Publications by authors named "Noriyuki Tanaka"

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  • A study examined the prevalence of amyloid deposits in aortic valves from 97 patients undergoing valve replacement for aortic stenosis (AS), uncovering a significant association with junctional amyloid types.
  • Results indicated that 45% of the valves contained amyloid deposits, predominantly from transthyretin-type (ATTR) and amyloid derived from ApoAI (AApoAI), which may affect clinical outcomes.
  • The findings suggest that patients with amyloid deposition in the aortic valve exhibit earlier symptoms of AS despite maintaining preserved left ventricular function.
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  • Multiple PD-L1 immunohistochemistry assays (22C3, 28-8, SP142) are used to predict responses to immune therapies in advanced NSCLC, but their comparative effectiveness is not fully understood.
  • A study in Japan observed 70 advanced NSCLC patients treated with combined chemoimmunotherapy, assessing PD-L1 expression using all three assays.
  • Results indicated that the 22C3 assay was the most effective in predicting therapeutic response, showing significant differences in progression-free survival compared to the other assays, suggesting it may be key for clinical decision-making.
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  • EGFR tyrosine kinase inhibitors are commonly used for treating advanced NSCLC with EGFR mutations, but some patients experience primary resistance to these treatments, which may be linked to AXL protein expression.
  • A study involving autopsy samples and a patient-derived cell line showed that AXL mRNA levels varied by metastatic site and were negatively correlated with the effectiveness of the therapy combining erlotinib and ramucirumab.
  • The combination of EGFR inhibitors with an AXL inhibitor significantly improved treatment outcomes by reducing cell viability and increasing cell death compared to traditional therapies, indicating AXL's role in treatment resistance.
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  • Thymic hyperplasia with lymphoepithelial sialadenitis-like features involves thymic enlargement with immune cell infiltration, occurring mainly in older individuals and not linked to autoimmune diseases.
  • A case study described a 55-year-old man with this condition and a history of an IgG4-related disorder, highlighting the unique histological features found in his resected mediastinal mass.
  • Despite its typical disconnect from IgG4-related disorders, this case emphasizes the importance of considering this type of thymic hyperplasia in patients who have such conditions when diagnosing mediastinal masses.
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Background: Calcifying fibrous tumors (CFTs) are rare benign tumors. Because CFTs sometimes relapse, radical resection with adequate margins is necessary. We report a case of ileal CFT resected using single-port laparoscopic surgery.

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Background: Immunoglobulin G4-related disease (IgG4-RD) is a multi-organ disorder predominantly occurring in middle-aged to elderly male patients characterized by multi-organ fibrosis, specific pathological findings of storiform fibrosis with IgG4-positive plasma cell infiltration, and elevated serum IgG4 level. We herein report a rare presentation of IgG4-RD forming an isolated mass in the middle mediastinum mimicking a mediastinal tumor and discuss the clinical significance of mediastinal IgG4-RD.

Case Presentation: An 82-year-old male patient without any symptom was referred due to left middle mediastinal mass (3.

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Background: Cutting needles are thought to be effective as biopsy needles. A few types of cutting needles are available for endoscopic ultrasound-guided fine-needle aspiration (EUS-FNA), and the Menghini-type needle is an end-type cutting needle.

Aims: A prospective randomized controlled trial was conducted to compare the results of EUS-FNA using a Menghini-type needle (needle M) versus a conventional needle (needle S).

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Objectives: The pathological T descriptor of lung invasive mucinous adenocarcinoma (IMA) is currently defined according to mucin spread, whereas that of lung non-mucinous adenocarcinoma is defined according to invasive lesion. This study aimed to evaluate and compare the prognostic impact of mucin spread, tumor cell spread, and invasive lesion in patients with lung IMA.

Materials And Methods: Twenty-seven patients with completely resected pT1-4N0M0 IMA were evaluated.

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A female in her 40s was admitted with an abnormal shadow on chest X-ray. A chest computed tomography (CT) revealed an anterior mediastinal cystic mass with calcification. We suspected the tumor to be a teratoma, and surgery was performed.

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  • The study investigates the effectiveness of contrast-enhanced harmonic endoscopic ultrasound (CH-EUS) alongside time-intensity curve (TIC) analysis in diagnosing and grading pancreatic neuroendocrine neoplasms (PNEN).
  • In a sample of 30 patients, TIC parameters were analyzed to differentiate between lower-grade (G1/G2) and higher-grade (G3/NEC) tumors, with three specific parameters demonstrating very high diagnostic accuracy rates.
  • The findings suggest that CH-EUS and TIC analysis can accurately predict the grade of PNEN before surgery, providing valuable information for treatment planning.
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Background: Acne is one of the most common skin problems among human populations. A facial cleanser formulated with alkyl ether carboxylate (AEC) and alkyl carboxylate (AC) can improve acne by cleansing sebum on facial skin but cannot effectively remove keratotic plugs in the skin pores. Recently, we confirmed that Tris (hydroxymethyl) aminomethane and L-arginine (Tris/Arg) is able to reduce sebum levels, disrupt keratotic plugs in vitro and decrease pore size on facial skin.

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Background/aims: This study aimed to examine the diagnostic ability of endoscopic ultrasonography (EUS) for major vascular invasion in pancreatic cancer and to evaluate the relationship between EUS findings and pathological distance.

Methods: In total, 57 consecutive patients who underwent EUS for pancreatic cancer before surgery were retrospectively reviewed. EUS image findings were divided into four types according to the relationship between the tumor and major vessel (types 1 and 2: invasion, types 3 and 4: non-invasion).

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Background: Recently, therapeutic antibodies against programmed death-1/programmed death-ligand 1 (PD-1/PD-L1) have shown promising clinical results for several solid tumors, including pancreatic cancer. In this study, we evaluated the relationship between the PD-L1 expression of surgical resected and fine-needle aspiration (FNA) specimens for patients with pancreatic cancer.

Methods: Of 121 patients who underwent endoscopic ultrasound-guided (EUS)-FNA before surgery for pancreatic cancer in an academic center, the 94 (78%) with adequate FNA specimens for a histological evaluation were retrospectively analyzed.

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A 71-year-old female with non-dilated pancreaticobiliary maljunction (PBM) and gallbladder polypoid lesions underwent laparoscopic cholecystectomy. Histological examination of the polypoid lesions revealed gallbladder cancer. Five years after cholecystectomy, gradual dilatation of the main pancreatic duct (MPD) led to the identification of a papillary tumor growing in the MPD of the pancreatic head.

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Background: Freezing of gait (FOG) has been linked to increased numbers of steps taken while walking. We tested the hypothesis that an increased number of steps associated with FOG might predict the exacerbation of the severity of Parkinson's disease (PD).

Methods: We prospectively studied 26 patients.

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Segmental arterial mediolysis (SAM) is an uncommon, nonarteriosclerotic vascular disease. SAM is characterized by lysis of arterial media and can lead to aneurysm formation. The renal arteries are the third most common arteries associated with SAM.

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Endoscopic ultrasound-guided fine needle aspiration (EUS-FNA) is a standard procedure for precise histological diagnosis of pancreas tumors, but it is sometimes difficult to obtain adequate specimens. EUS Sonopsy CY® is a newly designed needle with original features. This randomized study will compare the tissue collection rate of EUS Sonopsy CY® to that of a conventional needle in EUS-FNA.

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Alternative splicing provides additional genomic complexity by producing multiple mRNAs and protein variants from any given gene. Splice variants have been identified in a large variety of cancer genes, suggesting that widespread aberrant and alternative splicing may be a consequence or even a cause of cancer. Human ortholog of mammalian enabled (hMena), a family of enabled/vasodilator-stimulated phosphoproteins (Ena/VASP), is an actin regulatory protein involved in the regulation of cell motility.

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Background: Recently, we evaluated factors responsible for falling, including walking speed evaluated with the use of originally designed, suddenly narrowed paths, in patients with Hoehn-Yahr stage III PD. We prospectively studied the same cohort of patients with PD who were followed up for 2 years, to determine predictors of future falls.

Methods: We performed clinical assessments and evaluated balance in 26 patients.

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We propose a method to visualize the arterial inflow, the vascular resistance, and the venous capacitance in the skin tissue from red, green, blue (RGB) digital color images. The arterial inflow and the venous capacitance in the skin tissue are visualized based on an increase in the rate of change in the total blood concentration and the change of the total blood concentration during upper limb occlusion at a pressure of 50 mmHg. The resultant arterial inflow with the measured mean arterial pressure also provides an image of the vascular resistance in human skin.

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Background: Previous studies have proposed that higher blood pressure (BP) in winter is an important cause of increased mortality from cardiovascular disease during the winter. Some observational and physiological studies have shown that cold exposure increases BP, but evidence from a randomised controlled study assessing the effectiveness of intensive room heating for lowering BP was lacking.

Objectives: The present study aimed to determine whether intensive room heating in winter decreases ambulatory BP as compared with weak room heating resulting in a 10°C lower target room temperature when sufficient clothing and bedclothes are available.

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We propose a method to visualize the arterial inflow, the vascular resistance, and the venous capacitance in the skin tissue from red, green, blue (RGB) digital color images. The arterial inflow and the venous capacitance in the skin tissue are visualized based on an increase in the rate of change in the total blood concentration and the change of the total blood concentration during upper limb occlusion at a pressure of 50 mmHg. The resultant arterial inflow with the measured mean arterial pressure also provides an image of the vascular resistance in human skin.

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