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Objective:To discuss the effect of royal jelly acid(10-HDA)on the proliferation and migration of the human colon cancer SW620 cells based on the network pharmacology,and to clarify its related molecular mechanism.Methods:The active ingredients such as 10-HDA and their corresponding targets were retrieved by using the keyword"royal jelly"from the Traditiomal Chinese Medicine Systems Pharmacology(TMSCP)Database and the Traditiomal Chinese Medicine Integrated Database(TCMID);the small molecule targets were predicted by the Swiss Target Prediction Database.The GeneCards Database and the Online Mendelian Inheritance in Man(OMIM)Database were used to obtain the targets with the keyword"Colon Cancer";the protein-protein interaction(PPI)network was constructed by using the String Database and Cytoscape 3.8.0 Software to screen the core targets;the Gene Ontology(GO)function enrichment analysis and Kyoto Encyclopedia of Genes and Genomes(KEGG)signaling pathway enrichment analysis were analyzed by Metascape Database;the specific ingredient 10-HDA was screened for the in vitro activity experiments.The human colon cancer SW620 cells with good growth status were divided into control group and different doses(1,5,10,15,and 20 mmol·L-1)of 10-HDA groups.The viabilities of the cells in various groups were detected by MTT method and the survival rates of the cells were calculated.The SW620 cells were divided into control group,low dose(5 mmol·L-1)of 10-HDA group,middle dose(10 mmol·L-1)of 10-HDA group,and high dose(15 mmol·L-1)of 10-HDA group;Hoechst33342 staining method was used to observe the morphology of the cells in various groups;cell scratch test was used to detect the scratch healing rates of the cells in various groups;flow cytometry was used to detect the percentages of the cells at different cell cycles in various groups;biochemical method was used to detect the activities of total antioxidant capacity(T-AOC)and superoxide dismutase(SOD)in the cells in various groups;Western blotting method was used to detect the expression levels of B-cell lymphoma 2(Bcl-2),Bcl-2-associated X protein(Bax),cysteine-containing aspartate proteolytic enzyme-3(Caspase-3),cysteine-containing aspartate proteolytic enzyme-9(Caspase-9),glycogen synthase kinase 3β(GSK3β),β-catenin,and cyclin D1 proteins in the cells in various groups.Results:Six active ingredients of royal jelly were screened out by the TCMSP Database,and 28 core targets of 10-HDA in the treatment of colon cancer were obtained.The GO function enrichment analysis mainly included the signaling pathways such as cell proliferation and apoptosis.The KEGG signaling pathway enrichment analysis included the cell cycle,prostate cancer,cell senescence,and p53 signaling pathways;the GSK3β/β-catenin signaling pathway was closely related to the cell cycle.Compared with control group,the viabilities of the cells in 5,10,15,and 20 mmol·L-110-HDA groups were decreased in a dose-dependent manner(P<0.05 or P<0.01),the numbers of apoptotic cells in different doses of 10-HDA groups were significantly increased,and the scratch healing rates of the cells were significantly decreased(P<0.05 or P<0.01);the percentages of the cells at S phase in middle and high doses of 10-HDA groups were significantly increased(P<0.05 or P<0.01),the activities of T-AOC and SOD in the cells in different doses of 10-HDA groups were significantly decreased(P<0.05 or P<0.01).Compared with control group,the expression level of Bcl-2 protein in the cells in low dose of 10-HDA group was significantly decreased(P<0.01),and the expression level of GSK3β protein was significantly increased(P<0.05);compared with control group,the expression levels of Bax,Caspase-3,Caspase-9,and GSK3β proteins in the cells in middle and high doses of 10-HDA groups were significantly increased(P<0.05 or P<0.01),and the expression levels of Bcl-2,β-catenin,and CyclinD1 proteins were significantly decreased(P<0.01).Conclusion:10-HDA can significantly inhibit the proliferation and migration of the colon cancer cells and promote the apoptosis and oxidation levels of the colon cancer cells,and its mechanism may be related to the activation of the GSK3β/β-catenin signaling pathway.
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Objective@#To compare the effects of laparoscope and open complete mesocolic excision (CME) in the treatment of right colon cancer.@*Methods@#The retrospective case-control study was adopted.The clinical data of 139 patients with right colon cancer who underwent CME at the Second People's Hospital of Lianyungang from January 2014 to November 2017 were collected.The patients were divided into laparoscopy group(55 cases) and open group(84 cases). The postoperative recovery and oncology efficacy were compared.@*Results@#The operation time in the laparoscopy group[(172.8±25.9)min]was longer than that in the open group[(142.3±20.6)min](t=7.387, P<0.05), but the blood loss of the laparoscopy group[(111.6±36.7)mL] was less than that in the open group[(150.1±61.1)mL](t=4.017, P<0.05). There was no statistically significant difference in numbers of lymph nodes harvested.Compared with open group, there were advantages in the laparoscopy group such as less anal exhaust time, less postoperative eating liquid diet time and shorter hospitalization time, the differences were statistically significant (t=4.695, 5.517, 4.642, all P<0.05). There was no statistically significant difference in postoperative complication rate (P>0.05). There were no statistically significant differences in the cumulative recurrence rate, cumulative survival rate and cumulative survival rate between the two groups after 3 years (all P>0.05).@*Conclusion@#Laparoscopic CME is minimally invasive and quick recovery, and laparoscopic CME has the same oncologic clearance effects, and is worthy of clinical application.
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Objective: To investigate the effects of miR-26a targeting high mobility group protein 1 (HMGA1) gene on the growth, invasion and migration of colon cancer cells, and to clarify whether the HMGA1 gene was the target gene of miR-26a. Methods: The miR-NC (miR-NC group), miR-26a mimics (miR-26a mimics group) and miR-26a inhibitor (miR-26a inhibitor group) were transfected into the human colon cancer SW480 cells. RT-PCR and Western blotting methods were used to detect the mRNA and protein expression levels of HMGA1. Luciferase reporter gene detection kit was used to detect the double luciferase activity in SW480 cells and to determine whether HMGA1 was the target gene of miR-26a. The cell proliferation activities of cells in various groups were detected by CCK8 assay; the number of invasion and migration cells was detected by Transwell chamber method. Results: HMGA1 gene was the target gene of miR-26a. Compared with miR-NC group, the proliferation activities of colon cancer SW480 cells in miR-26a mimics group at after 24, 48 and 72 h after transfection were significantly decreased (P<0. 01), while the proliferation activities of colon cancer SW480 cells in miR-26a inhibitor group were significantly increased (P<0. 01). Compared with miR-NC group, the proliferation activities of colon cancer SW480 cells, the number of invasion and migration cells in miR-26a mimics group and miR-26a mimics + pcDNA3. 1-HMGA1 group at different time points were significantly decreased (P<0. 01); the proliferation activities of colon cancer SW480 cells, the number of invasion and migration cells in miR-NC + pcDNA3. 1-HMGA1 group were increased (P<0. 01). Compared with miR-26a mimics group, the proliferation activities of colon cancer SW480 cells, the number of invasion and migration cells in miR-26a mimics+ pcDNA3. 1-HMGA1 group at different time points were increased (P<0. 01); compared with miR-NC+pcDNA3. 1-HMGA1 group, the proliferation activities of colon cancer SW480 cells, the number of invasion and migration cells in miR-26 mimics + pcDNA3. 1-HMGA1 group at different time points were decreased (P<0. 01). Conclusion: HMGA1 gene is the target gene of miR-26a. Up-regulation of the expression of miR-26a can inhibit the proliferation of colon cancer SW480 cells and downregulation of the expression of miR-26a can promote the proliferation of colon cancer SW480 cells.
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Introducción: La gangrena espontánea por Clostridium septicum es una entidad poco frecuente con una alta mortalidad que se asocia a pacientes neoplásicos y/o inmunodeprimidos. Caso clínico: Presentamos un caso de gangrena clostridial en un paciente con neoplasia de colon ascendente perforada a retroperitoneo. Discusión-conclusiones: Aunque es poco común deberemos pensar en una infección clostridial en pacientes sépticos y sospecha de neoplasia colónica. En ausencia de diagnóstico y tratamiento precoz, el pronóstico es fatal.
Introduction: Spontaneous gangrene due to Clostridium septicum is a low frequency pathology with a high mortality rate. It is related to neoplasic and/or immunodeficient patients. Case report: We present the case of a patient who presented clostridial gangrene associated with a perforated colon neoplasm. Discussion-conclusions: Although it is not very common it must supposed a clostridial infection in septic patients with colon neoplasm suspect. If diagnosis and treatment are delayed the prognostic of the patient is fatal.
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Humanos , Masculino , Idoso , Neoplasias do Colo/complicações , Neoplasias do Colo/diagnóstico , Fasciite Necrosante/diagnóstico , Fasciite Necrosante/etiologia , Clostridium septicum , Neoplasias do Colo/cirurgia , Fasciite Necrosante/cirurgia , Evolução Fatal , Perfuração Intestinal/etiologiaRESUMO
Objective To evaluate the effect of silencing ACAT1 gene on colon cancer cells proliferation,migration,invasion and colon cancer development by using the small interference RNA (siRNA) in colon cancer cell line HT-29.Methods Acyl coenzyme A cholesterol acyltransferase 1 (ACAT1) gene was silenced in HT-29 cell lines using Hiperfect transfection reagent.The expression level of ACAT1 was detected by real time PCR.CFSE and transwell assays were used to evaluate the effect of ACAT1 gene interfering on cells proliferation,mi gration and invasion.Result ACAT1 mRNA expression decreased obviously after siRNA interference.Compared with pre-transfection,proliferation,migration and invasion of colon cancer cells have been significantly inhibited (P < 0.05).Conclusion ACAT1 gene interference reduced proliferation,migration and of invasion of HT29 cells,which provide a new potential target for colon cancer treatment.
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A 56-year-old man was diagnosed with cancer of the ascending colon along with retroperitoneal lymph node and peritoneal metastases. After six cycles of palliative chemotherapy, he presented with acute-onset jaundice. Imaging examinations did not show abnormal liver findings other than a periportal linear hypoattenuating area, and endoscopic retrograde cholangiography revealed a tight stricture of the proximal common bile duct. Total bilirubin continued to increase after endoscopic sphincterotomy and biliary stent insertion. Blind liver biopsy revealed tumor infiltration along liver lymphatics, but ruled out tumor involvement of hepatic parenchyma and sinusoids. Tumor cells were predominantly confined to within the lymphatic vessels and were not observed in the arteries or veins. Although one loading dose of cetuximab and two fractions of palliative radiotherapy were administered, the patient succumbed to acute liver injury 30 days after the development of jaundice.
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Humanos , Pessoa de Meia-Idade , Artérias , Bilirrubina , Biópsia , Cetuximab , Colangiografia , Colo , Colo Ascendente , Neoplasias do Colo , Ducto Colédoco , Constrição Patológica , Tratamento Farmacológico , Icterícia , Fígado , Linfonodos , Metástase Linfática , Vasos Linfáticos , Metástase Neoplásica , Radioterapia , Esfinterotomia Endoscópica , Stents , VeiasRESUMO
Diverse somatic mutations have been reported to serve as cancer drivers. Recently, it has also been reported that epigenetic regulation is closely related to cancer development. However, the effect of epigenetic changes on cancer is still elusive. In this study, we analyzed DNA methylation data on colon cancer taken from The Caner Genome Atlas. We found that several promoters were significantly hypermethylated in colon cancer patients. Through clustering analysis of differentially methylated DNA regions, we were able to define subgroups of patients and observed clinical features associated with each subgroup. In addition, we analyzed the functional ontology of aberrantly methylated genes and identified the G-protein-coupled receptor signaling pathway as one of the major pathways affected epigenetically. In conclusion, our analysis shows the possibility of characterizing the clinical features of colon cancer subgroups based on DNA methylation patterns and provides lists of important genes and pathways possibly involved in colon cancer development.
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Humanos , Classificação , Colo , Neoplasias do Colo , Ilhas de CpG , DNA , Metilação de DNA , Epigenômica , Genoma , MetilaçãoRESUMO
Objective To detect the expression of kisspeptin-1 (KISS-1),matrix metallopmteinase-2 (MMP-2) and vascular endothelial growth factor (VEGF) in the tissue of colon cancer,and analyze the relativity between KISS-1,MMP-2,VEGF and pathological characteristics of colon cancer.Methods A total of 60 colon cancer patients and 60 patients with benign colorectal disease who received surgical treatment in our hospital from January 2009 to June 2010 were selected as observation group and control group respectively.The cancer tissue samples and excision samples collected from them were used to detect KISS-1,MMP-2 and VEGF with immunohistochemistry.Results The positive rates of KISS-l,MMP-2 and VEGF were 31.7%,58.3% and 78.3% in observation group,and 73.3%,16.7% and 33.3% in control group.The positive rate of KISS-1 in observation group was lower than that in control group (x2=23.489,P<0.001),and the positive rates of MMP-2 and VEGF in observation group were higher than those in control group (x2=27.469,P< 0.001;x2=25.817,P<0.001).The expressions of KISS-1,MMP-2 and VEGF were significantly related with the histological grade and TNM stage of colon cancer (x2=8.997,P=0.011;x2=6.163,P=0.013;x2=8.519,P=0.014;x2=9.160,P=0.002;x2=16.577,P<0.001;x2=10.523,P=0.001).Conclusion It is helpful to understand the differentiation and clinical stage of colon cancer and provide evidence for clinical diagnosis and prognosis prediction by detecting KISS-1,MMP-2 and VEGE
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Purpose To investigate the expression of OTUB1 in colon cancer and the relationship between its expression and some clinicopathologic parameters. Methods Quantitative real-time PCR and immunohistochemical SP method were carried out in selected colon cancer and normal mucosa tissues. Results OTUB1 mRNA in colon cancer was 3. 5-fold higher than the normal mucosa. The expression of OTUB1 protein in the colon cancer was significantly higher than normal mucosa (P<0. 05). Moreover, its expression in normal tissues, adenoma and colon cancer showed a gradually increasing trend (P<0. 05). The higher expression of OTUB1 in colon cancer was related with tumor size, differentiation and lymph node metastasis. Conclusions OTUB1 may play an important role in co-lon cancer development.
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Objective To compare the clinical efficiency between laparoscopic and open complete mesocolic excision for right-sided colon cancer.Methods Between January 2011 and August 2012,a total of 134 patients with right-sided colon cancer who underwent CME at Fuzhou General Hospital of Nanjing Military Command were divided into laparoscopic (71) and open (63) groups.The intraoperative parameters,pathology,postoperative course and short-term outcomes were compared between groups.The chi-test and the student t test were used for statistics.Result There were no significant differences in the length of distal (P=0.427) and proximal margin (P=0.515),tumor diameter (P =0.440) and number of lymph nodes dissected (P =0.377).Postoperatively patients were followed for up to 12 months,no significant differences were found in local regional recurrence rates (4.2% vs 1.6%) (P =0.622) and distal metastasis rates (5.6% vs 3.2%) (P =0.684) between the two groups.The mean operative time (P =0.134) and postoperative complication rate (P =0.977) were similar.The mean intraoperative blood loss was less (P =0.000),bowel flatus passed earlier (P =0.000) and hospital stay shorter (P =0.000) in laparoscopic than that in open group.Conclusions Laparoscopic CME has the same oncologic clearance effects and short-term follow-up result compared with open CME for right-sided colon cancer,and laparoscopic CME is minimally invasive,less bleeding,less pain and quick recovery.
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Objective:To investigate the safety and effect of complete mesocolie excision (CME) combined with arterial infusion chemotherapy (AIC) and intra-peritoneal interstitial sustained-release chemotherapy (IPISRC). Methods:A total of 104 patients were classified under the experimental group and underwent CME combined with AIC and IPISRC. The other 98 patients were classified un-der the control group and only received radical surgery. Pre-and post-operative blood routine examinations, as well as liver and kidney function tests, were conducted for both groups. Post-operative adverse reactions and incidence of complications were recorded. Cancer and para-neoplastic tissues were sampled in experimental group. The post-surgery 5-fluorouracil (5-FU) concentration in the drainage fluid as well as those in the peripheral blood , were determined. Three-year follow-ups were conducted, during which the local recur-rence rate, liver metastasis, progression-free survival rate, and total survival rate were recorded. Results: No significant differences were found in the white blood cell count, hemoglobin count, liver and renal functions of the patients before and after the surgery, and rate of adverse reaction and complications between the two groups after surgery (P>0.05). In experimental group , the 5-FU concentra-tion was significantly higher in the cancer tissues than in the para-neoplastic tissues . The 5-FU concentration in experimental group was also significantly higher in the intra-peritoneal drainage liquid and reached its peak in the peripheral blood on day 3 post-surgery . Local recurrence and liver metastasis rates were significantly lower in experimental group than those in control group, whereas the pro-gression-free and three-year overall survival rates were significantly higher in experimental group than in control group (P<0.05). Con-clusion:The tharepy of pations of experimental goup is safe and effective. This method significantly improves the progression-free and three-year survival rates of the patients as well as significantly reduces the local recurrence and liver metastasis rates of colon cancer.
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PURPOSE: Adjuvant chemotherapy is currently recommended for Stage IIIA colon cancers. This study aimed to elucidate the oncologic outcomes of Stage IIIA colon cancer according to the chemotherapeutic regimen based on a retrospective review. METHODS: From 1995 to 2008, Stage IIIA colon cancer patients were identified from a prospectively maintained database at a single institution. Exclusion criteria were as follows: rectal cancer, another malignancy other than colon cancer, no adjuvant chemotherapy and unknown chemotherapeutic regimen. One hundred thirty-one patients were enrolled in the study, and the clinicopathologic and the oncologic characteristics were analyzed. The number of males was 72, and the number of females was 59; the mean age was 59.5 years (range, 25 to 76 years), and the median follow-up period was 33 months (range, 2 to 127 months). RESULTS: Of the 131 patients, fluorouracil/leucovorin (FL)/capecitabine chemotherapy was performed in 109 patients, and FOLFOX chemotherapy was performed in 22 patients. When the patients who received FL/capecitabine chemotherapy and the patients who received FOLFOX chemotherapy were compared, there was no significant difference in the clinicopathologic factors between the two groups. The 5-year overall survival and the 5-year disease-free survival were 97.2% and 94.5% in the FL/capecitabine patient group and 95.5% and 90.9% in the FOLFOX patient group, respectively, and no statistically significant differences were noted between the two groups. CONCLUSION: Stage IIIA colon cancer showed good oncologic outcomes, and the chemotherapeutic regimen did not seem to affect the oncologic outcome.
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Feminino , Humanos , Masculino , Quimioterapia Adjuvante , Colo , Neoplasias do Colo , Intervalo Livre de Doença , Seguimentos , Prognóstico , Estudos Prospectivos , Neoplasias Retais , Estudos RetrospectivosRESUMO
A neoplasia no sítio da colostomia associada ao megacólon chagásico é uma entidade rara. Os autores relatam caso de um paciente com lesão avançada, o qual foi submetido a tratamento cirúrgico e discutem aspectos relacionados a esta afecção.
Neoplasia at the site of the colostomy associated with chagasic megacolon is a rare clinical event. Here, the authors report the case of a patient with advanced lesion, who had to undergo surgical treatment, and discuss aspects related to this disease.
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Humanos , Masculino , Idoso , Doença de Chagas , Neoplasias do Colo , Colostomia , Megacolo , Laparotomia , Fatores de RiscoRESUMO
PURPOSE: Laparoscopic colectomy has clinical benefits such as short hospital stay, less postoperative pain, and early return of bowel function. However, objective evidence of its immunologic and oncologic benefits is scarce. We compared functional recovery after open versus laparoscopic sigmoidectomy and investigated the effect of open versus laparoscopic surgery on acute inflammation as well as tumor stimulation. MATERIALS AND METHODS: A total of 57 patients who were diagnosed with sigmoid colon cancer were randomized for elective conventional or laparoscopically assisted sigmoidectomy. Serum samples were obtained preoperatively and on postoperative day 1. C-reactive protein (CRP) and interleukin-6 (IL-6) were measured as inflammation markers, and vascular endothelial growth factor (VEGF) and insulin-like growth factor binding protein-3 (IGFBP-3) were used as tumor stimulation factors. Clinical parameters and serum markers were compared. RESULTS: Postoperative hospital stay (p=0.031), the first day of gas out (p=0.016), and the first day of soft diet (p<0.001) were significantly shorter for the laparoscopic surgery group than the open surgery group. The levels of CRP, IL-6, and VEGF rose significantly, and the concentration of IGFBP-3 fell significantly after both open and laparoscopic surgery. However, there were no significant differences in the preoperative and postoperative levels of CRP, IL-6, VEGF, and IGFBP-3 between the two groups. CONCLUSION: Our data suggest that both open and laparoscopic surgeries are accompanied by significant changes in IL-6, CRP, IGFBP-3, and VEGF levels. Acute inflammation markers and tumor stimulating factors may not reflect clinical benefits of laparoscopic surgery.
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Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Biomarcadores/sangue , Proteína C-Reativa/metabolismo , Colectomia/efeitos adversos , Inflamação/etiologia , Proteína 3 de Ligação a Fator de Crescimento Semelhante à Insulina/sangue , Interleucina-6/sangue , Laparoscopia/efeitos adversos , Período Pós-Operatório , Neoplasias do Colo Sigmoide/cirurgia , Resultado do Tratamento , Fator A de Crescimento do Endotélio Vascular/sangueRESUMO
PURPOSE: Physicians and oncology nurses must continue to update their knowledge on treatment and treatment-related side effects, while searching for effective methods to prevent or manage side effects. The objective of our study was to describe the incidence and response to treatment of the hand-foot syndrome (HFS) and the compliance with treatment of patients with stage IIB, IIIA, IIIB, and IIIC colon cancer that were treated with capecitabine alone as adjuvant therapy. MATERIALS AND METHODS: Between September 2005 and September 2006, 84 patients fulfilled the inclusion criteria and were included in this retrospective analysis of prospectively collected data. RESULTS: The treatment compliance rate was 90.5% (76 out of the 84 patients). The HFS developed in 65 patients (77.4%). Thirty-three patients (50.7%) had grade 1 HFS, 22 patients (33.8%) had grade 2 HFS and 10 patients (15.5%) had grade 3 HFS, as their most severe episode. For Grade 1 patients, the dose was maintained, and skin barrier cream and moist exposed burn ointment (MEBO) were applied. For Grade 2 patients, either the dose was maintained or 25% of the dose was reduced; MEBO and supportive care were provided. For Grade 3 patients, one cycle of chemotherapy was interrupted followed by dose adjustment; MEBO and supportive care were provided. CONCLUSIONS: HFS is manageable if both patients and oncology care teams are educated about HFS associated with capecitabine. The HFS is treated by patient education, preventive management, ointment application, conservative management, dose reduction, and interruption of chemotherapy administration.
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Adulto , Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Antimetabólitos Antineoplásicos/efeitos adversos , Quimioterapia Adjuvante/efeitos adversos , Neoplasias do Colo/tratamento farmacológico , Desoxicitidina/efeitos adversos , Fluoruracila/efeitos adversos , Dermatoses do Pé/induzido quimicamente , Dermatoses da Mão/induzido quimicamente , Estudos Retrospectivos , SíndromeRESUMO
AIM: To investigate the effect of 5 - fluorouracil ( 5 - FU ) on the expression of the stem cell marker CD133 on colon cancer stem cells. METHODS:CD133 expression on several colon cancer cell lines was detected by flow cytometry. The CD133 positive cells from DLD1 cells were separated by the method of magnetic activated cell separation. Colony assay was used to measure self - renew ability and MTS assay was used to detect the sensitivity to 5 - FU after separation. After 5 - FU treatment, the change of CD133 mRNA level was measured by qPCR. RESULTS: CD133 expression on the surface of colon cacner cell lines DLD1, HT29, SW480, HCT116, Lovo, RKO was 30.20% , 82.00% , 0.34% , 91.80% , 85.30% , 0.28% respectively. DLD1 cells had two obvious populations according to CD133 expression. CD133 positive cells were separated from DLD1 cells, the positive purity was 87.21% ±5.33% and the negative purity was 84.30% ±4.65%. CD133 positive cells formed more colonies with limited dilution colony assay (46.33% ±4.44% vs 31.00% ±2.00% , P <0.05). CD133 positive cells were less sensitive to 5 - FU compared to CD133 negative cells(20% less, P <0.01). 5 - FU at concentration of 1 mg/L upregulated CD133 mRNA expression in both DLD1 and HT29 cells, the relative quantity was increased from 1 to 1.684 ±0.012(P <0.01 )and 30.702 ±0.280 to 49.379 ±0.460(P <0.01) in HT29 and DLD1, respectively. CONCLUSION: Compared to CD133 negative cells, CD133 positive cells show more ability to form colonies in vitro, and are less sensitive to 5 - FU. 5 - FU upregulats the mRNA expression of CD133, resulting in the CD133 colon cancer stem cells enrichment during 5 - FU treatment.
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Objective: We wanted to evaluate usefulness of uncovered stent in comparison with covered stent for the palliative treatment of malignant colorectal obstruction. Materials and Methods: Covered (n = 52, type 1 and type 2) and uncovered (n = 22, type 3) stents were placed in 74 patients with malignant colorectal obstruction. Stent insertion was performed for palliative treatment in 37 patients (covered stent: n = 23 and uncovered stent: n = 14). In the palliative group, the data on the success of the procedure, the stent patency and the complications between the two groups (covered versus uncovered stents) were compared. Results: The technical success rate was 89% (33/37). Symptomatic improvement was achieved in 86% (18/21) of the covered stent group and in 92% (11/12) of the uncovered stent group patients. The period of follow-up ranged from three to 319 days (mean period: 116+/-85 days). The mean period of stent patency was 157+/-33 days in the covered stent group and 165+/-25 days in the uncovered stent group. In the covered stent group, stent migration (n = 11), stent fracture (n = 2) and poor expansion of the stent (n = 2) were noted. In the uncovered stent group, tumor ingrowth into the stents (n = 3) was noted. Conclusion: Self-expanding metallic stents are effective for relieving malignant colorectal obstruction. The rate of complications is lower in the uncovered stent group than in the covered stent group.
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Pessoa de Meia-Idade , Masculino , Humanos , Feminino , Idoso de 80 Anos ou mais , Idoso , Adulto , Resultado do Tratamento , Tomografia Computadorizada por Raios X , Stents , Radiografia Intervencionista , Cuidados Paliativos , Obstrução Intestinal/etiologia , Desenho de Equipamento , Neoplasias Colorretais/complicaçõesRESUMO
OBJECTIVE: To investigate the diagnostic value of CT colonography for the detection of colorectal polyps. MATERIALS AND METHODS: From December 2004 to December 2005, 399 patients underwent CT colonography and follow-up conventional colonoscopy. We excluded cases of advanced colorectal cancer. We retrospectively analyzed the CT colonography findings and follow-up conventional colonoscopy findings of 113 patients who had polyps more than 6 mm in diameter. Radiologists using 3D and 2D computer generated displays interpreted the CT colonography images. The colonoscopists were aware of the CT colonography findings before the procedure. RESULTS: CT colonography detected 132 polyps in 107 of the 113 patients and conventional colonoscopy detected 114 colorectal polyps more than 6 mm in diameter in 87 of the 113 patients. The sensitivity of CT colonography analyzed per polyp was 91% (41/45) for polyps more than 10 mm in diameter and 89% (101/114) for polyps more than 6 mm in diameter. Thirteen polyps were missed by CT colonography and were detected on follow-up conventional colonoscopy. CONCLUSION: CT colonography is a sensitive diagnostic tool for the detection of colorectal polyps and adequate bowel preparation, optimal bowel distention and clinical experience are needed to reduce the rate of missing appropriate lesions.
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Adulto , Idoso , Idoso de 80 Anos ou mais , Humanos , Pessoa de Meia-Idade , Pólipos do Colo/diagnóstico , Colonografia Tomográfica Computadorizada/métodos , Colonoscopia/métodos , Neoplasias Colorretais/diagnóstico , Meios de Contraste/administração & dosagem , Reações Falso-Negativas , Reações Falso-Positivas , Seguimentos , Processamento de Imagem Assistida por Computador , Imageamento Tridimensional , Iohexol/análogos & derivados , Variações Dependentes do Observador , Valor Preditivo dos Testes , Intensificação de Imagem Radiográfica/métodos , Estudos Retrospectivos , Sensibilidade e EspecificidadeRESUMO
Isolated splenic metastases from colon cancer has been rarely reported in English literatures. Furthermore synchronous isolated splenic metastasis is very rare. We report a 63-year-old man with synchronous isolated splenic meta-stasis from colon cancer. He was suspicious to ascending colon cancer with isolated splenic metastasis by colono-fiberoscope, abdominal CT, fusion PET scan and elevated CEA level. He underwent right hemicolectomy and splenectomy. Histologic examinations revealed colonic adeno-carcinoma with splenic metastasis. He was discharged uneventfully and was planned to take chemotherapy. Although it appears to be rare, splenic mass with colon cancer patient should be evaluated to rule out metastasis and splenectomy for isolated splenic metastasis from colon cancer is warranted.
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Humanos , Pessoa de Meia-Idade , Colo , Colo Ascendente , Neoplasias do Colo , Tratamento Farmacológico , Metástase Neoplásica , Tomografia por Emissão de Pósitrons , Esplenectomia , Neoplasias Esplênicas , Tomografia Computadorizada por Raios XRESUMO
Objective To investigate the in vitro effect of wild-type PTEN gene transfection on the growth of human colon cancer cell lines. Methods With liposome transduction technique,the retrovirus vector pBp-PTEN,which contains wild-type PTEN gene segment and pBabe-puro,was transfected into Lovo,one of the PTEN-deficient human colorectal carcinoma cell lines.After identification by Western blotting,cell growth,cell cycle and apoptosis before and after transfection were studied. Results It was indicated by the cell growth curve that after transfection the curve of the transfection group exhibited a mild tendency with no obvious logarithmic growth phase,and the growth velocity was significantly lower than that of the control group(P