John M Cassel

Learn More
Repeated exposure to cocaine alters the structural and functional properties of medium spiny neurons (MSNs) in the nucleus accumbens (NAc). These changes suggest a rewiring of the NAc circuit, with an enhancement of excitatory synaptic connections onto MSNs. However, it is unknown how drug exposure alters the balance of long-range afferents onto different(More)
We found that medium spiny neurons (MSNs) in both the direct and indirect pathways of the mouse nucleus accumbens (NAc) receive inputs from the cortex, thalamus and hippocampus. However, hippocampal inputs were much weaker onto indirect MSNs, where they contacted small spines located in the distal dendrites. This selective targeting means that these inputs(More)
We have synthesized a set of four energy transfer dyes and demonstrated their use in automated DNA sequencing. The donor dyes are the 5- or 6-carboxy isomers of 4'-aminomethylfluorescein and the acceptor dyes are a novel set of four 4,7-dichloro-substituted rhodamine dyes which have narrower emission spectra than the standard, unsubstituted rhodamines. A(More)
Chemical bonding between dental porcelains and alloys results from interdiffusion of porcelain and metal ions. An interfacial diffusion zone is created which, most likely, has properties different from those of bulk materials. The changed interface might affect experimental measurements of thermo-mechanical strain. To determine the magnitude and conditions(More)
Two recent articles in the British Journal of Plastic Surgery have served to explain the anatomy of the blood vessels serving the latissimus dorsi muscle. A theory was presented with a supporting case in which the superficial surface of the muscle was thinned acutely during a reconstruction, with full survival. A case complication is presented in which an(More)
  • 1