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Antibody Synthesis in Vitro (PDF Download Available)

T1 - Non-specific factor enhancement of human in vitro antigen-dependent antibody synthesis

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Antibody synthesis in vitro, a marker of B cell differentiation

An enzyme-linked immunosorbent assay was used to detect antibody to specific bacterial lipopolysaccharide (LPS) in serum and in pokeweed mitogen (PWM) stimulated culture supernatants of peripheral blood mononuclear cells from four patients with alcoholic cirrhosis (AC). Antibody to LPS (derived from a single strain of Escherichia coli isolated from each patient's stool), was detected in the sera of each patient to a 10-4 dilution. Only one of four control sera was positive at the 10-4 dilution, with the others positive at a 10-4 dilution, with the others positive at a 10-3 dilution. Antibody to LPS was detected in the culture supernatants in three of the four patients and in one of the control subjects. Supernatants from patient cultures pretreated with mitomycin C or harvested after 1 day of incubation did not have detectable antibody. These results indicate that we can expand, in vitro, the population, of peripheral blood B lymphocytes obtained from patients with AC and cause them to synthesize antibody against specific LPS from their own gut flora.

Antibody Synthesis In Vitro. Antoni Iborra 1, Paz Martínez 2, José Ramón Palacio 2

AB - In vitro anti-DNA antibody synthesis by peripheral blood lymphocytes from systemic lupus erythematosus (SLE) patients after native DNA (nDNA) stimulation was studied by the Farr assay after digestion with deoxyribonuclease I. Active SLE lymphocytes synthetized IgG and anti-DNA antibody with nDNA stimulation but inactive SLE and normal lymphocytes did not. Binding of 14C-labeled Ig and [3H]DNA showed that DNA-binding Ig was actively secreted by SLE lymphocytes. SLE antilymphocyte antibody (ALA)-sensitive T cells (SLE+ T cells) and unreactive T cells (SLE- T cells) were separated by anti-human Ig antibody-coated dishes to determine their effect on antibody synthesis. Inactive SLE B cells synthetized both IgG and anti-DNA antibody after nDNA stimulation with autologous SLE- T cells but stimulation with SLE+ T cells did not result in synthesis of either. Normal B cells did not synthetize IgG even with autologous SLE- T cells. These results indicate that active and inactive SLE patients have autoreactive lymphocytes against nDNA which synthetize anti-DNA antibody and are regulated by ALA-sensitive T cells (possibly deficient in active SLE).

Review article ANTIBODY SYNTHESIS IN VITRO, ..

T1 - STUDIES ON IN VITRO ANTIBODY PRODUCTION. II. THE EFFECT OF NEWCASTLE DISEASE VIRUS ON ANTIBODY SYNTHESIS.

Intravenous γ-globulin (IVGG) effectively elevates the platelet count of most patients with chronic idiopathic thrombocytopenic purpura (ITP). This study examined whether this effect was related to changes in in vitro immunoglobulin secretion and suppression in coculture. Before treatment, patient in vitro immunoglobulin secretion was less than 50% of the concurrent control in all eight cases and the patients suppressed antibody synthesis in coculture an average of 39%. After treatment, increases in in vitro immunoglobulin secretion and decreases in suppression were closely related to a good response to IVGG therapy as measured both by acute increases in the platelet count (P3. T-cell numbers and subsets and lymphocyte proliferation were unaffected by IVGG. IVGG tends to normalize in vitro immunoglobulin secretion and its suppression in those ITP patients with good clinical responses in conjunction with decreased levels of autoantibody. This evidence suggests that good responders to IVGG may have inhibition of antiplatelet antibody production. IVGG does not appear to interfere with normal antibody production.

T1 - Correlation of in vitro antibody synthesis with the outcome of intravenous γ-globulin treatment of chronic idiopathic thrombocytopenic purpura

Antibody Synthesis in Vitro - Antigen-Antibody …

N2 - Intravenous γ-globulin (IVGG) effectively elevates the platelet count of most patients with chronic idiopathic thrombocytopenic purpura (ITP). This study examined whether this effect was related to changes in in vitro immunoglobulin secretion and suppression in coculture. Before treatment, patient in vitro immunoglobulin secretion was less than 50% of the concurrent control in all eight cases and the patients suppressed antibody synthesis in coculture an average of 39%. After treatment, increases in in vitro immunoglobulin secretion and decreases in suppression were closely related to a good response to IVGG therapy as measured both by acute increases in the platelet count (P

AB - Intravenous γ-globulin (IVGG) effectively elevates the platelet count of most patients with chronic idiopathic thrombocytopenic purpura (ITP). This study examined whether this effect was related to changes in in vitro immunoglobulin secretion and suppression in coculture. Before treatment, patient in vitro immunoglobulin secretion was less than 50% of the concurrent control in all eight cases and the patients suppressed antibody synthesis in coculture an average of 39%. After treatment, increases in in vitro immunoglobulin secretion and decreases in suppression were closely related to a good response to IVGG therapy as measured both by acute increases in the platelet count (P

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  • Specific antibody synthesis in vitro

    T1 - In vitro anti-DNA antibody synthesis by peripheral blood lymphocytes in patients with systemic lupus erythematosus

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    Antibody Production in Man: In Vitro Synthesis and Clinical Implications eBook: Anthony S

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    Antibody synthesis in vitro

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Primary Anti-protein Antibody Synthesis elicited in vitro

The present report presents evidence for the in vitrosynthesis of antibody by the vagina of the rabbit after the vagina wasexposed directly to the antigen in vivo.

Antibody Protein Synthesis in Vitro

AB - An enzyme-linked immunosorbent assay was used to detect antibody to specific bacterial lipopolysaccharide (LPS) in serum and in pokeweed mitogen (PWM) stimulated culture supernatants of peripheral blood mononuclear cells from four patients with alcoholic cirrhosis (AC). Antibody to LPS (derived from a single strain of Escherichia coli isolated from each patient's stool), was detected in the sera of each patient to a 10-4 dilution. Only one of four control sera was positive at the 10-4 dilution, with the others positive at a 10-4 dilution, with the others positive at a 10-3 dilution. Antibody to LPS was detected in the culture supernatants in three of the four patients and in one of the control subjects. Supernatants from patient cultures pretreated with mitomycin C or harvested after 1 day of incubation did not have detectable antibody. These results indicate that we can expand, in vitro, the population, of peripheral blood B lymphocytes obtained from patients with AC and cause them to synthesize antibody against specific LPS from their own gut flora.

Antibody Synthesis in vitro by the Rabbit Vagina …

In vitro anti-DNA antibody synthesis by peripheral blood lymphocytes from systemic lupus erythematosus (SLE) patients after native DNA (nDNA) stimulation was studied by the Farr assay after digestion with deoxyribonuclease I. Active SLE lymphocytes synthetized IgG and anti-DNA antibody with nDNA stimulation but inactive SLE and normal lymphocytes did not. Binding of 14C-labeled Ig and [3H]DNA showed that DNA-binding Ig was actively secreted by SLE lymphocytes. SLE antilymphocyte antibody (ALA)-sensitive T cells (SLE+ T cells) and unreactive T cells (SLE- T cells) were separated by anti-human Ig antibody-coated dishes to determine their effect on antibody synthesis. Inactive SLE B cells synthetized both IgG and anti-DNA antibody after nDNA stimulation with autologous SLE- T cells but stimulation with SLE+ T cells did not result in synthesis of either. Normal B cells did not synthetize IgG even with autologous SLE- T cells. These results indicate that active and inactive SLE patients have autoreactive lymphocytes against nDNA which synthetize anti-DNA antibody and are regulated by ALA-sensitive T cells (possibly deficient in active SLE).

In vitro IgM antibody synthesis by human tonsil …

N2 - In vitro anti-DNA antibody synthesis by peripheral blood lymphocytes from systemic lupus erythematosus (SLE) patients after native DNA (nDNA) stimulation was studied by the Farr assay after digestion with deoxyribonuclease I. Active SLE lymphocytes synthetized IgG and anti-DNA antibody with nDNA stimulation but inactive SLE and normal lymphocytes did not. Binding of 14C-labeled Ig and [3H]DNA showed that DNA-binding Ig was actively secreted by SLE lymphocytes. SLE antilymphocyte antibody (ALA)-sensitive T cells (SLE+ T cells) and unreactive T cells (SLE- T cells) were separated by anti-human Ig antibody-coated dishes to determine their effect on antibody synthesis. Inactive SLE B cells synthetized both IgG and anti-DNA antibody after nDNA stimulation with autologous SLE- T cells but stimulation with SLE+ T cells did not result in synthesis of either. Normal B cells did not synthetize IgG even with autologous SLE- T cells. These results indicate that active and inactive SLE patients have autoreactive lymphocytes against nDNA which synthetize anti-DNA antibody and are regulated by ALA-sensitive T cells (possibly deficient in active SLE).

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