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JYMS : Journal of Yeungnam Medical Science

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Kyoung Chan Choi 2 Articles
Expression of Oncogene Product in the Colorectal Carcinoma.
Young Ran Shim, Woo Young Jang, Kyoung Chan Choi, Joon Hyuk Choi, Won Hee Choi, Min Chul Shim
Yeungnam Univ J Med. 1995;12(2):210-225.   Published online December 31, 1995
DOI: https://doi.org/10.12701/yujm.1995.12.2.210
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AbstractAbstract PDF
The expression of p62"' and p2l can be seen in many solid tumor, but the pattern and incidence of expression were different according to organ, countries, and examiners, thus it is not definitely defined. Total 67 colorectal carcinoma in paraffin sections are analysed by immunohistochemically for evaluation of the p62and p21- expression according to the age, sex, chief complaints, location, differentiation, modified Dukes stage, using the specific monoclonal antibodies. The results were summarized as follows : The age of patients ranged from 32 years to 82 years. The mean age was 57.6 years. The expression of p 62y' and p21 was not correlated with age. Male was 29 cases(43.3%) and female was 38 cases(56.7%). The male to female ratio was 1:1.31. The and 95.0% in moderately differentiated adenocarcinoma, 90.0% and 90.0% in poorly differentiated <,;, adenocarcmoma, 100.0% and 100.0% in mucinous carcinoma. The positive rate of p62!and and p2l' was 94.1% and 88.2% in Dukes stage B,, 96.0% and 96.0% in Dukes stage B,, 100.0% and 100.0% in Dukes stage C,, 100.0% and 88.9% in Dukes stage C, and 100.0% and 100. o% in Dukes stage D. The expression of p62 y' in metastatic colorectal carcinoma showed diffuse and strongly positive reaction than primary colorectal carcinoma. The expression of p21 in primary colorectal carcinoma showed diffuse and strongly positive reaction than metastatic colorectal carcinoma.
A Study of Nerve Conduction Velocity of Normal Adults.
Kyoung Chan Choi, Jung Sang Hah, Yeung Ju Byun, Choong Suh Park, Chang Heon Yang
Yeungnam Univ J Med. 1989;6(1):151-163.   Published online June 30, 1989
DOI: https://doi.org/10.12701/yujm.1989.6.1.151
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AbstractAbstract PDF
Nerve conduction studies help delineate the extent and distribution of the neural lesion. The nerve conduction was studied on upper (median, ulnar and radial nerves) and lower (personal, posterior tibial and sural nerves) extremities in 83 healthy subjects 23 to 66 years of age, and normal values were established (Table 1). The mean motor terminal latency (TL): median, 3.6 (±0.6) milliseconds; ulnar, 2.9 (±0.5) milliseconds; radial nerve, 2.3 (±0.4) milliseconds. Mean motor nerve conduction velocity (MNCV) along distal and proximal segments: median, 61.2 (±9.1) (W-E) and 57.8 (±13.2) (E-Ax) meters per second; ulnar, 63.7 (±9.1) (W-E) and 50.6 (±10.0) meters per second. Mean sensory nerve conduction velocity (SNCV): median, 34.7 (±6.7) (F-W), 63.7 (±7.1) (W-E) and 62.8 (±12.3) (E-Ax) meters per second; ulnar, 38.0 (±6.7) (F-W), 63.4 (±7.5) (W-E) and 57.0 (±10.1) (E-Ax) meters per second; radial, 45.3 (±6.8) (F-W) and 64.2 (±11.0) (W-E) meters per second; sural nerve, 43.4 (±6.1) meters per second. The amplitudes of action potential and H-reflex were also standardized. Mean H latency was 28.4 (±3.2) milliseconds. And, the fundamental principles, several factors altering the rate of nerve conduction and clinical application of nerve stimulation techniques were reviewed.

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  • Skin type and nerve effects on cortical tactile processing: a somatosensory evoked potentials study
    Marco Guidotti, Clément Beaurieux, Pierre Marionnaud, Frédérique Bonnet-Brilhault, Claire Wardak, Marianne Latinus
    Journal of Neurophysiology.2023; 130(3): 547.     CrossRef

JYMS : Journal of Yeungnam Medical Science