Objective To investigate the knowledge,attitudes and practices of higher vocational college students related to H7N9,in order to provide evidence for health education in colleges.Methods Using cluster random sampling method,a total of 986 students were investigated by self-administered questionnaires.Results The awareness of H7N9 was different among genders and grades.Schoolgirls and students in grade two had a better knowledge of H7N9.About 30.93 percent of students were nervous and afraid of H7N9,among whom schoolboys had a higher percentage than schoolgirls.Most students got the information of H7N9 by mobile-phones and computers.Conclusions Students of higher vocational college need a deeper education in the knowledge of H7N9,targeted education should be carried out to cultivate healthy behavior and promote mental and physical health of students.

BACKGROUND:Previous studies have found that human platelet-derived growth factor-B (PDGF-B)-transfected gingival fibroblasts are capable of rapid proliferationin vitro, which can secrete platelet-derived growth factor BB proteins. OBJECTIVE:To explore the ability of PDGF-B-modified gingival fibroblasts in the acelular dermal matrixin vivo to form periodontal tissue engineering compound. METHODS: Gingival fibroblasts from Beagle dogs transfected with or without PDGF-B gene were implanted into the acelular dermal matrix. Cel growth on the acelular dermal matrix was observed. PDGF-B gene-transfected gingival fibroblasts/acelular dermal matrix composite (experimental group), gingival fibrobalsts/acelular dermal matrix composite (control group) and acelular dermal matrix (blank group) were implanted subcutaneously into the nude mice, respectively. At 2, 4, 8 weeks after implantation, skin tissues were taken and observed histologicaly. RESULTS AND CONCLUSION: PDGF-B gene-modified gingival fibroblasts and non-transfected gingival fibroblasts both grew and proliferated wel in the acelular dermal matrix. At 8 weeks after implantation, in the blank group, the surrounding cels largely entered into the acelular dermal matrix, but produce less new colagen fibers, and the cels only grew on the original colagen scaffold; in the control group, a great amount of colagen fibers formed, the original colagen fibers in the acelular dermal matrix were replaced by newly formed colagens, but the original colagen structure was reserved; in the experimental group, a large scale of permineralization formed, and mineralized nodes were arranged along the original colagen scaffold. These findings indicate that PDGF-B gene modified gingival fibroblasts can acquire osteoplastic abilities in the acelular dermal matrix in vivo.

Objective To investigate the the clinical effect and immune regulatory mechanism of red-blue light combined with Niuhuang Shangqing capsules for the moderate-severe acne.Methods A total of 180 patients with moderate to severe acne treated in People's Hospital of Nanhai District in Foshan City from June 2014 to June 2016 were randomly divided into 2 groups with each group 90 patients. The control group was treated with red and blue light, and observation group was treated with the combination of red and blue light andNiuhuang-Shangqingcapsules. The levels of SP(Substance P), IL-1 and IL-6 in peripheral blood were observed and analyzed. The recurrence rates and adverse events were observed.Results After treatment, the SP (657.4 ± 36.6 pg/mlvs.799.9 ± 60.2 pg/ml,t=19.188), IL-1(61.8 ± 24.7pg/L vs.92.1 ± 23.5 pg/L,t=8.431), IL-6 (38.7 ± 10.3pg/mlvs.66.7 ± 14.1pg/ml, t=12.421) of the observation group were significantly better than those of the control group (allPs<0.01). The total effect rate of the observation group were 91.11% (82/90), which were significantly higher than 70.00% (63/90) of control group (χ2=12.804,P<0.01). Conclusions The Red-blue light combined withNiuhuang-Shangqing capsules for treating moderate-severe acne, has significant effect and can reduce the serum levels of SP, IL-1 and IL-6, with fewer adverse events and lower recurrence rates. They can be used as a safe and effective treatment of acne.

Objective To explore the application value of platelet parameters detection in early diagnosis of breast cancer.Methods Platelet parameters of intravenous blood from 103 breast cancer patients and 117 fibroadenoma patients within 24 hours of admission between January 2015 and December 2015 were collected and retrospectively analyzed,including platelet count(PLT),plateletcrit(PCT),mean platelet volume(MPV),mean platelet component concentration(MPC),mean platelet component mass (MPM),platelet distribution width(PDW),and compared with control group of 100 healthy women.The diagnostic efficiency of platelet parameters were assessed using receiver operating characteristic(ROC) curve.Results PLT and PCT in breast cancer group and fibroadenoma group were significantly higher than those in control group(P＜0.01);MPC,PMM and PDW were significantly lower than those in control group(P＜0.01);MPV had no significant statistically difference(P＞0.05).The levels of MPC in breast cancer group were obviously lower than that in fibroadenoma group(P＜0.01).The diagnostic efficiency of MPC in breast cancer had the highest area under curve(AUC=0.835).While the cutoff value of MPC was 249.5 g/L,sensitivity and specificity were 82.5 ％ and 73.6 ％,respectively.Conclusion The detection of platelet parameters,especially MPC,have certain application value in early diagnosis of breast cancer.

Objective To investigate the clinical efficacy of photodynamic therapy with red and blue light in the treatment of facial acne. Methods Ninety-two cases of facial acne in dermatology outpatient hospital were randomly divided into the test group and the control group, with 46 cases in each group. Patients in the test group received the photodynamic therapy, and patients in the control group received red plus blue light treatment for eight weeks, respectively. Results Before treatment, patients in the test group and the control group had no significant differences in acne, papules, pustules, nodules, cysts and gags score. After 8-week treatment, the comedones, papules, pustules, nodules cyst number, gags score of patients in the test group were significantly less than or lower than those of patients in the control group (P < 0.05, respectively). The healing rate was 84.78% in the test group, which was higher than that of 65.22%in the control group of (P<0.05). The total efficiency was 97.83%in the test group and 93.48% in the control group, with no significant difference. The adverse reaction rate was 10.87% in the test group and was 23.91% in the control group, with no significant difference. Conclusion The effect of photodynamic therapy for facial acne is better than red plus blue light treatment ,with a less incidence of adverse reactions.

Objective To analyse the relationship between T lymphocyte subsets and NK cells expression and dynamic changes in lung cancer patients 'peripheral blood and the occurrence and development of cancer,and investigate their clinical significances.Methods Flow cytometry was applied to detect 66 patients with lung cancer,60 patients with pulmonary tuberculosis and 60 healthy persons peripheral blood CD+3,CD+3CD+8,CD+3CD+4,Th/Ts,CD+16CD+56 expression.Lung cancer group peripheral blood CD+3,CD+3CD+8,CD+3CD+4,Th/Ts,CD+16CD+56 expression were also detected on 3rd,7th and 20th day before and after chemotherapy.Results Lung cancer group CD+3,CD+3CD+4,Th/Ts,CD+16CD+56 expression decreased significantly [(54.23±10.37)％,(34.23±8.03)％,1.35±0.20,(25.18±4.34)％] and had significant differences compared with pulmonary tuberculosis group [(63.09±9.19)％,(39.46±12.74)％,1.51±0.41,(26.45±3.96)％] and healthy group [(69.68±8.31)％,(42.31±13.29)％,1.89±0.48,(29.44±2.51)％](P ＜ 0.05),but CD+3CD+8 expression showed no significant difference(P ＞ 0.05).In chemotherapy group,comparing with before chemotherapy,remission group CD+3,CD+3CD+4,Th/Ts and CD+16CD+56 expression decreased significantly (P ＜ 0.01)on 3rd day after chemotherapy,while CD+3CD+8expression increased significantly(P ＜ 0.01).On 7th day,each index recovered to the level of before chemotherapy basically.On 20th day,CD+3,CD+3CD+4,Th/Ts and CD+16CD+56 expression increased significantly(P ＜ 0.05)compared with before chemotherapy,while CD+3CD+8 expression significantly decreased(P ＜ 0.05).Chemotherapy unease group had no significant difference (P ＞ 0.05).Lung cancer of stage Ⅲ A and Ⅲ B compared with stage Ⅰ A,and lymph node metastasis in N3 group compared with N0 group,CD+3,CD+3CD+4,CD+3CD+8,Th/Ts and CD+16CD+56 expression had significant differences (P ＜ 0.05).Compared with their pathological types,each index had no significant difference(P ＞ 0.05).Conclusion Monitoring the peripheral blood T lymphocyte subsets and NK cells dynamic of lung cancer patients can guide the clinical diagnosis and treatment,and contribute to the assessment of immune function.

Objective To provide applied anatomic data for relevant operations of blood vessels of perisacral promontory(BVPSP). Methods The composition of BVPSP including origin, course, diameter of the middle sacral vessels, the distance between the sacral promontory and the sacral 1 transverse trunk were observed on 37 adult cadavers. Result The BVPSP is composed of the common and internal iliac vessels, the superior segment of the middle sacral vessels and the sacral 1 transverse trunk. Middle sacral artery comes from abdominal aorta. Middle sacral veins are thin walled without valves. The average diameter of middle sacral artery and vein is 1.02 mm and 2.53 mm respectively. The distance between the sacral 1 transverse trunk and the sacral promontory is 5.75 mm. Conclusion The composition of BVPSP, especially middle sacral veins, plentiful vascular anastomosis are the anatomical basis leading to massive hemorrhage in the relevant operations.

Objective To compare the prognosis of different surgical procedures and to find the relatively safe and effective treatment for severe jejunoileal atresia(sJA).Method From January 2007 to June 2018,children with sJA receiving different surgical procedures in our hospital were retrospectively reviewed.Their clinical data were analyzed,including the survival rate,complication rate,unplanned re-operation rate and postoperative nutritional status.Result A total of 130 patients were enrolled in this study.According to the different types of surgical procedures,the patients were assigned into primary anastomosis group (58 cases,44.6％),Mikulicz double barrel ileostomy group (17 cases,13.1％) and Bishop-Koop anastomosis group (55 cases,42.3％).The overall mortality rate was 6.2％ (8/130).No significant differences existed in mortality rates among the three groups (P＞0.05).The incidences of gastrointestinal complications in primary anastomosis group (70.6％,12/17) and Mikulicz group (70.6％,12/17) were both higher Bishop-Koop group (34.5％,19/55),the differences were statistically significant (P＜0.05).The unplanned re-operation rates were 34.5％ (20/58) in the primary anastomosis group and 17.6％ (3/17) in the Mikulicz group,both higher than the Bishop-Koop group (3.6％,2/55),the differences were also statistically significant (P＜0.05).Multivariate analysis showed that the risk of complications in the primary anastomosis group (OR=3.434,95％CI 1.392～8.471) and Mikulicz group (OR=5.933,95％CI 1.467～23.991) were higher than the Bishop-Koop group.The risk of unplanned re-operation in the primary anastomosis group was 12.422 times as the Bishop-Koop group (95％CI 2.535～60.877).No significant differences existed between the Mikulicz group and the Bishop-Koop group in the risk of unplanned re-operation (P＞0.05).The weight for age (Z-score) in the Bishop-Koop group (-1.4,95％CI-2.0～-0.8) at the stoma closure time was better than the Mikulicz group (-3.2,95％CI-4.4～-2.0),the difference was statistically significant (P＜0.01).Conclusion Bishop-Koop anastomosis has lower complication rate and lower unplanned re-operation rate in the treatment of sJA.The nutritional status of children who received Bishop-Koop anastomosis is better than Mikulicz double barrel ileostomy at the stoma closure time.Bishop-Koop anastomosis is relatively safe and effective for sJA patients.

Objective:To explore the complications and nutritional outcomes of Home Enteral Nutritional (HEN) in newborn surgical patients.Method:The medical records of neonates with HEN after surgery between 2017 and 2020 were retrospectively reviewed and complications of HEN and the nutritional status before and after HEN were analyzed.Results:A total of 66 neonates were included. The average gestational age at delivery and birth weight were (35.7 ± 3.0) weeks and (2426 ± 709) g, respectively. Diagnoses were mainly congenital esophageal atresia and intestinal diseases, such as intestinal atresia, intestinal torsion and necrotizing enterocolitis. The median age at HEN initiation was 92 (50, 112) days and HEN duration was 64 (41,95) days. HEN was conducted with tube feeding, with 14 patients (21.2%) through gastrostomy, 52 (78.8%) through nasal feeding tube, 20 (30.3%) through intermittent bolus infusion and 46 (69.7%) through continuous infusion. As for the formulas, 19 patients (28.8%) were given whole protein formula, 33 (50%) extensively hydrolyzed formula and 14 (21.2%) free amino acid-based formula. During the follow-up, 10 patients (71.4%) in gastrostomy group experienced 18 cases of catheter-related complications, including accidental removal (6 patients, 42.8%), catheter displacement (4 patients, 18.6%) and excessive granulation tissue at the gastrostomy site (4 patients, 18.6%). In nasal tube feeding group, 14 patients (26.9%) experienced 21 cases of catheter-related complications, including accidental tube removal (19 cases in 12 patients, 23.1%) and tube breakage (2 patients, 3.8%). Both the weight for age Z score and the height for age Z score were improved after HEN.Conclusions:HEN can help to improve the nutrition status in postoperative neonates. Management of catheter-related complications is challenging and warrants team work to improve the outcome of HEN.

Objective:To study the incidences of postoperative complications and nutritional status following different timings of stoma reversal in necrotizing enterocolitis (NEC).Method:From January 2017 to December 2019, NEC patients receiving enterostomy surgery and later stoma reversal in our hospital were retrospectively analyzed. They were assigned into three groups according to the timing of stoma reversal: early group (reversal within 8 weeks of stoma formation), middle group (reversal at 8~12 weeks from stoma formation) and late group (reversal after 12 weeks from stoma formation). Weight-for-age-Z-score (WAZ) was used to evaluate nutritional status.Result:A total of 56 infants were enrolled, including 6 cases in the early group, 11 cases in the middle group, and 39 cases in the late group. The gestational age and birth weight were (33.4±3.4) weeks and (1 894±640) g, respectively. The median age of stoma formation and the interval between stoma formation and reversal were 16.5 (8.0, 28.2) days and 94.0 (76.5, 126.5) days. No significant differences existed on gestational age, birth weight, age of stoma formation and complications of stoma reversal among the three groups ( P>0.05). The incidence of growth retardation (WAZ<-2) was 14.3% at stoma formation, and significantly increased to 62.5% at stoma reversal ( P<0.05). The WAZ at stoma reversal in early, middle and late groups were (-3.2±1.9), (-3.0±1.6) and (-2.3±1.5), without significant differences( P>0.05). The WAZ gradually increased to (-0.7±1.2), (-0.1±2.0) and (-0.1±0.8) at 42~48 weeks after reversal, respectively. Conclusion:The timing of stoma reversal may not influence the complications of reversal. Growth retardation are common in NEC infants with stoma formation and stoma reversal may improve the nutritional status of the infants. Early reversal of stoma is suggested to improve the nutritional status of patients with poor weight gain after stoma formation.