Nitrogenous excretion by the terrestrial anomuran crab Birgus latro L. was examined. The main excretory product was uric acid, representing 79-5 % of total excretory nitrogen. It was eliminated as white faeces separate from undigested food material and made up 82-6% of excretory faecal nitrogen. The faeces were the principal route of nitrogenous excretion, accounting for 96-2% of total excretio...

A family of iron(II) complexes that coordinate dinitrogen, diazene, hydrazine, and ammonia are presented. This series of complexes is unusual in that the complexes within it feature a common auxiliary ligand set and differ only by virtue of the nitrogenous N(x)H(y) ligand that occupies the sixth binding site. The ability of an iron center to bind N(2), N(2)H(2), N(2)H(4), and NH(3) is important...

This study aimed to determine excretion rates of ammonia and urea of Australian short-finned Ž . elvers as influenced by varying dietary crude protein intake. Elvers 2.3"0.02 g were fed diets Ž . Ž . Ž . Ž . containing dietary crude protein levels of 25% P25 , 35% P35 , 45% P45 and 55% P55 dry Ž matter equivalent to 14.17, 19.24, 20.57 and 26.39 g CPrMJ, respectively pairs of diets P25, P35 . a...

(Received for publication, February 4, 1954) We have made quantitative determinations on non-protein nitrogenous compounds in gastric juice, particularly of patients with gastric lesions. In 1950 Cagianutl) and his cooperators confirmed the presence of free amino acids in human gastric juice by paper partition chromatography, in addition to glucosamine and histamine. In 1951 Gilligan2) and his ...

ABSTRACT: The determination of nutritional requirements, based on diets administered in practice, considers physiological specificities and sustainability are essential to the development suitable aquaculture technologies for novel fish species. growth jundia (Rhamdia quelen Quoy Gaimard) juveniles (31.54 ± 4.92 g) fed five comprising increasing levels digestible protein (DP: 24, 29, 34, 39, 44...

Denitrification and nitrification in sediments of Tama Estuary and Odawa Bay, Japan, were investigated by the combined use of a continuous-flow sediment-water system and a N tracer technique. At Odawa Bay, the nitrification rate was comparable to the nitrate reduction rate, and 70% of the N(2) evolved originated from nitrogenous oxides (nitrate and nitrite) which were produced by the action of ...

The ability of intestinal microorganisms to N-oxidize nitrogenous compounds to nitrite or nitrate was evaluated both in vivo and in vitro. Nitrate balance studies with germ-free and conventional rats indicated that the host and not the microbial flora is responsible for excess urinary nitrate. In vitro studies showed that most intestinal microorganisms are not able to N-oxidize nitrogenous comp...

Two major nitrogenous waste products, urea and ammonium (NH(4)(+)), are produced in humans when proteins are oxidized, and in this manuscript their excretions are examined from two perspectives. First, the specific physiology of each nitrogenous waste is reviewed and the current dogmas summarized. Second, their excretions are considered in the context of integrative physiology, i.e. the need to...

PURPOSE Apoptosis-related proteins are important molecules for predicting chemotherapy response and prognosis in adult acute myeloid leukemia (AML). However, data on the expression and prognostic impact of these molecules in childhood AML are rare. EXPERIMENTAL DESIGN Using flow cytometry and Western blot analysis, we, therefore, investigated 45 leukemic cell samples from children with de nov...

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