• Title/Summary/Keyword: Cold injury

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A Mechanistic Study on the Early Stage-Events Involved in Low Temperature Stress in Clamydomonas reinhardtii (Clamydomonas reinhardtii의 냉해 초기과정에 관한 기작론적 연구)

  • Cho, Hyun-Soon;Kim, Chang-Sook;Jung, Jin
    • Applied Biological Chemistry
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    • v.37 no.6
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    • pp.433-440
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    • 1994
  • The exposure of Clamydomonas reinhardtii to low temperatures resulted in an accumulation of cellular pyruvate that dissipated when the chilled cells returned to ambient temperature. The dissipation of pyruvate accumulation was accompanied by an increase in the production level of superoxide radicals $(O_2^-)$ in cells. The formation of $O_2^-$ at an excessive level during the post-chilling period was apparently countered by a substantial activation of superoxide dismutase (SOD). All these results are similar to those observed previously in rice seedlings subjected to the cold-treatment, implicating that a common mechanism is probably underlying for the primary processes of chilling injury both in higher plants and in algae. It was also observed that the activation of Mn-containing SOD contributes the major share in the increase of SOD activity of whole algal cells. Because Mn-SOD is present only in mitochondria, the observation corroborates the concept that the $O_2^-$ scavenging enzyme would be induced to cope with the cold treatment-caused adverse situation in mitochondria where the toxic active oxygen is produced at rates far exceeding the normal rate.

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Postchilling Accumulation of Superoxide in Cells and Chilling Injury in Rice Plant (Superoxide의 세포내 축적과 벼냉해의 발현)

  • Kim, Jong-Pyung;Hyun, Il;Jung, Jin
    • Applied Biological Chemistry
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    • v.30 no.4
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    • pp.364-370
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    • 1987
  • The $O_2^-$ level of the extract from young rice leaves, which was cold treated for 2 days and then placed at room temperature for a period of time significantly higher than that from tissues untreated. $O_2^-$ level in leaves was practically unchanged during cold treatment for 48 hours. But it started to increase to arrive at maximum in 8 hours, once the plants were placed under room temperature. The abnormal production of $O_2^-$ in mitochondria during postchilling process was interpreted as a biochemical consequence of accumulation of glycolysis product(s) in cytosol and/or NADH in mitochondrial matrix due to disruption of catabolic balance at low temperature. Mitochondria isolated from the chilling injured tissue was found to have lost considerably their respiratory activity. This fact may imply the involvement of intramitochondrial accumulation of $O_2^-$ in the inactivation of electron transport chain system. The observation that mitochondria in the presence of the $O_2^--producing$ enzymatic system (Xanthine/Xanthine oxidase) lost their respiratory activity supports this inference. It was also found in this work that Superoxide dismutase (SOD) is a substrate inducible enzyme, and that SOD is a possible protective agent in plant cell against chilling injury.

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A Literature Study on the External Treatment of a Burn (火傷의 外治法에 對한 文獻的 考察 (外用藥을 중심으로))

  • Yu, Mi-Kyoung;Jeong, Dong-hwan;Sim, Sang-hee;Park, Su-Yeon;Kim, Jong-han;Choi, Jung-hwa
    • The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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    • v.16 no.3
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    • pp.38-67
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    • 2003
  • The burn is acute skin injury caused by fire, hot water. steam. hot oil, sour and salty. It is occurred frequently in the daily life as well as oriental therapy like moxibustion therapy, physical therapy. Nevertheless, medical treatment of the burn is almost dependent on western cure. So we chose the oriental medicine textbooks and the oriental medicine journals that were dealing with the drugs, processing the drugs. peculiar treatment put first external cure. The results were as follows; 1. The burn is acute skin injury caused by fire, hot water, steam, hot oil, sour and salty. 2. The burn cause blisters, irritability and restlessness, nausea, dryness of mouth, constipation, in case of serious, coma, dyspnea and death. The early stage of the burn, blisters form by skin damage and they burst into skin ulceration from which pus issues, the latter term, the wound form scab and healed up. 3. In a light case, medical treatment of the burn was used external treatment by medicine for externalism use, in a serious case, it was used both as an internal remedy and medicine for outward application. Also in the early stage, it was careful of using the cold and cool medicine, as the process of healing, it was used alleviating pain, detoxicating, moistening the skin, growing muscle and skin, convergence, evacuating pus, regeneration of the tissue, strengthen the spleen and nourishing the stomach. 4. The external treatment medication is Herba Ephedrae Oil(麻油), Radix ET Rhizoma Rhei(大黃), Glauberitum(寒水石), Water(水), Pig OiI(猪油), Pig Fat(猪脂), Radix Angelicae Gigantis(當歸), Rhizoma Coptidis(黃連), Cortex Phellodindri(黃栢). The White of an Egg(鷄子淸), Raw Honey(生蜜), Honey(蜜), Wine(酒), Etc. It is mostly the cold and cool medications. 5. Soft extracted and powered dosage form in external treatment is much used. The soft extracted form(32times used) are mostly Chung Ryang paste(淸凉膏) and Fructus Papaveris paste(罌粟膏). The powered form(30times used) are mostly Bingsang Powder(氷霜散), Bosaenggugo Powder(保生救苦散), Sahwang Powder(四黃散). The others is much a various powder adding solvent. 6. If varicella stage, erosion after varicella stage, oozing stage and extreme pain stage, the powder adding solvent is much used. If little oozing stage. ulcering stage, scabing stage and a chronic stage, Soft extracted dosage form is much used. 7. The most many(26.65%) used method is that apply each medication power mixed water(水), wine(酒), honey(蜜) in a wounded part.

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Characteristics of Growth and Development of Cuttings and Rooted Cuttings affected by Natural Low Temperature in Chrysanthemum 'Baekma' (국화 '백마'의 자연저온을 받은 삽수 및 묘의 생육 특성)

  • Choi, Seong Youl;Lim, Jin Hee;Park, Sang Kun;Kil, Mi Jung
    • FLOWER RESEARCH JOURNAL
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    • v.19 no.2
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    • pp.96-102
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    • 2011
  • The objective of study was carried out to find a proper entrance date for breaking dormancy depending on cutting and entrance date into greenhouse investigating plant growth and flowering characteristics of chrysanthemum 'Baekma'. Days to visible bud formation and days to flowering were increased as cutting date was delayed. The flowering rate of cutting on September 18 was 100% while cutting on October 30 did not induce flower bud formation. Flower characteristics were surveyed after 'Baekma' and 'Jinba' rooted cuttings were planted on September 10. Branching formation rate of 'Baekma' was gradually increased as entrance date was delayed while that of 'Jinba' was about 70-80% regardless of entrance date. Lethality of 'Baekma' moving into greenhouse on December 20 was 1.5% by cold injury. 'Jinba' started to die on November 10 by cold injury and lethality of 'Jinba' moving into greenhouse on December 20 was 21.7%. Thus, lethality of 'Jinba' was about 5-14 times higher than that of 'Baekma'. Days to visible bud formation and days to flowering were decreased as entrance date was delayed in chrysanthemum 'Baekma'. Days to visible bud formation of entrance date on November 10 and December 10 were 67.9 and 50.3, respectively. On the other hand, that of 'Jinba' was increased until entrance date on December 10 and decreased on December 20. Based on these results, it was suggested that dormancy of 'Baekma' was started at late September and completed at late October.

Fluoxetine and Sertraline Attenuate Postischemic Brain Injury in Mice

  • Shin, Tae-Kyeong;Kang, Mi-Sun;Lee, Ho-Youn;Seo, Moo-Sang;Kim, Si-Geun;Kim, Chi-Dae;Lee, Won-Suk
    • The Korean Journal of Physiology and Pharmacology
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    • v.13 no.3
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    • pp.257-263
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    • 2009
  • This study aimed to investigate whether selective serotonin reuptake inhibitors (SSRIs) attenuate brain injury and facilitate recovery following photothrombotic cortical ischemia in mice. Male ICR mice were anesthetized and systemically administered Rose Bengal. Permanent focal ischemia was induced in the medial frontal and somatosensory cortices by irradiating the skull with cold light laser. The animals were treated with fluoxetine or sertraline once a day for 14 d starting 1 h after ischemic insult. Treatment with fluoxetine and sertraline significantly reduced the infarct size. The Evans blue extravasation indices of the fluoxetine- and sertraline-treated groups were significantly lower than that of the vehicle group. Treatment with fluoxetine and sertraline shifted the lower limit of the mean arterial blood pressure for cerebral blood flow autoregulation toward normal, and significantly increased the expression of heme oxygenase-1 (HO-1) and hypoxia-inducible factor-1 ${\alpha}$ (HIF-1 ${\alpha}$) proteins in the ischemic region. These results suggest that SSRIs, such as fluoxetine and sertraline, facilitate recovery following photothrombotic cortical ischemia via enhancement of HO-1 and HIF-1 ${\alpha}$ proteins expression, thereby providing a benefit in therapy of cerebral ischemia.

Nationwide Study on the Characteristics of Patients Visiting and Using Korean Medical Facilities by Sex (전국민을 대상으로 한 한방의료기관 이용환자의 성별 이용실태 및 특성비교연구)

  • Jung, HaeChang;Park, HaeMo;Lee, Sundong
    • The Journal of Korean Medicine
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    • v.35 no.1
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    • pp.75-87
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    • 2014
  • Objectives: This study aimed to analyze the utilization of Korean medical clinics by sex. Methods: Data was based on reports about usage and consumption of Korean medicine in 2011 by the Ministry of Health and Welfare and Korea Institute for Health and Social Affairs. 171 Korean medical hospitals and more than 300 Korean medical clinics were selected after 2 rounds of extraction, from the 12,250 Korean medical institutions throughout the country. The investigation was carried out between August 25 and September 30, 2011. The study group was composed of 290 men and 813 women; Korean medical institutions including clinics and hospitals were mainly used for their health care. Results: 1. For sociodemographic distribution, sex, marital status, education level, occupation status, and income level showed statistically significant differences. 2. Females had a lower subjective health status than did males. Muscle injury, hwa-byung, gastric disorder, lumbago, common cold, weight loss, and herbal tonics showed differences in prevalence rates between the sexes. 3. Arthritis, muscle injury, gastric disorder, ankle sprain, herbal tonics, and stroke showed differences in usage rates between the sexes. Likewise, major treatment methods had differences between the sexes. 4. There were no statistically significant differences between the sexes concerning acupuncture. Conclusions: Females were lower than males in several aspects of income and education level and occupation status. Males had a higher subjective health status than did females. Differences by sex of treatment methods and prevalence rates of several diseases existed.

The Study on the Pathology of Soyangin in Sasang Constitutional Medicine (SCM) (소양인(少陽人) 병리론(病理論)에 관한 고찰(考察))

  • Hwang, Min-Woo;Koh, Byungh-Hee
    • Journal of Sasang Constitutional Medicine
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    • v.21 no.3
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    • pp.1-16
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    • 2009
  • 1. Objectives: This research was proposed to find out the pathology of Soyangin in Sasang Constitutional Medicine(SCM). 2. Methods: The related contents of the pathology of Soyangin were selected in Je-Ma Lee's literatures such as "Dongmu-YuGo(東武遺稿)"(DYG), "Donguisusebowon-SaSangchobongyun(東醫壽世保元四象草本卷)"(DSS), "Donguisusebowon-GabObon(東醫壽世保元甲午本)"(DGO), "Donguisusebowon-ShinChukbon(東醫壽世保元辛丑本)"(DSC), and the research was written in order to find out the physiology and pathology of Soyangin in SCM. 3. Results and Conclusions: The chronical change of pathologic concept in Soyangin diseases as follows : Pathology in Soyangin diseases was much Hot Qi(熱氣), and more ascending Qi, less descending Qi in DYG, DSS. In "Discourse on the viscera and bowels" of DGO and DSC, Soyangin has a circulation of Water-Food Hot Qi of Spleen Group(脾黨) and Water-Food Cold Qi of Kidney Group(腎黨). Exterior Disease(表病) was the injury of Exterior-Qi such as mouth-hip Qi(口膀胱氣) by Anger-Nature-Qi(怒性氣), and Interior Disease(裏病) was the injury of Interior-Qi such as kidney-large intestine Qi(腎大腸氣) by Sorrow-Emotion-Qi(哀情氣). All diseases of Soyangin are caused by insufficient Cool Yin Qi(陰淸之氣) in Kidney Group(腎黨), so the pathology of Soyangin was focused on Requisite energy(保命之主) and each small viscera and bowels(偏小之臟). In this viewpoint, the schema of Soyangin diseases such as Soyangsangpoong-syndrome(少陽傷風證), Kyulhyung-syndrome(結胸證), Mangeum-syndrome(亡陰證), Hyungkyukyeol-syndrome(胸膈熱證), Sogal-syndrome(消渴證) and Eumhuoyeol-syndrome(陰虛午熱證) were designed to explain the mechanism of each syndrome.

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The Classification and Criterion for Low Back Pain Examined from Reference Books of Yi Xue Ru Men(醫學入門) (『의학입문(醫學入門)』의 인용서적으로 살펴본 요통(腰痛)의 분류와 기준)

  • Jo, Hak-Jin
    • Journal of Korean Medical classics
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    • v.28 no.1
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    • pp.35-53
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    • 2015
  • Objectives : In order to find how reference books of Yi Xue Ru Men reflect the classification and criterion for low back pain(LBP). Methods : From reference books of Yi Xue Ru Men, select the texts on classification and criterion for LBP. Results : According to the causes of LBP, Chao Yuan Fang(巢元方) in Sui Dynasty assorted to 5 types of LBP at the very first. Chen Wu Ze(陳無擇) in Song Dynasty made 7 divisions by external, internal, and non-external, non-internal causes. According to the pulse of LBP, Yan Yong He(嚴用和) first categorized 4 groups, Zhu Zhen Heng(朱震亨) added another 4 groups. Aside from this standard, Zhu(朱震亨) adopted the cause standard. Depending on Yunqi(運氣), Lou Ying(樓英) classified 5 types. But his classification had been not adopted by any TCM books. According to symptom of 6 varieties(六變), Zhang Jie Bin(張介賓) assorted external(表), internal(裏), deficiency(虛), sufficiency(實), cold(寒) and heat(熱), add 2 groups besides them. But his categorization did not reflect Yi Xue Ru Men. Li Chan(李梴), the author of this book chose causes and pulse classification standards that Zhu Zhen Heng had adopt. Conclusions : In the side of classification and criterion for LBP, Li Chan first divided 2 group, external and internal injury. After it he subdivided both groups to 10 subgroup. His classification is similar to Chen(陳無擇)'s, but actually followed the classification for external and internal injury that was invented by Li Dong Yuan(李東垣).

Enhancement of Antinociception by Co-administrations of Nefopam, Morphine, and Nimesulide in a Rat Model of Neuropathic Pain

  • Saghaei, Elham;Zanjani, Taraneh Moini;Sabetkasaei, Masoumeh;Naseri, Kobra
    • The Korean Journal of Pain
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    • v.25 no.1
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    • pp.7-15
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    • 2012
  • Background: Neuropathic pain is a chronic pain due to disorder in the peripheral or central nervous system with different pathophysiological mechanisms. Current treatments are not effective. Analgesic drugs combined can reduce pain intensity and side effects. Here, we studied the analgesic effect of nimesulide, nefopam, and morphine with different mechanisms of action alone and in combination with other drugs in chronic constriction injury (CCI) model of neuropathic pain. Methods: Male Wistar rats (n = 8) weighing 150-200 g were divided into 3 different groups: 1- Saline-treated CCI group, 2- Saline-treated sham group, and 3- Drug-treated CCI groups. Nimesulide (1.25, 2.5, and 5 mg/kg), nefopam (10, 20, and 30 mg/kg), and morphine (1, 3, and 5 mg/kg) were injected 30 minutes before surgery and continued daily to day 14 post-ligation. In the combination strategy, a nonanalgesic dose of drugs was used in combination such as nefopam + morphine, nefopam + nimesulide, and nimesulide + morphine. Von Frey filaments for mechanical allodynia and acetone test for cold allodynia were, respectively, used as pain behavioral tests. Experiments were performed on day 0 (before surgery) and days 1, 3, 5, 7,10, and 14 post injury. Results: Nefopam (30 mg/kg) and nimesulide (5 mg/kg) blocked mechanical and thermal allodynia; the analgesic effects of morphine (5 mg/kg) lasted for 7 days. Allodynia was completely inhibited in combination with nonanalgesic doses of nefopam (10 mg/kg), nimesulide (1.25 mg/kg), and morphine (3 mg/kg). Conclusions: It seems that analgesic drugs used in combination, could effectively reduce pain behavior with reduced adverse effects.

The Attenuation of Pain Behavior and Serum COX-2 Concentration by Curcumin in a Rat Model of Neuropathic Pain

  • Zanjani, Taraneh Moini;Ameli, Haleh;Labibi, Farzaneh;Sedaghat, Katayoun;Sabetkasaei, Masoumeh
    • The Korean Journal of Pain
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    • v.27 no.3
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    • pp.246-252
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    • 2014
  • Background: Neuropathic pain is generally defined as a chronic pain state resulting from peripheral and/or central nerve injury. There is a lack of effective treatment for neuropathic pain, which may possibly be related to poor understanding of pathological mechanisms at the molecular level. Curcumin, a therapeutic herbal extract, has shown to be effectively capable of reducing chronic pain induced by peripheral administration of inflammatory agents such as formalin. In this study, we aimed to show the effect of curcumin on pain behavior and serum COX-2 level in a Chronic Constriction Injury (CCI) model of neuropathic pain. Methods: Wistar male rats (150-200 g, n = 8) were divided into three groups: CCI vehicle-treated, sham-operated, and CCI drug-treated group. Curcumin (12.5, 25, 50 mg/kg, IP) was injected 24 h before surgery and continued daily for 7 days post-surgery. Behavioral tests were performed once before and following the days 1, 3, 5, 7 after surgery. The serum COX-2 level was measured on day 7 after the surgery. Results: Curcumin (50 mg/kg) decreased mechanical and cold allodynia (P < 0.001) and produced a decline in serum COX-2 level (P < 0.001). Conclusions: A considerable decline in pain behavior and serum COX-2 levels was seen in rat following administration of curcumin in CCI model of neuropathic pain. High concentration of Curcumin was able to reduce the chronic neuropathic pain induced by CCI model and the serum level of COX-2.