Publications by authors named "Tatsuya Miyamoto"

Objectives: Podoplanin (PDPN) expression in cancer-associated fibroblasts (CAFs) (CAF-PDPN) is considered a poor prognostic factor in nonsmall cell lung cancer, but little is known about its clinical significance in high-grade neuroendocrine carcinoma of the lung (HGNEC). This study examines the association between CAF-PDPN and stromal programmed death-ligand 1 (PD-L1) expression and the prognostic implications of CAF-PDPN and PD-L1 expression status in surgically resected HGNEC patients.

Methods: Immunohistochemical analyses were performed on 121 resected HGNEC specimens using antibodies against PDPN and PD-L1.

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Article Synopsis
  • Mixed-stack complexes made up of alternating donor and acceptor materials generally have poor electrical conductivity due to either being neutral or highly ionic, leading to a lack of conductive carriers.
  • This study successfully synthesized mixed-stack complexes at the neutral-ionic boundary, using specific donors and acceptors with compatible energy levels and orbital symmetry.
  • The resulting single-crystal complexes displayed greatly enhanced room-temperature conductivity, which is the highest reported for this type under normal conditions, and revealed significant changes in their electrical and optical properties based on temperature.
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Certain types of media breaking both space-inversion (P) and time-reversal (T) symmetries but preserving their combination PT exhibit the polarization rotation of reflected light even when that of transmitted light is prohibited. Such an effect is termed nonreciprocal rotation of reflected light (NRR). Although NRR shows nearly the same phenomenon as the magnetooptical Kerr effect or, equivalently, the Hall effect at optical frequencies, its origin is distinct and ascribed to a magnetoelectric (ME) effect at optical frequencies, i.

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Nearly monocyclic terahertz waves are used for investigating elementary excitations and for controlling electronic states in solids. They are usually generated via second-order optical nonlinearity by injecting a femtosecond laser pulse into a nonlinear optical crystal. In this framework, however, it is difficult to control phase and frequency of terahertz waves.

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Background: Pulmonary typical carcinoid occurring in hypoplasia of the right middle lobe is very rare.

Case Presentation: A routine examination's chest X-ray revealed an abnormal shadow in the right middle lung field of an 82-year-old Japanese woman. A chest computed tomography scan showed a solid 2.

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Article Synopsis
  • Modern organic conductors can be classified into low-molecular-weight and polymer-based materials, each with their own challenges in controlling conductive properties due to structural limitations.
  • Research focused on using single-molecular-weight oligomers as an alternative, specifically modeling a structure similar to doped poly(3,4-ethylenedioxythiophene) (PEDOT) to optimize electrical conductivity.
  • By creating a tetramer with a specific mixed sequence, the researchers achieved a significant increase in conductivity (36 S cm), the highest reported for single-crystalline oligomer conductors, and observed metallic behavior above room temperature for the first time in oligoEDOT.
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Several transcription factors in small cell lung cancer (SCLC), including achaete-scute homolog 1 (ASCL1) and neurogenic differentiation factor 1 (NEUROD1), contribute to rapid tumor growth and early metastatic dissemination. Recent studies suggested that these molecular subtypes represent neuroendocrine differentiation in dynamic SCLC evolution. In the present case, a 62-year-old man was diagnosed with limited disease SCLC originating from the right upper lobe.

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Intractable pneumothorax with poor lung function that has received multiple conservative treatments may occur. Case 1 was a 70-year-old woman with aspergilloma who was admitted for pneumothorax. Case 2 was a 68-year-old man with acute exacerbation of interstitial pneumonia who developed pneumothorax.

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In condensed matter, phase separation is strongly related to ferroelasticity, ferroelectricity, ferromagnetism, electron correlation, and crystallography. These ferroics are important for nano-electronic devices such as non-volatile memory. However, the quantitative information regarding the lattice (atomic) structure at the border of phase separation is unclear in many cases.

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Article Synopsis
  • Halogen-bridged linear chain metal complexes (MX-Chains) are studied for their unique quasi-1D electronic properties, with a focus on a new Ni-based compound containing hydroxy groups.
  • Analysis through single-crystal X-ray diffraction indicated the formation of sheets and single-chain structures, suggesting opposite electronic states (MH-like and CDW-like).
  • Magnetic measurements revealed a mix of high-spin Ni(II) and low-spin Ni(III), leading to the conclusion that the compound exists in an intermediate electronic state while also exhibiting semiconductive behavior along the chain direction.
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Objective: We investigated the association between overactive bladder (OAB) and urinary metabolites in men.

Methods: This prospective observational study included 42 men aged 65-80 years. The 3-day frequency volume chart (FVC), International Prostate Symptom Score (IPSS), and quality of life score were adapted to assess the micturition behavior.

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We report on our investigation of C-C bonding longer than 2.0 Å, which can be realized by perpendicularly facing two fluorenyl rings in the title compound. A small orbital overlap between the distantly positioned carbon atoms is observed as a small concentration of electrons on the X-ray electron density map.

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The Pd(iii) oxidation state is unusual and unstable since it strongly tends to disproportionate. We synthesized the quasi-one-dimensional (1D) halogen-bridged Pd(iii)-Cl complex [Pd(dabdOH)2Cl]Cl2 (1-Cl; dabdOH = (2S,3S)-2,3-diaminobutane-1,4-diol) with multiple hydrogen bonds. From single-crystal X-ray diffraction, the bridging Cl- ions were located at the midpoint of the Pd-Cl-Pd moieties in the 1D chains, indicating that the Pd ions are in a Pd(iii) average valence (AV) state.

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Objective: The clinical practice of safe and efficient surgery and professional development of general thoracic surgical trainee are both important issues for mentors. We investigated the usefulness of a three-dimensional (3D) endoscopic system application for lung cancer treatment as a tool for training surgical trainees.

Methods: Supervised by mentors, general thoracic surgical trainees were trained with video-assisted thoracoscopic surgery (VATS) for primary lung cancer using a 3D endoscopic system to enable them to become operators.

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Objectives: This study aimed to investigate whether the severity of emphysema as classified by Goddard score influences the prognosis of patients with early lung cancer, there are few reports about that.

Methods: From April 2009 to December 2016, we recruited 412 consecutive patients with completely resected clinical stage 0/IA/IB non-small cell lung cancer. The Goddard score assessed on preoperative computed tomography scan was retrospectively reviewed.

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Terahertz lights are usually generated through the optical rectification process within a femtosecond laser pulse in noncentrosymmetric materials. Here, we report a new generation mechanism of terahertz lights based upon a photoinduced phase transition, in which an electronic structure is rapidly changed by a photoirradiation. When a ferroelectric organic molecular compound, tetrathiafulvalene-p-chloranil, is excited by a femtosecond laser pulse, the ionic-to-neutral transition is driven and simultaneously a strong terahertz radiation is produced.

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Background: The choice between electrocautery or automatic suturing instruments for dissection of the lung parenchyma along the intersegmental plane during lung segmentectomy remains controversial. We hypothesized that a novel microwave surgical instrument (MSI) for dissecting the lung parenchyma could have excellent sealing effects. We examined the feasibility and safety of lung parenchymal dissection using a MSI during lung segmentectomy.

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An 86-year-old man fell from a farm trolley and presented with chest bruising. Chest computed tomography showed a hemopneumothorax, multiple right rib fractures, and a sternal fracture at the sternal angle. Although he was treated with a chest tube for drainage and external fixation, a flail chest and severe pain continued.

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Purpose: To investigate the association between nocturia and urinary metabolites in elderly men using metabolomic analysis.

Methods: We recruited 66 men aged 65-80 years. The 3-day frequency volume chart (FCV), International Prostate Symptom Score (IPSS), and quality of life score were used to assess micturition behavior.

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Article Synopsis
  • - The study aimed to evaluate the effectiveness of complete video-assisted thoracoscopic surgery (cVATS) lobectomy using a three-dimensional (3D) system for lung cancer patients, comparing it to the traditional two-dimensional (2D) system.
  • - A total of 189 procedures were analyzed, with 105 using the 3D system and 84 with the 2D system. Results showed the 3D group had significantly shorter operation times and less intraoperative blood loss, including far fewer cases of severe hemorrhage.
  • - The findings suggest that the 3D endoscopic system could be a beneficial and safer alternative for cVATS lobectomy in lung cancer treatment.
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Hepatic pseudolymphoma is a very rare benign reactive lymphoid hyperplasia associated with autoimmunity and chronic inflammatory liver diseases such as primary biliary cirrhosis and may mimic hepatocellular carcinoma. This diagnosis should be suspected in female with a suspicious single tumor. Close monitoring is needed in view of its premalignant nature.

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Objectives: The present study was conducted to identify metabolites using a metabolomics approach and investigate the relationship between these metabolites and urgency as a major symptom of overactive bladder (OAB).

Patients And Methods: In 47 male participants without any apparent neurological disease, OAB was defined as an urgency score on the International Prostate Symptom Score of 2 and higher (OAB group, n = 26), while patients with a score of 1 or 0 were placed in a control group (n = 21). A comprehensive study on plasma metabolites was conducted, and metabolites were compared between the OAB and control groups.

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Article Synopsis
  • - The study aimed to analyze the connection between serum metabolites and nocturia in 66 males aged 65-80 by examining their micturition habits and measuring various symptoms and quality-of-life scores.
  • - Participants were divided into a nocturia group (45 men with ≥1.5 micturitions per night) and a control group (21 men with <1.5 micturitions per night), and their plasma metabolites were analyzed using advanced mass spectrometry techniques.
  • - Results indicated significant differences in eight metabolites between the groups, with factors like increased lauric acid and imidazolelactic acid linked to nocturia, suggesting that abnormal serum metabolite levels may contribute to the condition in older men
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MX-type one-dimensional complexes [Pt(amp)Br][Pt(amp)Br](HSO)(SO)·13HO (3) and [Pt(amp)Br][Pt(amp)Br](HPO)·8HO (4) were synthesized as the first analogue containing only an aromatic in-plane ligand. The Pt-Br chain structures of 3 and 4 are stabilized by both the hydrogen-bond network along the chain and the π-stacking via intercalated Pt(iv) complexes. Structural and spectroscopic studies indicated that both 3 and 4 form the Pt(ii/iv) mixed valence state.

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