| 摘要 |
Analogs of CRF, which are based upon hCRF, oCRF and alpha-helical CRF, are disclosed that can be administered to achieve a substantial elevation of ACTH, beta -endorphin, beta -lipotropin, other products of the pro-opiomelanocortin gene and corticosterone levels. Analogs include those having the formula (see SEQ ID NO:9): Y-Ser-Xaa2-Glu-Pro-Pro-Ile-Ser-Leu-Asp-Leu-Thr-Phe-His-Leu-Leu-Arg-Glu -Val-Leu-Xaa20-Xaa21-Xaa22-Xaa23-Xaa24-Xaa25- Gln-Leu-Ala-Gln-Gln-Ala-Xaa32-Ser-Asn-Arg-Lys-Leu-Xaa38-Xaa39-Ile-Xaa4 1-NH2, wherein Y is an acyl group having 7 or fewer carbon atoms or hydrogen; Xaa2 is Glu or Gln; Xaa20 is Ala or Glu; Xaa21 is Met or Nle; Xaa22 is Ala or Thr; Xaa23 is Arg or Lys; Xaa24 is D-Ala or Ala; Xaa25 is Glu or Asp; Xaa32 is D-His or His; Xaa38 is Met, Nle or Leu; Xaa39 is Ala, Glu or Asp; Xaa41 is Ile or Ala; provided however that at least one of Xaa20 and Xaa39 is Ala and that the N-terminus may be shortened by a sequence of up to about 5 residues. One example is [Ala<2><0>]-oCRF. These analogs or their pharmaceutically acceptable salts, dispersed in an acceptable liquid or solid carrier, can be administered to humans. |
