Objective To introduce the clinical apply of middle and small skin defect in finger injury with lateral arm free perforator flap.Methods (1) Ten cadavers were injected with a modified lead oxide-gelatin mixture.Later,CT scan,three-dimensional reconstruction of the cutaneous perforator vessels on the later arm.Then simulate the flap design.All cadavers were dissected before CT scanning.(2) Eighteen cases of middle and small skin defects in finger injury were treated with lateral arm free flap.The defect area were from 3 cm × 4 cm to 6 cm × 9 cm.Results Our research showed that the average caliber diameter of perforators of profunda brachial artery(PBA) was (0.71 ± 0.15) mm,and Posterior radial collateral artery(PRCA) was (0.94±0.22)mm.The results of pedicle length of perforator of PBA was (2.74 ±0.42) cm:(2.96 ±0.37) cm,and PRCA was (4.78 ±0.63) cm:(4.86 ±0.51) cm.3D reconstructive results showed that the perforators of PBA and PRCA dominated the lateral upper arm area.The flap of 18 cases survived after the operation.The wound of providing area was directly sutured or skin grafting and got healing.All cases were followed up for 6 months to 3 years,and the average follow-up time was 11 months.There was a little swelling on the outlooks of the flap,but the texture and sensation of the flap was good.Conclusion The lateral arm free perforator flap has a stable vessel pedicle,good texture and sensation,so it was a good method to repair middle and small skin defect in finger injury.

To set up a new method of detecting bacterial number in situ,NADH fluorescence method based on the fluorescent characteristic of NADH was used.When the concentration of NADH ranged from 10 nmol/L to 0.2 mmol/L,its concentration had a good line relationship to the fluorescence intensity(R2= 0.9905).Separating bacterial cells by centrifugation and extracting NADH with hot Tris-HCl buffer,the re-sult of bacterial count detected with NADH standard plot was 1?104 CFU/mL in an hour.In summary,NADH fluorescence method is rapid,sensitive,simple and reliable to detect total bacterial number.There-fore,the method can be widely applied in the field of food sanitation and safety,environment detection and so on.

Castleman Disease ; complications ; Child ; Female ; Humans ; Paraneoplastic Syndromes ; complications ; Pemphigus ; complications

Antiviral Agents ; pharmacology ; therapeutic use ; Drug Design ; Herpesvirus 8, Human ; drug effects ; Humans ; Simplexvirus ; drug effects

Objective To explore influencing factors for complete resection and operation time of endoscopic submucosal dissection( ESD) for colorectal tumors. Methods This retrospective study included 95 consecutive colorectal tumors in 88 patients whose pathological diagnosis was adenoma and carcinoma, treated with ESD at the Department of Endoscopy of the First Hospital of Jilin University from January 2013 to December 2014. Multiple logistic regression analysis was conducted on the factors related to complete resection and operation time. Results Average tumor size was 28. 7±14. 1 mm(range,8?80 mm), and the average procedure time was 80. 72±63. 90 min. The rate of complete resection was 92. 6%(88/95),and the rate of incomplete resection was 7. 4%(7/95). Multivariate logistic regression analysis revealed that fibrosis (P=0. 012,OR=52. 473, 95%CI:2. 571?1140. 438) contributed to incomplete resection. Fibrosis ( P=0. 001, OR=0. 045, 95%CI:0. 007?0. 289) ,tumor size ( P=0. 035,OR=0. 170, 95%CI:0. 033?0. 884) ,granular?type laterally spreading tumor ( P=0. 013, OR=34. 432, 95%CI:2. 138?554. 476 ) , non?granular?type laterally spreading tumor(P=0. 044,OR=31. 715, 95%CI:1. 093?919. 904) were independent factors for extending operation time of colorectal ESD. Conclusion The severer fibrosis can induce higher rate of incomplete resection. The more severe fibrosis is, the larger tumor size is, and the longer operation time is.

The effects of betulinic acid (BA), a pentacyclic lupane-type triterpene, on the cell viability, cell cycle and apoptosis in human leukemia K562 cells were investigated. The effects of BA on the growth of K562 cells were studied by MTT assay. Apoptosis was assayed through Annexin V/propidium iodide (PI) double-labeled cytometry. The effects of BA on the cell cycle of K562 cells were studied by a PI method. The expression of Bax and capase-3 was detected by using Western blot. The results showed that BA was cytotoxic to K562 cells with an IC(50) of 21.26 mug/mL at 24 h. After treating K562 cells with 10 mug/mL BA for 72 h, the number of cells was reduced by 58%. BA induced apoptosis of K562 cells in a time- and dose-dependent manner. The proportion of cells in G(0)/G(1) and G(2)/M phases was decreased and that in S phase was increased after K562 cells were treated with BA for 24 h. BA treatment also increased the expression of the pro-apoptotic proteins Bax and caspase-3. It suggested that BA could inhibit the proliferation of K562 cells through the induction of cell cycle arrest and apoptosis. The antitumor effects of BA were related with up-regulation of the expression of Bax and caspase-3 proteins. BA may qualify for the development of new therapies for leukemia.

Background Proliferative vitreoretinopathy (PVR) is one of the major causes of retinal detachment surgery failure.Based on proteomic studies of PVR vitreous,the insulin-like growth factor binding protein-6 (IGFBP-6) protein was specifically expressed in the vitreous and serum of PVR patients.Furthermore,its expression level is higher in the vitreous and serum in severe PVR patients than that in mild PVR patients.Objective This experiment was to detect the expression of IGFBP-6 in a PVR rat model.Methods Seventy 7-week old male SPF Wistar rats were included and were randomized into the PVR model group and control group.A mixture of RPE-J cell suspension(5 μl) and platelet-rich plasma (5 μl) was intravitreally injected in the left eyes of adult Wistar rats to establish the PVR model,and normal saline solution was administered in the same way in the control group.The rat eyes were clinically examined 1 week,2,3 and 4 weeks after injection,and PVR was graded based on the criteria of Francine.The animals were sacrificed after 1 week,2,4 or 8 weeks for the preparation of retinal sections and liver extraction.Expression levels of IGFBP-6 mRNA in the rat retina and liver were assayed by real-time Q-PCR.The expression of IGFBP-6 protein in the rat serum and vitreous was detected by ELISA.The use of animals complied with the Regulations for the Administration of Affairs Concerning Experimental Animals by State Science and Technology Commission.Results Purified IGFBP-6 RNA was extracted from the liver and retina of Wistar rat and quantified by real-time Q-PCR.The expression level of IGFBP-6 mRNA in retina was (3.79± 1.33) × 10-4 in the PVR model rats,showing a significant decline in comparison with the control rats with a level of(8.32±2.96) × 10 4,4 weeks after injection (t =3.42,P＜0.01).The expression of IGFBP-6 mRNA in the 4th week was significantly lower than that of 1 week,2 or 8 weeks after the establishment of the PVR model(P＜0.05).No significant difference was found in the IGFBP-6 mRNA level in the liver between the PVR group and control group(27.60± 14.01 × 10 4 vs.25.01 ± 12.04 ×10-4,respectively),as well as among the different time points(P＞0.05).IGFBP-6 mRNA content in the retina was significantly reduced in grades 1,2 or 3 of the PVR groups compared with the control group(P＞0.05),but there was no significant difference among the different grades of PVR groups (P＞0.05).Concentrations of IGFBP-6 protein in grades 1,2 and 3 of the PVR model group were (221.00 ± 19.32),(229.63 ± 18.89) and (225.70 ± 26.71) μg/L,with a significant elevation in comparison with (173.25 ±21.11) μg/L of the control group (t =2.14,P＜0.05).However,there was no significant change among the different grades of PVR groups(t=1.24,1.46,P＞0.05).The concentrations of IGFBP-6 protein in the vitreous and serum were higher in PVR rat samples (vitreous:225.44±19.36 μg/L;serum:108.48 ± 15.78 μg/L) than in control rats (vitreous:173.25 ± 21.11 μg/L,serum:95.96 ±17.40 μg/L)(P＜0.05).Conclusions The concentrations of IGFBP-6 protein in the vitreous and serum increase in PVR rats.The results indicate that the increased IGFBP-6 in the vitreous might be a localized autocrine secretion of the eye.

To explore the utility of apparent diffusion coefficient(ADC)histogram analysis for differentiating genetic subtypes of diffuse lower-grade gliomas. A total of 55 patients with WHO grade Ⅱ/Ⅲ diffuse lower-grade gliomas who underwent preoperative routine brain magnetic resonance imaging and diffusion weighted imaging in our center were retrospectively evaluated.Among whom there were 14 patients with isocitrate dehydrogenase(IDH)wild-type gliomas(IDH group),19 patients with IDH-mutant 1p19q intact gliomas(IDH 1p19q group),and 22 patients with IDH-mutant 1p19q co-deleted gliomas(IDH 1p19q group).The whole-lesion ADC values derived from histogram analysis(including ADC,ADC,ADC5%,ADC10%,ADC25%,ADC50%,ADC75%,ADC90%,ADC95%,ADC,mode,range,skewness,kurtosis,standard deviation,inhomogeneity,and entrophy)were measured for each patient.All parameters between the different genetic subtypes were compared by using the Student's test or Mann-Whitney test.Receiver operating curve(ROC)analysis was used to assess the diagnostic performance of ADC histogram in distinguishing the different genetic subtypes. Compared with IDH group,the ADC75%(=0.021),ADC90%(=0.015),ADC95%(=0.014),ADC (=0.035),range(=0.009),standard deviation(=0.001)and inhomogeneity(=0.001)were significantly lower in IDH group;in contrast,the ADC (=0.031)and kurtosis(=0.020)of IDH group were significantly higher than those in IDH group.The ADC(=0.010),ADC5%(=0.016),ADC10%(=0.012),ADC25%(=0.007),ADC50%(=0.005),ADC75%(=0.015),and mode(=0.002)were significantly higher in IDH 1p19q group than in IDH 1p19q group.Inhomogeneity achieved the highest area under ROC(AUC)(0.811)in differentiating IDH gliomas and IDH gliomas,with a cutoff value of 0.229;the sensitivity and specificity were 85.7% and 73.2%.The mode achieved the highest AUC(0.744)in differentiating IDH 1p19q gliomas and IDH 1p19q gliomas,with a cutoff value was 1448.75×10 mm /s;the sensitivity and specificity were 57.9% and 90.9%. ADC histograms analysis may be helpful to differentiate genetic subtypes in lower-grade gliomas.
Brain Neoplasms ; Diffusion Magnetic Resonance Imaging ; Glioma ; Humans ; ROC Curve ; Retrospective Studies

Objective To investigate the efficacy of oxygen uptake efficiency slope (OUES) on evaluation the cardiopulmonary function of patients with chronic obstructive pulmonary disease (COPD). Methods The cardiopulmonary function of 54 stable COPD patients with the cardiopulmonary function of Ⅱ~Ⅳ were evaluated, following a symptom-limited Steep protocol with simultaneous respiratory gas measurement,they were performed exercise tests on a treadmill, simultaneously the oxygen uptake (VO2), carbon dioxide production (VCO2),peak oxygen uptake (VO2peak), minute ventilation (VE), and respiratory gas exchange rate (RER) were measured. OUES was derived from the relation between VO2 and VE during incremental exercise and was determined by VO2=algVE+b, where a=OUES, to measure anaerobic threshold (VAT) meanwhile. Results OUES correlated with the VO2peak (P<0.001). 75% OUES, 90% OUES and 100% OUES were not significantly different (F=0.239, P=0.830). Conclusion OUES can respond the cardiopulmonary function in patients with COPD, 75% OUES from sub-maximal exercise can be an index for cardiopulmonary function.