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Biomedical subjects

A Ono

Publications and source records attributed to A Ono.

At least 271 records · Page 15Linked to original sources
PubMed1979

Analysis of pure pancreatic juice in patients with chronic alcoholism.

To elucidate early biochemical changes of pancreatic juice and their reversibility in chronic alcoholics, pure pancreatic juice was collected from 23 chronic alcoholics by endoscopic retrograde catheterization of the papilla. Samples were collected at 1 minute intervals for 20 minutes after intravenous injection of secretin (Eisai, 1 U/kg) and for 10 minutes after CCK-PZ injection (Boots, 1 U/kg). Volume, bicarbonate concentration, protein concentration and three hydrolases were determined. Following results were obtained. (1) Five patients showed hypersecretory state. Four of the five patients showed hyperconcentration of protein. (2) Seventeen patients showed hyposecretory state. Lipase secretion was most frequently affected (94%). Maximal bicarbonate concentration was the next to be affected (82%). Amylase and chymotrypsinogen secretion were less frequently affected (65%). Flow rate was least frequently affected (24%). (3) It was suggested that exocrine dysfunction in chronic alcoholics is reversible in an early stage and that sequence of events with advancement of the stage is hypersecretion, hyperconcentration of protein, normalization of water secretion with a decrease in lipase secretion and maximal bicarbonate concentration, a decrease in amylase and chymotrypsinogen output, and finally a decrease in flow rate.

Adult↗
PubMed1978

Analysis of human pure pancreatic juice in chronic pancreatitis and cancer of the pancreas.

Pure pancreatic juice was collected from 8 control subjects, 12 patients with chronic pancreatitis and 4 patients with cancer of the pancreas by endoscopic retrograde cannulation of the papilla. Samples were collected at 1 minute intervals for 20 minutes after rapid intravenous injection of secretin (Eisai, 1 U/kg) and for 10 minutes after rapid intravenous injection of CCK-PZ (Boots, 1 U/kg). Determinations of volume, bicarbonate concentration and three hydrolases (amylase, chymotrypsinogen and lipase) were made. Our tentative conclusions are (1) pancreatic enzymes are likely to be affected one after another, not in parallel fashing, in chronic pancreatitis and in cancer of the pancreas, (2) bicarbonate concentration and chymotrypsinogen or lipase are most susceptible in chronic pancreatitis and lipase secretion seems to be more susceptible than other parameters in cancer of the pancreas. Amylase is the least affected enzyme in both pancreatic diseases, and (3) determinations of chymotrypsinogen and/or lipase should be preferably performed among hydrolytic enzymes in the evaluation of exocrine pancreatic function in chronic pancreatitis and cancer of the pancreas.

Adult↗
PubMed1978

Studies on human pure pancreatic juice collected by endoscopic retrograde catheterization of the papilla.

Pure pancreatic juice was collected from 8 subjects by endoscopic retrograde cannulation of the papilla. Samples were collected at 1 minute intervals for 20 minutes after rapid intravenous injection of secretin (Eisai, 1u/kg) and for 10 to 15 minutes after rapid intravenous injection of CCK-PZ (1 U/kg). Three hydrolases (amylase, chymotrypsinogen and lipase) showed nonparallel secretory pattern. Lipase was proportionally more stimulated than chymotrypsinogen and chymotrypsinogen was more stimulated than amylase by CCK-PZ stimulation. However, in one subject the secretion of three hydrolases was parallel and in another subject lipase and chymotrypsinogen showed parallelism. Samples collected at "wash out" period showed quite high enzyme and protein concentration with specific activity and enzyme ratio not different from those of samples collected at peak period of CCK-PZ stimulation. Normal ranges were estimated in peak flow rate per minute, peak enzyme concentration, specific activity of enzymes, maximal enzyme output per minute and maximal bicarbonate concentration.

Amylases↗
PubMed1978

Adult human autoimmune thymus transplantation into nude mice - functioning of human thymus epithelium in nude mice.

Thymuses from patients with autoimmune disease were transplanted into nude mice. The thymus transplants survived for over 40 days and evidence of restoration of thymic function was observed. The de facto loss of human thymocytes from the implanted tissue resulted in an in vitro culture of pure thymus epithelium. The results suggest that adult human autoimmune thymus has the functional ability to restore immunocompetence for a thymusless mouse, and that human "thymic hormone" is a substance which does not have species specificity. This new approach to the functional activity of thymus epithelium may also be useful for a study in the pathogenesis of autoimmune disease.

Adult↗
PubMed1978

In vitro culture of thymic epithelial cells from various autoimmune diseases: its thymosin-like effect on human peripheral lymphocytes.

We succeeded in the culture of the thymic epithelium which obtained from the patients with various autoimmune diseases aged from 20 to 65 years whose thymuses should have already been involuted with decreased thymic function. The mean percentage of active rosette-forming cells significantly increased after the incubation with thymic monolayer culture medium. These observations suggest that thymic epithelia in autoimmune diseases produce thymosin-like factor(s) in culture medium.

Adult↗
PubMed1977

HLA antigens and myasthenia gravis in Japan.

Recent studies have noted an increased association of the histocompatibility antigen HLA-B8 with myasthenia gravis in Caucasian patients. The HLA types of 63 Japanese patients with myasthenia were compared to those of 271 controls. The present study was designed to assess correlations between HLA antigens, sex, age at onset, the presence of autoantibodies and thymic morphology. HLA-B12 was increased Japanese patients, especially females with early age at onset, and in addition it was significantly correlated with thymic hyperplasia. HLA-B5 was frequently found in the patients with thymoma. Statistically the most frequent haplotype found in this disease was HLA-A10-HLA-B12.

Adult↗
PubMed1977

HLA antigens and ulcerative colitis in Japan.

The HLA antigens in 44 cases of ulcerative colitis and 271 control individuals in Japan were studied. The NIH tissue typing method was used according to the new leukocyte nomenclature adapted by the WHO Committee. In normal Japanese populations, the HLA antigens, which were of high frequency, were HLA A2(37.3%), A9(60.9%) and B5 (40.6%). On the contrary, the significantly high frequency of HLA B5 was demonstrated in ulcerative colitis, compared with that in control. Moreover, HLA B5 in cases with ulcerative colitis excluding those with proctitis only, was found with higher frequency than that in total cases. Although the most frequent haplotype was HLA A9-B5 in control, so frequent haplotype was not found in ulcerative colitis. A family study revealed no significant diathesis on the hapolytpe of HLA in ulcerative colitis. The relationship between MLC locus and ulcerative colitis was not yet clarified from the study of one family whose two members suffered from ulcerative colitis.

Adult↗