Publications by authors named "Kobayashi O"

We propose density functional theory (DFT)- and random forest (RF)-based theoretical and machine learning (ML) models, respectively, for predicting reaction barriers (Δ) using acrylate and methacrylate radical reactions as representatives. DFT is used to determine 100 transition state (TS) structures of both radicals, after which the obtained data are used to determine theoretical relationships (explained with Bell-Evans-Polanyi or Brønsted-Evans-Polanyi (BEP) and Marcus-like models) between Δ and stabilization energy of the product. Next, we construct several theoretical regression models for predicting Δ of the representative reactions based on our theoretical analyses, presenting an RF-based ML model that eases Δ predictions by circumventing time-consuming DFT calculations.

View Article and Find Full Text PDF

We have developed a novel cross-immune antigen vaccine platform for influenza A virus. The vaccine antigen is a fusion protein of headless hemagglutinin (HA) and matrix protein 1 (M1), which possess B-cell and T-cell epitopes, respectively, that are conserved among subgroup A viruses. The single molecule of headless HA and M1 fusion protein forms an oligomer by self-assembly of M1.

View Article and Find Full Text PDF
Article Synopsis
  • The study investigates the effectiveness of a pericapsular nerve group (PENG) block in improving prehabilitation for patients with femoral neck fractures scheduled for hip arthroplasty, focusing on pain management without sacrificing motor function.
  • It will enroll 100 patients with specific fracture types, randomly assigning them to receive either a PENG block or a placebo before beginning a structured prehabilitation program aimed at enhancing mobility and surgical outcomes.
  • The main measurements will include how many patients complete the prehabilitation, their pain levels, and various postoperative outcomes like bleeding and mobility scores, comparing those who received surgery within 48 hours to those who did not.
View Article and Find Full Text PDF
Article Synopsis
  • A study explored the effectiveness of the oral human papillomavirus (HPV) vaccine IGMKK16E7 in treating cervical intraepithelial neoplasia, showing promising results where some patients experienced a complete histological response.
  • Researchers analyzed cervix-exfoliated cell samples from 42 patients to identify biomarkers that could predict the success of the vaccine, focusing on various gene expressions related to immune response.
  • The key finding was that lower levels of the biomarker CD86 correlated with a higher likelihood of achieving a complete response to the vaccine, with CD86-low patients demonstrating a significantly increased response rate compared to those with higher CD86 levels.
View Article and Find Full Text PDF
Article Synopsis
  • Some older patients with hip fractures might have to wait a long time for surgery, especially if they have other health problems or live in places without good medical help.
  • A special pain management technique called the PENG block can help these patients feel less pain while they get ready for surgery.
  • In a study of ten patients, most of them were able to move from their beds to wheelchairs after getting this pain relief treatment before their surgery.
View Article and Find Full Text PDF

Cervical cancer affects women worldwide and is the most common human papillomavirus (HPV)-associated cancer. Carcinogenesis caused by HPV results in specific cancer behavior because of the underlying viral infection. The mechanism and timing of the transformation from viral infection to cancer cells have been elucidated in detail.

View Article and Find Full Text PDF

Background: Understanding background factors is beneficial for interpreting general movements (GMs). This study examines the factors involved in preterm-writhing GMs by comparing twins and singletons.

Method: The subjects were 107 infants cared for at Oita University.

View Article and Find Full Text PDF

Background: Patients with cancer, particularly those undergoing chemotherapy, are at risk from the low immunogenicity of Coronavirus Disease 19 (COVID-19) vaccines.

Methods: This prospective study assessed the seroconversion rate of COVID-19 vaccines among patients with cancer and hospital staff. Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) spike protein-specific IgG (S-IgG) concentrations were evaluated before the first vaccination, and 1-3 and 4-6 months after the second vaccination.

View Article and Find Full Text PDF

Cervical cancer and its precursor lesion, cervical intraepithelial neoplasia (CIN), are caused by high-risk human papillomavirus (HPV) viral infection and are highly susceptible to host immunity targeting of HPV viral proteins, which include both foreign antigens and cancer antigens expressed by tumors. Immunotherapy that induces Th1 immunoreactivity against viral proteins is expected to take advantage of this immunological regression mechanism. However, although cancer immunotherapies for cervical cancer and CIN have been developed over the past several decades, none have been commercialized.

View Article and Find Full Text PDF
Article Synopsis
  • A clinical trial tested an oral vaccine, IGMKK16E7, derived from lacticaseibacillus to treat patients with HPV-16-positive cervical lesions, aiming to promote local immune responses as opposed to systemic ones.
  • Results showed that among high-dose recipients, 31.7% experienced complete regression of lesions compared to only 12.5% in the placebo group, indicating potential effectiveness of the vaccine.
  • The study found no significant difference in adverse effects between high-dose and placebo groups, suggesting that IGMKK16E7 is safe while leading to promising immune responses against HPV-16.
View Article and Find Full Text PDF

Aim: To clarify the relationship between early infantile spontaneous movement of very-low-birth-weight infants (VLBWIs) and sensory characteristics in childhood.

Study Design: Prospective cohort study. We investigated the association between the Motor Optimality Score-Revised (MOS-R), a detailed assessment of general movements (GMs) at the corrected age of 9-17 weeks and the Infant/Toddler Sensory Profile Japanese version (ITSP-J) at the corrected age of 3 years.

View Article and Find Full Text PDF

Introduction: Favipiravir terminates severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) replication. Accordingly, early administration of favipiravir to SARS-CoV-2-infected coronavirus disease 2019 (COVID-19) patients may be expected to suppress disease progression.

Methods: A randomized double-blind placebo-controlled trial was conducted to demonstrate efficacy of favipiravir in reducing disease progression in patients with mild COVID-19.

View Article and Find Full Text PDF

Alveolar echinococcosis (AE), caused by Echinococcus multilocularis, is an aggressive and potentially critical infestation that primarily affects the liver and can metastasize to any part of the body. We herein report two cases of echinococcosis, which could be differentiated from malignancy on imaging studies, with infections of the liver and mediastinal lymph nodes, and also associated with systemic disseminated lesions. AE is a very invasive infectious disease, and in order to detect such lesions at an early stage when they are still resectable, it is necessary to understand the characteristic imaging findings and determine the patient's current medical history.

View Article and Find Full Text PDF
Article Synopsis
  • * Researchers analyzed data from 2,107 thoracic cancer patients between March 2020 and May 2021 and found that only 7 (0.3%) developed COVID-19, with most rRT-PCR tests revealing non-COVID-19 pneumonia or tumor fever instead.
  • * The majority of patients who tested positive for COVID-19 also showed seroconversion, but the rate of false-negative cases was very low at 0.9%, suggesting that COVID-19 incidence in this group was minimal during the early pandemic
View Article and Find Full Text PDF

Video recording and editing of general movements (GMs) takes time. We devised an algorithm to automatically extract the period of GMs emergence to assist in the assessment of GMs. The algorithm consisted of δHR: subtracting the moving average heart rate (HR) for the past 60 s from the average instantaneous HR; and %δHR: the percentage of the instantaneous HR to the moving average HR.

View Article and Find Full Text PDF

Bacterial vaginosis due to Gardnerella vaginalis (GV) is one of the main causes of preterm birth. Antimicrobial function of the cervical glands prevents ascending pathogen infection. This study investigated the effect of GV on the cervical gland cells.

View Article and Find Full Text PDF

Gaining insight into the encapsulation mechanism is important for controlling the encapsulation rate toward the self-assembly of gear-shaped amphiphile molecules (GSAs). To this aim, we conducted molecular dynamics (MD) simulations for three different hexameric nanocubes (, , and ) of GSAs (, , and , respectively) to elucidate the quantitative structure-property relationship between the stability of the nanocubes and the rate of encapsulation of a guest molecule. The , , and monomers differ from each other in the number of methyl groups, having three, zero, and two methyl groups, respectively.

View Article and Find Full Text PDF

Vedolizumab (VDZ) is an α4β7 integrin-antibody used to manage refractory ulcerative colitis (UC). This retrospective multicenter study aimed to identify predictors of efficacy or the time points when evaluation of VDZ therapy for UC would be most useful. We compiled data on 87 patients with moderate to severe active UC that was treated with VDZ.

View Article and Find Full Text PDF

Objective: This study evaluated the feasibility of a matching-pair test using eye-tracking technology to assess nusinersen effectiveness in patients with advanced spinal muscular atrophy (SMA) type I.

Methods: This prospective, observational study enrolled patients with 5q-SMA type I who had lost gross motor function. Three different levels of matching-pair tests were conducted using the eye-gaze system (My Tobii; TobiiDynavox Inc.

View Article and Find Full Text PDF

A patient diagnosed with trisomy 18 is at great risk of perioperative morbidity and mortality, especially with complex congenital cardiac anomalies. Here, we report successful anesthetic management of palliative esophageal-banding and gastrostomy for trachea-esophageal fistula in a patient who had a complex congenital heart disease with trisomy 18.

View Article and Find Full Text PDF
Article Synopsis
  • The study investigated the differences in antibody levels (N-IgG) for SARS-CoV-2 between individuals who experienced COVID-19 symptoms and those who did not.
  • Conducted at the National Cancer Center in Japan, the survey included 434 participants with no prior COVID-19 infections, focusing on self-reported symptoms since early 2020.
  • Results showed that individuals with symptoms had significantly higher N-IgG titers, indicating possible past infections, especially in those with high fevers and multiple symptoms.
View Article and Find Full Text PDF

One of the causes of preoperative hypokalemia is the prolonged use of herbal medicines, especially licorice. Licorice can induce pseudo-aldosteronism, hypertension, metabolic alkalosis, and hypokalemia. An 87-year-old woman with a history of knee osteoarthritis was scheduled to undergo a total knee arthroplasty (TKA) under spinal anesthesia.

View Article and Find Full Text PDF

To investigate the accuracy of fidgety movements (FMs) assessment in Japanese assessors. Sixty specialists participated in the first survey. Of the participants, 18 were assessors certified by the GMs basic-training course.

View Article and Find Full Text PDF