The serum activities of 3 cytokines (TNF,IL-1 and IL-6) were observed in 23 patients admitted within 4 days of onset of acute pancreatitis (AP). The results showed that the serum level of 3 cytokines raised in all of the AP patients, significant difference between TNF and IL-1 was abserved at admission and IL-6 did after one week of admission, suggesting that proper cytokine criteria are useful in predicting severity of the disease but the relationship between cytokines and MOF had not established.
To evaluatae the role of cathepsin B in the pathogenesis of acute pancreatitis. The experimental dogs were divided into three groups based on the severity. An acute edematous pancreatitis group (n＝11), an acute hemorrhagic necrotizing pancreatitis group (n＝12), and a control group (n＝7). Distribution of cathepsin B in pancreatic aciner cell was studied. Results: there was a redistribution of cathepsin B from the lysosomal fraction to the zymogen fraction. The results indicated that cathepsin B play a important role in the pathoagenesis of acute pancreatitis.
【Abstract】Objective To study the influence of early hemofiltration on plasma concentrations of proinflammatory cytokines TNF-α and IL-1β and their transcription levels in severe acute pancreatitis (SAP) pigs. Methods The model of SAP was induced by retrograde injection of artificial bile into pancreatic duct in pigs. Animals were divided randomly into two groups: SAP hemofiltration treatment group (HF group, n=8) and SAP no hemofiltration treatment group (NHF group, n=8). TNF-α and IL-1β plasma concentrations were measured by ELISA. Their transcription levels in the tissues of pancreas, liver and lung were assayed by semi-quantitative reverse transcription polymerase chain reaction. Results After hemofiltration treatment, the plasma concentrations of TNF-α and IL-1β increased gradually but were lower than those of NHF group at the same time spot 〔at 6 h after hemofiltration treatment, (618±276) pg/ml vs (1 375±334) pg/ml and (445±141) pg/ml vs (965±265) pg/ml, P＜0.01〕. At 6 h after hemofiltration treatment, the transcription levels of TNF-α and IL-1β in tissues of pancreas, liver and lung were lower than in NHF group (57.8±8.9 vs 85.7±17.4, 48.0±8.1 vs 78.1±10.2, 46.2±9.6 vs 82.4±10.5; 55.9±9.0 vs 82.2±15.7, 40.6±9.2 vs 60.0±10.6, 35.7±9.8 vs 58.1±9.3, P＜0.01). Conclusion Early hemofiltration can reduce TNF-α and IL-1β plasma concentrations and transcription levels in SAP pigs.
【Abstract】Objective To summarize the effects of vasoactive mediators on local microvasculature in acute pancreatitis（AP）. Methods Literatures concerning metabolism, receptors, action mechanisms of vasoactive mediators and their effects in AP were reviewed. Results Bradykinin, endothelin, platelet activating factor and nitric oxide were important mediators in the development of microcirculatory disturbance in AP, however the results of experiments were inconsistent. Conclusion The roles which vasoactive mediators play in microcirculatory disturbance of AP are affected by many factors, and await further study.
Despite of the progress in the treatment of severe acute pancreatitis (SAP), there are still factors that hinder the improvement of the efficacy of treatment: there is a lack of an accurate and easy-to-use system for early severity prediction; the multidisciplinary collaboration mechanism needs to be further optimized; there is no clinical efficacy evaluation system for traditional Chinese medicine (TCM); the therapeutic targets of TCM are unclear; the effector substances are unknown; and the research and development of new medicines is still difficult. In order to further reduce the mortality of SAP and realize the goal of improving the efficacy, we should strengthen the integration of Chinese and Western medicine, multidisciplinary collaboration, and improve the treatment levels; as well as carry out basic and clinical research oriented to clinical value. We will also promote the innovative development of combined Chinese and Western medicine in the treatment of SAP by elucidating the mechanism, validating the efficacy and commercializing the achievements. In view of SAP, a major and difficult disease, we should insist on the principle of integrity and innovation, the synergy of Chinese and Western medicines and the complementarity of advantages, and promote the innovation and development of combined Chinese and Western medicines in the treatment of SAP, so as to further reduce the morbidity and mortality and to alleviate the burden of the disease.
Objective To summarize the role of inflammatory cytokines in the pathogenesis of acute pancreatitis (AP) and gut barrier dysfunction in recent years. Methods Literatures on cytokines and experimental pancreatitis as well as clinical pancreatitis were collected and reviewed. Results Tumor necrosis factor-α and other inflammatory cytokines were elevated significantly during pancreatitis in many tissues, especially in pancreas and alimentary tract, in a fashion independent of the animal model used. Anti-cytokine therapy could decrease the concentration of the cytokines in experimental animal. Conclusion Inflammatory cytokines are believed to be primarily responsible for the pathogenesis of acute pancreatitis and its associated distant organ dysfunction. Further study of the nature of these cytokines may provide a new approach to treating this disease.