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Orlandini A. Clinical trials with ST-segment elevation myocardial infarction: reply. Eur Heart J 2006. [DOI: 10.1093/eurheartj/ehl187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Ienco A, Mealli C, Orlandini A, Galindo A, Grirrane A, del Río D, Pastor A, Fernández Sanz J, Caneschi A. Supramolecular interactions as determining factors of the primary geometry of metallic building blocks. Acta Crystallogr A 2005. [DOI: 10.1107/s0108767305086824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Yakhvarov D, Sinyashin O, Barbaro P, Mañas S, Midollini S, Orlandini A, Peruzzini M, Zanobini F. Synthesis and X-ray study of the P 5-polyphosphorus rhodium complex [(dppm){Ph 2PCH 2P(Ph 2)PPPP}Rh]OTf. Acta Crystallogr A 2005. [DOI: 10.1107/s0108767305087064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Bedetti G, Pasanisi EM, Tintori G, Fonseca L, Tresoldi S, Minneci C, Jambrik Z, Ghelarducci B, Orlandini A, Picano E. Stress echo in chest pain unit: the SPEED trial. Int J Cardiol 2005; 102:461-7. [PMID: 16004892 DOI: 10.1016/j.ijcard.2004.05.058] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/18/2004] [Accepted: 05/05/2004] [Indexed: 10/26/2022]
Abstract
BACKGROUND Emergency room (ER) evaluation of patients with acute chest pain and non-diagnostic electrocardiography (ECG) remains a frequent and difficult problem. AIM To assess safety and prognostic implications of pharmacological stress echocardiography in the ER chest pain unit (CPU). METHODS A total of 552 patients (321 males, age 58+/-12.6 years) with acute chest pain, negative serial enzymes and/or troponin, and ECG recordings, and normal/unchanged resting left ventricular function were prospectively enrolled and underwent pharmacological (dipyridamole or dobutamine) stress echo. Six echo labs that had passed the preliminary quality control for stress echo reading entered the study. Follow-up was obtained in all patients after a median period of 13 months. RESULTS No significant adverse events were observed during the test. Stress echocardiography was negative in 502 patients (91%) and positive in 50 (9%). The 502 patients with negative stress echocardiography were discharged with no or unchanged anti-ischemic medications. While the 50 patients with positive stress echo were admitted to the coronary care unit, 44 of these underwent coronary angiography with the result that 42 out of 44 showed significant coronary artery disease. There were 45 events in the follow-up: six in the 502 patients with negative and 39 in the 50 patients with positive stress echo (1.2% vs. 78%, p<0.001). The negative predictive value of stress echocardiography was 98.8% for all events and 99.6% for hard events. CONCLUSIONS Stress echocardiography is a feasible, safe, and effective tool for early stratification of patients admitted to the ER with acute chest pain and non-ischemic ECG and resting echo.
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Moya-Hernández MR, Mederos A, Domínguez S, Orlandini A, Ghilardi CA, Cecconi F, González-Vergara E, Rojas-Hernández A. Speciation study of the anti-inflammatory drug tenoxicam (Htenox) with Cu(II): X-ray crystal structure of [Cu(tenox)(2)(py)(2)].EtOH. J Inorg Biochem 2003; 95:131-40. [PMID: 12763657 DOI: 10.1016/s0162-0134(03)00095-3] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A speciation study was carried out in aqueous solution of the anti-inflammatory drug tenoxicam (Htenox), under quasi-physiological conditions (temperature of 37 degrees C and ionic strength 0.15 M NaCl) in order to determine the acidity constants from spectrophotometric studies, the pK(a) values found being pK(1)=1.143+/-0.008 and pK(2)=4.970+/-0.004. Subsequently, the spectrophotometrical speciation of the different complexes of Cu(II) with the drug was performed under the same conditions of temperature and ionic strength, observing the formation of Cu(Htenox)(2)(2+) with log beta(212)=20.05+/-0.01, Cu(tenox)(2) with log beta(012)=13.6+/-0.1, Cu(Htenox)(2+) with log beta(111)=10.52+/-0.08, as well as Cu(tenox)(+) with log beta(011)=7.0+/-0.2, all of them in solution, and solid species Cu(tenox)(2)(s) with an estimated value of log beta(012)(s) approximately 18.7. The crystalline structure of the complex [Cu(tenox)(2)(py)(2)]. EtOH, was also determined, and it was observed that tenoxicam employs the oxygen of the amide group and the pyridyl nitrogen to bond to the cation.
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Sacconi L, Orlandini A, Midollini S. Synthesis, properties, and structural characterizations of nonstoichiometric hydrido complexes of nickel with the tetradentate ligand tris(2-diphenylphosphinoethyl)amine. Inorg Chem 2002. [DOI: 10.1021/ic50142a017] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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32
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Bianchini C, Mealli C, Meli A, Orlandini A, Sacconi L. Mono- and dinuclear carbon disulfide metal complexes with 1,1,1-tris((diphenylphosphino)methyl)ethane. Inorg Chem 2002. [DOI: 10.1021/ic50212a025] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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33
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Ghilardi CA, Mealli C, Midollini S, Orlandini A. Tetrahedral structure of the high-spin cobalt(I) complex (np3)CoBr. A symmetry-forbidden rearrangement to five-coordination. Inorg Chem 2002. [DOI: 10.1021/ic00196a009] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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34
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Orlandini A, Sacconi L. Synthesis, properties, and x-ray characterization of aquo and hydroxo complexes of cobalt(II) and nickel(II) with poly(tertiary phosphines). Inorg Chem 2002. [DOI: 10.1021/ic50155a018] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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35
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Ghilardi CA, Mealli C, Midollini S, Nefedov VI, Orlandini A, Sacconi L. Transition-metal complexes with sulfur atoms as ligands. 5. Synthesis and structural characterization of doubly sulfur-bridged binuclear complexes of cobalt with the tris(tertiary phosphine) 1,1,1-tris((diphenylphosphino)methyl)ethane. Inorg Chem 2002. [DOI: 10.1021/ic50210a053] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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36
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Cecconi F, Di Vaira M, Midollini S, Orlandini A, Sacconi L. Singlet .dblharw. quintet spin transitions of iron(II) complexes with a P4Cl2 donor set. X-ray structures of the compound FeCl2(Ph2PCH:CHPPh2)2 and of its acetone solvate at 130 and 295 K. Inorg Chem 2002. [DOI: 10.1021/ic50224a053] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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37
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Ghilardi CA, Midollini S, Orlandini A, Sacconi L. Single- and mixed-metal complexes with cyclo-triphosphorus and 1,1,1-tris((diphenylphosphino)methyl)ethane, triphos. Synthesis and structural characterization of [(triphos)Co(.eta.3-P3)] and [(triphos)Co(.mu.-(.eta.3-P3)){Cr2(CO)10}]. Inorg Chem 2002. [DOI: 10.1021/ic50204a005] [Citation(s) in RCA: 58] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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38
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Mealli C, Orlandini A, Sacconi L, Stoppioni P. Synthesis and structural characterization of a sulfur dioxide complex of nickel with tris(2-diphenylphosphino)ethyl)amine. Inorg Chem 2002. [DOI: 10.1021/ic50189a010] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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39
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Dapporto P, Midollini S, Orlandini A, Sacconi L. Complexes of cobalt, nickel, and copper with the tripod ligand 1,1,1-tris(diphenylphosphinomethyl)ethane (p3). Crystal structures of the [Co(p3)(BH4)] and [Ni(p3)(SO2)] complexes. Inorg Chem 2002. [DOI: 10.1021/ic50165a040] [Citation(s) in RCA: 61] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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40
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Gatteschi D, Ghilardi CA, Orlandini A, Sacconi L. Low-temperature crystal structure and ESR spectra of bis(isothiocyanato)[N-(2-(diphenylphosphino)ethyl)-N',N'-diethylethylenediamine]cobalt(II), a five-coordinate complex exhibiting spin equilibrium. Inorg Chem 2002. [DOI: 10.1021/ic50189a011] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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41
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Bianchini C, Meli A, Orlandini A. Reactivity of the triethylphosphine-carbon disulfide adduct (Et3P.CS2) toward cobalt(II) cations in the presence of the tris (tertiary phosphines) triphos and etriphos. X-ray crystal structure of the complex [(etriphos)Co(S2C(H)PEt3)](BPh4)2. Inorg Chem 2002. [DOI: 10.1021/ic00142a011] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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42
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Ghilardi CA, Midollini S, Orlandini A. A unidentate attachment of the tetrahydroborate group. Crystal and molecular structure of (tetrahydroborato)[1,1,1-tris((diphenylphosphino)methyl)ethane-P,P',P"]copper(I). Inorg Chem 2002. [DOI: 10.1021/ic00141a043] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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43
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Bianchini C, Meli A, Orlandini A. Chemistry of Et3P.CS2 metal complexes: synthesis of 1,1-dithiolate complexes via nucleophilic attacks on [(triphos)Co(S2CPEt3)](BPh4)2. X-ray structure of [(triphos)Co(S2CO)]. Inorg Chem 2002. [DOI: 10.1021/ic00142a012] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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44
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Bedetti G, Pasanisi E, Tintori G, Fonseca L, Tresoldi S, Minneci C, Orlandini A, Ghelarducci B, Bugiardini R, Picano E. Stress echo in chest pain unit: the SPEED (Stress Pharmacologic Echocardiography in Emergency Department) trial. J Am Coll Cardiol 2002. [DOI: 10.1016/s0735-1097(02)81695-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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45
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Manfredi M, Donati E, Magni E, Salih S, Orlandini A, Beltramello A. Spinal dysraphism in an elderly patient. Neurol Sci 2001; 22:405-7. [PMID: 11917981 DOI: 10.1007/s100720100074] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Spinal dysraphisms are diagnosed more frequently at birth or in infancy. We report a spinal malformation compatible with lipomyeloschisis in an elderly patient presenting with symptoms and signs of myelopathy. Magnetic resonance imaging revealed an intraspinal mass continuous with a subcutaneous lipoma. Three-dimensional computed tomography reconstructions better showed the spinal dysraphism; dermal sinus was also evident. Neuroimaging can define the precise diagnosis also in elderly patients presenting with myelopathy and can provide valuable structural details.
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Lugari R, Ugolotti D, Dei Cas A, Barilli AL, Iotti M, Marani B, Orlandini A, Gnudi A, Zandomeneghi R. Urinary excretion of glucagon-like peptide 1 (GLP-1) 7-36 amide in human type 2 (non-insulin-dependent) diabetes mellitus. Horm Metab Res 2001; 33:568-71. [PMID: 11561219 DOI: 10.1055/s-2001-17206] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Abstract
The urinary excretion of insulinotropic glucagon-like peptide 1 (GLP-1) was investigated as an indicator of renal tubular integrity in 10 healthy subjects and in 3 groups of type 2 diabetic patients with different degrees of urinary albumin excretion rate. No significant difference emerged between the groups with respect to age of the patients, known duration of diabetes, metabolic control, BMI, or residual beta-cell pancreatic function. Endogenous creatinine clearance was significantly reduced under conditions of overt diabetic nephropathy, compared with normo and microalbuminuric patients (p < 0.01). Urinary excretion of GLP-1 was significantly higher in normoalbuminuric patients compared to controls (490.4 +/- 211.5 vs. 275.5 +/- 132.1 pg/min; p < 0.05), with further increase under incipient diabetic nephropathy conditions (648.6 +/- 305 pg/min; p < 0.01). No significant difference resulted, in contrast, between macroproteinuric patients and non-diabetic subjects. Taking all patients examined into account, a significant positive relationship emerged between urinary GLP-1 and creatinine clearance (p = 0.004). In conclusion, an early tubular impairment in type 2 diabetes would occur before the onset of glomerular permeability alterations. The tubular dysfunction seems to evolve with the development of persistent microalbuminuria. Finally, the advanced tubular involvement, in terms of urinary GLP1 excretion, under overt diabetic nephropathy conditions would be masked by severe concomitant glomerular damage with the coexistence of both alterations resulting in a peptide excretion similar to control subjects.
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Barbaro P, Cecconi F, Dakternieks D, Dominguez S, Duthie A, Ghilardi CA, Midollini S, Orlandini A, Vacca A. Beryllium(II) Complexes of the Kläui Tripodal Ligand Cyclopentadienyltris(diethylphosphito-P)cobaltate(−). Inorg Chem 2001; 40:2725-9. [PMID: 11375687 DOI: 10.1021/ic010021+] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The interactions of the beryllium(II) ion with the cyclopentadienyltris(diethylphosphito-P)cobaltate monoanion, L(-), have been investigated, in aqueous solution, by synthetic methods, potentiometry, ESMS, and (1)H, (31)P, and (9)Be NMR spectroscopy. L(-) has been found able to displace either two or three water molecules in the beryllium(II) coordination sphere, to form mononuclear, dinuclear, and trinuclear derivatives, in which the metal ion is pseudotetrahedrally coordinated. The species [BeL(H(2)O)](+) and [Be(2)L(2)(mu-OH)](+) have been identified in solution while complexes of formula BeL(2) and [Be(3)L(4)](ClO(4))(2) have been isolated as solid materials. The species [BeL(OPPh(2))](+), closely related to [BeL(H(2)O)](+), has been characterized in acetone solution and isolated as tetraphenylborate salt. The structure of the unusual trimeric complex [Be(3)L(4)](2+) has been elucidated by an unprecedented 2D (9)Be-(31)P NMR correlation spectrum showing the presence of a single central beryllium nucleus and two equivalent terminal beryllium nuclei. The three beryllium centers are held together by four cobaltate ligands, which display two different bonding modes: two ligands are terminally linked with all the three oxygen donors to one terminal beryllium, and the other two bridge two metal centers, sharing the oxygen donors between central and terminal beryllium atoms.
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Orlandini A, Tuero E, Paolasso E, Vilamajó OG, Díaz R. Usefulness of pharmacologic stress echocardiography in a chest pain center. Am J Cardiol 2000; 86:1247-50, A6. [PMID: 11090800 DOI: 10.1016/s0002-9149(00)01211-x] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
We tested the value of a stress echocardiography-based algorithm used in a chest pain center. The algorithm had superlative negative predictive value for cardiac events, allowing an early discharge.
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49
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Lugari R, Dell'Anna C, Ugolotti D, Dei Cas A, Barilli AL, Zandomeneghi R, Marani B, Iotti M, Orlandini A, Gnudi A. Effect of nutrient ingestion on glucagon-like peptide 1 (7-36 amide) secretion in human type 1 and type 2 diabetes. Horm Metab Res 2000; 32:424-8. [PMID: 11069208 DOI: 10.1055/s-2007-978665] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Exogenous glucagon-like peptide 1(GLP-1) bioactivity is preserved in type 2 diabetic patients, resulting the peptide administration in a near-normalization of plasma glucose mainly through its insulinotropic effect. GLP-1 also reduces meal-related insulin requirement in type 1 diabetic patients, suggesting an impairment of the entero-insular axis in both diabetic conditions. To investigate this metabolic dysfunction, we evaluated endogenous GLP-1 concentrations, both at fasting and in response to nutrient ingestion, in 16 type 1 diabetic patients (age = 40.5 +/- 14yr, HbA1C = 7.8 +/- 1.5%), 14 type 2 diabetics (age = 56.5 +/- 13yr, HbA1C = 8.1 +/- 1.8%), and 10 matched controls. In postabsorptive state, a mixed breakfast (230 KCal) was administered to all subjects and blood samples were collected for plasma glucose, insulin, C-peptide and GLP-1 determination during the following 3 hours. In normal subjects, the test meal induced a significant increase of GLP-1 (30', 60': p < 0.01), returning the peptide values towards basal concentrations. In type 2 diabetic patients, fasting plasma GLP-1 was similar to controls (102.1 +/- 1.9 vs. 97.3 +/- 4.01 pg/ml), but nutrient ingestion failed to increase plasma peptide levels, which even decreased during the test (p < 0.01). Similarly, no increase in postprandial GLP-1 occurred in type 1 diabetics, in spite of maintained basal peptide secretion (106.5 +/- 1.5 pg/ml). With respect to controls, the test meal induced in both diabetic groups a significant increase in plasma glucagon levels at 60' (p < 0.01). In conclusion, either in condition of insulin resistance or insulin deficiency chronic hyperglycemia, which is a common feature of both metabolic disorders, could induce a progressive desensitization of intestinal L-cells with consequent peptide failure response to specific stimulation.
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Manfredi M, Magni E, Gandolfini M, Beltramello A, Orlandini A, Donati E. Superficial siderosis of the central nervous system and anticoagulant therapy: a case report. ITALIAN JOURNAL OF NEUROLOGICAL SCIENCES 1999; 20:247-9. [PMID: 10551912 DOI: 10.1007/s100720050039] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Superficial siderosis of the central nervous system is a rare condition characterized by deposition of haemosiderin in the leptomeninges and in the subpial layers of the brain and spinal cord. With the widespread use of magnetic resonance imaging, an increasing number of cases of superficial siderosis are being discovered, secondary forms being more frequent than idiopathic ones. We report a 78-year-old man in oral anticoagulant therapy, who presented neurosensory hearing loss, gait ataxia and spastic paraparesis. Magnetic resonance imaging suggested the diagnosis of superficial siderosis of the central nervous system, without an evident bleeding source.
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