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Yu H, Teng Z, Liu B, Lv J, Chen Y, Qin Z, Peng Y, Meng S, He Y, Duan M, Zhang J, Ye N. Transcription factor OsMYB30 increases trehalose content to inhibit α-amylase and seed germination at low temperature. Plant Physiol 2024; 194:1815-1833. [PMID: 38057158 DOI: 10.1093/plphys/kiad650] [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] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 10/26/2023] [Accepted: 11/11/2023] [Indexed: 12/08/2023]
Abstract
Low-temperature germination (LTG) is an important agronomic trait for direct-seeding cultivation of rice (Oryza sativa). Both OsMYB30 and OsTPP1 regulate the cold stress response in rice, but the function of OsMYB30 and OsTPP1 in regulating LTG and the underlying molecular mechanism remains unknown. Employing transcriptomics and functional studies revealed a sugar signaling pathway that regulates seed germination in response to low temperature (LT). Expression of OsMYB30 and OsTPP1 was induced by LT during seed germination, and overexpressing either OsMYB30 or OsTPP1 delayed seed germination and increased sensitivity to LT during seed germination. Transcriptomics and qPCR revealed that expression of OsTPP1 was upregulated in OsMYB30-overexpressing lines but downregulated in OsMYB30-knockout lines. In vitro and in vivo experiments revealed that OsMYB30 bound to the promoter of OsTPP1 and regulated the abundance of OsTPP1 transcripts. Overaccumulation of trehalose (Tre) was found in both OsMYB30- and OsTPP1-overexpressing lines, resulting in inhibition of α-amylase 1a (OsAMY1a) gene during seed germination. Both LT and exogenous Tre treatments suppressed the expression of OsAMY1a, and the osamy1a mutant was not sensitive to exogenous Tre during seed germination. Overall, we concluded that OsMYB30 expression was induced by LT to activate the expression of OsTPP1 and increase Tre content, which thus inhibited α-amylase activity and seed germination. This study identified a phytohormone-independent pathway that integrates environmental cues with internal factors to control seed germination.
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Affiliation(s)
- Huihui Yu
- Hunan Provincial Key Laboratory of Rice Stress Biology, College of Agronomy, Hunan Agricultural University, Changsha 410128, China
- School of Life Sciences and State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Hong Kong 999077, China
| | - Zhenning Teng
- Hunan Provincial Key Laboratory of Rice Stress Biology, College of Agronomy, Hunan Agricultural University, Changsha 410128, China
- School of Life Sciences and State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Hong Kong 999077, China
| | - Bohan Liu
- Hunan Provincial Key Laboratory of Rice Stress Biology, College of Agronomy, Hunan Agricultural University, Changsha 410128, China
| | - Jiahan Lv
- Hunan Provincial Key Laboratory of Rice Stress Biology, College of Agronomy, Hunan Agricultural University, Changsha 410128, China
| | - Yinke Chen
- Hunan Provincial Key Laboratory of Rice Stress Biology, College of Agronomy, Hunan Agricultural University, Changsha 410128, China
| | - Zhonge Qin
- Hunan Provincial Key Laboratory of Rice Stress Biology, College of Agronomy, Hunan Agricultural University, Changsha 410128, China
| | - Yan Peng
- Hunan Provincial Key Laboratory of Rice Stress Biology, College of Agronomy, Hunan Agricultural University, Changsha 410128, China
| | - Shuan Meng
- Hunan Provincial Key Laboratory of Rice Stress Biology, College of Agronomy, Hunan Agricultural University, Changsha 410128, China
| | - Yuchi He
- State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Hubei University, Wuhan 430000, China
| | - Meijuan Duan
- Hunan Provincial Key Laboratory of Rice Stress Biology, College of Agronomy, Hunan Agricultural University, Changsha 410128, China
| | - Jianhua Zhang
- School of Life Sciences and State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Hong Kong 999077, China
- Department of Biology, Hong Kong Baptist University, Hong Kong 999077, China
| | - Nenghui Ye
- Hunan Provincial Key Laboratory of Rice Stress Biology, College of Agronomy, Hunan Agricultural University, Changsha 410128, China
- Department of Biology, Hong Kong Baptist University, Hong Kong 999077, China
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Zhao F, Ma Q, Li Y, Jiang M, Zhou Z, Meng S, Peng Y, Zhang J, Ye N, Liu B. OsNAC2 regulates seed dormancy and germination in rice by inhibiting ABA catabolism. Biochem Biophys Res Commun 2023; 682:335-342. [PMID: 37837754 DOI: 10.1016/j.bbrc.2023.10.024] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Accepted: 10/06/2023] [Indexed: 10/16/2023]
Abstract
Seed dormancy and germination determine the beginning of the life cycle of plants, and the phytohormone ABA plays a crucial role in regulation of seed dormancy and germination. However, the upstream regulatory mechanism of ABA metabolism during dormancy releasing is still remain elusive. In this paper, we present a novel mechanism of OsNAC2 in controlling ABA metabolism and regulation of seed dormancy. OsNAC2 highly expressed during seed development and germination, and overexpression of OsNAC2 strengthened seed dormancy and suppressed germination. Moreover, exogenous phytohormone treatment showed that OsNAC2 acted upstream of GA signaling and downstream of ABA signaling. Additionally, overexpression of OsNAC2 inhibited ABA degradation and increased ABA content during early germination. Further molecular analysis revealed that OsNAC2 directly bound to the ABA metabolism genes promoter and inhibits their transcription in rice protoplasts. These finding could help us explain the genetic regulation mechanism of ABA metabolism during dormancy release and germination in rice.
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Affiliation(s)
- Fankai Zhao
- College of Agronomy, Hunan Agricultural University, Changsha, 410128, China; Key Laboratory of Crop Physiological and Molecular Biology, Ministry of Education, Hunan Agricultural University, Changsha, 410128, China
| | - Qun Ma
- College of Agronomy, Hunan Agricultural University, Changsha, 410128, China; Agro-Tech Extension Center of Guangdong Province, Guangzhou, Guangdong, 510520, China
| | - Yingjiang Li
- College of Agronomy, Hunan Agricultural University, Changsha, 410128, China; Key Laboratory of Crop Physiological and Molecular Biology, Ministry of Education, Hunan Agricultural University, Changsha, 410128, China
| | - Meihe Jiang
- College of Agronomy, Hunan Agricultural University, Changsha, 410128, China; Key Laboratory of Crop Physiological and Molecular Biology, Ministry of Education, Hunan Agricultural University, Changsha, 410128, China
| | - Zhongjing Zhou
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agroproducts, Zhejiang Academy of Agricultural Sciences, Hangzhou, Zhejiang, 310021, China
| | - Shuan Meng
- College of Agronomy, Hunan Agricultural University, Changsha, 410128, China; Key Laboratory of Crop Physiological and Molecular Biology, Ministry of Education, Hunan Agricultural University, Changsha, 410128, China
| | - Yan Peng
- College of Agronomy, Hunan Agricultural University, Changsha, 410128, China; Key Laboratory of Crop Physiological and Molecular Biology, Ministry of Education, Hunan Agricultural University, Changsha, 410128, China
| | - Jianhua Zhang
- Key Laboratory of Crop Physiological and Molecular Biology, Ministry of Education, Hunan Agricultural University, Changsha, 410128, China; Department of Biology, Hong Kong Baptist University, Hong Kong, China; School of Life Sciences and State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Hong Kong, China.
| | - Nenghui Ye
- College of Agronomy, Hunan Agricultural University, Changsha, 410128, China; Key Laboratory of Crop Physiological and Molecular Biology, Ministry of Education, Hunan Agricultural University, Changsha, 410128, China; Agro-Tech Extension Center of Guangdong Province, Guangzhou, Guangdong, 510520, China.
| | - Bohan Liu
- College of Agronomy, Hunan Agricultural University, Changsha, 410128, China; Key Laboratory of Crop Physiological and Molecular Biology, Ministry of Education, Hunan Agricultural University, Changsha, 410128, China.
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Liu Q, Lun L, Meng S, Wang Z, Qu Y, Huang X, Chen X, Wang J, Zhang J, Wang K, Wu R, Zhang Y, Yi J, Luo J. Feasibility of Omitting Contralateral Neck Irradiation in Patients with Node-Negative Sinonasal Squamous Cell Carcinoma Crossing the Midline. Int J Radiat Oncol Biol Phys 2023; 117:e600. [PMID: 37785813 DOI: 10.1016/j.ijrobp.2023.06.1961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) This study aims to analyze the nodal target volume in patients with node-negative SNSCC crossing the midline. MATERIALS/METHODS One hundred and four patients with node-negative advanced sinonasal squamous cell carcinoma (SNSCC) crossing the midline were included. Survival rates were estimated and compared between treatment groups. RESULTS Sixty-four patients received contralateral ENI (contralateral ENI group), while forty patients did not (non-contralateral ENI group). The median follow-up time was 89.99 and 95.01 months in the contralateral and non-contralateral ENI groups, respectively. At 5 years, the regional relapse-free survival and contralateral regional relapse-free survival were 57.68% vs. 55.83% (p = 0.372), and 57.68% vs. 61.62% (p = 0.541), in contralateral ENI group vs. non-contralateral ENI group, respectively. Five-year overall survival, local relapse-free survival, and distant metastasis-free survival were similar in the two groups (all p > 0.05). CONCLUSION In patients with node-negative SNSCC crossing the midline, omission of contralateral ENI did not affect regional control and survival outcomes on the premise of receiving ipsilateral ENI covering at least levels Ib and II.
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Affiliation(s)
- Q Liu
- Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - L Lun
- Department of Head and Neck Radiotherapy, Harbin Medical University Cancer Hospital, Harbin, China
| | - S Meng
- Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Z Wang
- Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Y Qu
- Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - X Huang
- Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - X Chen
- Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - J Wang
- Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - J Zhang
- Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - K Wang
- Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - R Wu
- Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Y Zhang
- Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - J Yi
- Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - J Luo
- Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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Liu CC, Meng S, Ding Y. [Principle and routine operation of laser assisted periodontal surgery]. Zhonghua Kou Qiang Yi Xue Za Zhi 2023; 58:498-505. [PMID: 37082858 DOI: 10.3760/cma.j.cn112144-20230228-00063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 04/22/2023]
Abstract
Periodontitis is one of the most common infectious oral diseases, which can cause destruction of periodontal supporting tissues and even tooth mobility and loss. Controlling infection, eliminating inflammation, restoring the physiological shape of periodontal tissues, and meeting functional and aesthetic needs are the main goals of periodontal treatment. When periodontitis develops to a more severe stage, surgical treatment is necessary to handle soft and hard tissues for good treatment results. Since the development of the first Nd:YAG laser dedicated to dental medicine by Myers in 1990, over 30 years of clinical and basic research have shown that lasers have tremendous potential in assisting periodontal surgery. This article summarizes the principles and operational routines of laser-assisted periodontal surgery, aiming to provide clinical reference for diagnosis and treatment.
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Affiliation(s)
- C C Liu
- Department of Periodontics, West China Hospital of Stomatology, Sichuan University & National Clinical Research Center for Oral Diseases & State Key Laboratory of Oral Diseases, Chengdu 610041, China
| | - S Meng
- Department of Periodontics, West China Hospital of Stomatology, Sichuan University & National Clinical Research Center for Oral Diseases & State Key Laboratory of Oral Diseases, Chengdu 610041, China
| | - Y Ding
- Department of Periodontics, West China Hospital of Stomatology, Sichuan University & National Clinical Research Center for Oral Diseases & State Key Laboratory of Oral Diseases, Chengdu 610041, China
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Zhang Y, Zhao J, Wang B, Lin Y, Meng S, Luo Y. [Contrast-enhanced ultrasonography with intra-glandular contrast injection can improve the diagnostic accuracy of central compartment lymph node metastasis of thyroid cancer]. Nan Fang Yi Ke Da Xue Xue Bao 2023; 43:219-224. [PMID: 36946041 PMCID: PMC10034552 DOI: 10.12122/j.issn.1673-4254.2023.02.09] [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] [Subscribe] [Scholar Register] [Indexed: 03/23/2023]
Abstract
OBJECTIVE To investigate the value of lymphatic contrast-enhanced ultrasound (LCEUS) with intra-glandular injection of contrast agent for diagnosis of central compartment lymph node metastasis of thyroid cancer. METHODS From November, 2020 to May, 2022, the patients suspected of having thyroid cancer and scheduled for biopsy at our center received both conventional ultrasound and LCEUS examinations of the central compartment lymph nodes before surgery. All the patients underwent surgical dissection of the lymph nodes. The perfusion features in LCEUS were classified as homogeneous enhancement, heterogeneous enhancement, regular/irregular ring, and non-enhancement. With pathological results as the gold standard, we compared the diagnostic ability of conventional ultrasound and LCEUS for identifying metastasis in the central compartment lymph nodes. RESULTS Forty-nine patients with 60 lymph nodes were included in the final analysis. Pathological examination reported metastasis in 34 of the lymph nodes, and 26 were benign lymph nodes. With ultrasound findings of heterogeneous enhancement, irregular ring and non-enhancement as the criteria for malignant lesions, LCEUS had a diagnostic sensitivity, specificity and accuracy of 97.06%, 92.31% and 95% for diagnosing metastatic lymph nodes, respectively, demonstrating its better performance than conventional ultrasound (P < 0.001). Receiver-operating characteristic curve analysis showed that LCEUS had a significantly greater area under the curve than conventional ultrasound for diagnosing metastatic lymph nodes (94.7% [0.856-0.988] vs 78.2% [0.656-0.878], P=0.003). CONCLUSION LCEUS can enhance the display and improve the diagnostic accuracy of the central compartment lymph nodes to provide important clinical evidence for making clinical decisions on treatment of thyroid cancer.
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Affiliation(s)
- Y Zhang
- Department of Ultrasound, First Medical Center of Chinese PLA General Hospital, Beijing 100853, China
| | - J Zhao
- Department of Ultrasound, First Medical Center of Chinese PLA General Hospital, Beijing 100853, China
| | - B Wang
- Department of Surgery, First Medical Center of Chinese PLA General Hospital, Beijing 100853, China
| | - Y Lin
- Department of Ultrasound, First Medical Center of Chinese PLA General Hospital, Beijing 100853, China
| | - S Meng
- Department of Ultrasound, First Medical Center of Chinese PLA General Hospital, Beijing 100853, China
| | - Y Luo
- Department of Ultrasound, First Medical Center of Chinese PLA General Hospital, Beijing 100853, China
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Han TL, Tang TW, Zhang PH, Liu M, Zhao J, Peng JS, Meng S. Cloning and Functional Characterization of SpZIP2. Genes (Basel) 2022; 13:genes13122395. [PMID: 36553665 PMCID: PMC9778510 DOI: 10.3390/genes13122395] [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] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Accepted: 12/14/2022] [Indexed: 12/23/2022] Open
Abstract
Zinc (Zn)-regulated and iron (Fe)-regulated transporter-like proteins (ZIP) are key players involved in the accumulation of cadmium (Cd) and Zn in plants. Sedum plumbizincicola X.H. Guo et S.B. Zhou ex L.H. Wu (S. plumbizincicola) is a Crassulaceae Cd/Zn hyperaccumulator found in China, but the role of ZIPs in S. plumbizincicola remains largely unexplored. Here, we identified 12 members of ZIP family genes by transcriptome analysis in S. plumbizincicola and cloned the SpZIP2 gene with functional analysis. The expression of SpZIP2 in roots was higher than that in the shoots, and Cd stress significantly decreased its expression in the roots but increased its expression in leaves. Protein sequence characteristics and structural analysis showed that the content of alanine and leucine residues in the SpZIP2 sequence was higher than other residues, and several serine, threonine and tyrosine sites can be phosphorylated. Transmembrane domain analysis showed that SpZIP2 has the classic eight transmembrane regions. The evolutionary analysis found that SpZIP2 is closely related to OsZIP2, followed by AtZIP11, OsZIP1 and AtZIP2. Sequence alignment showed that most of the conserved sequences among these members were located in the transmembrane regions. A further metal sensitivity assay using yeast mutant Δyap1 showed that the expression of SpZIP2 increased the sensitivity of the transformants to Cd but failed to change the resistance to Zn. The subsequent ion content determination showed that the expression of SpZIP2 increased the accumulation of Cd in yeast. Subcellular localization showed that SpZIP2 was localized to membrane systems, including the plasma membrane and endoplasmic reticulum. The above results indicate that ZIP member SpZIP2 participates in the uptake and accumulation of Cd into cells and might contribute to Cd hyperaccumulation in S. plumbizincicola.
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Affiliation(s)
- Tian-Long Han
- College of Agronomy, Hunan Agricultural University, Changsha 410128, China
| | - Ting-Wei Tang
- College of Agronomy, Hunan Agricultural University, Changsha 410128, China
| | - Pei-Hong Zhang
- School of Life and Health Sciences, Hunan University of Science and Technology, Xiangtan 411201, China
| | - Min Liu
- Xiaoxiang College, Hunan University of Science and Technology, Xiangtan 411201, China
| | - Jing Zhao
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China
| | - Jia-Shi Peng
- School of Life and Health Sciences, Hunan University of Science and Technology, Xiangtan 411201, China
- Correspondence: (J.-S.P.); (S.M.)
| | - Shuan Meng
- College of Agronomy, Hunan Agricultural University, Changsha 410128, China
- Hunan Provincial Key Laboratory of Rice Stress Biology, Changsha 410128, China
- Correspondence: (J.-S.P.); (S.M.)
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Tran L, Meng S, Wang P, Pan I, Yi T, Wang R, Jiao Z, Bai H. Abstract No. 240 Automated outcome prediction in mechanical thrombectomy for acute large vessel ischemic stroke using 3D convolutional neural networks applied to CT angiography. J Vasc Interv Radiol 2022. [DOI: 10.1016/j.jvir.2022.03.321] [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: 11/26/2022] Open
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Freilinger A, Kaserer K, Zettinig G, Pruidze P, Reissig LF, Rossmann T, Weninger WJ, Meng S. Ultrasound for the detection of the pyramidal lobe of the thyroid gland. J Endocrinol Invest 2022; 45:1201-1208. [PMID: 35157251 PMCID: PMC9098552 DOI: 10.1007/s40618-022-01748-z] [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] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Accepted: 01/16/2022] [Indexed: 12/03/2022]
Abstract
PURPOSE The pyramidal lobe (PL) is an ancillary lobe of the thyroid gland that can be affected by the same pathologies as the rest of the gland. We aimed to assess the diagnostic performance of high-resolution sonography in the detection of the PL with verification by dissection and histological examination. METHODS In a prospective, cross-sectional mono-center study, 50 fresh, non-embalmed cadavers were included. Blinded ultrasound examination was performed to detect the PL by two investigators of different experience levels. If the PL was detected with ultrasound, dissection was performed to expose the PL and obtain a tissue sample. When no PL was detected with ultrasound, a tissue block of the anterior cervical region was excised. An endocrine pathologist microscopically examined all tissue samples and tissue blocks for the presence of thyroid parenchyma. RESULTS The prevalence of the PL was 80% [40/50; 95% CI (68.9%; 91.1%)]. Diagnostic performance for both examiners was: sensitivity (85.0%; 42.5%), specificity (50.0%; 60.0%), positive predictive value (87.2%; 81.0%), negative predictive value (45.5%; 21.0%) and accuracy (78.0%; 46.0%). Regression analysis demonstrated that neither thyroid parenchyma echogenicity, thyroid gland volume, age nor body size proved to be covariates in the accurate detection of a PL (p > .05). CONCLUSION We report that high-resolution ultrasound is an adequate examination modality to detect the PL. Our findings indicate a higher prevalence than previously reported. Therefore, the PL may be regarded as a regular part of the thyroid gland. We also advocate a dedicated assessment of the PL in routine thyroid ultrasound.
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Affiliation(s)
- A Freilinger
- Division of Anatomy, Center for Anatomy and Cell Biology, Medical University Vienna, Waehringer Str. 13, 1090, Vienna, Austria
| | - K Kaserer
- Laboratory Kaserer, Koperek und Beer OG, Reisnerstraße 5, 1030, Vienna, Austria
| | - G Zettinig
- Thyroid Center "Schilddrüsenpraxis Josefstadt", Laudongasse 12, 1080, Vienna, Austria
| | - P Pruidze
- Division of Anatomy, Center for Anatomy and Cell Biology, Medical University Vienna, Waehringer Str. 13, 1090, Vienna, Austria
| | - L F Reissig
- Division of Anatomy, Center for Anatomy and Cell Biology, Medical University Vienna, Waehringer Str. 13, 1090, Vienna, Austria
| | - T Rossmann
- Division of Anatomy, Center for Anatomy and Cell Biology, Medical University Vienna, Waehringer Str. 13, 1090, Vienna, Austria
- Department of Neurosurgery, Neuromed Campus, Kepler University Hospital, Wagner-Jauregg-Weg 15, 4020, Linz, Austria
| | - W J Weninger
- Division of Anatomy, Center for Anatomy and Cell Biology, Medical University Vienna, Waehringer Str. 13, 1090, Vienna, Austria
| | - S Meng
- Division of Anatomy, Center for Anatomy and Cell Biology, Medical University Vienna, Waehringer Str. 13, 1090, Vienna, Austria.
- Department of Radiology, Hanusch Hospital Vienna, Heinrich-Collin-Straße 30, 1140, Vienna, Austria.
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Peng Y, Chen Y, Yuan Y, Liu B, Yu P, Song S, Yi Y, Teng Z, Yi Z, Zhang J, Meng S, Ye N, Duan M. Post‐anthesis saline‐alkali stress inhibits grain filling by promoting ethylene production and signal transduction. Food Energy Secur 2022. [DOI: 10.1002/fes3.384] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Affiliation(s)
- Yaqiong Peng
- Hunan Provincial Key Laboratory of Rice Stress Biology Hunan Agricultural University Changsha China
- Hengyang Academy of Agricultural Sciences Hengyang China
| | - Yinke Chen
- Hunan Provincial Key Laboratory of Rice Stress Biology Hunan Agricultural University Changsha China
| | | | - Bohan Liu
- Hunan Provincial Key Laboratory of Rice Stress Biology Hunan Agricultural University Changsha China
| | - Peng Yu
- Bureau of Agriculture and Rural Affairs of Hengshan County Hengyang China
| | - Shihao Song
- Hunan Provincial Key Laboratory of Rice Stress Biology Hunan Agricultural University Changsha China
| | - Yake Yi
- Hunan Provincial Key Laboratory of Rice Stress Biology Hunan Agricultural University Changsha China
| | - Zhenning Teng
- Hunan Provincial Key Laboratory of Rice Stress Biology Hunan Agricultural University Changsha China
| | - Zhenxie Yi
- Hunan Provincial Key Laboratory of Rice Stress Biology Hunan Agricultural University Changsha China
- College of Agriculture Hunan Agricultural University Changsha China
| | - Jianhua Zhang
- Department of Biology Hong Kong Baptist University Kowloon China
- School of Life Sciences and State Key Laboratory of Agrobiotechnology The Chinese University of Hong Kong Shatin China
| | - Shuan Meng
- Hunan Provincial Key Laboratory of Rice Stress Biology Hunan Agricultural University Changsha China
- College of Agriculture Hunan Agricultural University Changsha China
| | - Nenghui Ye
- Hunan Provincial Key Laboratory of Rice Stress Biology Hunan Agricultural University Changsha China
- College of Agriculture Hunan Agricultural University Changsha China
| | - Meijuan Duan
- Hunan Provincial Key Laboratory of Rice Stress Biology Hunan Agricultural University Changsha China
- College of Agriculture Hunan Agricultural University Changsha China
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Yi Y, Peng Y, Song T, Lu S, Teng Z, Zheng Q, Zhao F, Meng S, Liu B, Peng Y, Chen G, Zhang J, Ye N. NLP2-NR Module Associated NO Is Involved in Regulating Seed Germination in Rice under Salt Stress. Plants (Basel) 2022; 11:plants11060795. [PMID: 35336677 PMCID: PMC8953764 DOI: 10.3390/plants11060795] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 03/12/2022] [Accepted: 03/14/2022] [Indexed: 05/24/2023]
Abstract
Salt stress has the most severe impact on plant growth and development, including seed germination. However, little is known about the mechanism of NR (nitrate reductase)-associated nitric oxide (NO) regulates salt tolerance during seed germination in rice. Herein, we shown that inhibition of seed germination by salt stress was significantly impaired by sodium nitroferricyanide (SNP), a NO donor. Then a triple mutant, nr1/nr2/nr3, was generated. Results shown that germination of triple mutants were delayed and were much more sensitive to salt stress than WT plant, which can be rescued by application of SNP. qPCR analysis revealed that expressions of abscisic acid (ABA) catabolism gene, OsABA8ox1, was suppressed in triple mutants under salt stress, resulting in an elevated ABA content. Similar to SNP, application of nitrate also rescued seed germination under salt stress, which, however, was blocked in the triple mutants. Further study revealed that a nitrate responsive transcript factor, OsNLP2, was induced by salt stress, which thus up-regulates the expression of OsNRs and NR activity, resulting in promoted salt tolerance during seed germination. In addition, nitrate-mediated salt tolerance was impaired in mutant of aba8ox1, a target gene for NLP2. Transient trans-activation assays further revealed NLP2 can significantly activate the expression of OsABA8ox1 and OsNR1, suggesting that NLP2 activates expression of ABA catabolism gene directly or indirectly via NR-associated NO. Taken together, our results demonstrate that NLP2-NR associated NO was involved in salt response by increasing ABA catabolism during seed germination and highlight the importance of NO for stress tolerance of plants.
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Affiliation(s)
- Yake Yi
- College of Agriculture, Hunan Agricultural University, Changsha 410128, China; (Y.Y.); (Y.P.); (S.L.); (Z.T.); (Q.Z.); (F.Z.); (S.M.); (B.L.); (Y.P.)
| | - Yaqiong Peng
- College of Agriculture, Hunan Agricultural University, Changsha 410128, China; (Y.Y.); (Y.P.); (S.L.); (Z.T.); (Q.Z.); (F.Z.); (S.M.); (B.L.); (Y.P.)
| | - Tao Song
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China;
| | - Siqiong Lu
- College of Agriculture, Hunan Agricultural University, Changsha 410128, China; (Y.Y.); (Y.P.); (S.L.); (Z.T.); (Q.Z.); (F.Z.); (S.M.); (B.L.); (Y.P.)
| | - Zhenning Teng
- College of Agriculture, Hunan Agricultural University, Changsha 410128, China; (Y.Y.); (Y.P.); (S.L.); (Z.T.); (Q.Z.); (F.Z.); (S.M.); (B.L.); (Y.P.)
| | - Qin Zheng
- College of Agriculture, Hunan Agricultural University, Changsha 410128, China; (Y.Y.); (Y.P.); (S.L.); (Z.T.); (Q.Z.); (F.Z.); (S.M.); (B.L.); (Y.P.)
| | - Fankai Zhao
- College of Agriculture, Hunan Agricultural University, Changsha 410128, China; (Y.Y.); (Y.P.); (S.L.); (Z.T.); (Q.Z.); (F.Z.); (S.M.); (B.L.); (Y.P.)
| | - Shuan Meng
- College of Agriculture, Hunan Agricultural University, Changsha 410128, China; (Y.Y.); (Y.P.); (S.L.); (Z.T.); (Q.Z.); (F.Z.); (S.M.); (B.L.); (Y.P.)
| | - Bohang Liu
- College of Agriculture, Hunan Agricultural University, Changsha 410128, China; (Y.Y.); (Y.P.); (S.L.); (Z.T.); (Q.Z.); (F.Z.); (S.M.); (B.L.); (Y.P.)
| | - Yan Peng
- College of Agriculture, Hunan Agricultural University, Changsha 410128, China; (Y.Y.); (Y.P.); (S.L.); (Z.T.); (Q.Z.); (F.Z.); (S.M.); (B.L.); (Y.P.)
| | - Guanghui Chen
- College of Agriculture, Hunan Agricultural University, Changsha 410128, China; (Y.Y.); (Y.P.); (S.L.); (Z.T.); (Q.Z.); (F.Z.); (S.M.); (B.L.); (Y.P.)
| | - Jianhua Zhang
- Department of Biology, Hong Kong Baptist University, Kowloon, Hong Kong 999077, China
- School of Life Sciences, State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Shatin, Hong Kong 999077, China
| | - Nenghui Ye
- College of Agriculture, Hunan Agricultural University, Changsha 410128, China; (Y.Y.); (Y.P.); (S.L.); (Z.T.); (Q.Z.); (F.Z.); (S.M.); (B.L.); (Y.P.)
- Hunan Provincial Key Laboratory of Rice Stress Biology, Hunan Agricultural University, Changsha 410128, China
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11
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Teng Z, Yu H, Wang G, Meng S, Liu B, Yi Y, Chen Y, Zheng Q, Liu L, Yang J, Duan M, Zhang J, Ye N. Synergistic interaction between ABA and IAA due to moderate soil drying promotes grain filling of inferior spikelets in rice. Plant J 2022; 109:1457-1472. [PMID: 34921476 DOI: 10.1111/tpj.15642] [Citation(s) in RCA: 4] [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: 06/23/2021] [Revised: 12/05/2021] [Accepted: 12/11/2021] [Indexed: 06/14/2023]
Abstract
Poor grain filling of inferior spikelets is becoming a severe problem in some super rice varieties with large panicles. Moderate soil drying (MD) after pollination has been proven to be a practical strategy to promote grain filling. However, the molecular mechanisms underlying this phenomenon remain largely unexplored. Here, transcriptomic analysis of the most active grain filling stage revealed that both starch metabolism and phytohormone signaling were significantly promoted by MD treatment, accompanied by increased enzyme activities of starch synthesis and elevated abscisic acid (ABA) and indole-3-acetic acid (IAA) content in the inferior spikelet. Moreover, the IAA biosynthesis genes OsYUC11 and OsTAR2 were upregulated, while OsIAA29 and OsIAA24, which encode two repressors of auxin signaling, were downregulated by MD, implying a regulation of both IAA biosynthesis and auxin signal transduction in the inferior spikelet by MD. A notable improvement in grain filling of the inferior spikelet was found in the aba8ox2 mutant, which is mutated in an ABA catabolism gene. In contrast, overexpression of OsABA8ox2 significantly reduced grain filling. Interestingly, not only the IAA content, but also the expression of IAA biosynthesis and auxin-responsive genes displayed a similar trend to that in the inferior spikelet under MD. In addition, several OsTPP genes were downregulated in the inferior spikelets of both MD/ABA-treated wild-type plants and the aba8ox2 mutant, resulting in lower trehalose content and higher levels of -6-phosphate (T6P), thereby increasing the expression of OsTAR2, a target of T6P. Taken together, our results suggest that the synergistic interaction of ABA-mediated accumulation of IAA promotes grain filling of inferior spikelets under MD.
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Affiliation(s)
- Zhenning Teng
- College of Agriculture, Hunan Agricultural University, Changsha, 410128, China
- Hunan Provincial Key Laboratory of Rice Stress Biology, Hunan Agricultural University, Changsha, 410128, China
| | - Huihui Yu
- College of Agriculture, Hunan Agricultural University, Changsha, 410128, China
- Hunan Provincial Key Laboratory of Rice Stress Biology, Hunan Agricultural University, Changsha, 410128, China
| | - Guanqun Wang
- Department of Biology, Hong Kong Baptist University, Kowloon, Hong Kong, China
| | - Shuan Meng
- College of Agriculture, Hunan Agricultural University, Changsha, 410128, China
| | - Bohan Liu
- College of Agriculture, Hunan Agricultural University, Changsha, 410128, China
| | - Yake Yi
- College of Agriculture, Hunan Agricultural University, Changsha, 410128, China
| | - Yinke Chen
- College of Agriculture, Hunan Agricultural University, Changsha, 410128, China
| | - Qin Zheng
- College of Agriculture, Hunan Agricultural University, Changsha, 410128, China
| | - Ling Liu
- College of Agriculture, Hunan Agricultural University, Changsha, 410128, China
| | - Jianchang Yang
- Key Laboratory of Crop Genetics and Physiology of Jiangsu Province, Yangzhou University, Yangzhou, Jiangsu, China
| | - Meijuan Duan
- College of Agriculture, Hunan Agricultural University, Changsha, 410128, China
- Hunan Provincial Key Laboratory of Rice Stress Biology, Hunan Agricultural University, Changsha, 410128, China
| | - Jianhua Zhang
- Department of Biology, Hong Kong Baptist University, Kowloon, Hong Kong, China
- School of Life Sciences and State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Shatin, Hong Kong, China
| | - Nenghui Ye
- College of Agriculture, Hunan Agricultural University, Changsha, 410128, China
- Hunan Provincial Key Laboratory of Rice Stress Biology, Hunan Agricultural University, Changsha, 410128, China
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12
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Soler JM, Neretnieks I, Moreno L, Liu L, Meng S, Svensson U, Iraola A, Ebrahimi H, Trinchero P, Molinero J, Vidstrand P, Deissmann G, Říha J, Hokr M, Vetešník A, Vopálka D, Gvoždík L, Polák M, Trpkošová D, Havlová V, Park DK, Ji SH, Tachi Y, Ito T, Gylling B, Lanyon GW. Predictive Modeling of a Simple Field Matrix Diffusion Experiment Addressing Radionuclide Transport in Fractured Rock. Is It So Straightforward? NUCL TECHNOL 2021. [DOI: 10.1080/00295450.2021.1988822] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | - J. Říha
- Technical University of Liberec, Czech Republic
| | - M. Hokr
- Technical University of Liberec, Czech Republic
| | - A. Vetešník
- Czech Technical University in Prague, Czech Republic
| | - D. Vopálka
- Czech Technical University in Prague, Czech Republic
| | | | | | | | | | | | - S.-H. Ji
- KAERI, Daejeon, Republic of Korea
| | | | | | - B. Gylling
- Gylling GeoSolutions, Evanston, Illinois
| | - G. W. Lanyon
- Fracture Systems Ltd, St Ives, Cornwall, United Kindgom
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13
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Lloyd-Hughes J, Oppeneer PM, Pereira Dos Santos T, Schleife A, Meng S, Sentef MA, Ruggenthaler M, Rubio A, Radu I, Murnane M, Shi X, Kapteyn H, Stadtmüller B, Dani KM, da Jornada FH, Prinz E, Aeschlimann M, Milot RL, Burdanova M, Boland J, Cocker T, Hegmann F. The 2021 ultrafast spectroscopic probes of condensed matter roadmap. J Phys Condens Matter 2021; 33:353001. [PMID: 33951618 DOI: 10.1088/1361-648x/abfe21] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Accepted: 05/05/2021] [Indexed: 06/12/2023]
Abstract
In the 60 years since the invention of the laser, the scientific community has developed numerous fields of research based on these bright, coherent light sources, including the areas of imaging, spectroscopy, materials processing and communications. Ultrafast spectroscopy and imaging techniques are at the forefront of research into the light-matter interaction at the shortest times accessible to experiments, ranging from a few attoseconds to nanoseconds. Light pulses provide a crucial probe of the dynamical motion of charges, spins, and atoms on picosecond, femtosecond, and down to attosecond timescales, none of which are accessible even with the fastest electronic devices. Furthermore, strong light pulses can drive materials into unusual phases, with exotic properties. In this roadmap we describe the current state-of-the-art in experimental and theoretical studies of condensed matter using ultrafast probes. In each contribution, the authors also use their extensive knowledge to highlight challenges and predict future trends.
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Affiliation(s)
- J Lloyd-Hughes
- Department of Physics, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, United Kingdom
| | - P M Oppeneer
- Department of Physics and Astronomy, Uppsala University, PO Box 516, S-75120 Uppsala, Sweden
| | - T Pereira Dos Santos
- Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, United States of America
| | - A Schleife
- Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, United States of America
- Materials Research Laboratory, University of Illinois at Urbana-Champaign, Urbana, IL 61801, United States of America
- National Center for Supercomputing Applications, University of Illinois at Urbana-Champaign, Urbana, IL 61801, United States of America
| | - S Meng
- Institute of Physics, Chinese Academy of Sciences, Beijing, People's Republic of China
| | - M A Sentef
- Max Planck Institute for the Structure and Dynamics of Matter, Center for Free Electron Laser Science (CFEL), 22761 Hamburg, Germany
| | - M Ruggenthaler
- Max Planck Institute for the Structure and Dynamics of Matter, Center for Free Electron Laser Science (CFEL), 22761 Hamburg, Germany
| | - A Rubio
- Max Planck Institute for the Structure and Dynamics of Matter, Center for Free Electron Laser Science (CFEL), 22761 Hamburg, Germany
- Nano-Bio Spectroscopy Group and ETSF, Universidad del País Vasco UPV/EHU 20018 San Sebastián, Spain
- Center for Computational Quantum Physics (CCQ), The Flatiron Institute, 162 Fifth Avenue, New York, NY, 10010, United States of America
| | - I Radu
- Department of Physics, Freie Universität Berlin, Germany
- Max Born Institute, Berlin, Germany
| | - M Murnane
- JILA, University of Colorado and NIST, Boulder, CO, United States of America
| | - X Shi
- JILA, University of Colorado and NIST, Boulder, CO, United States of America
| | - H Kapteyn
- JILA, University of Colorado and NIST, Boulder, CO, United States of America
| | - B Stadtmüller
- Department of Physics and Research Center OPTIMAS, University of Kaiserslautern, 67663 Kaiserslautern, Germany
| | - K M Dani
- Femtosecond Spectroscopy Unit, Okinawa Institute of Science and Technology Graduate University, Onna-son, Japan
| | - F H da Jornada
- Department of Materials Science and Engineering, Stanford University, Stanford, 94305, CA, United States of America
| | - E Prinz
- Department of Physics and Research Center OPTIMAS, University of Kaiserslautern, 67663 Kaiserslautern, Germany
| | - M Aeschlimann
- Department of Physics and Research Center OPTIMAS, University of Kaiserslautern, 67663 Kaiserslautern, Germany
| | - R L Milot
- Department of Physics, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, United Kingdom
| | - M Burdanova
- Department of Physics, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, United Kingdom
| | - J Boland
- Photon Science Institute, Department of Electrical and Electronic Engineering, University of Manchester, United Kingdom
| | - T Cocker
- Michigan State University, United States of America
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14
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Meng S, Lee D, Cantos A. Abstract No. 167 Interventional radiology procedure volume changes during the COVID-19 pandemic. J Vasc Interv Radiol 2021. [PMCID: PMC8079610 DOI: 10.1016/j.jvir.2021.03.173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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15
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Meng S, Chengazi H, Butani D, Lee D, Cantos A. Abstract No. 129 Pilot initiative of tube labeling in interventional radiology as a means to reduce medical errors and improve overall understanding among referring services. J Vasc Interv Radiol 2021. [DOI: 10.1016/j.jvir.2021.03.135] [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: 10/21/2022] Open
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16
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Peng JS, Guan YH, Lin XJ, Xu XJ, Xiao L, Wang HH, Meng S. Comparative understanding of metal hyperaccumulation in plants: a mini-review. Environ Geochem Health 2021; 43:1599-1607. [PMID: 32060864 DOI: 10.1007/s10653-020-00533-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [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: 07/27/2019] [Accepted: 01/29/2020] [Indexed: 05/14/2023]
Abstract
Hyperaccumulator plants are ideal models for investigating the regulatory mechanisms of plant metal homeostasis and environmental adaptation due to their notable traits of metal accumulation and tolerance. These traits may benefit either the biofortification of essential mineral nutrients or the phytoremediation of nonessential toxic metals. A common mechanism by which elevated expression of key genes involved in metal transport or chelation contributes to hyperaccumulation and hypertolerance was proposed mainly from studies examining two Brassicaceae hyperaccumulators, namely Arabidopsis halleri and Noccaea caerulescens (formerly Thlaspi caerulescens). Meanwhile, recent findings regarding systems outside the Brassicaceae hyperaccumulators indicated that functional enhancement of key genes might represent a strategy evolved by hyperaccumulator plants. This review provides a brief outline of metal hyperaccumulation in plants and highlights commonalities and differences among various hyperaccumulators.
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Affiliation(s)
- Jia-Shi Peng
- Key Laboratory of Ecological Remediation and Safe Utilization of Heavy Metal-Polluted Soils, College of Life Science, Hunan University of Science and Technology, Xiangtan, 411201, Hunan, China.
| | - Yu-Hao Guan
- Key Laboratory of Ecological Remediation and Safe Utilization of Heavy Metal-Polluted Soils, College of Life Science, Hunan University of Science and Technology, Xiangtan, 411201, Hunan, China
| | - Xian-Jing Lin
- Key Laboratory of Ecological Remediation and Safe Utilization of Heavy Metal-Polluted Soils, College of Life Science, Hunan University of Science and Technology, Xiangtan, 411201, Hunan, China
| | - Xiao-Jing Xu
- Key Laboratory of Ecological Remediation and Safe Utilization of Heavy Metal-Polluted Soils, College of Life Science, Hunan University of Science and Technology, Xiangtan, 411201, Hunan, China
| | - Lu Xiao
- Key Laboratory of Ecological Remediation and Safe Utilization of Heavy Metal-Polluted Soils, College of Life Science, Hunan University of Science and Technology, Xiangtan, 411201, Hunan, China
| | - Hai-Hua Wang
- Key Laboratory of Ecological Remediation and Safe Utilization of Heavy Metal-Polluted Soils, College of Life Science, Hunan University of Science and Technology, Xiangtan, 411201, Hunan, China
| | - Shuan Meng
- Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, College of Agronomy, Hunan Agricultural University, Changsha, 410128, Hunan, China.
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17
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Qiu M, Zhou Z, Meng S, Li H, Li Q, Wang J. 29MO Early-stage lung cancer detection by a noninvasive breath test. J Thorac Oncol 2021. [DOI: 10.1016/s1556-0864(21)01871-2] [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: 10/21/2022]
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18
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Li X, Song L, Xu S, Tippin M, Meng S, Xie J, Uchio E, Zi X. Kava root extracts hinder prostate cancer development and tumorigenesis by involvement of dual inhibition of MAO-A and LSD1. J Transl Genet Genom 2021; 5:163-172. [PMID: 34368644 PMCID: PMC8341175 DOI: 10.20517/jtgg.2021.22] [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] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
AIM Here, we aim to evaluate the chemopreventive efficacy of kava root extracts (KRE) in transgenic adenocarcinoma of the mouse prostate (TRAMP) mice and investigate potential molecular targets of kavalactones, the main components of kava. METHODS TRAMP mice were administrated with KRE formulated food for different periods of time, and then the incidences of high-grade prostatic intraepithelial neoplasia (HG-PIN) and adenocarcinomas and tumor burdens were compared between vehicle control and KRE food fed groups. In addition, the inhibitory effect of the KRE and kavalactones on monoamine oxidase A (MAO-A) and lysine-specific demethylase 1 (LSD1) enzyme activities were examined by commercially available inhibitor screening kits. Histone H3 lysine 9 dimethylation was also evaluated in prostate cancer cells and tumor tissues using Western blotting analysis. RESULTS Dietary feeding of 0.3% and 0.6% KRE to TRAMP mice from ages of 6 weeks to 12 weeks inhibited HG-PIN by 43.5% and 59.7%, respectively, and prostate adenocarcinoma by 53.5% and 66.4%, respectively. In addition, 0.6% KRE fed TRAMP mice from ages of 6 weeks to 24 weeks exhibited a significant reduction of genitourinary weight (a surrogate of tumor burden) by 54.5% and reduced body weight gain. Furthermore, the KRE and kavalactones showed a significant inhibition of LSD1 and MAO-A enzyme activities. CONCLUSION Our results suggest that consumption of kava products through diet can delay prostate cancer development and progression and that kavalactones may be a new structure model for developing a potent dual inhibitor of LSD1 and MAO-A.
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Affiliation(s)
- Xuesen Li
- Department of Urology, University of California, Irvine, Orang, CA 92868, USA
| | - Liankun Song
- Department of Urology, University of California, Irvine, Orang, CA 92868, USA
| | - Shan Xu
- Department of Urology, University of California, Irvine, Orang, CA 92868, USA
| | - Matthew Tippin
- Department of Urology, University of California, Irvine, Orang, CA 92868, USA
| | - Shuan Meng
- Department of Urology, University of California, Irvine, Orang, CA 92868, USA
| | - Jun Xie
- Department of Urology, University of California, Irvine, Orang, CA 92868, USA
| | - Edward Uchio
- Department of Urology, University of California, Irvine, Orang, CA 92868, USA.,Chao Family Comprehensive Cancer Center, University of California, Orange, CA 92868, USA
| | - Xiaolin Zi
- Department of Urology, University of California, Irvine, Orang, CA 92868, USA.,Chao Family Comprehensive Cancer Center, University of California, Orange, CA 92868, USA.,Department of Pharmaceutical Sciences, University of California, Irvine, Irvine, CA 92617, USA
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19
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Li J, Zhang C, Si H, Gu S, Liu X, Li D, Meng S, Yang X, Li S. Brain-specific monoallelic expression of bovine UBE3A is associated with genomic position. Anim Genet 2020; 52:47-54. [PMID: 33200847 DOI: 10.1111/age.13023] [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] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/17/2020] [Indexed: 11/30/2022]
Abstract
Genomic imprinting is a rare epigenetic process in mammalian cells that leads to monoallelic expression of a gene with a parent-specific pattern. The UBE3A (ubiquitin protein ligase E3A) gene is imprinted with maternal allelic expression in the brain but biallelically expressed in all other tissues in humans. The silencing of the paternal UBE3A allele is thought to be caused by the paternally expressed antisense RNA transcript of UBE3A-ATS. The aberrant imprinted expression of the UBE3A is associated with several neurodevelopmental syndromes and psychological disorders. Cattle are a valuable model species in determining the genetic etiology of sporadic human disorder, and maternal expression of UEB3A has been revealed by next-generation sequencing study in the bovine conceptus. In this study, we investigated the allelic expression of UBE3A and UBE3A-ATS in adult bovine somatic tissues. To confirm the splicing pattern of bovine UBE3A, five 5' alternative transcripts (MT210534-MT210538) were first obtained from bovine brain tissue by RT-PCR. Based on 10 SNP genotypes, we found that the brain-specific monoallelic expression of bovine UBE3A did not occur along the entire locus, and there was a shift from biallelic expression to monoallelic expression in exon 14 of the UBE3A gene. However, the brain-specific monoallelic expression of bovine UBE3A-ATS occurred in the entire gene. These observations demonstrated that the monoallelic expression did not occur along the bovine UBE3A entire locus and was associated with the genomic position.
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Affiliation(s)
- J Li
- College of Life Science, Agricultural University of Hebei, Baoding, Hebei, China
| | - C Zhang
- College of Life Science, Agricultural University of Hebei, Baoding, Hebei, China
| | - H Si
- College of Life Science, Agricultural University of Hebei, Baoding, Hebei, China
| | - S Gu
- College of Life Science, Agricultural University of Hebei, Baoding, Hebei, China
| | - X Liu
- College of Life Science, Agricultural University of Hebei, Baoding, Hebei, China
| | - D Li
- College of Bioscience and Bioengineering, Hebei University of Science and Technology, Shijiazhuang, Hebei, China
| | - S Meng
- College of Life Science, Agricultural University of Hebei, Baoding, Hebei, China
| | - X Yang
- College of Life Science, Agricultural University of Hebei, Baoding, Hebei, China
| | - S Li
- College of Life Science, Agricultural University of Hebei, Baoding, Hebei, China
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20
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Wang G, Li H, Meng S, Yang J, Ye N, Zhang J. Analysis of Global Methylome and Gene Expression during Carbon Reserve Mobilization in Stems under Soil Drying. Plant Physiol 2020; 183:1809-1824. [PMID: 32513834 PMCID: PMC7401115 DOI: 10.1104/pp.20.00141] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Accepted: 06/01/2020] [Indexed: 05/18/2023]
Abstract
In rice (Oryza sativa), a specific temporary source organ, the stem, is important for grain filling, and moderate soil drying (MD) enhanced carbon reserve flow from stems to increase grain yield. The dynamics and biological relevance of DNA methylation in carbon reserve remobilization during grain filling are unknown. Here, we generated whole-genome single-base resolution maps of the DNA methylome in the stem. During grain filling under MD, we observed an increase in DNA methylation of total cytosines, with more hypomethylated than hypermethylated regions. Genes responsible for DNA methylation and demethylation were up-regulated, suggesting that DNA methylation changes in the stem were regulated by antagonism between DNA methylation and demethylation activity. In addition, methylation in the CG and CHG contexts was negatively associated with gene expression, while that in the CHH context was positively associated with gene expression. A hypermethylated/up-regulated transcription factor of MYBS2 inhibited MYB30 expression and possibly enhanced β-Amylase5 expression, promoting subsequent starch degradation in rice stems under MD treatment. In addition, a hypermethylated/down-regulated transcription factor of ERF24 was predicted to interact with, and thereby decrease the expression of, abscisic acid 8'-hydroxylase1, thus increasing abscisic acid concentration under MD treatment. Our findings provide insight into the DNA methylation dynamics in carbon reserve remobilization of rice stems, demonstrate that MD increased this remobilization, and suggest a link between DNA methylation and gene expression in rice stems during grain filling.
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Affiliation(s)
- Guanqun Wang
- School of Life Sciences and State Key Laboratory of Agrobiotechnology, Chinese University of Hong Kong, Shatin 99077, Hong Kong
- Department of Biology, Hong Kong Baptist University, Kowloon 99077, Hong Kong
| | - Haoxuan Li
- School of Life Sciences and State Key Laboratory of Agrobiotechnology, Chinese University of Hong Kong, Shatin 99077, Hong Kong
- Department of Biology, Hong Kong Baptist University, Kowloon 99077, Hong Kong
| | - Shuan Meng
- Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, College of Agriculture, Hunan Agricultural University, Changsha 410128, China
| | - Jianchang Yang
- Key Laboratory of Crop Genetics and Physiology of Jiangsu Province, Yangzhou University, Yangzhou, Jiangsu 225099, China
| | - Nenghui Ye
- School of Life Sciences and State Key Laboratory of Agrobiotechnology, Chinese University of Hong Kong, Shatin 99077, Hong Kong
- Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, College of Agriculture, Hunan Agricultural University, Changsha 410128, China
| | - Jianhua Zhang
- School of Life Sciences and State Key Laboratory of Agrobiotechnology, Chinese University of Hong Kong, Shatin 99077, Hong Kong
- Department of Biology, Hong Kong Baptist University, Kowloon 99077, Hong Kong
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21
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Lakhotia H, Kim HY, Zhan M, Hu S, Meng S, Goulielmakis E. Laser picoscopy of valence electrons in solids. Nature 2020; 583:55-59. [PMID: 32612227 DOI: 10.1038/s41586-020-2429-z] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Accepted: 05/01/2020] [Indexed: 11/09/2022]
Abstract
Valence electrons contribute a small fraction of the total electron density of materials, but they determine their essential chemical, electronic and optical properties. Strong laser fields can probe electrons in valence orbitals1-3 and their dynamics4-6 in the gas phase. Previous laser studies of solids have associated high-harmonic emission7-12 with the spatial arrangement of atoms in the crystal lattice13,14 and have used terahertz fields to probe interatomic potential forces15. Yet the direct, picometre-scale imaging of valence electrons in solids has remained challenging. Here we show that intense optical fields interacting with crystalline solids could enable the imaging of valence electrons at the picometre scale. An intense laser field with a strength that is comparable to the fields keeping the valence electrons bound in crystals can induce quasi-free electron motion. The harmonics of the laser field emerging from the nonlinear scattering of the valence electrons by the crystal potential contain the critical information that enables picometre-scale, real-space mapping of the valence electron structure. We used high harmonics to reconstruct images of the valence potential and electron density in crystalline magnesium fluoride and calcium fluoride with a spatial resolution of about 26 picometres. Picometre-scale imaging of valence electrons could enable direct probing of the chemical, electronic, optical and topological properties of materials.
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Affiliation(s)
- H Lakhotia
- Institut für Physik, Universität Rostock, Rostock, Germany.,Max-Planck-Institut für Quantenoptik, Garching, Germany
| | - H Y Kim
- Institut für Physik, Universität Rostock, Rostock, Germany.,Max-Planck-Institut für Quantenoptik, Garching, Germany
| | - M Zhan
- Institut für Physik, Universität Rostock, Rostock, Germany.,Max-Planck-Institut für Quantenoptik, Garching, Germany
| | - S Hu
- Institute of Physics, Chinese Academy of Sciences, Beijing, China
| | - S Meng
- Institute of Physics, Chinese Academy of Sciences, Beijing, China
| | - E Goulielmakis
- Institut für Physik, Universität Rostock, Rostock, Germany. .,Max-Planck-Institut für Quantenoptik, Garching, Germany.
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Lin JH, Xu ZJ, Peng JS, Zhao J, Zhang GB, Xie J, Yi ZX, Zhang JH, Gong JM, Ye NH, Meng S. OsProT1 and OsProT3 Function to Mediate Proline- and γ-aminobutyric acid-specific Transport in Yeast and are Differentially Expressed in Rice (Oryza sativa L.). Rice (N Y) 2019; 12:79. [PMID: 31707526 PMCID: PMC6842372 DOI: 10.1186/s12284-019-0341-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2019] [Accepted: 10/21/2019] [Indexed: 05/31/2023]
Abstract
BACKGROUND Proline (Pro) and γ-aminobutyric acid (GABA) play important roles in plant development and stress tolerance. However, the molecular components responsible for the transport of these molecules in rice remain largely unknown. RESULTS Here we identified OsProT1 and OsProT3 as functional transporters for Pro and GABA. Transient expression of eGFP-OsProTs in plant protoplasts revealed that both OsProT1 and OsProT3 are localized to the plasma membrane. Ectopic expression in a yeast mutant demonstrated that both OsProT1 and OsProT3 specifically mediate transport of Pro and GABA with affinity for Pro in the low affinity range. qRT-PCR analyses suggested that OsProT1 was preferentially expressed in leaf sheathes during vegetative growth, while OsProT3 exhibited relatively high expression levels in several tissues, including nodes, panicles and roots. Interestingly, both OsProT1 and OsProT3 were induced by cadmium stress in rice shoots. CONCLUSIONS Our results suggested that plasma membrane-localized OsProT1 and OsProT3 efficiently transport Pro and GABA when ectopically expressed in yeast and appear to be involved in various physiological processes, including adaption to cadmium stress in rice plants.
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Affiliation(s)
- Jin-Hong Lin
- Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, College of Agronomy, Hunan Agricultural University, Changsha, 410128 China
| | - Zhi-Jun Xu
- Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, College of Agronomy, Hunan Agricultural University, Changsha, 410128 China
| | - Jia-Shi Peng
- Key Laboratory of Ecological Remediation and Safe Utilization of Heavy Metal-Polluted Soils, College of Life Science, Hunan University of Science and Technology, Xiangtan, 411201 China
| | - Jing Zhao
- Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, College of Agronomy, Hunan Agricultural University, Changsha, 410128 China
| | - Guo-Bin Zhang
- State Key Laboratory of Crop Biology, College of Agronomy, Shandong Agricultural University, Taian, 271018 Shandong China
| | - Jun Xie
- Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, College of Agronomy, Hunan Agricultural University, Changsha, 410128 China
| | - Zhen-Xie Yi
- Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, College of Agronomy, Hunan Agricultural University, Changsha, 410128 China
| | - Jian-Hua Zhang
- Department of Biology, Hong Kong Baptist University, Kowloon, 999077 Hong Kong
- School of Life Sciences and State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Shatin, 999077 Hong Kong
| | - Ji-Ming Gong
- National Key Laboratory of Plant Molecular Genetics and CAS center for excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, 200032 China
| | - Neng-Hui Ye
- Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, College of Agronomy, Hunan Agricultural University, Changsha, 410128 China
| | - Shuan Meng
- Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, College of Agronomy, Hunan Agricultural University, Changsha, 410128 China
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Wang J, Zhao J, Bai H, Wang X, Wang Y, Duan J, Chen H, Meng S, Tian Y, Huang DL, Wu YL. A phase IIIb open-label study of afatinib in EGFR TKI-naïve patients (pts) with EGFR mutation-positive (EGFRm+) NSCLC: Exploratory biomarker analysis. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz436.001] [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: 11/13/2022] Open
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Abstract
CLINICAL ISSUE Due to the high prevalence of clinically suspected cholecystitis or cholecystolithiasis the gallbladder is one of the organs examined the most by imaging. STANDARD RADIOLOGICAL METHODS In most clinical settings ultrasound is the primary imaging method because of its wide availability, speed and superior spatial resolution. In cases of ambiguous findings or potential complications computed tomography (CT) and magnetic resonance imaging (MRI) are used. METHODICAL INNOVATIONS When specific problems arise these imaging modalities may be enhanced by special techniques, e. g. contrast-enhanced ultrasound or dual-energy CT, and specific MRI sequences. PERFORMANCE Special variants of cholecystitis, such as xanthogranulomatous cholecystitis and adenomyomatosis, may pose a particularly difficult diagnostic problem as they may resemble other diseases. Sequelae of cholecystolithiasis, such as the Mirizzi syndrome and acute bowel obstruction, may complicate the imaging algorithm as the location and the symptoms shift. Cases of neoplastic diseases of gallbladder cancer and other malignancies require a broad spectrum of imaging modalities. ACHIEVEMENTS Although the gallbladder can easily be examined with ultrasound, some cases require a more thorough ultrasound examination. In some cases only a combination of multiple imaging modalities yield the diagnosis. Further developments regarding technical issues and the diagnostic algorithm can be expected. PRACTICAL RECOMMENDATIONS Ultrasound is the best first imaging modality. In cases of ambiguous findings or clinical complications CT or MRI are recommended.
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Affiliation(s)
- H Kopf
- Abteilung für Diagnostische und Interventionelle Radiologie, Göttlicher Heiland Krankenhaus, Vinzenzgruppe, Wien, Österreich
| | - W Schima
- Abteilung für Diagnostische und Interventionelle Radiologie, Göttlicher Heiland Krankenhaus, Vinzenzgruppe, Wien, Österreich
| | - S Meng
- Radiologie, KFJ Spital, Wien, Österreich.
- Zentrum für Anatomie und Zellbiologie, Medizinische Universität Wien, Währinger Str. 13, 1090, Wien, Österreich.
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25
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Sun C, Meng S, Ye RX, Wu YJ, Wang QZ, Cao M, Zhou H. [A study on the association between the infant anemia and the utilization of maternal and child health services in ethnic minorities gathering in poverty-stricken rural areas of two provinces in Western China]. Zhonghua Yu Fang Yi Xue Za Zhi 2019; 53:330-333. [PMID: 30841678 DOI: 10.3760/cma.j.issn.0253-9624.2019.03.019] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
In this study, 1 065 infants and young children aged 24 months below in ethnic minorities gathering in poor rural areas in poor rural areas of Liangshan Yi Autonomous Prefecture of Sichuan Province and Gannan Tibetan Autonomous Prefecture of Gansu Province were investigated for their anemia status from October to November 2014, and the association between anemia and the utilization of maternal and child health services was analyzed. The prevalence of anemia in this area was 52.68%(561/1 065). After the adjustment of socio-demographic characteristics of mothers and infants, compared with infants aged 2-5 months, Han ethnic group, and infants whose mother was not anemic, the OR(95%CI) values of infant anemia for infants aged 6-12 months, 13-8 months, 19-24 months, ethnic minorities group, and infants whose mother was anemic were 11.65 (7.09-19.14), 9.91 (5.99-16.38), 5.87 (3.39-10.16), 1.55 (1.10-2.18) and 1.52 (1.14-2.04), respectively; Compared with infants whose child examination times not up to standard, and who were not only non-hospital delivered but also received inadequate number of inoculation, the OR (95%CI) values of infant anemia for infants whose child examination times up to standard, and who were not only hospital delivered but also received adequate number of inoculation were 0.60 (0.38-0.94) and 0.71 (0.52-0.98), respectively. The infants anemia is associated with the utilization of maternal and child health services.
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Affiliation(s)
- C Sun
- West China School of Public Health, Sichuan University, Chengdu 610041, China
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Kopf H, Schima W, Meng S. Erratum zu: Differenzialdiagnose von Befunden an der Gallenblase. Radiologe 2019; 59:368. [DOI: 10.1007/s00117-019-0518-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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27
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Yan GS, Li LL, Jiang SL, Meng S, Wu CC. [Clinical study of different adsorbents with dual plasma molecular adsorption system in the treatment of hepatic failure]. Zhonghua Gan Zang Bing Za Zhi 2019; 27:51-55. [PMID: 30685924 DOI: 10.3760/cma.j.issn.1007-3418.2019.01.011] [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] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Objective: To investigate the effects of two different sorbents(Carbon perfusion apparatus and Resin perfusion apparatus)in Double plasma molecular absorb syetem for liver failure treatment. Methods: A total of 152 cases with liver failure who were admitted to The Sixth People's Hospital of Zhengzhou, from June 2016 to May 2018 were selected and divided into DPMARS Carbon group (77 cases) and Resin group (75 cases). The two groups were observed in terms of liver function, prothrombin activity(PTA),Plasma albumin ,tumor necrosis factor alpha and interleukin-6 were detected and compared between the two groups before and after treatment. Results: ①The clinical symptoms improved in different degree in two groups, the recovery rate of Carbon cans Carbon perfusion apparatus group and Resin group separately were89.6% (69/77)、90.7% (68/75)(χ(2) = 0.048, P = 0.975), there were no statistical differences. There were no statistical differences between the two groups in untoward reactions(χ(2) = 0.235, P = 0.995), ②Compared with before treatment, TBil(t = 3.735, 3.728; P = 0.000, 0.000)、ALT(t = 5.117, 5.203; P = 0.000, 0.000)、TNF-α (t = 3.158, 3.094; P = 0.000, 0.002)、IL-6(t = 3.647, 3.559; P = 0.002, 0.003)decreased and ALB (t = 2.300, 3.065; P = 0.024, 0.003) increased significantly after treatment in both groups, and there were statistical differences. There were no signifiant differences in the changes in ALB(t = 0.316, 0.209; P = 0.657, 0.720) and PTA(t = 0.810, 0.843; P = 0.429, 0.516). ③After treatment, there were no signifiant differences in the changes in TBil、ALT、ALB、PTA、TNF-α、IL-6(t = 0.377、0.904、-1.133、-1.552、0.841、0.401; P = 0.952、0.283、0.826、0.094、0.154、0.457). Conclusion: Double plasma molecular absorb syetem is effective in treating liver failure. Carbon perfusion apparatus or Resin perfusion apparatus can be combined with Specific bilirubin adsorption column for DPMARS in clinical treatment,and their effects are similar.
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Affiliation(s)
- G S Yan
- Department of Blood Purification, the Sixth People's Hospital of Zhengzhou, Zhengzhou 450000, China
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Wang GQ, Li HX, Feng L, Chen MX, Meng S, Ye NH, Zhang J. Transcriptomic analysis of grain filling in rice inferior grains under moderate soil drying. J Exp Bot 2019; 70:1597-1611. [PMID: 30690492 PMCID: PMC6411378 DOI: 10.1093/jxb/erz010] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [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: 05/01/2018] [Accepted: 01/08/2019] [Indexed: 05/18/2023]
Abstract
Moderate soil drying imposed at the post-anthesis stage significantly increases starch accumulation in inferior grains of rice, but how this process is regulated at the level of gene expression remains unclear. In this study, we applied moderate drying (MD) treatments to the soil at the post-anthesis stage and followed the dynamics of the conversion process of soluble sugars to starch in inferior grains using RNA-seq analysis. An elevated level of ABA induced by MD was consistently associated with down-regulation of ABA8ox2, suggesting that lower expression of this gene may be responsible for the higher ABA content, potentially resulting in better filling in inferior grains. In addition, MD treatments up-regulated genes encoding five key enzymes involved sucrose-to-starch conversion and increased the activities of enzymes responsible for soluble-sugar reduction and starch accumulation in inferior grains. Differentially expressed transcription factors, including NAC, GATA, WRKY, and M-type MADS, were predicted to interact with other proteins in mediating filling of inferior grains as a response to MD. Transient expression analysis showed that NAC activated WAXY expression by binding to its promoter, indicating that NAC played a key role in starch synthesis of inferior grains under MD treatment. Our results provide new insights into the molecular mechanisms that regulate grain filling in inferior grains of rice under moderate soil drying.
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Affiliation(s)
- Guan-Qun Wang
- Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, Hunan Agricultural University, Changsha, China
- Department of Biology, Hong Kong Baptist University, Kowloon, Hong Kong
| | - Hao-Xuan Li
- Department of Biology, Hong Kong Baptist University, Kowloon, Hong Kong
| | - Lei Feng
- School of Life Sciences and State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - Mo-Xian Chen
- Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, China
| | - Shuan Meng
- Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, Hunan Agricultural University, Changsha, China
| | - Neng-Hui Ye
- Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, Hunan Agricultural University, Changsha, China
- Department of Biology, Hong Kong Baptist University, Kowloon, Hong Kong
| | - Jianhua Zhang
- Department of Biology, Hong Kong Baptist University, Kowloon, Hong Kong
- School of Life Sciences and State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Shatin, Hong Kong
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Li W, Gai M, Rutkowski S, He W, Meng S, Gorin D, Dai L, He Q, Frueh J. An Automated Device for Layer-by-Layer Coating of Dispersed Superparamagnetic Nanoparticle Templates. Colloid J 2019. [DOI: 10.1134/s1061933x18060078] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Meng S, Mao J, Rouse EN, Le-Bel G, Bourget JM, Reed RR, Philippe E, How D, Zhang Z, Germain L, Guidoin R. The Red Kangaroo pericardium as a material source for the manufacture of percutaneous heart valves. Morphologie 2019; 103:37-47. [PMID: 30638803 DOI: 10.1016/j.morpho.2018.12.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [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: 09/20/2018] [Accepted: 12/06/2018] [Indexed: 11/28/2022]
Abstract
BACKGROUND The kangaroo pericardium might be considered to be a good candidate material for use in the manufacture of the leaflets of percutaneous heart valves based upon the unique lifestyle. The diet consists of herbs, forbs and strubs. The kangaroo pericardium holds an undulated structure of collagen. MATERIAL AND METHOD A Red Kangaroo was obtained after a traffic fatality and the pericardium was dissected. Four compasses were cut from four different sites: auricular (AUR), atrial (ATR), sternoperitoneal (SPL) and phrenopericardial (PPL). They were investigated by means of scanning electron microscopy, light microscopy and transmission electron microscopy. RESULTS All the samples showed dense and wavy collagen bundles without vascularisation from both the epicardium and the parietal pericardium. The AUR and the ATR were 150±25μm thick whereas the SPL and the PPL were thinner at 120±20μm. The surface of the epicardium was smooth and glistening. The filaments of collagen were well individualized without any aggregation, but the banding was poorly defined and somewhat blurry. CONCLUSION This detailed morphological analysis of the kangaroo pericardium illustrated a surface resistant to thrombosis and physical characteristics resistant to fatigue. The morphological characteristics of the kangaroo pericardium indicate that it represents an outstanding alternative to the current sources e.g., bovine and porcine. However, procurement of tissues from the wild raises supply and sanitary issues. Health concerns based upon sanitary uncertainty and reliability of supply of wild animals remain real problems.
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Affiliation(s)
- S Meng
- Chongqing Key Lab of Catalysis and Functional Organic Molecules; College of Environment and Biotechnology, Chongqing Technology and Business University, Chongqing, PR China
| | - J Mao
- Axe Médecine Régénératrice, Centre de Recherche du CHU and Département de Chirurgie, Faculté de Médecine, Université Laval, Québec Canada
| | - E N Rouse
- Department of Comparative Medicine, College of Veterinary of Tennessee, Knoxville, TN, USA
| | - G Le-Bel
- Axe Médecine Régénératrice, Centre de Recherche du CHU and Département de Chirurgie, Faculté de Médecine, Université Laval, Québec Canada
| | - J M Bourget
- Axe Médecine Régénératrice, Centre de Recherche du CHU and Département de Chirurgie, Faculté de Médecine, Université Laval, Québec Canada
| | - R R Reed
- Department of Comparative Medicine, College of Veterinary of Tennessee, Knoxville, TN, USA
| | - E Philippe
- Axe Médecine Régénératrice, Centre de Recherche du CHU and Département de Chirurgie, Faculté de Médecine, Université Laval, Québec Canada
| | - D How
- Peninsula College of Medicine and Dentistry (PCMD), Plymouth, Devon, UK
| | - Z Zhang
- Axe Médecine Régénératrice, Centre de Recherche du CHU and Département de Chirurgie, Faculté de Médecine, Université Laval, Québec Canada
| | - L Germain
- Axe Médecine Régénératrice, Centre de Recherche du CHU and Département de Chirurgie, Faculté de Médecine, Université Laval, Québec Canada
| | - R Guidoin
- Axe Médecine Régénératrice, Centre de Recherche du CHU and Département de Chirurgie, Faculté de Médecine, Université Laval, Québec Canada.
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Zhang GB, Meng S, Gong JM. The Expected and Unexpected Roles of Nitrate Transporters in Plant Abiotic Stress Resistance and Their Regulation. Int J Mol Sci 2018; 19:ijms19113535. [PMID: 30423982 PMCID: PMC6274899 DOI: 10.3390/ijms19113535] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [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: 10/22/2018] [Revised: 11/05/2018] [Accepted: 11/07/2018] [Indexed: 11/22/2022] Open
Abstract
Nitrate transporters are primarily responsible for absorption of nitrate from soil and nitrate translocation among different parts of plants. They deliver nitrate to where it is needed. However, recent studies have revealed that nitrate transporters are extensively involved in coping with adverse environmental conditions besides limited nitrate/nitrogen availability. In this review, we describe the functions of the nitrate transporters related to abiotic stresses and their regulation. The expected and unexpected roles of nitrate transporters in plant abiotic stress resistance will also be discussed.
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Affiliation(s)
- Guo-Bin Zhang
- State Key Laboratory of Crop Biology and College of Agronomy, Shandong Agricultural University, Taian 271018, Shandong, China.
| | - Shuan Meng
- Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, College of Agronomy, Hunan Agricultural University, Changsha 410128, Hunan, China.
| | - Ji-Ming Gong
- National Key Laboratory of Plant Molecular Genetics and CAS Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai 200031, China.
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Strobel D, Meng S. Diagnostic ultrasound performed by a physician as a dialog. Ultraschall Med 2018; 39:251-252. [PMID: 29879748 DOI: 10.1055/a-0593-8473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
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Jiang J, Meng S, Huang S, Ruan Y, Lu X, Li JZ, Wu N, Huang J, Xie Z, Liang B, Deng J, Zhou B, Chen X, Ning C, Liao Y, Wei W, Lai J, Ye L, Wu F, Liang H. Effects of Talaromyces marneffei infection on mortality of HIV/AIDS patients in southern China: a retrospective cohort study. Clin Microbiol Infect 2018; 25:233-241. [PMID: 29698815 DOI: 10.1016/j.cmi.2018.04.018] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [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: 01/09/2018] [Revised: 04/17/2018] [Accepted: 04/18/2018] [Indexed: 10/17/2022]
Abstract
OBJECTIVE Talaromyces marneffei is an opportunistic infection with high morbidity among human immunodeficiency virus (HIV)/AIDS patients in Southeast Asia and southern China. Its effects on mortality in HIV/AIDS patients has not been clearly elucidated. METHODS We conducted a retrospective cohort study of hospitalized HIV-infected individuals at the Fourth People's Hospital of Nanning, Guangxi, China during 2012-2015. Kaplan-Meier analyses were used to calculate the cumulative mortality. Cox proportional hazard models and 1:1 propensity score matching (PSM) were used to evaluate the effects of T. marneffei infection on mortality of HIV/AIDS patients. RESULTS In total, 6791 HIV/AIDS patients were included, 1093 of them (16.1%) with documented T. marneffei co-infection. The mortality of T. marneffei-infected patients (25.0 per 100 person-months, 95% CI 21.5-26.7) was the highest among all AIDS-associated complications and was significantly higher than that of T. marneffei-uninfected HIV/AIDS patients (13.8 per 100 person-months, 95% CI 12.5-15.1; adjusted hazard ratio (AHR) 1.80, 95% CI 1.48-2.16). The results using PSM were similar (AHR 4.52 95% CI 2.43-8.42). The mortality of T. marneffei-infected patients was also significantly higher than that of patients without any complications. When stratified by demographic characteristics, T. marneffei infection has higher mortality risk in all stratifications. Co-infection with T. marneffei carries a higher mortality risk in patients at any CD4+ T-cell count. CONCLUSIONS Talaromyces marneffei infection is commonly found in hospitalized HIV/AIDS patients in southern China and was associated with a higher mortality rate than most HIV-associated complications. These results highlight the need for improved diagnosis, treatment and prevention of infection by this neglected fungal pathogen in southern China.
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Affiliation(s)
- J Jiang
- Guangxi Key Laboratory of AIDS Prevention and Treatment & Guangxi Universities Key Laboratory of Prevention and Control of Highly Prevalent Disease, School of Public Health, Guangxi Medical University, Nanning, Guangxi, China
| | - S Meng
- Guangxi Key Laboratory of AIDS Prevention and Treatment & Guangxi Universities Key Laboratory of Prevention and Control of Highly Prevalent Disease, School of Public Health, Guangxi Medical University, Nanning, Guangxi, China; Fourth People's Hospital of Nanning, Nanning, Guangxi, China
| | - S Huang
- Fourth People's Hospital of Nanning, Nanning, Guangxi, China
| | - Y Ruan
- State Key Laboratory of Infectious Disease Prevention and Control (SKLID), Collaborative Innovation Centre for Diagnosis and Treatment of Infectious Diseases, Chinese Centre for Disease Control and Prevention (China CDC), Beijing, China
| | - X Lu
- Fourth People's Hospital of Nanning, Nanning, Guangxi, China
| | - J Z Li
- Brigham and Women's Hospital, Harvard Medical School, Cambridge, MA, USA
| | - N Wu
- Fourth People's Hospital of Nanning, Nanning, Guangxi, China
| | - J Huang
- Guangxi Key Laboratory of AIDS Prevention and Treatment & Guangxi Universities Key Laboratory of Prevention and Control of Highly Prevalent Disease, School of Public Health, Guangxi Medical University, Nanning, Guangxi, China
| | - Z Xie
- Fourth People's Hospital of Nanning, Nanning, Guangxi, China
| | - B Liang
- Guangxi Key Laboratory of AIDS Prevention and Treatment & Guangxi Universities Key Laboratory of Prevention and Control of Highly Prevalent Disease, School of Public Health, Guangxi Medical University, Nanning, Guangxi, China
| | - J Deng
- Fourth People's Hospital of Nanning, Nanning, Guangxi, China
| | - B Zhou
- Guangxi Collaborative Innovation Centre for Biomedicine, Life Sciences Institute, Guangxi Medical University, Nanning, Guangxi, China
| | - X Chen
- Fourth People's Hospital of Nanning, Nanning, Guangxi, China
| | - C Ning
- Guangxi Collaborative Innovation Centre for Biomedicine, Life Sciences Institute, Guangxi Medical University, Nanning, Guangxi, China
| | - Y Liao
- Guangxi Collaborative Innovation Centre for Biomedicine, Life Sciences Institute, Guangxi Medical University, Nanning, Guangxi, China
| | - W Wei
- Guangxi Key Laboratory of AIDS Prevention and Treatment & Guangxi Universities Key Laboratory of Prevention and Control of Highly Prevalent Disease, School of Public Health, Guangxi Medical University, Nanning, Guangxi, China
| | - J Lai
- Guangxi Key Laboratory of AIDS Prevention and Treatment & Guangxi Universities Key Laboratory of Prevention and Control of Highly Prevalent Disease, School of Public Health, Guangxi Medical University, Nanning, Guangxi, China
| | - L Ye
- Guangxi Key Laboratory of AIDS Prevention and Treatment & Guangxi Universities Key Laboratory of Prevention and Control of Highly Prevalent Disease, School of Public Health, Guangxi Medical University, Nanning, Guangxi, China.
| | - F Wu
- Fourth People's Hospital of Nanning, Nanning, Guangxi, China.
| | - H Liang
- Guangxi Key Laboratory of AIDS Prevention and Treatment & Guangxi Universities Key Laboratory of Prevention and Control of Highly Prevalent Disease, School of Public Health, Guangxi Medical University, Nanning, Guangxi, China; Guangxi Collaborative Innovation Centre for Biomedicine, Life Sciences Institute, Guangxi Medical University, Nanning, Guangxi, China.
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Grisold A, Meng S, Ackerl M, Grisold W. Late effect of mantle-field radiotherapy. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3309] [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: 11/29/2022]
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Ackerl M, Grisold A, Surboeck B, Meng S, Giometto B, Grisold W. Lymphoma and mononeuropathies - A rare association. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3310] [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: 10/18/2022]
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Zhang Z, Li X, Cui L, Meng S, Ye N, Peng X. Catalytic and functional aspects of different isozymes of glycolate oxidase in rice. BMC Plant Biol 2017; 17:135. [PMID: 28789632 PMCID: PMC5549332 DOI: 10.1186/s12870-017-1084-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Accepted: 07/23/2017] [Indexed: 05/18/2023]
Abstract
BACKGROUND Glycolate oxidase (GLO) is a key enzyme for photorespiration in plants. There are four GLO genes encoding and forming different isozymes in rice, but their functional differences are not well understood. In this study, enzymatic and physiological characteristics of the GLO isozymes were comparatively analyzed. RESULTS When expressed heterologously in yeast, GLO1, GLO4 and GLO1 + 4 showed the highest activities and lowest K m for glycolate as substrate, whereas GLO3 displayed high activities and affinities for both glycolate and L-lactate, and GLO5 was catalytically inactive with all substrates tested. To further reveal the physiological role of each GLO isozyme in plants, various GLO genetically modified rice lines were generated and functionally analyzed. GLO activity was significantly increased both in GLO1 and GLO4 overexpression lines. Nevertheless, when either GLO1 or GLO4 was knocked out, the activity was suppressed much more significantly in GLO1 knockout lines than in GLO4 knockout lines, and both knockout mutants exhibited obvious dwarfism phenotypes. Among GLO3 and GLO5 overexpression lines and RNAi lines, only GLO3 overexpression lines showed significantly increased L-lactate-oxidizing activity but no other noticeable phenotype changes. CONCLUSIONS These results indicate that rice GLO isozymes have distinct enzymatic characteristics, and they may have different physiological functions in rice.
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Affiliation(s)
- Zhisheng Zhang
- Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, Hunan Agricultural University, Changsha, Hunan, 410128, China
| | - Xiangyang Li
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Life Sciences, South China Agricultural University, Guangzhou, Guangdong, 510642, China
| | - Lili Cui
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Life Sciences, South China Agricultural University, Guangzhou, Guangdong, 510642, China
| | - Shuan Meng
- Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, Hunan Agricultural University, Changsha, Hunan, 410128, China
| | - Nenghui Ye
- Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, Hunan Agricultural University, Changsha, Hunan, 410128, China
| | - Xinxiang Peng
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Life Sciences, South China Agricultural University, Guangzhou, Guangdong, 510642, China.
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Peng JS, Ding G, Meng S, Yi HY, Gong JM. Enhanced metal tolerance correlates with heterotypic variation in SpMTL, a metallothionein-like protein from the hyperaccumulator Sedum plumbizincicola. Plant Cell Environ 2017; 40:1368-1378. [PMID: 28152585 DOI: 10.1111/pce.12929] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [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: 04/05/2016] [Revised: 01/05/2017] [Accepted: 01/24/2017] [Indexed: 05/19/2023]
Abstract
Mechanistic insight into metal hyperaccumulation is largely restricted to Brassicaceae plants; therefore, it is of great importance to obtain corresponding knowledge from system outside the Brassicaceae. Here, we constructed and screened a cDNA library of the Cd/Zn hyperaccumulator Sedum plumbizincicola and identified a novel metallothionein-like protein encoding gene SpMTL. SpMTL showed functional similarity to other known MT proteins and also to its orthologues from non-hyperaccumulators. However, three additional cysteine residues were observed in SpMTL and appeared to be hyperaccumulator specific. Removal of these three residues significantly decreased its ability to tolerate Cd and the stoichiometry of Cd against SpMTL (molar ratio of Cd/SpMTL) to a level comparable to those of Cd/SaMTL and Cd/SeMTL in the corresponding non-hyperaccumulating relatives. SpMTL expressed in S. plumbizincicola roots at a much higher level than those of its orthologues in the non-hyperaccumulator roots. Interestingly, a positive correlation was observed between transcript levels of SpMTL in roots and Cd accumulation in leaves. Taking these results together, we propose that elevated transcript levels and heterotypic variation in protein sequences of SpMTL might contribute to the trait of Cd hyperaccumulation and hypertolerance in S. plumbizincicola.
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Affiliation(s)
- Jia-Shi Peng
- National Key Laboratory of Plant Molecular Genetics and National Center for Plant Gene Research (Shanghai), CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, 200032, China
| | - Ge Ding
- National Key Laboratory of Plant Molecular Genetics and National Center for Plant Gene Research (Shanghai), CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, 200032, China
- Crops Research Institute, Jiangxi Academy of Agricultural Sciences, Nanchang, 330200, China
| | - Shuan Meng
- National Key Laboratory of Plant Molecular Genetics and National Center for Plant Gene Research (Shanghai), CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, 200032, China
| | - Hong-Ying Yi
- National Key Laboratory of Plant Molecular Genetics and National Center for Plant Gene Research (Shanghai), CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, 200032, China
| | - Ji-Ming Gong
- National Key Laboratory of Plant Molecular Genetics and National Center for Plant Gene Research (Shanghai), CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, 200032, China
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Zhou L, Yang L, Zhou X, Lv X, Song J, Meng S, Yue J, Yang S, Ji L. A comparison of HbA 1c concentration in people with Type 2 diabetes at sea level and high altitude in China: an observational study. Diabet Med 2017; 34:862-864. [PMID: 28370237 DOI: 10.1111/dme.13356] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 03/21/2017] [Indexed: 11/29/2022]
Affiliation(s)
- L Zhou
- Department of Endocrinology and Metabolism, Peking University of People's Hospital, Beijing, China
| | - L Yang
- Department of Endocrinology, People's Hospital of Tibet Autonomous Region in Lhasa, Tibet, China
| | - X Zhou
- Department of Endocrinology and Metabolism, Peking University of People's Hospital, Beijing, China
| | - X Lv
- Department of Endocrinology, People's Hospital of Tibet Autonomous Region in Lhasa, Tibet, China
| | - J Song
- Department of Endocrinology, People's Hospital of Tibet Autonomous Region in Lhasa, Tibet, China
| | - S Meng
- Department of Endocrinology, People's Hospital of Tibet Autonomous Region in Lhasa, Tibet, China
| | - J Yue
- Department of Endocrinology, People's Hospital of Tibet Autonomous Region in Lhasa, Tibet, China
| | - S Yang
- Department of Endocrinology, People's Hospital of Tibet Autonomous Region in Lhasa, Tibet, China
| | - L Ji
- Department of Endocrinology and Metabolism, Peking University of People's Hospital, Beijing, China
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Zhou L, Song J, Yang S, Meng S, Lv X, Yue J, Mina A, Puchi B, Geng Y, Yang L. Bone mass loss is associated with systolic blood pressure in postmenopausal women with type 2 diabetes in Tibet: a retrospective cross-sectional study. Osteoporos Int 2017; 28:1693-1698. [PMID: 28154942 DOI: 10.1007/s00198-017-3930-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Accepted: 01/19/2017] [Indexed: 01/31/2023]
Abstract
UNLABELLED We conducted an observational cross-section study to investigate the status of bone mineral mass of Tibetan postmenopausal women with type 2 diabetes and the possible predictors for osteoporosis. We found that prevalence of osteoporosis was 27.0% and blood pressure was an independent risk factor for bone mass loss. INTRODUCTION The aims of this study is to investigate the prevalence of osteoporosis in postmenopausal women with type 2 diabetes dwelling in Tibet and the possible risk factors for bone mass loss. METHODS We recruited 99 Chinese Tibetan postmenopausal women with type 2 diabetes from the department of endocrinology of People's Hospital Tibet Autonomous Region. Multiple sites of bone mineral density (BMD) were measured by dual-energy X-ray absorptiometry (DXA). The subjects were divided into three groups based on BMD T-score: osteoporosis, osteopenia, and normal. The clinical characteristics were compared between groups. The risk factors for bone mass loss were assessed by multiple linear regression analysis. RESULTS Among diabetic postmenopausal women dwelling in high altitude, mean age was 62 ± 8 years, the median postmenopausal period was 12 years (5, 20), the median duration of diabetes mellitus was 3 years (1, 8), and mean BMI was 27.6 ± 4.2 kg/m2. Patients (52.5%) had hypertension. The percentages of patients with osteoporosis, osteopenia and normal BMD were 27.3, 42.4, and 30.3%, respectively. HbA1c and systolic blood pressure (SBP) were independently associated with T-scores of spine; ages and SBP were independently associated with T-scores of femoral neck or hip. CONCLUSIONS Among diabetic postmenopausal women dwelling in high altitude, 27.3% patients have osteoporosis, 42.4% patients have osteopenia, and 30.3% are normal. The BMD T-score of spine was inversely associated with SBP and positively associated with HbA1c, while the BMD T-score of femoral neck or hip was inversely associated with ages and SBP.
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MESH Headings
- Absorptiometry, Photon/methods
- Aged
- Altitude
- Blood Pressure/physiology
- Bone Density/physiology
- Bone Diseases, Metabolic/epidemiology
- Bone Diseases, Metabolic/etiology
- Bone Diseases, Metabolic/physiopathology
- Cross-Sectional Studies
- Diabetes Mellitus, Type 2/complications
- Diabetes Mellitus, Type 2/epidemiology
- Diabetes Mellitus, Type 2/physiopathology
- Female
- Humans
- Hypertension/complications
- Hypertension/epidemiology
- Hypertension/physiopathology
- Middle Aged
- Osteoporosis, Postmenopausal/epidemiology
- Osteoporosis, Postmenopausal/etiology
- Osteoporosis, Postmenopausal/physiopathology
- Prevalence
- Retrospective Studies
- Risk Factors
- Tibet/epidemiology
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Affiliation(s)
- L Zhou
- Department of Endocrinology and Metabolism, Peking University of People's Hospital, Beijing, China
| | - J Song
- Department of Endocrinology, People's Hospital of Tibet Autonomous Region, Lhasa, Tibet, China
| | - S Yang
- Department of Endocrinology, People's Hospital of Tibet Autonomous Region, Lhasa, Tibet, China
| | - S Meng
- Department of Endocrinology, People's Hospital of Tibet Autonomous Region, Lhasa, Tibet, China
| | - X Lv
- Department of Endocrinology, People's Hospital of Tibet Autonomous Region, Lhasa, Tibet, China
| | - J Yue
- Department of Endocrinology, People's Hospital of Tibet Autonomous Region, Lhasa, Tibet, China
| | - A Mina
- Department of Endocrinology, People's Hospital of Tibet Autonomous Region, Lhasa, Tibet, China
| | - B Puchi
- Department of Endocrinology, People's Hospital of Tibet Autonomous Region, Lhasa, Tibet, China
| | - Y Geng
- Department of Endocrinology, People's Hospital of Tibet Autonomous Region, Lhasa, Tibet, China
| | - L Yang
- Department of Endocrinology, People's Hospital of Tibet Autonomous Region, Lhasa, Tibet, China.
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Deng G, Ma J, Shen S, Li Q, Peng L, Meng S, Zhou J, Wu J, Liu D. Sofosbuvir Monotherapy for Asymptomatic and Noncirrhotic Hepatitis C Infection in a Renal Retransplantation Recipient: A Case Report. Transplant Proc 2017; 48:3120-3122. [PMID: 27932161 DOI: 10.1016/j.transproceed.2016.05.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2016] [Accepted: 05/04/2016] [Indexed: 12/13/2022]
Abstract
Renal transplant recipients infected with hepatitis C virus (HCV) have a high risk of progressing to cirrhosis, end-stage liver diseases, and hepatocellular carcinoma. It is also considered as an independent risk for graft loss and is correlated with proteinuria, transplant glomerulopathy, HCV-associated glomerulonephritis, and chronic rejection. Previous therapy involving interferon alfa and ribavirin led to treatment complications, including toxicity, anemia, sepsis, and drug-drug interactions with calcineurin inhibitors, as well as reduced tolerability and efficacy. New direct-acting antiviral drugs simplify and shorten the treatment along with increasing tolerability and efficacy. Nevertheless, limited data and no specific regimen with direct-acting antiviral drugs have been described in the literature for renal transplant recipients with chronic HCV. We describe here the case of a 52-year-old Chinese man who diagnosed with chronic renal failure in 1997 and underwent renal transplantation the same year. In 2012, he was diagnosed with renal graft failure and again underwent hemodialysis. The patient then underwent his second renal transplantation and was administered an immunosuppressive cyclosporine-based regimen in 2015. During hemodialysis, he acquired asymptomatic genotype 1b HCV infection. Serologic test results reflecting liver cirrhosis were all negative, and ultrasound showed no abnormalities in the liver. The patient later required oral sofosbuvir monotherapy for 12 weeks after the second kidney transplantation. Curing HCV in renal transplant recipients is necessary. Although our treatment did not successfully result in a sustained virologic response, it suggests that genotype 1b HCV may have a poor response to a sofosbuvir monotherapy regimen. Specific and effective regimens for renal transplant recipients with HCV infection need to be confirmed in the future.
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Affiliation(s)
- G Deng
- Department of Organ Transplantation, Guangdong No. 2 Provincial People's Hospital, Guangzhou, People's Republic of China
| | - J Ma
- Department of Organ Transplantation, Guangdong No. 2 Provincial People's Hospital, Guangzhou, People's Republic of China
| | - S Shen
- Department of Organ Transplantation, Guangdong No. 2 Provincial People's Hospital, Guangzhou, People's Republic of China
| | - Q Li
- Department of Organ Transplantation, Guangdong No. 2 Provincial People's Hospital, Guangzhou, People's Republic of China
| | - L Peng
- Department of Organ Transplantation, Guangdong No. 2 Provincial People's Hospital, Guangzhou, People's Republic of China
| | - S Meng
- Department of Organ Transplantation, Guangdong No. 2 Provincial People's Hospital, Guangzhou, People's Republic of China
| | - J Zhou
- Department of Organ Transplantation, Guangdong No. 2 Provincial People's Hospital, Guangzhou, People's Republic of China
| | - J Wu
- Department of Organ Transplantation, Guangdong No. 2 Provincial People's Hospital, Guangzhou, People's Republic of China
| | - D Liu
- Department of Organ Transplantation, Guangdong No. 2 Provincial People's Hospital, Guangzhou, People's Republic of China.
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41
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Ding Y, Zheng H, Feng C, Wang B, Liu C, Mi K, Cao H, Meng S. Heat-Shock Protein gp96 Enhances T Cell Responses and Protective Potential to Bacillus Calmette-Guérin Vaccine. Scand J Immunol 2017; 84:222-8. [PMID: 27417661 DOI: 10.1111/sji.12463] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Accepted: 07/12/2016] [Indexed: 01/28/2023]
Abstract
The commonly used Bacillus Calmette-Guérin (BCG) vaccine only induces moderate T cell responses and is less effective in protecting against pulmonary tuberculosis (TB) in adults and ageing populations. Thus, developing new TB vaccine candidates is an important strategy against the spread of Mycobacterium tuberculosis. Here, we demonstrated that immunization with heat-shock protein gp96 as an adjuvant led to a significantly increased CD4(+) and CD8(+) T cell response to a BCG vaccine. Secretion of the Th1-type cytokines was increased by splenocytes from gp96-immunized mice. In addition, adding gp96 as an adjuvant effectively improved the protection against intravenous challenge with Mycobacterium bovis BCG in mice. Our study reveals the novel property of gp96 in boosting the vaccine-specific T cell response and its potential use as an adjuvant for BCG vaccines against mycobacterial infection.
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Affiliation(s)
- Y Ding
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, China
| | - H Zheng
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences (CAS), Beijing, China
| | - C Feng
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences (CAS), Beijing, China
| | - B Wang
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences (CAS), Beijing, China
| | - C Liu
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences (CAS), Beijing, China
| | - K Mi
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences (CAS), Beijing, China
| | - H Cao
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, China.
| | - S Meng
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences (CAS), Beijing, China.
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Zhang BJ, Meng S. [Research progress on cardiovascular dysfunction in offspring conceived by assisted reproductive technology]. Zhonghua Xin Xue Guan Bing Za Zhi 2016; 44:1064-1067. [PMID: 28056241 DOI: 10.3760/cma.j.issn.0253-3758.2016.12.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Houston M, Rountree R, Lamb J, Phipps S, Meng S, Zhang B. A placebo-controlled trial of a proprietary lipid-lowering nutraceutical supplement in the management of dyslipidemia. J BIOL REG HOMEOS AG 2016; 30:1115-1123. [PMID: 28078862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
There is an ever growing emergence in the popularity of patient-driven care. As this health and wellness model grows, inquiries into diet, lifestyle, and supplemental approaches will continue to become a focal point for the healthcare consumer. Because of this, the aim of this study is to determine the tolerability, and overall effectiveness of a proprietary multi-ingredient lipid-lowering supplement in subjects with dyslipidemia. Forty participants were recruited for a single-center, double-blind randomized, placebocontrolled trial. Study participants were recruited between December 2014 and March 2015. Initial screening included a physical examination, renal and hepatic function, serum lipid, serum electrolytes, complete blood counts, and urine analysis. The 40 participants were randomly assigned to receive either the proprietary multi-ingredient lipid-lowering supplement (PMILLS) n= 20 or placebo n= 20. The trial consisted of a screening visit, a two-week run-in, and a four-month treatment period. Samples were taken at baseline, one month and four months of treatment. Results from the trial showed that the PMILLS significantly reduced total cholesterol (TC), low density lipoprotein (LDL-C), very low density lipoprotein (VLDL-C), oxidized LDL (oxLDL), Apo-lipoprotein B, triglycerides (TG), LDL particle number (LDL-P), heart rate, and diastolic blood pressure compared to placebo at one month and four months. The PMILLS significantly increased high density lipoprotein (HDL) particle number (HDL-P), and low density lipoprotein (LDL) particle size from dense type III and IV to larger type I and II LDL particle, compared to placebo at one month and four months. In addition, the PMILLS significantly reduced high sensitivity C-reactive protein (hs-CRP), tumor necrosis alpha (TNF-α), and interleukin 6 (IL-6) within the treatment group from baseline. There were no adverse effects noted in the treatment group after four months of supplementation. The present study demonstrates this PMILLS improves all relevant lipid parameters, such as particle numbers and particles sizes, as well as showing a significant reduction in inflammatory markers linked to cardiovascular health. With such combined changes in lipids, lipid sub-fractions, and inflammation, which are considered among the most effective means of reducing coronary heart disease (CHD), this PMILLS represents a new addition to safe and effective lipid-modifying strategies.
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Affiliation(s)
- M Houston
- Hypertension Institute of Nashville, Saint Thomas Hospital, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - R Rountree
- Thorne Research, Inc., Sandpoint, Idaho, USA
| | - J Lamb
- Hypertension Institute of Nashville, Saint Thomas Hospital, Nashville, Tennessee, USA
| | - S Phipps
- Thorne Research, Inc., Sandpoint, Idaho, USA
| | - S Meng
- Department of Epidemiology, Harvard School of Public Health, Boston, Massachusetts, USA
| | - B Zhang
- Thorne Research, Inc., Sandpoint, Idaho, USA
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Zheng Y, Qiu L, Fan L, Song C, Meng S, Chen J. Effect of polychlorinated biphenyls on osmoregulatory response and apoptosis in GIFT tilapia, Oreochromis niloticus. Genet Mol Res 2016; 15:gmr8620. [PMID: 27706697 DOI: 10.4238/gmr.15038620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
In the present study, GIFT tilapia Oreochromis niloticus were exposed to polychlorinated biphenyls (PCBs) for 7, 14, and 21 days. Over the duration of the exposure, genotoxicity and the activity of Na+/K+-ATPase (NKA) and Ca+/Mg+-ATPase (CMA) were measured in the gill, kidney, and intestine, to evaluate changes in osmoregulatory response in O. niloticus. Our results showed significant decreases in organic NKA (except in gill tissues after 0.5 mg/L PCB-exposure) and CMA activity. The results of the genotoxicity assay showed significant increases in atp1a1a, nkcc2 (only in gill tissue), and fxyd7 (except after 21 days of 5 mg/L PCB exposure). We found significant increases in caspase proteins in the liver in the 5-mg/L PCB exposure group, and the transcripts showed dose-dependent increases between treatment groups over the exposure duration. This study presents evidence that chronic exposure to PCB could result in organic osmoregulatory response and hepatic apoptosis in GIFT tilapia.
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Affiliation(s)
- Y Zheng
- Key Open Laboratory of Ecological Environment and Resources of Inland Fisheries, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi, Jiangsu, China .,Key Laboratory of Genetic Breeding and Aquaculture Biology of Freshwater Fishes, Scientific Observing and Experimental Station of Fishery Resources and Environment in the Lower Reaches of the Changjiang River, Ministry of Agriculture, Wuxi, Jiangsu, China .,Wuxi Fisheries College, Nanjing Agricultural University, Wuxi, Jiangsu, China
| | - L Qiu
- Key Open Laboratory of Ecological Environment and Resources of Inland Fisheries, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi, Jiangsu, China.,Key Laboratory of Genetic Breeding and Aquaculture Biology of Freshwater Fishes, Scientific Observing and Experimental Station of Fishery Resources and Environment in the Lower Reaches of the Changjiang River, Ministry of Agriculture, Wuxi, Jiangsu, China
| | - L Fan
- Key Open Laboratory of Ecological Environment and Resources of Inland Fisheries, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi, Jiangsu, China.,Key Laboratory of Genetic Breeding and Aquaculture Biology of Freshwater Fishes, Scientific Observing and Experimental Station of Fishery Resources and Environment in the Lower Reaches of the Changjiang River, Ministry of Agriculture, Wuxi, Jiangsu, China
| | - C Song
- Key Open Laboratory of Ecological Environment and Resources of Inland Fisheries, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi, Jiangsu, China.,Key Laboratory of Genetic Breeding and Aquaculture Biology of Freshwater Fishes, Scientific Observing and Experimental Station of Fishery Resources and Environment in the Lower Reaches of the Changjiang River, Ministry of Agriculture, Wuxi, Jiangsu, China
| | - S Meng
- Key Open Laboratory of Ecological Environment and Resources of Inland Fisheries, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi, Jiangsu, China.,Key Laboratory of Genetic Breeding and Aquaculture Biology of Freshwater Fishes, Scientific Observing and Experimental Station of Fishery Resources and Environment in the Lower Reaches of the Changjiang River, Ministry of Agriculture, Wuxi, Jiangsu, China
| | - J Chen
- Key Open Laboratory of Ecological Environment and Resources of Inland Fisheries, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi, Jiangsu, China.,Key Laboratory of Genetic Breeding and Aquaculture Biology of Freshwater Fishes, Scientific Observing and Experimental Station of Fishery Resources and Environment in the Lower Reaches of the Changjiang River, Ministry of Agriculture, Wuxi, Jiangsu, China.,Wuxi Fisheries College, Nanjing Agricultural University, Wuxi, Jiangsu, China
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Meng S, Yang XL, Dang PM, Cui SL, Mu GJ, Chen CY, Liu LF. Evaluation of insertion-deletion markers suitable for genetic diversity studies and marker-trait correlation analyses in cultivated peanut (Arachis hypogaea L.). Genet Mol Res 2016; 15:gmr8207. [PMID: 27525935 DOI: 10.4238/gmr.15038207] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Peanut is one of the most important oil crops worldwide. We used insertion-deletion (InDel) markers to assess the genetic diversity and population structure in cultivated peanut. Fifty-four accessions from North China were genotyped using 48 InDel markers. The markers amplified 61 polymorphic loci with 1 to 8 alleles and an average of 2.6 alleles per marker. The polymorphism information content values ranged from 0.0364 to 0.9030, with an average of 0.5038. Population structure and neighbor-joining (NJ) tree analyses suggested that all accessions could be divided into four clusters (A1-A4), using the NJ method. Likewise, four subpopulations (G1-G4) were identified using STRUCTURE analysis. A principal component analysis was also used and results concordant with the other analysis methods were found. A multi-linear stepwise regression analysis revealed that 13 InDel markers correlated with five measured agronomical traits. Our results will provide important information for future peanut molecular breeding and genetic research.
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Affiliation(s)
- S Meng
- North China Key Laboratory for Crop Germplasm Resources of Education Ministry, Laboratory for Crop Germplasm Resources of Hebei, College of Agronomy, Agricultural University of Hebei, Baoding, China
| | - X L Yang
- North China Key Laboratory for Crop Germplasm Resources of Education Ministry, Laboratory for Crop Germplasm Resources of Hebei, College of Agronomy, Agricultural University of Hebei, Baoding, China
| | - P M Dang
- USDA-ARS, National Peanut Research Laboratory, Dawson, GA, USA
| | - S L Cui
- North China Key Laboratory for Crop Germplasm Resources of Education Ministry, Laboratory for Crop Germplasm Resources of Hebei, College of Agronomy, Agricultural University of Hebei, Baoding, China
| | - G J Mu
- North China Key Laboratory for Crop Germplasm Resources of Education Ministry, Laboratory for Crop Germplasm Resources of Hebei, College of Agronomy, Agricultural University of Hebei, Baoding, China
| | - C Y Chen
- Department of Crop, Soil and Environmental Sciences, Auburn University, Auburn, AL, USA
| | - L F Liu
- North China Key Laboratory for Crop Germplasm Resources of Education Ministry, Laboratory for Crop Germplasm Resources of Hebei, College of Agronomy, Agricultural University of Hebei, Baoding, China
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Sun L, Meng S. Structure-based model profiles affinity constant of drugs with hPEPT1 for rapid virtual screening of hPEPT1's substrate. SAR QSAR Environ Res 2016; 27:637-652. [PMID: 27586363 DOI: 10.1080/1062936x.2016.1216010] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2016] [Accepted: 07/19/2016] [Indexed: 06/06/2023]
Abstract
The human proton-coupled peptide transporter (hPEPT1) with broad substrates is an important route for improving the pharmacokinetic performance of drugs. Thus, it is essential to predict the affinity constant between drug molecule and hPEPT1 for rapid virtual screening of hPEPT1's substrate during lead optimization, candidate selection and hPEPT1 prodrug design. Here, a structure-based in silico model for 114 compounds was constructed based on eight structural parameters. This model was built by the multiple linear regression method and satisfied all the prerequisites of the regression models. For the entire data set, the r(2) and adjusted r(2) values were 0.74 and 0.72, respectively. Then, this model was used to perform substrate/non-substrate classification. For 29 drugs from DrugBank database, all were correctly classified as substrates of hPEPT1. This model was also used to perform substrate/non-substrate classification for 18 drugs and their prodrugs; this QSAR model also can distinguish between the substrate and non-substrate. In conclusion, the QSAR model in this paper was validated by a large external data set, and all results indicated that the developed model was robust, stable, and can be used for rapid virtual screening of hPEPT1's substrate in the early stage of drug discovery.
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Affiliation(s)
- L Sun
- a Department of Pharmaceutics , School of Pharmacy, China Medical University , Shenyang , Liaoning , P.R. China
| | - S Meng
- a Department of Pharmaceutics , School of Pharmacy, China Medical University , Shenyang , Liaoning , P.R. China
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Li J, Yang H, Meng S, Zhou J, Ding Y. Metabonomic profiles reveal dose-dependent effects of Bu-Shen-Gu-Chi-Wan on the serum in experimental periodontitis of rat model. J Ethnopharmacol 2016; 193:248-254. [PMID: 27475973 DOI: 10.1016/j.jep.2016.07.051] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Revised: 06/28/2016] [Accepted: 07/16/2016] [Indexed: 02/05/2023]
Abstract
ETHNO-PHARMACOLOGICAL RELEVANCE Bu-Shen-Gu-Chi-Wan is a Chinese patent medicine for the treatment of chronic periodontitis. It has an anti-inflammatory function in experimental periodontitis and can improve alveolar bone remodeling. AIM OF THE STUDY This study aims to explore the effects of Bu-Shen-Gu-Chi-Wan on serum metabolism in a rat model of periodontitis using 1H nuclear magnetic resonance (1H NMR) based metabonomics. MATERIALS AND METHODS The model of experimental periodontitis in a rat was established by steel wire ligation, plus a high glucose diet and Porphyromonas gingivalis inoculation. When the models had been established, 6-week-old Sprague-Dawley female rats (n=31) were divided into 5 groups: high dose group (Group H), medium dose group (Group M), low dose group (Group L), periodontitis group (Group P) and healthy control group (Group N). Rats in Group H, M and L were given the Bu-Shen-Gu-Chi-Wan solution (0.8, 2 and 4g/kg of body weight) daily for 60 days. Rats in Group P and N were administered normal saline (10ml/kg of body weight) in the same period. All rats were sacrificed at the end of the study and serum samples were collected. The metabolites in the serum were analyzed using 1H NMR in conjunction with principal component analysis (PCA) and partial least squares discriminant analysis (PLS-DA). RESULTS The metabonomic profiles of five groups showed the clustering of individual dataset in every group, and the 1st principal component and the 2nd principal component could significantly differentiate the datasets of medium dose or high dose group from other groups. The chemical shift regions at δ 1.22ppm, 1.86ppm, 2.26ppm, 2.34ppm and 2.42ppm showed the most obvious differences among the five groups. The correspondent metabolites were high density lipoprotein, pyruvate/oxaloacetate, arginine and glutamine. CONCLUSION The effects of Bu-Shen-Gu-Chi-Wan on the rat serum metabolites were dose dependent. High density lipoprotein, pyruvate/oxaloacetate, arginine and glutamine may be the serum biomarkers of Bu-Shen-Gu-Chi-Wan.
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Affiliation(s)
- J Li
- Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, PR China; Department of Implantology, the Affiliated Hospital of Stomatology, Chongqing Medical University, Chongqing, PR China.
| | - H Yang
- Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, PR China; Department of Periodontology, West China Hospital of Stomatology, Sichuan University, Chengdu, PR China.
| | - S Meng
- Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, PR China; Department of Periodontology, West China Hospital of Stomatology, Sichuan University, Chengdu, PR China.
| | - J Zhou
- Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, PR China; Department of Oral and Maxillofacial Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, PR China.
| | - Y Ding
- Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, PR China; Department of Periodontology, West China Hospital of Stomatology, Sichuan University, Chengdu, PR China.
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Song HF, Li H, Li X, Yang D, Han J, Jia RF, Meng S, Jin ZN. [A comparison of the outcome of therapy between fractional flow reserve guided- versus coronary angiography guided-strategy in acute coronary syndrome patients with moderate coronary lesions]. Zhonghua Nei Ke Za Zhi 2016; 55:520-4. [PMID: 27373286 DOI: 10.3760/cma.j.issn.0578-1426.2016.07.007] [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] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To compare the outcomes between coronary angiography (CAG ) guided- and fractional flow reserve (FFR) guided-strategy in acute coronary syndrome (ACS) patients with moderate lesions. METHODS Totally, 249 ACS subjects with moderate lesions examined by CAG in Beijing Anzhen Hospital from July 1, 2014 to July 30, 2015 were included in the present analysis. Among them, 98 patients were further examined by FFR and 151 were not. All the patients were treated with medication either guided by CAG or by FFR. Subjects were followed up for an average of 10 months. The end points included death, nonfatal myocardial infarction (MI), target vessel revascularization (TVR), and hospitalization costs. Major adverse cardiac events (MACE) were defined as death, nonfatal MI, and TVR. RESULTS At the end of follow-up, 29 patients had MACE with 6 cases (6.5%) in the FFR-guided group, and 23 cases (16.2%) in the CAG-guided group (P=0.036). Patients treated with FFR-guided strategy had significantly lower rate of TVR than those treated with CAG-guided strategy (5.4% vs 14.8%, P=0.045). No statistical difference was observed in nonfatal MI (2.2% vs 3.5%, P=0.242) between the two groups, and no cardiac death occurred in the two groups. However, the rate of patients treated with stains (P=0.033) and the hospitalization costs (P=0.001) were significantly increased in the FFR-guided group. CONCLUSIONS FFR-guided strategy for patients with ACS results in lower TVR and MACE, but higher cost when compared with CAG-guided strategy.
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Affiliation(s)
- H F Song
- Thirty-three-ward, Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing 100029, China
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Wang X, Yan S, Liu C, Xu Y, Wan L, Wang Y, Gao W, Meng S, Liu Y, Liu R, Xu D. Fracture risk and bone mineral density levels in patients with systemic lupus erythematosus: a systematic review and meta-analysis. Osteoporos Int 2016; 27:1413-1423. [PMID: 26753541 DOI: 10.1007/s00198-015-3449-7] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/04/2015] [Accepted: 12/01/2015] [Indexed: 12/16/2022]
Abstract
Previous studies suggested possible bone loss and fracture risk in patients with systemic lupus erythematosus (SLE). The aim of this systematic review and meta-analysis was to assess the strength of the relationship of SLE with fracture risk and the mean difference of bone mineral density (BMD) levels between SLE patients and controls. Literature search was undertaken in multiple indexing databases on September 26, 2015. Studies on the relationship of SLE with fracture risk and the mean difference of BMD levels between SLE patients and controls were included. Data were combined using standard methods of meta-analysis. Twenty-one studies were finally included into the meta-analysis, including 15 studies on the mean difference of BMD levels between SLE patients and controls, and 6 studies were on fracture risk associated with SLE. The meta-analysis showed that SLE patients had significantly lower BMD levels than controls in the whole body (weighted mean difference [WMD] = -0.04; 95 % CI -0.06 to -0.02; P < 0.001), femoral neck (WMD = -0.06; 95 % CI -0.07 to -0.04; P < 0.001), lumbar spine (WMD = -0.06; 95 % CI -0.09 to -0.03; P < 0.001), and total hip (WMD = -0.05; 95 % CI -0.06 to -0.03; P < 0.001). In addition, the meta-analysis also showed that SLE was significantly associated with increased fracture risk of all sites (relative risk [RR] = 1.97, 95 % CI 1.20-3.25; P = 0.008). Subgroup analysis by adjustment showed that SLE was significantly associated with increased fracture risk of all sites before and after adjusting for confounding factors (unadjusted RR = 2.07, 95 % CI 1.46-2.94, P < 0.001; adjusted RR = 1.22, 95 % CI 1.05-1.42, P = 0.01). Subgroup analysis by types of fracture showed that SLE was significantly associated with increased risks of hip fracture (RR = 1.99, 95 % CI 1.55-2.57; P < 0.001), osteoporotic fracture (RR = 1.36, 95 % CI 1.21-1.53; P < 0.001), and vertebral fracture (RR = 2.97, 95 % CI 1.71-5.16; P < 0.001). This systematic review and meta-analysis provides strong evidence for the relationship of SLE with bone loss and fracture risk.
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Affiliation(s)
- X Wang
- Department of Rheumatology and Immunology, The Affiliated Hospital of Weifang Medical University, Weifang, 261000, Shandong Province, China
| | - S Yan
- Department of Anorectal Surgery, The Affiliated Hospital of Weifang Medical University, Weifang, 261000, China
| | - C Liu
- Clinical Laboratory, First Affiliated Hospital, Nanjing Medical University, Nanjing, 210029, China
| | - Y Xu
- Occupational Safety and Health Research Center of the State Administration of Work Safety, Beijing, 100000, China
| | - L Wan
- Department of Rheumatology and Immunology, The Affiliated Hospital of Weifang Medical University, Weifang, 261000, Shandong Province, China
| | - Y Wang
- Department of Rheumatology and Immunology, The Affiliated Hospital of Weifang Medical University, Weifang, 261000, Shandong Province, China
| | - W Gao
- Department of Rheumatology and Immunology, The Affiliated Hospital of Weifang Medical University, Weifang, 261000, Shandong Province, China
| | - S Meng
- Department of Rheumatology and Immunology, The Affiliated Hospital of Weifang Medical University, Weifang, 261000, Shandong Province, China
| | - Y Liu
- Department of Rheumatology and Immunology, The Affiliated Hospital of Weifang Medical University, Weifang, 261000, Shandong Province, China
| | - R Liu
- Department of Rheumatology and Immunology, The Affiliated Hospital of Weifang Medical University, Weifang, 261000, Shandong Province, China.
| | - D Xu
- Department of Rheumatology and Immunology, The Affiliated Hospital of Weifang Medical University, Weifang, 261000, Shandong Province, China.
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Meng S, Peng JS, He YN, Zhang GB, Yi HY, Fu YL, Gong JM. Arabidopsis NRT1.5 Mediates the Suppression of Nitrate Starvation-Induced Leaf Senescence by Modulating Foliar Potassium Level. Mol Plant 2016; 9:461-470. [PMID: 26732494 DOI: 10.1016/j.molp.2015.12.015] [Citation(s) in RCA: 79] [Impact Index Per Article: 9.9] [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: 11/14/2015] [Revised: 12/15/2015] [Accepted: 12/21/2015] [Indexed: 05/20/2023]
Abstract
Nitrogen deficiency induces leaf senescence. However, whether or how nitrate might affect this process remains to be investigated. Here, we report an interesting finding that nitrate-instead of nitrogen-starvation induced early leaf senescence in nrt1.5 mutant, and present genetic and physiological data demonstrating that nitrate starvation-induced leaf senescence is suppressed by NRT1.5. NRT1.5 suppresses the senescence process dependent on its function from roots, but not the nitrate transport function. Further analyses using nrt1.5 single and nia1 nia2 nrt1.5-4 triple mutant showed a negative correlation between nitrate concentration and senescence rate in leaves. Moreover, when exposed to nitrate starvation, foliar potassium level decreased in nrt1.5, but adding potassium could essentially restore the early leaf senescence phenotype of nrt1.5 plants. Nitrate starvation also downregulated the expression of HAK5, RAP2.11, and ANN1 in nrt1.5 roots, and appeared to alter potassium level in xylem sap from nrt1.5. These data suggest that NRT1.5 likely perceives nitrate starvation-derived signals to prevent leaf senescence by facilitating foliar potassium accumulation.
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Affiliation(s)
- Shuan Meng
- National Key Laboratory of Plant Molecular Genetics, National Center for Plant Gene Research (Shanghai), CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200032, People's Republic of China
| | - Jia-Shi Peng
- National Key Laboratory of Plant Molecular Genetics, National Center for Plant Gene Research (Shanghai), CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200032, People's Republic of China
| | - Ya-Ni He
- National Key Laboratory of Plant Molecular Genetics, National Center for Plant Gene Research (Shanghai), CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200032, People's Republic of China
| | - Guo-Bin Zhang
- National Key Laboratory of Plant Molecular Genetics, National Center for Plant Gene Research (Shanghai), CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200032, People's Republic of China
| | - Hong-Ying Yi
- National Key Laboratory of Plant Molecular Genetics, National Center for Plant Gene Research (Shanghai), CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200032, People's Republic of China
| | - Yan-Lei Fu
- National Key Laboratory of Plant Molecular Genetics, National Center for Plant Gene Research (Shanghai), CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200032, People's Republic of China
| | - Ji-Ming Gong
- National Key Laboratory of Plant Molecular Genetics, National Center for Plant Gene Research (Shanghai), CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200032, People's Republic of China.
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