scholarly journals Morphology of long-term denervated rat soleus muscle and the effect of chronic electrical stimulation.

1991 ◽  
Vol 441 (1) ◽  
pp. 233-241 ◽  
Author(s):  
H Schmalbruch ◽  
W S al-Amood ◽  
D M Lewis
Keyword(s):  
Electrical Stimulation ◽  
Soleus Muscle ◽  
Rat Soleus Muscle ◽  
Chronic Electrical Stimulation

Changes in rat soleus muscle phenotype consecutive to a growth in hypergravity followed by normogravity

2005 ◽  
Vol 289 (1) ◽  
pp. R217-R224 ◽  
Author(s):  
F. Picquet ◽  
V. Bouet ◽  
L. Cochon ◽  
M. Lacour ◽  
M. Falempin
Keyword(s):  
Muscle Contraction ◽  
Soleus Muscle ◽  
Contraction Time ◽  
Critical Periods ◽  
Postnatal Maturation ◽  
Slow Myosin ◽  
Fast Myosin ◽  
Rat Soleus Muscle ◽  
Whole Muscle

It has been demonstrated that a long-term stay in hypergravity (HG: 2G) modified the phenotype and the contractile properties of rat soleus muscle. The ability of this muscle to contract was drastically reduced, which is a sign of anticipated aging. Consequently, our aim was to determine whether rats conceived, born, and reared in hypergravity showed adaptative capacities in normogravity (NG: 1G). This study was performed on rats divided into two series: the first was reared in HG until 100 days and was submitted to normogravity until 115 to 220 postnatal days (HG-NG rats); the second was made up of age paired groups reared in normogravity (NG rats). The contractile, morphological, and phenotypical properties of soleus muscle were studied. Our results showed that the NG rats were characterized by coexpressions of slow and fast myosin, respectively, 76.5 and 23.5% at 115 days. During their postnatal maturation, the fast isoform was gradually replaced by slow myosin. At 220 days, the relative proportions were respectively 91.05% and 8.95%. From 115 to 220 days, the HG-NG rats expressed 100% of slow myosin isoform and they presented a slower contractile behavior compared with their age-matched groups; at 115 days, the whole muscle contraction time was increased by 35%, and by 15%, at 220 days. Our study underlined the importance of gravity in the muscular development and suggested the existence of critical periods in muscle phenotype installation.

scholarly journals Long term culture of rat soleus muscle in vitro

FEBS Letters ◽  
1990 ◽  
Vol 273 (1-2) ◽  
pp. 91-94 ◽  
Author(s):  
Pamela B. Stace ◽  
David R. Marchington ◽  
Alan L. Kerbey ◽  
Philip J. Randle
Keyword(s):  
Soleus Muscle ◽  
Long Term Culture ◽  
Rat Soleus Muscle

scholarly journals Postfatigue potentiation of the paralyzed soleus muscle: evidence for adaptation with long-term electrical stimulation training

2006 ◽  
Vol 101 (2) ◽  
pp. 556-565 ◽  
Author(s):  
Richard K. Shields ◽  
Shauna Dudley-Javoroski ◽  
Andrew E. Littmann
Keyword(s):  
Electrical Stimulation ◽  
Soleus Muscle ◽  
Neuromuscular Electrical Stimulation ◽  
Low Frequency ◽  
Home Based ◽  
Early Implementation ◽  
Cord Injury ◽  
Low Frequency Fatigue ◽  
Output Behavior

Understanding the torque output behavior of paralyzed muscle has important implications for the use of functional neuromuscular electrical stimulation systems. Postfatigue potentiation is an augmentation of peak muscle torque during repetitive activation after a fatigue protocol. The purposes of this study were 1) to quantify postfatigue potentiation in the acutely and chronically paralyzed soleus and 2) to determine the effect of long-term soleus electrical stimulation training on the potentiation characteristics of recently paralyzed soleus muscle. Five subjects with chronic paralysis (>2 yr) demonstrated significant postfatigue potentiation during a repetitive soleus activation protocol that induced low-frequency fatigue. Ten subjects with acute paralysis (<6 mo) demonstrated no torque potentiation in response to repetitive stimulation. Seven of these acute subjects completed 2 yr of home-based isometric soleus electrical stimulation training of one limb (compliance = 83%; 8,300 contractions/wk). With the early implementation of electrically stimulated training, potentiation characteristics of trained soleus muscles were preserved as in the acute postinjury state. In contrast, untrained limbs showed marked postfatigue potentiation at 2 yr after spinal cord injury (SCI). A single acute SCI subject who was followed longitudinally developed potentiation characteristics very similar to the untrained limbs of the training subjects. The results of the present investigation support that postfatigue potentiation is a characteristic of fast-fatigable muscle and can be prevented by timely neuromuscular electrical stimulation training. Potentiation is an important consideration in the design of functional electrical stimulation control systems for people with SCI.

scholarly journals Comparison of rectangular and sine waveforms on electrical stimulation to atrophy of rat soleus muscle

2013 ◽  
Vol 27 (S1) ◽  
Author(s):  
Minoru Tanaka ◽  
Masayuki Tanaka ◽  
Miho Kanazashi ◽  
Hiroyo Kondo ◽  
Shinichiro Murakami ◽  
...  
Keyword(s):  
Electrical Stimulation ◽  
Soleus Muscle ◽  
Rat Soleus Muscle

Chronic stimulation of the Kölliker-Fuse nucleus region for relief of intractable pain in humans

1992 ◽  
Vol 76 (6) ◽  
pp. 979-985 ◽  
Author(s):  
Ronald F. Young ◽  
Volker Tronnier ◽  
Patricia C. Rinaldi
Keyword(s):  
Electrical Stimulation ◽  
Pain Relief ◽  
Gray Matter ◽  
Intractable Pain ◽  
Thalamic Nuclei ◽  
Content Type ◽  
Surgical Measures ◽  
Central Origin ◽  
Chronic Electrical Stimulation

✓ Chronic electrical stimulation in the periventricular or periaqueductal gray matter regions and the thalamic somatosensory relay nuclei (ventralis posteromedialis and ventralis posterolateralis) provides long-term pain relief in about 50% of patients with intractable pain refractory to other conservative and/or surgical measures. To enhance the success of electrical stimulation in relief of pain, alternative brain and brain-stem targets have been sought. A series of laboratory studies indicated that the Kölliker-Fuse nucleus and the parabrachial region may provide appropriate alternatives to the “classic” targets. This report describes six patients with intractable chronic pain of nociceptive or central origin, in whom an electrode was stereotactically implanted in the region of the Kölliker-Fuse nucleus. Kölliker-Fuse nucleus stimulation alone or in combination with stimulation in the periaqueductal/periventricular gray matter region or the somatosensory thalamic nuclei provided excellent pain relief in three of the six patients.

scholarly journals Degradation of Temporal Resolution in the Auditory Midbrain After Prolonged Deafness Is Reversed by Electrical Stimulation of the Cochlea

2005 ◽  
Vol 93 (6) ◽  
pp. 3339-3355 ◽  
Author(s):  
Maike Vollmer ◽  
Patricia A. Leake ◽  
Ralph E. Beitel ◽  
Stephen J. Rebscher ◽  
Russell L. Snyder
Keyword(s):  
Electrical Stimulation ◽  
Auditory System ◽  
Temporal Resolution ◽  
Central Nucleus ◽  
Central Auditory System ◽  
Auditory Midbrain ◽  
Chronic Stimulation ◽  
Spiral Ganglion Cell ◽  
Chronic Electrical Stimulation

In an animal model of prelingual deafness, we examined the anatomical and physiological effects of prolonged deafness and chronic electrical stimulation on temporal resolution in the adult central auditory system. Maximum following frequencies ( Fmax) and first spike latencies of single neurons responding to electrical pulse trains were evaluated in the inferior colliculus of two groups of neonatally deafened cats after prolonged periods of deafness (>2.5 yr): the first group was implanted with an intracochlear electrode and studied acutely (long-deafened unstimulated, LDU); the second group (LDS) received a chronic implant and several weeks of electrical stimulation (pulse rates ≥300 pps). Acutely deafened and implanted adult cats served as controls. Spiral ganglion cell density in all long-deafened animals was markedly reduced (mean <5.8% of normal). Both long-term deafness and chronic electrical stimulation altered temporal resolution of neurons in the central nucleus (ICC) but not in the external nucleus. Specifically, LDU animals exhibited significantly poorer temporal resolution of ICC neurons (lower Fmax, longer response latencies) as compared with control animals. In contrast, chronic stimulation in LDS animals led to a significant increase in temporal resolution. Changes in temporal resolution after long-term deafness and chronic stimulation occurred broadly across the entire ICC and were not correlated with its tonotopic gradient. These results indicate that chronic electrical stimulation can reverse the degradation in temporal resolution in the auditory midbrain after long-term deafness and suggest the importance of factors other than peripheral pathology on plastic changes in the temporal processing capabilities of the central auditory system.

Effects of chronic electrical stimulation on long-term denervated muscles of the rabbit hind limb

2007 ◽  
Vol 28 (4-5) ◽  
pp. 203-217 ◽  
Author(s):  
Zoe Ashley ◽  
Stanley Salmons ◽  
Simona Boncompagni ◽  
Feliciano Protasi ◽  
Michael Russold ◽  
...  
Keyword(s):  
Electrical Stimulation ◽  
Hind Limb ◽  
Chronic Electrical Stimulation ◽  
Denervated Muscles

scholarly journals High-frequency electrical stimulation (HFES) Data Lean and Obese Zucker Rat Soleus Muscle: Regulation of p70S6kinase Associated Proteins

Data in Brief ◽  
2018 ◽  
Vol 16 ◽  
pp. 250-260 ◽  
Author(s):  
Kevin M. Rice ◽  
Anjaiah Katta ◽  
Nandini D.P.K. Manne ◽  
Ravikumar Arvapalli ◽  
Gautam K. Ginjupalli ◽  
...  
Keyword(s):  
Electrical Stimulation ◽  
Soleus Muscle ◽  
High Frequency ◽  
Zucker Rat ◽  
Muscle Regulation ◽  
Obese Zucker Rat ◽  
Associated Proteins ◽  
Rat Soleus Muscle

Effect of a single session of electrical stimulation on activity and expression of citrate synthase and antioxidant enzymes in rat soleus muscle

2007 ◽  
Vol 102 (1) ◽  
pp. 119-126 ◽  
Author(s):  
Aurélio da Silva Pimenta ◽  
Rafael Herling Lambertucci ◽  
Renata Gorjão ◽  
Leonardo dos Reis Silveira ◽  
Rui Curi
Keyword(s):  
Electrical Stimulation ◽  
Antioxidant Enzymes ◽  
Soleus Muscle ◽  
Citrate Synthase ◽  
Single Session ◽  
Rat Soleus Muscle
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