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Wen X, Yang X, Ge Z, Ma H, Wang R, Tian F, Teng P, Gao S, Li K, Zhang B, Sivanathan S. Self-powered optical fiber biosensor integrated with enzymes for non-invasive glucose sensing. Biosens Bioelectron 2024; 253:116191. [PMID: 38460209 DOI: 10.1016/j.bios.2024.116191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Revised: 03/02/2024] [Accepted: 03/04/2024] [Indexed: 03/11/2024]
Abstract
To alleviate the discomfort associated with frequent blood glucose detection in diabetic patients, a novel non-invasive tear glucose biosensor has been developed. This involved the design and preparation of a photoelectrochemical probe based on an optical fiber and biological enzymes. One end of the optical fiber connects to a light source, acting as an energy source and imparting, self-powered capability to the biosensor. The opposite end is loaded with nanomaterials and glucose oxidase, designed for insertion into the sample to realize photoelectrochemical sensing. This innovative configuration not only improves the integration of the biosensor but is also suitable for analyzing minuscule voluminal samples. The results show that the proposed biosensor exhibits a linear range from 10 nM to 100 μM, possesses a low detection limit of 4.1 nM and a short response time of 0.7 s. Benefiting from the high selectivity of the enzyme, the proposed biosensor demonstrates excellent resistance to the interference of common tear components. In summary, this work provides a more effective method for non-invasive glucose detection and affords valuable ideas for the design and fabrication of non-invasive and self-powered biosensors.
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Affiliation(s)
- Xingyue Wen
- Key Laboratory of Photonic Materials and Devices Physics for Oceanic Applications, Ministry of Industry and Information Technology of China, College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin, 150001, China; Key Laboratory of In-Fiber Integrated Optics of Ministry of Education, College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin, 150001, China
| | - Xinghua Yang
- Key Laboratory of Photonic Materials and Devices Physics for Oceanic Applications, Ministry of Industry and Information Technology of China, College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin, 150001, China; Key Laboratory of In-Fiber Integrated Optics of Ministry of Education, College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin, 150001, China.
| | - Zhongxuan Ge
- Key Laboratory of Photonic Materials and Devices Physics for Oceanic Applications, Ministry of Industry and Information Technology of China, College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin, 150001, China; Key Laboratory of In-Fiber Integrated Optics of Ministry of Education, College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin, 150001, China
| | - Hongyu Ma
- Key Laboratory of Photonic Materials and Devices Physics for Oceanic Applications, Ministry of Industry and Information Technology of China, College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin, 150001, China; Key Laboratory of In-Fiber Integrated Optics of Ministry of Education, College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin, 150001, China
| | - Rui Wang
- Key Laboratory of Photonic Materials and Devices Physics for Oceanic Applications, Ministry of Industry and Information Technology of China, College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin, 150001, China; Key Laboratory of In-Fiber Integrated Optics of Ministry of Education, College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin, 150001, China
| | - Fengjun Tian
- Key Laboratory of Photonic Materials and Devices Physics for Oceanic Applications, Ministry of Industry and Information Technology of China, College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin, 150001, China; Key Laboratory of In-Fiber Integrated Optics of Ministry of Education, College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin, 150001, China.
| | - Pingping Teng
- Key Laboratory of Photonic Materials and Devices Physics for Oceanic Applications, Ministry of Industry and Information Technology of China, College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin, 150001, China; Key Laboratory of In-Fiber Integrated Optics of Ministry of Education, College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin, 150001, China
| | - Shuai Gao
- Key Laboratory of Photonic Materials and Devices Physics for Oceanic Applications, Ministry of Industry and Information Technology of China, College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin, 150001, China; Key Laboratory of In-Fiber Integrated Optics of Ministry of Education, College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin, 150001, China
| | - Kang Li
- Faculty of Computing, Engineering & Science, University of South Wales, Wales, CF37 1DL, UK
| | - Bo Zhang
- Faculty of Computing, Engineering & Science, University of South Wales, Wales, CF37 1DL, UK; Henan Academy of Special Optics Ltd., Xinxiang, 453000, China
| | - Sivagunalan Sivanathan
- Faculty of Computing, Engineering & Science, University of South Wales, Wales, CF37 1DL, UK
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Teng P, Liu Y, Sun Z, Meng H, Han Y, Zhang X. Co-adsorption and Fenton-like oxidation in the efficient removal of methylene blue by MIL-88B@UiO-66 nanoflowers. Dalton Trans 2023. [PMID: 37439682 DOI: 10.1039/d3dt01413d] [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: 07/14/2023]
Abstract
Development of binary MOF-on-MOF heterostructures is a research hotspot in MOFs chemistry due to the advantages elicited by a closely connected interface, which may endow more abundant functionality and even broader applications in interface chemistry. A MOF-on-MOF heterostructure was constructed by in situ growth of MIL-88B on the outer surface of UiO-66. The resultant MIL-88B@UiO-66 produced had an interesting flower-like morphology composed of MIL-88B (petal) on tetrahedral UiO-66 (core). The MIL-88B@UiO-66 heterostructure showed adsorption and Fenton-like oxidation abilities, with distinctly improved structural stability in aqueous solution compared with that of single MIL-88B. Methylene blue (MB) was selected as the target molecule to evaluate the adsorption and Fenton-like oxidation activities. The efficiency of total removal of MB was studied systematically under various operating conditions and the influencing factors were optimized. The kinetics of adsorption and catalytic oxidation were simulated to explore the interactions between MB and MIL-88B@UiO-66. The mechanisms of enhanced adsorption and Fenton-like oxidation were suggested. The cyclic removal performance and structural stability of MIL-88B@UiO-66 were also determined.
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Affiliation(s)
- Pingping Teng
- Department of Chemistry, College of Sciences, Northeastern University, Shenyang 110819, P. R. China.
| | - Ying Liu
- Department of Chemistry, College of Sciences, Northeastern University, Shenyang 110819, P. R. China.
| | - Zhongqiao Sun
- Department of Chemistry, College of Sciences, Northeastern University, Shenyang 110819, P. R. China.
| | - Hao Meng
- Department of Chemistry, College of Sciences, Northeastern University, Shenyang 110819, P. R. China.
| | - Yide Han
- Department of Chemistry, College of Sciences, Northeastern University, Shenyang 110819, P. R. China.
| | - Xia Zhang
- Department of Chemistry, College of Sciences, Northeastern University, Shenyang 110819, P. R. China.
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Wen X, Chang X, Li A, Yang X, Tian F, Liu Z, Copner N, Teng P, Yuan L. ZnO/Cu 2O heterojunction integrated fiber-optic biosensor for remote detection of cysteine. Biosens Bioelectron 2023; 223:115021. [PMID: 36549109 DOI: 10.1016/j.bios.2022.115021] [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: 09/24/2022] [Revised: 12/01/2022] [Accepted: 12/15/2022] [Indexed: 12/23/2022]
Abstract
Indium tin oxide, semiconductor nanomaterial ZnO, and Cu2O were first loaded on the surface of the optical fiber to form an optical fiber probe. Large-volume macroscopic spatial light is replaced by an optical fiber path, and remote light injection is implemented. Based on the optical fiber probe, a photoelectrochemical biosensor was constructed and remote detection of cysteine was realized. In this tiny device, the optical fiber probe not only acts as a working electrode to react with the analyte but also directs the light exactly where it is needed. Simultaneously, the electrochemical behavior of cysteine on the surface of the working electrode is dominated by diffusion-control, which provides strong support for quantitative detection. Then, under the bias potential of 0 V, the linear range of the fiber-optic-based cysteine biosensor was 0.01∼1 μM, the regression coefficient (R2) value was 0.9943. In spiked synthetic urine, the detection of cysteine was also realized by the integrated biosensor. Moreover, benefiting from the low optical fiber loss, the new structure also possesses a unique remote detection function. This work confirms that photoelectrochemical biosensors can be integrated via optical fibers and retain comparable sensing performance. Based on this property, different materials can also be loaded on the surface of the optical fiber for remote detection of other analytes. It is expected to facilitate the research on fiber-optic-based integrated biosensors and show application prospects in diverse fields such as biochemical analysis and disease diagnosis.
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Affiliation(s)
- Xingyue Wen
- Key Laboratory of In-Fiber Integrated Optics, Ministry of Education, College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin, 150001, China
| | - Xinyu Chang
- Key Laboratory of In-Fiber Integrated Optics, Ministry of Education, College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin, 150001, China
| | - Aohua Li
- Key Laboratory of In-Fiber Integrated Optics, Ministry of Education, College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin, 150001, China
| | - Xinghua Yang
- Key Laboratory of In-Fiber Integrated Optics, Ministry of Education, College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin, 150001, China.
| | - Fengjun Tian
- Key Laboratory of In-Fiber Integrated Optics, Ministry of Education, College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin, 150001, China
| | - Zhihai Liu
- Key Laboratory of In-Fiber Integrated Optics, Ministry of Education, College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin, 150001, China
| | - Nigel Copner
- Wireless & Optoelectronics Research & Innovation Centre, Faculty of Computing, Engineering & Science, University of South Wales, Wales, CF37 1DL, UK
| | - Pingping Teng
- Key Laboratory of In-Fiber Integrated Optics, Ministry of Education, College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin, 150001, China.
| | - Libo Yuan
- Key Laboratory of In-Fiber Integrated Optics, Ministry of Education, College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin, 150001, China; Photonics Research Center, Guilin University of Electronics Technology, Guilin, 541004, China
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Tompkins YH, Teng P, Pazdro R, Kim WK. Long Bone Mineral Loss, Bone Microstructural Changes and Oxidative Stress After Eimeria Challenge in Broilers. Front Physiol 2022; 13:945740. [PMID: 35923236 PMCID: PMC9340159 DOI: 10.3389/fphys.2022.945740] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Accepted: 06/14/2022] [Indexed: 11/24/2022] Open
Abstract
The objective of this study was to evaluate the impact of coccidiosis on bone quality and antioxidant status in the liver and bone marrow of broiler chickens. A total of 360 13-day old male broilers (Cobb 500) were randomly assigned to different groups (negative control, low, medium-low, medium-high, and highest dose groups) and orally gavaged with different concentrations of Eimeria oocysts solution. Broiler tibia and tibia bone marrow were collected at 6 days post-infection (6 dpi) for bone 3-D structural analyses and the gene expression related to osteogenesis, oxidative stress, and adipogenesis using micro-computed tomography (micro-CT) and real-time qPCR analysis, respectively. Metaphyseal bone mineral density and content were reduced in response to the increase of Eimeria challenge dose, and poor trabecular bone traits were observed in the high inoculation group. However, there were no significant structural changes in metaphyseal cortical bone. Medium-high Eimeria challenge dose significantly increased level of peroxisome proliferator-activated receptor gamma (PPARG, p < 0.05) and decreased levels of bone gamma-carboxyglutamate protein coding gene (BGLAP, p < 0.05) and fatty acid synthase coding gene (FASN, p < 0.05) in bone marrow. An increased mRNA level of superoxide dismutase type 1 (SOD1, p < 0.05) and heme oxygenase 1 (HMOX1, p < 0.05), and increased enzyme activity of superoxide dismutase (SOD, p < 0.05) were found in bone marrow of Eimeria challenged groups compared with that of non-infected control. Similarly, enzyme activity of SOD and the mRNA level of SOD1, HMOX1 and aflatoxin aldehyde reductase (AKE7A2) were increased in the liver of infected broilers (p < 0.05), whereas glutathione (GSH) content was lower in the medium-high challenge group (p < 0.05) compared with non-challenged control. Moreover, the mRNA expression of catalase (CAT) and nuclear factor kappa B1 (NFKB1) showed dose-depend response in the liver, where expression of CAT and NFKB1 was upregulated in the low challenge group but decreased with the higher Eimeria challenge dosage (p < 0.05). In conclusion, high challenge dose of Eimeria infection negatively affected the long bone development. The structural changes of tibia and decreased mineral content were mainly located at the trabecular bone of metaphyseal area. The change of redox and impaired antioxidant status following the Eimeria infection were observed in the liver and bone marrow of broilers.
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Affiliation(s)
- Y. H. Tompkins
- Department of Poultry Science, University of Georgia, Athens, GA, United States
| | - P. Teng
- Department of Poultry Science, University of Georgia, Athens, GA, United States
| | - R. Pazdro
- Department of Foods and Nutrition, University of Georgia, Athens, GA, United States
| | - W. K. Kim
- Department of Poultry Science, University of Georgia, Athens, GA, United States
- *Correspondence: W. K. Kim,
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Tang B, Lee JB, Cheng S, Pan T, Yao W, Wang D, Tu M, Xiang Z, Chu X, Geng L, Qiang P, Teng P, Sun G, Liu H, Wang J, Schimmer AD, Yang L, Sun Z, Zhang L, Zhu X. Allogeneic double-negative T cell therapy for relapsed acute myeloid leukemia patients post allogeneic hematopoietic stem cell transplantation: A first-in-human phase I study. Am J Hematol 2022; 97:E264-E267. [PMID: 35385187 DOI: 10.1002/ajh.26564] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 03/31/2022] [Accepted: 04/01/2022] [Indexed: 11/10/2022]
Affiliation(s)
- Baolin Tang
- Department of Hematology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine University of Science and Technology of China Hefei China
- Blood and Cell Therapy Institute, Division of Life Sciences and Medicine University of Science and Technology of China Hefei China
- Anhui Provincial Key Laboratory of Blood Research and Applications Hefei China
| | - Jong Bok Lee
- Transplantation Department, Toronto General Hospital Research Institute University Health Network Toronto Ontario Canada
- Department of Laboratory Medicine and Pathobiology University of Toronto Toronto Ontario Canada
- Department of Immunology University of Toronto Toronto Ontario Canada
| | - Siqi Cheng
- Department of Hematology Huaibei People's Hospital Huaibei China
| | - Tianzhong Pan
- Department of Hematology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine University of Science and Technology of China Hefei China
- Blood and Cell Therapy Institute, Division of Life Sciences and Medicine University of Science and Technology of China Hefei China
- Anhui Provincial Key Laboratory of Blood Research and Applications Hefei China
| | - Wen Yao
- Department of Hematology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine University of Science and Technology of China Hefei China
| | - Dongyao Wang
- Department of Hematology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine University of Science and Technology of China Hefei China
| | - Meijuan Tu
- Department of Hematology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine University of Science and Technology of China Hefei China
| | - Zhiqiang Xiang
- R&D Center WYZE Biotech Co., Ltd Hangzhou China
- Cell Manufacturing Department Ruichuang Biotechnology Co., Ltd Shaoxing China
| | - Xiandeng Chu
- Department of Hematology Lu'an Hospital Affiliated to Anhui Medical University Lu'an China
| | - Liangquan Geng
- Department of Hematology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine University of Science and Technology of China Hefei China
| | - Ping Qiang
- Department of Hematology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine University of Science and Technology of China Hefei China
| | - Pingping Teng
- R&D Center WYZE Biotech Co., Ltd Hangzhou China
- Cell Manufacturing Department Ruichuang Biotechnology Co., Ltd Shaoxing China
| | - Guangyu Sun
- Department of Hematology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine University of Science and Technology of China Hefei China
| | - Huilan Liu
- Department of Hematology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine University of Science and Technology of China Hefei China
- Blood and Cell Therapy Institute, Division of Life Sciences and Medicine University of Science and Technology of China Hefei China
- Anhui Provincial Key Laboratory of Blood Research and Applications Hefei China
| | - Jian Wang
- Department of Hematology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine University of Science and Technology of China Hefei China
| | - Aaron D. Schimmer
- Princess Margaret Cancer Centre University Health Network Toronto Ontario Canada
| | - Liming Yang
- R&D Center WYZE Biotech Co., Ltd Hangzhou China
- Cell Manufacturing Department Ruichuang Biotechnology Co., Ltd Shaoxing China
| | - Zimin Sun
- Department of Hematology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine University of Science and Technology of China Hefei China
- Blood and Cell Therapy Institute, Division of Life Sciences and Medicine University of Science and Technology of China Hefei China
- Anhui Provincial Key Laboratory of Blood Research and Applications Hefei China
| | - Li Zhang
- Transplantation Department, Toronto General Hospital Research Institute University Health Network Toronto Ontario Canada
- Department of Laboratory Medicine and Pathobiology University of Toronto Toronto Ontario Canada
- Department of Immunology University of Toronto Toronto Ontario Canada
| | - Xiaoyu Zhu
- Department of Hematology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine University of Science and Technology of China Hefei China
- Blood and Cell Therapy Institute, Division of Life Sciences and Medicine University of Science and Technology of China Hefei China
- Anhui Provincial Key Laboratory of Blood Research and Applications Hefei China
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Zhang M, Liu Y, Teng P, Yang Q. Differential Expression of miR-381-3p in Alzheimer's Disease Patients and Its Role in Beta-Amyloid-Induced Neurotoxicity and Inflammation. Neuroimmunomodulation 2022; 29:211-219. [PMID: 34749366 DOI: 10.1159/000519780] [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] [Received: 06/24/2021] [Accepted: 08/29/2021] [Indexed: 11/19/2022] Open
Abstract
INTRODUCTION This study aimed to explore the diagnostic value and effect of miR-381-3p on Alzheimer's disease (AD). METHODS RT-qPCR was used for the measurement of miR-381-3p levels. Pearson correlation coefficient was used for the correlation analysis. Receiver operating characteristic (ROC) curve was constructed to assess the distinct ability of miR-381-3p for AD. SH-SY5Y cells were treated with Aβ25-35 to establish an AD cell model. The role of miR-381-3p on cell proliferation and apoptosis was detected. ELISA was applied to detect the protein levels of inflammatory cytokine expression. The target relationship of miR-381-3p with PTGS2 was verified by luciferase reporter gene assay. RESULTS Low expression of miR-381-3p was detected in the serum of AD patients and cell models. There was a negative association of serum miR-381-3p with the serum inflammatory cytokines. The ROC curve demonstrated the distinct ability of serum miR-381-3p for AD, with the AUC value of 0.898, with a sensitivity of 87.5%, and a specificity of 77.7%. Overexpression of miR-381-3p reversed the influence of Aβ25-35 on cell proliferation and apoptosis, but miR-381-3p downregulation exacerbated the influence. miR-381-3p overexpression inhibited the release of IL-6, IL-1β, and TNF-α induced by Aβ25-35 treatment, whereas miR-381-3p downregulation further promoted the release of inflammatory cytokines. PTGS2 was the target gene of miR-381-3p and was upregulated in AD cell models. CONCLUSION miR-381-3p is less expressed in the serum of AD patients and has potential diagnostic values for AD. Overexpression of miR-381-3p may attenuate Aβ25-35-induced neurotoxicity and inflammatory responses via targeting PTGS2 in SH-SY5Y cells.
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Affiliation(s)
- Meng Zhang
- Department of Neurology, Yidu Central Hospital of Weifang, Weifang, China
| | - Yonglei Liu
- Department of Cardiology First Ward, Yidu Central Hospital of Weifang, Weifang, China
| | - Pingping Teng
- Department of General Health and Geriatrics, Yidu Central Hospital of Weifang, Weifang, China
| | - Qing Yang
- Department of Neurology, Yidu Central Hospital of Weifang, Weifang, China
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Teng P, Gao D, Yang X, Luo M, Kong D, Gao S, Liu Z, Li Z, Wen X, Yuan L, Li K, Bowkett M, Copner N. In situ SERS detection of quinolone antibiotic residues in a water environment based on optofluidic in-fiber integrated Ag nanoparticles. Appl Opt 2021; 60:6659-6664. [PMID: 34612910 DOI: 10.1364/ao.426611] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Accepted: 06/28/2021] [Indexed: 06/13/2023]
Abstract
In this paper, we present a microstructured optofluidic in-fiber Raman sensor for the detection of quinolone antibiotic residue in a water environment based on Ag surface-enhanced Raman scattering (SERS) substrate grown on the surface of the suspended core of micro-hollow optical fiber (MHF). Here, MHF has a special structure with a suspended core and a microchannel inside, which can become a natural in-fiber optofluidic device. Meanwhile, the self-assembled Ag SERS substrate can be grown on the suspended core's surface through chemical bonds, forming a microstructured optofluidic device with a Raman enhancement effect. Therefore, it can effectively detect the Raman signal of unlabeled trace quinolone antibiotic residue (ciprofloxacin and norfloxacin) inside the optical fiber. The results show that the ciprofloxacin and norfloxacin detection limits (LOD) are 10-10M and 10-11M, respectively. Compared with the maximum residue limit (3.01×10-7mol/L) stipulated by the European Union, the results are much lower, and an ideal quantitative relationship can be obtained within the detection range. Significantly, this study provides an in-fiber microstructured optofluidic Raman sensor for the label-free detection of quinolone antibiotic residue, which will have good development prospects in the field of antibiotic water pollution environmental detection.
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Gao D, Yang X, Teng P, Luo M, Zhang H, Liu Z, Yang J, Li Z, Wen X, Yuan L, Li K, Bowkett M, Copner N. On-line SERS detection of bilirubin based on the optofluidic in-fiber integrated GO/Ag NPs for rapid diagnosis of jaundice. Talanta 2021; 234:122692. [PMID: 34364489 DOI: 10.1016/j.talanta.2021.122692] [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: 04/19/2021] [Revised: 06/30/2021] [Accepted: 07/03/2021] [Indexed: 10/20/2022]
Abstract
In this paper, we propose a self-assembled graphene oxide (GO)/Ag NPs SERS Raman sensor based on a novel type of optofluidic MHF as a point-of-care testing (POCT) device. This device is used to diagnose jaundice and its related diseases through on-line detection of free bilirubin content in human serum. This optofluidic Raman sensor is composed of a microstructured hollow fiber (MHF) with a microstructured channel and a suspended core, which allows the sample solution to flow in the channel while interacting with the strong evanescent field on the suspended core. Here, the suspended core was modified by a GO/Ag NPs SERS substrate. When the sample flows through the channel, and interacts with the strong evanescent field generated by the suspended core, the on-line SERS signal is generated and can be coupled back to the suspended core to be detected. In addition, both the electrostatic interaction and interference between GO/Ag NPs with the target enriched bilirubin. The results show that the detection concentration range of bilirubin aqueous, bilirubin in albumin and bilirubin in human blood are all in the range of 2 μM-100 μM, and all have a good linear response. The limit of detection reaches the order of 10-6 M. This rapid, sensitive and label-free SERS Raman sensor of free bilirubin in blood can detect excessive levels of bilirubin in the actual blood environment of the human body, providing a broad prospect for clinically accurate diagnosis of jaundice and related diseases.
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Affiliation(s)
- Danheng Gao
- Key Laboratory of In-Fiber Integrated Optics, Ministry of Education, College of Science, Harbin Engineering University, Harbin, 150001, China
| | - Xinghua Yang
- Key Laboratory of In-Fiber Integrated Optics, Ministry of Education, College of Science, Harbin Engineering University, Harbin, 150001, China.
| | - Pingping Teng
- Key Laboratory of In-Fiber Integrated Optics, Ministry of Education, College of Science, Harbin Engineering University, Harbin, 150001, China.
| | - Meng Luo
- Key Laboratory of In-Fiber Integrated Optics, Ministry of Education, College of Science, Harbin Engineering University, Harbin, 150001, China
| | - Haoxin Zhang
- Harbin Medical University Cancer Hospital, Harbin Medical University, Harbin, 150001, China
| | - Zhihai Liu
- Key Laboratory of In-Fiber Integrated Optics, Ministry of Education, College of Science, Harbin Engineering University, Harbin, 150001, China
| | - Jun Yang
- Key Laboratory of In-Fiber Integrated Optics, Ministry of Education, College of Science, Harbin Engineering University, Harbin, 150001, China
| | - Zhanao Li
- Key Laboratory of In-Fiber Integrated Optics, Ministry of Education, College of Science, Harbin Engineering University, Harbin, 150001, China
| | - Xingyue Wen
- Key Laboratory of In-Fiber Integrated Optics, Ministry of Education, College of Science, Harbin Engineering University, Harbin, 150001, China
| | - Libo Yuan
- Key Laboratory of In-Fiber Integrated Optics, Ministry of Education, College of Science, Harbin Engineering University, Harbin, 150001, China; Photonics Research Center, Guilin University of Electronics Technology, Guilin, 541004, China
| | - Kang Li
- Wireless & Optoelectronics Research & Innovation Centre, Faculty of Computing, Engineering & Science, University of South Wales, Wales, CF37 1DL, UK
| | - Mark Bowkett
- Wireless & Optoelectronics Research & Innovation Centre, Faculty of Computing, Engineering & Science, University of South Wales, Wales, CF37 1DL, UK
| | - Nigel Copner
- Wireless & Optoelectronics Research & Innovation Centre, Faculty of Computing, Engineering & Science, University of South Wales, Wales, CF37 1DL, UK
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Teng P, Luo M, Yang X, Gao D, Copner N, Liu Z, Yang J, Li Z, Gao S, Li K, Bowkett M, Yuan L. All-fiber bidirectional optical modulator derives from the microfiber coated with ITO electrode. Opt Lett 2021; 46:2497-2500. [PMID: 33988618 DOI: 10.1364/ol.426577] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Accepted: 04/21/2021] [Indexed: 06/12/2023]
Abstract
A cheap, compact, and simply prepared all-fiber bidirectional optical modulator based on the Pockels effect of water and the band population effect was first, to the best of our knowledge, proposed and demonstrated. The transparent conductive oxide indium-tin-oxide (ITO) was coated on the surface of a nonadiabatic microfiber and first used as a modulating electrode on the microfiber. The device was realized by just submerging the microfiber in water. With supplying an electric field perpendicular to the interface between the microfiber and water, the refractive index was modulated in the electric double layer near the tapered region of the microfiber, under the Pockels effect of water. Subsequently, the interference spectrum was modulated. Meanwhile, the intensity of the light was modulated due to the band population effect in the space-charge layer. In this Letter, the proposed all-fiber optical modulator can realize simultaneous bidirectional modulation of the phase and intensity of output light. Experimentally, the maximum phase shift and the extinction ratio were 4.38 nm and 4.87 dB at 1550 nm, respectively. Significantly, the work used the Pockels effect of water and the band population effect to realize an all-fiber optical modulator, showing great potential in the optical phase modulators, optical switches, and electric field sensors.
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Gao D, Yang X, Teng P, Luo M, Zhang H, Liu Z, Yang J, Li Z, Wen X, Yuan L, Li K, Bowkett M, Copner N. In-fiber optofluidic online SERS detection of trace uremia toxin. Opt Lett 2021; 46:1101-1104. [PMID: 33649667 DOI: 10.1364/ol.418602] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Accepted: 01/27/2021] [Indexed: 06/12/2023]
Abstract
In this Letter, we propose a microstructured in-fiber optofluidic surface-enhanced Raman spectroscopy (SERS) sensor for the initial inspection of uremia through the detection of unlabeled urea and creatinine. As a natural microfluidic device, microstructured hollow fiber has a special structure inside. Through chemical bonds, the SERS substrate can be modified and grown on the surface of the suspended core. Here, the silver nanoparticles (Ag NPs) are embedded on the poly diallyl dimethyl ammonium chloride-modified graphene oxide sheet to achieve the self-assembled SERS substrate. The reduced distance between Ag NPs can increase the strong hot spots that generate enhanced Raman signals. Therefore, it can effectively detect the Raman signal of unlabeled trace uremic toxin analytes (urea, creatinine) inside the optical fiber. The results show that under simulated biophysical conditions, the limit detection (LOD) for urea is 10-4M and the linearity is good, especially at the clinical conventional concentration range (2.5-6.5×10-3M). In addition, the online Raman detection of creatinine aqueous solution LOD is 10-6M, which also has good linearity. Significantly, this Letter provides a microstructured optofluidic in-fiber Raman sensor for the preliminary detection of uremia, which will have good development prospects in the field of clinical biomedicine.
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Luo M, Yang X, Teng P, Liu Z, Yang J, Kong D, Gao D, Li Z, Wen X, Yu X, Yuan L, Li K, Bowkett M, Copner N, Wang X. All-fiber phase modulator and switch based on local surface plasmon resonance effect of the gold nanoparticles embedded in gel membrane. Appl Opt 2020; 59:10506-10511. [PMID: 33361985 DOI: 10.1364/ao.406268] [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: 08/26/2020] [Accepted: 09/26/2020] [Indexed: 06/12/2023]
Abstract
All-fiber modulators and switches have drawn great interest in the photonics domain, and they are applied in viable photonic and optoelectronic devices. In this work, with the assistance of an agarose membrane, aspherical gold nanoparticles are embedded on the surface of the microfiber treated with the piranha solution. An all-fiber Mach-Zehnder interferometer was used to realize a low-cost, low-loss, and conveniently prepared all-fiber phase modulator. By taking advantage of the local surface plasmon resonance effect of gold nanoparticles embedded in the agarose membrane, under the excitation of near-infrared region light, the gold nanoparticles were excited to change the effective refractive index of one arm of the Mach-Zehnder interferometer. A maximum phase shift of ∼6π at 1550 nm was obtained from the device. In addition, an all-optical switch was achieved with a rising edge time of 47 ms and falling edge time of 14 ms. The proposed all-fiber modulator and switch based on the local surface plasmon resonance effect of gold nanoparticles embedded in agarose membrane will provide great potential in all-optical fiber systems.
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Gao D, Yang X, Teng P, Liu Z, Yang J, Kong D, Zhang J, Luo M, Li Z, Tian F, Yuan L. Optofluidic in-fiber integrated surface-enhanced Raman spectroscopy detection based on a hollow optical fiber with a suspended core. Opt Lett 2019; 44:5173-5176. [PMID: 31674959 DOI: 10.1364/ol.44.005173] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Accepted: 07/09/2019] [Indexed: 06/10/2023]
Abstract
In this Letter, we propose, to the best of our knowledge, the first in-fiber optofluidic Raman surface-enhanced Raman spectroscopy (SERS) sensor based on a microstructured hollow fiber (MHF) with a suspended core. Taking advantage of the unique internal structure, we immobilize silver nanoparticles with an SERS effect in the MHF by chemical bonding. The Raman signal of the microfluidic sample is excited by the excitation light in the suspended core through an evanescent field. Then the online SERS signal can be coupled back into the core and detected. To demonstrate the feasibility of the device, rhodamine 6G is chosen as the analyte, and high-quality SERS spectra are detected with the limit of detection of 1×10-14 M. Furthermore, an online optofluidic test is conducted on ceftriaxone (C18H18N8O7S3) to examine its capabilities in antibiotic sensing. The results show that the LOD of the samples is 10-6 M. Significantly, this Letter provides an integrated optofluidic in-fiber SERS sensor with a microchannel that can be integrated with chip devices without spatial optical coupling, which has a broad application in medicine and food safety, as well as various aspects of biological in-fiber sensing.
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Cao J, Yang X, Teng P, Liu Z, Yang J, Zhang J, Zhang Y, Luo M, Gao D, Kong D, Xia S, Zhao E, Yuan L. On-line dynamic detection in the column chromatography separation based on an optical fiber surface plasmon resonance sensor. Appl Opt 2019; 58:5774-5779. [PMID: 31503880 DOI: 10.1364/ao.58.005774] [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: 04/30/2019] [Accepted: 06/08/2019] [Indexed: 06/10/2023]
Abstract
In this design, we introduced a surface plasmon resonance (SPR) fiber-sensing probe into a column chromatography (CC) system to realize on-line dynamic detection in sample separation. The refractive index of the gel around the probe would be adjusted dynamically by the concentration change of the sample during CC separation. To demonstrate the separation and on-line detection process, bovine serum albumin (BSA) and riboflavin-5-phosphate sodium (FMN-Na) are chosen as the analytes in a Sephadex gel filtration chromatography system. The results show that the apparent reversible shift of the SPR spectrum can characterize the separation process. Specifically, the separated BSA with an outflow time of 8 min can cause a resonance wavelength shift of 15.5 nm, and the FMN-Na with an outflow time of 26 min can cause a shift of 8.4 nm. This on-line dynamic detection of SPR spectra has great potential to save time and simplify the analysis process compared to the complex thin layer chromatography detection steps in traditional manual CC.
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Cheng H, Tang X, Cheng J, Zhang B, Zhang YL, Wang WQ, Teng P. Pathologic character and diagnosis of female primary genital system diffuse large B cell lymphoma. Eur Rev Med Pharmacol Sci 2017; 21:1471-1476. [PMID: 28429361] [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: 06/07/2023]
Abstract
OBJECTIVE We investigated the clinicopathological characteristics and immunophenotype of female genital system diffuse large B-cell lymphoma (DLBCL) in order to improve diagnosis and therapy efficacy. PATIENTS AND METHODS The clinicopathologic features of 13 cases with primary DLBCL of the female genital system were studied retrospectively. According to the immunophenotypes, 10 cases were classified as germinal center B-cell-like DLBCL and the other 3 as non-center B-cell-like DLBCL. RESULTS The immunohistochemistry data showed that CD20, PAX-5, and CD79a tested positive, while CD3, CD43 and CD45RO tested negative in all 13 cases. In 7 cases EMA was positive, in 9 cases CD10 was positive, in 11 cases bcl-6 was positive, and in 9 cases MUM-1 was tested positive. In one case, the Ki-67 index was less than 59%, in 3 cases Ki-67 index was between 60% to 89% and it was more than 90% in the remaining 9 cases (the median was 90%). All 13 patients underwent hysterectomy, while in 10 of them hysterectomy was followed by chemotherapy. The survival time was 3 to 20 months. CONCLUSIONS Primary diffuse large B-cell lymphoma of the primary female genital system is a rare and highly invasive condition that can be easily misdiagnosed. A complete diagnosis is very important because the treatment and prognosis vary in different histological types. Moreover, the immunohistochemistry is an useful diagnostic method for this type of cancer.
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MESH Headings
- Biomarkers, Tumor
- Diagnosis, Differential
- Female
- Genital Neoplasms, Female/diagnosis
- Genital Neoplasms, Female/pathology
- Genital Neoplasms, Female/physiopathology
- Humans
- Immunophenotyping
- Lymphoma, Large B-Cell, Diffuse/diagnosis
- Lymphoma, Large B-Cell, Diffuse/pathology
- Lymphoma, Large B-Cell, Diffuse/physiopathology
- Prognosis
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Affiliation(s)
- H Cheng
- Department of Obstetrics and Gynecology, XuZhou Central Hospital, Xuzhou, Jiang Su Province, China.
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Yang X, Yuan T, Teng P, Kong D, Liu C, Li E, Zhao E, Tong C, Yuan L. An in-fiber integrated optofluidic device based on an optical fiber with an inner core. Lab Chip 2014; 14:2090-2095. [PMID: 24799034 DOI: 10.1039/c4lc00184b] [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] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A new kind of optofluidic in-fiber integrated device based on a specially designed hollow optical fiber with an inner core is designed. The inlets and outlets are built by etching the surface of the optical fiber without damaging the inner core. A reaction region between the end of the fiber and a solid point obtained after melting is constructed. By injecting samples into the fiber, the liquids can form steady microflows and react in the region. Simultaneously, the emission from the chemiluminescence reaction can be detected from the remote end of the optical fiber through evanescent field coupling. The concentration of ascorbic acid (AA or vitamin C, Vc) is determined by the emission intensity of the reaction of Vc, H2O2, luminol, and K3Fe(CN)6 in the optical fiber. A linear sensing range of 0.1-3.0 mmol L(-1) for Vc is obtained. The emission intensity can be determined within 2 s at a total flow rate of 150 μL min(-1). Significantly, this work presents information for the in-fiber integrated optofluidic devices without spatial optical coupling.
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Affiliation(s)
- Xinghua Yang
- Key Laboratory of In-Fiber Integrated Optics, Ministry of Education, College of Science, Harbin Engineering University, Harbin 150001, China.
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Rungruang B, Teng P, Hood BL, Sun M, Flint MS, Bateman NW, Jones-Laughner J, Maxwell GL, Krivak TC, Conrads TP. Mre11 as a biomarker of platinum resistance in epithelial ovarian cancer cell lines. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.e15527] [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: 11/20/2022] Open
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Warshofsky MK, Wasserman HS, Wang W, Teng P, Sciacca R, Apfelbaum M, Schwartz A, Michler RE, Mancini DM, Cannon PJ, Rabbani LE. Plasma levels of tissue plasminogen activator and plasminogen activator inhibitor-1 are correlated with the presence of transplant coronary artery disease in cardiac transplant recipients. Am J Cardiol 1997; 80:145-9. [PMID: 9230149 DOI: 10.1016/s0002-9149(97)00308-1] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Hemostatic factors are involved in the pathogenesis of native coronary artery disease. However, their role in transplant coronary artery disease is less established. To assess the role of hemostatic factors in transplant coronary artery disease we studied 52 consecutive cardiac transplant patients. The presence of transplant coronary artery disease was determined by angiography. Plasma levels of tissue plasminogen activator (t-PA), plasminogen activator inhibitor-1 (PAI-1), von Willebrand Factor (vWF), and fibrin D-dimer were determined by enzyme-linked immunosorbent assays. Serum lipids were measured by enzymatic methods. Patients with transplant coronary artery disease had higher circulating t-PA (8.6 +/- 0.8 vs. 5.4 +/- 0.6 ng/ml, p = 0.021) and PAI-1 antigen concentrations (38.0 +/- 3.4 vs 25.8 +/- 2.2 ng/ml, p = 0.037). t-PA and PAI-1 antigen concentrations correlated with the severity of angiographic disease (R = 0.34; p = 0.014 for t-PA, and R = 0.45; p = 0.001 for PAI-1). Serum cholesterol levels were higher in patients with transplant coronary artery disease (221 +/- 7.6 vs 191 +/- 9.2 mg/dl, p = 0.039). Serum triglycerides were also higher in patients with transplant coronary artery disease by angiography (246 +/- 38.3 vs 139 +/- 20.8 mg/dl, p = 0.050). Multivariate analysis identified t-PA antigen (p = 0.003) and triglyceride levels (p = 0.038) as independent predictors for the presence of transplant coronary artery disease. We conclude that cardiac transplant patients with evidence of transplant coronary artery disease on coronary angiography have altered hemostatic function which is reflected by elevated levels of circulating t-PA and PAI-1 antigens. The interaction of the hemostatic system and serum lipids in the development of transplant coronary artery disease warrants further study.
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Affiliation(s)
- M K Warshofsky
- Department of Medicine, Columbia University College of Physicians and Surgeons, New York, New York 10032, USA
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Teng P, Nishioka NS, Farinelli WA, Anderson RR, Deutsch TF. Microsecond-long flash photography of laser-induced ablation of biliary and urinary calculi. Lasers Surg Med Suppl 1987; 7:394-7. [PMID: 3695781 DOI: 10.1002/lsm.1900070504] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
High-speed flash photographs of laser-induced fragmentation of biliary and renal calculi under water were obtained using one-microsecond-long dye-laser pulses for both illumination and ablation. The photographs show the presence of a bubble with irregularities on the surface that suggest the early presence of debris or microbubbles. Fragmentation occurs before the bubble collapses, suggesting that fragmentation is due to laser-induced acoustic transients rather than to collapse of a laser-induced cavitation bubble.
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Affiliation(s)
- P Teng
- Department of Dermatology, Wellman Research Laboratory, Massachusetts General Hospital, Boston 02114
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Jimenez F, Teng P, Rosenblatt MB. Cancer of the lung in males. Bull N Y Acad Med 1975; 51:432-8. [PMID: 1053691 PMCID: PMC1749445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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20
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Lee MH, Teng P, Zaretsky HH, Rubin M. Acupuncture anesthesia in dentistry. A clinical investigation. N Y State Dent J 1973; 39:299-301. [PMID: 4571637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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Teng P. A set of new instruments for lumbar spondylosis. Bull Los Angeles Neurol Soc 1972; 37:184-90. [PMID: 5073270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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22
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Teng P. Meralgia paresthetica. Bull Los Angeles Neurol Soc 1972; 37:75-83. [PMID: 4339840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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23
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Teng P, Papatheodorou CA. Dermal sinus and intraspinal dermoid and epidermoid cyst in children. Bull Los Angeles Neurol Soc 1970; 35:153-63. [PMID: 4919317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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24
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Teng P. Skin closure in myelomeningocele. A technical note. Bull Los Angeles Neurol Soc 1970; 35:104-6. [PMID: 4914911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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Rosenblatt MB, Lisa JR, Teng P, Beck I. Validity of lung cancer mortality data. Bull N Y Acad Med 1969; 45:519-27. [PMID: 5254021 PMCID: PMC1750461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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26
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Teng P, Papatheodorou C. Primary cerebrospinal fluid hypotension. Bull Los Angeles Neurol Soc 1968; 33:121-8. [PMID: 5669496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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27
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Teng P, Papatheodorou C. Postherpetic trigeminal neuralgia ten years after retro-gasserian rhizotomy. Case report. J Neurosurg 1968; 28:61-2. [PMID: 5635963 DOI: 10.3171/jns.1968.28.1.0061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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28
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Teng P, Papatheodorou C. Traumatic subluxation of C2 in young children. Bull Los Angeles Neurol Soc 1967; 32:197-202. [PMID: 6056723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Chanock R, Chambon L, Chang W, Gonçalves Ferreira F, Gharpure P, Grant L, Hatem J, Imam I, Kalra S, Lim K, Madalengoitia J, Spence L, Teng P, Ferreira W. WHO respiratory disease survey in children: a serological study. Bull World Health Organ 1967; 37:363-9. [PMID: 5301380 PMCID: PMC2554267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
This paper is a report on the first (serological) phase of a study organized by WHO in collaboration with the WHO International Reference Centre for Respiratory Virus Diseases other than Influenza in Bethesda, Md., USA, to define the viral etiology of severe respiratory infections in children, particularly in tropical areas. Paired sera from 528 children up to 5 years old admitted to hospital with severe respiratory illness of probable viral etiology were collected in 10 countries and sent frozen to the International Reference Centre, where standard complement-fixation tests were made for the following agents: parainfluenza virus types 1, 2 and 3, influenza virus types A and B, adenoviruses, respiratory syncytial virus, Mycoplasma pneumoniae, Coxiella burneti and psittacosis-ornithosis.Some 41% of paired sera showed rising antibody titres for one or more of these agents, multiple infections being observed in 8%. In most of the countries the pattern of infection was similar. RS virus was the most important respiratory tract pathogen of early life, particularly in the first year of life and in cases of bronchiolitis and pneumonia; the parainfluenza viruses were next in importance, particularly in cases of croup, but, in contra-distinction to RS virus infections, they were commoner in older children. Influenza, adenoviruses, and M. pneumoniae were of moderate importance, and C. burneti and the psittacosis-ornithosis agents were relatively rare. This pattern is similar to that which has been observed in temperate climates.
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Teng P. Ligamentum denticulatum. (An anatomical review and its role in various neurosurgical problems of the spinal cord). J Mt Sinai Hosp N Y 1965; 32:567-77. [PMID: 5212658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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