Glutaraldehyde (GA)-hapten adducts, but without a carrier protein, for use in a specificity study on an antibody against a GA-conjugated hapten compound: histamine monoclonal antibody (AHA-2) as a model.

Glutaraldehyde (GA)-hapten adducts, but without a carrier protein, for use in a specificity study on an antibody against a GA-conjugated hapten compound: histamine monoclonal antibody (AHA-2) as a model. Research Abstract Details 

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Glutaraldehyde (GA)-hapten adducts, but without a carrier protein, for use in a specificity study on an antibody against a GA-conjugated hapten compound: histamine monoclonal antibody (AHA-2) as a model. Abstract Text:

K Fujiwara,I Murata,S Yagisawa,T Tanabe,M Yabuuchi,R Sakakibara,D Tsuru,

In our recent study on monoclonal antibodies (mAbs AHA-1-5) against glutaraldehyde (GA)-conjugated histamine (HA), we identified one mAb (AHA-2) which can detect neuronal HA in the rat brain with an immunocytochemistry method (ICC) [Fujiwara et al. (1999) J. Biochem. 126, 503-509]. In the present study the specificity of AHA-2 mAb for use for ICC has been examined by means of competitive experiments involving HA and analogs, all of which had been allowed to react with GA followed by sodium borohydride, but not allowed to couple with the carrier protein. It was demonstrated that the antibody distinguished alterations in the chemical structure of the molecule, showing decreased immunoreactivity with all the GA-adducts of (R)-(-)-alpha-methylhistamine, 1- and 3-methylhistamine, L-histidine, and 1- and 3-methyl-L-histidine. On the other hand, AHA-1 mAb only reacted with GA-adducts of 3-MeHA (3-MeHA-GA) and HA (HA-GA), to almost the same degree, in relatively high concentration ranges. AHA-3, 4, and 5 mAbs reacted about 10-times more strongly with 1-MeHA-GA than with HA-GA, but reacted very little or not at all with the other analogs. These results may suggest that AHA-2 mAb recognized both the non-substituted imidazole and alpha-methine groups of a HA molecule in addition to the conjugation site of GA including the part(s) reduced with NaBH(4), and especially the imidazole group more strictly than the other mAbs. This may partly explain why AHA-2, among the five AHA mAbs, can detect neuronal HA with an ICC method. The present ELISA method for GA-hapten adducts should be applicable to other antibodies against GA-conjugated biologically active amines or amino acids, thus allowing the study of antibody specificity for ICC more easily and accurately than was previously possible with hapten-protein conjugates as antigens.

Glutaraldehyde (GA)-hapten adducts, but without a carrier protein, for use in a specificity study on an antibody against a GA-conjugated hapten compound: histamine monoclonal antibody (AHA-2) as a model. Publishing Authors By Initials

K Fujiwara,I Murata,S Yagisawa,T Tanabe,M Yabuuchi,R Sakakibara,D Tsuru,

For similar animals: chordata: vertebrates: mammals: rodentia: muridae: murinae: rats research abstracts see: animals: chordata: vertebrates: mammals: rodentia: muridae: murinae: rats research

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Glutaraldehyde (GA)-hapten adducts, but without a carrier protein, for use in a specificity study on an antibody against a GA-conjugated hapten compound: histamine monoclonal antibody (AHA-2) as a model. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Journal of biochemistry

VOLUME: 126

Page Numbers: 1170-4

Journal Abbreviation: J. Biochem.

ISSN: 0021-924X

DAY: 19

MONTH: Dec

YEAR: 1999

Glutaraldehyde (GA)-hapten adducts, but without a carrier protein, for use in a specificity study on an antibody against a GA-conjugated hapten compound: histamine monoclonal antibody (AHA-2) as a model. Information

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LANGUAGE: eng

NlmUniqueID: 376600

Glutaraldehyde (GA)-hapten adducts, but without a carrier protein, for use in a specificity study on an antibody against a GA-conjugated hapten compound: histamine monoclonal antibody (AHA-2) as a model. Keywords Mesh Terms:

KEYWORDS: Rats

MESH TERMS: immunology

Chemical & Substance for Abstract: Glutaraldehyde (GA)-hapten adducts, but without a carrier protein, for use in a specificity study on an antibody against a GA-conjugated hapten compound: histamine monoclonal antibody (AHA-2) as a model. Information

Substance Name: Histamine

Registry Number: 51-45-6

Grant and Affiliation Information for Glutaraldehyde (GA)-hapten adducts, but without a carrier protein, for use in a specificity study on an antibody against a GA-conjugated hapten compound: histamine monoclonal antibody (AHA-2) as a model.

AFFILIATION: Faculty of Pharmaceutical Sciences, Nagasaki University, Nagasaki, 852-8131, Japan. fujiwara@net.nagasaki-u.ac.jp

Country: JAPAN

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MEDLINETA: J Biochem

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