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Role of ascites adenosine deaminase in differentiating between tuberculous peritonitis and peritoneal carcinomatosis

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World Journal of Gastroenterology 2012年第22期18卷 2837-2843页

作者： Seung Joo Kang Ji Won Kim jee hyun Baek Se hyung Kim Byeong Gwan Kim Kook Lae Lee Ji Bong Jeong Yong Jin Jung Joo Sung Kim hyun Chae Jung In Sung Song Department of Internal Medicine and Liver Research Institute Seoul National University College of Medicine Department of Internal Medicine Seoul National University Boramae Hospital Department of Radiology Seoul National University College of Medicine

AIM: To investigate the usefulness of tumor markers and adenosine deaminase in differentiating between tuberculous peritonitis (TBP) and peritoneal carcinoma- tosis (PC). METHODS: A retrospective analysis of data was performed on consecutive patients who underwent perito-neoscopic and abdominal computed tomography (CT) evaluations. Among 75 patients at the Seoul National University Hospital from January 2000 to June 2010 who underwent both tests, 27 patients (36.0%) and 25 patients (33.3%) were diagnosed with TBP and PC, respectively. Diagnosis was confirmed by peritoneoscopic biopsy. RESULTS: Serum c-reactive protein (7.88 ± 6.62 mg/ dL vs 3.12 ± 2.69 mg/dL, P = 0.01), ascites adenosine deaminase (66.76 ± 32.09 IU/L vs 13.89 ± 8.95 IU/L, P < 0.01), ascites lymphocyte proportion (67.77 ± 23.41% vs 48.36 ± 18.78%, P < 0.01), and serumascites albumin gradient (0.72 ± 0.49 g/dL vs 1.05 ± 0.50 g/dL, P = 0.03) were significantly different between the two groups. Among tumor markers, serum and ascites carcinoembryonic antigen, serum carbohydrate antigen 19-9 showed significant difference between two groups. Abdominal CT examinations showed that smooth involvement of the parietal peritoneum was more common in the TBP group (77.8% vs 40.7%) whereas nodular involvement was more common in the PC group (14.8% vs 40.7%, P = 0.04). From receiver operating characteristic (ROC) curves ascites adenosines deaminase (ADA) showed better discriminative capability than tumor markers. An ADA cut-off level of 21 IU/L was found to yield the best results of differential diagnosis; sensitivity, specificity, positive predictive value, and negative predictive value were 92.0%, 85.0%, 88.5% and 89.5%, respectively. CONCLUSION: Besides clinical and radiologic findings, ascitic fluid ADA measurement is helpful in the differential diagnosis of TBP and PC.

关键词：腺苷脱氨酶癌胚抗原腹膜炎腹水结核肿瘤标志物分化 C-反应蛋白

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Comparative effectiveness of combined antiplatelet treatments in acute minor ischaemic stroke

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Stroke & Vascular Neurology 2022年第1期7卷 13-21页

作者： Shina Kim Joon-Tae Kim Ji Sung Lee Beom Joon Kim Jong-Moo Park Kyusik Kang Soo Joo Lee Jae Guk Kim Jae-Kwan Cha Dae-hyun Kim Tai Hwan Park Sang-Soon Park Kyung Bok Lee Jun Lee Keun-Sik Hong Yong-Jin Cho Hong-Kyun Park Byung-Chul Lee Kyung-Ho Yu Mi Sun Oh Dong-Eog Kim Wi-Sun Ryu Jay Chol Choi jee-hyun Kwon Wook-Joo Kim Dong-Ick Shin Sung-Il Sohn Jeong-Ho Hong Man-Seok Park Kang-Ho Choi Ki-hyun Cho Juneyoung Lee Hee-Joon Bae Department of Neurology Chonnam National University HospitalChonnam National University Medical SchoolGwangjuKorea Clinical Research Center Asan Institute for Life SciencesAsan Medical CenterUniversity of Ulsan College of MedicineSeoulKorea Department of Neurology Cerebrovascular CenterSeoul National University Bundang HospitalSeongnamKorea Department of Neurology Uijeongbu Eulji Medical CenterEulji University School of MedicineUijeongbu-siKorea Department of Neurology Nowon Eulji Medical CenterEulji UniversitySeoulKorea Department of Neurology Eulji University HospitalEulji UniversityDaejeonKorea Department of Neurology Dong-a UniversityBusanKorea Department of Neurology Seoul Medical CenterSeoulKorea Department of Neurology Soonchunhyang University HospitalSeoulKorea Department of Neurology Yeungnam University HospitalDaeguKorea Department of Neurology Inje University Ilsan Paik HospitalInje University College of MedicineGoyangKorea Department of Neurology Hallym University Sacred Heart HospitalAnyangKorea Department of Neurology Dongguk University Ilsan HospitalGoyangKorea Department of Neurology Jeju National University HospitalJeju National University School of MedicineJejuKorea Department of Neurology University of Ulsan College of MedicineUlsanKorea Department of Neurology Chungbuk National University HospitalCheongjuKorea Department of Neurology Keimyung University Dongsan Medical CenterDaeguKorea Department of Biostatistics Korea University College of MedicineSeoulKorea

Background No study has thoroughly compared the effectiveness of combined antiplatelet treatments(other than clopidogrel–aspirin)versus clopidogrel–aspirin or aspirin alone for early secondary prevention in acute ischaemic *** We identified patients with acute,minor,non-cardiogenic ischaemic stroke treated with aspirin alone,clopidogrel–aspirin or other combination *** scores considering the inverse probability of treatment weighting were used to adjust for baseline *** primary outcome was the composite of all strokes(ischaemic or haemorrhagic),myocardial infarction and all-cause mortality at 3 *** Among 12234 patients(male:61.9%;age:65.5±13 years)who met the eligibility criteria,aspirin,clopidogrel–aspirin and other combination treatments were administered in 52.2%,42.9%and 4.9%of patients,*** the crude analysis,the primary outcome event at 3 months occurred in 14.5%of the other combination group,14.4%of the aspirin group and 13.0%of the clopidogrel–aspirin *** the weighted Cox proportional hazards analysis,the 3-month primary outcome event occurred less frequently in the clopidogrel–aspirin group than in the other combination group(weighted HR:0.82(0.59–1.13)),while no association was found between the aspirin group(weighted HR:1.04(0.76–1.44))or other combination group and the 3-month primary *** Other combined antiplatelet treatment,compared with aspirin alone or clopidogrel–aspirin,was not associated with reduced risks of primary composite vascular events or recurrent stroke during the first 3 months after ***,the results suggest that other combination treatments,particularly the cilostazol-based combination,may not be effective alternatives for clopidogrel–aspirin to prevent early vascular events in patients with acute minor *** exploration in clinical trials will be needed.

关键词： prevention treatment alone

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Genetically encoded X-ray cellular imaging for nanoscale protein localization

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National Science Review 2020年第7期7卷 1218-1227页

作者： Huating kong Jichao Zhang Jiang Li Jian Wang hyun-Joon Shin Renzhong Tai Qinglong Yan Kai Xia Jun Hu Lihua Wang Ying Zhu Chunhai Fan Bioimaging Center Shanghai Synchrotron Radiation FacilityZhangjiang Laboratory Shanghai Advanced Research Institute Chinese Academy of Sciences Division of Physical Biology CAS Key Laboratory of Interfacial Physics and Technology Shanghai Institute of Applied Physics Chinese Academy of Sciences Canadian Light Source Inc. University of Saskatchewan Pohang Accelerator Laboratory POSTECH School of Chemistry and Chemical Engineering Frontiers Science Center for Transformative Molecules and Shanghai Key Laboratory for Nucleic Acids Chemistry and NanomedicineInstitute of Molecular Medicine Renji Hospital School of Medicine Shanghai Jiao Tong University

Spatial resolution defines the physical limit of microscopes for probing biomolecular localization and interactions in cells. Whereas synchrotron-based X-ray microscopy(XRM) represents a unique approach for imaging a whole cell with nanoscale resolution due to its intrinsic nanoscale resolution and great penetration ability, existing approaches to label biomolecules rely on the use of exogenous tags that are multi-step and error-prone. Here, we repurpose engineered peroxidases as genetically encoded X-ray-sensitive tags(GXET) for site-specific labeling of protein-of-interest in mammalian cells. We find that 3,3-diaminobenzidine(DAB) polymers that are in-situ catalytically formed by fusion-expressed peroxidases are visible under XRM. Using this new tag, we imaged the protein location associated with the alteration of a DNA-methylation pathway with an ultra-high resolution of 30 nanometers. Importantly, the excellent energy resolution of XRM enables multicolor imaging using different peroxidase tags. The development of GXET enlightens the way to nanoscopic imaging for biological studies.

关键词： synchrotron-based X-ray microscopy cellular imaging nanoscale protein localization genetically encoded X-ray tags 3,3-diaminobenzidine polymers

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Dietary fat-associated osteoarthritic chondrocytes gain resistance to lipotoxicity through PKCK2/STAMP2/FSP27

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Bone Research 2018年第3期6卷 238-251页

作者： Sung Won Lee jee hyun Rho Sang Yeob Lee Won Tae Chung Yoo Jin Oh Jung Ha Kim Seung Hee Yoo Woo Young Kwon Ju Yong Bae Su Young Seo Hokeun Sun Hye Young Kim Young hyun Yoo Department of Rheumatology Dong-A University College of Medicine Department of Anatomy and Cell Biology Dong-A University College of Medicine and Mitochondria Hub Regulation Center Department of Microbiology Dong-A University College of Medicine Department of Statistics Pusan National University

Free fatty acids(FFAs), which are elevated with metabolic syndrome, are considered the principal offender exerting lipotoxicity. Few previous studies have reported a causal relationship between FFAs and osteoarthritis pathogenesis. However, the molecular mechanism by which FFAs exert lipotoxicity and induce osteoarthritis remains largely unknown. We here observed that oleate at the usual clinical range does not exert lipotoxicity while oleate at high pathological ranges exerted lipotoxicity through apoptosis in articular chondrocytes. By investigating the differential effect of oleate at toxic and nontoxic concentrations, we revealed that lipid droplet(LD) accumulation confers articular chondrocytes, the resistance to lipotoxicity. Using high fat diet-induced osteoarthritis models and articular chondrocytes treated with oleate alone or oleate plus palmitate, we demonstrated that articular chondrocytes gain resistance to lipotoxicity through protein kinase casein kinase 2(PKCK2)—six-transmembrane protein of prostate 2(STAMP2)—and fat-specific protein 27(FSP27)-mediated LD accumulation. We further observed that the exertion of FFAs-induced lipotoxicity was correlated with the increased concentration of cellular FFAs freed from LDs, whether FFAs are saturated or not. In conclusion, PKCK2/STAMP2/FSP27-mediated sequestration of FFAs in LD rescues osteoarthritic chondrocytes. PKCK2/STAMP2/FSP27 should be considered for interventions against metabolic OA.

关键词： osteoarthritis remains articular chondrocytes

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Periodontitis combined with smoking increases risk of the ulcerative colitis: A national cohort study

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World Journal of Gastroenterology 2020年第37期26卷 5661-5672页

作者： Eun Ae Kang Jaeyoung Chun jee hyun Kim Kyungdo Han Hosim Soh Seona Park Seung Wook Hong Jung Min Moon Jooyoung Lee hyun Jung Lee Jun-Beom Park Jong Pil Im Joo Sung Kim Department of Internal Medicine and Institute of Gastroenterology Yonsei University College of MedicineSeoul 03722South Korea Department of Internal Medicine Gangnam Severance HospitalYonsei University College of MedicineSeoul 06229South Korea Department of Internal Medicine Bundang CHA Medical CenterCHA University School of MedicineSeoul 13496South Korea Department of Statistics and Actuarial Science Soongsil UniversitySeoul 06978South Korea Department of Internal Medicine and Liver Research Institute Seoul National University College of MedicineSeoul 03080South Korea Department of Periodontics the Catholic University of Korea College of MedicineSeoul 06591South Korea

BACKGROUND Periodontitis is a chronic inflammation of periodontal *** effect of periodontitis on the development of inflammatory bowel disease(IBD)remains *** To assessed the risk of IBD among patients with periodontitis,and the risk factors for IBD related to *** A nationwide population-based cohort study was performed using claims data from the Korean National Healthcare Insurance *** total,9950548 individuals aged≥20 years who underwent national health screening in 2009 were *** diagnosed IBD[Crohn’s disease(CD),ulcerative colitis(UC)]using the International Classification of Disease 10th revision and rare intractable disease codes,was compared between the periodontitis and nonperiodontitis groups until *** A total of 1092825 individuals(11.0%)had *** was significantly associated with older age,male gender,higher body mass index,quitting smoking,not drinking alcohol,and regular *** mean age was 51.4±12.9 years in the periodontitis group and 46.6±14.2 years in the nonperiodontitis group(P<0.01),*** mean body mass index was 23.9±3.1 and 23.7±3.2 in the periodontitis and non-periodontitis groups,respectively(P<0.01).Men were 604307(55.3%)and 4844383(54.7%)in the periodontitis and non-periodontitis groups,*** mean follow-up duration was 7.26 *** with periodontitis had a significantly higher risk of UC than those without periodontitis[adjusted hazard ratio:1.091;95%confidence interval(CI):1.008-1.182],but not CD(adjusted hazard ratio:0.879;95%confidence interval:0.731-1.057).The risks for UC were significant in the subgroups of age≥65 years,male gender,alcohol drinker,current smoker,and reduced physical *** smokers aged≥65 years with periodontitis were at a 1.9-fold increased risk of UC than non-smokers aged≥65 years without *** Periodontitis was significantly associated with the risk of developing UC,b

关键词： Inflammatory bowel disease Periodontitis Smoking Ulcerative colitis Crohn’s disease

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Tailoring strength-ductility balance of caliber-rolled AZ31 Mg alloy through subsequent annealing

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Journal of Magnesium and Alloys 2020年第1期8卷 163-171页

作者： Taein kong Byung Je Kwak Jonghyun Kim Jeong Hun Lee Sung Hyuk Park Ji Hoon Kim Young Hoon Moon hyun Sik Yoon Taekyung Lee School of Mechanical Engineering Pusan National UniversityBusan 46241Republic of Korea Advanced Forming Process R&D Group Korea Institute of Industrial TechnologyUlsan 44413Republic of Korea College of Materials Science and Engineering Chongqing UniversityChongqing 400044China School of Materials Science and Engineering Kyungpook National UniversityDaegu 41566Republic of Korea Department of Naval Architecture and Ocean Engineering Pusan National UniversityBusan 46241Republic of Korea

Recently,multi-pass caliber rolling has been shown to be effective for Mg *** study investigated the effect of subsequent annealing on the mechanical properties of a caliber-rolled AZ31 Mg alloy to modulate the strength-ductility *** annealing gave rise to different trends in mechanical properties depending on the temperature ***-temperature annealing(T≤473 K)exhibited a typical trade-off relationship,where an increase in annealing temperature resulted in increased ductility but decreased strength and *** a heat treatment did not degrade the high strength-ductility balance of the caliber-rolled alloy,suggesting that the mechanical properties could be tailored for different potential *** contrast,high-temperature annealing(T>473 K)caused a simultaneous deterioration in strength,hardness,and ductility with increasing annealing *** differences are discussed in terms of the varying microstructural features under the different investigated annealing regimes.

关键词： AZ31 Mg alloy Caliber rolling Annealing Grain growth Mechanical improvement Twinning

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The inhibition effect of Chlorpromazine against the β-lactam resistance of MRSA

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Asian Pacific Journal of Tropical Medicine 2016年第6期9卷 526-530页

作者： Ryong kong Ok-Hwa Kang Yun-Soo Seo Su-hyun Mun Tian Zhou Dong-Won Shin Dong-Yeul Kwon BK21 Plus Team Professional Graduate School of Oriental Medicine Wonkwang University Department of Oriental Pharmacy College of Pharmacy Wonkwang Oriental Medicines Research Institute Institute of Biotechnology Wonkwang University Department of Oriental Medicine Resources College of Bio Industry Science Sunchon National University

Objective:To investigate the gene related to β-lactam resistance and to confirm the mechanism about a synergy effect between CPZ and β-lactam ***:To measure antibacterial activity,we performed a minimum inhibitory concentration(MIC) and synergy *** electron microscopy(TEM) was used in morphological *** analyze gene expression,we conducted reverse transcriptase polymerase chain reaction(PCR).Results:We confirmed a synergy effect between CPZ and β-lactam ***,we observed that CPZ affect the cell envelope of MRS A by using *** the gene level,CPZ reduced the expression of resistance ***:Through this result,we hypothesize that a decrease of resistance factor expressions was caused by CPZ because it disrupts the activity of a sensor protein located in the cell membrane.

关键词： Chlorpromazine PBP2a β-lactamase mecA blaZ MRSA

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Bacterial entombment by intratubular mineralization following orthograde mineral trioxide aggregate obturation: a scanning electron microscopy study

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International Journal of Oral Science 2014年第4期6卷 227-232页

作者： Jun Sang Yoo Seok-Woo Chang So Ram Oh Hiran Perinpanayagam Sang-Min Lim Yeon-jee Yoo Yeo-Rok Oh Sang-Bin Woo Seung-hyun Han Qiang Zhu Kee-Yeon Kum Department of Dentistry U Dental Hospital Department of Conservative Dentistry School of Dentistry Kyung Hee University Department of Conservative Dentistry Dental Research Institute Seoul National University Dental Hospital Seoul National University School of Dentistry Division of Restorative Dentistry Schulich School of Medicine & Dentistry University of Western Ontario Department of Conservative Dentistry Jukjeon Dental Hospital College of Dentistry Dankook University Department of Oral Microbiology & Immunology Dental Research Institute and BK21 Program Seoul National University School of Dentistry Division of Endodontology Department of Oral Health and Diagnostic Sciences School of Dental Medicine University of Connecticut Health Center

The time domain entombment of bacteria by intratubular mineralization following orthograde canal obturation with mineral trioxide aggregate（MTA） was studied by scanning electron microscopy（SEM）. Single-rooted human premolars（n560） were instrumented to an apical size #50/0.06 using ProF ile and treated as follows： Group 1（n510） was filled with phosphate buffered saline（PBS）; Group 2（n510） was incubated with Enterococcus faecalis for 3 weeks, and then filled with PBS; Group 3（n520） was obturated orthograde with a paste of OrthoM TA（BioM TA, Seoul, Korea） and PBS; and Group 4（n520） was incubated with E. faecalis for 3 weeks and then obturated with OrthoM TA–PBS paste. Following their treatments, the coronal openings were sealed with PBS-soaked cotton and intermediate restorative material（IRM）, and the roots were then stored in PBS for 1, 2, 4, 8 or 16 weeks. After each incubation period, the roots were split and their dentin/MTA interfaces examined in both longitudinal and horizontal directions by SEM. There appeared to be an increase in intratubular mineralization over time in the OrthoM TA-filled roots（Groups 3 and 4）. Furthermore, there was a gradual entombment of bacteria within the dentinal tubules in the E. faecalis inoculated MTA-filled roots（Group 4）. Therefore, the orthograde obturation of root canals with OrthoM TA mixed with PBS may create a favorable environment for bacterial entombment by intratubular mineralization.

关键词： bacterial entombment intratubular mineralization orthograde canal obturation scanning electron microscopy tag-like structure

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Switching-on of serotonergic calcium signaling in activated hepatic stellate cells

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World Journal of Gastroenterology 2011年第2期17卷 164-173页

作者： Kyu-Sang Park Pyo-Jin Sin Dong Hyeon Lee Seung-Kuy Cha Min-Jeong Kim Na-hyun Kim Soon-Koo Baik Seong-Woo Jeong In Deok kong Department of Physiology and Institute of Lifelong Health Yonsei University Wonju College of Medicine Department of Physiology College of MedicinePochon CHA University Department of Basic Nursing Science Keimyung University College of Nursing Department of Internal Medicine Yonsei University Wonju College of Medicine

AIM:To investigate serotonergic Ca 2+ signaling and the expression of 5-hydroxytryptamine(5-HT) receptors,as well as Ca 2+ transporting proteins,in hepatic stellate cells(HSCs) . METHODS:The intracellular Ca 2+ concentration([Ca 2+ ]i) of isolated rat HSCs was measured with a fluorescence microscopic imaging *** PCR was per-formed to determine the transcriptional levels of 5-HT receptors and endoplasmic reticulum(ER) proteins involved in Ca 2+ storage and release in cultured rat HSCs. RESULTS:Distinct from quiescent cells,activated HSCs exhibited[Ca 2+ ]i transients following treatment with 5-HT,which was abolished by U-73122,a phospholipase C *** of 5-HT2A and 5-HT2B receptors,but not 5-HT3,was prominent during trans-differentiation of *** with ritanserin,a 5-HT2 antagonist,inhibited[Ca 2+ ]i changes upon application of *** of type 1 inositol-5'-triphosphate receptor and type 2 sarcoplasmic/endoplasmic reticulum Ca 2+ ATPase were also increased during activation of HSCs and serve as the major isotypes for ER Ca 2+ storage and release in activated *** 2+ binding chaperone proteins of the ER,including calreticulin,calnexin and calsequestrin,were up-regulated following activation of HSCs. CONCLUSION:The appearance of 5-HT-induced[Ca 2+ ]i response accompanied by upregulation of metabotropic 5-HT2 receptors and Ca 2+ transporting/chaperone ER proteins may participate in the activating process of HSCs.

关键词：肝星状细胞细胞激活钙信号血清素造血干细胞开关显微成像系统羟色胺

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High-throughput discovery of plastid genes causing albino phenotypes in ornamental chimeric plants

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Horticulture Research 2023年第1期10卷 249-259页

作者： hyun-Seung Park Jae-Hyeon Jeon Woohyeon Cho Yeonjeong Lee jee Young Park Jiseok Kim Young Sang Park hyun Jo Koo Jung Hwa Kang Taek Joo Lee Sang Hoon Kim Jin-Baek Kim Hae-Yun Kwon Suk-Hwan Kim Nam-Chon Paek Geupil Jang Jeong-Yong Suh Tae-Jin Yang Department of Agriculture Forestry and BioresourcesResearch Institute of Agriculture and Life Sciencesand Plant Genomics and Breeding InstituteCollege of Agriculture and Life SciencesSeoul National UniversitySeoul08826Republic of Korea Department of Integrative Biological Sciences and Industry Sejong UniversitySeoul 05006Korea Hantaek Botanical Garden YonginGyeonggi-do17183Republic of Korea Radiation Breeding Research Team Advanced Radiation Technology InstituteKorea Atomic Energy Research InstituteJeongeup 56212Korea Special Forest Resources Division National Institute of Forest ScienceSuwon 16631Korea School of Biological Sciences and Technology Chonnam National UniversityGwangjuSouth Korea Department of Agricultural Biotechnology and Research Institute of Agriculture and Life Sciences Seoul National UniversitySeoul 08826Korea

Chimeric plants composed of green and albino tissues have great ornamental *** unveil the functional genes responsible for albino phenotypes in chimeric plants,we inspected the complete plastid genomes(plastomes)in green and albino leaf tissues from 23 ornamental chimeric plants belonging to 20 species,including monocots,dicots,and *** nine chimeric plants,plastomes were identical between green and albino ***,another 14 chimeric plants were heteroplasmic,showing a mutation between green and albino *** identified 14 different point mutations in eight functional plastid genes related to plastid-encoded RNA polymerase(rpo)or photosystems which caused albinism in the chimeric *** them,12 were deleterious mutations in the target genes,in which early termination appeared due to small deletion-mediated frameshift or single nucleotide *** was single nucleotide substitution in an intron of the ycf3 and the other was a missense mutation in coding region of the rpoC2 *** inspected chlorophyll structure,protein functional model of the rpoC2,and expression levels of the related genes in green and albino tissues of Reynoutria japonica.A single amino acid change,histidine-to-proline substitution,in the rpoC2 protein may destabilize the peripheral helix of plastid-encoded RNA polymerase,impairing the biosynthesis of the photosynthesis system in the albino tissue of *** chimera plant.

关键词： plast substitution ornamental

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