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Wu C, Xu M, Dong J, Cui W, Yuan S. The structure and function of olfactory receptors. Trends Pharmacol Sci 2024; 45:268-280. [PMID: 38296675 DOI: 10.1016/j.tips.2024.01.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Revised: 01/08/2024] [Accepted: 01/09/2024] [Indexed: 02/02/2024]
Abstract
Olfactory receptors (ORs) form the most important chemosensory receptor family responsible for our sense of smell in the nasal olfactory epithelium. This receptor family belongs to the class A G protein-coupled receptors (GPCRs). Recent research has indicated that ORs are involved in many nonolfactory physiological processes in extranasal tissue, such as the brain, pancreas, and testes, and implies the possible role of their dysregulation in various diseases. The recently released structures of OR51E2 and consensus OR52 have also unveiled the uniqueness of ORs from other class A GPCR members. In this review, we discuss these recent developments and computational modeling efforts toward understanding the structural properties of unresolved ORs, which could guide potential future OR-targeted drug discovery.
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Affiliation(s)
- Chenyang Wu
- The AlphaMol-SIAT Joint Laboratory, Shenzhen 518055, China; The Research Center for Computer-aided Drug Discovery, The Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Marc Xu
- The AlphaMol-SIAT Joint Laboratory, Shenzhen 518055, China; The Research Center for Computer-aided Drug Discovery, The Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Junlin Dong
- The AlphaMol-SIAT Joint Laboratory, Shenzhen 518055, China; The Research Center for Computer-aided Drug Discovery, The Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Wenqiang Cui
- The AlphaMol-SIAT Joint Laboratory, Shenzhen 518055, China
| | - Shuguang Yuan
- The AlphaMol-SIAT Joint Laboratory, Shenzhen 518055, China; AlphaMol Science Ltd, Shenzhen 518055, China.
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2
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Bonetti A, Toschi A, Tugnoli B, Piva A, Grilli E. A blend of selected botanicals maintains intestinal epithelial integrity and reduces susceptibility to Escherichia coli F4 infection by modulating acute and chronic inflammation in vitro. Front Vet Sci 2023; 10:1275802. [PMID: 37841479 PMCID: PMC10570737 DOI: 10.3389/fvets.2023.1275802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Accepted: 09/12/2023] [Indexed: 10/17/2023] Open
Abstract
In the pig production cycle, the most delicate phase is weaning, a sudden and early change that requires a quick adaptation, at the cost of developing inflammation and oxidation, especially at the intestinal level. In this period, pathogens like enterotoxigenic Escherichia coli (ETEC) contribute to the establishment of diarrhea, with long-lasting detrimental effects. Botanicals and their single bioactive components represent sustainable well-recognized tools in animal nutrition thanks to their wide-ranging beneficial functions. The aim of this study was to investigate the in vitro mechanism of action of a blend of botanicals (BOT), composed of thymol, grapeseed extract, and capsicum oleoresin, in supporting intestinal cell health during inflammatory challenges and ETEC infections. To reach this, we performed inflammatory and ETEC challenges on Caco-2 cells treated with BOT, measuring epithelial integrity, cellular oxidative stress, bacterial translocation and adhesion, gene expression levels, and examining tight junction distribution. BOT protected enterocytes against acute inflammation: while the challenge reduced epithelial tightness by 40%, BOT significantly limited its drop to 30%, also allowing faster recovery rates. In the case of chronic inflammation, BOT systematically improved by an average of 25% the integrity of challenged cells (p < 0.05). Moreover, when cells were infected with ETEC, BOT maintained epithelial integrity at the same level as an effective antibiotic and significantly reduced bacterial translocation by 1 log average. The mode of action of BOT was strictly related to the modulation of the inflammatory response, protecting tight junctions' expression and structure. In addition, BOT influenced ETEC adhesion to intestinal cells (-4%, p < 0.05), also thanks to the reduction of enterocytes' susceptibility to pathogens. Finally, BOT effectively scavenged reactive oxygen species generated by inflammatory and H2O2 challenges, thus alleviating oxidative stress by 40% compared to challenge (p < 0.05). These results support the employment of BOT in piglets at weaning to help manage bacterial infections and relieve transient or prolonged stressful states thanks to the modulation of host-pathogen interaction and the fine-tuning activity on the inflammatory tone.
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Affiliation(s)
- Andrea Bonetti
- Dipartimento di Scienze Mediche Veterinarie (DIMEVET), Università di Bologna, Ozzano dell’Emilia, Bologna, Italy
| | | | | | - Andrea Piva
- Dipartimento di Scienze Mediche Veterinarie (DIMEVET), Università di Bologna, Ozzano dell’Emilia, Bologna, Italy
- Vetagro S.p.A., Reggio Emilia, Italy
| | - Ester Grilli
- Dipartimento di Scienze Mediche Veterinarie (DIMEVET), Università di Bologna, Ozzano dell’Emilia, Bologna, Italy
- Vetagro Inc., Chicago, IL, United States
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Bialkowski S, Toschi A, Yu LE, Schlitzkus L, Mann P, Grilli E, Li Y. Effects of microencapsulated blend of organic acids and botanicals on growth performance, intestinal barrier function, inflammatory cytokines, and endocannabinoid system gene expression in broiler chickens. Poult Sci 2023; 102:102460. [PMID: 36680863 PMCID: PMC10014334 DOI: 10.1016/j.psj.2022.102460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Revised: 12/12/2022] [Accepted: 12/25/2022] [Indexed: 12/30/2022] Open
Abstract
With restricted usage of growth-promoting antibiotics, identifying alternative feed additives that both improve intestinal barrier function and reduce inflammation is the center to improve chickens' health. This study examined the effects of a microencapsulated feed additive containing citric acid, sorbic acids, thymol, and vanillin on intestinal barrier function and inflammation status. A total of 240 birds were assigned to either a commercial control diet or control diet supplemented with 500 g/MT of the microencapsulated additive product. Birds were raised by feeding a 2-phase diet (starter, d 1 to d 21; and grower, d 15 to d 42). Growth performance was recorded weekly. At d 21 and d 42, total gastrointestinal tract permeability was evaluated by FITC-dextran (FD4) oral gavage. Jejunum-specific barrier functions were evaluated by Ussing chamber. Intestinal gene expression of selected epithelial cell markers, tight junction (TJ) proteins, inflammatory cytokines, and endocannabinoid system (ECS) markers were determined by RT-PCR. Statistical analysis was performed using Student t test. Results showed significant improvement of feed efficiency in the birds supplemented with the blend of organic acids and botanicals. At d 21, both oral and jejunal FD4 permeability were lower in the supplemented group. Jejunal transepithelial resistance was higher in the supplemented birds. At d 21, expression of TJs mRNA (CLDN1 and ZO2) was both upregulated in the jejunum and ileum of supplemented birds, while CLDN2 was downregulated in cecum. Proliferating cell marker SOX9 was higher expressed in jejunum and ceca. Goblet cell marker (MUC2) was upregulated, while Paneth cell marker (LYZ) was downregulated in the ileum. Proinflammatory cytokine expressions of IL1B, TNFA, and IFNG were downregulated in jejunum, while anti-inflammatory IL10 expression was higher in jejunum, ileum, cecum, and cecal tonsil. The ECS markers expressions were upregulated in most intestinal regions. Together, these results demonstrated that the blend of organic acids and botanical supplementation reduced inflammation, improved the TJs expression and intestinal barrier function, and thus improved chicken feed efficiency. The activated ECS may play a role in reducing intestinal tissue inflammation.
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Affiliation(s)
- Sofia Bialkowski
- Department of Animal and Food Sciences, University of Delaware, Newark, DE, USA
| | | | - Liang-En Yu
- Department of Animal and Food Sciences, University of Delaware, Newark, DE, USA
| | - Lydia Schlitzkus
- Department of Animal and Food Sciences, University of Delaware, Newark, DE, USA
| | - Peter Mann
- Department of Animal and Food Sciences, University of Delaware, Newark, DE, USA
| | - Ester Grilli
- DIMEVET, University of Bologna, 40064 Ozzano Emilia, Bologna, Italy; Vetagro Inc., 60604 Chicago, IL, USA
| | - Yihang Li
- Department of Animal and Food Sciences, University of Delaware, Newark, DE, USA.
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Matera R, Lucchi E, Valgimigli L. Plant Essential Oils as Healthy Functional Ingredients of Nutraceuticals and Diet Supplements: A Review. Molecules 2023; 28:molecules28020901. [PMID: 36677959 PMCID: PMC9862182 DOI: 10.3390/molecules28020901] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 01/09/2023] [Accepted: 01/12/2023] [Indexed: 01/18/2023] Open
Abstract
Essential oils (EOs) are mixtures of volatile molecules endowed with health-promoting biological activities that go beyond their role as aromas and natural preservatives and can be exploited to develop functional foods and diet supplements. Their composition is briefly addressed along with regulatory aspects. The potential health benefit of human diet supplementation with EOs is outlined through a review of the recent literature on available clinical trials and preclinical research concerning EOs activity towards: (1) irritable bowel syndrome; (2) inflammatory bowel disease; (3) regulation of microbiota; (4) gastroprotection; (5) hepatoprotection; (6) protection of the urinary tract and diuresis; (7) management of metabolic disorders including hyperglycemia and hyperlipidemia; (8) anti-inflammatory and pain control; (9) immunomodulation and protection from influenza; and (10) neuroprotection and modulation of mood and cognitive performance. The emerging potential in such activities of selected EOs is given focus, particularly green and black cumin, bergamot, orange, myrtle, peppermint, sage, eucalyptus, lavender, thyme, lemon balm, ginger, and garlic.
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Affiliation(s)
- Riccardo Matera
- BeC s.r.l., Research & Development, Via C. Monteverdi 49, 47122 Forlì, Italy
| | - Elena Lucchi
- BeC s.r.l., Research & Development, Via C. Monteverdi 49, 47122 Forlì, Italy
| | - Luca Valgimigli
- Department of Chemistry “Ciamician”, University of Bologna, Via S. Giacomo 11, 40126 Bologna, Italy
- Correspondence: ; Tel.: +30-051-2095683
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Bonetti A, Piva A, Grilli E. Botanicals as a zinc oxide alternative to protect intestinal cells from an Escherichia coli F4 infection in vitro by modulation of enterocyte inflammatory response and bacterial virulence. Front Vet Sci 2023; 10:1141561. [PMID: 36968476 PMCID: PMC10033929 DOI: 10.3389/fvets.2023.1141561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Accepted: 02/22/2023] [Indexed: 03/29/2023] Open
Abstract
Pharmacological doses of zinc oxide (ZnO) have been widely used in pig industry to control post-weaning diarrhea (PWD) symptoms exacerbated by enterotoxigenic Escherichia coli F4 infections. Because of environmental issues and regulatory restrictions, ZnO is no longer sustainable, and novel nutritional alternatives to manage PWD are urgently required. Botanicals represent a wide class of compounds employed in animal nutrition because of their diverse beneficial functions. The aim of this study was to investigate the in vitro protective action of a panel of essential oils and natural extracts on intestinal Caco-2 cells against an E. coli F4 infection. Moreover, we explored the potential mechanisms of action of all the botanicals compared to ZnO. Amongst the others, thyme essential oil, grape seed extract, and Capsicum oleoresin were the most effective in maintaining epithelial integrity and reducing bacterial translocation. Their mechanism of action was related to the modulation of cellular inflammatory response, the protection of tight junctions' expression and function, and the control of bacterial virulence, thus resembling the positive functions of ZnO. Moreover, despite their mild effects on the host side, ginger and tea tree essential oils provided promising results in the control of pathogen adhesion when employed during the challenge. These outcomes support the advantages of employing selected botanicals to manage E. coli F4 infections in vitro, therefore offering novel environmentally-friendly alternatives to pharmacological doses of ZnO capable to modulate host-pathogen interaction at different levels during PWD in pigs.
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Affiliation(s)
- Andrea Bonetti
- Dipartimento di Scienze Mediche Veterinarie, Università di Bologna, Bologna, Italy
| | - Andrea Piva
- Dipartimento di Scienze Mediche Veterinarie, Università di Bologna, Bologna, Italy
- Vetagro S.p.A., Reggio Emilia, Italy
| | - Ester Grilli
- Dipartimento di Scienze Mediche Veterinarie, Università di Bologna, Bologna, Italy
- Vetagro Inc., Chicago, IL, United States
- *Correspondence: Ester Grilli
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Phenol-Rich Botanicals Modulate Oxidative Stress and Epithelial Integrity in Intestinal Epithelial Cells. Animals (Basel) 2022; 12:ani12172188. [PMID: 36077907 PMCID: PMC9454507 DOI: 10.3390/ani12172188] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 08/19/2022] [Accepted: 08/23/2022] [Indexed: 12/16/2022] Open
Abstract
Botanicals are mainly known for their role as antimicrobials and anti-inflammatories. Thus, the dual purpose of the study was to verify the antioxidant potential of the tested botanicals and to evaluate their possible modulation of intestinal barrier integrity. As the effects of various phenol-rich extracts were screened, the human Caco-2 cell line was determined to be most suitable for use as the in vitro model for the intestinal epithelium. The tested botanicals, all approved as feed additives, are ginger essential oil, tea tree oil, grape seed extract, green tea extract, olive extract, chestnut extract, pomegranate extract, thyme essential oil, and capsicum oleoresin. The cells were treated with incremental doses of each botanical, followed by measurements of transepithelial electrical resistance (TEER), gene expression of tight junctions (TJs), and reactive oxygen species (ROS). The results showed how different phenol-rich botanicals could modulate barrier functions and oxidative stress in different ways. Interestingly, all the botanicals tested exerted an antioxidant potential by dropping the cytoplasmatic ROS, while the beneficial effect was exerted at different concentrations for each botanical. Our data support the role of plant extracts and essential oils in controlling gut barrier function and in reducing the negative effects of oxidative stress in intestinal epithelial cells, thereby supporting gut barrier functionality.
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Abdelnour SA, El-Ratel IT, Peris SI, El-Raghi AA, Fouda SF. Effects of dietary thyme essential oil on blood haematobiochemical, redox status, immunological and reproductive variables of rabbit does exposed to high environmental temperature. ITALIAN JOURNAL OF ANIMAL SCIENCE 2022. [DOI: 10.1080/1828051x.2021.2006807] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Sameh A. Abdelnour
- Department of Animal Production, Faculty of Agriculture, Zagazig University, Zagazig, Egypt
| | - Ibrahim T. El-Ratel
- Department of Poultry Production, Faculty of Agriculture, Damietta University, Damietta, Egypt
| | - Soliman I. Peris
- Department of Animal Production, Faculty of Agriculture, Zagazig University, Zagazig, Egypt
| | - Ali Ali El-Raghi
- Department of Animal Production, Faculty of Agriculture, Damietta University, Damietta, Egypt
| | - Sara F. Fouda
- Department of Poultry Production, Faculty of Agriculture, Mansoura University, Mansoura, Egypt
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Li L, Sun X, Zhao D, Dai H. Pharmacological Applications and Action Mechanisms of Phytochemicals as Alternatives to Antibiotics in Pig Production. Front Immunol 2021; 12:798553. [PMID: 34956234 PMCID: PMC8695855 DOI: 10.3389/fimmu.2021.798553] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Accepted: 11/22/2021] [Indexed: 12/13/2022] Open
Abstract
Antibiotics are widely used for infectious diseases and feed additives for animal health and growth. Antibiotic resistant caused by overuse of antibiotics poses a global health threat. It is urgent to choose safe and environment-friendly alternatives to antibiotics to promote the ecological sustainable development of the pig industry. Phytochemicals are characterized by little residue, no resistance, and minimal side effects and have been reported to improve animal health and growth performance in pigs, which may become a promising additive in pig production. This paper summarizes the biological functions of recent studies of phytochemicals on growth performance, metabolism, antioxidative capacity, gut microbiota, intestinal mucosa barrier, antiviral, antimicrobial, immunomodulatory, detoxification of mycotoxins, as well as their action mechanisms in pig production. The review may provide the theoretical basis for the application of phytochemicals functioning as alternative antibiotic additives in the pig industry.
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Affiliation(s)
- Lexing Li
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Xueyan Sun
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Dai Zhao
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Hanchuan Dai
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
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Cinnamaldehyde Induces Release of Cholecystokinin and Glucagon-Like Peptide 1 by Interacting with Transient Receptor Potential Ankyrin 1 in a Porcine Ex-Vivo Intestinal Segment Model. Animals (Basel) 2021; 11:ani11082262. [PMID: 34438718 PMCID: PMC8388503 DOI: 10.3390/ani11082262] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 07/28/2021] [Accepted: 07/29/2021] [Indexed: 11/17/2022] Open
Abstract
Cinnamaldehyde and capsaicin have been reported to exert effects on the gastric function, mediated by the interaction with transient receptor potential ankyrin channel 1 (TRPA1) and transient receptor potential vanilloid channel 1 (TRPV1), respectively. This study examined whether these compounds could trigger the release of cholecystokinin (CCK) and/or glucagon-like peptide 1 (GLP-1) in the pig's gut in a porcine ex-vivo intestinal segment model. Furthermore, it was verified whether this response was mediated by TRPA1 or TRPV1 by using the channel's antagonist. These gut peptides play a key role in the "intestinal brake", a feedback mechanism that influences the function of proximal parts of the gut. Structural analogues of cinnamaldehyde were screened as well, to explore structure-dependent activation. Results showed a significant effect of capsaicin on GLP-1 release in the proximal small intestine, TRPV1 independent. TRPA1 showed to be strongly activated by cinnamaldehyde, both in proximal and distal small intestine, evidenced by the release of CCK and GLP-1, respectively. Out of all structural derivates, cinnamaldehyde showed the highest affinity for TRPA1, which elucidates the importance of the α,β-unsaturated aldehyde moiety. In conclusion, cinnamaldehyde as a TRPA1 agonist, is a promising candidate to modulate gastric function, by activating intestinal brake mechanisms.
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Dietary alternatives to in-feed antibiotics, gut barrier function and inflammation in piglets post-weaning: Where are we now? Anim Feed Sci Technol 2021. [DOI: 10.1016/j.anifeedsci.2021.114836] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Toschi A, Galiazzo G, Piva A, Tagliavia C, Mazzuoli-Weber G, Chiocchetti R, Grilli E. Cannabinoid and Cannabinoid-Related Receptors in the Myenteric Plexus of the Porcine Ileum. Animals (Basel) 2021; 11:263. [PMID: 33494452 PMCID: PMC7912003 DOI: 10.3390/ani11020263] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 01/16/2021] [Accepted: 01/19/2021] [Indexed: 12/29/2022] Open
Abstract
An important piece of evidence has shown that molecules acting on cannabinoid receptors influence gastrointestinal motility and induce beneficial effects on gastrointestinal inflammation and visceral pain. The aim of this investigation was to immunohistochemically localize the distribution of canonical cannabinoid receptor type 1 (CB1R) and type 2 (CB2R) and the cannabinoid-related receptors transient potential vanilloid receptor 1 (TRPV1), transient potential ankyrin receptor 1 (TRPA1), and serotonin receptor 5-HT1a (5-HT1aR) in the myenteric plexus (MP) of pig ileum. CB1R, TRPV1, TRPA1, and 5-HT1aR were expressed, with different intensities in the cytoplasm of MP neurons. For each receptor, the proportions of the immunoreactive neurons were evaluated using the anti-HuC/HuD antibody. These receptors were also localized on nerve fibers (CB1R, TRPA1), smooth muscle cells of tunica muscularis (CB1R, 5-HT1aR), and endothelial cells of blood vessels (TRPV1, TRPA1, 5-HT1aR). The nerve varicosities were also found to be immunoreactive for both TRPV1 and 5-HT1aR. No immunoreactivity was documented for CB2R. Cannabinoid and cannabinoid-related receptors herein investigated showed a wide distribution in the enteric neurons and nerve fibers of the pig MP. These results could provide an anatomical basis for additional research, supporting the therapeutic use of cannabinoid receptor agonists in relieving motility disorders in porcine enteropathies.
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Affiliation(s)
- Andrea Toschi
- Department of Veterinary Medical Sciences (UNI EN ISO 9001:2008), University of Bologna, Via Tolara di Sopra, 50, 40064 Ozzano dell’Emilia, Italy; (A.T.); (G.G.); (A.P.); (C.T.); (E.G.)
| | - Giorgia Galiazzo
- Department of Veterinary Medical Sciences (UNI EN ISO 9001:2008), University of Bologna, Via Tolara di Sopra, 50, 40064 Ozzano dell’Emilia, Italy; (A.T.); (G.G.); (A.P.); (C.T.); (E.G.)
| | - Andrea Piva
- Department of Veterinary Medical Sciences (UNI EN ISO 9001:2008), University of Bologna, Via Tolara di Sopra, 50, 40064 Ozzano dell’Emilia, Italy; (A.T.); (G.G.); (A.P.); (C.T.); (E.G.)
- R&D Division, Vetagro S.p.A., via Porro 2, 42124 Reggio Emilia, Italy
| | - Claudio Tagliavia
- Department of Veterinary Medical Sciences (UNI EN ISO 9001:2008), University of Bologna, Via Tolara di Sopra, 50, 40064 Ozzano dell’Emilia, Italy; (A.T.); (G.G.); (A.P.); (C.T.); (E.G.)
| | - Gemma Mazzuoli-Weber
- Institute for Physiology and Cell Biology, University of Veterinary Medicine Hannover, Foundation, Bischofsholer Damm 15, 30173 Hannover, Germany;
| | - Roberto Chiocchetti
- Department of Veterinary Medical Sciences (UNI EN ISO 9001:2008), University of Bologna, Via Tolara di Sopra, 50, 40064 Ozzano dell’Emilia, Italy; (A.T.); (G.G.); (A.P.); (C.T.); (E.G.)
| | - Ester Grilli
- Department of Veterinary Medical Sciences (UNI EN ISO 9001:2008), University of Bologna, Via Tolara di Sopra, 50, 40064 Ozzano dell’Emilia, Italy; (A.T.); (G.G.); (A.P.); (C.T.); (E.G.)
- R&D Division, Vetagro, Inc., 116 W. Jackson Blvd., Suite #320, Chicago, IL 60604, USA
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