Publications by authors named "Ryo Tanaka"

Background: The prognosis of patients with synchronous oligometastatic non-small cell lung cancer (NSCLC) has been improving owing to advancements in imaging techniques and new treatment approaches such as tyrosine kinase inhibitors. This study aimed to investigate the long-term outcomes, including the clinical course after recurrence, of patients with synchronous oligometastatic NSCLC with only brain metastases, treated with bifocal treatment.

Methods: We retrospectively analyzed 22 patients with clinical T1-4 and N0-1 NSCLC with synchronous brain metastases who were diagnosed by preoperative PET/CT and brain CT or MRI and underwent pulmonary resection for the primary site and surgery or radiation therapy for brain metastases at our institution from 2005 to 2019.

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: The accurate prediction of postoperative renal function (post-RF) in living kidney donors is essential for optimizing donor safety and long-term health. After nephrectomy, renal function can be significantly altered, owing to the functional adaptation of the remaining kidney; however, the extent of this has not been investigated. This study aimed to examine how various donor factors affect functional adaptation after nephrectomy, and to develop a new predictive model.

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  • Renal fibrosis worsens with oxidative stress during renal failure, and this study investigates whether silicon-based agents can help combat fibrosis in a mouse model.
  • Mice treated with silicon showed a significant reduction in renal fibrosis, tubular cell death, and harmful protein expressions by day 14 after surgery compared to untreated groups.
  • RNA sequencing indicated that silicon treatment downregulated pathways related to tissue fibrosis and reduced levels of pro-fibrotic factors and oxidative stress in the renal tissues.
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This study determined the characteristics of the phase angles (PhAs) of the trunk, affected limb, and unaffected limb at admission and their relationship with walking ability at discharge in patients with stroke and traumatic brain injury in a convalescent rehabilitation ward. Stroke and traumatic brain injury survivors with hemiplegia admitted to a convalescent rehabilitation ward were divided into independent- and dependent-walking groups. The trunk, affected limb, and unaffected limb PhAs were evaluated using bioelectrical impedance analysis and compared between the independent- and dependent-walking groups.

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  • * This study introduces a new photoswitch, sterically hindered stiff stilbene (HSS), which shows significant structural changes and stability, allowing for enhanced understanding and control of polymer conformations.
  • * The research demonstrates the ability to reverseibly control hydrodynamic volume in solution and achieve significant macroscopic changes in properties like transmittance and wettability, highlighting the potential for advanced applications in smart materials.
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  • The study explores the measurement of glomerular filtration rate (GFR), suggesting that the rare amino acids d-serine and d-asparagine can provide a more accurate assessment than traditional urine collection methods.
  • A cross-sectional analysis involving 209 kidney transplant donors and recipients utilized urine levels of these amino acids to establish an equation for estimating urine volume (eUV), which helped correct GFR measurements.
  • Results showed that d-serine and d-asparagine clearances had less bias compared to creatinine, highlighting their potential for improving GFR estimations and urine volume assessments.
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Kidney transplantation is the most optimal treatment for patients with end-stage renal disease, offering significant improvements in patient outcomes over dialysis. However, the potential for immune rejection, where the recipient's immune system attacks the transplanted kidney, can compromise transplant success. The complement system, a key component of the immune response, plays a crucial role in both acute and chronic rejection, including T-cell- and antibody-mediated rejection.

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Introduction: Understanding of adverse reactions to coronavirus disease 2019 vaccines remains limited.

Case Presentation: Case 1: A 52-year-old woman, post-kidney transplantation, experienced sudden vision loss in her left eye after receiving a second dose of coronavirus disease 2019 vaccine. She was diagnosed with ischemic optic neuropathy.

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Epithelial-mesenchymal transition (EMT) is a step in the process through which colorectal cancer cells metastasize by gaining the cellular mobility associated with mesenchymal cells. However, whether the EMT occurs in cells tightly bound to each other remains largely unknown. In this study, we examined the dual influence of intercellular contact and epidermal growth factor (EGF) signaling on the induction of EMT in SW480 human colon carcinoma cells.

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Background Although epigenetic modifications have been expected to play an important role in neuroplasticity for stroke recovery, the role of dynamic microRNA (miRNA) regulation related to functional outcomes after ischemic stroke remains unclear. Therefore, the current study performed a comprehensive miRNA expression analysis in serum to identify specifically altered circulating miRNAs associated with different grades of functional outcomes in patients with acute ischemic stroke (AIS). Methods Twelve patients with AIS in the middle cerebral artery region were included in this study.

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  • Accurate evaluation of renal function in living kidney donor candidates (LKDCs) is essential to avoid post-surgery kidney failure, and various eGFR equations were tested for effectiveness.
  • The study analyzed data from 752 LKDCs between 2006 and 2020, comparing multiple eGFR equations, including CKD-EPI variations and Japanese modifications, to determine which best assesses donor suitability.
  • Results showed that the CKD-EPI equation using cystatin C had the lowest biases and errors, but some formulas tended to overestimate or underestimate GFR readings, affecting donor classifications.
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A 32-year-old male presented with unilateral orbital-temporal pulsatile headache, followed by fever in the 38°C range and nausea. The patient experienced two episodes of transient dysarthria and tinnitus, each lasting several minutes. MRI revealed swelling of the left cerebral cortex, enhancement of the leptomeninges, dilation of the left middle cerebral artery, and subcortical FLAIR hypointensity.

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  • The study explored the link between sarcopenic obesity and frailty risk in older women with locomotive syndrome (LS), finding that this condition can hinder daily activities and muscle strength.
  • Of the 158 participants, 32.9% were classified as at risk for frailty, with varied body composition: 30.4% normal, 32.9% sarcopenic, 22.8% obese, and 13.9% sarcopenic obese.
  • Results indicated that both sarcopenia and sarcopenic obesity significantly increased frailty risk, while the impact of obesity alone was less clear, suggesting more research is needed in this area.
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  • The study used neutron reflectivity to examine the interface between deuterated polyethylene (dPE) films and silicon substrates, finding water accumulation even in normal conditions.
  • After treating the dPE films, it was revealed that the adsorption layer consisted of an inner layer (about 3.7 nm thick) and a thin outer layer, with the inner layer having a density similar to bulk polyethylene.
  • Understanding the structure of these layers is important for enhancing the performance of polymer/inorganic nanocomposites, especially since crystalline polyolefins are commonly used as matrix materials.
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  • The study analyzed 1589 forensic autopsy cases aged 40 and older to understand the prevalence and features of primary age-related tauopathy (PART), finding that it peaked in individuals in their 60s.
  • Among the cases, a significant portion had additional comorbid conditions, especially in those 80 and older, with notable differences in suicide and dementia rates based on the presence of argyrophilic grain disease and Lewy pathology.
  • The findings indicate the need to reevaluate the diagnostic criteria for PART due to its complexity and association with other neurological disorders.
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Breast milk contains numerous factors that are involved in the maturation of the immune system and development of the gut microbiota in infants. These factors include transforming growth factor-β1 and 2, immunoglobin A, and lactoferrin. Breast milk factors may also affect epidermal differentiation and the stratum corneum (SC) barrier in infants, but no studies examining these associations over time during infancy have been reported.

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Background: Extracellular adenosine 5'-triphosphate (ATP) acts as a signaling molecule in the peripheral nerves, regulating myelination after nerve injury. The present study examined whether the cerebrospinal fluid (CSF) ATP levels in patients with Guillain-Barré syndrome (GBS) and chronic inflammatory demyelinating polyneuropathy (CIDP) are related to disease severity.

Methods: CSF ATP levels in 13 patients with GBS and 18 patients with CIDP were compared with those in a control group of 16 patients with other neurological diseases (ONDs).

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The prevalence of locomotive syndrome naturally increases with age, but approximately half of nonelderly individuals also meet the criteria for locomotive syndrome, suggesting that even younger people need to pay attention to their own health status. Sleep is important for physical, cognitive, and psychological health. Some individuals with poor sleep quality may be at risk of developing negative health status.

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Breast cancer is one of the leading causes of cancer globally. Radiotherapy following breast-conserving surgery is the standard treatment of breast cancer. Recently, hypofractionated irradiation comprising 42.

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Fabrication of engineered intestinal tissues with the structures and functions as humans is crucial and promising as the tools for developing drugs and functional foods. The aim of this study is to fabricate an engineered intestinal tissue from Caco-2 cells by air-liquid interface culture using a paper-based dual-layer scaffold and analyze its structure and functions. Just by simply placing on a folded paper soaked in the medium, the electrospun gelatin microfiber mesh as the upper cell adhesion layer of the dual-layer scaffold was exposed to the air, while the lower paper layer worked to preserve and supply the cell culture medium to achieve stable culture over several weeks.

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Background: Cutaneous polyarteritis nodosa (cPN) is a necrotizing arteritis of medium-sized vessels limited to the skin. Because of its rarity and the diversity of its clinical manifestations, there is no consensus treatment. Moreover, there are no established indicators that predict disease severity or its outcome.

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  • The study aimed to validate clinical prediction rules for identifying locomotive syndrome in older adults living in the community, which can help in early detection.
  • Researchers evaluated physical function tests and demographic factors from 280 participants, mainly women with an average age of 74.8 years, to assess the severity of locomotive syndrome.
  • The results showed that the first two predictive models had moderate accuracy in discriminating the stages of locomotive syndrome, indicating their reliability for use in this population.
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Background: Social restrictions associated with the COVID-19 pandemic have altered children's movement behaviours and impacted their mental health. However, the influence of social restrictions on subjective health complaints remains inadequately understood. This study compared adherence to 24-hour movement behaviour guidelines and the prevalence of subjective health complaints during school closure and one year after reopening.

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