Alterations in the activities of three dehydrogenases in the digestive system of two teleost fishes exposed to mercuric chloride
The effect of the 50% lethal concentration and of a sublethal concentration (0.3 mg/liter) of mercuric chloride on the activities of succinic, lactic, and pyruvic dehydrogenases in the digestive system of two teleost fishes, Ophiocephalus punctatus and Heteropneustes fossilis, respectively, has been studied at intervals of 96 h and 7, 15, and 30 days. The results show that dehydrogenases are not affected much by short-term exposure. However, the activities of all three enzymes are inhibited by chronic exposure to mercury and maximum inhibition is observed after 15 days of exposure. Among the different parts of the digestive system, the liver is the most affected organ, and of the two fishes, Heteropneustes is more sensitive to mercury treatment.
- Research Organization:
- School of Environmental Contamination and Toxicology, Muzaffarnagar, India
- OSTI ID:
- 6537249
- Journal Information:
- Environ. Res.; (United States), Vol. 24:1
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ENZYME ACTIVITY
INHIBITION
FISHES
SENSITIVITY
MERCURY CHLORIDES
TOXICITY
CHRONIC EXPOSURE
DIGESTIVE SYSTEM
LETHAL DOSES
LIVER
OXIDOREDUCTASES
TIME DEPENDENCE
ANIMALS
AQUATIC ORGANISMS
BODY
CHLORIDES
CHLORINE COMPOUNDS
DOSES
ENZYMES
GLANDS
HALIDES
HALOGEN COMPOUNDS
MERCURY COMPOUNDS
MERCURY HALIDES
ORGANS
VERTEBRATES
560305* - Chemicals Metabolism & Toxicology- Vertebrates- (-1987)