476
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Rocha J, Esculcas AP, Fernandez C, Amoureux JP. Two-Dimensional Triple-Quantum 27Al MAS NMR Spectroscopic Study of the High-Temperature Phase Transformation of Microporous VPI-5. ACTA ACUST UNITED AC 1996. [DOI: 10.1021/jp9613504] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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477
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Anderson M, Rocha J, Lin Z, Philippou A, Orion I, Ferreira A. Isomorphous substitution in the microporous titanosilicate ETS-10. ACTA ACUST UNITED AC 1996. [DOI: 10.1016/0927-6513(95)00098-4] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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478
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Rocha J, Brandão P, Lin Z, Esculcas AP, Ferreira A, Anderson MW. Synthesis and Structural Studies of Microporous Titanium−Niobium−Silicates with the Structure of Nenadkevichite. ACTA ACUST UNITED AC 1996. [DOI: 10.1021/jp961082+] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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479
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Mangione P, Moussellard H, Lesprit E, Rocha J, Sénégas J. Anterior evacuation of a spontaneous cervical epidural hematoma. EUROPEAN SPINE JOURNAL : OFFICIAL PUBLICATION OF THE EUROPEAN SPINE SOCIETY, THE EUROPEAN SPINAL DEFORMITY SOCIETY, AND THE EUROPEAN SECTION OF THE CERVICAL SPINE RESEARCH SOCIETY 1995; 4:257-9. [PMID: 8528787 DOI: 10.1007/bf00303422] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
The case of a spontaneous cervical epidural hematoma treated by anterior corporectomy and arthrodesis is reported. An anterior approach is preferable when an epidural hematoma is anterior to the dural sac and when MRI shows an aspect of old clotted blood that can not be easily evacuated by a posterior laminectomy.
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480
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Rocha J, Bohner J, Kömpf J. Transient bisalbuminemia: separation by isoelectric focusing of human albumin fractions linked to different numbers of benzylpenicilloyl groups. Electrophoresis 1995; 16:1031-3. [PMID: 7498126 DOI: 10.1002/elps.11501601174] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The behavior of modified human serum albumin (HSA) from penicillin-treated patients and in vitro conjugated samples was studied by isoelectric focusing in the absence and presence of 8 M urea. It is shown that samples classified as bisalbuminemic after separation under native conditions display a spectrum of several major bands with decreasing pIs when focusing is done in the presence of 8 M urea. In this spectrum, the distances between two consecutive major bands are as expected from a 2-unit charge difference. Since this result is compatible with the blockage of a lysine residue with a benzylpenicilloyl (BPO) group, each major band can be interpreted as representing an HSA fraction covalently linked to different numbers of benzylpenicilloyl groups. The separation methods presented therefore seem to constitute simple and reliable tools for a detailed assessment of the extent of BPO covalent binding to HSA both in vivo and in vitro.
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481
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Anderson MW, Philippou A, Lin Z, Ferreira A, Rocha J. Al,Ti Avoidance in the Microporous Titanoaluminosilicate ETAS-10. ACTA ACUST UNITED AC 1995. [DOI: 10.1002/anie.199510031] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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482
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Anderson MW, Philippou A, Lin Z, Ferreira A, Rocha J. Ein mikroporöses Titanaluminiumsilicat ETAS-10, in dem die Al- und Ti-Atome einander ausweichen. Angew Chem Int Ed Engl 1995. [DOI: 10.1002/ange.19951070924] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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483
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Pascoal Neto C, Rocha J, Gil A, Cordeiro N, Esculcas AP, Rocha S, Delgadillo I, de Jesus JD, Correia AJ. 13C solid-state nuclear magnetic resonance and Fourier transform infrared studies of the thermal decomposition of cork. SOLID STATE NUCLEAR MAGNETIC RESONANCE 1995; 4:143-51. [PMID: 7773647 DOI: 10.1016/0926-2040(94)00039-f] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
The thermal decomposition of cork has been studied by Fourier transform infrared (FTIR) spectroscopy and 13C solid-state nuclear magnetic resonance (NMR) spectroscopy with cross-polarization and magic-angle spinning (CP-MAS), high-power 1H decoupling (HPDEC) and cross-polarization depolarization-polarization (CPDP). Waxes and other soluble components of cork begin to decompose at ca. 150 degrees C. This is accompanied by partial decomposition of suberin, probably initiated at the points of attachment to the cell wall. The carbohydrates begin to decompose at ca. 200 degrees C. The decomposition of lignin begins at 250-300 degrees C, while suberin undergoes further degradation. Significant amounts of coke are formed in the process. At 400 degrees C cork has been transformed into coke with traces of partially decomposed suberin. The thermal decomposition of cork is dependent on the calcination time, particularly in the 200-350 degrees C range.
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484
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Lourenço JP, Ribeiro MF, Ribeiro FR, Rocha J, Gabelica Z. Solid-state NMR and powder XRD studies of the structure of SAPO-40 upon hydration–dehydration cycles. ACTA ACUST UNITED AC 1995. [DOI: 10.1039/ft9959102213] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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485
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Anderson M, Terasaki O, Ohsuna T, Philippou A, MacKay S, Ferreira A, Rocha J, Lidin S. Structure of the microporous titanosilicate ETS-10. ZEOLITE SCIENCE 1994: RECENT PROGRESS AND DISCUSSIONS - SUPPLEMENTARY MATERIALS TO THE 10TH INTERNATIONAL ZEOLITE CONFERENCE, GARMISH-PARTENKIRCHEN, GERMANY, JULY 17-22, 1994 1995. [DOI: 10.1016/s0167-2991(06)81181-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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486
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Rocha J. Victims of violence flood Rio's hospitals. BMJ (CLINICAL RESEARCH ED.) 1994; 309:1394. [PMID: 7819844 DOI: 10.1136/bmj.309.6966.1394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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487
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Rocha J. Brazil investigates drug's possible link with birth defects. BMJ (CLINICAL RESEARCH ED.) 1994; 309:757-8. [PMID: 7950553 DOI: 10.1136/bmj.309.6957.757a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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488
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Amorim A, Rocha J, Santos MT. Distribution of ACP1, AK1 and ALAD polymorphisms in northern Portugal. GENE GEOGRAPHY : A COMPUTERIZED BULLETIN ON HUMAN GENE FREQUENCIES 1994; 8:147-150. [PMID: 7547603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Red cell acid phosphatase (ACP1), adenylate kinase 1 (AK1), and aminolevulinate dehydratase (ALAD) polymorphisms were studied in a population sample from Northern Portugal. The gene frequency estimates found were: ACP1*A = 0.2825, ACP1*B = 0.6625, ACP1*C = 0.0547, ACP1*R = 0.0003 (N = 1517); AK1*1 = 0.9778, AK1*2 = 0.0213, AK1*3 = 0.0009 (N = 1081); ALAD*1 = 0.9094, ALAD*2 = 0.0906 (N = 1043).
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489
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Rocha J. Money for Indians' health remains unused. West J Med 1994. [DOI: 10.1136/bmj.308.6936.1059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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490
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491
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Rocha J. Child sugar cane cutters exploited in Brazil. West J Med 1994. [DOI: 10.1136/bmj.308.6935.1000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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492
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Rocha J. Brazil fights to save biodiversity. West J Med 1994. [DOI: 10.1136/bmj.308.6921.75c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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493
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Couto AR, Trovão CN, Rocha J, Cavaleiro AMV, de Jesus JDP. Dalton communication. Solid-state nuclear magnetic resonance studies on the co-ordination geometry of boron in polyoxotungstates. ACTA ACUST UNITED AC 1994. [DOI: 10.1039/dt9940002585] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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494
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Lourenco J, Ribeiro' M, Ribeiro F, Rocha J, Gabelica Z, Dumont N, Derouane E. Study of Catalytic Properties of SAPO-40. ACTA ACUST UNITED AC 1994. [DOI: 10.1016/s0167-2991(08)64092-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/03/2023]
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495
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Anderson MW, Terasaki O, Ohsuna T, Philippou A, MacKay SP, Ferreira A, Rocha J, Lidin S. Structure of the microporous titanosilicate ETS-10. Nature 1994. [DOI: 10.1038/367347a0] [Citation(s) in RCA: 444] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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496
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Rocha J, Santos E, de Jesus JD, Duarte AC. High-field 13C solid-state NMR studies of stream humic and fulvic acids with fast magic-angle spinning. SOLID STATE NUCLEAR MAGNETIC RESONANCE 1993; 2:191-195. [PMID: 7827970 DOI: 10.1016/0926-2040(93)90024-h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Standard samples of stream humic and fulvic acids have been studied by high-resolution 13C solid-state NMR. The spectra have been recorded at a high (9.4 T) magnetic field using 1H-13C cross-polarization (CP) and proton high-power decoupling (HPDEC) with fast (up to 15 kHz) magic-angle spinning (MAS). The widths of the spectral lines decrease with increasing spinning rate. This is probably due to the overlap of spinning sidebands with resonances at low speeds and to a more effective averaging of anisotropic broadening at high speeds. However, fast MAS modulates the CP signal intensities, making quantitative analysis very difficult.
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497
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Monteiro L, Almeida-Pinto J, Rocha N, Lopes G, Rocha J. Case report: cyclosporin A-induced neurotoxicity. Br J Radiol 1993; 66:271-2. [PMID: 8472124 DOI: 10.1259/0007-1285-66-783-271] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
Acute encephalopathy is a recognized toxic effect of Cyclosporin A (CsA) in organ transplantation recipients. A 16-year-old girl presented with acute encephalopathy 2 weeks after CsA and methylprednisolone medication for idiopathic uveitis. Magnetic resonance imaging showed cortical and white matter occipital changes, which were not visible 2 months later. With expanding indication for CsA use, an increasing number of neurotoxic cases are to be expected.
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498
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Rocha J, Amorim A, Luckenbach C, Kömpf J, Ritter H. Subtyping of alkylated human orosomucoid: evidence for a duplicated gene, ORM1*F2S. Electrophoresis 1993; 14:235-7. [PMID: 8486136 DOI: 10.1002/elps.1150140138] [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: 01/31/2023]
Abstract
Isoelectric focusing of human orosomucoid (ORM) was studied following different sample treatment. It is shown that: (i) alkylation with iodoacetamide leads to a drastic change in the isoelectric point (pI) of both ORM1 F2 and ORM2 A gene products and greatly improves the discrimination between ORM1 F1 and ORM1 F2; (ii) previous reduction of the molecule with dithiothreitol partially inhibits the pI transitions with resultant artifactual ORM1 F1F2S patterns that correspond in most cases to F2S phenotypes. With the technique now described, the persistence of three ORM1 gene products was found in only one individual and the segregation analysis is consistent with the existence of a rare ORM1*F2S haplotype.
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499
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Rocha J, Kolodziejski W, Gameson I, Klinowski J. Reversible Tieftemperatur-Strukturumwandlung in hydratisiertem, porösem Aluminiumphosphat VPI-5: Festkörper-NMR-spektroskopische und röntgenographische Untersuchungen. Angew Chem Int Ed Engl 1992. [DOI: 10.1002/ange.19921040517] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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500
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Rocha J, Kolodziejski W, Gameson I, Klinowski J. Solid-State NMR Spectroscopic and X-Ray Diffraction Studies of the Low-Temperature Structural Transformation of Hydrated Porous Aluminophosphate VPI-5. Angew Chem Int Ed Engl 1992. [DOI: 10.1002/anie.199206101] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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