In order to study the changes of main oxidase and antioxidase in the pathological scars,the tissues of hypertrophic scar(10 cases),keloid(10 cases)and normal skin(8 cases)were obtained.The concentration of malonaldehyde(MDA)and the activities of xanthine oxidase(XO),copper,zinc-superoxide dismutase(CuZn-SOD),catalase(CAT)as well as glutathione peroxidase(GPX)were detected by spectrophotometric method.Compared with normal skin tissues,the concentration of malonaldehyde and xanthine oxidase activity were significantly higer in pathological scars(P

BACKGROUND: Numerous experiments and clinical practice show that human hair keratin artificial tendon induces the organism to form autogenous tendon. The process of autogenous tendon formation mainly involves the synthesis, secretion and package of collagen subtype I.OBJECTIVE: To explore the role of collagen subtype I mRNA expression in autologous tendon formation after human hair keratin artificial tendon implantation.DESIGN: A completely randomized controlled experiment based on the experimental animals.SETTING: Department of Histology and Embryology and Department of Biochemistry and Molecular Biology of Southern Medical University.MATERIALS: The experiment was conducted in the Experimental Animal Center of the First Military Medical University of Chinese PLA from May 2003 to September 2004. Totally 33 New Zealand rabbits of either gender,weighing 2.0 to 2. 5 kg, were provided by the center. The animals were randomly divided into experiment 3, 6, 9, 12, 16 and 20 weeks groups, negative control 9 and 20 weeks groups and normal control group. Among them,experiment 3 and 6 weeks group and normal control group had 3 rabbits in each and the other groups had 4 rabbits. Human hair keratin artificial tendons were normal human hair treated by a series of biochemical methods and were supplied by the Department of Biochemistry & Molecular Biology of the university. The human hair keratin artificial tendons were divided into three groups with different degradation rates, namely, fast(F), medium(B) and slow(Z). The tendons were made up of the fast, medium and slow degradation groups mixed at the ratio of 4: 3: 3.off by 1.0- 2.0 cm, human hair keratin artificial tendon was grafted by end-to-end anastomosis with both ends of the broken tendon before sewing control group, no artificial tendon was implanted although the animals ungroup was normal rabbits' tendon. Sampling was carried out at 3, 6, 9, 12, 16and 20 weeks after human hair keratin artificial tendon implantation in experiment groups, and at 9 and 20 weeks after operation in negative control group, respectively. The expression of collagen subtype I mRNA was detected at weeks 3, 6, 9, 12, 16 and 20 after grafting using reverse transcription polymerase chain reaction technique.MAIN OUTCOME MEASURES: The ratio of collagen subtype I mRNA to Glyceraldehyde-3-phosphate dehydrogenase(GADPH) mRNA in normal tendon and autogenous tendon induced by human hair keratin artificial tendon at all time points was calculated, and significance test between all these paired groups were performed.collagen subtype I mRNA/GADPH mRNA expression was 0.96 ±0.02 in expression of collagen subtype I mRNA/GADPH mRNA in autogenous tendon induced by human hair keratin artificial tendon in experiment group appeared at week 3, increased rapidly at week 3 to 6, peaked at week 6, and remained stable at week 9 to 20. The expression at week 6 was significantly higher in experiment group than in normal control group( F = 6. 254, P ＜ 0.05); the expression at other weeks was also significantly higher in experiment group than in normal control group( F= 1. 258 - 1. 987, P ＞ 0.05).CONCLUSION: The activation, proliferation and secretion of collagen protein as well as the synthesis of collagen subtype I by tenocytes may be responsible for autologous tendon formation after human hair keratin artificial tendon implantation.

Objective To compare the differences of blood glucose detected by four methods with different instruments and specimen types at early stage in severely burned rats.Methods 24 Sprague-Dawley (SD) rats were randomly divided into two groups:control group 1 (Sham scald group,n=8) and scald injury group 1 (n=16).Blood samples of scald injury group 1 were collected at 12,and 24 hours after scald (n=8,each time).Another 20 SD rats were randomly divided into two groups:control group 2 (Sham scald group,n=10) and scald injury group 2 (n=10).Blood samples of scald injury group 2 were collected at 12 hours after scald.The rats in scald injury group 1 and 2 were placed into scalding water (95.0±0.5)℃ for 15 seconds to model third-degree burn with 30％ total burn surface area (TBSA).The rats in scald injury group 1 were given intraperitoneal injection with normal saline(40 ml/kg) immediately,while those in scald injury group 2 were given intraperitoneal injection with normal saline (40 ml/kg) 6 hours after scald.The rats in Sham scald group 1 and 2 were placed into warm water 37℃ for 15 seconds,and did not received injection.Portable glucometer/caudal artery (vein) blood,portable glucometer/abdominal aorta blood,spectrophotometer/femoral venous plasma,and spectrophotometer/abdominal aorta plasma were used to detect blood glucose.Results ①Compared with Sham scald group 1,the levels of blood glucose detected by portable glucometer/caudal artery (vein) blood and spectrophotometer/femoral venous plasma in scald injury group1 at 12,24 hours after scald were significantly increased(P＜0.05).Compared with Sham scald group 2,the levels of blood glucose detected by portable glucometer/abdominal aorta blood and spectrophotometer/abdominal aorta plasma in scald injury group 2 at 12 hours after scald were significantly increased(P＜0.05).②The comparison of portable glucometer/caudal artery (vein) blood and spectrophotometer/femoral venous plasma in Sham scald group 1,portable glucometer/abdominal aorta blood and spectrophotometer/abdominal aorta plasma in Sham scald group 2 had no statistical significance (P＞0.05).The levels of blood glucose detected by portable glucometer/caudal artery (vein) blood were significantly lower than those detected by spectrophotometer/femoral venous plasma (P＜0.05) in scald injury group 1.The comparison of blood glucose detected by portable glucometer/abdominal aorta blood and spectrophotometer/abdominal aorta plasma had no statistical significance in scald injury group 2 (P＞0.05).Conclusion Four kinds of methods used in this study shows that the levels of blood glucose were significantly increased at early stage in severely burned rats,and the portable glucometer/abdominal aorta blood is a relatively simple and fast method to detect blood glucose.

Objective To summarize the impact factors of extracorporeal shock wave lithotripsy (ESWL) in ureteral calculi patients.Methods The data of 287 patients with ureteral calculi from January 2010 to December 2012 in the Aerospace General Hospital of Beijing who received the ESWL were retrospectively analyzed.The relationship between ESWL' s effect and patients' gender, age, the stone' s size, the stone's location, the length of the course and the stone bed' s polyps hyperplasia was analyzed.Results The Partial correlation course and chi-square test showed that, there was statistically significant difference between the ESWL treatment effect and patient' s age, patient' s length of the disease course and patient' s stone size (P＜0.01).The value of OR between patient' s age and ESWL treatment effect was 1.905, showed that with the age of the patients increased every 10 years, the success rate of ESWL was reduced by 1.905 times.The value of OR between the patient' s length of the disease course and ESWL treatment effect was 2.809,indicated that with the duration of the course of prolonged every 1 month, the ESWL success rate decreased by 2.809 times.The value of OR between stone size and ESWL effect was 2.277, showed that the ratio between the stone diameter of 1.1-2.0 cm and 0.6-1.0 cm, the ESWL success rate reduced by 2.277 times.For the surgery patients who were failure to ESWL treatment,we found that there has statistical significance between the patients' length of disease course and stone bed' s polyps hyperplasia(P＜0.01), but the relationship between the stone bed' s polyps hyperplasia and the gender, the age, the stone' s position, the stone ' s size had no statistical significance (P ＞ 0.05) .Conclusion The patient ' s age, the length of the disease course, the stone ' s size and stone' s position are significantly affect to the effect of ESWL.There have closely relationship between the length of the disease course and the stone bed' s polyps hyperplasia, which is the reason why the longer length of the course, the worse the ESWL' s effect.This has very important instructed meaning for anticipating the treatment effect by the comprehensive evaluation of the patients before ESWL treatment.

To evaluate the effects of supplemental probiotics and xylo-oligosaccharide on performance,digestive enzyme activities,blood index and intestinal microflora.Two hundred and forty crossbred early weaned PIC piglets with an average initial weight of (6.83 + 0.9) kg,weaned at (21 ± 2) d of age,were divided into four groups.Control Ⅰ (positive diet,with no probiotics and xylo-oligosaccharide but more fish meal,whey powder and little soybean meal),Control Ⅱ (negative diet,with no probiotics and xylo-oligosaccharide but less fish meal,whey powder and more soybean meal),Negative diet + 0.035 % probiotics,negative diet + 0.002% xylo-oligosaccharide.The results of theses studies suggested that whey powder and fish meal from 5.50% to 2.50%,soybean meal from 22.50% to 26.50% could result in decreasing of alimentary canal enzyme activity,blood sugar,total serum protein and the quantities of Bacillus in appendix(P<0.05),and raising of serum urea nitrogen,the quantities of Escherichia coli in appendix,diarrhea indexes and Feed/Gain(P<0.05).Addition of probiotics and xylo-oligosaccharide could significantly improve the activities of alimentary canal protein,lipase and amylase(P<0.05),decrease Feed/Gain and the levels of blood sugar and decrease the levels of serum urea nitrogen and improve protein equilibrium in blood and energy metabolism.The quantities of bacillus were improved,Escherichia coli were decreased in appendix(P<0.05).Diarrhea indexes were decreased(P<0.05).Whether adding probiotics and xylo-oligosaecharide or not could not affect ADG and ADFI (P>0.05).Addition of probiotics and xylo-oligosaccharide could improve digestive function,beneficial microbial population of post-alimentary canal,Feed/Gain and prevent the diarrhea of piglets.

0.05).On 1,3 and 5 days after the operation,the PHS and PVAS of Group B decreased significantly than those of Group A(P

Objective:To investigate the clinical efficacy and patient and partner's satisfaction with penile prosthesis implantation(PPI) for treating Chinese patients with severe erectile dysfunction(SED).Methods:One hundred and sixty-eight SED patients were successfully treated by PPI from July 2000 to June 2010.Of the 146(86.9%) patients who had been followed up over 6 months post-operation,36(24.7%) had been implanted with one piece malleable prosthesis(AMS650) and 110(75.3%) with three piece inflatable prosthesis(AMS700CXM).All the patients had been followed up by using international index of erectile dysfunction(IIEF5),Quality of Life Score(QOL) for evaluating clinical efficacy and using Visual Analogue Scale(VAS) for evaluating patient and partner's satisfaction and the duration of the follow-up was 6 to 119 months.Results:The mean age of patients was 35.9?12.1 years(20 to 75 years),All the operations were successful and sexual intercourse with PPI was performed post 4 to 6 weeks without severe complications like infection and erosion.The prosthesis survive rate and frequent sexual intercourse rate were 98.6% and 87.7% respectively.IIEF5 scores pre and post PPI were 6.3?1.7 and 21.3?1.6 respectively,the QOL scores pre and post PPI were 5.1?0.9 and 1.5?0.5 respectively,and both of them showed significant improvement(P

The effect of plasma middle molecule substances (MMS) on the Ca2+-ATPase activity in human erythrocyte membranes was studied. The results showed that the Ca2+-ATPase activity was significantly inhibited when the membrane preparation was incubated with MMS at 37℃. The longer the period of time for incubation, the lower the Ca2+-ATPase activity. The activity of Ca2+-ATPase could be significantly inhibited by plasma MMS of both normal person and burn patient. The inhibitory rate (%) of Ca2+-ATPase activity was elevated markedly when MMS concentration was increased (P

Objective To investigate clinicopathological features,diagnosis and treatment of cutaneous Merkel cell carcinoma (MCC).Methods CNKI,Wanfang,Vip databases were searched for reported domestic cases of MCC from January 1,1986 to October 1,2017,and clinical data were collected,and retrospectively analyzed and summarized.Results During 31 years between 1986 and 2017,a total of 171 domestic cases of MCC were reported.There were 78 males and 93 females,and the ratio of male to female was 1:1.19.Of the 171 patients,136 (79.5％) were aged more than 50 years,and lesions mostly occurred on the head and face or extremities in 139 (81.3％) patients.Clinically,149 (87.1％) patients were misdiagnosed as tumor of unknown origin (89 cases,52％),malignant lymphoma (34 cases,19.9％),benign tumors (15 cases,8.8％) or non-tumor diseases (11 cases,6.4％).As for clinical stage,84 (49.1％) patients had stage Ⅰ MCC,and 49 (28.6％)had stage Ⅱ MCC.One patient received immunotherapy,and 165 patients underwent surgical resection,including 91 patients receiving surgery alone,24 patients treated with postoperative radiotherapy,19 patients treated with postoperative chemotherapy,and 31 patients receiving postoperative chemoradiotherapy.Five patients did not describe the treatment.Among 74 patients who were followed up after the surgery,one-year survival rate and five-year survival rate were 52.7％ and 6.8％ respectively.The five-year survival rate was 6.1％ in the patients with stage Ⅰ MCC,5.6％ in those with stage Ⅱ MCC,and 0 in those with stage Ⅲ and Ⅳ MCC.Conclusions In China,cutaneous MCC mostly occurs on the head,face,neck and extremities of the middle-aged or elderly,with a high misdiagnosis rate.Surgical excision combined with radiotherapy or chemotherapy is a frequently used treatment protocol in China,but the prognosis is always poor.

Negative pressure wound therapy with instillation (NPWTi) is used in the treatment of various types of wounds. A series of parameters related to NPWTi have not been unified yet, including flushing fluid selection, flushing mode, and rinsing fluid soaking time, negative pressure size, treatment time, etc. This paper reviews the research progress of these parameters.