Yidu Central Hospital of Weifang

of Weifang, China

Yidu Central Hospital of Weifang

of Weifang, China
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Jia Y.,Yidu Central Hospital of Weifang | Xu B.,Yidu Central Hospital of Weifang | Xu J.,Yidu Central Hospital of Weifang
Pharmaceutical biology | Year: 2017

CONTEXT: Berberine is an active alkaloid isolated from Rhizoma coptidis [Coptis chinensis Franch. (Ranunculaceae)] that is widely used for the treatment of diabetes, hyperlipidemia and hypertension. However, the pharmacokinetics of berberine in normal rats and type 2 diabetes mellitus (T2DM) model rats are not clear.OBJECTIVE: This study compares the pharmacokinetics of berberine between normal and T2DM model rats.MATERIALS AND METHODS: The T2DM model rats were fed with high fat diet for 4 weeks, induced by low-dose (30 mg/kg) streptozotocin for 72 h and validated by determining the peripheral blood glucose level. Rats were orally treated with berberine at a dose of 20 mg/kg and then berberine concentration in rat plasma was determined by employing a sensitive and rapid LC-MS/MS method.RESULTS: The significantly different pharmacokinetic behaviour of berberine was observed between normal and T2DM model rats. When compared with the normal group, Cmax, t1/2 and AUC(0-t) of berberine were significantly increased in the model group (17.35 ± 3.24 vs 34.41 ± 4.25 μg/L; 3.95 ± 1.27 vs 9.29 ± 2.75 h; 151.21 ± 23.96 vs 283.81 ± 53.92 μg/h/L, respectively). In addition, oral clearance of berberine was significantly decreased in the model group (134.73 ± 32.15 vs 62.55 ± 16.34 L/h/kg).DISCUSSION AND CONCLUSION: In T2DM model rats, the pharmacokinetic behaviour of berberine was significantly altered, which indicated that berberine dosage should be modified in T2DM patients.

Wang F.,Yidu Central Hospital of Weifang | Jiang H.,Qingzhou Hospital of Traditional Chinese Medicine | Wang S.,Yidu Central Hospital of Weifang | Chen B.,Qingdao University
Cellular and Molecular Neurobiology | Year: 2017

Glioblastoma multiforme (GBM) is one of the most malignant cancers. MicroRNAs (miRs) were reported to play important roles in GBM recently. However, the role of a novel miR-186-5p in GBM tumorigenesis is still elusive. Using bioinformatics, miR-186-5p was identified as potential regulators of both fibroblast growth factor (FGF)-2 and NF-κB subunit RelA. Luciferase reporter assay was used to confirm the direct recognition FGF2 and RelA mRNAs by miR-186-5p. Invasion and migration assays were employed to study the effect of miR-186-5p on GBM cell growth in vitro. Xenograft tumor animal model was established to elucidate the in vivo function of miR-186-5p. MiR-186-5p directly targeted mRNAs of both FGF2 and RelA, and repressed their expressions. Invasive and migratory abilities of GBM cells and growth of xenograft tumors were significantly inhibited by miR-186-5p, which can be restored by re-introduction of FGF2 and RelA expressions. MiR-186-5p is a novel tumor suppressor miR that functions to inhibit tumorigenesis of GBM both in vitro and in vivo, by targeting both FGF2 and RelA. MiR-186-5p/FGF2/RelA pathway may be potentially used as molecular targets of in the clinical treatment of GBM. © 2017 Springer Science+Business Media New York

Jia Y.,Yidu Central Hospital of Weifang | Liu J.,Yidu Central Hospital of Weifang | Xu J.,Yidu Central Hospital of Weifang
Xenobiotica | Year: 2017

1.Triptolide, a major pharmacological component isolated from Tripterygium wilfordii Hook F (TWHF), is a substrate of both CYP3A4 and P-glycoprotein (P-gp). 2.This study investigates the effects of GFJ on the pharmacokinetics of triptolide in rats. 3.The pharmacokinetics of orally administered triptolide with or without GFJ pretreatment were investigated. A mechanistic study was also undertaken using the Caco-2 cell transwell model and rat liver microsomes incubation systems to support the in vivo pharmacokinetic data. 4.The results indicated that coadministration of GFJ could increase the systemic exposure of triptolide significantly, including area under the curve (828.58 ± 79.72 versus 541.53 ± 45.23 ng·h/mL) and maximum plasma concentration (273.58 ± 27.98 versus 193.67 ± 10.08 ng/mL). The apparent permeability of triptolide across the Caco-2 cell transwell model increased significantly with the pretreatment of GFJ (from 1.62 ± 0.25 × 10−6 to 2.51 ± 0.41 × 10−6 cm/s), and the metabolic stability of triptolide was also increased from 32.6 ± 5.1 to 52.5 ± 7.8 min with the pretreatment of GFJ, and the difference was significant (p < 0.05). 5.In conclusion, GFJ could increase the systemic exposure of triptolide in rats, when GFJ and triptolide was coadministered, and it might work mainly through increasing the absorption of triptolide by inhibiting P-gp, or through slowing down the metabolism of triptolide in rat liver by inhibiting the activity of CYP3A4. © 2017 Informa UK Limited, trading as Taylor & Francis Group.

Chen Y.,Yidu Central Hospital of Weifang | Tian P.,Yidu Central Hospital of Weifang | Liu Y.,Shandong University
Medical Science Monitor | Year: 2017

Background: Gastric cancer (GC) is the second leading cause of cancer-related death worldwide, but little progress has been achieved in the treatment of advanced or metastatic GC. GC is highly heterogeneous and more studies are needed to elucidate the metastatic mechanisms. Epithelial cell transforming 2 (ECT2) has been reported to be up-regulated in GC tissues, but its signaling mechanisms remain unclear. Material/Methods: In this study, we used Western blot analysis to compare the expression level of ECT2 in 2 GC cell lines: MKN1 and MKN45. Mutagenesis and transfections were conducted to investigate the oncogenic mechanisms of ECT2 in GC cells. Results: ECT2 was expressed at higher levels in MKN1 than in MKN45. Immunoblotting results showed that MKN1 expression was suppressed by p53-WT but was enhanced by p53-mutant. In addition, in vitro experiments showed that ECT2 positively regulated the proliferation and invasion of GC cells. To better explore the mechanisms of ECT2 in promoting GC progression, we introduced site-directed mutants of ECT2, and found that the phosphor-mimic mutant T359D enhanced its oncogenic activity. In contrast, activation of RhoA was inhibited in cells transfected with ECT2 phosphor-deficient mutant T359A. We found that the epithelial cell biomarker E-cadherin was down-regulated by ECT2-T359D, highlighting the role of phosphorylation in regulating epithelial-mesenchymal transition. Conclusions: Our results identified p53 as a novel up-stream signaling molecule of ECT2 in GC cells, and the post-transla-tional modifications of ECT2 play important roles in regulating cancer development and progression. © Med Sci Monit.

Zhuang Y.-T.,Yidu Central Hospital of Weifang
European review for medical and pharmacological sciences | Year: 2017

OBJECTIVE: This study aimed to explore the expression of MALAT1 and its correlation with TNF-α production in lipopolysaccharide (LPS)-induced septic cardiomyocytes. Then, the effect of metastasis-associated lung adenocarcinoma transcript 1 (MALAT1) on LPS-induced cardiomyocyte apoptosis is further studied.MATERIALS AND METHODS: The hub genes in cell response to LPS treatments was analyzed by using Affymetrix gene profiling data downloaded from GEO dataset (GSE3140). Mice model of sepsis was induced by intraperitoneal injection of LPS. HL-1 cells were used as the in vitro cell model. MALAT1 and serum amyloid antigen 3 (SAA3) expression were measured by the qRT-PCR analysis. IL-6, TNF-α, and SAA3 concentrations were quantified by the ELISA assay. Flow cytometric analysis and TUNEL assay were performed to detect cell apoptosis.RESULTS: IL-6 is a hub gene in cell response to LPS treatment and induces MALAT1 upregulation in cardiomyocytes. MALAT1 siRNA had an inhibitive effect, while MALAT1 overexpression showed enhancing effect on LPS induced TNF-α elevation. HL-1 cells treated with LPS had significantly elevated SAA3 expression. Inhibition of SAA during LPS treatment significantly reduced the TNF-α expression, while the addition of apo SAA significantly abrogated the suppressive effect of MALAT1 siRNA on TNF-α expression. HL-1 cells transfected with MALAT1 siRNA were less susceptible to LPS-induced cell apoptosis and with a lower apoptosis rate than the control group.CONCLUSIONS: IL-6 induced MALAT1 upregulation in cardiomyocytes in response to LPS treatment. MALAT1 can enhance TNF-α expression at least partly via SAA3 in LPS-treated cardiomyocytes. MALAT1 upregulation is a mechanism of cardiomyocyte death in response to the LPS stimulation.

He F.-Y.,Yidu Central Hospital of Weifang
European review for medical and pharmacological sciences | Year: 2017

OBJECTIVE: miR-300 has been demonstrated to play an important role in the progression of several tumors, but its role in tumorigenesis of laryngeal squamous cell carcinoma (LSCC) is still unclear. The purpose of this study was to explore miR-300 expression in LSCC patients and analyze its association with clinicopathological factors and prognosis.PATIENTS AND METHODS: In the present study, we measured the expression level of miR-300 in LSCC tissues by RT-PCR. Associations between miRNA-300 expressions and various clinicopathological characteristics were analyzed. Patient survival and their differences were determined by Kaplan-Meier method and log-rank test. The univariate and multivariate analysis were performed using the Cox proportional hazard analysis.RESULTS: miR-300 expression was significantly increased in LSCC tissues compared with that in adjacent non-cancerous tissues (p < 0.01). In addition, lymph node metastasis (p = 0.004) and TNM stage (p = 0.001) were obvious influence factors for the expression of miR-300. More importantly, Kaplan-Meier analysis showed that LSCC patients with low miR-300 expression tended to have shorter overall survival (p < 0.001). Finally, multivariate analysis revealed that miR-300 expression was an independent prognostic factor for LSCC patients.CONCLUSIONS: Our results pointed to miR-300 as a powerful prognostic marker in LSCC and as a novel target for tumor-suppressive therapy.

Guo C.,University of Jinan | Yang X.,University of Jinan | Yang X.,Yidu Central Hospital of Weifang | Zhu W.,Yidu Central Hospital of Weifang | And 2 more authors.
Sensors and Actuators, B: Chemical | Year: 2014

The new polythiophene-based conjugated polymers Poly{3-[(4-{[2-(dimethylamino)ethyl]amino}cyclohexylidene)methyl]thiophene} (P1), Poly{3-[(4-{[3-(dimethylamino)propyl]amino}cyclohexylidene)methyl]thiophene} (P2) and Poly{3-{[4-(4-methylpiperazin-1-yl)cyclohexylidene]methyl}thiophene} (P3) have been synthesized by FeCl3 oxidative polymerization. Among the common metal ions tested, P1, P2 and P3 exhibited high selectivity and sensitivity toward Hg2+ in methanol aqueous solutions at pH 3 with a turn-off mode in which the detection limit of P3 for Hg2+ reached a level of 10-8 M. Additionally, the fluorescence of P1 in Tris-HCl buffer solution could be dramatically quenched in the presence of Cu2+ with a detection limit of 10-9 M. These sensing processes for Hg2+ and Cu2+ have been shown to be mediated by electrostatic effects and complexation. In addition, the P1-Cu2+ system was also employed as a turn-on fluorescence probe for the label-free detection of amino acids. © 2014 Elsevier B.V. All rights reserved.

Wang S.,Yidu Central Hospital of Weifang
Journal of Craniofacial Surgery | Year: 2016

ABSTRACT: Dumbbell-shaped epidural cavernous hemangiomas (CHs) are extremely rare, and they are easily misdiagnosed as spinal schwannomas. Herein, the authors report 1 rare case of dumbbell-shaped epidural CH in the thoracic spine. To the best of our knowledge, only a few cases of dumbbell-shaped epidural CHs in thoracic spine have been reported. Furthermore, the clinical characteristics and treatments for spinal epidural CHs were investigated and reviewed. © 2016 by Mutaz B. Habal, MD.

Gao S.,Yidu Central Hospital of Weifang
Journal of Craniofacial Surgery | Year: 2016

ABSTRACT: Cerebellar glioblastoma multiforme (cGBM) is rare in adults, accounting for <1% of all patients with glioblastoma multiforme (GBM). The accurate diagnosis of cGBM is important for establishing a suitable therapeutic schedule. However, the diagnosis of cerebellar GBM is not usually suspected preoperatively because of its rarity. Generally, patients with cGBMs typically presented with symptoms of raised intracranial pressure, and infrequently cerebellar symptoms such as gait ataxia and disequilibrium. Nevertheless, the authors reported a cGMB patient, with his clinical presentations and imaging characteristics mimicking a vestibular schwannoma. To the best of our knowledge, this is the first reported patient with cGBM mimicking a vestibular schwannoma. Furthermore, the diagnosis, treatment, and prognosis for cGBM were broadly investigated. © 2016 by Mutaz B. Habal, MD.

Liu K.,Yidu Central Hospital of Weifang
Journal of Craniofacial Surgery | Year: 2016

ABSTRACT: Brain abscess is a rare but potentially lethal infection of brain parenchyma, requiring prompt surgical intervention and high-dose antibiotic therapy. Brain abscess is a known complication of surgically treated intracerebral hemorrhage (ICH), but it is exceptionally rare that it occurs at the same site of a nonoperated ICH. Such cases may result from hematogenous spread from distant foci (pneumonia, infectious endocarditis) or contiguous sites. Herein, the authors report a case of 75-year-old woman presenting with a brain abscess 6 weeks after a nonoperated ICH. As the patient suffered from pneumonia during the course of ICH, the authors suspected that the brain abscess might originate from the pneumonia via hematogenous spread. The awareness of brain abscess formation at the site of ICH is of great importance for early diagnosis and prompt treatment. © 2016 by Mutaz B. Habal, MD.

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