Lead nitrate induced changes in the thyroid physiology of the catfish Clarias batrachus (L)
Journal Article
·
· Ecotoxicol. Environ. Saf.; (United States)
Chronic exposure of Clarias batrachus to sublethal dose of 5 ppm lead nitrate for a period of 150 days impaired thyroid function. Histological observations revealed hypertrophy, increased cell height, vacuolation, and reduction of colloid. The thyrotrophs of the pituitary also exhibited hypertrophy. Radioiodine (/sup 131/I) uptake was significantly lowered. Fish exposed to 5, 10, and 25 ppm of lead nitrate for 7 days also exhibited significant reduction in /sup 131/I uptake which was dose dependent. These findings suggest that lead nitrate impairs thyroid function involving the hypothalamohypophysiothyroid axis.
- Research Organization:
- Banaras Hindu Univ., Varanasi, India
- OSTI ID:
- 6516116
- Journal Information:
- Ecotoxicol. Environ. Saf.; (United States), Journal Name: Ecotoxicol. Environ. Saf.; (United States) Vol. 1; ISSN EESAD
- Country of Publication:
- United States
- Language:
- English
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OSTI ID:6145932
Related Subjects
551001 -- Physiological Systems-- Tracer Techniques
560300* -- Chemicals Metabolism & Toxicology
59 BASIC BIOLOGICAL SCIENCES
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ANIMALS
AQUATIC ORGANISMS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BIOLOGICAL FUNCTIONS
BODY
DAYS LIVING RADIOISOTOPES
DOSE-RESPONSE RELATIONSHIPS
ELEMENTS
ENDOCRINE GLANDS
FISHES
FUNCTIONS
GLANDS
INTERMEDIATE MASS NUCLEI
IODINE 131
IODINE ISOTOPES
ISOTOPES
LEAD
LEAD COMPOUNDS
LEAD NITRATES
METALS
NITRATES
NITROGEN COMPOUNDS
NUCLEI
ODD-EVEN NUCLEI
ORGANS
OXYGEN COMPOUNDS
PATHOLOGICAL CHANGES
PITUITARY GLAND
RADIOISOTOPES
THYROID
TOXICITY
UPTAKE
VERTEBRATES
560300* -- Chemicals Metabolism & Toxicology
59 BASIC BIOLOGICAL SCIENCES
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ANIMALS
AQUATIC ORGANISMS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BIOLOGICAL FUNCTIONS
BODY
DAYS LIVING RADIOISOTOPES
DOSE-RESPONSE RELATIONSHIPS
ELEMENTS
ENDOCRINE GLANDS
FISHES
FUNCTIONS
GLANDS
INTERMEDIATE MASS NUCLEI
IODINE 131
IODINE ISOTOPES
ISOTOPES
LEAD
LEAD COMPOUNDS
LEAD NITRATES
METALS
NITRATES
NITROGEN COMPOUNDS
NUCLEI
ODD-EVEN NUCLEI
ORGANS
OXYGEN COMPOUNDS
PATHOLOGICAL CHANGES
PITUITARY GLAND
RADIOISOTOPES
THYROID
TOXICITY
UPTAKE
VERTEBRATES