Ginseng root saponins ( GRS ) was extracted from native ginseng.The dosage used was calculated according to the content of saponins.Immunosuppression in mice was induced in 15 days after implar- ting Ehrlich ascites carcinoma (EAC) subcutaneously in armpit, and in 5-11 days after implanting EAC into peritoneal cavity. GRS administered orally 50mg/kg- for 8 days did not prevent the atrophy of the thymus in tumor-bearing mice but rather aggravated it. GRS administered orally 50mg/kg for 14 days partially restored the suppressed phagocytosis of peritoneal macrophages in tumor-bearing mice. GRS administered orally 50mg/kg for 6 days somewhat restored the suppression of hemolysin formation in tumor-bearing mice 5 days after implanting EAC, But GRS given in the same route and dosage for 9 days, showed no effect on the suppression of hemolysin formation. GRS administered orally 50mg/kg for 10 days partially restored the suppression of delayed hypersensitive reaction in tumor-bearing mice.

Objective To evaluate the function of regulatory T (Treg)cells in peripheral blood from patients with psoriasis, and to explore the possible role of the STAT3 signaling pathway in Treg cell dysfunction. Methods Totally, 81 patients with psoriasis vulgaris, who all presented with chronic plaques and had a psoriasis area and severity index (PASI)score of 10 - 30, were enrolled into this study. Forty-six healthy blood donors served as the control group. Venous blood samples were collected from these subjects followed by isolation of Treg cells and responder T (Tresp)cells. Flow cytometry was performed to determine the proportion of Treg cells in peripheral blood as well as that of cells secreting phosphorylated-STAT3(p-STAT3), interferon γ(IFN-γ), tumor necrosis factor α(TNF-α)and interleukin 17(IL-17)in Treg cells, and quantitative real-time PCR (qRT-PCR)to measure the expression levels of IFN-γ, TNF-α and IL-17 mRNAs in Treg cells. Some Treg cells and Tresp cells were cultured in vitro alone or in combination, and flow cytometry was conducted to estimate cellular proliferative activity on day 7 after stimulation with IL-2. Some patient-derived Treg cells were classified into several groups to be cultured alone or in combination with Tresp cells with or without the presence of the STAT3 pathway inhibitor, Stattic V (10 or 50 μg/L), for 7 days. Subsequently, flow cytometry was performed to evaluate the proliferative activity of Tresp cells, and qRT-PCR to measure the expression levels of IFN-γ, TNF-α and IL-17 mRNAs in Treg cells. Results No significant differences were observed in the proportion of Treg cells in peripheral blood between the patient group and control group (6.437% ± 0.186% vs. 6.812% ± 0.241%, t = 1.224, P >0.05). Compared with control-derived Treg cells, the patient-derived Treg cells showed significantly decreased proliferative activity and inhibitory effects on Tresp cells, but increased proportion of cells secreting p-STAT3, IFN-γ, TNF-α and IL-17 (all P < 0.05). After the treatment with 50 μg/L Stattic V, a significant increase was observed in the inhibitory effect of patient-derived Treg cells on Tresp cells (inhibition rate: 61.670% ± 4.640% vs. 28.820% ± 11.490%, P < 0.05), but a significant decrease in the mRNA expressions of IFN-γ (2-△△C t: 1.654 ± 0.879 vs. 23.350 ± 6.721, P <0.05), TNF-α(0.850 ± 0.705 vs. 4.847 ± 1.525, P < 0.05)and IL-17(0.572 ± 0.135 vs. 3.095 ± 0.650, all P < 0.05)in patient-derived Treg cells compared with untreated patient-derived Treg cells. Conclusions The negative regulatory effect of Treg cells on Tresp cells is decreased in patients with psoriasis, which may be associated with abnormal activation of the STAT3 signaling pathway, and inhibition of the pathway may restore the function of Treg cells to a certain extent.

Objective To observe the effects ofLiuwei Dihuang Decoction on cAMP and PDE3B in adipose tissues of rats with type 2 diabetes;To explore its mechanism.MethodsTotally 80 SD rats were randomly divided into two groups:control group and molding group. Rats in the molding group established the type 2 diabetic models by feeding high sugar and fat diet combined with intraperitoneal injection of Streptozotocin. The successful modeling rats were divided into model group, Rosiglitazone group, andLiuwei Dihuang Decoction group. Administration groups were given relevant medicine for gavage, while model group and blank group were given the same amount of normal saline for 30 days. FBG levels were detected, and cAMP and INS levels were detected by ELISA. The protein expressions of PDE3B in adipose tissues were determined by Western blot. The mRNA expressions of PDE3B in adipose tissues were detected by RT-PCR.Results Compared with the model group, the FBG and INS levels in type 2 diabetic rats were reduced in Rosiglitazone group andLiuwei DihuangDecoction group (P<0.05,P<0.01). InLiuwei Dihuang Decoction group, the protein and mRNA expressions of PDE3B in the adipose tissues were higher, and cAMP levels were lower than the model group (P<0.01).ConclusionLiuwei Dihuang Decoction can increase PDE3B expression, and decrease cAMP level, which may be one of the mechanisms for improving insulin resistance in type 2 diabetic rats.

Objective: To investigate the health status of radiation workers in a city and provide evidence for the health management of radiation workers. Methods: To investigate the health status of radiation workers in a city and provide evidence for the health management of radiation workers. Results: The majority of radiation workers are engaged in diagnostic radiology, male is more than female. The abnormal rate of micronuclear (0.59‰) and chromosome aberration (0.47%) was highest in nuclear medicine workers. The abnormal rate of micronuclear and chromosome aberration was similar with interventional and diagnostic radiology. Expect for micronuclear (χ²=32.945, P<0.01) and chromosome aberration (χ²=75149.737, P<0.01) , other radiation sensitive indicators have no difference. The abnormal rate of thyroid function (18.8%) (χ²=12.084, P<0.01) , micronuclear (0.25‰) (χ²=57.359, P<0.01) , chromosome aberration (0.08%) (χ²=17.209, P<0.01) in group whose service length exceeding 20 years was higher than other service length groups. There is no statistical difference in other radiation sensitive indicators among different service length group. Conclusion Long-term low doses of ionizing radiation could affect radiation worker's health, expecially radiation workers engaged in nuclear medicine and radiotherapy. We must pay attention to occupaitonal health care and management to ensure radiation worker's health.

Objective:To observe the effects of lifestyle intervention on diet, physical activities and health outcomes in obese children and adolescents during one year of follow up.Methods:A total of 153 obese children and adolescents with body mass index more than 95th percentage of the same age and sex were recruited consecutively from June 2015 to June 2017 in our hospital whose parents had signed the informed consent forms. The children were followed-up once every three months and their diet and physical activities, anthropometric measurement and metabolic indicators were assessed on research scheme, which lasted for one year.Results:A total of 52 obese children completed four visits plan in 12 months (34.0%, one year group), 101 children (66.0%) dropped from 3 to 9 months (66.0%, less than one year group). The intake of total energy [(8 524.5±2 068.6)kJ vs (6 464.0±1 586.9)kJ, P<0.05], dietary protein [(75.5±20.7)g vs (64.2±16.8)g, P<0.05], fat [(79.0±18.8)g vs (60.3±14.2)g, P<0.05], carbohydrates [(257.1±83.6)g vs (188.9±63.8)g, P<0.05] decreased after one year intervention in one year group. Moreover, the numbers of physical activity of medium to high intensity increased in obese children (0 vs 32.7%, P<0.05). BMI-SDS [(3.15±0.85) vs (2.46±0.81), P<0.05], WHtR [(0.60±0.04) vs (0.56±0.06), P<0.05] and FM% [(39.9±5.4) vs (33.0±7.4), P<0.05] were reduced, while SMM% [(32.1±3.2) vs (36.0±4.3), P<0.05] increased significantly in one year group. The detection rate of insulin resistance, dyslipidemia and nonalcoholic fatty liver disease (NAFLD) were reduced in one year group at the end of follow up ( P<0.05). The decrease of body fat and the increase of skeletal muscle were more obvious in one-year follow up group( P<0.05). Conclusion:Children and adolescent have less energy intake, more physical activities, good clinical outcomes and less complications of obesity through lifestyle intervention and follow up for one year, so it is worthy of being promoted.

Objective To explore the utility of different endoscopic retrograde cholangiopancreatography(ERCP)complexity scales in the training of endoscopists.Methods Clinical data of 237 patients treated by ERCP completed by trainee physicians at two hospitals in Eastern China from February 2022 to February 2023 were prospectively collected.All ERCP cases were classified using previously proposed complexity grading scales,including the American Society of Gastrointestinal Endoscopy(ASGE),Morriston and HOUSE grading scales,compared with the hepatopancreatic ampulla features classification.Successful intubation,successful surgical treatment and complication rates within 48 h were recorded.Results Within each grading,subgroups were divided according to severity,and the comparison of intubation success rates between subgroups in the 3 different grades showed statistically significant differences(P = 0.000).The treatment success rate and intubation success rate had similar findings(P = 0.000).There was no correlation between the complication rate and ASGE grading(P = 0.361),Morriston grading(P = 0.332),and HOUSE grading(P = 0.586).When only cases with primitive papillae were considered,the intubation success rate depended on the complexity grading after the newly added classification of hepatopancreatic ampulla features.In the ASGE group,the success rate of intubation was compared between different subgroups,and the difference was statistically significant(P = 0.004);in the Morriston group,the success rate of intubation was compared between different subgroups,and the success rate of intubation was statistically significant(P = 0.002);in the HOUSE group,the success rate of intubation was compared between different subgroups,and the difference was statistically significant(P = 0.000);In the hepatopancreatic ampulla characteristics group,the difference in intubation success rate was statistically significant when compared between different subgroups(P = 0.000).Similar findings were also found for treatment success rate and intubation success rate(P = 0.000).There was no correlation between the complication rate and ASGE group(P = 0.586),Morriston group(P = 0.443),HOUSE group(P = 0.306),and hepatopancreatic ampulla characteristics group(P = 0.350).Conclusion The use of hepatopancreatic ampulla features as a classification of biliary cannulation complexity is feasible and could be an alternative or additional means of predicting successful biliary cannulation and surgical treatment success and could be used in the future to assess endoscopist training and learning progress and technical standards.