Publications by authors named "Nakajima J"

Background: The guidelines recommend anticoagulation management with uninterrupted warfarin or direct thrombin inhibitors (DTIs) during the atrial fibrillation (AF) ablation periprocedural period.

Objectives: To clarify the Japanese real-world latest periprocedural anticoagulation management during AF ablation.

Methods: This multicenter observational study included 6232 consecutive AF patients (68.

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Background: This study was designed to evaluate the long-term durability, oxygenation, and pressure loss of newly developed, methacryloyloxyethyl phosphorylcholine (MPC)-polymer-coated, nonporous silicone hollow fiber-membrane lungs in vivo using a pulmonary artery-to-left-atrium paracorporeal configuration.

Methods: An extracorporeal circuit from the pulmonary artery (device inflow) to the left atrium (device outflow) was established using dedicated composite vascular grafts in three healthy female goats for the prototype lung testing.

Results: Duration of testing the prototype lungs was 52, 57, or 100 days.

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Background: Primary lung cancer arising in a transplanted lung is much rarer than cancer arising in a native lung. We herein describe a case of lung cancer developing in a transplanted lung after single-lung transplantation. Wedge resection was safely and successfully completed using venovenous extracorporeal membrane oxygenation (VV-ECMO).

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  • The study explores how respiratory sarcopenia, or reduced respiratory muscle strength, can help improve risk assessment for patients undergoing surgery for non-small cell lung cancer (NSCLC).
  • Researchers analyzed data from 806 patients in Tokyo who had surgical treatment for NSCLC between 2009 and 2018, focusing on outcomes based on their levels of respiratory strength and muscle mass.
  • Findings indicate that respiratory strength is a better predictor of patient outcomes than the traditional metric of muscle radiodensity, suggesting that factoring in respiratory sarcopenia could enhance postoperative care strategies.
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Asteraceae is highly diverse in the Atlantic Forest, especially in montane environments. The early-diverging tribes within Asteraceae are of particular interest because of their great representation in Brazil and unique features within the family. Thus, a floristic inventory and systematic treatment of these basal grade in Caparaó National Park, an important remnant of Atlantic Forest that has been highlighted for its diversity and endemism, were undertaken.

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  • A 41-year-old man discovered a 5.1 cm cystic tumor and a 2.0 cm nodule in his chest via CT scan, leading to concerns of a malignant teratoma and lymph node spread.
  • He underwent surgery where the tumor and affected tissues were fully removed, revealing a mature cystic teratoma and a small thymoma.
  • Post-surgery, he had an uncomplicated recovery and showed no signs of recurrence after 30 months, highlighting the rare occurrence of both a teratoma and a thymoma.
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  • This study investigated the relationship between clinical inflammatory markers and the dosage of unfractionated heparin (UFH) needed during lung transplants using veno-arterial ECMO.
  • Out of 27 patients studied, those who required an increased UFH dosage had significantly lower activated clotting time (ACT) and higher white blood cell (WBC) counts shortly after starting ECMO.
  • The findings suggest that higher WBC counts may indicate the need to raise UFH dosages, but further research is needed to better understand this relationship.
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  • The study investigates the role of HER2 in endometrial carcinoma, particularly focusing on its expression in different cancer types and the implications for treatment, as conventional anti-HER2 therapies are not typically used for this cancer.
  • Out of 530 patients, 124 (23%) had HER2-positive tumors, with over half displaying low HER2 expression, and a significant association was found between HER2 positivity and poorer outcomes in terms of progression-free survival (PFS) and overall survival (OS).
  • The findings suggest that HER2-targeted therapies could be beneficial for endometrial carcinoma patients, especially those with co-expression of HER2 and p53 aberrations, which serves as an independent prognostic marker for worse
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Hematopoietic stem cell transplants for inherited metabolic disorders performed at Tokai University Hospital between June 5, 1986, and May 28, 2021, were analyzed and compared between the period before 2007 and the period from 2007 onward based on availability of medical resources. Transplants were performed for 38 patients with mucopolysaccharidosis, 33 with adrenoleukodystrophy, and 16 with another disorder. Before 2007, oral busulfan-based regimens were mainly used.

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  • Pneumothorax, a serious condition that can occur as a complication of septic pulmonary embolism (SPE), involves air leaking into the pleural space and can lead to severe respiratory issues.
  • A case study of a 72-year-old man with esophageal carcinoma showed that he developed bilateral pneumothorax due to SPE from bacteremia, leading to continuous air leakage despite chest tube drainage.
  • The patient was treated with intrapleural minocycline pleurodesis to prevent recurrence after the initial drainage, which proved effective as he did not experience pneumothorax again, even though he ultimately succumbed to his cancer one month later.
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Asteraceae is the world's richest plant family and is found on all continents, in environments ranging from the coast to the highest mountains. The family shows all growth forms and, as in other angiosperm families, species richness is concentrated in tropical regions. South America has the highest diversity of Asteraceae in the world, yet taxonomic and distributional knowledge gaps remain.

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For the practical application of fuel cells in vehicles, it is a challenge to develop a proton solid electrolyte that coexhibits thermal stability and high proton conductivity at wide intermediate temperatures. Here, we report on the tunnel structured phosphate KNiH(PO)HO, which exhibits high proton conductivity at room temperature up to 500 °C, with the conductivity value reaching 1.7 × 10 S cm at 275 °C for = 0.

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Macrophages contribute to post-transplant lung rejection. Disulfiram (DSF), an anti-alcoholic drug, has an anti-inflammatory effect and regulates macrophage chemotactic activity. Here, we investigated DSF efficacy in suppressing acute rejection post-lung transplantation.

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A man in his 50s was stabbed deeply in the back with a knife and brought to the emergency room. He was found to have a significant left hemopneumothorax. He was planned to undergo hemostatic surgery under general anesthesia.

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Purpose: To investigate how revision of the organ transplant law in Japan affected lung transplantation in this country.

Methods: Lung transplant candidates registered between January, 2000 and December, 2009 were designated as the pre-revision group (n = 396) and those registered between January, 2011 and December, 2020, as the post-revision group (n = 1326). Both groups were analyzed retrospectively using data collected by the Japanese Society of Lung and Heart-Lung Transplantation.

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Introduction: The goal of surgical resection is to completely remove a cancer; it is useful to have a system to describe how well this was accomplished. This is captured by the residual tumor (R) classification, which is separate from the TNM classification that describes the anatomic extent of a cancer independent of treatment. The traditional R-classification designates as R0 a complete resection, as R1 a macroscopically complete resection but with microscopic tumor at the surgical margin, and as R2 a resection that leaves gross tumor behind.

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Introduction: Recent studies have reported the efficacy of the cryoballoon (CB)-guided left atrial roof block line (LARB) creation in patients with persistent atrial fibrillation (AF). However, it can be technically challenging to attach the balloon to the left atrial (LA) roof due to its anatomical variations. We designed a new procedure called the "Raise-up Technique," which may facilitate the firm adhesion of the CB to the LA roof during freezing.

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  • A review of lung transplantation (LT) data from 2000 to 2021 in Japan was conducted to evaluate the impact of case volume on patient outcomes at different LT facilities.
  • Nine institutions were divided into low-volume (LV) and high-volume (HV) centers, with differing numbers of LT cases performed.
  • Results showed no significant difference in short- or long-term survival rates between HV and LV centers, although LV centers exhibited more variability in their long-term outcomes.
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Background: Whether comprehensive risk assessment predicts post-referral outcome in patients with pulmonary arterial hypertension (PAH) referred for lung transplantation (LT) in Japan is unknown.

Methods And Results: We retrospectively analyzed 52 PAH patients referred for LT. Risk status at referral was assessed using 3- and 4-strata models from the 2022 European Society of Cardiology and European Respiratory Society guidelines.

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  • This study evaluated the synthetic cannabinoids NPB-22, Adamantyl-THPINACA, and CUMYL-4CN-B7AICA for their activities at cannabinoid receptors (CB1 and CB2) and their effects when inhaled, similar to smoking.
  • Using binding assays and inhalation exposure tests on mice, the researchers measured the potency and biological effects of the cannabinoids, identifying the thermal degradation of their components when combusted.
  • The results indicated that while NPB-22 and Adamantyl-THPINACA had similar CB activity in lab tests, NPB-22 exhibited weaker biological effects in inhalation tests due to thermal degradation, resulting in byproducts that lacked cannabinoid activity.
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  • A new genus and species called Nagisavelia hikarui was discovered in Japan's rocky intertidal beaches.
  • The study includes a comparison of this new genus with the other 10 existing genera in the Mesoveliinae subfamily.
  • Additionally, the research provides a character matrix for identifying eight genera and a key for identifying the seven Mesoveliidae species found in Japan.
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Adenylation enzymes activate amino acid substrates to aminoacyl adenylates and generally transfer this moiety onto the thiol group of the phosphopantetheine arm of a carrier protein for the selective incorporation of aminoacyl building blocks in natural product biosynthesis. In contrast to the canonical thioester-forming adenylation enzymes, the amide-forming adenylation enzyme VinM transfers an l-alanyl group onto the amino group of the aminoacyl unit attached to the phosphopantetheine arm of the carrier protein VinL to generate dipeptidyl-VinL in vicenistatin biosynthesis. It is unclear how VinM distinguishes aminoacyl-VinL from VinL for amide bond formation.

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Background: A left atrial posterior wall isolation (LAPWI) is one of the atrial fibrillation (AF) ablation strategies.

Hypothesis: We hypothesized that an additional empirical LAPWI would increase the freedom from recurrent atrial arrhythmias as compared to standard AF ablation in persistent AF patients.

Methods: The CORNERSTONE AF study is a prospective, randomized, multicenter study investigating patients with AF persisting for >7 days and <3 years undergoing first-time AF ablation.

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A man in his 40s was diagnosed with interstitial pneumonia at another hospital. He was referred to our hospital for lung transplantation. His lung function was rapidly declining, necessitating semiurgent living-donor lobar lung transplantation (LDLLT).

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