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Lacroix D, Chaput Y, Rodriguez JP, Filion M, Morrison D, St-Denis P, Albert JM. Quantified EEG changes associated with a positive clinical response to clozapine in schizophrenia. Prog Neuropsychopharmacol Biol Psychiatry 1995; 19:861-76. [PMID: 8539424 DOI: 10.1016/0278-5846(95)00116-d] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
1. The authors conducted a retrospective exploratory computerized EEG study on the effect of clozapine in treatment-refractory schizophrenics, 10 high-responders (HRs) and 10 low-responders (LRs), in an attempt to correlate amplitude but especially coherence changes with a positive clinical response to clozapine. 2. EEGs with eyes closed were obtained before and during a clozapine treatment. Both groups had a similar drug profile with regards to non-clozapine medication. Probability maps were computed to illustrate changes of amplitude and coherence (for all combinations of paired electrodes) for 4 frequency bands (theta, alpha, beta 1 and 2). 3. The effect on AMPLITUDE was a generalized increase in lower bands and a decrease in anterior regions in higher bands of both HRs and LRs. Considerable changes of COHERENCE were observed on a wide set of paired electrodes in most frequency bands with some electrodes involved in HRs but uninvolved or differently involved in LRs suggesting differences in selected brain regions. 4. Changes of coherence but not amplitude were correlated with changes on the BPRS, thus to clinical improvement, and concerned mostly the right anterior-medial temporal (T4) and central (C4) electrodes paired with prefrontal electrodes, left central (C3), temporal (T3) and parietal (P3) electrodes in the theta band. 5. Clozapine has both generalized and regional effects as can be suspected considering its effect on many subtypes of brain receptors. A brain dysfunction centralized on the right anterior-medial temporal region may characterize treatment-refractory schizophrenics.
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Rodriguez JP. Thermal properties of gauge fields common to anyon superconductors and spin liquids. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 51:9348-9351. [PMID: 9977585 DOI: 10.1103/physrevb.51.9348] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Rodriguez JP, Bonca J, Ferrer J. Random frustration in a two-dimensional spin-1/2 Heisenberg antiferromagnet. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 51:3616-3619. [PMID: 9979173 DOI: 10.1103/physrevb.51.3616] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Wu TM, Rodriguez JP, Fink DJ, Carrino DA, Blackwell J, Caplan AI, Heuer AH. Crystallization studies on avian eggshell membranes: implications for the molecular factors controlling eggshell formation. Matrix Biol 1995; 14:507-13. [PMID: 7795889 DOI: 10.1016/0945-053x(95)90008-x] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The avian eggshell is a natural biopolymer and mineral composite. It is a very useful model for biomimetic mineralization, since it is among the fastest forming hard tissues known. Isolated eggshell membranes, which were demineralized in vitro, were used to investigate the in vitro modulation of CaCO3 crystal deposition by organic matrix materials. Crystallization on the demineralized eggshell membrane occurred almost exclusively at the peripheries of residual calcium reserve assemblies, which contain a high concentration of sulfur. Similar structures are observed for eggshell membranes after natural demineralization. The characteristic rhombohedral crystal morphologies of the calcite crystals grown in this in vitro system are much less regular when grown in the presence of organic matrix or partially purified dermatan sulfate proteoglycans obtained from the eggshell. The effect of these macromolecules on the morphology and size of CaCO3 crystals is concentration-dependent. These studies indicate the complexity of the molecular and ionic interactions involved in the initiation and formation of the eggshell, with the focus on the role of the organic matrix.
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Rodriguez JP. Observable zero sound in strongly correlated metals. PHYSICAL REVIEW LETTERS 1994; 73:1675-1678. [PMID: 10056855 DOI: 10.1103/physrevlett.73.1675] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Bonca J, Rodriguez JP, Ferrer J, Bedell KS. Direct calculation of spin stiffness for spin-1/2 Heisenberg models. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 50:3415-3418. [PMID: 9976600 DOI: 10.1103/physrevb.50.3415] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Rodriguez JP. Berezinskii-Kosterlitz-Thouless transition in a spin-charge-separated superconductor. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 49:9831-9845. [PMID: 10009783 DOI: 10.1103/physrevb.49.9831] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Lacerda A, Rodriguez JP, Hundley MF, Fisk Z, Canfield PC, Thompson JD, Cheong SW. Magnetoresistance in the normal state of La1.925Sr0.075CuO4+ delta. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 49:9097-9102. [PMID: 10009691 DOI: 10.1103/physrevb.49.9097] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Rodriguez JP. Spin-charge-separated superconductivity: The two-component Abelian-Higgs model. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 49:3663-3666. [PMID: 10011251 DOI: 10.1103/physrevb.49.3663] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Rodriguez JP, Lederer P. Strongly correlated two-dimensional electrons in the overdoped limit. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 48:16051-16055. [PMID: 10008166 DOI: 10.1103/physrevb.48.16051] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Rodriguez JP. Superconductivity in a strongly interacting two-dimensional electron liquid: Gap structure. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 47:5508-5511. [PMID: 10006732 DOI: 10.1103/physrevb.47.5508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Rodriguez JP, Minguell JJ. Membrane-associated proteoglycans produced by Sertoli cells are not randomly distributed on the cell surface. Eur J Cell Biol 1992; 59:348-51. [PMID: 1493800] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Sertoli cells in culture synthesize two membrane-associated proteoglycans (PGs) containing as glycosaminoglycan (GAG) moieties either chondroitin sulfate (CS) or CS and heparan sulfate (HS); the latter PG is, therefore, referred to as the mixed PG. To determine if these PGs are randomly distributed on the cell surface, Sertoli cell monolayers were treated with chondroitinase ABC, and then the remaining PGs were analyzed by DEAE-Sephacel chromatography. The results obtained with Sertoli cell monolayers show that the CS of the mixed PG is degraded by chondroitinase, while the CS-PG is not degraded. In contrast, chondroitinase treatment of Sertoli cells in suspension shows that both the mixed PG and the CS-PG are degraded. From this, it is inferred that the mixed PG is apically oriented and the CS-PG is basolaterally oriented. Studies of the adhesion of germ cells to Sertoli cell monolayers give further support to the apical location of the mixed PG and suggest that its HS moiety is involved in the attachment of germ cells to Sertoli cells.
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Valdizán JR, Vergara JM, Rodriguez JP, Guallar A, Garcia C. Nocturnal prolactin and growth hormone levels in children with complex partial and generalized tonic-clonic seizures. Acta Neurol Scand 1992; 86:139-41. [PMID: 1414223 DOI: 10.1111/j.1600-0404.1992.tb05055.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
This study measures whether there is a rise in the secretion of nocturnal prolactin and growth hormone (GH), during the delta phase of the first sleep cycle in children who are suffering from either complex partial or generalized tonic-clonic seizures. The findings are compared with those obtained in the control group of patients which is made up who suffer from pseudoseizures. There is a moderate but significant rise in the nocturnal prolactin plasma level in both types of infantile seizures. No significant difference was found in the GH.
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Lederer P, Rodriguez JP. de Haas-van Alphen effect in a strongly correlated electron gas. PHYSICAL REVIEW. B, CONDENSED MATTER 1992; 46:1220-1223. [PMID: 10003319 DOI: 10.1103/physrevb.46.1220] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Rodriguez JP. Magnetoresistance in a strongly interacting two-dimensional metal. PHYSICAL REVIEW. B, CONDENSED MATTER 1992; 46:591-594. [PMID: 10002266 DOI: 10.1103/physrevb.46.591] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Rodriguez JP. Erratum: Low-temperature properties of the metallic phase of the t-J model in two dimensions. PHYSICAL REVIEW. B, CONDENSED MATTER 1992; 45:5119. [PMID: 10021566 DOI: 10.1103/physrevb.45.5119.2] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Rodriguez JP, Douçot B. Comment on "Parity violation and superconductivity in two-dimensional correlated electronic systems". PHYSICAL REVIEW LETTERS 1992; 68:724. [PMID: 10045975 DOI: 10.1103/physrevlett.68.724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Rodriguez JP, Douçot B. Superconductivity, Faraday effect, and optical absorption in the commensurate flux phase of the t-J model. PHYSICAL REVIEW. B, CONDENSED MATTER 1992; 45:971-981. [PMID: 10001140 DOI: 10.1103/physrevb.45.971] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Rodriguez JP. Low-temperature properties of the metallic phase of the t-J model in two dimensions. PHYSICAL REVIEW. B, CONDENSED MATTER 1991; 44:9582-9595. [PMID: 9998943 DOI: 10.1103/physrevb.44.9582] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Ponomar E, Carlson JE, Kindlund A, Rodriguez JP, Castaneda-Zuniga WR, Hunter DW, Yedlicka JW, Amplatz K. Clot-trapper device for transjugular thrombectomy from the inferior vena cava. Radiology 1991; 179:279-82. [PMID: 2006292 DOI: 10.1148/radiology.179.1.2006292] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The clot-trapper device for transjugular thrombectomy was used in 10 dogs with acute thrombosis and two dogs with chronic thrombosis. In eight of these animals, the clots were trapped with the clot-trapper device, then a mechanical thrombectomy device was used to destroy the clots. In 10 animals, including eight with in vitro thrombi and two with in situ thrombi, thrombi were efficiently trapped with the clot-trapper device. In two animals, pulmonary embolism occurred because of a discrepancy between the diameter of the inferior vena cava and the diameter of the bag opening. After increasing the size of the loop to match the diameter of the inferior vena cava, trapping of all thrombi was possible in both experiments (acute and chronic thrombosis). The clot-trapper device, in conjunction with an embolectomy balloon catheter and/or a mechanical thrombectomy device, facilitates the removal of thrombi from the inferior vena cava and iliac veins.
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Rodriguez JP, Fernández M, Minguell JJ. Interstitial collagen synthesis by somatic testicular cells in culture. Cell Biochem Funct 1991; 9:63-7. [PMID: 2065437 DOI: 10.1002/cbf.290090110] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The synthesis, distribution and types of collagen produced by somatic testicular cells in culture was studied. To investigate whether changes in collagen synthesis correlate with the age of the animal, cultures derived from immature and pubertal rats were established. Immature rats synthesize 40 per cent more collagen than pubertal rats. Both groups of animals synthesize procollagen types I and III. Pro-collagen type I is present in the culture medium as well as in the cell fraction, while type III is only detected in the culture medium. In the transition from immature to pubertal rat, the ratio of procollagen type III to procollagen type I diminishes from 5.7 to 1.7. These results indicate that the synthesis, distribution and molecular characteristics of interstitial collagens changes with the age of the animal. Since, the content of other extracellular matrix components such as proteoglycans and collagen type IV also varies with age, we postulate that the composition of the extracellular matrix in the testes is not constant but changes with sexual development.
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Rodriguez JP, Douçot B. Electromagnetic response of generalized flux phases in the t-J model. PHYSICAL REVIEW. B, CONDENSED MATTER 1990; 42:8724-8727. [PMID: 9995074 DOI: 10.1103/physrevb.42.8724] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Rodriguez JP. Effect of topological excitations in the two-dimensional quantum Heisenberg antiferromagnet. PHYSICAL REVIEW. B, CONDENSED MATTER 1990; 41:7326-7329. [PMID: 9993020 DOI: 10.1103/physrevb.41.7326] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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49
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Rodriguez JP. Quantized topological point defects in two-dimensional antiferromagnets. PHYSICAL REVIEW. B, CONDENSED MATTER 1989; 39:2906-2909. [PMID: 9948575 DOI: 10.1103/physrevb.39.2906] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Rodriguez JP. Hydrodynamic description of collective modes in heavy-fermion superconductors. PHYSICAL REVIEW. B, CONDENSED MATTER 1987; 36:168-179. [PMID: 9942036 DOI: 10.1103/physrevb.36.168] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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