Objective:To improve and optimize the determination methods for 15 chemical sun-screening agents in cosmetics by HPLC described in Hygienic Standard for Cosmetics (2007 edition) to enhance the quality control of limited chemical sun-screening a-gents in cosmetics. Methods:The samples were extracted using the improved mixed liquor. The detection was performed on an Accur-asilC18(250mm×4.6mm,5um)analyticalcolumn,themobilephasewasmethanol-tetrahydrofuran-water(adjustingpHto2.60 with acetic acid) with gradient elution, the flow rate was 1. 0 ml·min-1 , the column temperature was 25℃,and the detection wave-length was 311nm. Results:The method showed good linear relationship and the correlation coefficient was above 0. 999 5, the detec-tion limit was 1. 9-18. 7 ng, and the average recovery was within the range of 97. 5%-113. 7% with RSD of 0. 85%-1. 56%(n=9). Conclusion:The improved method is reliable, which is the effective optimization and complement for the determination methods of chemical sun-screening agents in cosmetic described in Hygienic Standard for Cosmetics (2007 edition).

AIM:To investigate the protective effect of ginger oil on liver.METHODS:Mouse model of acute hepatic injury induced by carbon tetrachloride and acetaminophen were used to observe the protective effect of ginger oil on liver.RESULTS:Ginger oil could obviously decrease ALT and AST levels of mouse model of acute hepatic injury induced by carbon tetrachloride and acetaminophen,significantly decrease MDA level of rat liver tissue and mouse serum(P

Objective To study the effects of closed self-help sterile gloves wearing in surgical operations.Methods One hundred surgical personnel were randomly divided into two groups:the observation group(n=51)using the closed self-help gloves wearing and the control group(n=49)using the conventional wearing.The two group were compared about the rates of edge curling of the gloves and cuff exposure.Result The closed self-help gloves wearing group had significantly lower rates of edge curling and cuff exposure than the control group(P<0.05,for both).Conclusion Closed self-help gloves wearing can effectively prevent the edge from curling during wearing gloves and reduce cuff exposure in the operation so as to reduce the risk of surgical contaminations.

Objective To summarize the characteristics of ecthyma gangrenosum and explore its significance in early diagnosis of pseudomonas aeruginosa sepsis in children.Methods We retrospectively reviewed the medical records of 11 children with ecthyma gangrenosum who were hospitalized at Guangzhou women and children's medical center between May 2008 and Apr 2011.Results Eight cases were male and 7 were less than twelve months,the oldest was 2 years old,all of them were diagnosed as Pseudomonas aeruginosa spesis.Two patients had a single lesion,and the others had multiple lesions.Ecthyma gangrenosum located on the trunks in 7 cases,on anogenital areas in 5 cases,on extremities in 5 cases and on faces in 3.The lesions appeared on day 2 to day 10.On average,they developed on day 5.Seven patients developed ecthyma gangrenosum before admission,the course of the illness before admission was 6 days.Fever and multiple organ dysfunction occurred in all the patients and their cultures grew pseudomonas aeruginosa,blood cultures were positive in 8 cases,the others were isolated psudomonas aeruginosa from tissue of the lesion,discharge,ascites,pleural effusion,respectively.The time of ecthyma gangrenosum appeared was earlier than the time of the culture results reported.All of the patients were started empiric antibiotics therapy on admission,the initial antibiotic regimen was appropriate in 9 patients,8 needed surgical intervention,4 were treated with continuous blood purification.Ten patients survived and 2 died,the hospital stay was from 1 to 63 days,the average was 30.Conclusion Ecthyma gangrenosum is a known cutaneous manifestation of pseudomonas aeruginosa sepsis,which is helpful for early diagnosis and treatment,and then the outcome will be improved.

Objective To summarize the clinical features,treatment and prognosis of infantile hepatic hemangioendothelioma(IHHE) combined with congestive heart failure(CHF) in children.Methods A retrospective analysis was made with the clinical data from 4 children with IHHE combined with CHF in Department of Pediatric Cardiology,Affiliated Guangzhou Women and Children's Medical Center of Guangzhou Medical University from May 2013 to December 2015.Results Among 4 infants,there were 3 male and 1 female,mean aged of 109 days (21-219 days),the average weight of 4 350 g (2 750-6 500 g),and 1 case was admitted because of abdominal swelling and respiratory distress,1 case of abdominal swelling,jaundice,shortness of breath admission,1 case of fever and shortness of breath admission,and 1 case of cyanosis and shortness of breath admission.Two patients were associated with hemangioma and Kasabach-Merritt syndrome.Three cases had multiple liver hemangioma scattered in the left lobe and right lobe of the liver,and 1 case had solitary liver hemangioma scattered in the right lobe.Tumor size diameters were ranged from 2-10 mm.Four children had been used Prednisone [1-2 mg/(kg · d)] and Digoxin,Dopamine,Furosemide,Spironolactone.Two cases responsed well to the therapy and were followed up for 2 years or 1 year and 6 months respectively,whose heart size,heart function and pulmonary hypertension became normal.One case with Kasabach-Merritt syndrome responsed poorly to the therapy.Two cases experienced transcatheter hepatic arteriovenous fistula embolization by using coil occlusion of hepatic artery-venous fistula.The postoperative hepatic tumor volume was significantly decreased,and the heart function was improved.One patient was followed up for 1 year and 6 months,and the heart size,pulmonary hypertension and heart function returned to normal.One case was still under follow-up.One case with Kasabach-Merritt syndrome died from heart failure and severe infection before surgery.The mortality rate was 25％ (1/4 cases).Conclusions IHHE is a rare cause of CHF in children.If heart failure is found unexplained in children,abdominal ultrasound or CT examination should be done immediatey in order to confirm the presence or absence of IHHE.The mortality rate in IHHE associated with CHF is very high.Early identification,early intervention,especially Prednisone combined with transcatheter hepatic arteriovenous fistula embolization can significantly improve heart function,reduce the mortality and improve the prognosis of IHHE associated with CHF in children.

Objective:To dynamically describe the drug concentration change in different time in vivo to understand the in vivo be-havior patterns and rules of drugs, provide reference for performing individual treatment and avoiding adverse drug reactions and lay foundation for dynamic description of physiological pharmacokinetic model. Methods:A two-compartment model was established using Simulink dynamic simulation and used in curve fitting and parameter estimation. The results from the model were compared with those from 3P97 software. Results:There was no significant difference between the results from the dynamic model and those from 3P97 soft-ware. Conclusion:The dynamic model can be used to dynamically simulate two-compartment model for oral administration. The re-sults from the dynamic simulation are more direct, and can correct the fitting error in 3P97 software.

BACKGROUND:Both calcium phosphate cement II and recombinant human bone morphogenetic protein have certain osteoinductive effects, which have the possibility of repairing tendon-bone interface injury. OBJECTIVE: To investigate the osteoinductive effect of calcium phosphate cement II and its biomechanics analysis of repairing tendon-bone interface injury. METHODS:Five out of 35 adult healthy New Zealand white rabbits were randomly selected and their bilateral shoulder joint tendon-bone interface specimens were taken as normal control group after being sacrificed. The remaining 30 rabbits were used to make animal models of tendon-bone interface injury and then randomly divided into experimental and model groups. Rabbits in the model group had no treatment, and those in the experimental group were treated with calcium phosphate cement II. RESULTS AND CONCLUSION: After repair with calcium phosphate cement II, the injured tendon-bone interface of rabbits was obviously restored, and the repair effect became better with time. The expression level of bone morphogenetic protein 2 was also increased accordingly. The maximum tensile strength and the maximum stiffness of the injured tendon-bone interface were obviously increased. These results demonstrate that calcium phosphate cement II combined with recombinant human bone morphogenetic protein has good osteoinductive and repair effect in repair of tendon-bone interface injury.

Objective To investigate the expression of PED/PEA-15 mRNA and protein in esophageal carcinoma tissue and their clinical significances.Methods The expression of PED/PEA-15 mRNA was detected by RT-PCR,and the expression of PED/PEA-15 protein was measured by immunohistochemistry in 50 cases of esophageal carcinoma,50 cases of corresponding paracarcinoma tissue,and 50 cases of corresponding normal esophageal tissue.Results The expression of PED/PEA-15 mRNA was 1.14±0.49 in esophageal carcinoma,which was significantly higher than that in para-carcinoma tissue (0.59±0.31) and normal esophageal carcinoma tissue (0.53±0.22) (F =44.085,P ＜ 0.001).The immunohistochemistry results showed that PED/PEA-15 protein expression was significantly higher than that in para-carcinoma tissue and normal esophageal tissue (x2 =36.967,P ＜ 0.001; x2 =26.272,P ＜ 0.001).The expression of PED/PEA-15 mRNA and protein were significantly associated with pathological grade,clinical stage of esophageal carcinoma (P ＜ 0.05),but were not significantly correlated to the age of onset,gender,pathological types (P ＞ 0.05).Conclusion The expression of PED/PEA-15 mRNA and protein are increased in esophageal carcinoma,which may play an important role in the occurrence and development of esophageal carcinoma.

Objective To investigate the diagnosis value of p16 combined with Ki67 protein in cervical lesions.Methods Totally 1 542 women with previous liquid-based cytology smear result of abnormality underwent a colposcopy-directed biopsy excision procedure.Biopsy specimens were detected by p16 and Ki67 immunostaining alongside hematoxylin and eosin (H&E) staining.A four-semiquantitative class was used to describe the immunohistochemical results.Results Biopsy results revealed 1 542 women included 473 women with negative for dysplasia (NEG),629 women with cervical intraepithelial neoplasia (CIN) Ⅰ,206 women with CIN Ⅱ,206 women with CINⅢ and 28 women with cervical squamous cell carcinoma (SCC).The averageage of this study population was 34.47 years.CINs mainly occurred in women aged 20-29 years and 30-39 years.The positive rates of p16 in NEG,CIN Ⅰ,CIN Ⅱ,CINⅢ and SCC were 15.22％,60.25％,98.06％,99.51％,100.00％ respectively,and the positive rates of Ki67 were 12.05％,63.12％,96.12％,98.06％,100.00％ respectively.p16 expression and Ki-67 expression significantly increased with disease progression (p16:r =0.758,P =0.000 ; Ki67:r =0.773,P =0.000).Expression level of p16 was positively related with Ki-67 (r =0.774,P =0.000).The positive expression rates of p16 and Ki-67 of NEG were significantly lower than those of CIN and SCC (p16:x2 =1 127.46,P =0.000;Ki67:x2 =1 316.85,P =0.000).The positive expression rates of p16 and Ki-67 were markedly higher in CIN Ⅰ than those in CINⅡ,CINⅢⅢ and SCC (p16:x2 =500.19,P =0.000;Ki67:x2 =603.23,P=0.000).Conclusion Women aged 20-39 years are key subjects for cervical cancer screening.p16 and Ki67 immunohistochemistry is important in the ancillary diagnosis of cervical lesions.

Objective To evaluate the quality of intraoperative wake?up test in the patients undergoing scoliosis correction surgery under etomidate?based anesthesia. Methods Thirty patients of both sexes, aged 13-32 yr, weighing 40-65 kg, of ASA physical statusⅠorⅡ, undergoing elective scoliosis correction surgery, were randomly assigned into etomidate group ( group E, n=15 ) or propofol group (group P, n=15) using a random number table. Anesthesia was induced with etomid 0.3 mg∕kg (group E) or propofol 2mg∕kg ( group P ) injected intravenously, midazolam, fentanyl and rocuronium. The patients were mechanically ventilated after naso?tracheal intubation. Etomidate 0.6-1. 2 mg · kg-1 · h-1 and propofol 8- 10 mg·kg-1 ·h-1 were infused intravenously during surgery in E and P groups, respectively. Both remifentanil and cisatracurium were used for maintenance of anesthesia in the two groups. Cisatracurium infusion was stopped before wake?up test. The infusion rate of propofol was adjusted to 4 mg·kg-1 ·h-1 at 15 min before wake?up test. After the scoliotic angle was corrected, infusion of etomidate and propofol was stopped, and the infusion rate of remifentanil was adjusted to 0.025μg·kg-1 ·min-1 in both groups. The wake?up time was recorded, and the quality of wake?up was assessed. Mean arterial pressure (MAP) and heart rate were recorded before anesthesia ( T0 ) , immediately before the patients were awakened ( T1 ) , when the patients responded to commands from doctors ( T2 ) , and after anesthesia was deepened ( T3 ) . At T0 , the end of surgery ( T4 ) , and 24 h after surgery ( T5 ) , blood samples were collected from the internal jugular vein for determination of plasma cortisol concentrations. Results The patients were awakened successfully in the two groups, and there were no significant differences in the wake?up time, quality of wake?up, and MAP, HR and plasma cortisol concentrations at each time point between the two groups. MAP and HR were significantly higher at T2 than at T0 in the two groups. MAP and HR were within the normal range during wake?up test, and no patients developed severer cardiovascular events in the two groups. Conclusion Etomidate?based anesthesia provides better quality of intraoperative wake?up test in the patients undergoing scoliosis correction surgery, which is similar to that of propofol?based anesthesia.