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Cryopreservation of porcine embryos

• Hajime Nagashima, Naomi Kashiwazaki, Rodney J Ashman, Christopher Gerald Grupen, Mark B. Nottle
• Nature
• 1995

Production of cloned pigs from cultured fetal fibroblast cells.

• Andrew C Boquest, Christopher Gerald Grupen, +4 authors Mark B. Nottle
• Biology of reproduction
• 2002

Somatic cell nuclear transfer was used to produce live piglets from cultured fetal fibroblast cells. This was achieved by exposing donor cell nuclei to oocyte cytoplasm for approximately 3 h before… (More)

Cysteamine enhances in vitro development of porcine oocytes matured and fertilized in vitro.

• Christopher Gerald Grupen, Hiroshi Nagashima, Mark B. Nottle
• Biology of reproduction
• 1995

Most porcine oocytes matured and fertilized in vitro fail to develop normally due to abnormal fertilization. The aim of this study was to determine the effect of cysteamine on pronuclear formation… (More)

Relationship between cumulus cell apoptosis, progesterone production and porcine oocyte developmental competence: temporal effects of follicular fluid during IVM.

• Christopher Gerald Grupen, David T Armstrong
• Reproduction, fertility, and development
• 2010

The objective of the present study was to determine the temporal effects of sow follicular fluid (FF) in vitro on cumulus cell viability and function, as well as oocyte nuclear and cytoplasmic… (More)

Relationship between follicle size and oocyte developmental competence in prepubertal and adult pigs.

• Melanie A Bagg, Mark B. Nottle, David T Armstrong, Christopher Gerald Grupen
• Reproduction, fertility, and development
• 2007

The present study compared the distribution and steroid composition of 3-, 4- and 5-8-mm follicles on the surface of prepubertal and adult ovaries, and determined the relationship between follicle… (More)

Follicular progesterone levels decrease during the period of seasonal infertility in sows.

• Michael J. Bertoldo, Patricia K. Holyoake, Gareth Evans, Christopher Gerald Grupen
• Reproduction in domestic animals = Zuchthygiene
• 2011

Impaired reproductive performance exhibited by the domestic sow during the late summer and early autumn months is referred to as seasonal infertility. This study was carried out to determine whether… (More)

Removal of cytoplasmic lipid enhances the tolerance of porcine embryos to chilling.

• Hiroshi Nagashima, Naomi Kashiwazaki, Rodney J Ashman, Christopher Gerald Grupen, Robert F. Seamark, Mark B. Nottle
• Biology of reproduction
• 1994

The lipid content of porcine 1-cell stage embryos was reduced (delipated) through the use of micromanipulation to remove the lipid layer formed after centrifugation. Of 94 delipated embryos chilled… (More)

Proteomic characterization and cross species comparison of mammalian seminal plasma.

• Xavier Druart, Jessica Paige Rickard, +10 authors Simon Paul de Graaf
• Journal of proteomics
• 2013

UNLABELLED Seminal plasma contains a large protein component which has been implicated in the function, transit and survival of spermatozoa within the female reproductive tract. However, the identity… (More)

Phorbol ester induces phosphorylation and down-regulation of connexin 43 in WB cells.

• Sung Yong Oh, Christopher Gerald Grupen, Andrew W. Murray
• Biochimica et biophysica acta
• 1991

Western blot analysis indicated that WB cells contained multiple proteins of molecular mass 42-47 K which reacted with anti-connexin 43 antibody. Incubation of cells with… (More)

Identification of sow-specific risk factors for late pregnancy loss during the seasonal infertility period in pigs.

• Michael J. Bertoldo, Christopher Gerald Grupen, Peter C. Thomson, Gareth Evans, Patricia K. Holyoake
• Theriogenology
• 2009

Reduced farrowing rates due to late pregnancy loss (LPL) is a manifestation of seasonal infertility in pigs. This study was undertaken to determine sow- and gilt-specific risk factors leading to LPL… (More)

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