Incised wounds were made in rabbits, and some of the wounds were dressed with chitosan, and others with gauze. After bleeding stopped, hemoglobin in dressings was measured to determine the hemostaic effect. Wounds were redressed, and healing process was studied histologically. The results showed that less Hb was detected in chitosandressing than in gauze. On day 9 after wounding, the content of granulation tissue and collagen formation in the chitosan dressed wounds was more than that in Vaseline gauze dressed group. It suggests that chitosan dressing is effective in hemostasis for incised wounds and may be helpful in wound healing process.

Objective To study comparatively the changes in epi th elial growth factor (EGF) and its receptor (EGFR) in injured intestine induced b y neutron and ?-ray irradiation in mice and their significance. Method s 350 male BALB/C mice were irradiated with neutron and ?-rays, and t hey were sacrificed at 6 and 12 hours and 1, 2, 3, 4, 5, 7, 10, 14, 21 and 28 da ys, respectively, after irradiation. Immunohistochemical method was employed to assess EGF and EGFR in the intestinal tissue of the mice. Results After the neutron radiation with 2.5Gy dosage, the expressions of EGF and E GFR in the cytoplasm of mucosa epithelial cells and crypt cells were obviously u p-regulated within 1 day, decreased after 1~2 days, increased again on 3~7 days , reached the peak value at the 5th day, and returned to normal values in 14 day s. Whereas EGF and EGFR were increased at 6 hours and progressively decreased fr om 12 hours up to 4 days after 4.0 and 5.5Gy neutron and 12Gy g-ray radiation . They were increased progressively within 3 days, reaching peak value on the 3r d day, and returned to normal values 5 days after 5.5Gy g-ray irradiation. Conclusions The expressions of endogenous EGF and EGFR showed diffe rent regularities after neutron and g-ray radiation, and they were involved in the pathologic courses of radiation damage and recovery of the intestine.

Objective: To collect the view of sex of contemporary colleg e studen ts. Methods: To provide questionnaire made by Chen Jialin to 12 00 college studen ts from three universities in Hangzhou, Zhejiang. 1130 of them (94%) were compl e ted and fit for study standard. Results: College students' view of sex tends to be more open but still had some controversy. The difference of views on topics s uch as the purpose of sex, illegal sex and chastity between boy students and gir l students was quite significant, while the students from urban and those from c ountryside shared similar view of sex. Conclusion: Sex educatio n is still at its primary step in Chinese college students.

0.05) during the experiment. The TC of middle dose GSPE group was marked ly different compared with that of normal group(P

Objective To explore the prevention and treatment effect and its mechanism of Xuebijing injec-tion combined with dexamethasone on rats' paraqnat-induced acute and chronic pulmonary injury.Method One hundred and twenty of male Wistar rats were randomly divided into six groups:nomud group(A),administrated with saline;model group(B)and treatment groups(group C,D,E,F)were given 20%PQ(100 mg/kg.ip),and 2 hours later the normal and model groups were administrated with the same volume of saline for treatment,rats in group C and group D received 1.25 g/kg and 2.5 g/kg Xuebijing injection respectively.rdts in group E received 25,ng/kg dexamethasone,rats in group F receired 2.5 g/kg Xuebijing injection combined with 2.5 g/kg dexamethasone,one time per day till to be killed,while rats killed at 28 d were treated for 7 days.At 2 d,3 d,4 d after poisoned,five rats in each group were killed,serum SOD,MDA level and arterial gas(at 3 d)were measured.At 28 d,the rest of rats were killed,and serum TGF-β1,lung tissure HYP were measured.The pathology of the lung tissue was ob-served at 3 d and 28 d in guoup A,B,F.Results Compared with group B,poisoning symptoms in the treatment groups were milder and serum.SOD,MDA,TGV-β1,lung tissure HYP level were better,arterial oxygen content were higer.Among treatment groups,the treatment effects in group F were the best,SOD and MDA of 3 d,HYP and TGF-β1 of 28 d in group B and F were respectively(37.47±13.00,91.86±21.35)nmol/mL;(11.34±3.07,5.63±1.58)nmoL/mL;(2.54±0.63,1.32±0.07)mg/g;(484.13±63.79,202.22±49.83)pg/mL.The difference was significant(P＜0.05).The pathology of the lung tissue showed that acute lung hemorrhage,edema or chronic pulmonary fibrosis in group F were milder than that of group B.Conclusions In early stage,Xuebijing injection combined with dexamethasone has a stronger ability to clear out oxidized free radical and inhibit lipid super oxidized reaction.This may ameliorate acute pulmonary blooding and edema.In later stage,they could ameliorate chronic pulmonary fibrosis by inhibiting TGF-β1 secretion and HYP generation.

Objective To evaluate the terminal segment of the intracranial vertebral artery (tICVA) fine and atherosclerotic lesions using high-resolution MRI (HRMRI) in order to guide endovascular interventional therapy.Methods From October 2015 to October 2016,4 patients with bilateral tICVA diagnosed with digital subtraction angiography (DSA) and admitted to Xuanwu Hospital,Capital Medical University were analyzed retrospectively.At the same time,time of flight (TOF) and black blood imaging were used.The bilateral tICVA imaging features in 4 patients were analyzed.Congenital dysplasia of vertebral artery and atherosclerotic lesions were identified.Results DSA revealed that bilateral tICVA fine or occlusion.HRMRI evaluation of the vascular wall structure showed that vascular dysplasia in 4 cases were all located on the right sides,showing no obvious thickening of the wall thickness,and the diameter was less than 1/2 of the contralateral side.One patient had atherosclerotic stenosis on the left and 3 had occlusion,showing local wall thickening,plaque formation,and resulting in the narrowing of the corresponding lumen and even occlusion.Three of the patients were treated with endovascular intervention.Conclusion HRMRI is helpful to differentiate hypoplasia in terminal intracranial vertebral artery and atherosclerotic stenosis or occlusion,identifying the dominant side of the vertebral artery and providing image basis for endovascular treatment of vertebral artery.

AIM:To examine the role and dynamic changes of mast cell(MC) and its subpopulations in simple and irradiated-wound of rats.METHODS:MC and its subpopulations were estimated using alcian blue-safranin (ABS)double staining RESULTS:(1)The total number of MC in two groups decreased coincidently on day 2 after wounding, and the total MC increased rapidly and reached maximal gradually on day 5 and 7 after wounding, the increment of MC remained consistently 28 day after wounding (2)Both mucosal MC( MMC) and Mix MC decreased obviously on day 2 after wounding, hereafter,they remained the low level all the time However, the CTMC kept in the high level after wounding (3)The Mix MC on day 5 and the total MC during day 5-15 after wounding were lower in irradiated group than in simple wound group CONCLUSION: MC and its subpopulations could delay the healing process of simple and irradiated wound

AIM: To establish rat chronic obstructive pulmonary disease(COPD) models by passive cigarette smoking plus intratracheal instillation of lipopolysacchride(LPS) or passive cigarette smoking only, which would be similar to the pathogenesis of human COPD. METHODS: 48 Wistar rats were randomly divided into 4 groups.(1) Healthy control I group( n =12), rats were bred 4 weeks;healthy control II group( n =12), rats were bred for 3 months. (2) Model group I ( n =12), 200 ?g lipopolysaccharide(LPS) was instilled intratracheally once for every two weeks and the rats were exposured to 5% of cigarette smoke, 0.5 h/d for 4 weeks.(3) Model group II(n=12),rats were exposed to 5% of cigarette smoke, 0.5 h/d for 3 months. The pathologic changes of airways and lung tissues, pulmonary function and blood gas analysis were determined. The airway wall lymphocytes and alveolar macrophages were counted. The cross areas of epithelial layer, smooth muscle layer and lamina propria of bronchi were measured. The hydroxyproline of lung tissue homogenates was determined by biochemistry method. RESULTS: The pathologic changes of airways and lung tissue of two models were similar to but milder than those of COPD patients(biopsy data). The collagen deposition and the cross areas of epithelial layer and smooth muscle layer in airway walls of two model groups were significantly increased than those of control groups( P

Objective To study the influence of pharmacy intravenous admixture servers(PIVAS)on human resource prioritized allocation.Methods We compared the time consumption and efficiency of drug dispensing as well as the human resource allocation before and after the establishment of PIVAS.The influence of PIVAS on the human resource allocation of nursing and pharmacy staff and work efficiency were analyzed.Results Nursing human resource were economized and we realized human resource prioritized allocation after the establishment of PIVAS.Conclusions Establishment of PIVAS facilitated the human resource prioritized allocation of nursing and pharmacy staff.It can promote the development of nursing cause and possesses wide application value.