Objective To explore the effect of high fat diet on serum biochemical parameters and histopathology of main organs in Mongolian gerbils.Methods Forty-eight healthy adult male Mongolian gerbils were randomly and equally divided into model and normal groups.The gerbils in the model group were fed with high fat diet while the normal group with standard diet.Eight gerbils in each group were killed at the end of 4th,8th and 16th week,respectively,and the body weight, serum levels of Glu, TG, CHOL, HDL-C, LDL-C, UA, CREA, BUN, TBil, TP, ALB, ALT, AST and AMS were determined.The histopathological changes of main organs were observed.Results Compared with the normal group,the blood lipid of the model gerbils was significantly increased, the liver function was impaired, the blood uric acid level was higher, and the blood glucose was decreased at the end of 16th week.The AMS was increased at the end of 16th week,but the renal function showed no significant changes.The liver tissue of the model group gradually showed steatosis, inflammation, fibrosis and cirrhosis, accompanied by splenomegalia. The lung tissue and myocardium showed fatty degeneration and obvious damages in the later period,the pancreatic islets were enlarged and the amount of endocrine cells was increased,and the small intestine and kidney didn’ t show any distinct changes.Conclusions A gerbil models of hyperlipidemia and nonalcoholic steatohepatitis and cirrhosis can be well established by high fat diet feeding,and may serve as good models for research of hyperlipidemia-related hyperuricemia, and lung and myocardial damages.

BACKGROUND:Gastric cancer stem cels involved in the neoadjuvant chemotherapy and conventional treatment are closely associated with relapse of gastric cancer. However, this conclusion has not yet been confirmed.
OBJECTIVE:To investigate the effects of gastric cancer stem cels in tumor invasion and metastasis and its effect on angiogenesis ability.
METHODS:We prepared nude mouse models of gastric cancer to isolate and culture gastric cancer stem cels. Harvested gastric cancer stem cels were detected in cel scratch test, ring test, inhibition rate test, cel migration test and tumorigenicity test.
RESULTS AND CONCLUSION:After 7 days of culture, the cels exhibited adherent growth but a lack of regularity that most cels were in a tadpole shape. In the cel scratch test, the scratch width was significantly different at 0 and 24 hours (P < 0.05). Under an inverted microscope, the cels were found to form a ring in the ring test. The 50% inhibiting concentration of gastric cancer stem cels induced by oxaliplatin was significantly lower than that induced by 5-fluorouracil (P < 0.05). The number of cels passing through the basilar membrane was significantly increased after cel migration (P < 0.05). After implantation of gastric cancer stem cels, the gastric tissue quality was significantly higher than that in normal nude mice of gastric cancer (P < 0.05). These findings indicate that gastric cancer stem cels responsible for tumor invasion and migration have stronger angiogenesis ability.

ObjectiveToexplorethedynamicchangesofoxidativestressandcytokinesinMongoliangerbilswith nonalcoholic fatty liver disease ( NAFLD) and their significance.Methods Forty-eight healthy male gerbils were randomly divided into normal group and model group , 24 in each group .Gerbils of the model group were fed with high fat diet while those of the normal group with normal diet .Eight gerbils in each group were killed at the end of 4 w, 8 w and 16 w, respectively .MDA content and SOD , GSH-PX and T-AOC activity in the liver tissue were detected by chemical method, and serum TNF-α, INF-γand IL-10 levels were determined using liquid suspension chip .Results With the development of NAFLD , MDA content in liver increased gradually , and the MDA contents were all significantly higher than those of the normal group ( P<0.01 ); T-AOC level slightly increased , and then decreased , the levels at 4 w and 16 w were markedly decreased compared with those of the normal group (P<0.05);SOD level was significantly increased and then markedly reduced, the level of the model group at 4 w was significantly increased (P<0.05), while that at 8 w and 16 w were significantly decreased (P<0.05, P<0.01).The level of GSH-PX was decreased gradually , the levels at 8 w and 16 w were significantly lower than those of the normal group (P<0.05).With the progression of NAFLD,serum TNF-αand IFN-γwere increased gradually , while the level of IL-10 decreased gradually , and the levels at 8 w and 16 w were significantly lower than those of the normal group ( P <0.05, P <0.01).Conclusions The oxidative stress-related indicators and inflammatory cytokines in the gerbil NAFLD models induced by high fat diet are significantly changed as simple fatty liver develops into steatohepatitis , liver fibrosis and cirrhosis , and participate in the development and progression of NAFLD .

Fujian Province is one of the provinces with relatively high incidence of digestive sys-tem tumors,the work of cancer prevention and control began in high-prevalence area in the late 1980s.In the past 30 years,Fujian Province has done a lot of work in the research of tumor etiology,cancer prevention and science popularization,screening and early diagnosis and treatment,and achieved some achievements in tumor prevention and control.The paper summarizes the general situation of cancer prevention and control institutions in Fujian Province,the improvement of can-cer registration system,the progress of main cancer screening,the achievement of prevention in high incidence areas,and prospects the future work.

[Purpose]To analyze the trends of incidence and mortality of gastric cancer in Changle District of Fuzhou City,Fujian Province during 1991-2020.[Methods]The incidence and mor-tality data of gastric cancer from 1991 to 2020 were collected from cancer registries in Changle District.The crude incidence/mortality rates and age-standardized incidence/mortality rates by Chi-nese standard population(ASIRC/ASMRC)of gastric cancer were calculated.The change trends of gastric cancer incidence and mortality were analyzed by the Joinpoint linear regression model,and the annual percentage change(APC)and the average annual percentage change(AAPC)were cal-culated.[Results]From 1991 to 2020,the crude incidence of gastric cancer in Changle District was 62.28/105,the ASIRC was 55.71/105,the ASIRC decreased from 100.94/105 in 1991 to 26.45/105 in 2020 with an AAPC of-4.34％(P＜0.01).The crude mortality rate of gastric cancer was 50.58/105,the ASMRC was 44.35/105,the ASMRC decreased from 93.07/105 in 1991 to 20.03/105 in 2020 with an AAPC of-4.71％(P＜0.01).From 1991 to 2020,the incidence of gastric cancer in Changle District decreased in age groups of 0～44,45～54,55～64,65～74 and older than 75 years old,with the most significant decrease in the 45～54 age group.The mortality decreased in age group of 0～44,45～54,55～64 and 65～74 with the most significant decrease in 45～54 age group;there was no significant change in 75 and above age group.From 1991 to 2020,the median age of gastric cancer onset and death was delayed by 7 years and 13 years,respectively.[Conclusion]The incidence and mortality of gastric cancer had been considerably decreased during 1991-2000,indicating the success of prevention and control in Changle District;but they are still at a high level,so further targeted prevention and control measures are needed.