[Postoperative changes in immunoreactive plasma endothelin concentrations].
We investigated postoperative changes in immunoreactive plasma endothelin (ET-1) concentrations using a highly specific and sensitive radioimmunoassay developed for this purpose. The patients were divided into two groups: 10 patients underwent subtotal-esophagectomy by combined right thoracotomy and celiotomy (EC-group), and an other 10 underwent total gastrectomy via celiotomy only (GC-group). Before operation, plasma ET concentrations in both groups were within the normal range. After operation, the mean plasma ET-1 concentration in the EC group was significantly higher than the preoperative concentration (p less than 0.01). But in the GC-group, there were no significant change. A significant correlation existed between the change in plasma ET-1 concentration and the amount of intraoperative hemorrhage (p less than 0.05). Additionally in the EC group, a significant correlation existed between plasma ET-1 concentrations after operation and the change in the atrial-natriuretic-peptide (ANP) concentration during operation (p less than 0.05). There was no correlation between ET-1 concentrations and blood pressure. We believe that the increase in the ET-1 concentration was attributable to endothelial cell injury and may increase ANP secretion. We speculate that the plasma ET-1 concentration may be a reliable index of surgical stress.
Ito
K
K
First Department of Surgery, School of Medicine, Tokyo Medical and Dental University, Japan.
Goseki
N
N
Endo
M
M
Hirata
Y
Y
Marumo
F
F
D000328:Adult; D000368:Aged; D000595:Amino Acid Sequence; D009320:Atrial Natriuretic Factor / Q000097:blood; D016063:Blood Loss, Surgical; D016232:Endothelins / Q000097:blood* / Q000276:immunology; D004938:Esophageal Neoplasms / Q000097:blood / Q000601:surgery; D016629:Esophagectomy; D005260:Female; D005743:Gastrectomy; D006801:Humans; D008297:Male; D008875:Middle Aged; D008969:Molecular Sequence Data; D011184:Postoperative Period; D011863:Radioimmunoassay; D013274:Stomach Neoplasms / Q000097:blood / Q000601:surgery
D016232:Endothelins; D009320:Atrial Natriuretic Factor