The Claim
Exposure to 10 mM calcium induces a growth-phase-dependent shift in iron acquisition pathways in Pseudomonas aeruginosa, resulting in an 8.5-fold increase in pyoverdine production during mid-log phase, a 6.9-fold increase in pyoverdine production during stationary phase, and a reduction in pyochelin biosynthesis during stationary phase.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
When Pseudomonas aeruginosa bacteria are exposed to 10 mM calcium, their iron uptake system changes depending on their growth stage: they produce more pyoverdine in both mid-log and stationary phases, and less pyochelin during stationary phase.
See the scientific wording
Calcium exposure (10 mM) induces a growth-phase-dependent shift in iron acquisition pathways in Pseudomonas aeruginosa, increasing pyoverdine production by 8.5-fold in mid-log phase and 6.9-fold in stationary phase, while reducing pyochelin biosynthesis during stationary phase, suggesting a strategic transition from low- to high-affinity iron scavenging.
When calcium levels rise, the bacteria stop using a weak iron-stealing tool and start making a much stronger one, while also switching off other iron-scavenging methods that are less efficient. This lets them grab iron more effectively from the host, especially when iron is hard to find.
What the research says
1 studyStudy: Calcium regulation of Pseudomonas aeruginosa metabolism.
When there's more calcium, the bacteria that cause lung infections in cystic fibrosis patients switch from using a weak iron-stealing tool to a much stronger one, helping them survive better in the lungs.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.