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Neuroglobin (Ngb) is a member of the vertebrate globin family expressed particularly in the brain and in the retina. Ngb is concentrated in the mitochondria-containing areas of neurons, and its distribution is correlated with oxygen consumption rates. Previously we have shown that Ngb is expressed in carotid body (CB) tissues. Considering that hypoxia and aging may be linked through a series of adaptive...
Aging is characterized by a lower homeostatic capacity and the carotid body (CB) plays an important role during aging. Here, we sought to elucidate whether the aging effects on the oxygen-sensitive mechanisms in CB cells occur through a reduction of the contact surfaces in the synaptic junctions. The hypothesis was that the CB would undergo a “physiological denervation” in old age. Two groups of male...
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