The color change of the AuNP solution can reveal experimental results more conveniently, and the color-based assay can be more easily operated

1 Introduction Ulcerative colitis (UC) is a chronic, relapsing form of inflammatory bowel disease (IBD) characterized by immune system dysfunction and pathological overactivation of mucosal immune responses, leading to persistent inflammation and subsequent colonic mucosal injury ( Sirtuins (SIRTs) represent a family of evolutionarily conserved enzymes that are dependent on NAD + , categorized into seven distinct members (SIRT1 through SIRT7) ( + -dependent deacetylase sirtuin-1 (SIRT1) meticulously regulates a variety of substrates, such as histone and non-histone proteins, thereby producing significant effects on metabolic homeostasis, apoptosis regulation, inflammatory responses, attenuation of oxidative stress, and even the aging process ( Signal transducer and activator of transcription 3 (STAT3), a crucial cytoplasmic transcription factor in the STAT family, consists of 770 amino acids and possesses a complex domain structure, facilitating its diverse roles in cell signaling and gene regulation ( Short peptides are distinctive biomolecules that combine the benefits of traditional small molecules and mature proteins, offering new, more effective therapeutic agents with fewer side effects ( 2+ affinity comparable to that of albumins copper transport sites, forming an in vivo complex, glycyl-L-histidyl-L-lysine-Cu 2+ (GHK-Cu), which enhances its bioavailability (Figure 1A

Studies using rat models with transected Achilles tendons showed BPC-157 treatment resulted in accelerated recovery with increased load to failure, superior Achilles Functional Index scores, enhanced mononuclear cell infiltration, improved collagen fiber organization, and smaller persistent defects compared to untreated controls
Nitric oxide mediates rat mucosal vasodilatation induced by intragastric capsaicin
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