Distribution of Adiponectin Receptors 1 and 2 in the Rat Olfactory Bulb and the Effect of Adiponectin Injection on Insulin Receptor Expression
Background. Adiponectin (APN) is an adipocyte-derived hormone that has peripheral beneficial effects. Although its receptors AdipoR1 and AdipoR2 are expressed in the brain, their function in neurons is poorly understood. The aims of this work were to describe the distribution of APN receptors in the...
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| Format: | Article |
| Language: | English |
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Wiley
2017-01-01
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| Series: | International Journal of Endocrinology |
| Online Access: | http://dx.doi.org/10.1155/2017/4892609 |
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| author | Alfredo Miranda-Martínez Octavio Fabián Mercado-Gómez Virginia Arriaga-Ávila Rosalinda Guevara-Guzmán |
| author_facet | Alfredo Miranda-Martínez Octavio Fabián Mercado-Gómez Virginia Arriaga-Ávila Rosalinda Guevara-Guzmán |
| author_sort | Alfredo Miranda-Martínez |
| collection | DOAJ |
| description | Background. Adiponectin (APN) is an adipocyte-derived hormone that has peripheral beneficial effects. Although its receptors AdipoR1 and AdipoR2 are expressed in the brain, their function in neurons is poorly understood. The aims of this work were to describe the distribution of APN receptors in the olfactory bulb (OB) as well as the possible effects of APN injection on the insulin receptor (InsR) content and Akt kinase. Method. We performed the double immunofluorescence technique to describe the distribution of AdipoRs and the cellular type they were expressing. mRNA transcript and protein content were assessed by RT-PCR and Western blot, respectively. APN injection was performed to analyze its possible effect on the insulin pathway. Results. We found that AdipoRs were localized in all cell layers and in both neurons and astrocytes. We observed the presence of mRNA transcripts and immunoblot analysis confirmed the protein on the intact OB; APN injection in the OB resulted in a slight decrease of the total InsR and Akt phosphorylation and a reduction of phopho-InsR content. Conclusions. These data demonstrated that AdipoRs are expressed in OB regions, and APN injection could act as an insulin pathway modulator in the OB and thus possibly contribute to olfaction physiology. |
| format | Article |
| id | doaj-art-7c821ec266cf4a6b81909a3b49285100 |
| institution | Kabale University |
| issn | 1687-8337 1687-8345 |
| language | English |
| publishDate | 2017-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Endocrinology |
| spelling | doaj-art-7c821ec266cf4a6b81909a3b492851002025-02-03T07:24:49ZengWileyInternational Journal of Endocrinology1687-83371687-83452017-01-01201710.1155/2017/48926094892609Distribution of Adiponectin Receptors 1 and 2 in the Rat Olfactory Bulb and the Effect of Adiponectin Injection on Insulin Receptor ExpressionAlfredo Miranda-Martínez0Octavio Fabián Mercado-Gómez1Virginia Arriaga-Ávila2Rosalinda Guevara-Guzmán3Departamento de Fisiología, Facultad de Medicina, Universidad Nacional Autónoma de México, Del. Coyoacán, 04510 Ciudad de México, MexicoDepartamento de Fisiología, Facultad de Medicina, Universidad Nacional Autónoma de México, Del. Coyoacán, 04510 Ciudad de México, MexicoDepartamento de Fisiología, Facultad de Medicina, Universidad Nacional Autónoma de México, Del. Coyoacán, 04510 Ciudad de México, MexicoDepartamento de Fisiología, Facultad de Medicina, Universidad Nacional Autónoma de México, Del. Coyoacán, 04510 Ciudad de México, MexicoBackground. Adiponectin (APN) is an adipocyte-derived hormone that has peripheral beneficial effects. Although its receptors AdipoR1 and AdipoR2 are expressed in the brain, their function in neurons is poorly understood. The aims of this work were to describe the distribution of APN receptors in the olfactory bulb (OB) as well as the possible effects of APN injection on the insulin receptor (InsR) content and Akt kinase. Method. We performed the double immunofluorescence technique to describe the distribution of AdipoRs and the cellular type they were expressing. mRNA transcript and protein content were assessed by RT-PCR and Western blot, respectively. APN injection was performed to analyze its possible effect on the insulin pathway. Results. We found that AdipoRs were localized in all cell layers and in both neurons and astrocytes. We observed the presence of mRNA transcripts and immunoblot analysis confirmed the protein on the intact OB; APN injection in the OB resulted in a slight decrease of the total InsR and Akt phosphorylation and a reduction of phopho-InsR content. Conclusions. These data demonstrated that AdipoRs are expressed in OB regions, and APN injection could act as an insulin pathway modulator in the OB and thus possibly contribute to olfaction physiology.http://dx.doi.org/10.1155/2017/4892609 |
| spellingShingle | Alfredo Miranda-Martínez Octavio Fabián Mercado-Gómez Virginia Arriaga-Ávila Rosalinda Guevara-Guzmán Distribution of Adiponectin Receptors 1 and 2 in the Rat Olfactory Bulb and the Effect of Adiponectin Injection on Insulin Receptor Expression International Journal of Endocrinology |
| title | Distribution of Adiponectin Receptors 1 and 2 in the Rat Olfactory Bulb and the Effect of Adiponectin Injection on Insulin Receptor Expression |
| title_full | Distribution of Adiponectin Receptors 1 and 2 in the Rat Olfactory Bulb and the Effect of Adiponectin Injection on Insulin Receptor Expression |
| title_fullStr | Distribution of Adiponectin Receptors 1 and 2 in the Rat Olfactory Bulb and the Effect of Adiponectin Injection on Insulin Receptor Expression |
| title_full_unstemmed | Distribution of Adiponectin Receptors 1 and 2 in the Rat Olfactory Bulb and the Effect of Adiponectin Injection on Insulin Receptor Expression |
| title_short | Distribution of Adiponectin Receptors 1 and 2 in the Rat Olfactory Bulb and the Effect of Adiponectin Injection on Insulin Receptor Expression |
| title_sort | distribution of adiponectin receptors 1 and 2 in the rat olfactory bulb and the effect of adiponectin injection on insulin receptor expression |
| url | http://dx.doi.org/10.1155/2017/4892609 |
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