2.Relationship between rotatioanal deformity and operational correction rate in scoliosis
bin, CHEN ; zu-de, LIU ; xiao-feng, HAN ; lei, ZHANG
Journal of Shanghai Jiaotong University(Medical Science) 2006;0(10):-
Objective To study the relationship between rotational deformity and operational correction rate in scoliosis. MethodsFrom January 2005 to December 2006,44 cases of adolescent idiopathic scoliosis with operational correction were reviewed.Before operation,all the patients were performed MRI scan of the whole spine and the rotation angle of superior and inferior endplate of nine vertebraes with the center of apical vertebrae were measured so that the mechanical torsion angle of vertebrae and disc were calculated,and the rotation compliance of the spine was obtained.In addition,preoperative plain,lateral and bending film of thoracic-lumbar vertebrae were taken to measure the Cobb angle,and the items above were compared with those of post-operation to calculate the scoliosis flexibility and correction rate.Correlation analysis was conducted between the rotation compliance,flexibility and operational correction rate in scoliosis.Results There were significant differences in the mean coronal and sagittal Cobb angle before and after the operation(P
3.Flocculation of Fermented Broth with 1,3 -Propanediol
Fan-Feng LI ; Yu-Jie ZHOU ; De-Hua LIU ;
Microbiology 1992;0(03):-
Flocculation of fermented broth with 1,3 -propanediol using component B of natural clarifier-Ⅱ was studied. Firstly, single factor tests and orthogonal tests were carried out. The results showed the main factors which influenced the flocculation and the optimal conditions were: pH6.0, flocculant B 0.01g/L , NaCl 0g/L, and the FR was 95.97% . The following results by filtration experiments, compared with the sample without pretreatment, indicated that the filtration speed of the flocculated sample was improved dramatically, and the weights of net and dry filter cakes were increased by 41.13% and 51.88% , respectively. Electrodialysis experiments showed that flocculation could accelerate desalting process, and could take the place of centrifugal pretreatment when it combined with the filtration.
4.The effect of histotype and histodifferentiation on the standardized uptake value of no-small cell lung cancer ~(18)F-FDG PET/CT imaging
De-jun, LIU ; Yan-lin, FENG ; Feng-wen, YU ; Xiao-hong, HE
Chinese Journal of Nuclear Medicine 2010;30(1):5-9
Objective To determine the effect of histotype and histodifferentiation on the maximum standardized uptake value (SUV_(max)) of non-small cell lung cancer (NSCLC) ~(18)F-fluorodeoxyglucose (FDG) PET/CT imaging.Methods Two hundred and sixty patients with NSCLc underwent ~(18)F-FDG PET/CT imaging.They were classified according to (1) histotype:as adenocarcinoma (AC),squamous cell carcinoma(SQC),adenosquamous carcinoma (ASC) and other type carcinoma (OTC),and (2) histodifferentiation:as grade Ⅰ (well-differentiated),grade Ⅱ (moderate-differentiated) and grade Ⅲ (poor-differentiated).The SUV_(max) and size(long diameter)of the primary lesions were measured.Multivariate regression analysis was used to analyze the relationship between the SUV_(max) and variable factors including histotype,histodifferentiation,lesion size,age,sex,body height,body weight,body mass index (BMI),blood glucose level,dose,and rate of dose.Results Two hundred and sixty patients had 260 primary NSCLC tumors.There were 161 AC(15 grade Ⅰ,88 grade Ⅱ,58 grade Ⅲ),74 SQC(6 grade Ⅰ,39 grade Ⅱ,29 grade Ⅲ),15 ASC(7 grade Ⅱ,8 gradeⅢ)and OTC(8 large cell,2 carcinosarcoma).Only lesion size (F=87.046.P<0.001),histodifferentiation (F=87.604,P<0.001) and histotype (F=66.663,P<0.001) were included for multivariate regression analysis with SUV_(max).After adjustment for lesion size,the SUV_(max)(mean and 95%confidence interval) in ascending order was AC Ⅰ:3.3(2.1-4.5),ACⅡ:6.0(5.5-6.6),SQCⅠ:6.1(4.2-8,0),ASC Ⅱ:6.6(4.8-8.4),SQCⅡ.7.8(7.0-8.6),OTC:8.1(6.6-9.6),AC Ⅲ:8.3(7.6-8.9),ASC Ⅲ:8.7(7.0-10.4),and SQC Ⅲ:8.9(8.0-9.8).11he SUV_(max) of AC Ⅰ was significantly lower than that of SQC Ⅰ(q=-2.786,P=0.017),same for AC Ⅱ and SQC Ⅱ(q=-1.776,P<0.001),but no statistically significant differences were found among AC Ⅲ,ASC Ⅲ and SQC Ⅲ(q=-0.593,-0.422,0.171,P=0.288,0.642,0.860,respectively).For the same histotype lesions,the difference of SUV_(max) among AC Ⅰ,Ⅱ and Ⅲ was statistically significant(q=-2.720,-4.943,-2.223,all P<0.001),as also for SQC Ⅰ and Ⅲ(q=-2.751,P=0.012).Conclusion Histotype and histodifferentiation are significant correlative factors for ~(18)F-FDG uptake of NSCLC,with histodifferentiation being the factor with greater impact.
5.Recent advances in drug screening methods of SARS-CoV-2 spike protein
Li-de HU ; Chuan-feng LIU ; Ping LI ; Guan-yu DONG ; Xin-yong LIU ; Peng ZHAN
Acta Pharmaceutica Sinica 2024;59(2):298-312
The pandemic of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has caused a serious impact on global public health and the economy. SARS-CoV-2 infiltrates host cells
6.Effects of triptolide on the expression of androgen receptor in human prostate LNCaP cells and its mechanism of action.
Bi-de LIU ; Qian-qian FENG ; Xiao GU ; Dan LU ; Wei LI
Acta Pharmaceutica Sinica 2015;50(10):1246-1251
To study the regulation of androgen receptor (AR) expression in human prostate cancer LNCaP cells by triptolide (TP) and the possible mechanism, by using qRT-PCR and Western blot, the AR mRNA and protein levels in TP treated LNCaP cells were detected, and the AR protein level in TP and NF-κB inhibitor treated LNCaP cells was also detected; a series of pGL3-AR promoter reporter gene vectors were built using restriction-free cloning method, and the vectors were employed to investigate the effects of TP on the transcriptional activity of AR promoter in LNCaP cells; the upstream proteins which may play regulatory roles were detected using western blot assay. After treated LNCaP cells with TP for 48 h, AR mRNA and protein expressions decreased with increasing TP concentration. The expression of AR target gene PART1 and prostate specific antigen (PSA) was also downregulated by TP treatment; a series of pGL3-AR promoter reporter vectors were constructed and validated by sequencing and luciferase activity; the results of dual luciferase reporter assay showed that TP downregulated AR at the transcriptional level; PI3K/AKT/NF-κB pathway which is associated with AR promoter activity was drowregulated by TP. In conclusion, our results demonstrated that the transcriptional activity of AR in LNCAP cells was downregulated by TP, and PI3K/AKT/NF-κB pathway may be involved in the regulation mechanism.
Cell Line, Tumor
;
Diterpenes
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pharmacology
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Down-Regulation
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Epoxy Compounds
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pharmacology
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Genetic Vectors
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Humans
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Male
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NF-kappa B
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antagonists & inhibitors
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Phenanthrenes
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pharmacology
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Phosphatidylinositol 3-Kinases
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metabolism
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Promoter Regions, Genetic
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Prostate-Specific Antigen
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metabolism
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Prostatic Neoplasms
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metabolism
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RNA, Messenger
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Receptors, Androgen
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metabolism
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Signal Transduction
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Transcriptional Activation
7.An experimental study on the removal of thrombi by Fogarty thrombectomy in different time phases
Yi GU ; De SHI ; Yu ZHAO ; Leping YIN ; Chao FENG ; Tong LIU
Chinese Journal of General Surgery 1997;0(06):-
Objective To clarify the effect of Fogarty balloon catheter thrombectomy on venous wall integraty when performed on different time phases.MethodsA murine model of inferior vena caval thrombosis was established. Collagen of venous wall was measured by Van Gieson staining and this was used as the criteria of venous wall injury. The thrombus residue was determined after Fogarty balloon catheter thrombectomy in each individual time phase. Results Collagen deposit in the adventitia of venous wall increased every day,to an amount of (5 902?399) ?m2 on the third day which was significantly different from that of controls (5 333?454) ?m2(P
8.Study of Neurobehavioral Teratogenesis in Offspring of Pregnant Rats Exposed to Hyperthermia and Irradiation
de-yong, JIA ; hui-juan, LIU ; hui-gen, FENG ; yan-lan, LI
Journal of Applied Clinical Pediatrics 1986;0(01):-
Objective To study whether hyperthermia and ionizing radiation could produce combined effects on the neurobehaviors of neonatal rats.Methods These rats who were pregnant for 8 or 9 days received respectively total body irradiation by 60Co-rays .When the rats were pregnant for 10 days,the temperature of rat anus was kept at (37?0.5) ℃,(41?0.5) ℃,(42?0.5) ℃,respectively in warming boxes and lasted for 2,3,4,5 minutes.The neurobehaviors of neonatal rats were observed.Results In contrast to control group and 37 ℃group ,when pregnant rats were exposed to high temperature.the neonate rats were delayed for the appearance of four physiologic markers,the age of acquisition for four reflexes and the time of learning and memory(P
9.Study and application about a modality preventing iodine deficiency disorders in coastal salt-produced areas
Long, DAI ; De-fa, LIU ; Ya-ping, ZHANG ; Hui-jian, SU ; Yan-feng, ZHANG
Chinese Journal of Endemiology 2008;27(5):570-573
Objective To discuss the strategy and intervention measures of the iodine deficiency disorders (IDD)control in coastal salt.producing areas so as to shoot the problem of non-iodized salt causing IDD.Methods Accordinng to different areas,periods and crowds,eomplicatd measures and strategies were taken such as supply of iodized salt to peopie in special need while universalizaion of iodized salt,health promotion,private salt factory censu8 and close.iodized salt quality monitoring and promotion of technology of iodized salt producion in Xiamen, where the probiem of non-iodized salt Was serious since 1995.Results Iodized salt manufactured Was qualified in a increased rate from 89.50% in 1995 to 96.17% in 1997,stablized at 99.00%since 2000.Qualified iodized salt sold in the shops waft increased from 87.33%in 1996 to 96.33%in 1998.Popularization covered by iodized salt in urban areas increaased from 0.92%in 1 995 to 100.00%in 2000,and it Was increased from 0 to 99.00%in suburban area8 and increased from 0 to 89.00%in rural areas.Since 2001 iodized salt covered up 93.00%of the people.The rate of child goitre in urban,suburban and rural areas respectively Wag 16.44%(228/1387), 20.57%(266/1293) and 24.93%(651/2611).Moreover,beginning from 1996,it reduced tO below of 5.00%respectively in 1999,2001 and 2005.The median of urinary iodine of children in urban,suburban and rural areas respectively was 137.50, 102.12,94.66 μg/L in 1995,since 1997 it reached 100.00μg/L and kept at 120.00μg/L In 2007 the median of urinarv iedine of children respectively was 271.10,240.40,198.10μg/L in urban,suburban and rural areas.The pereentage of awareness of IDD knowledge was 74.00%(444/600)in students in 1997 and reached 95.00% since 2000.Conclusion The paRern of eliminating iodine deficiency dis ease in Xiamen has successful established,which works efficiently and sets an example for iodized salt supplement in non-iodized salt areas and continually eliminating the iodine deficiency disease.
10. Research progress of the relationship between endothelial progenitor cells and cardiovascular complications in diabetes
Yu-hua LIU ; Lu ZHAI ; De-feng ZHAO ; Xia DAI
Journal of Medical Postgraduates 2020;33(1):88-92
70% to 80% of people with diabetes died from cardiovascular complications, which had become the leading cause of death in diabetic patients. Cardiovascular complications in diabetic patients are mainly associated with vascular endothelial dysfunction and poor neovascularization. Its important influencing factors are changes in the number of endothelial progenitor cells and dysfunction. Hyperglycemia in diabetic patients can cause endothelial progenitor cell dysfunction, inhibit its proliferation ability, angiogenesis ability and paracrine effect. In order to provide research ideas for the prevention and treatment of cardiovascular complications in diabetic patients, this article aims to review the relevant mechanism of the effect of hyperglycemia on the number and function of endothelial progenitor cells in patients with diabetes, and the application of endothelial progenitor cells in the treatment of diabetic cardiovascular disease.