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Chen Z, Qin H, Liu J, Wu B, Cheng Z, Jiang Y, Liu L, Jing L, Leng X, Jing J, Wang Y, Wang Y. Characteristics of Wall Shear Stress and Pressure of Intracranial Atherosclerosis Analyzed by a Computational Fluid Dynamics Model: A Pilot Study. Front Neurol 2020; 10:1372. [PMID: 32010041 PMCID: PMC6978719 DOI: 10.3389/fneur.2019.01372] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Accepted: 12/11/2019] [Indexed: 01/07/2023] Open
Abstract
Background: Although wall shear stress (WSS) and pressure play important roles in plaque vulnerability, characteristics of the two indices in intracranial atherosclerosis (ICAS) have not been fully investigated yet. This study aimed to elucidate this issue by means of establishing a non-invasive computational fluid dynamics method with time-of-flight magnetic resonance angiography (TOF-MRA) of the whole cerebral artery. Materials and Methods: Subjects with symptomatic ICAS in the middle cerebral artery domain were enrolled, excluding those with concomitant internal carotid artery stenosis. Based on patient-specific TOF-MRA images for three-dimensional (3D) meshes and arterial blood pressure with patient-specific carotid artery ultrasonography for inlet boundary conditions, patients' three-dimensional hemodynamics were modeled by a finite element method governed by Navier-Stokes equations. Results: Among the 55 atherosclerotic lesions analyzed by this TOF-MRA based computational fluid dynamics model, the maximum WSS (WSSmax) was most frequently detected at the apex points and the upper half of the upstream sections of the lesions, whereas the maximum pressure was most often located at the lower half of the upstream sections. As the percent stenosis increases, the relative value of WSSmax and pressure drop increased with significantly increasing steep beyond 50% stenosis. Moreover, WSSmax was found to linearly correlate with pressure drop in ICAS. Conclusions: This study on ICAS revealed certain trends of longitudinal distribution of WSS and pressure and the influences of percent stenosis on cerebral hemodynamics, as well as the correlations between WSS and pressure drop. It represents a step forward in applying computational flow simulation techniques in studying ICAS and stroke, in a patient-specific manner.
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Chen Z, Mo J, Xu J, Qin H, Zheng H, Pan Y, Meng X, Jing J, Xiang X, Wang Y. Risk Profile of Ischemic Stroke Caused by Small-Artery Occlusion vs. Deep Intracerebral Hemorrhage. Front Neurol 2019; 10:1213. [PMID: 31827458 PMCID: PMC6890715 DOI: 10.3389/fneur.2019.01213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2019] [Accepted: 10/30/2019] [Indexed: 11/13/2022] Open
Abstract
Background: Small-artery occlusion (SAO) subtype accounts for a quarter of the cases of ischemic stroke and is mainly caused by pathological changes in cerebral small vessels, which also involve in deep intracerebral hemorrhage (dICH). However, the factors that drive some cases to SAO and others to dICH remained incompletely defined. Material and Methods: This study is a cross-sectional study from the China National Stroke Registry that included consecutive patients with ischemic stroke or intracerebral hemorrhage between August 2007 and September 2008. We compared the risk profile between the two subgroups using multivariable logistic regression. Results: A total of 1,135 patients with SAO stroke and 1,125 dICH patients were included for analyses. Generally, patients with SAO stroke were more likely to be male (odds ratio = 0.74, confidence interval = 0.58-0.94) and have diabetes (0.30, 0.22-0.40), higher atherogenic lipid profiles, higher body mass index (0.96, 0.94-0.99), higher waist/height ratio (0.12, 0.03-0.48), higher platelet count (0.84, 0.77-0.91), and higher proportion of abnormal estimated glomerular filtration rate (<90, ml/min/1.73 m2) (0.77, 0.62-0.95). Conversely, patients with dICH were more likely to have higher blood pressure parameters, inflammation levels (white blood cell count: 1.61, 1.48-1.76; high sensitivity C-reactive protein: 2.07, 1.36-3.16), and high-density lipoprotein-c (1.57, 1.25-1.98). Conclusions: The risk profile between SAO stroke and dICH were different. Furthermore, despite of traditional indexes, waist/height ratio, platelet count, inflammation levels, lipid profile, and estimated glomerular filtration rate also play important roles in driving arteriolosclerosis into opposite ends.
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Cheng Y, Wang Q, Li K, Shi J, Liu Y, Wu L, Han B, Chen G, He J, Wang J, Lou D, Yu H, Qin H, Li XL. Overall survival (OS) update in ALTER 1202: Anlotinib as third-line or further-line treatment in relapsed small-cell lung cancer (SCLC). Ann Oncol 2019. [DOI: 10.1093/annonc/mdz264.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Li K, Cheng Y, Wang Q, Shi J, Han B, Wu L, Chen G, He J, Wang J, Qin H, Li X. P2.12-11 Quality of Life in ALTER1202 Trial of Anlotinib as Third-or Further Line Therapy for Advanced Small Cell Lung Cancer (SCLC): A Post-Hoc Analysis. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.1756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Wang Q, Cheng Y, Li K, Shi J, Han B, Wu L, Chen G, He J, Wang J, Qin H, Li X. OA03.02 Effect of Anlotinib in Advanced Small Cell Lung Cancer Patients Previously Received Chemoradiotherapy: A Subgroup Analysis in ALTER 1202 Trial. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Cheng Y, Wang Q, Li K, Shi J, Han B, Wu L, Chen G, He J, Wang J, Qin H, Li X. P2.12-26 The Impact of Anlotinib for Relapsed SCLC Patients with Brain Metastases: A Subgroup Analysis of ALTER 1202. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.1771] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Huang L, Qin H. SUN-PO068: The Function of Arachidonic Acid (AA) in Chronic Constipation During Synbiotics Treatment. Clin Nutr 2019. [DOI: 10.1016/s0261-5614(19)32702-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Kwak L, Qin H, Dong Z, Wang X, Cheng W, Smith D, Song J, Aldoss I, Muschen M, Forman S. Novel BAFF-R CAR T-cell Therapy for CD19 Antigen-loss Relapsed B Cell Tumors. Hematol Oncol 2019. [DOI: 10.1002/hon.123_2629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Zhao LJ, Xu ZN, Li YQ, Chen YH, Qin H. A fast key parameter extraction algorithm for long fiber distributed sensing based on Brillouin scattering. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2019; 90:066101. [PMID: 31255036 DOI: 10.1063/1.5049738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Accepted: 04/15/2019] [Indexed: 06/09/2023]
Abstract
A fast key parameter extraction algorithm is proposed to improve the real-time performance of temperature and strain measurements when performing Brillouin scattering-based fiber-distributed sensing. The algorithm uses a new initial value method that takes the extracted key parameters of the current point in the fiber as the initial guesses for the next point. Based on the old and new initial value method, the existing objective method, optimization algorithm, and convergence criterion, the key parameter extraction algorithms developed are implemented in Matlab using the typical Lorentzian, Gaussian, and pseudo-Voigt profiles. These algorithms are used to extract the parameters over a large range of measured Brillouin spectra for the entire fiber with different averaging times. The results reveal that apart from the case when the frequency sweep spans is less than the linewidth and the pseudo-Voigt profile is used (in this case, the mean computation time of the proposed algorithm is 1.1% larger than that of the referenced algorithm), the proposed algorithm not only ensures high accuracy in extracting the key parameters, but also improves the arithmetic efficiency by 16.3%-49.1%.
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Qin H, Xu X, Zou J, Zhao X, Wu H, Zha Q, Chen S, Kang Y, Jiang H. Krebs von den Lungen-6 associated with chest high-resolution CT score in evaluation severity of patients with interstitial lung disease. Pulmonology 2019; 25:143-148. [DOI: 10.1016/j.pulmoe.2018.05.008] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Revised: 04/28/2018] [Accepted: 05/23/2018] [Indexed: 12/18/2022] Open
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Gui QL, Wang YS, Huang S, Wan Y, Wang HP, Zhu ZG, Li MM, Zhu HY, Tao QS, Shen YY, Zhang Q, Qin H. [Infiltration of tumor associated macrophages in multiple myeloma and its clinical significance]. ZHONGHUA XUE YE XUE ZA ZHI = ZHONGHUA XUEYEXUE ZAZHI 2019; 39:122-127. [PMID: 29562446 PMCID: PMC7342570 DOI: 10.3760/cma.j.issn.0253-2727.2018.02.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
目的 探讨肿瘤相关性巨噬细胞(TAM)在多发性骨髓瘤(MM)中的临床意义及其与肿瘤血管生成、免疫抑制的关系。 方法 以2015年8月至2017年6月就诊的70例MM患者为观察对象,以20例良性血液病(缺铁性贫血13例,巨幼细胞性贫血7例)患者为对照,采用免疫组化法检测骨髓标本中CD163、CD34、VEGF的表达,采用流式细胞术检测Treg细胞比例,采用ELISA法检测IL-10水平,结合临床特征进行分析。 结果 ①70例患者中,男31例,女39例,中位年龄65(50~78)岁。MM患者组的TAM浸润密度、微血管密度(MVD)、VEGF表达水平、Treg细胞比例及IL-10水平均较对照组升高(P值均<0.05)。②在MM患者组中,疾病稳定组(15例)患者的上述指标均较初诊组(35例)和复发难治组(20例)低(P值均<0.05);后两组差异无统计学意义(P值均>0.05)。③35例初诊MM患者中27例完成4个疗程治疗,有效组(15例)治疗后TAM浸润密度较治疗前明显下降,差异有统计学意义[(20.20±7.66)对(28.87±11.97)个/高倍,t=2.362,P=0.025];无效组(12例)治疗前后差异无统计学意义[(42.00±13.76)对(48.25±13.59)个/高倍,t=1.119,P=0.275]。④硼替佐米方案治疗有效组患者(21例次)的TAM浸润密度较非硼替佐米方案治疗有效组(18例次)减低[(16.52±4.26)对(19.27±5.82)个/高倍,t=1.662,P=0.170]。⑤MM患者的TAM浸润密度与MVD、VEGF表达水平、Treg细胞比例及IL-10水平呈正相关(P值均<0.001)。 结论 骨髓微环境中浸润的TAM与MM发生、发展、疗效及治疗耐药有关,其作用机制可能与TAM促进肿瘤血管形成及抑制免疫反应有关。
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Chen S, Wang Y, Qin H, Lin J, Xie L, Chen S, Liang J, Xu J. Downregulation of miR-633 activated AKT/mTOR pathway by targeting AKT1 in lupus CD4+ T cells. Lupus 2019; 28:510-519. [PMID: 30760089 DOI: 10.1177/0961203319829853] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Background Accumulating evidence suggests that the AKT/mTOR pathway plays an important role in the pathogenesis of systemic lupus erythematosus (SLE) through activating T cells, and there are few studies looking into the role of microRNA (miRNAs) in the mechanism. We first found that miR-633 expression in CD4+T cells of SLE patients was significantly reduced. Objective To investigate the role of miR-633 in the AKT/mTOR pathway in lupus CD4+T cells. Methods Samples of 17 SLE cases and 16 healthy controls were collected to detect the expression of miR-633, AKT1, mTOR mRNA and proteins by quantitative polymerase chain reaction (qPCR) and Western-blot, respectively. To determine whether AKT1 is a direct target of miR-633, a luciferase assay was performed. In vitro, AKT1 siRNA, miR-633 mimics/inhibitors or negative controls were transfected to Jurkat cells, human primary CD4+T cells and lupus CD4+T cells. RNA and proteins were extracted after 48 h, and levels of AKT/mTOR pathway markers and downstream multiple cytokines were detected by qPCR or Western-blot. Results In SLE patients, the miR-633 levels in CD4+T cells were significantly decreased and negatively correlated with SLEDAI. AKT1, mTOR mRNA and proteins were all up-regulated. The degree of downregulation of miR-633 was correlated negatively with AKT1 mRNA. The luciferase assay proved that AKT1 is a direct target of miR-633. In Jurkat and lupus CD4+T cells, overexpression of miR-633 could result in lower levels of AKT1 and mTOR. Inhibition of miR-633 expression in primary CD4+T cells caused reverse effects, and protein levels of p-AKT, p-mTOR, and p-S6RP increased. Moreover, among various cytokines, the expression of IL-4, IL-17, and IFN-γ mRNA was raised. Conclusion Our study suggests that miR-633 deletion can activate the AKT/mTOR pathway by targeting AKT1 to participate in the pathogenesis of SLE.
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Yang F, Wang S, Qin H, Tan K, Sun QQ, Wang LX, Nie SS, Liu JN, Chen Y, Zhang M, Chen YY. [Frailty progress and related factors in the elderly living in community: a prospective study]. ZHONGHUA LIU XING BING XUE ZA ZHI = ZHONGHUA LIUXINGBINGXUE ZAZHI 2019; 40:186-190. [PMID: 30744270 DOI: 10.3760/cma.j.issn.0254-6450.2019.02.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Objective: To investigate frailty progress status and related factors in the elderly living in communities. Methods: A cohort of elderly people aged 65 and over in Pingyi community of Dujiangyan, Sichuan province, was established. Face-to-face questionnaire survey was conducted by trained interviewers. The frailty status, cognitive function, nutrition status and other functions of the subjects surveyed were evaluated at baseline survey and during follow-up. The socio-demographic and clinical characteristics of the subjects surveyed were assessed at baseline survey. Binary logistic regressions were used to identify factors associated with frailty progress. Results: A total of 653 elderly people were surveyed in January 2014, and 507 elderly people were followed up while 146 elderly people terminated further follow-up in January 2017. The prevalence rates of frailty and pre-frailty at baseline survey were 11.2% (n=57) and 26.2% (n=133), respectively. After 3 years, 205 subjects (40.4%) surveyed experienced frailty progress, 276 (54.5%) remained to be in frailty state at baseline survey, and 26 (5.1%) had improvement. Disability (OR=8.27, 95%CI: 1.62-42.26), visual problem (OR=2.02, 95%CI: 1.27-3.22), cognitive impairment (OR=1.94, 95%CI: 1.08-3.48), poor self-rated health (OR=1.89, 95%CI: 1.07-3.31), chronic pain (OR=1.57, 95%CI: 1.03-2.40) and older age (OR=1.12, 95%CI: 1.08-1.17) were independently associated with the progress of frailty. In contract, overweight was a protective factor (OR=0.54, 95%CI: 0.34-0.85). Conclusions: Frailty is a dynamic syndrome affected by several socio-demographic factors and geriatric factors. The results of the study can be used in the prevention of frailty progress in the elderly in communities.
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Cheng Y, Wang Q, Li K, Shi J, Wu L, Han B, Chen G, He J, Wang J, Qin H, Li X. OA13.03 Anlotinib as Third-Line or Further-Line Treatment in Relapsed SCLC: A Multicentre, Randomized, Double-Blind Phase 2 Trial. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.08.308] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Feng F, Cheng Q, Zhang D, Li B, Qin H, Xu C, Han M, Yu Y, Li Z, Li JY, Qiu Z, Xiong L, Liu C, Li F, Yi B, Jiang X. Targeted therapy based on the genetic alterations prolongs the progression-free survival of patients with advanced biliary tract cancer. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy282.137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Liang J, Gao P, Lin Y, Song L, Qin H, Sui B. Susceptibility-weighted imaging in post-treatment evaluation in the early stage in patients with acute ischemic stroke. J Int Med Res 2018; 47:196-205. [PMID: 30238823 PMCID: PMC6384492 DOI: 10.1177/0300060518799019] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Objective This study aimed to investigate the association between abnormal signs on susceptibility-weighted imaging (SWI) and post-treatment outcome in the early stage in patients with acute ischemic stroke. Methods Thirty-seven patients with middle cerebral artery territory infarction were recruited. Baseline and 24-hour follow-up magnetic resonance imaging was performed. Pre- and 24-hour post-treatment clinical conditions were assessed with the National Institutes of Health Stroke Scale (NIHSS) score. Prominent vessel sign (PVS) on SWI and infarcted areas on diffusion-weighted imaging (DWI) were assessed using the Alberta Stroke Program Early CT (ASPECT) score system. Susceptibility vessel sign (SVS) was evaluated and recorded. The associations between image abnormalities and clinical scores were analyzed. Results PVS was found in 35 patients and SVS in seven patients. The extent of PVS was significantly correlated with the post-treatment DWI ASPECT score (r = 0.79), but not with the post-treatment NIHSS score or the post−pre NIHSS difference score. The presence of SVS was significantly correlated with the post-treatment NIHSS score (r = 0.41). Conclusion PVS might be a useful predictor of early imaging prognosis and infarct growth in patients with acute ischemic stroke. SVS is related to a poor early outcome and could be useful for assessing stroke.
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Huang L, Qin H, Shen T. The clinical effect and microbial analysis in constipation and synbiotics treatment. Clin Nutr 2018. [DOI: 10.1016/j.clnu.2018.06.1669] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Song W, Zhao L, Tao Y, Guo X, Jia J, He L, Huang Y, Zhu Y, Chen P, Qin H. The interruptive effect of electric shock on odor response requires mushroom bodies in Drosophila melanogaster. GENES BRAIN AND BEHAVIOR 2018; 18:e12488. [PMID: 29808570 DOI: 10.1111/gbb.12488] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2018] [Revised: 05/01/2018] [Accepted: 05/24/2018] [Indexed: 11/28/2022]
Abstract
Nociceptive stimulus involuntarily interrupts concurrent activities. This interruptive effect is related to the protective function of nociception that is believed to be under stringent evolutionary pressure. To determine whether such interruptive effect is conserved in invertebrate and potentially uncover underlying neural circuits, we examined Drosophila melanogaster. Electric shock (ES) is a commonly used nociceptive stimulus for nociception related research in Drosophila. Here, we showed that background noxious ES dramatically interrupted odor response behaviors in a T-maze, which is termed blocking odor response by electric shock (BOBE). The interruptive effect is not odor specific. ES could interrupt both odor avoidance and odor approach. To identify involved brain areas, we focused on the odor avoidance to 3-OCT. By spatially abolishing neurotransmission with temperature sensitive ShibireTS1 , we found that mushroom bodies (MBs) are necessary for BOBE. Among the 3 major MB Kenyon cell (KCs) subtypes, α/β neurons and γ neurons but not α'/β' neurons are required for normal BOBE. Specifically, abolishing the neurotransmission of either α/β surface (α/βs ), α/β core (α/βc ) or γ dorsal (γd ) neurons alone is sufficient to abrogate BOBE. This pattern of MB subset requirement is distinct from that of aversive olfactory learning, indicating a specialized BOBE pathway. Consistent with this idea, BOBE was not diminished in several associative memory mutants and noxious ES interrupted both innate and learned odor avoidance. Overall, our results suggest that MB α/β and γ neurons are parts of a previously unappreciated central neural circuit that processes the interruptive effect of nociception.
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Barakat HM, Abd Elgawad MA, Qin H, Yan T. Limit Theory of Bivariate Generalized Order Statistics with Random Sample Size. MATHEMATICAL METHODS OF STATISTICS 2018. [DOI: 10.3103/s1066530718010039] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Qin H, Han C, Jin Z, Wu L, Deng H, Zhu G, Zhong W. Vertical distribution and community composition of anammox bacteria in sediments of a eutrophic shallow lake. J Appl Microbiol 2018. [DOI: 10.1111/jam.13758] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Afzal A, Tecson K, Jamil A, Felius J, Qin H, Garcha P, Hall S, Carey S. Clinical Characteristics of Sleep Apnea Syndrome in Heart Transplant Recipients. J Heart Lung Transplant 2018. [DOI: 10.1016/j.healun.2018.01.855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Harmon D, Tecson K, Jamil A, Qin H, Felius J, Lima B, Gonzalez-Stawinski G, Joseph S, Hall S. Advanced Heart Failure Therapies in Patients Aged ≥65 Years: Ventricular Assist Device vs. Heart Transplantation. J Heart Lung Transplant 2018. [DOI: 10.1016/j.healun.2018.01.1118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Gao R, Kong C, Li H, Huang L, Qu X, Qin N, Qin H. Dysbiosis signature of mycobiota in colon polyp and colorectal cancer. Eur J Clin Microbiol Infect Dis 2017; 36:2457-2468. [DOI: 10.1007/s10096-017-3085-6] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2017] [Accepted: 07/31/2017] [Indexed: 02/06/2023]
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Liu J, Yan Z, Pu Y, Shiu WS, Wu J, Chen R, Leng X, Qin H, Liu X, Jia B, Song L, Wang Y, Miao Z, Wang Y, Liu L, Cai XC. Functional assessment of cerebral artery stenosis: A pilot study based on computational fluid dynamics. J Cereb Blood Flow Metab 2017; 37:2567-2576. [PMID: 27702878 PMCID: PMC5531352 DOI: 10.1177/0271678x16671321] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The fractional pressure ratio is introduced to quantitatively assess the hemodynamic significance of severe intracranial stenosis. A computational fluid dynamics-based method is proposed to non-invasively compute the FPRCFD and compared against fractional pressure ratio measured by an invasive technique. Eleven patients with severe intracranial stenosis considered for endovascular intervention were recruited and an invasive procedure was performed to measure the distal and the aortic pressure ( Pd and Pa). The fractional pressure ratio was calculated as [Formula: see text]. The computed tomography angiography was used to reconstruct three-dimensional (3D) arteries for each patient. Cerebral hemodynamics was then computed for the arteries using a mathematical model governed by Navier-Stokes equations and with the outflow conditions imposed by a model of distal resistance and compliance. The non-invasive [Formula: see text], [Formula: see text], and FPRCFD were then obtained from the computational fluid dynamics calculation using a 16-core parallel computer. The invasive and non-invasive parameters were tested by statistical analysis. For this group of patients, the computational fluid dynamics method achieved comparable results with the invasive measurements. The fractional pressure ratio and FPRCFD are very close and highly correlated, but not linearly proportional, with the percentage of stenosis. The proposed computational fluid dynamics method can potentially be useful in assessing the functional alteration of cerebral stenosis.
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Tan K, Nie S, Sun Q, Qin H, Wang L, Wang S. FRAILTY IN COMMUNITY-DWELLING SOUTHWEST OLD CHINESE: PREVALENCE AND RISK FACTOR ANALYSIS. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.4139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
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