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Bolzon V, Bulfoni M, Pesando M, Nencioni A, Nencioni E. Verification of a Rapid Analytical Method for the Qualitative Detection of Listeria spp. and Listeria monocytogenes by a Real-Time PCR Assay according to EN UNI ISO 16140-3:2021. Pathogens 2024; 13:141. [PMID: 38392879 PMCID: PMC10892580 DOI: 10.3390/pathogens13020141] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Revised: 01/29/2024] [Accepted: 02/02/2024] [Indexed: 02/25/2024] Open
Abstract
Microbial contamination and foodborne infections are a significant global public health concern. For this reason, the detection, monitoring, and characterization of pathogens represent a significant challenge in quality control settings. Standard approaches, such as culture methods and biochemical tests, are known to be very time-consuming and intensive. Conversely, molecular technologies based on the genomic identification of bacteria are quick and low-cost. Listeria monocytogenes is an opportunistic pathogen and a major concern especially in food industries. It is important to understand and implement multiple quality control measures to control Listeria infection risk and prevent the contamination of products. Standardized detection and confirmation tests such as the API Listeria test, MALDI-TOF MS, and PCR analysis are available. The aim of our work is to provide a specific molecular method, designed according to the EN UNI ISO 16140-3:2021, for the specific detection, monitoring, and characterization of Listeria spp. and Listeria monocytogenes contamination. The verification of this new rapid approach by real-time PCR (qPCR) overcomes the limitations of culture-based techniques, meeting all the verification criteria required by ISO guidelines, including implementation and item confirmation. This system offers a powerful approach to the real-time assessment of food safety, useful for industry self-monitoring and regulatory inspection.
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Affiliation(s)
- Veronica Bolzon
- Biofarma Group Srl, Via Castelliere 2, 33036 Udine, Italy; (V.B.); (M.P.)
| | - Michela Bulfoni
- Department of Medicine, University of Udine, 33100 Udine, Italy;
| | - Massimo Pesando
- Biofarma Group Srl, Via Castelliere 2, 33036 Udine, Italy; (V.B.); (M.P.)
| | - Alessandro Nencioni
- IBSA Institut Biochimique SA, Via del Piano 29, CH-6915 Lugano, Switzerland;
| | - Emanuele Nencioni
- Biofarma Group Srl, Via Castelliere 2, 33036 Udine, Italy; (V.B.); (M.P.)
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Ray A, Pradhan D, Siraj F, Arora R, Rastogi S. MicroRNA mediated regulation of oxidative stress and cytokines in Chlamydia trachomatis-infected recurrent spontaneous abortion: A case-control study. Am J Reprod Immunol 2024; 91:e13821. [PMID: 38374806 DOI: 10.1111/aji.13821] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Revised: 01/29/2024] [Accepted: 01/29/2024] [Indexed: 02/21/2024] Open
Abstract
PROBLEM Increased oxidative stress (OS) and inflammatory responses are major underlying factors behind Chlamydia trachomatis-associated recurrent spontaneous abortion (RSA). miRNAs are known to regulate inflammation and OS and their dysregulation has been associated with compromised pregnancies. Therefore, aim of this study was to investigate the expression/correlation of OS biomarkers, cytokines and miRNAs in C. trachomatis-associated RSA. METHOD OF STUDY Urine and non-heparinized blood samples were collected from RSA patients with history of >3 consecutive abortions (cases) and non-pregnant women with history of >2 successful deliveries (controls) attending Department of Obstetrics and Gynaecology, Safdarjung hospital, New Delhi. C. trachomatis detection was done in urine by PCR. miRNA expression was studied by microarray analysis and validated by real time-PCR. Evaluation of cytokines and antioxidant genes expression were done by real-time PCR. Level of OS biomarkers 8-hydroxy guanosine (8-OHdG) and 8-isporostane (8-IP) were measured by ELISA. RESULTS Fifty circulating miRNAs were differentially expressed in infected patients compared with controls. Of these, four were overexpressed and 46 downregulated. Thirteen differentially expressed circulating miRNAs were selected to validate microarray results. miRs-8069, -3663-3p showed maximum upregulation/downregulation in infected versus control group. Expression of cytokines (IL-8, TNF-α, IFN-γ), antioxidant genes SOD2 and OS biomarkers (8-OHdG,8-IP) were increased while SOD1 was decreased in infected patients. miR-8069 showed significant positive correlation with cytokines, SOD2, 8-OHdG and 8-IP. miR-3663-3p showed significant positive correlation with SOD1. CONCLUSIONS Overall results indicate circulating miRNAs are involved in pathogenesis of C. trachomatis-associated RSA and are potential modulators of cytokine signalling and OS in infected RSA.
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Affiliation(s)
- Ankita Ray
- Molecular Microbiology laboratory, ICMR-National Institute of Pathology, Sriramachari Bhawan, Safdarjung hospital campus, New Delhi, India
| | - Dibyabhaba Pradhan
- ICMR-AIIMS Computational Genomics Centre, Convergence Block, AIIMS, New Delhi, India
| | - Fouzia Siraj
- Pathology Laboratory, ICMR-National Institute of Pathology, Sriramachari Bhawan, Safdarjung Hospital Campus, New Delhi, India
| | - Renu Arora
- Department of Obstetrics and Gynecology, Vardhman Mahavir Medical College (VMMC) and Safdarjung Hospital, New Delhi, India
| | - Sangita Rastogi
- Molecular Microbiology laboratory, ICMR-National Institute of Pathology, Sriramachari Bhawan, Safdarjung hospital campus, New Delhi, India
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Hassan MH, Nassar AY, Meki ARMA, Nasser SA, Bakri AH, Radwan E. Pharmacogenetic study of phosphatase and tensin homolog polymorphism (rs701848) in childhood epilepsy: relation to circulating Wnt signaling. Neurol Res 2024; 46:99-110. [PMID: 37706249 DOI: 10.1080/01616412.2023.2257465] [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: 05/22/2023] [Accepted: 07/30/2023] [Indexed: 09/15/2023]
Abstract
OBJECTIVE The present study aimed at evaluating the potential contribution of Phosphatase and Tensin Homolog (PTEN) and its gene polymorphism (PTEN rs701848 T/C) in relation to Wingless/integrase-1 (Wnt) signaling in childhood epilepsy and the impact of antiepileptic medications on their serum levels. METHODS This study included 100 children with epilepsy (50 pharmacoresistant and 50 pharmacoresponsive) and 50 matched controls. All subjects had their genotypes for the PTEN rs701848T/C polymorphism assessed using TaqManTM assays and real-time PCR. By using the sandwich ELISA technique, the blood concentrations of PTEN and Wnt3a were measured. RESULTS Serum Wnt3a levels in epileptic patients were significantly higher than in the control group, p < 0.001. Children with epilepsy who received oxcarbazepine had considerably lower serum Wnt3a levels than those who didn't, p < 0.001.With an AUC of 0.71, the cutoff value for diagnosing epilepsy as serum Wnt3a > 6.2 ng/mL has a sensitivity of 55% and a specificity of 80%. When compared to controls, epileptic children had considerably more (TT) genotype and less (TC and CC) genotypes, p < 0.05 for all. Epileptic children had significantly higher (T) allele frequency than controls, p = 0.006 with OR (95%CI) = 1.962(1.206-3.192). Pharmacoresistant epileptic children had significantly higher (TT) genotype compared to pharmacoresponsive type (p = 0.020). CONCLUSION We originally found a strong association between PTEN rs701848 T/C and childhood epilepsy, in particular pharmacoresistant type. Serum Wnt3a levels increased in epilepsy, but were not significantly different between different alleles of PTEN. In pharmaco-responsive children Wnt3a levels differed significantly between the different PTEN genotypes. Antiepileptics may affect Wnt3a levels.
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Affiliation(s)
- Mohammed H Hassan
- Department of Medical Biochemistry, Faculty of Medicine, South Valley University, Qena, Egypt
| | - Ahmed Y Nassar
- Department of Medical Biochemistry, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - Abdel-Raheim M A Meki
- Department of Medical Biochemistry, Faculty of Medicine, Assiut University, Assiut, Egypt
- Department of Biochemistry, Sphinx University, New Assiut city, Assiut, Egypt
| | - Shimaa A Nasser
- Department of Biochemistry, Faculty of Pharmacy, South Valley University, Qena, Egypt
| | - Ali Helmi Bakri
- Department of Pediatrics, Faculty of Medicine, South Valley University, Qena, Egypt
| | - Eman Radwan
- Department of Medical Biochemistry, Faculty of Medicine, Assiut University, Assiut, Egypt
- Department of Biochemistry, Sphinx University, New Assiut city, Assiut, Egypt
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Donati F, Natalucci A, Concetti L, de la Torre X, Botrè F. A SNP-based genotyping strategy to detect the abuse of homologous blood transfusion from dried blood spots. Drug Test Anal 2024. [PMID: 38291987 DOI: 10.1002/dta.3650] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 12/28/2023] [Accepted: 01/04/2024] [Indexed: 02/01/2024]
Abstract
We performed genotyping analysis of human biallelic polymorphisms (single nucleotide polymorphisms) for the detection of homologous blood transfusion in sports doping. DNA was extracted from dried blood spots and quantified real-time fast PCR. The method was proven to allow the detection of transfusions up to a donor percentage of 1%, with a significant improvement in terms of sensitivity with respect to both the reference cytofluorimetric method and a previously proposed strategy based on the DNA STR-based strategy.
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Affiliation(s)
- Francesco Donati
- Laboratorio Antidoping, Federazione Medico Sportiva Italiana, Rome, Italy
| | - Alice Natalucci
- Laboratorio Antidoping, Federazione Medico Sportiva Italiana, Rome, Italy
| | - Livia Concetti
- Laboratorio Antidoping, Federazione Medico Sportiva Italiana, Rome, Italy
| | - Xavier de la Torre
- Laboratorio Antidoping, Federazione Medico Sportiva Italiana, Rome, Italy
| | - Francesco Botrè
- Laboratorio Antidoping, Federazione Medico Sportiva Italiana, Rome, Italy
- REDs-Research and Expertise in anti-Doping sciences, ISSUL-Institute of Sport Sciences, University of Lausanne, Lausanne, Switzerland
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Keremane M, Singh K, Ramadugu C, Krueger RR, Skaggs TH. Next Generation Sequencing, and Development of a Pipeline as a Tool for the Detection and Discovery of Citrus Pathogens to Facilitate Safer Germplasm Exchange. Plants (Basel) 2024; 13:411. [PMID: 38337944 PMCID: PMC10856814 DOI: 10.3390/plants13030411] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Revised: 01/23/2024] [Accepted: 01/26/2024] [Indexed: 02/12/2024]
Abstract
Citrus is affected by many diseases, and hence, the movement of citrus propagative materials is highly regulated in the USA. Currently used regulatory pathogen detection methods include biological and laboratory-based technologies, which are time-consuming, expensive, and have many limitations. There is an urgent need to develop alternate, rapid, economical, and reliable testing methods for safe germplasm exchange. Citrus huanglongbing (HLB) has devastated citrus industries leading to an increased need for germplasm exchanges between citrus growing regions for evaluating many potentially valuable hybrids for both HLB resistance and multilocational performance. In the present study, Next-Generation Sequencing (NGS) methods were used to sequence the transcriptomes of 21 test samples, including 15 well-characterized pathogen-positive plants. A workflow was designed in the CLC Genomics Workbench software, v 21.0.5 for bioinformatics analysis of the sequence data for the detection of pathogens. NGS was rapid and found to be a valuable technique for the detection of viral and bacterial pathogens, and for the discovery of new citrus viruses, complementary to the existing array of biological and laboratory assays. Using NGS methods, we detected beet western yellows virus, a newly reported citrus virus, and a variant of the citrus yellow vein-associated virus associated with the "fatal yellows" disease.
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Affiliation(s)
- Manjunath Keremane
- USDA ARS, National Clonal Germplasm Repository for Citrus and Dates, Riverside, CA 92507, USA;
| | - Khushwant Singh
- Department of Botany and Plant Sciences, University of California Riverside, Riverside, CA 92521, USA;
| | - Chandrika Ramadugu
- Department of Botany and Plant Sciences, University of California Riverside, Riverside, CA 92521, USA;
| | - Robert R. Krueger
- USDA ARS, National Clonal Germplasm Repository for Citrus and Dates, Riverside, CA 92507, USA;
| | - Todd H. Skaggs
- USDA ARS, U.S. Salinity Laboratory, Riverside, CA 92507, USA;
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Goksel T, Özgür S, Vardarlı AT, Koç A, Karakuş HS, Özdemir TR, Erdoğan KM, Aldağ C, Veral A, Komurcuoglu B, Gursoy P, Arayici ME, Leblebici A, Yiğitbaşı T, Ellidokuz H, Basbinar Y. Prognostic and predictive role of liquid biopsy in lung cancer patients. Front Oncol 2024; 13:1275525. [PMID: 38304031 PMCID: PMC10830640 DOI: 10.3389/fonc.2023.1275525] [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] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Accepted: 12/26/2023] [Indexed: 02/03/2024] Open
Abstract
Introduction Lung cancer (LC) is a leading cause of cancer-related mortality worldwide. Approximately 80% of LC cases are of the non-small cell lung cancer (NSCLC) type, and approximately two-thirds of these cases are diagnosed in advanced stages. Only systemic treatment methods can be applied to patients in the advanced stages when there is no chance of surgical treatment. Identification of mutations that cause LC is of vital importance in determining appropriate treatment methods. New noninvasive methods are needed to repeat and monitor these molecular analyses. In this regard, liquid biopsy (LB) is the most promising method. This study aimed to determine the effectiveness of LB in detecting EGFR executive gene mutations that cause LC. Methods One hundred forty-six patients in stages IIIB and IV diagnosed with non-squamous cell non-small cell LC were included. Liquid biopsy was performed as a routine procedure in cases where no mutation was detected in solid tissue or in cases with progression after targeted therapy. Liquid biopsy samples were also obtained for the second time from 10 patients who showed progression under the applied treatment. Mutation analyses were performed using the Cobas® EGFR Test, a real-time PCR test designed to detect mutations in exons 18, 20, and 21 and changes in exon 19 of the EGFR gene. Results Mutation positivity in paraffin blocks was 21.9%, whereas it was 32.2% in LB. Solids and LB were compatible in 16 patients. Additionally, while no mutation was found in solid tissue in the evaluation of 27 cases, it was detected in LB. It has been observed that new mutations can be detected not only at the time of diagnosis, but also in LB samples taken during the follow-up period, leading to the determination of targeted therapy. Discussion The results showed that "liquid biopsy" is a successful and alternative non-invasive method for detecting cancer-causing executive mutations, given the limitations of conventional biopsies.
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Affiliation(s)
- Tuncay Goksel
- Department of Pulmonary Medicine, Ege University Faculty of Medicine, Izmir, Türkiye
- EgeSAM-Ege University Translational Pulmonary Research Center, Izmir, Türkiye
| | - Su Özgür
- EgeSAM-Ege University Translational Pulmonary Research Center, Izmir, Türkiye
| | - Aslı Tetik Vardarlı
- EgeSAM-Ege University Translational Pulmonary Research Center, Izmir, Türkiye
- Department of Medical Biology, Ege University Faculty of Medicine, Izmir, Türkiye
| | - Altuğ Koç
- Department of Translational Oncology, Institute of Oncology, Dokuz Eylul University, Izmir, Türkiye
| | - Haydar Soydaner Karakuş
- Department of Pulmonary Medicine, Ege University Faculty of Medicine, Izmir, Türkiye
- EgeSAM-Ege University Translational Pulmonary Research Center, Izmir, Türkiye
| | - Taha Reşid Özdemir
- Department of Medical Genetics, Health Sciences University, Izmir Tepecik Research and Training Hospital, Izmir, Türkiye
| | - Kadri Murat Erdoğan
- Department of Medical Genetics, Health Sciences University, Izmir Tepecik Research and Training Hospital, Izmir, Türkiye
| | - Ceyda Aldağ
- EgeSAM-Ege University Translational Pulmonary Research Center, Izmir, Türkiye
- Department of Biology, Ege University Faculty of Science, Izmir, Türkiye
| | - Ali Veral
- Department of Medical Pathology, Faculty of Medicine, Ege University, Izmir, Türkiye
| | - Berna Komurcuoglu
- Health Sciences University, Dr. Suat Seren Training and Research Hospital of Chest Diseases and Surgery, Izmir, Türkiye
| | - Pınar Gursoy
- Department of Medical Oncology, Faculty of Medicine, Ege University, Izmir, Türkiye
| | - Mehmet Emin Arayici
- Department of Cancer Epidemiology, Institute of Health Sciences, Dokuz Eylul University, Izmir, Türkiye
| | - Asim Leblebici
- Department of Translational Oncology, Institute of Health Sciences, Dokuz Eylul University, Izmir, Türkiye
| | - Türkan Yiğitbaşı
- Department of Medical Biochemistry, Faculty of Medicine, Istanbul Medipol University, Istanbul, Türkiye
| | - Hülya Ellidokuz
- Department of Preventive Oncology, Institute of Oncology, Dokuz Eylul University, Izmir, Türkiye
| | - Yasemin Basbinar
- Department of Translational Oncology, Institute of Oncology, Dokuz Eylul University, Izmir, Türkiye
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Kashyap PL, Kumar S, Kumar RS, Sharma A, Khanna A, Raj S, Jasrotia P, Singh G. Molecular diagnostic assay for pre-harvest detection of Tilletia indica infection in wheat plants. Front Microbiol 2023; 14:1291000. [PMID: 38029161 PMCID: PMC10646428 DOI: 10.3389/fmicb.2023.1291000] [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] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Accepted: 10/13/2023] [Indexed: 12/01/2023] Open
Abstract
The current study describes a new diagnostic method for the rapid and accurate detection of Tilletia indica, the pathogen accountable for causing Karnal bunt (KB) disease in wheat. This method uses quantitative real-time polymerase chain reaction (qPCR) and a primer set derived from glyceraldehyde 3-phosphate dehydrogenase (GAPDH) gene of T. indica to identify the presence of the pathogen. The qPCR assay using this primer set was found highly sensitive, with a limit of detection (LOD) value of 4 pg of T. indica DNA. This level of sensitivity allows for the detection of the pathogen even in cases of different growth stages of wheat, where no visible symptoms of infection on the wheat plants can be seen by naked eyes. The study also validated the qPCR assay on ten different wheat cultivars. Overall, this study presents a valuable molecular tool for rapid, specific and sensitive detection of KB fungus in wheat host. This method has practical applications in disease management, screening of wheat genotypes against KB and can aid in the development of strategies to mitigate the impact of Karnal bunt disease on wheat production.
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Affiliation(s)
- Prem Lal Kashyap
- ICAR-Indian Institute of Wheat and Barley Research (IIWBR), Karnal, India
| | - Sudheer Kumar
- ICAR-Indian Institute of Wheat and Barley Research (IIWBR), Karnal, India
| | | | | | - Annie Khanna
- ICAR-Indian Institute of Wheat and Barley Research (IIWBR), Karnal, India
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Ravaioli S, Campoccia D, Mirzaei R, Mariani V, Bottau G, De Donno A, Montanaro L, Speziale P, Arciola CR. Searching for Virulence Factors among Staphylococcus lugdunensis Isolates from Orthopedic Infections: Correlation of β-hemolysin, hemolysin III, and slush Genes with Hemolytic Activity and Synergistic Hemolytic Activity. Int J Mol Sci 2023; 24:15724. [PMID: 37958706 PMCID: PMC10650139 DOI: 10.3390/ijms242115724] [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: 09/11/2023] [Revised: 10/20/2023] [Accepted: 10/25/2023] [Indexed: 11/15/2023] Open
Abstract
Staphylococcus lugdunensis is an emerging high-virulent pathogen. Here, the presence and expression of virulence genes (icaA, fbl, vwbl, fbpA, slush A, B and C, and genes of the putative β-hemolysin and hemolysin III) and the ability to induce synergistic hemolytic activity and hemolysis after 24, 48 and 72 h were investigated in a collection of twenty-two S. lugdunensis clinical isolates. The collection of isolates, mainly from implant orthopedic infections, had previously been grouped by ribotyping/dendrogram analysis and studied for biofilm matrices, biomasses and antibiotic resistances. Two isolates, constituting a unique small ribogroup sharing the same cluster, exhibited an amplicon size of the slush operon (S. lugdunensis synergistic hemolysin) which was shorter than the expected 977 bp. This outcome can predict the genetic lineage of the S. lugdunensis strains. One isolate (cra1342) presented two deletions: one of 90 bp in slush A and the other of 91 bp in slush B. Another isolate (N860314) showed a single 193 bp deletion, which encompassed part of the slush B terminal sequence and most of slush C. The isolate N860314 was devoid of hemolytic activity after 24 h, and the first consideration was that the deleted region deals with the coding of the active enzymatic site of the slush hemolysin. On the other hand, cra1342 and N860314 isolates with different slush deletions and with hemolytic activity after 24 and 48 h, respectively, could have replaced the hemolytic phenotype through other processes.
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Affiliation(s)
- Stefano Ravaioli
- Laboratorio di Patologia delle Infezioni Associate all’Impianto, IRCCS Istituto Ortopedico Rizzoli, Via di Barbiano 1/10, 40136 Bologna, Italy; (D.C.); (V.M.); (G.B.); (A.D.D.); (L.M.)
| | - Davide Campoccia
- Laboratorio di Patologia delle Infezioni Associate all’Impianto, IRCCS Istituto Ortopedico Rizzoli, Via di Barbiano 1/10, 40136 Bologna, Italy; (D.C.); (V.M.); (G.B.); (A.D.D.); (L.M.)
| | - Rasoul Mirzaei
- Venom and Biotherapeutics Molecules Laboratory, Medical Biotechnology Department, Biotechnology Research Center, Pasteur Institute of Iran, Tehran 1316943551, Iran;
| | - Valentina Mariani
- Laboratorio di Patologia delle Infezioni Associate all’Impianto, IRCCS Istituto Ortopedico Rizzoli, Via di Barbiano 1/10, 40136 Bologna, Italy; (D.C.); (V.M.); (G.B.); (A.D.D.); (L.M.)
| | - Giulia Bottau
- Laboratorio di Patologia delle Infezioni Associate all’Impianto, IRCCS Istituto Ortopedico Rizzoli, Via di Barbiano 1/10, 40136 Bologna, Italy; (D.C.); (V.M.); (G.B.); (A.D.D.); (L.M.)
| | - Andrea De Donno
- Laboratorio di Patologia delle Infezioni Associate all’Impianto, IRCCS Istituto Ortopedico Rizzoli, Via di Barbiano 1/10, 40136 Bologna, Italy; (D.C.); (V.M.); (G.B.); (A.D.D.); (L.M.)
| | - Lucio Montanaro
- Laboratorio di Patologia delle Infezioni Associate all’Impianto, IRCCS Istituto Ortopedico Rizzoli, Via di Barbiano 1/10, 40136 Bologna, Italy; (D.C.); (V.M.); (G.B.); (A.D.D.); (L.M.)
- Laboratory of Immunorheumatology and Tissue Regeneration, Laboratory of Pathology of Implant Infections, IRCCS Istituto Ortopedico Rizzoli, Via di Barbiano 1/10, 40136 Bologna, Italy
| | - Pietro Speziale
- Department of Molecular Medicine, Biochemistry Section, Viale Taramelli 3/b, 27100 Pavia, Italy;
| | - Carla Renata Arciola
- Laboratory of Immunorheumatology and Tissue Regeneration, Laboratory of Pathology of Implant Infections, IRCCS Istituto Ortopedico Rizzoli, Via di Barbiano 1/10, 40136 Bologna, Italy
- Department of Medical and Surgical Sciences (DIMEC), University of Bologna, Via San Giacomo 14, 40126 Bologna, Italy
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Malik C, Dwivedi S, Rabuma T, Kumar R, Singh N, Kumar A, Yogi R, Chhokar V. De novo sequencing, assembly, and characterization of Asparagus racemosus transcriptome and analysis of expression profile of genes involved in the flavonoid biosynthesis pathway. Front Genet 2023; 14:1236517. [PMID: 37745855 PMCID: PMC10513371 DOI: 10.3389/fgene.2023.1236517] [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] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Accepted: 08/10/2023] [Indexed: 09/26/2023] Open
Abstract
Asparagus racemosus is known for its diverse content of secondary metabolites, i.e., saponins, alkaloids, and a wide range of flavonoids. Flavonoids, including phenols and polyphenols, have a significant role in plant physiology and are synthesized in several tissues. Despite the diverse role of flavonoids, genetic information is limited for flavonoid biosynthesis pathways in A. racemosus. The current study explores full-scale functional genomics information of A. racemosus by de novo transcriptome sequencing using Illumina paired-end sequencing technology to elucidate the genes involved in flavonoid biosynthesis pathways. The de novo assembly of high-quality paired-end reads resulted in ∼2.3 million high-quality reads with a pooled transcript of 45,647 comprising ∼76 Mb transcriptome with a mean length (bp) of 1,674 and N50 of 1,868bp. Furthermore, the coding sequence (CDS) prediction analysis from 45,647 pooled transcripts resulted in 45,444 CDS with a total length and mean length of 76,398,686 and 1,674, respectively. The Gene Ontology (GO) analysis resulted in a high number of CDSs assigned to 25,342 GO terms, which grouped the predicted CDS into three main domains, i.e., Biological Process (19,550), Molecular Function (19,873), and Cellular Component (14,577). The Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway database was used to categorize 6,353 CDS into 25 distinct biological pathway categories, in which the majority of mapped CDS were shown to be related to translation (645), followed by signal transduction (532), carbohydrate metabolism (524), folding, sorting, and degradation (522). Among these, only ∼64 and 14 CDSs were found to be involved in the phenylpropanoid and flavonoid biosynthesis pathways, respectively. Quantitative Real-time PCR was used to check the expression profile of fourteen potential flavonoid biosynthesis pathway genes. The qRT-PCR analysis result matches the transcriptome sequence data validating the Illumina sequence results. Moreover, a large number of genes associated with the flavonoids biosynthesis pathway were found to be upregulated under the induction of methyl jasmonate. The present-day study on transcriptome sequence data of A. racemosus can be utilized for characterizing genes involved in flavonoid biosynthesis pathways and for functional genomics analysis in A. racemosus using the reverse genetics approach (CRISPR/Cas9 technology).
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Affiliation(s)
- Chanchal Malik
- Department of Bio and Nano Technology, Guru Jambheshwar University of Science and Technology, Hisar, Haryana, India
| | - Sudhanshu Dwivedi
- Department of Bio and Nano Technology, Guru Jambheshwar University of Science and Technology, Hisar, Haryana, India
| | - Tilahun Rabuma
- Department of Bio and Nano Technology, Guru Jambheshwar University of Science and Technology, Hisar, Haryana, India
- Department of Biotechnology, College of Natural and Computational Science, Wolkite University, Wolkite, Ethiopia
| | - Ravinder Kumar
- Department of Bio and Nano Technology, Guru Jambheshwar University of Science and Technology, Hisar, Haryana, India
| | - Nitesh Singh
- Faculty of Agricultural Sciences, Shree Guru Gobind Singh Tricentenary University, Gurugram, Haryana, India
| | - Anil Kumar
- Department of Bio and Nano Technology, Guru Jambheshwar University of Science and Technology, Hisar, Haryana, India
| | - Rajesh Yogi
- UIBT-Biotechnology, Chandigarh University, Mohali, Punjab, India
| | - Vinod Chhokar
- Department of Bio and Nano Technology, Guru Jambheshwar University of Science and Technology, Hisar, Haryana, India
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Ranjbar R, Zamanzadeh Z, Ahadi AM. Effects of Venlafaxine on the Size of Brain and Expression of SHANK3, TUBB5 and DDC Genes in BALB/c Mice. Psychopharmacol Bull 2023; 53:22-34. [PMID: 37601086 PMCID: PMC10434312] [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] [Subscribe] [Scholar Register] [Indexed: 08/22/2023]
Abstract
Objectives A growing body of evidence has recently suggested that taking venlafaxine during pregnancy may be linked to increased risk of certain congenital defects. The study aimed to address the effects of venlafaxine use during pregnancy on the development of the brain in mice. Experimental design Fourteen female BALB/c mice were randomly divided into two equally-sized groups: venlafaxine-treated and control. After mating, pregnant mice of venlafaxine-treated group were orally received the venlafaxine 35 mg/kg/day throughout pregnancy, while pregnant control mice did not receive any treatment. All pups were killed on postnatal day 21 and brain images were quantified using ImageJ software. The mRNA expression levels of SHANK3, TUBB5 and DDC of genes in pups' brain tissue samples were evaluated using quantitative real-time PCR method. Principal observations The mean brain size of pups was significantly smaller in the venlafaxine-treated group than in the control group. Results showed that the mRNA expression levels of SHANK3 and TUBB5 was significantly downregulated in venlafaxine-treated mice compared to control group. Expression of DDC gene didn't showed significant differences between two groups. Conclusions These results provide evidence that use of venlafaxine during pregnancy may affect the brain development in mice and altered the expression of SHANK3 and TUBB5 genes in brain tissue.
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Affiliation(s)
- Ramesh Ranjbar
- Ranjbar, PhD candidate, Department of Genetics, Faculty of Basic Sciences, Shahrekord Branch, Islamic Azad University, Shahrekord, Iran
| | - Zahra Zamanzadeh
- Zamanzadeh, PhD, Department of Genetics, Faculty of Biological Sciences and Technology, Shahid Ashrafi Esfahani University, Isfahan, Iran
| | - Ali Mohammad Ahadi
- Ahadi, PhD, Department of Genetics, Faculty of Basic Sciences, Shahrekord University, Shahrekord, Iran
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López J, Mogedas M, Ballesteros C, Martín-Maldonado B, Sacristán I, García R, Ortiz JC, Esperón F. Infectious agents present in monk parakeet ( Myiopsitta monachus) and rose-ringed parakeet ( Psittacula krameri) invasive species in the parks of Madrid and Seville, Spain. Front Vet Sci 2023; 10:1162402. [PMID: 37609055 PMCID: PMC10441216 DOI: 10.3389/fvets.2023.1162402] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Accepted: 07/17/2023] [Indexed: 08/24/2023] Open
Abstract
Introduction The introduction of invasive species into an ecosystem could result in biodiversity loss and the spread of infectious agents that could cause re-emergent or emergent zoonotic diseases. Monk parakeets (Myiopsitta monachus) and rose-ringed parakeets (Psittacula krameri) are considered widespread invasive exotic species in urban habitats from the Iberian Peninsula. The aim of this study was to assess the presence of relevant infectious agents in wild parakeets captured in urban parks in Madrid and Seville (Spain). Methods A total of 81 cloacal samples were collected and analysed using molecular techniques. Results The prevalence of infectious agents varied between parakeet species: 9.5% of monk parakeets and 15% of rose-ringed parakeets were positive for enteropathogenic E. coli (EPEC), 13.3% of rose-ringed parakeets for avian influenza virus (AIV), 3.3% of rose-ringed parakeets for Newcastle disease virus (NDV), and a 23.8% of monk parakeets for Chlamydia psittaci. Discussion All C. psittaci-identified isolates were classified as B, E, or E/B genotypes, indicating transmission from wild urban pigeons to parakeets. These results highlight the need for monitoring parakeet populations due to the implications for human and animal health.
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Affiliation(s)
- Juan López
- Veterinary Faculty, Universidad Alfonso X El Sabio Avenida de la Universidad 1, Villanueva de la Cañada, Madrid, Spain
- Servicio de Consultoría para la Recuperación y Ordenación de la Fauna y su Ambiente S. L. (SCROFA), Madrid, Spain
| | - María Mogedas
- Veterinary Faculty, Universidad Alfonso X El Sabio Avenida de la Universidad 1, Villanueva de la Cañada, Madrid, Spain
| | - Carlos Ballesteros
- Servicio de Consultoría para la Recuperación y Ordenación de la Fauna y su Ambiente S. L. (SCROFA), Madrid, Spain
| | - Bárbara Martín-Maldonado
- Servicio de Consultoría para la Recuperación y Ordenación de la Fauna y su Ambiente S. L. (SCROFA), Madrid, Spain
- Veterinary Department, School of Biomedical and Health Sciences, Universidad Europea de Madrid, Villaviciosa de Odón, Madrid, Spain
| | - Irene Sacristán
- Centro de Investigación en Sanidad Animal (SIC-INIA), Valdeolmos, Spain
| | - Raúl García
- Servicio de Consultoría para la Recuperación y Ordenación de la Fauna y su Ambiente S. L. (SCROFA), Madrid, Spain
| | - Juan Carlos Ortiz
- Departamento de Fauna y Biodiversidad, Área de Gobierno de Medio Ambiente, Ayuntamiento de Madrid, Madrid, Spain
| | - Fernando Esperón
- Veterinary Department, School of Biomedical and Health Sciences, Universidad Europea de Madrid, Villaviciosa de Odón, Madrid, Spain
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López LF, Tobón ÁM, Cáceres DH, Chiller T, Litvintseva AP, Gade L, González Á, Gómez BL. Application of Real-Time PCR Assays for the Diagnosis of Histoplasmosis in Human FFPE Tissues Using Three Molecular Targets. J Fungi (Basel) 2023; 9:700. [PMID: 37504689 PMCID: PMC10381543 DOI: 10.3390/jof9070700] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 06/15/2023] [Accepted: 06/19/2023] [Indexed: 07/29/2023] Open
Abstract
Histoplasmosis is a fungal infection caused by the thermally dimorphic fungus Histoplasma capsulatum. This infection causes significant morbidity and mortality in people living with HIV/AIDS, especially in countries with limited resources. Currently used diagnostic tests rely on culture and serology but with some limitations. No molecular assays are commercially available and the results from different reports have been variable. We aimed to evaluate quantitative real-time PCR (qPCR) targeting three protein-coding genes of Histoplasma capsulatum (100-kDa, H and M antigens) for detection of this fungus in formalin-fixed paraffin-embedded (FFPE) samples from patients with proven histoplasmosis. The sensitivity of 100-kDa, H and M qPCR assays were 93.9%, 91% and 57%, respectively. The specificity of 100-kDa qPCR was 93% when compared against samples from patients with other mycoses and other infections, and 100% when samples from patients with non-infectious diseases were used as controls. Our findings demonstrate that real-time PCR assays targeting 100-kDa and H antigen showed the most reliable results and can be successfully used for diagnosing this mycosis when testing FFPE samples.
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Affiliation(s)
- Luisa F López
- Medical and Experimental Mycology Group, Corporación para Investigaciones Biológicas (CIB), Medellín 050034, Colombia
| | - Ángela M Tobón
- Instituto Colombiano de Medicina Tropical, Universidad CES, Medellín 055450, Colombia
| | - Diego H Cáceres
- Medical and Experimental Mycology Group, Corporación para Investigaciones Biológicas (CIB), Medellín 050034, Colombia
- Mycotic Diseases Branch, Centers for Disease Control and Prevention, Atlanta, GA 30333, USA
| | - Tom Chiller
- Mycotic Diseases Branch, Centers for Disease Control and Prevention, Atlanta, GA 30333, USA
| | | | - Lalitha Gade
- Mycotic Diseases Branch, Centers for Disease Control and Prevention, Atlanta, GA 30333, USA
| | - Ángel González
- Basic and Applied Microbiology Research Group (MICROBA), School of Microbiology, Universidad de Antioquia, Medellín 050010, Colombia
| | - Beatriz L Gómez
- Studies in Translational Microbiology and Emerging Diseases (MICROS) Research Group, School of Medicine and Health Sciences, Universidad del Rosario, Bogota 111221, Colombia
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13
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Valente MT, Orzali L, Manetti G, Magnanimi F, Matere A, Bergamaschi V, Grottoli A, Bechini S, Riccioni L, Aragona M. Rapid molecular assay for the evaluation of clove essential oil antifungal activity against wheat common bunt. Front Plant Sci 2023; 14:1130793. [PMID: 37342131 PMCID: PMC10277744 DOI: 10.3389/fpls.2023.1130793] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Accepted: 05/17/2023] [Indexed: 06/22/2023]
Abstract
Common bunt of durum wheat (DW), Triticum turgidum L. ssp. durum (Desf.) Husn., is caused by the two closely related fungal species belonging to Tilletia genus (Tilletiales, Exobasidiomycetes, Ustilaginomycotina): Tilletia laevis Kühn (syn. T. foetida (Wallr.) Liro.) and T. caries (DC) Tul. (syn. T. tritici (Bjerk.) G. Winter). This is one of the most devastating diseases in wheat growing areas worldwide, causing considerable yield loss and reduction of wheat grains and flour quality. For these reasons, a fast, specific, sensitive, and cost-effective method for an early diagnosis of common bunt in wheat seedlings is urgent. Several molecular and serological methods were developed for diagnosis of common bunt in wheat seedlings but at late phenological stages (inflorescence) or based on conventional PCR amplification, with low sensitivity. In this study, a TaqMan Real Time PCR-based assay was developed for rapid diagnosis and quantification of T. laevis in young wheat seedlings, before tillering stage. This method, along with phenotypic analysis, was used to study conditions favoring pathogen infection and to evaluate the effectiveness of clove oil-based seed dressing in controlling the disease. The overall results showed that: i) the Real Time PCR assay was able to quantify T. laevis in young wheat seedlings after seed dressing by clove oil in different formulations, greatly reducing times of analysis. It showed high sensitivity, detecting up to 10 fg of pathogen DNA, specificity and robustness, allowing to directly analyze crude plant extracts and representing a useful tool to speed up the tests of genetic breeding for disease resistance; ii) temperature was a critical point for disease development when using wheat seeds contaminated by T. laevis spores; iii) at least one of the clove oil-based formulations tested was able to efficiently control wheat common bunt, suggesting that clove oil dressing could represent a promising tool for managing the disease, especially in sustainable farming.
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Affiliation(s)
- Maria Teresa Valente
- Council for Agricultural Research and Economics (CREA), Research Centre for Plant Protection and Certification (CREA-DC), Rome, Italy
| | - Laura Orzali
- Council for Agricultural Research and Economics (CREA), Research Centre for Plant Protection and Certification (CREA-DC), Rome, Italy
| | - Giuliano Manetti
- Council for Agricultural Research and Economics (CREA), Research Centre for Plant Protection and Certification (CREA-DC), Rome, Italy
- Department of Environmental Biology, Sapienza University of Rome, Rome, Italy
| | - Francesco Magnanimi
- Council for Agricultural Research and Economics (CREA), Research Centre for Plant Protection and Certification (CREA-DC), Rome, Italy
- Department of Biology and Biotechnology “Charles Darwin”, Sapienza University of Rome, Rome, Italy
| | - Antonio Matere
- Council for Agricultural Research and Economics (CREA), Research Centre for Plant Protection and Certification (CREA-DC), Rome, Italy
| | - Valentino Bergamaschi
- Council for Agricultural Research and Economics (CREA), Research Centre for Plant Protection and Certification (CREA-DC), Rome, Italy
- Department of Environmental Biology, Sapienza University of Rome, Rome, Italy
| | - Alessandro Grottoli
- Council for Agricultural Research and Economics (CREA), Research Centre for Plant Protection and Certification (CREA-DC), Rome, Italy
| | - Sara Bechini
- Council for Agricultural Research and Economics (CREA), Research Centre for Plant Protection and Certification (CREA-DC), Rome, Italy
| | - Luca Riccioni
- Council for Agricultural Research and Economics (CREA), Research Centre for Plant Protection and Certification (CREA-DC), Rome, Italy
| | - Maria Aragona
- Council for Agricultural Research and Economics (CREA), Research Centre for Plant Protection and Certification (CREA-DC), Rome, Italy
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Gajendra S, Jha B, Sharma R. Therapy related AML in a case of chronic lymphocytic leukemia. Am J Blood Res 2023; 13:77-83. [PMID: 37214646 PMCID: PMC10195314] [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] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 03/22/2023] [Indexed: 05/24/2023]
Abstract
In comparison to the general population, patients with chronic lymphocytic leukemia (CLL) are at a higher risk of developing secondary malignancies. Several factors may contribute to pathogenesis, including direct effects of chemotherapy and radiation as well as the reduction of immune surveillance. Factors influencing the increased risk include the increasing age of CLL patients, chronic antigenic stimulation, and immune impairment related to CLL or chemotherapy. Compared to patients with acute myeloid leukemia (AML) that developed from de novo, therapy-related AML (t-AML) has had a poorer outcome. The range of cytogenetic abnormalities in therapy-related AML is comparable to that in de novo AML, although these patients have a significantly higher frequency of unfavourable cytogenetics, such as a complex karyotype or a deletion or loss of chromosomes 5 and/or 7. Herein, we describe a case of therapy-related AML with monocytic differentiation and t(8;16) with a residual CLL population. The aim of the present case is to highlight rare occurrence of therapy related AML with t(8;16) in CLL after fluderabine based chemotherapy (FCR: fludarabine, cyclophosphamide, and rituximab). This case also highlights flowcytometric immunophenotyping as an ideal tool to characterize secondary AML along with the identification of minimal residual disease of CLL clone, which could have ignored at t-AML diagnosis. The pathogenesis of myeloid and lymphoid malignancies as well as their co-existence can be studied by focusing on such patients. Factors predisposing to the development of t-AML should be studied further, which would help in monitoring these patients more carefully.
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Affiliation(s)
- Smeeta Gajendra
- Laboratory Oncology Unit, Dr. B.R.A. IRCH, All India Institute of Medical SciencesNew Delhi 110029, India
| | - Bhawna Jha
- Department of Hematopathology, Medanta-The Medicity HospitalSector 38, Gurgaon 122001, Haryana, India
| | - Rashi Sharma
- Department of Histopathology, Medanta-The Medicity HospitalSector 38, Gurgaon 122001, Haryana, India
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Ripa A, Díaz-Caballero JA, Palacios-González MJ, Zalba J, Espinosa A, García-Zapata JL, Gómez-Martín A, Tkach V, Fernández-Garcia JL. Non-Invasive Wildlife Disease Surveillance Using Real Time PCR Assays: The Case of the Endangered Galemys pyrenaicus Populations from the Central System Mountains (Extremadura, Spain). Animals (Basel) 2023; 13:ani13071136. [PMID: 37048392 PMCID: PMC10093302 DOI: 10.3390/ani13071136] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 03/13/2023] [Accepted: 03/17/2023] [Indexed: 04/14/2023] Open
Abstract
The Iberian desman (Galemys pyrenaicus) is a small semi-aquatic mammal that inhabits mountainous areas from the centre to the north of the Iberian Peninsula and the Pyrenees and is listed as endangered because it has suffered a serious decline. Since 1960, only three species of digeneans (Omphalometra flexuosa, Maritrema pyrenaica and Mathovius galemydis) and two nematodes (Aonchotheca galemydis and Paracuaria hispanica) have been reported from the desman, but no further information on health status and no data from Extremadura has been available. The aim of our study was to characterise the diversity and distribution of parasites and microbiomes of desmans in different areas of the Central System of Extremadura. Between 2019 and 2021 we collected 238 fecal samples and one tissue (intestine) sample that was obtained from a dead desman. DNA templates were processed by commercial or customised real-time PCR using TaqMan probes. Representative data were obtained for Cryptosporidium spp., Omphalometra spp., Eimeria spp., Salmonella spp., Staphylococcus spp. and Leptospira spp. Omphalometra spp. was studied using a newly developed PCR test. The screening of the dead desman allowed us to obtain, for the first time, a partial sequence of the 18SrDNA. This study is the most complete study of the desman, allowing us to identify parasites and the microbiome in populations of G. pyrenaicus using non-invasive sampling.
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Affiliation(s)
- Adriana Ripa
- Genetic and Animal Breeding, Faculty of Veterinary, University of Extremadura, 10071 Cáceres, Spain
| | - José A Díaz-Caballero
- Dirección General Sostenibilidad, Consejería Para la Transición Ecológica y Sostenibilidad, Junta de Extremadura, 06800 Merida, Spain
| | - María Jesús Palacios-González
- Dirección General Sostenibilidad, Consejería Para la Transición Ecológica y Sostenibilidad, Junta de Extremadura, 06800 Merida, Spain
| | - Javier Zalba
- Dirección General Sostenibilidad, Consejería Para la Transición Ecológica y Sostenibilidad, Junta de Extremadura, 06800 Merida, Spain
| | - Antonio Espinosa
- Genetic and Animal Breeding, Faculty of Veterinary, University of Extremadura, 10071 Cáceres, Spain
| | | | - Ana Gómez-Martín
- Genetic and Animal Breeding, Faculty of Veterinary, University of Extremadura, 10071 Cáceres, Spain
| | - Vasyl Tkach
- Department of Biology, University of North Dakota, Grand Forks, ND 58201, USA
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Mareti E, Vavoulidis E, Papanastasiou A, Maretis T, Tsampazis N, Margioula-Siarkou C, Chatzinikolaou F, Giasari S, Nasioutziki M, Daniilidis A, Zepiridis L, Dinas K. Evaluating the potential role of human papilloma virus infection in breast carcinogenesis via real-time polymerase chain reaction analyzes of breast fine needle aspiration samples from Greek patients. Diagn Cytopathol 2023. [PMID: 36939123 DOI: 10.1002/dc.25130] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Accepted: 03/07/2023] [Indexed: 03/21/2023]
Abstract
BACKGROUND Human papilloma virus (HPV), in addition to its known clinical contribution to cervical cancer is probably actively involved in the development of breast tumors in various populations worldwide. Predominant HPV types in breast cancer patients vary geographically. The present study further examines HPV incidence in Greece, based on molecular analysis of clinical cytological samples. METHODS Greek patient fine needle aspiration (FNA) biopsy samples were examined using RT-PCR and immunohistological staining. FNA biopsy samples were collected from 114 female patients, diagnosed between the years 2018 and 2021, 57 with C5 diagnosed breast cancer lesions and 57 diagnosed with benign diseases. RESULTS A total of three different HPV types were identified within the patient sample. HPV-39 was found only in the control group, in 1.8% of patients, while HPV-59 was present in both control and study groups in 1.8% and 3.5% respectively. HPV-16, on the other hand, was present only in the study group in 12.3% of cases. HPV type presence was statistically differentiated between histological groups. HPV-16 was exclusively in IDC, HPV-39 was present in one cyst diagnosed sample and HPV-59 was present in 3 samples that included fibroadenoma, IDC and LN diagnosis. CONCLUSION More international comparative studies are required to investigate population differences and HPV genotype distribution to offer definite answers to the effect that certain HPV types might have a role in breast cancer, as this study also supports, albeit in a cofactory role.
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Affiliation(s)
- Evangelia Mareti
- 2nd Department of Obstetrics and Gynecology, School of Medicine, Aristotle University of Thessaloniki, Hippokration General Hospital, Thessaloniki, Greece.,Laboratory of Gynecologic Oncology, 2nd Department of Obstetrics and Gynecology, School of Medicine, Aristotle University of Thessaloniki, Hippokration General Hospital, Thessaloniki, Greece
| | - Eleftherios Vavoulidis
- 2nd Department of Obstetrics and Gynecology, School of Medicine, Aristotle University of Thessaloniki, Hippokration General Hospital, Thessaloniki, Greece.,Laboratory of Gynecologic Oncology, 2nd Department of Obstetrics and Gynecology, School of Medicine, Aristotle University of Thessaloniki, Hippokration General Hospital, Thessaloniki, Greece
| | - Anastasios Papanastasiou
- 2nd Department of Obstetrics and Gynecology, School of Medicine, Aristotle University of Thessaloniki, Hippokration General Hospital, Thessaloniki, Greece
| | - Theodoros Maretis
- 2nd Department of Obstetrics and Gynecology, School of Medicine, Aristotle University of Thessaloniki, Hippokration General Hospital, Thessaloniki, Greece
| | - Nikolaos Tsampazis
- 2nd Department of Obstetrics and Gynecology, School of Medicine, Aristotle University of Thessaloniki, Hippokration General Hospital, Thessaloniki, Greece.,Laboratory of Gynecologic Oncology, 2nd Department of Obstetrics and Gynecology, School of Medicine, Aristotle University of Thessaloniki, Hippokration General Hospital, Thessaloniki, Greece
| | - Chrysoula Margioula-Siarkou
- 2nd Department of Obstetrics and Gynecology, School of Medicine, Aristotle University of Thessaloniki, Hippokration General Hospital, Thessaloniki, Greece.,Laboratory of Gynecologic Oncology, 2nd Department of Obstetrics and Gynecology, School of Medicine, Aristotle University of Thessaloniki, Hippokration General Hospital, Thessaloniki, Greece
| | - Fotios Chatzinikolaou
- Laboratory of Forensic Medicine and Toxicology, School of Medicine, Faculty of Health Sciences, Aristotle University, Thessaloniki, Greece
| | - Sofia Giasari
- 2nd Department of Obstetrics and Gynecology, School of Medicine, Aristotle University of Thessaloniki, Hippokration General Hospital, Thessaloniki, Greece
| | - Maria Nasioutziki
- 2nd Department of Obstetrics and Gynecology, School of Medicine, Aristotle University of Thessaloniki, Hippokration General Hospital, Thessaloniki, Greece
| | - Angelos Daniilidis
- 2nd Department of Obstetrics and Gynecology, School of Medicine, Aristotle University of Thessaloniki, Hippokration General Hospital, Thessaloniki, Greece.,Laboratory of Gynecologic Oncology, 2nd Department of Obstetrics and Gynecology, School of Medicine, Aristotle University of Thessaloniki, Hippokration General Hospital, Thessaloniki, Greece
| | - Leonidas Zepiridis
- 1st Department of Obstetrics & Gynecology, School of Medicine, Aristotle University of Thessaloniki, Papageorgiou General Hospital, Thessaloniki, Greece
| | - Konstantinos Dinas
- 2nd Department of Obstetrics and Gynecology, School of Medicine, Aristotle University of Thessaloniki, Hippokration General Hospital, Thessaloniki, Greece.,Laboratory of Gynecologic Oncology, 2nd Department of Obstetrics and Gynecology, School of Medicine, Aristotle University of Thessaloniki, Hippokration General Hospital, Thessaloniki, Greece
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Asgharkhah E, Saghaeian Jazi M, Asadi J, Jafari SM. Gene expression pattern of adenosine receptors in lung tumors. Cancer Rep (Hoboken) 2023; 6:e1747. [PMID: 36285419 PMCID: PMC10026311 DOI: 10.1002/cnr2.1747] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Revised: 09/29/2022] [Accepted: 10/13/2022] [Indexed: 11/07/2022] Open
Abstract
BACKGROUND Adenosine, a purine nucleoside, plays an important function in the pathogenesis of cancer through interaction with the cell surface G protein-coupled adenosine receptors. It is important to determine the expression pattern of these receptors in different cancers. Previously in our lab, we found up-regulation of A1 adenosine receptor (AR) in lung tumors playing as a putative target for cancer cell inhibition, and here we aimed to investigate the significance of other adenosine receptor isoforms (A2aAR, A2bAR, and A3AR). METHODS In this study, first of all, we evaluated the adenosine receptors gene expression in the bioinformatics database (GENT2). Then the genes expression was measured experimentally in the 20 lung cancer tumor tissues in comparison to the matched tumor-adjacent normal tissue (as control). The mRNA expression of receptors was evaluated by real-time PCR. The tumors were categorized by the tumor size and the gene expression change was evaluated. RESULTS The experimental results indicated a significant increase in A2aAR (p value = .021) and A3AR (p value = .01) expression in lung tumor tissues compared to the adjacent tumor margins which were in accordant to bioinformatics analysis. We found a non-significant increase in A2bAR expression; however, when comparing the patients according to the tumor size, our data showed that the expression of A2bAR adenosine receptor in patients with smaller lung tumor sizes was higher than the other group (p = .011). CONCLUSION The results of this study showed that adenosine receptors A3AR, and A2aAR are highly expressed in lung tumors relative to tumor-adjacent normal tissue. We suggest that overexpression of adenosine receptors in lung cancer is due to their regulatory role in various aspects of lung cancer.
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Affiliation(s)
- Elnaz Asgharkhah
- Metabolic Disorders Research Center, Golestan University of Medical Sciences, Gorgan, Iran
| | - Marie Saghaeian Jazi
- Metabolic Disorders Research Center, Golestan University of Medical Sciences, Gorgan, Iran
| | - Jahanbakhsh Asadi
- Metabolic Disorders Research Center, Golestan University of Medical Sciences, Gorgan, Iran
| | - Seyyed Mehdi Jafari
- Metabolic Disorders Research Center, Golestan University of Medical Sciences, Gorgan, Iran
- Department of Biochemistry and Biophysics, Faculty of Medicine, Golestan University of Medical Sciences, Gorgan, Iran
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Muteeb G, Aatif M, Farhan M, Alsultan A, Alshoaibi A, Alam MW. Leaves of Moringa oleifera Are Potential Source of Bioactive Compound β-Carotene: Evidence from In Silico and Quantitative Gene Expression Analysis. Molecules 2023; 28. [PMID: 36838566 DOI: 10.3390/molecules28041578] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Revised: 01/31/2023] [Accepted: 02/02/2023] [Indexed: 02/09/2023] Open
Abstract
Moringa oleifera is rich in bioactive compounds such as beta-carotene, which have high nutritional values and antimicrobial applications. Several studies have confirmed that bioactive-compound-based herbal medicines extracted from the leaves, seeds, fruits and shoots of M. oleifera are vital to cure many diseases and infections, and for the healing of wounds. The β-carotene is a naturally occurring bioactive compound encoded by zeta-carotene desaturase (ZDS) and phytoene synthase (PSY) genes. In the current study, computational analyses were performed to identify and characterize ZDS and PSY genes retrieved from Arabidopsis thaliana (as reference) and these were compared with the corresponding genes in M. oleifera, Brassica napus, Brassica rapa, Brassica oleracea and Bixa orellana. The BLAST results revealed that all the plant species considered in this study encode β-carotene genes with 80-100% similarity. The Pfam analysis on β-carotene genes of all the investigated plants confirmed that they belong to the same protein family and domain. Similarly, phylogenetic analysis revealed that β-carotene genes of M. oleifera belong to the same ancestral class. Using the ZDS and PSY genes of Arabidopsis thaliana as a reference, we conducted qRT-PCR analysis on RNA extracted from the leaves of M. oleifera, Brassica napus, Brassica rapa and Bixa orellana. It was noted that the most significant gene expression occurred in the leaves of the studied medicinal plants. We concluded that not only are the leaves of M. oleifera an effective source of bioactive compounds including beta carotene, but also the leaves of Brassica napus, Brassica rapa and Bixa orellana can be employed as antibiotics and antioxidants against bacterial or microbial infections.
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Althurwi HN, Abdel-Rahman RF, Soliman GA, Ogaly HA, Alkholifi FK, Abd-Elsalam RM, Alqasoumi SI, Abdel-Kader MS. Protective Effect of Beta-Carotene against Myeloperoxidase- Mediated Oxidative Stress and Inflammation in Rat Ischemic Brain Injury. Antioxidants (Basel) 2022; 11:antiox11122344. [PMID: 36552554 PMCID: PMC9774247 DOI: 10.3390/antiox11122344] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 11/19/2022] [Accepted: 11/25/2022] [Indexed: 11/29/2022] Open
Abstract
Oxidative stress and inflammatory reaction play critical roles in ischemia/reperfusion (I/R) injury in the brain. β-carotene (βCAR) is a naturally occurring pigment present in fruits and vegetables that expresses antioxidant and anti-inflammatory activities. This study was conducted to investigate the involvement of Bcl2/Bax and NF-κB signaling pathways in the potential protective role of βCAR against brain injury in a middle cerebral artery occlusion (MCAO) rat model. A focal brain ischemia model was created for 2 h, followed by reperfusion. Rats were given 10 and 20 mg/kg of βCAR for 7 days orally before induction of ischemia, at the start of reperfusion, and 3 days after ischemia. Scores of neurological deficit were rated 24 h after induction of ischemia. Motor coordination and spontaneous coordinate activities were assessed using rotarod and activity cage, respectively. After 2 h of the last dose, the animals were killed and their brains were extracted for further examinations. The results of the study show that βCAR diminished the score of neurological deficits and ameliorated motor coordination, balance, and locomotor activity in the I/R control group. Further, βCAR resulted in diminution of malondialdehyde (MDA) and augmentation of reduced glutathione (GSH) contents, as well as the elevation of superoxide dismutase (SOD), glutathione peroxidase (GPx), and catalase (CAT) enzyme activities in the brain homogenates of I/R rats. βCAR treatment significantly reduced nuclear factor kappa B (NF-κB) brain content and myeloperoxidase (MPO) activity and ameliorated the histological alterations in the brain tissues. βCAR significantly suppressed Bcl-2-associated X protein (Bax) and caspase-3 expression, as well as upregulated B-cell lymphoma-2 (Bcl-2) expression, suggesting a neuroprotective potential via downregulating NF-kB and protecting the rat brain against the I/R-associated apoptotic injury.
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Affiliation(s)
- Hassan N. Althurwi
- Department of Pharmacology, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Al-Kharj 11942, Saudi Arabia
| | | | - Gamal A. Soliman
- Department of Pharmacology, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Al-Kharj 11942, Saudi Arabia
- Department of Pharmacology, College of Veterinary Medicine, Cairo University, Giza 12613, Egypt
| | - Hanan A. Ogaly
- Department of Chemistry, College of Science, King Khalid University, Abha 61421, Saudi Arabia
- Department of Biochemistry, College of Veterinary Medicine, Cairo University, Giza 12613, Egypt
| | - Faisal K. Alkholifi
- Department of Pharmacology, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Al-Kharj 11942, Saudi Arabia
| | - Reham M. Abd-Elsalam
- Department of Pathology, College of Veterinary Medicine, Cairo University, Giza 12613, Egypt
- Department of Ecosystem and Public Health, Faculty of Veterinary Medicine, University of Calgary, Calgary, AB T3R 1J3, Canada
| | - Saleh I. Alqasoumi
- Department of Pharmacognosy, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Maged S. Abdel-Kader
- Department of Pharmacognosy, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Al-Kharj 11942, Saudi Arabia
- Department of Pharmacognosy, College of Pharmacy, Alexandria University, Alexandria 21215, Egypt
- Correspondence:
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Bandelj P, Blagus R, Vengušt G, Žele Vengušt D. Wild Carnivore Survey of Echinococcus Species in Slovenia. Animals (Basel) 2022; 12. [PMID: 36077943 DOI: 10.3390/ani12172223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 08/24/2022] [Accepted: 08/26/2022] [Indexed: 11/24/2022] Open
Abstract
Wild carnivores are definitive hosts and potential reservoirs for the tapeworm Echinococcus sp. which can cause cystic and alveolar echinococcosis. Both are considered neglected and important food-borne pandemics. This study is the first to molecularly test Slovenian wild carnivores for Echinococcus species that can cause disease in humans. Fecal samples from 210 red foxes (Vulpes vulpes), 42 wolves (Canis lupus), 39 golden jackals (Canis aureus), 18 martens (Marten sp.), 2 Eurasian lynx (Lynx lynx), 2 European badger (Meles meles), and 1 Eurasian otter (Lutra lutra) were examined for Echinococcus granulosus sensu lato (EGsl: E. granulosus sensu stricto, E. canadensis) and E. multilocularis (EM) using real-time PCR. Red foxes (29.1%) and golden jackals (18%) were positive for EM. All animals examined were negative for EGsl. Univariate analysis showed no significant differences in EM prevalence with respect to animal species (red fox vs., golden jackal) (p = 0.22), age (p = 0.12), and sex (p = 0.18). Prevalence of EM was associated with the region (p < 0.001), with regions in central and southern Slovenia having higher EM prevalence and risk of infection. Due to the increase in population and expansion of habitat, the golden jackal may soon become as important definitive host for EM as the red fox.
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21
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Rocha-Junior MC, Rodrigues ES, Slavov SN, Assone T, Pedreschi M, de La Roque DGL, Sousa M, Olavarria V, Galvão-Castro B, da Fonseca BAL, Penalva de Oliveira AC, Smid J, Takayanagui OM, Casseb J, Covas DT, Kashima S. Rapid and Sensitive Qualitative Duoplex Real-Time PCR Method for Discriminatory and Confirmatory Diagnosis of HTLV-1 and HTLV-2 Infections: Brazilian Multicentric Study. Front Med (Lausanne) 2022; 9:881630. [PMID: 35755037 PMCID: PMC9218175 DOI: 10.3389/fmed.2022.881630] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Accepted: 05/09/2022] [Indexed: 11/13/2022] Open
Abstract
Human T cell lymphotropic virus (HTLV) is the caustive agent of two main conditions i. e., the HTLV-1-associated myelopathy/tropical spastic paraparesis (HAM/TSP) and the adult T-cell leukemia/lymphoma (ATLL). HTLV diagnosis is based on serological and molecular approaches; however, an accurate and validated method is still needed. The objective of this study was to establish a rapid and sensitive molecular test to confirm and discriminate HTLV 1/2 types. The test validation was performed as a multicentric study involving HTLV confirmation centers throughout Brazil. Proviral DNA was extracted from whole blood and the amplification was performed using in-house designed primer and probe sets targeting the pol genomic region. An internal control to validate the extraction and amplification was also included. The limit of detection (LoD) of the assay was four copies/reaction for HTLV-1 and 10.9 copies/reaction for HTLV-2. The diagnostic sensitivity of the platform was 94.6% for HTLV-1, 78.6% for HTLV-2, and the specificity was 100% for both viruses. Cross-reactions of the test with human viruses including HAV, HBV, HCV, HIV-1/2, and parvovirus B19 were not observed. During the multicentric validation, the test was used to screen a total of 692 blood samples obtained from previously confirmed HTLV-positive individuals. From these, 91.1% tested positive being concordant with the previously obtained results. In conclusion, our duoplex-RT-PCR-HTLV1 /2 presented adequate efficiency for HTLV-1/2 differentiation showing high sensitivity and specificity. Therefore, it can be a suitable tool for confirmation of suspected and inconclusive HTLV cases, prenatal and pre-transplant diagnosis, in Brazil and in other countries HTLV-endemic countries.
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Affiliation(s)
- Mauricio Cristiano Rocha-Junior
- Regional Blood Center of Ribeirão Preto, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil.,Graduate Program in Biosciences and Biotechnology, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
| | - Evandra Strazza Rodrigues
- Regional Blood Center of Ribeirão Preto, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil.,Center for Cell-Based Therapy CTC, Regional Blood Center of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
| | - Svetoslav Nanev Slavov
- Regional Blood Center of Ribeirão Preto, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil.,Center for Cell-Based Therapy CTC, Regional Blood Center of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
| | - Tatiane Assone
- Laboratory of Medical Investigation LIM 56, Division of Dermatology, Medical School, University of São Paulo, São Paulo, Brazil
| | - Maíra Pedreschi
- Laboratory of Medical Investigation LIM 56, Division of Dermatology, Medical School, University of São Paulo, São Paulo, Brazil
| | - Debora Glenda Lima de La Roque
- Regional Blood Center of Ribeirão Preto, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil.,Tropical Medicine Center, Federal University of Para, Belém, Brazil
| | - Maisa Sousa
- Tropical Medicine Center, Federal University of Para, Belém, Brazil
| | - Viviana Olavarria
- Centro de HTLV, Escola Bahiana de Medicina e Saúde Pública, Salvador, Brazil
| | | | | | | | - Jerusa Smid
- Laboratory of Medical Investigation LIM 56, Division of Dermatology, Medical School, University of São Paulo, São Paulo, Brazil
| | | | - Jorge Casseb
- Laboratory of Medical Investigation LIM 56, Division of Dermatology, Medical School, University of São Paulo, São Paulo, Brazil
| | - Dimas Tadeu Covas
- Regional Blood Center of Ribeirão Preto, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil.,Center for Cell-Based Therapy CTC, Regional Blood Center of Ribeirão Preto, University of São Paulo, São Paulo, Brazil.,Department of Neurology, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil
| | - Simone Kashima
- Regional Blood Center of Ribeirão Preto, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil.,Graduate Program in Biosciences and Biotechnology, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, São Paulo, Brazil.,Center for Cell-Based Therapy CTC, Regional Blood Center of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
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22
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Kirkland PD, Farrugia B, Frost MJ, Zhang C, Finlaison DS. Multiplexed serotype-specific real time PCR assays - a valuable tool to support large scale surveillance for bluetongue virus infection. Transbound Emerg Dis 2022; 69:e2590-e2601. [PMID: 35621508 DOI: 10.1111/tbed.14604] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Revised: 04/21/2022] [Accepted: 05/23/2022] [Indexed: 11/28/2022]
Abstract
In the last decade, real time PCR has been increasingly adopted for bluetongue diagnosis with both broadly reactive and serotype-specific assays widely used. The use of these assays and nucleic acid sequencing technologies have enhanced bluetongue virus detection, resulting in the identification of a number of new serotypes. As a result, 27 different serotypes are officially recognised and at least 3 more are proposed. Rapid identification of the virus serotype is essential for matching of antigens used in vaccines and to undertake surveillance and epidemiological studies to assist risk management. However, it is not uncommon for multiple serotypes to circulate in a region either concurrently or in successive years. It is therefore necessary to have a large suite of assays available to ensure that the full spectrum of viruses is detected. Nevertheless, covering a large range of virus serotypes is demanding from both a time and resource perspective. To overcome these challenges, real time PCR assays were optimised to match local virus strains and then combined in a panel of quadriplex assays, resulting in 3 assays to detect 12 serotypes directly from blood samples from cattle and sheep. These multiplex assays have been used extensively for bluetongue surveillance in both sentinel animals and opportunistically collected samples. A protocol to adapt these assays to capture variations in local strains of bluetongue virus and to expand the panel is described. Collectively these assays provide powerful tools for surveillance and the rapid identification of bluetongue virus serotypes directly from animal blood samples. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- P D Kirkland
- Virology Laboratory, Elizabeth Macarthur Agriculture Institute, NSW Department of Primary Industries, Woodbridge Rd, Menangle, NSW, 2568, Australia
| | - B Farrugia
- Virology Laboratory, Elizabeth Macarthur Agriculture Institute, NSW Department of Primary Industries, Woodbridge Rd, Menangle, NSW, 2568, Australia
| | - M J Frost
- Virology Laboratory, Elizabeth Macarthur Agriculture Institute, NSW Department of Primary Industries, Woodbridge Rd, Menangle, NSW, 2568, Australia
| | - C Zhang
- Virology Laboratory, Elizabeth Macarthur Agriculture Institute, NSW Department of Primary Industries, Woodbridge Rd, Menangle, NSW, 2568, Australia
| | - D S Finlaison
- Virology Laboratory, Elizabeth Macarthur Agriculture Institute, NSW Department of Primary Industries, Woodbridge Rd, Menangle, NSW, 2568, Australia
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23
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Vesty A, Henderson G, Blakiston M, Chhibber AV, Fox-Lewis A, Roberts S, Basu I. Evaluation of ssrA-targeted real time PCR for the detection of Bartonella species in human clinical samples and reflex sequencing for species-level identification. Pathology 2022:S0031-3025(22)00026-5. [PMID: 35125201 DOI: 10.1016/j.pathol.2021.10.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Revised: 10/14/2021] [Accepted: 10/24/2021] [Indexed: 11/22/2022]
Abstract
The genus Bartonella includes species capable of causing disease in animals and humans. Due to its fastidious nature, direct detection of Bartonella causing human infection relies largely on molecular microbiological methods. Thus, it is imperative that diagnostic assays in use have the ability to detect a range of Bartonella species associated with human disease. In this study, we compared the performance of a real time polymerase chain reaction (PCR) assay targeting the ssrA gene to conventional rpoB-targeted PCR and sequencing for detection and differentiation of Bartonella species in human clinical samples. The real time ssrA PCR performed better for non-Bartonella henselae species, detecting B. clarridgeiae and B. quintana DNA in heart valve specimens that were not detected by rpoB PCR, and improved the sensitivity of B. henselae detection in blood specimens. Our findings suggest the real time ssrA PCR assay is suitable for detection and identification of Bartonella species in human clinical specimens.
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Hole K, Nfon C, Rodriguez LL, Velazquez-Salinas L. A Multiplex Real-Time Reverse Transcription Polymerase Chain Reaction Assay With Enhanced Capacity to Detect Vesicular Stomatitis Viral Lineages of Central American Origin. Front Vet Sci 2022; 8:783198. [PMID: 34988142 PMCID: PMC8720762 DOI: 10.3389/fvets.2021.783198] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2021] [Accepted: 12/01/2021] [Indexed: 11/13/2022] Open
Abstract
Vesicular stomatitis virus (VSV) causes a disease in susceptible livestock that is clinically indistinguishable from foot-and-mouth disease. Rapid testing is therefore critical to identify VSV and rule out FMD. We previously developed and validated a multiplex real-time reverse transcription polymerase chain reaction assay (mRRT-PCR) for detection of both VS New Jersey virus (VSNJV) and VS Indiana virus (VSIV). However, it was subsequently apparent that this assay failed to detect some VSNJV isolates in Mexico, especially in genetic group II, lineage 2.1. In order to enhance the sensitivity of the mRRT-PCR for VSNJV, parts of the assay were redesigned and revalidated using new and improved PCR chemistries. The redesign markedly improved the assay by increasing the VSNJV detection sensitivity of lineage 2.1 and thereby allowing detection of all VSNJV clades. The new assay showed an increased capability to detect VSNJV. Specifically, the new mRRT-PCR detected VSNJV in 100% (87/87) of samples from Mexico in 2006-2007 compared to 74% for the previous mRRT-PCR. Furthermore, the analytical sensitivity of the new mRRT-PCR was enhanced for VSNJV. Importantly, the modified assay had the same sensitivity and specificity for VSIV as the previously published assay. Our results highlight the challenges the large genetic variability of VSV pose for virus detection by mRRT-PCR and show the importance of frequent re-evaluation and validation of diagnostic assays for VSV to ensure high sensitivity and specificity.
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Affiliation(s)
- Kate Hole
- National Centre for Foreign Animal Disease, Canadian Food Inspection Agency, Winnipeg, MB, Canada
| | - Charles Nfon
- National Centre for Foreign Animal Disease, Canadian Food Inspection Agency, Winnipeg, MB, Canada
| | - Luis L Rodriguez
- Foreign Animal Disease Research Unit, Plum Island Animal Disease Center, United States Department of Agriculture-Agricultural Research Service, Greenport, NY, United States
| | - Lauro Velazquez-Salinas
- Foreign Animal Disease Research Unit, Plum Island Animal Disease Center, United States Department of Agriculture-Agricultural Research Service, Greenport, NY, United States
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Kumari S, Mishra S, Husain N, Verma T, Tiwari V, Kaif M, Agarwal A, Rastogi M, Shukla S, Sonkar AA. Comparison of circulating DNA in malignant neoplasia from diverse locations: Investigating a diagnostic role. INDIAN J PATHOL MICR 2022; 65:93-99. [PMID: 35074971 DOI: 10.4103/ijpm.ijpm_474_20] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023] Open
Abstract
CONTEXT Circulating free DNA (cfDNA) analysis has emerged as novel noninvasive diagnostic biomarker in several solid tumors. Raised levels have been reported in several malignancies and may correlate with clinicopathological and treatment response. The current study was designed to assess the diagnostics of cfDNA in different tumor types of malignancies correlating with tumor (T), nodes (N), and metastases (M) stage. DESIGN Serum samples were collected from treatment naïve cases with histologically diagnosed tumors including 23 brain tumors, 48 breasts, 50 gallbladder carcinoma (GBC), 13 lungs, 68 oral squamous cell carcinoma (OSCC), and 25 normal controls. CfDNA was quantified with real-time polymerase chain reaction (PCR), Invasive ductal carcinoma (IDC) using beta-globin gene amplification. Cut off values for diagnostics were calculated using receiver operating curve analysis. RESULTS Contrary to other cfDNA studies where it was postulated that cfDNA would not cross the blood-brain barrier and reach the systemic circulation, we found detectable cfDNA in glioma with median (Q1-Q3) of 349.22 ng/ml (19.87-1276.58). Median cfDNA concentration in breast, gallbladder, lung, oral and normal controls was 328.72 (128.38-624.44), 778.50 (589.88-1864.35), 348.73 (194.67-483.61), 386.27 (47.88-959.67), and 74.12 (49.66-120.00), respectively. Grades I and II glioma had significantly lower levels compared to Grades III and IV (P = 0.0001). Significant difference in median cfDNA values in IDC and GBC was observed with increasing tumor grades, stage, T stage, nodal stage and metastasis and with stage of OSCC cases. CONCLUSION CfDNA levels showed good diagnostic discrimination in glioma, GBC, breast, lung carcinoma, and OSCC. Significant increase in titers was evident with increase in cancer stage from I to IV in breast, GBC and OSCC.
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Affiliation(s)
- Swati Kumari
- Department of Pathology, Dr. Ram Manohar Lohia Institute of Medical Sciences, Vibhuti Khand, Gomti Nagar, India
| | - Sridhar Mishra
- Department of Pathology, Dr. Ram Manohar Lohia Institute of Medical Sciences, Vibhuti Khand, Gomti Nagar, India
| | - Nuzhat Husain
- Department of Pathology, Dr. Ram Manohar Lohia Institute of Medical Sciences, Vibhuti Khand, Gomti Nagar, India
| | - Tripti Verma
- Department of Pathology, Dr. Ram Manohar Lohia Institute of Medical Sciences, Vibhuti Khand, Gomti Nagar, India
| | - Vandana Tiwari
- Department of Pathology, Dr. Ram Manohar Lohia Institute of Medical Sciences, Vibhuti Khand, Gomti Nagar, India
| | - Mohamed Kaif
- Department of Neurosurgery, Dr. Ram Manohar Lohia Institute of Medical Sciences, Vibhuti Khand, Gomti Nagar, India
| | - Akash Agarwal
- Department of Surgical Oncology, Dr. Ram Manohar Lohia Institute of Medical Sciences, Vibhuti Khand, Gomti Nagar, India
| | - Madhup Rastogi
- Department of Radiotherapy,, Dr. Ram Manohar Lohia Institute of Medical Sciences, Vibhuti Khand, Gomti Nagar, India
| | - Saumya Shukla
- Department of Pathology, Dr. Ram Manohar Lohia Institute of Medical Sciences, Vibhuti Khand, Gomti Nagar, India
| | - Abhinav Arun Sonkar
- Department of Surgery, King George's Medical University, Chowk, Lucknow, Uttar Pradesh, India
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DeMarco G, Chargui M, Coulin B, Borner B, Steiger C, Dayer R, Ceroni D. Kingella kingae Osteoarticular Infections Approached through the Prism of the Pediatric Orthopedist. Microorganisms 2021; 10:microorganisms10010025. [PMID: 35056474 PMCID: PMC8778174 DOI: 10.3390/microorganisms10010025] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Revised: 12/15/2021] [Accepted: 12/22/2021] [Indexed: 12/30/2022] Open
Abstract
Nowadays, Kingella kingae (K. kingae) is considered as the main bacterial cause of osteoarticular infections (OAI) in children aged less than 48 months. Next to classical acute hematogenous osteomyelitis and septic arthritis, invasive K. kingae infections can also give rise to atypical osteoarticular infections, such as cellulitis, pyomyositis, bursitis, or tendon sheath infections. Clinically, K. kingae OAI are usually characterized by a mild clinical presentation and by a modest biologic inflammatory response to infection. Most of the time, children with skeletal system infections due to K. kingae would not require invasive surgical procedures, except maybe for excluding pyogenic germs' implication. In addition, K. kingae's OAI respond well even to short antibiotics treatments, and, therefore, the management of these infections requires only short hospitalization, and most of the patients can then be treated safely as outpatients.
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Peris MP, Esteban-Gil A, Ortega-Hernández P, Morales M, Halaihel N, Castillo JA. Comparative Study of Real-Time PCR (TaqMan Probe and Sybr Green), Serological Techniques (ELISA, IFA and DAT) and Clinical Signs Evaluation, for the Diagnosis of Canine Leishmaniasis in Experimentally Infected Dogs. Microorganisms 2021; 9:2627. [PMID: 34946227 PMCID: PMC8704913 DOI: 10.3390/microorganisms9122627] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Revised: 12/17/2021] [Accepted: 12/18/2021] [Indexed: 11/17/2022] Open
Abstract
Canine leishmaniasis (CanL) diagnosis is not fully resolved. Currently, two specific methodologies are in continuous development, the detection of the parasite DNA or RNA in target organs and the detection of specific antibodies against Leishmania sp. For a correct diagnosis, it has been shown that the joint use of this type of test is necessary. In this work, a Sybr Green and a TaqMan Probe based on real time PCRs (qPCR) was performed for the detection of Leishmania sp. in order to correlate the results with clinicopathological and serological evaluations (IFA, ELISA and DAT) to propose an optimal biological sample to be used to detect the parasite in both early and late stages of the infection. A total of four samples were processed: conjunctival swabs, popliteal lymph node aspirates, bone marrow aspirates, and peripheral blood from experimentally infected dogs belonging to a larger study. Our results indicated that a single non-invasive sample (conjunctival swab) and the application of both types of qPCR would be reliable for determining Leishmania infection as well as the disease stage in dogs, thus avoiding bone marrow, lymph node aspirate or blood samples collection.
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Affiliation(s)
- María Paz Peris
- Animal Pathology Department, Veterinary Faculty, University of Zaragoza, 50013 Zaragoza, Spain; (A.E.-G.); (P.O.-H.); (M.M.); (N.H.); (J.A.C.)
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28
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Zhao J, Vendramin N, Cuenca A, Polinski M, Hawley LM, Garver KA. Pan-Piscine Orthoreovirus (PRV) Detection Using Reverse Transcription Quantitative PCR. Pathogens 2021; 10:pathogens10121548. [PMID: 34959503 PMCID: PMC8707331 DOI: 10.3390/pathogens10121548] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 11/22/2021] [Accepted: 11/25/2021] [Indexed: 11/16/2022] Open
Abstract
Piscine orthoreovirus (PRV) infects farmed and wild salmon and trout species in North America, South America, Europe, and East Asia. PRV groups into three distinct genotypes (PRV-1, PRV-2, and PRV-3) that can vary in distribution, host specificity, and/or disease potential. Detection of the virus is currently restricted to genotype specific assays such that surveillance programs require the use of three assays to ensure universal detection of PRV. Consequently, herein, we developed, optimized, and validated a real-time reverse transcription quantitative PCR assay (RT-qPCR) that can detect all known PRV genotypes with high sensitivity and specificity. Targeting a conserved region at the 5′ terminus of the M2 segment, the pan-PRV assay reliably detected all PRV genotypes with as few as five copies of RNA. The assay exclusively amplifies PRV and does not cross-react with other salmonid viruses or salmonid host genomes and can be performed as either a one- or two-step RT-qPCR. The assay is highly reproducible and robust, showing 100% agreement in test results from an inter-laboratory comparison between two laboratories in two countries. Overall, as the assay provides a single test to achieve highly sensitive pan-specific PRV detection, it is suitable for research, diagnostic, and surveillance purposes.
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Affiliation(s)
- Julie Zhao
- Pacific Biological Station, Department of Fisheries and Oceans, Nanaimo, BC V9T 6N7, Canada; (J.Z.); (M.P.); (L.M.H.)
| | - Niccolò Vendramin
- Unit for Fish and Shellfish Diseases, National Institute of Aquatic Resources, Technical University of Denmark, 2800 Lyngby-Taarbæk, Denmark; (N.V.); (A.C.)
| | - Argelia Cuenca
- Unit for Fish and Shellfish Diseases, National Institute of Aquatic Resources, Technical University of Denmark, 2800 Lyngby-Taarbæk, Denmark; (N.V.); (A.C.)
| | - Mark Polinski
- Pacific Biological Station, Department of Fisheries and Oceans, Nanaimo, BC V9T 6N7, Canada; (J.Z.); (M.P.); (L.M.H.)
| | - Laura M. Hawley
- Pacific Biological Station, Department of Fisheries and Oceans, Nanaimo, BC V9T 6N7, Canada; (J.Z.); (M.P.); (L.M.H.)
| | - Kyle A. Garver
- Pacific Biological Station, Department of Fisheries and Oceans, Nanaimo, BC V9T 6N7, Canada; (J.Z.); (M.P.); (L.M.H.)
- Correspondence:
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29
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Shukla A, Gangwar M, Sharma G, Prakash P, Nath G. Vitality of Proteinase K in rRTPCR Detection of SARS-CoV2 Bypassing RNA Extraction. Front Cell Infect Microbiol 2021; 11:717068. [PMID: 34804989 PMCID: PMC8595283 DOI: 10.3389/fcimb.2021.717068] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2021] [Accepted: 09/27/2021] [Indexed: 11/23/2022] Open
Abstract
This study aimed to detect the SARS-COV2 viral component directly from inoculated VTM without RNA extraction. Inoculated VTMs of already tested 50 positive and 50 negative samples were divided into three groups. Group I was treated with Proteinase K (PK) followed by 3-step-heat treatment at different temperatures (25°C, 60°C, and 98°C) and stored at 4°C. Group II was directly subjected to 3-step-heat treatment without PK exposure and stored at 4°C. And group III was set-up as standard group; it was processed using Qiagen's column based QIAamp Nucleic Acid kit and the obtained nucleic acids were stored at 4°C. These stored samples were used as a template to execute real-time polymerase chain reaction, and results were noted. Group I demonstrated 96% and 88% sensitivity for N and ORF1ab genes respectively, whereas group II demonstrated 78% and 60% when compared to the results of standard group III. Overall group I showed better results than group II when compared to group III. Thus, in situations where gold-standard reagents are not available, PK exposure and heat treatment can be employed to carry out molecular detection of SARS-CoV2 viral component.
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Affiliation(s)
- Alka Shukla
- Viral Research and Diagnostic Laboratory, Department of Microbiology, Faculty of Medicine, Institute of Medical Sciences, Banaras Hindu University, Varanasi, India
| | - Mayank Gangwar
- Viral Research and Diagnostic Laboratory, Department of Microbiology, Faculty of Medicine, Institute of Medical Sciences, Banaras Hindu University, Varanasi, India
| | - Gaurav Sharma
- Department of Public Health Dentistry, SriRama Chandra Bhanj Dental College & Hospital, Cuttack, India
| | - Pradyot Prakash
- Viral Research and Diagnostic Laboratory, Department of Microbiology, Faculty of Medicine, Institute of Medical Sciences, Banaras Hindu University, Varanasi, India
| | - Gopal Nath
- Viral Research and Diagnostic Laboratory, Department of Microbiology, Faculty of Medicine, Institute of Medical Sciences, Banaras Hindu University, Varanasi, India
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Dongre VB, Awandkar SP, Salunke VM, Kulkarni MB, Kokate LS, Kale SB, Mugale RR. The investigation on allelic, genotypic frequencies and gene expression study in coding region of tyrosinase gene in Deoni cattle breed of western India. Anim Biotechnol 2021; 34:208-217. [PMID: 34355636 DOI: 10.1080/10495398.2021.1953515] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
An investigation was carried out on Deoni animals of western India to study the allelic and genotypic frequencies in coding region of TYR gene as well as gene expression profile. The animals were grouped according to age, gender, strain and intensity of partial albinism (low, medium and high). The present study revealed that the genotypic frequency of TYR gene across different strains, gender, age group and level of partial albinism was found to be non-significant for both exon-I and exon-II. The AB genotype in Balankya (0.70) was observed highest genotypic frequency followed by Wanera (0.55) and Shewara (0.55) strains. The genotypic frequency of AB and BB genotypes were observed highest in male and female, respectively. In exon-I, genotype frequency of AA genotype was found highest (0.55) in low level of partial albinism. The allelic frequencies in Shewara strain, male and low level of partial albinism were 0.75, 0.63 and 0.73, respectively. However, in exon-II genotype frequency of AB and BB was observed highest (0.70) in Wanera and Balankya strains followed by AA genotype in Shewara (0.50). The highest genotypic frequency of AA (0.87) and BB (0.50) were in male and female, respectively. The genotype frequency of AB genotype was found highest in all level of partial albinism. The allelic frequency was highest (0.85 for B allele) in Wanera strain, male (0.80 for A allele) and high level (0.60 for A allele) of particle albinism. The highly significant (p = 0.002) expression of tyrosinase gene was observed in young animals as compared to adult animals. The TYR gene expression was significantly (p = 0.047) higher in animals with low intensity of partial albinism followed by in the animals with medium and high intensity. Therefore, it is inferred that the TYR gene expression in young animals were high and as compared to the old animals of Deoni cattle breed.
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Affiliation(s)
- Vilas B Dongre
- Subject Matter Specialist (Animal Genetics & Breeding), Cattle Breeding Farm, College of Veterinary and Animal Sciences, Udgir, Maharashtra Animal & Fishery Sciences University, Nagpur, India
| | - Sudhakar P Awandkar
- Department of Veterinary Microbiology, College of Veterinary & Animal Sciences, Udgir, Maharashtra Animal & Fishery Science University, Nagpur, Maharashtra, India
| | - Vishwas M Salunke
- Cattle Breeding Farm, College of Veterinary & Animal Sciences, Udgir, Maharashtra Animal & Fishery Science University, Nagpur, Maharashtra, India
| | - Mahesh B Kulkarni
- Department of Veterinary Microbiology, College of Veterinary & Animal Sciences, Udgir, Maharashtra Animal & Fishery Science University, Nagpur, Maharashtra, India
| | - Laxmikant S Kokate
- MAFSU Sub-Centre, College of Veterinary & Animal Sciences, Udgir, Maharashtra Animal & Fishery Science University, Nagpur, Maharashtra, India
| | - Shyam B Kale
- MAFSU Sub-Centre, College of Veterinary & Animal Sciences, Udgir, Maharashtra Animal & Fishery Science University, Nagpur, Maharashtra, India
| | - Ravji R Mugale
- Associate Dean, College of Veterinary & Animal Sciences, Udgir, Maharashtra Animal & Fishery Science University, Nagpur, Maharashtra, India
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ALrefai A, Dawood A, Shehata W, Elhelbawy M, Elhelbawy N. Evaluation of NLRP3 (rs10754558) and PTPN22 (1858C/T) (rs2476601) Functional Polymorphisms in Psoriasis Susceptibility in Egypt. Appl Clin Genet 2021; 14:331-339. [PMID: 34345180 PMCID: PMC8324977 DOI: 10.2147/tacg.s319065] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Accepted: 07/08/2021] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Psoriasis is a complex autoimmune multifactorial disease induced by interaction of environmental and genetic factors. This research aimed to clarify the association of NLRP3 (rs10754558) and PTPN22 (1858C/T) (rs2476601) polymorphisms with susceptibility to psoriasis. METHODS This case-control study involved 150 patients diagnosed with psoriasis and 100 age- and gender-matched apparently healthy individuals. NLRP3 (rs10754558) polymorphism was done by real time PCR and PTPN22 1858C/T (rs2476601) genotype was identified by tetra-primer amplification refractory mutation system-polymerase chain reaction (PCR) method. RESULTS The genotypes distribution of NLRP3 (rs10754558) were significantly associated with psoriasis (p<0.0001). Whereas for PTPN22 (1858C/T) (rs2476601), no significance was found (p=0.09). NLRP3 (rs10754558) GC genotype revealed a significant association with psoriasis (p<0.0001), mainly among male (p=0.004) patients with mild psoriasis (p=0.001) and affected extremities (p=0.0001). CONCLUSION We can conclude that the NLRP3 (rs10754558) GC genotype may play a role in psoriasis susceptibility among male Egyptian populations with affected extremities. Future studies must evaluate its role in the prevention or the treatment of psoriasis.
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Affiliation(s)
- Abeer ALrefai
- Medical Biochemistry and Molecular Biology Department, Faculty of Medicine, Menoufia University, Shebin Elkom City, Egypt
- Biochemistry Department, Faculty of Medicine, Umm Al-Qura University, Makah City, Saudi Arabia
| | - Ashraf Dawood
- Medical Biochemistry and Molecular Biology Department, Faculty of Medicine, Menoufia University, Shebin Elkom City, Egypt
| | - Wafaa Shehata
- Dermatology, Andrology & Sexually Transmitted Diseases (STDs) Department, Faculty of Medicine, Menoufia University, Shebin Elkom City, Egypt
| | - Mohammed Elhelbawy
- Clinical Pathology Department, Faculty of Medicine, Menoufia University, Shebin Elkom City, Egypt
| | - Nesreen Elhelbawy
- Medical Biochemistry and Molecular Biology Department, Faculty of Medicine, Menoufia University, Shebin Elkom City, Egypt
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Sazed SA, Kibria MG, Alam MS. An Optimized Real-Time qPCR Method for the Effective Detection of Human Malaria Infections. Diagnostics (Basel) 2021; 11:736. [PMID: 33919020 PMCID: PMC8142979 DOI: 10.3390/diagnostics11050736] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Revised: 04/01/2021] [Accepted: 04/02/2021] [Indexed: 11/24/2022] Open
Abstract
Polymerase chain reaction, although an expensive method for the detection of human Plasmodium spp., is still considered the finest for the diagnosis of malaria. The conventional diagnostic PCR is an inexpensive process but consumes a lot of time, reagents and lacks sensitivity. On the other hand, real-time PCR assays currently being used are mostly probe-based expensive methods and sometimes not feasible to detect all the species in a single amplification reaction condition. Here we have established a real-time PCR method that is time and cost effective with a single protocol to detect and distinguish five human Plasmodium species using the existing primers efficiently. The primers used here are being used in the conventional method and the sensitivity as well as specificity of this method has also been immensely improved (100%). The lower limit of detection for Plasmodium falciparum, Plasmodium vivax and Plasmodium malariae are 0.064 parasites/µL, 1.6 parasites/µL, and 0.32 parasites/µL respectively and no cross reactivity was observed. Besides, we have analyzed melt curves that can be used for further species confirmation and validation purposes using multiplex systems. This method, therefore, can be considered as an alternative to the existing lineup for molecular diagnosis of malaria in endemic countries.
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Affiliation(s)
| | | | - Mohammad Shafiul Alam
- Infectious Diseases Division, International Centre for Diarrheal Diseases Research, Bangladesh Mohakhali, Dhaka 1212, Bangladesh; (S.A.S.); (M.G.K.)
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Labrador M, Giménez-Rota C, Rota C. Real-Time PCR Method Combined with a Matrix Lysis Procedure for the Quantification of Listeria monocytogenes in Meat Products. Foods 2021; 10:foods10040735. [PMID: 33808357 PMCID: PMC8066123 DOI: 10.3390/foods10040735] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 03/24/2021] [Accepted: 03/25/2021] [Indexed: 11/16/2022] Open
Abstract
In this study a real-time PCR method has been developed for the specific quantification of the foodborne pathogen Listeria monocytogenes on meat products through the gene hlyA. The PCR was combined with a matrix lysis that allowed the obtaining of the microorganisms without sample dilution and the elimination the PCR inhibitors from dry-cured ham. The qPCR method calibration curve had an efficiency of 100.4%, limits of detection and quantification were 30.1 ± 6.2 CFU/g which is under the legal limit of L. monocytogenes in ready-to-eat products, and an analytical variability <0.25 log hlyA gene copies/reaction. The analysis was performed simultaneously with the reference method ISO 11290-2. The comparison of the qPCR-matrix lysis results with the reference method showed an excellent correspondence, with a relative accuracy between 95.83-105.20%. Finally, the method was applied to commercial derived meat samples and the pathogen was quantified in one of the commercial samples assayed in 69.1 ± 13.9 CFU/g while the reference method did not quantify it. The optimized qPCR showed higher precision and sensitivity than the reference method at low concentrations of the microorganism in a shorter time. Therefore, qPCR-matrix lysis shows a potential application in the meat industry for L. monocytogenes routine control.
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Affiliation(s)
- Mirian Labrador
- Departamento de Producción Animal y Ciencia de los Alimentos, Facultad de Veterinaria, Instituto Agroalimentario de Aragón -IA2-, Universidad de Zaragoza-CITA, C/Miguel Servet 177, 50013 Zaragoza, Spain;
| | - Carlota Giménez-Rota
- Facultad de Farmacia, Universidad Complutense de Madrid, Plaza Ramón y Cajal s/n, 28040 Madrid, Spain;
| | - Carmen Rota
- Departamento de Producción Animal y Ciencia de los Alimentos, Facultad de Veterinaria, Instituto Agroalimentario de Aragón -IA2-, Universidad de Zaragoza-CITA, C/Miguel Servet 177, 50013 Zaragoza, Spain;
- Correspondence: ; Tel.: +34-87-655-4144
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Chang LJ, Hsiao CJ, Chen B, Liu TY, Ding J, Hsu WT, Su-Ortiz V, Chen ST, Su KY, Wu HP, Lee CC. Accuracy and comparison of two rapid multiplex PCR tests for gastroenteritis pathogens: a systematic review and meta-analysis. BMJ Open Gastroenterol 2021; 8:bmjgast-2020-000553. [PMID: 33648983 PMCID: PMC7925250 DOI: 10.1136/bmjgast-2020-000553] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 01/07/2021] [Accepted: 01/13/2021] [Indexed: 12/19/2022] Open
Abstract
Objectives The primary aim is to provide a summary of evidence for the diagnostic accuracies of multiplex PCR gastrointestinal (GI) panels—BioFire FilmArray and Luminex xTAG on the detection of gastroenteritis pathogens. The secondary aim is to compare the performance of these GI panels head to head. Methods A comprehensive search up to 1 December 2019 was conducted on PubMed, Embase, Ovid Medline and Web of Science for studies that used FilmArray or Luminex xTAG Gastrointestinal Pathogen Panel (GPP) for diagnosis of acute gastroenteritis. A summary of diagnostic accuracies for the 16 pathogens were calculated by comparing the GI panels to the current gold standards (conventional standard microbiology techniques such as culture or PCR for bacteria, PCR or enzyme immunoassay (EIA) for viruses, microscopy or EIA for parasite). Hierarchical summary receiver operating characteristic (HSROC) curve analysis, pretest and post-test probabilities were used for estimating the pathogen detection performance. Results A total of 11 studies with 7085 stool samples were eligible for analysis. Multiplex PCRs demonstrated high diagnostic accuracy, with specificity ≧0.98 and area under the ROC curve (AUROC) ≧0.97 for all the pathogens except for Yersinia enterocolitica (AUROC 0.91). The FilmArray panel demonstrated a higher sensitivity than xTAG GPP for most of the pathogens with the exception of Rotavirus A (xTAG GPP and FilmArray were both 0.93). Conclusions This is the first meta-analysis that is a head-to-head comparison examining the performance of the novel multiplex PCR-based tests Luminex xTAG GPP and FilmArray GI panel in detecting each pathogen. Point estimates calculated from eligible studies showed that both GI panels are highly accurate and may provide important diagnostic information for early identification of gastroenteritis. In addition, although FilmArray has higher sensitivity and post-test probability than xTAG GPP for most of the pathogens, how this will translate to a clinical setting remains unclear.
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Affiliation(s)
- Li-Jun Chang
- Department of Medical Education, National Taiwan University Hospital, Taipei, Taiwan
| | - Chun-Jen Hsiao
- Department of Medical Education, National Taiwan University Hospital, Taipei, Taiwan
| | - Bing Chen
- Department of Medicine, Mount Sinai Morningside Hospital, New York, New York, USA
| | - Tzu-Yu Liu
- Department of Medicine, Brown University Warren Alpert Medical School, Providence, Rhode Island, USA
| | - Julia Ding
- Internal Medicine, Brown University Division of Biology and Medicine, Providence, Rhode Island, USA
| | - Wan-Ting Hsu
- Department of Epidemiology, Harvard University T H Chan School of Public Health, Boston, Massachusetts, USA.,Medical Wizdom, LLC, Brooklinw, MA, USA
| | - Victor Su-Ortiz
- Department of Medical Engineering, College of Engineering, Cornell University, Ithaca, New York, USA.,Department of Computer Science, College of Engineering, Cornell University, Ithaca, NY, USA
| | - Szu-Ta Chen
- Department of Epidemiology, Harvard University T H Chan School of Public Health, Boston, Massachusetts, USA
| | - Ke-Ying Su
- Department of Emergency Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Han-Ping Wu
- Department of Pediatric Emergency Medicine and Medical Research, China Medical University Children's Hospital, Taichung, Taiwan.,Department of Medicine, School of Medicine, China Medical University, Taichung, Taiwan
| | - Chien-Chang Lee
- Department of Emergency Medicine, National Taiwan University Hospital, Taipei, Taiwan .,Center of Intelligent Healthcare, National Taiwan University Hospital, Taipei, Taiwan.,Byers Center for Biodesign, Stanford University, Stanford, CA, USA
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Madrid R, García-García A, Cabrera P, González I, Martín R, García T. Survey of Commercial Food Products for Detection of Walnut ( Juglans regia) by Two ELISA Methods and Real Time PCR. Foods 2021; 10:foods10020440. [PMID: 33671390 PMCID: PMC7922217 DOI: 10.3390/foods10020440] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 02/09/2021] [Accepted: 02/12/2021] [Indexed: 12/22/2022] Open
Abstract
Labeling of food allergens in accordance with legal regulations is important to protect the health of allergic consumers. The requirements for detecting allergens in foods involve adequate specificity and sensitivity to identify very small amounts of the target allergens in complex food matrices and processed foods. In this work, one hundred commercial samples were analyzed for walnut detection using three different methods: a sandwich enzyme-linked immunosorbent assay (ELISA) kit based on polyclonal antibodies, a direct ELISA using a recombinant multimeric scFv, and a real time PCR. The most sensitive method was real time PCR followed by sandwich ELISA kit and multimeric scFv ELISA. There was agreement between the three methods for walnut detection in commercial products, except for some heat-treated samples or those that contained pecan. The walnut ELISA kit was less affected by sample processing than was the multimeric scFv ELISA, but there was cross-reactivity with pecan, producing some false positives that must be confirmed by real time PCR. According to the results obtained, 7.0 to 12.6% of samples (depending on the analytical method) contained walnut but did not declare it, confirming there is a risk for allergic consumers. Moreover, there was one sample (3.7%) labelled as containing walnut but that tested negative for this tree nut. Genetic and immunoenzymatic techniques offer complementary approaches to develop a reliable verification for walnut allergen labeling.
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Bottari F, Iacobone AD, Radice D, Preti EP, Preti M, Franchi D, Piana AF, Sandri MT, Passerini R. Anyplex II HPV test in detection and follow-up after surgical treatment of CIN2+ lesions. J Med Virol 2021; 93:6340-6346. [PMID: 33565607 DOI: 10.1002/jmv.26862] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 01/15/2021] [Accepted: 02/04/2021] [Indexed: 11/09/2022]
Abstract
Human papillomavirus (HPV) tests differ for technology, targets, and information on the genotype and viral load. In this study, we evaluated the performance of the Seegene Anyplex II HPV HR (Anyplex) assay in the detection of cervical intraepithelial lesions (CIN) and as a test-of-cure in the follow-up after surgical treatment. One hundred and sixty-seven women referred to the European Institute of Oncology, Milan, for surgical treatment of CIN2+ were enrolled. A cervical sample was taken before treatment and at the first follow-up visit: on these samples, Qiagen Hybrid Capture 2 (HC2), Roche Linear Array HPV Test (Linear Array), cytology and histology were performed at baseline, HC2, and cytology at follow-up. Anyplex genotyping HPV test was performed on a post aliquot from liquid-based cytology specimens when available. The concordance between Anyplex and HC2 was 93.6% at baseline and 76.7% at follow-up (3-9 months after treatment), respectively. The concordance between Anyplex and Linear Array was evaluable only at baseline (92.9%). No recurrence occurred in women without the persistence of the same genotype at follow-up. Seven women relapsed: six had persistence of the same genotypes (five HPV16, one HPV33, and one HPV39), while one tested negative not only with Anyplex but also with HC2 for the persistence of low-risk genotype infection (HPV73 only detected by Linear Array). Anyplex test represents a valid option for HPV detection and genotyping in order to stratify women at risk of high-grade lesions at baseline and to monitor patients treated for CIN2+ lesions during follow-up.
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Affiliation(s)
- Fabio Bottari
- Division of Laboratory Medicine, European Institute of Oncology IRCCS, Milan, Italy.,Department of Biomedical Sciences, University of Sassari, Sassari, Italy
| | - Anna Daniela Iacobone
- Department of Biomedical Sciences, University of Sassari, Sassari, Italy.,Preventive Gynecology Unit, European Institute of Oncology IRCCS, Milan, Italy
| | - Davide Radice
- Division of Epidemiology and Biostatistics, European Institute of Oncology IRCCS, Milan, Italy
| | | | - Mario Preti
- Department of Obstetrics and Gynecology, University of Torino, Turin, Italy
| | - Dorella Franchi
- Preventive Gynecology Unit, European Institute of Oncology IRCCS, Milan, Italy
| | - Andrea Fausto Piana
- Department of Medical, Surgical and Experimental Sciences, University of Sassari, Sassari, Italy
| | | | - Rita Passerini
- Division of Laboratory Medicine, European Institute of Oncology IRCCS, Milan, Italy
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Kuchipudi SV, Surendran Nair M, Yon M, Gontu A, Nissly RH, Barry R, Greenawalt D, Pierre T, Li L, Thirumalapura N, Tewari D, Jayarao B. A Novel Real-Time PCR Assay for the Rapid Detection of Virulent Streptococcus equi Subspecies zooepidemicus-An Emerging Pathogen of Swine. Front Vet Sci 2021; 8:604675. [PMID: 33644143 PMCID: PMC7907462 DOI: 10.3389/fvets.2021.604675] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Accepted: 01/20/2021] [Indexed: 12/03/2022] Open
Abstract
Streptococcus equi subspecies zooepidemicus, a zoonotic bacterial pathogen caused a series of outbreaks with high mortality affecting swine herds in multiple locations of the USA and Canada in 2019. Further genetic analysis revealed that this agent clustered with ATCC 35246, a S. zooepidemicus strain associated with high mortality outbreaks in swine herds of China originally reported in 1977. Rapid and accurate diagnosis is absolutely critical for controlling and limiting further spread of this emerging disease of swine. Currently available diagnostic methods including bacteriological examination and PCR assays do not distinguish between the virulent strains and avirulent commensal strains of S. zooepidemicus, which is critical given that this pathogen is a normal inhabitant of the swine respiratory tract. Based on comparative analyses of whole genome sequences of the virulent isolates and avirulent sequences, we identified a region in the SzM gene that is highly conserved and restricted to virulent S. zooepidemicus strains. We developed and validated a novel probe-based real-time PCR targeting the conserved region of SzM. The assay was highly sensitive and specific to the virulent swine isolates of Streptococcus equi subspecies zooepidemicus. No cross reactivity was observed with avirulent S. zooepidemicus isolates as well as other streptococcal species and a panel of porcine respiratory bacterial and viral pathogens. The PCR efficiency of the assay was 96.64 % and was able to detect as little as 20 fg of the bacterial DNA. We then validated the diagnostic sensitivity and specificity of the new PCR assay using a panel of clinical samples (n = 57) and found that the assay has 100% sensitivity and specificity as compared to bacteriological culture method. In summary, the PCR assay will be an extremely valuable tool for the rapid accurate detection of virulent swine S. zooepidemicus isolates and directly from clinical samples.
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Affiliation(s)
- Suresh V Kuchipudi
- Animal Diagnostic Laboratory, Pennsylvania State University, Wiley Lane, University Park, PA, United States.,Center for Infectious Disease Dynamics, Pennsylvania State University, University Park, PA, United States
| | - Meera Surendran Nair
- Animal Diagnostic Laboratory, Pennsylvania State University, Wiley Lane, University Park, PA, United States
| | - Michele Yon
- Animal Diagnostic Laboratory, Pennsylvania State University, Wiley Lane, University Park, PA, United States
| | - Abhinay Gontu
- Animal Diagnostic Laboratory, Pennsylvania State University, Wiley Lane, University Park, PA, United States
| | - Ruth H Nissly
- Animal Diagnostic Laboratory, Pennsylvania State University, Wiley Lane, University Park, PA, United States
| | - Rhiannon Barry
- Animal Diagnostic Laboratory, Pennsylvania State University, Wiley Lane, University Park, PA, United States
| | - Denver Greenawalt
- Animal Diagnostic Laboratory, Pennsylvania State University, Wiley Lane, University Park, PA, United States
| | - Traci Pierre
- Animal Diagnostic Laboratory, Pennsylvania State University, Wiley Lane, University Park, PA, United States
| | - Lingling Li
- Animal Diagnostic Laboratory, Pennsylvania State University, Wiley Lane, University Park, PA, United States
| | | | - Deepanker Tewari
- Pennsylvania Veterinary Laboratory, Harrisburg, PA, United States
| | - Bhushan Jayarao
- Animal Diagnostic Laboratory, Pennsylvania State University, Wiley Lane, University Park, PA, United States
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Bonelli P, Dei Giudici S, Peruzzu A, Mura L, Santucciu C, Maestrale C, Masala G. Identification of Echinococcus granulosus Genotypes G1 and G3 by SNPs Genotyping Assays. Pathogens 2021; 10:125. [PMID: 33530642 DOI: 10.3390/pathogens10020125] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Revised: 01/23/2021] [Accepted: 01/24/2021] [Indexed: 11/25/2022] Open
Abstract
Echinococcus granulosus sensu lato (s.l.) is the causative agent of cystic echinococcosis in animals and humans. Different E. granulosuss.l. genotypes exhibit great diversity in their life cycle, host selectivity and pathogenicity. For this reason, the study of genetic variation within Echinococcus species is of importance for their epidemiological implication. We employed two SNP genotyping technologies to distinguish G1 and G3 E. granulosus sensu stricto (s.s.). genotypes. The genotypes of DNA samples (n = 28) extracted from hydatid cysts of different animal species were identified by amplification and sequencing of a fragment of the mitochondrial nad5 gene. Two SYBR green and three TaqMan real time PCR assays were developed for targeting of three nad5 informative positions (SNP758, 1123, and 1380) known to be able to discriminate G1 from G3. Genotyping by SYBR Green PCR based on cycle threshold (Ct) with melting temperature (Tm) analysis and performed on SNP1123 and SNP1380 failed to identify one DNA sample. TaqMan assays for SNP758, 1123 and 1380 effectively confirmed genotype identification obtained by Sanger sequencing. Our results demonstrated that the combination of the three Taqman assays developed in this study represents a valuable and cost effective tool alternative to DNA sequencing for E. granulosus s.s. genotyping.
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Chesnay A, Lancelin B, Le Brun C, Pastuszka A, Desoubeaux G, Lanotte P. Contribution of a molecular test for the diagnosis of genital infection with Trichomonas vaginalis and Mycoplasma genitalium. Ann Biol Clin (Paris) 2020; 78:623-7. [PMID: 33000757 DOI: 10.1684/abc.2020.1589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
In the present study, we assessed a recently-marketed molecular test, the S-DiaMGTV™ kit (Diagenode), which provides simultaneous detection of Mycoplasma genitalium and Trichomonas vaginalis in urogenital samples. Performance characteristics of the S-DiaMGTV™ kit were compared to an in-house PCR for detection of M. genitalium and, for first time, with direct observation of genital secretions in wet mounting microscopy for T. vaginalis, a routine laboratory method. For M. genitalium, out of 66 samples, two negative with the in-house PCR were found positive with the S-DiaMGTV™ kit and two positive with the in-house PCR were found negative with the kit. For T. vaginalis, four samples were found positive by the molecular test. Among them, two were previously tested by the wet mounting observation and only one was positive. The kit allows an increase of T. vaginalis detection even in a low incidence country. Performances of the kit are in favor of its use in routine laboratory practice.
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Díaz K, Espinoza L, Carvajal R, Silva-Moreno E, Olea AF, Rubio J. Exogenous Application of Brassinosteroid 24-Norcholane 22( S)-23-Dihydroxy Type Analogs to Enhance Water Deficit Stress Tolerance in Arabidopsis thaliana. Int J Mol Sci 2021; 22:ijms22031158. [PMID: 33503838 PMCID: PMC7865588 DOI: 10.3390/ijms22031158] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 01/21/2021] [Accepted: 01/21/2021] [Indexed: 12/20/2022] Open
Abstract
Brassinosteroids (BRs) are plant hormones that play an essential role in plant development and have the ability to protect plants against various environmental stresses, such as low and high temperature, drought, heat, salinity, heavy metal toxicity, and pesticides. Mitigation of stress effects are produced through independent mechanisms or by interaction with other important phytohormones. However, there are few studies in which this property has been reported for BRs analogs. Thus, in this work, the enhancement of drought stress tolerance of A. thaliana was assessed for a series of 2-deoxybrassinosteroid analogs. In addition, the growth-promoting activity in the Rice Lamina Inclination Test (RLIT) was also evaluated. The results show that analog 1 exhibits similar growth activity as brassinolide (BL; used as positive control) in the RLIT bioassay. Interestingly, both compounds increase their activities by a factor of 1.2–1.5 when they are incorporated to polymer micelles formed by Pluronic F-127. On the other hand, tolerance to water deficit stress of Arabidopsis thaliana seedlings was evaluated by determining survival rate and dry weight of seedlings after the recovery period. In both cases, the effect of analog 1 is higher than that exhibited by BL. Additionally, the expression of a subset of drought stress marker genes was evaluated in presence and absence of exogenous applied BRs. Results obtained by qRT-PCR analysis, indicate that transcriptional changes of AtDREBD2A and AtNCED3 genes were more significant in A. thaliana treated with analog 1 in homogeneous solution than in that treated with BL. These changes suggest the activation of alternative pathway in response to water stress deficit. Thus, exogenous application of BRs synthetic analogs could be a potential tool for improvement of crop production under stress conditions.
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Affiliation(s)
- Katy Díaz
- Departamento de Química, Universidad Técnica Federico Santa María, Avenida España 1680, Valparaíso 2340000, Chile; (K.D.); (L.E.); (R.C.)
| | - Luis Espinoza
- Departamento de Química, Universidad Técnica Federico Santa María, Avenida España 1680, Valparaíso 2340000, Chile; (K.D.); (L.E.); (R.C.)
| | - Rodrigo Carvajal
- Departamento de Química, Universidad Técnica Federico Santa María, Avenida España 1680, Valparaíso 2340000, Chile; (K.D.); (L.E.); (R.C.)
| | - Evelyn Silva-Moreno
- Instituto de Investigación Agropecuarias, INIA–La Platina, Avda. Santa Rosa, Santiago 11610, Chile;
| | - Andrés F. Olea
- Instituto de Ciencias Químicas Aplicadas, Facultad de Ingeniería, Universidad Autónoma de Chile, Santiago 8910339, Chile
- Correspondence: (A.F.O.); (J.R.); Tel.: +56-322-652-843 (A.F.O. & J.R.)
| | - Julia Rubio
- Instituto de Ciencias Biomédicas, Facultad de Ciencias de la Salud, Universidad Autónoma de Chile, Santiago 8910339, Chile
- Correspondence: (A.F.O.); (J.R.); Tel.: +56-322-652-843 (A.F.O. & J.R.)
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Liu X, Feng J, Zhang Q, Guo D, Zhang L, Suo T, Hu W, Guo M, Wang X, Huang Z, Xiong Y, Chen G, Chen Y, Lan K. Analytical comparisons of SARS-COV-2 detection by qRT-PCR and ddPCR with multiple primer/probe sets. Emerg Microbes Infect 2020; 9:1175-1179. [PMID: 32448084 PMCID: PMC7448863 DOI: 10.1080/22221751.2020.1772679] [Citation(s) in RCA: 86] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Accepted: 05/19/2020] [Indexed: 11/17/2022]
Abstract
Different primers/probes sets have been developed all over the world for the nucleic acid detection of SARS-CoV-2 by quantitative real time polymerase chain reaction (qRT-PCR) as a standard method. In our recent study, we explored the feasibility of droplet digital PCR (ddPCR) for clinical SARS-CoV-2 nucleic acid detection compared with qRT-PCR using the same primer/probe sets issued by Chinese Center for Disease Control and Prevention (CDC) targeting viral ORF1ab or N gene, which showed that ddPCR could largely minimize the false negatives reports resulted by qRT-PCR [Suo T, Liu X, Feng J, et al. ddPCR: a more sensitive and accurate tool for SARS-CoV-2 detection in low viral load specimens. medRxiv [Internet]. 2020;2020.02.29.20029439. Available from: https://medrxiv.org/content/early/2020/03/06/2020.02.29.20029439.abstract]. Here, we further stringently compared the performance of qRT-PCR and ddPCR for 8 primer/probe sets with the same clinical samples and conditions. Results showed that none of 8 primer/probe sets used in qRT-PCR could significantly distinguish true negatives and positives with low viral load (10-4 dilution). Moreover, false positive reports of qRT-PCR with UCDC-N1, N2 and CCDC-N primers/probes sets were observed. In contrast, ddPCR showed significantly better performance in general for low viral load samples compared to qRT-PCR. Remarkably, the background readouts of ddPCR are relatively lower, which could efficiently reduce the production of false positive reports.
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Affiliation(s)
- Xinjin Liu
- State Key Laboratory of Virology, Modern Virology Research Center, College of Life Sciences, Wuhan University, Wuhan, People’s Republic of China
| | - Jiangpeng Feng
- State Key Laboratory of Virology, Modern Virology Research Center, College of Life Sciences, Wuhan University, Wuhan, People’s Republic of China
| | - Qiuhan Zhang
- State Key Laboratory of Virology, Modern Virology Research Center, College of Life Sciences, Wuhan University, Wuhan, People’s Republic of China
| | - Dong Guo
- State Key Laboratory of Virology, Modern Virology Research Center, College of Life Sciences, Wuhan University, Wuhan, People’s Republic of China
| | - Lu Zhang
- State Key Laboratory of Virology, Modern Virology Research Center, College of Life Sciences, Wuhan University, Wuhan, People’s Republic of China
| | - Tao Suo
- State Key Laboratory of Virology, Renmin Hospital, Wuhan University, Wuhan, People’s Republic of China
| | - Wenjia Hu
- Department of Infectious Disease, Zhongnan Hospital, Wuhan University, Wuhan, People’s Republic of China
| | - Ming Guo
- State Key Laboratory of Virology, Modern Virology Research Center, College of Life Sciences, Wuhan University, Wuhan, People’s Republic of China
| | - Xin Wang
- State Key Laboratory of Virology, Modern Virology Research Center, College of Life Sciences, Wuhan University, Wuhan, People’s Republic of China
| | - Zhixiang Huang
- State Key Laboratory of Virology, Modern Virology Research Center, College of Life Sciences, Wuhan University, Wuhan, People’s Republic of China
| | - Yong Xiong
- Department of Infectious Disease, Zhongnan Hospital, Wuhan University, Wuhan, People’s Republic of China
| | - Guozhong Chen
- State Key Laboratory of Virology, Renmin Hospital, Wuhan University, Wuhan, People’s Republic of China
| | - Yu Chen
- State Key Laboratory of Virology, Modern Virology Research Center, College of Life Sciences, Wuhan University, Wuhan, People’s Republic of China
| | - Ke Lan
- State Key Laboratory of Virology, Modern Virology Research Center, College of Life Sciences, Wuhan University, Wuhan, People’s Republic of China
- Frontier Science Center for Immunology and Metabolism, Wuhan University, Wuhan, People’s Republic of China
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Habieb MS, Dawood AA, Emara MM, Elhelbawy MG, Elhelbawy NG. The Human Genetic Variants CYP2J2 rs2280275 and EPHX2 rs751141 and Risk of Diabetic Nephropathy in Egyptian Type 2 Diabetic Patients. Appl Clin Genet 2020; 13:165-178. [PMID: 33239900 PMCID: PMC7682612 DOI: 10.2147/tacg.s281502] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Accepted: 10/26/2020] [Indexed: 12/13/2022]
Abstract
Background Diabetic nephropathy (DN), the primary driver of end-stage kidney disease, is a problem with serious consequences for society's health. Single nucleotide polymorphisms (SNPs) can define differences in susceptibility to DN and aid in development of personalized treatment. Giving the importance of epoxyeicosatrienoic acids (EETs) in kidney health, we aimed to study the association between two SNPs in the genes controlling synthesis and degradation of EETs (CYP2J2 rs2280275 and EPHX2 rs751141 respectively) and susceptibility of type 2 diabetes mellitus (T2DM) patients to develop DN. Patients and Methods Two hundred subjects were enrolled and categorized into three groups: group I (80 T2DM patients with DN), group II (60 T2DM patients without DN) and group III (60 healthy controls). Urea, creatinine, albumin/creatinine ratio (ACR), and eGFR were measured for all participants. Genotyping of CYP2J2 rs2280275 and EPHX2 rs751141 was done by real time PCR. Results There was no significant difference between the studied groups regarding CYP2J2 rs2280275. In contrast, EPHX2 rs751141 was associated with increased risk of DN under a dominant model (GG vs GA+AA: OR=0.375; 95% CI (0.19-0.75), P=0.006) in unadjusted model and after adjustment for age and sex (OR=0.440; 95% CI (0.21-0.92), P=0.029), recessive model (AA vs GG+GA: OR=0.195; 95% CI (0.05-0.74), P=0.017) and additive model (GA vs GG+AA): OR=0.195; 95% CI (0.05-0.74), P=0.017). Conclusion CYP2J2 rs2280275 was not associated with DN predisposition. However, EPHX2 rs751141 could be a genetic marker for development and progression of DN among Egyptian T2DM patients.
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Affiliation(s)
- Mona S Habieb
- Medical Biochemistry & Molecular Biology Department, Faculty of Medicine, Menoufia University, Shebin Elkom City, Egypt
| | - Ashraf A Dawood
- Medical Biochemistry & Molecular Biology Department, Faculty of Medicine, Menoufia University, Shebin Elkom City, Egypt
| | - Mahmoud M Emara
- Internal Medicine Department, Faculty of Medicine, Menoufia University, Shebin Elkom City, Egypt
| | - Mohammad G Elhelbawy
- Clinical Pathology Department, Faculty of Medicine, Menoufia University, Shebin Elkom City, Egypt
| | - Nesreen G Elhelbawy
- Medical Biochemistry & Molecular Biology Department, Faculty of Medicine, Menoufia University, Shebin Elkom City, Egypt
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Amoroso MG, Lucifora G, Degli Uberti B, Serra F, De Luca G, Borriello G, De Domenico A, Brandi S, Cuomo MC, Bove F, Riccardi MG, Galiero G, Fusco G. Fatal Interstitial Pneumonia Associated with Bovine Coronavirus in Cows from Southern Italy. Viruses 2020; 12:v12111331. [PMID: 33228210 PMCID: PMC7699522 DOI: 10.3390/v12111331] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 11/13/2020] [Accepted: 11/17/2020] [Indexed: 12/13/2022] Open
Abstract
An outbreak of winter dysentery, complicated by severe respiratory syndrome, occurred in January 2020 in a high production dairy cow herd located in a hilly area of the Calabria region. Of the 52 animals belonging to the farm, 5 (9.6%) died with severe respiratory distress, death occurring 3–4 days after the appearance of the respiratory signs (caught and gasping breath). Microbiological analysis revealed absence of pathogenic bacteria whilst Real-time PCR identified the presence of RNA from Bovine Coronavirus (BCoV) in several organs: lungs, small intestine (jejunum), mediastinal lymph nodes, liver and placenta. BCoV was therefore hypothesized to play a role in the lethal pulmonary infection. Like the other CoVs, BCoV is able to cause different syndromes. Its role in calf diarrhea and in mild respiratory disease is well known: we report instead the involvement of this virus in a severe and fatal respiratory disorder, with symptoms and disease evolution resembling those of Severe Acute Respiratory Syndromes (SARS).
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Affiliation(s)
- Maria Grazia Amoroso
- Unit of Virology, Department of Animal Health, Experimental Zooprophylactic Institute of Southern Italy, Via Salute 2, 80055 Portici, Italy; (B.D.U.); (F.S.); (G.D.L.); (S.B.); (G.F.)
- Correspondence:
| | - Giuseppe Lucifora
- Section of Vibo Valentia, Experimental Zooprophylactic Institute of Southern Italy, Contrada Piano di Bruno, 89852 Mileto, Italy;
| | - Barbara Degli Uberti
- Unit of Virology, Department of Animal Health, Experimental Zooprophylactic Institute of Southern Italy, Via Salute 2, 80055 Portici, Italy; (B.D.U.); (F.S.); (G.D.L.); (S.B.); (G.F.)
| | - Francesco Serra
- Unit of Virology, Department of Animal Health, Experimental Zooprophylactic Institute of Southern Italy, Via Salute 2, 80055 Portici, Italy; (B.D.U.); (F.S.); (G.D.L.); (S.B.); (G.F.)
| | - Giovanna De Luca
- Unit of Virology, Department of Animal Health, Experimental Zooprophylactic Institute of Southern Italy, Via Salute 2, 80055 Portici, Italy; (B.D.U.); (F.S.); (G.D.L.); (S.B.); (G.F.)
| | - Giorgia Borriello
- Department of Animal Health, Experimental Zooprophylactic Institute of Southern Italy, Via Salute 2, 80055 Portici, Italy; (G.B.); (M.C.C.); (F.B.); (M.G.R.); (G.G.)
| | - Alessandro De Domenico
- Freelance Veterinary, Ordine dei Veterinari di Vibo Valentia, 89900 Vibo Valentia, Italy;
| | - Sergio Brandi
- Unit of Virology, Department of Animal Health, Experimental Zooprophylactic Institute of Southern Italy, Via Salute 2, 80055 Portici, Italy; (B.D.U.); (F.S.); (G.D.L.); (S.B.); (G.F.)
| | - Maria Concetta Cuomo
- Department of Animal Health, Experimental Zooprophylactic Institute of Southern Italy, Via Salute 2, 80055 Portici, Italy; (G.B.); (M.C.C.); (F.B.); (M.G.R.); (G.G.)
| | - Francesca Bove
- Department of Animal Health, Experimental Zooprophylactic Institute of Southern Italy, Via Salute 2, 80055 Portici, Italy; (G.B.); (M.C.C.); (F.B.); (M.G.R.); (G.G.)
| | - Marita Georgia Riccardi
- Department of Animal Health, Experimental Zooprophylactic Institute of Southern Italy, Via Salute 2, 80055 Portici, Italy; (G.B.); (M.C.C.); (F.B.); (M.G.R.); (G.G.)
| | - Giorgio Galiero
- Department of Animal Health, Experimental Zooprophylactic Institute of Southern Italy, Via Salute 2, 80055 Portici, Italy; (G.B.); (M.C.C.); (F.B.); (M.G.R.); (G.G.)
| | - Giovanna Fusco
- Unit of Virology, Department of Animal Health, Experimental Zooprophylactic Institute of Southern Italy, Via Salute 2, 80055 Portici, Italy; (B.D.U.); (F.S.); (G.D.L.); (S.B.); (G.F.)
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Karamova AE, Semenova VG, Verbenko DA, Obraztsova OA, Vanchugova KM, Nikonorov AA, Deryabin DG, Solomka VS, Kubanov AA. Experimental Modeling of Leprosy in BALB/c, BALB/c Nude, CBA, and C57BL/6ТNF -/- Mice. Bull Exp Biol Med 2020; 169:836-839. [PMID: 33098510 DOI: 10.1007/s10517-020-04991-7] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Indexed: 10/23/2022]
Abstract
Leprosy was modeled in an experiment on BALB/c, BALB/cNude, CBA, and C57BL/6ТNF-/- mice using three Mycobacterium leprae strains obtained from patients with a diagnosis of A30 according to ICD-10 from different regions of the Russian Federation. Proliferation of M. leprae of the used strains showed a temporal-quantitative dependence on the used mouse line. CBA and BALB/cNude mice were optimal for strain R and BALB/c and BALB/cNude lines were optimal for strain I. BALB/cNude mice infected with strain I had low lifespan. M. leprae strain M showed low proliferation activity in BALB/cNude and C57BL/6ТNF-/- mice.
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Affiliation(s)
- A E Karamova
- State Research Center of Dermatovenereology and Cosmetology, Ministry of Health of the Russian Federation, Moscow, Russia
| | - V G Semenova
- State Research Center of Dermatovenereology and Cosmetology, Ministry of Health of the Russian Federation, Moscow, Russia
| | - D A Verbenko
- State Research Center of Dermatovenereology and Cosmetology, Ministry of Health of the Russian Federation, Moscow, Russia
| | - O A Obraztsova
- State Research Center of Dermatovenereology and Cosmetology, Ministry of Health of the Russian Federation, Moscow, Russia
| | - Kh M Vanchugova
- State Research Center of Dermatovenereology and Cosmetology, Ministry of Health of the Russian Federation, Moscow, Russia
| | - A A Nikonorov
- State Research Center of Dermatovenereology and Cosmetology, Ministry of Health of the Russian Federation, Moscow, Russia.
| | - D G Deryabin
- State Research Center of Dermatovenereology and Cosmetology, Ministry of Health of the Russian Federation, Moscow, Russia
| | - V S Solomka
- State Research Center of Dermatovenereology and Cosmetology, Ministry of Health of the Russian Federation, Moscow, Russia
| | - A A Kubanov
- State Research Center of Dermatovenereology and Cosmetology, Ministry of Health of the Russian Federation, Moscow, Russia
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Winzer P, Imhof D, Anghel N, Ritler D, Müller J, Boubaker G, Aguado-Martinez A, Ortega-Mora LM, Ojo KK, VanVoorhis WC, Hemphill A. The Impact of BKI-1294 Therapy in Mice Infected With the Apicomplexan Parasite Neospora caninum and Re-infected During Pregnancy. Front Vet Sci 2020; 7:587570. [PMID: 33195616 PMCID: PMC7593410 DOI: 10.3389/fvets.2020.587570] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2020] [Accepted: 09/08/2020] [Indexed: 01/10/2023] Open
Abstract
Exposure of Neospora caninum tachyzoites to BKI-1294 in vitro results in the formation of long-lived multinucleated complexes (MNCs). However, in vivo treatment of BALB/c mice with BKI-1294 shortly after N. caninum infection during pregnancy was safe and profoundly reduced pup mortality and vertical transmission. We hypothesized that the formation of MNCs could trigger immune responses that contribute to BKI efficacy in vivo. In this study, mice were first vaccinated with a sublethal dose of N. caninum tachyzoites and were treated with BKI-1294. We then investigated the effects of these treatments after mating and re-infection during pregnancy. Effects on fertility, pup survival, vertical transmission, and parasite load in dams were evaluated. Cytokines in sera or splenocyte culture supernatants were assessed by either ELISA or the Luminex™ 200 system, and humoral immune responses against tachyzoite and MNC antigens were compared by ELISA, Western blotting and immunoproteomics. Our results showed that BKI-1294 treatment of live-vaccinated mice reduced the cerebral parasite load in the dams, but resulted in higher neonatal pup mortality and vertical transmission. In live-vaccinated mice, cytokine levels, most notably IFN-y, IL-10, and IL-12, were consistently lower in BKI-1294 treated animals compared to non-treated mice. In addition, comparative Western blotting identified two protein bands in MNC extracts that were only recognized by sera of live-vaccinated mice treated with BKI-1294, and were not found in tachyzoite extracts. We conclude that treatment of live-vaccinated mice with BKI-1294 influenced the cellular and humoral immune responses against infection, affected the safety of the live-vaccine, and decreased protection against re-infection and vertical transmission during pregnancy.
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Affiliation(s)
- Pablo Winzer
- Institute of Parasitology, Vetsuisse Faculty, University of Bern, Bern, Switzerland.,Graduate School for Cellular and Biomedical Sciences, University of Bern, Bern, Switzerland
| | - Dennis Imhof
- Institute of Parasitology, Vetsuisse Faculty, University of Bern, Bern, Switzerland.,Graduate School for Cellular and Biomedical Sciences, University of Bern, Bern, Switzerland
| | - Nicoleta Anghel
- Institute of Parasitology, Vetsuisse Faculty, University of Bern, Bern, Switzerland.,Graduate School for Cellular and Biomedical Sciences, University of Bern, Bern, Switzerland
| | - Dominic Ritler
- Institute of Parasitology, Vetsuisse Faculty, University of Bern, Bern, Switzerland.,Graduate School for Cellular and Biomedical Sciences, University of Bern, Bern, Switzerland
| | - Joachim Müller
- Institute of Parasitology, Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | - Ghalia Boubaker
- Institute of Parasitology, Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | | | - Luis-Miguel Ortega-Mora
- Saluvet, Animal Health Department, Faculty of Veterinary Sciences, Complutense University of Madrid, Ciudad Universitaria s/n, Madrid, Spain
| | - Kayode K Ojo
- Center for Emerging and Re-emerging Infectious Diseases (CERID), Division of Allergy and Infectious Diseases, Department of Medicine, University of Washington, Seattle, WA, United States
| | - Wesley C VanVoorhis
- Center for Emerging and Re-emerging Infectious Diseases (CERID), Division of Allergy and Infectious Diseases, Department of Medicine, University of Washington, Seattle, WA, United States.,Departments of Global Health and Microbiology, University of Washington, Seattle, WA, United States
| | - Andrew Hemphill
- Institute of Parasitology, Vetsuisse Faculty, University of Bern, Bern, Switzerland
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Park YJ, Jang MJ. Blue Light Induced Edible Mushroom ( Lentinula edodes) Proteomic Analysis. J Fungi (Basel) 2020; 6:jof6030127. [PMID: 32781608 PMCID: PMC7558539 DOI: 10.3390/jof6030127] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 07/24/2020] [Accepted: 08/05/2020] [Indexed: 11/17/2022] Open
Abstract
Blue light is an important environmental factor that induces mushroom growth and morphological changes. In this study, after confirming the morphological difference between Lentinula edodes (LE) under blue light condition (BL) and lightless condition (LL), the increase and decrease in LE protein and the expression of RNA of each protein were confirmed under each condition. LE specimens grown in BL and LL were identified by 253 spots in BL through 2D electrophoresis and LC-MSMS analysis, and 22 types of proteins were identified. It was confirmed that 14 types of proteins showed reduced expression in BL compared to LL. On the other hand, eight kinds of proteins with increased expression in blue light compared to LL were identified. As a result of confirming the difference from the expression pattern in 2D electrophoresis through Quantitative Real-Time PCR, it was confirmed that the expression pattern of the two proteins showed a difference. Therefore, this study will be a key study on the changes in mushroom morphology induced by blue light and the proteins that induce it.
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Beinhauerova M, Babak V, Bertasi B, Boniotti MB, Kralik P. Utilization of Digital PCR in Quantity Verification of Plasmid Standards Used in Quantitative PCR. Front Mol Biosci 2020; 7:155. [PMID: 32850953 PMCID: PMC7403525 DOI: 10.3389/fmolb.2020.00155] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Accepted: 06/19/2020] [Indexed: 01/07/2023] Open
Abstract
Quantitative PCR (qPCR) is a widely used method for nucleic acid quantification of various pathogenic microorganisms. For absolute quantification of microbial load by qPCR, it is essential to create a calibration curve from accurately quantified quantification standards, from which the number of pathogens in a sample is derived. Spectrophotometric measurement of absorbance is a routine method for estimating nucleic acid concentration, however, it may be affected by presence of other potentially contaminating nucleic acids or proteins and salts. Therefore, absorbance measurement is not reliable for estimating the concentration of stock solutions of quantification standards, based on which they are subsequently diluted. In this study, we utilized digital PCR (dPCR) for absolute quantification of qPCR plasmid standards and thus detecting possible discrepancies in the determination of the plasmid DNA number of standards derived from UV spectrophotometry. The concept of dPCR utilization for quantification of standards was applied on 45 qPCR assays using droplet-based and chip-based dPCR platforms. Using dPCR, we found that spectrophotometry overestimated the concentrations of standard stock solutions in the majority of cases. Furthermore, batch-to-batch variation in standard quantity was revealed, as well as quantitative changes in standards over time. Finally, it was demonstrated that droplet-based dPCR is a suitable tool for achieving defined quantity of quantification plasmid standards and ensuring the quantity over time, which is crucial for acquiring homogenous, reproducible and comparable quantitative data by qPCR.
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Affiliation(s)
- Martina Beinhauerova
- Department of Food and Feed Safety, Veterinary Research Institute, Brno, Czechia.,Department of Experimental Biology, Faculty of Science, Masaryk University, Brno, Czechia
| | - Vladimir Babak
- Department of Food and Feed Safety, Veterinary Research Institute, Brno, Czechia
| | - Barbara Bertasi
- Controllo Alimenti, Istituto Zooprofilattico Sperimentale della Lombardia e dell'Emilia Romagna, Brescia, Italy
| | - Maria Beatrice Boniotti
- Tecnologie Biologiche Applicate, Istituto Zooprofilattico Sperimentale della Lombardia e dell'Emilia Romagna, Brescia, Italy
| | - Petr Kralik
- Department of Food and Feed Safety, Veterinary Research Institute, Brno, Czechia.,Department of Hygiene and Technology of Food of Animal Origin and of Gastronomy, Faculty of Veterinary Hygiene and Ecology, University of Veterinary and Pharmaceutical Sciences, Brno, Czechia
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Mandas D, Salati F, Polinas M, Sanna MA, Zobba R, Burrai GP, Alberti A, Antuofermo E. Histopathological and Molecular Study of Pacific Oyster Tissues Provides Insights into V. aestuarianus Infection Related to Oyster Mortality. Pathogens 2020; 9:pathogens9060492. [PMID: 32575736 PMCID: PMC7350300 DOI: 10.3390/pathogens9060492] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 06/15/2020] [Accepted: 06/18/2020] [Indexed: 12/12/2022] Open
Abstract
Consumer preference for healthy and sustainable food products has been steadily increasing in recent years. Bivalve mollusks satisfy these characteristics and have captured ever-increasing market shares. However, the expansion of molluscan culture in worldwide and global trade have favored the spread of pathogens around the world. Combined with environmental changes and intensive production systems this has contributed to the occurrence of mass mortality episodes, thus posing a threat to the production of different species, including the Pacific oyster Crassotrea gigas. In the San Teodoro lagoon, one of the most devoted lagoons to extensive Pacific oyster aquaculture in Sardinia, a mortality outbreak was observed with an estimated 80% final loss of animal production. A study combining cultural, biomolecular and histopathological methods was conducted: (1) to investigate the presence of different Vibrio species and OsHV-1 in selected oyster tissues (digestive gland, gills, and mantle); (2) to quantify Vibrio aestuarianus and to evaluate the severity of hemocyte infiltration in infected tissues; (3) to produce post-amplification data and evaluating ToxR gene as a target for phylogenetic analyses. Results provide new insights into V. aestuarianus infection related to oyster mortality outbreaks and pave the way to the development of tools for oyster management.
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Affiliation(s)
- Daniela Mandas
- Fish Diseases and Aquaculture Center, IZS of Oristano, 09170 Oristano, Italy; (D.M.); (F.S.)
| | - Fulvio Salati
- Fish Diseases and Aquaculture Center, IZS of Oristano, 09170 Oristano, Italy; (D.M.); (F.S.)
| | - Marta Polinas
- Department of Veterinary Medicine, University of Sassari, 07100 Sassari, Italy; (M.P.); (M.A.S.); (R.Z.); (G.P.B.)
| | - Marina Antonella Sanna
- Department of Veterinary Medicine, University of Sassari, 07100 Sassari, Italy; (M.P.); (M.A.S.); (R.Z.); (G.P.B.)
| | - Rosanna Zobba
- Department of Veterinary Medicine, University of Sassari, 07100 Sassari, Italy; (M.P.); (M.A.S.); (R.Z.); (G.P.B.)
- Mediterranean Center for Disease Control (MCDC), University of Sassari, 07100 Sassari, Italy
| | - Giovanni Pietro Burrai
- Department of Veterinary Medicine, University of Sassari, 07100 Sassari, Italy; (M.P.); (M.A.S.); (R.Z.); (G.P.B.)
- Mediterranean Center for Disease Control (MCDC), University of Sassari, 07100 Sassari, Italy
| | - Alberto Alberti
- Department of Veterinary Medicine, University of Sassari, 07100 Sassari, Italy; (M.P.); (M.A.S.); (R.Z.); (G.P.B.)
- Mediterranean Center for Disease Control (MCDC), University of Sassari, 07100 Sassari, Italy
- Correspondence: (A.A.); (E.A.); Tel.: +39-3209225647 (A.A.); +39-3398325369 (E.A.)
| | - Elisabetta Antuofermo
- Department of Veterinary Medicine, University of Sassari, 07100 Sassari, Italy; (M.P.); (M.A.S.); (R.Z.); (G.P.B.)
- Mediterranean Center for Disease Control (MCDC), University of Sassari, 07100 Sassari, Italy
- Correspondence: (A.A.); (E.A.); Tel.: +39-3209225647 (A.A.); +39-3398325369 (E.A.)
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Parvizi O, El-Adawy H, Roesler U, Neubauer H, Mertens-Scholz K. Performance Analysis of Anaplasma Antibody Competitive ELISA Using the ROC Curve for Screening of Anaplasmosis in Camel Populations in Egypt. Pathogens 2020; 9:pathogens9030165. [PMID: 32121019 PMCID: PMC7157543 DOI: 10.3390/pathogens9030165] [Citation(s) in RCA: 6] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Revised: 02/18/2020] [Accepted: 02/25/2020] [Indexed: 11/16/2022] Open
Abstract
Anaplasmosis is a tick-born and potential zoonotic disease caused by Anaplasma (A.) phagocytophilum, A. ovis, A. platys and A. capra. Anaplasma marginale affecting bovines and camels causing significant economic losses. Camels as an integral part of the socio-economic lifestyle of nomads in semi-arid to arid ecosystems are prone to suffer from subclinical Anaplasma infections. This study aimed to determine the performance and adaptation of commercial competitive Anaplasma ELISA (cELISA) as a tool for screening the seroprevalence of anaplasmosis whitin the camel populations in Egypt. This study was based on the serological investigation of 437 camel sera collected between 2015 and 2016 during a Q fever prevalence study in Egypt using commercially available cELISA for the detection of antibodies specific for Anaplasma in bovine serum. The receiver operating characteristic (ROC) curve, an analysis method for optimizing cutoff values in cELISAs, was used to estimate the sensitivity and specificity using 76 true as serological positive (n = 7) and negative (n = 60) for Anaplasma antibodies. ROC curve analysis was done for 7 true positive and 60 true negative bovine samples and 7 true positive and 29 true negative camel samples serum. Real time PCR and/or conventional PCR was applied to confirm Anaplasma spp. specific-DNA in camel serum as an indication of a true positive and true negative for ROC analysis. Chi square analysis was performed to estimate the association between risk factors and anaplasmosis in camels. The cutoff value was determined as 0.42 (p value ≤ 0.001). Data simulation with randomly generated values revealed a cutoff value of 0.417 (p ≤ 0.001) with resulting 58.1% Se and 97.8% Sp. Seven true positive and 29 true negative camel serum samples was confirmed by PCR. Using the estimated cut off, the seroprevalence in the Nile Valley and Delta and the Eastern Desert domain was 47.4% and 46.4%, respectively. The potential risk factors as domains and origin of animals were less significantly associated with the prevalence of anaplasmosis (domains: χ(2) = 41.8, p value ≤ 0.001 and origin: χ(2) = 42.56, p value ≤ 0.001). Raising awareness especially for veterinarians and animal owners will significantly contribute to the best understanding of anaplasmosis in camels in Egypt. Alternative (in silico) validation techniques and preliminary prevalence studies are mandatory towards the control of neglected anaplasmosis in the camel population.
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Affiliation(s)
- Omid Parvizi
- Institute of Bacterial Infections and Zoonoses, Friedrich-Loeffler-Institut (Federal research institute for Animal Health), 07743 Jena, Germany; (H.E.-A.); (H.N.); (K.M.-S.)
- Correspondence:
| | - Hosny El-Adawy
- Institute of Bacterial Infections and Zoonoses, Friedrich-Loeffler-Institut (Federal research institute for Animal Health), 07743 Jena, Germany; (H.E.-A.); (H.N.); (K.M.-S.)
- Faculty of Veterinary Medicine, Kafrelsheikh University, Kafr El-Sheikh 33516, Egypt
| | - Uwe Roesler
- Institute for Animal Hygiene and Environmental Health, Free University Berlin, 14163 Berlin, Germany;
| | - Heinrich Neubauer
- Institute of Bacterial Infections and Zoonoses, Friedrich-Loeffler-Institut (Federal research institute for Animal Health), 07743 Jena, Germany; (H.E.-A.); (H.N.); (K.M.-S.)
| | - Katja Mertens-Scholz
- Institute of Bacterial Infections and Zoonoses, Friedrich-Loeffler-Institut (Federal research institute for Animal Health), 07743 Jena, Germany; (H.E.-A.); (H.N.); (K.M.-S.)
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Parvizi O, El-Adawy H, Melzer F, Roesler U, Neubauer H, Mertens-Scholz K. Seroprevalence and Molecular Detection of Bovine Anaplasmosis in Egypt. Pathogens 2020; 9:E64. [PMID: 31963251 PMCID: PMC7168636 DOI: 10.3390/pathogens9010064] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Revised: 01/08/2020] [Accepted: 01/13/2020] [Indexed: 11/16/2022] Open
Abstract
Bovine anaplasmosis is a tick-borne disease with zoonotic potential, caused by the obligate intracellular bacterium Anaplasma marginale. The disease is distributed worldwide in tropical and subtropical regions. The economic losses from anaplasmosis in animals is of significant importance because it causes severe morbidity and mortality in cattle. Recovered animals may become persistent carriers. Epidemiological information on the actual status of bovine anaplasmosis in Egypt is scarce. Thus, this study aimed to determine anti-Anaplasma antibody and DNA in serum samples using ELISA and PCR, respectively. In total, 758 bovine sera were collected from cattle farms located in 24 Egyptian governorates in 2015 to 2016. Sera were analyzed with the commercially available 'Anaplasma antibody competitive ELISA v2' kit and 'AmpliTest Anaplasma/Ehrlichia spp. real time TaqMan TM PCR. Anaplasma spp. antibodies were detected in 140 (18.5%) (CI: 15.8-21.4%) of the investigated sera by ELISA, and Anaplasma/Ehrlichia-DNA was detected in 40 (5.3%) (CI: 3.8-7.1%) of the positive sera by real time PCR. Co-detection of both Anaplasma spp. and Coxiella burnetii-specific antibodies was proven in 30 (4%) of the investigated sera. The results of this work confirm the significant prevalence of bovine anaplasmosis in Egypt. Raising awareness in decision makers of the public health, veterinarians and animal owners is required to reduce the spread of infection.
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Affiliation(s)
- Omid Parvizi
- Institute of Bacterial Infections and Zoonoses, Friedrich-Loeffler-Institut (Federal Research Institute for Animal Health), Naumburger Str. 96a, 07743 Jena, Germany; (H.E.-A.); (F.M.); (H.N.); (K.M.-S.)
| | - Hosny El-Adawy
- Institute of Bacterial Infections and Zoonoses, Friedrich-Loeffler-Institut (Federal Research Institute for Animal Health), Naumburger Str. 96a, 07743 Jena, Germany; (H.E.-A.); (F.M.); (H.N.); (K.M.-S.)
- Faculty of Veterinary Medicine, Kafrelsheikh University, Kafr El-Sheikh 33516, Egypt
| | - Falk Melzer
- Institute of Bacterial Infections and Zoonoses, Friedrich-Loeffler-Institut (Federal Research Institute for Animal Health), Naumburger Str. 96a, 07743 Jena, Germany; (H.E.-A.); (F.M.); (H.N.); (K.M.-S.)
| | - Uwe Roesler
- Institute for Animal Hygiene and Environmental Health, Free University, Berlin, Robert-von Ostertag-Str. 7-13, 14163 Berlin, Germany;
| | - Heinrich Neubauer
- Institute of Bacterial Infections and Zoonoses, Friedrich-Loeffler-Institut (Federal Research Institute for Animal Health), Naumburger Str. 96a, 07743 Jena, Germany; (H.E.-A.); (F.M.); (H.N.); (K.M.-S.)
| | - Katja Mertens-Scholz
- Institute of Bacterial Infections and Zoonoses, Friedrich-Loeffler-Institut (Federal Research Institute for Animal Health), Naumburger Str. 96a, 07743 Jena, Germany; (H.E.-A.); (F.M.); (H.N.); (K.M.-S.)
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