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Meirzadeh E, Azuri I, Qi Y, Ehre D, Rappe AM, Lahav M, Kronik L, Lubomirsky I. Origin and structure of polar domains in doped molecular crystals. Nat Commun 2016; 7:13351. [PMID: 27824050 PMCID: PMC5105173 DOI: 10.1038/ncomms13351] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2016] [Accepted: 09/26/2016] [Indexed: 11/09/2022] Open
Abstract
Doping is a primary tool for the modification of the properties of materials. Occlusion of guest molecules in crystals generally reduces their symmetry by the creation of polar domains, which engender polarization and pyroelectricity in the doped crystals. Here we describe a molecular-level determination of the structure of such polar domains, as created by low dopant concentrations (<0.5%). The approach comprises crystal engineering and pyroelectric measurements, together with dispersion-corrected density functional theory and classical molecular dynamics calculations of the doped crystals, using neutron diffraction data of the host at different temperatures. This approach is illustrated using centrosymmetric α-glycine crystals doped with minute amounts of different L-amino acids. The experimentally determined pyroelectric coefficients are explained by the structure and polarization calculations, thus providing strong support for the local and global understanding of how different dopants influence the properties of molecular crystals.
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Qi Y, Peng J, Lo HC, Holt JR, Willemann M, Gaire C, Evans S, Flanagan P, Yu H, Hu O, Kennett M. In-Situ Boron Doped SiGe Epitaxy Optimization for FinFET Source/Drain. ACTA ACUST UNITED AC 2016. [DOI: 10.1149/07508.0265ecst] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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103
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Abstract
Previous work on the joint asymptotic distribution of the sum and maxima of Gaussian processes is extended here. In particular, it is shown that for a stationary sequence of standard normal random variables with correlation function r, the condition r(n)ln n = o(1) as n → ∞ suffices to establish the asymptotic independence of the sum and maximum.
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Liu Z, Qi Y, Cheng Z, Zhu X, Fan C, Yu SY. The effects of ginsenoside Rg1 on chronic stress induced depression-like behaviors, BDNF expression and the phosphorylation of PKA and CREB in rats. Neuroscience 2016; 322:358-69. [PMID: 26926964 DOI: 10.1016/j.neuroscience.2016.02.050] [Citation(s) in RCA: 84] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2015] [Revised: 02/19/2016] [Accepted: 02/22/2016] [Indexed: 01/10/2023]
Abstract
Depression is a common neuropsychiatric disorder which has been associated with a wide range of structural and functional changes within specific brain regions. Ginsenoside Rg1 has been shown to exert a number of neuroprotective effects as demonstrated in various in vivo and in vitro studies. However, little information is available regarding the site and mechanisms of ginsenoside Rg1 in promoting antidepressant effects. The present study aimed to investigate the neuroprotective and ameliorating effects of ginsenoside Rg1 on depression-like behavior as induced by chronic unpredictable mild stress (CUMS). The results showed that CUMS was effective in producing depression-like behaviors in rats as indicated by decreased responses in sucrose preference and forced swim tests which were associated with ultrastructural changes in neurons within the amygdala. Moreover, levels of PKA and CREB phosphorylation and the expression of brain-derived neurotrophic factor (BDNF) were decreased in the amygdala of CUMS rats. Remarkably, chronic ginsenoside Rg1 (40 mg/kg, i.p., 5 weeks) treatment significantly ameliorated these behavioral and biochemical alterations associated with CUMS-induced depression. Taken together, the results of the present study demonstrate that ginsenoside Rg1 exhibits antidepressant-like effects against CUMS-induced depression. This amelioration of depression-like behaviors by ginsenoside Rg1 appears to be mediated, at least in part, by a CREB-regulated increase of BDNF expression in the amygdala of rats. Therefore, these findings reveal the therapeutic potential of ginsenoside Rg1 for use in clinical trials in the treatment of depression.
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Liu J, Zhao D, Liu J, Qi Y, Sun JY, Wang W. [The present status of aspirin use for primary prevention among hypertensive outpatients in China]. ZHONGHUA NEI KE ZA ZHI 2016; 55:267-72. [PMID: 27030613 DOI: 10.3760/cma.j.issn.0578-1426.2016.04.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To evaluate the current status of aspirin for primary prevention in hypertensive outpatients in China, and the gap between aspirin use and guidelines. METHODS This was a multi-center cross-sectional study and carried out in hypertensive patients from 46 hospitals of twenty two cities in China from June to December in 2009. At least 100 essential hypertensive outpatients were consecutively recruited from each participant hospitals according to the consistent inclusion criteria. The patients underwent physical examinations and biochemical analyses, and answered questionnaires. Based on the relevant guidelines, the risk assessment of cardiovascular disease (CVD) is a prerequisite for the proper use of aspirin in primary prevention. RESULTS A total of 5 206 hypertensive outpatients were included. Among them, 1 324 (25.4%) were with a history of CVD. Among those with no history of CVD, 2 705 patients (69.7%) were at high risk of CVD, and the aspirin utilization rate for primary prevention was 29.2%, with 32.2% patients at high risk and 22.4% patients at low-medium risk of CVD, respectively. In the application of aspirin for CVD primary prevention, the inappropriate aspirin use rate in patients at low-medium risk was 23.3%. CONCLUSIONS The proportion of subjects at high risk for CVD is high in hypertensive outpatients suggesting a wide range of application space for aspirin.There exists underutilization for high risk and overutilization for low-medium risk patients in current aspirin primary prevention application.
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Qi Y, Cai M, Zhang HM, Yang LR, Qin F, Liang EP, Jiang XJ, Song L, Wu HY, Zhou XL, Zou YB, Gao XJ, Qian HY, Bian J. [Impact of long-term continuous positive airway pressure treatment for patients with obstructive sleep apnea syndrome]. ZHONGHUA XIN XUE GUAN BING ZA ZHI 2016; 44:144-9. [PMID: 26926508 DOI: 10.3760/cma.j.issn.0253-3758.2016.02.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To investigate the long-term efficacy of continuous positive airway pressure (CPAP) treatment for patients with obstructive sleep apnea syndrome (OSAS). METHODS This case control study was performed among 154 patients with moderate or severe OSAS between September 2009 and September 2014. Patients were divided into treatment group (n=66, 53 patients with hypertension) and control group (n=88, 67 patients with hypertension). The long-term efficacy of CPAP treatment on clinical events and blood pressure was evaluated. RESULTS The combined incidence of death, myocardial infarction, coronary revascularization and stroke events was 1.5% (1/66) in treatment group and 11.4% (10/88) in control group (P<0.05). CPAP treatment also led to more significant reduction in systolic blood pressure ((12.24±18.06) mmHg(1 mmHg=0.133 kPa) to (4.24±16.63) mmHg, P<0.05) in the patients with hypertension in these two groups. CONCLUSIONS CPAP treatment could reduce the risk of cardiovascular and neurovascular events for patients with moderate or severe OSAS.
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Singh B, Deng FM, Kane Y, Zhan Y, Qi Y, Liu X, Zhang H, Dong Y, Brody R, Wieczorek R, Lee P. Abstract P3-05-08: High prevalence of splicing variant AR-V7 in triple negative breast carcinoma. Cancer Res 2016. [DOI: 10.1158/1538-7445.sabcs15-p3-05-08] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
The androgen receptor (AR) and its pathway have been implicated in tumorigenesis and progression of breast cancer. Anti-androgen therapy has shown efficacy in the metastatic breast cancer and numerous clinical trials are underway to study efficacy in various clinical settings. 15 splicing variants of AR (AR-Vs) have been described in prostate cancer. Structurally, AR-Vs have insertions of cryptic exons downstream of the exons that encode the DNA-binding domain or deletions of the exons encoding the ligand-binding domain, resulting in a disrupted AR open reading frame and expression of ligand-binding-domain-truncated AR proteins. In prostate cancer, some of the AR-Vs especially AR-V7 are associated with aggressive disease and resistance to anti-AR therapy. The AR-V prevalence in human breast cancer specimens has hitherto not been studied. We aimed at studying the expression of AR-Vs in breast cancer specimens and present the data on AR-V1, AR-V7, AR8, and ARV567, in AR-positive triple negative (TNBC) and ER+/Her2- breast cancer.
Design: 98 cases of TNBC, 40 cases of ER+/Her2 breast cancer and 17 cases with reduction mammoplasty were abstracted from NYULMC pathology database and screened for AR expression by immunohistochemistry (IHC). IHC for AR was performed using antibody clone N-20 (Santa Cruz) at 1:100 dilution. Normal breast tissue was used as internal control and 10% nuclear staining was used for categorizing a tumor as AR positive. A subset of cases which over-expressed AR were macrodissected from formalin fixed paraffin embedded sections with total RNA extracted by using the PureLink® FFPE RNA Isolation Kit (Invitrogen). Reverse-transcription was performed by using the SuperScript® III Reverse Transcriptase Kit (Invitrogen). AR-V expression was presented as cycle number difference to housekeeping gene (delta CT) for real-time PCR or as absolute copy number for digital PCR.
Results: AR+ TNBC and AR+/ER+ cases ranged from stage 1A to IIIA. IHC for AR showed > 10% staining in 27 of 98 TNBC cases and in 39 of 40 ER+/Her2- cases.
AR Positive Prevalence in TNBC and ER+ Breast Carcinoma AR+AR-TNBC2771ER+/Her2-391
AR-V7 was expressed in 11 of 13 AR+/TNBC cases (p < 0.05); AR-V1 and AR-V4 were expressed in 4; ARV8 and ARv567es were expressed in 3 and 2 cases respectively. In 25 AR+/ER+/Her2- cases AR-V7 was expressed in 14; AR-V4 in 9; ARV567 in 5, AR-V1 in 3 cases.
AR Spliced Variant Incidence in TNBC, ER+ and Benign breast tissue Benign (N=17)ER+/AR+ (N=25)TNBC+/AR+(N=13)P ValueAR-V113(12%)4(25%)0.145AR-V419(36%)4(25%)0.35AR-V78(47%)14(56%)11(85%)0.021AR-V801(4%)3(19%)0.474AR-V56715(20%)2(12.5%)0.092
Conclusion: We report expression of various spliced variants in TNBC, ER+/Her2- breast cancer. A statistically significant expression of AR-V7 is seen in TNBC. Since AR-V7 predicts for poor prognosis and lack of response to anti-AR therapy in prostate cancer, AR-V7 expression maybe a useful biomarker to analyze response data in on going breast cancer clinical trials.
Citation Format: Singh B, Deng F-M, Kane Y, Zhan Y, Qi Y, Liu X, Zhang H, Dong Y, Brody R, Wieczorek R, Lee P. High prevalence of splicing variant AR-V7 in triple negative breast carcinoma. [abstract]. In: Proceedings of the Thirty-Eighth Annual CTRC-AACR San Antonio Breast Cancer Symposium: 2015 Dec 8-12; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2016;76(4 Suppl):Abstract nr P3-05-08.
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Qi Y, Liu H, Daniels MP, Zhang G, Xu H. Loss of Drosophila i-AAA protease, dYME1L, causes abnormal mitochondria and apoptotic degeneration. Cell Death Differ 2016; 23:291-302. [PMID: 26160069 PMCID: PMC4716308 DOI: 10.1038/cdd.2015.94] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2014] [Revised: 05/30/2015] [Accepted: 06/05/2015] [Indexed: 01/22/2023] Open
Abstract
Mitochondrial AAA (ATPases Associated with diverse cellular Activities) proteases i-AAA (intermembrane space-AAA) and m-AAA (matrix-AAA) are closely related and have major roles in inner membrane protein homeostasis. Mutations of m-AAA proteases are associated with neuromuscular disorders in humans. However, the role of i-AAA in metazoans is poorly understood. We generated a deletion affecting Drosophila i-AAA, dYME1L (dYME1L(del)). Mutant flies exhibited premature aging, progressive locomotor deficiency and neurodegeneration that resemble some key features of m-AAA diseases. dYME1L(del) flies displayed elevated mitochondrial unfolded protein stress and irregular cristae. Aged dYME1L(del) flies had reduced complex I (NADH/ubiquinone oxidoreductase) activity, increased level of reactive oxygen species (ROS), severely disorganized mitochondrial membranes and increased apoptosis. Furthermore, inhibiting apoptosis by targeting dOmi (Drosophila Htra2/Omi) or DIAP1, or reducing ROS accumulation suppressed retinal degeneration. Our results suggest that i-AAA is essential for removing unfolded proteins and maintaining mitochondrial membrane architecture. Loss of i-AAA leads to the accumulation of oxidative damage and progressive deterioration of membrane integrity, which might contribute to apoptosis upon the release of proapoptotic molecules such as dOmi. Containing ROS level could be a potential strategy to manage mitochondrial AAA protease deficiency.
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Shen Y, Zhang H, Wang L, Qian H, Qi Y, Miao X, Cheng L, Qi X. Protective effect of ferulic acid against 2,2'-azobis(2-amidinopropane) dihydrochloride-induced oxidative stress in PC12 cells. Cell Mol Biol (Noisy-le-grand) 2016; 62:109-116. [PMID: 26828997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2015] [Accepted: 01/27/2016] [Indexed: 06/05/2023]
Abstract
Oxidative stress is closely related to the pathogenesis of neurodegenerative disorders such as Parkinson's disease and Alzheimer's disease. However, the underlying antioxidant mechanisms of ferulic acid (FA) aganist oxidantive stress are poorly understood. We evaluated the potential protective effects of FA against 2,2'-azobis(2-amidinopropane) dihydrochloride (AAPH)-induced damage in PC12 cells. Our results indicated that pretreatment with FA prior to AAPH exposure significantly increased PC12 cell survival, and also increased catalase and superoxide dismutase activity. Furthermore, FA treatment reduced cellular lactate dehydrogenase release and malondialdehyde levels. It attenuated AAPH-induced apoptosis in PC12 cells, as determined by flow cytometric detection of annexin V. Reductions in mitochondrial membrane potential and accumulation of intracellular Ca2+ were also inhibited by FA treatment. These findings suggested that FA protected PC12 cells against AAPH-induced oxidative stress, and may be a neuroprotective agent.
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Meric-Bernstam F, Brusco L, Daniels M, Wathoo C, Bailey AM, Strong L, Shaw K, Lu K, Qi Y, Zhao H, Lara-Guerra H, Litton J, Arun B, Eterovic AK, Aytac U, Routbort M, Subbiah V, Janku F, Davies MA, Kopetz S, Mendelsohn J, Mills GB, Chen K. Incidental germline variants in 1000 advanced cancers on a prospective somatic genomic profiling protocol. Ann Oncol 2016; 27:795-800. [PMID: 26787237 DOI: 10.1093/annonc/mdw018] [Citation(s) in RCA: 136] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2015] [Accepted: 01/08/2016] [Indexed: 01/14/2023] Open
Abstract
BACKGROUND Next-generation sequencing in cancer research may reveal germline variants of clinical significance. We report patient preferences for return of results and the prevalence of incidental pathogenic germline variants (PGVs). PATIENTS AND METHODS Targeted exome sequencing of 202 genes was carried out in 1000 advanced cancers using tumor and normal DNA in a research laboratory. Pathogenic variants in 18 genes, recommended for return by The American College of Medical Genetics and Genomics, as well as PALB2, were considered actionable. Patient preferences of return of incidental germline results were collected. Return of results was initiated with genetic counseling and repeat CLIA testing. RESULTS Of the 1000 patients who underwent sequencing, 43 had likely PGVs: APC (1), BRCA1 (11), BRCA2 (10), TP53 (10), MSH2 (1), MSH6 (4), PALB2 (2), PTEN (2), TSC2 (1), and RB1 (1). Twenty (47%) of 43 variants were previously known based on clinical genetic testing. Of the 1167 patients who consented for a germline testing protocol, 1157 (99%) desired to be informed of incidental results. Twenty-three previously unrecognized mutations identified in the research environment were confirmed with an orthogonal CLIA platform. All patients approached decided to proceed with formal genetic counseling; in all cases where formal genetic testing was carried out, the germline variant of concern validated with clinical genetic testing. CONCLUSIONS In this series, 2.3% patients had previously unrecognized pathogenic germline mutations in 19 cancer-related genes. Thus, genomic sequencing must be accompanied by a plan for return of germline results, in partnership with genetic counseling.
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Wu S, Qi Y, Niu LM, Xie DX, Cui XL, Liu ZH. Activin A as a novel biomarker for colorectal adenocarcinoma in humans. EUROPEAN REVIEW FOR MEDICAL AND PHARMACOLOGICAL SCIENCES 2015; 19:4371-4378. [PMID: 26636525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
OBJECTIVE Early diagnostics of colorectal cancer is complicated by the lack of reliable serum biomarkers. This study aimed to investigate if the serum level of activin A can be used for diagnostics of this disease. PATIENTS AND METHODS In this study we measured the level of activin A in patients with colorectal adenocarcinoma, benign colorectal polyps, as well as in healthy subjects. RESULTS We found that the level of activin A was significantly higher in patients with colorectal adenocarcinoma, as compared to patients with polyps and healthy controls. Furthermore, activin A levels correlated well with the stage of colorectal cancer. The level of activin A was substantially reduced in post-operative patients. Immunohistochemical staining demonstrated that high levels of activin A were present in the adenocarcinoma tissue samples but not in the non-cancerous samples. RT-PCR further confirmed that mRNA of ßA subunit of activin A is significantly over-expressed in the majority of cancerous samples. Western blotting results further demonstrated the elevated level of activin A in cancer samples. CONCLUSIONS Taken together, the findings suggest that colorectal adenocarcinomas directly secret activin A into the blood stream. Measuring the serum level of activin A might be used as a reliable diagnostic and screening tool in clinical practice.
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Li X, Zhang J, Zhao W, Yang H, Ma J, Qi Y, Wu S. Effect of Tongxinluo on nerve regeneration in mice with diabetic peripheral neuropathy. Cell Mol Biol (Noisy-le-grand) 2015; 61:103-107. [PMID: 26522065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2015] [Accepted: 10/23/2015] [Indexed: 06/05/2023]
Abstract
Diabetic peripheral neuropathy (DPN) is a common complication of diabetes. This study aims to investigate the effects of Tongxinluo on the nerve regeneration in diabetic peripheral neuropathy mice. Forty Specefic Pathogen Free (SPF) male KK/Upj—Ay mice were divided into diabetes group, diabetes with high dose Tongxinluo (4g/kg) (D+H), diabetes with mid dose Tongxinluo (2g/kg) (D+M), and diabetes with low dose Tongxinluo (1g/kg) (D+L) groups. Fasting blood glucose (FPG), heat pain threshold, motor nerve conduction velocity (MNCV), insulin—like growth factor—1 (IGF1), activator protein 1 (c—fos), nerve growth factor (NGF), and basic fibroblast growth factor (BFGF) were measured. Results indicated that FPG of diabetes group was significantly higher than that of control group. Heat pain threshold and MNCV were significantly lowered in diabetes group. Expression levels of IGF1, NGF and BFGF were significantly lower than that of control, whereas c—fos expression was significantly higher than that of control group. Tongxinluo treatment (D+M and D+H) significantly up—regulated heat pain threshold, MNCV, and IGF1, NGF and BFGF expression, but decreased c—fos expresson when compared to that of diabetes group. In conclusion, Tongxinluo can ameliorate diabetic peripheral neuropathy, improve MNCV, and promote nerve regeneration. The underlying mechanism needs to be further elucidated.
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Hoadley AFA, Qi Y, Nguyen T, Hapgood K, Desai D, Pinches D. A field study of lignite as a drying aid in the superheated steam drying of anaerobically digested sludge. WATER RESEARCH 2015; 82:58-65. [PMID: 25976020 DOI: 10.1016/j.watres.2015.04.021] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2015] [Revised: 04/17/2015] [Accepted: 04/19/2015] [Indexed: 06/04/2023]
Abstract
Dried sludge is preferred when the sludge is either to be incinerated or used as a soil amendment. This paper focuses on superheated steam drying which has many benefits, because the system is totally enclosed, thereby minimising odours and particulate emissions. This work reports on field trials at a wastewater treatment plant where anaerobically digested sludge is dried immediately after being dewatered by belt press. The trials showed that unlike previous off-site tests, the sludge could be dried without the addition of a filter aid at a low production rate. However, the trials also confirmed that the addition of the lignite (brown coal) into the anaerobically digested sludge led to a more productive drying process, improved product quality and a greater fraction of the product being in the desired product size range. It is concluded that these results were achieved because the lignite helped to control the granule size in the dryer. Furthermore neither Salmonella spp or E coli were detected in the dried samples. Tests on spontaneous combustion show that this risk is increased in proportion to the amount of lignite used as a drying aid.
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Kong F, Qi Y, Liu H, Gao F, Yang P, Li Y, Jia Y. Surgery combined with chemotherapy for recurrent gastric cancer achieves better long-term prognosis. Clin Transl Oncol 2015; 17:917-24. [PMID: 26088414 DOI: 10.1007/s12094-015-1327-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2015] [Accepted: 06/09/2015] [Indexed: 01/13/2023]
Abstract
BACKGROUNDS Recurrence is the most important factor associated with death of gastric cancer patients after surgery. The aim of this study was to explore the prognosis factors and the effective therapy for recurrent gastric cancer (RGC) patients after radical resection. METHODS The clinical data of 144 RGC patients who underwent radical resection from January 1999 to March 2004 were reviewed. The 15 clinicopathological factors and treatment modalities on the survival were analyzed. Univariate and multivariate analyses were performed to investigate the prognostic significance of these factors for RGC. RESULTS The early recurrence (<2 years) was found in 90 patients, while late recurrence (≥2 years) occurred in 54 patients. The 2-year cumulative survival rates were 23.8 % for recurrent patients receiving chemotherapy plus surgery vs. 1.2 % in patients having chemotherapy only (p < 0.001), while the median survival time was 11.0 months vs. 6.0 months (p < 0.001). Multivariate analysis indicated TNM stage after the first operation (p = 0.048), iASPP overexpression (p = 0.013), time to recurrence (p < 0.001) and treatment of recurrence (p < 0.001) as independent prognostic factors. CONCLUSIONS Surgery combined with chemotherapy for recurrent gastric cancer patients achieves ideal long-term prognosis, which should perform actively.
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Ng HK, Li KWK, Qi Y, Tian X, Yao Y, Zhou L, Lau KM. MB-04 * EXPRESSION OF CRMP1 INHIBITS CELL PROLIFERATION OF MEDULLOBLASTOMA AND IS REGULATED BY HMGA1. Neuro Oncol 2015. [DOI: 10.1093/neuonc/nov061.80] [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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Qi Y, Inoue K, Fu M, Inui A, Herzog H. Chronic overproduction of ghrelin in the hypothalamus leads to temporal increase in food intake and body weight. Neuropeptides 2015; 50:23-8. [PMID: 25801577 DOI: 10.1016/j.npep.2015.02.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/09/2014] [Revised: 02/03/2015] [Accepted: 02/09/2015] [Indexed: 11/28/2022]
Abstract
Ghrelin is known to be a critical stimulator of feeding behavior mainly via actions in the hypothalamus. However, its functional contribution to the control of energy homeostasis under chronic elevated conditions is unknown. Here we show that overproduction of ghrelin via an AAV viral delivery system in the hypothalamus leads to an increase in food intake associated with increases in body weight. However, this increase in food intake is only temporary and is diminished and no longer significant after 3 weeks. Analysis of brain sections of mice 6 weeks after AAV-ghrelin virus injection demonstrates unaltered neuropeptide Y levels but strongly up-regulated pro-opiomelanocortin levels indicating that a compensatory mechanism has been activated to counter regulate the feeding stimulatory actions of ghrelin. This demonstrates that control mechanism exists that is activated under conditions of prolonged high ghrelin levels, which could potentially be utilized to control feeding and the development of obesity.
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Lai DP, Tan S, Kang YN, Wu J, Ooi HS, Chen J, Shen TT, Qi Y, Zhang X, Guo Y, Zhu T, Liu B, Shao Z, Zhao X. Genome-wide profiling of polyadenylation sites reveals a link between selective polyadenylation and cancer metastasis. Hum Mol Genet 2015; 24:3410-7. [DOI: 10.1093/hmg/ddv089] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2014] [Accepted: 03/06/2015] [Indexed: 01/10/2023] Open
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Masuda T, Mitaka C, Khin Hnin Si M, Kido K, Qi Y, Uchida T, Abe S, Miyasho T, Tomita M. Rat polymyxin b hemoperfusion model: preventive effect on renal tubular cell death in a rat cecal ligation and puncture model. Crit Care 2015. [PMCID: PMC4471042 DOI: 10.1186/cc14207] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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Qi Y, Li X, Zhao S. miR-29b inhibits the progression of esophageal squamous cell carcinoma by targeting MMP-2. Neoplasma 2015; 62:384-90. [PMID: 25866219 DOI: 10.4149/neo_2015_046] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Accumulating evidence has shown that microRNAs (miRNAs) are aberrantly expressed in human esophageal cancer and crucial to tumorigenesis. Herein, we identified the role of miR-29b in esophageal squamous cell carcinoma (ESCC) development in vitro and in vivo. MiR-29b expression was investigated in thirty cases of ESCC samples as well as four ESCC cell lines by real-time PCR. Transwell assays were conducted to explore the effects of miR-29b on the invasion of human ESCC cell lines. The impact of overexpression of miR-29b on putative target MMP-2 were subsequently confirmed via Western blot. Our results indicated that MiR-29b expression was frequently down-regulated in ESCC specimens and cell lines compared with adjacent normal tissues (p<0.05). Overexpression of miR-29b suppressed (p<0.05) ESCC cell invasion, as well as the growth of xenograft tumors in mice. Overexpression of miR-29b significantly decreased (p<0.05) the protein level of MMP-2, which has previously been identified as a direct target of miR-29b. Thus, our study demonstrated that overexpression of miR-29b inhibits tumor growth in part by targeting MMP-2. Our findings revealed that miR-29b may act as a tumor suppressor in ESCC, whose dysregulation may be involved in the initiation and development of human ESCC.
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Wang Q, Shen Y, Lian Z, Chu J, Ma H, Liang Y, Qi Y. Health Economic Evaluation of Guangdong Rural Tertiary Breast Cancer Screening and Diagnosis System. VALUE IN HEALTH : THE JOURNAL OF THE INTERNATIONAL SOCIETY FOR PHARMACOECONOMICS AND OUTCOMES RESEARCH 2014; 17:A736. [PMID: 27202640 DOI: 10.1016/j.jval.2014.08.113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
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Luo DX, Jin XJ, Li GT, Sun HT, Li YY, Qi Y. The use of targeted percutaneous laser disc decompression under the guidance of puncture-radiating pain leads to better short-term responses in lumbar disc herniation. EUROPEAN REVIEW FOR MEDICAL AND PHARMACOLOGICAL SCIENCES 2014; 18:3048-3055. [PMID: 25392104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
OBJECTIVE Traditional percutaneous laser disc decompression (PLDD) eliminates nucleus pulposus in the center of lumbar discs. Targeted PLDD is an alternative technique that involves elimination and decompression of the target area located 5-8 mm in the front of the herniated disc. We aimed to compare the efficacy of targeted PLDD with traditional PLDD in the treatment of lumbar disc herniation and evaluate the usefulness of guidance by puncture-radiating pain on clinical outcomes of PLDD. PATIENTS AND METHODS We treated 61 patients with lumbar disc herniation. Patients were stratified into control group, which included patients who underwent traditional PLDD, and study group in patients underwent targeted PLDD. Clinical outcomes and efficacies were evaluated at different time points using the visual analog scale (VAS) and modified MacNab criteria. RESULTS Patients in the study group demonstrated significantly greater decreases in the VAS scores compared with those in control group. These differences were observed on Day 3, and 1 and 3 months after the treatment. Further, VAS scores were markedly lower in the patients whose treatment was guided by the puncture-radiating pain. Thus, at 1 month after the operation, 64.1% of those patients showed excellent or good outcomes based on MacNab criteria, which was almost twice the percentage seen in patients who did not experience the puncture-radiating pain (36.4%). CONCLUSIONS Targeted PLDD is an effective, minimally invasive, and safe technique for lumbar disc herniation, and this technique achieves better short-term postsurgical outcomes than traditional PLDD. Puncture-radiating pain is an important prognostic indicator for better short-term responses to the treatment.
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Du F, Yin Y, Qi Y, Zhang K. A size singleton matching the target-distractor size relation cannot capture attention when it appears outside of attentional window. J Vis 2014. [DOI: 10.1167/14.10.639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Qi Y, Du F, Li X, Zhang K. Dual processes of oculomotor capture by abrupt onset: Rapid involuntary capture and sluggish voluntary prioritization. J Vis 2014. [DOI: 10.1167/14.10.326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Qi Y, Feng W, Cai J, Sun Q, Li S, Li M, Song A, Yang P. Effects of conservatively treated diseased cementum with or without EMD on in vitro cementoblast differentiation and in vivo cementum-like tissue formation of human periodontal ligament cells. Cell Prolif 2014; 47:310-7. [PMID: 24930868 DOI: 10.1111/cpr.12116] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2014] [Accepted: 04/08/2014] [Indexed: 01/09/2023] Open
Abstract
OBJECTIVES The present study aimed to evaluate the effects of conservatively treated diseased cementum on in vitro cementoblast differentiation and in vivo cementum-like tissue formation of human periodontal ligament cells (hPDLCs), and observe differential effects of enamel matrix derivative (EMD) on in vivo cementum formation by hPDLCs. MATERIALS AND METHODS Forty-eight cementum slices and 48 dentin slices were prepared from periodontitis compromised teeth, and hPDLCs were inoculated on to all root slices. Twenty-four co-cultured root slices of each group were used for mRNA expression of cementum attachment protein and CEMP1. With application of EMD, 24 co-cultured root slices (divided into groups C, D, C+E, D+E) were transplanted subcutaneously into nude mice. All root fragments were reviewed by histological analysis and immunohistochemical staining for bone sialoprotein. RESULTS mRNA expressions of cementum attachment protein and cementum protein - 1 from hPDLCs on cementum slices were statistically higher than those of dentin slices. Seven specimens of group C and 10 specimens of group C+E revealed a layer of cementum-like tissue (NFC) on surfaces of pre-existing cementum. NFC was thicker in group C+E than in group C. All NFCs were positively stained for bone sialoprotein, however, there was no NFC formation on dentin slices. CONCLUSION Conservatively treated diseased cementum promoted in vitro cementoblast differentiation and in vivo cementum-like tissue formation by hPDLCs, and the in vivo effect was enhanced by the presence of EMD.
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Wong CL, Mendoza J, Henson SJ, Qi Y, Lou W, L'Abbé MR. Consumer attitudes and understanding of cholesterol-lowering claims on food: randomize mock-package experiments with plant sterol and oat fibre claims. Eur J Clin Nutr 2014; 68:946-52. [DOI: 10.1038/ejcn.2014.107] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2013] [Revised: 02/18/2014] [Accepted: 04/08/2014] [Indexed: 11/09/2022]
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