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Zhang KX, Dong MY, Mei XD, Li YF, Zhang T, She DM, Pan WL, Gao ZL, Ning J. Crystal structure of 1-acetyl-3-(3-chlorophenyl)-5-(4-isopropylphenyl)-4,5-dihydro-(1 H)-pyrazole, C 20H 21ClN 2O. Z KRIST-NEW CRYST ST 2017. [DOI: 10.1515/ncrs-2016-0207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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
Abstract
C20H21ClN2O, monoclinic, P21/n (no. 14), a = 13.3888(15) Å, b = 9.6869(10) Å, c = 13.7238(17) Å, β = 96.445(12)°, V = 1768.7(4) Å3, Z = 4, R
gt(F) = 0.0497, wR
ref(F
2) = 0.1153, T = 180.01(10) K.
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Affiliation(s)
- Kai-Xin Zhang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, P. R. China
| | - Meng-Ya Dong
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, P. R. China
| | - Xiang-Dong Mei
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, P. R. China
| | - Yao-Fa Li
- Plant Protection Institute, Hebei Academy of Agricultural and Forestry Sciences, IPM Center of Hebei Province; and Key Laboratory of Integrated Pest Management on Crops in Northern Region of North China, Ministry of Agriculture, Baoding Hebei 07100, P. R. China
| | - Tao Zhang
- Plant Protection Institute, Hebei Academy of Agricultural and Forestry Sciences, IPM Center of Hebei Province; and Key Laboratory of Integrated Pest Management on Crops in Northern Region of North China, Ministry of Agriculture, Baoding Hebei 07100, P. R. China
| | - Dong-Mei She
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, P. R. China
| | - Wen-Liang Pan
- Plant Protection Institute, Hebei Academy of Agricultural and Forestry Sciences, IPM Center of Hebei Province; and Key Laboratory of Integrated Pest Management on Crops in Northern Region of North China, Ministry of Agriculture, Baoding Hebei 07100, P. R. China
| | - Zhan-Lin Gao
- Plant Protection Institute, Hebei Academy of Agricultural and Forestry Sciences, IPM Center of Hebei Province; and Key Laboratory of Integrated Pest Management on Crops in Northern Region of North China, Ministry of Agriculture, Baoding Hebei 07100, P. R. China
| | - Jun Ning
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, P. R. China
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2
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Dong MY, Mei XD, Li YF, Zhang LX, Pan WL, Gao ZL, Ning J. Crystal structure of ( E)-3-(4- tert-butyl)phenyl)-1-(3-chlorophenyl)prop-2-en-1-one, C 18H 17CIO. Z KRIST-NEW CRYST ST 2016. [DOI: 10.1515/ncrs-2014-9076] [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
Abstract
C18H17ClO, monoclinic, P21/c (No. 14), a = 5.9172(3) Å, b = 7.5758(6) Å, c = 33.1334(16) Å, β = 93.666(5)°, V = 1482.2(16) Å3, Z = 4, R
gt
(F) = 0.0453, wR
ref
(F
2
) = 0.1116, T = 180 K.
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Affiliation(s)
- Meng-Ya Dong
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, P. R. China
| | - Xiang-Dong Mei
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, P. R. China
| | - Yao-Fa Li
- Plant Protection Institute, Hebei Academy of Agricultural and Forestry Sciences, IPM Center of Hebei Province, Key Laboratory of Integrated Pest Management on Crops in Northern Region of North China, Ministry of Agriculture, Baoding Hebei 07100, P. R. China
| | - Lan-Xiang Zhang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, P. R. China
| | - Wen-Liang Pan
- Plant Protection Institute, Hebei Academy of Agricultural and Forestry Sciences, IPM Center of Hebei Province, Key Laboratory of Integrated Pest Management on Crops in Northern Region of North China, Ministry of Agriculture, Baoding Hebei 07100, P. R. China
| | - Zhan-Lin Gao
- Plant Protection Institute, Hebei Academy of Agricultural and Forestry Sciences, IPM Center of Hebei Province, Key Laboratory of Integrated Pest Management on Crops in Northern Region of North China, Ministry of Agriculture, Baoding Hebei 07100, P. R. China
| | - Jun Ning
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, P. R. China
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3
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Wang Y, Liang WC, Pan WL, Law WK, Hu JS, Ip DTM, Waye MMY, Ng TB, Wan DCC. Silibinin, a novel chemokine receptor type 4 antagonist, inhibits chemokine ligand 12-induced migration in breast cancer cells. Phytomedicine 2014; 21:1310-1317. [PMID: 25172795 DOI: 10.1016/j.phymed.2014.06.018] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2014] [Revised: 05/15/2014] [Accepted: 06/27/2014] [Indexed: 06/03/2023]
Abstract
PURPOSE C-X-C chemokine receptor type 4 (CXCR4) signaling has been demonstrated to be involved in cancer invasion and migration; therefore, CXCR4 antagonist can serve as an anti-cancer drug by preventing tumor metastasis. This study aimed to identify the CXCR4 antagonists that could reduce and/or inhibit tumor metastasis from natural products. METHODS AND RESULTS According to the molecular docking screening, we reported here silibinin as a novel CXCR4 antagonist. Biochemical characterization showed that silibinin blocked chemokine ligand 12 (CXCL12)-induced CXCR4 internalization by competitive binding to CXCR4, therefore inhibiting downstream intracellular signaling. In human breast cancer cells MDA-MB-231, which expresses high levels of CXCR4, inhibition of CXCL12-induced chemomigration can be found under silibinin treatment. Overexpression of CXCL12 sensitized MDA-MB-231 cells to the inhibition of silibinin, which was abolished by CXCR4 knockdown. The inhibition of silibinin was also observed in MCF-7/CXCR4 cells rather than MCF-7 cells that express low level of CXCR4. CONCLUSIONS Our work demonstrated that silibinin is a novel CXCR4 antagonist that may have potential therapeutic use for prevention of tumor metastasis.
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Affiliation(s)
- Yan Wang
- School of Biomedical Sciences, The Chinese University of Hong Kong, Hong Kong Special Administrative Region
| | - Wei-Cheng Liang
- School of Biomedical Sciences, The Chinese University of Hong Kong, Hong Kong Special Administrative Region
| | - Wen-Liang Pan
- School of Biomedical Sciences, The Chinese University of Hong Kong, Hong Kong Special Administrative Region
| | - Wai-Kit Law
- School of Biomedical Sciences, The Chinese University of Hong Kong, Hong Kong Special Administrative Region
| | - Jian-Shu Hu
- School of Biomedical Sciences, The Chinese University of Hong Kong, Hong Kong Special Administrative Region
| | - Denis Tsz-Ming Ip
- School of Biomedical Sciences, The Chinese University of Hong Kong, Hong Kong Special Administrative Region
| | - Mary Miu-Yee Waye
- School of Biomedical Sciences, The Chinese University of Hong Kong, Hong Kong Special Administrative Region
| | - Tzi-Bun Ng
- School of Biomedical Sciences, The Chinese University of Hong Kong, Hong Kong Special Administrative Region
| | - David Chi-Cheong Wan
- School of Biomedical Sciences, The Chinese University of Hong Kong, Hong Kong Special Administrative Region.
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4
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Liang YH, Mei XD, Li YF, Pan WL, Ning J. 2-Amino-6-chloro- N-methylbenzamide. Acta Crystallogr Sect E Struct Rep Online 2013; 69:o1642. [PMID: 24454086 PMCID: PMC3884310 DOI: 10.1107/s1600536813027827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2013] [Accepted: 10/10/2013] [Indexed: 12/02/2022]
Abstract
In the title compound, C8H9ClN2O, the dihedral angle between the benzene ring and the methylamide substituent is 68.39 (11)°. In the crystal, molecules are linked by N—H⋯O hydrogen bonds, forming layers parallel to the ab plane.
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5
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Wong JH, Ip DCW, Ng TB, Chan YS, Fang F, Pan WL. A defensin-like peptide from Phaseolus vulgaris cv. 'King Pole Bean'. Food Chem 2012; 135:408-14. [PMID: 22868107 DOI: 10.1016/j.foodchem.2012.04.119] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2011] [Revised: 03/22/2012] [Accepted: 04/23/2012] [Indexed: 11/16/2022]
Abstract
A 5447 Da antifungal peptide with an N-terminal sequence highly homologous to plant defensins was purified from Phaseolus vulgaris cv. 'King Pole Bean' by anion-exchange chromatography on Q Sepharose and FPLC-gel filtration on Superdex 75. The isolated peptide inhibited growth of a number of fungal species, including Mycosphaerella arachidicola, Saccharomyces cerevisiae and Candida albicans, with IC(50) values of 3.9, 4.0 and 8.4 μM, respectively. Using the membrane non-permeable DNA-binding dye SYTOX green, it was found that the peptide increased the cell membrane permeability of M. arachidicola, S. cerevisiae and C. albicans.
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Affiliation(s)
- Jack H Wong
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong.
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6
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Ye XJ, Ng TB, Wu ZJ, Xie LH, Fang EF, Wong JH, Pan WL, Wing SSC, Zhang YB. Protein from red cabbage (Brassica oleracea) seeds with antifungal, antibacterial, and anticancer activities. J Agric Food Chem 2011; 59:10232-10238. [PMID: 21830763 DOI: 10.1021/jf201874j] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
A 30 kDa antifungal protein was purified from red cabbage ( Brassica oleracea ) seeds. It exhibited a molecular mass and N-terminal amino acid sequence disinct from those of previously isolated Brassica antifungal proteins. The protocol used entailed ion exchange chromatography on Q-Sepharose and SP-Sepharose followed by fast protein liquid chromatography on Mono S. The protein hindered mycelial growth in Mycosphaerella arachidicola (with an IC50=5 μM), Setospaeria turcica, and Bipolaris maydis. It also inhibited the yeast Candida albicans with an IC50=96 μM. It exerted its antifungal action by permeabilizing the fungal membrane as evidenced by staining with Sytox green. The antifungal activity was stable from pH 3 to 11 and from 0 to 65 °C. It manifested antibacterial activity against Pseudomonas aeruginosa (IC50=53 μM). Furthermore, after 48 h of culture, it suppressed proliferation of nasopharyngeal cancer and hepatoma cells with IC50=50 and 90 μM, respectively.
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Affiliation(s)
- Xiu-Juan Ye
- Institute of Plant Virology, Fujian Province Key Laboratory of Plant Virology, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, People's Republic of China.
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7
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Lu YY, Chen TS, Qu JL, Pan WL, Sun L, Wei XB. Dihydroartemisinin (DHA) induces caspase-3-dependent apoptosis in human lung adenocarcinoma ASTC-a-1 cells. J Biomed Sci 2009; 16:16. [PMID: 19272183 PMCID: PMC2653522 DOI: 10.1186/1423-0127-16-16] [Citation(s) in RCA: 87] [Impact Index Per Article: 5.8] [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: 07/30/2008] [Accepted: 02/02/2009] [Indexed: 01/15/2023] Open
Abstract
Background Dihydroartemisinin (DHA), a semi-synthetic derivative of artemisinin, isolated from the traditional Chinese herb Artemisia annua, is recommended as the first-line anti-malarial drug with low toxicity. DHA has been shown to possess promising anticancer activities and induce cancer cell death through apoptotic pathways, although the molecular mechanisms are not well understood. Methods In this study, cell counting kit (CCK-8) assay was employed to evaluate the survival of DHA-treated ASTC-a-1 cells. The induction of apoptosis was detected by Hoechst 33258 and PI staining as well as flow cytometry analysis. Collapse of mitochondrial transmembrane potential (ΔΨm) was measured by dynamic detection under a laser scanning confocal microscope and flow cytometry analysis using Rhodamine123. Caspase-3 activities measured with or without Z-VAD-fmk (a broad spectrum caspase inhibitor) pretreatment by FRET techniques, caspase-3 activity measurement, and western blotting analysis. Results Our results indicated that DHA induced apoptotic cell death in a dose- and time-dependent manner, which was accompanied by mitochondrial morphology changes, the loss of ΔΨm and the activation of caspase-3. Conclusion These results show for the first time that DHA can inhibit proliferation and induce apoptosis via caspase-3-dependent mitochondrial death pathway in ASTC-a-1 cells. Our work may provide evidence for further studies of DHA as a possible anticancer drug in the clinical treatment of lung adenocarcinoma.
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Affiliation(s)
- Ying-Ying Lu
- MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, South China Normal University, Guangzhou 510631, PR China.
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8
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Xiao C, Bolton R, Pan WL. Lignin from rice straw Kraft pulping: effects on soil aggregation and chemical properties. Bioresour Technol 2007; 98:1482-8. [PMID: 17126013 DOI: 10.1016/j.biortech.2005.11.014] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2005] [Revised: 11/07/2005] [Accepted: 11/09/2005] [Indexed: 05/12/2023]
Abstract
Lignin contained in pulping liquor that is generated during the pulping process for papermaking is a disposal problem for the pulp and paper industry. Separating lignin and other organic components from pulping liquor with inorganic acids may improve its applicability to fields as a beneficial soil amendment while offering a potential disposal alternative. Sulfuric acid-precipitated lignin from rice straw pulping liquor applied at rates of 1.67 and 3.34 g C kg(-1) soil was incubated to evaluate its effects on soil properties over 8 weeks of incubation. Addition of this acid-precipitated lignin at these rates decreased soil pH by 0.24-0.53 units over 8 weeks of incubation, suggesting that this sulfuric acid-precipitated lignin from pulping liquor may have potential as a soil acidifying agent. Soil electrical conductivity (EC) only increased by up to 0.36 d Sm(-1), but highest EC levels were less than 4 d Sm(-1), indicating that lignin applied at both rates would not cause salinity problems. Application of this lignin increased soil organic C by 1.46 and 3.13 g C kg(-1), and total soil N by 0.07 and 0.17 g N kg(-1) over the incubation period. Lignin improved the macroaggregation of >2mm size fraction, and increased wet microaggregate stability of >2mm and 0.5-0.25 mm aggregates compared to a nonamended control. The results of this study suggest that this acid-precipitated lignin from pulping liquor may have potential as a beneficial soil amendment.
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Affiliation(s)
- C Xiao
- Department of Crop and Soil Sciences, Washington State University, Pullman, WA 99164-6420, United States
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9
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Yu HL, Zhang YJ, Pan WL, Guo YY, Gao XW. [Identification of volatiles from field cotton plant under different induction treatments]. Ying Yong Sheng Tai Xue Bao 2007; 18:859-64. [PMID: 17615885] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
The volatiles of field cotton plant at its squaring stage were analyzed qualitatively and quantitatively under treatments of mechanical injury (treatment A), cotton bollworm (CBW) injury (treatment B), CBW plus CBW larva injury (treatment C), and salicylic acid (SA) inducement (treatment D). The volatiles were gathered in an automatic circle system, absorbed by Tenax-TA column, and analyzed with GC-MS system. About 30 kinds of volatiles were qualitatively identified, including terpenoids, aliphatic compounds, aromatic compounds, 3-hexanone, 2-hexanone, 3-hexanol, a-pinene, beta-pinene, beta-myrcene, propenoic acid, butyl ester, acetic acid, pentyl ester, acetic acid, butyl ester, butanoic acid, 3-methyl-, ethyl ester, benzaldehyde, acetophenone and 1, 3, 6-octatriene,3 ,7-dimethyl, etc., and a total of 10 primary volatiles were detected quantitatively. The results showed that both the kinds and the contents of the volatiles were notably higher in treatments B and C than in the control. It was noteworthy that 1, 3, 6-octatriene 3, 7-dimethyl was only found in treatments B and C, i. e., it only occurred in the cotton plants injured by CBW. There were no significant differences in the kinds and contents of the volatiles between treatment A and the control. Similar to CBW injury, SA inducement also enhanced the release of cotton plant volatiles.
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Affiliation(s)
- Hui-Lin Yu
- State Key Laboratory of Biology for Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100094, China
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10
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Abstract
BALB/c mice are highly susceptible to African trypanosomiasis, whereas C57BL/6 mice are relatively resistant. Other investigators have reported that the synthesis of IgG antibodies to purified membrane form of variant surface glycoprotein (mfVSG) of Trypanosoma brucei is CD1 restricted. In this study, we examine the role of the CD1d/NKT cell pathway in susceptibility and resistance of mice to infection by African trypanosomes. Administration of anti-CD1d antibodies to Trypanosoma congolense-infected BALB/c mice neither affects the parasitemia nor the survival time. Correspondingly, CD1d(-/-) and CD1d(+/+) BALB/c mice infected with T. congolense or T. brucei show no differences in either parasitaemia or survival time. The course of disease in relative resistant C57BL/6 mice infected with T. congolense is also not affected by the absence of CD1d. Parasitaemia, survival time, and plasma levels of IgG2a and IgG3 parasite-specific antibodies in infected CD1d(-/-) C57BL/6 are not different from those of infected CD1d(+/+) C57BL/6 mice. We conclude that CD1d-restricted immune responses do not play an important role in susceptibility/resistance of mice infected with virulent African trypanosomes. We speculate that virulent trypanosomes have an evasion mechanism that prevents the induction of a parasite-specific, CD1d-restricted immune response by the host.
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Affiliation(s)
- M Q Shi
- Department of Veterinary Microbiology, University of Saskatchewan, Saskatoon, Canada
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11
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Mohammad MJ, Pan WL, Kennedy AC. Chemical alteration of the rhizosphere of the mycorrhizal-colonized wheat root. Mycorrhiza 2005; 15:259-266. [PMID: 15503187 DOI: 10.1007/s00572-004-0327-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2004] [Accepted: 09/15/2004] [Indexed: 05/24/2023]
Abstract
Plexiglass pot growth chamber experiments were conducted to evaluate the chemical alterations in the rhizosphere of mycorrhizal wheat roots after inoculation with Glomus intraradices [arbuscular mycorrhizal fungus (AMF)]. Exchange resins were used as sinks for nutrients to determine whether the inoculated plant can increase the solubility and the uptake of P and micronutrients. Treatments included: (1) soil (bulk soil); (2) AMF inoculation no P addition (I-P); (3) no inoculation with no P addition (NI-P); (4) AMF inoculation with addition of 50 mg P (kg soil)(-1) (I+P), and (5) no inoculation with addition of 50 mg P (kg soil)(-1) (NI+P). The AMF inoculum was added at a rate of four spores of G. intraradices (g soil)(-1). The exchange resin membranes were inserted vertically 5 cm apart in the middle of Plexiglass pots. Spring wheat (Triticum aestivum cv. Len) was planted in each Plexiglass pot and grown for 2 weeks in a growth chamber where water was maintained at field capacity. Rhizosphere pH and redox potential (Eh), nutrient bioavailability indices and mycorrhizal colonization were determined. Mycorrhizal inoculation increased the colonization more when P was not added, but did not increase the shoot dry weight at either P level. The rhizosphere pH was lower in the inoculated plants compared to the noninoculated plants in the absence of added P, while the Eh did not change. The decrease in pH in the rhizosphere of inoculated plants could be responsible for the increased P and Zn uptake observed with inoculation. In contrast, Mn uptake was decreased by inoculation. The resin-adsorbed P was increased by inoculation, which, along with the bioavailability index data, may indicate that mycorrhizal roots were able to increase the solubility of soil P.
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Affiliation(s)
- Munir J Mohammad
- Faculty of Agriculture, Jordan University of Science and Technology, P.O. Box 3030, Irbid, Jordan.
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12
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Abstract
Mandibular tumors such as ameloblastoma or fibrous dysplasia frequently follow a relentless course despite the fact that they are pathologically benign. Patients suffered from multiple recurrences and repeated surgery, and might still lose their masticatory function. To solve the above problems, a new combined approach--segmental mandibulectomy, free fibular flap reconstruction and primary osseointegration--was applied to three cases of aggressive mandibular tumors. The pathology spectrum included an enormous ameloblastoma, a fibrous dysplasia and a multiple recurrent ameloblastoma. Fixed partial prosthesis were loaded 6 months after the procedure. There were no detectable recurrence after 30 months' follow-up. The patients regained their facial contour, dental occlusion and masticatory function in a relatively short period of time. Segmental mandibulectomy lessens the likelihood of recurrence, free fibular flap transfer restores the dental articulation function and facial contour, and immediate osseointegration has further enhanced the masticatory function. This combined approach thus improves the patients' satisfaction and ensure their social interactions. It is justified for some selected aggressive mandibular tumors.
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Affiliation(s)
- S P Hao
- Department of Otolaryngology, Chang Gung Memorial Hospital, Taiwan, ROC
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13
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Lee SH, Huang JJ, Pan WL, Chan CP. Gingival mass as the primary manifestation of multiple myeloma: report of two cases. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 1996; 82:75-9. [PMID: 8843457 DOI: 10.1016/s1079-2104(96)80380-5] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Two cases of multiple myeloma with primary manifestations in the oral cavity are reported, both presenting as a mandibular gingival/alveolar mass with hypermobility of the adjacent teeth. Roentgenographic examination demonstrated concomitant "punched-out" osteolytic jawbone lesions. After biopsy of the gingival mass was performed, multiple myeloma was subsequently diagnosed in both cases. Systemic bone scanning revealed multiple osteolytic bone lesions involving the skull and various skeletal bones. Hematologic screening showed a monoclonal gammopathy in both cases. A bone marrow biopsy confirmed the diagnosis of multiple myeloma. Awareness of the maxillofacial manifestations of multiple myeloma is important for early detection of the disease, especially in patients with initial oral involvement.
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Affiliation(s)
- S H Lee
- Department of Periodontics, Chang-Gun Memorial Hospital, Taipei, Taiwan
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14
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Liu TZ, Yang HL, Chan CP, Pan WL, Wu SK. Induction of superoxide dismutase isozymes by tumor necrosis factor-alpha and lipopolysaccharide in cultured normal and hyperplastic gingival fibroblasts. J Formos Med Assoc 1996; 95:236-40. [PMID: 8857257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
To determine whether lipopolysaccharide (LPS) and tumor necrosis factor-alpha (TNF-alpha) are involved in the induction of superoxide dismutase (SOD) in gingival tissue, we examined their effect on induction of SOD isozymes in cultured normal (NGF) and phenytoin-induced hyperplastic (PHF) gingival fibroblasts. Treatment of both NGFs and PHFs with 10 to 50 ng/mL TNF-alpha for 24 hours increased the level of manganese SOD (MnSOD) to as much as four times the level of untreated cultures. PHFs, but not NGFs, were shown to be responsive to TNF-alpha in eliciting a significant increase in copper-zinc SOD (Cu/ZnSOD), albeit in a lesser amount than MnSOD. Additionally, treatment of both types of cells with 5 to 50 mg/mL of LPS for 24 hours also elicited an increase in the levels of MnSOD. Again, an LPS-induced increase in Cu/ZnSOD levels could only be demonstrated in PHFs, but not in NGFs. These observations were further confirmed by comparing the achromatic bands associated with SOD isozymes exhibited in the electrophoretogram using a nondenaturing polyacrylamide electrophoresis technique. These results indicate that TNF-alpha and LPS were capable of inducing both MnSOD and Cu/ZnSOD simultaneously in PHF fibroblasts. PHFs may be inherently more capable than NGFs in combating oxidative stress.
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Affiliation(s)
- T Z Liu
- School of Medical Technology, Department of Nutrition, China Medical College, Chang Gung Memorial Hospital, Taoyuan
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15
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Abstract
An unusual solitary extramedullary plasmacytoma developed in the gingiva of a 28 year-old male renal transplant patient with cyclosporine (CyA)-induced gingival overgrowth. On initial presentation, there was no suspicion of a tumor within the lesion. One year later, however, the lesion had increased progressively in size, and its surface was ulcerated. At this time, the lesion was excised by gingivectomy, and histopathological examination revealed plasmacytoma. CyA was discontinued and the patient has been closely observed for 4 years with no recurrence of the gingival lesion.
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Affiliation(s)
- W L Pan
- Department of Periodontics, Chang-Gung Memorial Hospital, Taipei, Taiwan, R.O.C
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16
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Pan WL, Chan CP, Huang CC, Lai MK. Cyclosporine-induced gingival overgrowth. Transplant Proc 1992; 24:1393-4. [PMID: 1496598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- W L Pan
- Department of Periodontics, Chang-Gung Memorial Hospital, Taipei, Taiwan, Republic of China
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17
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Pan WL, Chan CP, Su CP. Localized periodontitis induced by rubber bands. Report of two cases. Changgeng Yi Xue Za Zhi 1991; 14:54-60. [PMID: 2039972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Two cases of severe localized periodontal destruction caused by rubber bands migrating toward the apices subgingivally are reported. In both cases the patients received periodontal treatment followed by orthodontic treatment and the affected teeth were maintained for two years without extraction. The inappropriate use of rubber bands may cause severe periodontal destruction or even lead to tooth mortality. The use of retentive hooks on orthodontic bands and twisted wire ligatures, as well as close professional supervision, are highly recommended to avoid this hazardous situation.
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Affiliation(s)
- W L Pan
- Department of Periodontics, Chang Gung Memorial Hospital, Taipei, Taiwan R.O.C
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Pan WL, Camberato JJ, Jackson WA, Moll RH. Utilization of Previously Accumulated and Concurrently Absorbed Nitrogen during Reproductive Growth in Maize : Influence of Prolificacy and Nitrogen Source. Plant Physiol 1986; 82:247-53. [PMID: 16665001 PMCID: PMC1056098 DOI: 10.1104/pp.82.1.247] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
A prolific maize (Zea mays L.) genotype was grown to physiological maturity under greenhouse conditions to examine the effects of reproductive sink demand on (a) the remobilization of N accumulated during vegetative growth, and (b) the partitioning of N accumulated concurrent with ear development. One- and two-eared plants were treated with either a NO(3) (-) or NH(4) (+) source of (15)N-labeled N during reproductive growth. Plants with two ears enhanced grain production, N remobilization from the stalk and roots, and N translocation to the grain from concurrently assimilated N. But, remobilization of leaf-N was unaffected by ear number. In addition, N uptake and total dry matter accumulation during the reproductive period were also unaffected, although P uptake was greater in the two-eared plants. Less than 15% of the total K(+) uptake was accumulated after silking while during this time more than 40% of the total N and more than 50% of the total P were absorbed. The data also indicate that with NO(3) (-) nutrition, internal recirculation of K(+) between shoots and roots may play a prominent role in the transport of nitrogenous solutes during grain development. N source had no effect on dry matter production and N uptake of both one- and two-eared plants. However, slightly greater partitioning of labeled-N from the NH(4) (+) source to the grain was observed in the two-eared plants.
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Affiliation(s)
- W L Pan
- Department of Agronomy and Soils, Washington State University, Pullman, Washington 99164-6420
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Pan WL, Jackson WA, Moll RH. Nitrate Uptake and Partitioning by Corn Root Systems : Differential Effects of Ammonium among Genotypes and Stages of Root Development. Plant Physiol 1985; 77:560-6. [PMID: 16664098 PMCID: PMC1064564 DOI: 10.1104/pp.77.3.560] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
The relative effects of ammonium on nitrate uptake and partitioning during induction were compared among decapitated seedlings of three corn (Zea mays L.) genotypes at two developmental stages. This study tested the hypothesis that root systems efficient at translocating products of ammonium assimilation away from sites of nitrate uptake or reduction would exhibit less inhibition of nitrate uptake by ammonium compared to root systems with inefficient N translocation efficiency. Inhibition of nitrate uptake by ammonium was relatively slight at day 5 ranging from 0% to 20% among the three genotypes, as compared to greater inhibition, from 20% to 37%, at day 8. Five-day-old roots exhibited negligible xylem translocation capacity in comparison with those grown for 8 days. Thus, although the capability to translocate ammonium assimilates out of the root increased between days 5 and 8, inhibitory effects of ammonium also increased. In the absence of ammonium, nitrate uptake per unit root mass increased between days 5 and 8. This increased activity of the uptake system was proportionally more sensitive to ammonium.Partitioning of entering nitrate into the reduction process was positively correlated with lateral root development of the inbred root systems at 5 and 8 days. This is supportive of a localization of a major portion of nitrate reduction occurring in root apical regions. Nitrate reduction was the partitioning process most severely inhibited by ammonium in all cases, ranging from 39% to 55% inhibition. In contrast, ammonium-inhibition of nitrate accumulation in the root tissue and translocation via xylem vessels varied with genotype and root age.Two mechanisms of ammonium-inhibition of nitrate are implicated, one which directly affects nitrate reduction and the uptake system associated with it, and another which may involve potassium as an intermediate regulator of nitrate accumulation in the root tissue and nitrate translocation out of the root tissue.
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Affiliation(s)
- W L Pan
- Department of Soil Science, North Carolina State University, Raleigh, North Carolina 27695-7612
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Pan WL. [Studies on the influence of harringtonine on CHO cell cytokinetics using premature chromosome condensation and clone reduction methods]. Zhonghua Zhong Liu Za Zhi 1983; 5:256-8. [PMID: 6653339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Zhang HQ, Liu HT, Deng ZX, Pan WL, Hu YY, Xue SB. [Cell cycle phase sensitivity of CHO cell to Pingyangmycin]. Yao Xue Xue Bao 1982; 17:755-60. [PMID: 6188321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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