2. Simultaneous determination of berberine, matrine and oxymatrine in traditional Chinese medicines by using nonaqueous capillary electrophoresis
Academic Journal of Xi'an Jiaotong University 2010;22(1):7-13
A rapid method for the simultaneous determination of berberine (BBR), matrine (MT) and oxymatrine (OMT) by nonaqueous capillary electrophoresis (NACE) was developed. Optimum separation of the analytes was obtained on a 50 cm x 50 μm i. d. fused-silica capillary using a non-aqueous buffer system of 70 mM ammonium acetate, 7.0% acetic acid and 10% acetonitrile at 25 kV and 20°C . The relative standard deviations (R. S. D.) of the migration times and peak areas of the three active components were 0.06%-0.20% and 0.12%-3.41% for berberine, 0.11%-0.60% and 0.74%-1.63% for matrine, 0.15% and 0.45% for oxymatrine, respectively. Detection limits of berberine, matrine and oxymtrine were 0.18 μg/mL, 4.08 μg/mL and 4.16 μg/mL, respectively. In the tested concentration range, good linear relationships (0.999 2 for berberine, 0.998 8 for matrine and 0.998 8 for oxymatrine) were observed. The linear calibration ranges were 0.45-360.0 μg/mL for berberine, 8.16-408.0 μg/mL for matrine and 20.8-416.0 μg/mL for oxymatrine. This method has been successfully applied to the phytochemical analysis of alkaloids extracts from two commonly used traditional Chinese herbal drugs: Sophora flavescens Ait. (Kushen) and Cortex phellodendri chinensis (Huangbai) and their medicinal preparations.
3. Simultaneous determination of berberine, matrine and oxymatrine in traditional Chinese medicines by using nonaqueous capillary electrophoresis
Academic Journal of Xi'an Jiaotong University 2010;22(1):7-13
A rapid method for the simultaneous determination of berberine (BBR), matrine (MT) and oxymatrine (OMT) by nonaqueous capillary electrophoresis (NACE) was developed. Optimum separation of the analytes was obtained on a 50 cm x 50 μm i. d. fused-silica capillary using a non-aqueous buffer system of 70 mM ammonium acetate, 7.0% acetic acid and 10% acetonitrile at 25 kV and 20°C . The relative standard deviations (R. S. D.) of the migration times and peak areas of the three active components were 0.06%-0.20% and 0.12%-3.41% for berberine, 0.11%-0.60% and 0.74%-1.63% for matrine, 0.15% and 0.45% for oxymatrine, respectively. Detection limits of berberine, matrine and oxymtrine were 0.18 μg/mL, 4.08 μg/mL and 4.16 μg/mL, respectively. In the tested concentration range, good linear relationships (0.999 2 for berberine, 0.998 8 for matrine and 0.998 8 for oxymatrine) were observed. The linear calibration ranges were 0.45-360.0 μg/mL for berberine, 8.16-408.0 μg/mL for matrine and 20.8-416.0 μg/mL for oxymatrine. This method has been successfully applied to the phytochemical analysis of alkaloids extracts from two commonly used traditional Chinese herbal drugs: Sophora flavescens Ait. (Kushen) and Cortex phellodendri chinensis (Huangbai) and their medicinal preparations.
4.Use of a vacuum-assisted closure device in the repair of defect after enlarged excision of dermatofibrosarcoma protuberans
Chinese Journal of Dermatology 2012;45(9):668-669
Objective To develop a new method to repair the defect after enlarged excision of dermatofibrosarcoma protuberans.Methods This study included 8 patients with dermatofibrosarcoma protuberans measuring 2.5 to 5.5 cm in diameter.All the patients underwent enlarged excision of the affected skin and subcutaneous tissue.The defect measured 12.5 to 17.5 cm in diameter.Sieve skin flaps secured with a vacuum-assisted closure device were used to repair the huge surface defects.Results All the patients experienced the survival of sieve skin flaps at stage Ⅰ after operation,with no infection,effusion or necrosis.No relapse was observed during the 3 to 40 months of follow up.A satisfactory recovery was achieved in skin appearance and function with the formation of a flat scar,and no obvious proliferation occurred.Conclusion The vacuum-assisted closure device offers a safe and simple method for securing skin grafts to the defect after enlarged excision of dermatofibrosarcoma protuberans.
5.Distribution of mean platelet volume in the healthy and impaired fasting glucose individuals
Jing XUE ; Lixia LYU ; Wei LI ; Li YAN ; Hua YAN
Chinese Journal of Laboratory Medicine 2014;(6):451-454
Objective The different distribution and clinical significance of mean platelet volume (MPV) in the healthy normoglycemic and impaired fasting glucose (IFG) individuals were discussed.Methods The 499 individuals including 184 male and 315 female,who had undergone health checks in Tianjin Huanhu Hospital during May and July 2012 were studied retrospectively.Average age is forty-five ( thirty-five to eighty).Subjects were categorized into four groups according to fasting plasma glucose ( FPG) levels:G1 (3.89 mmol/L≤FPG<5 mmol/L, n=125),G2(5 mmol/L≤FPG <5.5 mmol/L, n=121), G3(5.5 mmol/L≤FPG<6.1 mmol/L, n=142), and G4(6.1 mmol/L≤FPG<7 mmol/L, n=111).G1, G2, and G3 are defined as normal FPG groups and G 4 is defined as IFG group.Eighty-nine cases in the same age patients with type II diabetes mellitus group ( G5 ) were observed at the same time.Results The MPV increased with the increasing FPG levels in the following order:G1(8.62 ±0.77) fl, G2 (8.85 ±0.80) fl, G3(8.90 ±0.69) fl,G4(9.14 ±0.78) fl and G5(12.03 ±1.42) fl.MPV[(12.03 ±1.42) fl] of type Ⅱdiabetes mellitus group(G5) was higher than that in the IFG group (G4)[(9.14 ±0.78) fl] and normal FPG groups[G1(8.62 ±0.77) fl,G2(8.85 ±0.80) fl,G3(8.90 ±0.69) fl] (F=12.773,P<0.01);MPV of the IFG group [ ( 9.14 ±0.78 ) fl ] was significantly higher than that in normal FPG groups [ G1 (8.62 ±0.77) fl,G2(8.85 ±0.80) fl,G3(8.90 ±0.69) fl] (F=12.773,P<0.01 for G4 vs.G1 and G2, P<0.05 for G4 vs.G3) ;MPV in the high-normal glucose group (G3) [(8.90 ±0.69) fl] was obviously higher than that in the low-normal glucose group (G1) [(8.62 ±0.77) fl] (F=12.773,P<0.05);MPV was positively associated with FPG in normal FPG groups ,IFG group and type Ⅱ diabetes mellitus group (G1-3:r=0.22, P<0.05;G4:r=0.26, P<0.01;G5:r=0.29, P<0.01).Conclusions Significant difference of MPV was observed in population of different FPG levels.Especially, MPV in IFG group was evidently higher than that in normal FPG group and was positively associated with FPG levels.
7.Advance in studies on anti-inflammatory effect of Uygur medicine.
Yan LIU ; Li ZHANG ; Hua HUANG
China Journal of Chinese Materia Medica 2014;39(9):1714-1720
Inflammation refers to the defensive reaction of living organisms with vascular systems against damage factors, and gets involved in the pathogenesis of many diseases. Uygur medicine is an important component of traditional Chinese medicine, as well as one of the four major ethnic medicines. It is widely applied in the clinical treatment of inflammatory diseases. In recent years, many domestic and foreign scholars have studied the anti-inflammatory effect and mechanism of effective components, effective fractions, extracts and compound preparations of Uygur medicine. In this paper, the authors summarized anti-inflammatory Uygur medicine, in the expectation of providing reference for discovering new anti-inflammatory drugs from Uygur medicine.
Anti-Inflammatory Agents
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therapeutic use
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Drugs, Chinese Herbal
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therapeutic use
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Humans
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Medicine, Chinese Traditional
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methods
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trends
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Phytotherapy
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methods
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trends
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Plants, Medicinal
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chemistry
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classification
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Species Specificity
8.Relationship between vertebral artery incisures and the diseased regions evaluated using transcranial Doppler ultrasound
Yan, LI ; Hua, YANG ; Jing, CHENG
Chinese Journal of Medical Ultrasound (Electronic Edition) 2008;5(2):235-247
Objective To explore the relationship between the incisure changes in the intracranial vertebral artery (VA) segments on transcranial Doppler (TCD) and their diseased regions. Methods Incisure changes in VA intraeranial segments on TCD in 24 cases were found. Digital subtract angiography (DSA), computed tomography angiography (CTA)or coler Doppler flow imaging (CDFI)of carotid arteries were performed to confirm their diseased regions. Results (1)The group with end-systolic and pre-diatolic wide incisures was found in 9 cases: DSA or CTA showed 5 cases with severe stenosis, 2 cases with occlusion and 2 cases with congenital tenuity of the affected vertebral artery proximal part(VA-Pr). Within the above 8 cases, ipsilateral subclavian artery (SubA) was normal, 1 case was complicated with moderate stenosis of ipsilateral SubA,and 1 case was complicated with occlusion of contralateral SubA. Haemodynamics test showed (1)negative; (2)The group with systolic incisures was in 12 cases, and 12 patients were divided into two groups based on the haemodynamics test : ① positive group was in 6 cases. DSA showed that VA-Pr was normal but SubA had impaired with different degrees; ② negative group was in 6 cases. DSA showed VA-Pr was with occlusion in 4 cases and 2 cases was with congenital tenuity; The above 2 cases were complicated with stenosis of ipsilateral SubA and in 4 cases ipsilateral SubA were normal; (3) The group with small vibrated sharp waves on Doppler was in 3 cases, and DSA showed VA-Pr occlusion in 3 cases. In the 3 cases,one case was complicated with occlusion of ipsilateral SubA. Blood stealing was present in cervical muscular branches but not present between vertebral arteries . Ipsilateral SubA were normal in 2 cases. Haemodynamic tests showed negative. Conclusions VA incisures were not only present in the early subclavian steal syndrome (SSS) but also were found in the patients with impaired SubA . However, blood steal pathway is imperfect, and would be found in affected VA-Pr or congenital tenuity. Haemodynamic tests can help identify the above situation. The TCD screening method can be used in the routine diagnosis for SubA and VA from proximal to intracranial segments involvement, but there are limitations to some extent. It needs to combine with DSA and CDFI for diagnosis.
9.Optic nerve injury model in rats set up by fluid percussion brain injury device
Hua YAN ; Linlin ZHANG ; Fengrong LI
Chinese Journal of Ocular Fundus Diseases 2009;25(4):301-305
Objective To observe whether the animal model of optic nerve injury in rats can be set up by fluid percussion brain injury device (FPI) or not.Methods Seventy-one healthy female Wister rats were randomly divided into 2 groups,inlcuding model group with 66 rats and control group with 5 rats.The rats in model group were randomly divided into 3 groups.Eight rats in group 1 were examined by flash-visual evoked potential (F-VEP) and magnetic resonance imaging (MRI) examines before and 1,3 days,1,2,4,6,and 8 weeks after injury;56 rats in group 2 were randomly divided into 7 subgroups with 8 rats in each subgroup,and were detected by histopathologieal and terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling (TUNEL) apoptosis examines 1,3 days,1,2,4,6,8 weeks after injury;2 rats in group 3 were examined by electron microscopy 4 and 8 weeks aher injury.According to the degree of injury,the injured eyes were divided into 2 groups including severe injury group with the beat pressure of (699.14±60.79) kPa and mild injury group with the beat pressure of (243.18±20.26) kPa.The right and left eyes in rats in each group were in severe and mild injury group,respectively.Results One day after injury,the latency duration of F-VEP prolonged in severe injury group,wich differed much form which in the normal control group (P<0.05);the amplitude was gradually reduced during the first 2 weeks after injury and kept steady after that (P>0.05).The latency duration prolonged in mild injury group,and its difference with the normal control group was statistically significant (P<0.05);the amplitude was gradually reduced during the first 4 weeks after injury and kept steady after that (P>0.05).The abnormal high signal could be seen on optic nerve 1 day after injury,and was still obvious 8 weeks later.The results of histopathological examination showed ruptured capillary in ganglion cell layer 1 day after injury;retinal ganglion ceils without nucleus could be seen 4 weeks after injury.The apoptosis of positive cells was found in each layer of the retina 3 days after injury.TUNEL results indicated that the number of apoptotic positive cells increased significantly 1-2 weeks after injury.Conclusion An animal model of optic nerve injury can be successfully set up using FPI in rats.
10.Relationship Between Gene Frequency of HLA-DRB1*03 Genes and Expression of IL-18 in Chronic Hepatitis B Patients
Hua JIANG ; Qiaoxin HUANG ; Yan LI
Chinese Journal of Nosocomiology 2009;0(22):-
OBJECTIVE To study the relationship between HLA-DRB1*03 genes and expression of cytokine IL-18 in chronic hepatitis B patients.METHODS A total of 153 chronic hepatitis B patients and 138 normal healthy people were detected.HLA-DRB1*03 alleles were conducted in all the patients with polymerase chain reaction-sequence specific primer(PCR-SSP),and IL-18 was detected by ELISA.RESULTS Thirty-four individuals with chronic hepatitis B patients were HLA-DRB1*03 genes positive,the frequency was 22.22%,which was higher than the frequency of HLA-DRB1*03 in heathy individuals.The average level of IL-18 in chronic hepatitis B patients with HLA-DRB1*03 negatives was significantly higher than in HLA-DRB1*03 positives.CONCLUSIONS HLA-DRB1*03 closely relates with susceptibility to chronic hepatitis B.In chronic hepatitis B patients,the average level of Th1 cytokines in HLA-DRB1*03 negatives is higher than that in HLA-DRB1*03 positives.