Publications by authors named "Maki Hyodo"

Purpose: This study aimed to investigate whether vitamin K (menatetrenone) suppresses bone mineral density (BMD) loss in the irradiated region after radiotherapy (RT) in uterine cancer patients.

Materials And Methods: Our study included 34 patients who underwent whole pelvic irradiation for uterine cancer between 2001 and 2010. The patients were categorized in two groups: (1) Vitamin K (45 mg/day) administration group (group A) with 18 cases and (2) non-administered group (group B) with 16 cases.

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The management of secondary findings (SFs), which are beyond the intended purpose of the analysis, from clinical comprehensive genomic analysis using next generation sequencing (NGS) presents challenges. Policy statements regarding their clinical management have been announced in Japan and other countries. In Japan, however, the current status of and attitudes of clinical genetics professionals toward reporting them are unclear.

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Genome editing of the human embryo using CRISPR/Cas9 has the potential to prevent hereditary diseases from being transmitted to the next generation. However, attitudes to this technology have not been examined sufficiently among the genetic professionals who will use it in the near future. We conducted a questionnaire survey of Japanese clinical geneticists and certified genetic counselors.

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Article Synopsis
  • A study was conducted to understand why some noninvasive prenatal tests (NIPT) yield nonreportable results by looking at maternal characteristics and related details.
  • Out of 34,626 pregnant women tested, 110 (0.32%) had nonreportable cfDNA results, primarily due to low fetal fraction or altered genomic profiles.
  • The research highlights the importance of classifying nonreportable results to offer clearer information and lessen anxiety for expecting mothers.
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  • - The study aimed to evaluate how fetal fractions in non-invasive prenatal testing (NIPT) can help predict pregnancy complications like gestational diabetes and hypertension by comparing results from different gestational ages and maternal characteristics.
  • - Conducted as a multicenter cohort study, it analyzed data from 5,582 women with negative NIPT results to explore the links between fetal fractions and pregnancy outcomes such as miscarriages and complications.
  • - Results indicated that women who developed hypertensive disorders tended to have lower fetal fractions early in pregnancy, but using this marker to predict such conditions proved challenging.
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Viruses that are typically benign sometimes invade the brainstem in otherwise healthy children. We report bi-allelic DBR1 mutations in unrelated patients from different ethnicities, each of whom had brainstem infection due to herpes simplex virus 1 (HSV1), influenza virus, or norovirus. DBR1 encodes the only known RNA lariat debranching enzyme.

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Article Synopsis
  • - The study focused on a 3-year nationwide project in Japan to implement non-invasive prenatal testing (NIPT) for detecting aneuploidy in high-risk pregnant women, with proper genetic counseling provided.
  • - Out of 30,613 tests conducted, only 1.81% were positive for aneuploidy, with high true-positive rates for trisomies, and a very low false-negative rate (0.02%).
  • - The research emphasizes the need for a robust genetic counseling system and a supportive welfare framework to assist women who choose to have children with chromosomal conditions.
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The purpose of this study is to summarize the results from a survey on awareness of genetic counseling for pregnant women who wish to receive non-invasive prenatal testing (NIPT) in Japan. As a component of a clinical study by the Japan NIPT Consortium, genetic counseling was conducted for women who wished to receive NIPT, and a questionnaire concerning both NIPT and genetic counseling was given twice: once after pre-test counseling and again when test results were reported. The responses of 7292 women were analyzed.

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Glanzmann thrombasthenia is an inherited hemorrhagic disorder characterized by severe reduction or absence of platelet aggregation in response to multiple physiologic agonists due to qualitative or quantitative abnormalities of platelet glycoprotein (GP) IIb/IIIa. Treatment of bleeding episodes may require platelet transfusion. However, repeated platelet transfusions may result in GPIIb/IIIa and/or HLA immunization, and development of platelet refractoriness.

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Objectives: We have determined the number of fetal nucleated cells and the concentration of cell-free fetal DNA in parallel in the same maternal blood samples either before or after delivery, and studied the relationship between these two.

Methods: Venous blood samples were taken at four points around delivery from ten women who had singleton male fetus with informed consent. The number of fetal nucleated cells having a Y chromosome specific signal treated by two-color fluorescence in situ hybridization technique was counted using maternal whole blood.

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In this study we have investigated whether quantitative analysis of placental mRNAs in maternal plasma provides a way to monitor placental status. We measured plasma concentrations of human chorionic gonadotropin beta-subunit (betahCG) and human placental lactogen (hPL) mRNAs as previously reported mRNAs and pregnancy associated plasma protein A (PAPP-A), placenta-specific 1 (PLAC1) and glial cells-missing 1 (GCM1) mRNAs, which have not been measured during the course of normal pregnancy. Firstly, peripheral blood was obtained at various times from healthy pregnant women to clarify the time course of placental mRNAs.

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