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Updated: Jul 15, 2026
08:42
Using Multi-fluorinated Bile Acids and In Vivo Magnetic Resonance Imaging to Measure Bile Acid Transport
Published on: November 27, 2016
Leptin regulates gallbladder genes related to absorption and secretion
Deborah A Swartz-Basile1, Debao Lu, David P Basile
1Department of Surgery, Indiana University School of Medicine, 535 Barnhill Drive, RT 130D, Indianapolis, IN 46202, USA.
Summary
Leptin treatment in obese mice normalized gallbladder function by altering water and ion transport genes. This study reveals leptin
Area of Science:
- Physiology
- Molecular Biology
- Gastroenterology
Background:
- Gallbladder ion and water transport dysregulation is linked to gallstone formation.
- Obese, leptin-deficient (Lep(ob)) mice exhibit impaired gallbladder function.
- The effect of leptin on gallbladder absorption/secretion remained unknown.
Purpose of the Study:
- To investigate leptin's impact on gallbladder gene expression related to water and ion transport.
- To determine if leptin influences gallbladder epithelial transport mechanisms.
Main Methods:
- Gene expression profiling using Affymetrix microarrays in leptin-treated vs. control Lep(ob) mice.
- Analysis of gallbladder volume, bile sodium concentration, and pH.
- Quantitative assessment of aquaporin and ion transporter gene expression.
Main Results:
- Leptin administration reduced gallbladder volume, bile sodium concentration, and pH.
- Upregulation of aquaporin 1 and carbonic anhydrase-IV; downregulation of aquaporin 4, epithelial sodium channel-alpha, and sodium hydrogen exchangers.
- Modulation of inflammatory cytokine gene expression observed.
Conclusions:
- Leptin influences gallbladder bile volume, sodium, and pH.
- Leptin affects the expression of genes involved in water, sodium, chloride, and bicarbonate transport.
- Leptin's role in regulating gallbladder function and potentially gallstone formation is highlighted.
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