Effects of cholecystectomy (laparoscopic versus open) on PMN-elastase - PubMed (original) (raw)
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- PMID: 17523270
Comparative Study
Effects of cholecystectomy (laparoscopic versus open) on PMN-elastase
M Schietroma et al. Hepatogastroenterology. 2007 Mar.
Abstract
Background/aims: Polymorphonuclear leukocytes (PMN) are well recognized as being the principal cells in inflammatory response reaction. During the surgical procedures there is a massive release of elastase (PMN-elastase) from the neutrophils, along with other proteinases. Therefore the measurement of the PMN-elastase might be a useful indicator of the degree of surgical trauma. Laparoscopic cholecystectomy (LC) is a so-called "mini-invasive" surgical procedure and on the basis of this consideration the aim of the present prospective, non-randomized study, is to examine (a) whether the serum levels of PMN-elastase concentration are modified and how, in patients undergoing LC compared to patients undergoing open cholecystectomy (OC), (b) whether these findings are indicative of an increased risk to develop infectious complications and therefore whether they are clinically significant.
Methodology: Plasma granulocyte elastase was determined photometrically, using an immune-activation immunoassay, in 86 patients (42 patients underwent OC and 44 LC). The levels of C reactive protein (CRP), an acute phase protein, were measured using a competitive CRP ELISA kit. Blood samples were collected from all patients a day before operation and at days 1, 3, 6 and 12 after operation. We established a reference range for elastase by measuring the serum elastase concentration in 68 normal control patients without gallbladder cholelithiasis or other diseases.
Results: On day, 1, 3 and 6 after surgery, patients that underwent OC showed a significant increase (p < 0.05) in plasma elastase concentration, while it was almost unchanged in LC patients. The mean values of the serum CRP on p.o. days 1, 3 and 6 were also significantly lower in the LC group than those in OC group (p < 0.05). We recorded three cases (7.1%) of postoperative infections in the "open" group. The CRP concentration remained high for 1, 3 and 6 days and normalized 10-12 days after surgery while the PMN-elastase normalized after 13, 14 and 16 days.
Conclusions: The peripheral leukocyte function may be better preserved after LC in comparison to OC. Laparoscopic surgery, associated with a small skin incision and the avoidance of open laparotomy, can thus minimize surgical stress, and provide more favorable postoperative conditions for patients. Indeed excessive and prolonged post-injury elevations of PMN-elastase and CRP are associated with increased morbidity. Moreover, the PMN-elastase is a more sensible marker of inflammation in comparison to the CRP.
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