Expression data from day 17 bovine endometrium
Ontology highlight
ABSTRACT:
ORGANISM(S): Bos taurus
PROVIDER: GSE35212 | GEO | 2012/01/20
SECONDARY ACCESSION(S): PRJNA150879
REPOSITORIES: GEO
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Project description:The potential for dietary supplementation with n-3 polyunsaturated fatty acids (n-3 PUFA) to improve reproductive efficiency in cattle has received much interest. The mechanisms by which n-3 PUFA may affect physiological and biochemical processes in key reproductive tissues are likely to be mediated by significant alterations in gene expression. We used microarrays to assess endometrial gene expression on day 17 of the estrous cycle in n-3 PUFA compared with control fed heifers. Beef heifers were supplemented with a rumen protected source of either a saturated fatty acid (CON; palmitic acid) or high n-3 PUFA (n-3 PUFA; 275 g) diet per animal per day for 45 days and global gene expression was determined in uterine endometrial tissue using an Affymetrix® oligonucleotide bovine array.
2012-01-20 | E-GEOD-35212 | biostudies-arrayexpress
Project description:In both beef and dairy cattle, the majority of embryo loss occurs in the first 14 days following insemination. During this period, the embryo is completely dependent on its maternal uterine environment for development, growth and ultimately survival, therefore an optimum uterine environment is critical to embryo survival. We used microarrays to assess endometrial gene expression in high and low fertility heifers during the mid-luteal phase of the estrous cycle. Charlaois × Limousin heifers were artificially inseminated on 4 successive occasions and heifers were subsequently characterized as either high or low fertility (HF; LF) based on the presence of an embryo on day 28 of pregnancy on all four inseminations or on one occasion only, respectively. From this population of animals, HF and LF heifers were slaughtered on day 7 of a synchronized estrous cycle and global gene expression in uterine endometrial tissue was determined using the Affymetrix 23K Bovine GeneChip.
2011-06-10 | E-GEOD-29853 | biostudies-arrayexpress
Project description:In both beef and dairy cattle, the majority of embryo loss occurs in the first 14-16 days following insemination. During this period, the embryo is completely dependent on its maternal uterine environment for development, growth and ultimately survival, therefore an optimum uterine environment is critical to embryo survival. We used microarrays to assess endometrial gene expression in high and low fertility heifers during the late-luteal phase of the estrous cycle. Charlaois M-CM-^W Limousin heifers were artificially inseminated on 4 successive occasions and heifers were subsequently characterized as either high or low fertility (HF; LF) based on the presence of an embryo on day 28 of pregnancy on all four inseminations or on one occasion only, respectively. From this population of animals, HF and LF heifers were slaughtered on day 14 of a synchronized estrous cycle and global gene expression in uterine endometrial tissue was determined using the AffymetrixM-BM-. 23K Bovine GeneChip. Array Annotation link: http://mad-db.science.uva.nl/~wdeleeuw/HybridAnnot/
2013-08-22 | E-GEOD-50091 | biostudies-arrayexpress
Project description:To identify heifers of contrasting fertility, serial rounds of artificial insemination (AI) were conducted in 201 synchronized crossbred beef heifers. The heifers were then fertility classified based on number of pregnancies detected on day 35 in the four AI opportunities. The reproductive tracts of a subset of the classified heifers were obtained on day 14 of the estrous cycle. Microarray analysis revealed differences in the endometrial transcriptome based on fertility classification.
2013-04-23 | GSE46274 | GEO
Project description:In both beef and dairy cattle, the majority of embryo loss occurs in the first 14 days following insemination. During this period, the embryo is completely dependent on its maternal uterine environment for development, growth and ultimately survival, therefore an optimum uterine environment is critical to embryo survival. We used microarrays to assess endometrial gene expression in high and low fertility heifers during the mid-luteal phase of the estrous cycle.
2011-06-10 | GSE29853 | GEO
Project description:In both beef and dairy cattle, the majority of embryo loss occurs in the first 14-16 days following insemination. During this period, the embryo is completely dependent on its maternal uterine environment for development, growth and ultimately survival, therefore an optimum uterine environment is critical to embryo survival. We used microarrays to assess endometrial gene expression in high and low fertility heifers during the late-luteal phase of the estrous cycle.
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Project description:To identify heifers of contrasting fertility, serial rounds of artificial insemination (AI) were conducted in 201 synchronized crossbred beef heifers. The heifers were then fertility classified based on number of pregnancies detected on day 35 in the four AI opportunities. The reproductive tracts of a subset of the classified heifers were obtained on day 14 of the estrous cycle. Microarray analysis revealed differences in the endometrial transcriptome based on fertility classification. Endometrium from 36 fertility-classified heifers (highly fertile, n=14; subfertile, n=12; infertile, n=10) was analyzed for differences in their transcriptome using a bovine microarray.
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Project description:The aberrant gene expression in the uterine endometrium and embryo has been the major causes of pregnancy failure in cattle. Therefore, selecting cows having adequate endometrial receptivity and embryos of better developmental competence based on the gene expression could increase the number of calves produced by in each cow during its productive life time. We used endometrial and embryo biopsy technology in conjunction with the pregnancy outcome information to establish a direct link between the pre-transfer endometrial or in vivo derived embryo gene expression and pregnancy outcome after embryo transfer. Endometrial samples were collected from Simmental heifers at day 7 and 14 of the estrous cycle, one cycle prior to embryo transfer. In the next cycle, embryo biopsies consisting of 60-70% of inner cell mass and trophectoderm were transferred to the recipients at day 7 of the estrous cycle. The remaining 30-40% parts of the embryos were retained for analysis.Pregnancy diagnosis was performed at days 28 and 42 by ultrasonography and at day 56 by rectal palpation. Those heifers returned to heat at day 21 were considered as non pregnant or non receptive endometrium (NP) while those heifers ended up with successful pregnancy and calf delivery was considered as the calf delivery group or receptive endometrium (CD). Following this, the endometrial samples collected during the pre-transfer period and the embryo biopsies retained during embryo transfer were categorized based on the pregnancy outcome. Those endometrial biopsies collected at days 7 and 14 of the estrous cycle from heifers resulted in successful calf delivery were designated as CDd7 and CDd14, respectively and endometrial biopsies taken at days 7 and 14 of the estrous cycle from those subsequently resulted in no pregnancy were designated as NPd7 and NPd14, respectively. Similarly, the embryo biopsies were classified as those embryo biopsies resulted in successful calf delivery and those resulted in no pregnancy
2010-04-07 | E-GEOD-20974 | biostudies-arrayexpress
Project description:The aberrant gene expression in the uterine endometrium and embryo has been the major causes of pregnancy failure in cattle. Therefore, selecting cows having adequate endometrial receptivity and embryos of better developmental competence based on the gene expression could increase the number of calves produced by each cow during its productive life time. We used endometrial and embryo biopsy technology in conjunction with the pregnancy outcome information to establish a direct link between the pre-transfer endometrial or in vivo derived embryo gene expression and pregnancy outcome after embryo transfer. Endometrial samples were collected from Simmental heifers at day 7 and 14 of the estrous cycle, one cycle prior to embryo transfer. In the next cycle, embryo biopsies consisting of 60-70% of inner cell mass and trophectoderm were transferred to the recipients at day 7 of the estrous cycle. The remaining 30-40% parts of the embryos were retained for analysis.Pregnancy diagnosis was performed at days 28 and 42 by ultrasonography and at day 56 by rectal palpation. Those heifers returned to heat at day 21 were considered as non pregnant or non receptive endometrium (NP) while those heifers ended up with successful pregnancy and calf delivery was considered as the calf delivery group or receptive endometrium (CD). Following this, the endometrial samples collected during the pre-transfer period and the embryo biopsies retained during embryo transfer were categorized based on the pregnancy outcome. Those endometrial biopsies collected at days 7 and 14 of the estrous cycle from heifers resulted in successful calf delivery were designated as CDd7 and CDd14, respectively and endometrial biopsies taken at days 7 and 14 of the estrous cycle from those subsequently resulted in no pregnancy were designated as NPd7 and NPd14, respectively. Similarly, the embryo biopsies were classified as those embryo biopsies resulted in successful calf delivery and those resulted in no pregnancy
2010-06-05 | E-GEOD-21047 | biostudies-arrayexpress
Project description:Over the past three decades, there has been a significant decline in dairy cattle fertility. A large proportion of pregnancy losses are believed to occur during the pre-implantation period, when the developing embryo is elongating rapidly and signaling its presence to the maternal system. The molecular mechanisms that prevent progression of the estrous cycle and allow the allogenic embryo to survive within the maternal environment are not well understood. To gain a more complete picture of these molecular events, global transcriptional profiling was performed using endometrial tissues from reproductive day 17 pregnant and non-pregnant (cycling) Holstein-Friesian dairy cattle.
2009-12-01 | GSE19140 | GEO