• 한국토양비료학회지
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• 제40권1호
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• pp.31-35
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• 2007

농작물 안전생산 및 대기환경 개선을 위한 기초 자료로 활용하기 위하여 유해가스에 의한 농작물 피해원인을 구명하였다. 작물 피해현지에서 유해가스에 의한 피해증상을 조사하였으며, 작물체중 유해성분 함량을 분석하였다. 또한, 2004년 경북지역 농공단지에서 발생한 작물피해 사례에 대한 피해원인 구명을 위하여 조사지역의 피해발생 당시 기상자료 및 오염원에서의 배출가스 농도를 적용한 오염물질 확산을 제시하였다. 주요 작물의 암모니아가스 피해증상은 잎 끝으로부터 백색으로 고사하며, 저농도의 경우에는 적갈색 반점이 나타나는 특징을 보였고 화훼류의 경우에는 꽃보다 잎의 피해가 심하게 나타났다. 불소가스 피해증상은 잎의 선단이나 가장자리 부분에 나타나는 특성이 있다. 또한, 유해가스로 인한 작물피해 현지 사례에서 피해 지역의 아황산가스 등농도(等濃度) 분포를 조사한 결과, 조사지역은 발생원으로부터 발생된 아황산가스 영향을 받고 있으며, 특히 계절별로는 기상요인에 따른 여름철의 피해가 우려되었다.

• Archives of Reconstructive Microsurgery
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• 제23권1호
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• pp.33-35
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• 2014

Mondor's disease is an uncommon condition characterized by a palpable, cord-shaped structure, which causes pain when pressed. Its known pathophysiology is thrombophlebitis of the superficial venous system. Although reported repeatedly, its definite cause is unknown and various possible causes have been identified, including surgery, irradiation, infection, malignancy, and trauma. We diagnosed this case to be Mondor's disease of the antecubital venous system, probably due to thermal injury of the proximal tributaries of the basilic or cephalic vein. Risk of thermal injury to the skin flap or the portal site remains a common complication, and as thermal injury to the blood vessel might also be considered, attention must be given when suctioning the area near a large superficial vessel.

• 대한한의학회지
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• 제20권1호
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• pp.161-171
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• 1999

This study was performed to investigate the effect of complex formula(CKRG) consisting of Panax ginseng Radix rubra Koreana. Ganoderma, Cinnamomi Cortex, Glycyrrhizae Radix and Laminariae Thallus on brain ischemia and injury such as KCN-induced brain injury, forced brain ischemia, pulmonary thrombosis. The results were summarized as follows: 1. CKRG extracts showed a decrease of the duration of KCN-induced coma and showcd an increase in life expectancy. 2. CKRG extracts showed a decrease of neurologic grade in hind limb but did not affect neurologic grades in fore limb. Also. CKRG extracts showed a significant decrease of brain ischemic area and edema in MCA occlusion, 3. CKRG extracts showed a protective effect on pulmonary thrombosis induced by collagen and epinephrine. These data suggested that CKRG extracts could be applied to the protection of brain ischemia and injury.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제47권4호
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• pp.327-334
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• 2021

A transparotid approach, with a retromandibular or preauricular incision, is an alternative surgical approach for treating a subcondylar fracture and reducing the potential for complications such as injury to the facial nerves. However, retromandibular and preauricular incisions are both created far away from the parotid gland-dissection area. Thus, it is necessary to undermine the skin and retract it anteriorly to access the surgical field. Here, we introduce a modified approach wherein the incision allows for direct access to the fracture site. This approach may be adopted to shorten the incision length, reduce the retraction trauma at the surgical site, and help prevent injury to the facial nerve.

• Journal of Korean Biological Nursing Science
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• 제10권1호
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• pp.88-95
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• 2008

Purpose: The purpose of this study was to examine the effect of neuropathic pain by peripheral nerve injury on mass and Type I and II fiber cross-sectional areas on hindlimb muscles of the neuropathic pain model rat. Method: Adult male Sprague-Dawley rats (body weight 200-220 g) were assigned to one of two groups: a neuropathic pain group (n=7) that had a ligation of the left L5 spinal nerve, a control group (n=5), a naive rat without any procedures. Withdrawal threshold, activity, body weight and food intake were measured daily. At 8 days after neuropathic pain, all rats were anesthetized and the soleus and plantaris muscles were dissected from the both hindlimbs. Body weight, food intake, muscle weight and Type I and II fiber cross-sectional area of the dissected muscles were determined. Result: The neuropathic pain group showed a significant decreases (p<.05) as compared with the control rats, in diet intake, body weight, muscle weight and Type II fiber cross-sectional area of the left (affected side) soleus and plantaris muscles, and the right (unaffected side) muscle weight of plantaris and Type II fiber cross-sectional area of the soleus muscle. Conclusion: The hindlimb muscle atrophy occurs in both affected and unaffected side due to neuropathic pain by the peripheral nerve injury. The hindlimb muscle atrophy of the affected side is more pronounced than that of the unaffected side.

• 한국환경생태학회지
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• 제10권1호
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• pp.160-168
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• 1996

오대산 국립공원의 두로봉, 상왕봉 지구를 중심으로 분포하고 있는 천연림의 생육현황과 구조를 파악하고자, 이 지역에 19개의 방형구(10*10m)를 설치하여 식생을 조사하였다. 고산지대에 생육중인 주목과 분비나무를 대상으로 생육현황표를 이용하여 잎의 변색, 낙엽율, 줄기, 신초와 소지, 정아우세, 수세 등의 항목을 조사하였다. Cluster 분석한 결과 두 개의 군집(주목군지보가 신갈나무-사스래나무군집)으로 분류되었다. 수종간의 상관관계에서는 주목과 미역줄나무, 마가목; 분비나무와 신갈나무; 호랑버들과 부게꽃나무; 신갈나무와 참빗살나무 등의 수종들간에는 높은 저으이 상관이 인정되었고, 주목과 분비나무, 신갈나무 및 사스래나무; 분비나무와 미역줄나무 등의 수종들간에는 높은 부의 상관이 인정되었다. 조사대상지의 종다양도(H')는 1.2499~0.9608로 나타났다. 분비나무의 생육현황조사의 점수평균은 6.1점이며, 고사목의 비율이 10.9%였다. 주목의 생육현황조사의 점수평균은 17.3점이었고, 피해유형은 정단부를 비롯한 가지의 고사, 줄기의 동공, 줄기가 구부러지는 것 등의 세 가지였다.

• 대한임상독성학회지
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• 제19권2호
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• pp.100-109
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• 2021

Purpose: The purpose of this study was to investigate effect of N-acetylcysteine (NAC) on the injury of putative parvalbumin positive interneurons defined by molecular marker and hippocampal long-term potentiation (LTP), a marker of neural plasticity following acute carbon monoxide (CO) poisoning. Methods: Adult Sprague-Dawley rats were exposed to 1100 ppm CO for 40 minutes followed by 3000 ppm CO for 20 minutes. Animals received daily intraperitoneal injection of NAC (150 mg/kg) for 5 days after CO exposure. Changes in learning and spatial memory were evaluated by Y-maze test 5 days after the poisoning. In vivo LTP in hippocampal CA1 area was evaluated by using extracellular electrophysiological technique. Immunohistochemical staining were adopted to observe expressional damages of parvalbumin (PV) immunoreactive interneurons in the hippocampus following the poisoning. Results: Acute CO intoxication resulted in no changes in memory performance at Y-maze test but a significant reduction of LTP in the in hippocampal CA1 area. There was also a significant reduction of PV (+) interneurons in the hippocampal CA1 area 5 days after CO poisoning. Daily treatment of NAC significantly improved hippocampal LTP impairment and reduced immunoreactivity for PV in the hippocampus following the acute CO poisoning. Conclusion: The results of this study suggest that reduction of hippocampal LTP and PV (+) interneurons in the hippocampus is sensitive indicator for brain injury and daily NAC injections can be the alternative therapeutics for the injury induced by acute CO poisoning.

• 대한소아치과학회지
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• 제28권2호
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• pp.247-254
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• 2001

최근에는 외상이 증가되는 추세이며, 외상 받은 치아에 대한 조속한 치료와 올바른 처치를 위해선 외상성 손상에 대한 역학적인 면을 아는 것이 중요하다. 본 조사의 목적은 강릉대학교 치과병원 소아치과에 외상을 주소로 내원한 아동 120명(재외상환자 포함)에 대한 성별 및 나이에 따른 발생 빈도, 손상 받은 치아의 개수, 손상 유형, 원인 및 손상 받은 장소, 월별, 시간대별 빈도, 손상 받은 치아의 위치, 외상 후 내원까지의 경과시간 등에 대한 조사를 통해 외상에 대한 교육과 예방에 도움이 되고자 시행하였다. 1. 성별에 따른 발생 빈도는 1.6 : 1로 남아의 비율이 높았다. 2. 나이에 따른 발생 빈도는 2~4세와 8~10세 때 빈도가 높았다. 3. 외상시 손상 받은 치아의 개수는 1개일 경우(51.7%)가 많았다. 4. 손상의 유형은 유치에서는 치주조직 손상이 많았고, 영구치는 경조직과 치주조직의 손상 비율이 유사하였으나 유치에 비해 경조직 손상의 비율이 많이 증가하였다. 5. 손상의 원인은 두 치열 모두에서 낙상의 비율이 높았으며 영구치열에서는 스포츠에 의한 손상 비율이 증가하였다. 6. 손상 받은 장소로는 유치는 집(38.8%), 영구치는 거리(42.5%), 학교(35%)의 비율이 높았다. 7. 월별 발생 빈도는 7월에서 빈도가 가장 높았다. 8. 시간대에 따른 빈도는 유치는 오전, 영구치는 오후에 높은 빈도를 보였다. 9. 외상시 손상 받은 치아의 위치는 유치, 영구치 모두 상악, 특히 중절치의 비율이 높았다. 10. 외상 후 내원까지의 경과시간 절반 이상(59.2%)가 당일에 내원하였으며, 손상 정도가 심할 경우가 경미한 손상일 경우보다 당일 내원하는 경우가 많았다.

• 대한의생명과학회지
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• 제10권2호
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• pp.107-113
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• 2004

This study was conducted to investigate an effect of Mori Cortex in the cardiac injury following dermal scald burn in rats. Sprague-Dawley rats were induced scald bum (15％ of total body surface area). Heart was removed at 5 h postburn and examined with biochemical assay, ultrastructural observations and stereological analysis. The activity of serum aspartate aminotransferase and creatinine was increased at 5 h postburn compared with them of control. Administration of heat extracts of Mori Cortex after scald burn inhibited the production of KC (neutrophil chemoattractant cytokine) and increased the activity of protein kinase C (PKC) in heart tissue. The activity of myeloperoxidase (MPO) in heart tissue was decreased both at 5 h postburn and in case of Mori Cortex administration after scald burn. Ultrastructurally, many contraction bands and separation of intercalated disk induced by scald burn were decreased by administration of heat extracts of Mori Cortex. In stereological analysis, administration of Mori Cortex after scald burn resulted the volume densities of myofibril and mitochondria were increased compared with them of burn control. These data suggest that Mori Cortex may be a useful stuff to the range of available treatments for cardiac injury induced by skin burn.

• 동의생리병리학회지
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• 제22권2호
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• pp.431-437
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• 2008

Sengmaek-san(Shengmai-san; SMS) is used in oriental medicine as one of the key herbal medicine for treating diverse symptoms including cardiovascular and neurological disorders. In the present study, the effects of SMS on axonal regeneration were investigated in the rat model given sciatic nerve injury. SMS treatment enhanced axonal regrowth into and the number of non-neuronal cells in the distal area after crush injury. GAP-43 protein levels were increased in the injured sciatic nerve compared to intact nerve and further upreguated by SMS treatment. GAP-43 protein was increased similarly in the dorsal root ganglion (DRG) at lumbar 4 - 6 by nerve injury and SMS treatment, suggesting GAP-43 induction at gene expression level. SMS-mediated increase in phospho-Erk1/2 protein was observed in the DRG as well as in the injured nerve implying its retrograde transport into the cell body as the process of lesion signal transmission. The present findings suggest that SMS may be involved in enhanced axonal regeneration via dynamic regulation of regeneration-associated proteins.