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Gallium-67 activity in bronchoalveolar lavage fluid in sarcoidosis | JoVE Visualize

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Gallium-67 activity in bronchoalveolar lavage fluid in sarcoidosis

H A Trauth, K Heimes, R Schubotz

Annals of the New York Academy of Sciences|January 1, 1986

View abstract on PubMed

Summary

Gallium-67 counts in bronchoalveolar lavage fluid can assess pulmonary sarcoidosis activity. Higher gallium-67 activity in lavage fluid indicates active sarcoidosis, while lower activity suggests improvement.

Area of Science:

Pulmonary Medicine
Nuclear Medicine
Immunology

Background:

Pulmonary sarcoidosis activity assessment often uses imaging and fluid analysis.
Quantifying gallium-67 uptake in lung scans can be challenging.
Bronchoalveolar lavage (BAL) fluid analysis may correlate with gallium-67 uptake.

Purpose of the Study:

To investigate gallium-67 activity in BAL fluid from different patient groups.
To determine if BAL fluid gallium-67 counts reflect pulmonary sarcoidosis activity.

Main Methods:

Studied 16 untreated sarcoidosis patients, 9 healthy individuals, and 5 with chronic fibrosing alveolitis (CFA).
Measured lung gallium-67 uptake, BAL fluid gallium-67 activity, SACE, LACE, and alpha 1-AT levels.
Correlated BAL fluid gallium-67 activity with cell counts and other biomarkers.

Main Results:

Significantly higher BAL fluid gallium-67 activity in sarcoidosis patients compared to CFA and healthy controls (p < .001).
BAL fluid gallium-67 activity strongly correlated with lymphocyte counts but weakly with macrophage counts.
Elevated SACE or alpha 1-AT levels showed higher lavage gallium-67 activity, but without direct correlation.

Conclusions:

Gallium-67 counts in BAL fluid effectively reflect gallium-67 uptake intensity and pulmonary sarcoidosis activity.
High BAL fluid gallium-67 activity may indicate acute sarcoidosis or deterioration.
Low BAL fluid gallium-67 activity suggests a positive treatment response or improvement.

Gallium-67 Activity In Bronchoalveolar Lavage Fluid In Sarcoidosis