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Wennerås C, Aranburu A, Wass L, Grankvist A, Staffas A, Soboli A, Mårtensson IL, Fogelstrand L, Lewerin C. Infection with Neoehrlichia mikurensis promotes the development of malignant B-cell lymphomas. Br J Haematol 2023; 201:480-488. [PMID: 36650117 DOI: 10.1111/bjh.18652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Revised: 12/19/2022] [Accepted: 01/04/2023] [Indexed: 01/19/2023]
Abstract
The tick-borne pathogen Neoehrlichia (N.) mikurensis is implicated in persistent infection of the vascular endothelium. B cells are crucial for the host defence to this infection. Chronic stimulation of B cells may result in B-cell transformation and lymphoma. Five patients with malignant B-cell lymphoma and concomitant N. mikurensis infection were investigated regarding clinical picture, lymphoma subtype, B-cell lymphoma immunophenotype and IGHV (variable region of the immunoglobulin heavy) gene repertoire. Three of the five patients improved markedly and ceased lymphoma treatment after doxycycline treatment to eliminate N. mikurensis. Sequencing the B-cell lymphoma IGHV genes revealed preferred usage of the IGHV1 (IGHV1-2, and -69) and IGHV3 (IGHV3-15, -21, -23) families. In conclusion, N. mikurensis infection may drive the development of malignant B-cell lymphomas. Eradication of the pathogen appears to induce remission with apparent curing of the lymphoma in some cases.
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Affiliation(s)
- Christine Wennerås
- Institute of Biomedicine, Department of Infectious Diseases, The Sahlgrenska Academy, University of Gothenburg, Göteborg, Sweden
- Department of Clinical Microbiology, Sahlgrenska University Hospital, Göteborg, Sweden
| | - Alaitz Aranburu
- Department of Rheumatology and Inflammation, The Sahlgrenska Academy, Institute of Medicine, University of Gothenburg, Göteborg, Sweden
| | - Linda Wass
- Institute of Biomedicine, Department of Infectious Diseases, The Sahlgrenska Academy, University of Gothenburg, Göteborg, Sweden
- Department of Clinical Microbiology, Sahlgrenska University Hospital, Göteborg, Sweden
| | - Anna Grankvist
- Department of Clinical Microbiology, Sahlgrenska University Hospital, Göteborg, Sweden
| | - Anna Staffas
- Department of Clinical Genetics and Genomics, Sahlgrenska University Hospital, Göteborg, Sweden
| | - Anastasia Soboli
- Department of Clinical Chemistry, Sahlgrenska University Hospital, Göteborg, Sweden
| | - Inga-Lill Mårtensson
- Department of Rheumatology and Inflammation, The Sahlgrenska Academy, Institute of Medicine, University of Gothenburg, Göteborg, Sweden
| | - Linda Fogelstrand
- Department of Clinical Genetics and Genomics, Sahlgrenska University Hospital, Göteborg, Sweden
- Department of Clinical Chemistry, Sahlgrenska University Hospital, Göteborg, Sweden
| | - Catharina Lewerin
- Department of Hematology and Coagulation, Sahlgrenska University Hospital, Göteborg, Sweden
- Department of Internal Medicine and Clinical Nutrition, The Sahlgrenska Academy, Institute of Medicine, University of Gothenburg, Göteborg, Sweden
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Low VL, Prakash BK, Lim YAL, Tan TK, Vinnie-Siow WY, Sofian-Azirun M, AbuBakar S. Detection of Anaplasmataceae agents and co-infection with other tick-borne protozoa in dogs and Rhipicephalus sanguineus sensu lato ticks. Exp Appl Acarol 2018; 75:429-435. [PMID: 30073430 DOI: 10.1007/s10493-018-0280-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Accepted: 07/31/2018] [Indexed: 06/08/2023]
Abstract
Anaplasmosis and ehrlichiosis are of serious health concern worldwide for animals and humans. In the present study, we report the occurrence of Anaplasma platys and Ehrlichia canis in dogs and Rhipicephalus sanguineus sensu lato (s.l.) ticks from Peninsular Malaysia using a nested polymerase chain reaction assay based on amplification of the 16S rRNA gene. Anaplasma platys was detected from dogs and ticks with prevalence rates of 3.3% (8/240) and 2.9% (4/140), respectively. On the other hand, 12.9% (31/240) of the dogs and 0.7% (1/140) of the ticks were tested positive for E. canis. Additionally, co-infections of A. platys and E. canis with Babesia or Hepatozoon protozoa were also noted in this study. Double infection (E. canis + B. gibsoni) was observed in tick, whereas triple infections (E. canis + A. platys + B. vogeli and E. canis + A. platys + H. canis) were found in dogs. This study represents the first evidence of A. platys DNA in R. sanguineus s.l. in Malaysia.
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Affiliation(s)
- Van Lun Low
- Tropical Infectious Diseases Research and Education Centre (TIDREC), University of Malaya, Kuala Lumpur, Malaysia.
| | - Batah Kunalan Prakash
- Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia
| | - Yvonne Ai-Lian Lim
- Department of Parasitology, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
- Centre of Excellence for Research in AIDS (CERIA), University of Malaya, Kuala Lumpur, Malaysia
| | - Tiong Kai Tan
- Department of Parasitology, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Wei Yin Vinnie-Siow
- Department of Parasitology, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Mohd Sofian-Azirun
- Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia
| | - Sazaly AbuBakar
- Tropical Infectious Diseases Research and Education Centre (TIDREC), University of Malaya, Kuala Lumpur, Malaysia
- Department of Medical Microbiology, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
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Frivik JO, Noraas S, Grankvist A, Wennerås C, Quarsten H. A man in his sixties from Southern Norway with intermittent fever. Tidsskr Nor Laegeforen 2017; 137:17-0353. [PMID: 29231658 DOI: 10.4045/tidsskr.17.0353] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022] Open
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Dadgar A, Grankvist A, Wernbro L, Wennerås C. [Fever of unknown origin in a multiple sclerosis patient on immunomodulatory therapy was due to neoehrlichiosis]. Lakartidningen 2017; 114:EM6L. [PMID: 28926079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Fever of unknown origin in a multiple sclerosis patient on immunomodulatory therapy was due to neoehrlichiosis The emerging tick-borne bacterium Candidatus Neoehrlichia mikurensis is the etiologic agent of neoehrlichiosis, a febrile illness that may be accompanied by vascular complications. Severe cases of neoehrlichiosis have been described in patients with hematologic malignancies and systemic rheumatic diseases. We present the first case of neoehrlichiosis in a patient with multiple sclerosis undergoing rituximab therapy.
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Affiliation(s)
- Arya Dadgar
- Norra Alvsborgs lanssjukhus - Trollhattan, Sweden Norra Alvsborgs lanssjukhus - Trollhattan, Sweden
| | - Anna Grankvist
- Sahlgrenska universitetssjukhuset - Klinisk mikrobiologi Goteborg, Sweden Sahlgrenska universitetssjukhuset - Klinisk mikrobiologi Goteborg, Sweden
| | - Lennart Wernbro
- Norra Alvsborgs lanssjukhus - Infektionskliniken Trollhattan, Sweden Norra Alvsborgs lanssjukhus - Infektionskliniken Trollhattan, Sweden
| | - Christine Wennerås
- Sahlgrenska universitetssjukhuset - Klinisk mikrobiologi Göteborg, Sweden Sahlgrenska universitetssjukhuset - Klinisk mikrobiologi Göteborg, Sweden
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George JW, Rideout BA, Griffey SM, Pedersen NC. Effect of preexisting FeLV infection or FeLV and feline immunodeficiency virus coinfection on pathogenicity of the small variant of Haemobartonella felis in cats. Am J Vet Res 2002; 63:1172-8. [PMID: 12171173 DOI: 10.2460/ajvr.2002.63.1172] [Citation(s) in RCA: 74] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To investigate the effects of preexisting FeLV infection or FeLV and feline immunodeficiency (FIV) coinfection on the pathogenicity of the small variant of Haemobartonella felis (Hfsm, California variant) in cats. ANIMALS 20 FeLV infected, 5 FeLV-FIV coinfected, and 19 retrovirus-free cats. PROCEDURES A client-owned cat, coinfected with FeLV and Hfsm, was the source for Hfsm. Inoculum 1 (FeLV free) was obtained by passage of source Hfsm through 4 FeLV-resistant cats. Inoculum 2 was obtained by further passage of Hfsm (inoculum 1) through 2 specific pathogen-free cats. RESULTS A mild-to-moderate anemia started 21 days after inoculation, with its nadir occurring at 35 to 42 days after inoculation. Infection with Hfsm induced greater decrease in hemoglobin concentration in FeLV infected cats, compared with retrovirus free cats. Reticulocytosis, macrocytosis, and polychromasia of erythrocytes developed in anemic cats regardless of retrovirus infection status. Mean neutrophil counts decreased during the hemolytic episode. For most cats, the anemia was transient. Four FeLV infected cats, 1 of which was also FIV infected, developed fatal FeLV-associated myeloproliferative diseases. Of the surviving cats, 8 died over the next 24 months from other FeLV-related diseases. Hemolysis did not recur after the initial episode. Inoculum 1 induced more severe anemia than inoculum 2. CONCLUSIONS AND CLINICAL RELEVANCE Our results support the clinical observation that cats coinfected with FeLV and H felis develop more severe anemia than cats infected with H felis alone. Infection with Hfsm may induce myeloproliferative disease in FeLV infected cats. The small variant of H felis may lose pathogenicity by passage through FeLV-free cats.
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Affiliation(s)
- Jeanne W George
- Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis 95616, USA
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Harrus S, Klement E, Aroch I, Stein T, Bark H, Lavy E, Mazaki-Tovi M, Baneth G. Retrospective study of 46 cases of feline haemobartonellosis in Israel and their relationships with FeLV and FIV infections. Vet Rec 2002; 151:82-5. [PMID: 12164225 DOI: 10.1136/vr.151.3.82] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Forty-six cats with clinical haemobartonellosis were studied; 75 per cent of the cats of known age were two-and-a-half years old or younger, 50 per cent were intact males and 19.5 per cent were castrated males. The predominant signs of the disease were tachypnoea, lethargy, depression, anorexia, infestation with fleas, pale mucous membranes, icterus, emaciation, dehydration, splenomegaly, anaemia, leucocytosis, increased activities of alanine aminotransferase and aspartate aminotransferase, and azotaemia. Thirty-eight per cent of the cats that were tested for feline leukaemia virus (FeLV) antigen were positive, and 22 per cent of those tested for feline immunodeficiency virus (FIV) antibodies were positive. The prevalence of both FeLV and FIV was much higher than in the general Israeli cat population. The cats infected with both Haemobartonella felis and FeLV had a significantly lower body temperature, were more anaemic and the mean cell volume of their erythrocytes was greater than in the cats with haemobartonellosis alone.
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Affiliation(s)
- S Harrus
- School of Veterinary Medicine, The Hebrew University of Jerusalem, Rehovot, Israel
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Abstract
Fifty-six cats with naturally occurring Babesia felis infection were studied. No breed or sex predilection could be identified, but there was an apparent predilection for young adult cats less than 3 years of age. Macrocytic, hypochromic, regenerative anaemia was present in 57% of the cats and in-saline agglutination tests were positive in 16%. No characteristic changes were observed in total or differential leukocyte counts. Thrombocyte counts were variable and thrombocytopaenia was an inconsistent finding. Hepatic cytosol enzyme activity and total bilirubin concentrations were elevated in the majority of cats. Serum protein values were mostly normal, but increased values were occasionally observed and polyclonal gammopathies were observed in all cats with increased total globulin concentrations. No remarkable changes in renal parameters were observed. A variety of electrolyte abnormalities occurred in a number of cats, but no consistent pattern of change could be identified. A close correlation was evident between peripheral and central parasite counts. Concurrent infections with Haemobartonella felis, feline immunodeficiency virus and/or feline leukemia virus were identified in a number of cats.
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Affiliation(s)
- T Schoeman
- Department of Companion Animal Medicine, Faculty of Veterinary Science, University of Pretoria, Onderstepoort, South Africa
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Contamin H, Michel JC. Haemobartonellosis in squirrel monkeys (Saimiri sciureus): antagonism between Haemobartonella sp. and experimental Plasmodium falciparum malaria. Exp Parasitol 1999; 91:297-305. [PMID: 10092473 DOI: 10.1006/expr.1998.4337] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A hemotropic parasite of the genus Haemo bartonella (rickettsial parasite of the Family Anaplasmataceae) is responsible for latent asymptomatic infection in colony-born Saimiri monkeys. Indeed, many of these animals develop a patent Haemobartonella infection following splenectomy. Such patent parasitism is characterized by an intense Haemobartonella parasitemia which peaks between days 12 and 14 after removal of the spleen and then decreases to become undetectable between days 25 and 30. During the resolving phase of parasitemia, a moderate anemia associated with monocytosis and erythrophagocytosis is observed. In certain Saimiri monkeys, Haemobartonella parasitemia remains latent following removal of the spleen. This indicates that the spleen plays a role but is not necessary to maintain latent Haemobartonella parasitism. It also suggests the existence of heterogeneity in the host immune reactivity to the parasite. Latent or patent haemobartonellosis might raise a problem when Saimiri monkeys are used as experimental hosts of Plasmodium falciparum asexual blood stages, as already noticed with "rodent malaria." Thus we investigated the relationship between Haemobartonella and P. falci parum in splenectomized monkeys. When animals harboring latent Haemobartonella sp. were infected with P. falciparum, the former remained latent and exerted no influence on the course of the P. falciparum parasitemia. In constrast, when P. falciparum was initiated in animals which were in the process of developing patent haemobarto nellosis, the course of the former was protracted and either the animal resisted longer, or it self-cleared the P. falciparum infection. Conversely, patent haemobartonellosis was delayed when splenectomy was performed at different times after initiation of P. falciparum infection in intact monkeys. Our results do not allow us to draw conclusions as to the mechanism(s) of the antagonism between the two parasites, but they emphasize the need to monitor the presence of Haemobartonella when splenectomized Saimiri monkeys are used as experimentals hosts for P. falciparum parasitism.
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Affiliation(s)
- H Contamin
- Unité de Primatologie et Laboratoire d' Immunologie Parasitaire, Institut Pasteur de la Guyane Française, 97306 Cayenne Cedex, France
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Reubel GH, Dean GA, George JW, Barlough JE, Pedersen NC. Effects of incidental infections and immune activation on disease progression in experimentally feline immunodeficiency virus-infected cats. J Acquir Immune Defic Syndr (1988) 1994; 7:1003-15. [PMID: 7916048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Specific pathogen-free cats were experimentally infected with feline immunodeficiency virus (FIV) and subsequently exposed to common infectious pathogens and immune stimuli over a 3-year period. Cats with preexisting FIV infection showed signs of disease after exposure to Haemobartonella felis, Toxoplasma gondii, feline herpesvirus-1, and feline calicivirus similar to signs in non-FIV-infected cats, although they were more severe. No adverse effects of immunization with inactivated rabies virus vaccine and a synthetic polyproline immunogen were observed in either FIV-infected or non-FIV-infected cats, whereas the application of a diphtheria-tetanus-pertussis vaccine caused transient fever and lymphadenopathy in both groups of animals. Primary immune responses to pathogens or immunogens were usually delayed or diminished in FIV-infected compared with non-FIV-infected cats. Repeated infections and immune activation had no significant effects on the levels of FIV-specific antibodies or on the proportion of peripheral blood mononuclear cells (PBMCs) containing FIV proviral DNA. However, FIV-infected cats that were not exposed to immune stimuli had lower CD4+ T-lymphocyte numbers and lower CD4+/CD8+ T lymphocyte ratios at the end of the 3-year study than FIV-infected cats exposed to cofactors. The latter also had normal levels of interleukin-3 receptor (IL-2R) and major histocompatibility class II (MHC-II) antigen expression on PBMCs, while FIV-infected cats not exposed to cofactors had up-regulated IL-2R and down-regulated MHC-II antigen expression. It was concluded that repeated immune stimulation did not have a deleterious effect on the course of FIV-induced immunodeficiency.
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Affiliation(s)
- G H Reubel
- Department of Medicine, School of Veterinary Medicine, University of California, Davis
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Duarte MI, Oliveira MS, Shikanai-Yasuda MA, Mariano ON, Takakura CF, Pagliari C, Corbett CE. Haemobartonella-like microorganism infection in AIDS patients: ultrastructural pathology. J Infect Dis 1992; 165:976-7. [PMID: 1569354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
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Zulty JC, Kociba GJ. Cold agglutinins in cats with haemobartonellosis. J Am Vet Med Assoc 1990; 196:907-10. [PMID: 2138144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Coombs-positive anemia developed in cats inoculated with Haemobartonella felis. Cold agglutinins were detected in serum during the acute stage of the disease when anemia was present. The cold agglutinating activity was associated with IgM, was demonstrated at 4 C, and was abolished by treatment of sera with 2-mercaptoethanol. At 4 C, the sera from infected cats agglutinated or lysed parasitized autologous erythrocytes or normal erythrocytes pretreated with neuraminidase. These data indicate that cold agglutinins are associated with haemobartonellosis and suggest that immunologic responses to erythrocytic antigens have a role in the anemia.
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Affiliation(s)
- J C Zulty
- Department of Veterinary Pathobiology, College of Veterinary Medicine, Ohio State University, Columbus 43210-1093
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Collett MG, Doyle AS, Reyers F, Kruse T, Fabian B. Fatal disseminated cryptococcosis and concurrent ehrlichiosis in a dog. J S Afr Vet Assoc 1987; 58:197-202. [PMID: 3508465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Laboratory findings in an adult bull terrier presented with a history of anorexia and weight loss included the following: severe anaemia, leukocytosis, neutrophilia, lymphopaenia, thrombocytopaenia, Ehrlichia canis morulae in monocytes, hypergammaglo-bulinaemia, a bleeding tendency, icterus and proteinuria. In addition, a high Haemobartonella canis parasitaemia, non-encapsulated yeasts on urinalysis and a localised Demodex canis infestation were present. Treatment for ehrlichiosis was initiated but the dog died. Lesions found were a severe cryptococcal granulomatous pneumonia and cryptococcal colonies in the lungs, bronchial lymph nodes, kidneys, liver, spleen, heart, meninges, eyes and thoracic cavity. In addition, hyphal forms resembling Filobasidiella neoformans, the teleomorph of Cryptococcus neoformans, were seen in lung fine needle aspiration smears, impression smears and lung sections. C. neoformans was cultured from urine, lung and liver. Lung and kidney also yielded Salmonella typhimureum. Cortical atrophy with T-cell depletion of lymph nodes as well as splenic lymphoid follicular atrophy, typical of chronic ehrlichiosis-induced cell mediated immunosuppression, could have predisposed to the fatal disseminated cryptococcis.
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Affiliation(s)
- M G Collett
- Department of Pathology, Faculty of Veterinary Science, University of Pretoria, Onderstepoort, Republic of South Africa
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Huchzermeyer FW, Cilliers JA, Diaz Lavigne CD, Bartkowiak RA. Broiler pulmonary hypertension syndrome. I. Increased right ventricular mass in broilers experimentally infected with Aegyptianella pullorum. Onderstepoort J Vet Res 1987; 54:113-4. [PMID: 2957638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Infection with the obligatory intra-erythrocytic anaplasma-like rickettsia Aegyptianella pullorum in 4-week-old broilers at a moderate altitude of 1,200 m produced a significant increase in the mean relative right ventricular (RV) mass (RV: TV) from 0.23 in the controls to 0.31 in the infected group. This was accompanied by an increase in the number of birds suffering from severe RV hypertrophy from 14.3% in the controls to 50% in the infected group. Pulmonary hypertension and subsequent RV hypertrophy could have been caused by the severe anaemia experienced in the course of the infection or by metabolic or biochemical action of A. pullorum. As the agent does not occur on commercial broiler farms, it cannot play a practical role in the broiler ascites syndrome.
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Adams MR, Lewis JC, Bullock BC. Hemobartonellosis in squirrel monkeys (Saimiri sciureus) in a domestic breeding colony: case report and preliminary study. Lab Anim Sci 1984; 34:82-5. [PMID: 6716965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Infection with Hemobartonella sp was diagnosed in a colony-born squirrel monkey with normocytic, normochromic anemia and pronounced punctate erythrocytic basophilic stippling on Wright's-Giemsa stained blood films. The diagnosis was confirmed using transmission electron microscopy. Two randomly selected colony-born squirrel monkeys were splenectomized in an effort to activate and detect possible latent hemobartonellosis . One monkey became parasitemic 12 days following splenectomy. The second monkey was inoculated on day 14 with 1 ml of whole blood from an infected, but nonparasitemic monkey and developed overt parasitemia 3 days later (day 17 following splenectomy). Infections in the latter two monkeys were confirmed using scanning electron microscopy.
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Abstract
Infection with Haemobartonella muris was confirmed in a group of breeding rats. Possible transplacental transmission was investigated, but none of the off-spring from 6 litters became infected.
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Woods RJ, Parbhoo SP. Haemolytic anaemia in the Gunn rat following transplantation of isolated hepatocytes injected with Haemobartonella muris. Br J Exp Pathol 1981; 62:8-12. [PMID: 7013779 PMCID: PMC2041637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Extensively purified preparations of isolated rat hepatocytes derived from Wistar rats infected with Haemobartonella muris induced haemolytic anaemia when injected into congenitally jaundiced Gunn rats. In the absence of overt parasitaemia and marked falls in haematocrit, elevation of total plasma bilirubin levels was a valuable indicator of red-cell destruction. Evidence is presented that the parasite is removed by the spleen from the surface of infected red cells which then remain in the circulation.
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Harvey JW. Canine hemolytic anemias. J Am Vet Med Assoc 1980; 176:970-4. [PMID: 7380717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
MESH Headings
- Anaplasmataceae Infections/complications
- Anaplasmataceae Infections/veterinary
- Anemia, Hemolytic/etiology
- Anemia, Hemolytic/pathology
- Anemia, Hemolytic/veterinary
- Anemia, Hemolytic, Autoimmune/diagnosis
- Anemia, Hemolytic, Autoimmune/drug therapy
- Anemia, Hemolytic, Autoimmune/veterinary
- Anemia, Hemolytic, Congenital/enzymology
- Anemia, Hemolytic, Congenital/pathology
- Anemia, Hemolytic, Congenital/veterinary
- Animals
- Babesiosis/complications
- Babesiosis/therapy
- Cyclophosphamide/therapeutic use
- Dirofilariasis/complications
- Dirofilariasis/veterinary
- Disseminated Intravascular Coagulation/complications
- Disseminated Intravascular Coagulation/veterinary
- Dog Diseases/diagnosis
- Dog Diseases/drug therapy
- Dog Diseases/enzymology
- Dog Diseases/pathology
- Dogs
- Erythrocytes/pathology
- Pyruvate Kinase/deficiency
- Venae Cavae/pathology
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Bradley RL. A case of feline infectious anemia (haemobartonellosis) with simultaneous feline leukemia virus. Vet Med Small Anim Clin 1976; 71:1233-4. [PMID: 184578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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