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<p><b>OBJECTIVE</b>To investigate the changes of ID1 expression in tumor cells treated with etoposide, cisplatin and ultraviolet (UV) irradiation, and explore the effect of ID1 on chemotherapeutic drug- and UV-induced apoptosis.</p><p><b>METHODS</b>In the present study, upon onset of apoptosis induced by various kinds of inducers such as etoposide, cisplatin and UV irradiation, the expression level of ID1 was detected by Western blot and real-time PCR. We also analyzed the half-life of ID1 protein and stability of ID1 mRNA respectively by cycloheximide inhibition test and RT-PCR. Annexin-V assay was carried out to evaluate the contribution of ID1 protein to chemotherapeutic drug- and UV-induced apoptosis.</p><p><b>RESULTS</b>ID1 expression presented a profound down-regulation in the HCT116 cells treated with etoposide, cisplatin and UV irradiation(P<0.05 for all). The apoptosis in the UV irradiation group, cisplatin group, etoposide group was (58.70±1.55)%, (35.80±0.92)% and (21.00±0.72)%, respectively, significantly higher than that of the control group(1.10±0.07)%, (1.20±0.13)% and (3.50±0.23)% (P<0.05 for all). Upon etoposide treatment, ID1 expression level was decreased via induction of mRNA instability, but not the protein degradation changes. Additionally, ectopic expression of ID1 in the HCT116 cells alleviated etoposide-, cisplatin- and UV-induced apoptosis. The results of flow eytometry revealed that the percentage of apoptotic cells in the ID1 group under the treatment of etoposide, cisplatin and UV irradiation was (23.80±0.82)%, (17.80±1.34)% and (13.40±0.53)%, respectively, significantly lower than that in the empty vector group (41.10±1.61)%, (30.40±2.67)% and (22.50±3.47)% (P<0.05 for all).</p><p><b>CONCLUSIONS</b>These observations indicate that the treatment with etoposide reduces the amount of ID1 by induction of mRNA instability, and exogenously introduced ID1 protects cells against etoposide-, cisplatin- and UV irradiation-induced apoptosis. Inhibition of the ID1 bioactivity may become a new strategy in cancer treatment.</p>
Subject(s)
Humans , Antineoplastic Agents , Pharmacology , Apoptosis , Cisplatin , Pharmacology , Down-Regulation , Etoposide , Pharmacology , HCT116 Cells , Metabolism , Radiation Effects , Half-Life , Inhibitor of Differentiation Protein 1 , Genetics , Metabolism , RNA, Messenger , Metabolism , Real-Time Polymerase Chain Reaction , Ultraviolet RaysABSTRACT
Objective To compare the prognosis efficacy between total laparoscopic gastrectomy and or-dinary gastric cancer for familial gastric cancer.Methods The selected 60 patients with ordinary gastric cancer from August 2012 to 2014 in our hospital as the control group,the same period in familial gastric cancer of 40 pa-tients were chosen as control group.All patients were performed by total laparoscopic gastrectomy.Results The operative time,blood loss,postoperative discharge time compared in the two groups were showed no significant differences.However,the postoperative hospital stayed in the observation group and the number of lymph nodes were significantly longer more than the control group( P<0.001) .The postoperative pulmonary infection,intesti-nal obstruction,abdominal infection,anastomotic leakage,anastomotic bleeding and other complications in the ob-servation group were significantly lower than in the control group( P<0.001) .After the investigation,the dyspha-gia,pain,anxiety,physical appearance,dry mouth scores in the observation group were significantly higher(P<0. 001).Conclusion Familial gastric cancer has unique clinical and pathological features,Compared to ordinary stomach,the total laparoscopic gastrectomy treatment of familial gastric cancer need more lymph nodes dissection, it can cause more complications,it has some impacts on the quality of life for patients.
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Objective To analyze the growth and development condition of the children with cerebral palsy,and to investigate the influence of puberty on their adult height.Methods 56 children with cerebral palsy were selected as research subjects.34 healthy children were selected as control group.Their height and weight were measured,the development condition of their sexual character was checked,and then standard deviation of height and weight,height age and bone age were calculated,adult height and target height were predicted and analyzed.Results The standard deviation of height and weight in cerebral palsy group was (-1.29 ± 1.39) and (-0.77 ±1.20) respectively,which was lower than that of the normal control group[(0.40 ±0.95),(0.38 ± 1.01)] (t =-6.270,-4.6 7 6,all P ＜ 0.0 5).In preadolescent cerebral palsy group,the chronobiological age was bigger than their height age and bone age,the difference was significant (t =6.381,7.939,all P ＜ 0.05),but there was no significant difference between height age and bone age (P ＞ 0.05),there existed no significant difference between predicted adult height and target height(P ＞ 0.05).In adolescem cerebral palsy group,the chronobiological age and bone age were larger than their height age,which indicated significant difference (t =3.438,-3.759,all P ＜ 0.05),but there was no significant difference between the chronobiological age and bone age (P ＞ 0.05),the predicted adult height was lower than target height,the difference was significant (t =-5.204,P ＜ 0.05).Conclusion The growth and development of children with cerebral palsy would usually fall behind the normal children,but showed similarity in terms of starting age and process of puberty.After puberty,their bone age would increase dramatically,their predicted adult height would fall behind target height distinctly.
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The authors introduced,against the backdrop of the new round of accreditation,organization and practice of the hospital.In accordance with the five management elements of planning,organization,leadership,coordination and control,and the level management theory,the hospital divided,based on a top-down design and step-by-step implementation,the process into four stages of mobilization and deployment,study and training,self-assessment and rectification,supervised self-assessment and constant improvement.These efforts aim at exploring the key points and methodology of hospital accreditation,proposing such key points as the combination of the accreditation with building a long-term mechanism,that of theory with practice,that leadership with full staff involvement,that of top-down design with step-by-step implementation,that of training and rectification,that of self-assessment and supervision,and that of system management with implementation of provisions.This way the hospital accreditation may upgrade the hospital as a whole.
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Objective To assess the value of primary resection and anastomosis without intraoperative irrigation in the patients with obstructive left colonic cancer. Method Between January 2000 and January 2008, 93patients underwent primary resection and anastomosis for colonic cancers were analyzed retrospectively. Primary resection and anastomosis without intraoperative colonic irrigation (decompression by manual defecation) was performed in 43 patients with obstructive left colonic caner and traditional left-sided colectomy in 50 cases without obstruction. Both groups of patients were comparable in terms of gender, nutritional status, underlaying disease, tumor location and stage, etc ( P = 0.83,0.13,0.29,0.51,0.38). The average age of the patients with colonic obstruction was significant older than that of the cases without obstruction (61.2 ± 8.6 vs. 58.1 ±7.8, P =0.010).The operative results were compared between patients with obstructive colonic cancer and cases without obstruction.Results The mean hospital stay of the primary anastomosis group and traditional left-sided colectomy group were (16.6±7.8) d and (12.4±5.4) d respectively, and the former was significant longer than the latter (P =0.002). The costs of hospitalization in the two groups were (50192.8 ± 39727.4) RMB and (46489.3 ±29543.1)RMB respectively (P = 0.04) . The morbidity and mortality in the two groups were 25.6% (11/43) vs. 18%(9/50) (P =0.375) and 2.3% (1/43) vs. 2.0% (1/50) (P =0.714) respectively, and there were no significant difference between the two groups. Conclusions Primary resection and anastomosis without intraoperative colonic irrigation (decompression by manual defecation) compares favorably with traditional left-sided colectomy in safety and efficiency for left colonic cancer with obstruction.
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Objective To assess the value of primary resection and anastomosis with intraoperative colonic defecation in the patients with obstructive left colonic cancer. Methods From January 2000 to January 2008, 39 patients undergoing emergency laparotomy for left colonic cancers with complete obstruction were analyzed retrospectively. Results The patients were 25 males and 14 females, with a median age of 68.5 years (range: 57～78 years). The primary tumors were located at splenic flexure (3/7.7%), descending colon (8/20.5%), sigmoid colon (15/38.5%), boundary of sigmoid colon and rectum (8/20.5%), and superior segment of rectum (5/12.8%). Primary resection and anastomosis with intraoperative colonic de-fection were performed in 18 patients with left hemicolectomy, 13 patients with sigmoid colectomy and 8 pa-tients with anterior resection. Early complications included wound infection in 4 patients (wound disruption in 1 patient) and pulmonary infection in 5 patients. One patient complicated with anastomotic leakage and intra-abdominal abscess died of tumor metastasis after reoperation. Another one died of respiratory failure secondary to pulmonary infection. Morbidity and mortality was 25.6% and 5.1% respectively. Conclusion Primary resection with intraoperative colonic defecation can be applied to patients with malignant colonic complete obstruction with good operative results.
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Objective To evaluate the prognostic significance of metastastic lymph node ratio in patients with gastric cancer. Methods Clinical data of 319 patients with gastric cancer who underwent radical gastrectomy with at least 15 lymph nodes dissected per patient were analyzed retrospectively. Patients were divided into 4 groups according to the TNM staging system (1997,5th edition): pN0 (no positive lymph node), pN1(with 1～6 metastatic lymph nodes), pN2 group (with 7～15 metastatic lymph nodes), and pN3 group (with more than 15 metastatic lymph nodes), or into 4 groups according to the lymph node metastatic ratio: rN0 group (without metastasis of lymph node), rN1 group (with a lymph node metastatic ratio of <30%), rN2 group (with a lymph node metastatic ratio of 30%～60%), and rN3 group ( with a lymph node metastatic ratio of >60%). Survival was determined by the Kaplan-Meier method and differences were assessed by the Log-rank test. Multivariate analysis was performed using the COX proportional hazard regression model in forward stepwise regression with SPSS 13.0. Results Kaplan-Meier survival analysis demonstrated that the metastatic lymph node ratio significantly influenced the postoperative survival time. According to the lymph node metastasis system 77 patients were in group 1, 109in group 2, 60 in group 3, and 73 in group 4. The 2-year survival rate was 84.4%,66.1%, 35.0%,and 15.1% respectively, 3-year survival rate was 80.5%,45.0%,15.0% and 5.5% respectively, and 4-year survival rate was 71.4%,33.0%,5.0% and 1.4% respectively. If cases with the same positive number of lymph node (pN) group were stratified futher by lymph node metastatic ratio, there were no significant differences in the 3-year survival rate among the new rN groups (P>0.05), but there was a great difference in the distribution of prognosis among different groups. COX proportional hazard regression model analysis showed that the metastatic lymph node ratio was an independent factor for poor prognosis. Lymph node metastatic ratio was closely related with the location, modality of the operation and infiltration depth. Conclusions The staging system based on metastatic lymph node ratio is more reliable than the system based on the number of metastatic lymph nodes in the prediction of the prognosis of gastric cancer.