526
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Vincent C, Revillard JP. [Plasma concentrations and urinary excretion of beta2 microglobulin after renal transplantation (author's transl)]. PATHOLOGIE-BIOLOGIE 1978; 26:307-11. [PMID: 83570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
beta2-Microglobulin (beta2m)levels were measured daily after transplantation in 44 recipients of renal allograft. beta2m was measured by radioimmunoassay. After transplantation, serum beta2m becomes inferior to 4 micrograms/ml within 4 days whereas urinary beta2m decreases down to 0,5 microgram/ml within 6 days. A correlation between serum creatinine and serumbeta2m is presented and a few dissociations between the 2 values are discussed. Picks of urinary beta2m concentrations were observed either before (22/30 cases) or concomitant (16/30 cases) with rejection episodes. However, a few patients presented massive urinary excretion of beta2m without development of a typical rejection. This study allows to define two types of renal alterations after transplantation : one associated with renal insufficiency and elevated serum beta2m, the other with proximal tubular dysfonction resulting in massive (up to 700 mg/24 h) urinary excretion of beta2m.
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527
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Vincent C, Revillard JP, Traeger J. [Alteration of beta2-microglobulin metabolism in terminal chronic renal insufficiency (author's transl)]. PATHOLOGIE-BIOLOGIE 1978; 26:303-6. [PMID: 83569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
In 63 patients with chronic renal insufficiency treated with intermittent dialysis plasma beta2m concentrations were shown to be stable and increased 8 to 60 times over normal values. The excretion of beta2m is achieved either through residual diuresis (up to 150 mg/24 h) or by filtration through high permeability membranes of the dialyser. In the absence of extra-renal catabolism of beta2m it is suggested that the rate of beta2m synthesis differs markedly among patients. beta2m it self does not to seem to contribute to the toxic manifestations of chronic renal insufficiency.
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528
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Revillard JP, Vincent C. [Beta 2 microglobulin in pathology. Introduction]. PATHOLOGIE-BIOLOGIE 1978; 26:279-81. [PMID: 83565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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529
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Abstract
Our purpose being to work out a "continuous flow" enzymatic reactor of acetylation with a cofactor, we present here some results about the immobilization of coenzyme A on T40 dextran. Two methods of fixation are compared with regard to the capacity and the biological activity of the polymers thus obtained.
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530
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Vincent C, Revillard JP, Galland M, Traeger J. Serum beta2-microglobulin in hemodialyzed patients. Nephron Clin Pract 1978; 21:260-8. [PMID: 82208 DOI: 10.1159/000181402] [Citation(s) in RCA: 123] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
beta2-Microglobulin (beta2-M) concentrations were measured by radioimmunoassay in 63 patients treated with maintenance hemodialysis. Serum levels ranged from 12.5 to 92 microgram/ml and were found stable upon sequential measurements over a 6-month period. Excretion of beta2-M was achieved through urinary loss (up to 150 mg/day) and to a lesser extent by ultrafiltration across acrylopolynitrile but not cellophane dialysis membranes. Proximal tubular cells being the major site of beta2-M catabolism, stable levels in anephric patients indicated a defective production of beta2-M in uremic patients. Serum beta2-M levels were not correlated with predialysis urea, creatinine, hematocrit or middle molecule material. In vitro experiments do not support a possible toxicity of purified beta2-M but do not rule out the contribution of other low molecular weight proteins to uremic toxicity.
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531
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Vincent C, Revillard JP. [Determination of circulating immune complexes: comparison between agglutination inhibition and C1Q precipitation in polyethylene-glycol-EDTA (author's transl)]. PATHOLOGIE-BIOLOGIE 1978; 26:73-9. [PMID: 99716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Three different methods for the determination of circulating immune complexes were compared : precipitation of radioiodinated C1q in polyethyleneglycol-EDTA, inhibition of IgG-coated latex particles agglutination by C1q or polyclonal rheumatoid factor. Normal values and their upper limits as well as the reproducibility of each technique are presented. The possible effect of several factors was investigated : age, sex, anticoagulants, freezing and thawing, contamination by DNA or endotoxin. Comparison of the results obtained with normal or pathological sera revealed a positive correlation between the three techniques. However, the discrepancies noted with some sera make the use of at least two different methods highly recommendable for the study of circulating immune complexes in disease.
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532
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Vincent C, Revillard JP. Antibody response to horse gamma-globulin in recipients of renal allografts: relationship with transplant crises and transplant survival. Transplantation 1977; 24:141-7. [PMID: 70872 DOI: 10.1097/00007890-197708000-00008] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Anti-antilymphocyte globulin (ALG) antibody response was measured every day during and after ALG treatment in 52 recipients of renal allografts. IgM antibodies became detectable in 37 patients, usually at day 8 and IgG antibodies appeared 3 days after the IgM in 21 of 37 cases. Of 30 transplant crises recorded between days 6 and 11, 20 coincided with the onset of the antibody response, and the incidence of crises during this period was higher among antibody producers than among nonproducers. In 31 patients a partial or total unresponsiveness to ALG could be achieved. Transplant survival at 3 months was better in this group than among good responders (P less than 0.01). Anti-ALG antibody response may then be usable as an early indication of individual differences in reactivity against transplant antigens.
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533
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Revillard JP, Vincent C. [Beta 2 microglobulin]. LA NOUVELLE PRESSE MEDICALE 1976; 5:2707-12. [PMID: 63940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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534
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Garrett A, Manuel D, Vincent C. Conceptual framework. THE JOURNAL OF NURSING EDUCATION 1976; 15:9-21. [PMID: 10357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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535
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Abstract
HLA antigens were purified from urines of kidney transplanted patients, HLA was recovered as a single peak of 45,000 mol wt that was dissociated into beta2-microglobulin and a 33,000 mol wt fraction bearing the allospecificity. The purified fractions contain carbohydrates but no lipids. Electrophoretical mobility and the relative salt concentration of eluting buffers in DEAE-Sephadex chromatography were determined for six antigens of the A locus and seven antigens of the B locus. Isolectric points of antigens A1, A2, A9, and B12 were measured. Physiochemical characteristics of HLA purified from urine appear to be similar to those of papain-solubilized cell membrane HLA. Urinary HLA was shown to originate from serum and not from renal or ureteric tissue.
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536
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Boutin J, Valiquette J, Vincent C. [The challenge of chronicity]. L' INFIRMIERE CANADIENNE 1976; 18:18-21. [PMID: 1046402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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537
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Lebar R, Boutry JM, Vincent C, Robineaux R, Voisin GA. Studies on autoimmune encephalomyelitis in the guinea pig. II. An in vitro investigation on the nature, properties, and specificity of the serum-demyelinating factor. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 1976; 116:1439-46. [PMID: 58035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Complement-dependent demyelinating activity of whole brain homogenate (WBH)-induced experimental allergic encephalomyelitis (EAE) sera was tested on long term tissue cultures of in vitro myelinated fetal guinea pig cerebellum. Complement-fixing (CF) auto-antibodies were shown to be the responsible agents, as demonstrated in experiments where all reagents belonged to the same species: guinea pigs of outbred (Hartley) and even of inbred (S2 or S13) strains. These antibodies were of the IgG2 class as shown by Sephadex G-200 and DEAE cellulose fractionation experiments. The corresponding auto-antigen was present in the homogenate and myelin of the central nervous system (CNS) tissue. It was different from the encephalitogenic basic protein of CNS myelin (BP), as shown in experiments where the demyelinating auto-antibodies were induced, detected, and absorbed by WBH or by CNS myelin but not by BP. They were neither induced by nor cross-reacting with cerebroside and peripheral nervous system (PNS) tissue.
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538
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Vincent C, Revillard JP. Comparison of radio-immunoassay and lymphocytotoxicity inhibition techniques for the determination of beta2 microglobulin. J Immunol Methods 1976; 10:253-9. [PMID: 58939 DOI: 10.1016/0022-1759(76)90175-7] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Rabbit anti-human beta2 microglobulin antisera can lyse human lymphocytes in the presence of rabbit complement. Inhibition of the lymphocytotoxic reaction by highly purified beta2m was applied to the measurement of beta2m concentration in biological fluids. Parallel determinations were also performed using a radioimmunoassay. Lymphocytotoxicity inhibition is simple and more sensitive than radial immunodiffusion but less sensitive than the radioimmunoassay. beta2m was measured by these two techniques in serum and urine from normal individuals, uremic or transplanted patients.
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539
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Robert M, Vincent C, Arnaud P, Revillard JP. Fate of antibodies bound to lymphocyte surface. II.--Degradation and release of immune complexes. ANNALES D'IMMUNOLOGIE 1976; 127:145-61. [PMID: 938000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The fate of horse anti-human lymphocyte globulins, rabbit anti-human beta2 microglobulin antibodies and anti-HL-A alloantibodies radiolabelled with 125I and complexed to their corresponding lymphocyte surface antigens, was investigated. During prolonged incubation at 37 degrees C, part of these antibodies were actively released into the surrounding medium after enzymatic degradation occuring either intracellularly or at the cell surface. Metabolism of the antibodies was temperature-dependent and involved only antibodies able to react with antigens on the cell surface. Sephadex G200 filtration of the small percentage of non dialysable radioactive products in the supernatant revealed that all the 125I-anti-human lymphocyte globulin was recovered as a macromolecular structure in the void volume. Similar experiments were performed with 51Cr labelled lymphocytes coated with anti-lymphocyte globulins: treatment with anti-horse immunoglobulin precipitated part of 51Cr activity in the void volume which was therefore associated with anti-human lymphocyte globulin as an immune complex. The same protocol applied to the other two antibodies studied showed that anti-beta2 microglobulin antibodies were recovered both as macromolecular and 7 S immune complexes, whereas anti-HL-A antibodies were recovered as macromolecular, 7 S and still smaller immune complexes.
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540
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Vincent C, Robert M, Revillard JP. Effects of anti-beta-2 microglobulin antibodies on human lymphocytes. Cell Immunol 1975; 18:152-66. [PMID: 49221 DOI: 10.1016/0008-8749(75)90044-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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541
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Robert M, Vincent C, Revillard JP. Presence of HL-A antigens and beta2-microglobulin in tubular proteinuria. Transplantation 1974; 18:89-91. [PMID: 4837431 DOI: 10.1097/00007890-197407000-00017] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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542
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Robert M, Vincent C, Revillard JP. [HL-A antigens and beta-2-microglobulin in urine]. COMPTES RENDUS HEBDOMADAIRES DES SEANCES DE L'ACADEMIE DES SCIENCES. SERIE D: SCIENCES NATURELLES 1974; 278:2237-40. [PMID: 4137417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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543
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Revillard JP, Vincent C, Leclerc M, Manuel Y. Human migration inhibition factor: a preliminary report. Transplant Proc 1972; 4:243-5. [PMID: 4624528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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544
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Vincent C, Revillard JP. [Inhibition of guinea pig peritoneal migration human lymphocytes stimulated with antilymphocyte serum]. COMPTES RENDUS HEBDOMADAIRES DES SEANCES DE L'ACADEMIE DES SCIENCES. SERIE D: SCIENCES NATURELLES 1971; 273:2736-9. [PMID: 5003784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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545
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Cohen J, Vincent C. [Clinical aspects of abortion due to genetic causes studies in fifty-two cases]. ACTA EUROPAEA FERTILITATIS 1970; 2:405-25. [PMID: 5538330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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546
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Cohen J, Henry-Suchet J, Merger R, Vincent C. [Estrogenic insufficiency and genetic abortions]. BULLETIN DE LA FEDERATION DES SOCIETES DE GYNECOLOGIE ET DOBSTETRIQUE DE LANGUE FRANCAISE 1970; 22:439-42. [PMID: 5533510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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547
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Boué JG, Cohen J, Henry-Suchet J, Merger R, Vincent C. [Clinical and biological study of 16 cases of spontaneous abortion due to chromosome aberration]. LA PRESSE MEDICALE 1968; 76:1717-20. [PMID: 5686205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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548
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549
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Vincent C. THE DIRECT OR BREED METHOD FOR COUNTING BACTERIA IN TOMATO CATSUP, PULP OR PASTE. J Bacteriol 1918; 3:183-5. [PMID: 16558785 PMCID: PMC378750 DOI: 10.1128/jb.3.2.183-185.1918] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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