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Zhou Y, Zheng HY, Jiang DM, Liu M, Zhang W, Yan JY. A rapid detection of tomato yellow leaf curl virus using recombinase polymerase amplification-lateral flow dipstick assay. Lett Appl Microbiol 2021; 74:640-646. [PMID: 34822723 DOI: 10.1111/lam.13611] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [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: 08/27/2021] [Revised: 11/14/2021] [Accepted: 11/17/2021] [Indexed: 11/26/2022]
Abstract
Tomato yellow leaf curl disease which is caused by Tomato yellow leaf curl virus (TYLCV) is economically important and a widely spread tomato disease in China. Rapid and accurate detection methods are important in the control TYLCV. Here, a rapid method was developed to identify TYLCV on the basis of recombinase polymerase amplification (RPA) that can be visualized in 5 min using lateral flow dipsticks. The sensitivity and the specificity of this method were evaluated. This method can detect 0·5 pg DNA after 30 min at 37°C without any expensive instrumentation. In addition, it showed higher sensitivity than a PCR method when purified DNA was used. Moreover, the TYLCV was specifically detected, whereas other viruses infecting tomato produced negative results. The crude tomato extracts used in this assay has potential application in minimally equipped plant clinic laboratories. This method will facilitate the early and rapid detection of TYLCV for the timely application of control measures.
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Affiliation(s)
- Y Zhou
- Institute of Plant Protection, Key Laboratory of Urban Agriculture (North China), Ministry of Agriculture and Rural Affairs, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - H Y Zheng
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Biotechnology in Plant Protection of Ministry of Agriculture and Zhejiang Province, Institute of Plant Virology, Ningbo University, Ningbo, China
| | - D M Jiang
- Institute of Quality Standard and Testing Technology, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - M Liu
- Institute of Plant Protection, Key Laboratory of Urban Agriculture (North China), Ministry of Agriculture and Rural Affairs, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - W Zhang
- Institute of Plant Protection, Key Laboratory of Urban Agriculture (North China), Ministry of Agriculture and Rural Affairs, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - J Y Yan
- Institute of Plant Protection, Key Laboratory of Urban Agriculture (North China), Ministry of Agriculture and Rural Affairs, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
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Cheng H, Feng Y, Duan Q, Jiang DM, Tao KY. Floating Microparticulate Oral Diltiazem Hydrochloride Delivery System for Improved Delivery to Heart. TROP J PHARM RES 2015. [DOI: 10.4314/tjpr.v14i6.1] [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: 11/17/2022] Open
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Lu MP, Li JD, Quan ZX, Ou YS, Jiang DM, Li YB. In vitro evaluation of antibacterial activity and cytotoxicity of novel nanocomposite material for bone filling. ACTA ACUST UNITED AC 2013. [DOI: 10.1179/143307511x12922272563662] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Affiliation(s)
- M P Lu
- Department of Orthopaedic SurgeryThe First Affiliated Hospital, Chongqing Medical University, Chongqing 400016, China
| | - J D Li
- Research Center for Nano‐BiomaterialsAnalytical and Testing Center, Sichuan University, Chengdu 610064, China
| | - Z X Quan
- Department of Orthopaedic SurgeryThe First Affiliated Hospital, Chongqing Medical University, Chongqing 400016, China
| | - Y S Ou
- Department of Orthopaedic SurgeryThe First Affiliated Hospital, Chongqing Medical University, Chongqing 400016, China
| | - D M Jiang
- Department of Orthopaedic SurgeryThe First Affiliated Hospital, Chongqing Medical University, Chongqing 400016, China
| | - Y B Li
- Research Center for Nano‐BiomaterialsAnalytical and Testing Center, Sichuan University, Chengdu 610064, China
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Abstract
Coleus blumei, which was found originally in Indonesia, is an ornamental plant grown worldwide. It can be infected by several viroids of the genus Coleviroid, family Pospiviroidae. Six main viroids that infect coleus have been reported: Coleus blumei viroid 1 through 6 (CbVd-1 ~ CbVd-6). Although CbVd-1 was first reported in a commercial coleus in Brazil in 1989 (1), and then in Germany, Japan, Canada, Korea, China, and India, CbVd-5 was reported only in China in 2009 (2). Symptoms caused by CbVd-5 varied depending on different cultivars, and in case of an unknown cultivar of "Red with dark green edge," are very clear albino symptoms. From 2010 to 2011, 60 and 3 leaf samples of coleus were collected from Hyderabad, India, and Java, Indonesia, respectively, and subjected to low molecular weight RNA extraction according to Li et al. (3). The results of dot-blot hybridization using CbVd-5 cRNA probes and RT-PCR using CbVd-5 specific primers (CbVd-5-PF: 5'-TGACTAGAACAGTAGTAAAG-3' / CbVd-5-PR: 5'-AATTGAGGTCAAACCTCTTT-3') demonstrated that 28 out of the 60 samples from India and all three samples from Indonesia were positive for CbVd-5. The resulting RT-PCR fragments from one sample selected randomly from each country were cloned into the pMD18-T vector (Takara) and transformed into E. coli DH5α competent cells. Five positive clones of each sample were sequenced. The result of sequence analysis revealed that the similarities of CbVd-5 between the sequences we obtained and the reference sequence (GenBank Accession No. NC003683) were 97.8 to 100%. Bioassay using nine viroid-free coleus plants from three cultivars (three from each cultivar), inoculated with CbVd-5 infectious clones by stem slashing, demonstrated that CbVd-5 could induce albino symptom on the leaves of the unknown cultivar "Red with dark green edge" 2 months after inoculation. To our knowledge, this is the first report of CbVd-5 from India and Indonesia, and the second report of CbVd-5 in the world. Considering the effect of CbVd-5 on the appearance of coleus and its recombination ability, a certification program may be needed to control the spread of this viroid. References: (1) M. E. N. Fonseca et al. Fitopatol. Bras. 14:94, 1989. (2) W. Y. Hou et al. Arch. Virol. 154:315, 2009. (3) S. F. Li et al. Ann. Phytopathol. Soc. Jpn. 61:381, 1995.
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Affiliation(s)
- D M Jiang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China and Institute of Plant Virology, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian Province, China
| | - S F Li
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - F H Fu
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Z J Wu
- Institute of Plant Virology, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian Province, China
| | - L H Xie
- Institute of Plant Virology, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian Province, China
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Abstract
Coleus (Coleus blumei) is an ornamental plant that is susceptible to infection by several viroids of the genus Coleviroid, which is a member of the family Pospiviroidae. Coleus blumei viroid (CbVd) -1 was first reported in commercial yellow coleus fields in Brazil in 1989 (1). In addition, CbVd-2, CbVd-3, and CbVd-4 have only been detected from coleus in Germany in 1996 (4). CbVd-5 and CbVd-6 were recently identified in China (2). In March 2010, leaves were collected from 50 symptomless coleus plants from a commercial nursery in Hainan Province, China. Total RNA was extracted from the leaves (3). Reverse transcription (RT)-PCR using CbVd-2 specific primers (forward: 5'-AGCTTACCTGGGTTCCCT-3' and reverse: 5'-CTCTCCTCTATTTACTCTCTTCTC-3') corresponding to positions 76 to 93 and 52 to 75 on the CbVd-2 reference sequence, respectively (GenBank Accession No. NC003682). Amplification of a 301-bp product was obtained from one sample. This PCR product was then cloned into pMD18-T (Takara, Dalian, China). Twelve positive clones were sequenced and the results were subjected to BLAST analysis. Sequence analysis showed that two sequences (GenBank Accessions Nos. HQ727542 and HQ727544) shared 99% identity with the reference sequence of CbVd-2 (NC003682), and four sequences (HQ727541, HQ727543, HQ727545 and HQ727547) had 99.34% identity with the reference sequence of CbVd-2 (NC003682). The proposed secondary structures of these variants have approximately 75% paired nucleotides. Results suggested the presence of CbVd-2, which is a member of the Coleviroid genus, Pospoviroidae family. To our knowledge, this is the first report of CbVd-2 from commercial coleus in China. References: (1) M. E. N. Fonseca et al. Fitopatol. Bras. 14:94, 1989. (2) W. Y. Hou et al. Arch. Virol. 154:993, 2009. (3) S. F. Li et al. Ann. Phytopathol. Soc. Jpn. 61:381, 1995. (4) R. L. Spieker et al. J. Gen. Virol. 77:2839, 1996.
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Affiliation(s)
- F H Fu
- Department of Fruit Science, College of Agronomy and Biotechnology, China Agricultural University, and State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Yuanmingyuan West No. 2 100193, Beijing, China
| | - S F Li
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Yuanmingyuan West No. 2 100193, Beijing, China
| | - D M Jiang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Yuanmingyuan West No. 2 100193, Beijing, China
| | - H Q Wang
- Department of Fruit Science, College of Agronomy and Biotechnology, China Agricultural University, Beijing, China
| | - A Q Liu
- Spice and Beverage Crops Research Institute, Chinese Academy of Tropical Agricultural Sciences, Xinglong, Hainan 571533, China
| | - L W Sang
- Spice and Beverage Crops Research Institute, Chinese Academy of Tropical Agricultural Sciences, Xinglong, Hainan 571533, China
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Abstract
Autologous mesenchymal stem cells (MSCs) are limited in their clinical application because tissue-engineered bone cannot be pre-fabricated. Allogeneic MSCs are readily available but carry the risk of transplant rejection. It is not yet clear whether allogeneic MSCs can induce a rejection response during bone formation. In this study, two strains of genetically unmatched mini-pigs were used as experimental animals to study the immunological changes in MSCs in vitro and in vivo when generating bone. Mini-pig MSCs showed low immunogenicity during osteogenesis both in vitro and in vivo, indicating that allogeneic MSCs had little or no immunogenicity in osteosis. In conclusion, allogeneic MSCs are an important source of seed cells for the tissue engineering of bone. This favours the clinical application of pre-constructed tissue-engineered bone.
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Affiliation(s)
- S Q Guo
- Department of Orthopaedics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China.
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Liao SY, Jiang DM, Huang ZH, Cheng Q, Gao J, Hu Y. Approximation of flammability region for natural gas-air-diluent mixture. J Hazard Mater 2005; 125:23-8. [PMID: 15990227 DOI: 10.1016/j.jhazmat.2005.05.021] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2004] [Revised: 03/24/2005] [Accepted: 05/24/2005] [Indexed: 05/03/2023]
Abstract
The growing implementation of exhaust gas recirculation (EGR) in reducing NO(x) emissions of engine is of paramount motivation to perform a fundamental research on the flammability characteristics of fuel-air-diluent mixtures. In this work, the influences of EGR on the flammability region of natural gas-air-diluent flames were experimentally studied in a constant volume bomb. An assumption of critical burning velocity at flammability limit is proposed to approximately determine the flammability region of these mixtures. Based on this assumption, an estimation of the flammability map for natural gas-air-diluent mixtures was obtained by using the empirical formula of burning velocity data. The flammability regions of natural gas-air mixtures with EGR are plotted versus the EGR rate. From the comparison of estimated results and experimental measurements, it is suggested that the accuracy of prediction is largely dependent upon the formula of burning velocity used. Meanwhile, the influence of pressure on the critical burning velocity at flammability limit is also investigated. On the basis of the pressure dependence criterion, the estimation was performed for the circumstance of high temperature and pressure, and the prediction results still agree well with those of experiments.
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Affiliation(s)
- S Y Liao
- State Key Laboratory for Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an 710049, PR China.
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Liao SY, Cheng Q, Jiang DM, Gao J. Experimental study of flammability limits of natural gas-air mixture. J Hazard Mater 2005; 119:81-84. [PMID: 15752851 DOI: 10.1016/j.jhazmat.2004.09.031] [Citation(s) in RCA: 12] [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: 12/17/2003] [Revised: 06/22/2004] [Accepted: 09/24/2004] [Indexed: 05/24/2023]
Abstract
Flammability limits data are essential for a quantitative risk assessment of explosion hazard associated with the use of combustible gas. The present work is to obtain the fundamental flammability data for prevention of the hazards in the practical applications. Experiments have been conducted in a constant volume combustion bomb, and the fuel considered here is natural gas (NG). The pressure histories in the combustion bomb are recorded and a criterion of 7% pressure rise has been used to judge a flammable mixture. The effects of ethane on NG-air flammability limits have been investigated. By adding diluent (carbon dioxide, nitrogen or their mixture) into NG-air mixture, the dilution effects on the flammability limits have been explored as well, and the results are plotted as functions of diluent ratio.
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Affiliation(s)
- S Y Liao
- School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710049, PR China
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Ni WD, An H, Jiang DM. [Comparative study on osteogenesis of three types growth factors recombination artificial bones]. Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi 1999; 13:315-20. [PMID: 12080826] [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: 02/25/2023]
Abstract
OBJECTIVE To compare the osteogenesis of recombination artificial bones, which are bovine deproteined bone (bDPB) and bovine bone morphogenetic protein (bBMP), combined with tumor necrosis factor alpha (TNF alpha), basic fibroblast growth factor (bFGF), epidermal growth factor (EGF) respectively. METHODS One hundred trephined skull bone defects in fifty rabbits were divided into four groups, which implanted with bDPB/bBMP/TNF alpha, bDPB/bBMP/bFGF, bDPB/bBMP/EGF, and bDPB/bBMP respectively. X-ray and histological changes were observed in the 1st, 2nd, 4th, 6th, 8th weeks after implantation. The content of 35S and 45Ca and ash weight were measured at 10 and 42 days after operation. RESULTS The osteogenesis of bDPB/bBMP/TNF alpha group was stronger than that of bDPB/bBMP/bFGF group(P < 0.01), while bDPB/bBMP/bFGF group was stronger than that of bDPB/bBMP/EGF(P < 0.01). No significant statistical difference were found between bDPB/bBMP/EGF and bDPB/bBMP(P > 0.05). CONCLUSION TNF alpha combined with bBMP and carrier can stimulate bone formation and increase the volume of new bone in vivo. It suggests that bDPB/bBMP/TNF alpha is a valuable biomaterial of bone graft.
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Affiliation(s)
- W D Ni
- Department of Orthopedic Surgery, First Affiliated Hospital, Chongqing University of Medical Science, Chongqing, P. R. China 400016
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Jiang DM, Paavilainen P, Lavikainen J, Reinikainen K, Näätänen R. [Mismatch negativity (MMN) to very short interval between regular tones]. Sheng Li Xue Bao 1994; 46:561-7. [PMID: 7878484] [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: 01/27/2023]
Abstract
The Mismatch Negativity (MMN) component of the auditory event-related potential (AERP) is elicited by infrequent, physically "deviant" stimuli in a sequence of frequent homogeneous stimuli ("standard"), for instance, by a change in frequency, intensity or duration etc. When the inter-stimulus interval (ISI) of tone pips was occasionally shortened either to 300, 150, 75, 60 and 52 ms from regular ISI 600 ms, which resulted in the elicitation of MMN. The amplitude of MMN elicited by occasional shorter ISI was not reduced as a function of ISI shortening. This indicates that the MMN is not just due to activation of new afferent elements by deviant stimulus. Thus, by no means the elicitation of the MMN can be explained on the basis of the refractoriness.
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Affiliation(s)
- D M Jiang
- Shanghai Brain Research Institute, Chinese Academy of Sciences, Shanghai
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Tan CX, Dong G, Jiang DM. Relationship between HBsAg detected in liver tissue and liver injury. Chin Med J (Engl) 1988; 101:564-7. [PMID: 3148395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
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Chen WF, Liu SL, Tian GS, Jiang DM. Depressed production of interleukin 2 and immune interferon by peripheral blood lymphocytes of patients with viral hepatitis B. Chin Med J (Engl) 1988; 101:105-10. [PMID: 3136974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
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Jiang DM. [A pathological and immunohistochemical study of severe viral hepatitis]. Zhonghua Nei Ke Za Zhi 1984; 23:728-30, 789. [PMID: 6532686] [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: 01/20/2023]
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Wu ZY, Ke YQ, Jiang DM. [Transection of cervical cord complicated by cardio-vascular disorders and hypothermia: a preliminary study]. Zhonghua Wai Ke Za Zhi 1983; 21:21-3, 62. [PMID: 6851778] [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: 01/22/2023]
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