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Huang YN, Liu DY, Mei HY, Han L, Yang HP. Role of Lanthanides and Bilayer Fe 2As 2 in the Electronic Properties of Rb Ln2Fe 4As 4O 2 ( Ln = Gd, Tb, and Dy) Superconductors. Materials (Basel) 2023; 16:ma16114123. [PMID: 37297257 DOI: 10.3390/ma16114123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 05/28/2023] [Accepted: 05/29/2023] [Indexed: 06/12/2023]
Abstract
The superconducting transition temperatures (Tc) of RbGd2Fe4As4O2, RbTb2Fe4As4O2, and RbDy2Fe4As4O2 are 35 K, 34.7 K, and 34.3 K without doping, respectively. For the first time, we have studied the high-temperature nonmagnetic state and the low-temperature magnetic ground state of 12442 materials, RbTb2Fe4As4O2 and RbDy2Fe4As4O2, using first principles calculations and comparing them with RbGd2Fe4As4O2. We also performed a detailed study of the effects of lanthanides and bilayer Fe2As2. We predict that the ground state of RbLn2Fe4As4O2 (Ln = Gd, Tb, and Dy) is spin-density-wave-type, in-plane, striped antiferromagnets, and the magnetic moment around each Fe atom is about 2 μB. We also found that the structural differences caused by the simple ionic radius have little effect on the properties of these three materials. Different lanthanide elements themselves play a major role in the electronic properties of the materials. It can be confirmed that the effect of Gd on RbLn2Fe4As4O2 is indeed different from that of Tb and Dy, and the presence of Gd is more conducive to interlayer electron transfer. This means that Gd can transfer more electrons from the GdO layer to the FeAs layer compared to Tb and Dy. Therefore, RbGd2Fe4As4O2 has a stronger internal coupling strength of the bilayer Fe2As2 layer. This can explain why the Tc of RbGd2Fe4As4O2 is slightly higher than that of RbTb2Fe4As4O2 and RbDy2Fe4As4O2.
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Affiliation(s)
- Yi-Na Huang
- Department of Physics, School of Science, Zhejiang University of Science and Technology, Hangzhou 310023, China
| | - Da-Yong Liu
- Department of Physics, School of Sciences, Nantong University, Nantong 226019, China
| | - Hong-Ying Mei
- Henan Provincial Key Laboratory of Smart Lighting, School of Information Engineering, Huanghuai University, Zhumadian 463000, China
| | - Li Han
- Qilu Institute of Technology, School of Chemical and Biological Engineering, Jinan 250200, China
| | - Huan-Ping Yang
- Department of Physics, School of Science, Zhejiang University of Science and Technology, Hangzhou 310023, China
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Huang YN, Yu XL, Liu DY, Han MM. Role of Doping Effect and Chemical Pressure Effect Introduced by Alkali Metal Substitution on 1144 Iron-Based Superconductors. Materials (Basel) 2023; 16:ma16093343. [PMID: 37176225 PMCID: PMC10179702 DOI: 10.3390/ma16093343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2023] [Revised: 04/14/2023] [Accepted: 04/22/2023] [Indexed: 05/15/2023]
Abstract
CaAFe4As4 with A = K, Rb, and Cs are close to the doped 122 system, and the parent material can reach a superconducting transition temperature of 31-36 K without doping. To study the role of alkali metals, we investigated the induced hole doping and chemical pressure effects as a result of the introduction of alkali metals using density-functional-based methods. These two effects can affect the superconducting transition temperature by changing the number of electrons and the structure of the FeAs conductive layer, respectively. Our study shows that the dxz and dyz orbitals, which are degenerate in CaFe2As2, become nondegenerate in CaAFe4As4 due to two nonequivalent arsenic atoms (As1 and As2). The unusual oblate ellipsoid hole pocket at Γ point in CaAFe4As4 results from a divalent cation Ca2+ replaced by a monovalent cation A+. It shows one of the main differences in fermiology compared to a particular form of CaFe2As2 with reduced 1144 symmetry, due to the enhancement of As2-Fe hybridization. The unusual band appears in CaFe2As2 (1144) and gradually disappears in the change of K to Cs. Further analysis shows that this band is contributed by As1 and has strong dispersion perpendicular to the FeAs layer, suggesting that it is related to the peculiar van Hove singularity below the Fermi level. In addition, various aspects of CaFe2As2 (1144) and CaAFe4As4 in the ground state are discussed in terms of the influence of hole doping and chemical pressure.
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Affiliation(s)
- Yi-Na Huang
- Department of Physics, School of Science, Zhejiang University of Science and Technology, Hangzhou 310023, China
| | - Xiang-Long Yu
- Shenzhen Institute for Quantum Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China
- International Quantum Academy, Shenzhen 518048, China
- Guangdong Provincial Key Laboratory of Quantum Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China
| | - Da-Yong Liu
- Department of Physics, School of Sciences, Nantong University, Nantong 226019, China
| | - Miao-Miao Han
- School of Science, Huzhou University, Huzhou 313000, China
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Huang YN, Yan FH, Wang XY, Chen XL, Chong HY, Su WL, Chen YR, Han L, Ma YX. Prevalence and Risk Factors of Frailty in Stroke Patients: A Meta-Analysis and Systematic Review. J Nutr Health Aging 2023; 27:96-102. [PMID: 36806864 DOI: 10.1007/s12603-023-1879-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
OBJECTIVES Summarize the existing evidence regarding the prevalence and risk factors of frailty in stroke patients. DESIGN A meta-analysis and systematic review. PARTICIPANTS Stroke patients in hospitals or communities. METHODS We undertook a systematic review and meta-analysis using articles available in 8 databases, including PubMed, The Cochrane Library, Web of Science, Embase, Chinese Biomedical Database (CBM), China National Knowledge Infrastructure Database (CNKI), Wanfang Database, and Weipu Database (VIP) from January 1990 to April 2022. Studies were quality rated using the Newcastle-Ottawa Scale and Agency for Healthcare Research and Quality tool. RESULTS A total of 24 studies involving 30,423 participants were identified. The prevalence of frailty and pre-frailty in stroke patients was 27% (95%CI: 0.23-0.31) and 47.9% (95%CI: 0.43-0.53). Female gender (OR = 1.76, 95%CI: 1.63-1.91), advanced age (MD = 6.73, 95%CI: 3.55-9.91), diabetes (OR = 1.34, 95%CI: 1.06-1.69), hyperlipidemia (OR = 1.46, 95%CI: 1.04-2.04), atrial fibrillation (OR = 1.36, 95%CI: 1.01-1.82), National Institutes of Stroke Scale (NIHSS) admission scores (MD = 2.27, 95%CI: 1.72-2.81) were risk factors of frailty in stroke patients. CONCLUSIONS Frailty was more prevalent in stroke patients. Female gender, advanced age, diabetes, hyperlipidemia, atrial fibrillation, and National Institutes of Stroke Scale (NIHSS) admission scores were identified as risk factors for frailty in stroke patients. In the future, medical staff should pay attention to the early screening of frailty in high-risk groups and provide information on its prevention.
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Affiliation(s)
- Y N Huang
- Yuxia Ma, Lin Han, Lanzhou University, China ,
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Chen HS, Yang Y, Ni J, Chen GF, Ji Y, Yi F, Zhang ZB, Wu J, Cai XL, Shao B, Wang JF, Liu YF, Geng DQ, Qu XH, Li XH, Wei Y, Han SG, Zhu RX, Ding JP, Lyu H, Huang YN, Huang YH, Xiao B, Gong T, Yu XF, Cui LY. [Effects of cinepazide maleate injection on blood pressure in patients with acute ischemic stroke and hypertension]. Zhonghua Nei Ke Za Zhi 2022; 61:916-920. [PMID: 35922216 DOI: 10.3760/cma.j.cn112138-20210822-00574] [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: 06/15/2023]
Abstract
Objective: To investigate the blood pressure change in patients with acute ischemic stroke (AIS) and hypertension treated with cinepazide maleate injection. Methods: This was a subgroup analysis of post-marketing clinical confirmation study of cinepazide maleate injection for acute ischemic stroke: a randomized, double-blinded, multicenter, placebo-parallel controlled trial, which conducted in China from August 2016 to February 2019. Eligible patients fulfilled the inclusive criteria of acute anterior circulation ischemic stroke with National Institutes of Health Stroke Scale (NIHSS) scores of 7-25. The primary endpoints were mean blood pressure of AIS patients treated with cinepazide maleate or control, which were assessed during the treatment period (14 days), and the proportion of the patients with normal blood pressure was analyzed after the treatment period. Furthermore, a subgroup analysis was performed to investigate a possible effect of the history of hypertension on outcomes. Results: This analysis included 809 patients with hypertension. There was no significant difference in patients blood pressure and the proportion of patients with normal blood pressure (60.5% vs. 59.0%,P>0.05) between cinepazide maleate group and control group. Conclusion: Administration of cinepazide maleate injection does not affect the management of clinical blood pressure in patients with AIS.
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Affiliation(s)
- H S Chen
- Department of Neurology, General Hospital of Northern Theater Command, Shenyang 110016, China
| | - Y Yang
- Department of Neurology, the First Bethune Hospital of Jilin University, Changchun 130021, China
| | - J Ni
- Department of Neurology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
| | - G F Chen
- Department of Neurology, Xuzhou Central Hospital, Xuzhou 221009, China
| | - Y Ji
- Department of Neurology, Tianjin Huanhu Hospital, Tianjin 300350, China
| | - F Yi
- Department of Neurology, JiangXi PingXiang People's Hospital, Pingxiang 337055, China
| | - Z B Zhang
- Department of Neurology, the Fourth Affiliated Hospital of Harbin Medical University, Harbin 150001, China
| | - J Wu
- Department of Neurology, the Second Affiliated Hospital of Nanjing Medical University, Nanjing 210011, China
| | - X L Cai
- Department of Neurology, Lishui Municipal Central Hospital, Lishui 323000, China
| | - B Shao
- Department of Neurology, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China
| | - J F Wang
- Department of Neurology, Dalian Municipal Central Hospital, Dalian 116033, China
| | - Y F Liu
- Department of Neurology, Huangshi Central Hospital, Huangshi 435000, China
| | - D Q Geng
- Department of Neurology, the Affiliated Hospital of Xuzhou Medical University, Xuzhou 221002, China
| | - X H Qu
- Department of Neurology, Jiangxi Provincial People's Hospital, Nanchang 330006, China
| | - X H Li
- Department of Neurology, Jinan Central Hospital, Jinan 250013, China
| | - Y Wei
- Department of Neurology, Hengshui People's Hospital (Harrison International Peace Hospital), Hengshui 053000, China
| | - S G Han
- Department of Neurology, Meihekou City Central Hospital, Meihekou 135014, China
| | - R X Zhu
- Department of Neurology, Inner Mongolia People's Hospital, Hohhot 010017, China
| | - J P Ding
- Department of Neurology, Xuanwu Hospital Capital Medical University, Beijing 100053, China
| | - H Lyu
- Department of Neurology, Shaanxi Provincial People's Hospital, Xi'an 710068, China
| | - Y N Huang
- Department of Neurology, Peking University First Hospital, Beijing 100034, China
| | - Y H Huang
- Department of Neurology, the Seventh Medical Center of the Chinese PLA General Hospital, Beijing 100700, China
| | - B Xiao
- Department of Neurology, Xiangya Hospital Central South University, Changsha 410008, China
| | - T Gong
- Department of Neurology, Beijing Hospital, Beijing 100730, China
| | - X F Yu
- Department of Neurology, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - L Y Cui
- Department of Neurology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
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Tang HP, Gong HR, Zhang XL, Huang YN, Wu CY, Tang ZQ, Chen L, Wang M. Sodium salicylate enhances neural excitation via reducing GABAergic transmission in the dentate gyrus area of rat hippocampus in vivo. Hippocampus 2021; 31:512-521. [PMID: 33580728 DOI: 10.1002/hipo.23312] [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: 02/13/2020] [Revised: 12/31/2020] [Accepted: 01/23/2021] [Indexed: 11/10/2022]
Abstract
Sodium salicylate, one of the non-steroidal anti-inflammatory drugs, is widely prescribed in the clinic, but a high dose of usage can cause hyperactivity in the central nervous system, including the hippocampus. At present, the neural mechanism underlying the induced hyperactivity is not fully understood, in particular, in the hippocampus under an in vivo condition. In this study, we found that systemic administration of sodium salicylate increased the field excitatory postsynaptic potential slope and the population spike amplitude in a dose-dependent manner in the hippocampal dentate gyrus area of rats with in vivo field potential extracellular recordings, which indicates that sodium salicylate enhances basal synaptic transmission and neural excitation. In the presence of picrotoxin, a GABA-A receptor antagonist, sodium salicylate failed to increase the initial slope of the field excitatory postsynaptic potential and the amplitude of the population spike in vivo. To further explore how sodium salicylate enhances the neural excitation, we made whole-cell patch-clamp recordings from hippocampal slices. We found that perfusion of the slice with sodium salicylate decreased electrically evoked GABA receptor-mediated currents, increased paired-pulse ratio, and lowered frequency and amplitude of miniature inhibitory postsynaptic currents. Together, these results demonstrate that sodium salicylate enhances the neural excitation through suppressing GABAergic synaptic transmission in presynaptic and postsynaptic mechanisms in the hippocampal dentate gyrus area. Our findings may help understand the side effects caused by sodium salicylate in the central nervous system.
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Affiliation(s)
- Hui-Ping Tang
- Hefei National Laboratory for Physical Sciences at the Microscale and School of Life Sciences, University of Science and Technology of China, Hefei, China.,Auditory Research Laboratory, School of Life Sciences, University of Science and Technology of China, Hefei, China
| | - Hua-Rui Gong
- Hefei National Laboratory for Physical Sciences at the Microscale and School of Life Sciences, University of Science and Technology of China, Hefei, China.,Auditory Research Laboratory, School of Life Sciences, University of Science and Technology of China, Hefei, China
| | - Xu-Lai Zhang
- Department of Geriatrics, Anhui Mental Health Center, Hefei, China
| | - Yi-Na Huang
- Hefei National Laboratory for Physical Sciences at the Microscale and School of Life Sciences, University of Science and Technology of China, Hefei, China.,Auditory Research Laboratory, School of Life Sciences, University of Science and Technology of China, Hefei, China
| | - Chuan-Yun Wu
- College of Traditional Chinese Medicine, Anhui University of Chinese Medicine, Hefei, China
| | - Zheng-Quan Tang
- School of Life Sciences, Anhui University, Hefei, China.,Key Laboratory of Human Microenvironment and Precision Medicine of Anhui Higher Education Institutes, Anhui University, Hefei, China
| | - Lin Chen
- Hefei National Laboratory for Physical Sciences at the Microscale and School of Life Sciences, University of Science and Technology of China, Hefei, China.,Auditory Research Laboratory, School of Life Sciences, University of Science and Technology of China, Hefei, China
| | - Ming Wang
- Hefei National Laboratory for Physical Sciences at the Microscale and School of Life Sciences, University of Science and Technology of China, Hefei, China.,Auditory Research Laboratory, School of Life Sciences, University of Science and Technology of China, Hefei, China
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Shu FQ, Lu YG, Tang HP, Ye ZY, Huang YN, Wang M, Tang ZQ, Chen L. Resveratrol noncompetitively inhibits glycine receptor-mediated currents in neurons of rat central auditory neurons. Brain Res Bull 2021; 169:18-24. [PMID: 33400956 DOI: 10.1016/j.brainresbull.2020.12.021] [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: 08/26/2020] [Revised: 12/21/2020] [Accepted: 12/30/2020] [Indexed: 01/17/2023]
Abstract
Resveratrol, a naturally occurring stilbene found in red wine, is known to modulate the activity of several types of ion channels and membrane receptors, including Ca2+, K+, and Na+ ion channels. However, little is known about the effects of resveratrol on some important receptors, such as glycine receptors and GABAA receptors, in the central nervous system (CNS). In the present study, the effects of resveratrol on glycine receptor or GABAA receptor-mediated currents in cultured rat inferior colliculus (IC) and auditory cortex (AC) neurons were studied using whole-cell voltage-clamp recordings. Resveratrol itself did not evoke any currents in IC neurons but it reversibly decreased the amplitude of glycine-induced current (IGly) in a concentration-dependent manner. Resveratrol did not change the reversal potential of IGly but it shifted the concentration-response relationship to the right without changing the Hill coefficient and with decreasing the maximum response of IGly. Interestingly, resveratrol inhibited the amplitude of IGly but not that of GABA-induced current (IGABA) in AC neurons. More importantly, resveratrol inhibited GlyR-mediated but not GABAAR-mediated inhibitory postsynaptic currents in IC neurons using brain slice recordings. Together, these results demonstrate that resveratrol noncompetitively inhibits IGly in auditory neurons by decreasing the affinity of glycine to its receptor. These findings suggest that the native glycine receptors but not GABAA receptors in central neurons are targets of resveratrol during clinical administrations.
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Affiliation(s)
- Fang-Qi Shu
- School of Life Sciences, Anhui University, Hefei, 230601, China; Key Laboratory of Human Microenvironment and Precision Medicine of Anhui Higher Education Institutes, Anhui University, Hefei, 230601, China
| | - Yun-Gang Lu
- CAS Key Laboratory of Brain Function and Diseases, School of Life Sciences, University of Science and Technology of China, Hefei, 230027, China; Auditory Research Laboratory, University of Science and Technology of China, Hefei, 230027, China
| | - Hui-Ping Tang
- CAS Key Laboratory of Brain Function and Diseases, School of Life Sciences, University of Science and Technology of China, Hefei, 230027, China; Auditory Research Laboratory, University of Science and Technology of China, Hefei, 230027, China
| | - Zeng-You Ye
- CAS Key Laboratory of Brain Function and Diseases, School of Life Sciences, University of Science and Technology of China, Hefei, 230027, China
| | - Yi-Na Huang
- CAS Key Laboratory of Brain Function and Diseases, School of Life Sciences, University of Science and Technology of China, Hefei, 230027, China; Auditory Research Laboratory, University of Science and Technology of China, Hefei, 230027, China
| | - Ming Wang
- CAS Key Laboratory of Brain Function and Diseases, School of Life Sciences, University of Science and Technology of China, Hefei, 230027, China; Auditory Research Laboratory, University of Science and Technology of China, Hefei, 230027, China
| | - Zheng-Quan Tang
- School of Life Sciences, Anhui University, Hefei, 230601, China; Key Laboratory of Human Microenvironment and Precision Medicine of Anhui Higher Education Institutes, Anhui University, Hefei, 230601, China.
| | - Lin Chen
- CAS Key Laboratory of Brain Function and Diseases, School of Life Sciences, University of Science and Technology of China, Hefei, 230027, China; Auditory Research Laboratory, University of Science and Technology of China, Hefei, 230027, China.
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Tang ZQ, Lu YG, Huang YN, Chen L. Cross-talk pattern between GABA A- and glycine-receptors in CNS neurons is shaped by their relative expression levels. Brain Res 2020; 1748:147071. [PMID: 32827550 DOI: 10.1016/j.brainres.2020.147071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 08/03/2020] [Accepted: 08/17/2020] [Indexed: 11/17/2022]
Abstract
GABAA receptors (GABAARs) and glycine receptors (GlyRs) are two principal inhibitory chloride ion channels in the central nervous system. The two receptors do not function independently but cross-talk to each other, i.e., the activation of one receptor would inhibit the other. This cross-talk is present in different patterns across various regions in the central nervous system; however, the factor that determines these patterns is not understood. Here, we show that the pattern of cross-talk between the two receptors is shaped by their relative expression level in a neuron: a higher expression level correlates with louder talk. In line with a tendency of decrease in expression level of GlyRs and increase in expression level of GABAARs from the spinal cord, the brainstem to the neocortex, GlyRs talked much louder (i.e. produced greater inhibition) than GABAARs (one-way pattern) in spinal cord neurons, about equally loud as GABAARs (symmetric pattern) in inferior colliculus neurons and less loud (i.e. less inhibition) than GABAARs (asymmetric pattern) in auditory cortex neurons. Overexpression of GlyRs in inferior colliculus neurons produced an asymmetric pattern that should otherwise have been observed in spinal cord neurons. These expression level-dependent patterns of cross-talk between the two receptors may suggest how the central nervous system uses an alternative mechanism to maintain a delicate level of inhibition through adjusting the proportion of the two receptors in a neuron along its pathway.
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Affiliation(s)
- Zheng-Quan Tang
- School of Life Sciences, Anhui University, Hefei 230601, China; Key Laboratory of Human Microenvironment and Precision Medicine of Anhui Higher Education Institutes, Anhui University, Hefei 230601, China.
| | - Yun-Gang Lu
- CAS Key Laboratory of Brain Function and Diseases, School of Life Sciences, University of Science and Technology of China, Hefei 230027, China; Auditory Research Laboratory, School of Life Sciences, University of Science and Technology of China, Hefei 230027, China
| | - Yi-Na Huang
- CAS Key Laboratory of Brain Function and Diseases, School of Life Sciences, University of Science and Technology of China, Hefei 230027, China; Auditory Research Laboratory, School of Life Sciences, University of Science and Technology of China, Hefei 230027, China
| | - Lin Chen
- CAS Key Laboratory of Brain Function and Diseases, School of Life Sciences, University of Science and Technology of China, Hefei 230027, China; Auditory Research Laboratory, School of Life Sciences, University of Science and Technology of China, Hefei 230027, China.
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Zheng DX, Kang XN, Wang YX, Huang YN, Pang CF, Chen YX, Kuang ZL, Peng Y. Periodontal disease and emotional disorders: A meta-analysis. J Clin Periodontol 2020; 48:180-204. [PMID: 33103263 DOI: 10.1111/jcpe.13395] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Revised: 09/08/2020] [Accepted: 10/21/2020] [Indexed: 12/16/2022]
Abstract
OBJECTIVE The objective of this study was to evaluate the relationship of periodontal disease with depression and anxiety via a systematic review and meta-analysis. METHOD We systematically searched the EMBASE, PubMed, Web of Science, PsycINFO, and SinoMed databases (until August 4, 2019) with language restricted to English and Chinese. Case-control, cross-sectional, and cohort studies that calculated the risk ratio (RR), odds ratio (OR)/prevalence OR (POR), and hazard ratio (HR) of depression/anxiety with periodontal disease or the OR/POR/RR/HR of periodontal disease caused by depression/anxiety were included. Observational studies that reported the depression/anxiety scale score of patients with periodontal disease and healthy periodontal subjects aged ≥14 years were also included. We used the standard format to extract the following information from each included study: author/s, survey year, study design, age of participants, periodontal disease definition, depression/anxiety measurement, and summary of results. The Newcastle-Ottawa scale was used to ascertain the quality of the included citations. RESULTS After screening, 40 studies were included. A meta-analysis of the case-control studies showed that periodontal disease was positively associated with depression (OR = 1.70, 95% confidence interval [CI] = 1.01-2.83). A meta-analysis of 12 studies showed that periodontal disease was significantly correlated with anxiety (OR = 1.36, 95% CI = 1.11-1.66). A meta-analysis of 18 studies showed that subjects with periodontal disease had higher depression scale score (standardized mean difference [SMD] = 1.05, 95% CI = 0.68-1.41) and anxiety scale score (SMD = 0.70, 95% CI = 0.44-0.96). CONCLUSION Periodontal disease is associated with emotional disorders. However, the high degree of heterogeneity among studies should be considered. More high-quality prospective studies are required to confirm the relationship.
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Affiliation(s)
- De-Xiu Zheng
- Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-Sen University, Guangzhou, China
| | - Xiao-Ning Kang
- Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-Sen University, Guangzhou, China
| | - Yi-Xi Wang
- Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-Sen University, Guangzhou, China
| | - Yi-Na Huang
- Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-Sen University, Guangzhou, China
| | - Chun-Feng Pang
- Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-Sen University, Guangzhou, China
| | - Yu-Xuan Chen
- Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-Sen University, Guangzhou, China
| | - Zhi-Li Kuang
- The Department of Stomatology, Third Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Yun Peng
- Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-Sen University, Guangzhou, China
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Xing KY, Peng J, Shan S, Liu DF, Huang YN, Lai WH. Green Enzyme-Linked Immunosorbent Assay Based on the Single-Stranded Binding Protein-Assisted Aptamer for the Detection of Mycotoxin. Anal Chem 2020; 92:8422-8426. [PMID: 32403920 DOI: 10.1021/acs.analchem.0c01073] [Citation(s) in RCA: 53] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
In this work, a green enzyme-linked immunosorbent assay (ELISA) based on the single-stranded binding protein (SSB)-assisted aptamer was designed for biosensing applications. Combined with the biotin-streptavidin (SA) system and the high catalytic activity of horseradish peroxidase (HRP), this SSB-assisted aptamer sensor was applied for the detection of aflatoxin B1, ochratoxin A, and zearalenone. In this novel ELISA, mycotoxin-protein conjugations were replaced by SSB to avoid the hazard of mycotoxin, whereas antibodies were replaced by aptamer to avoid the complex and tedious preparation of antibodies. In the absence of target mycotoxins, SSB can bind the aptamer-biotin specifically. Detection was performed using the strong combination of biotin and SA after adding SA-HRP and substrate/chromogen solution, thereby resulting in a strong yellow color signal. In the presence of target mycotoxins, the aptamer-biotin cannot bind to the SSB, thereby leading to a weak yellow color signal. Under optimal conditions, the designed method was successfully applied for the determination of real sample and exhibited high specificity and low limits of detection in corn (112 ng L-1 for aflatoxin B1, 319 ng L-1 for ochratoxin A, and 377 ng L-1 for zearalenone). The green ELISA may also be extended to the detection of other biohazardous targets by changing the aptamer.
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Affiliation(s)
- Ke-Yu Xing
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, China
| | - Juan Peng
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, China
| | - Shan Shan
- College of life sciences, Jiangxi Normal University, Nanchang, 330022, China
| | - Dao-Feng Liu
- Jiangxi Province Center for Disease Control and Prevention, Nanchang, 330029, China
| | - Yi-Na Huang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, China
| | - Wei-Hua Lai
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, China
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Jiao WH, Huang YN, Xu XF, Li YK, Liu Y, Wang ZC, Xu XL, Feng YX, Feng CM, Cao GH. Normal-state properties of the quasi-one-dimensional superconductor Ta 4Pd 3Te 16. J Phys Condens Matter 2019; 31:325601. [PMID: 31042685 DOI: 10.1088/1361-648x/ab1e9c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
We examined the physical properties of the quasi-one-dimensional superconductor Ta4Pd3Te16 in the normal state by detailed measurements of susceptibility, in-plane anisotropic resistivity, magnetoresistance, Hall resistivity, and Seebeck coefficient. The large Wilson ratio, as inferred from normal-state susceptibility, indicates strong electron-electron interaction. The Hall and Seebeck coefficients show not only significant temperature-dependent behavior, indicating the multiband effect, but also an obvious anomaly around T 1 = 40 K. Analyses of both the Hall resistivity and thermopower using a two-band model indicate that the electrons dominate the electrical transport at low temperatures. Our results imply that it is the quantum fluctuations of the charge order taking place in the temperature range 30-50 K that may result in the abnormal normal-state properties of Ta4Pd3Te16.
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Affiliation(s)
- Wen-He Jiao
- Department of Physics, Zhejiang University of Science and Technology, Hangzhou 310023, People's Republic of China
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11
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Li F, Wang HB, Peng Q, Sun YC, Zhang R, Pang B, Fang J, Zhang J, Huang YN. [Prediction of syncope with nonlinear dynamic analysis during head-up tilt in vasovagal syncope patients]. Beijing Da Xue Xue Bao Yi Xue Ban 2019; 51:430-438. [PMID: 31209413 DOI: 10.19723/j.issn.1671-167x.2019.03.009] [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: 11/20/2022]
Abstract
OBJECTIVE To quantify the relationship between cerebral blood flow velocity and peripheral blood pressure during hypotension period, aiming to predict the brain hypotension before symptomatic occurrence. METHODS Twenty vasovagal syncope (VVS) patients who had a previous clinical history were selected in groups and 20 pair-matched control subjects underwent 70° tilt-up test. The subjects remained supine for 30 minutes before recordings when Doppler probes, electrodes and Finapres device were prepared. After continuous baseline recordings for 10 min, the subjects underwent head up tilt (HUT) test (70°), and were standing upright for 30 minutes or until syncope was imminent. For ethical reasons, the subjects were turned back to supine position immediately after SBP dropped to ≥20 mmHg, when their consciousness persisted. The point of syncope was synchronized for all the subjects by the point SBP reached the minima. Their beat-to-beat blood pressures (BP) were recorded continuously and bilateral middle cerebral artery (MCA) flow velocities were obtained with two 2 MHz Doppler probes from a transcranial Doppler ultrasonography (TCD) system. A nonlinear dynamic method--multimodal pressure flow (MMPF) analysis was introduced to access cerebral autoregulation during different time intervals. We introduced a new indicator--syncope index (SI), which was extracted from blood flow velocity (BFV) signal to evaluate the variation of cerebral vascular tension, and could reflect the deepness of dicrotic notch in BFV signal. RESULTS Compared with the syncope index of the baseline value at the beginning of the tilt test, SI in VVS group showed significantly lower when the VVS occurred (0.16±0.10 vs.0.27±0.10,P<0.01),while there was no significant difference in syncope index between the control group at the end of the tilt test and the baseline value at the beginning of the tilt test. For those VVS patients, pulse index and resistance index had no significant change. Syncope index decreased significantly 3 minutes before the point of syncope (0.23±0.07 vs.0.29±0.07,P<0.01). CONCLUSION Dynamic regulation is exhausted when vasovagal syncope occurred. Tension decrease of small vessels could have some relationship with loss of the cerebral autoregulation capability. The proposed syncope index could be a useful parameter in predicting syncope of VVS patients since it decreased significantly up to 3 minutes earlier from the point of syncope.
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Affiliation(s)
- F Li
- Department of Neurology, Peking University First Hospital, Beijing 100034, China
| | - H B Wang
- Academy of Advanced Interdisciplinary Study, Peking University, Beijing 100871,China
| | - Q Peng
- Department of Neurology, Peking University First Hospital, Beijing 100034, China
| | - Y C Sun
- Department of Neurology, Peking University First Hospital, Beijing 100034, China
| | - R Zhang
- Academy of Advanced Interdisciplinary Study, Peking University, Beijing 100871,China
| | - B Pang
- Academy of Advanced Interdisciplinary Study, Peking University, Beijing 100871,China
| | - J Fang
- Academy of Advanced Interdisciplinary Study, Peking University, Beijing 100871,China
| | - J Zhang
- Academy of Advanced Interdisciplinary Study, Peking University, Beijing 100871,China
| | - Y N Huang
- Department of Neurology, Peking University First Hospital, Beijing 100034, China
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12
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Huang YN, Zhao ZH, Mao HJ, Yang JF, Wang T, Zhao L, Yang LM, Yu GM, Wang C. [Correlation between DCE-MRI quantitative perfusion histogram parameters, apparent diffusion coefficient and Ki-67 in different pathological types of lung cancer]. Zhonghua Yi Xue Za Zhi 2019; 99:1645-1650. [PMID: 31189264 DOI: 10.3760/cma.j.issn.0376-2491.2019.21.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the efficacy of dynamic contrast enhanced magnetic resonance imaging (DCE-MRI) histogram molecular imaging index, apparent diffusion coefficient (ADC) in different types of lung cancer and explore their correlation with Ki-67. Methods: A total of 33 cases of lung cancer patients confirmed by pathology in Shaoxing People's Hospital from March 2017 to March 2018 were collected, 28 males and 5 females aged 50-85 years old, including 15 cases of squamous cell carcinoma, 12 cases of adenocarcinoma, and 6 cases of small cell carcinoma. All patients performed DCE-MRI and DWI imaging within one week before surgery or puncture. ADC values, DCE-MRI quantitative perfusion parameters by histogram metrics analysis (mean value, skewness, kurtosis, uniformity, entropy, energy, quantile) of K(trans), K(ep), V(e), and V(p) were then collected. Ki-67 expression in lung cancer tissue was detected by immunohistochemical method. One-way analysis of variance and least significant difference were used to compare the differences among the parameters of the three groups which were normal distribution and equal variances, while Kruskal-Walls test and Mann-Whitney U test were used to compare the parameters that did not conform to normal distribution or variance. Pearson correlation analysis was used to compare the correlations between quantitative perfusion histogram parameters, ADC values and immunohistochemical scores of Ki-67. Results: The Ki-67 count in small cell lung cancer(458±82, P=0.011) and squamous cell carcinoma(355±277, P=0.034)were significantly higher than that in adenocarcinoma (168±164). The correlation analysis showed that there was a significant negative correlation between ADC values and Ki-67 (P=0.018, r=-0.416). And V(e) (Q5, Q10) was negatively related to Ki-67 (P=0.017, r=-0.420; P=0.040, r=-0.366). In squamous cell carcinoma patients, V(e) (homogeneity) was significantly negatively correlated with the expression of Ki-67 (P=0.033, r=-0.570). K(trans)(homogeneity) and V(e) (homogeneity, Q5, Q10, Q25) were significantly positively correlated with ADC values (P value from 0.001 to 0.035, r value from 0.545 to 0.765). Conclusion: DCE-MRI quantitative perfusion histogram parameters, ADC value can evaluate the lung cancer cell proliferation activity in different pathological types.
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Affiliation(s)
- Y N Huang
- Department of Radiology, Shaoxing People's Hospital (Shaoxing Hospital, Zhejiang University School of Medicine), Shaoxing 312000, China
| | - Z H Zhao
- Department of Radiology, Shaoxing People's Hospital (Shaoxing Hospital, Zhejiang University School of Medicine), Shaoxing 312000, China
| | - H J Mao
- Department of Radiology, Shaoxing People's Hospital (Shaoxing Hospital, Zhejiang University School of Medicine), Shaoxing 312000, China
| | - J F Yang
- Department of Radiology, Shaoxing People's Hospital (Shaoxing Hospital, Zhejiang University School of Medicine), Shaoxing 312000, China
| | - T Wang
- Department of Radiology, Shaoxing People's Hospital (Shaoxing Hospital, Zhejiang University School of Medicine), Shaoxing 312000, China
| | - L Zhao
- Department of Radiology, Shaoxing People's Hospital (Shaoxing Hospital, Zhejiang University School of Medicine), Shaoxing 312000, China
| | - L M Yang
- Department of Radiology, Shaoxing People's Hospital (Shaoxing Hospital, Zhejiang University School of Medicine), Shaoxing 312000, China
| | - G M Yu
- Department of Thoracic Surgery, Shaoxing People's Hospital(Shaoxing Hospital, Zhejiang University School of Medicine), Shaoxing 312000, China
| | - C Wang
- Department of Pathology, Shaoxing People's Hospital(Shaoxing Hospital, Zhejiang University School of Medicine), Shaoxing 312000, China
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Wu YP, Liu XY, Bai JR, Xie HC, Ye SL, Zhong K, Huang YN, Gao H. Inhibitory effect of a natural phenolic compound, 3-p-trans-coumaroyl-2-hydroxyquinic acid against the attachment phase of biofilm formation of Staphylococcus aureus through targeting sortase A. RSC Adv 2019; 9:32453-32461. [PMID: 35529766 PMCID: PMC9073164 DOI: 10.1039/c9ra05883d] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Accepted: 09/17/2019] [Indexed: 12/12/2022] Open
Abstract
3-p-trans-Coumaroyl-2-hydroxyquinic acid (CHQA), a natural phenolic compound, prevented Staphylococcus aureus biofilm formation due to the inhibition of the initial attachment stage of biofilm development by targeting sortase A.
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Affiliation(s)
- Yan-Ping Wu
- Department of Food Science and Technology
- College of Biomass and Engineering and Healthy Food Evaluation Research Center
- Sichuan University
- Chengdu 610065
- China
| | - Xiao-Yan Liu
- Department of Food Science and Technology
- College of Biomass and Engineering and Healthy Food Evaluation Research Center
- Sichuan University
- Chengdu 610065
- China
| | - Jin-Rong Bai
- Department of Food Science and Technology
- College of Biomass and Engineering and Healthy Food Evaluation Research Center
- Sichuan University
- Chengdu 610065
- China
| | - Hong-Chen Xie
- Department of Public Health
- West China Medical School of Sichuan University
- Chengdu 610041
- People's Republic of China
| | - Si-Liang Ye
- College of Animal Science
- Jilin University
- Changchun 130062
- People's Republic of China
| | - Kai Zhong
- Department of Food Science and Technology
- College of Biomass and Engineering and Healthy Food Evaluation Research Center
- Sichuan University
- Chengdu 610065
- China
| | - Yi-Na Huang
- Department of Public Health
- West China Medical School of Sichuan University
- Chengdu 610041
- People's Republic of China
| | - Hong Gao
- Department of Food Science and Technology
- College of Biomass and Engineering and Healthy Food Evaluation Research Center
- Sichuan University
- Chengdu 610065
- China
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Wu YP, Bai JR, Grosu E, Zhong K, Liu LJ, Tang MM, Huang YN, Gao H. Inhibitory Effect of 2R,3R-Dihydromyricetin on Biofilm Formation by Staphylococcus aureus. Foodborne Pathog Dis 2018; 15:475-480. [PMID: 29847738 DOI: 10.1089/fpd.2017.2405] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Affiliation(s)
- Yan-Ping Wu
- Healthy Food Evaluation Research Center, Sichuan University, Chengdu, China
- Department of Food Science and Technology, College of Light Industry, Textile and Food Engineering, Sichuan University, Chengdu, China
| | - Jin-Rong Bai
- Department of Food Science and Technology, College of Light Industry, Textile and Food Engineering, Sichuan University, Chengdu, China
| | - Elena Grosu
- Department of Food Science and Technology, College of Light Industry, Textile and Food Engineering, Sichuan University, Chengdu, China
| | - Kai Zhong
- Healthy Food Evaluation Research Center, Sichuan University, Chengdu, China
- Department of Food Science and Technology, College of Light Industry, Textile and Food Engineering, Sichuan University, Chengdu, China
| | - Li-Jin Liu
- Department of Public Health, West China Medical School, Sichuan University, Chengdu, China
| | - Meng-Meng Tang
- Department of Public Health, West China Medical School, Sichuan University, Chengdu, China
| | - Yi-Na Huang
- Department of Public Health, West China Medical School, Sichuan University, Chengdu, China
| | - Hong Gao
- Healthy Food Evaluation Research Center, Sichuan University, Chengdu, China
- Department of Food Science and Technology, College of Light Industry, Textile and Food Engineering, Sichuan University, Chengdu, China
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15
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Zhao H, Wang L, Chen L, Zhang J, Sun W, Salvi RJ, Huang YN, Wang M, Chen L. Temporary conductive hearing loss in early life impairs spatial memory of rats in adulthood. Brain Behav 2018; 8:e01004. [PMID: 29855161 PMCID: PMC6043706 DOI: 10.1002/brb3.1004] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Revised: 03/01/2018] [Accepted: 03/11/2018] [Indexed: 01/08/2023] Open
Abstract
INTRODUCTION It is known that an interruption of acoustic input in early life will result in abnormal development of the auditory system. Here, we further show that this negative impact actually spans beyond the auditory system to the hippocampus, a system critical for spatial memory. METHODS We induced a temporary conductive hearing loss (TCHL) in P14 rats by perforating the eardrum and allowing it to heal. The Morris water maze and Y-maze tests were deployed to evaluate spatial memory of the rats. Electrophysiological recordings and anatomical analysis were made to evaluate functional and structural changes in the hippocampus following TCHL. RESULTS The rats with the TCHL had nearly normal hearing at P42, but had a decreased performance with the Morris water maze and Y-maze tests compared with the control group. A functional deficit in the hippocampus of the rats with the TCHL was found as revealed by the depressed long-term potentiation and the reduced NMDA receptor-mediated postsynaptic current. A structural deficit in the hippocampus of those animals was also found as revealed the abnormal expression of the NMDA receptors, the decreased number of dendritic spines, the reduced postsynaptic density and the reduced level of neurogenesis. CONCLUSIONS Our study demonstrates that even temporary auditory sensory deprivation in early life of rats results in abnormal development of the hippocampus and consequently impairs spatial memory in adulthood.
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Affiliation(s)
- Han Zhao
- Hefei National Laboratory for Physical Sciences at the Microscale, School of Life Sciences, University of Science and Technology of China, Hefei, China.,Auditory Research Laboratory, University of Science and Technology of China, Hefei, China
| | - Li Wang
- Hefei National Laboratory for Physical Sciences at the Microscale, School of Life Sciences, University of Science and Technology of China, Hefei, China
| | - Liang Chen
- Hefei National Laboratory for Physical Sciences at the Microscale, School of Life Sciences, University of Science and Technology of China, Hefei, China
| | - Jinsheng Zhang
- Department of Otolaryngology-Head and Neck Surgery, Wayne State University School of Medicine, Detroit, Michigan
| | - Wei Sun
- Center for Hearing and Deafness, State University of New York at Buffalo, Buffalo, New York
| | - Richard J Salvi
- Center for Hearing and Deafness, State University of New York at Buffalo, Buffalo, New York
| | - Yi-Na Huang
- Hefei National Laboratory for Physical Sciences at the Microscale, School of Life Sciences, University of Science and Technology of China, Hefei, China.,Auditory Research Laboratory, University of Science and Technology of China, Hefei, China
| | - Ming Wang
- Hefei National Laboratory for Physical Sciences at the Microscale, School of Life Sciences, University of Science and Technology of China, Hefei, China.,Auditory Research Laboratory, University of Science and Technology of China, Hefei, China
| | - Lin Chen
- Hefei National Laboratory for Physical Sciences at the Microscale, School of Life Sciences, University of Science and Technology of China, Hefei, China.,Auditory Research Laboratory, University of Science and Technology of China, Hefei, China
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16
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Wu YP, Bai JR, Zhong K, Bai DD, Huang YN, Xiao K, Ran Y, Gao H. Antibacterial Effect of 2R,3R-dihydromyricetin on the Cellular Functions of Staphylococcus aureus. Biosci Biotechnol Biochem 2017; 82:135-138. [PMID: 29235425 DOI: 10.1080/09168451.2017.1413324] [Citation(s) in RCA: 5] [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] [Indexed: 10/18/2022]
Abstract
The C-3-OH, C-4 carbonyl oxygen and hydrogenation of C2=C3 bond on the C-ring of 2R,3R-dihydromyricetin (DMY) proved to be not necessary for the antibacterial activity against Staphylococcus aureus. DMY significantly decreased the intracellular ATP of S. aureus cells but had few effects on pHin, proline oxidation, succinate dehydrogenase activity or malate dehydrogenase activity.
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Affiliation(s)
- Yan-Ping Wu
- a Department of Food Science and Technology, College of Light Industry, Textile and Food Engineering , Sichuan University , Chengdu , China
| | - Jin-Rong Bai
- a Department of Food Science and Technology, College of Light Industry, Textile and Food Engineering , Sichuan University , Chengdu , China
| | - Kai Zhong
- a Department of Food Science and Technology, College of Light Industry, Textile and Food Engineering , Sichuan University , Chengdu , China
| | - Ding-Ding Bai
- b Department of Public Health, West China Medical School , Sichuan University , Chengdu , China
| | - Yi-Na Huang
- b Department of Public Health, West China Medical School , Sichuan University , Chengdu , China
| | - Kai Xiao
- a Department of Food Science and Technology, College of Light Industry, Textile and Food Engineering , Sichuan University , Chengdu , China
| | - Yun Ran
- b Department of Public Health, West China Medical School , Sichuan University , Chengdu , China
| | - Hong Gao
- a Department of Food Science and Technology, College of Light Industry, Textile and Food Engineering , Sichuan University , Chengdu , China
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Huang YN, Wang J, Chen BJ, Jiang QY, Guo YF, Lan GQ, Jiang HS. Gene expression and enzyme activity of lipoprotein lipase correlate with intramuscular fat content in Guangxi san-huang and Arbor Acres chickens. Genet Mol Res 2016; 15:gmr7414. [PMID: 27323106 DOI: 10.4238/gmr.15027414] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Lipoprotein lipase (LPL) is a key enzyme in lipid metabolism. This study investigated LPL gene expression, LPL enzyme activity, and the correlation of each with intramuscular fat (IMF) in Chinese Guangxi san-huang (GXSH) and Arbor Acres (AA) chickens. The results showed that age and breed had significant effects on LPL expression and enzyme activity. Correlation analyses showed significant positive correlations between LPL expression levels and IMF contents in the breast and thigh tissues of both GXSH (r = 0.712, P = 0.001; r = 0.792, P < 0.001, respectively) and AA (r = 0.644, P < 0.001; r = 0.545, P < 0.001, respectively) chickens. The results also indicated a significant positive correlation between LPL enzyme activity and IMF contents in the breast and thigh tissues of both GXSH (r = 0.615, P = 0.001; r = 0.685, P < 0.001, respectively) and AA (r = 0.600, P = 0.001; r = 0.528, P = 0.003, respectively) chickens. The results indicated that the LPL gene was significantly correlated with IMF in these two breeds. The results presented here could contribute to knowledge of LPL mRNA developmental expression patterns and enzyme activity, and it could facilitate further research on the molecular mechanisms underlying IMF deposition in chickens.
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Affiliation(s)
- Y N Huang
- College of Animal Science and Technology, Guangxi University, Nanning, China
| | - J Wang
- College of Animal Science and Technology, Guangxi University, Nanning, China
| | - B J Chen
- College of Animal Science and Technology, Guangxi University, Nanning, China
| | - Q Y Jiang
- College of Animal Science and Technology, Guangxi University, Nanning, China
| | - Y F Guo
- College of Animal Science and Technology, Guangxi University, Nanning, China
| | - G Q Lan
- College of Animal Science and Technology, Guangxi University, Nanning, China
| | - H S Jiang
- College of Animal Science and Technology, Guangxi University, Nanning, China
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Deng QQ, Tang J, Chen C, Markus H, Huang YN, Zhao H, Ratanakorn D, Wong KSL, Fu JH. The curative effect comparison of two kinds of therapeutic regimens on decreasing the relative intensity of microembolic signal in CLAIR trial. J Neurol Sci 2016; 367:18-21. [PMID: 27423556 DOI: 10.1016/j.jns.2016.05.042] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2016] [Revised: 04/26/2016] [Accepted: 05/20/2016] [Indexed: 10/21/2022]
Abstract
BACKGROUND Microembolic signals (MESs) are direct markers of unstable large artery atherosclerotic plaques. In a previous study, we found that the number of MESs is associated with stroke recurrence and that clopidogrel plus aspirin more effectively reduce the number of MESs than does aspirin alone. Stroke recurrence is associated with not only the number of MESs but also the size of the MES, which can theoretically be estimated by monitoring the MES intensity via transcranial doppler (TCD). Thus, we compared the effects of clopidogrel and aspirin with aspirin alone on MES intensity using TCD. METHODS We recruited 100 patients who experienced acute ischemic stroke or transient ischemic attack (TIA) within 7days of symptom onset. All patients also had large artery stenosis in the cerebral or carotid arteries and the presence of MES as revealed by TCD. The patients were randomized to receive either aspirin or clopidogrel and aspirin for 7days. MES monitoring was performed on days 2 and 7. RESULTS Intent-to-treat (ITT) analysis (46 patients in the dual therapy group, 52 patients in the monotherapy group) and per-protocol (PP) analysis (25 patients in the dual therapy group, 31 patients in the monotherapy group) were performed on 98 patients. The primary finding was that the MES intensity was dramatically reduced in the dual therapy group. ITT analysis of the dual therapy group revealed that the MES intensity was 8.04 (0-16) dB before treatment, 0.00 (0-17) dB on day 2, and 0.00 (0-12) dB on day 7 (P=0.000). In the monotherapy group, the MES intensity was 9.00 (0-20) dB before treatment, 8.25 (0-17) dB on day 2, and 7.0 (0-18) dB on day 7 (P=0.577). PP analysis revealed similar results. No severe hemorrhagic complications were detected. The two patients in this study who experienced stroke recurrence were in the monotherapy group. CONCLUSIONS Clopidogrel and aspirin more effectively decrease the MES intensity than aspirin alone in patients with large artery stenotic minor stroke or TIA.
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Affiliation(s)
- Q Q Deng
- Department of Neurology, Jing'an District Central Hospital of Shanghai, Shanghai, China.
| | - J Tang
- Department of Neurology, Huashan Hospital affiliated to Fudan University, Shanghai, China.
| | - C Chen
- Department of Pharmacology, National University of Singapore, Singapore.
| | - H Markus
- Department of Clinical Neuroscience, St George's, University of London, London, UK.
| | - Y N Huang
- Department of Neurology, Peking University First Hospital, Beijing, China.
| | - H Zhao
- Department of Neurology, The First Affiliated Hospital of Wenzhou Medical College, Wenzhou, China.
| | | | - K S L Wong
- Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong SAR, China.
| | - J H Fu
- Department of Neurology, Huashan Hospital affiliated to Fudan University, Shanghai, China; Department of Neurology, Pudong hospital, Shanghai, China.
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Huang YN, Li J, Jiang QY, Shen XS, Yan XY, Tang YB, Huang J, Guo YF, Lan GQ, Jiang HS. Complete mitochondrial genome of the Cyclemys dentata and phylogenetic analysis of the major family Geoemydidae. Genet Mol Res 2015; 14:3234-43. [PMID: 25966089 DOI: 10.4238/2015.april.13.2] [Citation(s) in RCA: 5] [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] [Indexed: 11/03/2022]
Abstract
In the present study, the complete mitochondrial (mt) genome of Cyclemys dentata was determined using PCR reactions. The structural organization and gene order of C. dentata were equivalent to those of most other vertebrates. The mt genome was 16,489 bp in length, has rich A+T content, consisting of 13 protein-coding genes, 2 ribosomal RNA genes, 22 transfer RNA genes, and a control region (D-loop). All protein-coding genes started with ATG, many genes have complete stop codons, except ND2, COX3, ND3, and cyt-b genes had incomplete stop codons of T. The light-strand replication origin (OL) of C. dentata might fold into a stable stem-loop secondary structure, and its loop had 2 nt less than that of the Cyclemys atripons OL sequence. The D-Loop of C. dentata contained a central domain (CD), 2 extended termination associated sequences (ETAS1, ETAS2) and 3 conserved sequence blocks (CSB1, CSB2, CSB3). The average length of 20 turtles' mt genomes was 16,692.5 bp, including 34.1% A, 27.0% T, 26.0% C and 12.9% G. The C. dentata mitochondrial genome could provide useful data for further studies on phylogenetics and conservation genetics of this species. The phylogenetic relationships of the family Geoemydidae were analyzed by maximum-likelihood (ML) and neighbor-joining (NJ) based on concatenated sequences of 13 protein-coding genes from 20 turtle species. The ML and NJ trees had homologous topologies. The results support the existing classification of the genera of Geoemydidae, that C. dentata was a sister species of C. atripons, Pyxidea nested in Cuora, and Chinemys was synonymous with Mauremys.
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Affiliation(s)
- Y N Huang
- College of Animal Science and Technology, Guangxi University, Nanning, China
| | - J Li
- College of Animal Science and Technology, Guangxi University, Nanning, China
| | - Q Y Jiang
- College of Animal Science and Technology, Guangxi University, Nanning, China
| | - X S Shen
- College of Animal Science and Technology, Guangxi University, Nanning, China
| | - X Y Yan
- College of Animal Science and Technology, Guangxi University, Nanning, China
| | - Y B Tang
- College of Animal Science and Technology, Guangxi University, Nanning, China
| | - J Huang
- College of Animal Science and Technology, Guangxi University, Nanning, China
| | - Y F Guo
- College of Animal Science and Technology, Guangxi University, Nanning, China
| | - G Q Lan
- College of Animal Science and Technology, Guangxi University, Nanning, China
| | - H S Jiang
- College of Animal Science and Technology, Guangxi University, Nanning, China
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Wu YP, Liang X, Liu XY, Zhong K, Gao B, Huang YN, Gao H. Cedrus deodara pine needle as a potential source of natural antioxidants: Bioactive constituents and antioxidant activities. J Funct Foods 2015. [DOI: 10.1016/j.jff.2015.02.023] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Huang YN, Zhao DD, Gao B, Zhong K, Zhu RX, Zhang Y, Xie WJ, Jia LR, Gao H. Anti-hyperglycemic effect of chebulagic acid from the fruits of Terminalia chebula Retz. Int J Mol Sci 2012; 13:6320-6333. [PMID: 22754367 PMCID: PMC3382786 DOI: 10.3390/ijms13056320] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [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: 04/01/2012] [Revised: 05/14/2012] [Accepted: 05/16/2012] [Indexed: 11/26/2022] Open
Abstract
In the present study, we firstly compared rat intestinal α-glucosidase inhibitory activity by different ethanol-aqueous extractions from the dried fruits of Terminalia chebula Retz. The enzymatic assay showed that the 80% ethanol extract was more potent against maltase activity than both 50% and 100% ethanol extracts. By HPLC analysis, it was determined that the 80% ethanol extract had a higher content of chebulagic acid than each of 50% or 100% ethanol extract. Next, we investigated how efficiently chebulagic acid could inhibit sugar digestion by determining the glucose level on the apical side of the Caco-2 cell monolayer. The result showed that the maltose-hydrolysis activity was down-regulated by chebulagic acid, which proved to be a reversible inhibitor of maltase in Caco-2 cells. On the other hand, chebulagic acid showed a weak inhibition of sucrose-hydrolysis activity. Meanwhile, chebulagic acid did not have an obvious influence on intestinal glucose uptake and was not effective on glucose transporters. Further animal studies revealed that the oral administration of chebulagic acid (100 mg/kg body weight) significantly reduced postprandial blood glucose levels by 11.1% in maltose-loaded Sprague-Dawley (SD) rats compared with the control group, whereas the oral administration of chebulagic acid did not show a suppressive effect on postprandial hyperglycemia in sucrose- or glucose-loaded SD-rats. The results presented here suggest that chebulagic acid from T. chebula can be used to control blood glucose and manage type 2 diabetes, although clinical trials are needed.
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Affiliation(s)
- Yi-Na Huang
- Department of Public Health, Hua Xi Medicinal Center of Sichuan University, Chengdu 610041, China; E-Mails: (Y.-N.H.); (B.G.)
| | - Dong-Dong Zhao
- Sichuan Academy of Medical Science & Sichuan Provincial People’s Hospital, Chengdu 610072, China; E-Mail:
| | - Bo Gao
- Department of Public Health, Hua Xi Medicinal Center of Sichuan University, Chengdu 610041, China; E-Mails: (Y.-N.H.); (B.G.)
| | - Kai Zhong
- College of Light Industry, Textile and Food Engineering, Sichuan University, Chengdu 610065, China; E-Mails: (K.Z.); (R.-X.Z.); (Y.Z.); (W.-J.X.)
| | - Rui-Xue Zhu
- College of Light Industry, Textile and Food Engineering, Sichuan University, Chengdu 610065, China; E-Mails: (K.Z.); (R.-X.Z.); (Y.Z.); (W.-J.X.)
| | - Yan Zhang
- College of Light Industry, Textile and Food Engineering, Sichuan University, Chengdu 610065, China; E-Mails: (K.Z.); (R.-X.Z.); (Y.Z.); (W.-J.X.)
| | - Wang-Jun Xie
- College of Light Industry, Textile and Food Engineering, Sichuan University, Chengdu 610065, China; E-Mails: (K.Z.); (R.-X.Z.); (Y.Z.); (W.-J.X.)
| | - Li-Rong Jia
- College of Light Industry, Textile and Food Engineering, Sichuan University, Chengdu 610065, China; E-Mails: (K.Z.); (R.-X.Z.); (Y.Z.); (W.-J.X.)
- Authors to whom correspondence should be addressed; E-Mails: (L.-R.J.); (H.G.); Tel.: +86-28-8540-5236; Fax: +86-28-8540-5137
| | - Hong Gao
- College of Light Industry, Textile and Food Engineering, Sichuan University, Chengdu 610065, China; E-Mails: (K.Z.); (R.-X.Z.); (Y.Z.); (W.-J.X.)
- Authors to whom correspondence should be addressed; E-Mails: (L.-R.J.); (H.G.); Tel.: +86-28-8540-5236; Fax: +86-28-8540-5137
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Wang W, Ye SD, Zhou KQ, Wu LM, Huang YN. High doses of salicylate and aspirin are inhibitory on acid-sensing ion channels and protective against acidosis-induced neuronal injury in the rat cortical neuron. J Neurosci Res 2011; 90:267-77. [PMID: 21969311 DOI: 10.1002/jnr.22742] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2010] [Revised: 06/16/2011] [Accepted: 06/20/2011] [Indexed: 12/16/2022]
Abstract
Aspirin and its main metabolite salicylate are widely used to relieve pain, treat inflammatory diseases, and prevent ischemic stroke. Multiple pathways are responsible for the therapeutic actions exerted by these drugs. One of the pathways is targeting neuronal receptors/ion channels in the central nervous system. Correspondingly, increasing evidence has implicated acid-sensing ion channels (ASICs) in the processes of the diseases that are medicated by aspirin and salicylate. We therefore employed whole-cell patch-clamp recordings to examine the effects of salicylate as well as aspirin on ASICs in cultured cortical neurons of the rat. We recorded rapid and reversible inhibition of ASIC current by millimolar concentrations of aspirin and salicylate and found that salicylate reduced acidosis-induced membrane depolarization. These data suggest that ASICs in the cortex are molecular targets of high doses of aspirin and salicylate. In addition, the results from lactate dehydrogenase release measurement showed that high doses of aspirin and salicylate protected the cortical neuron from acidosis-induced neuronal injury. These findings may contribute to a better understanding of the therapeutic mechanisms of aspirin and salicylate actions in the brain and provide new evidence on aspirin and salicylate used as neuroprotective agents in the treatment of ischemic stroke.
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Affiliation(s)
- Wei Wang
- Department of Endocrinology, Anhui Provincial Hospital Affiliated to Anhui Medical University, Hefei, China.
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Cong D, Tang Z, Li L, Huang Y, Wang J, Chen L. Cross-talk between NMDA and GABAA receptors in cultured neurons of the rat inferior colliculus. Sci China Life Sci 2011; 54:560-6. [DOI: 10.1007/s11427-011-4178-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2010] [Accepted: 03/24/2011] [Indexed: 10/18/2022]
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Zeng WC, Jia LR, Zhang Y, Cen JQ, Chen X, Gao H, Feng S, Huang YN. Antibrowning and Antimicrobial Activities of the Water-Soluble Extract from Pine Needles of Cedrus deodara. J Food Sci 2011; 76:C318-23. [DOI: 10.1111/j.1750-3841.2010.02023.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Huang YN, Zhao YL, Gao XL, Zhao ZF, Jing Z, Zeng WC, Yang R, Peng R, Tong T, Wang LF, Cen JQ, Gao H. Intestinal alpha-glucosidase inhibitory activity and toxicological evaluation of Nymphaea stellata flowers extract. J Ethnopharmacol 2010; 131:306-312. [PMID: 20600753 DOI: 10.1016/j.jep.2010.06.035] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2010] [Revised: 06/21/2010] [Accepted: 06/22/2010] [Indexed: 05/29/2023]
Abstract
AIM OF THE STUDY Nymphaea stellata willd. flowers (NSF) are used as a traditional medicine in India and Nepal to treat diabetic disease. Different works have demonstrated that NSF extract showed antihyperglycemic effect on alloxan-induced diabetic rats. In the present work we evaluated in vitro intestinal alpha-glucosidase inhibition as the possible mode of action of NSF extract on suppressing postprandial hyperglycemia for curing diabetic mellitus. In addition, NSF extract was studied to assess its possible acute oral toxicity and genotoxicity. MATERIALS AND METHODS Rat intestinal crude enzyme preparation and Caco-2 monolayer were used to evaluate alpha-glucosidase inhibitory activity of NSF extract. The main alpha-glucosidase inhibitors were detected by HPLC. For acute toxicity test, NSF extract was administered at doses of 2000, 5000 and 10,000 mg/kg body to three groups of 10 ICR mice each, and then clinical symptoms including mortality, clinical sign and gross findings were observed once a day for 14 days. In Ames test, histidine-dependent auxotrophic mutants of Salmonella typhimurium (strains TA97, TA98, TA100, TA102 and TA1535) were used and incubated in the presence and absence of S9 metabolic activation using NSF extract with concentrations of 150-5000 microg/plate. The chromosome aberration test was conducted with Chinese hamster lung (CHL) cells treated with NSF extract at doses of 150-5000 microg/ml in the presence and absence of S9 metabolic activation. In the in vivo mouse micronucleus assay, 9-week-old male and female ICR mice (n=90, 25-30 g) were administered daily by oral gavage at doses of 2.5, 5.0 and 10.0 g/kg body for 1 or 2 days. Bone marrow smears were prepared from each treatment group 24h after last administration and then polychromatic erythrocytes (PCEs) and normochromatic erythrocytes (NCEs) were identified. RESULTS NSF extract showed potent rat intestinal alpha-glucosidase inhibitory activity for maltose hydrolysis with ED(50) value of 0.1 mg/ml. In Caco-2 monolayer, alpha-glucosidase activity for the maltose hydrolysis was down-regulated by NSF extract at a concentration of 0.05 mg/well level, showing 74% inhibition compared to the saline treated control. NSF was rich in phenol contents and the main alpha-glucosidase inhibitor, 1,2,3,4,6-penta-O-galloyl-beta-D-glucose, was identified together with two phenolic compounds of gallic acid and corilagin. In acute toxicity test, NSF extract did not produce any toxic signs or deaths and the LD(50) value of this extract could be greater than 10,000 mg/kg body weight. These results of genotoxicity assessment showed that NSF extract did not cause genotoxic effects in Ames test, in the in vitro chromosomal aberration assay and in the in vivo micronucleus assay. CONCLUSION The current study shows that the extract from Nymphaea stellata flowers exhibits significant intestinal alpha-glucosidase inhibitory activity, without showing any acute toxicity or genotoxicity, which may be useful in suppressing postprandial hyperglycemia in diabetics. The results presented here suggest that the use of NSF in folk medicine as a natural antidiabetic treatment could be safe as well as beneficial.
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Affiliation(s)
- Yi-Na Huang
- Department of Public Health, Hua Xi Medicinal Center of Sichuan University, Chengdu, PR China
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Zhao Y, Huang YN, Shi L, Chen L. Analysis of magnetic elements in otoliths of the macula lagena in homing pigeons with inductively coupled plasma mass spectrometry. Neurosci Bull 2009; 25:101-8. [PMID: 19448683 DOI: 10.1007/s12264-009-0311-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
Abstract
OBJECTIVE The macula lagena in birds is located at the apical end of the cochlea and contains many tiny otoliths. The macula lagena is innervated and has neural projections to the brainstem, but its physiological function is still unclear. It remains disputable that it is because otoliths in the lagena are rich in elements Fe and Zn that birds can obtain geomagnetic information for homing. To clarify this issue, we carried out a study to determine whether or not otoliths in the lagena of homing pigeons are richer in magnetic elements than those in the saccule and the utricle. METHODS The contents of ferromagnetic elements (Fe, Co, Ni) and other metal elements in lagenal otoliths of adult homing pigeons were precisely analyzed with inductively coupled plasma mass spectrometry (ICP-MS) of high sensitivity, and then they were compared with those in saccular and utricular otoliths (all the contents were normalized to Ca). RESULTS In adult homing pigeons, the contents of ferromagnetic elements (Fe, Co, Ni) in lagenal otoliths were less than 0.7% (normalized to Ca element) and were the same order in magnitude as those in saccular and utricular otoliths. The content of Fe in lagenal otoliths was not significantly different from that in utricular otoliths and was even lower than that in saccular otoliths. The content of Co in lagenal otoliths was lower than that in saccular otoliths and higher than that in utricular otoliths. The content of Ni in lagenal otoliths was not significantly different from that in saccular otoliths and was higher than that in utricular otoliths. The contents of other metal elements Na, Mg, K, Al, Mn and Pb in lagenal otoliths were not significantly different from those in utricular and saccular otoliths. The contents of metal elements Zn, Ba and Cu in lagenal otoliths were lower than those in saccular otoliths. CONCLUSION The contents of magnetic elements in lagenal otoliths of homing pigeons are not much higher than those in utricular and saccular otoliths, which does not support the hypothesis that birds depend on high contents of Fe and Zn in lagenal otoliths for sensation of geomagnetic information. Similarities in morphology, element ingredient and element content between lagenal otoliths and utricular otoliths suggest that the two types of otolithic organs may play similar roles in sensing gravitational and acceleration signals.
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Affiliation(s)
- Ying Zhao
- Auditory Research Laboratory, School of Life Sciences, University of Science and Technology of China, Hefei 230027, China
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Gao H, Huang YN, Gao B, Li P, Inagaki C, Kawabata J. Inhibitory effect on α-glucosidase by Adhatoda vasica Nees. Food Chem 2008; 108:965-72. [DOI: 10.1016/j.foodchem.2007.12.002] [Citation(s) in RCA: 73] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2007] [Revised: 10/23/2007] [Accepted: 12/01/2007] [Indexed: 01/12/2023]
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Wang HT, Luo B, Huang YN, Zhou KQ, Chen L. Sodium salicylate suppresses serotonin-induced enhancement of GABAergic spontaneous inhibitory postsynaptic currents in rat inferior colliculus in vitro. Hear Res 2008; 236:42-51. [DOI: 10.1016/j.heares.2007.11.015] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2007] [Revised: 11/27/2007] [Accepted: 11/27/2007] [Indexed: 10/22/2022]
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Abstract
We studied 590 asymptomatic villagers aged > or =40 years in Liangbei County in central rural China and found 41 subjects (prevalence 6.9%) with intracranial atherosclerosis. In a multivariate analysis, the significant risk factors for intracranial stenosis were hypertension (OR 2.53; 95% CI 1.12 to 5.72), glycosuria (OR 3; 1.19 to 7.97), heart disease (OR 4; 1.39 to 11.6), and family history of stroke (OR 5.2; 1.38 to 20). Intracranial atherosclerosis is not uncommon among asymptomatic Chinese subjects.
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Affiliation(s)
- K S Wong
- Department of Medicine & Therapeutics, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong.
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Liao C, Wu JY, Xu ZP, Li Y, Yang X, Chen JS, Tang XW, Gu SL, Huang YN, Tang PH, Tsang KS. Indiscernible benefit of high-resolution HLA typing in improving long-term clinical outcome of unrelated umbilical cord blood transplant. Bone Marrow Transplant 2007; 40:201-8. [PMID: 17530001 DOI: 10.1038/sj.bmt.1705711] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The success of allogeneic hematopoietic stem cell transplantation depends in part on the accuracy of human leukocyte antigen (HLA) matching between the donor-recipient pair. The higher the number of matching HLA alleles, the smaller the chance that the transplant recipient will develop complications. Umbilical cord blood (UCB) transplantation was noted to result in a remarkably low frequency and severity of graft-versus-host disease (GvHD) and graft rejection compared to that in unrelated bone marrow transplant recipients. At present most banks match UCB donors for respective recipients by HLA-A, -B low-resolution typing and -DRB1 high-resolution typing. We retrospectively conducted high-resolution sequence-based HLA typing on DNA samples available from 65 Chinese UCB-recipient pairs typed previously by using low-resolution sequence-specific oligonucleotide probes and sequence-specific primers, and evaluated the clinical outcome. High-resolution typing revealed imperceptible HLA alleles that were hardly identified in low-resolution typing. Univariate analyses demonstrated no significant correlation between the extents of high-resolution HLA disparity with engraftment, graft failure, acute GvHD, transplant-related mortality and long-term 6-year overall survival. Data from the study suggest that high-resolution typing for HLA-A, -B and -DRB1 contributed no substantial improvement to UCB transplant outcome. Low-resolution typing appears to be amenable to matching UCB-recipient pairs without compromising the quality of transplant.
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Affiliation(s)
- C Liao
- Guangzhou Cord Blood Bank, Guangzhou Medical College, Guangzhou Maternal and Neonatal Hospital, Guangzhou, China.
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Wu JY, Liao C, Xu ZP, Chen JS, Gu SL, Huang YN, Li Y, Tang XW, Yang X, Tang PH, Tsang KS. Banking and transplantation of umbilical cord blood in Guangzhou, China. Cytotherapy 2006; 8:488-97. [PMID: 17050254 DOI: 10.1080/14653240600920790] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
BACKGROUND Umbilical cord blood (UCB) is an alternative source of hematopoietic stem cells (HSC) for transplantation of patients with hematologic malignancies or hereditary diseases. METHODS We developed a provincial UCB bank in Guangzhou, China, using good manufacturing practices and standard operating procedures to address donor eligibility, collection, characterization, processing, storage and release from quarantine. The banking activities were analyzed. RESULTS From June 1998 to May 2005, 8623 UCB units of Han ethnic origin were collected; 4147 (48.1%) were stored, while 4476 (51.9%) were discarded as a result of pre-determined exclusion criteria. A median volume of 95.5 mL (range 60-227.7) and 1.2 x 10(9) (0.8-9.3) nucleated cells were collected. The cell viability was 97.8% (90-100%). The CD34+ cell count of 3691 (89.0%) UCB units was 5.2 x 10(6) (0.3-131.6) and clonogenic assays of 4036 (97.3%) UCB units demonstrated 9.8 x 10(5) (0.04-135.8) CFU-GM, 0.3 x 10(5) (0.0-18.6) CFU-GEMM and 8.8 x 10(5) (0.0-74.2) BFU-E. A total of 0.4% (15/3863) UCB derived from babies known to have health problems at age 6 months was discarded. Up to May 2005, 151 units were issued for transplantation to 127 patients [90 (70.9%) children and 37 (29.1%) adults]. The infused nucleated cells in unrelated single-unit recipients were 3.4 x 10(7)/kg (1.7-14.9) for adults (n=19) and 5.7 x 10(7)/kg (2.0-20.5) for children (n=71), respectively. The numbers of days for the engraftment of neutrophils among 65 children and 22 adults were 17 (7-41) and 20 (10-42), respectively. DISCUSSION Data of this study show that stringent procedures and comprehensive policies are requisite for pursuing the banking and release of quality UCB for successful transplantation.
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Affiliation(s)
- J Y Wu
- Guangzhou Cord Blood Bank, Guangzhou Maternal and Neonatal Hospital, Guangzhou, China
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Li CX, Gong M, Huang YN, Tang ZQ, Chen L. Morphometry of otoliths in chicken macula lagena. Neurosci Lett 2006; 404:83-6. [PMID: 16806693 DOI: 10.1016/j.neulet.2006.05.046] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2005] [Revised: 05/18/2006] [Accepted: 05/26/2006] [Indexed: 10/24/2022]
Abstract
The macula lagena located at the apical end of the cochlea in birds is characterized by the presence of numerous otoliths with unclear sensory functions. These otoliths are reported to be similar to those in the vestibular system but their detailed features in morphology are unknown. In the present study, we examined the number, size and shape of otoliths from the macula lagena in Chinese domestic chickens (Gallus Ling Nan) with a scanning electron microscope for morphometry. For chickens aged 10-15 post-hatch days, the otoliths in each macula lagena were counted to be 16,055 +/- 4038 (mean +/- S.D., n = 4). The average length and width were 12.98 +/- 3.70 microm and 5.10 +/- 1.48 microm (n = 526 otoliths), respectively. The ratio of length to width for the otolith was 2.58 +/- 0.39 (n = 526 otoliths) and remained relatively constant despite their variations in physical size. Almost all the otoliths were in regular shape and appeared like isolated cylinders with smooth facets at each end, but a few of them (0.025% of 64,221 otoliths screened) were found to be in odd shapes, such as T-shape and cross-shape. The results suggest that otoliths in the macula lagena and those in the vestibular system of bird's inner ear have similar physical properties and may play a similar role in sensing gravitational and acceleration signals.
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Affiliation(s)
- Chang-Xiang Li
- Auditory Research Laboratory, School of Life Sciences, University of Science and Technology of China, Hefei
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Li DZ, Liao C, Li J, Xie XM, Huang YN, Wu QC. Hemoglobin H hydrops fetalis syndrome resulting from the association of the - -SEA deletion and the alphaQuong Szealpha mutation in a Chinese woman. Eur J Haematol 2005; 75:259-61. [PMID: 16104884 DOI: 10.1111/j.1600-0609.2005.00493.x] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
A case with Hb H hydrops fetalis syndrome resulting from the association of the - -(SEA) deletion and the alpha(Quong Sze)alpha mutation is reported. This is the first description of Hb H hydrops associated with the Hb Quong Sze mutation.
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Affiliation(s)
- D Z Li
- Prenatal Diagnostic Center, Guangzhou Maternal & Neonatal Hospital, Guangzhou Medical College, Guangdong, China.
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Abstract
We propose a dynamic structure of coupled dynamic molecular strings for supercooled small polar molecule liquids and accordingly we obtain the Hamiltonian of the rotational degrees of freedom of the system. From the Hamiltonian, the strongly correlated supercooled polar liquid state is renormalized to a normal superdipole liquid state. This scenario describes the following main features of the primary or alpha-relaxation dynamics in supercooled polar liquids: (1) the average relaxation time evolves from a high temperature Arrhenius to a low temperature non-Arrhenius or super-Arrhenius behavior; (2) the relaxation function crosses over from the high temperature exponential to low temperature nonexponential form; and (3) the temperature dependence of the relaxation strength shows non-Curie features. According to the present model, the crossover phenomena of the first two characteristics arise from the transition between the superdipole gas and the superdipole liquid. The model predictions are quantitatively compared with the experimental results of glycerol, a typical glass former.
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Affiliation(s)
- Y N Huang
- National Laboratory of Solid State Microstructures, Department of Physics, Nanjing University, Nanjing 210093, People's Republic of China.
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Xu H, Zhou KQ, Huang YN, Chen L, Xu TL. Taurine activates strychnine-sensitive glycine receptors in neurons of the rat inferior colliculus. Brain Res 2004; 1021:232-40. [PMID: 15342271 DOI: 10.1016/j.brainres.2004.07.001] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/06/2004] [Indexed: 11/20/2022]
Abstract
Taurine (Tau) is one of the most abundant free amino acids in the mammalian central nervous system. Whether the neurotransmission of the central auditory system is regulated or modulated by Tau is not clear. In the present study, we investigated the electrophysiological and pharmacological properties of Tau-activated currents in acutely dissociated neurons of the rat inferior colliculus (IC) using whole cell patch clamp recordings. At a holding potential of -60 mV and under a condition of chloride equilibrium potential near 0 mV, Tau activated an inward current and its half-maximal activation concentration was equal to 0.37 mM. The measured reversal potential of Tau-activated currents was close to theoretical chloride equilibrium potential. The currents evoked by Tau at both low (1 mM) and high (10 mM) concentrations were almost completely inhibited by strychnine, a glycine receptor antagonist. The Tau-activated current, however, was not affected by bicuculline, a GABA(A) receptor antagonist. Tau at increased concentrations progressively reduced the current response to subsequent glycine application. At saturated concentrations, Tau-activated current and glycine-activated current were mutually cross-desensitized by each other. These findings indicate that Tau activates glycine receptors in neurons of the rat IC and thus may have a functional role in regulating or modulating the neurotransmission of the central auditory system in mammals.
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Affiliation(s)
- Han Xu
- Department of Neurobiology and Biophysics, School of Life Sciences, University of Science and Technology of China, PO Box 4, Hefei 230027, China
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Huang YN, Wang CJ, Ngai KL, Wang YN, Riande E. Modeling dynamically heterogeneous coupled relaxations. Phys Rev E Stat Nonlin Soft Matter Phys 2001; 64:041202. [PMID: 11690014 DOI: 10.1103/physreve.64.041202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/1999] [Revised: 07/16/2001] [Indexed: 05/23/2023]
Abstract
A model describing dynamically heterogeneous relaxation in complex coupled systems is presented. The model predicts the splitting of a high-temperature single Debye relaxation to a low-temperature bimodal relaxation. The bimodal process shows a crossover from a Debye-type relaxation to an approximately stretched-exponential relaxation. Some general features of relaxation in complex systems emerge from the predictions of the model, and a comparison of the model with experiments is reported.
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Affiliation(s)
- Y N Huang
- Department of Physics, Nanjing University, Nanjing 210093, China
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Abstract
In this paper, we study the characteristics of the Reynolds stress under a change of frame, as defined by the Euclidean group of transformation. We show that being subject to the dynamical processes induced from the mean Navier-Stokes equations, the invariance group of the fluctuating velocity and the Reynolds stress is no longer the Euclidean group of transformation, which is merely a kinematical aspect, but reduces to the extended Galilean group of transformation. As a consequence, in contrast to developing the constitutive equations for the Cauchy stress in continuum mechanics, wherein the principle of material frame-indifference is a guiding principle, the frame-dependent kinematical quantities, e.g., the mean spin tensor, may be allowed to play an effective role as the constitutive variable in turbulence modeling.
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Affiliation(s)
- Y N Huang
- Institute of Fluid Mechanics, University of Erlangen-Nuremberg, D-91058 Erlangen, Germany.
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Wong KS, Huang YN, Gao S, Lam WW, Chan YL. Cerebrovascular disease among Chinese populations--recent epidemiological and neuroimaging studies. Hong Kong Med J 2001; 7:50-7. [PMID: 11406676] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/20/2023] Open
Abstract
Stroke mortality in individuals of Chinese descent has declined during the past decades, although the absolute number of patients with first-ever stroke is escalating. This review summarises recent epidemiological and imaging studies conducted among Chinese populations. Data indicating differences between Chinese and Caucasian ethnic groups in the pathophysiological mechanisms of stroke are highlighted, and the potential implications of these findings for prevention and management of stroke are discussed.
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Affiliation(s)
- K S Wong
- Division of Neurology, Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong
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Abstract
We studied 100 consecutive acute stroke patients in a Chinese population with transcranial Doppler and CT. Twenty patients had intracerebral hemorrhage and 14 patients did not have adequate temporal windows for transcranial Doppler examination. Among the remaining 66 patients, 22 patients (33%) had intracranial occlusive diseases and 3 (6%) had extracranial carotid stenosis. Our data showed that intracranial occlusive disease is the most commonly found vascular lesion in our acute stroke patients.
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Affiliation(s)
- K S Wong
- Department of Medicine, Chinese University of Hong Kong, Shatin
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Abstract
We studied 96 Chinese patients with TIAs using transcranial Doppler and duplex ultrasonography. We found intracranial stenosis or occlusion in 51% of cases and extracranial disease in 19% of cases. The most common intracranial lesion was stenosis of the terminal internal carotid artery or proximal middle cerebral artery, whereas the most common extracranial lesion was stenosis of the carotid bifurcation.
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Affiliation(s)
- Y N Huang
- Department of Neurology, Peking Union Medical College Hospital, Beijing, China
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Wong KS, Lam WW, Liang E, Huang YN, Chan YL, Kay R. Variability of magnetic resonance angiography and computed tomography angiography in grading middle cerebral artery stenosis. Stroke 1996; 27:1084-7. [PMID: 8650718 DOI: 10.1161/01.str.27.6.1084] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
BACKGROUND AND PURPOSE Magnetic resonance angiography and computed tomography angiography are new, noninvasive methods to provide images of the cerebral vasculature. The reliability of magnetic resonance angiography and computed tomography angiography when used to grade middle cerebral artery stenosis remains to be established. We sought to study the interobserver and intraobserver variabilities of magnetic resonance angiography and computed tomography angiography in grading middle cerebral artery stenosis. METHODS A total of 50 middle cerebral arteries in 25 patients were studied with magnetic resonance angiography and computed tomography angiography. All patients had a history of ischemic stroke. The films were read independently by two observers on separate occasions. Films were shown again to the same observer 4 weeks after the first reading. The degree of middle cerebral artery stenosis was categorized into four grades: normal/mild, moderate, severe, and occluded. The interobserver and intraobserver variabilities were calculated by the kappa statistic method. RESULTS Interobserver variability for grading middle cerebral artery stenosis was good (kappa = 0.78) for magnetic resonance angiography and moderate (kappa = 0.51) for computed tomography angiography. There was perfect agreement between two observers in 86% of the vessels shown in magnetic resonance angiography and in 76% of the vessels shown in computed tomography angiography. Intraobserver variability for both imaging methods was good, with the kappa value in the range of 0.70 to 0.76. CONCLUSIONS Our results suggest that according to our protocol, magnetic resonance angiography is more reliable than computed tomography angiography in grading middle cerebral artery stenosis.
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Affiliation(s)
- K S Wong
- Department of Medicine, Prince of Wales Hospital, Chinese University of Hong Kong, Shatin, Hong Kong.
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Abstract
There has been no report on the use of spiral computed tomography angiography (CTA) in the investigation of intracranial cerebral artery stenosis. A prospective pilot study was conducted to investigate the feasibility of CTA in the diagnosis of intracranial occlusive disease and its correlation with transcranial Doppler. With transcranial Doppler, 10 patients with acute ischaemic stroke with middle cerebral artery stenosis or occlusion were identified. There were seven middle cerebral artery stenoses and five middle cerebral artery occlusions. The CTA confirmed all diagnoses by transcranial Doppler except in one patient with middle cerebral artery occlusion in whom the embolus had probably propagated. The results showed that CTA is feasible and potentially useful in the diagnosis of middle cerebral artery occlusive disease. Further studies are required to assess its validity, sensitivity, and specificity in the diagnosis of middle cerebral artery occlusive disease.
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Affiliation(s)
- K S Wong
- Department of Medicine, Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong
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Huang YN, Wang YN, Zhao ZX. Internal friction and ultrasonic attenuation related to carriers in high-Tc superconductors. Phys Rev B Condens Matter 1994; 49:1320-1326. [PMID: 10010442 DOI: 10.1103/physrevb.49.1320] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Huang YN, Wang YN, Shen HM. Internal friction and dielectric loss related to domain walls. Phys Rev B Condens Matter 1992; 46:3290-3295. [PMID: 10004044 DOI: 10.1103/physrevb.46.3290] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Hallam TG, Huang YN. On the dynamics of a toxicant-individual system. J Theor Biol 1989; 141:65-72. [PMID: 2634161 DOI: 10.1016/s0022-5193(89)80008-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The dynamics of a toxicant-individual model where the individual is represented by von Bertalanffy dynamics and the uptake model component is one developed by Barber, Suarez & Lassiter is discussed. A sufficient condition for the death of an individual subjected to chemical stress is found. Another possible behavior of the system is an oscillatory mode of individual size and internal chemical concentration determined by a limit cycle. These fluctuations are a consequence of formulations of growth, maintenance, and the dose-response functions in the model system.
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Affiliation(s)
- T G Hallam
- Department of Mathematics, University of Tennessee, Knoxville 37996-1300
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Tang XF, Huang YN. P14 of somatosensory evoked potentials following median nerve stimulation in 5 patients with neurological lesions at various levels. Chin Med J (Engl) 1988; 101:98-104. [PMID: 3136989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
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Huang YN. [Finding of coronavirus particles in the feces of patients with diarrhea]. Zhonghua Liu Xing Bing Xue Za Zhi 1987; 8:25-7. [PMID: 3621315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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