RGD Reference Report - Is survival time after hemorrhage a heritable, quantitative trait?: an initial assessment. - Rat Genome Database

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Is survival time after hemorrhage a heritable, quantitative trait?: an initial assessment.

Authors: Klemcke, HG  Baer, DG  Pankratz, VS  Cox, A  Cortez, DS  Garrett, MR  Joe, B  Ryan, KL 
Citation: Klemcke HG, etal., Shock. 2008 Jun;29(6):748-53.
RGD ID: 2302114
Pubmed: (View Article at PubMed) PMID:17998886
DOI: Full-text: DOI:10.1097/shk.0b013e31815cfe30

Enhancing survival to hemorrhage of both civilian and military patients is a major emphasis for trauma research. Previous observations in humans and outbred rats show differential survival to similar levels of hemorrhage. In an initial attempt to determine potential genetic components of such differential outcomes, survival time after a controlled hemorrhage was measured in 15 inbred strains of rats. Anesthetized rats were catheterized, and approximately 24 h later, 55% of the calculated blood volume was removed during a 26-min period from conscious unrestrained animals. Rats were observed for a maximum of 6 h. Survival time was 7.7-fold longer in the longest-lived strain (Brown Norway/Medical College of Wisconsin; 306 +/- 36 min; mean +/- SEM) than in the shortest-lived strain (DA; 40 +/- 5 min; P < or = 0.01). Mean survival times for the remaining inbred strains ranged from 273 +/- 44 to 49 +/- 4 min (Dahl-Salt Sensitive > Brown Norway > Munich Wistar Fromter> Dahl-Salt Resistant > Copenhagen > Noble > Spontaneous-hypertensive > Lewis > BDIX > Fawn Hooded Hypertensive > FISCHER 344 > Black agouti > PVG). The variance in the hazard of death attributable to different strains was estimated to be 1.22 log-hazard units, corresponding to a heritability of approximately 48%. Graded and divergent survival times to hemorrhage in inbred rat strains are remarkable and suggest multiple genetic components for this characteristic. However, this interpretation of differential responses to hemorrhage may be confounded by potential strain-associated differences related to the surgical preparation. Identification of inbred strains divergent in survival time to hemorrhage provides the opportunity for future use of these strains to identify genes associated with this complex response.



Phenotype Annotations    

Mammalian Phenotype

Phenotype Values via PhenoMiner     Click to see Annotation Detail View
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Strains with Phenominer Data Strains with phenominer data
COP/OlaHsd SHR/NHsd FHH/EurMcwiCrl
MWF/Hsd F344/NHsd PVG/OlaHsd
SS/HsdMcwiCrl BN/Crl Crl:SD
NBL/CrCrl ACI/Eur LEW/NHsd
SR/Hsd DA/Bkl BN/HsdMcwiCrl
BDIX/CrCrl ACI/SegHsd DA/OlaHsd
ACI/EurMcwi COP/CrCrl

Objects Annotated

Strains
ACI/SegHsd  (NA)
BN/NHsdMcwi  (NA)
COP/OlaHsd  (NA)
F344/NHsd  (F344/NHsd)
LEW/NHsd  (NA)
PVG/OlaHsd  (NA)
SR/JrHsd  (Dahl Salt-Resistant)
SS/HsdMcwiCrl  (NA)

Objects referenced in this article
Strain BN/Crl null Rattus norvegicus
Strain Crl:SD null Rattus norvegicus
Strain DA/OlaHsd null Rattus norvegicus
Strain FHH/EurMcwiCrl null Rattus norvegicus
Strain MWF/Hsd Munich Wistar Fromter Rattus norvegicus
Strain SHR/NHsd null Rattus norvegicus

Additional Information