The Claim

Optogenetic activation of interrenal cells in larval zebrafish expressing beggiatoa photoactivated adenylyl cyclase induces sustained increases in endogenous cortisol levels, providing a method to generate chronic hypercortisolaemia during early development in this model organism.

Source: Optogenetic induction of chronic glucocorticoid exposure in early‐life leads to blunted stress‐response in larval zebrafish

What the research says

Roughly balanced

Support and challenge are close. The picture may shift as more studies come in.

Supports
6score
Challenges
0score

These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

How it works
1 study reviewed
In plain English

Scientists used light to turn on special cells in baby zebrafish that make a stress hormone, and found it stayed high for a long time — showing a new way to study long-term stress in developing fish.

See the scientific wording

Optogenetic activation of interrenal cells in larval zebrafish expressing beggiatoa photoactivated adenylyl cyclase leads to sustained increases in endogenous cortisol levels, demonstrating a method for inducing chronic hypercortisolaemia during early development in this model organism.

What the research says

1 study

  1. Study: Optogenetic induction of chronic glucocorticoid exposure in early‐life leads to blunted stress‐response in larval zebrafish

    The study used light to turn on cortisol-producing cells in baby zebrafish and found it caused long-lasting high cortisol levels, just like the claim says.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies

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