Cestode tegument calcium ion homeostasis

Cestode tegument calcium ion homeostasis refers to the set of molecular mechanisms that regulate calcium ion concentrations within the tegument—the unique surface structure—of parasitic cestodes (tapeworms). The tegument is a vital syncytial layer forming the parasite’s interface with the host and is essential for functions such as nutrient uptake, immune evasion, excretion, and signaling[2]. Disrupting calcium signaling within the tegument—mainly via modulation of voltage-gated calcium channels—causes severe effects including muscle paralysis, rapid lesions (“blebbing”) of the tegument, and eventually parasite death. Praziquantel is the primary drug known to target this process, triggering uncontrolled calcium influx that damages the parasite. Related mechanisms involve unique platyhelminth calcium channel variants and accessory proteins, differentiating them from host calcium channels, making this system a highly specific therapeutic target for tapeworm infections[1][2]. However, this is not a discrete, well-defined protein target, but rather a collection of related pathways and structures governing calcium homeostasis in the cestode tegument. **Notes:** - This is not the standard name for a molecular target; rather, it describes a physiological process (calcium ion homeostasis in cestode tegument) involving several molecular components (notably voltage-gated calcium channels and potentially Ca2+ ATPases and exchangers). - No widely accepted canonical abbreviation or set of aliases exists for this target as a discrete entity. - Disease roles refer to its role as a vulnerability in cestodes (tapeworms), thus a drug target for antiparasitic therapy. - Due to its description as a physiological pathway rather than a specific protein, “is_incorrect” is true for the purposes of strict molecular target databases.

Praziquantel: Disrupts calcium ion homeostasis by increasing calcium entry through tegumental ion channels, causing paralysis and tegument damage[1][2]. Verapamil: Calcium channel inhibition leading to tegument lesions and possibly death of the parasite[1].