Objective To study the inhibiting effect of genistein and cisplatin on tumor recurrence and metastasis after hepatectomy in mice. Methods A posthepatectomy high-metastatic-and-recurrent athymic mouse model simulating human HCC was established.Genistein,cisplatin,and combination genistein and cisplafin respectively were given intraperitoneally.Mice were sacrificed after 4 weeks,the volume and pulmonary metastasis of the recurrent tumor was observed.Caculate q value using Jin Zhengjun formula was used to evaluate the synergistic effect of combination genistein and cisplatin.Immunohistochemistry and real time fluorescent quantitation PCR were used to detect the expression of MMP2 and MMP-2 mRNA in liver recurrent tumor. Results Compared with single drug group,mice in genistein combined with cisplatin group had smaller liver recurrent focus volume,less pulmonary metastasis.Genistein and cisplatin displayed additional inhibiting effect on tumor recurrence and metastasis after hepatectomy in vivo,and displayed synergistic inhibiting effect on pulmonary metastasis.The MMP-2 expression of the recurrent tumor in single cisplatin group increased compared with control group(t=26.17、P＜0.05),while in single genistein group and genistein and cisplatin combined group it decreased(t=5.58,13.90,P＜0.05).The expression of MMP-2 mRNA in genistein group was 90%the level of the control group,in cisplatin group it was 2.06 times that of the control group,in combination genistein and cisplatin group it was 44%the level of the control group. Conclusions In vivo,genistein reinforces the effect of cisplatin in inhibiting tumor recurrence and metastasis after hepatectomy,possibly by a mechanism in which genistein inhibits the up-regulation of MMP-2 induced by cisplatin.

ObjectiveTo investigate bone marrow mesenchymal stem cells(BMSC) express brain derived neurotrophic factor(BDNF) and nerve growth factor(NGF) and their protective effect for neural stem cells (NSCs).MethodsBMSC were obtained from rat tibiae and femurs and centrifuged with Ficoll. The passage 3 cells were chosen to make immunocytochemical stain for CD44, CD71 and CD45. The expression of BDNF and NGF was detected in BMSC with RT-PCR, as well as in the media with ELISA. The media that cultured BMSC were collected as BMSC condition media. NSCs were obtained from cerebral cortex of new-born rat and cultured in vitro. After different ratio of BMSC condition midia were added, NSCs were induced to apoptosis with heat-shock, then NSCs were dyed with Annexin V-FITC/PI apoptosis kit and apoptosis rates were tested with flow cytometry. ResultsBMSC were CD44(+), CD45(-), CD71(+) and expressed BDNF and NGF mRNA. BDNF and NGF could be tested in the media of cultured BMSC and increase with cultured time. BMSC condition media could reduce the ratio of heat-induced apoptosis of NSCs, and more BMSC condition media showed better effect. ConclusionBMSC can express neurotrophic factores and protect neural stem cells from heat-induced apoptosis.

Objective To investigate serum uric acid (UA) levels and related clinical features in patients with high risk syndrome of neuromyelitis optica. Methods UA levels were measured in 51 patients with high risk syndrome of neuromyelitis optica including 34 with longitudinally extensive transverse myelitis (LETM) and 17 with optic neuritis (ON), 48 with neuromyelitis optica (NMO), 45 with other neurological diseases (OND) and 65 with healthy controls (HC). The disability severity was assessed by the expanded disability status scale (EDSS). Spinal lesions were viewed by MRI. Serum aquaporin-4(AQP4) antibody was tested in cell based immunofluorescence assay. Results Serum UA levels in LETM ( ( 189. 84 ±85. 65) μmol/L) and ON patients ( (222. 12 ±61.68) μmol/L) were significantly lower than that in OND ((315.90±71.36) μ mol/L) and HC ((291.05 ±76.64) μ mol/L) subjects (P＜0.01). No difference was found between LETM, ON and NMO groups. UA levels were significantly lower in females ( ( 158.24 ±55.92), (187.00±47.52), (198.21 ±62.62), (274.51 ±70.66)and (243.26±60.65) μmol/L)than in males ( ( 262. 09 ± 101.63 ), ( 262. 45 ± 62. 13 ), ( 298.90 ± 74. 14 ), ( 355.37 ± 50. 30 ) and (340. 34 ±58. 23) μmol/L) in all groups (t=3. 183, 2.578, 4.356, 4.365 and 6.579, all P＜0.05).UA levels in patients with high risk syndrome of NMO were not correlated with mono or relapse course,duration or status of serum AQP4 antibody. UA were negatively correlated with EDSS in patients with LETM (r= -0.714, P＜0.01). Conclusion Lower serum UA levels were found in patients with high risk syndrome of NMO and related to more severe symptoms in LETM group.

Objective To investigate serum uric acid (UA) levels and related clinical characteristics of neuromyelitis optica (NMO). Methods The serum uric acid levels were measured in 65 patients with NMO, compared to control groups which were 76 cases with multiple sclerosis ( MS), 126 cases with cerebral vascular diseases (CVD) and 130 healthy controls(HC). The disability severity in NMO was assessed by the Expanded Disability Status Scale (EDSS). Magnetic resonance imaging ( MRI ) was performed to strengthen assessment the involved lesions. Serum AQP4 antibody was tested in a cell based immunofluorescence assay. Results In male groups, serum UA levels in NMO patients [ (298.90±74.14) μmol/L] were significantly lower than that in CVD [ (355.37 ±50. 30) μmol/L] and HC subjects [ (340.33 ± 58.23 ) μmol/L, P ＜ 0.05 ]. No difference was found between NMO and MS [ ( 292.36 ±92.95) μmol/L] groups. In female groups, serum UA levels in NMO patients [(198.21 ± 62.62)μmol/L] were significantly lower than that in CVD [(274.51 ± 70.66) μmol/L] and HC subjects [(243.26 ±60.65) μmol/L,P ＜0.05]. No difference was found between NMO and MS [(232.29 ±71.95 ) μmol/L ] groups. UA levels were significantly lower in females [ ( 198.21 ± 62. 62) μ mol/L] than in males [ (298.90 ±74.14) μmol/L]. UA levels were significantly lower in patients with EDSS≥5 [ ( 195.48 ± 83.70 )μmol/L] than EDSS ＜ 5 [ (241.00 ± 63.20)μmol/L] NMO patients. In our study UA levels were not correlated with longitude of spinal lesions, activity revealed by MRI and AQP4 antibody tires.Conclusion Lower serum UA levels were found in patients with NMO and related to more severe symptoms.

Objective:AFM1-BSA and AFM1-OVA were synthesized and then identified in this experiment.Methods: Using oximation method ,AFM1 was transformed to oxime compounds while the reaction process was monitored via TLC method aiming to identify the compounds.Coupled with carrier protein BSA and OVA respectively , we obtained AFM1-BSA and AFM1-OVA, then identified synthetic antigen via UV spectrophotometry and SDS-PAGE.Antigens were injected into experimental animals , finally obtaining the murine multi-antiserum.Eventually , the multi-antiserums were detected via indirect inhibition ELISA method to judge whether the antigens were effectively or not.Results:After oximation reaction ,the migration distance of oxime compounds in the thin layer plate was shorter.The maximum absorption peak of AFM1-BSA occurred in 274 nm,and was inconsistent with both UV absorption peaks of BSA and AFM 1.The electrophoretic velocity of AFM 1-BSA was less than that of BSA.All the titers of three immunized mice were 1×10-4 approximately;the multi-antiserum from No.3 sample had the best sensitivity ,its IC50 was 359.9 ng/ml.Conclusion:In this study,we obtained AFM1 artificial antigen and murine multi-antiserum of high sensitivity.

Objective: To investigate the expression of midkine (MK) gene in childhood acute lymphoblastic leukemia (ALL) and the clinical significance of MK thereof. Methods: The real-time PCR was used to assay MK gene expression in bone marrow of 15 normal children and 124 childhood ALL patients, including 73 patients in progression and 51 patients in complete remission. Three stratifications of progressing patients were established by prognostic factors such as white blood cell count, age, immunopherotype and response to the 7-day prednisolone prephase. Results: The significant statistic difference in MK gene expression was found between the progression group, the complete remission group and the normal group (P< 0.01). The MK gene expression was over-expressed in B-ALL than that in normal group. Furthermore, there was statistic difference between B-ALL and T-ALL (P< 0.01). But there was no difference in MK mRNA expression between the normal control and T-ALL. The assay in risk stratifications showed that the levels of MK gene were higher in standard risk group and mid-risk group than that in high risk group (P< 0.01 and P< 0.05, respectively). There was no significant difference between standard risk group and mid -risk group (P = 0.32). No correlations were found between MK level and age, gender or lactate dehydrogenase level in serum. The expression of MK was significantly lower in the group with higher white blood cells(WBC≥ 25×10~9/L) than that with lower WBC (WBC<25×l0~9/L) in peripheral blood (P< 0.05). Conclusion: The high level of MK was a favorable prognostic factor in childhood acute lymphoblastic leukemia patients.

Objective:To investigate the relationship between self-control and obsessive-compulsive symptoms(OCS), and the mediating role of procrastination and anxiety in this relation.Methods:Totally 6 367 Chinese college students were recruited to complete the Chinese version of the self-control scale, the Aitken procrastination inventory, and the symptom checklist-90.Descriptive analysis and Pearson correlation were carried out using SPSS 23.0.Mplus 7.4 was used to test the model fit.The mediating effects were tested using the Bootstrap method.Results:Pearson correlation analysis showed that there were significant correlations among self-control, procrastination, anxiety, and obsessive-compulsive symptoms ( r=-0.71-0.78, P<0.01). Mediation modeling analysis showed that the total indirect effect of self-control on OCS was -0.303, accounting for 63.13% of the total effect.The mediating effect of procrastination between self-control and OCS was -0.045, accounting for 9.38% of the total effect.The mediating effect of anxiety between self-control and OCS was -0.239, accounting for 49.79% of the total effect.Moreover, the chain mediating effect of procrastination and anxiety between self-control and OCS was also significant, with an effect value of -0.019, accounting for 3.96% of the total effect. Conclusion:Self-control can negatively predict OCS, procrastination and anxiety play a chain mediating role in the effect of self-control on OCS.

Objective:To investigate the effects of rituximab on lymphocytes and immunoglobulin in the treatment of focal segmental glomerulosclerosis (FSGS) and minimal change disease (MCD).Methods:The subjects were FSGS and MCD patients admitted to Ruijin Hospital affiliated to Shanghai Jiaotong University on July 1, 2014 and July 1, 2019. All the enrolled patients were confirmed by clinical examination and renal biopsy, and received rituximab treatment (4 infusions of 375 mg/m 2 with the interval of 7-14 d). The levels of immunoglobulin IgA, IgG, IgM, and lymphocytes of CD19 +, CD20 +, CD3 +, CD3 +CD4 +, CD3 +CD8 + and natural killer cells (CD56 +CD16 +) were compared between baseline and the third month, the sixth month, the ninth month and the twelfth month after treatment. Results:Ninety-six patients with FSGS or MCD were enrolled in this study. The midian age was 28 years old (14-77 years old). The ratio of men to woman was 1.8∶1. There were 65 cases of MCD and 31 cases of FSGS. After rituximab treatment, the 24 h-proteinuria was significantly lower than that before treatment, and the serum albumin level was increased (both P<0.05). After rituximab treatment of 3 months, 6 months, 9 months and 12 months, CD19 + and CD20 + lymphocyte counts were significantly decreased (all P<0.01), and gradually recovered after 6 months. Compared with baseline, at 3, 6, 9, 12 months after rituximab treatment, the level of blood IgG was significantly increased ( P=0.004,<0.001,<0.001,<0.001, respectively), and the level of blood IgM was significantly decreased ( P<0.001, =0.008, =0.005,<0.001, respectively) but the median level still within the normal range (400-3 450 mg/L). The level of blood IgA was not significantly changed (all P<0.05). T lymphocytes (CD3 +, CD3 +CD4 + and CD3 +CD8 +) and natural killer cells (CD56 +CD16 +) showed no significant difference from baseline (all P>0.05). Conclusions:Rituximab can effectively eliminate CD19 + and CD20 + lymphocytes, and has little influence on peripheral blood lymphocyte count and immunoglobulin level except CD19 + and CD20 + lymphocytes. The standard administration of rituximab is safe for patients with FSGS and MCD.

Objective: To compare the biomechanical performance between the single- versus double-threaded cannulated screws in the treatment of femoral neck fractures of Pauwels type Ⅲ. Methods: Models of femoral neck fracture of Pauwels type Ⅲ (70°) were made of the Sawbone synthetic composite femurs. All specimens were divided into 2 groups (n=12). Group A was fixated with single-threaded cannulated screws and group B with double-threaded cannulated screws, both in an inverted triangle configuration. The screws ranged from 90 to 95 mm in length and from 7.3 to 7.5 mm in diameter. All the specimens were subjected to axial stiffness and failure load tests with 7° valgus (simulating normal two-legged weight-bearing stance) and 25° valgus (simulating normal one-legged weight-bearing stance) and torsion test as well. The 2 groups were compared in the torques at axial stiffness angles of 1°, 2°, 3°, 5° and 7°. Results: Group B had significantly greater axial stiffness at 7° valgus and 25° valgus (89±26 N/mm and 128±37 N/mm) and failure load (1,154±368 N) than group A did (36±12 N/mm and 47±16 N/mm; 688±94 N) (P< 0.05). The torques increased with the increase in rotation angle in both groups. However, the torques in group B (3.26±0.96, 4.16±1.23, 4.64±1.13, 5.59±1.26 and 6.53±1.47 N·m) were all significantly larger than in group A (1.44±0.19, 2.03±0.41, 2.33±0.62, 2.74±0.87 and 3.05±1.07 N·m) (P<0.05). Conclusion Double-threaded cannulated screws may provide better biomechanical stability than single-threaded ones, due to their substantial improvement in anti-compression and anti-rotation performance.

Objective: To evaluate the efficacy and safety of 0.05% atropine eye drops for retarding myopia progression and ocular axial elongation in school children,and to provide a reference for the relevant prevention and control measures of myopia. Methods: A total of 188 children with myopia were randomly assigned to the experimental group(93) or to the control group(95). During the phase (first 24 months) I,children received treatment in each eye once a day. During the phase II (from 25th to the 36th month),no treatment was given. Standardized eye examinations including spherical equivalent(SE),axial length(AL),intraocular pressure(IOP) and potential atropine-related side effect assessment were performed every 6 months. Results: In phase I, the annual progression rates of equivalent spherical degree [(-0.35±0.21)D/year] and axial length [(0.11±0.07)mm/year] in the experimental group were significantly lower than those in the control group [(-0.83±0.26)D/year and (0.37±0.22)mm/year] (P<0.05). After withdrawal of atropine eye drops (phase II), the equivalent spherical degree progression rate [(-0.40±0.29)D/year] and axial length progression rate [(0.10±0.04)mm/year] in the experimental group were significantly lower than those in the control group [(0.73±0.40)D/year and (0.30±0.11)mm/year]. No serious adverse events associated with atropine were found during the follow up period. After the withdrawal of atropine, the pupil size, near visual acuity and adjustment gradually returned to the pre-treatment level. Conclusion 0.05% atropine eye drops may not only maintain the efficacy and reduce potential side effects of atropine but also significantly increase the compliance of children,0.05% atropine is a safe and effective treatment for retarding myopic progression in moderate myopia.