• Title/Summary/Keyword: 염스트레스

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Effects of Salt-induced Stress on the Fluctuation and Rhizosphere Colonization of Soil Microorganisms (염류(鹽類)의 스트레스가 주요(主要) 토양미생물(土壤微生物)의 변동(變動) 및 근권정착성(根圈定着性)에 미치는 영향(影響))

  • Kwon, Jang-Sik;Suh, Jang-Sun;Weon, Hang-Yeon
    • Korean Journal of Soil Science and Fertilizer
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    • v.31 no.3
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    • pp.291-300
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    • 1998
  • A study was carried out to evaluate the effect of different salts and their Quantities on the fluctuation and rhizosphere colonization of soil microorganisms. The results obtained are as follows. The electrical conductivities(ECs) of $KNO_3$, $K_2HPO_4$, KCl and $K_2SO_4$ showed negative correlations to the number of gram positive bacteria and gram negative bacteria : the number of bacteria was significantly decreased in the KCl or $KNO_3$ treated group compared to the $K_2HPO_4$ or $K_2SO_4$ treated group. The highest microorganism density of gram negative bacteria, gram positive bacteria and Fusarium sp. in balanced salts-treated soil was observed at $0.5dS\;m^{-1}$, $2.1dS\;m^{-1}$ and $8.0dS\;m^{-1}$ of EC, respectively. The ratio of bacteria to fungi ratio in balanced salts-treated soil substantially decreased as the EC of soil increased. Ten and thirty days after soil treatment with balanced salts, the ratio of bacteria to fungi decreased to 757-1571 and 89-215, respectively. Root colonization density of Fluorescent Pseudomonas in cucumber and tomato significantly decreased as the EC of soil increased, whereas that of Fusarium sp. increased.

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Effects of a mixture of Citri Pericarpium and Scutellariae Radix on acute reflux esophagitis in rats (진피-황금 혼합물이 급성 역류성 식도염 흰쥐에 미치는 효과)

  • Lee, Jin A;Shin, Mi-Rae;Roh, Seong-Soo;Park, Hae-Jin
    • Journal of Nutrition and Health
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    • v.54 no.3
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    • pp.321-333
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    • 2021
  • Purpose: Reflux esophagitis is a disease caused by the reflux of stomach contents and stomach acid etc. into the esophagus due to defect in the lower esophageal sphincter and is currently increasing worldwide. This study was conducted to evaluate the effect of a mixture of Citrus Reticulata and Scutellariae Radix (CS) extract on acute reflux esophagitis in rats. Methods: Rats were divided into five groups for examination: normal group (Normal, n = 8), water-treated acute reflux esophagitis rats (Control, n = 8), tocopherol 30 mg/kg body weight-treated acute reflux esophagitis rats (Toco, n = 8), CS 100 mg/kg body weight-treated acute reflux esophagitis rats (CS100, n = 8), CS 200 mg/kg body weight-treated acute reflux esophagitis rats (CS200, n = 8). The experimental groups were administrated of each treatment compounds and after 90 min, acute reflux esophagitis was induced through surgery. Rats were sacrificed 5 h after surgery. We measured the level of reactive oxygen species (ROS) in serum and analyzed the expression of nicotinamide adenine dinucleotide phosphate, inflammatory, and tight junction-related proteins by western blot in the esophageal tissues. Results: CS administration significantly protected the esophageal mucosal damage due to reflux esophagitis, and the level of ROS in the serum was significantly reduced with CS administration as compared to Control. In addition, CS administration significantly suppressed mitogen-activated protein kinase (MAPK or MAP kinase) and nuclear factor-kappa B (NF-κB) pathways and increased protein expressions of tight junction protein. Conclusion: These results suggest that the CS not only regulates the expression of inflammatory proteins by inhibiting oxidative stress, but also reduces damage to the esophageal mucosa by inhibiting the expression of tight junction proteins.

Factor Influencing Health-Related Quality of Life in Korean Hypertensive Seniors with Osteoarthritis (골관절염이 동반된 고혈압 노인의 건강관련 삶의 질 영향 요인)

  • Kim, Eun-Sook
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.22 no.3
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    • pp.169-180
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    • 2021
  • This study was undertaken to determine the degree of quality of life, and factors influencing osteoarthritis in hypertensive elderly 65 years or older patients, using data from the 7th National Health and Nutrition Survey 2018. Totally, 843 subjects were included from a national sample. The SPSS WIN 26.0 program was used to analyze complex samples by applying the Rao-Scott chi-square test, t-test, and multiple regression analysis. Results indicate that quality of life of the hypertensive group with osteoarthritis is significantly lower than the group with only hypertension (t=5.07, p<0.001). Factors affecting the decrease in quality of life of the hypertensive group were age, subjective health status, and activity restrictions, and the explanatory power was 46.1% (F=12.33, p<0.001). In the hypertensive group with osteoarthritis, the effective factors included gender, cohabitation status, economic activity, subjective health status, activity restriction, body mass index, sleep time, stress perception, and depression, and the explanatory power was 44.6% (F=99.82, p<0.001). Subsequent studies showed that in order to improve the quality of life of hypertensive seniors, intervention programs are required to actively accommodate health conditions and minimize activity restrictions. In addition, for the elderly with osteoarthritis and hypertension, it is necessary to include exercise and nutrition education for body mass index management, and the development and intervention of multidisciplinary participation programs to strengthen mental health.

Multiple Functional Effects of Korea Ginseng on Vascular Endothelial Cells

  • Kim, Young-Myeong;Lee, Young-Chul
    • Proceedings of the Ginseng society Conference
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    • 2006.05a
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    • pp.13-17
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    • 2006
  • 다양한 연구에 따르면, 고려인삼은 허약한 체질, 숙취, 폐경과 월경불순, 초기 당뇨병, 영양실조, 빈혈 및 단백질 부족, 간기능 악화, 각종 독성물질에 기인한 중독, 피로, 추위, 스트레스, 산후조리, 체력쇠퇴 등에 효능이 있음이 알려져 있다. 특히 고려인삼은 혈관 기능을 효과적으로 조절함으로 고혈압, 뇌졸중, 심근경색, 동맥경화, 관절염, 당뇨, 비만 등의 질환을 효과적으로 치료하거나 예방할 수 있는 효능이 있음이 최근 연구에 의하여 밝혀지고 있다. 그러나 고려인삼 약리효능의 표적분자(target molecule)나 생화학적 작용기전(biochemical mechanism)이 세포 및 분자 수준에서 규명되지 못하여 고려인삼이 의약품으로 인정받지 못하고 건강식품으로 분류되고 있어 소비가 한인 흑인 히스패닉 시장에 한정되고 있고, 최근에는 타 경쟁국 인삼에 비해 수출 경쟁력이 약화되고 있는 실정이다. 본 연구에서는 고려인삼 추출물과 효능성분이 혈관내피세포 기능조절에 미치는 효능 및 작용기전을 규명하여 고려인삼이 호발성 혈관질환에 대한 예방 및 치료 효능이 있음을 분자 및 유전자 수준에서 확인하고자 하였다.

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산욕기 질병관리(유열)

  • Kim, Hyeong-Jong
    • Feed Journal
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    • v.4 no.10 s.38
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    • pp.132-137
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    • 2006
  • 목장 경영의 성공과 실패에는 여러 가지 요인이 작용하지만 연중 얼마나 적은 소가 도태되는가 하는 것 또한 아주 중요하게 생각해 보아야 할 사항이다. 낙농에 있어 거의 대부분의 질병이 산욕기에 발병하는데 산욕기(産褥期)란 분만으로 인한 상처가 완전히 낫고, 자궁이 평상시 상태가 되며 신체의 각기관이 임신 전의 상태로 회복되기까지의 기간으로 대개 분만 후 6~8주간을 말한다. 산욕기에 주로 발생할 수 있는 다양한 질병(산욕기 부전마비, 난산, 급성유방염, 제4위 전위증 등)들이 조기에 발견되어 적절히 치료되지 못하고 만성화되면서 전해질불균형, 에너지와 단백질의 섭취부족에 의한 영양장애로 허약과 지방간 및 케토시스 등으로 진행되어 결국 도태됨으로서 목장 경영에 있어 막대한 영향을 끼치는 것이다. 이러한 산욕기 질병의 주 원인은 건유기 사양관리에 있다. 건유기간 동안 체점수(BCS)의 변화를 최대한 줄이면서 분만전의 스트레스를 얼마만큼 줄일 수 있도록 관리하는가에 달려있다. 다시말해 분만 전 마지막 한달간에 건유에서 분만으로의 이행과정을 얼마나 매끄럽게 연결 지어주는가에 따라 산욕기 질병의 발생률이 결정되는 것이다. 본 고에서는 건유기 사양관리 소홀로 발생되는 산욕기 부전마비에 관해서 자세히 설명해 보고자 한다.

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Effect of a Mixture of Centella asiatica and Rosamarinus officinalis Leaf Extracts on Delayed Cortisol-induced Keratinocyte Migration (병풀과 로즈마리 잎 추출 혼합물의 코티솔로 유도된 각질형성세포 이동지연에 미치는 영향)

  • WonTae Jo;Miji Yeom;ShinHwan Cho;Eunae Cho;Deokhoon Park;Eunsun Jung
    • Journal of the Society of Cosmetic Scientists of Korea
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    • v.50 no.2
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    • pp.111-118
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    • 2024
  • A key component of wound healing is epithelialization, which involves the proliferation and migration of epidermal keratinocytes surrounding the wound. Increasing cortisol, a stress hormone, is known to slow the healing process by inhibiting cell proliferation and migration. This study aims to develop an ingredient that can promote delayed wound healing by cortisol through a combination of Centella asiatica (C. asiatica), known for its excellent wound healing effect, and Rosamarinus officinalis (R. officinalis) leaf known for their antipsychotic effect. R. officinalis leaf extract was found to inhibit the activity of 11β-HSD1, an enzyme involved in the production of cortisol. A combination of C. asiatica and R. officinalis leaf extracts (AlfaCalm) was found to enhance cortisol induced delayed keratinocyte migration to a greater extent than C. asiatica extract. AlfaCalm enhanced the expression of CDC42 and the formation of filopodia, which are crucial for the relaxation of the actin skeleton. These results suggest that AlfaCalm can be used as an effective wound healing material in stress condition.

Prevalence of Laryngo-pharyngeal Reflux(LPR) Related Symptoms at the Out Patient Department in Korea : One Week Survey (우리나라 이비인후과 외래환자의 인.후두 역류증상 발병빈도 조사(One Week Survey 결과))

  • Choi, Hong-Sik;Kim, Hyung-Tae;Seo, Jang-Soo;Wang, Soo-Gun;Cho, Jae-Sik;Choi, Gun;Hong, Ki-Hwan;Kim, Seok-Il;Lee, Won-Chul
    • Journal of the Korean Society of Laryngology, Phoniatrics and Logopedics
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    • v.11 no.1
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    • pp.87-97
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    • 2000
  • One week survey to investigate the prevalence rate and clinical characteristics of laryngopharyngeal reflux symptoms in Korea. The subject(n=7,704 patients) was newly enrolled patients at the out patient clinic in 90 ENT departments of resident training hospitals and 11 local clinics, which were voluntarily participated in the study 1) Twenty five percent of all enrolled patients has LPR-related symptoms or clinical findings from the examination by ENT specialists. 2) Among e name of LPR-related diagnosis, globus syndrome was e most common, and follows by reflux laryngitis, and chronic laryngitis. 3) Women was more prevalent than men, and it is common in 5th, 6th, and 7th decades, which seems to be related with aging process. 4) Most popular symtoms of LPR. were globus sensation, conic throat clearing, and hoarseness of unknown origin. 5) Aggravating factors of LPR-related symptoms were tiredness, mental stress, drink alcohol, cigarettes smoking, spicy food, and drinking coffee. 6) LPR-related symptoms were more common in professional voice users. 7) In past medical history, diseases of stomach and tonsillitis were most common.

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Use of East Deep Sea Water for the Increase of Functional Components of Ginseng (Panax ginseng C.A. Meyer) and Tomato (Lycopersicon eculentum L.) (인삼과 토마토의 기능성 성분 증진을 위한 동해 해양심층수의 이용)

  • Woo Cheon-Seok;Kang Won-Hee
    • Korean Journal of Plant Resources
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    • v.19 no.2
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    • pp.331-335
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    • 2006
  • This experiment was conducted to investigate the effect of deep sea water on fruit quality and yield of tomato. In the deep sea water treatments, fruit growth and weight were decreased as the concentration of deep sea water increased. Especially, the fresh weight of second truss was decreased significantly than first truss. Soluble solid content was increased significantly in higher concentration treatment especially at 30mM and 40mM treatment. That was increased more in the first than in the second truss fruits. Most of hexose in fruits were glucose and fructose. The reason of increased glucose and fructose contents was the decline of growth because of salinity stress by deep sea water treatment. however deep sea water treatment increased the lycopene content, especially in 20mM treatment. It is assumed that deep sea water treatment cause induction and promotion of ethylene. The higher concentration of deep sea water to the solution, the eater fruit quality improvement was noticed. However, proportional yield reduction accompanied concentration, 20mM deep sea water improved fruit quality without a significant yield reduction. The Re content was the highest among ginsenosides in all treatments. The contents total of ginsenosides in all treatments, except EC 8 treatment, was higher than those in the controlled treatment. The PT/PD value was 1.31 of the lowest in the EC 8 treatment and was 2.52 of the highest in the EC6 treatment. Rf contents in high increase was detected at all treated ginseng roots.

In vitro Inhibitory Effect of Aged Black Garlic Extract with Antioxidant Activity on MMP-2 and MMP-9 Related to Metastasis (In vitro에서 항산화 효능이 있는 흑마늘 추출물의 MMP-2 및 MMP-9에 대한 활성 억제효과)

  • Lee, Soo-Jin;Nam, Hyang;Kim, Moon-Moo;Jang, Ho-Jung;Park, Jung-Ae;Kim, Byung-Woo;Chung, Kyung-Tae
    • Journal of Life Science
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    • v.20 no.5
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    • pp.760-767
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    • 2010
  • The oxidative damage of lipids, protein, and DNA is known to be involved in not only chronic inflammations such as arthritis, hepatitis, nephritis, gastritis, colitis, and periodontitis but also metastasis. It has given impetus to searching for natural compounds without toxicity, which prevent the development of these diseases. The direct scavenging effects of aged black garlic extract (ABGE) were evaluated in vitro on DPPH radical, hydroxyl radical, hydrogen peroxide, and genomic DNA damage related to oxidative stress. Furthermore, its antioxidant effect on lipid peroxidation was investigated in human fibrosarcoma cells (HT1080), which were exposed to the hydroxyl radical generated by the Fenton reaction. It was observed that ABGE exhibited a greater inhibitory effect on hydrogen peroxide than other reactive oxygen species, and also blocked DNA oxidation and lipid peroxidation induced by the hydroxyl radical. The oxidative stress in live cells was also inhibited in the presence of ABGE. In addition, its inhibitory effects on the activity and expression of MMP-2 and -9 related to metastasis were determined using gelatin zymography and western blot. The data showed that it inhibited MMP-2 and -9 in PMA-stimulated HT1080 cells. Therefore, these results suggest that ABGE show potential as an excellent agent for prevention of metastasis related to oxidative stress.