[Detection of autoimmune parameter of SARS patients].
OBJECTIVE
To explore whether autoimmune phenomena exist in SARS patients, and to seek for unusual autoimmune antibodies in SARS patients.


METHODS
Autoantibodies against cell nuclei (ANA), autoantibodies against smooth muscles (SMA), autoantibodies against parietal cells (PCA), autoantibodies against heart cells (HRA) were detected by using immunofluorescence, and autoantibodies against live-kidney microsomes (LKM) and anti-M2 antibodies were detected by ELISA in sera taken from 27 SARS patients and 18 healthy controls. Immunofluorescence was used to localize the targets antigens in slides with biochips of lung (monkey) of SARS associated antibodies.


RESULTS
ANA, AMA, LKM and SMA were found positive in 3, 1, 1, and 1 of the 27 SARS sera. In 18 healthy control sera, one ANA and one AMA were positive. Statistical analysis showed that there were no difference between two groups in every item detected. Twenty-six of 27 SARS patients and 5 of 18 healthy controls had strongly stained columnar epithelia of the bronchiole, especially the lumen border of the epithelia?the difference between two groups was significant.


CONCLUSIONS
No antibodies against organs but lung were found in SARS patients. There are auto antibodies against lung tissues in sera of SARS patients.
Li
Bo-an
BA
The Department of Immunology, Institute of Infectious Disease, The No. 302 Hospital, Beijing 100039, China.
He
Wei-ping
WP
Liu
Yan
Y
Shu
Cui-li
CL
Li
Jing
J
Gao
Rong
R
Hou
Jun
J
Li
Jin
J
Cheng
Yun
Y
D000293:Adolescent; D000328:Adult; D000368:Aged; D019268:Antibodies, Antineutrophil Cytoplasmic / Q000097:blood; D000974:Antibodies, Antinuclear / Q000097:blood; D001323:Autoantibodies / Q000097:blood*; D001782:Blood Donors; D002648:Child; D002675:Child, Preschool; D004797:Enzyme-Linked Immunosorbent Assay; D005260:Female; D054884:Host-Pathogen Interactions; D006801:Humans; D007223:Infant; D008168:Lung / Q000276:immunology; D008297:Male; D008875:Middle Aged; D045473:Severe acute respiratory syndrome-related coronavirus / Q000502:physiology*; D045169:Severe Acute Respiratory Syndrome / Q000097:blood / Q000276:immunology* / Q000821:virology; D055815:Young Adult
D019268:Antibodies, Antineutrophil Cytoplasmic; D000974:Antibodies, Antinuclear; D001323:Autoantibodies