신성고혈압쥐에서 혈관내피층이 Phorbol Ester에 의한 수축에 미치는 영향

정수아,김형,차경훈,전제열,윤평진,염철호,박진,조남수,홍순표 대한순환기학회 2003 Korean Circulation Journal Vol.33 No.11

Plant Community Structure from the Jilmoi Wetlands to the Donghae Observatory, Baekdudaegan Mountains

Jin-Woo Choi,Kyung-Won Kim,Jung-Hun Yeum,Won-Seok Hwang 한국환경생태학회 2015 한국환경생태학회지 Vol.29 No.2

This study aims to investigate the characteristics of the vegetation structure in the sectin stretching between the Jilmoi wetlands and the Donghae Observatory and to set the criteria for the basic data for a management plan including restoration afterwards. 12 plots(10 m×40 m, 20 m×20 m) were set up to analyse the vegetation structure. The analysis of the classification by TWINSPAN and ordination by DCA, importance percentage and property, distribution of diameter of breast height, growth increments of major woody species, species diversity and the physicochemical properties of soil were all analyzed. Vegetation classes were divided into 3 communities, which are community Ⅰ(Pinus densiflora community), community Ⅱ(Quercus mongolica community) and community Ⅲ(Quercus mongolica-Tilia amurensis community). The P. densiflora community declined when competing with Q. mongolica and Fraxinus rhynchophylla and Q. mongolica competed with T. amurensis on an understory layer in Q. mongolica community. Q. mongolica competed with T. amurensis on both canopy and understory layers in Q. mongolica-T. amurensis community. P. densiflora declined and it was assumed to succeed to F. rhynchophylla or T. amurensis through Q. mongolica based on the importance percentage and distribution of the diameter of the breast height of small and middle sized trees. The age of P. densiflora was between 47 to 51 years old and Q. mongolica was 61years old. T. amurensis was 61 years old and the growth of Q. mongolica slowed a little. As the result of Shannon's index of species diversity, community Ⅰranged from 0.9578 to 1.1862, community Ⅱranged from 0.7904 to 1.2286 and community Ⅲranged from 0.8701 to 1.0323. The contents of organic matter and cation were low compared to uncultivated mountain soil and it were analysed to be inappropriate for tree growth.

Chicken consumption and insulin resistance in non-diabetic older adults

Kyung-Jin Yeum,Young-Sang Kim,Nam-Seok Joo 한국영양학회 2020 Journal of Nutrition and Health Vol.53 No.4

Purpose: Histidine-containing dipeptides, which are rich in chicken, have been reported to reduce the risk of metabolic abnormalities via anticarbonylation mechanism in animal models. To determine the effect of dietary histidine-containing dipeptides on metabolic risk factors in humans, the relation between chicken consumption and insulin resistance were determined in a population consuming high carbohydrate and low protein. Methods: A total of 7,183 subjects (2,929 men and 4,254 women) aged ≥ 50 years from the Korea National Health and Nutrition Examination Survey (KNHANES) were divided into three groups according to chicken consumption (rarely, monthly, and weekly), and evaluated for the metabolic risk factors using homeostasis model assessment for insulin resistance (HOMA-IR) and quantitative insulin sensitivity check index (QUICKI) in this cross-sectional study. The fourth and fifth (IV-1–3 & V-1) KNHANES, which had blood insulin data, were chosen for the current study. Results: The chicken consumption was significantly associated with insulin (p for trend = 0.018) and HOMA-IR (p for trend = 0.023) in men. In particular, the ‘weekly’ chicken consuming men in the lowest tertile (< 65.0%) of carbohydrate intake group had significantly lower HOMA-IR (p for trend = 0.033) and higher QUICKI (p for trend = 0.043) than the ‘rarely’ intake group. In addition, the odds ratio for abnormal HOMA-IR was 0.55 (95% confidence interval [CI], 0.31–0.99) and QUICKI was 0.47 (95% CI, 0.26–0.86) for the ‘weekly’ chicken consuming group. Conclusion: The ‘weekly’ chicken consumption had a beneficial effect on insulin resistance and it may partially be due to the major bioactive components in chicken, histidinecontaining dipeptides.

Carotenoids: Functions and Recent Research Progress

Yeum, Kyung-Jin The Korean Society of Food Science and Nutrition 1996 Preventive Nutrition and Food Science Vol.1 No.2

Carotenoids are abundant int he Korean food supply. The intake of foods rich in carotenoids appears to be associated with optimal health, and a reduction in the risk of cancer, cardiovascular disease, macular degeneration and cataract formation. Specific dietary carotenoids may be responsible for these specific protective effects. Hydrocarbon carotenoids such as $\alpha$-,$\beta$-carotenes and lycopene may reduce the risk of cancer and heart disease, whereas oxygenated carotenoids, such as lutein and zeaxanthin, may be important in protection of the eye. Dietary carotenoids, such as lutein, cryptoxanthin, $\alpha$-carotene, $\beta$-carotene and lycopene can be readily obtained from the diet, Green leafy vegetables, such as spinach and broccoli, contain both oxygenated and hydrocarbon carotenoids ; yellow or orange vegetables, such as carrots, have high levels of $\alpha$-carotene and $\beta$-carotene ; and tomatoes contain high amounts of lycopene. Besides being important vitamin A sources, provitamin A carotenoids such as $\alpha$-carotene, $\beta$-carotene and cryptoxanthin, participate in the cell defense systems that are associated with radical quenching. Non-provitamin A carotenoids, such as lutein and lycopene, major carotenoids in human plasma, have also been reported to possess strong antioxidant capability. The alteration of dietary sources of carotenoids can modify their levels in the circulation and target tissues, and thus prevent or delay the onset of these chronic diseases.

Carotenoids : Functions and Recent Research Progress

Kyung-Jin Yeum 한국식품영양과학회 1996 Preventive Nutrition and Food Science Vol.1 No.2

Carotenoids are abundant in the Korean food supply. The intake of foods rich in carotenoids appears to be associated with optimal health, and a reduction in the risk of cancer, cardiovascular disease, macular degeneration and cataract formation. Specific dietary carotenoids may be responsible for these specific protective effects. Hydrocarbon carotenoids such as α-, β-carotenes and lycopene may reduce the risk of cancer and heart disease, whereas oxygenated carotenoids, such as lutein and zeaxanthin, may be important in protection of the eye. Dietary carotenoids, such as lutein, cryptoxanthin, α-carotene, β-carotene and lycopene can be readily obtained from the diet. Green leafy vegetables, such as spinach and broccoli, contain both oxygenated and hydrocarbon carotenoids ; yellow or orange vegetables, such as carrots, have high levels of α-carotene and β-carotene ; and tomatoes contain high amounts of lycopene. Besides being important vitamin A sources, provitamin A carotenoids, such as α-carotene, β-carotene and cryptoxanthin, participate in the cell defense systems that are associated with radical quenching. Non-provitamin A carotenoids, such as lutein and lycopene, major carotenoids in human plasma, have also been reported to possess strong antioxidant capability. The alteration of dietary sources of carotenoids can modify their levels in the circulation and target tissues, and thus prevent or delay the onset of these chronic diseases.

Plant Community Structure from the Jilmoi Wetlands to the Donghae Observatory, Baekdudaegan Mountains

( Jin Woo Choi ),( Kyung Won Kim ),( Jung Hun Yeum ),( Won Seok Hwang ) 한국환경생태학회 2015 한국환경생태학회지 Vol.29 No.2

This study aims to investigate the characteristics of the vegetation structure in the sectin stretching between the Jilmoi wetlands and the Donghae Observatory and to set the criteria for the basic data for a management plan including restoration afterwards. 12 plots(10 m×40 m, 20 m×20 m) were set up to analyse the vegetation structure. The analysis of the classification by TWINSPAN and ordination by DCA, importance percentage and property, distribution of diameter of breast height, growth increments of major woody species, species diversity and the physicochemical properties of soil were all analyzed. Vegetation classes were divided into 3 communities, which are community Ⅰ(Pinus densiflora community), community Ⅱ(Quercus mongolica community) and community Ⅲ(Quercus mongolica-Tilia amurensis community). The P. densiflora community declined when competing with Q. mongolica and Fraxinus rhynchophylla and Q. mongolica competed with T. amurensis on an understory layer in Q. mongolica community. Q. mongolica competed with T. amurensis on both canopy and understory layers in Q. mongolica-T. amurensis community. P. densiflora declined and it was assumed to succeed to F. rhynchophylla or T. amurensis through Q. mongolica based on the importance percentage and distribution of the diameter of the breast height of small and middle sized trees. The age of P. densiflora was between 47 to 51 years old and Q. mongolica was 61years old. T. amurensis was 61 years old and the growth of Q. mongolica slowed a little. As the result of Shannon``s index of species diversity, community Ⅰranged from 0.9578 to 1.1862, community Ⅱranged from 0.7904 to 1.2286 and community Ⅲranged from 0.8701 to 1.0323. The contents of organic matter and cation were low compared to uncultivated mountain soil and it were analysed to be inappropriate for tree growth.

Plant Community Structure from the Jilmoi Wetlands to the Donghae Observatory, Baekdudaegan Mountains

Choi, Jin-Woo,Kim, Kyung-Won,Yeum, Jung-Hun,Hwang, Won-Seok Korean Society of Environment and Ecology 2015 한국환경생태학회지 Vol.29 No.2

This study aims to investigate the characteristics of the vegetation structure in the sectin stretching between the Jilmoi wetlands and the Donghae Observatory and to set the criteria for the basic data for a management plan including restoration afterwards. 12 plots($10m{\times}40m$, $20m{\times}20m$) were set up to analyse the vegetation structure. The analysis of the classification by TWINSPAN and ordination by DCA, importance percentage and property, distribution of diameter of breast height, growth increments of major woody species, species diversity and the physicochemical properties of soil were all analyzed. Vegetation classes were divided into 3 communities, which are community I (Pinus densiflora community), community II (Quercus mongolica community) and community III (Quercus mongolica-Tilia amurensis community). The P. densiflora community declined when competing with Q. mongolica and Fraxinus rhynchophylla and Q. mongolica competed with T. amurensis on an understory layer in Q. mongolica community. Q. mongolica competed with T. amurensis on both canopy and understory layers in Q. mongolica-T. amurensis community. P. densiflora declined and it was assumed to succeed to F. rhynchophylla or T. amurensis through Q. mongolica based on the importance percentage and distribution of the diameter of the breast height of small and middle sized trees. The age of P. densiflora was between 47 to 51 years old and Q. mongolica was 61years old. T. amurensis was 61 years old and the growth of Q. mongolica slowed a little. As the result of Shannon's index of species diversity, community I ranged from 0.9578 to 1.1862, community II ranged from 0.7904 to 1.2286 and community III ranged from 0.8701 to 1.0323. The contents of organic matter and cation were low compared to uncultivated mountain soil and it were analysed to be inappropriate for tree growth.

부산광역시 동백섬 문화경관림 식생구조 특성 연구

김경원 ( Kyung Won Kim ),이경재 ( Kyong Jae Lee ),최진우 ( Jin Woo Choi ),염정헌 ( Jung Hun Yeum ),안인수 ( In Su Ahn ) 한국환경생태학회 2014 한국환경생태학회지 Vol.28 No.2

본 연구는 부산광역시 지정 기념물 제 46호인 동백섬에 대해 문화경관림으로서의 식생관리방안을 제시하고자 하였다. 연구대상지는 동백섬 내 자연휴식년제 지역인 정상부 주변 20,000㎡이었다. 지형, 식생, 식생관리현황을 기준으로 식생구조 유형을 분류하였으며 유형별 식물군집구조 분석을 통해 관리방안을 도출하였다. 식생구조 유형은 관리되고 있는 동백나무림, 관리되지 않은 사스레피나무림, 험준지의 미관리된 사스레피나무림 등 3개로 구분되었으며, 식물군집구조 분석결과, 교목층에서는 곰솔이 우점하였고 아교목층에서는 동백나무(유형Ⅰ), 사스레피나무(유형Ⅱ, Ⅲ)가 우점하였다. 특히, 관목층을 중심으로 난대림의 극상수종인 후박나무가 일부 분포하였다. 흉고직경급별 분석결과, 유형Ⅰ,Ⅱ에서 중경목의 팽나무와 후박나무가 일부 분포하였고 모든 유형의 관목층에서 후박나무가 4~44주 생육하였다. 교목층의 평균 수령은 66년, 아교목층은 22.9년이었으며 종다양도는 0.5472~0.8646로 분석되었다. 동백섬의 식생관리방향으로서 기존 관리된 동백나무림은 주기적인 관리를 유지하며 관리되지 않은 사스레피나무림은 사스레피나무를 제거하고 동백나무를 식재하는 관리를 제안하였다. 관리되지 않은 험준지 사스레피나무림은 동백나무경관 형성이 불가능 할 것으로 예측되어 상록활엽수림으로의 천이유도 방안을 제시하였다. The purpose of this study is to suggest vegetation management method as the cultural landscape forest of Dongbaek Island which is the district monument. The study area was 20,000㎡ around the peak area in management as the nature sabbatical area. Vegetation structure type was classified with the criteria of topography, vegetation, management and the management plan was derived from the vegetation structure analysis according to the types. Vegetation structure types were Management-Camellia japonica, Non-management-Eurya japonica, Non-management-Rugged area-Eurya japonica. As the result of vegetation structure, Pinus thunbergii dominated in canopy layer and Camellia japonica and Eurya japonica dominated in Type Ⅰ and in Type Ⅱ and Ⅲ, respectively. Especially, Machilus thunbergii as the climax species in the warm temperate forest were distributed centering shrubs, and as the result of distribution of diameter of breast height, middle size of Celtis sinensis and Machilus thunbergii were distributed in type Ⅰ, Ⅱ. Machilus thunbergii were distributed in range of 4 to 44 individuals through the all types. Mean age of canopy layer was 66 year-old and sub-canopy layer was 22.9 year-old. Shanon’s species diversity was analysed from 0.5472 to 0.8646. As the vegetation management direction of Dongbaek island, managed Camellia japonica forest was suggested to maintain the regular management and non-managed Eurya japonica forest was required to remove the Eurya japonica and plant the Camellia japonica. In case of non managed Eurya japonica forest in rugged area, vegetation succession was required to laurel forest.

PGE<SUB>2</SUB> Regulates Pacemaker Currents through EP<SUB>2</SUB>-Receptor in Cultured Interstitial Cells of Cajal from Murine Small Intestine

Seok Choi,Kyung Won Cho,Jong-Hyun Reu,Jun-Soo Kim,Hyun Sik Mun,Myung Young Kim,Kwang Chul Park,Gwang Sik Heo,Sung Jong Chang,Cheol Ho Yeum,Pyung Jin Yoon,Jae Yeoul Jun 대한생리학회-대한약리학회 2004 The Korean Journal of Physiology & Pharmacology Vol.13 No.1

The interstitial cells of Cajal (ICCs) are the pacemaker cells in gastrointestinal tract and generate electrical rhythmicity in gastrointestinal muscles. Therefore, ICC may be modulated by endogenous agents such as neurotransmitter, hormones, and prostaglandins (PGs). In the present study, we investigated the effects of prostaglandins, especially PGE<SUB>2</SUB>, on pacemaker currents in cultured ICCs from murine small intestine by using whole-cell patch clamp techniques. ICCs generated spontaneous slow waves under voltage-clamp conditions and showed a mean amplitude of ⁣452⁑39 pA and frequency of 18⁑2 cycles/min (n=6). Treatments of the cells with PGE<SUB>2</SUB> (1μM) decreased both the frequency and amplitude of the pacemaker currents and increased the resting currents in the outward direction. PGE<SUB>2</SUB> had only inhibitory effects on pacemaker currents and this inhibitory effect was dose-dependent. For characterization of specific membrane EP receptor subtypes, involved in the effects of PGE<SUB>2</SUB> on pacemaker currents in ICCs, EP receptor agonists were used: Butaprost (1μM), EP<SUB>2</SUB> receptor agonist, reduced the spontaneous inward current frequency and amplitude in cultured ICCs (n=5). However sulprostone (1μM), a mixed EP<SUB>1</SUB> and EP<SUB>3</SUB> agonist, had no effects on the frequency, amplitude and resting currents of pacemaker currents (n=5). SQ-22536 (an inhibitor of adenylate cyclase; 100μM) and ODQ (an inhibitor of guanylate cyclase; 100μM) had no effects on PGE<SUB>2</SUB> actions of pacemaker currents. These observations indicate that PGE<SUB>2</SUB> alter directly the pacemaker currents in ICCs, and that the PGE<SUB>2</SUB> receptor subtypes involved are the EP<SUB>2</SUB> receptor, independent of cyclic AMP- and GMP-dependent pathway.

한방진단설문지 DSOM (r) S.1.1의 신뢰도연구

김미진(Mie Jin Kim),이인선(In Sun Lee),조혜숙(Hey Sook Jo),엄윤경(Yun Kyung Yeum),유주희(Ju Hee Yu),이용태(Yong Tae Lee),지규용(Gyue Yong Ji),김규곤(Gyue Gon Kim) 한의병리학회 2005 동의생리병리학회지 Vol.19 No.5