Structure and composition of urate storage granules from the fat body of Manduca sexta

Buckner, James S.; Henderson, Thomas A.; Ehresmann, Daniel D.; Graf, George

doi:10.1016/0020-1790(90)90013-k

Cited by 9 publications

References 23 publications

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Intracellular purine deposits in the gecarcinid land crabGecarcoidea natalis

Linton¹,

Greenaway²

1997

J. Morphol.

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The terrestrial crab Gecarcoidea natalis stores large amounts of purine in the body. The major component of the purine deposits is urate (85% of the total purines). The other 15% is comprised of hypoxanthine, guanine, and xanthine. Microscopy studies reveal that these urate deposits are located intracellularly in spongy connective tissue cells throughout the body. Urate exists as numerous membrane-bound crystals 1 µm in diameter. Vesicles thought to represent urate vesicles at various stages of development are also present in the cytoplasm of the cell. Few organelles are visible in the urate storage cells, and it is unlikely that the urate is synthesized on site. Crabs (N 5 2) fed a high-nitrogen diet have greater numbers of urate storage cells at more connective tissue sites, and the cells are larger (36.3 6 1.8 µm (mean 6 SE) and 44.0 6 1.4 µm (mean 6 SE)) and contain more urate than urate storage cells in animals collected from the field (N 5 3) or maintained in the laboratory on a low-nitrogen diet (N 5 1). The mean diameter of urate storage cells in animals fed a diet low in nitrogen and field-collected animals ranges from (13.5 6 0.5 µm (SE) 2 22.3 6 1.0 µm (SE)). This histological study supports a strong correlation between purine accumulation and the nitrogen content of the diet.

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Intracellular purine deposits in the gecarcinid land crabGecarcoidea natalis

Linton¹,

Greenaway²

1997

J. Morphol.

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Mechanisms of Excretion and Ion Transport in Invertebrates

O’Donnell

1997

Comprehensive Physiology

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The sections in this article are: Ion Transport and Osmoregulation in Invertebrates: Functional Morphology and Cellular Mechanisms Water Expulsion Vesicles and Contractile Vacuoles in Protozoans, Sponges, and Cnidarians Nephridia and Coelomoducts: Embryology and Terminology Nephridia Coelomoduct‐Derived Renal Organs Gut‐Derived Renal Organs Other Ion‐Transporting Structures Excretion in Invertebrates Nitrogenous Wastes Alkaloids Organic Anions Organic Cations Magnesium and Sulfate Storage and Deposit Excretion Catabolism of Insect Neurohormones by Malpighian Tubules Roles of Arthropod Excretory Systems and Molluscan Mantle in Acid‐Base Regulation Active Transport of Sugars Transport of Cardiac Glycosides Passive Permeability to Metabolites and Toxins Future Research

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