Langenbecks Archiv für Chirurgie. Supplement. Kongressband. Deutsche Gesellschaft für Chirurgie. Kongress
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Langenbecks Arch Chir Suppl Kongressbd · Jan 1998
[Systemic effect of extremity-ischemia reperfusion surgical trauma. Assessment of tourniquet ischemia induced activation of poplymorphonuclear neutrophic granulocytes].
Ischemia-reperfusion-injury represents a fundamental common pathway of tissue damage in a wide variety of disease processes, i.e. myocardial infarction, septic or hemorrhagic shock, multiple organ failure, trauma and organ transplantation. Ischemia-reperfusion-injury is said to be initiated by leukocyte accumulation and adhesion to vascular endothelium as well as oxygen free radicals playing a pivotal role in the pathogenesis of ischemia-reperfusion-injury. However, only few data exist for measuring influence of tourniquet-ischemia on the activation of granulocytes in humans. ⋯ The tourniquet-ischemia of the upper limb without any operation (n = 10) induced an increase of the CD 11b-expression too (systemic, 149 +/- 76% and local 131 +/- 90%, both: p < 0.05 vs. bl). Furthermore there was a spontaneous release of free radical oxygen to 129.2 +/- 26.2% (systemic) und 154.8 +/- 35.9% (local: p < 0.01 vs. bl:) After stimulation by Phorbol-Myristat-Acetat (PMA) we demonstrated a decrease to 67.6 +/- 23.2% (systemic, p < 0.01 vs. bl) and to 68.3 +/- 15.6% (local, p < 0.01 vs. bl). These results indicate that ischemia-reperfusion-injury in humans induces a early measurable local and systemic activation of circulating PMN-granulocytes.
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Langenbecks Arch Chir Suppl Kongressbd · Jan 1998
Comparative Study[Effect of pneumoperitoneum on hemodynamics and intestinal integrity in endotoxinemia: CO2 versus helium].
In a study in pigs pathophysiological effects of a pneumoperitoneum (PP) established during endotoxemia (2 micrograms/kg b.w./hr) were investigated. In this situation a PP with carbon dioxide (CO2) or helium induces a deterioration of systemic hemodynamics or acid-base-stability. ⋯ A CO2-PP adversely affects the intestinal energy metabolism and leads to significantly increased endotoxin levels in contrast to helium after desufflation of the abdominal cavity. Data of this study at least demand for a careful monitoring, if laparoscopy is performed in septic and critically ill patients.
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Langenbecks Arch Chir Suppl Kongressbd · Jan 1998
[Detection of disseminated carcinoma cells in bone marrow and peripheral blood in primary breast cancer with RT/PCR of parathyroid hormone-related protein (PTHrP)].
The analysis of tissue specific gene expression by reverse transcription based RT/PCR methods is currently evaluated as a method for the detection of tumor cell dissemination in patients with cancer. Breast cancer tissues express PTHrP and the level of PTHrP expression in the primary tumor correlates with the incidence of metastases in the bone. We applied a RT/PCR assay of PTHrP to detect tumor cells in the mononuclear cell fraction of peripheral blood (pb) and bone marrow (bm) of patients with newly diagnosed breast cancer. ⋯ During the period of observation there was no local and metastatic relapse detectable in the group of patients with primary lymph node negative breast cancer. In summary the increased risk for local or systemic relapse would have been predictable by RT/PCR of PTHrP alone in pb in 4 of the 9 local and in 2 of the 7 early metastatic relapses. Further follow-up of the patient cohort analysed is needed to assess the value of the RT/PCR of PTHrP as a prognostic and predictive marker in patients with breast cancer.