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Zhang Y, Zhang J, Fan H, Lu R, Nie G. Database construction and comparative genomics analysis of genes involved in nutritional metabolic diseases in fish. COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY. PART D, GENOMICS & PROTEOMICS 2024; 50:101241. [PMID: 38733902 DOI: 10.1016/j.cbd.2024.101241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2024] [Revised: 04/24/2024] [Accepted: 05/04/2024] [Indexed: 05/13/2024]
Abstract
Nutritional metabolic diseases in fish frequently arise in the setting of intensive aquaculture. The etiology and pathogenesis of these conditions involve energy metabolic disorders influenced by both internal genetic factors and external environmental conditions. The exploration of genes associated with nutritional and metabolic disorder has sparked considerable interest within both the aquaculture scientific community and the industry. High-throughput sequencing technology offers researchers extensive genetic information. Effectively mining, analyzing, and securely storing this data is crucial, especially for advancing disease prevention and treatment strategies. Presently, the exploration and application of gene databases concerning nutritional and metabolic disorders in fish are at a nascent stag. Therefore, this study focused on the model organism zebrafish and five primary economic fish species as the subjects of investigation. Using information from KEGG, OMIM, and existing literature, a novel gene database associated with nutritional metabolic diseases in fish was meticulously constructed. This database encompassed 4583 genes for Danio rerio, 6287 for Cyprinus carpio, 3289 for Takifugu rubripes, 3548 for Larimichthys crocea, 3816 for Oreochromis niloticus, and 5708 for Oncorhynchus mykiss. Through a comparative systems biology approach, we discerned a relatively high conservation of genes linked to nutritional metabolic diseases across these fish species, with over 54.9 % of genes being conserved throughout all six species. Additionally, the analysis pinpointed the existence of 13 species-specific genes within the genomes of large yellow croaker, tilapia, and rainbow trout. These genes exhibit the potential to serve as novel candidate targets for addressing nutritional metabolic diseases.
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Affiliation(s)
- Yuru Zhang
- College of Fisheries, Henan Normal University, Xinxiang 453007, PR China; College of Fisheries, Engineering Technology Research Center of Henan Province for Aquatic Animal Cultivation, Henan Normal University, Xinxiang 453007, PR China
| | - Junmei Zhang
- College of Fisheries, Henan Normal University, Xinxiang 453007, PR China; College of Fisheries, Engineering Technology Research Center of Henan Province for Aquatic Animal Cultivation, Henan Normal University, Xinxiang 453007, PR China
| | - Haiying Fan
- College of Fisheries, Henan Normal University, Xinxiang 453007, PR China; College of Fisheries, Engineering Technology Research Center of Henan Province for Aquatic Animal Cultivation, Henan Normal University, Xinxiang 453007, PR China
| | - Ronghua Lu
- College of Fisheries, Henan Normal University, Xinxiang 453007, PR China; College of Fisheries, Engineering Technology Research Center of Henan Province for Aquatic Animal Cultivation, Henan Normal University, Xinxiang 453007, PR China
| | - Guoxing Nie
- College of Fisheries, Henan Normal University, Xinxiang 453007, PR China; College of Fisheries, Engineering Technology Research Center of Henan Province for Aquatic Animal Cultivation, Henan Normal University, Xinxiang 453007, PR China.
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Sara JR, Luus-Powell WJ, Fogelson SB, Botha H, Guillette TC, Smit WJ, Hoffman A, Kunutu KD, Koelmel JP, Bowden JA. A histological evaluation of pansteatitis-affected Mozambique tilapia, Oreochromis mossambicus (Peters 1852), from different geographical locations in South Africa. JOURNAL OF FISH DISEASES 2020; 43:1185-1199. [PMID: 32740987 DOI: 10.1111/jfd.13184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Revised: 05/03/2020] [Accepted: 05/04/2020] [Indexed: 06/11/2023]
Abstract
Pansteatitis is the leading cause for the decline in Nile crocodile populations and the sporadic mortality of fish in the Olifants River System, South Africa. To determine the prevalence of this disease in lentic systems, Mozambique tilapia, Oreochromis mossambicus, were collected from Lake Loskop, Lake Flag Boshielo, Phalaborwa Barrage and Lake Luphephe-Nwanedi. The former three impoundments are located within the main stem of the Olifants River, while the latter, which is geographically isolated and situated in the Limpopo River System, served as a reference site. Mesenteric adipose, liver, serosa of the swim bladder, gill and the skeletal muscle of fish sampled were examined for gross and microscopic evidence of pansteatitis. Microscopically observed changes were used to statistically compare pansteatitis prevalence between samples and sites. Based on histopathological evaluation, the adipose tissue in the liver, swim bladder serosa and coelom from severely debilitated individuals showed the most significant pathological changes. Lesions indicative of steatitis were observed in fish collected from Lake Loskop (75%), Lake Flag Boshielo (22%) and Lake Luphephe-Nwanedi (15%). Further investigation is warranted to understand the pervasiveness and mechanisms driving pathological changes of pansteatitis at Lake Flag Boshielo, Phalaborwa Barrage and Lake Luphephe-Nwanedi.
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Affiliation(s)
- Joseph R Sara
- Department of Biodiversity, University of Limpopo, Sovenga, South Africa
- DSI/NRF Research Chair in Ecosystem Health, University of Limpopo, Sovenga, South Africa
| | - Wilmien J Luus-Powell
- Department of Biodiversity, University of Limpopo, Sovenga, South Africa
- DSI/NRF Research Chair in Ecosystem Health, University of Limpopo, Sovenga, South Africa
| | - Susan B Fogelson
- Pathology Consulting Services, Fishhead Labs, LLC, Stuart, FL, USA
| | - Hannes Botha
- Department of Biodiversity, University of Limpopo, Sovenga, South Africa
- Scientific Services, Mpumalanga Tourism and Parks Agency, Nelspruit, South Africa
| | - Theresa C Guillette
- Department Sciences, Center for Human Health and the Environment, North Carolina State University, Raleigh, NC, USA
| | - Willem J Smit
- Department of Biodiversity, University of Limpopo, Sovenga, South Africa
- DSI/NRF Research Chair in Ecosystem Health, University of Limpopo, Sovenga, South Africa
| | - Andre Hoffman
- Scientific Services, Mpumalanga Tourism and Parks Agency, Nelspruit, South Africa
| | - Katlego D Kunutu
- Department of Biodiversity, University of Limpopo, Sovenga, South Africa
- DSI/NRF Research Chair in Ecosystem Health, University of Limpopo, Sovenga, South Africa
| | - Jeremy P Koelmel
- Environmental Health Sciences, Yale University, New Haven, CT, USA
| | - John A Bowden
- Chemical Sciences Division, Hollings Marine Laboratory, National Institute of Standards and Technology, Charleston, SC, USA
- Department of Physiological Sciences, Center for Environmental and Human Toxicology, College of Veterinary Medicine, University of Florida, Gainesville, FL, USA
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Galoppo GH, Tavalieri YE, Schierano-Marotti G, Osti MR, Luque EH, Muñoz-de-Toro MM. Long-term effects of in ovo exposure to an environmentally relevant dose of atrazine on the thyroid gland of Caiman latirostris. ENVIRONMENTAL RESEARCH 2020; 186:109410. [PMID: 32283336 DOI: 10.1016/j.envres.2020.109410] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Revised: 03/16/2020] [Accepted: 03/17/2020] [Indexed: 06/11/2023]
Abstract
The increased incidence of human thyroid disorders, particularly in women, suggests that the exposure to endocrine-disrupting compounds (EDCs) together with sex-related factors could play a role in thyroid dysregulation. Since the herbicide atrazine (ATZ) is an environmental EDC suspected to behave as a thyroid disruptor, and Caiman latirostris is a crocodilian species highly sensitive to endocrine disruption that can be exposed to ATZ, this study aimed to describe the histoarchitecture and sexually dimorphic features of the thyroid gland of C. latirostris, and to determine the long-term effects of in ovo exposure to an environmentally relevant dose of ATZ (0.2 ppm) on its thyroid gland and growth. Control caimans showed no sexual dimorphisms. In contrast, ATZ-exposed caimans showed altered embryo growth but an unaltered temporal pattern of development and a sexually dimorphic response in the body condition index growth curves postnatally, which suggests a female-related increase in fat storage. Besides, both male and female exposed caimans showed increases in the size of the thyroid stromal compartment, content of interstitial collagen, and follicular hyperplasia, and decreases in the expression of androgen receptor in the follicular epithelium. ATZ-exposed females, but not males, also showed evidences of thyroid enlargement, colloid depletion, increased follicular epithelial height and increased presence of microfollicular structures. Our results demonstrate that prenatal exposure of caimans to ATZ causes thyroid disruption and that females were more vulnerable to ATZ than males. The effects were organizational and observed long after exposure ended. These findings alert on ATZ side-effects on the growth, metabolism, reproduction and development of non-target exposed organisms, particularly females.
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Affiliation(s)
- Germán Hugo Galoppo
- Instituto de Salud y Ambiente del Litoral (ISAL), Universidad Nacional del Litoral - Consejo Nacional de Investigaciones Científicas y Técnicas, Ciudad Universitaria s/n, 4to piso, CP3000, Santa Fe, Argentina; Cátedra de Patología Humana, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Ciudad Universitaria s/n, 4to piso, CP3000, Santa Fe, Argentina.
| | - Yamil Ezequiel Tavalieri
- Instituto de Salud y Ambiente del Litoral (ISAL), Universidad Nacional del Litoral - Consejo Nacional de Investigaciones Científicas y Técnicas, Ciudad Universitaria s/n, 4to piso, CP3000, Santa Fe, Argentina; Cátedra de Patología Humana, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Ciudad Universitaria s/n, 4to piso, CP3000, Santa Fe, Argentina.
| | - Gonzalo Schierano-Marotti
- Instituto de Salud y Ambiente del Litoral (ISAL), Universidad Nacional del Litoral - Consejo Nacional de Investigaciones Científicas y Técnicas, Ciudad Universitaria s/n, 4to piso, CP3000, Santa Fe, Argentina.
| | - Mario Raúl Osti
- Cátedra de Patología Humana, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Ciudad Universitaria s/n, 4to piso, CP3000, Santa Fe, Argentina.
| | - Enrique Hugo Luque
- Instituto de Salud y Ambiente del Litoral (ISAL), Universidad Nacional del Litoral - Consejo Nacional de Investigaciones Científicas y Técnicas, Ciudad Universitaria s/n, 4to piso, CP3000, Santa Fe, Argentina.
| | - Mónica Milagros Muñoz-de-Toro
- Instituto de Salud y Ambiente del Litoral (ISAL), Universidad Nacional del Litoral - Consejo Nacional de Investigaciones Científicas y Técnicas, Ciudad Universitaria s/n, 4to piso, CP3000, Santa Fe, Argentina; Cátedra de Patología Humana, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Ciudad Universitaria s/n, 4to piso, CP3000, Santa Fe, Argentina.
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Koelmel JP, Ulmer CZ, Fogelson S, Jones CM, Botha H, Bangma JT, Guillette TC, Luus-Powell WJ, Sara JR, Smit WJ, Albert K, Miller HA, Guillette MP, Olsen BC, Cochran JA, Garrett TJ, Yost RA, Bowden JA. Lipidomics for wildlife disease etiology and biomarker discovery: a case study of pansteatitis outbreak in South Africa. Metabolomics 2019; 15:38. [PMID: 30838461 PMCID: PMC11005104 DOI: 10.1007/s11306-019-1490-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Accepted: 02/13/2019] [Indexed: 01/14/2023]
Abstract
INTRODUCTION Lipidomics is an emerging field with great promise for biomarker and mechanistic studies due to lipids diverse biological roles. Clinical research applying lipidomics is drastically increasing, with research methods and tools developed for clinical applications equally promising for wildlife studies. OBJECTIVES Limited research to date has applied lipidomics, especially of the intact lipidome, to wildlife studies. Therefore, we examine the application of lipidomics for in situ studies on Mozambique tilapia (Oreochromis mossambicus) in Loskop Dam, South Africa. Wide-scale mortality events of aquatic life associated with an environmentally-derived inflammatory disease, pansteatitis, have occurred in this area. METHODS The lipidome of adipose tissue (n = 31) and plasma (n = 51) from tilapia collected from Loskop Dam were characterized using state of the art liquid chromatography coupled to high-resolution tandem mass spectrometry. RESULTS Lipid profiles reflected pansteatitis severity and were significantly different between diseased and healthy individuals. Over 13 classes of lipids associated with inflammation, cell death, and/or oxidative damage were upregulated in pansteatitis-affected adipose tissue, including ether-lipids, short-chained triglyceride oxidation products, sphingolipids, and acylcarnitines. Ceramides showed a 1000-fold increase in the most affected adipose tissues and were sensitive to disease severity. In plasma, triglycerides were found to be downregulated in pansteatitis-affected tilapia. CONCLUSION Intact lipidomics provided useful mechanistic data and possible biomarkers of pansteatitis. Lipids pointed to upregulated inflammatory pathways, and ceramides serve as promising biomarker candidates for pansteatitis. As comprehensive coverage of the lipidome aids in the elucidation of possible disease mechanisms, application of lipidomics could be applied to the understanding of other environmentally-derived inflammatory conditions, such as those caused by obesogens.
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Affiliation(s)
- Jeremy P Koelmel
- Department of Pathology, Immunology, and Laboratory Medicine, College of Medicine, University of Florida, 1395 Center Dr, Gainesville, FL, 32610, USA
| | - Candice Z Ulmer
- Marine Biochemical Sciences Group, Hollings Marine Laboratory, Chemical Sciences Division, National Institute of Standards and Technology, 331 Fort Johnson Road, Charleston, SC, 29412, USA
| | - Susan Fogelson
- Department of Pathology, Fishhead Labs LLC, 5658 SE Pine Ave, Stuart, FL, 34997, USA
| | - Christina M Jones
- Organic Chemical Measurement Science Group, Chemical Sciences Division, National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, MD, 20899, USA
| | - Hannes Botha
- Scientific Services, Mpumalanga Tourism and Parks Agency, Nelspruit, 1200, South Africa
- Department of Biodiversity, University of Limpopo, Sovenga, 0727, South Africa
| | - Jacqueline T Bangma
- Department of Obstetrics and Gynecology, Medical University of South Carolina, 221 Fort Johnson Road, Charleston, SC, 29412, USA
| | - Theresa C Guillette
- Department of Biological Sciences, Center for Human Health and the Environment, North Carolina State University, 127 David Clark labs, Raleigh, NC, 27695, USA
| | | | - Joseph R Sara
- Department of Biodiversity, University of Limpopo, Sovenga, 0727, South Africa
| | - Willem J Smit
- Department of Biodiversity, University of Limpopo, Sovenga, 0727, South Africa
| | - Korin Albert
- National Science Foundation Research Experience for Undergraduates Program, College of Charleston, Charleston, SC, 29424, USA
| | - Harmony A Miller
- Rosemary Birthing Home, 800 Central Ave, Sarasota, FL, 34236, USA
| | - Matthew P Guillette
- Department of Biological Sciences, North Carolina State University, 127 David Clark Labs, Raleigh, NC, 27695, USA
| | - Berkley C Olsen
- College of Public Health and Health Professions, University of Florida, 1225 Center Dr., Gainesville, FL, 32611, USA
| | - Jason A Cochran
- College of Engineering, University of Florida, 412 Newell Dr., Gainesville, FL, 32611, USA
| | - Timothy J Garrett
- Department of Pathology, Immunology, and Laboratory Medicine, College of Medicine, University of Florida, 1395 Center Dr, Gainesville, FL, 32610, USA
- Department of Chemistry, University of Florida, 214 Leigh Hall, Gainesville, FL, 32611, USA
| | - Richard A Yost
- Department of Pathology, Immunology, and Laboratory Medicine, College of Medicine, University of Florida, 1395 Center Dr, Gainesville, FL, 32610, USA
- Department of Chemistry, University of Florida, 214 Leigh Hall, Gainesville, FL, 32611, USA
| | - John A Bowden
- Marine Biochemical Sciences Group, Hollings Marine Laboratory, Chemical Sciences Division, National Institute of Standards and Technology, 331 Fort Johnson Road, Charleston, SC, 29412, USA.
- Department of Physiological Sciences, Center for Environmental and Human Toxicology, College of Veterinary Medicine, University of Florida, Gainesville, FL, USA.
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Huchzermeyer KDA, Woodborne S, Osthoff G, Hugo A, Hoffman AC, Kaiser H, Steyl JCA, Myburgh JG. Pansteatitis in polluted Olifants River impoundments: nutritional perspectives on fish in a eutrophic lake, Lake Loskop, South Africa. JOURNAL OF FISH DISEASES 2017; 40:1665-1680. [PMID: 28493486 DOI: 10.1111/jfd.12633] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2016] [Revised: 02/10/2017] [Accepted: 02/12/2017] [Indexed: 06/07/2023]
Abstract
This study compares the aetiology of pansteatitis in Lake Loskop, relative to two other impoundments along the Olifants River. Macroscopic and microscopic pathology, age determination and analysis of stomach content, fatty acids and stable isotopes explain the high prevalence of pansteatitis in Oreochromis mossambicus (Peters) and several other species in Lake Loskop. All the dietary indicator comparisons between pansteatitis-affected and healthy fish fail to support a systemic cause. Pansteatitis in Lake Loskop was linked to size and weight of O. mossambicus, but not to ontogenic age. Fish in Lake Loskop showed abnormally high omega-3 to omega-6 fatty acid ratios normally only found in marine fish with no significant difference in degree of assimilation of these fatty acids between pansteatitis-affected and healthy fish. This explains the vulnerability to, but not the occurrence of, pansteatitis. As a cause for the pansteatitis, these results point towards sporadic vitamin E-depleting trigger events, known sporadic fish die-off occurrences that provide surviving fish with a rich source of rancid fats on which to scavenge. The mechanism ties pansteatitis to eutrophication and trophic cascade effects, the intrinsic drivers of the disease and suggests an adaptive management strategy that might be applied by relevant conservation authorities.
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Affiliation(s)
- K D A Huchzermeyer
- Department of Paraclinical Sciences, Faculty of Veterinary Science, University of Pretoria, Onderstepoort, South Africa
- Department of Ichthyology and Fisheries Science, Rhodes University, Grahamstown, South Africa
| | - S Woodborne
- iThemba LABS, Johannesburg, South Africa
- Mammal Research Institute, University of Pretoria, Pretoria, South Africa
| | - G Osthoff
- Microbial Biochemical and Food Biotechnology, Faculty of Natural and Agricultural Sciences, University of the Free State, Bloemfontein, South Africa
| | - A Hugo
- Microbial Biochemical and Food Biotechnology, Faculty of Natural and Agricultural Sciences, University of the Free State, Bloemfontein, South Africa
| | - A C Hoffman
- Scientific Services, Mpumalanga Tourism and Parks Agency, Nelspruit, South Africa
| | - H Kaiser
- Department of Ichthyology and Fisheries Science, Rhodes University, Grahamstown, South Africa
| | - J C A Steyl
- Department of Paraclinical Sciences, Faculty of Veterinary Science, University of Pretoria, Onderstepoort, South Africa
| | - J G Myburgh
- Department of Paraclinical Sciences, Faculty of Veterinary Science, University of Pretoria, Onderstepoort, South Africa
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Dabrowski J, Oberholster P, Steyl J, Osthoff G, Hugo A, Power DM, van Wyk JH. Thyroid function of steatitis-affected Mozambique tilapia Oreochromis mossambicus from a sub-tropical African reservoir. DISEASES OF AQUATIC ORGANISMS 2017; 125:101-113. [PMID: 28737156 DOI: 10.3354/dao03138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Thyroid function and nutritional indicators were measured in obese, steatitis-affected Mozambique tilapia Oreochromis mossambicus from Loskop Reservoir (LR), South Africa. Plasma thyroid hormones (especially T3) and thyroid follicle histomorphology revealed high levels of activity in every aspect of the thyroid cascade measured in fish from LR compared to a reference population of steatitis-free fish. Concurrent measurements of nutritional state including plasma lipids, liver lipid content and hepatocyte size showed that fish from LR had significant energy stores indicative of abundant nutritional intake. There were distinct sex and seasonal differences, with the highest plasma lipids and T3 levels observed in steatitis-affected females during spring and summer. Positive correlations were observed between plasma lipids (especially cholesterol) and T3 concentrations in fish from both populations, indicating a link between lipid metabolism and thyroid function. There was no direct evidence of thyroid disruption, but this cannot be ruled out until further research determines the factors that underlie the homeostatic shift leading to elevated plasma and liver lipids and T3 levels in steatitis-affected tilapia.
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Affiliation(s)
- J Dabrowski
- Sustainability Research Unit, Nelson Mandela Metropolitan University, Private Bag x6531, George 6530, South Africa
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Truter JC, van Wyk JH, Oberholster PJ, Botha AM, Mokwena LM. An evaluation of the endocrine disruptive potential of crude oil water accommodated fractions and crude oil contaminated surface water to freshwater organisms using in vitro and in vivo approaches. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2017; 36:1330-1342. [PMID: 27787904 DOI: 10.1002/etc.3665] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2016] [Revised: 07/20/2016] [Accepted: 10/25/2016] [Indexed: 06/06/2023]
Abstract
Knowledge regarding the potential impacts of crude oil on endocrine signaling in freshwater aquatic vertebrates is limited. The expression of selected genes as biomarkers for altered endocrine signaling was studied in African clawed frog, Xenopus laevis, tadpoles and juvenile Mozambique tilapia, Oreochromis mossambicus, exposed to weathered bunker and unweathered refinery crude oil water accommodated fractions (WAFs). In addition, the expression of the aforementioned genes was quantified in X. laevis tadpoles exposed to surface water collected from the proximity of an underground oil bunker. The (anti)estrogenicity and (anti)androgenicity of crude oil, crude oil WAFs, and surface water were furthermore evaluated using recombinant yeast. Thyroid hormone receptor beta expression was significantly down-regulated in X. laevis in response to both oil WAF types, whereas a further thyroid linked gene, type 2 deiodinase, was up-regulated in O. mossambicus exposed to a high concentration of bunker oil WAF. In addition, both WAFs altered the expression of the adipogenesis-linked peroxisome proliferator-activated receptor gamma in X. laevis. The crude oil and WAFs exhibited antiestrogenic and antiandrogenic activity in vitro. However, O. mossambicus androgen receptor 2 was the only gene, representing the reproductive system, significantly affected by WAF exposure. Estrogenicity, antiestrogenicity, and antiandrogenicity were detected in surface water samples; however, no significant changes were observed in the expression of any of the genes evaluated in X. laevis exposed to surface water. The responses varied among the 2 model organisms used, as well as among the 2 types of crude oil. Nonetheless, the data provide evidence that crude oil pollution may lead to adverse health effects in freshwater fish and amphibians as a result of altered endocrine signaling. Environ Toxicol Chem 2017;36:1330-1342. © 2016 SETAC.
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Affiliation(s)
- J Christoff Truter
- Department of Botany and Zoology, Stellenbosch University, Stellenbosch, South Africa
| | - Johannes H van Wyk
- Department of Botany and Zoology, Stellenbosch University, Stellenbosch, South Africa
| | - Paul J Oberholster
- Department of Botany and Zoology, Stellenbosch University, Stellenbosch, South Africa
- CSIR Natural Resources and the Environment, Stellenbosch, South Africa
| | - Anna-Maria Botha
- Department of Genetics, Stellenbosch University, Stellenbosch, South Africa
| | - Lucky M Mokwena
- Central Analytical Facility, Mass Spectrometry Unit, University of Stellenbosch, Stellenbosch, South Africa
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Bowden JA, Somerville SE, Cantu TM, Guillette MP, Botha H, Boggs ASP, Luus-Powell W, Guillette LJ. On-Site Classification of Pansteatitis in Mozambique Tilapia ( Oreochromis mossambicus) using a Portable Lipid-Based Analyzer. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2016; 8:6631-6635. [PMID: 28729886 PMCID: PMC5514565 DOI: 10.1039/c6ay00446f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
While no pansteatitis-related large-scale mortality events have occurred since 2008, the current status of pansteatitis (presence and pervasiveness) in the Olifants River system and other regions of South Africa remain largely unknown. In part, this is due to both a lack of known biological markers of pansteatitis and a lack of suitable non-invasive assays capable of rapidly classifying the disease. Here, we propose the application of a point-of-care (POC) device using lipid-based test strips (total cholesterol (TC) and total triglyceride (TG)), for classifying pansteatitis status in the whole blood of pre-spawning Mozambique tilapia (Oreochromis mossambicus). Using the TC strips, the POC device was able to non-lethally classify the tilapia as either healthy or pansteatitis-affected; the sexes were examined independently because sexual dimorphism was observed for TC (males p = 0.0364, females χ2 = 0.0007). No significant difference between diseased and pansteatitis-affected tilapia was observed using the TG strips. This is one of the first described applications of using POC devices for on-site environmental disease state testing. A discussion on the merits of using portable lipid-based analyzers as an in-field disease-state diagnostic tool is provided.
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Affiliation(s)
- John A Bowden
- National Institute of Standards and Technology (NIST), Material Measurement Laboratory, Chemical Sciences Division, Environmental Chemical Sciences Group, Hollings Marine Laboratory, Charleston, SC 29412 USA
| | - Stephen E Somerville
- Departments of Obstetrics and Gynecology and Public Health Sciences and the Marine Biomedicine and Environmental Sciences Center, Medical University of South Carolina (MUSC) and the Hollings Marine Laboratory (HML), Charleston, SC 29425-6190 USA
| | - Theresa M Cantu
- Departments of Obstetrics and Gynecology and Public Health Sciences and the Marine Biomedicine and Environmental Sciences Center, Medical University of South Carolina (MUSC) and the Hollings Marine Laboratory (HML), Charleston, SC 29425-6190 USA
| | - Matthew P Guillette
- Departments of Obstetrics and Gynecology and Public Health Sciences and the Marine Biomedicine and Environmental Sciences Center, Medical University of South Carolina (MUSC) and the Hollings Marine Laboratory (HML), Charleston, SC 29425-6190 USA
| | - Hannes Botha
- Scientific Services, Mpumalanga Tourism and Parks Agency, Nelspruit, 1200 South Africa
- Department of Biodiversity, University of Limpopo, Sovenga, 0727 South Africa
| | - Ashley S P Boggs
- National Institute of Standards and Technology (NIST), Material Measurement Laboratory, Chemical Sciences Division, Environmental Chemical Sciences Group, Hollings Marine Laboratory, Charleston, SC 29412 USA
| | - Wilmien Luus-Powell
- Department of Biodiversity, University of Limpopo, Sovenga, 0727 South Africa
| | - Louis J Guillette
- Departments of Obstetrics and Gynecology and Public Health Sciences and the Marine Biomedicine and Environmental Sciences Center, Medical University of South Carolina (MUSC) and the Hollings Marine Laboratory (HML), Charleston, SC 29425-6190 USA
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Bowden JA, Cantu TM, Chapman RW, Somerville SE, Guillette MP, Botha H, Hoffman A, Luus-Powell WJ, Smit WJ, Lebepe J, Myburgh J, Govender D, Tucker J, Boggs ASP, Guillette LJ. Predictive Blood Chemistry Parameters for Pansteatitis-Affected Mozambique Tilapia (Oreochromis mossambicus). PLoS One 2016; 11:e0153874. [PMID: 27115488 PMCID: PMC4846142 DOI: 10.1371/journal.pone.0153874] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2015] [Accepted: 04/05/2016] [Indexed: 11/19/2022] Open
Abstract
One of the largest river systems in South Africa, the Olifants River, has experienced significant changes in water quality due to anthropogenic activities. Since 2005, there have been various “outbreaks” of the inflammatory disease pansteatitis in several vertebrate species. Large-scale pansteatitis-related mortality events have decimated the crocodile population at Lake Loskop and decreased the population at Kruger National Park. Most pansteatitis-related diagnoses within the region are conducted post-mortem by either gross pathology or histology. The application of a non-lethal approach to assess the prevalence and pervasiveness of pansteatitis in the Olifants River region would be of great importance for the development of a management plan for this disease. In this study, several plasma-based biomarkers accurately classified pansteatitis in Mozambique tilapia (Oreochromis mossambicus) collected from Lake Loskop using a commercially available benchtop blood chemistry analyzer combined with data interpretation via artificial neural network analysis. According to the model, four blood chemistry parameters (calcium, sodium, total protein and albumin), in combination with total length, diagnose pansteatitis to a predictive accuracy of 92 percent. In addition, several morphometric traits (total length, age, weight) were also associated with pansteatitis. On-going research will focus on further evaluating the use of blood chemistry to classify pansteatitis across different species, trophic levels, and within different sites along the Olifants River.
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Affiliation(s)
- John A. Bowden
- National Institute of Standards and Technology (NIST), Material Measurement Laboratory, Chemical Sciences Division, Environmental Chemical Sciences Group, Hollings Marine Laboratory, Charleston, South Carolina, United States of America
- * E-mail:
| | - Theresa M. Cantu
- Departments of Obstetrics and Gynecology, Medical University of South Carolina (MUSC), Charleston, South Carolina, United States of America
| | - Robert W. Chapman
- Marine Resources Research Institute, South Carolina Department of Natural Resources, Hollings Marine Laboratory, Charleston, South Carolina, United States of America
| | - Stephen E. Somerville
- Departments of Obstetrics and Gynecology, Medical University of South Carolina (MUSC), Charleston, South Carolina, United States of America
| | - Matthew P. Guillette
- Departments of Obstetrics and Gynecology, Medical University of South Carolina (MUSC), Charleston, South Carolina, United States of America
| | - Hannes Botha
- Scientific Services, Mpumalanga Tourism and Parks Agency, Nelspruit, South Africa
- Department of Biodiversity, University of Limpopo, Sovenga, South Africa
| | - Andre Hoffman
- Scientific Services, Mpumalanga Tourism and Parks Agency, Nelspruit, South Africa
| | | | - Willem J. Smit
- Department of Biodiversity, University of Limpopo, Sovenga, South Africa
| | - Jeffrey Lebepe
- Department of Biodiversity, University of Limpopo, Sovenga, South Africa
| | - Jan Myburgh
- Department of Paraclinical Sciences, Faculty of Veterinary Science, University of Pretoria, Onderstepoort, South Africa
| | - Danny Govender
- Department of Paraclinical Sciences, Faculty of Veterinary Science, University of Pretoria, Onderstepoort, South Africa
- Scientific Services, South African National Parks, Skukuza, South Africa
| | - Jonathan Tucker
- Marine Resources Research Institute, South Carolina Department of Natural Resources, Hollings Marine Laboratory, Charleston, South Carolina, United States of America
| | - Ashley S. P. Boggs
- National Institute of Standards and Technology (NIST), Material Measurement Laboratory, Chemical Sciences Division, Environmental Chemical Sciences Group, Hollings Marine Laboratory, Charleston, South Carolina, United States of America
| | - Louis J. Guillette
- Departments of Obstetrics and Gynecology, Medical University of South Carolina (MUSC), Charleston, South Carolina, United States of America
- Department of Paraclinical Sciences, Faculty of Veterinary Science, University of Pretoria, Onderstepoort, South Africa
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