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Park S, Cho ES, Kim CH, Lee S, Jeong YD, Park M, Kim D, Seo D, Kim YH, Hochi S, Choi I, Chung HJ. Detection of sow pregnancy in day-20 urine samples using monoclonal antibody against synthesized porcine early pregnancy factor: Preliminary results. Theriogenology 2024; 229:23-29. [PMID: 39142067 DOI: 10.1016/j.theriogenology.2024.08.004] [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: 01/17/2024] [Revised: 08/04/2024] [Accepted: 08/04/2024] [Indexed: 08/16/2024]
Abstract
Early diagnosis of pregnancy is directly related to cost-effective livestock production. We produced a rat monoclonal antibody (mAb) against synthesized porcine early pregnancy factor (pEPF) using conventional hybridoma technology and used it as a tool for the detection of early pregnancy in Duroc sows. The rat pEPF-mAb showed reactivity to uterine tissues of pregnant sows 20 or 30 days post-mating (day 0 defined as the day of mating) and non-pregnant sows (confirmed signs of estrus) in western blotting. Immunohistochemical analysis confirmed that pEPF was located in the stromal and grand epithelial tissues of pregnant sows 20 or 30 days post-mating. In the enzyme-linked immunosorbent assay, pEPF expression in urine and blood showed similar results, with the highest expression observed in pregnant sows 20 days post-mating, whereas there was no significant difference in expression levels between non-pregnant sows and pregnant sows 30 days post-mating. The pEPF-mAb-based pregnancy diagnostic kit can be applied to pig urine samples non-invasively collected at 20 days post-mating with 70 % accuracy. Further improvements to the kit's diagnostic performance may lead to substantial benefits for the swine industry, facilitating more efficient and accurate reproductive management.
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Affiliation(s)
- Sungwoo Park
- Swine Science Division, National Institute of Animal Science, Cheonan-si, 31000, Republic of Korea; College of Agriculture and Life Sciences, Chungnam National University, Daejeon-si, 34134, Republic of Korea
| | - Eun-Seok Cho
- Swine Science Division, National Institute of Animal Science, Cheonan-si, 31000, Republic of Korea
| | - Chae-Hyun Kim
- Swine Science Division, National Institute of Animal Science, Cheonan-si, 31000, Republic of Korea
| | - Seunghoon Lee
- Animal Biotechnology Division, National Institute of Animal Science, Wanju-gun, 55365, Republic of Korea
| | - Yong-Dae Jeong
- Swine Science Division, National Institute of Animal Science, Cheonan-si, 31000, Republic of Korea
| | - Myunghum Park
- R&D Center, TNT Research Co., Sejeong-si, 30141, Republic of Korea
| | - Dongjun Kim
- R&D Center, TNT Research Co., Sejeong-si, 30141, Republic of Korea
| | - Dongwon Seo
- R&D Center, TNT Research Co., Sejeong-si, 30141, Republic of Korea
| | - Yeon-Ho Kim
- Swine Science Division, National Institute of Animal Science, Cheonan-si, 31000, Republic of Korea
| | - Shinichi Hochi
- Faculty of Textile Science and Technology, Shinshu University, Nagano, 386-8567, Japan
| | - Inchul Choi
- College of Agriculture and Life Sciences, Chungnam National University, Daejeon-si, 34134, Republic of Korea.
| | - Hak-Jae Chung
- R&D Center, TNT Research Co., Sejeong-si, 30141, Republic of Korea.
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HAMA N, KANEMITSU H, SAKAMOTO K, OYAMA Y, ACOSTA TJ, ISHIKAWA O, PENGYAN W, OKUDA K. Development and Evaluation of a Rapid Enzyme-immunoassay System for Measurement of the Urinary Concentration of Estrone-3-glucuronide in a Female Giant Panda (Ailuropoda melanoleuca). J Reprod Dev 2008; 54:281-5. [DOI: 10.1262/jrd.19166] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- Natsuki HAMA
- Graduate School of Natural Science and Technology, Okayama University
- Kobe Municipal Oji Zoo
| | | | | | | | - Tomas J. ACOSTA
- Graduate School of Natural Science and Technology, Okayama University
| | | | - Wang PENGYAN
- China Research and Conservation Center for the Giant Panda
| | - Kiyoshi OKUDA
- Graduate School of Natural Science and Technology, Okayama University
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