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[Cyto-histochemical study of morphogenesis of experimental nonspecific pneumonia]
Abstract:
Examination of macrophages, polymorphonuclear leukocytes (PMNL) and lymphocytes of the trachea, PMNL and blood lymphocytes, of the condition of pulmonary tissue in the time course of the process (1st day--l months) revealed an association between the developing cellular and tissue changes. The development of alterations in the lungs with predominant anabolic changes and moderate exudation are characterized by a decrease in the content of nucleoproteins (deoxyribonucleoproteins, ribonucleoproteins), and activity of NAD-diaphorase and alkaline phosphatase, an increase in the activity of acid phosphatase in the above-mentioned cells of the trachea and blood as well as by increased permeability of lysosomal membranes and degeneration of macrophages, PMNL and lymphocytes of the trachea. The above cellular changes in combination with increased permeability of PMNL and blood lymphocyte lysosomal membranes correspond to the development in the lungs of catabolic alterative lesions, marked exudation, and suppurative-necrotic processes. The increase in the content of nucleoproteins and NAD-diaphorase and alkaline phosphatase activity and the decrease in the acid phosphatase activity are accompanied by activation of proliferation in the lungs.
Insights
This study links cellular changes in the trachea and blood to lung tissue alterations. Decreased nucleoproteins and enzyme activity correlate with catabolic lung lesions, while increased levels indicate proliferation.
Area of Science:
- Pulmonary Pathology
- Cellular Biology
- Immunology
Context:
- Investigates the dynamic relationship between cellular and tissue changes in the lungs over time.
- Focuses on the cellular and biochemical alterations within pulmonary tissue and associated immune cells.
Purpose:
- To elucidate the association between cellular changes in macrophages, polymorphonuclear leukocytes (PMNL), and lymphocytes and the resulting pulmonary tissue condition.
- To characterize the biochemical and morphological shifts in immune cells during lung tissue alteration progression.
Summary:
- Cellular changes, including decreased nucleoproteins and altered enzyme activities (NAD-diaphorase, phosphatases), were observed in tracheal and blood immune cells.
- Increased lysosomal membrane permeability and cell degeneration in macrophages, PMNL, and lymphocytes correlate with catabolic lung lesions, exudation, and necrosis.
- Conversely, increased nucleoprotein content and specific enzyme activities, alongside decreased acid phosphatase, are linked to lung tissue proliferation.
Impact:
- Provides insights into the cellular mechanisms underlying lung tissue damage and repair processes.
- Highlights the role of specific enzyme activities and nucleoprotein content as indicators of lung pathology.
- Establishes a correlation between cellular immune responses and the progression of lung diseases.