5.Free fatty acids regulate expression of adiponectin receptor gene in adipocytes
Yu WEN ; Hong-Wei WANG ; Jing WU ; Hui-Ling LU ; Xiu-Fen HU ; Zhi XIA ;
Chinese Journal of Endocrinology and Metabolism 2001;0(05):-
3T3-LI preadipocytes were induced to differentiate and 3T3-L1 adipocyte or preadipocytes were incubated with oleate or palmitate overnight.RT-PCR was used to measure adiponectin receptor(AdipoR)1 and AdipoR2 mRNA levels.The results showed that the AdipoRl and AdipoR2 expressions were differentiation- dependent.Oleate only suppressed AdipoR mRNA expression in preadipocyte but not in adipocyte.However,high concentration of palmitate reduced AdipoR mRNA expression in both 3T3-LI preadipocyte and adipocyte.
6.Neuroprotective effect screening and the mechanism of 10 kinds of coumarin derivatives.
Xiu-yun SONG ; Jin-feng HU ; Ming-na SUN ; Gang LIU ; Nai-hong CHEN
Acta Pharmaceutica Sinica 2015;50(6):697-701
The study reports the detection of neuroprotective effect of 10 kinds of coumarin derivatives and explores their possible mechanism. MTT method was used to screen the neuroprotective effect of 10 coumarin derivatives on neurotoxic agents (Aβ25-35 and rotenone) or OGD (oxygen-glucose deprivation). A compound with better protective effect was obtained. Then the effect of this compound on neurotoxic agents on PC12 was detected by the morphological observation. Furthermore, the effect of compound 3 on microglia with lipopolysaccharide (LPS) induced inflammation was detected. And the inflammatory factor was tested. Finally, direct free radical scavenging ability was detected. Compound 3 was found to be the best compound through three neurons toxic models. Not only compound 3 ameliorated cell viability reduced by three neurons toxic models, but also significantly inhibited the production of inflammatory factor (TNF-α and IL-1β). And its free radical scavenging ability is very good, especially the effect on superoxide anion, which is comparable with vitamin C. The significant scavenging effect of compound 3 on superoxide anion might be the mechanism of the neuroprotection. Compound 3 as a potential neural cell protective agent merits further investigation.
Animals
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Coumarins
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chemistry
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Free Radical Scavengers
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chemistry
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Inflammation
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Microglia
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drug effects
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Neurons
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drug effects
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Neuroprotective Agents
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chemistry
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PC12 Cells
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Rats
7.Determination of amino acids in Galli Gigerii endothelium corneum by HPLC with pre-column derivatization.
Kun LIANG ; Dan ZHANG ; Ji SHI ; Hong HU ; Yan-Feng XIU ; Tian-Zhu JIA
China Journal of Chinese Materia Medica 2014;39(8):1463-1467
Hydrolytic amino acids were extracted by acid hydrolysis method, then derivatized with phenyl isothiocyanate (PITC). And the samples were analysed by HPLC on an Ultimate Prime C18 (4.6 mm x 250 mm, 5 microm) column with gradient elution of 0.1 mol x L(-1) sodium acetate buffer solution (adjusted to pH 6. 5)-acetonitrile (93:7) (A) and acetonitrile-water (8:2) (B) at a flow rate of 1.0 mL x min(-1). Column temperature was 40 degrees C and the detected wavelength was 254 nm. Amino acids derivative solution remained stable in 36 hours. The response was linear for 16 amino acids with a correlation coefficient r > 0.999 5. The average recoveries were 98.01% -101.8%. The method is reliable with good accuracy and repeatability, which is useful for the determination of amino acids in Galli Gigerii Endothelium Corneum.
Amino Acids
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analysis
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Animals
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Chickens
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Chromatography, High Pressure Liquid
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Chromatography, Reverse-Phase
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Endothelium
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chemistry
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Gizzard, Avian
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chemistry
8.PRELIMINARY STUDY ON AN ANTIBIOTIC-PRODUCING BACTERIUM
Xi-Qian LAN ; Jun-Hua HU ; Hong-Xiu WEN ; Jia-Lian CHEN ; Ze-Yang ZHOU ;
Microbiology 1992;0(05):-
An antibiotic-producing bacterium, which was numbered as 20 #-5, was separated from the soil in Chongqing. It was identified as the member of pseudomonas. Gram positive bacteria are badly suppressed by it. The antibiotic secreted by 20 #-5 can endure 100℃ for half an hour, and it can also go through the ultrafiltration membrane with pores of 0.22?m.
9.Clinicopathologic study of aortic valves in children.
Ping HUANG ; Hong-wei WANG ; Zhen-lu ZHANG ; Xiu-fen HU ; Yan-ping LI ; Pei-xuan CHENG ; Jian-ying LIU
Chinese Journal of Pathology 2006;35(10):623-624
Adolescent
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Aortic Valve
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abnormalities
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Aortic Valve Insufficiency
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complications
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pathology
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surgery
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Aortic Valve Stenosis
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complications
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pathology
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surgery
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Child
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Endocarditis
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complications
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pathology
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surgery
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Female
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Heart Defects, Congenital
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complications
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pathology
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surgery
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Heart Valve Prosthesis Implantation
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Humans
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Male
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Rheumatic Heart Disease
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complications
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pathology
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surgery
10.The precision of glomerular filtration rate determined by Gates method and compared with the results from renal pathological changes
Peng-cheng, HU ; Hong-cheng, SHI ; Yu-shen, GU ; Shuguang CHEN ; Yan, XIU ; Bei-lei, LI ; Wei-min, ZHU
Chinese Journal of Nuclear Medicine 2011;31(2):134-137
Objective To evaluate the precision of GFR using Gates method and compared with the results from renal pathological changes. Methods Twenty-seven patients whose 99Tcm-DTPA renograms had no obvious uptake phase were enrolled in Group A, and 27 patients whose 99Tcm-DTPA renograms had obvious uptake phase were enrolled in Group B. The measurement of GFR by Gates method was compared to the creatinine clearance measured and predicted by Cockroft-Gault (C-G), modification of diet in renal disease (MDRD) and SCr level. Renal pathological changes in two groups were compared using Pearson correlation and t test analysis. Results In Group A, GFR determined by Gates method did not show correlation with that estimated by C-G or 1/SCr (r = 0. 357,0. 376, both P >0.05), but was significantly correlated with GFR estimated by MDRD(r = 0. 440, P < 0.05). In Group B, GFR determined by Gates method showed significantly correlation among GFR estimated by MDRD, C-G, and 1/SCr (r =0. 471, 0. 527,0. 452, all P < 0.05). Renal tubulointerstitial damage score in Group A was higher than that in Group B (7.15±2.32, 3.70±3.06, t=4.66, P <0.001). Conclusions GFR determined by Gates method is less precise when 99Tcm-DTPA renogram has no obvious uptake phase than that when 99Tcm-DTPA renogram has obvious uptake phase. Renal tubulointerstitial damage is a strong indicator of no obvious uptake phase in 99Tcm-DTPA renogram.