Objective To evaluate the expressive variety of NGF gene in injured sciatic nerves of rat. Methods For hemi-quanti- tative analysis, RT-PCR method was used in the detection of the levels of NGF mRNA in the distal stumps at 1 day and 1, 2, 4 weeks following transection of sciatic nerve. Results The 1evel of NGF mRNA was low in the normal sciatic nerve. But it was increased in the distal stump after sciatic nerve transection. The biphasic increase in NGF mRNA was characterized by a first very rapid and transient increase peaking at ist day after lesion, than a second prolonged and slow elevation starting around ist weed after lesion. Conclusion The process in NGF gene expression after sciatic nerve lesion was biphasicly increased.

Objective:To investigate the value of synthetic MRI for evaluating lumbar intervertebral disc degeneration.Methods:A total of 414 lumbar intervertebral discs from 85 patients were included prospectively from September 2018 to February 2019 in First Affiliated Hospital of China Medical University. The T 1, T 2 and proton density (PD) mapping were generated from synthetic MRI. Two doctors measured the T 1, T 2 and PD values to evaluate intraobserver agreement by using ICC. For Pfirrmann grade comparisons, the variables with normal distribution were analyzed with the one-way analysis of variance, whereas those with skewed distribution were analyzed with the Kruskal-Wallis H test. Furthermore, the ROC curves were used on significant parameters to evaluate their diagnostic efficacy. The Z test was used to compare the differences of area under the ROC curves (AUC). Results:The color of the quantitative mapping changed along with the increase of the Pfirrmann grade of the intervertebral discs, which corresponded to the decrease of the T 2WI signal intensity. The ICC values of the quantitative values of nucleus pulposus indicated excellent agreement (ICC>0.900), followed by anterior annulus fibrosus (ICC>0.700) and then the posterior annulus fibrosus (ICC>0.600). The results of the adjacent Pfirrmann grade comparisons were as follows: between Pfirrmann grade Ⅰ and Ⅱ, the differences of T 2 and PD values of nucleus pulposus were statistically significant ( P=0.004 and P<0.001, respectively); between Pfirrmann grade Ⅱ and Ⅲ, the differences of T 1, T 2 and PD values of nucleus pulposus were statistically significant (all P<0.001); between Pfirrmann grade Ⅲ to Ⅳ, the T 1, T 2 and PD values of nucleus pulposus (all P<0.001) and the T 1 and PD values of posterior annulus fibrosus ( P=0.025, P<0.001, respectively) had statistically significant differences; between Pfirrmann grade Ⅳ to Ⅴ, the difference of T 2 values of nucleus pulposus were statistically significant ( P=0.031). The AUC of T 2 values of nucleus pulposus between Pfirrmann grade Ⅱ to Ⅲ and grade Ⅳ to V were higher than those of the PD values ( Z=2.443, 3.591 and P=0.015,<0.001). Conclusions:Synthetic MRI can quantitatively evaluate lumbar disc degeneration, in which the T 2 value of nucleus pulposus may be the most effective parameter with high repeatability.

Objective To explore the influence of humanistic care on psychological stress in diag-nostic process for patients with lung cancer. Methods 40 suspicious lung cancer patients were divided into the experimental group and the control group according to admission sequence. The control group ac-cepted routine care, the experimental group received humanistic care based upon routine care. Zung's self-rating anxiety scale(SAS) and self- rating depression scale(SDS) were applied in two groups at admission day and 2 days post- diagnosis, the results underwent comparison with norm using t test. Results On ad-mission day 2 groups showed no significant difference in SAS and SDS, 2 days post- diagnosis the SAS and SDS score were evidently lower than those of the control group. Conclusions Lung cancer patients were in anxiety and depression condition during diagnostic process, and humanistic care could effectively relieve their psychological stress.

OBJECTIVE:To investigate characteristics and regularity of ADR induced by antineoplastic drugs and provide ref-erence for the safe drug use. METHODS:7 417 ADR reports induced by antineoplastic drugs from 91 hospitals from 2009 to 2013 were collected in the ADR monitoring center of PLA. According to the classification in national ADR monitoring cencer,Excel soft-ware was performed to statistically analyze the data. RESULTS:Among 7 417 ADR reports,1 475 were severe ADR(19.89%), 196 were the new and general ADR(2.64%),and 44 were new and severe ADR(0.59%);the elderly patients aged from 45-59 years accounted for the highest proportion (41.01%);intravenous administration was the main administration route causing ADR (88.96%);the incidence of antineoplastic drugs was higher in plant-derived drugs(26.55%),platinum drugs(24.86%)and an-ti-metabolism drugs (19.46%);ADR mostly manifested as lesions of digestive system (38.80%),blood system (16.53%) and general system(12.79%);43.60%ADR occurred within 12 hours after administration. CONCLUSIONS:Highly poisonous,nar-row-range security antineoplastic drugs could easily induce ADR. Risk prevention of antineoplastic drugs should be strengthened to undertake monitoring for high-risk patients and antineoplastic drugs,and severe ADR. More attention should be attached to the reac-tions after 12 h administration to reduce ADR incidence as much as possible.

Aim To investigate the antitumor and antiangiogenic effects of combined low-dose cyclophosphamide(CTX)and recombined VEGF protein vaccine.Methods In this experiment,H22 hepatocellular carcinoma model was established in BALB/c mice.Mice were randomly divided into four groups: control group,CTX group(CTX),VEGF protein vaccine group(V2)and CTX plus V2 group(CTX+V2).The anti-tumor efficacy and antiangiogenic effect were investigated using a subcutaneous tumor model and an intradermal tumor model.Western blot and ELISAwere further adopted to detect the specific anti-VEGF antibody.Results CTX+V2 group displayed a lower tumor volume and tumor weight than either the single therapy group in the subcutaneous tumor model(P<005 vs V2,P<001 vs CTX).Meanwhile,CTX+V2 was more effective for antagonizing tumor-associated angiogenesis compared with either the single therapy(P<005 vs V2,P<001 vs CTX).After CTX+V2 immunization,high titer of anti-VEGF antibody was detected by ELISA and verified by Western blot.Conclusion The therapy of CTX combined with V2 has significant synergistic effect against H22 hepatocellular carcinoma.

AIM: To investigate the effect of extracorporeal membrane oxygenation (ECMO) on the pharmacokinetics/pharmacodynamics (PK/PD) of daptomycin in critically ill patients. METHODS: Twenty four patients with severe infection in our hospital were randomly selected and divided into ECMO group and non ECMO group. They were intravenously injected with daptomycin 500 mg qd. After the drug reached the stability statement, venous blood was collected at different time points before and after the infusion. The plasma drug concentration was measured and the pharmacokinetic parameters were calculated. The probability target acquisition (PTA) and the cumulative fraction response (CFR) were calculated by Monte Carlo simulation. RESULTS: After dosing, the main pharmacokinetic parameters in ECMO and non-ECMO group were calculated and listed as follows: C