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Survival effect of probiotics in a rat model of colorectal cancer treated with capecitabine

World Journal of Gastrointestinal Oncology 2021年第10期13卷 1518-1531页

作者： Graciela Gigola Pedro Carriere María Belén Novoa Díaz Gabriela Perdigon ariel osvald. zwenger Claudia Gentili Biología Bioquímica y FarmaciaUniversidad Nacional del Sur(UNS)-INBIOSUR(CONICET-UNS)Bahía Blanca 8000Buenos Aires ProvinciaArgentina San Miguel de Tucumán 4000Argentina Centro de Estudios Clínicos SAGA CEC SAGASantiago de Chile 8320000Chile

BACKGROUND Probiotics are used to manage a number of gastrointestinal disorders due to their beneficial *** reports showed that probiotics also improve the life quality of patients with colorectal cancer(CRC)subjected to oncologic *** a CRC animal model,probiotics supplementation has the potential to decrease the formation of aberrant crypts and ameliorate tumor malignancy,enhancing the antitumor effect of 5-fluorouracil(5-FU)*** on these data,we hypothesize that the administration of probiotics impact positively in the overall survival and life quality of rats with CRC under the treatment of capecitabine,which is the pro drug of *** To evaluate the probiotics effects in a rat CRC model treated with capecitabine and followed until the end of *** 1,2-Dimethylhidrazine dihydrochloride(1,2-DMH)was employed as carcinogen inductor of *** male Wistar-Lewis rats were randomly assigned to one of five following groups:Control(n=5),Control+probiotics(Control-P group,n=5),1,2-DMH alone(DMH group,n=10),1,2-DMH+capecitabine(DMH-C group,n=10),1,2-DMH+probiotics(DMH-P group,n=10)and 1,2-DMH+capecitabine+probiotics(DMH-C-P group,n=10).All parametric data were expressed as the mean±*** statistical significance of differences was analyzed using one-way *** were analyzed with InfoStat *** results were considered statistically significant at P<*** survival was evaluated with the Kaplan-Meier estimator with the log-rank *** The data of mean overall survival for DMH,DMH-P,DMH-C,DMH-C-P,Control and Control-P groups were 250 d[95%confidence interval(CI):242.5-253.1],268 d(95%CI:246.3-271.4),380 d(95%CI:337.8-421.9),480 d(95%CI:436.9-530.7),588 d(95%CI:565.8-609.3)and 590 d(95%CI:564.3-612.9),respectively,with a significant difference between DMH-C and DMH-C-P groups(P=0.001).Comparing all groups by Kaplan-Meier estimator,we found a significantly different in the overall survival of DMH and DMH-

关键词： Colorectal cancer Capecitabine Probiotics Survival Life quality Animal experimentation

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Involvement of Met receptor pathway in aggressive behavior of colorectal cancer cells induced by parathyroid hormone-related peptide

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World Journal of Gastroenterology 2022年第26期28卷 3177-3200页

作者： María Belén Novoa Díaz Pedro Carriere Graciela Gigola ariel osvald. zwenger Natalia Calvo Claudia Gentili Departamento de Biología Bioquímica y FarmaciaUniversidad Nacional del Sur(UNS)-INBIOSUR(CONICET-UNS)Bahía Blanca 8000Buenos AiresArgentina Centro de Estudios Clínicos SAGA CEC SAGASantiago de Chile 8320000Chile

BACKGROUND Parathyroid hormone-related peptide(PTHrP)plays a key role in the development and progression of many *** found that in colorectal cancer(CRC)HCT116 cells,the binding of PTHrP to its receptor PTHR type 1(PTHR1)activates events associated with an aggressive *** HCT116 cell xenografts,PTHrP modulates the expression of molecular markers linked to tumor *** evidence suggests that the Met receptor is involved in the development and evolution of *** on these data,we hypothesized that the signaling pathway trigged by PTHrP could be involved in the transactivation of Met and consequently in the aggressive behavior of CRC *** To elucidate the relationship among PTHR1,PTHrP,and Met in CRC *** For in vitro assays,HCT116 and Caco-2 cells derived from human CRC were incubated in the absence or presence of PTHrP(1-34)(10-8 M).Where indicated,cells were pre-incubated with specific kinase inhibitors or dimethylsulfoxide,the vehicle of the *** protein levels were evaluated by Western blot ***-time polymerase chain reaction(RT-qPCR)was carried out to determine the changes in gene *** healing assay and morpho logical monitoring were performed to evaluate cell migration and changes related to the epithelialmesenchymal transition(EMT),*** number of viable HCT116 cells was counted by trypan blue dye exclusion test to evaluate the effects of irinotecan(CPT-11),oxaliplatin(OXA),or doxorubicin(DOXO)with or without *** in vivo tests,HCT116 cell xenografts on 6-wk-old male N:NIH(S)_nu mice received daily intratumoral injections of PTHrP(40μg/kg)in 100μL phosphate-buffered saline(PBS)or the vehicle(PBS)as a control during 20 *** slaughter was carried out and the tumors were removed,weighed,and fixed in a 4%formaldehyde solution for subsequent treatment by *** evaluate the expression of molecular markers in human tumor samples,we studied 23 specimens ob

关键词： PTHrP MET receptor tyrosine kinase Parathyroid hormone receptor type 1 Colorectal cancer Drug resistance

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