Factors that influence recurrent lumbar disc herniation HKMJ Guiding significance of the autophagy intensity of lumbar intervertebral discs and the Charlson Comorbidity Index in predicting the postoperative curative effect of patients with single level lumbar disc herniation Scientific Reports Modulatory effects of BPC 157 on vasomotor tone and the activation of Src Caveolin 1 endothelial nitric oxide synthase pathway Scientific Reports BPC 157 Orthobiologics Associates Percutaneous endoscopic lumbar discectomy combined with platelet rich plasma injection for lumbar disc herniation: analysis of clinical and imaging outcomes BMC Musculoskeletal Disorders Springer Nature Link