| 7 | The Antitumor Effect of Rhamnetin on the Heart显示文摘Rhamnetin has a wide usageduetoits anti-inflammatory,anti-carcinogenicand anti-oxidantproperties.In this study,the effects of different doses of Rhamnetin on ascitetumor were investigated in the Ehrlich Assit Tumor(EAT)model originating from mouse breast adenocarcinoma and developed in Balb/c mice.Inthisstudy 10Balb/c mice were used each group,six of them were in stock animals and the others were in ascitestumor groups.EAT cells(1×10^(6) EAT cells)taken from all stock mice were injected intraperitoneally.200μg/kg rhamnetin was administered intraperitoneally to the treatment groups of animals with ascites tumor for 10 days.At theend of the experiment,the animals were decapitated and the hearts of the animals were removed and determined orhistological evaluation.The histological results of hearttissues of ascitestumor-induced animals were observed to be less in the 200μg/kg rhamnetin treated group compared to the tumor control group than EAT cells(p<0.05).It has beenshown in our study that rhamnetin has antitumoral effect on ascitetumor development with EAT cells. | Seher YILMAZ Züleyha DOĞANYİĞİT Adem TOKPINAR Özlem BOZKURT AslıOKAN OFLAMAZ Rabia KURT TOKPINAR ŞükrüATEŞ | 2021 | Journal of US-China Medical Science2021，18，3： | 0 |
| 8 | Exosomal glypican-1 is elevated in pancreatic cancer precursors and can signal genetic predisposition in the absence of endoscopic ultrasound abnormalities显示文摘BACKGROUND Individuals within specific risk groups for pancreatic ductal adenocarcinoma(PDAC)[mucinous cystic lesions(MCLs),hereditary risk(HR),and new-late onset diabetes mellitus(NLOD)]represent an opportunity for early cancer detection.Endoscopic ultrasound(EUS)is a premium image modality for PDAC screening and precursor lesion characterization.While no specific biomarker is currently clinically available for this purpose,glypican-1(GPC1)is overexpressed in the circulating exosomes(crExos)of patients with PDAC compared with healthy subjects or those harboring benign pancreatic diseases.AIM To evaluate the capacity of GPC1+crExos to identify individuals at higher risk within these specific groups,all characterized by EUS.METHODS This cross-sectional study with a prospective unicentric cohort included 88 subjects:40 patients with MCL,20 individuals with HR,and 20 patients with NLOD.A control group(CG)was submitted to EUS for other reasons than pancreatic pathology,with normal pancreas and absence of hereditary risk factors(n=8).The inclusion period was between October 2016 and January 2019,and the study was approved by the Ethics Committee of Centro Hospitalar Universitário de São João,Porto,Portugal.All patients provided written informed consent.EUS and blood tests for quantification of GPC1+crExos by flow cytometry and carbohydrate antigen 19-9(CA 19-9)levels by ELISA were performed in all subjects.EUS-guided tissue acquisition was done whenever necessary.For statistical analysis,SPSS®27.0(IBM Corp.,Armonk,NY,United States)version was used.All graphs were created using GraphPad Prism 7.00(GraphPad Software,San Diego,CA,United States).RESULTS Half of MCLs harbored worrisome features(WF)or high-risk stigmata(HRS).Pancreatic abnormalities were detected by EUS in 10.0%and 35.0%in HR and NLOD individuals,respectively,all considered non-malignant and“harmless.”Median levels of GPC1+crExos were statistically different:MCL[99.4%,interquartile range(IQR):94.9%-99.8%],HR(82.0%,IQR:28.9%-98.2%),NLOD(12.6%,IQR:5.2%-63.4%),and CG(16.2%,IQR:6.6%-20.1%)(P<0.0001).Median levels of CA 19-9 were within the normal range in all groups(standard clinical cut-off of 37 U/mL).Within HR,individuals with a positive history of cancer had higher median levels of GPC1+crExos(97.9%;IQR:61.7%-99.5%),compared to those without(59.7%;IQR:26.3%-96.4%),despite no statistical significance(P=0.21).Pancreatic cysts with WF/HRS were statistically associated with higher median levels of GPC1+crExos(99.6%;IQR:97.6%-99.8%)compared to those without(96.5%;IQR:81.3%-99.5%)(P=0.011),presenting an area under the receiver operating characteristic curve value of 0.723(sensitivity 75.0%and specificity 67.7%,using a cutoff of 98.5%;P=0.012).CONCLUSION GPC1+crExos may act as biomarker to support the diagnosis and stratification of PDAC precursor lesions,and in signaling individuals with genetic predisposition in the absence of EUS abnormalities. | Pedro Moutinho-Ribeiro Ines A Batista Sofia T Quintas Bárbara Adem Marco Silva Rui Morais Armando Peixoto Rosa Coelho Pedro Costa-Moreira Renato Medas Susana Lopes Filipe Vilas-Boas Manuela Baptista Diogo Dias-Silva Ana L Esteves Filipa Martins Joanne Lopes Helena Barroca Fátima Carneiro Guilherme Macedo Sonia A Melo | 2022 | World Journal of Gastroenterology2022，28，31： | 0 |
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