Cited by 462Neuroendocrine regulation and behaviorMemory and Neural MechanismsHypothalamic control of reproductive hormones

Lhx6 delineates a pathway mediating innate reproductive behaviors from the amygdala to the hypothalamus

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Choi, Gloria B., Dong, Hong-wei, Murphy, Andrew J., Valenzuela, David M., Yancopoulos, George D., Swanson, Larry W., Anderson, David J.·2005·Neuron

Abstract

In mammals, innate reproductive and defensive behaviors are mediated by anatomically segregated connections between the amygdala and hypothalamus. This anatomic segregation poses the problem of how the brain integrates activity in these circuits when faced with conflicting stimuli eliciting such mutually exclusive behaviors. Using genetically encoded and conventional axonal tracers, we have found that the transcription factor Lhx6 delineates the reproductive branch of this pathway. Other Lhx proteins mark neurons in amygdalar nuclei implicated in defense. We have traced parallel projections from the posterior medial amygdala, activated by reproductive or defensive olfactory stimuli, respectively, to a point of convergence in the ventromedial hypothalamus. The opposite neurotransmitter phenotypes of these convergent projections suggest a "gate control" mechanism for the inhibition of reproductive behaviors by threatening stimuli. Our data therefore identify a potential neural substrate for integrating the influences of conflicting behavioral cues and a transcription factor family that may contribute to the development of this substrate.

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Crossref · 10.1016/j.neuron.2005.04.011

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  • The medial amygdala posterodorsal (MeApd) is primarily involved in conspecific social behaviors such as mating and aggression.

    “The MeA has been subdivided into distinct functional regions along the anterior-posterior and dorsal-ventral axes, with the medial amygdala posterodorsal (MeApd) primarily involved in conspecific social behaviors such as mating and aggression (Choi et al., 2005; Hong et al., 2014).”
  • Fos induction following social interactions showed widely dispersed response patterns.

    “Electrical recordings in the MeApd of anesthetized mice have revealed sex-dependent differences in the neural responses to social cues (Bergan et al., 2014), while Fos induction following social interactions showed widely dispersed response patterns (Carvalho et al., 2015; Choi et al., 2005).”
  • The MeApd comprises GABAergic and glutamatergic neurons at an approximate ratio of 2:1, with GABAergic neurons representing the major population of projection neurons driving social responses.

    “The MeApd comprises GABAergic and glutamatergic neurons at an approximate ratio of 2:1, with GABAergic neurons representing the major population of projection neurons driving social responses (Choi et al., 2005; Hong et al., 2014; Keshavarzi et al., 2014).”

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Authors
Choi, G. B., Dong, H.-W., Murphy, A. J., Valenzuela, D. M., Yancopoulos, G. D., Swanson, L. W., & Anderson, D. J.
Affiliations
  • California Institute of Technology (US)
  • University of Southern California (US)
  • Regeneron (United States) (US)
Corresponding author
Anderson, David J.
Venue
Neuron
Publisher
Elsevier BV
Published
2005-05
Volume
46
Issue
4
Pages
647-660
ISSN
0896-6273 (ISSN-L)
OpenAlex
W2080056868
Cited by
462
References
64
Citations by year
2026: 8 · 2025: 22 · 2024: 16 · 2023: 16 · 2022: 20 · 2021: 28 · 2020: 19 · 2019: 22 · 2018: 10 · 2017: 26 · 2016: 30 · 2015: 21 · 2014: 26 · 2013: 23 · 2012: 28
FWCI
34.37
Type
journal article
Language
en
Open access
Locations
  • Neuron (publishedVersion)
  • PubMed (publishedVersion)
  • CaltechAUTHORS (California Institute of Technology) (submittedVersion)
Funders
National Institutes of Health (R21MH62825)
Topics
  • Social Sciences › Psychology › Social Psychology › Neuroendocrine regulation and behavior
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Health Sciences › Medicine › Reproductive Medicine › Hypothalamic control of reproductive hormones
Keywords
Lhx6, amygdala, hypothalamus, defensive behavior, ventromedial hypothalamus, olfactory stimuli, behavioral conflict, gate control, neural circuit integration, axon tracing
MeSH terms
Aggression, Amygdala, Animals, Behavior, Animal, Cholera Toxin, Conflict, Psychological, Female, Glutamate Decarboxylase, Hypothalamus, Immunohistochemistry, Isoenzymes, Male, Mice, Inbred C57BL, Mice, Transgenic, Nerve Tissue Proteins, Neural Pathways, Odorants, Proteins, Sexual Behavior, Animal, Stilbamidines, Stimulation, Chemical, Transcription Factors, Urine, Neural Networks, Computer, Proto-Oncogene Proteins c-fos, In Situ Hybridization, Homeodomain Proteins, Membrane Transport Proteins, Green Fluorescent Proteins, Vesicular Glutamate Transport Protein 2, Mice, LIM-Homeodomain Proteins

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