Osteoarthritis / joint degeneration

Intra-articular BPC-157 relieved knee pain in a small retrospective case series and shows tendon/ligament/cartilage repair signals in preclinical work, but controlled OA trials are lacking.

Serum and synovial-fluid thymosin beta-4 rise with radiographic OA severity, and its TMSB4 pseudogene lncRNA promotes cartilage degradation - marking it a severity biomarker rather than a clear-cut repair agent.

AICAR-driven AMPK activation blunted biomechanical-injury and IL-1beta-induced CHOP, NO and MMP-3 catabolic responses in chondrocytes, suggesting a chondroprotective mechanism (in vitro/ex vivo).

In mouse OA and LPS-stimulated chondrocytes, MOTS-c reduced mitochondrial dysfunction, NLRP3 pyroptosis and matrix loss via an Nrf2/TXNIP axis, delaying cartilage degeneration.

Metformin is a leading AMPK-activator OA candidate, but a primary-care cohort of type 2 diabetics found no association between metformin use and reduced OA incidence (adjusted HR 1.02).

In human OA chondrocytes, alpha-MSH down-modulated TNF-alpha/IL-1beta-induced MMP-3 and iNOS and raised TIMP-3, indicating anti-inflammatory chondroprotective potential (in vitro only).