Publications by authors named "Nakano N"

Objectives: Treatment decisions for severe aortic stenosis (AS) are complex, since there are two active and comparable options: transcatheter aortic valve implantation and surgical aortic valve replacement. The disease predominantly affects older individuals, who are frequently comorbid with from cognitive impairment. This study aimed to establish a screening-triggered system to assess the decision-making capacity of patients with AS, support their decision-making, and facilitate referrals to specialists when necessary.

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Here, we report a rare case of relapsed adult T-cell leukemia-lymphoma (ATL) with evidence of clonal relapse 26 years after initial diagnosis. The patient had been diagnosed with an aggressive form of lymphoma-type ATL 26 years prior and did not receive further ATL treatment for approximately 26 years after achieving complete remission. We used nested PCR to identify the amplification of ATL clone-specific accumulation sites in DNA from hematoxylin and eosin-stained specimens from the patient.

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Introduction: The purpose of this study was to compare leg length discrepancies (LLD) between simultaneous and staged bilateral total hip arthroplasty (BTHA).

Materials And Methods: This retrospective cohort study included 150 consecutive patients who underwent BTHA (60 simultaneous and 90 staged BTHA). To adjust for preoperative patient characteristics between groups, 1:1 propensity score matching was performed based on age, sex, body mass index, American Society of Anesthesiologists Physical Status, Tönnis classification, Crowe classification, preoperative range of motion (flexion and abduction), LLD, and Harris Hip Score (HHS).

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Mas-related G protein-coupled receptor b2 (Mrgprb2) binding to its cationic endogenous and exogenous ligands induces mast cell degranulation and promotes inflammation in mice. However, the physiological roles of its human homologue MRGPRX2 remain unclear. Here we aimed to elucidate the mechanisms by which MRGPRX2 regulates vascular permeability, and generated MRGPRX2 knock-in (MRGPRX2-KI) and Mrgprb2 knockout (Mrgprb2-KO) mice.

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Here, we investigated the clinical significance of NOTCH1 and FBXW7 alterations for adult T-cell leukemia/lymphoma (ATLL) treatment outcomes. NOTCH1 alterations were identified in 37 (14.4%) of 257 patients, of which 33 were single nucleotide variants/insertion-deletions in the PEST domain, and 7 were in the heterodimerization or LIN-12/Notch repeats domains.

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  • Multidisciplinary self-care education is vital for managing hospitalized heart failure (HF) patients, and the study examines if confidence in self-care during hospitalization impacts post-discharge performance and outcomes.
  • Researchers assessed 100 HF patients' self-care confidence and behaviors during hospitalization and one year post-discharge, using questionnaires and logistic regression analysis to find links between self-care confidence, performance, and long-term health outcomes.
  • Results showed that low self-care confidence during hospitalization led to poor post-discharge self-care performance, particularly affecting patients with reduced ejection fraction and those with previous HF hospitalizations, but overall, post-discharge self-care behavior did not significantly impact 2-year mortality and readmission rates.
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Bovine spongiform encephalopathy (BSE) is a prion disease in cattle caused by classical-type (C-), L-type (L-), or H-type (H-) BSE prions. While C-BSE prions are zoonotic agents responsible for variant Creutzfeldt-Jakob disease, L- and H-BSE prions are believed not to be connected to human prion diseases. However, L-BSE prions have been shown to transmit to cynomolgus monkeys (Macaca fascicularis), suggesting they may have zoonotic potential.

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To investigate the predictive value of the central arterial waveform for intradialytic blood pressure (BP) change, a total of 152 hemodialysis patients (mean age 68 years) on a thrice-weekly hemodialysis schedule were enrolled, and at both the first and second session of the week, BP and central arterial waveform were measured every 30 min during hemodialysis. In both sessions, a 1-standard deviation increase in baseline subendocardial viability ratio (SEVR), an index of subendocardial perfusion, as well as in baseline systolic BP (SBP) was an independent predictor of maximum SBP decrease ≥ 30 mmHg during hemodialysis. When divided into four groups based on the respective median level of SEVR in the SBP ≥ median and SBP < median groups, intradialytic SBP change was different among the subgroups.

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  • KLF15 plays a crucial role in endochondral ossification during fracture healing, which was studied in a mouse model of tibial fractures.
  • Researchers created KLF15 knockout mice to investigate its effects on healing, revealing that KLF15 KO mice had delayed callus formation and reduced expression of key markers like SOX9 and COL2.
  • The study concluded that KLF15 regulates SOX9 through the TGF-β-SMAD3-SOX9 pathway, highlighting its importance in the fracture healing process.
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This study retrospectively compared outcomes of various allogeneic haematopoietic cell transplantation (allo-HCT) platforms in patients with adult T-cell leukaemia/lymphoma. Platforms included human leukocyte antigen (HLA)-haploidentical-related donors using post-transplant cyclophosphamide (PTCY), HLA-matched related donors (MRD), HLA-matched unrelated donors (MUD) and cord blood transplantation (CBT). Patients who underwent their first allo-HCT between 2016 and 2021 were included.

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  • Allogeneic hematopoietic stem cell transplantation (allo-HSCT) can lead to long-lasting remission in adult T-cell leukemia/lymphoma (ATL) patients, but there's a lack of research on post-transplant outcomes for younger patients (≤49 years).
  • A study found that patients aged <40 years had a significantly better overall survival rate (61.8%) compared to those aged 40-49 years (43.1%), indicating younger patients fare better post-transplant.
  • Moreover, while there were no major differences in survival outcomes between different conditioning regimens, the reduced-intensity conditioning (RIC) regimen resulted in lower non-relapse mortality compared to the myeloablative conditioning (MAC) regimen
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  • Many patients undergo periacetabular osteotomy (PAO) for hip issues and returning to work post-surgery is crucial for their livelihoods, yet there's little data on work productivity afterward.
  • The study analyzed 68 hip joints from 48 participants to determine how clinical factors and workload influenced post-PAO work productivity using various assessment tools.
  • Results showed that 98% of participants returned to work, with significant productivity improvement and a connection between preoperative osteoarthritis and workload on post-surgery outcomes.
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Background: The number of patients with heart failure (HF) is rapidly increasing as palliative care is being integrated into HF management and the need for a nursing workforce to meet these demands grows. To address this, we have developed a Web-based educational program on primary palliative care for HF among general registered nurses caring for patients with HF in Japan.

Objective: The aim of this study was to evaluate the program's effectiveness on nurse-reported palliative care practice, difficulty, and knowledge.

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  • The study investigates the therapeutic effects of adipose-derived stromal vascular fraction (SVF) on osteoarthritis (OA) using a rat model to uncover underlying mechanisms.
  • The results indicate that SVF transplantation led to slower OA progression and reduced inflammation compared to control groups, with changes in key proteins and cell types observed.
  • In vitro experiments showed that SVF components, particularly M2 macrophages, promote chondrocyte growth and inflammatory cytokine balance, suggesting their importance in treating OA.*
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  • Bone morphogenetic proteins (BMPs) play a key role in the development and differentiation of bone and cartilage, particularly through their interactions with specific receptors on cells.
  • In mouse chondrocyte precursor cells (ATDC5), the protein MSK1 is rapidly activated by BMP-6 stimulation, influencing the differentiation processes when either overexpressed or suppressed.
  • The study highlights the involvement of both p38 kinase pathways and Smad proteins in BMP-6-induced chondrocyte differentiation, indicating that MSK1 activation is essential for these processes.
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This study aimed to investigate the recovery of physical function, muscle mass, and quality of life (QOL) in allogeneic hematopoietic stem cell transplantation (allo-HSCT) patients 1 year after the procedure. A total of 71 patients who underwent allo-HSCT at our institution between February 2010 and June 2020, for whom a physical therapy assessment could be performed before allo-HSCT, at discharge, and 1 year after the procedure, were included. Exercise therapy during hospitalization was provided individually by a physical therapist, and exercise was self-administered after discharge.

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Objective: This study aimed to analyze the clinical efficacy of JAK inhibitors in difficult-to-treat rheumatoid arthritis (D2TRA) and non-D2TRA patients and evaluate the factors influencing their efficacy using real-world data.

Method: Here, 159 JAK inhibitor-treated patients with rheumatoid arthritis were categorized into D2TRA and non-D2TRA groups. Data including the Clinical Disease Activity Index (CDAI) at initiation and 6 months after drug administration, drug retention months, and reason for discontinuation due to toxic adverse events were collected.

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Introduction: This study aimed to evaluate differences in the pattern of fixation with a rectangular tapered short stem (Fitmore stem) due to proximal femoral medullary cavity morphology based on periprosthetic bone mineral density (BMD) and radiological findings.

Materials And Methods: We analyzed 105 consecutive patients (Dorr type A, 18; Dorr type B, 66; Dorr type C, 21) who underwent total hip arthroplasty using a Fitmore stem. Periprosthetic BMD was measured using dual-energy X-ray absorptiometry from 1 to 24 months postoperatively and radiological analysis was performed.

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Background: Myxofibrosarcoma is a myxoid soft tissue sarcoma showing T2 high intensity on magnetic resonance imaging. However, myxofibrosarcoma is a heterogeneous sarcoma with both myxoid and cellular portions. Magnetic resonance imaging findings were obtained MRI findings for comparison with histological and Ki-67 immunohistochemical features, in different portions of one myxofibrosarcoma.

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Objectives: This study aimed to understand the status quo of medical treatments of the primary disease and pregnancy outcomes in patients with Takayasu arteritis (TAK) and children's birth outcomes.

Methods: This study retrospectively enrolled patients with TAK who conceived after the disease onset and were managed at medical facilities participating in the Japan Research Committee of the Ministry of Health, Labor, and Welfare for Intractable Vasculitis.

Results: This study enrolled 51 cases and 68 pregnancies 2019-2021.

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  • Two cases of women with Charcot-Marie-Tooth disease (CMT) experiencing problems with their knees due to Charcot joints were treated with rotating hinge knee (RHK) arthroplasty.
  • The first case involved a 74-year-old who had significant knee instability but was able to stand unassisted without pain five years after the surgery.
  • The second case involved a 90-year-old woman who also showed improvement, as she was able to walk smoothly with a walker one year post-surgery, indicating RHK arthroplasty's effectiveness for this condition in patients with CMT.
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  • The study investigated how intraoperative lateral laxity at extension affects outcomes one year after posterior-stabilized total knee arthroplasty (PS-TKA) in patients with varus-type osteoarthritis.
  • A total of 91 knees were assessed for lateral laxity and categorized into three groups based on the degree of laxity, and outcomes were measured using the 2011 Knee Society Score and a timed up-and-go test one year post-surgery.
  • Results showed that more than 4° of lateral laxity was linked to less functional improvement post-surgery, indicating that avoiding excessive laxity during the procedure is important for better patient outcomes.
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  • Postoperative osteoarthritis (OA) progression is a key factor affecting the success of curved periacetabular osteotomy (CPO), and the study aims to link anatomical parameters and the combination angle to OA progression.
  • A study involving 90 hips revealed that preoperative OA, low acetabular anteversion, and a large combination angle significantly correlate with OA progression after surgery.
  • The findings suggest that surgeons should consider preoperative OA levels, acetabular positioning post-surgery, and the combination angle when evaluating patient outcomes after CPO.
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Background: Both kinematically-aligned (KA) total knee arthroplasty (TKA) and bicruciate stabilized (BCS) TKA aim to reproduce the physiological knee kinematics. In this study, we compared the femoro-tibial component rotational mismatch between patients who underwent modified KA-TKA and those who received guided-motion BCS-TKA, and its influence on the clinical outcomes.

Methods: In this retrospective study, 77 consecutive patients were included and divided into two groups: subjects who underwent modified KA-TKA with Persona (KA Group; n = 42) and those who received BCS-TKA with JOURNEY II (BCS group; n = 35).

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Dormancy is an essential ecological characteristic for the survival of organisms that experience harsh environments. Although factors that initiate dormancy vary, suppression or cessation of feeding activities are common among taxa. To distinguish between extrinsic and intrinsic causes of metabolic reduction, we focused on estivation, which occurs in summer when the feeding activity is generally enhanced.

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