Carbohydrate changes in hemolymph and midgut epithelium of the silkworm, <i>Bombyx mori</i>, during the course of cytoplasmic polyhedrosis

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  • 細胞質多角体病ウイルスの感染にともなう家蚕の血液および中腸皮膜の炭水化物量の変動
  • サイボウシツ タカクタイビョウ ウイルス ノ カンセン ニ トモナウ カサン

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Abstract

The daily changes in the concentrations of sugar and glycogen in the hemolymph and midgut epithelium were investigated in the 5th-instar silkworm larvae infected with cytoplasmic polyhedrosis virus (CPV). In the diseased larvae, a distinct decrease of hemolymph sugar concentration was observed comparing to control larvae during the course of cytoplasmic polyhedrosis. However, the pattern was similar to that of starved larvae. Changes in sugar contents in CPV-infected midguts were almost same as those of control or starved larvae. On the other hand, significant increase in glycogen contents in midgut epithelium infected with CPV was observed comparing to those of control or starved larvae during the course of cytoplasmic polyhedrosis. These results suggest that glycogen metabolism in midgut epithelium is affected more directly by the CPV multiplication.

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