지리교사들의 환경운동 실천

손현옥 대한지리학회 2007 대한지리학회 학술대회논문집 Vol.- No.-

두피에 발생한 Cellular Neurothekeoma 1예

손현옥,이상윤,천신욱,노병인,조한경 대한피부과학회 2015 大韓皮膚科學會誌 Vol.53 No.6

3년간 본원에 내원한 옴 환자의 임상적 양상에 대한 고찰

손현옥,김신한,이상윤,고재완,노병인,조한경 대한피부과학회 2012 대한피부과학회 학술발표대회집 Vol.64 No.3

아로마 등마사지가 중년여성의 스트레스에 미치는 영향

손현옥,김해남 한국피부미용향장학회 2013 한국피부미용향장학회지 Vol.8 No.2

5년간 경험한 소아 원형 탈모증 환자의 임상적 고찰(2007∼2012)

손현옥 ( Hyun Ok Son ),노병인 ( Byung In Ro ),조한경 ( Han Kyoung Cho ) 대한피부과학회 2013 대한피부과학회지 Vol.51 No.7

Background: Alopecia areata (AA) is a non-scarring, autoimmune, inflammatory hair loss on the scalp and/or body. This disease affects both adults and children but there are limited data on AA in children than AA in adults. Objective: The purpose of this retrospective study is to evaluate the clinical characteristics, disease associations and psychosomatic dynamics of pediatric AA for the past 5 years. Methods: A retrospective study was performed on 120 out-patients under 14 years old who are diagnosed as alopecia areata in the department of dermatology from March, 2007 to February, 2012. Results: The proportion of pediatric group in total alopecia areata was 20.2% (120/595). According to clinical records, the alopecia areata were of 111 patients (79.9%) followed by those with alopecia universalis (4 patients; 2.8%) and alopecia totalis (5 patients; 3.6%). The ratio of males (57 patients; 47.5%) to females (63 patients; 52.5%) was 1 : 1.11. Alopecia areata was seen most frequently in the school age group (69 patients; 57.5%) and the duration period was less than one year in most cases (79.2%). Family history of alopecia areata was observed in 10.8% (13/120). The only child or eldest child being overloaded with homework and has deficient parent-child relationships including familial discord was accounted as the most susceptible group. A multiple bald patch was 51.4% in alopecia areata and the most common associated disease was atopic dermatitis (26 patients; 21.7%). Conclusion: We observed several clinical features of the pediatric AA, including epidemiology, clinical characteristics and disease associations. This study provided useful data for future research regarding AA in children. (Korean J Dermatol 2013;51(7):501∼506)

정신지체를 동반한 다수의 위성병변을 가진 거대선천멜라닌세포모반

손현옥 ( Hyun Ok Son ),고재완 ( Jae Wan Go ),이상윤 ( Sang Yoon Lee ),김신한 ( Shin Han Kim ),조한경 ( Han Kyoung Cho ) 대한피부과학회 2013 대한피부과학회지 Vol.51 No.3

Giant congenital melanocytic nevi (GCMN) are defined as melanocytic nevi that are greater than 20 cm in largest dimension at birth. GCMN is a relatively rare condition, affecting approximately 1 in 20,000 newborns. Patients with GCMN on the posterior axis and in the presence of many satellite nevi are associated with neurocutaneous melanosis. A 37-year-old female with mental retardation had dark brown nevi with hair on her back (paraspinal) and on her lower extremities. In addition, she has multiple satellite lesions distributed over her trunk and extremities. Herein, we present a case that demonstrates a relationship between CNS abnormality and multiple satellite nevus in GCMN patients with a review of the relevant literature. (Korean J Dermatol 2013;51(3):185∼188)

Streptozotocin으로 유발된 당뇨쥐의 간세포 내 Gi 단백의 양과 기능 변화

옥선명,손현식,홍옥기,이정민,김성래,장상아,윤건호,강무일,차봉연,이광우,손호영,강성구 대한당뇨병학회 2002 Diabetes and Metabolism Journal Vol.24 No.6

연구배경:당뇨병과 인슐린 작용에 있어 Gi 단백의 역할은 정설이 없는 상태이며, 당뇨병의 유병 기간에 따른 Gi 단백의 변화는 잘 알려져 있지 않다. 본 연구에서는 streptozotocind으로 유발된 인슐린의존성 당뇨쥐의 간세포를 대상으로 당뇨병의 유병 기간에 따른 Gi 단백의 기능적 변화와 Gi 단백의 양적인 변화를 α소단위의 종류에 따라 비교함으로서 인슐린 작용 및 당뇨병의 병인에서 Gi 단백의 역할을 평가하고자 하였다. 방법:Sprague­Dawley계 흰쥐 수컷에 streptozotocin을 정맥 주사하여 당뇨병을 유발시킨 후 1, 2, 3 및 5주에 간조직을 differential ultracentrifugation와 gradient centrifrgation방법으로 전세포분쇄물과 중간분쇄물 및 간세포막으로 분획한 다음 Giα의 양적 변화를 평가하기 위해서 Giα1&2, Giα₃에 대한 항체로 western blot을 실시하였고, 기능적 변화를 평가하기 위해서 pertussis toxin­catalyzed ADP­ribosylation과[35S]­GTPγS binding assay를 실시하였다. 결과:당뇨군과 대조군의 간세포에는 Giα², Giα³이 존재하는데 주로 간세포막에 존재하며, 대조군에 비해 당뇨군의 간세포막의 Giα²와 Giα³의 양이 유의하게 높게 측정되었으나 (p<0.01)당뇨병의 유병 기간 증가에 따른 변화는 없었다. Pertussis toxin­catalyzed ADP­ribosylation와[35S]­GPTγS 결합률을 실시한 결과 대조군에 비해서 당뇨군의 간세포막에서 저하되었으나(p<0.01), 당뇨병의 유병 기간 증가에 따른 변화는 없었다. 결론:인슐린의존성 당뇨쥐의 간세포에서 Gi 단백의 양적 및 기능적 변화가 있으나, 당뇨병의 유병 기간과 관계가 없는 것으로 보아, 인슐린 결핍에 의한 인슐린저항성에 대한 보상 반응으로 생각되며, 이는 인슐린 작용 및 당뇨병에서 Gi 단백이 관여함을 알 수 있었다. Background : The functional and expressional changes of Gi proteins in diabetes have been investigated extensively, no agreement has been reached in the results. Moreover, studies using rats with different diabetic duration, and using α subunits (G_ia) of Gi proteins are lacking in literatures. Thus, we assessed the changes according to the duration of diabetes and examined the expressional changes of G_ia and functional changes of G_i proteins in hepatocytes from streptozotocin-induced diabetic rats. Methods : Male Sprague-Dawley rats were injected with streptozotocin to induce diabetes ; 1, 2, 3 and 5 weeks after teh onset of diabetes, livers from the control and diabetic rats were fractionated into homogenate, interface, and plasma membrane. The levels of G_ia 1&2, G_ia 3 were quantified with western blots in each fraction. The functional changes of Gi proteins were evaluated by performing pertussis to xin-catalyzed ADP-ribosylation and measuring GTPγS binding activity. Results : 1) G_ia 2 and G_ia 3 were present mainly in the plasma membrane of hepatocytes in the diabetic and control rats, but the levels of these subunits were significantly higher in the diabetic rats, but the levels of these subunits were significantly higher in the diabetic rates than in the control rats (p<0.01). The levels of these subunits were not affected by the duration of diabetes. 2) In streptozotocin-induced diabetic rats, the levels of ADP-ribosylation of Gi proteins in liver plasma membranes decreased when pertussis toxin-catalyzed ADP-ribosylation was performed with liver tissues. However, the levels of these proteins were not affected by the duration of diabetes. 3) For the GTPγS binding activity of G_i proteins in liver plasma membranes, the diabetic rats showed significantly less activity than the control rats (p<0.01). However, the activity was not affected by the duration of diabetes. The activity was somewhat restored by the insulin treatment of liver plasma membranes in diabetic rats. Conclusion : These results suggest that the insulin-deficient diabetic state induces the quantitative and functional changes in G_i proteins may be the important compensatory reactions for the insulin resistance occurring in the insulin deficient state (J Kor Diabetes Asso 24:666~677, 2000).

Biological Activity of Flavor Components Extracted from Elsholtzia ciliata and Elsholtzia splendens

정재훈,손현옥,신한재,현학철,이동욱,임흥빈,Jeong Jae-Hoon,Sohn Hyung-Ok,Shin Han-Jae,Hyun Hak-Chul,Lee Dong-Wook,Lim Heung-Bin The Korean Society of Tobacco Science 2005 한국연초학회지 Vol.27 No.1

This study was to evaluate the biological activity of flavor components extracted from E. ciliata and E. splendens in order to survey the possibility applicable to tobacco and food industry. Flavor components were extracted with dividing into three parts; essential oil, absolute, oleoresin. In the nonenzymatic lipid peroxidation system, the inhibition rate($\%$) of essential oil were $67.3\;\pm\;20.7\%,\;58.1\;\pm\;19.3\%$ at the concentration of 50 ${\mu}g/mL$ of E. ciliata and E. splendens, respectively. The inhibition rate($\%$) of the oleoresin in E. ciliata was higher than one in E. splendens. In the enzymatic lipid peroxidation system, the inhibition rate($\%$) of essential oil and oleoresin was$14.28\;\pm\;2.38\%,\;and\;65.93\;\pm\;0.01\%,\;and\;was\;22.58\;\pm\;2.84\%\;and\;40.73\;pm\;6.04\%$. The oleoresin of two species were showed above $90\%$ of the inhibition rate($90\%$) against autooxidative lipid peroxidation system. $EC_{50}$ values in neutral red uptake assays 24 h of exposure times were $23.3\;{\mu}g/mL,\;341.0\;{\mu}g/mL\;and\;17.2\;{\mu}g/mL$ in essential oil, absolute and oleoresin from E. ciliata respectively, and were $46.4\;{\mu}g/mL,\;681.7\;{\mu}g/mL\;17.6\;{\mu}g/mL$ in three extractions of E. splendens. Oleoresin of two species showed high rate in the cytotoxic effect by neutral red uptake assay. Absolute and oleoresin did not show antibiotic and mutagenic activity. On the contrary, essential oil with over 500 ug/plate showed antibiotic and mutagenic activity in Ames test. Essential oil and oleoresin have a prolongating effect the ciliostasis of rat trachea. This results indicate that flavor components extracted from E. ciliata and E. splendens can be considered to be toxicological safe and to be the possibility applicable the cigarette, food and drug industry as a flavor for expectoration.

연성 섬유종 임상 양상을 보인 분절상 신경섬유종증 1예

천신욱,손현옥,이숙영,김종백,노병인,최한규,조한경 대한피부과학회 2016 大韓皮膚科學會誌 Vol.54 No.3

담배주류연의 세포독성에 대한 담배필터의 영향

신한재,손현옥,한정호,박철훈,허재연,이동욱,황건중,현학철,Shin Han-Jae,Sohn Hyung-Ok,Han Jung-Ho,Park Chul-Hoon,Hur Jae-Yeon,Lee Dong-Wook,Hwang Keon-Joong,Hyun Hak-Chul 한국연초학회 2005 한국연초학회지 Vol.27 No.1

The objective of this study was to evaluate the effect of cigarette filter on in vitro cytotoxicity of cigarette mainstream smoke from the cigarette. In this work, we used 3 types of cigarettes included non-filtered 2R4F cigarette, cellulose acetate-filtered 2R4F cigarette, and carbon dual-filtered 2R4F cigarette which was made from original 2R4F by replacing with an acetate filter containing carbon. The cytotoxicity of both the cigarette smoke condensate (CSC), which was collected in Cambridge filter pad, and the gas/vapor phase (GVP), which was bubbled through in phosphate-buffered saline in a gas-washing bottle, was determined using a neutral red uptake assay with CHO-K1 cells. With regard to cytotoxicity when calculated on an equal puff basis, the cytotoxicity of CSC from the filtered cigarettes was lower than that of the non filtered cigarette. Also, $EC_{50}$ vlaue of GVP from carbon filter cigarette was 40.9 puff/L, indicating the cytotoxicity to be $20\%$ lower than that of the CA filter cigarette. The cytotoxicity of the GVP was correlated to the several vapor phase components (formaldehyde, acetaldehyde, acetone, acrolein, crotonaldehyde and MEK). In conclusion, carbon filter, which significantly reduced the amount of carbonyl compounds in mainstream cigarette smoke, results in significant reductions in the cytotoxicity potential of the smoke.