• Title/Summary/Keyword: submucosal glands

검색결과 16건 처리시간 0.034초

Regulation of depth and composition of airway surface liquid

  • J. H. Widdicombe;S. J. Bastacky;D. X.Y. Wu;Lee, C. Y.
    • 한국응용약물학회:학술대회논문집
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    • 한국응용약물학회 1996년도 춘계학술대회
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    • pp.119-130
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    • 1996
  • We review the factors which regulate the depth and composition of the human airway surface liquid (ASL). These include secretion from airway submucosal glands, ion and fluid transport across the surface epithelium, goblet cell discharge, surface tension and transepithelial gradients in osmotic and hydrostatic pressure. We describe recent experiments in which we have used low temperature scanning electron microscopy of rapidly frozen specimens to detect changes in depth of ASL in response to submucosal gland stimulation. We also present preliminary data in which X-ray microanalysis of frozen specimens has been used to determine the elemental composition of ASL.

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고양이 기관점막하분비선에 있어서의 Substance P(SP)양성신경섬유의 분포 (Distribution of Substance P(SP) Immunoreactive Nerve Fibers in the Tracheal Submucosal Glands of Cats)

  • 나기상
    • 대한기관식도과학회:학술대회논문집
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    • 대한기관식도과학회 1993년도 제27차 학술대회 초록집
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    • pp.68-68
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    • 1993
  • 고양이 기관점막하분비선에 있어서의 SP양성신경섬유의 분포를 조사하기 위하여 면역조직화학 및 면역전자현미경적 방법을 이용하였다. SP양성신경섬유가 선주위에 망상구조를 이루고 있었으며, 많은 수의 varicosity가 acini 및 secretory tubules의 기저막내에 존재하고 있었다. 이들 모든 선내 varicosity는 장액선세포, 점액선세포, 근상피세포 등과 밀접한 공간적 접촉을 보여주고 있었다. 그 결과 고양이 기관점막하분비선에서 SP에 의한 점액분비는 근상피세포에 의한 선수축반응과 장액선세포 및 점액선세포의 직접적인 자극에 의할 것으로 생각한다.

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Primary Epithelial Myoepithelial Lung Carcinoma

  • Cho, Seong Ho;Park, Sung Dal;Ko, Taek Yong;Lee, Hae Young;Kim, Jong In
    • Journal of Chest Surgery
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    • 제47권1호
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    • pp.59-62
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    • 2014
  • Primary epithelial-myoepithelial carcinoma (EMC) of the lung is an extremely rare neoplasm that originates from submucosal bronchial glands and has been found in the salivary glands, breast tissue, and sweat glands. However, only a few cases in the respiratory tract have been identified. In the literature, most pulmonary EMCs have been reported to have developed endobronchially although a few EMC cases have been presented as intraparenchymatous tumors. We have identified a case of primary EMC that developed in the peripheral lung parenchyma.

식도 선낭포종양치험 1예 (Adenoid Cystic Carcinoma of the Esophagus - A case report -)

  • 임승균
    • Journal of Chest Surgery
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    • 제20권4호
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    • pp.865-868
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    • 1987
  • Adenoid cystic carcinoma of the esophagus has been relatively an uncommon, slow growing tumor. A 51 year-old man patient had a tumor in the lower third of the esophagus which was incidentally found during an examination for UPPER C-I series, and resected successfully without Thoracotomy. The tumor exhibited a polypoid appearance covered by normal esophageal epithelium, localized entirely in the submucosal layer of the esophagus and morphologically identical to adenoid cystic carcinoma in the salivary glands.

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점막표피양종양 -1례 보고- (Mucoepidermoid Cancer -A Report of One Case-)

  • 은종화
    • Journal of Chest Surgery
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    • 제27권6호
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    • pp.486-488
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    • 1994
  • The mucoepidermoid cancer is a tumor arising in the bronchial submucosal glands that shows an intimate admixture of glandular element and sheets of cell with or no definite squamous differentiation. This rare tumor is usually located in lobe and bronchi and occasionally in the trachea. This tumor presents with symptoms of bronchial irritation or obstruction, often of several years duration. The treatment is complete resection with use of bronchoplastic techniques.Low grade tumor have a good prognosis with adequate resection. We experienced a case of mucoepidermoid cancer arising from superior segment of left lower lobe, which was treated with Lt.lower lobectomy.

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닭에 있어서 Pepsinogen 과립(顆粒)의 분포(分布), 분필(分泌) 및 생성(生成)에 관한 광학(光學) 및 전자현미경적연구(電子顯微鏡的硏究) (Light and Electron Microscopic Studies on Distribution, Secretion and Formation of Pepsinogen Granules in Chickens)

  • 박준형
    • 대한수의학회지
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    • 제15권2호
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    • pp.223-231
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    • 1975
  • In mammals there are two distinct cellular units of the gastric glands which are responsible for the secretion of acid and pepsin respectively, namely, the parietal cells for acid and the peptic or chief cells for pepsin. On the other hand, the bird does net have separate parietal and chief cells in the glandular stomach. There exist only a single cell type in the asian gastric secretory-glands. In spite of this single cell type, however, variation in pepsin and acid secretion can he seen. Present study was conducted to know distribution, secretion and formation of the pepsinogen granules in chicken and rat stomach which observing by light and electron microscope. 1. In chicken, the pepsinogen granules are distributed in all submucosal gland cells and yet there are no distinction of parietal and chief cells. In rat, the pepsinogen granules are distributed in chief cells which lined the lower two-thirds of the gastric tubles and the parietal cells occupy upper third of the tuble. 2. Carbachol markedly stimulates the secretion of pepsinogen granules in chiken and rat, but Histamine is slightly. 3. After Histamine and Carbachol treatment, the pepsinogen granules are formated continuously and reaccmulated as control after 3 to 4 hours.

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기관지 천식에서의 기도 개형 (Airway Remodelling in Asthma)

  • 임대현
    • Clinical and Experimental Pediatrics
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    • 제48권10호
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    • pp.1038-1049
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    • 2005
  • Asthma is characterized by a chronic inflammatory disorder of the airways that leads to tissue injury and subsequent structural changes collectively called airway remodelling. Characteristic changes of airway remodelling in asthma include goblet cell hyperplasia, deposition of collagens in the basement membrane, increased number and size of microvessels, hypertrophy and hyperplasia of airway smooth muscle, and hypertrophy of submucosal glands. Apart from inflammatory cells, such as eosinophils, activated T cells, mast cells and macrophages, structural tissue cells such as epithelial cells, fibroblasts and smooth muscle cells can also play an important effector role through the release of a variety of mediators, cytokines, chemokines, and growth factors. Through a variety of inflammatory mediators, epithelial and mesenchymal cells cause persistence of the inflammatory infiltrate and induce airway structural remodelling. The end result of chronic airway inflammation and remodelling is an increased thickness of the airway wall, leading to a increased the bronchial hyperresponsiveness and fixed declined lung function.

기관지에 발생한 선양 낭성암종의 세포학적 소견 - 1례 보고 - (Cytopathologic Features of Primary Bronchial Adenoid Cystic Carcinoma - A Case Report -)

  • 이지신;김종순;양복숙;이민철;박창수;정상우
    • 대한세포병리학회지
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    • 제6권1호
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    • pp.67-70
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    • 1995
  • Adenoid cystic carcinoma arising from the submucosal glands of the trachea and bronchial tree is rare. The histopathology and natural history of bronchial adenoid cystic carcinoma have been well documented, but detailed descriptions of its cytomorphology are few. We report a case of primary bronchial adenoid cystic carcinoma in a 20-year-old female, diagnosed by bronchial brushing cytology. The cytologic specimens showed large clusters of small cells arranged around cystlike spaces containing globular basophilic material.

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한국 재래산양의 태아 및 신생아의 폐 발달에 관하여 (Development on the lungs of fetuses and neonates in Korean native goats)

  • 서득록;이국천;이순선;김종섭
    • 한국동물위생학회지
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    • 제20권1호
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    • pp.55-67
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    • 1997
  • The morphological development of lungs in fetuses of 60, 90 and 120 days of gestation and neonates of Korean native goats was investigated by light, scanning and transmission electron mictroscope. The results were summarized as follows ; 1. Gross findings ; In the 60-days-old fetus, the lung was developed and differentiated into six lobes. 2. Light microscopic findings : The gland-like bronchioles were formed in loose mesenchyme at 60 days of gestation and the bronchial wall contained smooth muscles. The loose mesenchyme had been replaced by compact parenchymal tissue at 90 days of gestation and the cartilage plates appeared in bronchial wall which contained blood vessels, submucosal glands and smooth muscles. The lung parenchyma consisted of a fine network of alveoli at 120 days of gestation and the bronchial wall contained well-developed blood vessels, submucosal glands, cartilage plates and smooth muscles. In neonates, the lung tissue was similar to the mature lung tissue and the bronchial wall contained well developed cartilage plates. 3. Scanning electron microscopic findings : The epithelial cells lining the tubules were composed of cuboidal or columnar at 60 days of gestation and the epithelial cells lining the large airways were often ciliated : some were covered with stubby microvilli. The epithelial cells lining the canals were cuboidal at 90 days of gestation and the epithelial cells lining the bronchioles were ciliated cells or nonciliated(clara) cells, The clara cells contained row microvilli. The alvealor development of this stage was rapidly progressed ; the subdivision of canals by alveolar crests and assosiated wall attenuation resulted alveoli at 120 days of gestation and the respiratory bronchioles were lined by ciliated or nonciliated epithelial cells. In neonates, the epithelial cells lining the alveolar walls were mainly covered with pneumocyte type I ; Some were covered with pneu-mocyte type II. 4. Transmission electron microscopic findings : The epithelial cells lining the tubules were adhered with tight junction at apical borders of the adjacent cells at 60 days of gestation, which contained few organells and glycogen. The epithelial cells lining the canals were composed mostly of cuboidal cell at 90 days of gestation and the epithelial cells lining of the bronchioles were ciliated of nonciliated cell, which contained few organelles and abundant glycogen. The epithelial cells lining the alveolar walls were composed of pneumocyte type I and a few pneumocyte type II at 120 days of gestation. The epithelial cells lining of the bronchioles were ciliated or nonciliated cells. In neonates, pneumocyte type I was observed as flat and thin cytoplasmic extension in shape. Otherwise, pneumocyte type II was observed as cuboidal type with apical microvilli and contained osmiophillic lamellar inclusion bodies. Putting these various experiment results together, the lung development was slowly progressed at early stage, which was rapidly progressed in the late stage of gestation.

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폐결핵 환자에서 발생한 점액표피양 암종 1예 (A Case of Mucoepidermoid Carcinoma in Pulmonary Tuberculosis Patient)

  • 정재만;송주영;홍재락;김영준;김문식
    • Tuberculosis and Respiratory Diseases
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    • 제41권4호
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    • pp.429-434
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    • 1994
  • 저자들은 폐결핵 치료중 흉통, 발열, 기침 등 폐렴소견과 단순흉부 X 선상 결핵의 악화소견으로 본 병원에 입원한 67세 남자에서 순차적인 단순흉부X선과 기관지 내시경 및 조직생검을 통하여 좌측 주기관지에서 발생한 고등급의 점액표피양 암종을 확인하였으며, 진단후 17개월만에 사망한 1예를 경험하였기에 문헌고찰과 함께 보고하는 바이다.

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