Decreased toxicity of dimethylnitrosamine in rats after treatment with carbon tetrachloride

A. W. Pound, Lorraine Horn, T. A. Lawson

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

A non-lethal dose of carbon tetrachloride (CCI4), that produced necrosis in the liver followed by regeneration, protected rats from the toxic effects of dimethylnitrosamine (DMN), for a period lasting between 48 and 60 h. At 42 h, when DNA synthesis was at a maximum, the LD50of DMN was increased from 27.2 to 42.5 mg/kg. After CCI4, the level of DMN-demethylase in the liver fell sharply by 6 h, maintained a low level for a period lasting between 42 and 60 h, and returned to normal by 72 h. No change occurred in the level of the DMN-demethylase in the kidney. When DMN was given 42 h after CCI4, the acute cellular changes and necrosis usually produced were not superimposed on the lesions produced by the CCI4 but when the interval was 60 h, acute necrosis was again produced in the liver. On the other hand the minor degree of necrosis in the distal convoluted tubules of the kidneys produced by DMN was much increased when it was administered 42 h after a dose of CCI4 but not when given after 60 h.

Original languageEnglish (US)
Pages (from-to)233-242
Number of pages10
JournalPathology
Volume5
Issue number3
DOIs
StatePublished - Jul 1973

Fingerprint

Dimethylnitrosamine
Carbon Tetrachloride
Necrosis
Distal Kidney Tubule
Liver Regeneration
Poisons
Liver
Kidney
DNA

ASJC Scopus subject areas

  • Pathology and Forensic Medicine

Cite this

Decreased toxicity of dimethylnitrosamine in rats after treatment with carbon tetrachloride. / Pound, A. W.; Horn, Lorraine; Lawson, T. A.

In: Pathology, Vol. 5, No. 3, 07.1973, p. 233-242.

Research output: Contribution to journalArticle

Pound, A. W. ; Horn, Lorraine ; Lawson, T. A. / Decreased toxicity of dimethylnitrosamine in rats after treatment with carbon tetrachloride. In: Pathology. 1973 ; Vol. 5, No. 3. pp. 233-242.
@article{070bc41fc8df47518c70a5d7dcf5a72d,
title = "Decreased toxicity of dimethylnitrosamine in rats after treatment with carbon tetrachloride",
abstract = "A non-lethal dose of carbon tetrachloride (CCI4), that produced necrosis in the liver followed by regeneration, protected rats from the toxic effects of dimethylnitrosamine (DMN), for a period lasting between 48 and 60 h. At 42 h, when DNA synthesis was at a maximum, the LD50of DMN was increased from 27.2 to 42.5 mg/kg. After CCI4, the level of DMN-demethylase in the liver fell sharply by 6 h, maintained a low level for a period lasting between 42 and 60 h, and returned to normal by 72 h. No change occurred in the level of the DMN-demethylase in the kidney. When DMN was given 42 h after CCI4, the acute cellular changes and necrosis usually produced were not superimposed on the lesions produced by the CCI4 but when the interval was 60 h, acute necrosis was again produced in the liver. On the other hand the minor degree of necrosis in the distal convoluted tubules of the kidneys produced by DMN was much increased when it was administered 42 h after a dose of CCI4 but not when given after 60 h.",
author = "Pound, {A. W.} and Lorraine Horn and Lawson, {T. A.}",
year = "1973",
month = "7",
doi = "10.3109/00313027309060840",
language = "English (US)",
volume = "5",
pages = "233--242",
journal = "Pathology",
issn = "0031-3025",
publisher = "Lippincott Williams and Wilkins",
number = "3",

}

TY - JOUR

T1 - Decreased toxicity of dimethylnitrosamine in rats after treatment with carbon tetrachloride

AU - Pound, A. W.

AU - Horn, Lorraine

AU - Lawson, T. A.

PY - 1973/7

Y1 - 1973/7

N2 - A non-lethal dose of carbon tetrachloride (CCI4), that produced necrosis in the liver followed by regeneration, protected rats from the toxic effects of dimethylnitrosamine (DMN), for a period lasting between 48 and 60 h. At 42 h, when DNA synthesis was at a maximum, the LD50of DMN was increased from 27.2 to 42.5 mg/kg. After CCI4, the level of DMN-demethylase in the liver fell sharply by 6 h, maintained a low level for a period lasting between 42 and 60 h, and returned to normal by 72 h. No change occurred in the level of the DMN-demethylase in the kidney. When DMN was given 42 h after CCI4, the acute cellular changes and necrosis usually produced were not superimposed on the lesions produced by the CCI4 but when the interval was 60 h, acute necrosis was again produced in the liver. On the other hand the minor degree of necrosis in the distal convoluted tubules of the kidneys produced by DMN was much increased when it was administered 42 h after a dose of CCI4 but not when given after 60 h.

AB - A non-lethal dose of carbon tetrachloride (CCI4), that produced necrosis in the liver followed by regeneration, protected rats from the toxic effects of dimethylnitrosamine (DMN), for a period lasting between 48 and 60 h. At 42 h, when DNA synthesis was at a maximum, the LD50of DMN was increased from 27.2 to 42.5 mg/kg. After CCI4, the level of DMN-demethylase in the liver fell sharply by 6 h, maintained a low level for a period lasting between 42 and 60 h, and returned to normal by 72 h. No change occurred in the level of the DMN-demethylase in the kidney. When DMN was given 42 h after CCI4, the acute cellular changes and necrosis usually produced were not superimposed on the lesions produced by the CCI4 but when the interval was 60 h, acute necrosis was again produced in the liver. On the other hand the minor degree of necrosis in the distal convoluted tubules of the kidneys produced by DMN was much increased when it was administered 42 h after a dose of CCI4 but not when given after 60 h.

UR - http://www.scopus.com/inward/record.url?scp=0015843174&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0015843174&partnerID=8YFLogxK

U2 - 10.3109/00313027309060840

DO - 10.3109/00313027309060840

M3 - Article

C2 - 4748059

AN - SCOPUS:0015843174

VL - 5

SP - 233

EP - 242

JO - Pathology

JF - Pathology

SN - 0031-3025

IS - 3

ER -