3.Type 2 diabetes in MKR transgenic mice caused by skeletal muscle-specific double deficiency of IGF-1 and insulin receptors
Rong YU ; Xihua CHENG ; Wei HU
Chinese Journal of Diabetes 2008;0(07):-
Objective To examine the circulating glucose and body weight in the transgenic MKR mouse model who expressed dominant-negative IGF-1 receptor and insulin receptor in skeletal muscle leading to systemic insulin resistance and diabetes. Methods MKR mice were genotyped by PCR analysis of tail DNA.And in these mice we examined the circulating glucose and body weight once a week from 1 to 16 weeks of age, and the circulating insulin and glucose tolerance at age of two-month-old by using C57 mice as controls. Results The descendents of MKR mice kept hereditary feature. And these mice had hyperglycaemia from 3 weeks of age,and an increasing body weight slowly(P
5.Effect of tuftsin and its inhibitor on pancreas microcirculation in experimental acute pancreatitis
Yu CHENG ; Jishen YAN ; Wei ZHANG ; Li YU ; Jianfei LUO ;
Chinese Journal of General Surgery 2001;0(09):-
Objective To investigate the effect of tuftsin and its inhibitor on pancreas microcirculation in acute pancreatitis(AP). Methods Sprague Dawley (SD) rats were randomly divided into five groups. Murine AP model was produced by retrograde injection of 4% sodium taurocholate into pancreatic duct, tuftsin or its inhibitor was injected at a dosage of 75 ?g/kg. At the time of 0,3, 6, 12 h, pancreas was harvested for pathology of microthrombus. esults Microthrombus in control group was not different with that in tuftsin group; At the time of 3、6 and 12 h microthrombus in other 3 groups significantly increased than control group and tuftsin group; With time, microthrombus in AP group、AP+ tuftsin group and AP+inhibitor group increased steadily and statistically significant; Tuftsin inhibitor significantly decreased microthrombus at the time of 6、12 h.Conclusions In acute pancreatitis tuftsin deteriorated pancreas microcirculation, which could be partially reversed by the administration of tuftsin inhibitor.
6.Successful treatment of a patient with craniocervical penetrating injury by a steel bar.
De-zhi YU ; Jian-xin QIU ; Hong-wei CHENG
Chinese Journal of Otorhinolaryngology Head and Neck Surgery 2012;47(5):424-424
Adult
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Fluoroscopy
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Foreign Bodies
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therapy
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Humans
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Male
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Trauma, Nervous System
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therapy
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Wounds, Penetrating
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therapy
8.Observation on therapeutic effect of acupuncture combined with medicine on mild cognition disorders in patients with post-stroke.
Wei LI ; Yan-Hong CHENG ; Xiao-Gang YU
Chinese Acupuncture & Moxibustion 2012;32(1):3-7
OBJECTIVETo explore the curative effect and safety of acupuncture for mild cognitive disorders after stroke.
METHODSRandomized controlled trial was adopted and one hundred cases conforming to criteria were divided into a combined acupuncture and medication group (group A) and a medication group (group B), 50 cases in each group. The basic treatment of cerebrovascular disease was applied in two groups. The group A treated was with acupuncture at Baihui (GV 20), Shenting (GV 24) and Qucha (BL 4) etc. and oral administration of Nimodipine. In group B, Nimodipine was taken orally. The treatment lasted for 3 months, the scores of Mini-Mental State Examination (MMSE), modified Hasegawa Dementia Scale (HDS-R) and Barthel Index (BI) were observed before and after treatment in two groups.
RESULTSThe total effective rate in group A was 66.7% (32/48), which was superior to 30.4% (14/46) in group B (P < 0.05). The scores of MMSE, HDS-R and BI after treatment were apparently improved as compared with those before treatment in two groups (all P < 0.01). The improvements in group A were superior to those in group B (all P < 0.05). There was no adverse event reported during the treatment in two groups.
CONCLUSIONAcupuncture can improve activity of daily living and has significant effect in treating mild cognition disorders after stroke without adverse reactions.
Acupuncture Therapy ; Aged ; Cognition ; Cognition Disorders ; etiology ; psychology ; therapy ; Female ; Humans ; Male ; Middle Aged ; Stroke ; complications ; Treatment Outcome
9.Nano-hydroxyapatite film as a support to improve the proliferation of human umbilical vein endothelial cells
Guangcun CHENG ; Zhongya YAN ; Chunsheng LI ; Yu YAN ; Xiaoyong WEI
Chinese Journal of Tissue Engineering Research 2015;(12):1852-1857
BACKGROUND:A new type of nano-hydroxyapatite artificial mechanical heart valve has been developed using pulsed laser deposition technology at the Department of Materials, Hefei University and Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, China. OBJECTIVE:To investigate the compatibility of nano-hydroxyapatite artificial mechanical heart valve with human umbilical vein endothelial cels. METHODS:Human umbilical vein endothelial cels were in vitroisolated, cultured and passaged to the 2-4 generations, and then the cel suspension was inoculated onto the nano-hydroxyapatite artificial mechanical heart valve. After 3, 7, 12 days of culture, the cel growth on the artificial mechanical heart valve was observed under scanning electron microscope. In addition, the human umbilical vein endothelial cels were respectively cultured in room-temperature and high-temperature extract liquids of nano-hydroxyapatite artificial mechanical heart valve, high-density polyethylene and phenol solution extracts for 72 hours, and then, the proliferation of cels was detected by MTT method. RESULTS AND CONCLUSION:Under the scanning electron microscope, the human umbilical vein endothelial cels were fusiform- or polygon-shaped with protuberances adhered to the artificial mechanical heart value at 3 days of culture; the cels were stretched thoroughly and fused at 7 days of culture; and the cels were confluent to pieces that tightly overlaid the heart valve surface and the extracelular matrix was formed localy at 21 days of culture. Results from MTT test displayed that the nano-hydroxyapatite artificial mechanical heart valve had no cytotoxicity to the human umbilical vein endothelial cels, indicating a good cytocompatibility.
10.Expression of Notch pathway receptors and ligands in cutaneous malignant melanoma
Bai LIU ; Wanting YU ; Wei CHENG ; Xuebao SHAO ; Yiqun JIANG
Chinese Journal of Dermatology 2017;50(4):252-256
Objective To determine the expression of Notch pathway receptors (Notch1 and Notch4) and ligands (Jagged1 and Dll4) in cutaneous malignant melanoma (CMM) tissues,and to preliminarily explore the role of the Notch signaling pathway in the pathogenesis of CMM.Methods Immunohistochemical study was performed to determine the expression pattern and intensity of Notch1,Notch4,Jagged1 and Dll4 in 40 paraffin-embedded CMM specimens and 15 paraffin-embedded pigmented nevus specimens.Statistical analysis was carried out by chi-square test and Spearman rank correlation analysis with the SPSS 21.0 software.Results Notchl was detected in 31 (77.5%) of 40 CMM specimens,as well as in 3 of 15 pigmented nevus specimens,and the positive rates significantly differed between the two groups (x2 =15.281,P < 0.001).However,no significant difference in the expression intensity of Notch1 was observed between 18 in situ melanoma tissues and 22 invasive melanoma tissues (x2 =0.631,P =0.427).In addition,the positive rates of Notch4,Jagged1 and Dll4 were also significantly higher in the CMM group than those in the pigmented nevus group (all P < 0.05),and the expression intensity of Notch4,Jagged1 and Dll4 significantly differed between in situ and invasive melanoma tissues (all P < 0.05).In CMM tissues,the expression of Notch1 was positively correlated with that of Jagged1 (rs =0.350,P =0.027) and Dll4 (rs =0.562,P < 0.001),while the expression of Jaggedl was negatively correlated with that of Dl14 (rs =-0.734,P < 0.001).Conclusion Abnormality of the Notch signaling pathway may be involved in the pathogenesis of melanoma,but further researches are still needed to elucidate the detailed mechanism.