I have been studying the pathophysiology of chronic pancreatitis over a long period, discussing it with particular reference to the clinical aspect of the correlation between the stomach and the pancreas. When the correlation between the stomach and the pancreas was looked upon from the standpoint of the secretion of gastric juice and that of pancreatic juice, with particular reference to the acid and bicarbonate secretions, it was found that the secretions of the two juices in normal subjects were in positive correlation, and the findings were described in a previous paper.
It was, in fact, of particular interest that when the patients with chronic pancreatitis and those with recurrent chronic pancreatitis according to the diagnostic criteria were examined for their A/B ratios, many patients were classified into type III and type I.
It was further interesting that there were some extraordinary types of chronic pancreatiti including one patient (with recurrent gastric ulcer) from type I in whom the autoimmune mechanism was pathologically considered, a few patients presenting paradoxical blood gastrin secretion observed in cases of Zollinger-Ellison syndrome, and one patient in whom the proliferation of Langerhans' islets (tumor?) was demonstrated.
The fact that the administration of secretin led to improvement may be suggestive of the existence of a secretin abnormality in the pathogenesis, though it is not clear at what level of the metabolic process (synthesis, secretion, receptor, elimination, etc.) this abnormality exists. It would also be possible to understand this abnormality in terms of “relative shortage”, since the addition of secretin led to improvement. One piece of evidence that might support this possibility is the fact that chronic pancreatitis is caused by difficulties in outflow of pancreatic juice due to the structural defect. In other words the disease may be described as a state of impeded outflow of pancreatic juice due to a relative shortage of secretin. Under this condition, the body's response should naturally be one of increased secretion of secretin. However, it seems that such a phenomenon does not readily occur in reality. Presumably, this is due to the fact that the body must take time for such an in adjustment.
It takes many years before pancreatitis becomes stabilized. Furthermore, secretin levels tend to be high among the stabilized type of pancreatitis (our type III). However, it should be emphasized that the cases analyzed in this study belong to type I. which show low secretin values. Needless to say, it is type I chronic pancreatitis that has the many clinical problems. Thus, the secretin wash-out method is a therapy ideal for the purpose.
Although more cases have to be accumulated, the Δ substance
p/Δ enkepharin (Met) ratio fluctuates interestingly in a small number of cases with severe pain. This is a clinical subject that needs further studies. Particularly, it is of great significance that the possibility of a subpathway via blood other than the main pathway being mobilized at the time of surgical invasion of the living body was suggested clinically.
This therapy which we have developed is worthy of note in that it has successfully shortened (to 5 years or less) and stabilized the treatment of chronic pancreatitis, which normally takes many years (perhaps 10 years or more). However, it is known that pain disappears spontaneously in some cases of chronic pancreatitis. Therefore, we think we must conduct various studies in reference to the “burn-out” suggested by Ammann, Gastard's report, and important surgical indications described by White, with or without calcification, whether or not alcohol is taken, and in consideration of heredity, race, diet, environment, and other background factors.
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