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Peng LY, Wang X, Geng W, Su YC. [Implant restoration and stomatognathic system rehabilitation]. Zhonghua Kou Qiang Yi Xue Za Zhi 2023; 58:971-977. [PMID: 37818530 DOI: 10.3760/cma.j.cn112144-20230817-00093] [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: 10/12/2023]
Abstract
Stomatognathic system rehabilitation (SSR) is an important component of dental implant therapy, involving multiple disciplines and factors. This article focuses on the importance of clinical issues, such as mandibular position, vertical distance, occlusion and temporomandibular joint in SSR, in order to provide reference for dentists in clinical diagnosis and treatment.
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Affiliation(s)
- L Y Peng
- Department of Dental Implantology, Beijing Citident Hospital of Stomatology, Institute of Implantology, Beijing 100032, China
| | - X Wang
- Department of Dental Implantology, Beijing Citident Hospital of Stomatology, Institute of Implantology, Beijing 100032, China
| | - W Geng
- Department of Dental Implant Center, Capital Medical University School of Stomatology, Beijing 100050, China
| | - Y C Su
- Department of Dental Implant Center, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100032, China
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Bai H, Zhang YC, Zhou YJ, Chen P, Wan CH, Han L, Zhu WX, Liang SX, Su YC, Han XF, Pan F, Song C. Efficient Spin-to-Charge Conversion via Altermagnetic Spin Splitting Effect in Antiferromagnet RuO_{2}. Phys Rev Lett 2023; 130:216701. [PMID: 37295074 DOI: 10.1103/physrevlett.130.216701] [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: 12/22/2022] [Accepted: 04/20/2023] [Indexed: 06/12/2023]
Abstract
The relativistic spin Hall effect and inverse spin Hall effect enable the efficient generation and detection of spin current. Recently, a nonrelativistic altermagnetic spin splitting effect (ASSE) has been theoretically and experimentally reported to generate time-reversal-odd spin current with controllable spin polarization in antiferromagnet RuO_{2}. The inverse effect, electrical detection of spin current via ASSE, still remains elusive. Here we show the spin-to-charge conversion stemming from ASSE in RuO_{2} by the spin Seebeck effect measurements. Unconventionally, the spin Seebeck voltage can be detected even when the injected spin current is polarized along the directions of either the voltage channel or the thermal gradient, indicating the successful conversion of x- and z-spin polarizations into the charge current. The crystal axes-dependent conversion efficiency further demonstrates that the nontrivial spin-to-charge conversion in RuO_{2} is ascribed to ASSE, which is distinct from the magnetic or antiferromagnetic inverse spin Hall effects. Our finding not only advances the emerging research landscape of altermagnetism, but also provides a promising pathway for the spin detection.
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Affiliation(s)
- H Bai
- Key Laboratory of Advanced Materials, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
| | - Y C Zhang
- Key Laboratory of Advanced Materials, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
| | - Y J Zhou
- Key Laboratory of Advanced Materials, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
| | - P Chen
- Beijing National fLaboratory for Condensed Matter Physics, Institute of Physics, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100190, China
| | - C H Wan
- Beijing National fLaboratory for Condensed Matter Physics, Institute of Physics, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100190, China
| | - L Han
- Key Laboratory of Advanced Materials, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
| | - W X Zhu
- Key Laboratory of Advanced Materials, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
| | - S X Liang
- Key Laboratory of Advanced Materials, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
| | - Y C Su
- Key Laboratory of Advanced Materials, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
| | - X F Han
- Beijing National fLaboratory for Condensed Matter Physics, Institute of Physics, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100190, China
| | - F Pan
- Key Laboratory of Advanced Materials, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
| | - C Song
- Key Laboratory of Advanced Materials, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
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Reshi L, Wang HV, Hui CF, Su YC, Hong JR. Corrigendum to "Anti-apoptotic genes Bcl-2 and Bcl-xL overexpression can block iridovirus serine/threonine kinase-induced Bax/mitochondria-mediated cell death in GF-1 cells" [Fish Shellfish Immunol. 61 (2017) 120-129]. Fish Shellfish Immunol 2022; 122:501. [PMID: 35177309 DOI: 10.1016/j.fsi.2022.02.006] [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] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Affiliation(s)
- Latif Reshi
- Lab of Molecular Virology and Biotechnology, Institute of Biotechnology, National Cheng Kung University, No. 1 University Road, Tainan City, 701, Taiwan, ROC; Department of Life Sciences, College of Bioscience and Biotechnology, National Cheng Kung University, No. 1 University Road, Tainan City, 701, Taiwan, ROC
| | - Hao-Ven Wang
- Department of Life Sciences, College of Bioscience and Biotechnology, National Cheng Kung University, No. 1 University Road, Tainan City, 701, Taiwan, ROC
| | - Cho-Fat Hui
- Institute of Cellular and Organismic Biology, Academia Sinica, Nankang, Taipei, 115, Taiwan, ROC
| | - Yu-Chin Su
- Lab of Molecular Virology and Biotechnology, Institute of Biotechnology, National Cheng Kung University, No. 1 University Road, Tainan City, 701, Taiwan, ROC
| | - Jiann-Ruey Hong
- Lab of Molecular Virology and Biotechnology, Institute of Biotechnology, National Cheng Kung University, No. 1 University Road, Tainan City, 701, Taiwan, ROC; Department of Biotechnology and Bioindustry, National Cheng Kung University, No. 1 University Road, Tainan City, 701, Taiwan, ROC.
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Wu MT, Tang SX, Peng LY, Han YT, Su YC, Wang X. [Scan time and accuracy of full-arch scans with intraoral scanners: a comparative study on conditions of the intraoral head-simulator and the hand-held model]. Zhonghua Kou Qiang Yi Xue Za Zhi 2021; 56:570-575. [PMID: 34098673 DOI: 10.3760/cma.j.cn112144-20210221-00082] [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: 06/12/2023]
Abstract
Objective: To comparatively evaluate the scan time and the accuracy of maxillary full-arch scans using four intraoral scanners (IOS) on conditions of the intraoral head-simulator and the hand-held model, and to evaluate the influence of different scanning conditions on digital scan. Methods: A upper dental arch model with melamine-formaldehyde resin teeth and silica gel gingiva that could be fixed on a head simulator was scanned with an optical scanner (ATOS Core) in order to obtain the standard tessellation language dataset as reference. Intraoral scans were performed on the model fixed on the head simulator by three researchers with four IOS [A: TRIOS 3; B: CS 3600; C: CEREC Omnicam; D: iTero]. For each scanner and each researcher, six scans were performed, to obtain the datasets as the head simulator group. And another six scans with each of the four intraoral scanners were performed by each researcher on the hand-held model to obtain the STL datasets as the hand-held group. The scan time were recorded for each scan. In the Geomagic Wrap software, the digital models were trimmed with only the teeth information retained and supreimposed by best fit alignment function and compared to obtain the root mean square (RMS) values of the discrepancies by three-dimensional compare function. The test datasets of each group were compared with the reference dataset for trueness. The six test scanning datasets with the same scanner of the same researcher were cross compared for precision. Mann Whitney U test was used to statistically analyze the difference values of the scan time, trueness and precision of the same intraoral scanner between head simulator group and hand-held group. Results: Compared to the hand-held group, the scan time of A [142(82) s] and D [119(52) s], which two IOS both with handle, were longer in head simulator group [A: 98(28) s; D: 85(22) s] (P<0.01). However there were no significant differences between the two groups for scan time of IOS B and C (P>0.05). For full-arch scan accuracy (trueness and precision), there were no significant differences between the two groups of IOS A and B (P>0.05), while the trueness of C (P<0.05) and the precision of D (P<0.01) were better in head simulator group [C: 112(38) μm; D: 43(13) μm] compared to hand-held group [C: 135(47) μm; D: 53(18) μm]. However, there were no significant differences for the precision of C (P>0.05) and the trueness of D (P>0.05). Conclusions: The scan time and the accuracy of full-arch digital scans with different IOS may be effected by the scan conditions. For in vitro study of intraoral scanning, head-simulator can simulate the intraoral environment of the real patient to some extent. Meanwhile, the position of the dentist and the patient, and also the limited intraoral space during intraoral scanning are also simulated.
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Affiliation(s)
- M T Wu
- Department of Implantology and Prosthodontics, Beijing Ruicheng Stomatology Hospital, Beijing Ruicheng Implant Technology College, Beijing 100032, China
| | - S X Tang
- Department of Implantology and Prosthodontics, Beijing Ruicheng Stomatology Hospital, Beijing Ruicheng Implant Technology College, Beijing 100032, China
| | - L Y Peng
- Department of Implantology and Prosthodontics, Beijing Ruicheng Stomatology Hospital, Beijing Ruicheng Implant Technology College, Beijing 100032, China
| | - Y T Han
- Department of Implantology and Prosthodontics, Beijing Ruicheng Stomatology Hospital, Beijing Ruicheng Implant Technology College, Beijing 100032, China
| | - Y C Su
- Dental Implant Center, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100033, China
| | - X Wang
- Department of Implantology and Prosthodontics, Beijing Ruicheng Stomatology Hospital, Beijing Ruicheng Implant Technology College, Beijing 100032, China
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Su YC. [New developments and advances in surgery in dental implantology]. Zhonghua Kou Qiang Yi Xue Za Zhi 2020; 55:803-808. [PMID: 33171550 DOI: 10.3760/cma.j.cn112144-20200716-00421] [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
Oral implantology has experienced more than half a century of development, the theoretical foundation and clinical technology are becoming more mature. This article elaborates on the establishment of implant timing, implant-related bone augmentation technology, surgical alternatives to bone augmentation technology, implant-related soft tissue augmentation technology, and computer-guided surgery. Provide a reference for a comprehensive understanding of dental implant surgery technology and its new developments.
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Affiliation(s)
- Y C Su
- Dental Implant Center, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100033, China
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Thornton RB, Hakansson A, Hood DW, Nokso-Koivisto J, Preciado D, Riesbeck K, Richmond PC, Su YC, Swords WE, Brockman KL. Panel 7 - Pathogenesis of otitis media - a review of the literature between 2015 and 2019. Int J Pediatr Otorhinolaryngol 2020; 130 Suppl 1:109838. [PMID: 31879085 PMCID: PMC7062565 DOI: 10.1016/j.ijporl.2019.109838] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
OBJECTIVE To perform a comprehensive review of the literature from July 2015 to June 2019 on the pathogenesis of otitis media. Bacteria, viruses and the role of the microbiome as well as the host response are discussed. Directions for future research are also suggested. DATA SOURCES PubMed database of the National Library of Medicine. REVIEW METHODS PubMed was searched for any papers pertaining to OM pathogenesis between July 2015 and June 2019. If in English, abstracts were assessed individually for their relevance and included in the report. Members of the panel drafted the report based on these searches and on new data presented at the 20th International Symposium on Recent Advances in Otitis Media. CONCLUSIONS The main themes that arose in OM pathogenesis were around the need for symptomatic viral infections to develop disease. Different populations potentially having different mechanisms of pathogenesis. Novel bacterial otopathogens are emerging and need to be monitored. Animal models need to continue to be developed and used to understand disease pathogenesis. IMPLICATIONS FOR PRACTICE The findings in the pathogenesis panel have several implications for both research and clinical practice. The most urgent areas appear to be to continue monitoring the emergence of novel otopathogens, and the need to develop prevention and preventative therapies that do not rely on antibiotics and protect against the development of the initial OM episode.
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Affiliation(s)
- R B Thornton
- Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, Perth, Western Australia, Australia; School of Biomedical Sciences, Faculty Health and Medical Science, University of Western Australia, Perth, Western Australia, Australia
| | - A Hakansson
- Experimental Infection Medicine, Dept. of Translational Medicine, Faculty of Medicine, Lund University, Malmö, Sweden
| | - D W Hood
- MRC Harwell Institute, Mammalian Genetics Unit, Harwell Campus, Oxfordshire, OX11 0RD, UK
| | - J Nokso-Koivisto
- Department of Otorhinolaryngology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - D Preciado
- Sheikh Zayed Center for Pediatric Surgical Innovation, Children's National Health System, Washington, DC, USA; Division of Pediatric Otolaryngology, Children's National Health System, Washington, DC, USA
| | - K Riesbeck
- Clinical Microbiology, Dept. of Translational Medicine, Faculty of Medicine, Lund University, Malmö, Sweden
| | - P C Richmond
- School of Medicine, Division of Paediatrics, Faculty Health and Medical Science, University of Western Australia, Perth, Western Australia, Australia; Perth Children's Hospital, Perth, Western Australia, Australia
| | - Y C Su
- Clinical Microbiology, Dept. of Translational Medicine, Faculty of Medicine, Lund University, Malmö, Sweden
| | - W E Swords
- Department of Microbiology and Immunology, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - K L Brockman
- Department of Microbiology & Immunology, Medical College of Wisconsin, Milwaukee, WI, USA.
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Wang T, Ni JB, Wang XY, Dai Y, Ma XL, Su YC, Gao YY, Chen X, Yuan LL, Liu HX. [Genetic characteristics and clinical outcomes of pediatric acute myeloid leukemia with NUP98-NSD1 fusion gene]. Zhonghua Yi Xue Za Zhi 2019; 99:2820-2825. [PMID: 31550809 DOI: 10.3760/cma.j.issn.0376-2491.2019.36.005] [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 investigate the genetic characteristics and clinical outcomes of pediatric acute myeloid leukemia patients with NUP98-NSD1 fusion gene. Methods: A total of 80 pediatric AML patients were enrolled in this study, and bone marrow specimens were collected at initial diagnosis and relapse. NUP98-NSD1 was screened by fluorescence in situ hybridization (FISH) and PCR. Other laboratory test results and clinical outcomes were further analyzed for the NUP98-NSD1 positive cases. Results: A total of eight patients (10.0%) were positive for NUP98-NSD1, which were all fusions of NUP98 exon12 and NSD1 exon 6. There were two M2, three M4, and three M5 cases according to the French-American-British classification. Seven patients had karyotype results at the time of initial diagnosis, and none of them had complicated karyotype abnormalities. Among these patients, two cases had normal karyotype, three cases had trisomy 8, one case had trisomy 6, and two cases had anomalies involving 9q13 or 9q21. Additional karyotypic abnormalities and clonal evolutions were observed during disease progression or relapse, five cases had 9q13 or 9q32 abnormalities. Five cases (62.5%) were positive with FLT3-ITD mutation. Patients were treated with DAE/NAE/HAE/IA chemotherapy. Three cases did not achieve remission after several courses of chemotherapy, and five cases achieved remission but relapsed in 1 to 19 months. Five cases underwent salvage allogeneic hematopoietic stem cell transplantation (allo-HSCT). Among whom, four died in 40 days to 4 months after transplantation, and one survived 8.5 months till the last follow-up. Conclusions: NUP98-NSD1 is a recurrent genetic abnormality with significant clinical prognostic significance, and this group of disease has unique clinical and genetic characteristics. NUP98-NSD1 should be screened by FISH or PCR for children with AML who are newly diagnosed or refractory and relapsed to identify the high-risk genetic marker.
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Affiliation(s)
- T Wang
- Department of Pathology & Laboratory Medicine, Hebei Yanda Lu Daopei Hospital, Langfang 065201, China
| | - J B Ni
- Department of Pathology & Laboratory Medicine, Hebei Yanda Lu Daopei Hospital, Langfang 065201, China
| | - X Y Wang
- Department of Pathology & Laboratory Medicine, Hebei Yanda Lu Daopei Hospital, Langfang 065201, China
| | - Y Dai
- Department of Pathology & Laboratory Medicine, Hebei Yanda Lu Daopei Hospital, Langfang 065201, China
| | - X L Ma
- Department of Pathology & Laboratory Medicine, Hebei Yanda Lu Daopei Hospital, Langfang 065201, China
| | - Y C Su
- Department of Pathology & Laboratory Medicine, Hebei Yanda Lu Daopei Hospital, Langfang 065201, China
| | - Y Y Gao
- Department of Pathology & Laboratory Medicine, Hebei Yanda Lu Daopei Hospital, Langfang 065201, China
| | - X Chen
- Department of Pathology & Laboratory Medicine, Hebei Yanda Lu Daopei Hospital, Langfang 065201, China
| | - L L Yuan
- Department of Pathology & Laboratory Medicine, Hebei Yanda Lu Daopei Hospital, Langfang 065201, China
| | - H X Liu
- Beijing Lu Daopei Institute of Hematology, Beijing 100176, China
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Cui HX, Shen QC, Zheng MQ, Su YC, Cai RC, Yu Y, Yang XR, Chen ZW, Wen J, Zhao GP. A selection method of chickens with blue-eggshell and dwarf traits by molecular marker-assisted selection. Poult Sci 2019; 98:3114-3118. [PMID: 31115461 DOI: 10.3382/ps/pez069] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Accepted: 03/23/2019] [Indexed: 01/20/2023] Open
Abstract
The blue-eggshell and dwarf traits have an important economic value in poultry production. Using a genetic aggregation-based strategy, the molecular marker-assisted selection technology was jointly used to provide a rapid breeding method for pure strain chickens simultaneously with hens exhibiting the blue-eggshell and dwarf traits. Overall, 80 male dwarf chickens and 1,000 hybrid blue-eggshell hens (F0) were used for the hybridization experiment. Subsequently, the crossing of F1 or F2 chicks was performed in succession. The F1 and F2 chicks were respectively detected by the joint molecular markers of the solute carrier organic anion transporter family, namely, 1B3 (SLCO1B3) and the growth hormone receptor (GHR) genes, which relate to blue-eggshell and dwarf traits. Meanwhile, the selection of blue-eggshell and dwarf phenotypes was used to validate the data obtained by the molecular markers. The results showed that F1 chicks included the heterozygous and wild-type of SLCO1B3, as well as the homozygous (hens) and heterozygous (roosters) of GHR. However, F2 chicks included 3 different genotypes of both SLCO1B3 and GHR. Ultimately, 196 F1 roosters (concurrently with heterozygous genotype of SLCO1B3 and GHR) and 1,073 F1 hens (concurrently with heterozygous genotype of SLCO1B3 and homozygous genotype of GHR) were obtained from the initial 10,040 F1 chicks. Further, 27 F2 roosters and 345 F2 hens, which simultaneously carried the homozygous genotype of SLCO1B3 and GHR, were screened from the initial 6,000 F2 chicks. Data obtained on the blue-eggshell and dwarf phenotypes were consistent with the results by molecular markers. Similarly, the purity verification of the strain obtained through 2 crossing experiments (F0♂ × F2♀ and F2♂ × F2♀) revealed that all chickens had the blue-eggshell and dwarf traits, supporting that the obtained F2 strain was pure. In summary, for the first time, we successfully bred a pure strain chicken with blue-eggshell and dwarf traits by jointly using the molecular markers of the SLCO1B3 and GHR genes. Our study provides a new method for the rapid cultivation of new chicken strains.
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Affiliation(s)
- H X Cui
- Institute of Animal Sciences, Chinese Academy of Agricultural Science, Beijing 100193, China
| | - Q C Shen
- Guangxi Chinese chicken genetic resources, Guangxi Jinling Agriculture and Animal Husbandry Group Co., Ltd, Nanning 530049, China
| | - M Q Zheng
- Institute of Animal Sciences, Chinese Academy of Agricultural Science, Beijing 100193, China
| | - Y C Su
- Guangxi Chinese chicken genetic resources, Guangxi Jinling Agriculture and Animal Husbandry Group Co., Ltd, Nanning 530049, China
| | - R C Cai
- Guangxi Chinese chicken genetic resources, Guangxi Jinling Agriculture and Animal Husbandry Group Co., Ltd, Nanning 530049, China
| | - Y Yu
- Guangxi Chinese chicken genetic resources, Guangxi Jinling Agriculture and Animal Husbandry Group Co., Ltd, Nanning 530049, China
| | - X R Yang
- College of Animal Science and Technology, Guangxi University, Nanning 530004, China
| | - Z W Chen
- Guangxi Chinese chicken genetic resources, Guangxi Jinling Agriculture and Animal Husbandry Group Co., Ltd, Nanning 530049, China
| | - J Wen
- Institute of Animal Sciences, Chinese Academy of Agricultural Science, Beijing 100193, China
| | - G P Zhao
- Institute of Animal Sciences, Chinese Academy of Agricultural Science, Beijing 100193, China
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Lin CH, Lin W, Su YC, Cheng-Yo Hsuan Y, Chen YC, Chang CP, Chou W, Lin KC. Modulation of parietal cytokine and chemokine gene profiles by mesenchymal stem cell as a basis for neurotrauma recovery. J Formos Med Assoc 2019; 118:1661-1673. [PMID: 30709695 DOI: 10.1016/j.jfma.2019.01.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Revised: 01/07/2019] [Accepted: 01/11/2019] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND & PURPOSE Following traumatic brain injury (TBI), primary mechanical injury to the brain may cause blood-brain-barrier damage followed by secondary injury, ultimately culminating in cell death. We aimed to test whether one injection of mesenchymal stem cells (MSC) derived from the human umbilical cord can modulate brain cytokine and chemokine gene profiles and attenuate neurological injury in rats with TBI. METHODS One-day post-TBI, the injured rats were treated with one injection of MSC (4 × 106/rat, i.v.). Three days later, immediately after assessment of neurobehavioral function, animals were sacrificed for analysis of neurological injury (evidenced by both brain contusion volume and neurological deficits) and parietal genes encoding 84 cytokines and chemokines in the injured brain by qPCR methods. RESULTS Three days post-TBI, rats displayed both neurological injury and upgrade of 11 parietal genes in the ipsilateral brain. One set of 8 parietal genes (e.g., chemokine [C-X-C motif] ligand 12, platelet factor 4, interleukin-7, chemokine [C-C motif] ligand (CCL)19, CCL 22, secreted phosphoprotein 1, pro-platelet basic protein 1, and CCL 2) differentially upgraded by TBI was related to pro-inflammatory and/or neurodegenerative processes. Another set of 3 parietal genes up-graded by TBI (e.g., glucose-6-phosphate isomerase, bone morphogenetic protein (BMP) 2, and BMP 4) was related to anti-inflammatory/neuroregenerative events. Administration of MSC attenuated neurological injury, down-regulated these 8 parietal pro-inflammatory genes, and up-regulated these 3 parietal anti-inflammatory genes in the rats with TBI. CONCLUSION Our data suggest that modulation of parietal cytokines and chemokines gene profiles by MSC as a basis for neurotrauma recovery.
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Affiliation(s)
- Cheng-Hsien Lin
- Department of Medicine, Mackay Medical College, New Taipei City 252, Taiwan.
| | - Willie Lin
- Meridigen Biotech Co. Ltd., Neihu, Taipei 11493, Taiwan.
| | - Yu-Chin Su
- Meridigen Biotech Co. Ltd., Neihu, Taipei 11493, Taiwan.
| | | | - Yu-Chien Chen
- Department of Medical Research, Chi Mei Medical Center, Tainan 710, Taiwan.
| | - Ching-Ping Chang
- Department of Medical Research, Chi Mei Medical Center, Tainan 710, Taiwan.
| | - Willy Chou
- Department of Physical Medicine and Rehabilitation, Chi Mei Medical Center, Tainan 710, Taiwan; Department of Recreation and Healthcare Management, Chia Nan University of Pharmacy and Science, Tainan 717, Taiwan.
| | - Kao-Chang Lin
- Department of Neurology, Chi Mei Medical Center, Tainan 710, Taiwan.
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Chen GC, Chen PY, Su YC, Hsiao CL, Yang FY, Hsu PJ, Lin SK. Vascular, Cognitive, and Psychomental Survey on Elderly Recycling Volunteers in Northern Taiwan. Front Neurol 2019; 9:1176. [PMID: 30687225 PMCID: PMC6338017 DOI: 10.3389/fneur.2018.01176] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Accepted: 12/20/2018] [Indexed: 12/01/2022] Open
Abstract
Background: Stroke and dementia represent frequent causes of psychophysical and socioeconomic burdens. We conducted a vascular, cognitive, and psychomental survey involving elderly volunteers at community-based recycling stations in Northern Taiwan. Methods: Recycling volunteers aged ≥60 years were surveyed. We recorded seven parameters, namely (1) body mass index (BMI), (2) fasting glucose, (3) fasting cholesterol, (4) ankle-brachial index (ABI), (5) carotid duplex sonography, (6) five-item Brief Symptom Rating Scale (BSRS-5) score, and (7) eight-item Interview to Differentiate Aging and Dementia (AD8). During the carotid duplex study, we measured the carotid intima-media thickness (CIMT) and the carotid total plaque score (CTPS) of the common and internal carotid arteries. Results: In total, 985 subjects (mean age: 70.8 years) participated in this study. Among these, 81% were women, and 52% were vegetarians. The average ABI, CIMT, and CTPS were higher in men, whereas women had higher cholesterol levels and BSRS-5 scores. Obesity, hypertension, hyperglycemia, and hyperlipidemia were present in 21, 38, 9, and 27% of all subjects, respectively. Carotid plaques with mild (CTPS 1–5), moderate (CTPS 5.1–10), and severe (CTPS > 10) atherosclerosis were detected in 45, 16, and 7% of the subjects, respectively. Mild cognitive impairment (AD8 > 2) was observed in 13% of the subjects, whereas moderate mood disorder (BSRS-5≧10) was observed in only 1% of subjects. Vegetarians had a lower BMI, systolic blood pressure (SBP), cholesterol, CIMT, and CTPS than did non-vegetarians. Substantial predictors of severe atherosclerosis were advanced age (>70 years), male sex, history of heart disease, hyperlipidemia, and currently elevated SBP and cholesterol levels. Predictors of mild cognitive impairment were illiteracy, history of hypertension, hyperlipidemia, and moderate mood disorder. Conclusions: Subclinical carotid atherosclerosis was common in elderly recycling volunteers, with 23% having moderate to severe stenosis. Vegetarians had a reduced risk of atherosclerosis. The low incidence of moderate mood disorder might indicate that recycling work enhances psychomental health. In addition, a healthier lifestyle, better mood condition, and vegetarian diet might contribute to lower incidence of mild cognitive impairment.
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Affiliation(s)
- Guei-Chiuan Chen
- Stroke Center and Department of Neurology, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City, Taiwan
| | - Pei-Ya Chen
- Stroke Center and Department of Neurology, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City, Taiwan
| | - Yu-Chin Su
- Stroke Center and Department of Neurology, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City, Taiwan.,School of Medicine, Tzu Chi University, Hualien, Taiwan
| | - Cheng-Lun Hsiao
- Stroke Center and Department of Neurology, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City, Taiwan
| | - Fu-Yi Yang
- Stroke Center and Department of Neurology, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City, Taiwan
| | - Po-Jen Hsu
- Stroke Center and Department of Neurology, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City, Taiwan
| | - Shinn-Kuang Lin
- Stroke Center and Department of Neurology, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City, Taiwan.,School of Medicine, Tzu Chi University, Hualien, Taiwan
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Lin W, Hsuan YCY, Lin MT, Kuo TW, Lin CH, Su YC, Niu KC, Chang CP, Lin HJ. Human Umbilical Cord Mesenchymal Stem Cells Preserve Adult Newborn Neurons and Reduce Neurological Injury after Cerebral Ischemia by Reducing the Number of Hypertrophic Microglia/Macrophages. Cell Transplant 2018; 26:1798-1810. [PMID: 29338384 PMCID: PMC5784525 DOI: 10.1177/0963689717728936] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Microglia are the first source of a neuroinflammatory cascade, which seems to be involved in every phase of stroke-related neuronal damage. Two weeks after transient middle cerebral artery occlusion (MCAO), vehicle-treated rats displayed higher numbers of total ionized calcium-binding adaptor molecule 1 (Iba-1)-positive cells, greater cell body areas of Iba-1-positive cells, and higher numbers of hypertrophic Iba-1-positive cells (with a cell body area over 80 μm2) in the ipsilateral ischemic brain regions including the frontal cortex, striatum, and parietal cortex. In addition, MCAO decreased the number of migrating neuroblasts (or DCX- and 5-ethynyl-2′-deoxyuridine-positive cells) in the cortex, subventricular zone, and hippocampus of the ischemic brain, followed by neurological injury (including brain infarct and neurological deficits). Intravenous administration of human umbilical cord–derived mesenchymal stem cells (hUC-MSCs; 1 × 106 or 4 × 106) at 24 h after MCAO reduced neurological injury, decreased the number of hypertrophic microglia/macrophages, and increased the number of newborn neurons in rat brains. Thus, the accumulation of hypertrophic microglia/macrophages seems to be detrimental to neurogenesis after stroke. Treatment with hUC-MSCs preserved adult newborn neurons and reduced functional impairment after transient cerebral ischemia by reducing the number of hypertrophic microglia/macrophages.
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Affiliation(s)
- Willie Lin
- 1 Meridigen Biotech Co., Ltd., Neihu, Taipei City, Taiwan
| | | | - Mao-Tsun Lin
- 2 Department of Medical Research, Chi Mei Medical Center, Tainan City, Taiwan
| | - Ting-Wei Kuo
- 3 Department of Biotechnology, Southern Taiwan University of Science and Technology, Tainan City, Taiwan
| | | | - Yu-Chin Su
- 1 Meridigen Biotech Co., Ltd., Neihu, Taipei City, Taiwan
| | - Ko-Chi Niu
- 4 Department of Hyperbaric Oxygen, Chi Mei Medical Center, Tainan City, Taiwan
| | - Ching-Ping Chang
- 2 Department of Medical Research, Chi Mei Medical Center, Tainan City, Taiwan.,3 Department of Biotechnology, Southern Taiwan University of Science and Technology, Tainan City, Taiwan.,5 The Ph.D. Program for Neural Regenerative Medicine, Taipei Medical University, Taipei City, Taiwan
| | - Hung-Jung Lin
- 3 Department of Biotechnology, Southern Taiwan University of Science and Technology, Tainan City, Taiwan.,6 Department of Emergency Medicine, Chi Mei Medical Center, Tainan City, Taiwan
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12
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Hsiao CL, Su YC, Yang FY, Liu CY, Chiang HL, Chen GC, Hsu PJ, Chen PY, Lin SK. Impact of code stroke on thrombolytic therapy in patients with acute ischemic stroke at a secondary referral hospital in Taiwan. J Chin Med Assoc 2018; 81:942-948. [PMID: 30197114 DOI: 10.1016/j.jcma.2018.06.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Revised: 03/21/2018] [Accepted: 04/23/2018] [Indexed: 11/21/2022] Open
Abstract
BACKGROUND Efficacy of thrombolytic therapy decreases with time elapsed from symptom onset. We sought to identify the impact of code stroke on the thrombolytic therapy. METHODS Code stroke is activated by the emergency physician when a patient is eligible for thrombolytic therapy. We retrospectively reviewed patients with acute ischemic stroke between January 2011 and December 2014. RESULTS In total, 1809 patients were enrolled. Code stroke was activated in 233 of 351 patients arriving at the emergency room (ER) within 3 h of symptom onset, and in 21 patients arriving >3 h. The sensitivity, specificity, and positive and negative predictive values of code stroke were 76%, 46%, 72%, and 51%, respectively. Thrombolytic therapy was provided to 58 patients, accounting for 3.4% of all cerebral infarcts. Code stroke was activated in 40 of these patients. The most common reasons for excluding thrombolytic therapy were: National Institute of Health Stroke Scale (NIHSS) < 6, intracranial hemorrhage (ICH), and age >80 years. Mean liaison-to-neurological evaluation time was only 6 min. Code stroke activation significantly reduced all the intervals, except for the onset-to-ER and door-to-order times. During the 4-year study period, there were significant reductions of the door-to-neurology liaison time by 28 min and door-to-laboratory time by 22 min. The proportion of door-to-needle time within 60 min improved from 33% in 2011 to 67% in 2014. Improved NIHSS scores during hospitalization were most prominent in tPA-treated patients. Symptomatic ICH occurred in 3.6% patients arriving within 3 h. Death occurred in 50% of patients received tPA treatment on family's request, and only 13% of those patients had favorable outcome. CONCLUSION Code stroke is effective in reducing in-hospital delays. The accuracy of code stroke activation has acceptable sensitivity but low specificity. Rapid patient assessment by neurologists increases the number of patients eligible for thrombolytic therapy.
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Affiliation(s)
- Cheng-Lun Hsiao
- Stroke Center and Department of Neurology, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City, Taiwan, ROC
| | - Yu-Chin Su
- Stroke Center and Department of Neurology, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City, Taiwan, ROC; School of Medicine, Tzu Chi University, Hualien, Taiwan, ROC
| | - Fu-Yi Yang
- Stroke Center and Department of Neurology, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City, Taiwan, ROC
| | - Chih-Yang Liu
- Stroke Center and Department of Neurology, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City, Taiwan, ROC
| | - Han-Lin Chiang
- Stroke Center and Department of Neurology, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City, Taiwan, ROC; School of Medicine, Tzu Chi University, Hualien, Taiwan, ROC
| | - Guei-Chiuan Chen
- Stroke Center and Department of Neurology, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City, Taiwan, ROC
| | - Po-Jen Hsu
- Stroke Center and Department of Neurology, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City, Taiwan, ROC
| | - Pei-Ya Chen
- Stroke Center and Department of Neurology, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City, Taiwan, ROC
| | - Shinn-Kuang Lin
- Stroke Center and Department of Neurology, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City, Taiwan, ROC; School of Medicine, Tzu Chi University, Hualien, Taiwan, ROC.
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13
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Chu DG, Su YC, Li YN, Zhang WW, Lyu TM, Wang LD. [Clinical applications of transcrestal around detached sinus floor elevation technique using osteotomes and sequential drills with stops]. Zhonghua Kou Qiang Yi Xue Za Zhi 2018; 53:645-647. [PMID: 30196629 DOI: 10.3760/cma.j.issn.1002-0098.2018.09.016] [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
Sinus floor elevation was needed in 11 patients having 15 implant sites with the residual bone height (RBH) was less than 10 mm in the posterior maxillary region from Feb to May 2017. The RBH ranged from 3.10 to 8.34 mm [averaged (6.18±1.60) mm]. RBH<6 mm was observed in 40% implant sites (6 implant sites) and RBH≥6 mm was observed in 60% implant sites (9 implant sites). The thickness of the sinus floor membrane correspond to the implant site measured by cone beam CT (CBCT) ranged from 0.50 to 4.24 mm [averaged (1.21±0.92) mm]. Sequential drills with stops were used to perforate the cortical bone of the sinus floor firstly, then the transcrestal around detached sinus floor elevation technique (TADSFET) was carried with osteotomes. Anorganic bovine bone was used as the augmentation material.Fifteen implants were placed in 15 implant sites. CBCT pictures showed that there was a smooth and continuous tent-shaped apophysis on each lifted site and no air fluid level was observed in the sinus immediately after operation. The mean elevated height of the 15 implant sites was (7.83±1.57) mm (ranged from 5.94 to 11.01 mm). The mean follow-up time was 7.91 months (7-10 months). The survival rate was 100% during the follow up period.
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Affiliation(s)
- D G Chu
- Departmant of Stomatology, ChuiYangLiu Hospital Affliated to Tsinghua University, Beijing 100022, China
| | - Y C Su
- Department of Stomatology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100032, China
| | - Y N Li
- Departmant of Stomatology, ChuiYangLiu Hospital Affliated to Tsinghua University, Beijing 100022, China (Present address: Department of Stomatology, Yantai Stomatological Hospital Affiliated to Binzhou Medical College, Yantai Shandong 264000, China)
| | - W W Zhang
- Departmant of Stomatology, ChuiYangLiu Hospital Affliated to Tsinghua University, Beijing 100022, China (Present address: Department of Stomatology, Beijing Jingbei Jianyong Stomatological Hospital, Beijing 101400, China)
| | - T M Lyu
- Departmant of Stomatology, ChuiYangLiu Hospital Affliated to Tsinghua University, Beijing 100022, China
| | - L D Wang
- Departmant of Stomatology, ChuiYangLiu Hospital Affliated to Tsinghua University, Beijing 100022, China
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14
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Hsu FT, Wei ZH, Hsuan YCY, Lin W, Su YC, Liao CH, Hsieh CL. MRI tracking of polyethylene glycol-coated superparamagnetic iron oxide-labelled placenta-derived mesenchymal stem cells toward glioblastoma stem-like cells in a mouse model. Artif Cells Nanomed Biotechnol 2018; 46:S448-S459. [PMID: 30198338 DOI: 10.1080/21691401.2018.1499661] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Mesenchymal stem cells (MSCs) that display homing and infiltration properties towards tumor cells are a promising cellular targeting vector for brain tumor therapy but are limited to local-regional delivery in current preclinical models. Here, we investigated whether placenta-derived MSCs (P-MSCs) are a superior cellular vector for systemic targeting of glioblastoma stem-like cells (GSCs), with an imaging modality to real-time monitor the trafficking P-MSCs to glioblastoma sites. Results demonstrated that P-MSCs had greater migratory activity towards GSCs and across blood-brain barrier compared with bone marrow-derived MSCs, and this activity was enhanced by hypoxia precondition. Chemokine ligand 5 was identified as a chemoattractant responsible for the glioblastoma tropism of P-MSCs. Polyethylene glycol-coated superparamagnetic iron oxide (PEG-SPIO) was synthesized for cellular labelling and imaging P-MSCs, displaying high cellular uptake and no cytotoxic effect on P-MSCs cell proliferation or stemness property. The homing effects of intravenously administered PEG-SPIO-labelled P-MSCs towards intracerebral GSCs were able to be detected in mice models through T2-weighted magnetic resonance imaging (MRI). This study suggests the possibility of innovative systemic P-MSC-based cell therapy for aggressive GSCs, developing a state-of-the-art theranostic technique for real-time tracking of therapeutic P-MSCs tumor infiltration through cellular MRI.
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Affiliation(s)
- Fei-Ting Hsu
- a Department of Radiology , School of Medicine, College of Medicine, Taipei Medical University , Taipei , Taiwan.,b Department of Biological Science and Technology , China Medical University , Taichung , Taiwan.,c Department of Medical Imaging , Taipei Medical University Hospital , Taipei , Taiwan.,d Research Center of Translational Imaging , College of Medicine, Taipei Medical University , Taipei , Taiwan
| | - Zung-Hang Wei
- e Department of Power Mechanical Engineering , National Tsing Hua University , Hsinchu , Taiwan
| | | | - Willie Lin
- f Meridigen Biotech Co., Ltd. , Neihu, Taipei City , Taiwan
| | - Yu-Chin Su
- f Meridigen Biotech Co., Ltd. , Neihu, Taipei City , Taiwan
| | - Chia-Hui Liao
- g The PhD Program for Translational Medicine , College of Medical Science and Technology, Taipei Medical University , Taipei , Taiwan
| | - Chia-Ling Hsieh
- g The PhD Program for Translational Medicine , College of Medical Science and Technology, Taipei Medical University , Taipei , Taiwan.,h Clinical Research Center , Taipei Medical University Hospital, Taipei Medical University , Taipei , Taiwan.,i TMU Research Center of Cancer Translational Medicine , Taipei Medical University , Taipei , Taiwan
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15
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Yang MQ, Yang CM, Zhu Y, Chen QW, Mao TX, Hsiao FC, Su YC, Yao Y, Dong QL, Luo LX, Ji YR, Wang YY, Zhou GF. 0145 The Acute Effects of Intermittent Light Exposure in The Evening on Alertness and Subsequent Sleep Architecture. Sleep 2018. [DOI: 10.1093/sleep/zsy061.144] [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: 11/12/2022] Open
Affiliation(s)
- M Q Yang
- School of Psychology, South China Normal University, Guangzhou, CHINA
| | - C M Yang
- Department of Psychology, National Chengchi University, Taipei, TAIWAN
| | - Yy Zhu
- School of Psychology, South China Normal University, Guangzhou, CHINA
| | - Q W Chen
- School of Psychology, South China Normal University, Guangzhou, CHINA
| | - T X Mao
- School of Psychology, South China Normal University, Guangzhou, CHINA
| | - F C Hsiao
- Department of Psychology, National Chengchi University, Taipei, TAIWAN
| | - Y C Su
- Department of Psychology, National Chengchi University, Taipei, CHINA
| | - Y Yao
- School of Psychology, South China Normal University, Guangzhou, CHINA
| | - Q L Dong
- School of Psychology, South China Normal University, Guangzhou, CHINA
| | - L X Luo
- School of Psychology, South China Normal University, Guangzhou, CHINA
| | - Y R Ji
- School of Psychology, South China Normal University, Guangzhou, CHINA
| | - Y Y Wang
- School of Psychology, South China Normal University, Guangzhou, CHINA
| | - G F Zhou
- National Center for International Research on Green Optoelectronics, South China Normal University, Guangzhou, CHINA
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16
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Su YC, Reshi L, Chen LJ, Li WH, Chiu HW, Hong JR. Nuclear targeting of the betanodavirus B1 protein via two arginine-rich domains induces G1/S cell cycle arrest mediated by upregulation of p53/p21. Sci Rep 2018; 8:3079. [PMID: 29449573 PMCID: PMC5814437 DOI: 10.1038/s41598-018-21340-x] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Accepted: 02/02/2018] [Indexed: 12/20/2022] Open
Abstract
The molecular functions of betanodavirus non-structural protein B and its role in host cell survival remain unclear. In the present study, we examined the roles of specific nuclear targeting domains in B1 localization as well as the effect of B1 nuclear localization on the cell cycle and host cell survival. The B1 protein of the Red spotted grouper nervous necrosis virus (RGNNV) was detected in GF-1 grouper cells as early as 24 hours post-infection (hpi). Using an EYFP-B1 fusion construct, we observed nuclear localization of the B1 protein (up to 99%) in GF-1 cells at 48 hpi. The nuclear localization of B1 was mediated by two arginine-rich nuclear targeting domains (B domain: 46RRSRR51; C domain: 63RDKRPRR70) and domain C was more important than domain B in this process. B1 nuclear localization correlated with upregulation of p53 and p21(wef1/cip1); downregulation of Cyclin D1, CDK4 and Mdm2; and G1/S cell cycle arrest in GF-1 cells. In conclusion, nuclear targeting of the RGNNV B1 protein via two targeting domains causes cell cycle arrest by up-regulating p53/p21 and down-regulating Mdm2, thereby regulating host cell survival.
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Affiliation(s)
- Yu-Chin Su
- Laboratory of Molecular Virology and Biotechnology, Institute of Biotechnology, National Cheng Kung University, Tainan, 701, Taiwan
| | - Latif Reshi
- Laboratory of Molecular Virology and Biotechnology, Institute of Biotechnology, National Cheng Kung University, Tainan, 701, Taiwan.,Department of Life Science, College of Bioscience & Biotechnology, National Cheng Kung University, Tainan, 701, Taiwan
| | - Lei-Jia Chen
- Laboratory of Molecular Virology and Biotechnology, Institute of Biotechnology, National Cheng Kung University, Tainan, 701, Taiwan
| | - Wei-Han Li
- Laboratory of Molecular Virology and Biotechnology, Institute of Biotechnology, National Cheng Kung University, Tainan, 701, Taiwan
| | - Hsuan-Wen Chiu
- Laboratory of Molecular Virology and Biotechnology, Institute of Biotechnology, National Cheng Kung University, Tainan, 701, Taiwan
| | - Jiann-Ruey Hong
- Laboratory of Molecular Virology and Biotechnology, Institute of Biotechnology, National Cheng Kung University, Tainan, 701, Taiwan. .,Department of Biotechnology and Bioindustry, National Cheng Kung University, Tainan, 701, Taiwan.
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17
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Wang IK, Liu CH, Yen TH, Jeng JS, Sung SF, Huang PH, Li JY, Sun Y, Wei CY, Lien LM, Tsai IJ, Sung FC, Hsu CY, Liu CH, Tsai CH, Huang WS, Lu CT, Tsai TC, Tseng CH, Lin KH, Shyu WC, Yang YW, Liu YL, Cho DY, Chen CC, Jeng JS, Tang SC, Tsai LK, Yeh SJ, Chen CH, Tsai HH, Li JY, Chen HJ, Lu K, Hsu SP, Kuo HC, Tsou JC, Wang YT, Tai YC, Hsieh MT, Liliang PC, Liang CL, Wang HK, Tsai YT, Wang KW, Chen JS, Chen PY, Wang YC, Chen CH, Sung PS, Hsieh HC, Su HC, Chiu HC, Lien LM, Chen WH, Bai CH, Huang TH, Lau CI, Wu YY, Yeh HL, Chang A, Lin CH, Yen CC, Lin RT, Chen CH, Khor GT, Chao AC, Lin HF, Huang P, Lin HJ, Ke DS, Chang CY, Yeh PS, Lin KC, Cheng TJ, Chou CH, Yang CM, Shen HC, Chen AC, Tsai SJ, Lu TM, Kung SL, Lee MJ, Chou HH, Chang WL, Chiu PY, Hsu MH, Chan PC, Pan CH, Shoung HM, Lo YC, Wang FH, Chang WC, Lai TC, Yin JH, Wang CJ, Wang KC, Chen LM, Denq JC, Sun Y, Lu CJ, Lin CH, Huang CC, Liu CH, Chan HF, Lee SP, Sun MH, Ke LY, Chen PL, Lee YS, Sung SF, Ong CT, Wu CS, Hsu YC, Su YH, Hung LC, Lee JT, Lin JC, Hsu YD, Denq JC, Peng GS, Hsu CH, Lin CC, Yen CH, Cheng CA, Sung YF, Chen YL, Lien MT, Chou CH, Liu CC, Yang FC, Wu YC, Tso AC, Lai YH, Chiang CI, Tsai CK, Liu MT, Lin YC, Hsu YC, Chiang TR, Huang PH, Liao PW, Lee MC, Chen JT, Lie SK, Sun MC, Hsiao PJ, Chen WL, Chen TC, Chang CS, Lai CH, Chuang CS, Chen YY, Lin SK, Su YC, Shiao JL, Yang FY, Liu CY, Chiang HL, Chen GC, Hsu PJ, Chang CY, Lin IS, Chien CH, Chang YC, Chen PK, Chiu PY, Hsiao YJ, Fang CW, Chen YW, Lee KY, Lin YY, Li CH, Tsai HF, Hsieh CF, Yang CD, Liaw SJ, Liao HC, Yeh SJ, Wu LL, Hsieh LP, Lee YH, Chen CW, Hsu CS, Jhih YJ, Zhuang HY, Pan YH, Shih SA, Chen CI, Sung JY, Weng HY, Teng HW, Lee JE, Huang CS, Chao SP, Yuan RY, Sheu JJ, Yu JM, Ho CS, Lin TC, Yu SC, Chen JR, Tsai SY, Wei CY, Hung CH, Lee CF, Yang SK, Chen CL, Lin W, Tseng HP, Liu CH, Lin CL, Lin HC, Chen PT, Hu CJ, Chan L, Chi NF, Chern CM, Lin CJ, Wang SJ, Hsu LC, Wong WJ, Lee IH, Yen DJ, Tsai CP, Kwan SY, Soong BW, Chen SP, Liao KK, Lin KP, Chen C, Shan DE, Fuh JL, Wang PN, Lee YC, Yu YH, Huang HC, Tsai JY, Wu MH, Chiang SY, Wang CY, Hsu MC, Chen CC, Yeh PY, Tsai YT, Wang KY, Chen TS, Hsieh CY, Chen WF, Yip PK, Wang V, Wang KC, Tsai CF, Chen CC, Chen CH, Liu YC, Chen SY, Zhao ZH, Wei ZP, Wu SL, Liu CK, Lin RH, Chu CH, Yan SH, Lin YC, Chen PY, Hsiao SH, Yip BS, Tsai PC, Chou PC, Kuo TM, Lee YC, Chiu YP, Tsai KC, Liao YS, Tsai MJ, Kao HY. Renal function is associated with 1-month and 1-year mortality in patients with ischemic stroke. Atherosclerosis 2018; 269:288-293. [PMID: 29254692 DOI: 10.1016/j.atherosclerosis.2017.11.029] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/12/2017] [Revised: 10/26/2017] [Accepted: 11/29/2017] [Indexed: 10/18/2022]
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18
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Lin W, Hsuan YCY, Su YC, Lin CH, Lin MT, Chen ZH, Chang CP, Lin KC. CD34 - human placenta-derived mesenchymal stem cells protect against heat stroke mortality in rats. Oncotarget 2017; 9:1992-2001. [PMID: 29416747 PMCID: PMC5788615 DOI: 10.18632/oncotarget.23324] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Accepted: 12/09/2017] [Indexed: 01/01/2023] Open
Abstract
CD34 is a transmembrane phosphoglycoprotein used to selectively enrich bone marrow in hematopoietic stem cells for transplantation. Treating rats with CD34+ cells derived from human umbilical cord blood before or after heat stroke has been shown to promote survival. We investigated whether CD34– human placenta-derived stem cells (PDMSCs) could improve survival following heat stroke in rats. Rats were subjected to heat stress (42°C for 98 min) to induce heat stroke. Intravenous administration of PDMSCs 1 day before or immediately after the onset of heat stroke improved survival by 60% and 20%, respectively. Pre-treatment with CD34− PDMSCs protected against heat stroke injury more effectively than that treatment after injury. PDMSCs treatment attenuated cerebrovascular dysfunction, the inflammatory response, and lipid peroxidation. These data suggest human PDMSCs protect against heat stroke injury in rats. Moreover, these effects do not require the presence of CD34+ cells.
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Affiliation(s)
- Willie Lin
- Meridigen Biotech Co., Ltd., Taipei, Taiwan
| | | | - Yu-Chin Su
- Meridigen Biotech Co., Ltd., Taipei, Taiwan
| | | | - Mao-Tsun Lin
- Department of Medical Research, Chi Mei Medical Center, Tainan, Taiwan
| | - Zi-Hao Chen
- Institute of Molecular Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan.,Department of Biotechnology, Southern Taiwan University of Science and Technology, Tainan, Taiwan
| | - Ching-Ping Chang
- Department of Medical Research, Chi Mei Medical Center, Tainan, Taiwan.,Department of Biotechnology, Southern Taiwan University of Science and Technology, Tainan, Taiwan.,The Ph.D. Program for Neural Regenerative Medicine, Taipei Medical University, Taipei, Taiwan
| | - Kao-Chang Lin
- Department of Biotechnology, Southern Taiwan University of Science and Technology, Tainan, Taiwan.,Department of Neurology, Chi Mei Medical Center, Tainan, Taiwan
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Chiu HW, Su YC, Hong JR. Betanodavirus B2 protein triggers apoptosis and necroptosis in lung cancer cells that suppresses autophagy. Oncotarget 2017; 8:94129-94141. [PMID: 29212215 PMCID: PMC5706861 DOI: 10.18632/oncotarget.21588] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Accepted: 09/21/2017] [Indexed: 11/25/2022] Open
Abstract
The betanodavirus B2 protein targets the mitochondria and acts as a "death factor", but its effect on lung cancer cells is unknown. We examined the effect of the B2 protein on triggering apoptosis or necroptosis via P53-dependent and P53-independent pathways and increased in suppression of autophagy. The B2 protein targets the mitochondria of A549 (P53+/+) and H1299 (P53-/-) lung cancer cells due to a specific signal sequence (41RTFVISAHAA50). This triggers generation of reactive oxygen species within the mitochondria, and a minor stress response in A549 cells, but a strong stress response in H1299 cells. We examined the molecular mechanism of this cell death pathway, and found that B2 protein induces the P53/Bax-mediated apoptotic pathway in A549 cells, and that a P53 specific inhibitor (pifithrin-α) switches this response to RIP3-mediated necroptosis. On the other hand, B2 induces RIP3-mediated necroptosis pathway in H1299 cells, and a necroptosis inhibitor (necrostatin-1) switches this response to the apoptotic pathway. Both types of cell death signals inhibited autophagy via a tightly increased balance of beclin-1 and Bcl-2. Thus, B2 protein triggers P53-dependent apoptosis in A549 cells and ROS/RIP3-mediated necroptosis in H1299 cells, and crosstalk of these pathways limits initiation of autophagy. These findings provide new insights into the possible control and treatment of lung cancer.
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Affiliation(s)
- Hsuan-Wen Chiu
- Department of Biotechnology and Bioindustry, Laboratory of Molecular Virology and Biotechnology, Institute of Biotechnology, National Cheng Kung University, Tainan 701, Taiwan
| | - Yu-Chin Su
- Department of Biotechnology and Bioindustry, Laboratory of Molecular Virology and Biotechnology, Institute of Biotechnology, National Cheng Kung University, Tainan 701, Taiwan
| | - Jiann-Ruey Hong
- Department of Biotechnology and Bioindustry, Laboratory of Molecular Virology and Biotechnology, Institute of Biotechnology, National Cheng Kung University, Tainan 701, Taiwan
- Department of Biotechnology and Bioindustry, National Cheng Kung University, Tainan 701, Taiwan
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Su YC, Di JX, Da JP. [Clinicopathologic features of atypical type A thymoma]. Zhonghua Bing Li Xue Za Zhi 2017; 46:314-317. [PMID: 28468036 DOI: 10.3760/cma.j.issn.0529-5807.2017.05.006] [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 study the clinicopathologic features, immunophenotype and differential diagnosis of atypical type A thymoma. Methods: Clinicopathologic and follow-up data of three cases of atypical type A thymoma from 2004 to 2016 were reviewed. Immunohistochemical staining was performed. Results: All three patients were male with average age of 59 years. Clinically, the lesions presented as anterior mediastinal masses. Grossly, the tumor ranged in size from 4 to 6 cm in greatest dimension and partially enclosed within fibrous capsule. The cut surface was homogenously fleshy, tan to brown in color, with multinodular and lobulated configurations. Cystic changes and necrosis were seen. Microscopically, the tumor was composed of plump spindle or oval-shaped cells arranged in storiform, microcystic, glandular, rosettes-like and hemangiopericytoma-like histological patterns. The tumor cells showed mild cytological atypia and mitotic activity ranged from 4 to 5/10HPF. Necrosis was present in all tumors. All tumors showed diffuse CK(AE1/AE3), CK19, p63 and vimentin expression. TdT, CK20, CD20, CD5 and CD117 were negative. The proliferative index, as measured with Ki-67, was 15.2% to 26.4%. None of the cases had recurrence or metastases during the follow-up period (9 to 27 months). Conclusions: Atypical type A thymoma presents atypical features including tumor necrosis and increased mitotic activity. However, the implications of such atypical features to the biological behavior of the tumor remain to be determined.
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Affiliation(s)
- Y C Su
- Department of Pathology, China-Japan Friendship Hospital, Beijing 100029, China
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Su YC, Lim SN, Yang FY, Lin SK. Evaluation of cerebral blood flow in acute ischemic stroke patients with atrial fibrillation: A sonographic study. J Formos Med Assoc 2017; 116:287-294. [DOI: 10.1016/j.jfma.2016.05.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Revised: 04/22/2016] [Accepted: 05/16/2016] [Indexed: 11/30/2022] Open
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22
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Reshi L, Wang HV, Hui CF, Su YC, Hong JR. Anti-apoptotic genes Bcl-2 and Bcl-xL overexpression can block iridovirus serine/threonine kinase-induced Bax/mitochondria-mediated cell death in GF-1 cells. Fish Shellfish Immunol 2017; 61:120-129. [PMID: 28025159 DOI: 10.1016/j.fsi.2016.12.026] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [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: 11/02/2016] [Revised: 12/13/2016] [Accepted: 12/22/2016] [Indexed: 06/06/2023]
Abstract
Although serine/threonine (ST) kinase is known to induce host cell death in GF-1 cells, it remains unclear how ST kinase induces mitochondrial function loss. In the present study, we addressed the issue of mitochondrial function loss by determining whether the Bcl-2 family members Bcl-2 and Bcl-xL can prevent ST kinase-induced cell death activity via interacting with the pro-apoptotic gene Bax. Grouper fin cells (GF-1) carrying EGFP-Bal-xL and EGFP-Bcl-2 fused genes were selected, established in cell culture, and used to examine the involvement of Bcl-2 and Bcl-xL overexpression in protection of GF-1 cells from the effects of the giant sea perch iridovirus (GSIV) ST kinase gene. Using the TUNEL assay, we found that EGFP-Bcl-2 and EGFP-Bcl-xL reduced GSIV ST kinase-induced apoptosis to 20% all at 24 h and 48 h post-transfection (pt). Also, Bcl-2 and Bcl-xL substantially reduced the percentage of cells with GSIV ST kinase-induced loss of mitochondrial membrane potential (Δψps) at 24 and 48 hpt, respectively, and this reduction correlated with a 30% and 50% enhancement of host cell viability at 24 and 48 hpt as compared with vector control. Moreover, analysis of the effect of Bcl-2 and Bcl-xL interaction with Bax targeted to mitochondria during ST kinase expression at 48 hpt found that Bcl-2 and Bcl-xL also interacted with Bax to block cytochrome c release. Finally, Bcl-2 and Bcl-xL overexpression caused blockage of ST kinase function at 48 hpt, which was correlated with preventing caspase-9 and -3 cleavage and activation, thereby blocking downstream death signaling events. Taken together, our results suggest that the ST kinase-induced Bax/mitochondria-mediated cell death pathway can be blocked by the interaction of Bcl-2 and Bcl-xL with Bax to inhibit cytochrome c release during MMP loss. This rescue activity also correlated with inhibition of caspase-9 and -3 activation, thereby enhancing cell viability.
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Affiliation(s)
- Latif Reshi
- Lab of Molecular Virology and Biotechnology, Institute of Biotechnology, National Cheng Kung University, No. 1 University Road, Tainan City 701, Taiwan, ROC; Department of Life Sciences, College of Bioscience and Biotechnology, National Cheng Kung University, No. 1 University Road, Tainan City 701, Taiwan, ROC
| | - Hua-Ven Wang
- Department of Life Sciences, College of Bioscience and Biotechnology, National Cheng Kung University, No. 1 University Road, Tainan City 701, Taiwan, ROC
| | - Cho-Fat Hui
- Institute of Cellular and Organismic Biology, Academia Sinica, Nankang, Taipei 115, Taiwan, ROC
| | - Yu-Chin Su
- Lab of Molecular Virology and Biotechnology, Institute of Biotechnology, National Cheng Kung University, No. 1 University Road, Tainan City 701, Taiwan, ROC
| | - Jiann-Ruey Hong
- Lab of Molecular Virology and Biotechnology, Institute of Biotechnology, National Cheng Kung University, No. 1 University Road, Tainan City 701, Taiwan, ROC; Department of Biotechnology and Bioindustry, National Cheng Kung University, No. 1 University Road, Tainan City 701, Taiwan, ROC.
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23
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Tan CT, Zhou QL, Su YC, Fu NY, Chang HC, Tao RN, Sukumaran SK, Baksh S, Tan YJ, Sabapathy K, Yu CD, Yu VC. MOAP-1 Mediates Fas-Induced Apoptosis in Liver by Facilitating tBid Recruitment to Mitochondria. Cell Rep 2016; 16:174-185. [DOI: 10.1016/j.celrep.2016.05.068] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2016] [Revised: 04/08/2016] [Accepted: 05/17/2016] [Indexed: 12/11/2022] Open
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24
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Tsai LT, Hsu JL, Wu CT, Chen CC, Su YC. A New Visual Stimulation Program for Improving Visual Acuity in Children with Visual Impairment: A Pilot Study. Front Hum Neurosci 2016; 10:157. [PMID: 27148014 PMCID: PMC4834310 DOI: 10.3389/fnhum.2016.00157] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2015] [Accepted: 03/29/2016] [Indexed: 11/13/2022] Open
Abstract
The purpose of this study was to investigate the effectiveness of visual rehabilitation of a computer-based visual stimulation (VS) program combining checkerboard pattern reversal (passive stimulation) with oddball stimuli (attentional modulation) for improving the visual acuity (VA) of visually impaired (VI) children and children with amblyopia and additional developmental problems. Six children (three females, three males; mean age = 3.9 ± 2.3 years) with impaired VA caused by deficits along the anterior and/or posterior visual pathways were recruited. Participants received eight rounds of VS training (two rounds per week) of at least eight sessions per round. Each session consisted of stimulation with 200 or 300 pattern reversals. Assessments of VA (assessed with the Lea symbol VA test or Teller VA cards), visual evoked potential (VEP), and functional vision (assessed with the Chinese-version Functional Vision Questionnaire, FVQ) were carried out before and after the VS program. Significant gains in VA were found after the VS training [VA = 1.05 logMAR ± 0.80 to 0.61 logMAR ± 0.53, Z = -2.20, asymptotic significance (2-tailed) = 0.028]. No significant changes were observed in the FVQ assessment [92.8 ± 12.6 to 100.8 ±SD = 15.4, Z = -1.46, asymptotic significance (2-tailed) = 0.144]. VEP measurement showed improvement in P100 latency and amplitude or integration of the waveform in two participants. Our results indicate that a computer-based VS program with passive checkerboard stimulation, oddball stimulus design, and interesting auditory feedback could be considered as a potential intervention option to improve the VA of a wide age range of VI children and children with impaired VA combined with other neurological disorders.
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Affiliation(s)
- Li-Ting Tsai
- School of Occupational Therapy, College of Medicine, National Taiwan UniversityTaipei, Taiwan
- Occupational Therapy-Low Vision Rehabilitation, University of Alabama, BirminghamAL, USA
| | - Jung-Lung Hsu
- Section of Dementia and Cognitive Impairment, Department of Neurology, Chang Gung Memorial HospitalLinkou, Taiwan
- Graduate Institute of Humanities in Medicine, Taipei Medical UniversityTaipei, Taiwan
| | - Chien-Te Wu
- School of Occupational Therapy, College of Medicine, National Taiwan UniversityTaipei, Taiwan
| | - Chia-Ching Chen
- School of Medicine, National Yang-Ming UniversityTaipei, Taiwan
| | - Yu-Chin Su
- Stroke Center and Department of Neurology, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical FoundationNew Taipei City, Taiwan
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25
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Abstract
Background. Cardiac morbidities account for 20% of deaths after ischemic stroke and is the second commonest cause of death in acute stroke population. Elevation of cardiac troponin has been regarded as a prognostic biomarker of poor outcome in patients with acute stroke. Methods. This retrospective study enrolled 871 patients with acute ischemic stroke from August 2010 to March 2015. Data included vital signs, laboratory parameters collected in the emergency department, and clinical features during hospitalization. National Institutes of Health Stroke Scale (NIHSS), Barthel index, and modified Rankin Scale (mRS) were used to assess stroke severity and outcome. Results. Elevated troponin I (TnI) > 0.01 µg/L was observed in 146 (16.8%) patients. Comparing to patients with normal TnI, patients with elevated TnI were older (median age 77.6 years vs. 73.8 years), had higher median heart rates (80 bpm vs. 78 bpm), higher median white blood cells (8.40 vs. 7.50 1,000/m3) and creatinine levels (1.40 mg/dL vs. 1.10 mg/dL), lower median hemoglobin (13.0 g/dL vs. 13.7 g/dL) and hematocrit (39% vs. 40%) levels, higher median NIHSS scores on admission (11 vs. 4) and at discharge (8 vs. 3), higher median mRS scores (4 vs3) but lower Barthel index scores (20 vs. 75) at discharge (p < 0.001). Multivariate analysis revealed that age ≥ 76 years (OR 2.25, CI [1.59–3.18]), heart rate ≥ 82 bpm (OR 1.47, CI [1.05–2.05]), evidence of clinical deterioration (OR 9.45, CI [4.27–20.94]), NIHSS score ≥ 12 on admission (OR 19.52, CI [9.59–39.73]), and abnormal TnI (OR 1.98, CI [1.18–3.33]) were associated with poor outcome. Significant factors for in-hospital mortality included male gender (OR 3.69, CI [1.45–9.44]), evidence of clinical deterioration (OR 10.78, CI [4.59–25.33]), NIHSS score ≥ 12 on admission (OR 8.08, CI [3.04–21.48]), and elevated TnI level (OR 5.59, CI [2.36–13.27]). C-statistics revealed that abnormal TnI improved the predictive power of both poor outcome and in-hospital mortality. Addition of TnI > 0.01 ug/L or TnI > 0.1 ug/L to the model-fitting significantly improved c-statistics for in-hospital mortality from 0.887 to 0.926 (p = 0.019) and 0.927 (p = 0.028), respectively. Discussion. Elevation of TnI during acute stroke is a strong independent predictor for both poor outcome and in-hospital mortality. Careful investigation of possible concomitant cardiac disorders is warranted for patients with abnormal troponin levels.
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Affiliation(s)
- Yu-Chin Su
- Stroke Center and Department of Neurology, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation , New Taipei City , Taiwan
| | - Kuo-Feng Huang
- Department of Surgery, Division of Neurosurgery, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City, Taiwan; School of Medicine, Tzu Chi University, Hualien, Taiwan
| | - Fu-Yi Yang
- Stroke Center and Department of Neurology, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation , New Taipei City , Taiwan
| | - Shinn-Kuang Lin
- Stroke Center and Department of Neurology, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City, Taiwan; School of Medicine, Tzu Chi University, Hualien, Taiwan
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26
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Su YC. [The elementary discussion on digital implant dentistry]. Zhonghua Kou Qiang Yi Xue Za Zhi 2016; 51:194-200. [PMID: 27117209 DOI: 10.3760/cma.j.issn.1002-0098.2016.04.002] [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
It is a digital age today. Exposed to all kinds of digital products in many fields. Certainly, implant dentistry is not exception. Digitalization could improve the outcomes and could decrease the complications of implant dentistry. This paper introduces the concepts, definitions, advantages, disadvantages, limitations and errors of digital implant dentistry.
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Affiliation(s)
- Y C Su
- Center of Implant Dentistry, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100032, China
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27
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Zhang LW, Cong X, Zhang Y, Wei T, Su YC, Serrão ACA, Brito ART, Yu GY, Hua H, Wu LL. Interleukin-17 Impairs Salivary Tight Junction Integrity in Sjögren's Syndrome. J Dent Res 2016; 95:784-92. [PMID: 26933138 DOI: 10.1177/0022034516634647] [Citation(s) in RCA: 40] [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] [Indexed: 01/29/2023] Open
Abstract
Sjögren's syndrome (SS) is an inflammatory autoimmune disease that causes secretory dysfunction of the salivary glands. It has been reported that proinflammatory cytokine interleukin-17 (IL-17) was elevated and tight junction (TJ) integrity disrupted in minor salivary glands from SS patients. However, whether the elevated IL-17 in SS affects TJ integrity and thereby alters the function of salivary gland is unknown. Here, by using nonobese diabetic (NOD) mice as SS model, we found that the stimulated salivary flow rate was significantly decreased in NOD mice. Lymphocyte infiltration was mainly observed in submandibular glands (SMGs), but not parotid glands (PGs), of NOD mice. IL-17 was significantly increased and mainly located in lymphocytic-infiltrating regions in SMGs but not detectable in PGs of NOD mice. Meanwhile, the epithelial barrier function was disrupted, as evidenced by an increased paracellular tracer clearance and an enlarged acinar TJ width in SMGs of NOD mice. Furthermore, claudin-1 and -3 were elevated especially at the basolateral membranes, whereas claudin-4, occludin, and zonula occludens-1 (ZO-1) were reduced in SMGs of NOD mice. Moreover, occludin and ZO-1 were dispersed into cytoplasm in SMGs of NOD mice. However, no change in the expression and distribution of TJ proteins was found in PGs. In vitro, IL-17 significantly decreased the levels and apical staining of claudin-4 and ZO-1 proteins in the cultured SMG tissues, as well as claudin-1, occludin, and ZO-1 in PG tissues. Moreover, IL-17 activated the phosphorylation of IκBα and p65 in SMG cells, whereas pretreatment with NF-κB inhibitor pyrrolidine dithiocarbamate suppressed the IL-17-induced downregulation of claudin-4 and ZO-1 in SMG tissues. Taken together, these findings indicate that IL-17 derived from infiltrating lymphocyte impairs the integrity of TJ barrier through NF-κB signaling pathway, and thus might contribute to salivary gland dysfunction in SS.
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Affiliation(s)
- L W Zhang
- Department of Oral Medicine and Center for Salivary Gland Diseases of Peking University School and Hospital of Stomatology, Beijing, P.R. China
| | - X Cong
- Department of Physiology and Pathophysiology, Peking University Health Science Center, Key Laboratory of Molecular Cardiovascular Sciences, Ministry of Education, and Beijing Key Laboratory of Cardiovascular Receptors Research, Beijing, P.R. China
| | - Y Zhang
- Department of Physiology and Pathophysiology, Peking University Health Science Center, Key Laboratory of Molecular Cardiovascular Sciences, Ministry of Education, and Beijing Key Laboratory of Cardiovascular Receptors Research, Beijing, P.R. China
| | - T Wei
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing, P.R. China
| | - Y C Su
- Department of Physiology and Pathophysiology, Peking University Health Science Center, Key Laboratory of Molecular Cardiovascular Sciences, Ministry of Education, and Beijing Key Laboratory of Cardiovascular Receptors Research, Beijing, P.R. China
| | - A C A Serrão
- Department of Physiology and Pathophysiology, Peking University Health Science Center, Key Laboratory of Molecular Cardiovascular Sciences, Ministry of Education, and Beijing Key Laboratory of Cardiovascular Receptors Research, Beijing, P.R. China Department of Dentistry, Santa Cecília University, Santos, Brazil
| | - A R T Brito
- Department of Physiology and Pathophysiology, Peking University Health Science Center, Key Laboratory of Molecular Cardiovascular Sciences, Ministry of Education, and Beijing Key Laboratory of Cardiovascular Receptors Research, Beijing, P.R. China Department of Dentistry, Santa Cecília University, Santos, Brazil
| | - G Y Yu
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing, P.R. China
| | - H Hua
- Department of Oral Medicine and Center for Salivary Gland Diseases of Peking University School and Hospital of Stomatology, Beijing, P.R. China
| | - L L Wu
- Department of Physiology and Pathophysiology, Peking University Health Science Center, Key Laboratory of Molecular Cardiovascular Sciences, Ministry of Education, and Beijing Key Laboratory of Cardiovascular Receptors Research, Beijing, P.R. China
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28
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Chen XY, Wen CM, Wu JL, Su YC, Hong JR. Giant seaperch iridovirus (GSIV) induces mitochondria-mediated cell death that is suppressed by bongkrekic acid and cycloheximide in a fish cell line. Virus Res 2015; 213:37-45. [PMID: 26548846 DOI: 10.1016/j.virusres.2015.11.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2015] [Revised: 10/30/2015] [Accepted: 11/02/2015] [Indexed: 12/20/2022]
Abstract
Giant seaperch iridovirus (GSIV) induces cell death by an unknown mechanism. We postulated that this mechanism involves mitochondria-mediated cell death. Cell viability assays revealed a steady increase in dead grouper fin cells (GF-1) after GSIV infection, from 11% at 2 days post-infection (dpi) to 67% at 5 dpi. Annexin V/PI staining revealed GSIV infection induced apoptosis in a steadily increasing fraction of cells, from 4% at 1 dpi to 29% at 5 dpi. Furthermore, post-apoptotic necrosis was apparent at 4 and 5 dpi in the late replication stage. In the early replication stage, JC-1 dye revealed mitochondrial membrane potential (ΔΨm) loss in 42% of infected cells at 1 dpi, increasing to 98% at 3 dpi. Phosphatidylserine (PS) exposure and loss of ΔΨm from apoptosis/necrosis was attenuated by treatment with the adenine nucleotide translocase inhibitor bongkrekic acid (BKA) and the protein synthesis inhibitor cyclohexamide (CHX). These data suggest GSIV induces GF-1 apoptotic/necrotic cell death through pathways that require newly synthesized protein and involve the mitochondrial function.
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Affiliation(s)
- Xin-Yu Chen
- Laboratory of Molecular Virology and Biotechnology, Institute of Biotechnology, National Cheng-Kung University, Tainan 701, Taiwan
| | - Chiu-Ming Wen
- Department of Life Sciences, National University of Kaohsiung, Kaohsiung 811, Taiwan
| | - Jen-Leih Wu
- Laboratory of Marine Molecular Biology and Biotechnology, Institute of Cellular and Organismic Biology, Academia Sinica, Nankang, Taipei 115, Taiwan
| | - Yu-Chin Su
- Laboratory of Molecular Virology and Biotechnology, Institute of Biotechnology, National Cheng-Kung University, Tainan 701, Taiwan
| | - Jiann-Ruey Hong
- Laboratory of Molecular Virology and Biotechnology, Institute of Biotechnology, National Cheng-Kung University, Tainan 701, Taiwan.
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29
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Law J, Salla M, Zare A, Wong Y, Luong L, Volodko N, Svystun O, Flood K, Lim J, Sung M, Dyck JRB, Tan CT, Su YC, Yu VC, Mackey J, Baksh S. Modulator of apoptosis 1 (MOAP-1) is a tumor suppressor protein linked to the RASSF1A protein. J Biol Chem 2015; 290:24100-18. [PMID: 26269600 PMCID: PMC4591801 DOI: 10.1074/jbc.m115.648345] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2015] [Indexed: 01/21/2023] Open
Abstract
Modulator of apoptosis 1 (MOAP-1) is a BH3-like protein that plays key roles in cell death or apoptosis. It is an integral partner to the tumor suppressor protein, Ras association domain family 1A (RASSF1A), and functions to activate the Bcl-2 family pro-apoptotic protein Bax. Although RASSF1A is now considered a bona fide tumor suppressor protein, the role of MOAP-1 as a tumor suppressor protein has yet to be determined. In this study, we present several lines of evidence from cancer databases, immunoblotting of cancer cells, proliferation, and xenograft assays as well as DNA microarray analysis to demonstrate the role of MOAP-1 as a tumor suppressor protein. Frequent loss of MOAP-1 expression, in at least some cancers, appears to be attributed to mRNA down-regulation and the rapid proteasomal degradation of MOAP-1 that could be reversed utilizing the proteasome inhibitor MG132. Overexpression of MOAP-1 in several cancer cell lines resulted in reduced tumorigenesis and up-regulation of genes involved in cancer regulatory pathways that include apoptosis (p53, Fas, and MST1), DNA damage control (poly(ADP)-ribose polymerase and ataxia telangiectasia mutated), those within the cell metabolism (IR-α, IR-β, and AMP-activated protein kinase), and a stabilizing effect on microtubules. The loss of RASSF1A (an upstream regulator of MOAP-1) is one of the earliest detectable epigenetically silenced tumor suppressor proteins in cancer, and we speculate that the additional loss of function of MOAP-1 may be a second hit to functionally compromise the RASSF1A/MOAP-1 death receptor-dependent pathway and drive tumorigenesis.
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Affiliation(s)
| | | | | | - Yoke Wong
- From the Departments of Biochemistry and
| | - Le Luong
- From the Departments of Biochemistry and
| | | | | | | | | | - Miranda Sung
- Pediatrics, Cardiovascular Research Group, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta T6G 2E1, Canada
| | - Jason R B Dyck
- Pediatrics, Cardiovascular Research Group, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta T6G 2E1, Canada
| | - Chong Teik Tan
- the Department of Pharmacy, Faculty of Science, National University of Singapore, Singapore 117543, Singapore
| | - Yu-Chin Su
- the Department of Pharmacy, Faculty of Science, National University of Singapore, Singapore 117543, Singapore
| | - Victor C Yu
- the Department of Pharmacy, Faculty of Science, National University of Singapore, Singapore 117543, Singapore
| | - John Mackey
- the Department of Experimental Oncology, Cross Cancer Institute, University of Alberta, Edmonton, Alberta T6G 1Z2, Canada, and
| | - Shairaz Baksh
- From the Departments of Biochemistry and Pediatrics, the Department of Experimental Oncology, Cross Cancer Institute, University of Alberta, Edmonton, Alberta T6G 1Z2, Canada, and the Cancer Research Institute of Northern Alberta, Edmonton, Alberta T6G 1Z2, Canada, the Alberta IBD Consortium, Edmonton, Alberta T6G 2X8, Canada, and the Women and Children's Health Research Institute, Edmonton, Alberta T6G 1C9, Canada
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30
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Hung TY, Su YC. Increased risk of ischemic stroke in patients with burn injury: a nationwide cohort study in Taiwan. Crit Care 2015. [PMCID: PMC4471087 DOI: 10.1186/cc14550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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31
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Su YC, Guo X, Qi X. Threonine 56 phosphorylation of Bcl-2 is required for LRRK2 G2019S-induced mitochondrial depolarization and autophagy. Biochim Biophys Acta Mol Basis Dis 2014; 1852:12-21. [PMID: 25446991 DOI: 10.1016/j.bbadis.2014.11.009] [Citation(s) in RCA: 50] [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: 08/13/2014] [Revised: 11/05/2014] [Accepted: 11/10/2014] [Indexed: 12/18/2022]
Abstract
The G2019S leucine-rich repeat kinase 2 (LRRK2) mutation is the most common cause of genetic Parkinson's disease (PD). However, the molecular mechanism underlying LRRK2 G2019S-induced cellular pathology is poorly understood. Here, we demonstrated that LRRK2 G2019S bound to and phosphorylated Bcl-2, a mitochondrial anti-apoptotic protein, at Threonine 56. Either stable expression of Bcl-2 or transient expression of a Bcl-2 phosphor mutant (Bcl-2(T56A)) abolished LRRK2 G2019S-induced mitochondrial depolarization and autophagy. Together, our findings reveal a previously unidentified target of LRRK2 G2019S, showing that Bcl-2 serves as a point of crosstalk between LRRK2 G2019S-mediated mitochondrial disorder and dysregulation of autophagy.
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Affiliation(s)
- Yu-Chin Su
- Department of Physiology and Biophysics Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA
| | - Xing Guo
- Department of Physiology and Biophysics Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA
| | - Xin Qi
- Department of Physiology and Biophysics Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA.,Center for Mitochondrial Diseases, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA
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Abstract
We examined the effects of visual rehabilitation, including a chromatic luminance discrimination program and a fixation training program, on a 6-yr-old boy with severe visual impairment. Single-subject ABA and AB designs were used. The programs were conducted 2×/wk and included 6 to 7 sessions for the baseline phase and 10 to 11 sessions for the intervention phase. Play was integrated into the visual training programs. Goggle visual evoked potential (VEP) testing was used to evaluate neural activity in the primary visual cortex. Correct responses increased and response times were shortened after training in luminance discrimination. The total and maximum fixation time also improved, as did P100 latency and amplitude of VEPs. While walking, the boy was able to detect obstacles he had not noticed before training. The results indicate the value of visual training and the possibility of brain plasticity in a child with severe visual impairment.
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Affiliation(s)
- Li-Ting Tsai
- School of Occupational Therapy, College of Medicine, National Taiwan University, Taipei
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Su YC, Qi X. Inhibition of excessive mitochondrial fission reduced aberrant autophagy and neuronal damage caused by LRRK2 G2019S mutation. Hum Mol Genet 2013; 22:4545-61. [PMID: 23813973 DOI: 10.1093/hmg/ddt301] [Citation(s) in RCA: 176] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
LRRK2 G2019S mutation is the most common genetic cause of Parkinson's disease (PD). Cellular pathology caused by this mutant is associated with mitochondrial dysfunction and augmented autophagy. However, the underlying mechanism is not known. In this study, we determined whether blocking excessive mitochondrial fission could reduce cellular damage and neurodegeneration induced by the G2019S mutation. In both LRRK2 G2019S-expressing cells and PD patient fibroblasts carrying this specific mutant, treatment with P110, a selective peptide inhibitor of fission dynamin-related protein 1 (Drp1) recently developed in our lab, reduced mitochondrial fragmentation and damage, and corrected excessive autophagy. LRRK2 G2019S directly bound to and phosphorylated Drp1 at Threonine595, whereas P110 treatment abolished this phosphorylation. A site-directed mutant, Drp1(T595A), corrected mitochondrial fragmentation, improved mitochondrial mass and suppressed excessive autophagy in both cells expressing LRRK2 G2019S and PD patient fibroblasts carrying the mutant. Further, in dopaminergic neurons derived from LRRK2 G2019S PD patient-induced pluripotent stem cells, we demonstrated that either P110 treatment or expression of Drp1(T595A) reduced mitochondrial impairment, lysosomal hyperactivity and neurite shortening. Together, we propose that inhibition of Drp1-mediated excessive mitochondrial fission might be a strategy for treatment of PD relevant to LRRK2 G2019S mutation.
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Affiliation(s)
- Yu-Chin Su
- Department of Physiology and Biophysics and
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34
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Abstract
Mitochondrial dysfunction has long been appreciated in the pathogenesis of various neurological disorders. However, the molecular basis underlying the decline in mitochondrial function is not fully understood. Mitochondria are highly dynamic organelles that frequently undergo fusion and fission. In healthy cells, the delicate balance between fusion and fission is required for maintaining normal mitochondrial and cellular function. However, under pathological conditions, the balance is disrupted, resulting in excessive mitochondrial fragmentation and mitochondrial dysfunction. The impaired fusion and fission processes can lead to apoptosis, necrosis and autophagic cell death and seem to play causal roles in the progression of acute and chronic neuronal injuries. In this article, important aspects of what is currently known about the molecular machinery regulating mitochondrial fission and fusion in mammalian cells is summarized. Special emphasis will be given to the consequences of disregulated mitochondrial morphology in the pathogenesis of neurological diseases.
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Affiliation(s)
- Yu-Chin Su
- Department of Physiology & Biophysics, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA
| | - Xin Qi
- Center for Mitochondrial Diseases, Case Western Reserve University School of Medicine, 10900 Euclid Avenue, E516, Cleveland, OH, 44106-44970, USA
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35
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Lee CC, Chiou WY, Ho HC, Lee MS, Hung SK, Lin HY, Su YC. Prognosticators and the relationship of depression and quality of life in head and neck cancer. Indian J Cancer 2013; 50:14-20. [DOI: 10.4103/0019-509x.112279] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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36
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Abstract
Excessive mitochondrial fission is associated with the pathology of a number of neurodegenerative diseases. Therefore, inhibitors of aberrant mitochondrial fission could provide important research tools in addition to potential leads for drug development. Using a rational approach, we designed a novel and selective peptide inhibitor, P110, of excessive mitochondrial fission. P110 inhibits Drp1 enzyme activity and blocks Drp1/Fis1 interaction in vitro and in cultured neurons, whereas it has no effect on the interaction between Drp1 and other mitochondrial adaptors, as demonstrated by co-immunoprecipitation. Furthermore, using a model of Parkinson's disease (PD) in culture, we demonstrated that P110 is neuroprotective by inhibiting mitochondrial fragmentation and reactive oxygen species (ROS) production and subsequently improving mitochondrial membrane potential and mitochondrial integrity. P110 increased neuronal cell viability by reducing apoptosis and autophagic cell death, and reduced neurite loss of primary dopaminergic neurons in this PD cell culture model. We also found that P110 treatment appears to have minimal effects on mitochondrial fission and cell viability under basal conditions. Finally, P110 required the presence of Drp1 to inhibit mitochondrial fission under oxidative stress conditions. Taken together, our findings suggest that P110, as a selective peptide inhibitor of Drp1, might be useful for the treatment of diseases in which excessive mitochondrial fission and mitochondrial dysfunction occur.
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Affiliation(s)
- Xin Qi
- Department of Physiology and Biophysics, Case Western Reserve University School of Medicine, Case Western Reserve University School of Medicine Cleveland, OH 44106 Cleveland, OH 44106 USA.
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Chang CW, Su YC, Her GM, Ken CF, Hong JR. Betanodavirus induces oxidative stress-mediated cell death that prevented by anti-oxidants and zfcatalase in fish cells. PLoS One 2011; 6:e25853. [PMID: 21991373 PMCID: PMC3185053 DOI: 10.1371/journal.pone.0025853] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2011] [Accepted: 09/12/2011] [Indexed: 12/21/2022] Open
Abstract
The role of oxidative stress in the pathogenesis of RNA nervous necrosis virus infection is still unknown. Red-spotted grouper nervous necrosis virus (RGNNV) induced free radical species (ROS) production at 12-24 h post-infection (pi; early replication stage) in fish GF-1 cells, and then at middle replication stage (24-48 h pi), this ROS signal may upregulate some expressions of the anti-oxidant enzymes Cu/Zn SOD and catalase, and eventually expression of the transcription factor Nrf2. Furthermore, both antioxidants diphenyliodonium and N-acetylcysteine or overexpression of zebrafish catalase in GF-1 cells also reduced ROS production and protected cells for enhancing host survival rate due to RGNNV infection. Furthermore, localization of ROS production using esterase activity and Mitotracker staining assays found that the ROS generated can affect mitochondrial morphology changes and causes ΔΨ loss, both of which can be reversed by antioxidant treatment. Taken together, our data suggest that RGNNV induced oxidative stress response for playing dual role that can initiate the host oxidative stress defense system to upregulate expression of antioxidant enzymes and induces cell death via disrupting the mitochondrial morphology and inducing ΔΨ loss, which can be reversed by anti-oxidants and zfcatalase, which provide new insight into betanodavirus-induced ROS-mediated pathogenesis.
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Affiliation(s)
- Chih-Wei Chang
- Laboratory of Molecular Virology and Biotechnology, Institute of Biotechnology, National Cheng Kung University, Tainan, Taiwan, Republic of China
| | - Yu-Chin Su
- Laboratory of Molecular Virology and Biotechnology, Institute of Biotechnology, National Cheng Kung University, Tainan, Taiwan, Republic of China
| | - Guor-Mour Her
- Institute of Bioscience and Biotechnology, National Taiwan Ocean University, Keelung, Taiwan, Republic of China
| | - Chuian-Fu Ken
- The Department of Biotechnology, National Changhua University of Education, Changhua, Taiwan, Republic of China
| | - Jiann-Ruey Hong
- Laboratory of Molecular Virology and Biotechnology, Institute of Biotechnology, National Cheng Kung University, Tainan, Taiwan, Republic of China
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Su YC, Wu JL, Hong JR. Betanodavirus up-regulates chaperone GRP78 via ER stress: roles of GRP78 in viral replication and host mitochondria-mediated cell death. Apoptosis 2011; 16:272-87. [PMID: 21170590 DOI: 10.1007/s10495-010-0565-x] [Citation(s) in RCA: 36] [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: 12/31/2022]
Abstract
Whether viral pathogens that induce ER stress responses benefit the host or the virus remains controversial. In this study we show that betanodavirus induced ER stress responses up-regulate GRP78, which regulates the viral replication and host cellular mitochondrial-mediated cell death. Betanodavirus (redspotted grouper nervous necrosis virus, RGNNV) infection resulted in the following increased ER stress responses in fish GF-1 grouper fin cells: (1) IRE-1 and ATF-6 sensors at 48 h post-infection (p.i.) that up-regulated chaperone protein GRP78; (2) activation of caspase-12; and (3) PERK phosphorylation and down-regulation of Bcl-2. Analyses of GRP78 functions during viral replication using either loss-of-function or gain-of-function approaches showed that GRP78 over-expression also enhanced viral replication and induced cell death. Then, we found that zfGRP78 localization gradually increased in mitochondria after RGNNV infection by EGFP tagging approach. Furthermore, zfGRP78 can interact with viral RNA-dependent RNA polymerase (RdRp) by using immunofluorescent and immunoprecipitation assays. Finally, we found that blocking GRP78-mediated ER signals can reduce the viral death factors protein α and protein B2 expression and decrease the Bcl-2 down-regulation mediated mitochondria-dependent cell death, which also enhances host cellular viability. Taken together, our results suggest that RGNNV infection and expression can trigger ER stress responses, which up-regulate the chaperone GRP78 at early replication stage. Then, GRP78 can interact with RdRp that may enhance the viral replication for increasing viral death factors' expressions at middle-late replication stage, which can enhance mitochondrial-mediated cell death pathway and viral spreading. These results may provide new insights into the mechanism of ER stress-mediated cell death in RNA viruses.
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Affiliation(s)
- Yu-Chin Su
- Laboratory of Molecular Virology and Biotechnology, Institute of Biotechnology, National Cheng Kung University, Tainan 701, Taiwan, ROC
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Tsai LT, Chen CC, Jang Y, Wu CT, Su YC. P300 ERP Component Depends on Both Spatial Frequency and Contrast. Iperception 2011. [PMCID: PMC5393771 DOI: 10.1068/ic381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
Contrast perception depends on not only the early visual responses, but also top-down modulations. We measured how does P300, a well-documented event-related potential (ERP) index for top-down influence, change with both spatial frequency and contrast. ERP were acquired from 10 participants, aged 18–50 years, when they were performing a visual oddball task. The target was a Gabor patch whose spatial frequency was either 4 or 8 cy/degree and contrasts 90% or 30%. The probability of target presence in a trial was 30%. All target stimuli produced a reliable P300 component. At the low spatial frequency, the amplitude of P300 was larger and the latency was shorter for the low contrast patterns than for the higher contrast ones for all electrodes. Such difference was not observed in high spatial frequency patterns. The latency was slightly longer for high spatial frequency patterns than the low spatial frequency ones. Our results showed an interaction between spatial frequency and contrast in P300. The characteristics of P300 at low spatial frequency correlated with task difficulty, but not at high spatial frequency. This suggests that the top-down influence on contrast perception may be spatial frequency depended.
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Lin LC, Fann WC, Chou MH, Chen HW, Su YC, Chen JC. Urine specific gravity as a predictor of early neurological deterioration in acute ischemic stroke. Med Hypotheses 2011; 77:11-4. [PMID: 21444157 DOI: 10.1016/j.mehy.2011.03.012] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2011] [Accepted: 03/07/2011] [Indexed: 11/18/2022]
Abstract
We previously found that a blood urea nitrogen/creatinine (BUN/Cr) ratio>15 is an independent predictor of early neurological deterioration after acute ischemic stroke, which suggests that dehydration may be a cause of early deterioration. The aim of this study was to determine whether urine specific gravity, which is another indicator of hydration status and one that is more easily obtained, is also an independent predictor of early deterioration or stroke-in-evolution (SIE). Demographic and clinical data were recorded at admission from patients with acute ischemic stroke who were prospectively enrolled from October 2007 to June 2010. We compared patients with and without stroke-in-evolution (based on an increase of 3 points or more points on the National Institutes of Health Stroke Scale within 3 days). Univariate and multivariate statistical analyses were carried out. A total of 317 patients (43 SIE and 274 non-SIE) were enrolled; the first 196 patients comprised the cohort of our previous study. The only two independent predictors of early deterioration or SIE were BUN/Cr>15 and urine specific gravity>1.010. After adjusting for age and gender, patients with a urine specific gravity>1.010 were 2.78 times more likely to develop SIE (95% CI=1.11-6.96; P=0.030). Urine specific gravity may be useful as an early predictor of early deterioration in patients with acute ischemic stroke. Patients with urine specific gravity ≤ 1.010 therefore may have a reduced likelihood of early neurological deterioration.
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Affiliation(s)
- L C Lin
- Department of Emergency Medicine, Chang Gung Memorial Hospital, Chiayi, Chang Gung University College of Medicine, Taiwan, ROC
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Su YC, Hong JR. Betanodavirus B2 causes ATP depletion-induced cell death via mitochondrial targeting and complex II inhibition in vitro and in vivo. J Biol Chem 2010; 285:39801-10. [PMID: 20870718 DOI: 10.1074/jbc.m110.164988] [Citation(s) in RCA: 27] [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: 12/17/2022] Open
Abstract
The betanodavirus non-structural protein B2 is a newly discovered necrotic death factor with a still unknown role in regulation of mitochondrial function. In the present study, we examined protein B2-mediated inhibition of mitochondrial complex II activity, which results in ATP depletion and thereby in a bioenergetic crisis in vitro and in vivo. Expression of protein B2 was detected early at 24 h postinfection with red-spotted grouper nervous necrosis virus in the cytoplasm. Later B2 was found in mitochondria using enhanced yellow fluorescent protein (EYFP) and immuno-EM analysis. Furthermore, the B2 mitochondrial targeting signal peptide was analyzed by serial deletion and specific point mutation. The sequence of the B2 targeting signal peptide ((41)RTFVISAHAA(50)) was identified and its presence correlated with loss of mitochondrial membrane potential in fish cells. Protein B2 also was found to dramatically inhibit complex II (succinate dehydrogenase) activity, which impairs ATP synthesis in fish GF-1 cells as well as human embryonic kidney 293T cells. Furthermore, when B2 was injected into zebrafish embryos at the one-cell stage to determine its cytotoxicity and ability to inhibit ATP synthesis, we found that B2 caused massive embryonic cell death and depleted ATP resulting in further embryonic death at 10 and 24 h post-fertilization. Taken together, our results indicate that betanodavirus protein B2-induced cell death is due to direct targeting of the mitochondrial matrix by a specific signal peptide that targets mitochondria and inhibits mitochondrial complex II activity thereby reducing ATP synthesis.
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Affiliation(s)
- Yu-Chin Su
- Laboratory of Molecular Virology and Biotechnology, Institute of Biotechnology, National Cheng Kung University, Tainan 701, Taiwan
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Wu HC, Wu JL, Chu HL, Su YC, Hong JR. RGNNV induces mitochondria-mediated cell death via newly synthesized protein dependent pathway in fish cells. Fish Shellfish Immunol 2010; 29:451-463. [PMID: 20641154 DOI: 10.1016/j.fsi.2010.05.003] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
The RNA nervous necrosis virus induces necrotic cell death in fish; however, the molecular mechanism remains unknown. In this study, we demonstrated that beta-nodavirus-induced mitochondria-mediated dependent cell death is through newly synthesized protein dependent pathway in replication cycle. We determined that newly synthesized protein dependent pathway is required for red-spotted grouper nervous necrosis virus (RGNNV)-induced cell death. UV irradiation of the virus effectively blocked viral replication and cell death. Next, RGNNV RNA-dependent RNA polymerase (RdRp or protein A) was cloned and its involvement in RNA genome replication and viral protein synthesis was analyzed. Protein A was initially expressed 48 h post-infection and localized to the cytoplasm. Knockdown of protein A expression completely blocked viral genomic replication and expression of viral protein expression RNA1 small hairpin RNA (shRNA) producing cell lines, which coincided with inhibition of phosphatidylserine exposure, mitochondria-mediated death signaling, and increased cell viability 72 h post-infection. Furthermore, RGNNV-induced mitochondria-mediated caspase-3-independent necrotic cell death is dependent on viral synthesized protein dependent pathway at the middle-late replication stage. Taken together, for instance these results suggested that RGNNV induces cell death may require newly synthesized protein for triggering host mitochondria-mediated cell death. These findings may provide new insights into RNA viral pathogenesis.
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Affiliation(s)
- Horng-Cherng Wu
- Laboratory of Molecular Virology and Biotechnology, Institute of Biotechnology, National Cheng Kung University, Tainan 701, Taiwan, ROC
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43
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Affiliation(s)
- W H Hsu
- Division of Gastroenterology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
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Chen LJ, Su YC, Hong JR. Betanodavirus non-structural protein B1: A novel anti-necrotic death factor that modulates cell death in early replication cycle in fish cells. Virology 2009; 385:444-54. [PMID: 19136133 DOI: 10.1016/j.virol.2008.11.048] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2008] [Revised: 11/03/2008] [Accepted: 11/25/2008] [Indexed: 12/30/2022]
Abstract
The functions of the Betanodavirus non-structural protein B1 is still unknown. We examined B1 expression patterns and investigated novel cell death regulatory functions for this viral protein following RGNNV infection in fish cells. The B1 gene (336 nt) was cloned from the redspotted grouper nervous necrosis virus (RGNNV) genome. B1 mRNA was rapidly expressed in the fish cells from viral RNA3 at 12 h post-infection (p.i.). At the protein level, expression was low at 12 h p.i., and then increased rapidly between 24 h and 72 h p.i. In RGNNV-infected, B1-containing fish cells, over expression of RGNNV B1 reduced Annexin-V positive cells by 50% and 65% at 48 h and 72 h p.i., respectively, and decreased loss of mitochondrial membrane potential (MMP) by 20% and 70% at 48 h and 72 h p.i., respectively. Finally, B1 knockdown during RGNNV infection using anti-sense RNA increased necrotic cell death and reduced cell viability during the early replication cycle (24 h p.i.). Our results suggest that B1 is an early expression protein that has an anti-necrotic cell death function which reduces the MMP loss and enhances viral host cell viability. This finding provides new insights into RNA viral pathogenesis and disease control.
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Affiliation(s)
- Lei-Jia Chen
- Laboratory of Molecular Virology and Biotechnology, Institute of Biotechnology; National Cheng Kung University, Tainan 701, Taiwan
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Su YC, Wu JL, Hong JR. Betanodavirus non-structural protein B2: A novel necrotic death factor that induces mitochondria-mediated cell death in fish cells. Virology 2008; 385:143-54. [PMID: 19116179 DOI: 10.1016/j.virol.2008.11.036] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2008] [Revised: 09/17/2008] [Accepted: 11/13/2008] [Indexed: 12/31/2022]
Abstract
The Betanodavirus non-structural protein B2 plays a role in silencing RNA interference (RNAi), which mediated regulation of animal and plant innate immune responses, but little is known regarding the role of B2 in cell death. The present study examined the effects of B2 on mitochondria-mediated necrotic cell death in grouper liver (GL-av) cells. B2 was expressed at 12 h post-infection (pi), with increased expression between 24 and 72 h pi by Western blot. B2 was transiently expressed to investigate possible novel protein functions. Transient expression of B2 in GL-av cells resulted in apoptotic cell features and positive TUNEL assays (28%) at 24 h post-transfection (pt). During mechanistic studies of cell death, B2 upregulated expression of the proapoptotic gene Bax (2.8 fold at 48 h pt) and induced loss of mitochondria membrane potential (MMP) but not mitochondrial cytochrome c release. Furthermore, over expression of Bcl-2 family member zfBcl-xL effectively prevented B2-induced, mitochondria-mediated necrotic cell death. Finally, using RNA interference to reduce B2 expression, both B2 and Bax expression were downregulated and RGNNV-infected cells were rescued from secondary necrosis. Taken together, our results suggest that B2 upregulates Bax and triggers mitochondria-mediated necrotic cell death independent of cytochrome c release.
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Affiliation(s)
- Yu-Chin Su
- Institute of Biotechnology, National Cheng Kung University, Taiwan, ROC
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Lim SN, Lee ST, Tsai YT, Chen IA, Tu PH, Chen JL, Chang HW, Su YC, Wu T. Long-term anterior thalamus stimulation for intractable epilepsy. Chang Gung Med J 2008; 31:287-296. [PMID: 18782952] [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: 05/26/2023]
Abstract
BACKGROUND Deep brain stimulation (DBS) has re-emerged as an alternative therapy for intractable epilepsy. In this study, we investigated the feasibility, efficacy and safety of long-term anterior thalamic nucleus (ATN) stimulation for intractable epilepsy. METHODS In this open-label pilot study of electrical stimulation of the ATN, we investigated four cases of intractable epilepsy (one man with generalized seizure, and three woman with partial seizure and secondary generalization; age range, 18-45 years), with a follow up of 2 years. Under the indication of bilateral or nonlocalized epileptic foci, each patient underwent stereotactic implantation of a quadripolar stimulating electrode in the bilateral ATN, guided by single-unit microelectrode recording. The stimulator was turned on after a sham period of 2-4 weeks. Seizure frequency was monitored and compared with the pre-implantation baseline. Twenty-one similar cases reported in the literature during the past 20 years were reviewed. RESULTS Insertion into and stimulation through electrodes implanted in the ATN decreased seizure frequency, with a mean reduction rate of 49.6% in the current series. Two patients had seizure reductions of > or = 60%, with complete remission achieved in one patient. These findings were consistent with those in four other investigations of intractable epilepsy, which showed an overall rate of 45-55% in seizure reduction. One of our patients suffered a small frontal hemorrhage, and a second patient had extension erosion over the scalp; however, no resultant major or permanent neurological deficits were observed. CONCLUSIONS Based on our study results and literature review, it appears reasonable to conclude that long-term ATN stimulation is a safe and effective treatment for seizure reduction in patients with intractable epilepsy.
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Affiliation(s)
- Siew-Na Lim
- Section of Epilepsy, Department of Neurology, Chang Gung Memorial Hospital, Taipei, Taiwan, ROC
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Su YC, Huang CP, Pan JR, Lee HC. Characteristics of membrane fouling in submerged membrane bioreactor under sub-critical flux operation. Water Sci Technol 2008; 57:601-605. [PMID: 18360002 DOI: 10.2166/wst.2008.111] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Recently, the membrane bioreactor (MBR) process has become one of the novel technologies to enhance the performance of biological treatment of wastewater. Membrane bioreactor process uses the membrane unit to replace a sediment tank, and this can greatly enhance treatment performance. However, membrane fouling in MBR restricts its widespread application because it leads to permeate flux decline, making more frequent membrane cleaning and replacement necessary, which then increases operating and maintenance costs. This study investigated the sludge characteristics in membrane fouling under sub-critical flux operation and also assessed the effect of shear stress on membrane fouling. Membrane fouling was slow under sub-critical flux operation. However, as filamentous microbes became dominant in the reactor, membrane fouling increased dramatically due to the increased viscosity and polysaccharides. A close link was found between membrane fouling and the amount of polysaccharides in soluble EPS. The predominant resistance was the cake resistance which could be minimized by increasing the shear stress. However, the resistance of colloids and solutes was not apparently reduced by increasing shear stress. Therefore, smaller particles such as macromolecules (e.g. polysaccharides) may play an important role in membrane fouling under sub-critical flux operation.
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Affiliation(s)
- Y C Su
- Institute of Environmental Engineering, National Chiao Tung University, 75 Po-Ai Street, Hsinchu, Chinese Taiwan.
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Chen SP, Wu JL, Su YC, Hong JR. Anti-Bcl-2 family members, zfBcl-x(L) and zfMcl-1a, prevent cytochrome c release from cells undergoing betanodavirus-induced secondary necrotic cell death. Apoptosis 2007; 12:1043-60. [PMID: 17245642 DOI: 10.1007/s10495-006-0032-x] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.2] [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: 01/02/2023]
Abstract
Nervous necrosis virus (NNV)-induced, host cell apoptosis mediates secondary necrosis by an ill-understood process. In this study, redspotted grouper nervous necrosis virus (RGNNV) is shown to induce mitochondria-mediated necrotic cell death in GL-av cells (fish cells) via cytochrome c release, and anti-apoptotic proteins are shown to protect these cells from death. Western blots revealed that cytochrome c release coincided with disruption of mitochondrial ultrastructure and preceded necrosis, but did not correlate with caspases activation. To identify the mediator(s) of this necrotic process, a protein synthesis inhibitor (cycloheximide; CHX; 0.33 microg/ml) was used to block cytochrome c release as well as PS exposure and mitochondrial membrane permeability transition pore (MMP) loss. CHX (0.33 microg/ml) completely blocked viral protein B2 expression, and partly blocked protein A, protein alpha, and a pro-apoptotic death protein (Bad) expression. Overexpression of B2 gene increased necrotic-like cell death up to 30% at 48 h post-transfection, suggesting that newly synthesized protein (B2) may be involved in this necrotic process. Finally, necrotic death was prevented by overexpression of Bcl-2 family proteins, zfBcl-x(L) and xfMcl-1a. Thus, new protein synthesis and release of cytochrome c are required for RGNNV-induced necrotic cell death, which can be blocked by anti-apoptotic Bcl-2 members.
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Affiliation(s)
- Shi-Ping Chen
- Laboratory of Molecular Virology and Biotechnology, Institute of Biotechnology, National Cheng Kung University, Tainan 701, Taiwan
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49
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Lim SN, Lee ST, Tsai YT, Chen IA, Tu PH, Chen JL, Chang HW, Su YC, Wu T. Electrical stimulation of the anterior nucleus of the thalamus for intractable epilepsy: a long-term follow-up study. Epilepsia 2007; 48:342-7. [PMID: 17295629 DOI: 10.1111/j.1528-1167.2006.00898.x] [Citation(s) in RCA: 169] [Impact Index Per Article: 9.9] [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: 01/04/2023]
Abstract
PURPOSE The anterior nucleus of the thalamus (ANT) modulates temporal lobe and hypothalamic activities, and relays information to the cingulate gyrus and entorhinal cortex. Deep brain stimulation (DBS) of the ANT has been reported to decrease seizure activity in a limited number of human subjects. However, long-term effect of chronic ANT stimulation on such patients remains unknown. We report long-term follow-up results in four patients receiving ANT stimulation for intractable epilepsy. METHODS Four patients underwent stereotactic implantation of quadripolar stimulating electrodes in the bilateral ANT, guided by single-unit microelectrode recording. Electrode location was confirmed by postoperative magnetic resonance imaging (MRI). The stimulator was activated 2-4 weeks following electrode insertion; initial stimulation parameters were 4-5 V, 90-110 Hz, and 60-90 micros. Seizure frequency was monitored and compared with preimplantation baseline frequency. Intelligence quotient (IQ) test and auditory P300 response were performed before and after implantation of electrodes. RESULTS Four patients (one man with generalized seizures, and three women with partial seizures and secondary generalization) aged 18-45 years old were studied with mean follow-up period of 43.8 months. The four patients demonstrated a sustained effect of 49% (range, 35-76%) seizure reduction to ANT stimulation. Simple insertion of DBS electrodes (Sham period, no stimulation) produced a mean reduction in seizures of 67% (range, 44-94%). One patient was seizure-free for 15 months with anticonvulsant medications. One patient had a small frontal hemorrhage and a second patient had extension erosion over scalp; no resultant major or permanent neurological deficit was observed. Preoperative IQ index and auditory P300 were not significantly different with those after electrodes implantation. CONCLUSIONS Implantation of electrodes in the ANT and subsequent stimulation is associated with a significant reduction in seizure frequency. However, our study could not differentiate whether the implantation itself, the subsequent stimulation or postimplantation drug manipulation had the greatest impact. These experimental results prompt further controlled study in a large patient population.
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Affiliation(s)
- Siew-Na Lim
- Section of Epilepsy, Department of Neurology, Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Taipei, Taiwan
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Sun YP, Xu Y, Cao T, Su YC, Guo YH. Zona pellucida thickness and clinical pregnancy outcome following in vitro fertilization. Int J Gynaecol Obstet 2005; 89:258-62. [PMID: 15919392 DOI: 10.1016/j.ijgo.2005.02.012] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2004] [Revised: 02/24/2005] [Accepted: 02/24/2005] [Indexed: 10/25/2022]
Abstract
OBJECTIVE To investigate possible correlations of ZPT or ZPTV with clinical outcome following in vitro fertilization. METHODS Two hundred forty-six embryos were selected for transfer on day 3 with clear image record from 81 IVF-ET cycles. The laser system measurement software was used to measure the ZTP value of each embryo and the ZPTV was computed. Statistical analysis was done using the ANOVA or Chi-square test. RESULTS Both ZPT and ZPTV declined with women's age. The mean ZPTV of embryos from patients between 30 and 34 years old was significantly higher than that from patients older than 35 (P<0.001). The ZPTV in pregnancy group was significantly higher than that in nonpregnancy group (P<0.005). The clinical pregnancy rate in the group with ZPTV more than 20% was significantly higher than that in the group with ZPTV less than 20% (P<0.05). The ZPTV of high grade embryos was significantly higher than that of low grade embryos (P<0.001). CONCLUSIONS ZPTV rather than ZPT is an effective parameter to evaluate the embryo quality. Increasing the ZPTV may enhance embryo implantation potential.
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Affiliation(s)
- Y P Sun
- Reproductive medical unit, Department of Obstetrics and Gynaecology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.
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