The effect of prolonged feeding of ortho-aminoazotoluene on binding to cellular constituents in mouse liver

T. A. Lawson

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

(1) The binding of a single oral dose of [3H]o-aminoazotoluene ([3H]o-AAT) to liver DNA, RNA and protein was examined in female C57 mice which had previously been fed unlabelled o-AAT in the diet for 2-8 weeks. A rapid decline in the level of binding of labelled material to DNA occurred during the first 2 weeks but thereafter the binding remained at a constant level. Binding to protein did not alter significantly during the experiment but there was a continual gradual decline in the binding of labelled material to RNA. (2) Examination of liver DNA, RNA and protein up to 84 days after a single dose of [3H]o-AAT showed that radioactivity associated with protein could no longer be detected after 28 days whereas thai in DNA and RNA was present at 84 days. These results suggest either the existence of a long-lived species of RNA or that o-AAT stabilises a species of mouse-liver RNA. (3) Chronic feeding of o-AAT in the diet for 4 weeks reduced the incorporation of [3H]uridine into liver RNA compared with that in untreated mice, although no alteration in the rate of breakdown of RNA was found.

Original languageEnglish (US)
Pages (from-to)9-16
Number of pages8
JournalChemico-Biological Interactions
Volume2
Issue number1
DOIs
StatePublished - Jun 1970

Fingerprint

o-Aminoazotoluene
Liver
RNA
DNA
Nutrition
Proteins
Diet
Uridine
Radioactivity
Dosimetry
Carrier Proteins

ASJC Scopus subject areas

  • Toxicology

Cite this

The effect of prolonged feeding of ortho-aminoazotoluene on binding to cellular constituents in mouse liver. / Lawson, T. A.

In: Chemico-Biological Interactions, Vol. 2, No. 1, 06.1970, p. 9-16.

Research output: Contribution to journalArticle

@article{1e9fcb812f59475f99f70bcdccd54381,
title = "The effect of prolonged feeding of ortho-aminoazotoluene on binding to cellular constituents in mouse liver",
abstract = "(1) The binding of a single oral dose of [3H]o-aminoazotoluene ([3H]o-AAT) to liver DNA, RNA and protein was examined in female C57 mice which had previously been fed unlabelled o-AAT in the diet for 2-8 weeks. A rapid decline in the level of binding of labelled material to DNA occurred during the first 2 weeks but thereafter the binding remained at a constant level. Binding to protein did not alter significantly during the experiment but there was a continual gradual decline in the binding of labelled material to RNA. (2) Examination of liver DNA, RNA and protein up to 84 days after a single dose of [3H]o-AAT showed that radioactivity associated with protein could no longer be detected after 28 days whereas thai in DNA and RNA was present at 84 days. These results suggest either the existence of a long-lived species of RNA or that o-AAT stabilises a species of mouse-liver RNA. (3) Chronic feeding of o-AAT in the diet for 4 weeks reduced the incorporation of [3H]uridine into liver RNA compared with that in untreated mice, although no alteration in the rate of breakdown of RNA was found.",
author = "Lawson, {T. A.}",
year = "1970",
month = "6",
doi = "10.1016/0009-2797(70)90033-5",
language = "English (US)",
volume = "2",
pages = "9--16",
journal = "Chemico-Biological Interactions",
issn = "0009-2797",
publisher = "Elsevier Ireland Ltd",
number = "1",

}

TY - JOUR

T1 - The effect of prolonged feeding of ortho-aminoazotoluene on binding to cellular constituents in mouse liver

AU - Lawson, T. A.

PY - 1970/6

Y1 - 1970/6

N2 - (1) The binding of a single oral dose of [3H]o-aminoazotoluene ([3H]o-AAT) to liver DNA, RNA and protein was examined in female C57 mice which had previously been fed unlabelled o-AAT in the diet for 2-8 weeks. A rapid decline in the level of binding of labelled material to DNA occurred during the first 2 weeks but thereafter the binding remained at a constant level. Binding to protein did not alter significantly during the experiment but there was a continual gradual decline in the binding of labelled material to RNA. (2) Examination of liver DNA, RNA and protein up to 84 days after a single dose of [3H]o-AAT showed that radioactivity associated with protein could no longer be detected after 28 days whereas thai in DNA and RNA was present at 84 days. These results suggest either the existence of a long-lived species of RNA or that o-AAT stabilises a species of mouse-liver RNA. (3) Chronic feeding of o-AAT in the diet for 4 weeks reduced the incorporation of [3H]uridine into liver RNA compared with that in untreated mice, although no alteration in the rate of breakdown of RNA was found.

AB - (1) The binding of a single oral dose of [3H]o-aminoazotoluene ([3H]o-AAT) to liver DNA, RNA and protein was examined in female C57 mice which had previously been fed unlabelled o-AAT in the diet for 2-8 weeks. A rapid decline in the level of binding of labelled material to DNA occurred during the first 2 weeks but thereafter the binding remained at a constant level. Binding to protein did not alter significantly during the experiment but there was a continual gradual decline in the binding of labelled material to RNA. (2) Examination of liver DNA, RNA and protein up to 84 days after a single dose of [3H]o-AAT showed that radioactivity associated with protein could no longer be detected after 28 days whereas thai in DNA and RNA was present at 84 days. These results suggest either the existence of a long-lived species of RNA or that o-AAT stabilises a species of mouse-liver RNA. (3) Chronic feeding of o-AAT in the diet for 4 weeks reduced the incorporation of [3H]uridine into liver RNA compared with that in untreated mice, although no alteration in the rate of breakdown of RNA was found.

UR - http://www.scopus.com/inward/record.url?scp=0014794460&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0014794460&partnerID=8YFLogxK

U2 - 10.1016/0009-2797(70)90033-5

DO - 10.1016/0009-2797(70)90033-5

M3 - Article

C2 - 5524010

AN - SCOPUS:0014794460

VL - 2

SP - 9

EP - 16

JO - Chemico-Biological Interactions

JF - Chemico-Biological Interactions

SN - 0009-2797

IS - 1

ER -