1.Studies on the effects of EGF and EGFR on the injury of mice intestines induced by neutron and ?-ray irradiation
Ruiyun PENG ; Yabing GAO ; Haoyu CHEN
Medical Journal of Chinese People's Liberation Army 2001;0(10):-
Objective To study comparatively the changes in epi th elial growth factor (EGF) and its receptor (EGFR) in injured intestine induced b y neutron and ?-ray irradiation in mice and their significance. Method s 350 male BALB/C mice were irradiated with neutron and ?-rays, and t hey were sacrificed at 6 and 12 hours and 1, 2, 3, 4, 5, 7, 10, 14, 21 and 28 da ys, respectively, after irradiation. Immunohistochemical method was employed to assess EGF and EGFR in the intestinal tissue of the mice. Results After the neutron radiation with 2.5Gy dosage, the expressions of EGF and E GFR in the cytoplasm of mucosa epithelial cells and crypt cells were obviously u p-regulated within 1 day, decreased after 1~2 days, increased again on 3~7 days , reached the peak value at the 5th day, and returned to normal values in 14 day s. Whereas EGF and EGFR were increased at 6 hours and progressively decreased fr om 12 hours up to 4 days after 4.0 and 5.5Gy neutron and 12Gy g-ray radiation . They were increased progressively within 3 days, reaching peak value on the 3r d day, and returned to normal values 5 days after 5.5Gy g-ray irradiation. Conclusions The expressions of endogenous EGF and EGFR showed diffe rent regularities after neutron and g-ray radiation, and they were involved in the pathologic courses of radiation damage and recovery of the intestine.
2.Correlation among differentiation, serum cholesterol, LDL and HDL in patients with gastric cancer
Ruiyun CHEN ; Zhen GUO ; Chunxiang WANG ; Peilin WANG
Chinese Journal of Current Advances in General Surgery 2009;0(08):-
Objective: To survey the content of serum total cholesterol, LDL and HDL in pa- tients with gastric cancer and to investigate the correlation between serum total cholesterol, LDL, HDL and the differentiation of gastric cancer. Methods: 143 patients with gastric cancer were selected and assigned into 3 groups according to pathology grouping after operation: 1) the well-differentiated group, consisting of 16 patients with papillary adenocarcinoma, and 43 patients with tubi-form well-differentiated adenocarcinoma; 2) the moderately differentiated group, including 39 patients with tubiform moderately differentiated adenocarcinoma, 3) the poorly differentiated group, including 20 patients with poorly differentiated adenocarcinoma, and 14 patients with mucinous adenocarcinoma, and 11 patients with signetring cell carcinoma. In addition, 30 patients with gastric ulcer and 30 health adults were selected as control. Veinous blood of every member was collected, and then the content of serum total cholesterol was surveyed by enzymic method, and the contents of serum LDL and HDL were measured by precipitation method. Results: The level of serum total cholesterol, LDL and HDL before operation in patients with gastric cancer decreased significantly than those with gastric ulcer and normal people (P0.05). There was statistically significance among different differentiation in patients with gastric cancer. The differences of levels of serum total cholesterol, LDL and HDL were statistically significant in gastric cancer of different differentiated groups. The contents of serum cholesterol, LDL and HDL in 40 patients with gastric cancer after operation were higher than those before operation obviously (P
3.Significance of c-Myc in prognostic evaluation of gastric mucosa associated lymphoid tissue lymphoma
Jian YANG ; Guofeng SUN ; Cuiying WANG ; Chengcong LIU ; Zhiyuan XING ; Ruiyun CHEN ; Jianjun XIN ; Chen TIAN
Tianjin Medical Journal 2017;45(7):722-725
Objective To investigate the expression of c-Myc in gastric mucosa associated lymphoid tissue (MALT) lymphoma and its implications on prognosis.Methods The clinical data of 79 patients hospitalized in our hospital from 2009 to 2015 were retrospectively analyzed.In these patients,38 patients were low-grade MALT lymphoma,20 patients were high-grade MALT lymphoma,21 patients were diffused large B cell lymphoma (DLBCL).Real-time PCR was used to detect the levels of c-Myc expression in gastric MALT tissues and pair-matched adjacent normal tissues.The relationship between the expression of c-Myc and prognosis of patients was evaluated combing with the clinical data.Results Compared with the normal tissues,the expression levels of c-Myc protein were 15.7% (6/38),25% (5/20) and 28.5% (6/21)in patients with low-grade MALT lymphoma,high-grade MALT lymphoma,and DLBCL.The relative expression levels of cMyc mRNA were gradually elevated in low-grade MALT lymphoma,high-grade MALT lymphoma and DLBCL.The tumor size and depth of invasion can influence the expression level of c-Myc.Survival analysis found that the overall survival rates and relapse-free survival rates were lower in patients with c-Myc positive expression than those of patients with negative expression (P < 0.05).Conclusion C-Myc plays a key role in the malignant transformation of gastric MALT lymphoma.
4.The effect of thermal ablation combined TACE on the prognosis of small liver carcinoma
Jizong LIN ; Chenhu WANG ; Nan LIN ; Kunpeng HU ; Shuxian CHEN ; Heping FANG ; Ruiyun XU
Chinese Journal of General Surgery 2013;28(11):874-877
Objective To analyze the short-term and long-term effectiveness of radiofrequency ablation combined with transcatheter arterial chemoembolization (TACE) for the treatment of hepatocellular carcinoma (HCC).Methods The clinical data of 70 HCC patients who had received thermal ablation (group A) done or in combination with TACE (group B) were retrospectively analyzed.Results The rate of intrahepatic distant recurrence in group B (25 cases) was lower than that in group A (45 cases) (X2 =3.845,P =0.046) and the tumor-free survival rate was higher than group A (X2 =5.020,P =O.030).There were no differences in the local tumor progression rate (X2 =0.853,P =0.374) and overall survival (x2 =2.316,P =0.154) between two groups.Incidence of bone marrow suppression in group B was higher than that of group A (X2 =5.642,P =0.042).Major complications didn't occur in any group(X2 =2.016,P =0.183).The costs was higher(t =7.738,P <0.001) and the hospital stay was longer (t =5.921,P =0.003) in group B than group A.Conclusions Compared with ablation alone,combined therapy is able to reduce short-term recurrence,and improve tumor-free survival.Combine therapy is safe and effective method for small liver carcinoma.
5.Tissue-Link and Cusa vs Pringle's maneuver in hepatectomy for hepatocellular carcinoma
Jizong LIN ; Feilong WU ; Yunbiao LING ; Shuxian CHEN ; Nan LIN ; Ruiyun XU
Chinese Journal of General Surgery 2015;30(8):623-626
Objective To evaluate the short-term and long-term elinical effect of hepatectomy using Tissue-Link & Cusa,compared to the Pringle maneuver.Methods Clinical data of 87 HCC patients who had received hepatectomy by the Pringle's Maneuver (group A) or Tissue-Link & Cusa (group B) were retrospectively analyzed.Results The average amount of bleeding in Group A was more than group B (t =2.030,P =0.023).The time of operation in group A was shorter than group B (t =-2.896,P =0.006).The postoperative supplement of albumin in group A was more than group B,the level of serum total bilirubin on 7th day after operation was higher than group B (P < 0.05).There was no significant difference in postoperation complications and the time in hospital (P >0.05).The rate of incisional recurrence and the rate of metastasis in or out of the liver in group A were higher than group B (P =0.029,0.021,0.016).The 2-and 3-year tumor-free survival rates and the 3-year overall survival rates in group A were lower than that in group B (P =0.047,0.036,0.042).Conclusions Hepatectomy using Tissue-Link & Cusa is superior to the Pringle's maneuver for the treatment of primary hepatocellular carcinoma.It has a clear operative field,less operative bleeding,less damage to liver function and a lower relapse rate of incisional margin.
6.Rat bone marrow mesenchymal stem cells induce hepatic stellate cells apoptosis in vivo
Nan LIN ; Shujie XIE ; Weidong PAN ; Kunpeng HU ; Si CHEN ; Yutian CHONG ; Peng XIANG ; Ruiyun XU
Chinese Journal of Tissue Engineering Research 2010;14(10):1769-1774
BACKGROUND:It is reported that bone marrow mesenchymal stem cell(BMSC)transplantation might be a promising treatment for liver fibrosis.But the mechanism is still unclear.OBJECTIVE:To observe the hepatic stellate cells apoptosis induced by BMSC transplantation,and to study the mechanism of BMSC in treating hepatic fibrosis in vivo.METHODS:CCl_4 subcutaneous injection was performed to induce rat liver fibrosis.After 8 weeks of CCU injection,20 rats which underwent successful model establishment were randomly divided into experimental group and control group,10 in each group.The experimental group received MSC transplantation via tail vein injection,and the control group were given DMEM instead.The rats were killed and the livers were harvested at three time point,the day of MSC transplantation,3 days after transplantation,and 7 days after transplantation.The hydroxyproline content was detected by HE and Masson staining,and the expression changes of α-smooth muscle actin(α-SMA)proteins were determined using immunohistochemistry.The apoptosis of hepatic stellate cells were determined by α-SMA and TUNEL(terminal dUTP nick-end labeling)dual-staining.RESULTS AND CONCLUSION:After 8 weeks of CCU injection,the hydroxyproline content increased and histology indicated progress of liver fibrosis.At 7 days after MSC transplantation,the hydroxyproline in the liver was decreased,and the liver fibrosis was alleviated in the experimental group but aggravated in the control group.Immunohistochemistry indicated that α-SMA positive cells were increased at 8 weeks after CCU injection.At day 7 after transplantation,α-SMA positive cells in the experimental group were significantly less than control group(P < 0.05).At 3 days after transplantation,the hepatic stellate cells apoptosis in the experimental group was significantly aggravated compared with control group(P < 0.05).This suggested that MSC transplant was an effective treatment for liver fibrosis.MSC inducing hepatic stellate cells apoptosis may be one of the mechanisms.
7.Thrombolysis through portal vein port-catheter kit for the treatment of portal vein thrombosis
Heping FANG ; Shuxian CHEN ; Meihai DENG ; Weidong PAN ; Yunbiao LING ; Ruiyun XU
Chinese Journal of General Surgery 2008;23(11):832-834
Objective To evaluate a thrombolytic system of portal vein port-catheter kit (PC) in the treatment of portal vein thrombosis (PVT). Methods In this study, 42 PVT patients with liver cirrhosis and portal hypertension after splenectomy from 2005 to 2007 were divided into two groups. In group A (20 eases) thrombolysis was administered through the PC device. Urokinase at the dosage of 1000 U?kg-1?h-1 was given for a consecutive 3 -6 days through the PC, and then the therapy was converted to 100 AxaIU/kg of low molecular heparin twice a day for 7 days subcutaneously. In group B, the thrombolysis was performed on 22 patients through peripheral veins. The therapy was same as in group A except for that the urokinase dosage was doubled. The complete thrombolysis rate, the effective thrombolysis rate, the time of thrombolysis, the long-term recurrence rate and the incidence of complication were compared between the two groups. Results The complete thrombolysis rate and the effective thrombolysis rate in group A were 75%, 90% respectively, compared with that of 41%, 59% respectively in group B. The significant differences in the complete thrombolysis rate, the effective thrombolysis rate, the time of thrombolysis and the incidence of complication were found between the two groups, while the thrombolysis recurrence rate had no significant difference between the two groups. Conclusion PC regime is an effective and safe method for the treatment of portal vein thrombosis.
8.The effect of preoperative transarterial chemoembolization on hepatectomy of hepatocellular carcinoma
Jizong LIN ; Xusheng TU ; Yunbiao LING ; Feilong WU ; Shuxian CHEN ; Ruiyun XU
Chinese Journal of General Surgery 2015;30(10):777-780
Objective To evaluate the effect of preoperative transarterial chemoembolization (TACE) for resectable hepatocellular carcinoma (HCC).Methods HCC patients undergoing up-front hepatectomy (group A) were compared with those receiving TACE before hepatectomy (group B).Results Tumor size decreased significantly after TACE (t =3.3 1,P =0.021).The rates of tumor encapsulation and liver adhesions were significantly more often seen in group B.There were fewer tumor-residual and more frequent necrosis in group B.Operative time in group B was longer (t =2.71 ,P =0.046).The average blood loss and complication rate were of no difference between the two groups.The occurrence of pleural effusion and intrahepatic recurrence rate in group A was higher than group B (x2 =3.85 ,P =0.031) (x2 =2.76,P =0.046).The overall survival rate from the second year postoperative in group B was higher than group A (x2 =3.37, P =0.043).Conclusions TACE could diminish tumor, advance encapsulation and reduce tumor-residual.Preoperative TACE does not improve 1-, 2-, and 3-year tumor-free survival rates but improve 1-, 2-, and 3-year overall survival rates.
9.Study on Risk Factors Related with Chronic Stuttering for 2~10 Years Old Children
Chunyang LIU ; Aimin LIANG ; Ruiyun SHEN ; Zhuang WEI ; Ke CHEN ; Yanmei XING ; Chenying ZHANG
Chinese Journal of Rehabilitation Theory and Practice 2007;13(6):558-560
Objective To investigate the risk factors related with chronic stuttering of children lasting more than 6 months.MethodsThe data of 109 children of 2~10 years old with chronic stuttering lasting more than 6 months and 68 children with developmental stuttering lasting less than 6 months were analyzed.ResultsThe minor symptom and escape behavior in the stuttering children group were significantly more than children in the control group. The risk factors related with chronic stuttering showed by Logistic regression analysis were as follows: care about their stuttering, not professional advice and training, the attitude of parents on stuttering, family history, incorrect rectifying methods, few family members, improper family bring-up environment.ConclusionChildren with minor symptom and escape behavior concurrent with stuttering, care about their stuttering and with family record, are susceptible to chronic stuttering. Following factors are found important to chronic stuttering: professional advice and training, the attitude of parents to stuttering, methods of parents correcting stuttering, number of family members, bring-up environment of family.
10.Protective effect of active ingredients of Kang Fu Ling on PC12 cells oxidative injury induced by microwave irradiation
Junjun CHEN ; Hongying BAI ; Ruiyun PENG ; Li ZHAO ; Yunliang WANG ; Shaohua HU ; Xueyan ZHANG ; Zhixiu XU ; Yanhui HAO
Military Medical Sciences 2016;40(4):281-284
Objective To observe the effect of the three active ingredients of a Chinese traditional medicine compound named Kang Fu Ling( KFL) against PC12 cells oxidative damage induced by microwave radiation.Methods PC12 cells were differentiated into neuros induced by nerve growth factor ( NGF ) .PC12 cells were incubated for 48 hours after astragalosides,total paeony glycoside and tanshinones were added at different concentrations (1, 3, or 9 μg/ml) .The cells in the control group were cultivated with the only medium of the same volume.Then, cells were irradiated with 30 mW/cm2 microwave for 6 minutes.The morphology of PC12 cells was observed under an inverted microscope soon before and after irradiation and the cell viability was measured by methylthiazolyl tetrazolium ( MTT) colorimetry.Reactive oxygen species ( ROS ) was determined using active oxygen probe 2′, 7′-dichlorodihyarofluolescen diacetde ( DCFH-DA ) while malonyldialdehyde(MDA) was measured in the homogenate of PC12 cells through thiobarbituric acid ( TBA) reactive substance assay.Results The cell morphology of each group showed no obvious difference.6 h after irradiation, the viability of irradiation control group measured by MTT declined apparently(P<0.01)compared with the normal control group.The 3 μg/ml astragalosides treatment group increased the viability of PC12 cells after microwave exposure ( P <0.01).The contents of ROS and MDA were increased after irradiation(P<0.01).However, in the three active ingredients of Kang Fu Ling treatment groups, both ROS and MDA were much lower than in irradiation control group.Conclusion Astragalosides, total paeony glycoside and tanshinones, which are the three active ingredients of Kang Fu Ling, all have protective effect against PC12 cell injury caused by microwave radiation,possibly by scavenging free radicals and reducing oxidative stress injury.