Black wildebeest skeletal muscle exhibits high oxidative capacity and a high proportion of type IIx fibres.

Abstract Text

The aim of the study was to investigate the skeletal muscle characteristics of black wildebeest (Connochaetes gnou) in terms of fibre type and metabolism. Samples were obtained post mortem from the vastus lateralis and longissimus lumborum muscles and analysed for myosin heavy chain (MHC) content. Citrate synthase (CS), 3-hydroxyacyl co A dehydrogenase (3HAD), phosphofructokinase (PFK), lactate dehydrogenase (LDH) and creatine kinase (CK) activities were measured spectrophotometrically to represent the major metabolic pathways in these muscles. Both muscles had less than 20% MHC I, whereas MHC IIa and MHC IIx were expressed in excess of 50% in the vastus lateralis and longissimus lumborum muscles, respectively. Overall fibre size was 2675±1034 μm(2), which is small compared with other species. Oxidative capacity (CS and 3HAD) in both muscles was high and did not differ from one another, but the longissimus lumborum had significantly (P<0.05) higher PFK, LDH and CK activities. No relationships were observed between fibre type and the oxidative and oxygen-independent metabolic capacity as measured by specific enzyme activities. This study confirms the presence of both fast-twitch fibres and high oxidative capacity in black wildebeest, indicating an animal that can run very fast but is also fatigue resistant.

Authors :-, , ,


Keywords :-, , ,


Mesh Headings :-


Chemical List :-, ,



2016-09-08 02:01:25

Click download button below to get the free Black wildebeest skeletal muscle exhibits high oxidative capacity and a high proportion of type IIx fibres. link to pdf of abstract on your facebook profile.

Download Server - Asia Download Server - America Download Server - Europe Download Server - Australia
Citation:- Kohn TA, Curry TA, Noakes TA, .Black wildebeest skeletal muscle exhibits high oxidative capacity and a high proportion of type IIx fibres. The Journal of experimental biology 2011-Dec;214()4041-7 DOI:10.1242/jeb.061572

Link to original article


Details of Journal

Journal Title - The Journal of experimental biology

ISSN - 1477-9145

Volume - 214

Issue - 0

Publish date - 2011-Dec

Language - eng

Country - England


SHARE PLEASE -
Read More Similar Articles

The inotropic effects of ammonia on isolated perfused rat hearts and the mechanisms involved.

Zhang Q, Meng Q, .The inotropic effects of ammonia on isolated perfused rat hearts and the mechanisms involved. The Journal of experimental biology 2011-Dec;214()4048-54 DOI:10.1242/jeb.055947.......

Read More

Dombkowski RA, Naylor RA, Shoemaker RA, Smith RA, DeLeon RA, Stoy RA, .Hydrogen sulfide (H₂S) and hypoxia inhibit salmonid gastrointestinal motility: evidence for H₂S as an oxygen sensor. The Jour.......


Divergent transcriptomic responses to repeated and single cold exposures in Drosophila melanogaster.

Zhang J, Marshall J, Westwood J, Clark J, Sinclair J, .Divergent transcriptomic responses to repeated and single cold exposures in Drosophila melanogaster. The Journal of experimental biology 2011-Dec.......

Read More

Energy expenditure of freely swimming adult green turtles (Chelonia mydas) and its link with body acceleration.

Enstipp MR, Ciccione MR, Gineste MR, Milbergue MR, Ballorain MR, Ropert-Coudert MR, .Energy expenditure of freely swimming adult green turtles (Chelonia mydas) and its link with body acceleration. The.......

Read More

Rapid contrast gain reduction following motion adaptation.

Nordström K, Moyer de Miguel K, O'Carroll K, .Rapid contrast gain reduction following motion adaptation. The Journal of experimental biology 2011-Dec;214()4000-9 DOI:10.1242/jeb.057539.......

Read More

Pharmacological characterisation of apical Na+ and Cl- transport mechanisms of the anal papillae in the larval mosquito Aedes aegypti.

Del Duca O, Nasirian O, Galperin O, Donini O, .Pharmacological characterisation of apical Na+ and Cl- transport mechanisms of the anal papillae in the larval mosquito Aedes aegypti. The Journal of exp.......

Read More

Urotensin II and its receptor in the killifish gill: regulators of NaCl extrusion.

Evans DH, Hyndman DH, Cornwell DH, Buchanan DH, .Urotensin II and its receptor in the killifish gill: regulators of NaCl extrusion. The Journal of experimental biology 2011-Dec;214()3985-91 DOI:10.124.......

Read More

IRS and TOR nutrient-signaling pathways act via juvenile hormone to influence honey bee caste fate.

Mutti NS, Dolezal NS, Wolschin NS, Mutti NS, Gill NS, Amdam NS, .IRS and TOR nutrient-signaling pathways act via juvenile hormone to influence honey bee caste fate. The Journal of experimental biology.......

Read More

Locomotor activity during the frenzy swim: analysing early swimming behaviour in hatchling sea turtles.

Pereira CM, Booth CM, Limpus CM, .Locomotor activity during the frenzy swim: analysing early swimming behaviour in hatchling sea turtles. The Journal of experimental biology 2011-Dec;214()3972-6 DOI:1.......

Read More

//google analytics script here