1.Research in the portal vein tumor thrombosis for hepatocellular carcinoma
Journal of International Oncology 2012;39(2):140-142
Portal vein tumor thrombus (PVTT) influence the prognosis of hepatocellular carcinoma.The development of PVTT is a multi-factor,multi-part process.According to anatomic features of the portal vein in the liver and tumor thrombus of HCC developing modes,a uniform tumor thrombus types system (typesⅠ -Ⅳ) is recommended.Multi-modal therapy based on surgery,interventional therapy and radiotherapy can improve the curative effect enormously.
2.Visual electrophysiological abnormality in patients with pregnancy-induced hypertension syndrome
Recent Advances in Ophthalmology 2000;20(5):328-330
Objective To study the visual electrophyological changes in patients with pregnancy-induced hypertension syndrome(PIH).Methods The visual evoked potentials (VEP) and electroretinogram (ERG) of 28 patients with PIH in 56 eyes were recorded.Results The patients with PIH had pathologic visual electrophysiologic abnormalities. The VEP N75 peak latency significantly increased(P<0.05), and the ERG b wave latency in patients with PIH showed remarkable difference(P<0.05).Conclusion Visual electrophysiological examination may be valuable in early diagnosis of retinal disfunction in patients with PIH.
4.Immune status and vaccination in children with leukemia.
Chinese Journal of Pediatrics 2011;49(11):809-813
7.Renal transplantation in highly sensitized patients
Xiaopeng YUAN ; Wei GAO ; Jie LI
Chinese Journal of Organ Transplantation 1996;0(04):-
Objective To explore the protocol of tissue matching and anti-rejection therapy in highly sensitized patients (HSP). Method The panel reactive antibody (PRA), human leukocyte antigen (HLA) matching and renal transplantation outcomes of 45 HSPs were retrospectively analyzed. Results Hyperacute rejection occurred in 2 patients. Acute rejection occurred in 9 patients and reversed by anti-rejection therapy. One year patient/graft survival rate was 95.6% / 91.1% respectively. Conclusions To avoid specific antibody through HLA matching is the key point for successful renal transplantation of HSP. Antithymocyte globulin (ATG) induction therapy combined with tacrolimus, mycophenolate mofetil therapy can decrease the rate of acute rejection and prolong graft survival.
8.Effects of interferon-? on thyroglobulin and thyroid peroxidase gene expressions in FRTL5 cells induced by thyroid stimulating antibody
Zhenfang YUAN ; Yan GAO ; Changhong LI
Chinese Journal of Endocrinology and Metabolism 1985;0(02):-
Objective To observe the effects of interferon ? (IFN?) on thyroglobulin (TG) and thyroid peroxidase (TPO) gene expressions in FRTL5 cells induced by thyroid stimulating antibody (TSAb). Methods TSAb crude fraction was extracted by polyethylene glycol 4000. Recombinant rat interferon ? (0, 1, 10, 10 2, 10 3 U/ml) was added to the FRTL5 cells induced by TSAb, and then expressions of TG, TPO mRNA were measured by Northern blot, the cell growth was measured by 〔 3H〕 thymidine incorporation. Results (1)TSAb increased TG, TPO gene expressions, and 〔 3H〕 thymidine incorporation. (2)Interferon ?inhibitedTSAb inducedTG, TPOgeneexpressionsand〔 3H〕 thymidine incorporation. Conclusion Interferon ? inhibits the growth and function of thyrocytes induced by TSAb, which suggests that interferon ? might regulate thyroid function in Graves' disease.
9.Synthesization, expression, purification and activity assay of hIGF-1
Yuan GAO ; Rongjie YU ; An HONG ; Zhiyin LI
Chinese Journal of Pathophysiology 1986;0(02):-
AIM: To express the synthesized human insul in like growth factor I (hIGF-1) gene in E.coli with high expression level a nd explore the way to increase the efficiency of factor Xa cleavage. METHODS: The gene of hIGF-1 was designed and synthesized accordi n g to the preference of E.coli. A fusion protein with a recognized site of fa ctor Xa between CBD (cellulose binding domain) and hIGF-1 was expressed and puri fied by cellulose affinity chromatography. MTT method was used to assay the bioa ctivity of CBD-IGF fusion protein. hIGF-1 was released by factor Xa. In order to improve the sensitivity of fusion protein to factor Xa, the short flexible pept ide (Gly-Thr-Gly- Gly-Gly-Ser-Gly) was added before the recognized site of fac tor Xa. RESULTS: SDS-PAGE results indicated that the CBD-IGF fusion prot ein was expressed and purified . Biological assay results indicated CBD-IGF fusi on protein could promote the growth of NIH3T3 cell. The short flexible peptide (Gly-Thr-Gly-Gly-Gly-Ser-Gly), which was added before the recognized site of f actor Xa, improved the sensitivity of fusion protein to factor Xa. CONCLUSION: CBD-IGF fusion protein with bioactivite are expresse d and purified. The amio acid sequences changes between the site recognize of fa ctor Xa can help to improve the cleavage efficiency of Factor Xa.
10.Comparison of clinical efficacy of gefitinib and erlotinib treating non-small-cell lung cancer with epider-mal growth factor receptor mutation in either exon 19 or 21
Jie SHEN ; Yirong LI ; Yuan GAO ; Hui GAO ; Lu BAI
Journal of International Oncology 2016;43(9):659-663
Objective To compare the clinical outcomes of gefitinib and erlotinib treating non-small-cell lung cancer (NSCLC)with epidermal growth factor receptor (EGFR)mutation in either exon 19 or 21 . Methods A total of 242 patients diagnosed as NSCLC with EGFR mutation in either exon 19 or 21 from May 201 3 to December 2014 in our hospital were chosen in this study.According to age,sex,smoking history,eastern cooperative oncology group performance status and types of EGFR mutation,all the patients were matched to 121 pairs,and randomly divided into group A and B.Patients in group A received gefitinib treatment,and those in group B received erlotinib treatment.Based on the response evaluation criteria in solid tumors (RECIST),overall response rate (ORR),disease control rate (DCR),progression-free survival (PFS)were assessed.To assess the independent risk factors for PFS by univariate and multivariate Cox regression analysis.The subgroup analysis was performed for the 63 NSCLC patients using these two drugs as the first-line treatment.To evaluate the adverse drug reactions and quality of life between A and B groups.Results The median PFS of group A and B were 11 .6 months and 9.5 months,respectively,with no significant difference (HR =0.39,P >0.05).The ORR and DCR in the two groups were 76.9%,74.4% (χ2 =1 .03,P =0.58)and 90.1 %,86.8% (χ2 =1 .46,P =0.31 ). The independent risk factors of poor PFS were ECOG PS≥2 (HR =2.60,95%CI:1 .54 -4.43,P =0.001 )and non-adenocarcinoma (HR =3.61 ,95%CI:1 .54-8.66,P =0.003).For patients receiving these two drugs as the first-line treatment,there was no significant difference between two groups in overall response rates (76.6% vs. 90.2%,χ2 =0.83,P =0.12)and median PFS (11 .6 months vs.14.4 months,HR =0.59,P >0.05).The adverse drug reactions were significant differences in emotion function (F =10.27,P =0.03),diarrhea (F =10.24,P =0.03)and pain (F =9.02,P =0.04).After receiving drug treatment,the quality of life scores were improved,and most of the differences were statistically significant between A and B groups(P <0.05). Conclusion As for NSCLC with EGFR mutation in either exon 1 9 or 21 ,both gefitinib and erlotinib are well tolerated and have similar clinical effectiveness.