The effect of activated alveolar macrophages on experimental lung emphysema development. III. Morphological analysis of the lung tissue and alveolar macrophages in situ. 1995

S Sulkowski, and H F Nowak, and M Sulkowska, and M Sobaniec-Lotowska, and A Andrzejewska, and M Sulik, and J Dziecioł, and W Famulski, and B Poczopko
Department of Pathological Anatomy, Medical Academy of Białystok.

Morphological (in light and transmission electron microscope) as well as morphometrical analysis of the lungs was performed on experimental, papain-induced lung emphysema. Development of emphysematous changes was studied seven days after a single intratracheal instillation of papain solution. The effect of alveolar macrophages (AM) activation by BCG-vaccine on changes in pulmonary tissue was analyzed. In the rats given BCG the number of AM increased and demonstrated enhanced activity. Increase in reticulin fibre density in places of AM cumulation, particularly in BCG+papain-treated rats was observed. The lungs of animals treated with BCG+papain showed enhancing of emphysema comparing with the papain-treated rats. Development of emphysematous changes, especially in BCG+papain-treated rats coexisted with cumulation of activated alveolar macrophages and collagen fibres as well as type II alveolar epithelial cells proliferation. Our data support the inflammatory-repair hypothesis of emphysema pathogenesis and indicate that AM regulate collagen production in the lung. Type II alveolar epithelial cells seem be important in lung injury and repair.

UI MeSH Term Description Entries
D008297 Male Males
D008854 Microscopy, Electron Microscopy using an electron beam, instead of light, to visualize the sample, thereby allowing much greater magnification. The interactions of ELECTRONS with specimens are used to provide information about the fine structure of that specimen. In TRANSMISSION ELECTRON MICROSCOPY the reactions of the electrons that are transmitted through the specimen are imaged. In SCANNING ELECTRON MICROSCOPY an electron beam falls at a non-normal angle on the specimen and the image is derived from the reactions occurring above the plane of the specimen. Electron Microscopy
D010206 Papain A proteolytic enzyme obtained from Carica papaya. It is also the name used for a purified mixture of papain and CHYMOPAPAIN that is used as a topical enzymatic debriding agent. EC 3.4.22.2. Tromasin
D011650 Pulmonary Alveoli Small polyhedral outpouchings along the walls of the alveolar sacs, alveolar ducts and terminal bronchioles through the walls of which gas exchange between alveolar air and pulmonary capillary blood takes place. Alveoli, Pulmonary,Alveolus, Pulmonary,Pulmonary Alveolus
D012155 Reticulin A scleroprotein fibril consisting mostly of type III collagen. Reticulin fibrils are extremely thin, with a diameter of between 0.5 and 2 um. They are involved in maintaining the structural integrity in a variety of organs. Reticular Fiber,Reticular Fibers,Reticular Fibril,Reticular Fibrils,Reticulin Fiber,Reticulin Fibers,Reticulin Fibril,Reticulin Fibrils,Fiber, Reticular,Fiber, Reticulin,Fibers, Reticular,Fibers, Reticulin,Fibril, Reticular,Fibril, Reticulin,Fibrils, Reticular,Fibrils, Reticulin
D003094 Collagen A polypeptide substance comprising about one third of the total protein in mammalian organisms. It is the main constituent of SKIN; CONNECTIVE TISSUE; and the organic substance of bones (BONE AND BONES) and teeth (TOOTH). Avicon,Avitene,Collagen Felt,Collagen Fleece,Collagenfleece,Collastat,Dermodress,Microfibril Collagen Hemostat,Pangen,Zyderm,alpha-Collagen,Collagen Hemostat, Microfibril,alpha Collagen
D003238 Connective Tissue Tissue that supports and binds other tissues. It consists of CONNECTIVE TISSUE CELLS embedded in a large amount of EXTRACELLULAR MATRIX. Connective Tissues,Tissue, Connective,Tissues, Connective
D003593 Cytoplasm The part of a cell that contains the CYTOSOL and small structures excluding the CELL NUCLEUS; MITOCHONDRIA; and large VACUOLES. (Glick, Glossary of Biochemistry and Molecular Biology, 1990) Protoplasm,Cytoplasms,Protoplasms
D004646 Emphysema A pathological accumulation of air in tissues or organs.
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia

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