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Risco D, Gonçalves P, Cerrato R, Fernández-Llario P. Similar antibody response observed in single-dose-vaccination vs. revaccination against Aujeszky's disease in wild boar. Acta Virol 2018; 62:455-458. [PMID: 30472877 DOI: 10.4149/av_2018_415] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Wild boar is an important reservoir of Aujeszky's disease virus (ADV). There is concern that transmission of this virus from wild boar to domestic pigs is possible. The aim of this work was to compare the antibody response produced by single dose of a gE-deleted ADV vaccine in wild boar to revaccinated animals, to assess if simple single-dose vaccination plans should be examined as a possible control measure against ADV in wild boar. Twenty-five wild boar (ages ranging between 2.5 to 5 months) were included in this study and distributed in three different groups: a control group (n = 5), a single-dose group (10 animals vaccinated only with one dose (day 0)) and a revaccinated group [10 animals vaccinated (day 0) and revaccinated (day 28)]. Mean antibody titers against ADV were determined in three groups using an ELISA assay at three different time points [day 0 (pre-vaccination), 28 (post 1st dose) and 56 (post 2nd dose)]. At day 28, single-dose and revaccinated groups showed a significant increment of antibody titers whereas antibodies in the control group remained stable. At day 56, revaccinated animals did not show a significant increment and antibody titers were similar to those found in animals vaccinated with one dose. These results indicate that vaccination with one dose produces a similar early antibody response to revaccination and therefore, should be examined as a possible control measure against ADV in wild boar. Keywords: Aujeszky's disease; serology; vaccination; wild boar.
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Cerrato R, Crabtree M, Antoniades C, Kublickiene K, Schiffrin EL, Channon KM, Böhm F. Effects Of Endothelin-1 On Intracellular Tetrahydrobiopterin Levels In Vascular Tissue. SCAND CARDIOVASC J 2018; 52:163-169. [PMID: 29566572 DOI: 10.1080/14017431.2018.1453942] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Revised: 03/08/2018] [Accepted: 03/12/2018] [Indexed: 10/17/2022]
Abstract
OBJECTIVE Tetrahydrobiopterin (BH4) is the essential cofactor of endothelial nitric oxide synthase (eNOS) and intracellular levels of BH4 is regulated by oxidative stress. The aim of this paper was to describe the influence of exogenous endothelin-1 on intracellular BH4 and its oxidation products dihydrobiopterin (BH2) and biopterin (B) in a wide range of vascular tissue. DESIGN Segments of internal mammary artery (IMA) and human saphenous vein (SV) from 41 patients undergoing elective surgery were incubated in ET-1 (0.1 μM). Aorta and lung from transgenic mice overexpressing ET-1 in the endothelium (ET-TG) were analysed with regards to intracellular biopterin levels. Human umbilical vein endothelial cells (HUVEC) were incubated in ET-1 (0.1 μM) and intracellular biopterin levels were analysed. From 6 healthy women undergoing caesarean section, subcutaneous fat was harvested and the resistance arteries in these biopsies were tested for ET-mediated endothelial dysfunction. RESULTS In HUVEC, exogenous ET-1 (0.1 μM) did not significantly change intracellular BH4, 1.54 ± 1.7 vs 1.68 ± 1.8 pmol/mg protein; p = .8. In IMA and SV, exogenous ET-1(0.1 μM) did not change intracellular BH4 n = 10, p = .4. In aorta from wild type vs ET-TG mice there was no significant difference in intracellular BH4 between the groups: 1.3 ± 0.49 vs 1.23 ± 0.3 pmol/mg protein; p = .6. In resistance arteries (n = 6) BH4 together with DTE (an antioxidant) was not able to prevent ET-mediated endothelial dysfunction. CONCLUSION ET-1 did not significantly alter intracellular tetrahydrobiopterin levels in IMA, SV, HUVEC or aorta from ET-TG mice. These findings are important for future research in ET-1 mediated superoxide production and endothelial dysfunction.
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Affiliation(s)
- Ruha Cerrato
- a Department of Medicine, Cardiology unit, Karolinska Institutet , Karolinska University Hospital , Stockholm , Sweden
| | - Mark Crabtree
- b Department of Cardiovascular Medicine , John Radcliffe Hospital, University of Oxford , Oxford , UK
| | - Charalambos Antoniades
- b Department of Cardiovascular Medicine , John Radcliffe Hospital, University of Oxford , Oxford , UK
| | - Karolina Kublickiene
- c Department of Obstetrics & Gynecology, Karolinska Institutet, Institution of Medicine and Institution for Clinical Science, Intervention & Technology , Karolinska University Hospital , Stockholm , Sweden
| | - Ernesto L Schiffrin
- d Department of Medicine, Lady Davis Institute for Medical Research , Sir Mortimer B. Davis-Jewish General Hospital, McGill University , Montreal , Quebec , Canada
| | - Keith M Channon
- b Department of Cardiovascular Medicine , John Radcliffe Hospital, University of Oxford , Oxford , UK
| | - Felix Böhm
- a Department of Medicine, Cardiology unit, Karolinska Institutet , Karolinska University Hospital , Stockholm , Sweden
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García-Jiménez WL, Benítez-Medina JM, Martínez R, Carranza J, Cerrato R, García-Sánchez A, Risco D, Moreno JC, Sequeda M, Gómez L, Fernández-Llario P, Hermoso-de-Mendoza J. Non-tuberculous mycobacteria in wild boar (Sus scrofa) from Southern Spain: epidemiological, clinical and diagnostic concerns. Transbound Emerg Dis 2013; 62:72-80. [PMID: 23895110 DOI: 10.1111/tbed.12083] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2012] [Indexed: 11/29/2022]
Abstract
Non-tuberculous mycobacteria (NTM) are widely distributed in the environment, particularly in wet soil, marshland, rivers or streams, but also are causative agents of a wide variety of infections in animals and humans. Little information is available regarding the NTM prevalence in wildlife and their effects or significance in the bovine tuberculosis (bTB) epidemiology and diagnosis. This research shows the most frequently NTM isolated in lymph nodes of wild boar (Sus scrofa) from southern Spain, relating the NTM presence with the individual characteristics, the management of animals and the possible misdiagnosis of Mycobacterium bovis in concurrent infections. A total of 219 NTM isolates were obtained from 1249 wild boar mandibular lymph nodes sampled between 2007 and 2011. All but 75 isolates were identified by the PCR-restriction analysis-hsp65, and a partial sequencing of the 16S rDNA was carried out to identify the rest of the isolates. Results showed that Mycobacterium chelonae was the most frequently isolated NTM specie (133 isolates, 60.7%), followed by Mycobacterium avium (24 isolates, 11%). No relation was found regarding sex, body condition and management, but M. chelonae was more frequently detected in adults, whereas M. avium was more prevalent in subadults. The high NTM prevalence observed in the studied wild boar populations could make difficult the bTB diagnostic.
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Affiliation(s)
- W L García-Jiménez
- Red de Grupos de Investigación Recursos Faunísticos, Facultad de Veterinaria, Universidad de Extremadura, Cáceres, Spain
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García-Jiménez WL, Fernández-Llario P, Benítez-Medina JM, Cerrato R, Cuesta J, García-Sánchez A, Gonçalves P, Martínez R, Risco D, Salguero FJ, Serrano E, Gómez L, Hermoso-de-Mendoza J. Reducing Eurasian wild boar (Sus scrofa) population density as a measure for bovine tuberculosis control: effects in wild boar and a sympatric fallow deer (Dama dama) population in Central Spain. Prev Vet Med 2013; 110:435-46. [PMID: 23490145 DOI: 10.1016/j.prevetmed.2013.02.017] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2012] [Revised: 02/08/2013] [Accepted: 02/13/2013] [Indexed: 02/06/2023]
Abstract
Research on management of bovine tuberculosis (bTB) in wildlife reservoir hosts is crucial for the implementation of effective disease control measures and the generation of practical bTB management recommendations. Among the management methods carried out on wild species to reduce bTB prevalence, the control of population density has been frequently used, with hunting pressure a practical strategy to reduce bTB prevalence. However, despite the number of articles about population density control in different bTB wildlife reservoirs, there is little information regarding the application of such measures on the Eurasian wild boar (Sus scrofa), which is considered the main bTB wildlife reservoir within Mediterranean ecosystems. This study shows the effects of a management measure leading to a radical decrease in wild boar population density at a large hunting estate in Central Spain, in order to assess the evolution of bTB prevalence in both the wild boar population and the sympatric fallow deer population. The evolution of bTB prevalence was monitored in populations of the two wild ungulate species over a 5-year study period (2007-2012). The results showed that bTB prevalence decreased in fallow deer, corresponding to an important reduction in the wild boar population. However, this decrease was not homogeneous: in the last season of study there was an increase in bTB-infected male animals. Moreover, bTB prevalence remained high in the remnant wild boar population.
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Affiliation(s)
- W L García-Jiménez
- Red de Grupos de Investigación Recursos Faunísticos, Facultad de Veterinaria, Universidad de Extremadura, E-10003 Cáceres, Spain.
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Cerrato R, Cunnington C, Crabtree MJ, Antoniades C, Pernow J, Channon KM, Böhm F. Endothelin-1 increases superoxide production in human coronary artery bypass grafts. Life Sci 2012; 91:723-8. [PMID: 22483692 DOI: 10.1016/j.lfs.2012.03.024] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2011] [Revised: 02/23/2012] [Accepted: 02/28/2012] [Indexed: 01/17/2023]
Abstract
AIMS Endothelin-1 (ET-1) has been shown to increase endothelial superoxide (O(2)(-)) production in experimental animal models. It is unclear whether ET-1 increases O(2)(-) production in humans. We sought to elucidate whether ET-1 increases O(2)(-) production in human vessels and to identify the mechanism behind this effect. MAIN METHODS Segments of internal mammary artery (IMA) and human saphenous vein (HSV) were harvested from 90 patients undergoing elective coronary artery bypass graft surgery. Paired vessel rings were incubated in the presence and absence of ET-1 (10(-10)M), the ET(A) receptor antagonist BQ123 alone, or in combination with the ET(B) receptor antagonist BQ788 (dual BQ) and known inhibitors of sources of O(2)(-) and further analysed for O(2)(-) production using lucigenin-enhanced chemiluminescence and DHE fluorescence. KEY FINDINGS ET-1 increased O(2)(-) production in both IMA (2.6 ± 1.5 vs. 1.4 ± 0.8 relative light units/s/mg tissue (RLU); n=33; p < 0.0001) and HSV (1.4 ± 0.8 vs. 1.1 ± 0.6 RLU; n=24; p<0.05). The increase in O(2)(-)production induced by ET-1 in IMA was inhibited by co-incubation with dual BQ (p < 0.05; n=15) and BQ123 (p<0.05; n = 17). Of known O(2)(-) inhibitors, only incubation with Tiron and diphenyleneiodonium resulted in a significant reduction in ET-mediated O(2)(-) production. SIGNIFICANCE ET-1 increases O(2)(-) production especially in human arteries and less so in veins from patients with coronary artery disease via a receptor-dependent pathway involving a flavin dependent enzyme which is likely to be NADPH oxidase. Production of O(2)(-) may be an important factor underlying the negative effects of ET-1 on vascular function such as impairment of endothelium-dependent vasodilatation and pro-inflammatory effects.
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Affiliation(s)
- R Cerrato
- Karolinska Institutet, Department of Medicine, Cardiology unit, Karolinska University Hospital, Stockholm, Sweden.
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Cunnington C, Van Assche T, Shirodaria C, Kylintireas I, Lindsay AC, Lee JM, Antoniades C, Margaritis M, Lee R, Cerrato R, Crabtree MJ, Francis JM, Sayeed R, Ratnatunga C, Pillai R, Choudhury RP, Neubauer S, Channon KM. Systemic and vascular oxidation limits the efficacy of oral tetrahydrobiopterin treatment in patients with coronary artery disease. Circulation 2012; 125:1356-66. [PMID: 22315282 PMCID: PMC5238935 DOI: 10.1161/circulationaha.111.038919] [Citation(s) in RCA: 122] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
BACKGROUND The endothelial nitric oxide synthase cofactor tetrahydrobiopterin (BH4) plays a pivotal role in maintaining endothelial function in experimental vascular disease models and in humans. Augmentation of endogenous BH4 levels by oral BH4 treatment has been proposed as a potential therapeutic strategy in vascular disease states. We sought to determine the mechanisms relating exogenous BH4 to human vascular function and to determine oral BH4 pharmacokinetics in both plasma and vascular tissue in patients with coronary artery disease. METHODS AND RESULTS Forty-nine patients with coronary artery disease were randomized to receive low-dose (400 mg/d) or high-dose (700 mg/d) BH4 or placebo for 2 to 6 weeks before coronary artery bypass surgery. Vascular function was quantified by magnetic resonance imaging before and after treatment, along with plasma BH4 levels. Vascular superoxide, endothelial function, and BH4 levels were determined in segments of saphenous vein and internal mammary artery. Oral BH4 treatment significantly augmented BH4 levels in plasma and in saphenous vein (but not internal mammary artery) but also increased levels of the oxidation product dihydrobiopterin (BH2), which lacks endothelial nitric oxide synthase cofactor activity. There was no effect of BH4 treatment on vascular function or superoxide production. Supplementation of human vessels and blood with BH4 ex vivo revealed rapid oxidation of BH4 to BH2 with predominant BH2 uptake by vascular tissue. CONCLUSIONS Oral BH4 treatment augments total biopterin levels in patients with established coronary artery disease but has no net effect on vascular redox state or endothelial function owing to systemic and vascular oxidation of BH4. Alternative strategies are required to target BH4-dependent endothelial function in established vascular disease states.
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Affiliation(s)
- Colin Cunnington
- Department of Cardiovascular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, UK
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Antoniades C, Cunnington C, Antonopoulos A, Neville M, Margaritis M, Demosthenous M, Bendall J, Hale A, Cerrato R, Tousoulis D, Bakogiannis C, Marinou K, Toutouza M, Vlachopoulos C, Leeson P, Stefanadis C, Karpe F, Channon KM. Induction of vascular GTP-cyclohydrolase I and endogenous tetrahydrobiopterin synthesis protect against inflammation-induced endothelial dysfunction in human atherosclerosis. Circulation 2011; 124:1860-70. [PMID: 21969008 PMCID: PMC5238937 DOI: 10.1161/circulationaha.111.029272] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND The endothelial nitric oxide synthase cofactor tetrahydrobiopterin (BH4) is essential for maintenance of enzymatic function. We hypothesized that induction of BH4 synthesis might be an endothelial defense mechanism against inflammation in vascular disease states. METHODS AND RESULTS In Study 1, 20 healthy individuals were randomized to receive Salmonella typhi vaccine (a model of acute inflammation) or placebo in a double-blind study. Vaccination increased circulating BH4 and interleukin 6 and induced endothelial dysfunction (as evaluated by brachial artery flow-mediated dilation) after 8 hours. In Study 2, a functional haplotype (X haplotype) in the GCH1 gene, encoding GTP-cyclohydrolase I, the rate-limiting enzyme in biopterin biosynthesis, was associated with endothelial dysfunction in the presence of high-sensitivity C-reactive protein in 440 coronary artery disease patients. In Study 3, 10 patients with coronary artery disease homozygotes for the GCH1 X haplotype (XX) and 40 without the haplotype (OO) underwent S Typhi vaccination. XX patients were unable to increase plasma BH4 and had a greater reduction of flow-mediated dilation than OO patients. In Study 4, vessel segments from 19 patients undergoing coronary bypass surgery were incubated with or without cytokines (interleukin-6/tumor necrosis factor-α/lipopolysaccharide) for 24 hours. Cytokine stimulation upregulated GCH1 expression, increased vascular BH4, and improved vasorelaxation in response to acetylcholine, which was inhibited by the GTP-cyclohydrolase inhibitor 2,4-diamino-6-hydroxypyrimidine. CONCLUSIONS The ability to increase vascular GCH1 expression and BH4 synthesis in response to inflammation preserves endothelial function in inflammatory states. These novel findings identify BH4 as a vascular defense mechanism against inflammation-induced endothelial dysfunction.
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Affiliation(s)
- Charalambos Antoniades
- Department of Cardiovascular Medicine, University of Oxford, John Radcliffe Hospital, Hedley Way, OX3 9DU, Oxford, UK
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Grönros J, Jung C, Lundberg JO, Cerrato R, Östenson CG, Pernow J. Arginase inhibition restores in vivo coronary microvascular function in type 2 diabetic rats. Am J Physiol Heart Circ Physiol 2011; 300:H1174-81. [DOI: 10.1152/ajpheart.00560.2010] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Nitric oxide (NO) is crucial for maintaining normal endothelial function and vascular integrity. Increased arginase activity in diabetes might compete with NO synthase (NOS) for their common substrate arginine, resulting in diminished production of NO. The aim of this study was to evaluate coronary microvascular function in type 2 diabetic Goto-Kakizaki (GK) rats using in vivo coronary flow velocity reserve (CFVR) and the effect of arginase inhibition to restore vascular function. Different groups of GK and Wistar rats were given vehicle, the arginase inhibitor Nω-hydroxy-nor-l-arginine (nor-NOHA), l-arginine, and the NOS inhibitor NG-monomethyl -l-arginine (l-NMMA). GK rats had impaired CFVR compared with Wistar rats (1.31 ± 0.09 vs. 1.87 ± 0.05, P < 0.001). CFVR was restored by nor-NOHA treatment compared with vehicle in GK rats (1.71 ± 0.13 vs. 1.23 ± 0.12, P < 0.05) but remained unchanged in Wistar rats (1.88 ± 0.10 vs. 1.79 ± 0.16). The beneficial effect of nor-NOHA in GK rats was abolished after NOS inhibition. CFVR was not affected by arginine compared with vehicle. Arginase II expression was increased in the aorta and myocardium from GK rats compared with Wistar rats. Citrulline-to-ornithine and citrulline-to-arginine ratios measured in plasma increased significantly more in GK rats than in Wistar rats after nor-NOHA treatment, suggesting a shift of arginine utilization from arginase to NOS. In conclusion, coronary artery microvascular function is impaired in the type 2 diabetic GK rat. Treatment with nor-NOHA restores the microvascular function by a mechanism related to increased utilization of arginine by NOS and increased NO availability.
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Affiliation(s)
| | | | - Jon O. Lundberg
- Department of Physiology and Pharmacology, Division of Pharmacology, and
| | | | - Claes-Göran Östenson
- Department of Molecular Medicine and Surgery, Karolinska Institute, Stockholm, Sweden
| | - John Pernow
- Department of Medicine, Division of Cardiology,
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Hermoso de Mendoza J, Parra A, Tato A, Alonso JM, Rey JM, Peña J, García-Sánchez A, Larrasa J, Teixidó J, Manzano G, Cerrato R, Pereira G, Fernández-Llario P, Hermoso de Mendoza M. Bovine tuberculosis in wild boar (Sus scrofa), red deer (Cervus elaphus) and cattle (Bos taurus) in a Mediterranean ecosystem (1992–2004). Prev Vet Med 2006; 74:239-47. [PMID: 16297475 DOI: 10.1016/j.prevetmed.2005.10.005] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2004] [Revised: 09/06/2005] [Accepted: 10/04/2005] [Indexed: 11/19/2022]
Abstract
During the last 12 years, an increasing frequency in condemnation of hunted red deer and wild boar carcasses due to the presence of tubercle-like lesions has been observed in Extremadura (Western Spain). Before 1993, tuberculosis was a very rare finding in hunted animals. The current tuberculosis regional prevalence in cattle approaches 0.4% after years of expensive test and slaughter campaigns. It is imperative to investigate the epidemiology of Mycobacterium bovis infection in red deer and wild boar in order to keep a good health status and to maintain the effectiveness of domestic species TB eradication programs. The present paper evaluates the problem in Sierra de San Pedro, estimating the prevalence of TB in wild boar and red deer, the main wild artiodactyls in the area, and domestic cattle since 1992-2004, by the use of a low-cost surveillance method based on detailed pathological inspection of hunted animal carcasses. Microbiology and molecular epidemiology studies on several M. bovis isolates from domestic and wild animals helped to define the interspecies contacts. These findings, as well as recent history of game estates management and descriptive epidemiology field work, throw light on the rise and maintenance of these epizootics.
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Affiliation(s)
- J Hermoso de Mendoza
- Patología Infecciosa, Departamento de Medicina y Sanidad Animal, Facultad de Veterinaria, Universidad de Extremadura, Cáceres, Spain.
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Nitsche FO, Bell R, Carbotte SM, Ryan WBF, Slagle A, Chillrud S, Kenna T, Flood R, Ferrini V, Cerrato R, McHugh C, Strayer D. Integrative acoustic mapping reveals Hudson River sediment processes and habitats. ACTA ACUST UNITED AC 2005. [DOI: 10.1029/2005eo240002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Abstract
The possible association between a severe traumatic life event (death of a child) and breast cancer risk was examined in a case-control study nested within a nation-wide cohort in Sweden. Our study population included 27,571 women with breast cancer and 141,798 control women born between 1925-1976. After adjustment for age, parity, age at first birth and education, the overall risk estimate for breast cancer among all women that had experienced the death of a child was 1.05 (95% confidence interval [CI] = 0.96-1.15). Among uniparous women the corresponding odds ratio (OR) was 1.27 (95% CI = 0.98-1.64). When stratifying for child's age at death a significant risk increase was detected among women that had lost their only child when the child was between 1-4 years of age (OR = 2.65; 95% CI = 1.06-6.60). These findings do not support an overall increase in breast cancer risk after the death of a child, a severe traumatic life event. Based on a small number of subjects, our finding of an increased risk in a subgroup of uniparous women losing their only child could be due to chance.
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Affiliation(s)
- Mats Lambe
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden.
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Mateos E, Valle J, Píriz S, Cerrato R, Jiménez R, Perea Remujo A, Vadillo S. Ribotyping ofFusobacterium necrophorumStrains Isolated from Bovine and Ovine Hepatic Abscesses. Anaerobe 1998; 4:213-8. [PMID: 16887645 DOI: 10.1006/anae.1998.0166] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/1997] [Accepted: 09/14/1998] [Indexed: 11/22/2022]
Abstract
A microbiological study was made of 100 strains of Fusobacterium necrophorum isolated from hepatic abscesses in bovine and ovine herds. Differences between the biological activity and ribotypes within the two F. necrophorum subspecies were studied. Conventional methods identified 89 isolates as F. necrophorum subsp. necrophorum and 11 as F. necrophorum subsp. funduliforme. For ribotyping, 50 strains (35 F.n. subsp. necrophorum, 11 F.n. subsp. funduliforme and 4 reference strains) were digested with restriction endonucleases (HindIII, EcoRI and BamHI) and examined after hybridization with digoxigenin-labelled cDNA probe transcribed from a 16 and 23S rRNAs from Escherichia coli. The most discriminating restriction endonuclease enzymes for ribotyping were EcoRI and BamHI. The presence or absence of two distinct band of 5 kb (EcoRI) and 10.5 kb (BamHI) differentiated the two subspecies. This technique also revealed genetic differences between isolates which could be used in the epidemiological study of clinical processes caused by F. necrophorum.
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Affiliation(s)
- E Mateos
- Departamento de Medicina y Sanidad Animal, Microbiología e Inmunología, Facultad de Veterinaria, Universidad de Extremadura, Cáceres, Spain
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