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| http://dx.doi.org/10.18632/aging.204951 | DOI Listing |
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Simultaneous Lefort 2 Distraction and Fronto-Orbito-Malar Advancement: Correcting Severe Upper and Midface Retrusion in a Patient With Crouzon Syndrome.
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Member of Sociedad Argentina de Ortodoncia, Member of International Society of Craneofacial Surgery, Member of Asociación Latinoamericana de Ortodoncia, Buenos Aires, Argentina.
Craniofacial syndromes present with exorbitism and airway obstruction as a result of upper and middle facial hypoplasia. Classical subcranial Lefort III (LF III) or monobloc distraction osteogenesis (DO) using an external craniofacial device is used to treat these deformities. These procedures are done during mixed dentition, in most cases, advancing an abnormal face, to a more normal position.
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December 2024
Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.
Background: Stronger default mode (DMN) and bilateral frontoparietal control network (FPCN) resting-state functional connectivity are associated with reduced β-amyloid (Aβ)-related cognitive decline in cognitively unimpaired older adults, who were predominantly Aβ negative. This suggests that these networks might support cognitive resilience in the face of early AD pathology but it remains unclear whether these effects are apparent in preclinical AD. We investigated whether left-FPCN, right-FPCN, and DMN connectivity moderated the effect of Aβ on cognitive decline using a large multi-site dataset from the Anti-Amyloid Treatment in Asymptomatic Alzheimer's Disease (A4) study.
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Background: A rare reelin gene variant (RELN-COLBOS mutation) delayed dementia onset in almost 30 years in an autosomal dominant Alzheimer's disease (ADAD) carrier. This patient presented with high amyloid-β (Aβ) plaque load, but low tau accumulation, suggesting that this single-nucleotide polymorphism (SNP) in RELN conferred a resilience not only to cognitive decline but also to tauopathy in ADAD. However, whether RELN SNPs are also protective in sporadic Alzheimer's disease (AD) is yet to be determined.
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