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Anatomical Science International

, Volume 94, Issue 1, pp 39–52 | Cite as

Molecular neuroanatomy of the mouse medial preoptic area with reference to parental behavior

  • Yousuke TsuneokaEmail author
Review Article
  • 239 Downloads

Abstract

The medial preoptic area (MPOA), an anterior part of the hypothalamus, is one of the most important areas for the regulation of instinctively motivated behaviors, such as parental behavior, mating behavior and aggression. Consistent with its role in reproductive behaviors, the MPOA abundantly expresses gonadal steroid hormone receptors and shows distinct sexual dimorphism in its morphology. Despite the functional importance of the MPOA, the anatomical demarcations of the mouse MPOA subregions have been confusing and remained undefined because of their heterogeneity and complexity. In this review, I first introduce our histological examination showing differential expression of various molecules among the MPOA subregions. I also provide useful molecular markers to delineate the mouse MPOA subregions showing sexual dimorphism. Based on this anatomical study at the subregion level, I also summarize the current understanding of the role of the mouse MPOA and adjacent bed nucleus of the stria terminalis in parental motivation: the central part of the MPOA is essential for parental motivation, and this area exerts an inhibitory effect on the neural activity in the BNST rhomboid nucleus resulting in suppressed infanticide.

Keywords

Bed nucleus of the stria terminalis Brain Neuroanatomy Medial preoptic area Social behavior 

Notes

Acknowledgements

I am very grateful to Dr. Funato for critical reading the manuscript. This work was supported by JSPS KAKENHI (Grant number 18K06509; 17H05963) and the Takeda Science Foundation.

Compliance with ethical standards

Conflict of interest

The authors declare no competing financial interests.

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Copyright information

© Japanese Association of Anatomists 2018

Authors and Affiliations

  1. 1.Department of Anatomy, School of Medicine, Faculty of MedicineToho UniversityTokyoJapan

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