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Sun G, Wang S, Song Y, Jin J, Liu Y, Ren H, Fang H, Zhao X, Song Y, Yu Z, Liu X, Li Y. Radiation-Induced Lymphopenia is Associated with Radiation Fractionation and Predicts Poorer Prognosis in Patients with Breast Cancer. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.2369] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Zhang J, Wang S, Li T, Liu Z, Chen S, Qin S, Tang Y, Song Y, Jin J, Liu W, Wang J, Jing H, Zhao X, Sun G, LI Y. Assessment of Voluntary Deep Inspiration Breath-holding Technique Using Optical Surface Monitoring System for Breast Radiotherapy: A Prospective Phase 2 Study of 20 Cases. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.2372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Wang F, He J, Cheng H, Ma Y, Liu S, Yang L, Sun G, Hao S, Yu J, Cheng T. RNA EDITOME ANALYSIS OF HEMATOPOIETIC CELLS REVEALS ANTIZYME INHIBITOR 1 AS A FUNCTIONAL REGULATOR IN HEMATOPOIETIC STEM AND PROGENITOR CELLS. Exp Hematol 2019. [DOI: 10.1016/j.exphem.2019.06.455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Ma S, Sun G, Yang S, Ju Z, Cheng T, Cheng H. Effects of telomere length on leukemogenesis. SCIENCE CHINA-LIFE SCIENCES 2019; 63:308-311. [PMID: 31290100 DOI: 10.1007/s11427-019-9588-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Accepted: 06/12/2019] [Indexed: 11/28/2022]
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Sun G, Gao P, Jia J, Zhang L. Efficacy and safety of apatinib for metastatic colorectal cancer in standard therapy failure. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz155.134] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Mattson J, Emerson J, Kulkarni A, Underwood A, Sun G, Mott S, Robison K, Hill E. Evaluation of superficial versus deep inguinal lymph node dissection in squamous cell carcinoma of the vulva. Gynecol Oncol 2019. [DOI: 10.1016/j.ygyno.2019.04.507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Tang X, Cai W, Cheng J, Lu P, Ma S, Chen C, Chen Y, Sun Y, Wang C, Hu P, Lv X, Sun G, Wang Y, Sheng J. The histone H3 lysine-27 demethylase UTX plays a critical role in colorectal cancer cell proliferation. Cancer Cell Int 2019; 19:144. [PMID: 31139021 PMCID: PMC6530047 DOI: 10.1186/s12935-019-0841-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Accepted: 04/27/2019] [Indexed: 11/10/2022] Open
Abstract
Background Ubiquitously transcribed tetratricopeptide repeat, X chromosome (UTX) is an H3K27me3 demethylase, a permissive mark associated with active gene transcription. UTX has been linked to various human cancers. Colorectal cancer (CRC) ranks 3rd among the most common cancers worldwide. However, the role of UTX in colorectal cancer has rarely been reported. Methods RT-qPCR, immunoblotting assays (WB), and immunohistochemistry staining were conducted to explore the UTX expression levels in CRC tissues and surrounding normal tissues. CCK-8 assays, colony formation assays, and flow cytometry were also used to determine the potential role of UTX in CRC cell proliferation in vitro. A cell line-derived xenograft model was performed to determine on the role of UTX in HCT116 cell proliferation in vivo. The protein expression levels of UTX, KIF14, AKT, and GAPDH were examined by WB. Results Compared with surrounding normal tissues, UTX was upregulated in CRC tissues. Knockdown of UTX significantly inhibited proliferation and caused G0/G1 cell cycle arrest in CRC cell lines, and overexpression of UTX significantly promoted proliferation in CRC cells. Furthermore, knockdown of UTX significantly inhibited tumour growth in vivo. In addition, knockdown of UTX decreased the expression of KIF14 and pAKT and increased the expression of P21. Conclusions Our findings indicate that knockdown of UTX inhibits CRC cell proliferation and causes G0/G1 cell cycle arrest through downregulating expression of KIF 14 and pAKT. Thus, UTX may serve as a novel biomarker in CRC.
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Sun G, Zhang S, Zhang Y, Xu K, Zhang Q, Zhao T, Zheng X. Effective Dimensionality Reduction for Visualizing Neural Dynamics by Laplacian Eigenmaps. Neural Comput 2019; 31:1356-1379. [PMID: 31113304 DOI: 10.1162/neco_a_01203] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
With the development of neural recording technology, it has become possible to collect activities from hundreds or even thousands of neurons simultaneously. Visualization of neural population dynamics can help neuroscientists analyze large-scale neural activities efficiently. In this letter, Laplacian eigenmaps is applied to this task for the first time, and the experimental results show that the proposed method significantly outperforms the commonly used methods. This finding was confirmed by the systematic evaluation using nonhuman primate data, which contained the complex dynamics well suited for testing. According to our results, Laplacian eigenmaps is better than the other methods in various ways and can clearly visualize interesting biological phenomena related to neural dynamics.
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84
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Wang J, Liu J, Meng H, Guan Y, Yin Y, Zhao Z, Sun G, Wu A, Chen L, Yu X. Neural stem cells promote glioblastoma formation in nude mice. Clin Transl Oncol 2019; 21:1551-1560. [PMID: 30945128 DOI: 10.1007/s12094-019-02087-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Accepted: 03/11/2019] [Indexed: 12/15/2022]
Abstract
PURPOSE Neural stem cells (NSCs) have been characterized with the ability of self-renewal and neurogenesis, which has inspired lots of studies to clarify the functions of NSCs in neural injury, ischemic stroke, brain inflammation and neurodegenerative diseases. We focused on the relationship of NSCs with glioblastoma, since we have discovered that recurrent glioblastomas were inclined to be derived from subventricular zone (SVZ), where NSCs reside. We want to clarify whether NSCs are involved in glioblastoma relapse. METHODS Immunocytochemistry was used to confirm the stemness of NSCs. The Cell Counting Kit-8 was used to measure the proliferation of cells. Migration abilities were examined by wound healing and transwell assays, and tumor formation abilities were confirmed in nude mice. RESULTS We found in experiments that NSCs promoted proliferation of a glioblastoma cell line-Ln229, the migration ability of Ln229 cells was motivated by co-cultured with NSCs. Tumor formation of Ln229 cells was also accelerated in nude mice when co-transplanted with NSCs. In immunohistochemistry, we found that the Sox2- and Ki67-positive cells were much higher in co-transplanted groups than that of control groups. CONCLUSIONS These results imply the potential role that NSCs play in speeding up tumor formation in the process of glioblastoma relapse, providing the basis for dealing with newly diagnosed glioblastoma patients, which may help postpone the recurrence of glioblastoma as far as possible through preprocessing the tumor-adjacent SVZ tissue.
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Xing W, Li Q, Sun G, Cao R, Chen B, Jiang C, Ma L, Wang K. Abstract P6-02-14: Not presented. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-p6-02-14] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
This abstract was not presented at the conference.
Citation Format: Xing W, Li Q, Sun G, Cao R, Chen B, Jiang C, Ma L, Wang K. Not presented [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P6-02-14.
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Xing W, Li Q, Cao R, Sun G, Jiang C. Abstract P2-01-25: Not presented. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-p2-01-25] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
This abstract was not presented at the conference.
Citation Format: Xing W, Li Q, Cao R, Sun G, Jiang C. Not presented [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P2-01-25.
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Zhao J, Chen J, Zhang M, Tang X, Sun G, Zhu S, Liu J, Zhang H, Zhang X, Yin X, Zhao P, Zhu X, Ni Y, Dai J, Shen P, Chen N, Zeng H. The clinical significance of perineural invasion in patients with de novo metastatic prostate cancer. Andrology 2019; 7:184-192. [PMID: 30609313 DOI: 10.1111/andr.12578] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2018] [Revised: 11/11/2018] [Accepted: 11/27/2018] [Indexed: 02/05/2023]
Abstract
BACKGROUND The clinical value of perineural invasion (PNI) in patients with localized prostate cancer (PCa) is widely explored. However, its role in metastatic PCa (mPCa) remains unknown. OBJECTIVES We aim to investigate the clinical significance of PNI in patients with mPCa. MATERIALS AND METHODS Data of 515 mPCa patients between 2012 and 2018 were retrospectively studied. PNI and its intensity were identified by prostate biopsy. The prognostic value of PNI was evaluated by Kaplan-Meier curves and Cox proportional-hazards model. RESULTS Perineural invasion was detected in 170/515 (33.0%) cases. Among them 73/170 (42.9%) and 97/170 (57.1%) harbored unifocal PNI (uni-PNI) and multifocal PNI (multi-PNI), respectively. Compared to patients without PNI, those with PNI had statistically shorter castration-resistant PCa-free survival (CFS) and numerically shorter overall survival (OS) (mCFS: 15.4- vs. 18.5-Mo, p = 0.015; mOS: 63.8- vs. 71.4-Mo, p = 0.108). Patients harboring multi-PNI were associated with poorer clinical outcomes than those with uni-PNI (mCFS: 12.4- vs. 18.0-Mo, p = 0.040; mOS: 39.7-Mo vs. NR, p = 0.018) or those without PNI (mCFS: 12.4- vs. 18.5-Mo, p = 0.002; mOS: 39.7- vs. 71.4-Mo, p = 0.002). Totally, neither uni-PNI nor multi-PNI was an independent risk factor impacting survival outcomes in multivariate analyses. While remarkably, for patients with favorable/intermediate-risk mPCa, multi-PNI was an independent adverse prognosticator for both CFS and OS (CFS: HR: 1.705, 95% CI: 1.029-2.825, p = 0.038; OS: HR: 3.294, 95% CI: 1.464-7.413, p = 0.004). DISCUSSION AND CONCLUSION This study filled the blank of the clinical significance of PNI in mPCa. We found that multi-PNI could distinguish men with relatively poor prognosis from patients initially regarded as with favorable survival outcomes by other prognosticators, and thus, avoid disease underestimation in this group of patients. Our finding would help physicians have a deeper understanding of the heterogeneity of mPCa and make better individualized therapeutic strategy.
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Wang S, Tang Y, Fang H, Sun G, Jing H, Song Y, Wang J, Jin J, Liu Y, Ren H, Yu Z, Li Y. Breast Conservation Therapy Achieved Comparable Outcomes with Mastectomy in Patients with T1-2N0 Triple-Negative Breast Cancer: Analysis of 822 Patients in a Single Institution. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.1634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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89
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Wang S, Tang Y, Sun G, Fang H, Wang J, Jing H, Jin J, Song Y, Liu Y, Ren H, Yu Z, Li Y. Mastectomy Without Radiation Therapy Had Inferior Outcomes As Compared to Breast Conserving Surgery or Mastectomy Plus Radiation Therapy in Patients with T1-2N1 Triple-Negative Breast Cancer: Analysis of 412 Patients in a Single Institution. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.1636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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90
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Hawkins P, Sun Y, Dess R, Jackson W, Sun G, Bi N, Tewari M, Hayman J, Kalemkerian G, Lawrence T, Haken RT, Matuszak M, Kong F, Schipper M, Jolly S. Circulating microRNAs as Biomarkers of Radiation-Induced Cardiac Toxicity in Non-Small Cell Lung Cancer. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.06.341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Jackson W, Boonstra P, Hawkins P, Owen D, Jain P, Sun G, Arenberg D, Lee E, Kalemkerian G, Kong F, Hayman J, Lawrence T, Ten Haken R, Schipper M, Matuszak M, Jolly S. Pretreatment CT Based Emphysema and Fibrosis Scoring of Peri-Tumoral Lung Parenchyma Predicts Risk of Radiation Induced Lung Toxicity. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.1850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Kang F, Sun G, Wang A, Xiao X, Li YY, Lu J, Huang B. Multicolor Tuning and Temperature-Triggered Anomalous Eu 3+-Related Photoemission Enhancement via Interplay of Accelerated Energy Transfer and Release of Defect-Trapped Electrons in the Tb 3+,Eu 3+-Doped Strontium-Aluminum Chlorites. ACS APPLIED MATERIALS & INTERFACES 2018; 10:36157-36170. [PMID: 30256084 DOI: 10.1021/acsami.8b13728] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
So far, a large number of rare earth (RE) and non-RE-doped emission-tunable crystals based on controllable energy transfer have become available, but numerous mechanistic issues, particularly for those that involve temperature-dependent energy transfer between the well-shielded 4f RE ions, lack comprehensive theoretical and experimental investigation, limiting greatly their development and applications in the future. Here, we design and report a type of Tb3+,Eu3+-doped Sr3Al2O5Cl2 phosphors capable of multiemissions upon excitation at 376 nm, through using the orthorhombic Sr3Al2O5Cl2 as the host lattice while the well-shielded 4f Tb3+ and Eu3+ ions as dual luminescent centers. Our results reveal that the energy transfer from Tb3+ to Eu3+ ions, happening via an electric dipole-quadrupole (d-q) interaction, can be controlled by the doping ratio of Tb3+ and Eu3+, leading to the tunable emissions from green (0.3159, 0.5572) to red (0.6579, 0.3046). It is found from time-resolved photoluminescence (PL) spectra that this energy transfer begins at t = 5 μs and gradually ends at t ≥ 200 μs. Moreover, from temperature-dependent PL results, we reveal that the Eu3+ emission features an anomalous intensity enhancement at the earlier heating state. With the density functional theory (DFT) calculations, we have screened the possibilities of site preferential substitution problem. By jointly taking into account the X-ray diffraction Rietveld refinement, DFT findings, and PL and thermoluminescence spectra, a mechanistic profile is proposed for illustrating the PL observations. In particular, our discussions reveal that the temperature-triggered Eu3+ emission enhancement is due to the interplay of the temperature-induced accelerated energy transfer and defect-trapped electrons that are released upon the thermal stimulation. Unlike most of reported phosphor materials that are always suggested for phosphor-converted white light-emitting diodes, we propose new application possibilities for Tb3+,Eu3+-doped Sr3Al2O5Cl2 phosphors, such as anticounterfeiting, temperature-controlled fluorescence sensor, data storage, and security devices.
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Sun G, Li D, Ning Z, He Y, Chang J, Zhang F, Jiang C, Cheng Y, Xia L, Hu B, Yu C, Wang Z, Wang D, Wang G, Zhao Y, Wang J, Liang H, Xiong M, Peng W, Qian H. A real world study of apatinib treatment in gastric cancer: Current status and clinical benefit. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy282.067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Zhao J, Liu J, Sun G, Shen P, Chen J, Zhang X, Zhang H, Liu Z, Bao Y, Yang Y, Zhao P, Shu K, Zeng H. The prognostic value of the proportion and subtype patterns of intraductal carcinoma of the prostate in patients with de novo metastatic prostate cancer: A propensity score matching study. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy284.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Sun G, Zhang X, Zhao J, Chen J, Shen P, Liu Z, Zeng H. Adiponectin-AdipoR1 axis in renal cell carcinoma plays a pivotal role in tumor progression and drug resistance. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy283.095] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Cheng H, Sun G, Cheng T. Hematopoiesis and microenvironment in hematological malignancies. CELL REGENERATION 2018; 7:22-26. [PMID: 30671226 PMCID: PMC6326248 DOI: 10.1016/j.cr.2018.08.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Revised: 08/28/2018] [Accepted: 08/30/2018] [Indexed: 12/11/2022]
Abstract
Adult hematopoietic stem cells (HSCs) and progenitors (HPCs) reside in the bone marrow, a highly orchestrated architecture. In the bone marrow, the process of how HSCs exert self-renewal and differentiation is tightly regulated by the surrounding microenvironment, or niche. Recent advances in imaging technologies and numerous knockout or knockin mouse models have greatly improved our understanding of the organization of the bone marrow niche. This niche compartment includes a complex network of mesenchymal stem cells (MSC), osteolineage cells, endothelial cells (arterioles and sinusoids), sympathetic nerves, nonmyelinating Schwann cells and megakaryocytes. In addition, different types of mediators, such as cytokines/chemokines, reactive oxygen species (ROS) and exosomes play a pivotal role in regulating the function of hematopoietic cells. Therefore, the niche components and the hematopoietic system make up an ecological environment that maintains the homeostasis and responds to stress, damage or disease conditions. On the other hand, the niche compartment can become a traitor that can do harm to normal hematopoietic cells under pathological conditions. Studies on the diseased bone marrow niche have only recently begun to appear in the extant literature. In this short review, we discuss the most recent advances regarding the behaviors of normal hematopoietic cells and their niche alterations in hematological malignancies.
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Yang X, Zhang H, Shang J, Liu G, Xia T, Zhao C, Sun G, Dou H. Comparative analysis of the blood transcriptomes between wolves and dogs. Anim Genet 2018; 49:291-302. [PMID: 29953636 DOI: 10.1111/age.12675] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/27/2018] [Indexed: 12/24/2022]
Abstract
Dogs were domesticated by human and originated from wolves. Their evolutionary relationships have attracted much scientific interest due to their genetic affinity but different habitats. To identify the differences between dogs and wolves associated with domestication, we analysed the blood transcriptomes of wolves and dogs by RNA-Seq. We obtained a total of 30.87 Gb of raw reads from two dogs and three wolves using RNA-Seq technology. Comparisons of the wolf and dog transcriptomes revealed 524 genes differentially expressed genes between them. We found that some genes related to immune function (DCK, ICAM4, GAPDH and BSG) and aerobic capacity (HBA1, HBA2 and HBB) were more highly expressed in the wolf. Six differentially expressed genes related to the innate immune response (CCL23, TRIM10, DUSP10, RAB27A, CLEC5A and GCH1) were found in the wolf by a Gene Ontology enrichment analysis. Immune system development was also enriched only in the wolf group. The ALAS2, HMBS and FECH genes, shown to be enriched by the Kyoto Encyclopedia of Genes and Genomes analysis, were associated with the higher aerobic capacity and hypoxia endurance of the wolf. The results suggest that the wolf might have greater resistance to pathogens, hypoxia endurance and aerobic capacity than dogs do.
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Teng JMC, Bartholomew FB, Patel V, Sun G. Novel treatment of painful plantar keratoderma in pachyonychia congenita using topical sirolimus. Clin Exp Dermatol 2018; 43:968-971. [DOI: 10.1111/ced.13686] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/23/2017] [Indexed: 12/30/2022]
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Xie W, Zou C, Li S, Sun J, Kang F, Sun G. Simultaneous enhancement of photoluminescence and afterglow luminescence through Bi 3+ co-doping in the Sr 3Al 2O 5Cl 2:Eu 2+ phosphor. Phys Chem Chem Phys 2018; 20:13983-13993. [PMID: 29744499 DOI: 10.1039/c8cp00570b] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this work, the Sr3Al2O5Cl2:Eu2+ and Sr3Al2O5Cl2:Eu2+,Bi3+ phosphors are synthesized by high temperature solid state reactions. Various characterization techniques, such as X-ray diffraction (XRD), Rietveld refinement, photoluminescence (PL) spectroscopy, afterglow spectroscopy, decay curves and thermoluminescence (TL) spectroscopy, are used to examine the phase purity and PL properties of all samples. The XRD results show that all samples belong to the targeted orthorhombic Sr3Al2O5Cl2 phase with the space group of P212121. Upon excitation with UV light, Eu2+-related reddish photoemission and afterglow luminescence are observed in the Sr3Al2O5Cl2:Eu2+ samples. More remarkably, we find that co-doping with Bi3+ ions can enhance the Eu2+-related photoemission and afterglow intensity as well the afterglow duration. For the optimal Sr3Al2O5Cl2:Eu2+,Bi3+ sample, the afterglow luminescence can continue for nearly 550 min in the dark, which is almost 3-fold the duration of the afterglow luminescence of the optimal Sr3Al2O5Cl2:Eu2+ sample. The TL spectra reveal that co-doping with Bi3+ ions can enhance the defect population that corresponds to trap depths at 63 °C, 75 °C and 150 °C, of which the former two trap depths may help to improve the Eu2+-related luminescence in addition to the afterglow property. Due to an increase in the trap concentration, there is an increase in the re-trapping possibility for the released carriers. This work not only achieves enhanced afterglow luminescence of the Sr3Al2O5Cl2:Eu2+ phosphor by co-doping with the non-rare earth (RE) Bi3+ ions, but also provides new insights into the design of RE and non-RE related enhanced afterglow photonic materials for the future.
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Wensheng L, Wu R, Wang X, Xu M, Sun G, Sun C. Clinical Complications of Combined Phacoemulsification and Vitrectomy for Eyes with Coexisting Cataract and Vitreoretinal Diseases. Eur J Ophthalmol 2018; 19:37-45. [PMID: 19123147 DOI: 10.1177/112067210901900106] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Purpose To discuss the intraoperative and postoperative complications of combining phacoemulsification and foldable intraocular lens (IOL) implantation with pars plana vitrectomy in eyes with significant cataract and coexisting vitreoretinal diseases. Methods This retrospective study consisted of 186 eyes of 149 patients with various vitreoretinal abnormalities and visually significant cataracts. Vitreoretinal surgery was combined with clear corneal phacoemulsification and foldable IOL implantation. Main outcome measures were the intraoperative and postoperative complications at from 6 to 56 months. Results The most common intraoperative complication was iatrogenic retinal hole (5.3%), transient corneal edema (3.2%), and posterior capsule break (2.1%). The most common postoperative complication was posterior capsule opacification (21.5%) and elevated intraocular pressure (9.7%), macular edema (8.1%), fibrinous reaction (6.9%), vitreous hemorrhage (3.7%), posterior synechiae (3.7%), and recurrent retinal detachment (3.2%). Postoperatively, in 162 eyes (87.1%), visual acuity improved by 3 lines or more on the Snellen chart. In 14 eyes (7.5%), vision remained within 3 lines of preoperative levels and in 10 eyes (5.3%), vision had decreased at the last follow-up. Conclusions Postoperative complications did not increase significantly in the combined phacoemulsification and vitreoretinal surgery. Combined vitreoretinal surgery and phacoemulsification with foldable IOL implantation is safe and effective in treating vitreoretinal abnormalities coexisting with cataract. Based on extensive experience with the combined procedure, the authors suggest that combined surgery is recommended in select patients having simultaneous vitreoretinal pathologic changes and cataract.
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