Journal: Journal of Sport and Health Science

Article Title: Weightlifting outperforms voluntary wheel running for improving adiposity and insulin sensitivity in obese mice

doi: 10.1016/j.jshs.2025.101100

Figure Lengend Snippet: Resistance exercise exceeds the benefits of endurance exercise in ameliorating metabolic dysfunction. Following 8 weeks of diet and exercise interventions, all mice were assessed for their metabolic function by GTT, ITT, and skeletal muscle response of Akt and AS160 phosphorylation to injection of insulin measured by Western blot. (A–C) HOMA-IR taken after an overnight fast for baseline glucose and insulin. (D and E) GTT from 0–120 min and calculated AUC; colored * indicates significant difference from NC-SED. (F and G) ITT from 0–60 min and calculated AUC; colored * indicates significant difference from NC-SED. (H–N) pAkt stimulation, AS160 S318, and AS160 T642 in hindlimb muscles before and after insulin injection and the pre–post ∆ in phosphorylation. (O and P) Total and phosphorylated 4E-BP1. (Q–T) Western results for Raptor, COX4, LC3 II/I, and ubiquitin staining. Representative western blot images inset right. Data presented as mean ± standard error of the mean. Statistical analysis performed by analysis of variance between groups: * p < 0.05, ** p < 0.01, *** p < 0.001, and **** p < 0.0001. NC-SED n : 8–16 (white); HFD-SED n : 8–18 (red); HFD-R EX n : 8–16 (blue); HFD-E EX n : 8–15 (green). 4E-BP1 = Eukaryotic translation initiation factor 4E binding protein; Akt = protein kinase B; AS160 = Akt substrate 160; COX4 = cytochrome c oxidase 4; CS = citrate sythase; E EX = endurance exercise; GAPDH = glyceraldehyde 3 phosphate dehydrogenase; GTT = glucose tolerance test; HFD = high fat diet; HOMA-IR = homeostatic model assessment for insulin resistance; iAUC = integrated area under the curve; ITT = insulin tolerance test; LC3 II/I = microtubule-associated protein light chain 3; NC = normal chow; pAkt = phospho-Akt; R EX = resistance exercise; SED = sedentary; Ub = ubiquitin.

Article Snippet: Primary antibodies used for analysis were from Cell Signaling Technologies (Danvers, MA, USA) and diluted 1:1000 unless otherwise stated as follows: protein kinase B (Akt; 1:500; #4691; Cell Signaling Technologies), phospho-Akt (pAkt) S473 (1:500; #9271; Cell Signaling Technologies), Ubiquitin (#3933; Cell Signaling Technologies), microtubule-associated protein light chain 3 (LC3 II/I; #4018; Cell Signaling Technologies), cytochrome c oxidase subunit 4(COX4; #11967; Cell Signaling Technologies), Akt substrate 160 (AS160 S318; #8619; Cell Signaling Technologies), AS160 T642 (#8881; Cell Signaling Technologies), eukaryotic translation initiation factor 4E binding protein (4E-BP1; #9452; Cell Signaling Technologies), and glyceraldehyde 3 phosphate dehydrogenase (GAPDH; #2118; Cell Signaling Technologies).

Techniques: Phospho-proteomics, Injection, Western Blot, Muscles, Ubiquitin Proteomics, Staining, Binding Assay

Journal: Journal of Sport and Health Science

Article Title: Exercise training-induced extracellular miR-136-3p modulates glucose uptake and myogenesis through targeting of NRDC in human skeletal muscle

doi: 10.1016/j.jshs.2025.101091

Figure Lengend Snippet: miR-136-3p-induced increase in glucose uptake is independent of changes in canonical GLUT4 signaling pathways. The mRNA expression of GLUT4, TBC1D4, and AMPKα in primary human myotubes (A) transfected with miR-136-3p. Representative immunoblot and quantification of (B) AMPKα, (C) TBC1D4, (D) P-TBC1D4, (E) AKT, and (F) P-AKT in primary human myotubes transfected with miR-136-3p and subsequently incubated under basal or insulin-stimulated (120 nM, 1 h) conditions. Insets show representative Western blot image and total ponceau staining for loading control. Results are expressed as mean ± standard error of the mean. * p < 0.05, ** p < 0.005. AKT = protein kinase B; AMPKα = AMP-activated protein kinase α; GLUT4 = glucose transporter 4; miR = microRNA; NC = negative control; ns = no significance; P-AKT = phosphorylated AKT; P-TBC1D4 = phosphorylated TBC1D4; TBC1D4 = Tre-2/BUB2/CDC16 domain family member 4.

Article Snippet: Membranes were incubated with primary antibodies directed to NRDC (sc-137199; Santa Cruz Biotechnology, Dallas, TX, USA), AMP-activated protein kinase α (AMPKα) (#2532; Cell Signaling Technology, Danvers, MA, USA), Akt substrate of 160 kDa (AS160) (#2670; Cell Signaling Technology), phospho-AS160 (#8730; Cell Signaling Technology), protein kinase B (AKT) (#9272; Cell Signaling Technology), phospho-AKT (Ser473) (#9271; Cell Signaling Technology), or puromycin (MABE343; Merck Burlington, MA, USA).

Techniques: Protein-Protein interactions, Expressing, Transfection, Western Blot, Incubation, Staining, Control, Negative Control