1.Content Determination of Astragaloside Ⅳ in Qingshen Jianfei Tablets by HPLC-ELSD
Zhan LI ; Mei-Rong LI ; Guo-Qiong LUO ; Qun RUAN ;
Chinese Journal of Information on Traditional Chinese Medicine 2006;0(11):-
Objective To establish a HPLC-ELSD method for determining the content of astragaloside Ⅳ in Qingshen Jianfei Tablets. Methods Stationary phase was C_(18) column (4.6 mm?250 mm, 5 ?m), mobile phase was acetonitrice-water (35 : 65). The evaporation temperature was 120 ℃, the pulverization temperatire was 80 ℃, the flow rate was 1.6 mL/min and column temperature was 35 ℃. Results The standard curve was linear within the range of 1.03~8.24 ?g, r=0.9999. The average recovery was 99.35% with RSD = 1.36% (n = 6). Conclusion The established method is simple and accurate, with good reproducibility and high precision, and suitable for the determination of astragaloside Ⅳ in Qingshen Jianfei Tablets.
2.Prevalence survey on pterygium among people aged 40 and above in Hengli Town of Dongguan
Zhong-Ling, LUO ; Li-Xin, ZHANG ; Guo-Ping, ZHU ; Gan-Mei, XIANG ; Xiao-Fang, LUO
International Eye Science 2014;(7):1292-1294
AlM:To investigate the prevalence of pterygium of the household population aged 40 and above in Hengli Town of Dongguan.
METHODS: Using the method of cluster random sampling, select 3 628 people aged 40 and above in four villages and one community for visual examination, intraocular pressure check, slit lamp examination and questionnaire.
RESULTS: The actual number of subjects was 3 393 people, and examination rate was 93. 52%. We detected 843 patients with pterygium. The prevalence of pterygium was 24. 85%.
CONCLUSlON:There is high prevalence of pterygium in Dongguan area. The prevalence of pterygium is related with age and working environment, but has no relation with gender.
3.APPLICATION OF TRICKLING FILTERS IN TREATMENT OF WASTEWATER FROM GAS-GENERATING WITH HEAVY OIL
Guo-Qu ZENG ; Mei-Ying XU ; Yong-Hua LUO ; Wen-Juan CAI ; Guo-Ping SUN ;
Microbiology 1992;0(04):-
A research combined trickling filter system and active sludge aeration system was applied in the treatment of industrial wastewater from gas-generating with heavy oil. The wastewater contained both high contents of NH+4-N and mixed hydrocarbons including various PAHs. Its BOD5/COD ratio was less than 0.3 and belongs to recalcitrant, toxic wastewater. The results showed a touch-growth biofilms system was formed on the porous packing material and it played a key role in the decrease of toxicity of the influent. It could also improve the biodegradability of the wastewater.
4.The value of immunocytochemistry in differentiating benign and malignant serous effusion.
Ping MEI ; Xin-lan LUO ; Yan-hui LIU ; Heng-guo ZHUANG ; Wei ZHANG ; Guo-yan CHEN
Chinese Journal of Pathology 2005;34(6):368-369
Adenocarcinoma
;
diagnosis
;
pathology
;
Adult
;
Aged
;
Aged, 80 and over
;
Ascitic Fluid
;
chemistry
;
Cadherins
;
analysis
;
Calbindin 2
;
Carcinoembryonic Antigen
;
analysis
;
Diagnosis, Differential
;
Epithelial Cells
;
chemistry
;
Female
;
Humans
;
Immunohistochemistry
;
Keratin-5
;
analysis
;
Male
;
Middle Aged
;
Pericardial Effusion
;
chemistry
;
diagnosis
;
Pleural Effusion
;
chemistry
;
diagnosis
;
Pleural Effusion, Malignant
;
chemistry
;
diagnosis
;
S100 Calcium Binding Protein G
;
analysis
5.The mechanism of rosiglitazone compound based on network pharmacology.
Yu BAI ; Xue-mei FAN ; Han SUN ; Yi-ming WANG ; Qiong-lin LIANG ; Guo-an LUO
Acta Pharmaceutica Sinica 2015;50(3):284-290
Applications of network pharmacology are increasingly widespread and methods abound in the field of drug development and pharmacological research. In this study, we choose rosiglitazone compound as the object to predict the targets and to discuss the mechanism based on three kinds of prediction methods of network pharmacology. Comparison of the prediction result has identified that the three kinds of prediction methods had their own characteristics: targets and pathways predicted were not in accordance with each other. However, the calcium signaling pathway could be predicted in the three kinds of methods, which associated with diabetes and cognitive impairment caused by diabetes by bioinformatics analysis. The above conclusion indicates that the calcium signaling pathway is important in signal pathway regulation of rosiglitazone compound, which provides a clue to further explain the mechanism of the compound and also provides a reference for the selection and application of methods of network pharmacology in the actual research.
Calcium Signaling
;
Cognitive Dysfunction
;
Computational Biology
;
Diabetes Mellitus
;
Humans
;
Pharmacology
;
methods
;
Thiazolidinediones
;
pharmacology
6.Screen and Optimization of Cultured Medium Constituents for Biodegradation of ?-cypermethrin,a Synthetic Pyrethroid Insecticide,by Fusarium sp. Strain HG-P-01 via Central Composite Rotatable Design
Guo-Hua ZHONG ; Yue HE ; Jian-Jun LUO ; Shan GUAN ; Mei-Ying HU ;
Microbiology 1992;0(05):-
By means of comparing biomasses of biodegradation fungi,Fusarium sp.HG-P-01 for ?-cypermethrin,a synthetic pyrethroid insecticide used widely in China,in five different media,the Czapek-Dox medium was selected as the best medium for mycelia growth.Furthermore,an experiment of central composite rotatable design(CCRD) was used to optimize the content of nutrient components.The optimal composition of C,N and P in media for HG-P-01 were 20.94 g/L,1.82 g/L and 1.66 g/L,respec-tively,in which an expectant or real rate of ?-cypermethrin-degradation got to 96.34% or 93.78% by HPLC for a concentration of 50 mg/L after 24 h treatment.The predicted value in degradation rate model was con-sistent with that from HPLC method.
7.Effects of G-CSF on calcium, sodium and potassium ion channel currents of ischemic atrial myocytes in guinea pig
Tao LUO ; Mei GUO ; Chenglong SHI ; Min ZHOU ; Zhongwei JIA ; Kui PU
Chinese Journal of Pathophysiology 2017;33(5):857-864
AIM:To observe the effects of granulocyte colony-stimulating factor (G-CSF) on calcium, sodium and potassium ion channel currents of the ischemic atrial myocytes in guinea pig by whole-cell patch clamp technique.METHODS:The guinea pig atrial myocytes were obtained by enzymolysis.Under ischemia and hypoxia condition, whole-cell patch clamp was used to observe the effects of G-CSF at various concentrations on the changes of the I-V curve, activation curve and availability of L-type calcium channel current (ICa,L) and voltage-dependent sodium channel current (INa), as well as I-V curve of delayed rectifier potassium channel current (IK).RESULTS:Under ischemic condition, the I-V curves of ICa,L were changed by acute G-CSF intervention in a dose-dependent fashion.Except for G-CSF at dose of 300 μg/kg, the other concentrations of G-CSF did not change the activation curve and availability of ICa,L, indicating that the effects of G-CSF on ICa,L were in a voltage-independent fashion.The I-V curves of ICa,L under ischemic condition were gradually approaching the normal levels by the higher dose of G-CSF, while the effect of 300 μg/kg G-CSF on ICa,L was similar to 100 μg/kg G-CSF.Acute G-CSF intervention at different doses did not change I-V curve, activation curve, and availability or steady-state availability of INa.As a part of IK, the rapid activating component (IKr) was improved by 100 μg/kg and 300 μg/kg G-CSF intervention with the similar effects, while the slowly activating component (IKs) was not changed by G-CSF.CONCLUSION:G-CSF affects ion channel electrophysiological properties of ischemic atrial myocytes in a voltage-independent but concentration-dependent manner, thus reducing the incidence of atrial arrhythmia.
8.Study on inhibitory effects and mechanism of lipophilic components in Salvia miltiorrhiza on angiogenesis in vitro.
Xue-Mei FAN ; Gui-Xiang REN ; Qiong-Lin LIANG ; Yi-Ming WANG ; Guo-An LUO
China Journal of Chinese Materia Medica 2014;39(4):744-747
In this study, the human umbilical vein endothelial cell model was used to study the regulating effect of lipophilic components in Salvia miltiorrhiza on angiogenesis, and explore its possible mechanism. The cell model was established to determine the effect of lipophilic components in S. miltiorrhiza on the proliferative activity and migration capacity of endothelial cells. Then the realtime fluorescence quantification PCR technology was applied to detect the changes in the gene expressions of angiogenesis-related cytokines VEGF-A, VEGF-C and MMP-9. The results showed that 5 mg x L(-1) lipophilic components in S. miltiorrhiza could inhibit the proliferation and migration of endothelial cells, and reduce the expression of VEGF-A and MMP-9 genes. It indicated that lipophilic components in S. miltiorrhiza may inhibit the proliferation and migration of endothelial cells by inhibiting the expression of VEGF-A and MMP-9 genes, so as to show the inhibitory effect on angiogenesis.
Angiogenesis Inhibitors
;
chemistry
;
pharmacology
;
Cell Movement
;
drug effects
;
Cell Proliferation
;
drug effects
;
Drugs, Chinese Herbal
;
chemistry
;
pharmacology
;
Human Umbilical Vein Endothelial Cells
;
cytology
;
drug effects
;
metabolism
;
Humans
;
Matrix Metalloproteinase 9
;
genetics
;
metabolism
;
Salvia miltiorrhiza
;
chemistry
;
Vascular Endothelial Growth Factor A
;
genetics
;
metabolism
9.Bladder installation of alkaline lidocaine for the treatment of ketamine-associated cystitis
Hui WEI ; Ying HUANG ; Xiaozhong ZHANG ; Zhigang CHEN ; Guo LI ; Xujie LUO ; Shaohong FANG ; Shaowen WU ; Hua MEI
Chinese Journal of Urology 2010;31(9):621-623
Objective To evaluate the efficacy and safety of intravesical alkalised lidocaine therapy for the treatment of ketamine-associated cystitis. Methods From 2008 to 2009,7 cases of patients (6 males and 1 female; mean age 26 years) were admitted with severe lower urinary tract symptoms (LUTS). Three cases had painful hematuria. All cases had history of abuse ketamine. B ultrasound examination revealed marked thickness of the bladder wall and small bladder capacity. Urodynamic study were performed showing the functional bladder capacities between 20 to 100 ml(average 50 ml),Qmax between 3.7 to 10.8 ml/s, RUV between 0 to 24 ml. Urodynamic analyses showed hypersensitive bladder and decreased bladder compliance. Cystoscopy showed diffuse reddish swelling of the bladder mucosa and hemorrhagic cystitis. All patients were required to withdraw the ketamine and treated with bladder hydrodistention therapy (intravesical alkalised lidocaine with heparin). Results The biopsies of 2 patients showed bladder wall inflammation and fibrosis. LUTS was significantly relieved after bladder installation within 7 days. The functional bladder capacities increased between 150±30 ml,Qmax 11.5±3.8 ml/s. Four cases became asymptomatic. Three recurrent cases after reabused ketamin for 1 to 3 months received same intraversical treatment. All cases were followed up for 2 to 17 months. Conclusion Intravesical hydrodistention therapy with alkalised lidocaine and heparin could be the safe and effective therapy in the treatment of katamine-associated cystitis.
10.Related factors on patients with depression related to Alzheimer's disease based on the improved cumulative logistic regression
Yan-Hong LUO ; Zhi-Xin GUO ; Jin-Yao WANG ; Yong-Mei AI ; Pei-Cui CHEN ; Hong-Mei YU
Chinese Journal of Epidemiology 2012;33(8):788-791
Objective To explore the determinants of Alzheimer' s disease (AD) patients with depression.Methods The degree of depression on AD patients was assessed by the geriatric depression scale.Improved cumulative logistic regression (ICLR) was used to analyze the determinants of AD patients with depression.Results 196 AD patients were investigated.Among the 196 AD patients,there were 60(30.6% ) males and 136(69.4% ) females,at 58-89 years of age (72.3 ± 6.0).Physical activity,diabetes,MoCA,hearing,economic sources and alcohol were related to the degree of depression of AD patients (P<0.10 ).The difference between “normal” and “mild depression” was smaller than difference between “mild depression” and “severe depression”.Conclusion AD patients with mild depression were the target population for prevention and they were influenced by several factors listed above.