IgG subclass distribution of anti-hCG and anti-diphtheria toxoid antibodies in women immunized with a beta-hCG based immunocontraceptive vaccine. 1994

U S Deshmukh, and G P Talwar, and S K Gupta
Gamete Antigen Laboratory, National Institute of Immunology, New Delhi, India.

IgG subclass distribution of antibodies against human chorionic gonadotropin (hCG) and diphtheria toxoid (DT) was determined in the sera of women recruited into Phase II clinical trials of a beta-hCG based immunocontraceptive vaccine. Serum samples from 30 different individuals were analyzed. Anti-hCG antibody response was predominantly of IgG1 subclass, with a mean titer of 537.94 +/- 560 antibody units (AU). The other 3 subclasses showed considerably lower mean levels (IgG2, 16.46 +/- 8.33; IgG3, 3.22 +/- 8.48; IgG4, 56.65 +/- 82.60 AU). A good correlation was observed between the anti-hCG IgG1 antibody titers (r = 0.57, P < 0.01) and the bioneutralization capacity of sera. However, bioneutralization capacity of the sera from subjects capable of inducing IgG4 response was not significantly different from subjects not showing IgG4 antibodies. Similarly, a dominant IgG1 response was observed against diphtheria toxoid (DT) which has been used as one of the carrier proteins in the vaccine.

UI MeSH Term Description Entries
D007074 Immunoglobulin G The major immunoglobulin isotype class in normal human serum. There are several isotype subclasses of IgG, for example, IgG1, IgG2A, and IgG2B. Gamma Globulin, 7S,IgG,IgG Antibody,Allerglobuline,IgG(T),IgG1,IgG2,IgG2A,IgG2B,IgG3,IgG4,Immunoglobulin GT,Polyglobin,7S Gamma Globulin,Antibody, IgG,GT, Immunoglobulin
D007114 Immunization Deliberate stimulation of the host's immune response. ACTIVE IMMUNIZATION involves administration of ANTIGENS or IMMUNOLOGIC ADJUVANTS. PASSIVE IMMUNIZATION involves administration of IMMUNE SERA or LYMPHOCYTES or their extracts (e.g., transfer factor, immune RNA) or transplantation of immunocompetent cell producing tissue (thymus or bone marrow). Immunologic Stimulation,Immunostimulation,Sensitization, Immunologic,Variolation,Immunologic Sensitization,Immunological Stimulation,Sensitization, Immunological,Stimulation, Immunologic,Immunizations,Immunological Sensitization,Immunological Sensitizations,Immunological Stimulations,Sensitizations, Immunological,Stimulation, Immunological,Stimulations, Immunological,Variolations
D010446 Peptide Fragments Partial proteins formed by partial hydrolysis of complete proteins or generated through PROTEIN ENGINEERING techniques. Peptide Fragment,Fragment, Peptide,Fragments, Peptide
D003267 Contraception Prevention of CONCEPTION by blocking fertility temporarily, or permanently (STERILIZATION, REPRODUCTIVE). Common means of reversible contraception include NATURAL FAMILY PLANNING METHODS; CONTRACEPTIVE AGENTS; or CONTRACEPTIVE DEVICES. Birth Control,Contraceptive Methods,Female Contraception,Fertility Control,Inhibition of Fertilization,Male Contraception,Contraception, Female,Contraception, Male,Contraceptions, Female,Contraceptions, Male,Contraceptive Method,Female Contraceptions,Fertilization Inhibition,Male Contraceptions
D004168 Diphtheria Toxoid The formaldehyde-inactivated toxin of Corynebacterium diphtheriae. It is generally used in mixtures with TETANUS TOXOID and PERTUSSIS VACCINE; (DTP); or with tetanus toxoid alone (DT for pediatric use and Td, which contains 5- to 10-fold less diphtheria toxoid, for other use). Diphtheria toxoid is used for the prevention of diphtheria; DIPHTHERIA ANTITOXIN is for treatment. Diphtheria Vaccine,Toxoid, Diphtheria,Vaccine, Diphtheria
D005260 Female Females
D006063 Chorionic Gonadotropin A gonadotropic glycoprotein hormone produced primarily by the PLACENTA. Similar to the pituitary LUTEINIZING HORMONE in structure and function, chorionic gonadotropin is involved in maintaining the CORPUS LUTEUM during pregnancy. CG consists of two noncovalently linked subunits, alpha and beta. Within a species, the alpha subunit is virtually identical to the alpha subunits of the three pituitary glycoprotein hormones (TSH, LH, and FSH), but the beta subunit is unique and confers its biological specificity (CHORIONIC GONADOTROPIN, BETA SUBUNIT, HUMAN). Chorionic Gonadotropin, Human,HCG (Human Chorionic Gonadotropin),Biogonadil,Choriogonadotropin,Choriogonin,Chorulon,Gonabion,Human Chorionic Gonadotropin,Pregnyl,Gonadotropin, Chorionic,Gonadotropin, Human Chorionic
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D018074 Vaccines, Conjugate Semisynthetic vaccines consisting of polysaccharide antigens from microorganisms attached to protein carrier molecules. The carrier protein is recognized by macrophages and T-cells thus enhancing immunity. Conjugate vaccines induce antibody formation in people not responsive to polysaccharide alone, induce higher levels of antibody, and show a booster response on repeated injection. Conjugate Vaccine,Conjugate Vaccines,Vaccine, Conjugate
D018997 Chorionic Gonadotropin, beta Subunit, Human The beta subunit of human CHORIONIC GONADOTROPIN. Its structure is similar to the beta subunit of LUTEINIZING HORMONE, except for the additional 30 amino acids at the carboxy end with the associated carbohydrate residues. HCG-beta is used as a diagnostic marker for early detection of pregnancy, spontaneous abortion (ABORTION, SPONTANEOUS); ECTOPIC PREGNANCY; HYDATIDIFORM MOLE; CHORIOCARCINOMA; or DOWN SYNDROME. HCG-beta,Human Chorionic Gonadotropin, beta Subunit,Chorionic Gonadotropin, beta Chain, Human,Chorionic Gonadotropin, beta Polypeptide, Human,HCG, beta Subunit,HCG beta

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