Publications by authors named "Kurihara I"

Background: The spleen is a key organ in preventing pneumococcal infection, especially in patients with immunocompromised condition such as those with cancer. Previous studies have shown that a small spleen volume in pneumococcal pneumonia patients is associated with severe disease course. However, it is unknown whether a small spleen increases risk of pneumococcal infection.

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Aim: This study aimed to assess the impact of a physician-led intervention on advance care planning (ACP) introduction among older outpatients using a model discussion video.

Methods: This prospective interventional study included Japanese general practice outpatients aged ≥65 years. All participants received an ACP leaflet.

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Olfactory neuroblastomas rarely secrete adrenocorticotropic hormone, leading to ectopic adrenocorticotropic hormone syndrome. However, the prevalence, timing, and triggers of ectopic adrenocorticotropic hormone syndrome in patients with olfactory neuroblastomas remain unclear. This study aimed to investigate these factors and conduct a literature review.

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Background: The coronavirus disease 2019 (COVID-19) pandemic has put a strain on the healthcare system, and sudden changes in disease status during home treatment have become a serious issue. Therefore, prediction of disease severity and allocation of sufficient medical resources, including high-flow nasal cannula (HFNC), to patients in need are important. We aimed to determine risk factors for the need of HFNC use in COVID-19.

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Article Synopsis
  • The study developed a machine-learning algorithm to help diagnose aldosterone-producing adenoma (APA) using a comprehensive dataset from Japan, involving 41 healthcare centers and patients treated between 2006 and 2019.
  • An ensemble-learning model (ELM) was created by combining seven machine-learning programs, focusing on key predictive factors like serum potassium and aldosterone levels, achieving an impressive accuracy with AUC values of 0.899 for screening and 0.913 for confirmatory tests.
  • This algorithm aims to enhance APA diagnosis in primary care settings, ensuring patients with potentially treatable conditions are accurately identified and managed.
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In Japan, the standard method for measuring plasma aldosterone concentration (PAC) for primary aldosteronism (PA) diagnosis was changed from radioimmunoassay (RIA) to a novel chemiluminescent enzyme immunoassay (CLEIA). The purpose of this study is to simulate the possible impact of the change on PA diagnosis. This retrospective study assessed 2,289 PA patients.

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Hypertension is the definitive risk factor for cardiovascular disease. Primary aldosteronism (PA), a typical form of secondary hypertension, is responsible for treatment-resistant hypertension and carries an even higher risk of causing cardiovascular complications than essential hypertension. Several genes involved in the pathogenesis of hypertension have been identified recently using genome-wide association studies (GWASs).

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Background: 17α-hydroxylase deficiency (17OHD) is a rare autosomal recessive disorder. Aldosterone levels are usually low in patients with 17OHD. However, among the approximately 150 cases of 17OHD reported to date, aldosterone levels were not low in all cases.

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BACKGROUND Nephrotic syndrome caused by minimal mesangial lupus nephritis is considered rare. Nephrotic syndrome can be caused by minimal mesangial lupus nephritis with diffuse epithelial foot-process effacement and lupus podocytopathy. CASE REPORT A 23-year-old Japanese woman diagnosed with mixed connective tissue disease was admitted because of weight gain and generalized edema for 2 weeks prior to admission.

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This study investigated the mechanism underlying the beneficial effects of mineralocorticoid receptor (MR) antagonists in patients with resistant hypertension and diabetic nephropathy by examining post-translational modification of the MR by O-linked-N-acetylglucosamine (O-GlcNAc), which is strongly associated with type 2 diabetes. Coimmunoprecipitation assays in HEK293T cells showed that MR is a target of O-GlcNAc modification (O-GlcNAcylation). The expression levels and transcriptional activities of the receptor increased in parallel with its O-GlcNAcylation under high-glucose conditions.

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The incidence of atrial fibrillation (AF) and risk of cardiovascular events are reportedly higher in patients with primary aldosteronism (PA) than essential hypertension. However, associated factors of comorbid AF and cardiovascular events in PA patients after PA treatment remain unclear. This nationwide registration study included PA patients ≥20 years old.

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Purpose: The postoperative course of renal function remains unclear in Cushing syndrome. We examined changes in renal function after adrenalectomy in patients with Cushing syndrome and attempted to identify predictors of renal impairment.

Methods: The study population comprised 76 patients who underwent adrenalectomy for Cushing and subclinical Cushing syndrome between 2001 and 2018.

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Evaluation of feasibility and safety of percutaneous radiofrequency ablation using bipolar radiofrequency devices in a prospective multicenter cohort of patients with benign aldosterone-producing adenoma. A total of five institutions participated. CT-guided percutaneous RFA was performed for patients diagnosed as APA.

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Context: Adrenocorticotropin (ACTH) loading is used to increase the success rate of adrenal vein sampling (AVS).

Objective: We aimed to determine the effect of intraprocedural cortisol measurement (ICM) on ACTH-stimulated AVS (AS-AVS) owing to a lack of reliable data on this topic.

Methods: This multicenter, retrospective, observational study took place in 28 tertiary centers in Japan.

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A recent report stated that patients with primary aldosteronism who remain renin suppressed during mineralocorticoid receptor antagonist treatment might have a higher risk of developing cardiovascular disease than those with unsuppressed renin activity. We retrospectively investigated the incidence of composite cardiovascular disease and risk factors for cardiovascular disease in 1115 Japanese patients with primary aldosteronism treated with mineralocorticoid receptor antagonists. The median follow-up period was 3.

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Cases of subcutaneous abscess due to () infection are rare, even among immunocompromised patients. To our knowledge, there have only been eleven reports of such cases in adults, all of which presented with comorbidities of immunodeficiency, prior antibiotic administration, or skin breakdown following traumatic episodes or iatrogenic procedures. We report a rare case of a 42-year-old Japanese woman with a subcutaneous abscess due to  infection.

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Primary aldosteronism (PA) is associated with higher cardiovascular morbidity and mortality rates than essential hypertension. The Japan Endocrine Society (JES) has developed an updated guideline for PA, based on the evidence, especially from Japan. We should preferentially screen hypertensive patients with a high prevalence of PA with aldosterone to renin ratio ≥200 and plasma aldosterone concentrations (PAC) ≥60 pg/mL as a cut-off of positive results.

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Objective: In primary aldosteronism (PA), renal impairment has been identified as an important comorbidity. Excess cortisol production also may lead to renal damage; thus, concomitant mild autonomous cortisol secretion (MACS) may predispose PA patients to renal disorders. However, there is limited evidence to support this claim.

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Mineralocorticoid receptor (MR) and its ligand aldosterone play a central role in controlling blood pressure by promoting sodium reabsorption in the kidney. Coregulators are recruited to regulate the activation of steroid hormone receptors. In our previous study, we identified several new candidates for MR coregulators through liquid chromatography-tandem mass spectrometry analysis using a biochemical approach.

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BACKGROUND Nonocclusive mesenteric ischemia (NOMI) is a life-threatening disease. We present the first case to indicate an association between NOMI and renal infarction caused by renal artery vasoconstriction. CASE REPORT An 84-year-old Japanese man with no relevant past medical history was evaluated in the Emergency Department for disturbance of consciousness.

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We experienced a case with multiple arterial and venous thromboses associated with COVID-19. During this pandemic, physicians should consider COVID-19 in patients with unexplained thrombosis.

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Little is known regarding the association of blood pressure (BP) after treatment for primary aldosteronism (PA) (i.e., adrenalectomy and mineralocorticoid receptor antagonists) with long-term renal outcomes, and whether the association is independent of BP before treatment.

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In the era of a severely aging population, physicians should pay attention to look for both infective endocarditis and disseminated lesions when blood cultures reveal , especially in elderly people with valvular heart disease.

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A commutability confirmation test for the blood aldosterone measurement was performed on liquid chromatography-mass spectrometry/mass spectrometry (LC-MS/MS) as a designated comparison method (DCM) and four chemiluminescent enzyme immunoassay (CLEIA) measurement procedures based on metrological traceability. A conventional radioimmunoassay (RIA) and two measurement procedures of CLEIA which obtains RIA equivalent values were also compared. The relationship between the DCM value and the CLEIA value with respect to 120 pg/mL of the RIA value, which is the screening criterion of primary aldosteronism (PA) was clarified.

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