1.Requirement of PACS to image equipment
Chinese Medical Equipment Journal 2003;0(11):-
Following with the naissance and the development of the DICOM(the Digital Image Communication in Medicine) protocol,and numerous medical image equipments factory's support to the DICOM protocol,PACS(picture archiving and communication systems)are popularized quickly in hospital image section room,which pushes the progress of PACS industry.Hospitals have always been certain blindness in ushering and arguing PACS systems,uncertain how to control those providing company exactly on the technique.In this paper,some key problems are introduced in order to make everyone understand the relevant technique.
2.Construction of Teachers' Professional Ethics in Medical Colleges and Universities
Quanlan JI ; Hua ZHANG ; Yuexia LIAO
Chinese Medical Ethics 1994;0(06):-
Teacher is called as the engineer of human souls,and the guide for college students' growth,medical teachers' level of professional ethics has a direct impact on the quality of medical talents.To cope with the moral imbalance in the new economic interests,ideological and moral construction should be strengthened and a Chinese characterized system of teachers' professional ethics constructed.Teachers should be promote their function of role modeling,and cultivate their morality of "self discipline".Autonomic moral self-discipline should be strengthened,while the heteronomous role of morality further developed.
3.Protective effect of Icariin on primary cultures of neonatal rat cardiomyocytes treated with isoproterenol-induced injury
Hua LIU ; Hui JI ; Chaoying ZHANG
Chinese Pharmacological Bulletin 2003;0(12):-
Aim To investigate the protection effect of icariin on isoproterenol induced neonatal rat cardiomyocytes injury.Methods Isolation of cardiomyocytes from Sprague-Dawley rats aging 1~3 d were performed.Cardiomyocytes were grown in DMEM culture medium containing 15% fetal bovine serum.The cell density was adjusted to 1?105~5?105 cells?L-1,and the suspension was pipetted into each well of culture plates.Cells were incubated at 37 ℃ in 5% CO_2 atmosphere for 72 h.Cultured rat cardiomyocytes were divided into different groups:control,0.5 mmol?L-1 isoproterenol(model),and therapeutic groups with 0.1,1 and 10 ?mol?L-1 icariin.Cell viability was analyzed using MTT assay.The potential of mitochondrial membrane was determined by laser scanning confocal microscope.Apoptotic cells were detected by using flow cytometric analysis.Results Compared with the control group,the cell activity was lower in model group(P
4.The role of dentinal matrix metalloproteinases in collagenous degeneration of tooth tissue.
Dan-Yang WANG ; Ling ZHANG ; Ji-Hua CHEN
Chinese Journal of Stomatology 2011;46(6):379-381
Animals
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Collagenases
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metabolism
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Dental Bonding
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Dental Caries
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enzymology
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Dentin
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enzymology
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pathology
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Gelatinases
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metabolism
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Humans
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Matrix Metalloproteinase 14
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metabolism
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Matrix Metalloproteinase 20
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metabolism
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Matrix Metalloproteinase 3
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metabolism
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Matrix Metalloproteinases
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metabolism
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Sclerosis
5.Application of diffusion weighted magnetic resonance imaging for the diagnosis of pancreatic cancer
Huihan JIN ; Yuan JI ; Weijiang ZHANG ; Zhiyuan HUA ; Xiaoliang LU
Chinese Journal of Digestive Surgery 2012;11(2):129-131
Objective To investigate the value of diffusion weighted magnetie resonance imaging and apparent diffusion coefficient (ADC) value in the diagnosis of pancreatic cancer.MethodsThe clinical data of 36 patients with pancreatie cancer who were admitted to the Wuxi No.2 People's Hospital from March 2009 to June 2011 were retrospectively analyzed,and the clinical data of 30 healthy volunteers were collected.All candidates received diffusion weighted magnetie resonance imaging examination.The signal intensity ratios ( SIRs ) of the cancer and the pericancerous tissues in the T1 weighted-images (T1WI),T2 weighted-images (T2WI)and diffusion weighted-images (DWI) were compared by using one-way analysis of variance.The ADC values of the cancer and the paricancerous tissues were compared using the paired t test.The differences of the ADC values of the cancer and pericancerous tissues compared with those of healthy individuals were analyzed using an independent sample t test.ResultsThe accuracy rate of preoperative magnetic resonance imaging examination was 92%.The relative SIRs were 0.203 ± 0.190 in the T2 WI,0.399 ± 0.201 in the T1 WI and 0.579 ± 0.291 in the DWI,respectively,with no significant differences across the 3 kinds of images (F=5.92,6.15,6.83,P < 0.05 ),while SIRs of the T1 WI and DWI were significantly higher than that of the T2 WI ( P < 0.05 ).There was no significant difference in SIRs when comparing T1 WI and DWI ( P > 0.05 ).The mean ADC values of the cancer and pericancerous tissues of the pancreatic cancer patients and the pancreatic tissues of healthy individuals were (1.40±0.24) ×10 3 mm2/s,(1.71 ±0.10) ×10-3 mm2/s and (1.73±0.30) ×10-3 mm2/s,respectively,with significant differences across the 3 modes of images (t =10.54,12.08,P < 0.05).ConclusionDWI can show high quality images of the lesions,and ADC value is helpful in the diagnosis of pancreatic cancer.
8.Effect of Actinidia chinensis planch polysaccharide on the growth and apoptosis, and p-p38 expression in human gastric cancer SGC-7901 cells.
Wen-Ying SONG ; Guan-Hua XU ; Guang-Ji ZHANG
Chinese Journal of Integrated Traditional and Western Medicine 2014;34(3):329-333
OBJECTIVETo investigate the effect of Actinidia chinensis Planch polysaccharide (ACPS) on the growth and apoptosis of human gastric cancer SGC-7901 cells, and to explore the effect of SGC-7901 cells on p-p38 expression.
METHODSThe inhibition rates at different concentrations of ACPS on SGC-7901 cells at 24, 48, and 72 h were detected using CCK-8 method. Apoptosis ratios in SGC-7901 were determined by flow cytometry after 48-h treatment of different concentrations of ACPS. The expression of pro-caspase-9, PARP, and p-p38 in SGC-7901 cells after treated by different concentrations of ACPS was detected using Western blot. The expression of pro-caspase-9, PARP, and p-p38 was detected after SGC-7901 cells were pre-treated by p38 specific inhibitor.
RESULTSCompared with the control group, the optical density of SGC-7901 cells decreased after treated by 1, 2.5, 5, and 10 mg/mL ACPS (P < 0.05). Meanwhile, the longer the acting time, the lower the optic density (P < 0.01). IC50 was 7.43 mg/mL at 24 h; 3.88 mg/mL at 48 h, and 1.32 mg/mL at 72 h respectively. ACPS suppressed the protein expression of pro-caspase-9 (P < 0.01) and up-regulated the expression of PARP (89KD) (both P < 0.01). Further study showed that the protein expression of p-p38 was up-regulated in SGC-7901 cells treated by ACPS of different concentrations at 24 h (P < 0.05). The expression of phosphorylation p38 and the ACPS induced apoptosis of SGC-7901 cells could be inhibited after treated by specific inhibitor for 2 h.
CONCLUSIONSACPS could inhibit the growth of SGC-7901 cells and induce apoptosis. The underlying mechanism of inducing apoptosis was partially due to activating the p38MAPK path and further activating Caspase9 and PARP, finally leading to cell death.
Actinidia ; chemistry ; Apoptosis ; drug effects ; Caspase 9 ; metabolism ; Cell Line, Tumor ; Cell Proliferation ; drug effects ; Humans ; Poly (ADP-Ribose) Polymerase-1 ; Poly(ADP-ribose) Polymerases ; metabolism ; Polysaccharides ; pharmacology ; Stomach Neoplasms ; metabolism ; pathology ; p38 Mitogen-Activated Protein Kinases ; metabolism
10.The surgical treatment of severe ectopic adrenocorticotrophic hormone syndrome
Hua FAN ; Hanzhong LI ; Weifeng XU ; Zhigang JI ; Yushi ZHANG
Chinese Journal of Urology 2017;38(4):268-271
Objective To investigate the surgical treatment of severe ectopic adrenocorticotrophic hormone(ACTH) syndrome.Methods The clinical data of 12 cases of severe ecotopic ACTH syndrome from January 1996 to December 2016 were retrospectively analyzed.The cases include 7 males and 5 females with a mean age 38 years(range 11 to 64 years).12 cases demonstrated typical Cushing syndrome(CS),accompanied by hypertension, diabetes, hypokalemia and severe osteoporosis.9 cases were complicated with thoracolumbar compression fractures.8 cases presented with pulmonary infection and fever during operation.7 cases had cardiac dysfunction.Laboratory tests showed elevated serum cortisol(695.0 ~ 1 661.5 nmol/L,mean 1 055.7 nmol/L), high urinary free cortisol excretion (807.3 ~ 28 240.0 nmol/24 h, mean 5 270.5 nmol/24h)and high ACTH plasma levels(16.5 ~ 273.9 pmol/L, mean 80.4 pmol/L).Source of ectopic ATCH were not identified and CT showed bilateral enlargement of adrenal in 12 patients.Results We performed emergency bilateral or unilateral adrenalectomy in 12 cases.Among them, one-stage bilateral adrenalectomy were given to 6 cases, staged bilateral adrenalectomy was performed in 3 cases, and unilateral adrenalectomy were given to 3 cases.The patients were treated with hormone replacement therapy after bilateral adrenalectomy.The excised adrenal gland showed diffuse thickening and multiple nodular.Pathological diagnosis were adrenal cortical hyperplasia.They have been followed up for 1 to 8years(median 2.5 years), 9 cases survived, 2 cases died of diabetes and severe pulmonary infection, and 1 case was lost to follow-up.Conclusions Severe ectopic ACTH syndrome is difficult to treat.Emergency adrenalectomy is effective for the management of severe ectopic ACTH syndrome especially for those patients with severe Cushing syndrome but primary tumor can not be located.