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Gao SH, Wang GZ, Wang LP, Feng L, Zhou YC, Yu XJ, Liang F, Yang FY, Wang Z, Sun BB, Wang D, Liang LJ, Xie DW, Zhao S, Feng HP, Li X, Li KK, Tang TS, Huang YC, Wang SQ, Zhou GB. Corrigendum to "Mutations and clinical significance of calcium voltage-gated channel subunit alpha 1E (CACNA1E) in non-small cell lung cancer" [Cell Calcium 102 (2022) 102527]. Cell Calcium 2024; 119:102866. [PMID: 38428281 DOI: 10.1016/j.ceca.2024.102866] [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: 03/03/2024]
Affiliation(s)
- S H Gao
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences & University of Chinese Academy of Sciences, Beijing, 100101, China; State Key Laboratory of Molecular Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China
| | - G Z Wang
- State Key Laboratory of Molecular Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China.
| | - L P Wang
- State Key Laboratory of Membrane Biology, College of Life Sciences, Peking University, Beijing, 100091, China
| | - L Feng
- Department of Pathology, Chinese PLA General Hospital, Beijing, 100853, China
| | - Y C Zhou
- Department of Thoracic Surgery, the Third Affiliated Hospital of Kunming Medical University (Yunnan Tumor Hospital), Kunming, 650106, China
| | - X J Yu
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences & University of Chinese Academy of Sciences, Beijing, 100101, China
| | - F Liang
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences & University of Chinese Academy of Sciences, Beijing, 100101, China; State Key Laboratory of Molecular Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China
| | - F Y Yang
- State Key Laboratory of Molecular Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China
| | - Z Wang
- State Key Laboratory of Molecular Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China
| | - B B Sun
- State Key Laboratory of Molecular Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China
| | - D Wang
- State Key Laboratory of Molecular Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China
| | - L J Liang
- State Key Laboratory of Molecular Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China
| | - D W Xie
- State Key Laboratory of Molecular Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China
| | - S Zhao
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences & University of Chinese Academy of Sciences, Beijing, 100101, China
| | - H P Feng
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences & University of Chinese Academy of Sciences, Beijing, 100101, China
| | - X Li
- Computer Science Department, University of North Georgia, Dahlonega, GA, 30597, United States
| | - K K Li
- Computer Science Department, University of North Georgia, Dahlonega, GA, 30597, United States
| | - T S Tang
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences & University of Chinese Academy of Sciences, Beijing, 100101, China
| | - Y C Huang
- Department of Thoracic Surgery, the Third Affiliated Hospital of Kunming Medical University (Yunnan Tumor Hospital), Kunming, 650106, China
| | - S Q Wang
- State Key Laboratory of Membrane Biology, College of Life Sciences, Peking University, Beijing, 100091, China
| | - G B Zhou
- State Key Laboratory of Molecular Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China.
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Zeng W, Zhang Y, Tian X, Li W, Meng H, Zhou Y, Wang Z, Chen Z, Zhang K, Wang M. Increased cytoplasmic Mg2+ level contributes to rice salicylic acid accumulation and broad-spectrum resistance. Plant Physiol 2024:kiae220. [PMID: 38635966 DOI: 10.1093/plphys/kiae220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 03/05/2024] [Accepted: 03/05/2024] [Indexed: 04/20/2024]
Abstract
Elevating Mg2+ levels in rice cytoplasm by genetic modification or exogenous supply increases salicylic acid accumulation and enhances broad-spectrum resistance to pathogens.
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Affiliation(s)
- Wenzhi Zeng
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, Fujian University Key Laboratory for Plant-Microbe Interaction, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Yanjun Zhang
- Zhejiang Provincial Key Laboratory of Biotechnology on Specialty Economic Plants, Zhejiang Normal University, Jinhua 321004, China
| | - Xinyue Tian
- Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Wenyan Li
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, Fujian University Key Laboratory for Plant-Microbe Interaction, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Han Meng
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Yunnan Agricultural University, Kunming 650201, China
| | - Yuanchang Zhou
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, Fujian University Key Laboratory for Plant-Microbe Interaction, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Zonghua Wang
- Fuzhou Institute of Oceanography, Minjiang University, Fuzhou 350108, Fujian, China
| | - Zhichang Chen
- Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Kewei Zhang
- Zhejiang Provincial Key Laboratory of Biotechnology on Specialty Economic Plants, Zhejiang Normal University, Jinhua 321004, China
| | - Mo Wang
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Yunnan Agricultural University, Kunming 650201, China
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3
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Zhou YC, Duan SJ, Tian QL, Zhou XD, Zheng LW. [A case report of tooth agenesis, multiple dens invaginatus and taurodontism]. Zhonghua Kou Qiang Yi Xue Za Zhi 2023; 58:834-839. [PMID: 37550045 DOI: 10.3760/cma.j.cn112144-20230423-00170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 08/09/2023]
Affiliation(s)
- Y C Zhou
- Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University & State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, Chengdu 610041, China
| | - S J Duan
- West China Hospital of Stomatology, Sichuan University & State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, Chengdu 610041, China
| | - Q L Tian
- Department of Pediatric Dentistry, West China Hospital of Stomatology, Sichuan University & State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, Chengdu 610041, China
| | - X D Zhou
- Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University & State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, Chengdu 610041, China
| | - L W Zheng
- Department of Pediatric Dentistry, West China Hospital of Stomatology, Sichuan University & State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, Chengdu 610041, China
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Yang PY, Jin M, Zhou YC, Duan C, Mao HW, Zhang R, Wang HM, Su Y. [Activated PI3Kδ syndrome caused by PIK3CD gene mutation complicated with germ cell tumor in a child]. Zhonghua Er Ke Za Zhi 2023; 61:562-564. [PMID: 37312472 DOI: 10.3760/cma.j.cn112140-20221012-00864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Affiliation(s)
- P Y Yang
- Medical Oncology Department, Pediatric Oncology Center, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing Key Laboratory of Pediatric Hematology Oncology, Key Laboratory of Major Diseases in Children, Ministry of Education, Beijing 100045, China
| | - M Jin
- Medical Oncology Department, Pediatric Oncology Center, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing Key Laboratory of Pediatric Hematology Oncology, Key Laboratory of Major Diseases in Children, Ministry of Education, Beijing 100045, China
| | - Y C Zhou
- Medical Oncology Department, Pediatric Oncology Center, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing Key Laboratory of Pediatric Hematology Oncology, Key Laboratory of Major Diseases in Children, Ministry of Education, Beijing 100045, China
| | - C Duan
- Medical Oncology Department, Pediatric Oncology Center, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing Key Laboratory of Pediatric Hematology Oncology, Key Laboratory of Major Diseases in Children, Ministry of Education, Beijing 100045, China
| | - H W Mao
- Department of Immunology, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
| | - R Zhang
- Hematology Center, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
| | - H M Wang
- Department of Surgical Oncology, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
| | - Y Su
- Medical Oncology Department, Pediatric Oncology Center, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing Key Laboratory of Pediatric Hematology Oncology, Key Laboratory of Major Diseases in Children, Ministry of Education, Beijing 100045, China
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Niu Y, Huang X, He Z, Zhang Q, Meng H, Shi H, Feng B, Zhou Y, Zhang J, Lu G, Wang Z, Zhang W, Tang D, Wang M. Phosphorylation of OsTGA5 by casein kinase II compromises its suppression of defense-related gene transcription in rice. Plant Cell 2022; 34:3425-3442. [PMID: 35642941 PMCID: PMC9421590 DOI: 10.1093/plcell/koac164] [Citation(s) in RCA: 2] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Accepted: 04/25/2022] [Indexed: 06/15/2023]
Abstract
Plants manage the high cost of immunity activation by suppressing the expression of defense genes during normal growth and rapidly switching them on upon pathogen invasion. TGAs are key transcription factors controlling the expression of defense genes. However, how TGAs function, especially in monocot plants like rice with continuously high levels of endogenous salicylic acid (SA) remains elusive. In this study, we characterized the role of OsTGA5 as a negative regulator of rice resistance against blast fungus by transcriptionally repressing the expression of various defense-related genes. Moreover, OsTGA5 repressed PTI responses and the accumulation of endogenous SA. Importantly, we showed that the nucleus-localized casein kinase II (CK2) complex interacts with and phosphorylates OsTGA5 on Ser-32, which reduces the affinity of OsTGA5 for the JIOsPR10 promoter, thereby alleviating the repression of JIOsPR10 transcription and increasing rice resistance. Furthermore, the in vivo phosphorylation of OsTGA5 Ser-32 was enhanced by blast fungus infection. The CK2 α subunit, depending on its kinase activity, positively regulated rice defense against blast fungus. Taken together, our results provide a mechanism for the role of OsTGA5 in negatively regulating the transcription of defense-related genes in rice and the repressive switch imposed by nuclear CK2-mediated phosphorylation during blast fungus invasion.
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Affiliation(s)
- Yuqing Niu
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, Fujian University Key Laboratory for Plant–Microbe Interaction, Ministerial and Provincial Joint Innovation Centre for Safety Production of Cross-Strait Crops, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Xiaoguang Huang
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, Fujian University Key Laboratory for Plant–Microbe Interaction, Ministerial and Provincial Joint Innovation Centre for Safety Production of Cross-Strait Crops, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Zexue He
- State Key Laboratory for Crop Genetics and Germplasm Enhancement, JiangSu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, Nanjing 210095, China
| | - Qingqing Zhang
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, Fujian University Key Laboratory for Plant–Microbe Interaction, Ministerial and Provincial Joint Innovation Centre for Safety Production of Cross-Strait Crops, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Han Meng
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, Fujian University Key Laboratory for Plant–Microbe Interaction, Ministerial and Provincial Joint Innovation Centre for Safety Production of Cross-Strait Crops, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Hua Shi
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, Fujian University Key Laboratory for Plant–Microbe Interaction, Ministerial and Provincial Joint Innovation Centre for Safety Production of Cross-Strait Crops, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Baomin Feng
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, Fujian University Key Laboratory for Plant–Microbe Interaction, Ministerial and Provincial Joint Innovation Centre for Safety Production of Cross-Strait Crops, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | | | - Jianfu Zhang
- Rice Research Institute, Fujian Academy of Agricultural Sciences, Fuzhou 350019, China
| | - Guodong Lu
- Key Laboratory of Biopesticides and Chemical Biology, Ministry of Education, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Zonghua Wang
- Institute of Oceanography, Minjiang University, Fuzhou 350108, China
| | - Wenli Zhang
- State Key Laboratory for Crop Genetics and Germplasm Enhancement, JiangSu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, Nanjing 210095, China
| | - Dingzhong Tang
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, Fujian University Key Laboratory for Plant–Microbe Interaction, Ministerial and Provincial Joint Innovation Centre for Safety Production of Cross-Strait Crops, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Mo Wang
- Author for correspondence: (Y.Z.), (M.W.)
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Wang YY, Meng SJ, Jin WW, Lu C, Zhu QC, Zhou YC, Mou YP. [Clinical application of complete laparoscopic gastrectomy with function preservation of cardia in gastric carcinoma]. Zhonghua Yi Xue Za Zhi 2022; 102:2033-2036. [PMID: 35817730 DOI: 10.3760/cma.j.cn112137-20220313-00515] [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] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
To investigate the feasibility and safety of total laparoscopic cardia function preserving gastrectomy for gastric carcinoma. Clinical data of 10 patients undergoing total laparoscopic cardia function preserving gastrectomy for gastric carcinoma from November 2020 to December 2021 were retrospectively collected. There were 7 males and 3 females. The mean age was (66.1±12.9) years (ranged from 38 to 86 years). All of the 10 patients were successfully performed total laparoscopic cardia function preserving gastrectomy without conversion to laparotomy. The time of digestive tract reconstruction was (24.8±3.3) min (20-30 min), and the intraoperative blood loss was (35±24) ml(20-100 ml). The time of postoperative exhaust was (2.5±0.9) days(2-3 d), the time of postoperative liquid diet was (2.25±0.87) days(2-3 d), postoperative hospital stay was (9.5±2.1) days(6-13 d). No surgical complications such as bleeding, anastomotic fistula or anastomotic stenosis occurred. Postoperative pathology showed that the proximal and distal margins of resected specimens were negative. Patients were followed up for 2 to 15 months, respectively. No death or tumor recurrence and metastasis occurred during the follow-up period. There were no symptoms of reflux after operation. Compared with total gastrectomy and proximal gastrectomy, total laparoscopic cardia function preserving gastrectomy can theoretically reduce the incidence of reflux esophagitis. We used manual suture method for digestive tract reconstruction, which can reduce the application of 2-3 stapling studs and reduce the cost of surgical materials. Compared with subtotal gastrectomy, total laparoscopic cardia function preserving gastrectomy has the advantages of more thorough lymph node dissection, with little residual gastric tissue; therefore, the blood supply is relatively better. The incidence of reflux esophagitis of total laparoscopic cardia function preserving gastrectomy for gastric cancer may was lower than total gastrectomy.
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Affiliation(s)
- Y Y Wang
- Department of General Surgery, Cancer Center, Division of Gastrointestinal and Pancreatic Surgery, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, China and Key Laboratory of Gastroenterology of Zhejiang Province, Hangzhou 310014, China
| | - S J Meng
- Department of General Surgery, Cancer Center, Division of Gastrointestinal and Pancreatic Surgery, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, China and Key Laboratory of Gastroenterology of Zhejiang Province, Hangzhou 310014, China
| | - W W Jin
- Department of General Surgery, Cancer Center, Division of Gastrointestinal and Pancreatic Surgery, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, China and Key Laboratory of Gastroenterology of Zhejiang Province, Hangzhou 310014, China
| | - C Lu
- Department of General Surgery, Cancer Center, Division of Gastrointestinal and Pancreatic Surgery, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, China and Key Laboratory of Gastroenterology of Zhejiang Province, Hangzhou 310014, China
| | - Q C Zhu
- Department of General Surgery, Cancer Center, Division of Gastrointestinal and Pancreatic Surgery, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, China and Key Laboratory of Gastroenterology of Zhejiang Province, Hangzhou 310014, China
| | - Y C Zhou
- Department of General Surgery, Cancer Center, Division of Gastrointestinal and Pancreatic Surgery, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, China and Key Laboratory of Gastroenterology of Zhejiang Province, Hangzhou 310014, China
| | - Y P Mou
- Department of General Surgery, Cancer Center, Division of Gastrointestinal and Pancreatic Surgery, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, China and Key Laboratory of Gastroenterology of Zhejiang Province, Hangzhou 310014, China
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Lin YX, Xu HJ, Yin GK, Zhou YC, Lu XX, Xin X. Dynamic Changes in Membrane Lipid Metabolism and Antioxidant Defense During Soybean ( Glycine max L. Merr.) Seed Aging. Front Plant Sci 2022; 13:908949. [PMID: 35812982 PMCID: PMC9263854 DOI: 10.3389/fpls.2022.908949] [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] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Accepted: 06/07/2022] [Indexed: 06/15/2023]
Abstract
Seed viability depends upon the maintenance of functional lipids; however, how membrane lipid components dynamically change during the seed aging process remains obscure. Seed storage is accompanied by the oxidation of membrane lipids and loss of seed viability. Understanding membrane lipid changes and their effect on the cell membrane during seed aging can contribute to revealing the mechanism of seed longevity. In this study, the potential relationship between oxidative stress and membrane lipid metabolism was evaluated by using a non-targeted lipidomics approach during artificial aging of Glycine max L. Merr. Zhongdou No. 27 seeds. We determined changes in reactive oxygen species, malondialdehyde content, and membrane permeability and assessed antioxidant system activity. We found that decreased non-enzymatic antioxidant contents and catalase activity might lead to reactive oxygen species accumulation, resulting in higher electrolyte leakage and lipid peroxidation. The significantly decreased phospholipids and increased glycerolipids and lysophospholipids suggested that hydrolysis of phospholipids to form glycerolipids and lysophospholipids could be the primary pathway of membrane metabolism during seed aging. Moreover, the ratio of phosphatidylcholine to phosphatidylethanolamine, double bond index, and acyl chain length of phospholipids were found to jointly regulate membrane function. In addition, the observed changes in lipid metabolism suggest novel potential hallmarks of soybean seed aging, such as diacylglycerol 36:4; phosphatidylcholine 34:2, 36:2, and 36:4; and phosphatidylethanolamine 34:2. This knowledge can be of great significance for elucidating the molecular mechanism underlying seed aging and germplasm conservation.
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Affiliation(s)
- Yi-xin Lin
- National Crop Genebank, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
- College of Agriculture, Fujian Agricultural and Forestry University, Fuzhou, China
| | - Hai-jin Xu
- National Crop Genebank, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
- College of Agriculture, Fujian Agricultural and Forestry University, Fuzhou, China
| | - Guang-kun Yin
- National Crop Genebank, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Yuan-chang Zhou
- College of Agriculture, Fujian Agricultural and Forestry University, Fuzhou, China
| | - Xin-xiong Lu
- National Crop Genebank, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Xia Xin
- National Crop Genebank, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
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Lin YP, Zhou YC, Zhang Q, Lu YN, Mei ZC, Cen YC, Zhou H, Yuan ZQ, Xie L. [Clinical epidemiological survey of primary liver cancer in Yunnan province from 2005 to 2014]. Zhonghua Gan Zang Bing Za Zhi 2022; 30:606-611. [PMID: 36038321 DOI: 10.3760/cma.j.cn501113-20190814-00303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Objective: To investigate the clinical characteristics and changing trends of primary liver cancer in Yunnan province from 2005 to 2014, in order to provide theoretical basis for the prevention and treatment of liver cancer in this region. Methods: A retrospective survey was used to select inpatient cases of liver cancer who were initially diagnosed and treated in our hospital from 2005 to 2014 with simple random sampling. Patients socio-demographic and clinicopathological characteristics were extracted by a unified and standardized questionnaire, and the data were statistically analyzed. Results: A total of 1000 cases with liver cancer were included, aged (53.2±11.2) years, with a male-to-female ratio of 5.99/1.00. There was no significant change in the gender and age composition ratio of patients in the past 10 years. The proportion of patients with lower education level (primary or junior high school) were increased from 21.8% to 23.4%, and the proportion of patients with relatively higher education level were decreased from 58% to 38.2% (P<0.001). Smokers and non-smokers patients were decreased and increased from 58.8% to 44.4%, and 41.2% to 55.6% (P<0.001). The proportion of drinker patients were decreased from 46.4% to 35.2%. The proportion of patients with advanced liver cancer (stage C and D) were increased, while the proportion of patients with stage A and B showed a downward trend (P<0.001). The proportion of HBsAg-positive patients showed an upward trend, that is, rising from 69% in 2005 to 82% in 2014 (P=0.043). The proportion of HBeAg-positive patients showed a steady trend (P=0.008). The use rate of ultrasound examination in patients with liver cancer were decreased from 91.0% to 58.0% (P=0.001), while the use rate of computed tomography (CT), MRI, and PET/CT examinations were increased from 81.0% to 84.0% (P=0.05), 0 to 22% (P<0.001), and 0 to 3% (P=0.026) between 2005 to 2014. The proportion of surgical patients were increased (P=0.005), but the proportion of interventional patients did not change significantly (P=0.590). Surgery and interventional therapy were the most common treatment methods, and the proportion of patients treated with surgery over the past 10 years showed an upward trend (P=0.005), while the proportion of interventional therapy remained at a high level with no significant change (P=0.590). Conclusion: In Yunnan province, the incidence of liver cancer increases with age, and the proportion of male with liver cancer is almost six times that of women. Moreover, the low positive rate of alpha-fetoprotein levels and advanced clinical stage in this region are presently the main challenges against the liver cancer prevention and treatment. The application scope of CT, magnetic resonance imaging, PET-CT and other examination methods has gradually expanded, but the treatment methods are still mainly surgery and interventional therapy.
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Affiliation(s)
- Y P Lin
- Cancer Center Office, Third Affiliated Hospital of Kunming Medical University/Yunnan Cancer Hospital, Kunming 650118, China
| | - Y C Zhou
- Cancer Center Office, Third Affiliated Hospital of Kunming Medical University/Yunnan Cancer Hospital, Kunming 650118, China
| | - Q Zhang
- Medical center, Third Affiliated Hospital of Kunming Medical University/Yunnan Cancer Hospital, Kunming 650118, China
| | - Y N Lu
- Cancer Center Office, Third Affiliated Hospital of Kunming Medical University/Yunnan Cancer Hospital, Kunming 650118, China
| | - Z C Mei
- Cancer Center Office, Third Affiliated Hospital of Kunming Medical University/Yunnan Cancer Hospital, Kunming 650118, China
| | - Y C Cen
- Cancer Center Office, Third Affiliated Hospital of Kunming Medical University/Yunnan Cancer Hospital, Kunming 650118, China
| | - H Zhou
- Cancer Center Office, Third Affiliated Hospital of Kunming Medical University/Yunnan Cancer Hospital, Kunming 650118, China
| | - Z Q Yuan
- Cancer Center Office, Third Affiliated Hospital of Kunming Medical University/Yunnan Cancer Hospital, Kunming 650118, China
| | - L Xie
- Gastrointestinal Oncology, Third Affiliated Hospital of Kunming Medical University/Yunnan Cancer Hospital, Kunming 650118, China
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Zhou YC, Pang XZ, Zhu HL, He Y, Shen Y, Ma DY. [The IL-6/STAT3 signaling pathway mediated by radiotherapy regulates the expression of PD-L1 in esophageal cancer cells]. Zhonghua Zhong Liu Za Zhi 2022; 44:389-394. [PMID: 35615794 DOI: 10.3760/cma.j.cn112152-20200320-00236] [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] [Subscribe] [Scholar Register] [Indexed: 04/16/2023]
Abstract
Objective: To explore the possible mechanism of radiotherapy regulating the expression of PD-L1 in esophageal carcinoma. Methods: Three esophageal cancer cell lines (Eca109, Kyse150, TE1) were irradiated with different doses of X-rays, and 6 Gy+ AG490 group was set. The mRNA expression of PD-L1 was detected by real-time quantitative polymerase chain reaction (RT-qPCR). The protein expressions of PD-L1, STAT3, p-STAT3 were detected by western blotting and the protein level of IL-6 was detected by ELISA. Results: The mRNA expressions of PD-L1 in Eca109, Kyse150 and TE1 were 2.86±0.30, 960.01±21.27 and 106.78±6.67, higher than 1.07±0.15 in normal esophageal cell line HET-1A (P<0.01). The protein expressions of PD-L1 in Eca109, Kyse150 and TE1 were 0.091±0.036, 1.533±0.079 and 0.914±0.035, higher than 0.063±0.01 in normal esophageal cell line HET-1A (P<0.01). After 48 hours of 6 Gy irradiation, the protein expression levels of PD-L1 in Eca109, Kyse150 and TE1 were 0.135±0.007, 1.66±0.06 and 1.32±0.06, higher than 0.09±0.01, 1.21±0.05 and 0.93±0.03 of the 0 Gy group (P<0.01), while the protein expression levels of p-STAT3 in Eca109, Kyse150 and TE1 were 1.44±0.26, 0.75±0.04 and 1.92±0.17, higher than 0.18±0.05, 0.48±0.02 and 0.36±0.06 of the 0 Gy group (P<0.01). IL-6 protein expression increased significantly after different doses of irradiation (P<0.01). After the IL-6/STAT3 signaling pathway was blocked by the specific inhibitor AG490, the expressions of PD-L1 of Eca109, Kyse150 and TE1 in the 6 Gy+ AG490 groups were 0.11±0.03, 1.07±0.08 and 0.96±0.11, without significant differences of 0.09±0.01, 0.96±0.05 and 0.85±0.09 of the 0 Gy group (P>0.05), while the protein expressions of p-STAT3 were 0.76±0.11, 0.59±0.06 and 0.96±0.12, without significant differences of 0.67±0.08, 0.54±0.06 and 0.84±0.11 of the 0 Gy group (P>0.05). Conclusion: Radiotherapy may regulate the expression of PD-L1 in esophageal cancer cells through IL-6 / STAT3 signaling pathway.
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Affiliation(s)
- Y C Zhou
- Department of Oncology, Affiliated Hospital of North Sichuan Medical College, Nanchong 637000, China
| | - X Z Pang
- Department of Oncology, Affiliated Hospital of North Sichuan Medical College, Nanchong 637000, China
| | - H L Zhu
- Department of Oncology, Affiliated Hospital of North Sichuan Medical College, Nanchong 637000, China
| | - Y He
- Department of Oncology, Affiliated Hospital of North Sichuan Medical College, Nanchong 637000, China
| | - Y Shen
- Department of Oncology, Affiliated Hospital of North Sichuan Medical College, Nanchong 637000, China
| | - D Y Ma
- Department of Oncology, Affiliated Hospital of North Sichuan Medical College, Nanchong 637000, China
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Chen Z, Wang Y, Huang R, Zhang Z, Huang J, Yu F, Lin Y, Guo Y, Liang K, Zhou Y, Chen F. Integration of transcriptomic and proteomic analyses reveals several levels of metabolic regulation in the excess starch and early senescent leaf mutant lses1 in rice. BMC Plant Biol 2022; 22:137. [PMID: 35321646 PMCID: PMC8941791 DOI: 10.1186/s12870-022-03510-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Accepted: 03/04/2022] [Indexed: 06/14/2023]
Abstract
BACKGROUND The normal metabolism of transitory starch in leaves plays an important role in ensuring photosynthesis, delaying senescence and maintaining high yield in crops. OsCKI1 (casein kinase I1) plays crucial regulatory roles in multiple important physiological processes, including root development, hormonal signaling and low temperature-treatment adaptive growth in rice; however, its potential role in regulating temporary starch metabolism or premature leaf senescence remains unclear. To reveal the molecular regulatory mechanism of OsCKI1 in rice leaves, physiological, transcriptomic and proteomic analyses of leaves of osckI1 allele mutant lses1 (leaf starch excess and senescence 1) and its wild-type varieties (WT) were performed. RESULTS Phenotypic identification and physiological measurements showed that the lses1 mutant exhibited starch excess in the leaves and an obvious leaf tip withering phenotype as well as high ROS and MDA contents, low chlorophyll content and protective enzyme activities compared to WT. The correlation analyses between protein and mRNA abundance are weak or limited. However, the changes of several important genes related to carbohydrate metabolism and apoptosis at the mRNA and protein levels were consistent. The protein-protein interaction (PPI) network might play accessory roles in promoting premature senescence of lses1 leaves. Comprehensive transcriptomic and proteomic analysis indicated that multiple key genes/proteins related to starch and sugar metabolism, apoptosis and ABA signaling exhibited significant differential expression. Abnormal increase in temporary starch was highly correlated with the expression of starch biosynthesis-related genes, which might be the main factor that causes premature leaf senescence and changes in multiple metabolic levels in leaves of lses1. In addition, four proteins associated with ABA accumulation and signaling, and three CKI potential target proteins related to starch biosynthesis were up-regulated in the lses1 mutant, suggesting that LSES1 may affect temporary starch accumulation and premature leaf senescence through phosphorylation crosstalk ABA signaling and starch anabolic pathways. CONCLUSION The current study established the high correlation between the changes in physiological characteristics and mRNA and protein expression profiles in lses1 leaves, and emphasized the positive effect of excessive starch on accelerating premature leaf senescence. The expression patterns of genes/proteins related to starch biosynthesis and ABA signaling were analyzed via transcriptomes and proteomes, which provided a novel direction and research basis for the subsequent exploration of the regulation mechanism of temporary starch and apoptosis via LSES1/OsCKI1 in rice.
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Affiliation(s)
- Zhiming Chen
- Key Laboratory of Ministry of Education for Genetic Improvement and Comprehensive Utilization of Crops, Fujian Provincial Key Laboratory of Crop Breeding by Design, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China
| | - Yongsheng Wang
- Postdoctoral Station of Biology, School of Life Sciences, Hebei University, Baoding, 071000, Hebei, China
| | - Rongyu Huang
- School of Life Sciences, Xiamen University, Xiamen, 361005, Fujian, China
| | - Zesen Zhang
- School of Life Sciences, Xiamen University, Xiamen, 361005, Fujian, China
| | - Jinpeng Huang
- School of Life Sciences, Xiamen University, Xiamen, 361005, Fujian, China
| | - Feng Yu
- Key Laboratory of Ministry of Education for Genetic Improvement and Comprehensive Utilization of Crops, Fujian Provincial Key Laboratory of Crop Breeding by Design, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China
| | - Yaohai Lin
- College of Computer and Information Science, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China
| | - Yuchun Guo
- Key Laboratory of Ministry of Education for Genetic Improvement and Comprehensive Utilization of Crops, Fujian Provincial Key Laboratory of Crop Breeding by Design, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China
| | - Kangjing Liang
- Key Laboratory of Ministry of Education for Genetic Improvement and Comprehensive Utilization of Crops, Fujian Provincial Key Laboratory of Crop Breeding by Design, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China
| | - Yuanchang Zhou
- Key Laboratory of Ministry of Education for Genetic Improvement and Comprehensive Utilization of Crops, Fujian Provincial Key Laboratory of Crop Breeding by Design, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China.
| | - Fangyu Chen
- Key Laboratory of Ministry of Education for Genetic Improvement and Comprehensive Utilization of Crops, Fujian Provincial Key Laboratory of Crop Breeding by Design, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China.
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Zheng WH, Li C, Zhou YC, Cai T, Li J, Jiang RH, Sun CY, Shui X, Wang TQ, He YD, Ning G, Qin G. [Virtual reality-assisted management of communicated solitary fibrous tumor in skull base: a case report]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2022; 57:65-68. [PMID: 35090215 DOI: 10.3760/cma.j.cn115330-20210630-00405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Affiliation(s)
- W H Zheng
- Department of Head and Neck Surgery, Sichuan Cancer Hospital, Sichuan Cancer Research Institute, Sichuan Cancer Prevention and Cure Center, Cancer Hospital Affiliate to School of Medicine, Electronic Science and Technology, Chengdu 610041, China Department of Otorhinolaryngology Head and Neck Surgery, Affiliated Hospital of Southwest Medical University, Luzhou 646200, Sichuan Province, China
| | - C Li
- Department of Head and Neck Surgery, Sichuan Cancer Hospital, Sichuan Cancer Research Institute, Sichuan Cancer Prevention and Cure Center, Cancer Hospital Affiliate to School of Medicine, Electronic Science and Technology, Chengdu 610041, China
| | - Y C Zhou
- Department of Head and Neck Surgery, Sichuan Cancer Hospital, Sichuan Cancer Research Institute, Sichuan Cancer Prevention and Cure Center, Cancer Hospital Affiliate to School of Medicine, Electronic Science and Technology, Chengdu 610041, China
| | - T Cai
- Department of Head and Neck Surgery, Sichuan Cancer Hospital, Sichuan Cancer Research Institute, Sichuan Cancer Prevention and Cure Center, Cancer Hospital Affiliate to School of Medicine, Electronic Science and Technology, Chengdu 610041, China
| | - J Li
- Department of Head and Neck Surgery, Sichuan Cancer Hospital, Sichuan Cancer Research Institute, Sichuan Cancer Prevention and Cure Center, Cancer Hospital Affiliate to School of Medicine, Electronic Science and Technology, Chengdu 610041, China
| | - R H Jiang
- Department of Head and Neck Surgery, Sichuan Cancer Hospital, Sichuan Cancer Research Institute, Sichuan Cancer Prevention and Cure Center, Cancer Hospital Affiliate to School of Medicine, Electronic Science and Technology, Chengdu 610041, China
| | - C Y Sun
- Department of Head and Neck Surgery, Sichuan Cancer Hospital, Sichuan Cancer Research Institute, Sichuan Cancer Prevention and Cure Center, Cancer Hospital Affiliate to School of Medicine, Electronic Science and Technology, Chengdu 610041, China
| | - X Shui
- Department of Head and Neck Surgery, Sichuan Cancer Hospital, Sichuan Cancer Research Institute, Sichuan Cancer Prevention and Cure Center, Cancer Hospital Affiliate to School of Medicine, Electronic Science and Technology, Chengdu 610041, China
| | - T Q Wang
- Department of Head and Neck Surgery, Sichuan Cancer Hospital, Sichuan Cancer Research Institute, Sichuan Cancer Prevention and Cure Center, Cancer Hospital Affiliate to School of Medicine, Electronic Science and Technology, Chengdu 610041, China Department of Clinical Medicine, Chengdu Medical College, Chengdu 610041, China
| | - Y D He
- Department of Head and Neck Surgery, Sichuan Cancer Hospital, Sichuan Cancer Research Institute, Sichuan Cancer Prevention and Cure Center, Cancer Hospital Affiliate to School of Medicine, Electronic Science and Technology, Chengdu 610041, China Department of Clinical Medicine, Chengdu Medical College, Chengdu 610041, China
| | - G Ning
- Department of Head and Neck Surgery, Sichuan Cancer Hospital, Sichuan Cancer Research Institute, Sichuan Cancer Prevention and Cure Center, Cancer Hospital Affiliate to School of Medicine, Electronic Science and Technology, Chengdu 610041, China
| | - Gang Qin
- Department of Otorhinolaryngology Head and Neck Surgery, Affiliated Hospital of Southwest Medical University, Luzhou 646200, Sichuan Province, China
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Lu C, Jin WW, Mou YP, Zhou YC, Wang YY, Xia T, Zhu QC, Xu BW, Ren YF, Meng SJ, He YH, Jiang QT. [Clinical effect of minimally invasive duodenum preserving pancreatic head resection for benign and pre-malignant lesions of pancreatic head]. Zhonghua Wai Ke Za Zhi 2022; 60:39-45. [PMID: 34954945 DOI: 10.3760/cma.j.cn112139-20211104-00516] [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 examine the clinical effect of minimally invasive duodenum preserving pancreatic head resection(DPPHR) for benign and pre-malignant lesions of pancreatic head. Methods: The clinical data of patients with diagnosis of benign or pre-malignant pancreatic head tumor were retrospectively collected and analyzed,all of them underwent laparoscopic or robotic DPPHR between October 2015 and September 2021 at Division of Gastrointestinal and Pancreatic surgery,Zhejiang Provincial People's Hospital. Thirty-three patients were enrolled with 10 males and 23 females. The age(M(IQR)) was 54(32) years old(range: 11 to 77 years old) with body mass index of 21.9(2.9)kg/m2(range: 18.1 to 30.1 kg/m2). The presenting symptoms included abdominal pain(n=12), Whipple triad(n=2), and asymptomatic(n=19), among them there were 7 patients with hypertension and 1 patient with diabetes mellitus. There were 19 patients diagnosed as American Society of Anesthesiologists class Ⅰ and 14 patient as class Ⅱ. The student t test,U test, χ2 test or Fisher exact test was used to compare continuous data or categorized data,respectively. All the perioperative data and metabolic morbidity were analyzed and experiences on minimally invasive DPPHR was concluded. Results: Fourteen patients underwent laparoscopic DPPHR,while the rest of 19 patients received robotic DPPHR. Indocyanine green fluorescence imaging was used in 19 patients to guide operation. Five patients were performed pancreatico-gastrostomy and the rest 28 patients underwent pancreaticojejunostomy. Pathological outcomes confirmed 9 solid pseudo-papillary neoplasms, 9 intraductal papillary mucinous neoplasms, 7 serous cystic neoplasms, 6 pancreatic neuroendocrine tumors, 1 mucous cystic neoplasm, 1 chronic pancreatitis. The operative time was (309.4±50.3) minutes(range:180 to 420 minutes),and the blood loss was (97.9±48.3)ml(range:20 to 200 ml). Eighteen patients suffered from postoperative complications,including 3 patients experienced severe complications(Clavien-Dindo Grade ≥Ⅲ). Pancreatic fistula occurred in 16 patients,including 8 patients with biochemical leak,7 patients with grade B pancreatic fistula and 1 patient with grade C pancreatic fistula. No one suffered from the duodenal necrosis and none perioperative death was occurred. The length of hospital stay was 14(7) days (range:6 to 87 days). The follow-up was 22.6(24.5)months(range:2 to 74 months). None suffered from recurrence or metastasis. During the follow-up,all the patients were free of refractory cholangitis. Moreover,in the term of endocrine dysfunction,no postoperative new onset of diabetes mellitus were observed in the long-term follow-up. However,in the view of exocrine insufficiency,pancreatic exocrine insufficiency and non-alcoholic fatty liver disease (NAFLD) was complicated in 2 and 1 patient,respectively,with the supplement of pancreatic enzyme,steatorrhea and weight loss relieved,but NAFLD was awaited to be seen. Conclusions: Minimally invasive DPPHR is feasible and safe for benign or pre-malignant lesions of pancreatic head. Moreover,it is oncological equivalent to pancreaticoduodenectomy with preservation of metabolic function without refractory cholangitis.
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Affiliation(s)
- C Lu
- Department of General Surgery,Division of Gastrointestinal and Pancreatic Surgery,Zhejiang Provincial People's Hospital(People's Hospital of Hangzhou Medical College),Key Laboratory of Gastroenterology of Zhejiang Province,Hangzhou 310014,China
| | - W W Jin
- Department of General Surgery,Division of Gastrointestinal and Pancreatic Surgery,Zhejiang Provincial People's Hospital(People's Hospital of Hangzhou Medical College),Key Laboratory of Gastroenterology of Zhejiang Province,Hangzhou 310014,China
| | - Y P Mou
- Department of General Surgery,Division of Gastrointestinal and Pancreatic Surgery,Zhejiang Provincial People's Hospital(People's Hospital of Hangzhou Medical College),Key Laboratory of Gastroenterology of Zhejiang Province,Hangzhou 310014,China
| | - Y C Zhou
- Department of General Surgery,Division of Gastrointestinal and Pancreatic Surgery,Zhejiang Provincial People's Hospital(People's Hospital of Hangzhou Medical College),Key Laboratory of Gastroenterology of Zhejiang Province,Hangzhou 310014,China
| | - Y Y Wang
- Department of General Surgery,Division of Gastrointestinal and Pancreatic Surgery,Zhejiang Provincial People's Hospital(People's Hospital of Hangzhou Medical College),Key Laboratory of Gastroenterology of Zhejiang Province,Hangzhou 310014,China
| | - T Xia
- Department of General Surgery,Division of Gastrointestinal and Pancreatic Surgery,Zhejiang Provincial People's Hospital(People's Hospital of Hangzhou Medical College),Key Laboratory of Gastroenterology of Zhejiang Province,Hangzhou 310014,China
| | - Q C Zhu
- Department of General Surgery,Division of Gastrointestinal and Pancreatic Surgery,Zhejiang Provincial People's Hospital(People's Hospital of Hangzhou Medical College),Key Laboratory of Gastroenterology of Zhejiang Province,Hangzhou 310014,China
| | - B W Xu
- Bengbu Medical College,Bengbu 233030,China
| | - Y F Ren
- Zhejiang University of Traditional Chinese Medicine,Hangzhou 310053,China
| | - S J Meng
- Bengbu Medical College,Bengbu 233030,China
| | - Y H He
- Zhejiang University of Traditional Chinese Medicine,Hangzhou 310053,China
| | - Q T Jiang
- Bengbu Medical College,Bengbu 233030,China
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Zhou YC, Zhang L, Xu N, Jia CW, Huang XM, Zeng XJ. [Castleman disease presenting with polyserositis and renal impairment : a case report]. Zhonghua Nei Ke Za Zhi 2021; 60:915-917. [PMID: 34551483 DOI: 10.3760/cma.j.cn112138-20201130-00981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Y C Zhou
- Department of General Practice/General Internal Medicine, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - L Zhang
- Department of Hematology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - N Xu
- Department of General Practice/General Internal Medicine, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - C W Jia
- Department of Pathology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - X M Huang
- Department of General Practice/General Internal Medicine, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - X J Zeng
- Department of General Practice/General Internal Medicine, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
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Zhu QC, Jin WW, Mou YP, Zhou YC, Wang YY, Xia T, Lu C. [Clinical analysis of minimal invasive surgical treatment for pancreatic neuroendocrine tumors]. Zhonghua Yi Xue Za Zhi 2020; 100:2854-2857. [PMID: 32988146 DOI: 10.3760/cma.j.cn112137-20200217-00314] [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
Objective: To analyze the safety and effectiveness of minimal invasive surgery treating pancreatic neuroendocrine tumors (pNETs), and to summarize surgical characteristics and share experience. Methods: The clinical data of 80 pNETs treated by a single hospital from January 2015 to December 2019 were retrospectively analyzed. The patients were divided into laparoscopic group and robot group. And surgical procedures included pancreaticoduodenectomy (PD), distal pancreatectomy (DP), central pancreatectomy (CP), and tumor enucleation. Results: Of 80 patients, 76 cases (95%) underwent minimal invasive surgery and 4 cases (5%) changed to open surgery. There were 38 females, with median age of 54.4 (20-80) years and median BMI (17.0-38.0) kg/m(2). Among them, 24 patients (31.6%) underwent PD, 36 patients (47.4%) underwent DP, 8 patients (10.5%) underwent CP and 8 patients (10.5%) received tumor enucleation. The postoperative incidence of grade B/C pancreatic fistula was 35.5%, the incidence of abdominal infection was 10.5%, the postoperative bleeding was 7.9%, and the reoperation rate was 6.6%, without perioperative deaths. There was no significant difference in postoperative complications among different surgical methods, including postoperative pancreatic fistula (P=0.396), postoperative bleeding (P=0.297), postoperative abdominal infection (P=0.339) and reoperation (P=0.396). Conclusions: Surgical resection is an effective treatment for pNETs. pNETs are suitable for minimally invasive surgery with earlier stage and smaller tumor diameter. Minimally invasive surgery for pNETs is safe and feasible, and functional preserving surgery could take into consideration.
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Affiliation(s)
- Q C Zhu
- Department of Gastrointestinal and Pancreatic Surgery, Zhejiang Provincial People's Hospital Key Laboratory of Gastroenterology of Zhejiang Province People's Hospital of Hangzhou Medical College, Hangzhou 310014, China
| | - W W Jin
- Department of Gastrointestinal and Pancreatic Surgery, Zhejiang Provincial People's Hospital Key Laboratory of Gastroenterology of Zhejiang Province People's Hospital of Hangzhou Medical College, Hangzhou 310014, China
| | - Y P Mou
- Department of Gastrointestinal and Pancreatic Surgery, Zhejiang Provincial People's Hospital Key Laboratory of Gastroenterology of Zhejiang Province People's Hospital of Hangzhou Medical College, Hangzhou 310014, China
| | - Y C Zhou
- Department of Gastrointestinal and Pancreatic Surgery, Zhejiang Provincial People's Hospital Key Laboratory of Gastroenterology of Zhejiang Province People's Hospital of Hangzhou Medical College, Hangzhou 310014, China
| | - Y Y Wang
- Department of Gastrointestinal and Pancreatic Surgery, Zhejiang Provincial People's Hospital Key Laboratory of Gastroenterology of Zhejiang Province People's Hospital of Hangzhou Medical College, Hangzhou 310014, China
| | - T Xia
- Department of Gastrointestinal and Pancreatic Surgery, Zhejiang Provincial People's Hospital Key Laboratory of Gastroenterology of Zhejiang Province People's Hospital of Hangzhou Medical College, Hangzhou 310014, China
| | - C Lu
- Department of Gastrointestinal and Pancreatic Surgery, Zhejiang Provincial People's Hospital Key Laboratory of Gastroenterology of Zhejiang Province People's Hospital of Hangzhou Medical College, Hangzhou 310014, China
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Zhou YC, Lin YP, Li Q, Ma LY, Liu X, Wang XX, Li HS, Liu JX, Shen ZH, Guo YJ, Du YX, Yang RJ, Huang YC, Dai M, Zhang Q. [Analysis of EGFR mutation and clinical features of lung cancer in Yunnan]. Zhonghua Zhong Liu Za Zhi 2020; 42:729-734. [PMID: 32988154 DOI: 10.3760/cma.j.cn112152-20200313-00201] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To analyze the EGFR mutation profile of lung cancer patients in Yunnan, and to provide evidence for clinical personalized treatment. Methods: Demographic and clinical data of 2 967 lung cancer patients undergoing EGFR identification were collected and analyzed from January 2014 to August 2019 in Yunnan Cancer Hospital. Results: The proportion of EGFR mutation in 2 967 patients with lung cancer was 46.2%. Univariate analysis showed that the proportion of EGFR mutation in women was higher than that in men (P<0.001) and displayed a downward trend with age (P=0.03). The mutation rate of ethnic minorities was higher than Han (P=0.012). Mutation rate in patients without smoking history was higher than those with smoking history (P<0.001), and patients without drinking history was higher than patients with drinking history (P<0.001). Mutation rate in patients without family history of lung cancer was higher than those with family history (P=0.008). The mutation rate of adenocarcinoma was higher than other pathological types (P<0.001). The mutation rate was different among stages, and it was higher in early patients than that in advanced patients (P<0.001). The mutation rate of tissue specimens was higher than those of cytology and peripheral blood samples (P<0.001). The mutation rate of Xuanwei area was lower than that in non-Xuanwei area (P<0.001). Multivariate analysis showed that gender (P<0.001), age (P=0.036), smoking history (P<0.001), pathological type (P<0.001), specimen type (P<0.001), and whether or not Xuanwei area (P<0.001) were the independent factors of EGFR mutation.The EGFR mutation was more common in female, non-smokers, adenocarcinoma, non-Xuanwei area, tissue specimen and young lung cancer patients.The mutation types of EGFR in 1 370 cases mainly included 19-Del and L858R. The predominant mutation of EGFR in Xuanwei area was L858R, while in non-Xuanwei area was 19-Del.The mutation rates of G719X, G719X+ L861Q, G719X+ S768I, and S768I in Xuanwei were higher while the mutation rates of 19-Del, L858R, and 20-ins were lower than non-Xuanwei area (P<0.05). The 19-Del mutation rate of ethnic minorities is higher than that of Han (P<0.001). The combined mutation rate of G719X, L861Q in Han was higher than that of ethnic minorities (P=0.005). Conclusions: The EGFR mutation rate in lung cancer patients in Yunnan is similar to Asian and Chinese, and higher in female, non-smokers, adenocarcinomas, young and non-Xuanwei area patients. The most common types of EGFR mutation in Yunnan are 19-Del and L858R. The predominant mutation of EGFR in Xuanwei area is L858R, while in non-Xuanwei area is 19-Del. The mutation rates of G719X, G719X+ L861Q, G719X+ S768I and S768I are higher in Xuanwei patients than those in non-Xuanwei patients. The combined mutation rate of G719X and L861Q in Han nationality is higher than that of ethnic minorities.
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Affiliation(s)
- Y C Zhou
- Molecular Diagnostic Branch Center of Yunnan Cancer Center, Yunnan Cancer Hospital, Kunming 650118, China
| | - Y P Lin
- Office of Yunnan Cancer Center, Yunnan Cancer Hospital, Kunming 650118, China
| | - Q Li
- Molecular Diagnostic Branch Center of Yunnan Cancer Center, Yunnan Cancer Hospital, Kunming 650118, China
| | - L Y Ma
- Molecular Diagnostic Branch Center of Yunnan Cancer Center, Yunnan Cancer Hospital, Kunming 650118, China
| | - X Liu
- Molecular Diagnostic Branch Center of Yunnan Cancer Center, Yunnan Cancer Hospital, Kunming 650118, China
| | - X X Wang
- Yunnan Provincial Key Laboratory of Lung Cancer, Kunming 650118, China
| | - H S Li
- Yunnan Provincial Key Laboratory of Lung Cancer, Kunming 650118, China
| | - J X Liu
- Yunnan Provincial Key Laboratory of Lung Cancer, Kunming 650118, China
| | - Z H Shen
- Office of Yunnan Cancer Center, Yunnan Cancer Hospital, Kunming 650118, China
| | - Y J Guo
- Plateau Regional High-Rise Cancer International Cooperation Laboratory of Ministry of Education, Kunming 650118, China
| | - Y X Du
- Plateau Regional High-Rise Cancer International Cooperation Laboratory of Ministry of Education, Kunming 650118, China
| | - R J Yang
- Yunnan Provincial Key Laboratory of Lung Cancer, Kunming 650118, China
| | - Y C Huang
- Molecular Diagnostic Branch Center of Yunnan Cancer Center, Yunnan Cancer Hospital, Kunming 650118, China
| | - M Dai
- Office of Cancer Screening, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Q Zhang
- Medical Center, Yunnan Cancer Hospital, Kunming 650118, China
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Zhou YC, Xia T, Mou YP, Lu C, Jin WW, Wu XS, Shao HL, Wang YY. [Laparoscopic gastroduodenostomy with manual suture for Billroth Ⅰ anastomosis: a report of 36 cases]. Zhonghua Wai Ke Za Zhi 2020; 58:383-387. [PMID: 32393006 DOI: 10.3760/cma.j.cn112139-20191119-00566] [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
Objective: To examine the clinical efficiency of laparoscopic gastroduodenostomy with BillrothⅠanastomosis with manual suture. Methods: The clinic data of 36 patients with gastric cancer who underwent laparoscopic gastroduodenostomy with Billroth Ⅰ anastomosis from November 2017 to September 2019 in Department of Gastrointestinal and Pancreatic Surgery, Zhejiang Provincial People's Hospital were analyzed retrospectively.There were 22 males and 14 females, aged (64.3±9.3) years(range: 43 to 80 years), underwent complete laparoscopic gastroduodenostomy. The laparoscopic manual suture was used for Billroth Ⅰ anastomosis. Results: All the laparoscopic radical gastrectomy and manual suturing gastroduodenostomy were successfully performed. The operation time was (226.7±40.4) minutes (range: 180 to 320 minutes), including (24.8±7.1) minutes (range: 15 to 48 minutes) for gastroduodenostomy.There was (3.8±0.9) days (range: 2 to 6 days) for anal exhaust, (5.7±2.0) days (range: 3 to 13 days) for extubation of gastric tube, and (10.3±3.1) days (range: 7 to 19 days) for hospitalization. There was no death in perioperative period. Postoperative pathological report showed 3 cases of highly differentiated adenocarcinoma, 5 cases of moderately differentiated adenocarcinoma, 22 cases of poorly differentiated adenocarcinoma and 6 cases of signet ring cell carcinoma, including 27 cases in T1 stage and 9 cases in T2 stage. The number of lymph nodes harvested was 36.4±8.9 (range: 23 to 60). Lymph node metastasis was positive in 7 cases and negative in 29 cases. TNM stage included 24 cases in ⅠA stage, 8 cases in ⅠB stage and 4 cases in Ⅱ stage. After the operation, the upper digestive tract radiography showed that the anastomosis opening was unobstructed without complications such as anastomotic stenosis. Conclusion: Laparoscopic gastroduodenostomy with Billroth Ⅰ anastomosis with manual suture is safe and feasible, has a good short-term effect.
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Affiliation(s)
- Y C Zhou
- Department of Gastrointestinal and Pancreatic Surgery, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou 310014, China
| | - T Xia
- Department of Gastrointestinal and Pancreatic Surgery, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou 310014, China
| | - Y P Mou
- Department of Gastrointestinal and Pancreatic Surgery, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou 310014, China
| | - C Lu
- Department of Gastrointestinal and Pancreatic Surgery, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou 310014, China
| | - W W Jin
- Department of Gastrointestinal and Pancreatic Surgery, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou 310014, China
| | - X S Wu
- Department of Gastrointestinal and Pancreatic Surgery, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou 310014, China
| | - H L Shao
- Department of Gastrointestinal and Pancreatic Surgery, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou 310014, China
| | - Y Y Wang
- Department of Gastrointestinal and Pancreatic Surgery, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou 310014, China
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Yang SY, Liu Y, Mao J, Wu YB, Deng YL, Qi SC, Zhou YC, Gong SQ. The antibiofilm and collagen-stabilizing effects of proanthocyanidin as an auxiliary endodontic irrigant. Int Endod J 2020; 53:824-833. [PMID: 32053733 DOI: 10.1111/iej.13280] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Accepted: 02/11/2020] [Indexed: 11/29/2022]
Abstract
AIM To evaluate the antibiofilm effect of proanthocyanidin (PA) solution as an irrigant against Enterococcus faecalis (E. faecalis) and its influence on the mechanical properties and biodegradation resistance of demineralized root dentine. METHODOLOGY Enterococcus faecalis were introduced into human root dentine tubules by a serial centrifugation method and grown for 1 week. Dentine blocks infected with 1-week-old E. faecalis biofilms were treated with the following irrigants: sterile water (control), 2% chlorhexidine (CHX), 2% PA, 5% PA and 10% PA. After treatment, the live and dead bacteria proportions within E. faecalis biofilms were analysed using confocal laser scanning microscopy. To evaluate the biostability of fully demineralized dentine treated by the aforementioned irrigants, the elastic modulus and hydroxyproline release of human dentine incubated in collagenase solution were tested at baseline, after irrigant treatment and after biodegradation, respectively. Furthermore, the surface chemical bond of demineralized dentine collagen treated by various irrigants was characterized by X-ray photoelectron spectroscopy (XPS). Statistical analysis was performed using one-way anova and Tukey's post hoc multiple comparisons with the significance level at 5%. RESULTS The proportion of dead E. faecalis volume was significantly higher in the PA and CHX groups than that in the control group (P < 0.05). PA irrigation significantly increased the mechanical properties of demineralized dentine (P < 0.05), and the effect was enhanced with increasing PA concentration. CHX and PA groups had significantly less elasticity loss and hydroxyproline release (P < 0.05). The biomodification of dentine collagen by PA was verified by increased C-O/C-N peak percentage under C1s and C-O peak percentage under O1s narrow-scan XPS spectra. CONCLUSIONS Proanthocyanidin killed E. faecalis within biofilms and enhanced the biostability of the collagen matrix of demineralized root dentine. It might be used as an auxiliary endodontic irrigant with antibiofilm and collagen-stabilizing effects.
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Affiliation(s)
- S Y Yang
- Center of Stomatology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Shanghai Key Laboratory of Stomatology and Shanghai Research Institute of Stomatology, Department of Oral Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Y Liu
- Laboratory of Biomimetic Nanomaterials, Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, China
| | - J Mao
- Center of Stomatology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Y B Wu
- Center of Stomatology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Y L Deng
- Center of Stomatology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - S C Qi
- Department of Stomatology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Y C Zhou
- The Stony Brook School, Stony Brook, NY, USA
| | - S Q Gong
- Center of Stomatology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Fan HJ, Huang C, Su Y, Wang XD, Zhou YC, Duan C, Zhao W, Zhao Q, Jin M, Ma XL. [Clinical characteristics and prognosis of high-risk neuroblastoma with bone marrow metastasis in children]. Zhonghua Er Ke Za Zhi 2019; 57:863-869. [PMID: 31665841 DOI: 10.3760/cma.j.issn.0578-1310.2019.11.009] [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
Objective: To analyze the clinical characteristics of newly treated high-risk group neuroblastoma (NB) patients with bone marrow metastasis and to explore the prognostic factors. Methods: The clinical features (sex, age, stage, risk group, pathological type, metastatic site, etc.) of 203 newly treated high-risk NB patients with bone marrow metastasis admitted to Hematology Oncology Center, Beijing Children's Hospital from January 2007 to December 2016 were analyzed retrospectively. There were 118 males (58.1%) and 85 females (41.9%). Kaplan-Meier method was used for survival analysis and Cox regression was used to analyze the prognostic factors. Results: The age at onset of the 203 patients was 41 months (9-147 months). The metastatic sites at diagnosis were as follows: bone in 195 cases (96.1%), distant lymph nodes in 104 cases (51.2%), skull and endomeninx in 61 cases (30.0%), orbit in 30 cases (14.8%), pleura in 16 cases (7.9%), liver in 13 cases(6.4%), canalis spinalis in 13 cases (6.4%), other sites in 11 cases (5.4%) and skin and soft tissue in 10 cases (4.9%). In all, 194 cases were enrolled for prognostic analysis. The follow-up time was 36 months (1 day-138 months) , and the 5-years event free survival (EFS) and overall survival (OS) were 36.1% and 39.7%, respectively. A total of 118 patients (60.8%) had events (first relapse or death) with the time to event occurrence was 15 months (1 day-72 months), whereas 112 patients (57.7%) died with the event occurrence to death time was 3 months (1 day-21 months). There was no significant difference in 5-years OS between radiotherapy group and non-radiotherapy group (42.3% vs. 38.3%, χ(2)=3.671, P=0.055). The 5-years OS in transplantation group was significantly better than the non-transplantation group (44.3% vs. 35.5%, χ(2)=8.878, P=0.003), and the radiotherapy combined transplantation group also had a better 5-years OS rate than the non-radiotherapy combined transplantation group (45.8% vs. 37.3%, χ(2)=5.945, P=0.015). Univariate survival analysis showed lactate dehydrogenase ≥ 1 500 U/L, the amplification of MYCN, the metastatic sites of orbit, canalis spinalis and pleura were associated with poor prognosis of newly diagnosed high-risk NB patients (χ(2)=21.064, 13.601, 3.998, 6.183, 15.307, all P<0.05). The amplification of MYCN and the metastatic sites of pleura were risk factors for prognosis of newly diagnosed high-risk NB patients by Cox regression models (HR=1.896,1.100, 95%CI: 1.113-3.231, 1.020-1.187, both P<0.05). Conclusions: The prognosis is unfavorable in high-risk group NB patients with BM metastasis. Radiotherapy combined with transplantation can further improve the prognosis of these patients. The amplification of MYCN and the metastatic sites of pleura were the poor prognostic factors for high-risk NB patients with bone marrow metastasis.
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Affiliation(s)
- H J Fan
- Hematology Oncology Center, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing Key Laboratory of Pediatric Hematology Oncology, National Discipline of Pediatrics, Ministry of Education, MOE Key Laboratory of Major Diseases in Children, Beijing 100045, China
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Qian ZY, Wen Y, Lou GC, Zhang J, Wang YY, Jin WW, Zhou YC, Mou YP. [Preliminary application of endoscopic titanium clip localization combined with three-dimensional CT reconstruction in the determination of resection margin of gastric central cancer under laparoscopy]. Zhonghua Wai Ke Za Zhi 2019; 57:38-43. [PMID: 31510731 DOI: 10.3760/cma.j.issn.0529-5815.2019.10.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To evaluate the accuracy of endoscopic titanium clip localization combined with CT three-dimensional reconstruction for the control of incision margin in early gastric cancer under laparoscopy. Methods: A prospective analysis was made for gastric cancer whose lesions were located in the middle of the stomach and T stage was 1 to 2 from October 2017 to January 2019 at Department of Gastrointestinal and Pancreatic Surgery, Zhejiang Provincial People's Hospital. Totally 25 patients were eventually enrolled in the study. There were 17 males and 8 females aging of (63.6± 7.2) years (range: 48 to 77 years). All cases were treated with titanium clip localization under endoscope combined with CT three-dimensional (3D) reconstruction to construct a virtual panorama of gastric cavity and lesions, and to design surgical margins. Laparoscopic surgical resection was performed according to the surgical margins designed before operation. The distance from the gastric angle to the origin of the minor curvature of the incisional margin, the distance from the gastric angle to the the center of lesion and the distance of the upper incision margin were measured under three-dimensional CT reconstruction and under actual specimen. Paired t test was used to compare the three distances measured by two methods. Results: The measured distances from the gastric angle to the center of the lesion and the proximal incisional margin under 3D reconstruction CT were according to the measured values of actual specimens ((2.67±1.38) cm vs. (2.83±1.56) cm, t=1.51, P=0.14; (5.23±0.60) cm vs. 5 cm, t=1.93, P=0.07); the measured distances from the gastric angle to the origin of the minor curvature of the incisional margin under CT 3D reconstruction were different with the measured values of solid specimens ((5.94±0.94) cm vs. (6.37±0.90) cm, t=3.52, P=0.00). Conclusion: The method of titanium clip localization combined with CT 3D reconstruction can provide a feasible laparoscopic localization method and incision edge solution for T1 to 2 gastric central cancer.
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Affiliation(s)
- Z Y Qian
- Department of Gastrointestinal and Pancreatic Surgery, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou 310014, China
| | - Y Wen
- Department of Radiology, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou 310014, China
| | - G C Lou
- Department of Gastroenterology, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou 310014, China
| | - J Zhang
- Department of Gastroenterology, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou 310014, China
| | - Y Y Wang
- Department of Gastrointestinal and Pancreatic Surgery, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou 310014, China
| | - W W Jin
- Department of Gastrointestinal and Pancreatic Surgery, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou 310014, China
| | - Y C Zhou
- Department of Gastrointestinal and Pancreatic Surgery, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou 310014, China
| | - Y P Mou
- Department of Gastrointestinal and Pancreatic Surgery, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou 310014, China
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Chen Z, Guan H, Wang X, Dong R, Zhuo C, Mao D, Pan R, Zhou Y, Wu W. [Pyramiding of 3-resistant-gene to improve rice blast resistance of a restorer line, Fuhui 673]. Sheng Wu Gong Cheng Xue Bao 2019; 35:837-846. [PMID: 31223002 DOI: 10.13345/j.cjb.180459] [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: 11/22/2022]
Abstract
To improve the blast resistance of elite rice restorer line Fuhui 673, 3 blast resistance genes Pi-1, Pi-9 and Pi-kh were introduced into Fuhui 673 from a good-quality restorer line Jinhui 1059 through 3 successive backcrosses followed by one selfing using the technique of marker-assisted selection. Ten near-isogenic lines (NILs) of Fuhui 673 carrying the 3 introduced resistance genes were created. Genotype analysis using 68 SSR markers evenly distributed in the genome indicated that 92.96%-98.59% of the NILs' genetic background had been recovered to Fuhui 673. Both indoor and field resistance tests indicated that the NILs and their hybrids with sterile line Yixiang A were all resistant to rice blast, with resistance levels significantly higher than those of controls Fuhui 673 and hybrid Yiyou 673 (Yixiang A Fuhui 673). In addition, among the 10 hybrids between the NILs and Yixiang A, 2 showed significantly higher yield than and 4 displayed similar yield to that of control Yiyou 673, suggesting that most of the NILs retained the elite characteristics of Fuhui 673. Two new hybrid rice cultivars Liangyou 7283 and Jintaiyou 683 from NIL Line 9 showed high yield, good resistance to blast and moderate growth period in regional trial, suggesting that the NIL Line 9 has a good prospect for application.
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Affiliation(s)
- Zhiwei Chen
- Fujian Provincial Key Laboratory of Crop Breeding by Design, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian, China
| | - Huazhong Guan
- Fujian Provincial Key Laboratory of Crop Breeding by Design, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian, China
| | - Xiaofang Wang
- Rice Research Institute, Fujian Academy of Agricultural Sciences, Fuzhou 350003, Fujian, China
| | - Ruixia Dong
- Rice Research Institute, Fujian Academy of Agricultural Sciences, Fuzhou 350003, Fujian, China
| | - Chenghai Zhuo
- Fujian Provincial Key Laboratory of Crop Breeding by Design, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian, China
| | - Damei Mao
- Fujian Provincial Key Laboratory of Crop Breeding by Design, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian, China
| | - Runsen Pan
- Fujian Provincial Key Laboratory of Crop Breeding by Design, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian, China
| | - Yuanchang Zhou
- Fujian Provincial Key Laboratory of Crop Breeding by Design, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian, China
| | - Weiren Wu
- Fujian Provincial Key Laboratory of Crop Breeding by Design, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian, China
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Chen B, Yin G, Whelan J, Zhang Z, Xin X, He J, Chen X, Zhang J, Zhou Y, Lu X. Composition of Mitochondrial Complex I during the Critical Node of Seed Aging in Oryza sativa. J Plant Physiol 2019; 236:7-14. [PMID: 30840921 DOI: 10.1016/j.jplph.2019.02.008] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Revised: 01/20/2019] [Accepted: 02/19/2019] [Indexed: 05/10/2023]
Abstract
Previous studies have documented mitochondrial dysfunction during the critical node (CN) of rice (Oryza sativa) seed aging, including a decrease in the capacity of NADH dependent O2 consumption. This raises the hypothesis that changes in the activity of NADH:ubiquinone oxidoreductase (complex I) may play a role in seed aging. The composition and activity of complex I was investigated at the CN of aged rice seeds. Using BN-PAGE and SWATH-MS 52 complex I subunits were identified, nineteen for the first time to be experimentally detected in rice. The subunits of the matrix arm (N and Q modules) were reduced in abundance at the CN, in accordance with a reduction in the capacity to oxidise NADH, reducing substrate oxidation and increase ROS accumulation. In contrast, subunits in the P module increased in abundance that contains many mitochondrial encoded subunits. It is proposed that the changes in complex I abundance subunits may indicate a premature re-activation of mitochondrial biogenesis, as evidenced by the increase in mitochondrial encoded subunits. This premature activation of mitochondrial biogenesis may under-pin the decreased viability of aged seeds, as mitochondrial biogenesis is a crucial event in germination to drive growth before autotrophic growth of the seedling is established.
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Affiliation(s)
- Baoyin Chen
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crop, College of Crop Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China; National Crop Genebank, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China; Fujian Provincial Key Laboratory of Crop Breeding by Design, College of Crop Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Guangkun Yin
- National Crop Genebank, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - James Whelan
- Australian Research Council Centre of Excellence in Plant Energy Biology, School of Life Science, La Trobe University, Bundoora, Victoria 3083, Australia
| | - Zesen Zhang
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crop, College of Crop Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China; National Crop Genebank, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China; Fujian Provincial Key Laboratory of Crop Breeding by Design, College of Crop Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Xia Xin
- National Crop Genebank, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Juanjuan He
- National Crop Genebank, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Xiaoling Chen
- National Crop Genebank, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Jinmei Zhang
- National Crop Genebank, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Yuanchang Zhou
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crop, College of Crop Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China; Fujian Provincial Key Laboratory of Crop Breeding by Design, College of Crop Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Xinxiong Lu
- National Crop Genebank, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
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Xu XW, Zhang RC, Mou YP, Qian ZY, Huang CJ, Zhu QC, Jin WW, Zhou YC. [Laparoscopic radical antegrade modular pancreatosplenectomy for left-sided pancreatic adenocarcinoma: analysis of 12 cases]. Zhonghua Wai Ke Za Zhi 2019. [PMID: 29534416 DOI: 10.3760/cma.j.issn.0529-5815.2018.03.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To evaluate the safety and feasibility of laparoscopic radical antegrade modular pancreatosplenectomy(Lap-RAMPS) for left-sided pancreatic adenocarcinoma. Methods: Clinical data of total 12 patients underwent Lap-RAMPS for left-sided pancreatic adenocarcinoma at Department of Gastrointestinal and Pancreatic Surgery, Zhejiang Provincial People's Hospital from March 2016 to August 2017 were reviewed retrospectively.There were 7 male patients and 5 female patients, with median age of 60.5 years old(47-68 years old). Abdominal enhanced CT, pancreatic MRI, PET-CT were performed on all patients to evaluate the lesion and exclude metastasis.Follow-up were done with out-patient clinic or telephone consultancy until October 2017. Results: All patients underwent pure Lap-RAMPS.The medium operative time was 250 minutes(180-445 minutes), and the blood loss was 150 ml(50-500 ml). The medium first flatus time and diet resumption time were 3.0 days(1-5 days) and 3.5 days(1-7 days) respectively.The medium postoperative hospital stay was 9 days(4-18 days). Morbidity occurred in 8 patients with gastric empty delay(n=1), bleeding(n=1), fluid collection(n=3). There was no mortality.The medium overall number of retrived lymph nodes was 15.6 and the positive rate was 41.7%. The R0 rate was 100%.The medium follow-up was 10 months.One patient was diagnosed as liver metastasis after 8 months and accepted chemotherapy.One patient died after 14 months for tumor recurrence and metastasis.Others survived without tumor recurrence or metasitasis. Conclusion: Lap-RAMPS is safe and feasible with accepted oncological outcomes for selected left side pancreatic adenocarcinoma under skilled hands.
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Affiliation(s)
- X W Xu
- Department of Gastrointestinal and Pancreatic Surgery, Zhejiang Provincial People's Hospital, Key Laboratory of Gastroenterology of Zhejiang Province, Hangzhou 310014, China
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Zhu S, Zhang X, Liu Q, Luo T, Tang Z, Zhou Y. The genetic diversity and relationships of cauliflower (Brassica oleracea var. botrytis) inbred lines assessed by using SSR markers. PLoS One 2018; 13:e0208551. [PMID: 30521622 PMCID: PMC6283626 DOI: 10.1371/journal.pone.0208551] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Accepted: 11/19/2018] [Indexed: 11/30/2022] Open
Abstract
Inbred lines are important germplasm in cauliflower breeding programs. To understand the genetic diversity and relationships of cauliflower inbred lines, the use of simple sequence repeat (SSR) markers will be of great value for parental line selection and breeding strategy design. In this study, the genetic diversity and relationships of 165 cauliflower inbred lines primarily derived from southeast China were assessed using SSR markers. Forty-three SSR markers were polymorphic across these inbred lines and generated a total of 111 alleles. The mean values of the number of alleles (Na), effective number of alleles (Ne), Shannon's Information index (I), and polymorphism information content (PIC) per locus were 2.581, 1.599, 0.517 and 0.316, respectively. Genetic distance values among all pairs of the inbred lines varied from 0 to 0.67 with an average of 0.30. On the basis of genetic distance data estimated with the SSR markers, the 165 cauliflower inbred lines were classified into four main clusters (from group Ⅰ to group Ⅳ) by cluster analysis and four subpopulations (from POP 1 to POP 4) by structure analysis. The classification patterns of most cauliflower inbred lines were not consistent with their curd maturity, curd solidity or geographic origins. These results based on estimates by the SSR markers, suggested the genetic diversity of the 165 cauliflower inbred lines was relatively narrow. Therefore, pyramiding the valuable genes among different types of the cauliflower inbred lines is important to increase the genetic diversity to obtain desirable hybridization combinations. The information generated in this report will be useful for assessing germplasm and breeding in cauliflower.
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Affiliation(s)
- Shiyang Zhu
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, College of Crop Science, Fujian Agriculture and Forestry University, Fuzhou, P.R. China
- Key Laboratory of Crop Breeding in South Zhejiang, Wenzhou Vocational College of Science and Technology, Wenzhou, P.R. China
| | - Xiaoling Zhang
- Key Laboratory of Crop Breeding in South Zhejiang, Wenzhou Vocational College of Science and Technology, Wenzhou, P.R. China
| | - Qing Liu
- Key Laboratory of Crop Breeding in South Zhejiang, Wenzhou Vocational College of Science and Technology, Wenzhou, P.R. China
| | - Tiankuan Luo
- Key Laboratory of Crop Breeding in South Zhejiang, Wenzhou Vocational College of Science and Technology, Wenzhou, P.R. China
| | - Zheng Tang
- Key Laboratory of Crop Breeding in South Zhejiang, Wenzhou Vocational College of Science and Technology, Wenzhou, P.R. China
| | - Yuanchang Zhou
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, College of Crop Science, Fujian Agriculture and Forestry University, Fuzhou, P.R. China
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Huang B, Zhang J, Zhou Y, Chen X. Oxidative damage and anti-oxidative indicators in rice 48h-germinated embryos during cryopreservation. Cryobiology 2018. [DOI: 10.1016/j.cryobiol.2018.10.127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Lu C, Jin WW, Mou YP, Zhou YC, Zhu QC, Shao HL, Chen K, Li SD. [Experience on postoperative complications of laparoscopic pancreaticoduodenectomy]. Zhonghua Wai Ke Za Zhi 2018; 56:822-827. [PMID: 30392301 DOI: 10.3760/cma.j.issn.0529-5815.2018.11.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To summarize the incidence and characteristics of postoperative complications after laparoscopic pancreaticoduodenectomy(LPD), and to share our experience on management of complications. Methods: The clinical data of 320 LPD performed by a single team in Sir Run Run Shaw Hospital and Zhejiang Provincial People's Hospital between September 2012 and September 2017 were retrospectively analyzed, among which there were 196 males and 124 females with age of (60.2±11.6) years old.There were 306 patients who underwent standard LPD, and 14 patients who underwent extended LPD. The patients were divided into 2 groups of former 160 LPD and later 160 LPD according to the time order. By analyzing the differences of clinical outcomes between the two groups, especially focusing on the incidence of postoperative complications.The experience on management of complications was concluded. The prior surgical history of latter group was significantly higher than the former group(30.0%(48/160)vs. 18.8%(30/160), χ(2)=5.49, P=0.019), and the rest of baseline characteristics remained the comparable (P>0.05). For resectable lesions, LPD was performed by "No back" approach, following the principle of "From distal to cephalad, from ventral to dorsal, and from left to right" . As for the borderline resectable patients, LPD was performed by "Easy first" strategy. Student t test, χ(2) test or Fisher test was used to analyzed the data between the two groups respectively. Results: Of 320 LPD patients, 306 cases underwent standard LPD, 14 cases underwent LPD with resection of other organs.There were 278 LPD cases who followed "No back" approach, and 42 cases who followed "Easy first" strategy because of difficulty in creating the retro-pancreatic tunnel. And the overall morbidity was 32.2%(103/320) with reoperation rate of 5.3%(17/320). The perioperative mortality was 0.6%(2/320). The operation time of latter group was ((346.6±48.8)minutes), which was shorter than that of former group((358.0±54.4)minutes)(t=1.97, P=0.048). The blood loss of former and latter group remained comparable((207.9±135.8)ml vs.(189.6±121.4)ml, P=0.205). However, in subgroup analysis, the patients with blood loss less <200 ml of latter group decreased significantly from 59.4%(95/160) to 47.5%(76/160)(χ(2)=4.53, P=0.033). The overall morbidity of latter group was 28.8%(46/160), indicated a decrease from 35.6%(57/160) of former group without significant difference(P=0.188). Moreover, Grade A/B/C pancreatic fistula rate, Grade A/C bile leakage rate, Grade B/C postoperative hemorrhage rate of the later group tended to decrease, although they also didn't reach a significant difference. However, the abdominal infection rate decreased significantly(χ(2)=3.93, P=0.047). The length of hospital stay remained comparable(P=0.156). Conclusions: The most common complications after LPD were postoperative hemorrhage and pancreatic fistula. With specialized team and accumulated experience, the morbidity can decrease progressively by analyzing the leading cause and improving the technical skills.
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Affiliation(s)
- C Lu
- Department of Gastroenterology and Pancreatic Surgery, Zhejiang Provincial People's Hospital, Hangzhou 310014, China
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Tian D, Yang L, Chen Z, Chen Z, Wang F, Zhou Y, Luo Y, Yang L, Chen S. Proteomic analysis of the defense response to Magnaporthe oryzae in rice harboring the blast resistance gene Piz-t. Rice (N Y) 2018; 11:47. [PMID: 30112588 PMCID: PMC6093832 DOI: 10.1186/s12284-018-0240-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Accepted: 08/02/2018] [Indexed: 05/21/2023]
Abstract
BACKGROUND Rice blast (caused by Magnaporthe oryzae) is one of the most destructive diseases of rice. While many blast resistance (R) genes have been identified and deployed in rice cultivars, little is known about the R gene-mediated defense mechanism. We used a rice transgenic line harboring the resistance gene Piz-t to investigate the R gene-mediated resistance response to infection. RESULTS We conducted comparative proteome profiling of the Piz-t transgenic Nipponbare line (NPB-Piz-t) and wild-type Nipponbare (NPB) inoculated with M. oryzae at 24, 48, 72 h post-inoculation (hpi) using isobaric tags for relative and absolute quantification (iTRAQ) analysis. Comparative analysis of the response of NPB-Piz-t to the avirulent isolate KJ201 and the virulent isolate RB22 identified 114 differentially expressed proteins (DEPs) between KJ201-inoculated NPB-Piz-t (KJ201-Piz-t) and mock-treated NPB-Piz-t (Mock-Piz-t), and 118 DEPs between RB22-inoculated NPB-Piz-t (RB22-Piz-t) and Mock-Piz-t. Among the DEPs, 56 occurred commonly in comparisons KJ201-Piz-t/Mock-Piz-t and RB22-Piz-t/Mock-Piz-t. In a comparison of the responses of NPB and NPB-Piz-t to isolate KJ201, 93 DEPs between KJ201-Piz-t and KJ201-NPB were identified. DEPs in comparisons KJ201-Piz-t/Mock-Piz-t, RB22-Piz-t/Mock-Piz-t and KJ201-Piz-t/KJ201-NPB contained a number of proteins that may be involved in rice response to pathogens, including pathogenesis-related (PR) proteins, hormonal regulation-related proteins, defense and stress response-related proteins, receptor-like kinase, and cytochrome P450. Comparative analysis further identified 7 common DEPs between the comparisons KJ201-Piz-t/KJ201-NPB and KJ201-Piz-t/RB22-Piz-t, including alcohol dehydrogenase I, receptor-like protein kinase, endochitinase, similar to rubisco large subunit, NADP-dependent malic enzyme, and two hypothetical proteins. CONCLUSIONS Our results provide a valuable resource for discovery of complex protein networks involved in the resistance response of rice to blast fungus.
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Affiliation(s)
- Dagang Tian
- Biotechnology Research Institute, Fujian Key Laboratory of Genetic Engineering for Agriculture, Fujian Academy of Agricultural Sciences, Fuzhou, 350003, China
- College of Crop Science, Fujian Agricultural and Forestry University, Fuzhou, 350002, China
| | - Liu Yang
- College of Biology and the Environment, Nanjing Forestry University, Nanjing, 210037, China
| | - Zaijie Chen
- Biotechnology Research Institute, Fujian Key Laboratory of Genetic Engineering for Agriculture, Fujian Academy of Agricultural Sciences, Fuzhou, 350003, China
| | - Ziqiang Chen
- Biotechnology Research Institute, Fujian Key Laboratory of Genetic Engineering for Agriculture, Fujian Academy of Agricultural Sciences, Fuzhou, 350003, China
| | - Feng Wang
- Biotechnology Research Institute, Fujian Key Laboratory of Genetic Engineering for Agriculture, Fujian Academy of Agricultural Sciences, Fuzhou, 350003, China
| | - Yuanchang Zhou
- College of Crop Science, Fujian Agricultural and Forestry University, Fuzhou, 350002, China
| | - Yuming Luo
- College of Life Sciences, Huaiyin Normal University, Huaian, 223300, China
| | - Liming Yang
- College of Biology and the Environment, Nanjing Forestry University, Nanjing, 210037, China.
| | - Songbiao Chen
- Biotechnology Research Institute, Fujian Key Laboratory of Genetic Engineering for Agriculture, Fujian Academy of Agricultural Sciences, Fuzhou, 350003, China.
- Institute of Oceanography, Marine Biotechnology Center, Minjiang University, Fuzhou, 350108, China.
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Aras BS, Zhou YC, Dawes A, Chou CS. The importance of mechanical constraints for proper polarization and psuedo-cleavage furrow generation in the early Caenorhabditis elegans embryo. PLoS Comput Biol 2018; 14:e1006294. [PMID: 29985915 PMCID: PMC6053242 DOI: 10.1371/journal.pcbi.1006294] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Revised: 07/19/2018] [Accepted: 06/11/2018] [Indexed: 12/26/2022] Open
Abstract
Intracellular polarization, where a cell specifies a spatial axis by segregation of specific factors, is a fundamental biological process. In the early embryo of the nematode worm Caenorhabditis elegans (C. elegans), polarization is often accompanied by deformations of the cortex, a highly contractile structure consisting of actin filaments cross-linked by the motor protein myosin (actomyosin). It has been suggested that the eggshell surrounding the early embryo plays a role in polarization although its function is not understood. Here we develop a mathematical model which couples a reaction-diffusion model of actomyosin dynamics with a phase field model of the cell cortex to implicitly track cell shape changes in the early C. elegans embryo. We investigate the potential rigidity effect of the geometric constraint imposed by the presence and size of the eggshell on polarization dynamics. Our model suggests that the geometric constraint of the eggshell is essential for proper polarization and the size of the eggshell also affects the dynamics of polarization. Therefore, we conclude that geometric constraint on a cell might affect the dynamics of a biochemical process. Polarization, whereby molecules and proteins are asymmetrically distributed throughout the cell, is a vital process for many cellular functions. In the early C. elegans embryo the asymmetric distribution of cell cytoskeleton during the initiation of polarization leads to asymmetric contractions which are higher in the anterior and lower in the posterior of a cell. The C. elegans embryo is surrounded by a rigid body, the eggshell, which functions in numerous cell processes. We investigate the structural support of eggshell during the establishment phase by tracking the moving cell surface. We incorporate protein dynamics involved in polarization into the membrane evolution. We conclude that eggshell might have a role in cell polarization by preventing the distortion of cell surface.
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Affiliation(s)
- Betül Senay Aras
- Department of Mathematics, The Ohio State University, Columbus, Ohio, United States of America
| | - Y C Zhou
- Department of Mathematics, Colorado State University, Fort Collins, Colorado, United States of America
| | - Adriana Dawes
- Department of Mathematics, The Ohio State University, Columbus, Ohio, United States of America.,Department of Molecular Genetics, The Ohio State University, Columbus, Ohio, United States of America
| | - Ching-Shan Chou
- Department of Mathematics, The Ohio State University, Columbus, Ohio, United States of America
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Jin WW, Lu C, Mou YP, Xu XW, Zhang RC, Zhou YC, Qian ZY, Huang CJ. [Strategy in management of adjacent organ lesion during laparoscopic pancreaticoduodenectomy]. Zhonghua Wai Ke Za Zhi 2018; 56:522-527. [PMID: 30032534 DOI: 10.3760/cma.j.issn.0529-5815.2018.07.008] [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
Objective: To evaluate the safety and feasible of adjacent organ resection during laparoscopic pancreaticoduodenectomy(LPD), and summary the surgical strategies. Methods: Clinical data of 15 adjacent organ resections combined with LPD from March 2013 to September 2017 were reviewed.There were 10 male and 5 female patients aging from 20 to 86 years, and the body mass index ranged from 19.6 to 34.5 kg/m(2).Two patients had previous abdominal surgical history.Two patients underwent preoperative chemotherapy. Results: The resected adjacent organs included liver(n=4), stomach(n=3), colon(n=6), right kidney with embolectomy and vasoplastic of inferior vena cava(n=1), and spleen artery aneurysms(n=1). The operative time ranged from 280 to 450 minutes, and the blood loss ranged from 100 to 450 ml.The total complication rate was 5/15 and no one died in 90 days after surgery.The postoperative hospital stay ranged from 10 to 42 days with medium 18 days.The pathology included adenocarcinoma of stomach and duodenum(n=1), gastric cancer invading pancreas or duodenum(n=2), ampullary adenocarcinoma with left hepatolithiasis(n=1), ampullary adenocarcinoma with a benign lesion in left liver(n=1), ampullary adenocarcinoma with single liver metastasis(n=1), ampullary adenocarcinoma(n=1), pancreatic intraductal papillary mucinous neoplasm with splenic artery aneurysms(n=1), pancreatic neuroendocrine neoplasm with colon cancer(n=1), distal common bile duct adenocarcinoma involving righ hepatic duct(n=1), pancreatic neuroendocrine neoplasm invading inferior vena cava and right renal vein(n=1), duodenal adnocarcinoma(n=1), duodenal ewing's sarcoma(n=1), duodenal intesititialoma(n=2). The follow-up was from 3 to 40 months with the medium survival of 17.5 months. Conclusions: The oncological outcomes of PD combined with adjacent organ resection is acceptable.Surgical treatment for those patients with periampullary neoplasma and adjacent organ lesions should be aggressive.
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Affiliation(s)
- W W Jin
- Department of Gastrointestinal and Pancreatic Surgery, Key Laboratory of Gastroenterology of Zhejiang Province, Zhejiang Provincial People's Hospital, Hangzhou 310014, China
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Xu LX, Lin YX, Wang LH, Zhou YC. Dehiscence method: a seed-saving, quick and simple viability assessment in rice. Plant Methods 2018; 14:68. [PMID: 30116291 PMCID: PMC6085679 DOI: 10.1186/s13007-018-0334-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Accepted: 07/30/2018] [Indexed: 05/08/2023]
Abstract
BACKGROUND Seed viability monitoring is very important in ex situ germplasm preservation to detect germplasm deterioration. This requires seed-, time- and labor- saving methods with high precision to assess seed germination as viability. Although the current non-invasive, rapid, sensing methods (NRSs) are time- and labor-saving, they lack the precision and simplicity which are the virtues of traditional germination. Moreover, they consume a considerable amount of seeds to adjust sensed signals to germination percentage, which disregards the seed-saving objective. This becomes particularly severe for rare or endangered species whose seeds are already scarce. Here we propose a new method that is precise, low-invasive, simple, and quick, which involves analyzing the pattern of dehiscence (seed coat rupture), followed by embryonic protrusion. RESULTS Dehiscence proved simple to identify. After the trial of 20 treatments from 3 rice varieties, we recognized that dehiscence percentage at the 48th hour of germination (D(48)) correlates significantly with germination rate for tested seed lots. In addition, we found that the final germination percentage corresponded to D(48) plus 5. More than 70% of the seeds survived post-dehiscence desiccation for storage. Hydrogen peroxide (1 mM) as the solution for imbibition could further improve the survival. The method also worked quicker than tetrazolium which is honored as a fast, traditional method, in detecting less vigorous but viable seeds. CONCLUSION We demonstrated the comprehensive virtues of dehiscence method in assessing rice seed: it is more precise and easier to use than NRSs and is faster and more seed-saving than traditional methods. We anticipate modifications including artificial intelligence to extend our method to increasingly diverse circumstances and species.
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Affiliation(s)
- Ling-xiang Xu
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, College of Crop Science, Fujian Agriculture and Forestry University, Jinshan, Fuzhou, 350002 People’s Republic of China
- National Genebank, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing, 100081 People’s Republic of China
| | - Yi-xin Lin
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, College of Crop Science, Fujian Agriculture and Forestry University, Jinshan, Fuzhou, 350002 People’s Republic of China
- National Genebank, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing, 100081 People’s Republic of China
| | - Li-hong Wang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122 People’s Republic of China
| | - Yuan-chang Zhou
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, College of Crop Science, Fujian Agriculture and Forestry University, Jinshan, Fuzhou, 350002 People’s Republic of China
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Abstract
This work presents a mathematical model for the localization of multiple species of diffusion molecules on membrane surfaces. Morphological change of bilayer membrane in vivo is generally modulated by proteins. Most of these modulations are associated with the localization of related proteins in the crowded lipid environments. We start with the energetic description of the distributions of molecules on curved membrane surface, and define the spontaneous curvature of bilayer membrane as a function of the molecule concentrations on membrane surfaces. A drift-diffusion equation governs the gradient flow of the surface molecule concentrations. We recast the energetic formulation and the related governing equations by using an Eulerian phase field description to define membrane morphology. Computational simulations with the proposed mathematical model and related numerical techniques predict (i) the molecular localization on static membrane surfaces at locations with preferred mean curvatures, and (ii) the generation of preferred mean curvature which in turn drives the molecular localization.
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Affiliation(s)
- Michael Mikucki
- Department of Applied Mathematics & Statistics, Colorado School of Mines, Golden, Colorado, 80401-1887
| | - Y C Zhou
- Department of Mathematics, Colorado State University, Fort Collins, Colorado, 80523-1874
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Jin WW, Xu XW, Mou YP, Zhou YC, Zhang RC, Yan JF, Zhou JY, Huang CJ, Lu C. [Laparoscopic pancreaticoduodenectomy: a report of 233 cases by a single team]. Zhonghua Wai Ke Za Zhi 2017; 55:354-358. [PMID: 28464575 DOI: 10.3760/cma.j.issn.0529-5815.2017.05.009] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To summary the experience of 233 cases of laparoscopic pancreaticoduodenectomy (LPD) performed by a single surgical team. Methods: Data of patients undergoing LPD from September 2012 to October 2016 were reviewed. There were 145 males and 88 females with the mean age of(60.3±13.0)years old, ranging from 19 to 92 years old, and the mean body mass index of (22.8±3.5)kg/m(2,) ranging from 16.3 to 36.8 kg/m(2). There were 195 patients with clinical manifestation and 54 patients who had the history of abdominal surgery. Results: LPD were performed on 233 patients by same surgical team consecutively. The mean operative time was(368.0±57.4)minutes. Mean blood loss was(203.8±138.6)ml. The postoperative morbidity rate was 33.5%, with 6.9% of grade B or C pancreatic fistula and 9.9% of bleeding. The reoperation rate was 5.6%. The mortality during 30 days after operation was 0.9%. Mean postoperative hospital stay was (18.1±11.2)days. Mean tumor size was (3.9±2.4)cm, and the mean number of lymph nodes harvested was 21.3±11.9.One hundred and sixty-three patients were diagnosed as malignant tumor, including pancreatic adenocarcinoma(n=84), cholangiocarcinoma(n=17), ampullary adenocarcinoma(n=55), duodenal adenocarcinoma(n=5), gastric cancer(n=1)and duel cancer (n=1) located in distal stomach and duodenum. Conclusion: The key point to make laparoscopic pancreaticduodenectomy a routine safe procedure is to operate the procedure under skilled hands in selected patients via suitable surgical approaches.
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Affiliation(s)
- W W Jin
- Department of Gastro-entero-pancreatic, Zhejiang Provincial People's Hospital, Hangzhou 310014, China
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Tian D, Chen Z, Chen Z, Zhou Y, Wang Z, Wang F, Chen S. Allele-specific marker-based assessment revealed that the rice blast resistance genes Pi2 and Pi9 have not been widely deployed in Chinese indica rice cultivars. Rice (N Y) 2016; 9:19. [PMID: 27142801 PMCID: PMC4854853 DOI: 10.1186/s12284-016-0091-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2016] [Accepted: 04/14/2016] [Indexed: 05/03/2023]
Abstract
BACKGROUND The most sustainable approach to control rice blast disease is to develop durably resistant cultivars. In molecular breeding for rice blast resistance, markers developed based on polymorphisms between functional and non-functional alleles of resistance genes, can provide precise and accurate selection of resistant genotypes without the need for difficult, laborious and time-consuming phenotyping. The Pi2 and Pi9 genes confer broad-spectrum resistance against diverse blast isolates. Development of allele-specific markers for Pi2 and Pi9 would facilitate breeding of blast resistant rice by using the two blast resistance genes. RESULT In this work, we developed two new markers, named Pi9-Pro and Pi2-LRR respectively, targeting the unique polymorphisms of the resistant and susceptible alleles of Pi2 and of Pi9. The InDel marker Pi9-Pro differentiates three different genotypes corresponding to the Pi2/Piz-t, Pi9 and non-Pi2/Piz-t/Pi9 alleles, and the CAPS marker Pi2-LRR differentiates the Pi2 allele from the non-Pi2 allele. Based on the two newly developed markers and two available markers Pi2SNP and Pi9SNP, the presence of Pi2 and Pi9 was assessed in a set of 434 rice accessions consisting of 377 Chinese indica cultivars/breeding materials and 57 Chinese japonica cultivars/breeding materials. Of the 434 accessions tested, while one indica restorer line Huazhan was identified harboring the Pi2 resistance allele, no other rice line was identified harboring the Pi2 or Pi9 resistance alleles. CONCLUSIONS Allele-specific marker-based assessment revealed that Pi2 and Pi9 have not been widely incorporated into diverse Chinese indica rice cultivars. Thus, the two blast resistance genes can be new gene sources for developing blast resistant rice, especially indica rice, in China. The two newly developed markers should be highly useful for using Pi2 and Pi9 in marker-assisted selection (MAS) breeding programs.
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Affiliation(s)
- Dagang Tian
- College of Crop Science, Fujian Agricultural and Forestry University, Fuzhou, 350002, China
- Biotechnology Research Institute, Fujian Academy of Agricultural Sciences, Fuzhou, 350003, China
| | - Zaijie Chen
- Biotechnology Research Institute, Fujian Academy of Agricultural Sciences, Fuzhou, 350003, China
| | - Ziqiang Chen
- Biotechnology Research Institute, Fujian Academy of Agricultural Sciences, Fuzhou, 350003, China
| | - Yuanchang Zhou
- College of Crop Science, Fujian Agricultural and Forestry University, Fuzhou, 350002, China.
| | - Zonghua Wang
- Fujian-Taiwan Joint Center for Ecological Control of Crop Pests, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Feng Wang
- Biotechnology Research Institute, Fujian Academy of Agricultural Sciences, Fuzhou, 350003, China
| | - Songbiao Chen
- Biotechnology Research Institute, Fujian Academy of Agricultural Sciences, Fuzhou, 350003, China.
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Wang X, Zhou YC, Huang YC, Zou TN, Lü ZY, Chen Y, Liu X, Duan WS. [Estradiol stimulates the growth and biofilm formation of clinical Staphylococcus epidermidis]. Zhonghua Yi Xue Za Zhi 2016; 96:3083-3089. [PMID: 27784450 DOI: 10.3760/cma.j.issn.0376-2491.2016.38.010] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the effect of steroid hormones on the growth and biofilm formation of S. epidermidis. Methods: In all experiments, two S. epidermidis standard strains (ATCC12228 and ATCC35984) and two S. epidermidis clinical strains (SE101 and SE40) were incubated on the surface of silica gel in estradiol concentrations of 0, 50, 125, 250 and 500 pmol/L at 4, 6, 12, 24, 48 and 72 hours. Growth curve were drawn by means of the OD value. Formed biofilms were assessed by crystal violet staining methods. In order to observe the processes and structures of biofilm, the confocal laser scanning microscopy (CLSM) and scanning electron microscope (SEM) were used. Results: All of the four strains which were incubated with the concentrations of 125 pmol/L of estradiol had entered the logarithmic growth stage ahead of the blank control (3 h and 4 h). Crystal violet staining indicated that there was no biofilm for ATCC12228. Improved primary attachment abilities were found for ATCC35984 and SE101 in the presence of estradiol, and the OD values were 0 pmol/L (0.081±0.015 and 0.082±0.011), 50 pmol /L (0.087±0.013 and 0.088±0.010), 125 pmol/L (0.175±0.052 and 0.091±0.012), 250 pmol/L (0.153±0.036 and 0.090±0.006), 500 pmol/L (0.157±0.050 and 0.082±0.032), respectively. The thickness of biofilm reached the peak in 125 pmol/L estradiol at 24 h. CLSM and SEM found estradiol promoted the biofilm maturity and the biofilm of 125 pmol/L group was denser and thicker than that of the other concentration groups. Conclusions: Our in vitro experiments indicate that estradiol could promote the growth of S. epidermidis which exit on the surface of silica gel, and improve the ability of biofilm formation of S. epidermidis.
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Affiliation(s)
- X Wang
- Department of Breast Surgery 1 Ward, Third Affiliated Hospital of Kunming Medical University, the Tumor Hospital of Yunnan Province, Kunming 650118, China
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Duan Y, Li S, Chen Z, Zheng L, Diao Z, Zhou Y, Lan T, Guan H, Pan R, Xue Y, Wu W. Dwarf and deformed flower 1, encoding an F-box protein, is critical for vegetative and floral development in rice (Oryza sativa L.). Plant J 2012; 72:829-42. [PMID: 22897567 DOI: 10.1111/j.1365-313x.2012.05126.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Recent studies have shown that F-box proteins constitute a large family in eukaryotes, and play pivotal roles in regulating various developmental processes in plants. However, their functions in monocots are still obscure. In this study, we characterized a recessive mutant dwarf and deformed flower 1-1 (ddf1-1) in Oryza sativa (rice). The mutant is abnormal in both vegetative and reproductive development, with significant size reduction in all organs except the spikelet. DDF1 controls organ size by regulating both cell division and cell expansion. In the ddf1-1 spikelet, the specification of floral organs in whorls 2 and 3 is altered, with most lodicules and stamens being transformed into glume-like organs and pistil-like organs, respectively, but the specification of lemma/palea and pistil in whorls 1 and 4 is not affected. DDF1 encodes an F-box protein anchored in the nucleolus, and is expressed in almost all vegetative and reproductive tissues. Consistent with the mutant floral phenotype, DDF1 positively regulates B-class genes OsMADS4 and OsMADS16, and negatively regulates pistil specification gene DL. In addition, DDF1 also negatively regulates the Arabidopsis LFY ortholog APO2, implying a functional connection between DDF1 and APO2. Collectively, these results revealed that DDF1, as a newly identified F-box gene, is a crucial genetic factor with pleiotropic functions for both vegetative growth and floral organ specification in rice. These findings provide additional insights into the molecular mechanism controlling monocot vegetative and reproductive development.
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Affiliation(s)
- Yuanlin Duan
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, Fujian Agriculture & Forestry University, Fuzhou 350002, China.
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Wang SF, Cai Y, Qin YX, Zhou YC, Su YQ, Wang J. Characterization of yellow grouper Epinephelus awoara (Serranidae) karyotype by chromosome bandings and fluorescence in situ hybridization. J Fish Biol 2012; 80:866-875. [PMID: 22471805 DOI: 10.1111/j.1095-8649.2012.03230.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The cytogenetics of yellow grouper Epinephelus awoara was studied using multiple cytogenetic markers [Giemsa staining, C-banding, Ag-NORs and fluorescence in situ hybridization (FISH)]. Giemsa staining results showed that the karyotypic formula of E. awoara was 2n = 48a, FN (fundamental number) = 48. Faint C-bandings were only detected at the centromeric regions of chromosome pair number 24, being almost indiscernible on the other chromosome pairs. After Ag-NOR staining, one pair of nucleolar organizer regions (NOR) was observed in the subcentromeric region of pair number 24. FISH results showed that 5S rDNA was located at a pair of medium-sized chromosomes, while 18S rDNA appeared at the same location in the subcentromeric region of pair number 24 where Ag-NORs were detected. The telomeric sequence (TTAGGG)(n) detected by FISH was located at both ends of each chromosome. The results suggested that E. awoara has retained general karyotypic structure stability during the evolutionary diversification process.
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Affiliation(s)
- S F Wang
- Key Laboratory of Tropical Biological Resources of Ministry of Education, Hainan University, Haikou 570228, China
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Shi YC, Cui YX, Zhou YC, Wei L, Jiang HT, Xia XY, Lu HY, Wang HY, Shang XJ, Zhu WM, Li XJ, Huang YF. A rare Y chromosome constitutional rearrangement: a partial AZFb deletion and duplication within chromosome Yp in an infertile man with severe oligoasthenoteratozoospermia. ACTA ACUST UNITED AC 2012; 34:461-9. [PMID: 21950337 DOI: 10.1111/j.1365-2605.2010.01098.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We report a case of an infertile man with severe oligoasthenoteratozoospermia with a partial azoospermia factor b (AZFb) deletion and duplication region within chromosome Yp11.2. The hormonal profile was normal for serum concentrations of follicle-stimulating hormone, luteinizing hormone, testosterone and oestradiol. The patient, who showed a 46,XY karyotype, had an approximate 2.4 Mb inherited duplication region in Yp11.2 and a de novo partial AZFb deletion, which spanned 5.25 Mb including eight protein coding genes and four non-coding transcripts, but did not remove the RBMY gene family. Both proximal and distal breakpoints of the deletion were outside any palindromic region or inverted repeat sequence and intra-chromosomal non-allelic homologous recombination could not have been the deletion mechanism. The partial AZFb deletion in our case diminished sperm production, but did not completely extinguish spermatogenesis. Considering severe oligozoospermia, spermatozoa in the patient's ejaculate were used for intracytoplasmic sperm injection, resulting in two twin pregnancies.
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Affiliation(s)
- Y C Shi
- Department of Reproduction and Genetics, Jinling Hospital, Nanjing University School of Medicine, Nanjing, China
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Lu B, Zhou YC. Poisson-Nernst-Planck equations for simulating biomolecular diffusion-reaction processes II: size effects on ionic distributions and diffusion-reaction rates. Biophys J 2011; 100:2475-85. [PMID: 21575582 DOI: 10.1016/j.bpj.2011.03.059] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2010] [Revised: 03/22/2011] [Accepted: 03/31/2011] [Indexed: 10/18/2022] Open
Abstract
The effects of finite particle size on electrostatics, density profiles, and diffusion have been a long existing topic in the study of ionic solution. The previous size-modified Poisson-Boltzmann and Poisson-Nernst-Planck models are revisited in this article. In contrast to many previous works that can only treat particle species with a single uniform size or two sizes, we generalize the Borukhov model to obtain a size-modified Poisson-Nernst-Planck (SMPNP) model that is able to treat nonuniform particle sizes. The numerical tractability of the model is demonstrated as well. The main contributions of this study are as follows. 1), We show that an (arbitrarily) size-modified PB model is indeed implied by the SMPNP equations under certain boundary/interface conditions, and can be reproduced through numerical solutions of the SMPNP. 2), The size effects in the SMPNP effectively reduce the densities of highly concentrated counterions around the biomolecule. 3), The SMPNP is applied to the diffusion-reaction process for the first time, to our knowledge. In the case of low substrate density near the enzyme reactive site, it is observed that the rate coefficients predicted by SMPNP model are considerably larger than those by the PNP model, suggesting both ions and substrates are subject to finite size effects. 4), An accurate finite element method and a convergent Gummel iteration are developed for the numerical solution of the completely coupled nonlinear system of SMPNP equations.
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Affiliation(s)
- Benzhuo Lu
- State Key Laboratory of Scientific and Engineering Computing, Institute of Computational Mathematics and Scientific/Engineering Computing, Academy of Mathematics and Systems Science, Chinese Academy of Sciences, Beijing, China.
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Duan Y, Li W, Wu W, Pan R, Zhou Y, Qi J, Lin L, Chen Z, Mao D, Liu H, Zhang D, Xue Y. Genetic analysis and mapping of gene fzp(t) controlling spikelet differentiation in rice. Sci China C Life Sci 2011; 46:328-34. [PMID: 18763148 DOI: 10.1360/03yc9035] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Received: 09/06/2002] [Indexed: 11/09/2022]
Abstract
A mutant of spikelet differentiation in rice called frizzle panicle (fzp) was discovered in the progeny of a cross between Oryza sativa ssp. indica cv. V20B and cv. Hua1B. The mutant exhibits normal plant morphology but has apparently fewer tillers. The most striking change in fzp is that its spikelet differentiation is completely blocked, with unlimited subsequent rachis branches generated from the positions where spikelets normally develop in wild-type plants. Genetic analysis suggests that fzp is controlled by a single recessive gene, which is temporarily named fzp(t). Based on its mutant phenotype, fzp(t) represents a key gene controlling spikelet differentiation. Some F(2) mutant plants derived from various genetic background appeared as the "middle type", suggesting that the action of fzp(t) is influenced by the presence of redundant, modifier or interactive genes. By using simple sequence repeat (SSR) markers and bulked segregant analysis (BSA) method, fzp(t) gene was mapped in the terminal region of the long arm of chromosome 7, with RM172 and RM248 on one side, 3.2 cM and 6.4 cM from fzp(t), and RM18 and RM234 on the other side, 23.1 cM and 26.3 cM from fzp(t), respectively. These results will facilitate the positional cloning and function studies of the gene.
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Affiliation(s)
- Yuanlin Duan
- College of Crops, Fujian Agricultural & Forestry University, 350002, Fuzhou, China
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Zhao RQ, Zhou YC, Ni YD, Lu LZ, Tao ZR, Chen WH, Chen J. Effect of daidzein on egg-laying performance in Shaoxing duck breeders during different stages of the egg production cycle. Br Poult Sci 2010; 46:175-81. [PMID: 15957437 DOI: 10.1080/00071660500064808] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
The effect of a phyto-oestrogen, daidzein, on the laying performance of Shaoxing female ducks was examined in three experiments performed at different stages of the egg production cycle. Egg-laying rate, egg weight, egg composition, feed conversion ratio, hatchability characteristics of eggs and body weight, ovary and oviduct weight, as well as changes in serum concentrations of T3, T4 and E2 were recorded as response criteria. In the first experiment, 68 young ducks, 100 d of age, were given a basal diet (maize-soybean meal) with or without 3 mg of daidzein/kg diet for 42 d. Daidzein did not affect the onset of lay but apparently decreased egg-laying rate and mean egg weight as well as the feed conversion ratio. In the second experiment, 240 breeding ducks, 402 d of age, were allotted at random to three groups and given the basal diet containing daidzein at 0 (control), 3 (Da1) and 5mg/kg (Da2) for 35d. Egg-laying rate, mean egg weight and feed conversion ratio increased in both Da1 and Da2 groups. However, an adverse effect of daidzein on fertility and hatchability was observed. In the third experiment, 320 breeding ducks, 415 d of age, were fed on the basal diet with or without 5mg of daidzein/kg diet for 63 d. Egg-laying rate increased by 7.7%, average egg weight tended to increase, whereas yolk/albumen ratio decreased. Daidzein-treated ducks had higher body weight and oviduct weight compared with their controls. Elevated plasma T4 and E2 concentrations accompanied these phenotypic changes, but serum T3 was not affected. It is suggested that daidzein exerts divergent effects on the egg-laying performance of Shaoxing ducks under different physiological conditions and this action is dose-dependent. The changes in circulating E2 imply possible participation of endogenous oestrogen in the mechanism of daidzein action.
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Affiliation(s)
- R Q Zhao
- Key Laboratory of Animal Physiology and Biochemistry, Nanjing Agricultural University, Nanjing, PR China.
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40
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Zhou YC, Lu B, Gorfe AA. Continuum electromechanical modeling of protein-membrane interactions. Phys Rev E Stat Nonlin Soft Matter Phys 2010; 82:041923. [PMID: 21230329 DOI: 10.1103/physreve.82.041923] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2010] [Indexed: 05/30/2023]
Abstract
A continuum electromechanical model is proposed to describe the membrane curvature induced by electrostatic interactions in a solvated protein-membrane system. The model couples the macroscopic strain energy of membrane and the electrostatic solvation energy of the system, and equilibrium membrane deformation is obtained by minimizing the electroelastic energy functional with respect to the dielectric interface. The model is illustrated with the systems with increasing geometry complexity and captures the sensitivity of membrane curvature to the permanent and mobile charge distributions.
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Affiliation(s)
- Y C Zhou
- Department of Mathematics, Colorado State University, Fort Collins, Colorado 80523, USA.
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41
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Wang JB, Li K, Zhong XL, Zhou YC, Fang XS, Tang CC, Bando Y. Considerable Enhancement of Field Emission of SnO(2) Nanowires by Post-Annealing Process in Oxygen at High Temperature. Nanoscale Res Lett 2009; 4:1135-1140. [PMID: 20596286 PMCID: PMC2894354 DOI: 10.1007/s11671-009-9367-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2009] [Accepted: 05/28/2009] [Indexed: 05/27/2023]
Abstract
The field emission properties of SnO(2) nanowires fabricated by chemical vapor deposition with metallic catalyst-assistance were investigated. For the as-fabricated SnO(2) nanowires, the turn-on and threshold field were 4.03 and 5.4 V/mum, respectively. Considerable enhancement of field emission of SnO(2) nanowires was obtained by a post-annealing process in oxygen at high temperature. When the SnO(2) nanowires were post-annealed at 1,000 degrees C in oxygen, the turn-on and threshold field were decreased to 3.77 and 4.4 V/mum, respectively, and the current density was increased to 6.58 from 0.3 mA/cm(2) at the same applied electric field of 5.0 V/mum.
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Affiliation(s)
- JB Wang
- Institute of Modern Physics, Xiangtan University, 411105, Xiangtan, Hunan, China
- Key Laboratory of Low Dimensional Materials and Application Technology of Ministry of Education, Xiangtan University, 411105, Xiangtan, Hunan, China
| | - K Li
- Institute of Modern Physics, Xiangtan University, 411105, Xiangtan, Hunan, China
- Key Laboratory of Low Dimensional Materials and Application Technology of Ministry of Education, Xiangtan University, 411105, Xiangtan, Hunan, China
| | - XL Zhong
- Institute of Modern Physics, Xiangtan University, 411105, Xiangtan, Hunan, China
- Key Laboratory of Low Dimensional Materials and Application Technology of Ministry of Education, Xiangtan University, 411105, Xiangtan, Hunan, China
| | - YC Zhou
- Institute of Modern Physics, Xiangtan University, 411105, Xiangtan, Hunan, China
- Key Laboratory of Low Dimensional Materials and Application Technology of Ministry of Education, Xiangtan University, 411105, Xiangtan, Hunan, China
| | - XS Fang
- Nanoscale Materials Center, National Institute for Materials Science, Tsukuba, 3050047, Japan
| | - CC Tang
- Nanoscale Materials Center, National Institute for Materials Science, Tsukuba, 3050047, Japan
| | - Y Bando
- Nanoscale Materials Center, National Institute for Materials Science, Tsukuba, 3050047, Japan
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Qin J, Guo X, Cui GH, Zhou YC, Zhou DR, Tang AF, Yu ZD, Gui YT, Cai ZM. Cluster characterization of mouse embryonic stem cell-derived pluripotent embryoid bodies in four distinct developmental stages. Biologicals 2009; 37:235-44. [PMID: 19339198 DOI: 10.1016/j.biologicals.2009.03.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2008] [Revised: 03/04/2009] [Accepted: 03/04/2009] [Indexed: 10/20/2022] Open
Abstract
The formation of embryoid bodies (EBs) is the principal step in the differentiation of embryonic stem (ES) cells. In this study, the morphological characteristics and gene expression patterns of EBs related to the sequential stages of embryonic development were well defined in four distinct developmental groups over 112 days of culture: early-stage EBs groups (1-7 days of differentiation), mid-stage EBs groups (9-15 days of differentiation), maturing EBs groups (17-45 days of differentiation) and matured EBs groups (50 days of differentiation). We first determined definite histological location of apoptosis within EBs and the sequential expression of molecular markers representing stem cells (Oct4, SSEA-1, Sox-2 and AKP), germ cells (Fragilis, Dazl, c-kit, StellaR, Mvh and Stra8), ectoderm (Neurod, Nestin and Neurofilament), mesoderm (Gata-1, Flk-1 and Hbb) and endoderm (AFP and Transthyretin). Our results revealed that developing EBs possess either pluripotent stem cell or germ cell states and that three-dimensional aggregates of EBs initiate mES cell differentiation during prolonged culture in vitro. Therefore, we suggest that this EB system to some extent recapitulates the early developmental processes occurring in vivo.
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Affiliation(s)
- J Qin
- Key Laboratory of Male Reproduction & Genetics of Guangdong Province, Peking University, Shenzhen Hospital, Lianhua Road 1120, FuTian District, Shenzhen 518036, PR China
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43
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Zhou YC, Holst M, McCammon JA. A Nonlinear Elasticity Model of Macromolecular Conformational Change Induced by Electrostatic Forces. J Math Anal Appl 2008; 340:135-164. [PMID: 19461946 PMCID: PMC2423821 DOI: 10.1016/j.jmaa.2007.07.084] [Citation(s) in RCA: 6] [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] [Indexed: 05/27/2023]
Abstract
In this paper we propose a nonlinear elasticity model of macromolecular conformational change (deformation) induced by electrostatic forces generated by an implicit solvation model. The Poisson-Boltzmann equation for the electrostatic potential is analyzed in a domain varying with the elastic deformation of molecules, and a new continuous model of the electrostatic forces is developed to ensure solvability of the nonlinear elasticity equations. We derive the estimates of electrostatic forces corresponding to four types of perturbations to an electrostatic potential field, and establish the existance of an equilibrium configuration using a fixed-point argument, under the assumption that the change in the ionic strength and charges due to the additional molecules causing the deformation are sufficiently small. The results are valid for elastic models with arbitrarily complex dielectric interfaces and cavities, and can be generalized to large elastic deformation caused by high ionic strength, large charges, and strong external fields by using continuation methods.
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Affiliation(s)
- Y C Zhou
- Department of Mathematics University of California, San Diego, La Jolla, CA 92093
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44
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Zhou YC, Lu B, Huber GA, Holst MJ, McCammon JA. Continuum simulations of acetylcholine consumption by acetylcholinesterase: a Poisson-Nernst-Planck approach. J Phys Chem B 2007; 112:270-5. [PMID: 18052268 DOI: 10.1021/jp074900e] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The Poisson-Nernst-Planck (PNP) equation provides a continuum description of electrostatic-driven diffusion and is used here to model the diffusion and reaction of acetylcholine (ACh) with acetylcholinesterase (AChE) enzymes. This study focuses on the effects of ion and substrate concentrations on the reaction rate and rate coefficient. To this end, the PNP equations are numerically solved with a hybrid finite element and boundary element method at a wide range of ion and substrate concentrations, and the results are compared with the partially coupled Smoluchowski-Poisson-Boltzmann model. The reaction rate is found to depend strongly on the concentrations of both the substrate and ions; this is explained by the competition between the intersubstrate repulsion and the ionic screening effects. The reaction rate coefficient is independent of the substrate concentration only at very high ion concentrations, whereas at low ion concentrations the behavior of the rate depends strongly on the substrate concentration. Moreover, at physiological ion concentrations, variations in substrate concentration significantly affect the transient behavior of the reaction. Our results offer a reliable estimate of reaction rates at various conditions and imply that the concentrations of charged substrates must be coupled with the electrostatic computation to provide a more realistic description of neurotransmission and other electrodiffusion and reaction processes.
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Affiliation(s)
- Y C Zhou
- Department of Mathematics, Center for Theoretical Biological Physics, Howard Hughes Medical Institute, Department of Chemistry and Biochemistry, and Department of Pharmacology, University of California at San Diego, La Jolla, California 92093-0365, USA
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Lu B, Zhou YC, Huber GA, Bond SD, Holst MJ, McCammon JA. Electrodiffusion: a continuum modeling framework for biomolecular systems with realistic spatiotemporal resolution. J Chem Phys 2007; 127:135102. [PMID: 17919055 DOI: 10.1063/1.2775933] [Citation(s) in RCA: 65] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
A computational framework is presented for the continuum modeling of cellular biomolecular diffusion influenced by electrostatic driving forces. This framework is developed from a combination of state-of-the-art numerical methods, geometric meshing, and computer visualization tools. In particular, a hybrid of (adaptive) finite element and boundary element methods is adopted to solve the Smoluchowski equation (SE), the Poisson equation (PE), and the Poisson-Nernst-Planck equation (PNPE) in order to describe electrodiffusion processes. The finite element method is used because of its flexibility in modeling irregular geometries and complex boundary conditions. The boundary element method is used due to the convenience of treating the singularities in the source charge distribution and its accurate solution to electrostatic problems on molecular boundaries. Nonsteady-state diffusion can be studied using this framework, with the electric field computed using the densities of charged small molecules and mobile ions in the solvent. A solution for mesh generation for biomolecular systems is supplied, which is an essential component for the finite element and boundary element computations. The uncoupled Smoluchowski equation and Poisson-Boltzmann equation are considered as special cases of the PNPE in the numerical algorithm, and therefore can be solved in this framework as well. Two types of computations are reported in the results: stationary PNPE and time-dependent SE or Nernst-Planck equations solutions. A biological application of the first type is the ionic density distribution around a fragment of DNA determined by the equilibrium PNPE. The stationary PNPE with nonzero flux is also studied for a simple model system, and leads to an observation that the interference on electrostatic field of the substrate charges strongly affects the reaction rate coefficient. The second is a time-dependent diffusion process: the consumption of the neurotransmitter acetylcholine by acetylcholinesterase, determined by the SE and a single uncoupled solution of the Poisson-Boltzmann equation. The electrostatic effects, counterion compensation, spatiotemporal distribution, and diffusion-controlled reaction kinetics are analyzed and different methods are compared.
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Affiliation(s)
- Benzhuo Lu
- Howard Hughes Medical Institute, University of California at San Diego, La Jolla, California 92093-0365, USA.
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Abstract
Implicit solvent models based on the Poisson-Boltzmann (PB) equation are frequently used to describe the interactions of a biomolecule with its dielectric continuum environment. A novel, highly accurate Poisson-Boltzmann solver is developed based on the matched interface and boundary (MIB) method, which rigorously enforces the continuity conditions of both the electrostatic potential and its flux at the molecular surface. The MIB based PB solver attains much better convergence rates as a function of mesh size compared to conventional finite difference and finite element based PB solvers. Consequently, highly accurate electrostatic potentials and solvation energies are obtained at coarse mesh sizes. In the context of biomolecular electrostatic calculations it is demonstrated that the MIB method generates substantially more accurate solutions of the PB equation than other established methods, thus providing a new level of reference values for such models. Initial results also indicate that the MIB method can significantly improve the quality of electrostatic surface potentials of biomolecules that are frequently used in the study of biomolecular interactions based on experimental structures.
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Affiliation(s)
- Y C Zhou
- Department of Mathematics, Michigan State University, East Lansing, MI 48824, USA
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47
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Zhu JG, Lin JJ, Wan HB, Yuan CX, Li M, Zhao FK, Zhou YC, Wu XF, Cai YM. [Studies on the sex difference in proteins between male and female adult worm of Schistosoma japonicum]. Zhongguo Ji Sheng Chong Xue Yu Ji Sheng Chong Bing Za Zhi 2003; 19:107-9. [PMID: 12571999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/28/2023]
Abstract
OBJECTIVE To explore the sex difference in proteins between male and female adult worm of Schistosoma japonicum. METHODS Two-electrophoresis was used to analyse the difference of protein between the male and female adult worm of S. japonicum (Chinese strain). RESULTS Two-dimensional electrophoresis analysis revealed that at the site of 43 kDa and an isoelectric point (pI) of 5.60-5.90 the male worm exhibited a band carrying a number of spots and dots, being longer and wider than that exhibited by the female worm. The female worm exhibited 7 specific dots. CONCLUSION The sex differences in proteins between male and female adult worms of S. japonicum are significant.
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Affiliation(s)
- J G Zhu
- Shanghai Institute of Animal Parasitology, Chinese Academy of Agricultural Science, Key Laboratory of Animal Parasitology, Ministry of Agriculture of China, Shanghai 200232
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Liu JW, Chai MQ, Du XY, Song JG, Zhou YC. [Purification and characterization of L-amino acid oxidase from Agkistrodon halys pallas venom]. Sheng Wu Hua Xue Yu Sheng Wu Wu Li Xue Bao (Shanghai) 2002; 34:305-10. [PMID: 12019442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
Abstract
L-amino acid oxidase (LAO, EC 1.4.3.2) is widely found in snake venoms and is thought to contribute to the toxicity in envenoming. By using of Sephadex G-150, DEAE-Sepharose CL-6B and FPLC Superose 12 chromatography, a protein with L-amino acid oxidase activity was purified and characterized from Agkistrodon haly Pallas venom. Its molecular mass was 57 kD as determined by SDS-PAGE analysis under both reducing and non-reducing conditions, and its pI was about 4.9. The protein catalysed the stereospecific oxidative deamination of L-amino acid substrate. It inhibited the platelet aggregation induced by ADP and collagen dose-dependently, even at low concentrations of 0.2 micromol/L and 0.08 micromol/L, respectively. The LAO had antibacterial effect to E.coli K12D31, and the effective concentration was as low as 0.03 g/L. Furthermore, the LAO showed cytotoxicity in crystal violet assay and apoptosis-inducing activity in the A549 cells. After 24h treatment with 5 mg/L LAO, the typical DNA fragmentation pattern of apoptotic cells was observed by using of agrose gel electrophoresis.
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Affiliation(s)
- J W Liu
- Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, the Chinese Academy of Sciences, Shanghai 200031, China
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49
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Gu LC, Zhang HL, Song SY, Zhou YC, Lin ZJ. Structure of an acidic phospholipase A(2) from the venom of Deinagkistrodon acutus in a new crystal form. Sheng Wu Hua Xue Yu Sheng Wu Wu Li Xue Bao (Shanghai) 2002; 34:266-72. [PMID: 12019436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
Abstract
The three-dimensional structure of an acidic phospholipase A(2) purified from the venom of Deinagkistrodon acutus (Agkistrodon acutus) was determined in a new crystal form by molecular replacement at 0.28 nm resolution with a crystallographic R factor of 21.9% (R-free=25.7%) and reasonable stereochemistry. Being similar to the previous reported crystal form, a significant conformational adaptation of segment 14-23 at the dimer interface was observed. This segment was related to the "interface recognition site" (IRS). It was found that a positively charged residue at position 34 seems to be a common feature for most of hemolytic PLA(2)s belonging to group II. Structural comparison between the two crystal forms showed that NaCl had significant effects on the crystal packing, thus leading to dramatic changes of the unit cell parameters. In the new crystal form, MPD (2-methyl-2, 4-pentanediol) molecules exist in the hydrophobic channel of the enzyme.
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Affiliation(s)
- L C Gu
- National Laboratory of Biomacromolecules, Institute of Biophysics, the Chinese Academy of Sciences, Beijing 100101, China.
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50
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Jin YM, Lin JJ, Feng XG, Zhang L, Wu XF, Zhou YC, Cai YM. [Cloning and expression of gynecophoral canal protein gene of Schistosoma japonicum (Chinese strain)]. Sheng Wu Hua Xue Yu Sheng Wu Wu Li Xue Bao (Shanghai) 2002; 34:311-7. [PMID: 12019443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
Abstract
A 1949 bp cDNA fragment was amplified by RT-PCR from adult Schistosoma japonicum (Chinese strain) mRNA with 3 pair of primers that were designed according to published SmGCP gene encoding gynecophoral canal protein of Schistosoma mansoni and SjGCP1 gene encoding the conservative region of gynecophoral canal protein of Schistosoma japonicum. Sequence analysis indicated that this fragment, named SjGCP, with 85% identity to SmGCP, contained a complete open reading frame (ORF) of gynecophoral canal protein gene of Schistosoma japonicum (Chinese strain). The amino acid sequence shared 83.7% identity with gynecophoral canal protein of Schistosoma mansoni. This fragment was cloned into the expression vector pET28c(+) and subsequently expressed in Escherichia coli. SDS-PAGE revealed that the molecular weight of this expressed product was 80 kD. Western blotting showed that the recombinant protein reacted well with the rabbit serum immunized with Sj worm antigen, indicating that this expressed product had good antigenicity.
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Affiliation(s)
- Y M Jin
- Shanghai Institute of Animal Parasitology, Chinese Academy of Agricultural Science, Key Laboratory of Animal Parasitology, Ministry of Agriculture of China, Shanghai 200232, China
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