Publications by authors named "Miyazato M"

Article Synopsis
  • A 36-year-old man experienced severe abdominal pain after eating raw fish, leading to a CT scan which indicated thickening of the gastric wall, raising suspicion for gastric anisakiasis.
  • The endoscopy confirmed the presence of three Anisakis larvae in the gastric wall, which were successfully removed, alleviating the man's symptoms.
  • Anisakiasis is an increasing global concern caused by consuming undercooked seafood; awareness among healthcare providers and proper seafood preparation is essential for prevention.
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An 82-year-old woman presented with painless hematochezia. Colonoscopy revealed a submucosal tumor-like mass in the cecum. The appendiceal orifice was identified in the center of the prominence, showing the volcano sign.

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Article Synopsis
  • Pelvic organ prolapse (POP) affects around 40% of older women, causing pelvic organs to descend into the vaginal cavity.
  • A genome-wide association study (GWAS) involving 771 cases and 76,625 controls in Japan found a significant link between the WT1 gene locus and POP susceptibility.
  • A combined analysis of Japanese and European data identified FGFR2 as a new susceptibility locus for POP, and most susceptibility genes were found to be shared between the Japanese and European populations.
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Internal thoracic artery (ITA) injuries associated with sternal fractures can lead to shock. Several studies have documented injuries resulting in hemorrhagic shock, yet there is limited reporting on obstructive shock. Opinions differ regarding which is superior between transcatheter arterial embolization (TAE) and open thoracotomy.

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Purpose: To investigate the effects of low-intensity extracorporeal shock wave therapy (LiESWT) on bladder and urethral dysfunction with detrusor overactivity and detrusor sphincter dyssynergia (DSD) resulting from spinal cord injury (SCI).

Methods: At 3 weeks after Th9 spinal cord transection, LiESWT was performed on the bladder and urethra of adult female Sprague Dawley rats with 300 shots of 2 Hz and an energy flux density of 0.12 mJ/mm, repeated four times every 3 days, totaling 1200 shots.

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Neuromedin U (NMU) activates two types of receptors (NMUR1 and NMUR2), and the former is mainly expressed in the peripheral tissues, including the intestinal tract and lung tissues. Since NMUR1 contributes to the promotion of type 2 inflammation in these tissues, it is a potential target to suppress inflammatory responses. However, promising antagonist candidates for human NMUR1 have not yet been developed.

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Aim: The present cohort study explored whether specific gut microbiota (GM) profile would predict the development of impaired glucose tolerance (IGT) in individuals with normal glucose tolerance (NGT).

Methods: A total of 114 study subjects with NGT in Kumejima island, Japan participated in the present study and underwent 75 g oral glucose tolerance tests at baseline and one year later. We compared the profile of GM at baseline between individuals who consistently maintained NGT (NRN, n = 108) and those who transitioned from NGT to IGT (NTI, n = 6).

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Ghrelin is a peptide hormone with various important physiological functions. The unique feature of ghrelin is its serine 3 acyl-modification, which is essential for ghrelin activity. The major form of ghrelin is modified with n-octanoic acid (C8:0) by ghrelin O-acyltransferase.

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A 73-year-old man was admitted with four weeks of intermittent fever. He had a history of total aortic arch replacement for aortic arch aneurysm four years prior. CT scans showed no abnormalities before admission.

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Purpose: To compared the vessel density (VD) around the optic nerve head (ONH) in eyes with cone-rod dystrophy (CORD) and healthy control eyes in a sector-wise manner and to investigate the relationship between VD around the ONH and visual function in CORD eyes.

Methods: Twenty-six eyes in 14 CORD patients and 25 eyes in 25 healthy control subjects were examined. Using OCT angiography images, the VDs in the superficial and deep capillary plexus at the macula (sVDm and dVDm) and those around the ONH in the superior, temporal, inferior and nasal region (VDnh_s, VDnh_t, VDnh_i, and VDnh_n, respectively) were measured for each eye.

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Mice with endothelial-cell-specific overexpression of C-type natriuretic peptide (E-CNP Tg mice) were shown to be protected against hepatic fibrosis and inflammation induced by high fat diet (HFD) feeding, with improved insulin sensitivity and attenuated weight gain. A recently developed high-fat, high-fructose, high-cholesterol diet (HFFCD) is considered to be a superior model to HFD, owing to the resemblance to human non-alcoholic steatohepatitis (NASH). In this study, we therefore aimed to reveal whether these previous findings with E-CNP Tg mice on HFD can be observed in a newly developed NASH model.

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Our current study aimed to investigate the association of preoperative OCT parameters with visual function after vitrectomy surgery in eyes with epiretinal membrane (ERM). This study enrolled 33 eyes with ERM that underwent vitrectomy surgery. In addition to visual acuity (VA), metamorphopsia was measured pre- and postoperatively for each eye.

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Purpose: To investigate the effect of low-intensity extracorporeal shock wave therapy (LiESWT) on lipopolysaccharide (LPS)-induced cystitis in an animal model of interstitial cystitis/bladder pain syndrome (IC/BPS).

Methods: Sprague-Dawley rats were divided into three groups: control, cystitis (LPS group, intravesical injection of LPS (1 mg) twice), and cystitis with LiESWT (LiESWT group). On the third and fourth days, LiESWT was administered (0.

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Acute iron overload is known to exert deleterious effects in the liver, but detailed pathology has yet to be documented. Here, we report pathological findings in an autopsy case of acute iron toxicity and validation of the findings in mouse experiments. In a 39-year-old woman who intentionally ingested a large amount of sodium ferrous citrate (equivalent to 7.

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Aims/introduction: Glucagon, a peptide hormone produced from proglucagon, is involved in the pathophysiology of diabetes. Plasma glucagon levels are currently measured by sandwich enzyme-linked immunosorbent assay (ELISA), but the currently used sandwich ELISA cross-reacts with proglucagon-derived peptides, thereby providing incorrect results in subjects with elevated plasma proglucagon-derived peptide levels. We aimed to develop a more broadly reliable ELISA for measuring plasma glucagon levels.

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Background: This study investigated the association between placental pathology and fetal heart failure.

Methods and results: Singletons with a congenital heart defect (CHD) and/or arrhythmia (n=168) and gestational age-matched controls (n=52) were included in the study. The associations between macro- and microscopic abnormal findings of the placenta and the severity of fetal heart failure were evaluated using the cardiovascular profile (CVP) score.

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Numerous studies have revealed distinct differences in the profiles of gut microbiota between non-obese and obese individuals. To date, however, little is known if any disparities in the community of gut microbiota exist between metabolically healthy obese (MHO) and metabolically unhealthy obese (MUO) subjects. We therefore aimed to comprehensively characterize the gut microbiota and circulating metabolites in serum from both MHO and MUO residing in the remote island, Kumejima, where the prevalence of obesity is one of the highest in Japan, and explored possible correlations between the gut microbiota profile and markers of metabolic syndrome.

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Aims: We investigated the changes in bladder and urethral function after cerebral infarction (CI) and the influence of tramadol on these functions.

Methods: Twenty-eight female Sprague Dawley rats were divided into normal and CI groups. In the awake condition, metabolic cage study and blood pressure were evaluated.

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Background: We evaluated the significance of perinatal plasma natriuretic peptide (NP) levels in neonates with congenital heart defects (CHDs) or arrhythmias and determined whether measurement of perinatal plasma NP levels and echocardiographic assessment in utero could predict heart failure after birth.

Methods: The study was conducted between 2012 and 2016 to evaluate the correlation of perinatal atrial NP (ANP) and brain NP (BNP) levels at birth with the modified Ross score after birth and the cardiovascular profile (CVP) score before birth.

Results: A total of 122 singletons with CHDs or arrhythmias and 27 controls were analyzed.

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(1) Background: Evidence has accumulated regarding the etiology of lower urinary tract symptoms associated with obesity and metabolic syndrome. Therefore, the present study aimed to identify which subjectively and objectively measured voiding parameters were associated with obesity in a community-based population. (2) Methods: Voiding parameters on a self-administered questionnaire and a digital self-health monitoring system for urine excretion (s-HMSU) were compared between participants with and without obesity, defined as a body mass index ≥ 25 kg/m2 (n = 30 and 29, respectively), from a community in Okinawa, Japan.

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Article Synopsis
  • ANP (atrial natriuretic peptide) lowers blood pressure primarily through its action on NPR1 (natriuretic peptide receptor 1), but the specific mechanisms behind this effect are not fully understood.
  • Research shows that NPR1 is highly present in endothelial and smooth muscle cells of small arteries, and that ANP effectively reduces systolic blood pressure in normal mice and certain knockout mice, with a notable difference depending on the type of cell targeted.
  • The study concludes that NPR1 in vascular endothelial cells is essential for ANP's blood pressure-lowering effects, with the process involving different mechanisms that depend on RGS2 during acute responses and are RGS2-independent during chronic responses.
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