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2 protocols using lithocholate

1

Bile Acid Standards for Mass Spectrometry

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A series of bile acid standards, containing cholate (CA), chenodeoxycholate (CDCA), ursodeoxycholate (UDCA), deoxycholate (DCA), lithocholate (LCA), glycocholate (GCA), glycochenodeoxycholic acid (GCDCA), glycodeoxycholate (GDCA), taurocholate (TCA), taurodeoxycholate (TDCA), tauroursodeoxycholate (TUDCA), taurohyodexoycholate (THDCA), taurochenodeoxycholate (TCDCA), taurolithocholate (TLCA) were purchased from Sigma-Aldrich (St. Louis, MO, USA). Tauro-β-muricholate (TβMCA) was purchased from Santa Cruz Biotechnology (Santa Cruz, CA, USA). As internal standard (IS), deoxycholic acid-2,2,4,4-d4 (DCA-d4) were obtained from CDN isotopes (Pointe-Claire, Quebec, Canada). All organic reagents for mass spectrometric analysis were HPLC grade purchased from Sigma-Aldrich (St. Louis, MO, USA). And spexin used for drug treatment was purchased from Phoenix Pharmaceuticals (Belmont, CA, USA). M871 was purchased from R&D Systems (Minneapolis, MN, USA). SNAP37889 was purchased from Key Organics Ltd (Camelford, Cornwall, UK).
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2

Detailed Reagent Acquisition for Mouse Colitis Study

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Reagent grade dextran sulfate sodium salt (DSS, M.W. 36–50 kDa, Ref = 160110) was purchased from MP Biomedicals (Solon, OH). Duoset ELISA kits for mouse Lcn2 and keratinocyte-derived chemokine CXCL1 (KC), serum amyloid A (SAA) and biotinylated murine Lcn2 antibody were obtained from R&D Systems (Minneapolis, MN). Hydrogen peroxide (H2O2), myeloperoxidase (MPO), hexadecyl trimethyl ammonium bromide, RNAlater®, TRI Reagent®, iron-free enterobactin (Ent), dimethyl sulfoxide, glucose, sodium taurocholate, glycocholate, lithocholate and deoxycholate were procured from Sigma-Aldrich (St. Louis, MO). Guaiacol (2-methoxyphenol) were obtained from Alfa Aesar (Ward Hill, MA). Erythromycin was purchased from Amresco (Solon, OH). The iron atomic absorption (AA) standard was purchased from RICCA Chemical Company. SYBR® Green mix and qScript cDNA synthesis kit were procured from Quanta Biosciences. Mouse recombinant (rec)-Lcn2 (free from endotoxin, siderophore, and iron) was obtained from Cell Signaling. All other chemicals used in the present study were reagent grade and procured from Sigma.
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