1.THE PHARMACOKINETICS OF LUTEOLIN
Minzhu CHEN ; Renjun FENG ; Yazhen GU
Chinese Pharmacological Bulletin 1986;0(05):-
The pharmacokinetics of Luteolin ( Lut ) solution in rabbits and rats was investigated. Lut in plasma, bile and urine as well as protocatechuic acid (which is a product of Lut) in plasma and urine were determined by fluorescence spectrophotometry. A curve with multiple peaks was fitted to the data of plasma concentration versus time, employing a nonlinear program developed with an IBM-PC computer. The results indicated that the data set obtained with 30 mg /kg doses by iv fitted well to a peculiar open 3 compartment model involved in the enterohepatic recirculation of the drug and the undulations of the drug concentration.The essential pharmacokinetics parameters (mean?SD) were as follows; The t1/2 values for the ?-phase and ?-phase were about 0.18?0.01 h and 1.66?0.24 h respectively. The apparent volume of distribution ( Vd) was about 1.43? 0.45 L?kg-1. The reabsorption rate constant ( Ka ) was 0.465? 0.08 h-1 The reabsorption percent ( F' ) was about 6.9? 2.1% . The elimination rate constant was 1.124?0.35 h-1. The clearance was 588?113 ?g?h-1?kg-1. This study indicated that Lut was rapidly removed from the blood by both kidney and liver where Lut was excreted by way of the bile into intestine from which it Was reabsorbed. The 12 h urine excretion of Lut in rabbits was in the order of 37.7% of total iv dose. In rats, the 6 h bile excretion of Lut was about 11.2% of that total iv dose. A comparison of the C-T curve of PCA with of Lut suggested that PCA was the one of the products of Lut.In rats, the 3H-Lut orally administered was widely distributed in the tissues, the concentrations being higher in liver and kidney.
2.Effect of Artesunate Tablet on Tertian Malaria: A Study of 24 Cases
Guangqian LI ; Xuelong DENG ; Renjun CHEN ; Yuzong SONG ; Xingbo GUO ;
Traditional Chinese Drug Research & Clinical Pharmacology 1993;0(02):-
24 patients suffering from tertian malaria were treated with 600 mg of artesunate tablet as a total dose in a 5-day course. The result showed that all patients were clinically cured with symptoms and signs subsided quickly. Defervescence and parasite clearance times were 19. 9?15.8 and 56. 8?17. 4 hours respectively. The recrudescent rate was 54.2% within 28 days.
3.The effect of sodium salicylate on the expression of GABAa receptor subunits in cochlear spiral ganglion neurons.
Chen YAO ; Zheng CAI ; Renjun WANG ; Huiying CHEN ; Zhihui HUANG ; Jixin QIN ; Jiping SU
Journal of Clinical Otorhinolaryngology Head and Neck Surgery 2015;29(11):1024-1029
OBJECTIVE:
To investigate mRNA expression of GABAa receptor(GABAaR) subunits in the rat cochlear spiral ganglion neurons (SGN) and explore the effect of sodium salicylate (SS) on the expression of GABAaR subunits.
METHOD:
The realtime fluorescent quantitative PCR (FQ-PCR) was used to detect mRNA expression of twelve GABAaR subunits in the newborn rat SGN and then investigate mRNA expression of GABAaR subunits after treatment with 5 mmol/L SS for 15 min, 30 min, 1 h, 3 h and 6 h in the primary culture SGN.
RESULT:
(1) GABAaR subunits of α1-6, β1-3, and γ1-3 were detected in the SGN, and the expression of GABAaR subunits was lower than those in the cerebral cortex. In the subunit α family of GABAaR, the expression rank was α2>α3/α5>α4>a1>α6, and the expression of α3 and α5 had no difference (P>0. 05). In the subunit β family, the expression rank was β3>β2>β1. In the subunit γ family, the expression rank was γ1>γ2>γ3. (2) The expression of all subunits of GABAa receptor was obviously fluctuated excepting subunit α5 after treatment with SS. At 15 min post-SS, α1, α2 , β1 and γ1-3 were upregulated, and α3 was downregulated; At 30 min post-SS, α3, β1 and β3 were upregulated, and γ1 was downregulated; At 1 h post-SS, β2 was upregulated and γ3 was downregulated; At 3 h post-SS, β1 and β2 were upregulated, and α3 and γ2 were downregulated; At 6 h post-SS, αl, α3 ,β2, β3 and γ1 were upregulated, and α2, α4 and β1 were downregulated.
CONCLUSION
The mRNA of GABAaR was expressed in the rat SGN, and the expression of GABAaR subunits was lower in SGN than the cerebral cortex. SS could alter the GABAaR expression quantity in rat SGN; Most of the subunits expression were elevated obviously in the early post SS (15 min), followed by a slight fluctuation.
Animals
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Cells, Cultured
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Cochlea
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cytology
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In Situ Hybridization
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Neurons
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drug effects
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RNA, Messenger
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Rats
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Receptors, GABA-A
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metabolism
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Sodium Salicylate
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pharmacology
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Spiral Ganglion
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drug effects
4.The Category C infectious diseases monitoring and analysis in Zunyi city from 2009 to 2013
Shiping WANG ; Renjun ZHANG ; Hong TAO ; Guanghui JI ; Jiayan CAO ; Wenju CHEN ; Mingwang WU
Chongqing Medicine 2015;(5):684-686,689
Objective To investigate Zunyi C Class infectious diseases ,and provide basis for formulating prevention and control measures .Methods A network report of class C infectious diseasesfrom in Zunyi city from 2009 to 2012 was statistically analyzed by Excel software ,and data analysis was conducted by descriptive epidemiological method for .Results In Zunyi city from 2009 to 2013 reported a total of 8 kinds of class C infectious diseases (68 915 cases) ,annual report incidence rate was 213 .23/10 million;the top three are hand foot and mouth disease ,mumps and other infectious diarrhea ,accounted for 62 .22% of the total reported ca‐ses ,19 .68% and 13 .44% .There was slightly higher incidence rate of the disease from March to August and the main risks were in scattered children ,kindergarten children and students ;the age of onset lie in the population under 14 years old ,the male to female ratio was 1 .67∶1 .00 (χ2 =3 445 .64 ,P<0 .01) .Conclusion Hand foot and mouth disease ,mumps ,other infectious diarrhea and other infectious disease has become an important public health problem in Zunyi city .Therefore ,the kindergarten ,school infectious disease epidemic monitoring should be strengthened ,the infectious disease outbreaks should be reduced ,and communicable disease diagnosis and reporting standards ,which is helpful to improve the epidemic situation of infectious diseases research and prevention and control level should be improved to maintain the protection of public health .
5.Thediagnosticvalueof1.5T multiparametricMRIscoringsystemfordetecting earlyprostatecancerinthecentralglandarea
Kai CHEN ; Tao LI ; Fang HU ; Hui PENG ; Renjun LI
Journal of Practical Radiology 2019;35(3):414-417
Objective Toevaluatethediagnosticvalueof1.5T multiparametricmagneticresonanceimaging (mpMRI)scoring systeminearlycentralprostatecancer(PCa).Methods DataofpatientswhoreceivedprostatempMRIfromJune2014toJune2016 wereanalyzedretrospectively.AccordingtoProstateImagingReportingandDataSystem Version2 (PIGRADS V2),a5Gscorescale wasadoptedandthetwoassociateradiologists,whowereblindedtoanyclinicaldetails,interpretedMRimages.Withthepathological resultsasthediagnosticgoldstandard,theROCcurvewasplottedandtheAUCwascalculated.Thediagnosticsensitivity,specificity, positivepredictivevalueandnegativepredictivevalue,accuracyofPCawerecalculatedunderdifferentdiagnosticthresholds(score3 or4).Results Atotalof41patientswereincludedinthestudyoutofwhich15caseswerethosewithPCaand26caseswithbenign prostatichyperplasia(BPH).TheAUCwas0.733(P=0.014).Onthediagnosticthresholdscoreof3and4,thesensitivity,specificity, positivepredictivevalue,negativepredictivevalueandaccuracywere73.33%vs40%,61.54%vs92.31%,52.38%vs75%,80%vs 72.73%and65.85%vs73.17%respectively.Conclusion The1.5T mpMRIscoringsystemisrelativelyareliabletechniquefordetecting earlyPCainthecentralglandarea.PatientscanbefollowedGupwithprostatespecificantigen(PSA)whenthescoreislessthan3,and ascoreof4ormoreishighlysuggestiveofPCa.
6.Based on the National Patent Database to analyze the medication rule of Traditional Chinese Medicine compounds for the treatment of colorectal cancer
Menglong ZOU ; Xiaoyan HUANG ; Yalu CHEN ; Xin NING ; Renjun MENG ; Shumin YU
International Journal of Traditional Chinese Medicine 2022;44(6):680-684
Objective:Based on the National Patent Database, this paper analyzes the medication rule of Traditional Chinese Medicine (TCM) compound patents for the treatment of colorectal cancer in the past 10 years.Methods:By searching for and extracted screening out TCM compound patents for the treatment of colorectal cancer and after the dada selection, data entry , data specifications, the compound patents database for the treatment of colorectal cancer was established. then used IBM SPSS Modeler and IBM SPSS Statistics software to perform frequency analysis, attribute analysis, association analysis and cluster analysis of TCM.Results:A total of 97 compound patents were included, including 411 TCM, among which the core medicines are Atractylodis macrocephalae rhizoma, Hedyotis diffusa, Astragali radix, Glycyrrhizae radix et rhizoma, Scutellariae barbatae herba, Poria, etc. The medicine is mainly cold and warm; The medicine mainly tastes bitter and sweet; The spleen meridian is the main meridian. The cluster analysis result shows there are 7 categories, and the paired TCM with strong correlation includes Hedyotis diffusa- Scutellariae barbatae herba, Atractylodis macrocephalae rhizoma- Curcumae rhizoma, Astragali radix- Codonopsis radix and so on. Conclusions:Treating colorectal cancer should take those medicine which could invigorate the spleen and nurture the deficiency, such as Atractylodis macrocephalae rhizoma, Astragali radix, Codonopsis radix, while for clearing away heat, detoxifying, promoting blood circulation and removing blood stasis, such as Hedyotis diffusa, Scutellariae barbatae herba, and Curcumae rhizoma. At the same time, it can be combined as appropriate, attacking and replenishing simultaneously, regulating qi and blood.
7.Effect of different traction weight on preventing leakage of urine in elderly patients with indwelling urethral catheterization
Xiaoqing CHEN ; Renjun FENG ; Min SUN
Chinese Journal of Modern Nursing 2017;23(16):2164-2166
Objective To explore the appropriate traction weight of traction method for the prevention of leakage of urine in elderly patients with indwelling urethral catheterization so as to provide a theoretical basis for clinical work.Methods A total of 120 indwelling urethral catheterization patients with leakage of urine in department of geriatrics of Jiangdu People's Hospital of Yangzhou (affiliated Hospital of School of Medicine, Yangzhou University) were selected by convenient sampling from January 2014 to August 2016. They were randomly divided into four groups and accepted traction method for the prevention of leakage of urine involving traction weight with 50, 100, 150, 200 g. The preventive effect and situation of comfort of patients were compared among four groups.Results The effective rate in prevention of leakage of urine of traction weight with 50, 100, 150, 200 g was 16.7%, 100%, 100%, 100% with a statistically significant difference among four groups with different traction weight (Hc=73.849,P<0.001). The results of intercomparsion showed that the effects of groups with traction weight of 100, 150, 200 g were statistically better than that of the group with traction weight of 50 g (χ2 = 42.857,P<0.001). There were statistically significant differences in degree of comfort among four groups with different traction weight (Hc=57.674,P<0.001). Compared with the group with traction weight of 150 g, the incidence of moderate or severe discomfort was 70% in the group with traction weight of 200 g with a significant difference (χ2=19.817,P<0.001). There was no statistically significant difference in the incidence of moderate or severe discomfort between the group with traction weight of 100 g and 150 g (χ2= 0.162,P=0.688).Conclusions The optimum traction weight for the prevention of leakage of urine in elderly patients with indwelling urethral catheterization is 100-150 g.
8.Preoperative evaluation of multi-slice spiral computed tomography angiography in laparoscopic radical operation for colorectal carcinoma.
Runshu DENG ; Linyao MO ; Xihua HE ; Jianhua CHEN ; Renjun CAI ; Zaiguo WANG ; Shichuan HUANG ; Huanquan LU ; Zhaolun HUANG ; Zhiming WU
Chinese Journal of Gastrointestinal Surgery 2016;19(3):308-311
OBJECTIVETo investigate the clinical application of 256 multi-slice spiral computed tomography angiography (MSCTA) technique in the preoperative evaluation of mesenteric angiography in order to provide a reference to vessel anatomy and dissociation in laparoscopic radical operation for colorectal carcinoma.
METHODSClinical data of 50 patients with colorectal cancer who underwent preoperative MSCTA+FDCT and laparoscopic curative operation at our hospital from October 2013 to March 2015 were collected (MSCTA group). The evaluation item was visualization of mesenteric artery, which was compared with the findings under laparoscopic surgery. Meanwhile, another 50 colorectal cancer patients undergoing laparoscopic radical operation by the same surgeon team without preoperative MSCTA examination were used as control(control group). Clinical data were compared between the two groups.
RESULTSMSCTA precisely and correctly demonstrated anatomy and variations of the mesenteric artery and relative nutrient vessel in carcinoma. The angiography reconstruction images were consistent with the visual anatomy and variation from laparoscopic findings, whose diagnostic conformity rate of 100%. As compared to control group, operative time was shorter [(195.0±23.2) minutes vs.(218.0±19.6) minutes, t=8.326, P=0.015], and blood loss was less[(168.1±18.8) ml vs. (206.5±14.3) ml, t=-19.369, P=0.002] in MSCTA group. Differences of number of harvested lymph node, postoperative complication morbidity, postoperative hospital stay and hospitalization cost were not significant between two groups(all P>0.05).
CONCLUSIONPreoperative MSCTA can demonstrate anatomy and variations of the mesenteric artery precisely and correctly, thus it is beneficial to shorten the operation time and to reduce blood loss.
Angiography ; Colorectal Neoplasms ; diagnostic imaging ; surgery ; Humans ; Image Processing, Computer-Assisted ; Laparoscopy ; Lymph Nodes ; Mesenteric Arteries ; diagnostic imaging ; Operative Time ; Tomography, Spiral Computed
9.Lenalidomide combined with decitabine for acute myeloid leukemia with germline/somatic DDX41 mutation:a case report and literatures review
Renjun BAO ; Yuhua FU ; Yonghua YAO ; Li CHEN ; Ti ZHANG ; Chenglin YE
Tumor 2023;43(1):53-60
Objective:The paper seeks to explore the characteristics of myeloid tumors with genetic DDX41 gene mutations,especially focusing on the understanding and treatment of acute myeloid leukemia with germline/somatic DDX41 mutation. Methods:One AML patient with germline/somatic DDX41 mutation who was diagnosed by using morphology,immunology,cytogenetics and molecular biology in Shanghai Shidong Hospital was retrospectively analyzed,and the patient was treated with lenalidomide combined with decitabine,and the literatures were reviewed. Results:The patient obtained complete remission after the therapy and there were no relevant adverse reactions to the treatment. Conclusion:The DDX41 gene mutations have effects on the prognosis and treatment of myeloid malignancies,and lenalidomide combined with decitabine is effective in acute myeloid leukemia with germline/somatic DDX41 mutation.The germline mutation status should be identified and confirmed early.
10.The protective effect of dexmedetomidine on sevoflurane-induced cognitive impairment based on the Wnt/β-catenin signaling pathway
Yong YANG ; Renjun CHEN ; Jianling GE ; Wei WANG
The Journal of Practical Medicine 2024;40(15):2063-2068
Objective To study the protective effect and possible mechanism of dexmedetomidine on sevoflurane-induced cognitive impairment.Methods 40 rats were randomly divided into a blank group,model group,dexmedetomidine group,and combination group,10 for each group.A rat model of sevoflurane-induced cognitive impairment was established in the model group,dexmedetomidine group,and combination group.The dexmedetomidine group and combination group were intraperitoneally injected with dexmedetomidine of 50 μg/kg 30 min before modeling,so was the combination group injected with sulindac of 5 mg/kg.The blank group and model group were intravenously injected with equal amount of saline.Morris water maze test was used to detect cognitive function.Enzyme-linked immunosorbent assay(ELISA)was used to detect serum levels of homocysteine(Hcy)and monocyte chemoattractant protein-1(MCP-1);high-performance liquid chromatography was used to detect hippocampal glutamate(Glu)and γ-aminobutyric acid(GABA)contents.Immunoblotting was used to detect hippocampal glycogen synthase kinase 3β(GSK-3β)and β-catenin protein expression levels.Results The escape latency in the dexmedetomidine group rats was shorter than that in the model group(P<0.05),the number of crossing the original platform was greater than that in the model group(P<0.05),and duration staying in the original platform quadrant was longer than that in the model group(P<0.05).The escape latency in the combination group was longer than that in the dexmedetomidine group(P<0.05),the number of crossing the original platform was smaller than that in the dexmedetomidine group(P<0.05),and duration staying in the original platform quad-rant was shorter than that in the dexmedetomidine group(P<0.05).Serum levels of Hcy and MCP-1 were higher in the model group than in the blank group(P<0.05),lower in the dexmedetomidine group than in the model group(P<0.05),and higher in the combination group than in the dexmedetomidine group(P<0.05).Hippocam-pal Glu content was higher in the model group than in the blank group(P<0.05),while GABA content was lower(P<0.05).Hippocampal Glu content was lower in the dexmedetomidine group than in the model group(P<0.05),whereas GABA content was higher group(P<0.05).Hippocampal Glu content was higher in the combination group than in the dexmedetomidine group(P<0.05),and GABA content was lower(P<0.05).Hippocampal GSK-3β protein expression level was higher in the model group than in the blank group(P<0.05),but the β-catenin protein expression level was lower(P<0.05).Hippocampal GSK-3β protein expression level was lower in the dexmedetomidine group than in the model group(P<0.05),while β-catenin protein expression level was higher(P<0.05).Hippocampal GSK-3β protein expression level was higher in the combination group than in the dexme-detomidine group(P<0.05),whereas β-catenin protein expression level was lower(P<0.05).Conclusions Dexmedetomidine may improve cognitive function in rats with sevoflurane-induced cognitive impairment by activat-ing the Wnt/β-catenin signaling pathway,reducing inflammation,and enhancing neurotransmitter activity.