Objective To supervise military training by application of clinical classification of fatigue fracture so as to decrease the occurrence and development of fatigue fracture. Methods From Feb.1999 to Feb.2002, the knowledge of clinical classification of fatigue fracture was applied in the military training in which it was essential to prevent and treat fatigue fracture. Results From 1999 to 2002, the incidence of fatigue fracture decreased year by year. Types Ⅱand Ⅲof fatigue fracture decreased significantly. Conclusion Clinical classification plays an important role in decreasing the occurrence and development of fatigue fracture.

Objective To study the protective effects of the intracord transplantation of microgene pSVPoMcat－ genetically－ modified Schwann cells (MSCs)on spinal cord injury (SCI).Method Rats with semi－ division(SD) of the spinal cord was divided into 4 groups.Group S consisted of the rats with SD treated with the transplantation of MSCs, Group B of the rats with SD treated with the transplantation of SCs without genetic modification,Group C of the rats with SD without treatment and Group D was the normal control. 8 hours after operation,the half of the rats of each group were killed and the injured segment of the spinal cord was resected to be examined with atomic absorption spectrophotometry . Another half of the rats of all the groups were examined with neurological function tests to have a combined behavioral score (CBS).Result There was a significant increase of water content and Na＋ and Ca2＋ ions and a decrease of K＋ and Mg 2＋ ions in the injured cord segment of Group C and a statistically significant recovery was observed in Group A. The intracord transplantation of pSVPoMcat genetically modidied SCs improved the neurological outcome of spinal cord injury.Conclusion Our findings indicate that intracord transplantation of pSVPoMcat－ genetically－ modified－ Schwanncells exerts protective effects on the injured segment of the spinal cord through the improvement of the internal ion environment of the spinal cord.

Objective In order to observe the role of genetically modified Schwann cell (SC) with pSVPoMcat in the regeneration of injured spinal cord.Method The cells were implanted into the spinal cord.Ninety SD rats were used to establish a model of hemi- transection of spinal cord at the level of T8,and were divided into three groups,randomly, that is,pSVPoMcat modified SC implantation(Group A), SC implantation(Group B),and without cell implantation as control(Group C).After three months the presence of axonal regeneration of the injured spinal cord was examined by means of horseradish peroxidase(HRP)retrograde labeling technique and stereography.Result The results indicated that HRP labeled cells in Group A and B could be found in the superior region of injured spinal cord and the brain stem such as the red nuclei and oculomotor nuclei. The density of ventral horn neurons of the spinal cord and the number of myelinated axons in 100 μ m of the white matter was A >B >C group.Conclusion In brief,the pSVPoMcat modified SC intraspinal implantation could promote regeneration of the injured spinal cord.

As one type of primary brain injury, diffuse axonal injury (DAI) has specific traumatic mechanisms. The occurence of DAI is close to the loading property, loading manner, structural characteristics of skull, brain tissue and neck. This article demonstrated how the stress and strain varied in brain tissue effected by the load magnitude, load waveform, load frequency, load duration, linear acceleration, rotational acceleration, compounded linear/rotational acceleration, brain tissue, cerebral falx, cerebellar tentorium, skull and neck, and what are the relationships between these factors and the event of DAI.
Animals ; Biomechanical Phenomena ; Brain ; physiology ; Diffuse Axonal Injury ; physiopathology ; Humans ; Neck ; physiology ; Skull ; physiology ; Stress, Mechanical

Objective To systematically evaluate the effect of preoperative transarterial chemoembolization (TACE) on perioperative safety of patients with resectable hepatocellular carcinoma (HCC).Methods Literatures were researched using Chinese Journal Full-text Database,Wanfang database,VIP database,PubMed,Medline from December 1,1994 to May 30,2016 with the key words including “肝细胞癌,肝切除,术前化疗栓塞,经动脉化疗栓塞,liver cancer,hepatocellular carcinoma,liver resection,hepatectomy,transcatheter arterial chemoembolization,transarterial chemoembolization,preoperative” Manual retrieval was also conducted simultaneously.The randomized controlled trials (RCTs) about TACE on perioperative safety of patients with resectable HCC were received and enrolled.Patients undergoing surgery after preoperative TACE were allocated into the case group and patients undergoing first-stage resection were allocated into the control group.Two reviewers independently screened literatures,extracted data and assessed the risk of bias.Count data were described as relative risk (RR) and 95％ confidence interval (CI).Measurement data were represented as standardized mean difference (SMD) and 95％CI.The heterogeneity of the studies was analyzed using the I2 test.Results Five RCTs were enrolled in the Meta analysis,and the total sample size was 430 cases including 212 in the case group and 218 in the control group.Results of Meta analysis showed that there was no statistically significant difference in the hemihepatic resection rate between the 2 groups (RR=0.99,95％CI:0.81～ 1.20,P＞0.05).The combined resection rate of perihepatic organs in the case group was significantly higher than that in the control group (RR=3.42,95％CI:1.91-6.12,P＜0.05).Results of subgroup analysis showed that operation time and incidence of postoperative complications of patients with an average tumor diameter ＞5 cm in the case group were respectively longer and higher than these in the control group (SMD=0.31,RR=1.65,95％CI:0.06-0.57,1.01-2.69,P＜0.05).Conclusion There is no obvious effect of preoperative TACE on resectable HCC,and it can evaluated combined resection rate of perihepatic organs,operation time and incidence of postoperative complications of patients with resectable HCC and an average tumor diameter ＞ 5 cm,and also reduce the perioperative safety.

OBJECTIVETo investigate the protective effect of pSVPoMcat (myelin basic protein microgene) modifying Schwann cell on injured spinal neurons.

METHODSA model of rat spinal cord injured by hemisection was used. One hundred and twenty healthy SD rats of both sexes weighing 250-300 g were divided into three groups: Group A (n=40, treated with implantation of pSVPoMcat modifying Schwann cell), Group B (n= 40, treated with implantation of Schwann cell only) and Group C (n=400, treated with sham operation as the control). One week after operation the rat functional recovery was observed dynamically by using combined behavioral score (CBS) and cortical somatasensory evoked potentials, the spinal cord sections were stained by Nissl, acid phosphatase enzyme histochemistry and cell apoptosis was examined by methye green, terminal deoxynucleotidyl and the dUTP Nick end labeling technique. Quantitative analysis was done by computer image analysis system.

RESULTSIn Group A the injured neurons recovered well morphologically. The imaging analysis showed a result of Group A

CONCLUSIONSpSVPoMcat modifying Schwann cell implantation has protective effect on injured spinal neurons and promotes recovery of injured spinal cord function in rats.

Acid Phosphatase ; metabolism ; Animals ; Apoptosis ; Cell Transplantation ; Disease Models, Animal ; Evoked Potentials, Somatosensory ; Female ; Gene Transfer Techniques ; Male ; Methyl Green ; Myelin Basic Protein ; genetics ; Nerve Regeneration ; Rats ; Rosaniline Dyes ; Schwann Cells ; metabolism ; transplantation ; Spinal Cord Injuries ; physiopathology ; surgery

Objective To explore the clinical significance and operational methods during extended radical excision for pancreatic cancer combined with portal vein ( PV )/superior mesentery vein ( SMV ) resection,and to investigate the management of iatrogenic arterial injury. Methods Clinical date of 242 patients with pancreatic cancer undergoing extended radical excision were retrospectively analyzed. All cases were divided into three groups, patients with PV/SMV resection were in group A (n = 51 ), patients with iatrogenic arterial injury during operation were in group B(n =5) ,patients without resection of vessels werein group C (n = 186 ). Operating time、volume of intraoperative blood transfusion, time of vascular interruption、the mean hospitalization,postoperative complications and postoperative survival analysis among three groups were compared with each other. Results Operating time in group A、B and C were (442. 85 ± 102. 32 ) min, ( 348. 62 ± 92. 31 ) min and ( 315.00 ± 83.43 ) min respectively, volume of intraoperative blood transfusion were ( 1430. 83 ± 1092. 43 ) ml、( 1420. 22 ± 794. 41 ) ml and ( 928. 19 ±571.57) ml respectively,operating time and volume of intraoperative blood transfusion were of significantly difference(P <0. 05) among the 3 groups,there was no significant difference in the mean hospitalization and postoperative complications. The postoperative median survival period was 18.4 months for patients of pancreatic adenocarcinoma with PV/SMV resection, the postoperative median survival period was 16. 1 months without PV/SMV resection, there was no significant difference between these by postoperative survival analysis. In the 51 cases with vessel resection,7 cases underwent partial resection of the vascular wall,44 cases underwent segmental resection, reconstruction of the portal vein was performed by end-to-end anastomosis in 38 patients, stent graft in 6 cases, the mean length of the PV/SMV resection was (2. 92 ±1.35 ) cm; latrngenic arterial injury occurred during operation in 5 patients ( 1 in hepatic artery, 1 in superior mesenteric artery, 3 in celiac think), the artery was reconstructed by end-to-end anastomosis in 4 cases,repair in 1 case. Conclusions Active and reasonable operation for pancreatic cancer with PV/SMV resection is important for improving the rate of surgical resection and the quality of life. Because of complex topography,iatrogenic vascular injury may happened frequently.

ObjectiveTo study the early diagnosis and prevention of fungal infection in severe acute pancreatitis(SAP). Method 1.SAP patients from July 1998 to June 2002 were prospectively randomized into 3 groups: garlicin prevention group, fluconazole (low dosage) prevention group and control group, the incidence of fungal infection in SAP was compared between the groups. For fungal infection patients, the fungal clearance and mortality rate were observed. 2.Clinical data of SAP patients with fungal infection and with simple bacterial infection was compared by multivariate logistic regression, and clinical characters and risk factors of fungal infection were evaluated. Results 1.There were lower incidences of fungal infection in garlicin group (16% vs. 30%,P

Objective To determine the prevention and therapy of fungal infection in patients with severe acute pancreatitis (SAP). Methods Seventy patients with SAP admitted from July,1998 to June,2002 were randomly divided into 3 groups: garlicin prevention group, fluconazole (low dosage) prevention group and control group.The incidence of fungal infection, the fungal clearance and mortality after the treatment were compared. Results The incidence of fungal infection in garlicin group and fluconazole group was lower than that in control group. (16%∶30%,P

OBJECTIVETo observe the repair effect of Schwann cells (SCs) modified by microgene pSVPoMcat on injured spinal cord in rats.

METHODSSemi-transection injury at the level of T(8) of spinal cord was made with cutting method on 120 Sprague Dawley (SD) rats. Then 40 rats implanted with SCs modified by microgene pSVPoMcat were taken as Group A, 40 rats implanted with simple SCs as Group B and the other 40 rats were taken as the control group (Group C). The functional recovery of the rats was observed through combined behavioral score (CBS) and cortical somatosensory evoked potential (CSEP), and the expression of the glial fibrillary acidic protein (GFAP) was measured with in situ hybridization and immunocytochemistry. At 3 months after operation, the rats were examined with magnetic resonance image (MRI), and the neurofilaments (NF) of the axons were stained with immunohistochemical method.

RESULTSGFAP expression in Group A was significantly lower than that of the other 2 groups. MRI showed that the spinal signals in the injured area recovered fundamentally in Group A, didn't recover in Group B and malacia focus was found in Group C, which was same as the results of NF staining. Wave amplitudes in incubation periods in Group A and Group B tended to recover. It recovered to the normal level in Group A, which was similar to the results of CBS.

CONCLUSIONSSCs modified by microgene pSVPoMcat can inhibit GFAP expression, improve the growth of the axons and the functional recovery of neurons after spinal cord injury.

Analysis of Variance ; Animals ; Evoked Potentials, Somatosensory ; Gene Transfer Techniques ; Genetic Therapy ; Glial Fibrillary Acidic Protein ; metabolism ; Immunohistochemistry ; In Situ Hybridization ; Magnetic Resonance Imaging ; Nerve Regeneration ; Rats ; Rats, Sprague-Dawley ; Schwann Cells ; metabolism ; transplantation ; Spinal Cord ; physiopathology ; Spinal Cord Injuries ; pathology ; physiopathology ; therapy