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Chen H, Sun X, Pei L, Wang T. Body mass index influences age-related cataracts: an updated meta-analysis and systemic review. Arq Bras Oftalmol 2024; 87:e2021. [PMID: 38656018 DOI: 10.5935/0004-2749.2021-0382] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Accepted: 09/06/2022] [Indexed: 04/26/2024] Open
Abstract
PURPOSE Visual impairment and blindness caused by cataracts are major public health problems. Several factors are associated with an increased risk of age-related cataracts, such as age, smoking, alcohol consumption, and ultraviolet radiation. This meta-analysis aimed to assess the association between body mass index and age-related cataracts. METHODS Studies on weight and age-related cataracts published from January 2011 to July 2020 were reviewed by searching PubMed, Medline, and Web of Science databases. The random-effects and fixed-effects models were used for the meta-analysis, and the results were reported as odd ratios. RESULTS A total of nine studies were included in the meta-analysis. No correlation was found between underweight and nuclear cataracts (OR=1.31, 95% CI [-0.50 to 3.12], p=0.156). The results of the random-effects model showed that overweight was significantly associated with age-related cataracts and reduced the risk of age-related cataracts (OR=0.91, 95% CI [0.80-1.02], p<0.0001; I2=62.3%, p<0.0001). Significant correlations were found between overweight and cortical, nuclear, and posterior subcapsular cataracts (OR=0.95, 95% CI [0.66-1.24], p<0.0001; OR=0.92, 95% CI (0.76-1.08), p<0.0001; OR=0.87, 95% CI [0.38-1.02], p<0.0001). Significant correlations were found between obesity and cortical, nuclear, and posterior subcapsular cataracts (OR=1.00, 95% CI [0.82-1.17], p<0.0001; OR=1.07, 95% CI [0.92-1.22], p<0.0001; OR=1.14, 95% CI [0.91-1.37], p<0.0001). CONCLUSION This finding suggested a significant correlation between body mass index and age-related cataracts, with overweight and obesity reducing or increasing the risk of age-related cataracts, respectively.
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Affiliation(s)
- Huilin Chen
- Department of Medical College, Qingdao University, Qingdao, China
- Eye Hospital of Shandong First Medical University, State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Shandong Eye Institute, Shandong First University & Shandong Academy of Medical Sciences, Jinan, China
| | - Xiaolei Sun
- Department of Ocular Fundus, Eye Hospital of Shandong First Medical University, State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Shandong Eye Institute, Shandong First University & Shandong Academy of Medical Sciences, Jinan, China
- Department of Ocular Fundus, Eye Hospital of Shandong First Medical University, State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Shandong Eye Institute, Shandong First University & Shandong Academy of Medical Sciences, Jinan, China
| | - Li Pei
- Department of Cataract, Eye Hospital of Shandong First Medical University, State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Shandong Eye Institute, Shandong First University & Shandong Academy of Medical Sciences, Jinan, China
| | - Ting Wang
- Department of Cataract, Eye Hospital of Shandong First Medical University, State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Shandong Eye Institute, Shandong First University & Shandong Academy of Medical Sciences, Jinan, China
- Department of Cataract, Eye Hospital of Shandong First Medical University, State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Shandong Eye Institute, Shandong First University & Shandong Academy of Medical Sciences, Jinan, China
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Qu Q, Ning T, Li J, Pei L, Bai B, Zheng J, Wang J, Dong F, Feng Y. Photonic delay reservoir computer based on ring resonator for reconfigurable microwave waveform generator. Opt Express 2024; 32:12092-12103. [PMID: 38571042 DOI: 10.1364/oe.518777] [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] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Accepted: 03/12/2024] [Indexed: 04/05/2024]
Abstract
To achieve an autonomously controlled reconfigurable microwave waveform generator, this study proposes and demonstrates a self-adjusting synthesis method based on a photonic delay reservoir computer with ring resonator. The proposed design exploits the ring resonator to configure the reservoir, facilitating a nonlinear transformation and providing delay space. A theoretical analysis is conducted to explain how this configuration addresses the challenges of microwave waveform generation. Considering the generalization performance of waveform generation, the simulations demonstrate the system's capability to produce six distinct representative waveforms, all exhibiting a highly impressive root mean square error (RMSE) of less than 1%. To further optimize the system's flexibility and accuracy, we explore the application of various artificial intelligence algorithms at the reservoir computer's output layer. Furthermore, our investigation delves deeply into the complexities of system performance, specifically exploring the influence of reservoir neurons and micro-ring resonator parameters on calculation performance. We also delve into the scalability of reservoirs, considering both parallel and cascaded arrangements.
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Zou D, Lu X, Song F, Zhong X, Chen H, Zhang J, Tian Y, Pei L, Li F, Lu X, Shi W, Wang T. Characteristics of bacterial community in eyelashes of patients with Demodex blepharitis. Parasit Vectors 2024; 17:64. [PMID: 38355686 PMCID: PMC10868039 DOI: 10.1186/s13071-024-06122-x] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Accepted: 01/08/2024] [Indexed: 02/16/2024] Open
Abstract
BACKGROUND Demodex blepharitis (DB) is a common disease of the ocular surface. The characteristics of the bacterial community in eyelash roots after Demodex infestation are still unknown. Knowledge of the characteristics of the bacterial community of eyelash follicles in patients with DB can provide valuable insights for guiding the diagnosis and treatment of DB. METHODS Twenty-five patients with DB (DB group) and 21 non-DB volunteers (control group) were enrolled in the study. Eyelashes from the upper eyelid of the right eye were sampled, and 16S ribosomal DNA (rDNA) sequencing was performed to determine the V3-V4 regions of the microbial 16S rDNA gene within 1 month of infestation. The sequencing data of the two groups were analyzed and compared. The effect of the bacterium Burkholderia on the survival of Demodex mites was evaluated using Demodex obtained from 12 patients with DB other that the patients in the DB group. RESULTS A total of 31 phyla and 862 genera were identified in the DB and control groups. The five most abundant phyla in the two groups were Proteobacteria, Firmicutes, Actinobacteria, Bacteroidetes and Cyanobacteria. The abundance of Actinomycetes was significantly higher in the DB group than in the control group. At the genus level, the five most abundant genera in the two groups were Pseudomonas, Burkholderia-Caballeronia-Paraburkholderia, Rolstonia and Acinetobacter; Clostridium sensu stricto 1 was abundant in the control group and Corynebacterium_1 was abundant in the DB group. Compared with the control group, the abundance of Burkholderia-Caballeronia-Paraburkholderia was 2.36-fold lower in the DB group. Linear discriminant analysis Effect Size (LEfSe) analysis revealed Burkholderia-Caballeronia-Paraburkholderia, SC_I_84_unclassified, Nonmyxobacteria and Succinvibrio to be the major biomarkers in the control group and Catenibacterium and Lachnospiraceae NK4A136 group to be the major biomarkers in the DB group. To explore the performance of these optimal marker models, receiver operational characteristic curve analysis was performed, and the average area under the curve value of Burkholderia-Caballeronia-Paraburkholderia was 0.7448. Burkholderia cepacia isolated from normal human eyelashes was fermented, and the Demodex mites isolated from patient eyelashes were cultured together with its fermented supernatant. The results showed that the fermentation supernatant could significantly reduce the survival time of the Demodex mites, suggesting the potential therapeutic value of this bacterium against Demodex. CONCLUSIONS The composition of the bacterial community in the eyelashes of DB patients differed from that in eyelashes of healthy volunteers, revealing a decrease in bacterial diversity in infested eyelashes. This decrease may be related to the occurrence and development of DB. The supernatant of Burkholderia cepacia culture medium was found to inhibit the growth of Demodex in eyelash hair follicles, providing a new insight with potential applications for the clinical treatment of Demodex infestation.
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Affiliation(s)
- Dulei Zou
- Qingdao University, Qingdao, China
- Eye Hospital of Shandong First Medical University (Shandong Eye Hospital), Jinan, China
- State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Eye Institute of Shandong First Medical University, Qingdao, China
- School of Ophthalmology, Shandong First Medical University, Jinan, China
| | - Xiuhai Lu
- Eye Hospital of Shandong First Medical University (Shandong Eye Hospital), Jinan, China
- State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Eye Institute of Shandong First Medical University, Qingdao, China
- School of Ophthalmology, Shandong First Medical University, Jinan, China
| | - Fangying Song
- State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Eye Institute of Shandong First Medical University, Qingdao, China
- School of Ophthalmology, Shandong First Medical University, Jinan, China
- Qingdao Eye Hospital of Shandong First Medical University, Qingdao, China
| | - Xiaowei Zhong
- Eye Hospital of Shandong First Medical University (Shandong Eye Hospital), Jinan, China
- State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Eye Institute of Shandong First Medical University, Qingdao, China
- School of Ophthalmology, Shandong First Medical University, Jinan, China
| | - Huabo Chen
- State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Eye Institute of Shandong First Medical University, Qingdao, China
- School of Ophthalmology, Shandong First Medical University, Jinan, China
- Qingdao Eye Hospital of Shandong First Medical University, Qingdao, China
| | - Ju Zhang
- Eye Hospital of Shandong First Medical University (Shandong Eye Hospital), Jinan, China
- State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Eye Institute of Shandong First Medical University, Qingdao, China
- School of Ophthalmology, Shandong First Medical University, Jinan, China
| | - Yabin Tian
- Eye Hospital of Shandong First Medical University (Shandong Eye Hospital), Jinan, China
- State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Eye Institute of Shandong First Medical University, Qingdao, China
- School of Ophthalmology, Shandong First Medical University, Jinan, China
| | - Li Pei
- Eye Hospital of Shandong First Medical University (Shandong Eye Hospital), Jinan, China
- State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Eye Institute of Shandong First Medical University, Qingdao, China
- School of Ophthalmology, Shandong First Medical University, Jinan, China
| | - Fengjie Li
- Eye Hospital of Shandong First Medical University (Shandong Eye Hospital), Jinan, China
- State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Eye Institute of Shandong First Medical University, Qingdao, China
- School of Ophthalmology, Shandong First Medical University, Jinan, China
| | - Xi Lu
- Eye Hospital of Shandong First Medical University (Shandong Eye Hospital), Jinan, China
- State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Eye Institute of Shandong First Medical University, Qingdao, China
- School of Ophthalmology, Shandong First Medical University, Jinan, China
| | - Weiyun Shi
- Eye Hospital of Shandong First Medical University (Shandong Eye Hospital), Jinan, China.
- State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Eye Institute of Shandong First Medical University, Qingdao, China.
- School of Ophthalmology, Shandong First Medical University, Jinan, China.
| | - Ting Wang
- Eye Hospital of Shandong First Medical University (Shandong Eye Hospital), Jinan, China.
- State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Eye Institute of Shandong First Medical University, Qingdao, China.
- School of Ophthalmology, Shandong First Medical University, Jinan, China.
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Wang D, Pei L, Zheng J, Wang J, Wang C, He Q, Li J, Ning T. Experimental investigation on the internal stress of bismuth-doped fiber and its effect on the noise figure of Bismuth-doped fiber amplifier. Opt Express 2024; 32:1406-1420. [PMID: 38297693 DOI: 10.1364/oe.510503] [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] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Accepted: 12/18/2023] [Indexed: 02/02/2024]
Abstract
The noise figure (NF) of a fiber amplifier is one of the key measures of amplification performance, which characterizes the quality of the amplified signal. Residual stresses are inevitably generated during the manufacturing process of optical fibers, and this can lead to changes in the refractive index (RI) distribution of the fiber. Further, the change in RI distribution causes the mode-field characteristics of the fiber to change as well, and this ultimately has an impact on the NF performance of the amplifier. However, until now, there have been fewer studies on the effect of residual stress on the NF of the fiber amplifiers. In this work, we took a commercial single-mode bismuth-doped fiber (BDF) as an example and used a self-developed stress test device to measure its residual stress and refractive index distribution and compare it with that of a passive fiber. We also comprehensively compared the distribution of residual stress and refractive index of the fiber at different pump powers and pump wavelengths. Finally, we performed numerical simulations of the bismuth-doped fiber amplifier (BDFA) based on the BDF under the theoretical mode field area and BDF after the expansion of the mode field area due to stresses to compare the NF performance. The results demonstrate that: the entire cross-section (core and cladding) of the BDF exhibits tensile stress (>0 MPa), where the residual stress at the core of the BDF is nearly 9.8 MPa higher than that of the passive fiber; The residual stress makes the mode-field area of the BDF expand by 26.7% compared with the theoretical values, which ultimately makes the NF of the BDFA rise from 4.6 dB to 4.7 dB; The stress at the BDF core is exacerbated by pump excitation, where it is elevated by about 26% and 5% compared to vacancy at 1240 nm and 1310 nm pumps, which is most likely attributed to thermal effects. Therefore, it is necessary to consider the effect of residual stresses in the fabrication of optical fibers to better achieve the radius of the expected indicators. This work contributes to the better development of O-band BDFAs, especially for pre-simulation of the actual performance of BDFAs with a practical reference.
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Zheng H, Pei L, Bai J, Wu P, Zhao X, Yang Y, Chen Z, Zhang M, Wang J. Eosin Y-Based Metal-Organic Framework Synergistic with Cobalt(II) Complex for Hydrogen Evolution through Photoinduced Intermolecular Electron Transfer. Inorg Chem 2023; 62:21424-21431. [PMID: 38044658 DOI: 10.1021/acs.inorgchem.3c03564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2023]
Abstract
Photocatalytic hydrogen evolution reaction (HER) is a promising approach for producing clean energy and has the potential to play an important role in the transition toward a more sustainable and environmentally friendly energy system. Optimizing the photoinduced electron transfer (PET) process and increasing visible-light utilization play a central role in photocatalysis. Herein, we built a novel Eosin Y-based metal-organic framework (Zn-EYTP) by synergizing a cobalt(II) complex for boosting the H2 evolution efficiency through photoinduced intermolecular electron transfer. Under optimized conditions, the maximum H2 evolution efficiency for Zn-EYTP was determined to be a turnover number (TON) value of 11,100 under green LED irradiation. And the synthesized Zn-EYTP photocatalysts could be easily recycled to restore the initial photocatalytic activity even after 3 cycles. Detailed studies reveal that the significantly enhanced HER activity in Zn-EYTP could be ascribed to the effective separation of photogenerated charges and the synergistic intermolecular interaction between Zn-EYTP and [Co(bpy)3]Cl2. The present work enables a deeper understanding of the importance of the PET process for enhanced HER photocatalytic activities, which will provide a viable strategy for the development of highly efficient photocatalysts.
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Affiliation(s)
- Hao Zheng
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu 221116, P. R. China
| | - Li Pei
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu 221116, P. R. China
| | - Jianguo Bai
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu 221116, P. R. China
| | - Pengyan Wu
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu 221116, P. R. China
| | - Xiaoli Zhao
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu 221116, P. R. China
| | - Yan Yang
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu 221116, P. R. China
| | - Zeyuan Chen
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu 221116, P. R. China
| | - Moxi Zhang
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu 221116, P. R. China
| | - Jian Wang
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu 221116, P. R. China
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Hou H, Ning T, Ma C, Wang Y, Zhang D, Wang W, Gu Z, Jiang W, Pei L. Self-similar pulse compression in a tapered Pb-silicate photonic crystal fiber at 2 µm. Appl Opt 2023; 62:9299-9306. [PMID: 38108701 DOI: 10.1364/ao.503497] [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] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Accepted: 11/13/2023] [Indexed: 12/19/2023]
Abstract
We report a 2-µm all-fiber nonlinear pulse compressor based on a tapered Pb-silicate photonic crystal fiber (PCF), which is capable of achieving large compression with low pedestal energy. A tapered Pb-silicate photonic crystal fiber with increased nonlinear coefficients is proposed for achieving self-similar pulse compression (SSPC) at 2 µm. The dynamic evolution of the fundamental order soliton is numerically analyzed based on the designed tapered fiber. After pulse compression in a tapered fiber with a length of 2.2 m, an initial 1.76 ps pulse can be compressed to 88 fs, increasing the peak power from 4.4 to 86 W with a compression factor of 20 and a quality factor of 98%. The results reveal that exponential variation yields superior compression performance and provides a promising solution for generating high-power femtosecond pulses at 2 µm.
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Bai J, Wang J, Zheng H, Zhao X, Wu P, Pei L, Wang J. Modulating Photoinduced Electron Transfer between Photosensitive MOF and Co(II) Proton Reduction Sites for Boosting Photocatalytic Hydrogen Production. Small 2023; 19:e2305024. [PMID: 37533371 DOI: 10.1002/smll.202305024] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 07/27/2023] [Indexed: 08/04/2023]
Abstract
Photocatalytic hydrogen production via water splitting is the subject of intense research. Photoinduced electron transfer (PET) between a photosensitizer (PS) and a proton reduction catalyst is a prerequisite step and crucial to affecting hydrogen production efficiency. Herein, three photoactive metal-organic framework (MOF) systems having two different PET processes where PS and Co(II) centers are either covalently bonded or coexisting to drive photocatalytic H2 production are built. Compared to these two intramolecular PET systems including CoII -Zn-PDTP prepared from the post-synthetic metalation toward uncoordinated pyridine N sites of Zn-PDTP and sole cobalt-based MOF Co-PDTP, the CoII (bpy)3 @Zn-PDTP system impregnated by molecular cocatalyst possessing intermolecular PET process achieves the highest H2 evolution rate of 116.8 mmol g-1 h-1 over a period of 10 h, about 7.5 and 9.3 times compared to CoII -Zn-PDTP and Co-PDTP in visible-light-driven H2 evolution, respectively. Further studies reveal that the enhanced photoactivity in CoII (bpy)3 @Zn-PDTP can be ascribed to the high charge-separation efficiency of Zn-PDTP and the synergistic intermolecular interaction between Zn-PDTP and cobalt complexes. The present work demonstrates that the rational design of PET process between MOFs and catalytic metal sites can be a viable strategy for the development of highly efficient photocatalysts with enhanced photocatalytic activities.
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Affiliation(s)
- Jianguo Bai
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu, 221116, P. R. China
| | - Jun Wang
- School of Environmental and Natural Resources, Zhejiang University of Science and Technology, Hangzhou, Zhejiang, 310023, P. R. China
| | - Hao Zheng
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu, 221116, P. R. China
| | - Xiaoli Zhao
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu, 221116, P. R. China
| | - Pengyan Wu
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu, 221116, P. R. China
| | - Li Pei
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu, 221116, P. R. China
| | - Jian Wang
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu, 221116, P. R. China
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Ji C, Pei L, Qin J, Wu P, Su N, Zhang T, Zhang Y, Wang J. Post-Synthetic Modification of an Amino-Functionalized Metal-Organic Framework for Highly In Situ Luminescent Detection of Mercury (II). Nanomaterials (Basel) 2023; 13:2784. [PMID: 37887935 PMCID: PMC10610009 DOI: 10.3390/nano13202784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 10/14/2023] [Accepted: 10/16/2023] [Indexed: 10/28/2023]
Abstract
A sulfur-containing metal-organic framework, donated as UiO-66-NSMe, was prepared by the post-synthetic modification (PSM) of UiO-66-NH2 with 2-(Methylthio)benzaldehyde, and the successful synthesis of PSM was confirmed by X-ray photoelectron spectroscopy (XPS), FT-IR and 1H NMR studies. According to the characteristics of mercury thiophilic, UiO-66-NSMe could be used as a luminescent sensor for Hg2+ detection with a high selectivity and sensitivity (Ksv = 2.5 × 104 M-1; LOD = 20 nM), which could be attributed to the coordination between sulfur sites and Hg2+ based on XPS results. In practical applications, UiO-66-NSMe yielded satisfactory recovery rates (ranging from 96.1% to 99.5%) when it was employed for detecting Hg2+ in spiked environmental samples. Furthermore, UiO-66-NSMe was successfully employed to detect mercury (II) residues with the in situ rapid nondestructive imaging in simulated fresh agricultural products. Thus, this PSM strategy could provide good guidance for environmental protection methodologies in the future.
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Affiliation(s)
| | | | | | - Pengyan Wu
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou 221116, China
| | | | | | | | - Jian Wang
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou 221116, China
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Mishra P, Jiongming L, Jianhe L, Kewei F, Yongming J, Wang G, Pei L, Tongxing Y. Prostate Cancer among Patients Undergoing Radical Cystoprostatectomy for Bladder Cancer in the Department of Urology in a Tertiary Care Centre. JNMA J Nepal Med Assoc 2023; 61:782-786. [PMID: 38289768 PMCID: PMC10579766 DOI: 10.31729/jnma.8309] [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: 09/25/2023] [Indexed: 02/01/2024] Open
Abstract
Introduction Prostate cancer is the most common malignancy in men and remains one of the most prevalent and least understood of all human malignancies. Bladder cancer is the most frequently diagnosed cancer in China. Radical cystectomy remains the gold standard for muscle-invasive, recurrent and multiple bladder cancer. All male patients undergoing radical cystoprostatectomy must be evaluated for prostate cancer before planning surgery. The aim of this study was to find out the prevalence of prostate cancer among patients undergoing radical cystoprostatectomy undergoing surgery for bladder cancer. Methods A descriptive cross-sectional study was conducted in a tertiary care centre from 1 August 2023 to 30 August 2023 where data from 1 January 2015 to 30 December 2017 was taken from medical records after obtaining ethical approval from the Ethical Review Board. All patients who underwent radical cystoprostatectomy were included in the study. Whole radical cystoprostatectomy specimens were cut transversely at 3 mm intervals and examined in the same pathological centre. Clinically significant prostate cancer was defined as a tumour with a Gleason pattern ≥4, prostate tumour with clinical stage ≥pT3, lymph node. involvement, positive surgical margin or multifocality of three or more lesions. A convenience sampling method was used. The point estimate was calculated at a 95% Confidence Interval. Results Among 210 patients, 52 (24.76%) (18.92-30.60, 95% Confidence Interval) had incidental prostate cancer. The average age of patients with incidental prostate cancer was 65.88±9.54 years. Conclusions The prevalence of incidental prostate cancer was found to be lower than the study conducted in a similar setting. Keywords bladder cancer; incidental findings; prostate cancer.
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Affiliation(s)
- Prashant Mishra
- Department of Urology, The Second Affiliated Hospital of Kunming Medical University, Yunnan Institute of Urology, Kunming, Yunnan, People's Republic of China
| | - Li Jiongming
- Department of Urology, The Second Affiliated Hospital of Kunming Medical University, Yunnan Institute of Urology, Kunming, Yunnan, People's Republic of China
| | - Liu Jianhe
- Department of Urology, The Second Affiliated Hospital of Kunming Medical University, Yunnan Institute of Urology, Kunming, Yunnan, People's Republic of China
| | - Fang Kewei
- Department of Urology, The Second Affiliated Hospital of Kunming Medical University, Yunnan Institute of Urology, Kunming, Yunnan, People's Republic of China
| | - Jiang Yongming
- Department of Urology, The Second Affiliated Hospital of Kunming Medical University, Yunnan Institute of Urology, Kunming, Yunnan, People's Republic of China
| | - Guang Wang
- Department of Urology, The Second Affiliated Hospital of Kunming Medical University, Yunnan Institute of Urology, Kunming, Yunnan, People's Republic of China
| | - Li Pei
- Department of Urology, The Second Affiliated Hospital of Kunming Medical University, Yunnan Institute of Urology, Kunming, Yunnan, People's Republic of China
| | - Yang Tongxing
- Department of Urology, The Second Affiliated Hospital of Kunming Medical University, Yunnan Institute of Urology, Kunming, Yunnan, People's Republic of China
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He K, Ning T, Li J, Pei L, Bai B, Wang J. Light manipulation for all-fiber devices with VCSEL and graphene-based metasurface. Opt Express 2023; 31:29627-29638. [PMID: 37710759 DOI: 10.1364/oe.500554] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Accepted: 08/10/2023] [Indexed: 09/16/2023]
Abstract
Light manipulation for all-fiber devices has played a vital role in controllable photonic devices. A graphene-based metasurface is proposed to realize light manipulation. A row of VCSEL-based optical engines with low crosstalk is used as the control light to modulate the signal transmitted in the microstructured fiber. In this configuration, the proposed device can work independently of the wavelength division multiplexing (WDM) system. With an insertion loss of only 0.28 dB, evanescent wave coupling to graphene layers is polarisation-insensitive. The device could be effectively manipulated for a few days (not less than 72 hours), which possesses the capacity to dynamically modulate the signal light with both low-temperature sensitivity and low-wavelength sensitivity. The 35 nm wavelength interval results in a change of only about 0.1 dB in the output light intensity of the microstructured fiber when the wavelength changes from 1530 nm to 1565 nm. Moreover, the modulation depth is approximately 2 dB when the modulating voltage is 2.2 V, which may open avenues for channel detection techniques and have deep implications in top tuning applications.
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Yan M, Li J, Wang X, Pei L, Ning T, Zheng J, Wang J. Photonic generation of triangular waveform with tunable symmetry based on channelized frequency synthesis. Appl Opt 2023; 62:6366-6374. [PMID: 37706828 DOI: 10.1364/ao.493034] [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] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Accepted: 07/30/2023] [Indexed: 09/15/2023]
Abstract
A symmetry tunable triangular waveform photonic generator based on channelized frequency synthesis is proposed and studied. The generator adopts a multichannel system architecture and harmonic amplitude control algorithm to physically isolate each subchannel. In a single subchannel, quadrature phase shift keying modulation and coherent dual-wavelength balanced detection are used to realize optical upconversion and suppress mixing interference in the process of frequency conversion. Therefore, the model has the characteristics of a high-order Fourier series fitting tunable function waveform output. The analysis results show that the Fourier series harmonic coefficients can be adjusted flexibly by the multivariable joint regulation algorithm. The relationship between the variables is analyzed and discussed. The feasibility of the scheme is verified by optical simulation; when the rms error (RMSE)≤0.03, a 20%-80% tunable symmetry triangular waveform can be obtained.
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Bai Y, Tian D, Ren Z, Yue D, Ren Q, Pei L, Pan J. The dependences of mesenchymal stem cells commitments on the size, concentration, internalization and exposure time of Iron Oxide Nanoparticles through F-actin, Lamin A and ROS. J Biomed Mater Res A 2023. [PMID: 36939155 DOI: 10.1002/jbm.a.37534] [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: 07/16/2022] [Revised: 02/21/2023] [Accepted: 03/07/2023] [Indexed: 03/21/2023]
Abstract
Though magnetic iron oxide nanoparticles (IONPs) are approved for clinical use as contrast agents for MR imaging in United States and Europe, and are widely used to label cells in research, the relationship between IONPs and mesenchymal stem cells (MSCs) is not fully addressed. Here the effects of consistently appeared γ-Fe2 O3 on the lineage commitment of MSCs were studied to optimize applications of IONPs in MSCs upon verification of viability. 30 nm 10 μg/mL induced highest promotions on osteogenesis, while 30 and 50 nm of 100 μg/mL elicited most chondrogensis in 14 days, where the effects on ALP, GAG and SOX9 appeared after 7 days, while on RUNX2 came out after 10 days. γ-Fe2 O3 enhanced intracellular and extracellular Fe3+ and ROS, modulated F-actin and decreased Lamin A of MSCs at different time scale. The disturbances of F-actin, Lamin A or ROS altered the effects of γ-Fe2 O3 on MSC differentiation. Our results demonstrate that different size, concentration and modulation of γ-Fe2 O3 are needed in its MSC applications for bone and cartilage tissues. Furthermore, an undocumented phenomenon that the modulation of F-actin affected the Lamin A expression in MSCs was observed.
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Affiliation(s)
- Yuying Bai
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, College of Bioengineering, Chongqing University, Chongqing, China
| | - Dawei Tian
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, College of Bioengineering, Chongqing University, Chongqing, China
| | - Zhengxin Ren
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, College of Bioengineering, Chongqing University, Chongqing, China
| | - Dangyang Yue
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, College of Bioengineering, Chongqing University, Chongqing, China
| | - Qian Ren
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, College of Bioengineering, Chongqing University, Chongqing, China
| | - Li Pei
- Department of Hematology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, China
| | - Jun Pan
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, College of Bioengineering, Chongqing University, Chongqing, China
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Pei L, Chang Y, Wang J, Zheng J, Ning T, Li J, Bai B, Shen L, Zhong L. Fiber Residual Stress Effects on Modal Gain Equalization of Few-Mode Fiber Amplifier. Sensors (Basel) 2023; 23:2574. [PMID: 36904778 PMCID: PMC10006937 DOI: 10.3390/s23052574] [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: 02/08/2023] [Revised: 02/21/2023] [Accepted: 02/24/2023] [Indexed: 06/18/2023]
Abstract
The modal gain equalization (MGE) of few-mode fiber amplifiers (FMFAs) ensures the stability of signal transmission. MGE mainly relies on the multi-step refractive index (RI) and doping profile of few-mode erbium-doped fibers (FM-EDFs). However, complex RI and doping profiles lead to uncontrollable residual stress variations in fiber fabrication. Variable residual stress apparently affects MGE due to its impacts on the RI. So, this paper focuses on the residual stress effects on MGE. The residual stress distributions of passive and active FMFs were measured using a self-constructed residual stress test configuration. As the erbium doping concentration increased, the residual stress of the fiber core decreased, and the residual stress of the active fibers was two orders of magnitude lower than that of the passive fiber. Compared with the passive FMF and the FM-EDFs, the residual stress of the fiber core completely transformed from tensile stress to compressive stress. This transformation led to an obvious smooth RI curve variation. The measurement values were analyzed with FMFA theory, and the results show that the differential modal gain of the FMFA increased from 0.96 to 1.67 dB as the residual stress decreased from 4.86 to 0.01 MPa.
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Affiliation(s)
- Li Pei
- Key Laboratory of All Optical Network and Advanced Telecommunication Network, Ministry of Education, Institute of Lightwave Technology, Beijing Jiaotong University, Beijing 100044, China
| | - Yanbiao Chang
- Key Laboratory of All Optical Network and Advanced Telecommunication Network, Ministry of Education, Institute of Lightwave Technology, Beijing Jiaotong University, Beijing 100044, China
| | - Jianshuai Wang
- Key Laboratory of All Optical Network and Advanced Telecommunication Network, Ministry of Education, Institute of Lightwave Technology, Beijing Jiaotong University, Beijing 100044, China
| | - Jingjing Zheng
- Key Laboratory of All Optical Network and Advanced Telecommunication Network, Ministry of Education, Institute of Lightwave Technology, Beijing Jiaotong University, Beijing 100044, China
| | - Tigang Ning
- Key Laboratory of All Optical Network and Advanced Telecommunication Network, Ministry of Education, Institute of Lightwave Technology, Beijing Jiaotong University, Beijing 100044, China
| | - Jing Li
- Key Laboratory of All Optical Network and Advanced Telecommunication Network, Ministry of Education, Institute of Lightwave Technology, Beijing Jiaotong University, Beijing 100044, China
| | - Bing Bai
- Key Laboratory of All Optical Network and Advanced Telecommunication Network, Ministry of Education, Institute of Lightwave Technology, Beijing Jiaotong University, Beijing 100044, China
| | - Lei Shen
- State Key Laboratory of Optical Fiber and Cable Manufacture Technology, Yangtze Optical Fibre and Cable Joint Stock Limited Company, Wuhan 430073, China
| | - Li Zhong
- State Key Laboratory of Optical Fiber and Cable Manufacture Technology, Yangtze Optical Fibre and Cable Joint Stock Limited Company, Wuhan 430073, China
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Zhao Q, Pei L, Tang J, Wang J, Zheng J, Li J, Ning T. Design of few-mode erbium-doped fiber with a low differential modal gain and weak coupling based on layered doping. Appl Opt 2023; 62:1567-1574. [PMID: 36821318 DOI: 10.1364/ao.480925] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Accepted: 01/17/2023] [Indexed: 06/18/2023]
Abstract
A step index few-mode erbium-doped fiber (FM-EDF) for mode gain equalization is designed and proposed in this paper, which uses the layered-doping method to reduce the differential mode gain (DMG). The optimum structure of FM-EDF is obtained by adjusting the doping radius and doping concentration. When this structure is applied to a few-mode erbium-doped fiber amplifier (FM-EDFA), the DMG in the range of 1550-1565 nm is ∼0.28d B, and the DMG of the whole C-band is usually less than 0.5 dB. At the same time, the gain of each mode in 1530-1555 nm is ∼20d B, while the gain decreases gradually in the 1555-1565 nm due to the absorption characteristics of erbium ions. In addition, the minimum refractive index difference (Δ n eff) between modes is 1.29∗10-3 due to the selection of the refractive index and radius of the fiber core, which will greatly reduce the coupling between modes in practical application. Tolerances in the fiber manufacturing process are also considered for reliable FM-EDFA performance. When the doping concentration or the doping radius changes based on the precise value, the DMG will increase to a certain extent. In general, the DMG can maintain a small value, which is beneficial to applications in optical communication systems.
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Li J, Pei L, Liang S, Xu S, Wang Y, Wang X, Liao Y, Zhan Q, Cheng W, Yang Z, Tang X, Zhang H, Xiao Q, Chen J, Liu L, Wang L. Gene mutation analysis using next-generation sequencing and its clinical significance in patients with myeloid neoplasm: A multi-center study from China. Cancer Med 2023; 12:9332-9350. [PMID: 36799265 PMCID: PMC10166913 DOI: 10.1002/cam4.5690] [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: 07/16/2022] [Revised: 01/19/2023] [Accepted: 01/31/2023] [Indexed: 02/18/2023] Open
Abstract
BACKGROUND Myeloid neoplasms (MN) tend to relapse and deteriorate. Exploring the genomic mutation landscape of MN using next-generation sequencing (NGS) is a great measure to clarify the mechanism of oncogenesis and progression of MN. METHODS This multicenter retrospective study investigated 303 patients with MN using NGS from 2019 to 2021. The characteristics of the mutation landscape in the MN subgroups and the clinical value of gene variants were analyzed. RESULTS At least one mutation was detected in 88.11% of the patients (267/303). TET2 was the most common mutation in the cohort, followed by GATA2, ASXL1, FLT3, DNMT3A, and TP53. Among patients with myeloid leukemia (ML), multivariate analysis showed that patients aged ≥60 years had lower overall survival (OS, p = 0.004). Further analysis showed TET2, NPM1, SRSF2, and IDH1 gene mutations, and epigenetic genes (p < 0.050) presented significantly higher frequency in older patients. In patients with myelodysplastic syndrome (MDS) and myelodysplastic neoplasms (MPN), univariate analysis showed that BCORL1 had a significant impact on OS (p = 0.040); however, in multivariate analysis, there were no factors significantly associated with OS. Differential analysis of genetic mutations showed FLT3, TP53, MUC16, SRSF2, and KDM5A mutated more frequently (p < 0.050) in secondary acute myeloid leukemia (s-AML) than in MDS and MPN. TP53, U2AF1, SRSF2, and KDM5A were mutated more frequently (p < 0.050) in s-AML than in primary AML. KDM5A was observed to be restricted to patients with s-AML in this study, and only co-occurred with MUC16 and TP53 (2/2, 100%). Another mutation was MUC16, and its co-occurrence pattern differed between s-AML and AML. MUC16 mutations co-occurred with KDM5A and TP53 in 66.7% (2/3) of patients with s-AML and co-occurred with CEBPA in 100% (4/4) of patients with AML. CONCLUSIONS Our results demonstrate different genomic mutation patterns in the MN subgroups and highlight the clinical value of genetic variants.
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Affiliation(s)
- Junnan Li
- Department of Hematology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China
| | - Li Pei
- Department of Hematology, The First Affiliated Hospital of Army Medical University(Southwest Hospital), Chongqing, China
| | - Simin Liang
- Department of Hematology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China
| | - Shuangnian Xu
- Department of Hematology, The First Affiliated Hospital of Army Medical University(Southwest Hospital), Chongqing, China
| | - Yi Wang
- Department of Hematology, Shaanxi Provincial People's Hospital, Xi'An, Shaanxi, China
| | - Xiao Wang
- Department of Hematology, Shaanxi Provincial People's Hospital, Xi'An, Shaanxi, China
| | - Yi Liao
- Department of Oncology and Hematology, Chongqing University Affiliated Center Hospital, Chongqing, China
| | - Qian Zhan
- Department of Hematology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China
| | - Wei Cheng
- Department of Hematology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China
| | - Zesong Yang
- Department of Hematology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China
| | - Xiaoqiong Tang
- Department of Hematology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China
| | - Hongbin Zhang
- Department of Hematology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China
| | - Qing Xiao
- Department of Hematology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China
| | - Jianbin Chen
- Department of Hematology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China
| | - Lin Liu
- Department of Hematology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China
| | - Li Wang
- Department of Hematology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China
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Huang Y, Peng M, Qin H, Li Y, Pei L, Liu X, Zhao X. LAPTM4B promotes AML progression through regulating RPS9/STAT3 axis. Cell Signal 2023; 106:110623. [PMID: 36758682 DOI: 10.1016/j.cellsig.2023.110623] [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: 01/05/2023] [Revised: 02/02/2023] [Accepted: 02/03/2023] [Indexed: 02/10/2023]
Abstract
Acute myeloid leukemia (AML) is a heterogeneous disorder with high morbidity and mortality under the existing treatment strategy. Here, we found that lysosome-associated protein transmembrane 4 beta (LAPTM4B) was frequently upregulated in AML, and high LAPTM4B was associated with poor outcome. Moreover, LAPTM4B promoted leukemia progression in vitro and in vivo. Mechanically, LAPTM4B interacted with RPS9, and positively regulated RPS9 protein stability, which enhanced leukemia cell progression via activating STAT3. Our findings indicate for the first time that LAPTM4B contributes to leukemia progression in a RPS9/STAT3-dependent manner, suggesting that LAPTM4B may serve as a promising target for treatment of AML.
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Affiliation(s)
- Yongxiu Huang
- School of Medicine, Chongqing University, Chongqing 400044, China; Department of Hematology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China
| | - Meixi Peng
- Biology Science Institutes, Chongqing Medical University, Chongqing 400016, China
| | - Huanhuan Qin
- Zunyi Medical University, Zunyi, Guizhou 563000, China
| | - Yan Li
- Biology Science Institutes, Chongqing Medical University, Chongqing 400016, China
| | - Li Pei
- Department of Hematology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China.
| | - Xindong Liu
- School of Medicine, Chongqing University, Chongqing 400044, China; Institute of Pathology and Southwest Cancer Center, Southwest Hospital, Army Medical University, Chongqing 400038, China.
| | - Xueya Zhao
- Biology Science Institutes, Chongqing Medical University, Chongqing 400016, China.
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Xu J, Ning T, Zheng J, Pei L, Li J, Wang J, Bai B. Frequency demodulation of an inhomogeneous medium multi-longitudinal mode fiber laser and its sensing application. Opt Express 2022; 30:47659-47671. [PMID: 36558689 DOI: 10.1364/oe.477587] [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] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Accepted: 11/22/2022] [Indexed: 06/17/2023]
Abstract
Dispersion characteristic could be a significant factor, which impacts the beat frequency of Multi-longitudinal mode fiber laser (MMFL). In this paper, the mechanism of beat frequency generation in inhomogeneous medium Multi-longitudinal mode fiber laser is discussed. Compared with cavity length-dependent fiber laser sensing system, the proposed model uses a several-millimeter-Fiber-Bragg-Grating (FBG) as the sensing head, which features both high sensitivity and compact size. We designed an experiment to exhibit possible sensing application based on the proposed theory as well.
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18
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Zhu W, Li J, Yan M, Pei L, Ning T, Zheng J, Wang J. Multiple microwave frequency measurement system based on a sawtooth-wave-modulated non-flat optical frequency comb. Appl Opt 2022; 61:10499-10506. [PMID: 36607112 DOI: 10.1364/ao.476452] [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] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Accepted: 10/27/2022] [Indexed: 06/17/2023]
Abstract
A photonic-assisted instantaneous microwave measurement system, capable of measuring multiple frequency signals, is demonstrated and analyzed. The principle lies in the combination of a channelizer and frequency-to-power mapping. An effective generation method of a non-flat optical frequency comb is proposed based on sawtooth wave modulation, which has more comb lines and adjustable comb spacing. Under this method, two low-speed post-processing devices are utilized to realize frequency measurements up to 32 GHz. The scheme is verified by simulation, and factors affecting system performance are also studied.
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Xu J, Liu L, Ning T, Pei L, Zheng J, Wang J, Li J, Li J, You H. Magnetic field sensor based on resonant cavity dispersion-frequency mapping of a multi-longitudinal mode fiber laser. Appl Opt 2022; 61:10484-10489. [PMID: 36607110 DOI: 10.1364/ao.476219] [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] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Accepted: 11/02/2022] [Indexed: 06/17/2023]
Abstract
A high-sensitivity and compact-size magnetic field sensor based on a multi-longitudinal mode fiber laser is proposed and experimentally demonstrated in this paper. The resonant cavity is composed of two uniform fiber Bragg gratings (FBGs) and a length of Er-doped fiber. A Terfenol-D rod is used as a transducer to stretch the sensing FBG when applying an external magnetic field. Longitudinal mode beat frequency could be generated in the laser and would shift with the deformation of the sensing FBG caused by the external magnetic field. Experimental results show the sensitivity of the proposed sensor is -47.32k H z/m T.
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Wang D, Pei L, Zheng J, Wang J, Xu W, Li J, Ning T. Modeling of a ring-core trench-assisted few-mode BDFA for seven-mode signal gain equalization. Appl Opt 2022; 61:10214-10221. [PMID: 36606783 DOI: 10.1364/ao.477691] [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] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Accepted: 10/31/2022] [Indexed: 06/17/2023]
Abstract
In this paper, a ring-core trench-assisted few-mode bismuth-doped fiber amplifier (BDFA) is simulated on the basis of the three-energy level. The fiber is designed to support four modes of signal group transmission for practical considerations, including LP01, LP11, LP21, and LP31. The results suggest that (1) it is possible to obtain gain equalization of the three signal groups by using the LP21 mode pump independently, where the maximum difference in modal gain (MAX DMG) is about 0.9 dB, except for the LP31 mode signal; (2) by combining the LP01 and LP31 mode pumps, the average gain of the groups increases by 14%, and the MAX DMG decreases by nearly 60% (3.8 to 1.5 dB) compared to the LP01 pump alone; and (3) with the same combination of mode pumps, the ring-core BDFA (1.5 dB) achieves better gain equalization than the single-core BDFA (2.8 dB). The analysis is informative for the future development of a multimode BDFA.
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Tian Z, Pei L, Wang J, Hu K, Xu W, Zheng J, Li J, Ning T. High-performance mode decomposition using physics- and data-driven deep learning. Opt Express 2022; 30:39932-39945. [PMID: 36298935 DOI: 10.1364/oe.470445] [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] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Accepted: 10/05/2022] [Indexed: 06/16/2023]
Abstract
A novel physics- and data-driven deep-learning (PDDL) method is proposed to execute complete mode decomposition (MD) for few-mode fibers (FMFs). The PDDL scheme underlies using the embedded beam propagation model of FMF to guide the neural network (NN) to learn the essential physical features and eliminate unexpected features that conflict with the physical laws. It can greatly enhance the NN's robustness, adaptability, and generalization ability in MD. In the case of obtaining the real modal weights (ρ2) and relative phases (θ), the PDDL method is investigated both in theory and experiment. Numerical results show that the PDDL scheme eliminates the generalization defect of traditional DL-based MD and the error fluctuation is alleviated. Compared with the DL-based MD, in the 8-mode case, the errors of ρ2 and θ can be reduced by 12 times and 100 times for beam patterns that differ greatly from the training dataset. Moreover, the PDDL maintains high accuracy even in the 8-mode MD case with a practical maximum noise factor of 0.12. In terms of adaptation, with a large variation of the core radius and NA of the FMF, the error keeps lower than 0.43% and 2.08% for ρ2 and θ, respectively without regenerating new dataset and retraining NN. The experimental configuration is set up and verifies the accuracy of the PDDL-based MD. Results show that the correlation factor of the real and reconstructed beam patterns is higher than 98%. The proposed MD-scheme shows much potential in the application of practical modal coupling characterization and laser beam quality analysis.
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Zhu W, Li J, Pei L, Ning T, Zheng J, Wang J. Instantaneous microwave frequency measurement with single branch detection based on the birefringence effect. Appl Opt 2022; 61:5894-5901. [PMID: 36255828 DOI: 10.1364/ao.461728] [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] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Accepted: 06/17/2022] [Indexed: 06/16/2023]
Abstract
Instantaneous frequency measurement (IFM) with single branch detection based on the birefringence effect is proposed and experimentally demonstrated. The unknown microwave frequencies are modulated to pump a length of polarization maintaining fiber. Due to the fiber birefringence effect, the input light signal is decomposed into two orthogonal-polarization signals with a relative time delay. After detection, an amplitude comparison function (ACF) is obtained by comparing the alternating-current and direct-current powers. Therefore, no multipath detection is needed so that the electrical variations in the photonic link can be cancelled out in ACF. A theoretical analysis is given to illustrate the mechanism of the proposed IFM system. The disturbances are investigated and discussed in simulation. A proof-of-concept experiment is carried out for verification with a result of ±0.2GHz over 2.2-5.2 GHz.
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Wang Y, Pei L, Wang M, Sun S, Wang S, Zhang Q. Effect of peer support on adults with diabetes-related peripheral neuropathy. Patient Educ Couns 2022; 105:828-834. [PMID: 34373175 DOI: 10.1016/j.pec.2021.07.047] [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: 11/30/2020] [Revised: 06/18/2021] [Accepted: 07/27/2021] [Indexed: 06/13/2023]
Abstract
OBJECTIVE To explore the effect of peer support on exercise self-efficacy, physical activity level, and neuropathic symptoms in patients with diabetes-related peripheral neuropathy (DPN). METHODS A total of 60 adults with DPN were assigned to groups. Patients in the control group received routine education (RE), while patients in the intervention group received peer support (PS) combined with routine diabetes education. Data were collected at baseline and after intervention (12 weeks). RESULTS At 12 weeks, better outcomes were found in the PS group compared to the RE group for the following aspects: exercise self-efficacy, steps, total physical activity, fasting blood glucose and 2-hour postprandial blood glucose. Decreases in scores on Toronto Clinical Scoring System occurred between baseline and post-intervention in both groups. CONCLUSION Peer support is an effective way to improve exercise self-efficacy, number of steps, and general physical activity and to reduce blood glucose for patients with DPN. But the effects of peer support on neuropathic symptoms is are obvious. Further research is needed. PRACTICE IMPLICATIONS As a low-cost, effective education approach, peer support strategies should be integrated into our healthcare system to meet the minimum needs of patients with DPN.
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Affiliation(s)
- Yan Wang
- Nursing Department, The Second Affiliated Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Li Pei
- School of Nursing, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Meifeng Wang
- Nursing Department, YanTai Stomatological Hospital, Shandong Province, China
| | - Shiquan Sun
- Acupuncture and Tuina Department, Tianjin Beichen North Gate Hospital, Tianjin, China
| | - Shuling Wang
- Nursing Department, The Second Affiliated Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Qing Zhang
- Tianjin Medical University, School of Nursing, Tianjin, China.
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Chen QL, Shuai J, Chen WH, Zhang XD, Pei L, Huang GN, Ye H. Impact of growth hormone supplementation on improving oocyte competence in unexplained poor embryonic development patients of various ages. Gynecol Endocrinol 2022; 38:231-237. [PMID: 34766534 DOI: 10.1080/09513590.2021.2000963] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
Abstract
OBJECTIVES To evaluate the effectiveness of Growth hormone (GH) co-treatment during in vitro fertilization (IVF) cycles in women of different ages who manifest unexplained poor embryonic development. METHOD This cohort study included a total of 2647 patients with unexplained poor embryonic development in their previous IVF procedures: 872 women received GH co-treatment and 1775 untreated women served as a control group. Patients were divided into 6 groups according to treatment and stratified by age (<35 years of age, A-GH group and A-control group; 35-40 years, B-GH group and B-control group; and ≥40 years, C-GH group and C-control group). The primary outcome was the oocyte-cleavage rate and the clinical pregnancy rate (CPR). RESULTS The oocyte-cleavage rates among the three age groups were significantly higher in the GH group compared to the same-aged control group. In both group A and group B, there was no significant difference in clinical pregnancy rate between the GH group and controls. However, in patients ≥40 years of age, the clinical pregnancy rate in the GH group was significantly higher than in the control group (31.8% vs. 13.7%, p = 0.019). In the three age groups, there was no significant difference in the live birth rate between the GH group and controls. In the multivariate logistic regression analysis model, in both group A and group B, the number of cleaved embryos was independent predictors for CPR (OR = 1.464, 95% CI: 1.311-1.634; respectively, OR = 1.336, 95% CI: 1.126-1.586); Besides, in both group B and group C, age was independent predictors for CPR (OR = 0.657, 95%CI: 0.555-0.778; respectively, OR = 0.622, 95%CI: 0.391-0.989). However, only in group C, supplementation GH increased CPR as compared with not supplementation GH (OR = 2.339, 95%CI: 1.182-6.670). CONCLUSIONS For patients with unexplained poor embryonic development, supplementation with GH increased the oocyte-cleavage rates in all three age groups, and the clinical pregnancy rate gradually improved commensurate with increasing age. There was no difference in the clinical pregnancy rate in group A and group B, but group C improved significantly. Therefore, compared with patients under 40 years of age, patients ≥40 may benefit more from GH supplementation.
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Affiliation(s)
- Qiao-Li Chen
- Chongqing Health Center for Women and Children, Chongqing Reproduction and Genetics Institute, Chongqing, China
| | - Jun Shuai
- Chongqing Health Center for Women and Children, Chongqing Reproduction and Genetics Institute, Chongqing, China
| | - Wen-Hong Chen
- Chongqing Health Center for Women and Children, Chongqing Reproduction and Genetics Institute, Chongqing, China
| | - Xiao-Dong Zhang
- Chongqing Health Center for Women and Children, Chongqing Reproduction and Genetics Institute, Chongqing, China
| | - Li Pei
- Chongqing Health Center for Women and Children, Chongqing Reproduction and Genetics Institute, Chongqing, China
| | - Guo-Ning Huang
- Chongqing Health Center for Women and Children, Chongqing Reproduction and Genetics Institute, Chongqing, China
| | - Hong Ye
- Chongqing Health Center for Women and Children, Chongqing Reproduction and Genetics Institute, Chongqing, China
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Li J, Lin S, Yan X, Pei L, Wang Z. Adverse Childhood Experiences and Trajectories of ADL Disability among Middle-Aged and Older Adults in China: Findings from the CHARLS Cohort Study. J Nutr Health Aging 2022; 26:1034-1041. [PMID: 36519765 DOI: 10.1007/s12603-022-1863-z] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
OBJECTIVES There is little evidence on the association between adverse childhood experiences (ACEs) and disability trajectories among middle-aged and older adults. This study aimed to investigate the association between ACEs and activities of daily living (ADL) trajectories over eight years of follow-up and the mediation role of different chronic diseases on this relationship. DESIGN Prospective cohort study, eight-year follow-up. SETTING China Health and Retirement Longitudinal Study(CHARLS). PARTICIPANTS A total of 10651 participants age 45 and over from CHARLS 2011 to 2018 were included in this study. MEASUREMENTS Five ACEs exposure groups were formed based on the cumulative ACE scores. A 6-item ADL score was used, including bathing, dressing, eating, getting in/out of bed, using the toilet, and controlling urination, to measure the ADL disability, and the group-based trajectory model (GBTM) was used to identify the ADL disability trajectories. Multinomial logistic regression was performed to investigate the association between ACEs and ADL disability trajectory memberships, and KHB-method was used to estimate the contribution of different chronic diseases on this relationship. RESULTS Of the 10651 participants, 9.64% showed a mild-increasing trajectory in terms of change in ADL score during follow-up, followed by the low-mild trajectory (32.00%) and low-low trajectory (58.36%). Compared with those without ACEs exposure, participants who had ≥4 ACEs were associated with an increased risk of being on low-mild trajectory (OR 1.32, 95%CI:1.11-1.57) and mild-increasing trajectory (OR 1.41, 95%CI: 1.06-1.89), respectively. Besides, mediation analysis revealed chronic diseases had a mediation effect in this association, with the largest effect from arthritis or rheumatism (over 60%), followed by digestive system disease (around 14%), respiratory disease (around 12%), and cardio-metabolic disease (around 5%). CONCLUSION This study suggested that exposure to ACEs was associated with a higher risk of being worse ADL disability trajectories. Moreover, chronic disease accounts for a meaningful proportion of this association. Further studies are needed to clarify how chronic diseases mediate the association between ACEs and ADL disability trajectories.
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Affiliation(s)
- J Li
- Lijun Pei, PhD, Institute of Population Research/China Center on Population Health and development, Peking University, No.5 Yiheyuan Road, Haidian District, Beijing 100871, China, ; Tel and fax: +86 010-62751974
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Luo X, Pei L, He Y, Li F, Han W, Xiong S, Han S, Li J, Zhang X, Huang G, Ye H. High initial FSH dosage reduces the number of available cleavage-stage embryos in a GnRH-antagonist protocol: Real-world data of 8,772 IVF cycles from China. Front Endocrinol (Lausanne) 2022; 13:986438. [PMID: 36325448 PMCID: PMC9618590 DOI: 10.3389/fendo.2022.986438] [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] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Accepted: 09/30/2022] [Indexed: 11/22/2022] Open
Abstract
To evaluate the relationship between the initial follicle stimulating hormone (FSH) dose and the number of available cleavage-stage embryos in in vitro fertilization (IVF) cycles.We included 8772 fresh IVF cycles using a GnRH antagonist protocol at the Genetic and Reproductive Institution of Chongqing, P. R. China, from January 2016 to June 2021.Univariate linear regression was used to evaluate the associations between the initial FSH dosage (≤ 150, 187.5-200, 225, 250, or 300 IU) with the number of available cleavage-stage embryos on day 3. A two-factor linear regression model was applied to calculate the threshold effect of the initial FSH dosage on the number of available cleavage-stage embryos based on a smoothing plot. The initial FSH dose was negatively correlated with the number of available cleavage-stage embryos, independent of female age, body mass index, infertility factors, duration of infertility, anti-Müllerian hormone and basal FSH levels, antral follicle count and the proportions of patients with poor ovarian response or polycystic ovarian syndrome. Using a two-factor linear regression model, we calculated the inflection point to be 200 IU of FSH. The relationship between the initial FSH dose and the number of available cleavage-stage embryos was nonlinear. The initial FSH dose was negatively associated with the number of available cleavage-stage embryos when the initial FSH dose was > 200 IU. Therefore, clinicians should try to avoid unnecessarily increasing the initial FSH dose.
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Affiliation(s)
- Xiu Luo
- Center for Reproductive Medicine, Chongqing Health Center for Women and Children, Chongqing, China
- Key Laboratory of Human Embryo Engineering, Chongqing Maternal and Child Health Care Hospital, Chongqing, China
| | - Li Pei
- Center for Reproductive Medicine, Chongqing Health Center for Women and Children, Chongqing, China
- Key Laboratory of Human Embryo Engineering, Chongqing Maternal and Child Health Care Hospital, Chongqing, China
| | - Yao He
- Center for Reproductive Medicine, Chongqing Health Center for Women and Children, Chongqing, China
| | - Fujie Li
- Center for Reproductive Medicine, Chongqing Health Center for Women and Children, Chongqing, China
| | - Wei Han
- Center for Reproductive Medicine, Chongqing Health Center for Women and Children, Chongqing, China
- Key Laboratory of Human Embryo Engineering, Chongqing Maternal and Child Health Care Hospital, Chongqing, China
| | - Shun Xiong
- Center for Reproductive Medicine, Chongqing Health Center for Women and Children, Chongqing, China
| | - Shubiao Han
- Center for Reproductive Medicine, Chongqing Health Center for Women and Children, Chongqing, China
- Key Laboratory of Human Embryo Engineering, Chongqing Maternal and Child Health Care Hospital, Chongqing, China
| | - Jingyu Li
- Key Laboratory of Human Embryo Engineering, Chongqing Maternal and Child Health Care Hospital, Chongqing, China
| | - Xiaodong Zhang
- Key Laboratory of Human Embryo Engineering, Chongqing Maternal and Child Health Care Hospital, Chongqing, China
| | - Guoning Huang
- Center for Reproductive Medicine, Chongqing Health Center for Women and Children, Chongqing, China
- Key Laboratory of Human Embryo Engineering, Chongqing Maternal and Child Health Care Hospital, Chongqing, China
| | - Hong Ye
- Center for Reproductive Medicine, Chongqing Health Center for Women and Children, Chongqing, China
- Key Laboratory of Human Embryo Engineering, Chongqing Maternal and Child Health Care Hospital, Chongqing, China
- *Correspondence: Hong Ye,
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Chen QL, Shuai J, Pei L, Huang GN, Ye H. [Impact of trigger timing of gonadotropin-releasing hormone antagonist regimen for infertility patients of various ages]. Zhonghua Fu Chan Ke Za Zhi 2021; 56:474-481. [PMID: 34304439 DOI: 10.3760/cma.j.cn112141-20210330-00165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the impact of trigger timing of gonadotropin- releasing hormone (GnRH) antagonist regimen for infertility patients of various ages. Methods: This was a retrospective study, 1 529 infertility patients who receiving GnRH antagonist regimen in Chongqing Health Center for Women and Children from January 2017 to December 2018 were divided into the advance trigger group and the standard trigger group, and further divided into three subgroups according to age:<35 years, 35-40 years,>40 years. The number of retrieved oocytes and transplantable embryos, the clinical pregnancy rate and the live birth rate among patients in the advance trigger group and standard trigger group in various age subgroups were compared. Results: (1) The gonadotropin (Gn) days among the three age subgroups were significantly shorter in the advance trigger group compared to the same-aged standard trigger group (all P<0.01), but only in the 35-40 years and >40 years subgroups, the Gn doses in the advance trigger group [(2 702±551) and (2 780±561) U] were significantly less than those in the standard trigger group (all P<0.01). In the <35 years subgroup, the number of oocytes retrieved and transplantable embryos of the advance trigger group (6.6±4.8 and 2.6±2.7) were significantly less than those of the standard trigger group (all P<0.01), but there was no difference in the number of top-quality embryos (P=0.580); however, in the 35-40 years and >40 years subgroups, there were no significant differences between advance and standard trigger groups in terms of the afore mentioned 3 indicators (all P>0.05), only the numbers of top-quality embryos in the advance trigger group (0.6±1.0 and 0.6±0.9) were significantly higher than those in the standard trigger group (all P<0.01). (2) In the <35 years and 35-40 years subgroups, no significant differences were noted between the advance trigger group and standard trigger group with regard to the clinical pregnancy rate and live birth rate (all P>0.05); but in the >40 years subgroup, the clinical pregnancy rate of the advance trigger group was significantly higher than that of the standard trigger group [33.0% (30/91) vs 19.2% (25/130), P=0.020], and there was no statistical difference in the live birth rate (P=0.064). (3) Multivariate logistic regression analysis showed that trigger timing was an independent predictor of clinical pregnancy rate in the >40 years subgroup (OR=0.334, 95%CI: 0.119-0.937, P=0.037), but not an independent predictor of live birth rate (P>0.05). Conclusions: Advance trigger in the GnRH antagonist protocol for infertility patients >40 years old could effectively reduce Gn times and Gn dosage, increase the number of top-quality embryos, and improve the clinical pregnancy rate. Therefore, compared with patients ≤40 years of age, patients >40 years might benefit more from advance trigger.
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Affiliation(s)
- Q L Chen
- Reproductive Medical Center, Chongqing Health Center for Women and Children, Chongqing 400013, China
| | - J Shuai
- Reproductive Medical Center, Chongqing Health Center for Women and Children, Chongqing 400013, China
| | - L Pei
- Reproductive Medical Center, Chongqing Health Center for Women and Children, Chongqing 400013, China
| | - G N Huang
- Reproductive Medical Center, Chongqing Health Center for Women and Children, Chongqing 400013, China
| | - H Ye
- Reproductive Medical Center, Chongqing Health Center for Women and Children, Chongqing 400013, China
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Zhao Z, Li KP, Wang YY, Pei L, Guan ZW, Jin JY, Zhu J, Zhang JL, Huang F. [The prediction of disease progression by 18Fluorodeoxyglucose-positron emission computed tomography/CT in patients with dermatomyositis and interstitial lung disease]. Zhonghua Nei Ke Za Zhi 2021; 60:661-664. [PMID: 34619844 DOI: 10.3760/cma.j.cn112138-20201119-00954] [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: 06/13/2023]
Abstract
To investigate the predictive value of [18F]fluorodeoxyglucose-positron emission computed tomography(PET)/CT for disease progression in patients with dermatomyositis (DM) and interstitial lung diseases (ILD). Sixty-seven DM patients who underwent [18F] FDG-PET/CT imaging were retrospectively analyzed from January 2012 to September 2017 at PLA General Hospital. Their clinical manifestations and imaging characteristics were recorded. Compared with those chronically progressed (C-ILD), patients with rapid progression (RP-ILD) had significantly higher erythrocyte sedimentation rate (ESR) and standardized uptake value (SUV) in lungs (P<0.05). In patients with RP-ILD, SUV in lungs was positively correlated with age, disease course, and ESR. Receiver operating characteristic curve analysis suggested that when lung SUV cut off value was 2.25, the sensitivity and specificity to predict disease progression was 77.8% and 72.8%, respectively. Old age, longer disease course, low creatine kinase level, higher ESR, and high SUV are prognostic factors for DM-associated ILD.
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Affiliation(s)
- Z Zhao
- Department of Rheumatology and Immunology, PLA General Hospital, Beijing 100853, China
| | - K P Li
- Department of Rheumatology and Immunology, PLA General Hospital, Beijing 100853, China
| | - Y Y Wang
- Department of Rheumatology and Immunology, PLA General Hospital, Beijing 100853, China
| | - L Pei
- Department of Rheumatology and Immunology, PLA General Hospital, Beijing 100853, China
| | - Z W Guan
- Department of Nuclear Medicine, PLA General Hospital, Beijing 100853, China
| | - J Y Jin
- Department of Rheumatology and Immunology, PLA General Hospital, Beijing 100853, China
| | - J Zhu
- Department of Rheumatology and Immunology, PLA General Hospital, Beijing 100853, China
| | - J L Zhang
- Department of Rheumatology and Immunology, PLA General Hospital, Beijing 100853, China
| | - F Huang
- Department of Rheumatology and Immunology, PLA General Hospital, Beijing 100853, China
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Xie Y, Pei L, Zheng J, Zhao Q, Ning T, Li J. Design of steering wheel-type ring depressed-core 10-mode fiber with fully improved mode spacing. Opt Express 2021; 29:15067-15077. [PMID: 33985214 DOI: 10.1364/oe.424554] [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] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Accepted: 04/21/2021] [Indexed: 06/12/2023]
Abstract
We present a steering wheel-type ring depressed-core few-mode fiber (SWTR-DC-FMF) that features a central depressed step-index core and a novel SWTR structure consisted of two symmetrical high-index parts and low-index parts, respectively. The DC and SWTR make great contribution to separate the non-degenerated LP modes and spatial modes in the circular symmetry core, resulting in fully improved mode spacing. The designed fiber is able to support 10 spatial modes with the minimum effective index difference (Min Δneff) between adjacent spatial modes larger than 1.93 × 10-4 and the Min Δneff between adjacent LP modes above 1.51 × 10-3 at the same time, facilitating potential fiber spatial mode multiplexing transmission with less multiple-input multiple-output (MIMO-less) digital signal processing technique. The broadband performance including neff, Δneff, effective mode area (Aeff) and differential mode delay (DMD) is comprehensively investigated over the whole C and L band. Moreover, the birefringence and fabrication tolerance are discussed. The designed fiber targets emerging applications in short-reach weakly coupled space-division multiplexing (SDM) optical networking to increase transmission capacity and spectral efficiency and further reduce the system complexity effectively.
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Luo X, Pei L, Li F, Li C, Huang G, Ye H. Fixed versus flexible antagonist protocol in women with predicted high ovarian response except PCOS: a randomized controlled trial. BMC Pregnancy Childbirth 2021; 21:348. [PMID: 33934703 PMCID: PMC8091520 DOI: 10.1186/s12884-021-03833-2] [Citation(s) in RCA: 3] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Accepted: 04/26/2021] [Indexed: 11/10/2022] Open
Abstract
Background No previous study directly compares the fixed day-5 initiation versus the flexible initiation of GnRH antagonist administration in IVF/ICSI for those patients who are predicted as high ovarian responders without PCOS. To evaluate whether the number of oocytes retrieved is different by using the two GnRH antagonist protocols in Chinese women with predicted high ovarian response except PCOS. Methods A randomized controlled trial of 201 infertile women with predicted high ovarian response except PCOS undergoing in vitro fertilization. Ovary stimulation was performed using recombinant FSH and GnRH antagonists. GnRH antagonist ganirelix (0.25 mg/d) was started either on day 5 of stimulation (fixed group) or when LH was > 10 IU/L, and/or a follicle with mean diameter > 12 mm was present, and/or serum E2 was > 600 pg/ml. Patient monitoring was initiated on day 3 of stimulation in flexible group. Result(s) No significant difference was observed between the fixed and flexible groups regarding the number of oocytes retrieved (16.72 ± 7.25 vs. 17.47 ± 5.88, P = 0.421), the Gonadotropin treatment duration (9.53 ± 1.07 vs. 9.67 ± 1.03, P = 0.346) and total Gonadotropin dose (1427.75 ± 210.6 vs. 1455.94 ± 243.44, P = 0.381). GnRH antagonist treatment duration in fixed protocol was statistically longer than the flexible protocol (6.57 ± 1.17 vs 6.04 ± 1.03, P = 0.001). There was no premature LH surge in either protocol. Conclusion(s) Fixed GnRH antagonist administration on day 5 of stimulation appear to achieve a comparable oocyte retrieved compared with flexible antagonist administration. Trial registration NCT02635607 posted on December 16, 2015 in clinicaltrials.gov.
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Affiliation(s)
- Xiu Luo
- Chongqing Key Laboratory of Human embryo Engineering, Chongqing, China.,Chongqing Clinical Research Center for Reproductive Medicine, Chongqing, China.,Reproductive and Genetic Institute, Chongqing Health Center for Women and Children, Chongqing, China
| | - Li Pei
- Chongqing Clinical Research Center for Reproductive Medicine, Chongqing, China.,Reproductive and Genetic Institute, Chongqing Health Center for Women and Children, Chongqing, China
| | - Fujie Li
- Chongqing Key Laboratory of Human embryo Engineering, Chongqing, China.,Chongqing Clinical Research Center for Reproductive Medicine, Chongqing, China
| | - Chunli Li
- Reproductive and Genetic Institute, Chongqing Health Center for Women and Children, Chongqing, China
| | - Guoning Huang
- Chongqing Key Laboratory of Human embryo Engineering, Chongqing, China.,Chongqing Clinical Research Center for Reproductive Medicine, Chongqing, China.,Reproductive and Genetic Institute, Chongqing Health Center for Women and Children, Chongqing, China
| | - Hong Ye
- Chongqing Key Laboratory of Human embryo Engineering, Chongqing, China. .,Chongqing Clinical Research Center for Reproductive Medicine, Chongqing, China. .,Reproductive and Genetic Institute, Chongqing Health Center for Women and Children, Chongqing, China.
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Li H, Zhao S, Pei L, Qiao Z, Han D, Liu Z, Lian Q, Zhao G, Wang Z. Thermal properties of polybenzoxazine exhibiting improved toughness: Blending with cyclodextrin and its derivatives. HIGH PERFORM POLYM 2021. [DOI: 10.1177/09540083211013091] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Polybenzoxazines are emerging as a class of high-performance thermoset polymers that can find their applications in various fields. However, its practical application is limited by its low toughness. The cyclic β-cyclodextrin and a newly synthesized derivative (β-cyclodextrin-MAH) were separately blended with benzoxazine to improve the toughness of polybenzoxazine. The results revealed that the maximum impact strength of the blend was 12.24 kJ·m−2 and 14.29 kJ·m−2 when 1 wt.% of β-Cyclodextrin and β-Cyclodextrin-MAH, respectively, were used. The strengths were 53% and 86% higher than that of pure polybenzoxazine. The curing reaction, possible chemical structures, and fractured surface were examined using differential scanning calorimetry, Fourier transform infrared spectroscopy, and scanning electron microscopy techniques to understand the mechanism of generation of toughness. The results revealed that the sea-island structure and the presence of hydrogen bonds between polybenzoxazine and β-cyclodextrin and β-cyclodextrin-MAH resulted in the generation of toughness. Furthermore, the curves generated during thermogravimetric analysis did not significantly change, revealing the good thermal properties of the system. The phase-separated structure and the hydrogen bonds present in the system can be exploited to prepare synergistically tough polybenzoxazine exhibiting excellent thermal properties. This can be a potential way of modifying the thermoset resins.
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Affiliation(s)
- Hailong Li
- Research Center for Engineering Technology of Polymeric Composites of Shanxi Province, School of Materials Science and Engineering, North University of China, Taiyuan, People’s Republic of China
| | - Sipei Zhao
- Research Center for Engineering Technology of Polymeric Composites of Shanxi Province, School of Materials Science and Engineering, North University of China, Taiyuan, People’s Republic of China
| | - Li Pei
- Research Center for Engineering Technology of Polymeric Composites of Shanxi Province, School of Materials Science and Engineering, North University of China, Taiyuan, People’s Republic of China
| | - Zihe Qiao
- Research Center for Engineering Technology of Polymeric Composites of Shanxi Province, School of Materials Science and Engineering, North University of China, Taiyuan, People’s Republic of China
| | - Ding Han
- Research Center for Engineering Technology of Polymeric Composites of Shanxi Province, School of Materials Science and Engineering, North University of China, Taiyuan, People’s Republic of China
| | - Zhanxin Liu
- Research Center for Engineering Technology of Polymeric Composites of Shanxi Province, School of Materials Science and Engineering, North University of China, Taiyuan, People’s Republic of China
| | - Qingsong Lian
- Research Center for Engineering Technology of Polymeric Composites of Shanxi Province, School of Materials Science and Engineering, North University of China, Taiyuan, People’s Republic of China
| | - Guizhe Zhao
- Research Center for Engineering Technology of Polymeric Composites of Shanxi Province, School of Materials Science and Engineering, North University of China, Taiyuan, People’s Republic of China
| | - Zhi Wang
- Research Center for Engineering Technology of Polymeric Composites of Shanxi Province, School of Materials Science and Engineering, North University of China, Taiyuan, People’s Republic of China
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Pei L, Zhao S, Li H, Zhang X, Fan X, Wang W, Zhang C, Zhao G, Wang Z. Preparation of low temperature cure polybenzoxazine coating with enhanced thermal stability and mechanical properties by combustion synthesis approach. POLYMER 2021. [DOI: 10.1016/j.polymer.2021.123573] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Wang J, Pei L, Wang J, Ruan Z, Ning T, Li J, Zheng J, Ren G. Graphene-coated double D-type low loss optical fiber modulator. Opt Express 2021; 29:2025-2036. [PMID: 33726404 DOI: 10.1364/oe.413619] [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] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Accepted: 12/24/2020] [Indexed: 06/12/2023]
Abstract
A graphene-coated double D-type low loss all-fiber modulator is proposed. The modulator is improved on the basis of standard fiber. Only the cladding is processed without grinding the original core structure. The upper and lower cladding are cut same distance. This can ensure that the mode field does not deviate in one direction, so that most of the mode field is still tied to the core, which greatly reduces the device loss. The existence of the double graphene layer can also ensure a very excellent modulation efficiency. The calculation results show that the mode loss of our proposed dual-D modulator under X polarization is 0.125 dB/mm, and the mode field mismatch loss is 0.25%. The mode loss in Y polarization is 0.033 dB/mm, and the mode field mismatch loss is 0.32%. When the modulation voltage is 5 V, the modulation depth is 78.4% under the condition of five-layer graphene, while the modulation speed can reach 15.38 GHz. Besides maintaining low modulation voltage and higher modulation efficiency, this structure makes full use of the advantages of good fiber coupling, and will be widely used in future fiber communications and all-fiber systems.
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Pei L, Wang B, Ye J, Hu X, Fu L, Li K, Ni Z, Wang Z, Wei Y, Shi L, Zhang Y, Bai X, Jiang M, Wang S, Ma C, Li S, Liu K, Li W, Cong B. Genome and transcriptome of Papaver somniferum Chinese landrace CHM indicates that massive genome expansion contributes to high benzylisoquinoline alkaloid biosynthesis. Hortic Res 2021; 8:5. [PMID: 33384435 PMCID: PMC7775465 DOI: 10.1038/s41438-020-00435-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 09/10/2020] [Accepted: 10/22/2020] [Indexed: 05/09/2023]
Abstract
Opium poppy (Papaver somniferum) is a source of morphine, codeine, and semisynthetic derivatives, including oxycodone and naltrexone. Here, we report the de novo assembly and genomic analysis of P. somniferum traditional landrace 'Chinese Herbal Medicine'. Variations between the 2.62 Gb CHM genome and that of the previously sequenced high noscapine 1 (HN1) variety were also explored. Among 79,668 protein-coding genes, we functionally annotated 88.9%, compared to 68.8% reported in the HN1 genome. Gene family and 4DTv comparative analyses with three other Papaveraceae species revealed that opium poppy underwent two whole-genome duplication (WGD) events. The first of these, in ancestral Ranunculales, expanded gene families related to characteristic secondary metabolite production and disease resistance. The more recent species-specific WGD mediated by transposable elements resulted in massive genome expansion. Genes carrying structural variations and large-effect variants associated with agronomically different phenotypes between CHM and HN1 that were identified through our transcriptomic comparison of multiple organs and developmental stages can enable the development of new varieties. These genomic and transcriptomic analyses will provide a valuable resource that informs future basic and agricultural studies of the opium poppy.
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Affiliation(s)
- Li Pei
- Institute of Forensic Science, Ministry of Public Security, No. 17 South Muxidi Lane, Xicheng District, 100038, Beijing, People's Republic of China
| | - Baishi Wang
- Institute of Forensic Science, Ministry of Public Security, No. 17 South Muxidi Lane, Xicheng District, 100038, Beijing, People's Republic of China
- College of Forensic Medicine, Hebei Medical University, Hebei Key Laboratory of Forensic Medicine, Innovation Center of Forensic Medical Molecular Identification, No. 361 Zhongshan East Road, 050017, Shijiazhuang, Hebei, People's Republic of China
| | - Jian Ye
- Institute of Forensic Science, Ministry of Public Security, No. 17 South Muxidi Lane, Xicheng District, 100038, Beijing, People's Republic of China
| | - Xiaodi Hu
- Novogene Bioinformatics Institute, Beijing, People's Republic of China
| | - Lihong Fu
- College of Forensic Medicine, Hebei Medical University, Hebei Key Laboratory of Forensic Medicine, Innovation Center of Forensic Medical Molecular Identification, No. 361 Zhongshan East Road, 050017, Shijiazhuang, Hebei, People's Republic of China
| | - Kui Li
- Novogene Bioinformatics Institute, Beijing, People's Republic of China
| | - Zhiyu Ni
- College of Forensic Medicine, Hebei Medical University, Hebei Key Laboratory of Forensic Medicine, Innovation Center of Forensic Medical Molecular Identification, No. 361 Zhongshan East Road, 050017, Shijiazhuang, Hebei, People's Republic of China
- Hebei University, No. 180 Wusidong Road, Baoding, Hebei Province, People's Republic of China
| | - Zhenlong Wang
- School of Life Sciences, Zhengzhou University, No. 100 Science Road, 450001, Zhengzhou, Henan, People's Republic of China
| | - Yujie Wei
- Gansu Academy of Agri-Engineering Technology, No. 234 Xinzhen Road, Huangyang Town, Liangzhou District, 733006, Wuwei, Gansu, People's Republic of China
| | - Luye Shi
- School of Life Sciences, Zhengzhou University, No. 100 Science Road, 450001, Zhengzhou, Henan, People's Republic of China
| | - Ying Zhang
- Institute of Forensic Science, Ministry of Public Security, No. 17 South Muxidi Lane, Xicheng District, 100038, Beijing, People's Republic of China
| | - Xue Bai
- Institute of Forensic Science, Ministry of Public Security, No. 17 South Muxidi Lane, Xicheng District, 100038, Beijing, People's Republic of China
| | - Mengwan Jiang
- School of Life Sciences, Zhengzhou University, No. 100 Science Road, 450001, Zhengzhou, Henan, People's Republic of China
| | - Shuhui Wang
- Wuhan Botanical Garden, Chinese Academy of Sciences, 430074, Wuhan, People's Republic of China
| | - Chunling Ma
- College of Forensic Medicine, Hebei Medical University, Hebei Key Laboratory of Forensic Medicine, Innovation Center of Forensic Medical Molecular Identification, No. 361 Zhongshan East Road, 050017, Shijiazhuang, Hebei, People's Republic of China
| | - Shujin Li
- College of Forensic Medicine, Hebei Medical University, Hebei Key Laboratory of Forensic Medicine, Innovation Center of Forensic Medical Molecular Identification, No. 361 Zhongshan East Road, 050017, Shijiazhuang, Hebei, People's Republic of China
| | - Kaihui Liu
- Institute of Forensic Science, Ministry of Public Security, No. 17 South Muxidi Lane, Xicheng District, 100038, Beijing, People's Republic of China
| | - Wanshui Li
- Institute of Forensic Science, Ministry of Public Security, No. 17 South Muxidi Lane, Xicheng District, 100038, Beijing, People's Republic of China
| | - Bin Cong
- College of Forensic Medicine, Hebei Medical University, Hebei Key Laboratory of Forensic Medicine, Innovation Center of Forensic Medical Molecular Identification, No. 361 Zhongshan East Road, 050017, Shijiazhuang, Hebei, People's Republic of China.
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Zuo ZG, Pei L, Liu XJ, Qiu F. [Lung cancer with intracranial hypotension: a case report]. Zhonghua Zhong Liu Za Zhi 2020; 42:971-972. [PMID: 33256311 DOI: 10.3760/cma.j.cn112152-20190406-00217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Affiliation(s)
- Z G Zuo
- Department of Critical Medicine, the First Hospital of Qinhuangdao, Qinhuangdao 066000, China
| | - L Pei
- Department of Clinical Laboratory, the First Hospital of Qinhuangdao, Qinhuangdao 066000, China
| | - X J Liu
- Department of Critical Medicine, the First Hospital of Qinhuangdao, Qinhuangdao 066000, China
| | - F Qiu
- Department of Critical Medicine, the First Hospital of Qinhuangdao, Qinhuangdao 066000, China
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Xie Y, Pei L, Zheng J, Zhao Q, Ning T, Li J. Impact analysis of a dense hole-assisted structure on crosstalk and bending loss in homogeneous few-mode multi-core fibers. Opt Express 2020; 28:23806-23819. [PMID: 32752372 DOI: 10.1364/oe.400461] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Accepted: 07/17/2020] [Indexed: 06/11/2023]
Abstract
We present a novel dense hole-assisted structure (DHAS) in homogeneous few-mode multi-core fibers (FM-MCFs) for significantly suppressing inter-core crosstalk (XT) and bending loss while realizing a high spatial density in limited cladding diameter. The fabrication methods of DHAS FM-MCFs are illustrated and the equivalent model of DHAS is proposed. To point out the superiority, the XT of a DHAS 7-core 4-LP-mode fiber is investigated by an average power-coupling coefficients analytical expression in DHAS model and the equivalent model, respectively. A simple derived analytical expression for XT estimation in the trench-assisted homogeneous MCFs is introduced to verify the change of XT with fiber parameters in the equivalent model. The results imply that the XT obtained by the equivalent model is in good agreement with the one through DHAS model. Furthermore, the bending loss and chromatic dispersion dependences on DHAS are calculated by the finite element method (FEM). Through numerical simulations, we show that the DHAS has great contribution to meet the XT value requirement of lower than -30 dB/100km and make the bending loss values satisfy the ITU-T recommendations of G. 654 in a 7-core 4-LP-mode fiber with a 125-μm cladding diameter. The designed structure targets applications in space division multiplexing (SDM) fibers with independent transmission channels.
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Tian X, Guo Y, Wang X, Pei L, Wang X, Wu J, Sun S, Li Y, Ning M, Buonanno FS, Xu Y, Song B. Serum soluble ST2 is a potential long-term prognostic biomarker for transient ischaemic attack and ischaemic stroke. Eur J Neurol 2020; 27:2202-2208. [PMID: 32593220 DOI: 10.1111/ene.14419] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2020] [Accepted: 06/22/2020] [Indexed: 12/11/2022]
Abstract
BACKGROUND AND PURPOSE Soluble ST2 (sST2) is a promising biomarker in inflammation, atherosclerosis and cardiovascular diseases. We investigated the association between serum sST2 and poor outcome in patients with transient ischaemic attack (TIA)/ischaemic stroke. METHODS Patients within 24 h after onset and with measured serum sST2 were prospectively enrolled in this study. Poor outcome was a combination of a new stroke event (ischaemic or haemorrhagic) and all-cause death within 90 days and 1 year. The associations of serum sST2 with poor outcome were analysed by Cox proportional hazards. RESULTS Among the 430 patients included, the median (interquartile range) sST2 was 17.72 (9.31-28.84) ng/mL. A total of 19 (4.4%) and 38 (8.8%) patients experienced poor outcome within 90 days and 1 year, respectively. Compared with the lowest sST2 tertile, hazard ratios (HRs) [95% confidence intervals (CI)] for the highest tertile were 5.14 (1.43-18.51) for poor outcome within 90 days and 3.00 (1.29-6.97) at 1 year after multivariate adjustments. Adding sST2 to a prediction model significantly improved risk stratification of poor outcome in TIA/ischaemic stroke, as observed by the continuous net reclassification improvement of 60.98% (95% CI, 15.37-106.6%, P = 0.009) and integrated discrimination improvement of 2.63% (95% CI, 0.08-5.18%, P = 0.043) at 90 days and the continuous net reclassification improvement of 41.68% (95% CI, 8.74-74.61%, P = 0.013) at 1 year. CONCLUSIONS Increased serum sST2 levels in TIA/ischaemic stroke were associated with increased risks of poor outcome within 90 days and 1 year, suggesting that serum sST2 may be a potential long-term prognostic biomarker for TIA/ischaemic stroke.
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Affiliation(s)
- X Tian
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,Henan Key Laboratory of Cerebrovascular Diseases, Zhengzhou, China
| | - Y Guo
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,Henan Key Laboratory of Cerebrovascular Diseases, Zhengzhou, China
| | - X Wang
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,Henan Key Laboratory of Cerebrovascular Diseases, Zhengzhou, China
| | - L Pei
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,Henan Key Laboratory of Cerebrovascular Diseases, Zhengzhou, China
| | - X Wang
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,Henan Key Laboratory of Cerebrovascular Diseases, Zhengzhou, China
| | - J Wu
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,Henan Key Laboratory of Cerebrovascular Diseases, Zhengzhou, China
| | - S Sun
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,Henan Key Laboratory of Cerebrovascular Diseases, Zhengzhou, China
| | - Y Li
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,Henan Key Laboratory of Cerebrovascular Diseases, Zhengzhou, China
| | - M Ning
- Clinical Proteomics Research Centre and Cardio-Neurology Clinic, Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - F S Buonanno
- Clinical Proteomics Research Centre and Cardio-Neurology Clinic, Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Y Xu
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,Henan Key Laboratory of Cerebrovascular Diseases, Zhengzhou, China
| | - B Song
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,Henan Key Laboratory of Cerebrovascular Diseases, Zhengzhou, China
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Song X, Pei L, Zhang Y, Chen X, Zhong Q, Ji Y, Tang J, Feng F, Li B. Functional diversification of three delta-class glutathione S-transferases involved in development and detoxification in Tribolium castaneum. Insect Mol Biol 2020; 29:320-336. [PMID: 31999035 DOI: 10.1111/imb.12637] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [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: 09/23/2019] [Revised: 01/18/2020] [Accepted: 01/21/2020] [Indexed: 06/10/2023]
Abstract
Glutathione S-transferases (GSTs) are members of a multifunctional enzyme superfamily. Forty-one GSTs have been identified in Tribolium castaneum; however, none of the 41 GSTs has been functionally characterized. Here, three delta-class GSTs, TcGSTd1, TcGSTd2 and TcGSTd3, of T. castaneum were successfully cloned and expressed in Escherichia coli. All of the studied GSTs catalysed the conjugation of reduced glutathione with 1-chloro-2,4-dinitrobenzene. Insecticide treatment showed that the expression levels of TcGSTd3 and TcGSTd2 were significantly increased after exposure to phoxim and lambda-cyhalothrin, whereas TcGSTd1 was slightly upregulated only in response to phoxim. A disc diffusion assay showed that overexpression of TcGSTD3, but not TcGSTD1 or TcGSTD2, in E. coli increased resistance to paraquat-induced oxidative stress. RNA interference knockdown of TcGSTd1 caused metamorphosis deficiencies and reduced fecundity by regulating insulin/target-of-rapamycin signalling pathway-mediated ecdysteroid biosynthesis, and knockdown of TcGSTd3 led to reduced fertility and a decreased hatch rate of the offspring, probably caused by the reduced antioxidative activity in the reproductive organs. These results indicate that TcGSTd3 and TcGSTd2 may play vital roles in cellular detoxification, whereas TcGSTd1 may play essential roles in normal development of T. castaneum. These delta-class GSTs in T. castaneum have obtained different functions during the evolution.
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Affiliation(s)
- X Song
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - L Pei
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Y Zhang
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - X Chen
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Q Zhong
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Y Ji
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - J Tang
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, China
| | | | - B Li
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, China
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Gao S, Wang B, Xie S, Xu X, Zhang J, Pei L, Yu Y, Yang W, Zhang Y. A high-quality reference genome of wild Cannabis sativa. Hortic Res 2020; 7:73. [PMID: 32377363 PMCID: PMC7195422 DOI: 10.1038/s41438-020-0295-3] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 03/19/2020] [Accepted: 03/19/2020] [Indexed: 05/02/2023]
Abstract
Cannabis sativa is a well-known plant species that has great economic and ecological significance. An incomplete genome of cloned C. sativa was obtained by using SOAPdenovo software in 2011. To further explore the utilization of this plant resource, we generated an updated draft genome sequence for wild-type varieties of C. sativa in China using PacBio single-molecule sequencing and Hi-C technology. Our assembled genome is approximately 808 Mb, with scaffold and contig N50 sizes of 83.00 Mb and 513.57 kb, respectively. Repetitive elements account for 74.75% of the genome. A total of 38,828 protein-coding genes were annotated, 98.20% of which were functionally annotated. We provide the first comprehensive de novo genome of wild-type varieties of C. sativa distributed in Tibet, China. Due to long-term growth in the wild environment, these varieties exhibit higher heterozygosity and contain more genetic information. This genetic resource is of great value for future investigations of cannabinoid metabolic pathways and will aid in promoting the commercial production of C. sativa and the effective utilization of cannabinoids. The assembled genome is also a valuable resource for intensively and effectively investigating the C. sativa genome further in the future.
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Affiliation(s)
- Shan Gao
- Institute of Forensic Science, Ministry of Public Security, No. 17 South Muxidi Lane, Xicheng District, Beijing, 100038 China
| | - Baishi Wang
- Institute of Forensic Science, Ministry of Public Security, No. 17 South Muxidi Lane, Xicheng District, Beijing, 100038 China
| | - Shanshan Xie
- Beijing Century Legend Bioscience Co., Ltd., Beijing, 102300 China
| | - Xiaoyu Xu
- Institute of Forensic Science, Ministry of Public Security, No. 17 South Muxidi Lane, Xicheng District, Beijing, 100038 China
| | - Jin Zhang
- Institute of Forensic Science, Ministry of Public Security, No. 17 South Muxidi Lane, Xicheng District, Beijing, 100038 China
| | - Li Pei
- Institute of Forensic Science, Ministry of Public Security, No. 17 South Muxidi Lane, Xicheng District, Beijing, 100038 China
| | - Yongyi Yu
- Beijing Century Legend Bioscience Co., Ltd., Beijing, 102300 China
| | - Weifei Yang
- Beijing Century Legend Bioscience Co., Ltd., Beijing, 102300 China
| | - Ying Zhang
- Institute of Forensic Science, Ministry of Public Security, No. 17 South Muxidi Lane, Xicheng District, Beijing, 100038 China
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Li J, Wang C, Pei L, Ning T, Zheng J, He R, Li Y. Generation of an optical triangular-shaped pulse train with variable symmetry by using an I/Q modulator. Opt Lett 2020; 45:1411-1414. [PMID: 32163979 DOI: 10.1364/ol.386910] [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] [Subscribe] [Scholar Register] [Received: 12/27/2019] [Accepted: 02/04/2020] [Indexed: 06/10/2023]
Abstract
A setup for an optical triangular-shaped pulse train with variable symmetry is proposed. The key component is an I/Q (I: in-phase, Q: quadrature phase) modulator. By properly setting the three variables, the optical intensity can be expressed by the sum of infinite sinusoidal harmonics, which indicates the possibility to approximate the asymmetrical waveform. It is found that the scheme is capable for generating an optical triangular-shaped pulse train with a tunable symmetrical coefficient (${20}\% \le \delta \le {80}\% $20%≤δ≤80%) and low fitting error ($\eta \le {6}\% $η≤6%).
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Li F, Pei L, Huang G, Ye H. Influence of omega-3 fatty acid and vitamin co-supplementation on metabolic status in gestational diabetes: A meta-analysis of randomized controlled studies. Eur J Obstet Gynecol Reprod Biol 2020; 247:191-197. [PMID: 32145487 DOI: 10.1016/j.ejogrb.2020.02.024] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [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: 12/02/2019] [Revised: 02/10/2020] [Accepted: 02/13/2020] [Indexed: 12/14/2022]
Abstract
INTRODUCTION Omega-3 fatty acid and vitamin E or D co-supplementation may be an important approach to improve metabolic status in gestational diabetes, but the results are conflicting. This systematic review and meta-analysis was conducted to evaluate the effect of omega-3 fatty acid and vitamin co-supplementation on metabolic status in gestational diabetes. METHODS PubMed, Embase and the Cochrane Central Register of Controlled Trials were searched. Randomized controlled trials (RCTs) assessing the influence of omega-3 fatty acid and vitamin co-supplementation compared with placebo on metabolic status in gestational diabetes were included. Two investigators independently searched articles, extracted data, and assessed the quality of included studies. RESULTS Four RCTs were included in the meta-analysis. Compared with control interventions for gestational diabetes, omega-3 fatty acid and vitamin E or D co-supplementation was associated with significantly reduced fasting plasma glucose [mean difference (MD) -10.47, 95 % confidence interval (CI) -15.33 to -5.61, p < 0.0001], homeostasis model of assessment-insulin resistance (MD -1.6, 95 % CI=-2.44 to -0.77, p = 0.0002), malondialdehyde (MD -1.00, 95 % CI -1.05 to -0.95, p < 0.00001) and triglycerides (MD 26.22, 95 % CI -38.94 to -13.51, p < 0.0001), as well as increased antioxidant capacity (MD 173.51, 95 % CI 164.72-182.30, p < 0.00001), but showed no obvious effect on nitric oxide (MD 5.95, 95 % CI -7.48 to 19.37, p = 0.39) or total cholesterol (MD 1.63, 95 % CI -13.46 to 16.72, p = 0.83). CONCLUSIONS Omega-3 fatty acid and vitamin co-supplementation may have a favourable effect on metabolic status in gestational diabetes.
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Affiliation(s)
- Fujie Li
- Chongqing Key Laboratory of Human Embryo Engineering, Chongqing Reproductive and Genetics Institute, Chongqing Health Center for Women and Children, Chongqing, China
| | - Li Pei
- Chongqing Key Laboratory of Human Embryo Engineering, Chongqing Reproductive and Genetics Institute, Chongqing Health Center for Women and Children, Chongqing, China
| | - Guoning Huang
- Chongqing Key Laboratory of Human Embryo Engineering, Chongqing Reproductive and Genetics Institute, Chongqing Health Center for Women and Children, Chongqing, China
| | - Hong Ye
- Chongqing Key Laboratory of Human Embryo Engineering, Chongqing Reproductive and Genetics Institute, Chongqing Health Center for Women and Children, Chongqing, China.
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Wang J, Pei L, Wang J, Ruan Z, Zheng J, Li J, Ning T. Magnetic field and temperature dual-parameter sensor based on magnetic fluid materials filled photonic crystal fiber. Opt Express 2020; 28:1456-1471. [PMID: 32121856 DOI: 10.1364/oe.377116] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Accepted: 12/20/2019] [Indexed: 05/25/2023]
Abstract
A dual-parameter sensor based on a photonic crystal fiber (PCF) concatenated with a fiber Bragg grating (FBG) is proposed and experimentally demonstrated for simultaneous measurement of magnetic field and temperature. Novel magnetic fluids (MF) with different concentration and surfactant are filled in the air holes of PCF. The magnetic field measurement property is only determined by PCF, while the temperature is co-determined by PCF and FBG. Experimental results show that the wavelength shift has a good linearity corresponding with temperature and magnetic field. Temperature and magnetic field sensitivity are proportional to concentration of MF and are affected by different surfactants. For PCF point, when polyethylene glycol is used as a surfactant and the magnetic fluid concentration is equal to 0.15, the highest magnetic field sensitivity is up to 924.63 pm/mT. The proposed sensor has a high sensitivity as well as cross-sensitivity resistance, which provides a promising candidate for dual-channel filtering or multi-parameter measurement applications.
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Abstract
Benzoxazine is a new kind of thermoset resin with excellent properties, but it suffers from high curing temperature and low char yield in the presence of catalyst without halogen. In(NO3)3 was herein used for the first time to efficiently catalyze the curing reaction of benzoxazine and to elevate the char yield at 800°C. The reaction of benzoxazine was catalyzed by In(NO3)3 after stirring at 35°C for 300 min, and the initial curing temperature decreased to 151°C. Polybenzoxazine/In(NO3)3 showed higher thermal stability and char yield at 800°C (increased by 7.5%) compared with those of polybenzoxazine. The possible pathway of coordination bonding between In3+ and benzoxazine was proposed. In the cross-linking process, two different structures, that is, the N, O-acetal bridge structure and arylamine Mannich bridge structure formed at 35°C, both existed, which ultimately affected the thermal stability of the cured product.
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Affiliation(s)
- Xin Zhang
- Research Center for Engineering Technology of Polymeric Composites of Shanxi Province, School of Materials Science and Engineering, North University of China, Taiyuan, People’s Republic of China
| | - Weihong Hu
- Research Center for Engineering Technology of Polymeric Composites of Shanxi Province, School of Materials Science and Engineering, North University of China, Taiyuan, People’s Republic of China
| | - Li Pei
- Research Center for Engineering Technology of Polymeric Composites of Shanxi Province, School of Materials Science and Engineering, North University of China, Taiyuan, People’s Republic of China
| | - Sipei Zhao
- Research Center for Engineering Technology of Polymeric Composites of Shanxi Province, School of Materials Science and Engineering, North University of China, Taiyuan, People’s Republic of China
| | - Congyun Zhang
- Research Center for Engineering Technology of Polymeric Composites of Shanxi Province, School of Materials Science and Engineering, North University of China, Taiyuan, People’s Republic of China
| | - Zhi Wang
- Research Center for Engineering Technology of Polymeric Composites of Shanxi Province, School of Materials Science and Engineering, North University of China, Taiyuan, People’s Republic of China
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Heng G, Jia J, Li S, Fu G, Wang M, Qin D, Li Y, Pei L, Tian X, Zhang J, Wu Y, Xiang S, Wan J, Zhu W, Zhang P, Zhang Q, Peng X, Wang L, Wang P, Wei Z, Zhang Y, Wang G, Chen X, Zhang C, Sun Y, Zhao W, Fan Y, Yang Z, Chen J, Qian C. Sustained Therapeutic Efficacy of Humanized Anti-CD19 Chimeric Antigen Receptor T Cells in Relapsed/Refractory Acute Lymphoblastic Leukemia. Clin Cancer Res 2019; 26:1606-1615. [PMID: 31732519 DOI: 10.1158/1078-0432.ccr-19-1339] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Revised: 08/16/2019] [Accepted: 11/07/2019] [Indexed: 11/16/2022]
Affiliation(s)
- Gang Heng
- Center of Biological Therapy, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Jiankun Jia
- Center of Biological Therapy, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Shiqi Li
- Center of Biological Therapy, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Gang Fu
- Center of Haematology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Meiling Wang
- Center of Biological Therapy, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Dabing Qin
- Center of Haematology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Yunyan Li
- Center of Biological Therapy, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Li Pei
- Center of Haematology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Xiaobo Tian
- Center of Haematology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Jiasi Zhang
- Center of Haematology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Yi Wu
- Department of Nephrology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Shali Xiang
- Center of Haematology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Jia Wan
- Center of Haematology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Wei Zhu
- Center of Biological Therapy, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Pei Zhang
- Center of Haematology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Qianzhen Zhang
- Center of Biological Therapy, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Xi Peng
- Center of Haematology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Linling Wang
- Center of Biological Therapy, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Ping Wang
- Center of Haematology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Zhihao Wei
- Center of Biological Therapy, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Yingzi Zhang
- Center of Biological Therapy, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Guiqin Wang
- Center of Biological Therapy, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Xue Chen
- Center of Haematology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Chengcheng Zhang
- Center of Biological Therapy, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Yanni Sun
- Center of Haematology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Wenxu Zhao
- Center of Biological Therapy, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Yahan Fan
- Department of Blood Transfusion, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Zhi Yang
- Center of Biological Therapy, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China.
| | - Jieping Chen
- Center of Haematology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China.
| | - Cheng Qian
- Center of Biological Therapy, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China.
- Center for Precision Medicine of Cancer, Chongqing Key Laboratory of Translational Research for Cancer Metastasis and Individualized Treatment, Chongqing University Cancer Hospital, Chongqing, China
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Wang F, Al-Jumayli M, D'Rummo K, Pei L, Huang C. PD01.18 Beneficial Effect of Antibiotic Use in Patients with Stage IV NSCLC Treated with Immune Checkpoint Inhibitors. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.09.054] [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: 10/25/2022]
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Gao X, Ning T, Zheng J, Li J, Pei L, Zhang C, Liu L, He X. Simultaneous measurement of refractive index, strain, and temperature based on a Mach-Zehnder interferometer with hybrid structure optical fiber. Appl Opt 2019; 58:8187-8193. [PMID: 31674494 DOI: 10.1364/ao.58.008187] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Accepted: 09/19/2019] [Indexed: 06/10/2023]
Abstract
An optical fiber sensor based on a Mach-Zehnder interferometer with hybrid structure optical fiber for simultaneous measurement of refractive index (RI), strain, and temperature is proposed and demonstrated. The proposed structure is a hybrid structure based on a non-core fiber combined with few-mode fiber. The possibility of simultaneously measuring RI, strain, and temperature relies on the different sensitivity responses of three resonance peaks in the transmission spectrum. Thus, simultaneous measurement of RI, strain, and temperature is realized by calculating the wavelength shift of the three resonance peaks. The experimental results show that the sensitivities of RI are 22.9 pm/RIU, 24.6 pm/RIU, and 97 pm/RIU when RI changes from 1.3707 to 1.39809, respectively. The sensitivities of strain are $ - {3.5}\,\, \text{pm}/ \unicode{x00B5}\unicode{x03B5}$-3.5pm/µε, $ - {1.9}\,\, \text{pm}/ \unicode{x00B5} \unicode{x03B5}$-1.9pm/µε, and $ - {4.1}\,\, \text{pm}/ \unicode{x00B5} \unicode{x03B5}$-4.1pm/µε in the range from 0 to 1400 pm/µ$\unicode{x03B5}$ε. The sensitivities of temperature ranging from 35°C to 55°C are 162 pm/°C, 194 pm/°C, and 162 pm/°C, respectively. The proposed sensor, with advantages of simple configuration, compact structure, and high sensitivity, exhibits great potential in fields of multi-parameter measurement.
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Li Y, Mahjoubfar A, Chen CL, Niazi KR, Pei L, Jalali B. Deep Cytometry: Deep learning with Real-time Inference in Cell Sorting and Flow Cytometry. Sci Rep 2019; 9:11088. [PMID: 31366998 PMCID: PMC6668572 DOI: 10.1038/s41598-019-47193-6] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [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: 01/08/2019] [Accepted: 07/09/2019] [Indexed: 01/22/2023] Open
Abstract
Deep learning has achieved spectacular performance in image and speech recognition and synthesis. It outperforms other machine learning algorithms in problems where large amounts of data are available. In the area of measurement technology, instruments based on the photonic time stretch have established record real-time measurement throughput in spectroscopy, optical coherence tomography, and imaging flow cytometry. These extreme-throughput instruments generate approximately 1 Tbit/s of continuous measurement data and have led to the discovery of rare phenomena in nonlinear and complex systems as well as new types of biomedical instruments. Owing to the abundance of data they generate, time-stretch instruments are a natural fit to deep learning classification. Previously we had shown that high-throughput label-free cell classification with high accuracy can be achieved through a combination of time-stretch microscopy, image processing and feature extraction, followed by deep learning for finding cancer cells in the blood. Such a technology holds promise for early detection of primary cancer or metastasis. Here we describe a new deep learning pipeline, which entirely avoids the slow and computationally costly signal processing and feature extraction steps by a convolutional neural network that directly operates on the measured signals. The improvement in computational efficiency enables low-latency inference and makes this pipeline suitable for cell sorting via deep learning. Our neural network takes less than a few milliseconds to classify the cells, fast enough to provide a decision to a cell sorter for real-time separation of individual target cells. We demonstrate the applicability of our new method in the classification of OT-II white blood cells and SW-480 epithelial cancer cells with more than 95% accuracy in a label-free fashion.
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Affiliation(s)
- Yueqin Li
- Department of Electrical & Computer Engineering, University of California, Los Angeles, California, 90095, USA.,California NanoSystems Institute, Los Angeles, California, 90095, USA.,Key Lab of All Optical Network & Advanced Telecommunication Network, Ministry of Education, Institute of Lightwave Technology, Beijing Jiaotong University, Beijing, 100044, China
| | - Ata Mahjoubfar
- Department of Electrical & Computer Engineering, University of California, Los Angeles, California, 90095, USA.,California NanoSystems Institute, Los Angeles, California, 90095, USA
| | - Claire Lifan Chen
- Department of Electrical & Computer Engineering, University of California, Los Angeles, California, 90095, USA.,California NanoSystems Institute, Los Angeles, California, 90095, USA
| | - Kayvan Reza Niazi
- California NanoSystems Institute, Los Angeles, California, 90095, USA.,NantWorks, LLC, Culver City, California, 90232, USA.,Department of Bioengineering, University of California, Los Angeles, California, 90095, USA
| | - Li Pei
- Key Lab of All Optical Network & Advanced Telecommunication Network, Ministry of Education, Institute of Lightwave Technology, Beijing Jiaotong University, Beijing, 100044, China
| | - Bahram Jalali
- Department of Electrical & Computer Engineering, University of California, Los Angeles, California, 90095, USA. .,California NanoSystems Institute, Los Angeles, California, 90095, USA. .,Department of Bioengineering, University of California, Los Angeles, California, 90095, USA. .,Department of Surgery, UCLA Geffen School of Medicine, Los Angeles, USA.
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Chen W, Xiong X, Xie B, Ou Y, Hou W, Du M, Chen Y, Chen K, Li J, Pei L, Fu G, Liu D, Huang Y. Pulmonary invasive fungal disease and bacterial pneumonia: a comparative study with high-resolution CT. Am J Transl Res 2019; 11:4542-4551. [PMID: 31396358 PMCID: PMC6684894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2017] [Accepted: 10/22/2018] [Indexed: 06/10/2023]
Abstract
BACKGROUND Early diagnosis of invasive fungal disease (IFD) is challenging. High-resolution computed tomography (CT) may improve IFD diagnosis; however, there are no definitive imaging signs for differentiating between bacterial pneumonia and IFD. METHODS We retrospectively evaluated CT images of 208 patients with IFD (n = 102) or bacterial pneumonia (n = 106). We classified pulmonary opacities as consolidations, ground-glass opacities (GGOs), or nodules and recorded the presence of perinodular ground-glass halos, reversed halo sign (RSH), and cavitation (crescent-shaped or not). RESULTS Consolidation appeared in 83.3% and 92.5% of patients with IFD and bacterial pneumonia, respectively. Multifocal non-segmental consolidation was more common in IFD (48%) than bacterial pneumonia (22.6%; P < 0.05). Segmental or subsegmental consolidation was more common in bacterial pneumonia (43.4%) than IFD (7.8%; P < 0.01). GGOs and nodules were more common in IFD than bacterial pneumonia (60.8% vs. 24.5% and 54.9% vs. 15.1%, respectively; each P < 0.05). Consolidation combined with GGO, nodules, or both GGO and nodules was more frequent in IFD than in bacterial pneumonia (each P < 0.05). Nodules with halo sign (n = 23) appeared in 22.5% and 3.8% of patients with IFD and bacterial pneumonia, respectively. Nodules with RSH appeared only in IFD, and those with cavitation appeared in 11.8% and 1.9% of patients with IFD and bacterial pneumonia, respectively. CONCLUSIONS Consolidation plus GGO and nodules or consolidation plus nodules is suggestive for IFD. Segmental or subsegmental consolidations are more frequent in bacterial pneumonia than in IFD. Large nodules, as well as nodules with halo sign or both small and large nodules, are related to IFD.
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Affiliation(s)
- Wei Chen
- Department of Radiology, Southwest Hospital, Third Military Medical UniversityChongqing 400038, China
| | - Xuanqi Xiong
- Department of Radiology, Southwest Hospital, Third Military Medical UniversityChongqing 400038, China
| | - Bin Xie
- Department of Radiology, Southwest Hospital, Third Military Medical UniversityChongqing 400038, China
| | - Yuan Ou
- Department of Radiology, Southwest Hospital, Third Military Medical UniversityChongqing 400038, China
| | - Wenjing Hou
- Department of Radiology, Southwest Hospital, Third Military Medical UniversityChongqing 400038, China
| | - Mingshan Du
- Department of Radiology, Southwest Hospital, Third Military Medical UniversityChongqing 400038, China
| | - Yongling Chen
- Department of Radiology, Southwest Hospital, Third Military Medical UniversityChongqing 400038, China
| | - Kang Chen
- Department of Radiology, Southwest Hospital, Third Military Medical UniversityChongqing 400038, China
| | - Jing Li
- Department of Radiology, Southwest Hospital, Third Military Medical UniversityChongqing 400038, China
| | - Li Pei
- Department of Hematology, Southwest Hospital, Third Military Medical UniversityChongqing 400038, China
| | - Gang Fu
- Department of Hematology, Southwest Hospital, Third Military Medical UniversityChongqing 400038, China
| | - Dingyuan Liu
- Department of Respiratory Medicine, Southwest Hospital, Third Military Medical UniversityChongqing 400038, China
| | - Ying Huang
- Department of Respiratory Medicine, Southwest Hospital, Third Military Medical UniversityChongqing 400038, China
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Ye H, Luo X, Pei L, Li F, Li C, Chen Y, Zhang X, Huang G. The addition of single dose GnRH agonist to luteal phase support in artificial cycle frozen embryo transfer: a randomized clinical trial. Gynecol Endocrinol 2019; 35:618-622. [PMID: 30700175 DOI: 10.1080/09513590.2018.1563888] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
Abstract
This prospective randomized clinical trial (RCT) was to evaluate the effect of single-dose gonadotrophin-releasing hormone agonist (GnRHa) in artificial cycle frozen-embryo transfer (AC-FET). A total of 868 FET cycles were included and randomized into two groups: Group A (n = 434) received GnRHa 0.1 mg subcutaneous injection on day 3 after embryo transfer (ET); Group B (n = 434) did not receive GnRHa. The demographic characteristics, primary endpoint (implantation rate) and secondary endpoints (chemical pregnancy rate, clinical pregnancy rate, ongoing pregnancy rate) were compared between two groups and subgroups (aged <35 years and 35-37 years). There were no significant differences in terms of the rates of implantation, clinical pregnancy, ongoing pregnancy, and miscarriage between two groups. While, the subgroups analysis showed the implantation rate was significantly increased in advanced age women (35-37 years) in GnRHa group compared with control group (45.3% vs. 27.8%, p = .03). In conclusion, single dose of GnRHa (0.1 mg triptorelin acetate) supplementation 3 days after ET in AC-FET cycles did not show significant benefit on pregnancy outcomes as a whole. However, in ageing women subgroup, the implantation rate was increasing by adding up GnRHa in peri-implantation periods, and this tendency needs to be further demonstrated by RCT with larger sample size.
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Affiliation(s)
- Hong Ye
- a Chongqing Maternity and Children Health Care Hospital , Institute of Genetics and Reproduction , Chongqing , P.R. China
| | - Xiu Luo
- a Chongqing Maternity and Children Health Care Hospital , Institute of Genetics and Reproduction , Chongqing , P.R. China
| | - Li Pei
- a Chongqing Maternity and Children Health Care Hospital , Institute of Genetics and Reproduction , Chongqing , P.R. China
| | - Fujie Li
- a Chongqing Maternity and Children Health Care Hospital , Institute of Genetics and Reproduction , Chongqing , P.R. China
| | - Chunli Li
- a Chongqing Maternity and Children Health Care Hospital , Institute of Genetics and Reproduction , Chongqing , P.R. China
| | - Yueduo Chen
- a Chongqing Maternity and Children Health Care Hospital , Institute of Genetics and Reproduction , Chongqing , P.R. China
| | - Xiaodong Zhang
- a Chongqing Maternity and Children Health Care Hospital , Institute of Genetics and Reproduction , Chongqing , P.R. China
| | - Guoning Huang
- a Chongqing Maternity and Children Health Care Hospital , Institute of Genetics and Reproduction , Chongqing , P.R. China
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Xie Y, Pei L, Zheng J, Zhao Q, Ning T, Sun J. Design and analysis of a combined-ring core weakly coupled few-mode fiber with six linearly polarized modes and an ultra-large effective index difference. Appl Opt 2019; 58:4373-4380. [PMID: 31251245 DOI: 10.1364/ao.58.004373] [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] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Accepted: 04/29/2019] [Indexed: 06/09/2023]
Abstract
The theory and properties of weakly coupled few-mode fiber (FMF) have been investigated by means of mode power distribution. According to that, a novel weakly coupled FMF with a combined-ring core structure has been proposed. To the best of our knowledge, it is the first time a weakly coupled FMF has realized the goal of supporting six modes and ultra-large minimum effective index difference (min Δneff) of 1.83*10-3 between all neighboring modes. The combined-ring core structure evidently relieves the pressure of modifying neff via inserting a single low-index area and a single high-index ring in step-index FMFs. Due to this structure, a weakly coupled FMF design can be realized by the smaller low-index central area (central area radius d=0.82 μm) and lightly doped high-index ring (the refractive index difference between the ring and the core Δn2=0.11%) compared with former designs. The effective area (Aeff) and differential mode delay characteristics of the designed FMF have been optimized. Furthermore, we calculated the bending loss and fiber properties at the C and L bands to prove that our proposed FMF satisfies the requirement of large-capacity mode-division multiplexing optical networking.
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