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Comparative chemical composition of protoscolices and hydatid cyst fluid of Echinococcus granulosus (Cestoda)



Comparative chemical composition of protoscolices and hydatid cyst fluid of Echinococcus granulosus (Cestoda)



International Journal for Parasitology 10(5-6): 359-364



Substantial amounts of cations were detected in hydatid cysts of the sheep strain of Echinococcus granulosus. Potassium, magnesium and calcium were present at higher concentrations in protoscoleces than in cyst fluid, but sodium levels were similar. Chloride was the most common anion in fluid, but was not detected in protoscoleces. Greater levels of phosphate and bicarbonate were detected in protoscoleces than in fluid. RNA and DNA were found in substantial amounts in protoscoleces but were only present at low levels in fluid. Uric acid, creatinine and bilirubin were absent from protoscoleces and present only in trace amounts in fluid. Ammonia nitrogen constituted the bulk of the nitrogenous compounds in protoscoleces. Proteins of cyst fluid were mainly albumin and globulin. These also constituted about one third of protoscolex protein. Activities of phosphatases, GOT, GPT and LDH were high in protoscoleces and low in fluid. Cholesterol, cholesterol esters, mono-, di- and triglycerides, fatty acids and phospholipids were detected mainly in protoscoleces, with phospholipids constituting the major portion. Glucose, sucrose, trehalose and glycogen were detected, glycogen being highest in concentration in protoscoleces and lowest in fluid, and glucose being highest in fluid and lowest in protoscoleces. [AS].

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Accession: 000842494

Download citation: RISBibTeXText

PMID: 6162815

DOI: 10.1016/0020-7519(80)90036-3


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