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720篇 您的检索式:作者名="Michelle T"
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1Anti-inflammatory pathways and alcoholic liver disease: Role of an adiponectin/interleukin-10/heme oxygenase-1 pathway显示文摘The development of alcoholic liver disease (ALD) is a complex process involving both the parenchymal and non-parenchymal cells in the liver. Enhanced inflammation in the liver during ethanol exposure is an important contributor to injury. Kupffer cells, the resident macrophages in liver, are particularly critical to the onset of ethanol-induced liver injury. Chronic ethanol exposure sensitizes Kupffer cells to activation by lipopolysaccharide via Toll-like receptor 4. This sensitization enhances production of inflammatory mediators, such as tumor necrosis factor-α and reactive oxygen species, that contribute to hepatocyte dysfunction, necrosis, apoptosis, and fibrosis. Impaired resolution of the inflammatory process probably also contributes to ALD. The resolution of inflammation is an active, highly coordinated response that can potentially be manipulated via therapeutic interventions to treat chronic inflammatory diseases. Recent studies have identif ied an adiponectin/interleukin-10/heme oxygenase-1 (HO-1) pathway that is profoundly effective in dampening the enhanced activation of innate immune responses in primary cultures of Kupffer cells, as well as in an in vivo mouse model of chronic ethanol feeding. Importantly, induction of HO-1 also reduces ethanol-induced hepatocellular apoptosis in this in vivo model. Based on these data, we hypothesize that the development of therapeutic agents to regulate HO-1 and its downstream targets could be useful in enhancing the resolution of inflammation during ALD and preventing progression of early stages of liver injury.Palash Mandal Michele T Pritchard Laura E Nagy 2010World Journal of Gastroenterology2010,16,11:11
2The hypoxia-inducible factor-1α activates ectopic production of fibroblast growth factor 23 in tumor-induced osteomalacia显示文摘Tumor-induced osteomalacia(TIO) is a rare paraneoplastic syndrome in which ectopic production of fibroblast growth factor 23(FGF23) by non-malignant mesenchymal tumors causes phosphate wasting and bone fractures. Recent studies have implicated the hypoxia-inducible factor-1α(HIF-1α) in other phosphate wasting disorders caused by elevated FGF23, including X-linked hypophosphatemic rickets and autosomal dominant hypophosphatemia. Here we provide evidence that HIF-1α mediates aberrant FGF23 in TIO by transcriptionally activating its promoter. Immunohistochemical studies in phosphaturic mesenchymal tumors resected from patients with documented TIO showed that HIF-1α and FGF23 were co-localized in spindleshaped cells adjacent to blood vessels. Cultured tumor tissue produced high levels of intact FGF23 and demonstrated increased expression of HIF-1α protein. Transfection of MC3T3-E1 and Saos-2 cells with a HIF-1α expression construct induced the activity of a FGF23 reporter construct. Prior treatment of tumor organ cultures with HIF-1α inhibitors decreased HIF-1α and FGF23 protein accumulation and inhibited HIF-1α-induced luciferase reporter activity in transfected cells. Chromatin immunoprecipitation assays confirmed binding to a HIF-1α consensus sequence within the proximal FGF23 promoter, which was eliminated by treatment with a HIF-1α inhibitor. These results show for the first time that HIF-1α is a direct transcriptional activator of FGF23 and suggest that upregulation of HIF-1α activity in TIO contributes to the aberrant FGF23 production in these patients.Qian Zhang Michele Doucet Ryan E Tomlinson Xiaobin Han L Darryl Quarles Michael T Collins Thomas L Clemens 2016Bone Research2016,4,2:6
3Acupuncture Treatment for Idiopathic Trigeminal Neuralgia:A Longitudinal Case-Control Double Blinded Study显示文摘Objective: To evaluate the treatment effect of acupuncture on patients with idiopathic trigeminal neuralgia(ITN) by case-control longitudinal blinded study. Methods: Sixty ITN patients and 30 healthy subjects were included. The ITN patients were randomly assigned to acupuncture group(15 cases), sham-acupuncture group(15 cases) and carbamazepine group(30 cases), respectively. Clinical orofacial evaluation(including pain intensity and medication doses), research diagnostic criteria for temporomandibular disorders(RDC/TMD) and Helkimo indexes(for functional evaluation of the masticatory system), and quantitative sensory testing for sensory thresholds(gustative, olfactory, cold, warm, touch, vibration and superficial and deep pain) were evaluated before treatment, immediately after treatment, and 6 months after treatment. Results: The mean pain intensity by the Visual Analogue Scale only decreased in the acupuncture group at the last evaluation(P=0.012). Patients in the sham-acupuncture group had an increase in carbamazepine doses according to the prescriptions(P<0.01). There was a reduction in secondary myofascial pain and mandibular limitations at the acupuncture and sham-acupuncture groups, however only the acupuncture group kept the changes after 6 months(P<0.01, P=0.023). There was a decrease in mechanical thresholds in the acupuncture group(tactile, P<0.01; vibration, P=0.027) and an increase in deep pain thresholds in both acupuncture and sham-acupuncture groups(P=0.013). Conclusion: Acupuncture can be an option in the treatment of ITN due to its analgesic effect in both ITN and secondary myofascial pain associated with it.Michelle Cristina Ichida Mariana Zemuner Jorge Hosomi Hong Jin Pai Manoel Jacobsen Teixeira JoséTadeu Tesseroli de Siqueira Silvia R D T de Siqueira 2017Chinese Journal of Integrative Medicine2017,23,11:6
4Recombinant amelogenin regulates the bioactivity of mouse cementoblasts in vitro显示文摘Amelogenin(AMG) is a cell adhesion molecule that has an important role in the mineralization of enamel and regulates events during dental development and root formation. The purpose of the present study was to investigate the effects of recombinant human AMG(rhAMG) on mineralized tissue-associated genes in cementoblasts. Immortalized mouse cementoblasts(OCCM-30)were treated with different concentrations(0.1, 1, 10, 100, 1 000, 10 000, 100 000 ng · mL^(-1)) of recombinant human AMG(rhAMG)and analyzed for proliferation, mineralization and mRNA expression of bone sialoprotein(BSP), osteocalcin(OCN), collagen type I(COL I), osteopontin(OPN), runt-related transcription factor 2(Runx2), cementum attachment protein(CAP), and alkaline phosphatase(ALP) genes using quantitative RT-PCR. The dose response of rhAMG was evaluated using a real-time cell analyzer.Total RNA was isolated on day 3, and cell mineralization was assessed using von Kossa staining on day 8. COL I, OPN and lysosomalassociated membrane protein-1(LAMP-1), which is a cell surface binding site for amelogenin, were evaluated using immunocytochemistry. F-actin bundles were imaged using confocal microscopy. rhAMG at a concentration of 100 000 ng · mL^(-1) increased cell proliferation after 72 h compared to the other concentrations and the untreated control group. rhAMG(100 000 ng · mL^(-1)) upregulated BSP and OCN mRNA expression levels eightfold and fivefold, respectively. rhAMG at a concentration of 100 000 ng · mL^(-1) remarkably enhanced LAMP-1 staining in cementoblasts. Increased numbers of mineralized nodules were observed at concentrations of 10 000 and 100 000 ng · mL^(-1) rhAMG. The present data suggest that rhAMG is a potent regulator of gene expression in cementoblasts and support the potential application of rhAMG in therapies aimed at fast regeneration of damaged periodontal tissue.Sema S.Hakki S.Buket Bozkurt Emre Türkay Michel Dard Nuhan Purali Werner Gotz 2018International Journal of Oral Science2018,10,2:3
5Towards a standard diet-induced and biopsy-confirmed mouse model of non-alcoholic steatohepatitis: Impact of dietary fat source显示文摘BACKGROUND The trans-fat containing AMLN(amylin liver non-alcoholic steatohepatitis,NASH)diet has been extensively validated in C57BL/6J mice with or without the Lep^ob/Lep^ob(ob/ob)mutation in the leptin gene for reliably inducing metabolic and liver histopathological changes recapitulating hallmarks of NASH.Due to a recent ban on trans-fats as food additive,there is a marked need for developing a new diet capable of promoting a compatible level of disease in ob/ob and C57BL/6J mice.AIM To develop a biopsy-confirmed mouse model of NASH based on an obesogenic diet with trans-fat substituted by saturated fat.METHODS Male ob/ob mice were fed AMLN diet or a modified AMLN diet with trans-fat(Primex shortening)substituted by equivalent amounts of palm oil[Gubra amylin NASH,(GAN)diet]for 8,12 and 16 wk.C57BL/6J mice were fed the same diets for 28 wk.AMLN and GAN diets had similar caloric content(40%fat kcal),fructose(22%)and cholesterol(2%)level.RESULTS The GAN diet was more obesogenic compared to the AMLN diet and impaired glucose tolerance.Biopsy-confirmed steatosis,lobular inflammation,hepatocyte ballooning,fibrotic liver lesions and hepatic transcriptome changes were similar in ob/ob mice fed the GAN or AMLN diet.C57BL/6J mice developed a mild to moderate fibrotic NASH phenotype when fed the same diets.CONCLUSION Substitution of Primex with palm oil promotes a similar phenotype of biopsyconfirmed NASH in ob/ob and C57BL/6J mice,making GAN diet-induced obese mouse models suitable for characterizing novel NASH treatments.Michelle L Boland Denise Oro Kirstine S T■lb■l Sebastian T Thrane Jens Christian Nielsen Taylor S Cohen David E Tabor Fiona Fernandes Andrey Tovchigrechko Sanne S Veidal Paul Warrener Bret R Sellman Jacob Jelsing Michael Feigh Niels Vrang James L Trevaskis Henrik H Hansen 2019World Journal of Gastroenterology2019,25,33:3
6Proton nuclear magnetic resonance-based metabonomic models for non-invasive diagnosis of liver fibrosis in chronic hepatitis C:Optimizing the classification of intermediate fibrosis显示文摘AIM To develop metabonomic models(MMs), using 1 H nuclear magnetic resonance(NMR) spectra of serum, to predict significant liver fibrosis(SF: Metavir ≥ F2), advanced liver fibrosis(AF: METAVIR ≥ F3) and cirrhosis(C: METAVIR = F4 or clinical cirrhosis) in chronic hepatitis C(CHC) patients. Additionally, to compare the accuracy of the MMs with the aspartate aminotransferase to platelet ratio index(APRI) and fibrosis index based on four factors(FIB-4). METHODS Sixty-nine patients who had undergone biopsy in the previous 12 mo or had clinical cirrhosis were included. The presence of any other liver disease was a criterion for exclusion. The MMs, constructed using partial least squares discriminant analysis and linear discriminant analysis formalisms, were tested by cross-validation, considering SF, AF and C. RESULTS Results showed that forty-two patients(61%) presented SF, 28(40%) AF and 18(26%) C. The MMs showed sensitivity and specificity of 97.6% and 92.6% to predict SF; 96.4% and 95.1% to predict AF; and 100% and 98.0% to predict C. Besides that, the MMs correctly classified all 27(39.7%) and 25(38.8%) patients with intermediate values of APRI and FIB-4, respectively. CONCLUSION The metabonomic strategy performed excellently in predicting significant and advanced liver fibrosis in CHC patients, including those in the gray zone of APRI and FIB-4, which may contribute to reducing the need for these patients to undergo liver biopsy.Andrea Dória Batista Carlos Jonnatan Pimentel Barros Tássia Brena Barroso Carneiro Costa Michele Maria Goncalves de Godoy Ronaldo Dionísio Silva Joelma Carvalho Santos Mariana Montenegro de Melo Lira Norma ThoméJucá Edmundo Pessoa de Almeida Lopes Ricardo Oliveira Silva 2018World Journal of Hepatology2018,10,1:2
7Effect of Cyclosporine on Left Ventricular Remodeling After Reperfused Myocardial Infarction显示文摘Nathan Mewton Pierre Croisille Gerald Gahide Gilles Rioufol Eric Bonnefoy Ingrid Sanchez Thien Tri Cung Catherine Sportouch Denis Angoulvant Gérard Finet Xavier André-Fou?t Geneviève Derumeaux Christophe Piot Hélène Vernhet Didier Revel Michel Ovize 2010Journal of the American College of Cardiology2010,,12:2
8Why Is the Climate Forcing of Sulfate Aerosols So Uncertain?显示文摘Sulfate aerosol particles have strong scattering effect on the solar radiation transfer which results in in- creasing the planet albedo and, hence, tend to cool the earth-atmosphere system, Also, aerosols can act as the cloud condensation nuclei (CCN) which tend to increase the albedo of clouds and cool the global warm- ing. The ARPEGE-Climat version 3 AGCM with FMR radiation scheme is used to estimate the direct and indirect radiative forcing of sulfate aerosols. For minimizing the uncertainties in assessing this kind of cool- ing effect, all kinds of factors are analyzed which have been mixed in the assessment process and may lead to the different results of the radiative forcing of aerosols, It is noticed that one of the uncertainties to assess the climate forcing of aerosols by GCM results from the different definition of radiative forcing that was used. In order to clarify this vague idea, the off-line case for considering no feedbacks and on-line case for including all the feedbacks have been used for assessment. The direct forcing of sulfate aerosols in off-line case is -0.57 W/ m2 and -0.38 W / m2 for the clear sky and all sky respectively. The value of on-line case appears to be a little larger than that in off-line case chiefly due to the feedback of clouds. The indirect forc- ing of sulfate aerosols in off line case is -1 .4 W / m2 and -1 .0 W / m2 in on-line case. The radiative forcing of sulfate aerosols has obvious regional characteristics. There is a larger negative radiative forcing over North America, Europe and East Asia. If the direct and indirect forcing are added together, it is enough to offset the positive radiative forcing induced by the greenhouse gases in these regions.Hu Rongming, Serge Planton, Michel Deque, Pascal Marquet and Alain Braun Centre national de recherches m t orologiques, Meteo-France 2001Advances in Atmospheric Sciences2001,18,6:2
9Expression, purification, crystallization and preliminary x-ray analysis of the kappa-carrageenase from Pseudoalteromonas carrageenovora 显示文摘Michel G Barbeyrion T Flament D 1999Acta Crystallogr D Biol Crystallogr1999,55,4:1
10Fading Correlation in Wireless MIMO Communication Systems 显示文摘MICHEL T LVRLAC WOLFGANG UTSCHICK JOSEF A NOSSEK 2003IEEE J Select Areas Commun2003,21,5:1
11Arterial emboliz-ation for massive hematuria following transurethral prostatectomy显示文摘Michel F Dubruille T Jean- Pierre C 2002J Urol2002,168,:1
12Nocturia: a non-specific but important symptom of urological disease 显示文摘Schneider T de la Rosette J J Michel M C 2009Int J Urol2009,16,3:1
13L-Carrageenases constitute a novel family of glycoside hydrolases, unrelated to that of K-carrageenases显示文摘Barbeyron T Michel G Potin P 2000J Biol Chem2000,275,35:1
14CD56^bright natural killer (NK) cells: an important NK cell subset显示文摘Poli A Michel T Theresine M 2009Immunology2009,126,4:1
15EPK activation upon hypoxia:involvement in HIF-1 activation显示文摘Minet E Arnould T Michel G 2000FEBS Letters2000,468,1:1
16The von Hippel-Lindau Chuvash mutation promotes pulmonary hypertension and fibrosis in mice显示文摘Michele M H Theresa R Wang T 2010J Clin Invest2010,120,3:1
17Csaky SU5416 induces premature senescence in endothelial progenitor cells from patients with age-related macular degeneration 显示文摘Michelle T Marc JB Frank K 2011Mol Vis2011,17,:1
18Pulsatile flow of non-newtonian fluid through arterial stenoses显示文摘Cheng T Michel D 1996J Biomech1996,29,7:1
19Effect of surfactant addition on phenanthrene biodegradation in sediments显示文摘Harry J T Joseph B H Michelle T J 1995Environ Toxicol Chem1995,14,6:1
20Fundamentals and applications of late post-discharge processes显示文摘Belmonte T Czerwiec T Michel H 2001Surface and Coating Technology2001,142,:1
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