In this study, a xylanase-produeing Aspergillus niger strain, NS-1, was screened and isolated from agricultural and forestry wastes. Based on single-fac- tor experiments, the effects of different carbon sources, compo...In this study, a xylanase-produeing Aspergillus niger strain, NS-1, was screened and isolated from agricultural and forestry wastes. Based on single-fac- tor experiments, the effects of different carbon sources, composite carbon sources, nitrogen sources, calcium carbonate concentrations, initial pH and surfactants on xylanase production by A. niger NS-1 were investigated. The results indicated that the most appropriate carbon source was corncobs ; the best composite carbon source was corncobs ＋ xylan, which was conducive to xylanase secretion; the most suitable nitrogen source was ammonium sulfate. Xylanase activity reached the highest in the medium added with 1.5% calcium carbonate and SDS as a surfactant with an initial pH of 5.0. This study provided the basis for the production of high-activity xylanase.展开更多
Objective: To investigate the effects of laparoscopic minimally invasive surgery on coagulation, antioxidant function, angiogenesis, IGF-1 and IFN-γ levels in rectal cancer patients. Methods: A total of 90 patients w...Objective: To investigate the effects of laparoscopic minimally invasive surgery on coagulation, antioxidant function, angiogenesis, IGF-1 and IFN-γ levels in rectal cancer patients. Methods: A total of 90 patients with rectal cancer admitted to general surgery in our hospital from March 2016 to December 2017 were randomly divided into control group (n=45) and observation group (n=45), the control group underwent conventional open surgery and the observation group underwent laparoscopic radical resection. The blood coagulation function, antioxidant capacity, angiogenesis, IGF-1 and IFN-γ levels were compared between the two groups. Results: Before treatment, there was no significant difference in coagulation function, antioxidant capacity, angiogenesis, IGF-1 and IFN-γ levels between the two groups. After treatment, there was no significant difference in PT and APTT between the two groups, while FIB and DD were significantly increased compared with before treatment, and the FIB and DD of the observation group increased significantly compared with the control group;the SOD and GSH of the two groups were significantly lower than those before treatment, while the MDA was significantly increased compared with that before treatment, the decrease of SOD, GSH and the increase of MDA in the observation group was significantly greater than that of the control group;the levels of VEGF and MMP-9 in the two groups were significantly lower than those before treatment, and the VEGF and MMP-9 in the observation group were significantly lower than those in the control group;the levels of IGF-1 in the two groups were significantly lower than those before treatment, and the IGF-1 in the observation group was significantly lower than that in the control group;the IFN-γ levels in the two groups were significantly higher than those before treatment, and the IFN-γ was significantly increased in the observation group compared with the control group. Conclusions: Laparoscopic surgery for patients with rectal cancer can easily cause hypercoagulable state of the patient's blood, but it can effectively avoid tumor metastasis and less stress damage, and further promote the rehabilitation of the patients, which is worthy of clinical promotion.展开更多
Objective: To explore the effect of thymalfasin on coagulation index, immune function, PCT and sTREM-1 levels in patients with community acquired pneumonia. Methods: 160 patients with community acquired pneumonia admi...Objective: To explore the effect of thymalfasin on coagulation index, immune function, PCT and sTREM-1 levels in patients with community acquired pneumonia. Methods: 160 patients with community acquired pneumonia admitted in our hospital from June 2016-June 2017 were divided into the control group and the observation group according to the random number table method, each 80 cases. The control group was given conventional treatment, while the observation group was given thymalfasin on the basis of conventional treatment. The levels of D-D, FBG, complement C3, C4, T lymphocyte subsets, PCT and sTREM-1 were detected before and after treatment. Results: Before treatment, there was no statistical difference between the serum levels of D-D, FBG, C3, C4, CD3+,CD4+,CD8+,CD4+/CD8+, PCT and sTREM-1 in the two groups of patients, and P>0.05. After treatment, the levels of CD3+, CD4+and CD4+/CD8+ in the control group and the observation group were significantly increased, and the levels of D-D, FBG, CD8+, PCT and sTREM-1 were significantly decreased, and the level of CD3+, CD4+ and CD4+/CD8+ in the observation group was significantly higher than that of the control group after treatment, and the D-D, FBG, CD8+, PCT and sTREM-1 levels were significantly lower than those in the control group, the difference was statistically significant, P<0.05. Conclusion: Thymalfasin has a certain clinical effect in the treatment of patients with community acquired pneumonia. It can significantly improve the blood coagulation function, enhance the immune ability and alleviate the inflammatory state.展开更多
基金Supported by Project of Taizhou Science and Technology Bureau(TS019)
文摘In this study, a xylanase-produeing Aspergillus niger strain, NS-1, was screened and isolated from agricultural and forestry wastes. Based on single-fac- tor experiments, the effects of different carbon sources, composite carbon sources, nitrogen sources, calcium carbonate concentrations, initial pH and surfactants on xylanase production by A. niger NS-1 were investigated. The results indicated that the most appropriate carbon source was corncobs ; the best composite carbon source was corncobs ＋ xylan, which was conducive to xylanase secretion; the most suitable nitrogen source was ammonium sulfate. Xylanase activity reached the highest in the medium added with 1.5% calcium carbonate and SDS as a surfactant with an initial pH of 5.0. This study provided the basis for the production of high-activity xylanase.
文摘Objective: To investigate the effects of laparoscopic minimally invasive surgery on coagulation, antioxidant function, angiogenesis, IGF-1 and IFN-γ levels in rectal cancer patients. Methods: A total of 90 patients with rectal cancer admitted to general surgery in our hospital from March 2016 to December 2017 were randomly divided into control group (n=45) and observation group (n=45), the control group underwent conventional open surgery and the observation group underwent laparoscopic radical resection. The blood coagulation function, antioxidant capacity, angiogenesis, IGF-1 and IFN-γ levels were compared between the two groups. Results: Before treatment, there was no significant difference in coagulation function, antioxidant capacity, angiogenesis, IGF-1 and IFN-γ levels between the two groups. After treatment, there was no significant difference in PT and APTT between the two groups, while FIB and DD were significantly increased compared with before treatment, and the FIB and DD of the observation group increased significantly compared with the control group;the SOD and GSH of the two groups were significantly lower than those before treatment, while the MDA was significantly increased compared with that before treatment, the decrease of SOD, GSH and the increase of MDA in the observation group was significantly greater than that of the control group;the levels of VEGF and MMP-9 in the two groups were significantly lower than those before treatment, and the VEGF and MMP-9 in the observation group were significantly lower than those in the control group;the levels of IGF-1 in the two groups were significantly lower than those before treatment, and the IGF-1 in the observation group was significantly lower than that in the control group;the IFN-γ levels in the two groups were significantly higher than those before treatment, and the IFN-γ was significantly increased in the observation group compared with the control group. Conclusions: Laparoscopic surgery for patients with rectal cancer can easily cause hypercoagulable state of the patient's blood, but it can effectively avoid tumor metastasis and less stress damage, and further promote the rehabilitation of the patients, which is worthy of clinical promotion.
文摘Objective: To explore the effect of thymalfasin on coagulation index, immune function, PCT and sTREM-1 levels in patients with community acquired pneumonia. Methods: 160 patients with community acquired pneumonia admitted in our hospital from June 2016-June 2017 were divided into the control group and the observation group according to the random number table method, each 80 cases. The control group was given conventional treatment, while the observation group was given thymalfasin on the basis of conventional treatment. The levels of D-D, FBG, complement C3, C4, T lymphocyte subsets, PCT and sTREM-1 were detected before and after treatment. Results: Before treatment, there was no statistical difference between the serum levels of D-D, FBG, C3, C4, CD3+,CD4+,CD8+,CD4+/CD8+, PCT and sTREM-1 in the two groups of patients, and P>0.05. After treatment, the levels of CD3+, CD4+and CD4+/CD8+ in the control group and the observation group were significantly increased, and the levels of D-D, FBG, CD8+, PCT and sTREM-1 were significantly decreased, and the level of CD3+, CD4+ and CD4+/CD8+ in the observation group was significantly higher than that of the control group after treatment, and the D-D, FBG, CD8+, PCT and sTREM-1 levels were significantly lower than those in the control group, the difference was statistically significant, P<0.05. Conclusion: Thymalfasin has a certain clinical effect in the treatment of patients with community acquired pneumonia. It can significantly improve the blood coagulation function, enhance the immune ability and alleviate the inflammatory state.
文摘目的探究凝血指标联合血清单核细胞趋化蛋白-1(monocyte chemotactic protein-1,MCP-1)对慢性肾脏病患者急性肾损伤的预测价值。方法选择2021年1月─2023年6月于联勤保障部队第九〇八医院收治的慢性肾脏病患者155例为研究对象,比较急性肾损伤组(40例)及急性肾损伤未发生组(115例)患者的临床基本资料、凝血指标、MCP-1水平。探究影响慢性肾脏病患者急性肾损伤发生的主要风险因素及凝血指标、MCP-1预测慢性肾脏病患者急性肾损伤的临床价值。结果急性肾损伤组患者的凝血酶时间(TT)、活化部分凝血酶时间(APTT)、凝血酶原时间(PT)、MCP-1水平较未发生组升高(t=20.506、20.551、21.120、16.230;均P<0.001);急性肾损伤组患者纤维蛋白原(FIB)水平较未发生组降低(t=8.441;P<0.001)。慢性肾脏病患者急性肾损伤与年龄、性别、体质量指数(body mass index,BMI)、糖尿病无关(t=0.521、0.760、0.648、2.399;P=0.477、0.383、0.341、0.121),与舒张压、收缩压、血尿酸、空腹血糖、总胆固醇(TC)、血肌酐(Scr)、三酰甘油(TAG)、高脂血症、高血压有关(t=15.681、12.942、11.694、6.914、12.836、8.392、9.724、14.856、11.372;均P<0.001)。以慢性肾脏病患者发生急性肾损伤为因变量,临床资料中P<0.05的变量为自变量行多因素Logistic回归分析,结果显示收缩压、舒张压、空腹血糖、血尿酸、TC、TAG、Scr、高血压、高脂血症、PT、TT、FIB、APTT、MCP-1为慢性肾脏病患者急性肾损伤发生的主要危险因素(OR值分别为:3490、3.357、3.050、2.980、3.264、2.861、3.287、2.939、3.466、9.196、3.350、3.281、2.974、3.404;95%CI分别为:2.210~4.770、1.947~4.767、1.862~4.238、1.838~4.122、2.104~4.424、1.751~3.971、2.065~4.510、1.813~4.065、2.416~4.516、1.982~4.410、2.082~4.618、2.103~4.459、1.780~4.168、2.092~4.716;P值分别为:0.002、0.004、0.005、0.002、<0.001、<0.001、<0.001、0.007、0.002、<0.001、<0.001、<0.001、<0.001、<0.001)。结论TT、APTT、PT、FIB、MCP-1水平与患者急性肾损伤发生有关,对慢性肾脏病患者急性肾损伤有较好的预测价值。
