Publications by authors named "Obayashi S"

Study Design: Single institution observational study.

Objectives: To investigate the ceiling and floor effects of the Berg Balance Scale (BBS), Mini-Balance Evaluation Systems Test (BESTest), and Brief-BESTest, as well as to determine the intra- and inter-rater reliabilities and minimal detectable change (MDC) of the Mini-BESTest and Brief-BESTest in patients with acute and subacute incomplete cervical spinal cord injury (SCI) classified as AIS D.

Setting: Advanced critical care center of our university hospital.

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Article Synopsis
  • A 10-year simulation examines how relative humidity, temperature, and wind affect sonic boom loudness from a pseudo-Concorde and a low-boom supersonic aircraft using an acoustic propagation tool.
  • Using the EMAC model and ECMWF data, the study finds seasonal variations in loudness for the N-wave sonic boom, while low-boom aircraft show a broader range of perceived levels, making seasonal patterns unclear.
  • The research reveals that atmospheric conditions significantly influence sonic boom loudness, especially for low-boom aircraft at higher altitudes, with different factors impacting pressure changes at various altitudes.
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Background/aim: Treatment with taxanes can result in chemotherapy-induced peripheral neuropathy (CIPN). We investigated the efficacy and safety of mirogabalin for the treatment of CIPN in patients who had been administered perioperative chemotherapy including taxane-based agents for breast cancer.

Patients And Methods: We retrospectively analyzed the case of 43 patients with early breast cancer who received a taxane as perioperative chemotherapy and were administered mirogabalin at the diagnosis of CIPN.

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Background: Proximal femoral fractures in older adults affect prognosis, quality of life and medical expenses. Therefore, identifying patients with an elevated risk for proximal femoral fractures and implementing preventive measures to mitigate their occurrence are crucial.

Objective: This study aimed to develop an accurate in-hospital fracture prediction model that considers patients' daily conditions and medical procedure status.

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Background: Falls are the most frequent accident experienced by inpatients in hospitals. As falls affect patient outcomes, high fall risk factors should be studied to prevent falls and improve patient safety. However, the relationship between hospital unit characteristics and fall risk has never been assessed.

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In some cases of human epidermal growth factor 2 (HER2)-negative breast cancer, including triple-negative breast cancer, HER2 expression is sporadically and strongly upregulated, a condition known as HER2 heterogeneity. We investigated the clinicopathological features of patients with HER2 heterogeneity in triple-negative breast cancers treated with neoadjuvant chemotherapy. Thirty-nine patients with triple-negative breast cancer who had undergone preoperative chemotherapy participated in this study.

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Background: It remains a matter of debate as to what extent early intervention may facilitate long-term functional outcomes of preterm infants in the neonatal intensive care unit (NICU). We aimed to examine the effect of increasing physical therapy (PT) staff dedicated to the NICU on temporal changes (initiation, duration) of PT interventions and functional outcomes (acquisition of full oral feeding and Hammersmith Neonatal Neurological Examination).

Methods: Extremely low birth weight infants, retrospectively collected from an academic medical center, were allocated to two subgroups, either a baseline period (N = 48) without NICU-dedicated PT staff (non-dedicated group) or a quality improvement period (N = 42) with additional dedicated staff (dedicated group).

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It is well known that cortical damage may affect cognitive functions, whereas subcortical damage, especially brainstem stroke, would be far less likely to cause cognitive decline, resulting in this condition being overlooked. Few studies have focused on cognitive dysfunction after a pontine stroke. Here, we begin with describing our nine new case reports of in-depth neuropsychological findings from patients with pontine stroke.

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Background/aim: In patients with breast cancer, the expression of stathmin1 (STMN1) has been significantly related to a poor prognosis, cancer aggressiveness, and expression of cancer stem cell markers. The STMN1 protein is closely regulated by phosphorylation in four sites. However, few studies have investigated the relationship between the expression of phosphorylated STMN1 (pSTMN1) and clinicopathological findings, including tumor-aggressive biomarkers, in patients with breast cancer.

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Introduction: As the characteristics of coronavirus disease 2019 (COVID-19) vary across regions and countries, the relationship between regional characteristics, such as the distribution of physicians and hospital beds, and COVID-19 mortality was assessed in the 47 prefectures of Japan.

Methods: This ecological study was based on the number of patients with COVID-19 by prefecture during the seventh wave of COVID-19 in Japan (June-October 2022). COVID-19 mortality was indexed as the number of COVID-19 deaths divided by the number of new COVID-19 cases.

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Article Synopsis
  • There is an increasing number of older breast cancer patients with complex health issues, and understanding how body weight affects their treatment outcomes is important for developing optimal strategies.
  • A study analyzed data from 1,076 patients aged 70 and older who had curative surgery, categorizing them based on body mass index (BMI) to explore the link between body physique and prognosis.
  • Results showed that underweight patients had lower chemotherapy rates and shorter overall survival compared to those with normal or higher BMI, suggesting that weight should be a key consideration in treatment planning for older breast cancer patients.
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A large number of Veterans experience binge eating and overweight or obesity, which are associated with significant health and psychological consequences. The gold-standard program for the treatment of binge eating, Cognitive Behavioral Therapy (CBT), results in decreases in binge eating frequency but does not result in significant weight loss. We developed the Regulation of Cues (ROC) program to reduce overeating and binge eating through improvement in sensitivity to appetitive cues and decreased responsivity to external cues, an approach that has never been tested among Veterans.

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Background: Biopsychosocial factors are involved in the occurrence of chronic post-surgical pain (CPSP) after total knee arthroplasty (TKA). The purpose of this study was to develop a clinical prediction rule (CPR) that considers biopsychosocial factors to predict which patients are more likely to develop CPSP after TKA.

Methods: CPSP after TKA was dichotomized into CPSP and non-CPSP groups using the Likert scale and Minimal clinically important difference, and binomial logistic regression analysis was performed.

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A new model-position-sensing method for the levitation of models with a low fineness ratio (ratio of the longitudinal length to the diameter) in a magnetic suspension and balance system (MSBS) is proposed. MSBS is an ideal model-support device for wind-tunnel testing, which enables the study of flow fields around blunt bodies without flow disturbances introduced by mechanical support devices, with the aerodynamic forces determined from the magnetic forces using a pre-calibrated relationship. The new method allows wind tunnel experiments without mechanical supports with a low fineness ratio model.

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Mechanosensory neurons that innervate the tongue provide essential information to guide feeding, speech, and social grooming. We use in vivo calcium imaging of mouse trigeminal ganglion neurons to identify functional groups of mechanosensory neurons innervating the anterior tongue. These sensory neurons respond to thermal and mechanical stimulation.

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17α-ethinylestradiol (EE2), a derivative of 17β-estradiol (E2), is a potent estrogenic substance that is used as the estrogenic component of oral contraceptives (OCPs). However, women who take OCPs have an increased risk of cardiovascular events. Since few studies have examined EE2 endothelial effects, we explored the effects of EE2 on endothelial function in ovariectomized and isoflavone-free rats.

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The rules governing the dimensions of the Javelin were substantially changed in 1986. It was considered that this new design guaranteed there was zero pitching moment at 0° angle of attack and that the pitching moment decreased (became negative) with increasing angle of attack. The objective of this study is to investigate if the pitching moment remains always negative (nose-down rotation).

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Background/aim: Despite advances in the treatment of breast cancer, metastatic breast cancer (MBC) remains difficult to cure, and few MBC patients survive 10 years after receiving a breast cancer metastasis diagnosis. We collected the cases of patients with MBC who survived >10 years post-metastasis diagnosis and assessed the patients' characteristics.

Patients And Methods: We retrospectively analyzed the cases of 245 consecutive patients diagnosed with MBC between January 2005 and December 2012 at our institution.

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. In the acute phase of stroke, it is well known that the incidence and severity of unilateral spatial neglect (USN) are more significant in the right hemisphere injuries. Still, the detection of USN in left hemisphere injuries has been increasing in recent years.

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Introduction: Pregnancy- and lactation-associated osteoporosis (PLO) is a condition in which young women develop fractures during pregnancy or breastfeeding. Though PLO is a severely debilitating disease, its pathophysiology and epidemiology have not been clarified and its treatment has not been established. We aimed to identify the incidence and factors associated with fractures occurring within 2 years following an obstetric hospitalization.

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Objectives: To evaluate the characteristics of sarcopenic dysphagia (SD) and the prognosis of swallowing function in convalescent rehabilitation hospital patients; and to investigate the association between malnutrition severity and SD.

Design: A prospective, multi-center, cohort study.

Setting: We extracted registry data from the Japanese Sarcopenic Dysphagia Database, focusing on patients admitted to convalescent rehabilitation hospitals.

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Thalamic stroke may result in cognitive and linguistic problems, but the underlying mechanism remains unknown. Especially, it is still a matter of debate why thalamic aphasia occasionally occurs and then mostly recovers to some degree. We begin with a brief overview of the cognitive dysfunction and aphasia, and then review previous hypotheses of the underlying mechanism.

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Several target therapies for driver gene mutations related with lung cancer growth are clinically effective in patients with advanced non-small cell lung cancer. Gefitinib and alectinib have been reported as being effective and safe even in those with poor performance status (PS), but little is known about efficacy and tolerability of other TKIs. An 84-year-old man was diagnosed with non-small cell lung cancer (cT3N2M1c stage IVB).

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Article Synopsis
  • He experienced symptoms like low-grade fever, mild hypoxemia, and febrile neutropenia, requiring treatment with granulocyte colony-stimulating factor (G-CSF).
  • After further treatment with hydrocortisone, his condition improved, and his tumors remained stable for 10 months, highlighting potential complications from immune-checkpoint inhibitors during cancer treatment.
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  • - Cryptogenic bilateral fibrosing pleuritis is a rare and poorly understood lung condition with no known treatment options.
  • - A 61-year-old man exhibited symptoms such as thickening of the pleura and abnormal fluid in the chest, leading to a diagnosis after a surgical biopsy.
  • - Over 16 months, his respiratory health declined quickly, causing issues like high carbon dioxide levels in the blood, necessitating home oxygen and breathing support.
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