Predictive Power of Bone Turnover Biomarkers to Estimate Bone Mineral Density after Kidney Transplantation with or without Denosumab: A post hoc Analysis of the POSTOP Study.

BACKGROUND: Low bone mineral density (BMD) represents a major risk factor for bone fractures in patients with chronic kidney disease (CKD) as well as after kidney transplantation. However, modalities to solidly predict patients at fracture risk are yet to be defined. Better understanding of bone turnover biomarkers (BTMs) may close this diagnostic gap. This study strives to correlate BTMs to BMD in kidney transplant recipients. METHODS: Changes in BTMs - procollagen type I N-terminal propeptide (P1NP), bone-specific alkaline phosphatase (BSAP), ß-isomer of the C-terminal telopeptide of type I collagen, and urine deoxypyridinoline/Cr - at the time of transplant and 3 months were correlated to changes in BMD measured by dual-energy X-ray absorptiometry at the time of transplant, 6, and 12 months, respectively. Half of the collective was treated with denosumab twice yearly in addition to the standard treatment with calcium and vitamin D. RESULTS: Changes in bone formation markers BSAP and P1NP within 3 months showed a significant negative correlation to changes in BMD at the hip within 6 months in denosumab-naïve patients. This correlation was abrogated by denosumab treatment. CONCLUSIONS: Changes in BSAP and P1NP showed promise in short-term prediction of BMD. We suggest further trials expanding on the knowledge of these BTMs with assessment of fracture risk, sequential measurements of BTMs within the first 6 months, and the additional use of computed tomography to assess BMD.

Behavioral and emotional problems in children and adults with cerebral palsy.

OBJECTIVE: In patients with cerebral palsy (CP), psychological problems influence their participation in society. Little is known about the persistence of behavioral and social problems into adulthood. MATERIALS AND METHODS: In a two-center cross-sectional study, caregivers of 121 adults and 88 children were ask to assess behavior of the patients through the parent/caregiver forms of the Child Behavior Checklist (CBCL), the Strengths and Difficulties Questionnaire (SDQ), and the Vineland Adaptive Behavior Scale II (VABS). Questionnaires were returned from 43 adults and 39 children. RESULTS: In both groups we found the same frequency of abnormalities in attention problems (32.4 vs. 36.1%, p = 0.826) and social interaction problems (32.3 vs. 33.3%; p = 0.926) in the CBCL, and peer problems (38.9 vs. 75.7%; p = 0.115) in the SDQ. Children show a lower percentage of abnormal prosocial behavior (41.7 vs. 16.2%, p = 0.016) and lower abnormal rates of communication (88.2 vs. 61.5; p = 0.01) and daily living skills (90.0 vs. 71.8; p = 0.041), whereas the level of abnormalities in both groups in these dimensions of VABS notably high. CONCLUSION: The persistence of psychological and social problems from childhood into adulthood underlines the importance of focusing on early intervention.