Central Nervous System Constituent
DHA is the most abundant omega-3 fatty acid in the brain and retina. DHA comprises 40% of the polyunsaturated fatty acids (PUFAs) in the brain and 60% of the PUFAs in the retina. Fifty percent of the weight of a neuron's plasma membrane is composed of DHA. DHA is richly supplied during breastfeeding, and DHA levels are high in breastmilk regardless of dietary choices.
DHA modulates the carrier-mediated transport of choline, glycine, and taurine, the function of delayed rectifier potassium channels, and the response of rhodopsin contained in the synaptic vesicles, among many other functions.
DHA deficiency is associated with cognitive decline. Phosphatidylserine (PS) controls apoptosis, and low DHA levels lower neural cell PS and increase neural cell death. DHA are reduced in the brain tissue of severely depressed patients.
Read more about this topic: Docosahexaenoic Acid
Famous quotes containing the words central, nervous and/or system:
“Sweet weight,
in celebration of the woman I am
and of the soul of the woman I am
and of the central creature and its delight
I sing for you. I dare to live.”
—Anne Sexton (1928–1974)
“He was the finest of our happy men;
He had all joys, he never thought of death;
He fiddled sometimes with his mind, and then
Shook off the tremor like a nervous wren....”
—Allen Tate (1899–1979)
“He is not a true man of science who does not bring some sympathy to his studies, and expect to learn something by behavior as well as by application. It is childish to rest in the discovery of mere coincidences, or of partial and extraneous laws. The study of geometry is a petty and idle exercise of the mind, if it is applied to no larger system than the starry one.”
—Henry David Thoreau (1817–1862)