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생쥐 위장관의 Interstitial cells of Cajal(ICC)에 대한 면역조직화학적 연구
김영철,차경훈,신무경,임건한,김주영,안병수,김장만,양경철,박도영,오재욱,장인엽 조선대학교 2003 The Medical Journal of Chosun University Vol.28 No.1
Background and Objectives : Interstitial cells of Cajal(ICC) are the pacemakers in gastrointestinal tract that modulates gastrointestinal motiliey and these cells also transmit neural input from enteric nerves to smooth muscles. Recent work on tissues from patients with motility disorders that suggest that loss or defect in ICC could be related to pathophysiology in human and animal models. Immunolabelling of ICC in intestinal wall is recently developed by using specific marker, anti-c-kit antibody. Immunohistochemistry was done for ICC network in attempt to provide a morphological basis for the mechanism regulating gastrointestinal motility Methods : Cryosection was done, and whole-mount preparations of mouse stomach, gastrointestinal tract were immunolabelled using the anti-c-Kit. Immunolabelled ICC networks were observed under a confocal laser scanning microscopy. Results : According to three dimensional reconstruction study, we found that the c-Kit-positive celluar networks were widely distributed in the gastrointestinal muscle (1) circular muscle layer(IC-IM), (2) myenteric plexus(IC-MY), (3) deep muscular plexus(IC-DMP) in ileum, (4) submucosal plexus(IC-SMP) and longitudinal muscle layer(IC-LM) in colon. Conclusion : The characteristic profiles of ICC celluar networks provide a morphological basis upon the mechanism regulating gastrointestinal motility. Additional studies for the enteric nerves-ICC interaction are need to evaluate the detailed roles of Icc in gastrointestinal tract.
KIM, JAE-JIN,PARK, HAE-JEONG,JUNG, YOUNG-CHUL,CHUN, JI WON,KIM, HYE SUN,SEOK, JEONG HO,KIM, NAM WOOK,PARK, IL HO,OH, MAENG-GUN,LEE, JONG DOO Cambridge University Press 2009 JOURNAL- INTERNATIONAL NEUROPSYCHOLOGICAL SOCIETY Vol.15 No.6
<B>Abstract</B><P>Decision making in an emotionally conflicting situation is important in social life. We aimed to address the similarity and disparity of neural correlates involved in processing ambivalent stimuli in patients with schizophrenia and patients with depression. Behavioral task-related hemodynamic responses were measured using [<SUP>15</SUP>O]H2O positron emission tomography (PET) in 12 patients with schizophrenia and 12 patients with depression. The task was a modified word-stem completion task, which was designed to evoke ambivalence in forced and non-forced choice conditions. The prefrontal cortex and the cerebellum were found to show increased activity in the healthy control group. In the schizophrenia group, activity in these two regions was negligible. In the depression group, the pattern of activity was altered and a functional compensatory recruitment of the inferior parietal regions was suggested. The prefrontal cortex seems to be associated with the cognitive control to resolve the conflict toward the ambivalent stimuli, whereas the cerebellum reflects the sustained working memory to search for compromise alternatives. The deficit of cerebellar activation in the schizophrenia group might underlie the inability to search and consider compromising responses for conflict resolution. (<I>JINS</I>, 2009, <I>15</I>, 990-1001.)</P>
( Gun Wook Kim ),( Jin Hwa Son ),( Jeong Min Kim ),( Margaret Song ),( Hoon Soo Kim ),( Hyun Chang Ko ),( Byung Soo Kim ),( Moon Bum Kim ) 대한피부과학회 2015 대한피부과학회 학술발표대회집 Vol.67 No.2
Background: Acquired bilateral telangiectatic macules (ABTM) are a newly recognized clinical entity with multiple telangiectatic pigmented macules confined mostly to the upper arms. Objectives: To evaluate clinical and dermoscopic features in a group of 50 patients with ABTM and to determine the usefulness of dermoscopy for identifying patients with chronic liver diseases (CLD) Methods: Patients were selected from two tertiary teaching hospitals in Korea. Overall, 50 patients with ABTM in the skin were included in the study. The dermoscopic findings were graded on a 0-3 scale of severity: none (0), mild (1), moderate (2), severe (3). Results: We identified three valuable dermoscopic features in diagnosing ABTM including brown pigmentations, telangiectasia and angioid streak pattern. The brown pigmentations from the group without CLD were scored more severely than the group with CLD (mean score: 2.00 vs 1.48, P < 0.001). The mean severity score of telangiectasia from the group with CLD was higher than the mean from the group without CLD (2.14 vs 1.39, P < 0.001). The angioid streak pattern was characterized as bilateral, narrow and irregular lines configuring in a radiating fashion. The angioid streak pattern was observed in 63.0% of patients with and 26.1% of those without CLD (1.37 vs 0.35, P < 0.001). Conclusion: The detailed observations in ABTM with dermoscopy provide the first clues for the underlyingchronic liver disease.
Kim, Jae Kyeom,Shin, Eui-Cheol,Lim, Ho-Jeong,Choi, Soo Jung,Kim, Cho Rong,Suh, Soo Hwan,Kim, Chang-Ju,Park, Gwi Gun,Park, Cheung-Seog,Kim, Hye Kyung,Choi, Jong Hun,Song, Sang-Wook,Shin, Dong-Hoon Hindawi Publishing Corporation 2015 Journal of analytical methods in chemistry Vol.2015 No.-
<P>Few studies have investigated <I>Seomae</I> mugwort (a Korean native mugwort variety of <I>Artemisia argyi</I> H. Lév. & Vaniot), exclusively cultivated in the southern Korean peninsula, and the possibility of its use as a food resource. In the present study, we compared the nutritional and chemical properties as well as sensory attributes of <I>Seomae</I> mugwort and the commonly consumed species <I>Artemisia princeps</I> Pamp. In comparison with <I>A. princeps, Seomae</I> mugwort had higher contents of polyunsaturated fatty acids, total phenolic compounds, vitamin C, and essential amino acids. In addition, <I>Seomae</I> mugwort had better radical scavenging activity and more diverse volatile compounds than <I>A. princeps</I> as well as favorable sensory attributes when consumed as tea. Given that scant information is available regarding the <I>Seomae</I> mugwort and its biological, chemical, and sensory characteristics, the results herein may provide important characterization data for further industrial and research applications of this mugwort variety.</P>
( Gun Wook Kim ),( Hyun Ju Jin ),( Hyun Ho Cho ),( Won Jeong Kim ),( Je Ho Mun ),( Margaret Song ),( Hoon Soo Kim ),( Hyun Chang Ko ),( Byung Soo Kim ),( Moon Bum Kim ) 대한피부과학회 2014 대한피부과학회 학술발표대회집 Vol.66 No.2
Background: Labial melanotic macules are benign pigmented lesions that may clinically mimic melanoma. Whereas the dermoscopic features of other pigmented skin lesions have been extensively described, little is known about labial melanotic macules. Objectives: To describe the dermoscopic aspects of labial melanotic macules and find schematic dermoscopic patterns to these lesions. Methods: A retrospective dermoscopic study was conducted on 80 lesions with histopathologically proved labial melanotic macules. Results: We describe and define, for the first time to our knowledge, landscape painting patterns found in 65 of 80 melanotic lesions (81.3%), characterized by parallel lines orcircle lines, overlapping vessels with background brown pigmentation. The background brown pigmentations were observed in 74 of 80 lesions (92.5%), the parallel lines in 62 (77.5%), the circle lines in 20 (25.0%), and overlappin vessels in 69 (86.3%). The structureless black pigmentations were only presented in 26 of 80 melanotic lesions (32.5%). Conclusion: Dermoscopy can be useful for the clinical detection of labial melanotic macules, and “Landscape painting patterns” may represent a dermoscopic clue for the diagnosis of these lesions.
Case Reports : Giant Piloleiomyoma of the Forehead
( Gun Wook Kim ),( Hyun Je Park ),( Hoonsoo Kim ),( Suhan Kim ),( Hyunchang Ko ),( Byungsoo Kim ),( Moonbum Kim ) 대한피부과학회 2011 Annals of Dermatology Vol.23 No.2s
Cutaneous piloleiomyomas are benign smooth muscle tumors arising from the arrector pili muscles. Piloleiomyomas appear as firm dermal papules of skin color or with a reddish to brown surface, and are commonly located on the extremities. Histologically, these lesions are composed of interlacing bundles of smooth muscle cells in the reticular dermis. Our case presented with an unusually large nodule on the forehead that was accompanied by intermittent pain. Histological analysis was compatible with piloleiomyoma and the lesion showed haphazardly arranged bundles of smooth muscle in the dermis. We describe herein an interesting case of a giant piloleiomyoma occurring on the forehead. (Ann Dermatol 23(S2) S144~S146, 2011)
Observation of a multiferroic critical end point.
Kim, Jae Wook,Haam, S Y,Oh, Y S,Park, S,Cheong, S-W,Sharma, P A,Jaime, M,Harrison, N,Han, Jung Hoon,Jeon, Gun-Sang,Coleman, P,Kim, Kee Hoon National Academy of Sciences 2009 PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF Vol.106 No.37
<P>The study of abrupt increases in magnetization with magnetic field known as metamagnetic transitions has opened a rich vein of new physics in itinerant electron systems, including the discovery of quantum critical end points with a marked propensity to develop new kinds of order. However, the electric analogue of the metamagnetic critical end point, a 'metaelectric' critical end point, has been rarely studied. Multiferroic materials wherein magnetism and ferroelectricity are cross-coupled are ideal candidates for the exploration of this novel possibility using magnetic-field (H) as a tuning parameter. Herein, we report the discovery of a magnetic-field-induced metaelectric transition in multiferroic BiMn(2)O(5), in which the electric polarization (P) switches polarity along with a concomitant Mn spin-flop transition at a critical magnetic field H(c). The simultaneous metaelectric and spin-flop transitions become sharper upon cooling but remain a continuous cross-over even down to 0.5 K. Near the P = 0 line realized at mu(0)H(c) approximately 18 T below 20 K, the dielectric constant (epsilon) increases significantly over wide field and temperature (T) ranges. Furthermore, a characteristic power-law behavior is found in the P(H) and epsilon(H) curves at T = 0.66 K. These findings indicate that a magnetic-field-induced metaelectric critical end point is realized in BiMn(2)O(5) near zero temperature.</P>
( Gun-wook Kim ) 한국피부장벽학회 2018 한국피부장벽학회지 Vol.20 No.1
Moisturizer is a major component of basic daily skin care, particularly in presence of epidermal barrier alteration and reduced epidermal water content. There are three main types of moisturizers depending on their mechanism of action. (1) Emollients are mostly made up of lipids and oils, which hydrate and improve the skin softness, flexibility, and smoothness. In stratum corneum, ceramides are the major lipid constituents and along with neutral lipids, they form broad laminated intercellular sheets, which act as barriers to our environment. Natural ceramides are too expensive and several pseudo-ceramides are useful as emollients. (2) Occlusives are substances that serve the function of maintaining skin water content by creating a hydrophobic barrier over the skin and blocking transepidermal water loss. (3) Humectants consist of hygroscopic substances which can help the stratum corneum to absorb water by attracting water from dermis and a humid environment into the epidermis. Natural moisturizing factor made of mixture of low molecular weight soluble hygroscopic compounds such as lactic acid, pyrrolidone carboxylic acid, and amino acids is a major player for hydration of the stratum corneum. Our review helps provide a fundamental understanding of the physical and chemical effects of the use of moisturizers.