* The work described in this paper was sponsored by the U.S. Atomic Energy Commission. t On leave of absence from the Department of Biochemistry, University College, London. 1 Rabin, B. R., and P. W. Trown, these PROCEEDINGS, 51, 497 (1964). 2 Ellman, G. L., Arch. Biochem. Biophys., 82, 70 (1959). 3Rabin, B. R., D. F. Shaw, N. G. Pon, J. M. Anderson, and M. Calvin, J. Am. Chem. Soc., 80, 2528 (...

Alzheimer᾽s disease is characterized by cognitive deficits, impaired long-term potentiation of learning and memory. A progressive reduction in cholinergic neurons in some areas of the brain such as cortex and hippocampus is related to the deficits in memory and cognitive function in Alzheimer's disease (AD). In the current project a new series of phthalimide derivatives were synthesized. Phthal...

PURPOSE The aim of this study was to investigate acetylcholinesterase (AChE), butyrylcholinesterase (BChE) and antityrosinase activities of extracts from ten Piper species namely; P. caninum, P. lanatum, P. abbreviatum, P. aborescens, P. porphyrophyllum, P. erecticaule, P. ribesioides, P. miniatum, P. stylosum, and P. majusculum. METHODS Anticholinesterase and antityrosinase activities were e...

Certain observations have been reported according to which complications in association with gold therapy in rheumatoid arthritis would seem to be inversely proportional to the erythrocyte sedimentation rate (Goldie, 1939; Ellman and others, 1940; Lawrence, 1953). This has been explained on the basis that a high E.S.R. is generally seen in the active exudative stage of the disease, and that the...

Besides cold-steel and laser instruments, the use of radiofrequency (RF) devices in transoral microsurgery is getting increasing popularity mainly due to its minimal thermal effect on the collateral soft tissue. Authors summarize their surgical technique, results, and experience gained with RF applied during laryngeal interventions at the Department of Otorhinolaryngology, Head and Neck Surgery...

Acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) are the key enzymes in pathogenesis of Alzheimer's disease (AD), which is characterized by a deficit in central cholinergic transmission. In the current study, AChE and BChE inhibitory activities of seven coumarin derivatives [umbelliferone (1), 4-methylumbelliferone (2), 4-hydroxycoumarin (3), scopoletin (4), 8-methoxypsoralen (5), b...

Though the association between pulmonary fibrosis and scleroderma has been recognized for over 60 years (Finlay, 1891), it is only within the last decade that cyst formation has been recognized as a possible part of the lung condition, following the detailed description by Getzowa (1945) of the morbid anatomy and histology of two fatal cases. Since then a considerable literature has arisen. Som...

BACKGROUND Radiofrequency surgery is a method of utilizing high frequency (3.8 to 4MHz) radio wave energy to incise, excise, or coagulate tissues. Radiofrequency (RF) is a relatively new modality that is being used for ano-rectal surgeries with increasing frequency. As the RF energy is applied, frictional heating of tissues results, with cell death occurring at temperatures between 60 and 100 d...

A polymer-assisted solution-phase (PASP) synthesis of lead structure analogues ready for biological testing without the demand for chromatographic purification is described. Carboxylic acids are coupled to the Kenner or Ellman safety catch linker, respectively, activated by methylation or cyanomethylation and subsequently transferred to the 2'-amino group of the 2'-amino-2'-deoxyadenosine scaff...

OF THE DISSERTATION The Use of Arti cial Intelligence to Improve the Numerical Optimization of Complex Engineering Designs by Mark A. Schwabacher Dissertation Directors: Thomas Ellman and Andrew Gelsey Gradient-based numerical optimization of complex engineering designs promises to produce better designs rapidly. However, such methods generally assume that the objective function and constraint ...