Alterations in the epidermis of the carp, Labeo rohita (Cyprinidae: Cypriniformes), infected by the bacteria, Aeromonas hydrophila: A scanning electron microscopic, histopathological and immunohistochemical investigation.


Journal

Journal of fish diseases
ISSN: 1365-2761
Titre abrégé: J Fish Dis
Pays: England
ID NLM: 9881188

Informations de publication

Date de publication:
Aug 2020
Historique:
received: 06 02 2020
revised: 27 05 2020
accepted: 28 05 2020
pubmed: 4 7 2020
medline: 30 1 2021
entrez: 4 7 2020
Statut: ppublish

Résumé

This study was carried out to comprehend the pathogenicity of the bacteria in the epidermis of Labeo rohita inoculated with Aeromonas hydrophila. Alterations in the histopathology of the epidermis were examined using scanning electron microscopy, light microscopy and the localization of iNOS and caspase 3 + ve cells by means of immunohistochemical methods. Skin samples obtained from infected fish at different intervals 2, 4, 6, 8 and 10 days showed significant changes in the cellular components of the epidermis. Epithelial cells often appeared hypertrophied with fragmented and loosely arranged microridges, and in the process of exfoliation. Mucous goblet cells increased significantly in density. Club cells showed degenerative changes, often with simultaneous confluence of adjacent cells and release of their contents. Increase in density of iNOS and caspase 3 + ve cells indicates inflammatory response and apoptosis. This study could provide valuable information on the pathogenesis of the disease, and disease outbreaks in farmed fish. Further, it could provide useful guidelines for fish farmers to take preventive measures for the control of the disease.

Identifiants

pubmed: 32618004
doi: 10.1111/jfd.13204
doi:

Types de publication

Journal Article

Langues

eng

Sous-ensembles de citation

IM

Pagination

941-953

Subventions

Organisme : University Grants Commission
ID : Letter No. UGC-UPE/FA-II/2018/19
Organisme : DST-FIST Program
Organisme : UGC-CAS Program

Informations de copyright

© 2020 John Wiley & Sons Ltd.

Références

Abd-El-Rhman, A. M. M. (2009). Antagonism of Aeromonas hydrophila by propolis and its effect on the performance of Nile tilapia, Oreochromis niloticus. Fish & Shellfish Immunology, 27, 454-459. https://doi.org/10.1016/j.fsi.2009.06.015
APHA, AWWA, & WPCF (1985). Standard methods for the examination of water and wastewater (16th ed.). Washington: American Public Health Association.
Ardó, L., Jeney, Z., Adams, A., & Jeney, G. (2010). Immune responses of resistant and sensitive common carp families following experimental challenge with Aeromonas hydrophila. Fish & Shellfish Immunology, 29, 111-116. https://doi.org/10.1016/j.fsi.2010.02.029
Bancroft, J. D., & Gamble, M. (2002). Theory and practice of histological techniques. London, UK: Churchil Livingstone.
Bereiter-Hahn, J., Osborn, M., Weber, K., & Voth, M. (1979). Filament organization and formation of microridges at the surface of fish epidermis. Journal of Ultrastructure Research, 69, 316-330. https://doi.org/10.1016/S0022-5320(79)80050-7
Bernabo, I., Guardia, A., La Russa, D., Madeo, G., Tripepi, S., & Brunelli, E. (2013). Exposure and post-exposure effects of endosulfan on Bufo bufo tadpoles: Morpho-histological and ultrastructural study on epidermis and iNOS localization. Aquatic Toxicology, 142, 164-175. https://doi.org/10.1016/j.aquatox.2013.08.002
Bogdan, C. (2001). Nitric oxide and the immune response. Nature Immunology, 2, 907-916. https://doi.org/10.1038/ni1001-907
Bullard, S. A., & McElwain, A. (2011). Scanning electron microscopy of “Saddleback” lesions associated with experimental infections of Flavobacterium columnare in channel catfish, Ictalurus punctatus (Siluriformes: Ictaluridae), and zebrafish, Danio rerio (Cypriniformes: Cyprinidae). Journal of the World Aquaculture Society, 42(6), 906-913. https://doi.org/10.1111/j.1749-7345.2011.00527.x
Campos-Pérez, J. J., Ellis, A. E., & Secombes, C. J. (2000). Toxicity of nitric oxide and peroxynitrite to bacterial pathogens of fish. Diseases of Aquatic Organisms, 43, 109-115. https://doi.org/10.3354/dao043109
Coscelli, G., Bermúdez, R., Losada, A. P., Faílde, L. D., Santos, Y., & Quiroga, M. I. (2014). Acute Aeromonas salmonicida infection in turbot (Scophthalmus maximus L.). histopathological and immunohistochemical studies. Aquaculture, 430, 79-85. https://doi.org/10.1016/j.aquaculture.2014.04.002
Coscelli, G., Bermúdez, R., Ronza, P., Losada, A. P., & Quiroga, M. I. (2016). Immunohistochemical study of inducible nitric oxide synthase and tumour necrosis factor alpha response in turbot (Scophthalmus maximus) experimentally infected with Aeromonas salmonicida subsp. salmonicida. Fish & Shellfish Immunology, 56, 294-302. https://doi.org/10.1016/j.fsi.2016.07.022
Crumlish, M., Thanh, P. C., Koesling, J., Tung, V. T., & Gravningen, K. (2010). Experimental challenge studies in Vietnamese catfish, Pangasianodon hypophthalmus (Sauvage), exposed to Edwardsiella ictaluri and Aeromonas hydrophila. Journal of Fish Diseases, 33, 717-722. https://doi.org/10.1111/j.1365-2761.2010.01173.x
Daborn, K., Cozzi, R. R., & Marshall, W. S. (2001). Dynamics of pavement cell-chloride cell interactions during abrupt salinity change in Fundulus heteroclitus. Journal of Experimental Biology, 204, 1889-1899.
Darwish, A., Plumb, J. A., & Newton, J. C. (2000). Histopathology and pathogenesis of experimental infection with Edwardsiella tarda in channel catfish. Journal of Aquatic Animal Health, 12(4), 255-266. https://doi.org/10.1577/1548-8667(2000)012<0255:HAPOEI>2.0.CO;2
DePasquale, J. A. (2018). Actin microridges. The Anatomical Record, 301, 2037-2050. https://doi.org/10.1002/ar.23965
Dimmeler, S., & Zeiher, A. M. (1997). Nitric oxide and apoptosis: Another paradigm for the double-edged role of nitric oxide. Nitric Oxide, 1(4), 275-281. https://doi.org/10.1006/niox.1997.0133
El-Sayyad, H. I.,Zaki, V. H., El-Shebly, A. M., & El-Badry, D. A., (2010). Studies on the effects of bacterial diseases on skin and gill structure of Clarias gariepinus in Dakahlia Provinence. The Egyptian Journal of Biology, 1(4), 106-118.
Esteban, M. A. (2012). An overview of the immunological defenses in fish skin. International Scholarly Research Notice, 2012, 1-29, https://doi.org/10.5402/2012/853470
Esteban, M. A., & Cerezuela, R. (2015). Fish mucosal immunity: Skin. In B. Beck, & E. Peatman (Eds.), Mucosal health in aquaculture (pp. 67-92). London, UK: Elsevier Inc. https://doi.org/10.1016/B978-0-12-417186-2.00004-2
Ferri, S. (1983). Modification of microridge pattern in teleost (Pimelodus maculatus) epidermal cells induced by NaCl. Gegenbaurs Morphologisches Jahrbuch, 129, 325-329.
Gobi, N., Vaseeharan, B., Chen, J. C., Rekha, R., Vijayakumar, S., Anjugam, M., & Iswarya, A. (2018). Dietary supplementation of probiotic Bacillus licheniformis Dahb1 improves growth performance, mucus and serum immune parameters, antioxidant enzyme activity as well as resistance against Aeromonas hydrophila in tilapia Oreochromis mossambicus. Fish & Shellfish Immunology, 74, 501-508. https://doi.org/10.1016/j.fsi.2017.12.066
Guerra-Varela, J., Baz-Martínez, M., Da Silva-Álvarez, S., Losada, A. P., Quiroga, M. I., Collado, M., … Sánchez, L., (2018). Susceptibility of zebrafish to vesicular stomatitis virus infection. Zebrafish, 15(2), 124-132. https://doi.org/10.1089/zeb.2017.1499
Harikrishnan, R., & Balasundaram, C. (2005). Modern trends in Aeromonas hydrophila disease management with fish. Reviews in Fisheries Science, 13(4), 281-320. https://doi.org/10.1080/10641260500320845.
Hatha, M., Vivekanandhan, A. A., Joice, G., & Christo, I. (2005). Antibiotic resistance pattern of motile aeromonads from farm raised fresh water fish. International Journal of Food Microbiology, 98, 131-134. https://doi.org/10.1016/j.ijfoodmicro.2004.05.017.
Hossain, M. F., Rashid, M. M., & Sayed, M. A. (2011). Experimental infection of indigenous climbing perch Anabas testudineus with Aeromonas hydrophila bacteria. Progressive Agricuture, 22(1 & 2), 105-114. https://doi.org/10.3329/pa.v22i1-2.16472
Iger, Y., & Abraham, M. (1990). The process of skin healing in experimentally wounded carp. Journal of Fish Biology, 36, 421-437. https://doi.org/10.1111/j.1095-8649.1990.tb05622.x
Iger, Y., Abraham, M., Dotan, A., Fattal, B., & Rahamim, E. (1988). Cellular responses in the skin of carp maintained in organically fertilized water. Journal of Fish Biology, 33, 711-720. https://doi.org/10.1111/j.1095-8649.1988.tb05516.x
Iger, Y., & Wendelaar Bonga, S. E. (1994). Cellular responses of the skin of carp (Cyprinus carpio) exposed to acidified water. Cell & Tissue Research, 275, 481-492. https://doi.org/10.1007/BF00318817
Ijomone, O. M., Olatunjic, S. Y., Owolabic, J. O., Naickerd, T., & Aschner, M. (2018). Nickel-induced neurodegeneration in the hippocampus, striatum and cortex; an ultrastructural insight, and the role of caspase-3 and α-synuclein. Journal of Trace Elements in Medicine, 50, 16-23. https://doi.org/10.1016/j.jtemb.2018.05.017
Janda, J. M., & Abbott, S. L. (2010). The genus Aeromonas: Taxonomy, pathogenicity, and infection. Clinical Microbiology Reviews, 23(1), 35-73. https://doi.org/10.1128/CMR.00039-09
Kondo, M., Kawai, K., Kurohara, K., & Oshima, S. (2002). Adherence of Flavobacterium psychrophilum on the body surface of the ayu Plecoglossus altivelis. Microbes and Infection, 4, 279-283. https://doi.org/10.1016/s1286-4579(02)01539-3
Laith, A. R., & Najiah, M. (2013). Aeromonas hydrophila: Antimicrobial susceptibility and histopathology of isolates from diseased catfish, Clarias gariepinus (Burchell). Journal of Aquaculture Research & Development, 5, 215. https://doi.org/10.4172/2155-9546.1000215
Lindenstrøm, T., Secombes, C. J., & Buchmann, K. (2004). Expression of immune response genes in rainbow trout skin induced by Gyrodactylus derjavini infections. Veterinary Immunology & Immunopathology, 97, 137-148. https://doi.org/10.1016/j.vetimm.2003.08.016
Losada, A. P., Bermúdez, R., Faílde, L. D., & Quiroga, M. I. (2012). Quantitative and qualitative evaluation of iNOS expression in turbot (Psetta maxima) infected with Enteromyxum scophthalmi. Fish & Shellfish Immunology, 32, 243-248. https://doi.org/10.1016/j.fsi.2011.11.007
Losada, A. P., Bermúdez, R., Faílde, L. D., Ruiz de Ocenda, M. V., & Quiroga, M. I. (2014). Study of the distribution of active caspase-3-positive cells in turbot, Scophthalmus maximus (L.), enteromyxosis. Journal of Fish Disease, 37, 21-32. https://doi.org/10.1111/jfd.12029
Manrique, W. G., da Silva Claudiano, G., de Castro, M. P., Petrillo, T. R., Figueiredo, M. A. P., & de Andrade Belo, M. A. (2015). Expression of cellular components in granulomatous inflammatory response in Piaractus mesopotamicus model. PLoS One, 10(3), e0121625. https://doi.org/10.1371/journal.pone.0121625
Mela, M., Guiloski, I. C., Doria, H. B., Rabitto, I. S., da Silva, C. A., Maraschi, A. C., … Silva de Assis, H. C. (2013). Risks of waterborne copper exposure to a cultivated freshwater neotropical catfish (Rhamdia quelen). Ecotoxicology & Environmental Safety, 88, 108-116. https://doi.org/10.1016/j.ecoenv.2012.11.002
Mistri, A., Kumari, U., Mittal, S., & Mittal, A. K. (2018). Immunohistochemical localization of nitric oxide synthase (NOS) isoforms in epidermis and gill epithelium of an angler catfish, Chaca chaca (Siluriformes, Chacidae). Tissue & Cell, 55, 25-30. https://doi.org/10.1016/j.tice.2018.09.008
Mistri, A., Kumari, U., Mittal, S., & Mittal, A. K. (2020). Gill epithelium of an angler catfish, Chaca chaca (Siluriformes, Chacidae): Enzyme and glycoprotein histochemistry. Anatomia Histologia Embryologia, 49, 67-79. https://doi.org/10.1111/ahe.12487
Mittal, A. K., & Garg, T. K. (1994). Effect of anionic detergent - sodium dodecyl sulphate exposure on club cells in the epidermis of Clarias batrachus. Journal of Fish Biology, 44, 857-875. https://doi.org/10.1111/j.1095-8649.1994.tb01260.x
Mittal, A. K., & Munshi, J. S. D. (1970). On the origin and cytomorphosis of “club cells” in the skin of Rita rita (Ham.) (Bagridae, Pisces). Zeitschrift für mikroskopisch-anatomische. Forschung, 88, 424-442.
Mittal, A. K., & Munshi, J. S. D. (1971). A comparative study of the structure of the skin of certain air-breathing fresh-water teleosts. Journal of Zoology, London, 163, 515-532. https://doi.org/10.1111/j.1469-7998.1971.tb04547.x
Mittal, A. K., & Munshi, J. S. D. (1974). On the regeneration and repair of superficial wounds in the skin of Rita rita (Ham.) (Bagridae, Pisces). Acta Anatomica, 88, 424-442. https://doi.org/10.1159/000144250
Mittal, A. K., Rai, A. K., & Banerjee, T. K. (1978). Studies on the pattern of healing of wounds in the skin of a catfish Heteropneustes fossilis, (Bloch) (Heteropneustidae, Pisces). Zeitschrift für mikroskopisch-anatomische. Forschung, 91, 270-286.
Mittal, A. K., & Whitear, M. (1978). Note on cold anesthesia of poikilotherms. Journal of Fish Biology, 13, 519-520. https://doi.org/10.1111/j.1095-8649.1978.tb03462.x
Mittal, A. K., Whitear, M., & Agarwal, S. K. (1980). Fine structure and histochemistry of the epidermis of the fish Monopterus cuchia. Journal of Zoology, London, 191, 107-125. https://doi.org/10.1111/j.1469-7998.1980.tb01452.x
Morrison, R. N., Nowak, B. F., & Carson, J. (2001). The histopathological effects of a levamisole adjuvanted Vibrio anguillarum vaccine on Atlantic salmon (Salmo salar L.). Aquaculture, 195, 23-33. https://doi.org/10.1016/S0044-8486(00)00546-9
Munro, A. L. S., & Hastings, T. S. (1993). Furunculosis. In V. Inglis, R. J. Roberts, & N. R. Bromage (Eds.), Bacterial diseases of fish, (122-142). Oxford, UK: Blackwell Scientific Publications.
Nagata, S. (1997). Apoptosis by death factor. Cell, 88, 355-365. https://doi.org/10.1016/s0092-8674(00)81874-7.
Noga, E. J. (2000). Skin ulcers in fish: Pfiesteria and other etiologies. Toxicologic Pathology, 28, 807-823. https://doi.org/10.1177/019262330002800607
Parra, D., Reyes-Lopez, F. E., & Tort, L. (2015). Mucosal immunity and B cells in teleosts: Effect of vaccination and stress. Frontiers in Immunology, 6, 1-12. https://doi.org/10.3389/fimmu.2015.00354
Parra, D., Takizawa, F., & Sunyer, J. O. (2013). Evolution of B cell immunity. Annual Review of Animal Biosciences, 1, 65-97. https://doi.org/10.1146/annurev-animal-031412-103651
Phromsuthirak, P. (1977). Electron microscopy of wound healing in the skin of Gasterosteus aculeatus. Journal of Fish Biology, 11, 193-206. https://doi.org/10.1111/j.1095-8649.1977.tb04113.x
Powell, M. D., Yousaf, M. N., Rasmussen, K. J., Kollner, B., Zou, J., Secombes, C., & Speare, D. J. (2014). Immunohistochemical localization of inflammatory cells and cell cycle proteins in the gills of Loma salmonae infected rainbow trout (Oncorhynchus mykiss). Fish & Shellfish Immunology, 40, 91-98. https://doi.org/10.1016/j.fsi.2014.06.004
Rai, A. K., Srivastava, N., Nigam, A. K., Kumari, U., Mittal, S., & Mittal, A. K. (2012). Healing of cutaneous wounds in a freshwater teleost, Labeo rohita: Scanning electron microscopical investigation. Microscopy Research & Technique, 75, 890-897. https://doi.org/10.1002/jemt.22009
Reed, L. J., & Muench, H. (1938). A simple method of estimating fifty per cent endpoints. American Journal of Hygiene, 27, 493-497. https://doi.org/10.1093/oxfordjournals.aje.a118408
Rehulka, J. (2002). Aeromonas causes severe skin lesions in rainbow trout (Oncorhynchus mykiss): Clinical pathology, haematology and biochemistry. Acta Veterinaria Brno, 71, 351-360. https://doi.org/10.2754/avb200271030351
Richardson, R., Metzger, M., Knyphausen, P., Ramezani, T., Slanchev, K., Kraus, C., … Hammerschmidt, M. (2016). Re-epithelialization of cutaneous wounds in adult zebrafish combines mechanisms of wound closure in embryonic and adult mammals. Development, 143, 2077-2088. https://doi.org/10.1242/dev.130492
Ross, M. H., Romrell, L. J., & Kaye, I. G. (1995). Histology: A text and atlas. 3rd ed. Baltimore, MD: Wiliams and Wilkins.
Sahoo, P. K., Rauta, P. R., Mohanty, B. R., Mahapatra, K. D., Saha, J. N., Rye, M., & Eknath, A. E. (2011). Selection for improved resistance to Aeromonas hydrophila in Indian major carp Labeo rohita: Survival and innate immune responses in first generation of resistant and susceptible lines. Fish & Shellfish Immunology, 31, 432-438. https://doi.org/10.1016/j.fsi.2011.06.014
Salamat, N., & Zarie, M. (2012). Using of fish pathological alterations to assess aquatic pollution: A review. World Journal of Fish & Marine Sciences, 4(3), 223-231.
Schwerdtfeger, W. K. (1979). Morphometrical studies of the ultrastructure of the epidermis of the guppy, Poecilia reticulata peters, following adaptation to seawater and treatment with prolactin. General & Comparative Endocrinology, 38, 476-483. https://doi.org/10.1016/0016-6480(79)90156-4
Sharma, J. G., Masuda, R., & Tanaka, M. (2005). Ultrastructural study of skin and eye of UV-B irradiated ayu Plecoglossus altivelis. Journal of Fish Biology, 67, 1646-1652. https://doi.org/10.1111/j.1095-8649.2005.00871.x
Srivastava, A., Verma, N., Mistri, A., Ranjan, B., Nigam, A. K., Kumari, U., … Mittal, A. K. (2017). Alterations in the skin of Labeo rohita exposed to an azo dye, Eriochrome black T: A histopathological and enzyme biochemical investigation. Environmental Science & Pollution Research, 24, 8671-8681. https://doi.org/10.1007/s11356-017-8517-4
Srivastava, N., Kumari, U., Rai, A. K., Mittal, S., & Mittal, A. K. (2014). Alterations in the gill filaments and secondary lamellae of Cirrhinus mrigala exposed to Nuvan, an organophosphorus insecticide. Journal of Histology, 2014, 11. https://doi.org/10.1155/2014/190139
Swain, P., Behera, T., Mohapatra, D., Nanda, P. K., Nayak, S. K., Meher, P. K., & Das, B. K. (2010). Derivation of rough attenuated variants from smooth virulent Aeromonas hydrophila and their immunogenicity in fish. Vaccine, 28, 4626-4631. https://doi.org/10.1016/j.vaccine.2010.04.078
van der Marel, M., Caspari, N., Neuhaus, H., Meyer, W., Enss, M. L., & Steinhagen, D. (2010). Changes in skin mucus of common carp, Cyprinus carpio L., after exposure to water with a high bacterial load. Journal of Fish Diseases, 33, 431-439. https://doi.org/10.1111/j.1365-2761.2010.01140.x
van der Salm, A. L., Nolan, D. T., Spanings, F. A. T., & Wendelaar Bonga, S. E. (2000). Effects of infection with the ectoparasite Argulus japonicus (Thiele) and administration of cortisol on cellular proliferation and apoptosis in the epidermis of common carp, Cyprinus carpio L., skin. Journal of Fish Diseases, 23, 173-184. https://doi.org/10.1046/j.1365-2761.2000.00230.x
Verma, N., Kumari, U., Mittal, S., & Mittal, A. K. (2017a). Scanning electron microscope investigation on the process of healing of skin wounds in Cirrhinus mrigala. Microscopy Research & Technique, 80, 1205-1214. https://doi.org/10.1002/jemt.22918
Verma, N., Kumari, U., Mittal, S., & Mittal, A. K. (2017b). Effect of asiaticoside on the healing of skin wounds in the carp Cirrhinus mrigala: An immunohistochemical investigation. Tissue & Cell, 49, 734-745. https://doi.org/10.1016/j.tice.2017.10.005
Wang, H., Tang, W., Zhang, R., & Ding, S. (2019). Analysis of enzyme activity, antibacterial activity, antiparasitic activity and physico-chemical stability of skin mucus derived from Amphiprion clarkii. Fish & Shellfish Immunology, 86, 653-661. https://doi.org/10.1016/j.fsi.2018.11.066
Weller, R. (1999). Nitric oxide, skin growth and differentiation: More questions than answers? Clinical & Experimental Dermatology, 24, 388-391. https://doi.org/10.1046/j.1365-2230.1999.00509.x
Whitear, M. (1986). The skin of fishes including cyclostomes - Epidermis. In J. Bereiter-Hahn, A. G. Matoltsy, & K. S. Richards (Eds.), Biology of the integument. 2. Vertebrates (pp. 2-38). Heidelberg, Germany: Springer-Verlag.
Whitear, M., & Mittal, A. K. (1983). Fine structure of the club cells in the skin of ostariophysan fish. Zeitschrift für mikroskopisch-anatomische Forschung, 97, 141-157.
Whitear, M., & Moate, R. M. (1994). Microanatomy of taste buds in the dogfish, Scyliorbinus canicula. Journal of Submicroscopic Cytology & Pathology, 26, 357-367.
Wink, D. A., Miranda, K. M., Espey, M. G., Pluta, R. M., Hewett, S. J., Colton, C., … Grisham, M. B. (2001). Mechanisms of the antioxidant effects of nitric oxide. Antioxidants & Redox Signaling, 3, 203-213. https://doi.org/10.1089/152308601300185179
Yamada, J. (1968). A study of the structure of surface cell layers in the epidermis of some teleosts. Annotationes Zoologicae Japonenses, 41, 1-8.
Zaccone, G. (1980). Structure, histochemistry and effect of stress on the epidermis of Ophisurus serpens (L.) (Teleostei: Ophichthidae). Cell & Molecular Biology, 26, 663-674.

Auteurs

Ayan Srivastava (A)

Skin Physiology Laboratory, Department of Zoology, Centre of Advanced Study, Institute of Science, Banaras Hindu University, Varanasi, India.

Arup Mistri (A)

Skin Physiology Laboratory, Department of Zoology, Centre of Advanced Study, Institute of Science, Banaras Hindu University, Varanasi, India.

Swati Mittal (S)

Skin Physiology Laboratory, Department of Zoology, Centre of Advanced Study, Institute of Science, Banaras Hindu University, Varanasi, India.

Ajay Kumar Mittal (AK)

Skin Physiology Laboratory, Department of Zoology, Centre of Advanced Study, Institute of Science, Banaras Hindu University, Varanasi, India.

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