PMID- 7701935
OWN - NLM
STAT- MEDLINE
DCOM- 19950503
LR  - 20190821
IS  - 0001-5180 (Print)
IS  - 0001-5180 (Linking)
VI  - 151
IP  - 2
DP  - 1994
TI  - Fibre type distribution, capillarization and enzymatic profile of locomotor and 
      nonlocomotor muscles of horses and steers.
PG  - 97-106
AB  - Samples were taken at slaughter from heart and both locomotor and nonlocomotor 
      muscles from animals of similar body weight but adapted to different levels of 
      activity: three horses and three steers. All samples were analyzed biochemically 
      to measure the activity of key metabolic enzymes. The skeletal muscles were 
      analyzed histochemically for fibre type composition, fibre area and capillary 
      supply. The general pattern of differences in fibre type composition and 
      metabolic profile between muscle groups was similar in both horses and steers. 
      The hearts of both species had high citrate synthase (CS), 
      3-OH-acylCoA-dehydrogenase (HAD) and hexokinase (HK) and low lactate 
      dehydrogenase (LDH) activities. In both species, deep portions of muscles and 
      muscles localized deeper in the body had a more oxidative metabolic profile than 
      superficial portions and muscles. Taking all muscles into account, it was found 
      that CS and HAD were higher and LDH lower in horse than in steer muscles. Horse 
      muscles contained more type IIA fibres and had a higher capillary supply than 
      steer muscles. There was no difference between the two species regarding mean 
      fibre area. The adaptation of the horse to a higher level of activity in 
      comparison with steers was reflected in a higher oxidative capacity, better 
      vascularization and a larger proportion of type IIA fibres. It was also obvious 
      from these results that the ATPase fibre-typing system does not reflect the 
      metabolic profile of a muscle.
FAU - Karlstrom, K
AU  - Karlstrom K
AD  - Department of Medicine and Surgery, Faculty of Veterinary Medicine, Swedish 
      University of Agricultural Sciences, Uppsala.
FAU - Essen-Gustavsson, B
AU  - Essen-Gustavsson B
FAU - Lindholm, A
AU  - Lindholm A
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - Switzerland
TA  - Acta Anat (Basel)
JT  - Acta anatomica
JID - 0370272
RN  - EC 1.1.1.- (3-Hydroxyacyl CoA Dehydrogenases)
RN  - EC 2.3.3.1 (Citrate (si)-Synthase)
SB  - IM
MH  - 3-Hydroxyacyl CoA Dehydrogenases/metabolism
MH  - Animals
MH  - Capillaries/anatomy & histology
MH  - Cattle/*anatomy & histology
MH  - Citrate (si)-Synthase/metabolism
MH  - Female
MH  - Horses/*anatomy & histology
MH  - Male
MH  - Motor Activity/*physiology
MH  - Muscle Fibers, Skeletal/classification
MH  - Muscles/*blood supply/*enzymology/ultrastructure
EDAT- 1994/01/01 00:00
MHDA- 1994/01/01 00:01
CRDT- 1994/01/01 00:00
PHST- 1994/01/01 00:00 [pubmed]
PHST- 1994/01/01 00:01 [medline]
PHST- 1994/01/01 00:00 [entrez]
AID - 10.1159/000147649 [doi]
PST - ppublish
SO  - Acta Anat (Basel). 1994;151(2):97-106. doi: 10.1159/000147649.