1
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Spada E, Galluzzo P, Torina A, Loria GR, Perego R, Grippi F, Blanda V, Baggiani L, D'Amico A, Pennisi MG, Helps CR, Malik R, Westman M, Gandolfi B, Spencer S, Proverbio D, Tasker S. Evaluating the association between blood genotype or phenotype and haemoplasma infection in UK and Italian cats. Vet Rec 2022:e2282. [PMID: 36222468 DOI: 10.1002/vetr.2282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Revised: 08/29/2022] [Accepted: 09/21/2022] [Indexed: 11/08/2022]
Abstract
BACKGROUND In humans, blood groups are associated with varying prevalence of infections. The aim of this study was to determine if associations exist between the feline AB blood group system and haemoplasma infection. METHODS Data from two studies were combined. In the first study, DNA samples from 131 haemoplasma-infected and 132 haemoplasma-uninfected UK cats underwent pyrosequencing to determine their blood genotype as AA, Ab or bb. In the second study, blood samples from 160 Italian cats of known blood phenotype A, B or AB underwent PCR testing for feline haemoplasma species DNA. RESULTS Haemoplasma infection was demonstrated in cats of all phenotypes and genotypes. A significantly higher number of Ab genotype cats tested positive for overall haemoplasma infection status (p = 0.04) and for Mycoplasma haemofelis infection (p = 0.03). LIMITATIONS Haemoplasma-infected Italian cats were few, possibly increasing the chance of type II error, and the presence of purebred cats in the sample population may have had a confounding effect. CONCLUSIONS Feline haemoplasmas do not appear to preferentially use either blood type A or B antigens as attachment sites for erythrocyte colonisation. Further investigations in a larger number of haemoplasma-infected cats of known blood phenotype are warranted to explain the association between genotype Ab and haemoplasma infection.
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Affiliation(s)
- Eva Spada
- Department of Veterinary Medicine and Animal Sciences (DIVAS), University of Milan, Lodi, Italy
| | - Paola Galluzzo
- Istituto Zooprofilattico Sperimentale della Sicilia 'Adelmo Mirri', Palermo, Italy
| | - Alessandra Torina
- Istituto Zooprofilattico Sperimentale della Sicilia 'Adelmo Mirri', Palermo, Italy
| | - Guido R Loria
- Istituto Zooprofilattico Sperimentale della Sicilia 'Adelmo Mirri', Palermo, Italy
| | - Roberta Perego
- Department of Veterinary Medicine and Animal Sciences (DIVAS), University of Milan, Lodi, Italy
| | - Francesca Grippi
- Istituto Zooprofilattico Sperimentale della Sicilia 'Adelmo Mirri', Palermo, Italy
| | - Valeria Blanda
- Istituto Zooprofilattico Sperimentale della Sicilia 'Adelmo Mirri', Palermo, Italy
| | - Luciana Baggiani
- Department of Veterinary Medicine and Animal Sciences (DIVAS), University of Milan, Lodi, Italy
| | - Alessia D'Amico
- Department of Veterinary Medicine and Animal Sciences (DIVAS), University of Milan, Lodi, Italy
| | - Maria G Pennisi
- Department of Veterinary Sciences, University of Messina, Messina, Italy
| | - Chris R Helps
- Langford Vets, Bristol Veterinary School, University of Bristol, Langford, UK
| | - Richard Malik
- Centre for Veterinary Education, University of Sydney, Sydney, New South Wales, Australia.,School of Veterinary and Animal Science, Charles Sturt University, Wagga Wagga, New South Wales, Australia
| | - Mark Westman
- Sydney School of Veterinary Science, University of Sydney, Sydney, New South Wales, Australia
| | - Barbara Gandolfi
- Department of Veterinary Medicine and Surgery, College of Veterinary Medicine, University of Missouri, Columbia, Missouri, USA
| | - Sarah Spencer
- Comparative Biological Sciences, Royal Veterinary College, London, UK.,Bristol Veterinary School, University of Bristol, Bristol, UK
| | - Daniela Proverbio
- Department of Veterinary Medicine and Animal Sciences (DIVAS), University of Milan, Lodi, Italy
| | - Séverine Tasker
- Bristol Veterinary School, University of Bristol, Bristol, UK.,Linnaeus Veterinary, Shirley, UK
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2
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Silvestre-Ferreira A, Pastor J. Wild Felids Blood Group System. Animals (Basel) 2021; 11:3533. [PMID: 34944308 PMCID: PMC8698159 DOI: 10.3390/ani11123533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 12/03/2021] [Accepted: 12/07/2021] [Indexed: 11/16/2022] Open
Abstract
Wild felids and domestic cats share the AB blood group. However, there have been few studies regarding the characterization and prevalence of the different blood types in wild animals. The erythrocyte membrane glycolipids of the wild cats correspond to the major disialoganglioside patterns observed in domestic cats. Like in domestic cats, type A blood seems to be the most common, although wild felid species seem to exhibit one single blood type. Of the species studied, the wild domestic cats, and the Panthera and ocelot lineages, all had type A blood; the Puma lineage showed almost exclusively type B blood. The prevalence of wild felids blood types show that there seems to be variation between species, but not within species, and no evidence of geographical variation has yet been found, showing apparently no genetic variability. The presence of alloantibodies has also been demonstrated, so the risk of life-threatening transfusion reactions due to mismatched transfusions and neonatal isoerythrolysis is a possibility. Like in other species, the recognition of wild felids blood groups is clinically relevant, as it can also be important in establishing phylogenetic relationships within the Felidae family. We will review the current knowledge on this topic and give insights into the wild felids blood groups potential for zoo transfusion medicine and phylogenetic studies in order to help support reintroduction projects and to preserve genetic diversity.
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Affiliation(s)
- Ana Silvestre-Ferreira
- Department of Veterinary Sciences, University of Trás-os-Montes and Alto Douro (UTAD), Quinta de Prados, 5000-801 Vila Real, Portugal
- Animal and Veterinary Research Centre (CECAV), University of Trás-os-Montes and Alto Douro (UTAD), Quinta de Prados, 5000-801 Vila Real, Portugal
| | - Josep Pastor
- Department de Medicinia i Cirurgia Animals, Facultat de Veterinària, Universititat Autònoma de Barcelona, Bellaterra, 08193 Barcelona, Spain;
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3
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Feline Blood Groups: A Systematic Review of Phylogenetic and Geographical Origin. Animals (Basel) 2021; 11:ani11123339. [PMID: 34944117 PMCID: PMC8698024 DOI: 10.3390/ani11123339] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Revised: 11/18/2021] [Accepted: 11/21/2021] [Indexed: 11/24/2022] Open
Abstract
Simple Summary Numerous breeds have been identified in the domestic cat, grouped according to their phylogenetic or geographical origin. In the cat, the AB blood group system is the most important feline system, and the determination of the blood group by specific methods is an essential step to avoid or reduce the risk of an adverse reaction in the recipient patient. Many studies have been published on the distribution and prevalence of blood types in pedigree and non-pedigree cats, but the information has never been collated in a systematic manner. Abstract Domestic cats descended from the African wildcat several thousand years ago. Cats have spread to all parts of the world, probably along routes between civilizations or geographical boundaries, leading to the movement of species, from Asia to the African continent through the Mediterranean basin, and finally to the American continent, Australia, and New Zealand. Currently, 73 cat breeds are recognized by the International Cat Association. With the increasing interest in the selection of breeds, the determination of blood groups in cats has acquired importance over time. The AB blood group system is the most important blood system in cats, in which A, B, and AB or C blood groups are identified. This systematic review describes data from previously published reports about cat blood types and cat breeds. After applying specific criteria, 28 eligible studies were identified in which the prevalence percentages for each blood group in correlation with specific cat breeds were reported. The breeds were, in turn, divided into four groups according to their geographic and phylogenetic origins as follows: Asian cat breeds, American cat breeds, European cat breeds, and breeds from Oceania. Although numerous studies were carried out before 2021, gaps in the literature on the AB system and, in particular, the Mik group are highlighted.
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Sangkaew T, Pengpis S, Ritthikulprasert S. The frequency of feline AB blood types and the risk of incompatibility reactions in Bangkok, Thailand, and vicinities. Vet Clin Pathol 2021; 50:198-202. [PMID: 34031915 DOI: 10.1111/vcp.12957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 07/30/2020] [Accepted: 08/21/2020] [Indexed: 11/28/2022]
Abstract
BACKGROUND Mismatched blood transfusions and neonatal isoerythrolysis (NI) are life-threatening conditions in cats. The distribution of feline blood types, which varies geographically, can estimate the risks of mismatched transfusion reactions and NI due to random mating. OBJECTIVES The objectives were to determine the frequency of feline AB blood types in Bangkok, Thailand, and surrounding vicinities and calculate the risks of transfusion reactions and NI in domestic shorthair (DSH) cats. METHODS A standard tube method was performed to analyze the A/B antigen on erythrocytes. Reverse typing was performed to confirm blood types B and AB. RESULTS Domestic shorthair (n = 229) and purebred (n = 91) cats were prospectively recruited from 39 districts in Bangkok and 11 districts in four nearby provinces. Overall, 97.5% and 2.5% of the cats were type A and type B, respectively. No cats were type AB. All DSH cats were type A. Type B blood was found in 17.1% of Persian and 4% of Scottish Fold cats. Due to the blood type frequencies in DSH cats, the potential risk of major transfusion reactions, minor transfusion reactions, or NI was 0%. CONCLUSIONS This is a large study of feline blood types in Bangkok and vicinities. Type A blood was predominant in DSH cats and associated with a minimal risk for mismatched transfusion reactions and NI. Blood types A and B were found in Persian and Scottish Fold cats. Blood typing is mandatory for blood transfusion procedures and breeding purposes in cat populations.
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Affiliation(s)
- Teerawee Sangkaew
- Department of Veterinary Medicine, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
| | - Siwaporn Pengpis
- Chula Feline Center, Small Animal Teaching Hospital, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
| | - Sukullaya Ritthikulprasert
- Department of Veterinary Medicine, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand.,Chula Feline Center, Small Animal Teaching Hospital, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
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5
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Taylor S, Spada E, Callan MB, Korman R, Leister E, Steagall P, Lobetti R, Seth M, Tasker S. 2021 ISFM Consensus Guidelines on the Collection and Administration of Blood and Blood Products in Cats. J Feline Med Surg 2021; 23:410-432. [PMID: 33896248 PMCID: PMC10741281 DOI: 10.1177/1098612x211007071] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
PRACTICAL RELEVANCE Blood and blood products are increasingly available for practitioners to use in the management of haematological conditions, and can be lifesaving and therapeutically useful for patients with anaemia and/or coagulopathies. It is important for feline healthcare that donors are selected appropriately, and transfusions of blood or blood products are given to recipients that will benefit from them. Complications can occur, but can be largely avoided with careful donor management and recipient selection, understanding of blood type compatibility, and transfusion monitoring. CLINICAL CHALLENGES Feline blood transfusion, while potentially a lifesaving procedure, can also be detrimental to donor and recipient without precautions. Cats have naturally occurring alloantibodies to red cell antigens and severe reactions can occur with type-mismatched transfusions. Blood transfusions can also transmit infectious agents to the recipient, so donor testing is essential. Finally, donors must be in good health, and sedated as appropriate, with blood collected in a safe and sterile fashion to optimise the benefit to recipients. Transfusion reactions are possible and can be mild to severe in nature. Autologous blood transfusions and xenotransfusions may be considered in certain situations. EVIDENCE BASE These Guidelines have been created by a panel of authors convened by the International Society of Feline Medicine (ISFM), based on available literature. They are aimed at general practitioners to provide a practical guide to blood typing, cross-matching, and blood collection and administration.
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Affiliation(s)
| | - Eva Spada
- Veterinary Transfusion Research Laboratory
(REVLab), Department of Veterinary Medicine (DIMEVET), University of Milan,
Italy
| | - Mary Beth Callan
- Department of Clinical Sciences and Advanced
Medicine, School of Veterinary Medicine, University of Pennsylvania,
USA
| | - Rachel Korman
- Cat Specialist Services, Underwood, Queensland,
Australia
| | - Ellie Leister
- Pet Intensive Care Unit, Underwood, Queensland,
Australia
| | - Paulo Steagall
- Department of Clinical Sciences, Faculty of
Veterinary Medicine, Universite de Montréal, QC, Canada
| | - Remo Lobetti
- Bryanston Veterinary Hospital, Johannesburg,
South Africa
| | | | - Séverine Tasker
- Bristol Veterinary School, University of
Bristol, Langford, UK; and Linnaeus Group, Shirley, UK
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6
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Tommaso MD, Miglio A, Crisi PE, Boari A, Rocconi F, Antognoni MT, Luciani A. Frequency of Blood Types A, B and AB in a Population of Non-Pedigree Domestic Cats from Central Italy. Animals (Basel) 2020; 10:ani10101937. [PMID: 33096858 PMCID: PMC7589244 DOI: 10.3390/ani10101937] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 10/01/2020] [Accepted: 10/20/2020] [Indexed: 02/06/2023] Open
Abstract
Simple Summary This study aimed to evaluate the frequency of AB blood groups in non-pedigree domestic cats in Central Italy. The presence of natural alloantibodies in the feline blood group system can cause life-threatening transfusion reactions due to mismatched transfusion and, depending on the parents’ blood type, can also account for hemolytic reactions in newborn kittens. Based on the frequency of the AB blood groups found in the 483 cats studied, a potential risk (6.5%) of acute hemolytic transfusion or neonatal reactions was calculated. Therefore, determining the blood group in non-pedigree domestic cats from Central Italy before transfusion is strongly recommended, as has been reported for other geographical areas. Moreover, particular attention should be paid to the mating of non-purebred cats. Abstract Blood transfusion reactions and neonatal isoerythrolysis are common events in the feline population due to the presence of natural alloantibodies in the AB blood group system. It is known that the frequency of feline blood types varies according to the geographic region and breed. Therefore, the aims of this study were to investigate the frequency of AB blood groups in non-pedigree domestic cats in Central Italy and estimate the risk of a life-threatening transfusion reaction and neonatal isoerythrolysis, caused by mismatched transfusion or incompatible random mating, respectively. The AB blood group was determined on non-pedigree domestic feline patients and potential blood donors submitted at the Veterinary Teaching Hospitals of the Universities of Teramo (Abruzzo Region, Teramo, Italy) and Perugia (Umbria Region, Teramo, Italy), and visited at veterinary practitioners in Rome (Lazio Region, Teramo, Italy) using commercial immunochromatographic cartridges and commercial agglutination cards. There were four hundred and eighty-three cats included in the study. The frequencies of the blood types were: 89.9% type A, 7.0% type B, and 3.1% type AB. The probability of an acute hemolytic transfusion reaction or a neonatal isoerythrolysis was 6.5%. Although the frequency of type B in non-pedigree domestic cats living in Central Italy was relatively low, to reduce the risk of fatal transfusion reactions, blood group typing is recommended before each transfusion.
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Affiliation(s)
- Morena Di Tommaso
- Faculty of Veterinary Medicine, Veterinary University Hospital, University of Teramo, Piano d’Accio, 64100 Teramo, Italy; (P.E.C.); (A.B.); (F.R.); (A.L.)
- Correspondence: (M.D.T.); (A.M.)
| | - Arianna Miglio
- Department of Veterinary Medicine, University of Perugia, 06100 Perugia, Italy;
- Correspondence: (M.D.T.); (A.M.)
| | - Paolo Emidio Crisi
- Faculty of Veterinary Medicine, Veterinary University Hospital, University of Teramo, Piano d’Accio, 64100 Teramo, Italy; (P.E.C.); (A.B.); (F.R.); (A.L.)
| | - Andrea Boari
- Faculty of Veterinary Medicine, Veterinary University Hospital, University of Teramo, Piano d’Accio, 64100 Teramo, Italy; (P.E.C.); (A.B.); (F.R.); (A.L.)
| | - Francesca Rocconi
- Faculty of Veterinary Medicine, Veterinary University Hospital, University of Teramo, Piano d’Accio, 64100 Teramo, Italy; (P.E.C.); (A.B.); (F.R.); (A.L.)
| | | | - Alessia Luciani
- Faculty of Veterinary Medicine, Veterinary University Hospital, University of Teramo, Piano d’Accio, 64100 Teramo, Italy; (P.E.C.); (A.B.); (F.R.); (A.L.)
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7
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Spada E, Perego R, Baggiani L, Salatino E, Priolo V, Mangano C, Pennisi MG, Proverbio D. Prevalence of Blood Types and Alloantibodies of the AB Blood Group System in Non-Pedigree Cats from Northern (Lombardy) and Southern (Sicily) Italy. Animals (Basel) 2020; 10:ani10071129. [PMID: 32635140 PMCID: PMC7401586 DOI: 10.3390/ani10071129] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Revised: 06/29/2020] [Accepted: 06/30/2020] [Indexed: 12/03/2022] Open
Abstract
Simple Summary The most important blood group system in cats is the AB, in which cats are classified as type-A, B or AB. Cats have antibodies against the blood type they do not possess, called alloantibodies. The aims of this study were to update blood type prevalence in cats from Northern Italy and study for the first time the blood type in cats from an insular region of Southern Italy, Sicily; to detect alloantibodies in these feline populations; to compare results with previous studies performed in Italy and between regions in Northern and Southern Italy. Cats from Southern Italy had the highest prevalence of type-B and type-AB, and the lowest prevalence of type-A blood in Italy. In particular, type-AB prevalence was higher than all previous reports in non-pedigree cats in Europe and the Italian prevalence of anti-type-B alloantibodies in type-A cats was the lowest reported worldwide. These results highlight the usefulness of regional studies to report different prevalences in feline blood types. Compatibility tests such as blood typing and cross matching must be considered fundamental in cats of any origin to ensure safe and efficient blood transfusion and to prevent neonatal isoerythrolysis. Abstract The aims of this study were to determine the prevalence of A, B and AB blood types and alloantibodies in non-pedigree cats from two regions, one in Northern and one in Southern Italy (Lombardy and Sicily, respectively). A total of 448 samples (52.0% from Northern and 48.0% from Southern Italy) were blood typed. The prevalence of A, B and AB blood types in northern and southern cats were 91.0%, 5.2%, 3.8%, and 77.2%, 12.1% and 10.7%, respectively. The prevalence of type-A blood in southern cats was significantly lower (p = 0.0001) than in northern cats, while type-B and AB blood were significantly higher (p = 0.0085 and p = 0.0051, respectively) in Southern compared to Northern Italian cats. Alloantibodies against type-A blood were found in 94.1% of type-B cats, 11.2% of type-A cats had alloantibodies against type-B blood, while no type-AB cats had alloantibodies with no significant difference between the two Italian populations. Type-AB prevalence in non-pedigree cats in Southern Italy was the highest reported in Europe. Italian type-A cats had the lowest worldwide prevalence of alloantibodies against type-B blood. These results highlight the usefulness of regional studies to report different prevalences in feline blood types and reinforce the importance of blood typing cats before transfusions and mating.
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Affiliation(s)
- Eva Spada
- Veterinary Transfusion Research Laboratory (REVLab), Department of Veterinary Medicine (DIMEVET), University of Milan, 20133 Milan, Italy; (L.B.); (E.S.); (D.P.)
- Correspondence: (E.S.); (R.P.)
| | - Roberta Perego
- Veterinary Transfusion Research Laboratory (REVLab), Department of Veterinary Medicine (DIMEVET), University of Milan, 20133 Milan, Italy; (L.B.); (E.S.); (D.P.)
- Correspondence: (E.S.); (R.P.)
| | - Luciana Baggiani
- Veterinary Transfusion Research Laboratory (REVLab), Department of Veterinary Medicine (DIMEVET), University of Milan, 20133 Milan, Italy; (L.B.); (E.S.); (D.P.)
| | - Elisabetta Salatino
- Veterinary Transfusion Research Laboratory (REVLab), Department of Veterinary Medicine (DIMEVET), University of Milan, 20133 Milan, Italy; (L.B.); (E.S.); (D.P.)
| | - Vito Priolo
- Department of Veterinary Sciences, University of Messina, 98168 Messina, Italy; (V.P.); (C.M.); (M.G.P.)
| | - Cyndi Mangano
- Department of Veterinary Sciences, University of Messina, 98168 Messina, Italy; (V.P.); (C.M.); (M.G.P.)
| | - Maria Grazia Pennisi
- Department of Veterinary Sciences, University of Messina, 98168 Messina, Italy; (V.P.); (C.M.); (M.G.P.)
| | - Daniela Proverbio
- Veterinary Transfusion Research Laboratory (REVLab), Department of Veterinary Medicine (DIMEVET), University of Milan, 20133 Milan, Italy; (L.B.); (E.S.); (D.P.)
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8
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Martinez-Sogues L, Blois SL, Manzanilla EG, Abrams-Ogg AO, Cosentino P. Exploration of risk factors for non-survival and for transfusion-associated complications in cats receiving red cell transfusions: 450 cases (2009 to 2017). J Small Anim Pract 2020; 61:177-184. [PMID: 32115722 DOI: 10.1111/jsap.13108] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Revised: 11/20/2019] [Accepted: 12/15/2019] [Indexed: 12/20/2022]
Abstract
OBJECTIVES To describe red blood cell transfusion practices and short-term outcomes in anaemic cats. To determine clinical variables associated with non-survival and transfusion-related complications. MATERIAL AND METHODS In this retrospective study, blood bank records from the Ontario Veterinary College Health Science Centre (OVC-HSC) were reviewed to identify cats that received packed red blood cells or whole blood from 2009 to 2017. We extracted cause of anaemia, history of previous transfusion, pre- and post-transfusion packed cell volume, pre-transfusion compatibility testing, volume and dose of blood product, age of red blood cell unit, transfusion-associated complications and patient survival. RESULTS A total of 450 transfusion events were recorded in 267 cats. Blood loss was the most common indication for blood transfusion (44.9%), followed by ineffective erythropoiesis (37.5%) and red blood cell destruction (22.5%). Transfusion-associated complications occurred in 10.2% events and there was a 20.2% mortality after transfusion. Mean increase in packed cell volume 24-hours after transfusion was greater in cats undergoing major cross-match testing before transfusion (7.2%) versus those that did not (4.0%). Non-survival was associated with higher packed cell volume before transfusion, low patient body temperature before transfusion, anaemia due to blood loss and number of transfusions administered. Older age of transfused blood units was associated with non-survival and transfusion-related complications. CLINICAL IMPORTANCE This study was observational and so our analyses were exploratory, but suggest that major cross-match before transfusion tended to have greater transfusion efficacy and transfusion of older blood products might have detrimental effects on survival.
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Affiliation(s)
- L Martinez-Sogues
- Departament de Medicina i Cirurgia Animals, Facultat de Veterinària, Universitat Autònoma de Barcelona, Barcelona, Spain.,Hospital Clínic Veterinari (HCV), Universitat Autònoma de Barcelona, Barcelona, Spain
| | - S L Blois
- Department of Clinical Studies, Ontario Veterinary College, University of Guelph, Guelph, ON, Canada
| | - E G Manzanilla
- Teagasc Animal and Grassland Research and Innovation Centre, Mooreaprk, Cork, Ireland.,School of Veterinary Medicine, University College Dublin, Dublin, Ireland
| | - A O Abrams-Ogg
- Department of Clinical Studies, Ontario Veterinary College, University of Guelph, Guelph, ON, Canada
| | - P Cosentino
- Department of Clinical Studies, Ontario Veterinary College, University of Guelph, Guelph, ON, Canada
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9
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Kehl A, Mueller E, Giger U. CMAH genotyping survey for blood types A, B and C (AB) in purpose-bred cats. Anim Genet 2019; 50:303-306. [PMID: 30854707 DOI: 10.1111/age.12778] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/16/2019] [Indexed: 11/28/2022]
Abstract
In domestic cats, the AB blood group system consists of the three types A, B and C (also called AB). Mismatches can cause acute hemolytic transfusion reactions and hemolysis of the newborn (neonatal isoerythrolysis, NI). As blood types B and C are inherited recessively to A, breeders need to know the genotype to predict blood types in offspring and avoid NI. Several CMAH variants have been described as being associated with the b and ac alleles, and different genotyping schemes exist. Here, we genotyped 2145 cats with the original SNV panel, including SNVs c.142G>A and ∆-53, and our new scheme, with SNVs c.179G>T, c.268T>A and c.1322delT, to differentiate types A and B and added the SNV for the common ac (c.364C>T). Based upon the new scheme, all samples were assigned the correct genotype. No discordances appeared for the A allele, and new breed-specific SNVs (c.179G>T, c.1322delT) for the b allele were discovered. Furthermore, the genotypes A/ac (type A), ac /ac (C) and ac /b (C) could be detected. We found the variant c.179G>T in additional breeds: Ragdoll, Siberian, Scottish Fold, Chartreux, Neva Masquerade, British Shorthair and Highlander. Also, the variant c.364C>T was detected in additional breeds: Bengal, British Shorthair, Maine Coon, and Scottish Fold. We conclude that our new SNV panel is superior in genotyping cats than the original SNV panel and assures correct assignments of types A, B and C to assist veterinary clinicians and breeders to recognize, confirm and avoid blood incompatibilities such as acute hemolytic transfusion reactions and NI.
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Affiliation(s)
- A Kehl
- Laboklin, Steubenstraße 4, Bad Kissingen, D-97688, Germany
| | - E Mueller
- Laboklin, Steubenstraße 4, Bad Kissingen, D-97688, Germany
| | - U Giger
- Section of Medical Genetics (PennGen), Section of Medical Genetics (PennGen), School of Veterinary Medicine University of Pennsylvania, 3900 Delancey Street, Philadelphia, PA, 19104-6010, USA
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10
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Vieira SM, Ferreira RRF, de Matos AJ, Cardoso IM, Graça RMC, Soares AR, Blasi-Brugué C, Sánchez IM, Gopegui RR. Distribution of feline AB blood types: a review of frequencies and its implications in the Iberian Peninsula. JFMS Open Rep 2017; 3:2055116917727693. [PMID: 28975035 PMCID: PMC5613844 DOI: 10.1177/2055116917727693] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Objectives The objective of this study was to document the prevalence of feline blood types in the Iberian Peninsula and to determine the potential risk of incompatibility-related transfusion reactions in unmatched transfusions and the potential risk of neonatal isoerythrolysis (NI) in kittens born to parents of unknown blood type. Methods Blood samples were obtained from blood donors of the Animal Blood Bank (BSA-Banco de Sangue Animal). Blood typing was performed using a card method (RapidVet-H Feline Blood Typing; MDS). Results The studied population comprised 1070 purebred and non-purebred cats from Portugal and Spain aged between 1 and 8 years. Overall, frequencies of blood types A and B were 96.5% and 3.5%, respectively. No AB cats were found. Based on these data, the potential risks of NI and transfusion reactions in unmatched transfusions were calculated to be 6.8% and 2.8%, respectively. Conclusions and relevance Unlike previous studies, no type AB cats were found in this study. Although the calculated potential risks of transfusion reaction in unmatched transfusions and neonatal isoerythrolysis were low, blood typing prior to blood transfusion and blood typing of cats for breeding purposes are highly recommended.
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Affiliation(s)
| | - Rui R F Ferreira
- Animal Blood Bank, Porto, Portugal.,Multidisciplinary Unit for Biomedical Research, Porto, Portugal
| | - Augusto Jf de Matos
- Multidisciplinary Unit for Biomedical Research, Porto, Portugal.,Department of Veterinary Clinics, Institute for Biomedical Sciences of Abel Salazar, University of Porto, Portugal
| | | | | | | | - Carles Blasi-Brugué
- Animal Blood Bank, Barcelona, Spain.,Department of Animal Medicine and Surgery, Veterinary Faculty, Autonomous University of Barcelona, Spain
| | | | - Rafael R Gopegui
- Department of Animal Medicine and Surgery, Veterinary Faculty, Autonomous University of Barcelona, Spain
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Omi T, Nakazawa S, Udagawa C, Tada N, Ochiai K, Chong YH, Kato Y, Mitsui H, Gin A, Oda H, Azakami D, Tamura K, Sako T, Inagaki T, Sakamoto A, Tsutsui T, Bonkobara M, Tsuchida S, Ikemoto S. Molecular Characterization of the Cytidine Monophosphate-N-Acetylneuraminic Acid Hydroxylase (CMAH) Gene Associated with the Feline AB Blood Group System. PLoS One 2016; 11:e0165000. [PMID: 27755584 PMCID: PMC5068781 DOI: 10.1371/journal.pone.0165000] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2016] [Accepted: 10/04/2016] [Indexed: 11/30/2022] Open
Abstract
Cat’s AB blood group system (blood types A, B, and AB) is of major importance in feline transfusion medicine. Type A and type B antigens are Neu5Gc and Neu5Ac, respectively, and the enzyme CMAH participating in the synthesis of Neu5Gc from Neu5Ac is associated with this cat blood group system. Rare type AB erythrocytes express both Neu5Gc and Neu5Ac. Cat serum contains naturally occurring antibodies against antigens occurring in the other blood types. To understand the molecular genetic basis of this blood group system, we investigated the distribution of AB blood group antigens, CMAH gene structure, mutation, diplotypes, and haplotypes of the cat CMAH genes. Blood-typing revealed that 734 of the cats analyzed type A (95.1%), 38 cats were type B (4.9%), and none were type AB. A family of three Ragdoll cats including two type AB cats and one type A was also used in this study. CMAH sequence analyses showed that the CMAH protein was generated from two mRNA isoforms differing in exon 1. Analyses of the nucleotide sequences of the 16 exons including the coding region of CMAH examined in the 34 type B cats and in the family of type AB cats carried the CMAH variants, and revealed multiple novel diplotypes comprising several polymorphisms. Haplotype inference, which was focused on non-synonymous SNPs revealed that eight haplotypes carried one to four mutations in CMAH, and all cats with type B (n = 34) and AB (n = 2) blood carried two alleles derived from the mutated CMAH gene. These results suggested that double haploids selected from multiple recessive alleles in the cat CMAH loci were highly associated with the expression of the Neu5Ac on erythrocyte membrane in types B and AB of the feline AB blood group system.
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Affiliation(s)
- Toshinori Omi
- Department of Basic Science, School of Veterinary Nursing and Technology, Faculty of Veterinary Science, Nippon Veterinary and Life Science University, Tokyo, Japan
- * E-mail:
| | - Shota Nakazawa
- Department of Basic Science, School of Veterinary Nursing and Technology, Faculty of Veterinary Science, Nippon Veterinary and Life Science University, Tokyo, Japan
| | - Chihiro Udagawa
- Department of Basic Science, School of Veterinary Nursing and Technology, Faculty of Veterinary Science, Nippon Veterinary and Life Science University, Tokyo, Japan
| | - Naomi Tada
- International Institute of Small Animal Medicine (Bio Plus), AHB Inc., Tokyo, Japan
| | - Kazuhiko Ochiai
- Department of Basic Science, School of Veterinary Nursing and Technology, Faculty of Veterinary Science, Nippon Veterinary and Life Science University, Tokyo, Japan
| | - Yong Hwa Chong
- Department of Basic Science, School of Veterinary Nursing and Technology, Faculty of Veterinary Science, Nippon Veterinary and Life Science University, Tokyo, Japan
| | - Yuiko Kato
- Department of Basic Science, School of Veterinary Nursing and Technology, Faculty of Veterinary Science, Nippon Veterinary and Life Science University, Tokyo, Japan
| | - Hiroko Mitsui
- International Institute of Small Animal Medicine (Bio Plus), AHB Inc., Tokyo, Japan
| | - Azusa Gin
- Department of Veterinary Nursing, School of Veterinary Nursing and Technology, Faculty of Veterinary Science, Nippon Veterinary and Life Science University, Tokyo, Japan
| | - Hitomi Oda
- Department of Veterinary Nursing, School of Veterinary Nursing and Technology, Faculty of Veterinary Science, Nippon Veterinary and Life Science University, Tokyo, Japan
| | - Daigo Azakami
- Department of Veterinary Nursing, School of Veterinary Nursing and Technology, Faculty of Veterinary Science, Nippon Veterinary and Life Science University, Tokyo, Japan
| | - Kyoichi Tamura
- Department of Veterinary Clinical Pathology, School of Veterinary Medicine, Faculty of Veterinary Science, Nippon Veterinary and Life Science University, Tokyo, Japan
| | - Toshinori Sako
- Department of Veterinary Nursing, School of Veterinary Nursing and Technology, Faculty of Veterinary Science, Nippon Veterinary and Life Science University, Tokyo, Japan
| | - Takeshi Inagaki
- Department of Legal Medicine, Jichi Medical University, Tochigi, Japan
| | - Atsushi Sakamoto
- Department of Legal Medicine, Jichi Medical University, Tochigi, Japan
| | - Toshihiko Tsutsui
- International Institute of Small Animal Medicine (Bio Plus), AHB Inc., Tokyo, Japan
| | - Makoto Bonkobara
- Department of Veterinary Clinical Pathology, School of Veterinary Medicine, Faculty of Veterinary Science, Nippon Veterinary and Life Science University, Tokyo, Japan
| | - Shuichi Tsuchida
- Laboratory of Comparative Cellular Biology, School of Veterinary Medicine, School of Veterinary Medicine, Nippon Veterinary and Life Science University, Tokyo, Japan
| | - Shigenori Ikemoto
- School of Veterinary Medicine, Faculty of Veterinary Science, Nippon Veterinary and Life Science University, Tokyo, Japan
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Pinto ABT, Medeiros MÂDS, Jardim MPDB, Albernaz AP. FREQUÊNCIAS DOS TIPOS SANGUÍNEOS E TÍTULOS DOS ALOANTICORPOS EM FELINOS DOMÉSTICOS. CIÊNCIA ANIMAL BRASILEIRA 2016. [DOI: 10.1590/1089-6891v17i213453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Resumo A área da hemoterapia necessita de testes de compatibilidade sanguínea confiáveis, como a tipagem sanguínea, para se evitarem possíveis reações transfusionais, mas em felinos é também importante para se evitar a isoeritrólise neonatal. Transfusões sanguíneas realizadas entre felinos doadores e receptores que não possuem compatibilidade sanguínea podem refletir em reação transfusional aguda, particularmente severa quando o sangue tipo A é transfundido em um gato tipo B, pois geralmente este último possui altos níveis de aloanticorpos de ocorrência natural. Portanto, o conhecimento da frequência dos tipos sanguíneos da população de gatos de uma região pode auxiliar na determinação dos riscos de reações transfusionais e de ocorrência de isoeritrólise neonatal. Tais riscos podem ser prevenidos com a tipagem sanguínea em casos de transfusão. Foram coletadas 100 amostras sanguíneas de felinos para a realização da tipagem sanguínea com plasmas reagentes anti-A e anti-B conhecidas e titulações de aloanticorpos anti-A e anti-B dos plasmas armazenados. A distribuição das frequências dos grupos sanguíneos foi 96% de felinos com tipo sanguíneo A e 4% de felinos com tipo sanguíneo B, não sendo encontrado na amostra populacional de felino tipo AB. Há um grande risco de reação adversa através da transfusão sanguínea randomizada entre felinos não tipados previamente.
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Tasker S, Barker EN, Day MJ, Helps CR. Feline blood genotyping versus phenotyping, and detection of non-AB blood type incompatibilities in UK cats. J Small Anim Pract 2014; 55:185-9. [PMID: 24697343 DOI: 10.1111/jsap.12180] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/17/2012] [Indexed: 11/26/2022]
Abstract
OBJECTIVES The aim of this study was to determine the agreement between AB blood phenotyping and genotyping and determine whether non-AB blood type incompatibilities exist in UK cats. METHODS Blood samples underwent phenotyping (A, B or AB) using microplate agglutination, and genotyping (AA, Ab or bb) using pyrosequencing of a fragment of the cytidine monophospho-N-acetylneuraminic acid hydroxylase gene. Non-AB blood type incompatibilities were investigated by cross-matching against reference blood of the same phenotype. RESULTS Of 112 cats tested, 86 (77%) were blood phenotype A, 19 (17%) type B and 7 (6%) type AB. Genotype and initial phenotype agreed in 96% (107 of 112) of cats, but 5 were discordant; these were all B phenotype with either AA (n=2) or Ab (n=3) genotype. Two of the five cats had repeat blood samples tested: one was reclassified as phenotype A; the other remained phenotype B. Two cats had incompatibilities on minor cross-match, but these were attributed to phenotyping errors. CLINICAL SIGNIFICANCE Unknown mutation(s) associated with phenotype B, resulting in false AA or Ab genotyping, were evident in a small number of cases in this study. No conclusive evidence for non-AB blood type incompatibilities was found.
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Proverbio D, Spada E, Perego R, Della Pepa A, Bagnagatti De Giorgi G, Baggiani L. Assessment of blood types of Ragdoll cats for transfusion purposes. Vet Clin Pathol 2013; 42:157-62. [DOI: 10.1111/vcp.12048] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Daniela Proverbio
- Department of Health, Animal Science and Food Safety; Unit of Veterinary Transfusion Medicine; University of Milan; Milan; Italy
| | - Eva Spada
- Department of Health, Animal Science and Food Safety; Unit of Veterinary Transfusion Medicine; University of Milan; Milan; Italy
| | - Roberta Perego
- Department of Health, Animal Science and Food Safety; Unit of Veterinary Transfusion Medicine; University of Milan; Milan; Italy
| | - Alessandra Della Pepa
- Department of Health, Animal Science and Food Safety; Unit of Veterinary Transfusion Medicine; University of Milan; Milan; Italy
| | - Giada Bagnagatti De Giorgi
- Department of Health, Animal Science and Food Safety; Unit of Veterinary Transfusion Medicine; University of Milan; Milan; Italy
| | - Luciana Baggiani
- Department of Health, Animal Science and Food Safety; Unit of Veterinary Transfusion Medicine; University of Milan; Milan; Italy
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Zheng L, Zhong Y, Shi Z, Giger U. Frequencies of blood types A, B, and AB in non-pedigree domestic cats in Beijing. Vet Clin Pathol 2011; 40:513-517. [PMID: 22092346 DOI: 10.1111/j.1939-165x.2011.00371.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2010] [Revised: 03/06/2011] [Accepted: 04/01/2011] [Indexed: 11/29/2022]
Abstract
BACKGROUND Frequencies of blood types A, B, and AB in domestic cats vary geographically and among breeds and have not been reported in China. OBJECTIVE The purpose of this study was to survey the frequency of blood types in domestic cats in the Beijing area. METHODS A total of 262 cats from the city of Beijing were blood-typed using a standard tube agglutination assay. All cats were nonpedigree domestic shorthaired and longhaired cats; purebred cats were excluded. Serum obtained from type-B cats and a lectin (Triticum vulgaris) solution served as anti-A and anti-B reagents, respectively. The presence of alloantibodies was also determined in some cats. RESULTS The frequency of blood types was 88.2% type A, 11.4% type B, and 0.4% type AB. The tube assay resulted in 3+ to 4+ agglutination reactions with either the anti-A or anti-B reagents. The 1 type AB sample showed 3+ agglutination with both anti-A and anti-B reagents; the plasma of that sample did not react with either type-A or type-B RBCs. Tested type-B cats had strong anti-A antibodies. CONCLUSIONS The frequency of blood type B in the Beijing area was relatively high and similar to that reported for other Asian countries and Australia. Blood-typing is recommended to match donors and recipients before transfusion therapy and planned matings to avoid hemolytic transfusion and neonatal isoerythrolysis reactions, respectively, due to blood-type incompatibility.
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Affiliation(s)
- Lan Zheng
- Department of Clinical Sciences, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Yougang Zhong
- Department of Clinical Sciences, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Zhensheng Shi
- Department of Clinical Sciences, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Urs Giger
- Section of Medical Genetics, Department of Clinical Studies, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA, USA
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Juvet F, Brennan S, Mooney CT. Assessment of feline blood for transfusion purposes in the Dublin area of Ireland. Vet Rec 2011; 168:352. [PMID: 21498236 DOI: 10.1136/vr.c6879] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
The prevalence of A, B and AB blood types and of feline immunodeficiency virus (FIV) and feline leukaemia virus (FeLV) infection was determined in cats in Ireland, in order to determine risk factors for blood taken for transfusion purposes. EDTA blood samples were available from 137 non-pedigree cats and 39 pedigree cats (91 females and 85 males, aged four months to 15.0 years) in the Dublin area of Ireland. Of the 176 EDTA blood samples obtained, 112 (from 92 healthy cats and 20 sick cats) were tested for the presence of both FIV antibodies and FeLV antigens. Blood typing was performed using an immunochromatographic cartridge (CHROM; Alvedia). Testing for FIV and FeLV was performed by ELISA (SNAP FIV/FeLV Combo Test; Idexx Laboratories). Of the 39 pedigree cats, the majority (38 [97.4 per cent]) was type A, and only one (2.6 per cent) was type B. Of the 137 non-pedigree cats, the majority (116 [84.7 per cent]) was type A, 20 (14.6 per cent) were type B, and one (0.7 per cent) was type AB. Of the 92 healthy cats tested, the prevalence of FIV and FeLV positivity was 4.35 and 1.09 per cent, respectively. None of the 20 sick cats tested was FIV-positive; two (10 per cent) of the 20 sick cats were FeLV-positive.
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Affiliation(s)
- F Juvet
- University Veterinary Hospital, University College Dublin, Belfield, Dublin 4, Ireland.
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17
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Proverbio D, Spada E, Baggiani L, Perego R, Milici A, Ferro E. Comparison of gel column agglutination with monoclonal antibodies and card agglutination methods for assessing the feline AB group system and a frequency study of feline blood types in northern Italy. Vet Clin Pathol 2011; 40:32-9. [PMID: 21299585 DOI: 10.1111/j.1939-165x.2011.00286.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND A new commercial gel column agglutination system is reported to have high sensitivity in detecting cats with blood type AB. OBJECTIVES The aims of this study were to compare gel column agglutination and card agglutination methods for feline blood-typing and to determine the frequency distribution of feline blood types in northern Italy. METHODS Blood-typing was performed on 120 cats using both a commercial gel column containing monoclonal antibodies (ID Gel-Test Micro Typing System) and a card agglutination method (RapidVet-H Feline). Results were confirmed with back-typing. Sensitivity, specificity, positive predictive value, and negative predictive value were calculated for the 2 methods. A second group of 140 Domestic Shorthair (DSH) cats was blood-typed using the gel column technique to determine the frequency distribution of feline blood types in northern Italy. RESULTS The card agglutination method demonstrated poor sensitivity in identification of type-AB cats (61%) and was only 95% specific when identifying type-B cats. The gel column agglutination technique demonstrated 100% sensitivity and specificity for typing all 3 blood types (A, B, and AB). The frequency distribution study of 140 cats demonstrated that 127 (90.7%) cats were type A, 10 (7.1%) were type B, and 3 (2.1%) were type AB. CONCLUSION When blood-typing cats of breeds with a relatively high frequency of blood types B and AB, methods that use monoclonal antibodies for detection of blood types B and AB are recommended. Alternatively, blood type can be confirmed by more sensitive supplemental testing, such as back-typing. The high frequency of blood type A in DSH cats in northern Italy was comparable to previously reported frequencies in Italy and world-wide.
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Affiliation(s)
- Daniela Proverbio
- Department of Veterinary Clinical Science, Faculty of Veterinary Medicine, University of Milan, Milan, Italy.
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Abstract
PRACTICAL RELEVANCE blood transfusions are a potentially life-saving procedure that are within the reach of most small animal practitioners. Only minimal equipment is required. PATIENT GROUP any cat with clinical signs attributable to a reduced red blood cell mass that is affecting oxygen transport (as a result of reduced packed cell volume or acute blood loss) is a potential candidate for a transfusion. CLINICAL CHALLENGES although the principles of transfusion medicine are not complicated, there can be fatal consequences if certain steps are omitted. DIAGNOSTICS blood typing kits and blood filters are readily available from veterinary wholesalers, laboratories and blood banking services. EVIDENCE BASE over the past three decades, a substantial body of clinical research and reports has built up covering feline blood types and transfusion medicine. This article draws on that research to provide clinical guidance aimed at all veterinarians in feline or small animal practice who either currently practise transfusion medicine or plan to do so.
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Silvestre-Ferreira AC, Pastor J. Feline neonatal isoerythrolysis and the importance of feline blood types. Vet Med Int 2010; 2010:753726. [PMID: 20631821 PMCID: PMC2899707 DOI: 10.4061/2010/753726] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2009] [Revised: 12/21/2009] [Accepted: 03/14/2010] [Indexed: 11/22/2022] Open
Abstract
Although feline neonatal isoerythrolysis is rare, associated mortality rate is high. It results from mating of type B blood queens with type A or AB blood toms. A comprehensive review on feline blood types and feline neonatal isoerythrolysis physiopathology, clinical features, diagnosis, treatment, and prevention is covered.
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Affiliation(s)
- Ana C. Silvestre-Ferreira
- Department of Veterinary Sciences, Veterinary Hospital, University of Trás-os-Montes e Alto Douro, 5001-801 Vila Real, Portugal
| | - Josep Pastor
- Department of Animal Medicine and Surgery, Veterinary Faculty, Autonomous University of Barcelona, 08193 Bellaterra, Spain
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Abstract
Blood samples from 100 adult Bengal cats from the UK were submitted for assessment of blood type using RapidVet-H Feline blood typing cards (dms Laboratories), with further assessment by standard blood typing in a microtitre plate assay when card typing was inconclusive or revealed blood type B or AB. Ninety-eight cats were found to be type A when assessed using the blood typing cards. One cat initially tested as type AB but was found to be type A on testing a second blood sample using the blood typing cards. One cat initially tested as type B but was found to be type A when a second sample was tested by standard blood typing assay. Finding that 100% of the cats were blood type A is in contrast with previous studies that reported 10 Bengal cats to be type A, four to be type AB and one to be type B.
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Affiliation(s)
- Danièlle A Gunn-Moore
- Royal (Dick) School of Veterinary Studies, University of Edinburgh Hospital for Small Animals, Easter Bush Veterinary Centre, Scotland, United Kingdom.
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Barrs VR, Giger U, Wilson B, Chan CTT, Lingard AE, Tran L, Seng A, Canfield PJ, Beatty JA. Erythrocytic pyruvate kinase deficiency and AB blood types in Australian Abyssinian and Somali cats. Aust Vet J 2009; 87:39-44. [PMID: 19178476 DOI: 10.1111/j.1751-0813.2008.00381.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
OBJECTIVE To determine the frequency of the mutant pyruvate kinase (PK) allele, haematological parameters and AB blood types of Abyssinian and Somali cats in Australia. DESIGN Complete blood cell and reticulocyte counts, DNA PK mutation testing and blood typing were performed in all cats. RESULTS A total of 60 cats (36 Abyssinians, 24 Somalis) were included (37 females, 23 males). For the mutant PK allele, three female Somalis were homozygous (affected, 5%), 17 cats were heterozygous (carrier, 28%) and 40 cats tested negative (normal, 67%). Pedigree analysis revealed common ancestry of affected and many carrier cats. Of affected cats, two had regenerative anaemias and all had reticulocytosis (range 64-390 x 10(9)/L; P < 0.001 compared with normal or carrier cats). The only consistent historical sign was lethargy. One affected cat was euthanased 18 months after testing, because of anaemia, neutropenia, anorexia and weight loss. The mutant allele frequency was 0.19 overall (0.29 in Somalis, 0.13 in Abyssinians). All cats had blood type A. The commercial blood typing card method incorrectly identified 12 cats as having type AB blood. CONCLUSIONS The frequency of the mutant PK allele is high in Australia. Screening for PK deficiency is indicated before mating and in individual cats of these breeds, even in the absence of anaemia and especially when there is reticulocytosis. Although all cats in the present study had blood type A, blood type B is common in these breeds worldwide. Retyping of any AB typed cats by a laboratory technique is recommended.
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Affiliation(s)
- V R Barrs
- Valentine Charlton Cat Centre, Faculty of Veterinary Science, The University of Sydney, New South Wales 2006, Australia. v.barrs@.usyd.edu.au
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Tocci LJ, Ewing PJ. Increasing patient safety in veterinary transfusion medicine: an overview of pretransfusion testing. J Vet Emerg Crit Care (San Antonio) 2009; 19:66-73. [DOI: 10.1111/j.1476-4431.2009.00387.x] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Forcada Y, Guitian J, Gibson G. Frequencies of feline blood types at a referral hospital in the south east of England. J Small Anim Pract 2007; 48:570-3. [PMID: 17608664 DOI: 10.1111/j.1748-5827.2007.00325.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
OBJECTIVES To determine the prevalence of blood types in the feline patients and blood donors of the Queen Mother Hospital for Animals (The Royal Veterinary College, London, UK), that were typed between 2000 and 2004. METHODS A retrospective study was performed using files of patients and blood donors of the Queen Mother Hospital for Animals seen between January 2000 and November 2004. Commercial blood typing cards were used to determine the blood type. RESULTS One hundred and fifty-six cats were included in the study; 51 (32.7 per cent) were pedigree and 105 (67.3 per cent) non-pedigree. Of the 51 pedigree cats, the prevalence of blood types was as follows: type A, 42 (82.4 per cent); type B, seven (13.7 per cent) and type AB, two (3.9 per cent). Of the 105 non-pedigree cats, the prevalence of blood types was as follows: type A, 71 (67.6 per cent); type B 32 (30.5 per cent) and type AB two (1.9 per cent). CLINICAL SIGNIFICANCE The prevalence of type B blood in non-pedigree cats is higher than previously suggested and shows high variability within the UK; because of this, blood typing all feline patients, not only the ones of a breed typically known to have higher prevalence of type B blood before transfusion, is absolutely necessary to avoid a fatal transfusion reaction.
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Affiliation(s)
- Y Forcada
- Small Animal Teaching Hospital, The University of Liverpool, Leahurst, Chester High Road, Neston, Cheshire CH6 7TE, UK
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Cytidine monophospho-N-acetylneuraminic acid hydroxylase (CMAH) mutations associated with the domestic cat AB blood group. BMC Genet 2007; 8:27. [PMID: 17553163 PMCID: PMC1913925 DOI: 10.1186/1471-2156-8-27] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2007] [Accepted: 06/06/2007] [Indexed: 12/02/2022] Open
Abstract
Background The cat has one common blood group with two major serotypes, blood type A that is dominant to type B. A rare type AB may also be allelic and is suspected to be recessive to A and dominant to B. Cat blood type antigens are defined, N-glycolylneuraminic acid (NeuGc) is associated with type A and N-acetylneuraminic acid (NeuAc) with type B. The enzyme cytidine monophospho-N-acetylneuraminic acid hydroxylase (CMAH) determines the sugar bound to the red cell by converting NeuAc to NeuGc. Thus, mutations in CMAH may cause the A and B blood types. Results Genomic sequence of CMAH from eight cats and the cDNA of four cats representing all blood types were analyzed to identify causative mutations. DNA variants consistent with the blood types were genotyped in over 200 cats. Five SNPs and an indel formed haplotypes that were consistent with each blood type. Conclusion Mutations in type B cats likely disrupt the gene function of CMAH, leading to a predominance of NeuAc. Type AB concordant variants were not identified, however, cDNA species suggest an alternative allele that activates a downstream start site, leading to a CMAH protein that would be altered at the 5' region. The cat AB blood group system is proposed to be designated by three alleles, A > aab > b. The A and b CMAH alleles described herein can distinguish type A and type B cats without blood sample collections. CMAH represents the first blood group gene identified outside of non-human primates and humans.
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Arikan S, Gurkan M, Ozaytekin E, Dodurka T, Giger U. Frequencies of blood type A, B and AB in non-pedigree domestic cats in Turkey. J Small Anim Pract 2007; 47:10-3. [PMID: 16417604 DOI: 10.1111/j.1748-5827.2006.00005.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
OBJECTIVES To determine the distribution of blood types and to estimate the proportion of matings at risk for neonatal isoerythrolysis in non-pedigree domestic cats. METHODS The present survey determined the frequency of blood types in 301 cats from four distinct regions of Turkey. Ethylenediaminetetraacetic acid-anticoagulated blood samples were typed by simple tube and slide agglutination assays. Serum obtained from type B cats and an anti-B solution, prepared with Triticum vulgaris, were used to determine type A and type B blood, respectively. RESULTS Of the 301 cats typed, 220 had type A blood, 74 had type B and seven had type AB. There was a significant difference (P<0.01) between the locations of the cats, with fewer type B cats in the eastern than in the western parts of Turkey. Risk for the development of neonatal isoerythrolysis due to A-B mismatch was estimated to be 18.6 per cent. CLINICAL SIGNIFICANCE The overall type B frequency in Turkish domestic cats is high. Thus, untyped transfusions in these cats carry a high risk of life-threatening acute haemolytic transfusion reactions and neonatal isoerythrolysis. It is therefore strongly recommended that blood typing be performed before breeding or transfusing in order to minimise blood type incompatibility risks.
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Affiliation(s)
- S Arikan
- Department of Physiology, Faculty of Veterinary Medicine, Kirikkale University, Kirikkale, Turkey
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Weinstein NM, Blais MC, Harris K, Oakley DA, Aronson LR, Giger U. A Newly Recognized Blood Group in Domestic Shorthair Cats: TheMikRed Cell Antigen. J Vet Intern Med 2007. [DOI: 10.1111/j.1939-1676.2007.tb02962.x] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Weinstein NM, Blais MC, Harris K, Oakley DA, Aronson LR, Giger U. A newly recognized blood group in domestic shorthair cats: the Mik red cell antigen. J Vet Intern Med 2007; 21:287-92. [PMID: 17427390 PMCID: PMC3132507 DOI: 10.1892/0891-6640(2007)21[287:anrbgi]2.0.co;2] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND Naturally occurring alloantibodies produced against A and B red cell antigens in cats can cause acute hemolytic transfusion reactions. Blood incompatibilities, unrelated to the AB blood group system, have also been suspected after blood transfusions through routine crossmatch testing or as a result of hemolytic transfusion reactions. HYPOTHESIS Incompatible crossmatch results among AB compatible cats signify the presence of a naturally occurring alloantibody against a newly identified blood antigen in a group of previously never transfused blood donor cats. The associated alloantibody is clinically important based upon a hemolytic transfusion reaction after inadvertent transfusion of red cells expressing this red cell antigen in a feline renal transplant recipient that lacks this red cell antigen. METHODS Blood donor and nonblood donor cats were evaluated for the presence of auto- and alloantibodies using direct antiglobulin and crossmatch tests, respectively, and were blood typed for AB blood group status. Both standard tube and novel gel column techniques were used. RESULTS Plasma from 3 of 65 cats and 1 feline renal transplant recipient caused incompatible crossmatch test results with AB compatible erythrocytes indicating these cats formed an alloantibody against a red cell antigen they lack, termed Mik. The 3 donors and the renal transplant recipient were crossmatch-compatible with one another. Tube and gel column crossmatch test results were similar. CONCLUSIONS AND CLINICAL IMPORTANCE The absence of this novel Mik red cell antigen can be associated with naturally occurring anti-Mik alloantibodies and can elicit an acute hemolytic transfusion reaction after an AB-matched blood transfusion.
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Affiliation(s)
- Nicole M Weinstein
- Section of Medical Genetics, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA 19104-6010, USA
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Stieger K, Palos H, Giger U. Comparison of various blood-typing methods for the feline AB blood group system. Am J Vet Res 2005; 66:1393-9. [PMID: 16173483 DOI: 10.2460/ajvr.2005.66.1393] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To compare feline blood-typing results determined by use of the card (CARD), gel (GEL), tube (TUBE), University of Pennsylvania (Penn) tube, and Penn slide tests. SAMPLE POPULATION Blood samples from 38 healthy cats. PROCEDURES Blood samples, anticoagulated with EDTA, were screened by use of each blood-typing method according to manufacturers' protocols. RESULTS On the basis of the standard Penn tube and slide test results, 20, 11, and 7 cats were classified as type A positive, type B positive, and type AB positive, respectively. The same results were obtained with the anti-B and anti-B reagents of the TUBE test. Use of anti-A antibodies of original polyclonal and current monoclonal CARD tests resulted in mostly 2+ to 3+ (scale, 0 to 4+) agglutination reactions with blood samples from type A-positive cats; agglutination reactions with blood samples from type AB-positive cats were weak (1+). The anti-B lectin of the CARD test induced a 2+ to 4+ reaction with blood from all type B- and type AB-positive cats. Use of the GEL test allowed recognition of type A and type B blood samples; following addition of anti-A serum to control columns, type B blood was differentiated from type AB blood. CONCLUSIONS AND CLINICAL RELEVANCE Use of the in-practice CARD test allows identification of type A- and type B-positive cats, but weak reactions of type AB blood with the anti-A monoclonal antibody raise concerns. The modified GEL and TUBE tests appear to be reliable clinical laboratory methods for feline blood typing.
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Affiliation(s)
- Knut Stieger
- Section of Medical Genetics, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
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Gurkan M, Arikan S, Ozaytekin E, Dodurka T. Titres of alloantibodies against A and B blood types in non-pedigree domestic cats in Turkey: assessing the transfusion reaction risk. J Feline Med Surg 2005; 7:301-5. [PMID: 15914059 PMCID: PMC10822357 DOI: 10.1016/j.jfms.2005.03.003] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2005] [Accepted: 02/05/2005] [Indexed: 11/28/2022]
Abstract
The severity of a transfusion reaction depends on alloantibody titres within the recipients' blood. Determination of an agglutination titre of naturally occurring alloantibody may help to assess the risk of transfusion reactions following an unmatched transfusion in a cat population. In this group of 312 cats 227 had blood type A, 78 had blood type B, and seven had type AB blood. All type B cats tested showed gross evidence of agglutinating anti-A antibody with plasma titres ranging from 2 to 256. Among the 227 type A domestic cats tested for plasma anti-B alloantibody titres, 70% had gross agglutination with titres ranging from 2 to 16, while 17.6% had microscopic agglutination. The remaining 12.4% of the type A cats were negative for both gross and microscopic agglutination. Based on agglutinating titres, the relative risk of a transfusion reaction when type A or AB blood was given to a type B cat was 6.4% with acute severe reaction, acute mild reactions in 85.9% and premature red cell destruction in 7.7%. On the other hand, transfusion of type AB blood or type B blood to type A cats carries a potential risk of acute mild transfusion reaction in 4.4% and premature red cell destruction in 83.3%. Transfusion of type A or B blood to type AB cats results in no apparent clinical transfusion reactions.
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Affiliation(s)
- Mehmet Gurkan
- Department of Surgery, Faculty of Veterinary Medicine, Kirikkale University, Kirikkale, Turkey.
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31
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Malik R, Griffin DL, White JD, Rozmanec M, Tisdall PLC, Foster SF, Bell K, Nicholas FW. The prevalence of feline A/B blood types in the Sydney region. Aust Vet J 2005; 83:38-44. [PMID: 15971816 DOI: 10.1111/j.1751-0813.2005.tb12190.x] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
OBJECTIVE To determine the distribution of A/B blood types in pedigree and crossbred cats in the Sydney region, and to estimate the associated risk of administering incompatible blood in an unmatched random transfusion. DESIGN A prospective/retrospective study of blood specimens collected from both sick and healthy cats. MATERIALS AND METHODS Blood was collected from 355 cats from the Sydney region over a 12-year period from 1992 to 2003. Specimens were obtained from 187 domestic crossbred cats (short and long-haired) and 168 pedigree cats. The blood type of each cat was determined by one of three different laboratories using standard methods that varied over the duration of the survey. RESULTS The distributions of blood types obtained by the three laboratories were not significantly different. The prevalence of type-A, type-B and type-AB blood types in crossbred cats was 62%, 36% and 1.6%, respectively. This is the highest percentage of type-B cats so far reported for an outbred population of domestic cats, and is significantly higher than the 26% reported previously for cats in the Brisbane region. The calculated frequency for the type-B allele assuming Hardy-Weinberg equilibrium for this feline population is 0.60; the corresponding frequency of the type-A allele is thus approximately 0.40. The calculated proportion of random transfusions from this population giving rise to an incompatible blood transfusion is 46%, with half of these being life-threatening events. The calculated proportion of random matings from this population at risk for developing neonatal isoerythrolysis is 23%. The distribution of A and B blood types for pedigree cats was in general agreement with data reported previously for cats in North America and Europe, suggesting that the distribution of blood types in these purebred populations is relatively consistent throughout the world. CONCLUSIONS The prevalence of type B cats in the owned domestic and pedigree cat population is so high that blood typing or cross matching prior to transfusion should be mandatory, except in Siamese/Oriental cats.
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Affiliation(s)
- R Malik
- Post Graduate Foundation in Veterinary Science, Conference Centre, Building B22, The University of Sydney, New South Wales
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Silvestre-Ferreira AC, Pastor J, Almeida O, Montoya A. Frequencies of feline blood types in northern Portugal. Vet Clin Pathol 2004; 33:240-3. [PMID: 15570562 DOI: 10.1111/j.1939-165x.2004.tb00380.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
The frequencies of feline blood types in northern Portugal were studied by surveying 185 pedigreed and nonpedigreed cats. Blood typing was performed by the traditional tube method. As a single group, the majority of cats were type A (90.3%), 3.8% were type B, and 5.9% were type AB. Among pedigreed cats, 19 were Siamese and 7 were Persian; all but 1 were type A. Among nonpedigreed cats, 89.3% were type A, 4.4% were type B, and 6.3% were type AB.
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Affiliation(s)
- Ana C Silvestre-Ferreira
- Department of Veterinary Sciences, University of Trás-os-Montes e Alto Douro, Vila Real, Portugal
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Ruiz de Gopegui R, Velasquez M, Espada Y. Survey of feline blood types in the Barcelona area of Spain. Vet Rec 2004; 154:794-5. [PMID: 15233460 DOI: 10.1136/vr.154.25.794] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Affiliation(s)
- R Ruiz de Gopegui
- Department of Animal Medicine and Surgery, Facultad de Veterinaria, Universidad Autònoma de Barcelona, 08193 Bellaterra, Barcelona, Spain
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Arikan S, Duru SY, Gurkan M, Agaoglu ZT, Giger U. Blood type A and B frequencies in Turkish Van and Angora cats in Turkey. JOURNAL OF VETERINARY MEDICINE. A, PHYSIOLOGY, PATHOLOGY, CLINICAL MEDICINE 2003; 50:303-6. [PMID: 12887623 DOI: 10.1046/j.1439-0442.2003.00536.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Blood typing of domestic cats has been performed in domestic and purebred cats in various parts of the world and is important in clinical practice in order to prevent neonatal isoerythrolysis (NI) and acute haemolytic transfusion reactions. Prevalence of blood types vary greatly between breeds of cats. Turkish Van and Angora cats are different breeds that originated in geographically distinct regions of Turkey. The present survey determined the frequency of blood types in these Turkish pedigreed cats in Turkey. Ethylenediaminetetraacetic-acid anti-coagulated blood of a total of 113 Turkish Van and Angora cats were examined for blood typing using a slide and tube agglutination assay. Of the 85 Van cats surveyed, 40% had type A, and 60% had type B blood. Of the 28 Turkish Angora cats, 53.6% had type A, and 46.4% had type B blood. No type AB cats were found between both breeds. There was no significant association between blood types and gender of both Angora and Van cats or eye colours of Van cats (P > 0.05). Although these are limited surveys, the overall prevalence of type B cats in these two breeds was very high compared with the results of previous studies worldwide. It appears likely that blood type incompatibilities responsible for feline NI and transfusion reactions are occurring in these breeds. The risk of transfusion incompatibility in Turkish Angora and Van cats was 46.4 and 60%, respectively. It is therefore strongly recommended to breeders and clinicians that blood typing be performed prior to breeding and transfusing cats.
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Affiliation(s)
- S Arikan
- Department of Physiology, Faculty of Veterinary Medicine, Kirikkale University, Kirikkale, Turkey.
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Knottenbelt CM. The feline AB blood group system and its importance in transfusion medicine. J Feline Med Surg 2002; 4:69-76. [PMID: 12027505 PMCID: PMC10822655 DOI: 10.1053/jfms.2001.0162] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/16/2001] [Indexed: 11/11/2022]
Affiliation(s)
- C M Knottenbelt
- Department of Veterinary Clinical Studies, University of Glasgow Veterinary School, Bearsden, UK
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Mylonakis ME, Koutinas AF, Saridomichelakis M, Leontidis L, Papadogiannakis M, Plevraki K. Determination of the prevalence of blood types in the non-pedigree feline population in Greece. Vet Rec 2001; 149:213-4. [PMID: 11548962 DOI: 10.1136/vr.149.7.213] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Affiliation(s)
- M E Mylonakis
- Clinic of Companion Animal Medicine, Faculty of Veterinary Medicine, Aristotle University of Thessaloniki, Greece
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Knottenbelt CM, Day MJ, Cripps PJ, Mackin AJ. Measurement of titres of naturally occurring alloantibodies against feline blood group antigens in the UK. J Small Anim Pract 1999; 40:365-70. [PMID: 10476523 DOI: 10.1111/j.1748-5827.1999.tb03101.x] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Measurement of anti-A and anti-B haemagglutinating alloantibody titres was performed on serum samples from both pedigree (n = 61) and non-pedigree (n = 43) cats previously typed using a commercial blood typing kit. All 40 type B cats had anti-A antibody with titres ranging from 4 to 1600. Among the 61 type A sera tested, an anti-B agglutination titre of greater than 2 was recorded in 16.4 per cent. There was no significant association between serum alloantibody titre and cat breed or gender (P > 0.05).
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Affiliation(s)
- C M Knottenbelt
- Royal (Dick) School of Veterinary Studies, University of Edinburgh, Summerhall
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