Abstract:
OBJECTIVE:The aim of this study was to evaluate the tumor necrosis factor alpha (TNF-alpha) releasing capacity in whole blood stimulated by lipopolysaccharide (LPS) in patients with pancreatic cancer during the perioperative period, and before and after chemotherapy. METHODS:The current study involved a total of 39 patients with pancreatic cancer (PC), who were further divided into a PC-Op group (n = 16, underwent pancreatectomy) and a PC-chemo group (n = 23, received chemotherapy). The control groups consisted of patients with hepatocellular carcinoma (n = 27, HCC group) and with benign diseases (n = 15, control group). Serial changes in TNF-alpha in whole blood stimulated by LPS were compared in various clinical settings. RESULTS:Preoperative TNF-alpha levels in the PC-Op group were significantly lower than those in the HCC and control groups (P = 0.034). The TNF-alpha variable surgical index (s-index) was defined as the ratio of the preoperative TNF-alpha level to postoperative level in the PC-Op and HCC groups. Although the TNF-alpha s-index in the PC-Op group was significantly decreased on postoperative day 1 and recovered on postoperative day 3 (P < 0.002), there were no significant changes in the TNF-alpha s-index in the HCC group. The TNF-alpha variable chemotherapeutic index (c-index) was defined as the ratio of the TNF-alpha level before to that after chemotherapy in the PC-chemo group. The TNF-alpha c-index in all 7 patients was reduced to less than 0.3 until leukopenia appeared. Patients who had an increase in TNF-alpha production (TNF-alpha c-index >1.0) on day 3 or 7 after chemotherapy had significantly better cumulative survival than those with no increase (P < 0.033). CONCLUSIONS:TNF-alpha production stimulated by LPS in the whole blood of patients with pancreatic cancer was low. Surgical stress and depressed immunocompetence might induce such profound decreases. A method of assessing the capability of leukocytes, particularly macrophages, to produce TNF-alpha could be useful for prognostis and for monitoring immunocompetence in patients with pancreatic cancer who have undergone chemotherapy.
journal_name
Pancreasjournal_title
Pancreasauthors
Terakawa N,Satoi S,Takai S,Yanagimoto H,Takahashi K,Komiyama Y,A-Hon K,Kamiyama Y,Takahashi Hdoi
10.1097/01.mpa.0000226880.66130.79subject
Has Abstractpub_date
2006-07-01 00:00:00pages
31-7issue
1eissn
0885-3177issn
1536-4828pii
00006676-200607000-00005journal_volume
33pub_type
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