1
|
Blanchard A, Aminot M, Gould N, Léger A, Pichaud N. Flies on the rise: acclimation effect on mitochondrial oxidation capacity at normal and high temperatures in Drosophila melanogaster. J Exp Biol 2024; 227:jeb247706. [PMID: 38841909 DOI: 10.1242/jeb.247706] [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: 03/07/2024] [Accepted: 05/28/2024] [Indexed: 06/07/2024]
Abstract
Increased average temperatures and extreme thermal events (such as heatwaves) brought forth by climate change impose important constraints on aerobic metabolism. Notably, mitochondrial metabolism, which is affected by both long- and short-term temperature changes, has been put forward as an important determinant for thermal tolerance of organisms. This study examined the influence of phenotypic plasticity on metabolic and physiological parameters in Drosophila melanogaster and the link between mitochondrial function and their upper thermal limits. We showed that D. melanogaster acclimated to 15°C have a 0.65°C lower critical thermal maximum (CTmax) compared with those acclimated to 24°C. Drosophila melanogaster acclimated to 15°C exhibited a higher proportion of shorter saturated and monounsaturated fatty acids, concomitant with lower proportions of polyunsaturated fatty acids. No mitochondrial quantitative changes (fractional area and number) were detected between acclimation groups, but changes of mitochondrial oxidation capacities were observed. Specifically, in both 15°C- and 24°C-acclimated flies, complex I-induced respiration was increased when measured between 15 and 24°C, but drastically declined when measured at 40°C. When succinate and glycerol-3-phosphate were added, this decrease was however compensated for in flies acclimated to 24°C, suggesting an important impact of acclimation on mitochondrial function related to thermal tolerance. Our study reveals that the use of oxidative substrates at high temperatures is influenced by acclimation temperature and strongly related to upper thermal tolerance as a difference of 0.65°C in CTmax translates into significant mitochondrial changes.
Collapse
Affiliation(s)
- Arianne Blanchard
- New Brunswick Centre for Precision Medicine, Moncton, NB E1C8X3, Canada
- Department of Chemistry and Biochemistry, Université de Moncton, Moncton, NB E1A 3E9, Canada
| | - Mélanie Aminot
- New Brunswick Centre for Precision Medicine, Moncton, NB E1C8X3, Canada
- Department of Chemistry and Biochemistry, Université de Moncton, Moncton, NB E1A 3E9, Canada
| | - Nathalie Gould
- New Brunswick Centre for Precision Medicine, Moncton, NB E1C8X3, Canada
- Department of Chemistry and Biochemistry, Université de Moncton, Moncton, NB E1A 3E9, Canada
| | - Adèle Léger
- New Brunswick Centre for Precision Medicine, Moncton, NB E1C8X3, Canada
- Department of Chemistry and Biochemistry, Université de Moncton, Moncton, NB E1A 3E9, Canada
| | - Nicolas Pichaud
- New Brunswick Centre for Precision Medicine, Moncton, NB E1C8X3, Canada
- Department of Chemistry and Biochemistry, Université de Moncton, Moncton, NB E1A 3E9, Canada
| |
Collapse
|
2
|
Seltzer R, Domer A, Bouchebti S, Drabkin A, Levin E. The fa(c)ts that matter: Bumble bees differentially allocate and oxidate three common fatty acids in pollen. JOURNAL OF INSECT PHYSIOLOGY 2023; 149:104552. [PMID: 37549842 DOI: 10.1016/j.jinsphys.2023.104552] [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: 03/16/2023] [Revised: 08/04/2023] [Accepted: 08/04/2023] [Indexed: 08/09/2023]
Abstract
Pollen serves as a crucial source of protein and lipids for numerous insects. Despite the importance of pollen lipids for nutrient regulation in bees, the digestibility and absorption of different fatty acids (FAs) by bees remain poorly understood. We used 13C labeled fatty acids (FAs) to investigate the absorption and allocation of three common dietary FAs in pollen by bumble bees. Palmitic acid, the most common saturated FA in pollen, was poorly absorbed, even when supplied as tripalmitate, emulsified, or mixed in vegetable oil. In contrast, the essential linoleic acid was absorbed and allocated at the highest rate among the three FAs tested. Oleic acid, a non-essential monounsaturated FA, was absorbed and oxidized at lower rates than linoleic acid. Notably, a feeding rate experiment revealed that different fatty acids did not affect the consumption rate of pollen. This results suggests that the specific FA's absorption efficiency and allocation differ in bumble bees, impacting their utilization. These findings demonstrate the importance of considering the digestibility and absorption of different FAs. Furthermore, the study highlights the influence of pollen lipid composition on the nutritional content for pollinators and raises questions about the utilization of polyunsaturated FAs in insect metabolism.
Collapse
Affiliation(s)
- Rya Seltzer
- School of Zoology, Faculty of Life Sciences, Tel Aviv University, 6997801 Tel Aviv, Israel
| | - Adi Domer
- School of Zoology, Faculty of Life Sciences, Tel Aviv University, 6997801 Tel Aviv, Israel
| | - Sofia Bouchebti
- School of Zoology, Faculty of Life Sciences, Tel Aviv University, 6997801 Tel Aviv, Israel
| | - Ariel Drabkin
- School of Zoology, Faculty of Life Sciences, Tel Aviv University, 6997801 Tel Aviv, Israel
| | - Eran Levin
- School of Zoology, Faculty of Life Sciences, Tel Aviv University, 6997801 Tel Aviv, Israel.
| |
Collapse
|
3
|
Roux N, Miura S, Dussenne M, Tara Y, Lee SH, de Bernard S, Reynaud M, Salis P, Barua A, Boulahtouf A, Balaguer P, Gauthier K, Lecchini D, Gibert Y, Besseau L, Laudet V. The multi-level regulation of clownfish metamorphosis by thyroid hormones. Cell Rep 2023; 42:112661. [PMID: 37347665 PMCID: PMC10467156 DOI: 10.1016/j.celrep.2023.112661] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 05/27/2023] [Accepted: 06/01/2023] [Indexed: 06/24/2023] Open
Abstract
Most marine organisms have a biphasic life cycle during which pelagic larvae transform into radically different juveniles. In vertebrates, the role of thyroid hormones (THs) in triggering this transition is well known, but how the morphological and physiological changes are integrated in a coherent way with the ecological transition remains poorly explored. To gain insight into this question, we performed an integrated analysis of metamorphosis of a marine teleost, the false clownfish (Amphiprion ocellaris). We show how THs coordinate a change in color vision as well as a major metabolic shift in energy production, highlighting how it orchestrates this transformation. By manipulating the activity of liver X regulator (LXR), a major regulator of metabolism, we also identify a tight link between metabolic changes and metamorphosis progression. Strikingly, we observed that these regulations are at play in the wild, explaining how hormones coordinate energy needs with available resources during the life cycle.
Collapse
Affiliation(s)
- Natacha Roux
- Sorbonne Université, CNRS, Biologie Intégrative des Organismes Marins, Observatoire Océanologique, 66650 Banyuls-sur-Mer, France; Okinawa Institute of Science and Technology, 1919-1 Tancha, Onna son, Okinawa 904-0495, Japan
| | - Saori Miura
- Okinawa Institute of Science and Technology, 1919-1 Tancha, Onna son, Okinawa 904-0495, Japan
| | - Mélanie Dussenne
- Sorbonne Université, CNRS, Biologie Intégrative des Organismes Marins, Observatoire Océanologique, 66650 Banyuls-sur-Mer, France
| | - Yuki Tara
- Okinawa Institute of Science and Technology, 1919-1 Tancha, Onna son, Okinawa 904-0495, Japan
| | - Shu-Hua Lee
- Marine Research Station, Institute of Cellular and Organismic Biology, Academia Sinica, 23-10, Dah-Uen Rd., Jiau Shi, I-Lan 262, Taiwan
| | | | - Mathieu Reynaud
- Okinawa Institute of Science and Technology, 1919-1 Tancha, Onna son, Okinawa 904-0495, Japan
| | - Pauline Salis
- Sorbonne Université, CNRS, Biologie Intégrative des Organismes Marins, Observatoire Océanologique, 66650 Banyuls-sur-Mer, France
| | - Agneesh Barua
- Okinawa Institute of Science and Technology, 1919-1 Tancha, Onna son, Okinawa 904-0495, Japan
| | - Abdelhay Boulahtouf
- Institut de Recherche en Cancérologie de Montpellier (IRCM), INSERM, University of Montpellier, 34090 Montpellier, France
| | - Patrick Balaguer
- Institut de Recherche en Cancérologie de Montpellier (IRCM), INSERM, University of Montpellier, 34090 Montpellier, France
| | - Karine Gauthier
- Institut de Génomique Fonctionnelle de Lyon, CNRS UMR 5242, INRAE USC 1370 École Normale Supérieure de Lyon, Université Claude Bernard Lyon 1, 46 allée d'Italie, 69007 Lyon, France
| | - David Lecchini
- PSL Research University, EPHE-UPVD-CNRS-UAR 3278 CRIOBE BP 1013, 98729 Papetoai, Moorea, French Polynesia; Laboratoire d'Excellence "CORAIL," 66100 Perpignan, France
| | - Yann Gibert
- Department of Cell and Molecular Biology, University of Mississippi Medical Center, 2500 North State Street, Jackson, MS 39216, USA
| | - Laurence Besseau
- Sorbonne Université, CNRS, Biologie Intégrative des Organismes Marins, Observatoire Océanologique, 66650 Banyuls-sur-Mer, France.
| | - Vincent Laudet
- Okinawa Institute of Science and Technology, 1919-1 Tancha, Onna son, Okinawa 904-0495, Japan; Marine Research Station, Institute of Cellular and Organismic Biology, Academia Sinica, 23-10, Dah-Uen Rd., Jiau Shi, I-Lan 262, Taiwan.
| |
Collapse
|
4
|
Fatty Acid Spectra in Mesopelagic Fishes of the Myctophidae and Stomiidae Families Collected in the North East Atlantic. DIVERSITY 2023. [DOI: 10.3390/d15020166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
New data on the fatty acid compositions of the muscle tissues of the two most widespread families of the mesopelagic zone—the Myctophidae (Notoscopelus kroyeri and Symbolophorus veranyi) and Stomiidae (Chauliodus sloani, Stomias boa, Borostomias antarcticus, and Malacosteus niger) families—were obtained from the Irminger Sea (North East Atlantic). The fatty acids (FAs) in the total lipids (TLs), phospholipids (PLs), triacylglycerols (TAGs), and cholesterol esters and waxes were analyzed using gas–liquid chromatography with a mass-selective detector and flame-ionized detector (GC-MS and GC-FID, respectively). Species-specific differences in the FA/alcohol profiles of the studied fishes were revealed. A directed deep-vise trend in the changes in the content and performance of certain FAs for the studied species was found. Along with this, a general character of dominance for monounsaturated fatty acids (MUFAs), which were discussed as food tracers, was revealed. MUFAs in the muscle tissues included dietary markers of zooplankton (copepods)—20:1(n-9) and 22:1(n-11), the content of which varied in association with the species—such that the biomarker Calanus glacialis predominated in muscles of B. antarcticus and C. hyperboreus prevailed in other studied species. Different strategies of compensatory adaptation to depth gradient in lipid metabolism among the studied species were discussed.
Collapse
|
5
|
Lipid Adaptations against Oxidative Challenge in the Healthy Adult Human Brain. Antioxidants (Basel) 2023; 12:antiox12010177. [PMID: 36671039 PMCID: PMC9855103 DOI: 10.3390/antiox12010177] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 01/09/2023] [Accepted: 01/10/2023] [Indexed: 01/15/2023] Open
Abstract
It is assumed that the human brain is especially susceptible to oxidative stress, based on specific traits such as a higher rate of mitochondrial free radical production, a high content in peroxidizable fatty acids, and a low antioxidant defense. However, it is also evident that human neurons, although they are post-mitotic cells, survive throughout an entire lifetime. Therefore, to reduce or avoid the impact of oxidative stress on neuron functionality and survival, they must have evolved several adaptive mechanisms to cope with the deleterious effects of oxidative stress. Several of these antioxidant features are derived from lipid adaptations. At least six lipid adaptations against oxidative challenge in the healthy human brain can be discerned. In this work, we explore the idea that neurons and, by extension, the human brain is endowed with an important arsenal of non-pro-oxidant and antioxidant measures to preserve neuronal function, refuting part of the initial premise.
Collapse
|
6
|
Volov M, Cohen N, Bodner L, Dubiner S, Hefetz A, Bouchebti S, Levin E. The Effect of Climate and Diet on Body Lipid Composition in the Oriental Hornet (Vespa orientalis). Front Ecol Evol 2021. [DOI: 10.3389/fevo.2021.755331] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
Fatty acids (FA) are the primary metabolic fuel for many organisms and the fundamental component of membranes of all living organisms. FAs can be saturated (SFA), monounsaturated (MUFA), or polyunsaturated (PUFA). PUFA are not synthesized by most animals and are considered as essential nutrients. We examined the effect of climate on the saturation level of polar (mostly membranal) and neutral lipids in the body of the Oriental hornet (Vespa orientalis) from two extreme climatic zones: Mediterranean high elevation; and hot arid desert. In contrast to previous reports, the environmental temperature was shown to affect the hornet colonies’ thermal environments. The hornets nonetheless maintained their colony temperature within a narrow range. Analyses of the hornets’ unsaturation levels of polar and non-polar body lipids revealed caste differences: gynes and males contained less unsaturated lipids than workers. However, there were no differences in the respective castes between the two different climate zones tested. Experimentally manipulating the diet of queenless hornet colonies to a high Omega-3 diet (salmon) or a high Omega-6 diet (crickets) had only a minor effect on the worker-born males’ lipid composition. Although salmon-fed males had a higher Omega-3 content than cricket-fed ones, the proportion of these fatty acids was still low (below 1%). Cricket-fed males had significantly higher levels of Omega-6 than salmon-fed males. Our data show that the specific lipid composition of the hornet body is highly regulated and deficient in essential PUFA, even under different climates or high Omega-3 or Omega-6 PUFA diet. PUFA, especially Omega-3, is considered to have a beneficial effect on physiological processes. Our finding that these FA, when common in the diet, are almost absent in the body raises questions about how they affect animals’ physiology.
Collapse
|
7
|
The Impact of Short-Term Shark Liver Oil Supplementation on the Fatty Acid Composition of Erythrocyte Membranes. Nutrients 2021; 13:nu13103329. [PMID: 34684329 PMCID: PMC8540316 DOI: 10.3390/nu13103329] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 09/14/2021] [Accepted: 09/17/2021] [Indexed: 02/06/2023] Open
Abstract
Fatty acid (FA) balance is strictly related to human health. The composition of fatty acids in lipid membranes seems to be influenced by diet. Shark liver oil (SLO) supplementation has been widely used recently in the prevention and treatment of human diseases. We analyzed the impact of short-term SLO supplementation on certain biochemical parameters and erythrocyte FA composition in a group of young healthy women. Our results showed that 6 weeks of SLO supplementation led to a significant decrease in C-reactive protein levels in sera and intracellular cholesterol levels in peripheral blood mononuclear cells. SLO supplementation caused a significant increase in the content of the polyunsaturated omega-3 FAs: docosahexaenoic acid, docosapentaenoic acid and α-linolenic acid. In the group of omega-6 FAs, we observed a significant elevation of arachidonic and dihomo-gamma-linoleic acid content. Due to these alterations, the omega-3 index increased significantly from 3.6% (before) to 4.2% (after supplementation). We also observed the impact of SLO supplementation on the membrane fluidity index. The ratio between saturated and unsaturated FAs decreased significantly from 13.1 to 9.9. In conclusion, our results show that even short-term SLO supplementation can improve human erythrocyte fatty acid composition and other parameters that may have health-promoting consequences.
Collapse
|