Masuzaki H

Background: As its name indicates, anti-Müllerian hormone (AMH) is primarily found as an inhibitor of the Müllerian duct in male fetus. On the other hand, AMH may act as a mediator of Müllerian duct-derived female tissue, such as endometriu…

PURPOSE: Surgery for endometriomas may cause detrimental effects on ovarian reserve. We evaluated the safety of three-step laparoscopic surgery for endometriomas utilizing dienogest in terms of post-surgical ovarian reserve. METHODS: Twelv…

BACKGROUND: Autoimmune reactions and subsequent inflammation may underlie spermatogenic dysfunction and endometriosis-related infertility. The aim of this study is to identify disease-specific antigens in immune complexes (ICs) in seminal p…

Endometrioma is one of the main pathologies of endometriosis, though its pathogenesis still remains enigmatic. Ovarian reserve is defined as the number and quality of the follicles left in the ovary at any given time. The cause of infertili…

INTRODUCTION: Round ligament varicosities (RLV) are not well-known and they are usually caused by pregnancy. Although the groin swelling of RLV mimics an inguinal hernia, it is difficult to distinguish between them through clinical examinat…

OBJECTIVE: Endometriosis is commonly believed to originate from functionalis endometrium and adenomyosis from basalis endometrium. Due to the lack of enough information, we investigated the biological differences between these two layers of…

OBJECTIVE: Increased intrauterine microbial colonization by bacteria culture method and occurrence of endometritis have been reported in women with endometriosis. Here we investigated microbial colonization in intrauterine environment and c…

OBJECTIVE: A prominent stress reaction in the pelvis of women with endometriosis and the role of human heat shock protein 70 (HSP70) in inflammation and the growth of endometriosis has been recently demonstrated. We report here expression o…

Adenomyosis is commonly believed to arise from the basalis endometrium. As an estromedin growth factor, hepatocyte growth factor (HGF) exhibits multiple functions in endometriosis, a disease commonly believed to arise from the functionalis …

Endometriosis is a multifactorial disease mostly affecting women of reproductive age. An additive effect between inflammation and stress reaction on the growth of endometriosis has been demonstrated. Here we investigated the combined effect…

OBJECTIVES: Human heat shock protein 70 (HSP70) has been reported to enhance Toll-like receptor 4-mediated pelvic inflammation and growth of endometriotic cells. However, information on tissue expression of HSP70 before and after treatment …

OBJECTIVE: To evaluate the effects of endometriomas on the regulation of early follicular development. DESIGN: Histologic analysis of prospectively collected biopsy samples. SETTING: Research unit in a university hospital. PATIENT(S): Wo…

STUDY QUESTION: Is there any risk of intra-uterine bacterial colonization and concurrent occurrence of endometritis in women with endometriosis? SUMMARY ANSWER: An increase in intra-uterine microbial colonization and concurrent endometriti…

STUDY QUESTION: Is there any combined effect between inflammation and stress reaction on Toll-like receptor 4 (TLR4)-mediated growth of endometriotic cells? SUMMARY ANSWER: A combined effect of local inflammation and stress reaction in the…

STUDY QUESTION: Is there any occurrence of hidden (occult) endometriotic lesions in normal peritoneum of women with and without visible endometriosis? SUMMARY ANSWER: We detected a slightly higher occurrence of occult microscopic endometri…

Endometriosis is an estrogen-dependent chronic inflammatory condition associated with variable degrees of pelvic pain and infertility. Studies have showed that the growth and progression of endometriosis continue even in ovariectomized anim…

STUDY QUESTION: Is the occurrence of pelvic pain in women with ovarian endometrioma associated with coexisting peritoneal lesions (PLs)? SUMMARY ANSWER: Pelvic pain in women with ovarian endometrioma is usually associated with coexisting P…

BACKGROUND: Endometriotic cells display invasive characteristics, despite their benign histological appearance. Recently, the epithelial-mesenchymal transition, in which epithelial cells acquire mesenchymal and migratory properties, has att…

STUDY QUESTION: Can prostaglandin E(2) (PGE(2)) in menstrual and peritoneal fluid (PF) promote bacterial growth in women with endometriosis? SUMMARY ANSWER: PGE(2) promotes bacterial growth in women with endometriosis. WHAT IS KNOWN ALREA…

We measured serum anti-Müllerian hormone levels before and after surgery in women undergoing unilateral and monolocular cystectomy for benign ovarian diseases. Comparing to control benign cysts, we found a significant decline in serum anti-…

BACKGROUND: We recently demonstrated the effect of gonadotrophin-releasing hormone agonist (GnRHa) on tissue inflammation, angiogenesis and apoptosis in endometriosis, adenomyosis and uterine myoma. Here, we investigated expression of GnRH …

OBJECTIVES: We investigated the effect of human seminal fluid on the growth of endometrial cells derived from women with and without endometriosis. STUDY DESIGN: Seminal plasma (SP) was collected from 18 healthy fertile men. Serum, periton…

To test the hypothesis that bacterial contamination of menstrual blood could be a local biologic event in the development of endometriosis, menstrual blood was cultured and bacterial endotoxin was measured in menstrual blood and peritoneal …

To identify susceptibility genes for endometriosis in Japanese women, genome-wide association (GWA) analysis was performed using two case-control cohorts genotyped with the Affymetrix Mapping 500K Array or Genome-Wide Human SNP Array 6.0. I…

BACKGROUND: Information is limited regarding the multifunctional role of GnRH agonist (GnRHa) therapy in reproductive diseases. We investigated the pattern of changes in inflammatory reaction, micro-vessel density and apoptosis in the tissu…