Objective : To investigate the injury characteristics among primary and middle school students in Panyu District, Guangzhou City, so as to provide the evidence for developing the strategies for prevention and control of injuries. Methods: The data of 6 to 18 years old primary and middle school students with initial diagnosis of injury at Panyu District Central Hospital from 2014 to 2019 were collected. The basic characteristics of injury cases, the causes, time and place of injury development were analyzed by a descriptive epidemiological method. Results: Totally 10 833 primary and middle school students with injury were reported in Panyu District from 2014 to 2019, including 7 401 boys and 3 432 girls, with a boy/girl ratio of 2.16∶1. The injury predominantly occurred in primary school students (6 903 cases, 63.72%). The causes of injury mainly included fall (4 457 cases, 41.14%), animal injury (2 593 cases, 23.94%), blunt injury (1 682 cases, 15.53%), knife/sharp instrument injury (923 cases, 8.52%) and traffic injury (731 cases, 6.75%). The place of injury development mainly included home (4 267 cases, 39.39%), school and public place (3 184 cases, 29.39%), and road/street (1 854 cases, 17.11%). The injury predominantly occurred from August to October (3 289 cases, 30.36%), and the activities at the time of injury mainly included leisure activities (3 860 cases, 35.63%), life activities (2 662 cases, 24.57%) and sports (1 929 cases, 17.81%). The characteristics of injury mainly included contusion/abrasion (4 528 cases, 41.80%), sharp instrument/bite/open injury (4 019 cases, 37.10%) and fracture (871 cases, 8.04%), and the upper limb was the main injury site (3 552 cases, 32.79%). There were 9 877 cases with mild injuries (91.18%), and 10 451 cases left hospitals after seeing a doctor (96.47%). Conclusions Fall is the main causes of injury among primary and middle school students in Panyu District, and boys and primary school students are high-risk groups for injury. Family prevention should be emphasized, and health education pertaining to injury should be intensified among students during the long holidays and leisure activities.

Objective To investigate the effect of Fillet flap and postoperative pressure combined with magnet pieces and triamcinolone acetonide injection therapy for keloid in aural region.Methods From January 2009 to January 2011,87 patients (102 side ears) with keloid at the aural region were treated.Fillet flap repaired for keloid in aural region,pressure treating by magnet pieces began at 14 days after operation,and continued for more than one year.Triamcinolone acetonide injection therapy began 1 months after operation if keloid recurrence tendency.Results After operation,80 patients (94 lateral ears) healed by first intention.Hematoma under flap appeared in 7 patients (8lateral ears),and healed by changing dressings.And 87 cases (102 lateral ears) were followed up for 1 year.The effect of operation and pressure therapy group and operation,pressure and injection therapy group was significantly higher than operation group,with statistically significant differences.Effect of operation,pressure and injection therapy group was higher than that of operation and pressure therapy group,but there was no significant difference.Conclusions Fillet flap and postoperative pressure combined with magnet pieces and triamcinolone acetonide injection therapy can effectively treat aural region keloids.

Objective To investigate the effect of continue nursing care post-discharge on the treatment effectiveness of gastric ulcer in active phase, and to facilitate the nursing quality. Methods A total of 163 patients with gastric ulcer were divided into control group including 80 cases and observation group including 83 cases randomly by hospitalization order. Routine nursing care was administrated on the two groups of patient's duration of hospital stay equally, but continue nursing care was administrated on the observation group patients exceptionally. The treatment outcome and intervention effect of the two groups were compared at the end of study. Results The overall cure rates of the control the observation group patients were 63.75%(30/80) and 81.93%(68/83), the eradication rates of helicobacter pylori (Hp) were 86.25%(69/80) and 96.39%(80/83), the medication compliance scores of Morisky were 3.69 ± 1.34 and 6.71 ± 1.57, the quality scores of life instruments for chronic were 67.81 ± 7.10 and 86.34 ± 6.83 respectively at the end of follow-up period. There were significant differences in the above indicators (χ2=6.830,5.330,t=13.199,16.977,P<0.05 or 0.01). Kaplan-Meier analysis showed that the cure period of the observation group was significantly shorter than that of the control group (χ2=20.446,P<0.05). Conclusions The continue nursing care post-discharge has positive effect on the treatment of active gastric ulcer, and it should be recommended in clinical application.

Objective To investigate the relationship of the expression of phosphatidylinositol-3-kinase(PI3K)subunits,P85 and P110 to the pathogenesis of psoriasis.Methods Immunohistochemical staining for P85 and P110 was performed in the tissue specimens from patients with psoriasis(n=30),chronic dermatitis(n=20),seborrheic keratosis(n=20),squamous cell carcinoma(n=20),basal cell carcinoma(n=30)and normal human controls(n=10).The absorbance of immunostained tissue was quantified with image analysis system (Q550CW,Leica,Manheim,Germany).Statistical analysis was carried out by ANOVA,Results Among these groups,a significant difference was observed in the expression level of P110 in the epidermis(F=35.64,P＜0.01),as well as in that of P85(F=59.98,P＜0.01)and P110(F=323.23,P＜0.01)in the lymphocytes infiltrating the lesion.Increased expression of P110 was found in the epidermis of psoriatic lesions compared with the lesions in the other disorders,whereas no significant difference was noticed among the other disorders.In the case of P85 and P110 expression in the lesion-infiltrating lymphocytes infiltrating the lesion,psoriasis and squamous cell carcinoma significantly differed from the other disorders,while no difference was observed between psoriasis and squamous cell carcinoma (P＞0.05).Conclusions The high expression of P110 might be closely correlated to the hyperproliferation of keratinocytes;but filrther study is needed to clarify the relationship of increased expression of P85 and P110 to the activation and proliferation of lymphocytes in psoriatic lesions.

Objective To evaluate the effect of the distal humerus extremity comminuted fracture treated by double plates through oleeranon osteotomy. Method Twenty-eight patients with humerus extremity comminuted fractures were fixed by double plates through olecranon osteotomy followed by early functional exercise. Results All the cases were followed up 9-31 months. The curative effect was assessed by the method of modified Cassebaum rating system. The operation was excellent in 10 cases, good in 12 cases, fair in 5 cases, bad in 1 case. The excellent and good rate was 78.57%(22/28). Conclusion Treatment of humerus extremity comminuted fractures by double plates through olecranon osteotomy followed by early functional exercise are excellent with satisfactory functional recovery.

Anemia, Hemolytic, Congenital ; etiology ; Female ; Hepatitis ; complications ; Humans ; Infant ; Syndrome

Objective To investigate the relationship between bacteria biofilm and bacterial culture in patients with chronic rhinosinusitis (CRS). Methods Ninety patients with CRS were enrolled in the study. Five patients with deviation of nasal septum and 10 healthy subjects served as controls. Mucosa of uncinate process or near the ostium of the maxillary sinus was obtained during endoscopic sinus surgery. All specimens were processed for bacterial culture and scanned by electron microscopy. Pearson test was performed to analyze the relationship between the presence of bacterial biofilm and the results of bacteria culture. Results The scanning electron microscopy showed bacterial biofilms in 64 (71.1%) out of 90patients with CRS, while the positive rate of bacteria culture in the study group was 66.7% (60/90). No bacterial biofilm and bacterium was detected in the control group and 26 culture-negative individuals in study group. Pearson correlation analysis showed a statistically association between bacterial biofilm and bacterial culture in CRS ( r = 0. 901, P = 0. 000). Conclusion Positive results of bacteria culture are highly correlated with the presence of bacterial biofilm in CRS patients.

A new HPLC-UV technique for the separation and analysis of 10 monosaccharides achieved within 13.5 min using 1-phenyl-3-methyl-5-pyrazolone (PMP) as the labelling molecule of the reductive monosaccharides has been established by combining common high performance liquid chromatography-UV and C18 column. The established technique was applied to the quantification of the monosaccharide components in extract of Silybum marianum. The results showed that the tested 10 monosaccharides as PMP derivatives were baseline separated under the HPLC conditions proposed. It was confirmed that Silybum marianum extract was composed of mannose, rhamnose, glucuronic acid, galacturonic acid, glucose, xylose, galactose and arabinose with the molar ratio of 0.66:0.84:0.58:1.0:1.6:0.69:2.7:4.8. Quantitative recoveries of the compositional monosaccharides separated from the extract were in the range of 92.4%-104.0%, and the RSD values fell within 0.68%-3.81%. The results demonstrated that the proposed HPLC method was simple, rapid, convenient, and precise, and it was applicable to the analysis of the compositional monosaccharides of Silybum marianum extract.

AIM : To establish a HPLC method for simultaneous determination of rutin and naringenin-7-o-glucoside in Lysimachia clethroide Duby.METHODS: Using Diamonsil C_(18) (4.6 mm×250 mm,5 μm) as analytical column.The mobile phase consisted of acetonitrile (A) and 0.1% phosphoric acid ( B ) with gradient elution : 0～18rain,83%～80% B; 18～30 min,80%～86% B.The detection wavelength of rutin and naringenin-7-o-glucoside was at 254 nm and 281 nm,respectively.The flow rate was 1.0 mL/min; Column temperature was at 35 ℃.RESULTS: A better separating effect was obtained with the HPLC gradient elution method.The linear calibration curve of rutin and naringenin-7-o-glucoside were obtained in the concentration range of 1.00～48.00 μg/mL( r =0.999 3 ) and 0.64 ～ 40.72 μg/mL( r = 0.999 8 ),respectively.CONCLUSION : The HPLC method is accurate,simple and can be used to determine the contents of rutin and naringenin-7-o-glucoside in Lysimachia clethroide Duby simultaneously.

Objective Non-alcoholic fatty liver ( NAFL) is a metabolic disease and levocarnitine can be used to improve the energy metabolism of the patient .This study aimed to evaluate the clinical efficacy of levocarnitine in the treatment of NAFL . Methods We retrospectively analyzed 85 cases of NAFL treated by lifestyle intervention (control group, n=40) or by lifestyle intervention +levo-carnitine medication (medication group, n=45).In addition to lifestyle intervention, the patients in the medication group received oral levocarnitine at 10 mL tid for 4 weeks followed by a reduced dose of 10 mL bid for another 8 weeks. Results Twelve weeks after treat-ment, 37 cases (82.2%) in the medication group showed remarkable improvement and the other 8 failed to respond.In the control group, 23 cases (57.5%) were improved and 17 cases remained unimproved .There were statistically significant differences in the rate of therapeutic effectiveness between the two groups of patients (P<0.01).No adverse effects were observed during the levocarnitine medi-cation. Conclusion Lifestyle intervention +levocarnitine medication can improve NAFL .