76
|
Nomura M, Yamashita K, Murakami M, Takehara M, Konishi M, Echizenya H, Yanagida N, Sunahara M, Kitagawa N, Furukawa H, Uede T, Todo S. Novel CD40-IgG adenovirus-mediated gene therapy as a potent immunosuppressive treatment for liver transplantation in rats. Transplant Proc 2001; 33:189. [PMID: 11266774 DOI: 10.1016/s0041-1345(00)01970-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
|
77
|
Ishikawa H, Jin MB, Suzuki T, Shimamura T, Taniguchi M, Magata S, Furukawa H, Todo S. Elevation of cyclic nucleotides attenuates ischemia and reperfusion injury of liver. Transplant Proc 2001; 33:982-3. [PMID: 11267156 DOI: 10.1016/s0041-1345(00)02296-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
78
|
Yanagida N, Nomura M, Yamashita K, Takehara M, Murakami M, Echizenya H, Konishi K, Kitagawa N, Furukawa H, Uede T, Todo S. Tolerance induction by a single donor pretreatment with the adenovirus vector encoding CTLA4Ig gene in rat orthotopic liver transplantation. Transplant Proc 2001; 33:573-4. [PMID: 11266963 DOI: 10.1016/s0041-1345(00)02147-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
|
79
|
Kishino S, Koshinami Y, Hosoi T, Suda N, Takekuma Y, Gandoh S, Furukawa H, Todo S, Miyazaki K. Effective fluconazole therapy for liver transplant recipients during continuous hemodiafiltration. Ther Drug Monit 2001; 23:4-8. [PMID: 11206042 DOI: 10.1097/00007691-200102000-00002] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Fungal infections are still one of the main causes of death and complications after solid organ and bone marrow transplants. The authors evaluated the effect of continuous hemodiafiltration (CHDF) on the pharmacokinetics of fluconazole in liver transplant recipients. Six liver transplant patients (primary biliary cirrhosis, n = 2; fulminant hepatitis, n = 2; viral hepatitis, n = 2) were enrolled in this study. In one patient not receiving CHDF, the fluconazole levels increased with increasing dosages. In contrast, in patients undergoing CHDF, the dosage of fluconazole was increased from 100 mg/d to 200 mg/d, but fluconazole did not reach the targeted levels. It appears that the targeted trough level cannot be achieved by administration of fluconazole at a dosage of 100 to 200 mg/d during CHDF. A higher dosage (600-1000 mg/d) of fluconazole may be required to achieve the therapeutic drug level in patients undergoing CHDF. In patients undergoing CHDF, fluconazole was given at a dosage of 800 mg/d and reached the targeted levels. In addition, after CHDF, the dosage of fluconazole was decreased to 100 mg/d, and fluconazole reached the near-targeted trough level. These results demonstrate that CHDF removes fluconazole from the blood at an efficiently high rate, resulting in its ineffective blood level. To guarantee safe and effective fluconazole therapy, the trough levels should be monitored routinely during CHDF.
Collapse
|
80
|
Horiuchi H, Suzuki T, Taniguchi M, Magata S, Jin MB, Ishikawa H, Ogata K, Shimamura T, Furukawa H, Todo S. Attenuation of hepatic ischemia and reperfusion injury by serine protease inhibitor, FUT-175, in dogs. Transplant Proc 2001; 33:848. [PMID: 11267095 DOI: 10.1016/s0041-1345(00)02344-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
81
|
Ogata K, Jin MB, Suzuki T, Taniguchi M, Shimamura T, Fukai M, Furukawa H, Todo S. Inhibition of type II phospholipase A(2) by LY329722 attenuates ischemia and reperfusion injury of canine livers. Transplant Proc 2001; 33:860-1. [PMID: 11267103 DOI: 10.1016/s0041-1345(00)02350-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
82
|
Takeyoshi I, Zhang S, Nomoto M, Zhu Y, Kokudo Y, Suzuki T, Hamada N, Nemoto A, Starzl TE, Todo S. Mucosal damage and recovery of the intestine after prolonged preservation and transplantation in dogs. Transplantation 2001; 71:1-7. [PMID: 11211173 PMCID: PMC2967181 DOI: 10.1097/00007890-200101150-00001] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
BACKGROUND Although much is known about the mucosal damage that occurs after intestinal warm ischemia and reperfusion and its recovery, little is known about the effect of cold preservation and transplantation on the mucosa. We studied the electrophysiological, biochemical, and histological changes of the intestinal mucosa after preservation for 24 hr and subsequent transplantation. METHODS The small intestines from adult mongrel dogs were harvested. The intestines were orthotopically autotransplanted immediately (control group) or after preservation for 24 hr (preservation group). Jejunal and ileal tissues were taken before harvesting, at the end of preservation, 1 hr after reperfusion, and on postoperative days 3, 7, 14, and 28. The Ussing chamber method was used to study the electrophysiologic changes. Tissue maltase, diamine oxidase, and ornithine decarboxylase were measured. A histological analysis was also performed. RESULTS Control group grafts showed no evident deterioration in electrophysiology, biochemistry, or morphology. In contrast, preservation group grafts exhibited electrophysiological and biochemical degradation, complete denudation of the villi, and crypt injury (especially in the ileum) after reperfusion. Electrophysiologic function and the mucosa biochemical marker recovered within 3 days in the jejunum and within 7-14 days in the ileum; however, histological recovery of mucosal injury required 28 days in the jejunum and more than 28 days in the ileum. CONCLUSIONS Our study showed that despite severe destruction of mucosal integrity by prolonged preservation and transplantation, the intestinal mucosa has an enormous regenerative capacity. Our study also showed that regeneration was more pronounced in the jejunum than in the ileum.
Collapse
|
83
|
Shimamura T, Ishikawa H, Fukai M, Furukawa H, Todo S. [Liver transplantation from brain dead patients]. NIHON NAIKA GAKKAI ZASSHI. THE JOURNAL OF THE JAPANESE SOCIETY OF INTERNAL MEDICINE 2001; 90:21-8. [PMID: 11215467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
|
84
|
Nishikawa T, Nishida J, Nishikawa K, Ookura R, Ookubo H, Kamachi H, Matsushita M, Todo S, Shimomura M. Novel Cell Culture Substrates based on Micro-Porous Films of Amphiphilic Polymers. ACTA ACUST UNITED AC 2001. [DOI: 10.1016/s0167-2991(01)82141-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/07/2023]
|
85
|
Takada N, Isogai E, Kawamoto T, Nakanishi H, Todo S, Nakagawara A. Retinoic acid-induced apoptosis of the CHP134 neuroblastoma cell line is associated with nuclear accumulation of p53 and is rescued by the GDNF/Ret signal. MEDICAL AND PEDIATRIC ONCOLOGY 2001; 36:122-6. [PMID: 11464863 DOI: 10.1002/1096-911x(20010101)36:1<122::aid-mpo1029>3.0.co;2-r] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
BACKGROUND Neuroblastoma (NBL) is one of the most common solid malignancies in childhood and is derived from the sympathetic precursor cells. Although p53, a tumor suppressor, has been reported to be rarely mutated in NBLs, it is sequestered abnormally in the cytoplasm of the NBL cell. The mechanism and functional role of the abnormal intracellular localization of p53 remain unclear. PROCEDURE Here, we established an in vitro system of apoptosis model using a NBL cell line CHP134 which also showed a cytoplasmic sequestration of p53. The treatment of the cells with 1 or 5 microM all-trans retinoic acid (RA) induced moderate neurite outgrowth followed by massive death of CHP134 cells by days 5 to 6. RESULTS TUNEL staining showed that the cell death was due to apoptosis. Immunofluorescent stain demonstrated that p53 was strongly positive in the nucleus on day 5, which was accompanied with induction of p21WAF1. In addition, expression of caspase-3 was also increased during the cell death. Intriguingly, the RA treatment induced expression of Ret tyrosine kinase receptor in CHP134 cells. CONCLUSIONS The addition of ligands, glial cell line-derived neurotrophic factor (GDNF) and neurturin (NTN), inhibited apoptosis as well as nuclear accumulation of p53 in the cell. The present results suggest that the RA-induced apoptosis of NBL cells is associated with activation of both the caspase cascade and the p53-mediated pathway with its nuclear translocation. The neurotrophic signal through the GDNF-Ret system may prevent the neuronal cell death.
Collapse
|
86
|
Kitagawa N, Goto M, Kurozumi K, Maruo S, Fukayama M, Naoe T, Yasukawa M, Hino K, Suzuki T, Todo S, Takada K. Epstein-Barr virus-encoded poly(A)(-) RNA supports Burkitt's lymphoma growth through interleukin-10 induction. EMBO J 2000; 19:6742-50. [PMID: 11118209 PMCID: PMC305895 DOI: 10.1093/emboj/19.24.6742] [Citation(s) in RCA: 148] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Akata and Mutu cell lines are derived from Burkitt's lymphoma (BL) and retain the in vivo phenotype of Epstein-Barr virus (EBV) expression that is characterized by expression of EBV-determined nuclear antigen 1 (EBNA1), EBV-encoded RNAs (EBERs) and transcripts from the BAM:HI A region (BARF0). We found that EBV-positive Akata and Mutu cell clones expressed higher levels of interleukin (IL)-10 than their EBV-negative subclones at the transcriptional level. Transfection of an individual EBV latent gene into EBV-negative Akata cells revealed that EBERs were responsible for IL-10 induction. Recombinant IL-10 enabled EBV-negative Akata cells to grow in low (0.1%) serum conditions. On the other hand, growth of EBV-positive Akata cells was blocked by treatment either with an anti-IL-10 antibody or antisense oligonucleotide against IL-10. EBV-positive BL biopsies consistently expressed IL-10, but EBV-negative BL biopsies did not. These results suggest that IL-10 induced by EBERs acts as an autocrine growth factor for BL. EBERs, EBER1 and EBER2, are non-polyadenylated RNAs and are 166 and 172 nucleotides long, respectively. The present findings indicate that RNA molecules could regulate cell growth.
Collapse
|
87
|
Takahashi H, Maeda Y, Watanabe K, Taguchi K, Sasaki F, Todo S. Correlation between elevated intratumoral thymidine phosphorylase and prognosis of node-positive breast carcinoma undergoing adjuvant doxifluridine treatment. Int J Oncol 2000; 17:1205-11. [PMID: 11078806 DOI: 10.3892/ijo.17.6.1205] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
We determined intratumoral thymidine phosphorylase (dThdPase) activity in 213 patients with T2N0M0 or T2N1M0 breast cancer. After surgery doxifluridine, an intermediate metabolite of capecitabine, and tamoxifen were given by mouth. According to dThdPase activity the examined patients were classified as: A, high activity group; tumors with the activity not less than the mean value and B, low activity group; tumors with activity less than the mean value. Group A had a better prognosis than group B in node-positive patients (disease-free survival, p=0.0446; overall survival, p=0.0788). Intratumoral dThdPase activity might be a useful marker for predicting responsiveness to doxifluridine treatment in the adjuvant setting.
Collapse
MESH Headings
- Adult
- Aged
- Antimetabolites, Antineoplastic/pharmacology
- Antimetabolites, Antineoplastic/therapeutic use
- Breast Neoplasms/drug therapy
- Breast Neoplasms/enzymology
- Breast Neoplasms/mortality
- Breast Neoplasms/surgery
- Carcinoma, Ductal, Breast/drug therapy
- Carcinoma, Ductal, Breast/enzymology
- Carcinoma, Ductal, Breast/mortality
- Carcinoma, Ductal, Breast/surgery
- Chemotherapy, Adjuvant
- Combined Modality Therapy
- Disease-Free Survival
- Enzyme Inhibitors/pharmacology
- Enzyme Inhibitors/therapeutic use
- Estrogens
- Female
- Floxuridine/pharmacology
- Floxuridine/therapeutic use
- Genes, erbB-2
- Humans
- Life Tables
- Lymphatic Metastasis
- Middle Aged
- Neoplasm Proteins/analysis
- Neoplasm Proteins/antagonists & inhibitors
- Neoplasms, Hormone-Dependent/drug therapy
- Neoplasms, Hormone-Dependent/enzymology
- Neoplasms, Hormone-Dependent/mortality
- Neoplasms, Hormone-Dependent/surgery
- Progesterone
- Prognosis
- Receptors, Estrogen/analysis
- Receptors, Progesterone/analysis
- Survival Analysis
- Thymidine Phosphorylase/analysis
- Thymidine Phosphorylase/antagonists & inhibitors
Collapse
|
88
|
Fukamichi K, Goto T, Masumoto T, Sakakibara T, Oguchi M, Todo S. Magnetic moment and spin glass behaviour of Al-Mn quasicrystals. ACTA ACUST UNITED AC 2000. [DOI: 10.1088/0305-4608/17/3/018] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
89
|
Fukamichi K, Masumoto T, Oguchi M, Inoue A, Goto T, Sakakibara T, Todo S. Magnetic and electrical properties of icosahedral quasicrystalline Al-Mn alloys. ACTA ACUST UNITED AC 2000. [DOI: 10.1088/0305-4608/16/8/019] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
90
|
Abstract
1. Twenty centers in Japan performed 308 living donor liver transplants (LDLT) in adults. 2. Right lobe grafts were used in the minority of cases (27.1%); most had left lobe grafts (72.9%). Survival was not influenced by the type of graft. 3. There were no donor deaths (0%); 9.3% of donors experienced mild to moderate complications. Biliary complications were the most frequent. 4. Overall recipient survival was 72.4%.
Collapse
|
91
|
Nakagawa S, Kadoya Y, Todo S, Kobayashi A, Sakamoto H, Freeman MA, Yamano Y. Tibiofemoral movement 3: full flexion in the living knee studied by MRI. THE JOURNAL OF BONE AND JOINT SURGERY. BRITISH VOLUME 2000; 82:1199-200. [PMID: 11132287 DOI: 10.1302/0301-620x.82b8.10718] [Citation(s) in RCA: 157] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
We studied active flexion from 90 degrees to 133 degrees and passive flexion to 162 degrees using MRI in 20 unloaded knees in Japanese subjects. Flexion over this arc is accompanied by backward movement of the medial femoral condyle of 4.0 mm and by backward movement laterally of 15 mm, i.e., by internal rotation of the tibia. At 162 degrees the lateral femoral condyle lies posterior to the tibia.
Collapse
|
92
|
Omura T, Kishida A, Furukawa H, Matsushita M, Todo S. Living liver donation for adult living-related liver transplantation. Transplant Proc 2000; 32:1579-80. [PMID: 11119843 DOI: 10.1016/s0041-1345(00)01323-3] [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: 10/18/2022]
|
93
|
Nakagawa S, Kadoya Y, Todo S, Kobayashi A, Sakamoto H, Freeman MAR, Yamano Y. Tibiofemoral movement 3: full flexion in the living knee studied by MRI. ACTA ACUST UNITED AC 2000. [DOI: 10.1302/0301-620x.82b8.0821199] [Citation(s) in RCA: 69] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
We studied active flexion from 90° to 133° and passive flexion to 162° using MRI in 20 unloaded knees in Japanese subjects. Flexion over this arc is accompanied by backward movement of the medial femoral condyle of 4.0 mm and by backward movement laterally of 15 mm, i.e., by internal rotation of the tibia. At 162° the lateral femoral condyle lies posterior to the tibia.
Collapse
|
94
|
Tabata Y, Hibi S, Maruyama-Tabata H, Tsunamoto K, Todo S, Sawada T, Okamura T, Kawa-Ha K, Imashuku S. Serial analysis of MLL-AF4 chimeric message through successful bone marrow transplantation in a patient with t(4;11)-positive infant-ALL. Am J Hematol 2000; 64:203-5. [PMID: 10861817 DOI: 10.1002/1096-8652(200007)64:3<203::aid-ajh11>3.0.co;2-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
A 28-month-old girl with acute lymphoblastic leukemia (ALL) showing a t(4;11)(q21;q23) karyotype successfully underwent allogeneic bone marrow transplantation (BMT) at relapse. The chimeric MLL-AF4 message on her bone marrow (BM) specimens, examined by reverse transcriptase-polymerase chain reaction, was detectable at diagnosis, relapse, and just before BMT but became undetectable following BMT. She has since maintained complete remission. This observation suggests that detection of the chimeric message in BM may be useful to predict clinical outcome in patients with t(4;11) ALL.
Collapse
|
95
|
Tabata YHibi S, Teramura T, Kuriyama K, Yagi T, Todo S, Sawada T, Imashuku S. Molecular analysis of latent membrane protein 1 in patients with Epstein-Barr virus-associated hemophagocytic lymphohistiocytosis in Japan. Leuk Lymphoma 2000; 38:373-80. [PMID: 10830744 DOI: 10.3109/10428190009087028] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Latent membrane protein 1 (LMP1) of Epstein-Barr virus (EBV) is considered to be an oncoprotein because it is crucial for B-lymphocyte transformation. Since a 30 base pair (bp) deletion in the carboxy-terminal portion of the LMP1 gene was found in a CAO cell line derived from nasopharyngeal carcinoma containing EBV, an association between EB viral genetic alteration and tumorigenicity has been postulated. In this study we have analyzed LMP1 DNA isolated from 10 Japanese patients with EBV-associated hemophagocytic lymphohistiocytosis (EBV-HLH). In all HLH patients, we found the 30 bp deletion and 4-8-tandem repeats of the sequence DNGPQDPDNTD in the LMP1 gene. Furthermore, detailed amino acid (aa) sequence analysis revealed that 7 aa substitutions identical to those found in CAO-LMP1 but not in B95.8 cell line-LMP1 were found in all the HLH cases. NF-kappaB assay revealed that HLH-LMP1 activated NF-kappaB significantly more than that of B95.8-LMP1 (p=0.032). We conclude that EBV from all of our HLH cases shared common genetic characteristics with EBV obtained from the CAO cell line, which is distinct from the wild-type EBV isolated from the B95.8 cell line. These data suggest that the mutational changes of the LMP1 gene may play an important role in the pathogenesis of these fatal EBV-related disorders.
Collapse
MESH Headings
- Adolescent
- Adult
- Amino Acid Sequence
- Carcinoma/genetics
- Carcinoma/virology
- Cell Transformation, Viral
- Child
- Child, Preschool
- DNA Mutational Analysis
- DNA, Viral/genetics
- DNA, Viral/isolation & purification
- Epstein-Barr Virus Infections/complications
- Epstein-Barr Virus Infections/epidemiology
- Epstein-Barr Virus Infections/genetics
- Epstein-Barr Virus Infections/metabolism
- Female
- Gene Expression Regulation, Viral
- Herpesvirus 4, Human/genetics
- Herpesvirus 4, Human/isolation & purification
- Histiocytosis, Non-Langerhans-Cell/etiology
- Histiocytosis, Non-Langerhans-Cell/metabolism
- Histiocytosis, Non-Langerhans-Cell/mortality
- Humans
- Incidence
- Infant
- Japan/epidemiology
- Male
- Molecular Sequence Data
- NF-kappa B/metabolism
- Nasopharyngeal Neoplasms/genetics
- Nasopharyngeal Neoplasms/virology
- Repetitive Sequences, Amino Acid
- Sequence Alignment
- Sequence Deletion
- Sequence Homology, Amino Acid
- Transfection
- Tumor Virus Infections/genetics
- Tumor Virus Infections/virology
- Viral Matrix Proteins/biosynthesis
- Viral Matrix Proteins/genetics
Collapse
|
96
|
Furukawa H, Kishida A, Omura T, Kamiyama T, Matsushita M, Todo S. [Indication and system of living-related and cadaver liver transplantation in Japan]. [HOKKAIDO IGAKU ZASSHI] THE HOKKAIDO JOURNAL OF MEDICAL SCIENCE 2000; 75:219-22. [PMID: 10976400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
|
97
|
Yagi T, Hibi S, Tabata Y, Kuriyama K, Teramura T, Hashida T, Shimizu Y, Takimoto T, Todo S, Sawada T, Imashuku S. Detection of clonotypic IGH and TCR rearrangements in the neonatal blood spots of infants and children with B-cell precursor acute lymphoblastic leukemia. Blood 2000; 96:264-8. [PMID: 10891460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023] Open
Abstract
An attractive hypothesis is that in utero exposure of hematopoietic cells to oncogenic agents can induce molecular changes leading to overt acute lymphoblastic leukemia (ALL) in infants and perhaps older children as well. Although supported by studies of identical infant twins with concordant leukemia, and of nontwined patients with MLL gene rearrangements, this concept has not been extended to the larger population of B-lineage ALL patients who lack unique nonconstitutive mutations or abnormally rearranged genes. We therefore sought to demonstrate a prenatal origin for 7 cases of B-cell precursor ALL (either CD10(+) or CD10(-)) that had been diagnosed in infants and children 14 days to 9 years of age. Using a polymerase chain reaction-based assay, we identified the same clonotypic immunoglobulin heavy-chain complementarity determining region or T-cell receptor V(D)2-D(D)3 sequences in the neonatal blood spots (Guthrie card) and leukemic cell DNAs of 2 infants with CD10(-) ALL and 2 of the 5 older patients with CD10(+) ALL. Nucleotide sequencing showed a paucity of N or P regions and shortened D germ line and conserved J sequences, indicative of cells arising from fetal hematopoiesis. Our findings strongly suggest a prenatal origin for some cases of B-cell precursor ALL lacking specific clonotypic abnormalities.
Collapse
|
98
|
Yokota R, Fukai M, Shimamura T, Suzuki T, Watanabe Y, Nagashima K, Kishida A, Furukawa H, Hayashi T, Todo S. A novel hydroxyl radical scavenger, nicaraven, protects the liver from warm ischemia and reperfusion injury. Surgery 2000; 127:661-9. [PMID: 10840362 DOI: 10.1067/msy.2000.105864] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
BACKGROUND Reactive oxygen species have been considered to be involved in liver injury at the procurement, preservation, and transplantation from donors without beating hearts. A novel hydroxyl radical scavenger, nicaraven with hydrophilic and lipophilic properties, infiltrates both intracellular and extracellular spaces where it effectively scavenges reactive oxygen species. Protection by nicaraven against ischemia and reperfusion damage of the brain, heart, and kidneys has been shown. The effect of this agent on the liver remains unclear. METHODS Two-hour total hepatic vascular exclusion was used. Eighteen beagle dogs were randomly assigned to 2 groups: 12 animals were not treated (group I) and 6 were treated with nicaraven (group II). Nicaraven was administered intravenously (2mg/kg/min) for 60 minutes before ischemia and for 3 hours, starting 30 minutes before reperfusion. RESULTS Two-week survival rates were 25% in group I and 100% in group II (P <.01). Nicaraven inhibited lipid peroxidation in the liver, improved hepatic and systemic hemodynamics and energy metabolism, and suppressed liver enzyme release, endothelin-1 elevation in hepatic venous blood, histologic damage, and neutrophil infiltration into the liver. CONCLUSIONS Nicaraven exerted hepatic protection against warm ischemia and reperfusion injury. This may indicate nicaraven as a potential candidate to attenuate liver injury from warm ischemia and preservation in transplantation from donors without beating hearts.
Collapse
|
99
|
Furuuchi K, Tada M, Yamada H, Kataoka A, Furuuchi N, Hamada J, Takahashi M, Todo S, Moriuchi T. Somatic mutations of the APC gene in primary breast cancers. THE AMERICAN JOURNAL OF PATHOLOGY 2000; 156:1997-2005. [PMID: 10854222 PMCID: PMC1850076 DOI: 10.1016/s0002-9440(10)65072-9] [Citation(s) in RCA: 87] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
APC gene mutations play an important role in the initiation step of colorectal carcinogenesis in both familial adenomatous polyposis (FAP) patients and non-FAP patients. Although the APC gene is expressed in most tissues, including the lung, liver, kidney, and mammary gland, its somatic mutations have rarely been found in primary tumors affecting these organs. We have developed a sensitive yeast-based assay for screening almost the entire coding region of the APC gene. By this method, we have been able to detect somatic mutations of the APC gene in 57% of colorectal cancers and none in non-small cell lung cancers. Interestingly, the assay detected somatic APC gene mutations in 18% of breast cancers, in which APC gene mutation was previously considered rare. In the breast cancers, most of the APC mutations were distributed outside the mutation cluster region that has been advocated for colorectal cancers. We also noted a difference in the mutation pattern of the APC between colorectal and breast cancers. In colorectal cancers, all base substitutions were observed at C residues (5 of 5), whereas in breast cancers the majority of them were found at G residues (4 of 5). Furthermore, APC mutations were observed at a significantly high frequency in advanced stages of primary breast cancers (TNM classification, P < 0.05; T category, P < 0.01). Our data suggest that the etiology of the APC mutations and their biological role in carcinogenesis may differ between colorectal and breast cancers.
Collapse
|
100
|
Imashuku S, Hayashi S, Kuriyama K, Hibi S, Tabata Y, Todo S. Sudden death of a 21-year-old female with Williams syndrome showing rare complications. Pediatr Int 2000; 42:322-4. [PMID: 10881597 DOI: 10.1046/j.1442-200x.2000.01213.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|