1
|
Liu RN, Zou DM, Tian MY, Li K, Du JL, Liu MJ, Ma YZ. Effect of magnesium ammonium phosphate on the expression of adhesion molecules in sheep renal tubular epithelial cells. Res Vet Sci 2021; 138:167-177. [PMID: 34153557 DOI: 10.1016/j.rvsc.2021.05.021] [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: 10/20/2020] [Revised: 03/29/2021] [Accepted: 05/25/2021] [Indexed: 11/28/2022]
Abstract
Adhesion molecules play an important role in urinary calculus formation. The expressions of adhesion molecules in renal tubular has been reported in some animals. However, the role of adhesion molecules in the process of sheep urinary calculus formation is still unclear. The magnesium ammonium phosphate (MAP) is the main component of sheep urinary calculus. In this paper, the sheep renal tubular epithelial cells (RTECs) were isolated and treated with MAP, the expressions of osteopontin (OPN), intercellular adhesion molecule-1 (ICAM-1), vascular cell adhesion molecule-1 (VCAM-1) and apoptosis-related indicators caspase-3, Bcl-2 and Bax in RTECs were observed, the viability of RTECs was detected by Cell Counting Kit-8 (CCK-8). The levels of superoxide dismutase (SOD) and malondialdehyde (MDA), and the expressions of inflammatory factors Interleukin-6 (IL-6), Interleukin-1 (IL-1), Interleukin-17 (IL-17) and tumor necrosis factor-α (TNF-α) were measured by enzyme-linked immunosorbent (ELISA). The histopathological observation of kidney in urolithiasis sheep was made. The results showed that MAP could reduce the viability and SOD activity, enhance the activity of MDA significantly and promote the expressions of IL-1, IL-6, IL-17 and TNF-α of RTECs. By western blot and qPCR methods, the expressions of ICAM-1, VCAM-1 and OPN increased in 48 h. In addition, the expression of caspase-3 increased significantly and the ratio of Bcl-2/Bax reduced with exposure to MAP. The renal tissue structure was seriously damaged, the RTECs in urolithiasis sheep were degenerative and necrotic.
Collapse
Affiliation(s)
- Ruo-Nan Liu
- College of Veterinary Medicine, Hebei Agricultural University, 2596 Lekai South Street, Baoding, Hebei 071000, China
| | - Dong-Min Zou
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, China
| | - Meng-Yue Tian
- College of Veterinary Medicine, Hebei Agricultural University, 2596 Lekai South Street, Baoding, Hebei 071000, China
| | - Ke Li
- College of Veterinary Medicine, Hebei Agricultural University, 2596 Lekai South Street, Baoding, Hebei 071000, China
| | - Jin-Liang Du
- College of Veterinary Medicine, Hebei Agricultural University, 2596 Lekai South Street, Baoding, Hebei 071000, China.; International Joint Research Laboratory for Fish Immunopharmacology, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi, Jiangsu 214081, China
| | - Mao-Jun Liu
- Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Nanjing, Jiangsu 210014, China
| | - Yu-Zhong Ma
- College of Veterinary Medicine, Hebei Agricultural University, 2596 Lekai South Street, Baoding, Hebei 071000, China..
| |
Collapse
|
2
|
Abstract
Cholangiocytes, the epithelial cells lining bile ducts, provide the first line of defense against lumenal microbes in the biliary system. Recent advances in biliary immunity indicate that cholangiocytes express a variety of pathogen-recognition receptors and can activate a set of intracellular signaling cascades to initiate a profound antimicrobial defense, including release of proinflammatory cytokines and chemokines, production of antimicrobial peptides and maintenance of biliary epithelial integrity. Cholangiocytes also interact with other cell types in the liver (for example, lymphocytes and Kupffer cells) through expression and release of adhesion molecules and immune mediators. Subsequently, through an intricate feedback mechanism involving both epithelial and other liver cells, a set of intracellular signaling pathways are activated to regulate the functional state of cholangiocyte responses during microbial infection. Thus, cholangiocytes are actively involved in mucosal immunity of the biliary system and represent a fine-tuned, integral component of liver immunity.
Collapse
|
3
|
Martinez-Mier G, Toledo-Pereyra LH, Ward PA. Adhesion molecules in liver ischemia and reperfusion. J Surg Res 2000; 94:185-94. [PMID: 11104660 DOI: 10.1006/jsre.2000.6006] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- G Martinez-Mier
- Surgery Research Sciences and Molecular Biology, Borgess Research Institute, Kalamazoo, Michigan 49001, USA
| | | | | |
Collapse
|