Growth hormone releasing factor analogs

Details Growth hormone releasing factor analogs Growth hormone releasing factor analogs

1995-06-22

1998-12-08

Russel, Jeffrey E.

Drug, bio-affecting and body treating compositions

Designated organic active ingredient containing

Peptide containing doai

530324, 930DIG559, A61K 3825, C07K 1460

Patent

active

058469362

ABSTRACT:
Novel growth hormone releasing factor analogs are presented having a sequence of from about twenty-nine (29) to about forty-four (44) amino acids (SEQ ID NO: 6) wherein Xaa at position 1 is His, 3-MeHis, desNH.sub.2 His, Tyr, or desNH.sub.2 Tyr; Xaa at position 2 is Val, Leu, lie, Ala, D-Ala, N-Methyl-D-Ala, Gly, NIe, or Nval; Xaa at position 8 is Gln, Ser, or Thr; Xaa at position 15 is Ala or Leu; Xaa at position 27 is Met, Nle or Leu; Xaa at position 28 is Ser or Asn; Xaa at position 29 is an amino acid residue sequence (SEQ ID NO: 7) or fragments thereof where the fragment is reduced in number by one to fifteen amino acid residues from the carboxyl-terminus, where the carboxyl terminus can be the free carboxylic acid or the corresponding amide, and the pharmaceutically acceptable acid or base addition salts thereof. The novel growth hormone releasing factor analogs demonstrate enhanced potency for the release of growth hormone, have enhanced enzymatic stability, improved half-life stability in aqueous solution, and can be administered to a subject having a deficiency of growth hormone or for improvement of growth performance in livestock and other warm blooded animals and in fish and other cold blooded marine animals.

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