Effect of colostrum on immunoglobulin A levels among premature infants: a meta-analysis / 预防医学

Objective@#To systematically evaluate the effect of colostrum on immunoglobulin A (IgA) levels among premature infants, so as to provide the evidence for improving premature infants' health with colostrum feeding.@*Methods@#Randomized controlled clinical trials (RCTs) or controlled clinical trials (CCTs) pertaining to the effect of colostrum and IgA levels among premature infants were retrieved in national and international databases from inception to September 30, 2022, including CNKI, Wanfang Data, PubMed and Web of Science. Standardized mean difference (SMD) was used as an effect index for meta-analysis. The robustness of the results was evaluated using sensitivity analysis, and the publication bias was evaluated using Begg's test, Egger's test and funnel plot.@*Results @#A total of 650 publications were retrieved initially, and 10 studies were finally included, including 9 RCTs and one1 CCT, with 677 participants. Meta-analysis showed higher secretory salivary secretory IgA levels among premature infants with colostrum feeding than among controls (SMD=0.49, 95%CI: 0.08-0.89), and there were no significant differences between groups in terms of urinary secretory IgA levels (SMD=0.19, 95%CI: -0.39-0.77) or blood IgA levels (SMD=0.29, 95%CI: -0.01-0.59). Sensitivity analysis showed robustness of meta-analysis results, and no publication bias was examined.@*Conclusion@#Colostrum feeding may increase salivary secretory IgA levels among premature infants; however, it has no effect on urine salivary secretory IgA levels or blood IgA levels.

E-cigarette use among middle school students in Hainan Province / 预防医学

Objective@#To investigate of e-cigarette use among middle school students in Hainan Province, so as to provide insights into tobacco control among adolescents.@*Methods@#Students were randomly sampled using a multistage stratified cluster random sampling method from three junior high schools, two high schools and one vocational high school in Hainan Province from July to October, 2021. Participants' basic features, use of e-cigarettes, e-cigarette advertising exposure were collected using the Questionnaire on Tobacco and Alcohol Prevalence among Chinese Adolescents in 2021 prepared by Chinese Center for Disease Control and Prevention. Following data weighting, students' use of e-cigarettes and exposure to e-cigarette advertisements were descriptively analyzed, and factors affecting current use of e-cigarettes were identified using a multivariable logistic regression model.@*Results@#A total of 8 561 questionnaires were allocated, and 8 538 valid questionnaires were recovered, with an effective recovery rate of 99.73%. The respondents included 4 470 boys (52.35%) and 4 068 girls (47.65%), and there 4 367 junior high school students (51.15%), 3 482 high school students (40.78%), and 689 vocational high school students (8.07%). The rate of e-cigarette use was 25.01% and the rate of current e-cigarette use was 4.68%. There were 2 728 respondents with exposure to e-cigarette advertising during the past 30 days, and the number of weighted individuals were 210 932 (32.60%). The route of e-cigarette advertising exposure mainly included point-of-sale (21.59%), stores (13.61%), and shopping websites (9.01%). Multivariable logistic regression analysis identified region (OR=0.610, 95%CI: 0.482-0.772), males (OR=1.332, 95%CI: 1.062-1.669), high school students (OR=0.376, 95%CI: 0.259-0.545), companion smoking (OR=6.645, 95%CI: 4.935-8.948) and advertising exposure (OR=3.229, 95%CI: 2.581-4.040) as factors affecting current use of e-cigarettes. @*Conclusions@#The use of e-cigarettes among middle school students is higher in Hainan Province than the national level, and exposure to e-cigarette advertisements may facilitate use of e-cigarettes. It is necessary to strengthen the supervision of e-cigarettes, strictly restrict e-cigarettes advertisements and promotions.

Immune function of zhenqi fuzheng capsule on volleyball players after high intensity training / Função imunitária da cápsula zhenqi fuzheng em jogadores de voleibol após treinamento de alta intensidade / Efecto de la cápsula zhenqi fuzheng sobre la función inmune de los jugadores de voleibol después del entrenamiento de alta intensidad

ABSTRACT At present, many studies have proved that proper exercise can promote the immune function of human body to a certain extent, but athletes need a lot of high-intensity sports training, and their immune function declines instead of improving. In order to control the decline of immune function of athletes after high-intensity training, this study propose the Zhenqi Fuzheng capsule to achieve this goal. Through experimental comparison, the parameters such as white blood cell content, immunoglobulin number, T lymphocyte, human hemoglobin content and exercise exhaustion time were detected after high-intensity training. The results showed that compared with the control group taking Zhenqi Fuzheng, the weight of those who had taken qifuzhengs capsule did not change, and the content of white blood cells, immunoglobulin, hemoglobin content and exercise time increased to a certain extent. The results showed that Zhenqi Fuzheng could inhibit the decrease of body immune function after high-intensity exercise, then accelerate the recovery of human immune function. This study is expected to enhance the immunity of sports athletes, and reduce athletes' pain after high-intensity training.

RESUMO Atualmente, muitos estudos prova que exercícios adequados podem promover a função imunológica do corpo humano em certa medida, mas os atletas precisam de muito treinamento esportivo de alta intensidade, e sua função imunológica diminui em vez de melhorar. A fim de controlar o declínio da função imunológica dos atletas após treinamento de alta intensidade, este estudo propôs a administração da cápsula Zhenqi Fuzheng para alcançar esse objetivo. Através de comparação experimental, foram detectados parâmetros como o teor de glóbulos brancos, imunoglobulina, linfócitos T, hemoglobina humana e tempo de exaustão do exercício após treinamento de alta intensidade. Os resultados mostraram que, em comparação com o grupo controle que tomou a cápsula Zhenqi Fuzheng, o peso daqueles que tinham tomado a cápsula de qifuzheng não se alterou, e o teor de glóbulos brancos, imunoglobulina, hemoglobina e o tempo de exercício aumentaram em certa medida. Os resultados mostraram que a cápsula Zhenqi Fuzheng poderia inibir a diminuição da função imunológica corporal após exercícios de alta intensidade, e acelerar a recuperação da função imunológica humana. Espera-se que este estudo possa aumentar a imunidade dos atletas e reduzir a dor dos atletas após treinamento alta intensidade para fornecer uma certa referência.

RESUMEN Actualmente, muchos estudios prueban que ejercicios adecuados pueden promover la función inmunológica del cuerpo humano en cierta medida, pero los atletas precisan mucho entrenamiento deportivo de alta intensidad, y su función inmunológica disminuye en vez de mejorar. A fin de controlar la declinación de la función inmunológica de los atletas después del entrenamiento de alta intensidad, este estudio propuso la administración de la cápsula Zhenqi Fuzheng para alcanzar ese objetivo. Por medio de comparación experimental, fueron detectados parámetros como el tenor de glóbulos blancos, inmunoglobulina, linfocitos T, hemoglobina humana y tiempo de agotamiento del ejercicio después de entrenamiento de alta intensidad. Los resultados mostraron que, en comparación con el grupo control que tomó la cápsula Zhenqi Fuzheng, el peso de aquellos que habían tomado la cápsula de qifuzheng no se alteró, y el tenor de glóbulos blancos, inmunoglobulina, hemoglobina y el tiempo de ejercicio aumentaron en cierta medida. Los resultados mostraron que la cápsula Zhenqi Fuzheng podría inhibir la disminución de la función inmunológica corporal después de ejercicios de alta intensidad, y acelerar la recuperación de la función inmunológica humana. Se espera que este estudio pueda aumentar la inmunidad de los atletas y reducir el dolor después de entrenamiento de alta intensidad para proveer una cierta referencia.

Correlation between WT1 gene polymorphism and multiple myeloma susceptibility / 中国肿瘤生物治疗杂志

@#Objective: To analyze the correlation between WT1 gene polymorphism and multiple myeloma (MM) susceptibility in 168 patients. Methods: One hundred and sixty eight MM patients, who were hospitalized in our hospital and Hebei Provincial People's Hospital from January 2013 to December 2017, were researched in this study. There were 121 males (72%) and 47 females(28%) with a median age of 62.4 years old (36~83 years old). Polymorphism of WT1 gene of the samples was detected and analyzed by SSP-PCR and SBT-PCR. Results: Eleven WT1 alleles were detected in MM patients, WT1*010 and WT1*012 alleles occupied a higher frequency in MM group (WT1*010: OR=6.13, 95%CI:3.5~10.75, PC<0.000; WT1*012: OR=2.06, 95%CI:1.23~1.44, PC<0.051). STR genotype frequency of WT1*A5 markedly increased (OR=1.62, 95%CI:1.18~2.23, PC<0.05). Genotype frequency of WT1*010/010 also obviously increased (OR=6.28, 95%CI:1.81～21.76, PC<0.05). Conclusion: WT1 allele is highly polymorphic in MM patients and homozygote WT1*010/010 is a susceptible genotype of MM, indicating that the occurrence and development of MM are related to the polymorphism of WT1 gene.

Response surface methodology based optimization for degradation of align in Laminaria japónica feedstuff via fermentation by Bacillus in Apostichopus japónicas farming

Background: The alga Laminaria japonica is the most economically important brown seaweed cultured in China, which is used as food and aquatic animal feedstuff. However, the use of L. japonica as a feedstuff in Apostichopus japonicasfarming is not ideal because A. japonicas does not produce enough enzyme activity for degrading the large amount of algin present in L. japonica. In this study, semi solid fermentation of the L. japonica feedstuff employing a Bacillus strain as the microbe was used to as a mean to degrade the algin content in L. japonica feedstuff. Results: The Bacillus strain, Bacillus amyloliquefaciens WB1, was isolated by virtue of its ability to utilize sodium alginate as the sole carbon source. Eight factors affecting growth and algin-degrading capacity of WB1 were investigated. The results of Plackett-Burman design indicated that fermentation time, beef extract, and solvent to solid ratio were the significant parameters. Furthermore, the mutual interaction between the solvent to solid ratio and beef extract concentration was more significant than the other pairs of parameters on algin degradation. Optimal values obtained from Central-Composite Design were 113.94 h for fermentation time, 0.3% (w/v) beef extract and 44.87 (v/w) ratio of solvent to feedstuff. Under optimal conditions, 56.88% of the algin was degraded when a 50-fold scale-up fermentation was carried out, using a 5-L fermenter. Conclusions: This study provides an alternative and economical way to reduce the algin content in L. japonicathrough degradation by WB1, making it a promising potential source of feed for cultured L japonica.

Active anti-acetylcholinesterase component of secondary metabolites produced by the endophytic fungi of Huperzia serrata

Background An endophytic fungus lives within a healthy plant during certain stages of, or throughout, its life cycle. Endophytic fungi do not always cause plant disease, and they include fungi that yield different effects, including mutual benefit, and neutral and pathogenic effects. Endophytic fungi promote plant growth, improve the host plant's resistance to biotic and abiotic stresses, and can produce the same or similar biologically active substances as the host. Thus, endophytic fungal products have important implications in drug development. Result Among the numerous endophytic fungi, we identified two strains, L10Q37 and LQ2F02, that have anti-acetylcholinesterase activity, but the active compound was not huperzine A. The aim of this study was to investigate the anti-acetylcholinesterase activity of secondary metabolites isolated from the endophytic fungi of Huperzia serrata. Microbial cultivation and fermentation were used to obtain secondary metabolites. Active components were then extracted from the secondary metabolites, and their activities were tracked. Two compounds that were isolated from endophytic fungi of H. serrata were identified and had acetylcholine inhibitory activities. In conclusion, endophytic fungal strains were found in H. serrata that had the same anti-acetylcholinesterase activity. Conclusion We isolated 4 compounds from the endophytic fungus L10Q37, among them S1 and S3 are new compounds. 6 compounds were isolated from LQ2F02, all 6 compounds are new compounds. After tested anti acetylcholinesterase activity, S5 has the best activity. Other compounds' anti acetylcholinesterase activity was not better compared with huperzine A.