purpose: optisol-gs is still the most popular cold storage medium used in the united states for short term preservation of donated corneas. cebi medium is a new cold storage medium made by the central eye bank of iran for donor cornea storage. this study was conducted to compare the quantitative and qualitative indices of the donated corneas maintained in optisol-gs versus in the cebi medium. m...

For a given nonnegative integer g , a matrix An of size n is called g-Toeplitz if its entries obey the rule An =  ar−gs n−1 r,s=0. Analogously, a matrix An again of size n is called g-circulant if An =  a(r−gs) mod n n−1 r,s=0. In a recent work we studied the asymptotic properties, in terms of spectral distribution, of both g-circulant and g-Toeplitz sequences in the case where {ak} can be ...

Let q?C, let a=1011,bq=1q01, and Gq< SL2(C) be the group generated by a bq. In this paper, we study problem of determining when Gq is not free for |q|<4 rational. We give robust computational criterion, which allows us to prove that if q=s/r |s|?27, then non-free with possible exception s=24. latter case, set denominators r?N G24/r has natural density 1. For general numerator s>27, lower Gs/r b...

Compartmentation of cAMP is thought to generate the specificity of Gs-coupled receptor action in cardiac myocytes, with phosphodiesterases (PDEs) playing a major role in this process by preventing cAMP diffusion. We tested this hypothesis in adult rat ventricular myocytes by characterizing PDEs involved in the regulation of cAMP signals and L-type Ca2+ current (I(Ca,L)) on stimulation with beta...

PURPOSE The Gleason score (GS) is an important factor that is considered when making decisions about prostate cancer and its prognosis. However, upgrading of the GS can occur between transrectal ultrasonography (TRUS) biopsy and radical prostatectomy. This study analyzed the clinical factors predictive of upgrading of the GS after radical prostatectomy compared with that at the time of TRUS bio...

PURPOSE To define the impact of discordant Gleason sum (GS) between prostate biopsy (Pbx) tissue and radical prostatectomy (RP) specimen among men initially diagnosed with Gleason 6 or 7 prostate adenocarcinoma. MATERIALS AND METHODS We evaluated patients diagnosed with GS 6 or 7 and treated primarily with RP. We defined the frequency of GS discordance between Pbx and RP pathology reports. We...

A fast-spreading weed, kochia (Kochia scoparia), has developed resistance to the widely-used herbicide, glyphosate. Understanding the relationship between the occurrence of glyphosate resistance caused by multiple EPSPS gene copies and kochia fitness may suggest a more effective way of controlling kochia. A study was conducted to assess fitness cost of glyphosate resistance compared to suscepti...

BACKGROUND Pathogenesis of gallstones (GS) is multifactorial and multiple genetic and environmental factors have been identified in different populations for different types of GS with varying prevalence. However the role of the each aetiological factor on the formation of mixed cholesterol and black pigment GS has not being addressed adequately. Hence in this study we attempted to compare know...

A matrix A of size n is called g-circulant if A = [ a(r−gs) mod n ]n−1 r,s=0 , while a matrix A is called g-Toeplitz if its entries obey the rule A = [ar−gs] n−1 r,s=0. In this note we study the eigenvalues of g-circulants and we provide a preliminary asymptotic analysis of the eigenvalue distribution of g-Toeplitz sequences, in the case where the numbers {ak} are the Fourier coefficients of an...

Lafora progressive myoclonus epilepsy, caused by defective laforin or malin, insidiously present in normal teenagers with cognitive decline, followed by rapidly intractable epilepsy, dementia and death. Pathology reveals neurodegeneration with neurofibrillary tangle formation and Lafora bodies (LBs). LBs are deposits of starch-like polyglucosans, insufficiently branched and hence insoluble glyc...