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S Tagawa

Publications and source records attributed to S Tagawa.

At least 73 records · Page 4Linked to original sources
PubMed1995

Laminin and fibronectin promote the chemotaxis of human malignant plasma cell lines.

We examined chemotaxis of human plasma cells (PCs) in response to extracellular matrix proteins (ECMs) in the human PC cell lines FR4ds and OPM-1ds. The FR4ds cells expressed beta 1+, beta 3-, alpha 2-, alpha 3-, alpha 4+, alpha 5+, alpha 6+, and alpha v+ integrins, whereas the OPM-1ds cells expressed beta 1+, beta 3-, alpha 2-, alpha 3+, alpha 4+, alpha 5-, alpha 6+, and alpha v+. Fibronectin (FN) and laminin (LN) promoted the chemotaxis of the PCs. An inhibitory assay with anti-integrin monoclonal antibodies (MoAbs) showed that anti-alpha 4 MoAb partially inhibited the chemotaxis of FR4ds and completely inhibited the chemotaxis of OPM-1ds. Anti-alpha 5 MoAb alone had no effect on either of these two lines. Nevertheless, anti-alpha 5 MoAb completely inhibited chemotaxis when it was added with anti-alpha 4 in FR4ds, demonstrating a novel complementary role of VLA-5 toward VLA-4 in the chemotaxis induced by FN. LN facilitated chemotaxis both in OPM-1ds expressing alpha 3 and alpha 6 integrins and in FR4ds expressing alpha 6 integrin alone. Anti-alpha 6 MoAb completely inhibited FR4ds chemotaxis, whereas anti-alpha 3 and -alpha 6 MoAb had synergistic inhibitory effects on the chemotaxis of OPM-1ds. These results indicated that the distribution of PCs in human tissue are determined by at least two factors: the concentration of the ECM proteins FN and LN and the expression of integrins.

Antibodies, Monoclonal↗
PubMed1995

Interphase and metaphase detection of the breakpoint of 14q32 translocations in B-cell malignancies by double-color fluorescence in situ hybridization.

The breakpoint of 14q32 translocations found in B-cell malignancies was delineated specifically in both metaphase spreads and interphase nuclei by double-color fluorescence in situ hybridization (FISH) using bacteriophage clones containing the human immunoglobulin gamma chain gene locus (Ig gamma) and a cosmid clone, CY24-68, containing VH segments. CY24-68 is more telomeric than Ig gamma, separated by approximately 1 megabase (Mb). FISH studies were performed on four patients with non-Hodgkin's lymphoma (NHL), one with acute lymphoblastic leukemia (ALL), one with plasma cell leukemia (PCL), and three cell lines. In each patient with t(8;14), t(14;18), and t(3;14), the signal of Ig gamma gene was observed on der(14) and that of CY24-68 at respective partner sites of these translocations, 8q24.1, 18q21.3, and 3q27. Interphase nuclei with a signal of Ig gamma clearly separated from that of CY24-68 were more frequently encountered in all of the patients (45% to 74%) than those in normal controls (4% to 5%). Even in cases where only interphase nuclei were available for FISH studies, 14q32 translocations are detected as shown in two patients each with NHL and t(11;14)-carrying PCL. In two cell lines, HS-1 derived from ALL carrying t(8;14) and FR4 derived from a plasmacytoma carrying a complex form of t(8;14), the signal of Ig gamma was observed at the breakpoint region 8q24.1 of the der(8) in addition to the der(14), indicating that translocation event occurred within the Ig gamma locus. Intense Ig gamma signal was found at the breakpoint region on the der(14)t(11;14) in HBL-2 derived from NHL, indicating amplification of the Ig gamma gene, and presumably the resultant chimeric DNA between Ig gamma and DNA sequences at 11q13. The present approach allowed us to unequivocally detect tumor-specific breakpoints of 14q32 translocations. Furthermore, interphase FISH provides a rapid diagnostic procedure to detect 14q32 translocations in B-cell malignancies.

Burkitt Lymphoma↗
PubMed1995

Polymorphic reticulosis is a neoplasm of large granular lymphocytes with CD3+ phenotype.

BACKGROUND: Polymorphic reticulosis, a type of lethal midline granuloma (LMG), has been referred to as nasal T-cell lymphoma (NTL) because of its proliferating cells' positive reactivity to anti-T-lymphocyte antibodies. Recently, several studies have suggested that proliferating cells in NTL may be natural killer (NK) in nature. NK cells and human nonmajor histocompatibility-restricted cytotoxic T-lymphocytes have the morphology of large granular lymphocytes (LGL) (i.e., a high cytoplasmic:nuclear ratio and cytoplasmic granules). Whether NTL-LMG possesses an LGL morphology is examined in this study. METHODS: Two lymph node smears, peripheral blood showing a leukemic picture, and an electron microscope (EM) examination of a cutaneous lesion, respectively, were obtained from four patients with NTL-LMG. Immunohistochemical examination of the proliferating cells and of the Epstein-Barr virus (EBV) genome by both polymerase chain reaction and in situ hybridization also were performed. RESULTS: All patients presented with necrotic and granulomatous lesions in the upper respiratory tract. Histology showed polymorphous cellular infiltrates containing large atypical cells with positive reaction to CD3 (three patients), CD43 (two patients), CD45RO (two patients), and OPD4 (one patient). Imprint smears revealed azurophilic large membrane-delimited granules in an ample cytoplasm, which was confirmed by EM. The presence of the EBV genome in the tumor cells was observed in one patient. CONCLUSION: The current findings showed that NTL-LMG or polymorphic reticulosis is a proliferation of LGL with a CD3+ phenotype.

Adult↗
PubMed1995

Malignant melanoma with mesenteric metastasis causing an intrapelvic abscess: report of a case.

We present herein the case of a 66-year-old woman with disseminated malignant melanoma in whom a metastasis in the ileal mesentery ruptured into the peritoneal cavity causing an acute abdomen. The patient suddenly developed lower abdominal pain and a computed tomography (CT) scan of the pelvis confirmed the presence of an intrapelvic abscess. At emergency laparotomy, a 10 x 10 cm ruptured metastatic melanoma was found in the ileal mesentery, which demonstrated no communication with the ileum itself. To our knowledge, no other case of an acute abdomen being caused by the rupture of mesenteric metastatic melanoma lacking any communication with the bowel lumen has ever been reported.

Abdomen, Acute↗
PubMed1995

Establishment and characterization of IRTA17 and IRTA21, two novel acute non-lymphocytic leukaemia cell lines with t(16;21) translocation.

The t(16;21)(p11;q22) translocation is an infrequent chromosomal abnormality, but seems specific to acute non-lymphocytic leukaemia (ANLL). We established two cell lines with t(16;21)(p11;q22) from the bone marrow of a patient with ANL in relapse. Their morphological, karyotypic, immunohistochemical and genetic features are examined. Although both cell lines show monocytoid features morphologically, they express only CD13 (My7) and CD34, and neither expressed monocytoid or lymphoid markers. Reverse transcription-polymerase chain reaction showed that both cell lines expressed a similar TLS-ERG chimaeric mRNA as a result of the t(16;21)(p11;q22) translocation. As far as we know, there is no report of a leukaemia cell line with t(16;21). These cell lines represent a useful tool for leukaemia research.

Adult↗
PubMed1995

[The expression pattern of adhesion molecules and their role of the tumor cells in patients with multiple myeloma].

The expression pattern of beta 1 integrin on the surface of tumor cells in patients with multiple myeloma (MM) is reviewed and compared with that of other B cell malignancies. The expression pattern of beta 1 integrin of plasma cells of healthy individuals was also compared with that of malignancies of plasma cells. Normal immature CD10+ B cell precursors in bone marrow are alpha 4+ and alpha 5+, while mature peripheral B cells are alpha 4+ and alpha 5+. In contrast to mature peripheral B cells, it is reported that plasma cells are alpha 4+ and alpha 5+. There are three points following in the phenotype characteristic of MM cells; (i) MM cells are alpha 4 strong positive, (ii) MM cells are beta 1 strong positive and (iii) MM cells are alpha 6strong positive. Because alpha 6+ cell lines of malignant plasma cells showed spread and chemotaxis on stimulation with laminin, alpha 6 beta 1 integrin might contribute of MM cells to transit laminin rich basement membrane of blood vessel to exit to the extravascular space. The difference of the phenotype between plasma cells and MM cells is the expression of alpha 5; plasma cells express alpha 5, but MM cells are lost in one half of the cases. The functional role of VLA-5 in MM cells is reviewed.

Amino Acid Sequence↗
PubMed1995

pH-dependent activity change of superoxide dismutase from Mycobacterium smegmatis.

Superoxide dismutase (SOD), purified from Mycobacterium smegmatis, was found to contain both manganese and iron. Since the Fe and Mn-reconstituted enzymes had specific activities of 190 and 2810 units/mg protein/g atom of metal/mol of subunit, respectively, the Mycobacterial SOD can be classified with SODs showing activity with either iron or manganese as the active-site metal (a cambialistic SOD). Mn-reconstituted enzyme showed an enzymatic reaction rate constant of 1.4 x 10(8) M-1 s-1 at pH 7.8. This rate only slightly increased with decreasing pH. Fe-reconstituted enzyme showed a rate constant of 2.7 x 10(7) M-1 s-1 at pH 7.8, but this rate increased with decreasing pH to become 1.7 x 10(8) M-1 s-1 at pH 5.7 with two pK values of 6.6 and 9.0. These results show that the metal specificity of the enzymatic activity of M. smegmatis superoxide dismutase shows manganese predominance at pH 7.8, but changes to be equal for either metal at acidic pH.

Electron Spin Resonance Spectroscopy↗
PubMed1995

[Establishment and usage of human multiple myeloma cell line].

It was known that malignancies of plasma cell (MPC) consists of three categories, one is multiple myeloma (MM), second is plasmacytoma, third is plasma cell leukemia. One of the aim of our review is that we listed MPC cell lines reported. It became clear from the list that the success of establishment of cell lines may expected only when trials are done concerning MM cells shown extra-medullary invasion cells from patients. In contrast, IL-6 dependent cell lines may established by chance and it may not depend on cell origin. The second aim of the article is to review the usage of cell lines of MPC. We chose 7 issues; one is the correlation between the proliferation and IL-6, second is the contribution of other cytokines to MPC lines, third is how to make human MM model in SCID mouse, fourth is the chromosomal abnormalities and oncogenesis, fifth is the contribution of fibronectin and MPC lines, sixth is the issue of osteoblast activating factor (OAF), finally, we discussed the tumour aberration of MPC lines. We expect that the accumulation of these acknowledges concerning MPC cell lines would contribute to the development of plasmacytology in the future.

Cell Line↗
PubMed1995

Effects of interferon-alpha on L-BCGF- and TNF-alpha-induced proliferation of hairy cell leukemia in Japan.

Interferon-alpha (IFN-alpha) is very effective in patients with hairy cell leukemia (HCL), although its mechanism of action is still unknown. To investigate this issue, we studied the in vitro response to IFN-alpha of a variant type of HCL, recently reported by us as the Japanese variant. Their clinical response to IFN-alpha (remission rate 35.7% in the multicenter study in Japan) was inferior to that of typical HCL (remission rate 80%; mean of previous reports). We found that both low molecular weight B-cell growth factor (L-BCGF) and tumor necrosis factor-alpha (TNF-alpha) induced the proliferation of HC from patients with the Japanese variant, as well as those with typical HCL. While, in typical HCL, IFN-alpha strongly inhibited the in vitro proliferation of HC induced by L-BCGF and TNF-alpha, the inhibitory effect of IFN-alpha on L-BCGF and TNF-alpha-induced proliferation was low in most Japanese variant patients. These in vitro findings may be related to the extent of clinical efficacy of IFN-alpha in the Japanese variant, obtained in the multicenter study. Since the degree of inhibition was parallel in L-BCGF- and TNF-alpha-induced proliferation in three patients examined simultaneously, it appeared that the antiproliferative effect of IFN-alpha is not specific to individual growth factors. Rather, IFN-alpha might affect fundamental growth mechanisms triggered by these factors.

Cell Division↗
PubMed1994

Detection of 14q32 translocations in B-cell malignancies by in situ hybridization with yeast artificial chromosome clones containing the human IgH gene locus.

Partner sites of 14q32 translocations found in B-cell malignancies were detected by fluorescence in situ hybridization (FISH) using yeast artificial chromosome (YAC) clones, Y20 and Y6, containing the human Ig heavy chain (IgH) gene locus. Y20 spans a 160-kb upstream and 40-kb downstream region of the JH segments on chromosome band 14q32.33. Y6 is 300-kb upstream of Y20, and spans a further 320-kb telomeric region. The human DNA sequences amplified by Alu polymerase chain reaction of the YAC clones were used as probes for FISH to study six patients with non-Hodgkin's lymphoma (NHL), one patient with acute lymphoblastic leukemia, and one cell line FR4 established from a plasmacytoma. Three telomeric YAC clones each specific for 3q, 8q, and 18q were also used to further characterize 14q32 translocations. The IgH YACs were successfully applied to detect cytogenetically invisible subtelomeric translocation of the IgH gene locus to each partner site in t(14;18), t(8;14), and t(14;19), and to identify t(3;14) (q27;q32.33) in three patients with 14q32 translocation of unknown origin. Furthermore, complex translocations involving more than three chromosomes were detected in an NHL patient with t(8;14), and t(3;12), and in the FR4 with der(14)t(8;14), der(8)dic(1;8), and del(1)(q21). The technique would be a useful tool in elucidating the mechanisms of a 14q32 translocation in B-cell malignancies.

Aged↗
PubMed1994

Acylcarnitine deficiency in chronic fatigue syndrome.

One of the characteristic complaints of patients with chronic fatigue syndrome (CFS) is the skeletal muscle-related symptom. However, the abnormalities in the skeletal muscle that explain the symptom are not clear. Herein, we show that our patients with CFS had a deficiency of serum acylcarnitine. As carnitine has an important role in energy production and modulation of the intramitochondrial coenzyme A (CoA)/acyl-CoA ratio in the skeletal muscle, this deficiency might induce an energy deficit and/or abnormality of the intramitochondrial condition in the skeletal muscle, thus resulting in general fatigue, myalgia, muscle weakness, and postexertional malaise in patients with CFS. Furthermore, the concentration of serum acylcarnitine in patients with CFS tended to increase to the normal level with the recovery of general fatigue. Therefore, the measurement of acylcarnitine would be a useful tool for the diagnosis and assessment of the degree of clinical manifestation in patients with CFS.

Acyl Coenzyme A↗
PubMed1994

[Occurrence of follicular small cleaved cell lymphoma following chemotherapy for diffuse large cell lymphoma].

A 59-year-old man was admitted in July, 1985 because of generalized lymphadenopathy and hypercalcemia. The biopsy specimen of the left inguinal lymph node showed diffuse large cell lymphoma. He achieved a complete remission (CR) in July, 1986 by CHOP therapy. In January, 1992, he visited the outpatient clinic with splenomegaly, and swelling of the left axillary and left supraclavicular lymph nodes. The biopsy specimen of the axillary lymph node showed follicular small cleaved cell lymphoma. Because the spleen and the lymph nodes regressed after the biopsy, he has been followed up without any specific treatment for lymphoma. Histologic change from low-grade lymphoma into more aggressive histologic pattern is well documented. However the converse phenomenon, occurrence of low-grade lymphoma after intermediate-, or high-grade lymphoma has rarely been reported. Histological examination is mandatory when a patient with diffuse large cell lymphoma is suspected to have relapsing disease after the long-term CR.

Antineoplastic Combined Chemotherapy Protocols↗
PubMed1993

Gene structure of CYP3A4, an adult-specific form of cytochrome P450 in human livers, and its transcriptional control.

CYP3 A4 is the adult-specific form of cytochrome P450 in human livers [Komori, M., Nishio, K., Kitada, M., Shiramatsu, K., Muroya, K., Soma, M., Nagashima, K. & Kamataki, T. (1990) Biochemistry 29, 4430-4433]. The sequences of three genomic clones for CYP3A4 were analyzed for all exons, exon-intron junctions and the 5'-flanking region from the major transcription site to nucleotide position -1105, and compared with those of the CYP3A7 gene, a fetal-specific form of cytochrome P450 in humans. The results showed that the identity of 5'-flanking sequences between CYP3A4 and CYP3A7 genes was 91%, and that each 5'-flanking region had characteristic sequences termed as NFSE (P450NF-specific element) and HFLaSE (P450HFLa specific element), respectively. A basic transcription element (BTE) also lay in the 5'-flanking region of the CYP3A4 gene as seen in many CYP genes [Yanagida, A., Sogawa, K., Yasumoto, K. & Fujii-Kuriyama, Y. (1990) Mol. Cell. Biol. 10, 1470-1475]. The BTE binding factor (BTEB) was present in both adult and fetal human livers. To examine the transcriptional activity of the CYP3A4 gene, DNA fragments in the 5'-flanking region of the gene were inserted in front of the simian virus 40 promoter and the chloramphenicol acetyltransferase structural gene, and the constructs were transfected in HepG2 cells. The analysis of the chloramphenicol acetyltransferase activity indicated that (a) specific element(s) which could bind with a factor(s) in livers was present in the 5'-flanking region of the CYP3A4 gene to show the transcriptional activity.

Adult↗
PubMed1993

High susceptibility to aflatoxin B1 and benzo[a]pyrene of BALB3T3 A31-1-1 cells expressing monkey CYP1A1.

The monkey CYP1A1 has been expressed in BALB 3T3 A31-1-1 cells and the expressed proteins were assayed for their capacity to activate aflatoxin B1 (AFB1) and benzo[a]pyrene (B[a]P). The transformed cells were approximately 5.4- and 4.7-fold more sensitive to AFB1 and B[a]P than the parental cells, respectively. These results indicate that monkey CYP1A1 cDNA encoded a functional protein and that the expressed CYP1A1 enzyme is active for the activation of B[a]P as well as AFB1 to produce toxic metabolites.

3T3 Cells↗
PubMed1993

Successful treatment of non-Hodgkin's lymphoma in a patient with common variable immunodeficiency.

A case of common variable immunodeficiency (CVID) who developed non-Hodgkin's lymphoma (NHL) of the rectum is reported. A 22-year-old male student in whom CVID was diagnosed at 7 years of age was referred to our department for the treatment of rectal NHL. The patient had stage IE disease confined to the rectum after clinical diagnostic procedures. He was initially treated with radiation therapy alone, but a relapse soon occurred in the paraaortic lymph nodes. He was successfully treated with CHOP-Bleo chemotherapy and supplementation with immunoglobulin preparations. He has since remained free of NHL and infectious complications for over 30 months despite his persistent immunodeficiency.

Adult↗
PubMed1993

A HTLV-I carrier who showed various symptoms and antibodies of autoimmune diseases.

We report a 37-year-old female HTLV-I carrier with complicating primary biliary cirrhosis (PBC) and mixed connective tissue disease (MCTD). Serum anti-HTLV-I antibody titer was x256. Flower cells (4.5%) were found in the peripheral blood. Southern blot analysis showed no clonal integration in peripheral blood lymphocyte (PBL) DNA. Polymerase chain reaction showed the HTLV-I genome in PBL DNA. As cholestatic liver dysfunction and serum titer of anti-mitochondrial antibody were found, a clinical diagnosis of PBC was made. This patient later developed MCTD. These diseases responded well to prednisone. The pathogenetic relationship of HTLV-I infection with various autoimmune diseases is discussed.

Adult↗
PubMed1993

[Non-Hodgkin's lymphoma of the bone, with reference to MRI findings following treatment].

A 38-year-old man was admitted to our department on April, 1991 for a progressive mass in his right thigh. He had pain in the same area since April, 1990, but did not notice lymph node swelling until March, 1991. The biopsy specimen of the mass showed diffuse large cell non-Hodgkin's lymphoma (NHL) with an immunohistochemical feature of B cell. He achieved a complete remission (CR) by a doxorubicin-containing combination regimen and received involved field irradiation with a total dose of 35 Gy thereafter. He has been in CR since September, 1991. Primary NHL of the bone is rare and there have been few reports on MRI findings during the treatment. These findings and management of primary NHL of the bone were discussed.

Adult↗