Publications by authors named "Keiko Yamanouchi"

Aim: In Japan, the fetal heart rate pattern on cardiotocography is usually categorized into five levels for intrapartum management; however, studies on the 5-tier cardiotocography classification are limited. This study aimed to determine the correlation between 5-tier cardiotocography levels at delivery, neonatal Apgar scores and perinatal prognosis using a perinatal registry database.

Methods: This retrospective study used the 2018 Perinatal Registry Database of the Japan Society of Obstetrics and Gynecology.

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We report a rare case of cardiac tamponade caused by lung cancer in a pregnant woman. A 32-year-old multiparous pregnant woman was admitted to the hospital at 15 weeks of gestation with a persistent cough and dyspnea. Transthoracic echocardiography revealed a pericardial effusion with evidence of tamponade physiology.

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Objective: The primary objective was to investigate the association between early menopause and cardiovascular disease (CVD) prevalence in Japanese women. The secondary objective was to ascertain the association with CVD risk factors.

Methods: In this cross-sectional study, 7,239 naturally menopausal women from the Yamagata Cohort Study who completed an annual health visit and questionnaire between 2009 and 2015 were divided into three groups according to their age at menopause (women experiencing menopause at <45, 45-49 y, and ≥ 50 y).

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Oxidative stress (OS) is a state in which the oxidative capacity exceeds the antioxidant capacity in vivo. OS is associated with various perinatal diseases. There have been few reports about OS during pregnancy, such as OS changes that occur during gestation, normal maternal OS dynamics, and OS levels in umbilical cord blood.

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Article Synopsis
  • The study evaluated oxidative stress in visceral fat among premenopausal and postmenopausal women, finding that visceral adipocytes were significantly larger and exhibited higher lipid peroxidation levels in postmenopausal women.
  • Estradiol (E2), a form of estrogen, was shown to reduce reactive oxygen species (ROS) levels and increase the expression of antioxidant genes in adipocytes during experiments.
  • The results suggest that postmenopausal women face greater oxidative stress in their fat, while estrogen may help protect against this stress by enhancing antioxidant defenses in premenopausal women.
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Activation of Estrogen receptor (ER) α (α) promotes cell growth and influences the response of cancer cell to chemotherapeutic agents. However, the mechanism by which ERα activation antagonizes cells to chemotherapy-induced cytotoxicity remains unclear. Here, we investigated the effect of cisplatin on ERα activation.

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The Wilms' tumor 1 gene WT1 encodes a zinc transcription factor involved in a variety of cancer-related processes. In this study, we sought to investigate the effects of WT1 splice variants on tumorigenic activity and survival in an in vivo ovarian cancer model. To this end, we established stable ovarian cancer cell lines transduced with lentiviral constructs containing each of the four WT1 splice variants (- 17AA/- KTS, + 17AA/- KTS, - 17AA/+ KTS, and + 17AA/+ KTS).

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Aim: The aim of the present study was to evaluate the correlation between WT1 expression levels and clinical features, to investigate the prognostic value of WT1 expression and to use lentiviral constructs to examine whether overexpression of WT1 affects cell proliferation and invasion in ovarian cancer patients.

Materials And Methods: Real-time quantitative PCR (qPCR) methods were employed to analyze WT1 expression levels in clinical samples from 63 patients with ovarian cancer. The correlation between the copy number of WT1 mRNA and clinical variables was analyzed.

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