Glucose uptake machinery (Enterobius vermicularis)

The glucose uptake machinery in Enterobius vermicularis, commonly known as the human pinworm, is a critical physiological system responsible for the absorption of exogenous glucose from the host's intestinal lumen. As an anaerobic organism, the pinworm relies heavily on the fermentation of glucose to generate adenosine triphosphate (ATP) and maintain its energy requirements for survival and reproduction (Lacey, 1988). This machinery primarily involves specialized glucose transporters (GLUTs) located on the surface of the parasite's intestinal cells. Anthelmintic drugs, most notably the benzimidazole class including mebendazole and albendazole, target this system by binding to the parasite's beta-tubulin, which disrupts the formation of cytoplasmic microtubules (StatPearls, 2023). The loss of these microtubules prevents the proper transport and maintenance of the glucose uptake apparatus, leading to a significant inhibition of glucose absorption. Consequently, the parasite suffers from the depletion of its internal glycogen stores and a subsequent failure in energy metabolism, which results in immobilization and eventual death (DrugBank, 2024). This target is of high clinical importance as it allows for selective toxicity, given that benzimidazoles have a much higher affinity for nematode tubulin compared to human tubulin. Effective targeting of this machinery ensures the clearance of the infection from the host's gastrointestinal tract. Monitoring the efficacy of drugs hitting this target is typically performed through post-treatment fecal examinations for parasite eggs (CDC, 2023).

Other names

Glucose transport systemGlucose uptake systemParasite glucose transportersHelminth glucose uptake machinery

Inhibition of microtubule polymerization leading to secondary inhibition of glucose uptake and glycogen depletion.