Objective:To establish a method for determination of iodine in salt by arsenic-cerium catalytic spectrophotometry.Methods:The content of iodine in salt was detected by arsenic-cerium catalytic spectrophotometry with an automatic iodine analyzer. The standard curve linearity, detection limit, precision and accuracy of the method were evaluated. The iodine content of 20 edible salt samples was detected by the newly established method and direct titration, and the results were compared.Results:In the range of 0 - 150 μg/L standard curve, the correlation coefficient ( r) = - 0.999 9, and the detection limit was 1.4 mg/kg. The average iodine contents of iodine composition analysis standard materials GBW10006z and GBW10007z were 12.2 and 22.8 mg/kg ( n = 6), respectively, which were all within the given standard value ranges, and the relative standard deviations ( RSD) were 2.04% and 2.33%, respectively. Iodine composition analysis standard materials GBW10006b, GBW10007b, GBW10006v, GBW10007v, GBW10006z and GBW10007z measurement results (12.0, 24.6, 12.6, 22.8, 12.3, 23.2 mg/kg, n = 2) were all within the given standard value ranges, with good quality control. The iodine content of 20 edible salt samples was detected by arsenic-cerium catalytic spectrophotometry and direct titration, respectively, and the difference was not statistically significant ( t = 1.99, P = 0.060). Conclusion:Arsenic-cerium catalytic spectrophotometry has the characteristics of good linear relationship, low detection limit, good precision and high accuracy in determination of salt iodine content, which is suitable for popularization and application.

In recent years, the interaction mechanisms underpinning the synthetic microbial co-culture systems have gained increasing attention due to their potentials in various biotechnological applications. Exploration of the inter-species mechanisms underpinning the synthetic microbial co-culture system could contribute to a better understanding of the theoretical basis to further optimize the existing co-culture systems, and design new synthetic co-culture system for large-scale application. OMICS technologies such as genomics, transcriptomics, proteomics, and metabolomics could analyze the biological processes in a high throughput manner. Multi-omics analysis could achieve a "global view" of various members in the microbial co-culture systems, which presents opportunities in understanding synthetic microbial consortia better. This article summarizes recent advances in understanding the mechanisms of synthetic microbial co-culture systems using omics technologies, from the aspects of metabolic network, energy metabolism, signal transduction, membrane transport, stress response, community stability and structural rationality. All these findings could provide important theoretical basis for future application of the microbial co-culture systems with the aids of emerging biotechnologies such as synthetic biology and genome editing.
Coculture Techniques ; Genomics ; Metabolomics ; Proteomics ; Synthetic Biology

Objective:To investigate the correlation between item d560 of the International Classification of Functioning, Disability and Health (ICF) and the swallowing function of convalescing stroke patients.Methods:A total of 140 convalescent stroke survivors were evaluated for dysphagia using the ICF-d560 and the modified Watian drinking water test. Linear regression was used to analyze the influence of clinical factors when choosing a swallowing function assessment scale. Spearman correlation was computed to explore the correlation between ICF item d560 and the modified Watian drinking water test.Results:According to the ICF-d560 results, 10% of the patients had a mild disorder, with another 37.1% moderate, 29.3% severe and 23.6% completely dysphagic. The corresponding percentages according to the improved Watian drinking water test were 44.3% mild, 31.4% moderate and 24.3% severe. The total correlation coefficient between the two sets of results was 0.86, which was related to the stroke type, age, gender and stroke risk factors. The correlation coefficient of the cerebral infarction group was significantly higher than the cerebral hemorrhage group′s coefficient, and that of the women was slightly higher than that of the men. The strength of the correlation increased with age. The correlation coefficient was 0.84 among both diabetics and hypertension sufferers.Conclusions:Results from the ICF-d560 and the modified Wada drinking water test correlate well, which can provide a screening tool for swallowing function based on the ICF theoretical framework.

Objective:To assess the impact of zero makeup policy for drug and medical supplies on hospitals. Methods:Descrip-tive statistics and comparative analysis were used to analyze the related indicators, profit and loss calculation and the cost of patients from April 2014 to March 2017.Results:After the policy was implemented, the number of outpatients and the number of outpatients choosing general doctors decreased. The average length of hospitalization was 8.88 days, and the proportion of drug consumption was 34.10%. The number of outpatients choosing medical experts, the number of inpatients and the proportion of surgical treatment in-creased. Although the policy benefited patients,the average medical expenditure still increased. There was policy loss in the hospital. Conclusion:The reform promotes the implementation of hierarchical medical system, optimizes the hospital income structure and re-duces drug proportion significantly,which achieves the original intentions of the policy to some extent.

Objective To establish a method for quantitative detection of urine iodine by catalytic spectrophotometry using discrete chemical analyzer.Methods After digestion of urine samples,discrete chemical analyzer was used to control the reaction temperature and time,determine the iodine content,which replaced the urine iodine arsenic cerium catalytic spectrophotometry (standard method) after sample digestion in the testing process,and the linear range,detection limit,precision and accuracy of the method were tested.The method was used to detect the urine iodine and the results were compared with the standard method.Results The urinary iodine was in a linear range of 0-1 000 μg/L,correlation coefficient r =-0.999 7.The detection limit of the method was 4.5 μg/L.Precision:the relative standard deviation (RSD) of urine iodine samples with high,medium,and low concentrations were all ＜ 5％.Accuracy:the contents of urinary iodine in reference materials at high,medium,and low concentrations were within their respective given value ranges.No statistical significant was found in the urinary iodine content detected either by this method or the standard method (t =0.643 8,P ＞ 0.05).Conclusion Catalytic spectrophotometry using discrete chemical analyzer is succeessfully established,this method is simple,rapid,accurate and easy to operate.

Objective To analyze the abnormal detectable rates of different kinds of blood test indexes before and after treatment in the patients with snake bite and to probe into the change condition of these indexes after different snake bite .Methods The inpa‐tients with clearly diagnosed what kind of snake bite in the past two years were selected as the research subjects .The multiple blood test indexes were determined before and after treatment in these patients .The abnormal detectable rates of these indexes were ana‐lyzed and compared among various snake bite patients .Results The different kinds of snake bite all could cause the different de‐grees of changes in some detection indexes among partial patients .Specially ,the detectable rates of WBC ,PT ,APTT ,TT ,D‐D ,CK , CK‐MB ,LDH ,Urea ,Cr and Cys‐C increase and PLT and Fbg decrease caused by viper bite were apparently higher than those caused by other kinds of snake bites (P<0 .05) .The detectable rates of CO2 increase and K+ decrease in the coral snake bite were apparently higher than those in trimeresurus gramineus ,cobra and viper bite (P<0 .05) .Conclusion Because the snake species and toxicities are different in the various snake bites ,so the caused changes and the abnormal detectable rates of blood test indexes also are different .

Objective To study effect of high ilioinguinal approach in treatment of acetabular fractures involving quadrilateral plate. Methods 28 cases of acetabular fractures were randomly divided into two groups according to admission time. 16 patients in the observation group were given high ilioinguinal approach operation. 12 patients in the control group were treated with traditional ilioinguinal approach op-eration. Operation condition, fracture reduction, the hip function recovery and postoperative complications of the two groups were compared. Results The amount of bleeding, the length of incision, operation time and operation conditions of the two groups had no significant differ-ence (P>0. 05). The satisfactory fracture reduction rate of observation group was higher than the control group (P<0. 05). Hip function score of observation group was significantly higher than that of the control group (P<0. 05). In observation group, the excellent rate of hip joint function was better than that of the control group (P<0. 05). The incidence rate of complications in the observation group and the con-trol group were 12. 50% and 16. 67% respectively, and there was no significant difference between the two groups (P>0. 05). Conclusion High ilioinguinal approach can improve the fracture reduction effect, effectively improve the hip joint function in patients, and it has higher security which is a kind of ideal treatment approach for acetabular fractures involving quadrilateral plate.

Objective To explore the change regulation of blood coagulation function before and after treatment of snake bite pa‐tients .Methods A total of 226 hospitalized patients with clear diagnosis belong to what kind of snakes in the past two years were selected in this study ,39 cases were bit by coral ,76 cases were bit by trimeresurus stejnegeri ,47 cases were bit by cobra ,24 cases bit by king cobra ,40 cases were bit by adder .Five blood coagulation indexes were determined before and after treatment various pe‐riods for these patients .The tested results were made to statistical analysis according to kind of snakes ,periods and disease condi‐tion .Results D‐D level obvious .rise before treatment for the severe cases patients of coral snake bite (P<0 .05) .Plasma prothrom‐bin time (PT) ,activated partial clotting enzyme live time (APTT) ,thrombin time (TT)and D‐D level rise and Fib level reduced be‐fore treatment for the severe cases patients of trimeresurus stejnegeri bite ,and Fib and D‐D level before and after treatment had sta‐tistical significant difference with the mild patients (P<0 .05) .Every index for the cobra and king cobra had no statistical signifi‐cant differences (P>0 .05) before and after treatment ,only D‐D level of the severe cases had statistical significance before treat‐ment in contrast to the mild cases of cobra bite (P< 0 .05) .The changes of 5 item blood coagulation indexes were all very large whether mild or severe for viper bite patients ,a number of comparisons had statistical significance difference (P<0 .05) whether before or after treatment and whether mild or severe for viper bite patients .Conclusion The bite of coral snake ,cobra and king co‐bra affect little for the blood coagulation function .The severe cases patients of trimeresurus stejnegeri bite might lead to more seri‐ous blood coagulation function abnormality but the recovery is faster after treatment .The viper bite might lead to maximum blood coagulation function abnormality and the recovery is slow after treatment .

Objective To investigate the anti-inflammatory effects and mechanism of durian peel extracts (DPE). Methods The in vivo anti-inflammation effects of DPE were examined by carrageenin-induced mice paw edema test and allergic contact dermatitis test induced by 2, 4-DNFB. And the in vitro anti-inflammation effects of DPE were evaluated with methyl thiazolyl tetrazolium ( MTT) assay in RAW 264.7 cell model of inflammation induced by lipopolysaccharide (LPS). Results The results of animal experiments showed that DPE groups could markedly relieve mice paw edema induced by carrageenin ( P<0.01 or P<0.001 compared with blank group). DPE could effectively inhibit the allergic contact dermatitis induced by 2, 4-DNFB in mice, showing good dose-effect relationship. The results of in-vitro test showed that DPE at the given concentrations had no influence on RAW 264.7 cell proliferation. Tumor necrosis factor alpha ( TNF-α) , interleukin 6 ( IL-6) , interleukin 1 beta (IL-1β), nitric oxide (NO) and nuclear factor kappaB (NF-кВ ) were observably inhibited, and anti-inflammatory cytokine IL-10 was enhanced by 25 and 50 mg/L of DPE. Conclusion DPE exert potential anti-inflammation effect, and the mechanism might be related to its inhibition of NF-кВsignal pathway.