Detection of Theileria equi and Babesia caballi using microscopic and molecular methods in horses in suburb of Urmia, Iran.
Abstract: Equine piroplasmosis is a severe disease of horses caused by the intra-erythrocyte protozoan, Theileria equi and Babesia caballi. The aim of this study was to identify equine piroplasmosis based on molecular and morphometrical features in horses in suburb of Urmia, West Azerbaijan province, Iran. From April to September 2011, a total number of 240 blood samples were collected randomly from horses of 25 villages. The specimens were transferred to the laboratory and the blood smears stained with Geimsa, and the morphological and biometrical data of parasite in any infected erythrocyte were considered. Extracted DNA from each blood sample was used in multiplex PCR in order to confirm the presence of B. caballi and T. equi. Microscopic observation on 240 blood smears determined that 15 (6.25%) and 5 (2.80%) samples were infected by T. equi and B. caballi, respectively. The mixed infections occurred in 2 (0.83%) samples. The results of the PCR assays showed 26 (10.83%), 14 (5.83%) and 4 (1.66%) were distinguished as T. equi, B. caballi and mixed infection, respectively. Differences in infection rates were statistically nonsignificant between male and female horses and among different age groups. Our findings indicated that T. equi and B. caballi were prevalent in horse population.
Publication Date: 2015-01-09 PubMed ID: 25568706PubMed Central: PMC4279624
The Equine Research Bank provides access to a large database of publicly available scientific literature. Inclusion in the Research Bank does not imply endorsement of study methods or findings by Mad Barn.
- Journal Article
Summary
This research summary has been generated with artificial intelligence and may contain errors and omissions. Refer to the original study to confirm details provided. Submit correction.
This research aimed to detect and analyse the prevalence of equine piroplasmosis, a severe disease in horses caused by Theileria equi and Babesia caballi parasites, in Iran’s west Azerbaijan province. Using molecular and microscopic methods on samples randomly collected from horses in 25 villages, the study found that T. equi and B. caballi infections were present in the examined horse population.
Research Objective and Methodology
- The research was conducted to identify and understand the prevalence of equine piroplasmosis, a debilitating condition for horses. This disease is caused by two protozoan parasites – Theileria equi and Babesia caballi -which inhabit the red blood cells of the infected horse.
- The study was carried out in Urmia, a city in Iran’s West Azerbaijan province, from April to September 2011. To ensure randomness, blood samples were taken from horses in 25 different villages.
- Inspectors carefully painted the collected samples with a Geimsa stain, a common laboratory technique for highlighting cells’ morphological and biometrical attributes.
- After collecting and preparing the samples, the researchers extracted the DNA and ran multiplex PCR tests. This process helped verify the presence of T. equi and B. caballi in each sample.
Results
- Out of the 240 blood samples collected, 15 (or 6.25%) and 5 (or 2.8%) were found to be infected by T. equi and B. caballi respectively through microscopic observation.
- 2 (or 0.83%) samples exhibited a mixed infection, indicating the simultaneous presence of both parasites.
- The PCR tests further re-affirmed and extended these findings – confirming that 26 (or 10.83%), 14 (or 5.83%), and 4 (or 1.66%) were T. equi, B. caballi, and mixed infections respectively.
- There were no significant statistical differences seen in infection rates when compared between male and female horses, nor among varied age groups.
Conclusions
- The results of this research suggest that both Theileria equi and Babesia caballi microorganisms are prevalent in the horse population within the mentioned region.
- The findings of the study are critical as they shed light on the extent and severity of equine piroplasmosis in northwest Iran, which may guide effective disease management and prevention strategies.
Cite This Article
APA
Malekifard F, Tavassoli M, Yakhchali M, Darvishzadeh R.
(2015).
Detection of Theileria equi and Babesia caballi using microscopic and molecular methods in horses in suburb of Urmia, Iran.
Vet Res Forum, 5(2), 129-133.
Publication
Researcher Affiliations
- Department of Pathobiology, Faculty of Veterinary Medicine, Urmia University, Urmia, Iran;
- Department of Pathobiology, Faculty of Veterinary Medicine, Urmia University, Urmia, Iran;
- Department of Pathobiology, Faculty of Veterinary Medicine, Urmia University, Urmia, Iran;
- Department of Agronomy and Plant Breeding, Faculty of Agriculture, Urmia University, Urmia, Iran.
References
This article includes 38 references
- Mehlhorn H, Schein E. Redescription of Babesia equi Laveran, 1901 as Theileria equi Mehlhorn, Schein 1998.. Parasitol Res 1998 Jun;84(6):467-75.
- Alhassan A, Govind Y, Tam NT, Thekisoe OM, Yokoyama N, Inoue N, Igarashi I. Comparative evaluation of the sensitivity of LAMP, PCR and in vitro culture methods for the diagnosis of equine piroplasmosis.. Parasitol Res 2007 Apr;100(5):1165-8.
- Schein E. Equine babesiosis.. In: Ristic M, editor. Babesiosis of Domestic Animals and Man. Boca Raton, USA: CRS Press ; 1988. pp. 197–208.
- Uilenberg G. Babesia--a historical overview.. Vet Parasitol 2006 May 31;138(1-2):3-10.
- Friedhoff KT, Tenter AM, Müller I. Haemoparasites of equines: impact on international trade of horses.. Rev Sci Tech 1990 Dec;9(4):1187-94.
- de Waal DT. Equine piroplasmosis: a review.. Br Vet J 1992 Jan-Feb;148(1):6-14.
- Friedhoff KT, Soulé C. An account on equine babesioses.. Rev Sci Tech 1996 Sep;15(3):1191-201.
- Battsetseg B, Xuan X, Ikadai H, Bautista JL, Byambaa B, Boldbaatar D, Battur B, Battsetseg G, Batsukh Z, Igarashi I, Nagasawa H, Mikami T, Fujisaki K. Detection of Babesia caballi and Babesia equi in Dermacentor nuttalli adult ticks.. Int J Parasitol 2001 Apr;31(4):384-6.
- Zobba R, Ardu M, Niccolini S. Clinical and laboratory findings in equine piroplasmosis.. J Equine Vet Sci 2008;28(5):301–308.
- Xu Y, Zhang S, Huang X, Bayin C, Xuan X, Igarashi I, Fujisaki K, Kabeya H, Maruyama S, Mikami T. Seroepidemiologic studies on Babesia equi and Babesia caballi infections in horses in Jilin province of China.. J Vet Med Sci 2003 Sep;65(9):1015-7.
- Alhassan A, Pumidonming W, Okamura M, Hirata H, Battsetseg B, Fujisaki K, Yokoyama N, Igarashi I. Development of a single-round and multiplex PCR method for the simultaneous detection of Babesia caballi and Babesia equi in horse blood.. Vet Parasitol 2005 Apr 20;129(1-2):43-9.
- Kuttler KL. Chemotherapy of babesiosis.. In: Ristic M, editor. Babesiosis of domestic animals and man. Boca Raton, USA: CRS Press ; 1988. pp. 227–243.
- Shayan P, Hooshmand E, Nabian S, Rahbari S. Biometrical and genetical characterization of large Babesia ovis in Iran.. Parasitol Res 2008 Jun;103(1):217-21.
- Dehkordi ZS, Zakeri S, Nabian S, Bahonar A, Ghasemi F, Noorollahi F, Rahbari S. Molecular and biomorphometrical identification of ovine babesiosis in iran.. Iran J Parasitol 2010 Dec;5(4):21-30.
- Persing DH, Herwaldt BL, Glaser C, Lane RS, Thomford JW, Mathiesen D, Krause PJ, Phillip DF, Conrad PA. Infection with a babesia-like organism in northern California.. N Engl J Med 1995 Feb 2;332(5):298-303.
- Geysen D, Delespaux V, Geerts S. PCR-RFLP using Ssu-rDNA amplification as an easy method for species-specific diagnosis of Trypanosoma species in cattle.. Vet Parasitol 2003 Jan 2;110(3-4):171-80.
- Buling A, Criado-Fornelio A, Asenzo G, Benitez D, Barba-Carretero JC, Florin-Christensen M. A quantitative PCR assay for the detection and quantification of Babesia bovis and B. bigemina.. Vet Parasitol 2007 Jun 20;147(1-2):16-25.
- Jefferies R, Ryan UM, Irwin PJ. PCR-RFLP for the detection and differentiation of the canine piroplasm species and its use with filter paper-based technologies.. Vet Parasitol 2007 Mar 15;144(1-2):20-7.
- Abedi V, Razmi GH, Seifi H. Survey of piro-plasmosis in horses of Turkoman breed horses by serological methods.. The 1st national congress and festival of pure persian horse breeds; Tehran, Iran. 2012. p. 188.
- Aslani M. One case study of Babesia caballi in horse.. he 1st Congress of horse disease; Tehran, Iran . 1996. p. 125.
- Mohammadzade H. Survey of infection of equids with microfillers in Urmia region.. DVM thesis. Urmia Azad University; No 351, 1999; 35.
- Seifi HA, Mohri M, Sardari K. A mixed infection of Babesia equi and Babesia caballi in a racing colt: A report from Iran.. J Equine Vet Sci 2000;20(12):858–860.
- Sakha M. Successful treatment of babesiosis in a horse.. J Vet Res 2007;62(4):155–157.
- Tavassoli M, Dalir-Naghadeh B, Esmaeili-Sani S. Prevalence of gastrointestinal parasites in working horses.. Pol J Vet Sci 2010;13(2):319-24.
- Levine ND. Taxonomy of the piroplasms.. Trans Am Micros Soc 1971;90(1):2–33.
- Irwin PJ. Canine babesiosis.. Vet Clin North Am Small Anim Pract 2010 Nov;40(6):1141-56.
- Kubelová M, Sedlák K, Panev A, Široký P. Conflicting results of serological, PCR and microscopic methods clarify the various risk levels of canine babesiosis in Slovakia: a complex approach to Babesia canis diagnostics.. Vet Parasitol 2013 Jan 31;191(3-4):353-7.
- Soulsby EJL. Helmints, arthropods and protozoa of domesticated animals.. 7th ed. London, UK: Bailliere & Tindall ; 1982. pp. 719–723.
- Bashiruddin JB, Cammà C, Rebêlo E. Molecular detection of Babesia equi and Babesia caballi in horse blood by PCR amplification of part of the 16S rRNA gene.. Vet Parasitol 1999 Jul;84(1-2):75-83.
- Razmi GR, Naghibi A, Aslani MR, Fathivand M, Dastjerdi K. An epidemiological study on ovine babesiosis in the Mashhad suburb area, province of Khorasan, Iran.. Vet Parasitol 2002 Sep 10;108(2):109-15.
- De waal DT. Distribution, transmission and sero-diagnosis of Babesia equi and Babesia caballi in South Africa.. PhD Thesis. University of Pretoria; 1995.
- Zweygarth E, Lopez-Rebollar LM, Nurton J, Guthrie AJ. Culture, isolation and propagation of Babesia caballi from naturally infected horses.. Parasitol Res 2002 May;88(5):460-2.
- De waal DT. Global importance of piroplasmosis.. J Protozool Res 2000;10:106–127.
- Salim BO, Hassan SM, Bakheit MA, Alhassan A, Igarashi I, Karanis P, Abdelrahman MB. Diagnosis of Babesia caballi and Theileria equi infections in horses in Sudan using ELISA and PCR.. Parasitol Res 2008 Oct;103(5):1145-50.
- Akkan HA, Karaca M, Tutuncu M. Serologic and microscopic studies on babesiosis in horses in the eastern border of Turkey.. J Equine Vet Sci 2003;23(5):181–183.
- Balkaya I, Erdogmus SZ. Investigation of prevalence of Babesia equi (Laveran, 1901) and Babesia caballi (Nuttall, 1910) in horses by serological methods in Elazig and Malatya province.. Firat Uni J Health 2006;20:61–63.
- Piskin C, Deniz A, Utuk AE. Seroprevalance of dourine and equine piroplasmosis in horses between the years 2002-2007 in Turkey.. The 17th international conference of racing analysts and veterinarians; Antalya, Turkey. 2008. p. 76.
- Güçlü HZ, Karaer KZ. [Detection of Babesia caballi (Nuttall, 1910) and Theileria equi (Syn. Babesia equi , Laveran, 1901) by the polymerase chain reaction (PCR) in show and sport horses in the region of Ankara].. Turkiye Parazitol Derg 2007;31(2):89-93.
Citations
This article has been cited 15 times.- Lv K, Zhang Y, Yang Y, Liu Z, Deng L. Development of Nested PCR and Duplex Real-Time Fluorescence Quantitative PCR Assay for the Simultaneous Detection of Theileria equi and Babesia caballi. Front Vet Sci 2022;9:873190.
- Tirosh-Levy S, Gottlieb Y, Fry LM, Knowles DP, Steinman A. Twenty Years of Equine Piroplasmosis Research: Global Distribution, Molecular Diagnosis, and Phylogeny. Pathogens 2020 Nov 8;9(11).
- Onyiche TE, Taioe MO, Molefe NI, Biu AA, Luka J, Omeh IJ, Yokoyama N, Thekisoe O. Equine piroplasmosis: an insight into global exposure of equids from 1990 to 2019 by systematic review and meta-analysis. Parasitology 2020 Nov;147(13):1411-1424.
- Khamesipour F, Taktaz-Hafshejani T, Tebit KE, Razavi SM, Hosseini SR. Prevalence of endo- and ecto-parasites of equines in Iran: A systematic review. Vet Med Sci 2021 Jan;7(1):25-34.
- Onyiche TE, Suganuma K, Igarashi I, Yokoyama N, Xuan X, Thekisoe O. A Review on Equine Piroplasmosis: Epidemiology, Vector Ecology, Risk Factors, Host Immunity, Diagnosis and Control. Int J Environ Res Public Health 2019 May 16;16(10).
- Smith RM, Bhoora RV, Kotzé A, Grobler JP, Lee Dalton D. Translocation a potential corridor for equine piroplasms in Cape mountain zebra (Equus zebra zebra). Int J Parasitol Parasites Wildl 2019 Aug;9:130-133.
- Díaz-Sánchez AA, Pires MS, Estrada CY, Cañizares EV, Del Castillo Domínguez SL, Cabezas-Cruz A, Rivero EL, da Fonseca AH, Massard CL, Corona-González B. First molecular evidence of Babesia caballi and Theileria equi infections in horses in Cuba. Parasitol Res 2018 Oct;117(10):3109-3118.
- Soosaraei M, Haghi MM, Etemadifar F, Fakhar M, Teshnizi SH, Hezarjaribi HZ, Asfaram S. Status of theileriosis among herbivores in Iran: A systematic review and meta-analysis. Vet World 2018 Mar;11(3):332-341.
- Montes Cortés MG, Fernández-García JL, Habela Martínez-Estéllez MÁ. Seroprevalence of Theileria equi and Babesia caballi in horses in Spain. Parasite 2017;24:14.
- Haghi MM, Etemadifar F, Fakhar M, Teshnizi SH, Soosaraei M, Shokri A, Hajihasani A, Mashhadi H. Status of babesiosis among domestic herbivores in Iran: a systematic review and meta-analysis. Parasitol Res 2017 Apr;116(4):1101-1109.
- Habibi G, Esmaeilnia K, Hablolvarid MH, Afshari A, Zamen M, Bozorgi S. Microscopic and Molecular Detection of Theileria (Babesia) Equi Infection in Equids of Kurdistan Province, Iran. Iran J Parasitol 2016 Jan-Mar;11(1):86-90.
- Gupta KK, Gupta N, Kumar S, Srivastava M, Kumar P. Equine piroplasmosis: an emerging tick-borne threat to equine health. Trop Anim Health Prod 2026 Jan 5;58(1):29.
- Soliman AM, Elhawary NM, Helmy NM, El-Seify MA, Amer MM, Mohamed S, Memon FU, Rashid MHO, Gadelhaq SM. Molecular detection and genotyping of Theileria equi infection within the equine population in Giza, Egypt, using real-time PCR as compared with conventional detection methods. Iran J Vet Res 2025;26(2):145-151.
- Mohammad-Naseri A, Shokrani H, Rahmani-Shahraki A. Equine Piroplasmosis in Asymptomatic Horses of Western Iran: Comparison of Microscopic Examination and Multiplex PCR. Acta Parasitol 2024 Mar;69(1):813-818.
- Sazmand A, Bahari A, Papi S, Otranto D. Parasitic diseases of equids in Iran (1931-2020): a literature review. Parasit Vectors 2020 Nov 19;13(1):586.
Use Nutrition Calculator
Check if your horse's diet meets their nutrition requirements with our easy-to-use tool Check your horse's diet with our easy-to-use tool
Talk to a Nutritionist
Discuss your horse's feeding plan with our experts over a free phone consultation Discuss your horse's diet over a phone consultation
Submit Diet Evaluation
Get a customized feeding plan for your horse formulated by our equine nutritionists Get a custom feeding plan formulated by our nutritionists