Source 1review2010Current Opinion in Lipidology
Toolkit/PET detection of human brown adipose tissue
PET detection of human brown adipose tissue
Also known as: PET
Taxonomy: Technique Branch / Method. Workflows sit above the mechanism and technique branches rather than replacing them.
Summary
Human BAT can be detected using PET.
Usefulness & Problems
Why this is useful
PET is described as a way to detect human brown adipose tissue. The review links detectability to BAT metabolic activity.; detecting human brown adipose tissue in adults; assessing BAT activity under activating conditions such as cold exposure
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PET is described as a way to detect human brown adipose tissue. The review links detectability to BAT metabolic activity.
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detecting human brown adipose tissue in adults
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assessing BAT activity under activating conditions such as cold exposure
Problem solved
It addresses the need to identify functionally active BAT in adult humans in vivo.; provides an in vivo method to identify functionally active BAT in humans
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It addresses the need to identify functionally active BAT in adult humans in vivo.
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provides an in vivo method to identify functionally active BAT in humans
Problem links
provides an in vivo method to identify functionally active BAT in humans
LiteratureIt addresses the need to identify functionally active BAT in adult humans in vivo.
Source:
It addresses the need to identify functionally active BAT in adult humans in vivo.
Published Workflows
Objective: Detect functionally active brown adipose tissue in adult humans by imaging under conditions that increase thermogenic metabolic activity.
Why it works: The review states that PET can detect human BAT and that cold exposure increases detection probability because BAT metabolic activity rises during induced thermogenesis.
induced thermogenesiscold-activated metabolic activityPET imagingcold exposure
Stages
- 1.Cold exposure activation(functional_characterization)
The review states that cold exposure increases the probability of detecting brown fat because BAT becomes more metabolically active.
Selection: Increase BAT metabolic activity through induced thermogenesis before detection.
- 2.PET-based BAT detection(confirmatory_validation)
PET is described as the method used to detect human BAT, with detection probability improved by prior cold activation.
Selection: Detect human BAT after activation-enhanced metabolic signal is present.
Steps
- 1.Apply cold exposure to induce thermogenesis
Increase BAT metabolic activity so that BAT is more likely to be detected.
The review explicitly states that cold exposure increases the probability of detection by raising metabolic activity.
- 2.Detect BAT using PETdetection method
Identify human BAT in vivo after activation-enhanced metabolic signal is present.
Imaging follows cold exposure because the review states that activated BAT is more detectable.
Taxonomy & Function
Primary hierarchy
Technique Branch
Method: A concrete measurement method used to characterize an engineered system.
Techniques
Functional AssayTarget processes
recombinationImplementation Constraints
cofactor dependency: cofactor requirement unknownencoding mode: genetically encodedimplementation constraint: context specific validationoperating role: sensor
This approach requires PET imaging and, when stronger detection is desired, cold exposure to activate thermogenesis.; requires PET imaging; cold exposure may be needed to increase detection probability
The abstract does not show that PET alone resolves lineage, cell identity, or all regulatory mechanisms of BAT.; detection depends on metabolic activity state, with lower detectability at normal room temperature implied by the abstract
Validation
Cell-freeBacteriaMammalianMouseHumanTherapeuticIndep. Replication
Supporting Sources
Ranked Claims
Cold exposure increases the probability of detecting brown fat because induced thermogenesis increases metabolic activity.
Cold exposure increases the probability to detect brown fat due to increased metabolic activity by induced thermogenesis.
Human brown adipose tissue can be detected using PET.
Human BAT can be detected using PET.
BAT glucose uptake rate is 10-15-fold higher in cold than at normal room temperature.
BAT glucose uptake rate is 10-15-fold higher in cold than in normal room temperature.
glucose uptake rate increase in cold versus room temperature 10-15 fold
Approval Evidence
1 source3 linked approval claimsfirst-pass slug pet-detection-of-human-brown-adipose-tissue
Human BAT can be detected using PET.
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activation effectsupports
Cold exposure increases the probability of detecting brown fat because induced thermogenesis increases metabolic activity.
Cold exposure increases the probability to detect brown fat due to increased metabolic activity by induced thermogenesis.
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detection methodsupports
Human brown adipose tissue can be detected using PET.
Human BAT can be detected using PET.
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metabolic changesupports
BAT glucose uptake rate is 10-15-fold higher in cold than at normal room temperature.
BAT glucose uptake rate is 10-15-fold higher in cold than in normal room temperature.
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Comparisons
Source-stated alternatives
No direct alternative detection method is named in the abstract.
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No direct alternative detection method is named in the abstract.
Source-backed strengths
explicitly described as able to detect human BAT; detection probability increases when BAT metabolic activity is stimulated by cold exposure
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explicitly described as able to detect human BAT
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detection probability increases when BAT metabolic activity is stimulated by cold exposure
Compared with barcoded Cre recombinase mRNA barcode platform
PET detection of human brown adipose tissue and barcoded Cre recombinase mRNA barcode platform address a similar problem space because they share recombination.
Shared frame: same top-level item type; shared target processes: recombination
Compared with calcium imaging
PET detection of human brown adipose tissue and calcium imaging address a similar problem space because they share recombination.
Shared frame: same top-level item type; shared target processes: recombination
Relative tradeoffs: appears more independently replicated.
Compared with two-photon excitation microscopy
PET detection of human brown adipose tissue and two-photon excitation microscopy address a similar problem space because they share recombination.
Shared frame: same top-level item type; shared target processes: recombination
Strengths here: looks easier to implement in practice.
Ranked Citations
- 1.