Brucella suis infection in domestic pigs in Sardinia (Italy)

2014 ◽  
Vol 143 (10) ◽  
pp. 2170-2177 ◽  
Author(s):  
C. PILO ◽  
M. T. TEDDE ◽  
G. ORRÙ ◽  
G. ADDIS ◽  
M. LICIARDI
Keyword(s):  
Complement Fixation Test ◽  
Complement Fixation ◽  
Bacteriological Examination ◽  
Chain Reaction ◽  
Serum Samples ◽  
Domestic Pigs ◽  
Brucella Suis ◽  
Commercial Farms ◽  
Polymerase Chain ◽  
The Rose

SUMMARYDuring a 4-year (2007–2010) survey, the presence of Brucella suis infection in domestic pigs in Sardinia was investigated. Serum samples were collected from breeding pigs located on 108 commercial farms with documented reproductive problems and analysed using the Rose Bengal (RBT) and complement fixation (CFT) tests for screening and confirmation of Brucella, respectively. Of the 1251 serum samples analysed by RBT, 406 sera, originating from 36 farms, were positive for B. suis. CFT was positive in 292/748 sera analysed, confirming positivity in all 36 pig herds. Pigs with international complement fixation test units per ml (ICFTU/ml) values ⩾160 were slaughtered, and their organs collected for bacteriological examination and testing by polymerase chain reaction (PCR). Brucella spp. strains were isolated in culture from 13/502 organs analysed, and subsequently identified as B. suis biovar 2. PCR detected positivity to Brucella spp. in 19/285 organs analysed. These results confirm the presence and emergence of B. suis infection in domestic pigs in Sardinia.

scholarly journals Seroprevalence and Molecular Identification of Brucella spp. in Camels in Egypt

2020 ◽  
Vol 8 (7) ◽  
pp. 1035 ◽  
Author(s):  
Aman Ullah Khan ◽  
Ashraf E. Sayour ◽  
Falk Melzer ◽  
Sherif Abdel Ghafar Elsayed El-Soally ◽  
Mandy C. Elschner ◽  
...  
Keyword(s):  
Complement Fixation Test ◽  
Indirect Elisa ◽  
Complement Fixation ◽  
Brucella Melitensis ◽  
Control Strategies ◽  
Effective Control ◽  
Brucella Species ◽  
Serum Samples ◽  
Brucella Suis ◽  
The Rose

Brucellosis is one of the most important worldwide zoonoses of many countries including Egypt. Camel brucellosis has not gained much attention in Egypt yet. This study is focused on the three governorates with the highest camel populations and the largest camel markets in the country to determine the disease seroprevalence and identify the Brucella species in local camel holdings. In total, 381 serum samples were collected from male and female camels from Giza, Aswan, and Al-Bahr Al-Ahmar (the Red Sea) governorates. Samples were serologically examined using the Rose–Bengal plate test (RBPT), indirect ELISA (i-ELISA), competitive ELISA (c-ELISA) and complement fixation test (CFT). Brucella antibodies were detected in 59 (15.5%), 87 (22.8%), 77 (20.2%) and 118 (31.0%) of sera by RBPT, i-ELISA, c-ELISA and CFT, respectively. Using real-time PCR, Brucella DNA was amplified in 32 (8.4%) seropositive samples including Brucella abortus (25/32), Brucella suis (5/32) and Brucella melitensis (2/32), defining a complex epidemiological status. To the best of our knowledge, this is the first study reporting Brucella suis DNA in camel serum. The risk-associated factors including age, sex, breed and geographical distribution were statistically analyzed, showing non-significant association with seroprevalence. The results of this study will raise awareness for camel brucellosis and help develop effective control strategies.

scholarly journals Deteksi Brucellosis pada Babi secara Serologis dan Molekuler di Rumah Potong Hewan Kapuk, Jakarta dan Ciroyom, Bandung

2018 ◽  
Vol 5 (2) ◽  
pp. 66-73
Author(s):  
Dina Kartini ◽  
Susan Maphilindawati Noor ◽  
Fachriyan Hasmi Pasaribu
Keyword(s):  
Polymerase Chain Reaction ◽  
Rose Bengal ◽  
Brucella Abortus ◽  
Complement Fixation Test ◽  
Complement Fixation ◽  
Fixation Test ◽  
Chain Reaction ◽  
Rose Bengal Test ◽  
Brucella Suis ◽  
Polymerase Chain

Brucellosis pada babi merupakan penyakit zoonosis yang disebabkan oleh bakteri Brucella suis. Penyakit ini telah terdeteksi di Indonesia, namun belum banyak diteliti. Pada penelitian ini dilakukan deteksi brucellosis pada babi secara serologis menggunakan metode Rose Bengal Test (RBT) dan Complement Fixation Test (CFT) serta secara molekuler menggunakan teknik Polymerase Chain Reaction (PCR) AMOS untuk mengetahui spesies Brucella yang menginfeksi babi. Sampel penelitian berupa serum dan limfonodus dikoleksi dari 2 Rumah Potong Hewan Kapuk, Jakarta dan Ciroyom, Bandung. Hasil  pengujian secara serologis menunjukkan bahwa brucellosis tidak ditemukan pada sampel babi dari Rumah Potong Hewan Kapuk, Jakarta. Sementara hasil pengujian secara serologis dari Rumah Potong Hewan Ciroyom, Bandung menunjukkan 2,5% (1/40) positif dan 7,5%(3/40) positif PCR. Hasil PCR positif menunjukkan terdeteksi 2 spesies Brucella (B. abortus dan B. suis) pada 2 sampel organ limfonodus dan Brucella suis pada satu sampel limfonodus, sedangkan dari organ limpa terdektesi dua sampel positif Brucella suis. Hal ini menunjukkan bahwa selain Brucella suis, Brucella abortus juga menginfeksi babi pada penelitian ini.

scholarly journals The serological response of cattle to vaccines against brucellosis, as measured by the brucellosis radioimmunoassay and other tests

1982 ◽  
Vol 88 (1) ◽  
pp. 11-19 ◽  
Author(s):  
R. J. Chappel ◽  
J. Hayes ◽  
B. A. Rogerson ◽  
L. J. Shenfield
Keyword(s):  
Brucella Abortus ◽  
Complement Fixation Test ◽  
Complement Fixation ◽  
Agglutination Test ◽  
Serological Response ◽  
Serum Samples ◽  
Plate Test ◽  
The Rose ◽  
Serum Agglutination ◽  
Haemolysis Test

SummarySerum samples were obtained from 281 heifers vaccinated with Brucella abortus strain 19, and from 50 heifers that had received two injections of killed B. abortus strain 45/20 adjuvant (K45/20A) vaccine. The serological response measured by the brucellosis radioimmunoassay (RIA) was compared with responses measured by other tests.The serological responses of cattle during the first weeks after strain 19 vaccination were found to give little guide to the frequency of persistent reactions.In the case of strain 19, persistent reactions were considered to be those occurring 12 or more months after vaccination. In heifers vaccinated at the recommended age, small numbers of persistent reactions were given by the RIA (four in 374 sera), the complement fixation test using warm fixation (CFTW) (six in 383) and cold fixation (one in 185), the serum agglutination test (two in 222) and the indirect haemolysis test (IHLT) (two in 369). The Rose Bengal plate test gave 74 persistent reactions in 374 sera.Five of the 50 heifers gave particularly prolonged responses to K45/20A vaccine. In these animals the RIA and IHLT remained positive for longer than the CFTW.

Rapid detection of Chlamydia/Chlamydophila group in samples collected from swine herds with and without reproductive disorders

2014 ◽  
Vol 17 (2) ◽  
pp. 367-369 ◽  
Author(s):  
K. Rypula ◽  
A. Kumala ◽  
P. Lis ◽  
K. Niemczuk ◽  
K. Płoneczka-Janeczko ◽  
...  
Keyword(s):  
Real Time ◽  
Real Time Pcr ◽  
Rapid Detection ◽  
Complement Fixation Test ◽  
Complement Fixation ◽  
Fixation Test ◽  
Reproductive Disorders ◽  
Serum Samples ◽  
Swine Herds

Abstract The study was carried out in seven reproductive herds of pigs. In three of them reproductive disorders were observed. Three herds consisted of 10-50 and four consisted of 120-500 adult sows and they were called small and medium, respectively. Fifty-seven adult sows were randomly selected from herds. Serum samples were tested using the complement fixation test and swabs from both eyes and from the vaginal vestibule were examined using real-time PCR. All serum samples were negative. Infected sows were present in each of the study herds. In total, there were 28 positive samples (53%, 28/48) in real-time PCR in sows with reproductive disorders and 35 (53%, 35/66) in sows selected from herds without problems in reproduction. One isolate proved to be Chlamydophila pecorum, whereas all the remaining were Chamydia suis

scholarly journals Serum lnc34a is a potential prediction biomarker for bone metastasis in hepatocellular carcinoma patients

BMC Cancer ◽  
2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Li Zhang ◽  
Hao Niu ◽  
Ping Yang ◽  
Jie Ma ◽  
Bao-Ying Yuan ◽  
...  
Keyword(s):  
Hepatocellular Carcinoma ◽  
Bone Metastasis ◽  
Univariate Analysis ◽  
High Serum ◽  
Chain Reaction ◽  
Serum Samples ◽  
Early Screening ◽  
Expression Levels ◽  
Node Metastasis ◽  
Polymerase Chain

Abstract Background Early screening and intervention therapies are crucial to improve the prognosis of hepatocellular carcinoma (HCC) patients with bone metastasis. We aimed to identify serum lncRNA as a prediction biomarker in HCC bone metastasis. Methods The expression levels of lnc34a in serum samples from 157 HCC patients were detected by quantitative real-time polymerase chain reaction (PCR). Univariate analysis and multivariate analysis were performed to determine statistically significant variables. Results Expression levels of lnc34a in serum from HCC patients with bone metastasis were significantly higher than those without bone metastasis. The high expressions of lnc34a, vascular invasion and Barcelona Clinic Liver Cancer (BCLC) stage were associated with bone metastasis by analysis. Moreover, lnc34a expression was specifically associated with bone metastasis rather than lung or lymph node metastasis in HCC. Conclusions High serum lnc34a expression was a independent risk factor for developing bone metastasis in HCC.

scholarly journals Brucella abortus RB51 and Hot Saline Extract from Brucella ovis as Antigens in a Complement Fixation Test Used To Detect Sheep Vaccinated with Brucella abortus RB51

2001 ◽  
Vol 8 (1) ◽  
pp. 119-122 ◽  
Author(s):  
Rosanna Adone ◽  
Franco Ciuchini
Keyword(s):  
Immune Responses ◽  
Brucella Abortus ◽  
Complement Fixation Test ◽  
Complement Fixation ◽  
Infected Sheep ◽  
Fixation Test ◽  
Anticomplementary Activity ◽  
Serum Samples ◽  
Saline Extract ◽  
Brucella Ovis

ABSTRACT The efficacy of Brucella abortus RB51 and hot saline extract (HSE) from Brucella ovis as antigens in complement fixation (CF) tests was comparatively evaluated in detecting immune responses of sheep vaccinated with B. abortus strain RB51. For this study, four 5-month-old sheep were vaccinated subcutaneously with 5 × 109 CFU of RB51, and two sheep received saline. Serum samples collected at different times after vaccination were tested for the presence of antibodies to RB51 by a CF test with RB51 as antigen, previously deprived of anticomplementary activity, and with HSE antigen, which already used as the official antigen to detectB. ovis-infected sheep. The results showed that vaccinated sheep developed antibodies which reacted weakly against HSE antigen and these antibodies were detectable for 30 days after vaccination. However, antibodies to RB51 could be detected for a longer period after vaccination by using homologous RB51 antigen in CF tests. In fact, high titers were still present at 110 days postvaccination with RB51 antigen. Sera from sheep naturally infected with B. ovisalso reacted to RB51 but gave lower titers than those detected by HSE antigen. As expected, all sera from RB51-vaccinated sheep remained negative when tested with standard S-type Brucella standard antigens.

scholarly journals A quantitative comparison of the sensitivity of serological tests for bovine brucellosis to different antibody classes

1976 ◽  
Vol 76 (2) ◽  
pp. 287-298 ◽  
Author(s):  
G. S. Allan ◽  
R. J. Chappel ◽  
P. Williamson ◽  
D. J. McNaught
Keyword(s):  
Complement Fixation Test ◽  
Complement Fixation ◽  
Quantitative Comparison ◽  
Agglutination Test ◽  
Bovine Brucellosis ◽  
Serological Tests ◽  
Plate Test ◽  
Specific Antibodies ◽  
The Rose ◽  
Serum Agglutination

SUMMARYBrucella-specific antibodies of different immunoglobulin classes were quantitatively evaluated with respect to their efficiency in serological tests for bovine brucellosis.IgM reacted more efficiently than IgG1and IgG2in both the Rose Bengal plate test and serum agglutination test. The complement fixation test was found to be slightly more sensitive to IgM than to IgG1and did not react to IgG2.IgM was, however, partly inactivated when heated at 60°C. in the presence of serum.

scholarly journals Development of Immunochromatographic Assay for the Rapid Detection of Mycoplasma capricolum subsp. capripneumoniae Antibodies

2022 ◽  
Vol 12 ◽  
Author(s):  
Zhen Zhu ◽  
Guanggang Qu ◽  
Changjiang Wang ◽  
Lei Wang ◽  
Jige Du ◽  
...  
Keyword(s):  
Immunoglobulin G ◽  
Colloidal Gold ◽  
Complement Fixation Test ◽  
Complement Fixation ◽  
Fixation Test ◽  
Immunochromatographic Assay ◽  
Economic Losses ◽  
Serum Samples ◽  
Mycoplasma Capricolum ◽  
Prokaryotic Expression System

Mycoplasma capricolum subsp. capripneumoniae (Mccp) is the cause of contagious caprine pleuropneumonia (CCPP), which is a highly significant respiratory disease in goats leading to significant economic losses in Africa and Asia. Currently available procedures for the diagnosis of CCPP have some limitations in sensitivity, specificity, operation time, requirement of sophisticated equipment or skilled personnel, and cost. In this study, we developed a rapid, sensitive, and specific colloidal gold-based immunochromatographic assay (GICA) strip for the efficient on-site detection of antibodies against Mccp in the serum within 10 min. For the preparation of this colloidal GICA strip, recombinant P20 protein, the membrane protein of Mccp, was expressed by Escherichia coli prokaryotic expression system after purification was used as the binding antigen in the test. The rabbit anti-goat immunoglobulin G labeled with the colloidal gold was used as the detection probe, whereas the goat anti-rabbit immunoglobulin G was coated on the nitrocellulose membrane as the control line. The concentration of the coating antibody was optimized, and the effectiveness of this colloidal GICA strip was evaluated. Our results proved that the detection limit of the test strip was up to 1:64 dilutions for the Mccp antibody-positive serum samples with no cross-reactivity with other pathogens commonly infecting small ruminants,including goat pox virus, peste des petits ruminants virus, foot-and-mouth disease virus type A, or other mycoplasmas. Moreover, the colloidal GICA strip was more sensitive and specific than the indirect hemagglutination assay for the detection of Mccp antibodies. The 106 clinical serum samples were detected by the colloidal GICA strip compared with the complement fixation test, demonstrating an 87.74% concordance with the complement fixation test. This novel colloidal GICA strip would be an effective tool for the cost-effective and rapid diagnosis of CCPP in the field.

scholarly journals Field evidence that roe deer (Capreolus capreolus) are a natural host for Ehrlichia phagocytophila

2000 ◽  
Vol 124 (2) ◽  
pp. 315-323 ◽  
Author(s):  
M. P. ALBERDI ◽  
A. R. WALKER ◽  
K. A. URQUHART
Keyword(s):  
Ixodes Ricinus ◽  
Roe Deer ◽  
Capreolus Capreolus ◽  
Chain Reaction ◽  
Serum Samples ◽  
Blood Samples ◽  
Ehrlichia Phagocytophila ◽  
The United Kingdom ◽  
Field Evidence ◽  
Polymerase Chain

Samples of blood, spleen and legs from 112 culled roe deer (Capreolus capreolus) were collected from nine sites widespread in the United Kingdom. The prevalence of infection with Ehrlichia phagocytophila was determined by serology and polymerase chain reaction. Means of 58% of 102 plasma or serum samples were seroreactive by IFA, 38% of 84 blood samples and 29% of 82 spleen samples were positive by PCR. Ticks on legs of 71 roe deer were Ixodes ricinus larvae, nymphs and adults and 83% of legs were infested. Numbers of ticks corresponded positively to the percentage of samples positive for E. phagocytophila by serology and PCR for different sampling sites. Ixodes ricinus nymphs collected from the vegetation at one site with infected deer were analysed for infection with E. phagocytophila by examination of Feulgen stained salivary glands. Of 135 nymphs 5% were infected. These results confirm that roe deer are commonly parasitized by both E. phagocytophila and its vector tick in such a way that it is likely to be an important natural mammalian reservoir of E. phagocytophila.

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