A topically applied peptide must survive on the skin surface, penetrate the stratum corneum barrier, and reach the follicular target at a biologically relevant concentration
MK-677 has been employed primarily in studies requiring sustained, measurable elevation of circulating IGF-1 over weeks to months
Xiongwen Lv, orcid.org/0000-0003-2354-0168 This article was submitted to Ethnopharmacology, a section of the journal Frontiers in Pharmacology Disclaimer All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers
However, the effects of berberine on neurodegenerative diseases are rarely reported and further investigation is still needed
References Translational Andrology and Urology (PMC) Beyond the androgen receptor: the role of growth hormone secretagogues in the modern management of body composition in hypogonadal males (2020 review) View Source European Journal of Endocrinology (PubMed) Ipamorelin, the first selective growth hormone secretagogue (1998 preclinical pharmacology study) View Source European Journal of Anatomy Chronic in vivo Ipamorelin treatment stimulates body weight gain and growth hormone (GH) release in vitro in young female rats (2002 animal study on chronic dosing) View Source Pharmaceutical Research (PubMed) Pharmacokinetic-pharmacodynamic modeling of ipamorelin, a growth hormone releasing peptide, in human volunteers (1999 Phase I clinical pharmacology study) View Source European Journal of Anatomy Three-week chronic in vivo ipamorelin treatment: no desensitization of GH release mechanisms (2002 animal study) View Source International Journal of Colorectal Disease (PubMed) Prospective, randomized, controlled, proof-of-concept study of the ghrelin mimetic ipamorelin for the management of postoperative ileus in bowel resection patients (2014 Phase II clinical trial) View Source Johns Hopkins Arthritis Center How to Give a Subcutaneous Injection (patient educational resource) View Source NIBSC (National Institute for Biological Standards) Peptide Handling, Dissolution & Storage Guidelines (peptide storage recommendations) View Source Creative Peptides How Long Do Peptides Last
