Publications by authors named "Hiroshi Kamiryo"

Background: The increasing number of patients with miliary tuberculosis (MTB) is a concern in an aging society because of its high mortality rate. Several prognostic biomarkers for MTB have been identified; however, the predictive ability of monocytes as biomarkers remains unknown. This study demonstrates the usefulness of monocytes as prognostic biomarkers for MTB.

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  • Cholinergic urticaria (CholU) has several subtypes: conventional sweat allergy-type (SAT-CholU), CholU with palpebral angioedema (CholU-PA), and CholU with acquired anhidrosis/hypohidrosis (CholU-Anhd).
  • The study assessed bronchial responsiveness, respiratory symptoms, and exhaled nitric oxide (FeNO) among the different subtypes, finding no significant differences in these measurements.
  • It was noted that patients with CholU-PA had a higher need for asthma treatment compared to SAT-CholU, suggesting a potential link between CholU-PA and asthma.
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Objective Bronchial thermoplasty (BT) is a bronchoscopic procedure for patients with severe asthma. Although it has been suggested that BT works by reducing airway smooth muscle, the detailed mechanism underlying its effects is still unknown. Methods We performed xenon ventilation computed tomography (Xe-CT) before each BT procedure and six weeks after the third treatment to assess the improvement in lung ventilation at each separate lung region.

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  • The study investigates a previously unreported condition, lettuce-associated respiratory allergy, primarily among lettuce farmers who experienced allergic symptoms due to their occupation.
  • Out of the 932 farmers surveyed, 7% showed respiratory symptoms related to lettuce exposure, with several patients diagnosed with allergies confirmed through tests that revealed an elevated response to specific allergens.
  • The research identified a specific allergen, epidermis-specific secreted glycoprotein EP1-like, which could lead to better testing and treatment options for those affected by lettuce allergies.
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Pulmonary lymphangioleiomyomatosis accounts for the majority of cadaveric lung transplantation cases. Post-transplantation management is continuingly necessary not only to prevent the progression of LAM but also to address complications. A woman with lymphangioleiomyomatosis underwent cadaveric lung transplantation.

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Purpose: Adjuvant chemotherapy with cisplatin (CDDP) plus vinorelbine is the standard regimen for the treatment of non-small cell lung cancer (NSCLC). However, CDDP elicits severe toxic effects, including emesis, neurotoxicity, and renal damage; carboplatin (CBDCA) may be a feasible alternative for CDDP-unfit patients. CBDCA plus paclitaxel (PTX) adjuvant chemotherapy showed a survival benefit for patients with stage IB tumors >4 cm in size, while CBDCA plus nanoparticle albumin-bound (nab)-PTX showed greater efficacy and lower neurotoxicity than CBDCA plus PTX in advanced NSCLC.

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In developed countries such as North America, the decline in mortality from bronchial asthma has ceased since 2006. The decline in mortality rate is also decreasing in Japan, where about 1,500 asthma deaths have been reported. Among these, elderly people aged 65 years or over account for about 90% of cases.

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Transformation to small cell lung cancer is one phenomenon of acquired resistance to anaplastic lymphoma kinase (ALK) tyrosine kinase inhibitors in ALK rearrangement-positive non-small cell lung cancer (NSCLC). Few case reports have focused on other types of histological transformation. We report a case of transformation of ALK rearrangement-positive adenocarcinoma to NSCLC with neuroendocrine differentiation during alectinib therapy.

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Hypertrophic pulmonary osteoarthropathy (HPO) is a paraneoplastic syndrome characterized by digital clubbing, arthritis, and periostitis. Tumor removal usually leads to the resolution of these symptoms. We herein report the efficacy of crizotinib treatment for treating the symptoms of HPO associated with c-ros oncogene 1 receptor tyrosine kinase (ROS1)-rearranged lung cancer.

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Background: Sphingosine kinase phosphorylates sphingosine to generate sphingosine 1 phosphate (S1P) following stimulation of the five plasma membrane G-protein-coupled receptors. The objective of this study is to clarify the role of S1P and its receptors (S1PRs), especially S1PR3 in airway epithelial cells.

Methods: The effects of S1P on asthma-related genes expression were examined with the human bronchial epithelial cells BEAS-2B and Calu-3 using a transcriptome analysis and siRNA of S1PRs.

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Objective: Endobronchial ultrasonography and guide sheath (EBUS-GS) technique has high diagnostic yield in lung nodules. Virtual bronchoscopic navigation (VBN) can lead bronchoscope to the target bronchi. The aim of this prospective study was to compare the diagnostic yield of two bronchoscopic procedures: bronchoscopy under EBUS-GS and VBN with or without x-ray fluoroscopy in small peripheral pulmonary lesions (PPLs, ≤30mm) with apparent CT-bronchus sign.

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Hypoparathyroidism with sensorineural deafness and renal dysplasia (HDR) syndrome is an autosomal dominant condition caused by mutations of the gene encoding the dual zinc-finger transcription factor, GATA3. A previous study identified some patients with gene variants and breast cancer, suggesting that variants may contribute to tumorigenesis in estrogen receptor 1-positive breast tumors; however, these patients did not have HDR syndrome. A 32-year-old nonsmoking Japanese woman was histologically diagnosed with lung squamous cell carcinoma associated with HDR syndrome and a c.

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A 62-year-old male with lung adenocarcinoma harboring an exon 19 deletion in the Epidermal growth factor receptor (EGFR) was treated with EGFR-tyrosine kinase inhibitors (TKIs) and several cytotoxic agents. After administering a fifth-line chemotherapy regimen, a liver biopsy revealed a diagnosis of recurrence with a T790M mutation. After an 82-day course of osimertinib therapy, the patient developed osimertinib-induced interstitial lung disease (ILD).

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  • - A 20-year-old Japanese woman with pulmonary atresia was found to have non-small cell lung cancer after abnormal lung and lymph node masses were detected.
  • - Surprisingly, the lung tumor showed spontaneous regression during follow-up.
  • - Four months later, she had sudden intestinal bleeding, and tests revealed the small intestine tumor matched the lung tumor, leading to a diagnosis of epithelial angiosarcoma, suggesting possible metastasis from the lung.
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Background/aim: Amrubicin (AMR) has shown promising activity for lung cancer. However, little is known about the mechanism underlying resistance to this agent. The aim of this study was to elucidate the mechanism underlying resistance to AMR.

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Background: Sphingosine-1-phosphate (S1P) is a bioactive phospholipid that acts as a signal transducer by binding to S1P receptors (S1PR) 1 to 5. The S1P/S1PRs pathway has been associated with remodeling and allergic inflammation in asthma, but the expression pattern of S1PR and its effects on non-immune cells have not been completely clarified. The aim of this study was to examine the contribution of the signaling of S1P and S1PRs expressed in airway epithelial cells (ECs) to asthma responses in mice.

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Background And Objective: Endobronchial ultrasonography with a guide sheath transbronchial biopsy (EBUS-GS TBB) has been used to diagnose peripheral pulmonary lesions (PPLs). In this study, we evaluated the diagnostic utility of conventional TBB after EBUS-GS TBB.

Methods: A retrospective analysis of patients who underwent conventional TBB after EBUS-GS TBB for PPL between August 1, 2012 and December 31, 2014.

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  • Lung cancer is a significant health issue for individuals with HIV in Japan, with increasing cases and high mortality rates among this population.
  • A study from 1986 to 2013 identified 43 HIV-positive lung cancer patients, revealing that most were male, with a median age of 60, and the majority developed cancer during the antiretroviral treatment era.
  • The findings show that lung cancer incidence is rising in Japan, with similar EGFR mutation rates to the general population and distinct clinical characteristics compared to HIV patients in Western countries.
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We evaluated the usefulness of oximetry tests that are frequently used as screening tools for sleep apnea syndrome (SAS) by determining the level of agreement between oximetry test results and polysomnography test (PSG) results. We retrospectively examined 135 patients suspected of having SAS. Although the oximetry desaturation index (DSI) seemed better than the oximetry apnea index in the agreement with the polysomnography respiratory disturbance index (RDI), the criteria of DSI greater than or equal to 15 was not sensitive enough to screen for moderate SAS (PSG-RDI >or= 20).

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