High levels of docosahexaenoic acid (22:6n-3)-containing phospholipids in high-frequency contraction muscles of hummingbirds and rattlesnakes

Infante, Juan P.; Kirwan, Ryan C; Brenna, J. Thomas

doi:10.1016/s1096-4959(01)00443-2

Cited by 72 publications

(62 citation statements)

References 40 publications

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“…The high levels of DHA in thrush meat are probably due to the fact that thrush pectoral muscles are high-frequency contraction muscles. A high content of DHA has only been reported in animals with high-frequency contraction muscles: for example, a DHA content of 21% was reported in the total fatty acids portion of hummingbird breast muscle (Infante, Kirwan, & Brenna, 2001). The high-frequency contraction muscles are endowed with a high content of sarcoplasmic reticulum Ca 2þ -ATPase and mitochondrial respiration enzymes with a high concentration of phospholipids with DHA; these phospholipids have specific physiological functions (Infante et al, 2001).…”

Section: Discussionmentioning

confidence: 99%

“…A high content of DHA has only been reported in animals with high-frequency contraction muscles: for example, a DHA content of 21% was reported in the total fatty acids portion of hummingbird breast muscle (Infante, Kirwan, & Brenna, 2001). The high-frequency contraction muscles are endowed with a high content of sarcoplasmic reticulum Ca 2þ -ATPase and mitochondrial respiration enzymes with a high concentration of phospholipids with DHA; these phospholipids have specific physiological functions (Infante et al, 2001). As in our study, Infante et al (2001) have also reported that triglycerides from these muscles also contain a high percent of DHA and these authors suggest that neutral lipids are used as a docosahexanoic reservoir for phospholipids synthesis, and also as a way to store energy.…”

Section: Discussionmentioning

confidence: 99%

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Characterization of meat from two game birds: thrush (Turdus philomelos) and turtle dove (Streptopelia turtur) Caracterización de la carne de dos aves de caza: zorzal (Turdus philomelos) y tórtola (Streptopelia turtur)

Rodríguez-Turienzo

Dı́az

Sanmartín

et al. 2010

CyTA - Journal of Food

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The chemical and fatty acid composition and color of wild thrush (Turdus philomelos) and turtle dove (Streptopelia turtur) meat were investigated. No significant differences in the chemical composition were observed between the meat of thrush and that of turtle dove. However, significant differences (p 5 0.05) in the fatty acid composition of the three fractions (glycerides, phospholipids, and free fatty acids) and in color parameters were observed. The main fatty acid in thrush meat was oleic acid (around 30%), and the high content of docosahexaenoic acid (C-22:6n-3) (more than 10% in the three fractions) was remarkable. There was a high content of polyunsaturated fatty acids (PUFA) (more than 50%) in the turtle dove meat; the main PUFA were linoleic (C-18:2n-6) and arachidonic (C-20:4n-6) acids.Keywords: game; thrush; turtle dove; meat; lipids; fatty acids; color Se ha estudiado la composicio´n quı´mica, de a´cidos grasos y el color de la carne de zorzal (Turdus philomelos) y to´rtola (Streptopelia turtur). No se observaron diferencias significativas en la composicio´n quı´mica entre la carne de ambas especies; sin embargo, sı´se detectaron diferencias significativas (p 5 0,05) en la composicio´n de a´cidos grasos de las tres fracciones lipı´dicas (glice´ridos, fosfolı´pidos y a´cidos grasos libres) y en los para´metros de color. El principal a´cido graso en la carne de zorzal fue el a´cido oleico (alrededor del 30%), siendo remarcable el alto contenido de a´cido docosahexaenoico (C-22:6n-3) (mayor del 10% en las tres fracciones). La carne de to´rtola presento´un alto contenido de a´cidos grasos poliinsaturados (mayor del 50%), siendo los principales a´cidos grasos poliinsaturados el linoleico (C-18:2n-6) y el araquido´nico (C-20:4n-6).

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Characterization of meat from two game birds: thrush (Turdus philomelos) and turtle dove (Streptopelia turtur) Caracterización de la carne de dos aves de caza: zorzal (Turdus philomelos) y tórtola (Streptopelia turtur)

Rodríguez-Turienzo

Dı́az

Sanmartín

et al. 2010

CyTA - Journal of Food

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“…Interestingly, PUFA levels from adult adipose tissue were lower (present study, N3, 9.8±1.3%), suggesting no preferential mobilization of MUFAs and SFAs from the blubber to the muscle but suggesting that PUFAs were preferentially mobilized by the muscle for energy. Several studies suggest that PUFAs may affect the performance of skeletal muscles and locomotion in a variety of vertebrates such as humans, salmon, birds and hares (Helge et al, 2001;Infante et al, 2001;McKenzie et al, 1998;Valencak et al, 2003). It has been reported that long-distance migratory birds (Calidrius pusilla) ingest a diet high in n-3 PUFAs prior to migration, which potentially then act as a molecular signal to prime flight muscles and increase aerobic efficiency (Maillet and Weber, 2006;Price et al, 2008).…”

Section: Lipids Minimize Aerobic Costs For Prolonged Diving In Adultsmentioning

confidence: 99%

Age-related differences in skeletal muscle lipid profiles of Weddell seals: clues to developmental changes

Trumble

Noren

Cornick

et al. 2010

Journal of Experimental Biology

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SUMMARYOur objective was to elucidate age-related changes in lipids associated with skeletal muscle of Weddell seals and to suggest possible physiological implications. Muscle biopsies were collected from pups, juveniles and adults in McMurdo Sound, Antarctica and analyzed for intramuscular lipid (IML) and triacylglyceride (IMTG) amounts, fatty acid groups, as well as individual fatty acid profiles. The results from this study suggest a switch from primarily saturated fatty acids (SFAs) and monounsaturated fatty acids (MUFAs) in the skeletal muscle of young pups to increases in polyunsaturated fatty acids (PUFAs) as the percentage of blubber increases, resulting in possible thermoregulatory benefits. As Weddell pups continue to develop into juveniles, fatty acids associated with the skeletal muscle changes such that MUFA levels are relatively higher, which may be in response to energy depletion associated with their restricted diving ability and rapid growth. As juveniles transform into adults, a reduction in n-3 PUFA levels in the muscle as the percentage of blubber increases may be indicative of a trigger to prepare for deep diving or could be a mechanism for oxygen conservation during long-duration dives. We speculate that the observed change in lipids associated with the skeletal muscle of Weddell seals is related to ontogenetic differences in thermoregulation and locomotion.

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“…However, several lines of evidence show that muscle PL composition and capacity for endurance exercise are related. Membranes of high-performance muscles like hummingbird flight muscle, rattlesnake shaker muscle and hare locomotory muscle, all contain unusually high amounts of n-3 PUFA (Infante et al, 2001;Valencak et al, 2003). In addition, endurance training increases the n-3 PUFA content of muscle PL in rats and humans (Andersson et al, 2000;Helge et al, 2001;Turner et al, 2004).…”

Section: Flight Muscle Membranes Are Modifiedmentioning

confidence: 99%

“…For example, unusually high levels of n-3 PUFA have been found in the membrane PL of highly aerobic muscles such as hummingbird flight muscles (Infante et al, 2001). Moreover, endurance training in rats and humans increases the n-3 PUFA content of their muscle PL (Andersson et al, 2000;Helge et al, 2001;Turner et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

Performance-enhancing role of dietary fatty acids in a long-distance migrant shorebird: the semipalmated sandpiper

Maillet

Weber

2006

Journal of Experimental Biology

114

131

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dietary n-3 PUFA are incorporated in tissue lipids in less than 2 weeks. During the stopover, the double bond index of muscle PL increases by 25% and the fatty acid profiles of both muscle PL and adipose NL converge with that of the diet. However, >50% of dietary n-3 PUFA are converted to other fatty acids before storage, mainly to oleate (18:1), possibly because monounsaturates offer a compromise between high energy density and ease of mobilization. This study shows that long-distance migrant birds can (1) use natural diets rich in specific lipids to prime flight muscles for endurance exercise, and (2) modify dietary fatty acids before storing them as fuel.

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High levels of docosahexaenoic acid (22:6n-3)-containing phospholipids in high-frequency contraction muscles of hummingbirds and rattlesnakes

Cited by 72 publications

References 40 publications

Characterization of meat from two game birds: thrush (Turdus philomelos) and turtle dove (Streptopelia turtur) Caracterización de la carne de dos aves de caza: zorzal (Turdus philomelos) y tórtola (Streptopelia turtur)

Characterization of meat from two game birds: thrush (Turdus philomelos) and turtle dove (Streptopelia turtur) Caracterización de la carne de dos aves de caza: zorzal (Turdus philomelos) y tórtola (Streptopelia turtur)

Age-related differences in skeletal muscle lipid profiles of Weddell seals: clues to developmental changes

Performance-enhancing role of dietary fatty acids in a long-distance migrant shorebird: the semipalmated sandpiper

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