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Orio M, Bindra JK, van Tol J, Giorgi M, Dalal NS, Bertaina S. Quantum dynamics of Mn 2+ in dimethylammonium magnesium formate. J Chem Phys 2021; 154:154201. [PMID: 33887944 DOI: 10.1063/5.0046984] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Dimethylammonium magnesium formate, [(CH3)2NH2][Mg(HCOO)3] or DMAMgF, is a model used to study high temperature hybrid perovskite-like dielectrics. This compound displays an order-disorder phase transition at about 260 K. Using multifrequency electron spin resonance in continuous wave and pulsed modes, we herein present the quantum dynamics of the Mn2+ ion probe in DMAMgF. In the high temperature paraelectric phase, we observe a large distribution of the zero field splitting that is attributed to the high local disorder and further supported by density functional theory computations. In the low temperature ferroelastic phase, a single structure phase is detected and shown to contain two magnetic structures. The complex electron paramagnetic resonance signals were identified by means of the Rabi oscillation method combined with the crystal field kernel density estimation.
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Affiliation(s)
- M Orio
- CNRS, Aix-Marseille Université, Centrale Marseille, iSm2, Institut des Sciences Moléculaires de Marseille, Marseille, France
| | - J K Bindra
- Department of Chemistry, Florida State University, Tallahassee, Florida 32310, USA
| | - J van Tol
- The National High Magnetic Field Laboratory, Tallahassee, Florida 32310, USA
| | - M Giorgi
- Aix Marseille Université, CNRS, Centrale Marseille, FSCM, Spectropole, Marseille, France
| | - N S Dalal
- Department of Chemistry, Florida State University, Tallahassee, Florida 32310, USA
| | - S Bertaina
- CNRS, Aix-Marseille Université, IM2NP (UMR 7334), Institut Matériaux Microélectronique et Nanosciences de Provence, Marseille, France
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Orio F, Tafuri D, Ascione A, Marciano F, Savastano S, Colarieti G, Orio M, Colao A, Palomba S, Muscogiuri G. Lifestyle changes in the management of adulthood and childhood obesity. MINERVA ENDOCRINOL 2016; 41:509-515. [PMID: 27600645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Adulthood and childhood obesity is rapidly becoming an epidemic problem and it has a short and long-term impact on health. Short-term consequences are mostly represented by psychological effects; in fact obese children have more chances to develop psychological or psychiatric problems than non-obese children. The main long-term effect is represented by the fact that childhood obesity continues into adulthood obesity and this results in negative effects in young adult life, since obesity increases the risk to develop morbidity and premature mortality. The obesity-related diseases are mostly represented by hypertension, type 2 diabetes, dyslipidemia, cardiovascular diseases. Medical treatment should be discouraged in childhood because of the side effects and it should be only reserved for obese children with related medical complications. Lifestyle changes should be encouraged in both adulthood and childhood obesity. This review focuses on the management of obesity both in adulthood and in childhood, paying particular attention to lifestyle changes that should be recommended.
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Affiliation(s)
- Francesco Orio
- Department of Sport Sciences and Wellness, Parthenope University, Naples, Italy -
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Sánchez-Eguía BN, Flores-Alamo M, Orio M, Castillo I. Side-on cupric–superoxo triplet complexes as competent agents for H-abstraction relevant to the active site of PHM. Chem Commun (Camb) 2015; 51:11134-7. [DOI: 10.1039/c5cc02332g] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Side-on cupric–superoxo complexes with triplet ground states mimic the active site of PHM and are capable of H-abstraction.
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Affiliation(s)
| | - M. Flores-Alamo
- Facultad de Química
- División de Estudios de Posgrado
- Universidad Nacional Autónoma de México
- México DF
- Mexico
| | - M. Orio
- Laboratoire de Spectrochimie Infrarouge et Raman
- Université des Sciences et Technologies de Lille
- 59655 Villeneuve d'Ascq Cedex
- France
- Institut des Sciences Moléculaires de Marseille
| | - I. Castillo
- Instituto de Química
- Universidad Nacional Autónoma de México
- México DF
- Mexico
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Orio F, Tafuri D, Ascione A, Marciano F, Savastano S, Colarieti G, Orio M, Colao A, Palomba S, Muscogiuri G. Lifestyle changes in the management of adulthood and childhood obesity. MINERVA ENDOCRINOL 2014:R07Y9999N00A140033. [PMID: 25517402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Adulthood and childhood obesity is rapidly becoming an epidemic problem and it has a short and long term impact on health. Short term consequences are mostly represented by psychological effects, in fact obese children have more chances to develop psychological or psychiatric problems than non--obese children. The main long term effect is represented by the fact that childhood obesity continues into adulthood obesity and this results in negative effects in young adult life, since obesity increases the risk to develop morbidity and premature mortality. The obesity--related diseases are mostly represented by hypertension, type 2 diabetes, dyslipidaemia, cardiovascular diseases. Medical treatment should be discouraged in childhood because of the side effects and it should be only reserved for obese children with related medical complications. Lifestyle changes should be encouraged in both adulthood and childhood obesity. This review focuses on the management of obesity both in adulthood and in childhood, paying particular attention to lifestyle changes that should be recommended.
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Affiliation(s)
- F Orio
- Endocrinology, Department of Sport Sciences and Wellness, University "Parthenope" Naples, Italy -
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Palomba S, Falbo A, Russo T, Rivoli L, Orio M, Cosco AG, Vero R, Capula C, Tolino A, Zullo F, Colao A, Orio F. The risk of a persistent glucose metabolism impairment after gestational diabetes mellitus is increased in patients with polycystic ovary syndrome. Diabetes Care 2012; 35:861-7. [PMID: 22338097 PMCID: PMC3308296 DOI: 10.2337/dc11-1971] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/11/2011] [Accepted: 12/20/2011] [Indexed: 02/03/2023]
Abstract
OBJECTIVE To test the hypothesis that the risk of persistent glucose impairment after gestational diabetes mellitus (GDM) is increased in patients with polycystic ovary syndrome (PCOS). RESEARCH DESIGN AND METHODS The prospective case-control study included 42 pregnant patients with PCOS and GDM and 84 pregnant control patients with GDM but without clinical and biochemical hyperandrogenism, polycystic ovaries, and oligo-anovulation. The case and control subjects were matched one to two for age and BMI. The glycemic profiles were studied in all subjects 6 weeks, 12 weeks, and 18 months after delivery. The incidence and the relative risk (RR) were calculated for overall persistence of an abnormal glycemic pattern and for each specific alteration, i.e., impaired glucose tolerance (IGT), impaired fasting glucose (IFG), and diabetes mellitus (DM). RESULTS At 18 months after delivery, the incidences of IFG, IGT, and IFG-IGT were significantly (P < 0.05) higher in the cases than in the controls. At the 18-month follow-up, the RR for the composite outcome of glucose metabolism impairment in PCOS women was 3.45 (95% CI 1.82-6.58). CONCLUSIONS Patients with PCOS are at increased risk for a persistent impaired glucose metabolism after GDM.
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Affiliation(s)
- Stefano Palomba
- Department of Obstetrics and Gynecology, Magna Graecia University of Catanzaro, Catanzaro, Italy.
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Anrather J, Gallo EF, Kawano T, Orio M, Abe T, Gooden C, Zhou P, Iadecola C. Purinergic signaling induces cyclooxygenase-1-dependent prostanoid synthesis in microglia: roles in the outcome of excitotoxic brain injury. PLoS One 2011; 6:e25916. [PMID: 22022466 PMCID: PMC3195085 DOI: 10.1371/journal.pone.0025916] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2011] [Accepted: 09/13/2011] [Indexed: 11/19/2022] Open
Abstract
Cyclooxygenases (COX) are prostanoid synthesizing enzymes constitutively expressed in the brain that contribute to excitotoxic neuronal cell death. While the neurotoxic role of COX-2 is well established and has been linked to prostaglandin E(2) synthesis, the role of COX-1 is not clearly understood. In a model of N-Methyl-D-aspartic acid (NMDA) induced excitotoxicity in the mouse cerebral cortex we found a distinctive temporal profile of COX-1 and COX-2 activation where COX-1, located in microglia, is responsible for the early phase of prostaglandin E(2) synthesis (10 minutes after NMDA), while both COX-1 and COX-2 contribute to the second phase (3-24 hours after NMDA). Microglial COX-1 is strongly activated by ATP but not excitatory neurotransmitters or the Toll-like receptor 4 ligand bacterial lipopolysaccharide. ATP induced microglial COX-1 dependent prostaglandin E(2) synthesis is dependent on P2X7 receptors, extracellular Ca(2+) and cytoplasmic phospholipase A2. NMDA receptor activation induces ATP release from cultured neurons leading to microglial P2X7 receptor activation and COX-1 dependent prostaglandin E(2) synthesis in mixed microglial-neuronal cultures. Pharmacological inhibition of COX-1 has no effect on the cortical lesion produced by NMDA, but counteracts the neuroprotection exerted by inhibition of COX-2 or observed in mice lacking the prostaglandin E(2) receptor type 1. Similarly, the neuroprotection exerted by the prostaglandin E(2) receptor type 2 agonist butaprost is not observed after COX-1 inhibition. P2X7 receptors contribute to NMDA induced prostaglandin E(2) production in vivo and blockage of P2X7 receptors reverses the neuroprotection offered by COX-2 inhibition. These findings suggest that purinergic signaling in microglia triggered by neuronal ATP modulates excitotoxic cortical lesion by regulating COX-1 dependent prostanoid production and unveil a previously unrecognized protective role of microglial COX-1 in excitotoxic brain injury.
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Affiliation(s)
- Josef Anrather
- Division of Neurobiology, Department of Neurology and Neuroscience, Weill Cornell Medical College, New York, New York, United States of America.
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Orio M, Philouze C, Jarjayes O, Neese F, Thomas F. Spin interaction in octahedral zinc complexes of mono- and diradical Schiff and mannich bases. Inorg Chem 2010; 49:646-58. [PMID: 20000450 DOI: 10.1021/ic901846u] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The four Schiff bases 2-tert-butyl-4-methoxy-6-[(pyridin-2-ylmethylimino)methyl]phenol, 2,4-di-tert-butyl-6-[(pyridin-2-ylmethylimino)methyl]phenol, 2-tert-butyl-4-methoxy-6-(quinolin-8-yliminomethyl)phenol, and 2,4-di-tert-butyl-6-(quinolin-8-yliminomethyl)phenol) as well as one Mannich base, N,N',N,N'-bis[(2-hydroxy-3,5-di-tert-butylbenzyl)(2-pyridylmethyl)]ethylenediamine, and their zinc bis-phenolate complexes 1-5, respectively, have been prepared. The complexes 4 and 5 have been characterized by X-ray diffraction crystallography, showing a zinc ion within an octahedral environment, with a cis orientation of the phenolate moieties. 1-5 exhibit in their cyclic voltammetry curves two anodic reversible waves attributable to the successive oxidation of the phenolates into phenoxyl radicals. Bulk electrolysis at ca. +0.1 V affords the zinc-coordinated monophenoxyl radical species (1(*))(+)-(5(*))(+) characterized by UV-vis absorption bands at 400-440 nm. The more stable radicals are (3(*))(+) and (4(*))(+) (half-life higher than 90 min at 298 K), likely due to the increased charge delocalization within the quinoline moieties. These species exhibit a significant additional near-IR band (epsilon > 1650 M(-1) cm(-1)) attributed to a CT transition. In the two-electron-oxidized species (1(**))(2+)-(5(**))(2+) the radical spins present a weak magnetic coupling. EPR reveals an antiferromagnetic exchange interaction for (1(**))(2+)-(4(**))(2+), whereas an unusual ferromagnetic exchange coupling is operative in (5(**))(2+). The weak magnitude of experimental |J| values (within the 1-5 cm(-1) range) as well as their sign could be well reproduced by DFT calculations at the B3LYP level. The small energy gap between the ground and the first excited spin states allows us to investigate the zero-field splitting (ZFS) of the triplet by EPR spectroscopy. This parameter is found to be axial for all systems, with |D| values of 0.0163 cm(-1) for (1(**))(2+), 0.0182 cm(-1) for (2(**))(2+), 0.0144 cm(-1) for (3(**))(2+), 0.0160 cm(-1) for (4(**))(2+), and 0.0115 cm(-1) for (5(**))(2+). The trend between experimental ZFS is confirmed by DFT calculations, which give further insight regarding its sign (negative for all the compounds). Lower ZFS values are obtained for (2(**))(2+) compared to (1(**))(2+) (and also for (4(**))(2+) compared to (3(**))(2+)), which can be interpreted by an increased delocalization of the spin density over the methoxy para substituent. Significant spin population on the quinoline also contributes to a lowering of the |D| value, as observed when (3(**))(2+) is compared to (1(**))(2+) (and also when (4(**))(2+) is compared to (2(**))(2+)).
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Affiliation(s)
- M Orio
- Institute for Physical and Theoretical Chemistry, Universität Bonn, Wegelerstrasse 12, D-53113 Bonn, Germany
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Orio F, Giallauria F, Palomba S, Manguso F, Orio M, Tafuri D, Lombardi G, Carmina E, Colao A, Vigorito C. Metabolic and cardiopulmonary effects of detraining after a structured exercise training programme in young PCOS women. Clin Endocrinol (Oxf) 2008; 68:976-81. [PMID: 17980005 DOI: 10.1111/j.1365-2265.2007.03117.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
OBJECTIVE The aim of the present study was to determine if the favourable cardiopulmonary and metabolic benefits induced by exercise training (ET) programme are maintained after its cessation. PATIENTS Thirty-two young overweight polycystic ovary syndrome (PCOS) women matched for age and body mass index (BMI) with other 32 PCOS patients was enrolled. The first group [PCOS-T (trained)] underwent 24-week ET programme, whereas the second [PCOS-DT (detrained)] underwent 12-week ET programme followed by 12-week detraining period. METHODS At baseline, after 12- and 24-week follow-up, all PCOS women were studied for their hormonal (ovarian and adrenal androgens), metabolic (glucose and insulin) and lipid profile, and underwent cardiopulmonary exercise test. RESULTS After the initial 12-week ET programme, both PCOS-T and PCOS-DT groups, without differences between groups, showed a similar significant (P < 0.05) improvement in BMI, fasting insulin, areas under curve insulin (AUC(INS)), glucose and insulin AUC (AUC(GLU/INS)), high-density lipoprotein-cholesterol (HDL-C), low-density lipoprotein-cholesterol (LDL-C) and maximal oxygen consumption at cardiopulmonary exercise test (VO2max). At 24-week follow-up, PCOS-T group showed a significant (P < 0.05) improvement in BMI, fasting insulin, AUC(INS), AUC(GLU/INS), LDL-C, HDL-C and VO2max, in comparison to baseline and 12-week follow-up. At same follow-up visit, the all parameters resulted significantly (P < 0.05) worsened in PCOS-DT group in comparison to 12-week follow-up and PCOS-T group. In PCOS-DT group, no parameter assessed at 24-week follow-up was significantly different in comparison with baseline. CONCLUSION In young PCOS women, 12-week detraining resulted in a complete loss of the favourable adaptations obtained after ET.
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Affiliation(s)
- Francesco Orio
- Department of Molecular and Clinical Endocrinology and Oncology, Federico II University of Naples, Naples, Italy.
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Abstract
BACKGROUND AND PURPOSE Sublethal injury induces tolerance to a subsequent lethal insult, a phenomenon termed preconditioning (PC). PC occurs within hours (early tolerance) or days (delayed tolerance) after the inducing stimulus. In the brain, delayed tolerance has been studied extensively, but very little is known about early tolerance. We investigated whether the proinflammatory agent lipopolysaccharide (LPS), a well-established inducer of delayed tolerance, can also induce early tolerance and, if so, whether nitric oxide (NO) is involved in its mechanisms. METHODS In C57BL/6 mice, LPS was administered and N-methyl-D-aspartate (NMDA) was microinjected into the neocortex 30 minutes to 24 hours later. Lesion volume was assessed 24 hours after NMDA administration in thionine-stained sections. RESULTS LPS reduced NMDA lesions when administered 1 hour (-25+/-1%; P<0.05, n=5 per group) or 24 hours (-25+/-4%; P<0.05, n=5 per group) before NMDA application. LPS administration 30 minutes or 2 to 4 hours before NMDA administration was not neuroprotective (P>0.05). The protection at 1 hour was independent of protein synthesis and was blocked by inhibition of neuronal NO synthase or soluble guanylyl cyclase. Furthermore, early protection was not observed in neuronal or endothelial NO synthase-null mice, but it was present in inducible NO synthase-null mice. CONCLUSIONS The data demonstrate that LPS induces both early and late tolerance. At variance with delayed tolerance, which depends on inducible NO synthase and peroxynitrite, early tolerance is mediated by endothelial and neuronal NO through production of cGMP. The findings suggest that LPS can trigger signaling between endothelial cells and neurons, leading to NO production and cGMP-dependent neuroprotection.
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Affiliation(s)
- Marcello Orio
- Division of Neurobiology, Weill Medical College of Cornell University, 411 East 69th St, KB-410, New York, NY 10021, USA
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Abstract
We sought to determine whether reactive oxygen species (ROS) derived from cyclooxygenase-2 (COX-2) are involved in ischemic brain injury. Focal cerebral ischemia was induced by transient middle cerebral artery occlusion in C57BL/6 mice. The time course of neocortical ROS production was assessed in vivo using hydroethidine as a marker. The same brain sections were used for infarct volume measurements. Transient middle cerebral artery occlusion led to a biphasic increase in ROS production with peaks 2 and 72 h after reperfusion. The COX-2 inhibitor NS398 (10 mg/kg) attenuated the production of COX-2-derived prostaglandin E(2) and reduced brain injury, but did not affect ROS production at 2 and 72 h. Similarly, ROS production was not reduced in COX-2-null mice. In contrast, ROS production and brain injury were reduced in mice lacking the nox2 subunit of the superoxide-producing enzyme nicotinamide adenine dinucleotide phosphate (reduced form) oxidase. The data suggest that COX-2 is not a major source of oxygen radicals after cerebral ischemia and raise the possibility that other COX-2 reaction products, including prostanoids or nonoxygen-based radicals, mediate the COX-2-dependent component of the injury.
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Affiliation(s)
- Alexander Kunz
- Division of Neurobiology, Weill Medical College of Cornell University, New York, NY 10021, USA
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Horner O, Mouesca JM, Solari PL, Orio M, Oddou JL, Bonville P, Jouve HM. Spectroscopic description of an unusual protonated ferryl species in the catalase from Proteus mirabilis and density functional theory calculations on related models. Consequences for the ferryl protonation state in catalase, peroxidase and chloroperoxidase. J Biol Inorg Chem 2007; 12:509-25. [PMID: 17237942 DOI: 10.1007/s00775-006-0203-9] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2006] [Accepted: 12/21/2006] [Indexed: 11/24/2022]
Abstract
The catalase from Proteus mirabilis peroxide-resistant bacteria is one of the most efficient heme-containing catalases. It forms a relatively stable compound II. We were able to prepare samples of compound II from P. mirabilis catalase enriched in (57)Fe and to study them by spectroscopic methods. Two different forms of compound II, namely, low-pH compound II (LpH II) and high-pH compound II (HpH II), have been characterized by Mössbauer, extended X-ray absorption fine structure (EXAFS) and UV-vis absorption spectroscopies. The proportions of the two forms are pH-dependent and the pH conversion between HpH II and LpH II is irreversible. Considering (1) the Mössbauer parameters evaluated for four related models by density functional theory methods, (2) the existence of two different Fe-O(ferryl) bond lengths (1.80 and 1.66 A) compatible with our EXAFS data and (3) the pH dependence of the alpha band to beta band intensity ratio in the absorption spectra, we attribute the LpH II compound to a protonated ferryl Fe(IV)-OH complex (Fe-O approximately 1.80 A), whereas the HpH II compound corresponds to the classic ferryl Fe(IV)=O complex (Fe=O approximately 1.66 A). The large quadrupole splitting value of LpH II (measured 2.29 mm s(-1) vs. computed 2.15 mm s(-1)) compared with that of HpH II (measured 1.47 mm s(-1) vs. computed 1.46 mm s(-1)) reflects the protonation of the ferryl group. The relevancy and involvement of such (Fe(IV)=O/Fe(IV)-OH) species in the reactivity of catalase, peroxidase and chloroperoxidase are discussed.
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Affiliation(s)
- O Horner
- Laboratoire de Physicochimie des Métaux en Biologie, UMR CEA/CNRS/Université Joseph Fourier 5155, CEA/Grenoble, 38054, Grenoble Cedex 9, France
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Kawano T, Anrather J, Zhou P, Park L, Wang G, Frys KA, Kunz A, Cho S, Orio M, Iadecola C. Prostaglandin E2 EP1 receptors: downstream effectors of COX-2 neurotoxicity. Nat Med 2006; 12:225-9. [PMID: 16432513 DOI: 10.1038/nm1362] [Citation(s) in RCA: 315] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2005] [Accepted: 01/02/2006] [Indexed: 12/18/2022]
Abstract
Cyclooxygenase-2 (COX-2), a rate-limiting enzyme for prostanoid synthesis, has been implicated in the neurotoxicity resulting from hypoxia-ischemia, and its inhibition has therapeutic potential for ischemic stroke. However, COX-2 inhibitors increase the risk of cardiovascular complications. We therefore sought to identify the downstream effectors of COX-2 neurotoxicity, and found that prostaglandin E(2) EP1 receptors are essential for the neurotoxicity mediated by COX-2-derived prostaglandin E(2). EP1 receptors disrupt Ca(2+) homeostasis by impairing Na(+)-Ca(2+) exchange, a key mechanism by which neurons cope with excess Ca(2+) accumulation after an excitotoxic insult. Thus, EP1 receptors contribute to neurotoxicity by augmenting the Ca(2+) dysregulation underlying excitotoxic neuronal death. Pharmacological inhibition or gene inactivation of EP1 receptors ameliorates brain injury induced by excitotoxicity, oxygen glucose deprivation and middle cerebral artery (MCA) occlusion. An EP1 receptor inhibitor reduces brain injury when administered 6 hours after MCA occlusion, suggesting that EP1 receptor inhibition may be a viable therapeutic option in ischemic stroke.
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Affiliation(s)
- Takayuki Kawano
- Department of Neurology and Neuroscience, Weill Medical College of Cornell University, New York, New York 10021, USA
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Criscuolo C, Banfi S, Orio M, Gasparini P, Monticelli A, Scarano V, Santorelli FM, Perretti A, Santoro L, De Michele G, Filla A. A novel mutation in SACS gene in a family from southern Italy. Neurology 2004; 62:100-2. [PMID: 14718706 DOI: 10.1212/wnl.62.1.100] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
A form of autosomal recessive spastic ataxia (ARSACS) has been described in the Charlevoix and Saguenay regions of Quebec. So far a frameshift and a nonsense mutation have been identified in the SACS gene. The authors report a new mutation (1859insC), leading to a frameshift with a premature termination of the gene product sacsin, in two sisters from consanguineous parents. The phenotype is similar to previously described patients with ARSACS.
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Affiliation(s)
- C Criscuolo
- Department of Neurological Sciences, Federico II University, Naples, Italy.
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De Michele G, Maltecca F, Carella M, Volpe G, Orio M, De Falco A, Gombia S, Servadio A, Casari G, Filla A, Bruni A. Dementia, ataxia, extrapyramidal features, and epilepsy: phenotype spectrum in two Italian families with spinocerebellar ataxia type 17. Neurol Sci 2004; 24:166-7. [PMID: 14598069 DOI: 10.1007/s10072-003-0112-4] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
We observed two families with a dominantly inherited complex neurological syndrome with onset in adulthood. Family F included 9 affected in four generations. One patient showed prominent anticipation of onset age. Onset was with cerebellar signs followed by dementia, psychiatric symptoms, seizures, and extrapyramidal features. Family M included 14 affected individuals in five generations. Presenting symptoms were either psychiatric and cognitive impairment or a cerebellar syndrome. Extrapyramidal features, dysphagia, incontinence, seizures, and myoclonus may occur. In both families magnetic resonance imaging showed marked atrophy of the brain and cerebellum. Molecular analyses demonstrated an expanded CAG/CAA repeat in the in the TATA box-binding protein (TBP) gene (SCA17).
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Affiliation(s)
- G De Michele
- Dipartimento di Scienze Neurologiche, Università Federico II, via Pansini 5, Naples, Italy
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De Michele G, Pocchiari M, Petraroli R, Manfredi M, Caneve G, Coppola G, Casali C, Saccà F, Piccardo P, Salvatore E, Berardelli A, Orio M, Barbieri F, Ghetti B, Filla A. Variable phenotype in a P102L Gerstmann-Sträussler-Scheinker Italian family. Can J Neurol Sci 2003; 30:233-6. [PMID: 12945948 DOI: 10.1017/s0317167100002651] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
BACKGROUND Gerstmann-Sträussler-Scheinker disease is an autosomal dominant prion disease. The clinical features include ataxia, dementia, spastic paraparesis and extrapyramidal signs. METHODS We report a new large Italian family affected by Gerstmann-Sträussler-Scheinker disease. RESULTS The four generation pedigree includes 11 patients. The mean age at onset +/- SD was 41.4 +/- 16.2 years. Mean disease duration to death in four patients was 5.5 +/- 1.7 years. Two clinical patterns were evident: cognitive impairment with scarce neurological features or ataxia followed by cognitive impairment. Molecular analysis showed P102L mutation in PRNP gene. CONCLUSION Three Italian families have been reported to date. The variable phenotype has already been reported, and does not appear related to the codon 129 polymorphism.
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Rivera Garay P, Orio M, Hinostroza J, Pastor P, Gorena M, Hernández J. [Does extracorporeal lithotripsy causes hearing loss?]. Actas Urol Esp 2001; 25:549-52. [PMID: 11692796 DOI: 10.1016/s0210-4806(01)72670-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
INTRODUCTION The electrohydraulic lithotripter has revolutiomised the treatment of urolithiasis. It produces shock waves by electrical discharge in water associated at a noise. We know that the hearing damage is above 85 decibels. Our goal is determine if the Econolith 2000 lithotriptor produce hearing damage. PATIENTS AND METHODS 10 patients were treated. They had audiometry prior to a single exposure to lithotripsy and twenty four hours after treatment. All our patients wore protective ear. The intensity of the sound was measured. RESULTS Inside of the operated room the intensity of the sound was 96 decibels, outside was 70. There weren't hearing damage in the patients. CONCLUSIONS The lithotriptor Econolith 2000 doesn't produce hearing damage in patients with protective ear.
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Affiliation(s)
- P Rivera Garay
- Unidad de Urología y Otorrinolaringología, Facultad de Medicina, Universidad de La Frontera, Chile
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Rivera P, Orio M, Hinostroza J, Venegas P, Pastor P, Gorena M, Lagos M, Pinochet R. [Our experience with 1 mg BCG vaccine instillation in T1 stage cancer of the bladder]. Actas Urol Esp 1999; 23:757-62. [PMID: 10608059 DOI: 10.1016/s0210-4806(99)72366-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
UNLABELLED We studied 67 patients with bladder cancer in stage T1, with terminated BCG treatment and in pursuit. No stage Ta neither carcinoma in situ was included. The protocol was: beginning of treatment upon retiring vesical catheter, instilation of 1 mg of liofilized BCG vaccine (16 x 10(6) bacilles) in 40-50 ml of intravesical saline solution. A weekly instilation during the first month. An instilation each 15 days during the second and third month and one monthly until complete 12 months of treatment. Also was carried out an study of T lymphocites and cytokines. RESULTS The average followup of the 67 patients treated was 51.3 months. 17 patients relapses (25.4%). A 33% were grade 3 and 27% grade 2. Like complications there was a case of inguinal TBC adenititis, 2 TBC prostatitis, 2 TBC cistitis and 5 cases of slight disuric syndrome. The study of subpopulations of lymphocites in peripheral blood demonstrated a significant increase of CD3 and CD4/CD8 ratio. The interleukin 2 measurement in serum also increased significantly after the BCG instilations. CONCLUSIONS Our protocol gets similar results to the higher doses, but with minimal complications diminishing the relapses of the tumors in stage T1. A monthly maintenance dose would help to maintain immunity.
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Affiliation(s)
- P Rivera
- Unidad de Urología, Facultad de Medicina, Universidad de La Frontera de Temuco-Chile
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Rivera P, Ibacache G, García M, Roa I, Orio M. [Cancer of the prostate: evaluation of the expression of the mutated protein of the 53 tumor suppressor gene]. Actas Urol Esp 1997; 21:822-6. [PMID: 9471864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/10/2023]
Abstract
UNLABELLED Prostate cancer is the most common tumour in men, and is most frequently established late in life. The objective of the article is to determine the protein expression of gene p53 in prostate cancer and to correlate the findings with clinical, morphological and epidemiological parameters. MATERIAL AND METHODS Immunohistochemical techniques with monoclonal antibody used to study the gene p53 expression. The study included 35 prostate carcinoma: 4 cases in stage A; 5 cases in stage B; 12 in stage C and 14 in stage D. The control group consisted in 10 benign prostate hyperplasia. Average age was 66.8 (SD +/- 6.7 years). RESULTS Positive staining for gene p53 protein was seen in 11 of the 35 cases (31.4%). All stage A and B tumours were negative; however, stage C and D tumours were positive in 16 and 64% cases respectively. In the control group all cases were gene p53 negative. No statistical relationship was seen between Gleason Index and positive results for p53. There was a significant difference between gene 53 expression and clinical stage. CONCLUSIONS Results show that the immunohistochemical expression of gen p53 mutated protein keeps no relation to Gleason's rating index and is seen with significantly higher frequency in advanced, primarily stage D tumours.
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Affiliation(s)
- P Rivera
- Departamento Especialidades U, de Anatomía Patológica-Citopatología, Facultad de Medicina, Universidad de la Frontera, Temuco, Chile
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Rivera P, Inostroza J, Orio M. [Response of lymphocytes and cytokines in patients with superficial bladder cancer treated with 1 mg of BCG vaccine instillations]. Actas Urol Esp 1996; 20:812-7. [PMID: 9065092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
It was carried out a study of lymphocytes CD3, CD8 and cytokines in the blood of 13 patients, with superficial bladder cancer, and treated by instillations with BCG vaccine, with a dose of 1 mg. in an annual scheme, being related them before and after treatment. A control group of 10 patients without bladder cancer and without vaccine instillations were compared. The measurings took place in a blind way, previous to BCG treatment, 15 days, 3 days, 3 months, 6 months and 12 months of treatment. It was observed in postBCG treatment, a significative increase in the count of CD3 lymphocytes and the CD4/CD8 cociente (both, P < 0.05). Concerned to cytokines, a significative increase was only demonstrated by interleukin-2 in the post BCG group (P < 0.05). In both (lymphocytes and cytokines) the control groups didn't demonstrate statistics signification. The studies where analysed by means of ANDEVA test, under 2 x 2 cross over design, student t and no parametric tests. In conclusion, bladder instillations of 1 mg. of BCG vaccine as prophylactic treatment of superficial bladder cancer, it's capable of developing lymphocytic answer and stimulate the increase of interleukin-2 in the serum.
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