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Dias De Castro LL, Oliveira Júnior GA, Perez BC, Carvalho ME, De Souza Ramos EA, Ferraz JBS, Molento MB. Genome-wide association study in thoroughbred horses naturally infected with cyathostomins. Anim Biotechnol 2023; 34:2467-2479. [PMID: 35856721 DOI: 10.1080/10495398.2022.2099880] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
Cyathostomins are considered one of the most important parasites of horses. A group of horses within a herd can be responsible for eliminating the majority of parasite eggs. This phenotype might be explained by genetic factors. This study aimed to identify genomic regions associated with fecal egg count (FEC) and hematological parameters by performing a genomic-wide association study (GWAS) in Thoroughbred horses naturally infected with cyathostomins. Packed cell volume (PCV), differential leukocyte, and FEC were determined from 90 horses. All animals were genotyped using the Illumina Equine 70 K BeadChip panel containing 65,157 SNP markers. The five genomic windows that have explained the highest percentage of the additive genetic variance of a specific trait (top 5) were further explored to identify candidate genes. A total of 33, 21, 30, 21, and 19 genes were identified for FEC, PCV, eosinophils, neutrophils, and lymphocyte count, respectively. The top 5 marker regions explained 2.86, 2.56, 2.73, 2.33, and 2.37% of the additive genetic variation of FEC, PCV, eosinophils, neutrophils, and lymphocytes count, respectively. This is the first study correlating phenotypic horse health traits to GWAS analysis, which may be used for animal breeding activities, reducing losses due to parasite infections.
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Affiliation(s)
- Luciana L Dias De Castro
- Laboratory of Parasitology, Department of Veterinary Medicine, University of Caxias do Sul. R: Francisco Getúlio Vargas, Caxias do Sul, Brazil
| | - Gerson A Oliveira Júnior
- College of Animal Science and Food Science, University of São Paulo, Pirassununga, Brazil
- Centre for Genetic Improvement of Livestock, Department of Animal Biosciences, University of Guelph, Guelph, Canada
| | - Bruno Costa Perez
- College of Animal Science and Food Science, University of São Paulo, Pirassununga, Brazil
| | - Minos E Carvalho
- College of Animal Science and Food Science, University of São Paulo, Pirassununga, Brazil
| | - Edneia A De Souza Ramos
- Laboratory of Epigenetics, Department of Pathology, Federal University of Parana, Curitiba, Brazil
| | - José Bento S Ferraz
- College of Animal Science and Food Science, University of São Paulo, Pirassununga, Brazil
| | - Marcelo Beltrão Molento
- Laboratory of Veterinary Clinical Parasitology, Department of Veterinary Medicine, Federal University of Parana, Curitiba, Brazil
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Vaughn SA, Norton NA, Hurley DJ, Hart KA. Validation of a commercially available photometric analytical system for assessment of plasma oxidative status in healthy horses. Vet Immunol Immunopathol 2023; 265:110665. [PMID: 37952346 DOI: 10.1016/j.vetimm.2023.110665] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Accepted: 10/27/2023] [Indexed: 11/14/2023]
Abstract
Reactive oxygen species (ROS) are the end-products of physiologic functions in health. Oxidative stress occurs when endogenous antioxidants are insufficient to neutralize ROS in the system. As a result, ROS can damage DNA, RNA, proteins, lipids, and cell organelles. To obtain accurate measurements of plasma oxidative stress, levels of both oxidants and antioxidants must be measured. This study validates a commercially available, semi-quantitative, photometric analytical system that measures systemic determinants of reactive oxygen metabolites (dROM) and plasma antioxidant capacity (PAC) in stored equine plasma. The objectives of this work were: 1) to validate a photometric analytical system to quantify dROM and PAC in equine plasma; and 2) to determine expected results for these tests in healthy adult horses. We hypothesized that this system would reliably and reproducibly assess dROM and PAC in equine plasma. We observed expected, dose-dependent increases in dROM generated by adding increasing concentrations of H2O2 or ascorbic acid to equine plasma to provide samples containing a known quantity of oxidants or antioxidants respectively. Mean dROM value in healthy horses was 103.3 ±20.7 U. Carr and mean PAC was 2881.0 ± 313.9 U. Cor. This system reliably and reproducibly quantified dROM and PAC in equine plasma samples.
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Affiliation(s)
- Sarah A Vaughn
- Department of Large Animal Medicine, University of Georgia College of Veterinary Medicine, 2200 College Station Road, Athens, GA 30602, USA
| | - Natalie A Norton
- Department of Large Animal Medicine, University of Georgia College of Veterinary Medicine, 2200 College Station Road, Athens, GA 30602, USA
| | - David J Hurley
- Department of Population Health, University of Georgia College of Veterinary Medicine, 2200 College Station Road, Athens, GA 30602, USA
| | - Kelsey A Hart
- Department of Large Animal Medicine, University of Georgia College of Veterinary Medicine, 2200 College Station Road, Athens, GA 30602, USA.
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Verma R, Das G, Singh AP, Kumar S, Nath S, Sengupta PP, Sankar M, Tiwari A, Gupta V, Srivastava S. Molecular and genetic diversity in isolates of Trypanosoma evansi from naturally infected horse and dogs by using RoTat 1.2 VSG gene in Madhya Pradesh, India. Mol Biol Rep 2023; 50:7347-7356. [PMID: 37439897 DOI: 10.1007/s11033-023-08651-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2023] [Accepted: 06/28/2023] [Indexed: 07/14/2023]
Abstract
BACKGROUND Trypanosoma evansi is a protozoan parasite that can infect a wide range of animals and is widespread around the world. In this study, we analyzed four fatal cases of T. evansi infection using clinical, parasitological, and molecular approaches. We also explored the genetic diversity, demographic history, and population-genetic structure of T. evansi using available Rode Trypanozoon antigenic type (RoTat) 1.2 gene sequences. METHODS AND RESULTS Clinical findings of infected animals revealed high fever, anemia, weakness, and anorexia. The animals were treated with diminazene aceturate, which was moderately effective, and hematobiochemical parameters showed changes in hemoglobin and glucose levels. The molecular and genetic diversity of T. evansi was analyzed using the RoTat 1.2 VSG gene. Phylogenetic and haplotype analysis revealed two distinct clusters of T. evansi circulating in India. The genetic diversity indices, neutrality tests, gene flow, and genetic differentiation outcomes confirmed the genetic diversity of the T. evansi population, with a lack of uniformity. The identification of two distinct clusters, exhibiting differential demographic histories and evolutionary forces, implies that the clusters may have undergone independent evolutionary trajectories or experienced different environmental pressures. CONCLUSION The present findings underlined the need of an early and precise diagnosis in order to treat and control T. evansi infections, and the RoTat 1.2 VSG gene is an important genetic marker for understanding the genetic diversity and evolutionary history of T. evansi. This knowledge can be used to create tailored strategies to control and manage the infection in an endemic region.
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Affiliation(s)
- Rupesh Verma
- Department of Veterinary Parasitology, College of Veterinary Science and Animal Husbandry, Nanaji Deshmukh Veterinary Science University, Jabalpur, 482001, MP, India.
| | - Giridhari Das
- Department of Veterinary Parasitology, College of Veterinary Science and Animal Husbandry, Nanaji Deshmukh Veterinary Science University, Jabalpur, 482001, MP, India
| | - Ajit Pratap Singh
- Animal Biotechnology Centre, Jabalpur, Jawaharlal Nehru Krishi Vishwa Vidyalaya Campus, Jabalpur, 482004, (MP), India
| | - Suman Kumar
- Department of Veterinary Parasitology, College of Veterinary Science and Animal Husbandry, Nanaji Deshmukh Veterinary Science University, Jabalpur, 482001, MP, India
| | - Subhradal Nath
- Department of Veterinary Parasitology, College of Veterinary Science and Animal Husbandry, Nanaji Deshmukh Veterinary Science University, Jabalpur, 482001, MP, India
| | - Pinaki Prasad Sengupta
- Parasitology Laboratory, ICAR-National Institute of Veterinary Epidemiology & Disease Informatics (NIVEDI), Bangalore, 560064, KA, India
| | - Muthu Sankar
- Division of Parasitology, ICAR-Indian Veterinary Research Institute, Bareilly, 243122, (UP), India
| | - Amita Tiwari
- Department of Veterinary Medicine, College of Veterinary Science and Animal Husbandry, Nanaji Deshmukh Veterinary Science University, Jabalpur, 482001, MP, India
| | - Vandana Gupta
- Department of Veterinary Microbiology, College of Veterinary Science and Animal Husbandry, Nanaji Deshmukh Veterinary Science University, Jabalpur, 482001, MP, India
| | - Shraddha Srivastava
- Department of Veterinary Biochemistry, College of Veterinary Science and Animal Husbandry, Nanaji Deshmukh Veterinary Science University, Jabalpur, 482001, MP, India
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Darwish AM, Sharaf A, Gaouar SBS, Ali NI, El-Aziz THA, Abushady AM, Kaouadji Z, Othman OE, Obornik M. Biochemical and genotyping analyses of camels (Camelus dromedaries) trypanosomiasis in North Africa. Sci Rep 2023; 13:7176. [PMID: 37137920 PMCID: PMC10156784 DOI: 10.1038/s41598-023-34086-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Accepted: 04/24/2023] [Indexed: 05/05/2023] Open
Abstract
Camels are considered an important food source in North Africa. Trypanosomiasis in camels is a life-threatening disease that causes severe economic losses in milk and meat production. Therefore, the objective of this study was to determine the trypanosome genotypes in the North African region. Trypanosome infection rates were determined by microscopic examination of blood smears and polymerase chain reaction (PCR). In addition, total antioxidant capacity (TAC), lipid peroxides (MDA), reduced glutathione (GSH), superoxide dismutase (SOD) and catalase (CAT) were determined in erythrocyte lysate. Furthermore, 18S amplicon sequencing was used to barcode and characterizes the genetic diversity of trypanosome genotypes in camel blood. In addition to Trypanosoma, Babesia and Thelieria were also detected in the blood samples. PCR showed that the trypanosome infection rate was higher in Algerian samples (25.7%) than in Egyptian samples (7.2%). Parameters such as MDA, GSH, SOD and CAT had significantly increased in camels infected with trypanosomes compared to uninfected control animals, while TAC level was not significantly changed. The results of relative amplicon abundance showed that the range of trypanosome infection was higher in Egypt than in Algeria. Moreover, phylogenetic analysis showed that the Trypanosoma sequences of Egyptian and Algerian camels are related to Trypanosoma evansi. Unexpectedly, diversity within T. evansi was higher in Egyptian camels than in Algerian camels. We present here the first molecular report providing a picture of trypanosomiasis in camels, covering wide geographical areas in Egypt and Algeria.
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Affiliation(s)
- Ahmed M Darwish
- Cell Biology Department, Biotechnology Research Institute, National Research Centre, Dokki, 12622, Giza, Egypt.
| | - Abdoallah Sharaf
- SequAna Core Facility, Department of Biology, University of Konstanz, 78464, Konstanz, Germany
- Genetic Department, Faculty of Agriculture, Ain Shams University, Cairo, Egypt
| | - Semir Bechir Suheil Gaouar
- Applied Genetic in Agriculture, Ecology and Public Health Laboratory, SNV/STU Faculty, University of Tlemcen, Chetouane, Algeria
| | - Neama I Ali
- Cell Biology Department, Biotechnology Research Institute, National Research Centre, Dokki, 12622, Giza, Egypt
| | - Tamer H Abd El-Aziz
- Parasitology and Animal Diseases, Veterinary Research Institute, National Research Centre, Dokki, 12622, Giza, Egypt
| | - Asmaa M Abushady
- Genetic Department, Faculty of Agriculture, Ain Shams University, Cairo, Egypt
- Biotechnology School, Nile University, Sheikh Zayed, Giza, Egypt
| | - Zoubeyda Kaouadji
- Applied Genetic in Agriculture, Ecology and Public Health Laboratory, SNV/STU Faculty, University of Tlemcen, Chetouane, Algeria
| | - Othman E Othman
- Cell Biology Department, Biotechnology Research Institute, National Research Centre, Dokki, 12622, Giza, Egypt
| | - Miroslav Obornik
- Biology Centre, Institute of Parasitology, Czech Academy of Sciences, České Budějovice, Czech Republic
- Faculty of Science, University of South Bohemia, České Budějovice, Czech Republic
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Ojo RJ, Paul GM, Magellan DD, Dangara DN, Gyebi G. Trypanosoma brucei brucei Induced Hypoglycaemia Depletes Hepatic Glycogen and Altered Hepatic Hexokinase and Glucokinase Activities in Infected Mice. Acta Parasitol 2022. [PMID: 35476260 DOI: 10.1007/s11686-022-00550-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Accepted: 04/04/2022] [Indexed: 11/27/2022]
Abstract
PURPOSE Little progress has been made in understanding the effect of Trypanosoma brucei brucei infection that was allowed to run its course without treatment on human and animal carbohydrate metabolism even though most of the symptoms associated with the disease can be clearly linked with interference with host energy generation. The present study therefore assessed the course of untreated Trypanosoma brucei brucei infection on hepatic glycogen, hepatic hexokinase and glucokinase activities. METHODS Mice were grouped into two: control and infected group. Trypanosomiasis was induced by intraperitoneal inoculation of 1 × 104 parasites/mice in 0.3 ml of phosphate saline glucose. The infection was allowed to run its course until the first mortality was recorded with all the mice showing chronic symptoms of the second stage of the disease before the research was terminated. Blood and liver samples were collected from the mice in each group for the assessment of hepatic glycogen and total protein, hepatic hexokinase and glucokinase activities, liver biomarkers, blood glucose and protein with packed cell volume. RESULTS The infection resulted in decrease in blood glucose, hepatic glycogen, liver protein, PCV, hepatic hexokinase and glucokinase activities, but increase in serum total protein and liver biomarkers. CONCLUSION Trypanosomiasis negatively affects hepatic integrity, resulting in the depletion of hepatic glycogen content and suppression of both hepatic hexokinase and glucokinase activities. The suppression of hepatic hexokinase and glucokinase activities suggested that trypanosomiasis affected the oxidation of glucose and host energy generation via glycolysis. This probably denied the host of the needed energy which is likely the reason for early death in untreated African trypanosomiasis.
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Sarma K, Eregowda CG, Roychoudhury P, Borthakur SK, Jawalagatti V, Prasad H, Behera SK, Thakur N, Bora N, Das D. A 5-Year Prospective Study on Incidence and Clinico-pathological Changes Associated with Naturally Occurring Trypanosomosis in Dogs of Mizoram, India. Acta Parasitol 2022; 67:61-71. [PMID: 34138413 DOI: 10.1007/s11686-021-00425-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Accepted: 05/20/2021] [Indexed: 11/30/2022]
Abstract
PURPOSE The present research was taken to study the hospital-based incidence and clinico-pathological changes associated with naturally occurring trypanosomosis in dogs of Mizoram. METHODS A 5-year prospective study on hospital-based incidence and clinico-pathological changes associated with naturally occurring trypanosomosis in dogs of Mizoram was carried out during the study period from April, 2015 to March, 2020. Trypanosoma evansi infection was confirmed by microscopic examination and polymerase chain reaction (PCR). Non-infected clinically healthy dogs (n = 6) served as control. Blood samples were collected to study the haemogram and serum samples were used for the evaluation of serum biochemical parameters and oxidant-antioxidant parameters. RESULTS During the study period, an overall incidence of 0.25% was recorded for trypanosomosis in dogs. The most consistent clinical findings noticed were anorexia/inappetence, pyrexia, depression/lethargy, pale mucous membrane, dehydration and lymphadenomegaly. Anaemia, granulocytopenia, lymphocytosis and thrombocytopenia were the major findings noticed in trypanosomosis affected dogs. The profile of vital organ function revealed that the mean values of total protein, albumin and random blood glucose were significantly (P < 0.05) lower, whereas the mean values of alanine aminotransferase (ALT), aspartate aminotransferase (AST), alkaline phosphatase (ALP), total bilirubin, blood urea nitrogen (BUN) and creatinine were significantly (P < 0.05) higher in dogs affected with trypanosomosis. The mean value of lipid hydroperoxide (LPO) was significantly (P < 0.05) higher, whereas the mean values of glutathione (GSH), superoxide dismutase (SOD) and total antioxidant activity (TAOA) were significantly (P < 0.05) lower in trypanosomosis affected dogs. When total erythrocyte count (TEC) was correlated with LPO (r = - 0.631, P < 0.05), a negative correlation was found, while in case of GSH (r = 0.757, P < 0.05), SOD (r = 0.767, P < 0.05) and TAOA (r = 0.713, P < 0.05), it was positively correlated. CONCLUSION A negative correlation of TEC count with LPO, while a positive correlation with GSH, SOD and TAOA signify the role of oxidative stress in the pathogenesis of anaemia induced by T. evansi infection in dogs. The present study findings might be helpful to clinicians when treating clinical cases of this kind. Incorporation of organ protective drugs and antioxidants in the treatment schedule may result in better prognosis.
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Affiliation(s)
- Kalyan Sarma
- Department of Veterinary Medicine, College of Veterinary Sciences and Animal Husbandry, Central Agricultural University, Selesih, Aizawl, Mizoram, 796014, India
- Teaching Veterinary Clinical Complex, College of Veterinary Sciences and Animal Husbandry, Central Agricultural University, Selesih, Aizawl, Mizoram, 796014, India
| | - Chethan Gollahalli Eregowda
- Department of Veterinary Medicine, College of Veterinary Sciences and Animal Husbandry, Central Agricultural University, Selesih, Aizawl, Mizoram, 796014, India.
- Teaching Veterinary Clinical Complex, College of Veterinary Sciences and Animal Husbandry, Central Agricultural University, Selesih, Aizawl, Mizoram, 796014, India.
| | - Parimal Roychoudhury
- Department of Veterinary Microbiology, College of Veterinary Sciences and Animal Husbandry, Central Agricultural University, Selesih, Aizawl, Mizoram, 796014, India
| | - Sonjoy Kumar Borthakur
- Department of Veterinary Parasitology, College of Veterinary Sciences and Animal Husbandry, Central Agricultural University, Selesih, Aizawl, Mizoram, 796014, India
| | - Vijayakumar Jawalagatti
- Division of Parasitology, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly, Uttar Pradesh, 243122, India
- Jeonbuk National University, Jeonju, 54596, South Korea
| | - Hridayesh Prasad
- Department of Veterinary Medicine, College of Veterinary Sciences and Animal Husbandry, Central Agricultural University, Selesih, Aizawl, Mizoram, 796014, India
- Teaching Veterinary Clinical Complex, College of Veterinary Sciences and Animal Husbandry, Central Agricultural University, Selesih, Aizawl, Mizoram, 796014, India
| | - Suvendu Kumar Behera
- Department of Veterinary Medicine, College of Veterinary Sciences and Animal Husbandry, Central Agricultural University, Selesih, Aizawl, Mizoram, 796014, India
- Teaching Veterinary Clinical Complex, College of Veterinary Sciences and Animal Husbandry, Central Agricultural University, Selesih, Aizawl, Mizoram, 796014, India
| | - Neeraj Thakur
- Department of Veterinary Clinical Complex, Faculty of Veterinary and Animal Sciences, RGSC-Banaras Hindu University, Barkachha, Mirzapur, Uttar Pradesh, 231001, India
| | - Nikitasha Bora
- Department of Veterinary Medicine, College of Veterinary Sciences and Animal Husbandry, Central Agricultural University, Selesih, Aizawl, Mizoram, 796014, India
- Teaching Veterinary Clinical Complex, College of Veterinary Sciences and Animal Husbandry, Central Agricultural University, Selesih, Aizawl, Mizoram, 796014, India
| | - Dhruba Das
- Department of Veterinary Medicine, College of Veterinary Sciences and Animal Husbandry, Central Agricultural University, Selesih, Aizawl, Mizoram, 796014, India
- Teaching Veterinary Clinical Complex, College of Veterinary Sciences and Animal Husbandry, Central Agricultural University, Selesih, Aizawl, Mizoram, 796014, India
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Agina OA, Cheah KT, Sayuti NSA, Shaari MR, Isa NMM, Ajat M, Zamri-Saad M, Mazlan M, Hamzah H. High Granulocyte-Macrophage Colony Stimulating Factor to Interleukin 10 Ratio and Marked Antioxidant Enzyme Activities Predominate in Symptomatic Cattle Naturally Infected with Candidatus Mycoplasma haemobos, Theileria orientalis, Theileria sinensis and Trypanosoma evansi. Animals (Basel) 2021; 11:ani11082235. [PMID: 34438696 PMCID: PMC8388426 DOI: 10.3390/ani11082235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Revised: 05/26/2021] [Accepted: 05/27/2021] [Indexed: 11/16/2022] Open
Abstract
The aim of this study was to measure the serum proinflammatory (IL-12, GM-CSF & IFN-γ) to anti-inflammatory (IL-10, IL-4) cytokine ratio, oxidant (MDA) level and antioxidant enzyme (SOD; GPx) activities after blood parasite infections. The blood and serum samples were obtained from 130 cattle and screened for identity of the infecting blood parasites by conventional PCR. The following blood parasite species were detected: Candidatus Mycoplasma haemobos (70/130); Theileria orientalis (65/130); Theileria sinensis (32/130); Anaplasma marginale (49/130); Anaplasma platys (7/130); and Trypanosoma evansi (4/130). The GM-CSF/IL-10 ratio showed significantly higher values in all the symptomatic blood parasite infected cattle groups except for symptomatic A. platys infected cattle groups. Anti-inflammatory cytokine immune responses were notable findings in symptomatic and asymptomatic cattle infected with C. M. haemobos and T. orientalis characterized by low serum IL-12:IL-10, IFN-γ:IL-10, IL-12:IL-4 and IFN-γ:IL-4 (p < 0.05). Therefore, high serum GM-CSF:IL:10 in the symptomatic blood parasite infected cattle, low serum IL-12:IL-10, IFN-γ:IL-10, IL-12:IL-4 and IFN-γ:IL-4 ratios in asymptomatic cattle, high MDA level, and increased antioxidant enzyme activities could be useful predictive tools for outcome of natural blood parasite infections in cattle.
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Affiliation(s)
- Onyinyechukwu Ada Agina
- Department of Veterinary Pathology and Microbiology, Faculty of Veterinary Medicine, Universiti Putra Malaysia, Serdang 43400, Malaysia; (K.T.C.); (N.S.A.S.); (N.M.M.I.); (M.M.)
- Department of Veterinary Pathology and Microbiology, Faculty of Veterinary Medicine, University of Nigeria, Nsukka 410001, Nigeria
- Correspondence: (O.A.A.); (H.H.); Tel.: +234-70-3901-0464 (O.A.A.); +60-19-2846-897 (H.H.)
| | - Kim Tho Cheah
- Department of Veterinary Pathology and Microbiology, Faculty of Veterinary Medicine, Universiti Putra Malaysia, Serdang 43400, Malaysia; (K.T.C.); (N.S.A.S.); (N.M.M.I.); (M.M.)
| | - Nurul Syahirah Ahmad Sayuti
- Department of Veterinary Pathology and Microbiology, Faculty of Veterinary Medicine, Universiti Putra Malaysia, Serdang 43400, Malaysia; (K.T.C.); (N.S.A.S.); (N.M.M.I.); (M.M.)
| | - Mohd Rosly Shaari
- Animal Science Research Centre, Malaysian Agricultural Research and Development Institute, Serdang 43400, Malaysia;
| | - Nur Mahiza Md Isa
- Department of Veterinary Pathology and Microbiology, Faculty of Veterinary Medicine, Universiti Putra Malaysia, Serdang 43400, Malaysia; (K.T.C.); (N.S.A.S.); (N.M.M.I.); (M.M.)
| | - Mokrish Ajat
- Department of Pre-Clinical Sciences, Faculty of Veterinary Medicine, Universiti Putra Malaysia, Serdang 43400, Malaysia;
| | - Mohd Zamri-Saad
- Centre for Ruminant Diseases, Faculty of Veterinary Medicine, Universiti Putra Malaysia, Serdang 43400, Malaysia;
| | - Mazlina Mazlan
- Department of Veterinary Pathology and Microbiology, Faculty of Veterinary Medicine, Universiti Putra Malaysia, Serdang 43400, Malaysia; (K.T.C.); (N.S.A.S.); (N.M.M.I.); (M.M.)
| | - Hazilawati Hamzah
- Department of Veterinary Pathology and Microbiology, Faculty of Veterinary Medicine, Universiti Putra Malaysia, Serdang 43400, Malaysia; (K.T.C.); (N.S.A.S.); (N.M.M.I.); (M.M.)
- Correspondence: (O.A.A.); (H.H.); Tel.: +234-70-3901-0464 (O.A.A.); +60-19-2846-897 (H.H.)
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Amin YA, Noseer EA, Fouad SS, Ali RA, Mahmoud HYAH. Changes of reproductive indices of the testis due to Trypanosoma evansi infection in dromedary bulls ( Camelus dromedarius): Semen picture, hormonal profile, histopathology, oxidative parameters, and hematobiochemical profile. J Adv Vet Anim Res 2020; 7:537-545. [PMID: 33005681 PMCID: PMC7521820 DOI: 10.5455/javar.2020.g451] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 06/22/2020] [Accepted: 07/11/2020] [Indexed: 11/26/2022] Open
Abstract
Objective: IThis study was designed for the investigation of the effect of infection by Trypanosoma evansi on the changes of reproductive indices of the testis, causing reproductive failure in dromedary bulls (Camelus dromedarius). Materials and methods: Seventy-five bulls were used for monitoring of the changes in the semen characteristics, reproductive hormones, hematobiochemical profiles, histopathological characters in the testis, and oxidative biomarkers. The animals were divided into two groups. Group A represented the uninfected or control group, while group B represented the infected group. Group B was again divided into two subgroups, such as acute and chronic infected animals. Results: Results showed that the semen analysis of infected camels revealed the presence of alterations in the morphology of sperms, especially the heads and tails, as compared to control animals. The hormonal profile indicated a significant decrease in the luteinizing hormone, follicle- stimulating hormone, and testosterone levels, accompanied by the rise in the cortisol level in infected camels compared with the negative control. The histopathology and testicular degeneration were found to be associated with other disorders in infected camels. The oxidative profile and protein oxidation were promoted in infected testicles, indicating the occurrence of harmful effects in the cell. Conclusion: It is concluded that T. evansi infection in dromedary bulls causes severe damage to the testicular tissue and decreases the reproductive hormone levels associated with severe morphological disorders in sperms due to oxidative stress resulting from the infection. All these findings indicate that T. evansi can cause reproductive failure and fertility damage.
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Affiliation(s)
- Yahia A Amin
- Department of Theriogenology, Faculty of Veterinary Medicine, Aswan University, Aswan, Egypt
| | - Enas A Noseer
- Department of Biochemistry, Faculty of Veterinary Medicine, Aswan University, Aswan, Egypt
| | - Samer S Fouad
- PHD of Clinical Pathology of Veterinary Medicine, Qena University Hospital, South Valley University, Qena, Egypt
| | - Rana A Ali
- Department of Zoology, Faculty of Science, South Valley University, Qena, Egypt
| | - Hassan Y A H Mahmoud
- Division of Infectious Diseases, Animal Medicine Department, Faculty of Veterinary Medicine, South Valley University, Qena, Egypt
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Saad SB, Ibrahim MA, Jatau ID, Shuaibu MN. The therapeutic potential of phytol towards Trypanosoma congolense infection and the inhibitory effects against trypanosomal sialidase. Exp Parasitol 2020; 216:107943. [PMID: 32598890 DOI: 10.1016/j.exppara.2020.107943] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2020] [Revised: 06/04/2020] [Accepted: 06/19/2020] [Indexed: 11/30/2022]
Abstract
The search for novel therapeutic candidates against animal trypanosomiasis is an ongoing scientific endevour because of the negative impacts of the disease to the African livestock industry. In this study, the in vivo therapeutic potentials of phytol toward Trypanosoma congolense infection and the inhibitory effects on trypanosomal sialidase were investigated. Rats were infected with T. congolense and administered daily oral treatment of 50 and 100 mg/kg BW of phytol. Within the first 10 days of the treatment, no antitrypanosomal activity was recorded but a moderate trypanostatic activity was observed from day 17-day 21 pi. However, at 100 mg/kg BW, phytol demonstrated a significant (p < 0.05) ameliorative potentials toward T. congolense-induced host-associated pathological damages such as anaemia, hepatic and renal damages; and the data was comparable to diminazine aceturate. Moreover, the T. congolense caused a significant (p < 0.05) increase in free serum sialic acid level which was significantly (p < 0.05) prevented in the presence of phytol (100 mg/kg BW). In an in vitro analysis, phytol inhibited partially purified T. congolense sialidase using an uncompetitive inhibition pattern with inhibition binding constant of 261.24 μmol/mL. Subsequently, molecular docking revealed that the compound binds to homology modelled trypanosomal sialidase with a binding free energy of -6.7 kcal/mol which was mediated via a single hydrogen bond while Trp324 and Pro274 were the critical binding residues. We concluded that phytol has moderate trypanostatic activity but with a great potential in mitigating the host-associated cellular damages while the anaemia amelioration was mediated, in part, through the inhibition of sialidase.
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Affiliation(s)
- Saad Bello Saad
- Department of Biochemistry, Ahmadu Bello University, Zaria, Nigeria; Department of Biochemistry, Yusuf Maitama Sule University, Kano, Nigeria
| | | | - Isa Danladi Jatau
- Department of Veterinary Parasitology and Entomology, Ahmadu Bello University, Zaria, Nigeria
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Ghaemi M, Zavarib A, Jannati Pirouz H. Evaluation of Trypanosama evansi prevalence and risk factors in the one-humped camels (Camelus dromedarius) of the north-east of Iran by a real-time PCR test. Prev Vet Med 2019; 168:60-5. [PMID: 31097124 DOI: 10.1016/j.prevetmed.2019.04.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2018] [Revised: 03/03/2019] [Accepted: 04/25/2019] [Indexed: 01/12/2023]
Abstract
The Surra caused by Trypanosoma evansi (T. evansi) is an economically damaging disease of livestock including camels, horses, and buffaloes. The disease is transmitted by arthropod flies belonging to family tabanidae. The clinical signs of affected animals include recurrent fever, progressive anemia, cachexia, edema, and abortion. In order to determine the point prevalence of Surra in the camel population of north-east of Iran, 152 blood samples from one-humped camels were collected by multiple cluster sampling methods from three provinces, namely, Razavi Khorasan (R.Kh.), Northern Khorasan (N.Kh.), and Southern Khorasan (S.Kh.). The nucleic acid extracted from the buffy coat of each blood sample was analyzed by SYBR green real-time PCR test for the detection of T. evansi in the blood samples. T. evansi was detected in 10 out of 152 camel blood samples (6.5%) with a prevalence rate of 8.6, 9.3, and 1.4 percent in R.Kh., N.Kh., and S.Kh. provinces, respectively. The prevalence of the disease decreased from north to south in the Khorasan provinces. Multivariate logistic regression analyses showed that among risk factors influencing Surra in the camel population, location was the most remarkable risk factor. Different geographical conditions, climate change, and the amount of raining can be considered as the factors affecting Surra vector population from north to south, resulting in a decrease in the rate of the prevalence of Surra from north to south.
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