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안성기,전시영,김진평,백승문 대한이비인후과학회 2002 대한이비인후과학회지 두경부외과학 Vol.45 No.8
Lipomas are one of the most common benign neoplasm in the subcutaneous tissues, but tonsil of lipoma is extremely rare. To our knowledge, there are about fifteen previously reported cases of tonsillar lipoma in the world literature review. The pathogenesis of lipoma represents a benign neoplastic growth or a harmatomatous malformation. Lipomas of tonsil may be asymptomatic or it can manifest as a foreign body sensation in the throat, such as in coughing, soreness or even respiratory obstruction. The treatment of choice is excision of the mass with its stalk or unilateral tonsillectomy with excision of the mass. We report a case of lipoma of the tonsil with a review of the related literature. (Korean J Otolaryngol 2002;45:831-3)
Immunohistochemical Study on β1- and β2-Adrenergic Receptors in Rat Vestibular Nuclei
안성기,Roza Khalmuratova,허동구,김호엽,박현우,주연희,강흥수 대한평형의학회 2012 Research in Vestibular Science Vol.11 No.2
Background and Objectives: The aim of this study was to examine the localizations of β1- and β2-adrenergic receptors (ARs) in rat vestibular nuclei by immunohistochemical staining procedure. Materials and Methods: Twelve male Sprague-Dawley rats were used in this study. Primary antibodies for the β1- and β2-ARs were used. The sections were treated with a biotinylated goat anti-rabbit antibody. The sections were then incubated in avidin-biotin-peroxidase reagent and processed with immunoperoxidase using 3.3’-diaminobenzidine tetrahydrochloride. Results: β1-AR and β2-AR immunopositive neurons were found to be distributed throughout the four major vestibular nuclei. Both receptors were primarily detected in neuronal somata and their proximal dendrites. β1-AR and β2-AR were moderately expressed in the superior vestibular nucleus, lateral vestibular nucleus, medial vestibular nucleus,and spinal vestibular nucleus. Conclusion: The present study demonstrates, for the first time, that β1-AR and β2-AR receptors are localized in rat vestibular nuclei. Furthermore, this study may provide additional speculation into the role of ARs during vestibular signal processing. Further studies are needed to clarify the roles played by β1-ARs and β2-ARs through physiologic and functional studies. Background and Objectives: The aim of this study was to examine the localizations of β1- and β2-adrenergic receptors (ARs) in rat vestibular nuclei by immunohistochemical staining procedure. Materials and Methods: Twelve male Sprague-Dawley rats were used in this study. Primary antibodies for the β1- and β2-ARs were used. The sections were treated with a biotinylated goat anti-rabbit antibody. The sections were then incubated in avidin-biotin-peroxidase reagent and processed with immunoperoxidase using 3.3’-diaminobenzidine tetrahydrochloride. Results: β1-AR and β2-AR immunopositive neurons were found to be distributed throughout the four major vestibular nuclei. Both receptors were primarily detected in neuronal somata and their proximal dendrites. β1-AR and β2-AR were moderately expressed in the superior vestibular nucleus, lateral vestibular nucleus, medial vestibular nucleus,and spinal vestibular nucleus. Conclusion: The present study demonstrates, for the first time, that β1-AR and β2-AR receptors are localized in rat vestibular nuclei. Furthermore, this study may provide additional speculation into the role of ARs during vestibular signal processing. Further studies are needed to clarify the roles played by β1-ARs and β2-ARs through physiologic and functional studies.
UAV를 이용한 산지하천 스텝-풀(step-pool) 지형 탐색
안성기,최광희,이찬주 한국지형학회 2023 한국지형학회지 Vol.30 No.3
Step-pool sequences are dominent landforms in mountain streams, and located in areas that are challenging for humans to access. This study aimed to enhance accessibility to step-pools in mountain streams using Unmanned Aerial Vehicles (UAVs). Using orthophotos and digital surface models (DEMs) generated by UAVs, the study explored the location and geometry of step-pool in mountain streams. The findings of this research indicated that using UAV to identify step-pools in mountain stream channels was highly feasible, and geometry could also be extracted from DSM. Step-pools were classified into bedrock and boulder steps, and data on step wavelength, height, slope, and pool area were obtained. However, due to the challenging nature of remote mountain areas, errors were observed in regions where mobile network accessibility was limited. Nevertheless, the results of this study offer insights into alternative research methods for improving accessibility to remote step-pools in mountain streams.
전정신경염 환자에서 Beck Anxiety Inventory 설문지를 이용한 불안감의 평가
안성기,김진용,권오진,조수연,허동구,전시영,김대우 대한평형의학회 2010 Research in Vestibular Science Vol.9 No.2
Background and Objectives The intimate relationship of vertigo and anxiety has been previously recognized. Anxiety may have an important influence on recovery of symptoms in vestibular neuritis (VN). The aim of study was to evaluate subjective anxiety of the pre-VN, at the time of onset of VN, and just after vestibular rehabilitation therapy (VRT) using Beck Anxiety Inventory (BAI)questionnaire, respectively. Materials and Methods Twenty-eight patients with VN were asked to complete the BAI and dizziness handicap inventory (DHI). Each of the BAI and DHI was scored. We also evaluated the relationship between the DHI and BAI scores. Results The VN patients at the time of attack had significantly more anxiety with vertigo and related symptoms (p<0.05). In most patients, anxiety level decreased following VRT. Conclusion These findings indicate that almost every VN patients can recovery from anxiety as vertigo regressed. However, the emotional support as well as physical and/or functional rehabilitation may be required to provide a more rapid and complete return to normal daily lives for these patients.