Risk factors for anorexia in children / 中国当代儿科杂志

<p><b>OBJECTIVE</b>To investigate the risk factors for anorexia in children, and to reduce the prevalence of anorexia in children.</p><p><b>METHODS</b>A questionnaire survey and a case-control study were used to collect the general information of 150 children with anorexia (case group) and 150 normal children (control group). Univariate analysis and multivariate logistic stepwise regression analysis were performed to identify the risk factors for anorexia in children.</p><p><b>RESULTS</b>The results of the univariate analysis showed significant differences between the case and control groups in the age in months when supplementary food were added, feeding pattern, whether they liked meat, vegetables and salty food, whether they often took snacks and beverages, whether they liked to play while eating, and whether their parents asked them to eat food on time (P<0.05). The results of the multivariate logistic regression analysis showed that late addition of supplementary food (OR=5.408), high frequency of taking snacks and/or drinks (OR=11.813), and eating while playing (OR=6.654) were major risk factors for anorexia in children. Liking of meat (OR=0.093) and vegetables (OR=0.272) and eating on time required by parents (OR=0.079) were protective factors against anorexia in children.</p><p><b>CONCLUSIONS</b>Timely addition of supplementary food, a proper diet, and development of children's proper eating and living habits can reduce the incidence of anorexia in children.</p>

METHODS OF THE DIRECTED MOLECULAR EVOLUTION OF ENZYNE IN VITRO / 微生物学通报

The directed molecular evolution of enzyme in vitro can not only improve the efficiency of evolution, but also evolve enzyme according to the investigator's desire. This review summed up the feasible methods of this novel technique.