1.Protective effect and mechanism ofShenfu injection on the oxidaitve damage in PC12 cells induced by H2O2
Yanni LYU ; Longsheng FU ; Hongwei PENG ; Xiaochun SUN ; Haili ZHONG
International Journal of Traditional Chinese Medicine 2016;38(4):341-344
Objective To investigate the effects and probable mechanism ofShenfu injection on the oxidaitve damage of H2O2-induced PC12 cells.Methods PC12 cells were cultured and exposed to 100μmol/L H2O2 for 1 h to establish the oxidative damage model. The protective effect ofShenfu injection was observed by the cell survival rate measured by colorimetric MTT assay, and the leakage rate of lactic dehydrogense (LDH). Western blot methods were used to detect the expression of NF-κB signaling pathway.Results Compared with the model group,Shenfu injection at 5, 10, 20 ml/L could improve the PC12 cells survival rate (83.11% ± 2.59 %, 87.99% ± 0.59%, 85.26% ± 1.07%vs. 73.82% ± 1.82%;P<0.01 orP<0.05), decrease the LDH leakage rate (32.75% ± 4.10%, 28.52% ± 1.14%, 35.79% ± 1.62%vs. 64.34% ± 3.18%;P<0.01 or P<0.05). Western blot results showed thatShenfu injection could protect the PC12 cells from oxidaitve damage by suppressing the p-p65/p65 (1.30 ± 0.10, 1.17 ± 0.06, 1.37 ± 0.15 vs. 1.70 ± 0.10;P<0.01 orP<0.05), p-IκBα/IκBα (1.07 ± 0.12, 1.00 ± 0.10, 1.03 ± 0.06 vs. 1.17 ± 0.06; P<0.01 orP<0.05).ConclusionShenfu injection has a obvious antioxidant effect on PC12 cells in vitro.
2.Study on the neuroprotective effects and action mechanisms of four Chinese herbal ;monomer on cerebral ischemia reperfusion mice
Yanni LYU ; Longsheng FU ; Jinhua WEN ; Zhouping DUAN ; Xuelian ZHENG ; Jian ZHOU ; Jun CAI ; Xuanying CHEN
International Journal of Traditional Chinese Medicine 2016;38(10):908-913
Objective To compare the therapeutical effect of puerarin, ligustrazine, ginsenoside Rb1, Hydroxysafflor yellow A on cerebral ischemia reperfusion mice. Methods The mice were randomly assigned for sham group, model group, puerarin group, ligustrazine group, ginsenoside Rb1 group, and Hydroxysafflor yellow A group, 24 mice for each group. All the groups were subjected to middle cerebral artery occlusion (MCAO) by 1 h ischemia and 24 h of reperfusion except the sham group. The puerarin, ligustrazine, ginsenoside Rb1, Hydroxysafflor yellow A were administrated by tail vein injection with 3μmol/kg at the onset of 1 h of ischemia. The neurologic deficit score, infarct area calculated by TTC staining, cerebral cortex blood flow monitored by laser doppler flowmetry, NO content measured by chemical colorimetry and western blot were applied to determine the expression for cleaved-caspase-3 and nuclear transcription factor NF-κB for each group. Results Compared with the model group, the infarct area (15.83%± 1.83%, 22.00%± 2.53%, 22.83%± 1.83%, 17.83%± 1.72%vs. 34.67%± 2.66%) in the puerarin group, ligustrazine group, ginsenoside Rb1 group, Hydroxysafflor yellow A group was significantly decreased (P<0.01 or P<0.05);the cerebral cortex blood flow (598.81 ± 9.90 μl/kg?min-1, 614.78 ± 9.20 μl/kg?min-1, 577.83 ± 5.55 μl/kg?min-1, 583.54 ± 7.98 μl/kg?min-1 vs. 548.43 ± 1.97 μl/kg?min-1) significantly increased (P<0.01 or P<0.05);the NO content (17.09 ± 1.18μmol/L, 18.54 ± 0.54μmol/L, 18.17 ± 0.49μmol/L, 15.10 ± 0.73μmol/L vs. 20.63 ± 0.73μmol/L) ignificantly decreased (P<0.01 or P<0.05);the expression of cleaved-caspase-3 (1.02 ± 0.08, 1.12 ± 0.04, 0.87 ± 0.08, 1.07 ± 0.08 vs. 1.30 ± 0.06) and NF-κB p-p65/NF-κB p65 (1.03 ± 0.19, 1.15 ± 0.05, 1.12 ± 0.08, 0.72 ± 0.08 vs. 1.45 ± 0.08) ignificantly decreased (P<0.01 or P<0.05) Conclusions Four Chinese herbal monomers could improve nerve and cerebral dysfunctions and ameliorate ischemia symptoms with varying degrees. The mechanisms were involved with the enhancement of cerebral cortex blood flow and inhibition of cell apoptosis and the activation of inflammatory signaling pathways.
3.Preparation and biodistribution of 2-(5-[18F] fluoro-pentyl)-2-methyl-malonic acid and its clinical application
Xiaojun ZHANG ; Yungang LI ; Jian LIU ; Weijun WANG ; Longsheng PAN ; Huaping FU ; Jinming ZHANG
Chinese Journal of Nuclear Medicine and Molecular Imaging 2016;36(2):131-136
Objective To synthesize 2-(5-[18 F] fluoro-pentyl)-2-methyl-malonic acid (18 F-ML-10) and to investigate the biodistribution in mice and the primary clinical application.Methods 18F-ML-10 was synthesized by domestic synthesis module MF-2V-IT-1.Quality control of the probe was performed after automated synthesis.The biological characteristics of 18F-ML-10 were assessed by biodistribution assay on male Kunming mice and microPET imaging on a male SD rat.Six patients with brain metastasis (4males,2 females,and age 21-68 years) were enrolled in this study.18F-ML-10 PET images were acquired before and at 48 h after radiotherapy.SUVmean and SUVmax of ROI were calculated.GTV changes were measured by MRI before and 3 months after radiotherapy.Response of brain metastasis to radiotherapy was assessed by PET imaging with 18F-ML-10.Two-sample t test was used.Results The non-corrected radiochemical yield of 18F-ML-10 was (26.5±7.3)% with acceptable quality.The radiochemical purity exceeded 99%.18F-ML-10 was excreted through the kidneys,and the radiouptake in the blood was declined rapidly.The radiotracer accumulation was low in most of other organs.The testis showed a significant uptake.The SUVmean and SUVmax after radiotherapy (5.54±2.72 and 7.29±3.09) were significantly higher than the baseline values(3.81±1.13 and 4.97±1.05;t=2.670,2.663,both P<0.05).The GTV after radiotherapy was significantly lower than the baseline value:(13.14±9.39) cm3 vs (23.34± 18.13) cm3;t =3.002,P<0.05.Conclusions 18F-ML-10 could be synthesized reliably and repeatedly by domestic synthesis module.It has satisfactory properties in vivo and is probably suitable for early assessment of the response to radiotherapy in patients with brain metastasis.
4.Limited internal fixation with calcaneal traction to treat Pilon fracture
Jinghe MA ; Xiaochun MA ; Yubin WANG ; Guisen SUN ; Peng FU ; Qiong WU ; Longsheng GUO ;
Chinese Journal of Orthopaedic Trauma 2002;0(03):-
Objective To analyze the etiology and features of Pilon fractures and to explore their best operative method.Methods 92patients with pilon fracture were treated operatively and followed up between1991and 2001.According to the Ovadi a -Beals' s classification,there were 7cases of Type I fracture,12of II,30of III,26of IV,17of V.During the o peration,55patients had limited in ternal fixation with calcaneal trac-tion,18with calcaneal traction and plaster splint,10with tibial and fi bula internal fixation,9with external fixation apparatus.Results92patients were followed up for an av erage time of 53months(ranging from 4~103months).According to Mazur ' s criteria,the results of the treatm ent were rated as excellent in 42patients,good in 34,fair in 11and poor in 5.Conclusion The pilon fracture is caused by both t he force of falling from a high altitude and the force of rebounding which act in the distal end of tibia an d fibula.Limited internal fixation with calcaneal traction is a right choice of operative method to treat pilon fr actures.[
5.Study on the mechanism of the regulation of Wnt/β-catenin pathway by hydroxysafflor yellow A in the protection of blood brain barrier in cerebral ischemia mice
Longsheng FU ; Yanni LYU ; Peng XU
International Journal of Traditional Chinese Medicine 2018;40(3):226-230
Objective To observe the effect of hydroxysafflor yellow A (HSYA) on the protection of blood brain barrier of cerebral ischemia mice, and explore the mechaniam. Methods Seventy-two C57/BL mice were divided into 6 groups: the sham operation group, the cerebral ischemia mice group, the TLR4 blocking group, the TLR4 blocking+cerebral ischemia mice group, the HSYA intervention+cerebral ischemia mice group, HSYA intervention+TLR4 blocking+cerebral ischemia mice group. Cerebral ischemia mice group were subjected to the middle cerebral artery occlusion (MCAO) model, TLR4 blocking was used, while TLR4 blocking was injected TLR4 antibody via right common carotid artery, and HSYA intervention group was injected 2 mg/kg HSYA by tail vein 0.5 h before cerebral ischemia. RT-PCR and western blot were applied to detect the mRNA and protein expression change of Wnt3a and β-catenin in each group. Results Compared with the cerebral ischemia mice group,the expression of TLR4 mRNA(1.63 ± 0.05,1.53 ± 0.04,1.84 ± 0.03 vs. 1.97 ± 0.05) significantly decreased (P<0.05 or P<0.01), the Wnt3a mRNA (0.56 ± 0.01, 0.58 ± 0.01, 0.50 ± 0.04 vs.0.42 ± 0.03),β-catenin mRNA(0.61 ± 0.03,0.74 ± 0.02,0.58 ± 0.04 vs.0.50 ± 0.03),Claudin-5 mRNA (0.54 ± 0.02, 0.58 ± 0.01, 0.47 ± 0.01 vs. 0.46 ± 0.02) mRNA significantly increased(P<0.05 or P<0.01), the protein expression of TLR4 (1.73 ± 0.05, 1.57 ± 0.03, 1.79 ± 0.08 vs. 1.89 ± 0.02) significantly decreased (P<0.05 or P<0.01), the protein expression of Wnt3a (0.67 ± 0.03, 0.74 ± 0.03, 0.57 ± 0.01 vs. 0.46 ± 0.01), Occludin(0.66 ± 0.02,0.73 ± 0.02,0.67 ± 0.01 vs.0.53 ± 0.01),Claudin-5(0.71 ± 0.01,0.73 ± 0.01,0.66 ± 0.01 vs. 0.64 ± 0.03) significantly increased (P<0.05 or P<0.01) in the TLR4 blocking+cerebral ischemia mice group, the HSYA intervention+cerebral ischemia mice group, HSYA intervention+TLR4 blocking+cerebral ischemia mice group. Conclusions TLR4 plays a critical regulatory role on the activation of Wnt3a and β-catenin in cerebral ischemic mice model. HSYA could intervene on the tight junction of cerebral ischemic brain through the intervention of Wnt3a and β-catenin, thus exerting the protection for cerebral ischemic brain.
6. The mechanism of the combination of radix ophiopogonis and schisandra chinensis on atherosclerosis based on network pharmacology
Yanni LYU ; Longsheng FU ; Yisong QIAN ; Jinhua WEN ; Xiaohua WEI ; Jian ZHOU ; Yuhua LI
International Journal of Traditional Chinese Medicine 2020;42(2):144-150
Objective:
To excavate the mechanism of the combination of Radix Ophiopogonis and Schisandra chinensis to treatatherosclerosisbased on network pharmacology to discuss its mechnism.
Methods:
This paper excavated the associated proteins with Radix Ophiopogonis and Schisandra chinensis from the TCMGeneDIT database, and constructed the multicomponent protein network of Radix Ophiopogonis, Schisandra chinensis and proteins ApoE-/- mice were randomly divided into control group, model group, low, medium, high dose group and atorvastatin calcium group. Except the control group, other groups were fed with H10540 high fat diet for 12 weeks. From the 4th week, the atrovastatin calcium group was given atrovastatin calcium liquid 6 mg/kg by gavage. The low, medium and high dose groups were administed 4.68, 2.34 and 1.17 g/kg, respectively, once a day by gavage for 8 weeks. The oil red staining was applied to observe the pathological changes of atherosclerotic aortic wall. Western blot was subjected to detect the expression change of mitogen activated protein kinases p38 (p38), ATP binding cassette subfamily G member 1 (ABCG1), Toll like receptor 4 (TLR4), heat shock protein 90 alpha family class a member 1 (HSP90AA1), MMP-9 and arachidonate 5-lipoxygenase (ALOX5) in liver tissue, as well as nuclear factor related factor 2 (Nrf2) and heme oxygenase 1 (HO-1) in brain tissue.
Results:
It was found that eleven components were interacted with 37 proteins, forming a protein interaction network with 48 nodes and 190 boundaries without isolated nodes. Compared to the model group, the level of p-p38/p38 (2.12 ± 0.12, 1.76 ± 0.11, 1.69 ± 0.10