Fibre type specific transformations in the enzyme activity pattern of rat vastus lateralis muscle by prolonged endurance training

1983 ◽  
Vol 399 (3) ◽  
pp. 216-222 ◽  
Author(s):  
H. J. Green ◽  
H. Reichmann ◽  
D. Pette
Keyword(s):  
Enzyme Activity ◽  
Endurance Training ◽  
Activity Pattern ◽  
Fibre Type ◽  
Vastus Lateralis ◽  
Vastus Lateralis Muscle ◽  
Lateralis Muscle ◽  
Enzyme Activity Pattern

The Effect of Aerobic Exercise Training on the Distribution of Succinate Dehydrogenase Activity Throughout Muscle Fibres

1998 ◽  
Vol 23 (1) ◽  
pp. 74-86 ◽  
Author(s):  
Philip D. Chilibeck ◽  
Gordon J. Bell ◽  
Teresa Socha ◽  
Tom Martin
Keyword(s):  
Endurance Training ◽  
Succinate Dehydrogenase ◽  
Vastus Lateralis ◽  
Aerobic Exercise Training ◽  
Control Group ◽  
Muscle Fibres ◽  
Vastus Lateralis Muscle ◽  
Type I ◽  
Lateralis Muscle ◽  
Subsarcolemmal Mitochondria

We evaluated the effect of endurance training (cycling 3 times per week for 12 weeks) on succinate dehydrogenase (SDH) activity in the subsarcolemmal (SS) and intermyofibrillar (IMF) regions of vastus lateralis muscle fibres in 7 individuals (4 females and 3 males). SDH activity of the SS region increased 9.4% and 12.8% in type I and II fibres, respectively (p < .05). SDH activity of the IMF region increased 4.7% and 6.7% in type I and II fibres, respectively (p < .05). This was less than the increase in the SS region (p < .O5). No significant changes were observed in a control group (4 females and 3 males). These data suggest that mitochondria in the SS and IMF regions of human vastus lateralis muscle fibres are sensitive to endurance training. The greater response in the SS region suggests that the metabolic requirements of SS mitochondria were stressed to a greater extent than IMF mitochondria with endurance training. Key words: subsarcolemmal mitochondria, intermyofibrillar mitochondria

Endurance training-induced changes in alkali light chain patterns in type IIB fibers of the rat

2003 ◽  
Vol 94 (3) ◽  
pp. 923-929 ◽  
Author(s):  
Masanobu Wada ◽  
Shuichiro Inashima ◽  
Takashi Yamada ◽  
Satoshi Matsunaga
Keyword(s):  
Endurance Training ◽  
Light Chain ◽  
Myosin Light Chain ◽  
Fiber Type ◽  
Vastus Lateralis ◽  
Vastus Lateralis Muscle ◽  
Lateralis Muscle ◽  
Induced Changes ◽  
Whole Muscle ◽  
Dimensional Electrophoresis

The effects of endurance training on the expression of myosin were electrophoretically analyzed in the deep portion of vastus lateralis muscle from the rat. A 10-wk running program led to increases ( P < 0.01) in myosin heavy chain (MHC) 2a and 2d with a decrease ( P < 0.01) in MHC2b. Training also evoked a rearrangement of the isomyosin pattern with decreases in fast isomyosin (FM) 1 ( P < 0.01) and FM2 ( P < 0.05) and a rise in intermediate isomyosin ( P < 0.01). These changes were accompanied by a 61% decrease ( P < 0.01) in myosin light chain (MLC) 3F (11.8 ± 2.7 vs. 4.6 ± 4.2%). Two-dimensional electrophoresis made it possible to separate the triplet of isomyosins (FMb) consisting of MHC2b. Training elicited a 26% decrease ( P < 0.05) in the FM1b fraction within FMb, i.e., FM1b/(FM1b + FM2b + FM3b) (24.2 ± 5.5 vs. 18.0 ± 4.3%). These changes resulted in a 10% decrease ( P < 0.05) in the MLC3Ffraction, i.e., MLC3F/(MLC1F + MLC3F), in FMb (44.9 ± 4.5 vs. 40.3 ± 3.2%). These results suggest that endurance training may exert the depressive effect on the contractile velocity of type IIB fibers and that a training-induced decrease in the contractile velocity of whole muscle may be caused by alterations in fast alkali MLC complements within a given fiber type as well as by transitions in MHC-based fiber populations.

Regulation of lipoprotein lipase in adipose and muscle tissues during fasting

1991 ◽  
Vol 260 (5) ◽  
pp. R953-R959 ◽  
Author(s):  
M. J. Ladu ◽  
H. Kapsas ◽  
W. K. Palmer
Keyword(s):  
Enzyme Activity ◽  
Adipose Tissue ◽  
Lipoprotein Lipase ◽  
Vastus Lateralis ◽  
Vastus Lateralis Muscle ◽  
Mrna Concentration ◽  
Muscle Tissues ◽  
Lateralis Muscle ◽  
Muscle Changes ◽  
Fast Twitch

The purpose of this work was to determine the relationship between lipoprotein lipase (LPL) activity and LPL mRNA in muscle and adipose tissue in fed and fasted rats. In control animals, the correlation between enzyme activity and LPL mRNA for adipose tissue, heart, soleus, fast red vastus lateralis, and fast white vastus lateralis muscle was r = +0.97. Twenty-four hours of fasting increased LPL activity 38% in heart, reduced it 59% in adipose tissue, and had no effect on activity in the three skeletal muscles analyzed. At the same time, relative LPL mRNA concentrations were reduced 25% in adipose tissue and elevated in heart, soleus, red vastus, and white vastus muscles when compared with control concentrations. Prolonging the fast to 6 days was accompanied by a 64% reduction in adipose tissue LPL activity and an increase in the activities of slow-twitch soleus (83%) and fast-twitch red vastus lateralis muscles (193%), with no enzyme activity change in heart or white vastus lateralis muscle compared with values obtained from control fed animals. LPL mRNA concentration was reduced 66% in adipose tissue, increased more than twofold in heart, soleus, and white vastus muscle, and increased threefold in red vastus muscle. Changes in relative LPL mRNA concentration in adipose tissue induced by fasting could, in part, be accounted for by the increases seen in total RNA concentration. The relationships between enzyme activity and LPL mRNA in muscle and adipose tissue were r = 0.97 and 0.77 for 1-day and 6-day fasted animals, respectively.(ABSTRACT TRUNCATED AT 250 WORDS)

scholarly journals Enhancement of microvessel tortuosity in the vastus lateralis muscle of old men in response to endurance training

2004 ◽  
Vol 554 (2) ◽  
pp. 559-569 ◽  
Author(s):  
N. Charifi ◽  
F. Kadi ◽  
L. Féasson ◽  
F. Costes ◽  
A. Geyssant ◽  
...  
Keyword(s):  
Endurance Training ◽  
Vastus Lateralis ◽  
Vastus Lateralis Muscle ◽  
Lateralis Muscle ◽  
Old Men

Modulation of lipoprotein lipase activity in the rat by the β2-adrenergic agonist clenbuterol

1992 ◽  
Vol 70 (12) ◽  
pp. 1555-1562 ◽  
Author(s):  
Rekia Belahsen ◽  
Yves Deshaies
Keyword(s):  
Enzyme Activity ◽  
Lipoprotein Lipase ◽  
Lipase Activity ◽  
Vastus Lateralis ◽  
Vastus Lateralis Muscle ◽  
Lipoprotein Lipase Activity ◽  
Serum Triglycerides ◽  
Postprandial State ◽  
Brown Adipose ◽  
Lateralis Muscle

This study evaluated the effects of β2-adrenoceptor stimulation on some determinants of triglyceride metabolism. Male Sprague–Dawley rats were injected twice daily with clenbuterol (30 μg∙kg−1) for 7 days, or with an equivalent volume of vehicle. Serum triglycerides, hepatic triglyceride secretion rate, and lipoprotein lipase activity in white and brown adipose tissues as well as in red vastus lateralis muscle and heart were evaluated in the fasting state and following a fat-free, high-sucrose meal, 3 h after the last agonist injection. In rats killed in the fasting and postprandial states, clenbuterol reduced the mass of white adipose tissue (−25 and −12%, respectively; p < 0.02), whereas it increased the mass of vastus lateralis muscle (+11 and +7%; p < 0.002) and heart (+13 and +10%; p < 0.0001). In vehicle-injected animals, the fasting state was associated with lower lipoprotein lipase activity in white and brown adipose tissues, and higher enzyme activity in vastus lateralis and heart, compared with the postprandial state. Postprandially, treatment with clenbuterol reduced lipoprotein lipase activity in white adipose (−24%), whereas it increased enzyme activity in brown adipose (+107%) as well as in vastus lateralis (+35%). In fasted animals, no significant variation of enzyme activity in these tissues was observed following clenbuterol treatment, whereas in the heart, a decrease of lipoprotein lipase activity was observed (−22%). Clenbuterol lowered serum triglycerides significantly (−23%), but not their rate of secretion, whereas the agonist decreased the insulin to glucagon ratio only in the postprandial state. These results suggest that modulation of triglyceride-rich lipoprotein metabolism, particularly tissue-specific alterations in lipoprotein lipase activity, may be one of the pathways through which clenbuterol affects partitioning of lipid substrates.Key words: triglyceride, lipoprotein lipase, tissue specificity, meal intake, β2 agonist.

Ayurvedic management of Myositis Ossificans of Vastus Lateralis Muscle (Urusthamba) - A Case Study

2017 ◽  
Vol 2 (1) ◽  
Author(s):  
Vishnu Mohan ◽  
Gopikrishna BJ ◽  
Avnish Pathak ◽  
Mahesh Kumar ES ◽  
Duradundi G
Keyword(s):  
Heterotopic Ossification ◽  
Myositis Ossificans ◽  
Vastus Lateralis ◽  
Treatment Protocol ◽  
Vastus Lateralis Muscle ◽  
Satisfactory Treatment ◽  
Lateralis Muscle ◽  
Ayurvedic Treatment

Myositis ossificansis characterized by heterotopic ossification (calcification) of muscle of various etiologies. It is most commonly affected in the quadriceps of the thighs. There are many tools available for diagnosis of Myositis ossificans, but lack of satisfactory treatment. So the development of a treatment protocol for Myositis ossificans is the need of today`s era. In Ayurveda, the same can be understood as Urusthamba. The present paper discusses a case of Myositis ossificans of right vastus lateralis muscle and its Ayurvedic treatment.

Vastus lateralis muscle volume prediction in early-adolescent boys

2021 ◽  
pp. 110735
Author(s):  
Theresa Domroes ◽  
Gunnar Laube ◽  
Sebastian Bohm ◽  
Adamantios Arampatzis ◽  
Falk Mersmann
Keyword(s):  
Vastus Lateralis ◽  
Muscle Volume ◽  
Early Adolescent ◽  
Vastus Lateralis Muscle ◽  
Adolescent Boys ◽  
Lateralis Muscle

Repair of Recurrent Cleft Palate with Free Vastus Lateralis Muscle Flap

2012 ◽  
Vol 49 (2) ◽  
pp. 245-248 ◽  
Author(s):  
Jose G. Christiano ◽  
Amir H. Dorafshar ◽  
Eduardo D. Rodriguez ◽  
Richard J. Redett
Keyword(s):  
Cleft Palate ◽  
Cleft Lip ◽  
Cleft Lip And Palate ◽  
Vastus Lateralis ◽  
Muscle Flap ◽  
Free Flaps ◽  
Vastus Lateralis Muscle ◽  
Oronasal Fistula ◽  
Lateralis Muscle ◽  
Palate Repair

A 6-year-old girl presented with a large recalcitrant oronasal fistula after bilateral cleft lip and palate repair and numerous secondary attempts at fistula closure. Incomplete palmar arches precluded a free radial forearm flap. A free vastus lateralis muscle flap was successfully transferred. No fistula recurrence was observed at 18 months. There was no perceived thigh weakness. The surgical scar healed inconspicuously. Free flaps should no longer be considered the last resort for treatment of recalcitrant fistulas after cleft palate repair. A free vastus lateralis muscle flap is an excellent alternative, and possibly a superior option, to other previously described free flaps.

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