Publications by authors named "Ryoko Sawada"

Granulocyte-colony stimulating factor (G-CSF) is commonly used to reduce neutropenia-related complications following chemotherapy. It is a glycoprotein that stimulates the production of granulocytes [white blood cells (WBCs) in the bone marrow. In the present study, the case of a 59-year-old man is presented who received chemotherapy (eribulin) for liver metastases from sacral chordoma and subsequently developed acute aortitis after the administration of G-CSF.

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Evidence regarding the effectiveness of rehabilitation treatments in patients with bone metastases remains limited. This study evaluated the implementation and effectiveness of rehabilitation in patients with bone metastases who did not undergo surgery. This retrospective study included 200 patients with nonsurgically treated bone metastases at our institution.

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Background: Patients with clear cell renal cell carcinoma (ccRCC) have a higher incidence of bone metastasis; however, the availability of immune checkpoint inhibitors (ICIs) is expected to improve their overall survival (OS). Hence, accurate data on the prognosis and survival of patients with bone metastases are necessary to recommend appropriate treatments. Therefore, we investigated the prognosis and prognostic factors of patients with ccRCC bone metastasis in the era of ICIs.

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Anti-cytomegalovirus (CMV) serological testing, including the IgG avidity index (AI), is used to assess CMV infection phases during pregnancy. However, little is known about anti-CMV cellular immunity during pregnancy, particularly its relation to serological diagnosis. Herein, using MHC-dextramer single-cell RNA sequencing and flow cytometry, we characterized IE1 and pp65 CMV-antigen specific CD8 T cells from pregnant women with different anti-CMV serological patterns, including IgGIgM/AI-low, IgGIgM/AI-high, and IgGIgM.

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Background: Accurate data on the prognosis of bone metastases are necessary for appropriate treatment. Immune checkpoint inhibitors (ICIs) are widely used in the treatment of gene mutation-negative non-small cell lung cancer (GMN-NSCLC).

Aim: To investigate the prognostic factors in patients with bone metastases from GMN-NSCLC following ICI use.

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Cancer stem cells (CSCs) have been implicated as critical mediators in the progression, chemoresistance and metastatic capabilities of diverse malignancies, including osteosarcoma (OS). The authors have succeeded in generating CSC‑like cells (MG‑OKS) from the OS cell line MG‑63 by transducing defined factors. A significant increase in small proline‑rich protein 1A (SPRR1A) expression, a cross‑linked envelope protein in keratinocytes, was observed in MG‑OKS cells.

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Article Synopsis
  • - A multidisciplinary approach using Bone Metastasis Cancer Boards (BMCBs) has been utilized since 2013 to manage patients at risk of skeletal-related events (SREs), focusing on teamwork for the best treatment outcomes.
  • - A pregnant 41-year-old woman with breast cancer and multiple bone metastases received coordinated care through a BMCB, which led to a successful cesarean section and subsequent rehabilitation therapy.
  • - The BMCB not only addressed the patient’s immediate treatment needs but also helped improve her daily activities and overall well-being, highlighting the potential of BMCBs in preventing SREs and enhancing rehabilitation for similar patients.
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  • A multicenter study in Japan compared clinical outcomes for patients with pelvic bone sarcomas treated with surgery versus particle beam therapy (carbon-ion and proton).
  • The study included 116 patients, with 57 receiving surgery and 59 undergoing particle beam therapy, revealing differences in median age at diagnosis and tumor size between the groups.
  • Overall survival, local control, and metastasis-free survival rates were similar between the groups, but in chordoma patients, the particle beam therapy showed significantly better local control rates compared to surgery.
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: Changes in activities of daily living (ADL) and quality of life (QOL) of patients with bone metastasis who underwent surgical treatment through Bone Metastasis Cancer Boards (BMCBs), a recent multidisciplinary approach for managing bone metastases, have been reported; however, no reports exist on patients who undergo conservative treatment. In this study, we aimed to evaluate these patients' ADL and QOL and examine the factors influencing changes in these parameters. : We retrospectively reviewed 200 patients with bone metastases who underwent conservative therapy through BMCBs between 2013 and 2021.

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  • Patients with bone metastases face challenges in maintaining employment during cancer treatment, affecting their quality of life.
  • A study revealed that only 36.3% of patients were still employed after diagnosis, with specific factors like job type and location of metastases impacting their ability to work.
  • The findings highlight the need for better support from healthcare and workplace communities to help these patients stay in their jobs despite mobility challenges.
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Background: Even terminal cancer patients desire to walk to the toilet by themselves until the very last day. This study aimed to describe the walking ability of patients with spinal metastases at the end-of-life stage and identify the factors affecting this ability.

Methods: Among 527 patients who first visited our multidisciplinary team for bone metastasis between 2013 and 2016, 56 patients who had spinal metastases with a Spinal Instability Neoplastic Score ≥7 and died during follow-up were included.

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  • The introduction of tyrosine kinase inhibitors has significantly improved survival rates for patients with metastatic renal cell carcinoma (RCC), leading to an increased need for surgical intervention in cases of bone metastases.
  • A retrospective study analyzed 26 surgeries from 17 patients with bone metastases in the extremities, researching outcomes like daily living activities, quality of life, and pain following targeted therapy.
  • Results showed good postoperative outcomes with 5-year overall survival and local progression-free survival rates of 39.5% and 65.6%, respectively, suggesting that systemic treatment should take precedence over local control for advanced RCC bone metastases.
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  • * Recent research indicates that slow-cycling cells (SCCs) may significantly contribute to tumor growth, chemoresistance, and the likelihood of recurrence in ES.
  • * This study successfully used a CFSE labeling system to identify and analyze SCCs in ES, finding unique properties and gene expressions that could lead to better understanding and treatment targets for the disease.
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Background: Eribulin is a tubulin and microtubule-targeting drug that has clinical benefit in overall survival (OS) for patients with advanced soft tissue sarcoma. Eribulin's efficacy has been confirmed in several clinical trials, although no clinically useful biomarkers have been identified. We therefore sought to clarify the predictive factor of eribulin treatment, while focusing on systemic inflammation and immune response values.

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Background: Surgical procedure for symptomatic spinal metastasis is expected to improve the quality of life. Factors related to short-term perioperative mortality after surgery for spinal metastasis may be different from those related to long-term mortality, which have classically been used to determine the indication for surgery. The purposes of this study were to evaluate factors related to the 30-day mortality after surgery for spinal metastasis and create an integer risk scoring system.

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Lower limb pathological fractures caused by bone metastases can severely impair activities of daily living, so recognizing fracture risk is essential. Medial cortical involvement (MCI) in the proximal femur has been demonstrated to affect bone strength in biomechanical studies, but it has not been investigated in real patients. Between 2012 and 2019, 161 bone metastases with computed tomography (CT) images were retrospectively examined.

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Background: Soft tissue metastasis is rarer than bone metastasis. Patients with soft tissue metastasis generally have a dismal prognosis. The treatment for metastatic lesions is sometimes difficult, because the prognostic factors of patients with soft tissue metastasis remain unelucidated.

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Objective: In contrast to acrometastasis, defined as bone metastasis to the hand or foot, the frequency and prognosis of bone metastasis of other limb segments remain unclear. To compare prognosis according to sites of bone metastasis, we defined two new terms in this study: 'mesometastasis' and 'rhizometastasis' as bone metastasis of 'forearm or lower leg' and 'arm or thigh', respectively.

Methods: A total of 539 patients who were registered to the bone metastasis database of The University of Tokyo Hospital from April 2012 to May 2016 were retrospectively surveyed.

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Fibrodysplasia ossificans progressiva (FOP) is a rare genetic skeletal disorder manifesting progressive heterotopic ossification (HO) and congenital malformation of the great toes. Since 2007, we have conducted research on FOP. Here, we review the findings on FOP published to date, including the results of our research.

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Background: It is important to assess the fracture risk associated with metastasis in the proximal femur. The study aimed to clarify the effect of tumor location on the risk of pathological fracture of the proximal femur and investigate the fracture risk not only in the stance-loading configuration (SC), but also in the fall-loading configuration (FC) using a computed tomography (CT)-based finite element (FE) method based on a simulated metastatic model.

Methods: The axial CT scans of the proximal femora of non-osteoporotic healthy men (n = 4; age range, 42-48 years) and osteoporotic post-menopausal women (n = 4; age range, 69-78 years) were obtained with a calibration phantom, from which the three-dimensional FE models were constructed.

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  • The study investigates the quality of life (QOL) of patients with bone metastases across various cancer types and treatment statuses, emphasizing the importance of patients' perspectives.
  • It involved 174 patients who completed self-report questionnaires, revealing that their mean EQ-5D score was significantly lower than the general population, indicating poorer quality of life.
  • The research identifies skeletal-related events, pain, and ECOG performance status as key factors affecting QOL and suggests that improving QOL may require a focus on pain management, prevention of skeletal issues, and support from a multidisciplinary team.
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Background: Schwannomas are well-encapsulated, benign neoplasms, and enucleation is a standard operation procedure. The incidence of neurological complications after surgical treatment for schwannomas of the extremities varies, and there is no consensus concerning predictive factors for complications. The aim of this study was to elucidate predictive factors for complications after surgical treatment of schwannomas that develop in the major nerves of the extremities.

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Background: With the improvement in survival of hepatocellular carcinoma patients, extrahepatic metastases have become a more frequent complication. Although pathological fractures or paralysis due to bone metastases deteriorate the quality of life of patients, no treatment guideline for bone metastases has been established. This study aimed to clarify the risk factors for these events and the clinical course of patients with bone metastases.

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Background: Despite the clinical benefits of eribulin on overall survival of advanced soft tissue sarcoma (STS) patients, treatment-related toxicity reduces their QOL. Body composition metrics (BCMs) are associated with poor outcome and drug toxicities in several cancers. This study investigated whether BCMs could predict drug toxicity occurrence in advanced STS patients treated with eribulin.

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