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Kim J, Kim S, Choi WJ. Non-Invasive Monitoring of Cutaneous Wound Healing in Non-Diabetic and Diabetic Model of Adult Zebrafish Using OCT Angiography. Bioengineering (Basel) 2023; 10:bioengineering10050538. [PMID: 37237607 DOI: 10.3390/bioengineering10050538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 04/25/2023] [Accepted: 04/26/2023] [Indexed: 05/28/2023] Open
Abstract
A diabetic wound presents a severe risk of infections and other complications because of its slow healing. Evaluating the pathophysiology during wound healing is imperative for wound care, necessitating a proper diabetic wound model and assay for monitoring. The adult zebrafish is a rapid and robust model for studying human cutaneous wound healing because of its fecundity and high similarities to human wound repair. OCTA as an assay can provide three-dimensional (3D) imaging of the tissue structure and vasculature in the epidermis, enabling monitoring of the pathophysiologic alterations in the zebrafish skin wound. We present a longitudinal study for assessing the cutaneous wound healing of the diabetic adult zebrafish model using OCTA, which is of importance for the diabetes research using the alternative animal models. We used non-diabetic (n = 9) and type 1 diabetes mellitus (DM) adult zebrafish models (n = 9). The full-thickness wound was generated on the fish skin, and the wound healing was monitored with OCTA for 15 days. The OCTA results demonstrated significant differences between diabetic and non-diabetic wound healing, involving delayed tissue remodeling and impaired angiogenesis for the diabetic wound, leading to slow wound recovery. The adult zebrafish model and OCTA technique may benefit long-term metabolic disease studies using zebrafish for drug development.
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Affiliation(s)
- Jaeyoung Kim
- Research Institute for Skin Image, Korea University College of Medicine, Seoul 08308, Republic of Korea
- Department of Dermatology and Skin Science, University of British Columbia, Vancouver, BC V6T 1Z1, Canada
- Departments of Cancer Control Research and Integrative Oncology, British Columbia Cancer Agency, Vancouver, BC V5Z 1L3, Canada
| | - Suhyun Kim
- Department of Biomedical Sciences, Korea University College of Medicine, Seoul 02841, Republic of Korea
- Zebrafish Translational Medical Research Center, Korea University Ansan Hospital, Ansan 15355, Republic of Korea
| | - Woo June Choi
- School of Electrical and Electronics Engineering, Chung-Ang University, Seoul 06974, Republic of Korea
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2
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Inflammation and Obesity: The Pharmacological Role of Flavonoids in the Zebrafish Model. Int J Mol Sci 2023; 24:ijms24032899. [PMID: 36769222 PMCID: PMC9917473 DOI: 10.3390/ijms24032899] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 01/23/2023] [Accepted: 01/30/2023] [Indexed: 02/05/2023] Open
Abstract
A Mediterranean-style diet is highly encouraged thanks to its healthy food pattern, which includes valuable nutraceuticals such as polyphenols. Among these, flavonoids are associated with relevant biological properties through which they prevent or fight the onset of several human pathologies. Globally, the enhanced incidence of overweight and obese people has caused a dramatic increase in comorbidities, raising the need to provide better therapies. Therefore, the development of sophisticated animal models of metabolic dysregulation has allowed for a deepening of knowledge on this subject. Recent advances in using zebrafish (Danio rerio) as model for metabolic disease have yielded fundamental insights into the potential anti-obesity effects of flavonoids. Chronic low-grade inflammation and immune system activation seem to characterize the pathogenesis of obesity; thus, their reduction might improve the lipid profile of obese patients or prevent the development of associated metabolic illnesses. In this review, we highlight the beneficial role of flavonoids on obesity and related diseases linked to their anti-inflammatory properties. In light of the summarized studies, we suggest that anti-inflammatory therapies could have a relevant place in the prevention and treatment of obesity and metabolic disorders.
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Lucon-Xiccato T, Tomain M, D’Aniello S, Bertolucci C. bdnf loss affects activity, sociability, and anxiety-like behaviour in zebrafish. Behav Brain Res 2023; 436:114115. [DOI: 10.1016/j.bbr.2022.114115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2022] [Revised: 08/18/2022] [Accepted: 09/11/2022] [Indexed: 10/14/2022]
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Ghaddar B, Gence L, Veeren B, Bringart M, Bascands JL, Meilhac O, Diotel N. Aqueous Extract of Psiloxylon mauritianum, Rich in Gallic Acid, Prevents Obesity and Associated Deleterious Effects in Zebrafish. Antioxidants (Basel) 2022; 11:antiox11071309. [PMID: 35883799 PMCID: PMC9312056 DOI: 10.3390/antiox11071309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 06/26/2022] [Accepted: 06/26/2022] [Indexed: 12/04/2022] Open
Abstract
Obesity has reached epidemic proportions, and its prevalence tripled worldwide between 1975 and 2016, especially in Reunion Island, a French overseas region. Psiloxylon mauritianum, an endemic medicinal plant from Reunion Island registered in the French pharmacopeia, has recently gained interest in combating metabolic disorders because of its traditional lipid-lowering and “anti-diabetic” use. However, scientific data are lacking regarding its toxicity and its real benefits on metabolic diseases. In this study, we aim to determine the toxicity of an aqueous extract of P. mauritianum on zebrafish eleutheroembryos following the OECD toxicity assay (Organization for Economic Cooperation and Development, guidelines 36). After defining a non-toxic dose, we determined by liquid chromatography coupled to tandem mass spectrometry (LC-MS/MS) that this extract is rich in gallic acid but contains also caffeoylquinic acid, kaempferol and quercetin, as well as their respective derivatives. We also showed that the non-toxic dose exhibits lipid-lowering effects in a high-fat-diet zebrafish larvae model. In a next step, we demonstrated its preventive effects on body weight gain, hyperglycemia and liver steatosis in a diet-induced obesity model (DIO) performed in adults. It also limited the deleterious effects of overfeeding on the central nervous system (i.e., cerebral oxidative stress, blood-brain barrier breakdown, neuro-inflammation and blunted neurogenesis). Interestingly, adult DIO fish treated with P. mauritianum display normal feeding behavior but higher feces production. This indicates that the “anti-weight-gain” effect is probably due to the action of P. mauritianum on the intestinal lipid absorption and/or on the microbiota, leading to the increase in feces production. Therefore, in our experimental conditions, the aqueous extract of P. mauritianum exhibited “anti-weight-gain” properties, which prevented the development of obesity and its deleterious effects at the peripheral and central levels. These effects should be further investigated in preclinical models of obese/diabetic mice, as well as the impact of P. mauritianum on the gut microbiota.
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Affiliation(s)
- Batoul Ghaddar
- Université de La Réunion, INSERM, UMR 1188, Diabète Athérothrombose Thérapies Réunion Océan Indien (DéTROI), 97400 Saint-Denis, La Réunion, France; (B.G.); (L.G.); (B.V.); (M.B.); (J.-L.B.); (O.M.)
| | - Laura Gence
- Université de La Réunion, INSERM, UMR 1188, Diabète Athérothrombose Thérapies Réunion Océan Indien (DéTROI), 97400 Saint-Denis, La Réunion, France; (B.G.); (L.G.); (B.V.); (M.B.); (J.-L.B.); (O.M.)
| | - Bryan Veeren
- Université de La Réunion, INSERM, UMR 1188, Diabète Athérothrombose Thérapies Réunion Océan Indien (DéTROI), 97400 Saint-Denis, La Réunion, France; (B.G.); (L.G.); (B.V.); (M.B.); (J.-L.B.); (O.M.)
| | - Matthieu Bringart
- Université de La Réunion, INSERM, UMR 1188, Diabète Athérothrombose Thérapies Réunion Océan Indien (DéTROI), 97400 Saint-Denis, La Réunion, France; (B.G.); (L.G.); (B.V.); (M.B.); (J.-L.B.); (O.M.)
| | - Jean-Loup Bascands
- Université de La Réunion, INSERM, UMR 1188, Diabète Athérothrombose Thérapies Réunion Océan Indien (DéTROI), 97400 Saint-Denis, La Réunion, France; (B.G.); (L.G.); (B.V.); (M.B.); (J.-L.B.); (O.M.)
| | - Olivier Meilhac
- Université de La Réunion, INSERM, UMR 1188, Diabète Athérothrombose Thérapies Réunion Océan Indien (DéTROI), 97400 Saint-Denis, La Réunion, France; (B.G.); (L.G.); (B.V.); (M.B.); (J.-L.B.); (O.M.)
- CHU de La Réunion, 97400 Saint-Denis, La Réunion, France
| | - Nicolas Diotel
- Université de La Réunion, INSERM, UMR 1188, Diabète Athérothrombose Thérapies Réunion Océan Indien (DéTROI), 97400 Saint-Denis, La Réunion, France; (B.G.); (L.G.); (B.V.); (M.B.); (J.-L.B.); (O.M.)
- Correspondence:
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Ghaddar B, Diotel N. Zebrafish: A New Promise to Study the Impact of Metabolic Disorders on the Brain. Int J Mol Sci 2022; 23:ijms23105372. [PMID: 35628176 PMCID: PMC9141892 DOI: 10.3390/ijms23105372] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Revised: 05/04/2022] [Accepted: 05/06/2022] [Indexed: 02/01/2023] Open
Abstract
Zebrafish has become a popular model to study many physiological and pathophysiological processes in humans. In recent years, it has rapidly emerged in the study of metabolic disorders, namely, obesity and diabetes, as the regulatory mechanisms and metabolic pathways of glucose and lipid homeostasis are highly conserved between fish and mammals. Zebrafish is also widely used in the field of neurosciences to study brain plasticity and regenerative mechanisms due to the high maintenance and activity of neural stem cells during adulthood. Recently, a large body of evidence has established that metabolic disorders can alter brain homeostasis, leading to neuro-inflammation and oxidative stress and causing decreased neurogenesis. To date, these pathological metabolic conditions are also risk factors for the development of cognitive dysfunctions and neurodegenerative diseases. In this review, we first aim to describe the main metabolic models established in zebrafish to demonstrate their similarities with their respective mammalian/human counterparts. Then, in the second part, we report the impact of metabolic disorders (obesity and diabetes) on brain homeostasis with a particular focus on the blood-brain barrier, neuro-inflammation, oxidative stress, cognitive functions and brain plasticity. Finally, we propose interesting signaling pathways and regulatory mechanisms to be explored in order to better understand how metabolic disorders can negatively impact neural stem cell activity.
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Localization of BDNF and Calretinin in Olfactory Epithelium and Taste Buds of Zebrafish (Danio rerio). Int J Mol Sci 2022; 23:ijms23094696. [PMID: 35563087 PMCID: PMC9101965 DOI: 10.3390/ijms23094696] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 04/19/2022] [Accepted: 04/22/2022] [Indexed: 11/17/2022] Open
Abstract
Brain-derived neurotrophic factor (BDNF) is a member of the neurotrophin family and it is involved in several fundamental functions in the central and peripheral nervous systems, and in sensory organs. BDNF regulates the chemosensory systems of mammals and is consistently expressed in those organs. In zebrafish, the key role of BDNF in the biology of the hair cells of the inner ear and lateral line system has recently been demonstrated. However, only some information is available about its occurrence in the olfactory epithelium, taste buds, and cutaneous isolated chemosensory cells. Therefore, this study was undertaken to analyze the involvement of BDNF in the chemosensory organs of zebrafish during the larval and adult stages. To identify cells displaying BDNF, we compared the cellular pattern of BDNF-displaying cells with those immunoreactive for calretinin and S100 protein. Our results demonstrate the localization of BDNF in the sensory part of the olfactory epithelium, mainly in the ciliated olfactory sensory neurons in larvae and adult zebrafish. Intense immunoreaction for BDNF was also observed in the chemosensory cells of oral and cutaneous taste buds. Moreover, a subpopulation of olfactory sensory neurons and chemosensory cells of olfactory rosette and taste bud, respectively, showed marked immunopositivity for calcium-binding protein S100 and calretinin. These results demonstrate the possible role of BDNF in the development and maintenance of olfactory sensory neurons and sensory cells in the olfactory epithelium and taste organs of zebrafish during all stages of development.
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Gence L, Fernezelian D, Bringart M, Veeren B, Christophe A, Brion F, Meilhac O, Bascands JL, Diotel N. Hypericum lanceolatum Lam. Medicinal Plant: Potential Toxicity and Therapeutic Effects Based on a Zebrafish Model. Front Pharmacol 2022; 13:832928. [PMID: 35359845 PMCID: PMC8963451 DOI: 10.3389/fphar.2022.832928] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Accepted: 02/04/2022] [Indexed: 12/26/2022] Open
Abstract
Hypericum lanceolatum Lam. (H. lanceolatum) is a traditional medicinal plant from Reunion Island used for its pleiotropic effects mainly related to its antioxidant activity. The present work aimed to 1) determine the potential toxicity of the plant aqueous extract in vivo and 2) investigate its putative biological properties using several zebrafish models of oxidative stress, regeneration, estrogenicity, neurogenesis and metabolic disorders. First, we characterized the polyphenolic composition by liquid chromatography-tandem mass spectrometry (LC-MS/MS) and identified chlorogenic acid isomers, quercetin and kaempferol derivatives as the major compounds. We then evaluated for the first time the toxicity of an aqueous extract of H. lanceolatum and determined a maximum non-toxic concentration (MNTC) in zebrafish eleutheroembryos from 0 to 96 hpf following OECD (Organization for Economic Cooperation and Development) guidelines. This MNTC test was also determined on hatched eleutheroembryos after 2 days of treatment (from 3 to 5 dpf). In our study, the anti-estrogenic effects of H. lanceolatum are supported by the data from the EASZY assay. In a tail amputation model, we showed that H. lanceolatum at its MNTC displays antioxidant properties, favors immune cell recruitment and tissue regeneration. Our results also highlighted its beneficial effects in metabolic disorders. Indeed, H. lanceolatum efficiently reduces lipid accumulation and body mass index in overfed larva- and adult-models, respectively. In addition, we show that H. lanceolatum did not improve fasting blood glucose levels in a hyperglycemic zebrafish model but surprisingly inhibited neurogenesis impairment observed in diabetic conditions. In conclusion, our study highlights the antioxidant, pro-regenerative, anti-lipid accumulation and pro-neurogenic effects of H. lanceolatum in vivo and supports the use of this traditional medicinal plant as a potential alternative in the prevention and/or treatment of metabolic disorders.
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Affiliation(s)
- Laura Gence
- Université de La Réunion, INSERM, Diabéte athérothrombose Thérapies Réunion Océan Indien (DéTROI), Saint-Denis de La Réunion, France
| | - Danielle Fernezelian
- Université de La Réunion, INSERM, Diabéte athérothrombose Thérapies Réunion Océan Indien (DéTROI), Saint-Denis de La Réunion, France
| | - Matthieu Bringart
- Université de La Réunion, INSERM, Diabéte athérothrombose Thérapies Réunion Océan Indien (DéTROI), Saint-Denis de La Réunion, France
| | - Bryan Veeren
- Université de La Réunion, INSERM, Diabéte athérothrombose Thérapies Réunion Océan Indien (DéTROI), Saint-Denis de La Réunion, France
| | - Armelle Christophe
- Unité D’Écotoxicologie des Substances et des Milieux (ESMI), Institut National de L’Environnement Industriel et des Risques (INERIS), Verneuil-en-Halatte, France
| | - François Brion
- Unité D’Écotoxicologie des Substances et des Milieux (ESMI), Institut National de L’Environnement Industriel et des Risques (INERIS), Verneuil-en-Halatte, France
| | - Olivier Meilhac
- Université de La Réunion, INSERM, Diabéte athérothrombose Thérapies Réunion Océan Indien (DéTROI), Saint-Denis de La Réunion, France
- CHU de La Réunion, Saint-Denis, France
| | - Jean-Loup Bascands
- Université de La Réunion, INSERM, Diabéte athérothrombose Thérapies Réunion Océan Indien (DéTROI), Saint-Denis de La Réunion, France
- *Correspondence: Jean-Loup Bascands, ; Nicolas Diotel,
| | - Nicolas Diotel
- Université de La Réunion, INSERM, Diabéte athérothrombose Thérapies Réunion Océan Indien (DéTROI), Saint-Denis de La Réunion, France
- *Correspondence: Jean-Loup Bascands, ; Nicolas Diotel,
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Abbate F, Guerrera MC, Levanti M, Laurà R, Aragona M, Mhalhel K, Montalbano G, Germanà A. Morphological characteristics of the blackspot seabream (Pagellus bogaraveo) tongue: A structural and immunohistochemical study. Anat Histol Embryol 2021; 51:103-111. [PMID: 34820882 PMCID: PMC9298791 DOI: 10.1111/ahe.12769] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 10/01/2021] [Accepted: 11/16/2021] [Indexed: 11/27/2022]
Abstract
The blackspot seabream (Pagellus bogaraveo, Brünnich, 1768) is an omnivorous, predominantly carnivorous fish. In aquaculture, it is fed with pellets rich in proteins and fat. The morphological and functional aspects of the fish tongue, the feeding modality and the tasting capacity are strictly related. Therefore, the aim of this study was to describe by scanning electron, light and confocal laser microscopy, the morphological characteristics of the tongue in this species. It showed an apex, a body and a root. There were rows of teeth on the edges of the mouth and taste pores on all the tongue dorsal surface with folds and furrows. In addition, body and root showed several fungiform-like papillae in the mucosa of the folds, covered by a weakly keratinized stratified squamous epithelium, can be observed. The papillae were innervated by S100 positive fibres. In the apex, a mesenchymal tissue with vimentin positive star-shaped stem cells was evident. The results could give a support for a wider use of the blackspot seabream as a farmed species, considering the morphological data as correlated with the potentiality of food discrimination. This provides a basis for possible applications in feeding strategies. The presence, localization and characteristics of the mesenchymal stem cells, as seen also in previous studies, could represent a further basis for future applications in clinical trials.
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Affiliation(s)
- Francesco Abbate
- Department of Veterinary Sciences, University of Messina, Messina, Italy
| | | | - Maria Levanti
- Department of Veterinary Sciences, University of Messina, Messina, Italy
| | - Rosaria Laurà
- Department of Veterinary Sciences, University of Messina, Messina, Italy
| | - Marialuisa Aragona
- Department of Veterinary Sciences, University of Messina, Messina, Italy
| | - Kamel Mhalhel
- Department of Veterinary Sciences, University of Messina, Messina, Italy
| | | | - Antonino Germanà
- Department of Veterinary Sciences, University of Messina, Messina, Italy
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Aragona M, Porcino C, Guerrera MC, Montalbano G, Levanti M, Abbate F, Laurà R, Germanà A. Localization of Neurotrophin Specific Trk Receptors in Mechanosensory Systems of Killifish ( Nothobranchius guentheri). Int J Mol Sci 2021; 22:10411. [PMID: 34638748 PMCID: PMC8508645 DOI: 10.3390/ijms221910411] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 09/24/2021] [Accepted: 09/24/2021] [Indexed: 12/25/2022] Open
Abstract
Neurotrophins (NTs) and their signal-transducing Trk receptors play a crucial role in the development and maintenance of specific neuronal subpopulations in nervous and sensory systems. NTs are supposed to regulate two sensory systems in fish, the inner ear and the lateral line system (LLS). The latter is one of the major mechanosensory systems in fish. Considering that annual fishes of the genus Nothobranchius, with their short life expectancy, have become a suitable model for aging studies and that the occurrence and distribution of neurotrophin Trk receptors have never been investigated in the inner ear and LLS of killifish (Nothobranchius guentheri), our study aimed to investigate the localization of neurotrophin-specific Trk receptors in mechanosensory systems of N. guentheri. For histological and immunohistochemical analysis, adult specimens of N. guentheri were processed using antibodies against Trk receptors and S100 protein. An intense immunoreaction for TrkA and TrkC was found in the sensory cells of the inner ear as well as in the hair cells of LLS. Moreover, also the neurons localized in the acoustic ganglia displayed a specific immunoreaction for all Trk receptors (TrkA, B, and C) analyzed. Taken together, our results demonstrate, for the first time, that neurotrophins and their specific receptors could play a pivotal role in the biology of the sensory cells of the inner ear and LLS of N. guentheri and might also be involved in the hair cells regeneration process in normal and aged conditions.
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Affiliation(s)
| | | | | | | | | | | | | | - Antonino Germanà
- Zebrafish Neuromorphology Laboratory, Department of Veterinary Sciences, University of Messina, 98168 Messina, Italy; (M.A.); (C.P.); (M.C.G.); (G.M.); (M.L.); (F.A.); (R.L.)
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Hsieh YW, Tsai YW, Lai HH, Lai CY, Lin CY, Her GM. Depletion of Alpha-Melanocyte-Stimulating Hormone Induces Insatiable Appetite and Gains in Energy Reserves and Body Weight in Zebrafish. Biomedicines 2021; 9:941. [PMID: 34440144 PMCID: PMC8392443 DOI: 10.3390/biomedicines9080941] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 07/24/2021] [Accepted: 07/27/2021] [Indexed: 12/23/2022] Open
Abstract
The functions of anorexigenic neurons secreting proopiomelanocortin (POMC)/alpha-melanocyte-stimulating hormone (α-MSH) of the melanocortin system in the hypothalamus in vertebrates are energy homeostasis, food intake, and body weight regulation. However, the mechanisms remain elusive. This article reports on zebrafish that have been genetically engineered to produce α-MSH mutants, α-MSH-7aa and α-MSH-8aa, selectively lacking 7 and 8 amino acids within the α-MSH region, but retaining most of the other normal melanocortin-signaling (Pomc-derived) peptides. The α-MSH mutants exhibited hyperphagic phenotypes leading to body weight gain, as observed in human patients and mammalian models. The actions of several genes regulating appetite in zebrafish are similar to those in mammals when analyzed using gene expression analysis. These include four selected orexigenic genes: Promelanin-concentrating hormone (pmch), agouti-related protein 2 (agrp2), neuropeptide Y (npy), and hypothalamic hypocretin/orexin (hcrt). We also study five selected anorexigenic genes: Brain-derived neurotrophic factor (bdnf), single-minded homolog 1-a (sim1a), corticotropin-releasing hormone b (crhb), thyrotropin-releasing hormone (trh), and prohormone convertase 2 (pcsk2). The orexigenic actions of α-MSH mutants are rescued completely after hindbrain ventricle injection with a synthetic analog of α-MSH and a melanocortin receptor agonist, Melanotan II. We evaluate the adverse effects of MSH depletion on energy balance using the Alamar Blue metabolic rate assay. Our results show that α-MSH is a key regulator of POMC signaling in appetite regulation and energy expenditure, suggesting that it might be a potential therapeutic target for treating human obesity.
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Affiliation(s)
- Yang-Wen Hsieh
- Department of Bioscience and Biotechnology, National Taiwan Ocean University, Keelung 202, Taiwan; (Y.-W.H.); (C.-Y.L.); (C.-Y.L.)
- Institute of Biopharmaceutical Sciences, National Yang Ming Chiao Tung University, Taipei 112, Taiwan;
| | - Yi-Wen Tsai
- Department of Family Medicine, Chang Gung Memorial Hospital, Keelung 204, Taiwan;
- College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
| | - Hsin-Hung Lai
- Institute of Biopharmaceutical Sciences, National Yang Ming Chiao Tung University, Taipei 112, Taiwan;
| | - Chi-Yu Lai
- Department of Bioscience and Biotechnology, National Taiwan Ocean University, Keelung 202, Taiwan; (Y.-W.H.); (C.-Y.L.); (C.-Y.L.)
- Institute of Biopharmaceutical Sciences, National Yang Ming Chiao Tung University, Taipei 112, Taiwan;
| | - Chiu-Ya Lin
- Department of Bioscience and Biotechnology, National Taiwan Ocean University, Keelung 202, Taiwan; (Y.-W.H.); (C.-Y.L.); (C.-Y.L.)
- Institute of Biopharmaceutical Sciences, National Yang Ming Chiao Tung University, Taipei 112, Taiwan;
| | - Guor Mour Her
- Institute of Biopharmaceutical Sciences, National Yang Ming Chiao Tung University, Taipei 112, Taiwan;
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Karoglu-Eravsar ET, Tuz-Sasik MU, Adams MM. Short-term dietary restriction maintains synaptic plasticity whereas short-term overfeeding alters cellular dynamics in the aged brain: evidence from the zebrafish model organism. Neurobiol Aging 2021; 106:169-182. [PMID: 34284260 DOI: 10.1016/j.neurobiolaging.2021.06.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 05/06/2021] [Accepted: 06/12/2021] [Indexed: 12/12/2022]
Abstract
Increased caloric intake (OF) impairs quality of life causing comorbidities with other diseases and cognitive deficits, whereas dietary restriction (DR) increases healthspan by preventing age-related deteriorations. To understand the effects of these opposing dietary regimens on the cellular and synaptic dynamics during brain aging, the zebrafish model, which shows gradual aging like mammals, was utilized. Global changes in cellular and synaptic markers with respect to age and a 12 week dietary regimen of OF and DR demonstrated that aging reduces the levels of the glutamate receptor subunits, GLUR2/3, inhibitory synaptic clustering protein, GEP, synaptic vesicle protein, SYP, and early-differentiated neuronal marker, HuC. DR significantly elevates levels of glutamate receptor subunits, GLUR2/3, and NMDA clustering protein, PSD95, levels, while OF subtly increases the level of the neuronal protein, DCAMKL1. These data suggest that decreased caloric intake within the context of aging has more robust effects on synapses than cellular proteins, whereas OF alters cellular dynamics. Thus, patterns like these should be taken into account for possible translation to human subjects.
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Affiliation(s)
- Elif Tugce Karoglu-Eravsar
- Interdisciplinary Program in Neuroscience, Aysel Sabuncu Brain Research Center, Bilkent University, Ankara, Turkey; National Nanotechnology Research Center (UNAM), Bilkent University, Ankara, Turkey; Department of Molecular Biology and Genetics, Zebrafish Facility, Bilkent University, Ankara, Turkey; Department of Psychology, Selcuk University, Konya, Turkey
| | - Melek Umay Tuz-Sasik
- Interdisciplinary Program in Neuroscience, Aysel Sabuncu Brain Research Center, Bilkent University, Ankara, Turkey; National Nanotechnology Research Center (UNAM), Bilkent University, Ankara, Turkey; Department of Molecular Biology and Genetics, Zebrafish Facility, Bilkent University, Ankara, Turkey
| | - Michelle M Adams
- Interdisciplinary Program in Neuroscience, Aysel Sabuncu Brain Research Center, Bilkent University, Ankara, Turkey; National Nanotechnology Research Center (UNAM), Bilkent University, Ankara, Turkey; Department of Molecular Biology and Genetics, Zebrafish Facility, Bilkent University, Ankara, Turkey; Department of Psychology, Bilkent University, Ankara, Turkey.
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12
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Ghaddar B, Bringart M, Lefebvre d'Hellencourt C, Meilhac O, Diotel N. Deleterious Effects of Overfeeding on Brain Homeostasis and Plasticity in Adult Zebrafish. Zebrafish 2021; 18:190-206. [PMID: 34028307 DOI: 10.1089/zeb.2020.1962] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Overweight and obesity are worldwide epidemic health threats. They recently emerged as disruptors of brain homeostasis leading to a wide variety of neurologic disorders. This study aims at developing a fast and easy overfeeding model using zebrafish for investigating the impact of overweight on brain homeostasis. We established a 4-week overfeeding protocol using commercially available dry food in an ad libitum-like feeding. In the diet-induced obesity/overweight (DIO) fish model, weight, size, and body mass index were increased compared with controls. Also, DIO fish displayed hyperglycemia, and had higher levels of advanced glycation end products and oxidative stress (4-hydroxynonenal [4-HNE]) in a peripheral organ (tail). Although overfed fish did not display major blood-brain barrier leakage, they showed an increased cerebral oxidative stress, blunted brain cell proliferation as well as a striking decreased locomotor activity. Interestingly, switching from an overfeeding to a normal diet partially improved peripheral and central disruptions induced by overfeeding in solely 2 weeks. As a conclusion, this study provides a rapid and easy overfeeding model in zebrafish with relevant peripheral and central disruptions. This model could open the way for further investigations to better understand by which mechanisms overfeeding could disturb brain homeostasis. It also reinforces and contrasts with another zebrafish overweight model, showing that the type of the food provided could impair differently brain homeostasis.
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Affiliation(s)
- Batoul Ghaddar
- Diabète athérothrombose Thérapies Réunion Océan Indien (DéTROI), INSERM, UMR 1188, Université de La Réunion, Saint-Denis, France
| | - Matthieu Bringart
- Diabète athérothrombose Thérapies Réunion Océan Indien (DéTROI), INSERM, UMR 1188, Université de La Réunion, Saint-Denis, France
| | - Christian Lefebvre d'Hellencourt
- Diabète athérothrombose Thérapies Réunion Océan Indien (DéTROI), INSERM, UMR 1188, Université de La Réunion, Saint-Denis, France
| | - Olivier Meilhac
- Diabète athérothrombose Thérapies Réunion Océan Indien (DéTROI), INSERM, UMR 1188, Université de La Réunion, Saint-Denis, France.,CHU de La Réunion, Saint-Denis, France
| | - Nicolas Diotel
- Diabète athérothrombose Thérapies Réunion Océan Indien (DéTROI), INSERM, UMR 1188, Université de La Réunion, Saint-Denis, France
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13
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Zebrafish and Flavonoids: Adjuvants against Obesity. Molecules 2021; 26:molecules26103014. [PMID: 34069388 PMCID: PMC8158719 DOI: 10.3390/molecules26103014] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Revised: 05/11/2021] [Accepted: 05/17/2021] [Indexed: 12/16/2022] Open
Abstract
Obesity is a pathological condition, defined as an excessive accumulation of fat, primarily caused by an energy imbalance. The storage of excess energy in the form of triglycerides within the adipocyte leads to lipotoxicity and promotes the phenotypic switch in the M1/M2 macrophage. These changes induce the development of a chronic state of low-grade inflammation, subsequently generating obesity-related complications, commonly known as metabolic syndromes. Over the past decade, obesity has been studied in many animal models. However, due to its competitive aspects and unique characteristics, the use of zebrafish has begun to gain traction in experimental obesity research. To counteract obesity and its related comorbidities, several natural substances have been studied. One of those natural substances reported to have substantial biological effects on obesity are flavonoids. This review summarizes the results of studies that examined the effects of flavonoids on obesity and related diseases and the emergence of zebrafish as a model of diet-induced obesity.
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Montalbano G, Maugeri A, Guerrera MC, Miceli N, Navarra M, Barreca D, Cirmi S, Germanà A. A White Grape Juice Extract Reduces Fat Accumulation through the Modulation of Ghrelin and Leptin Expression in an In Vivo Model of Overfed Zebrafish. Molecules 2021; 26:molecules26041119. [PMID: 33672773 PMCID: PMC7924606 DOI: 10.3390/molecules26041119] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 02/17/2021] [Accepted: 02/18/2021] [Indexed: 12/13/2022] Open
Abstract
A caloric surplus and a sedentary lifestyle are undoubtedly known to be the leading causes of obesity. Natural products represent valuable allies to face this problematic issue. This study was planned to assess the effect of a white grape (Vitis vinifera) juice extract (WGJe) in diet-induced obese zebrafish (Danio rerio). Fish were divided into four different diet groups: (i) normally fed (NF); (ii) overfed (OF); (iii) WGJe-supplemented NF (5 mL/L in fish water); (iv) WGJe-supplemented OF. Body mass index (BMI) was extrapolated each week. After the fourth week, euthanized zebrafish were processed for both microscopic evaluations and gene expression analyses. OF zebrafish showed higher BMI values with respect to NF counterparts, an effect that was hindered by WGJe treatment. Moreover, histological analyses showed that the area of the adipose tissue, as well as the number, size, and density of adipocytes was significantly higher in OF fish. On the other hand, WGJe was able to avoid these outcomes both at the subcutaneous and visceral levels, albeit to different extents. At the gene level, WGJe restored the altered levels of ghrelin and leptin of OF fish both in gut and brain. Overall, our results support the anti-obesity property of WGJe, suggesting its potential role in weight management.
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Affiliation(s)
- Giuseppe Montalbano
- Zebrafish Neuromorphology Lab, Department of Veterinary Sciences, University of Messina, 98168 Messina, Italy; (G.M.); (M.C.G.); (A.G.)
| | - Alessandro Maugeri
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, 98122 Messina, Italy; (A.M.); (N.M.); (M.N.); (D.B.)
| | - Maria Cristina Guerrera
- Zebrafish Neuromorphology Lab, Department of Veterinary Sciences, University of Messina, 98168 Messina, Italy; (G.M.); (M.C.G.); (A.G.)
| | - Natalizia Miceli
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, 98122 Messina, Italy; (A.M.); (N.M.); (M.N.); (D.B.)
| | - Michele Navarra
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, 98122 Messina, Italy; (A.M.); (N.M.); (M.N.); (D.B.)
| | - Davide Barreca
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, 98122 Messina, Italy; (A.M.); (N.M.); (M.N.); (D.B.)
| | - Santa Cirmi
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, 98122 Messina, Italy; (A.M.); (N.M.); (M.N.); (D.B.)
- Department of Pharmacy-Drug Sciences, University of Bari “Aldo Moro”, 70125 Bari, Italy
- Correspondence: or
| | - Antonino Germanà
- Zebrafish Neuromorphology Lab, Department of Veterinary Sciences, University of Messina, 98168 Messina, Italy; (G.M.); (M.C.G.); (A.G.)
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Ghaddar B, Veeren B, Rondeau P, Bringart M, Lefebvre d'Hellencourt C, Meilhac O, Bascands JL, Diotel N. Impaired brain homeostasis and neurogenesis in diet-induced overweight zebrafish: a preventive role from A. borbonica extract. Sci Rep 2020; 10:14496. [PMID: 32879342 PMCID: PMC7468118 DOI: 10.1038/s41598-020-71402-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2020] [Accepted: 08/06/2020] [Indexed: 02/06/2023] Open
Abstract
Overweight and obesity are worldwide health concerns leading to many physiological disorders. Recent data highlighted their deleterious effects on brain homeostasis and plasticity, but the mechanisms underlying such disruptions are still not well understood. In this study, we developed and characterized a fast and reliable diet-induced overweight (DIO) model in zebrafish, for (1) studying the effects of overfeeding on brain homeostasis and for (2) testing different preventive and/or therapeutic strategies. By overfeeding zebrafish for 4 weeks, we report the disruption of many metabolic parameters reproducing human overweight features including increased body weight, body mass index, fasting blood glucose levels and liver steatosis. Furthermore, DIO fish displayed blood–brain barrier leakage, cerebral oxidative stress, neuroinflammation and decreased neurogenesis. Finally, we investigated the preventive beneficial effects of A. borbonica, an endogenous plant from Reunion Island. Overnight treatment with A. borbonica aqueous extract during the 4 weeks of overfeeding limited some detrimental central effects of DIO. In conclusion, we established a relevant DIO model in zebrafish demonstrating that overfeeding impairs peripheral and central homeostasis. This work also highlights the preventive protective effects of A. borbonica aqueous extracts in DIO, and opens a way to easily screen drugs aiming at limiting overweight and associated neurological disorders.
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Affiliation(s)
- Batoul Ghaddar
- INSERM, UMR 1188, Diabète athérothrombose Thérapies Réunion Océan Indien (DéTROI), Université de La Réunion, Saint-Denis de La Réunion, France
| | - Bryan Veeren
- INSERM, UMR 1188, Diabète athérothrombose Thérapies Réunion Océan Indien (DéTROI), Université de La Réunion, Saint-Denis de La Réunion, France
| | - Philippe Rondeau
- INSERM, UMR 1188, Diabète athérothrombose Thérapies Réunion Océan Indien (DéTROI), Université de La Réunion, Saint-Denis de La Réunion, France
| | - Matthieu Bringart
- INSERM, UMR 1188, Diabète athérothrombose Thérapies Réunion Océan Indien (DéTROI), Université de La Réunion, Saint-Denis de La Réunion, France
| | - Christian Lefebvre d'Hellencourt
- INSERM, UMR 1188, Diabète athérothrombose Thérapies Réunion Océan Indien (DéTROI), Université de La Réunion, Saint-Denis de La Réunion, France
| | - Olivier Meilhac
- INSERM, UMR 1188, Diabète athérothrombose Thérapies Réunion Océan Indien (DéTROI), Université de La Réunion, Saint-Denis de La Réunion, France.,CHU de La Réunion, Saint-Denis, France
| | - Jean-Loup Bascands
- INSERM, UMR 1188, Diabète athérothrombose Thérapies Réunion Océan Indien (DéTROI), Université de La Réunion, Saint-Denis de La Réunion, France
| | - Nicolas Diotel
- INSERM, UMR 1188, Diabète athérothrombose Thérapies Réunion Océan Indien (DéTROI), Université de La Réunion, Saint-Denis de La Réunion, France.
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16
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Overfeeding-Induced Obesity Could Cause Potential Immuno-Physiological Disorders in Rainbow Trout ( Oncorhynchus mykiss). Animals (Basel) 2020; 10:ani10091499. [PMID: 32854279 PMCID: PMC7552159 DOI: 10.3390/ani10091499] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Revised: 08/17/2020] [Accepted: 08/21/2020] [Indexed: 12/14/2022] Open
Abstract
Although over-nutrition from overfeeding-induced obesity is known to be highly associated with metabolic and immunological disorders in humans, little is known about overfeeding-induced obesity in fish farming. The purpose of this study was to investigate changes in immuno-physiological parameters, to better understand the potential risk of overfeeding-induced obesity in fish. Commercial feed was provided to fish in the overfed group until they refuse to eat, but fish in the control group was fed with the feed at 1% bodyweight per day. The hemato-serological, histological, and immunological changes were observed at weeks 2 and 8. Rainbow trout leukocytes were co-incubated with oxidized low-density lipoprotein (OxLDL), and the phagocytes engulfing the OxLDL and the presence of apoptotic cells were evaluated. The body weight, body mass index (BMI), and hepatosomatic index (HSI) index were significantly higher in the overfed group, and high lipid accumulation and fatty changes were also observed in their livers, indicating that the feeding regime used in this study led to overfeeding-induced obesity. Likewise, much higher numbers of and larger vacuoles were observed in overfed fish macrophages, showing unclear boundaries between the cytoplasm and extracellular space. In the overfed group, the expression of IL-10, HSP70, TLR2, and CD36 was significantly higher, and lymphocyte apoptosis was more evident, indicating that overfeeding-induced obese fish might have immunologic disorders. This was the first study to demonstrate that overfeeding-induced obesity could cause an immune-physiological imbalance in rainbow trout, making them more vulnerable to infectious diseases and various stressful conditions. This study will contribute to improvements in fish nutrition, feeding practices, fish nutrition, and disease prevention in the aquaculture industry.
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Germanà A, Guerrera MC, Laurà R, Levanti M, Aragona M, Mhalhel K, Germanà G, Montalbano G, Abbate F. Expression and Localization of BDNF/TrkB System in the Zebrafish Inner Ear. Int J Mol Sci 2020; 21:ijms21165787. [PMID: 32806650 PMCID: PMC7460859 DOI: 10.3390/ijms21165787] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 08/07/2020] [Accepted: 08/10/2020] [Indexed: 02/07/2023] Open
Abstract
Brain-derived neurotrophic factor (BDNF), a member of the neurotrophin family, is involved in multiple and fundamental functions of the central and peripheral nervous systems including sensory organs. Despite recent advances in knowledge on the functional significance of BDNF and TrkB in the regulation of the acoustic system of mammals, the localization of BDNF/TrkB system in the inner ear of zebrafish during development, is not well known. Therefore, the goal of the present study is to analyze the age-dependent changes using RT-PCR, Western Blot and single and double immunofluorescence of the BDNF and its specific receptor in the zebrafish inner ear. The results showed the mRNA expression and the cell localization of BDNF and TrkB in the hair cells of the crista ampullaris and in the neuroepithelium of the utricle, saccule and macula lagena, analyzed at different ages. Our results demonstrate that the BDNF/TrkB system is present in the sensory cells of the inner ear, during whole life. Therefore, this system might play a key role in the development and maintenance of the hair cells in adults, suggesting that the zebrafish inner ear represents an interesting model to study the involvement of the neurotrophins in the biology of sensory cells
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18
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Abbate F, Guerrera MC, Levanti M, Laurà R, Aragona M, Mhalhel K, Montalbano G, Germanà A. Anatomical, histological and immunohistochemical study of the tongue in the rainbow trout (Oncorhynchus mykiss). Anat Histol Embryol 2020; 49:848-858. [PMID: 32705711 DOI: 10.1111/ahe.12593] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Accepted: 06/28/2020] [Indexed: 12/17/2022]
Abstract
The rainbow trout (Oncorhynchus mykiss Walbaum, 1792) is a fish commercially farmed all over the world. These fish are usually fed, in aquaculture, with pellets rich in proteins and fat. It is well known that there are close relationships among the adaptation of vertebrates to their environment, the capacity and the modality of feeding and the oral cavity morphology, especially the tongue one. No data are so far available about the morphology of the rainbow trout tongue, and therefore, the aim of this study was to investigate by light, scanning electron and confocal laser microscopy, the morphological characteristics of the tongue. An apex, a body and a root can be distinguished in the tongue, and the presence of teeth, taste buds and fungiform-like papillae was demonstrated. Light microscopy shows the presence of an adipose tissue pad in the deeper layer of the apex and in the most superficial layer of the root. In the deeper layer of the body, a triangular-shaped pad consisting of fusiform cells immersed in abundant extracellular matrix of the mesenchymal tissue was observed. The confocal laser microscopy shows the presence of cells with a fibroblast-like morphology positive for vimentin. In the deepest layer of the tongue root, a large area of osteo-cartilaginous tissue was observed. The results, besides the description of the morphological characteristics of the tongue, related to studies regarding the feeding, could be considered for the eventual applications of the use of mesenchymal cells, observed in adult fish, in cell therapies in different pathologies.
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Affiliation(s)
| | | | - Maria Levanti
- Department of Veterinary Sciences, University of Messina, Italy
| | - Rosaria Laurà
- Department of Veterinary Sciences, University of Messina, Italy
| | | | - Kamel Mhalhel
- Department of Veterinary Sciences, University of Messina, Italy
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19
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Blanco AM, Bertucci JI, Hatef A, Unniappan S. Feeding and food availability modulate brain-derived neurotrophic factor, an orexigen with metabolic roles in zebrafish. Sci Rep 2020; 10:10727. [PMID: 32612127 PMCID: PMC7329848 DOI: 10.1038/s41598-020-67535-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Accepted: 06/10/2020] [Indexed: 12/13/2022] Open
Abstract
Emerging findings point to a role for brain-derived neurotrophic factor (BDNF) on feeding in mammals. However, its role on energy balance is unclear. Moreover, whether BDNF regulates energy homeostasis in non-mammals remain unknown. This research aimed to determine whether BDNF is a metabolic peptide in zebrafish. Our results demonstrate that BDNF mRNAs and protein, as well as mRNAs encoding its receptors trkb2, p75ntra and p75ntrb, are detectable in the zebrafish brain, foregut and liver. Intraperitoneal injection of BDNF increased food intake at 1, 2 and 6 h post-administration, and caused an upregulation of brain npy, agrp and orexin, foregut ghrelin, and hepatic leptin mRNAs, and a reduction in brain nucb2. Fasting for 7 days increased bdnf and p75ntrb mRNAs in the foregut, while decreased bdnf, trkb2, p75ntra and p75ntrb mRNAs in the brain and liver. Additionally, the expression of bdnf and its receptors increased preprandially, and decreased after a meal in the foregut and liver. Finally, we observed BDNF-induced changes in the expression and/or activity of enzymes involved in glucose and lipid metabolism in the liver. Overall, present results indicate that BDNF is a novel regulator of appetite and metabolism in fish, which is modulated by energy intake and food availability.
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Affiliation(s)
- Ayelén Melisa Blanco
- Laboratory of Integrative Neuroendocrinology, Department of Veterinary Biomedical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, 52 Campus Drive, Saskatoon, SK, S7N 5B4, Canada
- Laboratorio de Fisioloxía Animal, Departamento de Bioloxía Funcional e Ciencias da Saúde, Facultade de Bioloxía and Centro de Investigación Mariña, Universidade de Vigo, Vigo, Pontevedra, Spain
| | - Juan Ignacio Bertucci
- Laboratory of Integrative Neuroendocrinology, Department of Veterinary Biomedical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, 52 Campus Drive, Saskatoon, SK, S7N 5B4, Canada
- Toxicology Centre, University of Saskatchewan, Saskatoon, SK, Canada
| | - Azadeh Hatef
- Laboratory of Integrative Neuroendocrinology, Department of Veterinary Biomedical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, 52 Campus Drive, Saskatoon, SK, S7N 5B4, Canada
- Toxicology Centre, University of Saskatchewan, Saskatoon, SK, Canada
| | - Suraj Unniappan
- Laboratory of Integrative Neuroendocrinology, Department of Veterinary Biomedical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, 52 Campus Drive, Saskatoon, SK, S7N 5B4, Canada.
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20
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Wiggenhauser LM, Kroll J. Vascular Damage in Obesity and Diabetes: Highlighting Links Between Endothelial Dysfunction and Metabolic Disease in Zebrafish and Man. Curr Vasc Pharmacol 2020; 17:476-490. [PMID: 30378499 DOI: 10.2174/1570161116666181031101413] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Revised: 09/11/2018] [Accepted: 09/25/2018] [Indexed: 02/08/2023]
Abstract
Endothelial dysfunction is an initial pathophysiological mechanism of vascular damage and is further recognized as an independent predictor of negative prognosis in diabetes-induced micro- and macrovascular complications. Insight into the capability of zebrafish to model metabolic disease like obesity and type II diabetes has increased and new evidence on the induction of vascular pathologies in zebrafish through metabolic disease is available. Here, we raise the question, if zebrafish can be utilized to study the initial impairments of vascular complications in metabolic disorders. In this review, we focus on the advances made to develop models of obesity and type II diabetes in zebrafish, discuss the key points and characteristics of these models, while highlighting the available information linked to the development of endothelial dysfunction in zebrafish and man. We show that larval and adult zebrafish develop metabolic dysregulation in the settings of obesity and diabetes, exhibiting pathophysiological mechanisms, which mimic the human condition. The most important genes related to endothelial dysfunction are present in zebrafish and further display similar functions as in mammals. Several suggested contributors to endothelial dysfunction found in these models, namely hyperinsulinaemia, hyperglycaemia, hyperlipidaemia and hyperleptinaemia are highlighted and the available data from zebrafish are summarised. Many underlying processes of endothelial dysfunction in obesity and diabetes are fundamentally present in zebrafish and provide ground for the assumption, that zebrafish can develop endothelial dysfunction. Conservation of basic biological mechanisms is established for zebrafish, but focused investigation on the subject is now needed as validation and particularly more research is necessary to understand the differences between zebrafish and man. The available data demonstrate the relevance of zebrafish as a model for metabolic disease and their ability to become a proponent for the investigation of vascular damage in the settings of obesity and diabetes.
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Affiliation(s)
- Lucas Moritz Wiggenhauser
- Department of Vascular Biology and Tumor Angiogenesis, European Center for Angioscience, Medical Faculty Mannheim, Heidelberg University, 68167 Mannheim, Germany
| | - Jens Kroll
- Department of Vascular Biology and Tumor Angiogenesis, European Center for Angioscience, Medical Faculty Mannheim, Heidelberg University, 68167 Mannheim, Germany
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Effect of light on the calretinin and calbindin expression in skin club cells of adult zebrafish. Histochem Cell Biol 2020; 154:495-505. [PMID: 32435910 DOI: 10.1007/s00418-020-01883-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/07/2020] [Indexed: 02/06/2023]
Abstract
In the last decade, zebrafish has been used as a model for the study of several human skin diseases. The epidermis of Danio rerio is composed of keratinocytes and two types of secretory cells: mucous cells and club cells. Club cells have multiple biological functions and among them may be important in the protection against ultraviolet damage through the proliferative response or through the increased production of protective substances. Calcium-binding proteins such as calbindin D28K and calretinin are used as markers of nervous and enteric nervous systems, but they are present in numerous other cells. These proteins are involved in a wide variety of cell activities, such as cytoskeletal organization, cell motility and differentiation, cell cycle regulation and neuroprotective function. In this study we demonstrated, for the first time, the presence of calretinin and calbindin D28K in skin club cells of Danio rerio exposed to different wavelengths by immunohistochemistry analysis. Exposure to white-blue light and blue light causes the expression and colocalization of calbindin-D28K and calretinin. These proteins were moderately expressed and no colocalization was observed in the club cells of the control fish. In zebrafish exposed to continuous darkness for 10 days, in the club cells the two antibodies did not detect any proteins specifically. These results demonstrate that calbindin and calretinin could be involved in the pathophysiology of skin injury due to exposure to short-wavelength visible light spectrums.
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Abbate F, Guerrera MC, Levanti M, Laurà R, Germanà GP, Montalbano G, Cavallaro M, Germanà A. Morphology of the Atlantic salmon (Salmo salar) tongue. Anat Histol Embryol 2020; 49:686-694. [PMID: 32378253 DOI: 10.1111/ahe.12563] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 02/28/2020] [Accepted: 03/14/2020] [Indexed: 01/09/2023]
Abstract
The Atlantic salmon (Salmo salar) is a freshwater and marine fish of the family Salmonidae, widely farmed in aquaculture facilities in several countries. The salmon are carnivorous, but in aquaculture, alternative foods have been experienced. It is well known that feeding in captivity should cause adaptation and modifications of the morphological characteristics of the oral cavity, especially of tongue; therefore, the aim of this study was to investigate, by light, laser confocal and scanning electron microscopy, the morphological characteristics of the tongue dorsal surface, considering the importance of the correlations between feeding habits and the anatomy of the tongue. Scanning electron microscopy demonstrates the presence of caniniform teeth with oro-aboral orientation surrounded by numerous filiform papillae, single, fused or arranged in row. Oro-aborally, the papillae show an appearance like a rosette and they disappear at level of the root. Light and laser confocal microscopy demonstrates that the mucosa is covered by a non-keratinized stratified pavement epithelium with, in the deepest layer, the presence of a triangular structure whose apex is cranially directed and base facing aborally. In this structure, spindle-shaped cells are present, with a vimentin immunoreactivity, that for their characteristics could be adult mesenchymal stem cells. The obtained data could be useful not only for further studies on the nutrition, but it is interesting the detection of tissues typical of the embryo-fetal phase in the adult specimens tongue, thus giving a basis for studies of potential applications, if any, regarding cell therapies for different clinical indications.
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Affiliation(s)
- Francesco Abbate
- Department of Veterinary Sciences, University of Messina, Messina, Italy
| | | | - Maria Levanti
- Department of Veterinary Sciences, University of Messina, Messina, Italy
| | - Rosaria Laurà
- Department of Veterinary Sciences, University of Messina, Messina, Italy
| | | | | | - Mauro Cavallaro
- Department of Veterinary Sciences, University of Messina, Messina, Italy
| | - Antonino Germanà
- Department of Veterinary Sciences, University of Messina, Messina, Italy
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Effects of a Flavonoid-Rich Extract from Citrus sinensis Juice on a Diet-Induced Obese Zebrafish. Int J Mol Sci 2019; 20:ijms20205116. [PMID: 31619003 PMCID: PMC6834169 DOI: 10.3390/ijms20205116] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Revised: 10/10/2019] [Accepted: 10/11/2019] [Indexed: 12/14/2022] Open
Abstract
Background: Obesity is a pathological condition that has reached epidemic proportions; hence, it is necessary to find novel strategies aimed at fighting this disease. The present study was designed to evaluate the effect of a flavonoid-rich extract of orange (Citrus sinensis) juice (OJe) in diet-induced obese zebrafish. Methods: Adult zebrafish were divided into four diet groups: (i) normally fed (NF); (ii) overfed (OF); (iii) NF supplemented with OJe (5 mL/L in fish water; NF + OJe); and (iv) OF supplemented with OJe (OF + OJe). Each week, body weight (BW) and body mass index (BMI) were measured, and, at the end of the fifth week, euthanized zebrafish were processed for both microscopic evaluations and qPCR analyses. Results: In OF zebrafish, OJe significantly decreased both BW and BMI values and lowered the visceral adipose tissue, while it had little effect in the NF group. Moreover, it significantly reduced adipocyte cell size in both NF and OF groups in both visceral and subcutaneous adipose tissues, as well as their number in OF fish. Finally, OJe modulated some obesity-related genes, such as leptin A, ghrelin, orexin, pro-opiomelanocortin (POMC), and neuropeptide Y (NPY), in both gut and brain. Conclusion: This study adds new insights into the anti-obesity properties of orange juice and its flavonoids, suggesting their role as weight management agents through a lipolytic action linked to a restoration of metabolism-regulating gene expression.
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Abbate F, Guerrera MC, Levanti M, Laurà R, Montalbano G, Cavallaro M, Germanà A. The tongue of Leopard Gecko (Eublepharis macularius): LM, SEM and confocal laser study. Anat Histol Embryol 2019; 49:51-59. [PMID: 31512785 DOI: 10.1111/ahe.12483] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Accepted: 08/04/2019] [Indexed: 12/01/2022]
Abstract
The leopard gecko is a crepuscular and insectivorous reptile. The role of the tongue in this reptile is fundamental for the prey capture and ingestion and is not related with eyes cleaning as usual in other geckos. The elongated tongue can be divided into a foretongue with a slightly bifurcated apex and a hindtongue. Scanning electron microscopy demonstrated that several different papillae are present on the dorsal surface, foliate and dome-shaped in the foretongue, becoming thicker and stouter with reduced interpapillary spaces in the lateral parts. The hindtongue is characterised by wide foliate papillae with indented margins and deep fissures of the mucosa. Light microscopy showed the presence of a stratified slightly keratinized squamous epithelium in the apex of the foretongue, a stratified non-keratinized squamous epithelium in the fore and in the hindtongue. In the foretongue, numerous muciparous caliciform cells were observed. Moreover, the presence of taste buds on the tongue ventral surface was demonstrated for the first time in this species and the confocal laser study revealed a strong immunoreactivity for the S-100 protein in the sensory cells. Therefore, the results obtained could give a contribution to the knowledge of the tongue anatomy and are a basis for eventual further studies regarding the feeding habits in a reptile become a popular pet.
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Affiliation(s)
- Francesco Abbate
- Department of Veterinary Sciences, University of Messina, Messina, Italy
| | | | - Maria Levanti
- Department of Veterinary Sciences, University of Messina, Messina, Italy
| | - Rosaria Laurà
- Department of Veterinary Sciences, University of Messina, Messina, Italy
| | | | - Mauro Cavallaro
- Department of Veterinary Sciences, University of Messina, Messina, Italy
| | - Antonino Germanà
- Department of Veterinary Sciences, University of Messina, Messina, Italy
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25
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Montalbano G, Mania M, Abbate F, Navarra M, Guerrera MC, Laura R, Vega JA, Levanti M, Germanà A. Melatonin treatment suppresses appetite genes and improves adipose tissue plasticity in diet-induced obese zebrafish. Endocrine 2018; 62:381-393. [PMID: 29926348 DOI: 10.1007/s12020-018-1653-x] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2018] [Accepted: 06/12/2018] [Indexed: 12/17/2022]
Abstract
PURPOSE Overweight and obesity are important risk factors for diabetes, cardiovascular diseases, and premature death in modern society. Recently, numerous natural and synthetic compounds have been tested in diet-induced obese animal models, to counteract obesity. Melatonin is a circadian hormone, produced by pineal gland and extra-pineal sources, involved in processes which have in common a rhythmic expression. In teleost, it can control energy balance by activating or inhibiting appetite-related peptides. The study aims at testing effects of melatonin administration to control-fed and overfed zebrafish, in terms of expression levels of orexigenic (Ghrelin, orexin, NPY) and anorexigenic (leptin, POMC) genes expression and morphometry of visceral and subcutaneous fat depots. METHODS Adult male zebrafish (n = 56) were divided into four dietary groups: control, overfed, control + melatonin, overfed + melatonin. The treatment lasted 5 weeks and BMI levels of every fish were measured each week. After this period fishes were sacrificed; morphological and morphometric studies have been carried out on histological sections of adipose tissue and adipocytes. Moreover, whole zebrafish brain and intestine were used for qRT-PCR. RESULTS Our results demonstrate that melatonin supplementation may have an effect in mobilizing fat stores, in increasing basal metabolism and thus in preventing further excess fat accumulation. Melatonin stimulates the anorexigenic and inhibit the orexigenic signals. CONCLUSIONS It seems that adequate melatonin treatment exerts anti-obesity protective effects, also in a diet-induced obesity zebrafish model, that might be the result of the restoration of many factors: the final endpoint reached is weight loss and stabilization of weight gain.
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Affiliation(s)
- G Montalbano
- Department of Veterinary Sciences, University of Messina, Polo Universitario SS. Annunziata, Messina, 98168, Italy.
- Zebrafish Neuromorphology Lab, University of Messina, Polo Universitario SS. Annunziata, Messina, 98168, Italy.
| | - M Mania
- Department of Veterinary Sciences, University of Messina, Polo Universitario SS. Annunziata, Messina, 98168, Italy
| | - F Abbate
- Department of Veterinary Sciences, University of Messina, Polo Universitario SS. Annunziata, Messina, 98168, Italy
- Zebrafish Neuromorphology Lab, University of Messina, Polo Universitario SS. Annunziata, Messina, 98168, Italy
| | - M Navarra
- Department of Drug Sciences and products for Health, University of Messina, Polo Universitario SS. Annunziata, Messina, 98168, Italy
| | - M C Guerrera
- Department of Veterinary Sciences, University of Messina, Polo Universitario SS. Annunziata, Messina, 98168, Italy
- Zebrafish Neuromorphology Lab, University of Messina, Polo Universitario SS. Annunziata, Messina, 98168, Italy
| | - R Laura
- Department of Veterinary Sciences, University of Messina, Polo Universitario SS. Annunziata, Messina, 98168, Italy
| | - J A Vega
- Departamento de Morfología y Biología Celular, Universidad de Oviedo, Oviedo, España, 33006, Spain
- Facultad de Ciencias de la Salud, 5 Poniente 1670, Universidad Autónoma de Chile, Talca, Chile
| | - M Levanti
- Department of Veterinary Sciences, University of Messina, Polo Universitario SS. Annunziata, Messina, 98168, Italy
- Zebrafish Neuromorphology Lab, University of Messina, Polo Universitario SS. Annunziata, Messina, 98168, Italy
| | - A Germanà
- Department of Veterinary Sciences, University of Messina, Polo Universitario SS. Annunziata, Messina, 98168, Italy
- Zebrafish Neuromorphology Lab, University of Messina, Polo Universitario SS. Annunziata, Messina, 98168, Italy
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26
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Howe DG, Blake JA, Bradford YM, Bult CJ, Calvi BR, Engel SR, Kadin JA, Kaufman TC, Kishore R, Laulederkind SJF, Lewis SE, Moxon SAT, Richardson JE, Smith C. Model organism data evolving in support of translational medicine. Lab Anim (NY) 2018; 47:277-289. [PMID: 30224793 PMCID: PMC6322546 DOI: 10.1038/s41684-018-0150-4] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Accepted: 08/13/2018] [Indexed: 02/07/2023]
Abstract
Model organism databases (MODs) have been collecting and integrating biomedical research data for 30 years and were designed to meet specific needs of each model organism research community. The contributions of model organism research to understanding biological systems would be hard to overstate. Modern molecular biology methods and cost reductions in nucleotide sequencing have opened avenues for direct application of model organism research to elucidating mechanisms of human diseases. Thus, the mandate for model organism research and databases has now grown to include facilitating use of these data in translational applications. Challenges in meeting this opportunity include the distribution of research data across many databases and websites, a lack of data format standards for some data types, and sustainability of scale and cost for genomic database resources like MODs. The issues of widely distributed data and application of data standards are some of the challenges addressed by FAIR (Findable, Accessible, Interoperable, and Re-usable) data principles. The Alliance of Genome Resources is now moving to address these challenges by bringing together expertly curated research data from fly, mouse, rat, worm, yeast, zebrafish, and the Gene Ontology consortium. Centralized multi-species data access, integration, and format standardization will lower the data utilization barrier in comparative genomics and translational applications and will provide a framework in which sustainable scale and cost can be addressed. This article presents a brief historical perspective on how the Alliance model organisms are complementary and how they have already contributed to understanding the etiology of human diseases. In addition, we discuss four challenges for using data from MODs in translational applications and how the Alliance is working to address them, in part by applying FAIR data principles. Ultimately, combined data from these animal models are more powerful than the sum of the parts.
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Affiliation(s)
- Douglas G Howe
- The Institute of Neuroscience, University of Oregon, Eugene, OR, USA.
| | | | - Yvonne M Bradford
- The Institute of Neuroscience, University of Oregon, Eugene, OR, USA
| | | | - Brian R Calvi
- Department of Biology, Indiana University, Bloomington, IN, USA
| | - Stacia R Engel
- Department of Genetics, Stanford University, Palo Alto, CA, USA
| | | | | | - Ranjana Kishore
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA, USA
| | - Stanley J F Laulederkind
- Department of Biomedical Engineering, Medical College of Wisconsin and Marquette University, Milwaukee, WI, USA
| | - Suzanna E Lewis
- Environmental Genomics and Systems Biology Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - Sierra A T Moxon
- The Institute of Neuroscience, University of Oregon, Eugene, OR, USA
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27
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Garcia-Suarez O, Cabo R, Abbate F, Randazzo B, Laurà R, Piccione G, Germanà A, Levanti M. Presence and distribution of leptin and its receptor in the gut of adult zebrafish in response to feeding and fasting. Anat Histol Embryol 2018; 47:456-465. [PMID: 29998487 DOI: 10.1111/ahe.12384] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2017] [Revised: 11/07/2017] [Accepted: 06/12/2018] [Indexed: 01/27/2023]
Abstract
Leptin is an anorectic hormone secreted mainly by peripheral adipocytes but also by other central and peripheral tissues. It acts by means of a receptor called OB-R, influencing not only appetite and body mass but being also involved in many fields like endocrinology, metabolism and reproduction. Immunohistochemistry and qRT-PCR techniques were, respectively, used to demonstrate the presence of leptin and its receptor in the gut of adult zebrafish and to evaluate the leptin gene expression response to feeding and fasting. Immunoreactivity for the antibodies utilized was demonstrated in feeding but not in fasting fish, and the gene expression analysis corroborates the data obtained by immunohistochemistry. Therefore, all the obtained results support the hypothesis of the role of this hormone in food regulation in zebrafish.
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Affiliation(s)
- Olivia Garcia-Suarez
- Departamento de Morfología y Biología Celular, Grupo SINPOS, Universidad de Oviedo, Oviedo, Spain
| | - Roberto Cabo
- Departamento de Morfología y Biología Celular, Grupo SINPOS, Universidad de Oviedo, Oviedo, Spain
| | - Francesco Abbate
- Dipartimento di Scienze Veterinarie, Zebrafish Neuromorphology Lab, Università di Messina, Polo Universitario dell'Annunziata, Messina, Italy
| | - Basilio Randazzo
- Dipartimento di Scienze della Vita e dell'Ambiente, Università Politecnica delle Marche, Ancona, Italy
| | - Rosaria Laurà
- Dipartimento di Scienze Veterinarie, Zebrafish Neuromorphology Lab, Università di Messina, Polo Universitario dell'Annunziata, Messina, Italy
| | - Giuseppe Piccione
- Dipartimento di Scienze Veterinarie, Zebrafish Neuromorphology Lab, Università di Messina, Polo Universitario dell'Annunziata, Messina, Italy
| | - Antonino Germanà
- Dipartimento di Scienze Veterinarie, Zebrafish Neuromorphology Lab, Università di Messina, Polo Universitario dell'Annunziata, Messina, Italy
| | - Maria Levanti
- Dipartimento di Scienze Veterinarie, Zebrafish Neuromorphology Lab, Università di Messina, Polo Universitario dell'Annunziata, Messina, Italy
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Néia VBMJC, Ambrosio-Albuquerque EP, Figueiredo IDL, Silva TCD, Lewandowski V, Almeida FLAD, Ribeiro RP, Visentainer JEL, Visentainer JV. Effect of peanut addition to the cafeteria diet on adiposity and inflammation in zebrafish (Danio rerio). FOOD AGR IMMUNOL 2018. [DOI: 10.1080/09540105.2018.1445702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022] Open
Affiliation(s)
| | | | | | | | - Vanessa Lewandowski
- Department of Animal Science, State University of Maringá, Maringá, Paraná, Brazil
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Cacialli P, D'angelo L, Kah O, Coumailleau P, Gueguen MM, Pellegrini E, Lucini C. Neuronal expression of brain derived neurotrophic factor in the injured telencephalon of adult zebrafish. J Comp Neurol 2017; 526:569-582. [PMID: 29124763 DOI: 10.1002/cne.24352] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Revised: 10/17/2017] [Accepted: 10/18/2017] [Indexed: 12/18/2022]
Abstract
The reparative ability of the central nervous system varies widely in the animal kingdom. In the mammalian brain, the regenerative mechanisms are very limited and newly formed neurons do not survive longer, probably due to a non-suitable local environment. On the opposite, fish can repair the brain after injury, with fast and complete recovery of damaged area. The brain of zebrafish, a teleost fish widely used as vertebrate model, also possesses high regenerative properties after injury. Taking advantage of this relevant model, the aim of the present study was to investigate the role of brain-derived neurotrophic factor (BDNF) in the regenerative ability of adult brain, after stab wound telencephalic injury. BDNF is involved in many brain functions and plays key roles in the repair process after traumatic brain lesions. It has been reported that BDNF strengthens the proliferative activity of neuronal precursor cells, facilitates the neuronal migration toward injured areas, and shows survival properties due to its anti-apoptotic effects. BDNF mRNA levels, assessed by quantitative PCR and in situ hybridization at 1, 4, 7, and 15 days after the lesion, were increased in the damaged telencephalon, mostly suddenly after the lesion. Double staining using in situ hybridization and immunocytochemistry revealed that BDNF mRNA was restricted to cells identified as mature neurons. BDNF mRNA expressing neurons mostly increased in the area around the lesion, showing a peak 1 day after the lesion. Taken together, these results highlight the role of BDNF in brain repair processes and reinforce the value of zebrafish for the study of regenerative neurogenesis.
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Affiliation(s)
- Pietro Cacialli
- Department of Veterinary Medicine and Animal Productions, University of Naples Federico II, Napoli, Italy.,Inserm, UMR 1085, Research Institute in Health, Environment and Occupation, SFR Biosit, University of Rennes 1, Rennes, France
| | - Livia D'angelo
- Department of Veterinary Medicine and Animal Productions, University of Naples Federico II, Napoli, Italy
| | - Olivier Kah
- Inserm, UMR 1085, Research Institute in Health, Environment and Occupation, SFR Biosit, University of Rennes 1, Rennes, France
| | - Pascal Coumailleau
- Inserm, UMR 1085, Research Institute in Health, Environment and Occupation, SFR Biosit, University of Rennes 1, Rennes, France
| | - Marie-Madeleine Gueguen
- Inserm, UMR 1085, Research Institute in Health, Environment and Occupation, SFR Biosit, University of Rennes 1, Rennes, France
| | - Elisabeth Pellegrini
- Inserm, UMR 1085, Research Institute in Health, Environment and Occupation, SFR Biosit, University of Rennes 1, Rennes, France
| | - Carla Lucini
- Department of Veterinary Medicine and Animal Productions, University of Naples Federico II, Napoli, Italy
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30
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Cacialli P, D'Angelo L, de Girolamo P, Avallone L, Lucini C, Pellegrini E, Castaldo L. Morpho-Functional Features of the Gonads of Danio rerio: the Role of Brain-Derived Neurotrophic Factor. Anat Rec (Hoboken) 2017; 301:140-147. [PMID: 29024578 DOI: 10.1002/ar.23702] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Revised: 08/16/2017] [Accepted: 08/23/2017] [Indexed: 01/07/2023]
Abstract
Zebrafish, a suitable and widely used teleost fish model in basic biomedical research, displays morphophysiological features of adult gonads that share some commonalities with those of mammalian species. In mammals, gametogenesis is regulated, among several factors, by brain-derived neurotrophic factor (BDNF). This neurotrophin has a well-established role in the developing and adult nervous system, as well as gonads development and functions in vertebrate species. We hypothesize that BDNF has a role also in the gonadal functions of zebrafish. At this purpose, we investigated BDNF and its receptors p75 and TrkB in the ovary and testis of adult zebrafish, kept under laboratory conditions. Our results display (1) the expression of BDNF mRNA and pro-BDNF protein outside of the nervous system, specifically in the ovary and testis; (2) the presence of pro-BDNF in primary oocytes and follicular layer, and p75 in follicular cells; (3) the localization of pro-BDNF in type B spermatogonia, and Sertoli cells in testis. Altogether, these data lead us to consider that BDNF is involved in the gonadal function of adult zebrafish, and mainly in the adult ovary. Anat Rec, 2017. © 2017 Wiley Periodicals, Inc. Anat Rec, 301:140-147, 2018. © 2017 Wiley Periodicals, Inc.
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Affiliation(s)
- Pietro Cacialli
- Department of Veterinary Medicine and Animal Productions, University of Naples Federico II, via F. Delpino, 1 Napoli, Italy.,UFR Sciences de la vie et de l'environnement, Université de Rennes 1, Campus de Beaulieu - Bâtiment 13 263 Avenue Général Leclerc - CS 74205, Rennes Cedex 35042, France
| | - Livia D'Angelo
- Department of Veterinary Medicine and Animal Productions, University of Naples Federico II, via F. Delpino, 1 Napoli, Italy
| | - Paolo de Girolamo
- Department of Veterinary Medicine and Animal Productions, University of Naples Federico II, via F. Delpino, 1 Napoli, Italy
| | - Luigi Avallone
- Department of Veterinary Medicine and Animal Productions, University of Naples Federico II, via F. Delpino, 1 Napoli, Italy
| | - Carla Lucini
- Department of Veterinary Medicine and Animal Productions, University of Naples Federico II, via F. Delpino, 1 Napoli, Italy
| | - Elisabeth Pellegrini
- UFR Sciences de la vie et de l'environnement, Université de Rennes 1, Campus de Beaulieu - Bâtiment 13 263 Avenue Général Leclerc - CS 74205, Rennes Cedex 35042, France
| | - Luciana Castaldo
- Department of Veterinary Medicine and Animal Productions, University of Naples Federico II, via F. Delpino, 1 Napoli, Italy
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31
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Bradford YM, Toro S, Ramachandran S, Ruzicka L, Howe DG, Eagle A, Kalita P, Martin R, Taylor Moxon SA, Schaper K, Westerfield M. Zebrafish Models of Human Disease: Gaining Insight into Human Disease at ZFIN. ILAR J 2017; 58:4-16. [PMID: 28838067 PMCID: PMC5886338 DOI: 10.1093/ilar/ilw040] [Citation(s) in RCA: 89] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Revised: 12/12/2016] [Accepted: 12/19/2016] [Indexed: 12/18/2022] Open
Abstract
The Zebrafish Model Organism Database (ZFIN; https://zfin.org) is the central resource for genetic, genomic, and phenotypic data for zebrafish (Danio rerio) research. ZFIN continuously assesses trends in zebrafish research, adding new data types and providing data repositories and tools that members of the research community can use to navigate data. The many research advantages and flexibility of manipulation of zebrafish have made them an increasingly attractive animal to model and study human disease.To facilitate disease-related research, ZFIN developed support to provide human disease information as well as annotation of zebrafish models of human disease. Human disease term pages at ZFIN provide information about disease names, synonyms, and references to other databases as well as a list of publications reporting studies of human diseases in which zebrafish were used. Zebrafish orthologs of human genes that are implicated in human disease etiology are routinely studied to provide an understanding of the molecular basis of disease. Therefore, a list of human genes involved in the disease with their corresponding zebrafish ortholog is displayed on the disease page, with links to additional information regarding the genes and existing mutations. Studying human disease often requires the use of models that recapitulate some or all of the pathologies observed in human diseases. Access to information regarding existing and published models can be critical, because they provide a tractable way to gain insight into the phenotypic outcomes of the disease. ZFIN annotates zebrafish models of human disease and supports retrieval of these published models by listing zebrafish models on the disease term page as well as by providing search interfaces and data download files to access the data. The improvements ZFIN has made to annotate, display, and search data related to human disease, especially zebrafish models for disease and disease-associated gene information, should be helpful to researchers and clinicians considering the use of zebrafish to study human disease.
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Affiliation(s)
- Yvonne M. Bradford
- Yvonne M. Bradford, PhD, is a scientific curator and senior research associate at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Sabrina Toro, PhD, is a scientific curator for the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Sridhar Ramachandran, MS, is a scientific curator at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Leyla Ruzicka, PhD, is a scientific curator and senior research associate at the Zebrafish Model Organism Database, at the University of Oregon in Eugene, Oregon. Douglas G. Howe, PhD, is the Data Curation Manager at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Anne Eagle, MSCS, is the Software Development and Project Manager at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Patrick Kalita, MS, is a software developer at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Ryan Martin, MS, is a systems administrator at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Sierra A. Taylor Moxon, BA, is the Database Administrator at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Kevin Schaper, BS, is a software engineer at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Monte Westerfield, PhD, is a Professor of Biology in the Institute of Neuroscience and directs the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon.
| | - Sabrina Toro
- Yvonne M. Bradford, PhD, is a scientific curator and senior research associate at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Sabrina Toro, PhD, is a scientific curator for the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Sridhar Ramachandran, MS, is a scientific curator at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Leyla Ruzicka, PhD, is a scientific curator and senior research associate at the Zebrafish Model Organism Database, at the University of Oregon in Eugene, Oregon. Douglas G. Howe, PhD, is the Data Curation Manager at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Anne Eagle, MSCS, is the Software Development and Project Manager at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Patrick Kalita, MS, is a software developer at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Ryan Martin, MS, is a systems administrator at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Sierra A. Taylor Moxon, BA, is the Database Administrator at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Kevin Schaper, BS, is a software engineer at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Monte Westerfield, PhD, is a Professor of Biology in the Institute of Neuroscience and directs the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon.
| | - Sridhar Ramachandran
- Yvonne M. Bradford, PhD, is a scientific curator and senior research associate at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Sabrina Toro, PhD, is a scientific curator for the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Sridhar Ramachandran, MS, is a scientific curator at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Leyla Ruzicka, PhD, is a scientific curator and senior research associate at the Zebrafish Model Organism Database, at the University of Oregon in Eugene, Oregon. Douglas G. Howe, PhD, is the Data Curation Manager at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Anne Eagle, MSCS, is the Software Development and Project Manager at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Patrick Kalita, MS, is a software developer at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Ryan Martin, MS, is a systems administrator at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Sierra A. Taylor Moxon, BA, is the Database Administrator at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Kevin Schaper, BS, is a software engineer at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Monte Westerfield, PhD, is a Professor of Biology in the Institute of Neuroscience and directs the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon.
| | - Leyla Ruzicka
- Yvonne M. Bradford, PhD, is a scientific curator and senior research associate at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Sabrina Toro, PhD, is a scientific curator for the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Sridhar Ramachandran, MS, is a scientific curator at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Leyla Ruzicka, PhD, is a scientific curator and senior research associate at the Zebrafish Model Organism Database, at the University of Oregon in Eugene, Oregon. Douglas G. Howe, PhD, is the Data Curation Manager at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Anne Eagle, MSCS, is the Software Development and Project Manager at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Patrick Kalita, MS, is a software developer at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Ryan Martin, MS, is a systems administrator at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Sierra A. Taylor Moxon, BA, is the Database Administrator at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Kevin Schaper, BS, is a software engineer at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Monte Westerfield, PhD, is a Professor of Biology in the Institute of Neuroscience and directs the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon.
| | - Douglas G. Howe
- Yvonne M. Bradford, PhD, is a scientific curator and senior research associate at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Sabrina Toro, PhD, is a scientific curator for the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Sridhar Ramachandran, MS, is a scientific curator at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Leyla Ruzicka, PhD, is a scientific curator and senior research associate at the Zebrafish Model Organism Database, at the University of Oregon in Eugene, Oregon. Douglas G. Howe, PhD, is the Data Curation Manager at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Anne Eagle, MSCS, is the Software Development and Project Manager at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Patrick Kalita, MS, is a software developer at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Ryan Martin, MS, is a systems administrator at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Sierra A. Taylor Moxon, BA, is the Database Administrator at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Kevin Schaper, BS, is a software engineer at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Monte Westerfield, PhD, is a Professor of Biology in the Institute of Neuroscience and directs the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon.
| | - Anne Eagle
- Yvonne M. Bradford, PhD, is a scientific curator and senior research associate at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Sabrina Toro, PhD, is a scientific curator for the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Sridhar Ramachandran, MS, is a scientific curator at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Leyla Ruzicka, PhD, is a scientific curator and senior research associate at the Zebrafish Model Organism Database, at the University of Oregon in Eugene, Oregon. Douglas G. Howe, PhD, is the Data Curation Manager at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Anne Eagle, MSCS, is the Software Development and Project Manager at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Patrick Kalita, MS, is a software developer at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Ryan Martin, MS, is a systems administrator at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Sierra A. Taylor Moxon, BA, is the Database Administrator at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Kevin Schaper, BS, is a software engineer at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Monte Westerfield, PhD, is a Professor of Biology in the Institute of Neuroscience and directs the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon.
| | - Patrick Kalita
- Yvonne M. Bradford, PhD, is a scientific curator and senior research associate at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Sabrina Toro, PhD, is a scientific curator for the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Sridhar Ramachandran, MS, is a scientific curator at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Leyla Ruzicka, PhD, is a scientific curator and senior research associate at the Zebrafish Model Organism Database, at the University of Oregon in Eugene, Oregon. Douglas G. Howe, PhD, is the Data Curation Manager at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Anne Eagle, MSCS, is the Software Development and Project Manager at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Patrick Kalita, MS, is a software developer at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Ryan Martin, MS, is a systems administrator at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Sierra A. Taylor Moxon, BA, is the Database Administrator at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Kevin Schaper, BS, is a software engineer at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Monte Westerfield, PhD, is a Professor of Biology in the Institute of Neuroscience and directs the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon.
| | - Ryan Martin
- Yvonne M. Bradford, PhD, is a scientific curator and senior research associate at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Sabrina Toro, PhD, is a scientific curator for the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Sridhar Ramachandran, MS, is a scientific curator at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Leyla Ruzicka, PhD, is a scientific curator and senior research associate at the Zebrafish Model Organism Database, at the University of Oregon in Eugene, Oregon. Douglas G. Howe, PhD, is the Data Curation Manager at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Anne Eagle, MSCS, is the Software Development and Project Manager at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Patrick Kalita, MS, is a software developer at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Ryan Martin, MS, is a systems administrator at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Sierra A. Taylor Moxon, BA, is the Database Administrator at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Kevin Schaper, BS, is a software engineer at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Monte Westerfield, PhD, is a Professor of Biology in the Institute of Neuroscience and directs the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon.
| | - Sierra A. Taylor Moxon
- Yvonne M. Bradford, PhD, is a scientific curator and senior research associate at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Sabrina Toro, PhD, is a scientific curator for the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Sridhar Ramachandran, MS, is a scientific curator at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Leyla Ruzicka, PhD, is a scientific curator and senior research associate at the Zebrafish Model Organism Database, at the University of Oregon in Eugene, Oregon. Douglas G. Howe, PhD, is the Data Curation Manager at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Anne Eagle, MSCS, is the Software Development and Project Manager at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Patrick Kalita, MS, is a software developer at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Ryan Martin, MS, is a systems administrator at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Sierra A. Taylor Moxon, BA, is the Database Administrator at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Kevin Schaper, BS, is a software engineer at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Monte Westerfield, PhD, is a Professor of Biology in the Institute of Neuroscience and directs the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon.
| | - Kevin Schaper
- Yvonne M. Bradford, PhD, is a scientific curator and senior research associate at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Sabrina Toro, PhD, is a scientific curator for the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Sridhar Ramachandran, MS, is a scientific curator at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Leyla Ruzicka, PhD, is a scientific curator and senior research associate at the Zebrafish Model Organism Database, at the University of Oregon in Eugene, Oregon. Douglas G. Howe, PhD, is the Data Curation Manager at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Anne Eagle, MSCS, is the Software Development and Project Manager at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Patrick Kalita, MS, is a software developer at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Ryan Martin, MS, is a systems administrator at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Sierra A. Taylor Moxon, BA, is the Database Administrator at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Kevin Schaper, BS, is a software engineer at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Monte Westerfield, PhD, is a Professor of Biology in the Institute of Neuroscience and directs the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon.
| | - Monte Westerfield
- Yvonne M. Bradford, PhD, is a scientific curator and senior research associate at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Sabrina Toro, PhD, is a scientific curator for the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Sridhar Ramachandran, MS, is a scientific curator at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Leyla Ruzicka, PhD, is a scientific curator and senior research associate at the Zebrafish Model Organism Database, at the University of Oregon in Eugene, Oregon. Douglas G. Howe, PhD, is the Data Curation Manager at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Anne Eagle, MSCS, is the Software Development and Project Manager at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Patrick Kalita, MS, is a software developer at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Ryan Martin, MS, is a systems administrator at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Sierra A. Taylor Moxon, BA, is the Database Administrator at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Kevin Schaper, BS, is a software engineer at the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon. Monte Westerfield, PhD, is a Professor of Biology in the Institute of Neuroscience and directs the Zebrafish Model Organism Database at the University of Oregon in Eugene, Oregon.
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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] [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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33
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Seebacher F, Tallis J, McShea K, James RS. Obesity-induced decreases in muscle performance are not reversed by weight loss. Int J Obes (Lond) 2017; 41:1271-1278. [PMID: 28337027 DOI: 10.1038/ijo.2017.81] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Revised: 02/22/2017] [Accepted: 03/14/2017] [Indexed: 02/06/2023]
Abstract
BACKGROUND/OBJECTIVES Obesity can affect muscle phenotypes, and may thereby constrain movement and energy expenditure. Weight loss is a common and intuitive intervention for obesity, but it is not known whether the effects of obesity on muscle function are reversible by weight loss. Here we tested whether obesity-induced changes in muscle metabolic and contractile phenotypes are reversible by weight loss. SUBJECTS/METHODS We used zebrafish (Danio rerio) in a factorial design to compare energy metabolism, locomotor capacity, muscle isometric force and work-loop power output, and myosin heavy chain (MHC) composition between lean fish, diet-induced obese fish, and fish that were obese and then returned to lean body mass following diet restriction. RESULTS Obesity increased resting metabolic rates (P<0.001) and decreased maximal metabolic rates (P=0.030), but these changes were reversible by weight loss, and were not associated with changes in muscle citrate synthase activity. In contrast, obesity-induced decreases in locomotor performance (P=0.0034), and isolated muscle isometric stress (P=0.01), work-loop power output (P<0.001) and relaxation rates (P=0.012) were not reversed by weight loss. Similarly, obesity-induced decreases in concentrations of fast and slow MHCs, and a shift toward fast MHCs were not reversed by weight loss. CONCLUSION Obesity-induced changes in locomotor performance and muscle contractile function were not reversible by weight loss. These results show that weight loss alone may not be a sufficient intervention.
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Affiliation(s)
- F Seebacher
- School of Life and Environmental Sciences, University of Sydney, Sydney, NSW, Australia
| | - J Tallis
- Centre for Applied Biological and Exercise Sciences, Coventry University, Coventry, UK
| | - K McShea
- School of Life and Environmental Sciences, University of Sydney, Sydney, NSW, Australia
| | - R S James
- Centre for Applied Biological and Exercise Sciences, Coventry University, Coventry, UK
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