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Ma X, Wang L, Li J, Guo Y, He S. The pathogenicity and immune effects of different generations of Mycoplasma synoviae on chicken embryos. Br Poult Sci 2024; 65:19-27. [PMID: 38018666 DOI: 10.1080/00071668.2023.2287733] [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: 08/31/2023] [Accepted: 11/05/2023] [Indexed: 11/30/2023]
Abstract
1. Mycoplasma synoviae (MS) is the primary causative agent of synovitis in avian species. In order to investigate the pathogenicity and immunological responses associated with MS in specific pathogen-free chicken embryos, a series of generations (F1, F95, F120, F160 and F200) of MS were introduced into 7-day-old SPF chicken embryos and subsequent mortality rates were recorded and analysed2. Reverse transcription-quantitative polymerase chain reaction was performed to detect expression of heat shock proteins HSP27, HSP40, HSP60, HSP70 and HSP90 and inflammatory factors interleukin (IL)-1β, caspase-1 and IL-18 in the tracheal tissue.3. The results showed that the mortality rate of SPF chicken embryos decreased with an increase in the number of passages, with the highest being 80% (8/10) for F1 generation and the lowest being 10% (1/10) for F200. The expression of HSP27, IL-1β, HSP40, caspase-1, HSP70 and HSP90 showed a significant downregulation trend with an increase in the generation (except IL-18; P < 0.05). The HSP60 expression was significantly upregulated with increasing generations (P < 0.05).4. A relationship between pathogenicity and the number of passages was observed and the decrease in pathogenicity appeared to be associated with HSP and genes related to inflammatory factors. The present work offers a scientific foundation for screening potential MS strains that might be employed to develop attenuated vaccines.
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Affiliation(s)
- X Ma
- School of Animal Science and Technology, Ningxia University, Yinchuan, Ningxia, China
| | - L Wang
- School of Animal Science and Technology, Ningxia University, Yinchuan, Ningxia, China
| | - J Li
- School of Animal Science and Technology, Ningxia University, Yinchuan, Ningxia, China
| | - Y Guo
- Ningxia Academy of Agricultural and Forestry Science's Yinchuan, Institute of Animal Science, Yinchuan, Ningxia, China
| | - S He
- School of Animal Science and Technology, Ningxia University, Yinchuan, Ningxia, China
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McQuade RM, Stojanovska V, Stavely R, Timpani C, Petersen AC, Abalo R, Bornstein JC, Rybalka E, Nurgali K. Oxaliplatin-induced enteric neuronal loss and intestinal dysfunction is prevented by co-treatment with BGP-15. Br J Pharmacol 2018; 175:656-677. [PMID: 29194564 DOI: 10.1111/bph.14114] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Accepted: 11/21/2017] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND AND PURPOSE Gastrointestinal side effects of chemotherapy are an under-recognized clinical problem, leading to dose reduction, delays and cessation of treatment, presenting a constant challenge for efficient and tolerated anti-cancer treatment. We have found that oxaliplatin treatment results in intestinal dysfunction, oxidative stress and loss of enteric neurons. BGP-15 is a novel cytoprotective compound with potential HSP72 co-inducing and PARP inhibiting properties. In this study, we investigated the potential of BGP-15 to alleviate oxaliplatin-induced enteric neuropathy and intestinal dysfunction. EXPERIMENTAL APPROACH Balb/c mice received oxaliplatin (3 mg·kg-1 ·day-1 ) with and without BGP-15 (15 mg·kg-1 ·day-1 : i.p.) tri-weekly for 14 days. Gastrointestinal transit was analysed via in vivo X-ray imaging, before and after treatment. Colons were collected to assess ex vivo motility, neuronal mitochondrial superoxide and cytochrome c levels and for immunohistochemical analysis of myenteric neurons. KEY RESULTS Oxaliplatin-induced neuronal loss increased the proportion of neuronal NO synthase-immunoreactive neurons and increased levels of mitochondrial superoxide and cytochrome c in the myenteric plexus. These changes were correlated with an increase in PARP-2 immunoreactivity in the colonic mucosa and were attenuated by BGP-15 co-treatment. Significant delays in gastrointestinal transit, intestinal emptying and pellet formation, impaired colonic motor activity, reduced faecal water content and lack of weight gain associated with oxaliplatin treatment were restored to sham levels in mice co-treated with BGP-15. CONCLUSION AND IMPLICATIONS Our results showed that BGP-15 ameliorated oxidative stress, increased enteric neuronal survival and alleviated oxaliplatin-induced intestinal dysfunction, suggesting that BGP-15 may relieve the gastrointestinal side effects of chemotherapy.
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Affiliation(s)
- Rachel M McQuade
- College of Health and Biomedicine, Victoria University, Melbourne, VIC, Australia
| | - Vanesa Stojanovska
- College of Health and Biomedicine, Victoria University, Melbourne, VIC, Australia
| | - Rhian Stavely
- College of Health and Biomedicine, Victoria University, Melbourne, VIC, Australia.,Department of Medicine, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Regenerative Medicine and Stem Cells Program, Australian Institute for Musculoskeletal Science (AIMSS), Western Health, Melbourne, VIC, Australia
| | - Cara Timpani
- College of Health and Biomedicine, Victoria University, Melbourne, VIC, Australia.,Institute of Sport, Exercise and Active Living (ISEAL), Victoria University, Melbourne, VIC, Australia.,Department of Medicine, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Regenerative Medicine and Stem Cells Program, Australian Institute for Musculoskeletal Science (AIMSS), Western Health, Melbourne, VIC, Australia
| | - Aaron C Petersen
- Institute of Sport, Exercise and Active Living (ISEAL), Victoria University, Melbourne, VIC, Australia.,Department of Medicine, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Regenerative Medicine and Stem Cells Program, Australian Institute for Musculoskeletal Science (AIMSS), Western Health, Melbourne, VIC, Australia
| | - Raquel Abalo
- Área de Farmacología y Nutrición y Unidad Asociada al Instituto de Química Médica (IQM) y al Instituto de Investigación en Ciencias de la Alimentación (CIAL) del Consejo Superior de Investigaciones Científicas (CSIC); Grupo de Excelencia Investigadora URJC-Banco de Santander-Grupo Multidisciplinar de Investigación y Tratamiento del Dolor (i+DOL), Universidad Rey Juan Carlos, Alcorcón, Spain
| | - Joel C Bornstein
- Department of Physiology, Melbourne University, Melbourne, VIC, Australia
| | - Emma Rybalka
- College of Health and Biomedicine, Victoria University, Melbourne, VIC, Australia.,Institute of Sport, Exercise and Active Living (ISEAL), Victoria University, Melbourne, VIC, Australia.,Department of Medicine, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Regenerative Medicine and Stem Cells Program, Australian Institute for Musculoskeletal Science (AIMSS), Western Health, Melbourne, VIC, Australia
| | - Kulmira Nurgali
- College of Health and Biomedicine, Victoria University, Melbourne, VIC, Australia.,Institute of Sport, Exercise and Active Living (ISEAL), Victoria University, Melbourne, VIC, Australia.,Department of Medicine, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Regenerative Medicine and Stem Cells Program, Australian Institute for Musculoskeletal Science (AIMSS), Western Health, Melbourne, VIC, Australia
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