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Nie Z, Guery L, Molinero EB, Juergens P, van den Hooven TJ, Wang Y, Jimenez Galan A, Planken PCM, Silva REF, Kraus PM. Following the Nonthermal Phase Transition in Niobium Dioxide by Time-Resolved Harmonic Spectroscopy. Phys Rev Lett 2023; 131:243201. [PMID: 38181131 DOI: 10.1103/physrevlett.131.243201] [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: 03/31/2023] [Revised: 06/30/2023] [Accepted: 10/26/2023] [Indexed: 01/07/2024]
Abstract
Photoinduced phase transitions in correlated materials promise diverse applications from ultrafast switches to optoelectronics. Resolving those transitions and possible metastable phases temporally are key enablers for these applications, but challenge existing experimental approaches. Extreme nonlinear optics can help probe phase changes, as higher-order nonlinearities have higher sensitivity and temporal resolution to band structure and lattice deformations. Here the ultrafast transition from the semiconducting to the metallic phases in polycrystalline thin-film NbO_{2} is investigated by time-resolved harmonic spectroscopy. The emission strength of all harmonic orders shows a steplike suppression when the excitation fluence exceeds a threshold (∼11-12 mJ/cm^{2}), below the fluence required for the thermal transition-a signature of the nonthermal emergence of a metallic phase within 100±20 fs. This observation is backed by full ab initio simulations as well as a 1D chain model of high-harmonic generation from both phases. Our results demonstrate femtosecond harmonic probing of phase transitions and nonthermal dynamics in solids.
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Affiliation(s)
- Z Nie
- Advanced Research Center for Nanolithography, Science Park 106, 1098 XG Amsterdam, The Netherlands
| | - L Guery
- Advanced Research Center for Nanolithography, Science Park 106, 1098 XG Amsterdam, The Netherlands
| | - E B Molinero
- Instituto de Ciencia de Materiales de Madrid, Consejo Superior de Investigaciones Científicas (ICMM-CSIC), E-28049 Madrid, Spain
| | - P Juergens
- Advanced Research Center for Nanolithography, Science Park 106, 1098 XG Amsterdam, The Netherlands
- Max-Born-Institute for Nonlinear Optics and Short Pulse Spectroscopy, Max-Born-Strasse 2A, D-12489 Berlin, Germany
| | - T J van den Hooven
- Advanced Research Center for Nanolithography, Science Park 106, 1098 XG Amsterdam, The Netherlands
| | - Y Wang
- School of Physics and Electronic Engineering, Taishan University 525 Dongyue Street, Tai'an, Shandong, China
| | - A Jimenez Galan
- Max-Born-Institute for Nonlinear Optics and Short Pulse Spectroscopy, Max-Born-Strasse 2A, D-12489 Berlin, Germany
| | - P C M Planken
- Advanced Research Center for Nanolithography, Science Park 106, 1098 XG Amsterdam, The Netherlands
- Van der Waals-Zeeman Institute, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
| | - R E F Silva
- Instituto de Ciencia de Materiales de Madrid, Consejo Superior de Investigaciones Científicas (ICMM-CSIC), E-28049 Madrid, Spain
- Max-Born-Institute for Nonlinear Optics and Short Pulse Spectroscopy, Max-Born-Strasse 2A, D-12489 Berlin, Germany
| | - P M Kraus
- Advanced Research Center for Nanolithography, Science Park 106, 1098 XG Amsterdam, The Netherlands
- Department of Physics and Astronomy, and LaserLaB, Vrije Universiteit, De Boelelaan 1105,1081 HV Amsterdam, The Netherlands
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Zhao J, Wang R, Nie Z, Wu F, Li W, Li C, Li H. [Anatomical relationship between the brachiocephalic trunk and the trachea and the clinical implications]. Nan Fang Yi Ke Da Xue Xue Bao 2023; 43:970-974. [PMID: 37439169 DOI: 10.12122/j.issn.1673-4254.2023.06.12] [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: 07/14/2023]
Abstract
OBJECTIVE To observe the anatomical features and relative position of the brachiocephalic trunk and the trachea to provide an anatomical basis for diagnosis and treatment of mechanical airway obstruction and for facilitating the performance of tracheotomy. METHODS A total of 91 formalin- fixed adult cadavers (70 male and 21 female) were used in this study. The whole length of the larynx and the trachea were separated and exposed from the neck to the chest, followed by separation of the aortic arch and its 3 branches to observe the anatomical position of the brachiocephalic trunk and the trachea. RESULTS The brachiocephalic trunk and the trachea did not intersect in 3.30%, partially intersected in 71.43%, and completely intersected in 25.27% of the 91 cadaveric specimens. The male specimens all showed greater outer diameter of the aortic arch, the brachiocephalic trunk and the trachea with a greater length of the trachea than the female specimens (P < 0.05), while the distances from the aortic arch to the brachiocephalic trunk or the cricoid cartilage did not differ significantly between them (P > 0.05). The number of the tracheal cartilage rings above the brachiocephalic trunk ranged from 3 to 10, and the mean number did not differ significantly between the male and female specimens (P > 0.05). CONCLUSION The brachiocephalic trunk has complex anatomical relationship with the trachea, and caution should be taken to avoid injuries of the brachiocephalic trunk and the aortic arch in the diagnosis and treatment of mechanical respiratory obstruction and during tracheotomy.
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Affiliation(s)
- J Zhao
- Department of Human Anatomy, Wannan Medical College, Wuhu 241002, China
| | - R Wang
- Graduate School, Wannan Medical College, Wuhu 241002, China
| | - Z Nie
- Graduate School, Wannan Medical College, Wuhu 241002, China
| | - F Wu
- Department of Human Anatomy, Wannan Medical College, Wuhu 241002, China
| | - W Li
- Graduate School, Wannan Medical College, Wuhu 241002, China
| | - C Li
- Graduate School, Wannan Medical College, Wuhu 241002, China
| | - H Li
- Department of Human Anatomy, Wannan Medical College, Wuhu 241002, China
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Liu H, Chen X, Huang M, Yu X, Gan Y, Wang J, Chen Q, Nie Z, Ge H. Screen time and childhood attention deficit hyperactivity disorder: a meta-analysis. Rev Environ Health 2023:reveh-2022-0262. [PMID: 37163581 DOI: 10.1515/reveh-2022-0262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Accepted: 04/24/2023] [Indexed: 05/12/2023]
Abstract
OBJECTIVES The association between screen time and attention deficit hyperactivity disorder (ADHD) has been controversial. This study sheds light on the contentious correlation between screen time and ADHD. CONTENT Until August 2022, electronic searches of the PubMed, Embase, and Web of Science databases were carried out. The combined effect value odds ratios (OR) and 95 % confidence interval (95 % CI) were calculated for the meta-analysis using Stata 12.0. There were 81,234 children in the nine studies that made up this meta-analysis which included 28,997 children with ADHD and 52,237 healthy controls. When compared with the screen time <2 h/d, the OR (95 % CI) value of screen time and ADHD in the screen time ≥2 h/d group was 1.51 (1.20-1.90). SUMMARY AND OUTLOOK Based on the current meta-analysis results, our study found a positive correlation between screen time and the risk of ADHD. Excessive screen exposure may significantly contribute to the development of ADHD in children. Therefore, it is necessary to reduce screen time per day in children to prevent the occurrence of ADHD.
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Affiliation(s)
- Hezuo Liu
- Ninghai Maternal and Child Health Hospital, Ningbo, China
| | - Xiaorong Chen
- Ninghai Maternal and Child Health Hospital, Ningbo, China
| | - Minhui Huang
- Ninghai Maternal and Child Health Hospital, Ningbo, China
| | - Xiaomin Yu
- Child Health Department, Ninghai Maternal and Child Health Hospital, Ningbo, China
| | - Ye Gan
- Ninghai Maternal and Child Health Hospital, Ningbo, China
| | - Ji Wang
- Ninghai Maternal and Child Health Hospital, Ningbo, China
| | - Qiujin Chen
- Wuxi City Disease Prevention Control Center, Wuxi, China
| | - Zhipeng Nie
- Ninghai County Center for Disease Control and Prevention, Ningbo, China
| | - Haijing Ge
- Ninghai Maternal and Child Health Hospital, Ningbo, China
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Nie Z, Wang C, Chen J, Ji Y, Zhang H, Zhao F, Zhou X, Guan MX. Abnormal morphology and function in retinal ganglion cells derived from patients-specific iPSCs generated from individuals with Leber's hereditary optic neuropathy. Hum Mol Genet 2022; 32:231-243. [PMID: 35947995 PMCID: PMC9840204 DOI: 10.1093/hmg/ddac190] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 07/11/2022] [Accepted: 08/07/2022] [Indexed: 01/19/2023] Open
Abstract
Leber's hereditary optic neuropathy (LHON) is a maternally inherited eye disease that results from degeneration of retinal ganglion cells (RGC). Mitochondrial ND4 11778G > A mutation, which affects structural components of complex I, is the most prevalent LHON-associated mitochondrial DNA (mtDNA) mutation worldwide. The m.11778G > A mutation is the primary contributor underlying the development of LHON and X-linked PRICKLE3 allele (c.157C > T, p.Arg53Trp) linked to biogenesis of ATPase interacts with m.11778G > A mutation to cause LHON. However, the lack of appropriate cell and animal models of LHON has been significant obstacles for deep elucidation of disease pathophysiology, specifically the tissue-specific effects. Using RGC-like cells differentiated from induced pluripotent stem cells (iPSCs) from members of one Chinese family (asymptomatic subjects carrying only m.11778G > A mutation or PRICKLE3 p.Arg53Trp mutation, symptomatic individuals bearing both m.11778G > A and PRICKLE3 p.Arg53Trp mutations and control lacking these mutations), we demonstrated the deleterious effects of mitochondrial dysfunctions on the morphology and functions of RGCs. Notably, iPSCs bearing only m.11778G > A or p.Arg53Trp mutation exhibited mild defects in differentiation to RGC-like cells. The RGC-like cells carrying only m.11778G > A or p.Arg53Trp mutation displayed mild defects in RGC morphology, including the area of soma and numbers of neurites, electrophysiological properties, ATP contents and apoptosis. Strikingly, those RGC-like cells derived from symptomatic individuals harboring both m.11778G > A and p.Arg53Trp mutations displayed greater defects in the development, morphology and functions than those in cells bearing single mutation. These findings provide new insights into pathophysiology of LHON arising from RGC deficiencies caused by synergy between m.11778G > A and PRICKLE3 p.Arg53Trp mutation.
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Affiliation(s)
| | | | | | - Yanchun Ji
- Division of Medical Genetics and Genomics, The Children’s Hospital, Zhejiang University School of Medicine and National Clinical Research Center for Child Health, Hangzhou, Zhejiang, China,Institute of Genetics and Department of Human Genetics, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Hongxing Zhang
- Department of Ophthalmology, The First Affiliated Hospital, Shandong First Medical University, Jinan, Shandong, China
| | - Fuxin Zhao
- School of Optometry and Ophthalmology and Eye Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Xiangtian Zhou
- School of Optometry and Ophthalmology and Eye Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Min-Xin Guan
- To whom correspondence should be addressed at: Institute of Genetics, Zhejiang University School of Medicine, 866 Yuhangtang Road, Hangzhou, Zhejiang 310058, China. Tel: 86-571-88206916; Fax: 86-571-88982377;
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5
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Jia C, Zhang Z, Wang J, Nie Z. Silymarin protects the rats against paraquat-induced acute kidney injury via Nrf2. Hum Exp Toxicol 2022; 41:9603271221074334. [PMID: 35128959 DOI: 10.1177/09603271221074334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
BACKGROUND Paraquat (PQ) poisoning induces severe acute kidney injury and causes extremely high rate of death. In this study, we aimed to investigate the protective effects of silymarin on PQ-induced acute kidney injury and explore the underlying mechanisms. METHODS A rat model was established through intraperitoneal injection of PQ. Rats were administrated with saline or silymarin for 3 days. Then, survival rate, physiological parameters, and renal injury score were evaluated. The apoptosis and oxidative stress in kidney tissues were determined through hematoxylin and eosin staining, quantitative reverse transcription polymerase chain reaction, Western blot, and enzyme-linked immunosorbent assays. RESULTS Silymarin administration could significantly increase the survival rate of PQ-poisoned rats. It was found that silymarin treatment improved renal function, decreased injury score in kidney tissues, and inhibited the apoptosis and oxidative stress in PQ-induced acute kidney injury through the activating the signaling pathway of Nrf2 and promoting its nuclear translocation. CONCLUSION Silymarin exhibited a protective effect against PQ-induced kidney injury, suggesting that treatment with this flavonoid could be a potential therapeutic agent for the treatment of acute kidney injury.
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Affiliation(s)
- C Jia
- Department of Emergency, 585241Xingtai People's Hospital of Hebei Province, Xingtai, China
| | - Z Zhang
- Department of Emergency, 585241Xingtai People's Hospital of Hebei Province, Xingtai, China
| | - J Wang
- Department of Emergency, 585241Xingtai People's Hospital of Hebei Province, Xingtai, China
| | - Z Nie
- Department of Emergency, 585241Xingtai People's Hospital of Hebei Province, Xingtai, China
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Jin X, Zhang Z, Nie Z, Wang C, Meng F, Yi Q, Chen M, Sun J, Zou J, Jiang P, Guan MX. An animal model for mitochondrial tyrosyl-tRNA synthetase deficiency reveals links between oxidative phosphorylation and retinal function. J Biol Chem 2021; 296:100437. [PMID: 33610547 PMCID: PMC8010715 DOI: 10.1016/j.jbc.2021.100437] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [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: 09/09/2020] [Revised: 02/09/2021] [Accepted: 02/16/2021] [Indexed: 12/13/2022] Open
Abstract
Mitochondria maintain a distinct pool of ribosomal machinery, including tRNAs and tRNAs activating enzymes, such as mitochondrial tyrosyl-tRNA synthetase (YARS2). Mutations in YARS2, which typically lead to the impairment of mitochondrial protein synthesis, have been linked to an array of human diseases including optic neuropathy. However, the lack of YARS2 mutation animal model makes us difficult to elucidate the pathophysiology underlying YARS2 deficiency. To explore this system, we generated YARS2 knockout (KO) HeLa cells and zebrafish using CRISPR/Cas9 technology. We observed the aberrant tRNATyr aminoacylation overall and reductions in the levels in mitochondrion- and nucleus-encoding subunits of oxidative phosphorylation system (OXPHOS), which were especially pronounced effects in the subunits of complex I and complex IV. These deficiencies manifested the decreased levels of intact supercomplexes overall. Immunoprecipitation assays showed that YARS2 bound to specific subunits of complex I and complex IV, suggesting the posttranslational stabilization of OXPHOS. Furthermore, YARS2 ablation caused defects in the stability and activities of OXPHOS complexes. These biochemical defects could be rescued by the overexpression of YARS2 cDNA in the YARS2KO cells. In zebrafish, the yars2KO larva conferred deficient COX activities in the retina, abnormal mitochondrial morphology, and numbers in the photoreceptor and retinal ganglion cells. The zebrafish further exhibited the retinal defects affecting both rods and cones. Vision defects in yars2KO zebrafish recapitulated the clinical phenotypes in the optic neuropathy patients carrying the YARS2 mutations. Our findings highlighted the critical role of YARS2 in the stability and activity of OXPHOS and its pathological consequence in vision impairments.
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Affiliation(s)
- Xiaofen Jin
- Key Laboratory of Reproductive Genetics, Ministry of Education of PRC, The Woman's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China; Division of Medical Genetics and Genomics, The Children's Hospital, Zhejiang University School of Medicine, and National Clinic Research Center for Child Health, Hangzhou, Zhejiang, China; Institute of Genetics, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Zengming Zhang
- Institute of Genetics, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Zhipeng Nie
- Institute of Genetics, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Chenghui Wang
- Institute of Genetics, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Feilong Meng
- Division of Medical Genetics and Genomics, The Children's Hospital, Zhejiang University School of Medicine, and National Clinic Research Center for Child Health, Hangzhou, Zhejiang, China; Institute of Genetics, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Qiuzi Yi
- Institute of Genetics, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Mengquan Chen
- Department of Lab Medicine, Wenzhou Hospital of Traditional Chinese Medicine, Wenzhou, Zhejiang, China
| | - Jiji Sun
- Institute of Genetics, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Jian Zou
- Insitute of Translational Medicine, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Pingping Jiang
- Division of Medical Genetics and Genomics, The Children's Hospital, Zhejiang University School of Medicine, and National Clinic Research Center for Child Health, Hangzhou, Zhejiang, China; Institute of Genetics, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China; Zhejiang Provincial Key Laboratory of Genetic & Developmental Disorders, Zhejiang Univesity, Hangzhou, Zhejiang, China.
| | - Min-Xin Guan
- Key Laboratory of Reproductive Genetics, Ministry of Education of PRC, The Woman's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China; Division of Medical Genetics and Genomics, The Children's Hospital, Zhejiang University School of Medicine, and National Clinic Research Center for Child Health, Hangzhou, Zhejiang, China; Institute of Genetics, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China; Zhejiang Provincial Key Laboratory of Genetic & Developmental Disorders, Zhejiang Univesity, Hangzhou, Zhejiang, China; Division of Mitochondrial Biomedicine, Joint Institute of Genetics and Genome Medicine between Zhejiang University and University of Toronto, Hangzhou, Zhejiang, China.
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Lei L, He Y, Guo Z, Liu B, Liu J, Nie Z, Chen S, Liu Y, Chen J. A simple nomogram to predict contrast-induced acute kidney injury in patients with congestive heart failure undergoing coronary angiography. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.2554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
Patients with congestive heart failure (CHF) are vulnerable to contrast-induced acute kidney injury (CI-AKI), but few prediction models are currently available.
Objectives
We aimed to establish a simple nomogram for CI-AKI risk assessment for patients with CHF undergoing coronary angiography.
Methods
A total of 1876 consecutive patients with CHF (defined as New York Heart Association functional class II-IV or Killip class II-IV) were enrolled and randomly (2:1) assigned to a development cohort and a validation cohort. The endpoint was CI-AKI defined as serum creatinine elevation of ≥0.3 mg/dL or 50% from baseline within the first 48–72 hours following the procedure. Predictors for the nomogram were selected by multivariable logistic regression with a stepwise approach. The discriminative power was assessed using the area under the receiver operating characteristic (ROC) curve and was compared with the classic Mehran score in the validation cohort. Calibration was assessed using the Hosmer–Lemeshow test and 1000 bootstrap samples.
Results
The incidence of CI-AKI was 9.06% (n=170) in the total sample, 8.64% (n=109) in the development cohort and 9.92% (n=61) in the validation cohort (p=0.367). The simple nomogram including four predictors (age, intra-aortic balloon pump, acute myocardial infarction and chronic kidney disease) demonstrated a similar predictive power as the Mehran score (area under the curve: 0.80 vs 0.75, p=0.061), as well as a well-fitted calibration curve.
Conclusions
The present simple nomogram including four predictors is a simple and reliable tool to identify CHF patients at risk of CI-AKI, whereas further external validations are needed.
Figure 1
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- L Lei
- Guangdong General Hospital Guangdong Cardiovascular Institute, Guangzhou, China
| | - Y He
- Guangdong General Hospital Guangdong Cardiovascular Institute, Guangzhou, China
| | - Z Guo
- Guangdong General Hospital Guangdong Cardiovascular Institute, Guangzhou, China
| | - B Liu
- Guangdong General Hospital Guangdong Cardiovascular Institute, Guangzhou, China
| | - J Liu
- Guangdong General Hospital Guangdong Cardiovascular Institute, Guangzhou, China
| | - Z Nie
- Guangdong General Hospital Guangdong Cardiovascular Institute, Guangzhou, China
| | - S Chen
- Guangdong General Hospital Guangdong Cardiovascular Institute, Guangzhou, China
| | - Y Liu
- Guangdong General Hospital Guangdong Cardiovascular Institute, Guangzhou, China
| | - J Chen
- Guangdong General Hospital Guangdong Cardiovascular Institute, Guangzhou, China
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Yu J, Liang X, Ji Y, Ai C, Liu J, Zhu L, Nie Z, Jin X, Wang C, Zhang J, Zhao F, Mei S, Zhao X, Zhou X, Zhang M, Wang M, Huang T, Jiang P, Guan MX. PRICKLE3 linked to ATPase biogenesis manifested Leber's hereditary optic neuropathy. J Clin Invest 2020; 130:4935-4946. [PMID: 32516135 PMCID: PMC7456240 DOI: 10.1172/jci134965] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Accepted: 06/04/2020] [Indexed: 12/16/2022] Open
Abstract
Leber's hereditary optic neuropathy (LHON) is a maternally inherited eye disease. X-linked nuclear modifiers were proposed to modify the phenotypic manifestation of LHON-associated mitochondrial DNA (mtDNA) mutations. By whole-exome sequencing, we identified the X-linked LHON modifier (c.157C>T, p.Arg53Trp) in PRICKLE3 encoding a mitochondrial protein linked to biogenesis of ATPase in 3 Chinese families. All affected individuals carried both ND4 11778G>A and p.Arg53Trp mutations, while subjects bearing only a single mutation exhibited normal vision. The cells carrying the p.Arg53Trp mutation exhibited defective assembly, stability, and function of ATP synthase, verified by PRICKLE3-knockdown cells. Coimmunoprecipitation indicated the direct interaction of PRICKLE3 with ATP synthase via ATP8. Strikingly, cells bearing both p.Arg53Trp and m.11778G>A mutations displayed greater mitochondrial dysfunction than those carrying only a single mutation. This finding indicated that the p.Arg53Trp mutation acted in synergy with the m.11778G>A mutation and deteriorated mitochondrial dysfunctions necessary for the expression of LHON. Furthermore, we demonstrated that Prickle3-deficient mice exhibited pronounced ATPase deficiencies. Prickle3-knockout mice recapitulated LHON phenotypes with retinal deficiencies, including degeneration of retinal ganglion cells and abnormal vasculature. Our findings provided new insights into the pathophysiology of LHON that were manifested by interaction between mtDNA mutations and X-linked nuclear modifiers.
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Affiliation(s)
- Jialing Yu
- Division of Medical Genetics and Genomics, Children’s Hospital, Zhejiang University School of Medicine and National Clinical Research Center for Child Health, Hangzhou, China
- Institute of Genetics and
- Department of Human Genetics, Zhejiang University School of Medicine, Hangzhou, China
- Key Laboratory of Reproductive Genetics, Ministry of Education, Hangzhou, China
| | - Xiaoyang Liang
- Institute of Genetics and
- Department of Human Genetics, Zhejiang University School of Medicine, Hangzhou, China
| | - Yanchun Ji
- Division of Medical Genetics and Genomics, Children’s Hospital, Zhejiang University School of Medicine and National Clinical Research Center for Child Health, Hangzhou, China
- Institute of Genetics and
- Department of Human Genetics, Zhejiang University School of Medicine, Hangzhou, China
| | - Cheng Ai
- Institute of Genetics and
- Department of Human Genetics, Zhejiang University School of Medicine, Hangzhou, China
| | - Junxia Liu
- Institute of Genetics and
- Department of Human Genetics, Zhejiang University School of Medicine, Hangzhou, China
| | - Ling Zhu
- Division of Medical Genetics and Genomics, Children’s Hospital, Zhejiang University School of Medicine and National Clinical Research Center for Child Health, Hangzhou, China
- Institute of Genetics and
- Department of Human Genetics, Zhejiang University School of Medicine, Hangzhou, China
| | - Zhipeng Nie
- Institute of Genetics and
- Department of Human Genetics, Zhejiang University School of Medicine, Hangzhou, China
| | - Xiaofen Jin
- Institute of Genetics and
- Department of Human Genetics, Zhejiang University School of Medicine, Hangzhou, China
- Key Laboratory of Reproductive Genetics, Ministry of Education, Hangzhou, China
| | - Chenghui Wang
- Institute of Genetics and
- Department of Human Genetics, Zhejiang University School of Medicine, Hangzhou, China
| | - Juanjuan Zhang
- Institute of Genetics and
- School of Optometry and Ophthalmology and Eye Hospital, Wenzhou Medical University, Wenzhou, China
| | - Fuxin Zhao
- School of Optometry and Ophthalmology and Eye Hospital, Wenzhou Medical University, Wenzhou, China
| | - Shuang Mei
- Institute of Genetics and
- Department of Human Genetics, Zhejiang University School of Medicine, Hangzhou, China
| | - Xiaoxu Zhao
- Division of Medical Genetics and Genomics, Children’s Hospital, Zhejiang University School of Medicine and National Clinical Research Center for Child Health, Hangzhou, China
- Institute of Genetics and
- Department of Human Genetics, Zhejiang University School of Medicine, Hangzhou, China
| | - Xiangtian Zhou
- School of Optometry and Ophthalmology and Eye Hospital, Wenzhou Medical University, Wenzhou, China
| | - Minglian Zhang
- Department of Ophthalmology, Hebei Provincial Eye Hospital, Xingtai, China
| | - Meng Wang
- Division of Medical Genetics and Genomics, Children’s Hospital, Zhejiang University School of Medicine and National Clinical Research Center for Child Health, Hangzhou, China
- Institute of Genetics and
- Department of Human Genetics, Zhejiang University School of Medicine, Hangzhou, China
| | - Taosheng Huang
- Division of Human Genetics, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, USA
| | - Pingping Jiang
- Division of Medical Genetics and Genomics, Children’s Hospital, Zhejiang University School of Medicine and National Clinical Research Center for Child Health, Hangzhou, China
- Institute of Genetics and
- Department of Human Genetics, Zhejiang University School of Medicine, Hangzhou, China
| | - Min-Xin Guan
- Division of Medical Genetics and Genomics, Children’s Hospital, Zhejiang University School of Medicine and National Clinical Research Center for Child Health, Hangzhou, China
- Institute of Genetics and
- Department of Human Genetics, Zhejiang University School of Medicine, Hangzhou, China
- Key Laboratory of Reproductive Genetics, Ministry of Education, Hangzhou, China
- Joint Institute of Genetics and Genomic Medicine, Zhejiang University and University of Toronto, Zhejiang University, Hangzhou, China
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Yang F, Zhu B, Liu J, Liu Y, Jiang C, Sheng Q, Qiu J, Nie Z. The effect of acetylation on the protein stability of BmApoLp-III in the silkworm, Bombyx mori. Insect Mol Biol 2020; 29:104-111. [PMID: 31390480 DOI: 10.1111/imb.12613] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Revised: 05/26/2019] [Accepted: 07/30/2019] [Indexed: 06/10/2023]
Abstract
Acetylation is an important, reversible posttranslational modification to a protein. In a previous study, we found that there were a large number of acetylated sites in various nutrient storage proteins of the silkworm haemolymph. In this study, we confirmed that acetylation can affect the stability of nutrient storage protein Bombyx mori apolipophorin-III (BmApoLp-III). First, the expression of BmApoLp-III could be upregulated when BmN cells were treated with the deacetylase inhibitor panobinostat (LBH589); similarly, the expression was downregulated when the cells were treated with the acetylase inhibitor C646. Furthermore, the increase in acetylation by LBH589 could inhibit the degradation and improve the accumulation of BmApoLp-III in BmN cells treated with cycloheximide and MG132 respectively. Moreover, we found that an increase in acetylation could decrease the ubiquitination of BmApoLp-III and vice versa; therefore, we predicted that acetylation could improve the stability of BmApoLp-III by competing for ubiquitination and inhibiting the protein degradation pathway mediated by ubiquitin. Additionally, BmApoLp-III had an antiapoptosis function that increased after LBH589 treatment, which might have been due to the improved protein stability after acetylation. These results have laid the foundation for further study on the mechanism of acetylation in regulating the storage and utilization of silkworm nutrition.
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Affiliation(s)
- F Yang
- College of Life Sciences and medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - B Zhu
- College of Life Sciences and medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - J Liu
- School of Forestry and Biotechnology, Zhejiang A&F University, Linan, China
| | - Y Liu
- Zhejiang Economic & Trade Polytechnic, Hangzhou, China
| | - C Jiang
- College of Life Sciences and medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - Q Sheng
- College of Life Sciences and medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - J Qiu
- College of Life Sciences and medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - Z Nie
- College of Life Sciences and medicine, Zhejiang Sci-Tech University, Hangzhou, China
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10
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Zheng XW, Nie Z, Zheng Z, Liu SF, Feng F. [Analysis of spatial-temporal distribution of pesticide poisoning in Quzhou, 2013-2017]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2019; 37:269-272. [PMID: 31177692 DOI: 10.3760/cma.j.issn.1001-9391.2019.04.006] [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 analysis the epidemic and spatial characteristics of pesticide poisoning in Quzhou during 2013-2017, and to provide scientific basis for the prevention and control of influenza in Quzhou in the future. Methods: The incidence data of pesticide poisoning from January 1, 2013 to December 31, 2017 in Quzhou collected from China Information System For Disease Control And Prevention. The descriptive analysis conducted by using SPSS18.0 software, and the Sa T Scan 9.2 software was used to complete space-time scan. Finally, ArcMap10.2 software was used to visualize the results. Results: There were 1819 cases of pesticide poisoning in Quzhou from 2007 to 2016, among which 298 cases were reported for productive poisoning, the incidence peak was from August to September, the highest number of patients in productive poisoning was in the age group of 46-60 years old and over 61 years old, with 109 patients in each group, and the number of male patients was significantly higher than that of female (χ(2)=63.857, P<0.01) . 1521 cases of non-productive pesticide poisoning were reported, among which the proportion of suicide poisoning (57.65%) was far higher than that of accidental poisoning (28.97%) , the number of female suicide poisoning was higher than that of male (χ(2)=5.510, P=0.019) , the proportion of accidental poisoning was the highest in the ≤15 years age group (89.00%, 89/100) , furthermore the number of suicide poisoning was the highest in the ≥61 years age group (314) . The incidence of pesticide poisoning could be detected by temporal-spatial scanning statistics, the time clustering is from August to September, the spatial clustering is in Jiangshan city, there are consistent with the descriptive of pesticide poisoning. Conclusion: The pesticide poisoning in Quzhou is mainly caused by non-productive suicide poisoning, and the spatial clustering is in Jiangshan city. Relevant departments should carry out targeted prevention and control measures according to the different characteristics of pesticide poisoning in clustered and non-clustered areas.
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Affiliation(s)
- X W Zheng
- Quzhou Center for Disease Control and Prevention, Quzhou 324000, China
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11
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Wu YP, Hua JF, Zhou Z, Zhang J, Liu S, Peng B, Fang Y, Nie Z, Ning XN, Pai CH, Du YC, Lu W, Zhang CJ, Mori WB, Joshi C. Phase Space Dynamics of a Plasma Wakefield Dechirper for Energy Spread Reduction. Phys Rev Lett 2019; 122:204804. [PMID: 31172777 DOI: 10.1103/physrevlett.122.204804] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2019] [Revised: 04/19/2019] [Indexed: 06/09/2023]
Abstract
Plasma-based accelerators have made impressive progress in recent years. However, the beam energy spread obtained in these accelerators is still at the ∼1% level, nearly one order of magnitude larger than what is needed for challenging applications like coherent light sources or colliders. In plasma accelerators, the beam energy spread is mainly dominated by its energy chirp (longitudinally correlated energy spread). Here we demonstrate that when an initially chirped electron beam from a linac with a proper current profile is sent through a low-density plasma structure, the self-wake of the beam can significantly reduce its energy chirp and the overall energy spread. The resolution-limited energy spectrum measurements show at least a threefold reduction of the beam energy spread from 1.28% to 0.41% FWHM with a dechirping strength of ∼1 (MV/m)/(mm pC). Refined time-resolved phase space measurements, combined with high-fidelity three-dimensional particle-in-cell simulations, further indicate the real energy spread after the dechirper is only about 0.13% (FWHM), a factor of 10 reduction of the initial energy spread.
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Affiliation(s)
- Y P Wu
- Department of Engineering Physics, Tsinghua University, Beijing 100084, China
| | - J F Hua
- Department of Engineering Physics, Tsinghua University, Beijing 100084, China
| | - Z Zhou
- Department of Engineering Physics, Tsinghua University, Beijing 100084, China
| | - J Zhang
- Department of Engineering Physics, Tsinghua University, Beijing 100084, China
| | - S Liu
- Department of Engineering Physics, Tsinghua University, Beijing 100084, China
| | - B Peng
- Department of Engineering Physics, Tsinghua University, Beijing 100084, China
| | - Y Fang
- Department of Engineering Physics, Tsinghua University, Beijing 100084, China
| | - Z Nie
- Department of Engineering Physics, Tsinghua University, Beijing 100084, China
| | - X N Ning
- Department of Engineering Physics, Tsinghua University, Beijing 100084, China
| | - C-H Pai
- Department of Engineering Physics, Tsinghua University, Beijing 100084, China
| | - Y C Du
- Department of Engineering Physics, Tsinghua University, Beijing 100084, China
| | - W Lu
- Department of Engineering Physics, Tsinghua University, Beijing 100084, China
| | - C J Zhang
- University of Los Angeles, Los Angeles, California 90095, USA
| | - W B Mori
- University of Los Angeles, Los Angeles, California 90095, USA
| | - C Joshi
- University of Los Angeles, Los Angeles, California 90095, USA
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12
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Zhou P, Zhu P, Nie Z, Zheng S. Is Diabetes Mellitus a Risk Factor for Adverse Outcomes in Patients with Left Ventricular Assist Device? A Systematic Review and Meta-Analysis. J Heart Lung Transplant 2019. [DOI: 10.1016/j.healun.2019.01.876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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13
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Dai Y, Wang C, Nie Z, Han J, Chen T, Zhao X, Ai C, Ji Y, Gao T, Jiang P. Mutation analysis of Leber's hereditary optic neuropathy using a multi-gene panel. Biomed Rep 2017; 8:51-58. [PMID: 29387390 DOI: 10.3892/br.2017.1014] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2017] [Accepted: 10/02/2017] [Indexed: 12/22/2022] Open
Abstract
The present study investigates the spectrum and incidence of mitochondrial DNA (mtDNA) mutations associated with Leber's hereditary optic neuropathy (LHON) in a Han population using a multi-gene panel with 46 LHON-associated mutations among 13 mitochondrial genes. A total of 23 mutations were observed in a cohort of 275 patients and 281 control subjects using multi-gene panel analysis. The causative mutations associated with LHON were identified to be m.11778G>A, m.14484T>C, m.3460 G>A, m.3635G>A, m.3866T>C and m.3733G>A, responsible for 70.55% cases in the patient cohort. The secondary mutations in the Chinese LHON population were m.12811T>C, m.11696 G>A, m.3316G>A, m.3394T>C, m.14502T>C, m.3497C>T, m.3571C>T, m.12338T>C, m.14693A>G, m.4216T>C and m.15951A>G, with incidences of 5.09, 4.36, 4.00, 4.00, 4.00, 2.55, 1.82, 1.82, 1.45, 1.09 and 1.09%, respectively. Besides three hotspot genes, MT-ND1, MT-ND4 and MT-ND6, MT-ND5 also had a high incidence of secondary mutations. Those mutations reported as rare causative mutations in a European LHON population, m.3376G>A, m.3700G>A and m.4171C>A, m.10663T>C, m.13051G>A, m.14482C>G/A, m.14495A>G and m.14568C>T were undetected in the present study. The primary and secondary mutations associated with LHON in the present multi-gene panel will advance the current understanding of the clinical phenotype of LHON, and provide useful information for early diagnosis.
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Affiliation(s)
- Yu Dai
- The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, P.R. China
| | - Chenghui Wang
- Division of Medical Genetics and Genomics, The Children's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310058, P.R. China.,Institute of Genetics, Zhejiang University, and Department of Genetics, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310058, P.R. China
| | - Zhipeng Nie
- Division of Medical Genetics and Genomics, The Children's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310058, P.R. China.,Institute of Genetics, Zhejiang University, and Department of Genetics, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310058, P.R. China
| | - Jiamin Han
- Institute of Genetics, Zhejiang University, and Department of Genetics, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310058, P.R. China
| | - Ting Chen
- Division of Medical Genetics and Genomics, The Children's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310058, P.R. China
| | - Xiaoxu Zhao
- Division of Medical Genetics and Genomics, The Children's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310058, P.R. China.,Institute of Genetics, Zhejiang University, and Department of Genetics, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310058, P.R. China
| | - Cheng Ai
- Institute of Genetics, Zhejiang University, and Department of Genetics, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310058, P.R. China
| | - Yanchun Ji
- Division of Medical Genetics and Genomics, The Children's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310058, P.R. China
| | - Tao Gao
- The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, P.R. China
| | - Pingping Jiang
- Division of Medical Genetics and Genomics, The Children's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310058, P.R. China.,Institute of Genetics, Zhejiang University, and Department of Genetics, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310058, P.R. China
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14
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Wang N, Nie Z, Xing L, Yu J. Radiation-induced lung toxicity and tumor progression in patients with non-small-cell lung cancer. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx670.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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15
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Qiao L, Ru G, Mao Z, Wang C, Nie Z, Li Q, Huang-Yang Y, Zhu L, Liang X, Yu J, Jiang P. Mitochondrial DNA depletion, mitochondrial mutations and high TFAM expression in hepatocellular carcinoma. Oncotarget 2017; 8:84373-84383. [PMID: 29137431 PMCID: PMC5663603 DOI: 10.18632/oncotarget.21033] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [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] [Received: 05/19/2017] [Accepted: 08/17/2017] [Indexed: 12/16/2022] Open
Abstract
We investigated the role of mitochondrial genetic alterations in hepatocellular carcinoma by directly comparing the mitochondrial genomes of 86 matched pairs of HCC and non-tumor liver samples. Substitutions in 637 mtDNA sites were detected, comprising 89.80% transitions and 6.60% transversions. Forty-six somatic variants, including 15 novel mutations, were identified in 40.70% of tumor tissues. Of those, 21 were located in the non-coding region and 25 in the protein-coding region. Twenty-two somatic nonsynonymous changes were identified as putative pathogenic variants, including 4 truncating mutations produced by three frameshifts (MT-ATP6 8628 insC; MT-ND5 13475 T-del, and MT-CYB 14984 insA) and 1 nonsense mutation in MT-CO3 9253 G>A. Among the somatic variants, only m.13676 A>G (MT-ND5), found in only 1 tumor, was heteroplasmic. Both inherited and somatic variants were predominately located in the D-loop region and the MT-ND5 gene. Tumor/non-tumor paired analysis showed that 69% of HCC samples contained significantly reduced mtDNA, compared with 49.0% of non-tumor counterparts. In 81.40% of HCC samples, mitochondrial transcription factor A (TFAM) was enriched in tumor cells but not in adjacent non-tumor cells. Neither mtDNA depletion nor TFAM overexpression correlated with the degree of cell differentiation, though TFAM expression correlated with tumor size.
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Affiliation(s)
- Lihua Qiao
- Division of Medical Genetics and Genomics, The Children's Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Institute of Genetics, Zhejiang University and Department of Genetics, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Guoqing Ru
- Department of Pathology, The Zhejiang Provincial People's Hospital, Hangzhou, China
| | - Zhuochao Mao
- Institute of Genetics, Zhejiang University and Department of Genetics, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China.,Department of Surgical Oncology, First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Chenghui Wang
- Division of Medical Genetics and Genomics, The Children's Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Institute of Genetics, Zhejiang University and Department of Genetics, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Zhipeng Nie
- Division of Medical Genetics and Genomics, The Children's Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Institute of Genetics, Zhejiang University and Department of Genetics, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Qiang Li
- Division of Medical Genetics and Genomics, The Children's Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Institute of Genetics, Zhejiang University and Department of Genetics, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Yiyi Huang-Yang
- Institute of Genetics, Zhejiang University and Department of Genetics, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Ling Zhu
- Division of Medical Genetics and Genomics, The Children's Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Institute of Genetics, Zhejiang University and Department of Genetics, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Xiaoyang Liang
- Division of Medical Genetics and Genomics, The Children's Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Institute of Genetics, Zhejiang University and Department of Genetics, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Jialing Yu
- Institute of Genetics, Zhejiang University and Department of Genetics, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China.,School of Public Health, Zhejiang University, Hangzhou, China
| | - Pingping Jiang
- Division of Medical Genetics and Genomics, The Children's Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Institute of Genetics, Zhejiang University and Department of Genetics, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
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16
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Liu X, Nie Z, Chen J, Guo X, Ou Y, Chen G, Mai J, Gong W, Wu Y, Gao X, Qu Y, Bell E, Lin S, Zhuang J. 1193Maternal environmental tobacco smoke interacted with other factors on cardiovascular defects in a population case-control study. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.1193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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17
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Qu Y, Liu X, Bell E, Chen J, Han F, Pan W, Cen J, Ou Y, Wen S, Mai J, Nie Z, Gao X, Wu Y, Lin S, Zhuang J. P6209Perinatal outcome of fetus with prenatal diagnosed congenital heart defects, results of a cohort study from China. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.p6209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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18
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Chen X, Nie Z, Wang F, Wang J, Liu XW, Zheng J, Guo YF, Guan MX. Late onset nonsyndromic hearing loss in a Dongxiang Chinese family is associated with the 593T>C variant in the mitochondrial tRNA Phe gene. Mitochondrion 2017; 35:111-118. [PMID: 28579530 DOI: 10.1016/j.mito.2017.05.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Revised: 05/31/2017] [Accepted: 05/31/2017] [Indexed: 11/19/2022]
Abstract
We report here the clinical, genetic, molecular and biochemical characterization of a four-generation Dongxiang Chinese pedigree with suggestively maternally transmitted non-syndromic hearing loss. Five of 10 matrilineal relatives exhibited variable severity and age at onset of sensorineural hearing loss. The average ages at onset of hearing loss in matrilineal relatives of this family were 29years. Molecular analysis of their mitochondrial genomes identified the tRNAPhe 593T>C variant belonging to Asian haplogroup G2a2a. The m.593T>C variant resided at the position 17 of DHU-loop, where the position is important for the structure and function of tRNA. It was anticipated that the m.593T>C variant altered the structure and function of tRNAPhe. By using lymphoblastoid cell lines derived from the Chinese family, we showed a 46% decreases in the steady-state level of tRNAPhe in mutant cell lines. Western blotting analysis showed ∼35% reduction in the levels of mitochondrial translation in mutant cell lines carrying the m.593T>C variant. Impaired mitochondrial translation is apparently a primary contributor to the marked reduction in the rate of respiratory capacity. The respiratory deficiency lowed mitochondrial ATP production in the mutant cell lines. These data provide the evidence that mitochondrial dysfunctions caused by the m.593T>C variant lead to late-onset nonsyndromic hearing loss. Thus, our findings may provide the new insights into the understanding of pathophysiology and valuable information for management and treatment of maternally inherited hearing loss.
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Affiliation(s)
- Xiaowan Chen
- Department of Otolaryngology-Head and Neck Surgery, Lanzhou University Second Hospital, Lanzhou, Gansu730000, China; Institute of Genetics, Zhejiang University, School of Medicine, Hangzhou, Zhejiang 310058, China; Department of Otolaryngology-Head and Neck Surgery, Lanzhou University First Hospital, Lanzhou, Gansu 730000, China
| | - Zhipeng Nie
- Institute of Genetics, Zhejiang University, School of Medicine, Hangzhou, Zhejiang 310058, China
| | - Fang Wang
- Department of Otolaryngology-Head and Neck Surgery, Lanzhou University Second Hospital, Lanzhou, Gansu730000, China
| | - Jianchao Wang
- Department of Otolaryngology-Head and Neck Surgery, Lanzhou University Second Hospital, Lanzhou, Gansu730000, China
| | - Xiao-Wen Liu
- Department of Otolaryngology-Head and Neck Surgery, Lanzhou University Second Hospital, Lanzhou, Gansu730000, China
| | - Jing Zheng
- Institute of Genetics, Zhejiang University, School of Medicine, Hangzhou, Zhejiang 310058, China
| | - Yu-Fen Guo
- Department of Otolaryngology-Head and Neck Surgery, Lanzhou University Second Hospital, Lanzhou, Gansu730000, China; Health and Family Planning Commission of Gansu Province, Lanzhou, Gansu 730000, China.
| | - Min-Xin Guan
- Institute of Genetics, Zhejiang University, School of Medicine, Hangzhou, Zhejiang 310058, China; Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Zhejiang University, Hangzhou, Zhejiang 310058, China.
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Martins PAT, Alsaiari S, Julfakyan K, Nie Z, Khashab NM. Self-assembled lipoprotein based gold nanoparticles for detection and photothermal disaggregation of β-amyloid aggregates. Chem Commun (Camb) 2017; 53:2102-2105. [DOI: 10.1039/c6cc09085k] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Curcumin loaded lipoprotein based NPs with an ApoE3 shell and an AuNP core are synthesized for the detection and light-triggered disaggregation of Aβ oligomers.
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Affiliation(s)
- P. A. T. Martins
- Smart Hybrid Materials (SHMs) Laboratory
- Advanced Membranes and Porous Materials Center
- King Abdullah University of Science and Technology (KAUST)
- Thuwal 23955-6900
- Kingdom of Saudi Arabia
| | - S. Alsaiari
- Smart Hybrid Materials (SHMs) Laboratory
- Advanced Membranes and Porous Materials Center
- King Abdullah University of Science and Technology (KAUST)
- Thuwal 23955-6900
- Kingdom of Saudi Arabia
| | - K. Julfakyan
- Smart Hybrid Materials (SHMs) Laboratory
- Advanced Membranes and Porous Materials Center
- King Abdullah University of Science and Technology (KAUST)
- Thuwal 23955-6900
- Kingdom of Saudi Arabia
| | - Z. Nie
- Department of Chemistry and Biochemistry
- University of Maryland
- College Park
- USA
| | - N. M. Khashab
- Smart Hybrid Materials (SHMs) Laboratory
- Advanced Membranes and Porous Materials Center
- King Abdullah University of Science and Technology (KAUST)
- Thuwal 23955-6900
- Kingdom of Saudi Arabia
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20
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Wang D, Wan J, Nie Z, Zhang Q, Fei Z. Efficient Data Gathering Methods in Wireless Sensor Networks Using GBTR Matrix Completion. Sensors (Basel) 2016; 16:s16091532. [PMID: 27657085 PMCID: PMC5038805 DOI: 10.3390/s16091532] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/21/2016] [Revised: 09/08/2016] [Accepted: 09/13/2016] [Indexed: 11/16/2022]
Abstract
To obtain efficient data gathering methods for wireless sensor networks (WSNs), a novel graph based transform regularized (GBTR) matrix completion algorithm is proposed. The graph based transform sparsity of the sensed data is explored, which is also considered as a penalty term in the matrix completion problem. The proposed GBTR-ADMM algorithm utilizes the alternating direction method of multipliers (ADMM) in an iterative procedure to solve the constrained optimization problem. Since the performance of the ADMM method is sensitive to the number of constraints, the GBTR-A2DM2 algorithm obtained to accelerate the convergence of GBTR-ADMM. GBTR-A2DM2 benefits from merging two constraint conditions into one as well as using a restart rule. The theoretical analysis shows the proposed algorithms obtain satisfactory time complexity. Extensive simulation results verify that our proposed algorithms outperform the state of the art algorithms for data collection problems in WSNs in respect to recovery accuracy, convergence rate, and energy consumption.
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Affiliation(s)
- Donghao Wang
- School of Instrumentation Science and Opto-Electronics Engineering, Beihang University, Beijing 100191, China.
| | - Jiangwen Wan
- School of Instrumentation Science and Opto-Electronics Engineering, Beihang University, Beijing 100191, China.
| | - Zhipeng Nie
- School of Instrumentation Science and Opto-Electronics Engineering, Beihang University, Beijing 100191, China.
| | - Qiang Zhang
- School of Instrumentation Science and Opto-Electronics Engineering, Beihang University, Beijing 100191, China.
| | - Zhijie Fei
- School of Instrumentation Science and Opto-Electronics Engineering, Beihang University, Beijing 100191, China.
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Zhang Y, Shi Y, Yu H, Li J, Quan Y, Shu T, Nie Z, Zhang Y, Yu W. Functional characterization of Bombyx mori nucleopolyhedrovirus mutant lacking late expression factor 9. Acta Virol 2016; 60:281-9. [PMID: 27640438 DOI: 10.4149/av_2016_03_281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Baculoviridae is a family of invertebrate viruses with large double-stranded DNA genomes. Proteins encoded by some late expression factor (lef ) genes are involved in the regulation of viral gene expression. Lef-9 is one of four transcription-specific Lefs, which are components of the virus-encoded RNA polymerase, and can initiate and transcribe late and very late genes. As a multifunctional protein encoded by the Bombyx mori nucleopolyhedrovirus (BmNPV), Lef-9 may be involved in the regulation of viral propagation. However, the underlying mechanism remains unclear. To determine the role of lef-9 in baculovirus infection, lef-9-knockout virus (lef-9-KO-Bacmid virus) was constructed using the Red recombination system, and the Bac-to-Bac system was used to prepare lef-9-repaired virus (lef-9-Re-Bacmid virus). The lef-9-KO virus did not produce infectious viruses or show infection activity, while the lef-9-repaired virus recovered both. Quantitative real-time polymerase chain reaction (qRT-PCR) analysis of the transcription levels in wild-type-Bacmid, lef-9-KO-Bacmid, and lef-9-Re-Bacmid viruses showed that the lef-9-KO bacmid had little effect on viral genome replication. However, the transcription levels of the early and late viral genes, lef-3, ie-1, vp39, and p10, were significantly lower in BmN cells transfected with lef-9-KO-Bacmids than in the controls. Electron microscopy showed no visible enveloped virions in cells transfected with lef-9-KO-Bacmids, while many mature virions in cells transfected with lef-9-Re-Bacmid and wt-Bacmid were present. Thus, lef-9 was not essential for viral genome replication, but significantly affected viral gene transcription and expression in all periods of cell life cycle.
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Shi Y, Zhang C, Xie C, Quan Y, Nie Z, Chen J, Lv Z, Zhang Y, Yu W. The effect of BM67 gene deletion on Bombyx mori nuclear polyhedrosis virus replication. Acta Virol 2015; 59:40-8. [PMID: 25790050 DOI: 10.4149/av_2015_01_40] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Homologs of Bombyx mori nuclear polyhedrosis virus (BmNPV) Bm67 gene ORF67 have been found in the genome of all lepidopteran nuclear polyhedrosis viruses, but their function is still not very clear. In order to analyze it we employed a bacmid harboring the complete BmNPV genome including the Bm67 gene and expressing infectious virus (wtBacmid) for the construction of its Bm67-deficient variant (Bm67-KO-Bacmid) using the Red recombination system and the Bm67-repaired variant (Bm67-Re-Bacmid) using the Bac-to-Bac system. By transfecting BmN cells with these bacmids we demonstrated that the Bm67-deficient virus did not generate infectious virus, while the repaired virus restored its infectivity, indicating that the Bm67 gene is essential for the formation of infectious budding virus (BV). Electron microscopy of BmN cells transfected with the abovementioned bacmids showed many mature rodshaped virus particles in both wtBacmid- and Bm67-Re-Bacmid-transfected cells but none in Bm67-KO-Bacmid-transfected ones. Moreover, the real-time RT-PCR showed that the deletion of Bm67 from wtBacmid significantly reduced the levels of viral genomic DNA and transcripts of viral early genes dnapol, ie-1 and lef-3 but not those of transcripts of late gene vp39 and very late gene p10. The finding that the Bm67-deficient virus generated reduced levels of infectious virus and transcripts of early dnapol gene but not those of late genes indicates that the Bm67 gene is essential for BmNPV replication.
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Haylett A, Chiang Y, Nie Z, Ling T, Rhodes L. Sunscreen photopatch testing: a series of 157 children. Br J Dermatol 2014; 171:370-5. [DOI: 10.1111/bjd.13003] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/24/2014] [Indexed: 11/28/2022]
Affiliation(s)
- A.K. Haylett
- Photobiology Unit; Dermatology Centre; Institute of Inflammation and Repair; University of Manchester; Manchester Academic Health Science Centre; Salford Royal NHS Foundation Trust; Manchester M6 8HD U.K
| | - Y.Z. Chiang
- Photobiology Unit; Dermatology Centre; Institute of Inflammation and Repair; University of Manchester; Manchester Academic Health Science Centre; Salford Royal NHS Foundation Trust; Manchester M6 8HD U.K
| | - Z. Nie
- Photobiology Unit; Dermatology Centre; Institute of Inflammation and Repair; University of Manchester; Manchester Academic Health Science Centre; Salford Royal NHS Foundation Trust; Manchester M6 8HD U.K
| | - T.C. Ling
- Photobiology Unit; Dermatology Centre; Institute of Inflammation and Repair; University of Manchester; Manchester Academic Health Science Centre; Salford Royal NHS Foundation Trust; Manchester M6 8HD U.K
| | - L.E. Rhodes
- Photobiology Unit; Dermatology Centre; Institute of Inflammation and Repair; University of Manchester; Manchester Academic Health Science Centre; Salford Royal NHS Foundation Trust; Manchester M6 8HD U.K
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Xiao XC, Li KB, Chen ZQ, Di B, Yang ZC, Yuan J, Luo HB, Ye SL, Liu H, Lu JY, Nie Z, Tang XP, Wang M, Zheng BJ. Transmission of avian influenza A(H7N9) virus from father to child: a report of limited person-to-person transmission, Guangzhou, China, January 2014. ACTA ACUST UNITED AC 2014; 19. [PMID: 24993555 DOI: 10.2807/1560-7917.es2014.19.25.20837] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
We investigated a possible person-to-person transmission within a family cluster of two confirmed influenza A(H7N9) patients in Guangzhou, China. The index case, a man in his late twenties, worked in a wet market that was confirmed to be contaminated by the influenza A(H7N9) virus. He developed a consistent fever and severe pneumonia after 4 January 2014. In contrast, the second case, his five-year-old child, who only developed a mild disease 10 days after disease onset of the index case, did not have any contact with poultry and birds but had unprotected and very close contact with the index case. The sequences of the haemagglutinin (HA) genes of the virus stains isolated from the two cases were 100% identical. These findings strongly suggest that the second case might have acquired the infection via transmission of the virus from the sick father. Fortunately, all 40 close contacts, including the other four family members who also had unprotected and very close contact with the cases, did not acquire influenza A(H7N9) virus infection, indicating that the person-to-person transmissibility of the virus remained limited. Our finding underlines the importance of carefully, thoroughly and punctually following-up close contacts of influenza A(H7N9) cases to allow detection of any secondary cases, as these may constitute an early warning signal of the virus's increasing ability to transmit from person-to-person.
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Affiliation(s)
- X C Xiao
- Guangzhou Center for Disease Control and Prevention, Guangzhou, Guangdong, China
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Gao T, He B, Pan Y, Gu L, Chen L, Nie Z, Xu Y, Li R, Wang S. H19 DMR methylation correlates to the progression of esophageal squamous cell carcinoma through IGF2 imprinting pathway. Clin Transl Oncol 2013; 16:410-7. [PMID: 23943562 DOI: 10.1007/s12094-013-1098-x] [Citation(s) in RCA: 31] [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] [Received: 05/29/2013] [Accepted: 07/28/2013] [Indexed: 12/16/2022]
Abstract
BACKGROUND H19 gene has been proved to be essential for human tumor growth which contains CpG rich regions. Imprinted gene expression in many cancers is usually associated with the function of methylation. We performed this study to better understand wether H19 DMR methylation correlates to the progression of esophageal squamous cell carcinoma through IGF2 imprinting pathway. METHODS LOI of IGF2 was detected in 276 samples, which were determined as heterozygote with ApaI polymorphism in exon 9 of IGF2 by PCR-RFLP and RT-PCR-RFLP. Methylation status of H19 DMR in informative samples was analyzed by bisulfite sequencing PCR. IGF2 expression was examined by real-time PCR and IHC. RESULTS 208 ESCC patients were informative for ApaI polymorphism. 92 tumor and 30 normal tissues showed IGF2 LOI. Methylation status of H19 CBS6 was higher in patients with IGF2 LOI compared to patients with IGF2 MOI (p < 0.05). IGF2 expression in patients with IGF2 LOI was higher than patients with IGF2 MOI (p < 0.05) which was correlated with lymph node involvement, neoplastic grade and metastasis (p < 0.05). CONCLUSIONS Our results suggested that H19 CBS6 hypermethylation is related to the LOI of IGF2 which usually leads to an overexpression of IGF2, playing important roles in the occurrence, development as well as metastasis of ESCC. Therefore, H19 CBS6 methylation potentially represents a novel clinically relevant epigenetic marker to identify individuals at increased risk for the occurrence, progression and prognosis of ESCC.
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Affiliation(s)
- T Gao
- Central Laboratory, Nanjing First Hospital, Nanjing Medical University, 68 Changle Road, Nanjing, 210029, Jiangsu, China,
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Zhou XD, Templeton J, Nie Z, Chen H, Stevenson J, Pederson L. Electrochemical performance and stability of the cathode for solid oxide fuel cells: V. high performance and stable Pr2NiO4 as the cathode for solid oxide fuel cells. Electrochim Acta 2012. [DOI: 10.1016/j.electacta.2012.03.067] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Nie Z. Is photodynamic therapy a solution for keloid? GIORN ITAL DERMAT V 2011; 146:463-472. [PMID: 22095178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Keloid is a common skin condition, especially in people of Asian and African decent. The treatment of keloid is still unsatisfactory. Photodynamic therapy (PDT) is a novel treatment for this condition, but is widely used in treating certain skin pre-malignant and malignant lesions due to its high efficiency and safety. Another aspect of PDT is its scarless (or minimal scarring) wound healing after treatment despite the fact that it causes skin inflammation. There are a few independent reports that indicate 5-aminolevulinic acid (ALA) or methylaminolevulinate (MAL)-PDT may be effective in keloid and hypertrophic scars. The mechanism is largely unknown. PDT may exert these effects by acting on keratinocytes and fibroblasts or directly on collagen/extracellular matrix (ECM) in keloid tissues, by inducing keloid fibroblast apoptosis/necrosis, modulating growth factor and cytokine expression, reducing collagen/ECM synthesis and causing degeneration of formed collagen/ECM. These potential mechanisms and the scope for topical PDT of keloids are considered in this article.
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Affiliation(s)
- Z Nie
- University of Manchester, Manchester, UK.
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Fabbri GMT, Baldasseroni S, Panuccio D, Zoni Berisso M, Scherillo M, Lucci D, Di Pasquale G, Mathieu G, Burazor I, Burazor M, Perisic Z, Atanaskovic V, Erakovic V, Stojkovic A, Vogtmann T, Schoebel C, Sogorski S, Sebert M, Schaarschmidt J, Fietze I, Baumann G, Penzel T, Mornos C, Ionac A, Cozma D, Dragulescu D, Mornos A, Petrescu L, Pescariu L, Brembilla-Perrot B, Khachab H, Lamberti F, Bellini C, Remoli R, Cogliandro T, Nardo R, Bellusci F, Mazzuca V, Gaspardone A, Aguinaga Arrascue LE, Bravo A, Garcia Freire P, Gallardo P, Hasbani E, Quintana R, Dantur J, Inoue K, Ueoka A, Tsubakimoto Y, Sakatani T, Matsuo A, Fujita H, Kitamura M, Wegrzynowska M, Konduracka E, Pietrucha AZ, Mroczek-Czernecka D, Paradowski A, Bzukala I, Nessler J, Igawa O, Adachi M, Atarashi H, Kusama Y, Kodani E, Okazaki R, Nakagomi A, Endoh Y, Baez-Escudero JL, Dave AS, Sasaridis CM, Valderrabano M, Tilz R, Bai R, Di Biase L, Gallinghouse GJ, Gibson D, Pisapia A, Wazni O, Natale A, Arujuna A, Karim R, Rinaldi A, Cooklin M, Rhode K, Razavi R, O'neill M, Gill J, Kusa S, Komatsu Y, Kakita K, Takayama K, Taniguchi H, Otomo K, Iesaka Y, Ammar S, Reents T, Fichtner S, Wu J, Zhu P, Olimulder MAGM, Galjee MA, Van Dessel PFHM, Van Der Palen J, Wilde AAM, Scholten MF, Chouchou F, Poupard L, Philippe C, Court-Fortune I, Kolb C, Barthelemy JC, Roche F, Deshko MS, Snezhitsky VA, Dolgoshey TS, Madekina GA, Stempen TP, Sugiura S, Fujii E, Senga M, Hessling G, Dohi K, Sugiura E, Nakamura M, Ito M, Eitel C, Hindricks G, Sommer P, Gaspar T, Bollmann A, Arya A, Deisenhofer I, Piorkowski C, Mendell J, Lasseter K, Shi M, Urban L, Hatala R, Hlivak P, De Melis M, Garutti C, Corbucci G, Di Biase L, Mlcochova H, Maxian R, Cihak R, Wichterle D, Peichl P, Kautzner J, Arbelo E, Dogac A, Luepkes C, Ploessnig M, Gilbert G, Chronaki C, Hinterbuchner L, Guillen A, Brugada J, Bun SS, Latcu DG, Franceschi F, Prevot S, Koutbi L, Ricard P, Mohanty P, Saoudi N, Deharo JC, Nazari N, Alizadeh A, Sayah S, Hekmat M, Assadian M, Ahmadzadeh A, Pietrucha AZ, Bzukala I, Cunningham J, Wnuk M, Mroczek-Czernecka D, Jedrzejczyk-Spaho J, Kruszelnicka O, Piwowarska W, Nessler J, Fedorowski A, Burri P, Juul-Moller S, Melander O, Metz T, Mitro P, Murin P, Kirsch P, Habalova V, Slaba E, Matyasova E, Barlow MA, Blake RJ, Wnuk M, Pietrucha AZ, Horton R, Rostoff P, Wojewodka Zak E, Mroczek-Czernecka D, Wegrzynowska M, Piwowarska W, Nessler J, Froidevaux L, Sarasin FP, Louis-Simonet M, Hugli O, Gallinghouse GJ, Yersin B, Schlaepfer J, Mischler C, Pruvot E, Occhetta E, Frascarelli F, Piacenti M, Burali A, Dovellini E, Padeletti L, Natale A, Tao S, Yamauchi Y, Okada H, Maeda S, Obayashi T, Isobe M, Chan J, Johar S, Wong T, Markides V, Hussain W, Konstantinidou M, Wissner E, Tilz R, Fuernkranz A, Yoshiga Y, Metzner A, Kuck KH, Ouyang F, Kettering K, Gramley F, Mollnau H, Weiss C, Bardeleben S, Biasco L, Scaglione M, Caponi D, Di Donna P, Sergi D, Cerrato N, Blandino A, Gaita F, Kettering K, Mollnau H, Weiss C, Gramley F, Fiala M, Wichterle D, Sknouril L, Bulkova V, Chovancik J, Nevralova R, Pindor J, Januska J, Choi JI, Ban JE, Yasutsugu N, Park JS, Jung JS, Lim HE, Park SW, Kim YH, Kuhne M, Reichlin T, Ammann P, Schaer B, Osswald S, Sticherling C, Ohe M, Goya M, Hiroshima K, Hayashi K, Makihara Y, Nagashima M, Fukunaga M, An Y, Dorwarth U, Schmidt M, Wankerl M, Krieg J, Straube F, Hoffmann E, Deisenhofer I, Ammar S, Reents T, Fichtner S, Kathan S, Wu J, Kolb C, Hessling G, Kuhne M, Reichlin T, Ammann P, Schaer B, Osswald S, Sticherling C, Defaye P, Mbaye A, Cassagneau R, Gagniere V, Jacon P, Pokushalov E, Romanov A, Artemenko S, Shabanov V, Elesin D, Stenin I, Turov A, Losik D, Kondo K, Adachi M, Miake J, Yano A, Ogura K, Kato M, Shigemasa C, Sekiguchi Y, Tada H, Yoshida K, Naruse Y, Yamasaki H, Igarashi M, Machino T, Aonuma K, Chen S, Liu S, Chen G, Meng W, Zhang F, Yan Y, Sciarra L, Dottori S, Lanzillo C, De Ruvo E, De Luca L, Minati M, Lioy E, Calo' L, Lin J, Nie Z, Zhu M, Wang X, Zhao J, Hu W, Tao H, Ge J, Johansson B, Houltz B, Edvardsson N, Schersten H, Karlsson T, Wandt B, Berglin E, Hoyt RH, Jenson BP, Trines SAIP, Braun J, Tjon Joek Tjien A, Zeppenfeld K, Tavilla G, Klautz RJM, Schalij MJ, Krausova R, Cihak R, Peichl P, Wichterle D, Kautzner J, Pirk J, Skalsky I, Maly J, Imai K, Sueda T, Orihashi K, Picarra BC, Santos AR, Dionisio P, Semedo P, Matos R, Leitao M, Banha M, Trinca M, Elder DHJ, George J, Jain R, Lang CC, Choy AM, Konert M, Loescher S, Hartmann A, Aversa E, Chirife R, Sztyglic E, Mazzetti H, Mascheroni O, Tentori MC, Pop RM, Margulescu AD, Dulgheru R, Enescu O, Siliste C, Vinereanu D, Menezes Junior A, Castro Carneiro AR, De Oliveira BL, Shah AN, Kantharia B, De Lucia R, Soldati E, Segreti L, Di Cori A, Zucchelli G, Viani S, Paperini L, Bongiorni MG, Kutarski A, Czajkowski M, Pietura R, Malecka B, Heintze J, Eckardt L, Bauer A, Meine M, Van Erven L, Bloch Thomsen PE, Lopez Chicharro MP, Merhi O, Nagashima M, Goya M, Soga Y, Hayashi K, Ohe M, Andou K, Hiroshima K, Nobuyoshi M, Gonzalez-Mansilla A, Martin-Asenjo R, Unzue L, Torres J, Garralda E, Coma RR, Rodriguez Garcia JE, Yaegashi T, Furusho H, Kato T, Chikata A, Takashima S, Usui S, Takamura M, Kaneko S, Kutarski A, Pietura R, Czajkowski M, Chudzik M, Kutarski A, Mitkowski P, Przybylski A, Lewek J, Malecka B, Smukowski T, Maciag A, Castrejon Castrejon S, Perez-Silva A, Estrada A, Doiny D, Ortega M, Lopez-Sendon JL, Merino JL, O'mahony C, Coats C, Cardona M, Garcia A, Calcagnino M, Lachmann R, Hughes D, Elliott PM, Conti S, Pruiti GP, Puzzangara E, Romano SA, Di Grazia A, Ussia GP, Tamburino C, Calvi V, Radinovic A, Sala S, Latib A, Mussardo M, Sora S, Paglino G, Gullace M, Colombo A, Ohlow MAG, Lauer B, Wagner A, Schreiber M, Buchter B, Farah A, Fuhrmann JT, Geller JC, Nascimento Cardoso RM, Batista Sa LA, Campos Filho LFC, Rodrigues SV, Dutra MVF, Borges TRSA, Portilho DR, Deering T, Bernardes A, Veiga A, Gartenlaub O, Goncalves A, Jimenez A, Rousseauplasse A, Deharo JC, Striekwold H, Gosselin G, Sitbon H, Martins V, Molon G, Ayala-Paredes F, Rousseauplasse A, Sancho-Tello MJ, Fazal IA, Brady S, Cronin J, Mcnally S, Tynan M, Plummer CJ, Mccomb JM, Val-Mejias JE, Fazal IA, Tynan M, Plummer CJ, Mccomb JM, Oliveira RM, Costa R, Martinelli Filho M, Silva KR, Menezes LM, Tamaki WT, Mathias W, Stolf NAG, Misawa T, Ohta I, Shishido T, Miyasita T, Miyamoto T, Nitobe J, Watanabe T, Kubota I, Thibault B, Ducharme A, Simpson C, Stuglin C, Gagne CE, Gagne CE, Williams R, Mcnicoll S, Silvetti MS, Drago F, Penela D, Bijnens B, Doltra A, Silva E, Berruezo A, Mont L, Sitges M, Mcintosh R, Baumann O, Raju P, Gurunathan S, Furniss S, Patel N, Sulke N, Lloyd G, Mor M, Dror S, Tsadok Y, Bachner-Hinenzon N, Katz A, Liel-Cohen N, Etzion Y, Mlynarski R, Mlynarska A, Wilczek J, Sosnowski M, Sinha AM, Sinha D, Noelker G, Brachmann J, Weidemann F, Ertl G, Jones M, Searle N, Cocker M, Ilsley E, Foley P, Khiani R, Nelson KE, Turley AJ, Owens WA, James SA, Linker NJ, Velagic V, Cikes M, Pezo Nikolic B, Puljevic D, Separovic-Hanzevacki J, Lovric-Bencic M, Biocina B, Milicic D, Kawata H, Chen L, Phan H, Anand K, Feld G, Birgesdotter-Green U, Fernandez Lozano I, Mitroi C, Toquero Ramos J, Castro Urda V, Monivas Palomero V, Corona Figueroa A, Hernandez Reina L, Alonso Pulpon L, Gate-Martinet A, Da Costa A, Rouffiange P, Cerisier A, Bisch L, Romeyer-Bouchard C, Isaaz K, Morales MA, Bianchini E, Startari U, Faita F, Bombardini T, Gemignani V, Piacenti M, Adhya S, Kamdar RH, Millar LM, Burchardt C, Murgatroyd FD, Klug D, Kouakam C, Guedon-Moreau L, Marquie C, Benard S, Kacet S, Cortez-Dias N, Carrilho-Ferreira P, Silva D, Goncalves S, Valente M, Marques P, Carpinteiro L, Sousa J, Keida T, Nishikido T, Fujita M, Chinen T, Kikuchi T, Nakamura K, Ohira H, Takami M, Anjo D, Meireles A, Gomes C, Roque C, Pinheiro Vieira A, Lagarto V, Reis H, Torres S, Ortega DF, Barja LD, Montes JP, Logarzo E, Bonomini P, Mangani N, Paladino C, Chwyczko T, Smolis-Bak E, Sterlinski M, Maciag A, Pytkowski M, Firek B, Jankowska A, Szwed H, Nakajima I, Noda T, Okamura H, Satomi K, Aiba T, Shimizu W, Aihara N, Kamakura S, Brzozowski W, Tomaszewski A, Kutarski A, Wysokinski A, Bertoldi EG, Rohde LE, Zimerman LI, Pimentel M, Polanczyk CA, Boriani G, Lunati M, Gasparini M, Landolina M, Lonardi G, Pecora D, Santini M, Valsecchi S, Rubinstein BJ, Wang DY, Cabreriza SE, Richmond ME, Rusanov A, Quinn TA, Cheng B, Spotnitz HM, Kristiansen HM, Vollan G, Hovstad T, Keilegavlen H, Faerestrand S, Kawata H, Phan H, Anand K, Feld G, Brigesdotter-Green U, Nawar AMR, Ragab DALIA, Eluhsseiny RANIA, Abdelaziz AHMED, Nof E, Abu Shama R, Buber J, Kuperstein R, Feinberg MS, Barlev D, Eldar M, Glikson M, Badran H, Samir R, Tawfik M, Amin M, Eldamnhoury H, Khaled S, Tolosana JM, Martin AM, Hernandez-Madrid A, Macias A, Fernandez-Lozano I, Osca J, Quesada A, Mont L, Boriani G, Gasparini M, Landolina M, Lunati M, Santini M, Padeletti L, Botto GL, De Santo T, Lunati M, Szwed A, Martinez JG, Degand B, Villani GQ, Leclercq C, Rousseauplasse A, Ritter P, Estrada A, Doiny D, Castrejon Castrejon S, Perez-Silva A, Ortega M, Lopez-Sendon JL, Merino JL, Watanabe I, Nagashima K, Okumura Y, Kofune M, Ohkubo K, Nakai T, Hirayama A, Mikhaylov E, Vander M, Lebedev D, Zarse M, Suleimann H, Bogossian H, Stegelmeyer J, Ninios I, Karosienne Z, Kloppe A, Lemke B, John S, Gaspar T, Rolf S, Sommer P, Hindricks G, Piorkowski C, Berruezo A, Fernandez-Armenta J, Mont LL, Zeljko H, Andreu D, Herzcku C, Boussy T, Brugada J, Yamauchi Y, Okada H, Maeda S, Tao S, Obayahi T, Aonuma K, Hegrenes J, Lim E, Mediratta V, Bautista R, Teplitsky L, Van Huls Van Taxis CFB, Wijnmaalen AP, Gawrysiak M, Schuijf JD, Bax JJ, Schalij MJ, Zeppenfeld K, Huo Y, Richter S, Hindricks G, Arya A, Gaspar T, Bollmann A, Akca F, Bauernfeind T, Schwagten B, De Groot NMS, Jordaens L, Szili-Torok T, Hegrenes J, Miller S, Kastner G, Teplitsky L, Maury P, Della Bella P, Delacretaz E, Sacher F, Maccabelli G, Brenner R, Rollin A, Jais P, Vergara P, Trevisi N, Ricco A, Petracca F, Bisceglia C, Baratto F, Maccabelli G, Della Bella P, Salguero Bodes R, Fontenla Cerezuela A, De Riva Silva M, Lopez Gil M, Mejia Martinez E, Jurado Roman A, Montero Alvarez M, Arribas Ynsaurriaga F, Baszko A, Krzyzanowski K, Bobkowski W, Surmacz R, Zinka E, Siwinska A, Szyszka A, Perez Silva A, Doiny D, Castrejon Castrejon S, Estrada Mucci A, Ortega Molina M, Lopez Sendon JL, Merino Llorens JL, Kaitani K, Hanazawa K, Izumi C, Nakagawa Y, Yamanaka I, Hirahara T, Sugawara Y, Suga C, Ako J, Momomura S, Galizio N, Gonzalez J, Robles F, Palazzo A, Favaloro L, Diez M, Guevara E, Fernandez A, Greenberg S, Epstein A, Deering T, Goldman DS, Sangli C, Keeney JA, Lee K, Piers SRD, Van Rees JB, Thijssen J, Borleffs CJW, Van Der Velde ET, Van Erven L, Schalij MJ, Leclercq CH, Hero M, Mizobuchi M, Enjoji Y, Yazaki Y, Shibata K, Funatsu A, Kobayashi T, Nakamura S, Amit G, Pertzov B, Katz A, Zahger D, Robles F, Galizio N, Gonzalez J, Medesani L, Rana R, Palazzo A, Albano F, Fraguas H, Pedersen SS, Hoogwegt MT, Jordaens L, Theuns DAMJ, Van Den Broek KC, Tekle FB, Habibovic M, Alings M, Van Der Voort P, Denollet J, Vrazic H, Jilek C, Badran H, Lesevic H, Tzeis S, Semmler V, Deisenhofer I, Kolb C, Theuns DAMJ, Gold MR, Burke MC, Bardy GH, Varma N, Pavri B, Stambler B, Michalski J, Investigators TRUST, Safak E, Schmitz D, Konorza T, Wende C, Schirdewan A, Neuzner J, Simmers T, Erglis A, Gradaus R, Alings M, Goetzke J, Coutrot L, Goehl K, Bazan Gelizo V, Grau N, Valles E, Felez M, Sanjuas C, Bruguera J, Marti-Almor J, Chu SY, Li PW, Ding WH, Schukro C, Leitner L, Siebermair J, Stix G, Pezawas T, Kastner J, Wolzt M, Schmidinger H, Behar NATHALIE, Kervio G, Petit B, Maison-Balnche P, Bodi S, Mabo P, Foley PWX, Mutch E, Brashaw-Smith J, Ball L, Leyva F, Kim DH, Lee MJ, Lee WS, Park SD, Shin SH, Woo SI, Kwan J, Park KS, Munetsugu Y, Tanno K, Kikuchi M, Ito H, Miyoshi F, Kawamura M, Kobayashi Y, Man S, Algra AM, Schreurs CA, Van Erven L, Van Der Wall EE, Cannegieter SC, Schalij MJ, Swenne CA, Adachi M, Yano A, Miake J, Ogura K, Kato M, Iitsuka K, Kondo T, Zarse M, Goebbert K, Bogossian H, Karossiene Z, Stegelmeyer J, Ninios I, Kloppe A, Lemke B, Goldman D, Kallen B, Kerpi E, Sardo J, Arsenos P, Gatzoulis K, Manis G, Dilaveris P, Tsiachris D, Mytas D, Asimakopoulos S, Stefanadis C, Arsenos P, Gatzoulis K, Manis G, Dilaveris P, Sideris S, Kartsagoulis E, Mytas D, Stefanadis C, Barbosa O, Marocolo Junior M, Silva Cortes R, Moraes Brandolis RA, Oliveira LF, Pertili Rodrigues De Resende LA, Vieira Da Silva MA, Dias Da Silva VJ, Hegazy RA, Sharaf IA, Fadel F, Bazaraa H, Esam R, Deshko MS, Snezhitsky VA, Stempen TP, Kuroki K, Tada H, Igawa M, Yoshida K, Igarashi M, Sekiguchi Y, Kuga K, Aonuma K, Ferreira Santos L, Dionisio T, Nunes L, Machado J, Castedo S, Henriques C, Matos A, Oliveira Santos J, Kraaier K. Poster Session 3. Europace 2011. [DOI: 10.1093/europace/eur229] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Haylett A, Nie Z, Brownrigg M, Taylor R, Rhodes L. Systemic photoprotection in solar urticaria with α-melanocyte-stimulating hormone analogue [Nle4-d-Phe7]-α-MSH. Br J Dermatol 2011; 164:407-14. [DOI: 10.1111/j.1365-2133.2010.10104.x] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Abstract
While ultraviolet radiation (UVR) is a major cause of skin ageing and carcinogenesis, public pursuit of a novel tanning strategy circumventing the need for UVR is increasingly reported in the media and scientific press. This involves the subcutaneous self-administration of unregulated products labelled as melanotan I and/or II, synthetic analogues of α-melanocyte stimulating hormone (α-MSH), as obtained via the internet, tanning salons and gyms. The Medicines and Healthcare products Regulatory Authority has recently raised awareness of the public health risk of transmission of blood-borne viruses from the needle sharing that may occur, and of the potential impurity of these products. Dermatologists should also be aware that these agents can complicate the clinical presentation of patients with pigmented lesions; their use may be suspected in unexpectedly tanned individuals with rapidly pigmenting naevi. Meanwhile, the regulated α-MSH analogue afamelanotide (Clinuvel Pharmaceuticals Ltd, Melbourne, Australia) is showing promise for its photoprotective potential, and is undergoing phase II and III clinical trials in people with photosensitivity disorders and those prone to nonmelanoma skin cancer. The photoprotective and other biological effects of α-MSH analogues await full determination.
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Affiliation(s)
- E A Langan
- Photobiology Unit, Dermatological Sciences, Epithelial Sciences Research Group, University of Manchester, Manchester Academic Health Science Centre, Salford Royal NHS Foundation Trust, Manchester, U.K.
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Tremblay GF, Nie Z, Bélanger G, Pelletier S, Allard G. Predicting timothy mineral concentrations, dietary cation-anion difference, and grass tetany index by near-infrared reflectance spectroscopy. J Dairy Sci 2009; 92:4499-506. [PMID: 19700711 DOI: 10.3168/jds.2008-1973] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The mineral concentration of forage grasses plays a significant role in 2 metabolic disorders in dairy cattle production, namely, hypocalcemia (milk fever) and hypomagnesemia (grass tetany). Risks of occurrence of these 2 metabolic disorders can be evaluated by determining the dietary cation-anion difference (DCAD) and the grass tetany (GT) index of forages and specific rations. The objective of this study was to evaluate the feasibility of predicting timothy (Phleum pratense L.) mineral concentrations of Na, K, Ca, Mg, Cl, S, and P, the DCAD, and the GT index by near-infrared reflectance spectroscopy (NIRS). Timothy samples (n = 1,108) were scanned using NIRS and analyzed for the concentration of 7 mineral elements. Calculations of the DCAD were made using 3 different formulas, and the GT index was also calculated. Samples were divided into calibration (n = 240) and validation (n = 868) sets. The calibration, cross-validation, and prediction for mineral concentrations, the DCAD, and the GT index were performed using modified partial least squares regression. Concentrations of K, Ca, Mg, Cl, and P were successfully predicted with coefficients of determination of prediction (R(P)2) of 0.69 to 0.92 and coefficients of variation of prediction (CV(P)) ranging from 6.6 to 11.4%. The prediction of Na and S concentrations failed, with respective R(P)2 of 0.58 and 0.53 and CV(P) of 82.2 and 12.9%. The 3 calculated DCAD and the GT index were predicted successfully, with R(P)2 >0.90 and CV(P) <20%. Our results confirm the feasibility of using NIRS to predict K, Ca, Mg, and Cl concentrations, as well as the DCAD and the GT index, in timothy.
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Affiliation(s)
- G F Tremblay
- Agriculture and Agri-Food Canada, Soils and Crops Research and Development Centre, Québec, Québec, Canada.
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Nie Z, Tremblay GF, Bélanger G, Berthiaume R, Castonguay Y, Bertrand A, Michaud R, Allard G, Han J. Carbohydrates in alfalfa-timothy mixtures predicted with near infrared reflectance spectroscopy equations developed for single species. Can J Anim Sci 2009. [DOI: 10.4141/cjas08128] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Our objective was to evaluate the feasibility of using near infrared reflectance spectroscopy (NIRS) equations previously developed with a calibration set that included samples of both timothy and alfalfa to predict carbohydrate fractions in mixed samples of both species. Timothy and alfalfa mixed samples were prepared with the alfalfa proportion ranging from 0 to 100%, with increments of 4%. With previously developed NIRS equations based on samples of single species of timothy and alfalfa, concentrations of total ethanol soluble carbohydrates (TESC), starch, and neutral detergent soluble carbohydrates (NDSC) of the mixed samples were predicted successfully, but concentrations of organic acids (OA) and neutral detergent soluble fiber (NDSF) were unsuccessfully predicted. Adding 13 mixed samples to the initial calibration set of around 110 samples of pure timothy and alfalfa samples improved the accuracy of already successful predictions for TESC, starch, and NDSC, and resulted in a successful prediction for NDSF in timothy and alfalfa mixtures.Key words: Near infrared reflectance spectroscopy, sugars, Phleum pratense, Medicago sativa
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Nie Z, Tremblay G, Bélanger G, Berthiaume R, Castonguay Y, Bertrand A, Michaud R, Allard G, Han J. Near-infrared reflectance spectroscopy prediction of neutral detergent-soluble carbohydrates in timothy and alfalfa. J Dairy Sci 2009; 92:1702-11. [DOI: 10.3168/jds.2008-1599] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Lipton SA, Li H, Zaremba JD, McKercher SR, Cui J, Kang YJ, Nie Z, Soussou W, Talantova M, Okamoto SI, Nakanishi N. Autistic Phenotype from MEF2C Knockout Cells. Science 2009; 323:208. [DOI: 10.1126/science.323.5911.208b] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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Nie Z, Han J, Liu T, Liu X. Hot topic: application of support vector machine method in prediction of alfalfa protein fractions by near infrared reflectance spectroscopy. J Dairy Sci 2008; 91:2361-9. [PMID: 18487658 DOI: 10.3168/jds.2008-0985] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The object of this study was to explore the potential for support vector machine (SVM) to improve the precision of predicting protein fractions by near infrared reflectance spectroscopy (NIRS). Generally, most protein fractions determined in Cornell Net Carbohydrate and Protein System (CNCPS), especially the neutral detergent insoluble protein (NDFCP) and acid detergent insoluble protein (ADFCP), could not be accurately predicted by the commonly used partial least squares (PLS) method. A recently developed chemometric method, SVM, was applied in NIRS prediction of alfalfa protein fractions in this study. Two hundred thirty alfalfa samples were scanned on a near infrared reflectance spectrophotometer, and analyzed for crude protein (CP), true protein precipitated in tungstic acid (TCP), borate-phosphate buffer-insoluble protein (BICP), NDFCP, and ADFCP. These 5 laboratory proteins and the CNCPS protein fractions A, B1, B2, B3, and C were predicted by NIRS using the PLS and SVM methods. According to PLS-NIRS regression, CP, TCP, BICP, A, and B2 obtained the determination coefficient of prediction (R(p)(2)) of 0.96, 0.91, 0.94, 0.94, and 0.93, and the ratios of standard deviation of prediction samples: standard error of prediction samples (RPD) values were 5.07, 3.31, 3.98, 3.96, and 3.91. Neutral detergent insoluble protein, ADFCP (fraction C), B1, and B3 were predicted with R(p)(2) of 0.75, 0.83, 0.30, and 0.62, and RPD values of 1.98, 2.42, 1.20, and 1.62; Calibrated by the SVM-NIRS method, R(p)(2) values of CP, TCP, BICP, NDFCP, ADFCP(C), A, and B2 achieved 0.99, 0.97, 0.97, 0.90, 0.93, 0.97, and 0.97, respectively. The RPD values of those fractions were 8.68, 8.26, 6.11, 3.08, 3.69, 5.97, and 5.81, respectively. The R(p)(2) and RPD values of fractions B1 and B3 were 2.67 and 0.87 (B1) and 2.51 and 0.75 (B3) directly predicted by SVM-NIRS model. In this study, the chemical analysis results of B1 and B3 were also correlated with calculated results from TCP-BICP and NDFCP-ADFCP, which were predicted by SVM-NIRS models. The B1 protein fraction achieved R(p)(2) and RPD values of 0.87 and 3.61, whereas values for B2 were 0.75 and 2.00. Data suggested that use of SVM methods in NIRS technology could improve the accuracy of predicting protein fractions. This study showed the potential of increasing the NIRS prediction accuracy to a level of practical use for all protein fractions, except B3.
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Affiliation(s)
- Z Nie
- Department of Grassland Science, College of Animal Science and Technology, China Agricultural University, Beijing 10094, China
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Wen J, Duan Y, Zou Y, Nie Z, Feng H, Lugnani F, Baust JG. Cryoablation induces necrosis and apoptosis in lung adenocarcinoma in mice. Technol Cancer Res Treat 2008; 6:635-40. [PMID: 17994794 DOI: 10.1177/153303460700600607] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
This study evaluated cryoablation on subcutaneously transplanted tumors of lung adenocarcinoma LA795 in T739 mice in vivo, in an effort to assess the feasibility of cryoablation in treatment of NSCLC. Subcutaneously transplanted lung adenocarcinoma LA795 was implanted into T739 mice yielding tumors of approximately 2.5 cm in diameter. Following cryoablation, the various modes of cell death were studied: necrosis in the central frozen zone by light microscopy and apoptosis in periphery of the frozen zone by in situ end labeling (TUNEL). Bc1-2 and bax expression were detected by immunohistochemical SABC procedures, and the cleavage and activation of Caspase 3 and PARP in peripheral zone by Western blot. We find that in central cryoablated zone, necrosis was the dominant mode of cell death occurring at three hours and four days post-thaw. The first three-hour necrosis peak involved approximately 47% of the tumor while the four-day peak increased in volume to 68% of the tumor. In peripheral cryoablation zone, definite cell apoptosis could be observed by morphological examination under light microscope and TUNEL staining, peaking at 8-16 h after cryoablation. Immunohistochemical results yielded little change in bcl-2 protein expression before and after cryoablation. However, bax protein expression was up-regulated significantly after cryoablation. In addition, cleavage and activation of Caspase-3 and PARP occurred in the peripheral freeze zone after the treatment. It indicated that Cryoablation efficiently induces cell death both by necrosis and apoptosis. Cryoablation appears to induce apoptosis in the peripheral freeze zone through the intrinsic mitochondrial caspase pathway based on bax upregulation. This observation allows us to suggest that cryoablation may be combined with chemotherapy to increase cancer destruction.
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Affiliation(s)
- J Wen
- Department of Oncology, Navy General Hospital, Beijing 100037, China.
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Berlis A, Nie Z, Spreer J, Cyron D, Schumacher M. Single Secondarily Generalized Epileptic Seizure and Unspecific Diffuse Leucencephalopathy: Tumour, Vessel Disease, Demyelinating Process? Akt Neurol 2004. [DOI: 10.1055/s-2003-814851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Nie Z, Phenix BN, Lum JJ, Alam A, Lynch DH, Beckett B, Krammer PH, Sekaly RP, Badley AD. HIV-1 protease processes procaspase 8 to cause mitochondrial release of cytochrome c, caspase cleavage and nuclear fragmentation. Cell Death Differ 2002; 9:1172-84. [PMID: 12404116 DOI: 10.1038/sj.cdd.4401094] [Citation(s) in RCA: 93] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2002] [Revised: 06/17/2002] [Accepted: 06/17/2002] [Indexed: 11/09/2022] Open
Abstract
Infection of T cells with HIV-1 induces apoptosis and modulates apoptosis regulatory molecules. Similar effects occur following treatment of cells with individual HIV-1 encoded proteins. While HIV-1 protease is known to be cytotoxic, little is known of its effect on apoptosis and apoptosis regulatory molecules. The ability of HIV-1 protease to kill cells, coupled with the degenerate substrate specificity of HIV-1 protease, suggests that HIV-1 protease may activate cellular factor(s) which, in turn, induce apoptosis. We demonstrate that HIV-1 protease directly cleaves and activates procaspase 8 in T cells which is associated with cleavage of BID, mitochondrial release of cytochrome c, activation of the downstream caspases 9 and 3, cleavage of DFF and PARP and, eventually, to nuclear condensation and DNA fragmentation that are characteristic of apoptosis. The effect of HIV-1 protease is not seen in T cell extracts which have undetectable levels of procaspase 8, indicating a specificity and requirement for procaspase 8.
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Affiliation(s)
- Z Nie
- Department of Biochemistry, Microbiology and Immunology, University of Ottawa, Ottawa, Ontario, Canada
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Phenix BN, Lum JJ, Nie Z, Sanchez-Dardon J, Badley AD. Antiapoptotic mechanism of HIV protease inhibitors: preventing mitochondrial transmembrane potential loss. Blood 2001; 98:1078-85. [PMID: 11493454 DOI: 10.1182/blood.v98.4.1078] [Citation(s) in RCA: 86] [Impact Index Per Article: 3.7] [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: 11/20/2022] Open
Abstract
Treatment of cells with the HIV drugs ritonavir, saquinavir, or nelfinavir (Nfv) inhibits apoptosis induced by a variety of stimuli. Because these drugs are protease inhibitors, they have been postulated to inhibit apoptosis by blocking caspase activity. This study shows that Nfv has no effect on caspase activity or on the transcription or synthesis of a variety of apoptosis regulatory molecules. Instead, Nfv inhibits mitochondrial transmembrane potential loss (Delta psi(m)) and the subsequent release of apoptotic mediators. Consequently, the antiapoptotic effects of Nfv are restricted to apoptotic pathways that involve Delta psi(m). (Blood. 2001;98:1078-1085)
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Affiliation(s)
- B N Phenix
- Ottawa Hospital Research Institute, University of Ottawa, ON, Canada
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Abstract
Adenosine, a metabolite of ATP, serves a number of important physiological roles in the body. These actions contribute to sedation, bradycardia, vasorelaxation, inhibition of lipolysis and regulation of the immune system and are mediated, in part, through activation of three distinct adenosine receptor (AR) subtypes. To date, four receptor types have been cloned: A1, A2A, A2B and A3. It is becoming increasing clear that adenosine contributes significantly to cytoprotection, a function mediated principally by the A1AR and A3AR. In this review, we survey the literature on the role of adenosine and the mechanisms underlying cytoprotection and ischemic preconditioning, a process characterized by cytoprotection derived from repeated brief ischemic challenges. An important recent observation is that the expression of several AR subtypes could be regulated by oxidative stress to provide a greater cytoprotective role. Thus, like other proteins known to be regulated during ischemia, the A1AR and A3AR can be considered as being inducible receptors.
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Affiliation(s)
- V Ramkumar
- Southern Illinois University School of Medicine, Department of Pharmacology, Springfield 62794-9620, USA.
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Kalman TI, Nie Z, Kamat A. 5-propynylpyrimidine nucleoside derivatives: rationally designed mechanism-based inactivators of thymidylate synthase. Nucleosides Nucleotides Nucleic Acids 2001; 20:869-71. [PMID: 11563134 DOI: 10.1081/ncn-100002448] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
A novel series of 5-propynyl-dUMP derivatives, with a variety of leaving groups on the side-chain, was designed as potential mechanism-based inhibitors of thymidylate synthase (TS), and synthesized from 5-iodo-2'-deoxyuridine by Pd(0)-catalyzed coupling, followed by direct phosphorylation with POCl3. All members of the series inhibited TS competitively with Ki-values of 0.015-18 microM. Analogs with fluorine or imidazole-based leaving groups caused rapid, irreversible inactivation of TS.
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Affiliation(s)
- T I Kalman
- Department of Chemistry, University at Buffalo, State University of New York, 457 Cooke Hall, Buffalo, New York 14260, USA
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Randazzo PA, Miura K, Nie Z, Orr A, Theibert AB, Kearns BG. Cytohesins and centaurins: mediators of PI 3-kinase regulated Arf signaling. Trends Biochem Sci 2001; 26:220-1. [PMID: 11295547 DOI: 10.1016/s0968-0004(01)01806-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Egan CA, Reddy D, Nie Z, Taylor TB, Schmidt LA, Meyer LJ, Petersen MJ, Hashimoto T, Marinkovich MP, Zone JJ. IgG anti-LABD97 antibodies in bullous pemphigoid patients' sera react with the mid-portion of the BPAg2 ectodomain. J Invest Dermatol 2001; 116:348-50. [PMID: 11180014 DOI: 10.1046/j.1523-1747.2001.01246.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Nie Z, Nagata Y, Joubeh S, Hirako Y, Owaribe K, Kitajima Y, Hashimoto T. IgA antibodies of linear IgA bullous dermatosis recognize the 15th collagenous domain of BP180. J Invest Dermatol 2000; 115:1164-6. [PMID: 11121162 DOI: 10.1046/j.1523-1747.2000.0202a-7.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Nie Z, Xue Y, Yang D, Zhou S, Deroo BJ, Archer TK, Wang W. A specificity and targeting subunit of a human SWI/SNF family-related chromatin-remodeling complex. Mol Cell Biol 2000; 20:8879-88. [PMID: 11073988 PMCID: PMC86543 DOI: 10.1128/mcb.20.23.8879-8888.2000] [Citation(s) in RCA: 245] [Impact Index Per Article: 10.2] [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: 11/20/2022] Open
Abstract
The SWI/SNF family of chromatin-remodeling complexes facilitates gene activation by assisting transcription machinery to gain access to targets in chromatin. This family includes BAF (also called hSWI/SNF-A) and PBAF (hSWI/SNF-B) from humans and SWI/SNF and Rsc from Saccharomyces cerevisiae. However, the relationship between the human and yeast complexes is unclear because all human subunits published to date are similar to those of both yeast SWI/SNF and Rsc. Also, the two human complexes have many identical subunits, making it difficult to distinguish their structures or functions. Here we describe the cloning and characterization of BAF250, a subunit present in human BAF but not PBAF. BAF250 contains structural motifs conserved in yeast SWI1 but not in any Rsc components, suggesting that BAF is related to SWI/SNF. BAF250 is also a homolog of the Drosophila melanogaster Osa protein, which has been shown to interact with a SWI/SNF-like complex in flies. BAF250 possesses at least two conserved domains that could be important for its function. First, it has an AT-rich DNA interaction-type DNA-binding domain, which can specifically bind a DNA sequence known to be recognized by a SWI/SNF family-related complex at the beta-globin locus. Second, BAF250 stimulates glucocorticoid receptor-dependent transcriptional activation, and the stimulation is sharply reduced when the C-terminal region of BAF250 is deleted. This region of BAF250 is capable of interacting directly with the glucocorticoid receptor in vitro. Our data suggest that BAF250 confers specificity to the human BAF complex and may recruit the complex to its targets through either protein-DNA or protein-protein interactions.
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Affiliation(s)
- Z Nie
- Laboratory of Genetics, National Institute on Aging, National Institutes of Health, Baltimore, Maryland 21224, USA
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Abstract
Adenosine diphosphate-ribosylation factor (Arf) proteins are members of the Arf arm of the Ras superfamily of guanosine triphosphate (GTP)-binding proteins. Arfs are named for their activity as cofactors for cholera toxin-catalyzed adenosine diphosphate-ribosylation of the heterotrimeric G protein Gs. Physiologically, Arfs regulate membrane traffic and the actin cytoskeleton. Arfs function both constitutively within the secretory pathway and as targets of signal transduction in the cell periphery. In each case, the controlled binding and hydrolysis of GTP is critical to Arf function. The activities of some guanine nucleotide exchange factors (GEFs) and guanosine triphosphatase (GTPase)-activating proteins (GAPs) are stimulated by phosphoinositides, including phosphatidylinositol 3,4,5-trisphosphate (PIP3) and phosphatidylinositol 4,5-bisphosphate (PIP2), and phosphatidic acid (PA), likely providing both a means to respond to regulatory signals and a mechanism to coordinate GTP binding and hydrolysis. Arfs affect membrane traffic in part by recruiting coat proteins, including COPI and clathrin adaptor complexes, to membranes. However, Arf function likely involves many additional biochemical activities. Arf activates phospholipase D and phosphatidylinositol 4-phosphate 5-kinase with the consequent production of PA and PIP2, respectively. In addition to mediating Arf's effects on membrane traffic and the actin cytoskeleton, PA and PIP2 are involved in the regulation of Arf. Arf also works with Rho family proteins to affect the actin cytoskeleton. Several Arf-binding proteins suspected to be effectors have been identified in two-hybrid screens. Arf-dependent biochemical activities, actin cytoskeleton changes, and membrane trafficking may be integrally related. Understanding Arf's role in complex cellular functions such as protein secretion or cell movement will involve a description of the temporal and spatial coordination of these multiple Arf-dependent events.
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Affiliation(s)
- P A Randazzo
- Laboratory of Cellular Oncology, Division of Basic Sciences, National Cancer Institute, Bethesda, MD, USA.
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48
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Xue Y, Canman JC, Lee CS, Nie Z, Yang D, Moreno GT, Young MK, Salmon ED, Wang W. The human SWI/SNF-B chromatin-remodeling complex is related to yeast rsc and localizes at kinetochores of mitotic chromosomes. Proc Natl Acad Sci U S A 2000; 97:13015-20. [PMID: 11078522 PMCID: PMC27170 DOI: 10.1073/pnas.240208597] [Citation(s) in RCA: 219] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2000] [Indexed: 02/08/2023] Open
Abstract
The SWI/SNF family of chromatin-remodeling complexes facilitates gene expression by helping transcription factors gain access to their targets in chromatin. SWI/SNF and Rsc are distinctive members of this family from yeast. They have similar protein components and catalytic activities but differ in biological function. Rsc is required for cell cycle progression through mitosis, whereas SWI/SNF is not. Human complexes of this family have also been identified, which have often been considered related to yeast SWI/SNF. However, all human subunits identified to date are equally similar to components of both SWI/SNF and Rsc, leaving open the possibility that some or all of the human complexes are rather related to Rsc. Here, we present evidence that the previously identified human SWI/SNF-B complex is indeed of the Rsc type. It contains six components conserved in both Rsc and SWI/SNF. Importantly, it has a unique subunit, BAF180, that harbors a distinctive set of structural motifs characteristic of three components of Rsc. Of the two mammalian ATPases known to be related to those in the yeast complexes, human SWI/SNF-B contains only the homolog that functions like Rsc during cell growth. Immunofluorescence studies with a BAF180 antibody revealed that SWI/SNF-B localizes at the kinetochores of chromosomes during mitosis. Our data suggest that SWI/SNF-B and Rsc represent a novel subfamily of chromatin-remodeling complexes conserved from yeast to human, and could participate in cell division at kinetochores of mitotic chromosomes.
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Affiliation(s)
- Y Xue
- Laboratory of Genetics, National Institute on Aging, National Institutes of Health, 333 Cassell Drive, TRIAD Center Room 4000, Baltimore, MD 21224, USA
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Jackson TR, Brown FD, Nie Z, Miura K, Foroni L, Sun J, Hsu VW, Donaldson JG, Randazzo PA. ACAPs are arf6 GTPase-activating proteins that function in the cell periphery. J Cell Biol 2000; 151:627-38. [PMID: 11062263 PMCID: PMC2185579 DOI: 10.1083/jcb.151.3.627] [Citation(s) in RCA: 155] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2000] [Accepted: 09/18/2000] [Indexed: 11/22/2022] Open
Abstract
The GTP-binding protein ADP-ribosylation factor 6 (Arf6) regulates endosomal membrane trafficking and the actin cytoskeleton in the cell periphery. GTPase-activating proteins (GAPs) are critical regulators of Arf function, controlling the return of Arf to the inactive GDP-bound state. Here, we report the identification and characterization of two Arf6 GAPs, ACAP1 and ACAP2. Together with two previously described Arf GAPs, ASAP1 and PAP, they can be grouped into a protein family defined by several common structural motifs including coiled coil, pleckstrin homology, Arf GAP, and three complete ankyrin-repeat domains. All contain phosphoinositide-dependent GAP activity. ACAP1 and ACAP2 are widely expressed and occur together in the various cultured cell lines we examined. Similar to ASAP1, ACAP1 and ACAP2 were recruited to and, when overexpressed, inhibited the formation of platelet-derived growth factor (PDGF)-induced dorsal membrane ruffles in NIH 3T3 fibroblasts. However, in contrast with ASAP1, ACAP1 and ACAP2 functioned as Arf6 GAPs. In vitro, ACAP1 and ACAP2 preferred Arf6 as a substrate, rather than Arf1 and Arf5, more so than did ASAP1. In HeLa cells, overexpression of either ACAP blocked the formation of Arf6-dependent protrusions. In addition, ACAP1 and ACAP2 were recruited to peripheral, tubular membranes, where activation of Arf6 occurs to allow membrane recycling back to the plasma membrane. ASAP1 did not inhibit Arf6-dependent protrusions and was not recruited by Arf6 to tubular membranes. The additional effects of ASAP1 on PDGF-induced ruffling in fibroblasts suggest that multiple Arf GAPs function coordinately in the cell periphery.
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Affiliation(s)
- T R Jackson
- Laboratory of Cellular Oncology, Division of Basic Sciences, National Cancer Institute, Bethesda, Maryland 20892-4255, USA
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50
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Spiegel K, Leproult R, Colecchia EF, L'Hermite-Balériaux M, Nie Z, Copinschi G, Van Cauter E. Adaptation of the 24-h growth hormone profile to a state of sleep debt. Am J Physiol Regul Integr Comp Physiol 2000; 279:R874-83. [PMID: 10956244 DOI: 10.1152/ajpregu.2000.279.3.r874] [Citation(s) in RCA: 108] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
In normal men, the majority of GH secretion occurs in a single large postsleep onset pulse that is suppressed during total sleep deprivation. We examined the impact of semichronic partial sleep loss, a highly prevalent condition, on the 24-h growth hormone profile. Eleven young men were studied after six nights of restricted bedtimes (0100-0500) and after 7 nights of extended bedtimes (2100-0900). Slow-wave sleep (SWS) was estimated as the duration of stages III and IV. Slow-wave activity (SWA) was calculated as electroencephalogram power density in the 0.5- to 3-Hz frequency range. During the state of sleep debt, the GH secretory pattern was biphasic, with both a presleep onset "circadian" pulse and a postsleep onset pulse. Postsleep onset GH secretion was negatively related to presleep onset secretion and tended to be positively correlated with the amount of concomitant SWA. When sleep was restricted, both SWS and SWA were increased during early sleep. Unexpectedly, the increase in SWA affected the second, rather than the first, SWA cycle, suggesting that presleep onset GH secretion may have limited SWA in the first cycle, possibly via an inhibition of central GH-releasing hormone activity. Thus neither the GH profile nor the distribution of SWA conformed with predictions from acute sleep deprivation studies, indicating that adaptation mechanisms are operative during chronic partial sleep loss.
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Affiliation(s)
- K Spiegel
- Department of Medicine, University of Chicago, Chicago, Illinois 60637, USA
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