Publications by authors named "Naoki Hamada"

Epiglottitis is a critical infection that can result in upper airway obstruction. While bacterial infections are the most common cause of acute epiglottitis, Candida epiglottitis remains relatively rare. We report a case involving an 82-year-old male undergoing chemotherapy for small cell lung cancer.

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Article Synopsis
  • A study was conducted to investigate the safety and effectiveness of docetaxel/ramucirumab (DOC/RAM) therapy in patients with advanced non-small cell lung cancer (NSCLC) who also had interstitial lung disease (ILD).
  • The study found that 25% of patients with pre-existing ILD developed DOC/RAM-induced interstitial pneumonia, while no patients without ILD experienced this condition.
  • Despite the increased incidence of pneumonia in those with ILD, the treatment did not significantly impact the overall treatment outcomes like objective response rate, progression-free survival, or overall survival.
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Background: We conducted a prospective observational study to elucidate the long-term prognosis and management of chronic obstructive pulmonary disease (COPD) in clinical practice in Japan in the mid-2010s.

Methods: This prospective cohort study included 29 facilities. Data from 427 patients clinically diagnosed with COPD, enrolled between September 2013 and April 2016, were analyzed.

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  • Invasive tracheobronchial aspergillosis (ITBA) is a serious fungal infection that affected a 75-year-old man with multiple health issues, including lung cancer and COPD.
  • The patient experienced severe breathing difficulties, and while doctors initially thought his symptoms were due to cancer recurrence, a post-mortem revealed that ITBA was the actual cause.
  • The case underscores the complexity of diagnosing ITBA, especially in patients with various risk factors, highlighting the need to consider fungal infections when diagnosing airway problems in high-risk individuals.
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SMARCA4-deficient undifferentiated tumor (SMARCA4-UT) is a rare and aggressive malignancy characterized by the loss of SMARCA4 protein expression. It typically affects middle-aged male smokers and has a poor prognosis due to its rapid progression and metastatic potential. This case report presents a 73-year-old male diagnosed with a thoracic SMARCA4-UT.

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Platypnea-orthodeoxia syndrome (POS) is a rare condition characterized by dyspnea and oxygen desaturation that worsens in the upright position and improves when lying down. We report the case of a 67-year-old male who presented with a 14-month history of dyspnea in the sitting/standing position. Despite treatment for suspected asthma, his symptoms persisted, and he was referred to our hospital for further evaluation.

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Background/aim: Nivolumab and ipilimumab combination therapy has been extensively explored for the treatment of advanced non-small-cell lung cancer (NSCLC) through the pivotal phase III trials CheckMate 227 and CheckMate 9LA. However, the relationship between immune-related adverse events (irAEs) and the effectiveness of nivolumab plus ipilimumab-based therapy in a real-world clinical setting remains uncertain.

Patients And Methods: We performed a retrospective analysis of 28 patients with advanced or recurrent NSCLC who underwent treatment with nivolumab plus ipilimumab, with or without platinum-doublet chemotherapy, from February 2021 to January 2023.

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This study examined whether tactile gating induced by the descending motor command to one finger spreads out to the other fingers to which the command is not delivered and whether this gating is dependent on the target finger to which the command is delivered. The change in perceptual threshold to the digital nerve stimulation of one finger induced by tonic contraction of the first dorsal interosseous or abductor digiti minimi muscle was examined. The perceptual threshold to the digital nerve stimulation of the thumb or little finger was increased by tonic contraction of the abductor digiti minimi muscle.

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In the present study, we examined the immediate effect of allowing healthy participants to view their mirror-reflected body image on static and dynamic balance. We placed a mirror to allow participants to frontally view their own body image while maintaining a quiet stance or while engaged in a dynamic postural standing task. On measures of body sway during quiet stance, there were no effects of this visual feedback, supporting the view that human beings have no central mechanism for viewing the mirror-reflected body image to control body sway during quiet stance.

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  • This study looked at a protein called periostin to see if it could help doctors predict how well patients with a lung disease called idiopathic pulmonary fibrosis (IPF) would do after treatment with a drug named nintedanib.
  • Researchers measured different levels of periostin in 87 patients and compared them to 43 other patients who hadn't been treated with antifibrotic drugs before.
  • They found that higher levels of periostin were linked to better chances of survival and more effectiveness of nintedanib in treating IPF, which might help doctors make better treatment plans in the future.
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Objective: Few prospective cohort studies with relatively large numbers of patients with non-idiopathic pulmonary fibrosis (non-IPF) of idiopathic interstitial pneumonia (IIP) have been described. We aimed to assess disease progression and cause of death for patients with non-IPF IIPs or IPF under real-life conditions.

Methods: Data were analysed for a prospective multi-institutional cohort of 528 IIP patients enrolled in Japan between September 2013 and April 2016.

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This present study examined the effect of the laterally moving tactile stimuli (LMTS) to the sole on the anticipatory postural adjustment (APA) of the gait initiation. Thirteen healthy males participated in this study. A sound cue was provided at the beginning of each trial.

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While high-level evidence is lacking, numerous retrospective studies have depicted the value of supplemental oxygen in idiopathic pulmonary fibrosis (IPF) and other interstitial lung diseases, and its use should be encouraged where necessary. The clinical course and survival of patients with IPF who have been introduced to oxygen therapy is still not fully understood. The objective of this study was to clarify overall survival, factors associated with prognosis, and causes of death in IPF patients after the start of oxygen therapy.

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Purpose: A brimonidine tartrate 0.1%/brinzolamide 1% fixed-dose combination (BBFC) was recently approved for glaucoma and ocular hypertension treatment in Japan. We investigated the efficacy and safety of BBFC used concomitantly with prostaglandin analogs (PG) or a PG/beta-blocker fixed-dose combination (PG/beta FC).

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Background: Damage-associated molecular pattern (DAMP)-related immunogenic cell death triggers secondary adaptive immune responses. The relationship between DAMP levels and prognosis in patients with non-small cell lung cancer (NSCLC) who undergo a combination therapy of immune checkpoint inhibitors (ICI) and chemotherapy remains unclear.

Methods: Serial plasma samples were prospectively collected from 45 patients treated with ICI combination therapy for advanced NSCLC.

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Background: Immune checkpoint inhibitors (ICIs) have been a breakthrough in cancer therapy. ICI therapy is generally better tolerated than cytotoxic chemotherapy; however, hematological adverse events (AEs) have not been fully analyzed. Hence, we performed a meta-analysis to evaluate the incidence and risk of ICI-related hematological AEs.

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The purpose of the present study is to investigate whether perceptual sensitivity to digital nerve stimulation is modulated by the afferent volley from the digital nerve of a contralateral finger. Fifteen healthy humans participated in this study. A test stimulus was given to the right-hand index finger, and a conditioning stimulus was given to one of the five fingers on the left hand 20, 30, or 40 ms before the test stimulus.

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The present study examined whether the perceptual sensitivity and excitability of the primary sensory cortex are modulated by the afferent volley from the digital nerve of a conditioned finger within a short period of time. The perceptual threshold of an electrical stimulus to the index finger (test stimulus) was decreased by a conditioning stimulus to the index finger 4 or 6 ms before the test stimulus, or by a stimulus to the middle or ring finger 2 ms before that. This is explained by the view that the afferent volleys from the digital nerves of the fingers converge in the somatosensory areas, causing spatial summation of the afferent inputs through a small number of synaptic relays, leading to the facilitation of perceptual sensitivity.

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Background: Numerous studies investigated patients with IPF; however, only a few examined patients with idiopathic interstitial pneumonias (IIPs).

Methods: The Japanese Idiopathic Interstitial Pneumonias (JIPS) Registry, which was initiated in December 2016, is a multicenter prospective observational study of patients newly diagnosed with IIPs from 86 facilities treating ILDs. The plan is to enroll more than 600 new patients during the 2-year enrolment period and to follow their progress for 3 years after the last case enrolment.

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Under certain conditions, a tactile stimulus to the head induces the movement of the head away from the stimulus, and this is thought to be caused by a defense mechanism. In this study, we tested our hypothesis that predicting the stimulus site of the head in a quiet stance activates the defense mechanism, causing a body to sway to keep the head away from the stimulus. Fourteen healthy male participants aged 31.

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Background: Diffuse pulmonary ossification is a specific lung condition that is accompanied by underlying diseases. However, idiopathic dendriform pulmonary ossification (IDPO) is extremely rare, and the clinical features remain unclear. In this study, we aimed to report the clinical characteristics of IDPO.

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Article Synopsis
  • The study focused on arthralgia, a common side effect of immune checkpoint inhibitors (ICIs) in cancer treatment, and its impact on overall survival (OS) in patients.
  • Researchers conducted a meta-analysis involving 14,377 patients from 24 randomized controlled trials (RCTs), finding that those with ICI-induced arthralgia generally experienced better OS.
  • The analysis also highlighted a significant association between the development of arthralgia and other immune-related adverse events, suggesting the need for careful monitoring of patients experiencing these side effects.
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Objectives: We aimed to evaluate the efficacy and safety of haematopoietic stem cell transplantation (HSCT) in patients with systemic sclerosis.

Methods: A systematic literature review and meta-analysis were carried out. We compared survival outcomes using the Kaplan-Meier method with patient-level data between HSCT and intravenous pulse cyclophosphamide.

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