Analysis of risk factors for dental caries in deciduous teeth among preschool children / 口腔疾病防治

Objective@#To investigate the risk factors for caries in preschool children to provide a scientific basis for the prevention and treatment of caries in primary teeth.@*Method@#From July 2017 to September 2017, 183 children aged 3-6 who received treatment for caries in the Department of Pediatric Dentistry, West China Hospital of Stomatology, Sichuan University, were randomly selected for recording of the caries status of deciduous teeth, and a questionnaire was collected from their guardians. Risk factors for caries in primary teeth were analyzed using SPSS 21.0 software．@*Results@#The mean dmft (decayed, missing and filled teeth) value of all samples was 9.91 ± 5.12. There was no significant difference in dmft between boys (10.38 ± 5.26) and girls (9.55 ± 5.01) (t = -1.088, P > 0. 05). There were 40 cases (21.86%) in the mild caries group (dmft = 3.13 ± 1.34) and 143 cases in the severe group (dmft = 11.80 ± 4.07). Oral hygiene before one year of age, duration of tooth brushing, number of oral hospital examinations and frequency of sugar intake were significantly associated with caries status (P < 0.05). Children who brushed their teeth for less than 2 minutes and consumed sugar frequently had high dmft values. Duration of tooth brushing and frequency of sugar intake were significantly associated with caries in the primary teeth (P < 0.05).@*Conclusion@#Insufficient tooth brushing time and frequent sugar intake are major risk factors for deciduous caries.

Spectrum-effect relationship of antitussive effect by total organic acids in crude and four processed Pinellia ternate based on gray relative analysis method / 中草药

Objective: To investigate the HPLC fingerprint of the total organic acids in Pinelliae Rhizoma (the rhizomes of Pinelliae ternate), Pinelliae Rhizoma Praeparatum cum Alumine, Pinelliae Rhizoma Praeparatum cum Zingibere et Alumine, Pinelliae Rhizoma Praeparatum and Pinelliae Rhizoma Praeparatum cum Glycyrrhizae et Alumine, and the its relationship with antitussive effect, and to establish the spectrum-effect relationship of the total organic acids in crude and processed P. ternate and antitussive effect, so as to elucidate their material basis of antitussive effect. Methods: The gray relative analysis method was used to make correspond analysis of the HPLC fingerprints of total organic acids in Pinelliae Rhizoma and processed products related with three antitussive indexes (the latent period, coughing times in 3 min, and inhibitatory rate), establishing the spectrum-effect relationship between them. Results: The total organic acids of crude Pinelliae Rhizoma and its processed products showed the antitussive activity against the ammonium hydroxide-induced mice cough, consist with arresting cough of Pinelliae Rhizoma. The HPLC data demonstrated that the chemical composition represented by peak 4, 6 (succinic acid), and 12 had strong relevancy with anti-tussive activity and made a great contribution to this activity, especially peak 4, which had bigger area and stronger relevancy. Conclusion: This paper reveals that there exists the correlations between the HPLC fingerprints of total organic acids and antitussive effect of crude and processed Pinelliae Rhizoma, elucidating the material basis of antitussive effects in crude and processed P. ternate by the spectrum-effect study, and could provide a theory basis for the quality control and analysis of Pinelliae Rhizoma.

Grey Relation Analysis between Phytoplankton Diversity and Water Quality in Neijiang River,Zhenjiang / 环境与健康杂志

BOD,the same for the water quality factor and zooplankton.The water quality index DO,COD and TN were the key factors to influence phytoplankton density.Conclusion The diversity of phytoplankton and zooplankton in Neijiang River,Zhenjiang is considered as better.

Relative analysis on clinical characteristics from 52 cases of the collateral circulation establishment with total coronary occlusion / 中国实用内科杂志

Objective To find out the factors which influence the establishment of collateral circulation as well as its clinical characteristics by analyzing the sufferers' medical records.Methods Review and collect the records of the first coronary angiography,and we can find the total occlusion of one coronary after coronary angiography.There are 52 cases in which people who suffered the establishment of collateral circulation stay in hospital for treatment.Here,we take 52 cases in which people didn't suffer into comparison and analyze these clinical records.Results Use the Logistic regression method to analyze the relationship between general clinical data,past history,habits,current medication and the establishment of collateral circulation,which relates to the diabetes mellitus anamnesis,exercise and drinking habits,with the regression coefficient is 0.408,0.483,0.197(P