Objective To compare the morphological differences in soleus between tail-suspended and 30-month-old rats.Methods Fourty-two male rats were randomly divided into seven groups:5 d,7 d and 14 d tail-suspended and their synchronous control groups,30-month-old group.The cross-sectional area(CSA)and percentage of MHC Ⅰ/Ⅱ fibers were measured in immunohistochemically stained sections and CSA was normalized by body weight.Results Wet weight,relative wet weight,CSA and normalized CSA in unloaded soleus decreased significantly as compared with the synchronous control.The percentage of MHC Ⅰ fibers decreased,but that of MHC Ⅱ fibers increased in unloaded soleus.The wet weight and CSA of soleus in 30-month-old rats increased,but the relative wet weight and normalized CSA reduced significantly as compared with 14-day synchronous control.The relative wet weight and normalized CSA of soleus in 30-month-old rat were similar to that of 14 d tail-suspended group.The percentage of MHC Ⅰ/Ⅱ fibers of soleus in 30-month-old rat and in 5 d,7 d,and 14 d of synchronous control groups kept constant value.Conclusion It's suggested that the atrophic process of soleus is slower in 30-month-old rats than that in the tail-suspended rates.The reduction of soleus relative wet weight and normalized CSA appears early in aged rats,but the absolute and relative wet weight of soleus decrease simultaneously in tail-suspended rats.

Objective To study human sperm acrosome by means of flurescein labeled pisum sativum agglutinin technique (FITC PSA) to evaluate the fertile capacity of human sperm. Methods The acrosome intact rate was assessed in 58 infertile men and in 46 fertile ones.Human zona pelucida (zp) induced acrosome reaction was detected in 7 infertile and 7 fertile men. Results The acrosome intact rate and the acrosome reaction rate were both higher in the fertile group than those in the infertile group ( P

Morning meeting is regular in clinical departments.Through enriching meeting contents, exten-ding meeting function, morning meeting becomes an effective internal management tool and platform in clinical depart-ments, and plays a positive role in the culture construction of the department, quality management, personnel train-ing, etc.

Objective: To investigate the expression and prognostic significance of insulin-like growth factor binding protein 5 (IGFBP5) in gastric adenocarcinoma (GAC). Methods:IGFBP5 expression in tissue samples from 236 GAC patients was analyzed us-ing immunohistochemical methods. These patients had undergone surgical resection between 20003 and 2006 in Sun Yat-Sen Universi-ty Cancer Center. The relationship between IGFBP5 expression and clinicopathological factors in the 236 GAC patients was analyzed using Pearson correlation analysis. The significance of IGFBP5 in predicting the survival status of these patients was analyzed using Ka-plan-Meier survival analysis and Cox's proportional hazards regression model. Results:Immunohistochemical staining data indicated that IGFBP5 expression was significantly decreased in 159 of the total GAC cases (67.4%). Of the 62 cases with well-and moderately differentiated GAC, 31 (50%) exhibited reduced IGFBP5 expression. Of the 174 cases with poorly differentiated GAC, 128 showed re-duced IGFBP5 expression. Reduced IGFBP5 expression was also observed in female patients and in patients with tumors over 5 cm in size or with poorly differentiated tumors (P<0.05). The reduced expression of IGFBP5 was common in the tumors that were staged as T3+4a/b andⅢ/Ⅳ(P<0.05). Kaplan-Meier survival analysis revealed that the reduced expression of IGFBP5 was associated with poor prognosis in GAC patients (P<0.001). Cox regression analysis identified IGFBP5 expression as an independent prognostic factor for the overall survival of these cancer patients (HR=1.897, P=0.029). Conclusion: IGFBP5 expression is reduced in GAC tissues, and IGFBP5 independently predicts an unfavorable prognosis in GAC patients.

Objective To observe the effect of electromyographic (EMG) biofeedback on lower limbs motor function in stroke patients with hemiplegia. Methods 60 stroke patients with hemiplegia were divided into treatment group (n=30) and control group (n=30). Both groups accepted exercise therapy, and the treatment group accpted EMG biofeedback in addition. They were assessed with Fugl-Meyer Assessment (FMA), Berg Balance Scale (BBS), and Barthel Index (BI) before and 4 weeks after treatment. Results There was no significant difference between 2 groups in the scores of FMA, BBS and BI before treatments (P>0.05). All the scores significantly improved after treatments in both groups (P<0.05), and improved more in the treatment group than in the control group (P<0.05). Conclusion Electromyographic biofeedback can further improve lower limbs motor function, balance and activities of daily living of stroke patients with hemiplegia.

Objective: To explore the association of the single nucleotide polymorphisms (SNPs) in N-formylpeptide receptor (FPR) gene with the susceptibility of aggressive periodontitis (AgP). Methods: A total of 94 AgP patients and 73 healthy controls were entered into the study. Peripheral blood sample was obtained from each subject by venepuncture. Genomic DNA was isolated from each sample.The target fragment of FPR gene was amplified by PCR. The SNPs in FPR gene were detected by denature high performance liquid chromatography ( DHPLC) combined with DNA sequencing. Results: There were two non-synonymous SNPs in the 370 bp FPR gene fragment;289C/A and 301G/C. The 289C/Awas a novel SNP. No variation in nucleotides 329 and 378 was detected. There were no statistically significant differences in distributions of the genotypes and alleles for FPR289 and FPR301 between AgP patients and healthy controls. Using multivariate logistic regression (adjusted for age and gender) , it was showed that the adjusted Ors of AgP for the C~+ genotype and allele C of FPR301 combined with smoking were 5.74 and 5.20 respectively. Conclusion: The presence of the C~+ genotype/allele C of FPR301 together with smoking conferred a higher risk for AgP. The result suggests that the SNPs in FPR gene may not be associated with the susceptibility of AgP in Chinese.

Objective To evaluate the indications,techniques and effects of high speed drill assisted cervical pedicle screw-rod system in treatment of cervical interlocking dislocation.Methods A retrospective review was made on data of 13 cases of cervical interlocking dislocation undergone pedicle screw-rod fixation and reduction with assistance of high speed drills from December 2006 to July 2011.Dislocation localized in C3/4 (n =3),C4/5 (n =5),C5/6 (n =4) and C6/7 (n =1) respectively.Causes for injury contained cervical hyperextension due to traffic accidents (n =7) and a fall from the height (n =6).Two remained neurological intact,seven were combined with syndrome of central canal damage,and four had paraplegia.All the 13 cases received posterior pedicle screw fixation and reduction within 7 days after injury.Pedicle screws were implanted on adjacent segment of cervical spine with unlocking the interlocked small joints by a distraction device.Results All 13 cases obtained good reduction,including eight with complete anatomic reduction and five with 1-2 mm of vertebral slight slippage.Fifty-two screws were inserted and 49 pedicle screws were put in place except for the excursion in three pedicle screws on the postoperative radiographic and CT scans.There was no injury of spinal cord,nerve root or vertebral artery during operation.The patients showed significant improvement in sensory and motor function of the upper extremities in the follow-up of 12-36 months.One case had screw breakage at postoperative three months with no nerve symptoms.Conclusion High speed drill assisted pedicle screw-rod system is suitable for treatment of cervical interlocking dislocation,for its reduction process accords with the biomechanics and allows decompression therapy.

To improve students' experimental research skills,innovative consciousness,promote the construction of functional experimental center,we established series of “comprehensive,contrivable,innovative” experiments in medical students.

Objective:To analyze the serum IgG titers to Aggregatibacter actinomycetemcomitans ( Aa ) and associated factors in patients with aggressive periodontitis (AgP).Methods:Venous blood samples were collected from 62 AgP patients and 45 periodontal healthy controls , unstimulated whole saliva and pooled subgingival plaque samples of AgP patients were also collected for the detection of Aa ( PCR method) .Serum IgG titers to Aa serotype c were measured by enzyme-linked immunosorbnent assay ( ELISA) .Results:The detection rates of serum IgG to Aa serotype c in the AgP patients and the healthy controls were both 100%.The AgP patients exhibited significantly higher IgG titers to Aa serotype c than the healthy controls (11.1 ±1.9 vs.9.1 ±1.8, P<0.01).There was no significant difference in serum IgG levels to Aa serotype c and in the prevalence of high-responding patients to Aa serotype c between the incisor-first molar type AgP patients and generalized AgP patients .Serum IgG titers to Aa serotype c in the Aa-positive AgP patients ( the patients who were Aa-positive in subgingival plaque or saliva ) were sig-nificantly higher than those of the Aa-negative patients (11.9 ±1.3 vs.10.7 ±2.1, P<0.05).Con-clusion:Serotype c was the main serotype of Aa in Chinese patients with AgP .Serum IgG responses in generalized AgP patients were comparable to those in incisor-first molar type AgP patients .

Objective To discuss Si tactic of breathing exercises on the rehabilitation of lung function, dyspnea, distance of 6-minute walk distance (6MWD), respiratory muscle endurance and quality of life in stable patients with chronic obstructive pulmonary disease (COPD). Methods 63 patients with COPD were divided into experimental group with 31 cases and control group with 32 cases according to random digital table method. The experimental group were given routine treatment and nursing care, take Si tactic of breathing exercises. The control group were given routine treatment and nursing care only. Both groups were given treatment for 4 months. The indexes of lung function (FEV1, FEV1%, FEV1/FVC), scores of the Modified Medical Research Council Scale (MMRC), 6MWD, scores of Saint-George′s Respiratory Questionnaire (SGRQ), maximal voluntary ventilation (MVV) changes before and after the therapy were measured. Results After intervention, the lung function as measured by FEV1, MVV, 6MWD showed a significant improvement in the experimental group, and was higher than that in the control group[(1.42±0.43) L vs.(1.22±0.32) L and(1.21±0.45) L,(52.39±14.21) L vs.(47.20±14.59) L and (43.65±11.89) L, (288.36±71.70) m vs.(244.42±71.50) m and (250.56 ±79.25) m, P<0.05]; MMRC scores, SGRQ scores, activities and daily life part score were lower after intervention and was lower than that in the control group [(2.63 ±1.00) points vs. (3.21 ±0.92) points and (3.14±1.12) points, (44.38±5.23) points vs. (54.74±5.73) points and (52.87±5.49) points, (41.25± 6.03) pints vs.(66.48±6.38) points and (64.13±5.34) points, (28.00±7.34) points vs. (44.87±4.86) points and (42.31 ±9.12) points, P<0.05]. Conclusions For COPD patients in stable stage, Si tactic of breathing exercises can improve the pulmonary function and alleviate dyspnea, enhance exercise endurance and respiratory endurance, thereby improve the quality of life of patients, so this is one of the method for comprehensive pulmonary rehabilitation in the future.