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[Meaning of ghrelin and leptin in gastrointestinal tract diseases].

Ghrelin and leptin are newly discovered, still very mysterious, hormones. Beside the energy balance, they regulate endocrine and immune system, growth and maturate processes. Fluctuations of both hormones concentration are observed in many gastrointestinal tract diseases. In this publication is presented current knowledge about meaning ghrelin and leptin in choosen diseases, like malabsorption syndromes, inflammatory diseases and tumors of gastrointestinal tract.