• Tuberculosis and Respiratory Diseases
• /
• 제64권4호
• /
• pp.318-323
• /
• 2008

본 증례는 2년간 크기의 변화가 없다가 천천히 자라는 고립성 폐결절을 경피부 흉강 세침생검을 시행하여 분화도가 좋은 원발성 폐선암을 진단하였고, 근위 림프절 절제를 포함한 좌상엽절제술을 시행하였다. 저자들은 비록 폐결절 크기의 배가시간이 느리며, 알려진 악성의 위험인자가 거의 없어 양성의 가능성이 높은 폐결절이라 하더라도, 조기에 조직검사 를 포함한 적극적인 검사와 치료가 필요하며, 조직검사가 어려울 경우 크기 변화를 예측하기 위해서는 흉부전산화단층촬영으로 추적관찰 하는 것이 필요 하다고 사료되어 이를 문헌고찰과 함께 보고하는 바이다.

• The Korean Journal of Physiology
• /
• 제2권2호
• /
• pp.63-73
• /
• 1968

It is well known that mammalian alveolar membrane is covered with a very thin layer of surfactant film which characteristically reduces surface tension of alveolar membrane, and maintains alveolar stability. Since Clements in 1957 demonstrated that the surfactant is extractable by mincing the lung tissue in saline, various studies on the subject have been succeeded by many workers. However, the effect of radiation on the surfactant is not well clarified. Present study was attempted to observe the effect of x-irradiation on the activity of surfactant in rabbits. X-ray in dose of 300 r, 600 r or 900 r was irradiated to the chest of rabbits. The lung was removed from normal or irradiated rabbits sacrificed by arterial blood shedding, and lung-saline extract, adding 3 grams of lung tissue to 50 mili-liters of saline, was prepared by means of Vertis homogenizer. Tension-area diagram of lung extract was recorded automatically by a modified Langmuir-Wilhelmy balance with a synchronized recording system designed in this department. The surface tension of lung extract was measured at 1st, 2 nd, 3 rd, 7 th and 15 th post-radiation day in 300 r irradiated group, at 3 rd, 7 th and 15 th post-radiation day in 600 r irradiated group, 3 rd and 7 th post-radiation day in 900 r irradiated group respectively. For the histo-pathological study, lung tissue preparations were made in all irradiatiated groups on the day of experiment and in normal group. The results obtained are summarized as follows: 1. The minimal surface tension, maximal surface tension and stability index of normal rabbits lung extracts were 7.68 dynes/cm, 38.84 dynes/cm, and 1.39 respectively. 2. The activity of surfactant was depressed prominently by x-irradiation. However, increase in the dose of x-irradiation did not show any significant change in the degree of surfactant activity suppression. The most marked depression in surfactant was observed at the third post-radiation day in all irradiated groups. 3. Activity of surfactant depressed by x-irradiation showed a tendency of recovering to normal on 15 th post-radiation day. 4. The tendency of change in activity of surfactant following x-irradiation was somewhat correlative with histo-pathological changes. But the degree of depression of surfactant by x-irradiation did not correspond to the degree of histo-pathological changes, and recovery of lung tissue from radiation damage, tissue edema and congestion, seemed to be followed by restoration of surfactant activity. 5. The width of the tension-area diagram was measured at the surface area of 40% in lung extract of normal and x-irradiated rabbits. And it was found that the changes of the width corresponded well with that of minimum surface tension and of stability index in all normal and x-irradiated groups.

• 환경생물
• /
• 제31권4호
• /
• pp.486-492
• /
• 2013

최근 국내의 양식 메기에 표피 박리와 근육 괴사를 특징으로 하는 새로운 질병이 발생하였다. 그 폐사율은 낮으나 질병으로 인한 상품가치의 저하로 경제적 손실이 크다. 병어로부터 원인균을 분리하고 자연감염어와 인위감염어의 병리학적 변화를 관찰하였다. 원인균은 Aeromonas veronii로 동정되었으며, 원인균을 건강어에 인위감염시켜 폐사 및 증상의 발현을 매일 관찰하였다. 인위감염된 어류의 증상은 자연감염어와 유사하였으며 원인균을 감염시킨 후 7일 이내에 모두 폐사하였다. 병어의 조직표본을 제작하여 관찰한 결과, 자연감염어의 간, 비장, 신장의 울혈 및 간세포 변성과 비장 협조직의 초자적변성이 관찰되었으며, 특히 심장에서 염증성 변성과 세균응집체가 관찰되었다. 소화관에서의 울혈과 점막고 유층의 섬유화 현상도 특징적이었다. 자연감염어에 비해 약한 경향이지만 인위감염어의 조직학적 변화도 관찰되었으며, 소화관에서의 조직학적 변성은 관찰되지 않았다.

• 대한의용생체공학회:의공학회지
• /
• 제25권1호
• /
• pp.49-55
• /
• 2004

본 논문은 쥐의 악성종양에 대한 광역학적 치료효과를 조사한 연구이다. 실험방법으로서는 쥐를 대조군과 대상군의 두 그룹으로 나누어 HepG2 and Hela cell line을 주입하여 암조직을 배양하였다. 쥐의 악성종양에 포토포린을 30시간 전에 주입하고 630nm와 650nm의 레이저를 적용하였다. 광역학적 치료후에 쥐의 두 그룹에 대한 악성종양크기, 괴사율, 악성종양 성장률, 악성종양조직의 병리학적 변화를 분석하였다. 실험결과 조직에서 악성종야세포의 괴사를 보였으며, 광조사 시간과 광량에 따라 악성종양 크기가 줄어들고 악성종양의 괴사변화를 나타냈다. 그러나 630nm와 650nm의 파장차이에 대한 악성종양의 변화의 차이는 발견할 수 없었으며 다른 정상조직에서의 손상도 발견되지 않았다.

• 동의생리병리학회지
• /
• 제25권2호
• /
• pp.176-184
• /
• 2011

Modern treatment of diabetes with hypoglycemic agents have been resulted the Pathological changes. Therefore, the pattern identifications of Korean traditional medicine also have to change. The aim of this study is to learn about the recent change of the pattern identifications on diabetes mellitus. Chinese traditional medicine is more free than us in medical activities because of the combination of Western and Eastern medical treatment and so there has been much published studies. Therefore, 35 papers that were searched from 2003 to 2010 in China by the keyword '糖尿' & '消渴' through the date base system of Kisti & Cnki were selected and analyzed. 35 review papers were composed of 28 observing academically and 7 clinical research studies. The combination of Western and Eastern Medical treatment has been effective than Western Medical treatment alone and the stasis(瘀血) acted as an important etiology on Diabetes mellitus. In the treatment of diabetes the stasis should be considered consistently from the onset.

• 한국산업보건학회지
• /
• 제24권3호
• /
• pp.321-329
• /
• 2014

Objectives: This study was performed to produce data on the pulmonary toxicity of neodymium oxide($Nd_2O_3$) by intratracheal instillation. Methods: Two groups of rats were exposed to neodymium oxide by intratracheal instillation with doses of 0.5 mg and 2.0 mg, respectively. At two days, four weeks and 12 weeks after exposure, body weight change, organ weight change and histopathological change were observed. At 12 weeks after exposure, lung function change was measured. Results: The body weight of rats in the high concentration group decreased after 12 weeks by 4-5% compared with the control group. At four weeks and 12 weeks after the administration of neodymium oxide, the absolute weight of the lungs of the high concentration group were significantly increased when compared with the control group(p<0.05). At 12 weeks after the injection of neodymium oxide, breath frequency and respiratory minute volume were increased, but inhalation time and expiratory time were decreased. Bronchiolar epithelial hyperplasia, alveolar type II cell hypertrophy/hyperplasia and foreign body granulomatous inflammation were observed in the high exposure group. Conclusions: Body weight decrease, lung absolute weight and breath frequency increase, and pathological lung change were all observed. We found that pulmonary toxicity of neodymium oxide nanoparticles by intratracheal instillation could be confirmed.

• Restorative Dentistry and Endodontics
• /
• 제10권1호
• /
• pp.31-42
• /
• 1984

The toxic effect of adhesive resins on the dog's pulp tissue was studied with 70 teeth from 5 dogs. The experimental materials were Clearfil, a mixture of Clearfil with calcium hydroxide powder, Panavia-EX, and a mixture of Panavia-EX with calcium hydroxide powder. As a control group, calcium hydroxide powder was used. Each material was placed on the pulpotomized tissue surface. After 3 days, 1, 2,4, and 6 weeks, the teeth and apical tissue were processed routinly and stained with hematoxylin and eosin. Pathological tissue changes due to the toxicity of adhesive resins were observed by light microscope, and the pH of Panavia-EX and the Bonding agent of Clearfil were measured. Following were the results; 1. In the group of calcium hydroxide powder, slight inflammatory change was observed in the pulpotomized surface and adjacent pulp tissue on 3 day. 1 week case showed incomplete dentin bridge. The remaining pulp tissue was normalized according to the days elapsed. 2. In the group of Clearfil, early inflammatory change revealed in the superificial portion of the remaining pulp tissue on 3 day. The inflammation spreaded over the total pulp tissue and partial necrosis was observed in 1 week and 2 week cases. Total necrosis of pulp tissue and moderate inflammatory change at the apical tissue was noticed in 4 week and 6 week cases. 3. In the group of Panavia-EX, moderate inflammatory change appeared in the superficial pulp tissue on 3 day, and severe inflammatory change over all pulp tissue found in 1 week case. Pulp necrosis was obvious in 2 week case. 4 week and 6 week cases were totally necrotized up to the periapical tissue. 4. In the groups of mixtures with calcium hydroxide powder, the pulp tissue destruction was retarded, compared with the groups of Clearfil and Panavia-EX. 5. Panavia-EX was more destructive than Clearfil. 6. The acidity of freshly mixed Bonding agent of Cleafil was pH 4.0, and that of Panavia-EX was pH 2.0.

• Journal of Yeungnam Medical Science
• /
• 제31권2호
• /
• pp.127-130
• /
• 2014

Autoimmune thyroiditis is the most common cause of hypothyroidism in the world. It is characterized clinically by gradual thyroid failure, goiter formation, or both, because of the autoimmune-mediated destruction of the thyroid gland. Renal involvement presenting proteinuria in autoimmune thyroiditis is not uncommon, occurring in 10% to 30% of the cases. Glomerulonephropathy associated with autoimmune thyroiditis, however, is a rare disease. Most reports of autoimmune thyroiditis with glomerulonephropathy have demonstrated a mixed pathological morphology and have been predominantly associated with membranous glomerulopathy. The case of minimal-change disease associated with thyroiditis presenting acute kidney injury is a rare disease that has not been reported in South Korea. Reported herein is the case of a 16-year-old man diagnosed with Hashimoto's thyroiditis, with minimal-change disease presenting acute kidney injury. He revealed hypothyroidism, proteinuria, and impaired renal function. Renal biopsy showed minimal-change disease and minimal tubular atrophy. The patient was treated with thyroid hormone, and his renal function and proteinuria improved. Therefore, for patients with autoimmune thyroiditis presenting unexplained proteinuria, glomer-ulonephropathy should be ruled out. Conversely, for patients with glomerulonephropathy and persistent proteinuria despite proper treatment, thyroid function and antibody tests should be performed.

• 대한치과의사협회지
• /
• 제50권1호
• /
• pp.6-12
• /
• 2012

As in all other parts in the body, oral tissue also undergoes dramatic changes with increasing age. Since these changes occasionally go beyond physiological scope, which may result in pathological changes, it is essential for dentist to understand changes caused by normal aging process. With increasing age, tooth morphology and occlusion also varies, especially loss of hard tissue, which is taking place in lifelong time, occurs as a result of tooth wear. When this loss of hard tissue is presented rapidly or excessively, functional and esthetical problems are raised, resulting in lowering quality of life of patient as well as making dental treatment for oral rehabilitation even more complex. Therefore, based on understanding of change in occlusion with increasing age, strategic approaches for maintenance of oral health in both functional and esthetic aspect are required as appropriate restoration and maintenance for progressive tooth wear enables desirable occlusal relationship. Carefully planned-restorative treatment in accordance with changed occlusal relationship is also required in the same context. Instead of taking changes in oral tissue as only a consequence of ageing, it is vital to educate patient and his or her guardian, assuring maintenance of oral hygiene and regular dental check-up are of utmost importance for improved oral health.

• 한국식품영양학회지
• /
• 제23권4호
• /
• pp.435-439
• /
• 2010

The aim of this study was to evaluate the anti-inlfammatory effects of Glycyrrhiza glabra Linne extract on ulcerative colitis induced by 3% dextran sulfate sodium in mice. The experimental animals were divided into six groups: control(normal), DSS-induced colitis(control), 1 mg/kg, 10 mg/kg, and 100 mg/kg of Glycyrrhiza glabra Linne extract, and 150 mg/kg 5-aminosalicylic acid(5-ASA)(positive control). We evaluated the pathological disease activity index(DAI), change in weight, colon mucosa damage and myeloperoxidase(MPO) in colon mucosa. Treatment with 10 mg/kg and 100 mg/kg of Glycyrrhiza glabra Linne extract led to significant loss of body weight, the decrease of MPO activity and clinical symptoms such as DAI and histological change. In particular, 100 mg/kg Glycyrrhiza glabra Linne extract led to markedly greater improvement than 150 mg/kg 5-ASA treatment. These results suggest that Glycyrrhiza glabra mediated anti-inflammatory action on colorectal sites may be a useful therapeutic approach to ulcerative colitis.