Short chain fatty acids(SCFA) are produced in the large bowel of humans by anaerobic bacterial fermentation.The main fermentative substrates are undigested dietary carbohydrates,including nonstarch polysaccharides and resistant starch(RS).SCFA are major organic acids in the lumen of the large intestine.They are preferred energy source for colonocytes.Their effects include enhancement of electrolyte uptake,stimulation of colon epithelial cell proliferation and mucosa growth,modulation of colonic immune function,nutritional support and protection of colon mucosa.Butyric acid can suppress colon neoplasm cell proliferation,induce its apoptosis and differentiation,affect proto-onc genes expression,which suggest that butyrate may be an important agent in cancer treatment.

Intraductal papillary neoplasm of the bile duct (IPNB) is a variant of bile duct tumors characterized by papillary growth within the dilated bile duct lumen and secretion with a large amount of mucins.IPNB is an intraductal papillary cancer of the bile duct or a preinvasive lesion classified by the 2010 World Health Organization (WHO) classification.Although the specific etiology and pathogenesis are unclear,IPNB is known to two major risk factors:hepatoliathiasis and clonorchiasis.The clinical manifestations of IPNB include intermittent abdominal pain,acute cholangitis and obstructive jaundice.Results of laboratory test show abnormal liver function resulting from obstruction of bile duct,but it's not specific.The most common imaging findings for IPNB are bile duct dilatation and intraductal masses.Computed tomography,magnetic resonance image and cholangiography are usually performed to access tumor location and extension.According to morphology of the tumor epithelial cells,IPNB are classified into the pancreticbiliary,intestinal,gastric and oncocytic types.The surgical resection is a major treatment of IPNB.In principle,IPNB should be resected in a manner similar to that employed for other types of intrahepatic cholangiocarcinomas and extrabepatic bile duct carcinomas.The type of surgical procedure for IPNB depends upon tumor location and extension.Although several investigations have been conducted for illuminating molecular genetic changes during the development and progression of IPNB,the specific mechanism is still not clear,and further study is needed.

With the development of society and living condition,the incidences of fatty liver and other diseases like hypertension,cardiovascular disease and diabetes have increasd by several factors.This review discussed the cause,mechanism and therapy of fatty liver.The emphasis was put on the object and principle of nutritional therapy.Generally,the treatment of fatty liver includes control of the underlying causes,nutritional therapy,proper physical exercise,upbeat life-rhythm and a certain workload.Plasmapheresis and oxygen therapy are the new methods.

Adolescent ; Adult ; Aged ; Cholesteatoma, Middle Ear ; congenital ; pathology ; Female ; Humans ; Male ; Melanocytes ; Middle Aged ; Young Adult

Objective To investigate the effect of the teaching modes based on problem-based learning (PBL) and lecture-based learning (LBL) in clinical practice of hepatobiliary surgery.Methods 166 5-year program students were divided into 2 groups:PBL group (n=83)and LBL group (n=83).The performance in interrogation,physical examination,medical records and theoretical tests were analyzed.Results PBL group had better performance in all the above aspects compared to LBL group (P<0.05).Conclusions The teaching mode based on PBL is a good method,which Can inspire the students and improve their ability to solve problems in clinical practice of hepatobiliary surgery.

Objective To explore the association of-11377 site single nucleotide polymorphism in promoter region of adiponectin gene and carotid intima-media thickness(CIMT)in patients with type 2 diabetes mellitus.Methods The adiponectin gene-11377C→G polymorphism was identified by PCR-restriction fragment length polymorphism(RFLP)in 504 patients with type 2 diabetes mellitus(250 patients with increased CIMT and254 Datients with normal CIMT). Serum lipid and fasting plasma glucose were detected by full automatic biochemical analysor.fasting serum insulin(FINS) was measured by radioimmunoassay,and serum adiponectin level was assessed by ELISA.Results The frequencies of adiponectin gene-11377C→G genotype and allele were different between type 2 diabetic patients with normal and increased CIMT(P

the effect of maintaining integrity of epithelial cells by increasing occludin protein expression,and the effect is related with the up-regulation of occludin mRNA.

Objective To investigate the expression of integrin ?1 and ?1 and to study their role on cell apoptosis of placenta with pregnancy induced hypertension syndrome. Methods Immuno histochemistry was used for 40 placental samples with PIH and 43 normal placental samples to detect the expression of integrin ?1、?1; TDT mediated dUTP nick end labeling(Tune1) was used for 12 placental samples with PIH and 24 normal placental samples to examine apoptosis index in cytotrophoblast, syncytiotrophoblast and decidual cell. Results The apoptosis index in placental cytotrophoblast, syncytiotrophoblast and decidual cells in PIH group were (11.04 ? 3.46)%, (12.2 ? 3.67)%, (13.03 ? 4.38)% respectively and was significantly higher than of control group [(3.91 ? 1.65)%,(5.39 ? 1.76)%, (4.08 ? 1.97)%] ( P

Objective:To check RNA binding protein QKI-5's expression level in breast cancer cells and inhibiting effect on cancer cell proliferation.Methods:QKI-5's expression level was checked in different breast cancer cells by Western blotting,cancer cells of overexpressed QKI-5 gene could be stabilized by slow virus infection construction,MTT and FCM were used to check cell period to express QKI-5's influence on cell proliferation and period.Results:MCF-7 cells have relatively low QKI-5 expression level in three breast cancer cells,MTT experiment result has obvious reduced influence on QKI-5's expression of MCF-7 cell proliferation P＜0.05,mean-while,cell period inspection shows that overexpressed QKI-5's MCF-7 cells have obvious G1 retardant,cells in S and G2/M periods are reduced.Conclusion:High expression of QKI-5'in breast cancer could cause slow cell proliferation by inhibiting cancer cell period,hence causing limited tumor growth.

Objective: To construct eukaryotic expression vector of tumor-associated gene SNC90 and transfect it into human colorectal cancer cell lines. Methods: A 1.5 kb tumor-associate gene SNC90 full length cDNA was inserted into a mammalian expression vector pREP9 to make recombinant vector pREP9-SNC90, which was then introduced into three kinds of colorectal cancer cell lines, SW1116, COL0205 and SW620, by lipofection or electroporation. The cells resistant to G418 drug were selected. Results: Cells transfected with pREP9-SNC90 showed fewer G418-resistant colonies than those transfected with void vector, the inhibitory rates are 72.2%, 74.2% and 59.7%, respectively. Conclusion : SNC90 may play a negative role in regulating growth of colorectal cancer cell.