1.Effects of Chinese herbal medicine Xifeng Capsule on multidrug resistance-associated protein 1 expression in hippocampus and cortex of rats with lithium-pilocarpine-induced epilepsy.
Xinmin LI ; Hui CHEN ; Yanyan REN ; Yanli LU
Journal of Integrative Medicine 2012;10(8):911-7
To study the effects of Xifeng Capsule, a compound traditional Chinese herbal medicine, combined with carbamazepine on spontaneous epileptic seizure induced by lithium and pilocarpine in rats and the expression level of multidrug resistance-associated protein 1 (MRP1).
3.Prognostic value of preoperative aspartate aminotransferase to platelet ratio index for hepatocellular carci-noma after radical surgical resection
Zhaoguang CHEN ; Hui REN ; Jianbin ZHANG ; Zhijie LI ; Hongbo WANG
The Journal of Practical Medicine 2017;33(11):1814-1818
Objective To explore the prognostic value of blood aspartate aminotransferase to platelet ratio index(APRI)in patients with hepatocellular carcinoma(HCC)after radical surgical resection. Methods A retro-spective cohort study was conducted to analyze 228 patients with HCC who underwent radical surgical resection. Patients were divided into low APRI group(APRI<1.62)and high APRI group(APRI≥1.62). Patients′clinical and demographic data and overall survival(OS)were statistically analyzed and multivariate analysis was performed to identify prognostic factors. Results APRI was closely related to preoperative serum ALT level,PLT level,the positivity of HBsAg,liver cirrhosis and portal vein tumor thrombus. OS of patients in low APRI group was signifi-cantly better when compared to those with an elevated APRI(P<0.01). Multivariate analysis indicated that preop-erative APRI,maximum size of tumor,number of tumor nodules,portal vein tumor thrombus,TNM and differenti-ation of tumors were independent prognostic factors for HCC(P<0.05). Conclusions Preoperative APRI≥1.62 is an independent prognostic factor of OS for patients with HCC after radical surgical resection.
4.Therapeutic effects of combined vitamin K2 with arsenic trioxide on proliferation of HL-60 cells
Yan, QU ; Lan, CHEN ; Li-hong, REN ; Hui, QU
Chinese Journal of Endemiology 2013;(3):258-262
Objective To investigate the therapeutic effects of arsenic trioxide(ATO) plus vitamin K2(VK2) on proliferation of HL-60 cells from acute promyelocytic leukemia cell line and explore the possible mechanism.Methods ①HL-60 cells were exposed to ATO(0.0,0.5,1.0,2.0,4.0 μmol/L),VK2(0.0,2.5,5.0,10.0,20.0μmol/L),or both of different concentrations (0.5 μmol/L ATO + 2.5 μmol/L VK2,1.0 μmol/L ATO + 5.0μmol/L VK2,2.0 μmol/L ATO + 10.0 μmol/L VK2,4.0 μmol/L ATO + 20.0 μmol/L VK2) for 24,48 or 72 h,respectively.The method of CCK-8 was used to assess the proliferation of HL-60 cells and the half inhibitory concentration(IC50) of ATO or VK2 was calculated,respectively.②Combination index (CI) was used to evaluate the combinative effect of the two treatments:CI < 1,=1 or > 1 indicated synergistic,additive,or antagonistic effect,respectively.③After HL-60 cells were treated with 1.0 μmol/L ATO or 5.0 μmol/L VK2 individually or simultaneously for 48 h,Annnexin V/PI staining was performed to identify the apoptosis rate of each group.Untreated cells were used as control group.Results ①ATO or VK2 alone inhibited the proliferation of HL-60 cells in a concentration and time dependent manner.The IC50 of ATO or VK2 at time of 24,48,72 h were (22.86 ± 2.44),(6.66 ± 0.34),(4.14 ± 0.41) and (18.40 ± 1.12),(13.48 ± 0.73),(8.95 ± 0.40) μmol/L,respectively; ②The combination of ATO and VK2 illustrated a synergistic effect with CI < 1.③No statistical difference was found among control group [(4.38 ± 0.56)%],1.0 μmol/L ATO group [(5.76 ± 1.63)%] and 5.0 μmol/L VK2 group [(6.38 ± 1.42)%] in the apoptosis rate(all P > 0.05).However,the apoptosis rate of combined group did rise to (44.18 ± 8.42)%,with a significant improvement to that of VK2 or ATO group alone (all P < 0.01).Conclusions The combination of VK2 and ATO exhibits an enhanced synergistical inhibitive effect on proliferation of HL-60 cells,and apoptosis may be involved in this synergy in part.
5.Neuroprotective effect of curcumin to Aβ of double transgenic mice with Alzheimer's disease.
Hui-Li FENG ; Hui FAN ; Hui-Zi DANG ; Xiao-Pei CHEN ; Ying REN ; Jin-Duo YANG ; Peng-Wen WANG
China Journal of Chinese Materia Medica 2014;39(19):3846-3849
OBJECTIVETo observe the changes in Aβ40, Aβ42 and ADDLs in brains of 3 month-old APPswe/PS1dE9 double transgenic mice after six-month intervention with curcumin, in order to discuss the neuroprotective effect of curcumin.
METHODAPPswe/PS1dE9dtg mice were randomly divided into the model group, the Rosiglitazone group (10 mg x kg(-1) x d(-1)) and curcumin high (400 mg x kg9-1) x d(-1)), medium (200 mg x kg(-1) x d(-1)) and low (100 mg x kg(-1) x d(-1)) dosage groups, with C57/BL6J mice of the same age and the same background in the normal control group. After 6 months, the immunohistochemical staining (IHC) and the Western blot method were used to observe the changes in positive cell of Aβ40, Aβ42 and ADDLs in hippocampal CA1 area, their distribution and protein expressions.
RESULTBoth of the immunohistochemical staining and the Western blot method showed more positive cell of Aβ40, Aβ42 and ADDLs in hippocampal CA1 area and higher protein expressions in the model group than the normal group (P < 0.01). IHC showed a lower result in the Rosiglitazone group than the model group (P < 0.05), while Western blot showed a much lower result (P < 0.01). The number of Aβ40, Aβ42 and ADDLs positive cells and the protein expressions decreased in the curcumin high group, the medium group showed a significant decrease (P < 0.01), and the low dose group also showed reductions in the protein expressions of Aβ40 and Aβ42.
CONCLUSIONThe six-month intervention with curcumin can significantly reduce the expressions of hippocampal Aβ40, Aβ42 and ADDLs in brains of APPswe/PS1dE9 double transgenic mice. Whether curcumin can impact Aβ cascade reaction by down-regulating expressions of Aβ40, Aβ42 and ADDLs and show the neuroprotective effect needs further studies.
Alzheimer Disease ; drug therapy ; genetics ; metabolism ; Amyloid beta-Peptides ; genetics ; metabolism ; Animals ; Brain ; drug effects ; metabolism ; Curcumin ; administration & dosage ; Disease Models, Animal ; Hippocampus ; drug effects ; metabolism ; Humans ; Mice ; Mice, Inbred C57BL ; Mice, Transgenic ; Neuroprotective Agents ; administration & dosage ; Plant Extracts ; administration & dosage
6.Expression of NTS in hepatocellular carcinoma(HCC)is associated with the formation of inflammatory microenvironment, more epithelial mesenchymal transition in cancer, and worse prognosis
Pengpeng LIU ; Yongzi CHEN ; Xiubao REN ; Hui LI ; Guoguang YING ; Kexin CHEN ; Jinpu YU
Chinese Journal of Clinical Oncology 2013;(19):1150-1154
Objective:This work aims determine the expression of the neurotensin (NTS) gene in hepatocellular carcinoma (HCC) subgrouping using immunohistochemical staining (IHC) as well as to evaluate the correlation between the activation of NTS/IL-8 pathway in HCC and inflammatory response in microenvironment and epithelial mesenchymal transition (EMT) in cancer and in the prognosis of patients. Methods:Tumor tissues and corresponding adjacent normal tissue were collected from 64 cases of HCC patients. The expression levels of NTS protein and multiple inflammation and EMT-related proteins, including IL-8, VEGF, MMP9, CD68, E-Cadherin,β-Catenin, and Vimentin, were examined in 64 cases of paraffin-embedded HCC tissues using the immunohistochemistry (IHC) staining method. The clinical outcome and overall survival (OS) among 64 cases of HCC patients were compared. Results:We found that the frequency of NTS-expressing tissues among all HCC samples was 17.19%(11/64). Significantly increased IL-8 protein was confirmed in 90.91%of NTS+HCC samples and was positively correlated with the levels of NTS protein in cancer tissues (P=0.036), which implied the dysfunctional activation of NTS/IL-8 pathway in HCC. The levels of VEGF and MMP9 were significantly correlated with the co-expression of NTS and IL-8 in HCC. Evident features of EMT, including decreased membrane expression of E-Cadherin and increased accumulation of cytoplasmicβ-Catemin and Vimentin, were found in NTS+IL-8+samples. The co-expression of NTS and IL-8 in cancer was significantly correlated with the clinical outcomes of patients, as the mortality rate of NTS+IL-8+HCC patients is 2.5-fold higher than that of others after surgery (P=0.022).Accordingly, the OS of NTS+IL-8+HCC patients significantly decreased (24.65±4.45 m vs. 75.79±16.32 m, P=0.013), and these patients are at a higher risk of death at an expected hazard ratio (HR) of 3.457. Conclusion:The NTS/IL-8 pathway is dysfunctionally activated in a subgroup of HCC samples. Highly expressed NTS is associated with increased inflammatory response in microenvironment, enhanced EMT in cancer, and worse prognosis in HCC patients.
7.Differentiation of odontoblast-like cells from human exfoliated deciduous teeth-derived stem cells by transforming growth factor β3 in combination with heparin in vitro
Fei REN ; Hui ZHOU ; Jianping LIU ; Jincai ZHANG ; Pingping XU ; Qin YANG ; Xiaochun CHEN
The Journal of Practical Medicine 2014;(12):1887-1890
Objective To investigate the ability of human exfoliated deciduous teeth-derived stem cells (SHED) to differentiate into odontoblast-like cells. Methods SHEDs were isolated by enzyme digestion method. The 3nd passage SHEDs were incubated with 25 ng/mL recombinant human TGF-β3 , or with TGF-β3 in combination with heparin. The DSPP expression was detected by Q-PCR and Western-blotting assay. Alizarin red staining, immunhistochemistry assay and alkaline phosphatase(AKP) activity assay were performed, respectively. Result The AKP activity was enhance by TGF-β3 in combination with heparin. Alizarin red staining was positive in TGF-β3-heparin groups, with the increase of DSPP expression at both mRNA and protein level. Conclusion TGF-β3 in combination with heparin can enhance the differentiation of human exfoliated deciduous teeth-derived stem cells into odontoblast-like cells.
8.Transforming growth factor beta 3 induced odontoblast-like differentiation of stem cells from human exfoliated deciduous teeth
Hui ZHOU ; Jinmei LIN ; Fei REN ; Jianping LIU ; Jincai ZHANG ; Pingping XU ; Qin YANG ; Xiaochun CHEN
Chinese Journal of Tissue Engineering Research 2014;(23):3745-3750
BACKGROUND:Studies have reported that the superfamily of transforming growth factors exert a role in the mineralization of various stem cells, but the combination effects of transforming growth factorβ3 and heparin on proliferation and mineralization ability of stem cells from human exfoliated deciduous teeth remains to be studied. OBJECTIVE:To explore the effect of transforming growth factorβ3 on odontoblast-like differentiation of stem cells from human exfoliated deciduous teeth. METHODS:Human deciduous teeth were col ected using enzyme digestion. The 3rd cells were incubated with 25μg/L recombinant human transforming growth factorβ3, 10 U/mL heparin or their combination. The dentin sialophosphoprotein mRNA and dentinsialoprotein expressions were detected by Q-PCR and western blot assay. Alkaline phosphatase activity was determined using alkaline phosphatase kit. RESULTS AND CONCLUSION:Stem cells from human exfoliated deciduous teeth grew wel after induction. The activity of alkaline phosphatase in the combination group was significantly higher than that in the transforming growth factorβ3, heparin and control groups (P<0.01). After combination induction, the cells were strongly positive for alizarin red staining. Results fromα-PCR and western blot assay showed that the expressions of dentin sialophosphoprotein were both remarkably increased at mRNA and protein levels. In summary, stem cells from human exfoliated deciduous teeth can differentiate into odontoblast-like cells under the induction of transforming growth factorβ3 plus heparin.
9.Effects of transforming growth factor beta 3 on the proliferation and mineralization of dental pulp stem cells from human deciduous teeth
Fei REN ; Jianping LIU ; Jinmei LIN ; Hui ZHOU ; Xiaochun CHEN ; Pingping XU ; Qin YANG
Chinese Journal of Tissue Engineering Research 2014;(28):4542-4548
BACKGROUND:The role of transforming growth factorβsuperfamily has been reported in bone mineralization of various types of stem cells, but the effects of transforming growth factorβ3 (TGF-β3) combined with heparin on proliferation and mineralization of dental pulp stem cells from human deciduous teeth remains to be studied. OBJECTIVE:To evaluate the effects of TGF-β3 on the proliferation and mineralization of dental pulp stem cells from human deciduous teeth. METHODS:The enzyme digestion method was utilized to separately culture dental pulp stem cells from human deciduous teeth. The cellcolony forming efficiency was determined. Flow cytometry was utilized to identify cellsurface marker CD146. Immunochemistry for Vimentin and STRO1 was performed to measure dental pulp stem cells from human deciduous teeth. The third passage dental pulp stem cells from human deciduous teeth cultured in vitro were intervened with heparin and TGF-β3 of 1, 5, 25μg/L mass concentration. The MTS method was applied to measure cellgrowth curves. Alizarin red staining was carried out. The changes in alkaline phosphatase activity were determined with alkaline phosphatase kit. RESULTS AND CONCLUSION:The cellcolony forming efficiency was high. cells were positive for CD146, and strongly positive for Vimentin and STRO1. Dental pulp stem cells from human deciduous teeth were identified. MTS assay indicated that there was no obvious effect on promoting proliferation of dental pulp stem cells from human deciduous teeth after stimulation of TGF-β3. Detection results of alkaline phosphatase activity demonstrated that the combination of TGF-β3 and heparin could strengthen the alkaline phosphatase activity of dental pulp stem cells from human deciduous teeth with increased concentration. Alkaline phosphatase activities were significantly higher in the TGF-β3+heparin group, TGF-β3 group and heparin group than in the control group (P<0.01). Alizarin red staining was positive in the TGF-β3+heparin group, and the staining was strongest in the 5μg/L TGF-β3+heparin group. Results indicated that TGF-β3 combined with heparin promoted mineralization of dental pulp stem cells from human deciduous teeth.
10.Correlation between plasma asymmetric dimethylarginine and essential hypertension of Kazak and Han nationalities in Xinjiang
Lian QIN ; Zhong WANG ; Li WANG ; Shaoze CHEN ; Hui TANG ; Juncang DUAN ; Hongqiang REN
Chongqing Medicine 2015;(15):2072-2075
Objective To explore the correlation between plasma asymmetric dimethylarginin(ADMA) and essential hyper‐tention(EH) by comparing the difference of plasma asymmetric dimethylarginine levels between Kazak and Han patients with EH in Xinjiang .Methods 91 Kazak and 112 Han patients with EH were selected .81 Kazak and 110 Han healthy people were selected as healthy control groups .The plasma ADMA levels in EH groups and the control groups were measured by using the reverse phase‐high performance liquid chromatography (RP‐HPLC) .Meanwhile the liver function ,renal function ,blood lipids ,blood glucose and fructosamine were measured .Results Kazak and Han patients with EH had higher levels of plasma ADMA than the control groups (P<0 .01);there was a positive correlation between the plasma ADMA and blood pressure levels of EH patients in two na‐tionalities(r=0 .715 ,P<0 .01 for Kazak ;r=0 .645 ,P<0 .01 for Han) .Conclusion Both Kazak and Han patients with EH have higher levels of ADMA than the respective healthy control group in Xinjiang .The correlation between the plasma levels of ADMA and EH existed ,which indicate that ADMA might be involved in the occurrence and development of EH .