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Wu W, Liu R, Guo J, Hu Z, An C, Zhang Y, Liu T, Cen L, Pan Y. Modulation of immunosuppressive effect of rapamycin via microfluidic encapsulation within PEG-PLGA nanoparticles. J Biomater Appl 2024; 38:821-833. [PMID: 38145897 DOI: 10.1177/08853282231223808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2023]
Abstract
The high hydrophobicity and low oral availability of immunosuppressive drug, rapamycin, seriously limit its application. It was thus aimed to develop a PEG-PLGA based nano-loading system for rapamycin delivery to achieve improved bioavailability with sustained effects via a novel microfluidic chip and manipulation of the hydrophobic PLGA chain length. PDMS based microfluidic chip with Y shape was designed and PEG-PLGA polymers with different PLGA chain length were used to prepare rapamycin nano-delivery systems. Dendritic cells were selected to evaluate the immunosuppressive effect of the nanoparticles including cytotoxicity assay, dendritic cell activation, and cytokine levels. The effects of different PEG-PLGA nanoparticles on the immunomodulatory properties were finally compared. It was shown that PEG-PLGA could be successfully used for rapamycin encapsulation via microfluidics to obtain nano-delivery systems (Rapa&P-20 k, Rapa&P-50 k and Rapa&P-95 k) ranging from 100 nm to 116 nm. The encapsulation efficiency was ranged from 69.70% to 84.55% and drug loading from 10.45% to 12.68%. The Rapa&P-50 k (PLGA chain length: 50 k) could achieve the highest drug loading (DL) and encapsulation efficiency (EE) as 12.68% and 84.55%. The encapsulated rapamycin could be gradually released from three nanoparticles for more than 1 month without any noticeable burst release. The Rapa & P nanoparticles exhibited enhanced immunosuppressive effects over those of free rapamycin as shown by the expression of CD40 and CD80, and the secretion of IL-1β, IL-12 and TGF-β1. Rapa&P-50 k nanoparticles could be the optimal choice for rapamycin delivery as it also achieved the most effective immunosuppressive property. Hence, this study could provide an efficient technology with superior manipulation to offer a solution for rapamycin delivery and clinical application.
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Affiliation(s)
- Weiqian Wu
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, Department of Product Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai, China
| | - Ruilai Liu
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, Department of Product Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai, China
| | - Jiahao Guo
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, Department of Product Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai, China
| | - Zhihuan Hu
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, Department of Product Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai, China
| | - Chenjing An
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, Department of Product Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai, China
| | - Yan Zhang
- Barbell Therapeutics Co. Ltd, Shanghai, China
| | | | - Lian Cen
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, Department of Product Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai, China
| | - Yukun Pan
- Barbell Therapeutics Co. Ltd, Shanghai, China
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Wusiman D, Guo L, Li L, Zhang X, Zhao X, An Z, Huang Z, Zhang Y, Li Z, Ying J, Wei M, Li W, An C. Clinicopathological and prognostic significance of PD-L1 and TIM-3 expression in medullary thyroid carcinoma: a retrospective immunohistochemistry study. J Endocrinol Invest 2024; 47:91-100. [PMID: 37464189 PMCID: PMC10776706 DOI: 10.1007/s40618-023-02126-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Accepted: 05/30/2023] [Indexed: 07/20/2023]
Abstract
PURPOSE Expression of the programmed death-ligand 1 (PD-L1) and T-cell immunoglobulin and mucin-domain containing-3 (TIM-3) in medullary thyroid carcinoma (MTC) has been controversial and rarely reported. METHODS Surgical specimens of 190 MTC patients who had initial curative-intent surgery were collected. Immunohistochemistry of PD-L1 and TIM-3 was performed using 22C3 pharmDx (Dako, Carpinteria, CA) and anti-TIM-3 (1:500, ab241332, Abcam). Stained slides were scored using a combined positive score (CPS) with a cutoff of ≥ 1. We established correlations between PD-L1 expression, TIM-3 expression, clinicopathological, and survival data. RESULTS 13 cases (13/190, 6.84%) were positive for PD-L1 expression, and 42 cases (42/154, 27.27%) for TIM-3 expression. PD-L1 expression was correlated to TIM-3 expression (P = 0.002), but was not related to overall survival (OS) or progression-free survival (PFS). TIM-3 expression was correlated to perineural invasion (P = 0.040). Multivariate Cox analysis showed that lymphovascular invasion (LVI) was independently associated with OS. And tumor size, LVI, and lymph node metastases were significantly associated with PFS. Furthermore, the multivariate logistic analysis showed multifocal status, LVI, pathological T stage and lymph node metastasis were independent risk factors for biochemical recurrence/persistent disease. CONCLUSIONS We demonstrated that PD-L1 and TIM-3 expression were not frequent in MTC and were not associated with survival prognosis. Our results should be considered when clinical trials of PD-L1 or TIM-3 blockades are implemented.
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Affiliation(s)
- D Wusiman
- Department of Head and Neck Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, 100021, Beijing, China
| | - L Guo
- Department of Pathology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, 100021, Beijing, China
| | - L Li
- Department of Pathology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, 100021, Beijing, China
| | - X Zhang
- Department of Head and Neck Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, 100021, Beijing, China
| | - X Zhao
- Department of Head and Neck Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, 100021, Beijing, China
| | - Z An
- Department of Head and Neck Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, 100021, Beijing, China
| | - Z Huang
- Department of Head and Neck Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, 100021, Beijing, China
| | - Y Zhang
- Department of Pathology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, 100021, Beijing, China
| | - Z Li
- Department of Head and Neck Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, 100021, Beijing, China
| | - J Ying
- Department of Pathology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, 100021, Beijing, China
| | - M Wei
- Department of Head and Neck Surgical Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Shenzhen Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, 518116, Shenzhen, China.
| | - W Li
- Department of Pathology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, 100021, Beijing, China.
| | - C An
- Department of Head and Neck Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, 100021, Beijing, China.
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Xue FM, Liu C, Lei Z, An C. [A case of haploinsufficiency of A20 caused by new variation of TNFAIP3 gene]. Zhonghua Er Ke Za Zhi 2023; 61:740-742. [PMID: 37528019 DOI: 10.3760/cma.j.cn112140-20230202-00072] [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: 08/03/2023]
Affiliation(s)
- F M Xue
- Department of Gastroenterology, Children's Hospital Affiliated to Zhengzhou University,Zhenzhou 450018, China
| | - C Liu
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - Z Lei
- Henan Key Laboratory of Children's Genetics and Metabolic Diseases, Children's Hospital Affiliated to Zhengzhou University,Zhenzhou 450018, China
| | - C An
- Department of Clinical Laboratory, the Second Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, China
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Li S, Chen Y, Xue W, Wang Q, Huai Z, An C, Wang Y. Proteomics profiles reveal the potential roles of proteins involved in chicken macrophages stimulated by Lipopolysaccharide. Pol J Vet Sci 2023; 26:265-274. [PMID: 37389436 DOI: 10.24425/pjvs.2023.145032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/01/2023]
Abstract
Lipopolysaccharide (LPS), a core part of gram-negative bacteria, is crucial for inducing an inflammatory response in living things. In the current study, we used LPS from Salmonella to stimulate chicken macrophages (HD11). Proteomics was used to investigate immune-related proteins and their roles further. Proteomics investigation revealed 31 differential expression proteins (DEPs) after 4 hours of LPS infection. 24 DEPs expressions were up-regulated, while seven were down-regulated. In this investigation, ten DEPs were mainly enriched in S. aureus infection, complement, and coagulation cascades, which were all implicated in the inflammatory response and clearance of foreign pathogens. Notably, complement C3 was shown to be up-regulated in all immune-related pathways, indicating that it is a potential protein in this study. This work contributes to a better understanding and clarification of the processes of Salmonella infection in chickens. It might bring up new possibilities for treating and breeding Salmonella-infected chickens.
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Affiliation(s)
- S Li
- School of Life Science, Bengbu Medical College, Donghai street No.2600, Bengbu, Anhui, China
| | - Y Chen
- School of Life Science, Bengbu Medical College, Donghai street No.2600, Bengbu, Anhui, China
| | - W Xue
- School of Life Science, Bengbu Medical College, Donghai street No.2600, Bengbu, Anhui, China
| | - Q Wang
- School of Life Science, Bengbu Medical College, Donghai street No.2600, Bengbu, Anhui, China
| | - Z Huai
- School of Life Science, Bengbu Medical College, Donghai street No.2600, Bengbu, Anhui, China
| | - C An
- School of Life Science, Bengbu Medical College, Donghai street No.2600, Bengbu, Anhui, China
| | - Y Wang
- School of Life Science, Bengbu Medical College, Donghai street No.2600, Bengbu, Anhui, China
- Anhui Province Key Laboratory of Translational Cancer Research, Donghai street No.2600, Bengbu Medical College, Bengbu, China
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An C, Ma W, He RF, Wu T, Shi JN, Sun TT, Piao WH. Hepatitis C virus genotype diversity in Ningxia Hui autonomous region, Northwestern China. BRAZ J BIOL 2023; 83:e267641. [PMID: 37255197 DOI: 10.1590/1519-6984.267641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Accepted: 03/21/2023] [Indexed: 06/01/2023] Open
Abstract
Hepatitis C virus (HCV) genotypes vary greatly in different regions. The aim of this study is to investigate the distribution of HCV genotypes in HCV infected patients, in Ningxia Hui Autonomous Region. Nucleic acid extraction and amplification were performed with test kits on 153 HCV infected patients serum samples. The HCV viral load was measured using reverse transcriptase PCR (RT-PCR) and HCV genotypes were determined. Among the 153 HCV-infected patients, 56 had genotype (GT)1b (36.60%), 45 had GT2a (29.40%), 23 had GT3a (15.00%), 14 had GT3b (9.20%),13 had GT6a (8.50%), 1 had GT1g (0.70%), 1 had GT6xa (0.70%). In GT1b, 21.40% were female and 78.60% were male; in GT2a, 42.20% were female and 57.80% were male;Males were most prevalent in genotypes 1b(39.30%), while female were most prevalent in genotype 2a(46.30%). Rare GT1g and GT6xa were also detected in males. The 41-50 year age group had the highest HCV prevalence of 32.00%. HCV GT1b is the predominant HCV genotype in Ningxia Hui Autonomous Region.
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Affiliation(s)
- C An
- People's Hospital of Ningxia Hui Autonomous Region, Department of Laboratory Medicine, Yinchuan, Ningxia, China
| | - W Ma
- People's Hospital of Ningxia Hui Autonomous Region, Department of Laboratory Medicine, Yinchuan, Ningxia, China
| | - R F He
- People's Hospital of Ningxia Hui Autonomous Region, Department of Laboratory Medicine, Yinchuan, Ningxia, China
| | - T Wu
- People's Hospital of Ningxia Hui Autonomous Region, Department of Laboratory Medicine, Yinchuan, Ningxia, China
| | - J N Shi
- Ningxia Medical Uniwersity, College of Clincal Medicine, Yinchuan, Ningxia, China
| | - T T Sun
- Ningxia Medical Uniwersity, College of Clincal Medicine, Yinchuan, Ningxia, China
| | - W H Piao
- People's Hospital of Ningxia Hui Autonomous Region, Department of Laboratory Medicine, Yinchuan, Ningxia, China
- Ningxia Medical Uniwersity, College of Clincal Medicine, Yinchuan, Ningxia, China
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An C, Chen Y, Wu Y, Hu Z, Zhang H, Liu R, Zhou Y, Cen L. Manipulation of porous poly(l-lactide-co-ε-caprolactone) microcarriers via microfluidics for C2C12 expansion. Int J Biol Macromol 2023; 242:124625. [PMID: 37146858 DOI: 10.1016/j.ijbiomac.2023.124625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 04/14/2023] [Accepted: 04/23/2023] [Indexed: 05/07/2023]
Abstract
The growth and repair of skeletal muscle are due in part to activation of muscle precursor cells, commonly known as satellite cells or myoblasts. In order to acquire enough cells for neoskeletal muscle regeneration, it is urgent to develop microcarriers for skeletal myoblasts proliferation with a considerable efficiency. The current study was thus proposed to develop a microfluidic technology to manufacture porous poly(l-lactide-co-ε-caprolactone) (PLCL) microcarriers of high uniformity, and porosity was manipulated via camphene to suit the proliferation of C2C12 cells. A co-flow capillary microfluidic device was first designed to obtain PLCL microcarriers with different porosity. The attachment and proliferation of C2C12 cells on these microcarriers were evaluated and the differentiation potential of expanded cells were verified. The obtained porous microcarriers were all uniform in size with a high mono-dispersity (CV < 5 %). The content of camphene rendered effects on the size, porosity, and pore size of microcarriers, and porous structure addition produced a softening of their mechanical properties. The one of 10 % camphene (PM-10) exhibited the superior expansion for C2C12 cells with the number of cells after 5 days of culture reached 9.53 times of the adherent cells on the first day. The expanded cells from PM-10 still retained excellent myogenic differentiation performance as the expressions of MYOD, Desmin and MYH2 were intensively enhanced. Hence, the current developed porous PLCL microcarriers could offer as a promising type of substrates not only for in vitro muscular precursor cells expansion without compromising any multipotency but also have the potential as injectable constructs to mediate muscle regeneration.
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Affiliation(s)
- Chenjing An
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, Department of Product Engineering, School of Chemical Engineering, East China University of Science and Technology. No.130 Mei Long Road, Shanghai 200237, China
| | - Yawen Chen
- State Key Laboratory of Bioreactor Engineering, School of Bioengineering, East China University of Science and Technology. No.130 Mei Long Road, Shanghai 200237, China
| | - Yanfei Wu
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, Department of Product Engineering, School of Chemical Engineering, East China University of Science and Technology. No.130 Mei Long Road, Shanghai 200237, China
| | - Zhihuan Hu
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, Department of Product Engineering, School of Chemical Engineering, East China University of Science and Technology. No.130 Mei Long Road, Shanghai 200237, China
| | - Huan Zhang
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, Department of Product Engineering, School of Chemical Engineering, East China University of Science and Technology. No.130 Mei Long Road, Shanghai 200237, China
| | - Ruilai Liu
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, Department of Product Engineering, School of Chemical Engineering, East China University of Science and Technology. No.130 Mei Long Road, Shanghai 200237, China
| | - Yan Zhou
- State Key Laboratory of Bioreactor Engineering, School of Bioengineering, East China University of Science and Technology. No.130 Mei Long Road, Shanghai 200237, China.
| | - Lian Cen
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, Department of Product Engineering, School of Chemical Engineering, East China University of Science and Technology. No.130 Mei Long Road, Shanghai 200237, China.
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Edwards MK, An C, Rohrbaugh R, Peluso MJ, Lam SK. A web-based review of global health programs in U.S. allopathic and osteopathic medical schools. Med Teach 2022; 44:1408-1412. [PMID: 35868013 DOI: 10.1080/0142159x.2022.2099258] [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] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
PURPOSE There is no current centralized database of structured global health programs at U.S. medical schools and no published review in the past decade. This study aims to describe the prevalence, characteristics, and requirements of non-degree, longitudinal, structured global health programs in U.S. allopathic and osteopathic medical schools. MATERIALS AND METHODS In July 2021, the authors performed a web-based review of existing structured global health programs for the 154 U.S. allopathic medical schools and 35 U.S. osteopathic medical schools established prior to 2019. RESULTS Of 189 institutions examined, 74 (39%) had online information about a structured global health program. Forty-three (53%) programs reported coursework requirements, 44 (54%) required a global health experience, and one program required demonstration of language or cultural knowledge. More internally administered programs required experiential work, while more externally administered programs required didactic work. There were few differences in program requirements between allopathic and osteopathic medical schools. CONCLUSIONS There has been a 75% increase over the past ten years in the number of U.S. allopathic medical schools with websites for structured global health programs. There appeared to be little standardization in their structure and requirements. The findings support the need for a web-based central repository for updated information regarding medical school global health curricula.
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Affiliation(s)
- M K Edwards
- Case Western Reserve University School of Medicine, Cleveland, OH, USA
| | - C An
- Case Western Reserve University School of Medicine, Cleveland, OH, USA
| | - R Rohrbaugh
- Department of Psychiatry, Yale School of Medicine, New Haven, CT, USA
| | - M J Peluso
- Department of Medicine, University of California San Francisco School of Medicine, San Francisco, CA, USA
| | - S K Lam
- Case Western Reserve University School of Medicine, Cleveland, OH, USA
- Department of Pediatric Hospital Medicine, Cleveland Clinic Lerner College of Medicine, Cleveland, OH, USA
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Shin S, Kwon HJ, Kim H, Min N, Lim Y, Joo T, Lee K, Jeong MS, Kim H, Um SW, An C, Lee S. 23P MRE-seq based cancer screening for lung and colorectal cancer by deep learning analysis of cfDNA methylation pattern cancer screening. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.050] [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: 11/01/2022] Open
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Wu Y, Zheng Y, Jin Z, Li S, Wu W, An C, Guo J, Zhu Z, Zhou T, Zhou Y, Cen L. Controllable manipulation of alginate-gelatin core-shell microcarriers for HUMSCs expansion. Int J Biol Macromol 2022; 216:1-13. [PMID: 35777503 DOI: 10.1016/j.ijbiomac.2022.06.173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 06/20/2022] [Accepted: 06/26/2022] [Indexed: 11/29/2022]
Abstract
Human umbilical cord mesenchymal stem cells (HUMSCs) are one of the most attractive sources of stem cells, and it is meaningful to design and develop a type of microcarriers with suitable mechanical strength for HUMSCs proliferation in order to acquire enough cells for cell-based therapy. Alginate-gelatin core-shell (AG) soft microcarriers were thus fabricated via a microfluidic device with droplet shearing/gelation facilities and surface coating for in vitro expansion of HUMSCs. The attachment and proliferation of HUMSCs on AG microcarriers with different mechanical strengths modulated by gelatin coating was studied, and the harvested cells were characterized to verity their differentiation potential. The obtained core-shell microcarriers were all uniform in size with a high mono-dispersity (CV < 5 %). An increase in the gelatin surface coating concentration from 0.5 % to 1.5 % would lead to the reduction in both the particle size of the microcarriers and swelling ratio upon the contact of culture medium, but increased elastic modulus. Microcarriers of 245.12 μm with a gelatin coating elastic modulus of 27.5 kPa (AG10) were found to be the optimal substrate for HUMSCs with an initial attachment efficiency of 44.41 % and a 5-day expansion efficiency of 647 %. The cells harvested from AG10 still reserved their outstanding pluripotency. Fresh AG10 could smoothly transfer cells from a running microcarrier-cell system of confluence to serve as a convenient way of scaling-up the existing culture. The current study thus developed suitable microcarriers, AG10, for in vitro HUMSCs expansion with well reserve of cell multipotency, and also provided a manufacturing and surface manipulating strategy of precise production and fine regulation of microcarrier properties.
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Affiliation(s)
- Yanfei Wu
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, Department of Product Engineering, School of Chemical Engineering, East China University of Science and Technology, No.130 Mei Long Road, Shanghai 200237, China
| | - Yiling Zheng
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, Department of Product Engineering, School of Chemical Engineering, East China University of Science and Technology, No.130 Mei Long Road, Shanghai 200237, China
| | - Ziyang Jin
- State Key Laboratory of Bioreactor Engineering, School of Bioengineering, East China University of Science and Technology, No.130 Mei Long Road, Shanghai 200237, China
| | - Shihao Li
- State Key Laboratory of Bioreactor Engineering, School of Bioengineering, East China University of Science and Technology, No.130 Mei Long Road, Shanghai 200237, China
| | - Weiqian Wu
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, Department of Product Engineering, School of Chemical Engineering, East China University of Science and Technology, No.130 Mei Long Road, Shanghai 200237, China
| | - Chenjing An
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, Department of Product Engineering, School of Chemical Engineering, East China University of Science and Technology, No.130 Mei Long Road, Shanghai 200237, China
| | - Jiahao Guo
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, Department of Product Engineering, School of Chemical Engineering, East China University of Science and Technology, No.130 Mei Long Road, Shanghai 200237, China
| | - Zhihua Zhu
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, Department of Product Engineering, School of Chemical Engineering, East China University of Science and Technology, No.130 Mei Long Road, Shanghai 200237, China
| | - Tian Zhou
- Department of Oral Maxillofacial-Head and Neck Oncology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, College of Stomatology, Shanghai Jiao Tong University, National Center for Stomatology, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology, Shanghai 200011, China..
| | - Yan Zhou
- State Key Laboratory of Bioreactor Engineering, School of Bioengineering, East China University of Science and Technology, No.130 Mei Long Road, Shanghai 200237, China..
| | - Lian Cen
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, Department of Product Engineering, School of Chemical Engineering, East China University of Science and Technology, No.130 Mei Long Road, Shanghai 200237, China.
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Jin L, Zhang X, Li Z, Ni S, Yan D, Liu S, An C. 1749P A multivariate logistic regression model to predict lateral lymph node metastases of medullary thyroid cancer. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.895] [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: 11/16/2022] Open
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11
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Yin Z, Zhang X, Sun Y, Miao S, An C. EP-1140 Retropharyngeal Lymph Node Metastasis in Hypopharyngeal Carcinoma: Analysis from Multi-center Data. Radiother Oncol 2019. [DOI: 10.1016/s0167-8140(19)31560-9] [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: 11/16/2022]
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12
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Zhang Y, Yao Y, Wang MM, Yang YZ, Gu TT, Cao ZF, Lu L, An C, Wang JW, Chen GH, Xu Q, Zhao WM. Comparisons in geese of the courtship, mating behaviors and fertility of the Carlos and Sichuan breeds and the breed crosses. Anim Reprod Sci 2019; 204:86-94. [PMID: 30890291 DOI: 10.1016/j.anireprosci.2019.03.008] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Revised: 02/28/2019] [Accepted: 03/14/2019] [Indexed: 10/27/2022]
Abstract
The Chinese goose originated from the swan goose (Anser cygnoides) and the European goose originated from the greylag goose (Anser anser). The Chinese and European geese have the potential to crossbreed. Whether interspecific differences in mating behaviors affect successful hybridization is unknown. In this study, 10-month-old Carlos geese (n = 120; Anser anser) and Sichuan geese (Anser cygnoides) were selected, and 12 multi-male parent families (3♂+12♀) were established. The courtship and mating behaviors of pure and cross-bred combinations of the Carlos and Sichuan geese were recorded using video cameras. Initiative courtship by males was the main type of courtship. Fixed mating, mating interference, and uncooperative mating were common in the flocks. The frequencies of some courtship and mating behaviors were less in the cross-bred groups (Carlos ganders × Sichuan geese, Sichuan ganders × Carlos geese) compared with the Sichuan pure-bred groups (P < 0.05). The Carlos male geese had some unique mating behaviors (i.e., one-to-one mating, formation of distinct hierarchies, and competition interference). The fertility rate had a significant correlation with the frequency of successful mating (rp = 0.992, P < 0.05), rather than with the courtship behavior. These results indicate there were lesser frequencies of courtship and successful matings in the cross-breeding than purebreeding groups. Furthermore, the fertility rate depended largely on the successful mating behavior and was independent of the courtship behavior.
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Affiliation(s)
- Y Zhang
- College of Animal Science and Technology, Yangzhou University, Yangzhou, Jiangsu Province, 225009, China.
| | - Y Yao
- College of Animal Science and Technology, Yangzhou University, Yangzhou, Jiangsu Province, 225009, China.
| | - M M Wang
- College of Animal Science and Technology, Yangzhou University, Yangzhou, Jiangsu Province, 225009, China.
| | - Y Z Yang
- College of Animal Science and Technology, Yangzhou University, Yangzhou, Jiangsu Province, 225009, China.
| | - T T Gu
- College of Animal Science and Technology, Yangzhou University, Yangzhou, Jiangsu Province, 225009, China.
| | - Z F Cao
- College of Animal Science and Technology, Yangzhou University, Yangzhou, Jiangsu Province, 225009, China.
| | - L Lu
- College of Animal Science and Technology, Yangzhou University, Yangzhou, Jiangsu Province, 225009, China.
| | - C An
- College of Animal Science and Technology, Yangzhou University, Yangzhou, Jiangsu Province, 225009, China.
| | - J W Wang
- College of Animal Science and Technology, Sichuan Agricultural University, Yaan, Sichuan, 625014, China.
| | - G H Chen
- College of Animal Science and Technology, Yangzhou University, Yangzhou, Jiangsu Province, 225009, China.
| | - Q Xu
- College of Animal Science and Technology, Yangzhou University, Yangzhou, Jiangsu Province, 225009, China.
| | - W M Zhao
- College of Animal Science and Technology, Yangzhou University, Yangzhou, Jiangsu Province, 225009, China.
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13
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Cho I, Kang H, Jo J, Lee H, Chung M, Park J, Park S, Song S, Park M, An C, Jung S, Bang S. FOLFIRINOX versus gemcitabine plus nab-paclitaxel for treatment of metastatic pancreatic cancer: a single-center cohort study. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy151.160] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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14
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Chon YE, Jung KS, Kim MJ, Choi JY, An C, Park JY, Ahn SH, Kim BK, Kim SU, Park H, Hwang SK, Rim KS, Han KH, Kim DY. Predictors of failure to detect early hepatocellular carcinoma in patients with chronic hepatitis B who received regular surveillance. Aliment Pharmacol Ther 2018; 47:1201-1212. [PMID: 29492988 DOI: 10.1111/apt.14578] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/04/2017] [Revised: 09/28/2017] [Accepted: 01/30/2018] [Indexed: 12/14/2022]
Abstract
BACKGROUND A proportion of chronic hepatitis B (CHB) patients are diagnosed with advanced hepatocellular carcinoma (HCC) despite regular surveillance. AIMS To determine predictors for HCC detection failure in CHB patients who underwent regular surveillance. METHODS CHB patients with well-preserved liver function, who underwent ultrasonography and alpha-foetoprotein (AFP) analysis every 6 months, were enrolled. Cox regression analysis was used to identify predictors for detection failure, defined as HCC initially diagnosed at Barcelona Clinic Liver Cancer (BCLC) stage B or C. RESULTS Of the 4590 CHB patients (mean age, 52.1 years; men, 61.6%), 169 patients were diagnosed with HCC (3.68%) and 35 (20.7%) HCC patients were initially diagnosed with HCC BCLC stage B or C. The cumulative incidence of HCC detection failure was 0.2% at year 1 and 1.3% at year 5. Multivariate analyses indicated that cirrhosis (hazard ratio [HR], 3.078; 95% CI, 1.389-6.821; P = 0.006), AFP levels ≥9 ng/mL (HR, 5.235; 95% CI, 2.307-11.957; P = 0.010), and diabetes mellitus (HR, 3.336; 95% CI, 1.341-8.296; P = 0.010) were independent predictors of HCC detection failure. Another model that incorporated liver stiffness (LS) values identified LS values ≥11.7 kPa (HR, 11.045; 95% CI, 2.066-59.037; P = 0.005) and AFP levels ≥9 ng/mL (HR, 4.802; 95% CI, 1.613-14.297; P = 0.005) as predictors of detection failure. CONCLUSIONS In CHB patients undergoing regular surveillance with ultrasonography and alpha-foetoprotein (AFP) analysis every 6 months, the HCC detection failure rate was not high (0.8% per person; 0.1% per test). However, careful attention should be paid in patients with advanced liver fibrosis (clinical cirrhosis or LS value >11.7 kPa), high AFP levels, or diabetes mellitus, who are prone to surveillance failure.
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Affiliation(s)
- Y E Chon
- Department of Internal Medicine, CHA Bundang Medical Center, Institute of Gastroenterology, CHA University, Seongnam, Korea.,CHA Bundang Liver Center, CHA Bundang Medical Center, Seongnam, Korea
| | - K S Jung
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - M-J Kim
- Department of Radiology, Yonsei University College of Medicine, Seoul, Korea
| | - J-Y Choi
- Department of Radiology, Yonsei University College of Medicine, Seoul, Korea
| | - C An
- Department of Radiology, Yonsei University College of Medicine, Seoul, Korea
| | - J Y Park
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea.,Yonsei Liver Center, Severance Hospital, Seoul, Korea
| | - S H Ahn
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea.,Yonsei Liver Center, Severance Hospital, Seoul, Korea
| | - B K Kim
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea.,Yonsei Liver Center, Severance Hospital, Seoul, Korea
| | - S U Kim
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea.,Yonsei Liver Center, Severance Hospital, Seoul, Korea
| | - H Park
- Department of Internal Medicine, CHA Bundang Medical Center, Institute of Gastroenterology, CHA University, Seongnam, Korea.,CHA Bundang Liver Center, CHA Bundang Medical Center, Seongnam, Korea
| | - S K Hwang
- Department of Internal Medicine, CHA Bundang Medical Center, Institute of Gastroenterology, CHA University, Seongnam, Korea.,CHA Bundang Liver Center, CHA Bundang Medical Center, Seongnam, Korea
| | - K S Rim
- Department of Internal Medicine, CHA Bundang Medical Center, Institute of Gastroenterology, CHA University, Seongnam, Korea.,CHA Bundang Liver Center, CHA Bundang Medical Center, Seongnam, Korea
| | - K-H Han
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea.,Yonsei Liver Center, Severance Hospital, Seoul, Korea
| | - D Y Kim
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea.,Yonsei Liver Center, Severance Hospital, Seoul, Korea
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15
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Zhou Q, Zuo MH, Li QW, Tian YT, Xie YB, Wang YB, Yang GY, Ye YJ, Guo P, Liu JP, Liu ZL, An C, Zhou T, Tian Z, Liu CB, Hu Y, Chi XY, Shen Y, Xia Y, Hu KW. [Efficacy of Weitan Waifu patch on the postsurgical gastroparesis syndrome of gastrointestinal cancer: a multi-center trial]. Zhonghua Zhong Liu Za Zhi 2018; 39:919-925. [PMID: 29262509 DOI: 10.3760/cma.j.issn.0253-3766.2017.12.008] [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 investigate the safety and efficacy of the Weitan Waifu patch on the postsurgical gastroparesis syndrome (PGS) of gastrointestinal cancer. Methods: The multi-center, double-blind, randomized controlled trial was conducted with superiority design. Patients with PGS of gastrointestinal cancer diagnosed in 4 AAA hospitals and the abdominal symptom manifested as cold syndrome by Chinese local syndrome differentiation were recruited. These patients were randomly divided into two groups according to 1∶1 proportion. Placebo or Weitan Waifu patch was applied in control group or intervention group, respectively, based on the basic treatments, including nutrition support, gastrointestinal decompression, promoting gastric dynamics medicine.Two acupuncture points (Zhongwan and Shenque) were stuck with placebo in control group or patch in treatment group. The intervention course was 14 days or reached the effective standard. Results: From July 15, 2013 to Jun 3, 2015, 128 participants were recruited and 120 eligible cases were included in the full analysis set (FAS), and 60 cases in each group. 88 cases were included in the per-protocol set (PPS), including 45 cases in the treatment group and 43 cases in the control group. In the FAS, the clinical effective rate in the treatment group was 68.3%, significantly superior than 41.7% of the control group (P=0.003). The medium time of effective therapy in the treatment group was 8 days, significantly shorter than 10 days in the control group (P=0.017). In the FAS, 3 adverse events occurred in the treatment group, including mild to moderate decrustation, pruritus and nausea. The incidence rate of adverse events was 5.0% (3/60) and these symptoms were spontaneously remitted after drug withdrawal. No severe adverse events were observed in the control group. There was no significant difference between these two groups (P=0.244). Conclusion: Weitan Waifu patch is a safely and effectively therapeutic method for patients with PGS (cold syndrome) of gastroenterological cancer. Trial registration: International Standard Randomized Controlled Trial Number Register, ISRCTN18291857.
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Affiliation(s)
- Q Zhou
- Department of Oncology, Dongfang Hospital, Beijing University of Chinese Medicine, Beijing 100078, China
| | - M H Zuo
- Department of Oncology, Dongfang Hospital, Beijing University of Chinese Medicine, Beijing 100078, China
| | - Q W Li
- Department of Oncology, Dongfang Hospital, Beijing University of Chinese Medicine, Beijing 100078, China
| | - Y T Tian
- Department of Pancreatic and Gastric Surgery, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Y B Xie
- Department of Pancreatic and Gastric Surgery, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Y B Wang
- Department of Hepatobiliary Surgery, Chinese PLA General Hospital, Beijing 100853, China
| | - G Y Yang
- Department of Hepatobiliary Surgery, Chinese PLA General Hospital, Beijing 100853, China
| | - Y J Ye
- Department of General Surgery, Peking University People's Hospital, Beijing 100044, China
| | - P Guo
- Department of General Surgery, Peking University People's Hospital, Beijing 100044, China
| | - J P Liu
- Evidence-Based Medicine Center, Beijing University of Chinese Medicine, Beijing 100029, Chinak
| | - Z L Liu
- Evidence-Based Medicine Center, Beijing University of Chinese Medicine, Beijing 100029, Chinak
| | - C An
- Department of Oncology, Dongfang Hospital, Beijing University of Chinese Medicine, Beijing 100078, China
| | - T Zhou
- Department of Oncology, Dongfang Hospital, Beijing University of Chinese Medicine, Beijing 100078, China
| | - Z Tian
- Department of Oncology, Dongfang Hospital, Beijing University of Chinese Medicine, Beijing 100078, China
| | - C B Liu
- Department of Oncology, Dongfang Hospital, Beijing University of Chinese Medicine, Beijing 100078, China
| | - Y Hu
- Department of Oncology, Dongfang Hospital, Beijing University of Chinese Medicine, Beijing 100078, China
| | - X Y Chi
- Department of Oncology, Dongfang Hospital, Beijing University of Chinese Medicine, Beijing 100078, China
| | - Y Shen
- Department of Oncology, Dongfang Hospital, Beijing University of Chinese Medicine, Beijing 100078, China
| | - Y Xia
- Department of Oncology, Dongfang Hospital, Beijing University of Chinese Medicine, Beijing 100078, China
| | - K W Hu
- Department of Oncology, Dongfang Hospital, Beijing University of Chinese Medicine, Beijing 100078, China
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16
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Wang Y, Jiang H, Cheng Y, An C, Chu Y, Raikhel AS, Zou Z. Activation of Aedes aegypti prophenoloxidase-3 and its role in the immune response against entomopathogenic fungi. Insect Mol Biol 2017; 26:552-563. [PMID: 28556276 PMCID: PMC5582978 DOI: 10.1111/imb.12318] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Serine protease cascade-mediated melanization is an important innate immune response in insects and crustaceans, which involves the proteolytic activation of prophenoloxidase (PPO). In this study, we investigated the role of Aedes aegypti PPO3 in antifungal immune defence. We expressed and purified recombinant PPO3 (rPPO3) in Escherichia coli and demonstrated that rPPO3 was activated by ethanol and, to a lesser extent, by cetylpyridinium chloride. In the presence of Cu2+ , rPPO3 exhibited enzyme activity. Immunoblot results revealed that the rPPO3 was cleaved by the haemolymph from immune-challenged mosquitoes or purified Ostrinia furnacalis serine protease 105 in vitro. The cleaved rPPO3 converted dopamine to toxic intermediates that killed fungal conidia of Beauveria bassiana in vitro. In mosquitoes challenged with Be. bassiana, cleavage of rPPO3 produced a 50 kDa phenoloxidase (PO) fragment. Further analysis revealed that the survival rate of mosquitoes with fungal infection increased significantly following injection of rPPO3 into the haemocoel. Taken together, our results suggest that proteolytic cleavage of the mosquito PPO3 plays an important role in the antifungal immune response. This has led to a better understanding of the mechanism of PPO activation in the mosquito and the role of melanization in the antifungal immune response.
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Affiliation(s)
- Y. Wang
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, P. R. China
| | - H. Jiang
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, P. R. China
| | - Y. Cheng
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - C. An
- Department of Entomology, College of Plant Protection, China Agricultural University, Beijing, 100193, P. R. China
| | - Y. Chu
- Department of Entomology, College of Plant Protection, China Agricultural University, Beijing, 100193, P. R. China
| | - A. S. Raikhel
- Department of Entomology and Institute for Integrative Genome Biology, University of California, Riverside, CA 92521, USA
| | - Z. Zou
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
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17
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An C, Yamamoto N. Fungal compositions and diversities on indoor surfaces with visible mold growths in residential buildings in the Seoul Capital Area of South Korea. Indoor Air 2016; 26:714-723. [PMID: 26509799 DOI: 10.1111/ina.12261] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [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: 08/13/2015] [Accepted: 10/23/2015] [Indexed: 06/05/2023]
Abstract
Indoor visible mold growths are known to be associated with allergies and respiratory illnesses. However, a question remains of their compositions and diversities. Using swab sampling and high-throughput DNA sequencing, this study analyzed taxonomic compositions and diversities of fungi on indoor surfaces laden with visible mold growths in residential apartments in South Korea. The sequencing results showed low species diversities with Shannon indices ranging from 0.14 to 2.29 (mean = 1.11). Several allergy-related genera were detected on the same surface, where the most abundant Cladosporium with a mean relative abundance of 41% co-occurred with less abundant Aspergillus (0.094%), Rhodotorula (6.3%), Cryptococcus (3.7%), Alternaria (4.1%), and Crivellia (17%). β diversity analyses showed significant differences in the fungal communities between enclosed balconies and other indoor areas (P < 0.05, ANOSIM), emphasizing a need to sample at multiple indoor locations when assessments are made for indoor visible mold growths. High-throughput sequencing is powerful in characterizing compositions and diversities of fungal communities. Future studies should examine the relationships between taxonomic compositions and diversities of indoor visible molds and health outcomes of allergies and respiratory illnesses in residential buildings.
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Affiliation(s)
- C An
- Department of Environmental Health Sciences, Graduate School of Public Health, Seoul National University, Seoul, South Korea
| | - N Yamamoto
- Department of Environmental Health Sciences, Graduate School of Public Health, Seoul National University, Seoul, South Korea.
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18
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Lee S, An C, Xu S, Lee S, Yamamoto N. High-throughput sequencing reveals unprecedented diversities of Aspergillus species in outdoor air. Lett Appl Microbiol 2016; 63:165-71. [PMID: 27333577 DOI: 10.1111/lam.12608] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Revised: 04/04/2016] [Accepted: 06/20/2016] [Indexed: 11/30/2022]
Abstract
UNLABELLED This study used the Illumina MiSeq to analyse compositions and diversities of Aspergillus species in outdoor air. The seasonal air samplings were performed at two locations in Seoul, South Korea. The results showed the relative abundances of all Aspergillus species combined ranging from 0·20 to 18% and from 0·19 to 21% based on the number of the internal transcribed spacer 1 (ITS1) and β-tubulin (BenA) gene sequences respectively. Aspergillus fumigatus was the most dominant species with the mean relative abundances of 1·2 and 5·5% based on the number of the ITS1 and BenA sequences respectively. A total of 29 Aspergillus species were detected and identified down to the species rank, among which nine species were known opportunistic pathogens. Remarkably, eight of the nine pathogenic species were detected by either one of the two markers, suggesting the need of using multiple markers and/or primer pairs when the assessments are made based on the high-throughput sequencing. Due to diversity of species within the genus Aspergillus, the high-throughput sequencing was useful to characterize their compositions and diversities in outdoor air, which are thought to be difficult to be accurately characterized by conventional culture and/or Sanger sequencing-based techniques. SIGNIFICANCE AND IMPACT OF THE STUDY Aspergillus is a diverse genus of fungi with more than 300 species reported in literature. Aspergillus is important since some species are known allergens and opportunistic human pathogens. Traditionally, growth-dependent methods have been used to detect Aspergillus species in air. However, these methods are limited in the number of isolates that can be analysed for their identities, resulting in inaccurate characterizations of Aspergillus diversities. This study used the high-throughput sequencing to explore Aspergillus diversities in outdoor, which are thought to be difficult to be accurately characterized by traditional growth-dependent techniques.
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Affiliation(s)
- S Lee
- Department of Environmental Health Sciences, Graduate School of Public Health, Seoul National University, Seoul, South Korea
| | - C An
- Department of Environmental Health Sciences, Graduate School of Public Health, Seoul National University, Seoul, South Korea
| | - S Xu
- Department of Environmental Health Sciences, Graduate School of Public Health, Seoul National University, Seoul, South Korea
| | - S Lee
- Department of Environmental Health Sciences, Graduate School of Public Health, Seoul National University, Seoul, South Korea
| | - N Yamamoto
- Department of Environmental Health Sciences, Graduate School of Public Health, Seoul National University, Seoul, South Korea
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19
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An C, Lee J, Yoo N, Lee S. Frameshift mutations of rapamycin pathway genes and their regional heterogeneity in sporadic colorectal cancers. Eur J Cancer 2016. [DOI: 10.1016/s0959-8049(16)61023-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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20
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Wang D, Wang X, Geng Y, An C. Detection of enterovirus 71 gene from clinical specimens by reverse-transcription loop-mediated isothermal amplification. Indian J Med Microbiol 2014; 32:124-9. [PMID: 24713896 DOI: 10.4103/0255-0857.129779] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
PURPOSE The objective of this study was to develop a sensitive, specific and rapid approach to diagnose hand foot and mouth disease (HFMD) for an early treatment by using loop-mediated isothermal amplification (LAMP) technique. MATERIALS AND METHODS A reverse-transcription loop-mediated isothermal amplification (RT-LAMP) for detecting EV71 virus was developed, the specificity and sensitivity of RT-LAMP was tested, and the clinical specimens was assayed by the RT-LAMP comparing with conventional reverse-transcription polymerase chain reaction (RT-PCR) and real-time PCR. RESULTS A total of 116 clinical specimens from the suspected HFMD individual were detected with the RT-LAMP. The detection rate for EV71 was 56.89% by RT-LAMP, 41.38% by real-time PCR and 34.48% by RT-PCR. The minimum detection limit of RT-LAMP was 0.01 PFU, both of RT-PCR and real-time PCR was 0.1PFU. Non-cross-reactive amplification with other enteroviruses was detected in the survey reports. CONCLUSIONS The effectiveness of RT-LAMP is higher than RT-PCR and real-time PCR. The protocol is easy to operate and time saving. It was not an expensive instrument, which was needed; it is an applicable method for rapid diagnosis of the disease, especially in resource-poor countries or in developing countries.
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Affiliation(s)
| | | | | | - C An
- Department of Medical Microbiology and Parasitology, College of Basic Medical Sciences, China Medical University, Shenyang 110001, China
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21
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An C, Choi Y, Kim M, Lee J, Yoo N, Lee S. 143 Regional bias of intratumoral genetic heterogeneity of nucleotide repeats in colon cancers with microsatellite instability. Eur J Cancer 2014. [DOI: 10.1016/s0959-8049(14)70269-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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22
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Affiliation(s)
- C. An
- Universidade Federal do Rio de Janeiro, Brazil; China University of Petroleum, China
| | | | - J. Su
- Universidade Federal do Rio de Janeiro, Brazil
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23
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He C, Cong X, Zhang R, Wu D, An C, Zhao Z. Regulation of circadian locomotor rhythm by neuropeptide Y-like system in Drosophila melanogaster. Insect Mol Biol 2013; 22:376-388. [PMID: 23614491 DOI: 10.1111/imb.12027] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Circadian rhythms in behaviour and physiology exist widely in animals, plants, fungi and cyanobacteria. Although much work has been carried out to characterize the endogenous clock circuit, the output signals coupling the circadian pacemaker to behaviour and physiology remain elusive. Here, we show that neuropeptide F (NPF), a homologue of mammalian neuropeptide Y, and its G protein-coupled receptor NPFR1 regulate the locomotor rhythm in Drosophila melanogaster. Flies with loss of function in NPF or NPFR1 were unable to ramp up their activity before lights off under light : dark (LD) cycles, and oscillations in npf/NPF and npfr1/NPFR1 were found to correlate temporally with the locomotor rhythm. Furthermore, NPF is expressed in clock neurones including dorsolateral neurones (LNd s) and ventrolateral neurones (LNv s), whereas NPFR1 is expressed in dorsal neurone 1 (DN1) and LNd s. These results show that NPF signalling is involved in the circadian locomotor rhythm in LD cycles.
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Affiliation(s)
- C He
- College of Agriculture and Biotechnology, China Agricultural University, Beijing, China
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24
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Ahn S, Kim J, An C, Choi H, Lee SK, Koh Y, Kim SH, Choi E. Preoperative imaging evaluation of head and neck cancer: Comparison of 2D spin-echo and 3D THRIVE MRI techniques with resected tumours. Clin Radiol 2012; 67:e98-e104. [DOI: 10.1016/j.crad.2012.08.017] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2012] [Revised: 08/08/2012] [Accepted: 08/14/2012] [Indexed: 11/24/2022]
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25
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Clements IP, Hayes DL, Mullan BP, Yan J, Chen K, Xu J, Fan X, Sun X, An C, Barin E, Celikyurt U, Vural A, Sahin T, Kilic T, Agacdiken A, Bildirici U, Ural D, Surinder K, Razali O, Zunida A, Tay GS, Asyikin SN, Azlan H. Cardiac Resynchronization Therapy. Europace 2011. [DOI: 10.1093/europace/euq477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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26
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Sadat MA, Dirscherl S, Sastry L, Dantzer J, Pech N, Griffin S, Hawkins T, Zhao Y, Barese CN, Cross S, Orazi A, An C, Goebel WS, Yoder MC, Li X, Grez M, Cornetta K, Mooney SD, Dinauer MC. Retroviral vector integration in post-transplant hematopoiesis in mice conditioned with either submyeloablative or ablative irradiation. Gene Ther 2010; 16:1452-64. [PMID: 19657370 PMCID: PMC2795029 DOI: 10.1038/gt.2009.96] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
X-linked chronic granulomatous disease (X-CGD) is an inherited immunodeficiency with absent phagocyte NADPH oxidase activity caused by defects in the gene encoding gp91phox. Here we evaluated strategies for less intensive conditioning for gene therapy of genetic blood disorders without selective advantage for gene correction, such as might be used in a human X-CGD protocol. We compared submyeloablative with ablative irradiation as conditioning in murine X-CGD, examining engraftment, oxidase activity and vector integration in mice transplanted with marrow transduced with a gamma-retroviral vector for gp91phox expression. The frequency of oxidase-positive neutrophils in the donor population was unexpectedly higher in many 300 cGy-conditioned mice compared to lethally irradiated recipients, as was the fraction of vector-marked donor secondary CFU-S12. Vector integration sites in marrow, spleen, and secondary CFU-S12 DNA from primary recipients were enriched for cancer-associated genes, including Evi1, and integrations in or near cancer-associated genes were more frequent in marrow and secondary CFU-S12 from 300 cGy-conditioned mice compared to fully ablated mice. These findings support the concept that vector integration can confer a selection bias, and suggest that intensity of the conditioning regimen may further influence the effects of vector integration on clonal selection in post-transplant engraftment and hematopoiesis.
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Affiliation(s)
- M A Sadat
- Department of Pediatrics, Herman B Wells Center for Pediatric Research, Riley Hospital for Children, Indiana University School of Medicine, Indianapolis, IN 46202, USA
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27
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Lee S, Kyung S, An C, Jeong S, Kim Y, Kim M, Ha K, Choi D, Kang S, Chung Y. Nonspecific Bronchial Hyperresponsiveness Caused by T. canis 2nd Stage Larval Infestation. J Allergy Clin Immunol 2007. [DOI: 10.1016/j.jaci.2006.12.231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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28
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Wang L, An C, Qian W, Liu T, Li J, Chen Z. Detection of the putative cis-region involved in the induction by a Pyricularia oryzae elicitor of the promoter of a gene encoding phenylalanine ammonia-lyase in rice. Plant Cell Rep 2004; 22:513-518. [PMID: 14714141 DOI: 10.1007/s00299-003-0717-3] [Citation(s) in RCA: 6] [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] [Received: 06/09/2003] [Revised: 08/27/2003] [Accepted: 08/28/2003] [Indexed: 05/24/2023]
Abstract
A rice PAL (phenylalanine ammonia-lyase) gene sequence ( rPAL-P5), which is highly similar to and likely the same as a previously described rice ZB8PAL gene, including the 5'-upstream and exon I coding regions of PAL, was isolated using PCR amplification. The expression of several PALs, including rPAL-P5, was strongly induced following inoculation with Pyricularia oryzae or treatment with a P. oryzae elicitor. To identify the promoter region induced by the P. oryzae elicitor, we constructed and subsequently transformed rPAL-P5 promoter deletion series into rice calli using particle bombardment. Results from both elicitor-inducible reporter gene and gel mobility shift assays demonstrated that the sequence -349 to -256 of the rPAL-P5 promoter includes a cis-element involved in the induction of P. oryzae.
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Affiliation(s)
- L Wang
- National Laboratory of Protein Engineering and Plant Genetic Engineering, College of Life Sciences, Peking University, 100871 Beijing, PR China
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Zhang C, Gong Y, Ma H, An C, Chen D, Chen ZL. Reactive oxygen species involved in trichosanthin-induced apoptosis of human choriocarcinoma cells. Biochem J 2001; 355:653-61. [PMID: 11311127 PMCID: PMC1221780 DOI: 10.1042/bj3550653] [Citation(s) in RCA: 69] [Impact Index Per Article: 3.0] [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: 12/22/2022]
Abstract
The type-I ribosome-inactivating protein trichosanthin (TCS) has a broad spectrum of biological and pharmacological activities, including abortifacient, anti-tumour and anti-HIV activities. We have found for the first time that TCS stimulated the production of reactive oxygen species (ROS) in JAR cells (a human choriocarcinoma cell line) in a time- and concentration-dependent manner by using the fluorescent probe 2',7'-dichlorofluorescein diacetate with confocal laser scanning microscopy. ESR spectral studies and the inhibition of ROS formation by the superoxide radical anion (O(2)(-.)) scavenger superoxide dismutase, the H(2)O(2) scavenger catalase and the hydroxyl radical (OH(.)) scavenger mannitol suggested the involvement of O(2)(-.), H(2)O(2) and OH(.). TCS-induced ROS formation was shown to be dependent on the presence of both extracellular and intracellular Ca(2+); moreover, ROS production paralleled the intracellular Ca(2+) elevation induced by TCS, suggesting that ROS production might be a consequence of Ca(2+) signalling. TCS-induced activation of caspase-3 was initiated within 2 h; however, TCS-induced production of ROS was initiated within 5 min, suggesting that the production of ROS preceded the activation of caspase-3. Simultaneous observation of the nuclear morphological changes via two-photon laser scanning microscopy and ROS production via confocal laser scanning microscopy revealed that ROS is involved in the apoptosis of JAR cells. The involvement of ROS was also confirmed by the inhibition of TCS-induced cell death by the antioxidant Trolox and the ROS scavengers catalase and mannitol. Diethylenetriaminepenta-acetic acid, an inhibitor of metal-facilitated OH(.) formation, markedly inhibited TCS-induced cell death, suggesting that TCS induced OH(.) formation via the Fenton reaction. The finding that ROS is involved in the TCS-induced apoptosis of JAR cells might provide new insight into the anti-tumour and anti-HIV mechanism of TCS.
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Affiliation(s)
- C Zhang
- Molecular and Nano Sciences Laboratory, Department of Physics, Tsinghua University, Beijing 100084, China
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Yu L, Li Y, Gu G, Wang Y, Zhou B, An C, Chen Z. A fast, sensitive and specific method for rice dwarf virus detection by northern blot hybridization. Acta Virol 1999; 43:361-5. [PMID: 10825925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
Based on stability of double-stranded (ds) RNA, a new, fast, sensitive, and specific method for detection of genomic rice dwarf virus (RDV) dsRNA by molecular hybridization was developed. In contrary to the commonly used, standard Northern blot analysis, dsRNA is denatured in the immobilized state on the blot. Therefore, risk of degradation of single-stranded (ss) RNA by ribonuclease (RNase) during sample preparation, electrophoresis and blotting is eliminated. This method overcomes disadvantage of incomplete denaturation of dsRNA in Northern blot analysis. In conclusion, the newly developed method is reliable, sensitive, very specific, and gives a low background. The entire procedure is also less time consuming; it can be completed within 2-3 days. The new method may be regarded as a modification of the standard Northern blot analysis.
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Affiliation(s)
- L Yu
- College of Life Science, Peking University, Beijing, P.R. of China.
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31
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Hu P, An C, Li Y, Chen Z. [Prokaryotic expressed trichosanthin and other two proteins have anti-fungal activity in vitro]. Wei Sheng Wu Xue Bao 1999; 39:234-40. [PMID: 12555540] [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
DNAs encoding Trichosanthin, tobacco class I Chitinase and tobacco class I beta-1, 3-Glucanase were expressed in E. coli, respectively. The expression products were assayed for their anti-fungal activity. All of three kinds of proteins show anti-fungal activity. When two of them combined, this activity was enhanced greatly. When three of them combined, the stronger anti-fungal activity was observed.
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Affiliation(s)
- P Hu
- National Laboratory of Protein Engineering and Plant Genetic Engineering, College of Life Sciences, Peking University, Beijing, 100871
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Xu H, Li Y, Mao Z, Li Y, Wu Z, Qu L, An C, Ming X, Schiemann J, Casper R, Chen Z. Rice dwarf phytoreovirus segment S11 encodes a nucleic acid binding protein. Virology 1998; 240:267-72. [PMID: 9454700 DOI: 10.1006/viro.1997.8945] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.0] [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: 02/06/2023]
Abstract
The function of rice dwarf virus segment 11 and the corresponding segments of other phytoreoviruses is not yet determined. The amino acid sequence of Pns11, encoded by segment 11, contains a putative zinc finger and five flanking basic regions at the C-terminus. The full-length Pns11 protein and three truncated derivatives, which lack the N-terminus, the zinc-finger or the C-terminal five basic regions were expressed in Escherichia coli and their nucleic acid binding properties were studied. Pns11 interacts with single- and double-stranded forms of DNA and RNA in a sequence-nonspecific manner. The truncated derivative which contains both the zinc-finger and the C-terminal basic regions has the same binding properties as the full-length Pns11. However, removal of either of these domains prevents binding activity. The binding activity of Pns11 was drastically reduced when the blots were treated with a high concentration of EDTA. Moreover, Pns11 extracted from infected rice also binds to single-stranded RNA. These data suggest that RDV Pns11 binding activity is structure-dependent and it may play an important role in virus replication and/or genome assortment.
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Affiliation(s)
- H Xu
- National Laboratory of Protein Engineering and Plant Genetic Engineering, College of Life Sciences, Peking University, Beijing, China
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33
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Zhang F, Li Y, Liu Y, An C, Chen Z. Molecular cloning, sequencing, functional analysis and expression in E. coli of major core protein gene (S3) of rice dwarf virus Chinese isolate. Acta Virol 1997; 41:161-8. [PMID: 9385405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The complete nucleotide sequence of major core protein gene (segment S3) of rice dwarf virus (RDV) Chinese isolate was determined after cDNA cloning from the viral genomic RNA. Sequence analysis showed that the cloned fragment is 3195 bp in length and contains a single open reading frame (ORF), encoding the major core protein (P3) which M(r) of 114 K. The nucleotide and deduced amino acid sequences of S3 of this isolate share significant homology (94.1% and 97%, respectively) with those of S3 of the Japanese isolate. At the amino acid level, P3 of RDV Chinese isolate shares significant homology with P3 of rice gall dwarf virus (RGDV), significant regional homology with the rotavirus penetration, and homology with spheroidin of amsacta entomopoxvirus (SPH), which is the major protein of the occlusion body, with clp-like ATP-dependent protease binding subunit and with ATP-dependent protease ATP-binding subunit. Amino acid sequence analysis also showed that P3 contains RNA-dependent RNA polymerase (RDRP) motif-like elements such as DXXXD, SGXXXXXXN, GDD and ENXXXY. These results may suggest that P3 is a multifunctional protein which plays very important roles in the virus structure formation, virus replication and penetration processes. The full length cDNA sequence of RDV S3 and a partial one which covers nt 1004-3195 were cloned into bacterial expression vector pTrcHisB for expression. The full length cDNA sequence failed to be expressed in E. coli, but the partial sequence was successfully expressed there as confirmed by the Western blot analysis. Further analysis of RDV P3 is under way.
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Affiliation(s)
- F Zhang
- National Laboratory of Protein Engineering and Plant Genetic Engineering, College of Life Sciences, Peking University, Beijing, P.R. of China
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Zhao X, Jiang S, Lu D, Lu L, Mao C, An C, Fan Y. [A resonance Raman spectrometer with UV-visible continuously tunable excitation lines]. Guang Pu Xue Yu Guang Pu Fen Xi 1997; 17:65-69. [PMID: 15810418] [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: 05/24/2023]
Abstract
A set of resonance Raman spectrometer with excitation lines continuously tunable in 220-970nm, which is a first set in China, has been assembled. The factors influenced on the signal noise ratio (SNR) of spectra were analyzed in detail. The methods to improve the SNR were suggested and the parameters of the spectrometer were optimized. A satisfied Raman spectra can be obtained.
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Affiliation(s)
- X Zhao
- National Laboratory of Laser Technology, Huazhong University of Science and Technology, Wuhan 430074
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35
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Zhang R, An C, Chen M. [Comparative study of HCG receptors in rat ovary and testis]. Hua Xi Yi Ke Da Xue Xue Bao 1995; 26:257-60. [PMID: 8586387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
It has been documented that there are specific human chorionic gonadotropin (HCG) receptors in cell membrane of rat ovary and testicle. In order to make a further study on the characteristics of the HCG receptors on rat ovary and testicle, we focused on comparing those two kinds of receptors. Furthermore, we contrasted the testicular cell membrane with its homogenates. Rat ovarian and testicles were homogenized and soniced under ice cold conditions. The homogenates were centrifuged at 12,100 x g for 20 min following filtration. After sucrose density gradient ultracentrifugation (78,000 x g, 2.5h) for the pellets, the interface layers between 37% and 41% were collected. The pellets were subsequently suspended in cold 1mmol/L NaHCO3 solution and recentrifuged at 27,000 x g for 25 min. The results show that the cell membrane of both the rat ovary and testicle can bind to HCG specifically. A small amount of HCG has more evident inhibitory effect on the binding in testis than ovary. Scatchard plot analysis for the binding assay yielded a bound capacity of testicle cell membrane of 4.5 x 10(-5) mol/micrograms protein, Kd of 1.6 x 10(-7) mol/L, whereas it was 0.51 x 10(-9) mol/micrograms protein, a Kd of 1.69 x 10(-6) mol/L in ovarian cell membrane. In comparison with homogenates and cell membrane, the HCG binding activity of later is more sensitive.
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Affiliation(s)
- R Zhang
- Department of Biochemistry, Pharmaceutical College
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Zhao X, Lu D, Jiang S, Mao C, Fan Y, An C, Li Z. Interaction between intercalation type anticancer drugs and DNA studied by ultraviolet resonance Raman spectroscopy. Sci China B 1995; 38:555-63. [PMID: 7626197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The interaction of typical intercalation type anticancer drugs, adriamycin (ADM) and aclacinomycin (ACM), with calf thymus DNA was studied first with ultraviolet resonance Raman spectroscopy (UVRRS). The results demonstrate that the important information such as intercalation sites of drugs, the electronic interaction and the hydrogen bonds between drugs and DNA can be obtained by UVRRS. The method can also show the influence of drugs on DNA conformation and hydrogen bonds between bases of DNA.
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Affiliation(s)
- X Zhao
- State Key Laboratory of Laser Technology, Huazhong University of Science and Technology, Wuhan, China
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An C, Okada Y, Hamaguchi A, Konishi T, Tomoyoshi T, Kataoka A. [Spontaneous renal rupture caused by renal pelvic tumor: a case report]. Hinyokika Kiyo 1995; 41:133-6. [PMID: 7702005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
A case of spontaneous rupture of the right kidney caused by a primary renal pelvic tumor is reported. A 57-year-old man complaining of right flank pain and gross hematuria was referred to our hospital in November 1992. In 1982, transurethral resection of the bladder tumor (TUR-Bt) and vesical instillation with mitomycin-C (MMC) had been performed at another hospital for recurrent bladder tumor. In 1988, the excretory urogram showed right hydronephrosis in the absence of a bladder tumor. In 1992, the excretory urogram revealed nonvisualization of the right kidney and obscurity of the right psoas muscle shadow. On the retrograde pyelogram, the upper calyx was irregular and the middle and lower calices were not clearly visualized. Selective renal arteriography demonstrated loss of continuity between the middle portion and lower poles. Right nephroureterectomy with bladder cuff was performed. The severely dilated pelvis contained a large amount of coagula and a papillary tumor. The thin renal parenchyme was lacerated at the lower pole. Histopathological findings revealed noninvasive transitional cell carcinoma. The present case represents the 6th spontaneous renal rupture caused by a renal pelvic tumor reported in Japan.
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Affiliation(s)
- C An
- Department of Urology, Shiga University of Medical Science
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Sheng H, Chen L, Zhang Z, Wu C, An C, Cheng C. The droplet group microexplosions in water-in-oil emulsion sprays and their effects on diesel engine combustion. ACTA ACUST UNITED AC 1994. [DOI: 10.1016/s0082-0784(06)80642-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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An C, Ichinose Y, Yamada T, Tanaka Y, Shiraishi T, Oku H. Organization of the genes encoding chalcone synthase in Pisum sativum. Plant Mol Biol 1993; 21:789-803. [PMID: 8467077 DOI: 10.1007/bf00027112] [Citation(s) in RCA: 8] [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: 05/22/2023]
Abstract
To analyze the regulation of defense-related genes by signal molecules produced by phytopathogens, we isolated genes that encode chalcone synthase (CHS) in Pisum sativum. We have obtained seven independent genomic clones that contain at least seven classes of CHS genes, identified by the hybridization analysis to CHS cDNA and by the restriction mapping analysis. Two of the genomic clones (clone 5 and 6) each contain two CHS genes in a tandem repeat. The nucleotide sequence analysis of CHS genomic clone 5 revealed that PsCHS1 and PsCHS2 were corresponding genes of the CHS cDNA clones, pCC6 and pCC2, respectively, as reported earlier. Both genes are interrupted by a single intron of 88 nucleotides with identical sequences, although exonic sequences and 5'-flanking sequences are divergent. Nucleotide sequences of the introns in five other classes of CHS genes showed that three classes had an intron of 87 nt with a striking homology to each other, but that the intron of the other two classes of CHS genes showed heterogeneity both in size and nucleotide sequence. 5'-upstream regions of PsCHS1 and PsCHS2 did not show sequence homology except the 31 bp identical sequence that contains the CCTACC motif resembling the box-1 sequence. Both PsCHS1 and PsCHS2 genes are shown to be induced by fungal elicitor by a primer extension analysis and a transient transformation analysis using pea protoplasts prepared from suspension cultured-cells.
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Affiliation(s)
- C An
- Laboratory of Plant Pathology & Genetic Engineering, College of Agriculture, Okayama University, Japan
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