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Lian S, Zhang H, Wang Y, Song J, Liu P, Geng Z, Wu R, Wang D, Wang J. The BLV-miRNAs pathway of BLV inhibits the expression of Lactoferrin, Lactoperoxidase, Alpha-lactalbumin and Beta-lactoglobulin proteins. Vet Microbiol 2024; 295:110153. [PMID: 38889618 DOI: 10.1016/j.vetmic.2024.110153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2024] [Revised: 06/04/2024] [Accepted: 06/14/2024] [Indexed: 06/20/2024]
Abstract
Bovine leukemia virus (BLV) is a widespread virus that decreases milk production and quality in dairy cows. As crucial components of BLV, BLV-encoded microRNAs (BLV-miRNAs) affect BLV replication and may impact the synthesis of Lactoferrin (LTF), Lactoperoxidase (LPO), Alpha-lactalbumin (alpha-LA), and Beta-lactoglobulin (beta-LG). In this study, we investigated the targeting relationship between BLV-miRNAs and LTF, LPO, alpha-LA, and beta-LG in cow's milk. Additionally, we investigated the possible mechanisms by which BLV reduces milk quality. The results showed that cow's milk had significantly lower levels of LTF, LPO, and alpha-LA proteins in BLV-positive cows than in BLV-negative cows. BLV-△miRNAs (miRNA-deleted BLV) enhanced the reduction of LPO, alpha-LA, and beta-LG protein levels caused by BLV infection. Multiple BLV-miRNAs have binding sites with LTF and LPO mRNA; however, only BLV-miR-B1-5 P has a targeting relationship with LPO mRNA. The results revealed that BLV-miR-B1-5 P inhibits LPO protein expression by targeting LPO mRNA. However, BLV does not directly regulate the expression of LTF, alpha-LA, or beta-LG proteins through BLV-miRNAs.
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Affiliation(s)
- Shuai Lian
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, China; China Key Laboratory of Bovine Disease Control in Northeast China, Ministry of Agriculture and Rural affairs, Daqing 163319, China; Heilongjiang Provincial Key Laboratory of Prevention and Control of Bovine Diseases, Daqing 163319, China
| | - Han Zhang
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, China; China Key Laboratory of Bovine Disease Control in Northeast China, Ministry of Agriculture and Rural affairs, Daqing 163319, China; Heilongjiang Provincial Key Laboratory of Prevention and Control of Bovine Diseases, Daqing 163319, China
| | - Yandi Wang
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, China; China Key Laboratory of Bovine Disease Control in Northeast China, Ministry of Agriculture and Rural affairs, Daqing 163319, China; Heilongjiang Provincial Key Laboratory of Prevention and Control of Bovine Diseases, Daqing 163319, China
| | - Jiahe Song
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, China; China Key Laboratory of Bovine Disease Control in Northeast China, Ministry of Agriculture and Rural affairs, Daqing 163319, China; Heilongjiang Provincial Key Laboratory of Prevention and Control of Bovine Diseases, Daqing 163319, China
| | - Pengfei Liu
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, China; China Key Laboratory of Bovine Disease Control in Northeast China, Ministry of Agriculture and Rural affairs, Daqing 163319, China; Heilongjiang Provincial Key Laboratory of Prevention and Control of Bovine Diseases, Daqing 163319, China
| | - Zijian Geng
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, China; China Key Laboratory of Bovine Disease Control in Northeast China, Ministry of Agriculture and Rural affairs, Daqing 163319, China; Heilongjiang Provincial Key Laboratory of Prevention and Control of Bovine Diseases, Daqing 163319, China
| | - Rui Wu
- College of Biology and Agriculture, Jiamusi University, Jiamusi 154007, China
| | - Di Wang
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, China; China Key Laboratory of Bovine Disease Control in Northeast China, Ministry of Agriculture and Rural affairs, Daqing 163319, China; Heilongjiang Provincial Key Laboratory of Prevention and Control of Bovine Diseases, Daqing 163319, China.
| | - Jianfa Wang
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, China; China Key Laboratory of Bovine Disease Control in Northeast China, Ministry of Agriculture and Rural affairs, Daqing 163319, China; Heilongjiang Provincial Key Laboratory of Prevention and Control of Bovine Diseases, Daqing 163319, China.
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Shaukat W, de Jong E, McCubbin KD, Biesheuvel MM, van der Meer FJUM, De Buck J, Lhermie G, Hall DC, Kalbfleisch KN, Kastelic JP, Orsel K, Barkema HW. Herd-level prevalence of bovine leukemia virus, Salmonella Dublin and Neospora caninum in Alberta, Canada, dairy herds using ELISA on bulk tank milk samples. J Dairy Sci 2024:S0022-0302(24)00849-X. [PMID: 38825106 DOI: 10.3168/jds.2023-24611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2023] [Accepted: 04/14/2024] [Indexed: 06/04/2024]
Abstract
Endemic infectious diseases remain a major challenge for dairy producers worldwide. For effective disease control programs, up-to-date prevalence estimates are of utmost importance. The objective of this study was to estimate the herd-level prevalence of bovine leukemia virus (BLV), Salmonella Dublin, and Neospora caninum in dairy herds in Alberta, Canada using a serial cross-sectional study design. Bulk tank milk samples from all Alberta dairy farms were collected 4 times, in December 2021 (n = 489), April 2022 (n = 487), July 2022 (n = 487), and October 2022 (n = 480), and tested for antibodies against BLV, S. Dublin, and N. caninum using ELISAs. Herd-level apparent prevalence was calculated as positive samples divided by total tested samples at each time point. A mixed effect modified Poisson regression model was employed to assess the association of prevalence with region, herd size, herd type, and type of milking system. Apparent prevalence of BLV was 89.4, 88.7, 86.9 and 86.9% in December, April, July, and October, respectively, whereas for S. Dublin apparent prevalence was 11.2, 6.6, 8.6, and 8.5%, and for N. caninum apparent prevalence was 18.2, 7.4, 7.8, and 15.0%. For BLV, S. Dublin and N. caninum, a total of 91.7, 15.6, and 28.1% of herds, respectively, were positive at least once, whereas 82.5, 3.6, and 3.0% of herds were ELISA-positive at all 4 times. Compared with the north region, central Alberta had a high prevalence (prevalence ratio (PR) = 1.13) of BLV-antibody positive herds, whereas south Alberta had a high prevalence (PR = 2.56) of herds positive for S. Dublin antibodies. Furthermore, central (PR = 0.52) and south regions (PR = 0.46) had low prevalence of N. caninum-positive herds compared with the north. Hutterite colony herds were more frequently BLV-positive (PR = 1.13) but less frequently N. caninum-positive (PR = 0.47). Large herds (>7,200 L/day milk delivered ∼ > 250 cows) were 1.1 times more often BLV-positive, whereas small herds (≤3,600 L/day milk delivered ∼ ≤ 125 cows) were 3.2 times more often N. caninum-positive. For S. Dublin, Hutterite-colony herds were less frequently (PR = 0.07) positive than non-colony herds only in medium and large stratum but not in small stratum. Moreover, larger herds were more frequently (PR = 2.20) S. Dublin-positive than smaller herds only in non-colony stratum but not in colony stratum. Moreover, N. caninum prevalence was 1.6 times higher on farms with conventional milking systems compared with farms with an automated milking system. These results provide up-to-date information of the prevalence of these infections that will inform investigations of within-herd prevalence of these infections and help in devising evidence-based disease control strategies.
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Affiliation(s)
- Waseem Shaukat
- Faculty of Veterinary Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Ellen de Jong
- Faculty of Veterinary Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Kayley D McCubbin
- Faculty of Veterinary Medicine, University of Calgary, Calgary, Alberta, Canada; One Health at UCalgary, University of Calgary, Calgary, Alberta, Canada
| | - Marit M Biesheuvel
- Faculty of Veterinary Medicine, University of Calgary, Calgary, Alberta, Canada
| | | | - Jeroen De Buck
- Faculty of Veterinary Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Guillaume Lhermie
- Faculty of Veterinary Medicine, University of Calgary, Calgary, Alberta, Canada; The Simpson Centre for Food and Agricultural Policy, The School of Public Policy, University of Calgary, Calgary, AB, Canada
| | - David C Hall
- Faculty of Veterinary Medicine, University of Calgary, Calgary, Alberta, Canada
| | | | - John P Kastelic
- Faculty of Veterinary Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Karin Orsel
- Faculty of Veterinary Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Herman W Barkema
- Faculty of Veterinary Medicine, University of Calgary, Calgary, Alberta, Canada; One Health at UCalgary, University of Calgary, Calgary, Alberta, Canada; Department of Community Health Sciences, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.
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3
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De Souza Ferreira L, Ruegg PL. Graduate Student Literature Review: Hemotropic mycoplasmas in cattle. J Dairy Sci 2024; 107:3185-3196. [PMID: 38101735 DOI: 10.3168/jds.2023-24120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Accepted: 11/13/2023] [Indexed: 12/17/2023]
Abstract
The objective of this narrative literature review is to better understand bovine hemoplasmosis, an emerging disease that threatens dairy animal health. Several species of hemotropic mycoplasma are known to infect both animals and humans, and Mycoplasma wenyonii and Candidatus Mycoplasma haemobos are the species that infect red blood cells of cattle. These microorganisms are associated with clinical signs in dairy cattle, but the effects of infection on health and productivity of dairy cows are poorly understood. In this paper, we review information about the epidemiology of bovine hemoplasmosis in different countries, including clinical signs associated with hemoplasmosis in cattle, methods of diagnosis, treatment, possible routes of transmission, risk factors for infection, and disease progression. Although hemoplasmas have been reported to infect cattle in many countries, and methods used to detect these organisms have improved, numerous gaps in knowledge were identified. The pathogenesis of the disease and potential effect on animal health and productivity remain unclear. With this review, we seek to contribute to the understanding of hemoplasmosis in cattle and provide insights for further research to improve disease management strategies and overall animal health in the dairy industry.
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Affiliation(s)
- L De Souza Ferreira
- Department of Large Animal Clinical Sciences, Michigan State University, East Lansing, MI 48824.
| | - P L Ruegg
- Department of Large Animal Clinical Sciences, Michigan State University, East Lansing, MI 48824
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Salehi M, Negahdari B, Mehryab F, Shekari F. Milk-Derived Extracellular Vesicles: Biomedical Applications, Current Challenges, and Future Perspectives. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:8304-8331. [PMID: 38587896 DOI: 10.1021/acs.jafc.3c07899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/09/2024]
Abstract
Extracellular vesicles (EVs) are nano to-micrometer-sized sacs that are released by almost all animal and plant cells and act as intercellular communicators by transferring their cargos between the source and target cells. As a safe and scalable alternative to conditioned medium-derived EVs, milk-derived EVs (miEVs) have recently gained a great deal of popularity. Numerous studies have shown that miEVs have intrinsic therapeutic actions that can treat diseases and enhance human health. Additionally, they can be used as natural drug carriers and novel classes of biomarkers. However, due to the complexity of the milk, the successful translation of miEVs from benchtop to bedside still faces several unfilled gaps, especially a lack of standardized protocols for the isolation of high-purity miEVs. In this work, by comprehensively reviewing the bovine miEVs studies, we provide an overview of current knowledge and research on miEVs while highlighting their challenges and enormous promise as a novel class of theranostics. It is hoped that this study will pave the way for clinical applications of miEVs by addressing their challenges and opportunities.
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Affiliation(s)
- Mahsa Salehi
- Department of Medical Biotechnology, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran 14177-55469, Iran
- Department of Stem Cells and Developmental Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran 16635-148, Iran
| | - Babak Negahdari
- Department of Medical Biotechnology, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran 14177-55469, Iran
| | - Fatemeh Mehryab
- Department of Stem Cells and Developmental Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran 16635-148, Iran
- Department of Pharmaceutics and Pharmaceutical Nanotechnology, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran 14155-6153, Iran
| | - Faezeh Shekari
- Department of Stem Cells and Developmental Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran 16635-148, Iran
- Advanced Therapy Medicinal Product Technology Development Center (ATMP-TDC), Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran 16635-148, Iran
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5
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Shrestha S, Orsel K, Droscha C, Mijar S, van der Meer F. Removing bovine leukemia virus infected animals with high proviral load leads to lowering within-herd prevalence and new case reduction. J Dairy Sci 2024:S0022-0302(24)00633-7. [PMID: 38554820 DOI: 10.3168/jds.2023-24484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Accepted: 02/22/2024] [Indexed: 04/02/2024]
Abstract
Bovine leukosis is prevalent in the North American dairy industry and its effect on animal health and production is widely documented. However, not all bovine leukemia virus (BLV) infected animals transmit the virus equally. Animals with high BLV proviral loads (HPL) are associated with higher transmission risks and therefore, their removal may reduce transmission and eventually within-herd prevalence. We aimed to evaluate the impact of selectively removing HPL cows on the within-herd BLV prevalence and incidence rate of BLV infection in 10 dairy herds. Annual blood and/or milk samples were collected from adult cows over 3 years. Positivity with BLV were determined by ELISA tests and proviral loads in blood of BLV-positive animals were estimated with BLV SS1 quantitative PCR assays. Herd managers were encouraged to consider the proviral load when making culling decisions and implement BLV control practices. High proviral load cows had the highest relative risk of removal indicating the farmers prioritized HPL cows for culling. The within-herd BLV prevalence decreased significantly in 4 herds whereas BLV incidence rate decreased in 9 herds. Over the 3 years, the proviral load demonstrated a relatively stable level, suggesting a single proviral load test in an adult cow may suffice to make culling decisions.
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Affiliation(s)
- Sulav Shrestha
- Faculty of Veterinary Medicine, University of Calgary, Calgary, AB, Canada T2N 4N1.
| | - Karin Orsel
- Faculty of Veterinary Medicine, University of Calgary, Calgary, AB, Canada T2N 4N1
| | - Casey Droscha
- CentralStar Cooperative, Inc., East Lansing, Michigan, USA
| | - Sanjaya Mijar
- Faculty of Veterinary Medicine, University of Calgary, Calgary, AB, Canada T2N 4N1
| | - Frank van der Meer
- Faculty of Veterinary Medicine, University of Calgary, Calgary, AB, Canada T2N 4N1
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6
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Tanida T, Tagami T, Sato H, Kyaw HM, Fujikawa T, Nagano M, Momozawa K, Yanagawa Y, Katagiri S. Effects of recombinant osteopontin expressed in Escherichia coli on the recovery of the endometrial epidermal growth factor profile and fertility in repeat breeder dairy cows. Theriogenology 2024; 217:159-168. [PMID: 38280277 DOI: 10.1016/j.theriogenology.2024.01.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Revised: 12/26/2023] [Accepted: 01/10/2024] [Indexed: 01/29/2024]
Abstract
Endometrial epidermal growth factor (EGF) shows a cyclic change with two peaks on days 2-4 and days 13-14 of the estrous cycle. In repeat breeder cows, loss of the peaks has been associated with reduced fertility. By infusing seminal plasma (SP) and osteopontin (OPN) derived from SP and milk into the vagina, their EGF profile and fertility are restored. However, SP is difficult to obtain, and both SP and OPN can transmit infectious diseases. While OPN can be sourced from recombinant protein without this risk, recombinant bovine OPN (rOPN) expressed in Escherichia coli should be examined for its effects on the EGF profile, since it does not undergo posttranslational modification, which is important for its biological activity. In study 1, PBS, SP (0.5 mL), and rOPN (0.3 mg) were infused into the vagina at estrus (day 0) in 74, 37, and 105 repeat breeder Holstein cows, respectively, with an altered EGF profile. The endometrial EGF concentrations were measured on day 3. Some cows (n = 58, 20, and 83, respectively) were inseminated immediately before the infusion and then diagnosed for pregnancy between days 30 and 35. The normalization rate of the EGF profile and conception rate in the rOPN group (58.1 % and 47.0 %, respectively) were not significantly different from those in the SP group (62.2 % and 45.0 %, respectively) but higher than those in PBS group (29.7 % and 28.1 %, respectively) (P < 0.05). In study 2, repeat breeder cows with an altered EGF profile were infused with PBS (n = 18) and rOPN (n = 17), while fertile controls with a normal EGF profile (n = 18) were infused with PBS. Two or three embryos were transferred into cows on day 7 and then recovered on day 14. Embryo recovery rates of the rOPN and fertile groups were comparable (58.7 % vs. 58.3 %) but higher than that of the PBS group (58.7 % vs. 32.0 %) (P < 0.05). The embryo recovery rate of cows with normalized EGF profile was higher than that of cows with unnormalized EGF profile (64.4 % vs. 16.7 %) (P < 0.05). The embryo sizes of cows in the rOPN and fertile groups were comparable but larger than those in the PBS group (P < 0.05). However, the embryo size was not correlated to the corresponding endometrial EGF concentrations. In conclusion, rOPN without posttranslational modifications normalized the EGF profile in repeat breeder cows. Improved fertility by normalization of the EGF profile could be attributed partly to the increased embryo viability up to day 14.
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Affiliation(s)
- Takashi Tanida
- Laboratory of Theriogenology, Department of Clinical Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, 060-0818, Japan
| | - Takayoshi Tagami
- Laboratory of Molecular Enzymology, Research Faculty of Agriculture, Hokkaido University, Sapporo, 060-8589, Japan
| | - Hiroko Sato
- Laboratory of Theriogenology, Department of Clinical Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, 060-0818, Japan
| | - Hay Mar Kyaw
- Laboratory of Theriogenology, Department of Clinical Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, 060-0818, Japan
| | | | - Masashi Nagano
- Laboratory of Animal Reproduction, Department of Animal Science, School of Veterinary Medicine, Kitasato University, 35-1 Higashi-23, Towada, 034-8628, Japan
| | - Kenji Momozawa
- Laboratory of Animal Reproduction, Department of Animal Science, School of Veterinary Medicine, Kitasato University, 35-1 Higashi-23, Towada, 034-8628, Japan
| | - Yojiro Yanagawa
- Laboratory of Theriogenology, Department of Clinical Sciences, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, 060-0818, Japan
| | - Seiji Katagiri
- Laboratory of Theriogenology, Department of Clinical Sciences, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, 060-0818, Japan.
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de Souza Ferreira L, Bolin S, Abuelo A, Norby B, Ruegg PL. Apparent prevalence of hemotropic mycoplasma in dairy calves and replacement heifers on Michigan farms. J Dairy Sci 2024:S0022-0302(24)00504-6. [PMID: 38395406 DOI: 10.3168/jds.2023-24395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Accepted: 01/23/2024] [Indexed: 02/25/2024]
Abstract
The bovine hemoplasmas include Mycoplasma wenyonii and Candidatus Mycoplasma hemobos which are increasingly recognized as infecting cattle throughout the world. Infection with hemotropic mycoplasma has been reported to be widespread in mature dairy cows, but little is known about prevalence in calves and heifers. The objective of this study was to investigate the prevalence and dynamics of infection with M. wenyonii and C.M. hemobos infections in calves and replacement heifers on Michigan dairy farms and assess potential associations between infection status and hematological values. The study was designed as a prospective cross-sectional study with a longitudinal component. A convenience sample of 11 farms agreed to participate and were visited twice between March and September 2022. During the first farm visit, researchers collected blood samples from up to 94 animals per farm distributed among newborn and pre-weaned calves (n ≤ 31), weaned calves (n = 21), pre-breeding heifers (n = 21), and pregnant heifers (n = 21). During the first visit, blood samples (n = 174) were also collected from a convenience sample of mature cows to confirm the herd infection status. The same calves and heifers were sampled again about 95 d (±3.0) later. During the first visit, blood samples were collected from 797 calves and replacement heifers, while 675 samples were collected during the second visit due to inability to locate some animals. Detection of M. wenyonii and C. M. hemobos were based on results of real time PCR. The hematocrit was determined using microcentrifugation and the concentration of leukocytes using an automated cell counter. In all herds, most mature cows that were sampled tested positive for infection. The within herd apparent prevalence of hemoplasma in calves and replacement heifers was 100% for both M. wenyonii and C. M. hemobos. The apparent prevalence of hemoplasma in youngstock was associated with age. In calves that were 1 to 6 mo old, the prevalence of infection was 6-8% but sharply increased to 31% by 8 mo of age. In older animals, the prevalence remained high, and was almost 100% in animals greater than 17 mo of age. Based on calves and heifers sampled twice, the cumulative incidence varied widely among herds ranging from 3.7% to 96.0% and increased with age of animals. There was no difference in hematocrit or number of lymphocytes, monocytes, neutrophils, or total leukocytes based on infection status. The number of eosinophils was greater in infected animals. This is the first study to report the prevalence of hemoplasmas in calves and replacement heifers in the US It indicates that young calves can be infected with hemoplasmas, but the rate of infection is low. The likelihood of infection increases as animals age, with a notable rise in the proportion of infected heifers occurring by 8 mo old and the prevalence eventually reaching nearly 100% of infection in older animals. Once infected, heifers appear to remain chronic carriers. Hemoplasma infection alone does not usually lead to the development of clinical signs and most of the animals remain apparently healthy.
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Affiliation(s)
- L de Souza Ferreira
- Department of Large Animal Clinical Sciences, Michigan State University, E. Lansing, 48824
| | - S Bolin
- Veterinary Diagnostic Laboratory, Michigan State University, Lansing 48910
| | - A Abuelo
- Department of Large Animal Clinical Sciences, Michigan State University, E. Lansing, 48824
| | - B Norby
- Department of Large Animal Clinical Sciences, Michigan State University, E. Lansing, 48824
| | - P L Ruegg
- Department of Large Animal Clinical Sciences, Michigan State University, E. Lansing, 48824.
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Pluta A, Rola-Łuszczak M, Hoffmann FG, Donnik I, Petropavlovskiy M, Kuźmak J. Genetic Variability of Bovine Leukemia Virus: Evidence of Dual Infection, Recombination and Quasi-Species. Pathogens 2024; 13:178. [PMID: 38392916 PMCID: PMC10893129 DOI: 10.3390/pathogens13020178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Revised: 01/23/2024] [Accepted: 02/13/2024] [Indexed: 02/25/2024] Open
Abstract
We have characterized the intrahost genetic variation in the bovine leukemia virus (BLV) by examining 16 BLV isolates originating from the Western Siberia-Tyumen and South Ural-Chelyabinsk regions of Russia. Our research focused on determining the genetic composition of an 804 bp fragment of the BLV env gene, encoding for the entire gp51 protein. The results provide the first indication of the quasi-species genetic nature of BLV infection and its relevance for genome-level variation. Furthermore, this is the first phylogenetic evidence for the existence of a dual infection with BLV strains belonging to different genotypes within the same host: G4 and G7. We identified eight cases of recombination between these two BLV genotypes. The detection of quasi-species with cases of dual infection and recombination indicated a higher potential of BLV for genetic variability at the intra-host level than was previously considered.
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Affiliation(s)
- Aneta Pluta
- Department of Biochemistry, National Veterinary Research Institute, 24-100 Puławy, Poland; (M.R.-Ł.); (J.K.)
| | - Marzena Rola-Łuszczak
- Department of Biochemistry, National Veterinary Research Institute, 24-100 Puławy, Poland; (M.R.-Ł.); (J.K.)
| | - Federico G. Hoffmann
- Department of Biochemistry, Molecular Biology, Entomology and Plant Pathology, Mississippi State University, Starkville, MS 39762, USA;
- Institute for Genomics, Biocomputing and Biotechnology, Mississippi State University, Starkville, MS 39762, USA
| | - Irina Donnik
- Ural State Agrarian University, Ekaterinburg 620075, Russia;
| | - Maxim Petropavlovskiy
- Ural Federal Agrarian Scientific Research Centre of the Ural Branch of the Russian Academy of Sciences, Ekaterinburg 620049, Russia;
| | - Jacek Kuźmak
- Department of Biochemistry, National Veterinary Research Institute, 24-100 Puławy, Poland; (M.R.-Ł.); (J.K.)
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Shrestha S, Orsel K, Barkema HW, Martins L, Shrestha S, van der Meer F. Effects of bovine leukemia virus seropositivity and proviral load on milk, fat, and protein production of dairy cows. J Dairy Sci 2024; 107:530-539. [PMID: 37709045 DOI: 10.3168/jds.2023-23695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Accepted: 08/22/2023] [Indexed: 09/16/2023]
Abstract
The objective was to evaluate the effects of bovine leukemia virus (BLV) infection, as determined by BLV seropositivity and proviral load, on 305-d milk, fat, and protein production of dairy cows. A cross-sectional study was conducted among 1,712 cows from 9 dairy herds in Alberta, Canada. The BLV status was assessed using an antibody ELISA, whereas BLV proviral load in BLV-seropositive cattle was determined with quantitative PCR. Dairy Herd Improvement 305-d milk, fat, and protein production data were obtained for all enrolled cattle. Differences in these milk end points were assessed in 2 ways: first, by categorizing cows based on BLV serostatus (i.e., BLV positive or negative), and second, by categorizing based on BLV proviral load (i.e., BLV negative, low proviral load [LPL] BLV positive, and high proviral load [HPL] BLV positive). A mixed-effect multivariable linear regression model was used to assess differences in milk parameters. We found that BLV positivity, adjusted for parity and natural log-transformed somatic cell count (SCC), was not associated with reduction in 305-d milk, fat, or protein production. However, significant reductions in 305-d milk, fat, and protein yield occurred in HPL cows, but not in LPL cows, compared with BLV-negative cows, when adjusted for parity number and natural log-transformed SCC. In summary, BLV proviral load may predict effects of BLV infection on milk, fat, and protein production.
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Affiliation(s)
- Sulav Shrestha
- Faculty of Veterinary Medicine, University of Calgary, Calgary, AB, Canada T2N 4N1.
| | - Karin Orsel
- Faculty of Veterinary Medicine, University of Calgary, Calgary, AB, Canada T2N 4N1
| | - Herman W Barkema
- Faculty of Veterinary Medicine, University of Calgary, Calgary, AB, Canada T2N 4N1; Cumming School of Medicine, University of Calgary, Calgary, AB, Canada T2N 4N1
| | - Larissa Martins
- Faculty of Veterinary Medicine, University of Calgary, Calgary, AB, Canada T2N 4N1
| | - Samita Shrestha
- Cumming School of Medicine, University of Calgary, Calgary, AB, Canada T2N 4N1
| | - Frank van der Meer
- Faculty of Veterinary Medicine, University of Calgary, Calgary, AB, Canada T2N 4N1
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Lian S, Liu P, Li X, Lv G, Song J, Zhang H, Wu R, Wang D, Wang J. BLV-miR-B1-5p Promotes Staphylococcus aureus Adhesion to Mammary Epithelial Cells by Targeting MUC1. Animals (Basel) 2023; 13:3811. [PMID: 38136848 PMCID: PMC10741194 DOI: 10.3390/ani13243811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Revised: 11/27/2023] [Accepted: 11/30/2023] [Indexed: 12/24/2023] Open
Abstract
Bovine leukemia virus (BLV) is widely prevalent worldwide and can persistently infect mammary epithelial cells in dairy cows, leading to reduced cellular antimicrobial capacity. BLV-encoded microRNAs (BLV-miRNAs) can modify host genes and promote BLV replication. We previously showed that BLV-miR-B1-5p significantly promoted Staphylococcus aureus (S. aureus) adhesion to bovine mammary epithelial (MAC-T) cells; however, the pathway responsible for this effect remained unclear. This study aims to examine how BLV-miR-B1-5p promotes S. aureus adhesion to MAC-T cells via miRNA target gene prediction and validation. Target site prediction showed that BLV-miR-B1-5p could target the mucin family gene mucin 1 (MUC1). Real-time polymerase chain reaction, immunofluorescence, and dual luciferase reporter assay further confirmed that BLV-miR-B1-5p could target and inhibit the expression of MUC1 in bovine MAC-T cells while interfering with the expression of MUC1 promoted S. aureus adhesion to MAC-T cells. These results indicate that BLV-miR-B1-5p promotes S. aureus adhesion to mammary epithelial cells by targeting MUC1.
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Affiliation(s)
- Shuai Lian
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, China; (S.L.); (P.L.); (X.L.); (G.L.); (J.S.); (H.Z.); (R.W.)
- China Key Laboratory of Bovine Disease Control in Northeast China, Ministry of Agriculture and Rural Affairs, Daqing 163319, China
- Heilongjiang Provincial Key Laboratory of Prevention and Control of Bovine Diseases, Daqing 163319, China
| | - Pengfei Liu
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, China; (S.L.); (P.L.); (X.L.); (G.L.); (J.S.); (H.Z.); (R.W.)
- China Key Laboratory of Bovine Disease Control in Northeast China, Ministry of Agriculture and Rural Affairs, Daqing 163319, China
- Heilongjiang Provincial Key Laboratory of Prevention and Control of Bovine Diseases, Daqing 163319, China
| | - Xiao Li
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, China; (S.L.); (P.L.); (X.L.); (G.L.); (J.S.); (H.Z.); (R.W.)
- China Key Laboratory of Bovine Disease Control in Northeast China, Ministry of Agriculture and Rural Affairs, Daqing 163319, China
- Heilongjiang Provincial Key Laboratory of Prevention and Control of Bovine Diseases, Daqing 163319, China
| | - Guanxin Lv
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, China; (S.L.); (P.L.); (X.L.); (G.L.); (J.S.); (H.Z.); (R.W.)
- China Key Laboratory of Bovine Disease Control in Northeast China, Ministry of Agriculture and Rural Affairs, Daqing 163319, China
- Heilongjiang Provincial Key Laboratory of Prevention and Control of Bovine Diseases, Daqing 163319, China
| | - Jiahe Song
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, China; (S.L.); (P.L.); (X.L.); (G.L.); (J.S.); (H.Z.); (R.W.)
- China Key Laboratory of Bovine Disease Control in Northeast China, Ministry of Agriculture and Rural Affairs, Daqing 163319, China
- Heilongjiang Provincial Key Laboratory of Prevention and Control of Bovine Diseases, Daqing 163319, China
| | - Han Zhang
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, China; (S.L.); (P.L.); (X.L.); (G.L.); (J.S.); (H.Z.); (R.W.)
- China Key Laboratory of Bovine Disease Control in Northeast China, Ministry of Agriculture and Rural Affairs, Daqing 163319, China
- Heilongjiang Provincial Key Laboratory of Prevention and Control of Bovine Diseases, Daqing 163319, China
| | - Rui Wu
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, China; (S.L.); (P.L.); (X.L.); (G.L.); (J.S.); (H.Z.); (R.W.)
- China Key Laboratory of Bovine Disease Control in Northeast China, Ministry of Agriculture and Rural Affairs, Daqing 163319, China
- Heilongjiang Provincial Key Laboratory of Prevention and Control of Bovine Diseases, Daqing 163319, China
- College of Biology and Agriculture, Jiamusi University, Jiamusi 154007, China
| | - Di Wang
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, China; (S.L.); (P.L.); (X.L.); (G.L.); (J.S.); (H.Z.); (R.W.)
- China Key Laboratory of Bovine Disease Control in Northeast China, Ministry of Agriculture and Rural Affairs, Daqing 163319, China
- Heilongjiang Provincial Key Laboratory of Prevention and Control of Bovine Diseases, Daqing 163319, China
| | - Jianfa Wang
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, China; (S.L.); (P.L.); (X.L.); (G.L.); (J.S.); (H.Z.); (R.W.)
- China Key Laboratory of Bovine Disease Control in Northeast China, Ministry of Agriculture and Rural Affairs, Daqing 163319, China
- Heilongjiang Provincial Key Laboratory of Prevention and Control of Bovine Diseases, Daqing 163319, China
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11
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Pichardo-Matamoros D, Sevilla F, Elizondo-Salazar J, Jiménez-Sánchez C, Roldan ERS, Soler C, Gacem S, Valverde A. Exploration of semen quality analyzed by casa-mot systems of brahman bulls infected with BLV and BHV-1. Sci Rep 2023; 13:18659. [PMID: 37907654 PMCID: PMC10618460 DOI: 10.1038/s41598-023-45981-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Accepted: 10/26/2023] [Indexed: 11/02/2023] Open
Abstract
Enzootic bovine leukosis virus (BLV) and bovine herpesvirus 1 (BHV-1) are very important infectious agents for the livestock industry worldwide. The present study aimed to explore the association between natural exposure to BLV and BHV-1 with sperm quality analyzed by Computer-Assisted Semen Analysis (CASA) systems. Ten sexually mature Brahman bulls, with sanitary status BLV+/BHV-1+ (n = 2), BLV-/BHV-1+ (n = 6) and BLV-/BHV-1- (n = 2) were evaluated twice, 30 days apart. Results showed that sanitary status of each bull was not associated with semen quality. It was found that the quality of the semen from the second collection was better due to the interruption of sexual rest. The evidence thus revealed that a bull infected with BLV generated good-quality contaminated semen and, therefore, that it is essential to detect contaminated seminal samples to prevent the spread of BLV. A multivariate analysis showed the presence of four sperm subpopulations in Brahman bulls that differ significantly in their kinematic patterns and with respect to sanitary status (P < 0.05), indicating that infection-free and seronegative bulls present the best kinematic parameters, which improved discrimination of sperm quality according to sanitary status. Overall, the analyses indicate that the seropositive-infected bulls with BLV and BHV-1 should be excluded from beef cattle farms.
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Affiliation(s)
- Derling Pichardo-Matamoros
- National Agrarian University, Juigalpa Campus, Chontales, 55000, Nicaragua
- Graduate Program in Agricultural Sciences and Natural Resources, University of Costa Rica, 11501, San Pedro de Montes de Oca, Costa Rica
| | - Francisco Sevilla
- Animal Reproduction Laboratory, School of Agronomy, Costa Rica Institute of Technology, San Carlos Campus, Alajuela, 223-21002, Costa Rica
| | - Jorge Elizondo-Salazar
- Faculty of Agri-Food Sciences, Alfredo Volio Mata Experimental Station, University of Costa Rica, 30304, Cartago, Costa Rica
| | - Carlos Jiménez-Sánchez
- Tropical Diseases Research Program, Faculty of Health Sciences, Veterinary Medicine School, National University of Costa Rica, Benjamín Núñez Campus, 40101, Barreal de Heredia, Costa Rica
| | - Eduardo R S Roldan
- Department of Biodiversity and Evolutionary Biology, National Museum of Natural Sciences, Spanish National Research Council (CSIC), 28006, Madrid, Spain
| | - Carles Soler
- Department of Cellular Biology, Functional Biology and Physical Anthropology, University of Valencia, Campus Burjassot, C/Dr Moliner, 50, 46100, Valencia, Spain
| | - Sabrina Gacem
- Department of Cellular Biology, Functional Biology and Physical Anthropology, University of Valencia, Campus Burjassot, C/Dr Moliner, 50, 46100, Valencia, Spain
- Department of Animal Medicine and Surgery, Universitat Autònoma de Barcelona, Campus UAB, Edifici V, Bellaterra (Cerdanyola del Vallès), 08193, Barcelona, Spain
| | - Anthony Valverde
- Animal Reproduction Laboratory, School of Agronomy, Costa Rica Institute of Technology, San Carlos Campus, Alajuela, 223-21002, Costa Rica.
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12
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de Quadros DL, Ribeiro VA, Rezende MA, Maté YA, Gomes MA, Secchi K, Strottmann DM, Frandoloso R, Kreutz LC. Oncogenic viral DNA related to human breast cancer found on cattle milk and meat. Comp Immunol Microbiol Infect Dis 2023; 101:102053. [PMID: 37672958 DOI: 10.1016/j.cimid.2023.102053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Revised: 08/18/2023] [Accepted: 08/26/2023] [Indexed: 09/08/2023]
Abstract
Bovine leukemia virus (BLV) is a major cause of lymphoma in cattle and has been recently correlated to breast cancer in humans. How and whether BLV might reach humans remains unknown but it could be through cattle-derived milk and meat. Here our aim was to investigate whether BLV DNA could be found in fresh milk and raw meat destined to human consumption and whether anti-BLV antibodies could be detected in human blood at the same geographical region. Milk (n = 36) and meat (n = 54) samples were collected from cows knowingly seropositive or negative to BLV and evaluated by nested PCR targeting BLV tax gene. Human serum samples (n = 900) were tested by ELISA to detect anti-BLV antibodies. BLV DNA was detected in 39 % of the milk samples and in 32 % of meat samples from BLV positive cows. Anti-BLV antibodies were found in 4.1 % of the human serum samples. Our data further supports the hypothesis that BLV might cause a zoonotic infection and indicate that milk and meat from BLV-infected cattle might be considered a potential source of infection to humans.
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Affiliation(s)
- Daniel Lazzari de Quadros
- Universidade de Passo Fundo, Escola de Ciências Agrárias, Inovação e Negócios, Programa de Pós-Graduação em Bioexperimentação, Prédio G3, Campus I, Rodovia BR 285, Km 292, Bairro São José, 99052-900 Passo Fundo, RS, Brazil
| | - Vitoria Agnoletto Ribeiro
- Universidade de Passo Fundo, Escola de Ciências Agrárias, Inovação e Negócios, Programa de Pós-Graduação em Bioexperimentação, Prédio G3, Campus I, Rodovia BR 285, Km 292, Bairro São José, 99052-900 Passo Fundo, RS, Brazil
| | - Mariana Antunes Rezende
- Universidade de Passo Fundo, Escola de Ciências Agrárias, Inovação e Negócios, Programa de Pós-Graduação em Bioexperimentação, Prédio G3, Campus I, Rodovia BR 285, Km 292, Bairro São José, 99052-900 Passo Fundo, RS, Brazil
| | - Yasmin Ampese Maté
- Universidade de Passo Fundo, Escola de Ciências Agrárias, Inovação e Negócios, Programa de Pós-Graduação em Bioexperimentação, Prédio G3, Campus I, Rodovia BR 285, Km 292, Bairro São José, 99052-900 Passo Fundo, RS, Brazil
| | - Márcio Alexandro Gomes
- Universidade de Passo Fundo, Escola de Ciências Agrárias, Inovação e Negócios, Programa de Pós-Graduação em Bioexperimentação, Prédio G3, Campus I, Rodovia BR 285, Km 292, Bairro São José, 99052-900 Passo Fundo, RS, Brazil
| | - Katia Secchi
- Universidade de Passo Fundo, Escola de Ciências Agrárias, Inovação e Negócios, Programa de Pós-Graduação em Bioexperimentação, Prédio G3, Campus I, Rodovia BR 285, Km 292, Bairro São José, 99052-900 Passo Fundo, RS, Brazil
| | - Daisy Maria Strottmann
- Laboratório de Virologia Molecular, Instituto Carlos Chagas (ICC/Fiocruz), Rua Prof. Algacyr Munhoz Mader, 3773, CEP 81350-010 Curitiba, PR, Brazil
| | - Rafael Frandoloso
- Universidade de Passo Fundo, Escola de Ciências Agrárias, Inovação e Negócios, Programa de Pós-Graduação em Bioexperimentação, Prédio G3, Campus I, Rodovia BR 285, Km 292, Bairro São José, 99052-900 Passo Fundo, RS, Brazil
| | - Luiz Carlos Kreutz
- Universidade de Passo Fundo, Escola de Ciências Agrárias, Inovação e Negócios, Programa de Pós-Graduação em Bioexperimentação, Prédio G3, Campus I, Rodovia BR 285, Km 292, Bairro São José, 99052-900 Passo Fundo, RS, Brazil.
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13
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Ayaz Kök S, Üstün S, Taşkent Sezgin H. Diagnosis of Ruminant Viral Diseases with Loop-Mediated Isothermal Amplification. Mol Biotechnol 2023; 65:1228-1241. [PMID: 36719638 PMCID: PMC9888337 DOI: 10.1007/s12033-023-00674-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Accepted: 01/16/2023] [Indexed: 02/01/2023]
Abstract
Infectious diseases in livestock industry are major problems for animal health, food safety, and the economy. Zoonotic diseases from farm animals are significant threat to human population as well. These are notifiable diseases listed by the World Organization for Animal Health (OIE). Rapid diagnostic methods can help keep infectious diseases under control in herds. Loop-mediated isothermal amplification (LAMP) is a simple and rapid nucleic acid amplification method that is studied widely for detection of many infectious diseases in the field. LAMP allows biosensing of target DNA or RNA under isothermal conditions with high specificity in a short period of time. An untrained user can analyze results based on color change or turbidity. Here we review LAMP assays to diagnose OIE notifiable ruminant viral diseases in literature highlighting properties of LAMP method considering what is expected from an efficient, field usable diagnostic test.
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Affiliation(s)
- Sanem Ayaz Kök
- Biotechnology Interdisciplinary Program, İzmir Institute of Technology, Gülbahçe, Urla, İzmir, Turkey, 35430
- New Era Biotechnology, Teknopark İzmir, Gülbahçe, Urla, İzmir, Turkey, 35430
| | - Selcen Üstün
- Bioengineering Department, İzmir Institute of Technology, Gülbahçe, Urla, İzmir, Turkey, 35430
| | - Hümeyra Taşkent Sezgin
- Biotechnology Interdisciplinary Program, İzmir Institute of Technology, Gülbahçe, Urla, İzmir, Turkey, 35430.
- New Era Biotechnology, Teknopark İzmir, Gülbahçe, Urla, İzmir, Turkey, 35430.
- Bioengineering Department, İzmir Institute of Technology, Gülbahçe, Urla, İzmir, Turkey, 35430.
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14
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Kemeter LM, Birzer A, Heym S, Thoma-Kress AK. Milk Transmission of Mammalian Retroviruses. Microorganisms 2023; 11:1777. [PMID: 37512949 PMCID: PMC10386362 DOI: 10.3390/microorganisms11071777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 07/02/2023] [Accepted: 07/05/2023] [Indexed: 07/30/2023] Open
Abstract
The transmission of viruses from one host to another typically occurs through horizontal or vertical pathways. The horizontal pathways include transmission amongst individuals, usually through bodily fluids or excretions, while vertical transmission transpires from mother to their offspring, either during pregnancy, childbirth, or breastfeeding. While there are more than 200 human pathogenic viruses to date, only a small number of them are known to be transmitted via breast milk, including cytomegalovirus (CMV), human immunodeficiency virus type 1 (HIV-1), and human T cell lymphotropic virus type 1 (HTLV-1), the latter two belonging to the family Retroviridae. Breast milk transmission is a common characteristic among mammalian retroviruses, but there is a lack of reports summarizing our knowledge regarding this route of transmission of mammalian retroviruses. Here, we provide an overview of the transmission of mammalian exogenous retroviruses with a focus on Orthoretrovirinae, and we highlight whether they have been described or suspected to be transmitted through breast milk, covering various species. We also elaborate on the production and composition of breast milk and discuss potential entry sites of exogenous mammalian retroviruses during oral transmission.
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Affiliation(s)
- Laura M Kemeter
- Institute of Clinical and Molecular Virology, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91054 Erlangen, Germany
| | - Alexandra Birzer
- Institute of Clinical and Molecular Virology, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91054 Erlangen, Germany
| | - Stefanie Heym
- Institute of Clinical and Molecular Virology, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91054 Erlangen, Germany
| | - Andrea K Thoma-Kress
- Institute of Clinical and Molecular Virology, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91054 Erlangen, Germany
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15
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Wu X, Notsu K, Matsuura Y, Mitoma S, El Daous H, Norimine J, Sekiguchi S. Development of droplet digital PCR for quantification of bovine leukemia virus proviral load using unpurified genomic DNA. J Virol Methods 2023; 315:114706. [PMID: 36849053 DOI: 10.1016/j.jviromet.2023.114706] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 02/23/2023] [Accepted: 02/24/2023] [Indexed: 02/27/2023]
Abstract
Bovine leukemia virus (BLV) is the causative agent of a B-cell tumor called enzootic bovine leukosis. Preventing BLV spreading is required to reduce economic loss related to BLV infection of livestock. To quantify proviral load (PVL) more easily and rapidly, we developed a quantification system of PVL using droplet digital PCR (ddPCR). This method uses a multiplex TaqMan assay of the BLV provirus and housekeeping gene RPP30 for the quantification of BLV in BLV-infected cells. Furthermore, we combined ddPCR with DNA purification-free sample preparation (unpurified genomic DNA). The percentage of BLV-infected cells based on unpurified genomic DNA was highly correlated with that based on purified genomic DNA (correlation coefficient: 0.906). Thus, this new technique is a suitable method to quantify PVL of BLV-infected cattle in a large sample number.
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Affiliation(s)
- Xinyue Wu
- Graduate School of Medicine and Veterinary Medicine, University of Miyazaki, Miyazaki 889-1692, Japan.
| | - Kousuke Notsu
- Graduate School of Medicine and Veterinary Medicine, University of Miyazaki, Miyazaki 889-1692, Japan.
| | - Yuichi Matsuura
- Division of Infectious Animal Diseases, National Institute of Animal Health, National Agriculture and Food Research Organization, Ibaraki 305-0856, Japan.
| | - Shuya Mitoma
- Division of Immunology, Department of Infectious disease, Faculty of Medicine, University of Miyazaki, Japan.
| | - Hala El Daous
- Faculty of Veterinary Medicine, Benha University, Toukh 13736, Egypt
| | - Junzo Norimine
- Department of Veterinary Science, Faculty of Agriculture, University of Miyazaki, Miyazaki 889-2192, Japan; Center for Animal Disease Control, University of Miyazaki, Miyazaki 889-2192, Japan.
| | - Satoshi Sekiguchi
- Department of Veterinary Science, Faculty of Agriculture, University of Miyazaki, Miyazaki 889-2192, Japan; Center for Animal Disease Control, University of Miyazaki, Miyazaki 889-2192, Japan.
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16
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Krutko KS, Kinareikina AG, Serkova MI, Silivanova EA, Fedorova OA. Detection of genetic material of causative agents of animal viral diseases in blood-sucking dipterans from the Tyumen Region. RUSSIAN JOURNAL OF PARASITOLOGY 2023. [DOI: 10.31016/1998-8435-2022-16-4-389-402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The purpose of the research is to test blood-sucking dipterans collected in the Tyumen Region for genetic material of viruses that cause dangerous diseases in live-stock animals.Materials and methods. From May to October 2021, blood-sucking insects of the Diptera order whose species membership was established by tabular keys were collected on pastures and farms in ten Tyumen Region districts. In 60 samples formed from the captured insects according to the taxonomic affiliation and the period and place of collection, the presence of genetic material of the leukemia provirus and the dermatitis nodularis virus of cattle (bovine) and the African swine fever virus was evaluated by polymerase chain reaction (PCR) in real time.Results and discussion. Adult insects collected for the PCR analysis were blood-sucking flies (family Muscidae, genus Stomoxys), mosquitoes (family Culicidae, genus Aedes), midges (family Simuliidae, genera Byssodon and Schoenbaueria), horseflies (family Tabanidae, genera Hybomitra, Tabanus and Haematopota), and biting midges (family Ceratopogonidae, genus Culicoides). As a result of the PCR testing of the samples for the bovine leukemia provirus DNA, 1 out of 13 samples of Stomoxys spp. (7.7%) and 1 of 13 samples of Hybomitra spp. (7.7%) were positive. The bovine leukemia provirus DNA detected in blood-sucking insects indicates the presence of this pathogen in the insect collection area as well as their possible involvement in its spread. Further research is needed on the Stomoxys spp. and Hybomitra spp. vector competence in vivo, considering natural and climatic features of the Tyumen Region.
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Affiliation(s)
- K. S. Krutko
- All-Russian Scientific Research Institute of Veterinary Entomology and Arachnology – Branch of Federal State Institution Federal Research Centre Tyumen Scientific Centre of Siberian Branch of the Russian Academy of Sciences (ASRIVEA – Branch of Tyumen Scientific Centre SB RAS)
| | - A. G. Kinareikina
- All-Russian Scientific Research Institute of Veterinary Entomology and Arachnology – Branch of Federal State Institution Federal Research Centre Tyumen Scientific Centre of Siberian Branch of the Russian Academy of Sciences (ASRIVEA – Branch of Tyumen Scientific Centre SB RAS)
| | - M. I. Serkova
- All-Russian Scientific Research Institute of Veterinary Entomology and Arachnology – Branch of Federal State Institution Federal Research Centre Tyumen Scientific Centre of Siberian Branch of the Russian Academy of Sciences (ASRIVEA – Branch of Tyumen Scientific Centre SB RAS)
| | - E. A. Silivanova
- All-Russian Scientific Research Institute of Veterinary Entomology and Arachnology – Branch of Federal State Institution Federal Research Centre Tyumen Scientific Centre of Siberian Branch of the Russian Academy of Sciences (ASRIVEA – Branch of Tyumen Scientific Centre SB RAS)
| | - O. A. Fedorova
- All-Russian Scientific Research Institute of Veterinary Entomology and Arachnology – Branch of Federal State Institution Federal Research Centre Tyumen Scientific Centre of Siberian Branch of the Russian Academy of Sciences (ASRIVEA – Branch of Tyumen Scientific Centre SB RAS)
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17
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Yang Y, Gong Z, Lu Y, Lu X, Zhang J, Meng Y, Peng Y, Chu S, Cao W, Hao X, Sun J, Wang H, Qin A, Wang C, Shang S, Yang Z. Dairy Cows Experimentally Infected With Bovine Leukemia Virus Showed an Increased Milk Production in Lactation Numbers 3–4: A 4-Year Longitudinal Study. Front Microbiol 2022; 13:946463. [PMID: 35898913 PMCID: PMC9309534 DOI: 10.3389/fmicb.2022.946463] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Accepted: 06/20/2022] [Indexed: 11/29/2022] Open
Abstract
Bovine leukemia virus (BLV) is widespread in global cattle populations, but the effects of its infection on milk quantity and quality have not been clearly elucidated in animal models. In this study, 30 healthy first-lactation cows were selected from ≈2,988 cows in a BLV-free farm with the same criteria of parity, age, lactation number, as well as milk yield, SCS, and composition (fat, protein, and lactose). Subsequently, these cows were randomly assigned to the intervention (n = 15) or control (n = 15) group, and reared in different cowsheds. Cows in the intervention group were inoculated with 1 × phosphate-buffered solution (PBS) resuspended in peripheral blood mononuclear cells (PBMC) from a BLV-positive cow, while the controls were inoculated with the inactivated PBMC from the same individual. From June 2016 to July 2021, milk weight (kg) was automatically recorded by milk sensors, and milk SCS and composition were originated from monthly performed dairy herd improvement (DHI) testing. Fluorescence resonance energy transfer (FRET)–qPCR and ELISA showed that cows in the intervention group were successfully infected with BLV, while cows in the control group were free of BLV for the entire period. At 45 days post-inoculation (DPI), the numbers of whole blood cells (WBCs) (P = 0.010), lymphocytes (LYMs) (P = 0.002), and monocytes (MNCs) (P = 0.001) and the expression levels of IFN-γ (P = 0.013), IL-10 (P = 0.031), and IL-12p70 (P = 0.008) increased significantly in the BLV infected cows compared to the non-infected. In lactation numbers 2–4, the intervention group had significantly higher overall milk yield (P < 0.001), fat (P = 0.031), and protein (P = 0.050) than the control group, while milk SCS (P = 0.038) and lactose (P = 0.036) decreased significantly. Further analysis indicated that BLV infection was associated with increased milk yield at each lactation stage in lactation numbers 3–4 (P = 0.021 or P < 0.001), but not with SCS and milk composition. Together, this 4-year longitudinal study revealed that artificial inoculation of BLV increased the milk yield in cows in this BLV challenge model.
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Affiliation(s)
- Yi Yang
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, College of Veterinary Medicine, Yangzhou University, Yangzhou, China
- International Corporation Laboratory of Agriculture and Agricultural Products Safety, Yangzhou University, Yangzhou, China
- *Correspondence: Yi Yang
| | - Zaicheng Gong
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, College of Veterinary Medicine, Yangzhou University, Yangzhou, China
| | - Yi Lu
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, College of Veterinary Medicine, Yangzhou University, Yangzhou, China
| | - Xubin Lu
- College of Animal Science and Technology, Yangzhou University, Yangzhou, China
| | - Jilei Zhang
- Division of Gastroenterology and Hepatology, Department of Medicine, University of Illinois at Chicago, Chicago, IL, United States
| | - Ye Meng
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, College of Veterinary Medicine, Yangzhou University, Yangzhou, China
| | - Yalan Peng
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, College of Veterinary Medicine, Yangzhou University, Yangzhou, China
| | - Shuangfeng Chu
- College of Animal Science and Technology, Yangzhou University, Yangzhou, China
| | - Wenqiang Cao
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, College of Veterinary Medicine, Yangzhou University, Yangzhou, China
| | - Xiaoli Hao
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, College of Veterinary Medicine, Yangzhou University, Yangzhou, China
| | - Jie Sun
- Shenzhen Academy of Inspection and Quarantine Sciences, Shenzhen, China
| | - Heng Wang
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, College of Veterinary Medicine, Yangzhou University, Yangzhou, China
| | - Aijian Qin
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, College of Veterinary Medicine, Yangzhou University, Yangzhou, China
- International Corporation Laboratory of Agriculture and Agricultural Products Safety, Yangzhou University, Yangzhou, China
| | - Chengming Wang
- Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, AL, United States
| | - Shaobin Shang
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, College of Veterinary Medicine, Yangzhou University, Yangzhou, China
- International Corporation Laboratory of Agriculture and Agricultural Products Safety, Yangzhou University, Yangzhou, China
- Shaobin Shang
| | - Zhangping Yang
- College of Animal Science and Technology, Yangzhou University, Yangzhou, China
- Zhangping Yang
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Assessment of Natural Transmission of Bovine Leukemia Virus in Dairies from Southern Chile. Animals (Basel) 2022; 12:ani12131734. [PMID: 35804632 PMCID: PMC9264828 DOI: 10.3390/ani12131734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Revised: 06/29/2022] [Accepted: 07/04/2022] [Indexed: 11/17/2022] Open
Abstract
Simple Summary A longitudinal study was conducted to describe the frequency and epidemiological association of risk management practices related to new cases of BLV in cattle on dairy farms in Southern Chile. Animal information was obtained from the records of each farm, as well as blood and milk samples that, tested by commercial blocking ELISA to assess the infection status of animals. A higher number of new cases was found in adult animals that were related to practices, such as rectal palpation, artificial insemination, and injections. However, it is important to carry out other studies that establish the role of management practices in the spreading of BLV to improve the control of disease. Abstract Bovine leukemia virus (BLV) is a retrovirus that affects cattle worldwide. A longitudinal study was conducted with the aim to (a) estimate the incidence rate of the BLV infection of dairy farms in the regions of Los Ríos and Los Lagos (Chile), and (b) describe the frequency and epidemiological association of risk management practices related to new cases in cattle on dairy farms in Southern Chile. Infection status was based on commercial blocking ELISA results, on serum and milk. Individual information on animals and management practices was extracted from farm records, and then the most likely date of infection for new cases was estimated. The number of new infections was used to calculate the within-herd incidence rate. Adult animals had an incidence rate of 1.16 (95% CI 0.96; 1.20) cases per 100 cow-months at risk, while for young animals it was 0.64 (95% CI 0.44; 1.00) cases per 100 animal-months at risk. Rectal palpation, artificial insemination, and injections were the most common practices related to infection. Further studies are needed to determine if these are the only practices that facilitate spreading or if there are other practices that can be handled better in order to reduce the spread of BLV.
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De Brun ML, Cosme B, Petersen M, Alvarez I, Folgueras-Flatschart A, Flatschart R, Panei CJ, Puentes R. Development of a droplet digital PCR assay for quantification of the proviral load of bovine leukemia virus. J Vet Diagn Invest 2022; 34:439-447. [PMID: 35369822 PMCID: PMC9254064 DOI: 10.1177/10406387221085581] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Droplet digital PCR (ddPCR) is a highly sensitive tool developed for the detection and quantification of short-sequence variants—a tool that offers unparalleled precision enabling measurement of smaller-fold changes. We describe here the use of ddPCR for the detection of Bovine leukemia virus (BLV) DNA provirus. Serum samples and whole blood from experimentally infected sheep and naturally infected cattle were analyzed through ddPCR to detect the BLV gp51 gene, and then compared with serologic and molecular tests. The ddPCR assay was significantly more accurate and sensitive than AGID, ELISA, nested PCR, and quantitative PCR. The limit of detection of ddPCR was 3.3 copies/µL, detecting positive experimentally infected sheep beginning at 6 d post-infection. The ddPCR methodology offers a promising tool for evaluating the BLV proviral load, particularly for the detection of low viral loads.
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Affiliation(s)
- María L. De Brun
- Instituto de Patobiología, Unidad de Microbiología, Facultad de Veterinaria–Universidad de la República, Montevideo, Uruguay
| | - Bruno Cosme
- Instituto Nacional de Metrología, Calidad y Tecnología (Inmetro), Rio de Janeiro, Brazil
| | - Marcos Petersen
- Instituto Nacional de Tecnología Agropecuaria (INTA), Instituto de Virología e Innovaciones Tecnológicas (IVIT), Buenos Aires, Argentina
| | - Irene Alvarez
- Instituto Nacional de Tecnología Agropecuaria (INTA), Instituto de Virología e Innovaciones Tecnológicas (IVIT), Buenos Aires, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | | | - Roberto Flatschart
- Instituto Nacional de Metrología, Calidad y Tecnología (Inmetro), Rio de Janeiro, Brazil
| | - Carlos Javier Panei
- Laboratorio de Virología, Facultad de Ciencias Veterinarias, Universidad Nacional de la Plata (FCV-UNLP), La Plata, Argentina
| | - Rodrigo Puentes
- Instituto de Patobiología, Unidad de Microbiología, Facultad de Veterinaria–Universidad de la República, Montevideo, Uruguay
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Nakanishi R, Takashima S, Wakihara Y, Kamatari YO, Kitamura Y, Shimizu K, Okada A, Inoshima Y. Comparing microRNA in milk small extracellular vesicles among healthy cattle and cattle at high risk for bovine leukemia virus transmission. J Dairy Sci 2022; 105:5370-5380. [DOI: 10.3168/jds.2021-20989] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2021] [Accepted: 02/24/2022] [Indexed: 12/19/2022]
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21
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Kuczewski A, Adams C, Lashewicz B, van der Meer F. Alberta dairy farmers’ and veterinarians’ opinion about bovine leukemia virus control measures. Prev Vet Med 2022; 200:105590. [DOI: 10.1016/j.prevetmed.2022.105590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 12/22/2021] [Accepted: 01/23/2022] [Indexed: 11/30/2022]
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