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Zhao B, Che D, Adams S, Guo N, Han R, Zhang C, Qin G, Farouk MH, Jiang H. N-Acetyl-d-galactosamine prevents soya bean agglutinin-induced intestinal barrier dysfunction in intestinal porcine epithelial cells. J Anim Physiol Anim Nutr (Berl) 2019; 103:1198-1206. [PMID: 30934149 DOI: 10.1111/jpn.13091] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2018] [Revised: 02/25/2019] [Accepted: 02/25/2019] [Indexed: 12/23/2022]
Abstract
Soya bean agglutinin (SBA) is a glycoprotein and the main anti-nutritional component in most soya bean feedstuffs. It is mainly a non-fibre carbohydrate-based protein and represents about 10% of soya bean-based anti-nutritional effects. In this study, we sought to determine the effects of N-Acetyl-D-galactosamine (GalNAc or D-GalNAc) on the damage induced by SBA on the membrane permeability and tight junction proteins of piglet intestinal epithelium (IPEC-J2) cells. The IPEC-J2 cells were pre-cultured with 0, 0.125 × 10-4 , 0.25 × 10-4 , 0.5 × 10-4 , 1.0 × 10-4 and 2.0 × 10-4 mmol/L GalNAc at different time period (1, 2, 4 and 8 hr) before being exposed to 0.5 mg/ml SBA for 24 hr. The results indicate that pre-incubation with GalNAc mitigates the mechanical barrier injury as reflected by a significant increase in trans-epithelial electric resistance (TEER) value and a decrease in alkaline phosphatase (ALP) activity in cell culture medium pre-treated with GalNAc before incubation with SBA as both indicate a reduction in cellular membrane permeability. In addition, mRNA levels of the tight junction proteins occludin and claudin-3 were lower in the SBA-treated groups without pre-treatment with GalNAc. The mRNA expression of occludin was reduced by 17.3% and claudin-3 by 42% (p < 0.01). Moreover, the corresponding protein expression levels were lowered by 17.8% and 43.5% (p < 0.05) respectively. However, in the GalNAc pre-treated groups, occludin and claudin-3 mRNAs were reduced by 1.6% (p > 0.05) and 2.7% (p < 0.01), respectively, while the corresponding proteins were reduced by 4.3% and 7.2% (p < 0.05). In conclusion, GalNAc may prevent the effect of SBA on membrane permeability and tight junction proteins on IPEC-J2s.
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Affiliation(s)
- Bao Zhao
- Jilin Provincial Key Laboratory of Animal Nutrition and Feed Science, Jilin Agricultural University, Changchun, China
- Department of Animal Science and Technology, Jilin Agricultural University, Changchun, China
| | - Dongsheng Che
- Jilin Provincial Key Laboratory of Animal Nutrition and Feed Science, Jilin Agricultural University, Changchun, China
- Department of Animal Science and Technology, Jilin Agricultural University, Changchun, China
| | - Seidu Adams
- Jilin Provincial Key Laboratory of Animal Nutrition and Feed Science, Jilin Agricultural University, Changchun, China
- Department of Animal Science and Technology, Jilin Agricultural University, Changchun, China
| | - Nan Guo
- Jilin Provincial Key Laboratory of Animal Nutrition and Feed Science, Jilin Agricultural University, Changchun, China
- Department of Animal Science and Technology, Jilin Agricultural University, Changchun, China
| | - Rui Han
- Jilin Provincial Key Laboratory of Animal Nutrition and Feed Science, Jilin Agricultural University, Changchun, China
- Department of Animal Science and Technology, Jilin Agricultural University, Changchun, China
| | - Chun Zhang
- Department of Animal Science and Technology, Changchun University of science and technology, Changchun, China
| | - Guixin Qin
- Jilin Provincial Key Laboratory of Animal Nutrition and Feed Science, Jilin Agricultural University, Changchun, China
- Department of Animal Science and Technology, Jilin Agricultural University, Changchun, China
| | - Mohammed Hamdy Farouk
- Department of Animal Production, Faculty of Agriculture, Al-Azhar University, Cairo, Egypt
| | - Hailong Jiang
- Jilin Provincial Key Laboratory of Animal Nutrition and Feed Science, Jilin Agricultural University, Changchun, China
- Department of Animal Science and Technology, Jilin Agricultural University, Changchun, China
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Weyers A, Yang B, Park JH, Kim YS, Kim SM, Lee SE, Zhang F, Lee KB, Linhardt RJ. Microanalysis of stomach cancer glycosaminoglycans. Glycoconj J 2013; 30:701-7. [PMID: 23604988 DOI: 10.1007/s10719-013-9476-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2013] [Revised: 03/17/2013] [Accepted: 04/08/2013] [Indexed: 11/27/2022]
Abstract
Glycosaminoglycans (GAGS) are anionic, linear, polysaccharides involved in cell signaling. The GAG content, composition and structure of human tissue have been suggested to play a role in cancer and might provide useful diagnostic or prognostic markers. The current study examines 17 stomach tissue biopsy samples taken from normal individuals and from patients with gastric cancers. An ultrasensitive liquid chromatography (LC) - mass spectrometry assay was applied to individual biopsy samples as small 250 μg providing GAG content and disaccharide composition. The results of these analyses show a significant increase in non-sulfated chondroitin/dermatan sulfate concentration in all cancer samples when compared to normal tissues. In addition in advanced gastric cancer, a significant decrease is observed in hyaluronan.
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Affiliation(s)
- Amanda Weyers
- Department of Chemistry and Chemical Biology, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, 110 8th Street, Troy, NY, 12180, USA
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Maury CP, Törnroth T, Teppo AM. Atrophic gastritis in Sjögren's syndrome. Morphologic, biochemical, and immunologic findings. ARTHRITIS AND RHEUMATISM 1985; 28:388-94. [PMID: 3885959 DOI: 10.1002/art.1780280406] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Gastric studies were carried out in 16 patients with well-documented Sjögren's syndrome (SS), 43 matched rheumatic disease patients without SS, and 7 patients with chronic atrophic gastritis not associated with SS. Chronic atrophic gastritis was a much more common finding in the SS patients than in the rheumatic disease control patients. Significant hypopepsinogenemia was present in 11 of 16 SS patients. In 6 patients this was combined with hypergastrinemia, a combination highly specific for chronic atrophic gastritis. The lowest pepsinogen levels were seen in patients with primary SS associated with high levels of SS-B antibody. On a histologic and biochemical basis, it was not possible to distinguish the gastric findings in primary SS from those in secondary SS, nor to distinguish chronic atrophic gastritis associated with SS from that not associated with SS. We conclude that chronic atrophic gastritis is a prominent feature in SS and that the severity of the gastritis appears to correlate with some serologic parameters of SS.
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