domoic-acid has been researched along with Learning-Disabilities* in 2 studies
1 review(s) available for domoic-acid and Learning-Disabilities
| Article | Year |
|---|---|
Intrauterine environment-genome interaction and children's development (2): Brain structure impairment and behavioral disturbance induced in male mice offspring by a single intraperitoneal administration of domoic acid (DA) to their dams.
To demonstrate induction of delayed central nervous toxicity by disturbing neuronal activities in the developing brain, we administered a single intraperitoneal dose of domoic acid (DA; 1 mg/kg), a potent glutamate receptor agonist, to pregnant female mice at the gestational day of 11.5, 14.5 or 17.5. The dams had recovered from acute symptoms within 24 hr, followed by normal delivery, feeding and weaning. All male offspring mice after weaning were apparently normal in response to handlers during cage maintenance, body weight measurement and to mate mice in group housing conditions. At the age of 11 weeks, our neurobehavior testing battery revealed severe impairment of learning and memory with serious deviances of anxiety-related behaviors. The developed brain of prenatally exposed mice showed myelination failure and the overgrowth of neuronal processes of the limbic cortex neurons. This study indicates that the temporal disturbance of neurotransmission of the developing brain induces irreversible structural and functional damage to offspring which becomes monitorable in their adulthood by a proper battery of neurobehavioral tests. Topics: Animals; Anxiety Disorders; Brain; Brain Damage, Chronic; Demyelinating Diseases; Excitatory Amino Acid Agonists; Female; Injections, Intraperitoneal; Kainic Acid; Learning Disabilities; Male; Memory Disorders; Mice; Mice, Inbred C57BL; Morphogenesis; Pregnancy; Prenatal Exposure Delayed Effects; Synaptic Transmission | 2009 |
1 other study(ies) available for domoic-acid and Learning-Disabilities
| Article | Year |
|---|---|
[The ameliorating effects of a novel NC-1900 on impairments of learning/memory caused by glutamic acid].
The effects of a novel vasopressin fragment analog NC-1900 (pGlu-Asn-Ser-Pro-Arg-Gly-NH2 acetate) were studied on learning and/or memory impairment in passive avoidance task and on cell damage of cultured cerebro-cortical neurocytes induced by glutamic acid. A small dose of NC-1900 (1 ng/kg, s.c.) ameliorated impairments of learning and/or memory induced by intracisternal injection of 467.6 micrograms of 10 microliters glutamic acid. NC-1900 also ameliorated the impairments induced by intracisternal NMDA, AMPA-antagonist CNQX and by metabotropic receptor (mGluR1) agonist 3,5-dihydroxyphenylglycine but not by kainate agonist domoic acid nor MK-801 in mice. NC-1900 (100 pM, 1nM) ameliorated the cell damage of cultured rat cerebro-cortical neurocytes induced by 100 and 1000 microM of glutamic acid. These results suggest that NC-1900 may serve as a remedies in various patients with certain brain disorders induced by excess glutamic acid. Topics: 6-Cyano-7-nitroquinoxaline-2,3-dione; Animals; Arginine Vasopressin; Avoidance Learning; Dizocilpine Maleate; Excitatory Amino Acid Antagonists; Glutamic Acid; Glycine; Kainic Acid; Learning Disabilities; Male; Memory Disorders; Mice; Mice, Inbred Strains; N-Methylaspartate; Neuromuscular Depolarizing Agents; Oligopeptides; Pyrrolidonecarboxylic Acid; Rats; Rats, Sprague-Dawley; Resorcinols | 1999 |