Serum cortisol, glucose, thyroid hormones' and non-specific immune responses of Persian sturgeon, Acipenser persicus to exogenous tryptophan and acute stress

Hoseini, Seyyed Morteza; Mirghaed, Ali Taheri; Mazandarani, Mohammad; Zoheiri, Fazel

doi:10.1016/j.aquaculture.2016.04.031

Cited by 45 publications

(32 citation statements)

References 31 publications

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“…In the present study, plasma glucose content was decreased with increasing dietary tryptophan levels up to 3.95 g/kg and then increased. The trend was similar to previous studies in Persian sturgeon and rats (Hoseini, Mirghaed, Mazandarani, & Zoheiri, ; Moshirfar, Kamara, & Castonguay, ). Lardy and his group (Ray, Foster, & Lardy, ; Veneziale, Walter, Kneer, & Lardy, ) demonstrated that glucose synthesis in the isolated perfused liver is inhibited by tryptophan and speculated that hypoglycaemia in the whole animal may be caused by impaired gluconeogenesis.…”

Section: Discussionsupporting

confidence: 91%

Effects of dietary tryptophan levels on growth performance, whole body composition and gene expression levels related to glycometabolism for juvenile blunt snout bream,Megalobrama amblycephala

Liang

Chisomo-Kasiya

et al. 2018

Aquacult Nutr

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To investigate the effects of dietary tryptophan on growth and glycometabolism in juvenile blunt snout bream, 450 fish (initial weight 23.33 ± 0.03 g) were fed six practical diets with graded levels of tryptophan (from 0.79 g/kg to 5.96 g/kg dry matter) for 8 weeks. Results showed that final weight, per cent weight gain (PWG), protein efficiency rate, feed intake and feed conversion ratio (FCR) were significantly improved by 2.80 g/kg diet. The maximum values of protein and ash were observed in 2.80 g/kg diet, while moisture was minimum. Lipid content of fish fed 3.95 g/kg diet was significantly higher than other diets. The highest plasma insulin‐like growth factor‐1 (IGF‐1) content was observed in 0.79 g/kg diet. In the liver, IGF‐1 mRNA levels were significantly downregulated by 2.80 g/kg dietary tryptophan, while glucokinase levels were by 3.95 g/kg, while glucose‐6‐phosphatase and phosphoenolpyruvate carboxykinase mRNA levels showed a converse trend compared with IGF‐1. Based on PWG and FCR, the optimal dietary tryptophan level was determined to be 1.99 g/kg (6.20 g/kg of dietary protein) and 1.96 g/kg (6.11 g/kg of dietary protein), respectively, using broken‐line regression analysis.

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Section: Discussionsupporting

confidence: 91%

Effects of dietary tryptophan levels on growth performance, whole body composition and gene expression levels related to glycometabolism for juvenile blunt snout bream,Megalobrama amblycephala

Liang

Chisomo-Kasiya

et al. 2018

Aquacult Nutr

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“…Similarly, A. persicus fed a 0.5% increase in tryptophan (dry matter basis) did not change serum lysozyme and haemolytic activities after 5, 10 and 15 days of feeding (Hoseini et al . ). In contrast, several dietary tryptophan levels induced detrimental responses in the young C. idella after 8 weeks of feeding (Wen et al .…”

Section: Tryptophan and Immune Responsementioning

confidence: 97%

“…Interestingly, Hoseini et al . () reported increase in basal and post‐stress cortisol levels in Acipenser persicus after 15 days feeding with tryptophan‐supplemented diet (0.5% of diet). The same authors Hoseini and Hosseini (), however, reported a mitigation of the stress response (serum cortisol and glucose) to a 7 days osmotic challenge in C. carpio fed with similar tryptophan supplementation (0.5% of diet).…”

Section: Effects Of Tryptophan On 5ht Synthesis Behaviour and Stressmentioning

confidence: 99%

Physiological roles of tryptophan in teleosts: current knowledge and perspectives for future studies

Hoseini

Pérez‐Jiménez

Costas

et al. 2017

Reviews in Aquaculture

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Tryptophan is an essential amino acid with a huge functional versatility, in addition to its participation in protein synthesis. Because of the complexity of its metabolism, and the functional relevance of several of its metabolites, it directly or indirectly participates in a wide array of physiological pathways. This amino acid is a precursor for the synthesis of the neurotransmitter/neuromodulator serotonin (5HT), the hormone melatonin and kynurenine and related compounds such as kynurenic acid, quinolinic acid or niacin. Because of this, it has a key role in the regulation of processes ranging from the neuroendocrine to the immune system in vertebrates. In aquaculture, extensive research has been performed to optimize the levels of tryptophan in the commercial diets for many fish species. Providing adequate levels of this amino acid is critically important for fish growth but also for fish welfare, as tryptophan has been shown to modulate fish behaviour, stress responses, and antioxidant and immune systems. Currently, available data suggest a wide variation in tryptophan requirements of different species ranging 0.3–1.3% of dietary protein level, but recent evidence also shows that fish tryptophan requirements can greatly vary depending on the rearing conditions of the fish. We also review here the participation of tryptophan and related metabolites in different physiological functions that are crucial for fish welfare. The review covers the involvement of tryptophan in 5HT‐ and melatonin‐mediated functions, along with its participation in the regulation of the immune system and its role as an antioxidant and antitoxic agent in fish.

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“…It has been suggested that cortisol suppresses thyroid hormone levels in fish (Walpita, Grommen, Darras, & Van der Geyten, ). Such an inverse relationship between serum cortisol and thyroid hormone levels has been reported during fasting (Hoseini, Yousefi et al, ; Jia et al, ) or stress (Hoseini et al, ) in fish.…”

Section: Discussionmentioning

confidence: 62%

“…During stress, the physiological state of the fish is shifted towards increase in energy supply to counteract the stress; such changes are mediated by the action of endocrine system, most important cortisol action (Barton, ; Bonga, ). Beside its role during fasting, cortisol is an important primary stress response that triggers secondary stress responses such as metabolic responses, characterized by hyperglycaemia and decreased thyroid hormone levels (Hoseini, Taheri Mirghaed, Mazandarani, & Zoheiri, ; Hoseini, Tort, Abolhasani, & Rajabiesterabadi, ), and immunological responses, characterized by decreased leucocyte number and humoural immune components (Costas, Conceição et al, ; Hoseini et al, ; Tort, ; Yousefi, Paktinat, Mahmoudi, Pérez‐Jiménez, & Hoseini, ). Crowding stress is common in aquaculture causing increased energy demand and immunosuppression (Taheri Mirghaed, Hoseini, & Ghelichpour, ).…”

Section: Introductionmentioning

confidence: 99%

Effects of fasting on metabolic and immunological responses of common carp ( Cyprinus carpio ) to a further acute stress

Hoseini

Behrouz

2019

Aquac Res

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Common carp were fasted for 0, 3 and 14 days prior to exposure to a 2‐hr crowding stress. Serum cortisol, glucose, lactate, T4, T3, serum alternative complement (ACH50), lysozyme, total immunoglobulin (Ig) and blood WBC were determined before and 0, 6 and 24 hr after the crowding stress. Three days of fasting led to a significant decrease in serum levels of lactate and thyroid hormones. Fourteen days of fasting led to initiation of physiological process to maintain serum glucose by increase in serum cortisol level and lactate utilization. These fish had lower levels of thyroid hormones suggesting suppression of basal metabolism. The fish also had lower WBC and serum lysozyme and total Ig levels indicating immunosuppression. After the crowding stress, the fish fasted for 3 days had significantly lower lactate, thyroid hormones and total Ig levels. The fish fasted for 14 days had higher cortisol but lower glucose and thyroid hormones levels suggesting impairment in metabolic responses to the crowding stress. Immunological and health indicators including WBC, and ACH50, lysozyme and total Ig of these fish were significantly lower than the other groups after the crowding stress. Overall, the results show that a 14‐day fasting leads to stress responses, reduction in metabolism and immunosuppression. Moreover, 14 days of fasting lead to greater cortisol response to a further crowding stress, which induces marked immunosuppression and fallen welfare.

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Serum cortisol, glucose, thyroid hormones' and non-specific immune responses of Persian sturgeon, Acipenser persicus to exogenous tryptophan and acute stress

Cited by 45 publications

References 31 publications

Effects of dietary tryptophan levels on growth performance, whole body composition and gene expression levels related to glycometabolism for juvenile blunt snout bream,Megalobrama amblycephala

Effects of dietary tryptophan levels on growth performance, whole body composition and gene expression levels related to glycometabolism for juvenile blunt snout bream,Megalobrama amblycephala

Physiological roles of tryptophan in teleosts: current knowledge and perspectives for future studies

Effects of fasting on metabolic and immunological responses of common carp ( Cyprinus carpio ) to a further acute stress

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