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T Aoki

Publications and source records attributed to T Aoki.

At least 685 records · Page 38Linked to original sources
PubMed1994

[Does clinical stage have any influence on the results of provocation tests in allergic children? I. The best clinical stage for food provocation tests].

To investigate the best clinical stage for food provocation tests, twenty allergic patients who had early allergic reactions induced by any kind of food were tested. The patients were classified into two groups. Group I; open-food challenge tests were performed on eleven patients within 48 hours of admission. Group II; the tests were performed on nine patients seven or more days after admission. In these food provocation tests, there were nine positive results in Group II (p < 0.05). The percentage of eosinophils in the blood was higher in cases of positive provocation than in cases of negative provocation (p < 0.05). Moreover the percentage of eosinophils decreased after admission day by day in the provocation-negative patients of Group II, but there was no change in the provocation-positive patients. These results suggest that individual sensitivity to food decreased after admission. Therefore, in order to assess the actual sensitivity of allergic children it is necessary that food provocation tests be performed within two days of admission or before admission.

Child↗
PubMed1994

[A case of a huge malignant lymphoma in the lesser omentum showing a long-term survival after combined treatment of surgery and VEP-THP chemotherapy].

A 33-year-old house wife with malignant lymphoma in the lesser omentum was treated with a combination of surgery and VEP-THP chemotherapy (consisting of pirarubicin, cyclophosphamide, fildesin and predonine). Complete remission has been observed by reduction surgery and subsequent chemotherapy of VEP-THP. Although mild bone marrow suppression was seen during the chemotherapy, gastrointestinal toxicity and alopecia were minimal, which led to 10 complete courses of VEP-THP regimen. The patient has been in good health 5 years after the operation with no sign of recurrence. This case indicates that even advanced malignant lymphoma may be successfully treated with a combination of surgery and proper chemotherapy.

Adult↗
PubMed1994

[Early phase II study of FUT-187 (sepimostat mesilate) on reflux esophagitis--mainly on postgastrectomy reflux esophagitis].

An early phase II clinical study with the proteolysis inhibitor FUT-187 was carried out on patients with reflux esophagitis. FUT-187 was administered orally at the dose of 300 mg/day or 400 mg/day four times daily, after meals and at bedtime, for 4 consecutive weeks. The total number of patients admitted to this study was 40, of whom 9 were assigned to 300 mg/day group and 31 to 400 mg/day group. The rate of effectiveness on postgastrectomy reflux esophagitis was 88% (7/8) in 300 mg/day group and 85%(22/26) in 400 mg/day group when "improved" or better final general improvement ratings were taken into consideration, and 75% (6/8) in 300 mg/day group and 69% (9/13) in 400 mg/day group when "improved" or better endoscopic general improvement ratings were used. The overall safety rating "no problem as to the drug safety" was 89% (8/9) in 300 mg/day group and 71% (22/31) in 400 mg/day group. The main side effect was diarrhea, which was experienced in 6 patients in 400 mg/day group. However, it was resolved by discontinuation of the drug treatment. Other symptoms of gastrointestinal upsets, such as nausea and anorexia, were also induced. Based on these results, it may be concluded that FUT-187 can be a drug with clinical utility that benefits postgastrectomy reflux esophagitis at the dose level of 300 mg/day or less.

Administration, Oral↗
PubMed1994

[Immunohistochemical studies on mycobacteria in tuberculous necrotizing granulomas].

For the purpose to know the pathogenesis of caseous necrosis in tuberculous lesion, authors compared the presence and the number of mycobacteria in the pulmonary tubercles of various histological types. Forty pulmonary tubercles obtained from 16 patients (9 males, 7 females; mean age 51) were examined. By Ziehl-Neelsen (ZN) method, acid-fast bacilli were detected in 40% of 5 proliferative, in 12.5% of 24 productive and none of 11 sclerotic granulomas. By immunohistological staining with anti-BCG antiserum, positive staining was observed in 60%, 87.5% and 91% of each type of granuloma, respectively. Types of necrosis were classified by silver-staining as necrosis after exudative reactions (EN), necrosis after productive reactions (PN) and filled materials after softening and liquification of necrotic lesions (LN). EN was observed in 24 tubercles, and mycobacteria were stained in 8% of EN by ZN method and in 75% by immunohistological method. PN was observed in 21 tubercles, and mycobacteria were detected in none and 5% of such type of necrosis by respective method. LN was observed in 28 tubercles, and mycobacteria were detected in 11% and 71% of these lesions by respective method. So, positive ratio by immunochemical method was significantly higher in EN and LN than in PN. Further, mycobacteria were stained with anti-BCG antiserum as granules and the number of such granules were much more numerous in EN and LN than in PN (p < 0.01). From these results, it was suggested that necrosis might occur by different mechanisms in exudative reactions and in productive reactions.

Adult↗
PubMed1994

[A study of DNA heterogeneity on gastric cancer with serosal invasive exposure].

In order to assess clinical significance, the DNA content in gastric cancer with serosal invasive exposure from 50 patients was determined by flow cytometry. The DNA histograms could be measured in two different vertical portions, on the mucosal and serosal sides. DNA heterogeneity was found in 15 patients (30.0%). These cases were divided into 4 groups according to the combination of DNA ploidy patterns. There were no significant differences in clinicopathological characteristics or survival rate between these 4 subgroups. Furthermore, the serosal invasion index (SII) defined as the ratio of serosal extent to mucosal extent was examined to determine the malignancy potential. All cases were divided into 2 groups, high SII and low SII, according to the value of SII. The survival rate was significantly lower in the high SII-aneuploid group compared with the low SII-diploid group. These results suggested that DNA analysis, subclassified by the serosal invasion index, is useful for assessment of the patient's prognosis.

DNA, Neoplasm↗
PubMed1994

[How extensive should lymph node dissection be done for the surgery of the left lung cancer?].

Mediastinal lymph node dissection for cancer of the left lung is more difficult than for cancer of the right lung because of the presence of aorta. Location and frequency of lymph node metastasis were examined for 231 left lung cancer patients who underwent pulmonary resection and mediastinal lymph node dissection, and survival rate of them was evaluated. Subaortic (# 5), paraaortic (#6), subcarinal (#7), tracheobronchial (#4) lymph nodes were the most frequently involved N 2 nodes. 5-year survival rate of the patients who had #4, #5, #6, #7, #8 or #9 lymph node metastasis was 20.7%. #4, #5, #6, #7, #8 and #9 should be dissected for the surgery of the left lung cancer.

Carcinoma, Non-Small-Cell Lung↗
PubMed1993

Effect of antrectomy and drug-induced achlorhydria on urinary excretion of N-terminal big gastrin immunoreactivity in rats.

Immunoreactivities of urinary N-terminal big gastrin and serum C-terminal gastrin were determined in intact and antrectomized rats by radioimmunoassay using two antisera specific for N- and C-termini of big gastrin, respectively. Gel filtration of urine extract from intact rat showed a single giant peak of N-terminal big gastrin immunoreactivity eluted in a later position than 1-17 gastrin-34, indicating that N-terminal peptides smaller than 1-17 gastrin-34 are excreted in urine. Serum C-terminal gastrin concentration in antrectomized rats was about one sixth that in intact rats. Urinary excretion of N-terminal big gastrin in antrectomized rats was about one sixth that in intact rats. 2 week treatment with E3810, a proton pump inhibitor, (40 mg/kg/day, s.c.) induced urinary excretion of N-terminal big gastrin in parallel with a marked increase in serum C-terminal gastrin concentration in intact rats. Antrectomy completely prevented both the increase in urinary excretion of N-terminal big gastrin and the elevation of serum C-terminal gastrin induced by administration of E3810. There was an excellent correlation between serum concentration of C-terminal gastrin and urinary excretion of N-terminal big gastrin. These results suggest that urinary N-terminal big gastrin, which mostly originates from the gastric antrum, is a useful indicator of gastrin secretion in the rat.

2-Pyridinylmethylsulfinylbenzimidazoles↗
PubMed1993

Developmental changes in the respiratory chain of Ascaris mitochondria.

The Ascaris larval respiratory chain, particularly complex II (succinate-ubiquinone oxidoreductase), was characterized in isolated mitochondria. Low-temperature difference spectra showed the presence of substrate-reducible cytochromes aa3 of complex IV, c+c1 and b of complex III (ubiquinol-cytochrome c oxidoreductase) in mitochondria from second-stage larvae (L2 mitochondria). Quinone analysis by high-performance liquid chromatography showed that, unlike adult mitochondria, which contain only rhodoquinone-9, L2 mitochondria contain ubiquinone-9 as a major component. Complex II in L2 mitochondria was kinetically different from that in adult mitochondria. The individual oxidoreductase activities comprising succinate oxidase, and fumarate reductase were determined in mitochondria from L2 larvae, from larvae cultured to later stages, and from adult nematodes. The L2 mitochondria exhibited the highest specific activity of cytochrome c oxidase, indicating that L2 larvae have the most aerobic respiratory chain among the stages studied. The Cybs subunit of complex II in L2 and cultured-larvae mitochondria exhibited different reactivities against anti-adult Cybs antibodies. Taken together, these results indicate that the complex II of larvae is different from its adult counterpart. In parallel with this change in mitochondrial biogenesis, biosynthetic conversion of quinones occurs during development in Ascaris nematodes.

Animals↗
PubMed1993

Cross-linking of egg white riboflavin-binding protein by calcium phosphate.

No larger molecular weight component appeared in the high-performance gel chromatogram when calcium alone was added to the riboflavin-binding protein solution (RfBP), indicating that calcium alone did not aggregate it. RfBP bound calcium, but the amount of bound calcium decreased markedly upon dephosphorylation. Cross-linked RfBP, which was detected by high-performance gel chromatography using simulated milk ultrafiltrate as the effluent, was formed when calcium and phosphate were added. Cross-linking of RfBP was confirmed by ultracentrifugal analysis. RfBP was found to be cross-linked through its phosphate groups, since no cross-linked fraction was detected when calcium and phosphate were added to a dephosphorylated RfBP solution. RfBP cross-linked by calcium phosphate formed at 12-20 mM calcium, 13-17 mM phosphate, and 10 mM citrate was a dimer, since its retention time was consistent with that of the dimer cross-linked by glyceraldehyde. The physiological function of phosphate groups of RfBP was also discussed.

Animals↗
PubMed1993

Cloning and characterization of three hemolysin genes from Aeromonas salmonicida.

Two hemolysin genes (ASH3 and ASH4) of Aeromonas salmonicida strain 17-2 and one (ASH1) of A. salmonicida ATCC14174 were cloned into the cosmid vector charomid 9-36 in Escherichia coli DH1. The overall amino acid sequence of the ASH3 was similar to that of the aerolysins of Aeromonas hydrophila and Aeromonas sobria, and hemolysins AHH3, AHH4, and AHH5 of A. hydrophila, and hemolysin ASA1 of A. sobria. The sequence of ASH4 was similar to that of the AHH1 hemolysin of A. hydrophila. The ASH4 hemolysin contains some homologous sequence regions of the Vibrio vulnificus and Vibrio cholerae cytolysin-hemolysin. Both ASH3 and ASH4 DNA probes reacted with all 104 strains of A. salmonicida, whereas the ASH1 DNA probe did not hybridize with any of the 104 strains studied except strain ATCC14174. ASH1 and ASH3 were broad spectrum hemolysins with most activity against rabbit and horse erythrocytes, respectively, whereas ASH4 hemolysin did not lyse bovine and horse erythrocytes. ASH3 and ASH4, but not ASH1, were activated by trypsin.

Aeromonas↗
PubMed1993

Primary neurilemoma of the thyroid gland: report of a case.

Neurilemoma, like other non-epithelial tumors, seldom occurs in the thyroid gland. A 57-year-old man was first referred to our hospital with an asymptomatic anterior neck tumor. A solid tumor was detected in the right lobe of the thyroid and an enucleation of the thyroid tumor was performed. The tumor was 35 x 33 x 33 mm in size, and diagnosed as Antoni A type neurilemoma. We were only able to find seven previously reported detailed cases of primary neurilemoma of the thyroid gland. A review of these cases, however, revealed that neurilemoma tends to develop in the right lobe of the thyroid gland. An operation is thus considered necessary and an enucleation of the tumor is appropriate.

Humans↗