[Clinical and laboratory characteristics of anti-soluble liver antigen/liver-pancreas (SLA/LP) autoantibody positive liver disease patients].
OBJECTIVE
To analyze the clinical and laboratory features of anti-soluble liver antigen/liver-pancreas (SLA/LP) autoantibody positive patients with abnormal liver functions.


METHODS
From July 1999 to August 2004, 4928 serum samples from patients with abnormal liver functions (ALT >40 U/L) were collected. A series of autoantibody examinations were carried out. Clinical manifestations and laboratory findings of 8 patients with anti-SLA/LP autoantibody positive were reviewed.


RESULTS
Among the 5500 serum samples, 8 cases (6 females and 2 males) with positive anti-SLA/LP autoantibodies were found with complete clinical information. The age of the patients was (27-76) years old. The case histories were from 2 years to 10 years. Of the 8 patients, 6 cases had liver cirrhosis and HBsAg-negative and anti-HCV-negative, active, 1 case had liver cirrhosis with HBsAg-positive, but HBVDNA negative; 1 case had liver cirrhosis and anti-HCV positive, but HCV RNA negative. The 8 cases were all ANA positive with titers of 31:320. Four cases were AMA positive and 2 among these 4 cases were M2 positive. The most frequent symptoms were fatigue, anorexia, nausea, jaundice, abdominal distention and edema of lower limbs. All patients had high hypergammaglobulinemia.


CONCLUSIONS
Anti-SLA/LP autoantibody was at a low detection rate in the study with females in preponderance, Clinical and laboratory characteristics of the 8 cases were consistent with those of the autoimmune hepatitis (AIH). Testing for anti-SLA autoantibodies helps in the diagnosis of AIH in many patients who may otherwise be misdiagnosed.
Liu
Yan-min
YM
Beijing You'an Hospital, Capital University of Medical Sciences, Beijing 100069, China. better1999388@sohu.com
Yan
Hui-ping
HP
Tan
Yu-fen
YF
Liu
Yan
Y
Feng
Xia
X
Kong
Shu-ling
SL
D000328:Adult; D000368:Aged; D001323:Autoantibodies / Q000276:immunology*; D001324:Autoantigens / Q000276:immunology*; D005260:Female; D019693:Hepatitis, Autoimmune / Q000175:diagnosis / Q000276:immunology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D010179:Pancreas / Q000276:immunology*; D017385:Sequence Homology
D001323:Autoantibodies; D001324:Autoantigens; C046431:liver antigen LA-1