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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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Hu Y, Chen W, Wu L, Jiang L, Qin H, Tang N. Hypoxic preconditioning improves the survival and neural effects of transplanted mesenchymal stem cells via CXCL12/CXCR4 signalling in a rat model of cerebral infarction. Cell Biochem Funct 2019; 37:504-515. [PMID: 31368195 DOI: 10.1002/cbf.3423] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Revised: 04/17/2019] [Accepted: 06/18/2019] [Indexed: 11/11/2022]
Abstract
The treatment of neural deficiency after cerebral infarction is challenging, with limited therapeutic options. The transplantation of mesenchymal stem cells (MSCs) to the ischemic penumbra is a potential therapeutic approach. In the present study, a cerebral infarction model was generated by performing middle cerebral artery occlusion (MCAO) in SD rats. The expression of CXCR4 increased, and the number of MSCs migrating to the peri-infarct area was higher in rats transplanted with preconditioned MSCs than in rats transplanted with untreated MSCs. The rate of apoptosis, as evaluated by TUNEL staining and immunoblotting assays, was reduced in rats receiving preconditioned MSCs. A significant amelioration of neural regeneration and improved neurological function were observed in rats injected with preconditioned MSCs compared with those injected with untreated MSCs. However, the application of an siRNA targeting CXCL12 significantly inhibited the protective role of preconditioned MSCs against apoptosis and promoted the migration of MSCs to the ischemic area, leading to impaired neuronal regeneration and limited recovery of neuronal function. Hypoxic preconditioning of MSCs prior to transplantation suppressed apoptosis and increased their migration abilities, leading to the promotion of neuronal regeneration and improvement in neural function after transplantation. This preconditioning strategy may be considered as a potential approach for the modification of MSCs prior to cell transplantation therapy in patients with cerebral infarction. SIGNIFICANCE OF THE STUDY: We found that hypoxic preconditioning of MSCs improved their ability to promote neuronal regeneration and the recovery of neuronal function. Moreover, we showed that CXCR4 inhibited apoptosis, improved cell homing, and promoted neuronal differentiation, without influencing angiogenesis. Our study provides a relatively safe preconditioning method for potential use for cell transplantation therapy in ischemic cerebral infarction. The results presented here will facilitate the development of novel strategies and techniques to improve the tolerance and migration ability of transplanted cells for the treatment of cerebral infarction sequelae.
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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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Xu H, Sheng R, Xing X, Zhang W, Hou H, Liu Y, Qin H, Chen C, Wei W. Characterization of Fungal nirK-Containing Communities and N 2O Emission From Fungal Denitrification in Arable Soils. Front Microbiol 2019; 10:117. [PMID: 30778342 PMCID: PMC6369356 DOI: 10.3389/fmicb.2019.00117] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2018] [Accepted: 01/18/2019] [Indexed: 11/25/2022] Open
Abstract
Fungal denitrifiers play important roles in soil nitrogen cycling, but we have very limited knowledge about their distribution and functions in ecosystems. In this study, three types of arable soils were collected across different climate zones in China, including quaternary red clay soils, alluvial soils, and black soils. The composition and abundance of fungal nirK-containing denitrifiers was determined by MiSeq high-throughput sequencing and qPCR, respectively. Furthermore, a substrate-induced inhibition approach was used to explore N2O emissions from fungal denitrification. The results showed that the arable soils contained a wide range of nirK-containing fungal denitrifiers, with four orders and eight genera. Additionally, approximately 57.30% of operational taxonomic unit (OTUs) belonged to unclassified nirK-containing fungi. Hypocreales was the most predominant order, with approximately 40.51% of the total number of OTUs, followed by Sordariales, Eurotiales, and Mucorales. It was further indicated that 53% of fungal nirK OTUs were shared by the three types of soils (common), and this group of fungi comprised about 98% of the total relative abundance of the nirK-containing population, indicating that the distribution of fungal nirK-containing denitrifiers was quite homogenous among the soil types. These common OTUs were determined by multiple soil characteristics, while the composition of unique OTUs was manipulated by the specific properties of each soil type. Furthermore, fungal N2O emissions were significantly and positively correlated with fungal nirK abundance in the soils, whereas it was not clearly related to fungal nirK compositions. In conclusion, although the arable soils hosted diverse nirK-containing fungal denitrifiers, fungal nirK compositions were highly homogenous among the soil types, which could be a consequence of enduring agricultural practices. The abundance of fungal nirK-containing denitrifiers, rather than their composition, may play more significant roles in relation to N2O emission from fungal denitrification.
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Qin H, Li X, Zhang X, Guo Z. Preparation and performance testing of superhydrophobic flame retardant cotton fabric. NEW J CHEM 2019. [DOI: 10.1039/c9nj00307j] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A superhydrophobic flame retardant coating was fabricated using a simple method of depositing a DAP coating and a H-ZrO2@PDMS coating on the surface of a cotton fabric. Thermal stability tests and vertical burning tests demonstrate the excellent flame retardancy of the coating.
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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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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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Wang EH, Ping YJ, Li ZR, Qin H, Xu ZJ, Che CM. Iron Porphyrin Catalyzed Insertion Reaction of N-Tosylhydrazone-Derived Carbenes into X–H (X = Si, Sn, Ge) Bonds. Org Lett 2018; 20:4641-4644. [DOI: 10.1021/acs.orglett.8b01931] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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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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Qin H, Jiang X, Huang H, Liu W, Li J, Xiao Y, Mao L, Fu Z, Yu N, Yin D. Ionic liquid-assisted catalytic oxidation of anethole by copper- and iron-based metal-organic frameworks. MOLECULAR CATALYSIS 2017. [DOI: 10.1016/j.mcat.2017.07.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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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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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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Gao R, Kong C, Huang L, Li H, Qu X, Liu Z, Lan P, Wang J, Qin H. Mucosa-associated microbiota signature in colorectal cancer. Eur J Clin Microbiol Infect Dis 2017; 36:2073-2083. [PMID: 28600626 DOI: 10.1007/s10096-017-3026-4] [Citation(s) in RCA: 71] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Accepted: 05/22/2017] [Indexed: 12/15/2022]
Abstract
The aim of this study was to explore the gut microbiota profiles of colorectal cancer (CRC) patients and to examine the relationship between gut microbiota and other key molecular factors involved in CRC tumorigenesis. In this study, a 16S rDNA sequencing platform was used to identify possible differences in the microbiota signature between CRC and adjacent normal mucosal tissue. Differences in the microbiota composition in different anatomical colorectal tumor sites and their potential association with KRAS mutation were also explored. In this study, the number of Firmicutes and Actinobacteria decreased, while the number of Fusobacteria increased in the gut of CRC patients. In addition, at the genus level, Fusobacterium was identified as the key contributor to CRC tumorigenesis. In addition, a different distribution of gut microbiota in ascending and descending colon cancer samples was observed. Lipopolysaccharide biosynthesis-associated microbial genes were enriched in tumor tissues. Our study suggests that specific mucosa-associated microbiota signature and function are significantly changed in the gut of CRC patients, which may provide insight into the progression of CRC. These findings could also be of value in the creation of new prevention and treatment strategies for this type of cancer.
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Wu N, Qin H, Wang M, Bian Y, Dong B, Sun G, Zhao W, Chang G, Xu Q, Chen G. Variations in endothelin receptor B subtype 2 (EDNRB2) coding sequences and mRNA expression levels in 4 Muscovy duck plumage colour phenotypes. Br Poult Sci 2017; 58:116-121. [DOI: 10.1080/00071668.2016.1259531] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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Gao R, Gao Z, Huang L, Qin H. Gut microbiota and colorectal cancer. Eur J Clin Microbiol Infect Dis 2017; 36:757-769. [PMID: 28063002 PMCID: PMC5395603 DOI: 10.1007/s10096-016-2881-8] [Citation(s) in RCA: 94] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Accepted: 12/14/2016] [Indexed: 02/07/2023]
Abstract
The gut microbiota is considered as a forgotten organ in human health and disease. It maintains gut homeostasis by various complex mechanisms. However, disruption of the gut microbiota has been confirmed to be related to gastrointestinal diseases such as colorectal cancer, as well as remote organs in many studies. Colorectal cancer is a multi-factorial and multi-stage involved disorder. The role for microorganisms that initiate and facilitate the process of colorectal cancer has become clear. The candidate pathogens have been identified by culture and next sequencing technology. Persuasive models have also been proposed to illustrate the complicated and dynamic time and spatial change in the carcinogenesis. Related key molecules have also been investigated to demonstrate the pathways crucial for the development of colorectal cancer. In addition, risk factors that contribute to the tumorigenesis can also be modulated to decrease the susceptibility for certain population. In addition, the results of basic studies have also translated to clinical application, which displayed a critical value for the diagnosis and therapy of colorectal cancer. In this review, we not only emphasize the exploration of the mechanisms, but also potential clinical practice implication in this microbiota era.
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Zhang Z, Zhang W, Yang H, Sheng R, Wei W, Qin H. Elevated N 2O emission by the rice roots: based on the abundances of narG and bacterial amoA genes. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:2116-2125. [PMID: 27812967 DOI: 10.1007/s11356-016-7993-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2016] [Accepted: 10/25/2016] [Indexed: 06/06/2023]
Abstract
Rice fields are an important source of nitrous oxide (N2O), where rice plants could act as a key factor controlling N2O fluxes during the flooding-drying process; however, the microbial driving mechanisms are unclear. In this study, specially designed equipment was used to grow rice plants and collect emitted N2O from the root-growing zone (zone A), root-free zones (zones B, C, and D) independently, at tillering and booting stages under flooding and drying conditions. Soil samples from the four zones were also taken separately. Nitrifying and denitrifying community abundances were detected using quantitative polymerase chain reaction (qPCR). The N2O emission increased significantly along with drying, but the N2O emission capabilities varied among the four zones under drying, while zone B possessed the highest N2O fluxes that were 2.7~4.5 times higher than those from zones C and D. However, zone A showed N2O consumption potential. Notably, zone B also harbored the highest numbers of narG-containing denitrifiers and amoA-containing nitrifiers under drying at both tillering and booting stages. This study demonstrates that drying caused significant increase in N2O emission from rhizosphere soil, in which the higher abundance of AOB would help to produce more nitrate and significantly higher narG-containing microbes would drive more N2O production and emission.
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Qin H, Xiao J, Gao X, Wang H. Horse-Expert: An aided expert system for diagnosing horse diseases. Pol J Vet Sci 2016; 19:907-915. [PMID: 28092609 DOI: 10.1515/pjvs-2016-0112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
In contrast to the rapid development of the horse husbandry in China, the ability of horse veterinarians to diagnose diseases has not been improved and only a few domain experts have considerable expertise. At present, many expert systems have been developed for diseases diagnosis, but few for horse diseases diagnosis have been studied in depth. This paper presents the design and development of a computer-aided expert system for diagnosing horse diseases. We suggest an approach for diagnosis of horse diseases based on the analysis of diagnostic characteristics and the experiential knowledge of domain experts. It is based on using evidence-weighted uncertainty reasoning theory, which is a combination of evidence theory and an uncertainty pass algorithm of confidence factors. It enables drawing of inferences with atypical clinical signs and the uncertainty of the user's subjective understanding. It reduces the influence of subjective factors on diagnostic accuracy. The system utilizes a user friendly interface for users and requests a confidence factor from users when feedback is given to the system. Horse-Expert combines the confidence factors with weight factors assigned to clinical signs by experts during the knowledge acquisition process to make diagnostic conclusions. The system can diagnose 91 common horse diseases, and provides suggestions for appropriate treatment options. In addition, users can check the medical record through statistical charts. The system has been tested in seven demonstration areas of Xinjiang province in northwestern China. By constantly maintaining and updating the knowledge base, the system has potential application in veterinary practice.
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Qin H, Zhao L, Xu YH. [Investigation and analysis on the status quo of 27 occupational health inspection agencies inWuxi]. ZHONGHUA LAO DONG WEI SHENG ZHI YE BING ZA ZHI = ZHONGHUA LAODONG WEISHENG ZHIYEBING ZAZHI = CHINESE JOURNAL OF INDUSTRIAL HYGIENE AND OCCUPATIONAL DISEASES 2016; 34:822-824. [PMID: 28043268 DOI: 10.3760/cma.j.issn.1001-9391.2016.11.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
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81
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Qin H, Chen X, Tang Y, Hou H, Sheng R, Shen J. Modified method for the extraction of mRNA from paddy soils. Biotechnol Lett 2016; 38:2163-2167. [PMID: 27627898 DOI: 10.1007/s10529-016-2208-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2016] [Accepted: 08/31/2016] [Indexed: 11/26/2022]
Abstract
OBJECTIVE Paddy soils contain relatively greater organic matter and water contents than other soils thereby limiting effective mRNA extraction. A modification of the conventional mRNA soil extraction method specific to paddy soils is described. RESULTS Two main modifications for co-extraction of DNA and RNA are: (1) addition of 20 % (w/v) sodium dodecyl sulphate to 10 % (w/v) hexadecyltrimethylammonium bromide extraction buffer, and (2) fresh soil, initially frozen at -80 °C, is immediately immersed in extraction buffer. The high-quality total RNA extracted can be directly used in downstream analyses without an additional step to remove humic acid. RNA purification was conducted to remove 5S rRNA, and the mRNA was enriched by selectively digesting rRNA. cDNA synthesised by reverse transcriptase was not contaminated by the reagents or genomic DNA. CONCLUSION The modified method for mRNA extraction from paddy soil is suitable for analysing the expression of microbial genes from fresh paddy soil.
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Wang T, Li G, Chen J, Lin Z, Qin H, Ji J. Three-dimensional stress In vitro promotes the proliferation and differentiation of periodontal ligament stem cells implanted by bioactive glass. Cell Mol Biol (Noisy-le-grand) 2016; 62:62-67. [PMID: 27609476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Accepted: 08/18/2016] [Indexed: 06/06/2023]
Abstract
To analyze the biological and mechanical microenvironment on the directional differentiation of periodontal ligament stem cells (PDLSCs) In vitro. PDLSCs were cultured in three-dimensional stress system In vitro for 1, 2 and 3 weeks. Methods like immunohistochemistry and flow cytometry were adopted and the proliferation and differentiation situation of PDLSCs were determined. Bioactive glass (BAG) of 0%, 10%, 20%, 30% and 40% was implanted into PDLSCs with or without three-dimensional stress for 3 weeks, respectively. The proliferation and differentiation situation of PDLSCs were determined. The mRNA levels of Alkaline phosphatase (ALP), Type I Collagen (COL I), Type II Collagen (COL II), Bone sialoprotein (BSP), Osteocalcin (OCN) and Osteopontin (OPN) were determined by semi-quantitative RT-PCR. 30% BAG and three-dimensional stress for 3 weeks promoted the proliferation and differentiation of PDLSCs mostly. PDLSCs induced by BAG and 3D force and the control all expressed the mRNA of ALP, COLⅠand COL Ⅱ. The BAG and three-dimensional stress induced PDLSCs also expressed the mRNA of BSP, OCN and OPN. BAG and three-dimensional stress indicated microenvironment In vitro can promote the proliferation and differentiation of PDLSCs.
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Theodorou IG, Jawad ZAR, Qin H, Aboagye EO, Porter AE, Ryan MP, Xie F. Significant metal enhanced fluorescence of Ag2S quantum dots in the second near-infrared window. NANOSCALE 2016; 8:12869-73. [PMID: 27314986 DOI: 10.1039/c6nr03220f] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
The amplification of light in NIR-II from Ag2S QDs via metal enhanced fluorescence (MEF) is reported for the first time. Significant fluorescence enhancement of over 100 times for Ag2S QDs deposited on Au-nanostructured arrays, paves the way for novel sensing and imaging applications based on Ag2S QDs, with improved detection sensitivity and contrast enhancement.
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Zhu X, Xiao Y, Jiang X, Li J, Qin H, Huang H, Zhang Y, He X, Wang K. A ratiometric nanosensor based on conjugated polyelectrolyte-stabilized AgNPs for ultrasensitive fluorescent and colorimetric sensing of melamine. Talanta 2016; 151:68-74. [DOI: 10.1016/j.talanta.2016.01.012] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2015] [Revised: 12/30/2015] [Accepted: 01/08/2016] [Indexed: 02/02/2023]
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Qin H, Samuels JF, Wang Y, Zhu Y, Grados MA, Riddle MA, Greenberg BD, Knowles JA, Fyer AJ, McCracken JT, Murphy DL, Rasmussen SA, Cullen BA, Piacentini J, Geller D, Stewart SE, Pauls D, Bienvenu OJ, Goes FS, Maher B, Pulver AE, Valle D, Lange C, Mattheisen M, McLaughlin NC, Liang KY, Nurmi EL, Askland KD, Nestadt G, Shugart YY. Whole-genome association analysis of treatment response in obsessive-compulsive disorder. Mol Psychiatry 2016; 21:270-6. [PMID: 25824302 PMCID: PMC5027902 DOI: 10.1038/mp.2015.32] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2014] [Revised: 01/16/2015] [Accepted: 02/11/2015] [Indexed: 12/16/2022]
Abstract
Up to 30% of patients with obsessive-compulsive disorder (OCD) exhibit an inadequate response to serotonin reuptake inhibitors (SRIs). To date, genetic predictors of OCD treatment response have not been systematically investigated using genome-wide association study (GWAS). To identify specific genetic variations potentially influencing SRI response, we conducted a GWAS study in 804 OCD patients with information on SRI response. SRI response was classified as 'response' (n=514) or 'non-response' (n=290), based on self-report. We used the more powerful Quasi-Likelihood Score Test (the MQLS test) to conduct a genome-wide association test correcting for relatedness, and then used an adjusted logistic model to evaluate the effect size of the variants in probands. The top single-nucleotide polymorphism (SNP) was rs17162912 (P=1.76 × 10(-8)), which is near the DISP1 gene on 1q41-q42, a microdeletion region implicated in neurological development. The other six SNPs showing suggestive evidence of association (P<10(-5)) were rs9303380, rs12437601, rs16988159, rs7676822, rs1911877 and rs723815. Among them, two SNPs in strong linkage disequilibrium, rs7676822 and rs1911877, located near the PCDH10 gene, gave P-values of 2.86 × 10(-6) and 8.41 × 10(-6), respectively. The other 35 variations with signals of potential significance (P<10(-4)) involve multiple genes expressed in the brain, including GRIN2B, PCDH10 and GPC6. Our enrichment analysis indicated suggestive roles of genes in the glutamatergic neurotransmission system (false discovery rate (FDR)=0.0097) and the serotonergic system (FDR=0.0213). Although the results presented may provide new insights into genetic mechanisms underlying treatment response in OCD, studies with larger sample sizes and detailed information on drug dosage and treatment duration are needed.
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Wang ZL, Chai RF, Yang WS, Liu Y, Qin H, Wu H, Zhu XF, Wang YX, Dangmurenjiafu G. ApoE and S-100 expression and its significance in the brain tissue of rats with focal contusion. GENETICS AND MOLECULAR RESEARCH 2015; 14:19275-81. [PMID: 26782580 DOI: 10.4238/2015.december.29.37] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
This study explored the effect of focal cerebral contusion on the expression of ApoE and S-100, and its significance in determining the time of brain injury. Based on a rat model of cerebral contusion, immunohistochemistry was used to analyze the expressions of S-100 and ApoE at different time points after injury. Thirty minutes following cerebral contusion, ApoE protein expression was significantly increased in cortex neurons (P < 0.01), and S-100 protein expression was significantly (P < 0.001) elevated 2 h after cerebral contusion. Over time, the number of ApoE and S-100 positively expressing cells gradually increased. Three days after injury, ApoE was widely distributed throughout the tissue and the number of ApoE-positive cells and staining intensity reached a peak. ApoE expression decreased after this time point. Five days after cerebral contusion, the number of S-100-positive cells reached a peak level of expression higher than that in the control group. Our data demonstrate that the expression of ApoE and S-100 correlated with the progression of focal cerebral contusion. This suggests that both proteins may serve as effective biomarkers of focal cerebral contusions.
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Xiao Y, Chen F, Zhu X, Qin H, Huang H, Zhang Y, Yin D, He X, Wang K. Ionic liquid-assisted formation of lanthanide metal-organic framework nano/microrods for superefficient removal of Congo red. Chem Res Chin Univ 2015. [DOI: 10.1007/s40242-015-5237-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Qin H, Cai A, Xi H, Yuan J, Chen L. ZnRF3 induces apoptosis of gastric cancer cells by antagonizing Wnt and Hedgehog signaling. Panminerva Med 2015; 57:167-175. [PMID: 25923840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
AIM The aim of this paper was to investigate the function an importance of E3-ubiquitin ligase ZnRF3 in the progression of cancer cell growth. METHODS A total of 58 patients (44 males and 14 females) were enrolled in the study and their gastric tumors were removed surgically and were staged by the TNM approach. Among these patients, 43 patients died and 15 survived at the time of this study. The tumors and the paracancerous tissues were examined by immunohostochemistry for the expression of ZnRF3. We assessed the expression of ZnRF3 in gastric tumors and paracancerous tissues from our patients and related this to patient survival. RESULTS A large proportion of malignant cancers of the stomach are gastric adenocarcinoma type. In spite of many studies, the molecular basis for this cancer is still unclear. Deregulated cell proliferative signaling via Wnt/β-catenin and Hedgehog pathways is considered important in the pathogenesis of many cancers including the gastric cancer. Recent studies identified ZnRF3 protein, which is a E3-ubiquitin ligase and which is either deleted or mutated in cancers, to inhibit Wnt signaling. However, the significance of ZnRF3 in the control of gastric cancer and whether it also regulates Hedgehog signaling pathway, is not known. ZnRF3 expression was much higher in tumors from aged patients. Male patients showed higher mortality than the females. Mechanistic studies using normal gastric cells (GES1) and gastric cancer cells (MGC-803) infected with either AdZnRF3 or AdGFP viral vectors, revealed that ZnRF3 overexpression causes significantly more apoptosis and lowered proliferation of cancer cells. ZnRF3 overexpression led to greatly reduced levels of Lgr5, a component of Wnt signaling and also Gli1, a component of Hedgehog signaling. Thus, ZnRF3 negatively influences both the Wnt and Hedgehog proliferative pathways and probably this way it negatively regulates cancer progression. These results suggest the importance of normal ZnRF3 function in checking the progression of cancer cell growth and indicate that a lack of this protein can lead to poorer clinical outcomes for gastric cancer patients. CONCLUSION We observed a clear relationship between ZnRF3 expression in paracancerous tissue and tumor size.
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Fu C, Zhang S, Su J, Luo S, Zheng H, Wang J, Qin H, Chen Y, Shen Y, Hu X, Fan X, Luo J, Xie B, Chen R, Chen S. Mutation screening of DUOX2 in Chinese patients with congenital hypothyroidism. J Endocrinol Invest 2015; 38:1219-24. [PMID: 26349762 DOI: 10.1007/s40618-015-0382-8] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Accepted: 08/12/2015] [Indexed: 11/25/2022]
Abstract
BACKGROUND Congenital hypothyroidism (CH) is the most common neonatal endocrine disorder in infancy. Dual oxidase 2 gene (DUOX2) mutations have been reported to be one of the leading genetic causes of CH. AIM The aim of this study was to screen for DUOX2 gene mutations among CH patients in the Guangxi Zhuang Autonomous Region of China and to define the relationships between DUOX2 genotypes and clinical phenotypes. MATERIALS AND METHODS Blood samples were collected from 45 CH patients in Guangxi Zhuang Autonomous Region, China, and genomic DNA was extracted from peripheral blood leukocytes. All exons of the DUOX2 gene together with their exon-intron boundaries were screened by Sanger sequencing. RESULTS Sequencing analysis of DUOX2 in 45 CH patients revealed ten different variants in thirteen individuals. The variants included five known mutations, namely c.3329G>A (p.R1110Q), c.1588A>T (p.K530X), c.2635G>A (p.E879K), c.2524C>T (p.R842X) and c.4027G>T (p.L1343F), and one novel frame shift variant c.3340delC (p.L1114SfsX56), as well as four novel missense variants c.903G>T (p.W301C), c.2048G>T (p.R683L), c.1736T>C (p.L579P) and c.3413C>A (p.A1138D). The variant p.K530X is highly recurrent in our patient cohort but the clinical phenotypes vary greatly among those carrying this variant. Most patients with monoallelic or biallelic DUOX2 pathogenic variants turned out to be cases of transient congenital hypothyroidism (TCH), while three patients with triallelic DUOX2 pathogenic variants were associated with permanent congenital hypothyroidism (PCH). CONCLUSIONS The prevalence of DUOX2 pathogenic variants was high (29 %) among patients with CH in Guangxi, China. Monoallelic and biallelic DUOX2 pathogenic variants were mainly associated with TCH, while triallelic DUOX2 pathogenic variants were associated with PCH. Our study expanded the DUOX2 mutation spectrum, and functional studies of the novel mutations need to be conducted in the future.
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Wang ZL, Xu DS, Wang YX, Qin H, Geng D. Effect of single nucleotide polymorphisms in the ATP-binding cassette B1 gene on the clinical outcome of traumatic brain injury. GENETICS AND MOLECULAR RESEARCH 2015; 14:10948-53. [PMID: 26400323 DOI: 10.4238/2015.september.21.6] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The critical role of ATP-binding cassette B1 (ABCB1) in the function of the blood-brain barrier led us to conducted this prospective study in order to investigate the clinical outcome of patients suffering from severe traumatic brain injury. A total of 182 patients with traumatic brain injury were included in our study. Genotyping of ABCB1 C3435T and G2677T/A was conducted using polymerase chain reaction-restriction fragment length polymorphism. Using multivariate-logistic regression analysis, we found that patients carrying the CT+CC genotype of ABCB1 C3435T were more likely to have a better neurological outcome when compared with the TT genotype (odds ratio = 2.71, 95% confidence interval = 1.12-6.86). However, no significant association was found between the G2677T/A polymorphism and outcome of traumatic brain injury patients. Our study provides important information regarding the prognostic value of ABCB1 C3435T, and the ABCB1 C3435T polymorphism may be used as a predictive marker for the outcome of traumatic brain injury patients.
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Xue P, Zhang R, Qin H, Zhan X, Bian ZH, Li J, Sanders BC. Experimental quantum-walk revival with a time-dependent coin. PHYSICAL REVIEW LETTERS 2015; 114:140502. [PMID: 25910099 DOI: 10.1103/physrevlett.114.140502] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2014] [Indexed: 05/23/2023]
Abstract
We demonstrate a quantum walk with time-dependent coin bias. With this technique we realize an experimental single-photon one-dimensional quantum walk with a linearly ramped time-dependent coin flip operation and thereby demonstrate two periodic revivals of the walker distribution. In our beam-displacer interferometer, the walk corresponds to movement between discretely separated transverse modes of the field serving as lattice sites, and the time-dependent coin flip is effected by implementing a different angle between the optical axis of half-wave plate and the light propagation at each step. Each of the quantum-walk steps required to realize a revival comprises two sequential orthogonal coin-flip operators, with one coin having constant bias and the other coin having a time-dependent ramped coin bias, followed by a conditional translation of the walker.
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McFarland BC, Marks MP, Rowse AL, Gerigk M, Walker PM, Qin H, Benveniste EN. ME-13 * LOSS OF SOCS3 IN MYELOID CELLS DELAYS TUMOR GROWTH AND PROLONGS SURVIVAL IN A SYNGENEIC MODEL OF GLIOBLASTOMA. Neuro Oncol 2014. [DOI: 10.1093/neuonc/nou261.12] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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93
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Liu X, Wang W, Tang C, Li X, Li J, Guo W, Qin H, Qu L, Gao H, Yuan X. Higher Dose Icotinib in Treating Non-Small Cell Lung Cancer Patients Who Progressed with Conventional Dose of Icotinib. Ann Oncol 2014. [DOI: 10.1093/annonc/mdu349.68] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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94
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Wang X, Chen GY, Yang SS, Tian Y, Ge T, Qin H, Han W, Chang HY. Effects of high thoracic epidural anesthesia on ischemic cardiomyopathy cardiac function and autonomic neural function. GENETICS AND MOLECULAR RESEARCH 2014; 13:6813-9. [PMID: 25177960 DOI: 10.4238/2014.august.29.2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
We aimed at observing the effects of high thoracic epidural anesthesia (HTEA) on cardiac structure and function, heart rate variability (HRV), and QT interval variation (QTV) in ischemic cardiomyopathy (ICM) patients with chronic heart failure. We divided 30 ICM patients into HTEA (N = 16) and control (N = 14) groups.The control group was treated with medication, and the HTEA group was treated with HTEA and medication for 4 weeks. We measured the changes in the left-ventricular end-diastolic diameter (LVEDd) and left-ventricular ejection fraction (LVEF) before and after treatment by using echocardiography and examined changes in HRV and QTV using ambulatory electrocardiogram. HTEA significantly narrowed the LVEDd, improved LVEF, significantly increased the HRV, and significantly reduced the QTV in the ICM group compared to the control group. HTEA significantly narrowed the ventricular chamber diameter size of ICM patients, enhanced myocardial contractility, increased myocardial electrical stability, and improved the cardiac structure and function.
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Cressy M, Valente D, Altick A, Kockenmeister E, Honegger K, Qin H, Mitra PP, Dubnau J. Laboratory evolution of adenylyl cyclase independent learning in Drosophila and missing heritability. GENES, BRAIN, AND BEHAVIOR 2014; 13:565-77. [PMID: 24888634 PMCID: PMC4108996 DOI: 10.1111/gbb.12146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2014] [Revised: 03/28/2014] [Accepted: 05/28/2014] [Indexed: 11/29/2022]
Abstract
Gene interactions are acknowledged to be a likely source of missing heritability in large-scale genetic studies of complex neurological phenotypes. However, involvement of rare variants, de novo mutations, genetic lesions that are not easily detected with commonly used methods and epigenetic factors also are possible explanations. We used a laboratory evolution study to investigate the modulatory effects of background genetic variation on the phenotypic effect size of a null mutation with known impact on olfactory learning. To accomplish this, we first established a population that contained variation at just 23 loci and used selection to evolve suppression of the learning defect seen with null mutations in the rutabaga adenylyl cyclase. We thus biased the system to favor relatively simplified outcomes by choosing a Mendelian trait and by restricting the genetic variation segregating in the population. This experimental design also assures that the causal effects are among the known 23 segregating loci. We observe a robust response to selection that requires the presence of the 23 variants. Analyses of the underlying genotypes showed that interactions between more than two loci are likely to be involved in explaining the selection response, with implications for the missing heritability problem.
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Feng D, Wang W, Dong Y, Wu L, Huang J, Ma Y, Zhang Z, Wu S, Gao G, Qin H. Ceftriaxone alleviates early brain injury after subarachnoid hemorrhage by increasing excitatory amino acid transporter 2 expression via the PI3K/Akt/NF-κB signaling pathway. Neuroscience 2014; 268:21-32. [DOI: 10.1016/j.neuroscience.2014.02.053] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2013] [Revised: 02/25/2014] [Accepted: 02/26/2014] [Indexed: 12/13/2022]
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97
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Li G, Xu P, Pan X, Qin H, Chen Y. The effect of age on apparent diffusion coefficient values in normal spleen: A preliminary study. Clin Radiol 2014; 69:e165-7. [DOI: 10.1016/j.crad.2013.11.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2013] [Revised: 11/21/2013] [Accepted: 11/26/2013] [Indexed: 01/19/2023]
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98
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Burby JW, Zhmoginov AI, Qin H. Hamiltonian mechanics of stochastic acceleration. PHYSICAL REVIEW LETTERS 2013; 111:195001. [PMID: 24266476 DOI: 10.1103/physrevlett.111.195001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2013] [Indexed: 06/02/2023]
Abstract
We show how to find the physical Langevin equation describing the trajectories of particles undergoing collisionless stochastic acceleration. These stochastic differential equations retain not only one-, but two-particle statistics, and inherit the Hamiltonian nature of the underlying microscopic equations. This opens the door to using stochastic variational integrators to perform simulations of stochastic interactions such as Fermi acceleration. We illustrate the theory by applying it to two example problems.
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Wang L, Qin H, Nie S, Sun S, Ran F, Zhao C. Direct synthesis of heparin-like poly(ether sulfone) polymer and its blood compatibility. Acta Biomater 2013; 9:8851-63. [PMID: 23871943 DOI: 10.1016/j.actbio.2013.07.010] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2013] [Revised: 07/09/2013] [Accepted: 07/09/2013] [Indexed: 10/26/2022]
Abstract
In this study, heparin-like poly(ethersulfone) (HLPES) was synthesized by a combination of polycondensation and post-carboxylation methods, and was characterized by Fourier transform infrared spectroscopy, nuclear magnetic resonance hydrogen spectrum and gel permeation chromatography. Owing to the similar backbone structure, the synthesized HLPES could be directly blended with pristine PES at any ratios to prepare PES/HLPES membranes. After the introduction of HLPES, the microscopic structure of the modified PES membranes was changed, while the hydrophilicity was significantly enhanced. Bovine serum albumin and bovine serum fibrinogen adsorption, activated partial thromboplastin time, thromb time and platelet adhesion for the modified PES membranes were investigated. The results indicated that the blood compatibility of the PES/HLPES membranes was significantly improved compared with that of pristine PES membrane. For the PES/HLPES membranes, obvious decreases in platelet activation on PF-4 level, in complement activation on C3a and C5a levels, and in leukocytes activation on CD11b levels were observed compared with those for the pristine PES membrane. The improved blood compatibility of the PES/HLPES membrane might due to the existence of the hydrophilic groups (-SO3Na, -COONa). Furthermore, the modified PES membranes showed good cytocompatibility. Hepatocytes cultured on the PES/HLPES membranes presented improved growth in terms of SEM observation, MTT assay and confocal laser scanning microscope observation compared with those on the pristine PES membrane. These results indicate that the PES/HLPES membranes present great potential in blood-contact fields such as hemodialysis and bio-artificial liver supports.
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Sakamaki I, Kwak LW, Cha SC, Yi Q, Lerman B, Chen J, Surapaneni S, Bateman S, Qin H. Lenalidomide enhances the protective effect of a therapeutic vaccine and reverses immune suppression in mice bearing established lymphomas. Leukemia 2013; 28:329-37. [PMID: 23765229 DOI: 10.1038/leu.2013.177] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2012] [Revised: 05/21/2013] [Accepted: 06/03/2013] [Indexed: 12/31/2022]
Abstract
Immunomodulatory drugs (IMiDs) are effective therapeutic agents with direct inhibitory effects on malignant B- and plasma-cells and immunomodulatory effects on the T-cell activation. This dual function of IMiDs makes them appealing candidates for combination with a cancer vaccine. We investigated the immune stimulatory effects of lenalidomide, administrated to mice in doses, which provided comparable pharmacokinetics to human patients, on the potency of a novel fusion DNA lymphoma vaccine. The combination was curative in the majority of mice with 8d pre-established syngeneic A20 lymphomas compared with vaccine or lenalidomide alone and induced immune memory. In vivo depletion experiments established the requirement for effector CD8(+) and CD4(+) T cells in protective immunity. Unexpectedly, lenalidomide alone was also associated with reduced numbers of systemic myeloid-derived suppressor cell (MDSC) and regulatory T cell (Treg) in tumor-bearing but not naïve mice, an effect that was independent of simple tumor burden reduction. These results confirm and extend results from other models describing the effect of lenalidomide on enhancing T-cell immunity, highlight the potency of this effect, and provide a rationale for clinical application. Independently, a novel mechanism of action reversing tumor-induced immune suppression by MDSC is suggested.
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