1
|
Garschall K, Pascual-Carreras E, García-Pascual B, Filimonova D, Guse A, Johnston IG, Steinmetz PRH. The cellular basis of feeding-dependent body size plasticity in sea anemones. Development 2024; 151:dev202926. [PMID: 38980277 DOI: 10.1242/dev.202926] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2024] [Accepted: 05/20/2024] [Indexed: 07/10/2024]
Abstract
Many animals share a lifelong capacity to adapt their growth rates and body sizes to changing environmental food supplies. However, the cellular and molecular basis underlying this plasticity remains only poorly understood. We therefore studied how the sea anemones Nematostella vectensis and Aiptasia (Exaiptasia pallida) respond to feeding and starvation. Combining quantifications of body size and cell numbers with mathematical modelling, we observed that growth and shrinkage rates in Nematostella are exponential, stereotypic and accompanied by dramatic changes in cell numbers. Notably, shrinkage rates, but not growth rates, are independent of body size. In the facultatively symbiotic Aiptasia, we show that growth and cell proliferation rates are dependent on the symbiotic state. On a cellular level, we found that >7% of all cells in Nematostella juveniles reversibly shift between S/G2/M and G1/G0 cell cycle phases when fed or starved, respectively. Furthermore, we demonstrate that polyp growth and cell proliferation are dependent on TOR signalling during feeding. Altogether, we provide a benchmark and resource for further investigating the nutritional regulation of body plasticity on multiple scales using the genetic toolkit available for Nematostella.
Collapse
Affiliation(s)
- Kathrin Garschall
- Michael Sars Centre, University of Bergen, Thormøhlensgt. 55, N-5008 Bergen, Norway
| | | | - Belén García-Pascual
- Department for Mathematics, University of Bergen, Allégaten 41, N-5007 Bergen, Norway
| | - Daria Filimonova
- Michael Sars Centre, University of Bergen, Thormøhlensgt. 55, N-5008 Bergen, Norway
- Centre for Organismal Studies, Heidelberg University, Im Neuenheimer Feld 230, D-69120 Heidelberg, Germany
| | - Annika Guse
- Centre for Organismal Studies, Heidelberg University, Im Neuenheimer Feld 230, D-69120 Heidelberg, Germany
| | - Iain G Johnston
- Department for Mathematics, University of Bergen, Allégaten 41, N-5007 Bergen, Norway
- Computational Biology Unit, Department of Informatics, University of Bergen, Thormøhlensgt. 55, N-5008 Bergen, Norway
| | | |
Collapse
|
2
|
Hardison EA, Eliason EJ. Diet effects on ectotherm thermal performance. Biol Rev Camb Philos Soc 2024; 99:1537-1555. [PMID: 38616524 DOI: 10.1111/brv.13081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Revised: 03/20/2024] [Accepted: 03/26/2024] [Indexed: 04/16/2024]
Abstract
The environment is changing rapidly, and considerable research is aimed at understanding the capacity of organisms to respond. Changes in environmental temperature are particularly concerning as most animals are ectothermic, with temperature considered a key factor governing their ecology, biogeography, behaviour and physiology. The ability of ectotherms to persist in an increasingly warm, variable, and unpredictable future will depend on their nutritional status. Nutritional resources (e.g. food availability, quality, options) vary across space and time and in response to environmental change, but animals also have the capacity to alter how much they eat and what they eat, which may help them improve their performance under climate change. In this review, we discuss the state of knowledge in the intersection between animal nutrition and temperature. We take a mechanistic approach to describe nutrients (i.e. broad macronutrients, specific lipids, and micronutrients) that may impact thermal performance and discuss what is currently known about their role in ectotherm thermal plasticity, thermoregulatory behaviour, diet preference, and thermal tolerance. We finish by describing how this topic can inform ectotherm biogeography, behaviour, and aquaculture research.
Collapse
Affiliation(s)
- Emily A Hardison
- Department of Ecology, Evolution and Marine Biology, University of California Santa Barbara, Santa Barbara, California, 93106, USA
| | - Erika J Eliason
- Department of Ecology, Evolution and Marine Biology, University of California Santa Barbara, Santa Barbara, California, 93106, USA
| |
Collapse
|
3
|
Yuan C, Zhou K, Pan X, Wang D, Zhang C, Lin Y, Chen Z, Qin J, Du X, Huang Y. Comparative physiological, biochemical and transcriptomic analyses to reveal potential regulatory mechanisms in response to starvation stress in Cipangopaludina chinensis. COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY. PART D, GENOMICS & PROTEOMICS 2024; 52:101279. [PMID: 38941864 DOI: 10.1016/j.cbd.2024.101279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2024] [Revised: 06/03/2024] [Accepted: 06/14/2024] [Indexed: 06/30/2024]
Abstract
Cipangopaludina chinensis, as a financially significant species in China, represents a gastropod in nature which frequently encounters starvation stress owing to its limited prey options. However, the underlying response mechanisms to combat starvation have not been investigated in depth. We collected C. chinensis under several times of starvation stress (0, 7, 30, and 60 days) for nutrient, biochemical characteristics and transcriptome analyses. The results showed that prolonged starvation stress (> 30 days) caused obvious fluctuations in the nutrient composition of snails, with dramatic reductions in body weight, survival and digestive enzyme activity (amylase, protease, and lipase), and markedly enhanced the antioxidant enzyme activities of the snails. Comparative transcriptome analyses revealed 3538 differentially expressed genes (DEGs), which were significantly associated with specific starvation stress-responsive pathways, including oxidative phosphorylation and alanine, aspartate, and glutamate metabolism. Then, we identified 40 candidate genes (e.g., HACD2, Cp1, CYP1A2, and GPX1) response to starvation stress through STEM and WGCNA analyses. RT-qPCR verified the accuracy and reliability of the high-throughput sequencing results. This study provides insights into snail overwintering survival and the potential regulatory mechanisms of snail adaptation to starvation stress.
Collapse
Affiliation(s)
- Chang Yuan
- Guangxi Academy of Fishery Sciences, Key Laboratory of Aquatic Genetic Breeding and Healthy Farming in Guangxi, Nanning, Guangxi 530021, China
| | - Kangqi Zhou
- Guangxi Academy of Fishery Sciences, Key Laboratory of Aquatic Genetic Breeding and Healthy Farming in Guangxi, Nanning, Guangxi 530021, China
| | - Xianhui Pan
- Guangxi Academy of Fishery Sciences, Key Laboratory of Aquatic Genetic Breeding and Healthy Farming in Guangxi, Nanning, Guangxi 530021, China.
| | - Dapeng Wang
- Guangxi Academy of Fishery Sciences, Key Laboratory of Aquatic Genetic Breeding and Healthy Farming in Guangxi, Nanning, Guangxi 530021, China.
| | - Caiqun Zhang
- Guangxi Academy of Fishery Sciences, Key Laboratory of Aquatic Genetic Breeding and Healthy Farming in Guangxi, Nanning, Guangxi 530021, China
| | - Yong Lin
- Guangxi Academy of Fishery Sciences, Key Laboratory of Aquatic Genetic Breeding and Healthy Farming in Guangxi, Nanning, Guangxi 530021, China
| | - Zhong Chen
- Guangxi Academy of Fishery Sciences, Key Laboratory of Aquatic Genetic Breeding and Healthy Farming in Guangxi, Nanning, Guangxi 530021, China
| | - Junqi Qin
- Guangxi Academy of Fishery Sciences, Key Laboratory of Aquatic Genetic Breeding and Healthy Farming in Guangxi, Nanning, Guangxi 530021, China
| | - Xuesong Du
- Guangxi Academy of Fishery Sciences, Key Laboratory of Aquatic Genetic Breeding and Healthy Farming in Guangxi, Nanning, Guangxi 530021, China
| | - Yin Huang
- Guangxi Academy of Fishery Sciences, Key Laboratory of Aquatic Genetic Breeding and Healthy Farming in Guangxi, Nanning, Guangxi 530021, China
| |
Collapse
|
4
|
Gutierrez E, Mitchell S, Hambly C, Sayle KL, von Kriegsheim A, Speakman JR, Britton K. Carbon, nitrogen, and sulfur elemental and isotopic variations in mouse hair and bone collagen during short-term graded calorie restriction. iScience 2024; 27:110059. [PMID: 38947513 PMCID: PMC11214416 DOI: 10.1016/j.isci.2024.110059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 03/19/2024] [Accepted: 05/17/2024] [Indexed: 07/02/2024] Open
Abstract
This study characterized the effect of calorie restriction (CR) on elemental content and stable isotope ratio measurements of bone "collagen" and hair keratin. Adult mice on graded CR (10-40%; 84 days) showed decreased hair δ 15N, δ 13C, and δ 34S values (significantly for δ 15N) with increasing CR, alongside a significant increase in bone "collagen" δ 15N values and a decrease in "collagen" δ 13C values. We propose this was likely due to the intensified mobilization of endogenous proteins, as well as lipids in newly synthesized "collagen". Elemental analysis of bone "collagen" revealed decreased carbon, nitrogen, and sulfur % content with increasing CR which is attributed to a change in the in vivo bone "collagen" structure with extent of CR. This complexity challenges the use of elemental indicators in the assessment of collagen quality in archaeological studies where nutritional stress may be a factor.
Collapse
Affiliation(s)
- Eléa Gutierrez
- Department of Archaeology, University of Aberdeen, Aberdeen, Scotland AB39 2PN, UK
- School of Biological Sciences, University of Aberdeen, Aberdeen, Scotland AB24 2TZ, UK
- AASPE “Archéozoologie, Archéobotanique: Sociétés, Pratiques, Environnements”, Muséum national d’Histoire naturelle, 75005 Paris, France
| | - Sharon Mitchell
- School of Biological Sciences, University of Aberdeen, Aberdeen, Scotland AB24 2TZ, UK
| | - Catherine Hambly
- School of Biological Sciences, University of Aberdeen, Aberdeen, Scotland AB24 2TZ, UK
| | - Kerry L. Sayle
- Scottish Universities Environmental Research Centre, University of Glasgow, Scotland G75 0QF, UK
| | - Alex von Kriegsheim
- Edinburgh Cancer Research UK Centre, MRC Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh Scotland EH4 2XR, UK
| | - John R. Speakman
- School of Biological Sciences, University of Aberdeen, Aberdeen, Scotland AB24 2TZ, UK
- Shenzhen Key Laboratory of Metabolic Health, Centre for Energy Metabolism and Reproduction, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, PRC
- Centre of Excellence in Animal Evolution and Genetics, Kunming, PRC
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, PRC
| | - Kate Britton
- Department of Archaeology, University of Aberdeen, Aberdeen, Scotland AB39 2PN, UK
| |
Collapse
|
5
|
Liu J, Jin P, Li M, Yi X, Tian Y, Zhang Z, Liu J, Shi L. The energy metabolism of the freshwater leech Whitmania pigra in response to fasting. Comp Biochem Physiol B Biochem Mol Biol 2024; 274:110999. [PMID: 38852903 DOI: 10.1016/j.cbpb.2024.110999] [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: 11/21/2023] [Revised: 05/30/2024] [Accepted: 05/31/2024] [Indexed: 06/11/2024]
Abstract
Non-blood-feeding leeches, Whitmania pigra, have evolved unique digestive structures and physiological mechanisms to cope with fasting. However, the metabolic changes and molecular mechanisms induced by fasting remain unclear. Therefore, this study recorded the weights of leeches during the fasting process. The weight changes were divided into two stages: a rapid decline period (1-9 weeks) and a fluctuating decline period (9-24 weeks). Leeches fasted for 4 (H4), 11 (H11), and 24 (H24) weeks were selected for transcriptome sequencing. Compared to the control group (H0), 436, 1157, and 337 differentially expressed genes (DEGs) were identified, which were mainly related to glycolysis/gluconeogenesis, amino acid metabolism, and the lipid metabolism pathway. The 6-phosphofructokinase (Pfk), pyruvate kinase (PK), and phosphoenolpyruvate carboxykinase (Pck) transcription levels revealed glycolysis/gluconeogenesis activation during the early stage of fasting and peaked at 11 weeks. Decreased expression of the rate-limiting enzyme acetyl-CoA carboxylase (ACC) in fatty acid synthesis during fasting may impede fatty acid synthesis. These results indicated that the nutrient storage and energy-supplying pathways in W. pigra were modified to improve fasting resistance. The findings of this study provided guidance for exploring the mechanism underlying fasting metabolism and laid a foundation for artificial breeding to improve the resistance of leeches.
Collapse
Affiliation(s)
- Jiali Liu
- Key Lab of Chinese Medicine Resources Conservation, State Administration of Traditional Chinese Medicine of the People's Republic of China, Engineering Research Center of Chinese Medicine Resource, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, China
| | - Panpan Jin
- Key Lab of Chinese Medicine Resources Conservation, State Administration of Traditional Chinese Medicine of the People's Republic of China, Engineering Research Center of Chinese Medicine Resource, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, China
| | - Mingyue Li
- Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
| | - Xiaozhe Yi
- Key Lab of Chinese Medicine Resources Conservation, State Administration of Traditional Chinese Medicine of the People's Republic of China, Engineering Research Center of Chinese Medicine Resource, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, China
| | - Yu Tian
- Hebei Key Laboratory of Study and Exploitation of Chinese Medicine, Chengde Medical University, Chengde, 067000, China
| | - Zhaolei Zhang
- Hebei Key Laboratory of Study and Exploitation of Chinese Medicine, Chengde Medical University, Chengde, 067000, China
| | - Jinxin Liu
- Key Lab of Chinese Medicine Resources Conservation, State Administration of Traditional Chinese Medicine of the People's Republic of China, Engineering Research Center of Chinese Medicine Resource, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, China.
| | - Linchun Shi
- Key Lab of Chinese Medicine Resources Conservation, State Administration of Traditional Chinese Medicine of the People's Republic of China, Engineering Research Center of Chinese Medicine Resource, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, China.
| |
Collapse
|
6
|
Xu JH, Xu XY, Huang XY, Chen KX, Wen H, Li M, Liu JS. Long-term fasting induced basal thermogenesis flexibility in female Japanese quails. Comp Biochem Physiol A Mol Integr Physiol 2024; 292:111611. [PMID: 38432457 DOI: 10.1016/j.cbpa.2024.111611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2023] [Revised: 02/28/2024] [Accepted: 02/28/2024] [Indexed: 03/05/2024]
Abstract
Male Japanese quails (Coturnix japonica) have been found to exhibit a three-phase metabolic change when subjected to prolonged fasting, during which basal thermogenesis is significantly reduced. A study had shown that there is a significant difference in the body temperature between male and female Japanese quails. However, whether female Japanese quails also show the same characteristic three-phase metabolic change during prolonged fasting and the underlying thermogenesis mechanisms associated with such changes are still unclear. In this study, female Japanese quails were subjected to prolonged starvation, and the body mass, basal metabolic rate (BMR), body temperature, mass of tissues and organs, body fat content, the state-4 respiration (S4R) and cytochrome c oxidase (CCO) activity in the muscle and liver of these birds were measured to determine the status of metabolic changes triggered by the starvation. In addition, the levels of glucose, triglyceride (TG) and uric acid, and thyroid hormones (T3 and T4) in the serum and the mRNA levels of myostatin (MSTN) and avian uncoupling protein (av-UCP) in the muscle were also measured. The results revealed the existence of a three-phase stage similar to that found in male Japanese quails undergoing prolonged starvation. Fasting resulted in significantly lower body mass, BMR, body temperature, tissues masses and most organs masses, as well as S4R and CCO activity in the muscle and liver. The mRNA level of av-UCP decreased during fasting, while that of MSTN increased but only during Phase I and II and decreased significantly during Phase III. Fasting also significantly lowered the T3 level and the ratio of T3/T4 in the serum. These results indicated that female Japanese quails showed an adaptive response in basal thermogenesis at multiple hierarchical levels, from organismal to biochemical, enzyme and cellular level, gene and endocrine levels and this integrated adjustment could be a part of the adaptation used by female quails to survive long-term fasting.
Collapse
Affiliation(s)
- Jie-Heng Xu
- School of Life and Environmental Sciences, Wenzhou University Chashan University Town, Wenzhou 325035, China; Zhejiang Provincial Key Laboratory for Water Environment and Marine Biological Resources Protection, Wenzhou University, Wenzhou, China
| | - Xin-Yu Xu
- School of Life and Environmental Sciences, Wenzhou University Chashan University Town, Wenzhou 325035, China; Zhejiang Provincial Key Laboratory for Water Environment and Marine Biological Resources Protection, Wenzhou University, Wenzhou, China
| | - Xing-Yu Huang
- School of Life and Environmental Sciences, Wenzhou University Chashan University Town, Wenzhou 325035, China; Zhejiang Provincial Key Laboratory for Water Environment and Marine Biological Resources Protection, Wenzhou University, Wenzhou, China
| | - Ke-Xin Chen
- School of Life and Environmental Sciences, Wenzhou University Chashan University Town, Wenzhou 325035, China; Zhejiang Provincial Key Laboratory for Water Environment and Marine Biological Resources Protection, Wenzhou University, Wenzhou, China
| | - He Wen
- School of Life and Environmental Sciences, Wenzhou University Chashan University Town, Wenzhou 325035, China; Zhejiang Provincial Key Laboratory for Water Environment and Marine Biological Resources Protection, Wenzhou University, Wenzhou, China
| | - Ming Li
- School of Life and Environmental Sciences, Wenzhou University Chashan University Town, Wenzhou 325035, China; Zhejiang Provincial Key Laboratory for Water Environment and Marine Biological Resources Protection, Wenzhou University, Wenzhou, China.
| | - Jin-Song Liu
- School of Life and Environmental Sciences, Wenzhou University Chashan University Town, Wenzhou 325035, China; Zhejiang Provincial Key Laboratory for Water Environment and Marine Biological Resources Protection, Wenzhou University, Wenzhou, China.
| |
Collapse
|
7
|
Jenni-Eiermann S, Liechti F, Briedis M, Rime Y, Jenni L. Energy supply during nocturnal endurance flight of migrant birds: effect of energy stores and flight behaviour. MOVEMENT ECOLOGY 2024; 12:41. [PMID: 38816784 PMCID: PMC11140942 DOI: 10.1186/s40462-024-00479-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2023] [Accepted: 05/14/2024] [Indexed: 06/01/2024]
Abstract
BACKGROUND Migrating birds fly non-stop for hours or even for days. They rely mainly on fat as fuel complemented by a certain amount of protein. Studies on homing pigeons and birds flying in a wind-tunnel suggest that the shares of fat and protein on total energy expenditure vary with flight duration and body fat stores. Also, flight behaviour, such as descending flight, is expected to affect metabolism. However, studies on free flying migrant birds under natural conditions are lacking. METHODS On a Swiss Alpine pass, we caught three species of nocturnal migrant passerines out of their natural migratory flight. Since most night migrants start soon after dusk, we used time since dusk as a measure of flight duration. We used plasma concentrations of metabolites of the fat, protein, and carbohydrate metabolism as indicators of relative fuel use. We used flight altitudes of birds tracked with radar and with atmospheric pressure loggers to characterize flight behaviour. RESULTS The indicators of fat catabolism (triglycerides, very low-density lipoproteins, glycerol) were positively correlated with body energy stores, supporting earlier findings that birds with high fat stores have a higher fat catabolism. As expected, plasma levels of triglycerides, very low-density lipoproteins, glycerol and ß-hydroxy-butyrate increased at the beginning of the night, indicating that nocturnal migrants increased their fat metabolism directly after take-off. Surprisingly, fat catabolism as well as glucose levels decreased in the second half of the night. Data from radar observations showed that the number of birds aloft, their mean height above ground and vertical flight speed decreased after midnight. Together with the findings from atmospheric pressure-loggers put on three species, this shows that nocturnal migrants migrating over continental Europe descend slowly during about 1.5 h before final landfall at night, which results in 11-30% energy savings according to current flight models. CONCLUSIONS We suggest that this slow descent reduces energy demands to an extent which is noticeable in the plasma concentration of lipid, protein, and carbohydrate metabolites. The slow descent may facilitate the search for a suitable resting habitat and serve to refill glycogen stores needed for foraging and predator escape when landed.
Collapse
Affiliation(s)
| | - Felix Liechti
- Swiss Ornithological Institute, Seerose 1, Sempach, CH-6204, Switzerland
| | - Martins Briedis
- Swiss Ornithological Institute, Seerose 1, Sempach, CH-6204, Switzerland
| | - Yann Rime
- Swiss Ornithological Institute, Seerose 1, Sempach, CH-6204, Switzerland
| | - Lukas Jenni
- Swiss Ornithological Institute, Seerose 1, Sempach, CH-6204, Switzerland
| |
Collapse
|
8
|
Reed KK, Silverman AE, Abbaspour A, Burger KS, Bulik CM, Carroll IM. Energy expenditure during nutritional rehabilitation: a scoping review to investigate hypermetabolism in individuals with anorexia nervosa. J Eat Disord 2024; 12:63. [PMID: 38773635 PMCID: PMC11110272 DOI: 10.1186/s40337-024-01019-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Accepted: 05/12/2024] [Indexed: 05/24/2024] Open
Abstract
BACKGROUND Weight gain and nutritional rehabilitation are essential first steps to achieve medical stabilization in anorexia nervosa, and frequent resistance to weight gain requires patients to consume high kilocalorie loads. Adaptive hypometabolism is common when patients begin treatment, and rebound hypermetabolism is suspected to be a significant barrier to weight gain. The aim of this review was to summarize existing data describing metabolic changes in anorexia nervosa during weight restoration. The reported findings challenge current hypotheses of weight gain resistance and highlight key areas for future research. METHODS Using scoping review guidelines, three databases were searched for studies investigating metabolic changes in anorexia nervosa before and after renourishment. Two reviewers systematically screened the titles and abstracts of 447 articles, and full-text versions of 106 studies were assessed for eligibility. A total of 36 studies were included for review. Data regarding the study description, sample population (including age, weight, BMI, duration of treatment, and caloric intake), and metabolic variable descriptions were extracted. RESULTS Female patients with anorexia nervosa from studies across 13 countries were included. Across the studies, average BMI increased from 13.7 kg/m2 at admission to 17.57 kg/m2. Patients presented to treatment with clinically reduced energy expenditure levels. After varying levels of nutritional rehabilitation and weight restoration, measured energy expenditure increased significantly in 76% of the studies. Energy expenditure values at the second timepoint increased to the standard range for normal weight female teenagers and adults. Despite these increases, the studies do not indicate the presence of a hypermetabolic state during renourishment. Additionally, all studies including both measured and predicted energy expenditure reported that predicted energy expenditure overestimated measured values. CONCLUSION This study provides a detailed evaluation of the literature investigating energy expenditure and metabolic rate in patients with anorexia nervosa before and following a period of renourishment. The findings from this review identify important gaps in the current beliefs of energy expenditure in anorexia nervosa and highlight a need for further exploration of metabolic alterations during weight restoration.
Collapse
Affiliation(s)
- Kylie K Reed
- Department of Nutrition, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Ava E Silverman
- Department of Psychiatry, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Smith College, Northampton, MA, USA
| | - Afrouz Abbaspour
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
| | - Kyle S Burger
- Department of Nutrition, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Cynthia M Bulik
- Department of Nutrition, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
- Department of Psychiatry, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden.
| | - Ian M Carroll
- Department of Nutrition, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| |
Collapse
|
9
|
Zillig KW, Hannan KD, Baird SE, Cocherell DE, Poletto JB, Fangue NA. Effects of acclimation temperature and feed restriction on the metabolic performance of green sturgeon. CONSERVATION PHYSIOLOGY 2024; 12:coae021. [PMID: 38784525 PMCID: PMC11113080 DOI: 10.1093/conphys/coae021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Revised: 03/05/2024] [Accepted: 03/31/2024] [Indexed: 05/25/2024]
Abstract
Green sturgeon (Acipenser medirostris) are an anadromous threatened species of sturgeon found along the Pacific coast of North America. The southern distinct population segment only spawns in the Sacramento River and is exposed to water temperatures kept artificially cold for the conservation and management of winter-run Chinook salmon (Oncorhynchus tshawytscha). Past research has demonstrated costs of cold-water rearing including reduced growth rates, condition and survivorship of juvenile green sturgeon. Our research investigates how the stressors of water temperature and food limitation influence the metabolic performance of green sturgeon. We reared green sturgeon at two acclimation temperatures (13 and 19°C) and two ration amounts (100% and 40% of optimal feed). We then measured the routine and maximum metabolic rates (RMR and MMR, respectively) of sturgeon acclimated to these rearing conditions across a range of acute temperature exposures (11 to 31°C). Among both temperature acclimation treatments (13 or 19°C), we found that feed restriction reduced RMR across a range of acute temperatures. The influence of feed restriction on RMR and MMR interacted with acclimation temperature. Fish reared at 13°C preserved their MMR and aerobic scope (AS) despite feed restriction, while fish fed reduced rations and acclimated to 19°C showed reduced MMR and AS capacity primarily at temperatures below 16°C. The sympatry of threatened green sturgeon with endangered salmonids produces a conservation conflict, such that cold-water releases for the conservation of at-risk salmonids may constrain the metabolic performance of juvenile green sturgeon. Understanding the impacts of environmental conditions (e.g. temperature, dissolved oxygen) on ecological interactions of green sturgeon will be necessary to determine the influence of salmonid-focused management.
Collapse
Affiliation(s)
- Kenneth W Zillig
- Department of Wildlife, Fish, and Conservation Biology, University of California Davis, One Shields Avenue, Davis, CA 95616-5270, USA
| | - Kelly D Hannan
- Department of Wildlife, Fish, and Conservation Biology, University of California Davis, One Shields Avenue, Davis, CA 95616-5270, USA
| | - Sarah E Baird
- Department of Wildlife, Fish, and Conservation Biology, University of California Davis, One Shields Avenue, Davis, CA 95616-5270, USA
| | - Dennis E Cocherell
- Department of Wildlife, Fish, and Conservation Biology, University of California Davis, One Shields Avenue, Davis, CA 95616-5270, USA
| | - Jamilynn B Poletto
- Department of Wildlife, Fish, and Conservation Biology, University of California Davis, One Shields Avenue, Davis, CA 95616-5270, USA
| | - Nann A Fangue
- Department of Wildlife, Fish, and Conservation Biology, University of California Davis, One Shields Avenue, Davis, CA 95616-5270, USA
| |
Collapse
|
10
|
Pozo-Morales M, Cobham AE, Centola C, McKinney MC, Liu P, Perazzolo C, Lefort A, Libert F, Bai H, Rohner N, Singh SP. Starvation-resistant cavefish reveal conserved mechanisms of starvation-induced hepatic lipotoxicity. Life Sci Alliance 2024; 7:e202302458. [PMID: 38467419 PMCID: PMC10927358 DOI: 10.26508/lsa.202302458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 02/14/2024] [Accepted: 02/19/2024] [Indexed: 03/13/2024] Open
Abstract
Starvation causes the accumulation of lipid droplets in the liver, a somewhat counterintuitive phenomenon that is nevertheless conserved from flies to humans. Much like fatty liver resulting from overfeeding, hepatic lipid accumulation (steatosis) during undernourishment can lead to lipotoxicity and atrophy of the liver. Here, we found that although surface populations of Astyanax mexicanus undergo this evolutionarily conserved response to starvation, the starvation-resistant cavefish larvae of the same species do not display an accumulation of lipid droplets upon starvation. Moreover, cavefish are resistant to liver atrophy during starvation, providing a unique system to explore strategies for liver protection. Using comparative transcriptomics between zebrafish, surface fish, and cavefish, we identified the fatty acid transporter slc27a2a/fatp2 to be correlated with the development of fatty liver. Pharmacological inhibition of slc27a2a in zebrafish rescues steatosis and atrophy of the liver upon starvation. Furthermore, down-regulation of FATP2 in Drosophila larvae inhibits the development of starvation-induced steatosis, suggesting the evolutionarily conserved importance of the gene in regulating fatty liver upon nutrition deprivation. Overall, our study identifies a conserved, druggable target to protect the liver from atrophy during starvation.
Collapse
Affiliation(s)
- Macarena Pozo-Morales
- https://ror.org/01r9htc13 IRIBHM, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Ansa E Cobham
- Stowers Institute for Medical Research, Kansas City, MO, USA
| | - Cielo Centola
- Stowers Institute for Medical Research, Kansas City, MO, USA
| | | | - Peiduo Liu
- Department of Genetics, Development, and Cell Biology, Iowa State University, Ames, IA, USA
| | - Camille Perazzolo
- https://ror.org/01r9htc13 IRIBHM, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Anne Lefort
- https://ror.org/01r9htc13 IRIBHM, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Frédérick Libert
- https://ror.org/01r9htc13 IRIBHM, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Hua Bai
- Department of Genetics, Development, and Cell Biology, Iowa State University, Ames, IA, USA
| | - Nicolas Rohner
- Stowers Institute for Medical Research, Kansas City, MO, USA
- Department of Cell Biology & Physiology, University of Kansas Medical Center, Kansas City, KS, USA
| | - Sumeet Pal Singh
- https://ror.org/01r9htc13 IRIBHM, Université Libre de Bruxelles (ULB), Brussels, Belgium
| |
Collapse
|
11
|
Melo N, de Souza SP, Konig I, de Jesus Paula DA, Ferreira IS, Luz RK, Murgas LDS. Sensitivity of different organs and tissues as biomarkers of oxidative stress in juvenile tambaqui (Colossoma macropomum) submitted to fasting. Comp Biochem Physiol A Mol Integr Physiol 2024; 291:111595. [PMID: 38316170 DOI: 10.1016/j.cbpa.2024.111595] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2023] [Revised: 01/16/2024] [Accepted: 02/02/2024] [Indexed: 02/07/2024]
Abstract
The present study was conducted to evaluate the effects of fasting on responses of oxidative biomarkers and antioxidant defenses using different organs and tissues of Colossoma macropomum. The fish were divided into two groups: fed (control) and fasting (7 days). After 7 days, the fish were sampled for assessment of oxidative stress biomarkers (MDA-lipid peroxidation and PCO-protein carbonyl) and antioxidant defenses (SOD-superoxide dismutase; CAT-catalase; GPX-glutathione peroxidase; and GST-glutathione-S -transferase) in the liver, intestine, gills, muscle, brain, and plasma. The results showed an increase in MDA, PCO, SOD, and GPX concentrations in the liver and intestine of fasting fish. In contrast, in the branchial tissue, there was a reduction in the activity of SOD and CAT enzymes in fasting fish. There was also a reduction in CAT activity in the muscle of fasting fish, while in the brain, there were no changes in oxidative stress biomarkers. Plasma showed a relatively low antioxidant response. In conclusion, our results confirm that a 7-day fasting period induced tissue-specific antioxidant responses, but the increase in antioxidant responses was only for the SOD and GPX enzymes of the liver and intestine. Additionally, the liver and intestine were the most responsive tissues, whereas the plasma was the least sensitive to oxidative stress.
Collapse
Affiliation(s)
- Naiara Melo
- Department of Animal Science, Federal University of Lavras, UFLA, Lavras, Minas Gerais, Brazil
| | | | - Isaac Konig
- Faculty of Animal Science and Veterinary Medicine, Federal University of Lavras, UFLA, Lavras, Minas Gerais, CEP 37200-900, Brazil; Department of Chemistry, Federal University of Lavras, UFLA, Lavras, Minas Gerais, Brazil
| | | | - Isabela Simas Ferreira
- Department of Animal Science, Federal University of Lavras, UFLA, Lavras, Minas Gerais, Brazil
| | - Ronald Kennedy Luz
- Universidade Federal de Minas Gerais, Departamento de Zootecnia, Laboratório de, Aquacultura, Avenida Antônio Carlos, 6627, zip code 30161-970, Belo Horizonte, Minas Gerais, Brazil
| | - Luis David Solis Murgas
- Department of Animal Science, Federal University of Lavras, UFLA, Lavras, Minas Gerais, Brazil; Faculty of Animal Science and Veterinary Medicine, Federal University of Lavras, UFLA, Lavras, Minas Gerais, CEP 37200-900, Brazil.
| |
Collapse
|
12
|
Cobham AE, Rohner N. Unraveling stress resilience: Insights from adaptations to extreme environments by Astyanax mexicanus cavefish. JOURNAL OF EXPERIMENTAL ZOOLOGY. PART B, MOLECULAR AND DEVELOPMENTAL EVOLUTION 2024; 342:178-188. [PMID: 38247307 DOI: 10.1002/jez.b.23238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 12/26/2023] [Accepted: 01/02/2024] [Indexed: 01/23/2024]
Abstract
Extreme environmental conditions have profound impacts on shaping the evolutionary trajectory of organisms. Exposure to these conditions elicits stress responses, that can trigger phenotypic changes in novel directions. The Mexican Tetra, Astyanax mexicanus, is an excellent model for understanding evolutionary mechanisms in response to extreme or new environments. This fish species consists of two morphs; the classical surface-dwelling fish and the blind cave-dwellers that inhabit dark and biodiversity-reduced ecosystems. In this review, we explore the specific stressors present in cave environments and examine the diverse adaptive strategies employed by cave populations to not only survive but thrive as successful colonizers. By analyzing the evolutionary responses of A. mexicanus, we gain valuable insights into the genetic, physiological, and behavioral adaptations that enable organisms to flourish under challenging environmental conditions.
Collapse
Affiliation(s)
- Ansa E Cobham
- Stowers Institute for Medical Research, Missouri, Kansas City, USA
| | - Nicolas Rohner
- Stowers Institute for Medical Research, Missouri, Kansas City, USA
- Department of Cell Biology & Physiology, University of Kansas Medical Center, Kansas City, Missouri, USA
| |
Collapse
|
13
|
Du Q, Shao R, Wang W, Zhang H, Liao X, Wang Z, Yin Z, Ai Q, Mai K, Tang X, Wan M. Vitamin D3 Regulates Energy Homeostasis under Short-Term Fasting Condition in Zebrafish (Danio Rerio). Nutrients 2024; 16:1271. [PMID: 38732518 PMCID: PMC11085765 DOI: 10.3390/nu16091271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2024] [Revised: 04/05/2024] [Accepted: 04/19/2024] [Indexed: 05/13/2024] Open
Abstract
Vitamin D3 (VD3) is a steroid hormone that plays pivotal roles in pathophysiology, and 1,25(OH)2D3 is the most active form of VD3. In the current study, the crucial role of VD3 in maintaining energy homeostasis under short-term fasting conditions was investigated. Our results confirmed that glucose-depriving pathways were inhibited while glucose-producing pathways were strengthened in zebrafish after fasting for 24 or 48 h. Moreover, VD3 anabolism in zebrafish was significantly suppressed in a time-dependent manner under short-fasting conditions. After fasting for 24 or 48 h, zebrafish fed with VD3 displayed a higher gluconeogenesis level and lower glycolysis level in the liver, and the serum glucose was maintained at higher levels, compared to those fed without VD3. Additionally, VD3 augmented the expression of fatty acids (FAs) transporter cd36 and lipogenesis in the liver, while enhancing lipolysis in the dorsal muscle. Similar results were obtained in cyp2r1-/- zebrafish, in which VD3 metabolism is obstructed. Importantly, it was observed that VD3 induced the production of gut GLP-1, which is considered to possess a potent gluconeogenic function in zebrafish. Meanwhile, the gene expression of proprotein convertase subtilisin/kexin type 1 (pcsk1), a GLP-1 processing enzyme, was also induced in the intestine of short-term fasted zebrafish. Notably, gut microbiota and its metabolite acetate were involved in VD3-regulated pcsk1 expression and GLP-1 production under short-term fasting conditions. In summary, our study demonstrated that VD3 regulated GLP-1 production in zebrafish by influencing gut microbiota and its metabolite, contributing to energy homeostasis and ameliorating hypoglycemia under short-term fasting conditions.
Collapse
Affiliation(s)
- Qingyang Du
- Key Laboratory of Aquaculture Nutrition and Feed, Ministry of Agriculture & Key Laboratory of Mariculture, Ministry of Education, College of Fisheries, Ocean University of China, Qingdao 266003, China
| | - Rui Shao
- Key Laboratory of Aquaculture Nutrition and Feed, Ministry of Agriculture & Key Laboratory of Mariculture, Ministry of Education, College of Fisheries, Ocean University of China, Qingdao 266003, China
| | - Wentao Wang
- Key Laboratory of Aquaculture Nutrition and Feed, Ministry of Agriculture & Key Laboratory of Mariculture, Ministry of Education, College of Fisheries, Ocean University of China, Qingdao 266003, China
| | - Hui Zhang
- Key Laboratory of Aquaculture Nutrition and Feed, Ministry of Agriculture & Key Laboratory of Mariculture, Ministry of Education, College of Fisheries, Ocean University of China, Qingdao 266003, China
| | - Xinmeng Liao
- Key Laboratory of Aquaculture Nutrition and Feed, Ministry of Agriculture & Key Laboratory of Mariculture, Ministry of Education, College of Fisheries, Ocean University of China, Qingdao 266003, China
| | - Zhihao Wang
- Key Laboratory of Aquaculture Nutrition and Feed, Ministry of Agriculture & Key Laboratory of Mariculture, Ministry of Education, College of Fisheries, Ocean University of China, Qingdao 266003, China
| | - Zhan Yin
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
| | - Qinghui Ai
- Key Laboratory of Aquaculture Nutrition and Feed, Ministry of Agriculture & Key Laboratory of Mariculture, Ministry of Education, College of Fisheries, Ocean University of China, Qingdao 266003, China
| | - Kangsen Mai
- Key Laboratory of Aquaculture Nutrition and Feed, Ministry of Agriculture & Key Laboratory of Mariculture, Ministry of Education, College of Fisheries, Ocean University of China, Qingdao 266003, China
| | - Xiao Tang
- Division of Physiological Chemistry II, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, 17177 Stockholm, Sweden
| | - Min Wan
- Key Laboratory of Aquaculture Nutrition and Feed, Ministry of Agriculture & Key Laboratory of Mariculture, Ministry of Education, College of Fisheries, Ocean University of China, Qingdao 266003, China
| |
Collapse
|
14
|
Mohamad S, Rahmah S, Zainuddin RA, A Thallib Y, Razali RS, Jalilah M, Abd Ghaffar M, Lim LS, Chang YM, Qun Liang L, Das SK, Chen YM, Liew HJ. Hoven's carp Leptobarbus hoevenii strategized metabolism needs to cope with changing environment. Heliyon 2024; 10:e25559. [PMID: 38404778 PMCID: PMC10884815 DOI: 10.1016/j.heliyon.2024.e25559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 01/22/2024] [Accepted: 01/29/2024] [Indexed: 02/27/2024] Open
Abstract
Current water warming and freshwater acidification undoubtedly affect the life of aquatic animals especially ammonotelic teleost by altering their physiological responses. The effect of temperature (28 °C vs 32 °C) and pH (7 vs. 5) on the metabolic compromising strategies of Hoven's carp (Leptobarbus hoevenii) was investigated in this study. Fishes were conditioned to (i) 28 °C + pH 7 (N28°C); (ii) 32 °C + pH 7 (N32°C); (iii) 28 °C + pH 5 (L28°C) and (iv) 32 °C + pH 5 (L32°C) for 20 days followed by osmorespiration assay. Results showed that feeding performance of Hoven's carp was significantly depressed when exposed to low pH conditions (L28°C and L32°C). However, by exposed Hoven's carp to L32°C induced high metabolic oxygen intake and ammonia excretion to about 2x-folds higher compared to the control group. As for energy mobilization, Hoven's carp mobilized liver and muscle protein under L28°C condition. Whereas under high temperature in both pH, Hoven's carp had the tendency to reserve energy in both of liver and muscle. The findings of this study revealed that Hoven's carp is sensitive to lower water pH and high temperature, thereby they remodeled their physiological needs to cope with the environmental changes condition.
Collapse
Affiliation(s)
- Suhaini Mohamad
- Higher Institution Center of Excellence (HICOE), Institute of Tropical Aquaculture and Fisheries, Universiti Malaysia Terengganu, 21030, Kuala Nerus, Malaysia
| | - Sharifah Rahmah
- Higher Institution Center of Excellence (HICOE), Institute of Tropical Aquaculture and Fisheries, Universiti Malaysia Terengganu, 21030, Kuala Nerus, Malaysia
- Faculty of Fisheries and Food Science, Universiti Malaysia Terengganu, 21030, Kuala Nerus, Malaysia
| | - Rabiatul Adawiyyah Zainuddin
- Higher Institution Center of Excellence (HICOE), Institute of Tropical Aquaculture and Fisheries, Universiti Malaysia Terengganu, 21030, Kuala Nerus, Malaysia
| | - Yusnita A Thallib
- Higher Institution Center of Excellence (HICOE), Institute of Tropical Aquaculture and Fisheries, Universiti Malaysia Terengganu, 21030, Kuala Nerus, Malaysia
| | - Ros Suhaida Razali
- Higher Institution Center of Excellence (HICOE), Institute of Tropical Aquaculture and Fisheries, Universiti Malaysia Terengganu, 21030, Kuala Nerus, Malaysia
| | - Mohamad Jalilah
- Higher Institution Center of Excellence (HICOE), Institute of Tropical Aquaculture and Fisheries, Universiti Malaysia Terengganu, 21030, Kuala Nerus, Malaysia
| | - Mazlan Abd Ghaffar
- Higher Institution Center of Excellence (HICOE), Institute of Tropical Aquaculture and Fisheries, Universiti Malaysia Terengganu, 21030, Kuala Nerus, Malaysia
- Faculty of Science and Marine Environment, Universiti Malaysia Terengganu, 21030, Kuala Nerus, Malaysia
- Institute of Marine Biotechnology, Universiti Malaysia Terengganu, 21030, Kuala Nerus, Malaysia
| | - Leong-Seng Lim
- Borneo Marine Research Institute, Universiti Malaysia Sabah, Jalan UMS, 88400, Kota Kinabalu, Sabah, Malaysia
| | - Yu Mei Chang
- Heilongjiang Province's Key Laboratory of Fish Stress Resistance Breeding and Germplasm Characteristics on Special Habitats, Heilongjiang River Fisheries Research Institute, Chinese Academy of Fishery Science, Harbin, China
| | - Li Qun Liang
- Heilongjiang Province's Key Laboratory of Fish Stress Resistance Breeding and Germplasm Characteristics on Special Habitats, Heilongjiang River Fisheries Research Institute, Chinese Academy of Fishery Science, Harbin, China
| | - Simon Kumar Das
- Department of Earth Sciences and Environment, Faculty of Science and Technology, National University of Malaysia, 43600, UKM Bangi, Selangor, Malaysia
- Marine Ecosystem Research Centre, Faculty of Science and Technology, National University of Malaysia, 43600, UKM Bangi, Selangor, Malaysia
| | - Young-Mao Chen
- Marine Biotechnology, College of Life Sciences, National Taiwan Ocean University, Keelung, Taiwan
- Center of Excellence for the Oceans, National Taiwan Ocean University, Keelung, Taiwan
| | - Hon Jung Liew
- Higher Institution Center of Excellence (HICOE), Institute of Tropical Aquaculture and Fisheries, Universiti Malaysia Terengganu, 21030, Kuala Nerus, Malaysia
- Faculty of Fisheries and Food Science, Universiti Malaysia Terengganu, 21030, Kuala Nerus, Malaysia
- Heilongjiang Province's Key Laboratory of Fish Stress Resistance Breeding and Germplasm Characteristics on Special Habitats, Heilongjiang River Fisheries Research Institute, Chinese Academy of Fishery Science, Harbin, China
| |
Collapse
|
15
|
Alemany M. The Metabolic Syndrome, a Human Disease. Int J Mol Sci 2024; 25:2251. [PMID: 38396928 PMCID: PMC10888680 DOI: 10.3390/ijms25042251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Revised: 01/29/2024] [Accepted: 01/31/2024] [Indexed: 02/25/2024] Open
Abstract
This review focuses on the question of metabolic syndrome (MS) being a complex, but essentially monophyletic, galaxy of associated diseases/disorders, or just a syndrome of related but rather independent pathologies. The human nature of MS (its exceptionality in Nature and its close interdependence with human action and evolution) is presented and discussed. The text also describes the close interdependence of its components, with special emphasis on the description of their interrelations (including their syndromic development and recruitment), as well as their consequences upon energy handling and partition. The main theories on MS's origin and development are presented in relation to hepatic steatosis, type 2 diabetes, and obesity, but encompass most of the MS components described so far. The differential effects of sex and its biological consequences are considered under the light of human social needs and evolution, which are also directly related to MS epidemiology, severity, and relations with senescence. The triggering and maintenance factors of MS are discussed, with especial emphasis on inflammation, a complex process affecting different levels of organization and which is a critical element for MS development. Inflammation is also related to the operation of connective tissue (including the adipose organ) and the widely studied and acknowledged influence of diet. The role of diet composition, including the transcendence of the anaplerotic maintenance of the Krebs cycle from dietary amino acid supply (and its timing), is developed in the context of testosterone and β-estradiol control of the insulin-glycaemia hepatic core system of carbohydrate-triacylglycerol energy handling. The high probability of MS acting as a unique complex biological control system (essentially monophyletic) is presented, together with additional perspectives/considerations on the treatment of this 'very' human disease.
Collapse
Affiliation(s)
- Marià Alemany
- Faculty of Biology, Universitat de Barcelona, 08028 Barcelona, Catalonia, Spain
| |
Collapse
|
16
|
Pozo-Morales M, Cobham AE, Centola C, McKinney MC, Liu P, Perazzolo C, Lefort A, Libert F, Bai H, Rohner N, Singh SP. Starvation resistant cavefish reveal conserved mechanisms of starvation-induced hepatic lipotoxicity. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.01.10.574986. [PMID: 38260657 PMCID: PMC10802416 DOI: 10.1101/2024.01.10.574986] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2024]
Abstract
Starvation causes the accumulation of lipid droplets in the liver, a somewhat counterintuitive phenomenon that is nevertheless conserved from flies to humans. Much like fatty liver resulting from overfeeding, hepatic lipid accumulation (steatosis) during undernourishment can lead to lipotoxicity and atrophy of the liver. Here, we found that while surface populations of Astyanax mexicanus undergo this evolutionarily conserved response to starvation, the starvation-resistant cavefish larvae of the same species do not display an accumulation of lipid droplets upon starvation. Moreover, cavefish are resistant to liver atrophy during starvation, providing a unique system to explore strategies for liver protection. Using comparative transcriptomics between zebrafish, surface fish, and cavefish, we identified the fatty acid transporter slc27a2a/fatp2 to be correlated with the development of fatty liver. Pharmacological inhibition of slc27a2a in zebrafish rescues steatosis and atrophy of the liver upon starvation. Further, down-regulation of FATP2 in drosophila larvae inhibits the development of starvation-induced steatosis, suggesting the evolutionary conserved importance of the gene in regulating fatty liver upon nutrition deprivation. Overall, our study identifies a conserved, druggable target to protect the liver from atrophy during starvation.
Collapse
Affiliation(s)
- Macarena Pozo-Morales
- IRIBHM, Université Libre de Bruxelles (ULB), Route de Lennik 808, 1070 Brussels, Belgium
| | - Ansa E Cobham
- Stowers Institute for Medical Research, Kansas City, MO 64110, USA
| | - Cielo Centola
- Stowers Institute for Medical Research, Kansas City, MO 64110, USA
| | | | - Peiduo Liu
- Department of Genetics, Development, and Cell Biology, Iowa State University, Ames, IA 50011, USA
| | - Camille Perazzolo
- IRIBHM, Université Libre de Bruxelles (ULB), Route de Lennik 808, 1070 Brussels, Belgium
| | - Anne Lefort
- IRIBHM, Université Libre de Bruxelles (ULB), Route de Lennik 808, 1070 Brussels, Belgium
| | - Frédérick Libert
- IRIBHM, Université Libre de Bruxelles (ULB), Route de Lennik 808, 1070 Brussels, Belgium
| | - Hua Bai
- Department of Genetics, Development, and Cell Biology, Iowa State University, Ames, IA 50011, USA
| | - Nicolas Rohner
- Stowers Institute for Medical Research, Kansas City, MO 64110, USA
- Department of Cell Biology & Physiology, University of Kansas Medical Center, Kansas City, KS 66103, USA
| | - Sumeet Pal Singh
- IRIBHM, Université Libre de Bruxelles (ULB), Route de Lennik 808, 1070 Brussels, Belgium
| |
Collapse
|
17
|
Jin B, Wang R, Hu J, Wang Y, Cheng P, Zhang J, Zhang J, Xue G, Zhu Y, Zhang Y, Fang F, Liu Y, Li Y. Analysis of fecal microbiome and metabolome changes in goats with pregnant toxemia. BMC Vet Res 2024; 20:2. [PMID: 38172782 PMCID: PMC10763682 DOI: 10.1186/s12917-023-03849-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Accepted: 12/07/2023] [Indexed: 01/05/2024] Open
Abstract
BACKGROUND Pregnancy toxemia is a common disease, which occurs in older does that are pregnant with multiple lambs in the third trimester. Most of the sick goats die within a few days, which can seriously impact the economic benefits of goat breeding enterprises. The disease is believed to be caused by malnutrition, stress, and other factors, that lead to the disorder of lipid metabolism, resulting in increased ketone content, ketosis, ketonuria, and neurological symptoms. However, the changes in gut microbes and their metabolism in this disease are still unclear. The objective of this experiment was to evaluate the effect of toxemia of pregnancy on the fecal microbiome and metabolomics of does. RESULTS Eight pregnant does suspected of having toxemia of pregnancy (PT group) and eight healthy does during the same pregnancy (NC group) were selected. Clinical symptoms and pathological changes at necropsy were observed, and liver tissue samples were collected for pathological sections. Jugular venous blood was collected before morning feeding to detect biochemical indexes. Autopsy revealed that the liver of the pregnancy toxemia goat was enlarged and earthy yellow, and the biochemical results showed that the serum levels of aspartate aminotransferase (AST) and β-hydroxybutyric acid (B-HB) in the PT group were significantly increased, while calcium (Ca) levels were significantly reduced. Sections showed extensive vacuoles in liver tissue sections. The microbiome analysis found that the richness and diversity of the PT microbiota were significantly reduced. Metabolomic analysis showed that 125 differential metabolites were screened in positive ion mode and enriched in 12 metabolic pathways. In negative ion mode, 100 differential metabolites were screened and enriched in 7 metabolic pathways. CONCLUSIONS Evidence has shown that the occurrence of pregnancy toxemia is related to gut microbiota, and further studies are needed to investigate its pathogenesis and provide research basis for future preventive measures of this disease.
Collapse
Affiliation(s)
- Bingyan Jin
- Anhui Provincial Key Laboratory of Local Livestock Poultry, Genetical Resource Conservation and Breeding, College of Animal Science and Technology, Anhui Agriculture University, 130 Changjiang West Road, 230036, Hefei, Anhui, China
| | - Ruoqian Wang
- Anhui Provincial Key Laboratory of Local Livestock Poultry, Genetical Resource Conservation and Breeding, College of Animal Science and Technology, Anhui Agriculture University, 130 Changjiang West Road, 230036, Hefei, Anhui, China
| | - Jiada Hu
- Anhui Provincial Key Laboratory of Local Livestock Poultry, Genetical Resource Conservation and Breeding, College of Animal Science and Technology, Anhui Agriculture University, 130 Changjiang West Road, 230036, Hefei, Anhui, China
| | - Yan Wang
- Anhui Provincial Key Laboratory of Local Livestock Poultry, Genetical Resource Conservation and Breeding, College of Animal Science and Technology, Anhui Agriculture University, 130 Changjiang West Road, 230036, Hefei, Anhui, China
| | - Panpan Cheng
- Anhui Provincial Key Laboratory of Local Livestock Poultry, Genetical Resource Conservation and Breeding, College of Animal Science and Technology, Anhui Agriculture University, 130 Changjiang West Road, 230036, Hefei, Anhui, China
| | - Jiancong Zhang
- Anhui Provincial Key Laboratory of Local Livestock Poultry, Genetical Resource Conservation and Breeding, College of Animal Science and Technology, Anhui Agriculture University, 130 Changjiang West Road, 230036, Hefei, Anhui, China
| | - Jiahui Zhang
- Anhui Provincial Key Laboratory of Local Livestock Poultry, Genetical Resource Conservation and Breeding, College of Animal Science and Technology, Anhui Agriculture University, 130 Changjiang West Road, 230036, Hefei, Anhui, China
| | - Gang Xue
- Anhui Provincial Key Laboratory of Local Livestock Poultry, Genetical Resource Conservation and Breeding, College of Animal Science and Technology, Anhui Agriculture University, 130 Changjiang West Road, 230036, Hefei, Anhui, China
| | - Yan Zhu
- Anhui Provincial Key Laboratory of Local Livestock Poultry, Genetical Resource Conservation and Breeding, College of Animal Science and Technology, Anhui Agriculture University, 130 Changjiang West Road, 230036, Hefei, Anhui, China
| | - Yunhai Zhang
- Anhui Provincial Key Laboratory of Local Livestock Poultry, Genetical Resource Conservation and Breeding, College of Animal Science and Technology, Anhui Agriculture University, 130 Changjiang West Road, 230036, Hefei, Anhui, China
| | - Fugui Fang
- Anhui Provincial Key Laboratory of Local Livestock Poultry, Genetical Resource Conservation and Breeding, College of Animal Science and Technology, Anhui Agriculture University, 130 Changjiang West Road, 230036, Hefei, Anhui, China
| | - Ya Liu
- Anhui Provincial Key Laboratory of Local Livestock Poultry, Genetical Resource Conservation and Breeding, College of Animal Science and Technology, Anhui Agriculture University, 130 Changjiang West Road, 230036, Hefei, Anhui, China.
| | - Yunsheng Li
- Anhui Provincial Key Laboratory of Local Livestock Poultry, Genetical Resource Conservation and Breeding, College of Animal Science and Technology, Anhui Agriculture University, 130 Changjiang West Road, 230036, Hefei, Anhui, China.
| |
Collapse
|
18
|
Rubin AM, Seebacher F. Feeding frequency does not interact with BPA exposure to influence metabolism or behaviour in zebrafish (Danio rerio). Physiol Behav 2024; 273:114403. [PMID: 37939830 DOI: 10.1016/j.physbeh.2023.114403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 10/22/2023] [Accepted: 11/03/2023] [Indexed: 11/10/2023]
Abstract
Resource limitation can constrain energy (ATP) production, and thereby affect locomotion and behaviour such as exploration of novel environments and boldness. Consequently, ecological processes such as dispersal and interactions within and between species may be influenced by food availability. Energy metabolism, and behaviour are regulated by endocrine signalling, and may therefore be impacted by endocrine disrupting compounds (EDCs) including bisphenol A (BPA) derived from plastic manufacture and pollution. It is important to determine the impacts of these novel environmental contexts to understand how human activity alters individual physiology and behaviour and thereby populations. Our aim was to determine whether BPA exposure interacts with feeding frequency to alter metabolism and behaviour. In a fully factorial experiment, we show that low feeding frequency reduced zebrafish (Danio rerio) mass, condition, resting metabolic rates, total distance moved and speed in a novel arena, as well as anxiety indicated by the number of times fish returned to a dark shelter. However, feeding frequency did not significantly affect maximal metabolic rates, aerobic scope, swimming performance, latency to leave a shelter, or metabolic enzyme activities (citrate synthase and lactate dehydrogenase). Natural or anthropogenic fluctuation in food resources can therefore impact energetics and movement of animals with repercussions for ecological processes such as dispersal. BPA exposure reduced LDH activity and body mass, but did not interact with feeding frequency. Hence, behaviour of adult fish is relatively insensitive to disruption by BPA. However, alteration of LDH activity by BPA could disrupt lactate metabolism and signalling and together with reduction in body mass could affect size-dependent reproductive output. BPA released by plastic manufacture and pollution can thereby impact conservation and management of natural resources.
Collapse
Affiliation(s)
- Alexander M Rubin
- School of Life and Environmental Sciences, University of Sydney, Heydon-Laurence Building A08, Sydney, NSW 2006, Australia
| | - Frank Seebacher
- School of Life and Environmental Sciences, University of Sydney, Heydon-Laurence Building A08, Sydney, NSW 2006, Australia.
| |
Collapse
|
19
|
Li P, Wu G. Characteristics of Nutrition and Metabolism in Dogs and Cats. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2024; 1446:55-98. [PMID: 38625525 DOI: 10.1007/978-3-031-54192-6_4] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/17/2024]
Abstract
Domestic dogs and cats have evolved differentially in some aspects of nutrition, metabolism, chemical sensing, and feeding behavior. The dogs have adapted to omnivorous diets containing taurine-abundant meat and starch-rich plant ingredients. By contrast, domestic cats must consume animal-sourced foods for survival, growth, and development. Both dogs and cats synthesize vitamin C and many amino acids (AAs, such as alanine, asparagine, aspartate, glutamate, glutamine, glycine, proline, and serine), but have a limited ability to form de novo arginine and vitamin D3. Compared with dogs, cats have greater endogenous nitrogen losses and higher dietary requirements for AAs (particularly arginine, taurine, and tyrosine), B-complex vitamins (niacin, thiamin, folate, and biotin), and choline; exhibit greater rates of gluconeogenesis; are less sensitive to AA imbalances and antagonism; are more capable of concentrating urine through renal reabsorption of water; and cannot tolerate high levels of dietary starch due to limited pancreatic α-amylase activity. In addition, dogs can form sufficient taurine from cysteine (for most breeds); arachidonic acid from linoleic acid; eicosapentaenoic acid and docosahexaenoic acid from α-linolenic acid; all-trans-retinol from β-carotene; and niacin from tryptophan. These synthetic pathways, however, are either absent or limited in all cats due to (a) no or low activities of key enzymes (including pyrroline-5-carboxylate synthase, cysteine dioxygenase, ∆6-desaturase, β-carotene dioxygenase, and quinolinate phosphoribosyltransferase) and (b) diversion of intermediates to other metabolic pathways. Dogs can thrive on one large meal daily, select high-fat over low-fat diets, and consume sweet substances. By contrast, cats eat more frequently during light and dark periods, select high-protein over low-protein diets, refuse dry food, enjoy a consistent diet, and cannot taste sweetness. This knowledge guides the feeding and care of dogs and cats, as well as the manufacturing of their foods. As abundant sources of essential nutrients, animal-derived foodstuffs play important roles in optimizing the growth, development, and health of the companion animals.
Collapse
Affiliation(s)
- Peng Li
- North American Renderers Association, Alexandria, VA, 22314, USA
| | - Guoyao Wu
- Department of Animal Science, Texas A&M University, College Station, TX, 77843, USA.
| |
Collapse
|
20
|
Song Z, Griesser M, Schuppli C, van Schaik CP. Does the expensive brain hypothesis apply to amphibians and reptiles? BMC Ecol Evol 2023; 23:77. [PMID: 38114918 PMCID: PMC10729550 DOI: 10.1186/s12862-023-02188-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Accepted: 12/09/2023] [Indexed: 12/21/2023] Open
Abstract
Vertebrate brains show extensive variation in relative size. The expensive brain hypothesis argues that one important source of this variation is linked to a species' ability to generate the energy required to sustain the brain, especially during periods of unavoidable food scarcity. Here we ask whether this hypothesis, tested so far in endothermic vertebrates, also applies to ectotherms, where ambient temperature is an additional major aspect of energy balance. Phylogenetic comparative analyses of reptiles and amphibians support the hypothesis. First, relative brain size increases with higher body temperature in those species active during the day that can gain free energy by basking. Second, relative brain size is smaller among nocturnal species, which generally face less favorable energy budgets, especially when maintaining high body temperature. However, we do not find an effect of seasonal variation in ambient temperature or food on brain size, unlike in endotherms. We conclude that the factors affecting energy balance in ectotherms and endotherms are overlapping but not identical. We therefore discuss the idea that when body temperatures are seasonally very low, cognitive benefits may be thwarted and selection on larger brain size may be rare. Indeed, mammalian hibernators may show similarities to ectotherms.
Collapse
Affiliation(s)
- Zitan Song
- Comparative Socioecology group, Department for the Ecology of Animal Societies, Max Planck Institute for Animal Behavior, 78467, Konstanz, Germany.
| | - Michael Griesser
- Department of Biology, University of Konstanz, 78467, Konstanz, Germany
- Centre for the Advanced Study of Collective Behaviour, University of Konstanz, 78467, Konstanz, Germany
- Department of Collective Behavior, Max Planck Institute of Animal Behavior, 78467, Konstanz, Germany
| | - Caroline Schuppli
- Development and Evolution of Cognition Group, Max Planck Institute for Animal Behavior, 78467, Konstanz, Germany
| | - Carel P van Schaik
- Comparative Socioecology group, Department for the Ecology of Animal Societies, Max Planck Institute for Animal Behavior, 78467, Konstanz, Germany
- Department of Evolutionary Biology and Environmental Studies, University of Zurich, Zurich, 8057, Switzerland
- Center for the Interdisciplinary Study of language Evolution, University of Zurich, Zurich, 8057, Switzerland
| |
Collapse
|
21
|
Chiang MH, Lin YC, Wu T, Wu CL. Thermosensation and Temperature Preference: From Molecules to Neuronal Circuits in Drosophila. Cells 2023; 12:2792. [PMID: 38132112 PMCID: PMC10741703 DOI: 10.3390/cells12242792] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 12/01/2023] [Accepted: 12/06/2023] [Indexed: 12/23/2023] Open
Abstract
Temperature has a significant effect on all physiological processes of animals. Suitable temperatures promote responsiveness, movement, metabolism, growth, and reproduction in animals, whereas extreme temperatures can cause injury or even death. Thus, thermosensation is important for survival in all animals. However, mechanisms regulating thermosensation remain unexplored, mostly because of the complexity of mammalian neural circuits. The fruit fly Drosophila melanogaster achieves a desirable body temperature through ambient temperature fluctuations, sunlight exposure, and behavioral strategies. The availability of extensive genetic tools and resources for studying Drosophila have enabled scientists to unravel the mechanisms underlying their temperature preference. Over the past 20 years, Drosophila has become an ideal model for studying temperature-related genes and circuits. This review provides a comprehensive overview of our current understanding of thermosensation and temperature preference in Drosophila. It encompasses various aspects, such as the mechanisms by which flies sense temperature, the effects of internal and external factors on temperature preference, and the adaptive strategies employed by flies in extreme-temperature environments. Understanding the regulating mechanisms of thermosensation and temperature preference in Drosophila can provide fundamental insights into the underlying molecular and neural mechanisms that control body temperature and temperature-related behavioral changes in other animals.
Collapse
Affiliation(s)
- Meng-Hsuan Chiang
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan; (M.-H.C.); (Y.-C.L.)
| | - Yu-Chun Lin
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan; (M.-H.C.); (Y.-C.L.)
| | - Tony Wu
- Department of Neurology, New Taipei Municipal TuCheng Hospital, Chang Gung Memorial Hospital, New Taipei City 23652, Taiwan;
| | - Chia-Lin Wu
- Department of Neurology, New Taipei Municipal TuCheng Hospital, Chang Gung Memorial Hospital, New Taipei City 23652, Taiwan;
- Department of Biochemistry, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
- Brain Research Center, National Tsing Hua University, Hsinchu 30013, Taiwan
| |
Collapse
|
22
|
Pahl CC, Ruedas LA. Big boned: How fat storage and other adaptations influenced large theropod foraging ecology. PLoS One 2023; 18:e0290459. [PMID: 37910492 PMCID: PMC10619836 DOI: 10.1371/journal.pone.0290459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Accepted: 08/08/2023] [Indexed: 11/03/2023] Open
Abstract
Dinosaur foraging ecology has been the subject of scientific interest for decades, yet much of what we understand about it remains hypothetical. We wrote an agent-based model (ABM) to simulate meat energy sources present in dinosaur environments, including carcasses of giant sauropods, along with living, huntable prey. Theropod dinosaurs modeled in this environment (specifically allosauroids, and more particularly, Allosaurus Marsh, 1877) were instantiated with heritable traits favorable to either hunting success or scavenging success. If hunter phenotypes were more reproductively successful, their traits were propagated into the population through their offspring, resulting in predator specialists. If selective pressure favored scavenger phenotypes, the population would evolve to acquire most of their calories from carrion. Data generated from this model strongly suggest that theropods in sauropod-dominated systems evolved to detect carcasses, consume and store large quantities of fat, and dominate carcass sites. Broadly speaking, selective forces did not favor predatory adaptations, because sauropod carrion resource pools, as we modeled them, were too profitable for prey-based resource pools to be significant. This is the first research to test selective pressure patterns in dinosaurs, and the first to estimate theropod mass based on metabolic constraints.
Collapse
Affiliation(s)
- Cameron C. Pahl
- Department of Biology and Museum of Vertebrate Biology, Science Research and Teaching Center—246, Portland State University, Portland, Oregon, United States of America
| | - Luis A. Ruedas
- Department of Biology and Museum of Vertebrate Biology, Science Research and Teaching Center—246, Portland State University, Portland, Oregon, United States of America
| |
Collapse
|
23
|
Balampekou EI, Koveos DS, Kapranas A, Menexes GC, Kouloussis NA. The Roles of Mating, Age, and Diet in Starvation Resistance in Bactrocera oleae (Olive Fruit Fly). INSECTS 2023; 14:841. [PMID: 37999040 PMCID: PMC10672083 DOI: 10.3390/insects14110841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Revised: 10/12/2023] [Accepted: 10/18/2023] [Indexed: 11/25/2023]
Abstract
The olive fruit fly (Bactrocera oleae (Rossi) (Diptera: Tephritidae)), although a pest of major economic importance for the olive industry, has not been sufficiently studied with respect to the factors affecting its survival resistance to food deprivation. In the present study, we examined the effect of the interaction between mating status (virgin/mated), age class (11-20/21-30/31-40/41-50), and diet quality (protein plus sugar or only sugar) on starvation resistance in B. oleae under constant laboratory conditions. We conducted a total of 16 treatments (2 × 4 × 2 = 16) for each gender. Our results showed that starvation resistance in B. oleae did not differ significantly between females and males. The main conclusions of our study regarding mating status, age, and diet indicated that mated adults showed much less starvation resistance compared to virgins, younger adults endured longer, and the adults fed a restricted diet endured longer than those fed a full diet. A three-way interaction between mating status, diet, and age class was also identified and was the same for both genders. The interaction between mating status, age class, and diet also had a significant influence on starvation resistance in both sexes.
Collapse
Affiliation(s)
| | | | | | | | - Nikos A. Kouloussis
- School of Agriculture, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (E.I.B.); (D.S.K.); (A.K.); (G.C.M.)
| |
Collapse
|
24
|
Bateson M, Pepper GV. Food insecurity as a cause of adiposity: evolutionary and mechanistic hypotheses. Philos Trans R Soc Lond B Biol Sci 2023; 378:20220228. [PMID: 37661744 PMCID: PMC10475876 DOI: 10.1098/rstb.2022.0228] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Accepted: 07/27/2023] [Indexed: 09/05/2023] Open
Abstract
Food insecurity (FI) is associated with obesity among women in high-income countries. This seemingly paradoxical association can be explained by the insurance hypothesis, which states that humans possess evolved mechanisms that increase fat storage to buffer against energy shortfall when access to food is unpredictable. The evolutionary logic underlying the insurance hypothesis is well established and experiments on animals confirm that exposure to unpredictable food causes weight gain, but the mechanisms involved are less clear. Drawing on data from humans and other vertebrates, we review a suite of behavioural and physiological mechanisms that could increase fat storage under FI. FI causes short-term hyperphagia, but evidence that it is associated with increased total energy intake is lacking. Experiments on animals suggest that unpredictable food causes increases in retained metabolizable energy and reductions in energy expenditure sufficient to fuel weight gain in the absence of increased food intake. Reducing energy expenditure by diverting energy from somatic maintenance into fat stores should improve short-term survival under FI, but the trade-offs potentially include increased disease risk and accelerated ageing. We conclude that exposure to FI plausibly causes increased adiposity, poor health and shorter lifespan. This article is part of a discussion meeting issue 'Causes of obesity: theories, conjectures and evidence (Part II)'.
Collapse
Affiliation(s)
- Melissa Bateson
- Centre for Healther Lives and Biosciences Institute, Newcastle University, Newcastle upon Tyne, NE2 4HH, UK
| | - Gillian V. Pepper
- Department of Psychology, Northumbria University, Newcastle upon Tyne, NE1 8ST, UK
| |
Collapse
|
25
|
Iwashita M, Tran A, Garcia M, Cashon J, Burbano D, Salgado V, Hasegawa M, Balmilero-Unciano R, Politan K, Wong M, Lee RWY, Yoshizawa M. Metabolic shift toward ketosis in asocial cavefish increases social-like affinity. BMC Biol 2023; 21:219. [PMID: 37840141 PMCID: PMC10577988 DOI: 10.1186/s12915-023-01725-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Accepted: 10/04/2023] [Indexed: 10/17/2023] Open
Abstract
BACKGROUND Social affinity and collective behavior are nearly ubiquitous in the animal kingdom, but many lineages feature evolutionarily asocial species. These solitary species may have evolved to conserve energy in food-sparse environments. However, the mechanism by which metabolic shifts regulate social affinity is not well investigated. RESULTS In this study, we used the Mexican tetra (Astyanax mexicanus), which features riverine sighted surface (surface fish) and cave-dwelling populations (cavefish), to address the impact of metabolic shifts on asociality and other cave-associated behaviors in cavefish, including repetitive turning, sleeplessness, swimming longer distances, and enhanced foraging behavior. After 1 month of ketosis-inducing ketogenic diet feeding, asocial cavefish exhibited significantly higher social affinity, whereas social affinity regressed in cavefish fed the standard diet. The ketogenic diet also reduced repetitive turning and swimming in cavefish. No major behavioral shifts were found regarding sleeplessness and foraging behavior, suggesting that other evolved behaviors are not largely regulated by ketosis. We further examined the effects of the ketogenic diet via supplementation with exogenous ketone bodies, revealing that ketone bodies are pivotal molecules positively associated with social affinity. CONCLUSIONS Our study indicated that fish that evolved to be asocial remain capable of exhibiting social affinity under ketosis, possibly linking the seasonal food availability and sociality.
Collapse
Affiliation(s)
- Motoko Iwashita
- School of Life Sciences, University of Hawai'I at Mānoa, Honolulu, HI, 96822, USA
| | - Amity Tran
- School of Life Sciences, University of Hawai'I at Mānoa, Honolulu, HI, 96822, USA
| | - Marianne Garcia
- School of Life Sciences, University of Hawai'I at Mānoa, Honolulu, HI, 96822, USA
| | - Jia Cashon
- Hawai'i Institute of Marine Biology, University of Hawai'i at Mānoa, Kāne'ohe, HI, 96744, USA
| | - Devanne Burbano
- School of Life Sciences, University of Hawai'I at Mānoa, Honolulu, HI, 96822, USA
| | - Vanessa Salgado
- School of Life Sciences, University of Hawai'I at Mānoa, Honolulu, HI, 96822, USA
| | - Malia Hasegawa
- School of Life Sciences, University of Hawai'I at Mānoa, Honolulu, HI, 96822, USA
| | | | - Kaylah Politan
- School of Life Sciences, University of Hawai'I at Mānoa, Honolulu, HI, 96822, USA
| | - Miki Wong
- Nā Pu'uwai Native Hawaiian Healthcare System, Kaunakakai, HI, 96748, USA
- Nutrition Services Department, Shriners Hospitals for Children, Honolulu, HI, 96826, USA
| | - Ryan W Y Lee
- Medical Staff Department, Shriners Hospitals for Children, Honolulu, HI, 96826, USA
| | - Masato Yoshizawa
- School of Life Sciences, University of Hawai'I at Mānoa, Honolulu, HI, 96822, USA.
| |
Collapse
|
26
|
Lopez LK, Gil MA, Crowley PH, Trimmer PC, Munson A, Ligocki IY, Michelangeli M, Sih A. Integrating animal behaviour into research on multiple environmental stressors: a conceptual framework. Biol Rev Camb Philos Soc 2023; 98:1345-1364. [PMID: 37004993 DOI: 10.1111/brv.12956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Revised: 03/18/2023] [Accepted: 03/24/2023] [Indexed: 04/04/2023]
Abstract
While a large body of research has focused on the physiological effects of multiple environmental stressors, how behavioural and life-history plasticity mediate multiple-stressor effects remains underexplored. Behavioural plasticity can not only drive organism-level responses to stressors directly but can also mediate physiological responses. Here, we provide a conceptual framework incorporating four fundamental trade-offs that explicitly link animal behaviour to life-history-based pathways for energy allocation, shaping the impact of multiple stressors on fitness. We first address how small-scale behavioural changes can either mediate or drive conflicts between the effects of multiple stressors and alternative physiological responses. We then discuss how animal behaviour gives rise to three additional understudied and interrelated trade-offs: balancing the benefits and risks of obtaining the energy needed to cope with stressors, allocation of energy between life-history traits and stressor responses, and larger-scale escape from stressors in space or time via large-scale movement or dormancy. Finally, we outline how these trade-offs interactively affect fitness and qualitative ecological outcomes resulting from multiple stressors. Our framework suggests that explicitly considering animal behaviour should enrich our mechanistic understanding of stressor effects, help explain extensive context dependence observed in these effects, and highlight promising avenues for future empirical and theoretical research.
Collapse
Affiliation(s)
- Laura K Lopez
- Department of Environmental Science & Policy, University of California, 2132 Wickson Hall, One Shields Avenue, Davis, CA, 95616, USA
- National Centre for Immunisation Research and Surveillance, Kids Research, Sydney Children's Hospitals Network, Corner Hawkesbury Road & Hainsworth Street, Westmead, New South Wales, 2145, Australia
| | - Michael A Gil
- Department of Environmental Science & Policy, University of California, 2132 Wickson Hall, One Shields Avenue, Davis, CA, 95616, USA
- Department of Ecology and Evolutionary Biology, University of Colorado, Ramaley N122/Campus Box 334, Boulder, CO, 80309-0334, USA
| | - Philip H Crowley
- Department of Biology, University of Kentucky, 195 Huguelet Drive, 101 Thomas Hunt Morgan Building, Lexington, KY, 40506-0225, USA
| | - Pete C Trimmer
- Department of Environmental Science & Policy, University of California, 2132 Wickson Hall, One Shields Avenue, Davis, CA, 95616, USA
- Department of Psychology, University of Warwick, University Road, Coventry, CV4 7AL, UK
| | - Amelia Munson
- Department of Environmental Science & Policy, University of California, 2132 Wickson Hall, One Shields Avenue, Davis, CA, 95616, USA
| | - Isaac Y Ligocki
- Department of Biology, Millersville University of Pennsylvania, Roddy Science Hall, PO Box 1002, Millersville, PA, 17551, USA
- Department of Evolution, Ecology, and Organismal Biology, Ohio State University, 318 W. 12th Avenue, Columbus, OH, 43210, USA
| | - Marcus Michelangeli
- Department of Environmental Science & Policy, University of California, 2132 Wickson Hall, One Shields Avenue, Davis, CA, 95616, USA
- Department of Wildlife, Fish & Environmental Studies, Swedish University of Agricultural Sciences, Skogsmarksgränd, Umeå, SE-907 36, Sweden
| | - Andrew Sih
- Department of Environmental Science & Policy, University of California, 2132 Wickson Hall, One Shields Avenue, Davis, CA, 95616, USA
| |
Collapse
|
27
|
Li Y, Wang X, Dong H, Xia Q, Zhao P. Transcriptomic Analysis of Starvation on the Silkworm Brain. INSECTS 2023; 14:658. [PMID: 37504664 PMCID: PMC10380768 DOI: 10.3390/insects14070658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 07/08/2023] [Accepted: 07/13/2023] [Indexed: 07/29/2023]
Abstract
Starvation imposes significant stress on animal survival and development, resulting in organ damage within the organism. The brain, being one of the most vital organs in animals, plays a crucial role in coordinating the physiological functions of other organs. However, performing brain experiments on the human body is challenging. In this work, we selected the silkworm, a model Lepidoptera organism, due to its favorable characteristics. A comprehensive transcriptome analysis was conducted on the brain of silkworm subjected to starvation treatment. The analysis of differentially expressed genes revealed significant alterations in 330 genes following the period of starvation. Through an enrichment analysis, we successfully identified pathways associated with metabolism, hormones, immunity, and diseases. Our findings highlight the transcriptional response of the brain to starvation, providing valuable insights for comprehending the impact of starvation stress in other animals.
Collapse
Affiliation(s)
- Yi Li
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City, Biological Science Research Center, Southwest University, Chongqing 400715, China
| | - Xin Wang
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City, Biological Science Research Center, Southwest University, Chongqing 400715, China
| | - Haonan Dong
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City, Biological Science Research Center, Southwest University, Chongqing 400715, China
| | - Qingyou Xia
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City, Biological Science Research Center, Southwest University, Chongqing 400715, China
| | - Ping Zhao
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City, Biological Science Research Center, Southwest University, Chongqing 400715, China
| |
Collapse
|
28
|
Kozel P, Novak T, Janžekovič F, Lipovšek S. Starvation hardiness as preadaptation for life in subterranean habitats. Sci Rep 2023; 13:9643. [PMID: 37316704 DOI: 10.1038/s41598-023-36556-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Accepted: 06/06/2023] [Indexed: 06/16/2023] Open
Abstract
Most subterranean habitats, especially caves, are considered extreme environments, mainly because of the limited and erratic food supply and constant darkness. In temperate regions, many climatic conditions, such as temperature and air humidity, are periodically less adverse or even more favourable in caves than the harsh seasonal weather on the surface. Accordingly, many animal species search for hibernacula in caves. These overwintering, non-specialized subterranean species (non-troglobionts) show various modes of dormancy and ongoing development. Since they do not feed, they all undergo periodic starvation, a preadaptation, which might evolve in permanent starvation hardiness, such as found in most specialized subterranean species (troglobionts). To this end, we performed a comparative analysis of energy-supplying compounds in eleven most common terrestrial non-troglobiont species during winter in central European caves. We found highly heterogeneous responses to starvation, which are rather consistent with the degree of energetic adaptation to the habitat than to overwintering mode. The consumption of energy-supplying compounds was strongly higher taxa-dependant; glycogen is the main energy store in gastropods, lipids in insects, and arachnids rely on both reserve compounds. We assume that permanent starvation hardiness in specialized subterranean species might evolved in many different ways as shown in this study.
Collapse
Affiliation(s)
- Peter Kozel
- Department of Biology, Faculty of Natural Sciences and Mathematics, University of Maribor, Koroška Cesta 160, 2000, Maribor, Slovenia.
- Research Centre of the Slovenian Academy of Science and Arts, Karst Research Institute, Titov Trg 2, 6230, Postojna, Slovenia.
| | - Tone Novak
- Department of Biology, Faculty of Natural Sciences and Mathematics, University of Maribor, Koroška Cesta 160, 2000, Maribor, Slovenia
| | - Franc Janžekovič
- Department of Biology, Faculty of Natural Sciences and Mathematics, University of Maribor, Koroška Cesta 160, 2000, Maribor, Slovenia
| | - Saška Lipovšek
- Department of Biology, Faculty of Natural Sciences and Mathematics, University of Maribor, Koroška Cesta 160, 2000, Maribor, Slovenia
- Faculty of Medicine, University of Maribor, Taborska Ulica 8, 2000, Maribor, Slovenia
- Faculty of Chemistry and Chemical Engineering, University of Maribor, Smetanova Ulica 17, 2000, Maribor, Slovenia
| |
Collapse
|
29
|
Cao X, Cui H, Ji X, Li B, Lu R, Zhang Y, Chen J. Determining the Potential Roles of Branched-Chain Amino Acids in the Regulation of Muscle Growth in Common Carp ( Cyprinus carpio) Based on Transcriptome and MicroRNA Sequencing. AQUACULTURE NUTRITION 2023; 2023:7965735. [PMID: 37303609 PMCID: PMC10257547 DOI: 10.1155/2023/7965735] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 05/05/2023] [Accepted: 05/10/2023] [Indexed: 06/13/2023]
Abstract
Branched-chain amino acids (BCAAs) can be critically involved in skeletal muscle growth and body energy homeostasis. Skeletal muscle growth is a complex process; some muscle-specific microRNAs (miRNAs) are involved in the regulation of muscle thickening and muscle mass. Additionally, the regulatory network between miRNA and messenger RNA (mRNA) in the modulation of the role of BCAAs on skeletal muscle growth in fish has not been studied. In this study, common carp was starved for 14 days, followed by a 14-day gavage therapy with BCAAs, to investigate some of the miRNAs and genes that contribute to the regulation of normal growth and maintenance of skeletal muscle in response to short-term BCAA starvation stress. Subsequently, the transcriptome and small RNAome sequencing of carp skeletal muscle were performed. A total of 43,414 known and 1,112 novel genes were identified, in addition to 142 known and 654 novel miRNAs targeting 22,008 and 33,824 targets, respectively. Based on their expression profiles, 2,146 differentially expressed genes (DEGs) and 84 differentially expressed miRNA (DEMs) were evaluated. Kyoto Encyclopedia of Genes and Genome pathways, including the proteasome, phagosome, autophagy in animals, proteasome activator complex, and ubiquitin-dependent protein catabolic process, were enriched for these DEGs and DEMs. Our findings revealed the role of atg5, map1lc3c, ctsl, cdc53, psma6, psme2, myl9, and mylk in skeletal muscle growth, protein synthesis, and catabolic metabolism. Furthermore, miR-135c, miR-192, miR-194, and miR-203a may play key roles in maintaining the normal activities of the organism by regulating genes related to muscle growth, protein synthesis, and catabolism. This study on transcriptome and miRNA reveals the potential molecular mechanisms underlying the regulation of muscle protein deposition and provides new insights into genetic engineering techniques to improve common carp muscle development.
Collapse
Affiliation(s)
- Xianglin Cao
- College of Fisheries, Henan Normal University, Xinxiang 453007, China
| | - Han Cui
- College of Fisheries, Henan Normal University, Xinxiang 453007, China
| | - Xinyu Ji
- College of Fisheries, Henan Normal University, Xinxiang 453007, China
| | - Baohua Li
- College of Fisheries, Henan Normal University, Xinxiang 453007, China
| | - Ronghua Lu
- College of Fisheries, Henan Normal University, Xinxiang 453007, China
| | - Yuru Zhang
- College of Fisheries, Henan Normal University, Xinxiang 453007, China
| | - Jianjun Chen
- College of Life Science, Henan Normal University, Xinxiang 453007, China
| |
Collapse
|
30
|
Rairat T, Hsieh MK, Lu YP, Ho WC, Wu HC, Chou CC. Effects of starvation on the pharmacokinetics and optimal dosages of florfenicol and associated serum biochemistry in Asian seabass (Lates calcarifer). J Vet Pharmacol Ther 2023; 46:136-143. [PMID: 36691109 DOI: 10.1111/jvp.13115] [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: 12/10/2022] [Revised: 12/22/2022] [Accepted: 01/02/2023] [Indexed: 01/25/2023]
Abstract
Starvation has influence on physiology and pharmacokinetic (PK) characteristics of many drugs in land animals. However, similar PK information in fish is lacking. The current study examined the effects of starvation on fish PK, taking florfenicol (FF) in Asian seabass as an example. FF was orally administered at a single dose of 10 mg/kg into 35-day starved fish reared at 25 and 30°C and the serum FF concentration was analyzed by HPLC-FLD. At 30°C, the absorption and elimination half-lives of the starved fish were increased by 30% (from 0.44 to 0.57 h) and 55% (from 7.2 to 11.18 h), respectively. The volume of distribution, clearance, and area under the curve were changed from 1.25 to 0.71 L/kg, 0.120 to 0.044 L/kg/h, and 88 to 228 h·μg/ml, respectively. Similar starvation-induced PK changes were also observed at 25°C. The serum biochemical parameters, mainly the alanine aminotransferase, aspartate aminotransferase, and glucose levels, were significantly reduced in the starvation group. Overall, FF absorption, distribution, and elimination rates were reduced by starvation, resulting in four to five times lower optimal dosage than the non-starved fish. Drug treatment in starved fish should be treated with caution as overdosing and/or tissue residues could perceivably occur.
Collapse
Affiliation(s)
- Tirawat Rairat
- Department of Fishery Biology, Faculty of Fisheries, Kasetsart University, Bangkok, Thailand
| | - Ming-Kun Hsieh
- Graduate Institute of Microbiology and Public Health, College of Veterinary Medicine, National Chung Hsing University, Taichung, Taiwan
| | - Yi-Ping Lu
- Biology Division, Animal Health Research Institute, Council of Agriculture, Executive Yuan, New Taipei City, Taiwan
| | - Wan-Cih Ho
- Department of Veterinary Medicine, College of Veterinary Medicine, National Chung Hsing University, Taichung, Taiwan
| | - Ho-Chien Wu
- Department of Veterinary Medicine, College of Veterinary Medicine, National Chung Hsing University, Taichung, Taiwan
| | - Chi-Chung Chou
- Department of Veterinary Medicine, College of Veterinary Medicine, National Chung Hsing University, Taichung, Taiwan
| |
Collapse
|
31
|
Brammer-Robbins E, Nouri MZ, Griffin EK, Aristizabal-Henao J, Denslow ND, Bowden JA, Larkin IV, Martyniuk CJ. Assessment of lipids and adrenal hormones in the Florida manatee (Trichechus manatus latirostris) from different habitats. Gen Comp Endocrinol 2023; 337:114250. [PMID: 36858274 DOI: 10.1016/j.ygcen.2023.114250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 02/09/2023] [Accepted: 02/24/2023] [Indexed: 03/02/2023]
Abstract
Florida manatees (Trichechus manatus latirostris), a federally protected species, are classified as threatened due to anthropogenic stressors. Manatees inhabit sites that are impacted by human activities that can negatively affect stress physiology and metabolism. Samples collected from healthy manatees (pregnant females, non-pregnant females, and males) at Crystal River and Indian River Lagoon in Florida, were assessed for adrenal hormones, proteins, glucose, and lipid content in plasma. The objective was to determine if healthy manatees sampled between 2010-2014 from the Indian River Lagoon exhibited evidence of stress compared to healthy manatees sampled between 2012-2019 from Crystal River. Plasma cortisol concentrations were not different in male and non-pregnant female manatees between sites but were elevated in pregnant manatees. Plasma aldosterone concentrations were elevated in Indian River Lagoon manatees relative to those at Crystal River, possibly due to differences in salinity and available freshwater between the two environments. Site differences were noted for plasma protein and glucose concentrations in manatees; additionally, differences between the sexes were also observed in glucose concentrations. Fifteen lipid subclasses, including oxidized lysophosphatidylcholines, oxidized phosphatidylcholines, oxidized triacylglycerols, were elevated in manatees from the Indian River Lagoon relative to manatees from Crystal River. Evidence of a stress response in healthy Indian River Lagoon manatees was lacking compared to Crystal River manatees. Differences in metabolites related to energy (glucose, protein, and lipids) may be related to site-specific variables, such as salinity and food availability/quality. This study generates novel data on plasma lipid profiles and provides cortisol, aldosterone, glucose, and protein values from healthy Florida manatees in two disparate sites that can be referenced in future studies. These data contribute to an improved understanding of manatee physiology to better inform population management.
Collapse
Affiliation(s)
- Elizabeth Brammer-Robbins
- Department of Physiological Sciences, College of Veterinary Medicine, University of Florida, Gainesville, FL, the United States of America; Center for Environmental and Human Toxicology, University of Florida, Gainesville, FL, the United States of America
| | - Mohammad-Zaman Nouri
- Center for Environmental and Human Toxicology, University of Florida, Gainesville, FL, the United States of America
| | - Emily K Griffin
- Department of Physiological Sciences, College of Veterinary Medicine, University of Florida, Gainesville, FL, the United States of America; Center for Environmental and Human Toxicology, University of Florida, Gainesville, FL, the United States of America
| | - Juan Aristizabal-Henao
- Department of Physiological Sciences, College of Veterinary Medicine, University of Florida, Gainesville, FL, the United States of America; BPGbio Inc., 500 Old Connecticut Path, Framingham, MA 01701, the United States of America
| | - Nancy D Denslow
- Department of Physiological Sciences, College of Veterinary Medicine, University of Florida, Gainesville, FL, the United States of America; Center for Environmental and Human Toxicology, University of Florida, Gainesville, FL, the United States of America; Genetics Institute, University of Florida, Gainesville, FL, the United States of America
| | - John A Bowden
- Department of Physiological Sciences, College of Veterinary Medicine, University of Florida, Gainesville, FL, the United States of America; Center for Environmental and Human Toxicology, University of Florida, Gainesville, FL, the United States of America; Department of Chemistry, University of Florida, Gainesville, FL 32611, the United States of America
| | - Iske V Larkin
- Aquatic Animal Health Program, Department of Large Animal Clinical Sciences, College of Veterinary Medicine, University of Florida Gainesville, FL, the United States of America
| | - Christopher J Martyniuk
- Department of Physiological Sciences, College of Veterinary Medicine, University of Florida, Gainesville, FL, the United States of America; Center for Environmental and Human Toxicology, University of Florida, Gainesville, FL, the United States of America.
| |
Collapse
|
32
|
Padrones MN, Cid FD, Chediack JG. Effects of corticosterone administration on the body condition and blood parameters of the house sparrow, Passer domesticus. JOURNAL OF EXPERIMENTAL ZOOLOGY. PART A, ECOLOGICAL AND INTEGRATIVE PHYSIOLOGY 2023; 339:369-382. [PMID: 36772870 DOI: 10.1002/jez.2683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 12/15/2022] [Accepted: 01/12/2023] [Indexed: 02/12/2023]
Abstract
Glucocorticoids are steroid hormones produced by the adrenal glands and released into the bloodstream in response to stressful situations. In birds, corticosterone (CORT) is the main glucocorticoid released under stress. Throughout their lives, animals in nature are continually exposed to noxious stimuli known as stressful events. Any alteration of homeostatic stability is a stressful situation and this alteration triggers physiological changes to restore homeostasis. Glucocorticoids are one of the components of the complex set of physiological and behavioral responses to stress. In this work, we use CORT supplied in drinking water to evaluate its effect in blood parameters and physiology in house sparrows (Passer domesticus). To accomplish this, P. domesticus were administered three different doses of CORT in drinking water for 72 h. Body mass, organ mass, pectoral muscle mass, leg muscle mass, and blood parameters (CORT, triglycerides, glucose and uric acid, heterophils/lymphocytes ratio, hematocrit, and serum protein profile) were determined before and after CORT treatment. A 15% decrease in body mass with a significant decrease in pectoral mass were observed after the higher CORT treatment, as well as a decrease in the plasma concentration of uric acid. Lastly, we found a reversal of the heterophils/lymphocytes ratio and a decrease in hematocrit. It was possible to establish first data for baseline and CORT-alteration values in serum protein profile for P. domesticus. Baseline and altered values of blood parameters and serum protein profile could be an important tool in field ecology because they provide important data to assess the physiological condition in wild birds.
Collapse
Affiliation(s)
- Marcelo N Padrones
- Laboratorio de Biología Integrativa, Instituto Multidisciplinario de Investigaciones Biológicas de San Luis (IMIBIO-SL), CONICET, San Luis, Argentina
- Área de Biología, Departamento de Biología, Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis, San Luis, Argentina
| | - Fabricio D Cid
- Laboratorio de Biología Integrativa, Instituto Multidisciplinario de Investigaciones Biológicas de San Luis (IMIBIO-SL), CONICET, San Luis, Argentina
- Área de Biología, Departamento de Biología, Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis, San Luis, Argentina
| | - Juan G Chediack
- Laboratorio de Biología Integrativa, Instituto Multidisciplinario de Investigaciones Biológicas de San Luis (IMIBIO-SL), CONICET, San Luis, Argentina
- Área de Biología, Departamento de Biología, Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis, San Luis, Argentina
| |
Collapse
|
33
|
Analyses of regulatory network and discovery of potential biomarkers for Korean rockfish (Sebastes schlegelii) in responses to starvation stress through transcriptome and metabolome. COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY. PART D, GENOMICS & PROTEOMICS 2023; 46:101061. [PMID: 36796184 DOI: 10.1016/j.cbd.2023.101061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2022] [Revised: 01/29/2023] [Accepted: 01/31/2023] [Indexed: 02/11/2023]
Abstract
Whether in aquaculture or in nature, starvation stress limits the growth of fish. The purpose of the study was to clarify the detailed molecular mechanisms underlying starvation stress in Korean rockfish (Sebastes schlegelii) through liver transcriptome and metabolome analysis. Transcriptome results showed that liver genes associated with cell cycle and fatty acid synthesis were down-regulated, whereas those related to fatty acid decomposition were up-regulated in the experimental group (EG; starved for 72 days) compared to the control group (CG; feeding). Metabolomic results showed that there were significant differences in the levels of metabolites related to nucleotide metabolism and energy metabolism, such as purine metabolism, histidine metabolism and oxidative phosphorylation. Five fatty acids (C22:6n-3; C22:5n-3; C20:5n-3; C20:4n-3; C18:3n-6) were selected as possible biomarkers of starvation stress from the differential metabolites of metabolome. Subsequently, correlation between these differential genes of lipid metabolism and cell cycle and differential metabolites were analyzed, and observed that these five fatty acids were significantly correlated with the differential genes. These results provide new clues for understanding the role of fatty acid metabolism and cell cycle in fish under starvation stress. It also provides a reference for promoting the biomarker identification of starvation stress and stress tolerance breeding research.
Collapse
|
34
|
Messina M, Iacumin L, Pascon G, Tulli F, Tibaldi E, Cardinaletti G. Effect of feed restriction and refeeding on body condition, digestive functionality and intestinal microbiota in rainbow trout (Oncorhynchus mykiss). FISH PHYSIOLOGY AND BIOCHEMISTRY 2023; 49:169-189. [PMID: 36680627 PMCID: PMC9935662 DOI: 10.1007/s10695-023-01170-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Accepted: 01/05/2023] [Indexed: 06/17/2023]
Abstract
The aim of the present work was to investigate the influence of fasting and refeeding on body condition, gut physiology and microbiota in reared O. mykiss. Ninety-six fish were randomly allotted among three groups subjected to different feeding plan: C (control, fed for 5 weeks); R (restricted ration over 3 weeks followed by 2 weeks feeding); F (fasted over 3 weeks followed by 2 weeks feeding) in a well's fresh water flow-through rearing plan. Sampling occurred at 0, 1, 2, 4, 7, 14 days during the refeeding period. At day 0 and throughout the feeding period until day 14, the weight of the fish was significantly affected by the feeding restriction. Feed deprivation reduced significantly the viscerosomatic and hepatosomatic indexes. Brush border membrane enzymes' specific activity was modulated by feeding regimes until day 7, to level in all experimental groups at day 14. At the end of the restricted/fasted period, the microbiota of the C group was made up of 70% of Actinobacteria, 24% of Proteobacteria, 4.2% of Firmicutes and < 1% of Bacteroides, while the restricted and fasted group were characterized by a strong reduction of Actinobacteria, and a significant increase in Bacteroidetes and Firmicutes. The feed deprivation determined a dysbiosis, allowing the development of different commensal or pathogenic bacteria. In conclusion, the effects of 2 weeks of feed deprivation, excluding those related to body weight, are gradually mitigated by refeeding, which allows the restoration of digestive functions and a healthy intestinal microbiota.
Collapse
Affiliation(s)
- Maria Messina
- Department of Agricultural, Food, Environmental and Animal Science, University of Udine, Udine, Italy
| | - Lucilla Iacumin
- Department of Agricultural, Food, Environmental and Animal Science, University of Udine, Udine, Italy
| | - Giulia Pascon
- Department of Agricultural, Food, Environmental and Animal Science, University of Udine, Udine, Italy
| | - Francesca Tulli
- Department of Agricultural, Food, Environmental and Animal Science, University of Udine, Udine, Italy
| | - Emilio Tibaldi
- Department of Agricultural, Food, Environmental and Animal Science, University of Udine, Udine, Italy
| | - Gloriana Cardinaletti
- Department of Agricultural, Food, Environmental and Animal Science, University of Udine, Udine, Italy
| |
Collapse
|
35
|
Abstract
The prevalence of neonatal hypoxic-ischemic encephalopathy (HIE), a devastating neurological injury, is increasing; thus, effective treatments and preventions are urgently needed. The underlying pathology of HIE remains unclear; recent research has focused on elucidating key features of the disease. A variety of diseases can be alleviated by consuming a ketogenic diet (KD) despite differences in pathogenesis and features, given the common mechanisms of KD-induced effects. Dietary modification is the most translatable, cost-efficient, and safest approach to treat acute or chronic neurological disorders and reduces reliance on pharmaceutical treatments. Evidence suggests that the KD can exert beneficial effects in animal models and in humans with brain injuries. The efficacy of the KD in preventing neuronal damage, motor alterations, and cognitive decline varies. Moreover, the KD may provide an alternative source of energy, enhance mitochondrial function, and reduce the expression of inflammatory and apoptotic mediators. Thus, this diet has attracted interest as a potential therapy for HIE. This review examined the role of the KD in HIE treatment and described the mechanisms by which ketone bodies (KBs) exert effects under pathological conditions and protect against brain damage; the evidence supports the implementation of dietary interventions as a therapeutic strategy for HIE. Future research should aim to elucidate the underlying mechanisms of the KD in patients with HIE and determine whether the effect of the KD on clinical outcomes can be reproduced in humans.
Collapse
Affiliation(s)
- Yue Zhou
- Department of Pharmacy, Xindu District People's Hospital of Chengdu, 610500 Chengdu, China
| | - Luqiang Sun
- Acupuncture and Tuina School, Chengdu University of Traditional Chinese Medicine, 610075 Chengdu, China
| | - Haichuan Wang
- Department of Paediatrics, Sichuan Academy of Medical Science & Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, 610072 Chengdu, China
| |
Collapse
|
36
|
Interactive effects of food deprivation state and hypoxia on the respiratory responses of postprandial rock crabs, Cancer irroratus. J Comp Physiol B 2023; 193:37-55. [PMID: 36166090 DOI: 10.1007/s00360-022-01462-5] [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: 05/24/2022] [Revised: 08/29/2022] [Accepted: 09/12/2022] [Indexed: 01/24/2023]
Abstract
Under the background of climate change, increasing attention has focused on the effects of ocean deoxygenation on marine organisms. However, few studies address the effects of different food deprivation states on hypoxia tolerance. We therefore investigated the metabolic responses of the Atlantic rock crab, Cancer irroratus (starved 28-35 days, fasted 3-5 days and recently fed). Starved-crab exhibited the lowest critical oxygen saturation (Scrit), while fed-crab had the highest Scrit. The fed-crab maintained an elevated postprandial oxygen consumption (MO2) even below the Scrit of fasted-crab indicating reserved aerobic scopes for critical activities in severe hypoxia. Following feeding, hypoxia (50% and 20% oxygen saturation, SO2) retarded the specific dynamic action resulting in lower peak MO2 and longer duration. The starved-crab exhibited a lower peak MO2, prolonged duration and higher energy expenditure than fasted-crab after feeding. The decline in arterial PO2 was most pronounced below the Scrit for both fasted- and starved-crab. The higher hemocyanin concentration ([Hc]) of fasted-crab (than starved-crab) suggested they had improved oxygen transport capacity, but hypoxia did not increase [Hc] during the 72-h experiment. Following feeding, the fasted-crab significantly increased L-lactate concentration ([L-lactate]) in 20% SO2, which was not observed in starved-crab. These results suggest starvation may trigger a cross-tolerance to hypoxia. Because crabs can undergo long periods of food deprivation in their natural environment, future studies should consider how this may affect their ability to deal with environmental perturbations.
Collapse
|
37
|
Aggarwal DD, Mishra P, Singh M. An analysis of direct and indirect effects in Drosophila melanogaster undergoing a few cycles of experimental evolution for stress-related traits. Comp Biochem Physiol B Biochem Mol Biol 2023; 263:110795. [PMID: 35970341 DOI: 10.1016/j.cbpb.2022.110795] [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: 03/21/2022] [Revised: 08/04/2022] [Accepted: 08/08/2022] [Indexed: 10/15/2022]
Abstract
The physiological mechanisms underpinning adaptations to starvation and cold stresses have been extensively studied in Drosophila, yet the understanding of correlated changes in stress-related and life-history traits, as well as the energetics of stress tolerance, still remains elusive. To answer the questions empirically in this context, we allowed D. melanogaster to evolve for either increased starvation or cold tolerance (24-generations / regime) in an experimental evolution system, and examined whether selection of either trait affects un-selected stress trait, as well as the impacts potential changes in life-history and mating success-related traits. Our results revealed remarkable changes in starvation/cold tolerance (up to 1.5-fold) as a direct effect of selection, while cold tolerance had been dramatically reduced (1.26-fold) in the starvation tolerant (ST) lines compared to control counterparts, although no such changes were evident in cold-tolerant (CT) lines. ST lines exhibited a higher level of body lipids and a reduced level of trehalose content, while CT lines accumulated a greater levels of body lipid and trehalose contents. Noticeably, we found that selection for starvation or cold tolerance positively correlates with larval development time, longevity, and copulation duration, indicating that these traits are among the most common targets of selection trajectories shaping stress tolerance. Altogether, this study highlights the complexity of mechanisms evolved in ST lines that contribute to enhanced starvation tolerance, but also negatively impact cold tolerance. Nevertheless, mechanisms foraging enhanced cold tolerance in CT lines appear not to target starvation tolerance. Moreover, the parallel changes in life history/mating success traits across stress regimes could indicate some generic pathways evolved in stressful environments, targeting life-history and mating success characteristics to optimize fitness.
Collapse
Affiliation(s)
- Dau Dayal Aggarwal
- Department of Biochemistry, University of Delhi South Campus, New Delhi 110021, India.
| | - Prachi Mishra
- Department of Biochemistry, University of Delhi South Campus, New Delhi 110021, India
| | - Manvender Singh
- Department of Biotechnology, University Institute of Technology, Maharshi Dayanand University, Rohtak 124001, India
| |
Collapse
|
38
|
Social isolation does not alter the relationship between flexibility in metabolic rate and growth in grass carp (Ctenopharyngodon idella) under changing food availability. J Comp Physiol B 2023; 193:95-108. [PMID: 36355208 DOI: 10.1007/s00360-022-01467-0] [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: 04/12/2022] [Revised: 10/18/2022] [Accepted: 10/26/2022] [Indexed: 11/12/2022]
Abstract
Growth and energy metabolism are highly flexible in fish species in response to food availability, and these two traits depend to some extent on the social rearing environment (e.g., isolated vs. group rearing). Currently, how social rearing environments influence flexibility in metabolic rate of fish and their ecological consequences (e.g., somatic growth) remain largely unknown. Here, we investigated how social isolation (i.e., group-reared vs. isolation-reared) and food availability (i.e., high vs. low) affect metabolic rates, growth and their correlations in a group-living fish, grass carp (Ctenopharyngodon idella), which were subjected to a 4-week growth experiment. The metabolic rates (e.g., standard metabolic rate, SMR; maximum metabolic rate, MMR; aerobic scope, AS = MMR-SMR) and morphology (e.g., body mass and length) of the fish in four treatments were measured at the beginning and end of the growth experiment, and then the growth parameters (e.g., food intake, FI; feeding efficiency, FE; and specific growth rate, SGR) were also obtained. We found that social isolation did impair growth of fish with individuals showing a lower SGR compared to those group-reared fish irrespective of food availability. However, the growth advantage of group-reared fish under two food availabilities did not result from their FIs or FEs. Metabolic rates (i.e., SMR) seemed to decrease in response to social isolation, but increased greater when fish were reared at high food ration. These shifts in metabolic rates were positively linked with individual differences in somatic growth; individuals who increased metabolic rates more grew faster, while those who increased their metabolic rates less or even reduced had a lower growth, but these links were independent on both social isolation and food ration. These results suggested that social isolation can inhibit the growth of individual fish, but not the AS. Flexibility in metabolic rates could confer a growth advantage under changing food availability, but the links between variation in energy metabolism and growth were not altered by social deprivation. Our study demonstrates the importance of metabolic plasticity accounting for inter-individual difference in growth performance under the challenges of changing food resource.
Collapse
|
39
|
Nędzarek A, Stepanowska K. The excretion of nitrogen and phosphorus and changes in nitrogen content in the Antarctic amphipod Waldeckia obesa and isopod Glyptonotus antarcticus during long-term starvation. THE EUROPEAN ZOOLOGICAL JOURNAL 2022. [DOI: 10.1080/24750263.2022.2107721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022] Open
Affiliation(s)
- A. Nędzarek
- Department of Aquatic Bioengineering and Aquaculture, Faculty of Food Sciences and Fisheries, West Pomeranian University of Technology Szczecin, Poland
| | - K. Stepanowska
- Department of Aquatic Bioengineering and Aquaculture, Faculty of Food Sciences and Fisheries, West Pomeranian University of Technology Szczecin, Poland
| |
Collapse
|
40
|
Chen X, Xu Y, Cui X, Zhang S, Zhong X, Ke J, Wu Y, Liu Z, Wei C, Ding Z, Xu J, Cheng H. Starvation Affects the Muscular Morphology, Antioxidant Enzyme Activity, Expression of Lipid Metabolism-Related Genes, and Transcriptomic Profile of Javelin Goby ( Synechogobius hasta). AQUACULTURE NUTRITION 2022; 2022:7057571. [PMID: 36860464 PMCID: PMC9973160 DOI: 10.1155/2022/7057571] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 11/15/2022] [Accepted: 12/03/2022] [Indexed: 06/18/2023]
Abstract
Fish in natural and cultivated environments can be challenged by starvation. However, inducing starvation in a controlled manner cannot only reduce feed consumption but also reduces aquatic eutrophication and even improves farmed fish quality. This study investigated the effects of starvation on the muscular function, morphology, and regulatory signaling in javelin goby (Synechogobius hasta) by evaluating the biochemical, histological, antioxidant, and transcriptional changes in the musculature of S. hasta subjected to 3, 7, and 14 days fasting. The muscle glycogen and triglyceride levels in S. hasta were gradually reduced under starvation, reaching their lowest at the end of the trial (P < 0.05). The levels of glutathione and superoxide dismutase were significantly elevated after 3-7 days of starvation (P < 0.05), but later returned to the level of the control group. The muscle of starved S. hasta developed structural abnormalities in some areas after 7 days of food deprivation, and more vacuolation and more atrophic myofibers were observed in 14-day fasted fish. The transcript levels of stearoyl-CoA desaturase 1 (scd1), the key gene involved in the biosynthesis of monounsaturated fatty acids, were markedly lower in the groups starved for 7 or more days (P < 0.05). However, the relative expressions of genes associated with lipolysis were decreased in the fasting experiment (P < 0.05). Similar declines in the transcriptional response to starvation were found in muscle fatp1 and ppar γ abundance (P < 0.05). Furthermore, the de novo transcriptome of muscle tissue from the control, 3-day and 14-day starved S. hasta generated 79,255 unigenes. The numbers of differentially expressed genes (DEGs) identified by pairwise comparisons among three groups were 3276, 7354, and 542, respectively. The enrichment analysis revealed that the DEGs were primarily involved in metabolism-related pathways, including ribosome, TCA pathway, and pyruvate metabolism. Moreover, the qRT-PCR results of 12 DEGs validated the expression trends observed in the RNA-seq data. Taken together, these findings demonstrated the specific phenotypical and molecular responses of muscular function and morphology in starved S. hasta, which may offer preliminary reference data for optimizing operational strategies incorporating fasting/refeeding cycles in aquaculture.
Collapse
Affiliation(s)
- Xiangning Chen
- Jiangsu Key Laboratory of Marine Biotechnology, Co-Innovation Center of Jiangsu Marine Bio-Industry Technology, Jiangsu Ocean University, Lianyungang 222005, China
- Key Laboratory of Cultivation and High-Value Utilization of Marine Organisms, Fisheries Research Institute of Fujian, Xiamen 361000, China
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Jiangsu Ocean University, Lianyungang 222005, China
| | - Yili Xu
- Jiangsu Key Laboratory of Marine Biotechnology, Co-Innovation Center of Jiangsu Marine Bio-Industry Technology, Jiangsu Ocean University, Lianyungang 222005, China
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Jiangsu Ocean University, Lianyungang 222005, China
| | - Xiangyu Cui
- Jiangsu Key Laboratory of Marine Biotechnology, Co-Innovation Center of Jiangsu Marine Bio-Industry Technology, Jiangsu Ocean University, Lianyungang 222005, China
| | - Siying Zhang
- Jiangsu Key Laboratory of Marine Biotechnology, Co-Innovation Center of Jiangsu Marine Bio-Industry Technology, Jiangsu Ocean University, Lianyungang 222005, China
| | - Xiangqi Zhong
- Jiangsu Key Laboratory of Marine Biotechnology, Co-Innovation Center of Jiangsu Marine Bio-Industry Technology, Jiangsu Ocean University, Lianyungang 222005, China
| | - Juntao Ke
- Jiangsu Key Laboratory of Marine Biotechnology, Co-Innovation Center of Jiangsu Marine Bio-Industry Technology, Jiangsu Ocean University, Lianyungang 222005, China
| | - Yuze Wu
- Jiangsu Key Laboratory of Marine Biotechnology, Co-Innovation Center of Jiangsu Marine Bio-Industry Technology, Jiangsu Ocean University, Lianyungang 222005, China
| | - Zhiyu Liu
- Key Laboratory of Cultivation and High-Value Utilization of Marine Organisms, Fisheries Research Institute of Fujian, Xiamen 361000, China
| | - Chaoqing Wei
- Jiangsu Key Laboratory of Marine Biotechnology, Co-Innovation Center of Jiangsu Marine Bio-Industry Technology, Jiangsu Ocean University, Lianyungang 222005, China
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Jiangsu Ocean University, Lianyungang 222005, China
| | - Zhujin Ding
- Jiangsu Key Laboratory of Marine Biotechnology, Co-Innovation Center of Jiangsu Marine Bio-Industry Technology, Jiangsu Ocean University, Lianyungang 222005, China
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Jiangsu Ocean University, Lianyungang 222005, China
| | - Jianhe Xu
- Jiangsu Key Laboratory of Marine Biotechnology, Co-Innovation Center of Jiangsu Marine Bio-Industry Technology, Jiangsu Ocean University, Lianyungang 222005, China
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Jiangsu Ocean University, Lianyungang 222005, China
| | - Hanliang Cheng
- Jiangsu Key Laboratory of Marine Biotechnology, Co-Innovation Center of Jiangsu Marine Bio-Industry Technology, Jiangsu Ocean University, Lianyungang 222005, China
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Jiangsu Ocean University, Lianyungang 222005, China
| |
Collapse
|
41
|
Dakic TB, Markelic MB, Ruzicic AA, Jevdjovic TV, Lakic IV, Djordjevic JD, Vujovic PZ. Hypothalamic insulin expression remains unaltered after short-term fasting in female rats. Endocrine 2022; 78:476-483. [PMID: 36301508 DOI: 10.1007/s12020-022-03235-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Accepted: 10/15/2022] [Indexed: 11/03/2022]
Abstract
PURPOSE Our previous study showed that 6-h fasting increased insulin expression in the hypothalamus of male rats. We, therefore, wanted to examine if this phenomenon occurs in female rats and whether it depended on the estrus cycle phase. METHODS Female rats in proestrus or diestrus were either exposed to 6-h fasting or had ad libitum access to food. The serum, cerebrospinal fluid, and hypothalamic insulin levels were determined using radioimmunoassay. The hypothalamic insulin mRNA expression was measured by RT-qPCR, while the hypothalamic insulin distribution was assessed immunohistochemically. RESULTS Albeit the short-term fasting lowered circulating insulin, both hypothalamic insulin mRNA expression and hypothalamic insulin content remained unaltered. As for the hypothalamic insulin distribution, strong insulin immunopositivity was noted primarily in ependymal cells lining the upper part of the third ventricle and some neurons mainly located within the periventricular nucleus. The pattern of insulin distribution was similar between the controls and the females exposed to fasting regardless of the estrous cycle phase. CONCLUSION The findings of this study indicate that the control of insulin expression in the hypothalamus differs from that in the pancreatic beta cells during short-term fasting. Furthermore, they also imply that the regulation of insulin expression in the female hypothalamus is different from males but independent of the estrus cycle phase.
Collapse
Affiliation(s)
- Tamara B Dakic
- Department for Comparative Physiology and Ecophysiology, Institute for Physiology and Biochemistry Ivan Djaja, University of Belgrade-Faculty of Biology, Studentski trg 16, 11000, Belgrade, Serbia.
| | - Milica B Markelic
- Department of Cell and Tissue Biology, Institute for Zoology, University of Belgrade-Faculty of Biology, Studentski trg 16, 11000, Belgrade, Serbia
| | - Aleksandra A Ruzicic
- Department for Comparative Physiology and Ecophysiology, Institute for Physiology and Biochemistry Ivan Djaja, University of Belgrade-Faculty of Biology, Studentski trg 16, 11000, Belgrade, Serbia
| | - Tanja V Jevdjovic
- Department for Comparative Physiology and Ecophysiology, Institute for Physiology and Biochemistry Ivan Djaja, University of Belgrade-Faculty of Biology, Studentski trg 16, 11000, Belgrade, Serbia
| | - Iva V Lakic
- Department for Comparative Physiology and Ecophysiology, Institute for Physiology and Biochemistry Ivan Djaja, University of Belgrade-Faculty of Biology, Studentski trg 16, 11000, Belgrade, Serbia
| | - Jelena D Djordjevic
- Department for Comparative Physiology and Ecophysiology, Institute for Physiology and Biochemistry Ivan Djaja, University of Belgrade-Faculty of Biology, Studentski trg 16, 11000, Belgrade, Serbia
| | - Predrag Z Vujovic
- Department for Comparative Physiology and Ecophysiology, Institute for Physiology and Biochemistry Ivan Djaja, University of Belgrade-Faculty of Biology, Studentski trg 16, 11000, Belgrade, Serbia
| |
Collapse
|
42
|
Blood Metabolites and Profiling Stored Adipose Tissue Reveal the Differential Migratory Strategies of Eurasian Reed and Sedge Warblers. BIRDS 2022. [DOI: 10.3390/birds3040024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023] Open
Abstract
The overall speed of bird migration is limited by the amount of fuel stores acquired during the initial phases of migration. The ability to mobilize fat is crucial for migratory birds that can exhibit different migratory strategies. Birds mobilize triglycerides during nocturnal flight thus increasing circulating fatty acids and glycerol to meet the metabolic demands of flight. Eurasian Reed (Acrocephalus scirpaceus) and Sedge (Acrocephalus schoenobaenus) Warblers were captured at Portuguese stopover sites during spring and autumn migration. These species were selected based on their different migration strategies and dietary preferences during migration. Blood metabolites and fat composition were analyzed to determine their nutritional states. Sedge Warblers had higher blood triglyceride and glycerol levels during post-flight fasting than in non-fasting periods. Furthermore, Sedge Warblers had higher triglyceride and glycerol levels than Eurasian Reed Warblers in both post-flight fasting and non-fasting condition. The differences found may reflect distinct approaches in re-feeding activity (e.g., feeding intensely) associated with the number of stopovers during migratory cycle. Dietary preferences affect the fat composition available for oxidation during long-term exercise in migratory flight. Nuclear magnetic resonance analysis of subcutaneous fat composition revealed that Sedge Warblers presented higher levels of polyunsaturated fatty acid levels than Eurasian Reed Warblers. The distinct lipidic profiles observed and differences in feeding ecology may explain the different migration strategies of these species. Overall and despite their ecological similarity, our study species showed pronounced differences in blood metabolites levels and subcutaneous fatty acids composition, likely attributed to the migratory strategy and foraging preferences during their migratory cycle.
Collapse
|
43
|
Ricci E, D'Aquino I, Paciello O, Whitfield V, Ressel L. Quantitative histologic evaluation reveals different degree of liver atrophy in cachectic and starved dogs. J Vet Diagn Invest 2022; 34:937-943. [PMID: 36184936 DOI: 10.1177/10406387221128326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Cases of neglect in dogs are among the forensic cases submitted most commonly for postmortem examination. Starvation is a form of primary protein-energy malnutrition in which the availability of food is severely restricted or absent; cachexia is a form of protein-energy malnutrition secondary to progressive metabolic derangement during chronic diseases. Despite both conditions leading to an emaciated appearance of the cadaver, discrimination between the two is crucial in forensic cases. We hypothesized that among emaciated dogs, the degree of liver atrophy in starved animals is higher than in cachectic ones, and that this can be investigated microscopically, regardless of the degree of cadaver decomposition. We studied 46 animals: 23 starved, 11 cachectic, and 12 control dogs. Portal tracts were identified by the presence of a bile duct and associated vascular structures recognizable by a thin rim of collagen still visible regardless of the degree of cadaver decomposition. The number of portal tracts per lpf (10×) was used as an indirect measure of atrophy. The number of portal tracts in starved dogs was significantly higher (p < 0.01) compared to both cachectic and control dogs, indicating a higher degree of liver atrophy in starvation. Measuring the density of portal tracts offers a reliable additional tool for discrimination between starvation and cachexia.
Collapse
Affiliation(s)
- Emanuele Ricci
- Department of Veterinary Anatomy, Physiology and Pathology, Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, Liverpool, United Kingdom
| | - Ilaria D'Aquino
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, Naples, Italy
| | - Orlando Paciello
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, Naples, Italy
| | | | - Lorenzo Ressel
- Department of Veterinary Anatomy, Physiology and Pathology, Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, Liverpool, United Kingdom
| |
Collapse
|
44
|
Gao X, Wang X, Wang X, Li H, Xu L, Fang Y, Cao S, Huang B, Chen H, Xing R, Liu B. Effect of winter feeding frequency on growth performance, biochemical blood parameters, oxidative stress, and appetite-related genes in Takifugu rubripes. FISH PHYSIOLOGY AND BIOCHEMISTRY 2022; 48:1167-1181. [PMID: 35941472 DOI: 10.1007/s10695-022-01107-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Accepted: 07/31/2022] [Indexed: 06/15/2023]
Abstract
Tiger pufferfish (Takifugu rubripes) is one of Asia's most economically valuable aquaculture species. However, winter production of this species in North China is limited by low water temperature and unavailability of high-quality feed, resulting in high mortality and low profitability. Therefore, the aim of this study was to evaluate the effect of feeding frequency (F1: one daily meal; F2: two daily meals; F3: four daily meals; F4: continuous diurnal feeding using a belt feeder) on the growth performance, plasma biochemistry, digestive and antioxidant enzyme activities, and expression of appetite-related genes in T. rubripes (initial weight: 266.80 ± 12.32 g) cultured during winter (18.0 ± 1.0 °C) for 60 days. The results showed that fish in the F3 group had the highest final weight, weight gain rate, specific growth rate, survival rate, and best feed conversion ratio. Additionally, daily feed intake increased significantly with increasing feeding frequency. The protein efficiency and lipid efficiency ratios of fish in the F3 group were significantly higher than those of fish in the other groups. Furthermore, total cholesterol, triglycerides, and glucose levels increased with increasing feeding frequency, peaking in the F2 group and decreasing under higher feeding frequencies. The antioxidant (superoxide dismutase, catalase, glutathione, and glutathione peroxidase) and digestive (trypsin, amylase, and lipase) enzyme activities of fish in the F1 group were significantly higher than those of fish in the F3 and F4 groups. Additionally, there was a decrease in orexin expression with increasing feeding frequency. In contrast, the expression levels of tachykinin, cholecystokinin, and leptin increased with increasing feeding frequency, peaking in the F4 group. Overall, the findings of this study indicated that a feeding frequency of four meals per day was optimal for improved growth performance of pufferfish juveniles cultured during winter.
Collapse
Affiliation(s)
- Xiaoqiang Gao
- Key Laboratory for Sustainable Development of Marine Fisheries, Ministry of Agriculture, Qingdao Key Laboratory for Marine Fish Breeding and Biotechnology, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, 266071, People's Republic of China
| | - Xinyi Wang
- Key Laboratory for Sustainable Development of Marine Fisheries, Ministry of Agriculture, Qingdao Key Laboratory for Marine Fish Breeding and Biotechnology, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, 266071, People's Republic of China
- College of Fisheries and Life Science, Ocean University, Shanghai, 201306, People's Republic of China
| | - Xi Wang
- Key Laboratory for Sustainable Development of Marine Fisheries, Ministry of Agriculture, Qingdao Key Laboratory for Marine Fish Breeding and Biotechnology, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, 266071, People's Republic of China
- College of Fisheries and Life Science, Ocean University, Shanghai, 201306, People's Republic of China
| | - Hongxu Li
- Key Laboratory for Sustainable Development of Marine Fisheries, Ministry of Agriculture, Qingdao Key Laboratory for Marine Fish Breeding and Biotechnology, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, 266071, People's Republic of China
| | - Liang Xu
- Key Laboratory for Sustainable Development of Marine Fisheries, Ministry of Agriculture, Qingdao Key Laboratory for Marine Fish Breeding and Biotechnology, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, 266071, People's Republic of China
| | - Yingying Fang
- Key Laboratory for Sustainable Development of Marine Fisheries, Ministry of Agriculture, Qingdao Key Laboratory for Marine Fish Breeding and Biotechnology, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, 266071, People's Republic of China
| | - Shuquan Cao
- Key Laboratory for Sustainable Development of Marine Fisheries, Ministry of Agriculture, Qingdao Key Laboratory for Marine Fish Breeding and Biotechnology, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, 266071, People's Republic of China
| | - Bin Huang
- Key Laboratory for Sustainable Development of Marine Fisheries, Ministry of Agriculture, Qingdao Key Laboratory for Marine Fish Breeding and Biotechnology, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, 266071, People's Republic of China
| | - Haibin Chen
- Yuhai Hongqi Ocean Engineering Co. LTD, Rizhao, 276800, People's Republic of China
| | - Rui Xing
- Yuhai Hongqi Ocean Engineering Co. LTD, Rizhao, 276800, People's Republic of China
| | - Baoliang Liu
- Key Laboratory for Sustainable Development of Marine Fisheries, Ministry of Agriculture, Qingdao Key Laboratory for Marine Fish Breeding and Biotechnology, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, 266071, People's Republic of China.
| |
Collapse
|
45
|
Abdul Razak S, Valentine S, Marsh T, Bauman J, Mohd-Assaad N, Scribner KT. Compositional Dynamics of Gastrointestinal Tract Microbiomes Associated with Dietary Transition and Feeding Cessation in Lake Sturgeon Larvae. Microorganisms 2022; 10:microorganisms10091872. [PMID: 36144474 PMCID: PMC9500890 DOI: 10.3390/microorganisms10091872] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Revised: 09/02/2022] [Accepted: 09/15/2022] [Indexed: 11/24/2022] Open
Abstract
Compromised nutritional conditions associated with dietary transitions and feeding cessation in the wild and during fish aquaculture operations are common and can impact growth and survival. These effects are especially prevalent during early ontogenetic stages. We quantified phenotypic and GI tract microbial community responses with an emphasis on protease-producing bacteria of lake sturgeon (Acipenser fulvescens) larvae, a species of aquacultural and conservational importance. To quantify responses associated with experimental food transition and feeding cessation, we performed a 36-day feeding experiment using two treatments: control and diet transition. However, larvae in the diet transition treatment failed to undergo transition and ceased feeding. Larvae in the diet transition treatment exhibited lower growth (total length and body weight) and survival than control larvae. Treatment had a greater effect than ontogenetic changes on taxonomic composition and diversity of the GI tract microbial community. Proteobacteria dominated the GI tract microbial community of the diet transition larvae whereas Firmicutes dominated the GI tracts of control larvae. Most of the 98 identified protease-producing isolates in both treatments were from genera Pseudomonas and Aeromonas: taxonomic groups that include known fish pathogens. Overall, failing to transition diets affected responses in growth and GI tract microbiome composition and diversity, with the later dysbiosis being an indicator of morbidity and mortality in larval lake sturgeon. Thus, microbiological interrogations can characterize responses to dietary regimes. The results can inform fish culturalists and microbiologists of the importance of dietary practices consistent with the establishment and maintenance of healthy GI tract microbiota and optimal growth during early ontogeny.
Collapse
Affiliation(s)
- Shairah Abdul Razak
- Department of Fisheries & Wildlife, Michigan State University, East Lansing, MI 48824, USA
- Department of Applied Physics, Faculty of Science & Technology, Universiti Kebangsaan Malaysia, Bangi 43600, Malaysia
| | - Shaley Valentine
- Department of Fisheries & Wildlife, Michigan State University, East Lansing, MI 48824, USA
| | - Terence Marsh
- Department of Microbiology and Molecular Genetics, Michigan State University, East Lansing, MI 48824, USA
| | - John Bauman
- Department of Fisheries & Wildlife, Michigan State University, East Lansing, MI 48824, USA
| | - Norfarhan Mohd-Assaad
- Department of Applied Physics, Faculty of Science & Technology, Universiti Kebangsaan Malaysia, Bangi 43600, Malaysia
- Institute of Systems Biology, Universiti Kebangsaan Malaysia, Bangi 43600, Malaysia
| | - Kim T. Scribner
- Department of Fisheries & Wildlife, Michigan State University, East Lansing, MI 48824, USA
- Department of Integrative Biology, Michigan State University, East Lansing, MI 48824, USA
- Correspondence:
| |
Collapse
|
46
|
Thermal fitness costs and benefits of developmental acclimation in fall armyworm. SCIENTIFIC AFRICAN 2022. [DOI: 10.1016/j.sciaf.2022.e01369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
|
47
|
Starvation alters growth, stress metabolites and physiological responses in juvenile great sturgeon (Huso huso). Anim Feed Sci Technol 2022. [DOI: 10.1016/j.anifeedsci.2022.115429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
48
|
Effects of Dietary Lanthanum Chloride on Growth Performance, Hematology and Serum Biochemistry of Juvenile Clarias gariepinus Catfish Fed Diets Amended with Mixtures of Aflatoxin B1 and Fumonisin B1. Toxins (Basel) 2022; 14:toxins14080553. [PMID: 36006215 PMCID: PMC9412473 DOI: 10.3390/toxins14080553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 06/13/2022] [Accepted: 06/28/2022] [Indexed: 11/27/2022] Open
Abstract
This study aimed to determine the effects of dietary lanthanum chloride on the growth and health performance of juvenile Clarias gariepinus when fed diets experimentally contaminated with mixtures of aflatoxin B1 and fumonisin B1. A control diet, (mycotoxin free, diet A), mycotoxin contaminated (diet B), and two mycotoxin-contaminated diets amended with lanthanum chloride (200 mg/kg, diet C; and 400 mg/kg, diet D), were fed to 450 fish divided equally into five groups (each with three replicates) for 56 days. The fish were randomly sampled at the time points: day 7, 28 and day 56 for the zootechnical, hematological and serum biochemical evaluations. The fish fed the diets amended with lanthanum chloride exhibited significantly (p < 0.05) better performance indices compared with the fish fed only the mycotoxin-contaminated diet. Lanthanum chloride elicited significant (p < 0.05) increases in erythrocytes and leucocytes count and significant (p < 0.05) reduction in serum transaminase, alkaline phosphatase, lactate dehydrogenase activities, urea and uric acid concentrations in the fish fed the diets contaminated with mixtures of aflatoxin B1 and fumonisin B1. The study indicates that juvenile Clarias gariepinus may be beneficially cultured with mycotoxin-contaminated grains amended with 200 to 400 mg/kg lanthanum chloride.
Collapse
|
49
|
Hebebrand J, Hildebrandt T, Schlögl H, Seitz J, Denecke S, Vieira D, Gradl-Dietsch G, Peters T, Antel J, Lau D, Fulton S. The role of hypoleptinemia in the psychological and behavioral adaptation to starvation: implications for anorexia nervosa. Neurosci Biobehav Rev 2022; 141:104807. [PMID: 35931221 DOI: 10.1016/j.neubiorev.2022.104807] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 06/11/2022] [Accepted: 07/31/2022] [Indexed: 12/17/2022]
Abstract
This narrative review aims to pinpoint mental and behavioral effects of starvation, which may be triggered by hypoleptinemia and as such may be amenable to treatment with leptin receptor agonists. The reduced leptin secretion results from the continuous loss of fat mass, thus initiating a graded triggering of diverse starvation related adaptive functions. In light of leptin receptors located in several peripheral tissues and many brain regions adaptations may extend beyond those of the hypothalamus-pituitary-end organ-axes. We focus on gastrointestinal tract and reward system as relevant examples of peripheral and central effects of leptin. Despite its association with extreme obesity, congenital leptin deficiency with its many parallels to a state of starvation allows the elucidation of mental symptoms amenable to treatment with exogenous leptin in both ob/ob mice and humans with this autosomal recessive disorder. For starvation induced behavioral changes with an intact leptin signaling we particularly focus on rodent models for which proof of concept has been provided for the causative role of hypoleptinemia. For humans, we highlight the major cognitive, emotional and behavioral findings of the Minnesota Starvation Experiment to contrast them with results obtained upon a lesser degree of caloric restriction. Evidence for hypoleptinemia induced mental changes also stems from findings obtained in lipodystrophies. In light of the recently reported beneficial cognitive, emotional and behavioral effects of metreleptin-administration in anorexia nervosa we discuss potential implications for the treatment of this eating disorder. We postulate that leptin has profound psychopharmacological effects in the state of starvation.
Collapse
Affiliation(s)
- Johannes Hebebrand
- Department of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy, University Hospital Essen, University of Duisburg-Essen, Wickenburgstr. 21, 45134 Essen, Germany
| | - Tom Hildebrandt
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY 10029 USA
| | - Haiko Schlögl
- Department of Endocrinology, Nephrology, Rheumatology, Division of Endocrinology, University Hospital Leipzig, Liebigstr. 20, 04103 Leipzig, Germany; Helmholtz Institute for Metabolic, Obesity and Vascular Research (HI-MAG) of the Helmholtz Zentrum München at the University of Leipzig and University Hospital Leipzig, Philipp-Rosenthal-Str. 27, 04103 Leipzig, Germany
| | - Jochen Seitz
- Department of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy, RWTH University Hospital Aachen, Germany
| | - Saskia Denecke
- Department of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy, University Hospital Essen, University of Duisburg-Essen, Wickenburgstr. 21, 45134 Essen, Germany
| | - Diana Vieira
- Department of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy, University Hospital Essen, University of Duisburg-Essen, Wickenburgstr. 21, 45134 Essen, Germany
| | - Gertraud Gradl-Dietsch
- Department of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy, University Hospital Essen, University of Duisburg-Essen, Wickenburgstr. 21, 45134 Essen, Germany
| | - Triinu Peters
- Department of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy, University Hospital Essen, University of Duisburg-Essen, Wickenburgstr. 21, 45134 Essen, Germany
| | - Jochen Antel
- Department of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy, University Hospital Essen, University of Duisburg-Essen, Wickenburgstr. 21, 45134 Essen, Germany
| | - David Lau
- Department of Nutrition, Neuroscience - University of Montreal & CRCHUM, Montréal QC H3T1J4, Canada
| | - Stephanie Fulton
- Department of Nutrition, Neuroscience - University of Montreal & CRCHUM, Montréal QC H3T1J4, Canada
| |
Collapse
|
50
|
Wang S, Tang H, Huang W, Liu X, Hou W, Cesar Piñero J, Peng X, Chen M. Octopamine receptor genes are involved in the starvation response of Rhopalosiphum padi (Hemiptera: Aphididae). INSECT MOLECULAR BIOLOGY 2022; 31:471-481. [PMID: 35312201 DOI: 10.1111/imb.12773] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Revised: 03/07/2022] [Accepted: 03/17/2022] [Indexed: 06/14/2023]
Abstract
Insect octopamine (OA) receptors are G-protein coupled receptors (GPCRs) that play essential roles in physiological and behavioural processes. However, there is little information about the function of OA receptors in the aphids' response to stress. From the genome sequence of Rhopalosiphum padi genome sequence, a cosmopolitan cereal pest, we identified six OA receptor genes RpOAMB, RpOctR, RpOctβ1R, RpOctβ2R, RpOctβ3R, RpOctR-like with two, one, one, four, four, seven exons, respectively. All the OA receptors contain seven transmembrane domains, which were the signature of GPCRs. Our results showed that (1) the contents of OA increased significantly after food starvation, (2) the transcription levels of RpOAMB, RpOctR, RpOctβ2R and RpOctβ3R increased after starvation and were restored after re-feeding, and (3) the expression levels of these four genes decreased significantly 48 h post-injection of dsRNA that targeted the respective genes. Knockdown of RpOctR, RpOctβ2R or RpOctβ3R genes significantly increased aphid mortality under 24 h starvation conditions. Mortality of R. padi injected with dsRpOctR or dsRpOctβ2R was significantly higher than control under 48 h starvation treatments. This is the first report on the role of OA receptors in the starvation response of aphids. The current study provides knowledge for a better understanding the physiological roles of insect OA receptors.
Collapse
Affiliation(s)
- Suji Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas, Key Laboratory of Crop Pest Integrated Pest Management on the Loess Plateau of Ministry of Agriculture and Rural Affairs, Northwest A&F University, Yangling, Shaanxi, China
| | - Hongcheng Tang
- State Key Laboratory of Crop Stress Biology for Arid Areas, Key Laboratory of Crop Pest Integrated Pest Management on the Loess Plateau of Ministry of Agriculture and Rural Affairs, Northwest A&F University, Yangling, Shaanxi, China
| | - Wenjie Huang
- State Key Laboratory of Crop Stress Biology for Arid Areas, Key Laboratory of Crop Pest Integrated Pest Management on the Loess Plateau of Ministry of Agriculture and Rural Affairs, Northwest A&F University, Yangling, Shaanxi, China
| | - Xi Liu
- State Key Laboratory of Crop Stress Biology for Arid Areas, Key Laboratory of Crop Pest Integrated Pest Management on the Loess Plateau of Ministry of Agriculture and Rural Affairs, Northwest A&F University, Yangling, Shaanxi, China
| | - Wenhua Hou
- State Key Laboratory of Crop Stress Biology for Arid Areas, Key Laboratory of Crop Pest Integrated Pest Management on the Loess Plateau of Ministry of Agriculture and Rural Affairs, Northwest A&F University, Yangling, Shaanxi, China
| | - Jaime Cesar Piñero
- Stockbridge School of Agriculture, University of Massachusetts, Amherst, Massachusetts, USA
| | - Xiong Peng
- State Key Laboratory of Crop Stress Biology for Arid Areas, Key Laboratory of Crop Pest Integrated Pest Management on the Loess Plateau of Ministry of Agriculture and Rural Affairs, Northwest A&F University, Yangling, Shaanxi, China
| | - Maohua Chen
- State Key Laboratory of Crop Stress Biology for Arid Areas, Key Laboratory of Crop Pest Integrated Pest Management on the Loess Plateau of Ministry of Agriculture and Rural Affairs, Northwest A&F University, Yangling, Shaanxi, China
| |
Collapse
|