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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    European journal of clinical pharmacology 43 (1992), S. 47-50 
    ISSN: 1432-1041
    Keywords: Glucocorticoids ; Glucose metabolism ; deflazacort ; betamethasone ; insulin resistance
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary We have compared the long-term effects of different corticosteroids on glucose metabolism by carring out a 75 g oral glucose tolerance test in 27 subjects before and after the administration of deflazacort or betamethasone for two months in random balanced sequence. Fasting plasma glucose and insulin concentrations were significantly higher after betamethasone, whereas deflazacort increased only fasting plasma insulin. After oral glucose there were significant increases in blood glucose and insulin after betamethasone compared with deflazacort. These results suggest that the degree of glucose intolerance and insulin resistance depends on the steroid used and on the dose given, although long-term treatment with deflazacort has a smaller effect on glucose metabolism than betamethasone.
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  • 2
    ISSN: 1432-1041
    Keywords: deflazacort ; prednisone ; 3H-glucose infusion ; glucose metabolism ; insulin kinetics ; euglycaemic clamp ; glucose kinetics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary Corticosteroid treatment produces glucose intolerance with insulin resistance. Recent reports have indicated that deflazacort (DF) is significantly less diabetogenic than prednisone (PN). A euglycaemic hyperinsulinaemic (100 µU/ml) glucose clamp (EHGC) and 3H-glucose infusion for 240 min were performed in 6 healthy volunteers (HV) after administration of 15 mg PN or 18 mg DF, 12 h and 2 h before test. The glucose metabolic clearance rate (MCR) was significantly (p=0.02) higher after DF (4.75±0.58 ml/min·kg) than after PN (3.31±0.27 ml/min·kg). Basal hepatic glucose production (HGP) was significantly (p=0.003) lower after DF (3.58±0.33 mg/kg·min) than after PN (4.44±0.23 mg/kg·min). A similar pattern was obtained for glucose volume (GV) and glucose pool (GP). The kinetic parameters of insulin were not significantly different after the two drugs. After 7 day of PN 30 mg/day or DF 36 mg/day, EHGC and 3H-glucose infusion for 240 min were performed in 10 HV. Glucose MCR values were significantly (p=0.03) higher after DF (5.03±0.91 ml/min·kg) than after PN (2.80±0.26 ml/min·kg). HGP values did not different significantly after the two drugs. GV (p=0.001) and GP (p=0.002) were significantly lower after DF than after PN. Insulin kinetics were not significantly different after the two drugs. It is concluded that on acute and 7-day administration to healthy subjects DF, in an anti-inflammatory dose equivalent to PN, shows significantly less influence on glucose metabolism.
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    European journal of clinical pharmacology 22 (1982), S. 469-471 
    ISSN: 1432-1041
    Keywords: prediabetes ; prednisone ; deflazacort ; oral GTT ; plasma glucose ; insulin ; non-esterified fatty acids ; cholesterol ; HDL-cholesterol ; triglycerides
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary The diabetogenic effect of deflazacort (DF), an oxazolinic synthetic corticosteroid, was studied in 12 healthy adult subjects with a positive family history of diabetes mellitus. Three oral glucose tests (oGTT) were performed at 9.00 a. m., after a 12 h fast, following randomized administration of Placebo (PL), or Deflazacort (DF 36+36 mg) or Prednisone (PN 30+30 mg) 12 and 2 h before the test. Plasma glucose (BG), insulin (IRI), non-esterified fatty acids (NEFA), total cholesterol (CL), HDL-cholesterol (HDL-CL) and triglycerides (TG) were measured at time 0, and BG, IRI, NEFA were again measured 30, 60, 90 and 120 min after oGTT. PN was followed by a significant increase in BG over the PL values in accordance with the prediabetic state of these subjects, and there was also an increase in IRI values. No change in CL, HDL-CL and TG was found. After DF administration, there was a small increase only in BG and IRI over PL values. The differences between DF-PL were not significant, but those between PL-PN and DF-PN were significant at p〈0.05 (Scheffe's test). The lesser metabolic effect of DF on glucose balance by comparison with PN, as shown by these results, is consistent with previous reports of its lower osteopaenic effect. Thus, DF may be more suitable than PN and similar corticosteroids for corticosteroid therapy in prediabetic and diabetic subjects.
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  • 4
    Publication Date: 2012-02-23
    Description: Author(s): Maria Archidiacono, Francesco De Bernardis, Asantha Cooray, Alessandro Melchiorri, Alexandre Amblard, Luca Pagano, and Paolo Serra While the arcminute-scale cosmic microwave background (CMB) anisotropies are due to secondary effects, point sources dominate the total anisotropy power spectrum. At high frequencies the point sources are primarily in the form of dusty, star-forming galaxies. Both Herschel and Planck have recently m... [Phys. Rev. D 85, 043015] Published Wed Feb 22, 2012
    Keywords: Astrophysics & Cosmology
    Print ISSN: 0556-2821
    Electronic ISSN: 1089-4918
    Topics: Physics
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  • 5
    Publication Date: 2011-06-03
    Description: Author(s): Erminia Calabrese, Dragan Huterer, Eric V. Linder, Alessandro Melchiorri, and Luca Pagano Recent cosmological data analyses hint at the presence of an extra relativistic energy component in the early universe. This component is often parametrized as an excess of the effective neutrino number N eff over the standard value of 3.046. The excess relativistic energy could be an indication for ... [Phys. Rev. D 83, 123504] Published Thu Jun 02, 2011
    Keywords: Astrophysics & Cosmology
    Print ISSN: 0556-2821
    Electronic ISSN: 1089-4918
    Topics: Physics
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  • 6
    Publication Date: 2007-04-28
    Description: By screening N-ethyl-N-nitrosourea-mutagenized animals for alterations in rhythms of wheel-running activity, we identified a mouse mutation, after hours (Afh). The mutation, a Cys(358)Ser substitution in Fbxl3, an F-box protein with leucine-rich repeats, results in long free-running rhythms of about 27 hours in homozygotes. Circadian transcriptional and translational oscillations are attenuated in Afh mice. The Afh allele significantly affected Per2 expression and delayed the rate of Cry protein degradation in Per2::Luciferase tissue slices. Our in vivo and in vitro studies reveal a central role for Fbxl3 in mammalian circadian timekeeping.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Godinho, Sofia I H -- Maywood, Elizabeth S -- Shaw, Linda -- Tucci, Valter -- Barnard, Alun R -- Busino, Luca -- Pagano, Michele -- Kendall, Rachel -- Quwailid, Mohamed M -- Romero, M Rosario -- O'neill, John -- Chesham, Johanna E -- Brooker, Debra -- Lalanne, Zuzanna -- Hastings, Michael H -- Nolan, Patrick M -- MC_U105170643/Medical Research Council/United Kingdom -- MC_U142684172/Medical Research Council/United Kingdom -- MC_U142684173/Medical Research Council/United Kingdom -- MC_U142684175/Medical Research Council/United Kingdom -- New York, N.Y. -- Science. 2007 May 11;316(5826):897-900. Epub 2007 Apr 26.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Medical Research Council (MRC) Mammalian Genetics Unit, Harwell, Oxfordshire OX11 0RD, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17463252" target="_blank"〉PubMed〈/a〉
    Keywords: ARNTL Transcription Factors ; Amino Acid Sequence ; Amino Acid Substitution ; Animals ; Basic Helix-Loop-Helix Transcription Factors/genetics/metabolism ; CLOCK Proteins ; COS Cells ; Cell Cycle Proteins/genetics/metabolism ; Cercopithecus aethiops ; *Circadian Rhythm/genetics ; Crosses, Genetic ; Cryptochromes ; F-Box Proteins/*genetics/*physiology ; Female ; Flavoproteins/genetics/metabolism ; Gene Expression Regulation ; Liver/metabolism ; Lung/metabolism ; Male ; Mice ; Mice, Inbred BALB C ; Mice, Inbred C3H ; Molecular Sequence Data ; Nuclear Proteins/genetics/metabolism ; Period Circadian Proteins ; *Point Mutation ; Suprachiasmatic Nucleus/metabolism ; Trans-Activators/genetics/metabolism ; Transcription Factors/genetics/metabolism ; Transcription, Genetic
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 7
    Publication Date: 2007-04-28
    Description: One component of the circadian clock in mammals is the Clock-Bmal1 heterodimeric transcription factor. Among its downstream targets, two genes, Cry1 and Cry2, encode inhibitors of the Clock-Bmal1 complex that establish a negative-feedback loop. We found that both Cry1 and Cry2 proteins are ubiquitinated and degraded via the SCF(Fbxl3) ubiquitin ligase complex. This regulation by SCF(Fbxl3) is a prerequisite for the efficient and timely reactivation of Clock-Bmal1 and the consequent expression of Per1 and Per2, two regulators of the circadian clock that display tumor suppressor activity. Silencing of Fbxl3 produced no effect in Cry1-/-;Cry2-/- cells, which shows that Fbxl3 controls clock oscillations by mediating the degradation of CRY proteins.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Busino, Luca -- Bassermann, Florian -- Maiolica, Alessio -- Lee, Choogon -- Nolan, Patrick M -- Godinho, Sofia I H -- Draetta, Giulio F -- Pagano, Michele -- MC_U142684172/Medical Research Council/United Kingdom -- MC_U142684173/Medical Research Council/United Kingdom -- MC_U142684175/Medical Research Council/United Kingdom -- R01-GM57587/GM/NIGMS NIH HHS/ -- R21-CA125173/CA/NCI NIH HHS/ -- R37-CA76584/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 2007 May 11;316(5826):900-4. Epub 2007 Apr 26.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pathology, NYU Cancer Institute, New York University School of Medicine, 550 First Avenue, MSB 599, New York, NY 10016, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17463251" target="_blank"〉PubMed〈/a〉
    Keywords: ARNTL Transcription Factors ; Animals ; Basic Helix-Loop-Helix Transcription Factors/metabolism ; CLOCK Proteins ; Cell Cycle Proteins/genetics/metabolism ; Cells, Cultured ; *Circadian Rhythm/genetics ; Cryptochromes ; F-Box Proteins/genetics/*metabolism ; Flavoproteins/genetics/*metabolism ; HeLa Cells ; Humans ; Mice ; NIH 3T3 Cells ; Nuclear Proteins/genetics/metabolism ; Period Circadian Proteins ; Promoter Regions, Genetic ; RNA Interference ; SKP Cullin F-Box Protein Ligases/*metabolism ; Trans-Activators/metabolism ; Transcription Factors/genetics/metabolism ; Transfection ; Ubiquitin/metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 8
    Publication Date: 2013-03-19
    Description: The cryptochrome (CRY) flavoproteins act as blue-light receptors in plants and insects, but perform light-independent functions at the core of the mammalian circadian clock. To drive clock oscillations, mammalian CRYs associate with the Period proteins (PERs) and together inhibit the transcription of their own genes. The SCF(FBXL3) ubiquitin ligase complex controls this negative feedback loop by promoting CRY ubiquitination and degradation. However, the molecular mechanisms of their interactions and the functional role of flavin adenine dinucleotide (FAD) binding in CRYs remain poorly understood. Here we report crystal structures of mammalian CRY2 in its apo, FAD-bound and FBXL3-SKP1-complexed forms. Distinct from other cryptochromes of known structures, mammalian CRY2 binds FAD dynamically with an open cofactor pocket. Notably, the F-box protein FBXL3 captures CRY2 by simultaneously occupying its FAD-binding pocket with a conserved carboxy-terminal tail and burying its PER-binding interface. This novel F-box-protein-substrate bipartite interaction is susceptible to disruption by both FAD and PERs, suggesting a new avenue for pharmacological targeting of the complex and a multifaceted regulatory mechanism of CRY ubiquitination.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3618506/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3618506/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Xing, Weiman -- Busino, Luca -- Hinds, Thomas R -- Marionni, Samuel T -- Saifee, Nabiha H -- Bush, Matthew F -- Pagano, Michele -- Zheng, Ning -- 5T32-HL007151/HL/NHLBI NIH HHS/ -- K99 CA166181/CA/NCI NIH HHS/ -- R01 GM057587/GM/NIGMS NIH HHS/ -- R01-CA107134/CA/NCI NIH HHS/ -- R01-GM057587/GM/NIGMS NIH HHS/ -- R21-CA161108/CA/NCI NIH HHS/ -- R37 CA076584/CA/NCI NIH HHS/ -- R37-CA-076584/CA/NCI NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2013 Apr 4;496(7443):64-8. doi: 10.1038/nature11964. Epub 2013 Mar 17.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pharmacology, University of Washington, Seattle, Washington 98195, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23503662" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Apoproteins/chemistry/metabolism ; Binding Sites ; Cryptochromes/chemistry/*metabolism ; Crystallography, X-Ray ; Deoxyribodipyrimidine Photo-Lyase/chemistry ; Drosophila melanogaster/chemistry ; F-Box Proteins/chemistry/*metabolism ; Flavin-Adenine Dinucleotide/metabolism ; Humans ; Hydrophobic and Hydrophilic Interactions ; Mice ; Models, Molecular ; Protein Structure, Tertiary ; S-Phase Kinase-Associated Proteins/chemistry/metabolism ; SKP Cullin F-Box Protein Ligases/chemistry/*metabolism ; Substrate Specificity
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 9
    Publication Date: 2011-11-25
    Description: BCL6 is the product of a proto-oncogene implicated in the pathogenesis of human B-cell lymphomas. By binding specific DNA sequences, BCL6 controls the transcription of a variety of genes involved in B-cell development, differentiation and activation. BCL6 is overexpressed in the majority of patients with aggressive diffuse large B-cell lymphoma (DLBCL), the most common lymphoma in adulthood, and transgenic mice constitutively expressing BCL6 in B cells develop DLBCLs similar to the human disease. In many DLBCL patients, BCL6 overexpression is achieved through translocation (~40%) or hypermutation of its promoter (~15%). However, many other DLBCLs overexpress BCL6 through an unknown mechanism. Here we show that BCL6 is targeted for ubiquitylation and proteasomal degradation by a SKP1-CUL1-F-box protein (SCF) ubiquitin ligase complex that contains the orphan F-box protein FBXO11 (refs 5, 6). The gene encoding FBXO11 was found to be deleted or mutated in multiple DLBCL cell lines, and this inactivation of FBXO11 correlated with increased levels and stability of BCL6. Similarly, FBXO11 was either deleted or mutated in primary DLBCLs. Notably, tumour-derived FBXO11 mutants displayed an impaired ability to induce BCL6 degradation. Reconstitution of FBXO11 expression in FBXO11-deleted DLBCL cells promoted BCL6 ubiquitylation and degradation, inhibited cell proliferation, and induced cell death. FBXO11-deleted DLBCL cells generated tumours in immunodeficient mice, and the tumorigenicity was suppressed by FBXO11 reconstitution. We reveal a molecular mechanism controlling BCL6 stability and propose that mutations and deletions in FBXO11 contribute to lymphomagenesis through BCL6 stabilization. The deletions/mutations found in DLBCLs are largely monoallelic, indicating that FBXO11 is a haplo-insufficient tumour suppressor gene.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3344385/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3344385/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Duan, Shanshan -- Cermak, Lukas -- Pagan, Julia K -- Rossi, Mario -- Martinengo, Cinzia -- di Celle, Paola Francia -- Chapuy, Bjoern -- Shipp, Margaret -- Chiarle, Roberto -- Pagano, Michele -- 242965/European Research Council/International -- P01-CA092625/CA/NCI NIH HHS/ -- R01 GM057587/GM/NIGMS NIH HHS/ -- R01 GM057587-13/GM/NIGMS NIH HHS/ -- R01 GM057587-14/GM/NIGMS NIH HHS/ -- R01-GM57587/GM/NIGMS NIH HHS/ -- R21 CA161108/CA/NCI NIH HHS/ -- R21 CA161108-01/CA/NCI NIH HHS/ -- R21-CA161108/CA/NCI NIH HHS/ -- R37 CA076584/CA/NCI NIH HHS/ -- R37 CA076584-14/CA/NCI NIH HHS/ -- R37 CA076584-15/CA/NCI NIH HHS/ -- R37-CA76584/CA/NCI NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2012 Jan 5;481(7379):90-3. doi: 10.1038/nature10688.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pathology, NYU Cancer Institute, New York University School of Medicine, New York, New York 10016, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22113614" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Animals ; Apoptosis ; Cell Line, Tumor ; Cell Proliferation ; DNA-Binding Proteins/genetics/*metabolism ; F-Box Proteins/*genetics/*metabolism ; Gene Deletion ; Genes, Tumor Suppressor ; HEK293 Cells ; Humans ; Lymphoma, Large B-Cell, Diffuse/enzymology/*genetics/*metabolism/pathology ; Mice ; Mutation/*genetics ; Neoplasm Transplantation ; Proteasome Endopeptidase Complex/metabolism ; Protein Stability ; Protein-Arginine N-Methyltransferases/deficiency/*genetics/*metabolism ; *Proteolysis ; SKP Cullin F-Box Protein Ligases/metabolism ; Ubiquitination
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 10
    Publication Date: 1995-08-04
    Description: The p27 mammalian cell cycle protein is an inhibitor of cyclin-dependent kinases. Both in vivo and in vitro, p27 was found to be degraded by the ubiquitin-proteasome pathway. The human ubiquitin-conjugating enzymes Ubc2 and Ubc3 were specifically involved in the ubiquitination of p27. Compared with proliferating cells, quiescent cells exhibited a smaller amount of p27 ubiquitinating activity, which accounted for the marked increase of p27 half-life measured in these cells. Thus, the abundance of p27 in cells is regulated by degradation. The specific proteolysis of p27 may represent a mechanism for regulating the activity of cyclin-dependent kinases.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pagano, M -- Tam, S W -- Theodoras, A M -- Beer-Romero, P -- Del Sal, G -- Chau, V -- Yew, P R -- Draetta, G F -- Rolfe, M -- New York, N.Y. -- Science. 1995 Aug 4;269(5224):682-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Mitotix Inc., Cambridge, MA 02139, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7624798" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Triphosphate/metabolism ; Anaphase-Promoting Complex-Cyclosome ; Animals ; *Cell Cycle Proteins ; Cell Line ; Cyclin-Dependent Kinase Inhibitor p27 ; Cyclin-Dependent Kinases/*antagonists & inhibitors ; Cysteine Endopeptidases/*metabolism ; Electroporation ; Enzyme Inhibitors/metabolism ; Humans ; Kinetics ; Leupeptins/pharmacology ; Ligases/metabolism ; Mice ; Microtubule-Associated Proteins/*metabolism ; Multienzyme Complexes/*metabolism ; Proteasome Endopeptidase Complex ; Rabbits ; Recombinant Proteins/metabolism ; Succinates/pharmacology ; Tumor Cells, Cultured ; *Tumor Suppressor Proteins ; Ubiquitin-Conjugating Enzymes ; *Ubiquitin-Protein Ligase Complexes ; Ubiquitin-Protein Ligases ; Ubiquitins/*metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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