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박현태,이두순,박기환 한국농촌경제연구원 2001 농촌경제 Vol.24 No.2
The pot-plants are various and have the characteristic of sensitivity to vogue. Recently Japan`s pot-plants have grown continuously due to becoming gardening. Moreover the structure of Korea`s flower exports is concentrated toward Japan. So the export potential of pot-plants toward Japan seems bright. Therefore, the structure of Japan`s flower market, and consumption preference need to be investigated in order to expand exports. If the strategy items through such investigation and analysis are exported, pot-plants growers will have an opportunity for overcoming current difficulties.
박현태,강창용 두레마을 친환경농업연구원 2006 친환경농업연구 Vol.8 No.1
친환경 쌀을 생산하고 있는 농가들의 경우 생산의 효율성이 높은 농가가 있는 반면 상대적으로 낮은 농가들이 있다. 친환경 쌀 산업의 발전을 위해서는 전체적인 기술의 발전이 필요하지만 농가별로 차이가 있는 생산의 효율성을 상향 평준화시키는 것도 중요하다. 이를 위해서는 먼저 친환경 쌀을 생산하는 데 있어서 어느 요인들이 효율성의 격차를 유발하는가를 검토해야한다. 본 연구에서는 친환경 쌀을 생산하는 농가 가운데 효율성이 높은 농가와 낮은 농가간의 차별화 요인을 DEA, Logit, Probit 모형과 OLS 등을 이용하여 계측하였다. 분석한 결과에 따르면 친환경 쌀 생산의 효율성에 가장 밀접한 관계를 나타내는 변수는 학력과 경력이었으며 다음으로는 논 면적이었다. 따라서 가장 먼저 친환경 쌀 생산에 관련된 지식과 정보의 확산, 그를 위한 제도적인 지원이 필요한 것으로 판단된다.
RE-07 : Estrogen, energy intake, body composition, and glucose metabolism
박현태,류기진,최정민,명수민,장항용,이경욱,김용진,신정호,허준용,김탁 대한산부인과학회 2014 대한산부인과학회 학술대회 Vol.100 No.-
목적: As women enter menopause, there is a decline in circulating estrogens. This is accompanied by alterations in energy homeostasis that result in increases in intraabdominal body fat. In animals, ovariectomy (OVX) leads to increased adiposity that is prevented by estrogen replacement. We generated various estrogen sufficient and deficient models to investigate the effects of estrogen on energy intake, body composition, and glucose metabolism. 방법: We randomized C57BL/6 J male, non-ovariectomized female, ovariectomized female, and ovariectomized female mice supplemented with 17β estradiol to receive normal CHOW or a high-fat diet (10-20 mice per group). We generated chemically- induced menopause model by injecting GnRH agonist. We measured weight gained, calories consumed, percent body fat, adipocyte size, nuclear magnetic resonance (NMR), and oral glucose tolerance test (OGTT). 결과: Male mice had a higher susceptibility to obesity than intact female mice. However, removal of the ovaries in female mice eliminated the protection to obesity and estrogen supplementation restored this protection. Estrogen supplementation reduced food intake. So, Pair-feeding strategy was performed to eliminate effect on energy intake of estrogen. NMR showed that estrogen supplementation decreased fat mass and increased lean body mass. There was no difference of OGTT between estrogen group and vehicle group. Chemically-induced menopause model shows that physiological estrogen also affects energy intake and body composition. 결론: Estrogen protects female mice from obesity and preserves lean body mass. However, estrogen supplementation neither improves nor aggravates glucose metabolism in our model.
RE-05 : The effect of estradiol on adipose tissue inflammation
박현태,장항용,이경욱,김용진,신정호,허준용,김선행,김탁 대한산부인과학회 2012 대한산부인과학회 학술대회 Vol.99 No.-
It is known that premenopausal women have lower risks for cardiovascular disease compared to men, and this sex advantage for women gradually disappear after menopause. However, the mechanisms underlying these sex differeneces are insufficiently understood. Recent studies have demonstrated that inflammation in adipose tissue has strong impacts on cardiovascular diseases. Moreover, macrophage polarization in adipose tissue has grown to become a key player in cardio-metabolic disorder. Our aim was to investigate sex specific response of adipose tissue immune cells to high fat diet and the role of estradiol to adipose tissue inflammation We develpoed C57BL/6J male, non-ovariectomized (SHAM) female, ovariectomized female, and ovariectomized female with estradiol or aromatase inhibitor to receive a normal or high fat diet. High fat diet induced adipose tissue inflammatory markers and macrophage polarization in male mice. Female mice with intact ovary were resistant to HFD induced macrophage polarization. However, T cells (CD4, CD8), dendritic cells and macrophage polarization increased in ovariectomized femlae mice compared to SHAM group. Estradiol supplementation normalized these inflammatory changes wheareas aromatase inhibitor supplementation aggrevated these changes Macrophage polarization and B and T cells, and dendritic cell change by estrogen deficiency may play an important role in developing cardio- metabolic disorder in postmenopausal women.