Objective To observe the change of homocysteine(Hcy)and lipoprotein-a[Lp(a)]of cerebral infarction patients and perform the correlation analysis on them.Methods The serum Hcy and Lp(a)levels were detected in 230 patients with cerebral in-farction and 90 healthy controls.The detection results were performed the comparison between the groups and the correlation analy-sis.Results The serum Hcy and Lp(a)levels in the overall cerebral infarction group and the cerebral infarction group with in-creased Hcy were significantly higher than those in the healthy controls(P <0.01).The serum Hcy and Lp(a)levels in the cerebral infarction group without increased serum Hcy had no statistical difference compared with the healthy control group(P >0.05).The serum Hcy and Lp(a)levels in the overall cerebral infarction group had no statistical difference compared with the cerebral infarc-tion group with increased Hcy(P >0.05).The serum Hcy and Lp(a)levels in the overall cerebral infarction group and the cerebral infarction group with increased Hcy had statistical difference compared with the cerebral infarction group without increased Hcy (P <0.01).The serum Hcy in the overall cerebral infarction group is positively correlated with Lp(a)(r =0.859,P <0.01).Con-clusion The increase of serum Hcy and Lp(a)levels is closely related with the occurrence of cerebral infarction and has certain val-ue in the diagnosis of cerebral infarction,moreover serum Hcy is positively correlated with Lp(a).

Objective To detect serum leucine aminopeptidase (LAP) level in the patients with hyperthyroidism for investiga‐ting the changes of LAP in the patients with thyroid dysfunction and its clinical significance .Methods 117 patients with hyperthy‐roidism were taken as the test group and 109 healthy people as the control group .The differences of various laboratory indexes were comparatively analyzed and the correlation between LAP with FT 3 ,FT4 and TSH was analyzed .117 patients with hyperthyroidism were divided into the liver damage group(52 cases) and non‐liver damage group(65 cases) and performed the LAP determination . Results The serum LAP ,FT3 ,FT4 and TSH levels in the hyperthyroidism whole group ,hyperthyroidism liver damage group and hyperthyroidism non‐liver damage group had statistically significant differences compared with those in the control group (P<0 .01) ,serum LAP was positively correlated with FT 3 and FT4 ,and negatively correlated with TSH ;LAP ,FT3 ,FT4 and TSH had no statistical differences between the hyperthyroidism live damage group and the hyperthyroidism non‐liver damage group (P>0 .05) .Conclusion The serum LAP content is closely related with the thyroid hormones and has certain clinical reference value for the diagnosis ,disease condition evaluation and medication .Lap can serve as an independent diagnostic indicator .

BACKGROUND:Finite element method is widely used in the femoral neck fracture, but the study concerning different fixation methods of femoral neck fracture is not much. OBJECTIVE:To analyze biomechanical properties of different fixation methods for femoral neck fracture using finite element analysis. METHODS:The femur of voluntters was scanned with CT, at thickness 0.6 mm, from the site above the greater trochanter of the femur. Scanning data were saved in .DICOM format. Data of right proximal femur were imported into Mimics software. Osteotomy was performed according to Pauwels I type fracture. Models of two tensile force screws, ful y threaded hol ow screw and proximal femoral locking plate were established. Three-dimensional finite element method was used to analyze stress distribution, stress concentration position, displacement distribution and maximum displacement in different models of femoral neck fracture with different internal fixation methods. RESULTS AND CONCLUSION:(1) The maximum stress value of two lag screws model was biggest. The maximum stress value of ful y threaded hol ow screw model was minimized. The maximum stresses of two lag screws model, ful y threaded hol ow screw model and proximal femoral locking plate model al were concentrated in the fixed end of fractures. (2) The femoral maximum stress of two lag screws model was biggest. The femoral maximum stress value of proximal femoral locking plate model was minimized. The femoral maximum stresses of two lag screws model, ful y threaded hol ow screw model and proximal femoral locking plate model al were concentrated in the medial femoral smal rotor near and medial femoral and fixation contact points. (3) The maximum displacement of two lag screws model was biggest. The maximum displacement of ful y threaded hol ow screw model was minimized. The maximum displacement of two lag screws model, ful y threaded hol ow screw model and proximal femoral locking plate model al was in the femoral head. (4) The maximum displacement value of two lag screws model fixed place was biggest. The maximum displacement value of ful y threaded hol ow screw model fixed place was minimized. The maximum displacement value of two lag screws model was biggest at femoral head. The maximum displacement value of ful y threaded hol ow screw model was minimized at femoral head. (5) Results showed that the treatment effect of ful y threaded hol ow screw on Pauwels I fractures was better than other two fixation methods.

Gallibacterium anatis,a member of the Pasteurellaceae family,constitutes a part of the normal micro-flora of the upper respiratory tract and the lower genital tract in chickens.However,increasing evidence indicate that G.anatis is also associated with a wide range of pathological changes,particularly in the reproductive organs,which leads to decreased egg production,lowered animal welfare and increased mortality.As a recently defined opportunistic pathogen limited focus has been placed on the pathogenesis and putative virulence factors permitting G.anatis to cause disease.One of the most studied virulence determinants is a large RTX-like toxin (GtxA),which has been demonstrated to induce a strong leukotoxic effect on avian macrophages.A number of fimbria of different sizes and shapes,particularly the F17-1ike fimbriaes,appear to be common in a diverse selection of G.anatis strains.The capsular material expressed possibly involved in serum resistance,metalloproteases capable of degrading immunoglobulins,hemagglutinins,and all factors which may promote biofilm formation are likely linked to the virulence of G.anatis.This review summarized the putative virulence factors described for this bacterium to date.

Background Long-term administration of glucocorticoid drugs induces ocular hypertension in susceptible individuals probably.It has been verified that 1 1β-hydroxysteroid dehydrogenase type 1 (11β-HSD1),glucocorticoid receptor (GR) and mineralocorticoid receptor (MR) can affect the generating of aqueous humor,but how they play the role in glucocorticoid-induced ocular hypertension is unclear.Objective This study was to investigate the relationship of expressions of 11β-HSD1 and steroids receptors in ciliary body and steroid-induced ocular hypertension.Methods Thirteen 12-16 week-old New Zealand albino rabbits were randomized to control group (5 rabbits) and experimental group (8 rabbits).Steroid-induced glaucoma models were induced by administration of subconjunctival injection of 5 mg dexamethasone solution(1 ml) and 0.5％ dexamethasone eye drops on alternate days in the left eyes for consecutive two months in the experimental group,and the equal volume of sterile normal saline solution was used in the same way in the control group.The successful criteria of model eyes was defined as rising of intraocular pressure (IOP) to ≥ 18 mmHg for over one week.Then,the animals were sacrificed by excessive anesthesia and the ciliary tissues were isolated for the assay of expressions of 1 1β-HSD1 protein by immunochemistry,and the expressions of 11β-HSD1 mRNA,GR mRNA and MR mRNA in ciliary body were semi-quantitatively detected by reverse transcription-PCR (RT-PCR).The experimental results were compared between the two groups.Results The IOP was normal in the first two weeks after administration of drugs,and no significant difference was found in IOP between the first week and the second week in the experimental group (q =0.469,P ＞0.05).From 3 through 5 weeks after injection,the IOP was gradually elevated,with the highest value of (18.87±0.77) mmHg in the fifth week.Significant differences were seen between the two groups at mentioned-above time points (q =10.535,20.353,28.681,all at P ＜ 0.01).11β-HSD1 protein was positively expressed in nonpigmented epithelial cells of ciliary tissue of rabbits in both groups,however,the expression intensity was weaker in the experimental group compared with the control group.The relative expressional values of MR mRNA,GR mRNA and 11β-HSD1 mRNA in the ciliary tissue were 2.22±0.78,0.64±0.11 and 0.47±0.16 in the experimental group,and those in the control group were 0.94±0.27,1.88±0.74 and 2.68±1.28,with significant differences between the two groups (t =6.070,P =0.004 ; t =5.170,P =0.007 ; t =5.540,P =0.005).Conclusions Corticosteroidinduced glaucoma probably is associated with the up-regulation of MR level and down-regulations of GR and 11β-HSD1 in ciliary body.

Objective To investigate the short-term acute rejection incidence of the recipients under the steroid-free immunosuppressive therapy after liver transplantation. Methods This retrospective study included 186 patients who were divided into two groups by random number table.The patients in no steroid group (the study group, n =94) received tacrolimus (Tac) with mycophemolate mofetil (MMF) or cyclosporine with MMF,and those in the steroid group (the control group,n =92) received the aforementioned immunosuppressive therapy combined with steroids.The acute rejection incidence was analyzed during six months post-transplantation.Results There was no significant difference in the gender,age,indication for transplantation,Child-Pugh score,MELD score,operating time,bleeding and transfusion volume during the operation,warm ischemia time and cold ischemia time between the two groups (P＞0.05).Liver biopsy was done on 9 cases of each group.The acute rejection incidence had no significant difference between the study group and the control group (5/94 vs 4/92,5.3％ vs 4.4％,P＞0.05).Conclusion The steroid-free immunosuppressive therapy after liver transplantation did not increase the short term acute rejection incidence.

Objective To investigate the clinical applications of dual-source dual-energy CT and dual-energy virtual unenhanced iodine distribution technology in thoracic tumor scans.Methods CT and clinical data of 58 cases of patients with thorax tumor were analyzed.The quality score,the noise,the average lesion CT values and radiation dose were compared between dual-energy group virtual unenhanced and conventional unenhanced image.The lesion benign and malignant differential diagnosis by strengthen the distribution of iodine value in dual-energy group and strengthen the value of manual measurement in conventional CT group were compared.Results The quality scores in virtual unenhanced and conventional unenhanced image were (4.62±0.52) and (4.71±0.46) points (t =2.319,P ＞ 0.05).The noise in virtual unenhanced images and conventional unenhanced image were (8.10±1.16) and (7.30±1.06) HU (t =5.246,P＜ 0.05).The effective dose in virtual unenhanced and in conventional plain were (5.18±0.96) and (5.55±1.18) mSv (t =4.005,P ＜ 0.05).CT value distribution of iodine was correlated with enhanced CT values.Conclusions The virtual unenhanced images can show well lung disease,which meet the diagnostic requirements and may be instead of the conventional plain chest potential value.Dual-energy iodine distribution of lesions can observe blood supply more directly and more sensitively,can quantityze expression of the extent of the lesions enhanced to provide richer information for clinical diagnosis of tumor lesions.

OBJECTIVE: To analyze the utilization of traditional Chinese medicine (TCM) injections in our hospital in order to provide reference for clinical rational use of TCM injection. METHODS: The utilization of TCM injection in our hospital from 2006 to 2008 was statistically analyzed in terms of consumption sum, DDDs and its order. RESULTS: The consumption sum and DDDs of TCM injection in our hospital increased year by year, especially stasis-removing agents and antitumor drug. Over the 3 years the proportion of consumption sum of TCM injections in the total consumption sum were 57.3%, 59.4% and 55.9%, respectively. There was poor synchrony between consumption sum order and DDDs order. CONCLUSION: TCM injections are used rationally in our hospital. In addition, safety reevaluation of TCM injection should be improved.

Objective To investigate the co-morbid state of mental disorder in patients with functional dyspepsia (FD) in a tertiary general hospital in China and explore the risk factors of the co-morbidity of FD and major depressive disorder(MDD).Methods This study was designed as a bilateral evaluation and structural psychiatric interview.Patients with FD and newly diagnosed outpatients with MDD in gastrointestinal and psychological departments were enrolled.FD was defined by Rome Ⅲ criteria.The questionnaires including symptoms of FGIDs Roma Ⅲ,the composite international diagnostic interview (CIDI 3.0) Chinese version,the Hamilton depression/anxiety rating scale (HAMD/HAMA),Montgomery-Asberg depression scale (MADRS) were involved in this study.All patients were administered by well trained physicians and investigators in face to face interview.Results A total of 69 patients have completed the valid questionnaires and interview,among whom 42 met FD criteria (FD group) and 27 with FD co-morbid MDD (co-morbid group).Male to female ratios were 17∶25 and 10∶ 17,the mean age (42.1 ± 13.3) and (43.1 ± 15.3)years respectively.The life-long co-morbidity of FD and MDD was 39.1％ (27/69),while 31.9％ (22/69) patients with FD were accompanied with other mental disorders rather than MDD.Patients in FD co-morbid MDD group had significantly more severe depression than those in FD group with HAMD-17 score 21.6 ± 8.0 and 14.5 ± 7.6,HAMA score 21.2 ± 9.0 and 14.9 ± 7.5 respectively (all P ＜ 0.01).Logistic regression analysis showed that high score of MADRS and complication with functional anorectal disorder may be the risk factors of FD co-morbid MDD [OR (95％ CI) 1.12 (1.06-1.19) and 7.07(1.12-44.53)].Conclusions The co-morbidity rate of FD with MDD in our hospital is high.In addition to MDD,other mental disorders also need to be paid attention in FD patients.FD co-morbid MDD patients suffered more severe depression and anxiety.The high score of MADRS and complication with functional anorectal disorder seem to be the risk factors of co-morbidity of FD and MDD.

Objective To explore the effects of targeted silencing of the chemokine receptor 7 (CXCR7)gene on the invasion and migration of the melanoma cell line M14. Methods Western-blot analysis was performed to determine the protein expression of CXCR7 in melanoma cell lines M14 and A375, and CXCR7-overexpressing M14 cells were used in this study. Cultured M14 cells were divided into three groups: experimental group transfected with a small interfering RNA(siRNA)targeting CXCR7(CXCR7-siRNA), negative control group transfected with a negative control siRNA, blank control group receiving no treatment. Real-time quantitative PCR and Western-blot analysis were conducted to determine the mRNA and protein expressions of CXCR7 respectively in M14 cells, Transwell chambers were used to evaluate the invasive activity of M14 cells, and wound healing assay to estimate the migratory activity of M14 cells. Results The experimental group showed significantly decreased mRNA and protein expressions of CXCR7 compared with the negative control group and blank control group (CXCR7 mRNA: 0.412 ± 0.023 vs. 1.211 ± 0.117 and 1.000 ± 0.102, F = 30.068, P = 0.001; CXCR7 protein: 0.144 ± 0.005 vs. 1 and 1.016 ± 0.004, F =11 485.5, P = 0.000). The number of M14 cells crossing the polycarbonate membrane per high-power field (× 200)was significantly smaller in the experimental group than in the negative control group and blank control group (20.617 ± 1.503 vs. 42.000 ± 6.018 and 43.627 ± 2.152, F = 32.416, P = 0.001). Similarly, the number of migrating M14 cells in wound healing assay was significantly decreased in the experimental group compared with the negative control group and blank control group (15.00 ± 1.10 vs. 44.90 ± 2.20 and 45.30 ± 2.30, F = 2 411.945, P = 0.000). Conclusion Targeted silencing of the CXCR7 gene can significantly inhibit the invasion and migration of M14 cells in vitro, which may provide a potential target for the treatment of cutaneous melanoma.