1.Text mining-based annotation of high-throughput cancer genome data
Yan LIU ; Yueping SUN ; Zhen GUO ; Li HOU ; Jiao LI
Chinese Journal of Medical Library and Information Science 2016;25(12):34-39
The implementation of cancer genome scientific program has promoted the diagnosis, prevention and tar-get treatment of diseases at molecular level with massive cancer genome data accumulated. Effective mining and use of cancer genome data have thus become the focus in the field of cancer genome. The cancer genome was annotated and demonstrated according to the mining of high-throughput cancer genome data from American National Cancer Research Center, namely the disease-named entity and drug-named entity were identified from the gene function descriptive text and the mined high-throughput data were annotated from their clinical application, in order to help scientific workers to find the relationship between diseases, drugs and genes in scientific literature.
2.Control study of regional cerebral blood flow in both effective treated and incomplete controlled patients of idiopathic generalized tonic clonic seizure
Kai-Yan WANG ; Chuan-Zhen LV ; Zhen HONG ; Xing-Dang LIU ; Min HOU ;
Chinese Journal of Neurology 2001;0(03):-
Objective To explore sub-clinical items in evaluating the prognosis of epileptic patients,the study on differences of regional cerebral blood flow (rCBF) in both effective treated and incomplete-controlled patients with idiopathic generalized tonic clonic seizure (GTCS) was carried out.Methods Interictal rCBF measurements using 99m Tc-ethyl cysteinates dimmer (ECD) SPECT was performed on 29 effective treated idiopathic GTCS patients and 12 incomplete controlled idiopathic GTCS patients. The rCBF distribution was semi-quantitatively analyzed by regions of interest (ROIs) comparing with abnormal rate of interictal hypoperfusion rCBF,clinical seizure time and EEG.Results ROI analysis showed that rCBF decreased in basal ganglia and thalamus of incomplete controlled patients with idiopathic GTCS compared to that of effective treated ones′ significantly ( P
3.Discovery and integration of information resources in relation with precision medicine research
Hong-Yu KANG ; Jiao LI ; Yan LIU ; Zhen HOU ; Li HOU
Chinese Journal of Medical Library and Information Science 2017;26(11):1-6
After the information resources of precision medicine, such as frontier information, research advances and enterprise status, were integrated according to the data of precision medicine in USA and United Kingdom, the unified criteria for integrating the meta-data of precision medicine were worked out in order to analyze, store and update them, and could thus provide comprehensive, integrated and multivariate knowledge service of precision medicine for clinicians, researchers and decision makers engaged in research of precision medicine.
4.High level expression of α-CGTase and optimize biotransformation conditions of AA-2 G
Lin XING ; Xiuhua ZHANG ; Qianqian ZHAO ; Fei LIU ; Zhen YAN ; Mian CHEN ; Zhongwen HOU ; Xiqiang ZHU ; Peixue LING
Chinese Journal of Biochemical Pharmaceutics 2016;36(11):5-8
Objective To construct a prokaryotic expression vector in BL21 to secretorily expressα-Cyclodextrin Glycosyltransferase(α-CGTase). Methods α-CGT gene was amplified from Bacillus macerens genome by PCR.pET26b and α-CGT gene were connected after digested with Nco I, Xho I respectivly, and then transformed into Escherichia coli BL21 strain.α-CGTase was expressed in fermentation culture medium and AA-2G was prepared by using α-CGTase, VC and starch.Results α-CGTase was expressed secretorily and the enzyme activity was up to 120 U/mL.AA-2G was prepared by the biotransformation of VC and starch using α-CGTase which proved to be correct by HPLC.Conclusion AA-2G was prepared by using self-madeα-CGTase, after optimized the preparation conditions the yield of AA-2G was 17.46 g/L, and the conversion rate reached 58.2%(mg/mg).
5.The rheology properties of common hydrophilic gel excipients.
Yan-Long HOU ; He-Ran LI ; Ya-Nan GAO ; Yan WANG ; Qi-Fang WANG ; Lu XU ; Zhen-Yun LIU ; Hong-Tao CHEN ; San-Ming LI
Acta Pharmaceutica Sinica 2014;49(8):1181-1187
To investigate theological properties of common hydrophilic gel excipients such as Carbopol based on viscosity, the viscosity was determined by rotation method and falling-ball method. Linear regression was made between ln(eta) and concentration, the slope of which was used to explore the relation between viscosity and concentration of different excipients. The viscosity flow active energy (E(eta)) was calculated according to Arrhenius equation and was used to investigate the relation between viscosity and temperature of different excipients. The results showed that viscosities measured by two methods were consistent. Concentration of guargum (GG) and hydroxypropylmethyl cellulose (HPMC) solution had a great influence on the viscosity, k > 5; while concentration of polyvinylpyrrolidone-K30 (PVP-K30) and polyethylene glycol 6000 (PEG6000) exerted a less effect on viscosity, k < 0.2; viscosity flow active energy of different excipients were close, which ranged from 30 to 40 kJ x mol(-1). Therefore, theological properties study could provide the basis for application of excipients and establish a foundation for the research of relation between excipients structure, property and function.
Excipients
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chemistry
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Gels
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chemistry
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Polyethylene Glycols
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chemistry
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Polyvinyls
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chemistry
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Povidone
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chemistry
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Rheology
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Temperature
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Viscosity
6.Danshen Modulates Nrf2-mediated Signaling Pathway in Cisplatin-induced Renal Injury
CAO SI-SI ; YAN MIAO ; HOU ZHEN-YAN ; CHEN YING ; JIANG YUN-SHENG ; FAN XIN-RONG ; FANG PING-FEI ; ZHANG BI-KUI
Journal of Huazhong University of Science and Technology (Medical Sciences) 2017;37(5):761-765
Danshen,an efficacious agent for cardiovascular diseases,has been found to play an essential role in kidney injury.In the present study,the effect of Danshen on cisplatin-induced renal dysfunction was investigated in a mouse model.Danshen was administered to mice at a dose of 3 g/kg 4 days before and 3 days after cisplatin treatment.A single intraperitoneal injection of 20 mg/kg cisplatin was used to induce nephrotoxicity.The mice were sacrificed 72 h after cisplatin intoxication.Biochemical parameters including serum creatinine and blood urea nitrogen were analyzed.Histopathological changes of kidney tissues were detected using HE staining.Antioxidant enzymes (GSH-Px and SOD) and peroxidative product (MDA) were detected.Protein expressions of Nrf2 and its target genes including HO-1 and NQO1 were measured by Western blotting.The results showed that pretreatment with Danshen significantly reduced serum creatinine and blood urea nitrogen in the cisplatin-treated mice.Histopathological examination showed that Danshen mitigated the renal damage induced by cisplatin.Moreover,Danshen restored the activities of antioxidant enzymes (GSH-Px and SOD) and normalized the MDA contents in renal tissues.Western blotting revealed that Danshen enhanced the expressions of Nrf2 and its target genes in cisplatin-exposed mice.It was suggested that Danshen protects against the cisplatin-induced renal impairment in the mice,which is potentially associated with the upregulation of Nrf2-mediated signaling pathway.
7.A study on relationship between the contour of articular eminence and traces of the condylar kinematic center and its application in TMD patients.
Zhen-Gang HOU ; Hai-Lan FENG ; Zhuo-Zhao ZHENG ; Yan-Ping ZHAO
Chinese Journal of Stomatology 2004;39(1):70-72
OBJECTIVETo investigate the relationship between the contour of articular eminence and traces of the condylar kinematic center during jaw opening movement in healthy subjects, and compare trace characteristics of condylar kinematic center and MRI findings in TMD patients.
METHODSIn 10 healthy subjects, jaw-opening motion was recorded. The kinematic center and terminal hinge axis point of the condyle were used as trace reference points. The contour of articular eminence was examined by MRI. Seven patients with TMD signs and/or symptoms (disk displacement) were selected for this study. The condylar trace was recorded during jaw protrusion and opening-closing. The internal derangement in temporomandibular joints was detected by MRI and defined as: (1). normal disk position, (2). disk displacement with reduction, (3). disk displacement without reduction.
RESULTSIn healthy subjects, most of the opening traces of the kinematic center coincided with the contour of articular eminence (8/10 joints in left, 9/10 joints in right). For terminal hinge axis point, no trace coincided with the contour of articular eminence (0/20 joints in left and right). In TMD patients, according to MRI findings, the condylar traces of kinematic center in 3 normal disk position joints showed normal shape. However, in 6 disk displacements with reduction joints and 5 disk displacement without reduction joints, the condylar traces of kinematic center showed irregular patterns except 1 disk displacement with reduction joint.
CONCLUSIONSIn comparison with the terminal hinge axis point, the opening traces of the kinematic center can be interpreted as the translatory movement of the condyle/disc along the articular eminence. The study suggests the use of kinematic center in condylar movement studies.
Adolescent ; Adult ; Humans ; Magnetic Resonance Imaging ; Mandibular Condyle ; physiology ; Temporomandibular Joint ; physiology ; Temporomandibular Joint Disorders ; physiopathology
8.Adverse Outcome of Cesarean Scar Pregnancy Managed Expectantly
Zhen-yan HAN ; Yuan ZHANG ; Hong-ying HOU
Journal of Sun Yat-sen University(Medical Sciences) 2019;40(6):953-960
:【Objective】Toprovidefurtherevidenceoftheassociationbetweencesareanscarpregnancy(CSP)and placentaincreta,andtoinvestigatetheriskofexpectantmanagementofCSP.【Methods】Aretrospectivereviewof3women diagnosedwithCSP,whoweremanagedexpectantly,wasperformedintheThirdAffiliatedHospitalofSUNYat-sen UniversityfromJanuary2014toDecember2018.Theirclinicalcharacteristics,sonographicmanifestationandpoorout⁃ comeswereanalyzed.【Results】These3casesofCSPhad1~2previouslowersegmentcesareansectionsandtheirclinical symptomsincludedrecurrenthemorrhage,grosshematuriaandsevereabdominalpain.Amongthe3cases,thegestational ageatdiagnosisofCSPwas6+2weeks,7weeksand7+4weeks,respectively;thesonographicCSPtypewastypeⅠ,type ⅡandtypeⅢ,respectively;thegestationalageatthefirstdiagnosisofplacentaincretawas24+4weeks,12+2weeksand 13+1weeks,respectively;andall3caseswerediagnosedasplacentapercretabyultrasoundatthesecondtrimester.These 3casesofCSPwereterminatedatthesecondtrimesterwithoutlivebornneonatesbecauseofseverehemorrhage,colt tamponadeofbladderanduterinerupture;andallwereconfirmedasplacentapercretaduringsurgerywiththetotalblood lossofmorethan2500mLandwithoutmaternaldeath,andonegotapathologicaldiagnosisofplacentapercretaafter subtotal hysterectomy.【Conclusion】Placenta percreta should be noticed during the expectant management of CSP becauseof the close association between CSP and placenta increta. Natural history of CSP is usually associated with adverseoutcome,andthereforeexpectantmanagementofCSPshouldbecarefullychosen
9.Dynamic changes in Th17/Treg balance among children with seasonal allergic rhinitis
Qing MIAO ; Xi CHEN ; Yixin REN ; Yongge LIU ; Yan WANG ; Wei XU ; Zhen LI ; Hui GUAN ; Huijie HUANG ; Xiaoling HOU ; Kang ZHU ; Qi GAO ; Yaru WANG ; Li XIANG
Chinese Journal of Microbiology and Immunology 2017;37(5):355-360
Objective To investigate the levels and significance of Th17 cells and regulatory T cells (Treg) in peripheral blood of children with allergic rhinitis during pollen and non-pollen seasons.Methods Thirteen children with hay fever, 10 children with house dust mite(HDM)-allergic asthma and 10 healthy children were recruited into this study.Percentages of Th17 and Treg cells were detected by flow cytometry.Levels of IL-17, IL-10 and TGF-β in cell culture supernatants were measured by ELISA.Results (1) The percentages of Th17 cells in children with allergic rhinitis [(3.4±2.4)%] were significantly higher than those in HDM-allergic asthmatics [(2.1±1.6)%] and those in healthy children [(0.5±0.3)%] during pollen season (both P<0.05).The levels of Treg cells in allergic rhinitis group [(2.1±1.3)%] and in HDM-allergic asthma group [(3.6±1.9)%] were significantly lower than those in healthy control group [(5.5±2.8)%] (both P<0.05).The levels of Th17 cells [(3.0±1.9)% vs (3.4±2.4)%, P<0.05] and ratios of Th17/Treg cells [(1.4±1.0)% vs (1.7±1.5)%, P<0.05] in children with allergic rhinitis were significantly decreased during non-pollen season as compared with those during pollen season, but the levels of Treg cells were up-regulated [(2.4±1.6)% vs (2.1±1.3)%, P<0.05].(2) Correlation analysis revealed that the ratios of Th17/Treg cells were positively correlated with the concentrations of FeNO (fractional concentration of exhaled NO) (r=0.321, P<0.05) and the counts of circulating eosinophils (r=0.198, P<0.05) in children with allergic rhinitis during pollen season.Conclusion The imbalanced Th17 and Treg cells in children with allergic rhinitis during pollen season might play a vital role in the regulation of allergic airway inflammation.
10.The diagnostic value of platelet glycoprotein-specific autoantibody detection in idiopathic thrombocytopenic purpura.
Hai-Yan ZHANG ; Ming HOU ; Xiao-Hong ZHANG ; Xiang-Hong GUAN ; Gui-Zhen SUN
Journal of Experimental Hematology 2004;12(2):204-206
To detect levels of platelet glycoprotein-specific autoantibody in idiopathic thrombocytopenic purpura (ITP), chronic aplastic anemia (CAA), hematologic malignancies and healthy volunteers, and evaluate the clinical significance of platelet glycoprotein-specific autoantibody level in diagnosis for ITP, anti-GPIb/IX, anti-GPIIb/IIIa, anti-GPIV and anti-GPV auto-antibodies were detected contemporaneously by a modified monoclonal antibody immobilization of platelet antigen assay (modified MAIPA). The results showed that the total positive rate of antibodies against platelet GPIb/IX, GPIIb/IIIa, GPIV, GPV were 69.99%, 10%, 20% and 0% in ITP, CAA, hematologic malignancy group and healthy volunteers respectively. There was significant difference between ITP and CAA (chi(2) = 20.71, P < 0.005), between ITP and hematologic malignancy group (chi(2) = 12.22, P < 0. 005). There was no positive finding in the healthy control. It is concluded that platelet glycoprotein-specific autoantibody has high value for the diagnosis of ITP,many kinds of antibodies detection at one time can enhance sensitivity, MAIPA is a specific assay for the diagnosis of idiopathic thrombocytopenic purpura.
Adolescent
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Adult
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Aged
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Autoantibodies
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blood
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Child
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Female
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Humans
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Male
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Middle Aged
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Platelet Membrane Glycoproteins
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immunology
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Purpura, Thrombocytopenic, Idiopathic
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diagnosis
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immunology
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Sensitivity and Specificity