Jin-ichi Kameyama

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Spinal sympathetic neurons are distributed in cord segments from Th1 to L3. High spinal cord injury demonstrates severe orthostatic hypotension, but not lower cord injury. It remains to be clarified as to where is the critical spinal level disturbing neural cardiovascular regulations in response to orthostatic stress. To address this issue, beat-to-beat(More)
Organic acids in plasma and urine of a patient with isovaleric acidemia were measured serially during a severe ketoacidotic attack. Urinary ketone bodies, lactic acid and 2-hydroxy-n-butyric acid changed in parallel with the plasma isovaleric acid concentration, which was correlated closely with the severity of the clinical symptoms. A 2-day lag was(More)
To elucidate the influence of obstructive jaundice on the process of acute ulceration of the stomach under stress loading and to investigate the preventative effect of vagotomy, a series of experimental studies were carried out using SD rats. Animals were divided into four groups: Control, jaundice, vagotomy and jaundice with vagotomy. Each group was(More)
In order to observe the plasma gastrin, secretin and pancreatic polypeptide (PP) levels in an acid hypersecretion state, the pyloric antrum was transposed onto the transverse colon in 4 mongrel dogs with a Heidenhain pouch. The effects of meal and cimetidine on these gut hormones and acid secretion levels were observed for 6 hr after meals. After antrocolic(More)
In 7 patients with ulcerative colitis, the energy level in the large intestinal mucosa was investigated. ATP and energy charge in the intestinal mucosa in ulcerative colitis showed lower levels than those of control subjects. Therefore, energy-deficit may exist in the large intestinal mucosa in ulcerative colitis.
Of 114 patients with chronic pancreatitis, 19 (16.7%) has gastric or duodenal ulcers. Patients with moderate pancreatic exocrine dysfunction tended to show high acid output and low serum gastrin levels, while those with severe dysfunction had slightly lower acid output and higher serum gastrin levels. The higher the degree of pancreatic fib rosis, the(More)
The changes in gastric acid secretion and gastrointestinal hormone release were studied after biliary tract reconstruction to investigate the mechanism of gastric acid hypersecretion after a biliary diversion procedure. At follow-up, gastric acid output in patients with Roux-Y choledochojejunostomy was significantly higher than before the operation. In(More)
In 26 patients with Roux-Y choledochojejunostomy and 10 with jejunal interposition choledochoduodenostomy, gastrin-stimulated gastric acid secretion and serum levels of gastrin and secretin after feeding were examined before operation and at the time of follow-up. The follow-up levels of maximum acid output were higher than those before operation in each(More)