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Watanabe K, Honda M, Watanabe T, Tsukada K, Teruya K, Kikuchi Y, Oka S, Gatanaga H. Emergence of raltegravir-resistant HIV-1 in the central nervous system. Int J STD AIDS 2011; 21:840-1. [PMID: 21297097 DOI: 10.1258/ijsa.2009.009283] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Integrase inhibitor-resistant HIV-1 was detected in the cerebrospinal fluid, but not in the plasma of a 42-year-old man with HIV encephalopathy treated with a raltegravir (RAL)-containing regimen. Raltegravir resistance may develop in the central nervous system when the virus is already multi-drug resistant because of different penetration into cerebrospinal fluid of individual antiretroviral agents.
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102
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Oba S, Tanaka S, Sano Y, Oka S, Chayama K. Current status of narrow-band imaging magnifying colonoscopy for colorectal neoplasia in Japan. Digestion 2011; 83:167-72. [PMID: 21266811 DOI: 10.1159/000321807] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The narrow-band imaging system can be used to examine the microvascular architecture and surface pattern on the mucosal surface with high sensitivity. The clinical significance of NBI observation is summarized as follows: (1) differential diagnosis of hyperplasia, adenoma, and carcinoma; (2) diagnosis according to the presence of a surface pattern as an alternative to magnifying endoscopic observation with dye spraying, and (3) determination of the invasion depth of an early colorectal carcinoma. However, at present, many NBI magnifying observation classifications for colorectal tumor exist in Japan. To internationally standardize the NBI observation criteria, a simple classification system is required. On the basis of these backgrounds, an international cooperative group (Colon Tumor NBI Interest Group - CTNIG) has developed a simple category classification (NICE classification: NBI International Colorectal Endoscopic Classification) which classifies NBI findings into types 1-3.
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103
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Kato H, Kagami Y, Kodaira T, Oka S, Oki Y, Chihara D, Taji H, Yatabe Y, Nakamura T, Nakamura S, Seto M, Yamamoto K, Morishima Y. Nodal relapse after Helicobacter pylori eradication in a patient with primary localized gastric mucosa-associated lymphoid tissue lymphoma. Am J Gastroenterol 2011; 106:549-51. [PMID: 21378774 DOI: 10.1038/ajg.2010.457] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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104
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Nakayama-Ichiyama S, Yokote T, Hiraoka N, Iwaki K, Takayama A, Kobayashi K, Akioka T, Oka S, Miyoshi T, Ishida S, Takubo T, Tsuji M, Hanafusa T. Multiple organ injury associated with neuromyelitis optica spectrum disorder in a low-grade B-cell lymphoma suspected of being follicular lymphoma. J Neurol 2010; 258:691-3. [PMID: 21042806 DOI: 10.1007/s00415-010-5802-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2010] [Revised: 10/09/2010] [Accepted: 10/11/2010] [Indexed: 11/25/2022]
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105
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Oka S, Hanagiri T, Takenaka M, Baba T, Yasuda M, Ono K, Uramoto H, Takenoyama M, Yasumoto K. [Surgical treatment for patients with descending necrotizing mediastinitis]. KYOBU GEKA. THE JAPANESE JOURNAL OF THORACIC SURGERY 2010; 63:1022-1025. [PMID: 21066840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Descending necrotizing mediastinitis (DNM) originating from deep cervical infection is a rare and serious clinical condition with a high mortality rate. Clinical feature of 5 patients undergone surgical drainage for DNM, between 2006 and 2009 were assessed. There were 3 male and 2 female patients whose age ranged from 57 to 83 years old (mean 69.8). All 5 patients had no underlying disease except for 1 patient with severe dental caries. The primary infections of these patients were tonsillitis and pharyngitis. The mean duration from onset of symptom to the referral to our hospital was 14 days (ranged 2 to approximately 41). Two patients underwent cervical drainage for upper mediastinum, and 3 patients were required mediastinal drainage by thoracotomy. There was no post-operative death. Early and aggressive surgical drainage of the neck and mediastinum by a multidisciplinary team of surgeons is very important in the treatment of DNM.
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Oyomopito R, Lee MP, Phanuphak P, Lim PL, Ditangco R, Zhou J, Sirisanthana T, Chen YMA, Pujari S, Kumarasamy N, Sungkanuparph S, Lee CKC, Kamarulzaman A, Oka S, Zhang FJ, Mean CV, Merati T, Tau G, Smith J, Li PCK. Measures of site resourcing predict virologic suppression, immunologic response and HIV disease progression following highly active antiretroviral therapy (HAART) in the TREAT Asia HIV Observational Database (TAHOD). HIV Med 2010; 11:519-29. [PMID: 20345881 PMCID: PMC2914850 DOI: 10.1111/j.1468-1293.2010.00822.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
OBJECTIVES Surrogate markers of HIV disease progression are HIV RNA in plasma viral load (VL) and CD4 cell count (immune function). Despite improved international access to antiretrovirals, surrogate marker diagnostics are not routinely available in resource-limited settings. Therefore, the objective was to assess effects of economic and diagnostic resourcing on patient treatment outcomes. METHODS Analyses were based on 2333 patients initiating highly active antiretroviral therapy (HAART) from 2000 onwards. Sites were categorized by World Bank country income criteria (high/low) and annual frequency of VL (> or = 3, 1-2 or <1) or CD4 (> or = 3 or <3) testing. Endpoints were time to AIDS/death and change in CD4 cell count and VL suppression (<400 HIV-1 RNA copies/mL) at 12 months. Demographics, Centers for Disease Control and Prevention (CDC) classification, baseline VL/CD4 cell counts, hepatitis B/C coinfections and HAART regimen were covariates. Time to AIDS/death was analysed by proportional hazards models. CD4 and VL endpoints were analysed using linear and logistic regression, respectively. RESULTS Increased disease progression was associated with site-reported VL testing less than once per year [hazard ratio (HR)=1.4; P=0.032], severely symptomatic HIV infection (HR=1.4; P=0.003) and hepatitis C virus coinfection (HR=1.8; P=0.011). A total of 1120 patients (48.2%) had change in CD4 cell count data. Smaller increases were associated with older age (P<0.001) and 'Other' HIV source exposures, including injecting drug use and blood products (P=0.043). A total of 785 patients (33.7%) contributed to the VL suppression analyses. Patients from sites with VL testing less than once per year [odds ratio (OR)=0.30; P<0.001] and reporting 'Other' HIV exposures experienced reduced suppression (OR=0.28; P<0.001). CONCLUSION Low measures of site resourcing were associated with less favourable patient outcomes, including a 35% increase in disease progression in patients from sites with VL testing less than once per year.
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Nakayama S, Yokote T, Kobayashi K, Hirata Y, Akioka T, Hiraoka N, Oka S, Miyoshi T, Takubo T, Tsuji M, Hanafusa T. Minimal-change nephrotic syndrome preceding Hodgkin lymphoma by 5 years with expression of tumor necrosis factor alpha in Hodgkin-Reed-Sternberg cells. Hum Pathol 2010; 41:1196-9. [PMID: 20624522 DOI: 10.1016/j.humpath.2010.01.021] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/25/2009] [Revised: 12/07/2009] [Accepted: 01/04/2010] [Indexed: 10/19/2022]
Abstract
A 76-year-old man developed minimal-change nephrotic syndrome (NS). After treatment with prednisolone failed to induce sustained remission, cyclosporin was added. The NS improved, and prednisolone and cyclosporin doses were gradually decreased. However, he had repeated relapses of the syndrome, and at each relapse, the drug doses were increased. After 5 years, the patient developed left inguinal lymphadenopathy. The histological diagnosis was mixed cellularity classical Hodgkin lymphoma. He received 6 courses of ABVD (doxorubicin, bleomycin, vinblastine, and dacarbazine), and mixed cellularity classical Hodgkin lymphoma and NS both showed complete response. Although the association between Hodgkin lymphoma and minimal-change NS is well known, the pathogenesis is unknown. To the best of our knowledge, this is the first case report of minimal-change NS associated with Hodgkin lymphoma in which Hodgkin-Reed-Sternberg cells were immunostained for tumor necrosis factor-alpha (TNF-alpha) clearly demonstrating that Hodgkin-Reed-Sternberg produced TNF-alpha and in which the plasma level of TNF-alpha normalized after improvement of Hodgkin lymphoma by chemotherapy. The production of TNF-alpha by Hodgkin-Reed-Sternberg cells might play a key role as a potential mediator of minimal-change NS.
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108
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Hiraoka N, Yokote T, Nakayama-Ichiyama S, Takayama A, Iwaki K, Kobayashi K, Oka S, Miyoshi T, Akioka T, Takubo T, Tsuji M, Hanafusa T. High fever and shock induced by interferon-γ and interleukin-6 produced by adult T-cell leukaemia/lymphoma cells. Leuk Res 2010; 34:e290-1. [PMID: 20650530 DOI: 10.1016/j.leukres.2010.06.025] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2010] [Revised: 06/24/2010] [Accepted: 06/28/2010] [Indexed: 11/18/2022]
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109
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Nakayama-Ichiyama S, Yokote T, Hiraoka N, Takayama A, Iwaki K, Kobayashi K, Akioka T, Oka S, Miyoshi T, Takubo T, Tsuji M, Hanafusa T. Central nervous system involvement in adult T-cell lymphoma diagnosed with T-cell receptor gene clonality testing of cerebrospinal fluid. Br J Haematol 2010; 150:629-32. [PMID: 20497173 DOI: 10.1111/j.1365-2141.2010.08242.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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110
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Nakayama S, Yokote T, Kobayashi K, Hirata Y, Akioka T, Miyoshi T, Oka S, Hiraoka N, Iwaki K, Takayama A, Takubo T, Tsuji M, Hanafusa T. Primary cutaneous diffuse large B-cell lymphoma, leg type, with features simulating POEMS syndrome. Eur J Haematol 2010; 84:79-83. [PMID: 19558504 DOI: 10.1111/j.1600-0609.2009.01307.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
A 91-year-old woman presented with a rapidly proliferative cutaneous lesion on the left lower limb, which was identified as a primary cutaneous diffuse large B-cell lymphoma (PCLBCL), leg type, on biopsy. The patient also showed complications of hepatomegaly, endocrinopathy, edema, skin change, and polyneuropathy without monoclonal plasma cell proliferative disorder, and was therefore diagnosed with POEMS-like syndrome owing to the lack of monoclonal plasma cell proliferative disorder. Levels of serum vascular endothelial growth factor (VEGF) and interleukin-6 (IL-6) were high with the lymphoma cells immunostained positively for VEGF and IL-6. To the best of our knowledge, this is the first case report of PCLBCL, leg type, with POEMS-like syndrome. The findings in this case suggest that the symptoms of POEMS-like syndrome might be caused by the cytokines produced by the lymphoma cells. Furthermore, a wider range of diagnostic criteria associated with the result of abnormal secretion of cytokine may have to be considered for the diagnosis and evaluation of patients with possible POEMS syndrome, as against the present criteria specifying monoclonal plasma cell proliferative disorder as the essential criterion.
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Hirata Y, Yokote T, Kobayashi K, Nakayama S, Oka S, Miyoshi T, Akioka T, Hiraoka N, Iwaki K, Takayama A, Nishimura Y, Makino J, Takubo T, Tsuji M, Hanafusa T. Antifungal prophylaxis with micafungin in neutropenic patients with hematological malignancies. Leuk Lymphoma 2010; 51:853-9. [DOI: 10.3109/10428191003682726] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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112
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Nakayama-Ichiyama S, Yokote T, Oka S, Iwaki K, Kobayashi K, Akioka T, Hiraoka N, Takayama A, Takubo T, Tsuji M, Hanafusa T. Multiple-cytokine-producing CD30-positive diffuse large B-cell lymphoma. Leuk Res 2010; 34:e164-6. [PMID: 20167370 DOI: 10.1016/j.leukres.2010.01.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2009] [Revised: 01/24/2010] [Accepted: 01/25/2010] [Indexed: 11/30/2022]
MESH Headings
- Aged
- Antibodies, Monoclonal/administration & dosage
- Antibodies, Monoclonal, Murine-Derived
- Antigens, CD/analysis
- Antineoplastic Combined Chemotherapy Protocols/therapeutic use
- B-Lymphocytes/chemistry
- B-Lymphocytes/pathology
- C-Reactive Protein/analysis
- Combined Modality Therapy
- Cyclophosphamide/administration & dosage
- Doxorubicin/administration & dosage
- Humans
- Immunophenotyping
- Interleukin-6/blood
- Interleukin-6/metabolism
- Ki-1 Antigen/analysis
- Lymphoma, Large B-Cell, Diffuse/blood
- Lymphoma, Large B-Cell, Diffuse/chemistry
- Lymphoma, Large B-Cell, Diffuse/drug therapy
- Lymphoma, Large B-Cell, Diffuse/pathology
- Lymphoma, Large B-Cell, Diffuse/surgery
- Male
- Prednisolone/administration & dosage
- Rituximab
- Splenectomy
- Tumor Necrosis Factor-alpha/analysis
- Tumor Necrosis Factor-alpha/metabolism
- Vincristine/administration & dosage
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Nakayama-Ichiyama S, Yokote T, Oka S, Takubo T, Tsuji M, Hanafusa T. Macrophage colony-stimulating factor produced by diffuse large B-cell lymphoma. Br J Haematol 2010; 149:310. [PMID: 20085576 DOI: 10.1111/j.1365-2141.2009.08050.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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114
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Behmanesh M, Sakumi K, Abolhassani N, Toyokuni S, Oka S, Ohnishi YN, Tsuchimoto D, Nakabeppu Y. ITPase-deficient mice show growth retardation and die before weaning. Cell Death Differ 2009; 16:1315-22. [PMID: 19498443 DOI: 10.1038/cdd.2009.53] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
Inosine triphosphate pyrophosphatase (ITPase), the enzyme that hydrolyzes ITP and other deaminated purine nucleoside triphosphates to the corresponding purine nucleoside monophosphate and pyrophosphate, is encoded by the Itpa gene. In this study, we established Itpa knockout (KO) mice and used them to show that ITPase is required for the normal organization of sarcomeres in the heart. Itpa(-/-) mice died about 2 weeks after birth with features of growth retardation and cardiac myofiber disarray, similar to the phenotype of the cardiac alpha-actin KO mouse. Inosine nucleotides were found to accumulate in both the nucleotide pool and RNA of Itpa(-/-) mice. These data suggest that the role of ITPase in mice is to exclude ITP from the ATP pool, and the main target substrate of this enzyme is rITP. Our data also suggest that cardiomyopathy, which is mainly caused by mutations in sarcomeric protein-encoding genes, is also caused by a defect in maintaining the quality of the ATP pool, which is an essential requirement for sarcomere function.
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Sakai K, Gatanaga H, Oka S, Takiguchi M. P16-22. In impact of nadir CD4 counts on skewed distributions of functional subsets in peripheral CD4+ T cells in patients chronically infected with HIV-1. Retrovirology 2009. [PMCID: PMC2767750 DOI: 10.1186/1742-4690-6-s3-p251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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116
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Murakoshi H, Gatanaga H, Koyanagi M, Oka S, Takiguchi M. P16-06. Control of HIV-1 by HIV-1 Pol-specific CD8+ T cells in chronically HIV-1-infected Japanese cohort. Retrovirology 2009. [PMCID: PMC2767732 DOI: 10.1186/1742-4690-6-s3-p235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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117
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Morita I, Kakuda S, Takeuchi Y, Kawasaki T, Oka S. HNK-1 (human natural killer-1) glyco-epitope is essential for normal spine morphogenesis in developing hippocampal neurons. Neuroscience 2009; 164:1685-94. [PMID: 19796667 DOI: 10.1016/j.neuroscience.2009.09.065] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2009] [Revised: 09/02/2009] [Accepted: 09/24/2009] [Indexed: 01/12/2023]
Abstract
The human natural killer-1 (HNK-1) glyco-epitope possesses a unique structural feature, a sulfated glucuronic acid attached to lactosamine on the non-reducing termini of glycans. The expression of HNK-1 is temporally and spatially regulated by glucuronyltransferase (GlcAT-P) in the brain. Our previous report showed that mice lacking GlcAT-P almost completely lost HNK-1 expression in the brain and exhibited reduced long-term potentiation (LTP) at hippocampal CA1 synapses. GlcAT-P-deficient mice also showed impaired hippocampus-dependent spatial learning. Although HNK-1 plays an essential role in synaptic plasticity and memory formation, it remains unclear how HNK-1 regulates these functions. In this study, we showed that loss of the HNK-1 epitope resulted in an increase of filopodium-like immature spines and a decrease of mushroom-like mature spines in both the early postnatal mouse hippocampus and cultured hippocampal neurons. However, HNK-1 had no influence on spine density or filopodium formation. Immunofluorescence staining revealed that loss of HNK-1 altered the distribution of postsynaptic proteins such as alpha-amino-3-hydroxy-5-methylisoxazolepropionate (AMPA)-type glutamate receptor subunit GluR2 and PSD-95 from spine heads onto dendritic shafts without affecting synapse formation, resulting in an increase of shaft synapses in cultured GlcAT-P-deficient neurons. GluR2, a major HNK-1 carrier glycoprotein in postsynaptic density, has the ability to promote spine morphogenesis. Overexpression of GluR2 promoted spine growth in both wild-type and GlcAT-P-deficient neurons, but the increase in GlcAT-P-deficient neurons was lower than that in wild-type neurons. This is the first evidence that HNK-1 is a key factor for normal dendritic spine maturation and is involved in the distribution of postsynaptic proteins.
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118
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Nakayama S, Yokote T, Kobayashi K, Hirata Y, Akioka T, Miyoshi T, Oka S, Hiraoka N, Iwaki K, Takayama A, Fukui H, Tsuda Y, Takubo T, Tsuji M, Higuchi K, Hanafusa T. Primary hepatic MALT lymphoma associated with primary biliary cirrhosis. Leuk Res 2009; 34:e17-20. [PMID: 19679352 DOI: 10.1016/j.leukres.2009.07.031] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2009] [Revised: 07/19/2009] [Accepted: 07/20/2009] [Indexed: 11/19/2022]
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119
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Nishihara R, Sugano N, Takano M, Shimada T, Tanaka H, Oka S, Ito K. The effect of Porphyromonas gingivalis infection on cytokine levels in type 2 diabetic mice. J Periodontal Res 2009; 44:305-10. [PMID: 19462491 DOI: 10.1111/j.1600-0765.2008.01130.x] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
BACKGROUND AND OBJECTIVE Several studies have shown that diabetes mellitus increases the severity of periodontitis. Conversely, periodontitis has been shown to have an impact on diabetes, although the underlying mechanisms of this are unclear. The aim of this study was to compare the inflammatory response to Porphyromonas gingivalis infection in normal and diabetic mice. MATERIAL AND METHODS Porphyromonas gingivalis were inoculated adjacent to the periosteum, at a point on the midline of the skull located between the ears, in C57BL/6 (normal) and KKAy (diabetic) mice. After induction, the levels of tumor necrosis factor-alpha, interleukin-6 and adiponectin in the mice were measured using real-time polymerase chain reaction and enzyme-linked immunosorbent assay. RESULTS The KKAy mice showed significant increases in blood glucose, serum tumor necrosis factor-alpha and interleukin-6 levels after inoculation with Porphyromonas gingivalis, and a significant decrease in adiponectin to 35.7%. Similar results were observed at the mRNA level in liver and visceral adipose tissue. CONCLUSION These observations suggest that tumor necrosis factor-alpha, interleukin-6 and adiponectin are an integral part of the link between diabetes mellitus and Porphyromonas gingivalis infection.
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Oka S, Nagatsuka Y, Kikuchi J, Yokote T, Hirabayashi Y, Hanafusa T, Ozawa K, Muroi K. Preferential expression of phosphatidylglucoside along neutrophil differentiation pathway. Leuk Lymphoma 2009; 50:1190-7. [DOI: 10.1080/10428190902934928] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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121
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Nakayama S, Yokote T, Kobayashi K, Hirata Y, Akioka T, Miyoshi T, Oka S, Iwaki K, Hiraoka N, Takayama A, Takubo T, Tsuji M, Hanafusa T. Primary cutaneous diffuse large B-cell lymphoma, leg type, with expression of both vascular endothelial growth factor and its receptors. Leuk Res 2009; 33:e181-3. [PMID: 19589592 DOI: 10.1016/j.leukres.2009.05.019] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2009] [Revised: 05/21/2009] [Accepted: 05/25/2009] [Indexed: 11/25/2022]
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122
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Zhou J, Li PCK, Kumarasamy N, Boyd M, Chen YMA, Sirisanthana T, Sungkanuparph S, Oka S, Tau G, Phanuphak P, Saphonn V, Zhang FJ, Omar SFS, Lee CKC, Ditangco R, Merati TP, Lim PL, Choi JY, Law MG, Pujari S. Deferred modification of antiretroviral regimen following documented treatment failure in Asia: results from the TREAT Asia HIV Observational Database (TAHOD). HIV Med 2009; 11:31-9. [PMID: 19601993 DOI: 10.1111/j.1468-1293.2009.00738.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
OBJECTIVE The aim of the study was to examine the rates and predictors of treatment modification following combination antiretroviral therapy (cART) failure in Asian patients with HIV enrolled in the TREAT Asia HIV Observational Database (TAHOD). METHODS Treatment failure (immunological, virological and clinical) was defined by World Health Organization criteria. Countries were categorized as high or low income by World Bank criteria. RESULTS Among 2446 patients who initiated cART, 447 were documented to have developed treatment failure over 5697 person-years (7.8 per 100 person-years). A total of 253 patients changed at least one drug after failure (51.6 per 100 person-years). There was no difference between patients from high- and low-income countries [adjusted hazard ratio (HR) 1.02; P=0.891]. Advanced disease stage [Centers for Disease Control and Prevention (CDC) category C vs. A; adjusted HR 1.38, P=0.040], a lower CD4 count (>or=51 cells/microL vs. <or=50 cells/microL; adjusted HR 0.61, P=0.022) and a higher HIV viral load (>or=400 HIV-1 RNA copies/mL vs. <400 copies/mL; adjusted HR 2.69, P<0.001) were associated with a higher rate of treatment modification after failure. Compared with patients from low-income countries, patients from high-income countries were more likely to change two or more drugs (67%vs. 49%; P=0.009) and to change to a protease-inhibitor-containing regimen (48%vs. 16%; P<0.001). CONCLUSIONS In a cohort of Asian patients with HIV infection, nearly half remained on the failing regimen in the first year following documented treatment failure. This deferred modification is likely to have negative implications for accumulation of drug resistance and response to second-line treatment. There is a need to scale up the availability of second-line regimens and virological monitoring in this region.
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Kobayashi K, Yokote T, Akioka T, Hara S, Hiraoka N, Oka S, Nakayama S, Miyoshi T, Hirata Y, Takubo T, Tsuji M, Hanafusa T. Granulocyte colony-stimulating factor and interleukin-6 production by myelodysplastic syndrome blasts. Leuk Lymphoma 2009; 49:589-91. [DOI: 10.1080/10428190701861678] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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124
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Davaalkham J, Unenchimeg P, Baigalmaa C, Oyunbileg B, Tsuchiya K, Hachiya A, Gatanaga H, Nyamkhuu D, Oka S. High-risk status of HIV-1 infection in the very low epidemic country, Mongolia, 2007. Int J STD AIDS 2009; 20:391-4. [DOI: 10.1258/ijsa.2008.008376] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Thirty-six HIV-1 cases had been reported by December 2007 in Mongolia. Therefore, Mongolia has been regarded as a very low HIV-1 epidemic country, although the surveillance system is not fully developed. The aim of this study was to evaluate the risk status of HIV-1 infection in Mongolia. A total of 1415 blood samples from high-risk populations including female sex workers, men who have sex with men, mobile men, tuberculosis patients and male sexually transmitted infection (STI) clinic clients and 1050 samples from healthy controls were collected. The seroprevalences of anti-HIV-1/2, anti- Treponema pallidum, hepatitis B surface antigen (HBs Ag), anti-hepatitis C virus and hepatitis B surface antibody in the high-risk populations were 0%, 23.1%, 15.5%, 8.0% and 48.2%, and those in the controls were 0%, 3.1%, 14.7%, 4.4% and 44.4%, respectively. HIV-1 prevalence is currently low. However, according to the high prevalence of STIs in the high-risk populations, the risk status for HIV-1 infection is estimated to be high.
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Honda H, Gatanaga H, Matsumura J, Kamimura M, Goto K, Tsukada K, Honda M, Teruya K, Kikuchi Y, Oka S. Favourable use of non-boosted fosamprenavir in patients treated with warfarin. Int J STD AIDS 2009; 20:441. [DOI: 10.1258/ijsa.2009.009108] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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126
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Urabe Y, Hiyama T, Tanaka S, Oka S, Yoshihara M, Arihiro K, Chayama K. Metachronous multiple esophageal squamous cell carcinomas and Lugol-voiding lesions after endoscopic mucosal resection. Endoscopy 2009; 41:304-9. [PMID: 19340732 DOI: 10.1055/s-0029-1214477] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND AND STUDY AIMS Endoscopic mucosal resection (EMR) has been applied to the treatment of superficial esophageal squamous cell carcinoma (SCC). The incidence and characteristics of metachronous multiple esophageal SCCs and Lugol-voiding lesions (LVLs) were investigated in a retrospective study in patients who had undergone EMR for superficial esophageal SCC. PATIENTS AND METHODS 96 patients with esophageal SCC who had been treated by EMR were followed up by endoscopy for 12 months or longer. Clinicopathologic parameters such as tumor size and location and presence of LVLs were examined. RESULTS 10 patients (10 %) had synchronous multiple SCCs, and 12 (13 %) developed metachronous multiple SCCs. The mean annual incidence of newly diagnosed tumor was 4.4 %. The incidence of a speckled pattern of LVLs was 20/74 (27 %) in patients with solitary SCC, 5/10 (50 %) in synchronous multiple SCC, and 10/12 (83 %) in metachronous multiple SCC. The incidence of the presence of speckled pattern of LVLs was significantly higher in patients with multiple SCCs than in those with solitary SCC (68 % vs. 27 %, P = 0.0004). CONCLUSIONS Patients who have undergone EMR for esophageal SCC, especially those with metachronous multiple LVLs in the background mucosa, should undergo follow-up with close endoscopic observation using Lugol staining.
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127
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Oka S, Muroi K, Mori M, Matsuyama T, Fujiwara SI, Oh I, Sato K, Kikuchi S, Ueda M, Toshima M, Suzuki T, Ozaki K, Nagai T, Ozawa K. Prediction of response to imatinib in patients with chronic myelogenous leukemia by flow cytometric analysis of bone marrow blastic cell phenotypes. Leuk Lymphoma 2009; 50:290-3. [PMID: 19197727 DOI: 10.1080/10428190802627598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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128
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Ueda K, Shimizu O, Oka S, Saito M, Hide M, Matsumoto M. Distribution of tenascin-C, fibronectin and collagen types III and IV during regeneration of rat submandibular gland. Int J Oral Maxillofac Surg 2008; 38:79-84. [PMID: 19097859 DOI: 10.1016/j.ijom.2008.11.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2007] [Revised: 06/24/2008] [Accepted: 11/03/2008] [Indexed: 11/16/2022]
Abstract
The aim of this study was to determine the localization of tenascin-C, fibronectin and collagen types III and IV during regeneration of the rat submandibular gland. After 7 days' obstruction, the regenerating glands were collected at days 0, 1, 3, 5, 7, 11 and 14 after duct release to study regeneration. Immunohistochemical staining revealed that tenascin-C was strongly expressed in the epithelial cells of duct-acinar structures at days 0-3, and down-regulated in its expression from day 5 to 11, though weak expression was detected in the intercalated duct and acinar cells of the normal gland. Strong labeling of fibronectin was detected around duct-acinar structures during days 0-3 of regeneration. Type IV collagen was expressed strongly in the thickened basement membrane of acinar cells and duct-acinar structures during days 0-3, but weakly around large ducts, though type III collagen was expressed at consistent levels. These findings suggest that tenascin-C and fibronectin affect only the duct-acinar structures, and type IV but not type III collagen is involved in the regeneration of acinar cells.
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129
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Nakanishi R, Yamashita T, Oka S. Initial experience of video-assisted thoracic surgery lobectomy with partial removal of the pulmonary artery. Interact Cardiovasc Thorac Surg 2008; 7:996-1000. [DOI: 10.1510/icvts.2008.184564] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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130
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Oka S, Toshida T, Maruyama K, Nakajima K, Yamashita A, Sugiura T. 2-Arachidonoyl-sn-glycero-3-phosphoinositol: A Possible Natural Ligand for GPR55. J Biochem 2008; 145:13-20. [DOI: 10.1093/jb/mvn136] [Citation(s) in RCA: 142] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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131
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Ashizuka M, Oyama Y, Kubota Y, Ikari T, Oka S, Inoue Y, Shirasuna K. P.362 Mucinous adenocarcinoma of the sublingual gland. J Craniomaxillofac Surg 2008. [DOI: 10.1016/s1010-5182(08)72150-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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132
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Oka S. Unexpected reactions following highly active anti‐retroviral therapy in patients with HIV‐1 infection and tuberculosis. Respirology 2008. [DOI: 10.1111/j.1440-1843.2000.00288.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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133
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Oka S, Muroi K, Toshima M, Nagai T, Kanai N, Morita T, Ozawa K. Amyloidosis and myelodysplastic syndrome. Intern Med 2008; 47:123-4. [PMID: 18195504 DOI: 10.2169/internalmedicine.47.0533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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134
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Kobayashi K, Yokote T, Akioka T, Hiraoka N, Oka S, Hara S, Miyoshi T, Hirata Y, Takubo T, Tsuji M, Hanafusa T. Unique intestinal CT imaging with bleeding from a duodenal diverticulum following myelodysplastic syndrome. Intern Med 2008; 47:1039-41. [PMID: 18520117 DOI: 10.2169/internalmedicine.47.0856] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Duodenal diverticula generally occur in 2.5% of upper gastrointestinal examinations and are usually asymptomatic, but can cause hemorrhage on rare occasions. The frequency of gastrointestinal hemorrhage in patients with MDS or hematologic neoplasm caused by duodenal diverticulum is not known. Therefore, the correct diagnosis of intestinal hemorrhage is important, as severe enterocolitis may cause a patient with MDS to bleed from the diverticulum.
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135
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Hara S, Yokote T, Oka S, Akioka T, Kobayashi K, Hirata Y, Miyoshi T, Tsuji M, Hanafusa T. Endophthalmitis due to Trichosporon beigelii in acute leukemia. Int J Hematol 2007; 85:415-7. [PMID: 17562617 DOI: 10.1532/ijh97.06228] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
We describe 2 patients with hematologic malignancy who developed endophthalmitis due to Trichosporon beigelii during the course of treatment with multiagent chemotherapy. Blood cultures revealed T beigelii for both patients. Although one of the patients was treated with fluconazole (FLCZ) and 5-fluorocytosine, the trichosporonous endophthalmitis was resistant to both drugs. This patient subsequently received amphotericin B (AMPH-B) therapy, and the eyes were treated with vitrectomy. The second patient also received AMPH-B for FLCZ-resistant trichosporonous chorioretinitis. In both patients, systemic treatment with AMPH-B successfully resolved the trichosporonous endophthalmitis that was resistant to multiple antifungal drugs. Endophthalmitis due to trichosporonosis is difficult to treat. The administration of AMPH-B is likely to be more effective in treating endophthalmitis due to trichosporonosis when the disease is at an early stage.
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136
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Kobayashi K, Yokote T, Akioka T, Hara S, Oka S, Hiraoka N, Hirata Y, Miyoshi T, Tsuji M, Hanafusa T. [Vascular endothelial growth factor and interleukin 6 production by Hodgkin lymphoma]. Gan To Kagaku Ryoho 2007; 34:1327-30. [PMID: 17687225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
A 20-year-old man complained of fever, general lymphadenopathy, severe lumbago, and gynecomastia in January 2003. The diagnosis of Hodgkin lymphoma was confirmed by biopsy specimens of the right supraclavicular lymph node. The clinical stage was IIIB, and the prognostic score was 3. Plasma levels of interleukin 6 (IL-6) and vascular endothelial growth factor (VEGF) were elevated to 446 pg/mL, and 1,710 pg/mL,respectively. Six-course combination chemotherapy with the ABVD regimen was initiated,and a complete response (CR) was achieved. Clinical signs disappeared and plasma levels of IL-6 and VEGF decreased to 5.0 pg/mL and 100 pg/mL, respectively. The patient remained in CR as of December 2006. Elevated IL-6 and VEGF may be appropriate tumor markers for patients with Hodgkin lymphoma.
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Mori M, Muroi K, Matsuyama T, Oka S, Ono Y, Yamamoto C, Uesawa M, Okabe H, Matsu H, Tatara R, Kikuchi Y, Fujiwara S, Kikuchi S, Sato K, Ueda M, Toshima M, Ozaki K, Takatoku M, Nagai T, Ozawa K. [Benefits of mycophenolate mofetil for refractory graft-versus-host disease]. [RINSHO KETSUEKI] THE JAPANESE JOURNAL OF CLINICAL HEMATOLOGY 2007; 48:624-31. [PMID: 17867298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
We retrospectively evaluated the efficacy of mycophenolate mofetil (MMF) in the treatment of steroid-resistant acute and chronic graft-versus-host disease (GVHD) after hematopoietic stem cell transplantation. Thirteen patients, ten men and three women, consisted of 5 cases of acute myelogenous leukemia, 2 of acute lymphoblastic leukemia, 2 of chronic myelogenous leukemia, 2 of lymphoblastic lymphoma, and 1 case each of adult T-cell leukemia and peripheral T-cell lymphoma. The transfusions consisted of 5 peripheral blood, 7 bone marrow and 1 cord blood from 3 mothers, 4 siblings and 6 unrelated donors with conditioning treatments, including 8 total-body irradiation-based regimens, and 2 busulfan plus cyclophosphamide and 2 reduced-intensity regimens. GVHD prophylaxis included FK506 plus methotrexate (MTX) and/or antithymocyte globulin for 9 patients, and cyclosporine and MTX for 4 patients. All patients were treated with second-line MMF for steroid-refractory acute and/or chronic GVHD, and 11 patients improved. The adverse events were tolerable except for one patient in whom grade 3 neutropenia forced discontinuation of treatment. No case of non-relapse mortality occurred. We consider that MMF is beneficial and well tolerated for treatment of steroid-refractory GVHD.
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138
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Kobayashi K, Yokote T, Akioka T, Hara S, Oka S, Hirata Y, Miyoshi T, Tsuji M, Hanafusa T. [Primary gastric T-cell lymphoma with predominant bone marrow infiltration undergoing aggressive clinical course]. Gan To Kagaku Ryoho 2007; 34:647-51. [PMID: 17431359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
A 63-year-old man complained of high fever, epigastralgia, and severe cytopenia in June, 2005. Upper gastroduodenal endoscopy revealed a gastric tumor in the greater curvature of the body. Biopsy specimens showed the infiltration of medium-sized abnormal cells. Bone marrow biopsy also indicated infiltration of the medium-sized abnormal cells. Immunophenotyping with abnormal cells was positive for CD 3, negative for CD 20 and cytokeratin. Serum investigation showed human T-cell lymphotropic virus-1 (HTLV-1) antibody below 16 fold. The diagnosis was HTLV-1 unassociated primary gastric T-cell lymphoma with bone marrow infiltration. After undergoing oral chemotherapy with VP-16 at 25 mg/day, combination chemotherapy was initiated with vincristine 2 mg/day and dexamethasone 48 mg/day. The man died with the aggressive clinical course after combination chemotherapy.
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139
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Oka S, Yokote T, Akioka T, Hara S, Kobayashi K, Hirata Y, Hiraoka N, Tsuji M, Hanafusa T. Trisomy 21 as the Sole Acquired Karyotypic Abnormality in Biphenotypic Acute Leukemia. Int J Hematol 2007; 85:270-2. [PMID: 17483067 DOI: 10.1532/ijh97.06223] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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140
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Vasilescu A, Terashima Y, Enomoto M, Heath S, Poonpiriya V, Gatanaga H, Do H, Diop G, Hirtzig T, Auewarakul P, Lauhakirti D, Sura T, Charneau P, Marullo S, Therwath A, Oka S, Kanegasaki S, Lathrop M, Matsushima K, Zagury JF, Matsuda F. A haplotype of the human CXCR1 gene protective against rapid disease progression in HIV-1+ patients. Proc Natl Acad Sci U S A 2007; 104:3354-9. [PMID: 17360650 PMCID: PMC1805621 DOI: 10.1073/pnas.0611670104] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2006] [Indexed: 11/18/2022] Open
Abstract
Chemokines and their receptors are key factors in the onset and progression of AIDS. Among them, accumulating evidence strongly indicates the involvement of IL-8 and its receptors, CXCR1 and CXCR2, in AIDS-related conditions. Through extensive investigation of genetic variations of the human CXCR1-CXCR2 locus, we identified a haplotype of the CXCR1 gene (CXCR1-Ha) carrying two nonsynonymous single nucleotide polymorphisms, CXCR1_300 (Met to Arg) in the N terminus extracellular domain and CXCR1_142 (Arg to Cys) in the C terminus intracellular domain. Transfection experiments with CXCR1 cDNAs corresponding to the CXCR1-Ha and the alternative CXCR1-HA haplotype showed reduced expression of CD4 and CXCR4 in CXCR1-Ha cells in human osteosarcoma cells as well as in Jurkat and CEM human T lymphocytes. Furthermore, the efficiency of X4-tropic HIV-1(NL4-3) infection was significantly lower in CXCR1-Ha cells than in CXCR1-HA cells. The results were further confirmed by a series of experiments using six HIV-1 clinical isolates from AIDS patients. A genetic association study was performed by using an HIV-1(+) patient cohort consisting of two subpopulations of AIDS with extreme phenotypes of rapid and slow progression of the disease. The frequency of the CXCR1-Ha allele is markedly less frequent in patients with rapid disease onset than those with slow progression (P = 0.0003). These results provide strong evidence of a protective role of the CXCR1-Ha allele on disease progression in AIDS, probably acting through modulation of CD4 and CXCR4 expression.
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141
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Oka S, Muroi K, Mori M, Matsuyama T, Fujiwara SI, Oh I, Ono Y, Kikuchi S, Sato K, Ueda M, Toshima M, Ozaki K, Takatoku M, Nagai T, Ozawa K. Evaluation of platelet transfusion thresholds in patients with acute myeloblastic leukemia receiving induction chemotherapy. Intern Med 2007; 46:1669-70. [PMID: 17917331 DOI: 10.2169/internalmedicine.46.0345] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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142
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Oka S, Tanaka S, Kaneko I, Mouri R, Hirata M, Kanao H, Kawamura T, Yoshida S, Yoshihara M, Chayama K. Endoscopic submucosal dissection for residual/local recurrence of early gastric cancer after endoscopic mucosal resection. Endoscopy 2006; 38:996-1000. [PMID: 17058164 DOI: 10.1055/s-2006-944780] [Citation(s) in RCA: 92] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
BACKGROUND AND STUDY AIMS Endoscopic mucosal resection (EMR) is a widely accepted treatment for early gastric cancer; however, incomplete resection with residual local disease and recurrences continues to be a difficult problem. The aim of this study was to evaluate the efficacy and safety of endoscopic submucosal dissection (ESD) for residual/local recurrent early gastric cancer lesions after EMR. PATIENTS AND METHODS The en bloc resection rate, histologically complete resection rate, complications, and local recurrence were assessed in 15 patients who underwent ESD for residual/local recurrent early gastric cancer lesions after EMR. RESULTS The nonlifting sign after injection of a glycerin solution was positive due to scar formation in all cases. En bloc resection was attempted in all cases, with a complete resection rate of 93.3 % (14 of 15). The lesion was completely resected with histologically adequate margins in the 14 patients who received complete en bloc resection. The average operation time was 85.4 +/- 52.9 min, and the mean follow-up period for all patients was 18.1 +/- 7.4 months. Major bleeding during the procedure in one case was the only complication (one of 15, 6.7 %). None of the patients experienced recurrence of early gastric cancer after ESD. CONCLUSIONS ESD appears to be a safe and effective treatment for residual/local recurrent early gastric cancer lesions after EMR, and it is useful for histological confirmation of successful treatment.
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143
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Yokote T, Akioka T, Oka S, Hara S, Kobayashi K, Hirata Y, Yamano T, Tsuji M, Hanafusa T. Cutaneous infiltration with Waldenström macroglobulinemia. Leuk Res 2006; 30:1207-10. [PMID: 16530829 DOI: 10.1016/j.leukres.2006.02.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2005] [Revised: 02/01/2006] [Accepted: 02/01/2006] [Indexed: 10/24/2022]
Abstract
A 59-year-old Japanese man was diagnosed as Waldenström macroglobulinema. With impaired general performance and a 2-year history of pruritic eruptions that were initially confined to the forearms, but later involved the face, limbs, and trunk. A skin biopsy that was performed on the forehead showed infiltration with abnormal cells of the dermis around the central vessels. PCR analysis of the skin biopsy showed immunoglobulin heavy chain rearrangement. As the rearrangement band occurred at the same site as that of the bone marrow aspiration, skin infiltration with abnormal cells was proven.
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144
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Oka S, Kim B, Imamura Y, Nakajima I, Oi Y. 873 PUPIL DILATION RESPONSE TO NOXIOUS STIMULATION: EFFECT OF VARYING STIMULUS PATTERN. Eur J Pain 2006. [DOI: 10.1016/s1090-3801(06)60876-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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145
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Oka S, Yokote T, Hiraiwa T, Akioka T, Hara S, Kobayashi K, Hirata Y, Yamano T, Tanimoto K, Tsuji M, Hanafusa T. Hyperthyroidism associated with Philadelphia-chromosome-positive acute lymphoblastic leukemia. J Clin Oncol 2006; 24:3500-2. [PMID: 16849768 DOI: 10.1200/jco.2005.04.9932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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146
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Oka S, Yokote T, Akioka T, Hara S, Kobayashi K, Hirata Y, Tuji M, Hanafusa T. [Septic shock induced by Serratia marcescens complicating adult T-cell leukemia (ATL)]. KANSENSHOGAKU ZASSHI. THE JOURNAL OF THE JAPANESE ASSOCIATION FOR INFECTIOUS DISEASES 2006; 80:257-61. [PMID: 16780133 DOI: 10.11150/kansenshogakuzasshi1970.80.257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
A 75-year-old woman was admitted with fever of unknown origin and liver damage, and treated with prednisolone. Hypercalcemia appeared when of the dose of prednisolone was reduced, and human T-cell lymphotropic virus type-I (HTLV-I) proviral DNA was detected in the leukemic cells by Southern blot analysis, and a diagnosis of acute adult T-cell lymphoma (ATL) was made. After chemotherapy with sobuzoxane was started, she went into septic shock caused by multiple resistant Serratia marcesense, and was treated with PMX-DHP and antibiotics. Although ner general condition and her serum cytokine leyels improved, the septic shock became more severe, and the patient died. Serratia marcesense expreses lipopolysaccharide (LPS), a biologically active substance that is present in gram-negative bacteria. Exposure to LPS leads to activation of cytokines, including TNF-alpha, IL-1beta, IL-6, and IFN-gamma. After treatment with PMX-DHP, the patient's general condition improved, but she died of septic shock. Bacterial infection may be a life-threatening complication in the immunocompromised hosts and elderly patients, particularly when granulocytopenia has been induced by chemotherapy, and thus such these patients require careful management.
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147
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Oka S, Yokote T, Hara S, Akioka T, Kobayashi K, Hirata Y, Yamano T, Endo Y, Tsuji M, Hanafusa T. Effective treatment of a case of refractory mycosis fungoides with imatinib. Br J Haematol 2006; 133:353. [PMID: 16643439 DOI: 10.1111/j.1365-2141.2006.06046.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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148
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Oka S, Yokote T, Akioka T, Hara S, Yamano T, Tsuji M, Hanafusa T. Successful treatment of multi-agent chemotherapy with rituximab for IgM plasma cell leukemia. Leuk Res 2006; 30:1581-3. [PMID: 16540168 DOI: 10.1016/j.leukres.2006.02.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2006] [Revised: 02/01/2006] [Accepted: 02/01/2006] [Indexed: 11/26/2022]
Abstract
A 67-year-old woman presented with impaired general performance, suffering from fatigue, dyspnea on exertion, and paresthesia of the finger tips. The laboratory findings showed increased white blood cells at 11.37 x 10(3)cells/microl with 26.5% abnormal cells, low haemoglobin and, elevated creatinine, although serum lactate dehydrogenase and calcium levels were normal. Serum immunofixation was positive for monoclonal IgM-kappa paraprotein. Total serum protein and the IgM component were elevated. X-ray examination of the skeleton was normal. Bone marrow aspiration showed 59.5% infiltration of abnormal cells that were characterized by typical mature plasmacytoid morphology. Abnormal cells expressed surface CD20, surface CD138, and cytoplasmic IgM, but not surface CD56 nor surface IgM by flow cytometric immunophenotyping with CD38 gating. Immunohistochemistry showed surface CD38, surface CD20, and cytoplasmic IgM. The clinical findings led to the diagnosis of the IgM Plasma cell leukemia (PCL). The patient received multi-agent chemotherapy (VAD and EDAP with rituximab). The clinical symptoms disappeared, leading to the tumor load reduction. To the best of our knowledge, this is the first report of successful treatment of multi-agent chemotherapy with rituximab for IgM PCL.
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149
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Hara S, Yokote T, Oka S, Akioka T, Kobayashi K, Tsuji M, Hanafusa T. Bronchial infiltration with diffuse large B-cell lymphoma. Leuk Res 2006; 30:1319-22. [PMID: 16533528 DOI: 10.1016/j.leukres.2006.02.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2005] [Revised: 12/17/2005] [Accepted: 02/07/2006] [Indexed: 11/28/2022]
Abstract
Non-Hodgkin's lymphoma (NHL) refers to a heterogeneous group of lymphoproliferative diseases with a diversity of clinical courses, including involvement in another organs. NHL frequently involves the thoracic structures, and particularly the mediastinum and lung parenchyma. Several clinical reports have described bronchial-associated lymphoid tissue (BALT) lymphoma as an endobronchial lesion, but endobronchial infiltration with diffuse large B-cell lymphoma is extremely rare. Here, we provide the first report of this condition confirmed by a histopathological study and the presence of an immunoglobulin heavy chain (IgH) gene rearrangement detected by a polymerase chain reaction (PCR).
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150
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Taguchi-Shiobara F, Yamamoto T, Yano M, Oka S. Mapping QTLs that control the performance of rice tissue culture and evaluation of derived near-isogenic lines. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2006; 112:968-76. [PMID: 16418858 DOI: 10.1007/s00122-005-0200-3] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2005] [Accepted: 12/14/2005] [Indexed: 05/06/2023]
Abstract
Quantitative trait loci (QTLs) that control the performance of tissue culture in rice were detected by using 116 RFLP markers and 183 BC1F3 lines derived from two varieties, Koshihikari and Kasalath. With time, the seed callus of Koshihikari tends to turn brown and stop growing, while that of Kasalath remains yellowish-white and proliferates continuously. The performance of tissue culture in the induction of calli from seed, the subculture of induced calli, and shoot regeneration were evaluated by five indices: induced-callus weight, induced-callus color, subcultured-callus volume, subcultured-callus color, and regeneration rate. Through callus induction and subculture, eight putative QTLs (P < 0.001) were located on chromosomes 1, 4, and 9. Among these QTLs, five Kasalath alleles and three Koshihikari alleles improved tissue culture performance. No QTL for regeneration was found. Among all the QTLs, qSv1 explained the largest phenotypic variance, 33%, in subcultured-callus volume. In induced-callus color, two detected QTLs accounted for 36.4% of the total phenotypic variance; this was the highest score among the five indices used to evaluate the performance of tissue culture. Three near-isogenic lines for QTLs, located in two regions on chromosome 1, were developed to evaluate their tissue culture performance. The Kasalath alleles in qSv1 and qSc1-1 improved callus color through callus induction and subculture, and increased the subcultured-callus volume and the fresh weight of regenerated calli, including shoots, roots, and differentiated structures. In qSc1-2, the Kasalath allele improved callus color through induction and subculture. These results verified the presence of QTLs for the volume and color of subcultured callus on chromosome 1, qSv1, qSc1-1, and qSc1-2.
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