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Yang ZR, Qin H, Fan JW, Du K, Qi L, Hou D, Jiang H, Zhu J. Acidity-activated aggregation and accumulation of self-complementary zwitterionic peptide-decorated gold nanoparticles for photothermal biofilm eradication. J Colloid Interface Sci 2024; 663:1074-1086. [PMID: 38331692 DOI: 10.1016/j.jcis.2024.02.018] [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: 11/24/2023] [Revised: 01/21/2024] [Accepted: 02/02/2024] [Indexed: 02/10/2024]
Abstract
Drug-resistant biofilm infection is an extremely serious clinical problem, that easily leads to failure of antibiotic treatment. Although gold nanoparticles (AuNPs) as photothermal agents have been widely used in biofilm eradication, there are still challenges to be addressed, such as insignificantly redshifted absorption and slow assembly process of aggregated AuNPs. Herein, we developed an acidity-activated dispersion-to-aggregation transition to enhance the accumulation of self-complementary zwitterionic peptide-decorated AuNPs for photothermal eradication of drug-resistant biofilm infections. AuNPs were decorated with self-complementary zwitterionic peptides (ZP1 and ZP2) coupled with pH-sensitive anhydride (DMA) and pH-insensitive anhydride (SA), respectively. ZP2-decorated AuNPs with DMA modification (AuNP@ZP2(DMA)) exhibited prolonged blood circulation and enhanced accumulation in acidic biofilm microenvironment. Moreover, the electrostatic attraction between self-complementary ligands drove AuNPs to form closely packed aggregates with strong near-infrared absorption, leading to in vivo photoacoustic imaging ability and photothermal effect against drug-resistant bacteria and fungus, as well as microbial biofilms. AuNP@ZP2(DMA) with longer charge domains and a polyethylene glycol oligomer spacer showed greater photothermal antimicrobial and biofilm resistance in vitro and in vivo. This study develops an innovative acidity-activated AuNP photothermal agent, which provides an effective approach for treatment of biofilm infections.
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Affiliation(s)
- Zhuo-Ran Yang
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, China
| | - Huimin Qin
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, China
| | - Jing-Wen Fan
- Department of Radiology, Xijing Hospital, The Forth Military Medical University (FMMU), Xi'an, 710032, China
| | - Kehan Du
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, China
| | - Liya Qi
- SINOPEC (Beijing) Research Institute of Chemical Industry Co., Ltd., Beijing, 100013, China
| | - Dandan Hou
- SINOPEC (Beijing) Research Institute of Chemical Industry Co., Ltd., Beijing, 100013, China.
| | - Hao Jiang
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, China.
| | - Jintao Zhu
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, China.
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Huang J, Li X, Zhan X, Pan S, Pan C, Li J, Fan S, Zhang L, Du K, Du Z, Zhang J, Huang H, Li J, Zhang H, Qin Z. A Streptomyces species from the ginseng rhizosphere exhibits biocontrol potential. Plant Physiol 2024; 194:2709-2723. [PMID: 38206193 DOI: 10.1093/plphys/kiae006] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Revised: 11/27/2023] [Accepted: 11/28/2023] [Indexed: 01/12/2024]
Abstract
Plants and their associated microbes live in complicated, changeable, and unpredictable environments. They usually interact with each other in many ways through multidimensional, multiscale, and multilevel coupling manners, leading to challenges in the coexistence of randomness and determinism or continuity and discreteness. Gaining a deeper understanding of these diverse interaction mechanisms can facilitate the development of data-mining theories and methods for complex systems, coupled modeling for systems with different spatiotemporal scales and functional properties, or even a universal theory of information and information interactions. In this study, we use a "closed-loop" model to present a plant-microbe interaction system and describe the probable functions of microbial natural products. Specifically, we report a rhizosphere species, Streptomyces ginsengnesis G7, which produces polyketide lydicamycins and other active metabolites. Interestingly, these distinct molecules have the potential to function both as antibiotics and as herbicides for crop protection. Detailed laboratory experiments conducted in Arabidopsis (Arabidopsis thaliana), combined with a comprehensive bioinformatics analysis, allow us to rationalize a model for this specific plant-microbe interaction process. Our work reveals the benefits of exploring otherwise neglected resources for the identification of potential functional molecules and provides a reference to better understand the system biology of complex ecosystems.
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Affiliation(s)
- Jiaquan Huang
- Center for Biological Science and Technology, Advanced Institute of Natural Sciences, Beijing Normal University, Zhuhai, Guangdong 519087, China
| | - Xiaojie Li
- Center for Biological Science and Technology, Advanced Institute of Natural Sciences, Beijing Normal University, Zhuhai, Guangdong 519087, China
| | - Xuanlin Zhan
- Center for Biological Science and Technology, Advanced Institute of Natural Sciences, Beijing Normal University, Zhuhai, Guangdong 519087, China
| | - Shiyu Pan
- Center for Biological Science and Technology, Advanced Institute of Natural Sciences, Beijing Normal University, Zhuhai, Guangdong 519087, China
| | - Chao Pan
- Center for Biological Science and Technology, Advanced Institute of Natural Sciences, Beijing Normal University, Zhuhai, Guangdong 519087, China
| | - Jixiao Li
- Center for Biological Science and Technology, Advanced Institute of Natural Sciences, Beijing Normal University, Zhuhai, Guangdong 519087, China
| | - Siting Fan
- Center for Biological Science and Technology, Advanced Institute of Natural Sciences, Beijing Normal University, Zhuhai, Guangdong 519087, China
| | - Liner Zhang
- Center for Biological Science and Technology, Advanced Institute of Natural Sciences, Beijing Normal University, Zhuhai, Guangdong 519087, China
| | - Kehan Du
- Center for Biological Science and Technology, Advanced Institute of Natural Sciences, Beijing Normal University, Zhuhai, Guangdong 519087, China
| | - Zhiying Du
- Center for Biological Science and Technology, Advanced Institute of Natural Sciences, Beijing Normal University, Zhuhai, Guangdong 519087, China
| | - Jiayu Zhang
- Center for Biological Science and Technology, Advanced Institute of Natural Sciences, Beijing Normal University, Zhuhai, Guangdong 519087, China
| | - Han Huang
- Center for Biological Science and Technology, Advanced Institute of Natural Sciences, Beijing Normal University, Zhuhai, Guangdong 519087, China
| | - Jie Li
- Department of Biochemistry and Metabolism, John Innes Centre, Norwich Research Park, Norwich NR4 7UH, UK
| | - Heqian Zhang
- Center for Biological Science and Technology, Advanced Institute of Natural Sciences, Beijing Normal University, Zhuhai, Guangdong 519087, China
| | - Zhiwei Qin
- Center for Biological Science and Technology, Advanced Institute of Natural Sciences, Beijing Normal University, Zhuhai, Guangdong 519087, China
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Yang ZR, Suo H, Fan JW, Lv N, Du K, Ma T, Qin H, Li Y, Yang L, Zhou N, Jiang H, Tao J, Zhu J. Endogenous stimuli-responsive separating microneedles to inhibit hypertrophic scar through remodeling the pathological microenvironment. Nat Commun 2024; 15:2038. [PMID: 38448448 PMCID: PMC10917775 DOI: 10.1038/s41467-024-46328-2] [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: 02/16/2023] [Accepted: 02/22/2024] [Indexed: 03/08/2024] Open
Abstract
Hypertrophic scar (HS) considerably affects the appearance and causes tissue dysfunction in patients. The low bioavailability of 5-fluorouracil poses a challenge for HS treatment. Here we show a separating microneedle (MN) consisting of photo-crosslinked GelMA and 5-FuA-Pep-MA prodrug in response to high reactive oxygen species (ROS) levels and overexpression of matrix metalloproteinases (MMPs) in the HS pathological microenvironment. In vivo experiments in female mice demonstrate that the retention of MN tips in the tissue provides a slowly sustained drug release manner. Importantly, drug-loaded MNs could remodel the pathological microenvironment of female rabbit ear HS tissues by ROS scavenging and MMPs consumption. Bulk and single cell RNA sequencing analyses confirm that drug-loaded MNs could reverse skin fibrosis through down-regulation of BCL-2-associated death promoter (BAD), insulin-like growth factor 1 receptor (IGF1R) pathways, simultaneously regulate inflammatory response and keratinocyte differentiation via up-regulation of toll-like receptors (TOLL), interleukin-1 receptor (IL1R) and keratinocyte pathways, and promote the interactions between fibroblasts and keratinocytes via ligand-receptor pair of proteoglycans 2 (HSPG2)-dystroglycan 1(DAG1). This study reveals the potential therapeutic mechanism of drug-loaded MNs in HS treatment and presents a broad prospect for clinical application.
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Affiliation(s)
- Zhuo-Ran Yang
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan, 430074, China
| | - Huinan Suo
- Department of Dermatology, Union Hospital, Tongji Medical College, HUST, Wuhan, 430022, China
| | - Jing-Wen Fan
- Department of Radiology, Xijing Hospital, The Forth Military Medical University (FMMU), Xi'an, 710032, China
| | - Niannian Lv
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan, 430074, China
| | - Kehan Du
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan, 430074, China
| | - Teng Ma
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan, 430074, China
| | - Huimin Qin
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan, 430074, China
| | - Yan Li
- Department of Dermatology, Union Hospital, Tongji Medical College, HUST, Wuhan, 430022, China
| | - Liu Yang
- Department of Dermatology, Union Hospital, Tongji Medical College, HUST, Wuhan, 430022, China
| | - Nuoya Zhou
- Department of Dermatology, Union Hospital, Tongji Medical College, HUST, Wuhan, 430022, China
| | - Hao Jiang
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan, 430074, China.
| | - Juan Tao
- Department of Dermatology, Union Hospital, Tongji Medical College, HUST, Wuhan, 430022, China.
| | - Jintao Zhu
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan, 430074, China.
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Hou X, Tu Y, Min X, Du K, Li F, Wang J, Wu X. The effect of previous orbital decompression on outcomes of rectus muscle recession surgery in patients with thyroid ophthalmopathy. J Fr Ophtalmol 2024; 47:103924. [PMID: 37775455 DOI: 10.1016/j.jfo.2023.01.045] [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: 12/12/2022] [Revised: 01/30/2023] [Accepted: 01/31/2023] [Indexed: 10/01/2023]
Abstract
PURPOSE To evaluate the effect of previous orbital decompression on outcomes of rectus muscle recession surgery in patients with thyroid-associated ophthalmopathy. METHODS This retrospective study enrolled 55 eyes of 33 patients treated in our hospital for restrictive strabismus caused by thyroid-associated ophthalmopathy. We performed muscle recession for the obviously restricted extraocular muscles, with 6 weeks of follow-up. Surgical outcomes were compared between the orbital decompression group (DG, n=15) and non-orbital decompression group (NDG, n=18). RESULTS A total of 33 patients with Graves' ophthalmopathy who underwent rectus muscle recession surgery were included. Of these, 15 patients had undergone orbital decompression prior to strabismus surgery, and 18 had not. The two groups did not differ in terms of the preoperative horizontal or vertical ocular deviation, degree of restriction of eye movement, degree of diplopia, or mean number of muscles that underwent surgery (P>0.05). There was no significant difference in the preoperative horizontal or vertical ocular deviation, level of eye movement restriction, degree of diplopia and the success rate of the surgery (P>0.05). CONCLUSION Rectus muscle recession surgery in patients with thyroid-associated ophthalmopathy during the quiescent period could improve the ocular deviation and diplopia, and orbital decompression performed before strabismus surgery had no significant effect on surgical technique or outcomes of rectus muscle recession surgery.
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Affiliation(s)
- X Hou
- Eye Center of Xiangya Hospital, Central South University, Changsha, 410008,Hunan Province, China; National Clinical Key Specialty of Ophthalmology,Changsha, 410008,Hunan Province, China; Hunan Key Laboratory of Ophthalmology, Changsha, 410008,Hunan Province, China
| | - Y Tu
- Eye Center of Xiangya Hospital, Central South University, Changsha, 410008,Hunan Province, China; National Clinical Key Specialty of Ophthalmology,Changsha, 410008,Hunan Province, China; Hunan Key Laboratory of Ophthalmology, Changsha, 410008,Hunan Province, China
| | - X Min
- Eye Center of Xiangya Hospital, Central South University, Changsha, 410008,Hunan Province, China; National Clinical Key Specialty of Ophthalmology,Changsha, 410008,Hunan Province, China; Hunan Key Laboratory of Ophthalmology, Changsha, 410008,Hunan Province, China
| | - K Du
- Eye Center of Xiangya Hospital, Central South University, Changsha, 410008,Hunan Province, China; National Clinical Key Specialty of Ophthalmology,Changsha, 410008,Hunan Province, China; Hunan Key Laboratory of Ophthalmology, Changsha, 410008,Hunan Province, China
| | - F Li
- Eye Center of Xiangya Hospital, Central South University, Changsha, 410008,Hunan Province, China; National Clinical Key Specialty of Ophthalmology,Changsha, 410008,Hunan Province, China; Hunan Key Laboratory of Ophthalmology, Changsha, 410008,Hunan Province, China
| | - J Wang
- Eye Center of Xiangya Hospital, Central South University, Changsha, 410008,Hunan Province, China; National Clinical Key Specialty of Ophthalmology,Changsha, 410008,Hunan Province, China; Hunan Key Laboratory of Ophthalmology, Changsha, 410008,Hunan Province, China.
| | - X Wu
- Eye Center of Xiangya Hospital, Central South University, Changsha, 410008,Hunan Province, China; National Clinical Key Specialty of Ophthalmology,Changsha, 410008,Hunan Province, China; Hunan Key Laboratory of Ophthalmology, Changsha, 410008,Hunan Province, China.
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Du K, Yang ZR, Qin H, Ma T, Tang J, Xia J, Zhou Z, Jiang H, Zhu J. Optimized Charge/Hydrophobicity Balance of Antimicrobial Peptides Against Polymicrobial Abdominal Infections. Macromol Biosci 2023:e2300451. [PMID: 37997560 DOI: 10.1002/mabi.202300451] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 11/20/2023] [Indexed: 11/25/2023]
Abstract
Antimicrobial peptides (AMPs) potentially serve as ideal antimicrobial agents for the treatment of polymicrobial abdominal infections due to their broad-spectrum antimicrobial activity and excellent biocompatibility. However, the balance of chain length, positive charges, and hydrophobicity on the antimicrobial activity of AMPs are still far from being optimal. Herein, a series of AMPs ([KX]n -NH2 , X = Ile, Leu or Phe, n = 3, 4, 5, or 6) with varied charges and hydrophobicity for the treatment of polymicrobial abdominal infections are designed. Specifically, [KI]4 -NH2 peptide exhibits the best in vitro antimicrobial activity against Gram-positive and -negative bacteria, as well as fungal strains. Based on the good cell biocompatibility, [KI]4 -NH2 peptide is found to have negligible in vivo toxicity at the dosage of up to 28 mg kg-1 . Furthermore, great in vivo therapeutic efficacy of [KI]4 -NH2 peptide against S. typhimurium is demonstrated in the mice abdominal infection model. The design of short sequence of antimicrobial peptides with a charge/hydrophobicity balanced structures provides a simple and efficient strategy for potential clinical applications of antimicrobial peptide-based biomaterials in a variety of bacterial infection diseases.
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Affiliation(s)
- Kehan Du
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan, 430074, China
| | - Zhuo-Ran Yang
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan, 430074, China
| | - Huimin Qin
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan, 430074, China
| | - Teng Ma
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan, 430074, China
| | - Jiawei Tang
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan, 430074, China
| | - Jianxin Xia
- Win Plus Biotechnology Co., Ltd., Wuhan, 430074, China
| | - Zengtai Zhou
- Win Plus Biotechnology Co., Ltd., Wuhan, 430074, China
| | - Hao Jiang
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan, 430074, China
| | - Jintao Zhu
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan, 430074, China
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Zeng L, Zeng W, Gao Q, Qiao N, Du K, Yue A. Anaemia prevalence and risk factors among children aged 6 to 23 months in rural China. Hong Kong Med J 2023; 29:432-442. [PMID: 37524686 DOI: 10.12809/hkmj219899] [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] [Indexed: 08/02/2023] Open
Abstract
INTRODUCTION Anaemia is a global public health problem among children. However, few studies have examined anaemia prevalence and risk factors among Chinese children of different ages, particularly in poor rural areas. This study investigated these two aspects among children aged 6 to 23 months in poor rural areas of China. METHODS This cross-sectional study included 1132 children aged 6 to 23 months in three prefectures of the Qinba Mountains area. A finger prick blood test for haemoglobin and anaemia was conducted, along with household surveys of socio-demographic characteristics, illness characteristics, and feeding practices. Multiple linear and logistic regression analyses were used to determine predictors of anaemia. RESULTS Overall, 42.6% of children in the study displayed anaemia. Children aged 6 to 11 months had the highest anaemia prevalence (53.6%). Anaemia risk factors differed among age-groups and throughout the overall sample. Bivariate and multivariable regression results showed that continued breastfeeding, any history of formula feeding, and consumption of iron-rich or iron-fortified foods were prominent risk factors for anaemia. However, continued breastfeeding and any history of formula feeding had the greatest impact across age-groups (both P<0.05). CONCLUSION Anaemia remains a severe public health problem among children aged 6 to 23 months in rural China. Healthy feeding practices, nutritional health knowledge, and nutrition improvement projects are needed to reduce the burden of anaemia among children in rural areas of China.
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Affiliation(s)
- L Zeng
- Center for Experimental Economics in Education, Shaanxi Normal University, Xi'an, China
| | - W Zeng
- Center for Experimental Economics in Education, Shaanxi Normal University, Xi'an, China
| | - Q Gao
- Center for Experimental Economics in Education, Shaanxi Normal University, Xi'an, China
| | - N Qiao
- Center for Experimental Economics in Education, Shaanxi Normal University, Xi'an, China
| | - K Du
- Center for Experimental Economics in Education, Shaanxi Normal University, Xi'an, China
| | - A Yue
- Center for Experimental Economics in Education, Shaanxi Normal University, Xi'an, China
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Forgie K, Watkins A, Du K, Ribano A, Freed D, Nagendran J. 24-Hour Negative Pressure Ventilation Ex-Situ Lung Perfusion with Transplantation in a Porcine Model. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.1558] [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: 04/05/2023] Open
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Forgie K, Du K, Ribano A, Watkins A, Freed D, Nagendran J. Mild Permissive Alkalosis Improves Outcomes in Porcine Negative Pressure Ventilation Ex-Situ Lung Perfusion. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.887] [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: 04/05/2023] Open
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Ding Y, Guan H, Du K, Zhang Y, Wang Z, Shi Y. Asthenopia prevalence and vision impairment severity among students attending online classes in low-income areas of western China during the COVID-19 pandemic. Hong Kong Med J 2023; 29:150-157. [PMID: 37088700 DOI: 10.12809/hkmj219864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/25/2023] Open
Abstract
INTRODUCTION This study explored the impact of online learning during the coronavirus disease 2019 (COVID-19) pandemic on asthenopia and vision impairment in students, with the aim of establishing a theoretical basis for preventive approaches to vision health. METHODS This balanced panel study enrolled students from western rural China. Participant information was collected before and during the COVID-19 pandemic via questionnaires administered at local vision care centres, along with clinical assessments of visual acuity. Paired t tests and fixed-effects models were used to analyse pandemic-related differences in visual status. RESULTS In total, 128 students were included (mean age before pandemic, 11.82 ± 1.46 years). The mean total screen time was 3.22 ± 2.90 hours per day during the pandemic, whereas it was 1.97 ± 1.90 hours per day in the pre-pandemic period (P<0.001). Asthenopia prevalence was 55% (71/128) during the pandemic, and the mean visual acuity was 0.81 ± 0.30 logarithm of the minimum angle of resolution; these findings indicated increasing vision impairment, compared with the pre-pandemic period (both P<0.001). Notably, asthenopia prevalence increased by two- to three-fold, compared with the pre-pandemic period. An increase in screen time while learning was associated with an increase in asthenopia prevalence (P=0.034). CONCLUSION During the COVID-19 pandemic, students spent more time on online classes, leading to worse visual acuity and vision health. Students in this study reported a significant increase in screen time, which was associated with increasing asthenopia prevalence and worse vision impairment. Further research is needed regarding the link between online classes and vision problems.
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Affiliation(s)
- Y Ding
- Center for Experimental Economics for Education, Shaanxi Normal University, Xi'an, China
| | - H Guan
- Center for Experimental Economics for Education, Shaanxi Normal University, Xi'an, China
| | - K Du
- College of Economics, Xi'an University of Finance and Economics, Xi'an, China
| | - Y Zhang
- Center for Experimental Economics for Education, Shaanxi Normal University, Xi'an, China
| | - Z Wang
- Center for Experimental Economics for Education, Shaanxi Normal University, Xi'an, China
| | - Y Shi
- Center for Experimental Economics for Education, Shaanxi Normal University, Xi'an, China
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Forgie K, Watkins A, Du K, Ribano A, Freed D, Nagendran J. Batch Replacement of Cellular Perfusate Does Not Improve Outcomes in a Model of 24-Hour Negative Pressure Ventilation Ex-Situ Lung Perfusion with Transplantation. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.886] [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: 04/05/2023] Open
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Forgie K, Ribano A, Du K, Watkins A, Freed D, Nagendran J. Negative Pressure Ventilation Ex-Situ Lung Perfusion Successfully Preserves Porcine Lungs and Rejected Human Lungs for 36-Hours. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.037] [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: 04/05/2023] Open
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12
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Qin H, Yang ZR, lv N, Ma T, Du K, Xiong J, Jiang H, Zhu J. pH-induced reversible self-assembly of gold nanoparticles functionalized with self-complementary zwitterionic peptides for near-infrared photothermal antibacterial treatment. NEW J CHEM 2023. [DOI: 10.1039/d3nj00145h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
Abstract
Aggregated gold nanoparticles (AuNPs) in response to the acidic microenvironment of bacterial infection sites upon near-infrared (NIR) light irradiation provides a facile approach against bacterial infection. Generally, the aggregation of...
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13
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Xiong J, Yang ZR, Lv N, Du K, Suo H, Du S, Tao J, Jiang H, Zhu J. Self-adhesive Hyaluronic Acid/Antimicrobial Peptide Composite Hydrogel with Antioxidant Capability and Photothermal Activity for Infected Wound Healing. Macromol Rapid Commun 2022; 43:e2200176. [PMID: 35451187 DOI: 10.1002/marc.202200176] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 04/13/2022] [Indexed: 11/06/2022]
Abstract
Bacterial infection can delay wound healing, causing wounds to deteriorate and even threatening the patient's life. Recently, although many composite hydrogels as wound dressing have been developed, it is still highly desired to construct photothermal hydrogels with antimicrobial and antioxidant properties to accelerate the infected wound healing. In this work, we develop a hyaluronic acid (HA)-based composite hydrogel consisting of a dopamine-substituted antimicrobial peptide (DAP) and Iron (III) ions, which exhibits photothermal-assisted promotion and acceleration of healing process of bacteria-infected wounds. DAP, serving as both antimicrobial agent and ROS-scavenger, forms Schiff's base bonds with aldehyde hyaluronic acid (AHA) and iron-catechol coordination bonds to reinforce the composite hydrogel. The presence of Fe3+ can also promote covalent polymerization of dopamine, which endows the hydrogel with photothermal capacity. The in vitro and in vivo experiments prove that the composite hydrogel can effectively accelerate the infected wound healing process, including antibacterial, accelerated collagen deposition and re-epithelization. This study suggests that the multifunctional composite hydrogel possesses remarkable potential for bacteria-infected wound healing by combining inherent antimicrobial activity, antioxidant capability and photothermal effect. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Jingyi Xiong
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan, 430074, China
| | - Zhuo-Ran Yang
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan, 430074, China
| | - Niannian Lv
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan, 430074, China
| | - Kehan Du
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan, 430074, China
| | - Huinan Suo
- Department of Dermatology, Union Hospital, Tongji Medical College, HUST, Wuhan, 430022, China
| | - Shuo Du
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan, 430074, China
| | - Juan Tao
- Department of Dermatology, Union Hospital, Tongji Medical College, HUST, Wuhan, 430022, China
| | - Hao Jiang
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan, 430074, China
| | - Jintao Zhu
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan, 430074, China
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Du K, Huang J, Guan H, Zhao J, Zhang Y, Shi Y. Teacher-to-parent communication and vision care-seeking behaviour among primary school students. Hong Kong Med J 2022; 28:152-160. [PMID: 35332875 DOI: 10.12809/hkmj208820] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
INTRODUCTION To determine the associations between teacher-to-parent communication and vision care-seeking behaviour among students. METHODS This cross-sectional study included 19 934 students from 252 primary schools in two prefectures in western China. Information regarding the sampled students was collected through questionnaires and vision examinations. Eligible students with uncorrected refractive error were allocated to four groups according to whether and how parents were informed about vision problems in their children: uninformed, informed by only teachers or only students, or informed by both. The relationship between teacher-to-parent communication and vision care-seeking behaviour was analysed by multiple logistic regression. RESULTS Among valid responses (n=2922) analysed, 42.3% (n=1235) of parents were not informed about vision problems in their children. Teacher-to-parent communication enabled 35.9% (n=1050) of parents to learn about vision problems in their children. When only teachers informed parents, the odds of students having refraction examinations (odds ratio [OR]=1.499; P=0.002) and spectacles ownership (OR=1.755; P=0.002) were significantly higher than for students in the uninformed group. When both students and teachers informed parents, the odds of students having refraction examinations (OR=5.565; P<0.001) and spectacles ownership (OR=7.935; P<0.001) were highest. CONCLUSIONS Knowledge of vision problems is an essential step in vision care for students. Teacherto- parent communication concerning vision problems is positively associated with the rate of vision care-seeking behaviour. Teacher-to-parent communication provides an important route for parents to learn about vision problems in their children.
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Affiliation(s)
- K Du
- Center for Experimental Economics in Education, Shaanxi Normal University, Xi'an, China
| | - J Huang
- College of Economics and Management, China Agricultural University, Beijing, China
| | - H Guan
- Center for Experimental Economics in Education, Shaanxi Normal University, Xi'an, China
| | - J Zhao
- Center for Experimental Economics in Education, Shaanxi Normal University, Xi'an, China
| | - Y Zhang
- Center for Experimental Economics in Education, Shaanxi Normal University, Xi'an, China
| | - Y Shi
- Center for Experimental Economics in Education, Shaanxi Normal University, Xi'an, China
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15
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Wei N, Hou J, Chen J, Dai M, Du K, Wang S, Ni Q. Sentinel lymph node biopsy with carbon nanoparticle suspension after neoadjuvant chemotherapy for breast cancer patients. Ann R Coll Surg Engl 2021; 103:752-756. [PMID: 34448655 PMCID: PMC10750766 DOI: 10.1308/rcsann.2021.0084] [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] [Accepted: 10/09/2020] [Indexed: 11/22/2022] Open
Abstract
INTRODUCTION The aim of the study was to explore the feasibility of performing sentinel lymph node biopsy (SLNB) using a carbon nanoparticle suspension (CNPS) after neoadjuvant chemotherapy in breast cancer patients. METHODS Some 152 patients diagnosed with primary breast cancer (cT1-3N0-2M0) were recruited. Patients were divided into two groups according to axillary lymph node (ALN) status after four to six cycles of neoadjuvant chemotherapy. All patients received a CNPS injection, after which SLNB and axillary lymph node dissection (ALND) were performed. RESULTS Sentinel lymph nodes (SLN) of 143 patients were identified; with an accuracy rate of 94.4% and a false-negative rate of 9.9%. Group A included 67 patients, and the detection, accuracy and false-negative rates within this group were 95.5%, 96.9% and 6.7%, respectively. The corresponding rates for group B (85 patients) were 92.9%, 92.4% and 11.8%, respectively. CONCLUSIONS CNPS is an ideal tracer for improving the detection rate of SLN and can be used to determine SLN status following neoadjuvant chemotherapy.
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Affiliation(s)
- N Wei
- Guizhou Provincial People's
Hospital, Guiyang, China
| | - J Hou
- Guizhou Provincial People's
Hospital, Guiyang, China
| | | | - M Dai
- Guizhou Provincial People's
Hospital, Guiyang, China
| | - K Du
- Guizhou Provincial People's
Hospital, Guiyang, China
| | - S Wang
- Guizhou Provincial People's
Hospital, Guiyang, China
| | - Q Ni
- Guizhou Provincial People's
Hospital, Guiyang, China
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16
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Fu F, Li LS, Du K, Li R, Yu QX, Wang D, Lei TY, Deng Q, Nie ZQ, Zhang WW, Yang X, Han J, Zhen L, Pan M, Zhang LN, Li FC, Zhang YL, Jing XY, Li DZ, Liao C. [Analysis of families with fetal congenital abnormalities but negative prenatal diagnosis by whole exome sequencing]. Zhonghua Fu Chan Ke Za Zhi 2021; 56:458-466. [PMID: 34304437 DOI: 10.3760/cma.j.cn112141-20210118-00028] [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 evaluate the value of whole exome sequencing (WES) in prenatal clinical application. Methods: A total of 1 152 cases of congenital abnormal [including structural malformation, nuchal translucency (NT) thickening and intrauterine growth restriction] with traditional prenatal diagnosis [including G-band karyotype analysis and chromosome microarray analysis (CMA)] negative were analyzed. The congenital abnormal fetuses were divided into retrospective group and prospective group according to the time of WES detection, that is whether the pregnancy termination or not. According to the specific location of fetal malformation and their family history, the cohort was divided into subgroups. The clinical prognosis of all fetuses were followed up, and the effect of WES test results on pregnancy decision-making and clinical intervention were analyzed. According to the follow-up results, the data of fetuses with new phenotypes in the third trimester or after birth were re-analyzed. Results: Among 1 152 families who received WES, 5 families were excluded because of nonbiological parents. Among the remaining 1 147 families, 152 fetuses obtained positive diagnosis (13.3%,152/1 147), including 74 fetuses in the retrospective group (16.1%,74/460) and 78 fetuses in the prospective group (11.4%,78/687). In fetuses with negative CMA and G-band karyotype analysis results but new phenotypes in the third trimester or after birth, the positive rate by WES data re-analysis was 4.9% (8/163). A total of 34 (21.3%, 34/160) fetuses were directly affected by the corresponding positive molecular diagnosis. Among 68 cases of live births with diagnostic variation grade 4, 29 cases (42.7%, 29/68) received appropriate medical intervention through rapid review of WES results. Conclusions: WES could increase the detection rate of abnormal fetuses with negative G-banding karyotype analysis and CMA by 13.3%. Prenatal WES could guide pregnancy decision-making and early clinical intervention. It might be an effective strategy to pay attention to the special follow-up of the third trimester and postnatal fetus and to re-analyze the WES data.
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Affiliation(s)
- F Fu
- Prenatal Diagnostic Center, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou 510623, China
| | - L S Li
- Prenatal Diagnostic Center, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou 510623, China
| | - K Du
- Prenatal Diagnostic Center, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou 510623, China
| | - R Li
- Prenatal Diagnostic Center, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou 510623, China
| | - Q X Yu
- Prenatal Diagnostic Center, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou 510623, China
| | - D Wang
- Prenatal Diagnostic Center, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou 510623, China
| | - T Y Lei
- Prenatal Diagnostic Center, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou 510623, China
| | - Q Deng
- Prenatal Diagnostic Center, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou 510623, China
| | - Z Q Nie
- Guangdong Institute of Cardiovascular Disease, Guangdong Provincial People's Hospital, Guangzhou 510080, China
| | - W W Zhang
- Prenatal Diagnostic Center, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou 510623, China
| | - X Yang
- Prenatal Diagnostic Center, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou 510623, China
| | - J Han
- Prenatal Diagnostic Center, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou 510623, China
| | - L Zhen
- Prenatal Diagnostic Center, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou 510623, China
| | - M Pan
- Prenatal Diagnostic Center, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou 510623, China
| | - L N Zhang
- Prenatal Diagnostic Center, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou 510623, China
| | - F C Li
- Prenatal Diagnostic Center, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou 510623, China
| | - Y L Zhang
- Prenatal Diagnostic Center, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou 510623, China
| | - X Y Jing
- Prenatal Diagnostic Center, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou 510623, China
| | - D Z Li
- Prenatal Diagnostic Center, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou 510623, China
| | - C Liao
- Prenatal Diagnostic Center, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou 510623, China
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Zhao N, Yu MJ, Xu J, Wang HY, Liang B, Ding L, Zhang YX, Du K, Leng BL. microRNA-29b mediates Th17/Treg imbalance in chronic obstructive pulmonary disease by targeting IL-22. J BIOL REG HOMEOS AG 2021; 35:987-999. [PMID: 34159768 DOI: 10.23812/21-15-a] [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] [Key Words] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Chronic obstructive pulmonary disease (COPD) represents a chronic inflammatory disorder of the airways induced mainly by cigarette smoking. In the current study, cigarette smoke extract (CSE) was used to develop an in vitro COPD model using human bronchial epithelium (HBE) cells to expound the possible role of microRNA-29b (miR-29b) in COPD. Firstly, miR-29b and interleukin (IL)-22 expression was assessed in serum of 20 healthy non-smokers, 20 healthy smokers and 20 COPD patients as well as CSE-treated HBE cells. Then, miR-29b and IL-22 expression was altered to evaluate their functions in Th17/Treg ratio. miR-29b inhibited Th17/Treg ratio and levels of IL-22; whereas overexpression of IL-22 reversed these trends. Moreover, rescue experiments found that IL-22 neutralized the repressive effects of miR-29b on Th17/Treg ratio and inflammatory response. Finally, we found that miR-29b blocked the JAK/STAT3 pathway in CSE-treated HBE cells. These data highlighted that miR-29bs modulated Th17/Treg imbalance in CSE-induced experimental COPD through inhibition of IL-22-dependent JAK/STAT3 pathway.
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Affiliation(s)
- N Zhao
- Department of Respiratory Medicine, Hangzhou Third Hospital, Hangzhou, Zhejiang, P.R. China
| | - M J Yu
- Department of Respiratory Medicine, Hangzhou Third Hospital, Hangzhou, Zhejiang, P.R. China
| | - J Xu
- Department of Respiratory Medicine, Hangzhou Third Hospital, Hangzhou, Zhejiang, P.R. China
| | - H Y Wang
- Department of Respiratory Medicine, Hangzhou Third Hospital, Hangzhou, Zhejiang, P.R. China
| | - B Liang
- Department of Respiratory Medicine, Hangzhou Third Hospital, Hangzhou, Zhejiang, P.R. China
| | - L Ding
- Department of Respiratory Medicine, Hangzhou Third Hospital, Hangzhou, Zhejiang, P.R. China
| | - Y X Zhang
- Department of Respiratory Medicine, Hangzhou Third Hospital, Hangzhou, Zhejiang, P.R. China
| | - K Du
- Department of Respiratory Medicine, Hangzhou Third Hospital, Hangzhou, Zhejiang, P.R. China
| | - B L Leng
- Department of Respiratory Medicine, Hangzhou Third Hospital, Hangzhou, Zhejiang, P.R. China
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Chen H, Wu L, Li X, Zhu Y, Du K, Wang W, Xu C. P53.06 Crizotinib Induces Apoptosis of Lung Cancer Cells Through JAK-STAT Pathway. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.933] [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: 10/21/2022]
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Zhai Z, Jiang L, Ye Y, Li X, Lan G, Chen H, Huang L, Zhu Y, Du K, Wang W, Xu C. P23.03 The New Therapy on Esophageal Leiomyosarcoma in the Upper Esophagus. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.608] [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: 10/21/2022]
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Huang L, Chen H, Li X, Lan G, Zhai Z, Zhu Y, Du K, Wang W, Xu C, Fang M. P38.08 Clinical Features and Survival Risk Factors of Lung Lymphoepithelioma-Like Carcinoma Based on the SEER Database Analysis. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.789] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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21
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Chen H, Wang W, Li X, Xu C, Zhu Y, Du K, Fang M. P76.02 Hepatoid Adenocarcinoma of the Lung With EGFR Mutation and the Response to Tyrosine Kinase Inhibitor. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.1059] [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: 10/21/2022]
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22
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Lan G, Wang W, Zhai Z, Li X, Chen H, Huang L, Zhu Y, Du K, Xu C. P64.01 MiRNAs in Exosomes Isolated From the Blood of Non-Small Cell Lung Cancer Patients: Biomarkers for Lung Cancer Prediction and Prognosis. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.991] [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: 10/21/2022]
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Zhao J, Guan H, Du K, Wang H, Boswell M, Shi Y, Rozelle S, Congdon N, Osborn A. Visual impairment and spectacles ownership among upper secondary school students in northwestern China. Hong Kong Med J 2020; 26:35-43. [PMID: 32051332 DOI: 10.12809/hkmj197926] [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] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023] Open
Abstract
PURPOSE To assess the prevalence of visual impairment and spectacles ownership among academic and vocational upper secondary school students in rural China. METHODS This cross-sectional study included 5583 students from four academic upper secondary schools (AUSSs) and two vocational upper secondary schools (VUSSs) in Mei and Qianyang counties, Baoji Prefecture, Shaanxi Province. In March and April 2016, students underwent assessment of visual acuity (VA) and completed a questionnaire regarding spectacles use and family characteristics. Students with visual impairment (presenting VA ≤6/12 in the better eye) and students needing spectacles (uncorrected VA ≤6/12 in the better eye, which could be improved to >6/12 with refraction) were identified. RESULTS Among 5583 students (54% boys, mean age 16.4±1.0 years) in grades 10 and grade 11 attending AUSSs (n=4549) and VUSSs (n=1034), visual impairment was detected in 4026 students. Among the AUSS students, 3425 (75%) needed spectacles; 2551 (75%) had them. Among the VUSS students, 601 (58%) needed spectacles; this proportion was significantly smaller (P=0.004), as was the proportion who had spectacles (n=212, 35%, P<0.001), compared with the AUSS students. Multivariate analysis showed that ownership of spectacles among children who needed them was associated with worse uncorrected VA (P<0.001), male sex (P<0.001), and residence in an urban area (P<0.034). Spectacles ownership was also strongly associated with AUSS education (P<0.001). CONCLUSION There is a high rate of unmet need in visual care among upper secondary school students. Lack of spectacles ownership among children who needed them was significantly associated with VUSS education.
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Affiliation(s)
- J Zhao
- Center for Experimental Economics in Education, Shaanxi Normal University, Xi'an, China
| | - H Guan
- Center for Experimental Economics in Education, Shaanxi Normal University, Xi'an, China
| | - K Du
- Center for Experimental Economics in Education, Shaanxi Normal University, Xi'an, China
| | - H Wang
- Freeman Spogli Institute for International Studies, Stanford University, Stanford, California, United States
| | - M Boswell
- Freeman Spogli Institute for International Studies, Stanford University, Stanford, California, United States
| | - Y Shi
- Center for Experimental Economics in Education, Shaanxi Normal University, Xi'an, China
| | - S Rozelle
- Freeman Spogli Institute of International Studies, Stanford University, Stanford, California, United States
| | - N Congdon
- Centre for Public Health, Queen's University Belfast, Belfast, United Kingdom
- Orbis International, New York, United States
- Zhongshan Ophthalmic Center, Guangzhou, China
| | - A Osborn
- Center for Experimental Economics in Education, Shaanxi Normal University, Xi'an, China
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Du K, Ren AY, Cai MC, Wang GZ, Jia XB, Hu SQ, Wang J, Chen SY, Lai SJ. Identification of long non-coding RNAs in the early growth stage of Holstein mammary gland. The European Zoological Journal 2020. [DOI: 10.1080/24750263.2020.1747557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/09/2022] Open
Affiliation(s)
- K. Du
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, China
| | - A.-Y. Ren
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, China
| | - M.-C. Cai
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, China
- College of Landscape Architecture and Life Science/Institute of Special Plants, Chongqing University of Arts and Sciences, Chongqing, China
| | - G.-Z. Wang
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, China
- The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, China
| | - X.-B. Jia
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, China
| | - S.-Q. Hu
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, China
| | - J. Wang
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, China
| | - S.-Y. Chen
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, China
| | - S.-J. Lai
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, China
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Du K, Zhang M, Dai C, Zhou ZN, Xie YW, Ren ZH, Tian H, Chen LQ, Van Tendeloo G, Zhang Z. Manipulating topological transformations of polar structures through real-time observation of the dynamic polarization evolution. Nat Commun 2019; 10:4864. [PMID: 31653843 PMCID: PMC6814840 DOI: 10.1038/s41467-019-12864-5] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [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: 03/04/2019] [Accepted: 09/30/2019] [Indexed: 12/01/2022] Open
Abstract
Topological structures based on controllable ferroelectric or ferromagnetic domain configurations offer the opportunity to develop microelectronic devices such as high-density memories. Despite the increasing experimental and theoretical insights into various domain structures (such as polar spirals, polar wave, polar vortex) over the past decade, manipulating the topological transformations of polar structures and comprehensively understanding its underlying mechanism remains lacking. By conducting an in-situ non-contact bias technique, here we systematically investigate the real-time topological transformations of polar structures in PbTiO3/SrTiO3 multilayers at an atomic level. The procedure of vortex pair splitting and the transformation from polar vortex to polar wave and out-of-plane polarization are observed step by step. Furthermore, the redistribution of charge in various topological structures has been demonstrated under an external bias. This provides new insights for the symbiosis of polar and charge and offers an opportunity for a new generation of microelectronic devices. Direct observation of the dynamic evolution of polar domain structures at atomic level remains challenging. Here, the authors report the observation of real-time topological transformations of polar structures in PbTiO3/SrTiO3 multilayers.
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Affiliation(s)
- K Du
- Center of Electron Microscopy, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| | - M Zhang
- Department of Physics, Zhejiang University, Hangzhou, 310027, China
| | - C Dai
- Department of Materials Science and Engineering, Pennsylvania State University, State College, PA, 16802, USA
| | - Z N Zhou
- Center of Electron Microscopy, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Y W Xie
- Department of Physics, Zhejiang University, Hangzhou, 310027, China
| | - Z H Ren
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| | - H Tian
- Center of Electron Microscopy, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, China. .,State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, China.
| | - L Q Chen
- Department of Materials Science and Engineering, Pennsylvania State University, State College, PA, 16802, USA
| | - Gustaaf Van Tendeloo
- Electron Microscopy for Materials Science (EMAT), University of Antwerp, Groenenborgerlaan 171, B-2020, Antwerp, Belgium.,Nanostructure Research Centre (NRC) Wuhan University of Technology, Wuhan, 430070, China
| | - Z Zhang
- Center of Electron Microscopy, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, China. .,State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, China.
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Wu L, Chen H, Li X, Zhu Y, Du K, Wang W, Xu C. EP1.16-33 QT Prolongation in an EGFR 19 Deletion Lung Adenocarcinoma Patient from Icotinib Treatment. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.2398] [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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Lin C, Wang W, Zhu Y, Du K, Wang W, Xu C, Fang M. EP1.16-23 The Efficacy of S-1 in the Third or More Than Line Treatment of Advanced Non-Small Cell Lung Cancer Patients. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.2388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Li X, Wu L, Chen H, Zhu Y, Du K, Wang W, Xu C. P2.16-39 The Association Between Dietary Protein Intake and the Risk of Lung Cancer: A Meta-Analysis. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.1906] [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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Lin G, Xu H, Zhao J, Kong J, Ai X, Yu F, Du K, Zhu L, Li L, Ma H, Wang Q, Xiong H, Chen R, Xia X. P2.14-09 Concurrent TP53 Mutation Adversely Impact the Efficacy of Crizotinib in ROS1-Rearranged Lung Cancer Patients. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.1794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Chen H, Wu L, Li X, Zhu Y, Du K, Wang W, Xu C. EP1.03-05 A Meta-Analysis of Association Between Serum Iron Levels and Lung Cancer Risk. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.2088] [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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Abstract
BACKGROUND Sarcopenia is characterized by progressive loss of muscle mass with corresponding decline in strength and/or physical function. The economic burden of sarcopenia-associated disability is considerable in the US. OBJECTIVE To estimate the cost of hospitalizations in US adults with sarcopenia categorized by age, sex, and race/ethnicity. DESIGN, SETTING AND PARTICIPANTS A retrospective, prevalence based, economic burden study, consisting of 4011 adults aged ≥40 years with and without sarcopenia. METHODS Data on prevalence of low lean mass, functional limitations, and hospitalizations were obtained from the National Health and Nutrition Examination Survey (1999-2004); cost of hospitalizations was obtained from the Healthcare Cost and Utilization Project - National Inpatient Sample (2014), and population estimates were obtained from the US Census (2014). Probability and cost of hospitalizations were estimated by multiple logistic regression and negative binomial regression models, respectively. RESULTS The total estimated cost of hospitalizations in individuals with sarcopenia was USD $40.4 billion with an average per person cost of USD $260. Within this category, average per person cost was highest for Hispanic women (USD $548) and lowest for Non-Hispanic Black women (USD $25); average per person cost was higher for older adults (≥65 years) (USD $375) than younger adults (40-64 years) (USD $204) with sarcopenia. The total cost of hospitalizations in individuals with sarcopenia (≥65 years) was USD $19.12 billion. Individuals with sarcopenia had greater odds of hospitalization (OR, 1.95; p<.001) compared to those without and had an annual marginal increase in cost of USD $2315.7 per person compared to individuals without sarcopenia. CONCLUSION Sarcopenia places considerable economic burden on the US healthcare system. The ethnic disparity and economic burden associated with sarcopenia warrant further investigation.
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Affiliation(s)
- S Goates
- Suzette Pereira, Abbott- Nutrition Division, Research and Development, 3300 Stelzer Road, Columbus, OH 43219 Phone: +1 614-624-4625, Fax: 614-727-4625,
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Adam B, Du K, Rotich S, Mengel M. Gene Expression in Formalin-Fixed Paraffin-Embedded Lung Transplant Biopsies: Correlation between Molecular and Histologic Phenotypes. J Heart Lung Transplant 2019. [DOI: 10.1016/j.healun.2019.01.123] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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Li X, Wu L, Chen H, Zhu Y, Wang W, Xu C, Lin X, Xie D, Du K. P091 Association Between BIM Polymorphism and Lung Cancer Outcomes: A Meta-analysis. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.10.104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Zhang X, Wu J, Lin X, Li J, Chen J, Du K, Lin X, Peng Q. Pattern of Clavicular Lymph Nodes Metastases and its Implication in Clinical Target Volume Delineation for Patients with Breast Cancer. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.1662] [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: 10/28/2022]
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Zhuang Q, Lin F, Lin X, Du K, Li J, Wu J. Propensity-Matched Analysis of Prognosis Following Whole Brain Radiation Therapy Alone Versus Whole Brain Radiation Therapy Combined with Local Boost in Small Cell Lung Cancer Patients with Brain Metastases. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.1138] [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: 10/28/2022]
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Zhu Y, Li X, Wu L, Chen H, Wang W, Xu C, Fang M, Shen J, Du K, Zhuang W, Chen Y, Chen G. P1.01-113 Analysis of Clinicopathological Features and Clinical Efficacy of Crizotinib in ROS1 Positive Non-Small Cell Lung Cancer. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.08.670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Zhu Y, Xu C, Wang W, Zhuang W, Chen G, Du K. P3.CR-13 Dual Drive Coexistence of EML4-ALK Fusion and TPM3-ROS1 Fusion Lung Adenocarcinoma: A Case Report. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.08.1992] [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: 10/28/2022]
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Zhu Y, Xu C, Wang W, Du K, Zhuang W, Fang M. P3.CR-04 Lung Cancer with Concurrent ROS1 Rearrangement and KRAS Mutation: A Case Report. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.08.1983] [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: 10/28/2022]
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Tso WWY, Wong VCN, Xia X, Faragher B, Li M, Xu X, Ao L, Zhang X, Jiao FY, Du K, Shang X, Wong PTY, Challis D. The Griffiths Development Scales-Chinese (GDS-C): A cross-cultural comparison of developmental trajectories between Chinese and British children. Child Care Health Dev 2018; 44:378-383. [PMID: 29392794 DOI: 10.1111/cch.12548] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/20/2017] [Revised: 12/05/2017] [Accepted: 12/30/2017] [Indexed: 11/30/2022]
Abstract
BACKGROUND The Griffiths Mental Development Scales (GMDS) are used in many countries to assess the development of children from birth to 8 years. There is a need for accurate and culturally appropriate developmental assessment tools for Chinese children. Here, we adapted the GMDS for use in Chinese children and compare the developmental trajectories between Chinese and British children. METHODS Children with typical development were recruited from 7 urban cities in China between 2009 and 2013. The Griffiths Mental Development Scales-Chinese (GDS-C) were adapted and used to assess the development of urban Chinese children. Developmental curves were computed for 6 subscales using learning management system methods and compare against the British curves from the Griffiths Mental Development Scales-Extended Revised (GMDS-ER). RESULTS The GDS-C were used to assess the developmental status of 815 Chinese children. Plots of the 1st, 5th, 10th, 25th, 50th, 75th, 90th, 95th, and 99th percentiles, and full percentile tables were obtained, which showed similar trends to data from the British GMDS-ER. CONCLUSIONS The Chinese developmental curves obtained from the GDS-C showed similarities and differences to the developmental curves from the British GMDS-ER. The development of urban Chinese children should be assessed with the culturally appropriate GDS-C.
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Affiliation(s)
- W W Y Tso
- Department of Paediatrics and Adolescent Medicine, Queen Mary Hospital, The University of Hong Kong, Pok Fu Lam, Hong Kong
| | - V C N Wong
- Department of Paediatrics and Adolescent Medicine, Queen Mary Hospital, The University of Hong Kong, Pok Fu Lam, Hong Kong
| | - X Xia
- Department of Paediatrics, The Second Affiliated Hospital of Kunming Medical University, Kunming, China
| | - B Faragher
- Liverpool School of Tropical Medicine, Liverpool, UK
| | - M Li
- Child Neuro-Habilitation Clinic, Department of Paediatrics, The First Hospital of Peking University, Beijing, China
| | - X Xu
- Child Health Care Department, The Children's Hospital of Fudan University, Shanghai, China
| | - L Ao
- Department of Paediatrics, The Second Affiliated Hospital of Kunming Medical University, Kunming, China
| | - X Zhang
- Department of Child and Adolescent Health, Tianjin Medical University, Tianjin, China
| | - F-Y Jiao
- Shaanxi Provincial People's Hospital of Xi'an Medical University, Xi'an, China
| | - K Du
- Department of Child Neurology, The Third Affiliated Hospital of ZhengZhou University, ZhengZhou, China
| | - X Shang
- Department of Paediatrics, The Second Affiliated Hospital of Kunming Medical University, Kunming, China
| | - P T Y Wong
- Department of Paediatrics and Adolescent Medicine, Queen Mary Hospital, The University of Hong Kong, Pok Fu Lam, Hong Kong
| | - D Challis
- Association for Research in Infant and Child Development, The Portland Hospital for Women and Children, London, UK
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Yin Q, Peng Y, Zhang S, Zhu F, Li W, Du K. Recyclable heat-resisting polymer poly(ether azaindole ketone)-H+via hydrogen bonding crosslinking. Polym Chem 2018. [DOI: 10.1039/c7py02097j] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel recyclable hydrogen bonding crosslinked polymer PEAINKH+ was prepared, which possesses outstanding thermal stability.
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Affiliation(s)
- Q. Yin
- Research Center of Laser Fusion
- China Academy of Engineering Physics
- Mianyang
- China
| | - Y. Peng
- Research Center of Laser Fusion
- China Academy of Engineering Physics
- Mianyang
- China
| | - S. Zhang
- Research Center of Laser Fusion
- China Academy of Engineering Physics
- Mianyang
- China
| | - F. Zhu
- Research Center of Laser Fusion
- China Academy of Engineering Physics
- Mianyang
- China
| | - W. Li
- Research Center of Laser Fusion
- China Academy of Engineering Physics
- Mianyang
- China
| | - K. Du
- Research Center of Laser Fusion
- China Academy of Engineering Physics
- Mianyang
- China
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Wang W, Xu C, Zhu Y, Liao X, Zhuang W, Du K, Chen R, Chen Y, Chen G, Fang M. P3.02-018 Patients Harboring ALK Rearrangement Adenocarcinoma after Acquired Resistance to Crizotinib and Transformation to SCLC: A Case Report. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.1548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Fang M, Wang W, Xu C, Liu R, Liao X, Zhu Y, Du K, Zhuang W, Chen Y, Chen G. P1.01-003 Patients Harboring a Novel PIK3CA Point Mutation after Acquired Resistance to Crizotinib in ROS1 Rearrangement Adenocarcinoma: A Case Report. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Zhu Y, Xu C, Wang W, Liao X, Du K, Zhuang W, Fang M. P3.02-067 Lung Cancer with Concurrent EGFR Mutation and ROS1 Rearrangement: A Case Report. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.1596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Goates S, Du K, Pereira S, Arensberg M, Gaillard T. SUN-LB308: The Cost of Sarcopenia Related Hospitalizations in Older Adults. Clin Nutr 2017. [DOI: 10.1016/s0261-5614(17)30655-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Li J, Li X, Gao R, Du K. CHINESE COMPREHENSIVE HEALTH ASSESSMENT SCALE AND HEALTH STATUS OF THE COMMUNITY-DWELLING ELDERLY. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- J. Li
- Nursing, Xi’an Jiaotong University, Xi’an, Shaanxi, China,
| | - X. Li
- Nursing, Xi’an Jiaotong University, Xi’an, Shaanxi, China,
| | - R. Gao
- Nursing, Xi’an Jiaotong University, Xi’an, Shaanxi, China,
| | - K. Du
- Xi’an Aerospace General Hospital, Xi’an, Shaanxi, China
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Zheng Z, Zhang P, He G, Liao K, Wang Z, Pan J, Du K, Du J, Li BA. Simultaneous detection of 45 fusion genes in leukemia by dual-color fluorescence real-time PCR. Int J Lab Hematol 2017; 39:175-184. [PMID: 28133905 DOI: 10.1111/ijlh.12600] [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: 07/19/2016] [Accepted: 10/03/2016] [Indexed: 11/28/2022]
Abstract
INTRODUCTION Detection of recurrent genetic abnormalities is of great significance for a refined diagnosis and assessment of prognosis in leukemia. Conventional nested reverse transcription PCR is labor intensive and time-consuming. METHODS We have developed a novel dual-color TaqMan probe-based real-time PCR method for the simultaneous screening of 45 fusion transcripts in 12 parallel reactions. The method was tested and validated with cell lines carrying known fusion transcripts and patient samples. RESULTS A multiplex real-time PCR method was successfully developed for rapid detection of 45 fusion genes and validated for 15 of the more commonly detected fusion genes. Intra-assay reproducibility assessed for the most frequent rearrangements ranged from 0.41% to 0.74% for the coefficient of variation (CV) of cycle threshold (Ct) and the interassay reproducibility ranged from 1.62% to 2.83% in five separate experiments. The lowest detection limit for the translocations tested ranged between 1 : 16 000 and 1 : 32 000. Validation of the method with 213 patient samples showed 100% specificity and excellent consistence with conventional nested RT-PCR. CONCLUSION Overall, we believe that this method is easily applicable, cost-effective, and clinically useful for a rapid screening of fusion genes in the initial diagnostic phase of leukemia. Its use can also be extended to the monitoring of minimal residual disease.
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Affiliation(s)
- Z Zheng
- School of Life Sciences, Xiamen University, Xiamen, China
| | - P Zhang
- Shanghai Tissuebank Biotechnology Co., Ltd, Shanghai, China
| | - G He
- Shanghai Tissuebank Biotechnology Co., Ltd, Shanghai, China
| | - K Liao
- Shanghai Tissuebank Biotechnology Co., Ltd, Shanghai, China
| | - Z Wang
- Shanghai Tissuebank Biotechnology Co., Ltd, Shanghai, China
| | - J Pan
- Shanghai Tissuebank Biotechnology Co., Ltd, Shanghai, China
| | - K Du
- Shanghai Tissuebank Biotechnology Co., Ltd, Shanghai, China
| | - J Du
- Shanghai Tissuebank Biotechnology Co., Ltd, Shanghai, China
| | - B-A Li
- School of Life Sciences, Xiamen University, Xiamen, China
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Du K, Cai H, Park M, Wall TA, Stott MA, Alfson KJ, Griffiths A, Carrion R, Patterson JL, Hawkins AR, Schmidt H, Mathies RA. Multiplexed efficient on-chip sample preparation and sensitive amplification-free detection of Ebola virus. Biosens Bioelectron 2017; 91:489-496. [PMID: 28073029 DOI: 10.1016/j.bios.2016.12.071] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2016] [Revised: 12/26/2016] [Accepted: 12/30/2016] [Indexed: 12/23/2022]
Abstract
An automated microfluidic sample preparation multiplexer (SPM) has been developed and evaluated for Ebola virus detection. Metered air bubbles controlled by microvalves are used to improve bead-solution mixing thereby enhancing the hybridization of the target Ebola virus RNA with capture probes bound to the beads. The method uses thermally stable 4-formyl benzamide functionalized (4FB) magnetic beads rather than streptavidin coated beads with a high density of capture probes to improve the target capture efficiency. Exploiting an on-chip concentration protocol in the SPM and the single molecule detection capability of the antiresonant reflecting optical waveguide (ARROW) biosensor chip, a detection limit of 0.021pfu/mL for clinical samples is achieved without target amplification. This RNA target capture efficiency is two orders of magnitude higher than previous results using streptavidin beads and the limit of detection (LOD) improves 10×. The wide dynamic range of this technique covers the whole clinically applicable concentration range. In addition, the current sample preparation time is ~1h which is eight times faster than previous work. This multiplexed, miniaturized sample preparation microdevice establishes a key technology that intended to develop next generation point-of-care (POC) detection system.
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Affiliation(s)
- K Du
- Department of Chemistry, University of California at Berkeley, Berkeley, CA 94720, USA
| | - H Cai
- School of Engineering, University of California Santa Cruz, 1156 High Street, Santa Cruz, CA 95064, USA
| | - M Park
- Department of Chemistry, University of California at Berkeley, Berkeley, CA 94720, USA
| | - T A Wall
- ECEn Department, Brigham Young University, 459 Clyde Building, Provo, UT 84602, USA
| | - M A Stott
- ECEn Department, Brigham Young University, 459 Clyde Building, Provo, UT 84602, USA
| | - K J Alfson
- Department of Virology and Immunology, Texas Biomedical Research Institute, 7620 NW Loop 410, San Antonio, TX 78227, USA
| | - A Griffiths
- Department of Virology and Immunology, Texas Biomedical Research Institute, 7620 NW Loop 410, San Antonio, TX 78227, USA
| | - R Carrion
- Department of Virology and Immunology, Texas Biomedical Research Institute, 7620 NW Loop 410, San Antonio, TX 78227, USA
| | - J L Patterson
- Department of Virology and Immunology, Texas Biomedical Research Institute, 7620 NW Loop 410, San Antonio, TX 78227, USA
| | - A R Hawkins
- ECEn Department, Brigham Young University, 459 Clyde Building, Provo, UT 84602, USA
| | - H Schmidt
- School of Engineering, University of California Santa Cruz, 1156 High Street, Santa Cruz, CA 95064, USA.
| | - R A Mathies
- Department of Chemistry, University of California at Berkeley, Berkeley, CA 94720, USA.
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Patton T, Du K, Christensen G, Reinhardt J, Bayouth J. WE-AB-202-03: Quantifying Ventilation Change Due to Radiation Therapy Using 4DCT Jacobian Calculations. Med Phys 2016. [DOI: 10.1118/1.4957744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Patton T, Du K, Christensen G, Reinhardt J, Bayouth J. SU-F-J-219: Predicting Ventilation Change Due to Radiation Therapy: Dependency On Pre-RT Ventilation and Effort Correction. Med Phys 2016. [DOI: 10.1118/1.4956127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Du K, Patton T, Reinhardt J, Christensen G, Bayouth J. WE-AB-202-06: Correlating Lung CT HU with Transformation-Based and Xe-CT Derived Ventilation. Med Phys 2016. [DOI: 10.1118/1.4957747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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