1.The influence of Xuebijing injection and low molecular weight heparin on coagulation function and prognosis in patients with severe sepsis
Chinese Journal of Emergency Medicine 2011;20(4):405-408
Objective To compare between the impact of Xuebijing injectio (a Chinese herbal medicine preparation) and that of low molecular weight heparin (LMWH) on coagulation function and prognosis in patients with severe sepsis, so as to guide the treatment of sepsis. Method A total of 89 patients with severe sepsis were randomly(random number) divided into 3 groups, namely Xuebijing group (group A),LMWH group (group B) and routine group (group C). The patients of group C received a series of remedies according to the guideline for severe sepsis. The patients of group A were treated with Xuebijing injectio in addition to routine treatment. The patients of group B were treated with LMWH along with routine treatment.Data of blood coagulation function tests and APACHE Ⅱ score of patients in three groups before and after treatment were analyzed respectively. The 28-day mortality and length of hospital stay were compared among three groups. All data were analyzed by using t-test, Analysis of Variance, q-test, x2-test and rank sum treatment, all markers of the blood coagulation function tests in group A improved significantly after treatment (P<0.01), while only some markers of the blood coagulation function tests improved in the other two groups ( P < 0. 05 or P < 0. 01 ); After treatment, the blood coagulation function in group A improved significantly more than that in other two groups ( P < 0.05 ), while there were some markers of the blood coagulawith the data before treatment, the APACHE Ⅱ score in group A and group B decreased after treatment (P<0.05). After treatment, the APACHE Ⅱ score of group A and group B decreased significantly more than that of group C ( P < 0.05). But there was no significant difference between group A and group B ( P >Xuebijing obviously improves the blood coagulation function in patients with severe sepsis, while LMWH only improves some markers of the coagulation function tests. Both Xuebijing and LMWH reduce mortality and improve prognosis of patients with sepsis.
2.Mechanism of mitochondrial dysfunction and ultrastructural changes induced by rotenone in PC12 cells
Journal of Third Military Medical University 2003;0(07):-
Objective To observe the effects of different doses of rotenone on reactive oxygen species, mitochondrial transemembrane potential as well as mitochondrial ultrastructure in order to investigate the possible mechanism of mitochondrial dysfunction in cultured pheochromaffinoma cells. Methods ROS production induced by rotenone in cells were measured using flow cytometry. Mitochondrial transmembrane potential was detected by laser scanning confocal microscope and mitochondrial ultrastructures were observed under transmission electron microscope. Results Treatment with 0.1, 1.0, 2.0 and 3.0 ?mol/L concentrations of rotenone could increase the generation of ROS in PC12 cells as 1.55?0.17, 2.16?0.10, 1.77?0.20 and 1.40?0.12, and disrupt the mitochondrial transmembrane potential about 93.86?10.12, 119.43?7.09, 102.71?9.36 and 83.14?10.70. There were significant differences as compared with the control group (P
3.Calcium mechanism of endoplasmic reticulum stress and the change of ultrastructures induced by rotenone in PC12 cells
Chinese Journal of Neurology 1999;0(06):-
Objective To investigate the calcium mechanism of endoplasmic reticulum stress and the changes of ultrastructure induced by rotenone. Methods Rotenone induced reactive oxygen species(ROS) production in PC12 cells were measured by using flow cytometry(FCM). Relative changes of intracellular calcium concentration were monitored by use of laser scanning confocal microscope. The ultrastructures were observed under transmitting electronic microscope. Results Treatment with different concentrations of rotenone ( 0.1 ?mol/L,1.0 ?mol/L,2.0 ?mol/L and 3.0 ?mol/L )increased the ROS generation in PC12 cells, and fluorescence intensity (FI) value was shown as 1.55?0.17, 2.16?0.10, 1.77?0.20 and 1.41?0.12, respectively. The same concentration of rotenone resulted in the elevation of intracellular calcium,the relative changes of fluorescence intensity about 0.6029?0.0685,1.0902?0.1127,0.7479?0.0820 and 0.5614?0.0870. There were significant differences as compared with those in control group (P
4.A signal analysis method for bioelectrical impedance measurement of gastric motility based on HHT
Linyan CHAI ; Shu ZHAO ; Hong SHA
International Journal of Biomedical Engineering 2011;34(2):82-85
Objective The Hilbert- Huang transformation (HHT) method was introduced to process the bio-impedance gastric motility signals from subjects.Methods Nonlinear and non-stationary original gastric motility series were decomposed into a number of intrinsic mode function (1MF) components by the empirical mode decomposition method (EMD).Hilbert transformation was carried out then and instantaneous frequency was extracted effectively.Gastric motility signal among 0.03-0.06 Hz was reconstructed from the IMF.Results The results suggested that HHT was a new and applicable time series analysis method based on mode decomposition and could extract impedance signal and remove the disturbances such as blood flow and breathing.Conclusion The new adaptive mode decomposition-based signal processing method provides a new method to investigate clinical gastric motility information.
5.Rare constituents with anti-cancer activity from hydrolytic products in saponins of Panax quinquefolium stems and leaves
Xiaoning MA ; Ruihua CHAI ; Yuqing ZHAO
Chinese Traditional and Herbal Drugs 1994;0(09):-
Objective To study the chemical constituents of the acid hydrolytic products from the stems and leaves of Panax quinquefolium. Methods The stems and leaves of P. quinquefolium were hydrolyzed with acid;Isolation and purification were carried out by various chromatographic techniques,such as silica gel and so on. Compounds were identified and elucidated by spectral and chemical methods. Results Eight compounds were obtained from the acid hydrolytic products in the stems and leaves of P. quinquefolium and identified as 20 (S)-panaxadiol (Ⅰ),20 (S)-protopanaxadiol (Ⅱ),20 (R)-protopanaxadiol (Ⅲ),20 (S)-panaxatriol (Ⅳ),24 (R)-ocotillol (Ⅴ),20 (R)-protopanaxatriol (Ⅵ),20 (R)-dammarane-3?,12?,20,25-tetrol (Ⅶ),and 20 (R)-dammarane-3?,6?,12?,20,25-pentol (Ⅷ). Conclusion Compounds Ⅰ-Ⅷ are the derivates of the aglycones of ginsenosides,isolated from the acid hydrolytic products from the stems and leaves of P. quinquefolium for the first time. Among these compounds,Ⅳ,Ⅶ,and Ⅷ are discoverd from the roots,stems,leaves,fruits,and buds of P. quinquefolium for the first time. Compound Ⅶ is discovered and reported that it is the derivate of the aglycone of protopanoxadiol ginsenoside,with the conspicuous anticancer activity from the fruits of P. ginseng for the first time.
6.Effect of Yishen Jianpi Yangxue Tongli Fang on Levonorgestrel’s PCOS Rat
Yuhua HUANG ; Zihou ZHAO ; Songyan CHAI
Chinese Journal of Information on Traditional Chinese Medicine 2006;0(10):-
Objective To investigate the effect of Yishen Jianpi Yangxue Tongli fang (YSJP) on PCOS rats and approach the action mechanism of the recipe. Methods The animal model of levonorgestrel’s PCOS rat was established to observe the pregnancy rate and examinational results of light and electron-microscope. Results YSJP could promote pregnancy. The examinational results of light and electron-microscope showed that YSJP could recover the abnormal structure of organelle of the ovary. Conclusion YSJP had the effect of promoting pregnancy, recovering the injured organelle.
7.Effects of Tangshentang on the expression of LOX-1 and secretion of extracellular matrix induced by ox-LDL in rat masengial cells
Yueguang DU ; Kefu CHAI ; Tianxi ZHAO
China Journal of Traditional Chinese Medicine and Pharmacy 2005;0(03):-
Objective: To investigate the effect of Tangshentang on the expression of LOX-1 and secretion of TGF-?1,FN,ColⅣ in cultured rat masengial cells(RMCs) induced by ox-LDL and to explore its molecular mechanism of preventing and treating diabetic nephropathy.Methods: The cultured RMCs were divided into control group,ox-LDL group,Tangshentang group(respectively high,medium and low group)and rosiglitazone group.The mRNA expression was tested by RT-PCR.Synthesis of TGF-?1,FN,ColⅣ in cultured RMCs were determined by ELISA methods.Results: Tangshentang drug serum significantly attenuated up-regulation of TGF-?1,LOX-1 mRNA expression and synthesis of TGF-?1,FN,ColⅣ in a dose-dependent manner,with the peak at middle concentration,in RMCs stimulated by ox-LDL(50?g/ml).Conclusion: Tangshentang drug serum may protect kidney from injury by ox-LDL via the decreased expression of LOX-1 to reduce the uptake of ox-LDL and subsequently inhibiting TGF-?1 secretion,as well as the deposition of FN,ColⅣ.
8.Effects of enamel matrix proteins on the proliferation and protein synthesis of ectomesenchymal stem cells in vitro
Feng CHAI ; Yan JIN ; Yimin ZHAO
Journal of Practical Stomatology 2001;0(01):-
Objective: To investigate the effects of enamel matrix pr ot eins(EMPs) and purified EMPs(EMD) on the proliferation and protein synthesis act ivity of rat ectomesenchymal stem cells in vitro. Methods: C ell culture technique and 3H-leucine label assay were used to measure the pr oliferation and protein synthesis activity of rat ectomesenchymal stem cells exp osed to the EMPs- or EMD-conditioned culture media with different concentratio n. Results: Both EMPs and EMD at 50~200 mg/ml increased the pro l iferation and protein synthesis of the cells in 10-day-culture. EMPs and EMD a t 150 mg/ml showed the strongest effects(P
10.Delayed onset muscle soreness and muscle satellite cells:repair of skeletal muscle injury
Xiang ZHANG ; Zhiming CHAI ; Li ZHAO
Chinese Journal of Tissue Engineering Research 2015;(37):6031-6036
BACKGROUND:Skeletal muscle fiber damage that is induced by prolonged or high-intensity exercise directly cause muscle injury. OBJECTIVE:To propose the existence of a relationship between delayed onset muscle soreness and muscle satel ite cel s after skeletal muscle injury from the objective reality. METHODS:A retrieval of CNKI and PubMed databases was done for relevant literature published from February 1961 to February 2015 using the keywords of“delayed onset muscle soreness;skeletal muscle injury;satel ite cel s, skeletal muscle;myogenic regulatory factors”in Chinese and English, respectively. Final y, 59 articles were included to explore the mechanism of skeletal muscle injury accompanied by delayed onset muscle pain. RESULTS AND CONCLUSION:Skeletal muscle micro-injury mainly refers to ultrastructural destroy and metabolic disorders, involving muscle cel membrane, cytoskeleton, sarcomere and mitochondria, thereby leading to skeletal muscle contraction dysfunction that is often accompanied with delayed onset muscle soreness. Eccentric exercise can cause the severest microdamage to the skeletal muscle fibers. The occurrence of delayed onset muscle soreness can stimulate the secretion of growth factors from skeletal muscle satel ite cel s to a certain extent, and the time series of delayed onset muscle soreness triggered by sustained high-intensity eccentric exercise has a certain correlation with the time series of the proliferation of skeletal muscle satel ite cel s.