Effects of Mulberry Leaf Extract on the Liver Function of Juvenile Spotted Sea Bass (Lateolabrax maculatus)

In order to explore the effect of mulberry leaf extract (ELM) on the liver function of spotted sea bass, 360 fish with healthy constitution (average body weight 9.00 ± 0.02 g) were selected and randomly divided into six groups with three repetitions, and six groups of fish were randomly placed into...

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Main Authors: Sishun Zhou, Hao Lin, Lumin Kong, Jianrong Ma, Zhongying Long, Huihui Qin, Zhangfan Huang, Yi Lin, Longhui Liu, Zhongbao Li
Format: Article
Language:English
Published: Hindawi-Wiley 2023-01-01
Series:Aquaculture Nutrition
Online Access:http://dx.doi.org/10.1155/2023/2892463
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author Sishun Zhou
Hao Lin
Lumin Kong
Jianrong Ma
Zhongying Long
Huihui Qin
Zhangfan Huang
Yi Lin
Longhui Liu
Zhongbao Li
author_facet Sishun Zhou
Hao Lin
Lumin Kong
Jianrong Ma
Zhongying Long
Huihui Qin
Zhangfan Huang
Yi Lin
Longhui Liu
Zhongbao Li
author_sort Sishun Zhou
collection DOAJ
description In order to explore the effect of mulberry leaf extract (ELM) on the liver function of spotted sea bass, 360 fish with healthy constitution (average body weight 9.00 ± 0.02 g) were selected and randomly divided into six groups with three repetitions, and six groups of fish were randomly placed into 18 test tanks (200 L) with 20 fish per tank for the 52-day feeding test. Every day, the fish were fed the experimental feed with different concentrations (0, 3, 6, 9, 12, 15 g/kg) to the level of apparent satiation, with a crude protein content of 48.0% and a crude fat content of 8.6%. And the water temperature was maintained at 25–28°C with a salinity of 0.5%–1‰. After feeding, five fish were randomly selected to collect their livers and serum for detection of indicators. The results showed that, compared with the control group, ELM significantly increased the activities of lipase (LPS) and trypsin (TRS) in the liver, and reached the highest level when the amount of ELM added was 6 g/kg P<0.05. ELM significantly increased the activities of lactate dehydrogenase (LDH) and glutamic-oxaloacetic transaminase (GOT) involved in the metabolic process in liver tissue, and GOT activity reached the highest when ELM was added at 9 g/kg, and LDH activity reached the highest when ELM was added at 15 g/kg P<0.05. ELM had no significant effect on liver antioxidant enzymes P>0.05, but the content of malondialdehyde was significantly reduced P<0.05. Compared with the control group, ELM significantly increased the activities of AKP and ACP in the liver, and the AKP activity reached the highest when the ELM addition amount was 3 g/kg, and the ACP activity reached the highest when the ELM addition amount was 9 g/kg P<0.05. Through comparative transcriptomic analysis, it was indicated that ELM enhanced the hepatic lipids and carbohydrates metabolism ability, as manifested in the upregulation of expression of phosphatidate phosphatase, glucuronosyltransferase, inositol oxygenase, carbonic anhydrase, and cytochrome c oxidase subunit 2. ELM can also increase the expression of signal transducer and activator of transcription 1, ATP-dependent RNA helicase and C-X-C motif chemokine 9 involved in the immune process. The above results show that the ELM can enhance the digestion, metabolism, and immunity of the liver by increasing the activity of digestive enzymes, metabolic enzymes, and the expression of metabolism and immune regulation genes. This study provides a theoretical basis for the application of ELM in the cultivation of spotted sea bass by exploring the effect of ELM on the liver function of spotted sea bass.
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spelling doaj.art-cb2d298e52be4b9799858ee3524f07f92023-10-31T00:00:04ZengHindawi-WileyAquaculture Nutrition1365-20952023-01-01202310.1155/2023/2892463Effects of Mulberry Leaf Extract on the Liver Function of Juvenile Spotted Sea Bass (Lateolabrax maculatus)Sishun Zhou0Hao Lin1Lumin Kong2Jianrong Ma3Zhongying Long4Huihui Qin5Zhangfan Huang6Yi Lin7Longhui Liu8Zhongbao Li9Fisheries CollegeFisheries CollegeFisheries CollegeFisheries CollegeFisheries CollegeFisheries CollegeFisheries CollegeFisheries CollegeFisheries CollegeFisheries CollegeIn order to explore the effect of mulberry leaf extract (ELM) on the liver function of spotted sea bass, 360 fish with healthy constitution (average body weight 9.00 ± 0.02 g) were selected and randomly divided into six groups with three repetitions, and six groups of fish were randomly placed into 18 test tanks (200 L) with 20 fish per tank for the 52-day feeding test. Every day, the fish were fed the experimental feed with different concentrations (0, 3, 6, 9, 12, 15 g/kg) to the level of apparent satiation, with a crude protein content of 48.0% and a crude fat content of 8.6%. And the water temperature was maintained at 25–28°C with a salinity of 0.5%–1‰. After feeding, five fish were randomly selected to collect their livers and serum for detection of indicators. The results showed that, compared with the control group, ELM significantly increased the activities of lipase (LPS) and trypsin (TRS) in the liver, and reached the highest level when the amount of ELM added was 6 g/kg P<0.05. ELM significantly increased the activities of lactate dehydrogenase (LDH) and glutamic-oxaloacetic transaminase (GOT) involved in the metabolic process in liver tissue, and GOT activity reached the highest when ELM was added at 9 g/kg, and LDH activity reached the highest when ELM was added at 15 g/kg P<0.05. ELM had no significant effect on liver antioxidant enzymes P>0.05, but the content of malondialdehyde was significantly reduced P<0.05. Compared with the control group, ELM significantly increased the activities of AKP and ACP in the liver, and the AKP activity reached the highest when the ELM addition amount was 3 g/kg, and the ACP activity reached the highest when the ELM addition amount was 9 g/kg P<0.05. Through comparative transcriptomic analysis, it was indicated that ELM enhanced the hepatic lipids and carbohydrates metabolism ability, as manifested in the upregulation of expression of phosphatidate phosphatase, glucuronosyltransferase, inositol oxygenase, carbonic anhydrase, and cytochrome c oxidase subunit 2. ELM can also increase the expression of signal transducer and activator of transcription 1, ATP-dependent RNA helicase and C-X-C motif chemokine 9 involved in the immune process. The above results show that the ELM can enhance the digestion, metabolism, and immunity of the liver by increasing the activity of digestive enzymes, metabolic enzymes, and the expression of metabolism and immune regulation genes. This study provides a theoretical basis for the application of ELM in the cultivation of spotted sea bass by exploring the effect of ELM on the liver function of spotted sea bass.http://dx.doi.org/10.1155/2023/2892463
spellingShingle Sishun Zhou
Hao Lin
Lumin Kong
Jianrong Ma
Zhongying Long
Huihui Qin
Zhangfan Huang
Yi Lin
Longhui Liu
Zhongbao Li
Effects of Mulberry Leaf Extract on the Liver Function of Juvenile Spotted Sea Bass (Lateolabrax maculatus)
Aquaculture Nutrition
title Effects of Mulberry Leaf Extract on the Liver Function of Juvenile Spotted Sea Bass (Lateolabrax maculatus)
title_full Effects of Mulberry Leaf Extract on the Liver Function of Juvenile Spotted Sea Bass (Lateolabrax maculatus)
title_fullStr Effects of Mulberry Leaf Extract on the Liver Function of Juvenile Spotted Sea Bass (Lateolabrax maculatus)
title_full_unstemmed Effects of Mulberry Leaf Extract on the Liver Function of Juvenile Spotted Sea Bass (Lateolabrax maculatus)
title_short Effects of Mulberry Leaf Extract on the Liver Function of Juvenile Spotted Sea Bass (Lateolabrax maculatus)
title_sort effects of mulberry leaf extract on the liver function of juvenile spotted sea bass lateolabrax maculatus
url http://dx.doi.org/10.1155/2023/2892463
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