Conjugates of stanozolol and hyaluronic acid

1. Conjugate between a therapeutic effective amount of stanozolol and hyaluronic acid or a hyaluronic acid salt, wherein stanozolol is conjugated with the carboxylic group of hyaluronic acid or of the hyaluronic acid salt via a spacer which forms an ester bond with the hydroxyl group of stanozolol and an ester or amide bond with the carboxyl group of hyaluronic acid or of the hyaluronic acid salt.

2. Conjugate according to claim 1 , wherein the conjugation degree of hyaluronic acid ranges between 1 and 90% mol/mol with respect to the number of repeating dimeric units of hyaluronic acid or the salt thereof.

3. Conjugate according to claim 1 , of formula (I)

wherein:

n=1-12;

X is a bivalent group selected from —O — and —NH—;

M + is an alkali metal proton or cation;

the group

is the repeating unit of hyaluronic acid or of an alkali metal salt thereof, wherein the symbol * indicates the carbon atom of said repeating unit bonded to the X group.

4. Conjugate according to claim 3 , wherein X is the group —O—.

5. A pharmaceutical and veterinary composition comprising the conjugate of claim 1 in admixture with at least one carrier or excipient.

6. The pharmaceutical and veterinary composition according to claim 5 in the form of hydrogels, injectable hydrogels, hydrogels for external use, creams, lotions, foams, aqueous solutions for intra-articular use, emulsions for ophthalmic use, or eye drops.

7. Scaffolds, artificial tissues and culture media comprising the conjugate of claim 1 .