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Chen L, Yu X, Chen W, Qiu F, Li D, Yang Z, Yang S, Lu S, Wang L, Feng S, Xiu P, Tang M, Wang H. Nanoscale detection of carbon dots-induced changes in actin skeleton of neural cells. J Colloid Interface Sci 2024; 668:293-302. [PMID: 38678885 DOI: 10.1016/j.jcis.2024.04.152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Revised: 04/08/2024] [Accepted: 04/22/2024] [Indexed: 05/01/2024]
Abstract
Understanding the cytotoxicity of fluorescent carbon dots (CDs) is crucial for their applications, and various biochemical assays have been used to study the effects of CDs on cells. Knowledge on the effects of CDs from a biophysical perspective is integral to the recognition of their cytotoxicity, however the related information is very limited. Here, we report that atomic force microscopy (AFM) can be used as an effective tool for studying the effects of CDs on cells from the biophysical perspective. We achieve this by integrating AFM-based nanomechanics with AFM-based imaging. We demonstrate the performance of this method by measuring the influence of CDs on living human neuroblastoma (SH-SY5Y) cells at the single-cell level. We find that high-dose CDs can mechanically induce elevated normalized hysteresis (energy dissipation during the cell deformation) and structurally impair actin skeleton. The nanomechanical change highly correlates with the alteration of actin filaments, indicating that CDs-induced changes in SH-SY5Y cells are revealed in-depth from the AFM-based biophysical aspect. We validate the reliability of the biophysical observations using conventional biological methods including cell viability test, fluorescent microscopy, and western blot assay. Our work contributes new and significant information on the cytotoxicity of CDs from the biophysical perspective.
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Affiliation(s)
- Ligang Chen
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China; Chongqing School, University of Chinese Academy of Sciences, Chongqing 400714, China; Chongqing Engineering Research Center of High-Resolution and Three-Dimensional Dynamic Imaging Technology, Chongqing 400714, China
| | - Xiaoting Yu
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China; Chongqing School, University of Chinese Academy of Sciences, Chongqing 400714, China; Chongqing Engineering Research Center of High-Resolution and Three-Dimensional Dynamic Imaging Technology, Chongqing 400714, China
| | - Wei Chen
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China; Chongqing School, University of Chinese Academy of Sciences, Chongqing 400714, China; Chongqing Engineering Research Center of High-Resolution and Three-Dimensional Dynamic Imaging Technology, Chongqing 400714, China
| | - Fucheng Qiu
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China; Chongqing School, University of Chinese Academy of Sciences, Chongqing 400714, China; Chongqing Engineering Research Center of High-Resolution and Three-Dimensional Dynamic Imaging Technology, Chongqing 400714, China
| | - Dandan Li
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China; Chongqing School, University of Chinese Academy of Sciences, Chongqing 400714, China; Chongqing Engineering Research Center of High-Resolution and Three-Dimensional Dynamic Imaging Technology, Chongqing 400714, China
| | - Zhongbo Yang
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China; Chongqing School, University of Chinese Academy of Sciences, Chongqing 400714, China; Chongqing Engineering Research Center of High-Resolution and Three-Dimensional Dynamic Imaging Technology, Chongqing 400714, China
| | - Songrui Yang
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China; Chongqing School, University of Chinese Academy of Sciences, Chongqing 400714, China
| | - Shengjun Lu
- Department of Mechanical Engineering, University of Houston, Houston, TX 77204, USA
| | - Liang Wang
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China; Chongqing School, University of Chinese Academy of Sciences, Chongqing 400714, China
| | - Shuanglong Feng
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China; Chongqing School, University of Chinese Academy of Sciences, Chongqing 400714, China
| | - Peng Xiu
- Department of Engineering Mechanics, Zhejiang University, Hangzhou 310027, China
| | - Mingjie Tang
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China; Chongqing School, University of Chinese Academy of Sciences, Chongqing 400714, China; Chongqing Engineering Research Center of High-Resolution and Three-Dimensional Dynamic Imaging Technology, Chongqing 400714, China
| | - Huabin Wang
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China; Chongqing School, University of Chinese Academy of Sciences, Chongqing 400714, China; Chongqing Engineering Research Center of High-Resolution and Three-Dimensional Dynamic Imaging Technology, Chongqing 400714, China.
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Yang Z, Li D, Chen L, Qiu F, Yan S, Tang M, Wang C, Wang L, Luo Y, Sun F, Han J, Fan C, Li J, Wang H. Near-Field Terahertz Morphological Reconstruction Nanoscopy for Subsurface Imaging of Protein Layers. ACS Nano 2024; 18:10104-10112. [PMID: 38527229 DOI: 10.1021/acsnano.3c12776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/27/2024]
Abstract
Protein layers formed on solid surfaces have important applications in various fields. High-resolution characterization of the morphological structures of protein forms in the process of developing protein layers has significant implications for the control of the layer's quality as well as for the evaluation of the layer's performance. However, it remains challenging to precisely characterize all possible morphological structures of protein in various forms, including individuals, networks, and layers involved in the formation of protein layers with currently available methods. Here, we report a terahertz (THz) morphological reconstruction nanoscopy (THz-MRN), which can reveal the nanoscale three-dimensional structural information on a protein sample from its THz near-field image by exploiting an extended finite dipole model for a thin sample. THz-MRN allows for both surface imaging and subsurface imaging with a vertical resolution of ∼0.5 nm, enabling the characterization of various forms of proteins at the single-molecule level. We demonstrate the imaging and morphological reconstruction of single immunoglobulin G (IgG) molecules, their networks, a monolayer, and a heterogeneous double layer comprising an IgG monolayer and a horseradish peroxidase-conjugated anti-IgG layer. The established THz-MRN presents a useful approach for the label-free and nondestructive study of the formation of protein layers.
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Affiliation(s)
- Zhongbo Yang
- Center of Super-Resolution Optics and Chongqing Engineering Research Center of High-Resolution and Three-Dimensional Dynamic Imaging Technology, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China
- Chongqing School, University of Chinese Academy of Sciences, Chongqing 400714, China
| | - Dandan Li
- Center of Super-Resolution Optics and Chongqing Engineering Research Center of High-Resolution and Three-Dimensional Dynamic Imaging Technology, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China
| | - Ligang Chen
- Center of Super-Resolution Optics and Chongqing Engineering Research Center of High-Resolution and Three-Dimensional Dynamic Imaging Technology, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China
- Chongqing School, University of Chinese Academy of Sciences, Chongqing 400714, China
| | - Fucheng Qiu
- Center of Super-Resolution Optics and Chongqing Engineering Research Center of High-Resolution and Three-Dimensional Dynamic Imaging Technology, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China
- Chongqing School, University of Chinese Academy of Sciences, Chongqing 400714, China
| | - Shihan Yan
- Center of Super-Resolution Optics and Chongqing Engineering Research Center of High-Resolution and Three-Dimensional Dynamic Imaging Technology, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China
- Chongqing School, University of Chinese Academy of Sciences, Chongqing 400714, China
| | - Mingjie Tang
- Center of Super-Resolution Optics and Chongqing Engineering Research Center of High-Resolution and Three-Dimensional Dynamic Imaging Technology, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China
- Chongqing School, University of Chinese Academy of Sciences, Chongqing 400714, China
| | - Chunlei Wang
- Institute of Materiobiology, Department of Chemistry, College of Science, Shanghai University, Shanghai 200444, China
| | - Lihua Wang
- Institute of Materiobiology, Department of Chemistry, College of Science, Shanghai University, Shanghai 200444, China
| | - Yang Luo
- Center of Smart Laboratory and Molecular Medicine, School of Medicine, Chongqing University, Chongqing 400044, China
| | - Fei Sun
- Center for Biological Imaging, Core Facilities for Protein Science, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China
| | - Jiaguang Han
- Guangxi Key Laboratory of Optoelectronic Information Processing, School of Optoelectronic Engineering, Guilin University of Electronic Technology, Guilin 541004, China
| | - Chunhai Fan
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules and National Center for Translational Medicine, Shanghai Jiao Tong University, Shanghai 200024, China
| | - Jiang Li
- Institute of Materiobiology, Department of Chemistry, College of Science, Shanghai University, Shanghai 200444, China
| | - Huabin Wang
- Center of Super-Resolution Optics and Chongqing Engineering Research Center of High-Resolution and Three-Dimensional Dynamic Imaging Technology, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China
- Chongqing School, University of Chinese Academy of Sciences, Chongqing 400714, China
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Liu Y, Bian Y, Wang TY, Qiu F. [Analysis of the clinical characteristics of V4 segment steal blood in the vertebral artery]. Zhonghua Nei Ke Za Zhi 2024; 63:279-283. [PMID: 38448191 DOI: 10.3760/cma.j.cn112138-20231024-00243] [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] [Subscribe] [Scholar Register] [Indexed: 03/08/2024]
Abstract
Objective: To explore the clinical characteristics of unilateral vertebral artery V4 segment occlusive lesions (severe stenosis or occlusion), where the contralateral vertebral artery can be compensated through blood flow and reverse supply to the posterior inferior cerebellarartery (PICA). Methods: This study is a retrospective case series of 66 patients with V4 segment occlusive lesions of unilateral vertebral artery diagnosed and treated from June 2020 to October 2022. Patient data were retrospectively collected, and their hemodynamic characteristics and imaging data were analyzed. Results: Of the 66 cases, 11 patients (16.7%) with V4 segment occlusive disease showed the blood flow of the vertebral artery on the opposite side of the lesion on the digital subtraction angiography (DSA), which can be reverse stolen to the posterior inferior cerebellar artery of the diseased side through the confluence point of the vertebrobasilar artery through the distal end of the ipsilateral vertebral artery V4. Owing to the lack of literature on this pathway and based on the characteristics of previous definitions of subclavian artery steal and carotid artery steal, we referred to this pathway as the vertebral artery V4 segment steal. In 6 patients (9.1%), transcranial Doppler ultrasound (TCD) and transcranial color Doppler ultrasound (TCCD) showed that the blood flow signal was not detected at the proximal end of the V4 segment of the affected side, rather the blood flow direction was reversed at the distal end of the V4 segment, resulting in compensatory acceleration of the blood flow velocity of the V4 segment of the contralateral vertebral artery. Conclusion: "V4 segment steal of vertebral artery" is a very rare route of vertebral artery steal. When V4 segment of the vertebral artery is occluded, clinicians should pay attention to observe the blood supply of PICA and whether there is such a steal route, to better evaluate the blood flow compensation and prognosis of patients.
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Affiliation(s)
- Y Liu
- Department of Neurology, the Second Affiliated Hospital of Qiqihar Medical College, Qiqihar 161006, China
| | - Y Bian
- Department of Neurology, First Medical Center, PLA General Hospital, Beijing 100039, China
| | - T Y Wang
- Department of Neurology, the Second Affiliated Hospital of Qiqihar Medical College, Qiqihar 161006, China
| | - F Qiu
- Department of Neurology, First Medical Center, PLA General Hospital, Beijing 100039, China
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Liu F, Chen F, Yang L, Qiu F, Zhong G, Gao S, Xi W, Lai M, He Q, Chen Y, Chen W, Zhang J, Yang L. Melittin acupoint injection in attenuating bone erosion in collagen-induced arthritis mice via inhibition of the RANKL/NF-κB signaling pathway. Quant Imaging Med Surg 2023; 13:5996-6013. [PMID: 37711782 PMCID: PMC10498218 DOI: 10.21037/qims-23-254] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Accepted: 07/06/2023] [Indexed: 09/16/2023]
Abstract
Background Rheumatoid arthritis (RA) is an autoimmune disease leading to chronic joint inflammation. Bone erosion is the most serious pathological condition of RA and the main cause of joint deformities and disability. Melittin acupoint injection (MAI) is an effective traditional Chinese medicine (TCM) method for RA treatment. This study aimed to investigate the effect of MAI on RA bone erosion and to elucidate the underlying mechanism. Methods A collagen-induced arthritis (CIA) mouse model was established as the experimental subject. MAI was administrated once every other day for 28 days to mice with CIA. The effects of MAI on joint diseases were assessed by body weight, arthritis index (AI) score, swollen joint count (SJC) score, and hind paw thickness. Ankle radiological changes were captured by micro-computed tomography (micro-CT) and histological changes were observed by pathological staining. Organ histological changes, spleen index, alanine aminotransferase (ALT), aspartate aminotransferase (AST), and creatinine (Crea) levels of serum were tested to evaluate the toxicity of MAI. Cytokine expression levels were confirmed by enzyme-linked immunosorbent assay (ELISA) to evaluate the immunity of CIA mice. Results MAI administration markedly improved the clinical signs of CIA in mice, including hind paw thickness, AI, and the number of swollen paw joints (most of them P<0.05 or even <0.01). According to histopathological analysis, MAI ameliorated inflammatory cell infiltration, synovial hyperplasia, pannus formation, and bone erosion (all P<0.01). Micro-CT and tartrate-resistant acid phosphatase (TRAP) staining (P<0.01) also revealed that MAI could relieve bone erosion via reducing the formation of osteoclasts. Not only could MAI relieve the immunological boost [P<0.05 for the high-dose MAI (HM) group], but also it had no liver or kidney side effects (P>0.05). In addition, it decreased the serum levels of interleukin (IL)-6 and tumor necrosis factor-α (TNF-α) and increased the serum levels of IL-4 and IL-10 (the majority of P<0.05 or even <0.01). Transcriptome sequencing results indicated that MAI affected the expression of osteoclast differentiation pathway genes, which was connected with the receptor activator of the nuclear factor κB ligand/nuclear factor kappa B (RANKL/NF-κB) pathway. Conclusions Based on our findings, MAI could suppress joint inflammation and inhibit RANKL/NF-κB-mediated osteoclast differentiation to rescue bone erosion in CIA mice, suggesting that MAI can be a potentially therapeutic substance for RA.
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Affiliation(s)
- Fenfang Liu
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
| | - Fen Chen
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
| | - Le Yang
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
| | - Fucheng Qiu
- Intensive Care Unit, Foshan Hospital of TCM, Foshan, China
| | - Guangen Zhong
- Department of Acupuncture and Rehabilitation, Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
| | - Shan Gao
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
| | - Weizhe Xi
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
| | - Meilian Lai
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
| | - Qiting He
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
| | - Ying Chen
- Department of Acupuncture and Rehabilitation, Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
| | - Weiming Chen
- Department of Acupuncture and Rehabilitation, Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
| | - Jiping Zhang
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
| | - Lu Yang
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
- Department of Acupuncture and Rehabilitation, Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
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Zhong XL, Jia SS, Qiu F. [Correlation of cognitive function with intracranial lesions and the degree of depression and anxiety in patients with neuromyelitis optica spectrum disorders]. Zhonghua Nei Ke Za Zhi 2023; 62:993-999. [PMID: 37528038 DOI: 10.3760/cma.j.cn112138-20221013-00757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 08/03/2023]
Abstract
Objective: To investigate the correlation of cognitive dysfunction with intracranial lesions and symptoms of depression and anxiety in patients with neuromyelitis optica spectrum disorders (NMOSD). Methods: Thirty-one NMOSD patients (7/24 males/females) were enrolled in the Department of Neurology of the Sixth Medical Center of the PLA General Hospital from August 2019 to August 2022. The average age was 42±13 years, and the average education level was 12 (9, 12) years. There were 30 healthy controls, 11/19 males/females, with an average age of 47±9 years and an average education of 12 (9, 15) years. The general clinical data and imaging data were collected, and the subjects were assessed on their cognition, anxiety and depression using the assessment scale approved at home and abroad. A cross-sectional study was conducted on them. The t-test or Wilcoxon test was used for inter-group comparison, and Pearson test or Spearman test was used to explore the correlation between the cognition of NMOSD patients and their intracranial lesions, depression and anxiety. Results: Compared with the healthy control group, NMOSD patients had significantly lower scores on MoCA (Z=-3.10,P=0.002), CRAVLT-N7 (Z=-5.12, P<0.001), CRAVLT-N8 (t=-4.40, P<0.001), ROCF-R (t=-3.10,P<0.01), ROCF-C (Z=-2.72,P<0.01), PASAT-3 (Z=-2.71,P<0.01), PASAT-2 (Z=-3.14,P<0.01), and CWT-A (Z=-3.10,P<0.01)scales. Frontal lobe lesions were negatively correlated with PASAT-2 (r=-0.448, P=0.012) scores, temporal lobe lesions were negatively correlated with CRAVLT-N9 (r=-0.564, P=0.001), and parietal lobe lesions were negatively correlated with MoCA (r=-0.374, P=0.038), PASAT-3 (r=-0.426, P=0.017), and PASAT-2 (r=-0.459, P=0.009) scores; The scores of MoCA (r=-0.392, P=0.029), CRAVLT-N6 (r=-0.396, P=0.028), CRAVLT-N7 (r=-0.415, P=0.020), CRAVLT-N8 (r=-0.406, P=0.023), PASAT-3 (r=-0.537, P=0.002) and PASAT-2 (r=-0.495, P=0.005) scales were negatively correlated with the scores of HAMD assessment, and the scores of PASAT-3 (r=-0.499, P=0.004) and PASAT-2 (r=-0.452, P=0.011) were negatively correlated with the scores of HAMA. Conclusions: The cognitive function of patients with NMOSD is significantly reduced, involving multiple cognitive domains. The cognitive function is affected by the distribution of intracranial lesions and the degree of depression and anxiety.
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Affiliation(s)
- X L Zhong
- Department of Neurology, School of Medicine, South China University of Technology, Guangzhou 510006, China Department of Neurology, the Sixth Medical Center of Chinese PLA General Hospital of Beijing, Beijing 100048, China
| | - S S Jia
- Department of Neurology, the Sixth Medical Center of Chinese PLA General Hospital of Beijing, Beijing 100048, China Naval Clinical College of the Fifth Clinical School of Anhui Medical University, Hefei 230032, China
| | - F Qiu
- Department of Neurology, School of Medicine, South China University of Technology, Guangzhou 510006, China Department of Neurology, the Sixth Medical Center of Chinese PLA General Hospital of Beijing, Beijing 100048, China
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Zhang SM, Qiu F, Sun X, Sun H, Wu L, Huang DH, Wu WP. [Analysis of the clinical characteristics and misdiagnosis of area postrema syndrome manifesting as intractable nausea, vomiting, and hiccups in neuromyelitis optica spectrum disorders]. Zhonghua Nei Ke Za Zhi 2023; 62:705-710. [PMID: 37263955 DOI: 10.3760/cma.j.cn112138-20220621-00468] [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: 06/03/2023]
Abstract
Objective: To investigate the misdiagnosis of area postrema syndrome (APS) manifesting as intractable nausea, vomiting and hiccups in neuromyelitis optic spectrum disease (NMOSD) and reduce the risk of misdiagnosis. Methods: We retrospectively analyzed data from NMOSD patients attending the Department of Neurology at the First Medical Center of PLA General Hospital between January 2019 and July 2021. SPSS25.0 was then used to analyze the manifestations, misdiagnosis, and mistreatment of APS. Results: A total of 207 patients with NMOSD were included, including 21 males and 186 females. The mean age of onset was 39±15 years (range: 5-72 years). The proportion of patients who were positive for serum aquaporin 4 antibody was 82.6% (171/207). In total, 35.7% (74/207) of the NMOSD patients experienced APS during the disease course; of these patients, 70.3% (52/74) had APS as the first symptom and 29.7% (22/74) had APS as a secondary symptom. The misdiagnosis rates for these conditions were 90.4% (47/52) and 50.0% (11/22), respectively. As the first symptom, 19.2% (10/52) of patients during APS presented only with intractable nausea, vomiting and hiccups; 80.8% (42/52) of patients experienced other neurological symptoms. The Departments of Gastroenterology and General Medicine were the departments that most frequently made the first diagnosis of APS, accounting for 54.1% and 17.6% of patients, respectively. The most common misdiagnoses related to diseases of the digestive system and the median duration of misdiagnosis was 37 days. Conclusions: APS is a common symptom of NMOSD and is associated with a high rate of misdiagnosis. Other concomitant symptoms often occur with APS. Gaining an increased awareness of this disease/syndrome, obtaining a detailed patient history, and performing physical examinations are essential if we are to reduce and avoid misdiagnosis.
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Affiliation(s)
- S M Zhang
- Department of Neurology, the First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - F Qiu
- Department of Neurology, the Eighth Medical Center,Chinese PLA General Hospital,Beijing 100091, China
| | - X Sun
- Department of Geriatric Neurology, the Second Medical Center,Chinese PLA General Hospital, Beijing 100853, China
| | - H Sun
- Department of Neurology, the First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - L Wu
- Department of Neurology, the First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - D H Huang
- Department of Neurology, the First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - W P Wu
- Department of Neurology, the First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
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Liu F, Yang L, Chen F, Zhang J, Yang L, Qiu F, Zhong G, Gao S, Xi W, Lai M, He Q, Chen Y, Chen W. Melittin acupoint injection in attenuating bone erosion in collagen-induced arthritis mice via inhibition of the RANKL/NF-κB signaling pathway. Ann Transl Med 2023. [DOI: 10.21037/atm-22-6583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
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Jia SS, Zhong XL, Qiu F. [Research progress of cerebrospinal fluid and blood biomarkers in multiple system atrophy]. Zhonghua Nei Ke Za Zhi 2022; 61:1269-1273. [PMID: 36323572 DOI: 10.3760/cma.j.cn112138-20211116-00818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Affiliation(s)
- S S Jia
- Navy Clinical College, Anhui Medical University, Hefei 230032, China The Fifth School of Clinical Medicine, Anhui Medical University, Hefei 230032, China
| | - X L Zhong
- School of Medicine, South China University of Technology, Guangzhou 510006, China
| | - F Qiu
- Department of Neurology, the Sixth Medical Center of Chinese PLA General Hospital, Beijing 100048, China
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Qiu F, You G, Tan Z, Wan W, Wang C, Liu X, Chen X, Liu R, Tao H, Fu Z, Li H, Cao J. A terahertz near-field nanoscopy revealing edge fringes with a fast and highly sensitive quantum-well photodetector. iScience 2022; 25:104637. [PMID: 35800762 PMCID: PMC9254002 DOI: 10.1016/j.isci.2022.104637] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2021] [Revised: 05/15/2022] [Accepted: 06/14/2022] [Indexed: 11/30/2022] Open
Abstract
We demonstrate the successful implementation of a terahertz (THz) quantum-well photodetector (QWP) for effective signal collection in a scattering-type scanning near-field optical microscope (s-SNOM) system. The light source is an electrically pumped THz quantum cascade laser (QCL) at 4.2 THz, which spectrally matches with the peak photoresponse of THz QWP. The sensitive THz QWP has a low noise equivalent power (NEP) of about 1.1 pW/Hz0.5 and a spectral response range from 2 to 7 THz. The fast-responding capability of the THz QWP is vital for detecting the rapidly tip-modulated THz light which can effectively suppress the background noise. The THz images of the nanostructure demonstrate a spatial resolution of about 95 nm, corresponding to ∼λ/752 at 4.2 THz. We experimentally investigate and theoretically interpret the formation of the fringes which appear at the edge position of a gold stripe in the THz near-field image. THz scattering-type scanning near-field optical microscope with a high-power THz QCL Highly sensitive THz quantum-well photodetector for effective signal collection Nanoscale spatial resolution reveals local optical properties in THz range Experimentally investigate and theoretically interpret the formation of the edge fringes
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Bian Y, Miao Y, Wang KY, Jia SS, Zhong XL, Qiu F. [Analysis of characteristics of collateral circulation pathways in dizziness patients caused by severe bilateral vertebral artery stenosis/occlusion]. Zhonghua Yi Xue Za Zhi 2021; 101:3244-3247. [PMID: 34689538 DOI: 10.3760/cma.j.cn112137-20210325-00743] [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
The clinical data of 47 patients [41 males, 6 females, aged (62±7) years] treated at the Department of Neurology of the Sixth Medical Center of PLA General Hospital from October 2018 to October 2020 who were diagnosed with severe bilateral vertebral artery stenosis/occlusion through Digital Subtraction Angiography (DSA) were retrospectively collected, and the characteristics of the compensatory pathways of collateral circulation were determined. Results showed that there were 8 intracranial and extracranial compensatory pathways, with posterior communicating artery as the major type (21 cases) for intracranial ones and deep carotid artery as the major type (16 cases) for extracranial ones. As the establishment of the compensatory pathway is closely related to the lesion site, DSA assessment for patients with severe bilateral vertebral artery stenosis/occlusion is helpful for clinicians to make judgement on prognosis of patients and choose individualized treatment plans.
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Affiliation(s)
- Y Bian
- Department of Neurology, the 6th Medical Center of PLA General Hospital, Beijing 100048, China
| | - Y Miao
- Department of Neurology, the 6th Medical Center of PLA General Hospital, Beijing 100048, China
| | - K Y Wang
- Department of Neurology, the 6th Medical Center of PLA General Hospital, Beijing 100048, China
| | - S S Jia
- Department of Neurology, the 6th Medical Center of PLA General Hospital, Beijing 100048, China
| | - X L Zhong
- Department of Neurology, the 6th Medical Center of PLA General Hospital, Beijing 100048, China
| | - F Qiu
- Department of Neurology, the 6th Medical Center of PLA General Hospital, Beijing 100048, China
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An K, De Mestral C, Tam D, Qiu F, Ouzounian M, Lindsay T, Wijeysundera H, Chung J. IMAGING SURVEILLANCE FOLLOWING ACUTE TYPE A AORTIC DISSECTION: A POPULATION-BASED COHORT STUDY. Can J Cardiol 2021. [DOI: 10.1016/j.cjca.2021.07.200] [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: 10/20/2022] Open
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12
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Deng J, Xu J, Zhong F, Tang J, Fang K, Yu F, Zhang G, Lai J, Qiu F. P68.04 Molecular Mechanism of MK2 Promoting Lung Adenocarcinoma Progression by Phosphorylating Transcription Regulator CRABP2. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.08.691] [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: 10/20/2022]
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13
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Liu Y, Dong MH, Hu B, Li YZ, Liang CM, Qiu F. [Collateral circulation compensation mode in patients with severe bilateral internal carotid artery stenosis/occlusion]. Zhonghua Nei Ke Za Zhi 2021; 60:739-743. [PMID: 34304450 DOI: 10.3760/cma.j.cn112138-20210129-00083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the correlation between collateral flow compensation mode and interventional treatment decision in patients with severe bilateral internal carotid artery stenosis/occlusion. Methods: According to the location of internal carotid artery lesions, patients with severe stenosis/occlusion of bilateral internal carotid artery were selected at the Second Affiliated Hospital, Qiqihar Medical University and the Sixth Medical Center of PLA General Hospital from May 2017 to June 2020. Results: A total of 42 patients were finally enrolled and divided into 4 types, including 34 males and 8 females with median age 61±8(48-82)years. The collateral circulation pathways manifested as following modes: anterior communicating artery collateral, posterior communicating artery collateral, ophthalmic artery collateral, posterior cerebral middle cerebral artery pial anastomosis collateral, posterior choroidal artery anterior choroidal artery collateral, external carotid internal carotid artery C4 segment collateral, pericallosal artery anastomosis collateral, dural and pial collateral and neovascularization. Type Ⅰ severe stenosis/occlusion of C1 segment was found in 20 cases (47.6%). There were 5 cases (11.9%) of type Ⅱ severe stenosis/occlusion from C2 to C6 prior to ophthalmic artery branch. Type Ⅲ severe stenosis/occlusion occurred in 2 cases (4.8%) after the split of ophthalmic artery. Type Ⅳ was mixed type in 15 cases (35.7%). Conclusions: The compensatory pathway of collateral circulation is closely related to the lesion location. To explore the compensatory pattern of collateral circulation is helpful for clinicians to accurately analyze the lesion characteristics and guide individualized interventional therapy.
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Affiliation(s)
- Y Liu
- Department of Neurology, Second Affiliated Hospital of Qiqihar Medical University, Qiqihar 161006, China
| | - M H Dong
- Department of Neurology, Second Affiliated Hospital of Qiqihar Medical University, Qiqihar 161006, China
| | - B Hu
- Department of Neurology, Second Affiliated Hospital of Qiqihar Medical University, Qiqihar 161006, China
| | - Y Z Li
- Department of Neurology, Second Affiliated Hospital of Qiqihar Medical University, Qiqihar 161006, China
| | - C M Liang
- Department of Neurology, Second Affiliated Hospital of Qiqihar Medical University, Qiqihar 161006, China
| | - F Qiu
- Department of Neurology, the Sixth Medical Center of PLA General Hospital, Beijing 100037, China
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Bian Y, Wang KY, Miao Y, Zhong XL, Jia SS, Qiu F. [Collateral circulation pathway in patients with basilar artery occlusion/severe stenosis: a single-center case series]. Zhonghua Nei Ke Za Zhi 2021; 60:734-738. [PMID: 34304449 DOI: 10.3760/cma.j.cn112138-20210217-00131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the collateral circulation compensation model in patients with favorable prognosis of basilar artery occlusion/severe stenosis treated with drugs or endovascular therapy. Methods: Clinical data of patients with basilar artery occlusion/severe stenosis and good clinical outcome were retrospectively collected in the Department of Neurology, Sixth Medical Center of PLA General Hospital from January 2019 to January 2020. They were divided into intensive drug therapy group and combined endovascular therapy group. The number and ways of collateral compensation pathway described by digital substraction angiography (DSA) were analyzed, and the characteristics of the collateral compensation model were summarized. SPSS22.0 software was used for statistical analysis, and the constituent ratio (%) was used for statistical description of the enumeration data. Results: A total of 32 eligible patients were included, including 27 males and 5 females, with an average age 45-76 (59±10) years. The compensation model included posterior communicating artery-posterior cerebral artery (13 cases, 40.6%), posterior communicating artery-posterior cerebral artery-basilar artery (10 cases, 31.2%), cerebellar artery-anastomotic branches of superior cerebellar artery (8 cases, 25.0%), anterior choroid artery-anastomotic branches of posterior choroid artery (2 cases, 6.2%), collateral circulation not established (11 cases, 34.4%).In drug treatment group, collateral compensation was found in the majority (14/15), with mainly posterior communicating artery (10/14).Most patients in combined treatment group did not develop collateral compensation (10/17), anastomotic branches of PICA-SCA were the main routes (6/7). Conclusion: In patients with basilar artery occlusion/severe stenosis, favorable clinical outcome can be achieved in both groups of patients treated with intensive drug therapy or endovascular therapy.
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Affiliation(s)
- Y Bian
- Department of Neurology, the Sixth Medical Center of PLA General Hospital, Beijing 100048, China
| | - K Y Wang
- Department of Neurology, the Sixth Medical Center of PLA General Hospital, Beijing 100048, China
| | - Y Miao
- Department of Neurology, the Sixth Medical Center of PLA General Hospital, Beijing 100048, China
| | - X L Zhong
- Department of Neurology, the Sixth Medical Center of PLA General Hospital, Beijing 100048, China
| | - S S Jia
- Department of Neurology, the Sixth Medical Center of PLA General Hospital, Beijing 100048, China
| | - F Qiu
- Department of Neurology, the Sixth Medical Center of PLA General Hospital, Beijing 100048, China
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Yu XP, Liu CG, Qiu F, Xu YQ, Xing F, Yin JQ, Han SJ, Yu H, Han Y, Jing X, He GJ. CircRNA_100395 protects breast carcinoma deterioration by targeting MAPK6. Eur Rev Med Pharmacol Sci 2021; 24:12216-12223. [PMID: 33336740 DOI: 10.26355/eurrev_202012_24012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE This study aims to uncover the differential expression of circRNA_100395 in breast carcinoma specimens, and its regulatory effect on cancer cell phenotypes. The role of circRNA_100395 in affecting breast carcinoma progression and the molecular mechanism are explored as well. PATIENTS AND METHODS CircRNA_100395 expressions in breast carcinoma and paracancerous tissues were detected. The influence of circRNA_100395 level on clinical indicators of breast carcinoma patients was analyzed. In vitro regulations of circRNA_100395 on phenotypes of breast carcinoma cells were examined by CCK-8, colony formation, and transwell assay. The interaction between circRNA_100395 and MAPK6 was confirmed by Dual-Luciferase reporter assay and rescue assays. RESULTS CircRNA_100395 was downregulated in breast carcinoma tissues and cell lines. Its level was negatively correlated to tumor staging and tumor size of breast carcinoma. Overexpression of circRNA_100395 in SKBR3 and MDA-MB-231 cells weakened proliferative and migratory abilities. MAPK6 was the target gene of circRNA_100395. Overexpression of MAPK6 reversed the anti-cancer effect of circRNA_100395 on breast carcinoma. CONCLUSIONS CircRNA_100395 serves as an anti-cancer gene in breast carcinoma progression by targeting MAPK6, and its level is negatively correlated to tumor staging and tumor size of breast carcinoma. CircRNA_100395 can be utilized as a potential biomarker and therapeutic target of breast carcinoma.
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Affiliation(s)
- X-P Yu
- Secondary Department of Breast Surgery, Shengjing Hospital of China Medical University, Shenyang, China.
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Wang Q, Qiu F, Wu H, Fan YM. New compound heterozygous SPINK5 mutations in a Chinese infant with Netherton syndrome. J Eur Acad Dermatol Venereol 2021; 35:e782-e784. [PMID: 34138484 DOI: 10.1111/jdv.17457] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Q Wang
- Department of Dermatology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - F Qiu
- Department of Dermatology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - H Wu
- Department of Dermatology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - Y-M Fan
- Department of Dermatology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
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Qiu F, Gu P, Liu W, Li D. The spectrum characteristics of Parkinson's disease (PD) patients with sleep disorders. Neurol Sci 2021; 43:327-333. [PMID: 33905014 DOI: 10.1007/s10072-021-05240-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Accepted: 04/08/2021] [Indexed: 11/28/2022]
Abstract
OBJECTIVE This study aimed to explore the spectrum characteristics of Parkinson's disease (PD) patients with sleep disorders. METHODS This retrospective study included 101 PD patients who received treatment at our hospital between August 2018 and August 2020. According to the modified Hoehn-Yahr (H-Y) classification, the patients were divided into the early-stage (grade I and II) group (N=21), the mid-stage (grade III) group (N=28), and the late-stage (grade IV) groups (N=20). Detailed information including general data and clinical data was collected. RESULTS Multivariate logistic regression analysis showed that lower total cholesterol, triglyceride, and uric acid levels were protective factors against the occurrence of sleep disorder, and increased Madopar dosage ≥ 600 mg, Self-rating Anxiety Scale (SAS), and Self-rating Depression Scale (SDS) were risk factors for the occurrence of sleep disorder. The levels of total cholesterol, triglyceride, and uric acid, total sleep time, sleep efficiency, REM sleep latency score, minimum oxygen saturation, and Madopar dosage ≥ 600 mg in the late-stage group were lower than those in the mid-stage group. Meanwhile, homocysteine levels, Pittsburgh Sleep Quality Index, Epworth Sleepiness Scale, SAS, SDS score, sleep latency score, hypopnea index, the number of times of waking up, and the number of episodes of hypopnea and apnea were higher than those in the mid-stage group. CONCLUSIONS Decreased levels of total cholesterol, triglyceride, and uric acid were associated with the occurrence of PD. Lower Madopar doses and reducing anxiety and depression might control the occurrence and development of sleep disorders in PD patients.
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Affiliation(s)
- Fucheng Qiu
- Department of Neurology, The First Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - Ping Gu
- Department of Neurology, The First Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - Wencong Liu
- Department of Ultrasound, The First Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - Dong Li
- Department of Vertigo Center, The First Hospital of Hebei Medical University, No. 89 Donggang Road, Shijiazhuang, Hebei, China.
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Qiu F, Zhang L, Zheng J, Cao L, Zhang Z, Deng Y. [Amentoflavone inhibits M1 polarization of THP-1-derived foam cells by activating PPAR- α/ γ]. Nan Fang Yi Ke Da Xue Xue Bao 2021; 41:344-351. [PMID: 33849824 DOI: 10.12122/j.issn.1673-4254.2021.03.05] [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] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
OBJECTIVE To investigate the mechanism by which amentoflavone inhibits polarization of THP-1-derived foam cells to M1 phenotype. OBJECTIVE Human monocyte cell line THP-1 was stimulated to differentiate into M1-type macrophages using phorbol 12-myrislate13-acetate (PMA) combined with lipopolysaccharide (LPS) and recombinant human interferon-γ (rhlFN-γ). M1 polarization of THP-1-derived macrophages was confirmed by observing morphological changes of the cells and detecting the mRNA expression of L-6 and TNF-α with RT-qPCR. THP-1-derived foam cells treated with 5 or 10 μmol/L amentoflavone for 24 h were examined for cytokines using ELISA. The mRNA and protein expressions of IL-6, IL-10, TNF-α, TGF-β, PPAR-α/γ, Arg-1 and Fizz1 in the cells were detected using RT-qPCR and Western blotting. OBJECTIVE Amentoflavone prevented induced M1 polarization of THP-1 cells. Amentoflavone down-regulated the mRNA expressions of IL-6 and TNF-α, up-regulated mRNA expressions of IL-8 and TGF-β mRNA (P < 0.05), and increased the protein expressions of PPAR-α/γ, Arg-1 and Fizz1. Molecular docking simulation showed that amentoflavone could bind to the surface of PPARα/γ. OBJECTIVE Amentoflavone can inhibit the differentiation of macrophages into M1 type by activating PPAR-α/γ and restoring the expressions of the gene Arg-1 and Fizz1.
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Affiliation(s)
- F Qiu
- Department of Laboratory Medicine, Nanhai Hospital, Southern Medical University, Foshan 528244, China
| | - L Zhang
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510515, China
| | - J Zheng
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510515, China
| | - L Cao
- Department of Laboratory Medicine, Nanhai Hospital, Southern Medical University, Foshan 528244, China
| | - Z Zhang
- Department of Laboratory Medicine, Nanhai Hospital, Southern Medical University, Foshan 528244, China
| | - Y Deng
- Department of Emergency, Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510120, China
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Dhar K, Basma H, Qiu F, Um J, Lowes B. Micro RNA Expression of Heart Failure Patients and Responses to Left Ventricular Assistant Device Support. J Heart Lung Transplant 2021. [DOI: 10.1016/j.healun.2021.01.1161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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20
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Zhong F, Deng J, Duan X, Luo H, Lin H, Qiu F. P36.10 Prognostic Value and Transcriptional Expression Profile of GINS Family Members in Lung Adenocarcinoma. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.1641] [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: 11/26/2022]
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21
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Qiu F, Reyes-Ortega F, Schneider-Futschik E. WS09.5 Clinical applications of using drug monitoring for standard caftor regimens. J Cyst Fibros 2021. [DOI: 10.1016/s1569-1993(21)00967-x] [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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Zuo ZG, Pei L, Liu XJ, Qiu F. [Lung cancer with intracranial hypotension: a case report]. Zhonghua Zhong Liu Za Zhi 2020; 42:971-972. [PMID: 33256311 DOI: 10.3760/cma.j.cn112152-20190406-00217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Affiliation(s)
- Z G Zuo
- Department of Critical Medicine, the First Hospital of Qinhuangdao, Qinhuangdao 066000, China
| | - L Pei
- Department of Clinical Laboratory, the First Hospital of Qinhuangdao, Qinhuangdao 066000, China
| | - X J Liu
- Department of Critical Medicine, the First Hospital of Qinhuangdao, Qinhuangdao 066000, China
| | - F Qiu
- Department of Critical Medicine, the First Hospital of Qinhuangdao, Qinhuangdao 066000, China
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Kong LX, Qiu F, Wang HM, Shan XF, Hu P, Zhong S, Wang N. [Economic evaluation of plasma exchange combined with dual plasma adsorption therapy for early, mid and late stage liver failure]. Zhonghua Gan Zang Bing Za Zhi 2020; 28:434-440. [PMID: 32536061 DOI: 10.3760/cma.j.cn501113-20190122-00025] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To compare the economic characteristics of the four artificial liver models [plasma exchange, half-dose plasma exchange combined with double plasma adsorption (DPMAS), pre-equal amount of plasma exchange followed by DPMAS, and pre-DPMAS followed by equal amount of plasma exchange] in the treatment of liver failure. Methods: A decision tree model was established with the Treeage pro 2011 software. The cost-effectiveness ratio and incremental cost-effectiveness value of four different treatment modalities were calculated and compared in patients with liver failure at early, mid and late stages, respectively. The sensitivity analysis of the model was performed using data from the preliminary research results of these groups. Results: The cost-effectiveness ratio and incremental cost-effectiveness value of patients treated with artificial liver therapy with half-dose plasma exchange combined with DPAMS plan in early stage liver failure were 89 547.79 and 34 665.34, which was lower than per capita GDP, so the increased cost had cost-effective advantages. In the middle and late stage of liver failure, the cost-effectiveness ratio and incremental cost-effectiveness value of pre-DPMAS followed by equal plasma exchange plan was 122 865.5 and 284 334.97, and 70 744.55 and 75 299.48, respectively, which was less than three times of per capita GDP. The increased cost was acceptable and had economic advantages. The sensitivity analysis results showed that the basic analysis results were reliable. Conclusion: Half-dose plasma exchange combined with DPAMS plan is the most cost-effective treatment for early liver failure, while pre-DPMAS followed by equal plasma exchange plan is the most economical treatment for mid and late stage liver failure.
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Affiliation(s)
- L X Kong
- Department of Pharmacy, First Affiliated Hospital of Chongqing Medical University, Chongqing 400042, China
| | - F Qiu
- Department of Pharmacy, First Affiliated Hospital of Chongqing Medical University, Chongqing 400042, China
| | - H M Wang
- Department of Pharmacy, First Affiliated Hospital of Chongqing Medical University, Chongqing 400042, China
| | - X F Shan
- Department of Pharmacy, First Affiliated Hospital of Chongqing Medical University, Chongqing 400042, China
| | - P Hu
- Department of Infection, Second Affiliated Hospital of Chongqing Medical University, Institute of Viral Hepatitis, Chongqing Medical University, Key Laboratory of Molecular Biology of Infectious Diseases, Ministry of Education, Chongqing 400010, China
| | - S Zhong
- Department of Infection, Second Affiliated Hospital of Chongqing Medical University, Institute of Viral Hepatitis, Chongqing Medical University, Key Laboratory of Molecular Biology of Infectious Diseases, Ministry of Education, Chongqing 400010, China
| | - N Wang
- Department of Infection, Second Affiliated Hospital of Chongqing Medical University, Institute of Viral Hepatitis, Chongqing Medical University, Key Laboratory of Molecular Biology of Infectious Diseases, Ministry of Education, Chongqing 400010, China
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Ravindran M, Henning K, Qiu F, Manoragavan R, Dvir D, Shuvy M, Sud M, Wijeysundera H. PREDICTORS OF LONG-TERM CARDIOVASCULAR VERSUS NON-CARDIOVASCULAR MORTALITY AND REPEAT INTERVENTION IN TRANSCATHETER AORTIC VALVE REPLACEMENT. Can J Cardiol 2020. [DOI: 10.1016/j.cjca.2020.07.081] [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: 10/23/2022] Open
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25
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Zhou LP, Qiu F, Zhang ZF, Wang CM, Dong YL, Liu JP. SYNTHESIS, CRYSTAL STRUCTURE, ANTI-LUNG
CANCER ACTIVITY OF 2-(4-FLUOROPHENYL)-5-
(5-IODO-2-METHYLBENZYL)THIOPHENE. J STRUCT CHEM+ 2020. [DOI: 10.1134/s0022476620070148] [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: 11/23/2022]
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26
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Wang J, Cai K, He X, Shen X, Wang J, Liu J, Xu J, Qiu F, Lei W, Cui L, Ge Y, Wu T, Zhang Y, Yan H, Chen Y, Yu J, Ma X, Shi H, Zhang R, Li X, Gao Y, Niu P, Tan W, Wu G, Jiang Y, Xu W, Ma X. Multiple-centre clinical evaluation of an ultrafast single-tube assay for SARS-CoV-2 RNA. Clin Microbiol Infect 2020; 26:1076-1081. [PMID: 32422410 PMCID: PMC7227500 DOI: 10.1016/j.cmi.2020.05.007] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 05/06/2020] [Accepted: 05/07/2020] [Indexed: 12/13/2022]
Abstract
OBJECTIVE To evaluate the performance of an ultrafast single-tube nucleic acid isothermal amplification detection assay for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) RNA using clinical samples from multiple centres. METHODS A reverse transcription recombinase-aided amplification (RT-RAA) assay for SARS-CoV-2 was conducted within 15 minutes at 39°C with portable instruments after addition of extracted RNA. The clinical performance of RT-RAA assay was evaluated using 947 clinical samples from five institutions in four regions of China; approved commercial fluorescence quantitative real-time PCR (qRT-PCR) kits were used for parallel detection. The sensitivity and specificity of RT-RAA were compared and analysed. RESULTS The RT-RAA test results of 926 samples were consistent with those of qRT-PCR (330 were positive, 596 negative); 21 results were inconsistent. The sensitivity and specificity of RT-RAA was 97.63% (330/338, 95% confidence interval (CI) 95.21 to 98.90) and 97.87% (596/609, 95% CI 96.28 to 98.81) respectively. The positive and negative predictive values were 96.21% (330/343, 95% CI 93.45 to 97.88) and 98.68% (596/604, 95% CI 97.30 to 99.38) respectively. The total coincidence rate was 97.78% (926/947, 95% CI 96.80 to 98.70), and the kappa was 0.952 (p < 0.05). CONCLUSIONS With comparable sensitivity and specificity to the commercial qRT-PCR kits, RT-RAA assay for SARS-CoV-2 exhibited the distinctive advantages of simplicity and rapidity in terms of operation and turnaround time.
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Affiliation(s)
- J Wang
- National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - K Cai
- Hubei Center for Disease Control and Prevention, Wuhan 430000, China
| | - X He
- National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - X Shen
- National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - J Wang
- National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China; Hebei Medical University, Shijiazhuang 050031, China
| | - J Liu
- National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - J Xu
- Hubei Center for Disease Control and Prevention, Wuhan 430000, China
| | - F Qiu
- National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - W Lei
- National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - L Cui
- NHC Key Laboratories of Enteric Pathogenic Microbiology, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, 210009, China
| | - Y Ge
- NHC Key Laboratories of Enteric Pathogenic Microbiology, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, 210009, China
| | - T Wu
- NHC Key Laboratories of Enteric Pathogenic Microbiology, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, 210009, China
| | - Y Zhang
- Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou 310000, China
| | - H Yan
- Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou 310000, China
| | - Y Chen
- Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou 310000, China
| | - J Yu
- The NO.1 Affiliated hospital of Shanxi Datong University, Institute of Brain Science-Shanxi Key Laboratory of Inflammatory Neurodegenerative Diseases, Datong 037000, China
| | - X Ma
- The NO.1 Affiliated hospital of Shanxi Datong University, Institute of Brain Science-Shanxi Key Laboratory of Inflammatory Neurodegenerative Diseases, Datong 037000, China; The Fifth People's Hospital of DaTong, Datong 037000, China
| | - H Shi
- Datong City Center for Disease Control and Prevention, Datong 037000, China
| | - R Zhang
- National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China; Hebei Medical University, Shijiazhuang 050031, China
| | - X Li
- National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Y Gao
- National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China; Hebei Medical University, Shijiazhuang 050031, China
| | - P Niu
- National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - W Tan
- National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - G Wu
- National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Y Jiang
- Hubei Center for Disease Control and Prevention, Wuhan 430000, China.
| | - W Xu
- National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China.
| | - X Ma
- National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China; Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan 430071, China.
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Qiu F, Gu WG, Li C, Nie SL, Yu F. Analysis on expression level and diagnostic value of miR-19 and miR-21 in peripheral blood of patients with undifferentiated lung cancer. Eur Rev Med Pharmacol Sci 2019; 22:8367-8373. [PMID: 30556877 DOI: 10.26355/eurrev_201801_16534] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE This paper aims to investigate the expression level and diagnostic value of miR-19 miR-21 in peripheral blood of patients with undifferentiated lung cancer. PATIENTS AND METHODS 58 patients with undifferentiated lung cancer hospitalized in the oncology department of The First Affiliated Hospital of Nanchang University from September 2014 to May 2017 were selected as the experimental group, and 42 healthy volunteers in the same period as the control group at the same time. General clinical data in the two groups were collected. The expression levels of miR-19 and miR-21 in peripheral blood of the two groups were measured by Real-Time fluorescence quantitative Polymerase Chain Reaction. The expression levels of peripheral blood miR-19 and miR-21 in large and small cell lung cancer of undifferentiated lung cancer were analyzed and compared. ROC curve was used to analyze the diagnostic value of miR-19 and miR-21 in undifferentiated lung cancer. RESULTS The expression levels of miR-19 and miR-21 in peripheral blood of the experimental group were significantly higher than those of the control group (p<0.05). The AUC of miR-19 in the diagnosis of undifferentiated lung cancer was 0.854; the sensitivity was 98.30%; the specificity was 54.29% and the cut off was 3.54. The AUC of miR-21 in the diagnosis of undifferentiated lung cancer was 0.923; the sensitivity was 86.20%; the specificity was 76.19% and the cut off was 3.89. The AUC of combined detection in the diagnosis of undifferentiated lung cancer was 0.952; the sensitivity was 86.60%; the specificity was 97.62% and the cut off was 0.68. The specificity of combined detection was higher than that of miR-19 and miR-21 (p<0.05). CONCLUSIONS MiR-19 and miR-21 are highly expressed in peripheral blood of patients with undifferentiated lung cancer; miR-19 and miR-21 are expected to be used as diagnostic markers for undifferentiated lung cancer.
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Affiliation(s)
- F Qiu
- Department of Oncology, The First Affiliated Hospital of Nanchang University, Nanchang, P.R. China.
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Lu S, Chen G, Sun Y, Sun S, Chang J, Yao Y, Chen Z, Ye F, Lu J, Shi J, He J, Liu X, Zhang Y, Liu Z, Fang J, Cheng Y, Hu C, Mao W, Hu Y, Gong Y, Shan L, Yang Z, Song Y, Li W, Bai C, Wang B, Ma R, Zheng Z, Liu M, Jie Z, Cao L, Liao W, Pan H, Huang D, Chen Y, Yang J, Qin S, Ma S, Liang L, Liu Z, Zhou J, Tao M, Huang Y, Qiu F, Huang Y, Hua Y, Chen Y, Su W. MA14.05 A Randomized Phase III Trial of Fruquintinib Versus Placebo in Patients with Advanced Non-Small Cell Lung Cancer (FALUCA). J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.613] [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: 11/29/2022]
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Schuerle S, Soleimany AP, Yeh T, Anand GM, Häberli M, Fleming HE, Mirkhani N, Qiu F, Hauert S, Wang X, Nelson BJ, Bhatia SN. Synthetic and living micropropellers for convection-enhanced nanoparticle transport. Sci Adv 2019; 5:eaav4803. [PMID: 31032412 PMCID: PMC6486269 DOI: 10.1126/sciadv.aav4803] [Citation(s) in RCA: 73] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Accepted: 03/08/2019] [Indexed: 05/09/2023]
Abstract
Nanoparticles (NPs) have emerged as an advantageous drug delivery platform for the treatment of various ailments including cancer and cardiovascular and inflammatory diseases. However, their efficacy in shuttling materials to diseased tissue is hampered by a number of physiological barriers. One hurdle is transport out of the blood vessels, compounded by difficulties in subsequent penetration into the target tissue. Here, we report the use of two distinct micropropellers powered by rotating magnetic fields to increase diffusion-limited NP transport by enhancing local fluid convection. In the first approach, we used a single synthetic magnetic microrobot called an artificial bacterial flagellum (ABF), and in the second approach, we used swarms of magnetotactic bacteria (MTB) to create a directable "living ferrofluid" by exploiting ferrohydrodynamics. Both approaches enhance NP transport in a microfluidic model of blood extravasation and tissue penetration that consists of microchannels bordered by a collagen matrix.
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Affiliation(s)
- S. Schuerle
- Institute for Translational Medicine, Department of Health Sciences and Technology, ETH Zurich, CH-8092 Zurich, Switzerland
| | - A. P. Soleimany
- Harvard Graduate Program in Biophysics, Harvard University, Boston, MA 02115, USA
- Institute for Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, MA 02142, USA
| | - T. Yeh
- Institute for Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, MA 02142, USA
| | - G. M. Anand
- Institute for Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, MA 02142, USA
| | - M. Häberli
- Institute of Robotics and Intelligent Systems, ETH Zurich, CH-8092 Zurich, Switzerland
| | - H. E. Fleming
- Institute for Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, MA 02142, USA
| | - N. Mirkhani
- Institute for Translational Medicine, Department of Health Sciences and Technology, ETH Zurich, CH-8092 Zurich, Switzerland
| | - F. Qiu
- Institute of Robotics and Intelligent Systems, ETH Zurich, CH-8092 Zurich, Switzerland
| | - S. Hauert
- Engineering Mathematics, University of Bristol, Bristol BS8 1UB, UK
| | - X. Wang
- Institute of Robotics and Intelligent Systems, ETH Zurich, CH-8092 Zurich, Switzerland
| | - B. J. Nelson
- Institute of Robotics and Intelligent Systems, ETH Zurich, CH-8092 Zurich, Switzerland
| | - S. N. Bhatia
- Institute for Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, MA 02142, USA
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Marble Center for Cancer Nanomedicine, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Department of Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA 02115, USA
- Broad Institute of Massachusetts Institute of Technology and Harvard, Cambridge, MA 02139, USA
- Howard Hughes Medical Institute, Cambridge, MA 02139, USA
- Wyss Institute for Biologically Inspired Engineering at Harvard, Boston, MA 02115, USA
- Corresponding author.
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Oakes G, Tang J, Masih S, Qiu F, Fang J, Wijeysundera H, Woodward G. OUTCOMES FOLLOWING TRANSCATHETER AORTIC VALVE IMPLANTATION (TAVI) IN ONTARIO (2013-2016). Can J Cardiol 2018. [DOI: 10.1016/j.cjca.2018.07.170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Elbaz Greener G, Qiu F, Masih S, Fang J, Austin P, Cantor W, Dvir D, Asgar A, Webb J, Ko D, Wijeysundera H. PROFILING HOSPITAL PERFORMANCE BASED ON MORTALITY AFTER TRANS-CATHETER AORTIC VALVE REPLACEMENT IN ONTARIO, CANADA. Can J Cardiol 2018. [DOI: 10.1016/j.cjca.2018.07.207] [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] Open
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Sandkovsky U, Qiu F, Kalil AC, Florescu A, Wilson N, Manning C, Florescu DF. Risk Factors for the Development of Cytomegalovirus Resistance in Solid Organ Transplantation: A Retrospective Case-Control Study. Transplant Proc 2018; 50:3763-3768. [PMID: 30577267 DOI: 10.1016/j.transproceed.2018.08.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Revised: 07/16/2018] [Accepted: 08/03/2018] [Indexed: 02/09/2023]
Abstract
BACKGROUND Cytomegalovirus (CMV) resistance is an emerging problem in solid organ transplant recipients. Risk factors are not well defined. METHODS Recipients with CMV viremia of solid organ transplants who underwent CMV resistance testing between January 2010 and March 2016 were divided in 2 groups: proven CMV resistance and refractory CMV infection. A third group was added to compare patients with viremia during the study period with patients with no resistance proven or suspected. We aimed to identify risk factors associated with the occurrence of CMV genotypic resistance. RESULTS Forty-nine patients underwent resistance testing. Eleven (22.45%) developed genotypic mutations. Group 1 vs groups 2 and 3 had higher prednisone (P = .01) and tacrolimus levels (P = .03); did not respond to antivirals (P < .0001); and had a higher rate of fungal infections (P = .03). CMV resistance was less common in liver and kidney vs heart, small bowel, and mutivisceral recipients (P = .0007). There was no difference in duration of antiviral prophylaxis, viremia while on antiviral prophylaxis, rate of end-organ disease, graft loss, and overall survival. Persistent clinical disease and viremia despite antiviral therapy was the most important risk factor for development of CMV resistance. CONCLUSION Persistent clinical disease despite antiviral therapy is an important risk factor and may in part be due to a high degree of immunosuppression. Graft loss and survival were not impacted by CMV resistance.
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Affiliation(s)
- U Sandkovsky
- Division of Infectious Diseases, University of Nebraska Medical Center, Omaha, Nebraska, USA.
| | - F Qiu
- Department of Biostatistics, College of Public Health, University of Nebraska Medical Center, Omaha, Nebraska, USA
| | - A C Kalil
- Division of Infectious Diseases, University of Nebraska Medical Center, Omaha, Nebraska, USA
| | - A Florescu
- University of Nebraska-Lincoln, Lincoln, Nebraska, USA
| | - N Wilson
- Division of Infectious Diseases, University of Nebraska Medical Center, Omaha, Nebraska, USA
| | - C Manning
- Division of Infectious Diseases, University of Nebraska Medical Center, Omaha, Nebraska, USA
| | - D F Florescu
- Division of Infectious Diseases, University of Nebraska Medical Center, Omaha, Nebraska, USA; Division of Transplant Surgery, University of Nebraska Medical Center, Omaha, Nebraska, USA
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Majorant D, Qiu F, Kalil AC, Wilson N, Florescu DF. Adenovirus-A Deadly Disease in the Solid Organ Transplant Population: Risk Factors and Outcomes. Transplant Proc 2018; 50:3769-3774. [PMID: 30577268 DOI: 10.1016/j.transproceed.2018.07.004] [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] [Received: 05/07/2018] [Accepted: 07/04/2018] [Indexed: 10/28/2022]
Abstract
BACKGROUND The importance of adenoviruses (AdV) in the immunocompromised population has been more recognized in recent decades. We aimed to assess the risk factors and outcomes associated with AdV in solid organ transplant recipients. METHODS This was a retrospective cohort study of solid organ transplant recipients who tested positive for AdV between January 1, 2004, and March 12, 2014. The subjects were divided in 2 groups: AdV asymptomatic infection and AdV disease. The characteristics and outcomes of the groups were compared using Wilcoxon rank-sum and Fisher exact tests; logistic regression was performed to evaluate risk factors. RESULTS A total of 125 patients were included with a mean (SD) age of 9.79 years (16.54); 49.6% were male, and 20.8% had AdV disease. No significant risk factors were found for AdV disease by univariate analyses. Comparing patients with disease and with asymptomatic infection, rejections during the first year after testing positive for AdV were 7 (26.92%) vs 17 (17.17%); mortality at 1 year post-transplantation was 26.92% vs 6.06% (P = .006), respectively, and at 1 year after testing positive for AdV was 38.46% vs 11.11% (P = .002), respectively. CONCLUSION No independent risk factor for AdV disease was identified, but patients with AdV disease had a significantly higher mortality compared with those with asymptomatic infection.
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Affiliation(s)
- D Majorant
- Transplant Infectious Diseases Program, University of Nebraska Medical Center, Omaha, NE
| | - F Qiu
- Department of Biostatistics Division, University of Nebraska Medical Center, Omaha, NE
| | - A C Kalil
- Transplant Infectious Diseases Program, University of Nebraska Medical Center, Omaha, NE
| | - N Wilson
- Transplant Infectious Diseases Program, University of Nebraska Medical Center, Omaha, NE
| | - D F Florescu
- Transplant Infectious Diseases Program, University of Nebraska Medical Center, Omaha, NE; Transplant Surgery Division, University of Nebraska Medical Center, Omaha, NE.
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Chambers HE, Pelish P, Qiu F, Florescu DF. Perioperative Prophylaxis for Total Artificial Heart Transplantation. Transplant Proc 2018; 49:2169-2175. [PMID: 29149978 DOI: 10.1016/j.transproceed.2017.09.020] [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] [Received: 06/15/2017] [Accepted: 09/23/2017] [Indexed: 12/01/2022]
Abstract
BACKGROUND Practice variation regarding perioperative antimicrobial prophylaxis in total artificial heart transplantations (TAH-t) across institutions is unknown. The aim of our survey was to assess the current practices for prevention of infection in TAH-t recipients among different programs. METHODS An electronic survey was sent to programs that implant Syncardia TAH (Syncardia Systems, Tuscon, Ariz, USA). Proportions were analyzed for categorical variables; means and SDs were analyzed for continuous variables. RESULTS The majority of centers (80.8%) had a formal surgical infection prophylaxis protocol. For non-penicillin-allergic patients, five (20.1%) institutions reported using a 4-drug regimen, seven (29.2%) used a 3-drug regimen, five (20.1%) used a 2-drug regimen, and seven (29.2%) used a cephalosporin alone. Similar data was seen in the penicillin-allergic patients. Infections were reported to occur postoperatively in 52.2% centers. During the first month after TAH-t, bacteremia represented 27.3%, driveline infections 27.2%, pulmonary infections 9%, and mediastinal infections 18.2%. The most common organisms seen within the first month were Candida spp., Escherichia coli, and Pseudomonas aeruginosa (21.4%). In 65% of centers, the mean rate of death post-TAH-t due to infection was 14.5% (SD, 22.3%). The mean rate of patients surviving until orthotopic heart transplantation was 58.6% (SD, 27.7%). CONCLUSIONS Preventing infections post-TAH-t is key to decreasing morbidity and mortality. All institutions administered perioperative prophylaxis for TAH-t with significant variation among the centers. The majority of the centers have a formal perioperative prophylactic protocol.
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Affiliation(s)
- H E Chambers
- Transplant Infectious Diseases Program, University of Nebraska Medical Center, Omaha, Nebraska.
| | - P Pelish
- College of Nursing, University of Nebraska Medical Center, Omaha, Nebraska
| | - F Qiu
- Department of Biostastics, University of Nebraska Medical Center, Omaha, Nebraska
| | - D F Florescu
- Transplant Infectious Diseases Program, University of Nebraska Medical Center, Omaha, Nebraska; Transplant Surgery Division, University of Nebraska Medical Center, Omaha, Nebraska
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Guzman L, Qiu F, Kalil AC, Mercer DF, Langnas A, Florescu DF. Risk factors for Clostridium difficile infection in intestinal transplant recipients during the first year post-transplant. Transpl Infect Dis 2018; 20:e12858. [PMID: 29427406 DOI: 10.1111/tid.12858] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Revised: 08/14/2017] [Accepted: 10/07/2017] [Indexed: 12/18/2022]
Abstract
BACKGROUND Clostridium difficile is the most common cause of healthcare-associated infectious diarrhea. Risk factors for C. difficile infections (CDI) in intestinal transplant recipients (ITR) are not well-defined. The aim of our study was to assess specific risk factors for CDI in ITR. METHODS This is a 1:3 case-control study that included 29 ITR who developed CDI (cases) and 87 ITR without CDI (controls) observed during the first year post-transplantation. Wilcoxon rank sum and Fisher's exact tests were used to compare variables. Univariate and multivariable conditional logistic regressions analysis were performed to identify risk factors for CDI. RESULTS The multivariable conditional logistic regression analysis showed that proton pump inhibitors (PPI) administration (odds ratio [OR] = 0.06; 95% confidence interval [CI]: 0.007-0.52; P = .01) was the only factor associated with lower rates of CDI. Outcomes for cases vs controls: rejection episodes 24.14% vs 20.69% (P = .7), graft loss 0% vs 2.3% (P = .99), and survival rate 1 year post-transplantation 79.3% (59.6-90.1%) vs 87.2% (78.1-92.7%) (P = .38). CONCLUSIONS Proton pump inhibitor administration might be protective for CDI in ITR. Risks factors for CDI might be different in ITR compared to other populations; anatomical differences and medications administered in the post-transplantation period may affect intestinal microbiota.
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Affiliation(s)
- L Guzman
- Infectious Diseases Division, University of Nebraska Medical Center, Omaha, NE, USA
| | - F Qiu
- College of Public Health, University of Nebraska Medical Center, Omaha, NE, USA
| | - A C Kalil
- Infectious Diseases Division, University of Nebraska Medical Center, Omaha, NE, USA
| | - D F Mercer
- Transplant Surgery Division, University of Nebraska Medical Center, Omaha, NE, USA
| | - A Langnas
- Transplant Surgery Division, University of Nebraska Medical Center, Omaha, NE, USA
| | - D F Florescu
- Infectious Diseases Division, University of Nebraska Medical Center, Omaha, NE, USA.,Transplant Surgery Division, University of Nebraska Medical Center, Omaha, NE, USA
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Li Y, Qiu F, Yan H, Wan X, Wang M, Ren K, Xu Q, Lv L, Yin C, Liu X, Zhang H, Mahmoud K. Increasing the autotrophic growth of
Chlorella
USTB
‐01 via the control of bacterial contamination by
Bdellovibrio
USTB
‐06. J Appl Microbiol 2018; 124:1131-1138. [DOI: 10.1111/jam.13682] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Revised: 09/04/2017] [Accepted: 11/07/2017] [Indexed: 11/29/2022]
Affiliation(s)
- Y. Li
- School of Chemistry and Biological Engineering University of Science and Technology Beijing Beijing China
| | - F. Qiu
- School of Chemistry and Biological Engineering University of Science and Technology Beijing Beijing China
| | - H. Yan
- School of Chemistry and Biological Engineering University of Science and Technology Beijing Beijing China
| | - X. Wan
- School of Chemistry and Biological Engineering University of Science and Technology Beijing Beijing China
| | - M. Wang
- School of Chemistry and Biological Engineering University of Science and Technology Beijing Beijing China
| | - K. Ren
- School of Chemistry and Biological Engineering University of Science and Technology Beijing Beijing China
| | - Q. Xu
- School of Chemistry and Biological Engineering University of Science and Technology Beijing Beijing China
| | - L. Lv
- School of Chemistry and Biological Engineering University of Science and Technology Beijing Beijing China
| | - C. Yin
- School of Chemistry and Biological Engineering University of Science and Technology Beijing Beijing China
| | - X. Liu
- School of Chemistry and Biological Engineering University of Science and Technology Beijing Beijing China
| | - H. Zhang
- School of Chemistry and Biological Engineering University of Science and Technology Beijing Beijing China
| | - K. Mahmoud
- School of Chemistry and Biological Engineering University of Science and Technology Beijing Beijing China
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Wang MD, Cai WW, Qiu WS, Qiu F, Lv WS. A Changing of the Abbreviated Injury Scale that Improves Accuracy and Simplifies Scoring. HONG KONG J EMERG ME 2017. [DOI: 10.1177/102490791302000303] [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: 11/15/2022] Open
Abstract
Objective We present here a changing of the abbreviated injury scale (AIS). It is called the changed injury severity score (CISS), and significantly outperforms the venerable but dated the injury severity score (ISS) and the new injury severity score (NISS) as a predictor of mortality. Methods The CISS is defined as a change of AIS values by raising each AIS severity score (1-6) by a power of 4.12 divided by 30.33 and then summing the three most severe (i.e. highest AIS) regardless of body regions. CISS values were calculated for every patient in two large independent data sets: 3455, 3900 patients treated during a five-year period at the class A grade III comprehensive hospitals in Affiliated Hospital of Hangzhou Normal University (Hangzhou) and Zhejiang Provincial People's Hospital (Zhejiang). The power of CISS to predict morality was then compared with previously calculated NISS values of the same group patients in the two hospitals. Results We found CISS was more accurate than NISS to predict the survival. The receiver operating characteristic (ROC) of NISS and CISS in Hangzhou were 0.919 and 0.937 respectively (p=0.026), whereas for Zhejiang were 0.917 and 0.940 respectively (p=0.022). Moreover, CISS provided a better fit throughout its entire range of prediction. Hosmer-Lemeshow (H-L) statistic for NISS and CISS in Hangzhou were 24.00 (p=0.002) and 19.38 (p=0.007), whereas in Zhejiang were 22.70 (p=0.001) and 18.43 (p=0.005) respectively. Conclusions CISS is a modified version of NISS/ISS with better statistical property and can be considered in trauma research.
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Zhao T, Zhang H, Jin C, Qiu F, Wu Y, Shi L. Melatonin mediates vasodilation through both direct and indirect activation of BK Ca channels. J Mol Endocrinol 2017; 59:219-233. [PMID: 28676563 DOI: 10.1530/jme-17-0028] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [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: 06/07/2017] [Accepted: 07/03/2017] [Indexed: 01/14/2023]
Abstract
Melatonin, synthesized primarily by the pineal gland, is a neuroendocrine hormone with high membrane permeability. The vascular effects of melatonin, including vasoconstriction and vasodilation, have been demonstrated in numerous studies. However, the mechanisms underlying these effects are not fully understood. Large-conductance Ca2+-activated K+ (BKCa) channels are expressed broadly on smooth muscle cells and play an important role in vascular tone regulation. This study explored the mechanisms of myocyte BKCa channels and endothelial factors underlying the action of melatonin on the mesenteric arteries (MAs). Vascular contractility and patch-clamp studies were performed on myocytes of MAs from Wistar rats. Melatonin induced significant vasodilation on MAs. In the presence of Nω-nitro-l-arginine methyl ester (l-NAME), a potent endothelial oxide synthase (eNOS) inhibitor, melatonin elicited concentration-dependent relaxation, with lowered pIC50 The effect of melatonin was significantly attenuated in the presence of BKCa channel blocker iberiotoxin or MT1/MT2 receptor antagonist luzindole in both (+) l-NAME and (-) l-NAME groups. In the (+) l-NAME group, iberiotoxin caused a parallel rightward shift of the melatonin concentration-relaxation curve, with pIC50 lower than that of luzindole. Both inside-out and cell-attached patch-clamp recordings showed that melatonin significantly increased the open probability, mean open time and voltage sensitivity of BKCa channels. In a cell-attached patch-clamp configuration, the melatonin-induced enhancement of BKCa channel activity was significantly suppressed by luzindole. These findings indicate that in addition to the activation of eNOS, melatonin-induced vasorelaxation of MAs is partially attributable to its direct (passing through the cell membrane) and indirect (via MT1/MT2 receptors) activation of the BKCa channels on mesenteric arterial myocytes.
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MESH Headings
- Animals
- Gene Expression
- Ion Channel Gating/drug effects
- Large-Conductance Calcium-Activated Potassium Channel alpha Subunits/agonists
- Large-Conductance Calcium-Activated Potassium Channel alpha Subunits/genetics
- Large-Conductance Calcium-Activated Potassium Channel alpha Subunits/metabolism
- Male
- Melatonin/metabolism
- Melatonin/pharmacology
- Muscle, Smooth, Vascular/cytology
- Myocytes, Smooth Muscle/drug effects
- Myocytes, Smooth Muscle/metabolism
- Rats
- Receptor, Melatonin, MT1/genetics
- Receptor, Melatonin, MT1/metabolism
- Receptor, Melatonin, MT2/genetics
- Receptor, Melatonin, MT2/metabolism
- Vasodilation/drug effects
- Vasodilation/genetics
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Affiliation(s)
- T Zhao
- Department of Exercise PhysiologyBeijing Sport University, Beijing, China
| | - H Zhang
- Department of Exercise PhysiologyBeijing Sport University, Beijing, China
| | - C Jin
- Department of Exercise PhysiologyBeijing Sport University, Beijing, China
| | - F Qiu
- Department of Exercise PhysiologyBeijing Sport University, Beijing, China
| | - Y Wu
- Department of Exercise PhysiologyBeijing Sport University, Beijing, China
| | - L Shi
- Department of Exercise PhysiologyBeijing Sport University, Beijing, China
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Zhu DY, Song SR, Xie LJ, Qiu F, Yang J, Xiao TT, Huang M. [Identification of mutations associated with coronary artery lesion susceptibility in Kawasaki disease by targeted enrichment of genomic region sequencing technique]. Zhonghua Er Ke Za Zhi 2017; 55:529-533. [PMID: 28728263 DOI: 10.3760/cma.j.issn.0578-1310.2017.07.012] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To screen and identify the mutations in Kawasaki disease by targeted enrichment of genomic region sequencing technique and investigate susceptibility genes associated with coronary artery lesion. Method: This was a case-control study.A total of 114 patients diagnosed as Kawasaki disease treated in Shanghai Children's Hospital between December 2015 and November 2016 were studied and another 45 healthy children who were physically examined in outpatient department were enrolled as control group. Patients were divided into two groups based on the results of echocardiogram. Peripheral venous blood was obtained from patients and controls. Genomic DNA was extracted. SeqCap EZ Choice libraries were prepared by targeted enrichment of genomic region technology. Then the libraries were sequenced to identify susceptibility genes associated with coronary artery lesion in patients diagnosed as Kawasaki disease.Susceptible genes were identified by Burden test, Pearson chi-square test or Fisher's exact probability test. Result: There was statistically significant difference in TNFRSF11B(rs2073618)G>C(p.N3K)mutation and GG/GC/CC genotype between Kawasaki disease group and control group(χ(2)=15.52, P=0.00). There was statistically significant difference in TNFRSF13B(rs34562254)C>T(p.P251L)mutation(χ(2)=10.40, P=0.01)and LEFTY1(rs360057)T>G(p.D322A)mutation(χ(2)=8.505, P=0.01)between patients with coronary artery lesions and those without. Conclusion: Targeted enrichment of genomic region sequencing technology can be used to do primary screening for the susceptible genes associated with coronary artery lesions in Chinese Kawasaki patients and may provide theoretical basis for larger sample investigation of risk prediction score standard in Kawasaki disease.
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Affiliation(s)
- D Y Zhu
- Department of Cardiology, Shanghai Children's Hospital, Shanghai Jiao Tong University, Shanghai 200062, China
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Qiu F, Song DD, Guo QF, Wang QQ, Wang ZW, Liu JG, Wang YY, Qi XK. [Analysis of the clinical features of vestibular migraine with MRI changes]. Zhonghua Yi Xue Za Zhi 2017; 97:1049-1053. [PMID: 28395426 DOI: 10.3760/cma.j.issn.0376-2491.2017.14.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the clinical features of vestibular migraine with MRI changes. Methods: The clinical data of 150 patients with vestibular migraine completing MRI examination in navy general hospital from August 2008 to August 2016 were retrospectively analyzed.Clinical features of 94 (62.7%) vestibular migraine patients with MRI changes were collected and analyzed according to the medical history, clinical symptoms and signs, as well as the result of auxiliary examinations. Results: The manifestations of MRI in vestibular migraine patients were mainly multiple punctate equal T(1) and long T(2) signals or high signals on FLAIR (fluid attenuated inversion recovery) in subcortical white matter. The average age of the patients at the visit was (52±15) years old, with the male to female ratio of 1∶3.1. The occurrence of vertigo and migraine were in no particular order, with 54.3% patients presenting migraine several years before vertigo. The duration of vertigo was mostly 24 hours to 72 hours (31.9%). The visual aura (55.3%), photophobia and phonophobia (67.0%) were the most frequently associated symptoms. Conclusions: The vestibular migraine patients with MRI changes have its own specific clinical characteristics and are mainly seen in female with visual aura. The associated symptoms of vestibular migraine appear mostly during the process of vertigo. The pathogenesis of cerebral white matter hyperintensities (WMHs) is not clear.
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Affiliation(s)
- F Qiu
- Department of Neurology, the Navy General Hospital, Beijing 100048, China
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Huang J, Zhang Z, Yu X, Wang X, Qiu F. Abstract P4-02-10: Adjunct diagnosing with breast specific gamma imaging or ultrasound in symptomatic women with mammographic dense breasts: A single center retrospective and comparative analysis. Cancer Res 2017. [DOI: 10.1158/1538-7445.sabcs16-p4-02-10] [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: 11/16/2022]
Abstract
Abstract
This abstract was not presented at the symposium.
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Affiliation(s)
- J Huang
- Surgical Oncology, Hangzhou, Zhejiang, China
| | - Z Zhang
- Surgical Oncology, Hangzhou, Zhejiang, China
| | - X Yu
- Surgical Oncology, Hangzhou, Zhejiang, China
| | - X Wang
- Surgical Oncology, Hangzhou, Zhejiang, China
| | - F Qiu
- Surgical Oncology, Hangzhou, Zhejiang, China
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Wang ZW, Wu XH, Qiu F, Liu JG, Yao W, Jiang M, Wang SS, Chen ZG, Qi XK. [Prognostic factors for inability to walk independently in patients with multiple system atrophy]. Zhonghua Nei Ke Za Zhi 2017; 56:94-98. [PMID: 28162177 DOI: 10.3760/cma.j.issn.0578-1426.2017.02.003] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the prognostic factors for inability to walk independently in patients with multiple system atrophy (MSA). Methods: A total of 123 patients with clinically confirmed MSA admitted to Navy General Hospital and Dongfang Hospital affiliated to the Second Clinical Medical College of Beijing University of Chinese Medicine, from February 2013 to February 2016, were retrospectively reviewed. Clinical data and all records were collected and all subjects were followed up by a telephone call in February 2016. The second milestone of activities of daily living scale (ADL), defined as inability to walk independently, was taken as the primary outcome. Eight possible prognostic factors were investigated and the survival analysis was performed with Cox proportional hazards model regression. Results: Of all the MSA patients, 74 subjects were men and 49 were women with a sex radio of 1.51∶1(M∶F). Seventy cases were diagnosed with MSA-cerebellar type (MSA-C) and 53 with MSA-Parkinson type (MSA-P) (C∶P=1.32∶1). Mean age at the onset of first symptom was (53±8) years old. All patients had severe autonomic nervous dysfunction. At the last follow-up, 56 cases (45.5%) were unable to walk independently. The median survival time from the onset of MSA to inability to walk independently was 73 months. The age of onset ≥ 55 years (HR=1.969, 95%CI 1.095-3.542, P=0.024) and the interval time from disease onset to combined motor and autonomic involvement≤3 years (HR=2.308, 95%CI 1.158-4.600, P=0.017) were independent prognostic factors for inability to walk independently, while gender, MSA clinical subtypes, initial symptoms, alcohol intake, smoking and toxic exposure were not indicators for independent walking (P>0.05). Conclusions: The prognostic factors for inability to walk independently in patients with MSA are the age of onset ≥55 years and the interval time from disease onset to combined motor and autonomic involvement≤3 years. Although factors including gender, MSA clinical subtypes, initial symptoms, alcohol intake, smoking and toxic exposure are not the predictive factors for inability to walk independently in our MSA patients, their roles in the prognosis of MSA still need further investigation.
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Affiliation(s)
| | | | | | | | | | | | | | | | - X K Qi
- Department of Neurology, Navy General Hospital, Beijing 100048, China
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Poole JA, Qiu F, Kalil AC, Grant W, Mercer DF, Florescu DF. Impact of Immunoglobulin Therapy in Intestinal Transplant Recipients With Posttransplantation Hypogammaglobulinemia. Transplant Proc 2017; 48:479-84. [PMID: 27109982 DOI: 10.1016/j.transproceed.2015.12.064] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2015] [Accepted: 12/29/2015] [Indexed: 11/16/2022]
Abstract
BACKGROUND Severe hypogammaglobulinemia (HGG) (IgG <400 mg/dL) following intestinal transplantation is common. Although IgG replacement therapy is commonly used, clinical outcomes associated with increasing IgG levels to >400 mg/dL are not well described. METHODS Kaplan-Meier analysis was performed to estimate survival, the log-rank test to compare survival distributions between groups, and the Fisher exact test to determine the association between HGG and rejection. RESULTS A total of 23 intestinal transplant (IT) recipients with a median age of 2.3 years (range, 0.7-41 years) at the time of HGG diagnosis were included. The types of transplants were liver-small bowel (73.9%), liver-small bowel-kidney (8.7%), and small bowel only (17.4%). The 3-year survival after the diagnosis of HGG was 50.2% (95% confidence interval [CI] = 28.2%-68.7%). There was no difference in survival (P = .67) when patients were dichotomized based upon IgG level at last follow-up (IgG ≥400 mg/dL, n = 14; and IgG <400 mg/dL, n = 9). There was no also evidence of an association between survival and: total dose (P = .58), frequency (P = .11), and number of IgG doses administered (P = .8). There was no difference in survival between patients receiving (n = 12) or not receiving (n = 11) cytomegalovirus hyperimmunoglobulin (P = .10). CONCLUSIONS Improved survival rates were not found in our IT recipients with severe HGG with immunoglobulin therapy to IgG levels of ≥400 mg/dL, even when cytomegalovirus hyperimmunoglobulin was administered.
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Affiliation(s)
- J A Poole
- Pulmonary, Critical Care, Sleep and Allergy Division, Department of Medicine, University of Nebraska Medical Center, Omaha, Nebraska
| | - F Qiu
- Biostatistics Department, University of Nebraska Medical Center, Omaha, Nebraska
| | - A C Kalil
- Transplant Infectious Diseases Program, Department of Medicine, University of Nebraska Medical Center, Omaha, Nebraska
| | - W Grant
- Transplant Surgery Division, University of Nebraska Medical Center, Omaha, Nebraska
| | - D F Mercer
- Transplant Surgery Division, University of Nebraska Medical Center, Omaha, Nebraska
| | - D F Florescu
- Transplant Infectious Diseases Program, Department of Medicine, University of Nebraska Medical Center, Omaha, Nebraska; Transplant Surgery Division, University of Nebraska Medical Center, Omaha, Nebraska.
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Florescu DF, Mindru C, Keck MA, Qiu F, Kalil AC. Colistin, an Old Drug in a New Territory, Solid Organ Transplantation. Transplant Proc 2016; 48:152-7. [PMID: 26915861 DOI: 10.1016/j.transproceed.2016.01.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2015] [Accepted: 01/05/2016] [Indexed: 10/22/2022]
Abstract
BACKGROUND The clinical experience with colistin therapy for multidrug-resistant Gram-negative pathogens in solid organ transplantation is limited. METHODS Patients transplanted from January 2003 to July 2011 and treated with intravenous or nebulized colistin were included. Descriptive statistics were used to summarize patients' characteristics and Kaplan-Meier curves for survival analysis. RESULTS Fifteen patients were included: 10 adults (median age, 54.6 y; range, 32.2-79.6 y) and 5 children (median age, 3.3 y; range, 1.1-10.4 y). Eight patients had intra-abdominal infections, 3 had pneumonia, and 4 had bacteremia. The infections were diagnosed at a median of 5.9 months (range, 0.8-49.8 mo) after transplantation. Eight patients had coinfections, mainly with enteric pathogens. Pseudomonas aeruginosa was isolated in 13 cases and ESBL Klebsiella oxytoca and ESBL Escherichia coli were isolated in 1 case each. Thirteen patients received concomitant antibiotics with colistin. The median dose of intravenous colistin (13 patients) was 2.7 mg/kg/d (range, 1-4.9 mg/kg/d) and nebulized colistin (2 patients) was 241.7 mg/d (range, 150-333.3 mg/d). Clinical cure was achieved in 9 patients (60%). Four-week survival rate after infection was 86.7% (95% confidence interval, 56.4%-96.5%). There was no difference in the median creatinine clearance in adults (P = .38) or children (P = .88) before and after colistin. One patient had both neurotoxicity and nephrotoxicity, and 1 patient had neurotoxicity only. CONCLUSIONS Colistin might be used as an alternate therapy for transplant patients with multidrug-resistant Gram-negative pathogens.
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Affiliation(s)
- D F Florescu
- Infectious Diseases Division, University of Nebraska Medical Center, Omaha, Nebraska; Transplant Surgery Division, University of Nebraska Medical Center, Omaha, Nebraska.
| | - C Mindru
- Infectious Diseases Division, University of Nebraska Medical Center, Omaha, Nebraska
| | - M A Keck
- Department of Pharmaceutical and Nutrition Care, Nebraska Medical Center, Omaha, Nebraska
| | - F Qiu
- Biostatistics Department, University of Nebraska Medical Center, Omaha, Nebraska
| | - A C Kalil
- Infectious Diseases Division, University of Nebraska Medical Center, Omaha, Nebraska
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Lu HC, Ma J, Zhuang Z, Qiu F, Cheng HL, Shi JX. Exploring the regulatory role of isocitrate dehydrogenase mutant protein on glioma stem cell proliferation. Eur Rev Med Pharmacol Sci 2016; 20:3378-3384. [PMID: 27608896] [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: 06/06/2023]
Abstract
OBJECTIVE Glioma is the most lethal form of cancer that originates mostly from the brain and less frequently from the spine. Glioma is characterized by abnormal regulation of glial cell differentiation. The severity of the glioma was found to be relaxed in isocitrate dehydrogenase 1 (IDH1) mutant. The present study focused on histological discrimination and regulation of cancer stem cell between IDH1 mutant and in non-IDH1 mutant glioma tissue. PATIENTS AND METHODS Histology, immunohistochemistry and Western blotting techniques are used to analyze the glioma nature and variation in glioma stem cells that differ between IDH1 mutant and in non-IDH1 mutant glioma tissue. RESULTS The aggressive form of non-IDH1 mutant glioma shows abnormal cellular histological variation with prominent larger nucleus along with abnormal clustering of cells. The longer survival form of IDH1 mutant glioma has a control over glioma stem cell proliferation. Immunohistochemistry with stem cell markers, CD133 and EGFRvIII are used to demonstrate that the IDH1 mutant glioma shows limited dependence on cancer stem cells and it shows marked apoptotic signals in TUNEL assay to regulate abnormal cells. The non-IDH1 mutant glioma failed to regulate misbehaving cells and it promotes cancer stem cell proliferation. CONCLUSIONS Our finding supports that the IDH1 mutant glioma has a regulatory role in glioma stem cells and their survival.
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Affiliation(s)
- H-C Lu
- Department of Neurosurgery, Jingling Hospital, Medical School of Nanjing University, Nanjing, China.
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Zhang Z, Wang RF, Zhang J, Li HS, Zhang J, Qiu F, Yang J, Wang C, Yang Y. Direct growth of Ge quantum dots on a graphene/SiO2/Si structure using ion beam sputtering deposition. Nanotechnology 2016; 27:305601. [PMID: 27302495 DOI: 10.1088/0957-4484/27/30/305601] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The growth of Ge quantum dots (QDs) using the ion beam sputtering deposition technique has been successfully conducted directly on single-layer graphene supported by SiO2/Si substrate. The results show that the morphology and size of Ge QDs on graphene can be modulated by tuning the Ge coverage. Charge transfer behavior, i.e. doping effect in graphene has been demonstrated at the interface of Ge/graphene. Compared with that of traditional Ge dots grown on Si substrate, the positions of both corresponding photoluminescence (PL) peaks of Ge QDs/graphene hybrid structure undergo a large red-shift, which can probably be attributed to the lack of atomic intermixing and the existence of surface states in this hybrid material. According to first-principles calculations, the Ge growth on the graphene should follow the so-called Volmer-Weber mode instead of the Stranski-Krastanow one which is observed generally in the traditional Ge QDs/Si system. The calculations also suggest that the interaction between Ge and graphene layer can be enhanced with the decrease of the Ge coverage. Our results may supply a prototype for fabricating novel optoelectronic devices based on a QDs/graphene hybrid nanostructure.
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Affiliation(s)
- Z Zhang
- Institute of Optoelectronic Information Material, School of Materials Science and Engineering, Yunnan University, Kunming 650091, People's Republic of China. Yunnan Key Laboratory for the Micro/Nano Materials & Technology, Yunnan University, Kunming 650091, People's Republic of China
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Xie B, Gu P, Wang W, Dong C, Zhang L, Zhang J, Liu H, Qiu F, Han R, Zhang Z, Yan B. Therapeutic effects of human umbilical cord mesenchymal stem cells transplantation on hypoxic ischemic encephalopathy. Am J Transl Res 2016; 8:3241-3250. [PMID: 27508046 PMCID: PMC4969462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Accepted: 05/19/2016] [Indexed: 06/06/2023]
Abstract
OBJECTIVE Human umbilical cord mesenchymal stem cells (hUC-MSCs) hold substantial promise for the treatment of ischemic neurological disease, but few clinical data are currently available about its therapeutic effects in hypoxic ischemic encephalopathy (HIE). This study is to evaluate the effects of hUC-MSCs transplantation on patients with HIE. Methods A total 22 patients with HIEwere randomly divided into hUC-MSCs transplantation group (n = 12) and control group (n = 10). After isolation, hUC-MSCs were cultured for 3 to 5 passages in vitro and then intravenously administered to HIE patients in the transplantation group, while the control group received routine treatment only. The outcomes of HIE patients were evaluated at designated time points by clinical assessment scales, including NIHSS, Barthel Index, MMSE, HAMA24, HAMD14 and UPDRS. RESULTS hUC-MSCs were identified by morphological analysis and flow cytometry assays before clinic transplantation. No significant differences of demographic characteristics were observed between the two groups of subjects. Compared to the control group, hUC-MSCs transplantation markedly improved the outcomes of HIE patients leading to better recovery of neurological function, cognition ability, emotional reaction and extrapyramidal function. No significant adverse effects were found in subjects with hUC-MSCs transplantation during a 180-day follow-up period. CONCLUSION These data suggest that hUC-MSCs therapy markedly improves the outcomes of patients with HIE, which is potential for the routine treatment of ischemic neurological disease.
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Affiliation(s)
- Bingchuan Xie
- Department of Gerontology, The First Hospital of Hebei Medical UniversityShijiazhuang 050031, China
- Department of Neurology, The First Hospital of Hebei Medical UniversityShijiazhuang 050031, China
| | - Ping Gu
- Department of Gerontology, The First Hospital of Hebei Medical UniversityShijiazhuang 050031, China
- Department of Neurology, The First Hospital of Hebei Medical UniversityShijiazhuang 050031, China
- Brain Aging and Cognitive, Neuroscience Laboratory of Hebei ProvinceShijiazhuang 050031, China
| | - Wenting Wang
- Department of Gerontology, The First Hospital of Hebei Medical UniversityShijiazhuang 050031, China
- Department of Neurology, The First Hospital of Hebei Medical UniversityShijiazhuang 050031, China
| | - Ci Dong
- Department of Gerontology, The First Hospital of Hebei Medical UniversityShijiazhuang 050031, China
- Department of Neurology, The First Hospital of Hebei Medical UniversityShijiazhuang 050031, China
| | - Lina Zhang
- Department of Gerontology, The First Hospital of Hebei Medical UniversityShijiazhuang 050031, China
- Department of Neurology, The First Hospital of Hebei Medical UniversityShijiazhuang 050031, China
| | - Jun Zhang
- The Lab of Cell Therapy, The First Hospital of Hebei Medical UniversityShijiazhuang 050031, China
| | - Huimiao Liu
- Department of Gerontology, The First Hospital of Hebei Medical UniversityShijiazhuang 050031, China
- Department of Neurology, The First Hospital of Hebei Medical UniversityShijiazhuang 050031, China
| | - Fucheng Qiu
- Department of Gerontology, The First Hospital of Hebei Medical UniversityShijiazhuang 050031, China
- Department of Neurology, The First Hospital of Hebei Medical UniversityShijiazhuang 050031, China
| | - Rui Han
- Department of Gerontology, The First Hospital of Hebei Medical UniversityShijiazhuang 050031, China
- Department of Neurology, The First Hospital of Hebei Medical UniversityShijiazhuang 050031, China
| | - Zhenqing Zhang
- Department of Gerontology, The First Hospital of Hebei Medical UniversityShijiazhuang 050031, China
- Department of Neurology, The First Hospital of Hebei Medical UniversityShijiazhuang 050031, China
| | - Baoyong Yan
- Brain Aging and Cognitive, Neuroscience Laboratory of Hebei ProvinceShijiazhuang 050031, China
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Yu X, Zhang Z, Wang Z, Wu P, Qiu F, Huang J. Prognostic and predictive value of tumor-infiltrating lymphocytes in breast cancer: a systematic review and meta-analysis. Clin Transl Oncol 2016; 18:497-506. [PMID: 26459255 PMCID: PMC4823351 DOI: 10.1007/s12094-015-1391-y] [Citation(s) in RCA: 79] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Accepted: 08/17/2015] [Indexed: 12/30/2022]
Abstract
BACKGROUND Breast cancer is the most common invasive cancer to affect women in the world. Studies showed tumor-infiltrating lymphocytes can exhibit both beneficial and harmful effects on the biology and clinical outcome of breast cancer, the conclusion still remains incomplete. Here, we conducted a meta-analysis to evaluate the relationship between tumor-infiltrating lymphocytes and breast cancer. METHODS A comprehensive search strategy was used to search relevant literatures in PubMed and the ISI Web of Science. The correlation among TILs and breast cancer clinicopathological features and prognosis was analyzed by using Review Manager 5.3 and Stata 12.0. RESULT Seventeen eligible studies consisting of 12,968 participants were included. We found that higher value of tumor-infiltrating lymphocytes had no relationship with breast cancer clinicopathological variables. Interestingly, it was correlated with response to neoadjuvant chemotherapy in majority (pooled RR 2.43, 95% CI 1.99-2.97). Moreover, higher value of total tumor-infiltrating lymphocytes (both intraepithelial and stromal) was associated with better prognosis (pooled HR 0.88, 95% CI 0.83-0.94), whereas some subtypes predicted a worse prognosis. CONCLUSION This meta-analysis indicated that high value of total TILs is not associated with breast cancer clinicopathological features, but can predict a favorable outcome for neoadjuvant chemotherapy in majority except for hormone receptor (-) subtype. And higher total TILs (both intraepithelial TILs and stromal TILs) may be the potential better prognostic indicators, while some subtypes like PD-1(+) TILs and Foxp3(+) TILs show a worse prognosis.
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Affiliation(s)
- X. Yu
- />Cancer Institute (Key Laboratory of Cancer Prevention and Intervention, National Ministry of Education, Provincial Key Laboratory of Molecular Biology in Medical Sciences), The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310009 China
- />Department of Oncology, Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310009 China
| | - Z. Zhang
- />Cancer Institute (Key Laboratory of Cancer Prevention and Intervention, National Ministry of Education, Provincial Key Laboratory of Molecular Biology in Medical Sciences), The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310009 China
- />Department of Oncology, Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310009 China
- />Department of Gynecology, Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310009 China
| | - Z. Wang
- />Cancer Institute (Key Laboratory of Cancer Prevention and Intervention, National Ministry of Education, Provincial Key Laboratory of Molecular Biology in Medical Sciences), The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310009 China
| | - P. Wu
- />Cancer Institute (Key Laboratory of Cancer Prevention and Intervention, National Ministry of Education, Provincial Key Laboratory of Molecular Biology in Medical Sciences), The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310009 China
| | - F. Qiu
- />Cancer Institute (Key Laboratory of Cancer Prevention and Intervention, National Ministry of Education, Provincial Key Laboratory of Molecular Biology in Medical Sciences), The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310009 China
- />Department of Oncology, Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310009 China
| | - J. Huang
- />Cancer Institute (Key Laboratory of Cancer Prevention and Intervention, National Ministry of Education, Provincial Key Laboratory of Molecular Biology in Medical Sciences), The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310009 China
- />Department of Oncology, Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310009 China
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Abstract
OBJECTIVE Astragalus polysaccharides (APS) are active constituents of Astragalus membranaceus. In this study, we aimed to investigate the effects of APS on memory impairment in a diabetic rat model and their mechanisms. METHODS A diabetic model was established in 50 male Wistar rats with streptozotocin intra-peritoneal injection. A blood glucose level higher than 16.7 mmol/L obtained 72 hours after the injection was regarded as a successful diabetic model. The modeled rats were divided into model group, high, medium, and low doses of APS, and piracetam groups (positive control). A group of ten rats without streptozotocin-induced diabetes were used as a normal control. After respective consecutive 8-week treatments, the levels of blood fasting plasma glucose, insulin, hemoglobin A1c, memory performance, hippocampal malondialdehyde, and superoxide dismutase were determined. RESULTS After the 8-week APS treatment, serum fasting plasma glucose, hemoglobin A1c, and insulin levels were decreased compared with those of the model group (P<0.05). Importantly, memory impairment in the diabetic model was reversed by APS treatments. In addition, hippocampal malondialdehyde concentration was lowered, whereas that of superoxide dismutase was higher after APS treatments. CONCLUSION APS are important active components responsible for memory improvement in rats with streptozotocin-induced diabetes. The potential mechanism of action is associated with the effects of APS on glucose and lipid metabolism, and antioxidative and insulin resistance. APS are constituents of A. membranaceus that are potential candidate therapeutic agents for the treatment of memory deficit in diabetes.
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Affiliation(s)
- Changping Dun
- Department of Neurology, the First Hospital of Hebei Medical University
| | - Junqian Liu
- Department of Neurology, the First Hospital of Hebei Medical University
| | - Fucheng Qiu
- Department of Neurology, the First Hospital of Hebei Medical University
| | - Xueda Wu
- Department of Cardiac Surgery, the Second Hospital of Hebei Medical University
| | - Yakun Wang
- Department of Endocrinology, the Fourth Hospital of Hebei Medical University, Shijiazhuang
| | - Yongyan Zhao
- Department of Nursing, Maternal and Child Health Hospital of Tangshan City, Tangshan, People's Republic of China
| | - Ping Gu
- Department of Neurology, the First Hospital of Hebei Medical University
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