Publications by authors named "Kawamata N"

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  • * Imaging tests revealed multiple brain and lung nodules, and blood tests indicated symptoms consistent with hemophagocytic syndrome.
  • * A bone marrow examination confirmed the presence of Toxoplasma gondii, leading to treatment; however, the patient ultimately developed multiple organ failure and died shortly after admission.
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  • Most follicular lymphomas (FLs) are typically slow-progressing with good outcomes, but some patients face disease worsening within 24 months (POD24), leading to poorer results.
  • This study aimed to identify predictive risk factors for POD24 and analyze the microenvironment characteristics in FL patients experiencing POD24.
  • The research found that higher Ki-67 expression significantly correlates with POD24 events, and those patients also showed a decrease in certain immune cells, suggesting implications for targeted treatment approaches.
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  • The MANTIS Clip is a new medical device designed to improve tissue grasping and close defects in the gastrointestinal tract, specifically after colorectal endoscopic submucosal dissection (C-ESD).
  • A study at a single center from May 2023 to April 2024 involved 52 patients, showing a very high complete closure success rate of 98.1% and a sustained closure rate of 96.1% for mucosal defects.
  • The procedure had minimal complications, with only one instance each of bleeding and coagulation syndrome, indicating the MANTIS Clip's effectiveness and practicality, but further multicenter trials are recommended for more comprehensive evaluation.
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  • This study compares two chemotherapy regimens used in patients undergoing umbilical cord blood transplantation: Flu/Mel/Bu2 (lower busulfan dose) and Flu/Mel/Bu4 (higher busulfan dose).
  • Researchers analyzed data from 87 adult patients to see if there were differences in nonrelapse mortality, relapse rates, progression-free survival, and overall survival between the two regimens.
  • The results showed no significant differences in outcomes, suggesting that the Flu/Mel/Bu2 regimen is a safe and effective option, particularly for older patients.
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Background: The limit of stability (LoS), an index of stance balance ability, is reduced in older adults. Although contacting an earth-fixed external surface through fingertips' light touch improves older adults' stance balance control, its effects on the LoS in this population are unclear.

Research Question: Does light touch increase the LoS and reduce postural sway in the LoS?

Methods: This study included 20 young adults (11 women and 9 men, mean age = 20.

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  • Diffuse large B-cell lymphoma (DLBCL) shows varied clinical and genetic characteristics, but differences between primary extranodal and nodal DLBCL, especially involving double-expressor lymphoma (DEL), remain unclear.
  • The study analyzed 61 primary extranodal and 128 nodal DLBCL cases, finding that nodal DLBCL had higher BCL2 expression, while DEL was linked to poor outcomes in extranodal cases.
  • Results indicated that DEL significantly impacted progression-free and overall survival in primary extranodal DLBCL patients, establishing it as a crucial adverse prognostic factor.
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  • The endoscopic pressure study integrated system (EPSIS) is a new tool that measures lower esophageal sphincter (LES) function by recording intragastric pressure during esophagogastroduodenoscopy (EGD), aimed at helping diagnose achalasia.
  • A case-control study involved 35 achalasia patients and 34 control patients, comparing EPSIS findings like pressure waveform patterns and maximum intragastric pressure (IGP-Max) between the two groups.
  • Results showed that all achalasia patients had an uphill pressure pattern, with IGP-Max providing high diagnostic accuracy (100% sensitivity, 58.8% specificity) at a cut-off of 15.8 mmHg, indicating EPS
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Objectives: Lupus cystitis is a rare but serious complication of systemic lupus erythematosus (SLE) that can cause permanent bladder dysfunction, leading to irreversible deterioration of kidney function. We report two cases of SLE with lupus cystitis who showed different images from the same cause of disease.

Methods: Patient 1, a 67-year-old woman diagnosed with SLE presented with persistent dysuria for 3 weeks with sudden headache and vomiting.

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  • 18 F-FDG PET/CT is becoming more popular for diagnosing systemic vasculitis, particularly large-vessel types.
  • A case study of an 84-year-old man with giant cell arteritis showed significant large-vessel lesions in his extremities but not in the trunk area.
  • This example illustrates how PET/CT can effectively identify localized inflammation in vasculitis cases.
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Anti‑CD19 chimeric antigen receptor (CAR)‑T cell therapy against refractory B‑cell malignancies shows excellent therapeutic effects. However, there are some obstacles to be overcome in this treatment. Since current CAR‑T cells target a single cell‑surface protein on tumor cells, the CAR‑T cells also attack normal cells expressing the protein.

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Ruxolitinib (RUX), a JAK1/2-inhibitor, is effective for myeloproliferative neoplasm (MPN) with both JAK2V617 F and calreticulin (CALR) mutations. However, many MPN patients develop resistance to RUX. Although mechanisms of RUX-resistance in cells with JAK2V617 F have already been characterized, those in cells with CALR mutations remain to be elucidated.

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Although the indications for allogeneic hematopoietic stem cell transplantation (allo-HSCT) as a treatment for T-cell acute lymphoblastic leukemia/lymphoma (T-ALL/LBL) and Philadelphia chromosome (Ph)-negative B-cell acute lymphoblastic leukemia (B-ALL) are similar, few studies have compared its outcomes for T-ALL/LBL and Ph-negative B-ALL. The clinical data of 28 patients with T-ALL, 16 with T-LBL, and 99 with Ph-negative B-ALL who underwent the first allo-HSCT from 2000 to 2019 were retrospectively analyzed. Complete remission (CR) rates at allo-HSCT were 79 %, 63 %, and 75 % for T-ALL, T-LBL, and B-ALL, respectively; the 3-year overall survival (OS) rates were 55.

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  • Recent research identified specific human monocyte-restricted progenitors that express high levels of CD64 and developed an anti-CD64 antibody conjugated with dimeric pyrrolobenzodiazepine (dPBD) to selectively kill these proliferating progenitors without affecting mature monocytes or other blood cells.
  • The treatment with anti-CD64-dPBD not only eliminated proliferating monocytic leukemia cells effectively but also reduced tumor-associated macrophages, significantly shrinking tumor sizes in humanized mice, indicating
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BCR-ABL1 International Scale (IS) measurement is an important technique used to monitor chronic myeloid leukemia (CML) when patients are treated with tyrosine kinase inhibitors. In very rare cases, the BCR-ABL1 IS measurement fails to detect BCR-ABL1 chimeric messages for unknown reasons. Such a situation was also experienced in our study; therefore, molecular analysis of BCR-ABL1 fusion gene was performed.

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Standard treatment for acute myeloid leukemia (AML) comprises (1) induction therapy with both cytarabine and anthracycline and (2) consolidation therapy that is modified according to patients' conditions, including prognostic factors. However, this strategy is not satisfactory, especially for elderly patients. Novel technologies have revealed several driver mutations of numerous critical genes in AML, which can be targeted by novel drugs; the discovery of such targetable genes and the development of novel drugs have evolved the treatment strategy for AML.

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A 54-year-old female complained of oral erosion. A flaccid blister appeared on the trunk 2 months after the onset. The high titer of the anti-desmoglein 1 antibody in the absence of Nikolsky's sign led to the diagnosis of pemphigus vulgaris.

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Osteosarcoma (OS) has a high degree of chromosomal instability and total copy number (CN) changes. We examined 58 human OS samples including 40 primary tumors, 11 explants, and 7 cell lines using single nucleotide polymorphism (SNP) arrays, and revealed that 70% of the samples had one or more recurrent CN-neutral loss of heterozygosity (CNN‑LOH) also known as uniparental disomy (UPD). Importantly, 17% of the samples showed prominent homozygous deletion of 3q13.

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Current standard of care for patients with pediatric acute lymphoblastic leukemia (ALL) is mainly effective, with high remission rates after treatment. However, the genetic perturbations that give rise to this disease remain largely undefined, limiting the ability to address resistant tumors or develop less toxic targeted therapies. Here, we report the use of next-generation sequencing to interrogate the genetic and pathogenic mechanisms of 240 pediatric ALL cases with their matched remission samples.

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Posttranslational modifications (PTMs) of proteins play a crucial role in regulating protein-protein interactions, enzyme activity, subcellular localization, and stability of the protein. SET domain, bifurcated 1 (SETDB1) is a histone methyltransferase that regulates the methylation of histone H3 on lysine 9 (H3K9), gene silencing, and transcriptional repression. The C-terminal region of SETDB1 is a key site for PTMs, and is essential for its enzyme activity in mammalian and insect cells.

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SET domain, bifurcated 1 (SETDB1) is a histone methyltransferase that methylates lysine 9 on histone H3. Although it is important to know the localization of proteins to elucidate their physiological function, little is known of the subcellular localization of human SETDB1. In the present study, to investigate the subcellular localization of hSETDB1, we established a human cell line constitutively expressing enhanced green fluorescent protein fused to hSETDB1.

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The use of genome-wide copy-number analysis and massive parallel sequencing has revolutionized the understanding of the clonal architecture of pediatric acute lymphoblastic leukemia (ALL) by demonstrating that this disease is composed of highly variable clonal ancestries following the rules of Darwinian selection. The current study aimed to analyze the molecular composition of childhood ALL biopsies and patient-derived xenografts with particular emphasis on mechanisms associated with acquired chemoresistance. Genomic DNA from seven primary pediatric ALL patient samples, 29 serially passaged xenografts, and six in vivo selected chemoresistant xenografts were analyzed with 250K single-nucleotide polymorphism arrays.

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Chronic lymphocytic leukemia (CLL) is a common hematological malignancy in Western countries. However, this disease is very rare in Asian countries. It is not clear whether the mechanisms of development of CLL in Caucasians and Asians are the same.

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Background: SOX7 is a transcription factor belonging to the SOX family. Its role in lung cancer is unknown.

Methods: In this study, whole genomic copy number analysis was performed on a series of non-small cell lung cancer (NSCLC) cell lines and samples from individuals with epidermal growth factor receptor (EGFR) mutations using a SNP-Chip platform.

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