摘要:
The invention relates to a fluid, milky microcrystalline aqueous suspension of a peptide or peptidomimetic and a counter-ion of a strong proton donor in water, wherein the peptide or peptidomimetic and counter-ion are present in amounts and at a molar ratio sufficient to form the suspension upon mixing and without formation of a gel. The invention also relates to lyophilized compositions that include a dried suspension, methods of making the lyophilized composition, methods of preparing the suspension, and sustained release formulations prepared by the methods.
摘要:
The present invention relates to novel growth hormone releasing pseudopeptides capable of stimulating the release of growth hormone from the pituitary and of promoting growth in mammals. The invention also provides pharmaceutical compositions comprising the pseudopeptides growth hormone secretagogues and a method for promoting the release of growth hormone in mammals. If continuously administered, the present pseudopeptides may also inhibit the release of growth hormone by down-regulating the growth response. An exemplary pseudopeptide compound of this invention is Aib-D-Trp-D-Trpψ[CH2—NH—O]Gly-NH2:
摘要:
The present invention relates to novel growth hormone releasing pseudopeptides capable of stimulating the release of growth hormone from the pituitary and of promoting growth in mammals. The invention also provides pharmaceutical compositions comprising the pseudopeptides growth hormone secretagogues and a method for promoting the release of growth hormone in mammals. If continuously administered, the present pseudopeptides may also inhibit the release of growth hormone by down-regulating the growth response. An exemplary pseudopeptide compound of this invention is Aib-D-Trp-D-Trpψ[CH2—NH—O]Gly-NH2:
摘要:
Peptides containing in its amino acid chain a D-2-alkylTryptophan residue wherein the alkyl group has between one and three carbon atoms and having pharmacological activity equal to or greater than that of analogous peptides containing natural unsubstituted D-Tryptophan residues in place of the D-2-alkylTryptophan. These peptides are more resistant to oxidative degradation which usually takes place, for example, in the presence of reactive radicals or during high energy sterilization than unsubstituted Tryptophan containing peptides.
摘要:
A process for manufacturing a pharmaceutical composition for the delivery of an effective amount of a bioactive peptide or peptide analog over a period of 1 to 12 months. This process includes the steps of grinding a copolymer of lactic acid and glycolic acid having a ratio of glycolide to lactide units of from about 0 to 5:1 to a particle size of between about 50 and 150 .mu.m; sterilizing the ground copolymer with a dose of between about 1 and 2.5 Mrads of ionizing .gamma.-radiation; wetting the ground and sterilized copolymer with a sterile aqueous slurry of a bioactive peptide or peptide analog; aseptically blending the copolymer and the slurry to obtain a homogeneous mixture of the copolymer and between about 10 and 50% of the bioactive peptide or peptide analog; drying the mixture at reduced pressure and at temperature not exceeding 25.degree. C.; aseptically extruding the dried mixture at a temperature between about 70 and 110.degree. C.; and aseptically cutting cylindrical rods of about 1 to 2 mm diameter and between about 10 and 25 mm in length from the extruded mixture to form the pharmaceutical implants.
摘要:
Novel peptides comprising D-2-alkyltryptophan, useful for promoting growth hormone release, compositions comprising such peptides and methods of using such compositions are described. In a preferred embodiment of the invention, the D-2-alkyl tryptophan is D-2-methyltryptophan.
摘要:
The microencapsulation of medicamentous water-soluble substances is carried out by phase separation. The operations of the hardening step take place at a temperature comprised between about 0.degree. and about 25.degree. C., the non-solvent used during this step being an aliphatic fluorinated or fluorohalogenated hydrocarbon or a mixture of such hydrocarbons. Further, the non-solvent is used in an excess with respect to the volume of solvent and non-solvent resulting from the phase-separation step.
摘要:
The invention relates to a fluid, milky microcrystalline aqueous suspension of a peptide or peptidomimetic and a counter-ion of a strong proton donor in water, wherein the peptide or peptidomimetic and counter-ion are present in amounts and at a molar ratio sufficient to form the suspension upon mixing and without formation of a gel. The invention also relates to lyophilized compositions that include a dried suspension, methods of making the lyophilized composition, methods of preparing the suspension, and sustained release formulations prepared by the methods.
摘要:
The present invention relates a number of novel peptide sequences which include a spirolactam, bicyclic or tricyclic peptidomimetic unit. The peptides disclosed herein exhibit binding to cardiac tissue and normalize cardiac pressure after administration, as well as diagnostic and therapeutic properties for certain neoplastic tissues. Importantly, these peptides do not release pituitary hormones such as corticotropin (ACTH) and growth hormone (GH), and are therefore devoid of certain unwanted side-effects. These peptides preferably have at least one lysine unit and at least one D-2-alkyl-trptophan unit.
摘要:
A peptide of formula: A--D--X--D--Mrp--B (I) A--D--X--D-.beta.Nal--B (II) E--D--X--Mrp--NH.sub.2 (III) wherein A is hydrogen, 2-aminoisobutyryl, or 4-aminobutyryl; D relates to the dextro isomer; X is Mrp, wherein Mrp is a 2-alkyltryptophan of formula (IV): ##STR1## wherein R is hydrogen, CHO, SO.sub.2 CH.sub.3, mesitylene-2-sulfonyl, PO.sub.3 (CH.sub.3).sub.2, PO.sub.3 H.sub.2, wherein R.sub.1 is a C.sub.1 -C.sub.3 alkyl group, or wherein X is a residue of protected serine, Ser (Y), wherein Y is benzyl, p-chlorobenzyl, 4-methoxybenzyl, 2,4,6-trimethoxybenzyl, or tert-butyl; B is NR.sub.2 R.sub.3, wherein R.sub.2 and R.sub.3, may be the same or different, are hydrogen, a C.sub.1 -C.sub.3 alkyl group, an OR.sub.4 group, wherein R.sub.4 is hydrogen, a C.sub.1 -C.sub.3 alkyl group or the C--Lys--NH.sub.2 group, wherein C is Phe, Mrp or D--Mrp; E is hydrogen, GAB or D--Mrp, and addition salts with pharmaceutically acceptable organic or inorganic acids of the peptide.