Sequela of complex craniomaxillofacial trauma is common. We report a previously undocumented, highly unusual, postfacial trauma presentation of a "nasomalar ball-valve fistula." The clinical presentation was a sharp influx of air into the left malar subcutaneous space with each nasal inspiration, followed by near-complete deflation upon each expiration. We also report a very simple and elegant solution of using a nasal trumpet to completely resolve this problem without the need for additional operation. The final recovery was uneventful. We hope to make all facial surgeons aware of this diagnosis and to remind them to keep this simple device in their armamentarium to address similar issues.
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http://dx.doi.org/10.1097/GOX.0000000000004312 | DOI Listing |
ACS Omega
December 2024
SupraSelen Laboratory, Department of Chemistry, Universidade Federal Fluminense, Institute of Chemistry, Campus do Valonguinho, 24020-141 Niterói-RJ, Brazil.
Our research presents selective direct selenylation at the C-4 pyrazole ring using KSO as an oxidant under simple and mild conditions. This elegant synthesis involves the one-pot method under acidic conditions, thus minimizing reaction steps and waste generation. This innovative method allowed us to create a library of 4-selanylpyrazoles in good to excellent yields.
View Article and Find Full Text PDFSubcell Biochem
December 2024
Centro de Biología Molecular "Severo Ochoa" (CSIC-UAM) and Department of Molecular Biology, Universidad Autónoma de Madrid, Madrid, Spain.
Icosahedral viruses exhibit elegant pathways of capsid assembly and maturation regulated by symmetry principles. Assembly is a dynamic process driven by consecutive and genetically programmed morphogenetic interactions between protein subunits. The non-symmetric capsid subunits are gathered by non-covalent contacts and interactions in assembly intermediates, which serve as blocks to build a symmetric capsid.
View Article and Find Full Text PDFSubcell Biochem
December 2024
Department of Macromolecular Structure, Centro Nacional de Biotecnología (CNB-CSIC), Madrid, Spain.
Viruses are elegant macromolecular assemblies and constitute a paradigm of the economy of genomic resources; they must use simple general principles to complete their life cycles successfully. Viruses need only one or a few different capsid structural subunits to build an infectious particle, which is possible for two reasons: extensive use of symmetry and built-in conformational flexibility. Although viruses come in many shapes and sizes, two major symmetric assemblies are found: icosahedral and helical.
View Article and Find Full Text PDFJ Colloid Interface Sci
December 2024
School of Environmental and Materials Engineering, Yantai University, Yantai 264005, China. Electronic address:
Proc Natl Acad Sci U S A
December 2024
Institute of Science and Technology Austria, Klosterneuburg 3400, Austria.
Spatial games provide a simple and elegant mathematical model to study the evolution of cooperation in networks. In spatial games, individuals reside in vertices, adopt simple strategies, and interact with neighbors to receive a payoff. Depending on their own and neighbors' payoffs, individuals can change their strategy.
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