Nakamura T

Plant-derived exosome-like nanoparticles (ELNs) exhibit diverse physiological activities across biological kingdoms. Talinum fruticosum (L.) Juss., known in Okinawa as 'Shibiran', is a traditional edible medicinal plant that is considered a…

ObjectiveUterine lithiasis is an extremely rare condition. Although bladder stone formation associated with intrauterine devices (IUDs) has occasionally been described, no previous cases of uterine calculus have been reported in the literat…

BACKGROUND: Polycystic ovary syndrome (PCOS) is a common cause of irregular menstrual cycles and infertility. Current treatments primarily involve ovulation induction and sex steroid hormone therapy. Tokishakuyakusan (TSS) is a traditional …

BACKGROUND: Endometriosis is an estrogen-dependent chronic inflammatory disease, however the mechanisms underlying inflammation remain unclear. Non-hormonal drugs that can prevent endometriosis progression and resolve endometriotic infertil…

Aging drives excessive ovarian oxidative stress (OS), impairing fertility and affecting granulosa cells (GCs), which are involved in folliculogenesis. This study aims to clarify the relationship between OS and autophagy in GCs and to identi…

BRCA1 is one of the causative genes for hereditary breast and ovarian cancer syndrome with a high risk of early-onset breast cancer. Whereas olaparib (OLA), an inhibitor of poly-ADP-ribose polymerase, has been applied as adjuvant therapy to…

PurposeNon-previa placenta accreta spectrum (PAS) is associated with assisted reproductive technology (ART), particularly frozen embryo transfer during hormone replacement therapy (HRC-FET). We especially aimed to evaluate the prevalence an…

INTRODUCTION: Endometriosis can cause of infertility, and evaluation methods for predicting clinical pregnancy outcomes are desired. Extracellular vesicles (EVs) exist in blood and it contains small non-coding RNAs (ncRNAs) that may reflect…

BACKGROUND: Assisted reproductive technology accounts for an increasing proportion of infertility treatments, and assessments to predict clinical pregnancy outcomes are desired. Extracellular vesicles exist in follicular fluid, and small no…

Two representative Kampo formulas, keishibukuryogan and tokishakuyakusan, are frequently prescribed for patients with dysmenorrhea. We previously constructed a model that could predict which of these 2 formulas was most suitable, which is b…

Ovarian endometrioma (OE) is a common gynecological disease that is often treated with surgery and hormonal treatment. However, ovarian cystectomy can impair the ovarian reserve (OR). Previously, we showed that perioperative administration …

BACKGROUND: Endometriosis is a complex syndrome characterized by an estrogen-dependent chronic inflammatory process that affects 10% of women of reproductive age. Ovarian endometriosis (OE) is the most common lesion in endometriosis and may…

Abstract Background Endometriosis is a complex syndrome characterized by an estrogen-dependent chronic inflammatory process that affects 10% of women of reproductive age. Ovarian endometriosis (OE) is the most common lesion in endometriosis…

AIM: Dienogest (DNG) is highly effective for relieving pain caused by endometriosis and adenomyosis. However, women with severe uterine swelling due to adenomyosis who take DNG usually experience metrorrhagia. This study aimed to examine th…

BACKGROUND: Ovarian endometrioma is a common gynecological disease that is often treated with surgery or hormonal treatment. Ovarian cystectomy, a surgical procedure for ovarian endometrioma, can result in impaired ovarian reserve. METHODS…

We present a rare case of phosphoglyceride crystal deposition disease (PCDD), as a gynecologic disease, with reference to histogenesis of crystal deposition. An 84-year-old woman, who had undergone simple hysterectomy for uterine leiomyoma …

Endometriosis is an estrogen-dependent inflammatory disease characterized by the presence of endometrium-like tissue in sites outside the uterine cavity. It affects 6-10% of women of reproductive age. Concerning abdominal wall endometriosis…

OBJECTIVE: To establish and characterize cell lines derived from human endometrial epithelial cells (ECs) and mesenchymal cells (MCs) from patients with and without endometriosis. DESIGN: In vitro experimental study. SETTING: University a…

Endometriosis has several distinguishing features in the ectopic endometrium, including chronic inflammation and fibrosis. According to the retrograde menstruation theory, endometriotic cells are derived from eutopic endometrial cells, and …

Repeated tissue injury and repair and fibrosis play a pivotal role in endometriosis. Fibrotic tissue consists of extracellular matrix proteins, regulated by transcriptional factors promoting cell proliferation and survival. Periostin is one…

Ovarian endometriosis (OE) provides women of reproductive age with not only severe menstrual pain but also infertility and an increased risk for ovarian carcinogenesis. Whereas peritoneal endometriosis models have been developed with syngen…

Mirror image is one of the most difficult situations that the assistant surgeon encounters in laparoscopic colorectal surgery. The aim of the present study was to investigate whether task performance with mirror images improves by changing …

Several features exist that distinguish endometriotic cells from eutopic endometrial cells. Progesterone resistance is one of the main distinguishing features, although how progesterone resistance affects the phenotype of endometriotic cell…

Ovarian reserve reflects the quality and quantity of available oocytes. This reserve has become indispensable for the better understanding of reproductive potential. Measurement of the serum anti-Müllerian hormone (AMH) level allows quantit…

BACKGROUND: Serum anti-Müllerian hormone (AMH) concentration has been used to assess ovarian reserve in patients with endometriosis, especially when endometrioma surgery is involved. Previously, we reported that decreased serum AMH levels a…