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A Rare Presentation of Synchronous Thyroglossal Cyst and Branchial Cyst in an Adult Male Patient.
Cureus
November 2024
Otolaryngology - Head and Neck Surgery, Shri B.M. Patil Medical College, Hospital and Research Centre, Vijayapura, IND.
The most common congenital cervical masses are thyroglossal cysts followed by branchial cleft anomalies. However, their synchronous presentation is uncommon. A man in his early thirties visited our ear, nose, and throat (ENT) outpatient department (OPD) with complaints of a three-month history of right-side neck swelling.
View Article and Find Full Text PDFNeutral 4π-electron tetrasilacyclobutadiene contains unusual features of a Möbius-type aromatic ring.
Commun Chem
December 2024
Anorganische Chemie, Universität Göttingen, Göttingen, Germany.
The search for stable compounds containing an antiaromatic cyclic 4π system is a challenge for inventive chemists that can look back on a long history. Here we report the isolation and characterization of the novel 4π-electron tetrasilacyclobutadiene, an analogue of a 4π neutral cyclobutadiene that exhibits surprising features of a Möbius-type aromatic ring. Reduction of RSiCl (R = (Pr)PCH) with KC in the presence of cycloalkyl amino-carbene (cAAC) led to the formation of corresponding silylene 1.
View Article and Find Full Text PDFFilicinic Acid-Based Meroterpenoids with Antiproliferative Activity against Prostate Cancer PC-3 Cells from .
J Org Chem
December 2024
Department of Pharmacy, The First Affiliated Hospital, Jinan University, Guangzhou 510630, China.
Nine new structurally diverse filicinic acid-based meroterpenoids (-) with four kinds of carbon skeletons were isolated from the rhizomes of . Their structures, including the absolute configurations, were elucidated by comprehensive analysis of spectroscopic data, quantum chemical calculations, and single-crystal X-ray diffraction. Structurally, compounds - feature an unprecedented 6/6/5/6/6/6 hexacyclic system with a rare oxaspiro[4.
View Article and Find Full Text PDFSPRTN metalloprotease participates in repair of ROS-mediated DNA-protein crosslinks.
Sci Rep
December 2024
Department of Medicinal Chemistry, University of Minnesota, Minneapolis, MN, 55455, USA.
Exposure to reactive oxygen species (ROS) can induce DNA-protein crosslinks (DPCs), unusually bulky DNA lesions that block replication and transcription and play a role in aging, cancer, cardiovascular disease, and neurodegenerative disorders. Repair of DPCs depends on the coordinated efforts of proteases and DNA repair enzymes to cleave the protein component of the lesion to smaller DNA-peptide crosslinks which can be processed by tyrosyl-DNA phosphodiesterases 1 and 2, nucleotide excision and homologous recombination repair pathways. DNA-dependent metalloprotease SPRTN plays a role in DPC repair, and SPRTN-deficient mice exhibit an accelerated aging phenotype and develop liver cancer early in life.
View Article and Find Full Text PDFTriticum mosaic virus: An overview of biology, functional genomics, gene expression vector, and management strategies.
Virology
December 2024
Department of Entomology, University of Nebraska-Lincoln, Lincoln, NE, 68583, USA.
Triticum mosaic virus (TriMV; Poacevirus tritici) is the founding member of the genus Poacevirus within the family Potyviridae. TriMV is one of the components of the wheat streak mosaic disease (WSMD) complex, an economically significant wheat disease in the Great Plains region of the USA. TriMV contains a single-stranded positive-sense RNA genome of 10,266 nts with an unusually long 5'-nontranslated region of 739 nts.
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