1.STUDY ON THE MORPHOLOGY, ANTICOAGULANT FUNCTION AND FIBRINOLYTIC ACTIVITY OF CULTURED MESOTHELIAL CELLS OF RAT
Ming YANG ; Ming ZHANG ; Zhengxing CHENG ;
Acta Anatomica Sinica 1957;0(04):-
Objective To observe the structure feature of cultured mesothelial cells, determine its anticoagulant and fibrinolytic activity, and provide a basis for selection of artificial vascular prostheses coating cells. Methods The greater omenta, aortae and subcutanenous connective tissue of SD rats have been taken for mesothelial cell, endothelial cell and fibroblast culture. The cultured mesothelial cells have been observed by light microscopy and electron microscopy. The 6 keto PGF 1? (the metabolite of prostacyclin)concentrations in medium were measured by rodioimmunoassay, Tissue plasminogen activator(t PA) activity was detected by chromogenic assay. Results The cultured mesothelial cells have many structure feature similar to endothelial cells. The average concentration of the 6 keto PGF 1? in mesothelial cell culture was higher than that in endothelial cells and fibroblasts culture, the t PA activity in mesothelial cells culture was also higher than that in fibroblasts, but there wasn't a significant difference between mesothelial cells and endothelial cells.Conclusion Mesothelial cells have similar structure and functions comparing with endothelial cells. It may be an ideal coating lining for artificial vascular impants. [
2.Protective effect of anthocyanidin extracts on light-induced retinal functional and structural damage in rat
Qiang, CHENG ; Zuo-ming, ZHANG ; Lei, ZHANG
Chinese Journal of Experimental Ophthalmology 2013;(2):110-116
Background Light leads to the damage of retinal function and structure by promoting the reproduction of radicals and lipid peroxides when retina is exposed to an intense light environment for a long time.It is necessary to study how to protect the retina against light-induced injury in ophthalmology.Objective The aim of this study was to evaluate the effect of anthocyanidin extracts in preventing retinal photic damage.Methods Eighteen clean male Sprague-Dawley (SD) rats were randomly assigned to normal saline group,anthocyanidin group and mixed (hydrogen-rich saline (HRS) + anthocyanidin,1:1 in volume) group and 6 rats for each.The electroretinogram (ERG) with international standardized 5 items was recorded from all the rats before experiment.Normal saline,anthocyanidin extracts or mixed solution of 5 ml/kg were intraperitoneally injected in the three groups,respectively,for consecutive 5 days.Then the diffused light with the luminance intensity of (5000±300)lx was used to irradiate the right eyes of the rats for consecutive 3 hours during 19:00 through 7:00 in a device made by our laboratory,and the left eyes were covered at the same time.The ERG was repeatedly recorded 5 days after light irradiation.The rats were sacrificed at the end of the experiment and retinal sections were prepared for the histopathological examination.The functional and structural changes of retinas were compared among the different groups.The use of the rats followed the Statement of ARVO.Results The differences of rat body weight were not statistically significant among the three groups (before experiment:F =0.472,P =0.841 ; after experiment:F =0.658,P=0.762).No any significant difference was found in scotopic 0.01 ERG b wave,scotopic 3.0 ERG a and b waves,scotopic 3.0 oscillatory potentials,photopic 3.0 ERG b wave and 3.0 flicker P1wave between the left eyes and the right eyes in the three groups before experiment (P>0.05).The amplitudes of various waves of ERG were significantly declined in the right eyes compared with the left eyes (P<0.05).The mean differential values of scotopic 0.01 ERG b wave,scotopic 3.0 ERG a and b waves,scotopic 3.0 oscillatory potentials were significantly different(F =4.594,P=0.029; F=3.834,P=0.037; F=12.823,P=0.000; F=3.976,P=0.032),but those in photopic 3.0 ERG b wave were not statistically significant (F =1.488,P =0.259).Compared with the normal saline group,the differential values of scotopic 0.01 ERG b wave,scotopic 3.0 ERG a and b waves,scotopic 3.0 oscillatory potentials were all reduced in the anthocyanidin group and mixed group (P < 0.05).The cells of outer nuclear layer were decreased in the right eyes in the three groups compared with the left eyes,especially around the optic nerve head and the upside of the retina,with significant differences between them (P<0.05),and those in the anthocyanidin group and mixed group were significantly less than normal saline group (P<0.05).Conclusions Anthocyanidin has a protective effect on light-induced retinal damage of SD rats.The protective effect of anthocyanidin extracts is similar to the integrated effect of the mixed group.
3.Advances in the studies on cytokine and chemokine gene polymorphisms associated with uveitis
Cheng-Hong, LAN ; Ming-Zhi, ZHANG
International Eye Science 2008;8(12):2373-2375
·Uveitis is an inflammation of any or all parts of the uveal tract including the iris, ciliary body and the choroid. Despite current advances in diagnosis and management, visual loss occurs in 35%-45% of patients with uveitis. The etiopathogenesis of uveitis remains unknown; it may be associated with environmental and immunogenetic factors. Many studies have demonstrated polymorphisms in major histocompatibility complex (MHC) genes may determine involvement in uveitis. Recently polymor-phisms in non-MHC genes, including cytokine and che-mokine genes, have been reported to play important roles in the pathogenesis of uveitis. This article reviewed the advances in the studies on cytokine and chemokine gene polymorphisms associated with uveitis.
7.Clinical Characteristics of Norovirus infection with Acute Viral Diarrhea of Yangzhou City
Youjiang ZHANG ; Ming CHENG ; Jianguo HOU ; Jin ZHANG ; Qin XU
Journal of Modern Laboratory Medicine 2014;(5):80-82
Objective To investigate the clinical and epidemiological characteristics in 55 patients with Acute Viral Diarrhea caused by Norovirus.And provide basis for preventing and controlling the spread of the disease.Methods A total of 5 1 3 fe-cal samples of diarrhea cases from 3 surveillance hospitals in 2013 from January to December were collected,analyzed the clinical date and detected Norovirus useing RT-PCR.Results The number of Norovirus positive was 55,positive rate was 10.7%.There were significant differences between Norovirus infection and not infected patients for age (χ2=4.27,P<0.05),then there were no significant differences between Norovirus infection and not infected patients for gender,employ-ment,whether food pathogenic diseases (χ2=0.086~3.21,P>0.05).The clinical symptoms of acute gastroenteritis pa-tients caused by Norovirus infection was fever (χ2=4.6,P<0.05),there were no significant differences for diarrhea (≥5 times/day),bellgache,vomiting,nausea (χ2=0.139~3.636,P>0.05).Conclusion Norovirus is common pathogens of a-cute diarrhoea,which incidence is higher.Clinical symptoms alone is difficult to differentiate with other diarrheaphases.The confirmed diagnosis is depended on the etiology.
8.Effec evaluation of oral nursing with oral washing on patients with peroral endotracheal intubation
Liuhong XIAO ; Yane LI ; Ming ZHANG ; Jianying CHENG
Chinese Journal of Practical Nursing 2008;24(18):3-5
Objective We aimed to evaluatd the effect of oral nursing with oral washing on patients with peroral endotracheal intubation and discuss the appropriate oral nursing method for patients with patients with peroral endotracheal intubation. Methods We chose 150 patients with indwelling peroral endotracheal intubation after neurosurgery and divided them into the control group (73 cases) and the test group (77 cases). The test group received oral nursing with oral washing while the control group with routine oral nursing method. We compared the incidence of halitosis, the moist degree of oral cavity and the amount of the tooth fungus spot between the two groups. Results The incidence of halitosis and the amount of the tooth fungus spot in the test group were lower than those of the control group; The moist degree of oral cavity in the test group was higher than that of the control group, P<0.01. Conclusions Oral washing could effectively control halitosis, keep oral cavity moist and prevent the formation of tooth fungus spot.
10.Resection of the cholesteatoma combined brain abscess with the access of back wall of maxillary sinus under nasal endoscopy and navigation.
Hua ZHANG ; Xi-cheng SONG ; Chun-ming XIU
Chinese Journal of Otorhinolaryngology Head and Neck Surgery 2012;47(5):420-421
Adult
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Brain Abscess
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Cholesteatoma
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surgery
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Endoscopy
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Female
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Humans
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Maxillary Sinus
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surgery