colony formation of fibroblasts and differentiation into neuron-like cells from NA-MSCs.METHODS: Bilateral femur and tibia as well as total MSCs were separated, and repeated-transfer was employed to purify NA-MSCs. The fifth-passage total MSCs and NA-BMCs were induced in a medium containing EGF and basic fibroblast growth factor (b-FGF) for 2 weeks. Colony unit formation of fibroblasts, effect of EGF on colony-forming unit of fibroblasts, and relative protein expression detected by toluidine blue and immunocytochemical staining were observed. RESULTS AND CONCLUSION: Both total MSCs and NA-BMC could generate colony-forming unit of fibroblasts. After treatment of EGF, colony-forming unit of fibroblasts from NA-BMC was increased significantly. Immunocytochemical staining demonstrated that two weeks later both neuro-specific NeuN and NF-200 were observed in total MSCs and NA-BMC; while, toluidine blue staining indicated that neuron-specific Nissl body was observed in some cells. EGF can effectively promote colony-forming unit of fibroblast from NA-BMC, and repeated-transfer NA-BMC can induce differentiation into neuron-like cells.
7.In vivo differentiation of non-adherent transplanted bone marrow mesenchymal stem cells into neuron-like cells following cerebral ischemia injury in mice
Yuxin WU ; Yan WANG ; Xiaoming BEN
Chinese Journal of Tissue Engineering Research 2009;13(49):9641-9644
BACKGROUND: Non-adherent mesenchymal stem cells (NA-MSCs) can form colony forming unit of fibroblasts and induce the differentiation into adipocytes, osteoblasts, and chondrocytes.OBJECTIVE: To determine whether non-adherent mesenchymal stem cells (NA-MSCs) in adult mouse bone marrow could differentiate into neuron-like cells in cerebral ischemic region.METHODS: Bilateral femur and tibia of β-Gal transgenic mice was separated, and repeated-transfer was used to collect the fifth-passage purified NA-MSCs which were adjusted at concentration of 1×10~(12)/L Middle cerebral artery occlusion was established in the two groups. After 7 days, 3 μL fifth-passaged NA-MSCs suspension was injected into cerebral ischemic region in the transplantation group, while an equal amount of saline was injected into model group. Survival, distribution, and differentiation of donor cells in cerebral ischemic region were observed at 8 weeks after transplantation.RESULTS AND CONCLUSION: LacZ staining showed that donor cells could express β-Gal protein after 8 weeks and survived in the ischemic region. Simple and double immunohistochemical staining indicated that β-Gal-positive donor cells were detected in necrotic region and at necrotic edge of ischemic model. Additionally, partial cells could express neuro-specific NeuN protein and glial cell-specific GFAP. NA-MSCs are able to survive and migrate in cerebral ischemic region; moreover, partial NA-MSCs can differentiate into mature neuron-like cells or glial cells which participate in repairing brain injury.
8.Steinmann pin poking closed reduction axial combined with lateral multiple hollow screws internal fixation in repair of calcaneal fractures
Wenchen LIN ; Weidong LIN ; Yuxin WANG
Chinese Journal of Tissue Engineering Research 2015;(53):8591-8596
BACKGROUND:The treatment of calcaneal fractures using open surgery is likely to cause greater trauma. OBJECTIVE:To explore the clinical effect of steinmann pin poking closed reduction axial combined with lateral multiple hol ow screws internal fixation in repair of Sanders II, III type calcaneal fractures. METHODS:The clinical data of 73 patients with Sanders II, III type calcaneal fractures were retrospectively analyzed and divided into conventional group (n=36) and experimental group (n=37) according to the treatment method. Patients in these two groups were respectively treated with conventional open reduction internal fixation and steinmann pin poking closed reduction axial combined with lateral multiple hol ow screws internal fixation. RESULTS AND CONCLUSION:Compared with the conventional group, the hospital stays of patients in experimental group were shorter, hospital costs reduced. There were no obvious changes in the foot rating from the American Association of Ankle Injuries, B?hler angle and Gissane angle. The incidence of complications was significantly decreased. These results demonstrate that the treatment of Sanders II, III type calcaneal fractures with conventional open reduction and bone plate internal fixation and steinmann pin poking closed reduction axial combined with lateral multiple hol ow screws internal fixation can obtain the basic equivalent clinical effect, however, the treatment of steinmann pin poking closed reduction axial combined with lateral multiple hol ow screws internal fixation have more obvious advantages, such as a shorter hospital stays, less hospital costs, and also can effectively control the complications.
9.DSA study of the effect of vasopressin on the small bowel circulation before and after embolization
Xueqin LI ; Qiaoxi WANG ; Yuxin GUO
Journal of Interventional Radiology 1994;0(04):-
Objective To study the effect of vasopressin (VS) on the small bowel circulation and the safety of emboliotherapy for the small intestinal hemorrhage by DSA. Methods Ten dogs were divided into three groups. Vasa recta were ligated 30min after VS infusion ended in group A( n =4), and 2h after VS infusion ended in group B( n =4), they were ligated without VS infusion in control group ( n =2). DSA were performed before and after VS infusion, before and after the ligation. The tested parts of intestine were resected to make the pathologic examination a week late. Results All branches of mesenteric arteries contracted and the contrast developed light in the intestinal wall after VS infusion. Branches contraction recovered but the contrast developed still slight in the intestinal wall about 30min after infusion ended. All manifestation of DSA recovered to normal 2h after infusion ended. In all groups, the blood vessel net can be seen but is fewer and scattered in the area of ligation. The collorate presented soon after the ligation. The pathologic examination proved that there was only mind mucosal ischemia in all groups. Conclusion The repressive effect of VS to the circulation of intestine weakened and then disappeared rapidly after the infusion ended. VS infusion had no significant effect on the safety of emboliotherapy for small intestinal bleeding when the infusion has been finished for more than 2hr. DSA can demonstrated the circulation state of the intestine before and after embolization.
10.Research and development of tissue engineered meniscus
Yuxin ZHAO ; Hong WANG ; Wenqi YUAN
International Journal of Biomedical Engineering 2006;0(06):-
The authors reviewed the research and development of tissue engineered meniscus from three points (cell seeds, scaffolds, cell factors) and point out current questions and investigative direction in the future.