Publications by authors named "Sakamoto G"

We report that ~1.8% of all mesothelioma patients and 4.9% of those younger than 55, carry rare germline variants of the BRCA1 associated RING domain 1 ( gene that were predicted to be damaging by computational analyses.

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  • A 71-year-old woman with no significant medical history suffered cardiopulmonary arrest due to extensive heart damage and was treated with veno-arterial extracorporeal life support (ECLS) and an Impella CP® device to support her heart and organs.
  • The use of a large-bore sheath for these devices can lead to complications like limb ischemia, as it disrupts blood flow in the leg.
  • A new technique is introduced that involves creating an external bypass to restore proper blood flow to the affected limb while using the Impella device.
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  • Functional mitral regurgitation (FMR) is common in patients with atrial fibrillation (AF) and can worsen heart failure (HF), prompting a study of its effects on catheter ablation outcomes in HF patients.
  • In a study of 280 patients with HF and nonparoxysmal AF, FMR cases decreased significantly from 54.6% at baseline to 25% after one year following ablation, with many experiencing a reduction in severity.
  • Most patients (97.9%) maintained sinus rhythm after a year, and those with improved FMR showed better cardiac parameters compared to those without improvement, indicating a positive feedback loop for heart function after ablation.
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Purpose: Dynamic chest radiography allows for non-invasive cardiopulmonary blood flow assessment. However, data on its use for heart failure hemodynamic assessment are scarce. We utilized dynamic chest radiography to estimate heart failure hemodynamics.

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is a powerful tumor suppressor gene characterized by haplo insufficiency. Individuals carrying germline mutations often develop mesothelioma, an aggressive malignancy of the serosal layers covering the lungs, pericardium, and abdominal cavity. Intriguingly, mesotheliomas developing in carriers of germline mutations are less aggressive, and these patients have significantly improved survival.

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  • The study investigated the effects of excimer laser coronary angioplasty (ELCA) versus manual aspiration thrombectomy on patients with acute myocardial infarction (MI), specifically ST-segment elevation MI (STEMI).
  • A total of 143 patients were analyzed, showing a significant difference in peak CK-MB levels, with lower levels in the ELCA group compared to the aspiration group.
  • While both methods showed similar results for myocardial salvage, ELCA led to better improvements in left ventricular systolic function, evidenced by higher ejection fraction and peak emptying rate.
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  • The study investigates the relationship between atrial defibrillation threshold (ADFT) and the recurrence of atrial tachyarrhythmia in patients undergoing catheter ablation for non-paroxysmal atrial fibrillation (AF).
  • A total of 368 patients were categorized into low ADFT (<20 J) and high ADFT (≥20 J) groups, revealing that the high ADFT group had a significantly higher rate of AF recurrence (30.6% vs. 16.7%) over a 2.6-year follow-up period.
  • The findings suggest that a high ADFT is a notable risk factor for AF recurrence specifically in patients with long-standing persistent AF, while it does not
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Carriers of heterozygous germline mutations () are affected by the "BAP1 cancer syndrome." Although they can develop almost any cancer type, they are unusually susceptible to asbestos carcinogenesis and mesothelioma. Here we investigate why among all carcinogens, mutations cooperate with asbestos.

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Limited data exist on the prevalence and prognosis of isolated posterior ST-segment elevation acute myocardial infarction (STEMI), revealed with a posterior chest lead. Furthermore, the utility of a synthesized-V lead in the diagnosis of STEMI is unclear; therefore, we aimed to evaluate its usefulness. We enrolled 142 consecutive patients with STEMI with the culprit lesion on the left circumflex artery (STEMI-LCx) undergoing percutaneous coronary intervention (PCI) between January 2009 and December 2019.

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Low body mass index (BMI) is a predictor of adverse events in patients with ST-elevated myocardial infarction (STEMI) in Western countries. Because the average BMI of Asians is significantly lower than that of the Western population, the appropriate cut-off BMI value and its role in long-term mortality are unclear in Asian patients. Between January 2006 and December 2017, 1215 patients who underwent percutaneous coronary intervention (PCI) for acute STEMI and were alive at discharge (mean age, 67.

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Objective: To clarify the association of detailed angiographic findings with in-hospital outcome after primary percutaneous coronary intervention (p-PCI) for ST-elevation myocardial infarction (STEMI) in Japan.

Background: Data regarding the association of detailed angiographic findings with in-hospital outcome after STEMI are limited in the p-PCI era.

Methods: Between January-2004 and December-2018, 1735 patients with STEMI (mean age, 68.

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Background: Although short-term mortality in ST-elevation myocardial infarction (STEMI) has improved, data is limited regarding very long-term mortality and concomitant clinical events in STEMI survivors who undergo primary percutaneous coronary intervention (p-PCI). This study aimed to evaluate these parameters at 15 years and to determine the predictors of 15-year mortality in these patients.

Methods: The study endpoints were all-cause mortality and cardiac mortality at 15 years.

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Knowledge of the long-term prognosis (>10 years) and mortality predictors of ST-elevation myocardial infarction (STEMI) patients who have undergone primary percutaneous coronary intervention (p-PCI) is scarce. Therefore, this study evaluated the long-term prognosis and determined the predictors of long-term outcomes for STEMI patients after p-PCI. Between January, 2006 and December, 2010, we collected data and analyzed 459 consecutive patients with acute STEMI who underwent p-PCI and were discharged from the hospital (mean age, 66.

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Aims: We aimed to examine the benefits of catheter ablation in patients with non-paroxysmal atrial fibrillation (AF) accompanied by heart failure (HF) with preserved ejection fraction (HFpEF), in comparison with the benefits in patients with AF accompanied by HF with reduced ejection fraction (HFrEF) or patients with no HF.

Methods And Results: From 1173 consecutive patients undergoing catheter ablation, 502 with non-paroxysmal AF were divided into three groups: no history of HF [plasma B-type natriuretic peptide (BNP) <100 pg/mL and no HF hospitalization; n = 125], HFpEF [left ventricular (LV) EF ≥50%; n = 293], and HF with midrange EF (HFmrEF) + HFrEF (LVEF <50%; n = 84) groups. The endpoints were AF recurrence at 1 year, changes in symptomatic and image-based functional status, and changes in BNP levels from baseline to 1 year.

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Objective The popularity of primary percutaneous coronary intervention (p-PCI) for ST-elevation myocardial infarction (STEMI) has increased over the past decades. Despite improvements in in-hospital mortality rates, it is clinically important to investigate the prognoses after discharge. However, data on the mode of death and prognostic factors are limited.

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Psychological stresses such as social loss and separation during childhood induce hardship, referred to as emotional pain. These experiences are well-documented risk factors for the development of physical pain in adulthood. However, the underlying neuronal mechanisms of this exacerbation of pain are largely unknown, and consequently there is no effective pharmacotherapy.

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Carriers of heterozygous germline BAP1 mutations (BAP1) develop cancer. We studied plasma from 16 BAP1 individuals from 2 families carrying different germline BAP1 mutations and 30 BAP1 wild-type (BAP1) controls from these same families. Plasma samples were analyzed by liquid chromatography time-of-flight mass spectrometry (LC-TOF-MS), ultra-performance liquid chromatography triple quadrupole mass spectrometry (UPLC-TQ-MS), and gas chromatography time-of-flight mass spectrometry (GC-TOF-MS).

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BRCA1-associated protein 1 (BAP1) is a potent tumour suppressor gene that modulates environmental carcinogenesis. All carriers of inherited heterozygous germline BAP1-inactivating mutations (BAP1) developed one and often several BAP1 malignancies in their lifetime, mostly malignant mesothelioma, uveal melanoma, and so on. Moreover, BAP1-acquired biallelic mutations are frequent in human cancers.

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Objective: For multisession radiosurgery, no published data relate the volume and dose of cochlear irradiation to quantified risk of hearing loss. We conducted a retrospective, dosimetric study to evaluate the relationship between hearing loss after stereotactic radiosurgery (SRS) and the dose-volume of irradiated cochlea.

Methods: Cochlear dose data were retrospectively collected on consecutive patients who underwent SRS (18 Gy in 3 sessions) for vestibular schwannoma between 1999 and 2005 at Stanford University Hospital.

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Neuroendocrine ductal carcinoma in situ (NE-DCIS) is a breast malignancy that has characteristic clinicopathological features and can, therefore, be regarded as a distinct variant of DCIS. The patient was a 54-year-old premenopausal woman with hemorrhagic nipple discharge in her left breast. Magnetic resonance imaging and ultrasound (US) images of the left breast showed mass-like lesions, while concurrent images of the right breast showed non-mass-like lesions.

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Background: Single-session stereotactic radiosurgery (SRS) treatment of vestibular schwannomas results in excellent tumor control. It is not known whether functional outcomes can be improved by fractionating the treatment over multiple sessions.

Objective: To examine tumor control and complication rates after multisession SRS.

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Background: Surgical resection of nonvestibular cranial schwannomas carries a considerable risk of postoperative complications. Stereotactic radiosurgery (SRS) offers a non-invasive treatment alternative. The efficacy and safety of multi-session SRS of nonvestibular cranial schwannomas has not been well studied.

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