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Hitoshi Sugiyama

Researcher at Okinawa Institute of Science and Technology

Publications -  15
Citations -  334

Hitoshi Sugiyama is an academic researcher from Okinawa Institute of Science and Technology. The author has contributed to research in topics: Egg jelly & Sperm. The author has an hindex of 10, co-authored 15 publications receiving 296 citations. Previous affiliations of Hitoshi Sugiyama include University of the Ryukyus & St. Marianna University School of Medicine.

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Endometriosis and pregnancy outcome: are pregnancies complicated by endometriosis a high-risk group?

TL;DR: In this paper, the authors compared the pregnancy outcomes of women with or without a definitive diagnosis of endometriosis on laparoscopy, and found no significant differences in miscarriage (18.4% vs 18.1%), preterm birth (7.5% vs 8.3%), pregnancy-induced hypertension (PIH) and small-for-gestational-age (SGA) babies.
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Mechanism of egg envelope digestion by hatching enzymes, HCE and LCE in medaka, Oryzias latipes.

TL;DR: HCE and LCE cleaved different target sequences on the egg envelope proteins but shared one common cleavage site, which would result in the solubilization of the swollen egg envelope by the disruption of the filamentous structure that is thought to be formed by the non-covalent polymerization of ZP domains.
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Subchorionic hematoma occurs more frequently in in vitro fertilization pregnancy

TL;DR: The frequency of subchorionic hematoma is high in IVF pregnancies, and frozen-thawed embryo transfer, parity≥1, and blastocyst transfer may contribute to subChorionic Hematoma onset.

Molecular structure and hardening of egg envelope in fish

TL;DR: Biochemical characterization, cDNA analysis, and molecular phylogenetic analysis revealed that the fish egg envelope proteins belong to a characteristic family of ZP proteins containing ZP domains homologous to those of various vertebrates, not invertebrates.