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Wang X.Z.,Shandong University | Wang X.Z.,Medical Imaging Center | Wang B.,Medical Imaging Center | Gao Z.Q.,Weifang Medical University | And 5 more authors.
European Journal of Radiology | Year: 2010

Purpose: To investigate whether 1H-MRSI can be used to predict the proliferative activity of prostate cancer. Materials and methods: Thirty-eight patients with prostate cancer (PCa) and thirty-three patients with benign prostate hyperplasia (BPH) were included in this study. Patients were examined in supine position using a 1.5 T superconducting magnetic scanner equipped with a pelvic phased-array multi-coil and CSI-3D-PROSTATE sequence. Commercial software was used to acquire and process MR spectroscopic imaging data. Mean (Cho + Cr)/Cit ratios of PCa, BPH, and peripheral zone (PZ) were calculated. Cellularity of PCa was recorded based on hematoxylin and eosin staining. PCNA was detected using immunohistochemical techniques. Results: The mean (Cho + Cr)/Cit ratio of the peripheral zone (0.38 ± 0.09) was lower than that of BPH (0.51 ± 0.19) (P < 0.05). The average value of (Cho + Cr)/Cit ratio of prostate cancer was 3.98 ± 0.12. The (Cho + Cr)/Cit ratio of prostate cancer was higher than that of the peripheral zone and BPH (P < 0.05). The cellularity and PCNA LI of prostate cancer were 12.90 ± 4.07% and 72.1 ± 19.01%, respectively. The (Cho + Cr)/Cit ratio of prostate cancer positively correlated with tumor cellularity (r = 0.582, P = 0.027) and PCNA LI (r = 0.495, P = 0.022). Conclusion: The (Cho + Cr)/Cit ratio of PCa can reveal the differences in proliferative activity between PCa and BPH. MRSIs are therefore able to predict the proliferative rate of variously differentiated prostate cancers. © 2008 Elsevier Ireland Ltd. All rights reserved. Source

Li F.,Weifang Medical University | Wu X.,Medical Imaging Center | Li J.,Weifang Traditional Chinese Medicine Hospital | Niu Q.,Medical Imaging Center
Molecular Medicine Reports | Year: 2016

The complex etiopathogenesis of Alzheimer's disease (AD) has limited progression in the identification of effective therapeutic agents. Amyloid precursor protein (APP) and presenilin-1 (PS1) are always overexpressed in AD, and are considered to be the initiators of the formation of β-amyloid plaques and the symptoms of AD. In the present study, a transgenic AD model, constructed via the overexpression of APP and PS1, was used to verify the protective effects of ginsenoside Rg1 on memory performance and synaptic plasticity. AD mice (6-month-old) were treated via intraperitoneal injection of 0.1-10 mg/kg ginsenoside Rg1. Long-term memory, synaptic plasticity, and the levels of AD-associated and synaptic plasticity-associated proteins were measured following treatment. Memory was measured using a fear conditioning task and protein expression levels were investigated using western blotting. All the data was analyzed by one-way analysis of variance or t-test. Following 30 days of consecutive treatment, memory in the AD mouse model was ameliorated in the 10 mg/kg ginsenoside Rg1 treatment group. As demonstrated by biochemical experiments, ginsenoside Rg1 treatment reduced the accumulations of β-amyloid 1-42 and phosphorylated (p)-Tau in the AD model. Additionally, brain-derived neurotrophic factor (BDNF) and p-TrkB synaptic plasticity-associated proteins were upregulated following ginsenoside Rg1 application. Correspondingly, long-term potentiation (LTP) was restored following ginsenoside Rg1 application in the AD mice model. Taken together, ginsenoside Rg1 repaired hippocampal LTP and memory, likely through facilitating the clearance of AD-associated proteins and through activation of the BDNF-TrkB pathway. Therefore, ginsenoside Rg1 may be a candidate drug for the treatment of AD. Source

Zhu X.,Guangdong Medical College | Du J.,Weifang Traditional Chinese Medicine Hospital | Liu G.,Guangdong Medical College
Clinical Laboratory | Year: 2012

Background: To compare the roles of adipose and bone marrow derived mesenchymal stem cells (AMSCs and BMSCs) in multiple differentiation capacity to provide a theoretical basis for stem cell transplantation. Methods: We isolated bone marrow and adipose derived mesenchymal stem cells and compared their phenotype, cell doubling time, the secretion of factors, and the ability of multi-differentiation. Results: BMSCs and AMSCs were similar in cell phenotype and the differences existed only between the expression of CD106. The proliferation rate of AMSCs was faster than of BMSCs (doubling time 28h vs. 39h) and the capacity to suppress T cell proliferation and activation was weakened in AMSCs. In addition, both sources of cells were able to differentiate into bone, fat, and cartilage which proved their stem cell properties. Conclusions: Cell origin and abundance were decisive factors in stem cell applications and with the same premise as for AMSCs and BMSCs, adipose tissue is a more promising source of stem cells. Source

Song L.-J.,Shanghai JiaoTong University | Lu H.-K.,Weifang Traditional Chinese Medicine Hospital | Wang J.-P.,Weifang Medical College | Xu Y.-M.,Shanghai JiaoTong University
Neurourology and Urodynamics | Year: 2010

Aims: To better understand the anatomy of the region of the male membranous urethra in order to preserve continence during radical cystectomy and prostatectomy. Methods: Cadaveric dissections of 15 male specimens were undertaken to investigate the nerves to membranous urethra. The nerves were traced from both an intrapelvic approach and a perineal approach. The origin, course, and distribution of the branches to the membranous urethra region were investigated in detail. Results: The membranous urethra is innervated by branches of inferior hypogastric plexus (IHP) and intrapelvic and extrapelvic branches of pudendal nerve (PN). The pelvic nerve fromIHP originated from the caudal most root of the pelvic splanchnic nerve, running along the surface of the levator ani muscle (LAM) to enter the membranous urethra at the 5 and 7 O'clock positions. In 40% of specimens we found that the intrapelvic branches were supplied by the PN. Before exiting the pudendal canal, PN gives off an intrapelvic branch that traverses the LAM to course with the pelvic nerve and innervate the membranous urethra; the distance between these intrapelvic branches and prostatic apex is 5.3 ± 1.8mm. The branches originating from the dorsal nerve of penis innervate the membranous urethra in 53.3% of specimens; these nerve branches are located 4.2 ± 1.1mm from the prostatic apex. Conclusions: Dissection of the seminal vesicles and the prostatic apex during radical cystectomy and prostatectomy likely injures the nerve responsible for continence. Neurourol. Urodynam. 29:592-595, 2010. © 2010 Wiley-Liss, Inc. Source

Zhu X.,Guangdong Medical College | Lin Z.,Guangdong Medical College | Du J.,Weifang Traditional Chinese Medicine Hospital | Zhou X.,Guangdong Medical College | And 2 more authors.
Molecular and Cellular Biochemistry | Year: 2014

Accumulating data indicate that cancer stem cells play an important role in tumorigenesis and are underlying cause of tumor recurrence and metastasis, specifically in chronic myeloid leukemia (CML). We aim to detect the miRNAs that are correlated with the cancer stem cells in CML to provide theoretical basis for clinical application. We first analyzed microRNA expression profiles of CML leukemia patients compared with normal controls by microarray analysis and validated the results by real-time PCR. A single microRNA signature classified CML from normal was detected. We also determined the absolute copy numbers of these three microRNAs in normal adults. The results showed that three microRNAs (miR-150, miR-23a, and miR-130a) were identified to significantly decrease in expanded 38 CML patients compared with 90 normal controls. Molecular and statistical analysis showed that the decreased microRNAs were significant in clinical analysis. All these results indicated that those three microRNAs could act as a tumor suppressor and their decreased expression might be one of the causes of leukemia. Accordingly, clarifying their regulatory mechanisms might delineate their potentials as drug targets of gene therapy for CML. © 2014 Springer Science+Business Media New York. Source

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