David T Armstrong
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Explore the profile of David T Armstrong including associated specialties, affiliations and a list of published articles.
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20
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361
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Recent Articles
11.
Dragovic R, Ritter L, Schulz S, Amato F, Thompson J, Armstrong D, et al.
Biol Reprod
. 2006 Dec;
76(5):848-57.
PMID: 17192514
Expansion of the mouse cumulus-oocyte complex (COC) is dependent on oocyte-secreted paracrine factors. Transforming growth factor beta (TGFB) superfamily molecules are prime candidates for the cumulus expansion-enabling factors (CEEFs), and...
12.
Bagg M, Nottle M, Grupen C, Armstrong D
Mol Reprod Dev
. 2006 Jul;
73(10):1326-32.
PMID: 16865720
Pre-pubertal pig oocytes display reduced developmental competence compared with adult oocytes following in vitro maturation (IVM). Exposure to dibutyryl cyclic adenosine monophosphate (dbcAMP) for the first 20 hr IVM improves...
13.
Grupen C, Fung M, Armstrong D
Reprod Fertil Dev
. 2006 Mar;
18(3):309-17.
PMID: 16554006
Inappropriate coordination of oocyte nuclear and cytoplasmic maturation is thought to contribute to the poor efficiency of embryo production in vitro. With the aim of improving this coordination, the effects...
14.
Role of oocyte-secreted growth differentiation factor 9 in the regulation of mouse cumulus expansion
Dragovic R, Ritter L, Schulz S, Amato F, Armstrong D, Gilchrist R
Endocrinology
. 2005 Mar;
146(6):2798-806.
PMID: 15761035
Oocyte-secreted factors are required for expansion of the mouse cumulus-oocyte complex, which is necessary for ovulation. Oocyte-secreted growth differentiation factor 9 (GDF9) signals through the bone morphogenetic protein receptor II...
15.
Gangnuss S, Sutton-McDowall M, Robertson S, Armstrong D
Biol Reprod
. 2004 Jun;
71(4):1135-41.
PMID: 15175232
In mice, exposure of the uterus to seminal plasma at mating initiates an inflammatory response within the endometrium, which is characterized by production of cytokines that recruit and activate leukocytes....
16.
Thomas R, Armstrong D, Gilchrist R
Biol Reprod
. 2003 Oct;
70(3):548-56.
PMID: 14568915
In the growing follicle, communication between the oocyte and its surrounding follicular cells is essential for normal oocyte and follicular development. Maturation of the fully grown oocyte in vivo is...
17.
Grupen C, McIlfatrick S, Ashman R, Boquest A, Armstrong D, Nottle M
Reprod Fertil Dev
. 2003 Aug;
15(1-2):81-7.
PMID: 12895404
The developmental competence of oocytes recovered from the ovaries of slaughtered prepubertal and adult pigs was evaluated after in vitro maturation, parthenogenetic activation and culture in vitro. In addition, the...
18.
OLeary S, Robertson S, Armstrong D
J Reprod Immunol
. 2002 Oct;
57(1-2):225-38.
PMID: 12385845
Seminal plasma is increasingly recognised as contributing to the reproductive process in roles apart from that of providing nutritive support and transport for spermatozoa. Seminal components elicit inflammatory responses in...
19.
Ryan N, Woodhouse C, Van der Hoek K, Gilchrist R, Armstrong D, Norman R
Biol Reprod
. 2002 Apr;
66(5):1548-54.
PMID: 11967222
Leptin is a product of the ob gene that is produced primarily by adipose tissue. Leptin and its receptors are found within the ovary, but it is unclear what function...
20.
Thomas R, Armstrong D, Gilchrist R
Dev Biol
. 2002 Apr;
244(2):215-25.
PMID: 11944932
The differential regulation of cAMP levels within the oocyte and somatic (cumulus) cell compartments of the bovine follicle, and the subsequent regulation of oocyte meiotic maturation was examined through specific...