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Zhou M, Li X, Wang X, Deng N, Cai Y, Tan Z. The dysfunction in intestinal microorganisms and enzyme activity as significant contributors to diarrhea with kidney-yang deficiency syndrome. Front Microbiol 2024; 14:1324938. [PMID: 38264481 PMCID: PMC10803573 DOI: 10.3389/fmicb.2023.1324938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Accepted: 12/19/2023] [Indexed: 01/25/2024] Open
Abstract
Object To investigate the pathogenesis of diarrhea with kidney-yang deficiency syndrome by examining characteristic changes in intestinal microorganisms, enzyme activities, oxidative stress, and metabolism indices. Methods Twenty mice were randomly and equally divided into control group (NC) and model group (NM). Mice in NM group received adenine suspension at a dosage of 50 mg/(kg⋅day) by gavage, 0.4 mL/time, once a day for 14 days, and Folium sennae decoction at a dosage of 10 g/(kg⋅day) by gavage, 0.4 mL/time, once a day for 7 days, starting on 8th day. Mice in NC group were administered an equivalent amount of sterile water by gavage once a day for 7 days, and twice a day from the 8th day. After modeling, assessments encompassed microbial culture, organ index calculation, microbial and enzyme activity detection, malondialdehyde (MDA) content determination, superoxide dismutase (SOD) activity, blood biochemical tests, and observation of kidney tissue pathological changes. Results The results showed that in NM group, a reduction in the number of Lactobacillus and Bifidobacteria was noted, accompanied by an increase in the number of bacteria and E. coli. Xylanase activity in the intestinal contents and mucosa, protease activity in the intestinal mucosa, and intestinal mucosa microbial activity were diminished. Conversely, the activities of amylase, sucrase, and lactase increased in intestinal mucosa. Additionally, there was an elevation in the level of MDA. Renal tubular dilatation and inflammatory cell infiltration were observed in the renal interstitium. Conclusion These dysfunctions in intestinal microorganisms and enzyme activities suggest potential involvement in diarrhea with kidney-yang deficiency syndrome.
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Affiliation(s)
- Mengsi Zhou
- College of Chinese Medicine, Hunan University of Chinese Medicine, Changsha, Hunan, China
| | - Xiaoya Li
- Yunnan Provincial Key Laboratory of Molecular Biology for Sinomedicine, Kunming, Yunnan University of Traditional Chinese Medicine, Kunming, Yunan, China
| | - Xuehong Wang
- The Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Na Deng
- College of Chinese Medicine, Hunan University of Chinese Medicine, Changsha, Hunan, China
| | - Ying Cai
- College of Chinese Medicine, Hunan University of Chinese Medicine, Changsha, Hunan, China
| | - Zhoujin Tan
- College of Chinese Medicine, Hunan University of Chinese Medicine, Changsha, Hunan, China
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2
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Wu C, Lei J, Meng F, Wang X, Wong CJ, Peng J, Lin G, Gingras AC, Ma J, Zhang S. Trace Sample Proteome Quantification by Data-Dependent Acquisition without Dynamic Exclusion. Anal Chem 2023; 95:17981-17987. [PMID: 38032138 PMCID: PMC10719888 DOI: 10.1021/acs.analchem.3c03357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 11/07/2023] [Accepted: 11/09/2023] [Indexed: 12/01/2023]
Abstract
Despite continuous technological improvements in sample preparation, mass-spectrometry-based proteomics for trace samples faces the challenges of sensitivity, quantification accuracy, and reproducibility. Herein, we explored the applicability of turboDDA (a method that uses data-dependent acquisition without dynamic exclusion) for quantitative proteomics of trace samples. After systematic optimization of acquisition parameters, we compared the performance of turboDDA with that of data-dependent acquisition with dynamic exclusion (DEDDA). By benchmarking the analysis of trace unlabeled human cell digests, turboDDA showed substantially better sensitivity in comparison with DEDDA, whether for unfractionated or high pH fractionated samples. Furthermore, through designing an iTRAQ-labeled three-proteome model (i.e., tryptic digest of protein lysates from yeast, human, and E. coli) to document the interference effect, we evaluated the quantification interference, accuracy, reproducibility of iTRAQ labeled trace samples, and the impact of PIF (precursor intensity fraction) cutoff for different approaches (turboDDA and DEDDA). The results showed that improved quantification accuracy and reproducibility could be achieved by turboDDA, while a more stringent PIF cutoff resulted in more accurate quantification but less peptide identification for both approaches. Finally, the turboDDA strategy was applied to the differential analysis of limited amounts of human lung cancer cell samples, showing great promise in trace proteomics sample analysis.
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Affiliation(s)
- Ci Wu
- Department
of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Georgetown University, Washington D.C. 20007, United States
| | - Jiao Lei
- Clinical
Research Center for Reproduction and Genetics in Hunan Province, Reproductive and Genetic Hospital of CITIC-XIANGYA, Changsha, Hunan 410000, China
| | - Fei Meng
- Clinical
Research Center for Reproduction and Genetics in Hunan Province, Reproductive and Genetic Hospital of CITIC-XIANGYA, Changsha, Hunan 410000, China
| | - Xingyao Wang
- National
& Local Joint Engineering Laboratory of Animal Peptide Drug Development,
College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, China
| | - Cassandra J. Wong
- Lunenfeld-Tanenbaum
Research Institute, Toronto, Ontario M5G 1X5, Canada
| | - Jiaxi Peng
- Department
of Chemistry, University of Toronto, Toronto, Ontario M5S 3G9, Canada
| | - Ge Lin
- Clinical
Research Center for Reproduction and Genetics in Hunan Province, Reproductive and Genetic Hospital of CITIC-XIANGYA, Changsha, Hunan 410000, China
| | - Anne-Claude Gingras
- Lunenfeld-Tanenbaum
Research Institute, Toronto, Ontario M5G 1X5, Canada
- Department
of Molecular Genetics, University of Toronto, Toronto, Ontario M5G 1X8, Canada
| | - Junfeng Ma
- Department
of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Georgetown University, Washington D.C. 20007, United States
| | - Shen Zhang
- Clinical
Research Center for Reproduction and Genetics in Hunan Province, Reproductive and Genetic Hospital of CITIC-XIANGYA, Changsha, Hunan 410000, China
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3
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Li Z, Su M, Xie X, Wang P, Bi H, Li E, Ren K, Dong L, Lv Z, Ma X, Liu Y, Zhao B, Peng Y, Liu J, Liu L, Yang J, Ji P, Mei Y. mDia formins form hetero-oligomers and cooperatively maintain murine hematopoiesis. PLoS Genet 2023; 19:e1011084. [PMID: 38157491 PMCID: PMC10756686 DOI: 10.1371/journal.pgen.1011084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Accepted: 11/22/2023] [Indexed: 01/03/2024] Open
Abstract
mDia formin proteins regulate the dynamics and organization of the cytoskeleton through their linear actin nucleation and polymerization activities. We previously showed that mDia1 deficiency leads to aberrant innate immune activation and induces myelodysplasia in a mouse model, and mDia2 regulates enucleation and cytokinesis of erythroblasts and the engraftment of hematopoietic stem and progenitor cells (HSPCs). However, whether and how mDia formins interplay and regulate hematopoiesis under physiological and stress conditions remains unknown. Here, we found that both mDia1 and mDia2 are required for HSPC regeneration under stress, such as serial plating, aging, and reconstitution after myeloid ablation. We showed that mDia1 and mDia2 form hetero-oligomers through the interactions between mDia1 GBD-DID and mDia2 DAD domains. Double knockout of mDia1 and mDia2 in hematopoietic cells synergistically impaired the filamentous actin network and serum response factor-involved transcriptional signaling, which led to declined HSPCs, severe anemia, and significant mortality in neonates and newborn mice. Our data demonstrate the potential roles of mDia hetero-oligomerization and their non-rodent functions in the regulation of HSPCs activity and orchestration of hematopoiesis.
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Affiliation(s)
- Zhaofeng Li
- Hunan Provincial Key Laboratory of Animal Model and Molecular Medicine, Hunan University, Changsha, China
- School of Biomedical Sciences, Hunan University, Changsha, China
| | - Meng Su
- Hunan Provincial Key Laboratory of Animal Model and Molecular Medicine, Hunan University, Changsha, China
- School of Biomedical Sciences, Hunan University, Changsha, China
| | - Xinshu Xie
- Hunan Provincial Key Laboratory of Animal Model and Molecular Medicine, Hunan University, Changsha, China
- School of Biomedical Sciences, Hunan University, Changsha, China
| | - Pan Wang
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, United States of America
| | - Honghao Bi
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, United States of America
| | - Ermin Li
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, United States of America
| | - Kehan Ren
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, United States of America
| | - Lili Dong
- Hunan Provincial Key Laboratory of Animal Model and Molecular Medicine, Hunan University, Changsha, China
- School of Biomedical Sciences, Hunan University, Changsha, China
| | - Zhiyi Lv
- Hunan Provincial Key Laboratory of Animal Model and Molecular Medicine, Hunan University, Changsha, China
- School of Biomedical Sciences, Hunan University, Changsha, China
| | - Xuezhen Ma
- Hunan Provincial Key Laboratory of Animal Model and Molecular Medicine, Hunan University, Changsha, China
- School of Biomedical Sciences, Hunan University, Changsha, China
| | - Yijie Liu
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, United States of America
| | - Baobing Zhao
- Department of Pharmacology, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Yuanliang Peng
- Department of Hematology, the Second Xiangya Hospital; Molecular Biology Research Center, School of Life Sciences; Hunan Province Key Laboratory of Basic and Applied Hematology, Central South University; Changsha, China
| | - Jing Liu
- Department of Hematology, the Second Xiangya Hospital; Molecular Biology Research Center, School of Life Sciences; Hunan Province Key Laboratory of Basic and Applied Hematology, Central South University; Changsha, China
| | - Lu Liu
- Hunan Provincial Key Laboratory of Animal Model and Molecular Medicine, Hunan University, Changsha, China
- School of Biomedical Sciences, Hunan University, Changsha, China
| | - Jing Yang
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, United States of America
| | - Peng Ji
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, United States of America
| | - Yang Mei
- Hunan Provincial Key Laboratory of Animal Model and Molecular Medicine, Hunan University, Changsha, China
- School of Biomedical Sciences, Hunan University, Changsha, China
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Xie W, Peng M, Liu Y, Zhang B, Yi L, Long Y. Simvastatin induces pyroptosis via ROS/caspase-1/GSDMD pathway in colon cancer. Cell Commun Signal 2023; 21:329. [PMID: 37974278 PMCID: PMC10652480 DOI: 10.1186/s12964-023-01359-y] [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: 05/25/2023] [Accepted: 10/17/2023] [Indexed: 11/19/2023] Open
Abstract
BACKGROUND The outcome of patients with colon cancer is still unsatisfied nowadays. Simvastatin is a type of statins with anti-cancer activity, but its effect on colon cancer cells remains unclear. The present study is intended to determine the underlying mechanism of simvastatin in treatment of colon cancer. METHODS The viability and pyroptosis rate of cells treated and untreated with simvastatin were analysed by CCK-8 and flow cytometry assays, respectively. We used DCFH-DA and flow cytometry to detect reactive oxygen species (ROS) production. Levels of pyroptosis markers were detected by western blotting analysis or immunofluorescence staining. Besides, the anticancer properties of simvastatin on colon cancer were further demonstrated using a cell line based xenograft tumor model. RESULTS Simvastatin treatment in HCT116 and SW620 induced pyroptosis and suppressed cell proliferation, with changes in the expression level of NLPR3, ASC, cleaved-caspase-1, mature IL-1β, IL-18 and GSDMD-N. Moreover, inhibition of caspase-1 and ROS attenuated the effects of simvastatin on cancer cell viability. In addition, it was identified that simvastatin has an anti-tumor effect by down-regulating ROS production and inducing downstream caspase-1 dependent pyroptosis in the subcutaneous transplantation tumors of HCT116 cells in BALB/c nude mice. CONCLUSIONS Our in vitro and in vivo results indicated that simvastatin induced pyroptosis through ROS/caspase-1/GSDMD pathway, thereby serving as a potential agent for colon cancer treatment. Video Abstract.
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Affiliation(s)
- Wei Xie
- Translational medicine centre, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, 410013, Hunan, P. R. China
- Department of Hepatobiliary Surgery, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, 410013, Hunan, P. R. China
| | - Mingjing Peng
- Central laboratory, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, 410013, P. R. China
| | - Ying Liu
- Hunan Provincial Clinical Research Centre for Oncoplastic Surgery, Hunan Cancer hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Changsha, Hunan, 410013, P. R. China
| | - Bocheng Zhang
- Translational medicine centre, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, 410013, Hunan, P. R. China
- Hunan Provincial Clinical Research Centre for Oncoplastic Surgery, Hunan Cancer hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Changsha, Hunan, 410013, P. R. China
| | - Liang Yi
- Hunan Provincial Clinical Research Centre for Oncoplastic Surgery, Hunan Cancer hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Changsha, Hunan, 410013, P. R. China
| | - Ying Long
- Translational medicine centre, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, 410013, Hunan, P. R. China.
- Hunan Provincial Clinical Research Centre for Oncoplastic Surgery, Hunan Cancer hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Changsha, Hunan, 410013, P. R. China.
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Peng M, Deng F, Qi D. Development of a nomogram model for the early prediction of sepsis-associated acute kidney injury in critically ill patients. Sci Rep 2023; 13:15200. [PMID: 37709806 PMCID: PMC10502039 DOI: 10.1038/s41598-023-41965-x] [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: 05/22/2023] [Accepted: 09/04/2023] [Indexed: 09/16/2023] Open
Abstract
Sepsis-associated acute kidney injury is a common complication of sepsis, but it is difficult to predict sepsis-associated acute kidney injury. In this retrospective observational study, adult septic patients were recruited from the MIMIC-III database as the training cohort (n = 4764) and from Xiangya Hospital (n = 1568) and Zhang's database as validation cohorts. We identified eleven predictors with seven independent risk predictors of sepsis-associated acute kidney injury [fluid input_day1 ≥ 3390 ml (HR hazard ratio 1.42), fluid input_day2 ≥ 2734 ml (HR 1.64), platelet_min_day5 ≤ 224.2 × 109/l (HR 0.86), length of ICU stay ≥ 2.5 days (HR 1.24), length of hospital stay ≥ 5.8 days (HR 1.18), Bun_max_day1 ≥ 20 mmol/l (HR 1.20), and mechanical ventilation time ≥ 96 h (HR 1.11)] by multivariate Cox regression analysis, and the eleven predictors were entered into the nomogram. The nomogram model showed a discriminative ability for estimating sepsis-associated acute kidney injury. These results indicated that clinical parameters such as excess input fluid on the first and second days after admission and longer mechanical ventilation time could increase the risk of developing sepsis-associated acute kidney injury. With our study, we built a real-time prediction model for potentially forecasting acute kidney injury in septic patients that can help clinicians make decisions as early as possible to avoid sepsis-associated acute kidney injury.
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Affiliation(s)
- Milin Peng
- Department of Critical Care Medicine, Xiangya Hospital, Central South University, Changsha, Hunan, People's Republic of China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, People's Republic of China
- Hunan Provincial Clinical Research Center for Critical Care Medicine, Xiangya Hospital, Central South University, Changsha, Hunan, People's Republic of China
| | - Fuxing Deng
- Department of Oncology, Xiangya Hospital, Central South University, Changsha, Hunan, People's Republic of China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, People's Republic of China
- Hunan Provincial Clinical Research Center for Critical Care Medicine, Xiangya Hospital, Central South University, Changsha, Hunan, People's Republic of China
| | - Desheng Qi
- Department of Emergency, Xiangya Hospital, Central South University, Xiangya Road 87, Changsha, Hunan, People's Republic of China.
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, People's Republic of China.
- Hunan Provincial Clinical Research Center for Critical Care Medicine, Xiangya Hospital, Central South University, Changsha, Hunan, People's Republic of China.
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6
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Luo J, Yuan H, Liang L, Xie Q, Jiang S, Fu Y, Chen S, Wang W. An integrated strategy for quality control of the multi-origins herb medicine of Gentianae Macrophyllae Radix based on UPLC-Orbitrap-MS/MS and HPLC-DAD. RSC Adv 2023; 13:8847-8862. [PMID: 36936846 PMCID: PMC10018649 DOI: 10.1039/d2ra07591a] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Accepted: 03/06/2023] [Indexed: 03/18/2023] Open
Abstract
Gentianae Macrophyllae Radix, the dried root of Gentiana macrophylla Pall., Gentiana crassicaulis Duthie ex Burk., Gentiana straminea Maxim., or Gentiana dahurica Fisch., is a traditional Chinese medicine with multi-origins and some adulterants. Liquid chromatography coupled to electrostatic orbitrap high-resolution mass spectrometry (LC-Orbitrap-MS) was used to search the different components of Gentianae Macrophyllae Radix of the four species. High-performance liquid chromatography (HPLC) combined with fingerprint analysis, principal components analysis (PCA), and partial least-squares discrimination analysis (PLS-DA) was also utilized to distinguish them and their adulterants based on the critical components identified by LC-MS. A single standard to determine the multi-components (SSDMC) method was established for the determination of the critical markers. A total of 93 compounds were identified from Gentianae Macrophyllae Radix, including 58 common ones. Their HPLC fingerprints show a significant difference with the adulterants. In addition, PCA and PLS-DA could make a distinction among the four species. Loganic acid, 6'-O-β-d-glucosylgentiopicroside, swertiamarine, gentiopicroside, and sweroside were identified as the critical markers and then quantified by the SSDMC method. The developed strategy is powerful for the quality control and authentication of Gentianae Macrophyllae Radix.
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Affiliation(s)
- Jiangyi Luo
- TCM and Ethnomedicine Innovation & Development International Laboratory, Innovative Material Medical Research Institute, School of Pharmacy, Hunan University of Chinese Medicine Changsha China +86-731-8845-8227 +86-136-5743-8606
| | - Hanwen Yuan
- TCM and Ethnomedicine Innovation & Development International Laboratory, Innovative Material Medical Research Institute, School of Pharmacy, Hunan University of Chinese Medicine Changsha China +86-731-8845-8227 +86-136-5743-8606
| | - Ling Liang
- TCM and Ethnomedicine Innovation & Development International Laboratory, Innovative Material Medical Research Institute, School of Pharmacy, Hunan University of Chinese Medicine Changsha China +86-731-8845-8227 +86-136-5743-8606
| | - Qinling Xie
- TCM and Ethnomedicine Innovation & Development International Laboratory, Innovative Material Medical Research Institute, School of Pharmacy, Hunan University of Chinese Medicine Changsha China +86-731-8845-8227 +86-136-5743-8606
| | - Sai Jiang
- TCM and Ethnomedicine Innovation & Development International Laboratory, Innovative Material Medical Research Institute, School of Pharmacy, Hunan University of Chinese Medicine Changsha China +86-731-8845-8227 +86-136-5743-8606
| | - Yangfen Fu
- TCM and Ethnomedicine Innovation & Development International Laboratory, Innovative Material Medical Research Institute, School of Pharmacy, Hunan University of Chinese Medicine Changsha China +86-731-8845-8227 +86-136-5743-8606
| | - Shenghuang Chen
- TCM and Ethnomedicine Innovation & Development International Laboratory, Innovative Material Medical Research Institute, School of Pharmacy, Hunan University of Chinese Medicine Changsha China +86-731-8845-8227 +86-136-5743-8606
| | - Wei Wang
- TCM and Ethnomedicine Innovation & Development International Laboratory, Innovative Material Medical Research Institute, School of Pharmacy, Hunan University of Chinese Medicine Changsha China +86-731-8845-8227 +86-136-5743-8606
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Xiang A, Du K, Fu Q, Zhang Y, Zhao L, Yan L, Wen D. Do monocular myopia children need to wear glasses? Effects of monocular myopia on visual function and binocular balance. Front Neurosci 2023; 17:1135991. [PMID: 37034177 PMCID: PMC10073496 DOI: 10.3389/fnins.2023.1135991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Accepted: 03/06/2023] [Indexed: 04/11/2023] Open
Abstract
Objective This study aims to compare the binocular visual functions and balance among monocular myopic adolescents and adults and binocular low myopic adolescents and explore whether monocular myopia requires glasses. Methods A total of 106 patients participated in this study. All patients were divided into three groups: the monocular myopia children group (Group 1 = 41 patients), the monocular myopia adult group (Group 2 = 26 patients) and the binocular low myopia children group (Group 3 = 39 patients). The refractive parameters, accommodation, stereopsis, and binocular balance were compared. Results The binocular refractive difference in Group 1, Group 2, and Group 3 was -1.37 ± 0.93, -1.94 ± 0.91, and -0.32 ± 0.27 D, respectively. Moreover, uncorrected visual acuity (UCVA), spherical equivalent (SE) and monocular accommodative amplitude (AA) between myopic and emmetropic eyes in Group 1 and Group 2 were significantly different (all P < 0.05). There was a significant difference in the accommodative facility (AF) between myopic and emmetropic eyes in Group 2 (t = 2.131, P = 0.043). Furthermore, significant differences were found in monocular AA (t = 6.879, P < 0.001), binocular AA (t = 5.043, P < 0.001) and binocular AF (t = -3.074, P = 0.003) between Group 1 and Group 2. The normal ratio of stereopsis according to the random dots test in Group 1 was higher than in Group 2 (χ2 = 14.596, P < 0.001). The normal ratio of dynamic stereopsis in Group 1 was lower than in Group 3 (χ2 = 13.281, P < 0.001). The normal signal-to-noise ratio of the binocular balance point in Group 1 was lower than Group 3 (χ2 = 4.755, P = 0.029). Conclusion First, monocular myopia could lead to accommodative dysfunction and unbalanced input of binocular visual signals, resulting in myopia progression. Second, monocular myopia may also be accompanied by stereopsis dysfunction, and long-term uncorrected monocular myopia may worsen stereopsis acuity in adulthood. In addition, patients with monocular myopia could exhibit stereopsis dysfunction at an early stage. Therefore, children with monocular myopia must wear glasses to restore binocular balance and visual functions, thereby delaying myopia progression.
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Affiliation(s)
- Aiqun Xiang
- Eye Center of Xiangya Hospital, Central South University, Changsha, Hunan, China
- Hunan Key Laboratory of Ophthalmology, Changsha, Hunan, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Kaixuan Du
- Eye Center of Xiangya Hospital, Central South University, Changsha, Hunan, China
- Hunan Key Laboratory of Ophthalmology, Changsha, Hunan, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Qiuman Fu
- Eye Center of Xiangya Hospital, Central South University, Changsha, Hunan, China
- Hunan Key Laboratory of Ophthalmology, Changsha, Hunan, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Yanni Zhang
- Eye Center of Xiangya Hospital, Central South University, Changsha, Hunan, China
- Hunan Key Laboratory of Ophthalmology, Changsha, Hunan, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Liting Zhao
- Eye Center of Xiangya Hospital, Central South University, Changsha, Hunan, China
- Hunan Key Laboratory of Ophthalmology, Changsha, Hunan, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Li Yan
- National Engineering Research Center for Healthcare Devices, Guangzhou, China
| | - Dan Wen
- Eye Center of Xiangya Hospital, Central South University, Changsha, Hunan, China
- Hunan Key Laboratory of Ophthalmology, Changsha, Hunan, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, China
- *Correspondence: Dan Wen,
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8
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Zhang N, Wang H, Wang X, Tian M, Tian Y, Li Q, Liang C, Peng X, Ding J, Wu X, Tan H. Combination effect between gut microbiota and traditional potentially modifiable risk factors for first-ever ischemic stroke in Tujia, Miao and Han populations in China. Front Mol Neurosci 2022; 15:922399. [PMID: 36385753 PMCID: PMC9641726 DOI: 10.3389/fnmol.2022.922399] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2022] [Accepted: 08/15/2022] [Indexed: 11/30/2022] Open
Abstract
China has had explosive growth in ischemic stroke (IS) burden with significant ethnic and geographic disparities. The aim of this study was to explore the possible combination effect between gut microbiota and traditional potentially modifiable risk factors for IS among two ethnic minorities (Tujia and Miao) and the Han population. Herein, we first used the 16 S rRNA sequencing to compare the gut microbial compositions of 82 patients with first-ever IS vs. 82 normal controls (NCs) among Han, Tujia, and Miao people between 1 May 2018 and 30 April 2019, from Xiangxi Tujia and Miao Autonomous Prefecture in China. An additive model was used to study the interaction between traditional risk factors and gut microbiota with R software. Linear discriminant analysis (LDA) and LDA effect size (LEfSe) results showed that the identified key gut microbiota's taxonomic composition varied in different ethnicity between the IS patients and NCs. Furthermore, families Lactobacillaceae, Enterococcaceae, Streptococcaceae, and Enterobacteriaceae were found to be positively correlated with high-risk factors and negatively correlated with preventive factors in the IS patients, but families Ruminococcaceae and Lachnospiraceae were just the opposite in the NCs. There were additive interactions between traditional risk factors (systolic blood pressure, diastolic blood pressure, and high-sensitive C-reactive protein) and family Enterococcaceae for first-ever IS with the attributable proportion due to the interaction was 0.74, 0.71, and 0.85, respectively; and the synergy index was 4.45, 3.78, and 7.01, respectively. This preliminary but promising study showed that the gut microbiota disturbances may potentially interact to IS with different ethnic host's traditional risk factors.
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Affiliation(s)
- Na Zhang
- Hunan Provincial Key Laboratory of Clinical Epidemiology, Department of Epidemiology and Health Statistics, Xiangya School of Public Health, Central South University, Changsha, China
- Department of Geriatric Rehabilitation, Hunan Provincial Rehabilitation Hospital, Changsha, China
| | - Haoren Wang
- Hunan Provincial Key Laboratory of Clinical Epidemiology, Department of Epidemiology and Health Statistics, Xiangya School of Public Health, Central South University, Changsha, China
| | - Xiaolei Wang
- Hunan Provincial Key Laboratory of Clinical Epidemiology, Department of Epidemiology and Health Statistics, Xiangya School of Public Health, Central South University, Changsha, China
| | - Mengyuan Tian
- Hunan Provincial Key Laboratory of Clinical Epidemiology, Department of Epidemiology and Health Statistics, Xiangya School of Public Health, Central South University, Changsha, China
| | - Yong Tian
- Department of Neurology, The First Affiliated Hospital of Jishou University, Xiangxi, China
| | - Qi Li
- Department of Planned Immunity, Xiangxi Center for Disease Prevention and Control, Xiangxi, China
| | - Chengcai Liang
- Department of Neurology, The First Affiliated Hospital of Jishou University, Xiangxi, China
| | - Xiaowei Peng
- Department of Neurology, The First Affiliated Hospital of Jishou University, Xiangxi, China
| | - Jian Ding
- Department of Geriatric Rehabilitation, Hunan Provincial Rehabilitation Hospital, Changsha, China
- *Correspondence: Hongzhuan Tan
| | - Xinrui Wu
- Hunan Provincial Key Laboratory of Clinical Epidemiology, Department of Epidemiology and Health Statistics, Xiangya School of Public Health, Central South University, Changsha, China
- Jishou University School of Medicine, Xiangxi, China
- Jian Ding
| | - Hongzhuan Tan
- Hunan Provincial Key Laboratory of Clinical Epidemiology, Department of Epidemiology and Health Statistics, Xiangya School of Public Health, Central South University, Changsha, China
- Xinrui Wu
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Zhou Y, Tang J, Sun Y, Yang WFZ, Ma Y, Wu Q, Chen S, Wang Q, Hao Y, Wang Y, Li M, Liu T, Liao Y. A brainnetome atlas-based methamphetamine dependence identification using neighborhood component analysis and machine learning on functional MRI data. Front Cell Neurosci 2022; 16:958437. [PMID: 36238830 PMCID: PMC9550874 DOI: 10.3389/fncel.2022.958437] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Accepted: 09/06/2022] [Indexed: 11/13/2022] Open
Abstract
Addiction to methamphetamine (MA) is a major public health concern. Developing a predictive model that can classify and characterize the brain-based biomarkers predicting MA addicts may directly lead to improved treatment outcomes. In the current study, we applied the support vector machine (SVM)-based classification method to resting-state functional magnetic resonance imaging (rs-fMRI) data obtained from individuals with methamphetamine use disorder (MUD) and healthy controls (HCs) to identify brain-based features predictive of MUD. Brain connectivity analyses were conducted for 36 individuals with MUD as well as 37 HCs based on the brainnetome atlas, and the neighborhood component analysis was applied for feature selection. Eighteen most relevant features were screened out and fed into the SVM to classify the data. The classifier was able to differentiate individuals with MUD from HCs with a high prediction accuracy, sensitivity, specificity, and AUC of 88.00, 86.84, 89.19, and 0.94, respectively. The top six discriminative features associated with changes in the functional activity of key nodes in the default mode network (DMN), all the remaining discriminative features are related to the thalamic connections within the cortico-striato-thalamo-cortical (CSTC) loop. In addition, the functional connectivity (FC) between the bilateral inferior parietal lobule (IPL) and right cingulate gyrus (CG) was significantly correlated with the duration of methamphetamine use. The results of this study not only indicated that MUD-related FC alterations were predictive of group membership, but also suggested that machine learning techniques could be used for the identification of MUD-related imaging biomarkers.
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Affiliation(s)
- Yanan Zhou
- Department of Psychiatry, National Clinical Research Center for Mental Disorders, The Second Xiangya Hospital of Central South University, Changsha, China
- Department of Psychiatry, Brain Hospital of Hunan Province (The Second People's Hospital of Hunan Province), Changsha, China
| | - Jingsong Tang
- Department of Psychiatry, School of Medicine, Sir Run-Run Shaw Hospital, Zhejiang University, Hangzhou, China
| | - Yunkai Sun
- Department of Psychiatry, School of Medicine, Sir Run-Run Shaw Hospital, Zhejiang University, Hangzhou, China
| | - Winson Fu Zun Yang
- Department of Psychological Sciences, College of Arts and Sciences, Texas Tech University, Lubbock, TX, United States
| | - Yuejiao Ma
- Department of Psychiatry, National Clinical Research Center for Mental Disorders, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Qiuxia Wu
- Department of Psychiatry, National Clinical Research Center for Mental Disorders, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Shubao Chen
- Department of Psychiatry, National Clinical Research Center for Mental Disorders, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Qianjin Wang
- Department of Psychiatry, National Clinical Research Center for Mental Disorders, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Yuzhu Hao
- Department of Psychiatry, National Clinical Research Center for Mental Disorders, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Yunfei Wang
- Department of Psychiatry, National Clinical Research Center for Mental Disorders, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Manyun Li
- Department of Psychiatry, National Clinical Research Center for Mental Disorders, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Tieqiao Liu
- Department of Psychiatry, National Clinical Research Center for Mental Disorders, The Second Xiangya Hospital of Central South University, Changsha, China
- *Correspondence: Tieqiao Liu
| | - Yanhui Liao
- Department of Psychiatry, School of Medicine, Sir Run-Run Shaw Hospital, Zhejiang University, Hangzhou, China
- Yanhui Liao
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10
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Du S, Hong X, Yang Y, Ding Z, Yu T. Association between body fat percentage and H-type hypertension in postmenopausal women. Front Public Health 2022; 10:950805. [PMID: 35937205 PMCID: PMC9354540 DOI: 10.3389/fpubh.2022.950805] [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] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Accepted: 06/30/2022] [Indexed: 11/16/2022] Open
Abstract
Background Previous studies have explored the relationship between body fat percentage (BFP) and hypertension or homocysteine. However, evidence on the constancy of the association remains inconclusive in postmenopausal women. The aim of this study was to investigate the association between BFP and H-type hypertension in postmenopausal women. Methods This cross-sectional study included 1,597 eligible female patients with hypertension. Homocysteine levels ≥10 mmol/L were defined as H-type hypertension. BFP was calculated by measuring patients' physical parameters. Subjects were divided into 4 groups according to quartiles of BFP (Q1: 33.4% or lower, Q2: 33.4–36.1%, Q3: 36.1–39.1%, Q4: >39.1%). We used restricted cubic spline regression models and logistic regression analysis to assess the relationship between BFP and H-type hypertension. Additional subgroup analysis was performed for this study. Results Among 1,597 hypertensive patients, 955 (59.8%) participants had H-type hypertension. There were significant differences between the two groups in age, BMI, educational background, marital status, exercise status, drinking history, WC, TG, LDL, Scr, BUN, and eGFR (P < 0.05). The prevalence of H-type hypertension in the Q1 to Q4 groups was 24.9, 25.1, 24.9, and 25.1%, respectively. After adjusting for relevant factors, we found that the risk of H-type hypertension in the Q4 group had a significantly higher than the Q1 group (OR = 3.2, 95% CI: 1.3–7.5). Conclusion BFP was positively associated with the risk of H-type hypertension in postmenopausal women. Postmenopausal women should control body fat to prevent hypertension.
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Affiliation(s)
- Shihong Du
- Clinical Epidemiology Research Office, The First Affiliated Hospital of Hunan Normal University, Changsha, China
- Key Laboratory of Molecular Epidemiology, Hunan Normal University, Changsha, China
- Department of Epidemiology and Statistics, College of Medicine, Hunan Normal University, Changsha, China
| | - Xiuqin Hong
- Clinical Epidemiology Research Office, The First Affiliated Hospital of Hunan Normal University, Changsha, China
- Key Laboratory of Molecular Epidemiology, Hunan Normal University, Changsha, China
- Research Department, The First Affiliated Hospital of Hunan Normal University, Changsha, China
- *Correspondence: Xiuqin Hong
| | - Yi Yang
- Clinical Epidemiology Research Office, The First Affiliated Hospital of Hunan Normal University, Changsha, China
- Key Laboratory of Molecular Epidemiology, Hunan Normal University, Changsha, China
- Department of Epidemiology and Statistics, College of Medicine, Hunan Normal University, Changsha, China
| | - Zihao Ding
- Clinical Epidemiology Research Office, The First Affiliated Hospital of Hunan Normal University, Changsha, China
- Key Laboratory of Molecular Epidemiology, Hunan Normal University, Changsha, China
- Department of Epidemiology and Statistics, College of Medicine, Hunan Normal University, Changsha, China
| | - Tong Yu
- Clinical Epidemiology Research Office, The First Affiliated Hospital of Hunan Normal University, Changsha, China
- Key Laboratory of Molecular Epidemiology, Hunan Normal University, Changsha, China
- Department of Epidemiology and Statistics, College of Medicine, Hunan Normal University, Changsha, China
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11
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Xie N, Hu X, Tang Y, Tian C, He Y, Hu ZY, Hu C, Wang X, Liu X, Liu L, Xiao H, Peng W, Zhou H, Ouyang Q. Impact of surgical management of primary tumors in stage IV breast cancer patients: a retrospective observational study based on SEER database. BMJ Open 2022; 12:e054135. [PMID: 35105583 PMCID: PMC8808454 DOI: 10.1136/bmjopen-2021-054135] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
OBJECTIVES Although primary tumour surgery could prolong survival for patients with stage IV breast cancer, how to select candidates for primary tumour surgery is still a challenging problem for medical oncologists. DESIGN This study is a retrospective database study. SETTING AND PARTICIPANTS In this study, we aimed at evaluating the primary site surgery effect and select the beneficial subgroups. 13 618 patients with stage IV breast cancer, diagnosed between 2010 and 2015, were collected from SEER*Stat database. INTERVENTIONS Based on the local surgery at primary tumour site, patients were categorised into three groups: primary tumour surgery performed group, recommended for primary tumour surgery but refused (RBR) group and surgery not recommended (NR) group. PRIMARY AND SECONDARY OUTCOME MEASURES All-cause survival and breast cancer-specific survival (BCSS). RESULTS Univariate Cox regression analyses showed that, compared with surgery group, patients in non-surgery (RBR and NR) groups tend to be older, T4, N0/NX, triple-negative and visceral metastatic. For both all-cause survival and BCSS, non-surgery, advanced T stage, triple-negative BC (TNBC) and visceral metastases were significant risk factors. Primary tumour surgery showed benefits for both all-cause survival (HR=0.44, 95% CI=0.39-0.49, p<0.0001) and BCSS (HR=0.43, 95% CI=0.38-0.49, p<0.0001). However, after propensity score matching, primary tumour surgery failed to demonstrate significant benefits for TNBC (HR=0.96, 95% CI=0.60-1.53, p=0.851) and patients with visceral metastases (HR=0.90, 95% CI=0.60-1.36, p=0.62). CONCLUSION Surgery was associated with prolonged survival in stage IV breast cancers, but not in patients with TNBC and visceral metastases.
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Affiliation(s)
- Ning Xie
- Hunan Cancer Hospital, Central South University, Changsha, China
| | - Xiaobo Hu
- Department of Breast Cancer Surgical Oncology, Hunan Cancer Hospital, Changsha, China
| | - Yu Tang
- Hunan Cancer Hospital, Central South University, Changsha, China
| | - Can Tian
- Hunan Cancer Hospital, Central South University, Changsha, China
| | - Ying He
- Department of Breast Cancer Surgical Oncology, Hunan Cancer Hospital, Changsha, China
| | - Zhe-Yu Hu
- Hunan Cancer Hospital, Central South University, Changsha, China
| | - Chongyu Hu
- Department of Neurology, Hunan Provincial People's Hospital, Changsha, China
| | | | - Xiangyan Liu
- Xiangya Hospital of Central South University, Changsha, China
- Clinical Research Center for Breast Cancer Control and Prevention in Hunan Province, Changsha, China
| | - Liping Liu
- Hunan Cancer Hospital, Central South University, Changsha, China
| | - Huawu Xiao
- Hunan Cancer Hospital, Central South University, Changsha, China
| | - Wei Peng
- Department of Breast Cancer Surgical Oncology, Hunan Cancer Hospital, Changsha, China
| | - Haoyu Zhou
- College of Information and Intelligence, Hunan Agricultural University, Changsha, China
| | - Quchang Ouyang
- Hunan Cancer Hospital, Central South University, Changsha, China
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12
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Zhou Y, Wang Q, Ren H, Wang X, Liao Y, Yang Z, Hao Y, Wang Y, Li M, Ma Y, Wu Q, Wang Y, Yang D, Xin J, Yang WFZ, Wang L, Liu T. Regional Homogeneity Abnormalities and Its Correlation With Impulsivity in Male Abstinent Methamphetamine Dependent Individuals. Front Mol Neurosci 2022; 14:810726. [PMID: 35126053 PMCID: PMC8811469 DOI: 10.3389/fnmol.2021.810726] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2021] [Accepted: 12/27/2021] [Indexed: 11/30/2022] Open
Abstract
Methamphetamine (MA) use affects the brain structure and function. However, no studies have investigated the relationship between changes in regional homogeneity (ReHo) and impulsivity in MA dependent individuals (MADs). The aim of this study was to investigate the changes of brain activity under resting state in MADs and their relationship to impulsivity using ReHo method. Functional magnetic resonance imaging (fMRI) was performed to collect data from 46 MADs and 44 healthy controls (HCs) under resting state. ReHo method was used to investigate the differences in average ReHo values between the two groups. The ReHo values abnormalities of the brain regions found in inter-group comparisons were extracted and correlated with impulsivity. Compared to the HCs, MADs showed significant increased ReHo values in the bilateral striatum, while the ReHo values of the bilateral precentral gyrus and the bilateral postcentral gyrus decreased significantly. The ReHo values of the left precentral gyrus were negatively correlated with the BIS-attention, BIS-motor, and BIS-nonplanning subscale scores, while the ReHo values of the postcentral gyrus were only negatively correlated with the BIS-motor subscale scores in MADs. The abnormal spontaneous brain activity in the resting state of MADs revealed in this study may further improve our understanding of the neuro-matrix of MADs impulse control dysfunction and may help us to explore the neuropathological mechanism of MADs related dysfunction and rehabilitation.
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Affiliation(s)
- Yanan Zhou
- National Clinical Research Center for Mental Disorders, and Department of Psychiatry, The Second Xiangya Hospital of Central South University, Changsha, China
- Hunan Key Laboratory of Psychiatry and Mental Health, Changsha, China
- Department of Psychiatry, Hunan Brain Hospital (Hunan Second People’s Hospital), Changsha, China
| | - Qianjin Wang
- National Clinical Research Center for Mental Disorders, and Department of Psychiatry, The Second Xiangya Hospital of Central South University, Changsha, China
- Hunan Key Laboratory of Psychiatry and Mental Health, Changsha, China
| | - Honghong Ren
- National Clinical Research Center for Mental Disorders, and Department of Psychiatry, The Second Xiangya Hospital of Central South University, Changsha, China
- Hunan Key Laboratory of Psychiatry and Mental Health, Changsha, China
| | - Xuyi Wang
- National Clinical Research Center for Mental Disorders, and Department of Psychiatry, The Second Xiangya Hospital of Central South University, Changsha, China
- Hunan Key Laboratory of Psychiatry and Mental Health, Changsha, China
| | - Yanhui Liao
- Department of Psychiatry, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Zhi Yang
- Laboratory of Psychological Heath and Imaging, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Institute of Psychological and Behavioral Science, Shanghai Jiao Tong University, Shanghai, China
| | - Yuzhu Hao
- National Clinical Research Center for Mental Disorders, and Department of Psychiatry, The Second Xiangya Hospital of Central South University, Changsha, China
- Hunan Key Laboratory of Psychiatry and Mental Health, Changsha, China
| | - Yunfei Wang
- National Clinical Research Center for Mental Disorders, and Department of Psychiatry, The Second Xiangya Hospital of Central South University, Changsha, China
- Hunan Key Laboratory of Psychiatry and Mental Health, Changsha, China
| | - Manyun Li
- National Clinical Research Center for Mental Disorders, and Department of Psychiatry, The Second Xiangya Hospital of Central South University, Changsha, China
- Hunan Key Laboratory of Psychiatry and Mental Health, Changsha, China
| | - Yuejiao Ma
- National Clinical Research Center for Mental Disorders, and Department of Psychiatry, The Second Xiangya Hospital of Central South University, Changsha, China
- Hunan Key Laboratory of Psychiatry and Mental Health, Changsha, China
| | - Qiuxia Wu
- National Clinical Research Center for Mental Disorders, and Department of Psychiatry, The Second Xiangya Hospital of Central South University, Changsha, China
- Hunan Key Laboratory of Psychiatry and Mental Health, Changsha, China
| | - Yingying Wang
- National Clinical Research Center for Mental Disorders, and Department of Psychiatry, The Second Xiangya Hospital of Central South University, Changsha, China
- Hunan Key Laboratory of Psychiatry and Mental Health, Changsha, China
| | - Dong Yang
- Department of Psychiatry, Hunan Brain Hospital (Hunan Second People’s Hospital), Changsha, China
| | - Jiang Xin
- School of Computer Science and Engineering, Central South University, Changsha, China
| | - Winson Fu Zun Yang
- Department of Psychological Sciences, College of Arts & Sciences, Texas Tech University, Lubbock, TX, United States
- *Correspondence: Winson Fu Zun Yang,
| | - Long Wang
- Department of Psychiatry, Sanming City Taijiang Hospital, Sanming, China
- Long Wang,
| | - Tieqiao Liu
- National Clinical Research Center for Mental Disorders, and Department of Psychiatry, The Second Xiangya Hospital of Central South University, Changsha, China
- Hunan Key Laboratory of Psychiatry and Mental Health, Changsha, China
- Tieqiao Liu,
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13
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Liao Y, Li W, Zhan Z, Duan H, Liu P, Chen Y, Wang Z. 3D-Printed Complex Microstructures with a Self-Sacrificial Structure Enabled by Grayscale Polymerization and Ultrasonic Treatment. ACS Omega 2021; 6:18281-18288. [PMID: 34308059 PMCID: PMC8296550 DOI: 10.1021/acsomega.1c02177] [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] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Accepted: 06/15/2021] [Indexed: 06/13/2023]
Abstract
Complex three-dimensional (3D) microstructures are attracting more and more attention in many applications such as microelectromechanical systems, biomedical engineering, new materials, new energy, environmental protection, and wearable electronics. However, fabricating complex 3D microstructures by 3D printing techniques, especially those with long suspended structures, needs to introduce additional supporting structures, which are difficult to be removed. Here, we propose a simple method in which the supporting structures can be easily removed by optimizing their size and the grayscale value working with ultrasonic treatment in ethanol solution. The 3D microstructures and the supporting structures made of the same insoluble materials are fabricated simultaneously by using a projection microstereolithography system with a dynamic mask. The results demonstrate that the supporting structures play a key role in the fabrication of the long suspended structures while they can be easily removed. The removal time decreases with the increase in the height of the supporting microstructures, and the breaking force and shearing force of the supporting structures increase with the increase in their grayscale and the diameter. In addition, theory and the multiphysics simulation validate that the stress concentration at the top and the bottom of the supporting structures due to the cavitation from ultrasonic vibration dominates the removal of the supporting structures. Finally, a tree-like structure is precisely fabricated by using our method. The present study provides a new way for the removal of the supporting structures for 3D printed suspended microstructures.
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14
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Lan L, Huang J, Liu M, Yin Y, Wei C, Cai Q, Meng X. Polymerization and isomerization cyclic amplification for nucleic acid detection with attomolar sensitivity. Chem Sci 2021; 12:4509-4518. [PMID: 34163716 PMCID: PMC8179492 DOI: 10.1039/d0sc05457g] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Accepted: 12/11/2020] [Indexed: 12/25/2022] Open
Abstract
DNA amplification is one of the most valuable tools for the clinical diagnosis of nucleic acid-related diseases, but current techniques for DNA amplification are based on intermolecular polymerization reactions, resulting in the risk of errors in the intermolecular reaction pattern. In this article, we introduce the concept of intramolecular polymerization and isomerization cyclic amplification (PICA), which extends a short DNA strand to a long strand containing periodic repeats of a sequence through cyclic alternating polymerization and isomerization. To the best of our knowledge, this is the first time that a real ssDNA self-extension method without any additional auxiliary oligonucleotides has been reported. By interfacing PICA with external molecular elements, it can be programmed to respond to different targets. Herein, we designed two distinct types of amplified nucleic acid detection platforms that can be implemented with PICA, including cyclic reverse transcription (CRT) and cyclic replication (CR). We experimentally demonstrate the mechanisms of CRT-PICA and CR-PICA using mammalian miRNA and virus DNA. The results showed that this proposed detection platform has excellent sensitivity, selectivity, and reliability. The detection level could reach the aM level, that is, several copies of target molecules can be detected if a small volume is taken into account.
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Affiliation(s)
- Lin Lan
- College of Biology, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University Changsha 410082 P. R. China
| | - Jin Huang
- College of Biology, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University Changsha 410082 P. R. China
| | - Mengtan Liu
- College of Biology, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University Changsha 410082 P. R. China
| | - Yao Yin
- College of Biology, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University Changsha 410082 P. R. China
| | - Can Wei
- College of Biology, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University Changsha 410082 P. R. China
| | - Qinyun Cai
- College of Biology, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University Changsha 410082 P. R. China
| | - Xiangxian Meng
- College of Biology, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University Changsha 410082 P. R. China
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15
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Zhang Y, Cai Y, He Y, Lin Q, Ren J, Cao D, Zhang L. A label-free fluorescent peptide probe for sensitive and selective determination of copper and sulfide ions in aqueous systems. RSC Adv 2021; 11:7426-7435. [PMID: 35423246 PMCID: PMC8694936 DOI: 10.1039/d0ra08788b] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Accepted: 02/06/2021] [Indexed: 12/22/2022] Open
Abstract
A label free fluorescent peptide probe (HDSGWEVHH) was used for Cu2+ and S2- determination in aqueous solution. Our results demonstrated that HDSGWEVHH is highly selective and sensitive for monitoring free Cu2+ concentration via quenching of the probe fluorescence upon Cu2+ binding. The mechanism of the complexation is investigated with Cyclic Voltammetry (CV), 1H nuclear magnetic resonance (NMR), electron paramagnetic resonance (EPR) spectroscopy and computational techniques. Theoretical calculation results indicated the binding ratio of the probe to Cu2+ is 2 : 1 and the binding constant was obtained as 1.72 × 10 8 M-1. Cu2+ concentration can be detected with the detection limit of 16 nM. Free Cu2+ concentration released from the metallothionein-Cu complex at different pH values was detected. Cu2+ concentration in real water and tea samples was also detected, and the results were consistent with the ones monitored by atomic absorption spectrometer. Because of the exceedingly small K sp value of CuS (1.27 × 10-36), S2- can sequester Cu2+ from HDSGWEVHH to restore the tryptophan (W) fluorescence. Thus the HDSGWEVHH-Cu2+ complex can also be used for S2- detection. The S2- concentrations can be monitored with a detection limit of 19 nM. The assay is also amenable to measurement of S2- concentration in pure water samples. Thus the probe designed herein is sensitive, label free, low cost, and environmentally friendly for Cu2+ and S2- determination in aqueous solutions.
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Affiliation(s)
- Yadan Zhang
- National Engineering Laboratory for Rice and Byproduct Deep Processing, Hunan Key Laboratory of Processed Food for Special Medical Purpose, Hunan Key Laboratory of Forestry Edible Resources Safety and Processing, School of Food Science and Engineering, Central South University of Forestry and Technology Changsha 410004 P. R. China
| | - Yunhui Cai
- National Engineering Laboratory for Rice and Byproduct Deep Processing, Hunan Key Laboratory of Processed Food for Special Medical Purpose, Hunan Key Laboratory of Forestry Edible Resources Safety and Processing, School of Food Science and Engineering, Central South University of Forestry and Technology Changsha 410004 P. R. China
| | - Yonghui He
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, Yunnan Minzu University Kunming Yunnan 650500 P. R. China
| | - Qinlu Lin
- National Engineering Laboratory for Rice and Byproduct Deep Processing, Hunan Key Laboratory of Processed Food for Special Medical Purpose, Hunan Key Laboratory of Forestry Edible Resources Safety and Processing, School of Food Science and Engineering, Central South University of Forestry and Technology Changsha 410004 P. R. China
| | - Jiali Ren
- National Engineering Laboratory for Rice and Byproduct Deep Processing, Hunan Key Laboratory of Processed Food for Special Medical Purpose, Hunan Key Laboratory of Forestry Edible Resources Safety and Processing, School of Food Science and Engineering, Central South University of Forestry and Technology Changsha 410004 P. R. China
| | - Dongsheng Cao
- Xiangya School of Pharmaceutical Science, Central South University Changsha 410083 P. R. China
| | - Lin Zhang
- National Engineering Laboratory for Rice and Byproduct Deep Processing, Hunan Key Laboratory of Processed Food for Special Medical Purpose, Hunan Key Laboratory of Forestry Edible Resources Safety and Processing, School of Food Science and Engineering, Central South University of Forestry and Technology Changsha 410004 P. R. China
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