Association between maternal pre pregnancy and pre delivery overweight with overweight and obesity of middle school students:a case control study / 中国学校卫生

Objective@#To explore the association between maternal pre pregnancy and pre delivery overweight with overweight and obesity among offspring during adolescence in Guangzhou, and to provide evidence for child obesity prevention.@*Methods@#Based on the routine physical examination of primary and secondary school students in Guangzhou, random sampling was used to 6 middle schools and questionnaire survey was conducted among 3 384 students and their parents. Students with overweight and obesity were included in the case group, and the other students were included in the control group. Propensity Score Matching (PSM) was adopted to reduce selection bias. Logistic regression model and χ 2 test were used to analyze the data before and after PSM.@*Results@#The result of univariate analysis showed that there were statistically significant differences between overweight/obese group and the control group by gender, schooling stage (middle and high schools), picky eater, family history of obesity, family monthly income, delivery mode, high birthweight, and gestational weight gain before PSM( χ 2=42.38, 10.64, 14.47, 26.85, 10.58, 13.59 , 15.53, 20.64, P <0.05). After PSM, results showed that there were no statistically significant differences between overweight/obese group and the control group in middle and high schools, and mother delivery mode( P >0.05). Logistic regression analysis showed that the risk of overweight and obesity of maternal pre pregnancy on adolescent offspring was 1.54 times higher than control group (95% CI =1.01-2.36) before PSM, and the overweight and obesity of maternal predelivery also increased the risk of overweight and obesity of adolescent offspring( OR=2.35, 95%CI =1.67-3.31). After PSM, maternal overweight and obesity pre pregnancy ( OR=2.17, 95%CI =1.41-3.34) and maternal overweight and obesity pre delivery( OR=2.99, 95%CI =2.08-4.31) significantly increased the risk of overweight and obesity in adolescent offspring.@*Conclusion@#Maternal overweight and obesity pre pregnancy and pre delivery are associated with increased risk of overweight and obesity in adolescent offspring.

The impact of ceasing mutual blood donation on voluntary blood donation in Guangzhou / 中国输血杂志

【Objective】 To investigate the impact of ceasing mutual blood donation on voluntary blood donation in Guangzhou. 【Methods】 The data of blood donation from July 2016 to December 2019 (42-month before and after the official cease of mutual blood donation) in the Blood Collection and Supply System of Guangzhou Blood Center, including whole blood donations and apheresis platelets donations, were collected for interrupted time series analysis by month. Blood donors who donated (either whole blood or platelets) during 2016 were followed up until December 31, 2019, and the re-donation rate was analyzed by Chi-square test, t test and logistic regression analysis. 【Results】 The results showed that ceasing mutual blood donation had a significantly positive effect on the increase of platelet donations, but had no significant effect on whole blood donation. In 2016, whole blood donations and platelet donations were mainly voluntary (86.4% and 60.8%, respectively). In comparison of voluntary blood donation, the overall blood deferral rate(by dual assays) of mutual blood donation was higher (P<0.01), but the difference diminished as they donated twice or more. The re-donation rate of blood donors (mutual non-remunerated, voluntary, or both) all increased after the ceasing of mutual blood donation (mutual non-remunerated, : 4.7% vs 4.0%, χ2=29.8, P<0.01; voluntary: 24.8% vs 9.9%, χ2=17295.3, P<0.01; both: 36.3% vs 28.1%, χ2=29.3, P<0.01). The re-donation rate of mutual platelet donors decreased after the ceasing of mutual blood donation, but the number of voluntary platelet donors increased. 【Conclusion】 The ceasing of mutual blood donation was in favour of voluntary blood donation in Guangzhou since various means had been previously adopted by Guangzhou Blood Center to create a long-term mechanism of voluntary blood donation. The number of voluntary blood donors has increased, and the clinical use of blood has been further guaranteed.

Expression of Survivin and hypoxia inducible factor-1α in prostatic carcinoma and their correlations / 肿瘤研究与临床

Objective To detect the expression of Survivin and hypoxia inducible factor-1α (HIF-1α) in prostatic hyperplasia and prostatic carcinoma,and investigate their roles and mutual correlations in pathogenesis and progression of prostatic carcinoma.Methods The expression of Survivin and HIF-1α in proliferative lesions of prostate (15 cases) and prostatic carcinoma (62 cases) were detected by immunohistochemistry method.The relationship between the expressions of Survivin and HIF-1α was analyzed,as well as their correlations with clinicopathological features.Results The positive expression of Survivin and HIF-1α were significantly higher in the prostatic carcinoma [71.0 ％ (44/62) and 69.4 ％ (43/62),respectively] compared with those of the prostatic proliferation [6.7 ％ (1/15) and 0] (x2 =20.56,P 0.001; x2 =23.56,P =0.001,respectively).The expression of Survivin and HIF-1α in prostate carcinoma was significantly related with the histological grading,clinical staging (x2 =10.64,5.39,7.62,6.43,all P ＜ 0.05).And there was positively correlated between Survivin and HIF-lα (rs =0.350,P =0.006).Conclusion Survivin and HIF-1α synergistically play important roles in pathogenesis and progression of prostatic carcinoma.

The effect of calmodulin antagonist berbaminederivative-EBB on hepatoma in vitro and in vivo / 中华医学杂志(英文版)

<p><b>OBJECTIVE</b>To evaluate the anti-hepatoma effect of Calmodulin antagonist 0 - 4-ethoxyl-butyl-Berbamine (EBB), one of the berbamine derivatives.</p><p><b>METHODS</b>Monotetrazolium (MTT) method was used to analyze the effect of EBB on the proliferation and growth inhibition effect. Of a hepatoma cell line in vitro. A mouse hepatoma model was induced by injection of hepatoma cells (H22) in the abdominal cavity. The effect of EBB on survival at different concentrations as well as in combination with 5-FU were investigated in vivo. Flow cytometry analysis, dot blot hybridization, western blot, immunochemistry, enzyme-linked lectin assay (ELISA), trifluoperazine (TFP) and electron microscopic observation were used to study the effect of EBB on cell cycle process, P53 mRNA and protein levels, calmodulin content and ultrastractural changes of hepatoma cells.</p><p><b>RESULTS</b>EBB exerts a very strong inhibitory effect on human hepatoma cell line 7402 and mouse hepatoma cell line H22 in vitro. The IC(50) value of EBB for the two cell lines are 3.312 microg/ml and 1.167 microg/ml, respectively. The sensitivity of H22 cells to 5-FU can be markedly enhanced: The IC(50) dosage of 5-Fu can be decreased from 0.75 microg/ml down to 0.15 microg/ml, when jointly administered with nontoxic dosages of EBB (IC(10)). In vivo, EBB can prolong the lifespan of mice with ascites H22 to more than three months. 64% of mice survived, while all animals in the control group died by the 18th day. When EBB (5 mg x kg(-1) x d(-1)) is jointly used with 5-FU (25 mg x ml(-1) x d(-1)), 73% of mice with ascites H22 survived, much higher than 27% in the 5-FU treated group. EBB can enhance the anti-hepatoma ability of 5-Fu treatment. EBB mechanism against hepatoma: P53 expression in the EBB treated group is substantially higher than that in the control group. EBB increased the translation of P53. As a calmodulin antagonist, EBB decreases amount of the CaM in hepatoma cells and blocked the hepatoma cell proliferation cycle at the G(2)M phase. Before the G(0)/G(1) phase, a diploid peak and apoptic cells in the treated groups were observed.</p><p><b>CONCLUSIONS</b>The CaM antagonist, EBB, has a strong anti-hepatoma effect and enhances the effect of 5-FU, induces hepatoma cell to apoptosis, promotes the P53 protein expression and decreases the amount of CaM in the cytoplasm. All these results demonstrate that EBB is a new and potentially useful drug against hepatoma and should be researched further.</p>

Dexamethasone enhances aorta-derived CD_(105)~+ mesenchymal stem cells to differentiate into adipocytes / 中国病理生理杂志

AIM: To investigate whether aorta-derived CD_(105)~+ cells show characteristics of mesenchymal stem cells, and if dexamethason enhances this kind of CD_(105)~+ cells to differentiate into adipocytes. METHODS: The distribution of CD105 in aorta was assessed by immunohistochemistry. The aorta wall cells were isolated and immunophenotypes were identified by FACS. CD_(105)~+ cells were sorted using MACS CD105 micromagnetic beads. The differentiation of CD_(105)~+ cells into adipocytes and osteoblasts was induced under different conditions and indicated by staining of Oil red O, detecting of alkaline phosphatase activity, calcium accumulation stained with silver nitrate and transmission electron microscope analysis, respectively. RESULTS: The endothelial cells, a part of medial smooth muscle cells and adventital fibroblasts were CD105 positive. The isolated aortic arch cells were positive for CD105, CD106, CD44, CD29, and negative for CD45, CD11a, CD11b and HLADR. The CD_(105)~+ cells differentiated into adipocytes contained Oil-Red-O-positive lipid droplets, the osteocytes with calcium deposition and alkaline phosphatase activity. Ultrastructurally, it was observed that some needle-shaped crystal calcium deposition similar to bone spicules was inside the cytoplasm of induced osteocytes. When the dexamethason was absent in the adipogenic medium, there were no adipocytes with lipid droplets. CONCLUSION: The results demonstrate that CD_(105)~+ cells show characters of MSCs reside in aortic wall, and is able to differentiate into adipocytes and osteocytes in vitro. Dexamethasone enhances aorta-derived CD_(105)~+ with characters of MSCs to differentiate into adipocytes. These suggeste that MSCs might be related with atherosclerosis. [