Importance of steric bulkiness of iridium photocatalysts with PNNP tetradentate ligands for CO reduction.

A series of Ir complexes has been developed as multifunctional photocatalysts for CO reduction to give HCOH selectively. The catalytic activities and photophysical properties vary widely across the series, and the bulky group insertion resulted in the formation of HCOH and CO with the catalyst turnover number of >10 400.

A case of placental polyp treated with an intraoperative injection of prostaglandin F followed by hysteroscopic resection.

A 27-year-old woman had massive genital bleeding after an artificial abortion. Color Doppler ultrasonography showed a hypervascular mass. Hysteroscopy revealed a placental polyp.

The role of blood in early endometrial-peritoneal interactions in a syngeneic mouse model of endometriosis.

Purpose: The aim of this study was to clarify the role of blood in the early stage of development of endometriotic lesions by developing a syngeneic transplantation model using immunocompetent mice.

Methods: Endometriotic lesions were induced in C57BL/6 mice by an intraperitoneal injection of endometrial fragments plus saline or endometrial fragments plus blood. Some endometrial fragments plus blood were injected with heparin, hirudin or tissue plasminogen activator (tPA).

Sperm-zona pellucida interaction and immunological infertility.

Immune reactions against gametes appear to be physiologically important for the maintenance of homeostasis in reproduction. In contrast, aberration of the immune homeostasis might give rise to 'immunological infertility'. Antisperm antibodies cause infertility by blocking fertilization.