Group IIA-soluble phospholipase A2 levels in patients with infections after esophageal cancer surgery.
OBJECTIVE
To examine the changes in blood-soluble phospholipase A(2)-IIA levels caused by surgical stress and postoperative infections.


METHODS
We retrospectively analyzed a prospective database of 40 patients who underwent esophagectomy for esophageal cancer. Nine of these patients had a postoperative infection (E Inf(+) group), and 31 did not have a postoperative infection (E Inf(-) group). The blood sPLA(2)-IIA level was measured using a radioimmunoassay, and whole blood was stimulated with lipopolysaccharide (LPS) to examine the sPLA(2)-IIA production.


RESULTS
In the E Inf(-) group, the blood sPLA(2)-IIA levels peaked on postoperative day (POD) 3 then decreased gradually thereafter. Receiver-operator characteristic statistics based on the sPLA(2)-IIA values on POD 5, which are used to classify postoperative infectious complications, revealed an area under the curve of 0.789. However, stimulation of peripheral blood cells with LPS did not induce the production of sPLA(2)-IIA.


CONCLUSIONS
During the early postoperative phase, blood sPLA(2)-IIA levels increase according to the surgical stress. Soluble PLA(2)-IIA may be produced at the site of infection or in the liver, but not in the circulating blood. Sustained elevation of the serum sPLA(2)-IIA level, observed even after POD 3, seems to represent a response to postoperative infection.
Ogawa
Masaaki
M
Department of Surgery 1, Iwate Medical University School of Medicine, Morioka, Japan.
Sato
Nobuhiro
N
Endo
Shigeatsu
S
Kojika
Masahiro
M
Yaegashi
Yasunori
Y
Kimura
Yusuke
Y
Ikeda
Kenichiro
K
Iwaya
Takeshi
T
D015415:Biomarkers / Q000097:blood; D003110:Colonic Neoplasms / Q000601:surgery; D004938:Esophageal Neoplasms / Q000601:surgery*; D016629:Esophagectomy; D005260:Female; D054501:Group II Phospholipases A2; D006801:Humans; D007239:Infections / Q000097:blood* / Q000175:diagnosis / Q000209:etiology; D015850:Interleukin-6 / Q000097:blood; D016209:Interleukin-8 / Q000097:blood; D008297:Male; D008875:Middle Aged; D010741:Phospholipases A / Q000097:blood*; D054467:Phospholipases A2; D011183:Postoperative Complications / Q000097:blood* / Q000175:diagnosis; D012372:ROC Curve; D011863:Radioimmunoassay; D013312:Stress, Physiological / Q000097:blood / Q000209:etiology
D015415:Biomarkers; D015850:Interleukin-6; D016209:Interleukin-8; D010741:Phospholipases A; D054501:Group II Phospholipases A2; D054467:Phospholipases A2