[Interest of serologic markers in inflammatory bowel disease. About 105 cases].
BACKGROUND
The serum markers ASCA and pANCA can help the clinician in certain difficult situations of colites in IBD. The aim of this study was to determine the sensitivity and the specificity of each one of these markers and to establish the characteristics of the positive patients for each one.


METHODS
We included patients having a Crohn's disease (CD) or an ulcerative colitis (UC). These patients was compared to a control group.


RESULTS
80 CD patients with an average age of 35.62 years, 25 UC cases with an average age of 34.92 years and 79 healthy subjects with an average age of 34.2 years were included. The ASCA were detected in 33.8% of CD cases , 8% of UC cases of RCH and 2.5% of contro group (p < 000.1). The pANCA were detected in 48% of UC cases, 27.5% of CD patients and 1.3% of controls (p < 000.1). The sensitivity and the specificity of the ASCA and the pANCA for the diagnosis respectively of CD and UC were 33.8%, 97.5% and of 48%, 97.8%. During the CD, the positivity of the ASCA was significantly associated with ileal location (p = 0.001), with the sténosant and/or fistulisant phenotyp of the disease (p = 0.006), the young age at the time of the diagnosis of the CD (p = 0.067) and at a greater frequency of surgical treatment (p = 00.7). The pANCA were more frequently found in colic location of CD (p = 0.09). During UC, the positivity of the pANCA was not associated with the sex, age, loca tion of the disease, medical treatment nor chiurgical treatment.


CONCLUSIONS
The ASCA and pANCA are useful during some clinical situations such as differentiation between IBD otherss colitis and to distinguish CD from UC.
Fekih
Monia
M
Service de Gastro entérologie A, Hopital la Rahta.
Ben Hlima
Sameh
S
Zitouni
Mondher
M
Matri
Samira
S
Boubaker
Jalel
J
Makni
Soundes
S
Azza
Filali
F
D000328:Adult; D000367:Age Factors; D019268:Antibodies, Antineutrophil Cytoplasmic / Q000097:blood*; D000908:Antibodies, Fungal / Q000097:blood*; D015415:Biomarkers / Q000097:blood; D003093:Colitis, Ulcerative / Q000097:blood* / Q000145:classification / Q000276:immunology / Q000601:surgery; D003251:Constriction, Pathologic / Q000097:blood / Q000276:immunology; D003424:Crohn Disease / Q000097:blood* / Q000145:classification / Q000276:immunology / Q000601:surgery; D005260:Female; D006801:Humans; D007077:Ileal Diseases / Q000097:blood / Q000276:immunology; D007155:Immunologic Factors / Q000097:blood*; D007412:Intestinal Fistula / Q000097:blood / Q000276:immunology; D008297:Male; D008351:Mannans / Q000097:blood / Q000276:immunology*; D011237:Predictive Value of Tests; D011350:Proctocolitis / Q000097:blood; D012441:Saccharomyces cerevisiae / Q000276:immunology*; D012680:Sensitivity and Specificity
D019268:Antibodies, Antineutrophil Cytoplasmic; D000908:Antibodies, Fungal; D015415:Biomarkers; D007155:Immunologic Factors; D008351:Mannans