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Tong H, Yang T, Xu S, Li X, Liu L, Zhou G, Yang S, Yin S, Li XJ, Li S. Huntington's Disease: Complex Pathogenesis and Therapeutic Strategies. Int J Mol Sci 2024; 25:3845. [PMID: 38612657 PMCID: PMC11011923 DOI: 10.3390/ijms25073845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Revised: 03/21/2024] [Accepted: 03/26/2024] [Indexed: 04/14/2024] Open
Abstract
Huntington's disease (HD) arises from the abnormal expansion of CAG repeats in the huntingtin gene (HTT), resulting in the production of the mutant huntingtin protein (mHTT) with a polyglutamine stretch in its N-terminus. The pathogenic mechanisms underlying HD are complex and not yet fully elucidated. However, mHTT forms aggregates and accumulates abnormally in neuronal nuclei and processes, leading to disruptions in multiple cellular functions. Although there is currently no effective curative treatment for HD, significant progress has been made in developing various therapeutic strategies to treat HD. In addition to drugs targeting the neuronal toxicity of mHTT, gene therapy approaches that aim to reduce the expression of the mutant HTT gene hold great promise for effective HD therapy. This review provides an overview of current HD treatments, discusses different therapeutic strategies, and aims to facilitate future therapeutic advancements in the field.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Xiao-Jiang Li
- Guangdong Key Laboratory of Non-Human Primate Research, Key Laboratory of CNS Regeneration (Ministry of Education), Guangdong-Hongkong-Macau Institute of CNS Regeneration, Jinan University, Guangzhou 510632, China; (H.T.); (T.Y.); (S.X.); (X.L.); (L.L.); (G.Z.); (S.Y.); (S.Y.)
| | - Shihua Li
- Guangdong Key Laboratory of Non-Human Primate Research, Key Laboratory of CNS Regeneration (Ministry of Education), Guangdong-Hongkong-Macau Institute of CNS Regeneration, Jinan University, Guangzhou 510632, China; (H.T.); (T.Y.); (S.X.); (X.L.); (L.L.); (G.Z.); (S.Y.); (S.Y.)
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Qiao J, Kang H, Ran Q, Tong H, Ma Q, Wang S, Zhang W, Wu H. Metabolic habitat imaging with hemodynamic heterogeneity predicts individual progression-free survival in high-grade glioma. Clin Radiol 2024:S0009-9260(24)00133-8. [PMID: 38582632 DOI: 10.1016/j.crad.2024.02.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 12/07/2023] [Accepted: 02/10/2024] [Indexed: 04/08/2024]
Abstract
AIM We design a feasibility study to obtain a set of metabolic-hemodynamic habitats for tackling tumor spatial metabolic patterns with hemodynamic information. MATERIALS AND METHODS Preoperative data from 69 high-grade gliomas (HGG) patients with subsequent histologic confirmation of HGG were prospectively collected (January 2016 to March 2020) after concurrent chemoradiotherapy (CCRT). Four vascular habitats were automatically segmented by multiparametric magnetic resonance imaging (MRI). The metabolic information, either at enhancing or edema tumor regions, was obtained by two neuroradiologists. The relative habitat volumes were used for weight estimation procedures for computing the coefficients of a linear regression model using weighted least squares (WLS) for metabolite semiquantifications (i.e. the Cho/NAA ratio and the Cho/Cr ratio) at vascular habitats. Multivariate Cox proportional hazard regression analyses are used to obtain the odds ratio (OR) and develop a nomogram using weighted estimators corresponding to each covariate derived from Cox regression coefficients. RESULTS There was a strongly correlation between perfusion indexes and the Cho/Cr ratio (rCBV, r=0.71) or Cho/NAA ratio (rCBV, r=0.66) at high-angiogenic enhancing tumor habitats (HAT) habitat. Compared isocitrate dehydrogenase (IDH) mutation to their wild type, the IDH wild type had significantly decreased Cho/Cr ratio (IDH mutation: Cho/Cr ratio = 2.44 ± 0.33, IDH wildtype: Cho/Cr ratio = 2.66 ± 0.36, p=0.02) and Cho/NAA ratio (IDH mutation: Cho/Cr ratio = 4.59 ± 0.61, IDH wildtype: Cho/Cr ratio = 4.99 ± 0.66, p=0.022) at the HAT. The C-index for the median progression-free survival (PFS) prediction was 0.769 for the Cho/NAA nomogram and 0.747 for the Cho/Cr nomogram through 1000 bootstrapping validation. CONCLUSIONS Our findings suggest that spatial metabolism combined with hemodynamic heterogeneity is associated with individual PFS to HGG patients post-CCRT.
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Affiliation(s)
- J Qiao
- Department of Radiology, Daping Hospital, Army Medical University, 10# Changjiangzhilu, Chongqing, 400024, China; Chongqing Clinical Research Centre of Imaging and Nuclear Medicine, Chongqing, 400042, China
| | - H Kang
- Department of Radiology, Daping Hospital, Army Medical University, 10# Changjiangzhilu, Chongqing, 400024, China; Chongqing Clinical Research Centre of Imaging and Nuclear Medicine, Chongqing, 400042, China
| | - Q Ran
- Department of Radiology, Daping Hospital, Army Medical University, 10# Changjiangzhilu, Chongqing, 400024, China; Chongqing Clinical Research Centre of Imaging and Nuclear Medicine, Chongqing, 400042, China
| | - H Tong
- Department of Radiology, Daping Hospital, Army Medical University, 10# Changjiangzhilu, Chongqing, 400024, China; Chongqing Clinical Research Centre of Imaging and Nuclear Medicine, Chongqing, 400042, China
| | - Q Ma
- Department of Pathology, Army Medical Center, PLA, Chongqing, 400042, China
| | - S Wang
- Department of Radiology, Daping Hospital, Army Medical University, 10# Changjiangzhilu, Chongqing, 400024, China; Chongqing Clinical Research Centre of Imaging and Nuclear Medicine, Chongqing, 400042, China.
| | - W Zhang
- Department of Radiology, Daping Hospital, Army Medical University, 10# Changjiangzhilu, Chongqing, 400024, China; Chongqing Clinical Research Centre of Imaging and Nuclear Medicine, Chongqing, 400042, China.
| | - H Wu
- Department of Radiology, Daping Hospital, Army Medical University, 10# Changjiangzhilu, Chongqing, 400024, China; Chongqing Clinical Research Centre of Imaging and Nuclear Medicine, Chongqing, 400042, China.
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Jia Q, Bai D, Zheng X, Zhu L, Ou K, Wang X, Tong H, Zhang Y, Wang J, Zeng J, Yan S, Li S, Li XJ, Yin P. Comparing HD knockin pigs and mice reveals the pathological role of IL-17. Cell Rep 2023; 42:113443. [PMID: 37979175 DOI: 10.1016/j.celrep.2023.113443] [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: 06/14/2023] [Revised: 09/09/2023] [Accepted: 10/30/2023] [Indexed: 11/20/2023] Open
Abstract
Our previous work has established a knockin (KI) pig model of Huntington's disease (HD) that can replicate the typical pathological features of HD, including selective striatal neuronal loss, reactive gliosis, and axonal degeneration. However, HD KI mice exhibit milder neuropathological phenotypes and lack overt neurodegeneration. By performing RNA sequencing to compare the gene expression profiles between HD KI pigs and mice, we find that genes related to interleukin-17 (IL-17) signaling are upregulated in the HD pig brains compared to the mouse brains. Delivery of IL-17 into the brain striatum of HD KI mice causes greater reactive gliosis and synaptic deficiency compared to HD KI mice that received PBS. These findings suggest that the upregulation of genes related to IL-17 signaling in HD pig brains contributes to severe glial pathology in HD and identify this as a potential therapeutic target for treating HD.
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Affiliation(s)
- Qingqing Jia
- Guangdong Key Laboratory of Non-human Primate Research, Key Laboratory of CNS Regeneration (Ministry of Education), Guangdong-Hongkong-Macau Institute of CNS Regeneration, Jinan University, Guangzhou 510632, China
| | - Dazhang Bai
- Guangdong Key Laboratory of Non-human Primate Research, Key Laboratory of CNS Regeneration (Ministry of Education), Guangdong-Hongkong-Macau Institute of CNS Regeneration, Jinan University, Guangzhou 510632, China; Department of Neurology, Affiliated Hospital of North Sichuan Medical College, Institute of Neurological Diseases, North Sichuan Medical College, Nanchong 637000, China
| | - Xiao Zheng
- Guangdong Key Laboratory of Non-human Primate Research, Key Laboratory of CNS Regeneration (Ministry of Education), Guangdong-Hongkong-Macau Institute of CNS Regeneration, Jinan University, Guangzhou 510632, China
| | - Longhong Zhu
- Guangdong Key Laboratory of Non-human Primate Research, Key Laboratory of CNS Regeneration (Ministry of Education), Guangdong-Hongkong-Macau Institute of CNS Regeneration, Jinan University, Guangzhou 510632, China
| | - Kaili Ou
- Guangdong Key Laboratory of Non-human Primate Research, Key Laboratory of CNS Regeneration (Ministry of Education), Guangdong-Hongkong-Macau Institute of CNS Regeneration, Jinan University, Guangzhou 510632, China
| | - Xiang Wang
- Guangdong Key Laboratory of Non-human Primate Research, Key Laboratory of CNS Regeneration (Ministry of Education), Guangdong-Hongkong-Macau Institute of CNS Regeneration, Jinan University, Guangzhou 510632, China
| | - Huichun Tong
- Guangdong Key Laboratory of Non-human Primate Research, Key Laboratory of CNS Regeneration (Ministry of Education), Guangdong-Hongkong-Macau Institute of CNS Regeneration, Jinan University, Guangzhou 510632, China
| | - Yiran Zhang
- Guangdong Key Laboratory of Non-human Primate Research, Key Laboratory of CNS Regeneration (Ministry of Education), Guangdong-Hongkong-Macau Institute of CNS Regeneration, Jinan University, Guangzhou 510632, China
| | - Jing Wang
- The Second Affiliated Hospital, The State Key Laboratory of Respiratory Disease, Guangdong Provincial Key Laboratory of Allergy and Clinical Immunology, Guangzhou Medical University, Guangzhou 510260, China
| | - Jun Zeng
- School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou 510260, China
| | - Sen Yan
- Guangdong Key Laboratory of Non-human Primate Research, Key Laboratory of CNS Regeneration (Ministry of Education), Guangdong-Hongkong-Macau Institute of CNS Regeneration, Jinan University, Guangzhou 510632, China.
| | - Shihua Li
- Guangdong Key Laboratory of Non-human Primate Research, Key Laboratory of CNS Regeneration (Ministry of Education), Guangdong-Hongkong-Macau Institute of CNS Regeneration, Jinan University, Guangzhou 510632, China.
| | - Xiao-Jiang Li
- Guangdong Key Laboratory of Non-human Primate Research, Key Laboratory of CNS Regeneration (Ministry of Education), Guangdong-Hongkong-Macau Institute of CNS Regeneration, Jinan University, Guangzhou 510632, China.
| | - Peng Yin
- Guangdong Key Laboratory of Non-human Primate Research, Key Laboratory of CNS Regeneration (Ministry of Education), Guangdong-Hongkong-Macau Institute of CNS Regeneration, Jinan University, Guangzhou 510632, China.
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Mai D, Wu A, Li R, Cai D, Tong H, Wang N, Tan J. Identification of hypervirulent Klebsiella pneumoniae based on biomarkers and Galleria mellonella infection model. BMC Microbiol 2023; 23:369. [PMID: 38030994 PMCID: PMC10685466 DOI: 10.1186/s12866-023-03124-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Accepted: 11/16/2023] [Indexed: 12/01/2023] Open
Abstract
BACKGROUND Currently, clinical laboratories lack an effective method to differentiate between classical Klebsiella pneumoniae (cKP) and hypervirulent Klebsiella pneumoniae (hvKP) strains, leading to delays in diagnosing and treating hvKP infections. Previous studies have identified peg-344, iroB, iucA, prmpA, prmpA2, and siderophores (SP) yields greater than 30 μg/ml as reliable markers for distinguishing hvKP from cKp strains. However, these diagnostic tests were conducted on a relatively small study population and lacked sufficient clinical data support. In this study, hvKP strains were identified by biomarker analysis and the Galleria mellonella model. Combined with in vitro and in vivo experiments, the reliability of clinical identification method of hvKP was verified, which provided an experimental basis for timely diagnosis of hvKP infection. RESULTS According to the clinical data, a total of 108 strains of hvKP were preliminary screened. Among them, 94 strains were further identified using PCR analysis of biomarkers and quantitative determination of SP. The high virulence of hvKP was subsequently confirmed through infection experiments on Galleria mellonella. Additionally, susceptibility testing revealed the identification of 58 carbapenem-resistant hvKP (CR-hvKP) strains and 36 carbapenem-sensitive hvKP (CS-hvKP) strains. By comparing molecular diagnostic indexes, molecular characteristics such as high SP production of CR-hvKP were found. CONCLUSION The combination of clinical data and molecular diagnostic index analysis effectively enables the identification of hvKP, particularly CR-hvKP. This study provides a scientific basis for accurate clinical identification and timely treatment of hvKP.
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Affiliation(s)
- Dongmei Mai
- Guangdong Provincial Second Hospital of Traditional Chinese Medicine, Guangzhou, China
| | - Anqi Wu
- Guangzhou Nanfang College, Guangzhou, China
| | - Ran Li
- Guangdong Provincial Second Hospital of Traditional Chinese Medicine, Guangzhou, China
| | - Donghao Cai
- Guangdong Provincial Second Hospital of Traditional Chinese Medicine, Guangzhou, China
| | - Huichun Tong
- Guangdong Key Laboratory of Non-Human Primate Research, Guangdong-Hongkong-Macau Institute of CNS RegenerationJinan University, Guangzhou, China
| | - Nan Wang
- Guangdong Provincial Second Hospital of Traditional Chinese Medicine, Guangzhou, China
| | - Junqing Tan
- Guangdong Provincial Second Hospital of Traditional Chinese Medicine, Guangzhou, China.
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Tong H, Yang T, Liu L, Li C, Sun Y, Jia Q, Qin Y, Chen L, Zhao X, Zhou G, Yan S, Li XJ, Li S. Aberrant splicing of mutant huntingtin in Huntington's disease knock-in pigs. Neurobiol Dis 2023; 187:106291. [PMID: 37716514 DOI: 10.1016/j.nbd.2023.106291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 09/04/2023] [Accepted: 09/11/2023] [Indexed: 09/18/2023] Open
Abstract
Huntington's disease (HD) is an autosomal-dominant inherited neurodegenerative disease caused by a CAG repeat expansion in exon1 of the huntingtin gene (HTT). This expansion leads to the production of N-terminal mutant huntingtin protein (mHtt) that contains an expanded polyglutamine tract, which is toxic to neurons and causes neurodegeneration. While the production of N-terminal mHtt can be mediated by proteolytic cleavage of full-length mHtt, abnormal splicing of exon1-intron1 of mHtt has also been identified in the brains of HD mice and patients. However, the proportion of aberrantly spliced exon1 mHTT in relation to normal mHTT exon remains to be defined. In this study, HTT exon1 production was examined in the HD knock-in (KI) pig model, which more closely recapitulates neuropathology seen in HD patient brains than HD mouse models. The study revealed that aberrant spliced HTT exon1 is also present in the brains of HD pigs, but it is expressed at a much lower level than the normally spliced HTT exon products. These findings suggest that careful consideration is needed when assessing the contribution of aberrantly spliced mHTT exon1 to HD pathogenesis, and further rigorous investigation is required.
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Affiliation(s)
- Huichun Tong
- Guangdong Key Laboratory of Non-human Primate Research, Guangdong-Hongkong-Macau Institute of CNS Regeneration, Jinan University, Guangzhou 510632, China
| | - Tianqi Yang
- Guangdong Key Laboratory of Non-human Primate Research, Guangdong-Hongkong-Macau Institute of CNS Regeneration, Jinan University, Guangzhou 510632, China
| | - Li Liu
- Guangdong Key Laboratory of Non-human Primate Research, Guangdong-Hongkong-Macau Institute of CNS Regeneration, Jinan University, Guangzhou 510632, China
| | - Caijuan Li
- Guangdong Key Laboratory of Non-human Primate Research, Guangdong-Hongkong-Macau Institute of CNS Regeneration, Jinan University, Guangzhou 510632, China
| | - Yize Sun
- Guangdong Key Laboratory of Non-human Primate Research, Guangdong-Hongkong-Macau Institute of CNS Regeneration, Jinan University, Guangzhou 510632, China
| | - Qingqing Jia
- Guangdong Key Laboratory of Non-human Primate Research, Guangdong-Hongkong-Macau Institute of CNS Regeneration, Jinan University, Guangzhou 510632, China
| | - Yiyang Qin
- Guangdong Key Laboratory of Non-human Primate Research, Guangdong-Hongkong-Macau Institute of CNS Regeneration, Jinan University, Guangzhou 510632, China
| | - Laiqiang Chen
- Guangdong Key Laboratory of Non-human Primate Research, Guangdong-Hongkong-Macau Institute of CNS Regeneration, Jinan University, Guangzhou 510632, China
| | - Xianxian Zhao
- Guangdong Key Laboratory of Non-human Primate Research, Guangdong-Hongkong-Macau Institute of CNS Regeneration, Jinan University, Guangzhou 510632, China
| | - Gongke Zhou
- Guangdong Key Laboratory of Non-human Primate Research, Guangdong-Hongkong-Macau Institute of CNS Regeneration, Jinan University, Guangzhou 510632, China
| | - Sen Yan
- Guangdong Key Laboratory of Non-human Primate Research, Guangdong-Hongkong-Macau Institute of CNS Regeneration, Jinan University, Guangzhou 510632, China.
| | - Xiao-Jiang Li
- Guangdong Key Laboratory of Non-human Primate Research, Guangdong-Hongkong-Macau Institute of CNS Regeneration, Jinan University, Guangzhou 510632, China.
| | - Shihua Li
- Guangdong Key Laboratory of Non-human Primate Research, Guangdong-Hongkong-Macau Institute of CNS Regeneration, Jinan University, Guangzhou 510632, China.
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Liu L, Tong H, Sun Y, Chen X, Yang T, Zhou G, Li XJ, Li S. Huntingtin Interacting Proteins and Pathological Implications. Int J Mol Sci 2023; 24:13060. [PMID: 37685866 PMCID: PMC10488016 DOI: 10.3390/ijms241713060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 08/08/2023] [Accepted: 08/18/2023] [Indexed: 09/10/2023] Open
Abstract
Huntington's disease (HD) is caused by an expansion of a CAG repeat in the gene that encodes the huntingtin protein (HTT). The exact function of HTT is still not fully understood, and previous studies have mainly focused on identifying proteins that interact with HTT to gain insights into its function. Numerous HTT-interacting proteins have been discovered, shedding light on the functions and structure of HTT. Most of these proteins interact with the N-terminal region of HTT. Among the various HTT-interacting proteins, huntingtin-associated protein 1 (HAP1) and HTT-interacting protein 1 (HIP1) have been extensively studied. Recent research has uncovered differences in the distribution of HAP1 in monkey and human brains compared with mice. This finding suggests that there may be species-specific variations in the regulation and function of HTT-interacting proteins. Understanding these differences could provide crucial insights into the development of HD. In this review, we will focus on the recent advancements in the study of HTT-interacting proteins, with particular attention to the differential distributions of HTT and HAP1 in larger animal models.
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Affiliation(s)
| | | | | | | | | | | | | | - Shihua Li
- Guangdong Key Laboratory of Non-Human Primate Research, Key Laboratory of Central Nervous System Regeneration (Ministry of Education), Guangdong-Hongkong-Macau Institute of CNS Regeneration, Jinan University, Guangzhou 510623, China; (L.L.); (H.T.); (Y.S.); (X.C.); (T.Y.); (G.Z.); (X.-J.L.)
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Zhang W, Chen S, Huang X, Tong H, Niu H, Lu L. Neuroprotective effect of a medium-chain triglyceride ketogenic diet on MPTP-induced Parkinson's disease mice: a combination of transcriptomics and metabolomics in the substantia nigra and fecal microbiome. Cell Death Discov 2023; 9:251. [PMID: 37460539 DOI: 10.1038/s41420-023-01549-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 06/18/2023] [Accepted: 07/05/2023] [Indexed: 07/20/2023] Open
Abstract
The ketogenic diet (KD) is a low carbohydrate and high-fat protein diet. It plays a protective role in neurodegenerative diseases by elevating the levels of ketone bodies in blood, regulating central and peripheral metabolism and mitochondrial functions, inhibiting neuroinflammation and oxidative stress, and altering the gut microbiota. However, studies on ketogenic therapy for Parkinson's disease (PD) are still in their infancy. Therefore, we examined the possible protective effect of KD in a 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-induced PD mouse model, examined the mouse gut microbiota and its metabolites, and performed transcriptomics and metabolomics on the substantia nigra of mice. Our results showed that a long-term medium-chain triglyceride KD (MCT-KD) significantly reduced MPTP-induced damage to dopaminergic (DA) neurons, exerted antioxidant stress through the PI3K/Akt/Nrf2 pathway, and reversed oxidative stress in DA neurons. The MCT-KD also reduced mitochondrial loss, promoted ATP production, and inhibited the activation of microglia to protect DA neurons in MPTP-induced PD mice. MCT-KD altered the gut microbiota and consequently changed the metabolism of substantia nigra neurons through gut microbiota metabolites. Compared to the MPTP group, MCT-KD increased the abundance of gut microbiota, including Blautia and Romboutsia. MCT-KD also affects purine metabolism in the substantia nigra pars compacta (SNpc) by altering fecal metabolites. This study shows that MCT-KD has multiple protective effects against PD.
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Affiliation(s)
- Wenlong Zhang
- Department of Neurology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong Province, 510120, China
| | - Shiyu Chen
- Department of General practice, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong Province, 510282, China
| | - Xingting Huang
- Department of Neurology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong Province, 510120, China
| | - Huichun Tong
- Guangdong Key Laboratory of Non-human Primate Research, Guangdong-Hongkong-Macau Institute of CNS Regeneration, Jinan University, Guangzhou, Guangdong Province, 510632, China
| | - Hongxin Niu
- General practice and Special medical service center, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong Province, 510282, China.
| | - Lingli Lu
- Department of General practice, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong Province, 510282, China.
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Tong H, Cong S, Fang LW, Fan J, Wang N, Zhao QQ, Wu J. [Performance of pulmonary function test in people aged 40 years and above in China, 2019-2020]. Zhonghua Liu Xing Bing Xue Za Zhi 2023; 44:727-734. [PMID: 37221060 DOI: 10.3760/cma.j.cn112338-20230202-00051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Objective: To understand the performance of pulmonary function tests in people aged ≥40 years and its changes in China, and provide evidence for the evaluation of the effect of chronic obstructive pulmonary disease (COPD) prevention and control in China. Methods: The subjects of the survey were from COPD surveillance during 2014-2015 and during 2019-2020, which covered 31 provinces (autonomous regions and municipalities) in China. The survey used multi-stage stratified cluster random sampling method, the trained investigators conducted face-to-face interview to know whether subjects had previous pulmonary function testing or not. Complex sampling weighting was used to estimate the rate of pulmonary function testing in people aged ≥40 years, and the pulmonary function testing rates of the two COPD surveillance periods were compared. Results: A total of 148 427 persons were included in the analysis, including 74 591 persons during 2014-2015 and 73 836 persons during 2019-2020. In 2019-2020, the pulmonary function testing rate in Chinese residents aged ≥40 years was 6.7% (95%CI: 5.2%-8.2%), the rate in men (8.1%, 95%CI: 6.7%-9.6%) was higher than that in women (5.4%, 95%CI: 3.7%- 7.0%), and the rate in urban residents (8.3%, 95%CI: 6.1%-10.5%) was higher than that in rural residents (4.4%, 95%CI: 3.8%-5.1%). The rate of pulmonary function testing increased with the increase of education level. During 2019-2020, the residents with history of chronic respiratory diseases had the highest rate of pulmonary function testing (21.2%, 95%CI: 16.8%-25.7%), followed by the residents with respiratory symptoms (15.1%, 95%CI: 11.8%-18.4%) , the pulmonary function testing rate in those who knew the name of chronic respiratory disease was higher than that in those who did not knew the name of respiratory disease, and the pulmonary function testing rate in former smokers was higher than that in current smokers and non-smokers. Those exposed to occupational dust and/or harmful gases had a higher rate of pulmonary function testing compared with those who were not exposed, and those who used polluted fuels indoors had a lower rate of pulmonary function testing than those who did not use polluted fuels indoors (all P<0.05). Compared with 2014-2015, the pulmonary function testing rate in residents aged ≥40 years in China increased by 1.9 percentage points during 2019-2020, and the rate of pulmonary function testing in groups with different characteristics all increased, and the rates of pulmonary function testing increased by 7.4 percentage points and 7.1 percentage points in residents with respiratory symptoms and in those with history of chronic respiratory diseases (all P<0.05). Conclusions: Compared with 2014-2015, the rate of pulmonary function testing increased in China during 2019-2020 and the increase in residents with history of chronic respiratory diseases and respiratory symptoms was relatively obvious, but the overall pulmonary function testing rate was still at a low level. Effective measures should be taken to further increase the rate of pulmonary function testing.
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Affiliation(s)
- H Tong
- National Center for Chronic and Non-communicable Disease Prevention and Control, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - S Cong
- National Center for Chronic and Non-communicable Disease Prevention and Control, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - L W Fang
- National Center for Chronic and Non-communicable Disease Prevention and Control, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - J Fan
- National Center for Chronic and Non-communicable Disease Prevention and Control, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - N Wang
- National Center for Chronic and Non-communicable Disease Prevention and Control, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - Q Q Zhao
- National Center for Chronic and Non-communicable Disease Prevention and Control, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - J Wu
- National Center for Chronic and Non-communicable Disease Prevention and Control, Chinese Center for Disease Control and Prevention, Beijing 100050, China
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Ye XH, He AJ, Yu JC, Tong H, Liu NH. [The perforator flap of ipsilateral nasolabial sulcus used to repair the defect after the eradication of nasal vestibular squamous cell carcinoma]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2023; 58:47-51. [PMID: 36603866 DOI: 10.3760/cma.j.cn115330-20220506-00249] [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: 01/07/2023]
Abstract
Objective: To investigate the feasibility of only surgical resection for nasal vestibular squamous cell carcinoma and the efficacy of perforator flap of ipsilateral nasolabial sulcus in repairing postoperative defects. Methods: The clinical data of 8 cases with squamous cell carcinoma of the nasal vestibule who admitted to Department of Facial Plastic and Reconstructive Surgery, Eye & ENT Hospital, Fudan University were analyzed, including 6 males and 2 females, aged from 38 to 75 years. The tumor of the nasal vestibule was eradicated in time after making definite diagnosis of lesions, then the perforators flap of the ipsilateral nasolabial sulcus was used for repairment, without performing further chemotherapy or radiotherapy after surgery. The tumor recurrence, facial appearance, nostril form, donor area scar, nasal ventilation function, and cutaneous sensation were evaluated after surgery. Descriptive analysis was used in this research. Results: There were 2 cases of stage T1 and 6 cases of stage T2 in 8 cases. After 32 to 45 months of following-up, no recurrence accurred and all the flaps survived well. However, there was about 2 mm necrosis of the transplanted flap in the lateral foot of the alar in one case, which was healed well by carrying out wound care after 10 d. And the dark color flap was occurred in another case, showing the flap's backflow trouble, yet it was improved with addressing timely during 5 d postoperation. Pincusion-like deformity of the transplanted flap occurred in 4 cases (50%), which subsided gradually after 6 months. The morphology of the anterior nostril was altered in 4 cases (50%), but there was no ventilation trouble and no need for addressment in any case. The postoperative facial appearance was rated as excellentor good with hidden scar in the donor site, and the sensation of the transplanted flaps was indistinct from the surrounding tissue after 3 months. Conclusions: Surgical resection of nasal vestibular squamous cell carcinoma with tumor stage T1-2 is a feasible treatment. And it is the one of the best reconstructive methods of the perforator flap of the ipsilateral nasolabial sulcus to repair the deformities after the surgery.
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Affiliation(s)
- X H Ye
- Department of Facial Plastic and Reconstructive Surgery, Eye & ENT Hospital, Fudan University, Shanghai 200031, China
| | - A J He
- Department of Facial Plastic and Reconstructive Surgery, Eye & ENT Hospital, Fudan University, Shanghai 200031, China
| | - J C Yu
- Department of Facial Plastic and Reconstructive Surgery, Eye & ENT Hospital, Fudan University, Shanghai 200031, China
| | - H Tong
- Department of Facial Plastic and Reconstructive Surgery, Eye & ENT Hospital, Fudan University, Shanghai 200031, China
| | - N H Liu
- Department of Facial Plastic and Reconstructive Surgery, Eye & ENT Hospital, Fudan University, Shanghai 200031, China
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Sun Y, Tong H, Yang T, Liu L, Li XJ, Li S. Insights into White Matter Defect in Huntington's Disease. Cells 2022; 11:3381. [PMID: 36359783 PMCID: PMC9656068 DOI: 10.3390/cells11213381] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [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: 10/04/2022] [Revised: 10/21/2022] [Accepted: 10/21/2022] [Indexed: 08/05/2023] Open
Abstract
Huntington's disease (HD) is an autosomal-dominant inherited progressive neurodegenerative disorder. It is caused by a CAG repeat expansion in the Huntingtin gene that is translated to an expanded polyglutamine (PolyQ) repeat in huntingtin protein. HD is characterized by mood swings, involuntary movement, and cognitive decline in the late disease stage. HD patients often die 15-20 years after disease onset. Currently, there is no cure for HD. Due to the striking neuronal loss in HD, most studies focused on the investigation of the predominantly neuronal degeneration in specific brain regions. However, the pathology of the white matter area in the brains of HD patients was also reported by clinical imaging studies, which showed white matter abnormalities even before the clinical onset of HD. Since oligodendrocytes form myelin sheaths around the axons in the brain, white matter lesions are likely attributed to alterations in myelin and oligodendrocyte-associated changes in HD. In this review, we summarized the evidence for white matter, myelin, and oligodendrocytes alterations that were previously observed in HD patients and animal models. We also discussed potential mechanisms for white matter changes and possible treatment to prevent glial dysfunction in HD.
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11
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Lai V, Tong H, Leung LT, Ho SY, Lam TH. Will heated tobacco products be banned in Hong Kong? Int J Tuberc Lung Dis 2021; 25:956-958. [PMID: 34686242 DOI: 10.5588/ijtld.21.0489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Affiliation(s)
- V Lai
- Hong Kong Council on Smoking and Health, Wanchai, Hong Kong, China
| | - H Tong
- Hong Kong Council on Smoking and Health, Wanchai, Hong Kong, China
| | - L T Leung
- Hong Kong Council on Smoking and Health, Wanchai, Hong Kong, China
| | - S Y Ho
- School of Public Health, The University of Hong Kong, Hong Kong, China
| | - T H Lam
- School of Public Health, The University of Hong Kong, Hong Kong, China
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Liu W, Liu W, Wang S, Tong H, Yuan J, Zou Z, Liu J, Yang D, Xie Z. Prevalence and Risk Factors Associated with Hyperuricemia in the Pearl River Delta, Guangdong Province, China. Risk Manag Healthc Policy 2021; 14:655-663. [PMID: 33623455 PMCID: PMC7896760 DOI: 10.2147/rmhp.s293913] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Accepted: 02/01/2021] [Indexed: 12/18/2022] Open
Abstract
Background In China, the prevalence of HUA in the Pearl River Delta (PRD) region of Guangdong Province has not been extensively investigated. Therefore, this study investigated the prevalence of HUA and its related factors among people aged 20–99 years in nine cities in the PRD. Materials and Methods We selected 6491 health check participants from 9 cities in the PRD and collected participants’ anthropometric and biochemical test results for a cross-sectional study. We included 6491 participants and assessed their blood pressure (BP), body mass index (BMI), total cholesterol (TC), triglycerides (TG), glucose (Glu) and serum uric acid (UA) to analyze the regional prevalence of HUA and its related factors. HUA was indicated when fasting serum UA level was >420 μmol/L in men and >360 μmol/L in women. Results Overall prevalence of HUA in our cohort was 34.05%; prevalence was higher in men than in women (41.53% vs 26.14%, P < 0.001). Characteristics associated with HUA were hypertension (odds ratio (OR), 5.506; 95% confidence interval (CI), 4.402–6.889), higher body mass index (BMI; OR: 1.746; 95% CI: 1.560–1.954), age 31–40 years (OR: 0.829; 95% CI: 0.706–0.973), age 61–70 years (OR: 1.434; 95% CI: 1.194–1.722) and age ≥71 years (OR: 1.742; 95% CI: 1.397–2.173). In all subjects, serum UA was positively correlated with Glu, TG and TC. After we adjusted for age, BMI and BP, multivariate logistic regression analysis showed that HUA risk factors were high TC (OR: 1.770; 95% CI: 1.459–2.147) and TG (OR: 1.961; 95% CI: 1.632–2.357) in men; and high Glu (OR: 1.508; 95% CI: 1.084–2.099), TC (OR: 1.341; 95% CI: 1.084–1.660) and TG (OR: 1.680; 95% CI: 1.290–2.187) in women. Conclusion The prevalence of HUA was relatively high in the PRD of Guangdong Province. Relevant governmental bodies should focus on early diagnosis, early treatment and early intervention.
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Affiliation(s)
- Weiqi Liu
- Department of Clinical Laboratory, Maternal and Children Health Care Hospital (Huzhong Hospital) of Huadu, Guangzhou, Guangdong, 510800, People's Republic of China
| | - Weiling Liu
- Department of Clinical Laboratory, Chancheng Centre Hospital, Foshan, Guangdong, 528000, People's Republic of China
| | - Shaoling Wang
- Department of Clinical Laboratory, Taishan People's Hospital, Jiangmen, Guangdong, 529200, People's Republic of China
| | - Huichun Tong
- Department of Clinical Laboratory, Boai Hospital of Zhongshan, Zhongshan, Guangdong, 528402, People's Republic of China
| | - Jianmin Yuan
- Department of Clinical Laboratory, Humen Hospital, Dongguan, Guangdong, 523899, People's Republic of China
| | - Zhenning Zou
- Department of Clinical Laboratory, Shenzhen Maternity & Child Healthcare Hospital, Shenzhen, Guangdong, 518028, People's Republic of China
| | - Jianwen Liu
- Department of Clinical Laboratory, Huiyang Sanhe Hospital, Huizhou, Guangdong, 516211, People's Republic of China
| | - Donghai Yang
- Department of Clinical Laboratory, Sanzhao Town Health Center, Jinwan District, Zhuhai, Guangdong, 519040, People's Republic of China
| | - Zhongxing Xie
- Department of Clinical Laboratory, The Second People's Hospital of Zhaoqing, Zhaoqing, Guangdong, 526060, People's Republic of China
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Bezerra Giordan L, Tong H, Atherton J, Ronto R, Chau J, Kaye D, Shaw T, Chow C, Laranjo L. Mobile Applications for Heart Failure Self-management: A Systematic Review. Heart Lung Circ 2021. [DOI: 10.1016/j.hlc.2021.06.434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Huang D, Tong H. Bilirubin crystals were detected in peripheral blood neutrophils in newborn with sepsis and G6PD deficiency. Int J Lab Hematol 2020; 43:e52-e53. [PMID: 33314593 DOI: 10.1111/ijlh.13360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 08/31/2020] [Accepted: 09/21/2020] [Indexed: 11/29/2022]
Affiliation(s)
- Daolian Huang
- Department of Clinical Laboratory, Zhongshan Boai Hospital affiliated with Southern Medical University, Zhongshan, China
| | - Huichun Tong
- Department of Clinical Laboratory, Zhongshan Boai Hospital affiliated with Southern Medical University, Zhongshan, China
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15
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Liu W, Zhou Y, Ma L, Tong H, Lu W, Zhang B, Bai Y, Zhang Y. 1653P Genomic profiling of Chinese sarcoma patients and exploration of biomarkers for immunotherapy: A retrospective analysis of over 600 samples. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.1879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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16
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Lukens M, Tong H, Samet J, Chen H, Shen W. Validating Omega 3 Screening Tool. J Acad Nutr Diet 2020. [DOI: 10.1016/j.jand.2020.06.122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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17
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Lin Y, Guo S, Tong H, Wang Y. P10 Paired Associative Magnetic Stimulation combined with Electroencephalogram in the Functional Connection of Right Frontal and Parietal Cortices. Clin Neurophysiol 2020. [DOI: 10.1016/j.clinph.2019.12.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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18
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Jiang L, Zheng Y, Li N, Chen X, Lu Z, Tong H, Yin N, Song T. Relapse rate after surgical treatment of maxillary hypoplasia in non-growing cleft patients: a systematic review and meta-analysis. Int J Oral Maxillofac Surg 2020; 49:421-431. [DOI: 10.1016/j.ijom.2019.08.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Revised: 08/22/2019] [Accepted: 08/23/2019] [Indexed: 11/30/2022]
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Fuller-Thomson E, Saab Z, Davison KM, Lin SL, Taler V, Kobayashi K, Tong H. Nutrition, Immigration and Health Determinants Are Linked to Verbal Fluency among Anglophone Adults in the Canadian Longitudinal Study on Aging (CLSA). J Nutr Health Aging 2020; 24:672-680. [PMID: 32510122 DOI: 10.1007/s12603-020-1402-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
OBJECTIVES Later-life cognitive impairment is an important health issue; however, little is known about the condition among diverse groups such as immigrants. This study aims to examine whether the healthy immigrant effect exists for verbal fluency, an indicator of cognitive functioning, among anglophone middle-aged and older adults in Canada. METHODS Using from the baseline data of the Canadian Longitudinal Study on Aging (CLSA), multiple linear regression was employed to compare associations among immigrants (recent and long-term) and Canadian-born residents without dementia for two verbal fluency tests, the Controlled Oral Word Association Test (COWAT) and the Animal Fluency (AF) task. Covariates included socioeconomic, physical health, and dietary intake. RESULTS Of 8,574 anglophone participants (85.7% Canada-born, 74.8% aged 45-65 years, 81.8% married, 81.9% with a post-secondary degree), long-term immigrants (settled in Canada >20 years) performed significantly better than Canadian-born residents for the COWAT (42.8 vs 40.9) but not the AF task (22.4 vs 22.4). Results of the multivariable adjusted regression analyses showed that long-term immigrants performed better than Canadian-born peers in both the COWAT (B=1.57, 95% CI: 0.80-2.34) and the AF test (B=0.57, 95% CI: 0.19-0.95), but this advantage was not observed among recent immigrants. Other factors associated with low verbal fluency performance included being single, socioeconomically disadvantaged, having hypertension, excess body fat, and consuming low amounts of pulses/nuts or fruit/vegetables. CONCLUSIONS Long-term immigrants had higher verbal fluency test scores than their Canadian-born counterparts. Immigration status, social, health and nutritional factors are important considerations for possible intervention and prevention strategies for cognitive impairment.
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Affiliation(s)
- E Fuller-Thomson
- Prof. Esme Fuller-Thomson, PhD, MSW. FIFSW, University of Toronto, 246 Bloor Street West, Toronto, Ontario M5S 1V4, Canada
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Zhou Y, Lu W, Zhang Y, Tong H, Liu W, Zhuang R, Guo H. Integrated genomic and transcriptomic analysis revealed mutagenic patterns of dedifferentiated liposarcoma and leiomyosarcoma in Chinese patients. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz433.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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21
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Omar MAA, Ao Y, Li M, He K, Xu L, Tong H, Jiang M, Li F. The functional difference of eight chitinase genes between male and female of the cotton mealybug, Phenacoccus solenopsis. Insect Mol Biol 2019; 28:550-567. [PMID: 30739379 DOI: 10.1111/imb.12572] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The cotton mealybug Phenacoccus solenopsis Tinsley (Hemiptera: Pseudococcidae) is a polyphagous insect that attacks tens of plant and causes substantial economic loss. Insect chitinases are required to remove the old cuticle to allow for continued growth and development. Though insect chitinases have been well studied in tens of insects, their functions in mealybug are still not addressed. Here, we sequenced the transcriptomes of adult males and females, from which eight chitinase genes were identified. We then used the method of rapid amplification of cDNA ends to amplify their full length. Phylogenetic analysis indicated that these genes clustered into five subgroups. Among which, group II PsCht2 had the longest transcript and was highly expressed at second instar nymph. PsCht10, PsCht3-3 and PsIDGF were highly expressed in the adult females, whereas PsCht4 and PsCht4-1 were significantly expressed at the male pupa and adult male. Next, we knocked down all eight chitinase genes by feeding the double-stranded RNA. Knockdown of PsCht4 or PsCht4-1 led to the failure of moult and, silencing PsCht5 resulted in pupation defect, while silencing PsCht10 led to small body size, suggesting these genes have essential roles in development and can be used as a potential target for pest control.
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Affiliation(s)
- Mohamed A A Omar
- Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects/Institute of Insect Science, Zhejiang University, Hangzhou, China
- Department of Plant Protection, Faculty of Agriculture (Saba Basha), Alexandria University, Alexandria, Egypt
| | - Y Ao
- Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects/Institute of Insect Science, Zhejiang University, Hangzhou, China
| | - M Li
- Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects/Institute of Insect Science, Zhejiang University, Hangzhou, China
| | - K He
- Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects/Institute of Insect Science, Zhejiang University, Hangzhou, China
| | - L Xu
- Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects/Institute of Insect Science, Zhejiang University, Hangzhou, China
| | - H Tong
- Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects/Institute of Insect Science, Zhejiang University, Hangzhou, China
| | - M Jiang
- Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects/Institute of Insect Science, Zhejiang University, Hangzhou, China
| | - F Li
- Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects/Institute of Insect Science, Zhejiang University, Hangzhou, China
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Wang X, Cai J, Shang N, Zhu L, Shao N, Dong X, Tong H. The carbon catabolite repressor CcpA mediates optimal competence development in Streptococcus oligofermentans through post-transcriptional regulation. Mol Microbiol 2019; 112:552-568. [PMID: 31074889 DOI: 10.1111/mmi.14274] [Citation(s) in RCA: 3] [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] [Accepted: 05/07/2019] [Indexed: 11/28/2022]
Abstract
Natural transformation increases the genetic diversity of bacteria, but is costly and must be strictly controlled. We previously found that deletion of ccpA, a key regulator of carbon catabolite repression (CCR), reduced transformation efficiency of Streptococcus oligofermentans, the current work further investigated the regulatory mechanisms of CcpA. The competence operon comCDE is subjected to basal and autoregulatory transcription. A luciferase reporter detected a transcriptional readthrough (TRT) from the upstream tRNAArg into the comCDE operon, which was induced by L -arginine. Insertion of the Escherichia coli T1T2 terminator downstream of tRNAArg abolished TRT, and reduced the basal comCDE transcription by 77% and also the transformation efficiency. Deletion of ccpA increased tRNAArg TRT and tRNAArg -comCDE polycistronic transcript by twofold. An in vitro transcription assay determined that CcpA promoted the transcription termination of tRNAArg TRT, and RNA EMSA and SPR assays detected equal binding affinity of CcpA to both the RNA and DNA of tRNAArg . These results indicate that CcpA controls the basal comCDE transcription by post-transcriptional actions. Overexpression of comDE or its phospho-mimicking mutant comDED58E reduced transformation efficiency, indicating that excessive ComE impairs competence development. CCR-regulated competence was further confirmed by higher tRNAArg TRT but lower transformation efficiency in galactose than in glucose.
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Affiliation(s)
- Xinhui Wang
- State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, No.1 Beichen West Road, Chaoyang District, Beijing, 100101, China.,University of Chinese Academy of Sciences, No.19A Yuquan Road, Shijingshan District, Beijing, 100049, China
| | - Jun Cai
- State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, No.1 Beichen West Road, Chaoyang District, Beijing, 100101, China
| | - Nan Shang
- State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, No.1 Beichen West Road, Chaoyang District, Beijing, 100101, China
| | - Lin Zhu
- State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, No.1 Beichen West Road, Chaoyang District, Beijing, 100101, China
| | - Nana Shao
- State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, No.1 Beichen West Road, Chaoyang District, Beijing, 100101, China
| | - Xiuzhu Dong
- State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, No.1 Beichen West Road, Chaoyang District, Beijing, 100101, China.,University of Chinese Academy of Sciences, No.19A Yuquan Road, Shijingshan District, Beijing, 100049, China
| | - Huichun Tong
- State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, No.1 Beichen West Road, Chaoyang District, Beijing, 100101, China.,University of Chinese Academy of Sciences, No.19A Yuquan Road, Shijingshan District, Beijing, 100049, China
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Abstract
OBJECTIVE To explore whether there was an increased secretion of cystatin C (Cys C) in twin pregnancy. METHODS Patients with a total of 281 singleton pregnancies (including 38 patients with preeclampsia) and 72 twin pregnancies, as well as 42 patients who were not pregnant, were included in this study. We tested levels of serum Cys C, creatinine, and uric acid, along with the estimated glomerular filtration rate (eGFR), in different groups. RESULTS The levels of serum Cys C in all 3 trimesters for women with twin pregnancy were much higher than those in the corresponding trimesters for women with singleton pregnancy. However, we observed little change in eGFR in the corresponding trimesters. Cys C/eGFR in the second and third trimester of twin pregnancy increased, compared with the corresponding trimesters of women with singleton pregnancy. Levels of serum Cys C were higher in the third trimester in women with twin pregnancy than that in patients with preeclampsia. Also, Cys C/eGFR in the third trimester of twin pregnancy was close to the level observed in patients with preeclampsia. CONCLUSIONS Increased secretion of Cys C could contribute to the elevated serum Cys C levels that we observed in twin pregnancy.
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Affiliation(s)
- Jianming Peng
- Laboratory Medicine Center, Nanfang Hospital, Southern Medical University, Guangzhou, China
- Medical Laboratory Department, Zhongshan Boai Hospital affiliated with Southern Medical University, Zhongshan, China
| | - Wen Wang
- Laboratory Medicine Center, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Lei Zheng
- Laboratory Medicine Center, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Yanfei Guan
- Medical Laboratory Department, Zhongshan Boai Hospital affiliated with Southern Medical University, Zhongshan, China
| | - Guicheng Ye
- Medical Laboratory Department, Zhongshan Boai Hospital affiliated with Southern Medical University, Zhongshan, China
| | - Huichun Tong
- Medical Laboratory Department, Zhongshan Boai Hospital affiliated with Southern Medical University, Zhongshan, China
| | - Ying Wang
- Medical Laboratory Department, Zhongshan Boai Hospital affiliated with Southern Medical University, Zhongshan, China
| | - Qian Wang
- Laboratory Medicine Center, Nanfang Hospital, Southern Medical University, Guangzhou, China
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Wu X, Meng X, Tan F, Jiao Z, Zhang X, Tong H, He X, Luo X, Xu P, Qu S. Regulatory Mechanism of miR-543-3p on GLT-1 in a Mouse Model of Parkinson's Disease. ACS Chem Neurosci 2019; 10:1791-1800. [PMID: 30676715 DOI: 10.1021/acschemneuro.8b00683] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Parkinson's disease (PD) features the degeneration and death of dopamine neurons in the substantia nigra pars compacta and the formation of Lewy bodies that contain α-synuclein. Among the numerous PD etiologies, glutamate excitotoxicity is a research hot spot, and glutamate transporters play key roles in this theory. It has been shown that the expression of the glutamate transporter is regulated by microRNAs. In this study, we found that the levels of expression and function of glutamate transporter type 1 (GLT-1) were significantly reduced and miR-543-3p was upregulated during the development of PD. Furthermore, our results indicated that GLT-1 plays an important role in the pathomechanism of PD. We found that miR-543-3p can suppress the expression and function of GLT-1 in MPP+-treated astrocytes and MPTP-treated mice. Inhibition of miR-543-3p can rescue the expression and function of GLT-1 and relieve dyskinesia in the PD model, which suggests that inhibition of miR-543-3p could serve as a potential therapeutic target for PD.
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Affiliation(s)
- Xiaojuan Wu
- Central Laboratory and Department of Neurology, Shunde Hospital, Southern Medical University (The First People’s Hospital of Shunde Foshan), Foshan, 528300, Guangdong, China
- Key Laboratory of Mental Health of the Ministry of Education, Southern Medical University, Guangzhou, 510515, Guangdong, China
| | - Xingjun Meng
- Central Laboratory and Department of Neurology, Shunde Hospital, Southern Medical University (The First People’s Hospital of Shunde Foshan), Foshan, 528300, Guangdong, China
- Key Laboratory of Mental Health of the Ministry of Education, Southern Medical University, Guangzhou, 510515, Guangdong, China
| | - Feng Tan
- Department of Neurology, Foshan Hospital of Traditional Chinese Medicine, Guangzhou University of Chinese Medicine, Foshan, 528000, Guangdong, China
| | - Zhigang Jiao
- Central Laboratory and Department of Neurology, Shunde Hospital, Southern Medical University (The First People’s Hospital of Shunde Foshan), Foshan, 528300, Guangdong, China
- Key Laboratory of Mental Health of the Ministry of Education, Southern Medical University, Guangzhou, 510515, Guangdong, China
| | - Xiuping Zhang
- Teaching Center of Experimental Medicine, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, Guangdong, China
| | - Huichun Tong
- Central Laboratory and Department of Neurology, Shunde Hospital, Southern Medical University (The First People’s Hospital of Shunde Foshan), Foshan, 528300, Guangdong, China
- Key Laboratory of Mental Health of the Ministry of Education, Southern Medical University, Guangzhou, 510515, Guangdong, China
| | - Xiaoliang He
- Central Laboratory and Department of Neurology, Shunde Hospital, Southern Medical University (The First People’s Hospital of Shunde Foshan), Foshan, 528300, Guangdong, China
- Key Laboratory of Mental Health of the Ministry of Education, Southern Medical University, Guangzhou, 510515, Guangdong, China
| | - Xiaodong Luo
- Department of Encephalopathy, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510006, Guangdong, China
| | - Pingyi Xu
- Department of Neurology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510030, Guangdong, China
| | - Shaogang Qu
- Central Laboratory and Department of Neurology, Shunde Hospital, Southern Medical University (The First People’s Hospital of Shunde Foshan), Foshan, 528300, Guangdong, China
- Key Laboratory of Mental Health of the Ministry of Education, Southern Medical University, Guangzhou, 510515, Guangdong, China
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Tong H, Wang X, Dong Y, Hu Q, Zhao Z, Zhu Y, Dong L, Bai F, Dong X. A Streptococcus aquaporin acts as peroxiporin for efflux of cellular hydrogen peroxide and alleviation of oxidative stress. J Biol Chem 2019; 294:4583-4595. [PMID: 30705089 DOI: 10.1074/jbc.ra118.006877] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [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: 11/27/2018] [Revised: 01/27/2019] [Indexed: 12/16/2022] Open
Abstract
Aquaporins (AQPs) are transmembrane proteins widely distributed in various organisms, and they facilitate bidirectional diffusion of water and uncharged solutes. The catalase-negative bacterium Streptococcus oligofermentans produces the highest H2O2 levels reported to date, which has to be exported to avoid oxidative stress. Here, we report that a S. oligofermentans aquaporin functions as a peroxiporin facilitating bidirectional transmembrane H2O2 transport. Knockout of this aquaporin homolog, So-AqpA, reduced H2O2 export by ∼50% and increased endogenous H2O2 retention, as indicated by the cellular H2O2 reporter HyPer. Heterologous expression of So-aqpA accelerated exogenous H2O2 influx into Saccharomyces cerevisiae and Escherichia coli cells, indicating that So-AqpA acts as an H2O2-transferring aquaporin. Alanine substitution revealed Phe-40 as a key residue for So-AqpA-mediated H2O2 transport. Northern blotting, qPCR, and luciferase reporter assays disclosed that H2O2 induces a >10-fold expression of So-aqpA Super-resolution imaging showed that H2O2 treatment increases So-AqpA protein molecules per cell by 1.6- to 3-fold. Inactivation of two redox-regulatory transcriptional repressors, PerR and MntR, reduced H2O2-induced So-aqpA expression to 1.8- and 4-fold, respectively. Electrophoretic mobility shift assays determined that MntR, but not PerR, binds to the So-aqpA promoter, indicating that MntR directly regulates H2O2-induced So-aqpA expression. Importantly, So-aqpA deletion decreased oxic growth and intraspecies competition and diminished the competitive advantages of S. oligofermentans over the caries pathogen Streptococcus mutans Of note, So-aqpA orthologs with the functionally important Phe-40 are present in all streptococci. Our work has uncovered an intrinsic, H2O2-inducible bacterial peroxiporin that has a key physiological role in H2O2 detoxification in S. oligofermentans.
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Affiliation(s)
- Huichun Tong
- From the State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, No. 1 Beichen West Road, Chaoyang District, Beijing 100101, China, .,University of Chinese Academy of Sciences, No. 19A Yuquan Road, Shijingshan District, Beijing 100049, China
| | - Xinhui Wang
- From the State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, No. 1 Beichen West Road, Chaoyang District, Beijing 100101, China.,University of Chinese Academy of Sciences, No. 19A Yuquan Road, Shijingshan District, Beijing 100049, China
| | - Yuzhu Dong
- From the State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, No. 1 Beichen West Road, Chaoyang District, Beijing 100101, China.,University of Chinese Academy of Sciences, No. 19A Yuquan Road, Shijingshan District, Beijing 100049, China
| | - Qingqing Hu
- From the State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, No. 1 Beichen West Road, Chaoyang District, Beijing 100101, China.,University of Chinese Academy of Sciences, No. 19A Yuquan Road, Shijingshan District, Beijing 100049, China
| | - Ziyi Zhao
- Biomedical Pioneering Innovation Center (BIOPIC), School of Life Sciences, Peking University, No. 5 Yiheyuan Road, Haidian District, Beijing 100871, China
| | - Yun Zhu
- Biomedical Pioneering Innovation Center (BIOPIC), School of Life Sciences, Peking University, No. 5 Yiheyuan Road, Haidian District, Beijing 100871, China
| | - Linxuan Dong
- From the State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, No. 1 Beichen West Road, Chaoyang District, Beijing 100101, China
| | - Fan Bai
- Biomedical Pioneering Innovation Center (BIOPIC), School of Life Sciences, Peking University, No. 5 Yiheyuan Road, Haidian District, Beijing 100871, China
| | - Xiuzhu Dong
- From the State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, No. 1 Beichen West Road, Chaoyang District, Beijing 100101, China, .,University of Chinese Academy of Sciences, No. 19A Yuquan Road, Shijingshan District, Beijing 100049, China
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26
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Affiliation(s)
- H. Tong
- Department of Mathematics; University of Manchester Institute of Science and Technology
| | - K. S. Lim
- Department of Mathematics; University of Manchester Institute of Science and Technology
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27
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Gao L, Li G, Xu Y, Tao ZZ, Deng Y, Xiang R, Tong H. [Epidemiological investigation and analysis of allergic rhinitis among 6-12 years old children in Zaoyang City of Hubei Province]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2018; 32:1641-1645. [PMID: 30400688 DOI: 10.13201/j.issn.1001-1781.2018.21.009] [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] [Received: 07/09/2018] [Indexed: 11/12/2022]
Abstract
Objective:The aim of this study is to investigate the epidemiological characteristics of allergic rhinitis(AR) among 6-12 years old children in Zaoyang.Method:All the children aged from 6 to 12 years old from 2 primary schools in Zaoyang in June 2018 were randomly selected as the research objects.The AR questionnaire was designed, and the epidemiological investigation was carried out. The results were analyzed by SPSS 20.0 software.Result:The prevalence rate of children aged 6-12 in Zaoyang was 13.7%,the prevalence rate of girls was 11.9%,and the prevalence rate of boys was 15.3%. The prevalence rate of boys was higher than that of girls,but the difference was not statistically significant(χ²=3.033,P>0.05).Univariate analysis showed that the factors related to AR were age(t=2.729,P<0.01), family history of allergic diseases (χ²=172.067,P<0.01),exposure to smoking or dust environment (χ²=43.091,P<0.01),exposure to smoking environment during pregnancy (χ²=6.09,P<0.05) and pet feeding history (χ²=9.473,P<0.01).Conclusion:The incidence of allergic rhinitis among 6-12 years old children in Zaoyang is high,age,family history of allergic diseasese,exposure to smoking or dust environment,exposure to smoking environment during pregnancy,and pet feeding history are risk factors for the incidence of allergic rhinitis in children.
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Affiliation(s)
- L Gao
- Department of Otorhinolaryngology Head and Neck Surgery,People's Hospital of Wuhan University,Wuhan,430060,China
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28
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Chen T, Ma HJ, Yang J, Liu W, Dai XT, Tong H. [An analysis of relative factors, bacteriological profile and antibiogram of neonatal sepsis]. Zhonghua Yu Fang Yi Xue Za Zhi 2018; 52:1023-1028. [PMID: 30392321 DOI: 10.3760/cma.j.issn.0253-9624.2018.10.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: This study was designed to identify the relative factors, bacteriological profile and their antibiotic susceptibility pattern of neonatal sepsis. Methods: A retrospective survey was conducted on the clinical information, pathogen identification and antibiotic sensitivity results of 425 newborns with neonatal sepsis admitted to Nanjing Maternity and Child Health Care Hospital from 2010 to 2017. Of the 425 positive blood-cultures, 148 (34.82%) were early-onset neonatal sepsis (EOS) and 277 (65.18%) were late-onset neonatal sepsis (LOS). Clinical information and pathogen identification were compared between EOS and LOS. Antibiotic sensitivity of gram negative organisms (G(-)) and gram positive organisms (G(+)) were also detected. Results: The rates of premature delivery (78.70%, n=218), low birth weights (67.15%, n=186) and cesarean delivery (59.57%, n=165) were significantly increased in LOS (P<0.05) compared with those rates in EOS, which were 41.89% (n=62), 37.84% (n=56) and 46.62% (n=69). Parturients fever (18.24%, n=27) and meconium like amniotic fluid (25.68%, n=38) were significantly increased in EOS (P<0.05) compared with those rates in LOS, which were 7.94% (n=22) and 5.42% (n=15). Among the identified pathogen, the incidence of G(-) and G(+) bacteria were 216 (50.83%) and 201 (47.29%) respectively, and the rest was Candida glabrata (1.88%, n=8). Escherichia coli 68 (16.00%) was the predominant isolate followed by Klebsiella pneumoniae (13.18%, n=56). The detection rate of Hemolytic staphylococcus (10.81%, n=16) was significantly increased in EOS (P<0.001) compared with LOS (1.44%, n=4). However, the incidence of Klebsiella pneumonia (5.88%, n=44) was higher in LOS (P=0.024) compared with EOS (8.11%, n=12). Most of the gram positive isolates exhibited high resistance to penicillin (90.32%-100.00%) and cephalosporin group antibiotics (25.00%-100.00%). Similarly, the majority of the gram negative isolates showed higher resistance to ampicillin (83.33%-100.00%), but susceptible to aminoglycosides (0-11.76%), quinolones (0-17.65%) and β-lactams (0-5.88%). Conclusion: Among the study population, the percent of preterm, low birth weight and cesarean section were higher in LOS while parturients fever and meconium-like amniotic fluid were higher in EOS. The pathogens with the highest detection rate were Escherichia coli and Klebsiella pneumoniae. The results of antibiotic susceptibility test showed that common pathogens had high resistance to commonly used antibacterial drugs.
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Affiliation(s)
- T Chen
- Medical Research Center, the Affiliated Obstetrics and Gynecology Hospital of Nanjing Medical University/Nanjing Maternity and Child Health Care Hospital, Nanjing 210004, China
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29
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Huang JB, Zeng GS, Li XS, Cheng XC, Tong H. Theoretical studies on bond dissociation enthalpies for model compounds of typical plastic polymers. ACTA ACUST UNITED AC 2018. [DOI: 10.1088/1755-1315/167/1/012029] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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30
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Tong H, Li XD, Wang ZD, Zhang LH, Tang CW. Gastrointestinal: Abdominal pain, vomiting, and fatal intra-abdominal hemorrhage in a patient with Sjögren's syndrome. J Gastroenterol Hepatol 2018; 33:1308. [PMID: 29607539 DOI: 10.1111/jgh.14109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- H Tong
- Department of Gastroenterology, West China Hospital, Sichuan University, Chengdu, China
| | - X-D Li
- Department of Gastroenterology, West China Hospital, Sichuan University, Chengdu, China
| | - Z-D Wang
- Department of Gastroenterology, West China Hospital, Sichuan University, Chengdu, China
| | - L-H Zhang
- Department of Gastroenterology, West China Hospital, Sichuan University, Chengdu, China
| | - C-W Tang
- Department of Gastroenterology, West China Hospital, Sichuan University, Chengdu, China
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31
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Tong H, Zhang X, Meng X, Lu L, Mai D, Qu S. Simvastatin Inhibits Activation of NADPH Oxidase/p38 MAPK Pathway and Enhances Expression of Antioxidant Protein in Parkinson Disease Models. Front Mol Neurosci 2018; 11:165. [PMID: 29872377 PMCID: PMC5972184 DOI: 10.3389/fnmol.2018.00165] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Accepted: 05/01/2018] [Indexed: 11/13/2022] Open
Abstract
Evidence suggests that oxidative stress is involved in the pathogenesis of Parkinson disease (PD). Simvastatin has been suggested to protect against oxidative stress in several diseases. However, the molecular mechanisms by which simvastatin protects against neuropathology and oxidative damage in PD are poorly elucidated. In this study, we aimed to investigate the potential neuroprotective effects of simvastatin owing to its anti-oxidative properties in 6-hydroxydopamine (6-OHDA)-treated SH-SY5Y cells and mice. The results of 2′,7′-dichlorodihydrofluorescein diacetate (DCFH-DA) fluorescence and CCK-8 assay demonstrated that simvastatin reduced intracellular reactive oxygen species (ROS) levels and reversed apoptosis in 6-OHDA-treated SH-SY5Y cells. Mechanistic studies revealed that 6-OHDA-induced activation of nicotinamide adenine dinucleotide phosphate (NADPH) oxidase/p38 mitogen-activated protein kinase (MAPK) pathway was inhibited and nuclear factor-κB (NF-κB) nuclear transcription decreased in SH-SY5Y cells after simvastatin treatment. Enhanced expression levels of superoxide dismutase (SOD), heme oxygenase-1 (HO-1), peroxisome proliferator-activated receptor-γ coactivator-1α (PGC-1α) and glutamate-cysteine ligase modifier subunit (GCLM) were observed after simvastatin treatment in 6-OHDA-treated SH-SY5Y cells. In vivo studies revealed that administration of simvastatin by gavage decreased limb-use asymmetry and apomorphine-induced rotations in 6-OHDA-lesioned mice. Simvastatin increased dopaminergic neurons and reduced protein tyrosine nitration and gliosis in the midbrain of PD mice. An inhibitory effect on activation of the NADPH oxidase/p38 MAPK was observed, and increased antioxidant protein expression in the midbrain were seen in the simvastatin plus 6-OHDA group compared with the 6-OHDA-lesioned group. Taken together, these results demonstrate that simvastatin might inhibit the activation of NADPH oxidase/p38 MAPK pathway, enhance antioxidant protein expression and protect against oxidative stress, thereby providing a novel antioxidant mechanism that has therapeutic validity.
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Affiliation(s)
- Huichun Tong
- Clinical Medicine Research Center, Shunde Hospital, Southern Medical University, Foshan, China
| | - Xiuping Zhang
- Teaching Center of Experimental Medicine, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Xingjun Meng
- Clinical Medicine Research Center, Shunde Hospital, Southern Medical University, Foshan, China
| | - Lingli Lu
- Clinical Medicine Research Center, Shunde Hospital, Southern Medical University, Foshan, China
| | - Dongmei Mai
- Clinical Medicine Research Center, Shunde Hospital, Southern Medical University, Foshan, China
| | - Shaogang Qu
- Clinical Medicine Research Center, Shunde Hospital, Southern Medical University, Foshan, China
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32
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Nazzal H, Tong H, Nixon P, Duggal M. Regenerative endodontic therapy for managing immature non-vital teeth: a national survey of UK paediatric dental specialists and trainees. Br Dent J 2018; 224:247-254. [DOI: 10.1038/sj.bdj.2018.122] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/25/2017] [Indexed: 12/18/2022]
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33
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Affiliation(s)
- L H Zhang
- Department of Gastroenterology, West China Hospital, Sichuan University, Chengdu, China.,West China School of Medicine, Sichuan University, Chengdu, China
| | - Y Tai
- Department of Gastroenterology, West China Hospital, Sichuan University, Chengdu, China
| | - H Tong
- Department of Gastroenterology, West China Hospital, Sichuan University, Chengdu, China
| | - X J Lei
- Department of Pathology, West China Hospital, Sichuan University, Chengdu, China
| | - C W Tang
- Department of Gastroenterology, West China Hospital, Sichuan University, Chengdu, China.,Division of Peptides Related with Human Diseases, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
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Lu L, Zhang X, Tong H, Zhang W, Xu P, Qu S. Central Administration of 5Z-7-Oxozeaenol Protects Experimental Autoimmune Encephalomyelitis Mice by Inhibiting Microglia Activation. Front Pharmacol 2017; 8:789. [PMID: 29163172 PMCID: PMC5675872 DOI: 10.3389/fphar.2017.00789] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2017] [Accepted: 10/18/2017] [Indexed: 12/28/2022] Open
Abstract
Transforming growth factor β-activated kinase 1 (TAK1), a vital upstream integrator of multiple pro-inflammatory signaling pathways, mediates the production of pro-inflammatory cytokines, chemokines, and adhesion molecules. Investigations targeting TAK1 provide new therapeutic options for chronic inflammatory disorders, autoimmune diseases, and cancer. However, the role and mechanism of the TAK1 inhibitor 5Z-7-oxozeaenol in treating autoimmune demyelinating diseases remain unclear. This work aimed to identify whether 5Z-7-oxozeaenol exerts neuroprotective effects on experimental autoimmune encephalomyelitis (EAE) in mice. Here, we demonstrate that 5Z-7-oxozeaenol efficiently alleviates the symptoms of EAE by decreasing the levels of pro-inflammatory cytokines in splenocytes and central nervous system, diminishing the number of activated microglia and inhibiting the p38MAPK, JNK, and ERK signaling pathways. Furthermore, we demonstrate that administration during the symptomatic time window is required for 5Z-7-oxozeaenol efficacy. These results suggest that TAK1 inhibition may provide a potent approach toward treating autoimmune demyelinating diseases.
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Affiliation(s)
- Lingli Lu
- Department of Neurology, Shunde Hospital, Southern Medical University, Foshan, China.,Department of Immunology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China.,Department of Neurology, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Xiuping Zhang
- Teaching Center of Experimental Medicine, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Huichun Tong
- Department of Neurology, Shunde Hospital, Southern Medical University, Foshan, China.,Department of Immunology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Wenlong Zhang
- Department of Neurology, Shunde Hospital, Southern Medical University, Foshan, China.,Department of Immunology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Pingyi Xu
- Department of Neurology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Shaogang Qu
- Department of Neurology, Shunde Hospital, Southern Medical University, Foshan, China.,Department of Immunology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
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Huang S, Tong H, Lei M, Zhou M, Guo W, Li G, Tang X, Li Z, Mo M, Zhang X, Chen X, Cen L, Wei L, Xiao Y, Li K, Huang Q, Yang X, Liu W, Zhang L, Qu S, Li S, Xu P. Astrocytic glutamatergic transporters are involved in Aβ-induced synaptic dysfunction. Brain Res 2017; 1678:129-137. [PMID: 29066369 DOI: 10.1016/j.brainres.2017.10.011] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2017] [Revised: 10/10/2017] [Accepted: 10/11/2017] [Indexed: 01/15/2023]
Abstract
In Alzheimer's disease (AD), dementia severity correlates most strongly with decreased synapse density in the hippocampus and cerebral cortex. Although studies in rodents have established that hippocampal long-term potentiation (LTP) is inhibited by soluble oligomers of beta-amyloid (Aβ), the synaptic mechanisms remain unclear. Here, field excitatory postsynaptic potentials (fEPSP) recordings were made in the CA1 region of mouse hippocampal slices. The medium of APP-expressing CHO cells, which contain soluble forms of Aβ including small oligomers, inhibited LTP and facilitated long-term depression (LTD), thus making the LTP/LTD curve shift toward the right. This phenomenon could be mimicked by the non-selective glutamate transporter inhibitor, DL-TBOA. More specifically, the Aβ impaired LTP and facilitated LTD were occluded by the selective astrocytic glutamate transporter inhibitors, TFB-TBOA. In cultured astrocytes, the Aβ oligomers also decrease astrocytic glutamate transporters (EAAT1, EAAT2) expression. We conclude that soluble Aβ oligomers decrease the activation of astrocytic glutamate transporters, thereby impairing synaptic plasticity.
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Affiliation(s)
- Shuxuan Huang
- Department of Neurology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510120, China
| | - Huichun Tong
- Clinical Medicine Research Centre, Shunde Hospital, Southern Medical University, Foshan, Guangdong 528300, China; Department of Neurology, Shunde Hospital, Southern Medical University, Foshan, Guangdong 528300, China
| | - Ming Lei
- Department of Neurology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510120, China; Department of Neurology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong 510080, China
| | - Miaomiao Zhou
- Department of Neurology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510120, China
| | - Wenyuan Guo
- Department of Neurology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510120, China
| | - Guihua Li
- Department of Neurology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510120, China
| | - Xiaolu Tang
- Department of Neurology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510120, China
| | - Zhe Li
- Department of Neurology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510120, China
| | - Mingshu Mo
- Department of Neurology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510120, China
| | - Xiuping Zhang
- Teaching Center of Experimental Medicine, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Xiang Chen
- Department of Neurology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510120, China
| | - Luan Cen
- Department of Neurology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510120, China
| | - Lei Wei
- Department of Neurology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong 510082, China
| | - Yousheng Xiao
- Department of Neurology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510120, China
| | - Kaiping Li
- State Key Laboratory of Respiratory Disease, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510120, China
| | - Qinghui Huang
- Department of Neurology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510120, China; State Key Laboratory of Respiratory Disease, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510120, China
| | - Xinling Yang
- Department of Neurology, The Third Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang 830011, China
| | - Weiguo Liu
- Department of Geroatric&Neurology, Affiliated Brain Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, China
| | - Li Zhang
- Department of Geroatric&Neurology, Affiliated Brain Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, China
| | - Shaogang Qu
- Clinical Medicine Research Centre, Shunde Hospital, Southern Medical University, Foshan, Guangdong 528300, China; Department of Neurology, Shunde Hospital, Southern Medical University, Foshan, Guangdong 528300, China.
| | - Shaomin Li
- Department of Neurology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510120, China; Ann Romney Center for Neurologic Disease, Brigham and Women's Hospital of Harvard Medical School, Boston, MA 02115, USA.
| | - Pingyi Xu
- Department of Neurology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510120, China.
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Chen Z, Wang X, Yang F, Hu Q, Tong H, Dong X. Molecular Insights into Hydrogen Peroxide-sensing Mechanism of the Metalloregulator MntR in Controlling Bacterial Resistance to Oxidative Stresses. J Biol Chem 2017; 292:5519-5531. [PMID: 28223356 DOI: 10.1074/jbc.m116.764126] [Citation(s) in RCA: 14] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2016] [Revised: 01/28/2017] [Indexed: 11/06/2022] Open
Abstract
Manganese contributes to anti-oxidative stress particularly in catalase-devoid bacteria, and DtxR family metalloregulators, through sensing cellular Mn2+ content, regulate its homeostasis. Here, we show that metalloregulator MntR (So-MntR) functions dually as Mn2+ and H2O2 sensors in mediating H2O2 resistance by an oral streptococcus. H2O2 disrupted So-MntR binding to Mn2+ transporter mntABC promoter and induced disulfide-linked dimerization of the protein. Mass spectrometry identified Cys-11/Cys-156 and Cys-11/Cys-11 disulfide-linked peptides in H2O2-treated So-MntR. Site mutagenesis of Cys-11 and Cys-156 and particularly Cys-11 abolished H2O2-induced disulfide-linked dimers and weakened H2O2 damage on So-MntR binding, indicating that H2O2 inactivates So-MntR via disulfide-linked dimerization. So-MntR C123S mutant was extremely sensitive to H2O2 oxidization in dimerization/oligomerization, probably because the mutagenesis caused a conformational change that facilitates Cys-11/Cys-156 disulfide linkage. Intermolecular Cys-11/Cys-11 disulfide was detected in C123S/C156S double mutant. Redox Western blot detected So-MntR oligomers in air-exposed cells but remarkably decreased upon H2O2 pulsing, suggesting a proteolysis of the disulfide-linked So-MntR oligomers. Remarkably, elevated C11S and C156S but much lower C123S proteins were detected in H2O2-pulsed cells, confirming Cys-11 and Cys-156 contributed to H2O2-induced oligomerization and degradation. Accordingly, in the C11S and C156S mutants, expression of mntABC and cellular Mn2+ decreased, but H2O2 susceptibility increased. In the C123S mutant, increased mntABC expression, cellular Mn2+ content, and manganese-mediated H2O2 survival were determined. Given the wide distribution of Cys-11 in streptococcal DtxR-like metalloregulators, the disclosed redox regulatory function and mechanism of So-MntR can be employed by the DtxR family proteins in bacterial resistance to oxidative stress.
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Affiliation(s)
- Zhaoyuan Chen
- From the State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, No.1 Beichen West Road, Chaoyang District, Beijing 100101, China.,School of Life Sciences, University of Chinese Academy of Sciences, No.19A Yuquan Road, Shijingshan District, Beijing 100049, China, and
| | - Xinhui Wang
- From the State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, No.1 Beichen West Road, Chaoyang District, Beijing 100101, China.,School of Life Sciences, University of Chinese Academy of Sciences, No.19A Yuquan Road, Shijingshan District, Beijing 100049, China, and
| | - Fan Yang
- MOE Key Laboratory of Bioinformatics, School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Qingqing Hu
- From the State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, No.1 Beichen West Road, Chaoyang District, Beijing 100101, China.,School of Life Sciences, University of Chinese Academy of Sciences, No.19A Yuquan Road, Shijingshan District, Beijing 100049, China, and
| | - Huichun Tong
- From the State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, No.1 Beichen West Road, Chaoyang District, Beijing 100101, China, .,School of Life Sciences, University of Chinese Academy of Sciences, No.19A Yuquan Road, Shijingshan District, Beijing 100049, China, and
| | - Xiuzhu Dong
- From the State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, No.1 Beichen West Road, Chaoyang District, Beijing 100101, China, .,School of Life Sciences, University of Chinese Academy of Sciences, No.19A Yuquan Road, Shijingshan District, Beijing 100049, China, and
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Kang XW, Tong H, Cao KQ, Mo QF, Li LW, Hong GL, Mo L, Li D, Zhao GJ, Lu ZQ. [Value of base excess in predicting the prognosis of patients with paraquat poisoning]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2017; 35:25-29. [PMID: 28241698 DOI: 10.3760/cma.j.issn.1001-9391.2017.01.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore prognostic factors of acute paraquat poisoning (APP) , analyze the correlation between base excess (BE) and plasma concentration of paraquat (C-PQ) and discuss BE level in evalua-tion of prognosis of acute paraquat poisoning patients. Methods: We retrospectively selected 84 APP patients who admitted to Emergency Intensive Care Unit (EICU) of our hospital from 2009.9.1 to 2015.8.31.Clinical data from 84 APP patients were analyzed. BE、C-PQ、time of gastric lavagesince ingestion、time of hemoperfusion since ingestion、severity index of paraquat poisoning (SIPP) 、white blood cell (WBC) 、percentage of neutrophils (N%) 、hemoglobin (HB) 、creatinine (Cr) 、alanine aminotransferase (ALT) 、aspartate aminotransferase (AST) 、partial pressure of oxygen (PaO(2)) 、partial pressure of carbon dioxide (PaCO(2)) and other laboratory parameters were measured. A total of 41 patients in non-survivors died during the 30 days after admission and 43 patients in survivors survived during the 30 days. The factors of prognosis in paraquat poisoining and the role of BE in evalu-ating prognosis was analyzed, as well as the correlation between BE and C-PQ. Results: 1.Logistic regression analyses showed BE、C-PQ、ALT、AST、Cr was of prognostic significance[odds ratio (OR) of BE: 0.511, 95%CI 0.267, 0.978; C-PQ:-=0.999, 95%CI 0.999, 1.000; both P<0.05] ; 2.The area under the receiver operating characteristic curve (ROC curve) of BE、C-PQ and prognosis were 0.775、0.927 respectively, BE≤-1.7 mmol/L was the best cut-off value, the sensitivity、specificity for predicting were 82.9%、62.8%, the evaluation value was lower to C-PQ>3 273.935 ng/ml (AUC 0.927, 78.0%、95.3%) ; 3.BE negative correlated with C-PQ[-1.100 (-4.100, -0.200) , -5.900(-8.650, -2.500) , both P<0.05]. (r=-0.4, P<0.01). Conclusion: These results suggest that BE may be useful for the prediction of prognosis in PQ poisoning and BE negative correlated with C-PQ.
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Affiliation(s)
- X W Kang
- Emergency Department of the First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China
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Abstract
We consider the model Zt = φ (0, k)+ φ(1, k)Zt–1 + at (k) whenever rk−1<Zt−1≦rk, 1≦k≦l, with r0 = –∞ and rl =∞. Here {φ (i, k); i = 0, 1; 1≦k≦l} is a sequence of real constants, not necessarily equal, and, for 1≦k≦l, {at(k), t≧1} is a sequence of i.i.d. random variables with mean 0 and with {at(k), t≧1} independent of {at(j), t≧1} for j ≠ k. Necessary and sufficient conditions on the constants {φ (i, k)} are given for the stationarity of the process. Least squares estimators of the model parameters are derived and, under mild regularity conditions, are shown to be strongly consistent and asymptotically normal.
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Abstract
The first part of the paper gives a multitude of essentially different representations of a stationary stochastic process. The second part gives a sufficient condition for the sum of two oscillatory processes to be again oscillatory.
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40
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Abstract
Using Akaike's information criterion, we have presented an objective procedure for the determination of the order of an ergodic Markov chain with a finite number of states. The procedure exploits the asymptotic properties of the maximum likelihood ratio statistics and Kullback and Leibler's mean information for the discrimination between two distributions. Numerical illustrations are given, using data from Bartlett (1966), Good and Gover (1967) and some weather records.
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Sheng YH, He Y, Hasnain SZ, Wang R, Tong H, Clarke DT, Lourie R, Oancea I, Wong KY, Lumley JW, Florin TH, Sutton P, Hooper JD, McMillan NA, McGuckin MA. MUC13 protects colorectal cancer cells from death by activating the NF-κB pathway and is a potential therapeutic target. Oncogene 2016; 36:700-713. [PMID: 27399336 PMCID: PMC5541270 DOI: 10.1038/onc.2016.241] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [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: 01/23/2016] [Revised: 05/24/2016] [Accepted: 06/01/2016] [Indexed: 02/07/2023]
Abstract
MUC13 is a transmembrane mucin glycoprotein that is over produced by many cancers, although its functions are not fully understood. Nuclear factor-κB (NF-κB) is a key transcription factor promoting cancer cell survival, but therapeutically targeting this pathway has proved difficult because NF-κB has pleiotropic functions. Here, we report that MUC13 prevents colorectal cancer cell death by promoting two distinct pathways of NF-kB activation, consequently upregulating BCL-XL. MUC13 promoted tumor necrosis factor (TNF)-induced NF-κB activation by interacting with TNFR1 and the E3 ligase, cIAP1, to increase ubiquitination of RIPK1. MUC13 also promoted genotoxin-induced NF-κB activation by increasing phosphorylation of ATM and SUMOylation of NF-κB essential modulator. Moreover, elevated expression of cytoplasmic MUC13 and NF-κB correlated with colorectal cancer progression and metastases. Our demonstration that MUC13 enhances NF-κB signaling in response to both TNF and DNA-damaging agents provides a new molecular target for specific inhibition of NF-κB activation. As proof of principle, silencing MUC13 sensitized colorectal cancer cells to killing by cytotoxic drugs and inflammatory signals and abolished chemotherapy-induced enrichment of CD133+ CD44+ cancer stem cells, slowed xenograft growth in mice, and synergized with 5-fluourouracil to induce tumor regression. Therefore, these data indicate that combining chemotherapy and MUC13 antagonism could improve the treatment of metastatic cancers.
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Affiliation(s)
- Y H Sheng
- Inflammatory Disease Biology and Therapeutics Group-Mater Research Institute, The University of Queensland, Translational Research Institute, Brisbane, Queensland, Australia
| | - Y He
- Cancer Biology Group, Mater Research Institute-The University of Queensland, Translational Research Institute, Brisbane, Queensland, Australia
| | - S Z Hasnain
- Inflammatory Disease Biology and Therapeutics Group-Mater Research Institute, The University of Queensland, Translational Research Institute, Brisbane, Queensland, Australia
| | - R Wang
- Inflammatory Disease Biology and Therapeutics Group-Mater Research Institute, The University of Queensland, Translational Research Institute, Brisbane, Queensland, Australia
| | - H Tong
- Inflammatory Disease Biology and Therapeutics Group-Mater Research Institute, The University of Queensland, Translational Research Institute, Brisbane, Queensland, Australia
| | - D T Clarke
- Molecular Basis of Disease Program, School of Medical Sciences, Griffith University, Gold Coast Campus, Southport, Queensland, Australia
| | - R Lourie
- Inflammatory Disease Biology and Therapeutics Group-Mater Research Institute, The University of Queensland, Translational Research Institute, Brisbane, Queensland, Australia.,Inflammatory Bowel Diseases Group, Mater Research Institute-The University of Queensland, Translational Research Institute, Brisbane, Queensland, Australia
| | - I Oancea
- Inflammatory Disease Biology and Therapeutics Group-Mater Research Institute, The University of Queensland, Translational Research Institute, Brisbane, Queensland, Australia.,Inflammatory Bowel Diseases Group, Mater Research Institute-The University of Queensland, Translational Research Institute, Brisbane, Queensland, Australia
| | - K Y Wong
- Inflammatory Disease Biology and Therapeutics Group-Mater Research Institute, The University of Queensland, Translational Research Institute, Brisbane, Queensland, Australia
| | - J W Lumley
- Wesley Hospital, Auchenflower, Australia
| | - T H Florin
- Inflammatory Bowel Diseases Group, Mater Research Institute-The University of Queensland, Translational Research Institute, Brisbane, Queensland, Australia
| | - P Sutton
- Mucosal Immunology, Murdoch Children's Research Institute, Royal Children's Hospital, Parkville, Melbourne, Victoria, Australia.,Centre for Animal Biotechnology, School of Veterinary and Agricultural Science, University of Melbourne, Melbourne, Victoria, Australia.,Department of Paediatrics, University of Melbourne, Victoria, Australia
| | - J D Hooper
- Cancer Biology Group, Mater Research Institute-The University of Queensland, Translational Research Institute, Brisbane, Queensland, Australia
| | - N A McMillan
- Molecular Basis of Disease Program, School of Medical Sciences, Griffith University, Gold Coast Campus, Southport, Queensland, Australia
| | - M A McGuckin
- Inflammatory Disease Biology and Therapeutics Group-Mater Research Institute, The University of Queensland, Translational Research Institute, Brisbane, Queensland, Australia
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Abstract
We have furnished further examples on the connection between some standard one-dimensional chaotic deterministic models and stochastic time series models via time reversal.
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43
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Abstract
We have shown that within the setting of a difference equation it is possible to link ergodicity with stability via the physical notion of energy in the form of a Lyapunov function.
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Tong H, Jin Y, Xu Y, Zou B, Ye H, Wu H, Kumar S, Pitman JL, Zhou G, Song Q. Prenatal diagnosis of trisomy 21, 18 and 13 by quantitative pyrosequencing of segmental duplications. Clin Genet 2016; 90:451-455. [PMID: 26948280 DOI: 10.1111/cge.12772] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2015] [Revised: 03/02/2016] [Accepted: 03/02/2016] [Indexed: 01/22/2023]
Abstract
Chromosomal aberration mostly occurs in chromosomes 21, 18 and 13, with an incidence approximately 1 out of 160 live births in humans, therefore making prenatal diagnosis necessary in clinics. Current methods have drawbacks such as time consuming, high cost, complicated operations and low sensitivity. In this paper, a novel method for rapid and accurate prenatal diagnosis of aneuploidy is proposed based on pyrosequencing, which quantitatively detects the peak height ratio (PHR) of different bases of segmental duplication. A direct polymerase chain reaction (PCR) approach was undertaken, where a small volume of amniotic fluid was used as the starting material without DNA extraction. Single-stranded DNA was prepared from PCR products and subsequently analyzed using pyrosequencing. The PHR between target and reference chromosome of 2.2 for euploid and 3:2 for a trisomy fetus were used as reference. The reference intervals and z scores were calculated for discrimination of aneuploidy. A total of 132 samples were collected, within trisomy 21 (n = 11), trisomy 18 (n = 3), trisomy 13 (n = 2), and unaffected controls (n = 116). A set of six segmental duplications were chosen for analysis. This method had consistent results with karyotyping analysis, a correct diagnosis with 100% sensitivity and 99.9% specificity.
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Affiliation(s)
- H Tong
- Key Laboratory of Drug Quality Control and Pharmacovigilance of Ministry of Education, China Pharmaceutical University, Nanjing, China
| | - Y Jin
- Key Laboratory of Drug Quality Control and Pharmacovigilance of Ministry of Education, China Pharmaceutical University, Nanjing, China
| | - Y Xu
- Key Laboratory of Drug Quality Control and Pharmacovigilance of Ministry of Education, China Pharmaceutical University, Nanjing, China
| | - B Zou
- Department of pharmacology, Jinling Hospital, Medical School of Nanjing University, Nanjing, China
| | - H Ye
- Department of pharmacology, Jinling Hospital, Medical School of Nanjing University, Nanjing, China
| | - H Wu
- Department of pharmacology, Jinling Hospital, Medical School of Nanjing University, Nanjing, China
| | - S Kumar
- School of Biological Sciences, Victoria University of Wellington, Wellington, New Zealand
| | - J L Pitman
- School of Biological Sciences, Victoria University of Wellington, Wellington, New Zealand
| | - G Zhou
- Key Laboratory of Drug Quality Control and Pharmacovigilance of Ministry of Education, China Pharmaceutical University, Nanjing, China. .,Department of pharmacology, Jinling Hospital, Medical School of Nanjing University, Nanjing, China.
| | - Q Song
- Key Laboratory of Drug Quality Control and Pharmacovigilance of Ministry of Education, China Pharmaceutical University, Nanjing, China. .,Department of pharmacology, Jinling Hospital, Medical School of Nanjing University, Nanjing, China.
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Fitzgerald C, Hosny NA, Tong H, Seville PC, Gallimore PJ, Davidson NM, Athanasiadis A, Botchway SW, Ward AD, Kalberer M, Kuimova MK, Pope FD. Fluorescence lifetime imaging of optically levitated aerosol: a technique to quantitatively map the viscosity of suspended aerosol particles. Phys Chem Chem Phys 2016; 18:21710-9. [DOI: 10.1039/c6cp03674k] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A technique to measure the viscosity of stably levitated single micron-sized aerosol particles.
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Affiliation(s)
- C. Fitzgerald
- Department of Chemistry
- University of Cambridge
- Cambridge
- UK
| | - N. A. Hosny
- Department of Chemistry
- Imperial College London
- London
- UK
| | - H. Tong
- Department of Chemistry
- University of Cambridge
- Cambridge
- UK
| | - P. C. Seville
- School of Pharmacy and Biomedical Sciences
- University of Central Lancashire
- Preston
- UK
| | | | - N. M. Davidson
- School of Geography
- Earth and Environmental Sciences
- University of Birmingham
- Birmingham
- UK
| | | | - S. W. Botchway
- The Science and Technology Facilities Council
- Rutherford Appleton Laboratory
- Research Complex at Harwell
- Oxfordshire
- UK
| | - A. D. Ward
- The Science and Technology Facilities Council
- Rutherford Appleton Laboratory
- Research Complex at Harwell
- Oxfordshire
- UK
| | - M. Kalberer
- Department of Chemistry
- University of Cambridge
- Cambridge
- UK
| | - M. K. Kuimova
- Department of Chemistry
- Imperial College London
- London
- UK
| | - F. D. Pope
- School of Geography
- Earth and Environmental Sciences
- University of Birmingham
- Birmingham
- UK
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Bao X, de Soet JJ, Tong H, Gao X, He L, van Loveren C, Deng DM. Streptococcus oligofermentans Inhibits Streptococcus mutans in Biofilms at Both Neutral pH and Cariogenic Conditions. PLoS One 2015; 10:e0130962. [PMID: 26114758 PMCID: PMC4483167 DOI: 10.1371/journal.pone.0130962] [Citation(s) in RCA: 13] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2014] [Accepted: 05/27/2015] [Indexed: 02/05/2023] Open
Abstract
Homeostasis of oral microbiota can be maintained through microbial interactions. Previous studies showed that Streptococcus oligofermentans, a non-mutans streptococci frequently isolated from caries-free subjects, inhibited the cariogenic Streptococcus mutans by the production of hydrogen peroxide (HP). Since pH is a critical factor in caries formation, we aimed to study the influence of pH on the competition between S. oligofermentans and S. mutans in biofilms. To this end, S. mutans and S. oligofermentans were inoculated alone or mixed at 1:1 ratio in buffered biofilm medium in a 96-well active attachment model. The single- and dual-species biofilms were grown under either constantly neutral pH or pH-cycling conditions. The latter includes two cycles of 8 h neutral pH and 16 h pH 5.5, used to mimic cariogenic condition. The 48 h biofilms were analysed for the viable cell counts, lactate and HP production. The last two measurements were carried out after incubating the 48 h biofilms in buffers supplemented with 1% glucose (pH 7.0) for 4 h. The results showed that S. oligofermentans inhibited the growth of S. mutans in dual-species biofilms under both tested pH conditions. The lactic acid production of dual-species biofilms was significantly lower than that of single-species S. mutans biofilms. Moreover, dual-species and single-species S. oligofermentans biofilms grown under pH-cycling conditions (with a 16 h low pH period) produced a significantly higher amount of HP than those grown under constantly neutral pH. In conclusion, S. oligofermentans inhibited S. mutans in biofilms not only under neutral pH, but also under pH-cycling conditions, likely through HP production. S. oligofermentans may be a compelling probiotic candidate against caries.
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Affiliation(s)
- Xudong Bao
- Department of Cariology and Endodontology, Peking University School and Hospital of Stomatology, Beijing, China
- Department of Preventive Dentistry, Academic Centre for Dentistry Amsterdam, University of Amsterdam and VU University Amsterdam, Amsterdam, The Netherlands
| | - Johannes Jacob de Soet
- Department of Preventive Dentistry, Academic Centre for Dentistry Amsterdam, University of Amsterdam and VU University Amsterdam, Amsterdam, The Netherlands
| | - Huichun Tong
- State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
| | - Xuejun Gao
- Department of Cariology and Endodontology, Peking University School and Hospital of Stomatology, Beijing, China
| | - Libang He
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Cor van Loveren
- Department of Preventive Dentistry, Academic Centre for Dentistry Amsterdam, University of Amsterdam and VU University Amsterdam, Amsterdam, The Netherlands
| | - Dong Mei Deng
- Department of Preventive Dentistry, Academic Centre for Dentistry Amsterdam, University of Amsterdam and VU University Amsterdam, Amsterdam, The Netherlands
- * E-mail:
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Hu C, Tong H, Cai G, Teboul J, Yan J, Lv X, Xu Q, Chen J, Rao Q, Yan M. Bioreactance-based passive leg raising test can predict fluid responsiveness in patients with sepsis. Crit Care 2015. [PMCID: PMC4471838 DOI: 10.1186/cc14257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Sun Q, Jia X, Gao J, Mou W, Tong H, Wen X, Tian Y. Association of serum homocysteine levels with the severity and calcification of coronary atherosclerotic plaques detected by coronary CT angiography. INT ANGIOL 2014; 33:316-323. [PMID: 25056163] [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: 06/03/2023]
Abstract
AIM In this study, we aim to evaluate the association of risk factors including homocysteine (Hcy) with the severity and burden of coronary atherosclerotic plaques detected by computed tomography angiography (CTA). METHODS Six hundred fifty-nine subjects who underwent CTA for the assessment of coronary artery disease (CAD) were studied. All the subjects enrolled had no clinical cardiovascular disease symptoms. Logistic regression showed apart from age, hypertension, smoking, triglyceride, low-density lipoprotein (LDL) cholesterol, and total bilirubin, Hcy was an independently risk factor of the severity of coronary disease. And Hcy was also found an independent predictor for the presence of calcified plaque. When the participants were divided into 4 groups according to serum Hcy quartiles (Q1-Q4 groups), both the percentage of patients with >50% stenosis and the percentage of patients with calcified plaque were higher in Q4 compared to other groups. The OR of Hcy (>15 µmol/L) for >50% stenosis was 2.212 (95% CI=1.119 to 4.375, P=0.022) and the OR for Hcy (>15 µmol/L) for calcification was 1.668 (95% CI=1.030 to 2.699, P=0.037) respectively. CONCLUSION Our study shows Hcy is independently associated with both the severity and calcified plaque detected by CTA. Hcy may provide additional information about CAD in the subjects without clinical symptoms.
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Affiliation(s)
- Q Sun
- Department of Clinical Biochemistry, Chinese PLA General Hospital, Beijing, China -
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Ramírez E, Cabañas R, Laserna LS, Fiandor A, Tong H, Prior N, Calderón O, Medrano N, Bobolea I, Frías J, Quirce S. Proton pump inhibitors are associated with hypersensitivity reactions to drugs in hospitalized patients: a nested case-control in a retrospective cohort study. Clin Exp Allergy 2013; 43:344-52. [PMID: 23414543 DOI: 10.1111/cea.12034] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2012] [Revised: 08/27/2012] [Accepted: 08/29/2012] [Indexed: 11/30/2022]
Abstract
BACKGROUND Previous research has shown that gastric acid suppression by antacid drugs can promote allergic reactions to acid-labile food proteins. No data are available about whether antacid drugs can promote drug hypersensitivity reactions. The most potent and longer lasting inhibition of gastric secretion is provided by proton pump inhibitors (PPIs). We hypothesized that gastric acid suppression by proton pump inhibitors could be causative of drug hypersensitivity reactions during hospitalization. OBJECTIVE To estimate the risk of developing drug hypersensitivity reactions during the hospitalization of patients treated with proton pump inhibitors, and other associated factors. METHODS A nested case-control in a retrospective cohort study of hospitalized patients from September 2008 to December 2010 (70 771 admissions) was conducted using the registry of cases of interconsultations to the Allergy Department (161 confirmed cases of drug hypersensitivity reactions). A total of 318 controls were matched by first drug suspected in the hypersensitivity reaction, time of admission, age, gender and hospitalization wards. RESULTS The relative risk of drug hypersensitivity reaction occurrence during hospitalization of patients treated with PPIs compared with those not treated in the period of study was significant (RR: 3.97; 95% CI: 1.97-8.29). After controlling for confounders in the nested case-control cohort, the use of PPIs persists as a predisposing factor (OR: 4.35; 95% CI: 2-9.45). Personal history of drug allergy and a long hospitalization time were other predisposing factors of drug hypersensitivity reactions (DHRs). The hazard that a DHR has occurred during PPI treatment was 3.7% per day. The hazard for immediate or accelerated reactions was 1.706 (P = 0.003) times that of delayed reactions. CONCLUSION AND CLINICAL RELEVANCE In hospitalized patients, the use of proton pump inhibitors was associated with a significant increase risk of drug hypersensitivity reactions along with a personal history of drug allergies and long hospitalization time.
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Affiliation(s)
- E Ramírez
- Department of Clinical Pharmacology, Hospital La Paz Health Research Institute (IdiPAZ), School of Medicine, Universidad Autónoma de Madrid, Madrid, Spain.
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Tong H, Guo S, Zhang Z, Sun J. EFFECTS OF ISO-OSMOTIC CA(NO3)2 AND NACL STRESS ON IONIC CONTENTS IN DIFFERENT ORGANS OF CUCUMBER SEEDLINGS. ACTA ACUST UNITED AC 2013. [DOI: 10.17660/actahortic.2013.1004.21] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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