A role for interstitial matrix in tissue tension of alveolar wall

S. Shimura, C. J. Martin, E. S. Boatman, Rajiv Dhand

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Single alveolar walls subjected to lenght-tension studies in saline and Bicine (0.2 M) undergo a progressive decay in tissue tension (TTD). We have examined the effect of different solutions on this TTD and looked for corresponding changes in the ultrastructure. Lung parenchyma was dissected to single alveolar walls (30 × 30 × 150 μm) in phosphate-buffered saline (0.15 M). Transferred to a lenght-tension bath, the tissue was immersed in Bicine, saline, fortified Hank's solution, 0.25% Alcian blue in saline, or a sodium dodecyl sulfate solution, for variable periods. Cycled through a given extension with peak force measured over time, these same tissues were fixed in buffered glutaraldehyde/tannic acid and processed for electron microscopy. Single alveolar walls immersed in saline or Bicine showed a progressive TTD. Vacuoles or spaces appeared in the interstitium which with cellular disorganization progressed with the TTD. Seen within 0.3 h, the changes were well advanced at 0.6 h. In sodium dodecyl sulfate (70 mm), however, there was no TTD and structurally there was no interstitium, with only basement membranes and fibrous proteins remaining. In fortified Hank's solution or 0.25% Alcian blue the interstitial matrix, cell morphology and tissue tension were well perserved for 1 h. This study suggests that leaching of the interstitial matrix occurs in saline or Bicine, and an intact matrix is essential for the preservation of tissue tension.

Original languageEnglish (US)
Pages (from-to)293-303
Number of pages11
JournalRespiration Physiology
Volume62
Issue number3
DOIs
StatePublished - Jan 1 1985

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Alcian Blue
Sodium Dodecyl Sulfate
Scleroproteins
Tissue Preservation
Tannins
Glutaral
Vacuoles
Baths
Basement Membrane
Electron Microscopy
Membrane Proteins
Phosphates
Lung

All Science Journal Classification (ASJC) codes

  • Physiology
  • Pulmonary and Respiratory Medicine

Cite this

A role for interstitial matrix in tissue tension of alveolar wall. / Shimura, S.; Martin, C. J.; Boatman, E. S.; Dhand, Rajiv.

In: Respiration Physiology, Vol. 62, No. 3, 01.01.1985, p. 293-303.

Research output: Contribution to journalArticle

Shimura, S. ; Martin, C. J. ; Boatman, E. S. ; Dhand, Rajiv. / A role for interstitial matrix in tissue tension of alveolar wall. In: Respiration Physiology. 1985 ; Vol. 62, No. 3. pp. 293-303.
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