Magnetic resonance imaging(MRI) is a non-invasive imaging technique of biological spin.MRI shows more advantages in imaging of orbital and ocular muscle than B-type sonography and X ray.MRI plays important roles in the study on anatomy of eye muscle,eye movements,survey of strabismus cause,also identification and diagnosis of strabismus.The imaging features,analysis of MRI,application of MRI in several special forms of strabismus were reviewed.

Objective To investigate the effect of Hongjintian decoction on the levels of serum MDA , SOD, NGF, MBP and bFGF of physical fatigue athletes.Methods 40 students of physical education college were randomly divided into experimental group and control group, 20 cases in each group.After the end of sport, the experimental group were given Hongjintian decoction, and control group were given sugar water, the levels of serum MDA, SOD, NGF, MBP and BFGF in two groups were detected.ResuIts Compared with control group, the level of MDA in experimental group was lower(P<0.05), and the level of SOD was higher (P<0.05); NGF and BFGF levels were higher in experimental group(P<0.05), MBP level was lower (P<0.05).ConcIusion Hongjintian decoction can significantly reduce serum MDA, MBP levels, increase serum SOD, NGF and BFGF levels of physical fatigue athletes.

OBJECTIVE:To provide reference for imipenem-resistant Pseudomonas aeruginosa infection control. METHODS:114 patients infected with imipenem-resistant P. aeruginosa were selected from 3 tertiary hospitals in Zhoushan during Feb. 2013 to Feb. 2014. 114 strains of P. aeruginosa were isolated from clinical specimens,and drug resistance characteristics and carbapene-mase-producing gene diversity were analyzed. 101 inpatients with imipenem-resistant P. aeruginosa infection were included in con-trol group;univariate and multivariate Logistic regression analysis were adopted to explore the risk factors of imipenem-resistant P. aeruginosa infection. RESULTS:114 strains were sensitive to polymyxin B,and had different levels of resistance to other 9 kinds of antibiotics. Carbapenemase-producing gene were mainly IMP and VIM type gene. Long-term hospitalization,mechanical ventila-tion,used imipenem and early combined use of antibiotics were risk factors of imipenem-resistant P. aeruginosa infection. CON-CLUSIONS:In Zhoushan area,imipenem-resistant P. aeruginosa shows serious drug resistance. To avoid long-term hospitalization and early combined use of antibiotics can reduce imipenem-resistant P. aeruginosa infection.

OBJECTIVE:To study the?-lactamase production in multi-drug resistant acinetobacter baumannii isolated in clinic.METHODS:Susceptivity to antibiotics of the bacteria was measured by K-B and agar diffusion methods.The?-lac-tamase production of acinetobacter baumannii was examined by nitrocefin disc test,then their plasmid and chromosome ex-tracted as templete,the genes coded the?-lactamase were amplified by PCR with commercial kits.Furthermore,the sequence and homology of PCR products were analyzed.RESULTS:Total12acinetobacter baumannii in this study were?-lacta-mases-producing strains with a high resistance to cephalosporin.However,it is sensitive to carbapenem-antibiotics and cephalosporin with?-lactamase inhibitors,and6strains of them were confirmed that there were?-lactamases AmpC gene on plasmid by PCR amplification and sequence analysis.CONCLUSIONS:The?-lactamases AmpC mediated by plasmid would be main factor in the high resistance to cephalosporin of acinetobacter baumannii isolated clinically.

BACKGROUND:There is a high risk for the elderly cervical spine surgery combined with cerebral infarction, whereas conservative treatment is often unable to resolve serious cervical lesions.
OBJECTIVE:To discuss the surgical effects of anchor fixation via posterior approach on cervical spinal canal stenosis combined with cerebral infarction.
METHODS:A total of 21 patients with cervical spinal canal stenosis combined with cerebral infarction who were admitted over the past 5 years accepted cervical posterior expensive open-door laminoplasty and fixation with wire anchors. Therapeutic effects were evaluated according to the Japanese Orthopaedic Association (JOA) scores.
RESULTS AND CONCLUSION:Al the patients were fol owed up 6 to 24 months, averagely 15 months. Al patients were smoothly through the perioperative period. There were no acute severe cerebral infarction cases. Preoperative JOA score was (7.6±2.0) points averagely, and postoperative JOA score was (13.3±1.8) points averagely, showing a significant difference (P<0.01). Of the 21 patients, excellent effects were in 11 cases and good in 7 cases. The effective rate was 95%(20/21), and the excellent-good rate was 86%(18/21). The risk of surgical treatment of patients with cerebral infarction is higher, but it is not the absolute contraindication. Choosing the proper operation way is highly important. Cervical posterior expensive open-door laminoplasty and fixation with wire anchors can be used to reduce the risk of cerebrovascular accidents to some extent, and obtain an excellent clinical effect.

AIM:To investigate the effect of cis-dichlorodiamine platinun ( cDDP) resistance on proliferation , apoptosis, migration and angiogenesis of esophageal cancer cell line KYSE 150.METHODS:Using the method of increa-sing concentration of cDDP in culture for 10 months, the human esophageal carcinoma cDDP-resistant cell line named KYSE150/cDDP was established successfully .The drug sensitivity was measured by MTT assay .The changes of the biolog-ical behaviors between the parental cell line and resistant cell line were determined by morphological observation assay , MTT assay, colony formation assay , DAPI staining, wound healing assay and tube formation experiment .RESULTS: No significant morphological difference between KYSE 150 cells and KYSE150/cDDP cells was observed .Compared with KYSE150 cells, the drug resistance index of KYSE150/cDDP cells was 6.35, and the viability of KYSE150/cDDP cells was decreased.The colony formation rate of KYSE150/cDDP cells was (15.00 ±3.05)%, while the colony formation rate of KYSE150 cells was (86.70 ±6.57)%.The apoptotic rate of KYSE150/cDDP cells was (0.63 ±0.09)%, and that of KYSE150 cells was (8.46 ±1.33)%.Compared with KYSE150 cells, KYSE150/cDDP cells showed a stronger healing ability of scratch, and the migration rate was higher than that of KYSE 150 cells.The results of tube formation experiment showed that the vessel number in KYSE150/cDDP group was 76.20 ±3.18, while the vessel number in KYSE150 group was 50.60 ±1.33.The protein expression of MMP-2 and VEGFR2 in KYSE150/cDDP cells was higher than that in KYSE150 cells.CONCLUSION: KYSE150/cDDP cells present drug-resistant phenotype and show a slow growth rate . The ability of apoptosis is decreased , and the abilities of cell migration and angiogenesis are increased .This may be an im-portant reason for the failure of clinical chemotherapy for esophageal cancer .

OBJECTIVETo detect the expression of basic fibroblast growth factor (bFGF) in human ocular tissues, and to assess the effect of bFGF on the proliferation of human cataract lens epithelial cells (LECs) and its correlation with age.

METHODSEnucleated eyes were subjected to immunostaining for bFGF protein. Human cataract LECs were cultured in vitro, and treated with bFGF for 48 hr. Proliferation was estimated by the positive area ratio of proliferating cell nuclear antigen (PCNA) in immunohistochemistry.

RESULTSbFGF protein was found in various human ocular tissues. bFGF stimulated human cataract LEC proliferation, and there was an age-related decrease in responsiveness of human cataract LECs to bFGF (P < 0.05).

CONCLUSIONbFGF might play an important role in the proliferation of residual human cataract LECs after cataract surgery.

Adolescent ; Adult ; Age Factors ; Cataract ; metabolism ; pathology ; Child ; Child, Preschool ; Epithelial Cells ; chemistry ; pathology ; Fibroblast Growth Factor 2 ; biosynthesis ; Humans ; Immunohistochemistry ; Infant ; Infant, Newborn ; Lens, Crystalline ; chemistry ; pathology ; Middle Aged ; Proliferating Cell Nuclear Antigen ; analysis

Objective:To explore the effect of correcting atrophic and loose breast in women with golden section theory and minimally invasive suspension and silicone prosthesis through areola incision.Methods:A total of 126 female patients with postpartum breast atrophy and ptosis were enrolled in Nanjing Kangmei and Changsha Aiste Medical Beauty Hospital from March 2012 to March 2019. The 126 cases, aged from 25 to 46 years, had a history of 2 to 16 years. The glandular suspension was performed after the implantation of the prosthesis through the incision above the areola according to the golden section.Results:A total of 252 breasts were followed up for 6 to 84 months. No severe complications such as scar, infection or skin necrosis occurred. Among them, 69 cases were very satisfied, 45 cases were satisfied, and 12 cases were basically satisfied. The satisfactory rate was 90.4%.Conclusions:This method is effective with small wound and less complications for micromastia patients with mild to moderate mastoptosis, which is worthy of clinical application.

Objective To set up a computer-assisted polyp detection system under colonoscopy,and to preliminarily verify its effectiveness.Methods Based on Faster R-CNN algorithm and the open source implementation of the open source framework tensorflow and Faster R-CNN,a computer-assisted polyp detection system under colonoscopy was constructed.According to the size and difficulty of the training set,five test groups were set up:test group one,two,three and four contained 1 000,2 000,4 000 and 6 000 training samples,respectively.Test group five increased the probability of selecting the difficult samples based on 6 000 training samples.In different training sets,the sensitivity,specificity,other classification evaluation parameters,and the evaluation parameters of target detection such as recall and precision of this polyps detection system were calculated.Results Classification evaluation parameters showed that the sensitivities of test group one,two,three,four and five were 90.1％,93.3％,93.3％,93.3 ％ and 93.5 ％,respectively,and the difference was statistically significant (x2 =25.324,P＜0.01).The sensitivities of test group two,three,four and five were all higher than that of test group one,and the differences were statistically significant (x2 =13.964,13.508,13.508 and 13.386,all P＜ 0.006 25).There were no significant differences in specificity and positive predictive value among test groups (both P＞0.05).The negative predictive values of test group one,two,three,four and five were 90.4％,93.3％,93.3％,93.3％ and 93.5％,respectively,and the differences were statistically significant (x2 =21.862,P＜0.01).The negative predictive values of test group two,three,four and five were higher than that of test group one,and the differences were statistically significant (x2=11.447,11.564,11.755,13.760;all P＜0.006 25).As the training sample size increased from 1 000 to 2 000,the area under curve (AUC) increased by 2％,and further increased the sample size to 6 000,AUC increased by less than 1 ％.At this point maintaining the same sample size while increasing the proportion of difficult samples,AUC increased by 0.4％.The results of evaluation parameters of target detection showed that the recall rate of each test group was 73.6％,79.8％,79.5％,79.8％ and 83.3％,respectively,and the differences were statistically significant (x2 =71.936,P＜0.01).Among them,the recall rates of test group two,three and four were higher than that of test group one,and the differences were statistically significant (x2 =25.960,23.492 and 25.960,all P＜0.006 25),and the recall rate of test group five was higher than those of test group one,two,three and four,and the differences were statistically significant (x2=67.361,9.899,11.527 and 9.899;all P＜0.006 25).In addition,the precision rates of test group one,two,three,four and five were 87.9％,85.3％,90.2％,91.4％ and 89.2％,respectively,and the difference was statistically significant (x2=48.194,P＜0.01).The precision rates of test group three and five were higher than that of test group two,and the differences were statistically significant (x2 =24.508 and 15.223,both P＜0.006 25),and the precision rate of test group four was higher than those of test group one and two,and the differences were statistically significant (x2=13.524 and 39.120,both P＜0.006 25).As samples size and training difficulty increased,the values of F1-score and mean average precision increased steadily.Conclusions This study initially constructed a computer-assisted polyp detection system under colonoscopy.Currently the maximum sensitivity reached 93.5％,and the maximum recall rate reached 83.3％.Increasing the training set size may improve the polyp detection result to a certain degree,however it will reach a bottleneck.At this time,increasing the training difficulty can further improve the detection scores,especially the recall rate.