• Korean Journal of Veterinary Research
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• v.22 no.2
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• pp.233-237
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• 1982

Pathological studies on 6 milk goats administrated with urea were carried out to determine the effects of acute and chronic poisonings on the animal. Clinical signs appeared about 10 minutes after ingestion of the urea and they consisted chiefly in dullness, staggering, uncontrolled urination, dyspnea, frothy salivation, bloating, muscular tremor, humping of back and tetanic spasms. Macroscopic lesions were failure of blood clot, frothy and bloody contents in the highly congested respiratory tract, pulmonary edema, rumenitis and abomatitis accompanying with petechiation of the upper small intestine. Microscopically, the liver showed vacuolar degeneration, fatty change and areas of necrosis and partial proliferation of the interlobular connective tissues in chronic crises. The renal epithelium displaced vacuolar degeneration, necrosis and hyaline casts in their lumens. In the lungs, there were hyperemia, edema, hemorrhages, and acute catarrhal bronchitis. Neuronal degeneration and necrosis in the central nervous system, catarrhal rumenitis, abomatitis, doudenitis and myocardial hemorrhage were also demonstrated.

• Tuberculosis and Respiratory Diseases
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• v.43 no.5
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• pp.774-778
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• 1996

Pulmonary blastoma is a primary lung tumor consisting of a mixture of immature embryonal-like mensenchymal and epithelial components and in some areas resemble embryonal lung tissue of up to 3-4 months gestational age. The tumor was first described in 1945 by Barren and Barmard and again in 1952 by Barmard, who named it an embryoma of the lung which resembled fetal lung histologically, with glandular structures lined by non-ciliated epithelium and a surrounding stroma resembling mesenchyme. In 1961 Spencer renamed them Pulmonary blastoma as he believed they represented neoplasms similar in pathogenesis to nephroblastoma. The prognosis of these rumors is poor, and the clinical course is not readily predicted from histological appearance. Untill now, more than one hundred cases have been reponed in the literature in the word and there is no report in Korea. We report a case of biphasic pulmonary blastoma, which ruptured spontaneously, in a 31-year-old young man who was presented as sharp pain under the right subscapular area.

• Tuberculosis and Respiratory Diseases
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• v.47 no.3
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• pp.389-393
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• 1999

Endometriosis is defined as an extrauterine growth of endometrial tissue and it is primarily limited in the pelvis but it can also occur in the pleural cavity as well as pulmonary parenchyme. The diagnosis of pulmonary endometriosis is usually based on the clinical history of recurrent hemoptysis in association with menstrual cycle and by histopathologic confirmation of endometrial tissue in the lung parenchyme. Pulmonary endometriosis was first reported by Lattes in 1956. and dozens of cases have been reported so far. We experienced a case of 25 year old single woman with a history of hemoptysis in association with her menstruation. The bleeding focus was localized with chest CT scan and repeated fibrooptic bronchoscopy and basal segmentectomy of the right lower lobe was performed. The resected specimen shows endometrial stroma and glands of early proliferative phase with respiratory epithelium on the laterobasal bronchus. Her postoperative course was uneventful with no recurrence of hemoptysis during 6 months of follow-up in the outpatient clinic.

• Tuberculosis and Respiratory Diseases
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• v.52 no.5
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• pp.506-518
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• 2002

Background : There have been several studies showing that angiotensin II and the angiotensin converting enzyme (ACE) contribute to the activation of fibroblast including the pulmonary fibrosis, and apoptosis of the alveolar epithelium in idiopathic intersititial pneumonia. This study was performed to identify the relationship between the serum angiotensin II, ACE and the pulmonary function test (PFT), the dyspnea score, and the cell fraction of the bronchoalveolar lavage fluid(BALF). Materials and Methods : Twenty three patients with idiopathic interstitial pneumonia from March, 1999 to October, 2001 at Gachon medical school were enrolled in this study. They were divided into IPF(UIP) (16) and NSIP (7) groups. Twelve of the idiopathic interstitial pneumonia patients (UIP : 5, NSIP : 7) were diagnosed by an open lung biopsy, 11 of IPF patients were diagnosed by the American Thoracic Society (ATS) diagnostic criteria. The PFT values, dyspnea score, serum ACE and angiotensin II were measured, and a bronchoscopy was performed to obtain the BALF. Results : Of all the patients, 7 were in the normal range and 14 showed an increase in the serum level of angiotensin II. In terms of the serum ACE level, 14 patients had an increased level. The DLCO% of the angiotensin II in increased group was significantly lower than the not-increased group (p=0.021). Other factors did not correlate with the serum ACE or the angiotensin II increased group and not-increased group. Conclusion : These results suggest that an increased angiotensin II serum level may be associated with increase in the of alveolar capillary block in the progression of pulmonary fibrosis in idiopathic interstitial pneumonia.

• Tuberculosis and Respiratory Diseases
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• v.43 no.5
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• pp.805-811
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• 1996

Congenital cystic adenomatoid malformation of the Lung(CCAM) is characterized by anomalous fetal development of terminal respiratory structures, resulting in an adenomatoid proliferation of bronchiolar elements and cystic formation. CCAM was first described and differentiated from other cystic lung disease in the English literature by Ch'in and Tang in 1949. CCAN is a rare, potentially lethal form of congenital pulmonary cystic disease and the salient features of lesion are an irregular network of terminal respiratory bronchiole-like structures and macrocysts variably lined by pseudostratified ciliated columnar epithelium and simple cuboidal epithelium. Adult presentation of CCAM of the lung is so rare that only 9 cases have been reported in the literature of date. The pathogenesis of CCAM remains disputed and reseachers have variously proposed that the lesion represents a developmental anomaly, hamartoma, or a fonn of pulmonary dysplasia. Van Dijk and Wagenvoort divided CCAM into three subtypes : cystic, intermediated, and solid. These correspond to types I, II, and III of Stocker. In adults, the evaluation of cystic or multi cystic lung disease requires consideration of a differential diagnosis including the acquired lesions of lung abscess, cavitary neoplasm or inflammatory mass, bullous disease, bronchiectasis, and postionflammatory pneumatocele. Congenital lesions such as sequestration, bronchopulmonary-foregut anomalies, and bronchogenic cyst are also encounted. The definitive treatment for CCAM is complele removal of the involved lobe. Panial lobectomy leads to multiple complications, including severe post-operative infection. We report a case of CCAM in a 14-year-old female presentated with a pneumothorax and large bullae, who was treated by surgical remove of the involved lobe.

• Applied Microscopy
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• v.29 no.3
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• pp.291-301
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• 1999

The differentiation and ultrastructural characteristics of type II pneumocyte was investigated using 7 cases of human fetal lungs from 9 to 20 weeks of gestation by transmission electron micropscopy. The result obtained were as follows. 1. From the pattern of epithelium, type II pneumocyte was not discernable, but with the gradual development of gestation, the epithelium of the future pulmonary alveoli was transformed from pseudostratified columnar into simple cuboidal epithelium after 15 weeks of geatation. 2. The multilamellar body very specific to type II pneumocyte was observed at first at 9 weeks of gestation. Besides, another characteristics of the cell were also observed such as cytoplasmic inclusion body, granular inclusionbody,multivesicularinclusionbodyanddensebody. 3. The number and size of multilamellar body increased, but those of other inclision bodies decreased at 19 and 20 weeks of gestation. In summary, type II pneumocytes (or precursor cells) with multilamellar body and another characteristic inclusion bodies were observed in the human fetal lungs from 9 weeks of gestation. And so, it is suggested that the differentiation of type II pneumocyte starts at or before 9 weeks of gestation.

• Tuberculosis and Respiratory Diseases
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• v.53 no.6
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• pp.662-672
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• 2002

The lungs are frequently the site of adverse drug reactions because of their higher oxygen concentration, the distinctive properties of the pulmonary circulation, and the close proximity of the alveolar epithelium to the blood. Amiodarone, an iodinated benzofuran derivative, is an effective antiarrhythmic drug commonly used for refractory tachyarrhythmia. However, it has a wide range of adverse effects, the most serious of which is lung disease. Most patients present with the insidious onset of dyspnea and a nonproductive cough, and generally recover after withdrawing the drug. We recently experienced four fatal cases of amiodarone pulmonary toxicity. Therefore, we discuss these unusual drug-induced pulmonary toxicity cases with a review of the relevant literature.

• The Journal of Korean Oriental Chronic Disease
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• v.10 no.1
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• pp.1-20
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• 2005

Background and Objective: The importance of the presence of eosinophils in the airways of patients with fetal asthma has long been recognized, but the mechanism by which these cells are recruited and retained in the lung are only now being elucidated. Eotaxin is a potent and specific eosinophil chemoattractant that is mobilized in the respiratory epithelium after allergic stimulation. Material and Methods: We used water extracts of Liripois Tuber and pulmonary epithelial cell lines A549(human typeII-like epithelial cells) and human eosinophils. We estimated cytotoxic effects of Liripois Tuber via MTS assay, and estimated the effects of Liripois Tuber on chemokines from prestimulated A549 cells by sandwich ELISA and RT-PCR. We conducted chemotaxis assay on prestimulated eosinophils treated with Liripois Tuber. Result: In this study we demonstrated that $TNF-{\alpha}$, IL-4 and $IL-1{\beta}$ induced the accumulation of chemokines mRNA in the pulmonary epithelial cell lines A549 in dose-dependent manner. Chemokines were inhibited by Liripois Tuber in dose-dependent manner. The eosinophil migration was inhibited at high concentration of Liripois Tuber. Conculusion: These findings indicate that the supression of the expression of chemokines can be accomplished by Liripois Tuber treatment, raising the possibility that Liripois Tuber might be of therapeutic value in diseases such as asthma.

• Tuberculosis and Respiratory Diseases
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• v.46 no.6
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• pp.775-785
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• 1999

Background : The herbicide paraquat can cause severe lung injury and fibrosis in experimental animals. In this study we have investigated the changes in lung endothelin-1(Et-1) levels and immunohistochemical localization in relation to treatment with cyclophosphamide and methylprednisolone in paraquat induced pulmonary fibrosis in guinea pigs. Material and methods : 29 male Hartley guinea pigs were divided into 4 groups. Group I was normal control. Paraquat was instilled into the lung of guinea pig of group II, III and IV unilaterally. Group II was treated with cyclophosphamide and methylprednisolone. Group III was treated with methlprednisolone. Group IV was not treated. The degree of fibrosis was evaluated by H-E stains and Masson's trichrome stains and cell activity was assessed by Et-1 immunohistochemical stains. Statistical evaluation was performed using the Kruskawallis oneway analysis. Results : Paraquat induced an increase in numbers of fibroblasts and total amount of lung collagen in Group IV compared to the normal controls. There was no significant difference in total numbers of fibroblasts between any of paraquat instilled groups, but there was significant increase in total amount of collagen in Group IV compared to group II and III (p<0.05). The treatment of cyclophosphamide and methyprednisolone suppressed the growths of both fibroblasts and collagen, but this suppression was stastically significant only in the case of collagen Et-1 immunoreactivities of bronchial epithelium, type II pneumocytes, endothelial cells and fibroblast in group II and III were decreased compared to those in group IV. Conclusion : These results demonstrate that Et-1 is an important contributing factor in the pathogenesis of pulmonary fibrosis. Et-1 is synthesized and released by bronchial epithelium, Type II pneumocyte, endothelial cells, alveolar macrophages and fibroblasts. Especially they are associated with alveolar macrophage and fibroblasts. We conclude that combined therapy of cyclophosphamide and methylprednisolone are more effective in the control of Et-1 expression and collagen deposition.

• Korean Journal of Veterinary Research
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• v.22 no.2
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• pp.221-232
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• 1982

This paper dealt with the pathological and clinical findings on the experimentally induced rodenticide (fluoroacetate, zinc phosphide, thallium sulfate, coumarin) and NaCN poisoning of ruminants (Holstein cattle and/or Korean native goat) for the purpose of the diagnosis in the accidental rodenticide poisoning of cattle. The results observed are summarized as follows: Fluoroacetate poisoning (cattle and goat): in the clinical signs, there were depression, convulsion, dyspnea, groan, grinding of the teeth, vomiting, opisthotonus and post-mortem tympany. In the macroscopical findings, the blood was more or less poor coagulative and dark red, bloody fluid with foam in the trachea, hyperemia and hemorrhage of tracheal mucosa and lung, cloudy swelling and hyperemia of kidney, epicardial hemorrhage(cattle), and hyperemia of abomasum, intestine and brain were observed. In the microscopical findings, there were pulmonary edema and hemorrhage, necrosis of convoluted tubular epithelium and interstitial hemorrhage of kidney, focal coagulative necrosis of myocardium, hemorrhage of pancreas and spleen, dilatation of Virchow-Robin space and hyperemia of brain, and necrosis with desquamation of mucosal epithelia of abomasum and upper small intestine. In the histological lesions of the liver, lobular peripheral hyperemia, centrilobular necrosis and cytoplasmic inclusion bodies of the hetatic cells were observed. The cytoplasmic inclusion body of the hepatic cells was not seen in the affected goat, but hydropic degeneration of the hepatic cells was marked. Zinc phosphide poisoning (cattle and goat): clinically, the affected animals died in recumbent position after ataxia, dyspnea and convulsion. In the macroscopical findings, hyperemia and hemorrhage of lung, cloudy swelling and hyperemia of liver and kidney, hemorrhage of spleen (cattle), and catarrh of abomasum and small intestine were observed. In the microscopical findings, necrosis of the convoluted tubular epithelium and hyperemia of kidney, hemorrhage of spleen, hyperemia of lung, hyperemia or hemorrhage of heart, cloudy. swelling and fatty changes of hepatic cells, dilatation of hepatic central vein, hyperemia of brain, and catarrh of abomasal and small intestinal mucosae were observed. Thallium sulfate poisoning (cattle): in the macroscopical findings dark red color of blood, hyperemia and hemorrhage of lung, bloody fluid with foam in the tracheal mucosa, petechiae of tracheal mucosa, cloudy swelling and hemorrhage of liver, necrotic lesions and hemorrhage of renal cortex and epicardial hemorrhage were observed. In the microscopical findings, severe hemorrhages of the lung, cloudy swelling and necrosis of hepatic cells, hyperemia and hemorrhage of liver, focal coagulative necrosis of mycordium, necrosis of the convoluted tubular epithelium and hyperemia of kidney, hyperemia and hemorrhage of spleen and dilatation of Virchow-Robin apace in brain were observed. Coumarin poisoning (goat): the poisoned animals died in the state of groan and depression. In the macroscopical findings, poor coagulation of blood, hemorrhage of lung, cloudy swelling and severe hemorrhages of liver, cloudy swelling and hemorrhage of kidney, abomasal hemorrhage, catarrh of small intestine, and hyperemia and hemorrhage of the other organs were observed, In the microscopical findings, hyperemia and hemorrhage of lung and kidney, cloudy swelling of the convoluted tubular epithelium of kidney, severe hepatic hyperemia, cloudy swelling and hydropic degeneration of heptatic cell, and hyperemia and hemorrhage of brain and spleen were observed. NaCN poisoning (cattle and goat): clinically, there were convulsion, severe dyspnea, paresis of hind limb, depression and then rigor of four limbs. In the macroscopical findings, bright red color of blood, hyperemia and bright and red tinge of lung cloudy swelling of kidney and liver, and hyperemia of abomasum were observed. In the microscopical findings, cloudy swelling and hydropic degeneration of hepatic cell, hyperemia and edema of lung, necrosis and degeneration of the convoluted tubular epithelium and hemorrhage in kidney, dilatation of Virchow-Robin space of brain and hemorrhage of spleen were observed.