The Movements in the Nebula Surrounding Nova Persei

Hinks, Arthur R.

doi:10.1086/140971

Cited by 4 publications

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“…As was pointed out above it was not possible to detect, with any certainty, glucuronic acid in normal opossum urine. This was most surprising as Hinks and Bolliger (1957) claimed that Trichosurus vulpecula and other marsupials (Hinks, 1956) normally excrete considerable amounts of glucuronic acid or, more probably, some labile glucuronide. The opossum, for instance, was shown (Hinks and Bolliger, 1957) to excrete per day approximately 100 mg. of glucuronic acid as a labile glucuronide.…”

Section: Discussionmentioning

confidence: 99%

The Arylsulphatases and Related Enzymes in the Livers of Some Lower Vertebrates

Roy

1963

Aust J Exp Biol Med

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SUMMARY.The livers of the marsupials Trichosurus vulpecula and Phascolomis mitchelli, the monotreme Echidna aculeata, the lizard Tiliqua rugosa and the frog Rana temporaria have been studied with regard to their content of arylsulphatases and related enzymes. Type I arylsulphatases were found only in the opossum (T. vulpecula) and the lizard, in very small amounts in the latter. The enzymes were generally similar to the type I arylsulphatases of the eutherian mammals although they differed in their considerably lower pH optima which were in the region of pH 6. Type II arylsulphatases were found in all the species studied. The enzymes had the electrophoretic properties of a sulphatase B from a eutherian mammal but they were not typical of this group as their hydrolyses of nitrophenyl sulphate were not greatly activated by Cl~ ions and they seemed to combine many of the properties of the sulphatases A and B of the eutheria. It is therefore suggested that the complexity of the arylsulphatases in the eutheria is a recent development in their evolution. No steroid sulphatase could be detected in opossum liver.Opossum liver could synthesise p-nitrophenyl sulphate only extremely slowly and no synthesis of androstenolone, oestrone or testosterone sulphates could be detected. Normal opossum urine contained no detectable ester sulphates. A dose of 1-naphthol was excreted by the opossum mainly in the form of urinary glucuronides and only traces of ester sulphates were formed.INTRODUCTION.

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Section: Discussionmentioning

confidence: 99%

The Arylsulphatases and Related Enzymes in the Livers of Some Lower Vertebrates

Roy

1963

Aust J Exp Biol Med

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“…In any case the persistent glucuronuria in the phalanger, be it due to free glucuronic acid or to some directly reducing glucuronide, represents a physiological dividing line between higher mammals (eutheria) and certain marsupials (metatheria) such as T. vulpecula and other phalangeridae (Hinks, 1956). Higher mammals excrete stable non-reducing glycosides of glucuronic acid.…”

Section: Discussionmentioning

confidence: 99%

“…

The urine of Trichosurus vulpecula, the common brush-tail phalanger or opossum, exhibits reducing properties owing to the presence of glucuronic acid (Hinks, 1956). This observation led to an investigation on glucuronic acid in the body fluids of T. vulpecula, under various conditions.The occurrence in urine of D-glucuronic acid, its y-lactone glucuronolactone and certain glucuronides which also directly reduce alkaline sugar reagents is called glucuronuria.

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confidence: 99%