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Pof

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3 papers 0 to 25 followers
By Su Ling Yu Obgyn interested in reproductive medicine
https://www.readbyqxmd.com/read/24082083/hippo-signaling-disruption-and-akt-stimulation-of-ovarian-follicles-for-infertility-treatment
#1
Kazuhiro Kawamura, Yuan Cheng, Nao Suzuki, Masashi Deguchi, Yorino Sato, Seido Takae, Chi-hong Ho, Nanami Kawamura, Midori Tamura, Shu Hashimoto, Yodo Sugishita, Yoshiharu Morimoto, Yoshihiko Hosoi, Nobuhito Yoshioka, Bunpei Ishizuka, Aaron J Hsueh
Primary ovarian insufficiency (POI) and polycystic ovarian syndrome are ovarian diseases causing infertility. Although there is no effective treatment for POI, therapies for polycystic ovarian syndrome include ovarian wedge resection or laser drilling to induce follicle growth. Underlying mechanisms for these disruptive procedures are unclear. Here, we explored the role of the conserved Hippo signaling pathway that serves to maintain optimal size across organs and species. We found that fragmentation of murine ovaries promoted actin polymerization and disrupted ovarian Hippo signaling, leading to increased expression of downstream growth factors, promotion of follicle growth, and the generation of mature oocytes...
October 22, 2013: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/25567618/successful-fertility-preservation-following-ovarian-tissue-vitrification-in-patients-with-primary-ovarian-insufficiency
#2
Nao Suzuki, Nobuhito Yoshioka, Seido Takae, Yodo Sugishita, Midori Tamura, Shu Hashimoto, Yoshiharu Morimoto, Kazuhiro Kawamura
STUDY QUESTION: Is ovarian tissue cryopreservation using vitrification followed by in vitro activation (IVA) of dormant follicles a potential approach for infertility treatment of patients with primary ovarian insufficiency (POI)? SUMMARY ANSWER: Our vitrification approach followed by IVA treatment is a potential infertility therapy for POI patients whose ovaries contain residual follicles. WHAT IS KNOWN ALREADY: Akt (protein kinase B) stimulators [PTEN (phosphatase with TENsin homology deleted in chromosome 10) inhibitor and phosphatidyinositol-3-kinase (PI3 kinase) stimulator] activate dormant primordial follicles in vitro and ovarian fragmentation disrupts the Hippo signaling pathway, leading to the promotion of follicle growth...
March 2015: Human Reproduction
https://www.readbyqxmd.com/read/15919682/premature-ovarian-failure
#3
REVIEW
Deepti Goswami, Gerard S Conway
Premature ovarian failure (POF) causing hypergonadotrophic hypogonadism occurs in 1% of women. In majority of cases the underlying cause is not identified. The known causes include: (a) Genetic aberrations, which could involve the X chromosome or autosomes. A large number of genes have been screened as candidates for causing POF; however, few clear causal mutations have been identified. (b) Autoimmune ovarian damage, as suggested by the observed association of POF with other autoimmune disorders. Anti-ovarian antibodies are reported in POF by several studies, but their specificity and pathogenic role are questionable...
July 2005: Human Reproduction Update
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