Department of Pathology, School of Medicine, Cardiff University, Heath Park, Cardiff CF14 4XN, UK.
Published: March 2012
AI Article Synopsis
Article Abstract
The loss of telomere function can result in the fusion of telomeres with other telomeric loci, or non-telomeric double-stranded DNA breaks. Sequence analysis of fusion events between short dysfunctional telomeres in human cells has revealed that fusion is characterized by a distinct molecular signature consisting of extensive deletions and micro-homology at the fusion points. This signature is consistent with alternative error-prone end-joining processes. We have examined the role that Mre11 may play in the fusion of short telomeres in human cells; to do this, we have analysed telomere fusion events in cells derived from ataxia-telangiectasia-like disorder (ATLD) patients that exhibit hypomorphic mutations in MRE11. The telomere dynamics of ATLD fibroblasts were indistinguishable from wild-type fibroblasts and they were proficient in the fusion of short telomeres. However, we observed a high frequency of insertion of DNA sequences at the fusion points that created localized sequence duplications. These data indicate that Mre11 plays a role in the fusion of short dysfunctional telomeres in human cells and are consistent with the hypothesis that as part of the MRN complex it serves to stabilize the joining complex, thereby controlling the fidelity of the fusion reaction.
Background: Congenital scoliosis with progressive potential is a controversial subject in early-onset spinal deformities. The presence of a hemivertebra may produce severe spinal deformities. The evolution of a scoliotic curve in these cases is unpredictable and requires careful follow-up dependent on multiple variables, such as the location of the hemivertebra, the age of the patient at the time of diagnosis, and the degree of deformity already present in both sagittal and frontal planes.
Objective: To explore clinical effect of unilateral laminotomy for bilateral decompression (ULBD) under single channel endoscopic(Delta) in treating adjacent segment disease(ASD) after lumbar fusion.
Methods: A retrospective analysis of 24 patients who underwent spinal endoscopic ULBD after lumbar fusion was performed from January 2021 to January 2023, including 10 males and 14 females, aged from 54 to 77 years old with an average of (59.2±3.
Transferrin Receptor (TfR)-mediated transcytosis across the blood-brain barrier (BBB) enables the uptake of bispecific therapeutic antibodies into the brain. At therapeutically relevant concentrations, bivalent binding to TfR appears to reduce the transcytosis efficiency by receptor crosslinking. In this study, we aimed to improve BBB transcytosis of symmetric antibodies through minimizing their ability to cause TfR crosslinking.
Objective: This study aims to compare postoperative patient-reported outcome measures (PROMs) in predominant back pain (PBP) versus predominant leg pain (PLP) patients following lumbar fusion for degenerative spondylolisthesis (DS).
Summary Of Background Data: Prior studies comparing PROMs in patients undergoing lumbar fusion with PBP versus PLP symptoms have included heterogeneous spinal pathology and restricted analysis to posterior fusion techniques.
