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Parkinson's disease is characterized not only by a progressive loss of dopaminergic neurons in the substantia nigra but also by a degeneration of locus coeruleus noradrenergic neurons. The present study addresses the question of whether a partial neurodegeneration of dopaminergic neurons using
1. The sequence of events involved in degeneration of sympathetic nerve terminals has been studied in vitro in the expansor secundariorum muscle of the chicken.2. The muscle underwent a degeneration contraction due to abrupt release of noradrenaline stores from the nerves about 18 hr after
To study if noradrenaline released from degenerating sympathetic nerves may contribute to metabolic stimulation and low blood flow in an experimental skin flap, we have determined noradrenaline levels in such skin flaps. Attempts to use radioenzymatic methodology for the determination of
The noradrenaline (NA) content and the degeneration secretion of saliva were studied in rat salivary glands, following proximal or distal sympathetic denervation. Proximal denervation was obtained by removal of the cervical superior ganglion, which left a long stump of adrenergic axons attached to
Noradrenaline (NA) was measured in postmortem cerebellar cortex of 15 patients with dominantly inherited olivopontocerebellar atrophy (OPCA). The mean cerebellar cortical NA level was significantly reduced (by 40%) in OPCA as compared with control values. The NA deficit most likely reflects a
Amylase secretion "in vitro" was used as an indication of the degeneration activity of sympathetically denervated parotid glands. Seventeen and a half hours after sympathetic denervation, slices of parotid gland released amylase into the incubation medium at a rate higher than that observed for
We have developed a model system in which rat basal forebrain cholinergic neurons degenerate progressively when maintained in culture conditions that make them susceptible to low-level oxidative stress. In this study, we showed that cholinergic neurons identified by acetylcholinesterase
Parkinson's disease (PD) is characterized by progressive loss of dopaminergic (DA) neurons in the substantia nigra. However, studies of post-mortem PD brains have shown that not only DA neurons but also the noradrenergic (NA) neurons in the locus coeruleus degenerate, and that the NA
Parkinson's disease (PD) is a neurodegenerative disease characterized by α-synuclein-positive inclusion bodies and loss of neurons, including dopaminergic neurons. Difficulty in replicating PD phenotypes using animal models partly limits the understanding of PD and the therapy required. Although PD