Neurotoxicity of lanthanum chloride in newborn chicks

Area of Science:

• Neuroscience
• Toxicology
• Biochemistry

Background:

• Lanthanum chloride is a rare earth metal with known biological effects.
• Calcium ions play a critical role in neuronal function and signaling.
• Enzymes like Ca2+-ATPase, Mg2+-ATPase, and cholinesterase are vital for neural activity.

Purpose of the Study:

• To investigate the effects of acute lanthanum chloride administration on calcium binding to brain synaptosomal membranes in newborn chicks.
• To assess the impact of lanthanum chloride intoxication on the activity of key neural enzymes.

Main Methods:

• Acute intraperitoneal injection of lanthanum chloride (250 mg/kg body weight) in newborn chicks.
• Measurement of calcium binding to brain synaptosomal membranes.
• Assay of neural Ca2+-ATPase, Mg2+-ATPase, and cholinesterase activities.

Main Results:

• Lanthanum chloride administration significantly inhibited calcium binding to brain synaptosomal membranes.
• Marked depression in the activities of neural Ca2+-ATPase, Mg2+-ATPase, and cholinesterase was observed.
• A correlation between enzyme inhibition and reduced calcium binding was suggested.

Conclusions:

• Acute lanthanum chloride intoxication impairs calcium homeostasis in the developing brain.
• The observed inhibition of neural enzymes is linked to the disruption of calcium binding.
• Further research is warranted to understand the long-term neurological consequences.