The DOI matches its Crossref record; 72 of the 72 references it cites were found in a registry or an index.
Regulation of Arcuate Neurons Coexpressing Kisspeptin, Neurokinin B, and Dynorphin by Modulators of Neurokinin 3 and κ-Opioid Receptors in Adult Male Mice
Open accessAbstract
Pulsatile GnRH release is essential to fertility and is modulated by gonadal steroids, most likely via steroid-sensitive afferents. Arcuate neurons coexpressing kisspeptin, neurokinin B (NKB), and dynorphin (KNDy neurons) are steroid-sensitive and have been postulated to both generate GnRH pulses and mediate steroid feedback on pulse frequency. KNDy neurons are proposed to interact with one another via NKB and dynorphin to activate and inhibit the KNDy network, respectively, and thus alter kisspeptin output to GnRH neurons. To test the roles of NKB and dynorphin on KNDy neurons and the steroid sensitivity of these actions, targeted extracellular recordings were made of Tac2(NKB)-GFP-identified neurons from castrate and intact male mice. Single-cell PCR confirmed most of these cells had a KNDy phenotype. The neurokinin 3 receptor (NK3R) agonist senktide increased action potential firing activity of KNDy neurons. Dynorphin reduced spontaneous KNDy neuron activity, but antagonism of κ-opioid receptors (KOR) failed to induce firing activity in quiescent KNDy neurons. Senktide-induced activation was greater in KNDy neurons from castrate mice, whereas dynorphin-induced suppression was greater in KNDy neurons from intact mice. Interactions of dynorphin with senktide-induced activity were more complex; dynorphin treatment after senktide had no consistent inhibitory effect, whereas pretreatment with dynorphin decreased senktide-induced activity only in KNDy neurons from intact but not castrate mice. These data suggest dynorphin-mediated inhibition of senktide-induced activity requires gonadal steroid feedback. Together, these observations support the hypotheses that activation of NK3R and KOR, respectively, excites and inhibits KNDy neurons and that gonadal steroids modulate these effects.
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“Complete coexpression of kisspeptin, NKB and dynorphin is not always found (Hrabovszky et al., 2012; Navarro et al., 2011), but this issue is complicated by limitations in the sensitivity of detection (Ruka et al., 2013) and differential expression depending on developmental stage (Gill et al., 2012) or physiological state of the animal (Foradori et al., 2005; Navarro et al., 2011; Rance and Bruce”
From Modulation of body temperature and LH secretion by hypothalamic KNDy (kisspeptin, neurokinin B and dynorphin) neurons: A novel hypothesis on the mechanism of hot flushes (2013) · cites this paper as Ruka et al., 2013
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Items 101–148 of 148
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“In mice, excitatory NKB neurotransmission via NK3 autoreceptors and inhibitory Dyn signaling via κ-opioid autoreceptors play crucial roles in this communication (Navarro et al., 2011; de Croft et al., 2013; Ruka et al., 2013; Qiu et al., 2016).”
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“In addition, Ruka et al. 27 and de Croft et al. 28 showed that an NK3R agonist increased and Dyn or a KOR agonist decreased the firing frequency of GFP-labeled KNDy neurons in male mice.”
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Goodman, R. L., Coolen, L. M., & Lehman, M. N. (2014) · Elsevier eBooks · doi:10.1016/b978-0-12-408134-5.00009-3 · Cited by 10
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“PDyn inhibits glutamate release from KNDy neurons, indirectly inhibiting NKB release [19, 20], but does not directly inhibit the burst of action potentials induced by NK3R activation [20, 21].”
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“In laboratory animals, series of morphological and functional studies provided evidence that KNDy neurons communicate substantially with each other (Burke et al. 2006; de Croft et al. 2013; Foradori et al. 2006; Goodman et al. 2007; Navarro et al. 2011; Ruka et al. 2013).”
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“[47], which showed that Dyn application reduced the firing of the majority of KNDy neurons in mouse brain slices, despite the low colocali‐ zation of KOR in KNDy neurons.”
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“Indeed, central administration of senktide, a synthetic NK3R agonist, increases Fos expression in KNDy neurons [116–118] and stimulates their firing activity but does not alter GnRH neuron firing when bath-applied to acute brain slices from male mice [119,120].”
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Ivanova, D., & O’Byrne, K. T. (2023) · Journal of Molecular Endocrinology · doi:10.1530/jme-23-0079 · Cited by 5
“On the other hand, norBNI, a κ-opioid receptor antagonist, failed to affect spontaneous electrical activity of KNDy neurons in mice, despite the fact it was able to block the inhibitory actions of dynorphin in this preparation (De Croft et al. 2013 , Ruka et al. 2013 ).”
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Stoynev, N., & Kumanov, P. (2025) · Annales d Endocrinologie · doi:10.1016/j.ando.2025.101793 · Cited by 4
Blanco, W., Tabak, J., & Bertram, R. (2024) · PLoS Computational Biology · doi:10.1371/journal.pcbi.1011820 · Cited by 4
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“[65] showed that dynorphin or a KOR agonist decreased the firing frequency of GFP-tagged ARC kisspeptin neurons in male mice.”
BackgroundBiological clock and heredity in pubertal timing: what is new?
Barbieri, F., Inzaghi, E., Nicoletti, M. C., Cassio, A., Grandone, A., SANCTIS, L. D., & Bizzarri, C. (2021) · Minerva Pediatrics · doi:10.23736/s2724-5276.21.06511-3 · Cited by 3
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“On the other hand, a role for the involvement of KNDy neurons in the regulation of GnRH/gonadotropins (Ruka et al. 2013; Moore et al. 2018, 2019) and direct activation of KOR on GnRH cells following DYN treatment have been suggested in mammals (Weems et al. 2016).”
Unraveling the Neural Mechanisms Underlying the GnRH Pulse Generator: An Update
Goodman, R. L., Coolen, L. M., & Lehman, M. N. (2021) · Elsevier eBooks · doi:10.1016/b978-0-12-819801-8.00019-3 · Cited by 2
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“These findings indicate that blockade of glutamatergic neurotransmission in LepRb neurons disrupts key components of the GnRH pulse generator (Han et al., 2023; Ruka et al., 2013; Uenoyama and Tsukamura, 2023), leading ultimately to reproductive deficits.”
BackgroundFaure, M., Corona, R., Vandries, L. M., Deconinck, C., Lenfant, F., Gérard, C., Foidart, J., & Cornil, C. A. (2025) · Journal of Neuroendocrinology · doi:10.1111/jne.70016 · Cited by 1
“73 NK 3 R translates the stimulatory action of NKB on the activity of KNDy neurons 74,75 and the release of Kp. 57,76 In vivo, the activation of NK 3 R stimulates LH secretion in ovary-intact females, regardless of the estrus stage, and OVX + E 2 females.”
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IMPACT DE L’HYPERCORTICISME SUR L’AXE GONADOTROPE FEMELLE
Ayrout, M. (2018) · theses.fr (ABES) · doi:10.70675/194a6ff5z99f6z4ef0z800ez5473528e7a30
Characterization of tachykinin system and role in reproduction in the European eel
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Metadata
- Authors
- Ruka, K. A., Burger, L. L., & Moenter, S. M.
- Affiliations
- University of Michigan (US)
- Corresponding author
- Moenter, Suzanne M.
- Venue
- Endocrinology
- Publisher
- The Endocrine Society
- Published
- 2013-08-01
- Volume
- 154
- Issue
- 8
- Pages
- 2761-2771
- ISSN
- 0013-7227 (ISSN-L)
- 1945-7170
- PMC
- PMC3713217
- OpenAlex
- W2001560124
- Cited by
- 150
- References
- 72
- Citations by year
- 2026: 5 · 2025: 10 · 2024: 12 · 2023: 12 · 2022: 13 · 2021: 15 · 2020: 8 · 2019: 12 · 2018: 13 · 2017: 7 · 2016: 8 · 2015: 9 · 2014: 21 · 2013: 5
- FWCI
- 17.37
- Type
- journal article
- Language
- en
- Open access
- green
- www.ncbi.nlm.nih.gov
- Locations
- Endocrinology (publishedVersion)
- PubMed Central (publishedVersion)
- PubMed (publishedVersion)
- Funders
- Eunice Kennedy Shriver National Institute of Child Health and Human Development (R01 HD34860, R01HD034860)
- 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, neurokinin B, dynorphin, KNDy neurons, arcuate nucleus, neurokinin-3 receptor, kappa opioid receptor, senktide, gonadal steroid feedback, pulsatile GnRH release, neuronal firing, castration
- MeSH terms
- Animals, Arcuate Nucleus of Hypothalamus, Dynorphins, Gonadotropin-Releasing Hormone, Male, Membrane Potentials, Mice, Transgenic, Neurons, Orchiectomy, Peptide Fragments, Pyrrolidines, Substance P, Time Factors, Neurokinin B, Receptors, Opioid, kappa, Receptors, Neurokinin-3, Benzeneacetamides, Green Fluorescent Proteins, Mice, Kisspeptins
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