BACKGROUND:Femoral tunnel suspensory fixation device for anterior cruciate ligament reconstruction has a certain clinical comparison. However, there are a few fixture researches on the expansion of bone tunnel and graft changes.
OBJECTIVE:To observe the short-period effect of femoral tunnel side fixtures Endobutton and Tightrope used in autologous hamstring anterior cruciate ligament reconstruction on bone tunnel and implant change.
METHODS:Twenty-three patients with anterior cruciate ligament injuries received one-stage hamstring reconstruction, including 13 cases of femoral tunnel fixation with Endobutton and 10 cases with Tightrope. Tibial tunnel used extrusion screws. We observed operation time, recent effects after operation (Lysholm knee score, IKDC score) and the postoperative change of femoral tunnel diameter and graft length.
RESULTS AND CONCLUSION:(1) Twenty-three cases were fol owed up for 9-12 months, averagely 10 months. (2) Joint motion was not limited in both groups. No significant difference in IKDC and Lysholm scores was determined between the two groups (P>0.05). (3) Graft length and femoral tunnel diameter were significantly higher in the Endobutton group during final fol ow-up compared with that at 1 week postoperatively (P<0.05). (4) These results suggested that the recent effects were similar between Tightrope and Endobutton fixation, but Tightrope fixation device reduces the length of graft and the extent of bone tunnel enlargement.

Objective To study the toxic effect of acrylamide (AA) to sperm quality of mice in order to provide scientific data to elucidate the reproductive toxicity of AA. Methods 25 male KM mice aged 7-8 weeks,25-30 g,were randomly divided into negative control group (H2O),AA groups (20,40 and 60 mg/kg) and positive control group (cyclophosphamide). The mice were treated with AA by gavage,once a day,for 5 consecutive days. The mice were sacrificed on the 14th day after the first administration,the quantity,motility,morphology of sperms were examined. Results The sperm quantity in each AA group reduced significantly (P

ObjectiveTo compare the efficacy and side-effects in locally recurrent nasopharyngeal carcinoma (NPC) treated by intensity-modulated radiotherapy (IMRT) and two-dimensional conventional radiotherapy (2DCRT).MethodsAmong the 292 newly diagnosed,nonmetastatic recurrent NPC,211were treated with IMRT and 81 with 2DCRT.All patients were staged according to the seventh edition of the UICC 2009 staging system.Kaplan-Meier and Logrank methods were used for survival analysis.A Cox proportional hazard model was used to examine prognostic factors.ResultsThe follow-up rate was 91.8％,there are 38 patients in 2DCRT and 106 patients in IMRT group was followed more than 3 years.There were significant differences in the 3-year actuarial overall survival (OS) rate ( 36.9％ and 51.3％,x2 =8.44,P =0.004) and local progression-free survival (LRFS) rate (63.3％ and 86.0％,x2 =13.83,P =0.000),and no significant differences in actuarial distant metastasis free survival rates (79.0％ and 83.5％,x2 =0.25,P=0.618 ) between the 2DCRT group and the IMRT group.Multivariate analysis showed that T category and IMRT ( yes vs.no) were the independently prognostic factors for OS and LRFS ( x2 =9.51,5.20,P =0.002,0.023 and x2 =4.84,9.24,P =0.027,0.002 ).The incidence of grade 3and4 trismus and radiation-induced encephalopathy were 19.9％,8.1％ for the IMRT group and 43.2％,24.7％ for the 2DCRT group ( x2 =16.37,P =0.000 and x2 =14.64,P =0.000).Whereas,severe mucosa necrosis and/or massive hemorrhage in the nasopharynx was observed in IMRT group which was not common in 2DCRT (33.2％∶7.4％,x2 =20.19,P=0.000).ConclusionsHigher local tumor control and overall survival were achieved by IMRT than 2DCRT,the incidence of severe trismus and radiation-induced encephalopathy was also reduced by IMRT,in cost of a higher incidence of mucosa necrosis and/or massive hemorrhage in the nasopharynx.

Objective To investigate the effect of intrathecal administration of a mixture of butorphanol and ketamine on cAMP-PKA-CREB signal transductian pathway in the spinal dorsal ham of the rats with inflammatory pain. Methods Twenty-four male SD rats, weighing 240-280 g,in which intrathecal catheters were successfully placed, were divided into 4 groups randomly (n = 6 each): inflammatory pain group (group IP), butorphanol group (group B), ketamine group (group K), and butorphanol + ketamine group (group BK). The inflammatory pain was induced by injection of 5% formalin 50 μl into the plantar surface of left hind paw. Normal saline 10 μl, butorphannl 12.5 μg, ketamine 50 μg, and a mixture of butorphanol 12.5 μg and ketamine 50 μg was injected intrathecally 30 min before subcutaneous injection of formalin in group IP, B, K and BK respectively.Pain intensity score (PIS) was used to assess pain behavior every 5 min within an hour after subcutaneous injection of formalin. The animals were killed at 2 h after subcutaneous injection of formalin, and the L5 segment of the spinal cord was removed for determination of protein kinase A (PKA) and phosphorylated cAMP response element binding protein (p-CREB) expression using immunohistochemistry. Results Fonnahn administration induced pain behaviour expressed as two phases. PIS scores, PKA and p-CBEB expression, and staining scores were significantly lower during the fast and second phases in group BK than in group IP (P < 0.05 or 0.01), while no significant differences were found in the indices mentioned above between group B and IP and between group K and IP (P>0.05). Conclusion lntrathecal injection of a mixture of butorphanol and ketamine can reduce inflammatory pain in rats, and the mechanism may be related to the cAMP-PKA-CREB signal transduction pathway.

Objective To investigate the feasibility of using superparamagnetic iron oxide(SPIO)as MRI contrast agent to assess rat nonalcoholic steatohepatitis Kupffer cells(KC)function.Methods Twenty male SD rats were randomly divided into A and B groups,group A(n=10)was the experimental group fed high fat diet,group B(n=10)was the control group fed normal diet After 8 weeks,plain MR and SPIO enhanced MR were performed in all the rats.Blood lipids were measured,and HE and Perl's blue staining in all livers specimen was done.The related results of the staining were analyzed with t test Results Group A TC and TG levels[(6.58±1.25)and(1.53±0.23)mmol/L respectively]were significantly higher than group B[(1.64±0.22)and(0.55±0.14)mmol/L respectively](t=11.716 and 11.588,P＜0.01).Group A and B groups hepatic signal intensity decreased in all sequences after SPIO enhanced,but in group A the level of decline[(34.78±4.51)% and(60.38±3.49)% respectively]was less than group B[(64.96±2.42)% and(81.08±1.66)% respectively]on PDWI and T_1WI,and statistically significant differences(t=-18.451 and-16.240,P＜0.01)were found.In group A the ratio of signal intensity of liver to spleen(1.002±0.141,5.000±0.516,20.004±1.490 and 2.601±0.077 respectively)was more than group B(0.400±0.102,1.500±0.115,0.503±0.105 and-0.300±0.058)before and after contrast enhancement on PDWI,T_2WI,T_2~* WI andT_1WI(t=10.745,19.800,39.168 and 92.785,P＜0.01).Typical histological hepatic lesions of NASH were observed in group A,Perl's staining-positive particles in group A(2.33±0.50)were fewer than in group B(4)(t=-10.000,P＜0.01).Conclusion The high-fat diet induced model of SD rats was close to the human NASH and was easy to establish.Clinical application of SPIO enhanced MR successfully assessed the phagocytic activity of KC in the study,and it suggested that the pathogenesis of NASH was related to the decreased phagocytic activity of KC.

Objective: To explore correlation between plasma oxidized low density lipoprotein (ox-LDL) and endothelial injury degree in patients with coronary heart disease (CHD).Methods: A total of 80 CHD patients were enrolled as CHD group, and 21 healthy subjects were selected as healthy control group.Plasma ox-LDL, circulatory endothelial cell count (CEC), nitric oxide (NO) levels were measured and compared between two groups, and their correlation was analyzed.Results: Compared with healthy control group, there were significant rise in plasma ox-LDL level[(350±173) μg/L vs.(687±169) μg/L]and CEC[(2.5±0.5) ×106个/L vs.(9.0±1.7) ×106个/L], and significant reduction in NO level[(77.4±21.1) μmol/L vs.(52.3±16.6) μmol/L]in CHD group, P<0.05 or <0.01.Spearman correlation analysis indicated that ox-LDL was significant positively correlated with CEC (r=0.793, P=0.019), and ox-LDL, CEC were significant negatively correlated with NO level (r=-0.782,-0.952, P=0.013, 0.021).Conclusion:There are significant positively correlation between ox-LDL and circulatory endothelial cell count(Vascular endothelial injury degree) in CHD patients, therefore, its treatment should focus on anti-inflammatory and endothelial cell function protection.

Objective To investigate the current situation of maternal self- efficacy of breastfeeding and explore its influencing factors in Zhengzhou. Methods Using the general condition questionnaires, breast feeding self-efficacy scale, perceived social support scale and Edinburgh postnatal depression scale to assess the situation of 180 puerperas by the convenience sampling in one obstetric hospital of Zhengzhou. Results The total score of maternal breast feeding self-efficacy was(114.04 ± 21.57)points.The frequency of delivery, the way of delivery and feeding ways, the average income of family were effected with breastfeeding self-efficacy. The total score of social support was(68.87 ± 10.43) points, the total score of puerperas depression was(7.61 ± 4.25) points.The social support score had positive correlation with breastfeeding self-efficacy(r=0.423, P<0.01). Puerperas depression had negative correlation with breastfeeding self- efficacy(r=- 0.342, P<0.01). Conclusions The maternal breastfeeding level in Zhengzhou was at a lower level. The level of maternal breastfeeding self-efficacy scale was impacted by maternal social support degree, the degree of depression. Measures should be taken to enhance maternal social support degree, reduce the degree of depression, in order to improve the level of maternal breastfeeding self-efficacy.

The gene nhaA encodes functional protein that may play an important role in salt tolerance of Escherichia coli In order to study bacteria salt tolerance, a pair of primers were designed according to public nhaA sequence and was used to amplify 1 1kb DNA fragment with PCR The nhaA gene from E coli DH5?was cloned into a T vector and sequence analyses reveal that the cloned fragment contains entire nhaA gene coding region To apply the method of homology analysis,the result shows that many kinds of bacterium have nhaA gene, such as E coli K12, E coli O157:H7, Salmonella typhimurium and Salmonella enterica , et al This analysis suggests that nhaA gene lie generally in bacterial; and it has intimate relation with salt tolerance of E coli that may be of great importance in improvement of the salt tolerance of plant

Objective To investigate the differences of clinical features,pulmonary function tests,chest imaging and prognosis between patients with idiopathic pulmonary fibrosis (IPF) combined with emphysema and without emphysema.Methods A total of 43 patients with IPF and with pulmonary fibrosis and emphysema (CPFE) were selected as observation group,and 40 patients with IPF and without emphysema were selected as control group.The clinical data of two groups of patients,including pulmonary function,partial pressure of oxygen,cellular components of bronchoalveolar lavage fluid (BALF),survival time were retrospectively analyzed and compared between two groups.Results The smoking index was (29 ± 17) pack years in observation group,much higher than that in control group (17 ± 15) pack years,the difference was statistically significant (P ＜ 0.05).The percentage of forced expiratory volume in one second (FEV1) and forced vital capacity (FVC) was (70 ± 6)％ in observation group,significantly lower than that in control group (84 ± 9)％,the difference was statistically significant (P ＜ 0.05).The percentage of diffusion capacity of carbon monoxide (DLCO) in observation group was (43 ± 11)％,significantly lower than that in control group (55 ± 17)％,the difference was statistically significant (P ＜ 0.05).The percentage of lung volume in observation group was (78 ± 12)％,significantly higher than that in control group (63 ± 11)％,the difference was statistically significant (P ＜0.05).The vital capacity was expected to account for partial pressure had no significant difference in percentage and resting arterial oxygen value between two groups (P ＞ 0.05).The total number of BALF cells,macrophages,neutrophils,lymphoeytes and eosinophils ratio had no significant difference between two groups (P ＞ 0.05).Conclusion Smoking is an important risk factor of IPF with emphysema,emphysema does not affect the prognosis of patients with IPF.

Protocarcinogenic gene Her-2/neu was closely related to the development of gastric cancer. Herceptin is an antibody according to Her-2/neu and is used for treating breast cancer. Topo Ⅱ α is the important Nuclear enzymes needed by DNA duplicate, and is closely related to the proliferation of malignant tumors, so it is the important target enzymes of cancer chemotherapy. Her-2/neu and Topo Ⅱ α are located in the same chromosomes, there are correlation between the two genes' proliferation or loss. We reviewed the expression of Her-2/neu and Topo Ⅱ α in the stomach and the new progress of the correlation between the two genes home and abroad in this paper, which provides new methods for the prevention and treatment of gastric cancer.