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Lu J, Li C, Zhang E, Hou S, Xiao K, Li X, Zhang L, Wang Z, Chen C, Li C, Li T. Novel Vertical Flow Immunoassay with Au@PtNPs for Rapid, Ultrasensitive, and On-Site Diagnosis of Human Brucellosis. ACS OMEGA 2023; 8:29534-29542. [PMID: 37599942 PMCID: PMC10433357 DOI: 10.1021/acsomega.3c03381] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Accepted: 07/18/2023] [Indexed: 08/22/2023]
Abstract
Brucellosis is an infectious zoonosis caused by Brucella with clinical symptoms of wavy fever, fatigue, and even invasion of tissues and organs in the whole body, posing a serious threat to public health around the world. Herein, a novel vertical flow immunoassay based on Au@Pt nanoparticles (Au@PtNPs-VFIA) was established for detection of Brucella IgG antibody in clinical serum samples. The testing card of Au@PtNPs-VFIA was manufactured by printing the purified Brucella LPS and goat antimouse IgG on the nitrocellulose membrane as the test-spot or control-spot, respectively. Au@PtNPs labeled with protein G (Au@PtNPs-prG) were concurrently employed as detection probes presenting visible spots and catalysts mimicking catalytic enzymes to catalyze the DAB substrate (H2O2 plus O-phenylenediamine) for deepening color development. The testing procedure of Au@PtNPs-VFIA takes 2-3 min, and the limit of detection (LOD) for Brucella antibody is 0.1 IU/mL, which is faster and more sensitive than that of Au@PtNP-based lateral flow immunoassay (Au@PtNPs-LFIA: 15 min and 1.56 IU/mL, respectively). By comparing with vertical flow immunoassay based on classic Au nanoparticles (AuNPs-VFIA), the Au@PtNPs-VFIA is 32 times or 16 times more sensitive with or without further development of DAB substrate catalysis. Au@PtNPs-VFIA did not react with the serum samples of Gram-negative bacterium infections but only weakly cross-reacted with diagnostic serum of Y. enterocolitica O9 infection. In detection of clinical samples, Au@PtNPs-VFIA was validated for possessing 98.33% sensitivity, 100% specificity, and 99.17% accuracy, which were comparable with or even better than those obtained by the Rose-Bengal plate agglutination test, serological agglutination test, AuNPs-VFIA, and Au@PtNPs-LFIA. Therefore, this newly developed Au@PtNPs-VFIA has potential for rapid, ultrasensitive, and on-site diagnosis of human Brucellosis in clinics.
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Affiliation(s)
- Jinhui Lu
- Department
of Transfusion Medicine, School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou 510515, China
| | - Chengcheng Li
- Department
of Transfusion Medicine, School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou 510515, China
| | - Enhui Zhang
- Department
of Transfusion Medicine, School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou 510515, China
| | - Shuiping Hou
- Department
of Transfusion Medicine, School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou 510515, China
- Microbiological
Laboratory, Guangzhou Center for Disease
Control and Prevention, Guangzhou 510440, China
| | - Ke Xiao
- Department
of laboratory Medicine, Guangdong Second
Traditional Chinese Medicine Hospital, Guangzhou 510095, China
| | - Xiaozhou Li
- Department
of Transfusion Medicine, School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou 510515, China
| | - Ling Zhang
- Department
of Transfusion Medicine, School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou 510515, China
| | - Zhen Wang
- Animal
Science and Technology College, Shihezi
University, Shihezi 832002, Xinjiang, China
| | - Chuangfu Chen
- Animal
Science and Technology College, Shihezi
University, Shihezi 832002, Xinjiang, China
| | - Chengyao Li
- Department
of Transfusion Medicine, School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou 510515, China
| | - Tingting Li
- Department
of Transfusion Medicine, School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou 510515, China
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Alhussain H, Zughaier SM, Gawish A, Mahmoud MH, Yassine HM, Al Thani A, Obied TE, Al-Zeyara AM, Eltai NO. Seroprevalence of camel brucellosis in Qatar. Trop Anim Health Prod 2022; 54:351. [PMID: 36261738 PMCID: PMC9581880 DOI: 10.1007/s11250-022-03335-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Accepted: 10/04/2022] [Indexed: 12/14/2022]
Abstract
Brucellosis is a significant zoonotic disease and one of the most common neglected diseases worldwide. It can infect a wide range of domestic and wild animal species. Infected animals are usually culled, causing substantial economic losses to animal owners and the country's economy in general. The disease is endemic among cattle, sheep, and goats in many countries around the Middle East and prevalent in most Gulf Cooperation Council countries, comprising a significant public health risk in the region. This study investigated the seroprevalence of brucellosis among camels in Qatar. Two hundred and forty-eight samples were collected from dromedary camels from 28 farms across the entire country. Each sample was tested for Brucella antibodies with both Rose Bengal and competitive enzyme-linked immunosorbent assay. Only samples that tested positive by both tests were considered seropositive for brucellosis. The overall prevalence was (20.6%, 95% CI, 15.7-26.1). The association between sex and seropositivity was slightly significant (Χ2 = 4.32, P = 0.04), with higher seroprevalence in females. Camels below breeding age (i.e., < 4 years old) showed decreased seropositivity (3.4%, 95% CI, 0.1-17.8), compared to (22.8%, 95% CI, 17.4-29.0) seropositivity in camels ≥ 4 years of age, with a significant association between age groups and seropositivity (P = 0.02). Our results indicate that the seroprevalence of brucellosis in Qatar's camels is alarming, mandating more efforts to control the disease. The findings of this study will aid in selecting better effective measures to control camel brucellosis in Qatar. Further studies need to be conducted on Brucella infection among camels to determine the predisposing risk factors and the steps that should be followed to control brucellosis.
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Affiliation(s)
- Hashim Alhussain
- Biomedical Research Center, Qatar University, P. O. Box 2713, Doha, Qatar
| | - Susu M Zughaier
- College of Medicine, Qatar University, Health, Qatar University, P. O. Box 2713, Doha, Qatar
| | - Ahmed Gawish
- Al Maha for Veterinary & Agriculture Services, Doha, Qatar
| | - Mahmoud H Mahmoud
- Department of Animal Resources, Ministry of Municipality & Environment, Doha, Qatar
| | - Hadi M Yassine
- Biomedical Research Center, Qatar University, P. O. Box 2713, Doha, Qatar
| | - Asmaa Al Thani
- Biomedical Research Center, Qatar University, P. O. Box 2713, Doha, Qatar
| | - Tahra El- Obied
- Department of Human Nutrition, College of Health Sciences, Qatar University, Health, P. O. Box 2713, Doha, Qatar
| | | | - Nahla O Eltai
- Biomedical Research Center, Qatar University, P. O. Box 2713, Doha, Qatar.
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Sakmanoğlu A, Uslu A, Sayın Z, Gölen GS, İlban A, Padron-Perez B, Karyeyen Y, Gök A, Tekindal MA, Erganis O. A one-year descriptive epidemiology of zoonotic abortifacient pathogen bacteria in farm animals in Turkey. Comp Immunol Microbiol Infect Dis 2021; 77:101665. [PMID: 34051649 DOI: 10.1016/j.cimid.2021.101665] [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: 12/17/2020] [Revised: 04/29/2021] [Accepted: 05/03/2021] [Indexed: 10/21/2022]
Abstract
This study aimed to investigate the epidemiology of 10 suspicious pathogenic bacteria in 250 stomach contents of aborted calf, lamb, and goat foetuses in 2019. The 155 positive samples obtained from PCR consisted of 53 (58.88 %) bacteria from 90 lamb samples, 10 (43.47 %) bacteria from 23 goat samples, and 92 (67.15 %) bacteria from 137 calf samples. The five most common bacteria associated with abortions were Brucella melitensis, 52 (20.9 %); B. abortus, 13 (5.2 %); Leptospira spp., 34 (13.6 %); Campylobacter fetus, 52 (20.9 %); and Coxiella burnetii, 4 (1.6 %). The highest rate of B. melitensis (65.4 %), B. abortus (69.2 %), Leptospira spp. (67.6 %), and C. fetus (50 %) was detected in the aborted calf samples. The highest individual rate was that of C. fetus (5.2 %). The flock-herd rates of B. melitensis, B. abortus, Leptospira spp., C. fetus, and C. burnetii infections in the 29 farms studied were 34.48 %, 20.69 %, 62.06 %, 82.75 %, and 3.44 %, respectively, with a confidence level and interval of 95 %. The frequency of abortions caused by Leptospira spp. and Campylobacter fetus may be related to increasing in B. melitensis. The rates of aborted calf, lamb, and goat foetuses among the various sampling periods and regions were significantly (P < 0.01) different. In conclusion, precautions should be applied to reduce the spread of these bacterial agents in high-risk areas and to eliminate the risk of harbouring these zoonotic infections in humans. Therefore, these results must be taken into account in the development of control and protection strategies against abortions in animals.
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Affiliation(s)
- Aslı Sakmanoğlu
- Selcuk University, Department of Microbiology, Faculty of Veterinary Medicine, Konya, Turkey.
| | - Ali Uslu
- Selcuk University, Department of Microbiology, Faculty of Veterinary Medicine, Konya, Turkey.
| | - Zafer Sayın
- Selcuk University, Department of Microbiology, Faculty of Veterinary Medicine, Konya, Turkey.
| | - Gökçenur Sanioğlu Gölen
- Aksaray University, Department of Microbiology, Faculty of Veterinary Medicine, Aksaray, Turkey.
| | - Ayşegül İlban
- Konya Numune Hospital, Department of Microbiology, Konya, Turkey.
| | - Beatriz Padron-Perez
- Selcuk University, Department of Microbiology, Faculty of Veterinary Medicine, Konya, Turkey.
| | - Yasemin Karyeyen
- Selcuk University, Department of Food Technology, Sarayonu Vocational School, Konya, Turkey.
| | - Ayten Gök
- Selcuk University, Department of Microbiology, Faculty of Veterinary Medicine, Konya, Turkey.
| | - Mustafa Agah Tekindal
- Izmir Katip Celebi University, Faculty of Medicine, Department Of Biostatistics And Medical Informatics, İzmir, Turkey.
| | - Osman Erganis
- Selcuk University, Department of Microbiology, Faculty of Veterinary Medicine, Konya, Turkey.
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Arcângelo J, Norte Ramos S, Alves P, Tavares D, Gouveia C. Pyogenic sacroiliitis: Lessons learned from an atypical case series. ANALES DE PEDIATRÍA (ENGLISH EDITION) 2019. [DOI: 10.1016/j.anpede.2018.07.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Arcângelo J, Norte Ramos S, Alves P, Tavares D, Gouveia C. Sacroileítis piógena: Lecciones aprendidas de una serie de casos atípicos. An Pediatr (Barc) 2019; 91:42-46. [DOI: 10.1016/j.anpedi.2018.07.017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Revised: 07/22/2018] [Accepted: 07/30/2018] [Indexed: 10/26/2022] Open
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Baltierra-Uribe SL, Chanona-Pérez JJ, Méndez-Méndez JV, Perea-Flores MDJ, Sánchez-Chávez AC, García-Pérez BE, Moreno-Lafont MC, López-Santiago R. Detection of Brucella abortus by a platform functionalized with protein A and specific antibodies IgG. Microsc Res Tech 2019; 82:586-595. [PMID: 30637865 DOI: 10.1002/jemt.23206] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Revised: 09/29/2018] [Accepted: 12/05/2018] [Indexed: 01/26/2023]
Abstract
Oriented immobilization of antibodies on a sensor surface is critical for enhancing both the antigen-binding capacity and the sensitivity of immunosensors. In this study, we describe a strategy to adsorb immunoglobulin G (IgG) anti-Brucella antibodies onto a silicon surface, oriented by protein A obtained from Staphylococcus aureus (SpA). X-ray photoelectron spectroscopy and atomic force microscopy were used to characterize topographically, morphologically, and chemical changes of the sensor functionalization. The activity of the biosensor was assessed by confocal microscopy, scanning electronic microscopy, and bacteria capture assays (BCA). According to the BCA, the efficiency of Brucella abortus detection with the SpA-IgG anti Brucella biosensor was three-fold higher than that of the random orientated IgG anti Brucella biosensor. The limit of detection was 1 × 106 CFU/ml. These data show that the orientation of antibodies immobilization is crucial to developing immunosensors for bacterial antigen detection as Brucella spp and improve its sensibility level. Functionalization with protein A increases Brucella detection by an antibody-coated surface. Functionalized silicon surface for Brucella detection was characterized by atomic force microscopy, X-ray photoelectron spectroscopy and confocal microscopy.
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Affiliation(s)
| | - José Jorge Chanona-Pérez
- Departamento de Ingeniería Bioquímica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, México City, Mexico
| | | | | | - Anahí Carolina Sánchez-Chávez
- Departamento de Química Orgánica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, México City, Mexico
| | - Blanca Estela García-Pérez
- Departamento de Microbiología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, México City, Mexico
| | - Martha Cecilia Moreno-Lafont
- Departamento de Inmunología. Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, México City, Mexico
| | - Rubén López-Santiago
- Departamento de Inmunología. Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, México City, Mexico
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Lusk Pfefer TS, Timme R, Kase JA. Identification of Brucella genus and eight Brucella species by Luminex bead-based suspension array. Food Microbiol 2018; 70:113-119. [DOI: 10.1016/j.fm.2017.09.015] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2017] [Revised: 09/22/2017] [Accepted: 09/23/2017] [Indexed: 11/25/2022]
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8
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Li M, Zhou X, Li J, Sun L, Chen X, Wang P. Real-time PCR assays for diagnosing brucellar spondylitis using formalin-fixed paraffin-embedded tissues. Medicine (Baltimore) 2018; 97:e0062. [PMID: 29489665 PMCID: PMC5851713 DOI: 10.1097/md.0000000000010062] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
It is difficult to diagnose brucellar spondylitis because of its nonspecific clinical, radiological, and histological characteristics. This study aimed to determine whether real-time polymerase chain reaction (PCR) using formalin-fixed paraffin-embedded (FFPE) tissues was superior to conventional serum-based methods for diagnosing brucellar spondylitis.This retrospective study included 31 patients with brucellosis and a control group of 20 people with no history of brucellosis or exposure to Brucella spp. Samples from all patients with brucellar spondylitis were evaluated using Giemsa staining, the standard tube agglutination (STA) test, blood culture, and real-time PCR.The brucellar spondylitis was acute in 7 patients (22.6%), subacute in 15 patients (48.4%), and chronic in 9 patients (29%). Serological assays provided positive results for 25 patients (80.1%), real-time PCR provided positive results for 29 patients (93.5%), and blood cultures provided positive results for 11 patients (35.5%). The real-time PCR provided sensitivity of 93.5%, specificity of 100%, a positive predictive value of 100%, and a negative predictive value of 100%. The corresponding values for the STA test were 80.1%, 100%, 100%, and 76.9%, respectively. Real-time PCR provided better sensitivity than Giemsa staining, the STA test, and blood culture, although the difference between PCR and STA was not statistically significant (P = .22). B melitensis was the only pathogen that was detected in patient with brucellar spondylitis using real-time PCR.These results suggest that real-time PCR provides a high sensitivity for diagnosing brucellar spondylitis. Furthermore, the real-time PCR results indicate that B melitensis was the causative pathogen in these cases.
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Affiliation(s)
| | | | - Jingjing Li
- Department of Radiology, Beijing Ditan Hospital, Capital Medical University, Chaoyang District, Beijing, China
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High level of B19 strain detection in Brazilian cattle semen. Trop Anim Health Prod 2017; 50:433-439. [PMID: 29082458 DOI: 10.1007/s11250-017-1455-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Accepted: 10/20/2017] [Indexed: 10/18/2022]
Abstract
Semen contaminated with microorganisms can disseminate serious diseases including brucellosis. The objectives of this study were to detect Brucella-specific antibodies and Brucella abortus DNA in samples of blood and fresh semen from 100 animals older than 20 months. The samples were collected on farms and in semen collection and processing centers (CCPS). The serum samples were evaluated by Rose Bengal test (RBT). B. abortus DNA was detected by a polymerase chain reaction (PCR) using BAB and IS771 primers. The difference between the vaccine field strain was identified using ery-1, ery-2, and ery-3 primers, using the hemi-nested PCR method. No anti-B. abortus antibodies were detected in the serum samples. Out of the total semen samples, 68% (68/100) presented amplifications of the B. abortus genes. All (68/68) were identified as B19 strain of Brucella abortus vaccine. It was concluded that even bulls that are seronegative for brucellosis can eliminate the bacteria in the semen. The presence in the DNA of the B19 vaccine strain should be investigated for a better understanding of the epidemiological importance of this strain in these animals.
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