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Biomedical subjects

A Kohno

Publications and source records attributed to A Kohno.

At least 55 records · Page 3Linked to original sources
PubMed1990

[Breast cancer and B cell malignant lymphoma associated with Sjögren'ssyndrome--a case report and review of literature in Japan].

It is well known that some patients with Sjögren's syndrome develop lymphoproliferative disorders. Approximately 60 cases of Sjögren's syndrome associated with malignant lymphoma, predominantly of B cell origin, have been reported in Japan. On the other hand, fourteen cases of non lymphoid malignant neoplasm, including six of thyroid cancer and four of gastric cancer, have been recently presented in Japanese literature. However, cases of double malignant neoplasms in Sjögren's syndrome are very rare. We reported a case of Sjögren's syndrome associated with breast cancer and B cell malignant lymphoma in the paper. A 53-year-old female was seen with eye pain, xerostomia, finger pain and right parotid swelling in January, 1985. Keratoconjunctivitis sicca was found. She had had eye pain and Raynaud's symptom during the past seven years. Sialectasia of grade III by Rubin and Holtz was seen in sialography. Schirmer's test was positive. Pathological finding of sialadenitis in minor salivary gland confirmed diagnosis of Sjögren's syndrome. Laboratory findings showed leukocytopenia and polyclonal hypergammaglobulinemia. Rheumatoid factor and antinuclear antibodies including SS-A antibodies were positive. Tuberculin test was negative. Ratio of CD 4 per CD 8 T lymphocytes was increased in peripheral blood. She had history of breast cancer. Radical mastectomy, followed by irradiation was performed in 1980. Arthralgia and parotid enlargement were transiently diminished by administration of small amount of prednisolone. She was readmitted because of progressive bilateral parotid swelling in April 1988. Pathological finding of the parotid was consistent with malignant lymphoma of diffuse, small cell type (lymphoplasmacytic). Immunoperoxidase staining revealed positive cytoplasmic IgM, k in lymphoma cells.(ABSTRACT TRUNCATED AT 250 WORDS)

Breast Neoplasms↗
PubMed1990

[A case of tuberculous arthritis of shoulder].

A rara case of tuberculous arthritis of right shoulder was reported. Plain X ray and CT showed bone destruction in humerus and glenoid process and soft tissue swelling with calcification was also demonstrated. T2 weighted images showed extension of abscess clearly. And extension to bone marrow was showed on CT and T1 weighted MR images.

Arthritis, Infectious↗
PubMed1990

[A case of temporal arteritis associated with polymyalgia rheumatica and subclinical Sjögren's syndrome].

A case of temporal arteritis (TA) associated with polymyalgia rheumatica (PMR) and subclinical Sjögren's syndrome (sub SjS) was presented in this paper. A 76 year-old-male was admitted with headache, fever and weight loss in April 1987. Myalgia of upper extremities and of thighs developed during the past two months before admission. He also had noticed bilateral wrist pain. Physical examination revealed slight cord-like thickening of left temporal artery with tenderness. Cerebral angiography disclosed narrowing of frontal and parietal branches of left temporal artery. Temporal artery biopsy was consistent with TA. Diagnosis of PMR was made by Bird's diagnostic criteria. Although sicca symptoms were not seen, sialography revealed moderate sialectasis. Pathological finding of salivary gland was compatible with sub SjS. Possibility of occult lymphoma was eliminated by CT scanning or myelogram. Laboratory evaluation disclosed slight anemia, leukocytosis and thrombocytosis. Blood chemistry showed no abnormal finding except for hyperfibrinogenemia. Serological studies indicated positive C-reactive protein and slight elevation of alpha 2 and beta globulin fractions of serum protein. Either rheumatoid factors, antinuclear antibodies, anti-smooth muscle antibodies, cryoglobulin or circulating immune complexes were not detected. The HLA-B8 and DR3, frequently detected in TA and SjS, were not identified. Tuberculin test was negative. These results suggested that immunological aberration not caused by genetic factors but by senescence would induce presence of TA associated with both PMR and sub SjS.

Aged↗
PubMed1990

[Assessment of lumbar trabecular bone density by means of single energy quantitative CT in hospital control children and bone metabolic disorders. 1].

We studied the 3rd lumbar vertebral trabecular bone mineral density in 59 cross-sectional pictures of quantitative computed tomography (QCT) with CaCO3 phantom for 28 hospital control children and 30 cases of suspected bone metabolic disorders. The QCT value of bone mineral density of control children showed neither age dependency nor sexual difference before puberty: for males was 221.8 +/- 30.2 mg CaCO3/cm3 (Mean +/- SD) under 4 years, 218.1 +/- 39.7 at 5-9 years and 217.2 +/- 30.9 at 10-15 years; and for females 220.9 +/- 18.3 under 4 years and 240.0 +/- 29.4 at 5-9 years. The QCT values of bone mineral density in bed-ridden patients, children receiving glucocorticoids and children receiving anticonvulsants were significantly lower than that in control children (p less than 0.005). The QCT value of bone mineral density of bed-ridden patients was significantly lower than that of children receiving glucocorticoids and of children receiving anticonvulsants (p less than 0.05, p less than 0.005 respectively). Our study confirmed that single energy quantitative CT was very useful in pediatric clinical application.

Adolescent↗
PubMed1990

[MR imaging of splenic masses].

It has been reported that MR imaging of the spleen is unsuccessful in detecting focal lesions because there is not a significant difference in relaxation times between most tumors and surrounding normal spleen. We reviewed the MR imaging of 15 patients (5 cysts, 2 abscesses, 1 hemangioma, 5 malignant lymphomas, 2 metastatic tumors). In all cases, the difference in signal intensities between splenic tissue and mass lesions permitted detection of splenic lesions on MR images. But, malignant lesions were less visible than benign lesions.

Adult↗
PubMed1990

[CT findings of the benign tracheobronchial lesions with calcification].

In the benign tracheobronchial lesions with calcification, tracheobronchopathia osteochondroplastica, relapsing polychondritis and tracheobronchial amyloidosis were considered. CT demonstrated small nodules with calcifications at the trachea with or without deformity of tracheal wall in the case of tracheobronchopathia osteochondroplastica, swelling of tracheal cartilage with diffuse and multiple calcifications in the case of relapsing polychondritis and calcifications in the deep parts of tracheobronchial amyloid nodules. CT findings were able to differentiate those benign lesions. High-resolution CT is more useful in the distribution of abnormal calcification of these diseases.

Aged↗
PubMed1989

Marginal closure of composite restorations with the gingival wall in cementum/dentin.

The marginal leakage of five adhesive composites placed in class V cavities extending into the root was examined by immersing the specimens in China ink after thermal cycling. Clearfil F II-initial bond, Silar-Scotch Bond, and Miradapt-D21 materials did not show leakage when all cavity walls were totally etched, whereas they showed leakage at the dentinal/cemental wall when only enamel was etched. In either conditions Clearfil F II-New Bond materials did not show leakage and Miradapt material showed leakage. Manipulative variables affected the seal of Clearfil F II-New Bond materials. Insertion later than 3 minutes after applying New Bond material induced microleakage. The use of pressure under a matrix did not affect the seal. Maintaining dryness for 3 minutes at the etched dentinal/cemental margin and 1 minute at the etched enamel margin was sufficient to prevent microleakage. Finishing before the initial polymerization of the composite or lining the whole axial wall caused microleakage.

Acid Etching, Dental↗
PubMed1989

Purification of beta-amylase from alfalfa (Medicago sativa L.) seeds.

An amylase from alfalfa (Medicago sativa L. c.v. Moapa) seeds was purified by column chromatography and gel filtration, followed by chromatofocusing on Mono P HR 5/20. The last step was effective for separation of the alfalfa amylase to a homogeneous state. The purified amylase was identified as beta-amylase from the fact that only beta-maltose was formed by the enzymatic degradation of soluble starch. The molecular weight and specific activity of the beta-amylase (E1%(280 nm) = 18.3) were determined to be 61,000 and 1,077 A.U./mg, respectively. The beta-amylase activity was inhibited by the modification of sulfhydryl groups with p-chloromercuribenzoic acid. The optimum pH and isoelectric point of alfalfa beta-amylase were 7.0 and 4.8, respectively, which were different from other plant beta-amylases.

Amylases↗
PubMed1989

[The report of the 12th and 13th clinical practical training of the Tsurumi University School of Dental Medicine].

This report concerns the state of the patients and the progress of the 12th and 13th clinical practical training. A questionnaire was carried out with the trainees of the 13th clinical practical training and their leaders. Consequently it was learned that a trainee was in charge of ten patients on the average a year. He was able to complete the treatments of 3.5 patients, but was obligated to discontinue them for 1.4 patients, while handling over treatments for 5.2 patients to the next year's trainees or doctors. The progress of the clinical practical training was slow during the first 9 months but the pace increased rapidly during the last 3 months. The results of the questionnaire showed 37% of the trainees were satisfied with the present clinical practical training, but 17% of the trainees were not satisfied. On the other hand 15% of the leaders were satisfied with it, but 48% of the leaders were not satisfied.

Education, Dental↗
PubMed1989

[Three cases of pernicious anemia complicated with chronic thyroiditis--the evaluations of immunological abnormalities].

We reported 3 patients with pernicious anemia associated with chronic thyroiditis and evaluated their immunological abnormalities in this paper. Two patients were females and another was male. They were all advanced in age. Levels of gammaglobulin including IgG was elevated in patients' sera. Values of complement components were within normal ranges. Although organ specific autoantibodies against intrinsic factors, parietal cells and thyroidal tissue antigens were detected, organ non-specific autoantibodies such as anti-DNA and/or anti-ENA antibodies were negative in the patients' sera. Percentage of T cells in peripheral blood remained within normal ranges. However, ratio of helper T/suppressor T cells was reduced considering patients' age. Moreover, Mantoux tests were negative in all of three patients. These results suggested that impaired cellular immunity, particularly imbalance of T cell subsets, caused by senescence, simultaneously induced pernicious anemia and chronic thyroiditis in these patients.

Aged↗
PubMed1988

An outbreak of salmonellosis in newly imported cynomolgus monkeys.

Serious salmonellosis occurred in groups of cynomolgus monkeys newly imported into Tsukuba Primate Center for Medical Science from the Philippines in 1985. During the quarantine period, Salmonella typhimurium (29 strains) and S. stanley (1 strain) were isolated from 30 of 130 imported monkeys. Twenty-eight of the 30 infected monkeys excreted mainly watery diarrhea, and occasionally bloody mucous stool. Seven of the 28 clinical cases infected with S. typhimurium resulted in death or in moribund state. In both the small and large intestines of autopsied monkeys, acute inflammatory changes were observed.

Agglutinins↗
PubMed1988

The serodiagnosis of Campylobacter infection in infant cynomolgus monkeys (Macaca fascicularis) 2 to 18 weeks old by enzyme-linked immunosorbent assay.

We established the enzyme-linked immunosorbent assay (ELISA) for detecting antibodies to Campylobacter and applied it in defining the period of the primary infection of Campylobacter in infant cynomolgus monkeys (Macaca fascicularis). The antibody to Campylobacter spp. could be detected with only 0.25 mul of serum by using commercially available antigens and anti-cynomolgus monkey IgG antibody conjugated with alkaline phosphatase. The inhibition experiments using extracts of C. jejuni, C. fetus and Yersinia enterocolitica demonstrated that the established ELISA system could detect species-specific anti-C. jejuni and anti-C. fetus antibodies. The levels of antibodies to both C. jejuni and C. fetus were high in 2 weeks old infant cynomolgus monkeys, rapidly decreasing until 6 to 14 weeks of age. This result indicates that the antibodies detected in 2 week old infants were IgG antibodies of maternal origin transferred through placenta. The C. jejuni was isolated from infants when the level of maternal antibody became the lowest. Infant cynomolgus monkeys obviously developed IgG antibodies to C. jejuni within 4 weeks after infection. On the other hand, no antibody response to C. jejuni was found in two infants from which it could not be isolated throughout the observation period. As regards C. fetus infection, infants showed a poor antibody response although it was more frequently isolated than C. jejuni. In conclusion, the ELISA system established in the present study is useful for the serological diagnosis of C. jejuni infection during infancy in the cynomolgus monkey.

Animals↗