Using VR to Enhance Anatomy Education for Medical Imaging Learners

Presented as a Themed Oral Presentation at 2020 IUSM Education Day.The Ruth Lilly Medical Library’s Nexus Collaborative Learning Lab (Nexus) and the Medical Imaging Technology (MIT) Program at IUSM have partnered to create a series of Virtual Reality (VR) modules to enhance student comprehension and retention of anatomy for Cardiac Interventional (CI), Computed Tomography (CT), Vascular Interventional (VI), and Magnetic Resonance Imaging (MRI). This presentation will introduce you to VR and its applications in medical education, and describe the VR service available through the Nexus. Learn how a VR app for anatomy education, 3D Organon VR, was used to create greater student-content interactivity and to add flexibility to instruction

Anaesthesia for left thoracoscopic sympathectomy for refractory long QT syndrome: three case reports

Congenital long QT syndrome (LQTS) is a rare genetic disorder that has been associated with various genetic mutations including life-threatening cardiac arrhythmias and sudden death. Left thoracoscopic sympathectomy is an effective treatment for patients who are refractory to medical therapy or who need frequent epicardial internal cardio defibrillator intervention. The authors report three cases, one adult and two children, who underwent successful left thoracoscopic sympathectomy. All three patients remained clinically stable without arrhythmias through 3 months of follow-up. It is suggested in the literature that 77% of patients experienced immediate relief of symptoms. The results of this case report suggest that left thoracoscopic sympathectomy is a safe and effective approach for treating patients with LQTS.Keywords: congenital condition, left cardiac sympathetic denervation, left thoracic sympathectomy, prolonged QT syndrome, video-assisted thoracoscopic surger

Crystallization of a scRIP-gelonin isolated from plant seeds Gelonium multiforum

Single crystals of the protein gelonin isolated from the seeds of Gelonium multiforum have been grown at room temperature by vapor diffusion method. The crystals are monclinic with a = 49.4 Å, b = 44.9 Å, c = 137.4 Å, and β = 98.3°. The space group is P21, with two molecules in the asymmetric unit which are related by a noncrystallographic 2-fold axis along ψ =13° and φ =88°. The crystals diffract X-rays to high resolution, making it possible to obtain an accurate structure of this single chain ribosome inactivating protein

Non-cell autonomous OTX2 transcription factor regulates anxiety-related behaviors in the mouse

The Otx2 homeoprotein transcription factor is expressed in the dopaminergic neurons of the ventral tegmental area, a mesencephalic nucleus involved in the control of complex behaviors through its projections to limbic structures, including the ventral hippocampus, amygdala, nucleus accumbens and prefrontal cortex. We find adult mice heterozygous for Otx2 show a hypoanxious phenotype in light-dark box and elevated plus maze paradigms. However, the number of dopaminergic neurons, the integrity of their axons, their projection patterns in target structures, and the amounts of dopamine and dopamine metabolites in targets structures were not modified in the Otx2 mutant. Because OTX2 is expressed by the choroid plexus, secreted into cerebrospinal fluid and transferred to parvalbumin interneurons of the cortex, hippocampus, and amygdala, we investigated if the hypoanxiety of Otx2 heterozygous mice could result from the decreased synthesis of Otx2 in the choroid plexus. Indeed, hypoanxious phenotype was reversed by the overexpression of Otx2 specifically in choroid plexus of adult Otx2 heterozygous mice, while hypoanxious phenotype could be induced in adult wild type mice by lowering OTX2 levels in the cerebrospinal fluid. Taken together, OTX2 synthesis by the choroid plexus followed by its secretion into the cerebrospinal fluid is an important regulator of the anxiety phenotype in the mouse. All rights reserved. No reuse allowed without permission

X-ray structure of gelonin and gelonin-AMP complex

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Letter to NLM about MeSH

A letter written to the National Library of Medicine addressing concerns regarding the problematic medical subject heading, Blacks , other problematic terms, and the process by which they are selected. The letter concludes with recommendations for improvement by the authors and endorsed by several hundred signatories. In total, the letter was signed by 726 library workers from around the world and sent by email to National Library of Medicine representatives on Friday, June 10th, 2022. In addition, it was also shared with the Medical Library Association which distributed it through their website under the op-ed, Open Letter to NLM Regarding MeSH Term Changes and later as an MLAConnect post titled, NLM Responds to Librarians’ Open Letter re: MeSH Term Changes

The Recognition of N-Glycans by the Lectin ArtinM Mediates Cell Death of a Human Myeloid Leukemia Cell Line

ArtinM, a d-mannose-binding lectin from Artocarpus heterophyllus (jackfruit), interacts with N-glycosylated receptors on the surface of several cells of hematopoietic origin, triggering cell migration, degranulation, and cytokine release. Because malignant transformation is often associated with altered expression of cell surface glycans, we evaluated the interaction of ArtinM with human myelocytic leukemia cells and investigated cellular responses to lectin binding. The intensity of ArtinM binding varied across 3 leukemia cell lines: NB4>K562>U937. The binding, which was directly related to cell growth suppression, was inhibited in the presence of Manα1-3(Manα1-6)Manβ1, and was reverted in underglycosylated NB4 cells. ArtinM interaction with NB4 cells induced cell death (IC50 = 10 µg/mL), as indicated by cell surface exposure of phosphatidylserine and disruption of mitochondrial membrane potential unassociated with caspase activation or DNA fragmentation. Moreover, ArtinM treatment of NB4 cells strongly induced reactive oxygen species generation and autophagy, as indicated by the detection of acidic vesicular organelles in the treated cells. NB4 cell death was attributed to ArtinM recognition of the trimannosyl core of N-glycans containing a ß1,6-GlcNAc branch linked to α1,6-mannose. This modification correlated with higher levels of N-acetylglucosaminyltransferase V transcripts in NB4 cells than in K562 or U937 cells. Our results provide new insights into the potential of N-glycans containing a β1,6-GlcNAc branch linked to α1,6-mannose as a novel target for anti-leukemia treatment