B A Burkhart

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The lateral dorsal tegmental nucleus (LDT) provides ascending cholinergic projections to forebrain structures such as prefrontal cortex, septum, habenula, and thalamus, but relatively little is known of the physiology of LDT neurons. Intracellular recordings from LDT neurons in guinea pig brain slices found that most neurons fired action potentials either(More)
A mutation that produces an absolute deficiency of normal beta-major globin polypeptides has been recovered from a DBA/2J male mouse. Most mice homozygous for the deficiency survived to adulthood and reproduced but were smaller at birth than their littermates and demonstrated a hypochromic, microcytic anemia with severe anisocytosis, poikilocytosis, and(More)
Dopamine-containing neurons have been shown to make direct contact with enkephalin-like im-munoreactive neurons in the striatum of rat brain (Kubota et al., 1986). Chronic blockade of dopaminergic neurotransmission with the neuro-leptic drug haloperidol has been reported to increase the striatal concentration of methionine-enkephalin and proenkephalin mRNA(More)
We have investigated the effect of dopamine receptor blockade on striatal proenkephalin mRNA and protachykinin mRNA by Northern gel analysis and by in situ hybridization histochemistry. Chronic haloperidol treatment resulted in a 3.5 fold increase in striatal proenkephalin mRNA and a 30% decrease in protachykinin mRNA (no apparent change in alpha-tubulin(More)
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