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Event: 1768
Key Event Title
Increase, Abnormal osmoregulation
Short name
Biological Context
Level of Biological Organization |
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Tissue |
Organ term
Key Event Components
Key Event Overview
AOPs Including This Key Event
AOP Name | Role of event in AOP | Point of Contact | Author Status | OECD Status |
---|---|---|---|---|
Excessive ROS leading to mortality (1) | KeyEvent | You Song (send email) | Under development: Not open for comment. Do not cite | |
Decreased Na/K ATPase activity leads to Heart failure | KeyEvent | John Frisch (send email) | Under development: Not open for comment. Do not cite |
Taxonomic Applicability
Term | Scientific Term | Evidence | Link |
---|---|---|---|
Animals | Metazoa | High | NCBI |
Life Stages
Life stage | Evidence |
---|---|
All life stages | High |
Sex Applicability
Term | Evidence |
---|---|
Unspecific | High |
Key Event Description
Osmoregulation represents the active regulation of fluid volume and concentration of ions. Abnormal osmoregulation represents a loss of normal homeostatic conditions of ion concentrations and fluid volume, often due to a stressor. Organisms use active transport and diffusion to regulate ion concentrations through intake rates, and the ion concentration/fluid balance based on frequency and ion concentrations in excretion (ex. urine).
How It Is Measured or Detected
Osmolality can be measured using an osmometer. Specific ion concentrations can be measured via ion chromatography, spectrophotometry, or enzyme assays (Buzanovskii 2016).
Domain of Applicability
Life Stage: Applies to all life stages; not specific to any life stage.
Sex: Applies to both males and females; not sex-specific.
Taxonomic: Present broadly in animals that are active osmoregulators.
References
Buzanovskii, V.A. 2016. Ion chromatography, spectrophotometry, titrimetry, and gravimetry measurements of sodium concentration in the blood. Measurement Techniques 59(6): 678-683.
NOTE: Italics symbolize edits from John Frisch