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Díaz SA, Reichhardt C, Arovas DP, Saxena A, Reichhardt CJO. Avalanches and Criticality in Driven Magnetic Skyrmions. PHYSICAL REVIEW LETTERS 2018; 120:117203. [PMID: 29601757 DOI: 10.1103/physrevlett.120.117203] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Indexed: 06/08/2023]
Abstract
We show using numerical simulations that slowly driven Skyrmions interacting with random pinning move via correlated jumps or avalanches. The avalanches exhibit power-law distributions in their duration and size, and the average avalanche shape for different avalanche durations can be scaled to a universal function, in agreement with theoretical predictions for systems in a nonequilibrium critical state. A distinctive feature of Skyrmions is the influence of the nondissipative Magnus term. When we increase the ratio of the Magnus term to the damping term, a change in the universality class of the behavior occurs, the average avalanche shape becomes increasingly asymmetric, and individual avalanches exhibit motion in the direction perpendicular to their own density gradient.
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Hamdan A, Saxena A, Rao G, Ivanov M. Compression of a giant pseudomeningocele causing transient anoxic seizures-a case report. Acta Neurochir (Wien) 2018; 160:479-485. [PMID: 29299677 DOI: 10.1007/s00701-017-3446-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Accepted: 12/21/2017] [Indexed: 11/28/2022]
Abstract
Transient anoxic seizure upon application of pressure on a giant pseudomeningocele has never been reported in the literature; such abrupt changes in intracranial pressure due to large volume of cerebrospinal fluid (CSF) translocation, if left untreated may lead to permanent cerebral hypoxic injury and death. Here we describe a case of a 26-year-old woman who had undergone lumbar disc surgery in another unit few months ago and developed a large lump around her back. Any pressure on the lump resulted in headaches and at times episodes of seizures. Clinical examination revealed a very large fluid-filled lump consistent with a giant pseudomeningocele, confirmed by an MRI. A video EEG while applying pressure on the lump was recorded. The patient developed a typical seizure attack with a characteristic pattern of cerebral anoxia, and a paired ECG showed irregular rhythm with junctional and ventricular ectopic beats during the latter part of the attack, raising a suspicion of asystole. Upon relieving the pressure off the lump, the patient gradually regained consciousness with no permanent neurological deficit. We then discuss the pathophysiology of anoxic seizures and highlight the need to be vigilant in managing patients with such lesions in order to prevent permanent cerebral hypoxic injury and death.
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Yadav P, Masroor M, Nandi K, Kaza RCM, Jain SK, Khurana N, Saxena A. Promoter Methylation of BRCA1, DAPK1 and RASSF1A is
Associated with Increased Mortality among Indian Women
with Breast Cancer. Asian Pac J Cancer Prev 2018; 19:443-448. [PMID: 29480000 PMCID: PMC5980932 DOI: 10.22034/apjcp.2018.19.2.443] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Background: Promoter methylation has been observed for several genes in association with cancer development and
progression. Hypermethylation mediated-silencing of tumor suppressor genes (TSGs) may contribute to breast cancer
pathogenesis. The present study was conducted to investigate the promoter methylation status of BRCA1, DAPK1 and
RASSF1A genes in Indian women with breast cancer. Materials and Methods: Promoter methylation was evaluated
in DNA extracted from mononuclear cells (MNCs) in peripheral blood samples of 60 histopathologically confirmed
newly diagnosed, untreated cases of breast cancer as well as 60 age and sex matched healthy controls using MS-PCR.
Association of promoter methylation with breast cancer-specific mortality was analyzed with Cox proportional hazards
models. Kaplan-Meier survival analysis was performed for overall survival of the breast cancer patients. Results: We
observed a significant increase of BRCA1, DAPK1 and RASSF1A promoter methylation levels by 51.7% (P <0.001),
55.0% (P <0.001) and 46.6% (P <0.001), respectively, when compared to healthy controls. A strong correlation was
noted between hypermethylation of the tumor suppressor genes BRCA1 (P= 0.009), DAPK1 (P= 0.008) and RASSF1A
(P= 0.02)) with early and advanced stages of breast cancer patients. We also found that breast cancer-specific mortality
was significantly associated with promoter methylation of BRCA1 [HR and 95% CI: 3.25 (1.448-7.317)] and DAPK1
[HR and 95% CI: 2.32 (1.05-5.11)], whereas limited significant link was evident with RASSF1A [HR and 95% CI: 1.54
(0.697-3.413]. Conclusion: Our results suggest that promoter methylation of BRCA1, DAPK1 and RASSF1A genes
may be associated with disease progression and poor overall survival of Indian women with breast cancer.
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Lopes F, Keita ÅV, Saxena A, Reyes JL, Mancini NL, Al Rajabi A, Wang A, Baggio CH, Dicay M, van Dalen R, Ahn Y, Carneiro MBH, Peters NC, Rho JM, MacNaughton WK, Girardin SE, Jijon H, Philpott DJ, Söderholm JD, McKay DM. ER-stress mobilization of death-associated protein kinase-1-dependent xenophagy counteracts mitochondria stress-induced epithelial barrier dysfunction. J Biol Chem 2018; 293:3073-3087. [PMID: 29317503 DOI: 10.1074/jbc.ra117.000809] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Revised: 12/21/2017] [Indexed: 12/14/2022] Open
Abstract
The gut microbiome contributes to inflammatory bowel disease (IBD), in which bacteria can be present within the epithelium. Epithelial barrier function is decreased in IBD, and dysfunctional epithelial mitochondria and endoplasmic reticulum (ER) stress have been individually associated with IBD. We therefore hypothesized that the combination of ER and mitochondrial stresses significantly disrupt epithelial barrier function. Here, we treated human colonic biopsies, epithelial colonoids, and epithelial cells with an uncoupler of oxidative phosphorylation, dinitrophenol (DNP), with or without the ER stressor tunicamycin and assessed epithelial barrier function by monitoring internalization and translocation of commensal bacteria. We also examined barrier function and colitis in mice exposed to dextran sodium sulfate (DSS) or DNP and co-treated with DAPK6, an inhibitor of death-associated protein kinase 1 (DAPK1). Contrary to our hypothesis, induction of ER stress (i.e. the unfolded protein response) protected against decreased barrier function caused by the disruption of mitochondrial function. ER stress did not prevent DNP-driven uptake of bacteria; rather, specific mobilization of the ATF6 arm of ER stress and recruitment of DAPK1 resulted in enhanced autophagic killing (xenophagy) of bacteria. Of note, epithelia with a Crohn's disease-susceptibility mutation in the autophagy gene ATG16L1 exhibited less xenophagy. Systemic delivery of the DAPK1 inhibitor DAPK6 increased bacterial translocation in DSS- or DNP-treated mice. We conclude that promoting ER stress-ATF6-DAPK1 signaling in transporting enterocytes counters the transcellular passage of bacteria evoked by dysfunctional mitochondria, thereby reducing the potential for metabolic stress to reactivate or perpetuate inflammation.
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105
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Dietz M, Lederer-Woods C, Aberle O, Andrzejewski J, Audouin L, Bacak M, Balibrea J, Barbagallo M, Bečvář F, Berthoumieux E, Billowes J, Bosnar D, Brown A, Caamaño M, Calviño F, Calviani M, Cano-Ott D, Cardella R, Casanovas A, Cerutti F, Chen YH, Chiaveri E, Colonna N, Cortés G, Cortés-Giraldo MA, Cosentino L, Damone LA, Diakaki M, Domingo-Pardo C, Dressler R, Dupont E, Durán I, Fernández-Dominguez B, Ferrari A, Ferreira P, Finocchiaro P, Furman V, Göbel K, García AR, Garg R, Gawlik A, Gilardoni S, Glodariu T, Goncalves IF, González-Romero E, Griesmayer E, Guerrero C, Gunsing F, Harada H, Heinitz S, Heyse J, Jenkins DG, Jericha E, Käppeler F, Kadi Y, Kahl D, Kalamara A, Kavrigin P, Kimura A, Kivel N, Kokkoris M, Krtička M, Kurtulgil D, Leal-Cidoncha E, Leeb H, Lerendegui-Marco J, Lo Meo S, Lonsdale SJ, Macina D, Marganiec J, Martínez T, Masi A, Massimi C, Mastinu P, Mastromarco M, Maugeri EA, Mazzone A, Mendoza E, Mengoni A, Milazzo PM, Mingrone F, Musumarra A, Negret A, Nolte R, Oprea A, Patronis N, Pavlik A, Perkowski J, Porras I, Praena J, Quesada JM, Radeck D, Rauscher T, Reifarth R, Rubbia C, Ryan JA, Sabateé-Gilarte M, Saxena A, Schillebeeckx P, Schumann D, Sedyshev P, Smith AG, Sosnin NV, Stamatopoulos A, Tagliente G, Tain JL, Tarifeño-Saldivia A, Tassan-Got L, Valenta S, Vannini G, Variale V, Vaz P, Ventura A, Vlachoudis V, Vlastou R, Wallner A, Warren S, Weiss C, Woods PJ, Wright T, Žugec P. First Measurement of 72Ge( n, γ) at n_TOF. EPJ WEB OF CONFERENCES 2018. [DOI: 10.1051/epjconf/201718402005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The slow neutron capture process (s-process) is responsible for producing about half of the elemental abundances heavier than iron in the universe. Neutron capture cross sections on stable isotopes are a key nuclear physics input for s-process studies. The 72Ge(n, γ) cross section has an important influence on production of isotopes between Ge and Zr during s-process in massive stars and therefore experimental data are urgently required. 72Ge(n, γ) was measured at the neutron time-of-flight facility n_TOF (CERN) for the first time at stellar energies. The measurement was performed using an enriched 72GeO2 sample at a flight path of 185m with a set of liquid scintillation detectors (C6D6). The motivation, experiment and current status of the data analysis are reported.
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Yadav HP, Kumar A, Shah N, Chauhan DS, Lone SA, Swain DK, Saxena A. Effect of Cholesterol-loaded Cyclodextrin on Membrane and Acrosome Status of Hariana Bull Sperm during Cryopreservation. CRYO LETTERS 2018; 39:386-390. [PMID: 30963156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
BACKGROUND The membrane and acrosomal integrity of sperm play a vital role in fertilization process; however they are compromised upon cryopreservation. OBJECTIVE To study the effect of cholesterol-loaded cyclodextrin (CLC) on membrane and acrosome status of Hariana bull sperm during cryopreservation. MATERIALS AND METHODS Semen samples collected from Hariana bulls with mass motility ≥ 3+ and individual progressive motility ≥ 70% were utilized in the study. Each ejaculate was split into two parts, one part being evaluated freshly for various seminal attributes and the other part being diluted in Tris diluent (without egg yolk and glycerol) to obtain a final concentration of 120×106 sperm/mL. The diluted semen was divided into four treatments: Group I, without CLC (control); Group II, with CLC at 0.5 mg per 120 million sperm; Group III, at 1.0 mg per 120 million sperm; Group IV, at 2.0 mg per 120 million sperm. All aliquots were incubated for 15 min at 37°C and each sample was diluted with Egg yolk-Tris-Glycerol (EYTG) extender up to 80×106 sperm/mL. The diluted semen samples were packed in French mini straws (0.25 mL), sealed and equilibrated at 4°C for 4 h followed by cryopreservation. The samples at pre-freeze and post-thaw stage were evaluated for membrane and acrosomal integrity, as well as primary, secondary and tertiary acrosomal damages. RESULTS The membrane and acrosomal integrity was significantly higher in group II as compared to groups I, III, and IV, at pre-freeze and post-thaw stage (P<0.05). The primary and secondary acrosomal damage were significantly reduced in group II compared to other groups (P<0.05). No significant difference in tertiary acrosomal damage was found among different groups. CONCLUSION CLC improves the membrane and acrosomal integrity, and reduces primary and secondary acrosomal damages during cryopreservation of Hariana bull sperm.
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Yadav P, Mirza M, Nandi K, Jain S, Kaza R, Khurana N, Saxena A. Prognostic significance of circulating microRNA-155 expression in breast cancer patients. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx653.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Guru SA, Mir R, Bhat M, Najar I, Zuberi M, Sumi M, Masroor M, Gupta N, Saxena A. PDGFRα promoter polymorphisms and expression patterns influence risk of development of imatinib-induced thrombocytopenia in chronic myeloid leukemia: A study from India. Tumour Biol 2017; 39:1010428317713857. [DOI: 10.1177/1010428317713857] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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109
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Ahmad Guru S, Ahmad Bhat M, Rshid Mir A, Ahmad Najar I, Zuberi M, Parveen Sumi M, Kumar Gupta N, Saxena A. PDGFRα polymorphisms influence risk of developing imatinib induced thrombocytopenia inchronic myeloid leukaemia patients. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx697.035] [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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Stamatopoulos A, Tsinganis A, Colonna N, Vlastou R, Kokkoris M, Schillebeeckx P, Plompen A, Heyse J, Žugec P, Barbagallo M, Calviani M, Berthoumieux E, Chiaveri E, Aberle O, Andrzejewski J, Audouin L, Bécares V, Bacak M, Balibrea J, Barros S, Bečvář F, Beinrucker C, Belloni F, Billowes J, Boccone V, Bosnar D, Brugger M, Caamaño M, Calviño F, Cano-Ott D, Cerutti F, Cortés G, Cortés-Giraldo M, Cosentino L, Damone L, Deo K, Diakaki M, Domingo-Pardo C, Dressler R, Dupont E, Durán I, Fernández-Domínguez B, Ferrari A, Ferreira P, Finocchiaro P, Frost R, Furman V, Göbel K, Gómez-Hornillos M, García A, Gheorghe I, Glodariu T, Gonçalves I, González E, Goverdovski A, Griesmayer E, Guerrero C, Gunsing F, Harada H, Heftrich T, Heinitz S, Hernández-Prieto A, Jenkins D, Jericha E, Käppeler F, Kadi Y, Katabuchi T, Kavrigin P, Ketlerov V, Khryachkov V, Kimura A, Kivel N, Krtička M, Leal-Cidoncha E, Lederer C, Leeb H, Lerendegui-Marco J, Licata M, Meo SL, Losito R, Macina D, Marganiec J, Martínez T, Massimi C, Mastinu P, Mastromarco M, Matteucci F, Mendoza E, Mengoni A, Milazzo P, Mingrone F, Mirea M, Montesano S, Musumarra A, Nolte R, Palomo-Pinto F, Paradela C, Patronis N, Pavlik A, Perkowski J, Porras J, Praena J, Quesada J, Rauscher T, Reifarth R, Riego-Perez A, Robles M, Rubbia C, Ryan J, Sabaté-Gilarte M, Saxena A, Schmidt S, Schumann D, Sedyshev P, Smith A, Suryanarayana S, Tagliente G, Tain J, Tarifeño-Saldivia A, Tassan-Got L, Valenta S, Vannini G, Variale V, Vaz P, Ventura A, Vlachoudis V, Wallner A, Warren S, Weigand M, Weiss C, Wright T. Measurement of the240Pu(n,f) cross-section at the CERN n_TOF facility: First results from experimental area II (EAR-2). EPJ WEB OF CONFERENCES 2017. [DOI: 10.1051/epjconf/201714604030] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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111
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Balibrea-Correa J, Mendoza E, Cano-Ott D, Krtička M, Altstadt S, Andrzejewski J, Audouin L, Bécares V, Barbagallo M, Bečvář F, Belloni F, Berthoumieux E, Billowes J, Boccone V, Bosnar D, Brugger M, Calviño F, Calviani M, Carrapiço C, Cerutti F, Chiaveri E, Chin M, Colonna N, Cortés G, Cortés-Giraldo M, Diakaki M, Domingo-Pardo C, Dressler R, Durán I, Eleftheriadis C, Ferrari A, Fraval K, Furman V, Göbel K, Guerrero C, Gómez-Hornillos M, Ganesan S, García A, Giubrone G, Gonçalves I, González E, Goverdovski A, Griesmayer E, Gunsing F, Heftrich T, Heinitz S, Hernández-Prieto A, Heyse J, Jenkins D, Jericha E, Käppeler F, Kadi Y, Karadimos D, Katabuchi T, Ketlerov V, Khryachkov V, Kivel N, Koehler P, Kokkoris M, Kroll J, Lampoudis C, Langer C, Leal-Cidoncha E, Lederer C, Leeb H, Leong L, Lerendegui-Marco J, Licata M, Losito R, Mallick A, Manousos A, Marganiec J, Martínez T, Massimi C, Mastinu P, Mastromarco M, Mengoni A, Milazzo P, Mingrone F, Mirea M, Mondelaers W, Paradela C, Pavlik A, Perkowski J, Plompen A, Praena J, Quesada J, Rauscher T, Reifarth R, Riego-Perez A, Robles M, Rubbia C, Ryan J, Sabaté-Gilarte M, Sarmento R, Saxena A, Schillebeeckx P, Schmidt S, Schumann D, Sedyshev P, Tagliente G, Tain J, Tarifeño-Saldivia A, Tarrío D, Tassan-Got L, Tsinganis A, Valenta S, Vannini G, Variale V, Vaz P, Ventura A, Vermeulen M, Vlachoudis V, Vlastou R, Wallner A, Ware T, Weigand M, Weiss C, Wright T, Žugec P. Measurement of the neutron capture cross section of the fissile isotope 235U with the CERN n_TOF total absorption calorimeter and a fission tagging based on micromegas detectors. EPJ WEB OF CONFERENCES 2017. [DOI: 10.1051/epjconf/201714611021] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Chiaveri E, Aberle O, Andrzejewski J, Audouin L, Bacak M, Balibrea J, Barbagallo M, Bečvář F, Berthoumieux E, Billowes J, Bosnar D, Brown A, Caamaño M, Calviño F, Calviani M, Cano-Ott D, Cardella R, Casanovas A, Cerutti F, Chen Y, Colonna N, Cortés G, Cortés-Giraldo M, Cosentino L, Damone L, Diakaki M, Domingo-Pardo C, Dressler R, Dupont E, Durán I, Fernández-Domínguez B, Ferrari A, Ferreira P, Finocchiaro P, Göbel K, García A, Gawlik A, Gilardoni S, Glodariu T, Gonçalves I, González E, Griesmayer E, Guerrero C, Gunsing F, Harada H, Heinitz S, Heyse J, Jenkins D, Jericha E, Käppeler F, Kadi Y, Kalamara A, Kavrigin P, Kimura A, Kivel N, Kokkoris M, Krtička M, Kurtulgil D, Leal-Cidoncha E, Lederer C, Leeb H, Lerendegui-Marco J, Meo SL, Lonsdale S, Macina D, Marganiec J, Martínez T, Masi A, Massimi C, Mastinu P, Mastromarco M, Maugeri E, Mazzone A, Mendoza E, Mengoni A, Milazzo P, Mingrone F, Musumarra A, Negret A, Nolte R, Oprea A, Patronis N, Pavlik A, Perkowski J, Porras I, Praena J, Quesada J, Radeck D, Rauscher T, Reifarth R, Rubbia C, Ryan J, Sabaté-Gilarte M, Saxena A, Schillebeeckx P, Schumann D, Smith A, Sosnin N, Stamatopoulos A, Tagliente G, Tain J, Tarifeño-Saldivia A, Tassan-Got L, Tsinganis A, Valenta S, Vannini G, Variale V, Vaz P, Ventura A, Vlachoudis V, Vlastou R, Wallner A, Warren S, Woods P, Wright T, Žugec P. The n_TOF facility: Neutron beams for challenging future measurements at CERN. EPJ WEB OF CONFERENCES 2017. [DOI: 10.1051/epjconf/201714603001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Chen Y, Tassan-Got L, Audouin L, Le Naour C, Durán I, Casarejos E, Aberle O, Andrzejewski J, Bécares V, Bacak M, Balibrea J, Barbagallo M, Barros S, Bečvář F, Beinrucker C, Berthoumieux E, Billowes J, Bosnar D, Brugger M, Caamaño M, Calviño F, Calviani M, Cano-Ott D, Cardella R, Casanovas A, Castelluccio D, Cerutti F, Chiaveri E, Colonna N, Cortés G, Cortés-Giraldo M, Cosentino L, Damone L, Diakaki M, Domingo-Pardo C, Dressler R, Dupont E, Fernández-Domínguez B, Ferrari A, Ferreira P, Finocchiaro P, Furman V, Göbel K, Gómez-Hornillos M, García A, Gawlik A, Glodariu T, Gonçalves I, González E, Goverdovski A, Griesmayer E, Guerrero C, Gunsing F, Harada H, Heftrich T, Heinitz S, Heyse J, Jenkins D, Jericha E, Käppeler F, Kadi Y, Katabuchi T, Kavrigin P, Ketlerov V, Khryachkov V, Kimura A, Kivel N, Kokkoris M, Krtička M, Leal-Cidoncha E, Lederer C, Leeb H, Lerendegui-Marco J, Meo SL, Lonsdale S, Losito R, Macina D, Marganiec J, Martínez T, Massimi C, Mastinu P, Mastromarco M, Matteucci F, Maugeri E, Mendoza E, Mengoni A, Milazzo P, Mingrone F, Mirea M, Montesano S, Musumarra A, Nolte R, Oprea A, Patronis N, Pavlik A, Perkowski J, Porras J, Praena J, Quesada J, Rajeev K, Rauscher T, Reifarth R, Riego-Perez A, Robles M, Rout P, Rubbia C, Ryan J, Sabaté-Gilarte M, Saxena A, Schillebeeckx P, Schmidt S, Schumann D, Sedyshev P, Smith A, Stamatopoulos A, Tagliente G, Tain J, Tarifeño-Saldivia A, Tsinganis A, Valenta S, Vannini G, Variale V, Vaz P, Ventura A, Vlachoudis V, Vlastou R, Wallner A, Warren S, Weigand M, Weiss C, Wolf C, Woods P, Wright T, Žugec P. Characterization of the n_TOF EAR-2 neutron beam. EPJ WEB OF CONFERENCES 2017. [DOI: 10.1051/epjconf/201714603020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Dupont E, Otuka N, Cabellos O, Aberle O, Aerts G, Altstadt S, Alvarez H, Alvarez-Velarde F, Andriamonje S, Andrzejewski J, Audouin L, Bacak M, Badurek G, Balibrea J, Barbagallo M, Barros S, Baumann P, Bécares V, Bečvář F, Beinrucker C, Belloni F, Berthier B, Berthoumieux E, Billowes J, Boccone V, Bosnar D, Brown A, Brugger M, Caamaño M, Calviani M, Calviño F, Cano-Ott D, Capote R, Cardella R, Carrapiço C, Casanovas A, Castelluccio D, Cennini P, Cerutti F, Chen Y, Chiaveri E, Chin M, Colonna N, Cortés G, Cortés-Giraldo M, Cosentino L, Couture A, Cox J, Damone L, David S, Deo K, Diakaki M, Dillmann I, Domingo-Pardo C, Dressler R, Dridi W, Duran I, Eleftheriadis C, Embid-Segura M, Fernández-Domínguez B, Ferrant L, Ferrari A, Ferreira P, Finocchiaro P, Fraval K, Frost R, Fujii K, Furman W, Ganesan S, Garcia A, Gawlik A, Gheorghe I, Gilardoni S, Giubrone G, Glodariu T, Göbel K, Gomez-Hornillos M, Goncalves I, Gonzalez-Romero E, Goverdovski A, Gramegna F, Griesmayer E, Guerrero C, Gunsing F, Gurusamy P, Haight R, Harada H, Heftrich T, Heil M, Heinitz S, Hernández-Prieto A, Heyse J, Igashira M, Isaev S, Jenkins D, Jericha E, Kadi Y, Kaeppeler F, Kalamara A, Karadimos D, Karamanis D, Katabuchi T, Kavrigin P, Kerveno M, Ketlerov V, Khryachkov V, Kimura A, Kivel N, Kokkoris M, Konovalov V, Krtička M, Kroll J, Kurtulgil D, Lampoudis C, Langer C, Leal-Cidoncha E, Lederer C, Leeb H, Naour CL, Lerendegui-Marco J, Leong L, Licata M, Meo SL, Lonsdale S, Losito R, Lozano M, Macina D, Manousos A, Marganiec J, Martinez T, Marrone S, Masi A, Massimi C, Mastinu P, Mastromarco M, Matteucci F, Maugeri E, Mazzone A, Mendoza E, Mengoni A, Milazzo P, Mingrone F, Mirea M, Mondelaers W, Montesano S, Moreau C, Mosconi M, Musumarra A, Negret A, Nolte R, O’Brien S, Oprea A, Palomo-Pinto F, Pancin J, Paradela C, Patronis N, Pavlik A, Pavlopoulos P, Perkowski J, Perrot L, Pigni M, Plag R, Plompen A, Plukis L, Poch A, Porras I, Praena J, Pretel C, Quesada J, Radeck D, Rajeev K, Rauscher T, Reifarth R, Riego A, Robles M, Roman F, Rout P, Rudolf G, Rubbia C, Rullhusen P, Ryan J, Sabaté-Gilarte M, Salgado J, Santos C, Sarchiapone L, Sarmento R, Saxena A, Schillebeeckx P, Schmidt S, Schumann D, Sedyshev P, Smith A, Sosnin N, Stamatopoulos A, Stephan C, Suryanarayana S, Tagliente G, Tain J, Tarifeño-Saldivia A, Tarrío D, Tassan-Got L, Tavora L, Terlizzi R, Tsinganis A, Valenta S, Vannini G, Variale V, Vaz P, Ventura A, Versaci R, Vermeulen M, Villamarin D, Vicente M, Vlachoudis V, Vlastou R, Voss F, Wallner A, Walter S, Ware T, Warren S, Weigand M, Weiß C, Wolf C, Wiesher M, Wisshak K, Woods P, Wright T, Žugec P. Dissemination of data measured at the CERN n_TOF facility. EPJ WEB OF CONFERENCES 2017. [DOI: 10.1051/epjconf/201714607002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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115
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Mendoza E, Cano-Ott D, Altstadt S, Andriamonje S, Andrzejewski J, Audouin L, Balibrea J, Bécares V, Barbagallo M, Bečvář F, Belloni F, Berthier B, Berthoumieux E, Billowes J, Boccone V, Bosnar D, Brugger M, Calviño F, Calviani M, Carrapiço C, Cerutti F, Chiaveri E, Chin M, Colonna N, Cortés G, Cortés-Giraldo M, Diakaki M, Dillmann I, Domingo-Pardo C, Durán I, Dzysiuk N, Eleftheriadis C, Fernández-Ordóñez M, Ferrari A, Fraval K, Furman V, Gómez-Hornillos M, Ganesan S, García A, Giubrone G, Gonçalves I, González E, Goverdovski A, Gramegna F, Griesmayer E, Guerrero C, Gunsing F, Gurusamy P, Heftrich T, Heinitz S, Hernández-Prieto A, Heyse J, Jenkins D, Jericha E, Käppeler F, Kadi Y, Karadimos D, Katabuchi T, Ketlerov V, Khryachkov V, Koehler P, Kokkoris M, Kroll J, Krtička M, Lampoudis C, Langer C, Leal-Cidoncha E, Lederer C, Leeb H, Leong L, Lerendegui-Marco J, Licata M, Losito R, Manousos A, Marganiec J, Martínez T, Massimi C, Mastinu P, Mastromarco M, Mengoni A, Milazzo P, Mingrone F, Mirea M, Mondelaers W, Paradela C, Pavlik A, Perkowski J, Plompen A, Praena J, Quesada J, Rauscher T, Reifarth R, Riego-Perez A, Robles M, Roman F, Rubbia C, Ryan J, Sabaté-Gilarte M, Sarmento R, Saxena A, Schillebeeckx P, Schmidt S, Schumann D, Sedyshev P, Tagliente G, Tain J, Tarifeño-Saldivia A, Tarrío D, Tassan-Got L, Tsinganis A, Valenta S, Vannini G, Variale V, Vaz P, Ventura A, Vermeulen M, Versaci R, Vlachoudis V, Vlastou R, Wallner A, Ware T, Weigand M, Weiss C, Wright T, Žugec P. Measurement of the 241Am neutron capture cross section at the n_TOF facility at CERN. EPJ WEB OF CONFERENCES 2017. [DOI: 10.1051/epjconf/201714611022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Lerendegui-Marco J, Guerrero C, Cortés-Giraldo M, Quesada J, Mendoza E, Cano-Ott D, Eberhardt K, Junghans A, Aberle O, Andrzejewski J, Audouin L, Bacak M, Balibrea J, Barbagallo M, Bečvář F, Berthoumieux E, Billowes J, Bosnar D, Brown A, Caamaño M, Calviño F, Calviani M, Cardella R, Casanovas A, Cerutti F, Chen Y, Chiaveri E, Colonna N, Cortés G, Cosentino L, Damone L, Diakaki M, Domingo-Pardo C, Dressler R, Dupont E, Durán I, Fernández-Domínguez B, Ferrari A, Ferreira P, Finocchiaro P, Göbel K, Gómez-Hornillos M, García A, Gawlik A, Gilardoni S, Glodariu T, Gonçalves I, González E, Griesmayer E, Gunsing F, Harada H, Heinitz S, Heyse J, Jenkins D, Jericha E, Käppeler F, Kadi Y, Kalamara A, Kavrigin P, Kimura A, Kivel N, Kokkoris M, Krtička M, Kurtulgil D, Leal-Cidoncha E, Lederer C, Leeb H, Meo SL, Lonsdale S, Macina D, Marganiec J, Martínez T, Masi A, Massimi C, Mastinu P, Mastromarco M, Maugeri E, Mazzone A, Mengoni A, Milazzo P, Mingrone F, Musumarra A, Negret A, Nolte R, Oprea A, Patronis N, Pavlik A, Perkowski J, Porras I, Praena J, Radeck D, Rauscher T, Reifarth R, Rout P, Rubbia C, Ryan J, Sabaté-Gilarte M, Saxena A, Schillebeeckx P, Schumann D, Smith A, Sosnin N, Stamatopoulos A, Tagliente G, Tain J, Tarifeño-Saldivia A, Tassan-Got L, Valenta S, Vannini G, Variale V, Vaz P, Ventura A, Vlachoudis V, Vlastou R, Wallner A, Warren S, Woods P, Wright T, Žugec P. New measurement of the 242Pu(n,γ) cross section at n_TOF-EAR1 for MOX fuels: Preliminary results in the RRR. EPJ WEB OF CONFERENCES 2017. [DOI: 10.1051/epjconf/201714611045] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Rai AK, Singh A, Saxena A, Seth T, Raina V, Mitra DK. Exonal switch down-regulates the expression of CD5 on blasts of acute T cell leukaemia. Clin Exp Immunol 2017; 190:340-350. [PMID: 28752543 DOI: 10.1111/cei.13019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/23/2017] [Indexed: 11/27/2022] Open
Abstract
To date, CD5 expression and its role in acute T cell lymphoblastic leukaemia (T-ALL) have not been studied closely. We observed a significant reduction in surface expression of CD5 (sCD5) on leukaemic T cells compared to autologous non-leukaemic T cells. In this study, we have shown the molecular mechanism regulating the expression and function of CD5 on leukaemic T cells. A total of 250 patients suffering from leukaemia and lymphoma were immunophenotyped. Final diagnosis was based on their clinical presentation, morphological data and flow cytometry-based immunophenotyping. Thirty-nine patients were found to be of ALL-T origin. Amplification of early region of E1A and E1B transcripts of CD5 was correlated with the levels of surface and intracellular expression of CD5 protein. Functional studies were performed to show the effect of CD5 blocking on interleukin IL-2 production and survival of leukaemic and non-leukaemic cells. Lack of expression of sCD5 on T-ALL blasts was correlated closely with predominant transcription of exon E1B and significant loss of exon E1A of the CD5 gene, which is associated with surface expression of CD5 on lymphocytes. High expression of E1B also correlates with increased expression of cytoplasmic CD5 (cCD5) among leukaemic T cells. Interestingly, we observed a significant increase in the production of IL-2 by non-leukaemic T cells upon CD5 blocking, leading possibly to their increased survival at 48 h. Our study provides understanding of the regulation of CD5 expression on leukaemic T cells, and may help in understanding the molecular mechanism of CD5 down-regulation.
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Saxena A, Shastri L, Sunagar V. Green approach for the synthesis of 4-coumarin-4H-pyrans from 4-formylcoumarins and their antibacterial study. SYNTHETIC COMMUN 2017. [DOI: 10.1080/00397911.2017.1336557] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Saxena A, Lopes F, Poon KKH, McKay DM. Absence of the NOD2 protein renders epithelia more susceptible to barrier dysfunction due to mitochondrial dysfunction. Am J Physiol Gastrointest Liver Physiol 2017; 313:G26-G38. [PMID: 28450277 DOI: 10.1152/ajpgi.00070.2017] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Revised: 04/07/2017] [Accepted: 04/18/2017] [Indexed: 01/31/2023]
Abstract
Irregular mitochondria structure and reduced ATP in some patients with IBD suggest that metabolic stress contributes to disease. Loss-of-function mutation in the nucleotide-binding oligomerization domain (NOD)-2 gene is a major susceptibility trait for IBD. Hence, we assessed if loss of NOD2 further impairs the epithelial barrier function instigated by disruption of mitochondrial ATP synthesis via the hydrogen ionophore dinitrophenol (DNP). NOD2 protein (virtually undetectable in epithelia under basal conditions) was increased in T84 (human colon cell line) cells treated with noninvasive Escherichia coli + DNP (16 h). Increased intracellular bacteria in wild-type (WT) and NOD2 knockdown (KD) cells and colonoids from NOD2-/- mice were mediated by reactive oxygen species (ROS) and the MAPK ERK1/2 pathways as determined by cotreatment with the antioxidant mitoTEMPO and the ERK inhibitor U0126: ROS was upstream of ERK1/2 activation. Despite increased E. coli in DNP-treated NOD2 KD compared with WT cells, there were no differences in the internalization of fluorescent inert beads or dead E. coli particles. This suggests that lack of killing in the NOD2 KD cells was responsible for the increased numbers of viable intracellular bacteria; a conclusion supported by evidence of reduced autophagy in NOD2 KD T84 epithelia. Thus, in a two-hit hypothesis, decreased barrier function due to dysfunctional mitochondrial is amplified by lack of NOD2 in transporting enterocytes: subsequently, greater numbers of bacteria entering the mucosa would be a significant inflammatory threat especially since individuals with NOD2 mutations have compromised macrophage and Paneth cell responses to bacteria.NEW & NOTEWORTHY Increased internalization of bacteria by epithelia with dysfunctional mitochondria (reduced ATP) is potentiated if the cells lack nucleotide-binding oligomerization domain 2 (NOD2), mutations in which are inflammatory bowel disease-susceptibility traits. Uptake of bacteria was dependent on reactive oxygen species and MAP-kinase activity, and the increased viable intracellular bacteria in NOD2-/- cells likely reflect a reduced ability to recognize and kill bacteria. Thus a significant barrier defect occurs with NOD2 deficiency in conjunction with metabolic stress that could contribute to inflammation.
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Pal V, Saxena A, Singh S, Goel AK, Kumar JS, Parida MM, Rai GP. Development of a real-time loop-mediated isothermal amplification assay for detection of Burkholderia mallei. Transbound Emerg Dis 2017. [PMID: 28649808 DOI: 10.1111/tbed.12665] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Burkholderia mallei is the aetiological agent of glanders, a highly contagious and re-emerging zoonotic disease. Early diagnosis of glanders is critically important to ensure timely treatment with appropriate antibiotics in humans, and to prevent spread of infection in animals. Molecular detection of B. mallei has always been troublesome because of its genetic similarity with Burkholderia pseudomallei, the causative agent of melioidosis. In present investigation, a set of six B. mallei-specific primers were designed and a simple, rapid, specific and sensitive real-time loop-mediated isothermal amplification (LAMP) assay was developed for detection of B. mallei. The LAMP assay could detect as low as 1 pg of B. mallei genomic DNA and 5.5 × 103 CFU/ml of B. mallei in spiked human blood. The assay was highly specific for B. mallei as it did not cross-react with other bacterial strains used in the study. The established LAMP assay is field adaptable and can be a better and viable alternative to PCR-based techniques for detection of B. mallei in glanders endemic areas with resource-limited settings.
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Mir R, Bhat MA, Javaid J, Shah N, Kumar P, Sharma E, Jhu C, Basak S, Amle D, Ray PC, Saxena A, Banu S. Glutathione S-transferase M1 and T1 (rs4025935 and rs71748309) null genotypes are associated with increased susceptibility to coronary artery disease in Indian populations. Acta Cardiol 2017. [DOI: 10.1080/ac.71.6.3178186] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Bhike M, Roy BJ, Saxena A, Choudhury RK, Ganesan S. Measurement of232Th(n,σ)233Th,98Mo(n,σ)99Mo,186W(n,σ)187W,115In(n,σ116m1In, and92Mo(n,p92mNb Cross Sections in the Energy Range of 1.6 to 3.7 MeV. NUCL SCI ENG 2017. [DOI: 10.13182/nse10-63] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Bhike M, Saxena A, Roy BJ, Choudhury RK, Kailas S, Ganesan S. Measurement of67Zn(n,p)67Cu,92Mo(n,p)92mNb, and98Mo(n,γ)99Mo Reaction Cross Sections at Incident Neutron Energies ofEn= 1.6 and 3.7 MeV. NUCL SCI ENG 2017. [DOI: 10.13182/nse163-175] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Mir R, Bhat MA, Javaid J, Shah N, Kumar P, Sharma E, Jhu C, Basak S, Amle D, Ray PC, Saxena A, Banu S. Glutathione S-transferase M1 and T1 (rs4025935 and rs71748309) null genotypes are associated with increased susceptibility to coronary artery disease in Indian populations. Acta Cardiol 2017; 71:678-684. [PMID: 27920455 DOI: 10.2143/ac.71.6.3178186] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Pandey B, Prajapati PM, Jakhar S, Rao CVS, Basu TK, Nayak BK, Saxena A, Suryanarayana SV. Estimate of (n,p) Cross Section for Radionuclide 55Fe Using EMPIRE and TALYS. NUCL SCI ENG 2017. [DOI: 10.13182/nse14-26] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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