Direct comparison of the effects of intravenous kisspeptin-10, kisspeptin-54 and GnRH on gonadotrophin secretion in healthy men
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STUDY QUESTION: How potently does the novel hypothalamic stimulator of reproduction, kisspeptin, increase gonadotrophin secretion when compared with GnRH in healthy men? SUMMARY ANSWER: At the doses tested, intravenous administration of either of two major kisspeptin isoforms, kisspeptin-10 and -54, was associated with similar levels of gonadotrophin secretion in healthy men; however, GnRH was more potent when compared with either kisspeptin isoform. WHAT IS KNOWN ALREADY: Kisspeptin-10 and -54 are naturally occurring hormones in the kisspeptin peptide family which potently stimulates endogenous GnRH secretion from the hypothalamus, so have the potential to treat patients with reproductive disorders. Rodent studies suggest that kisspeptin-54 is more potent when compared with kisspepitn-10; however, their effects have not previously been directly compared in humans, or compared with direct pituitary stimulation of gonadotrophin secretion using GnRH. STUDY DESIGN, SIZE AND DURATION: A single-blinded placebo controlled physiological study was performed from January to December 2013. Local ethical approval was granted, and five participants were recruited to each dosing group. PARTICIPANTS/MATERIALS, SETTING, METHODS: Healthy men were administered vehicle, kisspeptin-10, kisspeptin-54 and GnRH intravenously for 3 h on different study days. Each hormone was administered at 0.1, 0.3 and 1.0 nmol/kg/h doses (n = 5 subjects per group). Regular blood sampling was conducted throughout the study to measure LH and FSH. Study visits were conducted at least a week apart. MAIN RESULTS AND THE ROLE OF CHANCE: Serum LH and FSH levels were ∼3-fold higher during GnRH infusion when compared with kisspeptin-10 and ∼2-fold higher when compared with kisspeptin-54 [mean area under the curve serum LH during infusion (in hours times international units per litre, h.IU/l): 10.81 ± 1.73, 1.0 nmol/kg/h kisspeptin-10; 14.43 ± 1.27, 1.0 nmol/kg/h kisspeptin-54; 34.06 ± 5.18, 1.0 nmol/kg/h GnRH, P < 0.001 versus kisspeptin-10, P < 0.01 versus kisspeptin-54]. LIMITATIONS, REASONS FOR CAUTION: This study had a small sample size. WIDER IMPLICATIONS OF THE FINDINGS: Kisspeptin offers a novel means of stimulating the reproductive axis. Our data suggest that kisspeptin stimulates gonadotrophin secretion less potently when compared with GnRH; however, kisspeptin may stimulate gonadotrophins in a more physiological manner when compared with current therapies. Kisspeptin is emerging as a future therapeutic agent, so it is important to establish which kisspeptin hormones could be used to treat patients with infertility. Results of this study suggest that either isoform has similar effects on reproductive hormone secretion in healthy men when administered intravenously. STUDY FUNDING/COMPETING INTERESTS: This work is funded by grants from the MRC and NIHR and is supported by the NIHR Imperial Biomedical Research Centre Funding Scheme. C.N.J. is supported by an NIHR Clinical Lectureship. A.A. is supported by Wellcome Trust Research Training Fellowships. A.N.C. is supported by Wellcome Trust Translational Medicine Training Fellowship. W.S.D. is supported by an NIHR Career Development Fellowship.
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Kisspeptin stimulates gonadotropin release less potently but in a more physiologically effective way than do current treatments with GnRH analogues.
“Kisspeptin stimulates gonadotropin release less potently but in a more physiologically effective way than do current treatments with GnRH analogues.57”
From Pubertal development and regulation (2016) · cites this paper as [57]
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Pubertal development and regulation
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- Authors
- Jayasena, C. N., Abbara, A., Narayanaswamy, S., Comninos, A. N., Ratnasabapathy, R., Bassett, P., Mogford, J. T., Malik, Z., Calley, J., Ghatei, M. A., Bloom, S. R., & Dhillo, W. S.
- Affiliations
- Hammersmith Hospital (GB)
- Corresponding author
- Dhillo, W.S.
- ORCID
- Venue
- Human Reproduction
- Publisher
- Oxford University Press (OUP)
- Published
- 2015-06-18
- Volume
- 30
- Issue
- 8
- Pages
- 1934-1941
- ISSN
- 0268-1161 (ISSN-L)
- 1460-2350
- PMC
- PMC4507333
- OpenAlex
- W2195338808
- Cited by
- 52
- References
- 30
- Citations by year
- 2026: 5 · 2025: 5 · 2024: 3 · 2023: 3 · 2022: 5 · 2021: 5 · 2020: 8 · 2019: 2 · 2018: 8 · 2017: 5 · 2016: 2 · 2015: 1
- FWCI
- 6.09
- Type
- journal article
- Language
- en
- Open access
- hybrid
- doi.org
- Licence
- cc-by
- Locations
- Human Reproduction (publishedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- Funders
- MRC
- NIHR
- Wellcome Trust
- Topics
- Health Sciences › Medicine › Reproductive Medicine › Hypothalamic control of reproductive hormones
- Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuropeptides and Animal Physiology
- Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Regulation of Appetite and Obesity
- Keywords
- kisspeptin-10, kisspeptin-54, gonadotropin-releasing hormone, gonadotropin secretion, luteinizing hormone, follicle-stimulating hormone, healthy men
- MeSH terms
- Adult, Follicle Stimulating Hormone, Humans, Luteinizing Hormone, Gonadotropin-Releasing Hormone, Male, Single-Blind Method, Young Adult, Kisspeptins, Administration, Intravenous
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