Wang X.-F.,Beijing Army General Hospital |
Wang J.,Tsinghua University
Acta Pharmacologica Sinica | Year: 2014
Aim: To explore whether icaritin, a prenylflavonoid derivative of the Chinese tonic herb Epimedium, could suppress the proliferation of human osteosarcoma cells in vitro, and to elucidate the mechanisms of the action.Methods:Human osteosarcoma SaOS 2 cell line was used in the present study. The proliferation of the cells was examined using MTT assay and immunofluorescence DAPI staining. Cell motility was studied with the scratch assay. Cell apoptosis was determined by Annexin V-FITC and PI double staining using flow cytometry. Western blotting and RT-PCR were used to measure the expression of mRNAs and proteins in the cells. Results: Icaritin (5-15 μmol/L) suppressed the proliferation of SaOS 2 cells in vitro in a dose-dependent manner. Furthermore, the cell motility was significantly decreased after exposure to icaritin. Moreover, icaritin (5 μmol/L) time-dependently induced the apoptosis of SaOS 2 cells, markedly suppressed MMP-2 and MMP-9 expression, upregulated caspase-3 and caspase-9 expression, and increased the level of cleaved caspase-3 in the cells. Co-exposure to the caspase-3 inhibitor zVAD-fmk (10 μmol/L) compromised the icaritin-induced caspase-3 expression and apoptosis in SaOS 2 cells. Conclusion: Icaritin suppresses the proliferation of SaOS 2 human osteosarcoma cells by increasing apoptosis and downregulating MMP expression. © 2014 CPS and SIMM.
Wang D.,Stoke Mandeville Hospital |
Sun T.,Beijing Army General Hospital
Spinal Cord | Year: 2011
Study design: Literature review. Objective: To study the progress that has been made in neural plasticity for the past few decades. Setting: United Kingdom/China. Methods: An electronic search of relevant publications through PubMed was conducted using two key words: 'axonal regeneration' and 'neural plasticity'. The search included publications of the past three decades of all languages and of both animal and human studies. After confirmation of immense increase of publications on neural plasticity, reviewing of neural plasticity alone was conducted. The review covered only the most important and clinically relevant publications. For convenience of reading by busy clinicians, discussions focused on cellular and functional levels, and only the most investigated molecules were mentioned. The size of references is also planned to be concise rather than comprehensive into three digits. Results: Neural plasticity is about memory and learning. The entire process of neural plasticity is presented in the sequence of (1) lesion-induced plasticity, (2) clearance of debris, (3) collateral sprouting (4) potentiation. The recent discovery and understanding of the important role of Chondroitinase in clearance of debris is discussed in detail. Conclusion: Neural plasticity has enormous potentials in facilitating functional recovery. It is a realistic target than structural axonal regeneration at current level of neuroscience. © 2011 International Spinal Cord Society All rights reserved.
Li S.,Beijing Army General Hospital
Chinese Journal of Gastroenterology | Year: 2015
Crohn's disease (CD) is a chronic, progressive and destructive intestinal inflammatory disease, frequently associated with tissue and functional damage in intestinal tract. There is no specific clinical feature at its early stage, 30%~50% of the patients are associated with various complications at the time of diagnosis and are quite difficult to cure. Opportunistic screening performed in high risk population is a valuable strategy for early finding (pre-lesion of CD) and early diagnosis (CD without complication). Colonoscopy and screening of serum and fecal markers might be the methods for early diagnosis. Early treatment may alter the natural history of the disease. COPYRIGHT © 2015 by the Editorial Office of Chinese Journal of Gastroenterology.
Sun T.,Beijing Army General Hospital |
Wang X.,Beijing Army General Hospital |
Liu Z.,Beijing Army General Hospital |
Chen X.,Beijing Army General Hospital |
Zhang J.,Beijing Army General Hospital
Injury | Year: 2011
Background: Hip fractures, particularly intertrochanteric fractures, frequently occur in the elderly, and they are associated with a high incidence of complications and mortality. The development of markers is essential to allow for adjustments to treatment strategies in patients, as it remains unclear why some patients endure organ failure and others do not under seemingly similar clinical conditions. Objective: Our objective was to determine the kinetics of tumour necrosis factor (TNF)-a, interleukin (IL)-6 and IL-10 during the hospitalisation of patients and to examine the relationship of these parameters to outcome (mortality and complications) 6 months and 12 months postoperatively. Methods and subjects: A total of 127 elderly patients, who underwent hip fracture surgery, were prospectively followed up for 12 months, and 60 healthy elderly volunteers were enrolled in the control group to examine the effects of trauma and surgery on the inflammatory response. The epidemiological characteristics, chronic medical conditions and type of operation and anaesthetic were recorded. Cognition was evaluated using the Mini-Mental State Examination, and TNF-a, IL-6 and IL-10 levels were assessed during admission and preoperatively (post-anaesthesia) as well as 1 h, 1 day, 3 days and 5 days postoperatively. During the follow-up period, serious complications and mortality within 1 year were evaluated. Results: Overall, 96 patients survived, and 31 died within the 6-month postoperative period; 43 patients died, and 84 survived when examining the 12-month postoperative period. There were significant within-subject effects of time on TNF-a, IL-6 and IL-10 (P < 0.001, P < 0.001 and P < 0.001). The above three cytokines were all significantly increased in the hip fracture patients compared with the control group. There were also differences in the kinetic patterns of all three parameters when the patients who died were compared with those who survived during the 6-month and 12-month postoperative periods. Multiple logistic regression analysis showed that TNF-a at 1 day (odds ratio (OR) = 1.020, P = 0.045) and 3 days (OR = 1.034, P = 0.037) postoperatively and IL-6 at 1 day (OR = 1.048, P = 0.000) postoperatively were independent predictors of mortality at 6 months; IL-6 (OR = 1.019, P = 0.025) and IL-10 (OR = 1.018, P = 0.042) at 1 day postoperatively were independent predictors of mortality at 1 year. The analysis of the receiver operating characteristics curve (ROC) showed that only IL-6 or IL-10 had the highest values for the area under the curve for mortality at 6 months and 12 months. Of the 84 patients who survived, 23 patients had 32 complications. The most common complication was pneumonia infection (11/84, 13%). TNF-a, IL-6 and IL-10 kinetics were found to differ in patients with complications compared to those without complications and in patients with infections compared with patients without complications. Multiple logistic regression analysis showed that IL-6 (OR = 1.081, P = 0.000) at 1 day postoperatively was an independent outcome predictor. Conclusion: In elderly hip fracture patients, cytokine concentrations (TNF-a, IL-6 and IL-10) represented independent outcome predictors for adverse postoperative outcomes (mortality and complications). The inflammatory response played an important role in postoperative organ dysfunction in elderly hip fracture patients, and further study is needed to define whether decreasing the inflammatory response through cytokine antibodies or damage control strategies would decrease mortality and complication following hip fracture. Crown Copyright © 2011 Published by Elsevier Ltd. All rights reserved.
Shi C.,Shanghai University of Traditional Chinese Medicine |
Li H.,Beijing Army General Hospital |
Yang Y.,Shanghai University of Traditional Chinese Medicine |
Hou L.,Harvard University
Mediators of Inflammation | Year: 2015
Artemisinin and its derivatives are widely used in the world as the first-line antimalarial drug. Recently, growing evidences reveal that artemisinin and its derivatives also possess potent anti-inflammatory and immunoregulatory properties. Meanwhile, researchers around the world are still exploring the unknown bioactivities of artemisinin derivatives. In this review, we provide a comprehensive discussion on recent advances of artemisinin derivatives affecting inflammation and autoimmunity, the underlying molecular mechanisms, and also drug development of artemisinins beyond antimalarial functions. © 2015 Chenchen Shi et al.
Zhang J.-Z.,Beijing Army General Hospital |
Liu Z.,Beijing Army General Hospital |
Liu J.,Beijing Army General Hospital |
Ren J.-X.,Beijing Army General Hospital |
Sun T.-S.,Beijing Army General Hospital
International Journal of Molecular Medicine | Year: 2014
Mitochondrial DNA (mtDNA) contains unmethylated CpG motifs that exhibit immune stimulatory capacities. The aim of this study was to investigate whether mtDNA activates the Toll-like receptor 9 (TLR9)/nuclear factor-κB (NF-κB) pathway, thereby contributing to post-traumatic systemic inflammatory response syndrome (SIRS) and lung injury in rats. The effects of mtDNA on macrophage culture were examined in order to elucidate the putative cellular mechanisms. Rats and macrophage cultures were treated with phosphate-buffered saline, nuclear DNA, or mtDNA for 2, 4, 8 and 24 h. Histological analysis of lung tissue was undertaken following hematoxylin and eosin staining, and cytokine levels were assessed by ELISA. NF-κB and IκB-α phosphorylation levels, as well as TLR9 protein expression were determined by western blot analysis; NF-κB, IκB-α and TLR9 mRNA levels were analyzed by RT-PCR. A greater degree of inflammation and lung injury was observed in response to mtDNA. In addition, mtDNA increased serum tumor necrosis factor-α, interleukin (IL)-6 and IL-10 levels in vivo and increased their secretion by cultured macrophages (p<0.05). In lung tissue, mtDNA increased NF-κB, IκB-α and TLR9 mRNA levels (p<0.05); it also increased phosphorylated NF-κB p65 and TLR9 protein levels in the macrophage cultures. Thus, mtDNA may be part of the danger-associated molecular patterns, contributing to the initiation of sterile SIRS through the activation of the TLR9/NF-κB pathway and the induction of pro-inflammatory cytokine production.
Li L.H.,Beijing Army General Hospital
Zhongguo gu shang = China journal of orthopaedics and traumatology | Year: 2013
To assess the early efficacy of metallic modular radial head prostheses in patients with Mason III and IV unreconstructable radial head fractures. The medical records of 16 patients (9 males, 7 females) with a mean age of 43 years old (31 to 57) with Mason III/IV unreconstructable radial head fractures requiring metallic modular radial head replacement between January 2009 and March 2012, were reviewed retrospectively. The functional results were assessed by range-of-movement, Mayo elbow performance score (MEPS). All patients underwent radiographic evaluation for radial head height and radiolucent lines. Fourteen patients were evaluated with follow-up for 12 to 33 months with an average of 23 months. Range of movement parameters was significantly lower in the affected elbow than in the unaffected side (P < 0.01). MEPS results were excellent in 9 cases, good in 2 cases, fair in 2 cases, and poor in 1 case. According to Grewal grading, there were 4 cases of periprosthetic lucencies of the radius and 1 case had significant clinical signs of loosening. Radial head replacement with the metallic modular prostheses yields satisfactory results regarding range of motion and function of the elbow joint in short term. The evolution of this prostheses needs to be evaluated with further studies to assess mid-term and long-term follow-up results.
Li S.Y.,Beijing Army General Hospital
Zhonghua wei chang wai ke za zhi = Chinese journal of gastrointestinal surgery | Year: 2010
To evaluate the clinical efficacy, feasibility and safety of sphincter-preservation with telescopic anastomosis of colon and rectal mucosa in low-middle rectal cancer. A retrospective analysis was carried out in 371 patients with low-middle rectal cancer in whom telescopic anastomosis was used. There were 224 males and 147 females, with a mean age of 57.9 (21-99) years. The lower margins of the tumors located between 5-8 cm from the anal verge. On histopathology, there were 361 adenocarcinomas, including 138 well-differentiated, 201 moderately differentiated, 11 poorly differentiated, 11 mucinous adenocarcinoma, and 10 adenomas with neoplastic changes. According to the Duke's stage classification, 120 were TNM stage I, 222 stage II, 26 stage III, and 3 stage IV. Three hundred and eighteen (318/371, 85.7%) cases were followed up, and the median follow up time was 5.8 years. Postoperative complications were observed, including 16(4.3%) cases with anastomotic leak, and 8 (2.1%) with anastomotic stenosis. All the patients resumed normal bowel function during 12-24 weeks after operation, with 1-3 times per day. The local recurrence rate was 6.3% (20/318). Hepatic and lung metastasis was 14.5% (46/318) and 2.5% (8/318), respectively. The 5-year survival rate was 69.7%. The sphincter-preservation with telescopic anastomosis procedure is safe and effective for low-middle rectal cancer, and the sphincter function can be well-preserved.
Wu J.,Beijing Army General Hospital |
Yang X.,Capital Medical University |
Chen B.,Beijing Army General Hospital |
Xu X.,Beijing Army General Hospital
Experimental and Therapeutic Medicine | Year: 2015
Diabetes mellitus, which may cause hyperglycemia and a number of complications, mostly results from a deficiency of β cell mass (type 1 diabetes) or a limitation of β cell function (type 2 diabetes). Currently, enhancing β cell regeneration and increasing cell proliferation have not only been described in experimental diabetes models, but have also been proven to improve outcomes for patients with diabetes. Therefore, understanding the mechanisms controlling the development and regeneration of β cells in the human pancreas may be helpful for the treatment of β cell-deficient disease. In this review, we first introduce the various cell types in the adult pancreas and thereby clarify their functions and origins. Then, the known mechanisms of β cell development and expansion in the normal human pancreas are described. The potential mechanisms of β cell regeneration, including β cell self‑replication, neogenesis from non‑β cell precursors and transdifferentiation from α cells, are discussed in the next part. Finally, the ability of the pancreas to regenerate mature β cells is explored in pathological conditions, including type 1 diabetes, chronic pancreatitis and persistent hyperinsulinemic hypoglycemia of infancy. © 2015, Spandidos Publications. All rights reserved.
Li S.G.,Beijing Army General Hospital
Zhongguo gu shang = China journal of orthopaedics and traumatology | Year: 2012
To explore the therapeutic effects of VSD combined with fascio-cutaneous flap transferation staging operation for the treatment of post-traumatic osteomyelitis. From December 2007 to December 2009, 14 patients were treated with the technology of VSD combined with fascio-cutaneous flap transferation staging operatinon. Nine patients were males and 5 patients were females, and mean age was 36 years. All the patients were postoperative wound infection. Osteomyelitis of the tibia was in 9 cases, calcaneus in 3 cases, femur in 1 case, radius and ulna in 1 case; infection of time were from 2 to 96 weeks, an average time of 32 weeks. All the patients were followed up, and the duration ranged from 12 to 36 months, with an average of 19.2 months. All the patients were treated with debridement and VSD for 1 to 3 times, with an average of 1.57 times. The wounds of 13 cases healed well after flaps transferation, but of 1 case leakaged and healed after 3 weeks with the therapy of drainaging and changing dressings. Due to delayed healing or defects of bone, 8 patients had autologous bone grafted on the second stage. All wounds and fractures healed without recurrence of postoperative infection. VSD combined with flap transferation is an effective treatment of post-traumatic osteomyelitis, which can shorten the treatment time and have better security and reliability than traditional methods.