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Zhang YY, Chen GH, Xu Q, Zhang HB, Duan XJ, Zhao WM, Sun GB. Polymorphism in Intron-1 of ApoVLDL-II Gene and its Association with Production Traits and Biochemical Levels in White Muscovy ( Cairina moschata). JOURNAL OF APPLIED ANIMAL RESEARCH 2010. [DOI: 10.1080/09712119.2010.9707148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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677
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Zampetaki A, May D, Oren G, Yin X, Xu Q, Horrevoets A, Keshet E, Mayr M. BAS/BSCR31 Metabolic homoeostasis is maintained in myocardial hibernation by adaptive changes in the transcriptome and proteome. BRITISH HEART JOURNAL 2010. [DOI: 10.1136/hrt.2010.205781.42] [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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678
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Shi M, Xu Q, Zhang R, Zhang T. Pd-NHC Complexes-Catalyzed Asymmetric 1,4-Addition. ACTA ACUST UNITED AC 2010. [DOI: 10.1055/s-0030-1257995] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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679
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Li B, Wang XY, Tian Z, Xiao XJ, Xu Q, Wei CX, Y F, Sun HC, Chen GH. Directional differentiation of chicken spermatogonial stem cells in vitro. Cytotherapy 2010; 12:326-31. [PMID: 20078389 DOI: 10.3109/14653240903518155] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
BACKGROUND Mammalian spermatogonial stem cells (SSC) are able to differentiate into different cell types in vitro, which are valuable sources for regenerative medicine and gene transfer studies. We investigated the differentiation potential of chicken SSC into osteoblasts, neuron-like cells and adipocytes in vitro. METHODS Chicken SSC from the testes of 18- and 20-day-old chicken embryos were cultured in different induction media for three passages in vitro. For differentiation into osteoblasts, SSC were cultured in Dulbecco's modified Eagle medium (DMEM) supplemented with 1 x 10(-4) micromol/mL desamethasone, 10 micromol/mL (beta-sodium glycerophosphate and 0.05 mg/mL vitamin C, and examined by microscopy after Von Kossa's, cytochemical and immunohistochemical staining. For differentiation into neuron-like cells, SSC were cultured in DMEM supplemented with 1 x 10(-3) micromol/mL retinoic acid (RA), 5.0 micromol/mL 3-isobutyl-1-methylxanthine (IBMX) and examined by microscopy after toluidine blue or immunohistochemical staining. For differentiation into adipocytes, SSC were cultured in DMEM supplemented with 1 x 10(-3) micromol/mL dexamethasone, 0.01 mg/mL insulin, 0.5 micromol/mL IBMX and examined by microscopy after Oil red O staining and reverse transcriptase-polymerase chain reaction (RT-PCR) for gene expression of peroxisome proliferation activation receptor-gamma (PPAR-gamma). RESULTS After 15 and 21 days of culture in the induction medium for osteoblast differentiation, 75% and 80% chicken SSC differentiated into osteoblasts, as confirmed by Von Kossa's, calcium-cobalt and collagen I antibody staining. After 3 and 7 days of culture in the induction medium for neuron-like cell differentiation, 78% and 85% SSC became neuron-like cells, as confirmed by staining with toluidine blue and the monoclonal antibody against neuron-specific enolase, nestin and glial fibrillary acidic protein. After 7 days of culture in the induction for adipocyte differentiation, 85% SSC differentiated into adipocytes, as confirmed by Oil red O staining and RT-PCT for PPAR-gamma gene expression. DISCUSSION Our results show that chicken SSC can differentiate into osteoblasts, neuron-like cells and adipocytes under similar conditions as for directional differentiation of mammalian SSC in vitro. The findings show the feasibility of using SSC-derived cells for developmental biology and gene transfer studies in chickens.
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680
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You L, Li L, Zhang F, Xu Q, Ren J. A pilot study of the clinical relevance of the relationship between the serum level of pregnancy-associated plasma protein A and the degree of acute coronary syndrome. J Int Med Res 2010; 38:625-32. [PMID: 20515576 DOI: 10.1177/147323001003800225] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Serum levels of pregnancy-associated plasma protein-A (PAPP-A), high-sensitivity C-reactive protein (hs-CRP) and tumour necrosis factor-alpha (TNF-alpha) were measured in 70 patients with acute coronary syndrome (ACS), comprising 18 with unstable angina (UA), 37 with acute myocardial infarction (AMI) and 15 with stable angina (SA); 15 healthy controls were also included. Levels of PAPP-A were significantly higher in the UA and AMI groups than in the SA and control groups. Levels of PAPP-A were similar in the SA and control groups, and higher in the ACS patients who were cardiac troponin T-negative (comprising UA and AMI patients) than in the control and SA groups. Levels of hs-CRP and TNF-alpha were significantly higher in the SA group than in the control group, significantly higher in the UA group than in the SA and control groups, and significantly higher in the AMI group than in all other groups. Levels of PAPP-A in ACS patients were positively correlated with levels of hs-CRP and TNF-alpha. It would seem, therefore, that PAPP-A is associated with inflammation and might be used to detect plaque instability and rupture before an increase in cardiac troponin T is detectable.
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681
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Tai C, Li S, Xu Q, Ying H, Huang H, Ouyang P. Chitosan production from hemicellulose hydrolysate of corn straw: impact of degradation products on Rhizopus oryzae growth and chitosan fermentation. Lett Appl Microbiol 2010; 51:278-84. [PMID: 20636326 DOI: 10.1111/j.1472-765x.2010.02893.x] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
AIMS To examine the potential use of hemicellulose hydrolysate (HH) for the production of chitosan by Rhizopus oryzae and investigate the influence of contents in HH on mycelia growth and chitosan synthesis. METHODS AND RESULTS Compared to xylose medium, HH enhanced mycelia growth, chitosan content and production of R. oryzae by 10.2, 64.5 and 82.1%, respectively. During sulfuric acid hydrolysis of corn straw, sugars (glucose, galactose, etc) and inhibitors (formic acid, acetic acid and furfural) were generated. Acetic acid (2.14 g l(-1)) and formic acid (0.83 g l(-1)) were stimulative, while furfural (0.55 g l(-1)) was inhibitory. Inhibitors, at different concentrations, increased the mycelia growth and chitosan production by 24.5-37.8 and 60.1-207.1%. CONCLUSIONS HH of corn straw is a good source for chitosan production. Inhibitors in HH, at proper concentrations, can enhance chitosan production greatly. SIGNIFICANCE AND IMPACT OF THE STUDY This work for the first time reported chitosan production from HH. Chitosan production can be greatly enhanced by cheap chemicals such as inhibitors in HH.
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682
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683
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Xu Q, Li J, Fan J, Chen Y, Tanyi J, Hossain M, Chen L, Yang B, Ma C. SU-GG-J-101: Investigation of Intrafractional Prostate Rotation and Its Effect on PTV Margin Evaluation. Med Phys 2010. [DOI: 10.1118/1.3468325] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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684
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Fan J, Li J, Jin L, Wang L, Xu Q, Ma C. WE-C-BRA-07: Multi-Leaf Collimators for Robotic Radiotherapy: Feasibility Study. Med Phys 2010. [DOI: 10.1118/1.3469369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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685
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Yang B, Xu Q, Wu F, Liu F, Ye X, Meng X, Mougin B, Liu G, Zhimin S, Wu J. Use of peripheral blood mRNA signature to distinguish patients with breast cancer from benign breast disease and nonconclusive mammography. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.10581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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686
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Xu Y, Ni S, Xu Q, Liu F, Wu F, Ye X, Meng X, Mougin B, Du X, Cai S. Use of peripheral blood mRNA signatures to distinguish colorectal cancer patients from colonoscopy-negative patients. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.10564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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687
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Qiu Y, Zhu X, Wang W, Xu Q, Ding Y. Nutrition support with glutamine dipeptide in patients undergoing liver transplantation. Transplant Proc 2010; 41:4232-7. [PMID: 20005375 DOI: 10.1016/j.transproceed.2009.08.076] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2008] [Revised: 03/30/2009] [Accepted: 08/04/2009] [Indexed: 11/19/2022]
Abstract
AIM The effect of total parenteral nutrition (TPN) support supplemented with alanyl-glutamine (Ala-Gln) dipeptide was investigated in a randomized, controlled clinical trial. METHODS Sixty-five patients with the diagnosis of end-stage liver disease or hepatic cellular carcinoma admitted for orthotopic liver transplantation were randomly divided into 3 groups: diet group (n = 21), TPN group (n = 22), and Gln group (n = 22). Patients in the TPN and Gln groups received isocaloric and isonitrogenous TPN for 7 days. Venous heparin blood samples were obtained for assay on days 2 and 9 after surgery; we performed routine pathologic tests. RESULTS Compared with the results on day 9 in the TPN group, there was a significant increase in the prognostic nutrition index and in prealbumin among the Gln group. Aspartate aminotransferase improved significantly by Gln treatment compared with traditional TPN support (P < .05). The pathologic results also showed Gln supplementation to reduce hepatic cell injury. A significant decrease in postoperative hospital stay was observed in the Gln group. CONCLUSIONS Posttransplant TPN support greatly improved protein metabolism and nutritional state of patients. TPN with Ala-Gln helped to improve synthetic function and to reduce the injury to a transplanted liver.
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688
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Chen H, Huang X, Guo X, Mailman RB, Park Y, Kamel F, Umbach DM, Xu Q, Hollenbeck A, Schatzkin A, Blair A. Smoking duration, intensity, and risk of Parkinson disease. Neurology 2010; 74:878-84. [PMID: 20220126 DOI: 10.1212/wnl.0b013e3181d55f38] [Citation(s) in RCA: 160] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE To evaluate the relative importance of smoking duration vs intensity in reducing the risk of Parkinson disease (PD). METHODS The study included 305,468 participants of the NIH-AARP Diet and Health cohort, of whom 1,662 had a PD diagnosis after 1995. We estimated odds ratios (OR) and 95% confidence intervals from multivariate logistic regression models. RESULTS Compared with never smokers, the multivariate ORs were 0.78 for past smokers and 0.56 for current smokers. Among past smokers, a monotonic trend toward lower PD risk was observed for all indicators of more smoking. Stratified analyses indicated that smoking duration was associated with lower PD risk within fixed intensities of smoking. For example, compared with never smokers, the ORs among past smokers who smoked >20 cigarettes/day were 0.96 for 1-9 years of smoking, 0.78 for 10-19 years, 0.64 for 20-29 years, and 0.59 for 30 years or more (p for trend = 0.001). In contrast, at fixed duration, the typical number of cigarettes smoked per day in general was not related to PD risk. Close examination of smoking behaviors in early life showed that patients with PD were less likely to be smokers at each age period, but if they smoked, they smoked similar numbers of cigarettes per day as individuals without PD. CONCLUSIONS This large study suggests that long-term smoking is more important than smoking intensity in the smoking-Parkinson disease relationship.
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689
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Wu F, Cao J, Jiang J, Yu B, Xu Q. Ruscogenin glycoside (Lm-3) isolated from Liriope muscari improves liver injury by dysfunctioning liver-infiltrating lymphocytes. J Pharm Pharmacol 2010; 53:681-8. [PMID: 11370707 DOI: 10.1211/0022357011775802] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Abstract
The effects of ruscogenin 1-O-[β-d-glucopyranosyl(1 → 2)] [β-d-xylopyranosyl(1 → 3)]-β-d-fucopyranoside (Lm-3) and its aglycone, ruscogenin, on liver injury induced in mice by delayed-type hypersensitivity to picryl chloride have been investigated. Lm-3 and ruscogenin significantly decreased liver injury when given during the effector phase of the delayed-type hypersensitivity reaction. The pretreatment of nonparenchymal cells, but not hepatocytes, with Lm-3 or ruscogenin in-vitro caused a concentration- and time-dependent inhibition against the damage. Lm-3 showed a stronger inhibition against the damage than ruscogenin (IC50: Lm-3 6.3 times 10−10 m, ruscogenin 3.9 times 10−7 m). However, neither Lm-3 nor ruscogenin blocked the hepatotoxic potential of CCl4, when used to pretreat hepatocytes. Moreover, Lm-3 and ruscogenin inhibited concanavalin A-induced lymphocyte proliferation only at high concentrations. These results suggested that Lm-3 and ruscogenin improved the immunological liver injury by selectively causing dysfunction of the liver-infiltrating cells rather than by protecting hepatocyte membranes. Such characteristics would be significant for treating immunologically related liver diseases as well as for developing new drugs.
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690
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Hor YS, Williams AJ, Checkelsky JG, Roushan P, Seo J, Xu Q, Zandbergen HW, Yazdani A, Ong NP, Cava RJ. Superconductivity in CuxBi2Se3 and its implications for pairing in the undoped topological insulator. PHYSICAL REVIEW LETTERS 2010; 104:057001. [PMID: 20366785 DOI: 10.1103/physrevlett.104.057001] [Citation(s) in RCA: 245] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2009] [Indexed: 05/25/2023]
Abstract
Bi2Se3 is one of a handful of known topological insulators. Here we show that copper intercalation in the van der Waals gaps between the Bi2Se3 layers, yielding an electron concentration of approximately 2x10{20} cm{-3}, results in superconductivity at 3.8 K in CuxBi2Se3 for 0.12<or=x<or=0.15. This demonstrates that Cooper pairing is possible in Bi2Se3 at accessible temperatures, with implications for studying the physics of topological insulators and potential devices.
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691
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Xian J, Xu Q, Wang Z, Yang B, Wei W, Yan Z, Sun J, Shi J, Young GS. MR imaging of adenomas of the nonpigmented ciliary epithelium of the eye. AJNR Am J Neuroradiol 2010; 31:886-90. [PMID: 20044507 DOI: 10.3174/ajnr.a1947] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE ANPCEs are rare benign tumors of the eye arising from the NPCE in adults, which may be clinically mistaken for melanoma. This study was undertaken to delineate clinical and MR imaging features of these tumors. MATERIALS AND METHODS Clinical presentation and MR imaging findings of 8 patients (6 women and 2 men; median age, 51 years) with pathologically confirmed ANPCEs were retrospectively reviewed. Location, size, shape, margin, signal intensity, and gadolinium-enhancement characteristics of all tumors were evaluated. Signal intensity and degree of enhancement were graded in comparison with the ipsilateral lacrimal gland. RESULTS MR imaging revealed a circumscribed enhancing mass within the ciliary body of the eye in all 8 patients. The mass was ovoid in 6 patients and spheric in 2. Gadolinium enhancement was marked in 4 lesions and moderate in the other 4. Both T1 and T2 relaxation times were qualitatively identical to those in the lacrimal gland in 2 tumors. In the remaining 6 tumors, the T1 was identical to and the T2 longer than that in the lacrimal gland. CONCLUSIONS ANPCE should be included in the differential diagnosis of a spheric or ovoid enhancing ciliary body mass with T1 similar to that in the lacrimal gland and T2 equal to or longer than that in the lacrimal gland.
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692
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Fleckenstein J, Irnich D, Goldman N, Chen M, Fujita T, Xu Q, Peng W, Liu W, Jensen T, Pei Y, Wang F, Han X, Chen J, Schnermann J, Takano T, Bekar L, Tieu K, Nedergaard M. Adenosine A1 receptors mediate local anti-nociceptive effects of acupuncture. DEUTSCHE ZEITSCHRIFT FUR AKUPUNKTUR 2010. [DOI: 10.1016/j.dza.2010.08.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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693
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Zhao Y, Li J, Xue Q, Gao L, Xu Q, Wu X. Etiology, comorbidity and prognosis of hospitalized patients with congestive heart failure. Crit Care 2010. [PMCID: PMC2934129 DOI: 10.1186/cc8361] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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694
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Xu Q, Jennings N, Kiriazis H, Dart A, Du X. Cardiac Angiogenesis Promoted by β2-adrenergic Activation is Crucially Involved in Maintaining Cardiac Function. Heart Lung Circ 2010. [DOI: 10.1016/j.hlc.2010.06.821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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695
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Yang G, Yang C, Xu Q, Zheng W, Li S. Enhancement mechanism of field electron emission properties in hybrid carbon nanotubes with tree- and wing-like features. J SOLID STATE CHEM 2009. [DOI: 10.1016/j.jssc.2009.10.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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696
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Ma J, Xiao S, An J, Wang X, Xu Q, Dong Y, Feng Y, Wang J. A novel splicing mutation and haplotype analysis of the FECH gene in a Chinese family with erythropoietic protoporphyria. J Eur Acad Dermatol Venereol 2009; 24:726-9. [DOI: 10.1111/j.1468-3083.2009.03471.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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697
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Ma C, Shan G, Hu W, Xu Q, Fan J, Mohamed I, Chen L. A Dose-guided, Volumetric Target Localization Technique for Prostate IGRT. Int J Radiat Oncol Biol Phys 2009. [DOI: 10.1016/j.ijrobp.2009.07.1323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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698
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Xu Q, Li J, Chen Y, Price R, Fan J, Jin L, Ma C. Investigation of Transponder Migration and the Effects on Prostate Localization: A Cone Beam CT Study. Int J Radiat Oncol Biol Phys 2009. [DOI: 10.1016/j.ijrobp.2009.07.078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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699
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Kiechl S, Laxton R, Xiao Q, Willeit J, Xu Q, Ye S. CAD RELATED VARIATION ON CHROMOSOME 10q11 IS ASSOCIATED WITH CIRCULATING SDF-1ALPHA LEVEL AND CAROTID INTIMA-MEDIA THICKNESS AND ATHEROSCLEROSIS. Atherosclerosis 2009. [DOI: 10.1016/j.atherosclerosis.2009.09.034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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700
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Klitz W, Gragert L, Maiers M, Tu B, Lazaro A, Yang R, Xu Q, Masaberg C, Ng J, Hurley CK. Four-locus high-resolution HLA typing in a sample of Mexican Americans. ACTA ACUST UNITED AC 2009; 74:508-13. [PMID: 19845916 DOI: 10.1111/j.1399-0039.2009.01374.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Mexicans are the most common minority population of the United States. From a sample of 553 bone marrow donor registrants of self-described Mexican ancestry, human leukocyte antigen (HLA) loci A, C, B and DRB1 were typed by high resolution sequence based typing (SBT) methods. A total of 47, 34, 76 and 46 distinct alleles at A, C, B and DRB1 respectively were identified, including 3 new alleles. The four-locus haplotype frequency distribution was extremely skewed with only 53.9% of 1106 chromosomes present with more than one estimated copy. Haplotypes of Native American origin were identified. These data form an initial basis for determining the requirements for an adequate donor pool for stem cell transplantation in this population.
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