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Extremely Low Frequency Magnetic Field Modulates the Level of Neurotransmitters
YoonHeeChung, YoungJooLee, HoSungLee, SuJinChung, CheolHeeLim, KeonWoongOh, UyDongSohn, EonSubPark, JiHoonJeong 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2015, Vol.19 No.1 3 15-20 (6 pages)
or 5 days (n=10) in the cage. The sham control animals were placed in the same location with the coils turned off and were exposed to the local ambient geo- magnetic field (B H=18, BV=22, BT=23 and B AC＜2 μT, whe- re BH is the horizontal magnetic field intensity, B V is the vertical magnetic field intensity, BT is the total magnetic field intensity, and B AC is the alternating magnetic field... This study was aimed to observe that extremely low frequency magnetic field (ELF-MF) may be relevant to changes of major neurotransmitters in rat brain. After the exposure to ELF-MF (60 Hz, 2.0 mT) for 2 or 5 days, we measured the levels of biogenic amines and their metabolites, amino acid neurotransmitters and nitric oxide (NO) in the cortex, striatum, thalamus, cerebellum and hippo-campus. The exposure of ELF-MF for 2 or 5 days produced significant differences in norepinephrine and vanillyl... -
Non-invasive quantification of hepatic fat content in healthy dogs by using proton magnetic resonance spectroscopy and dual gradient echo magnetic resonance imaging
Francesca Del Chicca, Andrea Schwarz, Dieter Meier, Paula Grest, Annette Liesegang, Patrick R. Kircher 대한수의학회 Journal of Veterinary Science 7 Pages
대한수의학회 Journal of Veterinary Science 2018, 제 19권 제 4호 14 570-576 (7 pages)
in humans and cats for the diagnosis of hepatic lipidosis but is unreliable at quantifying fatty infiltration when concurrent hepatic parenchymal disease exists [14,21]. Dual gradient echo magnetic resonance imaging (DGE-MRI) is considered one of the most sensitive modalities for the detection of fatty infiltration of the liver in humans [2]. This technique uses chemical shift imaging,... adult beagle dogs were anesthetized and underwent magnetic resonance examination of the cranial abdomen by performing morphologic, modified Dixon (mDixon) dual gradient echo sequence, and proton magnetic resonance spectroscopy (1H MRS) imaging. In addition, ultrasonographic liver examination was performed, fine-needle liver aspirates and liver biopsies were obtained, and hepatic triglyceride content was assayed. Ultrasonographic, cytologic, and histologic examination results were unremarkable in... -
Canine model of ischemic stroke with permanent middle cerebral artery occlusion: clinical features, magnetic resonance imaging, histopathology, and immunohistochemistry
Joon-Hyeok Jeon, Hae-Won Jung, Hyo-Mi Jang, Jong-Hyun Moon, Ki-Tae Park, Hee-Chun Lee, Ha-Young Lim, Jung-Hyang Sur, By 대한수의학회 Journal of Veterinary Science 11 Pages
대한수의학회 Journal of Veterinary Science 2015, 제 16권 제 1호 10 75-85 (11 pages)
a therapeutic plan, and evaluate the overall prognosis. In the current study, ADC mapping could not be used due to the low magnetic field of our MR system and technical problems. Therefore, further studies including advanced MR sequences will be essential to establish a more sophisticated animal model of ischemic stroke. Examination of H&E-stained tissue sections in the present investigation... C (2-week experimental period). Neurologic status was evaluated daily. Magnetic resonance imaging (MRI) was performed according to a predetermined schedule. Concentration of IL-6 in CSF was measured serially after ischemic stroke. Postmortem examination was performed for all experimental dogs. During histopathological examination, variable degrees of cavitation and necrosis due to neuronal cytopathic effects, such as pyknotic nuclei and cytoplasmic shrinkage, were... -
Effects on G2/M Phase Cell Cycle Distribution and Aneuploidy Formation of Exposure to a 60 Hz Electromagnetic Field in Combination with Ionizing Radiation or Hydrogen Peroxide in L132 Nontumorigenic Human Lung Epithelial Cells
HeeJin, HyeEunYoon, Jae-SeonLee, Jae-KyungKim, SungHoMyung, Yun-SilLee 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2015, Vol.19 No.2 6 119-124 (6 pages)
a 50-Hz, 100-microT magnetic field: replication study. J Toxicol Environ Health A. 1998;53:401-418. 37. Baum A, Mevissen M, Kamino K, Mohr U, Loscher W. A histopathological study on al terations in DMBA-induced mam- mary carcinogenesis in rats with 50 Hz, 100 muT magnetic field exposure. Carcinogenesis. 1995;16:119-125. 38. Armstrong MJ, Gara JP, Gealy R 3rd, Greenwood SK, Hilliard CA, Laws... The aim of the present study was to assess whether exposure to the combination of an extremely low frequency magnetic field (ELF-MF; 60 Hz, 1 mT or 2 mT) with a stress factor, such as ionizing radiation (IR) or H2O2, results in genomic instability in non-tumorigenic human lung epithelial L132 cells. To this end, the percentages of G2/M-arrested cells and aneuploid cells were examined. Exposure to 0.5 Gy IR or 0.05 mM H2O2 for 9 h resulted in the highest levels of aneuploidy; however, no cells... -
Changes of Afferent Transmission to the SI Cortex by Transient Co-Stimulation of Receptive Field Center and Outside in Anesthetized Rats
Yu-MiYang, SabinaLim, Chung-KilWon, Hyung-CheulShin 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2001, Vol.5 No.1 4 27-32 (6 pages)
somatosensory εvoked magnetic fields following tibial nerve stimu la tio n. Electroencephalogr Clil Neurophysiol 109: 168 -177， 1998 Nicolelis MA， Lin RC， Woodward DJ， Chapin JK. Jn duction of immerate spatiotemporal changes in tha la미ic networb by peripheral bloιk uf ascending cu taneous .formation. Natlre 361: 533 -536， 1993 Raymond SA. Effecls of nerve impulses on threshold of... 5 Hz or 200 Hz) to the receptive field (RF), quantitative determination of the changes of afferent sensory transmission was done by generating post-stimulus time histogram of unit response to the testing stimulation (TS, at 0.5 Hz) to the RF center (RFC) for 60 min. In one group of experiments, CS was delivered to the RF center (RFC). In another group of experiments, CSs were simultaneously given to both RFC and RF outside (RFO, either forepaw or hindpaw). CS of 5 Hz to RFC exerted irreversible... -
The changes of rectus abdominis muscle thickness according to the angle during active straight leg raise
Hwang Jae Lee, Kil Ho Shin, Sung Mi Byun, Hyeon Seo Jeong, Ji Su Hong, Su Ji Jeong, Wan Hee Lee 물리치료재활과학회 Physical Therapy Rehabilitation Science 5 Pages
물리치료재활과학회 Physical Therapy Rehabilitation Science 2013, 제 2권 제 1호 8 44-48 (5 pages)
in the field of rehabilitative RUSI have allowed as- sessments of the abdominal muscles’ behavior during spe- cific tasks. RUSI has proven a reliable and valid measure- ment of muscle activity and thickness based on comparisons with electromyography and magnetic resonance imaging [14]. RUSI measures of abdominal muscle thickness corre- late well with those made using magnetic resonance imaging... Objective: The purpose of this study was to investigate changes of abdominal muscles thickness according to the angle during the active straight leg raise (ASLR) in young healthy subjects. Design: Cross sectional study. Methods: Twenty-three healthy university students (13 men and 10 women) voluntary participated to the study in S University. The ASLR was performed with the subject lying supine with lower extremities straight on a standard plinth, hands resting on the chest, and elbows on the... -
Lymphosarcoma in the spinal cord of a cat
Jae Hyeon Shin, Yong Eun Shin, Jae Hoon Kim 대한수의학회 대한수의학회 학술대회발표집 2 Pages
대한수의학회 대한수의학회 학술대회발표집 추계학술심포지움 286 365-366 (2 pages)
local animal hospital. According to magnetic resonance image, mass was observed from 4 to 7 lumbar spinal nerves. The excised mass was presented to the Pathology Department of the ..PAGE:2 366 Korean Journal of Veterinary Science Veterinary Medicine, Jeju National University. The submitted mass was fixed in 10% buffered formalin, trimmed, embedded in paraffin wax, sectioned at 3 ㎛ stained... -
Recurrence after exenteration for canine orbital malignant schwannoma
Seonmi Kang, Jungwhan Yang, Yesran Lee, Hyomyeong Pyo, Jaehoon Kim, Kangmoon Seo 대한수의학회 Journal of Veterinary Science 4 Pages
대한수의학회 Journal of Veterinary Science 2017, 제 18권 제 1호 17 115-118 (4 pages)
[1], were also documented. Carcinoma and sarcoma were reported to be the most common tumor types in canine and feline orbits, and both types have shown locally invasive behavior on magnetic resonance imaging results in a retrospective study [2]. This similarity of possible extensions into the surrounding tissues, observed as heterogeneous signal enhancement, has made it necessary to perform... A 14-year-old Maltese dog presented with progressive exophthalmos and external deviation of the right eye. Ultrasonography revealed the presence of a retrobulbar mass and fine-needle aspiration cytology was performed, which detected a malignant mass. There was no evidence of metastasis on thoracic and abdominal radiography. Computed tomography showed no invasion into the bony orbit and no metastasis to the lung or lymph nodes. Exenteration was performed to remove the mass completely. Malignant... -
Pathology of non-thermal irreversible electroporation (N-TIRE)-induced ablation of the canine brain
John H. Rossmeisl Jr., Paulo A. Garcia, John L. Roberston, Thomas L. Ellis, Rafael V. Davalos 대한수의학회 Journal of Veterinary Science 8 Pages
대한수의학회 Journal of Veterinary Science 2013, 제 14권 제 4호 9 433-440 (8 pages)
general anesthesia was induced with intravenous (IV) diazepam (1 mg/kg; Abbott Laboratories, USA), propofol (4∼6 mg/kg; Abbott Laboratories), and fentanyl (10 μg/kg/hr; Abbott Laboratories). Magnetic resonance imaging (MRI) examination of the brain was then performed with a low-field magnet (0.2 T Vet-MRI; Esaote S.p.A., Italy) using standard T1-weighted (T1W), T2-weighted (T2W), fluid... of treatment were monitored with clinical and magnetic resonance imaging examinations. Brains were subjected to histopathologic and ultrastructural assessment along with Bcl-2, caspase-3, and caspase-9 immunohistochemical staining following sacrifice 72 h post-treatment. Adverse clinical effects of N-TIRE were only observed in the dog treated at the upper energy tier. MRI and neuropathologic examinations indicated that N-TIRE ablation resulted in focal regions of severe cytoarchitectural and... -
Improved rat spinal cord injury model using spinal cord compression by percutaneous method
Wook-Hun Chung, Jae-Hoon Lee, Dai-Jung Chung, Wo-Jong Yang, A-Jin Lee, Chi-Bong Choi, Hwa-Seok Chang, Dae-Hyun Kim, Hyo Jin Chun 대한수의학회 Journal of Veterinary Science 7 Pages
대한수의학회 Journal of Veterinary Science 2013, 제 14권 제 3호 13 329-335 (7 pages)
with respect to inflation volume: 20 μL (n = 18), 50 μL (n = 18) and control (Fogarty catheter inserted but not inflated; n = 10). Neurological assessments were then made based on BBB score, magnetic resonance imaging and histopathology. Both inflation volumes produced complete paralysis. Gradual recovery of motor function occurred when 20 μL was used, but not after 50 μL was applied.... guidance. Animals were divided into three groups with respect to inflation volume: 20 μL (n = 18), 50 μL (n = 18) and control (Fogarty catheter inserted but not inflated; n = 10). Neurological assessments were then made based on BBB score, magnetic resonance imaging and histopathology. Both inflation volumes produced complete paralysis. Gradual recovery of motor function occurred when 20 μL was used, but not after 50 μL was applied. In the 50 μL group, all gray and white matter was lost...