Takahashi T

BackgroundMicronutrient supplementation is widely used in infertility care and preconception management, yet clinical evidence supporting its effectiveness differs among vitamins.MethodsThis narrative review summarizes current evidence on w…

OBJECTIVE: Adenomyosis-related infertility is increasingly being diagnosed, and surgical intervention has been suggested to improve fertility. Elastography, a noninvasive ultrasound technique, is promising for diagnosing and guiding the res…

BackgroundRobotic simple hysterectomy (RSH) is the most common robotic gynecologic surgery in the United States. Uterine manipulators are commonly used to handle the uterus during laparoscopic surgery, but few studies have examined their ne…

Homocysteine is an amino acid naturally produced in the body and metabolized via the methionine cycle. High homocysteine levels can increase the risk of infertility and pregnancy complications, such as preeclampsia, preterm delivery, miscar…

BACKGROUND: Uterine adenomyosis is a benign disease, common among women in their 40 and 50 s, characterised by ectopic endometrial tissue in the uterine myometrial layer. Adenomyosis causes infertility and has a negative effect on the outco…

Introduction and importanceAn unicornuate uterus with a non-communicating rudimentary horn (UUNCRH) is a very rare uterine malformation which is difficult to diagnose and to decide the surgical plan. We aim to describe the case of pediatric…

BackgroundPolycystic ovary syndrome (PCOS) causes anovulation and is associated with a reduced clinical pregnancy rate. Metformin, which is widely used for treating PCOS, can lead to successful pregnancy by restoring the ovulation cycle and…

[This corrects the article DOI: 10.1016/j.heliyon.2020.e04628.].

The overwhelming majority of participants in current genetic studies are of European ancestry. To elucidate disease biology in the East Asian population, we conducted a genome-wide association study (GWAS) with 212,453 Japanese individuals …

IntroductionPower morcellation is an effective and minimally invasive technique used to remove specimen tissues or the uterus in total laparoscopic hysterectomy (TLH). However, it has the risk of intraperitoneal dissemination of tissue and …

Endometriosis is characterized by ectopic endometrial-like epithelium and stroma, of which molecular characteristics remain to be fully elucidated. We sequenced 107 ovarian endometriotic and 82 normal uterine endometrial epithelium samples …

AIM: Menorrhagia and dysmenorrhea are common symptoms. Uterine adenomyosis is one of the causes of menorrhagia and dysmenorrhea. These symptoms often decrease the quality of life in women. Microwave endometrial ablation (MEA) is a recently …

BackgroundRepeat breeding directly affects reproductive efficiency in cattle due to an increase in services per conception and calving interval. This study aimed to investigate whether changes in endometrial gene expression profile are invo…

We examined the prognostic factors for pregnancy in 210 vitrified-warmed embryo transfer (ET) cycles in 121 patients. The univariate analysis showed that age, gravida, the number of cycles associated with infertility caused by endometriosis…

Study objectiveTo evaluate a unique learning system for uterine artery embolization (UAE) and examine its feasibility and clinical outcomes for the treatment of symptomatic uterine leiomyomas and adenomyosis when performed by obstetrician-g…

The latest technique of transvaginal NOTES partial gastrectomy is described in detail. The procedure involves new "over-tube steering" technique and usage of two newly developed endoscopic accessories. The technique is feasible, safe, and p…

AIM: The aim of this study was to elucidate the risk of poor pregnancy outcomes in women with adenomyosis by comparing their outcomes to those of women without uterine abnormalities. MATERIAL AND METHODS: The subjects were 36 women diagnose…

BackgroundNY-ESO-1 antibodies are specifically observed in patients with NY-ESO-1-expressing tumours. We analysed whether the NY-ESO-1 humoral immune response is a useful tumour marker of gastric cancer.MethodsSera from 363 gastric cancer p…

A cross-sectional comparative study among women who underwent surgical treatment for endometriosis revealed that frequency of the Ala/Ala genotype at aryl hydrocarbon receptor repressor (AHRR) Pro185Ala polymorphism was three times higher (…

Phospho-enriched protein in astrocytes (PEA-15) is a 15-kDa phosphoprotein that slows cell proliferation by binding to and sequestering extracellular signal-regulated kinase (ERK) in the cytoplasm, thereby inhibiting ERK-dependent transcrip…

OBJECTIVE: To determine the effects of oxidative stress on the quality of oocytes and embryos, 8-hydroxy-2'-deoxyguanosine (8-OHdG) in granulosa cells was quantitatively studied during an in vitro fertilization and embryo transfer (IVF-ET) …

We describe a 47-year-old woman with severe aplastic anemia with genital bleeding who developed acute severe hepatitis after the administration of danazol while she was receiving cyclosporin. She had been diagnosed with severe aplastic anem…

PurposeThe aim was to investigate which ovarian hyperstimulation protocol performed in the same patients causes development of oocytes of good quality.MethodsTwenty normo-ovulatory women underwent three different controlled ovarian hypersti…

CD44 is a polymorphic and polyfunctional transmembrane glycoprotein widely expressed in many types of cells. Here, the expression of this protein on human membrana granulosa was studied by two techniques. Using confocal laser scanning micro…

OBJECTIVE: To investigate the incidence of apoptotic bodies in membrana granulosa in patients with endometriosis. DESIGN: Retrospective analysis. SETTING: Yamagata University Hospital. PATIENT(S): Fifty-eight normoovulatory women with en…