The strategies of energy conservation in helminths.

摘要: From the above discussion it is quite obvious that bioenergetics in helminths are different many ways from those found higher organisms. All adult appear to be able consume oxygen when available but none of them can use drive pathways complete substrate degradation, like typical aerobic organisms, as a major strategy for energy generation. These properties hold also true worms residing highly environment, such blood stream or muscle and lung tissues. Although number recent studies was play apparently greater role than originally thought, energy-generating mechanisms seem place emphasis on fermentations anaerobic electron transport processes. exhibit relatively low conservation efficiencies result formation variety organic end products, most which must excreted. The correlation between type bioenergetic operative particular helminth species its environmental conditions not well understood. increased capacity generate chemical key metabolites possessing multiple respirations may give organism versatility metabolic flexibility respond changes observed corresponding habitat. Other helminths, schistosomes filariids, have continuous access fairly constant nutrient supply, were depend primarily more inefficiently functioning primitive glycolysis production. reason occurrence limited oxidative capacities completely clear. It assumed alternative evolved response lack circulatory system and/or specific, often peculiar, prevailing parasitic habitats. An idea put forward by Barrett [8] metabolism represents form biochemical economy. Most endoparasites an abundant supply food swim if land Cockain, obviously without any need extract maximum amount nutrients they take up. On other hand, fact free-living larval juvenile stages pattern clear indication DNA these organisms carries genetic message all enzymes involved degradation.(ABSTRACT TRUNCATED AT 400 WORDS)