Publications by authors named "Takayuki SAITOH"

Article Synopsis
  • Researchers explored the connection between DNA repair gene polymorphisms, specifically in base excision repair (BER) genes, and the risk of developing acute myeloid leukemia (AML).
  • A significant association was found between the APEX1-656 T>G polymorphism and AML risk, with elevated expression of APEX1 observed in AML patients compared to healthy controls.
  • The study concluded that APEX1 polymorphisms may be a risk factor for AML and emphasized APEX1's role in controlling AML cell differentiation and growth.
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This study aimed to assess the diagnosis of diabetes after detecting high blood glucose levels through screening among insured individuals in Gunma, Japan. Data for men and women 35 to 74 years of age were provided by Japan Health Insurance Association, and 4133 individuals with high blood glucose levels while not currently being treated for diabetes were included in the study. About 13% received a diagnosis of diabetes at a subsequent physician visit, and individuals who were under treatment for hypertension were less likely to receive the added diagnosis of diabetes compared with those not being treated for hypertension (odds ratio = 0.

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A prospective multicenter observational study of organ response was conducted in patients with chronic GVHD diagnosed by the NIH criteria. When response was assessed at 12 months (12 M) in 118 patients, 74.6% were classified as responders and 25.

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The formation process of intermediate-mass black holes (IMBHs), defined as those between 100 and 10 solar masses (), is debated. One potential origin is the growth of less-massive black holes merging with stars and compact objects within globular clusters (GCs). However, previous simulations have indicated that this process only produces IMBHs under 500 before gravitational wave recoil ejects them from the GC.

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Introduction: Waldenström macroglobulinemia (WM) represents a subset of lymphoplasmacytic lymphoma (LPL) with the immunoglobulin (Ig)M paraprotein. MYD88 L265P and CXCR4 mutations are common mutations in WM patients, and mutations in ARID1A and KMT2D (MLL2) have also been reported. However, little information has been accumulated on genetic changes in LPL with other paraproteins like IgG.

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Cellular senescence is a stable cell cycle arrest, usually in response to internal and/or external stress, including telomere dysfunction, abnormal cellular growth, and DNA damage. Several chemotherapeutic drugs, such as melphalan (MEL) and doxorubicin (DXR), induce cellular senescence in cancer cells. However, it is not clear whether these drugs induce senescence in immune cells.

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Tissue inhibitors of metalloproteinases (TIMPs) are endogenous matrix metalloproteinase inhibitors. TIMP1 is produced by cancer cells and has pleiotropic activities. However, its role and source in multiple myeloma (MM) are unclear.

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MicroRNAs (miRNAs and miRs) are small (19-25 base pairs) non-coding RNAs with the ability to modulate gene expression. Previously, we showed that the miR-34 family is downregulated in multiple myeloma (MM) as the cancer progressed. In this study, we aimed to clarify the mechanism of miRNA dysregulation in MM.

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Cellular senescence is linked to a wide range of age-related diseases and can be triggered by a variety of stresses, including DNA damage. A variety of genotoxic stressors, such as anti-cancer drugs, cause DNA double-strand breaks (DSBs), which trigger the accumulation of the tumour suppressor protein p53 in the nucleus. Cellular stresses stabilize and activate the p53 signalling pathway, which regulates various cellular processes, such as apoptosis, DNA repair, and senescence.

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Human endogenous retroviruses (HERVs) are retrotransposons that infect human germline cells and occupy 5-8% of the human genome. Their expression, though inhibited by mutation, deletion, and epigenetic mechanisms under normal conditions, is associated with diseases including cancer. This study aimed to clarify the association between HERVs and multiple myeloma (MM) progression.

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Background: Maintenance ± consolidation or continuous therapy is considered a standard of care for both transplant-eligible and -ineligible patients with multiple myeloma (MM). However, long-term benefits of such therapy have not yet been clarified in the context of clinical practice.

Purpose: To clarify the efficacy of maintenance/continuous approach, we retrospectively analyzed the cohort data of newly diagnosed MM patients by propensity-score matching based on age, gender, revised International Staging System (R-ISS) stage, and implementation of transplantation to reduce the bias due to confounding variables.

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Single-nucleotide polymorphisms (SNPs) of the IDO1 and IDO2 genes have been associated with some diseases. Here, we investigated the association of IDO1 and IDO2 SNPs with the susceptibility to multiple myeloma (MM) and their relationships with MM clinical features. We obtained genomic DNA from 100 patients with MM and 149 healthy race-matched controls and determined IDO1 promoter - 1849G/T (rs3824259) and IDO2 R248W (rs10109853) genotypes by using the polymerase chain reaction-restriction fragment length polymorphism method.

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Major histocompatibility complex class II (MHC II) is important for the adaptive immune response because MHC II presents processed antigens to a cluster of differentiation 4 (CD4)-positive T-cells. Conventional doses of chemotherapeutic agents induce tumor cell death by causing DNA double-strand breaks (DSBs). However, cellular responses caused by sub-lethal doses of chemotherapeutic agents are poorly understood.

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Additional cytogenetic abnormality (ACA) acquisition at relapse has been recognized as clonal evolution at the cytogenetic level, and has a significant prognostic impact on relapsed acute myeloid leukemia (AML) patients. We retrospectively investigated 48 relapsed Philadelphia chromosome (Ph)-negative acute lymphoblastic leukemia (ALL) patients to clarify the clinical significance of ACA acquisition at the first relapse. Twenty-seven patients (56 %) acquired ACA at the first relapse.

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Multiple myeloma (MM) is an incurable plasma cell malignancy characterized by genomic instability. MM cells present various forms of genetic instability, including chromosomal instability, microsatellite instability, and base-pair alterations, as well as changes in chromosome number. The tumor microenvironment and an abnormal DNA repair function affect genetic instability in this disease.

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Long noncoding RNAs (lncRNAs) are deregulated in human cancers and are associated with disease progression. (, a lncRNA, is located adjacent to the gene , which has been linked to multiple myeloma (MM). is expressed in MM and is associated with carcinogenesis.

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Acute myeloid leukemia (AML) with granulocytic sarcoma (GS) is characterized by poor prognosis; however, its underlying mechanism is unclear. Bone marrow samples from 64 AML patients (9 with GS and 55 without GS) together with AML cell lines PL21, THP1, HL60, Kasumi-1, and KG-1 were used to elucidate the pathology of AML with GS. RNA-Seq analyses were performed on samples from seven AML patients with or without GS.

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Objective: Myelodysplastic syndromes (MDS), caused by various genetic mutations in hematopoietic stem cells, are associated with highly variable outcomes. Poly (ADP-ribose) polymerase-1 (PARP1) plays an important role in DNA damage repair and contributes to the progression of several types of cancer. Here, we investigated the impact of PARP1 V762A polymorphism on the susceptibility to and prognosis of MDS.

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A 69-year-old man with palpitations and decreased blood pressure was referred. Echocardiography showed a mass in the right atrium and cardiac septum. The serum IgG4 level was 1,450 mg/dL.

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Article Synopsis
  • SNPs in the PDCD1, PDCD1LG1, and CTLA4 genes are linked to cancer development, particularly multiple myeloma (MM).
  • The study analyzed genomic DNA from 124 MM patients and 211 healthy controls, finding a higher frequency of PDCD1 haplotypes in patients compared to controls.
  • Specific PDCD1 and PDCD1LG1 SNPs influenced clinical features, such as bone lesions and treatment response, while CTLA4 polymorphisms did not show significant impact on clinical variables or overall survival.
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A 32-year-old woman was diagnosed with autoimmune hemolytic anemia (AIHA) at 12 weeks of a pregnancy examination and followed up closely without treatment. At 40 weeks of gestation, she underwent emergency caesarean section because of premature rupture. On postoperative day one, the patient exhibited worsening hemolysis and tachycardia and developed high-output heart failure; she was diagnosed with Basedow disease based on the tachycardia pattern and thyroid storm based on the presence of hyperthyroidism, fever, tachycardia, and heart failure.

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Lao People's Democratic Republic (Lao PDR) with a population of 6.8 million is a low middle-income country in Southeast Asia. Despite economic development, Lao PDR is still characterized by a weak health system.

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Renal impairment (RI) is a common complication of multiple myeloma (MM) that significantly affects treatment efficacy and mortality. However, no useful biomarkers for early detection of renal damage in MM exist. Reports indicate that activin A, a multifunctional cytokine of the TGF-β superfamily, is involved in the development and progression of various kidney diseases.

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