among the drug delivery and targeting (ddt) routes, lung alveolar epithelium has been given enormous attentions in terms of the delivery of a wide range of macromolecules such as gene- or protein-based nanopharmaceuticals. however, little is known about cellular modulation of lung transport characteristics by endogenous and/or exogenous agents. thus, in the current study, impact of dexamethason...

it was known that il-1β-induced rapid expression of mir-146a, which regulated the secretion of inflammatory chemokines in human a549 alveolar epithelial cells. however, little is known about the level of primary mir-146a and the downstream biogenesis of mir-146a in a549 cells. we examined the levels of primary mir-146a and mature mir-146a in a549 cells following treatment with pharmacological i...

conclusions results of the current study showed the high prevalence of m. tuberculosis among the patients with lung cancer; therefore, it seems that continuous surveillance is essential to monitor the m. tuberculosis in the patients with lung cancer. results the subjects included 252 (66.3%) males and 128 (33.7%) females. based on cultural and microscopic methods, m. tuberculosis infection was ...

Alveolar epithelial type I cells cover most of the internal surface area of the lungs. Ultrastructural studies demonstrate that alveolar epithelial type I cell damage is frequently observed in acute and chronic lung diseases. This article discusses the use of cell-selective proteins as markers for the investigation of injury and repair of the alveolar epithelium. The utility of proteins specifi...

Alveolar epithelial fluid transport was studied 10 days after subacute lung injury had been induced with intratracheal bleomycin (0.75 U). An isosmolar Ringer lactate solution with 5% bovine serum albumin and125I-labeled albumin as the alveolar protein tracer was instilled into the right lung; the rats were then studied for either 1 or 4 h. Alveolar fluid clearance was increased in bleomycin-in...

Nanoencapsulation of pesticide atrazine improves efficacy. However, this study discovered adverse bioreactivity in alveolar type 1 epithelial cells (a major recipient inhaled nano-sized particles), following exposure to nanoencapsulated atrazine.

Geiser, Thomas, Pierre-Henri Jarreau, Kamran Atabai, and Michael A. Matthay. Interleukin-1b augments in vitro alveolar epithelial repair. Am J Physiol Lung Cell Mol Physiol 279: L1184–L1190, 2000.—Biologically active interleukin (IL)-1b is present in the pulmonary edema fluid obtained from patients with acute lung injury and has been implicated as an important early mediator of nonpulmonary epi...

Cigarette smoking is a major risk factor in the development of various lung diseases, including pulmonary emphysema, pulmonary fibrosis, and lung cancer. The mechanisms of these diseases include alterations in alveolar epithelial cells, which are essential in the maintenance of normal alveolar architecture and function. Following cigarette smoking, alterations in alveolar epithelial cells induc...

Alveolar barrier function depends critically on the claudin family tight junction proteins. Of the major claudins expressed by alveolar epithelial cells, claudin (Cldn)-3 and Cldn-4 are the most closely related by amino acid homology, yet they differ dramatically in the pattern of expression. Previously published reports have shown that Cldn-3 is predominantly expressed by type II alveolar epit...

Abnormal alveolar wound repair contributes to the development of pulmonary fibrosis after lung injury. Hepatocyte growth factor (HGF) is a potent mitogenic factor for alveolar epithelial cells and may therefore improve alveolar epithelial repair in vitro and in vivo. We hypothesized that HGF could increase alveolar epithelial repair in vitro and improve pulmonary fibrosis in vivo. Alveolar woun...