A simple and effective way to make DNA patchy particles is reported. A small patch of DNA strands is "stamped" from a gold surface onto colloidal particles of different sizes by streptavidin-biotin bonds. These DNA patchy particles provide direction-selective and thermoreversible interactions, and hence can lead to unique assembly protocols and structures controlled by temperature.
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http://dx.doi.org/10.1002/adma.201204864 | DOI Listing |
Dermatopathology (Basel)
December 2024
Department of Pathology & Immunology, Baylor College of Medicine, Houston, TX 77030, USA.
Malignant proliferating trichilemmal tumors (MPTTs), arising from the external root sheath of hair follicles, are exceptionally rare, with limited documentation of their genetic alterations. We present a case of a 64-year-old African American woman who initially presented with a gradually enlarging nodule on her posterior scalp. An initial biopsy at an outside hospital suggested metastatic adenocarcinoma or squamous cell carcinoma (SCC) of an uncertain origin.
View Article and Find Full Text PDFClin Neurol Neurosurg
December 2024
Department of Neurosciences and Mental Health, Unidade Local de Saúde de Santa Maria, Lisbon, Portugal; Faculdade de Medicina-Instituto de Medicina Molecular, Centro de Estudos Egas Moniz, Universidade de Lisboa, Lisbon, Portugal.
Objective: To present cases of ptosis in HIV-1 patients on long-term antiretroviral therapy (ART) and review the existing literature.
Methods: Five HIV-1-positive patients with slowly progressive bilateral ptosis underwent a comprehensive diagnostic evaluation, including imaging studies, neurophysiological testing, muscle biopsy, and genetic analysis. A literature review was conducted.
ACS Nano
December 2024
Dipartimento di Fisica, Sapienza Università di Roma, P. le Aldo Moro 5, 00185 Rome, Italy.
One of the frontiers of nanotechnology is advancing beyond the periodic self-assembly of materials. Icosahedral quasicrystals, aperiodic in all directions, represent one of the most challenging targets that has yet to be experimentally realized at the colloidal scale. Previous attempts have required meticulous human-designed building blocks and often resulted in interactions beyond the current experimental capabilities.
View Article and Find Full Text PDFNano Lett
January 2025
KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul 02841, Republic of Korea.
Over the last three decades, colloidal crystallization has provided an easy-to-craft platform for mesoscale engineering of photonic and phononic crystals. Nevertheless, the crystal lattices achieved thus far with commodity colloids are largely limited to symmetric and densely packed structures, restricting their functionalities. To obtain non-close-packed crystals and the resulting complexity of the available structures, directional binding between "patchy" colloids has been pursued.
View Article and Find Full Text PDFCureus
November 2024
Radiology, The Second Health Cluster, Jeddah, SAU.
Diffuse alveolar hemorrhage (DAH) is a rare but severe pulmonary complication in systemic lupus erythematosus (SLE), characterized by alveolar bleeding leading to respiratory distress, hypoxemia, and often hemoptysis. Rapid diagnosis and aggressive immunosuppressive therapy are crucial for survival. A 55-year-old woman with a five-year history of SLE presented with acute dyspnea, hemoptysis, pleuritic chest pain, fatigue, and low-grade fever.
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