Effects of dehydration and rehydration on plasma vasopressin and aldosterone in horses
We have investigated the change in plasma vasopressin and aldosterone concentrations in Namib (desert-adapted) and in control horses from a subtropical region, during an acute 12% dehydration and during rehydration, while food was available. During dehydration, vasopressin concentrations increased s...
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| Veröffentlicht in: | Physiology & behavior 1993-08, Vol.54 (2), p.223-228 |
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| creator | Sneddon, Jennifer C Van der Walt, J Mitchell, G Hammer, S Taljaard, J.J.F |
| description | We have investigated the change in plasma vasopressin and aldosterone concentrations in Namib (desert-adapted) and in control horses from a subtropical region, during an acute 12% dehydration and during rehydration, while food was available. During dehydration, vasopressin concentrations increased significantly in both groups of horses, but the increase was significantly greater in Namib horses than in control horses. During rehydration, vasopressin levels fell, but fell significantly less in Namib horses. The change in vasopressin concentration correlated significantly with plasma osmolality (
r = 0.88,
p < 0.001), and the relationship between these two variables was the same for both groups of horses during the dehydrated and rehydrated states. Aldosterone concentrations fell up to 48-h dehydration in both groups, but decreased significantly more in desert horses. From 48-h dehydration and during rehydration, aldosterone concentrations increased and the increase was sustained longer in Namib than in control horses. Changes in plasma osmolality did not correlate significantly with changes in aldosterone concentration. There were significant correlations between faecal moisture (%) and both vasopressin and aldosterone concentrations (
r = −0.72,
p < 0.008;
r = 0.80,
p < 0.002, respectively). During the 12% dehydration, the Namib horses sustained higher plasma osmolalities and consequently vasopressin levels than the control horses. We conclude that plasma osmolality in conjunction with these two hormones plays a significant role in water homeostasis in horses. |
| doi_str_mv | 10.1016/0031-9384(93)90103-M |
| format | Article |
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r = 0.88,
p < 0.001), and the relationship between these two variables was the same for both groups of horses during the dehydrated and rehydrated states. Aldosterone concentrations fell up to 48-h dehydration in both groups, but decreased significantly more in desert horses. From 48-h dehydration and during rehydration, aldosterone concentrations increased and the increase was sustained longer in Namib than in control horses. Changes in plasma osmolality did not correlate significantly with changes in aldosterone concentration. There were significant correlations between faecal moisture (%) and both vasopressin and aldosterone concentrations (
r = −0.72,
p < 0.008;
r = 0.80,
p < 0.002, respectively). During the 12% dehydration, the Namib horses sustained higher plasma osmolalities and consequently vasopressin levels than the control horses. We conclude that plasma osmolality in conjunction with these two hormones plays a significant role in water homeostasis in horses.</description><identifier>ISSN: 0031-9384</identifier><identifier>EISSN: 1873-507X</identifier><identifier>DOI: 10.1016/0031-9384(93)90103-M</identifier><identifier>PMID: 8372114</identifier><language>eng</language><publisher>Cambridge: Elsevier Inc</publisher><subject>Acclimatization - physiology ; Aldosterone - blood ; Animals ; Biological and medical sciences ; Desert Climate ; Drinking - physiology ; Female ; Fundamental and applied biological sciences. Psychology ; Hormones ; Horses ; Horses - blood ; Hydration ; Male ; Metabolisms and neurohumoral controls ; Vasopressins - blood ; Vertebrates: anatomy and physiology, studies on body, several organs or systems ; Water and mineral metabolism. Osmoregulation. Acidobasic balance ; Water Deprivation - physiology ; Water-Electrolyte Balance - physiology</subject><ispartof>Physiology & behavior, 1993-08, Vol.54 (2), p.223-228</ispartof><rights>1993</rights><rights>1993 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c386t-9af999c47c18735ad214310bba660417e8127ccd731eb92a05eec40d2aff35f23</citedby><cites>FETCH-LOGICAL-c386t-9af999c47c18735ad214310bba660417e8127ccd731eb92a05eec40d2aff35f23</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/0031-9384(93)90103-M$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3549,27923,27924,45994</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=4847864$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/8372114$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Sneddon, Jennifer C</creatorcontrib><creatorcontrib>Van der Walt, J</creatorcontrib><creatorcontrib>Mitchell, G</creatorcontrib><creatorcontrib>Hammer, S</creatorcontrib><creatorcontrib>Taljaard, J.J.F</creatorcontrib><title>Effects of dehydration and rehydration on plasma vasopressin and aldosterone in horses</title><title>Physiology & behavior</title><addtitle>Physiol Behav</addtitle><description>We have investigated the change in plasma vasopressin and aldosterone concentrations in Namib (desert-adapted) and in control horses from a subtropical region, during an acute 12% dehydration and during rehydration, while food was available. During dehydration, vasopressin concentrations increased significantly in both groups of horses, but the increase was significantly greater in Namib horses than in control horses. During rehydration, vasopressin levels fell, but fell significantly less in Namib horses. The change in vasopressin concentration correlated significantly with plasma osmolality (
r = 0.88,
p < 0.001), and the relationship between these two variables was the same for both groups of horses during the dehydrated and rehydrated states. Aldosterone concentrations fell up to 48-h dehydration in both groups, but decreased significantly more in desert horses. From 48-h dehydration and during rehydration, aldosterone concentrations increased and the increase was sustained longer in Namib than in control horses. Changes in plasma osmolality did not correlate significantly with changes in aldosterone concentration. There were significant correlations between faecal moisture (%) and both vasopressin and aldosterone concentrations (
r = −0.72,
p < 0.008;
r = 0.80,
p < 0.002, respectively). During the 12% dehydration, the Namib horses sustained higher plasma osmolalities and consequently vasopressin levels than the control horses. We conclude that plasma osmolality in conjunction with these two hormones plays a significant role in water homeostasis in horses.</description><subject>Acclimatization - physiology</subject><subject>Aldosterone - blood</subject><subject>Animals</subject><subject>Biological and medical sciences</subject><subject>Desert Climate</subject><subject>Drinking - physiology</subject><subject>Female</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Hormones</subject><subject>Horses</subject><subject>Horses - blood</subject><subject>Hydration</subject><subject>Male</subject><subject>Metabolisms and neurohumoral controls</subject><subject>Vasopressins - blood</subject><subject>Vertebrates: anatomy and physiology, studies on body, several organs or systems</subject><subject>Water and mineral metabolism. Osmoregulation. Acidobasic balance</subject><subject>Water Deprivation - physiology</subject><subject>Water-Electrolyte Balance - physiology</subject><issn>0031-9384</issn><issn>1873-507X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1993</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNp9kMFq3DAQQEVJSbdp_yABH0JoD24lS7asS6GETVpIyCUJvYlZaURUvNZW4w3k7yN3l6WnikFCM2-G4TF2KvgXwUX3lXMpaiN79cnIz4YLLuvbN2whei3rlutfR2xxQN6x90S_eTlSyWN23EvdCKEW7HEZArqJqhQqj08vPsMU01jB6Kv8z7_EZgBaQ_UMlDYZieKOgsEnmjCnEauSekqZkD6wtwEGwo_794Q9XC3vL3_UN3fXPy-_39RO9t1UGwjGGKe0m7duwTdCScFXK-g6roTGXjTaOa-lwJVpgLeITnHfQAiyDY08YRe7uZuc_myRJruO5HAYYMS0Jatb0xnJTQHVDnQ5EWUMdpPjGvKLFdzOOu3sys6uymX_6rS3pe1sP3-7WqM_NO39lfr5vg7kYAgZRhfpgKle6b6bsW87DIuL54jZkos4OvQxF_vWp_j_PV4BLQWRuA</recordid><startdate>19930801</startdate><enddate>19930801</enddate><creator>Sneddon, Jennifer C</creator><creator>Van der Walt, J</creator><creator>Mitchell, G</creator><creator>Hammer, S</creator><creator>Taljaard, J.J.F</creator><general>Elsevier Inc</general><general>Elsevier</general><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>19930801</creationdate><title>Effects of dehydration and rehydration on plasma vasopressin and aldosterone in horses</title><author>Sneddon, Jennifer C ; Van der Walt, J ; Mitchell, G ; Hammer, S ; Taljaard, J.J.F</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c386t-9af999c47c18735ad214310bba660417e8127ccd731eb92a05eec40d2aff35f23</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1993</creationdate><topic>Acclimatization - physiology</topic><topic>Aldosterone - blood</topic><topic>Animals</topic><topic>Biological and medical sciences</topic><topic>Desert Climate</topic><topic>Drinking - physiology</topic><topic>Female</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>Hormones</topic><topic>Horses</topic><topic>Horses - blood</topic><topic>Hydration</topic><topic>Male</topic><topic>Metabolisms and neurohumoral controls</topic><topic>Vasopressins - blood</topic><topic>Vertebrates: anatomy and physiology, studies on body, several organs or systems</topic><topic>Water and mineral metabolism. Osmoregulation. Acidobasic balance</topic><topic>Water Deprivation - physiology</topic><topic>Water-Electrolyte Balance - physiology</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Sneddon, Jennifer C</creatorcontrib><creatorcontrib>Van der Walt, J</creatorcontrib><creatorcontrib>Mitchell, G</creatorcontrib><creatorcontrib>Hammer, S</creatorcontrib><creatorcontrib>Taljaard, J.J.F</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>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Physiology & behavior</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Sneddon, Jennifer C</au><au>Van der Walt, J</au><au>Mitchell, G</au><au>Hammer, S</au><au>Taljaard, J.J.F</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effects of dehydration and rehydration on plasma vasopressin and aldosterone in horses</atitle><jtitle>Physiology & behavior</jtitle><addtitle>Physiol Behav</addtitle><date>1993-08-01</date><risdate>1993</risdate><volume>54</volume><issue>2</issue><spage>223</spage><epage>228</epage><pages>223-228</pages><issn>0031-9384</issn><eissn>1873-507X</eissn><abstract>We have investigated the change in plasma vasopressin and aldosterone concentrations in Namib (desert-adapted) and in control horses from a subtropical region, during an acute 12% dehydration and during rehydration, while food was available. During dehydration, vasopressin concentrations increased significantly in both groups of horses, but the increase was significantly greater in Namib horses than in control horses. During rehydration, vasopressin levels fell, but fell significantly less in Namib horses. The change in vasopressin concentration correlated significantly with plasma osmolality (
r = 0.88,
p < 0.001), and the relationship between these two variables was the same for both groups of horses during the dehydrated and rehydrated states. Aldosterone concentrations fell up to 48-h dehydration in both groups, but decreased significantly more in desert horses. From 48-h dehydration and during rehydration, aldosterone concentrations increased and the increase was sustained longer in Namib than in control horses. Changes in plasma osmolality did not correlate significantly with changes in aldosterone concentration. There were significant correlations between faecal moisture (%) and both vasopressin and aldosterone concentrations (
r = −0.72,
p < 0.008;
r = 0.80,
p < 0.002, respectively). During the 12% dehydration, the Namib horses sustained higher plasma osmolalities and consequently vasopressin levels than the control horses. We conclude that plasma osmolality in conjunction with these two hormones plays a significant role in water homeostasis in horses.</abstract><cop>Cambridge</cop><cop>New York, NY</cop><pub>Elsevier Inc</pub><pmid>8372114</pmid><doi>10.1016/0031-9384(93)90103-M</doi><tpages>6</tpages></addata></record> |
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| subjects | Acclimatization - physiology Aldosterone - blood Animals Biological and medical sciences Desert Climate Drinking - physiology Female Fundamental and applied biological sciences. Psychology Hormones Horses Horses - blood Hydration Male Metabolisms and neurohumoral controls Vasopressins - blood Vertebrates: anatomy and physiology, studies on body, several organs or systems Water and mineral metabolism. Osmoregulation. Acidobasic balance Water Deprivation - physiology Water-Electrolyte Balance - physiology |
| title | Effects of dehydration and rehydration on plasma vasopressin and aldosterone in horses |
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