Effect of cadmium on the digestive system of the teleost fish, Heteropneustes fossilis
Journal Article
·
· Environ. Res.; (United States)
The effect of a sublethal concentration (6.8 mg/liter) of cadmium chloride on the histological structure and enzyme activities of the different parts of the alimentary tract and liver of a teleost fish, Heteropneustes fossilis, has been studied after exposure for 30 days. Liver and intestine were structurally as well as functionally the most affected portions. In the liver, connective tissue damage, liver cord disarray, enlargement and vacuolation of hepatocytes, degeneration of nuclei, accumulation of lipid, and focal necrosis were the most conspicuous changes. The erosion of mucous epithelium was noted in the stomach. In the intestine flattening and degeneration of the villi occurred and the mucus-secreting goblet cells showed hyperactivity. Three phosphatases studied showed significant inhibition in activity in the liver and intestine. An elevation in pepsin activity was recorded in the stomach but trypsin showed inhibition in the intestine. Marked inhibition was also noted in the activities of aminotripeptidase and glycylglycine dipeptidase. The results point out that cadmium produces structural damage in the digestive system and decreases the digestive efficiency by inhibiting the activity of a number of enzymes.
- Research Organization:
- D.A.V. College, Muzaffarnagar, India
- OSTI ID:
- 5518277
- Journal Information:
- Environ. Res.; (United States), Journal Name: Environ. Res.; (United States) Vol. 19:2; ISSN ENVRA
- Country of Publication:
- United States
- Language:
- English
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Effect of cadmium and zinc on intestinal absorption of xylose and tryptophan in the fresh water teleost fish, Heteropneustes fossilis
Journal Article
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Sat Dec 31 23:00:00 EST 1977
· Environ. Res.; (United States)
·
OSTI ID:6503130
In vivo effects of cadmium on some enzyme activities in tissues of the freshwater catfish, Heteropneustes fossilis
Journal Article
·
Thu Jan 31 23:00:00 EST 1985
· Environ. Res.; (United States)
·
OSTI ID:5017231
Effect of cadmium and zinc on intestinal absorption of xylose and tryptophan in the fresh water teleost fish, Heteropneustes fossilis
Journal Article
·
Sat Dec 31 23:00:00 EST 1983
· Chemosphere; (United States)
·
OSTI ID:5776022
Related Subjects
550200 -- Biochemistry
550800 -- Morphology
560305* -- Chemicals Metabolism & Toxicology-- Vertebrates-- (-1987)
59 BASIC BIOLOGICAL SCIENCES
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ANIMALS
AQUATIC ORGANISMS
BIOLOGICAL EFFECTS
BODY
CADMIUM
CATALYSIS
DATA
DATA FORMS
DIGESTIVE SYSTEM
DOSE-RESPONSE RELATIONSHIPS
ELEMENTS
ENZYMES
ESTERASES
EXPERIMENTAL DATA
FISHES
GASTROINTESTINAL TRACT
GLANDS
HYDROLASES
INFORMATION
INTESTINES
ISOLATED VALUES
LIVER
METABOLISM
METALS
MORPHOLOGICAL CHANGES
NUMERICAL DATA
ORGANS
PEPSIN
PEPTIDE HYDROLASES
PHOSPHATASES
STOMACH
TOLERANCE
TOXICITY
TRYPSIN
VERTEBRATES
550800 -- Morphology
560305* -- Chemicals Metabolism & Toxicology-- Vertebrates-- (-1987)
59 BASIC BIOLOGICAL SCIENCES
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ANIMALS
AQUATIC ORGANISMS
BIOLOGICAL EFFECTS
BODY
CADMIUM
CATALYSIS
DATA
DATA FORMS
DIGESTIVE SYSTEM
DOSE-RESPONSE RELATIONSHIPS
ELEMENTS
ENZYMES
ESTERASES
EXPERIMENTAL DATA
FISHES
GASTROINTESTINAL TRACT
GLANDS
HYDROLASES
INFORMATION
INTESTINES
ISOLATED VALUES
LIVER
METABOLISM
METALS
MORPHOLOGICAL CHANGES
NUMERICAL DATA
ORGANS
PEPSIN
PEPTIDE HYDROLASES
PHOSPHATASES
STOMACH
TOLERANCE
TOXICITY
TRYPSIN
VERTEBRATES