Unilateral ureteral obstruction (UUO) is a widely used animal model to study renal pathophysiology and the progression of kidney injury. This study investigates the histopathological and biochemical changes in the kidneys of rats subjected to UUO. The rats were divided into two groups: the experimental group with unilateral ureteral obstruction and the control group. Kidney tissues were examined histologically for structural changes such as tubular dilation, fibrosis, and inflammation. Biochemical analyses measured key markers of renal function, including serum creatinine, blood urea nitrogen (BUN), and antioxidant enzyme activity. The findings revealed significant renal damage in the obstructed kidneys, with histopathological evidence of tissue injury and biochemical markers indicative of renal dysfunction. This study provides valuable insights into the mechanisms of kidney injury in UUO and emphasizes the need for therapeutic strategies to mitigate renal damage in obstructive nephropathy.

Cervical vertebral augmentation is a crucial procedure for addressing vertebral defects and promoting bone regeneration, particularly in the context of spinal injuries and degenerative diseases. Recent advancements in bioactive materials have opened up new possibilities for enhancing the efficacy of vertebral augmentation. This study investigates the role of parathyroid hormone (PTH) derivative bioactive materials in cervical vertebral augmentation using a sheep model. PTH derivatives have shown promising results in bone regeneration due to their osteoinductive properties, which stimulate the activity of osteoblasts and enhance bone formation. In this study, a sheep model was utilized to evaluate the effects of PTH derivative bioactive materials on cervical vertebral healing, focusing on parameters such as bone mineral density, structural integrity, and histological outcomes. The results demonstrated that PTH derivative bioactive materials significantly improved the healing process of cervical vertebral defects, providing insights into their potential clinical applications in spinal surgeries. The findings suggest that PTH-based bioactive materials could play a vital role in enhancing the success of cervical vertebral augmentation, offering a promising approach for regenerative medicine in spinal health.