ArticleEuropean journal of histochemistry : EJH2021
Immunoreactivities of AR, ERα, ERβ and aromatase in the nuptial pad of Chinese brown frog (<em>Rana dybowskii</em>) during pre-hibernation and the breeding period.
Article in European journal of histochemistry : EJH, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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4 citing papers in PubMed, 3 citations in OpenAlex.
- Structural-Molecular Linkage Shapes the Adaptive Traits of Nuptial Pads in Male Rana chensinensis.Cell biochemistry and function · 2026Article
- Hoxc13 and homologs of mammalian hair keratins are required for the cornification of nuptial pads in Xenopus frogs.Communications biology · 2026Article
- Androgen Receptors in the Dermal Glands of Male and Female Ouachita Dusky Salamanders.Integrative organismal biology (Oxford, England) · 2024Article
- Investigation of seasonal changes in lipid synthesis and metabolism-related genes in the oviduct of Chinese brown frog (<em>Rana dybowskii</em>).European journal of histochemistry : EJH · 2023Article
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Authors and funding
8 authors at 1 institution in 1 country.
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Abstract
There is a prominent local raised pad called nuptial pad on the forelimb of Chinese brown frog (Rana dybowskii), which is hypothetically concluded as an enhancement of the grip and a spreader of pheromone during the amplexus. In this study, we investigated the immunolocalization and protein expression levels of AR, ERα, ERβ and aromatase in the nuptial pad of R. dybowskii during pre-hibernation and the breeding period. Histologically, the annual development of the nuptial pad in R. dybowskii is manifested as the larger area of specialized mucous gland and the longer length of papillary epidermal projection during the breeding period. AR, ERα, ERβ and aromatase are present in the stratum granulosum, stratum spinosum, stratum basale and the secretory portion of specialized mucous glands during both periods. Western blotting results confirmed that AR, ERα and ERβ protein levels are higher during pre-hibernation than those during the breeding season. These results suggest that nuptial pad is the direct target organ of androgen and estrogen. Androgen may participate in the regulation of annual development and glandular function of nuptial pad, and estrogen may play an endocrine, autocrine or paracrine role during pre-hibernation and the breeding period.
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