Abstract Global human activities, such as greenhouse emissions and pollution, are promoting global warming, environmental changes biodiversity reduction. Pristine environments those of Antarctica not immune to these phenomena, is noticeable from the increasing pace temperature shift registered within continent in recent decades. In this study, we describe first de novo transcriptome analysis en...

Migration necessarily precedes environmental change in the form of deforestation and soil degradation in tropical agricultural frontiers. But what environmental factors may contribute to these migration streams in the first place? Identifying environmental characteristics related to this process is crucial for understanding how environmental change and migration may form recurrent feedback loop...

We study the distribution function P(ω) of the random variable ω=τ(1)/(τ(1)+···+τ(N)), where τ(k)'s are the partial Wigner delay times for chaotic scattering in a disordered system with N independent, statistically equivalent channels. In this case, τ(k)'s are independent and identically distributed random variables with a distribution Ψ(τ) characterized by a "fat" power-law intermediate tail ~...

Polyamine (PA) catabolism mediated by amine oxidases is an important process involved in fine-tuning PA homeostasis and related mechanisms during salt stress. The significance of these short-term responses to stress is, however, not well understood. In the present study, effects L-aminoguanidine (AG) on tomato roots treated with induced NaCl were studied. AG usually used as a copper oxidase (Cu...

TO THE EDITOR—In a recent issue of the Journal, Divanovic and colleagues investigated the roles of the tryptophan-degrading enzyme indoleamine 2,3-dioxygenase (IDO) during murine toxoplasmosis, cutaneous leishmaniasis, and herpes simplex virus type 1 infection [1]. They concluded from their results that IDO plays important roles in the host response and that its antimicrobial or immunoregulator...

Royal Victoria Infirmary. Newcastle upon Tyne Radio-fibrinogen catabolism study is a sensitive way of assessing active participation of fibrin in the pathogenesis of renal disease. In general in oliguric patients accelerated fibrinogen catabolic rates are reflected by an increase of serum fibrin products. To evaluate further the role of intravascular coagulation and to assess the potential of h...

The arginine catabolism of Thermanaerovibrio acidaminovorans was investigated. T. acidaminovorans was able to produce approximately 0.4--0.5 mol citrulline and 0.5--0.6 mol ornithine from 1 mol of arginine. However, in a methanogenic coculture with Methanobacterium thermoautotrophicum Z245 1 mol arginine was converted to approximately 1 mol of propionate, 0.5 mol acetate, 4 mol ammonia and 4 mo...

In contrast with putrescine (1,4-diaminobutane), which is a substrate of diamine oxidase, monoacetylputrescine is oxidatively deaminated both in vitro and in vivo by monoamine oxidase. The product of this reaction is N-acetyl-gamma-aminobutyrate. The existence of a degradative pathway in mammalian brain for putrescine is shown, which comprises acetylation of putrescine, oxidative deamination of...

Dimethylsulfoniopropionate (DMSP) is a metabolite produced primarily by marine phytoplankton and is the main precursor to the climatically important gas dimethylsulfide (DMS). DMS is released upon bacterial catabolism of DMSP, but it is not the only possible fate of DMSP sulfur. An alternative demethylation/demethiolation pathway results in the eventual release of methanethiol, a highly reactiv...