Positional cloning of the mouse obese gene and its human homologue.
Level 5 - mechanism / opinion, no new human data
Bench and animal genetic research (positional cloning).
PubMed 7984236 · doi:10.1038/372425a0
What was done
Positional cloning was used to isolate and identify the mouse obese (ob) gene and its human homologue to investigate the molecular regulation of energy balance. Specific methodological details and sample sizes are not reported in the abstract.
What was found
The abstract reports no numerical data. The authors state that mutation of the ob gene results in profound obesity and type II diabetes in mice, and that the identified gene product functions as part of an adipose-derived signaling pathway regulating body fat depot size.
Why it matters
This landmark study identified the genetic basis of the ob mutation and its human homologue, laying the groundwork for understanding hormonal regulation of adipose tissue and body weight.
Limits
The abstract provides no sample sizes, numerical values, or statistical metrics. The findings represent preclinical animal and laboratory molecular genetics, which do not directly demonstrate clinical treatment effects in humans.
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