Liver fibrosis is an important pathological stage for the progression of chronic liver diseases to liver cirrhosis.Timely and accurate assessment of fibrosis degree plays an important role in guiding the treatment of chronic liver diseases.With the development of molecular biology techniques and wide application of molecular diagnostic techniques,the measurement of novel serum molecular diagnostic markers may contribute to the early diagnosis and precise treatment of liver fibrosis.A number of novel serum molecular markers with a diagnostic value have been identified,including fibroblast factor,matrix metalloproteinases and their inhibitors,extracellular matrix-related markers,and non-coding RNAs.In addition,genomics,proteomics,and metabolomics also have certain diagnostic values.

Objective:To observe the feasibility of promoting blood circulation by removing blood stasis in target interfering ADUB endometrial hyperplasia.Methods:Endometrial hyperplasia model was established,and the rats were divided into normal group(group A),model group(group B),small,middle and large dosage groups of Chinese drugs(C group,D group,E group,respectively).To observe uterus humid weight,uterus index,morphological change of endometria and expression of VEGF before and after treatment.In addition,30 cases of Anovulatory dysfunctional uterine bleeding were selected and given intrauterine injection of Qumozhibeng Cream twice in the first week after menstrual period,the change of menstrual blood amount were observed after applying medicine for one month,three months and six months.Results:After treatment,the uterus humid weight and uterus index decreased(P

The human GM CSF cDNAandEGFP cDNA were linked together with IRES and then inserted into the expression vector pCI Egr 1, which was constructed by substituting CMV promoter in pCIneo with the Egr 1 promoter(Egr EG).The vector was transfered into human bone marrow stromal cell line HFCL by Lipofectin TM . The results indicated that the activity of EGFP in transfected cells increased at 18h after exposure to 2.5 Gy. The amounts of secreted GM CSF and CFU GM in serum free supernatants of Egr EG was significantly higher than the control group. EGFP and GM CSF cDNA were successfully integrated and expressed in the cells, which were confirmed by FACS and RT PCR analysis respectively. These in vitro data provide an experimental basis for the in vivo use of gene therapy of GM CSF gene regulated by Egr 1 promoter to protect hematopoiesis from total body irradiation.

In order to investigate the feasibility of granulocyte-macrophage colony stimulating factor (GM-CSF) gene therapy, murine GM-CSF cDNA recombinant retrovirus pLXSN/GM was transfered into retrovirus-packaging cell line PA3 17 by electroporation, and the transfected cells were used to infect hematopoietic progenitor cells rich populations. Transfective efficiency of NeoR gene was detected by G418 resistant CFU-GM test, and the results showed 36% them. In the genome of the infected target cells, integrated NeoR gene and GM-CSF cDNA were identified successfully by PCR and Southern Blot analysis respectively. The recombinant plasmids were showed to be capable of expressing GM-CSF mRNA in hematopoietic cells by in situ hybridization. In Dexter culture system, the present of GM-CSF-producing transduced cells inscreased mature nonadherent cell numbers as compared to controls. These results demonstrated that recombinant plasmids were successfully transfected into hematopoietic progenitor cells, and expressed in the cells. Therefore, it provided a basis for further investigation of gene therapy.

Objective To compare the short-term and long-term efficacy of chemotherapy with biotherapy and same chemotherapy followed by biotherapy on malignant melanoma in stage Ⅲ and Ⅳ.Methods 82 cases with malignant melanoma were treated with chemotherapy(dacarbazing,cis-platin and carmustine)or biotherapy(interleukin-2,interferon ? and dendritic cell vaccine)or biochemotherapy(chemotherapy plus biotherapy).Among them,32 cases were received biochemotherapy,26 for biotherapy and 24 for chemotherapy.Therapentic response was assessed every 3 cycles.The median time of follow up was 2 years(1-4 years).Results Response rate was 71.9% for biochemotherapy,46.2% for biotherapy and 54.2% for chemotherapy(P

Objective To explore the chemotherapeutic agents-induced modulating effects of Egr-1 promoter sequence on GM-CSF expression and its protective effect against injury to haematopoiesis due to chemotherapy.Methods Human GM-CSF cDNA and enhanced green fluorescent protein(EGFP) cDNA were linked to internal ribosome entry site(IRES) respectively,and then recombined to pCIneo vector containing Egr-1 promoter(Egr-EG).The vector was transferred into human bone marrow stromal cell line HFCL by lipofection,and the HFCL/EG cells were then finally constructed.MTT assay was performed to determine the effects of cisplatin(DDP),5-fluorouracil(5-FU),gemcitabine(GEM) and paclitaxel(PTX) on the survival rates of HFCL/EG and HFCL cells,and the IC50 of such agents against HFCL/EG and HFCL cells were calculated.The percentage of HFCL/EG cells which positively expressed EGFP was assessed by both flow cytometry and inverted fluorescence microscope.The effects of the active oxygen inhibitor N-acetylcysteine(NAC) on the expression of GM-CSF,which was modulated by promotor Egr-1,were detected by ELISA.The effects of HFCL/EG supernatant on CFU-GM after being exposed to chemotherapeutic agents were examined.Results With different sensitivity to DDP,5-FU,GEM and PTX,HFCL/EG cells were successfully constructed.The drugs showed higher IC50 value against HFCL/EG cells than HFCL cells(P

Abstract: Objective　To investigate the infection of Anisakis in marine fish sold in Fuxin, and conduct molecular identification and evolutionary tracing of third-stage larvae to determine Anisakis species. Methods　From 2018 to 2021, marine fish sold in the market were collected randomly, and the third stage larvae of Anisakis were detected in marine fish sold in the market by direct dissection, and the morphological characteristics were used to preliminarily identify species by microscopy; the total DNA was extracted, the internal transcribed spacer sequence of the ribosomal DNA of Anisakis was amplified, and the sequence alignment and evolution analysis were carried out. Results　A total of 289 market-sold sea fish samples of marine fish sold in the market were dissected and 84 samples of Anisakis were detected with a detection rate of 29.1%, of which the infection rates of hairtail and small yellow croaker were higher, at 41.4% and 41.2%, respectively. BLAST comparison of 28 sequences revealed eight species of anisakids, including Anisakis pegreffii, Anisakis simplex, Anisakis typical, Raphidascaris trichiurid, Contracaecum muraenesoxi, Hysterothylcaium zhoushanensis, Hysterothylacium amoyense and Hysterothylcaium fabri,belonging to the genera Anisakis and Hysterothylacium. The phylogenetic tree constructed from 28 sequences generally formed two topological branches, with Anisakis pegreffii, Anisakis simplex, and Anisakis typical forming three separate clusters as the topology branch of Anisakis genus. However, meanwhile, Hysterothylacium, Contracaecum, and Raphidascaris formed a separate topological branch. Conclusions　The marine fish sold in Fuxin City have severe anisakid infection, with a wide variety of anisakid species, the dominant species being Anisakis pegreffii.

Background Endophthalmitis is a serious infectious eye disease.Efficient drug therapy plays a key role in the early stage.There have been few researches on teicoplanin treating endophthalmitis and pharmacokinetics in ocular tissue.Objective The present study was to investigate the intraocular pharmacokinetic course and feature of intravitreal administration of teicoplanin.Methods Thirty-three Japanese white rabbits were included in this study and randomized into 6 groups.The right eyes of the rabbits were used in experiment.5 g/L of teicoplanin was injected into the vitreous cavity,and vitreous and aqueous humor samples were extracted after 15 minutes,30 minutes,1,2,4,6,12,24,48,96 and 192 hours,and the concentration of teicoplanin was determined by bioassay.Results The logarithmic value of the concentration of teicoplanin was raised with the increase in the bacterial inhibition zone diameters,of which the equation of the regression curve was Y =0.174X-0.813(R2=0.999).A good linear relationship was presented within 1.0-80.0 mg/L.Single intravitreal injection of teicoplanin was compliant with the two-compartment model.Moreover,the distribution phase Tα1/2 and elimination phase Tβ1/2 of vitreous were 1.68 and 152.15 hours,separately.And Tα1/2 and Tβ1/2 of the aqueous humor were 2.83 hours and 70.56 hours,individually.The peak teicoplanin concentrations in the vitreous and aqueous humor were(358.47±21.53)mg/L and(102.17±9.54)mg/L at 1 hour,respectively and remained at(4.38±0.68)mg/L and(2.38±0.38)mg/L,respectively 192 hours later.Conclusions Intravitreal injection of 0.5 mg of teicoplanin can remain therapeutic concentration for a long time in the vitreous and aqueous humor.

Objective To evaluate the prognostic value of microsatellite instability (MSI) in stage Ⅱ colon cancer patients.Methods 120 stage Ⅱ colon cancer patients underwent radical resection in the Department of Colorectal Surgery,Beijing Cancer Hospital from 2000 to 2007.Tissue samples were collected and DNA was extracted for MSI determination using PCR following the Pentaplex panel.Clinical parameters were also combined and analyzed statistically to explore the association between MSI status and clinical parameters.Results The incidence of high frequency of microsatellite instability (MSI-H) was 20.8％ in these 120 stage Ⅱ colon cancer patients.There was a significant correlation between the status of MSI and tumor differentiation (x2 =9.69,P =0.021);However MSI status was demonstrated to be a prognostic factor for disease free survival or overall survival (all P ＞ 0.05).Nor was MSI status associated with tumor relapse or metastasis.Age and preoperative serum CEA level were identified as independent factors for DFS by Cox regression.Conclusion In stage Ⅱ colon cancer patients,MSI status correlates with tumor differentiation,but is not a prognostic factor.

Objective To evaluate the efficacy, toxicity and clinical benefit response of gemcitabine on advanced non small cell lung cancer in elderly. Methods Patients in the chemotherapy arm of the study received gemcitabine 1 250 mg/ m 2 as a intravenous infusion every 21 days .Patients in the best supportive care(BSC) arm should not receive chemotherapy or anticancer therapy. Results Overall survival period in the gemcitabine arm was significantly longer than in the BSC arm ( P