101
|
Lin G, Wang Z, Sun X, Liu J, Xu Y. Lymph Node Drainage Patterns in Resectable Non-Small Cell Lung Cancer and Its Clinical Significance. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2016.06.1708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
102
|
Abstract
Nondegradable glass microspheres (35 μ) were injected into the portal vein for toxicity test in 15 rabbits. In 10 animals the microspheres were loaded with 90Y, giving liver absorbed doses between 24.6 and 437.4 Gy, and in 5 with 89Y (control group). The total amount of microspheres injected in each animal varied between 35 and 140 mg. The rabbits in the experimental group tolerated the effect of radioembolization in a dose 4 times higher than the upper limit of the clinical dose (100 Gy). After injection of 90Y glass microspheres into the portal vein of rats with diethylnitrosamine (DEN)-induced hepatic carcinoma, the microspheres, in addition to the liver parenchyma, accumulated in central and peripheral parts of the cancer nodules, causing necrosis. The internal radiation therapy of 90Y glass microspheres delivered via the portal vein may be an effective nonsurgical method for the treatment of liver cancer, especially in small nodules.
Collapse
|
103
|
Gu ZM, Lin G, Yi JR, Li JM, Zhou J, Pan WM. Transluminal Catheter Angioplasty of Abdominal Aorta in Takayasu's Arteritis. Acta Radiol 2016. [DOI: 10.1177/028418518802900503] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Nine patients with Takayasu's arteritis and a long stenotic segment of the abdominal aorta were treated by percutaneous transluminal angioplasty (PTA). Intermittent claudication dissappeared in six of seven cases, the femoral pulse reappeared in all five; ankle/arm indices increased in seven cases; elevated blood pressure normalized in seven of eight cases. Seven patients were followed for 3 to 28 months. They were all free of symptoms from the lower extremities. In three patients with or without renal artery stenosis and with hypertension, the blood pressure decreased after PTA of the abdominal aorta only. PTA may be a valuable treatment in Takayasu's arteritis and stenosis of the abdominal aorta.
Collapse
|
104
|
Zhu YH, Lin G, Dai ZL, Zhou TJ, Yuan TL, Feng CP, Chen F, Wu GY, Wang JJ. Developmental changes in polyamines and autophagic marker levels in normal and growth-restricted fetal pigs. J Anim Sci 2016; 93:3503-11. [PMID: 26440019 DOI: 10.2527/jas.2014-8743] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Polyamines are essential for embryonic and fetal survival, growth, and development. Additionally, polyamines may induce autophagy in mammalian cells. However, little is known about the availability of polyamines or autophagy in the porcine conceptus with intrauterine growth restriction (IUGR). The present study was performed to evaluate the developmental changes of polyamine concentrations in IUGR and normal porcine fetuses as well as autophagic marker levels in the fetal intestinal mucosa during the second half of gestation when most fetal growth occurs. Allantoic fluid (ALF), amniotic fluid (AMF), umbilical vein, and the small-intestinal mucosa were obtained from both IUGR and normal fetal pigs at d 60, 90, and 110 of gestation. Concentrations of polyamines in fetal fluids as well as protein abundances of microtubule-associated protein light chain 3B (LC3B), an autophagic marker, in the fetal small-intestinal mucosa were determined. Concentrations of polyamines varied greatly in different fetal compartments and changed substantially with advancing gestation. Concentrations of polyamines in IUGR fetal fluids and the small-intestinal mucosa were markedly different from those in their normal counterparts at d 60 and 90 of gestation, whereas most of the differences were not detected by late (d 110) gestation. Specifically, polyamine levels were lower in the umbilical vein plasma but higher in ALF and AMF from IUGR fetuses. Furthermore, enhanced levels of an autophagic marker were observed in the small-intestinal mucosa of IUGR fetuses throughout mid and late gestation in association with abnormal spermidine levels in fetal plasma. These findings support the notion that enhanced autophagy may be an important survival mechanism in IUGR fetuses. Collectively, our findings provide a new framework for future studies to define the roles for polyamines in the prevention and treatment of IUGR in both human medicine and animal production.
Collapse
|
105
|
Soliman H, Varela JN, Nyamandi V, Garcia-Patino M, Lin G, Bankar GR, Jia Z, MacLeod KM. Attenuation of obesity-induced insulin resistance in mice with heterozygous deletion of ROCK2. Int J Obes (Lond) 2016; 40:1435-43. [PMID: 27163743 DOI: 10.1038/ijo.2016.89] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Revised: 03/26/2016] [Accepted: 04/19/2016] [Indexed: 12/20/2022]
Abstract
BACKGROUND/OBJECTIVES Obesity-associated insulin resistance is a major risk factor for the development of type 2 diabetes, cardiovascular disease and non-alcoholic liver disease. Over-activation of the RhoA-Rho kinase (ROCK) pathway has been implicated in the development of obesity-induced insulin resistance, but the relative contribution of ROCK2 has not been elucidated. This was investigated in the present study. METHODS Male ROCK2+/- mice and their wild-type (WT) littermate controls were fed normal chow or a high fat diet (HFD) for 18 weeks. Glucose and insulin tolerance tests were conducted 8 and 16 weeks after the start of feeding. At termination, isoform-specific ROCK activity and insulin signaling were evaluated in epididymal adipose tissue. Adipocyte size was assessed morphometrically, while adipose tissue production of PPARγ was determined by western blotting, and inflammatory cytokines were evaluated by RT-PCR and immunofluorescence. RESULTS The decrease in systemic insulin sensitivity and glucose tolerance produced by high fat feeding was attenuated in ROCK2+/- mice. There was no reduction in food intake, body weight or epididymal fat pad weight in HFD-ROCK2+/- mice. However, the increase in adipocyte size detected in HFD-WT mice was attenuated in HFD-ROCK2+/- mice. The increase in adipose tissue ROCK2 activity produced by high fat feeding in WT mice was also prevented in ROCK2+/- mice, and this was accompanied by improved insulin-induced phosphorylation of Akt. The expression of both isoforms of PPARγ was increased in adipose tissue from HFD-ROCK2+/- mice, while adipocyte hypertrophy and production of inflammatory cytokines were reduced compared with HFD-WT mice. CONCLUSIONS These data suggest that activation of ROCK2 in adipose tissue contributes to obesity-induced insulin resistance. This may result in part from suppression of PPARγ expression, leading to adipocyte hypertrophy and an increase in inflammatory cytokine production. ROCK2 may be a suitable target to improve insulin sensitivity in obesity.
Collapse
|
106
|
Stevenson HP, Lin G, Barnes CO, Sutkeviciute I, Krzysiak T, Weiss SC, Reynolds S, Wu Y, Nagarajan V, Makhov AM, Lawrence R, Lamm E, Clark L, Gardella TJ, Hogue BG, Ogata CM, Ahn J, Gronenborn AM, Conway JF, Vilardaga JP, Cohen AE, Calero G. Transmission electron microscopy for the evaluation and optimization of crystal growth. Acta Crystallogr D Struct Biol 2016; 72:603-15. [PMID: 27139624 PMCID: PMC4854312 DOI: 10.1107/s2059798316001546] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2015] [Accepted: 01/25/2016] [Indexed: 11/10/2022] Open
Abstract
The crystallization of protein samples remains the most significant challenge in structure determination by X-ray crystallography. Here, the effectiveness of transmission electron microscopy (TEM) analysis to aid in the crystallization of biological macromolecules is demonstrated. It was found that the presence of well ordered lattices with higher order Bragg spots, revealed by Fourier analysis of TEM images, is a good predictor of diffraction-quality crystals. Moreover, the use of TEM allowed (i) comparison of lattice quality among crystals from different conditions in crystallization screens; (ii) the detection of crystal pathologies that could contribute to poor X-ray diffraction, including crystal lattice defects, anisotropic diffraction and crystal contamination by heavy protein aggregates and nanocrystal nuclei; (iii) the qualitative estimation of crystal solvent content to explore the effect of lattice dehydration on diffraction and (iv) the selection of high-quality crystal fragments for microseeding experiments to generate reproducibly larger sized crystals. Applications to X-ray free-electron laser (XFEL) and micro-electron diffraction (microED) experiments are also discussed.
Collapse
|
107
|
Li HL, Wei JF, Fan LY, Wang SH, Zhu L, Li TP, Lin G, Sun Y, Sun ZJ, Ding J, Liang XL, Li J, Han Q, Zhao RCH. miR-302 regulates pluripotency, teratoma formation and differentiation in stem cells via an AKT1/OCT4-dependent manner. Cell Death Dis 2016; 7:e2078. [PMID: 26821070 PMCID: PMC4816169 DOI: 10.1038/cddis.2015.383] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2015] [Revised: 10/20/2015] [Accepted: 11/20/2015] [Indexed: 12/12/2022]
Abstract
Pluripotency makes human pluripotent stem cells (hPSCs) promising for regenerative medicine, but the teratoma formation has been considered to be a major obstacle for their clinical applications. Here, we determined that the downregulation of miR-302 suppresses the teratoma formation, hampers the self-renewal and pluripotency, and promotes hPSC differentiation. The underlying mechanism is that the high endogenous expression of miR-302 suppresses the AKT1 expression by directly targeting its 3'UTR and subsequently maintains the pluripotent factor OCT4 at high level. Our findings reveal that miR-302 regulates OCT4 by suppressing AKT1, which provides hPSCs two characteristics related to their potential for clinical applications: the benefit of pluripotency and the hindrance of teratoma formation. More importantly, we demonstrate that miR-302 upregulation cannot lead OCT4 negative human adult mesenchymal stem cells (hMSCs) to acquire the teratoma formation in vivo. Whether miR-302 upregulation can drive hMSCs to acquire a higher differentiation potential is worthy of deep investigation.
Collapse
|
108
|
Mihalcea D, Bergler-Klein J, Grogan M, Pagourelias E, Faber L, Ciampi Q, Debonnaire P, Saberniak J, Florescu M, Vladareanu AM, Mihaila S, Vinereanu D, Spannbauer A, Zlabinger K, Macejovska D, Maurer G, Gyongyosi M, Scott C, Lin G, Klarich K, Miller W, Dispenzieri A, Mirea OC, Duchenne J, Vovas G, Van Aelst L, Claus P, Van Cleemput J, Delforge M, Bogaert J, Voigt JU, Burghardt A, Seggewiss H, Van Buuren F, Horstkotte D, Olivotto I, Gardini C, Monserrat L, Peteiro J, Lopes L, Cotrim C, Losi MA, Lazzeroni DE, Picano E, Joyce E, Van Den Brink OVW, Bax JJ, Delgado V, Ajmone Marsan N, Leren IS, Haland TF, Hopp E, Edvardsen T, Haugaa KH. Rapid Fire Abstract session: new insights in cardiomyopthies434The role of 4D echocardiography and cardiac biomarkers for early detection of chemotherapy induced cardiotoxicity in nonHodgkin lymphoma patients435Identification of proto-oncogenes and genes responsible for myocardial fibrosis and diastolic dysfunction after anticancer treatment under experimental conditions436Wild type transthyretin cardiac amyloidosis: clinical characteristics, echocardiographic findings, and predictors of outcome437A novel echocardiographic index for detection of cardiac amyloidosis.438Left ventricular outflow obstruction is a treatable feature rather than a risk marker in patients with hypertrophic cardiomyopathy439The international stress echo registry in hypertrophic cardiomyopathy440Value of left atrial size and function to risk stratify for new onset atrial fibrillation in hypertrophic cardiomyopathy441Right ventricle ejection fraction by cardiac resonance imaging is superior in discrimination between early phase ARVC and right ventricular outflow tract ventricular tachycardia. Eur Heart J Cardiovasc Imaging 2015. [DOI: 10.1093/ehjci/jev254] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
109
|
Chiang Y, Lin G, Wang C. Early Apparent Diffusion Coefficient Changes During Concurrent Chemoradiation Therapy Predicting Survival for Women With Bulky Cervical Cancer. Int J Radiat Oncol Biol Phys 2015. [DOI: 10.1016/j.ijrobp.2015.07.490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
110
|
Lin G, Huang YT, Chao A, Ng KK, Yang LY, Ng SH, Lai CH. Influence of menopausal status on diagnostic accuracy of myometrial invasion in endometrial cancer: diffusion-weighted and dynamic contrast-enhanced MRI at 3 T. Clin Radiol 2015; 70:1260-8. [DOI: 10.1016/j.crad.2015.06.097] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2014] [Revised: 04/14/2015] [Accepted: 06/29/2015] [Indexed: 01/16/2023]
|
111
|
Davis J, Lin G, Oh J, Crowson C, Achenbach S, Therneau T, Matteson E, Rodeheffer R, Gabriel S. THU0151 Five-year Progression of Left Ventricular Diastolic Dysfunction in Patients with Rheumatoid Arthritis Compared to the General Population. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.4711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
112
|
Yang S, Shi J, Gong F, Zhang S, Lu C, Tan K, Leng L, Hao M, He H, Gu Y, Lu G, Lin G. Cleavage pattern predicts developmental potential of day 3 human embryos produced by IVF. Reprod Biomed Online 2015; 30:625-34. [DOI: 10.1016/j.rbmo.2015.02.008] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2014] [Revised: 02/14/2015] [Accepted: 02/17/2015] [Indexed: 12/16/2022]
|
113
|
Chen S, Sun P, Wang S, Lin G, Wang T. Effects of heart rate variability biofeedback on cardiovascular responses and autonomic sympathovagal modulation following stressor tasks in prehypertensives. J Hum Hypertens 2015; 30:105-11. [DOI: 10.1038/jhh.2015.27] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2014] [Revised: 02/06/2015] [Accepted: 02/26/2015] [Indexed: 11/09/2022]
|
114
|
Li H, Xu Y, Guan R, Matheu M, Lei H, Tian W, Gao Z, Lin G, Guo Y, Xin Z, Song W. Icariside II prevents high-glucose-induced injury on human cavernous endothelial cells through Akt-eNOS signaling pathway. Andrology 2015; 3:408-16. [PMID: 25641754 DOI: 10.1111/andr.303] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2014] [Revised: 10/01/2014] [Accepted: 10/03/2014] [Indexed: 12/21/2022]
|
115
|
Lei H, Yang X, Zheng B, Lin G, Baker NA. CONSTRUCTING SURROGATE MODELS OF COMPLEX SYSTEMS WITH ENHANCED SPARSITY: QUANTIFYING THE INFLUENCE OF CONFORMATIONAL UNCERTAINTY IN BIOMOLECULAR SOLVATION. MULTISCALE MODELING & SIMULATION : A SIAM INTERDISCIPLINARY JOURNAL 2015; 13:1327-1353. [PMID: 26766929 PMCID: PMC4707684 DOI: 10.1137/140981587] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Biomolecules exhibit conformational fluctuations near equilibrium states, inducing uncertainty in various biological properties in a dynamic way. We have developed a general method to quantify the uncertainty of target properties induced by conformational fluctuations. Using a generalized polynomial chaos (gPC) expansion, we construct a surrogate model of the target property with respect to varying conformational states. To alleviate the high-dimensionality of the corresponding stochastic space, we propose a method to increase the sparsity of the gPC expansion by defining a set of conformational "active space" random variables. With the increased sparsity, we employ the compressive sensing method to accurately construct the surrogate model. We demonstrate the performance of the surrogate model by evaluating fluctuation-induced uncertainty in solvent-accessible surface area for the bovine trypsin inhibitor protein system and show that the new approach offers more accurate statistical information than standard Monte Carlo approaches. Furthermore, the constructed surrogate model also enables us to directly evaluate the target property under various conformational states, yielding a more accurate response surface than standard sparse grid collocation methods. In particular, the new method provides higher accuracy in high-dimensional systems, such as biomolecules, where sparse grid performance is limited by the accuracy of the computed quantity of interest. Our new framework is generalizable and can be used to investigate the uncertainty of a wide variety of target properties in biomolecular systems.
Collapse
|
116
|
Cohen AE, Soltis SM, González A, Aguila L, Alonso-Mori R, Barnes CO, Baxter EL, Brehmer W, Brewster AS, Brunger AT, Calero G, Chang JF, Chollet M, Ehrensberger P, Eriksson TL, Feng Y, Hattne J, Hedman B, Hollenbeck M, Holton JM, Keable S, Kobilka BK, Kovaleva EG, Kruse AC, Lemke HT, Lin G, Lyubimov AY, Manglik A, Mathews II, McPhillips SE, Nelson S, Peters JW, Sauter NK, Smith CA, Song J, Stevenson HP, Tsai Y, Uervirojnangkoorn M, Vinetsky V, Wakatsuki S, Weis WI, Zadvornyy OA, Zeldin OB, Zhu D, Hodgson KO. Goniometer-based femtosecond crystallography with X-ray free electron lasers. Proc Natl Acad Sci U S A 2014; 111:17122-7. [PMID: 25362050 PMCID: PMC4260607 DOI: 10.1073/pnas.1418733111] [Citation(s) in RCA: 102] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The emerging method of femtosecond crystallography (FX) may extend the diffraction resolution accessible from small radiation-sensitive crystals and provides a means to determine catalytically accurate structures of acutely radiation-sensitive metalloenzymes. Automated goniometer-based instrumentation developed for use at the Linac Coherent Light Source enabled efficient and flexible FX experiments to be performed on a variety of sample types. In the case of rod-shaped Cpl hydrogenase crystals, only five crystals and about 30 min of beam time were used to obtain the 125 still diffraction patterns used to produce a 1.6-Å resolution electron density map. For smaller crystals, high-density grids were used to increase sample throughput; 930 myoglobin crystals mounted at random orientation inside 32 grids were exposed, demonstrating the utility of this approach. Screening results from cryocooled crystals of β2-adrenoreceptor and an RNA polymerase II complex indicate the potential to extend the diffraction resolution obtainable from very radiation-sensitive samples beyond that possible with undulator-based synchrotron sources.
Collapse
|
117
|
Zhang K, Wang L, Sun Y, Zhang R, Lin G, Xie J, Li J. Improving the safety of blood transfusion by using a combination of two screening assays for hepatitis C virus. Transfus Med 2014; 24:297-304. [PMID: 25262976 DOI: 10.1111/tme.12152] [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: 04/22/2014] [Revised: 07/22/2014] [Accepted: 08/19/2014] [Indexed: 12/30/2022]
Abstract
BACKGROUND AND OBJECTIVES To illustrate that the combination of a single nucleic acid amplification test (NAT) with a single immunoassay for hepatitis C virus (HCV) detection, as proposed internationally, may lead to the omission of anti-HCV reactive sera with non-reactive NAT results. MATERIALS AND METHODS In total, 822 of 519, 299 serum samples from 11 blood centres in China were retested for anti-HCV by using 10 screening assays to detect HCV antibodies. A recombinant immunoblot assay (RIBA HCV 3·0; Ortho-Clinical Diagnostics) was performed to define confirmed HCV infection status. Samples with positive or indeterminate RIBA-HCV results were tested by quantitative tests for HCV RNA (Roche Diagnostics). RESULTS We found that 47 of the 822 (5·72%) serum samples were RIBA-positive without detectable HCV RNA. For these samples, the 10 anti-HCV immunoassays gave discordant and unsatisfactory results (detection rate ranging from 10·64 to 34·04%; ratio per 100 000 donations ranging from 5·97 to 8·09). Compared with a single anti-HCV screening assay, the two-assay combination increased the detection of these samples. The five best combinations [Sorin and Lizhu enzyme immunoassays (EIAs), Ortho and Lizhu EIAs, Sorin and Wantai EIAs, Sorin EIA and Roche CIA and Ortho and Wantai EIAs] increased the detection rate from 46·81 to 55·57%, thus reducing the ratio per 100 000 donations of HCV-seropositive samples. CONCLUSION The combination of two anti-HCV screening immunoassays in parallel with an HCV NAT is a better strategy for HCV detection in blood centres to improve the safety of blood transfusion.
Collapse
|
118
|
Lin G, Shi X, Chen S, Lei L, You X, Huang M, Luo L, Li Y, Zhao X, Yan F. Effects of micro-amounts of Porphyromonas gingivalis
lipopolysaccharide on rabbit inflammatory immune response and development of atherosclerosis. J Periodontal Res 2014; 50:356-62. [PMID: 25065326 DOI: 10.1111/jre.12214] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/08/2014] [Indexed: 11/29/2022]
|
119
|
Lin G, Hill DK, Andrejeva G, Boult JKR, Troy H, Fong ACLFWT, Orton MR, Panek R, Parkes HG, Jafar M, Koh DM, Robinson SP, Judson IR, Griffiths JR, Leach MO, Eykyn TR, Chung YL. Dichloroacetate induces autophagy in colorectal cancer cells and tumours. Br J Cancer 2014; 111:375-85. [PMID: 24892448 PMCID: PMC4102941 DOI: 10.1038/bjc.2014.281] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2014] [Revised: 04/22/2014] [Accepted: 04/30/2014] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Dichloroacetate (DCA) has been found to have antitumour properties. METHODS We investigated the cellular and metabolic responses to DCA treatment and recovery in human colorectal (HT29, HCT116 WT and HCT116 Bax-ko), prostate carcinoma cells (PC3) and HT29 xenografts by flow cytometry, western blotting, electron microscopy, (1)H and hyperpolarised (13)C-magnetic resonance spectroscopy. RESULTS Increased expression of the autophagy markers LC3B II was observed following DCA treatment both in vitro and in vivo. We observed increased production of reactive oxygen species (ROS) and mTOR inhibition (decreased pS6 ribosomal protein and p4E-BP1 expression) as well as increased expression of MCT1 following DCA treatment. Steady-state lactate excretion and the apparent hyperpolarised [1-(13)C] pyruvate-to-lactate exchange rate (k(PL)) were decreased in DCA-treated cells, along with increased NAD(+)/NADH ratios and NAD(+). Steady-state lactate excretion and k(PL) returned to, or exceeded, control levels in cells recovered from DCA treatment, accompanied by increased NAD(+) and NADH. Reduced k(PL) with DCA treatment was found in HT29 tumour xenografts in vivo. CONCLUSIONS DCA induces autophagy in cancer cells accompanied by ROS production and mTOR inhibition, reduced lactate excretion, reduced k(PL) and increased NAD(+)/NADH ratio. The observed cellular and metabolic changes recover on cessation of treatment.
Collapse
|
120
|
Zhao J, Lin G, Zhang WH, Ge M, Zhang Y. Contribution of CD14-159C/T polymorphism to tuberculosis susceptibility: a meta-analysis. Int J Tuberc Lung Dis 2014; 17:1472-8. [PMID: 24125453 DOI: 10.5588/ijtld.13.0264] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND CD14 plays an important role in recognising the tuberculosis (TB) antigen and initiating immune response. CD14-159C/T polymorphism has been reported to be associated with susceptibility to TB in some, but not all studies. OBJECTIVE To comprehensively evaluate the correlation between CD14-159C/T polymorphism and susceptibility to TB. METHODS Relevant studies from six English-language databases were searched up to 15 March 2013. Crude odd ratios (ORs) with 95% confidence interval (CIs) were calculated to assess the strength of associations. RESULTS Eight eligible studies including 3583 subjects were retained for the meta-analysis. T-allele and TT homozygosis might increase TB risk in the overall analysis (T vs. C: OR 1.30, 95%CI 1.03-1.64, P = 0.03 and TT vs. CC+CT: OR 1.52, 95%CI 1.12-2.08, P = 0.01). Similar correlations were observed among human immunodeficiency virus negative subjects. Strong associations were also found between CD14-159C/T and TB in Asians. Asian individuals with the T-allele and the TT genotype had a significantly increased risk of TB (T vs. C: OR 1.46, 95%CI 1.27-1.68, P = 0.00; TT vs. CC: OR 1.83, 95%CI 1.38-2.44, P = 0.00 and TT vs. CC+CT: OR 1.84, 95%CI 1.55-2.19, P = 0.00). No associations were detected in the pulmonary TB and extra-pulmonary TB groups. CONCLUSION CD14-159C/T contributes to TB susceptibility; the T-allele and TT homozygosis are potential risk factors, particularly in Asians.
Collapse
|
121
|
Xiong B, Tan K, Tan YQ, Gong F, Zhang SP, Lu CF, Luo KL, Lu GX, Lin G. Using SNP array to identify aneuploidy and segmental imbalance in translocation carriers. GENOMICS DATA 2014; 2:92-5. [PMID: 26484079 PMCID: PMC4535754 DOI: 10.1016/j.gdata.2014.05.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2014] [Revised: 05/14/2014] [Accepted: 05/15/2014] [Indexed: 11/06/2022]
Abstract
Translocation is one of the more common structural rearrangements of chromosomes, with a prevalence of 0.2%. The two most common types of chromosomal translocations, Robertsonian and reciprocal, usually result in no obvious phenotypic abnormalities when balanced. However, these are still associated with reproductive risks, such as infertility, spontaneous abortion and the delivery of babies with mental retardation or developmental delay. In recent years, array-based whole-genome amplification (WGA) technologies, including microarray comparative genomic hybridization (array CGH; aCGH) and single-nucleotide polymorphism (SNP) micro-arrays, have enabled the screening of every chromosome for whole-chromosome aneuploidy and segmental imbalance. These techniques have been shown to have clinical application for translocation carriers. Promising studies have indicated that array-based PGD of translocation carriers can lead to transfer pregnancy rates of 45–70% [2]. In addition to genetic testing techniques, the embryo biopsy stage (polar body, cleavage embryo or blastocyst) and the mode of embryo transfer (fresh or frozen embryos) can affect the outcome of PGD. It is now generally recommended that blastomere biopsy should be replaced by blastocyst biopsy to avoid a high mosaic rate and biopsy-related damage to cleavage-stage embryos, which might affect embryo development. However, more clinical data are required to confirm that the technique of SNP array-based PGD (SNP-PGD) combined with trophectoderm (TE) biopsy and frozen embryo transfer (FET) is superior to traditional FISH-PGD combined with Day 3 (D3) blastomere biopsy and fresh embryo transfer.
Collapse
|
122
|
Lu Y, Ran T, Lin G, Jin Q, Jin J, Li H, Guo H, Lu T, Wang Y. Novel 1 H-Pyrazole-3-carboxamide Derivatives: Synthesis, Anticancer Evaluation and Identification of Their DNA-Binding Interaction. Chem Pharm Bull (Tokyo) 2014; 62:238-46. [DOI: 10.1248/cpb.c13-00676] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
123
|
Dang Y, Lin G, Xie Y, Duan J, Ma P, Li G, Ji G. Quantitative Determination of Myricetin in Rat Plasma by Ultra Performance Liquid Chromatography Tandem Mass Spectrometry and its Absolute Bioavailability. Drug Res (Stuttg) 2013; 64:516-22. [DOI: 10.1055/s-0033-1363220] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
124
|
Ferretti L, Qiu X, Villalta J, Lin G. Comparaison de l’efficacité de différentes compresses hémostatiques sur un model de néphrectomie partielle et de plaie aortique chez le rat. Prog Urol 2013. [DOI: 10.1016/j.purol.2013.08.199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
125
|
Li J, Lin G, Zhang B, Zhong Y, Chen X, Zhuang G. Pregnancy prediction by beta-human chorionic gonadotropin in spent embryo culture media in single blastocyst transfer cycles. Fertil Steril 2013. [DOI: 10.1016/j.fertnstert.2013.07.1181] [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]
|