Micro-syringe as a result of the high frequency of clinical use, direct contact with patients, the failure of its equipment will have a direct impact on the patient's disease status. Researchers in this paper, by simulating the test fluid, electrical safety testing and analysis of statistical methods such as maintenance records, consider six kinds of common injection pump, in terms of performance, safety and the failure rate of three performance. Compared the performance analysis, summarized the various types of injection pump characteristics, researchers make suggestions to clinical departments, equipment procurement and equipment management departments for usage and improvement.
Equipment Failure ; Equipment Safety ; Syringes

ObjectiveTo understand the characteristics of mutations in BCR-ABL1 kinase domain mutation,these chronic myeloid leukemia (CML) and Ph positive acute lymphoblastic leukemia (ALL)patients who got imatinib treatment had poor effect.MethodsTotally 177 CML patients and 33 Ph( + )ALL patients were selected at Beijing Dao-Pei Hospital from Sep.2007 to Dec.2010.All of them were Chinese patients.Totally 243 bone marrow or peripheral blood specimens were collected from the patients,who had early effect,then resistance emergenced,or for more than 3 months of poor efficacy.Extracted total RNA from the specimens' nuclear cells,reversed transcription to cDNA.Amplified the whole span of BCRABL1 fusion kinase gene by nest PCR (from 242 to 493 amino acid coding sequence),used the type AB3130XL gene sequencing instrument determinate the gene sequence of ABL1 kinase region and then used the Variant Reporter V1.0 software to analyze the results of gene mutations.ResultsThirty-two kinds of different mutations were detected of ABL1 gene mutations,accounting for 34.2％ (83/243 cases).Among them,the T315I was 12％ (10/83),mutation rate was the highest,followed by Y253H was 11％ (9/83),G250E was 7％ (6/83),E255K was 7％ (6/83),M351T was 6％ (5/83),E459K was 5％ (4/83) ;Q252H,D276G,F317L,E355G,F359V,H396R were all 4％ (3/83).Three cases of insertion mutations were found,including 2 cases of 357-358insk,1 case of V304RfsX17.Seven patients had found existence two or more point mutations.The multiple drug resistance mutations might exist in the same leukemia clone.The same individual was not only contain common resistance mutations,but also rare point mutations,insertion mutations.The mutations might be lead to loss of kinase activity.ConclusionsUnder the imatinib drugs pressure,the ABL1 gene mutation in leukemia cells appears randomly,and results in different resistant clones.Different resistant clones can coexist in the same patients in vivo; resistant clones not only contain point mutations,but also contain inserted deletion mutations.

Objective To explore the clinical and imaging factors influencing the patients' prognosis after preoperative radiotherapy for local advanced rectal cancer.Methods We retrospectively analyzed 106 locally advanced rectal cancer patients from June 2004 to September 2015 in our institution.All patients underwent preoperative radiotherapy.According to the Mandard score,patients were divided into 5 groups (TRG1-5).All patients were divided into two groups according to the TRG,which including good responder (TRG1 + 2) and poor responder (TRG3 + 4 + 5) groups.All of the tumor ADC values of post-RT were measured by Diffusion-weighted MRI technology,and the relationship between tumor ADC values of post-RT and TRG was analyzed.Results In univariate analysis,age,chemotherapy,pT,pN,differentiation degree,vascular invasion and TRG were significantly associated with overall survival (x2 =3.945-8.110,P ＜ 0.05).Multivariate analysis indicated that differentiation degree and TRG were the independent prognostic factors for OS (x2 =5.221,6.563,P ＜ 0.05).No significant difference was found between long-course and short-course radiotherapy group (P ＞ 0.05) in OS.The good responder group had a favorable survival in 5-year OS compared to the poor responder group (x2 =8.110,P ＜ 0.05).Preoperative radiotherapy,preoperative chemotherapy,pathological type,differentiation degree and gross type,vascular tumor thrombus and tumor ADC values of post-RT were significantly associated with TRG (x2 =4.189-18.139,P ＜ 0.05).The best critical point of tumor ADC values of post-RT was 1.7 x 10-3 mm2/s by using ROC curve.The accuracy of tumor ADC values of post-RT in predicting TRG1 + 2 was 70％.Conclusions The TRG can predict the efficacy of preoperative radiotherapy in patients with locally advanced rectal cancer based on the Mandard score.There was no significant difference in OS between long-course radiotherapy group and short-course radiotherapy group.The tumor ADC values of post-RT might become a potential factor to predict TRG in patients with locally advanced rectal cancer after preoperative radiotherapy.

Objectives: To study the changes of blood levels of soluble semaphorin 4D (sSema4D) and matrix metalloproteinases-14 (MMP-14);to explore the correlation between sSema4D and ventricular remodeling in patients of dilated cardiomyopathy with chronic heart failure.
Methods: Our research included in 2 groups:Dilated cardiomyopathy group, n=86 patients and Control group, n=32 healthy subjects. Blood levels of sSema4D, MMP14, Pro-BNP and hs-CRP were examined by ELISA. Left atrial diameter (LAD), right ventricular diameter (RVD), ejection fraction (EF), left ventricular end diastolic diameter (LVEDD), left ventricular fractional shortening (LVFS) were measured by echocardiography. Correlation analysis between blood levels of sSema4D, MMP-14 and the parameters for left ventricular remodeling was conducted.
Results: Blood levels of sSema4D and MMP14 were different between 2 groups, P<0.005. In Dilated cardiomyopathy group, sSema4D level was positively related to MMP-14 and LVEDD (r=0.462, P=0.001 and r=0.643, P<0.001) respectively.
Conclusion: Serum level of sSema4D might be related to ventricular remodeling in patients with dilated cardiomyopathy which could be used as risk factor for predicting the prognosis of heart failure in relevant patients.

Micro-syringe as a result of the high frequency of clinical use, direct contact with patients, the failure of its equipment will have a direct impact on the patient's disease status. Researchers in this paper, by simulating the test fluid, electrical safety testing and analysis of statistical methods such as maintenance records, consider six kinds of common injection pump, in terms of performance, safety and the failure rate of three performance. Compared the performance analysis, summarized the various types of injection pump characteristics, researchers make suggestions to clinical departments, equipment procurement and equipment management departments for usage and improvement.

OBJECTIVETo investigate the effects of total flavonoids of Chrysanthemum indicum (TFC) on metabolism of free radical and immunoregulatory effects in adjuvant arthritis (AA) rats.

METHODAA rats were induced by Freunds complete adjuvant. Secondary paw swelling of AA rats was measured with volume meter to observe the antirheumatic effect of TFC. The levels of SOD, MDA and NO in serum and supernatant of peritoneal macrophage were measured by commercial assay kits. ConA-induced splenocyte proliferation and IL-2 level produced by splenocyte were detected by MTT method.

RESULTTFC could decrease the levels of MDA and NO, as well as increase the activity of SOD in serum and supernatant of peritoneal macrophage compared with AA model group. Meanwhile, the suppressed lymphocyte proliferation and IL-2 production of splenic lymphocytes in AA rats were reversed by treatment with TFC.

CONCLUSIONTFC showed significant therapeutical effect on adjuvant arthritis and its mechanism was at least in part related to the antioxidant and immunoregulatory effects.

Animals ; Antioxidants ; metabolism ; Arthritis, Experimental ; drug therapy ; immunology ; metabolism ; Cells, Cultured ; Chrysanthemum ; chemistry ; Flavonoids ; chemistry ; therapeutic use ; Free Radicals ; metabolism ; Interleukin-2 ; metabolism ; Lymphocyte Activation ; drug effects ; Male ; Malondialdehyde ; metabolism ; Mice ; Mice, Inbred C57BL ; Nitric Oxide ; metabolism ; Rats ; Rats, Sprague-Dawley ; Spleen ; cytology ; Superoxide Dismutase ; metabolism

OBJECTIVETo compare the efficacy between laparoscopic and open surgery in the treatment of gastric gastrointestinal stromal tumor (gastric GIST), and to explore the feasibility and safety of laparoscopic resection for gastric GIST.

METHODSClinical data of 226 gastric GIST patients confirmed by pathology with maximal tumor diameter less than 10 cm undergoing operation in our department from January 2002 to December 2013 were retrospectively analyzed. Among them, 158 patients received laparoscopic surgery(laparoscopic group), and 68 open surgery (open group). Related indicators of clinical efficacy were compared between the two groups. Laparoscopic group patients were further divided into 4 groups according to chronological order, including 39 patients in group A, 39 in group B, 39 in group C and 41 in group D. Operating time was compared among 4 groups.

RESULTSCompared with the open group, laparoscopic group had shorter operation time [(138.8±69.2) min vs. (173.3±74.5) min, P=0.001], less intraoperative bleeding [30 ml vs. 125 ml, P=0.000], faster recovery to postoperative first flatus [(3.2±1.1) d vs. (3.8±1.1) d, P=0.000] and resumption of oral intake [(3.9±1.5) d vs. (4.7±1.5) d, P=0.000], and a shorter hospital stay [(8.1±2.3) d vs. (10.0±2.6) d, P=0.001]. The operation time of laparoscopic group A, B, C and D was (181.0±81.2) min, (124.7±57.8) min, (126.9±67.9) min and (123.4±51.8) min respectively, and the difference was statistically significant(F=7.188, P=0.001). Median follow-up time of 226 patients was 32 months(5 to 104 months). In laparoscopic group, 136 cases(86.1%) received follow-up, and the 1-, 3-, and 5-year overall survival were 98.7%, 90.7% and 72.8% respectively. In the open group, 59 cases (86.8%) received follow-up, and the 1-, 3-, and 5-year overall survival were 98.3%, 87.1% and 83.1%, respectively. The survival between two groups were not significantly different(P=0.164).

CONCLUSIONSLaparoscopic surgery removing gastric GIST with a maximal diameter of less than 10 cm is safe and feasible. The learning curve of laparoscopic gastric GIST surgery is about 40 cases.

Gastrectomy ; Gastrointestinal Neoplasms ; Gastrointestinal Stromal Tumors ; Humans ; Laparoscopy ; Length of Stay ; Operative Time ; Postoperative Period ; Retrospective Studies ; Safety

Objective:To investigate the relationship between serum matrix metalloproteinase-9 (MMP-9) level and the location and severity of bleeding in patients with cerebral microbleeds(CMBs).Methods:A total of 60 CMBs patients admitted to the Department of Neurology of the First Affiliated Hospital of the Xinxiang Medical University from January 2019 to August 2020 were selected as subjects as the CMBs group, and 60 healthy controls without nervous system diseases in outpatient physical examination during the same period were selected as the control group. The clinical data and biochemical indicators of the two groups were collected. Serum MMP-9 levels were measured by enzyme linked immunosorbent assay (ELISA). According to susceptibility weighted imaging (SWI), CMBs patients were divided into grade 1 group ( n=24), grade 2 group ( n=19) and grade 3 group ( n=17), and according to the micro analytical rating scale (MARS), the CMBs patients were divided into the lobar group ( n=19), the deep or infratentorial group ( n=17) and the mixed group ( n=24).The relationship between serum MMP-9 level and the location and severity of CMBs was analyzed. SPSS 19.0 software was used for data statistical analysis.One-way ANOVA, t-test and rank sum test were used for comparison. Logistic regression analysis was used to analyze the influencing factors. Pearson correlation analysis and Spearman correlation analysis were used for correlation analysis. Results:The level of MMP-9 in CMBs group was significantly higher than that in control group (208.13(142.25, 285.88) μg/L, 149.50(93.40, 186.51)μg/L), and the difference was statistically significant ( P<0.05). Serum MMP-9 level was a risk factor of CMBs ( β=1.322, OR=3.750, 95% CI=2.038-7.997, P=0.002). The difference of level of MMP-9 in different severity of CMBs was statistically significant (147.55(109.25, 266.47)μg/L, 242.12(147.55, 288.80)μg/L, 270.42(203.43, 364.27)μg/L, P=0.017). Serum MMP-9 level was positively correlated with the number of CMBs ( r=0.371, P=0.003). The difference of MMP-9 level of CMBs in different locations were statistically significant (249.77(158.43, 338.46)μg/L, 188.83(138.52, 243.15)μg/L, 210.65(144.25, 255.78)μg/L, P=0.013). The increased serum MMP-9 level was a risk factor for CMBs( β=0.401, OR=1.122, 95% CI=1.004-1.204, P=0.036). Conclusion:The increased level of serum MMP-9 may be a risk factor of CMBs, especially for CMBs in cerebral lobesand, and the level of MMP-9 is positively correlated with the severity of CMBs.

Objective To compare the efficacy between laparoscopic and open surgery in the treatment of gastric gastrointestinal stromal tumor (gastric GIST), and to explore the feasibility and safety of laparoscopic resection for gastric GIST. Methods Clinical data of 226 gastric GIST patients confirmed by pathology with maximal tumor diameter less than 10 cm undergoing operation in our department from January 2002 to December 2013 were retrospectively analyzed. Among them , 158 patients received laparoscopic surgery (laparoscopic group), and 68 open surgery (open group). Related indicators of clinical efficacy were compared between the two groups. Laparoscopic group patients were further divided into 4 groups according to chronological order , including 39 patients in group A, 39 in group B, 39 in group C and 41 in group D. Operating time was compared among 4 groups. Results Compared with the open group, laparoscopic group had shorter operation time [(138.8±69.2) min vs. (173.3±74.5) min, P=0.001], less intraoperative bleeding [30 ml vs. 125 ml, P=0.000], faster recovery to postoperative first flatus [(3.2±1.1) d vs. (3.8±1.1) d, P=0.000] and
resumption of oral intake [(3.9±1.5) d vs. (4.7±1.5) d, P=0.000], and a shorter hospital stay[(8.1± 2.3) d vs. (10.0±2.6) d, P=0.001]. The operation time of laparoscopic group A, B, C and D was (181.0±81.2) min, (124.7±57.8) min, (126.9±67.9) min and (123.4±51.8) min respectively, and the difference was statistically significant (F=7.188, P=0.001). Median follow-up time of 226 patients was 32 months (5 to 104 months). In laparoscopic group, 136 cases (86.1%) received follow-up, and the 1-, 3-, and 5-year overall survival were 98.7%, 90.7% and 72.8% respectively. In the open group, 59 cases (86.8%) received follow-up, and the 1-, 3-, and 5-year overall survival were 98.3%, 87.1% and 83.1%, respectively. The survival between two groups were not significantly different (P=0.164). Conclusions Laparoscopic surgery removing gastric GIST with a maximal diameter of less than 10 cm is safe and feasible. The learning curve of laparoscopic gastric GIST surgery is about 40 cases.