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Liu Z, Nie L, Pei X, Zhang L, Long S, Li Y, Jiao H, Gong W. Seafood waste derived Pt/Chitin nanocatalyst for efficient hydrogenation of nitroaromatic compounds. Int J Biol Macromol 2024; 264:130598. [PMID: 38447839 DOI: 10.1016/j.ijbiomac.2024.130598] [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: 01/11/2024] [Revised: 02/29/2024] [Accepted: 03/01/2024] [Indexed: 03/08/2024]
Abstract
The fabrication of reliable, reusable and efficient catalyst is crucial for the conversion of nitroaromatic compounds into more chemically valuable amine-based molecules. In this study, a series of chitin supported platinum (Pt) catalysts with high catalytic activity, stability, and reusability were developed by using chitin derived from seafood waste as raw materials. The catalytic performance differences among these catalysts activated by different methods were investigated by hydrogenation of nitroaromatic compounds. The results showed that the multilayer hierarchical pore structure and abundance of hydroxyl and acetamido groups in chitin provided ample anchoring sites for Pt nanoparticles (NPs), ensuring the high dispersion of Pt NPs. Moreover, the interconnected channels between chitin nanofibrous microspheres facilitated rapid transport of reaction substrates. The best Pt/Chitin catalyst exhibited excellent catalytic activity and broad substrate applicability in hydrogenation of nitroaromatic compounds. Significantly, even after 20 runs, no discernible deactivation of activity was observed, demonstrating exceptional catalytic reusability. The application of seafood waste-based catalysts is conducive to the development of a green/sustainable society.
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Affiliation(s)
- Zhuoyue Liu
- School of Materials and Architectural Engineering, Guizhou Normal University, Guiyang 550025, China
| | - Ling Nie
- School of Materials Science & Engineering, Hubei University of Automotive Technology, Shiyan 442002, China
| | - Xianglin Pei
- School of Materials and Architectural Engineering, Guizhou Normal University, Guiyang 550025, China.
| | - Lingyu Zhang
- School of Materials and Architectural Engineering, Guizhou Normal University, Guiyang 550025, China
| | - Siyu Long
- School of Materials and Architectural Engineering, Guizhou Normal University, Guiyang 550025, China
| | - Yan Li
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Huibin Jiao
- School of Materials Science and Engineering, Guizhou Minzu University, Guiyang 550025, China.
| | - Wei Gong
- School of Materials and Architectural Engineering, Guizhou Normal University, Guiyang 550025, China.
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Ding J, Sun B, Gao Y, Zheng J, Liu C, Huang J, Jia N, Pei X, Jiang X, Hu S, Xia B, Meng Y, Dai Z, Qi X, Wang J. Evidence for chromium crosses blood brain barrier from the hypothalamus in chromium mice model. Ecotoxicol Environ Saf 2024; 273:116179. [PMID: 38460200 DOI: 10.1016/j.ecoenv.2024.116179] [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] [Received: 12/26/2023] [Revised: 02/27/2024] [Accepted: 03/03/2024] [Indexed: 03/11/2024]
Abstract
It has been shown that exposure to hexavalent Chromium, Cr (Ⅵ), via nasal cavity can have neurotoxicological effects and induces behavioral impairment due to the fact that blood brain barrier (BBB) does not cover olfactory bulb. But whether Cr (Ⅵ) can cross the BBB and have a toxicological effects in central nervous system (CNS) remains unclear. Therefore, we investigated the effects of Cr (Ⅵ) on mice treated with different concentrations and exposure time (14 days and 28 days) of Cr (Ⅵ) via intraperitoneal injection. Results revealed that Cr accumulated in hypothalamus (HY) in a timely dependent manner. Much more severer neuropathologies was observed in the group of mice exposed to Cr (Ⅵ) for 28 days than that for 14 days. Gliosis, neuronal morphological abnormalities, synaptic degeneration, BBB disruption and neuronal number loss were observed in HY. In terms of mechanism, the Nrf2 related antioxidant stress signaling dysfunction and activated NF-κB related inflammatory pathway were observed in HY of Cr (Ⅵ) intoxication mice. And these neuropathologies and signaling defects appeared in a timely dependent manner. Taking together, we proved that Cr (Ⅵ) can enter HY due to weaker BBB in HY and HY is the most vulnerable CNS region to Cr (Ⅵ) exposure. The concentration of Cr in HY increased along with time. The accumulated Cr in HY can cause BBB disruption, neuronal morphological abnormalities, synaptic degeneration and gliosis through Nrf2 and NF-κB signaling pathway. This finding improves our understanding of the neurological dysfunctions observed in individuals who have occupational exposure to Cr (Ⅵ), and provided potential therapeutic targets to treat neurotoxicological pathologies induced by Cr (Ⅵ).
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Affiliation(s)
- Jiuyang Ding
- Key Laboratory of Human Brain bank for Functions and Diseases of Department of Education of Guizhou Province, Guizhou Medical University, Guiyang 550025, China; Key Laboratory of Endemic and Ethnic Diseases, Ministry of Education, Guizhou Medical University, Guiyang 550004, China; School of Forensic Medicine, Guizhou Medical University, Guiyang 550004, China
| | - Baofei Sun
- Key Laboratory of Human Brain bank for Functions and Diseases of Department of Education of Guizhou Province, Guizhou Medical University, Guiyang 550025, China
| | - Yingdong Gao
- Department of Reproductive Medicine, Taian Maternity and Child Health Hospital, Taian 271000, China
| | - Juan Zheng
- Department of Reproductive Medicine, Taian Maternity and Child Health Hospital, Taian 271000, China
| | - Changyou Liu
- Department of Pediatrics, Taian Maternity and Child Health Hospital, Taian 271000, China
| | - Jian Huang
- School of Forensic Medicine, Kunming Medical University, Kunming 650500, China
| | - Nannan Jia
- Neonatal Screening Center, Taian Maternity and Child Health Hospital, Taian, China
| | - Xianglin Pei
- School of Materials and Architectural Engineering, Guizhou Normal University, Guiyang 550025, China
| | - Xueyu Jiang
- College of Food Science and Engineering, Wuhan Polytechnic University, Wuhan 430023, China
| | - Shanshan Hu
- Good Clinical Practice Center, Affiliated Hospital of Zunyi Medical University, Zunyi 563003, China
| | - Bing Xia
- School of Forensic Medicine, Guizhou Medical University, Guiyang 550004, China
| | - Yunle Meng
- Institute of Forensic Science, Ministry of Public Security, Beijing 100038, China
| | - Zhuihui Dai
- State Key Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China.
| | - Xiaolan Qi
- Key Laboratory of Endemic and Ethnic Diseases, Ministry of Education, Guizhou Medical University, Guiyang 550004, China.
| | - Jiawen Wang
- School of Forensic Medicine, Guizhou Medical University, Guiyang 550004, China.
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Ding J, Wu J, Hou X, Yang L, Gao Y, Zheng J, Jia N, He Z, Zhang H, Wang C, Qi X, Huang J, Pei X, Wang J. α-synuclein-lack expression rescues methamphetamine-induced mossy fiber degeneration in dorsal hippocampal CA3. Neurotoxicology 2024; 101:36-45. [PMID: 38311184 DOI: 10.1016/j.neuro.2024.01.005] [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: 04/24/2023] [Revised: 01/20/2024] [Accepted: 01/31/2024] [Indexed: 02/09/2024]
Abstract
Methamphetamine (METH) - induced cognitive impairments may be related to synaptic degeneration at mossy fiber terminals, critical for spatial memory formation in hippocampal circuits. We have previously found METH-induced neurodegeneration in the striatum by increasing the α-synuclein (α-SYN) level. However, whether and how the METH-induced mossy fiber degeneration is also blamed for the abnormal accumulation of α-SYN remains to be elucidated. Chronic METH exposure decreased mossy fiber density but upregulatedα-SYN and phosphorylated TAU (TAU-pSer396) in hippocampal CA3, associated with glial cell overactivation, axonal neuropathies, and memory impairment. Notably, the knockout of the α-SYN gene significantly alleviated the METH-induced mossy fiber degeneration and memory impairment. Meanwhile, the TAU-pSer396 accumulation and glial activation were ameliorated by α-SYN knockout. Our findings suggest an essential role of α-SYN in mediating METH-induced mossy fiber degeneration, providing promising therapeutic and prophylactic targets for METH-related neurodegenerative diseases.
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Affiliation(s)
- Jiuyang Ding
- School of Forensic Medicine, Guizhou Medical University, Guiyang, China; Key Laboratory of Endemic and Ethnic Diseases, Ministry of Education, Guizhou Medical University, Guiyang, China
| | - Jun Wu
- School of Forensic Medicine, Guizhou Medical University, Guiyang, China
| | - Xiaotao Hou
- Guangzhou KingMed Center for Clinical Laboratory Co., Ltd., Guangzhou, China; Guangdong Provincial Key Laboratory of Genetic Disease Diagnostic, Guangzhou, China
| | - Li Yang
- Department of Reproductive Medicine, Taian Maternity and Child Health Hospital, Taian, China
| | - Yingdong Gao
- Department of Reproductive Medicine, Taian Maternity and Child Health Hospital, Taian, China
| | - Juan Zheng
- Department of Reproductive Medicine, Taian Maternity and Child Health Hospital, Taian, China
| | - Nannan Jia
- Neonatal Screening Center, Taian Maternity and Child Health Hospital, Taian, China
| | - Zheng He
- Neonatal Screening Center, Taian Maternity and Child Health Hospital, Taian, China
| | - Hui Zhang
- Department of Reproductive Medicine, Taian Maternity and Child Health Hospital, Taian, China
| | - Chengfei Wang
- School of Forensic Medicine, Guizhou Medical University, Guiyang, China
| | - Xiaolan Qi
- Key Laboratory of Endemic and Ethnic Diseases, Ministry of Education, Guizhou Medical University, Guiyang, China
| | - Jiang Huang
- School of Forensic Medicine, Guizhou Medical University, Guiyang, China
| | - Xianglin Pei
- School of Materials and Architectural Engineering, Guizhou Normal University, Guiyang China.
| | - Jiawen Wang
- School of Forensic Medicine, Guizhou Medical University, Guiyang, China.
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Zhu Q, Yin X, Tan Y, Wei D, Li Y, Pei X. Highly dispersed palladium nano-catalyst anchored on N-doped nanoporous carbon microspheres derived from chitosan for efficient and stable hydrogenation of quinoline. Int J Biol Macromol 2024; 254:127949. [PMID: 37951427 DOI: 10.1016/j.ijbiomac.2023.127949] [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: 05/16/2023] [Revised: 10/20/2023] [Accepted: 10/30/2023] [Indexed: 11/14/2023]
Abstract
Under the background of green chemistry, the synthesis of N-heterocycles using efficient, stable and long-life catalysts has still faced great challenges. Herein, we used biomass resource chitosan to fabricate a nanoporous chitosan carbon microsphere (CCM), and successfully designed a stable and efficient Pd nano-catalyst (CCM/Pd). Various physicochemical characterizations provided convincible evidences that the palladium nanoparticles (NPs) were tightly and evenly dispersed on the CCM with a mean diameter of 2.28 nm based on the nanoporous structure and abundant functional N/O groups in CCM. Importantly, the graphitized constructure, the formed defects and larger surface area in CCM were able to promote the immobilization of Pd NPs and the electron transfer between Pd and CCM, thereby significantly improving the catalytic activity. The CCM/Pd catalyst was applied for hydrogenation of quinoline compounds, which showed excellent catalytic activity and durability, as well as good substrate applicability. The application of renewable biomass-based catalysts contributes to the progression of a green/sustainable society.
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Affiliation(s)
- Qiudi Zhu
- School of Chemistry and Materials Science, Guizhou Normal University, Guiyang 550025, China
| | - Xiaogang Yin
- School of Chemistry and Materials Science, Guizhou Normal University, Guiyang 550025, China.
| | - Youjuan Tan
- School of Chemistry and Materials Science, Guizhou Normal University, Guiyang 550025, China
| | - Duoduo Wei
- School of Chemistry and Materials Science, Guizhou Normal University, Guiyang 550025, China
| | - Yan Li
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Xianglin Pei
- School of Chemistry and Materials Science, Guizhou Normal University, Guiyang 550025, China; Guizhou Key Laboratory of Inorganic Nonmetallic Functional Materials, Lightweight Materials Engineering Research Center of the Education Department of Guizhou, Guizhou Normal University, Guiyang 550025, China.
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Zhu B, He J, Ye X, Pei X, Bai Y, Gao F, Guo L, Yong H, Zhao W. Role of Cisplatin in Inducing Acute Kidney Injury and Pyroptosis in Mice via the Exosome miR-122/ELAVL1 Regulatory Axis. Physiol Res 2023; 72:753-765. [PMID: 38215062 PMCID: PMC10805259] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Accepted: 09/20/2023] [Indexed: 01/14/2024] Open
Abstract
Although cisplatin is an effective chemotherapy drug for the treatment of various cancers, its clinical use is limited due to its side effects, especially nephrotoxicity. Unfortunately, acute kidney injury (AKI) caused by cisplatin remains one of the main challenges in effective cancer treatment. Evidence increasingly suggests that renal inflammation and pyroptotic inflammatory cell death of renal tubular epithelial cells (RTECs) mainly determine the progression and outcome of cisplatin-induced AKI. However, it is not clear how cisplatin regulates the pyroptosis of RTECs cells in AKI. The current study aimed to determine the regulation mechanism of AKI induced by cisplatin. We used cisplatin to induce AKI in vivo. We performed H&E staining of mouse kidney tissue sections and evaluated serological indicators of kidney injury (including blood urea nitrogen (BUN), serum creatinine, and tumor necrosis factor-alpha (TNF-alpha)). We used immunohistochemistry and western blot to detect the important substrate protein gasdermin D (GSDMD) and key target caspase-1 of pyroptosis, respectively. Cisplatin induced mouse AKI and RTECs pyroptosis. HK2 cell-derived exosomes treated with cisplatin influenced pyroptosis of the surrounding HK2 cells. Cisplatin-treated HK2 cells exosome-derived miR-122 regulated pyroptosis in the surrounding cells. Exosome-derived miR-122 affected cisplatin-induced AKI and HK2 cells pyroptosis by regulating the expression of embryonic lethal abnormal vision (ELAVL1). These results suggest that exosome miR-122 inhibited pyroptosis and AKI by targeting ELAVL1 under cisplatin treatment, and this offers a potential target for the treatment of AKI.
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Affiliation(s)
- B Zhu
- Department of Geriatric, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
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Zheng X, Li Y, Li W, Pei X, Ye D. Chitosan derived efficient and stable Pd nano-catalyst for high efficiency hydrogenation. Int J Biol Macromol 2023; 241:124615. [PMID: 37119901 DOI: 10.1016/j.ijbiomac.2023.124615] [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] [Received: 02/10/2023] [Revised: 04/16/2023] [Accepted: 04/22/2023] [Indexed: 05/01/2023]
Abstract
The design and development of green and efficient supported catalysts is the frontier direction in the field of green synthesis, which conforms to the strategic concept of green sustainable chemistry and "carbon neutrality". Herein, we used a renewable resource chitosan (CS) derived from seafood wastes of chitin as carriers to design two different chitosan-supported palladium (Pd) nano-catalysts through different activation methods. The Pd particles were firmly and uniformly dispersed on the chitosan microspheres due to the interconnected nanoporous structure and functional groups of chitosan, proved by diverse characterizations. The chitosan supported catalysts (Pd@CS) was applied to hydrogenation of 4-nitrophenol, which showed competitive catalytic activity compared to commercial Pd/C, un-supported nano-Pd and Pd(OAc)2 catalysts, as well as excellent catalytic activity, good reusability, long-life and broad applicability in selective hydrogenation of aromatic aldehydes, suggesting potential of applications in green industrial catalysis.
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Affiliation(s)
- Xingli Zheng
- School of Materials and Architectural Engineering, Guizhou Normal University, Guiyang 550025, China; College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Yan Li
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Wendian Li
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Xianglin Pei
- School of Materials and Architectural Engineering, Guizhou Normal University, Guiyang 550025, China; College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China; Guizhou Key Laboratory of Inorganic Nonmetallic Functional Materials, Guizhou Normal University, Guiyang 550025, China.
| | - Dongdong Ye
- College of Light-Textile Engineering and Art, Anhui Agricultural University, Hefei 230036, China.
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7
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Pei X, He Y, Wang JY, Wang H, Bo QB. Substituted benzoate-anchored decanuclear titanium-oxo clusters featuring unprecedented defective double-cubane geometry. CrystEngComm 2023. [DOI: 10.1039/d2ce01653b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Based on DMF solvent, four titanium-oxo clusters (TOCs) [Ti10(μ3-O)12(L)6 (OiPr)10 (DMF)2] (Ti-L) (L=4-methylbenzoate(MB), 3,5-Di-tert-butylbenzoate (DTBB), 4-Methoxybenzoate (MOB) and 4-Methyl-3,5-dinitrobenzoate(MDNB) with the same coordination environments have been solvothermally synthesized with high...
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8
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Selenica P, Marra A, Choudhury NJ, Gazzo A, Falcon CJ, Patel J, Pei X, Zhu Y, Ng CKY, Curry M, Heller G, Zhang YK, Berger MF, Ladanyi M, Rudin CM, Chandarlapaty S, Lovly CM, Reis-Filho JS, Yu HA. APOBEC mutagenesis, kataegis, chromothripsis in EGFR-mutant osimertinib-resistant lung adenocarcinomas. Ann Oncol 2022; 33:1284-1295. [PMID: 36089134 PMCID: PMC10360454 DOI: 10.1016/j.annonc.2022.09.151] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 08/02/2022] [Accepted: 09/01/2022] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Studies of targeted therapy resistance in lung cancer have primarily focused on single-gene alterations. Based on prior work implicating apolipoprotein b mRNA-editing enzyme, catalytic polypeptide-like (APOBEC) mutagenesis in histological transformation of epidermal growth factor receptor (EGFR)-mutant lung cancers, we hypothesized that mutational signature analysis may help elucidate acquired resistance to targeted therapies. PATIENTS AND METHODS APOBEC mutational signatures derived from an Food and Drug Administration-cleared multigene panel [Memorial Sloan Kettering Cancer Center Integrated Mutation Profiling of Actionable Cancer Targets (MSK-IMPACT)] using the Signature Multivariate Analysis (SigMA) algorithm were validated against the gold standard of mutational signatures derived from whole-exome sequencing. Mutational signatures were decomposed in 3276 unique lung adenocarcinomas (LUADs), including 93 paired osimertinib-naïve and -resistant EGFR-mutant tumors. Associations between APOBEC and mechanisms of resistance to osimertinib were investigated. Whole-genome sequencing was carried out on available EGFR-mutant lung cancer samples (10 paired, 17 unpaired) to investigate large-scale genomic alterations potentially contributing to osimertinib resistance. RESULTS APOBEC mutational signatures were more frequent in receptor tyrosine kinase (RTK)-driven lung cancers (EGFR, ALK, RET, and ROS1; 25%) compared to LUADs at large (20%, P < 0.001); across all subtypes, APOBEC mutational signatures were enriched in subclonal mutations (P < 0.001). In EGFR-mutant lung cancers, osimertinib-resistant samples more frequently displayed an APOBEC-dominant mutational signature compared to osimertinib-naïve samples (28% versus 14%, P = 0.03). Specifically, mutations detected in osimertinib-resistant tumors but not in pre-treatment samples significantly more frequently displayed an APOBEC-dominant mutational signature (44% versus 23%, P < 0.001). EGFR-mutant samples with APOBEC-dominant signatures had enrichment of large-scale genomic rearrangements (P = 0.01) and kataegis (P = 0.03) in areas of APOBEC mutagenesis. CONCLUSIONS APOBEC mutational signatures are frequent in RTK-driven LUADs and increase under the selective pressure of osimertinib in EGFR-mutant lung cancer. APOBEC mutational signature enrichment in subclonal mutations, private mutations acquired after osimertinib treatment, and areas of large-scale genomic rearrangements highlights a potentially fundamental role for APOBEC mutagenesis in the development of resistance to targeted therapies, which may be potentially exploited to overcome such resistance.
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Affiliation(s)
- P Selenica
- Memorial Sloan Kettering Cancer Center, New York City
| | - A Marra
- Memorial Sloan Kettering Cancer Center, New York City
| | - N J Choudhury
- Department of Medicine, Thoracic Oncology Service, Memorial Sloan Kettering Cancer Center, New York City
| | - A Gazzo
- Memorial Sloan Kettering Cancer Center, New York City
| | - C J Falcon
- Druckenmiller Center for Cancer Research, Memorial Sloan Kettering Cancer Center, New York City, USA
| | - J Patel
- Memorial Sloan Kettering Cancer Center, New York City
| | - X Pei
- Memorial Sloan Kettering Cancer Center, New York City
| | - Y Zhu
- Memorial Sloan Kettering Cancer Center, New York City
| | - C K Y Ng
- Department for BioMedical Research (DBMR), University of Bern, Bern, Switzerland
| | - M Curry
- Department of Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, New York City
| | - G Heller
- Department of Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, New York City
| | - Y-K Zhang
- Department of Medicine, Division of Hematology and Oncology and Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, Nashville
| | - M F Berger
- Memorial Sloan Kettering Cancer Center, New York City; Marie-Josée and Henry R. Kravis Center for Molecular Oncology, Memorial Sloan Kettering Cancer Center, New York City; Department of Pathology, Molecular Diagnostics Service, Memorial Sloan Kettering Cancer Center, New York City
| | - M Ladanyi
- Department of Pathology, Molecular Diagnostics Service, Memorial Sloan Kettering Cancer Center, New York City
| | - C M Rudin
- Department of Medicine, Thoracic Oncology Service, Memorial Sloan Kettering Cancer Center, New York City; Department of Medicine, Weill Cornell Medical College, New York City, USA
| | - S Chandarlapaty
- Memorial Sloan Kettering Cancer Center, New York City; Department of Medicine, Weill Cornell Medical College, New York City, USA
| | - C M Lovly
- Department of Medicine, Division of Hematology and Oncology and Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, Nashville
| | | | - H A Yu
- Department of Medicine, Thoracic Oncology Service, Memorial Sloan Kettering Cancer Center, New York City; Department of Medicine, Weill Cornell Medical College, New York City, USA.
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Hua J, Wang M, Zhang D, Pei X, Zhao X, Ma X. A THREE-DIMENSIONAL CADMIUM MIXED LIGANDS COORDINATION POLYMER WITH CO2 ADSORPTION ABILITY. J STRUCT CHEM+ 2022. [DOI: 10.1134/s0022476622120162] [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: 12/29/2022]
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10
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Luo H, Jin F, Yang X, Li C, Li Q, Tan X, Li S, Peng H, Hu W, He H, Pei X. Effect of Diode-Based Transmission Detector Measurement on Dose Perturbation during Delivery of 6MV Photon. Int J Radiat Oncol Biol Phys 2022. [DOI: 10.1016/j.ijrobp.2022.07.2166] [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: 11/27/2022]
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Shuai Y, Lou J, Pei X, Su C, Ye X, Zhang L, Wang Y, Xu Z, Gao P, He S, Wang Z, Chen K. Constructing an In Situ Polymer Electrolyte and a Na-Rich Artificial SEI Layer toward Practical Solid-State Na Metal Batteries. ACS Appl Mater Interfaces 2022; 14:45382-45391. [PMID: 36170595 DOI: 10.1021/acsami.2c12518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Sodium is one of the most promising anode candidates for the beyond-lithium-ion batteries. The development of Na metal batteries with a high energy density, high safety, and low cost is desirable to meet the requirements of both portable and stationary electrical energy storage. However, several problems caused by the unstable Na metal anode and the unsafe liquid electrolyte severely hinder their practical applications. Herein, we report a facile but effective methodology to construct an in situ polymer electrolyte and Na-rich artificial solid-electrolyte interface (SEI) layer concurrently. The obtained integrated Na metal batteries display long cycling life and admirable dynamic performance with total inhibition of dendrites, excellent contact of the cathode/polymer electrolyte, and reduction of side reactions during cycling. The modified Na metal electrode with the in situ polymer electrolyte is stable and dendrite-free in repeated plating/stripping processes with a life span of above 1000 h. Moreover, this method is compatible with different cathodes that demonstrate outstanding electrochemical performance in full cells. We believe that this approach provides a practical solution to solid-state Na metal batteries.
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Affiliation(s)
- Yi Shuai
- School of Resources and Environment, Carbon Neutralization Research Institute, Hunan University of Technology and Business, Changsha 410083, China
| | - Jin Lou
- School of Resources and Environment, Carbon Neutralization Research Institute, Hunan University of Technology and Business, Changsha 410083, China
- Light Alloy Research Institute, Central South University, Changsha 410083, China
| | - Xianglin Pei
- School of Resources and Environment, Carbon Neutralization Research Institute, Hunan University of Technology and Business, Changsha 410083, China
| | - Changqing Su
- School of Resources and Environment, Carbon Neutralization Research Institute, Hunan University of Technology and Business, Changsha 410083, China
| | - Xiaosheng Ye
- School of Resources and Environment, Carbon Neutralization Research Institute, Hunan University of Technology and Business, Changsha 410083, China
| | - Limin Zhang
- School of Resources and Environment, Carbon Neutralization Research Institute, Hunan University of Technology and Business, Changsha 410083, China
| | - Yu Wang
- Department of Biomedical Engineering, Changzhi Medical College, Changzhi 046000, China
| | - Zhixin Xu
- Shanghai Electrochemical Energy Devices Research Center, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Pingping Gao
- Light Alloy Research Institute, Central South University, Changsha 410083, China
| | - Shijie He
- Light Alloy Research Institute, Central South University, Changsha 410083, China
| | - Zhilong Wang
- Light Alloy Research Institute, Central South University, Changsha 410083, China
| | - Kanghua Chen
- Light Alloy Research Institute, Central South University, Changsha 410083, China
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Tirunagaru V, Singh K, Pei X, Doebele R. Combination of MDM2 inhibition with milademetan and MEK inhibition leads to improved anti-tumor activity in cancer models harboring WT TP53. Eur J Cancer 2022. [DOI: 10.1016/s0959-8049(22)00858-9] [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: 11/03/2022]
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13
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Meng Z, Wu K, Pei X, Gu Y, Li L, He D. 12P In vitro and in vivo investigations of anlotinib in bladder cancer treatment. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.040] [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: 11/01/2022] Open
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Marra A, Gazzo A, Gupta A, Selenica P, Da Silva E, Pareja F, Pei X, Zhu Y, Razavi P, Safonov A, Ferraro E, Harris R, Riaz N, Reis-Filho J, Chandarlapaty S. 210O Mutational signature analysis reveals patterns of genomic instability linked to resistance to endocrine therapy (ET) +/- CDK 4/6 inhibition (CDK4/6i) in estrogen receptor-positive/HER2-negative (ER+/HER2-) metastatic breast cancer (MBC). Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.249] [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] Open
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15
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Long S, Zhang L, Liu Z, Jiao H, Lei A, Gong W, Pei X. Fabrication of Biomass Derived Pt-Ni Bimetallic Catalyst and Its Selective Hydrogenation for 4-Nitrostyrene. Nanomaterials (Basel) 2022; 12:2968. [PMID: 36080004 PMCID: PMC9457902 DOI: 10.3390/nano12172968] [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] [Figures] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 08/22/2022] [Accepted: 08/23/2022] [Indexed: 06/15/2023]
Abstract
The hydrogenation products of aromatic molecules with reducible groups (such as C=C, NO2, C=O, etc.) are relatively critical intermediate compounds in fine chemicals, but how to accurately reduce only specific groups is still challenging. In this work, a bimetallic Pt-Ni/Chitin catalyst was prepared for the first time by using renewable biomass resource chitin as support. As the carrier, the chitin was constructed into porous nanofibrous microspheres through the sol-gel strategy, which was favorable for the adhesion of nano-metals and the exchange of reactive substances due to its large surface area, porous structure, and rich functional groups. Then the Pt-Ni/Chitin catalyst was applied to selective hydrogenation with the model substrate of 4-nitrostyrene. As the highly dispersed Pt-Ni NPs with abundant exposed active sites and the synergistic effect of bimetals, the Pt-Ni/Chitin catalyst could efficiently and selectively hydrogenate only NO2 or C=C with yields of ~99% and TOF of 660 h-1, as well as good stability. This utilization of biomass resources to build catalyst materials would be important for the green and sustainable chemistry.
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Affiliation(s)
- Siyu Long
- School of Materials and Architectural Engineering, Guizhou Normal University, Guiyang 550025, China
- Guizhou Key Laboratory of Inorganic Nonmetallic Functional Materials, Guizhou Normal University, Guiyang 550025, China
| | - Lingyu Zhang
- School of Materials and Architectural Engineering, Guizhou Normal University, Guiyang 550025, China
- Guizhou Key Laboratory of Inorganic Nonmetallic Functional Materials, Guizhou Normal University, Guiyang 550025, China
| | - Zhuoyue Liu
- School of Materials and Architectural Engineering, Guizhou Normal University, Guiyang 550025, China
- Guizhou Key Laboratory of Inorganic Nonmetallic Functional Materials, Guizhou Normal University, Guiyang 550025, China
| | - Huibin Jiao
- School of Materials Science and Engineering, Guizhou Minzu University, Guiyang 550025, China
| | - Aiwen Lei
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Wei Gong
- School of Materials and Architectural Engineering, Guizhou Normal University, Guiyang 550025, China
- Guizhou Key Laboratory of Inorganic Nonmetallic Functional Materials, Guizhou Normal University, Guiyang 550025, China
| | - Xianglin Pei
- School of Materials and Architectural Engineering, Guizhou Normal University, Guiyang 550025, China
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
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16
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Pei X, Zheng X, Liu X, Lei A, Zhang L, Yin X. Facile fabrication of highly dispersed Pd catalyst on nanoporous chitosan and its application in environmental catalysis. Carbohydr Polym 2022; 286:119313. [PMID: 35337519 DOI: 10.1016/j.carbpol.2022.119313] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Revised: 03/01/2022] [Accepted: 03/01/2022] [Indexed: 12/01/2022]
Abstract
With the development of society, the problem of environmental pollution is becoming increasingly serious, such as the typical pollution of nitro compounds or dyes in wastewater. An effective strategy to remove these organic pollutants is catalytic conversion, including converting them into more chemically valuable compounds. Herein, a nanoporous chitosan microsphere derived from seafood waste resources of chitin was constructed via sol-gel method, which was used as supports to successfully fabricate a highly dispersed Pd nano-catalyst (mean diameter ~ 1.8 nm) via a facile way based on its interconnected nanoporous structure and rich functional -OH/-NH2 groups. The synthetic catalyst was applied to the hydrogenation of toxic nitro compounds, which could efficiently and selectively catalyze the conversion of nitro compounds. The catalyst was also used for the degradation of some representative dyes, which also showed good activity and stability, suggesting potential of applications in green environmental governance.
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Affiliation(s)
- Xianglin Pei
- School of Materials and Architectural Engineering, Guizhou Normal University, Guiyang 550025, China; College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Xingli Zheng
- School of Materials and Architectural Engineering, Guizhou Normal University, Guiyang 550025, China; College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Xinyun Liu
- School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang 550025, China
| | - Aiwen Lei
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Lina Zhang
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Xiaogang Yin
- School of Materials and Architectural Engineering, Guizhou Normal University, Guiyang 550025, China.
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17
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Gong Y, Li Z, Li H, Wu W, Pei X, Tu J, Zhou W, Jiang M, Gong W. Thermal‐induced dielectric response in mechanically durable polyvinylidene fluoride–kapok encapsulated polyethylene glycol composite films. POLYM ENG SCI 2022. [DOI: 10.1002/pen.25982] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Yutie Gong
- Key Laboratory of Textile Fiber and Products (Ministry of Education), School of Materials Science and Engineering Wuhan Textile University Wuhan People's Republic of China
| | - Zhenzhen Li
- Key Laboratory of Textile Fiber and Products (Ministry of Education), School of Materials Science and Engineering Wuhan Textile University Wuhan People's Republic of China
| | - Hairong Li
- Mechanical Metrology Division Hubei Institute of Measurement and Testing Technology Wuhan People's Republic of China
| | - Wenqi Wu
- Key Laboratory of Textile Fiber and Products (Ministry of Education), School of Materials Science and Engineering Wuhan Textile University Wuhan People's Republic of China
| | - Xianglin Pei
- School of Materials and Architectural Engineering, Guizhou Normal University Guiyang People's Republic of China
| | - Junyang Tu
- Key Laboratory of Textile Fiber and Products (Ministry of Education), School of Materials Science and Engineering Wuhan Textile University Wuhan People's Republic of China
| | - Weijie Zhou
- Key Laboratory of Textile Fiber and Products (Ministry of Education), School of Materials Science and Engineering Wuhan Textile University Wuhan People's Republic of China
| | - Ming Jiang
- Key Laboratory of Textile Fiber and Products (Ministry of Education), School of Materials Science and Engineering Wuhan Textile University Wuhan People's Republic of China
| | - Wei Gong
- School of Materials and Architectural Engineering, Guizhou Normal University Guiyang People's Republic of China
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18
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Zhang L, Long S, Jiao H, Liu Z, Zhang P, Lei A, Gong W, Pei X. Cellulose derived Pd nano-catalyst for efficient catalysis. RSC Adv 2022; 12:18676-18684. [PMID: 35873326 PMCID: PMC9231465 DOI: 10.1039/d2ra02799b] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Accepted: 06/16/2022] [Indexed: 11/21/2022] Open
Abstract
We report a C–Pd catalyst derived from a renewable cellulose resource that exhibited excellent catalytic activity and reusability in the Suzuki–Miyaura coupling reaction.
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Affiliation(s)
- Lingyu Zhang
- School of Materials and Architectural Engineering, Guizhou Normal University, Guiyang 550025, China
| | - Siyu Long
- School of Materials and Architectural Engineering, Guizhou Normal University, Guiyang 550025, China
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Huibin Jiao
- School of Materials Science and Engineering, Guizhou Minzu University, Guiyang 550025, China
| | - Zhuoyue Liu
- School of Materials and Architectural Engineering, Guizhou Normal University, Guiyang 550025, China
| | - Ping Zhang
- School of Materials and Architectural Engineering, Guizhou Normal University, Guiyang 550025, China
| | - Aiwen Lei
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Wei Gong
- School of Materials and Architectural Engineering, Guizhou Normal University, Guiyang 550025, China
| | - Xianglin Pei
- School of Materials and Architectural Engineering, Guizhou Normal University, Guiyang 550025, China
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
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19
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Yang Q, Mao Y, Wang J, Yu H, Zhang X, Pei X, Duan Z, Xiao C, Ma M. Gestational bisphenol A exposure impairs hepatic lipid metabolism by altering mTOR/CRTC2/SREBP1 in male rat offspring. Hum Exp Toxicol 2022; 41:9603271221129852. [PMID: 36137816 DOI: 10.1177/09603271221129852] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Lipid metabolism is an important biochemical process in the body. Recent studies have found that environmental endocrine disruptors play an important role in the regulation of lipid metabolism. Bisphenol A (BPA), a common environmental endocrine disruptor, has adverse effects on lipid metabolism, but the mechanism is still unclear. This study aimed to investigate the effects of gestational BPA exposure on hepatic lipid metabolism and its possible mechanism in male offspring. The pregnant Sprague-Dawley rats were exposed to BPA (0, 0.05, 0.5, 5 mg/kg/day) from day 5 to day 19 of gestation to investigate the levels of triglyceride (TG) and total cholesterol (TC), and the expression of liver lipid metabolism-related genes in male offspring rats. The results showed that compared with the control group, the TG and TC levels in serum and liver in BPA-exposed groups was increased. And the expressions of liver fatty acid oxidation related genes, such as peroxisome proliferators-activated receptor α (PPARα) and carnitine palmitoyl transferase 1α (CPT1α), were down-regulated. However, the expressions of fatty acid synthesis related genes, such as sterol regulatory element binding proteins 1 (SREBP-1), acetyl-CoA carboxylase 1 (ACC1), fatty acid synthase (FAS) and stearoyl-CoA desaturase 1 (SCD-1), were up-regulated. The increased protein levels of mTOR and p-CRTC2 suggested that CREB-regulated transcription coactivator 2 (CRTC2) might be an important mediator in the mTOR/SREBP-1 pathway. In conclusion, these results demonstrated that mTOR/CRTC2/SREBP-1 could be affected by gestational BPA exposure, which may involve in the lipid metabolic disorders in later life.
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Affiliation(s)
- Q Yang
- Department of Toxicology, School of Public Heath, 70577Shenyang Medical College, Shenyang, China
| | - Y Mao
- Department of Toxicology, School of Public Heath, 70577Shenyang Medical College, Shenyang, China
| | - J Wang
- Department of Toxicology, School of Public Heath, 70577Shenyang Medical College, Shenyang, China
| | - H Yu
- Department of Toxicology, School of Public Heath, 70577Shenyang Medical College, Shenyang, China
| | - X Zhang
- Department of Toxicology, School of Public Heath, 70577Shenyang Medical College, Shenyang, China
| | - X Pei
- Department of Toxicology, School of Public Heath, 70577Shenyang Medical College, Shenyang, China
| | - Z Duan
- Department of Toxicology, School of Public Heath, 70577Shenyang Medical College, Shenyang, China
| | - C Xiao
- Department of Key Laboratory of Environmental Pollution and Microecology, 70577Shenyang Medical College, Shenyang, China
| | - M Ma
- Department of Toxicology, School of Public Heath, 70577Shenyang Medical College, Shenyang, China.,Department of Key Laboratory of Environmental Pollution and Microecology, 70577Shenyang Medical College, Shenyang, China
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20
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Pei X, Li Y, Lu L, Jiao H, Gong W, Zhang L. Highly Dispersed Pd Clusters Anchored on Nanoporous Cellulose Microspheres as a Highly Efficient Catalyst for the Suzuki Coupling Reaction. ACS Appl Mater Interfaces 2021; 13:44418-44426. [PMID: 34495649 DOI: 10.1021/acsami.1c12850] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
With the depletion of nonrenewable resources such as oil/coal/gas, more and more research studies began to focus on the high-value utilization of residual biomass resources. Herein, for the first time, honeycomb nanoporous microspheres fabricated from renewable biomass resources of cellulose were used as a carrier to fabricate a highly dispersed palladium (Pd) nanocatalyst. Various physicochemical characterizations presented convincing pieces of evidence for the good dispersion of Pd clusters with a mean diameter of 1.6 nm. As the carrier, cellulose microspheres with an interconnected nanoporous structure contributed to the adhesion and dispersion of Pd particles, and their rich hydroxyl groups could fix the Pd particles. Importantly, the cellulose matrix could in situ induce the formation of metallic Pd(0) during calcination without a reductant. The cellulose/Pd catalyst was applied to the Suzuki coupling reaction, which exhibited promising catalytic activity compared to commercial Pd/C and unsupported homogeneous Pd(OAc)2 catalysts, as well as good stability. The utilization of the residual biomass resource to build catalyst materials would be important for the sustainable chemistry.
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Affiliation(s)
- Xianglin Pei
- School of Materials and Architectural Engineering, Guizhou Normal University, Guiyang 550025, China
| | - Yan Li
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Lijun Lu
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Huibin Jiao
- School of Materials and Architectural Engineering, Guizhou Normal University, Guiyang 550025, China
| | - Wei Gong
- School of Materials and Architectural Engineering, Guizhou Normal University, Guiyang 550025, China
| | - Lina Zhang
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
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21
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Luo D, Pei X, Fu H, Yang X, Long S, Zhang L, Gong W. Modification of sodium bicarbonate and its effect on foaming behavior of polypropylene. e-Polymers 2021. [DOI: 10.1515/epoly-2021-0032] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
As a potential physical blowing agent, sodium bicarbonate (SB) is environmentally friendly and low in cost, but its low decomposition temperature cannot meet the requirements of polyolefin foam materials. Herein, for enhancing the thermal properties of SB, a modified way was offered to fabricate various SB-based capsules via suspension polymerization. As the modified SB-based capsules, epoxy resin (EP) accompanied with several organic acids was successfully coated on the surface of SB, serving as heat-insulation layer of SB. Various physicochemical characterizations provided reliable evidences for the good coating effect, and the thermal performance of the modified SB was improved. Further, the composite SB capsules were applied for the foaming of polypropylene (PP), and the foaming behavior of the SB-based capsules in PP was significantly improved, with more uniform distribution, smaller cell diameter, and higher cell density. In all, this work fully proved that the coated shells enhanced the thermal properties of SB, and the modified SB capsules significantly improved the foaming quality of foamed PP.
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Affiliation(s)
- Dan Luo
- School of Materials and Architectural Engineering, Guizhou Normal University , Guiyang 550025 , China
- Guizhou Functional Polymer Materials Science and Technology Innovation Talent Team , Guiyang 550025 , China
| | - Xianglin Pei
- School of Materials and Architectural Engineering, Guizhou Normal University , Guiyang 550025 , China
- Guizhou Functional Polymer Materials Science and Technology Innovation Talent Team , Guiyang 550025 , China
| | - Hai Fu
- School of Materials and Architectural Engineering, Guizhou Normal University , Guiyang 550025 , China
- Guizhou Functional Polymer Materials Science and Technology Innovation Talent Team , Guiyang 550025 , China
| | - Xin Yang
- School of Materials and Architectural Engineering, Guizhou Normal University , Guiyang 550025 , China
| | - Siyu Long
- School of Materials and Architectural Engineering, Guizhou Normal University , Guiyang 550025 , China
| | - Linyu Zhang
- School of Materials and Architectural Engineering, Guizhou Normal University , Guiyang 550025 , China
| | - Wei Gong
- School of Materials and Architectural Engineering, Guizhou Normal University , Guiyang 550025 , China
- Guizhou Functional Polymer Materials Science and Technology Innovation Talent Team , Guiyang 550025 , China
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22
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Pei X, Li Y, Deng Y, Lu L, Li W, Shi R, Lei A, Zhang L. Chitin microsphere supported Pd nanoparticles as an efficient and recoverable catalyst for CO oxidation and Heck coupling reaction. Carbohydr Polym 2021; 251:117020. [PMID: 33142581 DOI: 10.1016/j.carbpol.2020.117020] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Revised: 08/08/2020] [Accepted: 08/28/2020] [Indexed: 10/23/2022]
Abstract
Chitin derived from seafood wastes is a sustainable biopolymer, which can be used to constructe new materials to reduce the environmental pollution caused by non-biodegradable plastics. Herein, nanofibrous microspheres fabricated from chitin solution were used as carriers to construct three different chitin-supported Pd catalysts through diverse activation methods, subsequently revealed their differences in structure and performance. The palladium nanoparticles were firmly and highly dispersed on the microspheres due to the interconnected nanofibrous networks and functional groups of chitin, confirmed by various physicochemical characterizations. As the best candidate catalyst of Pd/chitin-Ar, in the CO oxidation reaction, which achieved 100% CO conversion with a lower Pd content, and exhibited excellent stability in 24-hours cycle reaction. Importantly, the catalyst was further applied in Heck coupling reaction, which also displayed competitive catalytic activity and stability (∼6runs, 94%). This utilizing of biomass resource to build catalyst materials would be important for the sustainable chemistry.
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Affiliation(s)
- Xianglin Pei
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China; College of Chemistry and Chemical Engineering, Gannan Normal University, Ganzhou 341000, China
| | - Yan Li
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Yi Deng
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Lijun Lu
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Wendian Li
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Renyi Shi
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Aiwen Lei
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China.
| | - Lina Zhang
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China.
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23
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Pei X, Jiao H, Fu H, Yin X, Luo D, Long S, Gong W, Zhang L. Facile Construction of a Highly Dispersed Pt Nanocatalyst Anchored on Biomass-Derived N/O-Doped Carbon Nanofibrous Microspheres and Its Catalytic Hydrogenation. ACS Appl Mater Interfaces 2020; 12:51459-51467. [PMID: 33147002 DOI: 10.1021/acsami.0c14581] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [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: 06/11/2023]
Abstract
With the depletion of nonrenewable resources and the increasingly serious "white pollution" caused by nondegradable plastics, using renewable biomass resources such as chitin to fabricate materials is a green and sustainable pathway. Herein, for the first time, we used N/O-doped carbon nanofibrous microspheres (CNMs) derived from renewable chitin as carriers to successfully construct a highly dispersed platinum nanocatalyst via a facile way. Various physicochemical characterizations provided reliable evidence for the ultrafine and well-dispersed platinum nanoparticles with an average diameter of 2.3 nm. As the supporting framework, the CNM with interconnected nanofibrous networks and a large surface area facilitated the adhesion and dispersion of Pt particles. Meanwhile, the inherent N/O-containing functional groups and the defects in carbonized chitin could anchor the platinum tightly. The CNM/Pt catalyst was further examined for hydrogenation, and it exhibited promising catalytic activity and stability (∼5 runs, 91%) and a broad applicability. This utilization of biomass resources to build catalyst materials would be important for the green and sustainable chemistry.
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Affiliation(s)
- Xianglin Pei
- School of Materials and Architectural Engineering, Guizhou Normal University, Guiyang 550025, China
| | - Huibin Jiao
- School of Materials and Architectural Engineering, Guizhou Normal University, Guiyang 550025, China
| | - Hai Fu
- School of Materials and Architectural Engineering, Guizhou Normal University, Guiyang 550025, China
| | - Xiaogang Yin
- School of Materials and Architectural Engineering, Guizhou Normal University, Guiyang 550025, China
| | - Dan Luo
- School of Materials and Architectural Engineering, Guizhou Normal University, Guiyang 550025, China
| | - Siyu Long
- School of Materials and Architectural Engineering, Guizhou Normal University, Guiyang 550025, China
| | - Wei Gong
- School of Materials and Architectural Engineering, Guizhou Normal University, Guiyang 550025, China
| | - Lina Zhang
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
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24
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Gong W, Pei X, Yin X, Ban D, Fu H, He L. Synthesis of high-temperature thermally expandable microcapsules and their effects on foaming quality and surface quality of foamed ABS materials. e-Polymers 2020. [DOI: 10.1515/epoly-2020-0021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractIn this paper, acrylonitrile and hydroxypropyl acrylate are used as the binary polymerization monomers, and isooctane is used as the foaming agent to prepare high-temperature thermally expandable microcapsules. Analysis of the effect of blowing agent and crosslinking agent on the expansion properties of high-temperature thermally expandable microcapsules, the effects of foaming agent azodicarbonamide (ADCA) and micro-expansion capsule on the surface quality and foaming quality of foamed acrylonitrile–butadiene–styrene (ABS) products were investigated. The foamed product prepared by the high-temperature microcapsule has a good surface quality, the gloss is 52.3, the cell is not easily deformed, and the volume fraction is 4%; the foamed ABS/ADCA material has poor cell uniformity, the cell is easily deformed, the volume fraction is 6.5%, the surface quality is poor, and the gloss is only 8.7.
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Affiliation(s)
- Wei Gong
- School of Material and Architectural Engineering, Guizhou Normal University, Guizhou, Guiyang 550025, China
- National Engineer Research Center for Compounding and Modification Polymeric Material, Guizhou, Guiyang 550014, China
- The Institute of Materials and Construction of Guizhou Normal University, Guiyang, Guizhou, China
| | - Xianglin Pei
- School of Material and Architectural Engineering, Guizhou Normal University, Guizhou, Guiyang 550025, China
| | - Xiaogang Yin
- School of Material and Architectural Engineering, Guizhou Normal University, Guizhou, Guiyang 550025, China
| | - Daming Ban
- School of Material and Architectural Engineering, Guizhou Normal University, Guizhou, Guiyang 550025, China
| | - Hai Fu
- School of Material and Architectural Engineering, Guizhou Normal University, Guizhou, Guiyang 550025, China
| | - Li He
- National Engineer Research Center for Compounding and Modification Polymeric Material, Guizhou, Guiyang 550014, China
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25
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Riaz N, Sherman E, Pei X, Schoder H, Paudyal R, Katabi N, Ma D, Tsai C, McBride S, Morris L, Boyle J, Singh B, Foote R, Ho A, Wong R, Humm J, Dave A, Pfister D, Reis-Filho J, Lee N. Genetic and micro-environmental factors influencing response to definitive 30Gy chemo-radiotherapy (chemoRT) in HPV Positive Oropharyngeal Cancer (OPC). Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2019.11.197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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26
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Pei X, Liu L, Cai Y, Peng Y, Ma C, Jin Y, Ping Z. Body mass index cut-off points for predicting chronic non-communicable disease should differ by gender and age group. Public Health 2019; 175:54-59. [PMID: 31398517 DOI: 10.1016/j.puhe.2019.06.018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2019] [Revised: 04/15/2019] [Accepted: 06/26/2019] [Indexed: 11/30/2022]
Abstract
OBJECTIVES The objective of this study to determine whether body mass index (BMI) in different genders and age groups need different thresholds when predicting chronic non-communicable diseases (CNCDs). STUDY DESIGN This is a cross-sectional study. METHODS Data were obtained from the China Health and Nutrition Survey conducted in 2009. Sequential sample cluster analysis was used to group age according to BMI. Propensity score matching was used to eliminate the influence of age. Receiver operating characteristic curve based on gender and age group was used to evaluate the cut-off values and efficiency of BMI in each group. RESULTS A total of 8469 individuals were enrolled in this study. Results of sequential sample cluster analyses showed age was divided into three groups: 18-39, 40-59 and 60-99 years. There were significant differences in the distribution of BMI among the three groups for both males and females (P < 0.001). Statistical differences were observed in the distribution of BMI between genders in the 18-39- and 60-99-year-old age groups (P < 0.001). For men, the cut-off values of BMI were ≥25 kg/m2, ≥24 kg/m2 and ≥23 kg/m2 in the 18-39, 40-59 and 60-99 years old groups, respectively; for women, the corresponding cut-off points were ≥25 kg/m2, ≥23 kg/m2 and ≥25 kg/m2 in groups. CONCLUSIONS The thresholds for BMI might be different between gender and age group. In addition, it might not be suitable to determine cut-off values of BMI to predict CNCDs for people aged ≥60 years.
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Affiliation(s)
- X Pei
- College of Public Health, Zhengzhou University, Zhengzhou, China; Henan Provincial People's Hospital and People's Hospital of Zhengzhou University, Henan Eye Institute, Henan Eye Hospital, Zhengzhou, China
| | - L Liu
- School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, China
| | - Y Cai
- College of Public Health, Zhengzhou University, Zhengzhou, China
| | - Y Peng
- School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, China
| | - C Ma
- School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, China
| | - Y Jin
- School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, China
| | - Z Ping
- College of Public Health, Zhengzhou University, Zhengzhou, China.
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Wang G, Liu L, Tao W, Xiao Z, Pei X, Liu B, Wang M, Lin G, Ao T. Effects of replacing inorganic trace minerals with organic trace minerals on the production performance, blood profiles, and antioxidant status of broiler breeders. Poult Sci 2019; 98:2888-2895. [DOI: 10.3382/ps/pez035] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Accepted: 01/23/2019] [Indexed: 01/22/2023] Open
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Ashley C, Paula A, Kumar R, Mandelker D, Pei X, Riaz N, Reis-Filho J, Weigelt B. Mutational signature analysis of primary and metastatic endometrial cancer reveals associations with molecular subtypes and shifts during tumor progression. Gynecol Oncol 2019. [DOI: 10.1016/j.ygyno.2019.04.113] [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: 11/25/2022]
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29
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Smith E, Paula A, Cadoo K, Abu-Rustum N, Pei X, Riaz N, Robson M, Reis-Filho J, Mandelker D, Weigelt B. Endometrial cancers in or germline mutations carriers. Gynecol Oncol 2019. [DOI: 10.1016/j.ygyno.2019.04.154] [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: 11/24/2022]
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30
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Li X, Zong Q, Ren R, Zhang Y, Tan L, Li T, Pei X, Zhou J, Tang X. Effect of Altitude on Apnea Hypopnea Index and Heart Rate Variability During Sleep in Healthy Subjects. B65. SRN: DIAGNOSIS AND MONITORING OF SLEEP AND SLEEP DISORDERS 2019. [DOI: 10.1164/ajrccm-conference.2019.199.1_meetingabstracts.a3891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- X. Li
- Sleep Medicine Center, West China Hospital,, Chengdu, China
| | - Q. Zong
- Department of Orthopedics and Trauma, Yantai Affiliated Hospital of Binzhou Medical University, Yantai, China
| | - R. Ren
- Sleep Medicine Center, West China Hospital,, Chengdu, China
| | - Y. Zhang
- Sleep Medicine Center, West China Hospital,, Chengdu, China
| | - L. Tan
- Sleep Medicine Center, West China Hospital,, Chengdu, China
| | - T. Li
- Sleep Medicine Center, West China Hospital,, Chengdu, China
| | - X. Pei
- Sleep Medicine Center, West China Hospital,, Chengdu, China
| | - J. Zhou
- Sleep Medicine Center, West China Hospital,, Chengdu, China
| | - X. Tang
- Sleep Medicine Center, West China Hospital,, Chengdu, China
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Pei X, Fan X, Zhang H, Duan H, Xu C, Xie B, Wang L, Li X, Peng Y, Shen T. Low frequency, weak MCP-1 secretion and exhausted immune status of peripheral monocytes were associated with progression of severe enterovirus A71-infected hand, foot and mouth disease. Clin Exp Immunol 2019; 196:353-363. [PMID: 30697697 DOI: 10.1111/cei.13267] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/14/2019] [Indexed: 11/29/2022] Open
Abstract
A minority of hand, foot and mouth disease (HFMD) caused by enterovirus A71 (EV-A71) results in severe neural complications. However, whether monocyte-mediated immunity is involved in the disease progression of HFMD remains unknown. One hundred and twenty mild and 103 severe HFMD patients were recruited and enzyme-linked immunosorbent assay (ELISA), flow cytometry and Transwell culture were performed in the study. Peripheral monocyte counts were lower in both absolute counts and frequencies in severe cases compared to mild cases. After screening 10 monocyte-related cytokines by ELISA, only monocyte chemoattractant protein-1 (MCP-1) was found at higher levels in sera of mild cases compared to those with severe symptoms. Monocytes purified from mild cases produced more MCP-1 than the cells from severe patients when stimulated in vitro. We observed that immune exhaustion markers programmed death 1 (PD-1) and programmed death ligand 1 (PD-L1) were highly regulated on the surface of monocytes from severe cases compared to mild cases. PD-L1 blockade induced a higher production of MCP-1 in the supernatant of a Transwell system. The production of MCP-1 also increased following PD-L1 blockade of purified monocytes activated by granulocyte-macrophage colony-stimulating factor (GM-CSF) combined with R848 or EV-A71 virus. Our results indicate that absolute count, frequency and levels of MCP-1 secretion of peripheral monocytes, together with their immune status, probably contribute to differential disease prognosis in EV-A71-associated HFMD.
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Affiliation(s)
- X Pei
- Department of Microbiology and Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China
| | - X Fan
- Department of Microbiology and Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China.,Center of Laboratory Medicine, Beijing Children Hospital, Beijing, China
| | - H Zhang
- Department of Microbiology and Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China
| | - H Duan
- Department of Microbiology and Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China
| | - C Xu
- Department of Microbiology and Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China
| | - B Xie
- Department of Microbiology and Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China
| | - L Wang
- National Clinical Key Department of Infectious Disease, Beijing Ditan Hospital, Capital Medical University, Beijing, China
| | - X Li
- National Clinical Key Department of Infectious Disease, Beijing Ditan Hospital, Capital Medical University, Beijing, China
| | - Y Peng
- Department of Microbiology and Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China
| | - T Shen
- Department of Microbiology and Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China
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Kumar R, Pei X, Selenica P, Wen HY, Powell S, Robson M, Riaz N, Reis-Filho JS, Weigelt B, Mandelker D. Abstract P4-04-01: The landscape of somatic genetic alterations in breast cancers from CHEK2 germline mutation carriers. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-p4-04-01] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Introduction: Checkpoint kinase 2 (CHEK2) is a tumor suppressor gene, which regulates cell cycle in response to DNA damage response. Selected CHEK2 germline mutations have been shown to confer an increased risk of breast cancer development. Multiple founder mutations in CHEK2 have been identified, and meta analyses have shown that CHEK2 truncating variants confer a higher breast cancer risk than missense variants. Here, we assessed the phenotype and repertoire of genetic alterations of breast cancers from 33 patients with CHEK2 pathogenic germline variants.
Materials and methods: We performed targeted capture massively parallel sequencing (≥410 genes) of tumor and normal samples from 13 patients with CHEK2 pathogenic germline variants, and retrieved whole exome sequencing (WES) data (BAM files) of tumor and normal samples from 20 patients with CHEK2 germline pathogenic variants included in the TCGA breast cancer study. In addition, we retrieved WES data of BRCA1, BRCA2 and ATM associated breast cancers from TCGA and Weigelt et al. (JNCI 2018). Somatic mutations, copy number alterations, mutational signatures and large-scale transitions (LSTs) were defined using state-of-the-art bioinformatics algorithms.
Results: Of the 33 CHEK2-associated breast cancers included in this study, 21 had missense and 12 had loss-of-function (LoF) germline mutations, and 81% were ER-positive and 12% HER2-positive. CHEK2-associated breast cancers statistically significantly less frequently displayed an ER-negative/HER2-negative phenotype (0%) than BRCA1- (80%) or BRCA2-associated (33%) breast cancers (BRCA1, p<0.0001 for both comparisons), but were similar to ATM-associated breast cancers. Biallelic inactivation of CHEK2 through loss of heterozygosity (LOH) of the wild-type allele was present in 17 of 33 samples (52%). LOH of the CHEK2 wild-type allele was significantly more frequent in tumors with LOF mutations than in those with missense mutations (78% vs 36%, respectively; p=0.0394). PIK3CA (36%) and GATA3 (33%) were the two most recurrently mutated genes in these samples. TP53 somatic mutations were detected in five cases, four of which harbored missense CHEK2 germline mutations. Unlike BRCA1- and BRCA2-associated breast cancers, but akin to ATM-associated breast cancers, CHEK2-associated breast cancers lacked the mutational signature associated with homologous recombination (HR) DNA repair defects (i.e. signature 3) and only five cases displayed high LST scores.
Conclusion:CHEK2-associated breast cancers are phenotypically and genetically distinct from BRCA1- and BRCA2-associated breast cancers, but similar to ATM-associated breast cancers. Akin to ATM-associated breast cancers, CHEK2-associated breast cancers are preferentially ER-positive, lack genomics features consistent with defective HR, and have a repertoire of somatic genetic alterations similar to those of non-BRCA1/2 ER-positive breast cancers. Our results suggest that either CHEK2 germline mutations contribute to an increased risk of breast cancer independently of the HR DNA repair defects or that the mutational signatures caused by CHEK2 pathogenic germline mutations differ from those caused by pathogenic germline mutations affecting bona fide HR-related genes (e.g. BRCA1, BRCA2 and PALB2).
Citation Format: Kumar R, Pei X, Selenica P, Wen HY, Powell S, Robson M, Riaz N, Reis-Filho JS, Weigelt B, Mandelker D. The landscape of somatic genetic alterations in breast cancers from CHEK2 germline mutation carriers [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 P4-04-01.
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Affiliation(s)
- R Kumar
- Memorial Sloan Kettering Cancer Center, New York, NY
| | - X Pei
- Memorial Sloan Kettering Cancer Center, New York, NY
| | - P Selenica
- Memorial Sloan Kettering Cancer Center, New York, NY
| | - HY Wen
- Memorial Sloan Kettering Cancer Center, New York, NY
| | - S Powell
- Memorial Sloan Kettering Cancer Center, New York, NY
| | - M Robson
- Memorial Sloan Kettering Cancer Center, New York, NY
| | - N Riaz
- Memorial Sloan Kettering Cancer Center, New York, NY
| | - JS Reis-Filho
- Memorial Sloan Kettering Cancer Center, New York, NY
| | - B Weigelt
- Memorial Sloan Kettering Cancer Center, New York, NY
| | - D Mandelker
- Memorial Sloan Kettering Cancer Center, New York, NY
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Fu H, Gong W, Chen B, Chen Y, Ban D, Yin X, Pei X, He L. Influence of electrolytes on thermal expansion microcapsules. Journal of Macromolecular Science, Part A 2019. [DOI: 10.1080/10601325.2018.1549948] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Hai Fu
- College of Materials and Metallurgy, Guizhou University, Guiyang, China
- National Engineering Research Center for Compounding and Modification of Polymeric Materials, Guiyang, China
- College of Materials and Architectural Engineering, Guizhou Normal University, Guiyang, China
| | - Wei Gong
- College of Materials and Metallurgy, Guizhou University, Guiyang, China
- National Engineering Research Center for Compounding and Modification of Polymeric Materials, Guiyang, China
- College of Materials and Architectural Engineering, Guizhou Normal University, Guiyang, China
| | - Binbin Chen
- College of Materials and Metallurgy, Guizhou University, Guiyang, China
- National Engineering Research Center for Compounding and Modification of Polymeric Materials, Guiyang, China
| | - Yuxing Chen
- College of Materials and Architectural Engineering, Guizhou Normal University, Guiyang, China
| | - Daming Ban
- College of Materials and Architectural Engineering, Guizhou Normal University, Guiyang, China
| | - Xiaogang Yin
- College of Materials and Architectural Engineering, Guizhou Normal University, Guiyang, China
| | - Xianglin Pei
- College of Materials and Architectural Engineering, Guizhou Normal University, Guiyang, China
| | - Li He
- College of Materials and Metallurgy, Guizhou University, Guiyang, China
- National Engineering Research Center for Compounding and Modification of Polymeric Materials, Guiyang, China
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Gong W, Fu H, Zhang C, Ban D, Yin X, He Y, He L, Pei X. Study on Foaming Quality and Impact Property of Foamed Polypropylene Composites. Polymers (Basel) 2018; 10:E1375. [PMID: 30961300 PMCID: PMC6401948 DOI: 10.3390/polym10121375] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Revised: 12/06/2018] [Accepted: 12/07/2018] [Indexed: 11/16/2022] Open
Abstract
In the present work, foamed polypropylene (PP) composites were prepared by chemical foaming technology, and the foaming quality and impact property of the foamed PP composites were studied. The results showed that the foaming quality was significantly improved after the introduction of thermoplastic rubber (TPR) and polyolefin elastomer (POE). Meanwhile, it was found that the impact property depended on the intrinsic toughness and contribution of foams (cells) to the PP composites. Furthermore, the data regarding impact property in low temperature showed that when the temperature was between -80 and -20 °C, the impact properties of the foamed PP composites were higher than that of the unfoamed sample, which was due to the impact property being completely contributed by cells under this condition. Meanwhile, when the temperature ranged from -20 to 20 °C, the impact property of the unfoamed sample was higher, which was due to the PP matrix contributing more to the impact property under this temperature. This work significantly improved the foaming quality of foamed PP composites and provided reliable evidence for the improvement of impact property.
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Affiliation(s)
- Wei Gong
- College of Materials and Architectural Engineering, Guizhou Normal University, Guiyang 550025, China.
- National Engineering Research Center for Compounding and Modification of Polymeric Materials, Guiyang 550014, China.
| | - Hai Fu
- College of Materials and Architectural Engineering, Guizhou Normal University, Guiyang 550025, China.
| | - Chun Zhang
- National Engineering Research Center for Compounding and Modification of Polymeric Materials, Guiyang 550014, China.
| | - Daming Ban
- College of Materials and Architectural Engineering, Guizhou Normal University, Guiyang 550025, China.
| | - Xiaogang Yin
- College of Materials and Architectural Engineering, Guizhou Normal University, Guiyang 550025, China.
| | - Yue He
- College of Materials and Architectural Engineering, Guizhou Normal University, Guiyang 550025, China.
| | - Li He
- National Engineering Research Center for Compounding and Modification of Polymeric Materials, Guiyang 550014, China.
| | - Xianglin Pei
- College of Materials and Architectural Engineering, Guizhou Normal University, Guiyang 550025, China.
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Xiao Z, Liu L, Tao W, Pei X, Wang G, Wang M. 334 Clostridium tyrobutyricum protect intestinal barrier function from LPS-induced apoptosis via p38/JNK signaling pathway in IPEC-J2. J Anim Sci 2018. [DOI: 10.1093/jas/sky404.364] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Z Xiao
- College of Animal Science. Zhejiang University,Hangzhou, Zhejiang, China (People’s Republic)
| | - L Liu
- College of Animal Science. Zhejiang University,Hangzhou, Zhejiang, China (People’s Republic)
| | - W Tao
- College of Animal Science. Zhejiang University,Hangzhou, Zhejiang, China (People’s Republic)
| | - X Pei
- College of Animal Science. Zhejiang University,Hangzhou, Zhejiang, China (People’s Republic)
| | - G Wang
- College of Animal Science. Zhejiang University,Hangzhou, Zhejiang, China (People’s Republic)
| | - M Wang
- College of Animal Science. Zhejiang University,Hangzhou, Zhejiang, China (People’s Republic)
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Lu L, Pei X, Mei Y, Deng Y, Zhang H, Zhang L, Lei A. Carbon Nanofibrous Microspheres Promote the Oxidative Double Carbonylation of Alkanes with CO. Chem 2018. [DOI: 10.1016/j.chempr.2018.09.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Pei X, Deng Y, Li Y, Huang Y, Yuan K, Lee JF, Chan TS, Zhou J, Lei A, Zhang L. Size-controllable ultrafine palladium nanoparticles immobilized on calcined chitin microspheres as efficient and recyclable catalysts for hydrogenation. Nanoscale 2018; 10:14719-14725. [PMID: 30043036 DOI: 10.1039/c8nr03215g] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
In the present work, chitin microspheres were impregnated at different concentrations of palladium salt solution to generate the precursor-Pd2+/chitin, and then a series of size-controllable palladium nanocatalysts (Pd@chitin) were successfully constructed by calcining the composite microspheres. Transmission electron microscopy (TEM) and X-ray absorption spectroscopy (XAS) provided reliable evidence for well-dispersed and ultrafine palladium nanoparticles (Pd NPs) with mean diameters from about 1 to 3 nm. Chitin microspheres, as the supporting framework of these catalysts, played a significant role for stabilizing the highly dispersed Pd NPs based on their abundant functional groups and large surface areas. Moreover, the chitin matrix acted as a reductant for the precursor-Pd2+ during calcination, and the calcination process made Pd@chitin more stable. These Pd@chitin catalysts were further tested for the hydrogenations of styrene and benzaldehyde, and they displayed superior catalytic activities compared to commercial Pd/C and unsupported homogeneous Pd(OAc)2 catalysts. Notably, the most active catalyst of 1.2 wt% Pd@chitin had a highly competitive turnover frequency (TOF) of 50 000 h-1 in the hydrogenation of styrene, and the catalyst could be repeatedly used for more than 10 cycles with no decay of the catalytic activity, suggesting potential industrial applications.
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Affiliation(s)
- Xianglin Pei
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China.
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Yang Y, Pei X, Yang M. Combination of apatinib and continuous nutritional support for a gastric cancer patient with brain metastasis prolongs survival. J Clin Pharm Ther 2018; 43:726-729. [PMID: 29777533 DOI: 10.1111/jcpt.12708] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2018] [Accepted: 04/17/2018] [Indexed: 12/23/2022]
Abstract
WHAT IS KNOWN AND OBJECTIVES Gastric cancer is the most common gastrointestinal malignant tumour in China, which rarely metastasizes into the central nervous system. However, brain metastasis leads to increased risk of death. CASE SUMMARY Here, we report a case of brain metastasis from gastric cancer, which was treated with apatinib and continual nutritional support, with a survival time of 2 years. WHAT IS NEW AND CONCLUSION The combination of apatinib and continual nutritional support may be an option for the treatment of brain metastasis from gastric cancer. A prospective study should be performed to confirm this.
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Affiliation(s)
- Y Yang
- Kunming Medical University, Yunnan, China.,Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Yunnan, China
| | - X Pei
- Department of Oncology, Lanzhou University Second Hospital, Gansu, China
| | - M Yang
- Department of Gastroenterology, Tianshui Qinzhou People's Hospital, Gansu, China
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Yuan X, Pei X, Zhao Y, Li Z, Chen CH, Tulu US, Liu B, Van Brunt LA, Brunski JB, Helms JA. Biomechanics of Immediate Postextraction Implant Osseointegration. J Dent Res 2018; 97:987-994. [PMID: 29608868 DOI: 10.1177/0022034518765757] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
The aim of this study was to gain insights into the biology and mechanics of immediate postextraction implant osseointegration. To mimic clinical practice, murine first molar extraction was followed by osteotomy site preparation, specifically in the palatal root socket. The osteotomy was positioned such that it removed periodontal ligament (PDL) only on the palatal aspect of the socket, leaving the buccal aspect undisturbed. This strategy created 2 distinct peri-implant environments: on the palatal aspect, the implant was in direct contact with bone, while on the buccal aspect, a PDL-filled gap existed between the implant and bone. Finite element modeling showed high strains on the palatal aspect, where bone was compressed by the implant. Osteocyte death and bone resorption predominated on the palatal aspect, leading to the loss of peri-implant bone. On the buccal aspect, where finite element modeling revealed low strains, there was minimal osteocyte death and robust peri-implant bone formation. Initially, the buccal aspect was filled with PDL remnants, which we found directly provided Wnt-responsive cells that were responsible for new bone formation and osseointegration. On the palatal aspect, which was devoid of PDL and Wnt-responsive cells, adding exogenous liposomal WNT3A created an osteogenic environment for rapid peri-implant bone formation. Thus, we conclude that low strain and high Wnt signaling favor osseointegration of immediate postextraction implants. The PDL harbors Wnt-responsive cells that are inherently osteogenic, and if the PDL tissue is healthy, it is reasonable to preserve this tissue during immediate implant placement.
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Affiliation(s)
- X Yuan
- 1 Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford School of Medicine, Stanford, CA, USA
| | - X Pei
- 1 Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford School of Medicine, Stanford, CA, USA.,2 State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, Mainland China
| | - Y Zhao
- 1 Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford School of Medicine, Stanford, CA, USA.,3 Department of Oral Basic Science, School of Dentistry, Lanzhou University, Lanzhou, Mainland China
| | - Z Li
- 1 Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford School of Medicine, Stanford, CA, USA.,4 Department of Orthopedics, Tianjin Medical University General Hospital, Tianjin, Mainland China
| | - C H Chen
- 1 Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford School of Medicine, Stanford, CA, USA.,5 Craniofacial Research Center, Department of Plastic and Reconstructive Surgery, Chang Gung Memorial Hospital, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - U S Tulu
- 1 Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford School of Medicine, Stanford, CA, USA
| | - B Liu
- 6 Ankasa Regenerative Therapeutics, South San Francisco, CA, USA
| | - L A Van Brunt
- 1 Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford School of Medicine, Stanford, CA, USA
| | - J B Brunski
- 1 Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford School of Medicine, Stanford, CA, USA
| | - J A Helms
- 1 Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford School of Medicine, Stanford, CA, USA.,6 Ankasa Regenerative Therapeutics, South San Francisco, CA, USA
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Chen CH, Pei X, Tulu U, Aghvami M, Chen CT, Gaudillière D, Arioka M, Maghazeh Moghim M, Bahat O, Kolinski M, Crosby T, Felderhoff A, Brunski J, Helms J. A Comparative Assessment of Implant Site Viability in Humans and Rats. J Dent Res 2018; 97:451-459. [PMID: 29202640 PMCID: PMC5863872 DOI: 10.1177/0022034517742631] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Our long-term objective is to devise methods to improve osteotomy site preparation and, in doing so, facilitate implant osseointegration. As a first step in this process, we developed a standardized oral osteotomy model in ovariectomized rats. There were 2 unique features to this model: first, the rats exhibited an osteopenic phenotype, reminiscent of the bone health that has been reported for the average dental implant patient population. Second, osteotomies were produced in healed tooth extraction sites and therefore represented the placement of most implants in patients. Commercially available drills were then used to produce osteotomies in a patient cohort and in the rat model. Molecular, cellular, and histologic analyses demonstrated a close alignment between the responses of human and rodent alveolar bone to osteotomy site preparation. Most notably in both patients and rats, all drilling tools created a zone of dead and dying osteocytes around the osteotomy. In rat tissues, which could be collected at multiple time points after osteotomy, the fate of the dead alveolar bone was followed. Over the course of a week, osteoclast activity was responsible for resorbing the necrotic bone, which in turn stimulated the deposition of a new bone matrix by osteoblasts. Collectively, these analyses support the use of an ovariectomy surgery rat model to gain insights into the response of human bone to osteotomy site preparation. The data also suggest that reducing the zone of osteocyte death will improve osteotomy site viability, leading to faster new bone formation around implants.
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Affiliation(s)
- C.-H. Chen
- Craniofacial Research Center, Department of Plastic and Reconstructive Surgery, Chang Gung Memorial Hospital, Chang Gung University School of Medicine, Taoyuan, Taiwan
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA
| | - X. Pei
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - U.S. Tulu
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA
| | - M. Aghvami
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA
| | - C.-T. Chen
- Craniofacial Research Center, Department of Plastic and Reconstructive Surgery, Chang Gung Memorial Hospital, Chang Gung University School of Medicine, Taoyuan, Taiwan
- Department of Plastic and Reconstructive Surgery, Chang Gung Memorial Hospital at Keelung, Keelung, Taiwan
| | - D. Gaudillière
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA
| | - M. Arioka
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA
- Department of Clinical Pharmacology, Faculty of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - M. Maghazeh Moghim
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA
- University College London Medical School, University College London, London, UK
| | - O. Bahat
- Private practice, Beverly Hills, CA, USA
| | | | | | | | - J.B. Brunski
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA
| | - J.A. Helms
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA
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Yan Y, Chen S, Chen Z, Pei X, Zhou J, Xiao Y, Wang X. The applied value of medical history, physical examination, colour-Doppler ultrasonography and testis scintigraphy in the differential diagnosis of acute scrotum. Andrologia 2018; 50:e12973. [PMID: 29460432 DOI: 10.1111/and.12973] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/28/2017] [Indexed: 11/28/2022] Open
Abstract
Acute scrotum, especially testicular torsion, is a common surgical emergency. A delay in diagnosis or management may lead to permanent testicular ischaemic damage. Thus, it is particularly important to differentiate testicular torsion from other acute scrotum conditions as soon as possible. Our study has retrospectively investigated 358 patients with acute scrotum admitted to our hospital from the year 2007 to 2016. We have collected a thorough history and clinical data and drew the conclusion by comparing clinical features of different acute scrotum cases, medical history, imaging and surgical findings. Therefore, we propose an innovative "Testicular Torsion (TT) Green Channel" concept. Through the combination of a comprehensive medical history, physical examination and auxiliary colour-Doppler ultrasonography, the diagnosis of testicular torsion is definite in most circumstances. Testis scintigraphy is a novel and complementary diagnostic modality that can reduce the negative exploration rate in ambiguous and certain cases. The TT Green Channel is a new concept in the management of testicular torsion.
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Affiliation(s)
- Y Yan
- Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - S Chen
- Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Z Chen
- Department of Urology, Jingzhou Central Hospital, The Second Clinical College, Yangtze University, Jingzhou, China
| | - X Pei
- Department of Emergency, Jingzhou Central Hospital, The Second Clinical College, Yangtze University, Jingzhou, China
| | - J Zhou
- Department of Urology, Jingzhou Central Hospital, The Second Clinical College, Yangtze University, Jingzhou, China
| | - Y Xiao
- Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan, China
- Laboratory of Precision Medicine, Zhongnan Hospital of Wuhan University, Wuhan, China
- Department of Biological Repositories, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - X Wang
- Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan, China
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Abstract
Stem cells residing in the periodontal ligament (PDL) support the homeostasis of the periodontium, but their in vivo identity, source(s), and function(s) remain poorly understood. Here, using a lineage-tracing mouse strain, we identified a quiescent Wnt-responsive population in the PDL that became activated in response to tooth extraction. The Wnt-responsive population expanded by proliferation, then migrated from the PDL remnants that remained attached to bundle bone, into the socket. Once there, the Wnt-responsive progeny upregulated osteogenic protein expression, differentiated into osteoblasts, and generated the new bone that healed the socket. Using a liposomal WNT3A protein therapeutic, we showed that a single application at the time of extraction was sufficient to accelerate extraction socket healing 2-fold. Collectively, these data identify a new stem cell population in the intact periodontium that is directly responsible for alveolar bone healing after tooth removal.
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Affiliation(s)
- X Yuan
- 1 Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford School of Medicine, Stanford University, Stanford, CA, USA
| | - X Pei
- 1 Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford School of Medicine, Stanford University, Stanford, CA, USA.,2 State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Y Zhao
- 1 Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford School of Medicine, Stanford University, Stanford, CA, USA.,3 Department of Oral Basic Science, School of Dentistry, Lanzhou University, Lanzhou, China
| | - U S Tulu
- 1 Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford School of Medicine, Stanford University, Stanford, CA, USA
| | - B Liu
- 4 Ankasa Regenerative Therapeutics, South San Francisco, CA, USA
| | - J A Helms
- 1 Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford School of Medicine, Stanford University, Stanford, CA, USA
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Wang H, Ran L, Hui K, Pei X, Wang X, Zheng Y. The inhibitor of apoptosis protein livin is upregulated in psoriasis vulgaris. J Eur Acad Dermatol Venereol 2018; 32:e245-e247. [PMID: 29265512 DOI: 10.1111/jdv.14768] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- H. Wang
- Department of Dermatology; the Second Affiliated Hospital of Xi'an Jiaotong University; Xi'an China
| | - L. Ran
- Department of Dermatology and Venereology; Jingxi Campus; Beijing ChaoYang Hospital; Capital Medical University; Beijing China
| | - K. Hui
- Department of Urology; the First Affiliated Hospital of Xi'an Jiaotong University; Xi'an China
| | - X. Pei
- Department of Urology; the First Affiliated Hospital of Xi'an Jiaotong University; Xi'an China
| | - X. Wang
- Department of Urology; the First Affiliated Hospital of Xi'an Jiaotong University; Xi'an China
| | - Y. Zheng
- Department of Dermatology; the Second Affiliated Hospital of Xi'an Jiaotong University; Xi'an China
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Xian Y, Li B, Pan P, Wang Y, Pei X, Yang Y. Role of Autophagy in Ovarian Cryopreservation by Vitrification. Cryo Letters 2018; 39:201-210. [PMID: 30059567] [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: 06/08/2023]
Abstract
BACKGROUND Ovarian cryopreservation by vitrification and transplantation are useful methods to recover female fertility after radiotherapy and chemotherapy. As type II programmed cell death, autophagy plays important roles in ovarian follicle development, ovarian follicle atresia and anti-stress injury. OBJECTIVE The potential role of autophagy in ovarian vitrification was investigated. MATERIALS AND METHODS Mouse ovaries were cryopreserved by vitrification, and autophagy was treated, after which the ovarian histology was checked, and ovarian follicles were counted. The apoptotic rate was detected by TUNEL, and apoptotic molecular marker cleaved caspase-3 was checked by immunofluorescence and western blot analysis. RESULTS Our results suggested that autophagy was increased in the process of vitrification compared with the fresh ovaries (p<0.05). The number of primordial follicles was decreased through inhibiting or over-activating the autophagy by autophagy inhibitor or activator (p<0.05). However, the number of primary follicles, antral follicles and atretic follicles was not significantly different compared with vitrified/warmed groups. The apoptotic rate was significantly increased in the vitrified/warmed, autophagy-inhibiting and over-activating groups compared with the fresh group (p<0.05), and this result was further confirmed by western blot analysis. CONCLUSIONS Taken together, autophagy was activated in the ovarian cryopreservation by vitrification and plays a role in a natural adaptive response to cold stress in ovarian cryopreservation by vitrification.
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Affiliation(s)
- Y Xian
- Key Laboratory of Fertility Preservation and Maintenance, Ministry of Education, Key Laboratory of Reproduction and Genetics in Ningxia, Department of Histology and Embryology, Department of Biochemistry, Ningxia Medical University, Yinchuan, Ningxia, China
| | - B Li
- Key Laboratory of Fertility Preservation and Maintenance, Ministry of Education, Key Laboratory of Reproduction and Genetics in Ningxia, Department of Histology and Embryology, Department of Biochemistry, Ningxia Medical University, Yinchuan, Ningxia, China
| | - P Pan
- Key Laboratory of Fertility Preservation and Maintenance, Ministry of Education, Key Laboratory of Reproduction and Genetics in Ningxia, Department of Histology and Embryology, Department of Biochemistry, Ningxia Medical University, Yinchuan, Ningxia, China
| | - Y Wang
- Key Laboratory of Fertility Preservation and Maintenance, Ministry of Education, Key Laboratory of Reproduction and Genetics in Ningxia, Department of Histology and Embryology, Department of Biochemistry, Ningxia Medical University, Yinchuan, Ningxia, China
| | - X Pei
- Key Laboratory of Fertility Preservation and Maintenance, Ministry of Education, Key Laboratory of Reproduction and Genetics in Ningxia, Department of Histology and Embryology, Department of Biochemistry, Ningxia Medical University, Yinchuan, Ningxia, China.
| | - Y Yang
- Key Laboratory of Fertility Preservation and Maintenance, Ministry of Education, Key Laboratory of Reproduction and Genetics in Ningxia, Department of Histology and Embryology, Department of Biochemistry, Ningxia Medical University, Yinchuan, Ningxia, China.
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Yu L, Zhou L, Xu E, Bi Y, Hu X, Pei X, Jin G. Levothyroxine monotherapy versus levothyroxine and selenium combination therapy in chronic lymphocytic thyroiditis. J Endocrinol Invest 2017; 40:1243-1250. [PMID: 28534148 DOI: 10.1007/s40618-017-0693-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/02/2016] [Accepted: 05/12/2017] [Indexed: 12/18/2022]
Abstract
PURPOSE New strategies are needed for prevention and treatment of chronic lymphocytic thyroiditis (CLT). This study aimed to assess whether combination of levothyroxine treatment and selenium (Se) supplementation results in improved therapeutic effects in CLT compared with levothyroxine monotherapy. METHODS An open-label, randomized controlled study was performed in 60 CLT patients assigned to two groups. Levothyroxine group (LT) patients (n = 24) received levothyroxine alone for 3 months; meanwhile, the combination (LTSS) group (n = 36) was administered levothyroxine with selenium yeast capsule. Blood selenium concentrations, anti-thyroid peroxidase (TPO) and anti-thyroglobulin (Tg) antibody levels, and inflammatory cytokine amounts were compared between both groups before and after treatment. RESULTS At baseline, similar values were obtained in both groups for all the parameters assessed (p > 0.05). After treatment, significantly increased blood selenium levels (µg/L) [90.05 (80.69, 107.76) vs. 39.64 (29.42, 51.10), p < 0.001] and decreased anti-TPO antibody (23.63 ± 9.31 vs. 32.00 ± 10.41%, p = 0.002), anti-Tg antibody (35.84 ± 15.21 vs. 45.47 ± 14.24%, p = 0.015) and IL-2 amounts (pg/mL) [159.29 (124.54, 189.70) vs. 226.48 (190.74, 266.56), p < 0.001] were observed in the LTSS group compared with the LT group post-treatment; meanwhile, similar IL-10 concentrations [23.14 (21.65, 28.56) pg/mL vs. 24.68 (21.71, 29.67) pg/mL] were obtained in both groups. Subgroup analysis of patients with hypothyroidism showed the same trend observed in the whole population; in patients with normal thyroid function, only Se and IL-2 amounts differed between the two treatment groups. Correlation analysis of of the indexes: in HT patients, the basal serum selenium concentration was positively correlated with TT4 (r = 0.294, p < 0.05), significantly negatively correlated with TSH (r = -0.343, p < 0.01), and had no significant correlation with TT3 (p > 0.05). CONCLUSIONS These findings indicated that levothyroxine and selenium combination results in improved therapeutic effects than the levothyroxine monotherapy in preventing CLT progression.
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Affiliation(s)
- L Yu
- Department of Endocrinology, The First Affiliated Hospital of Bengbu Medical College, No. 287 Changhuai Road, Bengbu, 233004, Anhui, China
| | - L Zhou
- Department of Endocrinology, The Second Affiliated Hospital of Bengbu Medical College, Bengbu, 233004, Anhui, China
| | - E Xu
- Room of Physical Diagnostics, Bengbu Medical College, Bengbu, 233030, Anhui, China
| | - Y Bi
- Department of Endocrinology, The First Affiliated Hospital of Bengbu Medical College, No. 287 Changhuai Road, Bengbu, 233004, Anhui, China
| | - X Hu
- Department of Endocrinology, The First Affiliated Hospital of Bengbu Medical College, No. 287 Changhuai Road, Bengbu, 233004, Anhui, China
| | - X Pei
- Department of Endocrinology, The First Affiliated Hospital of Bengbu Medical College, No. 287 Changhuai Road, Bengbu, 233004, Anhui, China
| | - G Jin
- Department of Endocrinology, The First Affiliated Hospital of Bengbu Medical College, No. 287 Changhuai Road, Bengbu, 233004, Anhui, China.
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Shepherd A, Leeman J, Wild A, Imber B, Pei X, Gelb E, Yorke E, Isbell J, Chaft J, Gelblum D, Wu A, Rimner A. A Comparison of Trimodality Therapy Versus Definitive Concurrent Chemoradiation in Patients With Stage IIIA Non–small Cell Lung Cancer. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.1787] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Imber B, Leeman J, Shepherd A, Wild A, Pei X, Gelb E, Chaft J, Mychalczak B, Jones D, Isbell J, Yorke E, Wu A, Rimner A. Prognostic Impact of Tumor Location and Lymph Node Burden for Patients with Stage IIIA Non–small Cell Lung Cancer Receiving Postoperative Radiation Therapy. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.1714] [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: 11/29/2022]
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Weg E, Pei X, Cahlon O, Morrow M, Powell S, McCormick B. Assessing Outcomes in the Management of Postmastectomy Local-Regional Recurrences in Breast Cancer. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Weg E, Kollmeier M, McBride S, Pei X, Zelefsky M. Dose-Escalated Intensity Modulated Radiation Therapy for Prostate Cancer: 15-Year Outcomes Data. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Wild A, Shepherd A, Leeman J, Imber B, Pei X, Gelblum D, Gelb E, Chaft J, Jones D, Isbell J, Yorke E, Wu A, Rimner A. FDG-PET Maximum Standardized Uptake Value is Prognostic for Survival and Disease-Free Survival in Stage IIIA-N2 Non–small Cell Lung Cancer Patients Who Receive Postoperative Radiation Therapy. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.1802] [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: 11/25/2022]
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