Yoshikatsu Matsumura

Nippon Medical School, Edo, Tokyo, Japan

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Publications (3)3.54 Total impact

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    ABSTRACT: Objective: The aim of this study was to examine the effects of a newly established neonatal intensive care unit (NICU) on clinical work practice and educational activity at Nippon Medical School Musashikosugi Hospital. Methods: This retrospective study analyzed the clinical records of all neonates admitted to the NICU from December 2010 through November 2013. Anthropometric data, clinical status, problems, and outcomes of patients and the related obstetrical history were extracted and analyzed. Results: Of the 568 neonatal admissions, about half were related to preterm birth (49%) and low birth weight (55%). Forty-eight percent of patients were born via caesarean delivery. Maternal hypertension, diabetes, and thyroid disease were found in 8%, 5%, and 2% of cases, respectively. Mechanical ventilatory support was provided for 20% of patients. Neonates from multiple pregnancy and with significant congenital anomalies accounted for 17% and 10% of all patients, respectively. Five patients died during hospitalization. In addition training was provided in the NICU for an average of 10 residents and 20 medical students per year. Conclusion: Since the NICU was established, closer cooperation beyond the framework of a single department has come to be needed. In addition, NICUs in teaching hospitals are expected to provide opportunities for medical students and residents to observe and participate in multidisciplinary medical care.
    Journal of Nippon Medical School 11/2014; 81(5):328-32. DOI:10.1272/jnms.81.328 · 0.58 Impact Factor
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    ABSTRACT: Idiopathic intrauterine constriction/closure of the ductus arteriosus, which is distinct from that secondary to maternal exposure to non-steroidal anti-inflammatory drugs, such as indomethacin, or structural cardiac defect, is an uncommon event that often results in severe fetal-neonatal morbidity and mortality. We reported a case of idiopathic fetal ductal constriction, in which the diagnosis was confirmed by documentation of an abnormal four-chamber view of the fetal heart at 38 weeks of gestation on obstetric ultrasound examination. A female infant weighing 2,816 g was born by Cesarean section, and her postnatal course was mild; transient tachypnea requiring only several days of supplemental oxygen with spontaneous regression of the abnormal echocardiographic findings by 3 months of age. The incidence of idiopathic constriction/closure of the fetal ductus arteriosus may be underestimated, particularly with a negative history of maternal drug exposure and mild postnatal clinical presentation.
    European Journal of Pediatrics 02/2011; 170(2):237-40. DOI:10.1007/s00431-010-1295-3 · 1.89 Impact Factor
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    ABSTRACT: To investigate the effect of serum on the interaction between natural killer (NK) cells and endothelial cells in pre-eclampsia. Seven severely pre-eclamptic patients, five normal pregnant women, and four normal non-pregnant women were included in this study. Freshly isolated NK cells labeled with Chromium-51 were incubated on an endothelial cell monolayer in the presence of patient serum. In regard to the characteristics of adhesive molecules, the endothelial cells were blocked by monoclonal antibodies (mAbs) to intracellular adhesion molecule-1 (ICAM-1), vascular cell adhesion molecule-1 (VCAM-1); the NK cells were blocked by mAbs to leukocyte function-associated antigen (LFA-1) and very late antigen-4 (VLA-4) before co-incubation. After incubation, the adherent cells were solubilized with 1% Triton X. The lysates were collected and counted in a gamma counter. The adhesion of NK cells to the endothelium in the normal pregnancy group decreased significantly in comparison to the non-pregnant group (7%vs 72%; P < 0.01). Adhesion in the severe pre-eclamptic group was significantly higher in comparison to the normal pregnant group (44%vs 7%; P < 0.01). The blocking percentages of mAbs on NK adhesion in the severe pre-eclampsia group were 49 +/- 4% to LFA-1, 61 +/- 48%, 67 +/- 39% to VLA-4, ICAM-1, and 68 +/- 7% to VCAM-1. Sera from normal pregnant women suppress the adhesion between NK cells and endothelial cells, whereas the suppressive effect of sera from pre-eclamptic patients has a diminished affect.
    Journal of Obstetrics and Gynaecology Research 11/2006; 32(5):443-8. DOI:10.1111/j.1447-0756.2006.00444.x · 1.07 Impact Factor