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DƯỢC LÍ Goodman & Gilman's The Pharmacological Basis of Therapeutics 12th, 2010

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Table 38–3

Structures of Gonadotropin-Releasing Hormone (GnRH) and GnRH Analogs

GnRH CONGENER

AMINO ACID RESIDUE

(TRADE NAME) 1 2 3 4 5 6 7 8 9 10 DOSAGE FORMS

Agonists

GnRH (FACTREL, PyroGlu His Trp Ser Tyr Gly Leu Arg Pro Gly-NH 2

IV, SC

LUTREPULSE)

Goserelin (ZOLADEX) — — — — — D-Ser(tBu) — — — AzGly-NH 2

SC implant

Nafarelin (SYNAREL) — — — — — D-Nal — — — — IN

Triptorelin (TRELSTAR — — — — — D-Trp — — — — IM depot

DEPOT, LA)

Buserelin* (SUPREFACT) — — — — — D-Ser(tBu) — — Pro-NHEt IN, SC

Deslorelin* — — — — — D-Trp — — Pro-NHEt IM, SC, depot

Histrelin (VANTAS, — — — — — D-His(Bzl) — — Pro-NHEt SC implant

SUPPRELIN LA)

Leuprolide (LUPRON, — — — — — D-Leu — — Pro-NHEt IM, SC, depot

ELIGARD)

Antagonists

Abarelix* (PLENAXIS) Ac-D-Nal D-Cpa D-Pal — Tyr(N-Me) D-Asn — Lys(iPr) — D-Ala-NH 2

SC depot

Cetrorelix (CETROTIDE) Ac-D-Nal D-Cpa D-Pal — — D-Cit — — — D-Ala-NH 2

SC

Ganirelix (ANTAGON) Ac-D-Nal D-Cpa D-Pal — — D-hArg(Et) 2

— D-hArg(Et) 2

— D-Ala-NH 2

SC

Ac, acetyl; Bzl, benzyl; EtNH 2

, N-ethylamide; tBu, t butyl; D-Nal, 3-(2-naphthyl)-D-alanyl; Cpa, chlorophenylalanyl; Lys(iPr), isopropyl-lysyl; Pal, 3-pyridylalanyl; AzGly,

azaglycyl; hArg(Et) 2

, ethyl homoarginine; IV, intravenous; SC, subcutaneous; IN, intranasal; IM, intramuscular. A dash (−) denotes amino acid identity with GnRH.

CHAPTER 38

INTRODUCTION TO ENDOCRINOLOGY: THE HYPOTHALAMIC-PITUITARY AXIS

1119

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