Tasuku Harada

Endometriosis is a common chronic benign disease that affects reproductive age women and causes chronic pelvic pain and infertility. Despite its prevalence, the exact mechanisms of the pathogenesis of endometriosis-associated infertility ar…

OBJECTIVE: To evaluate the efficacy and safety of an ultra-low-dose oral contraceptive (NPC-01; 0.02 mg ethinyl estradiol and 1 mg norethisterone) in subjects with dysmenorrhea. DESIGN: Placebo-controlled, double-blind, randomized trial. …

BACKGROUND: Endometriosis, which occurs in approximately 10% of women of reproductive age, is defined as the presence of endometrial tissue outside the uterus. Women with endometriosis are more likely to have difficulty conceiving and tend …

Primary umbilical endometriosis is a rare disorder and is defined as the presence of ectopic endometrial tissue within the umbilicus. A patient with painful mass in the umbilicus during menstrual period is studied in this paper. The possibi…

Until recently, adenomyosis has been associated with multiparity, not impaired fertility. Currently, adenomyosis is diagnosed with increasing frequency in infertile patients since women delay their first pregnancy until their late 30s or ea…

IMPORTANCE: Ovarian endometrioma is the most common form of endometriosis. Laparoscopy is frequently chosen for its treatment because medical treatment alone is inadequate. However, the role of laparoscopic treatment of ovarian endometrioma…

OBJECTIVES: Low dose oral contraceptive pills (OCPs) that contain synthetic estrogen and progestin are often used to relieve chronic pelvic pain associated with endometriosis. We sought to evaluate the efficacy of drospirenone/ethinylestrad…

STUDY QUESTION: What is the role of the inhibitor of apoptosis proteins (IAPs) in human endometriotic tissues and a mouse model of endometriosis? SUMMARY ANSWER: Four IAP proteins were expressed in endometriotic tissue indicating IAPs may …

The molecular background of estrogen receptor (ER) expression is important to understand the pathophysiology of the high estrogen environment in endometriosis. However, the molecular details have not been fully understood. The objective of …

Dysmenorrhea is defined as symptoms associated with menstruation, such as abdominal pain, cramping and lumbago, that interfere with daily activity. Primary dys-menorrhea refers to menstrual pain without underlying pathology, whereas seconda…

The Japan Society of Obstetrics and Gynecology Reproductive Endocrinology Committee summarizes the activities of each subcommittee below from April 2011 to March 2013. 1. Survey for clinical outcomes of infertility treatment for women with …

OBJECTIVE: To investigate the clinical features of patients in Japan with malignant transformation of ovarian endometrioma. PATIENTS: Thirty-three patients diagnosed with ovarian cancer presumably arising from endometrioma were recruited r…

PROBLEM: How is the tumor necrosis factor (TNF) α-induced inhibitor of apoptosis (IAP) protein expression in endometriotic stromal cells (ESCs) involved in cell viability and signaling pathways? METHOD OF STUDY: Endometriotic stromal cells…

OBJECTIVE: To harmonize standard operating procedures (SOPs) and standardize the recording of associated data for collection, processing, and storage of human tissues relevant to endometriosis. DESIGN: An international collaboration involv…

OBJECTIVE: To harmonize the collection of nonsurgical clinical and epidemiologic data relevant to endometriosis research, allowing large-scale collaboration. DESIGN: An international collaboration involving 34 clinical/academic centers and…

OBJECTIVE: To harmonize standard operating procedures (SOPs) and standardize the recording of associated data for collection, processing, and storage of fluid biospecimens relevant to endometriosis. DESIGN: An international collaboration i…