Baoding Second Central Hospital

Baoding, China

Baoding Second Central Hospital

Baoding, China
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Kong M.,Capital Medical University | An L.L.,CAS Institute of Biophysics | Hu Z.S.,China Institute of Metrology | Li K.M.,Baoding Second Central Hospital | And 6 more authors.
Zhonghua zhong liu za zhi [Chinese journal of oncology] | Year: 2016

OBJECTIVE: The aim of this study was to investigate the effects of Rad9 mutants with impaired DNA mismatch repair (MMR) function on the tumorigenesis of colorectal cancer.METHODS: The colorectal cancer tumor samples were collected from 100 patients. The mutation profiles of human Rad9 (hRad9) gene in these samples were detected by reverse transcriptase-polymerase chain reaction (RT-PCR) and sequencing. The plasmid of pFLAG-hRad9 (L101M) was constructed following the QuickChange mutagenesis procedure and transfected into mRad9-deleted mouse cells (mRad9(-/-) cells). The expression of hRad9 protein was measured by western blot analysis. The MMR activity in live cells was detected by flow cytometry using the reporter plasmid for MMR function.RESULTS: Mutation from Leu to Met at the residue 101 (L101M) of hRad9 gene was detected in 7 of the 100 samples. The mismatch repair efficiency of mRad9(-/-)+ L101M cells (mRad9-deleted mouse cells with ectopic expression of L101M hRad9 gene) was (34.0±5.6)%, which was significantly lower than that in the mRad9(-/-)+ hRad9 cells [mRad9-deleted mouse cells with ectopic expression of hRad9 gene, (48.0±7.5)%, P<0.05]. After N-nitroso-N-methylurea (MNU) treatment, the survival rate of mRad9(-/-)+ L101M cells was (33.7±5.9)%, which was significantly higher than that in the mRad9(-/-)+ hRad9 cells [(21.3±4.7)%, P<0.05]. Thus, ectopic expression of L101M hRad9 gene resulted in significantly reduced MMR activity and increased resistance to MNU. Furthermore, ectopic expression of hRad9 gene with mutation at the target residues of post-translational modification in mRad9(-/-) cells also led to a reduced MMR activity.CONCLUSION: Rad9 mutants with impaired DNA mismatch repair function may promote tumorigenesis of colorectal cancer.


PubMed | CAS Institute of Biophysics, University of Science and Technology of China, Suzhou Institute of Systems Medicine, China Institute of Metrology and 3 more.
Type: Journal Article | Journal: Zhonghua zhong liu za zhi [Chinese journal of oncology] | Year: 2016

The aim of this study was to investigate the effects of Rad9 mutants with impaired DNA mismatch repair (MMR) function on the tumorigenesis of colorectal cancer.The colorectal cancer tumor samples were collected from 100 patients. The mutation profiles of human Rad9 (hRad9) gene in these samples were detected by reverse transcriptase-polymerase chain reaction (RT-PCR) and sequencing. The plasmid of pFLAG-hRad9 (L101M) was constructed following the QuickChange mutagenesis procedure and transfected into mRad9-deleted mouse cells (mRad9(-/-) cells). The expression of hRad9 protein was measured by western blot analysis. The MMR activity in live cells was detected by flow cytometry using the reporter plasmid for MMR function.Mutation from Leu to Met at the residue 101 (L101M) of hRad9 gene was detected in 7 of the 100 samples. The mismatch repair efficiency of mRad9(-/-)+ L101M cells (mRad9-deleted mouse cells with ectopic expression of L101M hRad9 gene) was (34.05.6)%, which was significantly lower than that in the mRad9(-/-)+ hRad9 cells [mRad9-deleted mouse cells with ectopic expression of hRad9 gene, (48.07.5)%, P<0.05]. After N-nitroso-N-methylurea (MNU) treatment, the survival rate of mRad9(-/-)+ L101M cells was (33.75.9)%, which was significantly higher than that in the mRad9(-/-)+ hRad9 cells [(21.34.7)%, P<0.05]. Thus, ectopic expression of L101M hRad9 gene resulted in significantly reduced MMR activity and increased resistance to MNU. Furthermore, ectopic expression of hRad9 gene with mutation at the target residues of post-translational modification in mRad9(-/-) cells also led to a reduced MMR activity.Rad9 mutants with impaired DNA mismatch repair function may promote tumorigenesis of colorectal cancer.


Guo Z.-B.,Baoding Second Central Hospital | Zhang C.-J.,Baoding Second Central Hospital | Ma L.-N.,Baoding Second Central Hospital | Gao D.-W.,Baoding Second Central Hospital | And 2 more authors.
Chinese Journal of Tissue Engineering Research | Year: 2016

BACKGROUND: Cordyceps polysaccharide is a commonly used adjuvant drug for clinical treatment of nephrotic syndrome. As a classic model of nephrotic syndrome induced by adriamycin, the Sprague-Dawley rat model of nephrotic syndrome exhibits similar clinical manifestations and pathological changes to minimal-change nephropathy in humans. OBJECTIVE: To observe the effect of adipose-derived mesenchymal stem cells (ADMSCs) transplantation combined with cordyceps polysaccharide on renal function and hypercoagulable state in rats with nephrotic syndrome. METHODS: ADMSCs suspension was made in vitro and labeled using PKH26. Fifty Sprague-Dawley rats were randomized into normal (no intervention), model, ADMSCs, cordyceps polysaccharide and combined treatment groups (n=10/group). Adriamycin administration was performed to make rat models of nephrotic syndrome in the latter three groups. After modeling, model rats were respectively given no treatment, ADMSCs intravenously for 3 days, cordyceps polysaccharide intragastrically for 12 weeks, or their combined use. Then, 24-hour urinary protein, serum total cholesterol, triglyceride, total protein, albumin, high-density lipoprotein, low-density lipoprotein, creatinine, blood urea nitrogen levels and coagulation changes were detected at 12 weeks. Meanwhile, histopathological changes of renal tissues were observed under light microscope; survival and distribution of PKH26-labeled ADMSCs were observed by fluorescence microscopy; and expression of Hpa gene in renal tissue was detected by RT-PCR. RESULTS AND CONCLUSION: Compared with the model group, the 24-hour urinary protein, serum total cholesterol, triglyceride, low-density lipoprotein, creatinine, and blood urea nitrogen levels were significantly lower, while the serum total protein, albumin and high-density lipoprotein levels were significantly higher in the three treatment groups (P < 0.05). These indicators showed significant differences between the combined group and ADMSCs and cordyceps polysaccharide groups (P < 0.05). Both ADMSCs transplantation and cordyceps polysaccharide significantly relieved the hypercoagulable state of rats with nephrotic syndrome, and their combined effects were stronger (P < 0.05). After treatment, the pathological improvement in the kidney tissues was found in the three treatment groups; moreover, it was better in the combined treatment group than the ADMSCs and cordyceps polysaccharide groups. Better improvement in the number of PKH26-labeled ADMSCs and the expression of Hpa mRNA was observed in the combined treatment group compared with the ADMSCs and cordyceps polysaccharide groups. In conclusion, the combination of ADMSCs transplantation and cordyceps polysaccharide can improve kidney function and hypercoagulable state in rats with nephrotic syndrome, reducing pathological damage to the kidney tissue. © 2016, Journal of Clinical Rehabilitative Tissue Engineering Research. All rights reserved.


Liu P.,Baoding Second Central Hospital | Xin F.,Baoding Second Central Hospital | Ma C.F.,Maternity and Child Health Hospital
Genetics and Molecular Research | Year: 2015

Previous studies have reported that miR-196a is upregulated in cervical cancer tissues and cell lines. However, whether serum miR-196a is increased in patients with cervical cancer or cervical intraepithelial neoplasia (CIN), and its potential clinical value remained unknown. In total, 105 cervical cancer patients, 86 CIN patients, and 50 healthy volunteers were recruited. Quantitative reverse transcription-polymerase chain reaction was performed to compare the serum levels miR-196a in all participants. The associations between serum miR-196a and CIN grade/clinicopathological parameters of cervical cancer were also examined. A survival analysis was performed using the Kaplan-Meier method. Univariate and multivariate analyses were conducted to explore the independent risk factors for cervical cancer. Our results revealed that serum miR-196a levels were higher in patients with cervical cancer (P < 0.01) and CIN (P < 0.05) compared to those in healthy controls. Serum miR-196a was associated with CIN grade and various cervical cancer parameters including tumor size (P = 0.031), lymph node metastasis (P = 0.018), FIGO stage (P = 0.004), and grade (P = 0.011). Cervical cancer patients with higher serum miR-196a levels had a poorer overall survival rate (P = 0.004). Multivariate analysis revealed that high serum miR-196a was an independent predictor for poor survival of cervical cancer (HR = 3.510; 95%CI = 1.961-6.874; P = 0.025). In conclusion, our findings suggest that serum miR-196a overexpression is associated with CIN grade and cervical cancer progression. Therefore, serum miR-196a may be a reliable biomarker for early detection and prognosis of cervical cancer. © FUNPEC-RP.


Objective: To observe changes in expression of tumor necrosis factor (TNF)-alpha and permeability of blood brain barrier after salidroside pretreatment in rats with injury induced by focal cerebralischemia-reperfusion. Methods: Forty-five male SD rats were randomly divided into three groups (n=15): control group, ischemia-reperfusion (IR) model group, and salidroside pretreatment group. Before the IR model establishment, the rats in the salidroside pretreatment group were intraperitoneally administered with salidroside at a dose of 24 mg/(kg·d) for 7 d. After 30 min post the last administration, the IR model was induced by occlusion of middle cerebral artery with a filament. After 24 h post the operation, the water content and Evens blue content in the ischemia cerebral hemisphere were determined, and the level of TNF-alpha mRNA was detected by the semi-quantitative RT-PCR. Results: Compared with the IR model group, the salidroside pretreatment group had significantly lower (P<0.05) water content and Evens blue content in the ischemia cerebral hemisphere and also had significantly lower (P<0.05) level of TNF-alpha in the ischemic cerebral cortex tissue. Conclusions: The salidroside pretreatment alleviated the focal cerebralischemia-reperfusion injury in the rat model, possibly by decreasing the permeability of blood brain barrier, attenuating brain edema and reducing TNF-alpha expression. © 2013 Hainan Medical College.


PubMed | Baoding Second Central Hospital
Type: Journal Article | Journal: Asian Pacific journal of tropical medicine | Year: 2013

To observe changes in expression of tumor necrosis factor (TNF)-alpha and permeability of blood brain barrier after salidroside pretreatment in rats with injury induced by focal cerebralischemia-reperfusion.Forty-five male SD rats were randomly divided into three groups (n=15): control group, ischemia-reperfusion (IR) model group, and salidroside pretreatment group. Before the IR model establishment, the rats in the salidroside pretreatment group were intraperitoneally administered with salidroside at a dose of 24 mg/(kgd) for 7 d. After 30 min post the last administration, the IR model was induced by occlusion of middle cerebral artery with a filament. After 24 h post the operation, the water content and Evens blue content in the ischemia cerebral hemisphere were determined, and the level of TNF-alpha mRNA was detected by the semi-quantitative RT-PCR.Compared with the IR model group, the salidroside pretreatment group had significantly lower (P<0.05) water content and Evens blue content in the ischemia cerebral hemisphere and also had significantly lower (P<0.05) level of TNF-alpha in the ischemic cerebral cortex tissue.The salidroside pretreatment alleviated the focal cerebralischemia-reperfusion injury in the rat model, possibly by decreasing the permeability of blood brain barrier, attenuating brain edema and reducing TNF-alpha expression.


PubMed | Baoding Second Central Hospital
Type: Journal Article | Journal: European review for medical and pharmacological sciences | Year: 2016

MicroRNAs (miRNAs) have been demonstrated to play critical roles in regulating the molecular process of tumorigenesis. Therefore, the purpose of this study was to establish a panel of serum miRNA signature for early detection of cervical intraepithelial neoplasia (CIN).One hundred and twenty-six patients with CIN and sixty healthy control subjects were recruited in this cohort study. Quantitative reverse transcript polymerase chain reaction (qRT-PCR) was conducted to detect the expression level of the panel of miRNA signature (miR-9, miR-10a, miR-20a and miR-196a) in the serum samples of all the participants. The association between HPV infection status and the expression levels of miRNAs was also evaluated. In addition, Receiver Operating Characteristic (ROC) curve was used to evaluate the diagnostic value of the combination of these four serum miRNAs.The expression levels of the four miRNAs (miR-9, miR-10a, miR-20a and miR-196a) were all significantly upregulated in the serum samples derived from the CIN patients compared with those from the healthy controls (p < 0.01). Also, HPV infection status was significantly correlated with the expression levels of miRNAs (p < 0.01). The ROC analysis showed that this four-miRNA signature showed high accuracy in discriminating CIN individuals (AUC = 0.886, p < 0.01) from healthy controls.Taken together, our findings demonstrated that the panel of four serum miRNAs (miR-9, miR-10a, miR-20a and miR-196a) are useful and novel noninvasive biomarkers for early detection of CIN.


PubMed | Maternity & Child Health Hospital and Baoding Second Central Hospital
Type: Journal Article | Journal: Genetics and molecular research : GMR | Year: 2016

Previous studies have reported that miR-196a is upregulated in cervical cancer tissues and cell lines. However, whether serum miR-196a is increased in patients with cervical cancer or cervical intraepithelial neoplasia (CIN), and its potential clinical value remained unknown. In total, 105 cervical cancer patients, 86 CIN patients, and 50 healthy volunteers were recruited. Quantitative reverse transcription-polymerase chain reaction was performed to compare the serum levels miR-196a in all participants. The associations between serum miR-196a and CIN grade/clinicopathological parameters of cervical cancer were also examined. A survival analysis was performed using the Kaplan-Meier method. Univariate and multivariate analyses were conducted to explore the independent risk factors for cervical cancer. Our results revealed that serum miR-196a levels were higher in patients with cervical cancer (P < 0.01) and CIN (P < 0.05) compared to those in healthy controls. Serum miR-196a was associated with CIN grade and various cervical cancer parameters including tumor size (P = 0.031), lymph node metastasis (P = 0.018), FIGO stage (P = 0.004), and grade (P = 0.011). Cervical cancer patients with higher serum miR-196a levels had a poorer overall survival rate (P = 0.004). Multivariate analysis revealed that high serum miR-196a was an independent predictor for poor survival of cervical cancer (HR = 3.510; 95%CI = 1.961-6.874; P = 0.025). In conclusion, our findings suggest that serum miR-196a overexpression is associated with CIN grade and cervical cancer progression. Therefore, serum miR-196a may be a reliable biomarker for early detection and prognosis of cervical cancer.

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