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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: 1.0] [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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Almuzaini AM. An Epidemiological Study of Brucellosis in Different Animal Species from the Al-Qassim Region, Saudi Arabia. Vaccines (Basel) 2023; 11:vaccines11030694. [PMID: 36992277 DOI: 10.3390/vaccines11030694] [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: 12/31/2022] [Revised: 02/15/2023] [Accepted: 03/15/2023] [Indexed: 03/31/2023] Open
Abstract
Brucellosis is a zoonotic bacterial illness that affects humans and a variety of domestic animals, especially ruminants. It is mostly transmitted through the consumption of contaminated drinks, foods, undercooked meat, or unpasteurized milk or contact with infected animals. Therefore, the present study aimed to investigate the seroprevalence of brucellosis in camels, sheep, and goat herds in the Qassim region, Saudi Arabia, using commonly used diagnostic serological procedures such as the Rose Bengal test (RBT), complement fixation test (CFT), and enzyme-linked immunosorbent assay (ELISA). The seroprevalence of brucellosis in camels, sheep, and goats was determined in the selected areas using a cross-sectional study design and a total of 690 farm animals of both sexes of different ages from the three animal species (274 camels, 227 sheep, and 189 goats). According to RBT results, 65 sera were positive for brucellosis, including 15 (5.47%) for camels, 32 (14.09%) for sheep, and 18 (9.50%) for goats. CFT and c-ELISA were performed as confirmatory tests on positive samples resulting from RBT. With c-ELISA, 60 serum samples were confirmed positive, in 14 (5.10%), 30 (13.21%), and 16 (8.46%) camels, sheep, and goats, respectively. There were 59 serum samples confirmed as positive for CFT, including 14 (5.11%), 29 (12.77%), and 16 (8.46%) for camels, sheep, and goats, respectively. Overall, the highest seroprevalence of brucellosis was found in sheep while the least was found in camels from the three tests (RBT, c-ELISA, and CFT). The highest seroprevalence of brucellosis was found in sheep while the least seroprevalence was found in camels. There was also a higher seroprevalence of brucellosis among female animals than males as well as among old animals than young animals. The study, thus, demonstrates brucellosis seroprevalence among farm animals (camels, sheep, and goats) and the significance of intervention measures against brucellosis incidence in both humans and animals through the creation of public awareness and other relevant policy measures such as livestock vaccination, effective hygiene management, and adequate quarantine or serological analysis for newly introduced animals.
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Affiliation(s)
- Abdulaziz M Almuzaini
- Department of Veterinary Medicine, College of Agriculture and Veterinary Medicine, Qassim University, Buraydah 52571, Saudi Arabia
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Dursun AD, Borsa BA, Bayramoglu G, Arica MY, Ozalp VC. Surface plasmon resonance aptasensor for Brucella detection in milk. Talanta 2021; 239:123074. [PMID: 34809985 DOI: 10.1016/j.talanta.2021.123074] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 10/31/2021] [Accepted: 11/15/2021] [Indexed: 01/03/2023]
Abstract
A Surface Plasmon Resonance (SPR) aptasensor was developed for the detection of Brucella melitensis (B. melitensis) in milk samples. Brucellosis is a bacterial zoonotic disease with global distribution caused mostly by contaminated milk or their products. Aptamers recognizing B. melitensis were selected following a whole bacteria-SELEX procedure. Two aptamers were chosen for high affinity and high specificity. The high affinity aptamer (B70 aptamer) was immobilized on the surface of magnetic silica core-shell nanoparticles for initial purification of the target bacteria cells from milk matrix. Another aptamer, highly specific for B. melitensis cells (B46 aptamer), was used to prepare SPR sensor chips for sensitive determination of Brucella in eluted samples from magnetic purification since direct injection of milk samples to SPR sensor chips is known for a high background unspecific signal. Thus, we integrated a quick and efficient magnetic isolation step for subsequent instant detection of B. melitensis contamination in one ml of milk sample by SPR with a LOD value as low as 27 ± 11 cells.
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Affiliation(s)
- Ali D Dursun
- Department of Physiology, School of Medicine, Atilim University, 06830, Ankara, Turkey; Vocational School of Health Services, Atilim University, 06830, Ankara, Turkey
| | - Baris A Borsa
- Linköping University, Molecular Physics and Nanoscience (MOLYT), Nucleic Acids Technology Lab (Nat-Lab), Linköping, Sweden
| | - Gulay Bayramoglu
- Biochemical Processing and Biomaterial Research Laboratory, Gazi University, 06500, Teknikokullar, Ankara, Turkey; Department of Chemistry, Faculty of Sciences, Gazi University, 06500, Teknikokullar, Ankara, Turkey
| | - M Yakup Arica
- Biochemical Processing and Biomaterial Research Laboratory, Gazi University, 06500, Teknikokullar, Ankara, Turkey
| | - Veli C Ozalp
- Department of Biology, Medical School, Atilim University, 06830, Ankara, Turkey.
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Zamanian M, Jahani E, Mahmoudi H. Multiplex PCR Assay for the Simultaneous Detection of the Brucella Genus in Human Whole Blood and Serum. Open Microbiol J 2020. [DOI: 10.2174/1874434602014010242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Background:
Brucellosis disease is a serious zoonosis worldwide and only 17 countries have been recognized as free of brucellosis. The World Health Organization has reported that the incidence of brucellosis is 500,000 cases in a year. Multiplex polymerase chain reaction (PCR) is an ideal method for the identification of brucellosis. The most common primers for the diagnosis of Brucella include B4/B5 and F4/R2. The advantages of multiplex PCR include targeting multiple sequences at the same time, and multiple results are produced in a single test run which saves time and the reagents simultaneously. The purpose of this investigation was to extend and optimize a multiplex PCR for the identification of genus Brucella from serum and whole blood samples.
Methods:
In this experimental and sectional study, blood samples of 25 suspected patients in the acute phase of brucellosis with serum titers higher than 1:80 were collected. Two pairs of specific primers of B4 and B5 the specific gene was amplified. PCR and Multiplex PCR were performed on blood and serum samples.
Results:
Among 25 blood samples, 15 cases (60%) and 9 cases (36%) and among 25 serum samples, 23 cases (92%) and 13 cases (52%) were positive for B4/B5 and F4/R2 in PCR, respectively. In multiplex PCR, among 25 blood samples, 5 cases (20%) showed both bands, 11 cases (44%) showed band 222bp, 4 cases (16%) showed band 905bp and 5 cases (20%) showed no bands. Among 25 serum samples, 6 cases (24%) showed both bands, 15 cases (60%) showed band 222bp, 3 cases (12%) showed band 905bp and 1 case (4%) showed no bands.
Conclusion:
The results of this study show that this multiplex PCR can be used for the diagnosis of brucellosis with high sensitivity in clinical laboratories routinely and it can serve as an alternative substitution for risky culture method and nonspecific serological methods.
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Bazrgari N, Garosi GA, Dadar M, Agricultural Biotechnology Department, Faculty of Engineering and Technology, Imam Khomeini International University, Qazvin, Iran, Agricultural Biotechnology Department, Faculty of Engineering and Technology, Imam Khomeini International University, Qazvin, Iran, Brucellosis Department, Razi vaccine and serum Research Institute (RVSRI), Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran.. Genetic Diversity and Phylogenetic Relationship of Clinical Isolates of Brucella melitensis Based on Gene Polymorphism of β Subunit of RNA Polymerase (rpoB) Gene in Iran. IRANIAN JOURNAL OF MEDICAL MICROBIOLOGY 2020. [DOI: 10.30699/ijmm.14.5.425] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Ishar SM, Parameswaran K, Masduki NS, Rus Din RD. Variations in mitochondrial DNA control region among Malay and Chinese subpopulations (sequence 16000-16200). Mitochondrial DNA A DNA Mapp Seq Anal 2019; 30:843-847. [PMID: 31709874 DOI: 10.1080/24701394.2019.1687693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
DNA variations are alterations found in DNA sequence, occurring in both nuclear DNA and mitochondrial DNA. Variations might differ in individual following population, respectively. The aim of this study was to find variations in target sequence of mtDNA (16000-16200) to be used as marker in Malay and Chinese population. A total of 30 buccal swab samples from 20 Malay and 10 Chinese subjects were collected and preserved on FTA card. The FTA card that contained DNA sample was punched to be included into polymerase chain reaction mixture. Amplification was carried out and the products were sequenced. Sequence variations were found in both Malay and Chinese populations. A total of nine variations (16129, 16108, 16162, 16172, 16148, 16127, 16173, 16099 and 16100) were found in Malay population while a total of seven variations (16129, 16104, 16111, 16109, 16164, 16170 and 16136) were found in Chinese population. Nucleotide position 16129 was found as variation in both Malay and Chinese populations. This study implies that np 16129 can be used as a marker for Malaysian population. For further investigation, the length of the target sequence may be increased to obtain more variations that can be used as markers. This will increase the discrimination power of Malaysian population.
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Affiliation(s)
| | | | | | - Rus Dina Rus Din
- Faculty of Health Sciences, Universiti Kebangsaan Malaysia, Bangi, Malaysia
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Mirnejad R, Jazi FM, Mostafaei S, Sedighi M. Epidemiology of brucellosis in Iran: A comprehensive systematic review and meta-analysis study. Microb Pathog 2017; 109:239-247. [PMID: 28602839 DOI: 10.1016/j.micpath.2017.06.005] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Revised: 06/03/2017] [Accepted: 06/06/2017] [Indexed: 12/30/2022]
Abstract
Brucellosis is still one of the most challenging issues for health and the economy in many developing countries such as Iran. Considering the high prevalence of brucellosis, the aim of the current study was to systematically review published data about the annual incidence rate of this infection from different parts of Iran and provide an overall relative frequency (RF) for Iran using meta-analysis. We searched several databases including PubMed, ISI Web of Science, Scopus, google scholar, IranMedex and Iranian Scientific Information Database (SID) by using the following keywords: "Brucella", "Brucellosis", "Malta fever", "Mediterranean fever", "undulant fever", "zoonosis" and "Iran" in Title/Abstract/Keywords fields. Articles/Abstracts, which used clinical specimens and reported the incidence of brucellosis, were included in this review. Quality of studies was assessed by STROB and PRISMA forms. All statistical analyses were performed using STATA 11.0 (STATA Corp, College Station, TX) and P-values under 0.05 were considered statistically significant. Out of the 8326 results, we found 34 articles suitable, according to inclusion and exlusion criteria, for inclusion in this systematic review and meta-analysis. The pooled incidence of brucellosis was estimated 0.001% (95% confidence interval (CI) = 0.0005-0.0015%) annually. Relative frequency of brucellosis in different studies varied from 7.0/100000 to 276.41/100000 in Qom and Kermanshah provinces, respectively. This systematic-review and meta-analysis study showed that the highest incidences of brucellosis are occurred in west and northwest regions of Iran. Totally, the incidence of the disease in Iran is in the high range.
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Affiliation(s)
- Reza Mirnejad
- Molecular Biology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran.
| | - Faramarz Masjedian Jazi
- Department of Microbiology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran.
| | - Shayan Mostafaei
- Rheumatology Research Center, Tehran University of Medical Sciences, Iran; Department of Biostatistics, School of Medical Sciences, Tarbiat-Modares University, Tehran, Iran.
| | - Mansour Sedighi
- Department of Microbiology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran.
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Mohammadi Azad Z, Moravej H, Fasihi-Ramandi M, Masjedian F, Nazari R, Mirnejad R, Moosazadeh Moghaddam M. In vitro synergistic effects of a short cationic peptide and clinically used antibiotics against drug-resistant isolates of Brucella melitensis. J Med Microbiol 2017; 66:919-926. [DOI: 10.1099/jmm.0.000524] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Affiliation(s)
- Zohreh Mohammadi Azad
- Department Of Microbiology, School Of Basic Science, Qom Branch, Islamic Azad University, Qom, Iran
| | - Hoda Moravej
- Molecular Biology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Mahdi Fasihi-Ramandi
- Molecular Biology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Faramarz Masjedian
- Department of Microbiology, Iran University of Medical Sciences, Tehran, Iran
| | - Raziyeh Nazari
- Department Of Microbiology, School Of Basic Science, Qom Branch, Islamic Azad University, Qom, Iran
| | - Reza Mirnejad
- Molecular Biology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
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9
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Mirnejad R, Jazi FM, Mostafaei S, Sedighi M. Molecular investigation of virulence factors of Brucella melitensis and Brucella abortus strains isolated from clinical and non-clinical samples. Microb Pathog 2017; 109:8-14. [PMID: 28506887 DOI: 10.1016/j.micpath.2017.05.019] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2017] [Revised: 05/06/2017] [Accepted: 05/11/2017] [Indexed: 01/18/2023]
Abstract
Brucella is zoonotic pathogen that induces abortion and sterility in domestic mammals and chronic infections in humans called Malta fever. It is a facultative intracellular potential pathogen with high infectivity. The virulence of Brucella is dependent upon its potential virulence factors such as enzymes and cell envelope associated virulence genes. The aim of this study was to investigate the Brucella virulence factors among strains isolated from humans and animals in different parts of Iran. Seventy eight strains of Brucella species isolated from suspected human and animal cases from several provinces of Iran during 2015-2016 and identified by phenotypic and molecular methods. The multiplex-PCR (M-PCR) assay was performed in order to detect the ure, wbkA, omp19, mviN, manA and perA genes by using gene specific primers. Out of 78 isolates of Brucella spp., 57 (73%) and 21 (27%) isolates were detected as B. melitensis and B. abortus, respectively, by molecular method. The relative frequency of virulence genes ure, wbkA, omp19, mviN, manA and perA were 74.4%, 89.7%, 93.6%, 94.9%, 100% and 92.3%, respectively. Our results indicate that the most of Brucella strains isolated from this region possess high percent of virulence factor genes (ure, wbkA, omp19, mviN, manA and perA) in their genome. So, each step of infection can be mediated by a number of virulence factors and each strain may have a unique combination of these factors that affected the rate of bacterial pathogenesis.
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Affiliation(s)
- Reza Mirnejad
- Molecular Biology Research Center, Baqiyatallah University of Medical Sciences, Tehran, IR Iran.
| | - Faramarz Masjedian Jazi
- Department of Microbiology, School of Medicine, Iran University of Medical Sciences, Tehran, IR Iran.
| | - Shayan Mostafaei
- Researcher in the Rheumatology Research Center, Tehran University of Medical Sciences, IR Iran; Department of Biostatistics, School of Medical Sciences, Tarbiat-Modares University, Tehran, IR Iran.
| | - Mansour Sedighi
- Department of Microbiology, School of Medicine, Iran University of Medical Sciences, Tehran, IR Iran.
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10
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Sikarwar B, Singh VV, Sharma PK, Kumar A, Thavaselvam D, Boopathi M, Singh B, Jaiswal YK. DNA-probe-target interaction based detection of Brucella melitensis by using surface plasmon resonance. Biosens Bioelectron 2016; 87:964-969. [PMID: 27665519 DOI: 10.1016/j.bios.2016.09.063] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2016] [Revised: 09/16/2016] [Accepted: 09/17/2016] [Indexed: 12/20/2022]
Abstract
Surface plasmon resonance (SPR) immunosensor using 4-mercaptobenzoic acid (4-MBA) modified gold (4-MBA/Au) SPR chip was developed first time for the detection of Brucella melitensis (B. melitensis) based on the screening of its complementary DNA target by using two different newly designed DNA probes of IS711 gene. Herein, interaction between DNA probes and target molecule are also investigated and result revealed that the interaction is spontaneous. The kinetics and thermodynamic results derived from the experimental data showed that the interaction between complementary DNA targets and probe 1 is more effective than that of probe 2. Equilibrium dissociation constant (KD) and maximum binding capacity of analyte (Bmax) values for the interaction of complementary DNA target with the immobilized DNA probes were calculated by using kinetic evaluation software, and found to be 15.3 pM (KD) and 81.02m° (Bmax) with probe 1 and 54.9pM and 55.29m° (Bmax), respectively. Moreover, real serum samples analysis were also carried out using immobilized probe 1 and probe 2 with SPR which showed the applicability of this methodology and provides an alternative way for the detection of B. melitensis in less than 10min. This remarkable sensing response of present methodology offer a real time and label free detection of biological warfare agent and provide an opportunity to make miniaturized sensor, indicating considerable promise for diverse environmental, bio-defence, clinical diagnostics, food safety, water and security applications.
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Affiliation(s)
- Bhavna Sikarwar
- Defence Research and Development Establishment, DRDO, Jhansi Road, Gwalior 474002, India
| | - Virendra V Singh
- Defence Research and Development Establishment, DRDO, Jhansi Road, Gwalior 474002, India
| | - Pushpendra K Sharma
- Defence Research and Development Establishment, DRDO, Jhansi Road, Gwalior 474002, India
| | - Ashu Kumar
- Defence Research and Development Establishment, DRDO, Jhansi Road, Gwalior 474002, India
| | | | - Mannan Boopathi
- Defence Research and Development Establishment, DRDO, Jhansi Road, Gwalior 474002, India.
| | - Beer Singh
- Defence Research and Development Establishment, DRDO, Jhansi Road, Gwalior 474002, India
| | - Yogesh K Jaiswal
- School of Studies in Biochemistry, Jiwaji University, Gwalior 474011, India
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Khazaei Z, Najafi A, Piranfar V, Mirnejad R. Microarray-based long oligonucleotides probe designed for Brucella Spp. detection and identification of antibiotic susceptibility pattern. Electron Physician 2016; 8:2297-303. [PMID: 27280008 PMCID: PMC4886574 DOI: 10.19082/2296] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2016] [Accepted: 03/30/2016] [Indexed: 12/05/2022] Open
Abstract
Brucella spp. is a common zoonotic infection referred to as Brucellosis, and it is a serious public health problem around the world. There are currently six classical species (pathogenic species in both animals and humans) within the genus Brucella. The ability and practicality facilitated by a microarray experiment help us to recognize Brucella spp. and its antibiotic resistant gene. Rapid phenotypic determination of antibiotic resistance is not possible by disk diffusion methods. Thus, evaluating antibiotics pattern and Brucella detection appear necessary technique by molecular methods in brucellosis. So, the aim of this study was to design a microarray long oligonucleotides probe and primer for the complete diagnosis of Brucella spp. and obtaining genetic profiles for antibiotic resistance in bacteria at the same time. In this study, we designed 16 antibiotic-resistant gene solid-phase primers with similar melting temperatures of 60 °C and 16 long oligonucleotide probes. These primers and probes can identify tetracycline-, chloramphenicol-, and aminoglycoside-resistant genes, respectively. The design of microarray probes is a versatile process that be done in a wide range of selections. Since the long oligo microarray probes are the best choices for specific diagnosis and definite treatment, this group of probes was designed in the present survey.
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Affiliation(s)
- Zahra Khazaei
- M.Sc. of Biotechnology, Molecular Biology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Ali Najafi
- Ph.D. of Bioinformatic, Assistance Professor, Molecular Biology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Vahhab Piranfar
- M.Sc. of Microbiology, Department of Biology, Tonekabon Branch, Islamic Azad University, Tonekabon, Iran
| | - Reza Mirnejad
- Ph.D. of Medical Bacteriology, Associate Professor, Molecular Biology Research Centre, Baqiyatallah University of Medical Sciences Tehran. Iran
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Molecular Typing of Brucella melitensis and B. abortus from Human Blood Samples Using PCR-RFLP Method. Jundishapur J Microbiol 2013. [DOI: 10.5812/jjm.7197] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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