Gentaro Izumi
No ORCID on file
· 48 papers in corpus
· active 2011-2026
Study types
- article 34
- other 6
- preprint 3
- case-report 2
- book-chapter 1
Condition tags
- endometriosis 37
- endometrioma 14
- adenomyosis 9
- dysmenorrhea 3
- infertility 2
- thoracic_endometriosis 1
- die_deep_infiltrating 1
- bladder_endometriosis 1
Top journals
Frequent coauthors
- Yutaka Osuga 46
- Kaori Koga 43
- Yasushi Hirota 42
- Miyuki Harada 39
- Tetsuya Hirata 38
- Osuga Y 32
- Izumi G 31
- Masashi Takamura 30
- Tomoko Makabe 21
- Tomoyuki Fujii 21
article
2016
Drospirenone has been used as a progestin in oral contraceptives with ethinyl estradiol (DRSP/EE) and is expected to regulate endometriosis, however, the direct effects of drospirenone on endometriosis have not been clarified. The aim of th…
article
2016
CONTEXT: Endometriosis is an estrogen-dependent, chronic inflammatory disease. Recent studies have shown that vitamin D (VD) is an effective modulator of the immune system and plays an important role in controlling many inflammatory disease…
article
2016
article
2016
PROBLEM: Neutrophils are known to be accumulated in endometriosis; however, direct evidence of the impact of neutrophils in the development of endometriosis was lacking. To clarify the importance of neutrophils, we examined the effect of ne…
article
2016
PROBLEM: Resistance to apoptosis, together with inflammatory and invasive activity, contributes to the pathogenesis of endometriosis; therefore, approaches that can safely enhance apoptosis in endometriotic tissue are highly sought after as…
article
2016
Endometriosis is recognized as an inflammatory disease in which inflammatory cytokines, such as interleukin (IL)-1β and TNFα, play important roles. Immunological factors are also suggested to be involved in the pathogenesis of endometriosis…
article
2015
ObjectiveTo investigate the in vitro effect of drospirenone on human eutopic endometrial (EuSC) and ectopic endometriotic stromal cells (EcSC).DesignComparative and laboratory study. The experimental procedures were approved by the Institut…
case-report
2015
STUDY OBJECTIVES: To evaluate the frequency of pneumothorax after laparoscopic surgery and to identify possible correlations to endometriosis. DESIGN: Retrospective review. SETTING: Tokyo University Hospital between 2006 and 2013. PATIEN…
article
2015
article
2015
PROBLEM: The proportion of CD4+ T lymphocytes, Th1, Th2, Th17, and regulatory T cells in endometriosis lesions and peripheral blood are not known. METHOD OF STUDY: Lymphocytes were isolated from endometriosis lesions (n = 10) and endometriu…
article
2015
article
2014
Dienogest is a novel progestin that is highly selective for progesterone receptors and inhibits endometriosis. However, it remains unknown how the administration of dienogest to patients with endometriosis impacts on their lesion tissues. T…
article
2014
Adenomyosis is a common disorder in premenopausal women that causes dysmenorrhea, pelvic pain and menorrhagia. Considering that adenomyosis is an estrogen-dependent disease, the medical treatment is based on this hormone. Effective and well…
article
2014
PROBLEM: Immune tolerance to endometriotic cells is important to promote endometriosis. Tryptophan 2,3-dioxygenase (TDO) enhances immune tolerance by catabolizing tryptophan to kynurenine. We studied whether interleukin-1β (IL-1β), a typica…
article
2014
article
2013
CONTEXT: Endometriosis is a chronic inflammatory disease in which immune response and production of estrogen in endometriotic tissues are involved in the development of the disease. Prostaglandin E2 (PGE2) stimulates aromatase (P450arom) ex…
article
2013
article
2012
The aim of this study is to examine the regulation of follistatin, an activin-binding protein, in endometriosis. Endometrioma stromal cells (EoSCs) were obtained from 9 patients undergoing laparoscopy of the ovarian endometrioma. In culture…
article
2012
ObjectiveTo investigate a new role of interleukin (IL)-17A in endometriosis.DesignLaboratory study.SettingUniversity hospital.Patient(s)Patients with ovarian endometrioma undergoing laparoscopy or laparotomy.Intervention(s)Primary culture o…
article
2012
STUDY QUESTION: Is thymic stromal lymphopoietin (TSLP) involved in the pathophysiology of endometriosis? SUMMARY ANSWER: TSLP is up-regulated by interleukin (IL)-1β and may be involved in the development of endometriosis. WHAT IS KNOWN ALRE…
article
2012
article
2011
ObjectiveTo examine the regulation and the function of activin-A in stromal cells derived from endometrioma.DesignMolecular studies.SettingUniversity research laboratory.Patient(s)Endometrioma stromal cells (EoSC) were obtained from 28 pati…
other
2011
Extragenital endometriosis severely impairs the quality of life for affected women but its standard management has not yet been well established because of its relatively low incidence. As extragenital organs, intestine, followed by urinary…