1.Mechanisms of salicylates for ulcerative colitis
Chinese Pharmacological Bulletin 1998;0(S1):-
SASP, 5-ASA, 4ASA are effectivedrugs for ulcerative colitis. They contain the same structure, but their action modes are different. The precise mechanism of salicylates are unclear. SASP,5-ASA inhibit inflammatory mediators, but 4ASA has no effect on PG or LT. 5-ASA has a strong force to scavenge the reactive oxygen metabolites. 4-ASA is weak in this aspect. The salicylates influence the function of several cy-tokines at different degree, such as IL-1, IL-6, IL-2, INF-a, TNF-r, GM-CSF, etc, probably bypreventing the binding of cytokine and receptor, or decreasing some cytokine synthesis and liberation. SASP inhibits neutrophilial cell degrandulation, releases lysosome and other enzymes, and changes the activity of lymphacyte. The salicylates also effect nitric oxide synthesis,adhesion molecules and the intestine permeability.
2.Contamination and homology of carbapenem-resistant Acinetobacter baumannii from hospital environmental object surface
Chinese Journal of Infection Control 2015;(6):366-369
Objective To investigate the contamination of carbapenem-resistant Acinetobacter baumannii (CRAB) from object surface of key departments in a hospital,and identify whether these CRAB were homologous. Methods Environmental hygienic monitoring in intensive care unit (ICU),emergency intensive care unit(EICU), hemodialysis room and operating room was conducted.Acinetobacter baumannii (A.baumannii)isolated from ICU and EICU environmental specimens were amplified and typed by enterobacterial repetitive intergenic consensus-poly-merase chain reaction (ERIC-PCR).Results Except hand hygiene of health care workers in EICU was qualified, bacterial count of object surface of ICU and EICU were all unqualified;detection results of specimens from hemodi-alysis room and operating room were all qualified.A total of 53 specimens were taken from object surface of ICU and EICU,7 (13.21 %)A.baumannii isolates were isolated,and all were CRAB isolates,6 of which were of the same genotype and were identical with A.baumannii from patients’sputum.Conclusion CRAB isolated from object surface in key departments is homologous,cleaning and disinfection of environmental object surface should be inten-sified to reduce the occurrence of healthcare-associated infection.
3. One-two punch model for the precision treatment of liver cancer
Journal of Shanghai Jiaotong University(Medical Science) 2019;39(11):1223-1225
Liver cancer remains difficult to treat, owing to a paucity of drugs that target critical dependencies; broad-spectrum kinase inhibitors such as sorafenib provide only a modest benefit to patients with hepatocellular carcinoma. The induction of senescence may represent a strategy for the treatment of cancer, especially when combined with a second drug that selectively eliminates senescent cancer cells (senolysis). Here, using a kinome-focused genetic screen, we show that pharmacological inhibition of the DNA-replication kinase CDC7 induces senescence selectively in liver cancer cells with mutations in TP53. A follow-up chemical screen identified the antidepressant sertraline as an agent that kills hepatocellular carcinoma cells that have been rendered senescent by inhibition of CDC7. Sertraline suppressed mTOR signalling, and selective drugs that target this pathway were highly effective in causing the apoptotic cell death of hepatocellular carcinoma cells treated with a CDC7 inhibitor. The feedback reactivation of mTOR signalling after its inhibition is blocked in cells that have been treated with a CDC7 inhibitor, which leads to the sustained inhibition of mTOR and cell death. Using multiple in vivo mouse models of liver cancer, we show that treatment with combined inhibition of CDC7 and mTOR results in a marked reduction of tumour growth. Our data indicate that exploiting an induced vulnerability could be an effective treatment for liver cancer.
4.The level of plasma prekallikrein and its correlation with latent autoimmune diabetes in adults
Wen QIN ; Baoyu QIN ; Ning XIA
Chongqing Medicine 2015;(3):321-323
Objective To investigate the plasma expression of plasma prekallikrein(KLKB1)in latent autoimmune diabetes in a‐dults(LADA),type1diabetes(T1DM),type2diabetes(T2DM)andhealthypeople,anditsrelationshipwithLADAincombination with other indicators .Methods Among the four groups ,KLKB1 ,glycosylated hemoglobin(HbA1c) ,fasting blood glucose(FPG) ,2 h postprandial plasma glucose(2 h PG) ,Fasting c‐peptide(FCP) ,2 h postprandial C peptide(2 h CP) ,and glutamic acid decarboxy‐lase antibody(GADA)were detected respectively .And the detection results were analyzed by statistics .Results By comparison , there were statistically significant difference between LADA group and other groups on FPG(except for T2DM group) ,2 h PG , HbA1c ,FCP and 2 h CP(P< 0 .05) .And except for T1DM group ,there was statistically significant difference between LADA group and other groups on GADA ,too(P<0 .05) .The plasma expression of KLKB1 in LADA was significantly higher than those in T2DM group and NC group(P<0 .05) .The levels of KLKB1 was related with FCP、HbA1c、FPG、2 h PG(P<0 .05) ,and it was not related with age ,course ,and 2 h CP(P>0 .05) .Receiver operating characteristic (ROC) showed that only using KLKB1 to di‐agnose LADA had its limitation .Conclusion KLKB1 could be used as a clinical indicator to predict the onset of LADA to a certain degree .We could screen for LADA by using KLKB1 and other indicators in people at high risk .
7.Research progress of the association between PAX6 gene and retinal diseases
International Eye Science 2014;(9):1606-1607
PAX6 gene plays an important role in embryological development, and the mutation of this gene may result incongenital aniridia, retinoblastoma, macula hypoplasia, Peters' anomaly and so on. A brief introduction of the background PAX6 gene, and the association between PAX6 and retinal diseases were summarized in this review.
8.Treatment for traumatic optic neuropathy with mouse nerve growth factor:a meta-analysis
International Eye Science 2015;(4):633-635
AIM:To evaluate the efficacy of treating traumatic optic neuropathy( TON) with mouse nerve growth factor.
METHODS: We searched the Cochrane Library, Pubmed, Medline, CNKI, Wanfang database and VIP to collect randomized controlled trials ( RCTs ) of using mouse nerve growth factor for TON. The quality of the included trials was assessed and poor-qualified trials were eliminated before the meta - analysis was conducted.
RESULTS:Seven RCTs with a total of 399 eyes included were retrieved, and OR=3. 78 with a 95%CI of [ 2. 35, 6.06], the difference was significant (P<0. 01).
CONCLUSION:The existing evidence supports that the prognosis of TON is better when mouse nerve growth factor are adopted in treatment, but there is still a need for well-planned, large-scale and multicenter RCTs to verify it.
9.Progress of targeted therapy related to K-ras mutation.
Chinese Journal of Pathology 2012;41(1):59-61
Antineoplastic Agents
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therapeutic use
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Colorectal Neoplasms
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drug therapy
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genetics
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metabolism
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Genes, ras
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genetics
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Humans
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Lung Neoplasms
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drug therapy
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genetics
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metabolism
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Molecular Targeted Therapy
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methods
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Mutation
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Neoplasms
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drug therapy
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genetics
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metabolism
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Pancreatic Neoplasms
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drug therapy
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genetics
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metabolism
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Proto-Oncogene Proteins
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genetics
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metabolism
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Proto-Oncogene Proteins p21(ras)
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Receptor, Epidermal Growth Factor
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drug effects
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metabolism
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Signal Transduction
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ras Proteins
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genetics
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metabolism
10.Expressions of miR-17 and miR-20a in CD4+ T cells from patients with systemic lupus erythematosus and their correlations with disease activity
Yunshi WEN ; Haihong QIN ; Jinhua XU
Chinese Journal of Dermatology 2014;47(3):172-175
Objective To investigate the expressions of miR-17 and miR-20a in CD4+ T cells from patients with systemic lupus erythematosus (SLE) and their correlations with disease activity.Methods CD4+ T cells were isolated from the venous blood of 30 patients with SLE and 18 healthy human controls.RNA was extracted from the CD4+T cells,and real-time fluorescence-based quantitative PCR (qPCR) was performed to determine the expression levels of miR-17 and miR-20a.The intergroup comparison of miR-17 and miR-20a expression levels was done using t test and Mann-Whitney test,and the correlations of miR-17 and miR-20a expressions with clinical parameters were assessed using Pearson or Spearman correlation coefficients.Results The patients with SLE showed increased expression levels (2-△c~) of miR-17 and miR-20a compared with the healthy controls (0.24 ± 0.08 vs.0.15 ± 0.06 for miR-17,0.19 ± 0.10 vs.0.12 ± 0.09 for miR-20a,both P < 0.05).The miR-17 and miR-20a expression levels were also significantly higher in patients with active SLE than in those with inactive SLE and the healthy controls (0.27 ± 0.07 vs.0.20 ± 0.05 and 0.16 ± 0.08 for miR-17,0.22 ± 0.10 vs.0.15-0.07 and 0.13 ± 0.09 for miR-20a,all P < 0.05),but similar between the patients with inactive SLE and healthy controls (both P > 0.05).The expression levels of both miR-17 and miR-20a were positively correlated with SLE disease activity index (SLEDAI)(r =0.45,0.38,respectively,both P < 0.05) and anti-dsDNA antibody level (r =0.54,0.46,respectively,both P <0.05),but negatively correlated with serum C3 levels (r =-0.43,-0.42,respectively,both P < 0.05).Condusions The expressions of miR-17 and miR-20a are increased in CD4+ T cells from patients with SLE,and correlated with the disease activity in SLE.