• Title, Summary, Keyword: electrostimulation

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Effects of Isometric Contraction Training by Electrostimulation on Type I and II Hindlimb Muscles in Cerebral Ischemia Model Rats (전기자극을 이용한 등척성 수축훈련이 뇌허혈 유발 쥐의 환측 Type I, II 근육에 미치는 영향)

  • Lee, Yoon-Kyong;Choe, Myoung-Ae;An, Gyeong-Ju
    • Journal of Korean Academy of Nursing
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    • v.36 no.7
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    • pp.1232-1241
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    • 2006
  • Purpose: The purpose of this study was to examine the effects of cerebral ischemia on Type I(soleus) and Type II(plantaris, gastrocnemius) muscles, and to determine the effects of isometric contraction training by electro- stimulation on Type I and II muscles in cerebral ischemia model rats. Method: Twenty-five male Sprague-Dawley rats were randomly divided into four groups: ST(stroke), STES(stroke+electrostimulation), SH(sham) and SHES (sham+electrostimulation). The ST and STES groups received a transient right middle cerebral artery occlusion operation. The SH and SHES groups received a sham operation. The STES and SHES groups had daily isometric contraction training by electrostimulation(100Hz, 45mA, 7.5V) on hindlimb muscles for 7days. Result: Plantaris and gastrocenmius muscle weight, myofibrillar protein contents of soleus and gastrocnemius, and the muscle fiber cross-sectional area of gastrocnemius in the ST group significantly decreased compared with the SH group. Soleus, plantaris, gastrocnemius muscle weight, myofibrillar protein contents of soleus and gastrocnemius, and the Type I muscle fiber cross-sectional area of soleus and the Type II muscle fiber cross-sectional area of gastrocnemius in the STES group significantly increased compared with the 57 group. Conclusion: Hindlimb muscle atrophy occurs after acute stroke and isometric contraction training by electrostimulation during early stages of a stroke attenuates muscle atrophy of Type I and Type II muscles.

Effects of Electrostimulation on In Vitro Development Ability of Single 4-cell Blastomeres and Oocyte Activation in Porcine (돼지에 있어서 4-세포기 분할구의 체외발생능과 난모세포의 활성화에 미치는 전기자극의 효과)

  • ;V.G. Pursel
    • Korean Journal of Animal Reproduction
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    • v.20 no.3
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    • pp.239-250
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    • 1996
  • The objective of the present experiments were to determine whether micromanipulative and electro-stimulation conditions for blastomere survival overlapped those for oocyte activation in porcine. Eggs selected for in vitro development potential of blastomeres isolated from 4-cell embryos and oocyte activation by electrostimulation were equilibrated for 5~10 min, in 0.3M sucrose solution containing 7.5$\mu\textrm{g}$/ml cytochalasin B, and then electrostimulated for 30$\mu$sec using one pulse of 100, 120, 150 or 180 volts DC with electrodes 0.2mm apart. Single blastomeres were inserted into empty zona pellucida prior to electrostimulaticn. Then they were cultured in 20${mu}ell$ drops of fresh BECM to observe their developmental ability in vitro in a humidified incubat or at 38.5$^{\circ}C$. The results obtained from these experiments are as follows : 1. When one pulse of 100, 120, 150 or 180 volts DC for 30$\mu$sec were applied to porcine oocytes having the slit formed on zona pellucida for activation, activation rates were 65.1, 66.7, 70.7 and 91.7%, respectively. Higher activation rate was observed in 180V. 2. Infact oocytes incubated for 30 min, in 0.3M sucrose solution after electrostimulation were significantally different from control group with increasing of voltages(p<0.05). When voltages used for electrostimulation were increased, activation rates of oocytes were improved in all treatment groups. 3. When zona punctured-oocytes were only electrostimulated, or incubated in 0.3M sucrose solution for 30 min. after electrostimulation at 180 volt DC, activation rates were 90.5 and 95.5%, respectively. And activation rates of zona punctured-oocytes were significantly different from the groups for which zona pellucida was not punctured(P<0.05). 4. When single blastomeres form 4-cell transferred into empty zona pellucida were incubated for 0, 15 and 30 min. in 0.3M sucrose solution after electrostimulation using one pulse of 180 volt DC for 30 $\mu$sec, developmental rates of electrostimulated-single blastomeres to blastocyst were 72.5, 59.0 and 51.2%, respectively, and the ratio of control group developed to blastocyst were 80.0%. 5. The average cell number in electrostimulated-blastomeres developed to blastocyst were 7.9~10.8, and reduced than the cell number in diploid control ; Also cell number decreased with increasing of voltages. The results of these experiments indicate that the optimal condition for achieving in vitro developmental ability of single 4-cell blastomeres and oocyte activatin is 1 pulse, duration 30 $\mu$sec. in 180 volt, and incubation of blastomeres and oocytes in 0.3M sucrose solution after electrostimulation was not significantally different from another treatment groups. The results also show that this condition is suitable for nuclear transplantation using porcine eggs.

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Effect of Microcurrent Electrostimulation on the Burn of Rats (미세전류 전기자극이 흰쥐의 화상에 미치는 영향)

  • Kim, Se-Hoon;Kim, Jung-Woo;Park, Jang-Sung
    • Journal of the Korean Academy of Clinical Electrophysiology
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    • v.6 no.1
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    • pp.81-89
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    • 2008
  • Purpose: This study aims to examine effect of microcurrent electrostimulation on burn healing by electric intensity and of which the electric intensity on the acute burn being cured with microcurrent electrostimulation therapy. Methods: 28 Sprague Dawley Rats is classified into a control group of 8 rats, an experimental group I of 10 rats and an experimental group II of 10 rats. The control group is not cured, the experimental group I is exposed to 10 Hz, and $100{\mu}A$ with microcurrent electrostimulation, and the experimental group II is exposed to 10 Hz, $300{\mu}A$ for 15 minutes a day. The next day, 2th, 4th, and 6th day after rats is burned. Result: There are not significant differences of length change of the burn cure between the control group, the experimental group I, and the experimental group II by a period. However, systematically hair follicle cell on the 2th day and epidermal cell on the 6th day turn up in the experimental group I, and the experimental group II. Inquiry: Nancy(1994) did not obtain the desired result when the skin of a pig is exposed to 0.1 Hz, and $100{\mu}A$ for wound healing. In the result of the study, when burn length is measured on the 2th, 4th, and 6th to see the length change of acute burn, there is not significant differences among 3 groups. Conclusion: Statistically, there is not significant differences of the length change between 3 groups. However, systematically the burn is cured faster in the experimental group I, and the experimental group II than in the contrast group.

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The Change of Spinal Neuron Excitability by Cranial Electrostimulation(CES) in Rats (백서에서 두개전기자극에 의한 척수신경원 흥분성의 변화)

  • Jung, Dae-In;Lee, Jeong-Woo;Kim, Tae-Youl;Kim, Young-Il
    • Journal of the Korean Academy of Clinical Electrophysiology
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    • v.2 no.3
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    • pp.37-49
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    • 2004
  • The purpose of this study was to determine the effect of spinal motor neuron excitability by cranial electrostimulation(CES). The fifteen Sparague-Dawley adult male rats were assigned to the three groups; GroupI(control), GroupII(low rate CES), GroupIII(high rate CES). Spinal motor neuron excitability was measured to use a computerized H reflex. The results of this study was as follows; M latency, M amplitude and H latency were no significant difference in all groups on repeated measured ANOVA(p>.05) but low rate CES and high rate CES groups were lower than ether group in comparative measurement of H amplitude and Hmax/Mmax ratio(p<.05). These results lead to the conclusion that spinal neuron excitability was influenced by CES. These results suggest that CES had the capability to lower spinal motor neuron excitability used synaptic blockade in spinal segment.

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Rehabilitative Effect of Intramuscular Electrostimulation after Reconstruction of Medial Patellar Luxation in Small Sized Dog (소형견의 내측 슬개골 탈구 정복술 후 근육 내 전기자극의 재활효과)

  • Lee, Shinho;Lee, Joo-Myoung;Park, Hyunjung;Won, Sangcheol;Cheong, Jongtae
    • Journal of Veterinary Clinics
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    • v.32 no.1
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    • pp.16-21
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    • 2015
  • Medial patellar luxation (MPL) of dog is one of the most common joint diseases. This study performed to know rehabilitative effect after reconstruction as application with intramuscular electrostimulation (IMES) on the cranial part of sartorius muscle. In this study, the 12 dogs with operated medial luxation divided into electrostimulation group (n = 8) and no electrostimulation group (n = 4) measured affected sided range of motion, muscle mass, lameness score and weight bearing for hospitalization 2 weeks. IMES group showed significant results after operation on 5th day (p < 0.01). Except lameness score, IMES group showed significant results on 10th day (p < 0.05). As results, in small sized dog after reconstruction of MPL, IMES on the cranial part of sartorius muscle considered a great help in the initial rehabilitation.

Production of Clone Animals by Nuclear Transplantation I. Effects of Electrostimulation on Membrane Fusion of Embryos and Activation of Oocytes in Mouse (핵치환에 의한 Clone Animal의 생산에 관한 연구 I. 생쥐 수정란의 세포막 융합과 난모세포의 활성화에 미치는 전기자극의 효과)

  • 이상진;구덕본;이상민;박흠대;정순영;정길생
    • Korean Journal of Animal Reproduction
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    • v.18 no.3
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    • pp.217-228
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    • 1994
  • These experiments were carried out to establish the optimal condition of electrostimulatin inducing cell fusion and oocyte activation for nuclear transplantation in mouse embryos. Eggs selected for cell fusion or activation by electrostimulation were equilibrated for 5~10 min. in 0.3M sucrose solution and electrostimulated for 60$\mu$sec using 1 pulse of 60, 70, 80, 90 or 100 volts DC with electrodes 0.2 mm apart. Then they were cultured in 20${mu}ell$ dropsof Tyrode's solution. The results of these experiments are as follows : 1. When one pulse of 60, 70, 80, 90 or 100 volts DC for 60$\mu$sec were applied to 2-cell embryos for fusion of blastomeres, fusion rates were 50.0, 81.7, 91.7, 100 and 100%, respectively ; and developmental rates of fused embryos to blastocyst were 76.7 to 81.5%. Higher fusion rates were observed in 90V and 100V. 2. The average cell number in fused embryos developed to blastocyst was about half of the cell number in diploid controls; and the cell number decreased with increasing of voltages. 3. When pulse numbers were increased, fusion rates improved, but developmental rates were not signficiantly different from the group for which the number of pulse was not increased. And the cell number of blastocyst decreased even more. 4. Oocytes aged for 6hrs after ovulation were electrostimulated for oocyte activation by the same method used for cell fusion. Rates of oocyte activated by electrostimulation were 45.3 to 60.4%, and fragmentation rates were 7.5~15.1%. The lysis rates were 17.0~34.0%. The results of these experiments indicate that the optimal condition for achieving cell fusion and activation is 1 pulse, duration 60$\mu$sec in 90 Volt. The results also show that this condition is suitable for nuclear transplantation using mouse eggs.

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Effect of Korean Red Ginseng on Rabbit and Rat Corpus Cavernosal Smooth (고려인삼 복용이 토끼 및 횐쥐의 음경해면체 평활근에 미치는 효과)

  • 최영득;마상열
    • Journal of Ginseng Research
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    • v.21 no.2
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    • pp.98-103
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    • 1997
  • On the precontracted rabbit cavernosal muscle strips with phenylephrine ($5\ast10^{-6}$M), Increasing concentrations of acetylcholine (10-7, 10-6, 10-5, 10-4M) showed relaxation effect dose-dependently in control group ($10^{-7}$M : 15.32%, $10^{-6}$M : 35.44%, 10-5M : 59.45%, 10-4M : 76.54%). After 3 months administering Korean red ginseng, the relaxation action of acetylcholine was significantly increased ($10^{-7}$M : 34.18%, $10^{-6}$M : 56.35%, $10^{-5}$M : 75.33%, $10^{-4}$M : 89.86%). Relaxation effect of Korean red ginseng was significantly increased after 3 months administering Korean red ginseng. Intracavernous pressure response to electrostimulation wan 107.52 cm$H_2O$ in control group and significantly increased to 138.34 cm $H_2O$ after 3 month administering Korean red ginseng. With these results, we can confirm that long-term administration of Korean red ginseng enhances the erectly capacity and that its action is mediated by endothelium derived relaxing factor and peripheral neurophysiologic enhancement.

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Activity and Stability of Alcohol Oxidase from Hansenula sp. by Electrostimulation (전기자극에 의한 알콜 산화효소의 활성도와 안정도연구)

  • Lee, Kang-Min;Kim, Kyung-Suk;Park, Chung-Ung
    • Journal of the Korean Chemical Society
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    • v.48 no.2
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    • pp.171-176
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    • 2004
  • We investigated the activity and stability of alcohol oxidase from Hansenula sp. under the electric stimulation. The activity and stability of alcohol oxidase depended on electric output voltage, stimulation time, pulse duration and pulse interval. This inactivation of the enzyme under electric stimulation could be recovered by stabilizing additives such as sugars, polymers and hydrogels. The enzyme activity retained about 52% in 10% trehalose solution under electric stimulation with 40 V and 10 min. The stabilizing of enzymes against electric stimulation showed a great potential use of enzymes in biotechnology and medical engineering fields.

Stabilization of Alcohol Oxidase under Electrostimulation; Sugars, Hydrogels and Surfactants Effect (전기자극 하에서 알콜 산화효소의 안정화연구; 당, 히드로젤, 계면활성제 효과)

  • Kim, Beom-Su;Lee, Kang-Min;Biellmann, J.F.;Kim, Kyung-Suk
    • KSBB Journal
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    • v.21 no.6
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    • pp.456-460
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    • 2006
  • We investigated the activity and stability of alcohol oxidase from Hansenula sp., Pichia pastoris, and Candida boidinii under the electric stimulation. The activity and stability of alcohol oxidase depended on electric output voltage, electric stimulation time. This inactivation of the enzyme under electric stimulation could be recovered by stabilizing additives such as sugars, surfactants and hydrogels. These alcohol oxidase was more stable in trehalose, Triton X-100, Brji solution and alcohol oxidase from Hansenula is more stable than that from P. pastoris, and C. boidinii. The stabilizing of enzymes against electric stimulation showed a great potential use of enzymes in biotechnology and medical engineering fields.

Cupping Therapy Combined with Rehabilitation for the Treatment of Radial Palsy: a Case Report

  • Benli, Ali Ramazan;Senay, Demir Yazici;Koroglu, Mustafa;Mutlu, Tansel;Erturhan, Selman;Ogun, Muhammet Nur;Sunay, Didem
    • Journal of Acupuncture Research
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    • v.35 no.1
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    • pp.1-3
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    • 2018
  • This case report demonstrates the beneficial effects of cupping therapy (CT) in a 35-year-old man who is diagnosed with a fracture of the radial shaft due to a motorcycle accident. One year after the treatment started, pseudoarthrosis developed in the radius and an autogenous iliac bone graft was performed. However, extension dysfunction in the wrist became evident. After another 6 months of physical therapy and rehabilitation, no improvements were observed. Therefore, CT and adjunctive electrostimulation were performed, after 30 days of treatment, marked recovery of muscle function and full wrist extension were observed, as determined by electromyography and a grade 5/5 on the Medical Research Council power of wrist extension scale. The results in this case study suggest that CT in conjunction with adjunctive electrostimulation, may accelerate functional recovery from postoperative radial palsy, and provide a useful alternative treatment in this situation.