2.EXPERIMENTAL STUDY ON VISCOELASTIC PROPERTIES OF HEPATOCELLULAR CARCINOMA CELLS
Gang ZHANG ; Mian LONG ; Zezhi WU
Medical Journal of Chinese People's Liberation Army 2001;26(3):204-206
The viscoelastic properties of hepatocellular carcinoma (HCC) cells were measured by means of micropipette aspiration technique. Further,the authors studied the changes in viscoelastic coefficients by treating with colchicine and cytochalasin D. The results showed that the elastic coefficients of HCC cells were obviously higher than the corresponding value of hepatocytes. By treating with colchicine, the effects on viscoelastic properties of HCC cells were obviously different in ways and extents from those on viscoelastic properties of hepatocytes.,but the viscoelastic properties of hepatocytes by treated with cytochalasin D had the same trend of decreasing as those of HCC cells. These results represent the change in cytoskeleton structure and function among hepatocytes and HCC cells, this change might affect tumor cells invasion and metastasis.
3.EXPERIMENTAL STUDY ON VISCOELASTIC PROPERTIES OF HEPATOCELLULAR CARCINOMA CELLS
Gang ZHANG ; Mian LONG ; Zezhi WU
Medical Journal of Chinese People's Liberation Army 1982;0(03):-
The viscoelastic properties of hepatocellular carcinoma (HCC) cells were measured by means of micropipette aspiration technique. Further,the authors studied the changes in viscoelastic coefficients by treating with colchicine and cytochalasin D. The results showed that the elastic coefficients of HCC cells were obviously higher than the corresponding value of hepatocytes. By treating with colchicine, the effects on viscoelastic properties of HCC cells were obviously different in ways and extents from those on viscoelastic properties of hepatocytes.,but the viscoelastic properties of hepatocytes by treated with cytochalasin D had the same trend of decreasing as those of HCC cells. These results represent the change in cytoskeleton structure and function among hepatocytes and HCC cells, this change might affect tumor cells invasion and metastasis.
4.Correlation between Val279Phe, Ile198Thr mutation in lipoprotein-associated phospholipase A2 gene and cerebral infarction
Jian WU ; Xiong ZHANG ; Chenglin YUAN ; Hengzhong ZHANG ; Long YU
International Journal of Cerebrovascular Diseases 2011;19(6):437-441
Objective To investigate the correlation between the mutation in serum lipoprotein-associated phospholipase A2(Lp-PLA2) Ile198Thr, Val279Phe and cerebral infarction in Chinese Han population of Jiangsu Province. Methods One hundred fifty patients with cerebral infarction and 100 healthy controls in Chinese Han population of Jiangsu Province were recruited. The correlation between Val279Phe and Ilel98Thr mutation in Lp-PLA2 gene and cerebral infarction was analyzed using polymerase chain reaction and denaturing high performance liquid chromatography. Results The Val279Phe genotype and the mutant allele frequency in the cerebral infarction group were significantly higher than those in the control group (χ2 were 6. 31and 5. 32, respectively, all P <0. 05), and there was no significant difference between the Ile198Thr genotype and the mutant allele frequency in the control group (χ2 were 0. 039 and 0. 037, respectively, all P >0. 05). Conclusions The Val279Phe mutation in Lp-PLA2 gene may be a genetic risk factor for cerebral infarction in Chinese Han population of Jiangsu Province.
5.A Case-control Study for Smoking on the Risk of Acute ST-Segment Elevation Myocardial Infarction Morbidity in Different Gender and Age Population
Ni ZHANG ; Dingcheng XIANG ; Jinxia ZHANG ; Hua XIAO ; Liucheng LONG ; Yuanfeng WU ; Feng LONG
Chinese Circulation Journal 2016;31(9):858-861
Objective: To access the risk for smoking on morbidity of acute ST-segment elevation myocardial infarction (STEMI) at different gender and age population. Methods: A case-control study was conducted in 2026 STEMI patients and 2026 control subjects with matched gender and age (±2 years) in our hospital from 2010-01-14 to 2016-02-27. The relationship between smoking and STEMI morbidity was analyzed. Results: Smoking was an important risk factor for STEMI morbidity in male gender and it was negatively related to age, as STEMI in young male smokers (≤45 years): adjusted OR=7.000, 95% CI 4.235-11.570; in middle age male smokers (46-59 years):adjusted OR=5.296, 95% CI 3.904-7.185 and in elder male smokers (≥60 years): adjusted OR=4.686, 95% CI 2.860-4.751. Conclusion: Smoking is a major risk factor for STEMI morbidity, while it is different from age and gender; the young male smokers have the highest risk to suffer from STEMI.
6.The increase of carbon monoxide in recipients ameliorates isehemia/reperfusio.injury in a murine heart transplantation model
Songlin ZHANG ; Zongquan SUN ; Jiane FENG ; Long WU ; Li YU
Chinese Journal of Organ Transplantation 2010;31(3):157-161
Objective To examine whether the increase of carbon monoxide (CO) induced by oral methylene chloride (MC) administration in recipients before heart transplantation would protect heart grafts against isehemia/reperfusion (I/R) injury associated with transplantation and to explore the possible mechanism.Methods Inbred male Balb/c mice were used as donors and recipients to establish cervical heart transplantation model Recipients were treated with either MC (100 mg/kg or 500 mg/kg,per os)(group MC 100 mg,n=10;group MC 500 mg,n=12) or olive oil(0.15 ml,per os.group olive,n=10) 3 h prior to anesthesia.Age-matched norwlal mice served as controls (group N,n=5).The serum COHb and the CO content of myocardial tissue were measured at 0,1,3,6,12,24 h after oral MC administration.Half of recipients were killed at 3 and 24h after transplantation for senum or cardiac graft samples.The serum cTnI levels,the mRNA levels of TNF-α,IL-10,Bcl-2,Bax.the protein levels of NF-κB and the ultrastructures of myocardium were examined.Results As tompared with group olive.the serum COHb and tissue CO were increased significantly and peaked within 3 h in group MC 100 mg and group MC 500 mg.The serum cTnI levels in group MC 100 mg and group MC 500 mg were significantly decreased (P<0. 01 ), especially in group MC 500 mg. The increase of CO in recipients of group MC100 mg and group MC 500 mg significantly inhibited the proinflammatory gene expression of TNF-α mRNA and the pro-apoptotic gene expression of Bax mRNA (P<0. 01), and increased the anti-apoptotic gene expression of Bcl-2 mRNA (P<0. 01), but did not increase the anti-inflammatory gene expression of IL-10 mRNA (P>0. 05) in the heart grafts. As compared with group N, the myocardial NF-κB activation was increased significantly in group olive,group MC 100 mg and group MC 500 mg (P<0. 01 ), but there was no significant difference among the later three groups (P>0. 05). The myocardial ultrastructure was also alleviated significantly in group MC 100 mg and group MC 500 mg as compared with group N. Conclusion The increase of CO induced by MC in recipients suppresses pro-inflammatory and pro-apoptotic gene expression and efficiently ameliorates transplant-induced heart I/R injury. The possible mechanism does not seem to be associated with down-regulation of the NF-κB signaling pathway.
7.Study on optimal harvest period of Lonicera Flos (Lonicera macranthoides).
Long-Yun LI ; Ying ZHANG ; Peng MA ; Ye-Kuan WU
China Journal of Chinese Materia Medica 2014;39(16):3060-3064
To ascertain the optimal harvest period of Lonicera Flos (Lonicera macranthoides) the configuration yield and quality of L. macranthiodes bloom verity and bud verity flower at different develop periods were Observed. The quality of L. macranthiodes which harvested at different times of the day was Compared. The configuration was significant difference between different develop period of L. macranthiodes flower. As bud growth, yield increased. Bloom verity of L. macranthoides chlorogenic acid content was significantly lower after opening (silver flower stage, golden flower stage), before opening (young bud stage, green-white stage) have no significant difference of the quality. Bud verity of L. macranthoides macranthoidin B is significant lower at yellow-white stage, young bud stage and green-white stage have no significant difference of the quality. The chlorogenic acid and isochlorogenic acid A content is significant difference between L. macranthoides harvested at different time of the day. The optimal harvest period of bloom verity is the white stage, picking time for 10:00 before and after 18:00. The optimal harvest period is the green-white stage, picking time is 8:00 before and after 18:00.
Agriculture
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Drugs, Chinese Herbal
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analysis
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Flowers
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chemistry
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growth & development
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Lonicera
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chemistry
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growth & development
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Time Factors
9.Relationship between medical papers published in SCI-covered journals and funds
Junwei WU ; Xue WANG ; Lei ZHANG ; Shuo CHEN ; Liyan LONG
Chinese Journal of Medical Library and Information Science 2017;26(5):44-48
The relationship of medical papers and growth tendency with medical and health funds in different countries of the world was studied by analyzing SCI-covered medical papers published in 2007-2016,which showed that medical and health field was one of the research hotspots in the world,the number of papers published by the top 10 countries showed a growth tendency,their medical and health funds were closely related with the production of scientific papers (r=0.99),and the compound growth rate of medical and health funds was closely related with that of the number of scientific papers (r=0.91).
10.Analysis of influential factors of comprehensive health function of elderly patients with rheumatoid arthritis
Ting LONG ; Lei FENG ; Lei WU ; Miao ZHANG ; Huaying CHEN
Tianjin Medical Journal 2017;45(9):994-997
Objective To understand the status of comprehensive health function impairment in elderly patients with rheumatoid arthritis, and to explore its influencing factors. Methods A total of 80 elderly patients with rheumatoid arthritis were enrolled in the first Affiliated Hospital of Kunming Medical University from December 2014 to October 2016. The quality of life SF-36 score was used to measure the physical health, mental health, daily activities and social health to assess the overall health status of patients. The factors influencing the comprehensive health function of the patients were analyzed by univariate analysis and multivariate linear regression analysis. Results The univariate and multivariate analysis showed that the low level of education, general occupation, marital misfortune, poor economic condition and self-treatment expense were the risk factors affecting the comprehensive health function in elderly patients with rheumatoid arthritis ( P<0.05). Conclusion Elderly patients with rheumatoid arthritis have problems of the functions of daily life, physical health, mental health and social health. To alleviate the high medical costs, improve the level of medical treatment, improve the people 's health and education level and maintain a good mood are the key to improve the overall health in patients with rheumatoid arthritis.