Abstract:
BACKGROUND:Cisplatin is used as a key drug for ovarian yolk sac tumor (YST), but relapse may occur. Details of the molecular mechanism responsible for cisplatin resistance remain unclear. METHODS:We established cisplatin-resistant ovarian YST cells (NOY1-CR) from parent NOY1. To characterize these cells, we examined cross-resistance to other anticancer drugs. Then, cDNA microarray analysis was performed to quantify gene expression in NOY1 and NOY1-CR cells. The expression of several potential genes related to drug resistance was compared with parent cells by real-time PCR and Western blotting. Knockdown experiments using small interfering RNA (siRNA) were also performed to confirm the genetic association with drug resistance. RESULTS:The IC(50) for cisplatin of NOY1-CR was 22.3-fold higher than that for parent cells. NOY1-CR cells showed cross-resistance to some drugs, but not to VP-16 and bleomycin. Microarray analysis identified 315 up-regulated and 412 down-regulated genes in NOY1-CR cells. Knockdown of GSTA1, which was up-regulated in resistant cells, by GSTA1 siRNA restored cisplatin sensitivity in NOY1-CR cells. CONCLUSIONS:Our data suggest the molecular mechanisms of cisplatin resistance and show the potential for GSTA1 to become a novel therapeutic target for cisplatin-resistant ovarian YST.
journal_name
Gynecol Obstet Investjournal_title
Gynecologic and obstetric investigationauthors
Shibata K,Umezu T,Sakurai M,Kajiyama H,Yamamoto E,Ino K,Nawa A,Kikkawa Fdoi
10.1159/000320744subject
Has Abstractpub_date
2011-01-01 00:00:00pages
104-11issue
2eissn
0378-7346issn
1423-002Xpii
000320744journal_volume
71pub_type
杂志文章abstract::It is recognised that there is a non-reactive status in the maternal immune system during normal pregnancy as it fails to recognise the fetus which is an allograft. The present study was aimed to understand the nature of cell-mediated immune response and the presence of immunosuppressive factors during human pregnancy...
journal_title:Gynecologic and obstetric investigation
pub_type: 杂志文章
doi:10.1159/000294838
更新日期:1992-01-01 00:00:00
abstract:OBJECTIVES:In this study, we aimed to compare the levels of maternal blood lipids, placental and venous blood lipid transporters, and inflammatory factor receptors in pregnant women with and without gestational diabetes mellitus (GDM). We also aimed to figure out the relationship between these values and neonatal weigh...
journal_title:Gynecologic and obstetric investigation
pub_type: 杂志文章
doi:10.1159/000510032
更新日期:2021-01-22 00:00:00
abstract:OBJECTIVE:To describe three-dimensional (3-D) sonographic features of hydrops fetalis. METHODS:A total of 6 cases with hydrops fetalis from 15 to 32 weeks of gestation were studied with transabdominal 3-D sonography (3.5 MHz). RESULTS:Before around 20 weeks of gestation, the skin becomes a transparent-like structure,...
journal_title:Gynecologic and obstetric investigation
pub_type: 杂志文章
doi:10.1159/000010167
更新日期:1999-01-01 00:00:00
abstract::This study was undertaken to evaluate the response to parenteral administration of iron in 62 pregnant patients with asiderotic anemia and mean initial hemoglobin (Hb) concentrations (Hb1) of 9.91+/-(SD) 1.13 g/dl. Iron (742+/-366 mg) was administered intravenously, and the response to treatment was classified accordi...
journal_title:Gynecologic and obstetric investigation
pub_type: 临床试验,杂志文章
doi:10.1159/000010109
更新日期:1999-01-01 00:00:00
abstract:OBJECTIVE:To evaluate the antenatal screening of aberrant umbilical vessels and assess the association of fetal abnormality with these entities. STUDY DESIGN:444 pregnant women were studied with routine obstetric ultrasound and Doppler color flow imaging in late second trimester or early third trimester. Fetal growth ...
journal_title:Gynecologic and obstetric investigation
pub_type: 杂志文章
doi:10.1159/000291863
更新日期:1997-01-01 00:00:00
abstract::The identification of immunoreactive beta-endorphin, beta-lipotropin and ACTH from extracts of human placentas by radioimmunoassay suggests a probable synthesis of these peptides in the placenta. In this study we investigated the presence of beta-endorphin and ACTH in placenta, amniotic membranes and umbilical cord us...
journal_title:Gynecologic and obstetric investigation
pub_type: 杂志文章
doi:10.1159/000299023
更新日期:1985-01-01 00:00:00
abstract:OBJECTIVE:To evaluate whether prolactin, alpha-fetoprotein (AFP) or B-human chorionic gonadotropin (BHCG) is the most effective marker in vaginal fluid for diagnosing prelabor rupture of membranes (PROM). These proteins are present in amniotic and vaginal fluid and have been reported to be potent markers of PROM, but h...
journal_title:Gynecologic and obstetric investigation
pub_type: 杂志文章
doi:10.1159/000097844
更新日期:2007-01-01 00:00:00
abstract:BACKGROUND:Preeclampsia (PE) is associated with oxidative stress in the maternal circulation and placenta. This study aimed to determine if inhibition of lectin-like oxidized low-density lipoprotein receptor 1 (LOX-1) gives protection against oxidative stress-mediated trophoblast dysfunction. METHODS:Plasma and placen...
journal_title:Gynecologic and obstetric investigation
pub_type: 杂志文章
doi:10.1159/000370195
更新日期:2015-01-01 00:00:00
abstract:OBJECTIVE:To compare the maternal and perinatal outcome of nulliparous women 35 years and older at the time of delivery with nulliparous women 25-29 years old. METHODS:A retrospective review of maternal and newborn records of singleton gestations only for first birth in women aged 35 and older (study group n = 143) we...
journal_title:Gynecologic and obstetric investigation
pub_type: 杂志文章
doi:10.1159/000064689
更新日期:2002-01-01 00:00:00
abstract::Endometriosis is a sex steroids-dependent disease. It has been postulated that certain genetic polymorphisms involved in sex steroids biosynthesis and metabolisms may be associated with increased risk of developing endometriosis. Despite a deluge of reports of positive associations of endometriosis with numerous polym...
journal_title:Gynecologic and obstetric investigation
pub_type: 杂志文章,meta分析,评审
doi:10.1159/000089011
更新日期:2006-01-01 00:00:00
abstract::In 121 women attending the infertility clinic between 1978 and 1982, 127 cycles with luteal phases of 10 days or more were investigated by a complete basal body temperature (BBT) chart, three plasma progesterone assays taken between 11 and 4 days before menses, and a dated endometrial biopsy (EB) taken at the time of ...
journal_title:Gynecologic and obstetric investigation
pub_type: 杂志文章
doi:10.1159/000299140
更新日期:1984-01-01 00:00:00
abstract::This study was conducted to determine the accuracy of frozen section diagnosis in borderline ovarian tumors. Thirty-three patients were evaluated on the basis of frozen sections between February 1992 and December 1997. Frozen section diagnosis and final diagnosis were divided into three categories: for frozen section ...
journal_title:Gynecologic and obstetric investigation
pub_type: 杂志文章
doi:10.1159/000010244
更新日期:2000-01-01 00:00:00
abstract::The mucin-like carcinoma-associated antigen (MCA) enzyme immunoassay was tested in 962 healthy controls. MCA levels were compared with CA 125 in 70 patients with benign and 76 with malignant ovarian tumors. In addition MCA was compared with CA 15.3 in 58 patients with breast cancer and with CEA in 50 patients with col...
journal_title:Gynecologic and obstetric investigation
pub_type: 杂志文章
doi:10.1159/000291890
更新日期:1996-01-01 00:00:00
abstract::Severe fetal distress was produced in 16 fetal dogs by successive and/or prolonged occlusion of the maternal abdominal aorta in an acute surgical preparation, and was characterized in fetal arterial blood of 7.06 for pH, 10 mm Hg for O2, 127 mm Hg for CO2, and fetal heart rate decelerations. Five fetuses recovered spo...
journal_title:Gynecologic and obstetric investigation
pub_type: 杂志文章
doi:10.1159/000294837
更新日期:1992-01-01 00:00:00
abstract:BACKGROUND/AIMS:We updated human chorionic gonadotropin (hCG) regression curves created in the eighties after evacuation of complete and partial molar (CM and PM, respectively) pregnancies using modern hCG assays. We created similar curves for patients in need of chemotherapy (gestational trophoblastic neoplasia [GTN])...
journal_title:Gynecologic and obstetric investigation
pub_type: 杂志文章
doi:10.1159/000458523
更新日期:2018-01-01 00:00:00
abstract::The uteroplacental blood flow was measured in 12 women with hypertension during pregnancy before and after intravenous injection of dihydralazine. After intravenous administration of 18.5 MBq (0.5 mCi) 113mIn, the gamma radiation emanating from the placenta was recorded with a computer-linked gamma camera during 10-se...
journal_title:Gynecologic and obstetric investigation
pub_type: 杂志文章
doi:10.1159/000299279
更新日期:1983-01-01 00:00:00
abstract:BACKGROUND:A hypoxic environment is known to be essential for early placentation. A low oxygen tension induces hypoxia-inducible factor-1 (HIF-1alpha) which may play an important role as a transcription factor in maintaining the proliferative and undifferentiated phenotype in human trophoblasts. METHODS:We analyzed th...
journal_title:Gynecologic and obstetric investigation
pub_type: 杂志文章
doi:10.1159/000097634
更新日期:2007-01-01 00:00:00
abstract:OBJECTIVE:Urinary bladder endometriosis is a severe form of endometriosis often requiring surgery. The several cases treated at our hospital in recent years has led us to evaluate the incidence of urinary bladder endometriosis in Finland. METHODS:We performed a register-based analysis of incidence of urinary bladder e...
journal_title:Gynecologic and obstetric investigation
pub_type: 杂志文章
doi:10.1159/000288161
更新日期:2010-01-01 00:00:00
abstract::In order to investigate the effect of hormone replacement therapy (HRT) on plasma homocysteine and C-reactive protein (CRP) levels 46 healthy postmenopausal women were prospectively enrolled. HRT, which was either 0.625 mg/day conjugated equine estrogen (CEE) plus 2.5 mg/day medroxyprogesterone acetate (MPA) or 0.625 ...
journal_title:Gynecologic and obstetric investigation
pub_type: 杂志文章
doi:10.1159/000049412
更新日期:2002-01-01 00:00:00
abstract::Uterine leiomyomas are the most common tumors of the genital tract. Growth factors seem to be implicated in the development of leiomyoma. The aim of this study was to determine insulin-like growth factor 1 receptor (IGF-1-R) mRNA levels and IGF-1-R tyrosine kinase activity in normal myometrium and leiomyoma. Plasma me...
journal_title:Gynecologic and obstetric investigation
pub_type: 杂志文章
doi:10.1159/000076690
更新日期:2004-01-01 00:00:00
abstract:INTRODUCTION:Maternal risk factors may interfere with mechanisms regulating fetal growth. The aim of the present study was to determine which sociodemographic and reproductive risk factors may be related to fetal growth restriction (FGR), with a special focus on determinants possible for preventive intervention. MATER...
journal_title:Gynecologic and obstetric investigation
pub_type: 杂志文章
doi:10.1159/000314020
更新日期:2010-01-01 00:00:00
abstract:HYPOTHESIS:The new hysteroscopic system with mechanical energy is an effective outpatient technique for diagnosis and treatment that has certain advantages over conventional hysteroscopy in the management of endometrial polyps. OBJECTIVES:Our primary objective was to assess the total duration of hysteroscopy and polyp...
journal_title:Gynecologic and obstetric investigation
pub_type: 杂志文章,随机对照试验
doi:10.1159/000377700
更新日期:2015-01-01 00:00:00
abstract::25 singleton pregnancies were terminated by cesarean section between 28 and 33 weeks of gestation because of suspected growth retardation and abnormal unstressed cardiotocograms. Only infants with birth weights below the tenth centile were considered. 17 survived and were neurologically examined at 2.5-7 years of age....
journal_title:Gynecologic and obstetric investigation
pub_type: 杂志文章
doi:10.1159/000299030
更新日期:1985-01-01 00:00:00
abstract::In the present study we have measured the concentrations of interleukin-1 beta (IL-1 beta) and tumor necrosis factor-alpha (TNF-alpha) in preovulatory follicular fluid (FF) samples obtained from patients undergoing ovulation induction with human menopausal gonadotropin/human chorionic gonadotropin. In 13 of the 24 (54...
journal_title:Gynecologic and obstetric investigation
pub_type: 杂志文章
doi:10.1159/000294853
更新日期:1992-01-01 00:00:00
abstract:OBJECTIVES:The aim of this study is to evaluate oxidative protein damage (OPD) by investigating protein carbonyl (PCO) and nitrotyrosine (NT) levels, oxidative stress by total thiol (T-SH), erythrocyte glutathione (GSH) and nitric oxide (NO) levels in women receiving hormone replacement therapy (HRT). MATERIALS AND ME...
journal_title:Gynecologic and obstetric investigation
pub_type: 杂志文章
doi:10.1159/000067718
更新日期:2002-01-01 00:00:00
abstract::Fifty-six patients with pelvic endometriosis were treated with a buserelin dosage of 200 micrograms/day s.c. for 6 months. Scoring of the American Fertility Society (AFS) for endometriosis was performed by laparoscopy in all cases before and at the end of therapy. Serum CA-125 and estradiol levels were determined befo...
journal_title:Gynecologic and obstetric investigation
pub_type: 杂志文章
doi:10.1159/000292491
更新日期:1994-01-01 00:00:00
abstract:OBJECTIVE:The endometriosis fertility index (EFI) is a novel index for predicting pregnancy after surgery. We investigated the utility of the EFI for predicting the ability to conceive without assisted reproductive technology (ART) treatment after laparoscopic surgery. METHODS:From July 2011 through December 2012, we ...
journal_title:Gynecologic and obstetric investigation
pub_type: 杂志文章
doi:10.1159/000480454
更新日期:2018-01-01 00:00:00
abstract::The patterns of plasma melatonin, gonadotropins, sex steroids and prolactin were studied in anovulatory infertile females undergoing ovulation induction with hMG/hCG. Melatonin levels were found to fluctuate during the menstrual cycle of these subjects with a nadir at mid-cycle and peak occurring at the early follicul...
journal_title:Gynecologic and obstetric investigation
pub_type: 杂志文章
doi:10.1159/000009977
更新日期:1998-01-01 00:00:00
abstract::Receptor sites for 7 FITC-conjugated lectins were examined on preimplantation mouse embryos at various stages of development: zygotes; 2; 6-8 cells; morulae; blastocyst; expanded blastocyst, and isolated inner cell mass. In order to determine the solidity of the binding, the embryos were incubated with lectins, washed...
journal_title:Gynecologic and obstetric investigation
pub_type: 杂志文章
doi:10.1159/000298787
更新日期:1987-01-01 00:00:00
abstract:BACKGROUND/AIMS:To determine whether genetic alterations in the CD9 gene are associated with female infertility in humans. METHODS:We sequenced the entire coding region of this gene in 86 Japanese women with unexplained infertility and further conducted a case-control study of six tagging single nucleotide polymorphis...
journal_title:Gynecologic and obstetric investigation
pub_type: 杂志文章
doi:10.1159/000262451
更新日期:2010-01-01 00:00:00