1.Clinical analysis of 79 gastrointestinal tract stromal tumor cases.
Zi-min LIU ; Jun LIANG ; Zhuang YU
Chinese Journal of Oncology 2011;33(7):552-553
Adult
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Aged
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Antineoplastic Agents
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therapeutic use
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Benzamides
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Chemotherapy, Adjuvant
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Female
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Follow-Up Studies
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Gastrointestinal Neoplasms
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drug therapy
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surgery
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Gastrointestinal Stromal Tumors
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drug therapy
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secondary
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surgery
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Humans
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Imatinib Mesylate
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Liver Neoplasms
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secondary
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Male
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Middle Aged
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Neoplasm Recurrence, Local
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Piperazines
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therapeutic use
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Pyrimidines
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therapeutic use
2.Nerve Stem Cells Orientation Differentiation in Neonatal Rat Hippocampus Induced by Brain-Derived Neurotrophic Factor in Vitro
jun-feng, YU ; zi-jin, YANG ; wei-hong, ZHANG
Journal of Applied Clinical Pediatrics 2006;0(14):-
Objective To explore the influence of brain-derived neurotrophic factor (BDNF) on the differentiation of nerve stem cells (NSCs) from neonatal rat hippocampus in vitro and to find new revulsant of NSCs,which can improve the percentage of NSCs differentiating into neurons.Methods Twenty-four hours neonatal rats were selected to obtain hippocampus tissue to culture NSCs in serum-free culture medium by suspending culture.The high pure NSCs were obtained after passing 2 generations.The culture cells were identified as NSCs by staining of nestin,which was NSCs special marker.After passaged three generations,the NSCs were randomly classified into 2 groups:test group and control group.There were 15 pieces per group.There was 2 mL per piece,which contains 1?105 cells.50 g/L fetal bovine serum(FBS) and 20 ?g/L BDNF were added into foundational culture medium in test group;only 50 g/L FBS was added into foundational culture medium in control group.The neurons and their percentage were tested using the immunofluorescence labeling and flow cytometer after 7 days of differentiated cultivation.Results The hippocampus tissue cells grew in globular in serum-free culture medium by suspending culture,which expressed highly positive by nestin immunofluorescence staining.Its purity was above 90%.The percentage of neurone specific enolase(NSE)-positive cells in test group was 60.45%,which was obviously higher than that of control group (23.67%).The difference was significant between 2 groups(?2=27.75 P
3.The latest research progress of torpor occurrence mechanism
Zi-yu ZHU ; Jian-wei JIANG ; Jian-jun ZHANG
Acta Pharmaceutica Sinica 2021;56(6):1532-1536
Torpor refers to a state in which the metabolic activity in the body of the living animal is greatly reduced during the period of reduced food supply, which is manifested as a substantial decrease in body temperature, metabolic level, and exercise level. Mammals have a strict body temperature regulation system to maintain a constant body temperature. When the energy supply is insufficient for a long time, some mammals will enter a hibernation state. Torpor is very similar to the hibernation state. The research on the mechanism of torpor state is of great significance in aerospace, military medicine and other fields. This review summarizes the specific mechanisms regulating the occurrence of torpor from four aspects: adenylate cyclase activating polypeptide (adcyap) neurons, leptin, pyroglutamylated RFamide peptide (QRFP) neurons, and sympathetic nervous system, aiming to provide ideas for further research on the mechanism of torpor.
4.Overexpression of Sox9 gene by the lentiviral vector in rabbit bone marrow mesenchymal stem cells for promoting the repair of cartilage defect.
Zhen WANG ; Da-chuan LIANG ; Jie-yu BAI ; Ning KANG ; Jun-yu FENG ; Zi-quan YANG
China Journal of Orthopaedics and Traumatology 2015;28(5):433-440
OBJECTIVETo study the overexpression of Sox9 gene on rabbit bone marrow mesenchymal stem cells for repairing articular cartilage injury in vivo.
METHODSRabbit bone marrow mesenchymal stem cells (BMSCs) were transduced with lentivirus vector containing Sox9 gene and then cartilage specific molecule was detected by RT-PCR in vitro. Total 48 knee joints of 24 mature New Zealand white rabbits were randomly divided into 3 groups according to different defect treatment. After animals anesthesia,a full-thickness cylindrical cartilage defect of 4 mm diameter and 3 mm deep was created in the patellar groove using a stainlesssteel punch. Meanwhile, the transfected cells were implanted to repair the rabbit model with full-thickness cartilage defects. Cartilage defects tissue was observed with light microscope, electron microscope, HE and immunohistochemistry staining to assess the repair of defects by the complex at 6 weeks or 12 weeks after the implantation.
RESULTSAt 3 days after the transfection, Sox9 gene expression was highest and Sox9 gene expression decreased with the increase of time. At 3 days after the transfection, the expression of collagen type II began and reached the peak at 14 days. It showed that the bone marrow mesenchymal stem cells went into chondrogenic differentiation after transfected by Sox9 gene. Histological observation showed that at 6 weeks after the operation, the defects in the experimental group was filled with hyaline like cartilage tissue, 12 weeks after operation,the defects of cartilage and subchondral bone had satisfactory healing. Both at 6 and 12 weeks postoperatively, the defects were filled with fibrous tissues in control groups. Meanwhile, immunohistochemical staining of sections with type II collagen antibodies showed the proteins in the regenerated tissue stained positive for type II collagen and stronger than the control groups. The histological scoring system indicated that the cartilage repair of experiment groups were better than the two control groups with statistical significances.
CONCLUSIONOverexpression of Sox9 gene on rabbit bone marrow mesenchymal stem cells (BMSCs) promote the repair of cartilage defect.
Animals ; Bone Marrow Cells ; metabolism ; Bone Marrow Transplantation ; Cartilage, Articular ; injuries ; metabolism ; Cell- and Tissue-Based Therapy ; Female ; Genetic Vectors ; genetics ; metabolism ; Humans ; Lentivirus ; genetics ; metabolism ; Male ; Mesenchymal Stem Cell Transplantation ; Mesenchymal Stromal Cells ; metabolism ; Osteoarthritis ; genetics ; metabolism ; therapy ; Rabbits ; SOX9 Transcription Factor ; genetics ; metabolism ; Tissue Engineering
5.YZG-330 regulates the TRPM8 ion channel through the P38 MAPK signaling pathway to reduce body temperature in mice
Zi-yu ZHU ; Yuan-zhi YU ; Yue YUAN ; Jian-jun ZHANG
Acta Pharmaceutica Sinica 2022;57(5):1336-1343
Preliminary research in our laboratory found that compound YZG-330 can reduce mouse body temperature, which could be blocked by adenosine A1 receptor (A1R) antagonist DPCPX. Based on the downstream signaling pathway of the A1R, the mechanism by which YZG-330 lowers body temperature was further studied. The pharmacodynamics of YZG-330 was evaluated by measuring the rectal temperature; expression of the transient receptor potential (TRP) ion channel, the P38 protein and its phosphorylated form in mouse hypothalamic homogenate were detected by Western blotting. A Ca2+ fluorescent probe, Fluo-3AM, was added to cells to detect the effect of YZG-330 on the Ca2+ content of mouse hypothalamic cells. YZG-330 dose-dependently reduced the body temperature in mice, and the selective P38 inhibitor SB-203580 (20 mg·kg-1, i.p.) significantly inhibited the hypothermic effect of YZG-330. A TRPM8 antagonist 2 (0.1 μg per mouse, i.c.v.) markedly attenuated the hypothermic effect of YZG-330 (0.25 or 1 mg·kg-1, i.p.). YZG-330 (2 mg·kg-1, i.p.) significantly increased the phosphorylation of P38, an effect that could be attenuated by the A1R antagonist DPCPX (5 mg·kg-1, i.g.) in mouse hypothalamus. In addition, YZG-330 also prominently enhanced the expression of TRPM8, which could be blocked by SB-203580; YZG-330 (0.1-10 μmol·L-1) increased intracellular Ca2+ concetration in mouse hypothalamic cells in a dose-dependent manner, and was inhibited by the A1R inhibitor DPCPX (0.5 and 1 μmol·L-1) and TRPM8 antagonist 2 (1 μmol·L-1). In conclusion, YZG-330 exerts its hypothermic effect by activating the A1R to promote the phosphorylation of P38 protein and thereby up-regulating the expression and activity of the TRPM8 ion channel, resulting in increased intracellular Ca2+ concentration to stimulate mouse hypothalamus cells to down-regulate body temperature. All animal experiments were approved by the Ethics Committee of the Institute of Materia Medica, Chinese Academy of Medical Sciences.
6.Effect of compound Chinese traditional medicine PC-SPES II in inhibiting proliferation of human prostate cancer cell LNCaP and on expressions of AR and PSA.
Bi-yan ZHANG ; Yu-feng LI ; Yun LAI ; Yun-sen LI ; Zi-jun CHEN
China Journal of Chinese Materia Medica 2015;40(5):950-956
To investigate the effect of compound Chinese traditional medicine PC-SPES II I in inhibiting proliferation of human prostate cancer cell LNCaP based on the androgen receptor (AR) signaling pathway. The effect of PC-SPES II on LNCaP cell proliferation was detected by MTT assay. According to the findings, at the mass concentration of 180-1 440 mg x L(-1), PC-SPES II significantly inhibited the proliferation of LNCaP cells; the IC50 of PC-SPES II at 24 h and 48 h were 311.48, 199.01 mg x L(-1), respectively. The flow Cytometry detection showed 240 mg x L(-1) PC-SPES II arrested cells in G2/M phase, and an obvious apoptotic peak appeared before G0/G1 peak and rose over time. Meanwhile, Hoechst 33258 staining revealed apoptotic cellular morphology. Annexin V-FITC/PI staining manifested an increase in apoptotic cell ratio at the PC-SPES II concentration of 480 mg x L(-1) in a dose dependent manner. The prostate specific antigen (PSA) secretion of LNCaP cells was tested by PSA ELISA kit. Besides, compared with 25 mg x L(-1) Bic, 480 mg x L(-1) PC-SPES II significantly reduced the cell secretion of PSA. The AR and PSA mRNA and protein expressions were detected by qRT-PCR and Western blot. According to the results, after the induction of LNCaP cells with synthetic androgen 25 μg x L(-1) R1881, 240-480 mg x L(-1) PC-SPES II notably down-regulated the AR and PSA mRNA and protein expressions and inhibited the translocation of AR from cytoplasm to nucleus. In summary, PC-SPES II significantly can inhibit the in vitro proliferation of LNCaP cells and arrest cell cycle arrest in G2/M phase. Its mechanism may be associated with the down-regulation of the AR and PSA expressions and the inhibition of AR nuclear translocation.
Antineoplastic Agents, Phytogenic
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pharmacology
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Cell Line, Tumor
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Cell Proliferation
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drug effects
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Drugs, Chinese Herbal
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pharmacology
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Humans
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Male
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Prostate-Specific Antigen
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genetics
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metabolism
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Prostatic Neoplasms
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drug therapy
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genetics
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metabolism
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physiopathology
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Receptors, Androgen
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genetics
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metabolism
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Signal Transduction
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drug effects
7.Structure and spectral characteristics of Diels-Alder type adducts from Morus.
Sheng-Jun DAI ; Zi-Ming LU ; Ruo-Yun CHEN ; De-Quan YU
Acta Pharmaceutica Sinica 2005;40(10):876-881
Animals
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Antihypertensive Agents
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isolation & purification
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pharmacology
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Antioxidants
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isolation & purification
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pharmacology
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Antiviral Agents
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isolation & purification
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pharmacology
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Benzofurans
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chemistry
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isolation & purification
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pharmacology
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Chromones
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chemistry
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isolation & purification
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pharmacology
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Flavonoids
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chemistry
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isolation & purification
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pharmacology
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Magnetic Resonance Spectroscopy
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Mass Spectrometry
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Molecular Structure
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Morus
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chemistry
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Plants, Medicinal
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chemistry
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Resorcinols
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chemistry
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isolation & purification
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pharmacology
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Spectrum Analysis
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methods
8.Experimental study on effect of arsenic trioxide on vascular smooth muscle cells
Qin LU ; Yan-Li AN ; Zi-Yu WANG ; Dong-Sheng ZHANG ; Huan-Zhang NIU ; Juan-Juan FANG ; Gao-Jun TENG ;
Chinese Journal of Radiology 2001;0(04):-
Objective To investigate the effect of arsenic trioxide(As_2 O_3)nanoparticles on rabbit vascular smooth muscle cells in vitro in comparison with normal form As_2 03.Methods The rabbit vascular smooth muscle cells were cultured in vitro.Nano and normal forms of As_2O_3 with drug concentrations of 3?mol/L were added into the cells.Cell proliferation curve was drawn according to the light absorption values of MTT test.Flow cytometry was applied to observe the apoptosis.DNA was extracted and underwent electrophoresis.Results Cell proliferation treated with the 3?mol/L concentration of As_2O_3 was inhibited. Cell growth was inhibited markedly with increased treatment time,and the inhibition effect of nano drug form seemed stronger than that of normal form.MTT light absorption values of cells treated at 24,48 and 72 h showed statistically significant difference(H=10.934,15.039,15.539,P
9.Investigation of body hair assessment of Chinese women in Shandong region and its preliminary application in polycystic ovary syndrome patients
Jun-Li ZHAO ; Zi-Jiang CHEN ; Yu-Hua SHI ; Ling GENG ; Zeng-Xiang MA ; Yuan LI ; Rong TANG ;
Chinese Journal of Obstetrics and Gynecology 2000;0(09):-
Objective To determine a suitable standard of hirsutism for Chinese polycystic ovary syndrome(PCOS)patients living in Shandong region.Methods A total of 623 unbiased women from the general population in Jinan city,131 PCOS patients and 84 controls from outpatients in Shandong region were studied with questionnaires,physical and pelvic ultrasound examination,body hair on 11 sites were evaluated,and 9(lip,chin,arm,thigh,chest,upperbelly,lowerbelly,upperback,lowback)of them which were called hormone Ferriman-Gallwey(F-G)score and 2(forearm,leg)sites of indifferent hormone score were calculated according to the score system described by Ferriman and Gallwey.Results(1)Both body hair F-G score and indifferent hormone score distribution mode in the≤40 years old population were un-normal and both the 95th percentages of score were 2.(2)The hirsutism was significantly higher in PCOS patients[48.1%(63/131)]than in controls[4.8%(4/84)]by F-G score≥2(X~2=47.68,P
10.PDCD5 induces the apoptosis of human prostate cancer cells PC-3M-1E8.
Shu-jun LI ; Jing YU ; Xue-fei ZHAO ; Ying JIANG ; Zi-jun LIU ; Xiao-guang YU
National Journal of Andrology 2007;13(11):979-982
OBJECTIVETo investigate the apoptosis-promoting effect of PDCD5 on human prostate cancer cells PC-3M-1E8.
METHODSPCI-neo and PCI-neo-PDCD5 were transfected into PC-3M-1E8 cells by Lipofectamine 2000, the viability of the cells was analyzed by MTT assay 16 hours after removal of the serum, and the apoptosis was determined by in situ end-labeling and electron microscopy.
RESULTSThe viability and growing speed of the transfected cells were significantly decreased and their apoptotic indexes significantly increased as compared with the control group (P < 0.001).
CONCLUSIONPDCD5 may significantly inhibit the in vitro growth and promote the apoptosis of human prostate cancer cells PC-3M-1E8.
Apoptosis ; genetics ; physiology ; Apoptosis Regulatory Proteins ; genetics ; physiology ; Cell Line, Tumor ; Humans ; In Situ Nick-End Labeling ; Lipids ; chemistry ; Male ; Neoplasm Proteins ; genetics ; physiology ; Plasmids ; chemistry ; genetics ; Prostatic Neoplasms ; genetics ; pathology ; Reverse Transcriptase Polymerase Chain Reaction ; Transfection ; methods