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See L, Zafar S, Fu D, Ha DH, Walsh LJ, Lopez Silva C. Tooth Discoloration from 2 Silver Fluorides Used in Adults with Special Needs: A Randomized Trial. JDR Clin Trans Res 2024:23800844241246199. [PMID: 38760973 DOI: 10.1177/23800844241246199] [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: 05/20/2024] Open
Abstract
BACKGROUND Discoloration of carious lesions after application of silver diamine fluoride lowers patient acceptance and limits its wider use for caries arrest. OBJECTIVE To assess lesion and tooth color changes from 2 novel silver fluoride (AgF) products and its relationship to caries activity (clinical visuo-tactile scores) and bacterial load (using laser fluorescence with the DIAGNOdent). METHODS A split-mouth design was followed, with matched smooth surface carious lesions in the same arch in adults with special needs randomized for 1-min treatments with AgF/potassium iodide (KI) (Riva Star Aqua, SDI) and AgF/stannous fluoride (SnF2) (Caries Status Disclosing Solution; Whiteley). Standardized images taken at baseline, immediately postoperatively, and at 3-mo review were subjected to digital image analysis to calculate delta-E and to track changes in luminosity of carious lesions. RESULTS Twelve participants were recruited in the study. A total of 56 teeth (28 pairs) were included. Significantly greater changes were seen in treated lesions than in the adjacent noncarious natural tooth structure, both immediately after treatment and at the 3-mo review (P < 0.0001). Color change and caries activity were not affected by tooth type, tooth location, plaque status, salivary status, or special needs condition. AgF/SnF2 caused transitory darkening immediately on application, while AgF/KI caused the immediate formation of yellow deposits (silver iodide). Both products caused significant darkening of treated lesions at 3 mo (P = 0.0009; P = 0.0361), with no differences between them (P = 0.506). Responding lesions showed larger and more perceptible color changes immediately after either AgF application (P = 0.002; P = 0.024). CONCLUSIONS Both AgF products were highly effective for caries arrest in this patient population. Despite minor differences in the appearance of treated lesions at the time of application, both products lead to similar darkening of treated sites at 3 mo. KNOWLEDGE TRANSFER STATEMENT This study shows the usefulness of silver fluoride used in conjunction with potassium iodide or stannous fluoride for achieving caries arrest in smooth surface lesions in adults with special needs. Patients need to be informed that long-term staining of the lesion occurs with both, similar to silver diamine fluoride.
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Affiliation(s)
- L See
- University of Queensland, School of Dentistry, Brisbane, QLD, Australia
| | - S Zafar
- University of Queensland, School of Dentistry, Brisbane, QLD, Australia
| | - D Fu
- University of Queensland, School of Dentistry, Brisbane, QLD, Australia
| | - D H Ha
- University of Queensland, School of Dentistry, Brisbane, QLD, Australia
| | - L J Walsh
- University of Queensland, School of Dentistry, Brisbane, QLD, Australia
| | - C Lopez Silva
- University of Queensland, School of Dentistry, Brisbane, QLD, Australia
- Oral Health Services, Metro North Oral Health Center, Queensland Health, Brisbane, Australia
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2
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Ahlers-Dannen KE, Yang J, Spicer MM, Fu D, DeVore A, Fisher RA. A splice acceptor variant in RGS6 associated with intellectual disability, microcephaly, and cataracts disproportionately promotes expression of a subset of RGS6 isoforms. J Hum Genet 2024; 69:145-152. [PMID: 38332109 DOI: 10.1038/s10038-024-01220-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Revised: 01/11/2024] [Accepted: 01/18/2024] [Indexed: 02/10/2024]
Abstract
Intellectual disability (ID) is associated with an increased risk of developing psychiatric disorders, suggesting a common underlying genetic factor. Importantly, altered signaling and/or expression of regulator of G protein signaling 6 (RGS6) is associated with ID and numerous psychiatric disorders. RGS6 is highly conserved and undergoes complex alternative mRNA splicing producing ~36 protein isoforms with high sequence similarity historically necessitating a global approach in functional studies. However, our recent analysis in mice revealed RGS6 is most highly expressed in CNS with RGS6L(+GGL) isoforms predominating. A previously reported genetic variant in intron 17 of RGS6 (c.1369-1G>C), associated with ID, may provide further clues into RGS6L(+GGL) isoform functional delineation. This variant was predicted to alter a highly conserved canonical 3' acceptor site creating an alternative branch point within exon 18 (included in a subset of RGS6L(+GGL) transcripts) and a frameshift forming an early stop codon. We previously identified this alternative splice site and demonstrated its use generates RGS6Lζ(+GGL) isoforms. Here, we show that the c.1369-1G>C variant disrupts the canonical, preferred (>90%) intron 17 splice site and leads to the exclusive use of the alternate exon 18 splice site, inducing disproportionate expression of a subset of isoforms, particularly RGS6Lζ(+GGL). Furthermore, RGS6 global knockout mice do not exhibit ID. Thus, ID caused by the c.1369-1G>C variant likely results from altered RGS6 isoform expression, rather than RGS6 isoform loss. In summary, these studies highlight the importance of proper RGS6 splicing and identify a previously unrecognized role of G protein signaling in ID.
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Affiliation(s)
- K E Ahlers-Dannen
- Department of Neuroscience and Pharmacology, The Roy J and Lucille A Carver College of Medicine, University of Iowa, Iowa City, IA, 52242, USA
| | - J Yang
- Department of Neuroscience and Pharmacology, The Roy J and Lucille A Carver College of Medicine, University of Iowa, Iowa City, IA, 52242, USA
| | - M M Spicer
- Department of Neuroscience and Pharmacology, The Roy J and Lucille A Carver College of Medicine, University of Iowa, Iowa City, IA, 52242, USA
| | - D Fu
- Department of Neuroscience and Pharmacology, The Roy J and Lucille A Carver College of Medicine, University of Iowa, Iowa City, IA, 52242, USA
| | - A DeVore
- Department of Neuroscience and Pharmacology, The Roy J and Lucille A Carver College of Medicine, University of Iowa, Iowa City, IA, 52242, USA
| | - R A Fisher
- Department of Neuroscience and Pharmacology, The Roy J and Lucille A Carver College of Medicine, University of Iowa, Iowa City, IA, 52242, USA.
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Fu D, Yang F, Zhang J, Xiang Z, Wang Y. Near-Infrared Rechargeable Persistent Luminescence Nanoparticles for Biomedical Implants In Vivo Noninvasive Bioimaging. ACS Appl Mater Interfaces 2023; 15:53310-53317. [PMID: 37947316 DOI: 10.1021/acsami.3c12947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2023]
Abstract
Luminescent imaging has garnered significant attention for in vivo tracking of biomedical implants during and after surgery due to its human friendliness, affordability, and high sensitivity. However, conventional fluorescent probes are susceptible to background autofluorescence interference from living tissues, often resulting in poor signal-to-noise ratios. Herein, we report a background interference-free persistent luminescent implant (PLI) with excellent persistent luminescence (PL) performance, which can be clearly and long-term detected by an optical imaging system after implantation. Rechargeable near-infrared persistent luminescence nanoparticles (PLNPs) were prepared first via a simple hydrothermal approach and then modified by PEGylation to improve their hydrophilicity, biocompatibility, and compatibility with polymer substrates. The PEGylated PLNPs were facilely complexed into a polymer matrix to fabricate the PLI. The obtained PLIs can well inherit the PL properties of PLNPs, exhibiting good PL optical imaging performance without tissue autofluorescence interference. Furthermore, both PLNPs and PLIs possess good biocompatibility, and the addition of PLNPs has no negative impact on the biocompatibility of the polymer matrix. This work fully utilizes the luminescent properties of PLNPs and adapts this PL to the field of biomedical implant imaging, which provides new insight for designing biomedical imaging systems.
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Affiliation(s)
- Daihua Fu
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China
| | - Fan Yang
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China
| | - Jiayi Zhang
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China
| | - Zhen Xiang
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China
| | - Yunbing Wang
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China
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4
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Wan H, Li Y, Qin Y, An Y, Yan H, Liu X, Zhang H, Hu C, Li L, Fu D, Yang Y, Dai Y, Luo R, Yang L, Zhang B, Wang Y. Polyphenol-mediated sandwich-like coating promotes endothelialization and vascular healing. Biomaterials 2023; 302:122346. [PMID: 37832504 DOI: 10.1016/j.biomaterials.2023.122346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Revised: 09/27/2023] [Accepted: 10/03/2023] [Indexed: 10/15/2023]
Abstract
Drug-eluting stents have become one of the most effective methods to treat cardiovascular diseases. However, this therapeutic strategy may lead to thrombosis, stent restenosis, and intimal hyperplasia and prevent re-endothelialization. In this study, we selected 3-aminophenylboronic acid-modified hyaluronic acid and carboxylate chitosan as polyelectrolyte layers and embedded an epigallocatechin-3-gallate-tanshinone IIA sulfonic sodium (EGCG-TSS) complex to develop a sandwich-like layer-by-layer coating. The introduction of a functional molecular EGCG-TSS complex improved not only the biocompatibility of the coating but also its stability by enriching the interaction between the polyelectrolyte coatings through electrostatic interactions, hydrogen bonding, π-π stacking, and covalent bonding. We further elucidated the effectiveness of sandwich-like coatings in regulating the inflammatory response, smooth muscle cell growth behavior, stent thrombosis and restenosis suppression, and vessel re-endothelialization acceleration via in vivo and in vitro. Conclusively, we demonstrated that sandwich-like coating assisted by an EGCG-TSS complex may be an effective surface modification strategy for cardiovascular therapeutic applications.
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Affiliation(s)
- Huining Wan
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, Sichuan, 610065, China
| | - Yanyan Li
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, Sichuan, 610065, China
| | - Yumei Qin
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, Sichuan, 610065, China
| | - Yongqi An
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, Sichuan, 610065, China
| | - Hui Yan
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, Sichuan, 610065, China
| | - Xiyu Liu
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, Sichuan, 610065, China
| | - Hao Zhang
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, Sichuan, 610065, China
| | - Cheng Hu
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, Sichuan, 610065, China
| | - Linhua Li
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, Sichuan, 610065, China
| | - Daihua Fu
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, Sichuan, 610065, China
| | - Yuan Yang
- Sichuan Xingtai Pule Medical Technology Co Ltd, Chengdu, Sichuan, 610045, China
| | - Yan Dai
- Sichuan Xingtai Pule Medical Technology Co Ltd, Chengdu, Sichuan, 610045, China
| | - Rifang Luo
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, Sichuan, 610065, China
| | - Li Yang
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, Sichuan, 610065, China
| | - Bo Zhang
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, Sichuan, 610065, China.
| | - Yunbing Wang
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, Sichuan, 610065, China
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5
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Xiang Z, Zhang J, Zhou C, Zhang B, Chen N, Li M, Fu D, Wang Y. Near-Infrared Remotely Controllable Shape Memory Biodegradable Occluder Based on Poly(l-lactide- co-ε-caprolactone)/Gold Nanorod Composite. ACS Appl Mater Interfaces 2023; 15:42341-42353. [PMID: 37647023 DOI: 10.1021/acsami.3c09852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
Biodegradable occluders, which can efficiently eliminate the complications caused by permanent foreign implants, are considered to be the next-generation devices for the interventional treatment of congenital heart disease. However, the controllability of the deployment process of degradable occluders remains a challenge. In this work, a near-infrared (NIR) remotely controllable biodegradable occluder is explored by integrating poly(l-lactide-co-ε-caprolactone) (PLCL) with poly(ethylene glycol)-modified gold nanorods (GNR/PEG). The caprolactone structural units can effectively increase the toughness of poly(l-lactide) and reduce the shape-memory transition temperature of the occluder to a more tissue-friendly temperature. Gold nanorods endow the PLCL-GNR/PEG composite with an excellent photothermal effect. The obtained occluder can be easily loaded into a catheter for transport and spatiotemporally expanded under irradiation with near-infrared light to block the defect site. Both in vitro and in vivo biological experiments showed that PLCL-GNR/PEG composites have good biocompatibility, and the PEGylated gold nanorods could improve the hemocompatibility of the composites to a certain extent by enhancing their hydrophilicity. As a thermoplastic shape-memory polymer, PLCL-GNR/PEG can be easily processed into various forms and structures for different patients and lesions. Therefore, PLCL-GNR/PEG has the potential to be considered as a competitive biodegradable material not only for occluders but also for other biodegradable implants.
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Affiliation(s)
- Zhen Xiang
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China
| | - Jiayi Zhang
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China
| | - Chen Zhou
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China
| | - Bo Zhang
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China
| | - Nuoya Chen
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China
| | - Mingyu Li
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China
| | - Daihua Fu
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China
| | - Yunbing Wang
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China
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Krech R, Peters S, Kroemer H, Fu D, Giuliani R, Sehouli J, Ilbawi A, Prasad V, Ullrich A. Tobacco cessation and the role of ESMO and medical oncologists: addressing the specific needs of cancer patients in times of the COVID-19 pandemic. ESMO Open 2023; 8:101579. [PMID: 37393095 PMCID: PMC10229195 DOI: 10.1016/j.esmoop.2023.101579] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Accepted: 04/15/2023] [Indexed: 07/03/2023] Open
Affiliation(s)
- R Krech
- Health Promotion Department, World Health Organization, Geneva, Switzerland
| | - S Peters
- Department of Oncology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland; European Society for Medical Oncology (ESMO), Lugano, Switzerland
| | - H Kroemer
- Executive Board Charité - Universitätmedizin, Berlin, Germany
| | - D Fu
- Health Promotion Department, World Health Organization, Geneva, Switzerland.
| | - R Giuliani
- European Society for Medical Oncology (ESMO), Lugano, Switzerland; Guy's and St Thomas' NHS Foundation Trust, London, UK
| | - J Sehouli
- Department of Gynaecology with Center for Oncological Surgery Charité - Universitätsmedizin Berlin, Germany
| | - A Ilbawi
- Department of Noncommunicable Diseases, World Health Organization, Geneva, Switzerland
| | - V Prasad
- Health Promotion Department, World Health Organization, Geneva, Switzerland
| | - A Ullrich
- Department of Gynaecology with Center for Oncological Surgery Charité - Universitätsmedizin Berlin, Germany
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7
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Liu YY, Li ZX, Tan ZJ, Fang W, Tan HM, Fu D, Huang ZG, Liu JW, Liu T, He GH, Zhu S, Ma WJ. [A time-series study on the association of ambient temperature with daily outpatient visits of eczema in Huizhou city]. Zhonghua Yu Fang Yi Xue Za Zhi 2022; 56:1423-1428. [PMID: 36274608 DOI: 10.3760/cma.j.cn112150-20220402-00316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Objective: To explore the impact of environmental temperature exposure on eczema visits. Methods: Eczema clinic data from January 1, 2016 to December 31, 2019 were collected from the Huizhou Dermatology Hospital, and data on meteorological factors (average daily temperature and relative humidity) for the same period were derived from 86 meteorological stations of the Guangdong Provincial Climate Center. A distributed lag nonlinear model (DLNM) was used to assess the lagged effect of environmental temperature exposure on eczema, and a natural smooth spline function was used to control the nonlinear confounding of humidity. Results: There were 254 053 eczema outpatient visits at the Huizhou Dermatology Hospital within four years, with an average of 173.89 visits per day. The relationship between daily average temperature and the number of visits was non-linear (U shape). The risk of eczema increased by 2.20% (1.19%-3.21%) for every 1 ℃ decrease for the low temperature, and increased by 2.35% (1.24%-3.5%) for every 1 ℃ increase for the high temperature. The effect of high temperature was greater than that of low temperature. In all cases, 1.60% (0.44%-2.68%) of eczema outpatient visits were attributed to low temperature and the attributable number was 4 065 (1 128-6 798), while 6.33% (1.40%-10.87%) of eczema outpatient visits were due to high temperature and the attributable number was 16 082 (3 557-27 616). Conclusion: Both high temperature and low temperature are associated with increased risk of eczema.
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Affiliation(s)
- Y Y Liu
- School of Medicine, Jinan University, Guangzhou 510632, China
| | - Z X Li
- School of Medicine, Jinan University, Guangzhou 510632, China
| | - Z J Tan
- School of Medicine, Jinan University, Guangzhou 510632, China
| | - W Fang
- School of Medicine, Jinan University, Guangzhou 510632, China
| | - H M Tan
- School of Medicine, Jinan University, Guangzhou 510632, China
| | - D Fu
- School of Medicine, Jinan University, Guangzhou 510632, China
| | - Z G Huang
- School of Medicine, Jinan University, Guangzhou 510632, China
| | - J W Liu
- Huizhou Dermatology Hospital, Huizhou 516008, China
| | - T Liu
- School of Medicine, Jinan University, Guangzhou 510632, China
| | - G H He
- School of Medicine, Jinan University, Guangzhou 510632, China
| | - S Zhu
- School of Medicine, Jinan University, Guangzhou 510632, China
| | - W J Ma
- School of Medicine, Jinan University, Guangzhou 510632, China
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Zhang B, Qin Y, Yang L, Wu Y, Chen N, Li M, Li Y, Wan H, Fu D, Luo R, Yuan L, Wang Y. A Polyphenol-Network-Mediated Coating Modulates Inflammation and Vascular Healing on Vascular Stents. ACS Nano 2022; 16:6585-6597. [PMID: 35301848 DOI: 10.1021/acsnano.2c00642] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Localized drug delivery from drug-eluting stents (DESs) to target sites provides therapeutic efficacy with minimal systemic toxicity. However, DESs failure may cause thrombosis, delay arterial healing, and impede re-endothelialization. Bivalirudin (BVLD) and nitric oxide (NO) promote arterial healing. Nevertheless, it is difficult to combine hydrophilic signal molecules with hydrophobic antiproliferative drugs while maintaining their bioactivity. Here, we fabricated a micro- to nanoscale network assembly consisting of copper ion and epigallocatechin gallate (EGCG) via π-π interactions, metal coordination, and oxidative polymerization. The network incorporated rapamycin and immobilized BVLD by the thiol-ene "click" reaction and provided sustained rapamycin and NO release. Unlike rapamycin-eluting stents, those coated with the EGCG-Cu-rapamycin-BVLD complex favored competitive endothelial cell (EC) growth over that of smooth muscle cells, exhibited long-term antithrombotic efficacy, and attenuated the negative impact of rapamycin on the EC. In vivo stent implantation demonstrated that the coating promoted endothelial regeneration and hindered restenosis. Therefore, the polyphenol-network-mediated surface chemistry can be an effective strategy for the engineering of multifunctional surfaces.
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Affiliation(s)
- Bo Zhang
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, 610065, China
| | - Yumei Qin
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, 610065, China
| | - Li Yang
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, 610065, China
| | - Ye Wu
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, 610065, China
| | - Nuoya Chen
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, 610065, China
| | - Mingyu Li
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, 610065, China
| | - Yanyan Li
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, 610065, China
| | - Huining Wan
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, 610065, China
| | - Daihua Fu
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, 610065, China
| | - Rifang Luo
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, 610065, China
| | - Lu Yuan
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, 610065, China
| | - Yunbing Wang
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, 610065, China
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Zhao WL, Zhang MC, Fu D. [How I diagnose and treat diffuse large B cell lymphoma]. Zhonghua Xue Ye Xue Za Zhi 2021; 42:978-984. [PMID: 35045667 PMCID: PMC8770886 DOI: 10.3760/cma.j.issn.0253-2727.2021.12.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Download PDF] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Indexed: 11/16/2022]
Affiliation(s)
- W L Zhao
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - M C Zhang
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - D Fu
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
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10
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Wang Y, Wu Y, Long L, Yang L, Fu D, Hu C, Kong Q, Wang Y. Inflammation-Responsive Drug-Loaded Hydrogels with Sequential Hemostasis, Antibacterial, and Anti-Inflammatory Behavior for Chronically Infected Diabetic Wound Treatment. ACS Appl Mater Interfaces 2021; 13:33584-33599. [PMID: 34240605 DOI: 10.1021/acsami.1c09889] [Citation(s) in RCA: 126] [Impact Index Per Article: 42.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Stimuli-responsive hydrogels possess unique advantages in drug delivery due to their variable performance and status based on the external environment. In the present study, a dual-responsive (pH and reactive oxygen species (ROS)) hydrogel was prepared to realize drug release properties under inflammatory stimulation. By grafting 3-carboxy-phenylboronic acid to the gelatin molecular backbone and cross-linking with poly(vinyl alcohol), we successfully synthesized the inflammation-responsive drug-loaded hydrogels after encapsulation with vancomycin-conjugated silver nanoclusters (VAN-AgNCs) and pH-sensitive micelles loaded with nimesulide (NIM). This novel design not only retained the dynamic functions of hydrogels, such as injectability, self-healing, and remodeling, but also realized sequential and on-demand drug delivery at diabetic-infected wound sites. In this work, we found that the hydrogel exhibited excellent biocompatibility and hemostasis properties owing to the enhanced cell-adhesive property of the gelatin component. The significant antibacterial and anti-inflammatory effect of the hydrogel was demonstrated in an in vitro experiment. Moreover, in the in vivo experiment, the hydrogel was found to play a role in promoting infected wound healing through sequential hemostasis and antibacterial and anti-inflammatory processes. Collectively, this inflammation-responsive hydrogel design containing VAN-AgNCs and NIM-loaded micelles has great potential in the application of chronically infected diabetic wound treatment, as well as in other inflammatory diseases.
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Affiliation(s)
- Yu Wang
- Department of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China
| | - Ye Wu
- Department of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China
| | - Linyu Long
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, Sichuan, China
| | - Li Yang
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, Sichuan, China
| | - Daihua Fu
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, Sichuan, China
| | - Cheng Hu
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, Sichuan, China
| | - Qingquan Kong
- Department of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China
- Med-X Center for Materials, Sichuan University, Chengdu 610064, Sichuan, China
| | - Yunbing Wang
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, Sichuan, China
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Wang K, Lei Y, Wang X, Duan J, Cui L, Zhang Y, Zhao Z, Bai Y, Tan X, Fu D, Zhao C, Yang B, Teng Y. P75.08 KDM5C Mutation Is Associated with Better Immunotherapy Outcomes in Non–Small Cell Lung Cancer. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.1042] [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: 11/28/2022]
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12
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Fu D, Pu W, Escorihuela J, Wang X, Wang Z, Chen S, Sun S, Wang S, Zuilhof H, Xia H. Acylsemicarbazide Moieties with Dynamic Reversibility and Multiple Hydrogen Bonding for Transparent, High Modulus, and Malleable Polymers. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c01667] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Daihua Fu
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute, Sichuan University, Chengdu 610065, China
| | - Wuli Pu
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute, Sichuan University, Chengdu 610065, China
| | - Jorge Escorihuela
- Department of Organic Chemistry, Universidad de Valencia, Av. Vicent Andrés Estellés s/n, Burjassot 46100, Spain
| | - Xiaorong Wang
- College of Chemistry, Chemical Engineering and Environmental Engineering, Liaoning Shihua University, Fushun, Liaoning 113001, China
| | - Zhanhua Wang
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute, Sichuan University, Chengdu 610065, China
| | - Siyao Chen
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute, Sichuan University, Chengdu 610065, China
| | - Shaojie Sun
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute, Sichuan University, Chengdu 610065, China
| | - Shuo Wang
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute, Sichuan University, Chengdu 610065, China
| | - Han Zuilhof
- Laboratory of Organic Chemistry, Wageningen University, Stippeneng 4, Wageningen 6708 WE, The Netherlands
- Department of Chemical and Materials Engineering, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Hesheng Xia
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute, Sichuan University, Chengdu 610065, China
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13
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Xu N, Cui Y, Fu D, Sun F. Tear inflammatory cytokines and ocular surface changes in patients with active thyroid eye disease treated with high-dose intravenous glucocorticoids. J Endocrinol Invest 2020; 43:901-910. [PMID: 31927748 DOI: 10.1007/s40618-019-01174-8] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Accepted: 12/22/2019] [Indexed: 12/11/2022]
Abstract
PURPOSE To evaluate high-dose intravenous glucocorticoid treatment on tear inflammatory cytokines and ocular surface parameters in patients with active TED. Correlations between tear inflammatory cytokines and clinical parameters were also investigated. METHODS This prospective pilot study included 15 moderate-to-severe and active TED patients. Control group consist of 15 sex and age-matched healthy subjects. All TED patients were treated with high-dose intravenous methylprednisolone with cumulative dose of 4.5 g during the therapy subdivided into 12 weekly infusions. Tear concentrations of interleukin (IL)-1β, IL-6, IL-8, IL-10, IL-17A, tumor necrosis factor (TNF)-α, and vascular endothelial growth factor (VEGF) were measured by multiplex bead analysis in TED patients at baseline and 12 weeks after treatment. Ocular surface disease index (OSDI), tear break-up time (TBUT), corneal fluorescent staining, and Schirmer's test were obtained from TED and controls. RESULTS All baseline cytokine levels except for IL-17A were significantly elevated in active TED patients compared with controls. Concentrations of IL-1β, IL-6, IL-8, TNF-α, and VEGF were significantly decreased at 12 weeks compared with baseline. OSDI and TBUT showed significant improvement at 6 and 12 weeks. There were significant positive correlations between IL-6, IL-8, and CAS, and negative correlation was found between IL-6 level and TED duration before methylprednisolone treatment. The reduction of IL-6, IL-8, and VEGF were positive correlated with the reduction in CAS at 12 weeks. CONCLUSIONS High-dose glucocorticoids treatment improved ocular surface symptom, increased the tear film stability, and decreased tear inflammatory cytokines in active TED. The reduction of the inflammatory cytokines is consistent with the improvement of clinical parameters.
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Affiliation(s)
- N Xu
- Department of Oculoplastic and Orbital Diseases, Tianjin Medical University Eye Hospital, No. 251, Fukang Road, Nankai District, Tianjin, 300384, China
- Department of Ophthalmology, Fujian Provincial Hospital, Fuzhou, China
- Department of Ophthalmology and Optometry, Fujian Medical University, Fuzhou, China
| | - Y Cui
- Department of Ophthalmology, Fujian Medical University Union Hospital, Fuzhou, China
- Department of Ophthalmology and Optometry, Fujian Medical University, Fuzhou, China
| | - D Fu
- Department of Ophthalmology, Fujian Medical University Union Hospital, Fuzhou, China
- Department of Ophthalmology and Optometry, Fujian Medical University, Fuzhou, China
| | - F Sun
- Department of Oculoplastic and Orbital Diseases, Tianjin Medical University Eye Hospital, No. 251, Fukang Road, Nankai District, Tianjin, 300384, China.
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14
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Xu Y, Zhang S, Fu D, Lu D. Circulating miR-374b-5p negatively regulates osteoblast differentiation in the progression of osteoporosis via targeting Wnt3 AND Runx2. J BIOL REG HOMEOS AG 2020; 34:345-355. [PMID: 32548991 DOI: 10.23812/19-507-a-9] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Osteoporosis is defined as an aging-related skeletal disorder involving deterioration of bone mass and bone structure, and consequently, increased risk of fractures. Emerging evidence indicates the dysregulation of microRNAs (miRNAs) in the progression of osteoporosis. However, whether such associated miRNAs control osteoblast differentiation or constitute therapeutic targets remains elusive. In the present study, we found elevated circulating miR-374b-5p level associated with postmenopausal osteoporosis. miR-374b-5p served as a critical suppressor of osteoblast differentiation. We further identified that miR-374b-5p directly targeted Wnt family member 3 (Wnt3) and Runt-related transcription factor 2 (Runx2) through its 3'-untranslated regions (3'UTRs). Moreover, the antagonist of miR-374b-5p could promote bone formation in ovariectomy (OVX)-induced mice. Together, our results revealed that miR-374b-5p directly targeted Wnt3 and Runx2, negatively regulating osteoblast differentiation and bone formation. Collectively, circulating miR-374b-5p in the serum might serve as a potential diagnostic and therapeutic strategy for osteoporosis.
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Affiliation(s)
- Y Xu
- Department of Gynaecology and Obstetrics, Northern Jiangsu People's Hospital, Yangzhou, P.R. China
| | - S Zhang
- Department of Gynaecology and Obstetrics, Northern Jiangsu People's Hospital, Yangzhou, P.R. China
| | - D Fu
- Department of Gynaecology and Obstetrics, Northern Jiangsu People's Hospital, Yangzhou, P.R. China
| | - D Lu
- Department of Gynaecology and Obstetrics, Northern Jiangsu People's Hospital, Yangzhou, P.R. China
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15
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Fu D, Zhang P, Wang L, Liu W, Tan H, Di M, Cai M, Zhang P, Tao K, Wang G, Jiang C, Wang Z. Emergency abdominal surgery in COVID-19 patients: a note of caution from Wuhan. Br J Surg 2020; 107:e262. [PMID: 32491190 PMCID: PMC7300454 DOI: 10.1002/bjs.11722] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Accepted: 04/30/2020] [Indexed: 12/23/2022]
Affiliation(s)
- D Fu
- Department of Gastrointestinal Surgery, Wuhan, China
| | - Pei Zhang
- Department of Gastrointestinal Surgery, Wuhan, China
| | - L Wang
- Clinical Laboratory, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - W Liu
- Department of Colorectal and Anal Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - H Tan
- Department of Gastrointestinal Surgery, Taihe Hospital, Hubei University of Medicine, Shiyan, China
| | - M Di
- Department of Gastrointestinal Surgery, Taihe Hospital, Hubei University of Medicine, Shiyan, China
| | - M Cai
- Department of Gastrointestinal Surgery, Wuhan, China
| | - Peng Zhang
- Department of Gastrointestinal Surgery, Wuhan, China
| | - K Tao
- Department of Gastrointestinal Surgery, Wuhan, China
| | - G Wang
- Department of Gastrointestinal Surgery, Wuhan, China
| | - C Jiang
- Department of Colorectal and Anal Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Z Wang
- Department of Gastrointestinal Surgery, Wuhan, China
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16
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Jia C, Li C, Fu D, Chu M, Zan L, Wang H, Liang C, Yan P. Identification of genetic loci associated with growth traits at weaning in yak through a genome-wide association study. Anim Genet 2019; 51:300-305. [PMID: 31877578 DOI: 10.1111/age.12897] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/02/2019] [Indexed: 12/18/2022]
Abstract
A multilocus GWAS was performed to explore the genetic architecture of four growth traits in yak. In total, 354 female yaks for which measurements of body weight (BW), withers height (WH), body length (BL) and chest girth (CG) at weaning were available underwent genotyping with the Illumina BovineHD BeadChip (770K). After quality control, we retained 98 688 SNPs and 354 animals for GWAS analysis. We identified seven, 18, seven and nine SNPs (corresponding to seven, 17, seven and eight candidate genes) associated with BW, WH, BL and CG at weaning respectively. Interestingly, most of these candidate genes were reported to be involved in growth-related processes such as muscle formation, lipid deposition, feed efficiency, carcass composition and development of the central and peripheral nervous system. Our results offer novel insight into the molecular architecture underpinning yak growth traits. Further functional analyses are thus warranted to explore the molecular mechanisms whereby these genes affect these traits of interest.
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Affiliation(s)
- C Jia
- Key Laboratory of Yak Breeding Engineering of Gansu Province, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou, 730050, China.,College of Animal Science and Technology, Northwest A&F University, Yangling, 712100, China
| | - C Li
- Key Laboratory of Yak Breeding Engineering of Gansu Province, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou, 730050, China
| | - D Fu
- Key Laboratory of Yak Breeding Engineering of Gansu Province, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou, 730050, China
| | - M Chu
- Key Laboratory of Yak Breeding Engineering of Gansu Province, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou, 730050, China
| | - L Zan
- College of Animal Science and Technology, Northwest A&F University, Yangling, 712100, China
| | - H Wang
- Key Laboratory of Yak Breeding Engineering of Gansu Province, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou, 730050, China
| | - C Liang
- Key Laboratory of Yak Breeding Engineering of Gansu Province, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou, 730050, China
| | - P Yan
- Key Laboratory of Yak Breeding Engineering of Gansu Province, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou, 730050, China
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17
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Miyazaki K, Sekiya T, Fu D, Bowman KW, Kulawik SS, Sudo K, Walker T, Kanaya Y, Takigawa M, Ogochi K, Eskes H, Boersma KF, Thompson AM, Gaubert B, Barre J, Emmons LK. Balance of Emission and Dynamical Controls on Ozone During the Korea-United States Air Quality Campaign From Multiconstituent Satellite Data Assimilation. J Geophys Res Atmos 2019; 124:387-413. [PMID: 31007989 PMCID: PMC6472638 DOI: 10.1029/2018jd028912] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Revised: 10/29/2018] [Accepted: 11/06/2018] [Indexed: 05/05/2023]
Abstract
Global multiconstituent concentration and emission fields obtained from the assimilation of the satellite retrievals of ozone, CO, NO2, HNO3, and SO2 from the Ozone Monitoring Instrument (OMI), Global Ozone Monitoring Experiment 2, Measurements of Pollution in the Troposphere, Microwave Limb Sounder, and Atmospheric Infrared Sounder (AIRS)/OMI are used to understand the processes controlling air pollution during the Korea-United States Air Quality (KORUS-AQ) campaign. Estimated emissions in South Korea were 0.42 Tg N for NO x and 1.1 Tg CO for CO, which were 40% and 83% higher, respectively, than the a priori bottom-up inventories, and increased mean ozone concentration by up to 7.5 ± 1.6 ppbv. The observed boundary layer ozone exceeded 90 ppbv over Seoul under stagnant phases, whereas it was approximately 60 ppbv during dynamical conditions given equivalent emissions. Chemical reanalysis showed that mean ozone concentration was persistently higher over Seoul (75.10 ± 7.6 ppbv) than the broader KORUS-AQ domain (70.5 ± 9.2 ppbv) at 700 hPa. Large bias reductions (>75%) in the free tropospheric OH show that multiple-species assimilation is critical for balanced tropospheric chemistry analysis and emissions. The assimilation performance was dependent on the particular phase. While the evaluation of data assimilation fields shows an improved agreement with aircraft measurements in ozone (to less than 5 ppbv biases), CO, NO2, SO2, PAN, and OH profiles, lower tropospheric ozone analysis error was largest at stagnant conditions, whereas the model errors were mostly removed by data assimilation under dynamic weather conditions. Assimilation of new AIRS/OMI ozone profiles allowed for additional error reductions, especially under dynamic weather conditions. Our results show the important balance of dynamics and emissions both on pollution and the chemical assimilation system performance.
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Affiliation(s)
- K. Miyazaki
- Japan Agency for Marine‐Earth Science and TechnologyYokohamaJapan
| | - T. Sekiya
- Japan Agency for Marine‐Earth Science and TechnologyYokohamaJapan
| | - D. Fu
- Jet Propulsion LaboratoryCalifornia Institute of TechnologyPasadenaCAUSA
| | - K. W. Bowman
- Jet Propulsion LaboratoryCalifornia Institute of TechnologyPasadenaCAUSA
| | - S. S. Kulawik
- Bay Area Environmental Research InstituteSonomaCAUSA
| | - K. Sudo
- Japan Agency for Marine‐Earth Science and TechnologyYokohamaJapan
- Graduate School of Environmental StudiesNagoya UniversityNagoyaJapan
| | - T. Walker
- Department of Civil and Environmental EngineeringCarleton UniversityOttawaOntarioCanada
| | - Y. Kanaya
- Japan Agency for Marine‐Earth Science and TechnologyYokohamaJapan
| | - M. Takigawa
- Japan Agency for Marine‐Earth Science and TechnologyYokohamaJapan
| | - K. Ogochi
- Japan Agency for Marine‐Earth Science and TechnologyYokohamaJapan
| | - H. Eskes
- Royal Netherlands Meteorological Institute (KNMI)De BiltNetherlands
| | - K. F. Boersma
- Royal Netherlands Meteorological Institute (KNMI)De BiltNetherlands
- Meteorological and Air Quality DepartmentWageningen UniversityWageningenNetherlands
| | | | - B. Gaubert
- Atmospheric Chemistry Observations and& Modeling (ACOM) LaboratoryNational Center for Atmospheric ResearchBoulderCOUSA
| | - J. Barre
- European Centre for Medium‐Range Weather ForecastsReadingUK
| | - L. K. Emmons
- Atmospheric Chemistry Observations and& Modeling (ACOM) LaboratoryNational Center for Atmospheric ResearchBoulderCOUSA
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18
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Nicoletti D, Fu D, Mehio O, Moore S, Disa AS, Gu GD, Cavalleri A. Magnetic-Field Tuning of Light-Induced Superconductivity in Striped La_{2-x}Ba_{x}CuO_{4}. Phys Rev Lett 2018; 121:267003. [PMID: 30636150 DOI: 10.1103/physrevlett.121.267003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Indexed: 06/09/2023]
Abstract
Optical excitation of stripe-ordered La_{2-x}Ba_{x}CuO_{4} has been shown to transiently enhance superconducting tunneling between the CuO_{2} planes. This effect was revealed by a blueshift, or by the appearance of a Josephson plasma resonance in the terahertz-frequency optical properties. Here, we show that this photoinduced state can be strengthened by the application of high external magnetic fields oriented along the c axis. For a 7 T field, we observe up to a tenfold enhancement in the transient interlayer phase correlation length, accompanied by a twofold increase in the relaxation time of the photoinduced state. These observations are highly surprising, since static magnetic fields suppress interlayer Josephson tunneling and stabilize stripe order at equilibrium. We interpret our data as an indication that optically enhanced interlayer coupling in La_{2-x}Ba_{x}CuO_{4} does not originate from a simple optical melting of stripes, as previously hypothesized. Rather, we speculate that the photoinduced state may emerge from activated tunneling between optically excited stripes in adjacent planes.
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Affiliation(s)
- D Nicoletti
- Max Planck Institute for the Structure and Dynamics of Matter, 22761 Hamburg, Germany
| | - D Fu
- Max Planck Institute for the Structure and Dynamics of Matter, 22761 Hamburg, Germany
| | - O Mehio
- Max Planck Institute for the Structure and Dynamics of Matter, 22761 Hamburg, Germany
| | - S Moore
- Max Planck Institute for the Structure and Dynamics of Matter, 22761 Hamburg, Germany
| | - A S Disa
- Max Planck Institute for the Structure and Dynamics of Matter, 22761 Hamburg, Germany
| | - G D Gu
- Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - A Cavalleri
- Max Planck Institute for the Structure and Dynamics of Matter, 22761 Hamburg, Germany
- Department of Physics, Clarendon Laboratory, University of Oxford, Oxford OX1 3PU, United Kingdom
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19
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Kang S, Fu D, Le Couteur D, Cogger V. AGE-ASSOCIATED CHANGES IN MOUSE HEPATOCYTE POLARIZATION. Innov Aging 2018. [DOI: 10.1093/geroni/igy023.2066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- S Kang
- The University of Sydney, Concord, New South Wales, Australia
| | - D Fu
- The University of North Carolina,United States
| | | | - V Cogger
- The University of Sydney, Australia
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20
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Pu W, Fu D, Wang Z, Gan X, Lu X, Yang L, Xia H. Realizing Crack Diagnosing and Self-Healing by Electricity with a Dynamic Crosslinked Flexible Polyurethane Composite. Adv Sci (Weinh) 2018; 5:1800101. [PMID: 29876226 PMCID: PMC5978978 DOI: 10.1002/advs.201800101] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Revised: 01/22/2018] [Indexed: 05/14/2023]
Abstract
Combining self-healing functions with damage diagnosing, which can achieve timely healing autonomously, is expected to improve the reliability and reduce life cycle cost of materials. Here, a flexible conductive composite composed of a dynamically crosslinked polyurethane bearing Diels-Alder bonds (PUDA) and carbon nanotubes (CNTs), which possess both crack diagnosing and self-healing functions, is reported. The introduced dynamic Diels-Alder bonds endow the materials self-healing function and the powder-based preparation route based on the specially designed CNTs-coated PUDA micropowders leads to the formation of segregated CNTs network, which makes the composite possess excellent mechanical properties and high conductivity. Because of the sufficient electrothermal and photothermal effect of CNTs, the composites can be healed rapidly and repeatedly by electricity or near-infrared light based on the retro-Diels-Alder reaction. An obvious color difference in the infrared thermograph resulting from the resistance difference between damaged and undamaged area can be observed when applying the voltage, which can be used for crack diagnosing. Using the same electrical circuit, the crack in the PUDA/CNTs composite can be noninvasively detected first and then be autonomously healed. The composites also exhibit a strain-sensing function with good sensitivity and high reliability, thus will have potential applications in electronic strain sensors.
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Affiliation(s)
- Wuli Pu
- State Key Laboratory of Polymer Materials EngineeringPolymer Research InstituteSichuan UniversityChengdu610065China
| | - Daihua Fu
- State Key Laboratory of Polymer Materials EngineeringPolymer Research InstituteSichuan UniversityChengdu610065China
| | - Zhanhua Wang
- State Key Laboratory of Polymer Materials EngineeringPolymer Research InstituteSichuan UniversityChengdu610065China
| | - Xinpeng Gan
- State Key Laboratory of Polymer Materials EngineeringPolymer Research InstituteSichuan UniversityChengdu610065China
| | - Xili Lu
- State Key Laboratory of Polymer Materials EngineeringPolymer Research InstituteSichuan UniversityChengdu610065China
| | - Li Yang
- State Key Laboratory of Polymer Materials EngineeringPolymer Research InstituteSichuan UniversityChengdu610065China
| | - Hesheng Xia
- State Key Laboratory of Polymer Materials EngineeringPolymer Research InstituteSichuan UniversityChengdu610065China
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21
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Zhao W, Xu P, Fu D, Li J, Wang X, Hu J, Zhou J, Yu H, Zhao X, Su L, Chen Z, Zeng Q, Chen J, Fang M, Ma J, Liu T, Song Y, Yu K, Li Y, Qiu L, Chen X, Gu J, Yan J, Hou M, Xiong H. ANTHRACYCLINE DOSE INTENSIFICATION IN DIFFUSE LARGE B-CELL LYMPHOMA. Hematol Oncol 2017. [DOI: 10.1002/hon.2438_48] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- W. Zhao
- State Key Laboratory of Medical Genomics, Shanghai Institute of Hematology, Shanghai Rui Jin Hospital; Shanghai Jiao Tong University School of Medicine; Shanghai China
| | - P. Xu
- State Key Laboratory of Medical Genomics, Shanghai Institute of Hematology, Shanghai Rui Jin Hospital; Shanghai Jiao Tong University School of Medicine; Shanghai China
| | - D. Fu
- State Key Laboratory of Medical Genomics, Shanghai Institute of Hematology, Shanghai Rui Jin Hospital; Shanghai Jiao Tong University School of Medicine; Shanghai China
| | - J. Li
- Department of Hematology; the First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital; Nanjing China
| | - X. Wang
- Department of Hematology; Shandong Provincial Hospital Affiliated to Shandong University; Jinan China
| | - J. Hu
- Fujian Institute of Hematology; Fujian Medical University Union Hospital; Fuzhou China
| | - J. Zhou
- Department of Hematology; Tongji Medical College; Wuhan China
| | - H. Yu
- Department of research and development; Shanghai Righton Biotechnology Co. Ltd; Shanghai China
| | - X. Zhao
- State Key Laboratory of Medical Genomics, Shanghai Institute of Hematology, Shanghai Rui Jin Hospital; Shanghai Jiao Tong University School of Medicine; Shanghai China
| | - L. Su
- Department of Hematology; Shanxi Provincial Cancer Hospital; Taiyuan China
| | - Z. Chen
- Department of Hematology; the First People's Hospital of Foshan; Foshan China
| | - Q. Zeng
- Department of Hematology; the First Affiliated Hospital of Anhui Medical University; Hefei China
| | - J. Chen
- Department of Hematology, Southwestern Hospital; Third Military Medical University; Chongqing China
| | - M. Fang
- Department of Hematology; First Hospital of Dalian Medical University; Dalian China
| | - J. Ma
- Harbin Institute of Hematology and Oncology; Harbin First Hospital; Harbin China
| | - T. Liu
- Department of Hematology, Hematology Research Laboratory, West China Hospital; Sichuan University; Chengdu China
| | - Y. Song
- Department of Hematology; The Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital; Zhengzhou China
| | - K. Yu
- Department of Hematology; The First Affiliated Hospital of Wenzhou Medical University; Wenzhou China
| | - Y. Li
- Department of Hematology; The First Hospital of China Medical University; Shenyang China
| | - L. Qiu
- State Key Laboratory of Experimental Hematology, Institute of Hematology and Blood Disease Hospital; Chinese Academy of Medical Sciences and Peking Union Medical College; Tianjin China
| | - X. Chen
- Department of Hematology, Xijing Hospital; Fourth Military Medical University; Xi'an China
| | - J. Gu
- Institute of Hematology; Clinical Medical College of Yangzhou University, Subei People's Hospital of Jiangsu Province; Yangzhou China
| | - J. Yan
- Department of Hematology; Second Hospital of Dalian Medical University; Dalian China
| | - M. Hou
- Department of Hematology, Qilu Hospital; Shandong University; Jinan China
| | - H. Xiong
- Department of research and development; Shanghai Righton Biotechnology Co. Ltd; Shanghai China
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22
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Abstract
For the first time, electrospraying was employed to fabricate hollow polyurethane microspheres with controlled size and tunable surface morphology.
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Affiliation(s)
- Wuli Pu
- State Key Laboratory of Polymer Materials Engineering
- Polymer Research Institute
- Sichuan University
- Chengdu 610065
- China
| | - Daihua Fu
- State Key Laboratory of Polymer Materials Engineering
- Polymer Research Institute
- Sichuan University
- Chengdu 610065
- China
| | - Hesheng Xia
- State Key Laboratory of Polymer Materials Engineering
- Polymer Research Institute
- Sichuan University
- Chengdu 610065
- China
| | - Zhanhua Wang
- State Key Laboratory of Polymer Materials Engineering
- Polymer Research Institute
- Sichuan University
- Chengdu 610065
- China
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23
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Abstract
OBJECTIVE To evaluate the prevalence of Helicobacter pylori (H. pylori, HP) infection in subjects receiving routine physical examination and its associations with age, sex, body mass index (BMI) and lipid profiles. MATERIALS AND METHODS Clinical information of 22,103 individuals who took routine physical examinations, including that on age, gender, height, weight, triglyceride, total cholesterol, high-density lipoprotein (HDL) cholesterol, low-density lipoprotein (LDL) cholesterol and data of HP infection were collected and analyzed. RESULTS H. pylori infection rate in 22,103 subjects taking routine physical examination was 44.5 %. More men tended to be infected with H. pylori than women (45.9 % vs 42.8 %; p < 0.01). The highest positive rate group was in the age group of 30-39 years (46.8 %) and the lowest rate was in the age group younger than 30 years (40.5 %). The obese had higher infection rate than the non-obese (p < 0.01). Mann-Whitney U test was used to explore the relationships between lipid profiles and H. pylori infection. There were significant associations among HDL, triglyceride and HP infection (p < 0.01). However, significant differences were not confirmed between cholesterol, LDL and H. pylori infection. CONCLUSION H. pylori infection was common among subjects receiving physical examination in Shanghai and it was most significantly associated with HDL and triglyceride, indicating that H. pylori might be a new cardiovascular risk factor (Tab. 3, Ref. 23).
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Fu D, Liu JL, Li MJ, Yang H. [A systematic evaluation of the assessment methods of spasmoidc dysphonia]. Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2016; 30:1254-1260. [PMID: 29798344 DOI: 10.13201/j.issn.1001-1781.2016.15.021] [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] [Subscribe] [Scholar Register] [Received: 12/03/2015] [Indexed: 06/08/2023]
Abstract
To review the available subjective and objective evaluation methods used in the assessment of the spasmodic dysphonia.A systematic literature search was conducted in PubMed,web of science,EBSCO and Ovid database,date limited from 2000 to 2015,language limited English,using the following key words: "spasmodic dysphonia" OR "spastic dysphonia" AND "evaluat*" OR " diagnosis" OR "treatment" OR "assess*".Screening the titles and abstracts,and reading the full text,studies met the inclusion criteria were enrolled.The references of eligible publications were manually searched to identify additional studies.A total of 967 literatures were retrieved.Finally,twenty-three papers were enrolled in the study according to the inclusion criteria.Evaluation methods were mainly divided into subjective and objective,including perception,subjective self-assessment;and aerodynamic,acoustic analysis,respectively.The assessment of spasmodic dysphonia should be multidimensional.
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25
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Marchildon F, Fu D, Lala-Tabbert N, Wiper-Bergeron N. CCAAT/enhancer binding protein beta protects muscle satellite cells from apoptosis after injury and in cancer cachexia. Cell Death Dis 2016; 7:e2109. [PMID: 26913600 PMCID: PMC4849162 DOI: 10.1038/cddis.2016.4] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2015] [Revised: 12/22/2015] [Accepted: 12/27/2015] [Indexed: 12/28/2022]
Abstract
CCAAT/enhancer binding protein beta (C/EBPβ), a transcription factor expressed in muscle satellite cells (SCs), inhibits the myogenic program and is downregulated early in differentiation. In a conditional null model in which C/EBPβ expression is knocked down in paired box protein 7+ (Pax7+) SCs, cardiotoxin (CTX) injury is poorly repaired, although muscle regeneration is efficient in control littermates. While myoblasts lacking C/EBPβ can differentiate efficiently in culture, after CTX injury poor regeneration was attributed to a smaller than normal Pax7+ population, which was not due to a failure of SCs to proliferate. Rather, the percentage of apoptotic SCs was increased in muscle lacking C/EBPβ. Given that an injury induced by BaCl2 is repaired with greater efficiency than controls in the absence of C/EBPβ, we investigated the inflammatory response following BaCl2 and CTX injury and found that the levels of interleukin-1β (IL-1β), a proinflammatory cytokine, were robustly elevated following CTX injury and could induce C/EBPβ expression in myoblasts. High levels of C/EBPβ expression in myoblasts correlated with resistance to apoptotic stimuli, while its loss increased sensitivity to thapsigargin-induced cell death. Using cancer cachexia as a model for chronic inflammation, we found that C/EBPβ expression was increased in SCs and myoblasts of tumor-bearing cachectic animals. Further, in cachectic conditional knockout animals lacking C/EBPβ in Pax7+ cells, the SC compartment was reduced because of increased apoptosis, and regeneration was impaired. Our findings indicate that the stimulation of C/EBPβ expression by IL-1β following muscle injury and in cancer cachexia acts to promote SC survival, and is therefore a protective mechanism for SCs and myoblasts in the face of inflammation.
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Affiliation(s)
- F Marchildon
- Graduate Program in Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
| | - D Fu
- Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
| | - N Lala-Tabbert
- Graduate Program in Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
| | - N Wiper-Bergeron
- Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
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Zhang C, Ma J, Chen G, Fu D, Li L, Li M. Evaluation of common variants in CNR2 gene for bone mineral density and osteoporosis susceptibility in postmenopausal women of Han Chinese. Osteoporos Int 2015; 26:2803-10. [PMID: 26055357 DOI: 10.1007/s00198-015-3195-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2015] [Accepted: 05/28/2015] [Indexed: 12/11/2022]
Abstract
UNLABELLED Postmenopausal osteoporosis is a major health problem with important genetic factors in postmenopausal women. We thoroughly evaluated the relationship of CNR2 polymorphisms with osteoporosis in a cohort of 1032 osteoporosis patients and 2089 healthy controls from Han Chinese postmenopausal women. Statistically significant differences, depending on different genotypes, were presented. INTRODUCTION Osteoporosis is a major health problem in postmenopausal women, which is a multifactorial disease in which genetic determinants are modulated by hormonal, environmental, and nutritional factors. An important clinical risk factor in the pathogenesis of osteoporosis is the presence of genetic polymorphism in susceptibility genes. The aim of our study was to investigate whether CNR2 gene, which attributes to osteoporosis susceptibility in some populations, is associated with bone mineral density (BMD) or osteoporosis in Han Chinese postmenopausal women. METHODS We examine 39 SNPs covering the region of CNR2 gene in 3121 Han Chinese postmenopausal women, consisting of 1032 osteoporosis patients and 2089 healthy controls, to evaluate the association with BMD and osteoporosis. RESULTS We found that rs4237 and rs2501431 were significantly associated with BMD and osteoporosis (corrected p = 0.020085 and 0.017199) in our sample, and the TT genotype of rs2501431 and the AA genotype of rs4237 had lower lumbar spine BMD and femoral neck BMD compared with the other genotypes. Additionally, analyses by haplotypes indicated that two haplotype blocks, containing rs4237 and rs2501431 respectively, in the CNR2 gene significantly associated with BMD and osteoporosis (both global permutation p < 0.001), and a risk haplotype (ATTT) in the block of rs3003336-rs2501431-rs2502992-rs2501432 had almost 4-fold increase in the cases. CONCLUSIONS Our results provide further supportive evidence for an important role of CNR2 gene in the etiology of osteoporosis and suggest that it may be a genetic risk factor for BMD and osteoporosis in Han Chinese postmenopausal women.
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Affiliation(s)
- C Zhang
- The First Department of Orthopedics, the Second Affiliated Hospital, School of Medicine, Xi'an Jiaotong University, 157 Xiwu road, Xi'an, 710061, China
| | - J Ma
- The First Department of Orthopedics, the Second Affiliated Hospital, School of Medicine, Xi'an Jiaotong University, 157 Xiwu road, Xi'an, 710061, China
| | - G Chen
- College of Medicine & Forensics, Xi'an Jiaotong University, 76 West Yanta road, Xi'an, 710061, China
| | - D Fu
- College of Medicine & Forensics, Xi'an Jiaotong University, 76 West Yanta road, Xi'an, 710061, China
| | - L Li
- College of Medicine & Forensics, Xi'an Jiaotong University, 76 West Yanta road, Xi'an, 710061, China
| | - M Li
- Department of Ultrasound, the Second Affiliated Hospital, School of Medicine, Xi'an Jiaotong University, 157 Xiwu road, Xi'an, 710061, China.
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Zhang D, Wang W, Jiang B, Fu D. SU-E-P-54: Evaluation of the Accuracy and Precision of IGPS-O X-Ray Image-Guided Positioning System by Comparison with On-Board Imager Cone-Beam Computed Tomography. Med Phys 2015. [DOI: 10.1118/1.4923988] [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: 11/07/2022] Open
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Xu J, Wang G, Fu D, Su N, Wang L, Gao F, Guo N. High-resolution color doppler ultrasound examination and related risk factor analysis of lower extremity vasculopathy in type 2 diabetes patients. Genet Mol Res 2015; 14:3939-47. [PMID: 25966165 DOI: 10.4238/2015.april.27.8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
This study aims to investigate the value of high-resolution color Doppler ultrasonography (HR-CDU) in the evaluation of lower-extremity vasculopathy (LEV) and its related risk factors in type 2 diabetes mellitus (T2DM) patients. Two hundred forty T2DM patients were selected, who underwent lower-extremity arterial HR-CDU. The patients were divided into the LEV group (V group) and the nonvasculopathy group (A group). The V group was then divided into the mild (B group), moderate (C group), and severe (D group) subgroups. The relevant clinical parameters were simultaneously recorded. The results showed that the lesion-positive detection rate of HR-CDU was significantly higher than that of clinical examination. The age, disease duration, smoking history, blood pressure, blood sugar, fibrinogen (FIB), C-reactive protein (CRP), uric acid (UA), and urinary albumin excretion (UAE) in the V group were higher than in the N group. In the logistic regression analysis, smoking history, age, disease duration, FIB, UA, and fasting blood glucose were independent risk factors of T2DM LEV. The incidence of LEV in T2DM patients increased significantly with increasing age, UA, FIB, CRP, UAE, disease duration, and smoking history, and the vasculopathy level became more severe. In conclusion, age, disease duration, smoking history, blood pressure, blood sugar, FIB, CRP, UA, and UAE are the related risk factors of LEV in T2DM patients.
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Affiliation(s)
- J Xu
- Second Division, Department of Endocrinology, Hebei Cangzhou Central Hospital, Hebei, China
| | - G Wang
- Second Division, Department of Endocrinology, Hebei Cangzhou Central Hospital, Hebei, China
| | - D Fu
- Second Division, Department of Endocrinology, Hebei Cangzhou Central Hospital, Hebei, China
| | - N Su
- Second Division, Department of Endocrinology, Hebei Cangzhou Central Hospital, Hebei, China
| | - L Wang
- Second Division, Department of Endocrinology, Hebei Cangzhou Central Hospital, Hebei, China
| | - F Gao
- Second Division, Department of Endocrinology, Hebei Cangzhou Central Hospital, Hebei, China
| | - N Guo
- Second Division, Department of Endocrinology, Hebei Cangzhou Central Hospital, Hebei, China
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Scherpereel A, Cornelissen R, Di Pietro A, Kindler H, Nackaerts K, Antonia S, Calabrò L, Fu D, Robbins P, Ibrahim R, Maio M. Randomized, Double-Blind, Placebo-Controlled Study of Tremelimumab for Second-Line and Third-Line Treatment of Unresectable Pleural or Peritoneal Mesothelioma. Ann Oncol 2014. [DOI: 10.1093/annonc/mdu342.27] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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An Z, Tang Z, Ma B, Mason AS, Guo Y, Yin J, Gao C, Wei L, Li J, Fu D. Transposon variation by order during allopolyploidisation between Brassica oleracea and Brassica rapa. Plant Biol (Stuttg) 2014; 16:825-35. [PMID: 24176077 DOI: 10.1111/plb.12121] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [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: 02/26/2013] [Accepted: 09/23/2013] [Indexed: 05/02/2023]
Abstract
Although many studies have shown that transposable element (TE) activation is induced by hybridisation and polyploidisation in plants, much less is known on how different types of TE respond to hybridisation, and the impact of TE-associated sequences on gene function. We investigated the frequency and regularity of putative transposon activation for different types of TE, and determined the impact of TE-associated sequence variation on the genome during allopolyploidisation. We designed different types of TE primers and adopted the Inter-Retrotransposon Amplified Polymorphism (IRAP) method to detect variation in TE-associated sequences during the process of allopolyploidisation between Brassica rapa (AA) and Brassica oleracea (CC), and in successive generations of self-pollinated progeny. In addition, fragments with TE insertions were used to perform Blast2GO analysis to characterise the putative functions of the fragments with TE insertions. Ninety-two primers amplifying 548 loci were used to detect variation in sequences associated with four different orders of TE sequences. TEs could be classed in ascending frequency into LTR-REs, TIRs, LINEs, SINEs and unknown TEs. The frequency of novel variation (putative activation) detected for the four orders of TEs was highest from the F1 to F2 generations, and lowest from the F2 to F3 generations. Functional annotation of sequences with TE insertions showed that genes with TE insertions were mainly involved in metabolic processes and binding, and preferentially functioned in organelles. TE variation in our study severely disturbed the genetic compositions of the different generations, resulting in inconsistencies in genetic clustering. Different types of TE showed different patterns of variation during the process of allopolyploidisation.
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Affiliation(s)
- Z An
- Engineering Research Center of South Upland Agriculture of Ministry of Education, College of Agronomy and Biotechnology, Southwest University, Chongqing, China; Crop Research Institute, Gansu Academy of Agricultural Sciences, Lanzhou, China
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Wu Y, Sun H, Song F, Fu D, Wang J. DDIT3 overexpression increases odontoblastic potential of human dental pulp cells. Cell Prolif 2014; 47:249-57. [PMID: 24738922 PMCID: PMC6495274 DOI: 10.1111/cpr.12104] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2013] [Accepted: 01/18/2014] [Indexed: 12/12/2022] Open
Abstract
OBJECTIVES Human dental pulp cells (HDPCs) with multi-potential differentiational capacity can undergo odontoblastic differentiation when stimulated with proinflammatory cytokines. However, factors linking proinflammatory stimuli and their odontoblastic differentiation have, as yet, not been completely understood. As an apoptotic transcription factor, DDIT3 plays a crucial role in the inflammatory reaction and in osteogenic differentiation. Thus, we hypothesized that DDIT3 may participate in odontoblastic differentiation of HDPCs. MATERIALS AND METHODS Immunofluorescent staining was used to detect expression of DDIT3 in HDPCs and effects of TNFα, on its nuclear accumulation. HDPCs that overexpressed DDIT3 were developed and their proliferation and odontoblastic differentiation abilities were examined. qRT-PCR was employed to detect mineralization-related genes, including ALP, runt-related transcription factor-2 (Runx2), osterix (OSX), dentin sialophosphoprotein (DSPP), dentin matrix acidic phosphoprotein 1 (DMP1) and osteocalcin (OCN). Western blot analysis was performed to detect expression of DSPP protein. RESULTS DDIT3 was expressed in HDPCs. TNFα treatment enhanced mRNA expression as well as nuclear accumulation of DDIT3 (slightly). DDIT3 overexpression reduced HDPC proliferation, however, it increased their calcium nodule formation and expression of OSX, DSPP, DMP1 and OCN. CONCLUSIONS DDIT3 may be a factor that links proinflammatory stimuli and differentiation of HDPCs.
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Affiliation(s)
- Y. Wu
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei‐MOST) & Key Laboratory of Oral Biomedicine Ministry of EducationSchool & Hospital of StomatologyWuhan UniversityWuhanHubei430079China
| | - H. Sun
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei‐MOST) & Key Laboratory of Oral Biomedicine Ministry of EducationSchool & Hospital of StomatologyWuhan UniversityWuhanHubei430079China
| | - F. Song
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei‐MOST) & Key Laboratory of Oral Biomedicine Ministry of EducationSchool & Hospital of StomatologyWuhan UniversityWuhanHubei430079China
| | - D. Fu
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei‐MOST) & Key Laboratory of Oral Biomedicine Ministry of EducationSchool & Hospital of StomatologyWuhan UniversityWuhanHubei430079China
| | - J. Wang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei‐MOST) & Key Laboratory of Oral Biomedicine Ministry of EducationSchool & Hospital of StomatologyWuhan UniversityWuhanHubei430079China
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Lee B, Chen Y, Fu D, Yi HT, Czelen K, Najafov H, Podzorov V. Trap healing and ultralow-noise Hall effect at the surface of organic semiconductors. Nat Mater 2013; 12:1125-1129. [PMID: 24162882 DOI: 10.1038/nmat3781] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2013] [Accepted: 09/17/2013] [Indexed: 06/02/2023]
Abstract
Fundamental studies of intrinsic charge transport properties of organic semiconductors are often hindered by charge traps associated with static disorder present even in optimized single-crystal devices. Here, we report a method of surface functionalization using an inert non-conjugated polymer, perfluoropolyether (PFPE), deposited at the surface of organic molecular crystals, which results in accumulation of mobile holes and a 'trap healing' effect at the crystal/PFPE interface. As a consequence, a remarkable ultralow-noise, trp-free conduction regime characterized by intrinsic mobility and transport anisotropy emerges in organic single crystals, and Hall effect measurements with an unprecedented signal-to-noise ratio are demonstrated. This general method to convert trap-dominated organic semiconductors to intrinsic systems may enable the determination of intrinsic transport parameters with high accuracy and make Hall effect measurements in molecular crystals ubiquitous.
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Affiliation(s)
- B Lee
- 1] Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854, USA [2]
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Du M, Wu M, Fu D, Yang S, Chen J, Wilson K, Lyons TJ. Effects of modified LDL and HDL on retinal pigment epithelial cells: a role in diabetic retinopathy? Diabetologia 2013; 56:2318-28. [PMID: 23842729 PMCID: PMC4557884 DOI: 10.1007/s00125-013-2986-x] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/19/2013] [Accepted: 06/17/2013] [Indexed: 10/26/2022]
Abstract
AIMS/HYPOTHESIS Blood-retina barrier leakage in diabetes results in extravasation of plasma lipoproteins. Intra-retinal modified LDLs have been implicated in diabetic retinopathy (DR), but their effects on retinal pigment epithelial (RPE) cells and the added effects of extravasated modified HDLs are unknown. METHODS In human retinas from individuals with and without diabetes and DR, immunohistochemistry was used to detect ApoB, ApoA1 and endoplasmic reticulum (ER) stress markers. In cell culture, human RPE cells were treated with native LDL (N-LDL) or heavily-oxidised glycated LDL (HOG-LDL) with or without pretreatment with native HDL (N-HDL) or heavily-oxidised glycated HDL (HOG-HDL). Cell viability, oxidative stress, ER stress, apoptosis and autophagy were assessed by Cell Counting Kit-8 assay, dichlorofluorescein assay, western blotting, immunofluorescence and TUNEL assay. In separate experiments, RPE cells were treated with lipid oxidation products, 7-ketocholesterol (7-KC, 5-40 μmol/l) or 4-hydroxynonenal (4-HNE, 5-80 μmol/l), with or without pretreatment with N-HDL or HOG-HDL. RESULTS ApoB, ApoA1 staining and RPE ER stress were increased in the presence of DR. HOG-LDL but not N-LDL significantly decreased RPE cell viability and increased reactive oxygen species generation, ER stress, apoptosis and autophagy. Similarly, 4-HNE and 7-KC decreased viability and induced ER stress. Pretreatment with N-HDL mitigated these effects, whereas HOG-HDL was less effective by most, but not all, measures. CONCLUSIONS/INTERPRETATION In DR, extravascular modified LDL may promote RPE injury through oxidative stress, ER stress, autophagy and apoptosis. N-HDL has protective effects, but HOG-HDL is less effective. Extravasation and modification of HDL may modulate the injurious effects of extravasated modified LDL on the retinal pigment epithelium.
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Affiliation(s)
- M. Du
- Harold Hamm Diabetes Center and Section of Endocrinology and Diabetes, University of Oklahoma Health Sciences Center, HHDC Suite 2900, Oklahoma City, OK 73104, USA
- Department of Physiology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
| | - M. Wu
- Harold Hamm Diabetes Center and Section of Endocrinology and Diabetes, University of Oklahoma Health Sciences Center, HHDC Suite 2900, Oklahoma City, OK 73104, USA
| | - D. Fu
- Harold Hamm Diabetes Center and Section of Endocrinology and Diabetes, University of Oklahoma Health Sciences Center, HHDC Suite 2900, Oklahoma City, OK 73104, USA
- Department of Immunology, Harbin Medical University, Harbin, People’s Republic of China
| | - S. Yang
- Harold Hamm Diabetes Center and Section of Endocrinology and Diabetes, University of Oklahoma Health Sciences Center, HHDC Suite 2900, Oklahoma City, OK 73104, USA
| | - J. Chen
- Harold Hamm Diabetes Center and Section of Endocrinology and Diabetes, University of Oklahoma Health Sciences Center, HHDC Suite 2900, Oklahoma City, OK 73104, USA
| | - K. Wilson
- Harold Hamm Diabetes Center and Section of Endocrinology and Diabetes, University of Oklahoma Health Sciences Center, HHDC Suite 2900, Oklahoma City, OK 73104, USA
| | - T. J. Lyons
- Harold Hamm Diabetes Center and Section of Endocrinology and Diabetes, University of Oklahoma Health Sciences Center, HHDC Suite 2900, Oklahoma City, OK 73104, USA
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Fu D, Wu M, Zhang J, Du M, Yang S, Hammad SM, Wilson K, Chen J, Lyons TJ. Mechanisms of modified LDL-induced pericyte loss and retinal injury in diabetic retinopathy. Diabetologia 2012; 55:3128-40. [PMID: 22935961 PMCID: PMC5922447 DOI: 10.1007/s00125-012-2692-0] [Citation(s) in RCA: 82] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/28/2011] [Accepted: 07/23/2012] [Indexed: 12/31/2022]
Abstract
AIMS/HYPOTHESIS In previous studies we have shown that extravasated, modified LDL is associated with pericyte loss, an early feature of diabetic retinopathy (DR). Here we sought to determine detailed mechanisms of this LDL-induced pericyte loss. METHODS Human retinal capillary pericytes (HRCP) were exposed to 'highly-oxidised glycated' LDL (HOG-LDL) (a model of extravasated and modified LDL) and to 4-hydroxynonenal or 7-ketocholesterol (components of oxidised LDL), or to native LDL for 1 to 24 h with or without 1 h of pretreatment with inhibitors of the following: (1) the scavenger receptor (polyinosinic acid); (2) oxidative stress (N-acetyl cysteine); (3) endoplasmic reticulum (ER) stress (4-phenyl butyric acid); and (4) mitochondrial dysfunction (cyclosporin A). Oxidative stress, ER stress, mitochondrial dysfunction, apoptosis and autophagy were assessed using techniques including western blotting, immunofluorescence, RT-PCR, flow cytometry and TUNEL assay. To assess the relevance of the results in vivo, immunohistochemistry was used to detect the ER stress chaperon, 78 kDa glucose-regulated protein, and the ER sensor, activating transcription factor 6, in retinas from a mouse model of DR that mimics exposure of the retina to elevated glucose and elevated LDL levels, and in retinas from human participants with and without diabetes and DR. RESULTS Compared with native LDL, HOG-LDL activated oxidative and ER stress in HRCP, resulting in mitochondrial dysfunction, apoptosis and autophagy. In a mouse model of diabetes and hyperlipidaemia (vs mouse models of either condition alone), retinal ER stress was enhanced. ER stress was also enhanced in diabetic human retina and correlated with the severity of DR. CONCLUSIONS/INTERPRETATION Cell culture, animal, and human data suggest that oxidative stress and ER stress are induced by modified LDL, and are implicated in pericyte loss in DR.
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Affiliation(s)
- D Fu
- Harold Hamm Diabetes Center and Section of Endocrinology, University of Oklahoma Health Sciences Center, 1000 N Lincoln Blvd, Suite 2900, Oklahoma City, OK 73104, USA
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Hale I, Zhang X, Fu D, Dubcovsky J. Registration of wheat lines carrying the partial stripe rust resistance gene Yr36 without the Gpc-B1 high grain protein content allele. J Plant Regist 2012; 7:108-112. [PMID: 26962384 PMCID: PMC4780365 DOI: 10.3198/jpr2012.03.0150crg] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
While the high-temperature adult plant resistance gene Yr36 represents a promising source of quantitative and potentially race non-specific resistance to wheat stripe rust (causal organism Puccinia striiformis Westend. f. sp. tritici), its tight linkage (0.3 cM) with the high-grain protein content gene Gpc-B1 may hinder its introgression in certain cases, such as in soft wheat varieties requiring low grain protein content or in lines where the Gpc-B1 allele may be associated with a yield penalty. The development and registration of two donor lines, one tetraploid (Triticum turgidum L. ssp. durum; PI 656793) and one hexaploid (T. aestivum L. ssp. aestivum; PI 664549), each carrying the resistant wild emmer (T. turgidum ssp. dicoccoides) allele for Yr36 linked with the non-functional Gpc-B1 allele, are intended to overcome this potential limitation. Meiotic recombination events breaking the linkage between these two genes were discovered during the systematic screening of a population of 4,500 F2 durum plants (cv. Langdon background) used to fine map Yr36. One of the critical recombination events was selected for fixation by self-pollination and transferred to a California adapted spring hexaploid background (breeding line UC11105+10) through five generations of backcrossing. Genotypic and phenotypic data confirm the presence of Yr36 and the non-functional Gpc-B1 allele in both registered lines.
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Affiliation(s)
- I Hale
- Department of Plant Sciences, University of California - Davis, Davis, CA 95616
| | - X Zhang
- Department of Plant Sciences, University of California - Davis, Davis, CA 95616
| | - D Fu
- Department of Agronomy, Shandong Agricultural University, Tai'an, Shandong, China, 271018
| | - J Dubcovsky
- Department of Plant Sciences, University of California - Davis, Davis, CA 95616; Howard Hughes Medical Institute and Gordon & Betty Moore Foundation
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Fu D, Xiao C, Chai Y. e0022 Losartan attenuated cardiomyocyte apoptosis by increasing Akt activity in aortic banded rats with chronic heart failure. Heart 2010. [DOI: 10.1136/hrt.2010.208967.22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Fu D, Zhang H, Wang H, Wang B, Kuduvalli G, Maurer CR. TH-C-303A-02: Clinical Data Evaluation of Fiducial-Free Spine Tracking for CyberKnife Radiosurgery. Med Phys 2009. [DOI: 10.1118/1.3182626] [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: 11/07/2022] Open
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Hobbs R, Fu D, Pomper M, Ambinder R, Sgouros G. Bortezomib-induced enzyme-targeted radiotherapy (BETR) for AIDS-related malignancies: efficacy assessment by Monte Carlo and dosimetry modeling. Infect Agent Cancer 2009. [PMCID: PMC4261784 DOI: 10.1186/1750-9378-4-s2-p23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Dufresne AL, Fu D, Ambinder RF. Burkitt's lymphoma: differential killing of Epstein-Barr virus (EBV) (+) and EBV(-) Burkitt lymphoma cells in vitro and dose-dependent lytic induction by bortezomib in vivo. Infect Agent Cancer 2009. [PMCID: PMC4261768 DOI: 10.1186/1750-9378-4-s2-p16] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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Fu D, Kahn R, Wang B, Wang H, Mu Z, Kuduvalli G, Maurer C. Fiducial-free Lung Tumor Tracking for CyberKnife Radiosurgery. Int J Radiat Oncol Biol Phys 2008. [DOI: 10.1016/j.ijrobp.2008.06.235] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Wang F, Shen X, Xu S, Liu Y, Ma L, Zhao Q, Fu D, Pan Q, Feng S, Li X. Negative words on surgical wards result in therapeutic failure of patient-controlled analgesia and further release of cortisol after abdominal surgeries. Minerva Anestesiol 2008; 74:353-365. [PMID: 18612266] [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: 05/26/2023]
Abstract
BACKGROUND The perception of pain is germane to the environmental stimuli. Nurses on surgical wards are the main contributor in influencing patients' psychophysiological fettle. The aim of the study was to investigate the effect of different words, negative or positive, from nurses on postoperative pain therapy with patient-controlled analgesia (PCA). METHODS 1500 ASA I-II patients, who underwent abdominal hysterectomy, were screened and 771 were randomized into one of four groups. In the no words group (NW, N.=35), no words was delivered. The positive (PW, N.=248), partially negative (NW1, N.=241) and totally negative (NW2, N.=247) groups received corresponding words when treating with morphine PCA, the words were given singly at the 3(rd), 6(th), 12(th), 18(th) h and repeatedly at the 3(rd) and 6(th) h, and each group was redivided into six subgroups according to varying time points. Pain intensity, morphine consumption, side effects, overall sedation and satisfaction scores were recorded and plasma cortisol was tested. RESULTS A total of 614 patients completed the study. Negative words expressed significant influence on pain therapy at the 3(rd) and 6(th) h after surgeries (P<0.01), and this effect was more convenient in repeatedly treated patients (P<0.001). Positive and the 12(th) and 18(th) h negative words displayed little role in pain management. Morphine consumption, side effects, satisfaction and cortisol level converted with the change of the pain intensity. No intergroup differences were observed in patients' overall conditions. CONCLUSION Negative words on surgical wards influenced postoperative pain management at the earlier period of time after abdominal surgeries associated with the HPA axis activation.
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Affiliation(s)
- F Wang
- Department of Anesthesiology, Affiliated Nanjing Maternity and Child Health Care Hospital, Nanjing Medical University, Nanjing 210004, China.
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Stepanski EJ, Schwartzberg LS, Blakely LJ, Fu D, Fortner BV. Prevalence of insomnia and associated symptoms in patients with cancer. J Clin Oncol 2007. [DOI: 10.1200/jco.2007.25.18_suppl.9098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
9098 Background: High rates of insomnia have been reported in patients undergoing treatment for cancer. The etiology of insomnia in these patients is unknown, but may be related to psychological factors (anxiety or depression), pain, treatment-related toxicity, or other co-morbid medical conditions. Insomnia has been linked with increased rates of depression, decreased quality of life, and increased fatigue in other patient populations, and is therefore important to understand in the context of cancer. Methods: The Patient Care Monitor (PCM; Supportive Oncology Services, Memphis, TN) is a validated software package assessing oncology-related patient symptoms using a 11- point Likert scale. This instrument is administered routinely to patients at each office visit at most community oncology clinics within the Accelerated Community Oncology Research Network (ACORN). Cross-sectional patient-reported data from 11,445 consecutive patients evaluated at ACORN sites are presented here. Results: The mean age of the sample was 61.5 (±14.2; range 18–95), and 74.3% was female. 25% had received chemotherapy within the prior month. The sample size by tumor site was as follows: breast- 3,316; GU- 2,966; GI- 1,634; hematologic- 1,373; lung- 1,224; head and neck- 501; skin- 321. 55% of the pts reported trouble sleeping, with 26% describing this trouble as moderate or severe. Mean values from patient reported symptoms on the PCM are reported below. 21.9% of patients without insomnia had recent chemotherapy, compared with 27.5% of patients with insomnia who had recent therapy (p<.001). Conclusions: Insomnia occurs commonly in patients with cancer, and is associated with significantly increased fatigue, pain, and depressed mood. Additional research will explore changes in insomnia over the course of treatment, and relate these to possible etiological factors. [Table: see text] No significant financial relationships to disclose.
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Affiliation(s)
- E. J. Stepanski
- Accelerated Community Oncology Research Network, Memphis, TN
| | | | - L. J. Blakely
- Accelerated Community Oncology Research Network, Memphis, TN
| | - D. Fu
- Accelerated Community Oncology Research Network, Memphis, TN
| | - B. V. Fortner
- Accelerated Community Oncology Research Network, Memphis, TN
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Fu D, Chong J, Foss C, Fox J, Wang S, Green G, Chen J, Lemas MV, Pomper M, Ambinder R. Imaging and therapy for Epstein-Barr virus-associated gastric cancer. J Clin Oncol 2007. [DOI: 10.1200/jco.2007.25.18_suppl.4644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
4644 Background: Epstein-Barr virus (EBV) has been identified in a wide variety of malignancies, including gastric carcinomas. The virus encodes kinases that phosphorylate nucleoside analogs such as 2’-deoxy-2’-fluoro-5-iodo-1-beta-D- arabinofuranosyluracil (FIAU). We hypothesized that it might be possible to use the viral enzyme to specifically concentrate [125I]FIAU or [131I] FIAU in tumor cells harboring virus and thus deliver imaging and therapeutic radiation. Bortezomib is a potent stimulator of viral kinase expression in EBV tumor cell lines. Methods: We imaged lytic induction in vivo and evaluated the effect of [131I] FIAU on human cancer xenografts in SCID mice. These include a tumor line engineered to constitutively express the EBV thymide kinase (EBVTK), and a control engineered with a sham vector (SHAM), as well one EBV-associated human gastric tumor (KT tumor). Mice were treated with buffer, bortezomib (2μg/g), or radiolabeled FIAU or radiolabeled FIAU and bortezomib in combination. For imaging, mice, [125I]-FIAU and SPECT/CT were used. For therapy, 131I-FIAU was used and tumor dimensions were monitored with calipers. Results: SPECT/CT imaging with [125I]-FIAU of tumor-bearing SCID mice showed selective concentration of radiotracer in tumor tissue in EBVTK (3/3) and in EBV-associated KT tumors (3/3) when animals were pretreated with bortezomib. Treatment with buffer had no effect on 3 EBVTK tumors and 3 SHAM tumors all of which increased in volume. Treatment with 1.6 mCi of [131I]-FIAU alone led to tumor response in 3/3 mice with EBVTK tumors and 0/3 mice with SHAM tumors. Treatment with [131I]-FIAU alone had no effect on EBV KT tumor xenografts (0/3) and all tumors increased in volume. Treatment with bortezomib induced modest responses in all KT tumors. However, treatment with bortezomib and [131I]-FIAU led to marked tumor regression (>80%) in EBV-associated KT tumors (3/3). Conclusions: Treatment with bortezomib leads to selective concentration of radiolabeled FIAU in the EBV-associated tumor xenografts. In combination with [131I]-FIAU it leads to tumor regression. No significant financial relationships to disclose.
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Affiliation(s)
- D. Fu
- Johns Hopkins University, Baltimore, MD; Tokyo Metropolitan Toshima Hospital, Tokyo, Japan
| | - J. Chong
- Johns Hopkins University, Baltimore, MD; Tokyo Metropolitan Toshima Hospital, Tokyo, Japan
| | - C. Foss
- Johns Hopkins University, Baltimore, MD; Tokyo Metropolitan Toshima Hospital, Tokyo, Japan
| | - J. Fox
- Johns Hopkins University, Baltimore, MD; Tokyo Metropolitan Toshima Hospital, Tokyo, Japan
| | - S. Wang
- Johns Hopkins University, Baltimore, MD; Tokyo Metropolitan Toshima Hospital, Tokyo, Japan
| | - G. Green
- Johns Hopkins University, Baltimore, MD; Tokyo Metropolitan Toshima Hospital, Tokyo, Japan
| | - J. Chen
- Johns Hopkins University, Baltimore, MD; Tokyo Metropolitan Toshima Hospital, Tokyo, Japan
| | - M. V. Lemas
- Johns Hopkins University, Baltimore, MD; Tokyo Metropolitan Toshima Hospital, Tokyo, Japan
| | - M. Pomper
- Johns Hopkins University, Baltimore, MD; Tokyo Metropolitan Toshima Hospital, Tokyo, Japan
| | - R. Ambinder
- Johns Hopkins University, Baltimore, MD; Tokyo Metropolitan Toshima Hospital, Tokyo, Japan
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Blakely L, Schwartzberg LS, Henry D, Sabbath K, Fu D, Epperson A, Fortner BV. Randomized study of early intervention compared to standard intervention with darbepoetin-alpha (DA) for chemotherapy-induced anemia (CIA) in early stage breast cancer (ESBC). J Clin Oncol 2007. [DOI: 10.1200/jco.2007.25.18_suppl.19538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
19538 Background: Dose dense chemotherapy (DDC) with sequential doxorubicin/ cyclophosphamide followed by paclitaxel Q 14 days has an established place in the treatment of ESBC. However, moderate/severe CIA is a common consequence and therapeutic intervention is frequent. We sought to determine if early intervention at the onset of anemia with DA could reduce the emergence of more severe anemia during therapy and maintain quality of life compared to later intervention. Material and Methods: Non-iron deficient (ferritin > 50) patients (pts) with hemoglobin (Hb) levels >11.0 g/dl scheduled to receive adjuvant or neoadjuvant DDC for ESBC were recruited. Pts were randomly assigned prior to chemotherapy to initiate treatment with DA 200 μg q2w SQ when Hb < 11.5 g/dl (early intervention, EARLY), or DA 200 μg q2w SQ when Hb < 10.0 g/dl (standard intervention, STD) with end of treatment defined as 14 days after the last cycle of chemotherapy. Dose escalation for inadequate response of < 1 g/dl after 6 weeks of DA and dose withholding/reduction for Hb >13 g/dl were pre-specified. Results: The complete sample of 149 pts have been accrued (median age of 53.1, range 28.7 - 74.5). Analysis of fatigue ratings show a trend towards lower fatigue scores in EARLY at Hb nadir, and at end of study,(ANOVA, Group x Time interaction, p=.07). Discussion: Early intervention with DA significantly reduces the risk of developing moderate/severe CIA and increases time spent in the target range during DDC for ESBC. [Table: see text] No significant financial relationships to disclose.
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Affiliation(s)
- L. Blakely
- Accelerated Community Oncology Research Network, Memphis, TN
| | | | - D. Henry
- Accelerated Community Oncology Research Network, Memphis, TN
| | - K. Sabbath
- Accelerated Community Oncology Research Network, Memphis, TN
| | - D. Fu
- Accelerated Community Oncology Research Network, Memphis, TN
| | - A. Epperson
- Accelerated Community Oncology Research Network, Memphis, TN
| | - B. V. Fortner
- Accelerated Community Oncology Research Network, Memphis, TN
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Somer BG, Schwartzberg LS, Arena F, Epperson A, Fu D, Fortner BV. Phase II trial of nab-paclitaxel (nanoparticle albumin-bound paclitaxel (ABX)) + capecitabine (XEL) in first-line treatment of metastatic breast cancer (MBC). J Clin Oncol 2007. [DOI: 10.1200/jco.2007.25.18_suppl.1053] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
1053 Background: ABX and XEL both have substantial single agent activity in MBC. Taxane and anti-metabolite doublets improve response rate and TTP and longer survival. ABX administered weekly has an excellent safety and efficacy profile with maintenance of dose intensity. This study was designed to test the safety and efficacy of ABX + XEL given in a novel combination schedule. Methods: This phase II, multicenter open label study utilized ABX 125 mg/m2 IV on day 1, 8 and with no premeds and capecitabine 825 mg/m2 PO BID days 1–14 on a Q 3 week cycle. The primary endpoint is objective response rate, with evaluation performed after every 2 cycles. Entry criteria include measurable MBC by RECIST criteria, age >18, PS 0–2, no prior chemo for metastatic disease, > 6 months since adjuvant fluoropyrimidine and/or paclitaxel. Results: The full sample of 50 patients (pts) have been enrolled; data from 43 pts are available for analysis. Median age is 58 (range 23.7–90.6). 37% received prior adjuvant anthracycline and 33% prior adjuvant taxane. Median number of metastatic sites is 2 (range 1–7), with most common sites of disease liver, 53.5%; bone, 51.2%; and lung, 14%. 226 cycles of therapy have been delivered. 5 pts required a dose reduction in XEL (3 pts to 650 mg/m2; 2 to 550 mg/m2) and 4 pts had dose reduction in ABX to 100 mg/m2. XEL dose reductions occurred due to hand-foot syndrome (3), neutropenia (1), and fatigue (1). ABX dose reductions occurred due to mucositis, diarrhea, fatigue, and neuropathy (1 pt each). 10 pts had grade 3–4 non-hematologic AEs: 3 hand-foot syndrome, 4 fatigue, and 3 GI. Hematologic AEs included 4 with grade 3 and 1 with grade 4 neutropenia, and 2 with grade 4 febrile neutropenia. The most common AEs of any grade were GI (30), dermatological (23), fatigue (15), neuropathy (12), and hand-foot syndrome (11). The incidence of Grade 1–2 neuropathy was 25% (no grade 3–4). Of 38 pts available for analysis of response, the overall response rate is 47.5%: PR 39.5%, CR 8%. Total of 15 pts have stable disease, 20 pts have completed 6+ cycles. No significant financial relationships to disclose.
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Affiliation(s)
- B. G. Somer
- Accelerated Community Oncology Research Network, Memphis, TN
| | | | - F. Arena
- Accelerated Community Oncology Research Network, Memphis, TN
| | - A. Epperson
- Accelerated Community Oncology Research Network, Memphis, TN
| | - D. Fu
- Accelerated Community Oncology Research Network, Memphis, TN
| | - B. V. Fortner
- Accelerated Community Oncology Research Network, Memphis, TN
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Yan L, Fu D, Li C, Blechl A, Tranquilli G, Bonafede M, Sanchez A, Valarik M, Yasuda S, Dubcovsky J. The wheat and barley vernalization gene VRN3 is an orthologue of FT. Proc Natl Acad Sci U S A 2006; 103:19581-6. [PMID: 17158798 PMCID: PMC1748268 DOI: 10.1073/pnas.0607142103] [Citation(s) in RCA: 582] [Impact Index Per Article: 32.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Winter wheat and barley varieties require an extended exposure to low temperatures to accelerate flowering (vernalization), whereas spring varieties do not have this requirement. In this study, we show that in these species, the vernalization gene VRN3 is linked completely to a gene similar to Arabidopsis FLOWERING LOCUS T (FT). FT induction in the leaves results in a transmissible signal that promotes flowering. Transcript levels of the barley and wheat orthologues, designated as HvFT and TaFT, respectively, are significantly higher in plants homozygous for the dominant Vrn3 alleles (early flowering) than in plants homozygous for the recessive vrn3 alleles (late flowering). In wheat, the dominant Vrn3 allele is associated with the insertion of a retroelement in the TaFT promoter, whereas in barley, mutations in the HvFT first intron differentiate plants with dominant and recessive VRN3 alleles. Winter wheat plants transformed with the TaFT allele carrying the promoter retroelement insertion flowered significantly earlier than nontransgenic plants, supporting the identity between TaFT and VRN-B3. Statistical analyses of flowering times confirmed the presence of significant interactions between vernalization and FT allelic classes in both wheat and barley (P < 0.0001). These interactions were supported further by the observed up-regulation of HvFT transcript levels by vernalization in barley winter plants (P = 0.002). These results confirmed that the wheat and barley FT genes are responsible for natural allelic variation in vernalization requirement, providing additional sources of adaptive diversity to these economically important crops.
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Affiliation(s)
- L. Yan
- *Department of Plant Sciences, University of California, Davis, CA 95616
| | - D. Fu
- *Department of Plant Sciences, University of California, Davis, CA 95616
| | - C. Li
- *Department of Plant Sciences, University of California, Davis, CA 95616
| | - A. Blechl
- U.S. Department of Agriculture–Agricultural Research Service, Western Regional Research Center, Albany, CA 94710; and
| | - G. Tranquilli
- *Department of Plant Sciences, University of California, Davis, CA 95616
| | - M. Bonafede
- *Department of Plant Sciences, University of California, Davis, CA 95616
| | - A. Sanchez
- *Department of Plant Sciences, University of California, Davis, CA 95616
| | - M. Valarik
- *Department of Plant Sciences, University of California, Davis, CA 95616
| | - S. Yasuda
- Research Institute for Bioresources, Okayama University, Kurashiki 710-0046, Japan
| | - J. Dubcovsky
- *Department of Plant Sciences, University of California, Davis, CA 95616
- To whom correspondence should be addressed. E-mail:
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Fu D, Lemas V, Foss C, Fox J, Pomper M, Ambinder RF. Enzymatically-targeted 131I therapy for herpesvirus-associated malignancies. J Clin Oncol 2006. [DOI: 10.1200/jco.2006.24.18_suppl.3010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
3010 Background: Epstein-Barr virus (EBV) and Kaposi’s sarcoma herpesvirus (KSHV) are associated with tumors including AIDS-related lymphoma, Burkitt’s lymphoma, Hodgkin’s lymphoma, nasopharyngeal carcinoma and Kaposi’s sarcoma. Both viruses encode kinases that selectively phosphorylate nucleoside analogs such as ganciclovir and FIAU. We hypothesized that it might be possible to use the viral enzymes to specifically concentrate 131I-FIAU in tumor cells harboring virus and thus deliver therapeutic radiation. Bortezomib is a potent stimulator of viral kinase expression in gammaherpesvirus tumor cell lines. Methods: We evaluated the effect of 131I-FIAU on human cancer xenografts in SCID mice. These included a tumor line engineered to constitutively express the EBV thymidine kinase (EBVTK), and a control engineered with a sham vector (SHAM), as well 2 EBV(+) Burkitt’s lymphoma (BL) lines, and 1 KSHV(+) primary effusion lymphoma (PEL) cell line. Mice were treated with buffer, bortezomib 2 ug/gm, or I-FIAU, or I-FIAU and bortezomib in combination. For imaging, mice, 125I -FIAU and SPECT were used. For therapy, 131I-FIAU was used and tumor dimensions were monitored with calipers. Results: Treatment with buffer had no effect on on 3 EBVTK tumors and 3 SHAM tumors all of which increased in volume. Treatment with 1.4 mCi 131I-FIAU alone led to tumor responses (>90% volume reduction at 10 days) in 3/3 mice with EBVTK tumors and 0/3 mice with SHAM tumors. Treatment with 131I-FIAU alone had no effect on BL (0/3) or PEL (0/9) xenografts and all tumors increased in volume. Treatment with bortezomib induced modest responses in all tumors but had no greater effect on EBVTK tumors than SHAM tumors. However, treatment with bortezomib and 131I-FIAU led to marked tumor regression (>95%) in each of the virus-associated tumors (3/3 BL, 9/9 PEL). SPECT imaging with 125I-FIAU showed selective concentration of radiolabel in tumor tissue in the EBVTK tumor (2/2) and in viral tumors (6/6) when bortezomib was administered. There was no selective concentration in the absence of bortezomib treatment in the viral tumors (0/8). Conclusions: Treatment with bortezomib leads to selective concentration of labeled FIAU in the herpesvirus-associated tumor xenografts evaluated and to regression of tumor when the isotope is 131I. No significant financial relationships to disclose.
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Affiliation(s)
- D. Fu
- Johns Hopkins School of Medicine, Baltimore, MD
| | - V. Lemas
- Johns Hopkins School of Medicine, Baltimore, MD
| | - C. Foss
- Johns Hopkins School of Medicine, Baltimore, MD
| | - J. Fox
- Johns Hopkins School of Medicine, Baltimore, MD
| | - M. Pomper
- Johns Hopkins School of Medicine, Baltimore, MD
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