PMID- 2124580 OWN - NLM STAT- MEDLINE DCOM- 19910207 LR - 20190510 IS - 0021-8812 (Print) IS - 0021-8812 (Linking) VI - 68 IP - 11 DP - 1990 Nov TI - Active immunization of beef heifers against luteinizing hormone: II. Evaluation of conjugation technique on antigenicity of LH. PG - 3747-54 AB - This study evaluated the antigenicity of LH-ovalbumin complexes produced using different conjugation techniques. Two homobifunctional cross-linkers, glutaraldehyde (Glut) and carbodiimide (ECDI), were evaluated together with one heterobifunctional reagent, m-maleimido-benzoyl N-hydroxysuccinimide ester (MBS). Polyacrylamide gel electrophoresis and Western transfer techniques were used to confirm conjugation of LH. Forty-four beef heifers were assigned randomly to seven treatment groups. Two groups of heifers were immunized against glutaraldehyde conjugates (Glut-I and Glut-II), two against MBS conjugates (MBS-I and MBS-II) and one against a carbodiimide conjugate (ECDI). Control animals were immunized against nonconjugated LH (LH-only) or ovalbumin alone (Oval). Heifers received one primary injection of antigen followed by two boosters at a 3-wk interval. The Glut conjugates induced the highest (P less than .05) LH antibody activity (Glut-II, 18 +/- 4%; Glut-I, 14 +/- 4%). The ECDI (11 +/- 4%), and MBS-I (11 +/- 2%) conjugates induced greater LH binding than MBS-II (4 +/- 1%), LH-only (4 +/- 1%) or Oval (2 +/- 1%). Glutaraldehyde produced an LH-ovalbumin conjugate of greater LH immunogenicity than either ECDI or the heterobifunctional reagent, MBS. FAU - Grieger, D M AU - Grieger DM AD - Washington State University, Pullman 99164-6332. FAU - Reeves, J J AU - Reeves JJ LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - J Anim Sci JT - Journal of animal science JID - 8003002 RN - 0 (Cross-Linking Reagents) RN - 0 (Indicators and Reagents) RN - 0 (Succinimides) RN - 420-04-2 (Cyanamide) RN - 58626-38-3 (3-maleimidobenzoyl N-hydroxysuccinimide) RN - 9002-67-9 (Luteinizing Hormone) RN - 9006-59-1 (Ovalbumin) RN - T3C89M417N (Glutaral) SB - IM MH - Animals MH - Antibody Formation MH - Blotting, Western MH - Cattle/*immunology MH - *Cross-Linking Reagents MH - Cyanamide MH - Electrophoresis, Polyacrylamide Gel MH - Female MH - Glutaral MH - Immunization/*veterinary MH - Indicators and Reagents MH - Luteinizing Hormone/*immunology MH - Ovalbumin/*immunology MH - Random Allocation MH - Succinimides EDAT- 1990/11/01 00:00 MHDA- 1990/11/01 00:01 CRDT- 1990/11/01 00:00 PHST- 1990/11/01 00:00 [pubmed] PHST- 1990/11/01 00:01 [medline] PHST- 1990/11/01 00:00 [entrez] AID - 10.2527/1990.68113747x [doi] PST - ppublish SO - J Anim Sci. 1990 Nov;68(11):3747-54. doi: 10.2527/1990.68113747x.