Catecholamine physiology in the ovine fetus: III. Maternal and fetal response to acute maternal exercise
A study was made of the effects of maternal exercise on fetal plasma concentrations of catecholamines in nine ewes with chronically catheterized singleton fetuses at 125 to 137 days' gestation. The ewes were subjected to acute treadmill exercise of 2.5 mph for 45 minutes with continuous recordi...
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| Veröffentlicht in: | American journal of obstetrics and gynecology 1984-06, Vol.149 (4), p.426-434 |
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| container_end_page | 434 |
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| container_issue | 4 |
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| container_title | American journal of obstetrics and gynecology |
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| creator | Palmer, Sue M. Oakes, Gary K. Champion, Jean A. Fisher, Delbert A. Hobel, Calvin K. |
| description | A study was made of the effects of maternal exercise on fetal plasma concentrations of catecholamines in nine ewes with chronically catheterized singleton fetuses at 125 to 137 days' gestation. The ewes were subjected to acute treadmill exercise of 2.5 mph for 45 minutes with continuous recording of maternal and fetal blood pressures. Samples of arterial blood were obtained for measurement of catecholamines, glucose, and blood gases. Changes in blood flow in fetal organs in response to maternal exercise were assessed by injection of radioactive microspheres. The maternal plasma catecholamine responses were related to the severity of the exercise stress as indicated by the index of cardiac effort. The fetal responses did not correlate with maternal cardiac effort. A significant decrease in fetal Po2 with a moderate alkalosis occurred, accompanied by a significant elevation in circulating levels of norepinephrine. At the peak of exercise, there was an increase in fetal renal, adrenal, and placental blood flows, as compared to the control period. |
| doi_str_mv | 10.1016/0002-9378(84)90158-3 |
| format | Article |
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The maternal plasma catecholamine responses were related to the severity of the exercise stress as indicated by the index of cardiac effort. The fetal responses did not correlate with maternal cardiac effort. A significant decrease in fetal Po2 with a moderate alkalosis occurred, accompanied by a significant elevation in circulating levels of norepinephrine. 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Maternal and fetal response to acute maternal exercise</title><title>American journal of obstetrics and gynecology</title><addtitle>Am J Obstet Gynecol</addtitle><description>A study was made of the effects of maternal exercise on fetal plasma concentrations of catecholamines in nine ewes with chronically catheterized singleton fetuses at 125 to 137 days' gestation. The ewes were subjected to acute treadmill exercise of 2.5 mph for 45 minutes with continuous recording of maternal and fetal blood pressures. Samples of arterial blood were obtained for measurement of catecholamines, glucose, and blood gases. Changes in blood flow in fetal organs in response to maternal exercise were assessed by injection of radioactive microspheres. The maternal plasma catecholamine responses were related to the severity of the exercise stress as indicated by the index of cardiac effort. The fetal responses did not correlate with maternal cardiac effort. A significant decrease in fetal Po2 with a moderate alkalosis occurred, accompanied by a significant elevation in circulating levels of norepinephrine. At the peak of exercise, there was an increase in fetal renal, adrenal, and placental blood flows, as compared to the control period.</description><subject>Animals</subject><subject>Biological and medical sciences</subject><subject>Blood Circulation</subject><subject>Blood Gas Analysis</subject><subject>Blood Glucose</subject><subject>Blood Pressure</subject><subject>Dopamine - blood</subject><subject>Epinephrine - blood</subject><subject>Female</subject><subject>Fetal Blood - physiology</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Microspheres</subject><subject>Mother. Fetoplacental unit. Mammary gland. Milk</subject><subject>Norepinephrine - blood</subject><subject>Physical Exertion</subject><subject>Pregnancy</subject><subject>Pregnancy. Parturition. 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Milk</topic><topic>Norepinephrine - blood</topic><topic>Physical Exertion</topic><topic>Pregnancy</topic><topic>Pregnancy. Parturition. Lactation</topic><topic>Sheep</topic><topic>Vertebrates: reproduction</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Palmer, Sue M.</creatorcontrib><creatorcontrib>Oakes, Gary K.</creatorcontrib><creatorcontrib>Champion, Jean A.</creatorcontrib><creatorcontrib>Fisher, Delbert A.</creatorcontrib><creatorcontrib>Hobel, Calvin K.</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>MEDLINE - Academic</collection><jtitle>American journal of obstetrics and gynecology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Palmer, Sue M.</au><au>Oakes, Gary K.</au><au>Champion, Jean A.</au><au>Fisher, Delbert A.</au><au>Hobel, Calvin K.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Catecholamine physiology in the ovine fetus: III. Maternal and fetal response to acute maternal exercise</atitle><jtitle>American journal of obstetrics and gynecology</jtitle><addtitle>Am J Obstet Gynecol</addtitle><date>1984-06-15</date><risdate>1984</risdate><volume>149</volume><issue>4</issue><spage>426</spage><epage>434</epage><pages>426-434</pages><issn>0002-9378</issn><eissn>1097-6868</eissn><coden>AJOGAH</coden><abstract>A study was made of the effects of maternal exercise on fetal plasma concentrations of catecholamines in nine ewes with chronically catheterized singleton fetuses at 125 to 137 days' gestation. The ewes were subjected to acute treadmill exercise of 2.5 mph for 45 minutes with continuous recording of maternal and fetal blood pressures. Samples of arterial blood were obtained for measurement of catecholamines, glucose, and blood gases. Changes in blood flow in fetal organs in response to maternal exercise were assessed by injection of radioactive microspheres. The maternal plasma catecholamine responses were related to the severity of the exercise stress as indicated by the index of cardiac effort. The fetal responses did not correlate with maternal cardiac effort. A significant decrease in fetal Po2 with a moderate alkalosis occurred, accompanied by a significant elevation in circulating levels of norepinephrine. At the peak of exercise, there was an increase in fetal renal, adrenal, and placental blood flows, as compared to the control period.</abstract><cop>Philadelphia, PA</cop><pub>Elsevier Inc</pub><pmid>6731521</pmid><doi>10.1016/0002-9378(84)90158-3</doi><tpages>9</tpages></addata></record> |
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| identifier | ISSN: 0002-9378 |
| ispartof | American journal of obstetrics and gynecology, 1984-06, Vol.149 (4), p.426-434 |
| issn | 0002-9378 1097-6868 |
| language | eng |
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| source | MEDLINE; Elsevier ScienceDirect Journals |
| subjects | Animals Biological and medical sciences Blood Circulation Blood Gas Analysis Blood Glucose Blood Pressure Dopamine - blood Epinephrine - blood Female Fetal Blood - physiology Fundamental and applied biological sciences. Psychology Microspheres Mother. Fetoplacental unit. Mammary gland. Milk Norepinephrine - blood Physical Exertion Pregnancy Pregnancy. Parturition. Lactation Sheep Vertebrates: reproduction |
| title | Catecholamine physiology in the ovine fetus: III. Maternal and fetal response to acute maternal exercise |
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