AGENT TLR4, AGENT D'HOMEOSTASIE TISSULAIRE, ACTIVATEUR DU FACTEUR DE CROISSANCE DES HEPATOCYTES, AGENT DE REPARATION TISSULAIRE, ET ACTIVATEUR DE SIRTUINE AYANT DES FRAGMENTS D'ACIDE HYALURONIQUE EN TANT QUE PRINCIPES ACTIFS ASSOCIES
Provided are a TLR4 agent, a tissue homeostasis agent, a hepatocyte growth factor inducer, a tissue repairing agent, and a sirtuin inducer using hyaluronic acid fragments. Hyaluronic acid fragments selected from sizes of 2-20 sugar units, inclusive, or a pharmaceutically acceptable salt or solvate thereof, are used as the active ingredients of a TLR4 agent, a tissue homeostasis agent, a hepatocyte growth factor inducer, a tissue repairing agent, and a sirtuin inducer. The hyaluronic acid fragments are preferably hyaluronic acid fragments selected from sizes of 3-10 sugar units, inclusive, and more preferably are hyaluronic acid fragments of 3 or 4 sugar units.