Regional variations in guinea pig uterine blood flow during pregnancy: Relationship to intrauterine growth of the fetal-placental unit

Teratology ◽  
1983 ◽  
Vol 27 (1) ◽  
pp. 101-107 ◽  
Author(s):  
David R. Garris
Keyword(s):  
Blood Flow ◽  
Guinea Pig ◽  
Uterine Blood Flow ◽  
Regional Variations ◽  
Intrauterine Growth

Uterine blood flow and timing of blastocyst implantation in the guinea pig

1981 ◽  
Vol 241 (2) ◽  
pp. E142-E145
Author(s):  
D. R. Garris ◽  
D. S. Whitehead
Keyword(s):  
Blood Flow ◽  
Guinea Pig ◽  
Guinea Pigs ◽  
Temporal Relationship ◽  
Oxygen Electrode ◽  
Uterine Blood Flow ◽  
Serum Estradiol ◽  
Dramatic Rise ◽  
Blastocyst Implantation

The temporal and direct relationships between serum estradiol (E) and progesterone (P) levels and uterine blood flow (UBF) and intrauterine oxygen tension (IU PO2) were examined in guinea pigs between days 1 and 8 of pregnancy. Both UBF and IU PO2 were measured in situ using a noninvasive electromagnetic blood flow monitor and needle oxygen electrode, respectively. Serum P levels remained relatively constant throughout the first 8 days of pregnancy. In contrast, serum E levels declined to basal levels between days 1 and 3, and then subsequently rose between days 4 and 7 before again falling to basal levels by day 8. The changes in UBF and IU PO2 paralleled those of serum E levels, both exhibiting a rise between days 5 and 6. The direct effect of oil, E, or P injections on UBF and IU PO2 measurements in ovariectomized animals indicated that E induced a dramatic rise in both uterine parameters, whereas both measurements remained at basal levels after oil or P treatment. The results of this study indicate that UBF and IU PO2 levels are directly regulated by the cyclic fluctuations in serum E. The temporal relationship between the days 4 to 7 rise in serum E, UBF, and IU PO2 levels and the timing of blastocyst implantation suggest that these events are involved in uterine preparation for nidation in the guinea pig.

scholarly journals Pregnancy Stimulation of DNA Synthesis and Uterine Blood Flow in the Guinea Pig

1997 ◽  
Vol 41 (5) ◽  
pp. 708-715 ◽  
Author(s):  
Linda E Keyes ◽  
Richard Majack ◽  
Edward C Dempsey ◽  
Lorna G Moore
Keyword(s):  
Blood Flow ◽  
Guinea Pig ◽  
Dna Synthesis ◽  
Uterine Blood Flow ◽  
Stimulation Of

EFFECT OF INTRAVENOUS EPINEPHRINE UPON UTERINE BLOOD FLOW VELOCITY IN THE PREGNANT GUINEA PIG

1985 ◽  
Vol 63 (Supplement) ◽  
pp. A453
Author(s):  
D. H. Chestnut ◽  
C. P. Weiner ◽  
J. E. Herrig ◽  
J. Wang
Keyword(s):  
Blood Flow ◽  
Guinea Pig ◽  
Flow Velocity ◽  
Blood Flow Velocity ◽  
Uterine Blood Flow
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