free fatty acid assay kit colorimetric  (Cell Biolabs Inc)

Journal: Molecular Metabolism

Article Title: Nutrient-driven histone acetylation underlies energy storage and mobilization

doi: 10.1016/j.molmet.2026.102344

Figure Lengend Snippet: BHB-mediated HDAC inhibition shifts hepatic anabolism toward lipid oxidation. (A) Experimental design. (B) Serum gross appearance and the FFA levels ( n = 5). (C) Body weight loss of mice with the indicated treatment ( n = 5). (D and E) ChIP-seq data displaying H3K27ac (D) or BRD4 (E) occupancy at two subsets of genes: H3K27ac and BRD4 enriched at the genomic loci of fasting-induced transcripts (energy mobilization associated genes, such as Cyp4a14), but dislodged from those loci of fasting-suppressed transcripts (energy storage-associated genes, such as Pcsk9). (ref. to Hsieh et al., 2022, Mol Cell for detail method of analysis). (F and G) GO enrichment analysis of the fasting-induced H3K27ac (F) and BRD4 (G) peak-associated genes. The reads number of the ChIP-seq data for H3K27ac (log2FC > 1 and P < 0.01) or BRD4 (log2FC > 1.2 and P < 0.01) were included as the fasting-induced peaks. (H and I) Gene tracks display that fasting induced the occupancy of H3K27ac and BRD4 at the genomic loci of energy mobilization-associated genes (Cyp4a14, Pck1) (H), but reduced at those loci of energy storage-associated genes (Pcsk9, Srebf1) (I). (J) The ratio of the liver to body weight (upper panel) and the liver triglycerides levels (lower panel) of mice with the indicated treatment ( n = 5). (K-O) Body weight loss data (K), serum gross appearance and FFA levels (L), the blood glucose and BHB levels (M), the ratio of liver to body weight (N) and Liver triglycerides (O)of Brd 4 -flox or Brd4 hKO mice subjected to 24 h of fasting ( n = 5). Data are shown as the mean ± SEM. ∗ P < 0.05, ∗∗ P < 0.01, ∗∗∗ P < 0.001, ∗∗∗∗ P < 0.0001 by unpaired two-tailed Student’s t-test (K-O) or one-way ANOVA followed with Bonferroni’s multiple comparisons test (B, C, and J).

Article Snippet: Biochemical parameters, including serum and hepatic triglycerides (AKFA003M, BOXBIO), FFA (E-BC-K792-M, Elabscience), and ALT (E-BC-K235-M96T, Elabscience) were measured using commercial kits according to the manufacturer’s instructions.

Techniques: Inhibition, ChIP-sequencing, Two Tailed Test

Journal: Comprehensive Physiology

Article Title: Systemic Consequences of Chronic Ethanol Intake: From Microbiome Shifts to Metabolic Impairment

doi: 10.1002/cph4.70132

Figure Lengend Snippet: Chronic EtOH induces gut permeability, hepatic injury & inflammation. (A, B) Indirect makers of intestinal barrier dysfunction: Serum LPS and zonulin. (C, D) Serum markers of hepatic injury: ALT and AST. (E–I) Liver pro‐inflammatory markers: TNFα and IL‐6 protein expression, and the acute‐phase protein serum amyloid A quantified using a colorimetric ELISA (Panel H; gray outlines indicate standards; blue, control; orange, EtOH). Statistical analyses included unpaired t ‐tests or Welch's t ‐tests. *Significantly different from control group ( p < 0.05). Data are presented as mean ± SEM. Samples sizes were 6–7 for controls and 8–9 for EtOH.

Article Snippet: Free fatty acids (FFAs) in subcutaneous WAT were quantified using an enzymatic colorimetric assay kit (Cat # E‐BC‐K013‐S, Elabscience Laboratories).

Techniques: Permeability, Expressing, Enzyme-linked Immunosorbent Assay, Control