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Biomedical subjects

S Inaba

Publications and source records attributed to S Inaba.

At least 73 records · Page 4Linked to original sources

[Acute renal failure due to endocapillary proliferative glomerulonephritis in a patient with IBL-like T-cell lymphoma].

A 72-year-old man was admitted of generalized lymphadenopathy and oliguria on December 12, 1987. Laboratory findings revealed progressive renal impairment, polyclonal hypergammaglobulinemia, and reduction of serum complements. A cervical lymph node was typically suitable for histology of IBL-like T-cell lymphoma. The surface markers of lymph node were mainly CD2 (+) and CD3 (+) and clonal proliferation of lymphoma cells was proved by TCR-beta gene rearrangement. Renal biopsy to examine the pathogenesis of acute renal failure revealed endocapillary proliferative glomerulonephritis without invasion of lymphoma cells. Both lymphadenopathy and renal failure were improved by successful administration of prednisolone and hemodialysis. Although relapsed tumor was partially responded to vincristine and prednisolone, he died of alimentary tract bleeding. We reported a case of IBL-like T-cell lymphoma with acute renal failure due to endocapillary proliferative glomerulonephritis.

Acute Kidney Injury

[Altered expression of protooncogenes during clinical course in an AML case transformed from MDS].

The changes of expression of oncogenes in the mononuclear cells of MDS case was studied during his clinical course, in series. His bone marrow was considered to maintain its function partly in initial stage, since both peripheral blood and bone marrow responded to clinical episodes. However, his hematopoietic function was gradually impaired with the disease evolution to AML. We examined the expression of four oncogenes in the mononuclear cells of his three clinical stages, early RAEB-t, RAEB-t and AML, to study the cause of transformation from MDS to AML. Early RAEB-t cells expressed all oncogenes studied other than c-myb, while only c-myc was weakly observed in RAEB-t. AML cells expressed c-myc, c-jun and c-myb, except for c-fms. The expression of c-fms and c-jun of early RAEB-t was considered to reflect the monocytosis induced by infections, and the expressions of c-myb and c-myc of AML cells were regarded as one of malignant signs of tumor transformation. These findings suggest that the evolutional transformation of MDS to AML was affected by the altered expression of oncogenes.

Anemia, Refractory, with Excess of Blasts

[Pacemaker infection with superior vena cava thrombotic obstruction, followed by bacteremia: a case report].

Infection is one of the complications brought about sometimes by pacemaker implantation. This is a case report, showing superior vena cave obstruction after pacemaker implantation, followed by bacteremia after 5 years. Gallium-67 scintigraphy was the most effective method to survey the source of the infection. We performed the operation and found vegetation (1 cm x 1 cm) attaching to the pacemaker lead and an organized thrombosis in the superior vena cava. The lead and the vegetation were removed. The administration of antibiotics after the operation led to the patient's complete recovery. Post operative gallium-67 scintigraphy didn't reveal any sign of infection at the mediastinum.

Aged

Treatment of platelet-alloimmunization with cyclosporin A in a patient with aplastic anemia.

The development of alloantibodies to platelets is a major problem in the supportive management of thrombocytopenia in patients with severe aplastic anemia. We report here a case of aplastic anemia refractory to platelet transfusion. An immunosuppressant, cyclosporin A, which was used for the therapy of aplastic anemia, modulated alloimmunization to platelets in this patient, followed by repeated platelet transfusion. The treatment reduced platelet alloantibodies detected by anti-human immunoglobulin lymphocytotoxicity test, with change of the CD4/CD8 ratio in T lymphocytes in peripheral blood. These results suggest the usefulness of cyclosporin A for the prevention of platelet alloimmunization.

Adult

[bcl-2 gene rearrangement and its expression in tumor cells].

Both the rearrangement and the expression of the bcl-2 gene in Japanese hematopoietic tumor cells were studied by Southern and Northern blot hybridizations. The expression of the bcl-2 gene was studied in seven cultured cell lines and twenty clinical samples, including eleven non-lymphoid tumors and nine lymphoid tumors. All lymphoid tumors except one sample from a patient with ALL expressed the bcl-2 gene. The bcl-2 gene was strongly expressed in B cell tumors. This gene was also expressed in T-ALL samples studied, although the expression was not as marked as in the B cell tumors. Non-lymphoid tumors did not express bcl-2 gene. bcl-2 gene rearrangement was studied in five cultured cell lines and six clinical samples including four follicular lymphomas and two T-ALLs. No abnormal bcl-2 gene configurations were found in any of the clinical samples. Among the cultured cell lines, the BALL-1 line showed two-fold amplification. The frequency of bcl-2 rearrangement in Japanese follicular lymphomas is reported to be lower than that seen in the American follicular lymphomas. Nevertheless, the increased expression of the bcl-2 gene seen in the Japanese B cell tumors studied supports the contention that the bcl-2 gene plays an important role in the pathogenesis of B cell tumors.

Gene Expression

[A case of asthma exacerbated by sulfite contained in betamethasone].

Adverse reactions to preservatives contained in food and medications have been recognized with increasing frequency. We have recently seen an asthmatic patient in whom wheezing and dyspnea increased after injection of betamethasone. The patient was a 26-year-old woman who had had bronchial asthma since 1980. She was treated at another hospital for moderate wheezing and betamethasone injections were given in May 1988. After this treatment her condition deteriorated acutely and she was transferred to our hospital. To confirm the possible relationship between betamethasone (sulfite) and asthmatic attack, provocation challenge tests were conducted. Intradermal skin test revealed an immediate positive reaction to sodium bisulfite at a concentration of 100 mg/L. Challenge test with increasing amounts of sodium bisulfite showed a 52% decrease in FEV1, 50 min after inhalation of 5 mg/ml solution. In addition, another inhalation challenge was conducted by use of an Astograph. Rrs immediately increased during inhalation of 10 mg/ml solution. These results suggested that sulfite contained in betamethasone preparation provoked exaggerated bronchospasm in this patient.

Adult

[Clinico-pathologic evaluation of retroperitoneal lymph node metastasis in ovarian carcinoma].

Retroperitoneal lymph node dissection was performed in 18 cases of ovarian carcinoma. Of 18 patients, 8 (44.4%) patients had lymph node metastasis. It was found that 50.0% of patients with stage III and 100% of patients with stage IV had lymph node metastasis. Serous cystadenocarcinoma and poorly differentiated carcinoma were demonstrated to be the risk factors in lymph node metastasis. Lymph node metastasis was found to be significantly correlated with the volume of ascites, peritoneal cytology, or peritoneal dissemination. Patients without peritoneal dissemination or positive peritoneal cytology had no lymph node metastasis. Patients with bilateral ovarian tumors tended to have a higher incidence of lymph node metastasis than those with a unilateral ovarian tumor. The incidence of para-aortic lymph node metastasis was found to be higher than that of pelvic or inguinal lymph node metastasis. We concluded that in the clinical stage, serous cystadenocarcinoma, poorly differentiated epithelial carcinoma, ascites, peritoneal cytology, peritoneal dissemination and bilateral ovarian tumors were assumed to affect the incidence of retroperitoneal lymph node metastasis of ovarian carcinoma. It was suspected that the lymphatic spread of ovarian carcinoma had two routes: via ascites and peritoneal dissemination.

Ascitic Fluid

Serological studies of an SLE-associated antigen-antibody system discovered as a precipitation reaction in agarose gel: the HAKATA antigen-antibody system.

Current population studies indicate that the HAKATA antigen is one of the normal plasma proteins not yet completely characterized. The frequency of Japanese donor, patients and Swedish patients was 100%, 99.99% and 99.98%, respectively. Anti-HAKATA antibody production was found in three patients, all with systemic lupus erythematosus (SLE). Transient HAKATA antigen deficiency was found in 13 patients and appeared to be strongly associated with SLE (11 out of 13). None of the 14 SLE patients had a history of transfusion. It is therefore concluded that anti-HAKATA antibody is produced as one of the autoantibodies in SLE.

Antibody Formation

Prevention of transmission of human T-lymphotropic virus type 1 (HTLV-1) through transfusion, by donor screening with antibody to the virus. One-year experience.

To prevent the transmission of human T-lymphotropic virus, type 1 (HTLV-1) during blood transfusion, a program was implemented to screen donors for antibodies to the virus, using a newly developed, passive agglutination (PA) method. During the period April 1986 to March 1987, 675 recipients of donor blood in whom the antibody to HTLV-1 was not present before transfusion were followed for at least 50 days after transfusion. One of these 675 seroconverted despite the transfusion of screened blood, but this seroconversion rate (0.15%) represents a marked decrease from the rate of 8.3 percent prevalent before donor screening began. The rate in the Fukuoka area of donors seropositive for anti-HTLV-1 is 5.34 percent, as detected by the PA method and 1.80 percent, as assessed by the indirect immunofluorescence (IF) technique, with PA-positive but IF-negative blood units thus accounting for 3.5 percent (5.34-1.80) of the total blood donated. The seroconversion rate among recipients transfused with blood screened by IF (at Kyushu University Hospital only) from 1981 to 1985 was 0.41 percent, which was not significantly different from the rate of 0.15 percent observed after PA screening. The discrepancy between PA and IF in the rate of seropositivity was due, in part, to the higher sensitivity of PA in detecting anti-HTLV-1. It is proposed that all donor blood in areas where HTLV-1 is endemic be screened by PA before transfusion.(ABSTRACT TRUNCATED AT 250 WORDS)

Agglutination Tests

Treatment of CNS involvement of non-Hodgkin's lymphoma with short-term cerebrospinal irradiation, high-dose chemotherapy, and autologous bone marrow transplantation. A case report of a 12-year-old patient.

A 12-year-old patient with non-Hodgkin's lymphoma, who developed central nervous system (CNS) relapse, was successfully treated with the following new regimen: cerebrospinal irradiation (CSpRT), high-dose chemotherapy, and autologous bone marrow transplantation (ABMT). He received remission induction therapy comprising intrathecal methotrexate and systemic chemotherapy, followed by cranial and spinal irradiations in doses of 2,000 cGy in 10 fractions over 5 days, and 1,200 cGy in 6 fractions over 3 days, respectively. He then received chemotherapy comprising 4 infusions of 1 g/m2 cytosine arabinoside and an intravenous injection of 4 mg/kg ACNU. His bone marrow, collected and cryopreserved after the remission induction therapy, was infused immediately after the high-dose chemotherapy. The granulocyte and platelet counts reached the nadir level on days 10 and 6 after ABMT, respectively, gradually recovering to the normal level in about 1 month. Neither severe infection nor bleeding was noted during the aplastic phase. No neurological deficits have been observed for 12 months. The short-time CSpRT and high-dose chemotherapy followed by ABMT are thus demonstrated to reduce neurotoxicities and bone marrow toxicities and to produce a good therapeutic effect against CNS involvement in lymphoma.

Antineoplastic Combined Chemotherapy Protocols

Potentiation of growth-inhibitory activity of 9-beta-D-arabinofuranosyladenine by 2'-deoxycoformycin in human cultured cell lines derived from leukemias and lymphomas.

Growth-inhibitory activity of 2'-deoxycoformycin (DCF) and 9-beta-D-arabinofuranosyladenine (Ara-A) used either singly or in combination was assessed in 30 human cultured cell lines (seven T-cell, nine B-cell, five non-T,non-B and nine myeloid cell lines) derived from leukemias and lymphomas. DCF had little activity even at 100 microM on any of the cell lines, while Ara-A had an obvious inhibitory effect on them, especially on non-T,non-B cell lines at 10 microM or less. Lymphoid cell lines were apparently more sensitive to the combined use of Ara-A and DCF than myeloid cell lines. DCF potentiated the antiproliferative activity of Ara-A not only in T-cell lines with high adenosine deaminase (ADA) activity, but also in some other cell lines with low ADA activity. DCF was stable in the culture medium, but Ara-A in the medium containing cultured cells was rapidly inactivated. DCF completely inhibited the inactivation of Ara-A in the medium containing P12/ICH or NALM-6, but not in the medium containing Daudi. This suggests that there is some unknown mechanism(s) of inactivation of Ara-A other than ADA in Daudi, which was insensitive to Ara-A in the presence of 1 microM DCF. The capacity of DCF to inhibit degradation of Ara-A in the medium containing these cultured cells correlated with the level of Ara-A sensitivity potentiated by DCF. In all seven T-cell lines, seven of the nine B-cell lines, all five non-T,non-B cell lines, and only three of nine myeloid cell lines, the IC50 value for Ara-A decreased to 5 microM or less in the presence of 1 microM DCF. These results suggest that the combination of DCF and Ara-A may be effective against various types of lymphoid malignancies and some myeloid leukemias.

Adenosine Deaminase

[Variability of respiratory function variables in healthy aged men].

We studied six healthy young males (young group; mean age 30.0 +/- SD 1.8 years, FVC 4.5 +/- 80.45 l and FEV1.0/FVC 87.6 +/- 4.3%), and five aged healthy males (aged group; age 63.8 +/- 3.0 years, FVC 3.40 +/- 0.22 l and FEV1.0/FVC 75.9 +/- 3.2%) to evaluate the variability of pulmonary function. We measured flow-volume curves, closing volumes, functional residual capacities (FRC) and airway resistances (Raw) five times in different days in each person. The coefficients of variation in FVC and FEV1.0 in both groups were less than 5%, and there were no significant differences in these coefficients between the two groups. Although the coefficients in FEV1.0/FVC in both group were less than 5%, there was a significant difference between the two groups. The coefficients in flow at 50% FVC (V50), maximal midexpiratory flow (MMF) and peak expiratory flow rate (PEFR) in the aged group were significantly larger than those in the young group. The coefficients in closing volume, FRC, Raw and specific airway conductance (SGaw) using body plethysmography exceeded 10% in both groups, and the coefficients in Raw and SGaw in the aged group were significantly larger than those in the young group. These results suggest that aging worsens the variabilities of respiratory function in FEV1.0/FVC, MMF, V50, Raw and SGaw.

Adult

[Renal distribution of collagen types III, IV and V in various glomerular diseases].

The purpose of this study is to examine the immunochemical changes of the glomerular basement membrane (GBM) and the mesangium, in pretreated paraffin-embedded sections with trypsin by utilizing monoclonal antibodies to type III (anti-III), type IV (anti-IV) and type V (anti-V) collagens. We observed 6 normal kidneys and 44 kidneys with various renal diseases. In normal human kidney the staining with anti-IV demonstrated GBM, mesangium, Bowman's BM, tubular BM and capillary BM. Anti-V was also seen in the interstitium. On the other hand, anti-III stained only interstitium. Thickened GBM in membranoproliferative glomerulonephritis (MPGN) and diabetic nephropathy, and irregular GBM in Membranous Nephropathy and Alport's syndrome were also evident in anti-IV stain, while widened mesangial area was seen in anti-V rather than anti-IV stain. In severely proliferative GN, anti-III as well as anti-IV and anti-V was detected in the mesangium in spite of existence of neither adhesion nor Bowman's gap. In MPGN type II, anti-III was observed along the GBM. In obsolescent glomeruli, anti-IV was not always detected although anti-V was constantly seen. On the other hand, anti-III was markedly positive in the crescents and obsolescent glomeruli. These results suggest that it is possible for mesangial, endothelial and epithelial cell to produce several types of collagens and type III collagen is closely related to the process of the glomerular obsolescence.

Basement Membrane

Long-term follow-up of membranoproliferative glomerulonephritis type II and pregnancy: a case report.

A 24-year-old female was diagnosed as having membranoproliferative glomerulonephritis type II (or dense deposit disease), 11 years prior to becoming pregnant. The patient's first renal biopsy was performed 5 years after the onset of her renal symptoms. This biopsy was compared to a second renal biopsy taken just before the patient became pregnant. The second renal biopsy only showed a slight progression in the disease process. During the course of pregnancy, neither renal insufficiency nor hypertension were clinically evident. However, both an increase in proteinuria and a transient hypoalbuminemia were observed. The pregnancy, labor and delivery, and postpartum course for both the mother and child were without complications. Cases of membranoproliferative glomerulonephritis type I and pregnancy have been reported. However, to our knowledge, there are few reports documenting the outcome of pregnancy when a patient has membranoproliferative glomerulonephritis type II. We suggest that it is possible for a patient with membranoproliferative glomerulonephritis type II to have an uneventful pregnancy if she has neither hypertension nor renal insufficiency.

Adult

[The changes of mRNAs of both c-myc and MDR1 in CML-bc tumor cells during the clinical course: a case report].

We examined the expressions of both c-myc and MDR1 in four samples isolated from a CML-bc patient in series during the clinical course. A 46-year-old man was diagnosed as chronic phase of CML in june 1985. In February 1987, the diagnosis of blastic transformation was made because of marked increase of blastic cells. He was initially treated with vincristine (V) and prednisolone (P) successfully. However, the effect of VP therapy was gradually attenuated, so that combined chemotherapies including anthracyclines were started. After the treatments of several courses, tumor cells acquired the refractory to both vincristine and adriamycin . He died in January, 1988. Northern blot hybridization studies revealed no expression of MDR1 mRNAs. However, the expression of c-myc was increased in the latest sample. These findings suggest that the expression of c-myc mRNA in tumor cells of this case reflects one characteristic of clinically refractory states to chemotherapies.

Antineoplastic Combined Chemotherapy Protocols