2401
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Huang Z, Chen X, Chen Y, Chen J, Dou M, Feng S, Zeng H, Chen R. Raman spectroscopic characterization and differentiation of seminal plasma. JOURNAL OF BIOMEDICAL OPTICS 2011; 16:110501. [PMID: 22112099 DOI: 10.1117/1.3650310] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Raman spectroscopy (RS) was applied for the analysis of seminal plasma in order to detect spectral parameters, which might be used for differentiating the normal and abnormal semen samples. Raman spectra of seminal plasma separated from normal and abnormal semen samples, showed a distinct difference in peak ratios between 1449 and 1418 cm(-1) (P < 0.05). More efficient alternative method of using principal component analysis-linear discriminate analysis based on Raman spectroscopic data yielded a diagnostic sensitivity of 73% and specificity of 82%. The results suggest that RS combined with the multivariate analysis method has the potential for differentiating semen samples by examination of the corresponding seminal plasma.
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2402
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Zhang F, Yang B, Lin Y, Chen S, Zhou G, Wang G, Chen X, Zhang Y, Tian H, Yu M, Shi Z, Zhang D. Dermatitis herpetiformis in China: a report of 22 cases. J Eur Acad Dermatol Venereol 2011; 26:903-7. [DOI: 10.1111/j.1468-3083.2011.04204.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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2403
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Yang B, Zhu X, Liang J, Chen X, Ding Q, Wan Y, Xu J. Aberrant expression of MBD genes in CD4+ T cells from patients with systemic lupus erythematosus. Lupus 2011; 21:111-3. [PMID: 21993382 DOI: 10.1177/0961203311422714] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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2404
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Wan X, Yang J, Xing L, Fan L, Hu B, Chen X, Cao C. Inhibition of IκB Kinase β attenuates hypoxia-induced inflammatory mediators in rat renal tubular cells. Transplant Proc 2011; 43:1503-10. [PMID: 21693225 DOI: 10.1016/j.transproceed.2011.01.179] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2010] [Accepted: 01/11/2011] [Indexed: 11/30/2022]
Abstract
OBJECTIVE Inflammation is now believed to play a major role in the pathophysiology of ischemic acute kidney injury (AKI), which is thought to be directly regulated by nuclear factor-κB (NF-κB). Our previous study indicated that ischemic preconditioning (IPC) alleviated renal ischemic-reperfusion injury due to inhibition of IκB kinase β (IKK β) activity. Using small interfering RNA (siRNA) to silence the expression of IKKβ, which consists of the IKK complex residing at a key convergence site that leads to NF-κB activation in multiple signaling pathways, we protected organs from ischemic AKI. Herein, we have report a siRNA-based treatment to prevent ischemic AKI. METHODS Ischemic AKI was induced by a hypoxia-mimicking agent cobalt chloride (CoCl(2)). The therapeutic effects of IKKβ-specific siRNA were evaluated on the expression of interleukin (IL)-18, neutrophil gelatinase-associated lipocalin (NGAL), and cell apoptosis. RESULTS Compared with CoCl(2)-induced NRK52E cells, pretransfected IKKβ-specific siRNA reduced the expression of IL-18 and NGAL to 62.5% and 50.4% in messenger RNA (mRNA) and to 57.2% and 62.7% in protein levels, respectively. The necrosis index in the IKKβ-specific siRNA transfected group was decreased compared with a nonspecific siRNA transfected group. CONCLUSIONS These data revealed that hypoxia-induced inflammatory responses were IKKβ/NF-κB-dependent. Knockdown of IKKβ by siRNA suppressed the transcription IKKβ/NF-κB-mediated inflammatory mediators in tumor necrosis factor-α or CoCl(2)-treated tubular epithelial cells, and decreased CoCl(2)-induced cell death, which may be a useful, preventive and therapeutic strategy for ischemic AKI.
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2405
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2406
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Liu Y, Tao L, Wang X, Cui H, Chen X, Ji B. Beneficial effects of using a minimal extracorporeal circulation system during coronary artery bypass grafting. Perfusion 2011; 27:83-9. [PMID: 21987667 DOI: 10.1177/0267659111424636] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Background: In this study, we assessed clinical results by using a minimal extracorporeal circuit (MECC) and compared it to a conventional cardiopulmonary bypass (CPB) system in patients undergoing coronary artery bypass grafting (CABG) procedures. Methods and Materials: From August to October 2006, forty consecutive patients undergoing isolated CABG procedures were randomly assigned to either a miniaturized closed circuit CPB with the Maquet-Cardiopulmonary MECC system (Group M, n=20) or to a conventional CPB system (Group C, n=20). Clinical outcomes were observed before, during and after the operation. Besides evaluating the perioperative clinical data, serial blood venous samples were obtained after induction, 30 minutes after CPB initiation, 2h, 6h, 12h, and 24h post-CPB. The focus of our study was on myocardial damage (cTnI), neutrophil and platelet counts, activated partial thromboplastin time (aPTT) and free hemoglobin. Results: Both the transfusion of packed red blood cells and fresh frozen plasma were significantly lower in Group M compared to Group C ( p<0.05). The levels of cTnI were lower in Group M at 2h, 6h and 12h post-CPB than in Group C ( p<0.01). The values of aPTT in Group M recovered to normal levels after surgery, but were prolonged in Group C at early post-CPB and were statistically longer than Group M at 2h, 6h, and 12h post-CPB ( p<0.05). The concentrations of free hemoglobin in Group C were higher than in Group M during and post-CPB, and there was a statistical difference at 2h post-CPB ( p<0.05). Conclusion: In conclusion, the MECC system is a safe alternative for patients who undertake extracorporeal circulation (ECC) for CABG surgery. Lower transfusion requirements and less damage to red cells may further promote the use of MECC systems, especially in higher risk patients.
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2407
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Wang H, Cao C, Zhang H, Chen X, Xiao C. Epidemiologic feature of fragment qrs complex of healthy population in Chinese community. BRITISH HEART JOURNAL 2011. [DOI: 10.1136/heartjnl-2011-300867.278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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2408
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Li L, Luo G, Chen X, Li Y, Xu G, Xu H, Bai J. Modelling evapotranspiration in a Central Asian desert ecosystem. Ecol Modell 2011. [DOI: 10.1016/j.ecolmodel.2011.09.002] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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2409
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Guo F, Wang X, Li G, Fan J, Chen X, Li L. Local interleukin-6 response is associated with the risk of no-flow in patients with ST elevation myocardial infarction undergoing percutaneous coronary intervention. BRITISH HEART JOURNAL 2011. [DOI: 10.1136/heartjnl-2011-300867.458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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2410
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Chen X, Xiao J, Li X. Half of Patients will Avoid Whole Brain Radiotherapy: Stereotactic Radiation Therapy for Multiple Brain Metastases. Int J Radiat Oncol Biol Phys 2011. [DOI: 10.1016/j.ijrobp.2011.06.1782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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2411
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Li N, Yao C, Chen X, Jing H, Gao Z, Wang L. A preliminary study on the application of BMSCs cell sheet on the formation of functional tissue-engineered bone in dogs. Int J Oral Maxillofac Surg 2011. [DOI: 10.1016/j.ijom.2011.07.231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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2412
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Zhang H, Wang H, Chen X, Xiao C. The association between serum uric acid and atrial fibrillation in community group of Taiyuan. BRITISH HEART JOURNAL 2011. [DOI: 10.1136/heartjnl-2011-300867.294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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2413
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Abstract
OBJECTIVE The aim of the article is to summarize experience in the pathology, diagnosis and treatment of spermatic cord liposarcoma (SCL). METHODS The clinical data of a patient with liposarcoma of the spermatic cord was reviewed in combination with related literature. RESULTS A 24-year-old male presented with a 1-year history of a mass in the right hemiscrotum. The tumor was resected and right inguinal orchidectomy was performed. The tumor had not recurred after 6 months follow-up. CONCLUSION Spermatic cord liposarcoma (SCL) is a rare medical condition and it is therefore difficult to establish guidelines for treatment, diagnosis and prognosis. Radical orchidectomy with wide local excision of the mass is the recommended therapy, while adjuvant radiotherapy may be considered in intermediate or high-grade tumors and recurrent liposarcomas. The role of chemotherapy is not well-defined.
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2414
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Zhou X, Chen L, Chen X. Irregular sound rhythm magnifies the temporal sequential effect in audiovisual temporal ventriloquism. J Vis 2011. [DOI: 10.1167/11.11.796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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2415
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Chen X, Shearer PM. Comprehensive analysis of earthquake source spectra and swarms in the Salton Trough, California. ACTA ACUST UNITED AC 2011. [DOI: 10.1029/2011jb008263] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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2416
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Chang Q, Chen J, Xie M, Liu W, Yu Y, Ye Q, Chen X. Crystal structure of Ir(acac-O,O)2(acac-C3)(pyridine). J STRUCT CHEM+ 2011. [DOI: 10.1134/s0022476611040299] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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2417
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Liu HH, Wang JW, Chen X, Zhang RP, Yu HY, Jin HB, Li L, Han CC. In ovo administration of rhIGF-1 to duck eggs affects the expression of myogenic transcription factors and muscle mass during late embryo development. J Appl Physiol (1985) 2011; 111:1789-97. [PMID: 21885804 DOI: 10.1152/japplphysiol.00551.2011] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
In ovo administration of IGF-1 to poultry eggs has effective roles on post hatching muscle development. However, the secondary muscle development stages at the late embryo development stage are important for muscle fiber formation and differentiation. To investigate the roles of in ovo administration of IGF-1 on duck secondary muscle development, we injected rhIGF-1 into duck eggs in hatching at day 12. After administration on days 18, 21, 24, and 27 in hatching (E18d, E21d, E24d, and E27d, respectively), muscle samples were isolated, and the muscle tissue weight, muscle fiber parameters, and myoblast proliferation rate in leg and breast muscle were analyzed. Additionally, the expression levels of the transcription factors MyoG and MRF4 were detected using qPCR. Results show that embryo body weight and muscle fiber parameters, including muscle fiber diameter (MFD) and the number of myofibers per unit area, are upregulated in IGF-1-treated groups. Moreover, the transcription factors MyoG and MRF4 are expressed at higher levels in the experimental groups compared with the control groups. These results suggest that in ovo administration of IGF-1 to poultry eggs can mediate the expression of MyoG and MRF4, induce myoblast proliferation, and finally influence muscle development during the secondary muscle development stages.
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Hausheer F, Ding D, Shanmugarajah D, Leverett B, Huang Q, Chen X, Kochat H, Ayala P, Petluru P, Parker A. Accumulation of BNP7787 in Human Renal Proximal Tubule Cells. J Pharm Sci 2011; 100:3977-84. [DOI: 10.1002/jps.22510] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2010] [Revised: 01/19/2011] [Accepted: 01/19/2011] [Indexed: 11/09/2022]
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2419
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Chen J, Zeng J, Xin M, Huang W, Chen X. Formononetin induces cell cycle arrest of human breast cancer cells via IGF1/PI3K/Akt pathways in vitro and in vivo. Horm Metab Res 2011; 43:681-6. [PMID: 21932171 DOI: 10.1055/s-0031-1286306] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Formononetin is one of the main components of red clover plants, and is considered as a typical phytoestrogen. This study further investigated that formononetin inactivated IGF1/IGF1R-PI3K/Akt pathways and decreased cyclin D1 mRNA and protein expression in human breast cancer cells in vitro and in vivo. MCF-7 cells were treated with different concentrations of formononetin. The proliferation of the cells treated with formononetin was tested by MTT assay. The cell cycle in the treated cells was examined by flow cytometry. The levels of p-IGF-1 R, p-Akt, and cyclin D1 protein expression and cyclin D1 mRNA expression in the treated cells were determined by Western blot and RT-PCR, respectively. In addition, the antitumor activity of formononetin was evaluated in nude mice bearing orthotopic tumor implants. Compared with the control, formononetin inhibited the proliferation of MCF-7 cells and effectively induced cell cycle arrest. The levels of p-IGF-1 R, p-Akt, cyclin D1 protein expression, and cyclin D1 mRNA expression were also downregulated. On the other hand, formononetin also prevented the tumor growth of human breast cancer cells in nude mouse xenografts. These results show that formononetin causes cell cycle arrest at the G0/G1 phase by inactivating IGF1/IGF1R-PI3K/Akt pathways and decreasing cyclin D1 mRNA and protein expression, indicating the use of formononetin in the prevention of breast cancer carcinogenesis.
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Zhang H, Chen X, Sairam MR. Novel hormone-regulated genes in visceral adipose tissue: cloning and identification of proinflammatory cytokine-like mouse and human MEDA-7: implications for obesity, insulin resistance and the metabolic syndrome. Diabetologia 2011; 54:2368-80. [PMID: 21688198 DOI: 10.1007/s00125-011-2212-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2011] [Accepted: 05/09/2011] [Indexed: 12/16/2022]
Abstract
AIMS/HYPOTHESIS We sought to characterise novel genes dysregulated by sex hormonal imbalances that induce obesity and metabolic disorder in a setting of oestrogen deficiency and androgen dominance in follicle-stimulating hormone receptor (For [also known as Fshr]) knockout female mice. METHODS Transcriptome analysis of mesenteric adipose tissue (MAT) of mutants revealed novel genes. One novel gene named Meda-7 was selected for study. Meda-7 was cloned from mouse and human adipose tissue; its expression, hormonal regulation and function were characterised. RESULTS Mouse Meda-7 is richly expressed in deep visceral adipose tissue and encodes a 22 kDa secreted protein with 71% homology to human mesenteric oestrogen-dependent adipose gene- 7 (MEDA-7) protein. Both have six conserved cysteines like many cytokines. In obese patients, MEDA-7 is more abundant in omental than subcutaneous fat. Meda-7 is downregulated in For-knockout female MAT at 5 months (obese state) followed by steep upregulation at 9 months (prediabetic condition) when mutants progress towards the metabolic syndrome. Meda-7 is expressed predominantly in the stromal-vascular cell fraction. In this fraction,M1-proinflammatorymacrophages are rich in Meda-7. Meda-7 dysregulation in 5-month-old For-knockout MAT is restored by oestrogen, but treatment has no effect in older mutants. Overabundance of MEDA-7 in HEK-293 cells enhances cell proliferation via p42/44 mitogen-activated protein kinases. Secreted MEDA-7 attenuates insulin-stimulated glucose uptake in 3T3-L1 adipocytes, while downregulating glucose transporter-4 and upregulating both monocyte chemotactic protein-1 and suppressor of cytokine signalling-3. Downstream activity of the insulin signalling mediator, phospho-AKT, is also downregulated. CONCLUSIONS/INTERPRETATION MEDA-7 is a hormone-regulated adipokine/proinflammatory cytokine that is implicated in causing chronic inflammation, affecting cellular expansion and blunting insulin response in adipocytes.
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2421
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Liu Y, Wang G, Wang S, Sun W, Qin X, Song B, Wang B, Chen X. Magnetism in defect-induced SiC single crystals. Acta Crystallogr A 2011. [DOI: 10.1107/s0108767311082110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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2422
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Wang W, Jiang L, Zuo S, Wang S, Li H, Zhu K, Wang J, Chen X. Growth of transition metal doped AlN single crystal and its stimulated emission. Acta Crystallogr A 2011. [DOI: 10.1107/s0108767311089756] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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2423
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Kim CY, Tollefsen S, Hotta K, Chen X, Simonsen B, Jayaraman P, Swaminathan K, Mathews I, Sollid LM. Structural and functional investigation of the trans-encoded HLA-DQ8/2. Acta Crystallogr A 2011. [DOI: 10.1107/s0108767311086223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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2424
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Hotta K, Chen X, Paton RS, Minami A, Li H, Swaminathan K, Mathews I, Watanabe K, Oikawa H, Houk KN, Kim CY. Structural study of enzymatic anti-Baldwin ring closure in polyether formation. Acta Crystallogr A 2011. [DOI: 10.1107/s0108767311094645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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2425
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Chen X, Song CH, Liu ZQ, Feng BS, Zheng PY, Li P, In SH, Tang SG, Yang PC. Intestinal epithelial cells express galectin-9 in patients with food allergy that plays a critical role in sustaining allergic status in mouse intestine. Allergy 2011; 66:1038-46. [PMID: 21426359 DOI: 10.1111/j.1398-9995.2011.02585.x] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
BACKGROUND AND AIMS Mechanisms in sustaining the allergic hypersensitivity status in the body are unclear. Galectin-9 (Gal-9) has strong immune regulatory capacity. The present study aims to elucidate the role of Gal-9 in sustaining allergic status in the intestine. METHODS Duodenal biopsies were obtained from 20 patients with peptic ulcer and food allergy (FA). The expression of Gal-9 in intestinal tissue was examined at both protein level and mRNA level. Two coculture systems with intestinal epithelial cells (IEC) and mast cells, or dendritic cells (DC) and T cells were established to investigate the source of Gal-9 in the intestine and the mechanism by which Gal-9 modulated DC's phenotyping and sustained the T helper 2 polarization. RESULTS Normal IEC showed mild expression of Gal-9 that was markedly enhanced in patients with FA. Mast cells had the capability to induce IEC to produce Gal-9 via releasing tryptase that activated the proteinase-activated receptor 2 on IEC. Gal-9 activated DC to produce TIM4 (T-cell immunoglobulin mucin domain) via ligating TIM3 on DC via activating the cyclic guanosine monophosphate (cGMP) pathway. In a mouse FA model, blocking Gal-9 inhibited the allergic hypersensitivity status and the antigen-specific Th2 response in the intestine. CONCLUSIONS IEC-derived Gal-9 contributes to sustaining the allergic status in the intestine.
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