1.Determination of content of astragaloside A in Astragalus membranaceus powder for
Chunxin YANG ; Lixia SUN ; Genying XU
Chinese Traditional and Herbal Drugs 2001;32(4):312-314
To develop a method for the quality control of Astrgalus membranaceus (Fisch.) Bge. powder for injection (AMPI). Methods TLC-spectrophotometry was used to determine the content of astragaloside A in AMPI. The mobile phase was chloroform-methanol-water (65∶30∶10) and detected at the wave length of 418 nm. Results The regression equation within the spotted range of 80~240 μg was A=1.538 C+ 0.189, with good linearity, r=0.999 8. The average recovery rate was 98.68% and RSD=2.52%(n=5). Conclusion The method used simple and easily available instruments and the rusults obtained were reliable and specific, suitable for the quality control of AMPI.
2.Determination of content of astragaloside A in Astragalus membranaceus powder forinjection by TLC-spectrophotometry
Chunxin YANG ; Lixia SUN ; Genying XU ;
Chinese Traditional and Herbal Drugs 1994;0(04):-
Object To develop a method for the quality control of Astrgalus membranaceus (Fisch ) Bge powder for injection (AMPI) Methods TLC spectrophotometry was used to determine the content of astragaloside A in AMPI The mobile phase was chloroform methanol water (65∶30∶10) and detected at the wave length of 418 nm Results The regression equation within the spotted range of 80~240 ?g was A=1 538 C+ 0 189, with good linearity, r=0 999 8 The average recovery rate was 98 68% and RSD=2 52%(n=5) Conclusion The method used simple and easily available instruments and the rusults obtained were reliable and specific, suitable for the quality control of AMPI
3.Effect of Berberine on HMGB1 Release from Macrophages and its Mechanism
Guoqian CHEN ; Tingting WANG ; Zhigang HU ; Chunxin WANG ; Ming XU
International Journal of Traditional Chinese Medicine 2009;31(2):103-104
Objective To study the effect of berberine on extracellular release of high mobility group box 1 (HMGB1) and its mechanism. Methods After LPS was activated by different concentration of berberine, the release of HMGB 1 and TNF-a, and expression of HMGB 1 mRNA in cultured mouse peritoneal macrophages was investigated. Results Berberine markedly suppressed the release of HMGB 1 and expression of HMGB 1 mRNA from LPS-stimulated macrophages (P<0.05). While the release ofTNF-a was't significantly affected. Conclusion Berberine suppressed extracellular release of HMGB 1 by decreasing expression of HMGB 1 mRNA.
4.Effects of Neutral Posture Training on Balance and Motor Function in Stroke Patients
Jing ZHAO ; Chunxin XU ; Dong FANG ; Yi ZHAO ; Min SHEN
Chinese Journal of Rehabilitation Theory and Practice 2017;23(2):189-193
Objective To compare the effects of neutral posture training (NPT) and gas resistance training on balance and motor func-tion in stroke patients. Methods From June, 2014 to February, 2016, 44 hemiplegic patients were randomly divided into control group (n=22) and experimental group (n=22). The control group received conventional decubitus trunk muscle training and sitting gas resistance train-ing. The experimental group received NPT. They were assessed with Fugl-Meyer Assessment-Upper Extremities (FMA-UE), Fugl-Meyer Assessment-Lower Extremities (FMA-LE), and Berg Balance Scale (BBS) before and after training. Results There was no significant differ-ence in the scores of FMA-UE, FMA-LE and BBS between two groups (t<0.962, P>0.05). The scores significantly increased after training in both groups (t>12.248, P<0.001), and were higher in the experimental group than in the control group (t>1.972, P<0.05). Conclusion The NPT could improve the motor and balance function of stroke patients, rather than gas resistance training.
5.Effects of interactive Tuina on spatiotemporal gait parameters in children with spastic cerebral palsy
Xi FANG ; Chunxin XU ; Yunhui MI ; Kexing SUN ; Jue HONG
Journal of Acupuncture and Tuina Science 2024;22(4):289-296
Objective:To discuss the effects of walking function-guided interactive Tuina(Chinese therapeutic massage)on spatiotemporal gait parameters in children with spastic cerebral palsy(CP). Methods:Fifty children with spastic diplegic CP were divided into an observation group and a control group following a paired design and random number principle,with 25 cases in each group.The observation group was treated with the walking function-guided interactive Tuina,and the control group was offered the"six methods of spine and back"Tuina,20 min for each session and 5 sessions weekly for 3 consecutive months.The children's changes were assessed using the percentage of dimension E(walking,running,and jumping)of the gross motor function measure-88(GMFM-88)and three-dimensional gait analysis. Results:After treatment,the percentage of GMFM-88 dimension of dimension E(walking,running,and jumping)changed significantly in both groups(P<0.05),and the between-group difference was also statistically significant(P<0.05).After treatment,the step length,walking speed,and step frequency changed markedly in the observation group(P<0.05)and were significantly different from those in the control group(P<0.05).After the intervention,the stance phase and double support extended,and the swing phase became shorter in the observation group(P<0.05);the between-group differences were statistically significant(P<0.05).The maximal knee flexion angle and maximal posterior pelvic tilt angle decreased After treatment in the observation group,and the maximal anterior pelvic tilt angle increased,all showing statistical significance(P<0.05);the between-group differences were statistically significant(P<0.05). Conclusion:Compared with the passive Tuina manipulations,the"six methods of the spine and back",walking function-guided interactive Tuina has its advantage in improving walking function in children with spastic CP,manifesting as better lower-limb force line and walking efficiency.
6.Tripterine inhibits all-trans retinoic acid-caused adhesion between leukemia cells and endothelial cells
Limin XU ; Denghai ZHANG ; Chunxin YANG ; Xuhui LIU ; Geroges UZAN ; Wanzhang QIN
Journal of Integrative Medicine 2007;5(3):282-6
OBJECTIVE: Increasing of adhesion between leukemia cells and endothelial cells during all-trans retinoic acid (ATRA) treatment plays an important role in retinoic acid syndrome. This work observed the effects of tripterine on this ATRA-caused increasing in adhesion. METHODS: The effects of tripterine on ATRA-induced expressions of adhesive molecules in acute promyelocytic leukemia cell line NB4 and human umbilical vascular endothelial cells (HUVEC) were detected by flow cytometry. The effects of tripterine on adhesion between ATRA-treated NB4 and HUVEC were determined by adhesive assays. RESULTS: ATRA caused remarkable elevation of intercellular adhesion molecule-1 (ICAM-1) in NB4 cells, which could be significantly reduced by tripterine (P<0.01). The expressions of E-selectin, vascular cell adhesion molecule-1 (VCAM-1) and ICAM-1 in HUVEC were elevated by conditioned medium from ATRA-induced NB4 (ATRA-NB4-CM) (P<0.01), and inhibited by tripterine with inhibition rates being 25.3%, 42.4% and 61.0% respectively. ATRA increased the adhesion between NB4 and HUVEC, which was reversed completely by tripterine. CONCLUSION: Tripterine can inhibit ATRA-caused adhesion between leukemia cells and endothelial cells, and it might be a potential agent for treating retinoic acid syndrome.
7.Effects of triptolide-medicated serum on secretion function of adrenocortical cells isolated from rats.
Wenjie MAO ; Long CHEN ; Chunxin YANG ; Minghui YAO ; Ziqin ZHAO ; Yiwen SHEN ; Yueqin ZHOU ; Aimin XUE ; Hongmei XU ; Mingchang ZHANG
Journal of Integrative Medicine 2010;8(6):562-7
Objective: To study the effects of triptolide-medicated serum on secretory function of adrenocortical cells isolated from rats. Methods: Thirty SD rats were randomly divided into control group, prednisone group, and low-, medium- and high-dose triptolide groups. Rats were administered with normal saline, prednisone and low-, medium- and high-dose triptolide respectively by gastrogavage to prepare sera containing drugs. Primary adrenocortical cells were isolated from normal male rats and cultured with sera containing drug for 48 hours. Expression of proliferating cell nuclear antigen (PCNA) was observed by immunohistochemical method and number of PCNA-positive cells was counted. Ultrastructure of adrenocortical cells was observed under a transmission electron microscope. Content of corticosterone in supernatant of adrenocortical cell culture was detected by enzyme-linked immunosorbent assay, and real-time fluorescence quantitative polymerase chain reaction (PCR) was employed to investigate the expression of 3beta-hydroxysteroid dehydrogenase (3beta-HSD) mRNA. Results: As compared with the control group, content of corticosterone in supernatant of adrenocortical cell culture and expression of 3beta-HSD mRNA were significantly increased in the triptolide-treated groups, and the numbers of PCNA-positive cells were increased in the medium- and high-dose triptolide groups, however, they were decreased in the prednisone group. Conclusion: Triptolide-medicated serum can increase the secretion of corticosterone in rat adrenocortical cells in vitro.
8.Prenatal diagnosis of spinal muscular atrophy using multiple ligation-dependent probe amplification.
Yan XU ; Junyu ZHANG ; Chunxin CHANG ; Songchang CHEN ; Chenming XU
Chinese Journal of Medical Genetics 2021;38(3):214-218
OBJECTIVE:
To carry out prenatal diagnosis for families with high risk for spinal muscular atrophy (SMA) by using multiplex ligation-dependent probe amplification (MLPA).
METHODS:
Twenty-one families were enrolled. MLPA was used to detect copy numbers of SMN1 and SMN2 genes. Maternal contamination was excluded by using a short tandem repeat method.
RESULTS:
For 23 fetuses from the 21 families, 14 were identified as carriers, 1 as SMA patient, and 8 as normal. By linkage analysis of parental samples, three individuals were determined as silent (2+0) carriers.
CONCLUSION
MLPA can determine the carrier status of SMA. The identification of three silent (2+0) carriers among the 44 parental samples indicated a risk for such families, for which genetic counseling and reproduction guidance should be provided.
Female
;
Genetic Counseling
;
Heterozygote
;
Humans
;
Multiplex Polymerase Chain Reaction
;
Muscular Atrophy, Spinal/genetics*
;
Pregnancy
;
Prenatal Diagnosis
;
Survival of Motor Neuron 1 Protein/genetics*
9.The application of Raman spectroscopy in male reproduction diagnosis
Xueli LIU ; Chunxin CHANG ; Chenming XU
Chinese Journal of Laboratory Medicine 2019;42(7):498-502
The limited method demands for new technology in the management of male infertility. Raman spectroscopy is a rapid and sensitive non-invasive diagnosing technology. Raman spectroscopy was able to obtain Raman spectra from individual human sperm cells and allows for the comparison of their biochemical components, DNA and mitochondrial structure as well as epigenetic changes. This review provided an overview of the principle of each major types and discussed the progress in clinical application , indicating the potential of Raman spectroscopy as an valuable addition in assessing the quality of sperm cells for in vitro fertilization.
10. Effects of zinc ions on biological functions of human umbilical vein endothelial cells
Pang BAO ; Huanyun LIU ; Yuqing WANG ; Yajun TAN ; Lufeng LI ; Chunxin XU ; Lan HUANG ; Xiaohui ZHAO
Chinese Journal of Cardiology 2018;46(5):390-395
Objective:
To evaluate the effect of zinc ions on human umbilical vein endothelial cells biological functions.
Methods:
The primary human umbilical vein endothelial cells were cultured with the ECM medium, and cells were divided into 8 groups: the control group(routine culture,