Acute hematopoietic toxicity of aniline in rats

M Khan, Xiaohong Wu, Bhupendra Kaphalia, Paul J. Boor, Ghulam Ansari

Research output: Contribution to journalArticle

41 Citations (Scopus)

Abstract

In the present study, acute hematopoietic toxicity of aniline as a function of time was investigated in rats. The animals were given a single oral dose of aniline hydrochloride (2 mmol/kg) and euthanized at zero (control), 0.25, 0.5, 1, 3, 6, 12, 24 and 48 h following the treatment. The blood methemoglobin level increased dramatically and attained a peak level of 37% (31 fold greater than the controls) at 0.5 h. Thereafter, the increases were less pronounced and the level declined with time. Spleen weight to body weight ratio remained unchanged up to 24 h, but increased ~25% at 48 h. Lipid peroxidation (MDA content) in the spleen increased by 39% at 24 h and remained steady even at 48 h. MDA-protein adducts, as quantitated by a competitive ELISA, showed 94, 126 and 265% increases in the spleen homogenates at 12, 24 and 48 h, respectively, following the treatment. However, no changes were observed in the splenic protein oxidation. Morphological examination showed congestion of splenic blood vessels and marked expansion of red pulp at 24 and 48 h. These studies suggest that aniline related changes in the blood are reflected very early as evident from increases in the methemoglobin content, whereas changes in the spleen appear later and are characterized by splenic weight changes, increased lipid peroxidation, MDA-protein adduct formation and morphological changes after a single high dose exposure. The increased lipid peroxidation in the spleen also suggests that free radical-mediated reactions could be the potential mechanism of splenic toxicity of aniline and lipid peroxidation precedes protein oxidation.

Original languageEnglish (US)
Pages (from-to)31-37
Number of pages7
JournalToxicology Letters
Volume92
Issue number1
DOIs
StatePublished - 1997

Fingerprint

Toxicity
Rats
Spleen
Lipid Peroxidation
Lipids
Methemoglobin
Proteins
Blood
Free radical reactions
Oxidation
Blood vessels
Weights and Measures
Pulp
Animals
Free Radicals
Blood Vessels
Enzyme-Linked Immunosorbent Assay
Body Weight
aniline
Therapeutics

Keywords

  • Acute toxicity
  • Aniline
  • Lipid peroxidation
  • MDA-protein adducts
  • Methemoglobin
  • Spleen

ASJC Scopus subject areas

  • Toxicology

Cite this

Acute hematopoietic toxicity of aniline in rats. / Khan, M; Wu, Xiaohong; Kaphalia, Bhupendra; Boor, Paul J.; Ansari, Ghulam.

In: Toxicology Letters, Vol. 92, No. 1, 1997, p. 31-37.

Research output: Contribution to journalArticle

Khan, M ; Wu, Xiaohong ; Kaphalia, Bhupendra ; Boor, Paul J. ; Ansari, Ghulam. / Acute hematopoietic toxicity of aniline in rats. In: Toxicology Letters. 1997 ; Vol. 92, No. 1. pp. 31-37.
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