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Mimura S, Iwata N, Yamane T, Hirata Y, Tanino F, Sugihara S, Kinoshita T, Ogawa T. [Report on the ECR2003 (European Congress of Radiology): non-contrast intracranial MR venography with 3D-phase contrast imaging: optimization of presaturation pulse and velocity encoding]. Nihon Hoshasen Gijutsu Gakkai Zasshi 2003; 59:823-4. [PMID: 12937401 DOI: 10.6009/jjrt.kj00003174209] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
BACKGROUND Intracranial MR venography is useful for the diagnosis of dural sinus thrombosis and the preoperative assessment of sinus patency encased by tumors. Recently, contrast-enhanced MR venography has been applied for suspected dural sinus occlusion in a shorter time. However, it has some disadvantage for the evaluation of hypervascularized enhancing thrombus mimicking flow in chronic sinus thrombosis. So far, we have evaluated optimal imaging technique and slice orientation and have shown that sagittal three-dimensional (3D) -phase contrast (PC) imaging is the most suitable for the non-contrast intracranial MR venography. PURPOSE To assess the optimal presaturation pulse (SAT) and velocity encoding (VENC) for the non-contrast intracranial 3D-PC MR venography. METHODS AND MATERIALS Firstly, we performed phantom experiment to assess the best SAT thickness using arterial presaturation. Second, MR imaging was performed in 7 healthy volunteers to measure the dural sinus flow velocity using a 1.5 T MR. Third, 3D-PC MR venography was performed with a VENC settings at 10, 15, 20 and 30 cm/sec for healthy volunteers. All data were displayed as maximum intensity projection images and three neuroradiologists assessed the visibility of the dural sinuses and the cortical vein. RESULTS The mean flow velocity of the dural sinuses was 6.3 cm/sec. The thickness of the best SAT was 100 mm. In the assessment of the visibility of the 3D-PC images, dural sinuses were adequately visualized at a VENC of 15 cm/sec. CONCLUSIONS Non-contrast intracranial 3D-PC MR venography was optimized at 100mm thickness of SAT and a VENC of 15 cm/sec.
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102
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Aoyama Y, Yamamura R, Shima E, Nakamae H, Makita K, Kho G, Ohta K, Yamane T, Takubo T, Hino M. Successful treatment with reduced-intensity stem cell transplantation in a case of relapsed refractory central nervous system lymphoma. Ann Hematol 2003; 82:371-3. [PMID: 12719887 DOI: 10.1007/s00277-003-0651-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2002] [Accepted: 03/28/2003] [Indexed: 10/26/2022]
Abstract
A 33-year-old male with refractory relapsed central nervous system lymphoma underwent allogeneic hematopoietic stem cell transplantation (allo-HSCT) from an HLA-identical sibling after reduced-intensity conditioning chemotherapy. The preparative regimen for allo-HSCT consisted of fludarabine and busulfan. Cyclosporine (CsA) and short-term methotrexate were used as prophylaxis for acute graft-versus-host disease (GVHD). Although CsA was quickly reduced to induce a graft-versus-lymphoma (GVL) effect, no symptoms of GVHD and GVL effect were evident. Donor lymphocyte infusion (DLI) was performed on day +40 following transplantation. The patient developed acute GVHD (grade III) after DLI, and lymphoma regression was observed after the occurrence of GVHD. Four months after transplantation, complete remission was achieved with extensive chronic GVHD, and the patient continues to be disease free at 15 months after transplantation.
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103
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Wang Y, Yamada S, Asakawa N, Yamane T, Yoshie N, Inoue Y. Comonomer compositional distribution and thermal and morphological characteristics of bacterial poly(3-hydroxybutyrate-co-3-hydroxyvalerate)s with high 3-hydroxyvalerate content. Biomacromolecules 2003; 2:1315-23. [PMID: 11777409 DOI: 10.1021/bm010128o] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The comonomer compositional distribution and thermal and morphological characteristics were investigated for five bacterially synthesized poly(3-hydroxybutyrate-co-3-hydroxyvalerate) [P(3HB-co-3HV)] samples with 3HV content of 45, 49, 70, 80, and 96 mol %. All these samples were fractionated into many fractions with widely different 3HV content by changing solvent/nonsolvent volume ratio of chloroform/n-heptane mixtures. Bacterial P(3HB-co-3HV) samples investigated in this study were found to have broad comonomer compositional distribution. The tendencies of the fractional precipitation of the P((3HB-co-3HV)s with 3HV content lower than 60 mol % and those with 3HV higher than 80 mol % were found to be contrary. The 3HV content dependences of the thermal properties and crystalline structures were investigated for bacterial poly(3-hydroxybutyrate) [P(3HB)] and a series of compositionally well-fractionated P(3HB-co-3HV) samples with 3HV content ranged from 14 to 98 mol % by DSC, WAXD, and solid-state (13)C NMR. It was found that P(3HB-co-3HV) samples with 3HV content lower than about 47 mol % form the crystalline lattice having the P(3HB) homopolymer type lattice including the 3HV unit as the crystal constituent, and those with a 3HV content higher than about 52 mol % form the crystalline lattice having the P(3HV) homopolymer type lattice including the 3HB units. Thus, P(3HB-co-3HV)s show the crystalline structural change in a very narrow range of 3HV content.
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104
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Akahori M, Nakamae H, Hino M, Yamane T, Hayashi T, Ohta K, Tatsumi N, Kitagawa S, Tsumura K. Electrocardiogram is very useful for predicting acute heart failure following myeloablative chemotherapy with hematopoietic stem cell transplantation rescue. Bone Marrow Transplant 2003; 31:585-90. [PMID: 12692626 DOI: 10.1038/sj.bmt.1703890] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
A prospective study was conducted in 71 evaluable patients who received myeloablative hematopoietic stem cell transplantation (HSCT) at our facility from 1995 to 2002, to find a sensitive marker for post-transplant heart failure, including echocardiographic systolic and diastolic markers and QTc interval. QTc was found to be an independent and significant risk factor for acute heart failure (AHF) on multivariate logistic regression analysis (OR 1.5, P=0.01, 95% confidence interval (CI) 1.1-2.0), while no significant differences between patients with AHF and those without AHF were found in age, sex, treatment history, type of conditioning regimen, and echocardiographic systolic and diastolic markers. On further analysis, post-transplant risk of AHF appeared to be increased as QTc was prolonged. The post-transplant risk of AHF in the group with longest QTc on multivariate logistic regression analysis was found to be 9.8 times that in the group with shortest QTc (P=0.04, 95% CI 1.0-100). These results suggest that echocardiographic markers are less valuable predictors of post-transplant AHF, but that prolongation of the QTc, an ECG marker, before HSCT is strongly associated with onset of AHF after HSCT.
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105
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Hino M, Yamane T, Park K, Takubo T, Ohta K, Kitagawa S, Higuchi K, Arakawa T. Platelet recovery after eradication of Helicobacter pylori in patients with idiopathic thrombocytopenic purpura. Ann Hematol 2003; 82:30-2. [PMID: 12574961 DOI: 10.1007/s00277-002-0579-8] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2002] [Accepted: 10/23/2002] [Indexed: 12/24/2022]
Abstract
The association between Helicobacter pylori ( H. pylori) infection and idiopathic thrombocytopenic purpura (ITP) has been reported by several groups. We investigated the prevalence of H. pylori infection and the effectiveness of its eradication in Japanese patients with ITP. H. pylori infection was found in 21 of 30 patients (70.0%) by (13)C urea breath test and presence of serum antibodies to H. pylori. H. pylori was eradicated in 18 of the 21 infected patients (85.7%) by administration of a proton pump inhibitor and two kinds of antibiotics. In only one patient was medication discontinued due to skin rash on the 4th day of treatment. Platelet recovery was obtained in ten patients (55.6%). In two patients with treatment failure, platelet recovery was obtained after successful re-eradication. In three patients without H. pylori infection, platelet counts did not significantly increase with the same treatment. On the other hand, eradication therapy did not affect platelet counts in patients with gastric ulcer. In conclusion, H. pylori eradication can be used for initial treatment with tolerable adverse effects in some ITP patients.
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106
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Yamane T, Yoshida Y, Mitsumata M. 2WS12-2 Regulation of extracellular matrix production and degradation of endothelial cells by shear stress. ATHEROSCLEROSIS SUPP 2003. [DOI: 10.1016/s1567-5688(03)90432-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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107
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Takubo T, Kanashima H, Terada Y, Aoyama Y, Nakamae H, Yamamura R, Shima E, Makita K, Tanaka K, Ohta K, Yamane T, Hino M, Kamitani T, Tatsumi N. Clinical significance of serum E-cadherin levels in patients with haematological malignancies. HAEMATOLOGIA 2002; 31:319-25. [PMID: 12038515 DOI: 10.1163/15685590160141341] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
E-cadherin is a transmembrane glycoprotein that mediates Ca2+-dependent intracellular adhesion in normal epithelial cells. E-cadherin levels in serum are known to be significantly elevated in patients with epithelial carcinomas. However, the role of E-cadherin in haematopoietic cells is less clear. In this study, serum E-cadherin levels were therefore determined in patients with acute or chronic leukaemia, malignant lymphoma or myelodysplastic syndromes. Significant elevation of serum E-cadherin levels was detected in patients with haematological malignancies, and between types of acute leukaemias or subtypes of myelodysplastic syndromes, stages of malignant lymphoma, and phases of chronic leukaemia, respectively, compared with those in healthy adult volunteers. These findings suggest that E-cadherin might be expressed in malignant haematopoietic cells and might be useful as a diagnostic indicator in haematological malignancies.
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108
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Takubo T, Fujino H, Hino M, Yamane T, Ohta K, Koh KR, Kumura T, Hashimoto S, Nakao T, Nakamae H, Aoyama Y, Nishiki S, Kinoshita Y, Kamitani T, Tatsumi N, Hojo S, Fujita J. Expression of KL-6 antigen on leukemia cells of a patient with chronic myelocytic leukemia in blastic phase. HAEMATOLOGIA 2002; 31:173-6. [PMID: 11583030 DOI: 10.1163/15685590152492990] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
MESH Headings
- Antigens/blood
- Antigens/genetics
- Antigens, Neoplasm
- Biomarkers, Tumor/blood
- Blast Crisis/diagnosis
- Blast Crisis/immunology
- Blast Crisis/pathology
- Bone Marrow Cells/immunology
- Bone Marrow Cells/metabolism
- Bone Marrow Cells/pathology
- Glycoproteins/blood
- Glycoproteins/genetics
- Humans
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/diagnosis
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/immunology
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/pathology
- Monocytes/immunology
- Monocytes/metabolism
- Monocytes/pathology
- Mucin-1
- Mucins
- RNA, Messenger/blood
- RNA, Neoplasm/blood
- Reverse Transcriptase Polymerase Chain Reaction
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109
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Takubo T, Kumura T, Ohta K, Yamane T, Hino M, Kamitani T, Tatsumi N. Elevation of serum procalcitonin level in a patient with chronic myelocytic leukemia. HAEMATOLOGIA 2002; 31:177-9. [PMID: 11583031 DOI: 10.1163/15685590152493007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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110
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Yokomizo H, Hifumi M, Yamane T, Hirata T, Terakura H, Murata K, Fujita H, Matsukane H. Epidermoid cyst of an accessory spleen at the pancreatic tail: diagnostic value of MRI. ABDOMINAL IMAGING 2002; 27:557-9. [PMID: 12172997 DOI: 10.1007/s00261-001-0055-2] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
We report a rare case of an epidermoid cyst in an accessory spleen at the pancreatic tail. Only 12 cases have been reported. Among the different diagnostic modalities, magnetic resonance imaging was most useful for the differential diagnosis. Precise imaging of the cyst wall and its comparison with the surrounding organs are essential.
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111
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Yamane T, Kunisada T, Hayashi S. Embryonic stem cells as a model for studying osteoclast lineage development. Methods Mol Biol 2002; 185:97-106. [PMID: 11769016 DOI: 10.1385/1-59259-241-4:97] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
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112
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Yamane T, Hayashi S, Kunisada T. Embryonic stem cells as a model for studying melanocyte development. Methods Mol Biol 2002; 185:261-8. [PMID: 11768994 DOI: 10.1385/1-59259-241-4:261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
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113
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Yamane T, Davidson N. On the Complexing of Desoxyribonucleic Acid (DNA) by Mercuric Ion1. J Am Chem Soc 2002. [DOI: 10.1021/ja01473a001] [Citation(s) in RCA: 245] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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114
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115
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Yamane T, Davidson N. Complexes of Mercury(I) with Polyphosphate and Dicarboxylate Anions and Mercury (II) Pyrophosphate Complexes1. J Am Chem Soc 2002. [DOI: 10.1021/ja01494a009] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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116
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Nihei KI, Kato MJ, Yamane T, Palma MS, Konno K. An efficient and versatile synthesis of acylpolyamine spider toxins. Bioorg Med Chem Lett 2002; 12:299-302. [PMID: 11814782 DOI: 10.1016/s0960-894x(01)00733-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
An efficient and versatile synthesis of acylpolyamine spider toxins was developed based on the structural classification of the Nephila and Nephilengys spider toxins using the 2-nitrobenzenesulfonamide protecting group. The naturally occurring toxins 1-5 representing each structural type have been efficiently synthesized by this method in a high overall yield with few steps.
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117
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Nishiki S, Hino M, Kumura T, Hashimoto S, Ohta K, Yamane T, Takubo T, Tatsumi N, Kitagawa S, Kamitani T, Watanabe Y, Shimada E, Juji T, Iida S. Effectiveness of washed platelet concentrate and red cell transfusions for a patient with anhaptoglobinemia with antihaptoglobin antibody. Transfus Med 2002; 12:71-3. [PMID: 11967140 DOI: 10.1046/j.1365-3148.2002.00350.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
A 71-year-old Japanese male with myelodysplastic syndrome progressing to overt leukaemia and hepatocellular carcinoma developed dyspnea and urticaria immediately after infusion of platelet concentrate (PC). He exhibited an identical reaction following blood transfusion. Serum haptoglobin was undetectable. The patient was determined to be homozygous for Hp(del) by polymerase chain reaction (PCR). Antibody to haptoglobin was detected by enzyme-linked immunosorbent assay (ELISA) and Western blot analysis. No antibodies against human leucocyte antigen (HLA) or platelet-specific antigens were detected. Washed PC and washed red blood cells were effective in preventing the transfusion-related anaphylactoid reactions.
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118
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Takubo T, Shibata H, Terada Y, Aoyama Y, Nakamae H, Yamamura R, Shima E, Makita K, Tanaka K, Ohta K, Yamane T, Hino M, Hashimoto S, Kamitani T, Tatsumi N. Serum sialyl Lewis(x) levels in patients with various haematologic malignancies. HAEMATOLOGIA 2002; 32:147-9. [PMID: 12412734 DOI: 10.1163/156855902320387989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/19/2023]
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119
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Shima E, Hino M, Yamane T, Aoyama Y, Nakamae H, Yamamura R, Makita K, Sugano Y, Yasuda S, Takubo T, Ohta K, Tatsumi N. Acute rhabdomyolysis following administration of high-dose cyclophosphamide: case report. Ann Hematol 2002; 81:55-6. [PMID: 11807638 DOI: 10.1007/s00277-001-0399-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2001] [Accepted: 10/11/2001] [Indexed: 11/28/2022]
Abstract
Rhabdomyolysis is an unusual complication of hematopoietic stem cell transplantation (HSCT). Cyclophosphamide has been one of the key drugs in the most common preparative regimen for HSCT. We present here a rare case of acute rhabdomyolysis following administration of high-dose cyclophosphamide. A 47-year-old woman with adult T-cell leukemia in remission was treated with high-dose cyclophosphamide as a preparative regimen for allogeneic bone marrow transplantation. Nineteen hours later, general convulsions and acidosis suddenly occurred. Levels of serum creatine kinase (skeletal muscle type), myoglobin, and aldolase were markedly elevated to 32870 IU/l, 640 ng/ml, and 240.3 IU/l, respectively. Rhabdomyolysis caused by high-dose cyclophosphamide was diagnosed, and the preparative chemotherapy was discontinued. Subsequently, her muscular signs and symptoms improved, and the results of laboratory examinations returned to normal after 2 weeks. She had previously been treated with conventional doses of cyclophosphamide, doxorubicin, vincristine, and prednisolone without evidence of rhabdomyolysis. Acute rhabdomyolysis may be an adverse effect specific to high-dose cyclophosphamide therapy.
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120
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Fujino H, Ohta K, Taniue A, Nagao N, Hino M, Yamane T, Koh KR, Takeoka Y, Hirose A, Aoyama Y, Nakamae H, Terada Y, Takubo T, Tatsumi N. Primary refractoriness to platelet transfusion caused by Nak a
antibody alone. Vox Sang 2002. [DOI: 10.1046/j.0042-9007.2001.00140.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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121
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Takubo T, Kanashima H, Terada Y, Shibata H, Aoyama Y, Nakamae H, Yamamura R, Shima E, Makita K, Tanaka K, Ohta K, Yamane T, Hino M, Kamitani T, Tatsumi N. Clinical significance of serum E-selectin levels in patients with various haematologic malignancies. HAEMATOLOGIA 2002; 32:97-100. [PMID: 12243563 DOI: 10.1163/156855902760262844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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122
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Agishi T, Kaneko I, Hasuo Y, Hayasaka Y, Sanaka T, Ota K, Amemiya H, Sugino N, Abe M, Ono T, Kawai S, Yamane T. Double Filtration Plasmapheresis. ACTA ACUST UNITED AC 2001. [DOI: 10.1046/j.1526-0968.2000.00237.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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123
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Tanaka K, Migitani A, Teshima H, Tatsumi Y, Inoue T, Ohta K, Yamane T, Hino M, Takubo T, Tatsumi N. [Two cases of bronchus-associated lymphoid tissue lymphoma]. [RINSHO KETSUEKI] THE JAPANESE JOURNAL OF CLINICAL HEMATOLOGY 2001; 42:1170-5. [PMID: 11828719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
We report 2 cases of bronchus-associated lymphoid tissue lymphoma (BALT lymphoma), which is a rare disease. Patient 1 was a 76-year-old woman with a chief complaint of cough. Since plain chest radiography revealed an abnormal shadow in the hilum of the lung, she visited our hospital. Patient 2 was a 56-year-old man, who had been diagnosed as having pseudolymphoma at a medical check-up in a local hospital. During follow-up, however, he was referred to our hospital because of enlarged tumors and chest pain. In both patients, bronchofiberscopy demonstrated submucosal tumors and biopsy samples showed formation of lymphoepithelial lesions by centrocyte-like cells with a B-cell staining pattern. The patients were therefore diagnosed as having BALT lymphoma. Both received CEOP-E treatment, which improved the clinical symptoms but did not result in complete remission. The patients have been followed up after discontinuation of the medication. The progress of the disease has been slow, and both patients are alive as of September 2001.
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124
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Akita M, Suzuki A, Kobayashi T, Ito S, Yamane T. The first structure of pectate lyase belonging to polysaccharide lyase family 3. ACTA CRYSTALLOGRAPHICA SECTION D: BIOLOGICAL CRYSTALLOGRAPHY 2001; 57:1786-92. [PMID: 11717490 DOI: 10.1107/s0907444901014482] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2001] [Accepted: 09/03/2001] [Indexed: 11/10/2022]
Abstract
The crystal structure of a highly alkaline low molecular weight pectate lyase (Pel-15) was determined at 1.5 A resolution by the multiple isomorphous replacement (MIR) method. This is the first pectate lyase structure from polysaccharide lyase family 3. The overall structure is a simple eight-turn right-handed parallel beta-helix domain with one long loop protruding from one side of the beta-helix. The low molecular weight of Pel-15 derives from the lack of N- and C-terminal extensions that are found in many beta-helix proteins. Although the structure has one calcium ion at pH 6.7, raising the pH to 9.5 results in the binding of an additional calcium ion. The common calcium ion found in both the pH 6.5 and 9.5 structures seems to stabilize both the beta-helix structure and the long protruding loop. The additional calcium ion found in the pH 9.5 structure alone may neutralize the acidic substrate. The region around the additional calcium ion is thought to bind to the substrate, as this region is rich in charged amino-acid residues which are required in catalysis.
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125
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Aoyama Y, Yamane T, Hino M, Ohta K, Nakamae H, Yamamura R, Koh KR, Takubo T, Inoue T, Tatsumi Y, Tatsumi N. Blastic NK-cell lymphoma/leukemia with T-cell receptor gamma rearrangement. Ann Hematol 2001; 80:752-4. [PMID: 11797118 DOI: 10.1007/s00277-001-0380-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2001] [Accepted: 08/22/2001] [Indexed: 10/27/2022]
Abstract
A 79-year-old Japanese man was admitted to our hospital with dyspnea in June 1999. Physical examination revealed general exanthema, hepatosplenomegaly, and lymphadenopathy. Increased numbers of abnormal cells were observed in peripheral blood; these cells were of lymphoblastic morphology with high nuclear/cytoplasm ratios and few azurophilic granules. Immunophenotypic analysis revealed positivity for CD2, CD4, CD56, and HLA-DR, and negativity for CD3, CD13, CD16, CD33, CD34, and T cell receptor (TCR). On genotypic analysis, TCRgamma chain was rearranged, but neither the TCRbeta chain nor TCRdelta chain. Despite an initial good response to chemotherapy the disease relapsed in the early stage, and the patient died 6 months after diagnosis.
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MESH Headings
- Aged
- Antigens, CD/analysis
- Biopsy
- Bone Marrow/pathology
- C-Reactive Protein/analysis
- Cell Nucleus/pathology
- Cytoplasm/pathology
- Erythema/pathology
- Fatal Outcome
- Gene Rearrangement, gamma-Chain T-Cell Antigen Receptor
- HLA-DR Antigens/analysis
- Humans
- Immunophenotyping
- Killer Cells, Natural/immunology
- L-Lactate Dehydrogenase/blood
- Leukemia, Lymphocytic, Chronic, B-Cell/diagnosis
- Leukemia, Lymphocytic, Chronic, B-Cell/genetics
- Leukemia, Lymphocytic, Chronic, B-Cell/pathology
- Leukemia, Lymphoid/diagnosis
- Leukemia, Lymphoid/genetics
- Leukemia, Lymphoid/pathology
- Male
- Receptors, Interleukin-2/analysis
- Skin/pathology
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