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Zhang P, Ohshima S, Zhao H, Kobayashi S, Kado S, Minami T, Kin F, Miyashita A, Iwata A, Kondo Y, Qiu D, Wang C, Luo M, Konoshima S, Inagaki S, Okada H, Mizuuchi T, Nagasaki K. Characterization of a retroreflector array for 320-GHz interferometer system in Heliotron J. Rev Sci Instrum 2023; 94:093501. [PMID: 37671952 DOI: 10.1063/5.0162649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Accepted: 08/16/2023] [Indexed: 09/07/2023]
Abstract
A retroreflector array, composed of a cluster of small retroreflectors, is experimentally studied for application to a Michelson-type interferometer system in the fusion plasma experiment. Such a new-type reflector has the potential to be a vital and effective tool at a spatially limited location, such as on the vacuum chamber wall of plasma experimental devices. To investigate the effect of retroreflector array on the reflected beam properties, a tabletop experiment is performed with the retroreflector array composed of 4 mm corner-cube retroreflectors and with a 320-GHz (λ ∼ 0.937 mm) submillimeter wave source. An imaging camera is utilized to measure the submillimeter wave beam profile and is scanned perpendicularly to the beam propagation direction if necessary. The experimental result exhibits a diffraction effect on the reflected beam, resulting in the emergence of discrete peaks on the reflected beam profile, as predicted in the past numerical study; however, the most reflected beam power converges on the one reflected into the incident direction, resulting from a property as a retroreflector. Furthermore, the dependence of the reflected beam on the incident beam angle is characterized while fixing the detector position, and the retroreflection beam intensity is found to vary due to the diffraction effect. Such an undesired variation of beam intensity induced by the diffraction can be suppressed with a focusing lens placed in front of the detector in the practical application to an interferometer.
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Affiliation(s)
- P Zhang
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - S Ohshima
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - H Zhao
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - S Kobayashi
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - S Kado
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - T Minami
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - F Kin
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - A Miyashita
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - A Iwata
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Y Kondo
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - D Qiu
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - C Wang
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - M Luo
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - S Konoshima
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - S Inagaki
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - H Okada
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - T Mizuuchi
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - K Nagasaki
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
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Tadda SA, Li C, Ding J, Li J, Wang J, Huang H, Fan Q, Chen L, He P, Ahiakpa JK, Karikari B, Chen X, Qiu D. Integrated metabolome and transcriptome analyses provide insight into the effect of red and blue LEDs on the quality of sweet potato leaves. Front Plant Sci 2023; 14:1181680. [PMID: 37324670 PMCID: PMC10266350 DOI: 10.3389/fpls.2023.1181680] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Accepted: 05/02/2023] [Indexed: 06/17/2023]
Abstract
Red and blue light-emitting diodes (LEDs) affect the quality of sweet potato leaves and their nutritional profile. Vines cultivated under blue LEDs had higher soluble protein contents, total phenolic compounds, flavonoids, and total antioxidant activity. Conversely, chlorophyll, soluble sugar, protein, and vitamin C contents were higher in leaves grown under red LEDs. Red and blue light increased the accumulation of 77 and 18 metabolites, respectively. Alpha-linoleic and linolenic acid metabolism were the most significantly enriched pathways based on Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analyses. A total of 615 genes were differentially expressed between sweet potato leaves exposed to red and blue LEDs. Among these, 510 differentially expressed genes were upregulated in leaves grown under blue light compared with those grown under red light, while the remaining 105 genes were expressed at higher levels in the latter than in the former. Among the KEGG enrichment pathways, blue light significantly induced anthocyanin and carotenoid biosynthesis structural genes. This study provides a scientific reference basis for using light to alter metabolites to improve the quality of edible sweet potato leaves.
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Affiliation(s)
- Shehu A. Tadda
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, China
- Department of Agronomy, Federal University Dutsin-Ma, Katsina, Nigeria
- Agriculture Research Group, Organization of African Academic Doctors (OAAD), Nairobi, Kenya
| | - Chengyue Li
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Jintao Ding
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Jian’an Li
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Jingjing Wang
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Huaxing Huang
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Quan Fan
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Lifang Chen
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Pengfei He
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, China
| | - John K. Ahiakpa
- Agriculture Research Group, Organization of African Academic Doctors (OAAD), Nairobi, Kenya
| | - Benjamin Karikari
- Agriculture Research Group, Organization of African Academic Doctors (OAAD), Nairobi, Kenya
- Department of Agricultural Biotechnology, University for Development Studies, Tamale, Ghana
| | - Xuanyang Chen
- College of Agriculture, Fujian Agriculture, and Forestry University, Fuzhou, China
- Key Laboratory of Crop Biotechnology, Fujian Agriculture and Forestry University, Fujian Province Universities, Fuzhou, China
| | - Dongliang Qiu
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, China
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Li C, Chen L, Fan Q, He P, Wang C, Huang H, Huang R, Tang J, Tadda SA, Qiu D, Qiu Z. Weighted Gene Co-Expression Network Analysis to Explore Hub Genes of Resveratrol Biosynthesis in Exocarp and Mesocarp of 'Summer Black' Grape. Plants (Basel) 2023; 12:578. [PMID: 36771662 PMCID: PMC9920568 DOI: 10.3390/plants12030578] [Citation(s) in RCA: 1] [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] [Figures] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 01/17/2023] [Accepted: 01/25/2023] [Indexed: 06/18/2023]
Abstract
Resveratrol is a polyphenol compound beneficial to human health, and its main source is grapes. In the present study, the molecular regulation of resveratrol biosynthesis in developing grape berries was investigated using weighted gene co-expression network analysis (WGCNA). At the same time, the reason for the resveratrol content difference between grape exocarp (skin) and mesocarp (flesh) was explored. Hub genes (CHS, STS, F3'5'H, PAL, HCT) related to resveratrol biosynthesis were screened with Cytoscape software. The expression level of hub genes in the exocarp was significantly higher than that in the mesocarp, and the expressions of the hub genes and the content of resveratrol in exocarp peaked at the maturity stage. While the expression levels of PAL, CHS and STS in the mesocarp, reached the maximum at the maturity stage, and F3'5'H and HCT decreased. These hub genes likely play a key role in resveratrol biosynthesis. Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis further indicated that resveratrol biosynthesis was related to flavonoid biosynthesis, phenylalanine metabolism, phenylpropanoid biosynthesis, and stilbene biosynthesis pathways. This study has theoretical significance for exploring genes related to resveratrol biosynthesis in the exocarp and mesocarp of grapes, and provides a theoretical basis for the subsequent function and regulatory mechanism of hub genes.
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Affiliation(s)
- Chengyue Li
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Lifang Chen
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Quan Fan
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Pengfei He
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Congqiao Wang
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Huaxing Huang
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Ruyan Huang
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Jiaqi Tang
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Shehu A. Tadda
- Department of Agronomy, Faculty of Agriculture, Federal University Dutsin-Ma, Dutsin-Ma 821101, Nigeria
| | - Dongliang Qiu
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Zhipeng Qiu
- Lunong Agricultural Technology Co., Ltd., Xiamen 361100, China
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Huang H, Ji H, Ju S, Lin W, Li J, Lv X, Lin L, Guo L, Qiu D, Yan J, Ma X. Pantranscriptome combined with phenotypic quantification reveals germplasm kinship and regulation network of bract color variation in Bougainvillea. Front Plant Sci 2022; 13:1018846. [PMID: 36466294 PMCID: PMC9713818 DOI: 10.3389/fpls.2022.1018846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/14/2022] [Accepted: 10/07/2022] [Indexed: 06/17/2023]
Abstract
Bracts are the metamorphic non-flower organ in angiosperm plants. The variation of the color and shape of bracts was found to be neo-functionalized (i.e., similar to petals), garnering research interest as a pollinator attractor. Bougainvillea is known for its specialized, large, and colorful bracts, which contrast with its tiny colorless flowers. As a plant whose bracts vary greatly in terms of coloration, the molecular mechanisms for Bougainvillea bract coloration and polychroism are largely unknown. The lack of genomic information for Bougainvillea largely hinders studies into the evolution and genetic basis of bract color variation. In this study, a pan-transcriptome of bracts obtained from 18 Bougainvillea glabra accessions was employed to investigate the global population-level germplasm kinship and the gene regulation network for bract color variation. Our results showed that the bracts of B. glabra accessions have largely differentiated International Commission on Illumination (CIE) L-a-b values. Moreover, germplasm kinship detected using principal component analysis, phylogeny, and admixture analysis showed three optimal subgroups, two of them distinctly clustered, which were not directly correlated with bract color variation at the population level. Differentially expressed genes (DEGs) between accessions of high vs. low L-a-b values revealed several considerable upregulated genes related to bract color L-a-b variation. A weighted gene co-expression network was constructed, and eight co-expressed regulation modules were identified that were highly correlated with variation in bract CIE L-a-b color values. Several candidate DEGs and co-expressed hub genes (e.g., GERD, SGR, ABCA3, GST, CYP76AD1, CYP76C, and JAZ) that were tightly associated with bract color variation were eventually determined responsible for L-a-b colorations, which might be the core regulation factors contributing to the B. glabra bract color variation. This study provides valuable insights into the research on germplasm kinship, population-level pan-transcriptome expression profiles, and the molecular basis of color variation of key innovative bracts in horticultural Bougainvillea.
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Affiliation(s)
- Huaxing Huang
- Center for Genomics and Biotechnology, School of Future Technology, Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou, China
- Yuanshan Institute of Bougainvillea in Longhai, Zhangzhou, China
| | - Hongli Ji
- Vegetable and Flower Institute, Jiangxi Academy of Agricultural Sciences, Nanchang, China
| | - Song Ju
- Center for Genomics and Biotechnology, School of Future Technology, Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou, China
- College of Forestry, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Wei Lin
- College of Forestry, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Jing Li
- Center for Genomics and Biotechnology, School of Future Technology, Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou, China
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Xuanrui Lv
- Center for Genomics and Biotechnology, School of Future Technology, Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou, China
- College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Lixian Lin
- Center for Genomics and Biotechnology, School of Future Technology, Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou, China
- College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Lijin Guo
- International Magnesium Institute, School of Future Technology, Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Dongliang Qiu
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Jianyong Yan
- Yuanshan Institute of Bougainvillea in Longhai, Zhangzhou, China
| | - Xiaokai Ma
- Center for Genomics and Biotechnology, School of Future Technology, Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory of Orchid Conservation and Utilization of National Forestry and Grassland Administration at College of Landscape Architecture, Fujian Agriculture and Forestry University, Fuzhou, China
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5
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Zhang P, Ohshima S, Zhao H, Deng C, Kobayashi S, Kado S, Minami T, Matoike R, Miyashita A, Iwata A, Kondo Y, Qiu D, Wang C, Luo M, Konoshima S, Inagaki S, Okada H, Mizuuchi T, Nagasaki K. Development and initial results of 320 GHz interferometer system in Heliotron J. Rev Sci Instrum 2022; 93:113519. [PMID: 36461432 DOI: 10.1063/5.0101808] [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] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Accepted: 10/02/2022] [Indexed: 06/17/2023]
Abstract
A new 320 GHz solid-state source interferometer is installed in the Heliotron J helical device to explore the physics of high-density plasmas (ne > 2-3 × 1019 m-3, typically) realized with advanced fueling techniques. This interferometry system is of the Michelson type and is based on the heterodyne principle, with two independent solid-state sources that can deliver an output power of up to 50 mW. A high time resolution measurement of <1 µs can be derived by tuning the frequency of one source in the frequency range of 312-324 GHz on the new system, which can realize the fluctuation measurement. We successfully measured the line-averaged electron density in high-density plasma experiments. The measured density agreed well with a microwave interferometer measurement using a different viewing chord, demonstrating that the new system can be used for routine diagnostics of electron density in Heliotron J.
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Affiliation(s)
- P Zhang
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - S Ohshima
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - H Zhao
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - C Deng
- University of California, Los Angeles, California 90095-1594, USA
| | - S Kobayashi
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - S Kado
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - T Minami
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - R Matoike
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - A Miyashita
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - A Iwata
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Y Kondo
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - D Qiu
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - C Wang
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - M Luo
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - S Konoshima
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - S Inagaki
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - H Okada
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - T Mizuuchi
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - K Nagasaki
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
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Wang J, Li J, Lin W, Deng B, Lin L, Lv X, Hu Q, Liu K, Fatima M, He B, Qiu D, Ma X. Genome-wide identification and adaptive evolution of CesA/Csl superfamily among species with different life forms in Orchidaceae. Front Plant Sci 2022; 13:994679. [PMID: 36247544 PMCID: PMC9559377 DOI: 10.3389/fpls.2022.994679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Accepted: 08/26/2022] [Indexed: 06/16/2023]
Abstract
Orchidaceae, with more than 25,000 species, is one of the largest flowering plant families that can successfully colonize wide ecological niches, such as land, trees, or rocks, and its members are divided into epiphytic, terrestrial, and saprophytic types according to their life forms. Cellulose synthase (CesA) and cellulose synthase-like (Csl) genes are key regulators in the synthesis of plant cell wall polysaccharides, which play an important role in the adaptation of orchids to resist abiotic stresses, such as drought and cold. In this study, nine whole-genome sequenced orchid species with three types of life forms were selected; the CesA/Csl gene family was identified; the evolutionary roles and expression patterns of CesA/Csl genes adapted to different life forms and abiotic stresses were investigated. The CesA/Csl genes of nine orchid species were divided into eight subfamilies: CesA and CslA/B/C/D/E/G/H, among which the CslD subfamily had the highest number of genes, followed by CesA, whereas CslB subfamily had the least number of genes. Expansion of the CesA/Csl gene family in orchids mainly occurred in the CslD and CslF subfamilies. Conserved domain analysis revealed that eight subfamilies were conserved with variations in orchids. In total, 17 pairs of CesA/Csl homologous genes underwent positive selection, of which 86%, 14%, and none belonged to the epiphytic, terrestrial, and saprophytic orchids, respectively. The inter-species collinearity analysis showed that the CslD genes expanded in epiphytic orchids. Compared with terrestrial and saprophytic orchids, epiphytic orchids experienced greater strength of positive selection, with expansion events mostly related to the CslD subfamily, which might have resulted in strong adaptability to stress in epiphytes. Experiments on stem expression changes under abiotic stress showed that the CslA might be a key subfamily in response to drought stress for orchids with different life forms, whereas the CslD might be a key subfamily in epiphytic and saprophytic orchids to adapt to freezing stress. This study provides the basic knowledge for the further systematic study of the adaptive evolution of the CesA/Csl superfamily in angiosperms with different life forms, and research on orchid-specific functional genes related to life-history trait evolution.
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Affiliation(s)
- Jingjing Wang
- Center for Genomics and Biotechnology, School of Future Technology, Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou, China
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Jing Li
- Center for Genomics and Biotechnology, School of Future Technology, Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou, China
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Wei Lin
- College of Forestry, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Ban Deng
- Center for Genomics and Biotechnology, School of Future Technology, Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Lixian Lin
- Center for Genomics and Biotechnology, School of Future Technology, Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou, China
- College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Xuanrui Lv
- Center for Genomics and Biotechnology, School of Future Technology, Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou, China
- College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Qilin Hu
- Center for Genomics and Biotechnology, School of Future Technology, Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou, China
- College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Kunpeng Liu
- Center for Genomics and Biotechnology, School of Future Technology, Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou, China
- College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Mahpara Fatima
- Center for Genomics and Biotechnology, School of Future Technology, Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Bizhu He
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory of Orchid Conservation and Utilization of National Forestry and Grassland Administration at College of Landscape Architecture, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Dongliang Qiu
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Xiaokai Ma
- Center for Genomics and Biotechnology, School of Future Technology, Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory of Orchid Conservation and Utilization of National Forestry and Grassland Administration at College of Landscape Architecture, Fujian Agriculture and Forestry University, Fuzhou, China
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Zhang Y, Liu F, Wang B, Qiu D, Liu J, Wu H, Cheng C, Bei X, Lü P. First Report of Burkholderia cepacia Causing Finger-Tip Rot on Banana Fruit in the Guangxi Province of China. Plant Dis 2022; 106:PDIS05211083PDN. [PMID: 34854762 DOI: 10.1094/pdis-05-21-1083-pdn] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Affiliation(s)
- Yongyan Zhang
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Fan Liu
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Bin Wang
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Dongliang Qiu
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Jiapeng Liu
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Huan Wu
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Chunzhen Cheng
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- College of Horticulture, Shanxi Agricultural University, Taigu 030801, China
| | - Xuejun Bei
- College of Biology and Pharmacy, Yulin Normal University, Yulin 537000, China
| | - Peitao Lü
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China
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Abstract
Emerging evidence suggests that growth factors are crucial in regenerative endodontic therapy. To achieve the desired effects, the systematic administration of supraphysiologic concentrations of exogenous growth factors is commonly performed, but this is usually associated with high costs, technique, and safety issues. Here, we describe a novel biomaterial that can manipulate endogenous growth factors without the need for adding exogenous growth factors. Transforming growth factor β1 binding peptide (TGFp) was grafted onto the surface of a neutral pH phytic acid-derived bioactive glass (PSC) to synthesize modified bioactive glass (PSC-TGFp). Fourier transform infrared spectroscopy and thermogravimetric analysis results demonstrated that the TGFp was successfully grafted to the surface of the PSC. Scanning electron microscopy and x-ray diffraction showed that PSC-TGFp possessed good in vitro bioactivity. After soaking in simulated body fluid for 24 h, hydroxyapatite formed on the surface of PSC-TGFp. Enzyme-linked immunosorbent assay showed that PSC-TGFp could capture endogenous transforming growth factor β1 from dentin matrix-extracted proteins (DMEP) and release it slowly over 21 d. Cytologic experiments revealed that PSC-TGFp after adsorbing DMEP could enhance the adhesion, migration, viability, and odontogenic differentiation of stem cells from apical papilla. The results highlight that PSC-TGFp may be a promising biomaterial to manipulate endogenous growth factors for regenerative endodontic therapy in the future.
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Affiliation(s)
- J Wu
- Department of Cariology and Endodontology, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing, China
| | - S Mao
- Department of Cariology and Endodontology, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing, China
| | - L Xu
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, China
| | - D Qiu
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, China
| | - S Wang
- Department of Cariology and Endodontology, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing, China
| | - Y Dong
- Department of Cariology and Endodontology, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing, China
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Bei J, Xu G, Chang J, Wang X, Qiu D, Ruan J, Li X, Gao S. [SARS-CoV-2 with transcription regulatory sequence motif mutation poses a greater threat]. Nan Fang Yi Ke Da Xue Xue Bao 2022; 42:399-404. [PMID: 35426804 DOI: 10.12122/j.issn.1673-4254.2022.03.12] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
OBJECTIVE To analyze the mutations in transcription regulatory sequences (TRSs) of coronaviruss (CoV) to provide the basis for exploring the patterns of SARS-CoV-2 transmission and outbreak. METHODS A combined evolutionary and molecular functional analysis of all sets of publicly available genomic data of viruses was performed. RESULTS A leader transcription regulatory sequence (TRS-L) usually comprises the first 60-70 nts of the 5' UTR in a CoV genome, and the body transcription regulatory sequences (TRS-Bs) are located immediately upstream of the genes other than ORF1a and 1b. In each CoV genome, the TRS-L and TRS-Bs share a specific consensus sequence, namely the TRS motif. Any changes of nucleotide residues in the TRS motifs are defined as TRS motif mutations. Mutations in the TRS-L or multiple TRS-Bs result in superattenuated variants. The spread of super-attenuated variants may cause an increase in asymptomatic or mild infections, prolonged incubation periods and a decreased detection rate of the viruses, thus posing new challenges to SARS-CoV-2 prevention and control. The super-attenuated variants also increase their possibility of long-term coexistence with humans. The Delta variant is significantly different from all the previous variants and may lead to a large-scale transmission. The Delta variant (B.1.617.2) with TRS motif mutation has already appeared and shown signs of spreading in Singapore, which, and even the Southeast Asia, may become the new epicenter of the next wave of SARS-CoV-2 outbreak. CONCLUSION TRS motif mutation will occur in all variants of SARS-CoV-2 and may result in super-attenuated variants. Only super-attenuated variants with TRS motif mutations will eventually lose the abilities of cross-species transmission and causing outbreaks.
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Affiliation(s)
- J Bei
- Agro-Biological Gene Research Center, Guangdong Academy of Agricultural Sciences, Guangzhou 510275, China
| | - G Xu
- College of Life Sciences, Nankai University, Tianjin 300071, China
| | - J Chang
- College of Life Sciences, Nankai University, Tianjin 300071, China
| | - X Wang
- School of Mathematical Sciences, Nankai University, Tianjin 300071, China
| | - D Qiu
- John Van Geest Cancer Research Centre, School of Science and Technology, Nottingham Trent University, Nottingham, NG11 8NS, United Kingdom
| | - J Ruan
- School of Mathematical Sciences, Nankai University, Tianjin 300071, China
| | - X Li
- College of Life Sciences, Nankai University, Tianjin 300071, China
| | - S Gao
- College of Life Sciences, Nankai University, Tianjin 300071, China
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10
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Qiu D, Li J, Zhang J, Minfeng C, Gao X, Tang Y, Zhang Y, Yi X, Yin H, Gan Y, Wang G, Zu X, Hu S, Yi C. Dual-Tracer PET/CT-Targeted, mpMRI-Targeted, systematic biopsy, and combined biopsy for the diagnosis of prostate cancer. Eur Urol 2022. [DOI: 10.1016/s0302-2838(22)00824-7] [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: 11/25/2022]
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11
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Li M, Cao Y, Debnath B, Yang H, Kui X, Qiu D. Cloning and Expression Analysis of Flavonoid 3', 5'-Hydroxylase Gene from Brunfelsia acuminata. Genes (Basel) 2021; 12:genes12071086. [PMID: 34356102 PMCID: PMC8304711 DOI: 10.3390/genes12071086] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 07/07/2021] [Accepted: 07/15/2021] [Indexed: 11/20/2022] Open
Abstract
The full-length cDNA sequence of F3′5′H gene from the Brunfelsia acuminata was obtained by RT-PCR and RACE, whose GenBank accession number is JQ678765. The sequence contains a 1521 bp open reading frame, 120 bp 5′UTR and 61 bp 3′UTR, encoding a total of 506 amino acids. The molecular mass of the predicted protein is 56.47 kDa with an estimated pI of 8.78, respectively. Sequence alignment showed that the amino acid sequence of F3′5′H was 91%, 87% and 84% with that of Petunia × hybrida, Nierembergia sp., Solanum tuberosum, respectively. Real-time quantitative PCR analysis showed that the expression of F3′5′H gene was different in petals of different days, which was the highest expression level on day 0 and significantly higher than other days. The results indicated that F3′5′H might play key role in flower color regulation and provide a theoretical reference for blue flower molecular breeding.
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Affiliation(s)
- Min Li
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (M.L.); (Y.C.); (H.Y.); (X.K.)
| | - Yuting Cao
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (M.L.); (Y.C.); (H.Y.); (X.K.)
| | - Biswojit Debnath
- Department of Horticulture, Sylhet Agricultural University, Sylhet 3100, Bangladesh;
| | - Hongjuan Yang
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (M.L.); (Y.C.); (H.Y.); (X.K.)
| | - Xiaohua Kui
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (M.L.); (Y.C.); (H.Y.); (X.K.)
| | - Dongliang Qiu
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (M.L.); (Y.C.); (H.Y.); (X.K.)
- Correspondence: ; Tel.: +86-136-0594-8966
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12
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Ohshima S, Zhang P, Kume H, Deng C, Miyashita A, Kobayashi S, Okada H, Minami T, Kado S, Adulsiriswad P, Qiu D, Luo M, Matoike R, Suzuki T, Konoshima S, Mizuuchi T, Nagasaki K. Development of a multi-channel 320 GHz interferometer for high density plasma measurement in Heliotron J. Rev Sci Instrum 2021; 92:053519. [PMID: 34243360 DOI: 10.1063/5.0043581] [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] [Subscribe] [Scholar Register] [Received: 01/09/2021] [Accepted: 04/12/2021] [Indexed: 06/13/2023]
Abstract
We report the development of a new interferometer with two stable, high-power, 320 GHz solid-state sources in Heliotron J. A heterodyne Michelson interferometer optical scheme is employed. Two solid-state oscillators are utilized as sources with a fixed frequency at 320 GHz and frequency tunable of 312-324 GHz. Quasi-optical techniques are used for beam transmission. The beam is elongated in the vertical direction with two off-axis parabolic mirrors and injected into the plasma as a sheet beam for the multi-channel measurement (>5 ch.). Passing through the plasma, the beam is reflected at a retroreflector-array installed at the vacuum chamber wall. The retroreflector-array is a bunch of retroreflector structures, which can suppress the beam refraction caused by plasma without much space inside a vacuum chamber unlike a single retroreflector and can facilitate the system design. The source, detectors, and the retroreflector-array are tested to evaluate their basic performance on a tabletop experiment.
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Affiliation(s)
- S Ohshima
- Institute of Advanced Energy, Kyoto University, Kyoto 611-0011, Japan
| | - P Zhang
- Graduate School of Energy Science, Kyoto University, Kyoto 611-0011, Japan
| | - H Kume
- Graduate School of Energy Science, Kyoto University, Kyoto 611-0011, Japan
| | - C Deng
- University of California, Los Angeles, Los Angeles, California 90095-1594, USA
| | - A Miyashita
- Graduate School of Energy Science, Kyoto University, Kyoto 611-0011, Japan
| | - S Kobayashi
- Institute of Advanced Energy, Kyoto University, Kyoto 611-0011, Japan
| | - H Okada
- Graduate School of Energy Science, Kyoto University, Kyoto 611-0011, Japan
| | - T Minami
- Graduate School of Energy Science, Kyoto University, Kyoto 611-0011, Japan
| | - S Kado
- Graduate School of Energy Science, Kyoto University, Kyoto 611-0011, Japan
| | - P Adulsiriswad
- Graduate School of Energy Science, Kyoto University, Kyoto 611-0011, Japan
| | - D Qiu
- Graduate School of Energy Science, Kyoto University, Kyoto 611-0011, Japan
| | - M Luo
- Graduate School of Energy Science, Kyoto University, Kyoto 611-0011, Japan
| | - R Matoike
- Graduate School of Energy Science, Kyoto University, Kyoto 611-0011, Japan
| | - T Suzuki
- Graduate School of Energy Science, Kyoto University, Kyoto 611-0011, Japan
| | - S Konoshima
- Institute of Advanced Energy, Kyoto University, Kyoto 611-0011, Japan
| | - T Mizuuchi
- Institute of Advanced Energy, Kyoto University, Kyoto 611-0011, Japan
| | - K Nagasaki
- Institute of Advanced Energy, Kyoto University, Kyoto 611-0011, Japan
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13
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Lin W, Wang J, Xu X, Wu Y, Qiu D, He B, Sarsaiya S, Ma X, Chen J. Rapid propagation in vitro and accumulation of active substances of endangered Dendrobium cariniferum Rchb. f. Bioengineered 2020; 11:386-396. [PMID: 32172675 PMCID: PMC7161565 DOI: 10.1080/21655979.2020.1739406] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Dendrobium cariniferum is a valuable ornamental and medicinal plant rich with polysaccharides, alkaloid, and other bioactive compounds, which are potential raw materials for pharmacological utilization. In this study, an efficient protocol for the rapid propagation of D. cariniferum was developed. By using the tissue culture protocol, the effects of pH, hormone combinations, temperatures, light intensity, culture time protocorm proliferation, seedlings rooting, and accumulation of biomass with bioactive compounds were investigated. The experiments showed that the medium [1/2 MS + activated carbon1.0 g/L+ agar strip 7.5 g/L + sucrose 25 g/L] effectively promoted the germination of D. cariniferum seeds. The optimal culture conditions were found at pH 5.7, temperature 23 ± 2°C, and light intensity of 1000 Lx in the protocorm proliferation stage. Adding 1.5 g/L peptone in the medium effectively promoted the seedling rooting. The optimal culture conditions for accumulation of bioactive compounds (polysaccharides and alkaloids) of seedlings were found at temperature of 25 ± 2°C, light intensity of 1500–2000 Lx after the 60-day (d). Our study constructed a rapid propagation system in vitro for D. cariniferum, as well as the methods for efficient accumulation of active substances in seedling culture, which will serve as guidance for industrial production of D. cariniferum seedlings for both medicinal raw materials and ornamental plants. In addition, our study provided a new idea that we can directly use the high bioactive compound seedlings to extract medicinal components in industry conditions without transferring to the field.
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Affiliation(s)
- Wei Lin
- FAFU and UIUC-SIB Joint Center for Genomics and Biotechnology, the Key Laboratory of National Forestry and Grassland Administration for Orchid Conservation and Utilization (Fuzhou), College of Horticulture, College of Food Science, College of Forestry, Fujian Agriculture and Forestry University, Fuzhou, China.,Bioresource Institute for Healthy Utilization, Zunyi Medical University, Zunyi, China
| | - Jingjing Wang
- FAFU and UIUC-SIB Joint Center for Genomics and Biotechnology, the Key Laboratory of National Forestry and Grassland Administration for Orchid Conservation and Utilization (Fuzhou), College of Horticulture, College of Food Science, College of Forestry, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Xiuming Xu
- FAFU and UIUC-SIB Joint Center for Genomics and Biotechnology, the Key Laboratory of National Forestry and Grassland Administration for Orchid Conservation and Utilization (Fuzhou), College of Horticulture, College of Food Science, College of Forestry, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Yuhan Wu
- FAFU and UIUC-SIB Joint Center for Genomics and Biotechnology, the Key Laboratory of National Forestry and Grassland Administration for Orchid Conservation and Utilization (Fuzhou), College of Horticulture, College of Food Science, College of Forestry, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Dongliang Qiu
- FAFU and UIUC-SIB Joint Center for Genomics and Biotechnology, the Key Laboratory of National Forestry and Grassland Administration for Orchid Conservation and Utilization (Fuzhou), College of Horticulture, College of Food Science, College of Forestry, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Bizhu He
- FAFU and UIUC-SIB Joint Center for Genomics and Biotechnology, the Key Laboratory of National Forestry and Grassland Administration for Orchid Conservation and Utilization (Fuzhou), College of Horticulture, College of Food Science, College of Forestry, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Surendra Sarsaiya
- Bioresource Institute for Healthy Utilization, Zunyi Medical University, Zunyi, China
| | - Xiaokai Ma
- FAFU and UIUC-SIB Joint Center for Genomics and Biotechnology, the Key Laboratory of National Forestry and Grassland Administration for Orchid Conservation and Utilization (Fuzhou), College of Horticulture, College of Food Science, College of Forestry, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Jishuang Chen
- Bioresource Institute for Healthy Utilization, Zunyi Medical University, Zunyi, China
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14
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Yang H, Li M, Kui X, Sun Y, Li JA, Qiu D. Comparative Studies on the Quality and Lycopene Content of Pomelo ( Citrus grandis Osbeck) Cultivars. Nat Prod Commun 2020. [DOI: 10.1177/1934578x20953290] [Citation(s) in RCA: 3] [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: 11/15/2022] Open
Abstract
Three cultivars of pomelo “Guanximiyou” (GX) and its variants “Hongroumiyou” (HR) and “Sanhongmiyou” (SH) were selected as experimental materials to evaluate the quality and edible value of the fruit. In this study, the fruit quality and lycopene contents were investigated. The results show that among the 3 cultivars used, the contents of soluble solids, vitamin C, and total phenol in the juice sac of SH were the highest, followed by HR and GX. SH has the largest fruit shape index, soluble sugar content: GX > HR > SH, and titratable acid content: GX < HR < SH. From our findings, the content of lycopene was the highest in SH, followed by HR and GX. SH has the greatest potential for production due to its appreciable content of lycopene and fruit quality.
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Affiliation(s)
- Hongjuan Yang
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Min Li
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Xiaohua Kui
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Yueting Sun
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Jian-an Li
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Dongliang Qiu
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, China
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15
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Debnath B, Li M, Liu S, Pan T, Ma C, Qiu D. Melatonin-mediate acid rain stress tolerance mechanism through alteration of transcriptional factors and secondary metabolites gene expression in tomato. Ecotoxicol Environ Saf 2020; 200:110720. [PMID: 32470680 DOI: 10.1016/j.ecoenv.2020.110720] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [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: 09/19/2019] [Revised: 04/27/2020] [Accepted: 05/03/2020] [Indexed: 05/03/2023]
Abstract
Acid rain is a widespread environmental issue intensely affecting normal plant growth of crops. Melatonin is well known pleiotropic molecule which improves abiotic and biotic stress tolerance of plants through physiological and molecular mediation. However, the impact of exogenous melatonin on molecular activities under acid rain conditions in plants has never been studied. The objective of the study is to expose the possible role of exogenous melatonin on physiological and molecular changes against acid rain stress in tomato. Transcriptome profile through RNA-sequence analysis identified 1228, 1120 and 1537 differentially expressed genes (DEGs) in control plant (Ctr) vs simulated acid rain stressed plant (P25) comparison, control plant vs melatonin treatment in simulated acid rain stressed plant (P25M) comparison and P25 vs P25M comparison, respectively. Among them, 152 differentially expressed genes (DEGs) were commonly expressed and the expression of secondary metabolites related gene was noticeably observed in all comparison. Moreover, transcript families such as ERF, WRKY, MYB and bZIP related gene accounted more in all treatment comparison. The RNA-sequence and qPCR results indicated that exogenous melatonin is closely associated with acid rain stress moderator and might be involved in alteration of differentially expressed genes (DEGs), biosynthesis of plant secondary metabolites and transcriptional factor encoding genes expression which might have potential application against environmental hazardous conditions.
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Affiliation(s)
- Biswojit Debnath
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, Fujian, 350002, China; Department of Horticulture, Sylhet Agricultural University, Sylhet, 3100, Bangladesh
| | - Min Li
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, Fujian, 350002, China
| | - Shuang Liu
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, Fujian, 350002, China
| | - Tengfei Pan
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, Fujian, 350002, China
| | - Cuilan Ma
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, Fujian, 350002, China
| | - Dongliang Qiu
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, Fujian, 350002, China.
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16
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Dehkharghani S, Qiu D. MR Thermometry in Cerebrovascular Disease: Physiologic Basis, Hemodynamic Dependence, and a New Frontier in Stroke Imaging. AJNR Am J Neuroradiol 2020; 41:555-565. [PMID: 32139425 DOI: 10.3174/ajnr.a6455] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Accepted: 01/02/2020] [Indexed: 01/20/2023]
Abstract
The remarkable temperature sensitivity of the brain is widely recognized and has been studied for its role in the potentiation of ischemic and other neurologic injuries. Pyrexia frequently complicates large-vessel acute ischemic stroke and develops commonly in critically ill neurologic patients; the profound sensitivity of the brain even to minor intraischemic temperature changes, together with the discovery of brain-to-systemic as well as intracerebral temperature gradients, has thus compelled the exploration of cerebral thermoregulation and uncovered its immutable dependence on cerebral blood flow. A lack of pragmatic and noninvasive tools for spatially and temporally resolved brain thermometry has historically restricted empiric study of cerebral temperature homeostasis; however, MR thermometry (MRT) leveraging temperature-sensitive nuclear magnetic resonance phenomena is well-suited to bridging this long-standing gap. This review aims to introduce the reader to the following: 1) fundamental aspects of cerebral thermoregulation, 2) the physical basis of noninvasive MRT, and 3) the physiologic interdependence of cerebral temperature, perfusion, metabolism, and viability.
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Affiliation(s)
- S Dehkharghani
- From the Department of Radiology (S.D.), New York University Langone Health, New York, New York
| | - D Qiu
- Department of Radiology (D.Q.), Emory University Hospital, Atlanta, Georgia
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17
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Wang Y, Qin X, Chen Y, Xing J, Gao J, Qiu D. Seroprevalence of toxoplasma gondii infection in goats in the five northwestern provinces of China. ARQ BRAS MED VET ZOO 2020. [DOI: 10.1590/1678-4162-11428] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Affiliation(s)
| | - X. Qin
- Liaocheng University, China
| | | | | | | | - D. Qiu
- Tarim University, China; Huazhong Agricultural University, China
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18
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Li Q, Luo H, Peng H, Zhong M, Liu X, Qiu D, Yang H, He Y, Li C, Yin L, Huang X, Tian X, He G, Wang Y, Jin F. Plan Quality Evaluation and Preliminary Application of a Novel Plan Difficulty Index in Radiotherapy of Lung Cancer. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.850] [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: 10/26/2022]
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Qiu Z, Chen G, Qiu D. Pruning and dormancy breaking make two sustainable grape-cropping productions in a protected environment possible without overlap in a single year. PeerJ 2019; 7:e7412. [PMID: 31396448 PMCID: PMC6681797 DOI: 10.7717/peerj.7412] [Citation(s) in RCA: 4] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2019] [Accepted: 07/04/2019] [Indexed: 11/20/2022] Open
Abstract
In table grape production, protected cultivation in a vineyard in different regions and climates is currently a commonly used practice. The aims of this study were to provide key approaches to sustainably produce two crops of grape without overlap under protected environment in a single year. Spraying the degreening chemicals 400 mg/L ethephon +0.4% sulfur at 4 weeks of vine nutrient restoration after the harvest of the summer crop resulted in the highest percentage of sprouting inflorescence. The retention of 7–10 buds in the base shoot results in the high percentage of sprouting inflorescence. Bud breaking chemicals with 2.5% hydrogen cyanamide+2.0% Baoguoliang +0.02% Shenzhonggen significantly led to sprout inflorescence more efficiently. Cluster and fruit weights of the winter crop weighed significantly less than those of the summer crop. However, the contents of total soluble sugar and titratable acidity were higher than those of the summer crop. The anthocyanin content in the peel of the winter fruit was significantly higher than that in the summer fruit. The yield of the winter crop is controlled by the yield of the summer fruit. To maintain the stability of the two crops for one year, the ratio of yield in the winter to the summer should be controlled from 2:5 to 3:5 to ensure the sustainable production of two crops without overlap for ‘Summer Black’ grape. These results may help grape growers to overcome the impacts of rainy and hot climates with the help of protected facilities, and it could enable the use of solar radiation and heat resources in subtropical and tropical areas.
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Affiliation(s)
- Zhipeng Qiu
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, Fujian, China.,Xiamen Lunong Agricultural Science and Technology Co.Ltd, Xiamen, Fujian, China
| | | | - Dongliang Qiu
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, Fujian, China
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20
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Hussain M, Debnath B, Qasim M, Bamisile BS, Islam W, Hameed MS, Wang L, Qiu D. Role of Saponins in Plant Defense Against Specialist Herbivores. Molecules 2019; 24:E2067. [PMID: 31151268 PMCID: PMC6600540 DOI: 10.3390/molecules24112067] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Revised: 05/25/2019] [Accepted: 05/27/2019] [Indexed: 11/25/2022] Open
Abstract
The diamondback moth (DBM), Plutella xylostella (Lepidoptera: Plutellidae) is a very destructive crucifer-specialized pest that has resulted in significant crop losses worldwide. DBM is well attracted to glucosinolates (which act as fingerprints and essential for herbivores in host plant recognition) containing crucifers such as wintercress, Barbarea vulgaris (Brassicaceae) despite poor larval survival on it due to high-to-low concentration of saponins and generally to other plants in the genus Barbarea. B. vulgaris build up resistance against DBM and other herbivorous insects using glucosinulates which are used in plant defense. Aside glucosinolates, Barbarea genus also contains triterpenoid saponins, which are toxic to insects and act as feeding deterrents for plant specialist herbivores (such as DBM). Previous studies have found interesting relationship between the host plant and secondary metabolite contents, which indicate that attraction or resistance to specialist herbivore DBM, is due to higher concentrations of glucosinolates and saponins in younger leaves in contrast to the older leaves of Barbarea genus. As a response to this phenomenon, herbivores as DBM has developed a strategy of defense against these plant biochemicals. Because there is a lack of full knowledge in understanding bioactive molecules (such as saponins) role in plant defense against plant herbivores. Thus, in this review, we discuss the role of secondary plant metabolites in plant defense mechanisms against the specialist herbivores. In the future, trials by plant breeders could aim at transferring these bioactive molecules against herbivore to cash crops.
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Affiliation(s)
- Mubasher Hussain
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 35002, China.
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
- College of Plant Protection, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
- Key Laboratory of Integrated Pest Management for Fujian-Taiwan Crops, Ministry of Agriculture, Fuzhou 350002, China.
- Key Laboratory of Biopesticide and Chemical Biology, Ministry of Education, Fuzhou 350002, China.
- Institute of Applied Ecology and Research Centre for Biodiversity and Eco-Safety, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
| | - Biswojit Debnath
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 35002, China.
| | - Muhammad Qasim
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
- Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects, Institute of Insect Science, Zhejiang University, Hangzhou 3100058, China.
| | - Bamisope Steve Bamisile
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
- College of Plant Protection, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
- Key Laboratory of Biopesticide and Chemical Biology, Ministry of Education, Fuzhou 350002, China.
- Institute of Applied Ecology and Research Centre for Biodiversity and Eco-Safety, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
| | - Waqar Islam
- College of Plant Protection, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
- College of Geography, Fujian Normal University, Fuzhou 350007, China.
| | - Muhammad Salman Hameed
- College of Plant Protection, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
- Institute of Applied Ecology and Research Centre for Biodiversity and Eco-Safety, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
- Faculty of Agricultural Sciences, Department of Plant Protection, Ghazi University, Dera Ghazi Khan 32200, Pakistan.
| | - Liande Wang
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
- College of Plant Protection, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
- Key Laboratory of Integrated Pest Management for Fujian-Taiwan Crops, Ministry of Agriculture, Fuzhou 350002, China.
- Key Laboratory of Biopesticide and Chemical Biology, Ministry of Education, Fuzhou 350002, China.
- Institute of Applied Ecology and Research Centre for Biodiversity and Eco-Safety, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
| | - Dongliang Qiu
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 35002, China.
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Debnath B, Islam W, Li M, Sun Y, Lu X, Mitra S, Hussain M, Liu S, Qiu D. Melatonin Mediates Enhancement of Stress Tolerance in Plants. Int J Mol Sci 2019; 20:E1040. [PMID: 30818835 PMCID: PMC6429401 DOI: 10.3390/ijms20051040] [Citation(s) in RCA: 91] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2019] [Revised: 02/18/2019] [Accepted: 02/22/2019] [Indexed: 02/07/2023] Open
Abstract
Melatonin is a multifunctional signaling molecule, ubiquitously distributed in different parts of plants and responsible for stimulating several physiological responses to adverse environmental conditions. In the current review, we showed that the biosynthesis of melatonin occurred in plants by themselves, and accumulation of melatonin fluctuated sharply by modulating its biosynthesis and metabolic pathways under stress conditions. Melatonin, with its precursors and derivatives, acted as a powerful growth regulator, bio-stimulator, and antioxidant, which delayed leaf senescence, lessened photosynthesis inhibition, and improved redox homeostasis and the antioxidant system through a direct scavenging of reactive oxygen species (ROS) and reactive nitrogen species (RNS) under abiotic and biotic stress conditions. In addition, exogenous melatonin boosted the growth, photosynthetic, and antioxidant activities in plants, confirming their tolerances against drought, unfavorable temperatures, salinity, heavy metals, acid rain, and pathogens. However, future research, together with recent advancements, would support emerging new approaches to adopt strategies in overcoming the effect of hazardous environments on crops and may have potential implications in expanding crop cultivation against harsh conditions. Thus, farming communities and consumers will benefit from elucidating food safety concerns.
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Affiliation(s)
- Biswojit Debnath
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China.
- Department of Horticulture, Sylhet Agricultural University, Sylhet 3100, Bangladesh.
| | - Waqar Islam
- College of Geographical Sciences, Fujian Normal University, Fuzhou, Fujian 350007, China.
| | - Min Li
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China.
| | - Yueting Sun
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China.
| | - Xiaocao Lu
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China.
| | - Sangeeta Mitra
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China.
| | - Mubasher Hussain
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China.
| | - Shuang Liu
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China.
| | - Dongliang Qiu
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China.
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Hussain M, Akutse KS, Lin Y, Chen S, Huang W, Zhang J, Idrees A, Qiu D, Wang L. Susceptibilities of Candidatus Liberibacter asiaticus-infected and noninfected Diaphorina citri to entomopathogenic fungi and their detoxification enzyme activities under different temperatures. Microbiologyopen 2018; 7:e00607. [PMID: 29577643 PMCID: PMC6291790 DOI: 10.1002/mbo3.607] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Revised: 01/18/2018] [Accepted: 01/19/2018] [Indexed: 12/22/2022] Open
Abstract
Some entomopathogenic fungi species, Isaria fumosorosea, and Hirsutella citriformis were found to be efficient against the Asian citrus psyllid, Diaphorina citri Kuwayama (Hemiptera: Liviidae). However, the susceptibility to these fungi increases when the psyllid infected with Candidatus Liberibacter asiaticus (Las), which is transmitted by D. citri and causes citrus greening disease. In this study, we examined the Las-infected and Las-uninfected D. citri susceptibility to entomopathogenic fungi at different temperature regimes (5-40°C). When D. citri adults exposed to cold temperature (5°C), they showed less susceptibility to entomopathogenic fungi as compared with control (27°C). Irrespective of infection with Las, a significantly positive correlation was observed between temperature and percentage mortality caused by different isolates of I. fumosorosea, 3A Ifr, 5F Ifr, PS Ifr, and H. citriformis isolates, HC3D and 2H. In contrast, a significantly negative correlation was found between temperature and percentage mortality for 3A Ifr for both Las-infected and Las-uninfected psyllids. Detoxification enzymes, Glutathione S-transferase levels in D. citri showed a negative correlation, whereas cytochrome P450 and general esterase levels were not correlated with changes in temperature. These findings revealed that detoxification enzymes and general esterase levels are not correlated with altered susceptibility to entomopathogenic fungi at the different temperature regimes. Conclusively, temperature fluctuations tested appear to be a significant factor impacting the management strategies of D. citri using entomopathogenic fungi.
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Affiliation(s)
- Mubasher Hussain
- Plant Protection CollegeFujian Agriculture and Forestry UniversityFuzhouChina
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan CropsFujian Agriculture and Forestry UniversityFuzhou350002China
- College of HorticultureFujian Agriculture and Forestry UniversityFuzhouChina
- Key Laboratory of Biopesticide and Chemical BiologyMinistry of EducationFuzhouChina
| | - Komivi Senyo Akutse
- Plant Protection CollegeFujian Agriculture and Forestry UniversityFuzhouChina
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan CropsFujian Agriculture and Forestry UniversityFuzhou350002China
- Key Laboratory of Biopesticide and Chemical BiologyMinistry of EducationFuzhouChina
- International Centre of Insect Ecology and PhysiologyNairobiKenya
| | - Yongwen Lin
- Plant Protection CollegeFujian Agriculture and Forestry UniversityFuzhouChina
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan CropsFujian Agriculture and Forestry UniversityFuzhou350002China
- Key Laboratory of Biopesticide and Chemical BiologyMinistry of EducationFuzhouChina
| | - Shiman Chen
- Plant Protection CollegeFujian Agriculture and Forestry UniversityFuzhouChina
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan CropsFujian Agriculture and Forestry UniversityFuzhou350002China
- Key Laboratory of Biopesticide and Chemical BiologyMinistry of EducationFuzhouChina
| | - Wei Huang
- Plant Protection CollegeFujian Agriculture and Forestry UniversityFuzhouChina
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan CropsFujian Agriculture and Forestry UniversityFuzhou350002China
- Key Laboratory of Biopesticide and Chemical BiologyMinistry of EducationFuzhouChina
| | - Jinguan Zhang
- Plant Protection CollegeFujian Agriculture and Forestry UniversityFuzhouChina
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan CropsFujian Agriculture and Forestry UniversityFuzhou350002China
- Key Laboratory of Biopesticide and Chemical BiologyMinistry of EducationFuzhouChina
| | - Atif Idrees
- Plant Protection CollegeFujian Agriculture and Forestry UniversityFuzhouChina
- Institute of Beneficial InsectsFujian Agriculture and Forestry UniversityFuzhouChina
| | - Dongliang Qiu
- College of HorticultureFujian Agriculture and Forestry UniversityFuzhouChina
| | - Liande Wang
- Plant Protection CollegeFujian Agriculture and Forestry UniversityFuzhouChina
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan CropsFujian Agriculture and Forestry UniversityFuzhou350002China
- Key Laboratory of Biopesticide and Chemical BiologyMinistry of EducationFuzhouChina
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Mitra S, Irshad M, Debnath B, Lu X, Li M, Dash CK, Rizwan HM, Qiu Z, Qiu D. Effect of vineyard soil variability on chlorophyll fluorescence, yield and quality of table grape as influenced by soil moisture, grown under double cropping system in protected condition. PeerJ 2018; 6:e5592. [PMID: 30202662 PMCID: PMC6128259 DOI: 10.7717/peerj.5592] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Accepted: 08/16/2018] [Indexed: 12/22/2022] Open
Abstract
Environmental factors greatly influence grape quality. Among them, the effect of within-vineyard variability of soil in relation to soil moisture on table grape under protected condition has rarely been studied. In this present research, we investigated the influence of soil variability, in relation with soil moisture on chlorophyll fluorescence, yield and quality attributes of the “Summer Black” (Vitis vinifera L. × V. labruscana L.) table grape, popularly grown under double cropping system in protected covering in the southern part of China. The vineyard was divided vertically into three sites (lower, middle and upper, 192, 202 and 212 m above sea level, respectively) and data on soil moisture and other yield and quality parameters were recorded. Among the three vineyard sites, middle site resulted in higher yield compared to the upper and lower sites during winter and summer cropping cycles. However, compared to regular summer cycle, winter cycle provided grapevines with higher quality attributes. Polyphasic OJIP fluorescence transient exhibited a considerable increase in fluorescence intensity at J, I and P phase in the upper and middle sites compared to the lower site due to variation in soil moisture in both seasons. Values of fluorescence parameters including minimal fluorescence, relative variable fluorescence at phase J and I, the maximal quantum yield of photosystem II were also influenced by soil moisture in different sites. Different sites also exhibited a significant difference in total phenolics, flavonoid, antioxidant activity and individual anthocyanin which was influenced by available soil moisture. The present study shows that chlorophyll fluorescence OJIP transient can be used as a sensitive indicator to determine the moisture stress in grape grown in a varied soil. Double cropping proved to be a powerful technique to improve the fruit quality. This result may be useful for the table grape growers to better utilize the vineyard soil variability with water management to get higher yield and quality table grape under protected condition.
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Affiliation(s)
- Sangeeta Mitra
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, Fujian, China
| | - Muhammad Irshad
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, Fujian, China
| | - Biswojit Debnath
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, Fujian, China
| | - Xiaocao Lu
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, Fujian, China
| | - Min Li
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, Fujian, China
| | - Chandra Kanta Dash
- College of Plant Protection, Fujian Agriculture and Forestry University, Fuzhou, Fujian, China
| | - Hafiz Muhammad Rizwan
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, Fujian, China
| | - Zhipeng Qiu
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, Fujian, China.,Xiamen Lunong Agricultural Science and Technology Co., Ltd, Xiamen, Fujian, China
| | - Dongliang Qiu
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, Fujian, China
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Debnath B, Hussain M, Irshad M, Mitra S, Li M, Liu S, Qiu D. Exogenous Melatonin Mitigates Acid Rain Stress to Tomato Plants through Modulation of Leaf Ultrastructure, Photosynthesis and Antioxidant Potential. Molecules 2018; 23:molecules23020388. [PMID: 29439491 PMCID: PMC6017902 DOI: 10.3390/molecules23020388] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2018] [Revised: 02/09/2018] [Accepted: 02/10/2018] [Indexed: 12/23/2022] Open
Abstract
Acid rain (AR) is a serious global environmental issue causing physio-morphological changes in plants. Melatonin, as an indoleamine molecule, has been known to mediate many physiological processes in plants under different kinds of environmental stress. However, the role of melatonin in acid rain stress tolerance remains inexpressible. This study investigated the possible role of melatonin on different physiological responses involving reactive oxygen species (ROS) metabolism in tomato plants under simulated acid rain (SAR) stress. SAR stress caused the inhibition of growth, damaged the grana lamella of the chloroplast, photosynthesis, and increased accumulation of ROS and lipid peroxidation in tomato plants. To cope the detrimental effect of SAR stress, plants under SAR condition had increased both enzymatic and nonenzymatic antioxidant substances compared with control plants. But such an increase in the antioxidant activities were incapable of inhibiting the destructive effect of SAR stress. Meanwhile, melatonin treatment increased SAR-stress tolerance by repairing the grana lamella of the chloroplast, improving photosynthesis and antioxidant activities compared with those in SAR-stressed plants. However, these possible effects of melatonin are dependent on concentration. Moreover, our study suggests that 100-μM melatonin treatment improved the SAR-stress tolerance by increasing photosynthesis and ROS scavenging antioxidant activities in tomato plants.
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Affiliation(s)
- Biswojit Debnath
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
- Department of Horticulture, Sylhet Agricultural University, Sylhet 3100, Bangladesh.
| | - Mubasher Hussain
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
| | - Muhammad Irshad
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
| | - Sangeeta Mitra
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
| | - Min Li
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
| | - Shuang Liu
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
| | - Dongliang Qiu
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
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25
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Saindane AM, Qiu D, Oshinski JN, Newman NJ, Biousse V, Bruce BB, Holbrook JF, Dale BM, Zhong X. Noninvasive Assessment of Intracranial Pressure Status in Idiopathic Intracranial Hypertension Using Displacement Encoding with Stimulated Echoes (DENSE) MRI: A Prospective Patient Study with Contemporaneous CSF Pressure Correlation. AJNR Am J Neuroradiol 2018; 39:311-316. [PMID: 29284598 DOI: 10.3174/ajnr.a5486] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2017] [Accepted: 10/22/2017] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Intracranial pressure is estimated invasively by using lumbar puncture with CSF opening pressure measurement. This study evaluated displacement encoding with stimulated echoes (DENSE), an MR imaging technique highly sensitive to brain motion, as a noninvasive means of assessing intracranial pressure status. MATERIALS AND METHODS Nine patients with suspected elevated intracranial pressure and 9 healthy control subjects were included in this prospective study. Controls underwent DENSE MR imaging through the midsagittal brain. Patients underwent DENSE MR imaging followed immediately by lumbar puncture with opening pressure measurement, CSF removal, closing pressure measurement, and immediate repeat DENSE MR imaging. Phase-reconstructed images were processed producing displacement maps, and pontine displacement was calculated. Patient data were analyzed to determine the effects of measured pressure on pontine displacement. Patient and control data were analyzed to assess the effects of clinical status (pre-lumbar puncture, post-lumbar puncture, or control) on pontine displacement. RESULTS Patients demonstrated imaging findings suggesting chronically elevated intracranial pressure, whereas healthy control volunteers demonstrated no imaging abnormalities. All patients had elevated opening pressure (median, 36.0 cm water), decreased by the removal of CSF to a median closing pressure of 17.0 cm water. Patients pre-lumbar puncture had significantly smaller pontine displacement than they did post-lumbar puncture after CSF pressure reduction (P = .001) and compared with controls (P = .01). Post-lumbar puncture patients had statistically similar pontine displacements to controls. Measured CSF pressure in patients pre- and post-lumbar puncture correlated significantly with pontine displacement (r = 0.49; P = .04). CONCLUSIONS This study establishes a relationship between pontine displacement from DENSE MR imaging and measured pressure obtained contemporaneously by lumbar puncture, providing a method to noninvasively assess intracranial pressure status in idiopathic intracranial hypertension.
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Affiliation(s)
- A M Saindane
- From the Departments of Radiology and Imaging Sciences (A.M.S., D.Q., J.N.O., J.F.H.)
| | - D Qiu
- From the Departments of Radiology and Imaging Sciences (A.M.S., D.Q., J.N.O., J.F.H.)
| | - J N Oshinski
- From the Departments of Radiology and Imaging Sciences (A.M.S., D.Q., J.N.O., J.F.H.)
- Department of Biomedical Engineering (J.N.O.), Georgia Institute of Technology, Atlanta, Georgia
| | - N J Newman
- Ophthalmology (N.J.N., V.B., B.B.B.), Emory University, Atlanta, Georgia
| | - V Biousse
- Ophthalmology (N.J.N., V.B., B.B.B.), Emory University, Atlanta, Georgia
| | - B B Bruce
- Ophthalmology (N.J.N., V.B., B.B.B.), Emory University, Atlanta, Georgia
| | - J F Holbrook
- From the Departments of Radiology and Imaging Sciences (A.M.S., D.Q., J.N.O., J.F.H.)
| | - B M Dale
- MR R&D Collaborations (B.M.D.), Siemens Healthineers, Apex, North Carolina
| | - X Zhong
- MR R&D Collaborations (X.Z.), Siemens Healthineers, Atlanta, Georgia
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Wang G, Qiu D, Yang H, Liu W. The prevalence and odds of depression in patients with vitiligo: a meta-analysis. J Eur Acad Dermatol Venereol 2018; 32:1343-1351. [PMID: 29222958 DOI: 10.1111/jdv.14739] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2017] [Accepted: 11/17/2017] [Indexed: 12/17/2022]
Abstract
OBJECTIVE The objective of this study was to provide a pooled estimate of the prevalence and odds of depression in patients with vitiligo. METHODS A systematic literature search of Medline, Embase and Cochrane library databases was conducted. The proportions and mean questionnaire values for depression were pooled according to different evaluation methods. In controlled studies, odds ratio and standardized mean differences compared depression in vitiligo patients with healthy controls. RESULTS One thousand nine hundred and sixty-five patients were identified from 20 eligible cohorts to be included in the present meta-analysis review. Sample sizes ranged from 30 to 308 for each analysis. The pooled prevalence of depression across 17 unique populations (n = 1711) was 29% (95% CI 20-39). The prevalence of clinical depression was 8% (95% CI 2%-14%) using Diagnostic and Statistical Manual of Mental Disorders IV or International Classification of Diseases codes-10, and the prevalence of depressive symptoms was 33% (95% CI 23%-44%) using validated screening inventory and rating scales. Patient with vitiligo was 4.96 times more likely to display depression compared with controls. Subgroup analysis showed that the prevalence of depression in Asian and female patients with vitiligo was significantly higher than that in Caucasian and male ones. The pooled prevalence of depressive symptoms was higher (56%, 95% CI 0.5-0.62), and the heterogeneity was lowering cases with Hamilton Depression Rating Scale (HDRS) questionnaire when compared with other questionnaires. CONCLUSIONS This meta-analysis review indicates that the prevalence of depression is high in patients with vitiligo. The HDRS questionnaire may be the most sensitive tool for testing the depressive symptoms among patients with vitiligo.
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Affiliation(s)
- G Wang
- Department of Dermatology, The Chinese People's Liberation Army 404 Hospital, Weihai, China
| | - D Qiu
- Department of Dermatology, Central Hospital of Zibo, Zibo, China
| | - H Yang
- Department of Dermatology, The Chinese People's Liberation Army 404 Hospital, Weihai, China
| | - W Liu
- Department of Dermatology, The Chinese People's Liberation Army 404 Hospital, Weihai, China
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Fleischer CC, Wu J, Qiu D, Park SE, Nahab F, Dehkharghani S. The Brain Thermal Response as a Potential Neuroimaging Biomarker of Cerebrovascular Impairment. AJNR Am J Neuroradiol 2017; 38:2044-2051. [PMID: 28935624 DOI: 10.3174/ajnr.a5380] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [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] [Received: 01/17/2017] [Accepted: 07/09/2017] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Brain temperature is critical for homeostasis, relating intimately to cerebral perfusion and metabolism. Cerebral thermometry is historically challenged by the cost and invasiveness of clinical and laboratory methodologies. We propose the use of noninvasive MR thermometry in patients with cerebrovascular disease, hypothesizing the presence of a measurable brain thermal response reflecting the tissue hemodynamic state. MATERIALS AND METHODS Contemporaneous imaging and MR thermometry were performed in 10 patients (32-68 years of age) undergoing acetazolamide challenge for chronic, anterior circulation steno-occlusive disease. Cerebrovascular reactivity was calculated with blood oxygen level-dependent imaging and arterial spin-labeling methods. Brain temperature was calculated pre- and post-acetazolamide using previously established chemical shift thermometry. Mixed-effects models of the voxelwise relationships between the brain thermal response and cerebrovascular reactivity were computed, and the significance of model coefficients was determined with an F test (P < .05). RESULTS We observed significant, voxelwise quadratic relationships between cerebrovascular reactivity from blood oxygen level-dependent imaging and the brain thermal response (x coefficient = 0.052, P < .001; x2coefficient = 0.0068, P < .001) and baseline brain temperatures (x coefficient = 0.59, P = .008; x2 coefficient = -0.13, P < .001). A significant linear relationship was observed for the brain thermal response with cerebrovascular reactivity from arterial spin-labeling (P = .001). CONCLUSIONS The findings support the presence of a brain thermal response exhibiting complex but significant interactions with tissue hemodynamics, which we posit to reflect a relative balance of heat-producing versus heat-dissipating tissue states. The brain thermal response is a potential noninvasive biomarker for cerebrovascular impairment.
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Affiliation(s)
- C C Fleischer
- From the Department of Biomedical Engineering (C.C.F., S.-E.P.), Emory University and Georgia Institute of Technology, Atlanta, Georgia
- the Departments of Radiology and Imaging Sciences (C.C.F., J.W., D.Q., S.D.)
| | - J Wu
- the Departments of Radiology and Imaging Sciences (C.C.F., J.W., D.Q., S.D.)
| | - D Qiu
- the Departments of Radiology and Imaging Sciences (C.C.F., J.W., D.Q., S.D.)
| | - S-E Park
- From the Department of Biomedical Engineering (C.C.F., S.-E.P.), Emory University and Georgia Institute of Technology, Atlanta, Georgia
| | - F Nahab
- Neurology (F.N., S.D.)
- Pediatrics (F.N.), Emory University School of Medicine, Atlanta, Georgia
| | - S Dehkharghani
- the Departments of Radiology and Imaging Sciences (C.C.F., J.W., D.Q., S.D.)
- Neurology (F.N., S.D.)
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28
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Zheng S, Pan T, Ma C, Qiu D. Differential Gene Expression of Longan Under Simulated Acid Rain Stress. Bull Environ Contam Toxicol 2017; 98:726-731. [PMID: 28299408 DOI: 10.1007/s00128-017-2059-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [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: 06/26/2016] [Accepted: 03/01/2017] [Indexed: 06/06/2023]
Abstract
Differential gene expression profile was studied in Dimocarpus longan Lour. in response to treatments of simulated acid rain with pH 2.5, 3.5, and a control (pH 5.6) using differential display reverse transcription polymerase chain reaction (DDRT-PCR). Results showed that mRNA differential display conditions were optimized to find an expressed sequence tag (EST) related with acid rain stress. The potential encoding products had 80% similarity with a transcription initiation factor IIF of Gossypium raimondii and 81% similarity with a protein product of Theobroma cacao. This fragment is the transcription factor activated by second messenger substances in longan leaves after signal perception of acid rain.
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Affiliation(s)
- Shan Zheng
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Tengfei Pan
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Cuilan Ma
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Dongliang Qiu
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China.
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29
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Dehkharghani S, Fleischer CC, Qiu D, Yepes M, Tong F. Cerebral Temperature Dysregulation: MR Thermographic Monitoring in a Nonhuman Primate Study of Acute Ischemic Stroke. AJNR Am J Neuroradiol 2017; 38:712-720. [PMID: 28126752 DOI: 10.3174/ajnr.a5059] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [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] [Received: 08/30/2016] [Accepted: 11/06/2016] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Cerebral thermoregulation remains poorly understood. Temperature dysregulation is deeply implicated in the potentiation of cerebrovascular ischemia. We present a multiphasic, MR thermographic study in a nonhuman primate model of MCA infarction, hypothesizing detectable brain temperature disturbances and brain-systemic temperature decoupling. MATERIALS AND METHODS Three Rhesus Macaque nonhuman primates were sourced for 3-phase MR imaging: 1) baseline MR imaging, 2) 7-hour continuous MR imaging following minimally invasive, endovascular MCA stroke induction, and 3) poststroke day 1 MR imaging follow-up. MR thermometry was achieved by multivoxel spectroscopy (semi-localization by adiabatic selective refocusing) by using the proton resonance frequency chemical shift. The relationship of brain and systemic temperatures with time and infarction volumes was characterized by using a mixed-effects model. RESULTS Following MCA infarction, progressive cerebral hyperthermia was observed in all 3 subjects, significantly outpacing systemic temperature fluctuations. Highly significant associations were observed for systemic, hemispheric, and global brain temperatures (F-statistic, P = .0005 for all regressions) relative to the time from stroke induction. Significant differences in the relationship between temperature and time following stroke onset were detected when comparing systemic temperatures with ipsilateral (P = .007), contralateral (P = .004), and infarction core (P = .003) temperatures following multiple-comparisons correction. Significant associations were observed between infarction volumes and both systemic (P ≤ .01) and ipsilateral (P = .04) brain temperatures, but not contralateral brain temperature (P = .08). CONCLUSIONS Successful physiologic and continuous postischemic cerebral MR thermography was conducted and prescribed in a nonhuman primate infarction model to facilitate translatability. The results confirm hypothesized temperature disturbance and decoupling of physiologic brain-systemic temperature gradients. These findings inform a developing paradigm of brain thermoregulation and the applicability of brain temperature as a neuroimaging biomarker in CNS injury.
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Affiliation(s)
- S Dehkharghani
- From the Departments of Radiology and Imaging Sciences (S.D., D.Q., F.T.)
- Neurology (S.D., M.Y.), Emory University Hospital, Atlanta, Georgia
| | - C C Fleischer
- Department of Biomedical Engineering (C.C.F.), Emory University and Georgia Institute of Technology, Atlanta, Georgia
| | - D Qiu
- From the Departments of Radiology and Imaging Sciences (S.D., D.Q., F.T.)
| | - M Yepes
- Neurology (S.D., M.Y.), Emory University Hospital, Atlanta, Georgia
| | - F Tong
- From the Departments of Radiology and Imaging Sciences (S.D., D.Q., F.T.)
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30
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Yang F, Yang Y, Wang Q, Wang Z, Miao Q, Xiao X, Wei Y, Bian Z, Sheng L, Chen X, Qiu D, Fang J, Tang R, Gershwin ME, Ma X. The risk predictive values of UK-PBC and GLOBE scoring system in Chinese patients with primary biliary cholangitis: the additional effect of anti-gp210. Aliment Pharmacol Ther 2017; 45:733-743. [PMID: 28083929 DOI: 10.1111/apt.13927] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/07/2016] [Revised: 10/04/2016] [Accepted: 12/12/2016] [Indexed: 12/12/2022]
Abstract
BACKGROUND Adequate risk stratification is critical for the management of the patients with primary biliary cholangitis (PBC). The UK-PBC and GLOBE scoring systems for prognosis of PBC have been proposed recently, but have not been validated in Asian population. AIM To validate the UK-PBC and GLOBE scoring systems in Chinese patients for prognosis of PBC. To clarify the role of anti-gp210 as a biomarker, and to investigate whether anti-gp210 could affect the prognostic values of UK-PBC and GLOBE scoring systems. METHODS We retrospectively analysed 276 patients with PBC evaluated between September 2004 and May 2016, including 133 anti-gp210+ and 143 anti-gp210- patients. RESULTS The 5-year adverse outcome-free survivals of anti-gp210+ vs. anti-gp210- patients were 70% and 85%, respectively (P = 0.005). Cirrhosis (P = 0.001), albumin level ≤40 g/L (P = 0.011) and platelet count ≤153 × 109 (P < 0.001) had a superimposition effect on anti-gp210 antibody as a risk factor. Furthermore, long-term prognoses were evaluated using the UK-PBC and GLOBE scores. For UK-PBC scoring system, the area under receiver operating characteristic curve (AUROC) was 0.924 for all patients with PBC (n = 223), 0.940 for anti-gp210+ patients (n = 110) and 0.888 for anti-gp210- patients (n = 113). For GLOBE scoring system, the area under receiver operating characteristic curve was 0.901 for all patients with PBC (n = 223), 0.924 for anti-gp210+ patients (n = 110) and 0.848 for anti-gp210- patients (n = 113). UK-PBC score >0.0578 (P < 0.001, HR: 32.736, 95% CI: 11.368-94.267) and GLOBE score <0.850 (P < 0.001, HR: 18.763, 95% CI: 7.968-44.180) were associated with poorer outcomes in the whole cohort. CONCLUSIONS The UK-PBC and GLOBE scoring systems were good 5-year prognostic predictors in Chinese patients with PBC, especially in anti-gp210+ patients. As a biomarker, anti-gp210 antibody was associated with a more severe cholestatic manifestation and a worse long-term prognosis. The anti-gp210 antibody could be added to further optimise the UK-PBC and GLOBE scoring systems.
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Affiliation(s)
- F Yang
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, State Key Laboratory for Oncogenes and Related Genes, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Institute of Digestive Disease, Shanghai, China
| | - Y Yang
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, State Key Laboratory for Oncogenes and Related Genes, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Institute of Digestive Disease, Shanghai, China
| | - Q Wang
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, State Key Laboratory for Oncogenes and Related Genes, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Institute of Digestive Disease, Shanghai, China
| | - Z Wang
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, State Key Laboratory for Oncogenes and Related Genes, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Institute of Digestive Disease, Shanghai, China
| | - Q Miao
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, State Key Laboratory for Oncogenes and Related Genes, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Institute of Digestive Disease, Shanghai, China
| | - X Xiao
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, State Key Laboratory for Oncogenes and Related Genes, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Institute of Digestive Disease, Shanghai, China
| | - Y Wei
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, State Key Laboratory for Oncogenes and Related Genes, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Institute of Digestive Disease, Shanghai, China
| | - Z Bian
- Department of Gastroenterology and Hepatology, Nantong Institute of Liver Disease, Nantong Third People's Hospital, Nantong University, Jiangsu, China
| | - L Sheng
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, State Key Laboratory for Oncogenes and Related Genes, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Institute of Digestive Disease, Shanghai, China
| | - X Chen
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, State Key Laboratory for Oncogenes and Related Genes, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Institute of Digestive Disease, Shanghai, China
| | - D Qiu
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, State Key Laboratory for Oncogenes and Related Genes, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Institute of Digestive Disease, Shanghai, China
| | - J Fang
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, State Key Laboratory for Oncogenes and Related Genes, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Institute of Digestive Disease, Shanghai, China
| | - R Tang
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, State Key Laboratory for Oncogenes and Related Genes, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Institute of Digestive Disease, Shanghai, China
| | - M E Gershwin
- Division of Rheumatology, Allergy, and Clinical Immunology, University of California at Davis, Davis, CA, USA
| | - X Ma
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, State Key Laboratory for Oncogenes and Related Genes, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Institute of Digestive Disease, Shanghai, China
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Liu J, Yang H, Yin Z, Jiang X, Zhong H, Qiu D, Zhu F, Li R. Remodeling of the gut microbiota and structural shifts in Preeclampsia patients in South China. Eur J Clin Microbiol Infect Dis 2016; 36:713-719. [PMID: 27988814 DOI: 10.1007/s10096-016-2853-z] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2016] [Accepted: 11/22/2016] [Indexed: 12/13/2022]
Abstract
Preeclampsia (PE) is one of the pregnancy metabolic diseases. Since Gut microbiota play important roles in the hosts' metabolism, it is necessary to investigate the gut microbiota in PE patients, so that some intestinal dysbiosis might be detected as a biomarker for PE early diagnosis or as a target for intervention. One hundred subjects were categorized into four groups: 26 PE patients in late pregnancy, healthy individuals in early, middle, and late pregnancy (26/24/24 women). Gut microbiota were analyzed by sequencing the V4 region of the 16S rDNA gene using Illuminal MiSeq. Data were analyzed by multivariate statistics. Bacteroidetes was the dominant bacterium (47.57-52.35%) in the pregnant women in South China. Tenericutes increased while Verrucomicrobia almost disappeared in late pregnancy. In the PE patients, there was an overall increase in pathogenic bacteria, Clostridium perfringens (p = 0.03) and Bulleidia moorei (p = 0.00) but a reduction in probiotic bacteria Coprococcus catus (p = 0.03). Our research suggests that there is a significant structural shift of the gut microbiota in PE patients, which might be associated with the occurrence and development of the disease. However, further studies are required to understand the underlying mechanisms.
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Affiliation(s)
- J Liu
- The First Affiliate Hospital of Jinan University, Guangzhou, 510630, China
| | - H Yang
- Biomedical Translational Research Institute of Jinan University, Guangzhou, 510632, China
| | - Z Yin
- Biomedical Translational Research Institute of Jinan University, Guangzhou, 510632, China
| | - X Jiang
- Computer College of Central China Normal University, Wuhan, 430000, China
| | - H Zhong
- Biomedical Translational Research Institute of Jinan University, Guangzhou, 510632, China
| | - D Qiu
- The First Affiliate Hospital of Jinan University, Guangzhou, 510630, China
| | - F Zhu
- The First Affiliate Hospital of Jinan University, Guangzhou, 510630, China
| | - R Li
- The First Affiliate Hospital of Jinan University, Guangzhou, 510630, China.
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Wu J, Dehkharghani S, Nahab F, Allen J, Qiu D. The Effects of Acetazolamide on the Evaluation of Cerebral Hemodynamics and Functional Connectivity Using Blood Oxygen Level-Dependent MR Imaging in Patients with Chronic Steno-Occlusive Disease of the Anterior Circulation. AJNR Am J Neuroradiol 2016; 38:139-145. [PMID: 27758776 DOI: 10.3174/ajnr.a4973] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2016] [Accepted: 08/20/2016] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Measuring cerebrovascular reactivity with the use of vasodilatory stimuli, such as acetazolamide, is useful for chronic cerebrovascular steno-occlusive disease. The purpose of this study was to evaluate the effects of acetazolamide on the assessment of hemodynamic impairment and functional connectivity by using noninvasive resting-state blood oxygen level-dependent MR imaging. MATERIALS AND METHODS A 20-minute resting-state blood oxygen level-dependent MR imaging scan was acquired with infusion of acetazolamide starting at 5 minutes after scan initiation. A recently developed temporal-shift analysis technique was applied on blood oxygen level-dependent MR imaging data before and after acetazolamide infusion to identify regions with hemodynamic impairment, and the results were compared by using contrast agent-based DSC perfusion imaging as the reference standard. Functional connectivity was compared with and without correction on the signal by using information from temporal-shift analysis, before and after acetazolamide infusion. RESULTS Visually, temporal-shift analysis of blood oxygen level-dependent MR imaging data identified regions with compromised hemodynamics as defined by DSC, though performance deteriorated in patients with bilateral disease. The Dice similarity coefficient between temporal-shift and DSC maps was higher before (0.487 ± 0.150 by using the superior sagittal sinus signal as a reference for temporal-shift analysis) compared with after acetazolamide administration (0.384 ± 0.107) (P = .006, repeated-measures ANOVA). Functional connectivity analysis with temporal-shift correction identified brain network nodes that were otherwise missed. The accuracy of functional connectivity assessment decreased after acetazolamide administration (P = .015 for default mode network, repeated-measures ANOVA). CONCLUSIONS Temporal-shift analysis of blood oxygen level-dependent MR imaging can identify brain regions with hemodynamic compromise in relation to DSC among patients with chronic cerebrovascular disease. The use of acetazolamide reduces the accuracy of temporal-shift analysis and network connectivity evaluation.
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Affiliation(s)
- J Wu
- From the Departments of Radiology and Imaging Sciences (J.W., S.D., J.A., D.Q.)
| | - S Dehkharghani
- From the Departments of Radiology and Imaging Sciences (J.W., S.D., J.A., D.Q.)
| | - F Nahab
- Neurology (F.N.), Emory University School of Medicine, Atlanta, Georgia
| | - J Allen
- From the Departments of Radiology and Imaging Sciences (J.W., S.D., J.A., D.Q.)
| | - D Qiu
- From the Departments of Radiology and Imaging Sciences (J.W., S.D., J.A., D.Q.)
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Wang Y, Li Y, Ma C, Qiu D. Gas exchange, photosystem II photochemistry, and the antioxidant system of longan plant (Dimocarpus longan Lour.) leaves in response to lead (Pb) stress. ACTA ACUST UNITED AC 2016. [DOI: 10.21475/poj.16.09.04.pne95] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Miller J, Drew L, Green O, Dukovski D, McEwan B, Villella A, Patel N, Bastos C, Cullen M, Danh H, Wachi S, Giuliano K, Longo K, Bhalla A, Qiu D, Zou C, Ivarsson M, Munoz B, Mehmet H. WS13.5 CFTR amplifiers are mutation-agnostic modulators that increase CFTR protein levels and complement other CF therapeutic modalities. J Cyst Fibros 2016. [DOI: 10.1016/s1569-1993(16)30137-0] [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: 10/21/2022]
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Kumah DP, Dogan M, Ngai JH, Qiu D, Zhang Z, Su D, Specht ED, Ismail-Beigi S, Ahn CH, Walker FJ. Engineered Unique Elastic Modes at a BaTiO_{3}/(2×1)-Ge(001) Interface. Phys Rev Lett 2016; 116:106101. [PMID: 27015492 DOI: 10.1103/physrevlett.116.106101] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Indexed: 06/05/2023]
Abstract
The strong interaction at an interface between a substrate and thin film leads to epitaxy and provides a means of inducing structural changes in the epitaxial film. These induced material phases often exhibit technologically relevant electronic, magnetic, and functional properties. The 2×1 surface of a Ge(001) substrate applies a unique type of epitaxial constraint on thin films of the perovskite oxide BaTiO_{3} where a change in bonding and symmetry at the interface leads to a non-bulk-like crystal structure of the BaTiO_{3}. While the complex crystal structure is predicted using first-principles theory, it is further shown that the details of the structure are a consequence of hidden phases found in the bulk elastic response of the BaTiO_{3} induced by the symmetry of forces exerted by the germanium substrate.
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Affiliation(s)
- D P Kumah
- Center for Research on Interface Structures and Phenomena, Yale University, New Haven, Connecticut 06520, USA
| | - M Dogan
- Center for Research on Interface Structures and Phenomena, Yale University, New Haven, Connecticut 06520, USA
| | - J H Ngai
- Center for Research on Interface Structures and Phenomena, Yale University, New Haven, Connecticut 06520, USA
| | - D Qiu
- Center for Research on Interface Structures and Phenomena, Yale University, New Haven, Connecticut 06520, USA
| | - Z Zhang
- Argonne National Laboratory, Advanced Photon Source, Argonne, Illinois 60439, USA
| | - D Su
- Brookhaven National Laboratory, Center for Functional Nanomaterials, Upton, New York 11973, USA
| | - E D Specht
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - S Ismail-Beigi
- Center for Research on Interface Structures and Phenomena, Yale University, New Haven, Connecticut 06520, USA
| | - C H Ahn
- Center for Research on Interface Structures and Phenomena, Yale University, New Haven, Connecticut 06520, USA
| | - F J Walker
- Center for Research on Interface Structures and Phenomena, Yale University, New Haven, Connecticut 06520, USA
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Pan T, Li Y, Ma C, Qiu D. Calcium affecting protein expression in longan under simulated acid rain stress. Environ Sci Pollut Res Int 2015; 22:12215-12223. [PMID: 25893616 DOI: 10.1007/s11356-015-4389-7] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2014] [Accepted: 03/17/2015] [Indexed: 06/04/2023]
Abstract
Longan (Dimocarpus longana Lour. cv. Wulongling) of uniform one-aged seedlings grown in pots were selected to study specific proteins expressed in leaves under simulated acid rain (SiAR) stress and exogenous Ca(2+) regulation. Sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) results showed that there was a protein band specifically expressed under SiAR of pH 2.5 stress for 15 days with its molecular weight of about 23 kD. A 17 kD protein band specifically expressed after SiAR stress 5 days. Compared with pH 2.5, the pH 3.5 of SiAR made a less influence to protein expression. Two-dimensional electrophoresis (2-DE) results showed that six new specific proteins including C4 (20.2 kD pI 6.0), F (24 kD pI 6.35), B3 (22.3 kD pI 6.35), B4 (23.5 kD pI 6.5), C5 (21.8 kD pI 5.6), and C6 (20.2 kD pI 5.6) specifically expressed. C4 always expressed during SiAR stress. F expressed under the stress of pH 2.5 for 15 days and expressed in all pH SiAR stress for 20 days. The expression of proteins including B3, C5, and C6 was related to pH value and stress intensity of SiAR. The expression of B4 resulted from synergistic effects of SiAR and Ca. The expression of G1 (Mr 19.3 kD, pI 4.5), G2 (Mr 17.8 kD, pI 4.65), G3 (Mr 16.6 kD, pI 4.6), and G4 (Mr 14.7 kD, pI 4.4) enhanced under the treatment of 5 mM ethylene glycol tetraacetic acid (EGTA) and 2 mM chlorpromazine (CPZ). These proteins showed antagonistic effects and might be relative to the Ca-calmodulin (Ca-CaM) system of longan in response to SiAR stress.
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Affiliation(s)
- Tengfei Pan
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
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Dehkharghani S, Bammer R, Straka M, Albin LS, Kass-Hout O, Allen JW, Rangaraju S, Qiu D, Winningham MJ, Nahab F. Performance and Predictive Value of a User-Independent Platform for CT Perfusion Analysis: Threshold-Derived Automated Systems Outperform Examiner-Driven Approaches in Outcome Prediction of Acute Ischemic Stroke. AJNR Am J Neuroradiol 2015; 36:1419-25. [PMID: 25999410 DOI: 10.3174/ajnr.a4363] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2014] [Accepted: 01/20/2015] [Indexed: 01/07/2023]
Abstract
BACKGROUND AND PURPOSE Treatment strategies in acute ischemic stroke aim to curtail ischemic progression. Emerging paradigms propose patient subselection using imaging biomarkers derived from CT, CTA, and CT perfusion. We evaluated the performance of a fully-automated computational tool, hypothesizing enhancements compared with qualitative approaches. The correlation between imaging variables and clinical outcomes in a cohort of patients with acute ischemic stroke is reported. MATERIALS AND METHODS Sixty-two patients with acute ischemic stroke and MCA or ICA occlusion undergoing multidetector CT, CTA, and CTP were retrospectively evaluated. CTP was processed on a fully operator-independent platform (RApid processing of PerfusIon and Diffusion [RAPID]) computing automated core estimates based on relative cerebral blood flow and relative cerebral blood volume and hypoperfused tissue volumes at varying thresholds of time-to-maximum. Qualitative analysis was assigned by 2 independent reviewers for each variable, including CT-ASPECTS, CBV-ASPECTS, CBF-ASPECTS, CTA collateral score, and CTA clot burden score. Performance as predictors of favorable clinical outcome and final infarct volume was established for each variable. RESULTS Both RAPID core estimates, CT-ASPECTS, CBV-ASPECTS, and clot burden score correlated with favorable clinical outcome (P < .05); CBF-ASPECTS and collateral score were not significantly associated with favorable outcome, while hypoperfusion estimates were variably associated, depending on the selected time-to-maximum thresholds. Receiver operating characteristic analysis demonstrated disparities among tested variables, with RAPID core and hypoperfusion estimates outperforming all qualitative approaches (area under the curve, relative CBV = 0.86, relative CBF = 0.81; P < .001). CONCLUSIONS Qualitative approaches to acute ischemic stroke imaging are subject to limitations due to their subjective nature and lack of physiologic information. These findings support the benefits of high-speed automated analysis, outperforming conventional methodologies while limiting delays in clinical management.
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Affiliation(s)
- S Dehkharghani
- From the Departments of Radiology and Imaging Sciences (S.D., L.S.A., J.W.A., D.Q.)
| | - R Bammer
- Department of Radiology (R.B.), Stanford University Hospital, Stanford, California
| | - M Straka
- Institut für Radiologie und Nuklearmedizin (M.S.), Kantonsspital Winterthur, Winterthur, Switzerland
| | - L S Albin
- From the Departments of Radiology and Imaging Sciences (S.D., L.S.A., J.W.A., D.Q.)
| | - O Kass-Hout
- Department of Neurology (O.K.-H.), Catholic Health System, Buffalo, New York
| | - J W Allen
- From the Departments of Radiology and Imaging Sciences (S.D., L.S.A., J.W.A., D.Q.)
| | - S Rangaraju
- Neurology (S.R., M.J.W., F.N.), Emory University Hospital, Atlanta, Georgia
| | - D Qiu
- From the Departments of Radiology and Imaging Sciences (S.D., L.S.A., J.W.A., D.Q.)
| | - M J Winningham
- Neurology (S.R., M.J.W., F.N.), Emory University Hospital, Atlanta, Georgia
| | - F Nahab
- Neurology (S.R., M.J.W., F.N.), Emory University Hospital, Atlanta, Georgia
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Dehkharghani S, Mao H, Howell L, Zhang X, Pate KS, Magrath PR, Tong F, Wei L, Qiu D, Fleischer C, Oshinski JN. Proton resonance frequency chemical shift thermometry: experimental design and validation toward high-resolution noninvasive temperature monitoring and in vivo experience in a nonhuman primate model of acute ischemic stroke. AJNR Am J Neuroradiol 2015; 36:1128-35. [PMID: 25655874 DOI: 10.3174/ajnr.a4241] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2014] [Accepted: 11/27/2014] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Applications for noninvasive biologic temperature monitoring are widespread in biomedicine and of particular interest in the context of brain temperature regulation, where traditionally costly and invasive monitoring schemes limit their applicability in many settings. Brain thermal regulation, therefore, remains controversial, motivating the development of noninvasive approaches such as temperature-sensitive nuclear MR phenomena. The purpose of this work was to compare the utility of competing approaches to MR thermometry by using proton resonance frequency chemical shift. We tested 3 methodologies, hypothesizing the feasibility of a fast and accurate approach to chemical shift thermometry, in a phantom study at 3T. MATERIALS AND METHODS A conventional, paired approach (difference [DIFF]-1), an accelerated single-scan approach (DIFF-2), and a new, further accelerated strategy (DIFF-3) were tested. Phantom temperatures were modulated during real-time fiber optic temperature monitoring, with MR thermometry derived simultaneously from temperature-sensitive changes in the water proton chemical shift (∼0.01 ppm/°C). MR thermometry was subsequently performed in a series of in vivo nonhuman primate experiments under physiologic and ischemic conditions, testing its reproducibility and overall performance. RESULTS Chemical shift thermometry demonstrated excellent agreement with phantom temperatures for all 3 approaches (DIFF-1: linear regression R(2) = 0.994; P < .001; acquisition time = 4 minutes 40 seconds; DIFF-2: R(2) = 0.996; P < .001; acquisition time = 4 minutes; DIFF-3: R(2) = 0.998; P < .001; acquisition time = 40 seconds). CONCLUSIONS These findings confirm the comparability in performance of 3 competing approaches to MR thermometry and present in vivo applications under physiologic and ischemic conditions in a primate stroke model.
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Affiliation(s)
- S Dehkharghani
- From the Department of Radiology and Imaging Sciences (S.D., H.M., K.S.P., F.T., D.Q., J.N.O.), Emory University Hospital, Atlanta, Georgia
| | - H Mao
- From the Department of Radiology and Imaging Sciences (S.D., H.M., K.S.P., F.T., D.Q., J.N.O.), Emory University Hospital, Atlanta, Georgia
| | - L Howell
- Yerkes National Primate Research Center (L.H., X.Z.), Emory University, Atlanta, Georgia
| | - X Zhang
- Yerkes National Primate Research Center (L.H., X.Z.), Emory University, Atlanta, Georgia
| | - K S Pate
- From the Department of Radiology and Imaging Sciences (S.D., H.M., K.S.P., F.T., D.Q., J.N.O.), Emory University Hospital, Atlanta, Georgia
| | - P R Magrath
- Department of Biomedical Engineering (P.R.M.), Northwestern University, Evanston, Illinois
| | - F Tong
- From the Department of Radiology and Imaging Sciences (S.D., H.M., K.S.P., F.T., D.Q., J.N.O.), Emory University Hospital, Atlanta, Georgia
| | - L Wei
- Department of Biomedical Engineering (L.W., C.F.), Emory University-Georgia Institute of Technology, Atlanta, Georgia
| | - D Qiu
- From the Department of Radiology and Imaging Sciences (S.D., H.M., K.S.P., F.T., D.Q., J.N.O.), Emory University Hospital, Atlanta, Georgia
| | - C Fleischer
- Department of Biomedical Engineering (L.W., C.F.), Emory University-Georgia Institute of Technology, Atlanta, Georgia
| | - J N Oshinski
- From the Department of Radiology and Imaging Sciences (S.D., H.M., K.S.P., F.T., D.Q., J.N.O.), Emory University Hospital, Atlanta, Georgia
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Kokabi N, Camacho J, Xing M, Kitajima H, Qiu D, Mittal P, Kim H. MRapparent diffusion coefficient quantification as an imaging biomarker for anatomic response of unresectable hepatocellular carcinoma to doxorubicin drug-eluting beads chemoembolization. J Vasc Interv Radiol 2014. [DOI: 10.1016/j.jvir.2013.12.177] [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] Open
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Qiu D, Chan GCF, Chu J, Chan Q, Ha SY, Moseley ME, Khong PL. MR quantitative susceptibility imaging for the evaluation of iron loading in the brains of patients with β-thalassemia major. AJNR Am J Neuroradiol 2014; 35:1085-90. [PMID: 24578278 DOI: 10.3174/ajnr.a3849] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
BACKGROUND AND PURPOSE Patients with β-thalassemia require blood transfusion to prolong their survival, which could cause iron overload in multiple organs, including the heart, liver, and brain. In this study, we aimed to quantify iron loading in the brains of patients with β-thalassemia major through the use of MR quantitative susceptibility imaging. MATERIALS AND METHODS Thirty-one patients with thalassemia with a mean (± standard deviation) age of 25.3 (±5.9) years and 33 age-matched healthy volunteers were recruited and underwent MR imaging at 3T. Quantitative susceptibility images were reconstructed from a 3D gradient-echo sequence. Susceptibility values were measured in the caudate nucleus, putamen, globus pallidus, red nucleus, substantia nigra, dentate nucleus, and choroid plexus. General linear model analyses were performed to compare susceptibility values of different ROIs between the patients with thalassemia and healthy volunteers. RESULTS Of the 31 patients, 27 (87.1%) had abnormal iron deposition in one of the ROIs examined. Significant positive age effect on susceptibility value was found in the putamen, dentate nucleus, substantia nigra, and red nucleus (P = .002, P = .017, P = .044, and P = .014, respectively) in the control subjects. Compared with healthy control subjects, patients with thalassemia showed significantly lower susceptibility value in the globus pallidus (P < .001) and substantia nigra (P = .003) and significantly higher susceptibility value in the red nucleus (P = .021) and choroid plexus (P < .001). CONCLUSIONS A wide range of abnormal susceptibility values, indicating iron overloading or low iron content, was found in patients with thalassemia. MR susceptibility imaging is a sensitive method for quantifying iron concentration in the brain and can be used as a potentially valuable tool for brain iron assessment.
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Affiliation(s)
- D Qiu
- From the Departments of Diagnostic Radiology (D.Q, P.-L.K.)Department of Radiology and Imaging Sciences (D.Q.), Emory University, Atlanta, Georgia
| | - G C-F Chan
- Pediatrics and Adolescent Medicine (G.C.-F.C., S.-Y.H.), The University of Hong Kong, Hong Kong, China
| | - J Chu
- Department of Radiology (J.C.), First Affiliated Hospital of Sun Yat Sen University, Guangzhou, China
| | - Q Chan
- Philips Healthcare Hong Kong (Q.C.), Hong Kong, China
| | - S-Y Ha
- Pediatrics and Adolescent Medicine (G.C.-F.C., S.-Y.H.), The University of Hong Kong, Hong Kong, China
| | - M E Moseley
- Department of Radiology (M.E.M.), Stanford University, Stanford, California
| | - P-L Khong
- From the Departments of Diagnostic Radiology (D.Q, P.-L.K.)
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Christen T, Pannetier NA, Ni WW, Qiu D, Moseley ME, Schuff N, Zaharchuk G. MR vascular fingerprinting: A new approach to compute cerebral blood volume, mean vessel radius, and oxygenation maps in the human brain. Neuroimage 2013; 89:262-70. [PMID: 24321559 DOI: 10.1016/j.neuroimage.2013.11.052] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.3] [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: 07/29/2013] [Revised: 11/22/2013] [Accepted: 11/25/2013] [Indexed: 11/29/2022] Open
Abstract
In the present study, we describe a fingerprinting approach to analyze the time evolution of the MR signal and retrieve quantitative information about the microvascular network. We used a Gradient Echo Sampling of the Free Induction Decay and Spin Echo (GESFIDE) sequence and defined a fingerprint as the ratio of signals acquired pre- and post-injection of an iron-based contrast agent. We then simulated the same experiment with an advanced numerical tool that takes a virtual voxel containing blood vessels as input, then computes microscopic magnetic fields and water diffusion effects, and eventually derives the expected MR signal evolution. The parameter inputs of the simulations (cerebral blood volume [CBV], mean vessel radius [R], and blood oxygen saturation [SO2]) were varied to obtain a dictionary of all possible signal evolutions. The best fit between the observed fingerprint and the dictionary was then determined by using least square minimization. This approach was evaluated in 5 normal subjects and the results were compared to those obtained by using more conventional MR methods, steady-state contrast imaging for CBV and R and a global measure of oxygenation obtained from the superior sagittal sinus for SO2. The fingerprinting method enabled the creation of high-resolution parametric maps of the microvascular network showing expected contrast and fine details. Numerical values in gray matter (CBV=3.1±0.7%, R=12.6±2.4μm, SO2=59.5±4.7%) are consistent with literature reports and correlated with conventional MR approaches. SO2 values in white matter (53.0±4.0%) were slightly lower than expected. Numerous improvements can easily be made and the method should be useful to study brain pathologies.
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Affiliation(s)
- T Christen
- Department of Radiology, Stanford University, Stanford, CA, USA.
| | - N A Pannetier
- Center for Imaging of Neurodegenerative Diseases, Veterans Affairs Medical Centre, San Francisco, USA; Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, USA
| | - W W Ni
- Department of Radiology, Stanford University, Stanford, CA, USA
| | - D Qiu
- Department of Radiology, Stanford University, Stanford, CA, USA
| | - M E Moseley
- Department of Radiology, Stanford University, Stanford, CA, USA
| | - N Schuff
- Center for Imaging of Neurodegenerative Diseases, Veterans Affairs Medical Centre, San Francisco, USA; Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, USA
| | - G Zaharchuk
- Department of Radiology, Stanford University, Stanford, CA, USA
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Mito A, Arata N, Jwa S, Sakamoto N, Qiu D, Murashima A, Ichihara A, Matsuoka R, Sekizawa A, Ohya Y, Kitagawa M. PP104. Pregnancy-induced hypertension is a strong risk factor for hypertension just 5 years after delivery: A double cohort study at the National Center for Child Health and Development and Showa University Hospital, Tokyo. Pregnancy Hypertens 2012; 2:295-6. [DOI: 10.1016/j.preghy.2012.04.215] [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: 11/25/2022]
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Narita M, Qiu D, Hamaguchi M, Doi M, Futamura M, Sakamoto N, Saito H, Ohya Y. Maternal Diet during Pregnancy and Wheeze and Eczema in Infants; the Japanese Birth Cohort (T-CHILD) Study. J Allergy Clin Immunol 2012. [DOI: 10.1016/j.jaci.2011.12.075] [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: 11/25/2022]
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Hou L, Zhou X, Chen Y, Qiu D, Zhu L, Wang J. Thyrotropin-releasing hormone causes a tonic excitatory postsynaptic current and inhibits the phasic inspiratory inhibitory inputs in inspiratory-inhibited airway vagal preganglionic neurons. Neuroscience 2011; 202:184-91. [PMID: 22198018 DOI: 10.1016/j.neuroscience.2011.12.003] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2011] [Revised: 10/29/2011] [Accepted: 12/03/2011] [Indexed: 11/17/2022]
Abstract
The airway vagal preganglionic neurons (AVPNs) in the external formation of the nucleus ambiguus (eNA), which include the inspiratory-activated AVPNs (IA-AVPNs) and inspiratory-inhibited AVPNs (II-AVPNs), predominate in the control of the trachea and bronchia. The AVPNs receive particularly dense inputs from terminals containing thyrotropin-releasing hormone (TRH). TRH microinjection into the nucleus ambiguus (NA) caused constriction of the tracheal smooth muscles. However, it is unknown whether TRH affects all subtypes of the AVPNs in the eNA, and as a result affects the control of all types of target tissues in the airway (smooth muscles, submucosal glands, and blood vessels). It is also unknown how TRH affects the AVPNs at neuronal and synaptic levels. In this study, the AVPNs in the eNA were retrogradely labeled from the extrathoracic trachea, the II-AVPNs were identified in rhythmically firing brainstem slices, and the effects of TRH were examined using patch-clamp. TRH (100 nmol L(-1)) enhanced both the rhythm and the intensity of the hypoglossal bursts, and caused a tonic excitatory inward current in the II-AVPNs at a holding voltage of -80 mV. The frequency of the spontaneous excitatory postsynaptic currents (EPSCs) in the II-AVPNs, which showed no respiratory-related change in a respiratory cycle, was not significantly changed by TRH. At a holding voltage of -50 mV, the II-AVPNs showed both spontaneous and phasic inspiratory (outward) inhibitory postsynaptic currents (IPSCs). TRH had no effect on the spontaneous IPSCs but significantly attenuated the phasic inspiratory outward currents, in both the amplitude and area. After focal application of strychnine, an antagonist of glycine receptors, to the II-AVPNs, the spontaneous IPSCs were extremely scarce and the phasic inspiratory inhibitory currents were abolished; and further application of TRH had no effect on these currents. Under current clamp configuration, TRH caused a depolarization and increased the firing rate of the II-AVPNs during inspiratory intervals. These results demonstrate that TRH affects the II-AVPNs both postsynaptically via a direct excitatory current and presynaptically via attenuation of the phasic glycinergic synaptic inputs.
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Affiliation(s)
- L Hou
- The State Key Laboratory of Medical Neurobiology and Institute of Brain Sciences, Fudan University Shanghai Medical College, 138 Yi-Xue-Yuan Road, Shanghai 200032, PR China
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Tang Y, Bian Z, Zhao L, Liu Y, Liang S, Wang Q, Han X, Peng Y, Chen X, Shen L, Qiu D, Li Z, Ma X. Interleukin-17 exacerbates hepatic steatosis and inflammation in non-alcoholic fatty liver disease. Clin Exp Immunol 2011; 166:281-90. [PMID: 21985374 DOI: 10.1111/j.1365-2249.2011.04471.x] [Citation(s) in RCA: 220] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Mechanisms associated with the progression of simple steatosis to non-alcoholic fatty liver disease (NAFLD) remain undefined. Regulatory T cells (T(regs)) play a critical role in regulating inflammatory processes in non-alcoholic steatohepatitis (NASH) and because T helper type 17 (Th17) functionally oppose T(reg)-mediated responses, this study focused on characterizing the role of Th17 cells using a NAFLD mouse model. C57BL/6 mice were fed either a normal diet (ND) or high fat (HF) diet for 8 weeks. Mice in the HF group had a significantly higher frequency of liver Th17 cells compared to ND-fed mice. Neutralization of interleukin (IL)-17 in HF mice ameliorated lipopolysaccharide (LPS)-induced liver injury reflected by decreased serum alanine aminotransferase (ALT) levels and reduced inflammatory cell infiltrates in the liver. In vitro, HepG2 cells cultured in the presence of free fatty acids (FFA; oleic acid and palmitic acid) for 24 h and IL-17 developed steatosis via insulin-signalling pathway interference. IL-17 and FFAs synergized to induce IL-6 production by HepG2 cells and murine primary hepatocytes which, in combination with transforming growth factor (TGF-β), expanded Th17 cells. It is likely that a similar process occurs in NASH patients, as there were significant levels of IL-17(+) cell infiltrates in NASH patient livers. The hepatic expression of Th17 cell-related genes [retinoid-related orphan receptor gamma (ROR)γt, IL-17, IL-21 and IL-23] was also increased significantly in NASH patients compared to healthy controls. Th17 cells and IL-17 were associated with hepatic steatosis and proinflammatory response in NAFLD and facilitated the transition from simple steatosis to steatohepatitis. Strategies designed to alter the balance between Th17 cells and T(regs) should be explored as a means of preventing progression to NASH and advanced liver diseases in NAFLD patients.
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Affiliation(s)
- Y Tang
- Department of Gastroenterology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Institute of Digestive Disease, Shanghai, China
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Qiu D, Sakamoto N, Arata N, Ohya Y. P1-297 Maternal characteristics in relation to low birth weight infants in a Japanese cohort study. Br J Soc Med 2011. [DOI: 10.1136/jech.2011.142976e.89] [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: 11/04/2022]
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Abstract
AIMS To determine the global transcriptional response of Bacillus subtilis to an antimicrobial agent, xenocoumacin 1 (Xcn1). METHODS AND RESULTS Subinhibitory concentration of Xcn1 applied to B. subtilis was measured according to Hutter's method for determining optimal concentrations. cDNA microarray technology was used to study the global transcriptional response of B. subtilis to Xcn1. Real-time RT-PCR was employed to verify alterations in the transcript levels of six genes. The subinhibitory concentration was determined to be 1 μg ml(-1). The microarray data demonstrated that Xcn1 treatment of B. subtilis led to more than a 2.0-fold up-regulation of 480 genes and more than a 2.0-fold down-regulation of 479 genes (q ≤ 0.05). CONCLUSIONS The transcriptional responses of B. subtilis to Xcn1 were determined, and several processes were affected by Xcn1. Additionally, cluster analysis of gene expression profiles after treatment with Xcn1 or 37 previously studied antibiotics indicated that Xcn1 has similar mechanisms of action to protein synthesis inhibitors. SIGNIFICANCE AND IMPACT OF THE STUDY These microarray data showed alterations of gene expression in B. subtilis after exposure to Xcn1. From the results, we identified various processes affected by Xcn1. This study provides a whole-genome perspective to elucidate the action of Xcn1 as a potential antimicrobial agent.
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Affiliation(s)
- T Zhou
- Key Laboratory of Biological Control, Ministry of Agriculture, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
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Orgel J, Antipova O, Sagi I, Bitler A, Qiu D, Wang R, Xu Y, San Antonio J. Collagen fibril surface displays a constellation of sites capable of promoting fibril assembly, stability, and hemostasis. Connect Tissue Res 2011; 52:18-24. [PMID: 21117898 PMCID: PMC3244825 DOI: 10.3109/03008207.2010.511354] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Fibrillar collagens form the structural basis of organs and tissues including the vasculature, bone, and tendon. They are also dynamic, organizational scaffolds that present binding and recognition sites for ligands, cells, and platelets. We interpret recently published X-ray diffraction findings and use atomic force microscopy data to illustrate the significance of new insights into the functional organization of the collagen fibril. These data indicate that collagen's most crucial functional domains localize primarily to the overlap region, comprising a constellation of sites we call the "master control region." Moreover, the collagen's most exposed aspect contains its most stable part-the C-terminal region that controls collagen assembly, cross-linking, and blood clotting. Hidden beneath the fibril surface exists a constellation of "cryptic" sequences poised to promote hemostasis and cell-collagen interactions in tissue injury and regeneration. These findings begin to address several important, and previously unresolved, questions: How functional domains are organized in the fibril, which domains are accessible, and which require proteolysis or structural trauma to become exposed? Here we speculate as to how collagen fibrillar organization impacts molecular processes relating to tissue growth, development, and repair.
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Affiliation(s)
- J.P.R.O Orgel
- Pritzker Institute of Biomedical Science and Engineering, Illinois Institute of Technology, Chicago, IL, USA.,Department of Biological, Chemical and Physical Sciences, Illinois Institute of Technology, Chicago, IL, USA.,Corresponding Authors: J.P.R.O. Orgel () and J.D. San Antonio ()
| | - O. Antipova
- Pritzker Institute of Biomedical Science and Engineering, Illinois Institute of Technology, Chicago, IL, USA.,Department of Biological, Chemical and Physical Sciences, Illinois Institute of Technology, Chicago, IL, USA
| | - I Sagi
- Department of Structural Biology, Weizmann Institute of Science, Rehovot, Israel
| | - A. Bitler
- Department of Structural Biology, Weizmann Institute of Science, Rehovot, Israel
| | - D. Qiu
- Department of Biological, Chemical and Physical Sciences, Illinois Institute of Technology, Chicago, IL, USA
| | - R. Wang
- Department of Biological, Chemical and Physical Sciences, Illinois Institute of Technology, Chicago, IL, USA
| | - Y. Xu
- Department of Chemistry, Hunter College, CUNY, NY, USA
| | - J.D. San Antonio
- Operations, Orthovita, Inc., Malvern, PA, USA.,Corresponding Authors: J.P.R.O. Orgel () and J.D. San Antonio ()
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