Medicine and Health Sciences Commons^™

Co-Sensitization Of Dopamine And Serotonin Receptors Occurs In The Absence Of A Change In The Dopamine D1 Receptor Complex After A Neonatal 6-Ohda Lesion, Li Gong

Electronic Theses and Dissertations

To test whether SKF 38393 could ontogenetically sensitize dopamine (DA) D$\sb1$ receptors and whether this sensitization would be associated with biochemical changes, intact and neonatal 6-hydroxydopamine (6-OHDA)-lesioned rats (200 $\mu$g i.c.v.) were treated daily from birth with SKF 38393 (3.0 mg/kg i.p. x 28 days) or its vehicle. In DA D$\sb1$ neonatally sensitized 6-OHDA rats, enhanced locomotor responses were observed with the first SKF 38393 challenge dose (3.0 mg/kg i.p.) at 6 weeks. This response increased further with weekly SKF 38393 treatments. Enhanced stereotyped behaviors were seen in both lesioned and sensitized rats at 8 weeks. There was no change …

Signal Processing With Neural Networks, Pero Smrzlic

Masters Theses

In this study, we introduce the Adaptive Back Propagation (ABP) learning algorithm, computationally superior to the standard Back Propagation. The ABP is based on the new activation function, with its corresponding adaptive learning parameter. By using the combination of computer simulations and analysis in the domain of activation function, the Method of One Hidden layer was developed for the effective utilization of units in one-hidden layer networks. A parallel version of the ABP was designed and implemented on a nCUBE-2 supercomputer with 128 processors.

The simulation results suggested a strong correlation between frequency of signals and the role of hidden …

Persistent Emotional Disorder In Children With Neurological Soft Signs, Daniel Pine, David Shaffer, Irvin Sam Schonfeld

Publications and Research

Provides clinical details in the form of 11 case vignettes from a prospective epidemiological study that found the combination of childhood 'soft' signs and anxious behavior to be a strong risk factor for adolescent emotional disorders. The original study conducted a neuropsychiatric assessment of 180 African-American adolescents (aged 16–18 yrs) who had been followed through childhood. The at-risk Ss exhibited a persistent and specific pattern of both motor abnormalities and anxiety, obsessional compulsive, or depressive symptoms over time. The form of at-risk Ss' neurological and psychiatric abnormalities is consistent with a link between motor system abnormalities and …

Molecular Characterization Of Neurotransmitter Transporters, Saad Shafqat, M Velaz- Faircloth, A Guadaño- -Ferraz, R T Fremeau

Section of Neurology

No abstract provided.

Cloning And Expression Of A Novel Na(+)-Dependent Neutral Amino Acid Transporter Structurally Related To Mammalian Na+/Glutamate Cotransporters, Saad Shafqat, Balaji Tamarappoo, Michael S Kilberg, Ram S Puranam, James O. Mcnamara, Ana Guadaño -Ferraz, R.T. Fremeau

Section of Neurology

A cDNA has been isolated from human hippocampus that appears to encode a novel Na(+)-dependent, Cl(-)-independent, neutral amino acid transporter. The putative protein, designated SATT, is 529 amino acids long and exhibits significant amino acid sequence identity (39-44%) with mammalian L-glutamate transporters. Expression of SATT cDNA in HeLa cells induced stereospecific uptake of L-serine, L-alanine, and L-threonine that was not inhibited by excess (3 mM) 2-(methylamino)-isobutyric acid, a specific substrate for the System A amino acid transporter. SATT expression in HeLa cells did not induce the transport of radiolabeled L-cysteine, L-glutamate, or related dicarboxylates. Northern blot hybridization revealed high levels …