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Zhan Z, Ma W, Chen D, Liang X. FRI0330 Subclinical impairment of ovarian reserve in systemic lupus erythematosus patients with normal menstruation. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.1457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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202
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Li X, Miao W, Gong C, Jiang H, Ma W, Zhu S. Effects of prometryn and acetochlor on arbuscular mycorrhizal fungi and symbiotic system. Lett Appl Microbiol 2013; 57:122-8. [PMID: 23593967 DOI: 10.1111/lam.12084] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2013] [Revised: 04/10/2013] [Accepted: 04/11/2013] [Indexed: 11/29/2022]
Abstract
UNLABELLED Prometryn and acetochlor are common herbicides widely used to control weeds in agricultural systems. The impacts of the two herbicides on spore germination, hyphal elongation, the biomass and malondialdehyde content of carrot hairy roots were investigated using a strict in vitro cultivation system associating the Ri T-DNA-transferred carrot hairy roots with Glomus etunicatum. Alternatively, root colonization, daughter spore production and the proportion of hyphae with succinate dehydrogenase (SDH) and alkaline phosphatase (ALP) activities were also investigated. No significant impact on spore germination was noted in the presence of acetochlor at all three concentrations tested, while a significant decrease was observed with prometryn only at the highest concentration. Moreover, an inverse correlation was identified between herbicides concentrations and G. etunicatum root colonization and spore production as well as hyphal SDH and ALP activity, with a positive correlation identified among these four factors. Both herbicides exerted negative effects on the arbuscular mycorrhizal (AM) fungus and symbiosis at increasing concentrations, with prometryn apparently more toxic than acetochlor. Furthermore, the AM symbiotic system was shown to improve biomass, reduce malondialdehyde accumulation and ease lipid peroxidation in carrot hairy roots and decrease damage in host plants, thus enhancing plant tolerance to adverse conditions. SIGNIFICANCE AND IMPACT OF THE STUDY In this study, the effect of prometryn and acetochlor on the physiology and metabolic activities of the AM fungus Glomus etunicatum were investigated. Our findings demonstrate for the first time, the impact of the two herbicides at three concentrations (0.1, 1 and 10 mg l(-1)) on transformed carrot hairy roots/AM fungus association under strict in vitro culture conditions, which may guide the application of the two herbicides in modern agriculture.
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Affiliation(s)
- X Li
- Key Laboratory of Crop Biology of Anhui Province, School of Life Science, Anhui Agricultural University, Hefei, China
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203
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Fan D, Ma W, Wang L, Huang J, Zhang F, Zhao J, Zhang H, Chen W. Determining the effects of microwave heating on the ordered structures of rice starch by NMR. Carbohydr Polym 2013; 92:1395-401. [DOI: 10.1016/j.carbpol.2012.09.072] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2012] [Revised: 09/26/2012] [Accepted: 09/26/2012] [Indexed: 11/29/2022]
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Fan D, Wang L, Ma S, Ma W, Liu X, Huang J, Zhao J, Zhang H, Chen W. Structural variation of rice starch in response to temperature during microwave heating before gelatinisation. Carbohydr Polym 2013; 92:1249-55. [DOI: 10.1016/j.carbpol.2012.10.053] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2012] [Revised: 10/18/2012] [Accepted: 10/22/2012] [Indexed: 11/30/2022]
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205
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Wen W, Peng C, Kim MO, Ho Jeong C, Zhu F, Yao K, Zykova T, Ma W, Carper A, Langfald A, Bode AM, Dong Z. Knockdown of RNF2 induces apoptosis by regulating MDM2 and p53 stability. Oncogene 2013; 33:421-8. [PMID: 23318437 PMCID: PMC3920452 DOI: 10.1038/onc.2012.605] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2012] [Revised: 10/04/2012] [Accepted: 11/02/2012] [Indexed: 11/26/2022]
Abstract
RNF2, also known as Ring1B/Ring2, is a component of the polycomb repression complex 1 (PRC1). RNF2 is highly expressed in many tumors, suggesting that it might have an oncogenic function, but the mechanism is unknown. Here we show that knockdown of RNF2 significantly inhibits both cell proliferation and colony formation in soft agar, and induces apoptosis in cancer cells. Knockdown of RNF2 in HCT116 p53+/+ cells resulted in significantly more apoptosis than was observed in RNF2 knockdown HCT116 p53−/− cells, indicating that RNF2 knockdown-induced apoptosis is partially dependent on p53. Various p53-targeted genes were increased in RNF2 knockdown cells. Further studies revealed that in RNF2 knockdown cells, the p53 protein level was increased, the half-life of p53 was prolonged and p53 ubiquitination was decreased. In contrast, cells overexpressing RNF2 showed a decreased p53 protein level, a shorter p53 half-life and increased p53 ubiquitination. Importantly, we found that RNF2 directly binds with both p53 and MDM2 and promotes MDM2-mediated p53 ubiquitination. RNF2 overexpression could also increase the half-life of MDM2 and inhibit its ubiquitination. The regulation on p53 and MDM2 stability by RNF2 was also observed during the etoposide-induced DNA damage response. These results provide a possible mechanism explaining the oncogenic function of RNF2, and because RNF2 is important for cancer cell survival and proliferation, it might be an ideal target for cancer therapy or prevention.
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Affiliation(s)
- W Wen
- 1] The Hormel Institute, University of Minnesota, Austin, MN, USA [2] State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, Xïan, China
| | - C Peng
- The Hormel Institute, University of Minnesota, Austin, MN, USA
| | - M O Kim
- 1] The Hormel Institute, University of Minnesota, Austin, MN, USA [2] Center for Laboratory Animal Resources, KyungPook National University, Daegu, Republic of Korea
| | - C Ho Jeong
- The Hormel Institute, University of Minnesota, Austin, MN, USA
| | - F Zhu
- The Hormel Institute, University of Minnesota, Austin, MN, USA
| | - K Yao
- The Hormel Institute, University of Minnesota, Austin, MN, USA
| | - T Zykova
- The Hormel Institute, University of Minnesota, Austin, MN, USA
| | - W Ma
- The Hormel Institute, University of Minnesota, Austin, MN, USA
| | - A Carper
- The Hormel Institute, University of Minnesota, Austin, MN, USA
| | - A Langfald
- The Hormel Institute, University of Minnesota, Austin, MN, USA
| | - A M Bode
- The Hormel Institute, University of Minnesota, Austin, MN, USA
| | - Z Dong
- The Hormel Institute, University of Minnesota, Austin, MN, USA
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Cheng Y, Wang K, Ma W, Wang J. Tumor-Stroma Ratio Is an Independent Predictor for Survival in Esophageal Squamous Cell Carcinoma. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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207
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Ma W, Weekes C, Pawaskar D, Fetterly G, Messersmith W, Dy G, Straubinger R, Jusko W, Eckhardt S, Adjei A. 584 Preclinical and Clinical Evaluation of the Combination of Sorafenib and Everolimus in Patients with Advanced Solid Tumors. Eur J Cancer 2012. [DOI: 10.1016/s0959-8049(12)72381-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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208
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Abstract
Ascorbic acid (vitamin C) has been reported as an anti-cancer agent. Previous in vitro studies using either primary cell cultures from cancer patients or tumor cell lines have indicated that different kinds of tumor cells may have different sensitivities to ascorbic acid for the inhibition of tumorigeneity or growth. Because the JB6 mouse epidermal cell system has been used extensively as an in vitro model for the study of tumor promotion and progression, we assessed the effects of ascorbic acid on transformation in JB6 cell variants. The results show that ascorbic acid could inhibit 5.5% to 97.1% of transformation of JB6 P+ cell Cl 41-19 induced by TPA, EGF or EGF + insulin, but has no effect on anchorage-independent growth of JB6 transformed cell A33. Since our previous results indicated that induced AP-1 activity is required for tumor promoter induced-transformation, we tested whether inhibition of tumor promoter-induced transformation by ascorbic acid is through an AP-1 inhibition mechanism. Our results indicated that ascorbic acid inhibited AP-I activity at the same dose range for inhibition of transformation. These results demonstrated that ascorbic acid has inhibitory effects on JB6 cell tumor promoter-induced transformation, but no influence on tumor cell phenotype expression and provided the basic knowledge for understanding of vitamin C action on tumor prevention.
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Affiliation(s)
- C Huang
- UNIV MINNESOTA,HORMEL INST,AUSTIN,MN 55912
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209
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Ma W, Vacca-Galloway LL. Spiny interneurons identified in the normal mouse spinal cord show alterations in the Wobbler mouse: a model for inherited motoneuron disease. Restor Neurol Neurosci 2012; 4:381-92. [PMID: 21551672 DOI: 10.3233/rnn-1992-4603] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Presumed interneurons are described in the Golgi-impregnated cervical spinal cord taken from normal phenotype and motoneuron-diseased mice of the Wobbler mouse strain (NFR/wr), as well as from the spinal cord of two related normal mouse strains (C57B1/6N and NFR/N). The interneurons, distributed throughout Rexed's laminae V-VIII, are characterized by numerous spines clustered along the distal dendrites. Quantitatively, the soma size (μm2) of the interneurons in the Wobbler specimens studied late in the motoneuron disease is smaller than that measured in the pair-matched (3-week-old) normal phenotype littermates. Early in the disease, the spine density (number of spines per 100 μm length dendrite) is greater compared with the normal phenotype littermates, perhaps implying that sprouting may occur. At a later stage in the disease process, the spine density does not differ significantly. However the increase in the spine density expected with advancing age is not observed for the Wobbler interneurons. It is proposed that perhaps the normal age-related proliferation of spines is impaired in the Wobbler mice. Since the measurements for spine length are lower in the Wobbler interneurons studied late in the motoneuron disease compared with the pair-matched (3-month-old) normal phenotype littermates, the normal age-related lengthening of the spines seems to be lacking. In addition, the spine length measured in the normal phenotype littermates is significantly greater compared with the normal mice (NFR/N, C57B1/6N). Thus the growth patterns of the spines may differ in the Wobbler mouse strain compared with the normal (C57B1/6N, NFR/N) mouse strains. It is proposed that the Wobbler motoneuron disease affects interneurons as well as motoneurons.
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Affiliation(s)
- W Ma
- Department of Anatomy, Tongji Medical University, Wuhan, 430030 (China)
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210
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Gao Z, Guo X, Duan C, Ma W, Xu P, Wang W, Chen J. Altered Aggrecan Synthesis and Collagen Expression Profiles in Chondrocytes from Patients with Kashin—Beck Disease and Osteoarthritis. J Int Med Res 2012; 40:1325-34. [DOI: 10.1177/147323001204000411] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
OBJECTIVES: To investigate cell morphology, aggrecan expression, and type I, II, III and X collagen expression in chondrocytes from adults with Kashin—Beck disease or osteoarthritis (OA). METHODS: Samples of knee articular cartilage were taken during surgery; cartilage samples obtained from fresh cadavers without arthritic disease were used as controls. Samples were digested with collagenase; isolated chondrocytes were cultured in monolayers. Aggrecan was detected by toluidine blue staining; collagen and aggrecan protein levels were evaluated by immuno cytochemistry and immunofluorescence staining. RESULTS: Samples were obtained from six participants per group. Aggrecan and type II collagen levels in chondrocytes from patients were significantly lower than those from controls, but levels of type I, III and X collagen were enhanced in patients compared with controls. Production of type III and X collagen was higher in chondrocytes from patients with Kashin—Beck disease than in those from OA patients. CONCLUSIONS: Biochemical and morphological mechanisms underlying Kashin—Beck disease and OA include enhanced dedifferentiation and hypertrophy of chondrocytes, increased type I, III and X collagen levels, and suppressed type II collagen and aggrecan production compared with control samples.
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Affiliation(s)
- Zq Gao
- Department of Orthopaedic Surgery, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shanxi Province, China
| | - X Guo
- Institute of Endemic Diseases, Faculty of Public Health, College of Medicine, Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education (Key Laboratory of Microelement and Endemic Disease), Xi'an Jiaotong University, Xi'an, Shanxi Province, China
| | - C Duan
- Institute of Endemic Diseases, Faculty of Public Health, College of Medicine, Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education (Key Laboratory of Microelement and Endemic Disease), Xi'an Jiaotong University, Xi'an, Shanxi Province, China
| | - W Ma
- Institute of Endemic Diseases, Faculty of Public Health, College of Medicine, Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education (Key Laboratory of Microelement and Endemic Disease), Xi'an Jiaotong University, Xi'an, Shanxi Province, China
| | - P Xu
- Xi'an Red Cross Hospital, Xi'an, Shanxi Province, China
| | - W Wang
- Department of Orthopaedic Surgery, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shanxi Province, China
| | - Jc Chen
- Department of Orthopaedic Surgery, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shanxi Province, China
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211
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Zhang W, Guo T, Zhang H, Ma W. P02.152. Is electro-acupuncture beneficial for overall quality of life improvement of undergraduates in depressive states? A pragmatic controlled trial. Altern Ther Health Med 2012. [PMCID: PMC3373338 DOI: 10.1186/1472-6882-12-s1-p208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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212
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Fan D, Ma W, Wang L, Huang J, Zhao J, Zhang H, Chen W. Determination of structural changes in microwaved rice starch using Fourier transform infrared and Raman spectroscopy. STARCH-STARKE 2012. [DOI: 10.1002/star.201100200] [Citation(s) in RCA: 83] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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213
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Humble N, Allinger K, Assmann W, Bin J, Dollinger G, Drexler G, Friedl A, Hilz P, Kiefer D, Ma W, Michalski D, Molls M, Reinhardt S, Schmid T, Zlobinskaya O, Schreiber J, Wilkens J. 83 SINGLE SHOT HIGH DOSE CELL IRRADIATIONS WITH LASER-DRIVEN PROTONS. Radiother Oncol 2012. [DOI: 10.1016/s0167-8140(12)70060-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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214
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Wang K, An XL, Pan LP, Dong K, Gao LY, Wang SL, Xie ZZ, Zhang Z, Appels R, Ma W, Yan YM. Molecular characterization of HMW-GS 1Dx3(t) and 1Dx4(t) genes from Aegilops tauschii and their potential value for wheat quality improvement. Hereditas 2012; 149:41-9. [PMID: 22458440 DOI: 10.1111/j.1601-5223.2011.02215.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
Two x-type high molecular weight glutenin subunits (HMW-GS) in Aegilops tauschii, 1Dx3(t) and 1Dx4(t) were identified by SDS-PAGE and MALDI-TOF-MS. Their complete coding sequences were isolated by AS-PCR. 1Dx3(t) and 1Dx4(t) genes consist of 2535 bp and 2508 bp and encode 845 and 836 amino acid residues, respectively. The deduced molecular masses of 1Dx3(t) and 1Dx4(t) gene products are 87655.26 Da and 86664.24 Da, respectively, well corresponding to the molecular masses measured by MALDI-TOF-MS. A total of 18 SNPs were identified between 1Dx3(t) and 1Dx4(t). Comparing with 1Dx5 subunit, 1Dx3(t) had a six amino acid insertion at 146-151 while the 1Dx4(t) had a nine amino acid deletion when compared with 1Dx3(t) subunit. The authenticity of the cloned 1Dx3(t) and 1Dx4(t) genes were confirmed by successful expression of their ORFs in E. coli. Comparison and phylogenetic tree based on the amino acid and nucleotide sequences confirmed that 1Dx3(t) was most closely related to 1Dx5 subunit that is widely accepted as a superior subunit for bread-making property. The secondary structure prediction demonstrated that 1Dx3(t) subunit has significantly high α-helix and β-strand contents, suggesting it might have positive effects on dough quality.
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Affiliation(s)
- K Wang
- Key Laboratory of Genetics and Biotechnology, College of Life Science, Capital Normal University, Beijing, PR China
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215
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216
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Ma W. Investigation of formation mechanisms of chips in orthogonal cutting process. EPJ Web of Conferences 2012. [DOI: 10.1051/epjconf/20122604008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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217
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Fan D, Li C, Ma W, Zhao J, Zhang H, Chen W. A study of the power absorption and temperature distribution during microwave reheating of instant rice. Int J Food Sci Technol 2011. [DOI: 10.1111/j.1365-2621.2011.02888.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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218
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Abstract
DNA vaccination is an attractive approach for eliciting antigen-specific immunity. In this study, we used magnetosomes (bacterial magnetic particles, BMPs) as carriers of a recombinant DNA composed of a secondary lymphoid tissue chemokine, human papillomavirus type E7 (HPV-E7) and Ig-Fc fragment (pSLC-E7-Fc) to generate a gene vaccine (BMP-V) for tumour immunotherapy. The results indicate that BMPs linked to DNA more efficiently in phosphate-buffered saline (pH=4–5) than in physiological saline. Efficient transfection of BMP-V in vitro and in vivo was achieved when a 600-mT static magnetic field was applied for 10 min. In a mouse tumour model, subcutaneous injection of BMP-V (5 μg, × 3 at 4-day intervals) plus magnetic exposure elicited systemic HPV-E7-specific immunity leading to significant tumour inhibition. The treated mice tolerated BMP-V immunisation well with no toxic side effects, as shown by histopathological examinations of major internal organs. Taken together, these results suggest that BMP can be used as a gene carrier to elicit a systemic immune response.
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Affiliation(s)
- Y-S Tang
- Department of Immunology, Cancer Institute and Cancer Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
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219
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Ge P, Ma C, Wang S, Gao L, Li X, Guo G, Ma W, Yan Y. Comparative proteomic analysis of grain development in two spring wheat varieties under drought stress. Anal Bioanal Chem 2011; 402:1297-313. [PMID: 22080421 DOI: 10.1007/s00216-011-5532-z] [Citation(s) in RCA: 114] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2011] [Revised: 10/03/2011] [Accepted: 10/23/2011] [Indexed: 12/24/2022]
Abstract
Two spring wheat varieties Ningchun 4 and Chinese Spring with good and poor resistance to abiotic stress, respectively, were used to investigate proteomic changes in the developing grains under drought stress by a comparative proteomics approach. A total of 152 protein spots showed at least twofold differences in abundance on two-dimensional electrophoresis (2-DE) maps, of which 28 and 68 protein spots were identified by MALDI-TOF and MALDI-TOF/TOF mass spectrometry, respectively. Of the 96 identified protein spots, six different expression patterns were found and they were involved in stress/defense/detoxification, carbohydrate metabolism, photosynthesis, nitrogen metabolism, storage proteins and some other important functions. Comparative proteomic analysis revealed that under the drought conditions the decreased degree of ascorbate peroxidases was more significant in Chinese Spring than in Ningchun 4 during grain development whereas translationally controlled tumor protein, which was significantly upregulated at 14 DAF, was present in Ningchun 4 and absent in Chinese Spring. The Rubisco large subunit displayed an upregulated expression pattern in Ningchun 4. In addition, two drought-tolerant proteins, triosephosphate isomerase and oxygen-evolving complex showed B and F type expression patterns in Chinese Spring, but D and B types in Ningchun 4, respectively. These differentially expressed proteins might be responsible for the stronger drought resistance of Ningchun 4 compared to Chinese Spring.
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Affiliation(s)
- P Ge
- College of Life Sciences, Capital Normal University, Beijing 100048, China
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220
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Wang W, Zhong B, Sun J, Cao J, Tian J, Zhong N, Zhao W, Tian L, Xu P, Guo D, Ju X, Ma W, Li M, Hou W, Lu S. Down-regulated HS6ST2 in osteoarthritis and Kashin-Beck disease inhibits cell viability and influences expression of the genes relevant to aggrecan metabolism of human chondrocytes. Rheumatology (Oxford) 2011; 50:2176-86. [DOI: 10.1093/rheumatology/ker230] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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221
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Landgren O, Ma W, Kyle RA, Rajkumar SV, Korde N, Albitar M. Polymorphism of the erythropoietin gene promotor and the development of myelodysplastic syndromes subsequent to multiple myeloma. Leukemia 2011; 26:844-5. [PMID: 21926963 DOI: 10.1038/leu.2011.262] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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222
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Jin Y, Lin W, Huang S, Zhang C, Pu T, Ma W, Lin D. Dental abnormalities in eight captive giant pandas (Ailuropoda melanoleuca) in China. J Comp Pathol 2011; 146:357-64. [PMID: 21906751 DOI: 10.1016/j.jcpa.2011.08.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2010] [Revised: 07/09/2011] [Accepted: 08/07/2011] [Indexed: 10/17/2022]
Abstract
Dental data from eight adult giant pandas (Ailuropoda melanoleuca) (four females and four males) were collected at the Beijing Zoo from February 2009 to July 2010. Examination findings were recorded in dental charts. All the pandas had different degrees of tooth wear. Incisors, canines and second premolars had the most abnormalities. Five animals had caries; molars were the most affected. Chip fractures were found in seven teeth (incisor, canine and premolar) of five pandas; two had complicated fractures of their canines. Premolars and other teeth were missing in three pandas. Different degrees of dental plaque and calculus were found in all animals. Two pandas had mild gingivitis; the depth of periodontal pockets in all pandas was normal (0-2 mm). Five pandas had abnormal tooth mobility. Samples of dental plaque were collected for microbial culture. Two hundred and fifty-three bacterial strains belonging to 48 species of 23 genera were isolated. Streptococcus, Moraxella, Peptostreptococcus and Porphyromonas were the dominant genera. Further research with larger sample sizes of free-ranging and captive giant pandas will be required in order to demonstrate the absence of the premolar tooth, tooth fractures and the relatively low prevalence of periodontal disease in captive giant pandas.
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Affiliation(s)
- Y Jin
- The Clinical Department, College of Veterinary Medicine, China Agricultural University, Beijing 100193, People's Republic of China
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223
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Ma W, Lin Y, Xuan W, Iversen PL, Smith LJ, Benchimol S. Inhibition of p53 expression by peptide-conjugated phosphorodiamidate morpholino oligomers sensitizes human cancer cells to chemotherapeutic drugs. Oncogene 2011; 31:1024-33. [PMID: 21765469 DOI: 10.1038/onc.2011.300] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The p53 tumor suppressor gene encodes a transcription factor that is commonly mutated in cancer. Tumors arise when premalignant cells are unable to undergo p53-dependent apoptosis, cell cycle arrest or DNA repair. The p53-signaling pathway affects not only tumor development, but also the response of tumors to chemotherapeutic drugs. In this study, we use cell penetrating peptide conjugates of phosphorodiamidate morpholino oligomers (PPMOs) to inhibit p53 expression. We examine the functional properties of endogenous p53 isoforms that are produced upon PPMO-mediated inhibition of p53 translation and splicing, and report that loss of N-terminal or C-terminal sequences interferes with the transcriptional activity of p53. Importantly, we report that PPMO-mediated inhibition of p53 expression sensitizes human cancer cells with wild-type p53 to chemotherapeutic drugs.
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Affiliation(s)
- W Ma
- Department of Biology, York University, 4700 Keele St., Toronto, Ontario, Canada
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224
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Gao L, Yan X, Li X, Guo G, Hu Y, Ma W, Yan Y. Proteome analysis of wheat leaf under salt stress by two-dimensional difference gel electrophoresis (2D-DIGE). Phytochemistry 2011; 72:1180-1191. [PMID: 21257186 DOI: 10.1016/j.phytochem.2010.12.008] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2010] [Revised: 11/15/2010] [Accepted: 12/06/2010] [Indexed: 05/30/2023]
Abstract
Salt stress is a major abiotic stress that limits agricultural productivity in many regions of the world. To understand the molecular basis of the salt stress response in wheat (Triticum aestivum L.), a proteomic approach was used to identify the salt stress-responsive proteins in an elite Chinese wheat cultivar, Zhengmai 9023, which exhibits a high yield, superior gluten quality and better biotic resistance. Three-week-old seedlings were treated with NaCl of four different concentrations (1.0%, 1.5%, 2.0%, and 2.5%). The total proteins from the leaves of untreated and NaCl-treated plants were extracted and separated by two-dimensional difference gel electrophoresis (2D-DIGE). A total of 2358 protein spots were detected on the gels, among which 125 spots showed a significant change in protein abundance, and 83 differentially expressed spots were localised on preparative gels. Using Q-TOF mass spectrometry, 52 salt-responsive spots were identified, which were classified into six functional categories that included transport-associated proteins, detoxifying enzymes, ATP synthase, carbon metabolism, protein folding, and proteins with unknown biological functions. Of the 52 differentially expressed proteins, 26 were up-regulated, 21 were down-regulated, and five spots showed multi-expression patterns. In particular, some important proteins for salt tolerance were found to be up-regulated in Zhengmai 9023 under salt stress, such as H(+)-ATPases, glutathione S-transferase, ferritin and triosephosphate isomerase.
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Affiliation(s)
- L Gao
- College of Life Sciences, Capital Normal University, 100048 Beijing, China
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Wang F, Sims JT, Ma L, Ma W, Dou Z, Zhang F. The phosphorus footprint of China's food chain: implications for food security, natural resource management, and environmental quality. J Environ Qual 2011; 40:1081-9. [PMID: 21712576 DOI: 10.2134/jeq2010.0444] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Efficient use of phosphorus (P) for producing food, preventing water pollution, and managing a dwindling rock P reserve are major challenges for China. We analyzed P stocks and flows in the Chinese food chain to identify where P use efficiency can be improved, where P leaks to the environment, and the research, technologies, and policies needed to improve P use. We found a high degree of inefficiency; of 6652 Gg P entering the food chain, only 1102 Gg P (18%) exit as food for humans. The greatest inefficiencies were a large build-up of soil P (3670 Gg P yr; 52% of P inputs) and high P losses to the environment from animal production (1582 Gg P yr; 60% of excreted P). Improving P use in China must focus on national-scale nutrient management strategies, better animal nutrition, and adoption of technologies and policies to reduce P discharges from the animal sector and recycle P as manures in agriculture.
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Affiliation(s)
- F Wang
- China Agricultural University, Beijing, China
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Ma W, Xie D, Chen D, Yang Q, Jiang Z, Zhang Y, Zhou S. Preliminary in vitro study of MUC1-ETR/pDC316 vector-mediated specific MR imaging of pancreatic cancer. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.e14517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Grisham RN, Adaniel CH, Hyman DM, Ma W, Iasonos A, Aghajanian C, Konner JA. Gemcitabine for advanced endometrial carcinoma (EMC): A review of the MSKCC experience. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.5098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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228
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Abstract
The ecology of influenza A viruses is very complicated involving multiple host species and viral genes. Avian species have variable susceptibility to influenza A viruses with wild aquatic birds being the reservoir for this group of pathogens. Occasionally, influenza A viruses are transmitted to mammals from avian species, which can lead to the development of human pandemic strains by direct or indirect transmission to man. Because swine are also susceptible to infection with avian and human influenza viruses, genetic reassortment between these viruses and/or swine influenza viruses can occur. The potential to generate novel influenza viruses has resulted in swine being labelled 'mixing vessels'. The mixing vessel theory is one mechanism by which unique viruses can be transmitted from an avian reservoir to man. Although swine can generate novel influenza viruses capable of infecting man, at present, it is difficult to predict which viruses, if any, will cause a human pandemic. Clearly, the ecology of influenza A viruses is dynamic and can impact human health, companion animals, as well as the health of livestock and poultry for production of valuable protein commodities. For these reasons, influenza is, and will continue to be, a serious threat to the wellbeing of mankind.
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Affiliation(s)
- W Ma
- Department of Diagnostic Medicine/Pathobiology, College of Veterinary Medicine, Kansas State University, Manhattan, USA
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Sun DM, Hu WN, Ma W. Simultaneous electrochemical detection of uric acid and ascorbic acid at a silver doped poly(glutamic acid) modified glassy carbon electrode. J Anal Chem 2011. [DOI: 10.1134/s1061934811030063] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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230
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Ma W, Liu J, Zeng Y, Chen S, Zheng Y, Ye S, Lan L, Liu Q, Weig HJ, Liu Q. Causes of moderate to large pericardial effusion requiring pericardiocentesis in 140 Han Chinese patients. Herz 2011; 37:183-7. [PMID: 21301790 DOI: 10.1007/s00059-011-3428-5] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2010] [Revised: 11/15/2010] [Accepted: 01/11/2011] [Indexed: 11/27/2022]
Abstract
BACKGROUND Causes of pericardial effusion requiring pericardiocentesis are very complex; a summary of 140 patients, especially those having iatrogenic pericardial effusion, is rare. METHODS We prospectively analyzed the clinical data and etiology of moderate to large pericardial effusion requiring pericardiocentesis and drainage in 140 consecutive Han Chinese patients from January 2007 to December 2009. RESULTS Pericardiocentesis was successfully performed and effective in all patients. There were 9 cases with transudates, while the remaining 131 cases were diagnosed with exudates (neoplastic in 54 patients, tuberculous in 40 patients, 9 cases of connective tissue diseases, 12 cases undergoing cardiac catheterization, and 8 cases of acute myocardial infarction). Among the 54 malignancies, 30 patients had lung cancer, 7 had breast cancer, and 4 had liver cancer. No differences in the clinical characteristics and the results of routine and biochemistry studies in the pericardial fluid between tuberculous and malignant groups were found. Of the 12 patients undergoing cardiac catheterization, 6 cases had undergone catheter ablation for tachycardia and 4 cases had undergone percutaneous coronary intervention. The 6 patients undergoing catheter ablation were women and the ratio of pericardial effusion was higher in women (6/436) than in men (0/462; p<0.05). Pericardiocentesis and drainage was effective in the 6 patients who underwent catheter ablation, and the remaining 6 patients underwent surgical intervention after pericardiocentesis and drainage. All 8 patients with acute myocardial infarction died during hospitalization. CONCLUSION In China, most moderate to large pericardial effusions requiring pericardiocentesis and drainage were exudates and bloody, which were mainly caused by malignancy and tuberculosis. However, the incidence of iatrogenic pericardial effusion has been increasing and should not be ignored. Pericardiocentesis and drainage were effective.
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Affiliation(s)
- W Ma
- Department of Internal Cardiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Jiefang Avenue #1095, Wuhan, China
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He S, Li T, Chen H, Ma W, Yao Q, Yang H, Wang H, Wang F, Zhao C, Yang P. CD14+ cell-derived IL-29 modulates proinflammatory cytokine production in patients with allergic airway inflammation. Allergy 2011; 66:238-46. [PMID: 20726961 DOI: 10.1111/j.1398-9995.2010.02455.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
BACKGROUND Interleukin (IL)-29 is a newly described cytokine that has anti-viral activity, induces tumor cell death and regulates immune function. Whether it plays a role in immune disorders is unclear. This study aims to examine the role of IL-29 in the modulation of immune response under allergic environment. METHODS A group of patients with allergic asthma or/and allergic rhinitis was recruited to this study. Serum samples were collected from the patients in both in-season and out-season; the serum levels of IL-29 were determined by enzyme-linked immunoassay. Cell types of IL-29-producing cells in upper airway mucosa were identified with immune staining and examined by immunohistochemistry and flow cytometry. RESULTS High serum levels of IL-29 were detected in patients with allergic asthma in in-season, but not in out-season. The majority of IL-29(+) cells in upper airway tissue were CD14(+) cells. Exposure to specific antigens triggered the release of IL-4 from antigen-specific CD4(+) T cells; the released IL-4 activated CD14(+) cells to release IL-29; the released IL-29 further triggered the release of IL-6 and tumor necrosis factor from CD4(+) T cells. CONCLUSIONS Interleukin-29 is involved in the pathogenesis of allergic inflammation via modulating immune cells' function to release proinflammatory cytokines.
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Affiliation(s)
- S He
- Clinical Research Center, the First Affiliated Hospital of Nanjing Medical University, Nanjing, China.
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232
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Ma W, Giles F, Zhang X, Wang X, Zhang Z, Lee TS, Yeh CH, Albitar M. Three novel alternative splicing mutations in BCR-ABL1 detected in CML patients with resistance to kinase inhibitors. Int J Lab Hematol 2011; 33:326-31. [PMID: 21266020 DOI: 10.1111/j.1751-553x.2010.01291.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
INTRODUCTION Multiple types of mutations in the BCR-ABL1 kinase domain have been reported. We previously reported a common alternatively spliced BCR-ABL mRNA with a 35-nucleotide insertion (35INS). We report three novel alternative splicing mutants expressed as the dominant transcripts in patient with chronic myelogenous leukemia and resistance to kinase inhibitors. METHODS We screened RNA from more than 200 patients with resistance to more than one of the three kinase inhibitors for ABL1 kinase domain mutations by direct sequencing. RESULTS We found three not previously described splice mutants. All three showed >90% mutant transcript. The first resulted from the insertion of 79 nucleotides into the ABL1 exon 8-9 junction. The inserted sequence contained a sequence from regions of intron 8, located 120 bp apart: the 35-nucleotide sequence previously described, and an additional 44-nucleotide segment downstream from 35INS. The combined 79-nucleotide insertion splice mutant showed the same protein change as 35INS (p C475YfsX11). The second splice mutation comprised an 84-nucleotide sequence from intron 7 inserted into the ABL1 exon7-8 junction, also causing a frameshift and protein truncation (p A424EfsX18). The third splice derived from a 231-nucleotide sequence from intron 4 retained in the ABL1 exon 4-5 junction adding 40 intron-encoded amino acids and leading to a frameshift and early termination (p E275LfsX41). CONCLUSION These findings, when combined with the data on 35INS, support the concept that loss of the C-terminus of BCR-ABL1 is associated with significant resistance to kinase inhibitors; this mechanism appears to be a major source of resistance to kinase inhibitors.
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Affiliation(s)
- W Ma
- Department of Hematology/Oncology, Quest Diagnostics Nichols Institute, San Juan Capistrano, CA 92675, USA
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Thirolf P, Habs D, Gross M, Allinger K, Bin J, Henig A, Kiefer D, Ma W, Schreiber J. Laser Ion Acceleration: Status and Perspectives for Fusion. EPJ Web of Conferences 2011. [DOI: 10.1051/epjconf/20111711001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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234
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MacDonald R, Debiais‐Thibaud M, Ma W, Yu M, Talbot J, Ekker M. [P1.37]: Function and regulation of
Dlx
homeobox genes during zebrafish GABAergic interneuron development. Int J Dev Neurosci 2010. [DOI: 10.1016/j.ijdevneu.2010.07.078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Affiliation(s)
| | | | - W. Ma
- University of OttawaCanada
| | - M. Yu
- University of OttawaCanada
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235
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Malik N, Chandrasekhar R, Salerno May K, Ma W, Flaherty L, Iyer R, Kuvshinoff B, Gibbs J, Wilding G, Yang G. Chemoradiotherapy vs. Chemotherapy Alone in Patients with Locally Advanced Unresectable Pancreatic Carcinoma: A 10-year Experience. Int J Radiat Oncol Biol Phys 2010. [DOI: 10.1016/j.ijrobp.2010.07.739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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236
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Yang G, Malik N, Chandrasekhar R, Salerno May K, Watroba N, Flaherty L, Ma W, Kuvshinoff B, Wilding G, Gibbs J. Change in CA 19-9 Levels after Chemoradiotherapy Predicts Survival in Patients with Locally Advanced Unresectable Pancreatic Cancer. Int J Radiat Oncol Biol Phys 2010. [DOI: 10.1016/j.ijrobp.2010.07.709] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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237
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Wang MJ, Zhang Y, Lin ZS, Ye XG, Yuan YP, Ma W, Xin ZY. Development of EST-PCR markers for Thinopyrum intermedium chromosome 2Ai#2 and their application in characterization of novel wheat-grass recombinants. Theor Appl Genet 2010; 121:1369-1380. [PMID: 20585749 DOI: 10.1007/s00122-010-1394-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2010] [Accepted: 06/14/2010] [Indexed: 05/29/2023]
Abstract
A series of expressed sequence tags-derived polymerase chain reaction (EST-PCR) markers specific to chromosome 2Ai#2 from Thinopyrum intermedium were developed in this study using a new integrative approach. The target alien chromosome confers high resistance to barley yellow dwarf virus (BYDV), which is a severe virus disease in wheat. To generate markers evenly distributed on 2Ai#2, a total of 105 primer pairs were designed based on mapped ESTs from 8 bins of wheat chromosome 2B with intron-prediction by aligning ESTs with genomic sequences of the new model plant Brachypodium distachyon. Eight and seven polymorphic markers on the short arm and the long arm of chromosome 2Ai#2, respectively, were obtained with a polymorphism rate of 14.3%. These chromosome 2Ai#2-specific EST-PCR markers were then used in tracing and exploring the structural variation of the alien chromosome in the population derived from the immature embryo culture of the cross between N452, a 2Ai#2(2D) substitution line, and common wheat CB037. Two centric fusion of translocations involving 2Ai#2 short or long arm with wheat chromosome 2D and some new genetic stocks including telosomes with the alien chromosome short or long arm were identified in the SC(3) generations, which provided basic materials to further study the mechanism of the BYDV resistance. BYDV tests in two field seasons suggest that the BYDV resistance was mainly conferred by the short arm, gene interaction on both arms of the alien chromosome was discussed.
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Affiliation(s)
- M J Wang
- National Key Facility for Crop Gene Resources and Genetic Improvement (NFCRI), Key Laboratory of Crop Genetics and Breeding, Ministry of Agriculture, Chinese Academy of Agricultural Sciences (CAAS), Beijing, People's Republic of China
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Spicer J, Guo Y, Liu H, Hirsch J, Zhao H, Ma W, Holzemer W. Collaborative nursing leadership project in the People's Republic of China. Int Nurs Rev 2010; 57:180-7. [DOI: 10.1111/j.1466-7657.2009.00769.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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239
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Calvo E, Ma W, Tolcher AW, Hidalgo M, Soria J, Bahleda R, Gualberto A, Denis LJ, Millham RD, Adjei AA. Phase (P) I study of PF-00299804 (PF) combined with figitumumab (FI; CP-751,871) in patients (pts) with advanced solid tumors (ASTs). J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.3026] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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240
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Cohen SJ, Zalupski MM, Conkling P, Nugent FW, Ma W, Modiano M, Pascual RA, Lee F, Wong L, Hersh E. A phase II randomized double blind multicenter trial of gemcitabine (Gem) plus imexon (IMX) versus Gem plus placebo (P) in patients with chemotherapy-naïve pancreatic adenocarcinoma (PC). J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.4076] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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241
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Ma W, Mani S, Freas E, Dy GK, Ghalib MH, Messersmith WA, Bellemarre S, Wilhelm F, Adjei AA, Jimeno A. Rational combination of a novel cell cycle inhibitor ON01910.Na with gemcitabine in patients with advanced solid tumors. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.e13515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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242
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Adjei AA, Sosman JA, Dy GK, Ma W, Fetterly GJ, Skupien D, Means JA, Savage R, Chai F, Puzanov I. A phase I dose-escalation trial evaluating ARQ 197 administered in combination with sorafenib in adult patients (pts) with advanced solid tumors. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.3024] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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243
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Abstract
Infectious bronchitis virus (IBV), the causative agent of infectious bronchitis, results in respiratory disease, nephritis, and poor egg production and quality in chicken. Antimicrobial peptides possess potent antimicrobial activities and are regarded as promising therapeutic alternatives in the fight against microorganisms. To assess the in vitro antiviral activity of swine intestine antimicrobial peptides (SIAMP) against IBV, 45 chick embryos were randomly assigned into 3 groups, 15 for each group. Embryos in group 1 were inoculated with IBV. Group 2 was inoculated with SIAMP-IBV intermixture. Group 3 was used as a control and inoculated with sterile PBS. Allantoic fluid was collected for hemagglutination titer assay. In addition, weight gain, mortality, and pathological changes for each group were recorded. The results showed that no distinct pathological changes were found in chick embryos after they were inoculated with SIAMP-IBV intermixture and the mortality was reduced remarkably compared with the IBV-infected group. Weight gain of embryos in the SIAMP-IBV intermixture group was significantly higher than the IBV-infected embryos (P < 0.01), which was also higher than the control group (P < 0.05). Furthermore, the hemagglutination titer in the SIAMP-IBV group was significantly lower than that in the IBV-infected group (P < 0.01). These results indicated that SIAMP can inhibit virus replication and reduce tissue injury caused by IBV.
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Affiliation(s)
- Q Sun
- College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China.
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Louis L, Gemeiner P, Ponomareva I, Bellaiche L, Geneste G, Ma W, Setter N, Dkhil B. Low-symmetry phases in ferroelectric nanowires. Nano Lett 2010; 10:1177-1183. [PMID: 20230042 DOI: 10.1021/nl9034708] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Ferroelectric nanostructures have recently attracted much attention due to the quest of miniaturizing devices and discovering novel phenomena. In particular, studies conducted on two-dimensional and zero-dimensional ferroelectrics have revealed original properties and their dependences on mechanical and electrical boundary conditions. Meanwhile, researches aimed at discovering and understanding properties of one-dimensional ferroelectric nanostructures are scarce. The determination of the structural phase and of the direction of the polarization in one-dimensional ferroelectrics is of technological importance, since, e.g., a low-symmetry phase in which the polarization lies away from a highly symmetric direction typically generates phenomenal dielectric and electromechanical responses. Here, we investigate the phase transition sequence of nanowires made of KNbO(3) and BaTiO(3) perovskites, by combining X-ray diffraction, Raman spectroscopy, and first-principles-based calculations. We provide evidence of a previously unreported ferroelectric ground state of monoclinic symmetry and the tuning of the polarization's direction by varying factors inherent to the nanoscale.
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Affiliation(s)
- L Louis
- Laboratoire Structures, Propriétés et Modélisation des Solides, CNRS-UMR8580, Ecole Centrale Paris, Grande voie des vignes, Châtenay-Malabry, France
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Wang R, Ma W, Tian L, Sun L, Chang Q. Valve-Sparing Operation for Aortic Root Aneurysm in Patients with Marfan Syndrome. Thorac Cardiovasc Surg 2010; 58:76-80. [DOI: 10.1055/s-0029-1186277] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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246
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Ma W, Kantarjian H, Zhang X, Yeh CH, Zhang ZJ, Verstovsek S, O'Brien S, Giles F, Albitar M. Plasma levels of JAK2 mRNA in patients with chronic myeloproliferative diseases with and without V617F mutation: implications for prognosis and disease biology. Int J Lab Hematol 2010; 32:95-102. [PMID: 19254349 DOI: 10.1111/j.1751-553x.2009.01140.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The association of V617F JAK2 expression levels with disease behavior has not been studied in patients with nonchronic myelogenous leukemia (CML) myeloproliferative disease (MPD). We found plasma levels of total JAK2 mRNA to be higher in patients with non-CML MPD (n=175) than in CML patients (n=45) and normal controls (n=58) (each P<0.001). Overall survival was studied in 68 patients and showed positive correlation with levels of total and mutant JAK2 mRNA in patients with the V617F mutation, but not those without the mutation. These findings suggest that total JAK2 expression levels play a role in the biology of the disease in V617F-positive patients, and a therapy aiming at downmodulating the expression of the total JAK2 mRNA should be considered. In conclusion, we studied JAK2 total and V6217F mutant mRNA levels in plasma. We show high levels of JAK2 expression in MPD patients and these levels correlate with survival.
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Affiliation(s)
- W Ma
- Haematopathology Department, Quest Diagnostics Nichols Institute, San Juan Capistrano, CA 92675, USA
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247
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Ma W, Li X, Dennehy TJ, Lei C, Wang M, Degain BA, Nichols RL. Pyriproxyfen resistance of Bemisia tabaci (Homoptera: Aleyrodidae) biotype B: metabolic mechanism. J Econ Entomol 2010; 103:158-165. [PMID: 20214381 DOI: 10.1603/ec09122] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Juvenile hormone (JH) analog insecticides are relatively nontoxic to vertebrates and provide efficient control of key arthropod pests. One JH analog, pyriproxyfen, has provided over a decade of exceptional management of whiteflies in cotton of the southwestern United States. Thwarting resistance to pyriproxyfen in Bemisia tabaci (Gannadius) (a.k.a. Bemisia argentifolii Bellows and Perring) has been the focus of an integrated resistance management program because this insecticide was first registered for use in Arizona cotton in 1996. Resistance levels have increased slowly in field populations in recent years but have not demonstrably affected field performance of pyriproxyfen. Resistant strains have been isolated and studied in the laboratory to determine the mechanism of resistance and identify optimal strategies for controlling resistant whiteflies. Synergism bioassays showed that resistance in a laboratory-selected strain QC02-R, was partially suppressible with piperonyl butoxid (PBO) and diethyl maleate (DEM) but not with S, S, S-tributyl phosphorotrithioate (DEF). Consistent with the synergism bioassay results, enzymatic assays revealed that the enzyme activities of cytochrome P450 monooxygenases (P450) and glutathione S-transferases (GST) but not esterases were significantly higher in the pyriproxyfen-resistant QC02-R strain than in the susceptible strain. These results indicate that both P450 and GST are involved in whitefly resistance to pyriproxyfen.
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Affiliation(s)
- W Ma
- Department of Entomology and BIO5 institute, University of Arizona, Tuscon, AZ 85721, USA
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Cohen SB, Ma W, Valova VA, Algie M, Harfoot R, Woolley AG, Robinson PJ, Braithwaite AW. Genotoxic stress-induced nuclear localization of oncoprotein YB-1 in the absence of proteolytic processing. Oncogene 2009; 29:403-10. [PMID: 19838214 DOI: 10.1038/onc.2009.321] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Y-box-binding protein 1 (YB-1) is an oncogenic transcription factor whose overexpression and nuclear localization is associated with tumor progression and drug resistance. Transcriptional activation of YB-1 in response to genotoxic stress is believed to occur in the cytoplasm through sequence-specific endoproteolytic cleavage by the 20S Proteasome, followed by nuclear translocation of cleaved YB-1. To study the proteolysis model, we developed a two-step affinity purification of endogenous YB-1 protein species and characterized the products using mass spectrometry. Whereas full-length YB-1 was readily identified, the smaller protein band thought to be activated YB-1 was identified as hnRNP A1. An antibody specific for YB-1 was generated, which revealed only one YB-1 species, even after genotoxic stress-induced nuclear YB-1 translocation. These findings warrant re-evaluation of the mechanism of YB-1 nuclear translocation and transcriptional activation. The relationship between nuclear YB-1 and tumor progression may also have to re-evaluated in some cases.
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Affiliation(s)
- S B Cohen
- Cell Transformation Unit, Children's Medical Research Institute, Westmead, New South Wales, 2145, Australia
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Iyer R, Khushalani N, Tan W, Litwin A, LeVea C, Hutson A, Tucker C, Ma W, Fakih M, Adjei A. 6603 A phase II study of erlotinib in patients (pts) with advanced pancreatic cancer (APC) who are refractory to gemcitabine (G). EJC Suppl 2009. [DOI: 10.1016/s1359-6349(09)71324-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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Sun W, Zhao G, Song E, Wan F, Liu X, Ma W. The effect of feeding soyabeans with different particle size on the content of conjugated linoleic acid and other fatty acids of longissimus dorsi muscle, backfat and liver of beef cattle. J Anim Feed Sci 2009. [DOI: 10.22358/jafs/66406/2009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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