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Mania M, Maruccio L, Russo F, Abbate F, Castaldo L, D'Angelo L, de Girolamo P, Guerrera MC, Lucini C, Madrigrano M, Levanti M, Germanà A. Expression and distribution of leptin and its receptors in the digestive tract of DIO (diet-induced obese) zebrafish. Ann Anat 2017; 212:37-47. [PMID: 28477448 DOI: 10.1016/j.aanat.2017.03.005] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2016] [Revised: 03/17/2017] [Accepted: 03/22/2017] [Indexed: 01/01/2023]
Abstract
The expression and localization of leptin (A and B) and its receptor family in control and diet-induced obese (DIO) adult male zebrafish gut, after 5-weeks overfeeding, administering Artemia nauplii, as fat-rich food, were investigated. Recently, the obese adult zebrafish was considered an experimental model with pathophysiological pathways similar to mammalian obesity. Currently, there are no reports about leptin in fish obesity, or in a state of altered energy balance. By qRT-PCR, leptin A and leptin B expression levels were significantly higher in DIO zebrafish gut than in the control group (CTRL), and the lowest levels of leptin receptor mRNA appeared in DIO zebrafish gut. The presence of leptin and its receptor proteins in the intestinal tract was detected by western blot analysis in both control and DIO zebrafish. By single immunohistochemical staining, leptin and leptin receptor immunoreactive endocrine cells were identified in the intestinal tract either in DIO or control zebrafish. Moreover, leptin immunopositive enteric nervous system elements were observed in both groups. By double immunohistochemical staining, leptin and its receptor were colocalized especially in DIO zebrafish. Thus, our study represents a starting point in the investigation of a possible involvement of leptin in control of energy homeostasis in control and DIO zebrafish.
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Affiliation(s)
- M Mania
- Department of Veterinary Science, University of Messina, Italy
| | - L Maruccio
- Department of Veterinary Medicine and Animal Productions, University of Naples Federico II, Italy.
| | - F Russo
- Department of Sciences and Technologies, University of Sannio, Italy
| | - F Abbate
- Department of Veterinary Science, University of Messina, Italy; Zebrafish Neuromorphology Lab, University of Messina, Italy
| | - L Castaldo
- Department of Veterinary Medicine and Animal Productions, University of Naples Federico II, Italy
| | - L D'Angelo
- Department of Veterinary Medicine and Animal Productions, University of Naples Federico II, Italy
| | - P de Girolamo
- Department of Veterinary Medicine and Animal Productions, University of Naples Federico II, Italy
| | - M C Guerrera
- Department of Veterinary Science, University of Messina, Italy; Zebrafish Neuromorphology Lab, University of Messina, Italy
| | - C Lucini
- Department of Veterinary Medicine and Animal Productions, University of Naples Federico II, Italy
| | - M Madrigrano
- Department of Veterinary Science, University of Messina, Italy
| | - M Levanti
- Department of Veterinary Science, University of Messina, Italy; Zebrafish Neuromorphology Lab, University of Messina, Italy
| | - A Germanà
- Department of Veterinary Science, University of Messina, Italy; Zebrafish Neuromorphology Lab, University of Messina, Italy
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Abbate F, Madrigrano M, Scopitteri T, Levanti M, Cobo J, Germanà A, Vega J, Laurà R. Acid-sensing ion channel immunoreactivities in the cephalic neuromasts of adult zebrafish. Ann Anat 2016; 207:27-31. [DOI: 10.1016/j.aanat.2016.06.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Revised: 06/21/2016] [Accepted: 06/22/2016] [Indexed: 01/23/2023]
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Madrigrano M, Randazzo B, Scopitteri T, Cavallaro M, Montalbano G, Germanà A, Vega J, Laurà R. Putative mechanoproteins in the cephalic neuromast of the adult zebrafish. Ann Anat 2016. [DOI: 10.1016/j.aanat.2016.04.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Guerrera M, Ramos CS, Cobo T, Madrigrano M, Vega J, Levanti M, Germana P, Germanà A, Ciriaco E. The BDNF/TrkB system in the zebrafish retina under normal and experimental conditions. Ann Anat 2014. [DOI: 10.1016/j.aanat.2014.05.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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