Digestive Enzyme Activities and Gut Emptying Are Correlated with the Reciprocal Regulation of TRPA1 Ion Channel and Serotonin in the Gut of the Sea Urchin <i>Strongylocentrotus intermedius</i>
The energetic link in the benthic community is based on physiological characteristics of the low food absorption efficiency of sea urchins. Low food absorption efficiency of sea urchins is correlated with the activity of digestive enzymes and the duration of food in their gut. Thus, the digestive en...
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MDPI AG
2022-03-01
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| author | Jingyun Ding Huiyan Wang Zequn Li Jiangnan Sun Peng Ding Xiaomei Chi Mingfang Yang Yaqing Chang Chong Zhao |
| author_facet | Jingyun Ding Huiyan Wang Zequn Li Jiangnan Sun Peng Ding Xiaomei Chi Mingfang Yang Yaqing Chang Chong Zhao |
| author_sort | Jingyun Ding |
| collection | DOAJ |
| description | The energetic link in the benthic community is based on physiological characteristics of the low food absorption efficiency of sea urchins. Low food absorption efficiency of sea urchins is correlated with the activity of digestive enzymes and the duration of food in their gut. Thus, the digestive enzymes activities (pepsin and amylase enzyme activities) and gut emptying are important indicators in assessing nutrient digestion and absorption in sea urchins. In the present study, the relationship between these indicators and molecules related to digestive physiology were quantified in sea urchins. We found (1) an inter-regulatory relationship existed between Transient receptor potential cation channel, subfamily A, member 1 (TRPA1), and serotonin (5-hydroxytryptamine; 5-HT) in the gut of <i>Strongylocentrotus intermedius</i>; (2) digestive enzyme activities were negatively correlated with the TRPA1 and concentration of 5-HT in the gut of <i>S. intermedius</i>; (3) gut emptying rate was positively correlated with TRPA1 and concentration of 5-HT in the gut of <i>S. intermedius</i>. The present study revealed that the digestion and absorption of food are correlated with the TRPA1 and 5-HT in the gut of <i>S. intermedius</i>, which provides valuable information about the digestive physiology of sea urchins. This novel finding is relevant to understanding the low food digestibility of sea urchins. It also provides valuable information to the digestive physiology of sea urchins, which are key to maintaining the stability of food webs in the marine ecosystem. |
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| issn | 2079-7737 |
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| last_indexed | 2024-03-09T11:09:24Z |
| publishDate | 2022-03-01 |
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| series | Biology |
| spelling | doaj.art-c102784947f54ec58a880682920b12172023-12-01T00:50:35ZengMDPI AGBiology2079-77372022-03-0111450310.3390/biology11040503Digestive Enzyme Activities and Gut Emptying Are Correlated with the Reciprocal Regulation of TRPA1 Ion Channel and Serotonin in the Gut of the Sea Urchin <i>Strongylocentrotus intermedius</i>Jingyun Ding0Huiyan Wang1Zequn Li2Jiangnan Sun3Peng Ding4Xiaomei Chi5Mingfang Yang6Yaqing Chang7Chong Zhao8Key Laboratory of Mariculture & Stock Enhancement in North China’s Sea, Ministry of Agriculture and Rural Affairs, Dalian Ocean University, Dalian 116023, ChinaKey Laboratory of Mariculture & Stock Enhancement in North China’s Sea, Ministry of Agriculture and Rural Affairs, Dalian Ocean University, Dalian 116023, ChinaKey Laboratory of Mariculture & Stock Enhancement in North China’s Sea, Ministry of Agriculture and Rural Affairs, Dalian Ocean University, Dalian 116023, ChinaKey Laboratory of Mariculture & Stock Enhancement in North China’s Sea, Ministry of Agriculture and Rural Affairs, Dalian Ocean University, Dalian 116023, ChinaKey Laboratory of Mariculture & Stock Enhancement in North China’s Sea, Ministry of Agriculture and Rural Affairs, Dalian Ocean University, Dalian 116023, ChinaKey Laboratory of Mariculture & Stock Enhancement in North China’s Sea, Ministry of Agriculture and Rural Affairs, Dalian Ocean University, Dalian 116023, ChinaKey Laboratory of Mariculture & Stock Enhancement in North China’s Sea, Ministry of Agriculture and Rural Affairs, Dalian Ocean University, Dalian 116023, ChinaKey Laboratory of Mariculture & Stock Enhancement in North China’s Sea, Ministry of Agriculture and Rural Affairs, Dalian Ocean University, Dalian 116023, ChinaKey Laboratory of Mariculture & Stock Enhancement in North China’s Sea, Ministry of Agriculture and Rural Affairs, Dalian Ocean University, Dalian 116023, ChinaThe energetic link in the benthic community is based on physiological characteristics of the low food absorption efficiency of sea urchins. Low food absorption efficiency of sea urchins is correlated with the activity of digestive enzymes and the duration of food in their gut. Thus, the digestive enzymes activities (pepsin and amylase enzyme activities) and gut emptying are important indicators in assessing nutrient digestion and absorption in sea urchins. In the present study, the relationship between these indicators and molecules related to digestive physiology were quantified in sea urchins. We found (1) an inter-regulatory relationship existed between Transient receptor potential cation channel, subfamily A, member 1 (TRPA1), and serotonin (5-hydroxytryptamine; 5-HT) in the gut of <i>Strongylocentrotus intermedius</i>; (2) digestive enzyme activities were negatively correlated with the TRPA1 and concentration of 5-HT in the gut of <i>S. intermedius</i>; (3) gut emptying rate was positively correlated with TRPA1 and concentration of 5-HT in the gut of <i>S. intermedius</i>. The present study revealed that the digestion and absorption of food are correlated with the TRPA1 and 5-HT in the gut of <i>S. intermedius</i>, which provides valuable information about the digestive physiology of sea urchins. This novel finding is relevant to understanding the low food digestibility of sea urchins. It also provides valuable information to the digestive physiology of sea urchins, which are key to maintaining the stability of food webs in the marine ecosystem.https://www.mdpi.com/2079-7737/11/4/503sea urchinTRPA15-HTdigestive enzymegut emptying |
| spellingShingle | Jingyun Ding Huiyan Wang Zequn Li Jiangnan Sun Peng Ding Xiaomei Chi Mingfang Yang Yaqing Chang Chong Zhao Digestive Enzyme Activities and Gut Emptying Are Correlated with the Reciprocal Regulation of TRPA1 Ion Channel and Serotonin in the Gut of the Sea Urchin <i>Strongylocentrotus intermedius</i> Biology sea urchin TRPA1 5-HT digestive enzyme gut emptying |
| title | Digestive Enzyme Activities and Gut Emptying Are Correlated with the Reciprocal Regulation of TRPA1 Ion Channel and Serotonin in the Gut of the Sea Urchin <i>Strongylocentrotus intermedius</i> |
| title_full | Digestive Enzyme Activities and Gut Emptying Are Correlated with the Reciprocal Regulation of TRPA1 Ion Channel and Serotonin in the Gut of the Sea Urchin <i>Strongylocentrotus intermedius</i> |
| title_fullStr | Digestive Enzyme Activities and Gut Emptying Are Correlated with the Reciprocal Regulation of TRPA1 Ion Channel and Serotonin in the Gut of the Sea Urchin <i>Strongylocentrotus intermedius</i> |
| title_full_unstemmed | Digestive Enzyme Activities and Gut Emptying Are Correlated with the Reciprocal Regulation of TRPA1 Ion Channel and Serotonin in the Gut of the Sea Urchin <i>Strongylocentrotus intermedius</i> |
| title_short | Digestive Enzyme Activities and Gut Emptying Are Correlated with the Reciprocal Regulation of TRPA1 Ion Channel and Serotonin in the Gut of the Sea Urchin <i>Strongylocentrotus intermedius</i> |
| title_sort | digestive enzyme activities and gut emptying are correlated with the reciprocal regulation of trpa1 ion channel and serotonin in the gut of the sea urchin i strongylocentrotus intermedius i |
| topic | sea urchin TRPA1 5-HT digestive enzyme gut emptying |
| url | https://www.mdpi.com/2079-7737/11/4/503 |
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