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Herrero-Villar M, Taggart MA, Mateo R. Pharmaceuticals in avian scavengers and other birds of prey: A toxicological perspective to improve risk assessments. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 948:174425. [PMID: 38969127 DOI: 10.1016/j.scitotenv.2024.174425] [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: 03/05/2024] [Revised: 06/06/2024] [Accepted: 06/30/2024] [Indexed: 07/07/2024]
Abstract
Pharmaceuticals are emerging contaminants given their increasing use worldwide due to intensive food production and population growth. These compounds reach the environment through different pathways with potential negative consequences for wildlife. One dramatic example occurred in Asia, where three native vulture populations collapsed almost to extinction due to acute intoxication with diclofenac, a veterinary use non-steroidal anti-inflammatory drug (NSAID). As seen with diclofenac, avian scavengers are useful sentinels to monitor for the presence of pharmaceuticals in the environment given their position at the top of the trophic chain, and in the case of obligate avian scavengers (vultures), their intimate link to domestic animal carcasses. Unfortunately, little is known about the wider exposure and potential health and population risks of pharmaceuticals to birds of prey. Here we compile literature data regarding relevant toxicological aspects of the most important pharmaceutical groups for birds of prey in terms of toxicity: NSAIDs, antibiotics, external antiparasitics and barbiturates. This work also includes critical information for future risk assessments, including concentrations of drug residues that can remain in animal tissues after treatment, or specific pharmaceutical features that might influence their toxicity in avian scavengers and other birds of prey. We also consider future research needs in this field and provide management recommendations to prevent potential intoxication events with pharmaceuticals in these species. This review highlights the need to consider specific risk assessments regarding exposure to pharmaceuticals, especially those used in veterinary medicine, for birds of prey.
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Affiliation(s)
- Marta Herrero-Villar
- Instituto de Investigación en Recursos Cinegéticos-IREC, CSIC-UCLM-JCCM, Ronda de Toledo s/n, 13071 Ciudad Real, Spain.
| | - Mark A Taggart
- Environmental Research Institute, University of the Highlands and Islands, Castle Street, Thurso, Caithness, Scotland KW14 7JD, UK
| | - Rafael Mateo
- Instituto de Investigación en Recursos Cinegéticos-IREC, CSIC-UCLM-JCCM, Ronda de Toledo s/n, 13071 Ciudad Real, Spain; Institute for Environmental Assessment and Water Research (IDAEA-CSIC), Jordi Girona 18, 08034 Barcelona, Spain
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Mendoza-Fernández PD, Silva-Correa CR, Torre VEVL, Aspajo-Villalaz CL, Calderón-Peña AA, Rosario-Chávarri JD. Hepatoprotective and nephroprotective effects of Tessaria integrifolia Ruiz and Pav. on diclofenac-induced toxicity in rats. Vet World 2023; 16:1933-1939. [PMID: 37859960 PMCID: PMC10583873 DOI: 10.14202/vetworld.2023.1933-1939] [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: 06/13/2023] [Accepted: 08/25/2023] [Indexed: 10/21/2023] Open
Abstract
Background and Aim Tessaria integrifolia Ruiz and Pav. (also known as "Pájaro bobo") is known for its medicinal properties, including antiulcer, antiasthmatic, leishmanicidal, antipyretic, antispasmodic, diuretic, anti-inflammatory, analgesic, and hepatoprotective effects. Therefore, we aimed to evaluate its hepatoprotective and nephroprotective effects using a rat model of diclofenac-induced toxicity. Materials and Methods We administered three different doses of the methanolic extract of T. integrifolia (100, 200, and 400 mg/kg/day orally) and compared them with the commercial medicine silymarin (100 mg/kg orally). The rats received the T. integrifolia extracts for 5 days, and on days 3 and 4, 1 h after receiving the extracts, diclofenac was administered intraperitoneally at a dose of 50 mg/kg. The animals were euthanized 48 h after the last diclofenac injection, and blood samples were obtained to measure biochemical parameters related to liver and kidney function, such as alanine aminotransferase (ALT), aspartate aminotransferase (AST), bilirubin, cholesterol, triglycerides, creatinine, and urea. Kidney and liver tissues were preserved in 10% formaldehyde and sent for histopathological analysis. Results The results show that T. integrifolia has hepatoprotective and nephroprotective effects. These effects are verified by the lower blood levels of ALT, AST, urea, and creatinine compared to the diclofenac group, which exhibited elevated biochemical parameters. In addition, histopathological analysis showed that the groups that received T. integrifolia did not display necrosis or infiltration, which were observed in the diclofenac group. Conclusion The methanolic extract of T. integrifolia has hepatoprotective and nephroprotective effects, with the highest protective activity observed at a dose of 400 mg/kg/day.
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Affiliation(s)
| | - Carmen R. Silva-Correa
- Department of Pharmacology, Facultad de Farmacia y Bioquímica, Universidad Nacional de Trujillo, Perú
| | | | - Cinthya L. Aspajo-Villalaz
- Department of Biological Chemistry and Animal Physiology, Facultad de Ciencias Biológicas, Universidad Nacional de Trujillo, Perú
| | - Abhel A. Calderón-Peña
- Department of Biological Chemistry and Animal Physiology, Facultad de Ciencias Biológicas, Universidad Nacional de Trujillo, Perú
| | - Jorge Del Rosario-Chávarri
- Department of Biological Chemistry and Animal Physiology, Facultad de Ciencias Biológicas, Universidad Nacional de Trujillo, Perú
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Farooq M, Khan AA. Evaluation of histo-toxicity of nimesulide in Black Kites (Milvus migrans): a pharmacodynamic study. BRAZ J BIOL 2023; 83:e271454. [PMID: 37222370 DOI: 10.1590/1519-6984.271454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Accepted: 04/19/2023] [Indexed: 05/25/2023] Open
Abstract
The present experimental work was conducted to elucidate the toxicity of nimesulide at three different doses in black kites (Milvus migrans). M. migrans is one of the most common raptors near human habitations. The goal of the current investigation was to determine whether nimesulide is similarly hazardous to raptors as was diclofenac sodium and to investigate the acute oral toxicity of nimesulide in these birds. For this study, eight adult male black kites (M. migrans) were randomly divided into four groups. M. migrans in the control group (n = 02) were not treated with nimesulide. The other three groups were given nimesulide doses. The birds in the first (n = 02) were declared the control group. The second (n = 02), third (n = 02), and fourth groups were administered nimesulide at a low, medium, and high dose of 2, 4, and 6 mg/kg live body weight of bird/day, respectively, for 10 days. Nimesulide-addled birds became listless and despondent, then anorexic. The birds were standing there with their eyes closed and showing no signs of life. There was an increase in saliva production, a slowing of breathing, and dilated pupils. No clinical signs were observed in the control group. No mortality was seen in the control or treated groups. The control group did not show lesions of gout, but black kites intoxicated with nimesulide at 2, 4, and 6 mg/kg live body weight of bird/day showed inflammation, apoptosis, hemorrhage, necrosis, and leukocytic infiltration tissues of the liver, kidney, and heart of black kites (M. migrans) treated with different concentrations of nimesulide. The treated groups also showed apoptosis of myofibrils and hyperplasia. The hypertrophy, atrophy, fibrosis, necrosis of skeletal muscles and hemorrhage were prominent in the muscles of black kites (M. migrans) intoxicated with nimesulide. All observed histological alterations got worse in a dose-related way. There was no significant difference in AST, ALT, ALP, serum uric acid, but a significant difference was observed in the values of serum urea (p = 0.001) and serum creatinine (p = 0.019).
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Affiliation(s)
- M Farooq
- Ghazi University, Department of Zoology, Dera Ghazi Khan, Pakistan
| | - A A Khan
- Bahauddin Zakariya University, Institute of Zoology, Multan, Pakistan
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Houck EL, Petritz OA, Chen LR, Fletcher OJ, Thomson AE, Flammer K. Clinicopathologic, Gross Necropsy, and Histopathologic Effects of High-Dose, Repeated Meloxicam Administration in Rhode Island Red Chickens (Gallus gallus domesticus). J Avian Med Surg 2022; 36:128-139. [DOI: 10.1647/20-00070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Clarifying expression patterns by renal lesion using transcriptome analysis and vanin-1 as a potential novel biomarker for renal injury in chickens. Poult Sci 2022; 101:102011. [PMID: 35901645 PMCID: PMC9334312 DOI: 10.1016/j.psj.2022.102011] [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: 12/12/2021] [Revised: 06/08/2022] [Accepted: 06/13/2022] [Indexed: 11/20/2022] Open
Abstract
Bird death is often caused by renal lesions induced by chemicals. The avian kidney has a renal portal system with significant blood flow that is sensitive to many chemicals. However, early avian biomarkers for kidney injury are yet to be identified. This study aimed to identify novel renal biomarkers. Acute kidney injury (AKI) can be divided into acute interstitial nephritis (AIN) and acute tubular necrosis (ATN). A chicken model of kidney damage was created by an injection of diclofenac or cisplatin, which caused either AIN or ATN, respectively. Microarray analysis was performed to profile the gene expression patterns in the chickens with nephropathy. A gene enrichment analysis suggested that the genes related to responses to external stimuli showed expression changes in both AIN and ATN. However, hierarchical clustering analyses suggested that gene expression patterns differed between AIN and ATN, and the number of biomarkers relating to renal damage was low. To identify early biomarkers for nephropathy, we focused on genes that were induced at various levels of renal damage. The gene, vanin-1 (VNN1) was highly induced in the early stages of renal damage. A quantitative real-time PCR analysis supported this finding. These results suggest VNN1 could be a useful early biomarker of kidney injury in avian species.
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NESELLO LUCIANEA, CAMPOS ADRIANA, REBELLO ANDRÉA, MOTTA FRANCIELLIT, MARIANO LUISAN, BUZZI FÁTIMAC, RUIZ ANALÚCIAT, CARVALHO JOÃOERNESTODE, CECHINEL-FILHO VALDIR, SILVA LUISAM. Cytotoxicity, antinociceptive and gastroproiltective potential of the Abuta selloana Eichler: a fruit plant from Catarinense flora, Brazil. AN ACAD BRAS CIENC 2022; 94:e20210145. [DOI: 10.1590/0001-3765202220210145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Accepted: 05/13/2021] [Indexed: 11/21/2022] Open
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Sun C, Zhu T, Zhu Y, Li B, Zhang J, Liu Y, Juan C, Yang S, Zhao Z, Wan R, Lin S, Yin B. Hepatotoxic mechanism of diclofenac sodium on broiler chicken revealed by iTRAQ-based proteomics analysis. J Vet Sci 2022; 23:e56. [PMID: 35698810 PMCID: PMC9346521 DOI: 10.4142/jvs.22018] [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: 01/19/2022] [Revised: 03/12/2022] [Accepted: 04/05/2022] [Indexed: 11/20/2022] Open
Abstract
Background At the therapeutic doses, diclofenac sodium (DFS) has few toxic side effects on mammals. On the other hand, DFS exhibits potent toxicity against birds and the mechanisms remain ambiguous. Objectives This paper was designed to probe the toxicity of DFS exposure on the hepatic proteome of broiler chickens. Methods Twenty 30-day-old broiler chickens were randomized evenly into two groups (n = 10). DFS was administered orally at 10 mg/kg body weight in group A, while the chickens in group B were perfused with saline as a control. Histopathological observations, serum biochemical examinations, and quantitative real-time polymerase chain reaction were performed to assess the liver injury induced by DFS. Proteomics analysis of the liver samples was conducted using isobaric tags for relative and absolute quantification (iTRAQ) technology. Results Ultimately, 201 differentially expressed proteins (DEPs) were obtained, of which 47 were up regulated, and 154 were down regulated. The Gene Ontology classification and Kyoto Encyclopedia of Genes and Genomes pathway analysis were conducted to screen target DEPs associated with DFS hepatotoxicity. The regulatory relationships between DEPs and signaling pathways were embodied via a protein-protein interaction network. The results showed that the DEPs enriched in multiple pathways, which might be related to the hepatotoxicity of DFS, were “protein processing in endoplasmic reticulum,” “retinol metabolism,” and “glycine, serine, and threonine metabolism.” Conclusions The hepatotoxicity of DFS on broiler chickens might be achieved by inducing the apoptosis of hepatocytes and affecting the metabolism of retinol and purine. The present study could provide molecular insights into the hepatotoxicity of DFS on broiler chickens.
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Affiliation(s)
- Chuanxi Sun
- College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Taian 271018, China
- Institute of Poultry Science, Shandong Academy of Agricultural Sciences, Jinan 250100, China
| | - Tianyi Zhu
- College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Taian 271018, China
| | - Yuwei Zhu
- College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Taian 271018, China
| | - Bing Li
- College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Taian 271018, China
| | - Jiaming Zhang
- College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Taian 271018, China
| | - Yixin Liu
- College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Taian 271018, China
| | - Changning Juan
- College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Taian 271018, China
| | - Shifa Yang
- Institute of Poultry Science, Shandong Academy of Agricultural Sciences, Jinan 250100, China
- Shandong Provincial Animal and Poultry Green Health Products Creation Engineering Laboratory, Jinan 250100, China
| | - Zengcheng Zhao
- Institute of Poultry Science, Shandong Academy of Agricultural Sciences, Jinan 250100, China
- Shandong Provincial Animal and Poultry Green Health Products Creation Engineering Laboratory, Jinan 250100, China
| | - Renzhong Wan
- College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Taian 271018, China
| | - Shuqian Lin
- Institute of Poultry Science, Shandong Academy of Agricultural Sciences, Jinan 250100, China
- Shandong Provincial Animal and Poultry Green Health Products Creation Engineering Laboratory, Jinan 250100, China
| | - Bin Yin
- Institute of Poultry Science, Shandong Academy of Agricultural Sciences, Jinan 250100, China
- Shandong Provincial Animal and Poultry Green Health Products Creation Engineering Laboratory, Jinan 250100, China
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Rodriguez P, Paul-Murphy JR, Knych HK, Drazenovich TL, Hawkins MG. Pharmacokinetics of grapiprant administered to red-tailed hawks ( Buteo jamaicensis) after food was withheld for 24 hours. Am J Vet Res 2021; 82:912-919. [PMID: 34669491 DOI: 10.2460/ajvr.82.11.912] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To identify an oral dose of grapiprant for red-tailed hawks (RTHAs; Buteo jamaicensis) that would achieve a plasma concentration > 164 ng/mL, which is considered therapeutic for dogs with osteoarthritis. ANIMALS 6 healthy adult RTHAs. PROCEDURES A preliminary study, in which grapiprant (4 mg/kg [n = 2], 11 mg/kg [2], or 45 mg/kg [2]) was delivered into the crop of RTHAs from which food had been withheld for 24 hours, was performed to obtained pharmacokinetic data for use with modeling software to simulate results for grapiprant doses of 20, 25, 30, 35, and 40 mg/kg. Simulation results directed our selection of the grapiprant dose administered to the RTHAs in a single-dose study. Plasma grapiprant concentration, body weight, and gastrointestinal signs of RTHAs were monitored. RESULTS On the basis of results from the preliminary study and simulations, a grapiprant dose of 30 mg/kg was used in the single-dose study. The geometric mean maximum observed plasma concentration of grapiprant was 3,184 ng/mL, time to maximum plasma grapiprant concentration was 2.0 hours, and the harmonic mean terminal half-life was 17.1 hours. No substantial adverse effects were observed. CONCLUSIONS AND CLINICAL RELEVANCE Although the single dose of grapiprant (30 mg/kg) delivered into the crop achieved plasma concentrations > 164 ng/mL in the RTHAs, it was unknown whether this concentration would be therapeutic for birds. Further research that incorporates multidose assessments, safety monitoring, and pharmacodynamic data collection is warranted on the use of grapiprant in RTHAs from which food was withheld versus not withheld.
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Affiliation(s)
- Paula Rodriguez
- From the William R. Pritchard Veterinary Medical Teaching Hospital, Department of Medicine and Epidemiology, and K. L. Maddy Equine Analytical Pharma-cology Laboratory, School of Veterinary Medi-cine, University of California-Davis, Davis, California
| | - Joanne R Paul-Murphy
- From the William R. Pritchard Veterinary Medical Teaching Hospital, Department of Medicine and Epidemiology, and K. L. Maddy Equine Analytical Pharma-cology Laboratory, School of Veterinary Medi-cine, University of California-Davis, Davis, California
| | - Heather K Knych
- From the William R. Pritchard Veterinary Medical Teaching Hospital, Department of Medicine and Epidemiology, and K. L. Maddy Equine Analytical Pharma-cology Laboratory, School of Veterinary Medi-cine, University of California-Davis, Davis, California
| | - Tracy L Drazenovich
- From the William R. Pritchard Veterinary Medical Teaching Hospital, Department of Medicine and Epidemiology, and K. L. Maddy Equine Analytical Pharma-cology Laboratory, School of Veterinary Medi-cine, University of California-Davis, Davis, California
| | - Michelle G Hawkins
- From the William R. Pritchard Veterinary Medical Teaching Hospital, Department of Medicine and Epidemiology, and K. L. Maddy Equine Analytical Pharma-cology Laboratory, School of Veterinary Medi-cine, University of California-Davis, Davis, California
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Nethathe B, Chipangura J, Hassan IZ, Duncan N, Adawaren EO, Havenga L, Naidoo V. Diclofenac toxicity in susceptible bird species results from a combination of reduced glomerular filtration and plasma flow with subsequent renal tubular necrosis. PeerJ 2021; 9:e12002. [PMID: 34513332 PMCID: PMC8388555 DOI: 10.7717/peerj.12002] [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: 01/04/2021] [Accepted: 07/27/2021] [Indexed: 01/13/2023] Open
Abstract
Diclofenac caused the death of millions of vultures on the Asian subcontinent. Other non-steroidal anti-inflammatory drugs (NSAIDs) have since also been shown to be toxic to vultures with the exception of meloxicam. For this study, we evaluated the effect of diclofenac on renal uric acid transport and glomerulus filtration in an acute toxicity model. In a two-phase study with the same birds, healthy chickens (a validated model species) were treated intravenously with para-amino hippuric acid (PAH) and iohexol (IOH) in combination in phase 1. In phase 2, the same PAH and IOH combination was then combined with diclofenac (10 mg/kg). In both phases, blood and faeces were sequentially collected. In phase 1, the birds showed no signs of ill health. Moreover, PAH, IOH and uric acid clearance was rapid. In phase 2, two chickens showed early signs of hyperuricemia 8 hours after exposure and died approximately 24h later. Necropsy showed classic signs of renal damage and gout. Diclofenac had a rapid plasma half-life of elimination of less than 2 hours indicating that toxicity was likely due to an irreversible destruction of a physiological process. All the birds in phase 2 had decreased uric acid, PAH and IOH clearance in comparison to phase 1. The decrease in PAH clearance was variable between the birds (average of 71%) but was near 98% reduced in the two birds that died. It is concluded that diclofenac alters both renal perfusion and renal plasma flow, with death associated with tubular secretion being reduced to negligible functionality for a prolonged period. This would support previous in vitro findings of early cell death from ROS accumulation. However, further evaluation is needed to elucidate this final step.
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Affiliation(s)
- Bono Nethathe
- Department of Paraclinical Science, University of Pretoria, Onderstepoort, Pretoria, South Africa
- Department of Food Science and Technology, University of Venda for Science and Technology, Thohoyandou, Limpopo, South Africa
| | - John Chipangura
- Department of Paraclinical Science, University of Pretoria, Onderstepoort, Pretoria, South Africa
| | - Ibrahim Zubairu Hassan
- Department of Paraclinical Science, University of Pretoria, Onderstepoort, Pretoria, South Africa
| | - Neil Duncan
- Department of Pathology, University of Pretoria, Onderstepoort, Pretoria, South Africa
| | | | - Lauren Havenga
- Department of Anatomy and Physiology, University of Pretoria, Onderstepoort, Pretoria, South Africa
| | - Vinny Naidoo
- Department of Paraclinical Science, University of Pretoria, Onderstepoort, Pretoria, South Africa
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Horgan MD, Knych HK, Siksay SE, Duerr RS. Pharmacokinetics of a Single Dose of Oral Meloxicam in Rehabilitated Wild Brown Pelicans ( Pelecanus occidentalis). J Avian Med Surg 2021; 34:329-337. [PMID: 33355409 DOI: 10.1647/1082-6742-34.4.329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Because of concerns regarding potential adverse effects of meloxicam in pelicans reported by several zoos and wildlife rehabilitation facilities, this study was undertaken to determine the pharmacokinetics of a single oral dose of meloxicam in brown pelicans (Pelecanus occidentalis). A pilot study was performed with 6 apparently healthy wild adult brown pelicans of unknown sex during rehabilitation, administered a single oral dose of meloxicam at 0.2 mg/kg. Plasma drug concentrations were monitored for 24 hours but failed to capture the elimination phase of the drug. Consequently, a principal study monitored plasma concentrations for 120 hours. Six additional adult wild brown pelicans, 3 males and 3 females, approaching releasable condition in rehabilitation were split into 3 groups and each orally administered 0.2 mg/kg meloxicam. Blood samples were collected at baseline and at 4 additional time points that differed between groups. Plasma concentrations were measured with liquid chromatography-mass spectrometry. The mean maximum plasma concentration was 1.22 µg/mL and was achieved at 24 hours after drug administration. The elimination half-life was 36.3 hours, the longest reported to date for any avian species. Further studies are needed to determine the pharmacokinetics of multiple doses of meloxicam and other routes of administration, as well as the pharmacodynamics and safety profile of meloxicam in brown pelicans. On the basis of the results of these investigations, caution is advised when dosing brown pelicans with meloxicam until more studies are completed. By extrapolation, close taxonomic relatives in the order Pelecaniformes may also warrant additional studies.
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Affiliation(s)
- Molly D Horgan
- University of California, Davis, School of Veterinary Medicine, Davis, CA 95616, USA
| | - Heather K Knych
- K. L. Maddy Equine Analytical Chemistry Laboratory, School of Veterinary Medicine, University of California, Davis, CA 95616, USA
| | - Sharon E Siksay
- Livingston Ripley Waterfowl Conservancy, Litchfield, CT 06759, USA
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Diclofenac Alters the Cell Cycle Progression of the Green Alga Chlamydomonas reinhardtii. Cells 2021; 10:cells10081936. [PMID: 34440705 PMCID: PMC8392695 DOI: 10.3390/cells10081936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 07/20/2021] [Accepted: 07/28/2021] [Indexed: 11/17/2022] Open
Abstract
The aim of the study was to verify the hypothesis that a potential cause of the phytotoxicity of diclofenac (DCF, a non-steroidal anti-inflammatory drug) is an effect of cell cycle progression. This research was conducted using synchronous cultures of a model organism, green alga Chlamydomonas reinhardtii. The project examined DCF effects on selected parameters that characterize cell cycle progression, such as cell size, attainment of commitment points, DNA replication, number of nuclei formed during cells division and morphology of cells in consecutive stages of the cell cycle, together with the physiological and biochemical parameters of algae cells at different stages. We demonstrated that individual cell growth remained unaffected, whereas cell division was delayed in the DCF-treated groups grown in continuous light conditions, and the number of daughter cells from a single cell decreased. Thus, the cell cycle progression is a target affected by DCF, which has a similar anti-proliferative effect on mammalian cells.
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Nethathe B, Phaswane R, Abera A, Naidoo V. Molecular characterization of Gyps africanus (African white-backed vulture) organic anion transporter 1 and 2 expressed in the kidney. PLoS One 2021; 16:e0250408. [PMID: 33945567 PMCID: PMC8096082 DOI: 10.1371/journal.pone.0250408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Accepted: 04/06/2021] [Indexed: 11/19/2022] Open
Abstract
Gyps species have been previously shown to be highly sensitive to the toxic effects of diclofenac, when present in their food sources as drug residues following use as a veterinary medicine. Vultures exposed to diclofenac soon become depressed and die with signs of severe visceral gout and renal damage on necropsy. The molecular mechanism behind toxicity and renal excretion of uric acid is still poorly understood. With the clinical pictures suggesting renal uric acid excretion as the target site for toxicity, as a first step the following study was undertaken to determine the uric acid excretory pathways present in the African white-backed vulture (Gyps africanus) (AWB), one of the species susceptible to toxicity. Using transcriptome analysis, immunohistochemistry and functional predictions, we demonstrated that AWB makes use of the organic anion transporter 2 (OAT2) for their uric acid excretion. RT-qPCR analysis subsequently demonstrated relatively similar expression of the OAT2 transporter in the vulture and chicken. Lastly docking analysis, predicted that the non-steroidal drugs induce their toxicity through an allosteric binding.
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Affiliation(s)
- Bono Nethathe
- Department of Paraclinical Sciences, Faculty of Veterinary Science, University of Pretoria, Pretoria, South Africa
- Department of Food Science and Technology, School of Agriculture, University of Venda, Limpopo, South Africa
| | - Rephima Phaswane
- Department of Pathology, Faculty of Veterinary Science, University of Pretoria, Pretoria, South Africa
| | - Aron Abera
- Inqaba Biotechnology, Pretoria, South Africa
| | - Vinny Naidoo
- Department of Paraclinical Sciences, Faculty of Veterinary Science, University of Pretoria, Pretoria, South Africa
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Wolf JC. A Critical Review of Morphologic Findings and Data From 14 Toxicological Studies Involving Fish Exposures to Diclofenac. Toxicol Pathol 2021; 49:1024-1041. [PMID: 33596776 DOI: 10.1177/0192623321989653] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A number of studies have investigated the potential toxicity of the analgesic agent diclofenac (DCF) in various fish species under a diverse array of experimental conditions. Reported evidence of toxicity in these investigations is often strongly reliant on morphologic end points such as histopathology, immunohistochemistry, and transmission electron microscopy. However, it may be challenging for scientists who perform environmental hazard or risk determination to fully appreciate the intricacies of these specialized endpoints. Therefore, the purpose of the current review was to critically assess the quality of morphologic data in 14 papers that described the experimental exposure of fish to DCF. Areas of focus during this review included study design, diagnostic accuracy, magnitude of reported changes, data interpretation and presentation, and the credibility of individual reported findings. Positive attributes of some studies included robust experimental designs, accurate diagnoses, and straightforward and transparent data reporting. Issues identified in certain articles included diagnostic errors, failure to account for sampling and/or observer bias, failure to evaluate findings according to sex, exaggeration of lesion severity, interstudy inconsistencies, unexplained phenomena, and incomplete or ambiguous data presentation. It is hoped that the outcome of this review will be of value for personnel involved in regulatory decision-making.
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Affiliation(s)
- Jeffrey C Wolf
- Experimental Pathology Laboratories, Inc, Sterling, VA, USA
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Nethathe B, Abera A, Naidoo V. Expression and phylogeny of multidrug resistance protein 2 and 4 in African white backed vulture (Gyps africanus). PeerJ 2020; 8:e10422. [PMID: 33344079 PMCID: PMC7718797 DOI: 10.7717/peerj.10422] [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: 07/22/2020] [Accepted: 11/02/2020] [Indexed: 11/20/2022] Open
Abstract
Diclofenac toxicity in old world vultures is well described in the literature by both the severity of the toxicity induced and the speed of death. While the mechanism of toxicity remains unknown at present, the necropsy signs of gout suggests primary renal involvement at the level of the uric acid excretory pathways. From information in the chicken and man, uric acid excretion is known to be a complex process that involves a combination of glomerular filtration and active tubular excretion. For the proximal convoluted tubules excretion occurs as a two-step process with the basolateral cell membrane using the organic anion transporters and the apical membrane using the multidrug resistant protein to transport uric acid from the blood into the tubular fluid. With uric acid excretion seemingly inhibited by diclofenac, it becomes important to characterize these transporter mechanism at the species level. With no information being available on the molecular characterization/expression of MRPs of Gyps africanus, for this study we used next generation sequencing, and Sanger sequencing on the renal tissue of African white backed vulture (AWB), as the first step to establish if the MRPs gene are expressed in AWB. In silico analysis was conducted using different software to ascertain the function of the latter genes. The sequencing results revealed that the MRP2 and MRP4 are expressed in AWB vultures. Phylogeny of avian MRPs genes confirms that vultures and eagles are closely related, which could be attributed to having the same ancestral genes and foraging behavior. In silico analysis confirmed the transcribed proteins would transports anionic compounds and glucose.
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Affiliation(s)
- Bono Nethathe
- Department of Paraclinical Science, Faculty of Veterinary Science, University of Pretoria, Onderstepoort, Pretoria, South Africa.,Department of Food Science and Technology, University of Venda, Thohoyandou, Limpopo, South Africa
| | - Aron Abera
- Inqaba Biotechnology, Sunnyside, Pretoria, South Africa
| | - Vinny Naidoo
- Department of Paraclinical Science, Faculty of Veterinary Science, University of Pretoria, Onderstepoort, Pretoria, South Africa
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15
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Adawaren EO, Du Plessis M, Suleman E, Kindler D, Oosthuizen AO, Mukandiwa L, Naidoo V. The complete mitochondrial genome of Gyps coprotheres (Aves, Accipitridae, Accipitriformes): phylogenetic analysis of mitogenome among raptors. PeerJ 2020; 8:e10034. [PMID: 33240589 PMCID: PMC7666543 DOI: 10.7717/peerj.10034] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Accepted: 09/03/2020] [Indexed: 11/20/2022] Open
Abstract
Three species of Old World vultures on the Asian peninsula are slowly recovering from the lethal consequences of diclofenac. At present the reason for species sensitivity to diclofenac is unknown. Furthermore, it has since been demonstrated that other Old World vultures like the Cape (Gyps coprotheres; CGV) and griffon (G. fulvus) vultures are also susceptible to diclofenac toxicity. Oddly, the New World Turkey vulture (Cathartes aura) and pied crow (Corvus albus) are not susceptible to diclofenac toxicity. As a result of the latter, we postulate an evolutionary link to toxicity. As a first step in understanding the susceptibility to diclofenac toxicity, we use the CGV as a model species for phylogenetic evaluations, by comparing the relatedness of various raptor species known to be susceptible, non-susceptible and suspected by their relationship to the Cape vulture mitogenome. This was achieved by next generation sequencing and assembly. The Cape vulture mitogenome had a genome size of 16,908 bp. The mitogenome phylogenetic analysis indicated a close evolutionary relationship between Old World vultures and other members of the Accipitridae as indicated by bootstrap value of 100% on the phylogenetic trees. Based on this, we postulate that the other species could also be sensitive to the toxic effects of diclofenac. This warrants further investigations.
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Affiliation(s)
- Emmanuel Oluwasegun Adawaren
- Department of Paraclinical Science/Faculty of Veterinary Science, University of Pretoria, Pretoria, Gauteng, South Africa
| | - Morne Du Plessis
- Bioinformatics and Comparative Genomics, South African National Biodiversity Institute, Pretoria, Gauteng, South Africa
| | - Essa Suleman
- Molecular Diagnostics, Council for Scientific and Industrial Research, Pretoria, Gauteng, South Africa.,Current affiliation: Bioinformatics and Comparative Genomics, South African National Biodiversity Institute, Pretoria, Gauteng, South Africa
| | - Duodane Kindler
- Molecular Diagnostics, Council for Scientific and Industrial Research, Pretoria, Gauteng, South Africa
| | - Almero O Oosthuizen
- Bioinformatics and Comparative Genomics, South African National Biodiversity Institute, Pretoria, Gauteng, South Africa
| | - Lillian Mukandiwa
- Department of Paraclinical Science/Faculty of Veterinary Science, University of Pretoria, South Africa
| | - Vinny Naidoo
- Paraclinical Science/Faculty of Veterinary Science, University of Pretoria, Pretoria, Gauteng, South Africa
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16
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Havenga L, Naidoo V, Wolter K, Duncan N, Groenewald HB. Does the renal portal valve exist in a raptor species? A study aimed at further evaluating the mechanism of toxicity of diclofenac in vultures. Anat Histol Embryol 2020; 49:836-841. [PMID: 32608095 DOI: 10.1111/ahe.12590] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Accepted: 06/09/2020] [Indexed: 11/30/2022]
Abstract
Diclofenac has been responsible for the deaths of millions of vultures on the Asian subcontinent. While the pathology of toxicity is well described, the mechanism of toxicity remains elusive. However, it was postulated that toxicity could be related to the unique avian renal vascular structure known as the renal portal valve and that that diclofenac altered valve functionality with subsequent renal ischaemia. While plausible, the valva renalis portalis has only been described in a small number of other bird species such as the chicken (Gallus domesticus), the domestic duck (Anas platyrhynchos domesticus) and ostrich (Struthio camelus) but not a raptor. The aim of this study was to evaluate the renal anatomy and related vasculature of the Cape griffon vulture (Gyps coprotheres) (CGV), a species sensitive to the toxic effects of diclofenac, using gross anatomy, histology and vascular casting. The vasculature of the vulture was found to be almost identical to that of the domestic chicken with the valva renalis portalis present in the v. iliaca externa between the v. renalis renalis cranialis and the v. renalis caudalus. The valve was ring-shaped with finger-like processes and histologically was composed of smooth muscle. The valve was also well vascularized and was associated with a nerve plexus. Based on the findings of this study, the proposed mechanism of toxicity is anatomically possible.
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Affiliation(s)
- Lauren Havenga
- Department of Anatomy and Physiology, Faculty of Veterinary Science, University of Pretoria, Pretoria, South Africa
| | - Vinny Naidoo
- Department of Paraclinical Sciences, Faculty of Veterinary Science, University of Pretoria, Pretoria, South Africa
| | | | - Neil Duncan
- Department of Paraclinical Sciences, Faculty of Veterinary Science, University of Pretoria, Pretoria, South Africa
| | - Hermanus B Groenewald
- Department of Anatomy and Physiology, Faculty of Veterinary Science, University of Pretoria, Pretoria, South Africa
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17
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Fu Q, Fedrizzi D, Kosfeld V, Schlechtriem C, Ganz V, Derrer S, Rentsch D, Hollender J. Biotransformation Changes Bioaccumulation and Toxicity of Diclofenac in Aquatic Organisms. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:4400-4408. [PMID: 32036646 DOI: 10.1021/acs.est.9b07127] [Citation(s) in RCA: 76] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Biotransformation plays a crucial role in regulating the bioaccumulation potential and toxicity of organic compounds in organisms but is, in general, poorly understood for emerging contaminants. Here, we have used diclofenac as a model compound to study the impact of biotransformation on the bioaccumulation potential and toxicity in two keystone aquatic invertebrates: Gammarus pulex and Hyalella azteca. In both species, diclofenac was transformed into several oxidation products and conjugates, including two novel products, that is, diclofenac taurine conjugate (DCF-M403) and unexpected diclofenac methyl ester (DCF-M310.03). The ratios of biotransformation products to parent compound were 12-17 for DCF-M403 and 0.01-0.7 for DCF-M310.03 after 24 h exposure. Bioconcentration factors (BCFs) of diclofenac were 0.5 and 3.2 L kgww-1 in H. azteca and G. pulex, respectively, whereas BCFs of DCF-M310.03 was 164.5 and 104.7 L kgww-1, respectively, representing a 25- to 110-fold increase. Acute toxicity of DCF-M310.03 was also higher than the parent compound in both species, which correlated well with the increased bioconcentration potential. The LC50 of diclofenac in H. azteca was 216 mg L-1, while that of metabolite DCF-M310.03 was reduced to only 0.53 mg L-1, representing a 430-fold increase in acute toxicity compared to diclofenac. DCF-M403 is less toxic than its parent compound toward H. azteca, which may be linked to its slightly lower hydrophobicity. Furthermore, the transformation of diclofenac to its methyl ester derivative was explored in crude invertebrate extracts spiked with an S-adenosylmethionine cofactor, revealing possible catalysis by an S-adenosylmethionine-dependent carboxylic acid methyltransferase. Methylation of diclofenac was further detected in fish hepatocytes and human urine, indicating a broader relevance. Therefore, potentially methylated metabolites of polar contaminants should be considered for a comprehensive risk assessment in the future.
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Affiliation(s)
- Qiuguo Fu
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, 8600 Dübendorf, Switzerland
| | - Davide Fedrizzi
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, 8600 Dübendorf, Switzerland
| | - Verena Kosfeld
- Fraunhofer Institute for Molecular Biology and Applied Ecology IME, 57392 Schmallenberg, Germany
- Institute for Environmental Research (Biology V) 52074 Aachen, Germany
| | - Christian Schlechtriem
- Fraunhofer Institute for Molecular Biology and Applied Ecology IME, 57392 Schmallenberg, Germany
- Institute for Environmental Research (Biology V) 52074 Aachen, Germany
| | - Vera Ganz
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, 8600 Dübendorf, Switzerland
- Institute of Biogeochemistry and Pollutant Dynamics, ETH Zürich, 8092 Zürich, Switzerland
| | - Samuel Derrer
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, 8600 Dübendorf, Switzerland
| | - Daniel Rentsch
- EMPA, Swiss Federal Laboratories for Materials Science and Technology, 8600 Dübendorf, Switzerland
| | - Juliane Hollender
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, 8600 Dübendorf, Switzerland
- Institute of Biogeochemistry and Pollutant Dynamics, ETH Zürich, 8092 Zürich, Switzerland
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18
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Hassan IZ, Duncan N, Adawaren EO, Naidoo V. Could the environmental toxicity of diclofenac in vultures been predictable if preclinical testing methodology were applied? ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2018; 64:181-186. [PMID: 30445374 DOI: 10.1016/j.etap.2018.10.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Revised: 10/18/2018] [Accepted: 10/25/2018] [Indexed: 06/09/2023]
Abstract
Diclofenac, a non-steroidal anti-inflammatory pharmaceutical agent was responsible for the death of millions of Gyps vulture's in the Indian sub-region with the safety of the other non-steroidal anti-inflammatory drugs (NSAIDs) being questionable. With preclinical safety testing not well established for avian species unlike for mammalian and environmental toxicity, we ask the question if a preclinical model could have predicted the toxic effect of the drug. For this study, we test an Organisation for Economic Co-operation and Development (OECD) guideline 223 for assessing the acute toxic potential of pesticides in birds by exposing three avian species to the drug. Exposed Japanese quails (Coturnix japonica) and Muscovy ducks (Cairina moschata) demonstrated clinical signs and pathology similar to those previously reported in vultures viz. hyperuricemia, depression, death, visceral gout and nephrosis. However, exposed domestic pigeons (Columba livia domestica) were insensitive. Following a pharmacokinetic analysis, the drug was well absorbed and distributed in the pigeons with a half-life below 6 h. A toxicokinetic evaluation in quails showed poisoning was due to metabolic constraint, with a half-life and mean residence time above 6 h and 8 h respectively resulting in death. Toxicity seen in the ducks was however not related to metabolic constraint but hyperuricemia as metabolism was rapid [half-life (1-2 h) and mean residence time (2-3 h)] irrespective of survival or death. Despite succumbing to diclofenac, the established oral median lethal dose (LD50) of 405.42 mg/kg and 189.92 mg/kg in Japanese quails and Muscovy ducks respectively from this study were substantially higher than those reported for Gyps vultures (0.098 mg/kg) which is as a result of the rapid elimination of the drug from the body in the former species. More importantly, it suggests that these species are not suitable as surrogates for non-steroidal anti-inflammatory drug toxicity testing and that the toxicity of diclofenac in vultures is idiosyncratic most likely as a result of species specific metabolism.
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Affiliation(s)
- Ibrahim Zubairu Hassan
- Veterinary Pharmacology/Toxicology, Department of Paraclinical Sciences, University of Pretoria, Onderstepoort, South Africa.
| | - Neil Duncan
- Veterinary Pathology, Department of Paraclinical Sciences, University of Pretoria, Onderstepoort, South Africa.
| | - Emmanuel O Adawaren
- Veterinary Pharmacology/Toxicology, Department of Paraclinical Sciences, University of Pretoria, Onderstepoort, South Africa.
| | - Vinny Naidoo
- Veterinary Pharmacology/Toxicology, Department of Paraclinical Sciences, University of Pretoria, Onderstepoort, South Africa; University of Pretoria Biotechnology Research Centre, South Africa.
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19
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Ishii C, Ikenaka Y, Ichii O, Nakayama SMM, Nishimura SI, Ohashi T, Tanaka M, Mizukawa H, Ishizuka M. A glycomics approach to discover novel renal biomarkers in birds by administration of cisplatin and diclofenac to chickens. Poult Sci 2018; 97:1722-1729. [PMID: 29462429 DOI: 10.3382/ps/pey016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2017] [Accepted: 01/11/2018] [Indexed: 12/15/2022] Open
Abstract
Avian species have a unique renal structure and abundant blood flow into the kidneys. Although many birds die due to nephrotoxicity caused by chemicals, there are no early biomarkers for renal lesions. Uric acid level in blood, which is generally used as a renal biomarker, is altered when the kidney function is damaged by over 70%. Therefore, early biomarkers for kidney injury in birds are needed. In humans, glycomics has been at the forefront of biological and medical sciences, and glycans are used as biomarkers of diseases, such as carcinoma. In this study, a glycomics approach was used to screen for renal biomarkers in chicken. First, a chicken model of kidney damage was generated by injection of diclofenac or cisplatin, which cause acute interstitial nephritis (AIN) and acute tubular necrosis (ATN), respectively. The nephrotoxicity levels were determined by a blood chemical test and histopathological analysis. The plasma N-glycans were then analyzed to discover renal biomarkers in birds. Levels of 14 glycans increased between pre- and post administration in kidney-damaged chickens in the diclofenac group, and some of these glycans had the same presumptive composition as those in human renal carcinoma patients. Glycan levels did not change remarkably in the cisplatin group. It is possible that there are changes in glycan expression due to AIN, but they do not reflect ATN. Although further research is needed in other species of birds, glycans are potentially useful biomarkers for AIN in avian species.
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Affiliation(s)
- C Ishii
- Laboratory of Toxicology, Department of Environmental Veterinary Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Kita18, Nishi9, Kita-ku, Sapporo, Hokkaido 060-0818, Japan
| | - Y Ikenaka
- Laboratory of Toxicology, Department of Environmental Veterinary Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Kita18, Nishi9, Kita-ku, Sapporo, Hokkaido 060-0818, Japan.,Water Research Group, Unit for Environmental Sciences and Management, North-West University, Potchefstroom, South Africa
| | - O Ichii
- Laboratory of Anatomy, Department of Biomedical Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Kita 18-Nishi 9, Kita-ku, Sapporo, Hokkaido 060-0818, Japan
| | - S M M Nakayama
- Laboratory of Toxicology, Department of Environmental Veterinary Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Kita18, Nishi9, Kita-ku, Sapporo, Hokkaido 060-0818, Japan
| | - S-I Nishimura
- Faculty of Advanced Life Science, Hokkaido University, Kita21, Nishi11, Kita-ku, Sapporo, Hokkaido 001-0021, Japan
| | - T Ohashi
- Medicinal Chemistry Pharmaceuticals, Co., Ltd., Corabo-Hokkaido, Kita21 Nishi12, Kita-ku, Sapporo, Hokkaido 001-0021, Japan
| | - M Tanaka
- Medicinal Chemistry Pharmaceuticals, Co., Ltd., Corabo-Hokkaido, Kita21 Nishi12, Kita-ku, Sapporo, Hokkaido 001-0021, Japan
| | - H Mizukawa
- Department of Environmental Veterinary Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Kita 18 Nishi 9, Kita-ku, Sapporo, Hokkaido 060-0818, Japan
| | - M Ishizuka
- Laboratory of Toxicology, Department of Environmental Veterinary Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Kita18, Nishi9, Kita-ku, Sapporo, Hokkaido 060-0818, Japan
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20
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Antinociceptive Activities of the Methanolic Extract of the Stem Bark of Boswellia dalzielii Hutch. (Burseraceae) in Rats Are NO/cGMP/ATP-Sensitive-K + Channel Activation Dependent. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2017; 2017:6374907. [PMID: 29362589 PMCID: PMC5736925 DOI: 10.1155/2017/6374907] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Revised: 10/31/2017] [Accepted: 11/13/2017] [Indexed: 01/18/2023]
Abstract
Boswellia dalzielii (B. dalzielii) is traditionally used in the treatment of rheumatism, pain, and inflammation. The present investigation evaluates the property and possible mechanism of action of the methanolic extract of B. dalzielii (BDME) on inflammatory and neuropathic pain models. Effects of BDME (250 and 500 mg/kg), orally administered, were verified in mechanical hypernociception induced by LPS or PGE2. Mechanical hyperalgesia, cold allodynia, and heat hyperalgesia were used in vincristine-induced neuropathic pain. NW-nitro-L-arginine methyl ester (inhibitor of nitric oxide synthase), glibenclamide (ATP-sensitive potassium channel blocker), methylene blue (cGMP blocker), or naloxone (opioid antagonist receptor) has been used to evaluate the therapeutic effects of BDME on PGE2-induced hyperalgesia. Chemical profile of BDME was determined by using HPLC-XESI-PDA/MS. BDME showed significant antinociceptive effects in inflammatory pain caused by LPS and PGE2. The extract also significantly inhibited neuropathic pain induced by vincristine. The antinociceptive property of BDME in PGE2 model was significantly blocked by L-NAME, glibenclamide, methylene blue, or naloxone. The present work reveals the antinociceptive activities of BDME both in inflammatory and in neuropathic models of pain. This plant extract may be acting firstly by binding to opioid receptors and secondly by activating the NO/cGMP/ATP-sensitive-K+ channel pathway.
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21
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He BS, Wang J, Liu J, Hu XM. Eco-pharmacovigilance of non-steroidal anti-inflammatory drugs: Necessity and opportunities. CHEMOSPHERE 2017; 181:178-189. [PMID: 28437743 DOI: 10.1016/j.chemosphere.2017.04.084] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Revised: 04/05/2017] [Accepted: 04/18/2017] [Indexed: 06/07/2023]
Abstract
Eco-pharmacovigilance (EPV) is a practical and powerful approach to minimize the potential risks posed by pharmaceutical residues in environment. However, it is impracticable to practise rigorous and unitary EPV process for all the existing and new pharmaceuticals. Here, we focused on non-steroidal anti-inflammatory drugs (NSAIDs), and discussed the necessity and potential opportunities of practising EPV of NSAIDs. We found that the consumption of NSAIDs is huge and ubiquitous across the globe. NSAIDs were worldwidely reported as one of the most dominant and frequently detected groups in environmental matrices including wastewater, surface water, suspended solids, sediments, groundwater, even drinking water. Besides, there is definitive evidence for the adverse impacts of NSAID residues on scavenging birds and aquatic species. These data suggested the necessity of implementing EPV of NSAIDs. From the perspective of drug administration, we identified some things that can be done as management practice options for EPV implementation on NSAIDs.
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Affiliation(s)
- Bing-Shu He
- Hubei Woman and Child Hospital, Wuhan 430070, China
| | - Jun Wang
- Department of Pharmacy, College of Medicine, Wuhan University of Science and Technology, Wuhan 430065, China.
| | - Juan Liu
- Department of Pharmacy, College of Medicine, Wuhan University of Science and Technology, Wuhan 430065, China
| | - Xia-Min Hu
- Department of Pharmacy, College of Medicine, Wuhan University of Science and Technology, Wuhan 430065, China
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22
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Summa NM, Guzman DSM, Larrat S, Troncy E, Bird DM, Lair S, Fitzgerald, G. Evaluation of High Dosages of Oral Meloxicam in American Kestrels (Falco sparverius). J Avian Med Surg 2017. [DOI: 10.1647/2015-150] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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23
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Guiloski IC, Stein Piancini LD, Dagostim AC, de Morais Calado SL, Fávaro LF, Boschen SL, Cestari MM, da Cunha C, Silva de Assis HC. Effects of environmentally relevant concentrations of the anti-inflammatory drug diclofenac in freshwater fish Rhamdia quelen. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2017; 139:291-300. [PMID: 28167441 DOI: 10.1016/j.ecoenv.2017.01.053] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2016] [Revised: 12/29/2016] [Accepted: 01/31/2017] [Indexed: 06/06/2023]
Abstract
The presence of pharmaceuticals in the aquatic environment and its impact on humans and the ecosystem are emerging issues in environmental health. This study evaluated the potential biochemical, genetic and reproductive effects of the diclofenac by waterborne exposure, in a semi-static bioassay for 21 days. The fish Rhamdia quelen were exposed to environmental concentrations of diclofenac (0, 0.2, 2 and 20µg/L). The results showed that in the liver, diclofenac reduced the catalase and ethoxyresorufin- O- deethylase activities in fish exposed to 2µg/L, and superoxide dismutase in all exposed groups. The levels of reduced glutathione and glutathione S-transferase (GST) activity increased at all tested concentrations. Lipid peroxidation (LPO) was reduced in the groups exposed to 0.2 and 20µg/L of diclofenac, but there was no protein oxidation. In the testis, the concentration of 0.2µg/L caused major changes as inhibition of SOD, glutathione peroxidase and GST activities and also LPO decrease. Diclofenac was not genotoxic and not altered plasma testosterone and estradiol levels and testicular morphology. In brain, there was a reduction of dopamine and its metabolite DOPAC (3, 4-dihydroxyphenylacetic acid) in exposure to diclofenac, but this not disrupted the hypothalamic-pituitary-gonadal axis.
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Affiliation(s)
- Izonete Cristina Guiloski
- Department of Pharmacology, Federal University of Paraná, Box 19031, 81530-980 Curitiba, PR, Brazil.
| | | | - Ana Carolina Dagostim
- Department of Genetics, Federal University of Paraná, Box 19031, 81530-980 Curitiba, PR, Brazil.
| | | | - Luis Fernando Fávaro
- Department of Cell Biology, Federal University of Paraná, Box 19031, 81530-980 Curitiba, PR, Brazil.
| | - Suelen Lúcio Boschen
- Department of Pharmacology, Federal University of Paraná, Box 19031, 81530-980 Curitiba, PR, Brazil.
| | - Marta Margarete Cestari
- Department of Genetics, Federal University of Paraná, Box 19031, 81530-980 Curitiba, PR, Brazil.
| | - Cláudio da Cunha
- Department of Pharmacology, Federal University of Paraná, Box 19031, 81530-980 Curitiba, PR, Brazil.
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24
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Soleimanpour M, Imani F, Safari S, Sanaie S, Soleimanpour H, Ameli H, Alavian SM. The Role of Non-Steroidal Anti-Inflammatory Drugs (NSAIDs) in the Treatment of Patients With Hepatic Disease: A Review Article. Anesth Pain Med 2016; 6:e37822. [PMID: 27843779 PMCID: PMC5100664 DOI: 10.5812/aapm.37822] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Revised: 06/11/2016] [Accepted: 06/27/2016] [Indexed: 12/29/2022] Open
Abstract
CONTEXT Patients with hepatic dysfunction suffer from many problems and associated complications in organs other than the liver. Therefore, it is very important to investigate the effects of different drugs in the treatment of these patients. Due to the high consumption of non-steroidal anti-inflammatory drugs (NSAIDs), studying the effects of these drugs in patients with hepatic dysfunction is particularly important. EVIDENCE ACQUISITION Research studies published from 1958 to 2014 were investigated in the present study. The literature search was conducted based on the following keywords: non-steroidal anti-inflammatory drugs (NSAIDs), liver dysfunction, cirrhosis, pharmaceutical complications, drug-induced liver injury (DILI), and similar words from reliable resources. In total, 63 articles and two books (out of 179 initially identified resources) were included in the study. RESULTS In addition to significant hemostatic disorders and cardiovascular disorders, disorders of the renal, respiratory, and gastrointestinal systems, as well as disorders of the central nervous system, occur in patients with hepatic dysfunction. The various NSAIDs have different effects on different bodily systems. Therefore, the appropriate drug should be chosen based on both the condition of the disease and the severity of the dysfunction. CONCLUSIONS Due to the potential adverse effects of NSAIDs in patients with hepatic disease, their impact on all bodily systems should be emphasized when determining whether their use is necessary. Further, the appropriate medication should be selected after a careful assessment of the severity of the disease and any associated complications. It is logical that medicines should only be prescribed by a qualified physician.
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Affiliation(s)
- Maryam Soleimanpour
- Road Traffic Injury Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Farnad Imani
- Pain Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Saeid Safari
- Pain Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Sarvin Sanaie
- Tuberculosis and Lung Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Hassan Soleimanpour
- Road Traffic Injury Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Hoorolnesa Ameli
- Students’ Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Seyed Moayed Alavian
- Baqiyatallah Research Center for Gastroenterology and Liver Diseases, Baqiyatallah University of Medical Sciences, Tehran, Iran
- Tehran Hepatitis Center, Tehran, Iran
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Kristensen DM, Mazaud-Guittot S, Gaudriault P, Lesné L, Serrano T, Main KM, Jégou B. Analgesic use - prevalence, biomonitoring and endocrine and reproductive effects. Nat Rev Endocrinol 2016; 12:381-93. [PMID: 27150289 DOI: 10.1038/nrendo.2016.55] [Citation(s) in RCA: 103] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Paracetamol and NSAIDs, in particular acetylsalicylic acid (aspirin) and ibuprofen, are among the most used and environmentally released pharmaceutical drugs. The differences in international trends in the sale and consumption of mild analgesics reflect differences in marketing, governmental policies, habits, accessibility, disease patterns and the age distribution of each population. Biomonitoring indicates ubiquitous and high human exposure to paracetamol and to salicylic acid, which is the main metabolite of acetylsalicylic acid. Furthermore, evidence suggests that analgesics can have endocrine disruptive properties capable of altering animal and human reproductive function from fetal life to adulthood in both sexes. Medical and public awareness about these health concerns should be increased, particularly among pregnant women.
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Affiliation(s)
- David M Kristensen
- Genomic and Molecular Biomedicine, Department of Biology, University of Copenhagen, Ole Maaløes Vej 5, DK-2200 Copenhagen N, Denmark
| | - Séverine Mazaud-Guittot
- Institut national de la santé et de la recherche médicale (Inserm), Institut de recherche en santé, environnement et travail (Irset-Inserm UMR 1085), 9 Avenue Léon Bernard, F-35042 RENNES, France
| | - Pierre Gaudriault
- Institut national de la santé et de la recherche médicale (Inserm), Institut de recherche en santé, environnement et travail (Irset-Inserm UMR 1085), 9 Avenue Léon Bernard, F-35042 RENNES, France
| | - Laurianne Lesné
- Institut national de la santé et de la recherche médicale (Inserm), Institut de recherche en santé, environnement et travail (Irset-Inserm UMR 1085), 9 Avenue Léon Bernard, F-35042 RENNES, France
| | - Tania Serrano
- Institut national de la santé et de la recherche médicale (Inserm), Institut de recherche en santé, environnement et travail (Irset-Inserm UMR 1085), 9 Avenue Léon Bernard, F-35042 RENNES, France
- Ecole des hautes études en santé publique (EHESP), Avenue Léon Bernard, F-35043 RENNES, France
| | - Katharina M Main
- Department of Growth and Reproduction, University of Copenhagen, Section GR5064, Blegdamsvej 9, Rigshospitalet, DK-2100 Copenhagen, Denmark
| | - Bernard Jégou
- Institut national de la santé et de la recherche médicale (Inserm), Institut de recherche en santé, environnement et travail (Irset-Inserm UMR 1085), 9 Avenue Léon Bernard, F-35042 RENNES, France
- Ecole des hautes études en santé publique (EHESP), Avenue Léon Bernard, F-35043 RENNES, France
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Peyghambari F, Dashti-Rahmatabadi MH, Rozabadi MD, Rozabadi RD, Rozabadi FD, Pangalizadeh M, Dehghanimohammadabadi N. Antinociceptive effect of palm date spathe hydroalcoholic extract on acute and chronic pain in mice as compared with analgesic effect of morphine and diclofenac. Adv Biomed Res 2015; 4:244. [PMID: 26693469 PMCID: PMC4685642 DOI: 10.4103/2277-9175.170239] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2015] [Accepted: 06/24/2015] [Indexed: 11/04/2022] Open
Abstract
BACKGROUNDS In Persian traditional medicine, palm date spathe (PDS) is introduced as an analgesic. Therefore, this study was designed to investigate the analgesic effect of hydroalcoholic extract of PDS on acute and chronic pain in mice in comparison with diclofenac and morphine. MATERIALS AND METHODS In this study, which was conducted in summer 2014, 220 male mice (20-30 g) were randomly divided into two categories, each consists of 11 groups as follows: A normal control group, a solvent (Tween 80) control group, 3 morphine positive control groups (2, 4 and 8 mg/kg), 3 diclofenac positive control groups (10, 20 and 30 mg/kg), and 3 main experimental PDS groups (2, 20, and 200 mg/kg). Hot plate was applied on animals in one category and writing test on the other category to assess acute and chronic pain, respectively. RESULTS In the writing test, the average writing time and number of animals receiving a maximum dosage of morphine, diclofenac, and PDS were significantly less than the control group. In the hot plate test, only groups receiving different doses of morphine at different time points and those received 30 mg/kg diclofenac at 15 min after the intervention showed significant difference with the control group. CONCLUSION 200 mg/kg extract of PDS, revealed a significant analgesic effect on chronic pain, but it did not show any analgesic effect on acute pain.
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Affiliation(s)
- Fatemeh Peyghambari
- Department of Anatomy, Faculty of Medical Sciences, Yazd Branch, Islamic Azad University, Yazd, Iran
| | | | | | | | - Fatemeh Dehghanfi Rozabadi
- Department of Physiology, Shahid Sadoughi University of Medical Sciences and Health Services, Yazd, Iran
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Dijkstra B, Guzman DSM, Gustavsen K, Owens SD, Hass C, Kass PH, Paul-Murphy JR. Renal, gastrointestinal, and hemostatic effects of oral administration of meloxicam to Hispaniolan Amazon parrots (Amazona ventralis). Am J Vet Res 2015; 76:308-17. [DOI: 10.2460/ajvr.76.4.308] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Abstract
Responses of wildlife to multiple stressors fit in the ecological concept of trade-off. While toxicity of non-steroidal anti-inflammatory drugs and heavy metals for free-ranging birds has been shown in single exposures, the present study aims to evaluate oxidative stress, and liver and kidney damage caused by single and combined effects of diclofenac and lead in the Japanese quail. Forty Japanese quail (Coturnix coturnix japonica) were divided into equal groups of controls, diclofenac, Pb, and Pb+diclofenac exposures. The birds were exposed to the respective chemicals through insertion of lead shots (1.5 g) into the crop on day 0 of the experiment and/or administration of 5 mg/kg of diclofenac intramuscularly in two treatments on days 0 and 5. Groups in liver and kidney tissues of birds were then compared after 10 days using histopathology and biochemistry markers such as glutathione reductase (GR), ferric reducing antioxidant power (FRAP), and lipid peroxidation measured as total thiobarbituric acid reactive species (TBARS). The liver damage score gradient was Pb+diclofenac exposure group > Pb exposure group > diclofenac exposure group and hepatic TBARS values were significantly increased in the group of birds exposed to a combination of diclofenac and lead compared to the healthy control group. The study has shown that, apart from the reported nephrotoxicity of diclofenac, hepatic toxicity should also be considered. Avian clinicians should be cautious when selecting drugs for therapy of wild birds with unknown history of exposure to toxic substances.
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Islam MS, Hossain MJ, Mikolon A, Parveen S, Khan MSU, Haider N, Chakraborty A, Titu AMN, Rahman MW, Sazzad HMS, Rahman M, Gurley ES, Luby SP. Risk practices for animal and human anthrax in Bangladesh: an exploratory study. Infect Ecol Epidemiol 2013; 3:21356. [PMID: 24298326 PMCID: PMC3843109 DOI: 10.3402/iee.v3i0.21356] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2013] [Revised: 10/01/2013] [Accepted: 10/24/2013] [Indexed: 11/24/2022] Open
Abstract
Introduction From August 2009 to October 2010, International Centre for Diarrheal Disease Research, Bangladesh and the Institute of Epidemiology, Disease Control and Research together investigated 14 outbreaks of anthrax which included 140 animal and 273 human cases in 14 anthrax-affected villages. Our investigation objectives were to explore the context in which these outbreaks occurred, including livestock rearing practices, human handling of sick and dead animals, and the anthrax vaccination program. Methods Field anthropologists used qualitative data-collection tools, including 15 hours of unstructured observations, 11 key informant interviews, 32 open-ended interviews, and 6 group discussions in 5 anthrax-affected villages. Results Each cattle owner in the affected communities raised a median of six ruminants on their household premises. The ruminants were often grazed in pastures and fed supplementary rice straw, green grass, water hyacinth, rice husk, wheat bran, and oil cake; lactating cows were given dicalcium phosphate. Cattle represented a major financial investment. Since Islamic law forbids eating animals that die from natural causes, when anthrax-infected cattle were moribund, farmers often slaughtered them on the household premises while they were still alive so that the meat could be eaten. Farmers ate the meat and sold it to neighbors. Skinners removed and sold the hides from discarded carcasses. Farmers discarded the carcasses and slaughtering waste into ditches, bodies of water, or open fields. Cattle in the affected communities did not receive routine anthrax vaccine due to low production, poor distribution, and limited staffing for vaccination. Conclusion Slaughtering anthrax-infected animals and disposing of butchering waste and carcasses in environments where ruminants live and graze, combined with limited vaccination, provided a context that permitted repeated anthrax outbreaks in animals and humans. Because of strong financial incentives, slaughtering moribund animals and discarding carcasses and waste products will likely continue. Long-term vaccination coverage for at-risk animal populations may reduce anthrax infection.
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Affiliation(s)
- Md Saiful Islam
- Centre for Communicable Diseases, International Centre for Diarrhoeal Disease Research, Dhaka, Bangladesh
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Sinclair KM, Church ME, Farver TB, Lowenstine LJ, Owens SD, Paul-Murphy J. Effects of meloxicam on hematologic and plasma biochemical analysis variables and results of histologic examination of tissue specimens of Japanese quail (Coturnix japonica). Am J Vet Res 2013; 73:1720-7. [PMID: 23106456 DOI: 10.2460/ajvr.73.11.1720] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To determine the effects of meloxicam on values of hematologic and plasma biochemical analysis variables and results of histologic examination of tissue specimens of Japanese quail (Coturnix japonica). ANIMALS 30 adult Japanese quail. PROCEDURES 15 quail underwent laparoscopic examination of the left kidneys, and 15 quail underwent laparoscopic examination and biopsy of the left kidneys. Quail in each of these groups received meloxicam (2.0 mg/kg, IM, q 12 h; n = 10) or a saline (0.9% NaCl) solution (0.05 mL, IM, q 12 h; control birds; 5) for 14 days. A CBC and plasma biochemical analyses were performed at the start of the study and within 3 hours after the last treatment. Birds were euthanized and necropsies were performed. RESULTS No adverse effects of treatments were observed, and no significant changes in values of hematologic variables were detected during the study. Plasma uric acid concentrations and creatine kinase or aspartate aminotransferase activities were significantly different before versus after treatment for some groups of birds. Gross lesions identified during necropsy included lesions at renal biopsy sites and adjacent air sacs (attributed to the biopsy procedure) and pectoral muscle hemorrhage and discoloration (at sites of injection). Substantial histopathologic lesions were limited to pectoral muscle necrosis, and severity was greater for meloxicam-treated versus control birds. CONCLUSIONS AND CLINICAL RELEVANCE Meloxicam (2.0 mg/kg, IM, q 12 h for 14 days) did not cause substantial alterations in function of or histopathologic findings for the kidneys of Japanese quail but did induce muscle necrosis; repeated IM administration of meloxicam to quail may be contraindicated.
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Affiliation(s)
- Kristin M Sinclair
- William R. Pritchard Veterinary Medical Teaching Hospital, School of Veterinary Medicine, University of California-Davis, Davis, CA 95616, USA
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Sathishkumar P, Chae JC, Unnithan AR, Palvannan T, Kim HY, Lee KJ, Cho M, Kamala-Kannan S, Oh BT. Laccase-poly(lactic-co-glycolic acid) (PLGA) nanofiber: Highly stable, reusable, and efficacious for the transformation of diclofenac. Enzyme Microb Technol 2012; 51:113-8. [DOI: 10.1016/j.enzmictec.2012.05.001] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2012] [Revised: 04/30/2012] [Accepted: 05/03/2012] [Indexed: 11/26/2022]
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Hey G, Ledin A, Jansen JLC, Andersen HR. Removal of pharmaceuticals in biologically treated wastewater by chlorine dioxide or peracetic acid. ENVIRONMENTAL TECHNOLOGY 2012; 33:1041-1047. [PMID: 22720432 DOI: 10.1080/09593330.2011.606282] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Removal of six active pharmaceutical ingredients in wastewater was investigated using chlorine dioxide (ClO2) or peracetic acid (PAA) as chemical oxidants. Four non-steroidal anti-inflammatory drugs (ibuprofen, naproxen, diclofenac and mefenamic acid) and two lipid-regulating agents (gemfibrozil and clofibric acid, a metabolite of clofibrate) were used as target substances at 40 microg/L initial concentration. Three different wastewaters types originating from two wastewater treatment plants (WWTPs) were used. One wastewater was collected after extended nitrogen removal in activated sludge, one after treatment with high-loaded activated sludge without nitrification, and one from the final effluent from the same plant where nitrogen removal was made in trickling filters for nitrification and moving-bed biofilm reactors for denitrification following the high-loaded plant. Of the six investigated compounds, only clofibric acid and ibuprofen were not removed when treated with ClO2 up to 20 mg/L. With increasing PAA dose up to 50 mg/L, significant removal of most of the pharmaceuticals was observed except for the wastewater with the highest chemical oxygen demand (COD). This indicates that chemical oxidation with ClO2 could be used for tertiary treatment at WWTPs for active pharmaceutical ingredients, whereas PAA was not sufficiently efficient.
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Affiliation(s)
- G Hey
- Water and Environmental Engineering at Department of Chemical Engineering, Lund University, P.O. Box 124, 221 00 Lund, Sweden.
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Abstract
Avian analgesia is now recognized as a critical component of avian medicine and surgery. The need to recognize pain and to provide pain relief is the first step, and many anecdotal therapeutic doses have been extrapolated from other companion animals. Several published research investigations, using several species of birds, have begun to provide avian analgesia therapeutic information for clinical application. The challenge is to continue pushing this research forward with appreciation that there are approximately 10,000 known species of birds, perhaps 200 species commonly kept as pets, and that each species has a range of behaviors as varied as their species-specific PKs and PDs to each analgesic drug.
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Affiliation(s)
- Michelle G Hawkins
- Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis, 2108 Tupper Hall, Davis, CA 95616, USA.
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Hassanzadeh-Khayyat M, Lai EPC, Kollu K, Ormeci B. Degradation of Diclofenac in Molecularly Imprinted Polymer Submicron Particles by UV Light Irradiation and HCl Acid Treatment. ACTA ACUST UNITED AC 2011. [DOI: 10.4236/jwarp.2011.39074] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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The toxicokinetics of ketoprofen in Gyps coprotheres: toxicity due to zero-order metabolism. Arch Toxicol 2010; 84:761-6. [DOI: 10.1007/s00204-010-0521-0] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2009] [Accepted: 01/19/2010] [Indexed: 11/29/2022]
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Abstract
This article investigates geriatric psittacine medicine; it identifies how to recognize and treat pain, and describes disease conditions by system, administration of medicine, and examination techniques.
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Affiliation(s)
- Teresa L Lightfoot
- Avian and Exotics Department, Florida Veterinary Specialists, 3000 Busch Lake Boulevard, Tampa, FL 33614, USA.
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Naidoo V, Wolter K, Cuthbert R, Duncan N. Veterinary diclofenac threatens Africa’s endangered vulture species. Regul Toxicol Pharmacol 2009; 53:205-8. [PMID: 19545505 DOI: 10.1016/j.yrtph.2009.01.010] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2008] [Revised: 01/23/2009] [Accepted: 01/26/2009] [Indexed: 11/29/2022]
Affiliation(s)
- V Naidoo
- Departmental of Paraclinical Sciences, Section of Pharmacology, Faculty of Veterinary Science, University of Pretoria, Private Bag X04, Onderstepoort, Gauteng 0110, South Africa.
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