Nothnagel Syndrome Without Extremity Symptoms: A Case Report.

The finding of pupil-sparing third nerve palsy is synonymous with diabetic third nerve palsy in the minds of many clinicians. While this is the most common cause of a third nerve palsy with normal pupillary response, it is not the only cause. We present the case of an elderly diabetic gentleman who presented with pupil-sparing third nerve palsy and gait abnormalities without any weakness or incoordination in the extremities.

An analysis of the structural changes of the oxygen evolving complex of Photosystem II in the S and S states revealed by serial femtosecond crystallography.

Photosystem II (PSII) is a unique natural catalyst that converts solar energy into chemical energy using earth abundant elements in water at physiological pH. Understanding the reaction mechanism will aid the design of biomimetic artificial catalysts for efficient solar energy conversion. The MnOCa cluster cycles through five increasingly oxidized intermediates before oxidizing two water molecules into O and releasing protons to the lumen and electrons to drive PSII reactions.

Exploring CRISPR-Cas9 HNH-Domain-Catalyzed DNA Cleavage Using Accelerated Quantum Mechanical Molecular Mechanical Free Energy Simulation.

The target DNA (tDNA) cleavage catalyzed by the CRISPR Cas9 enzyme is a critical step in the Cas9-based genome editing technologies. Previously, the tDNA cleavage from an active SpyCas9 enzyme conformation was modeled by Palermo and co-workers (Nierzwicki et al., , 912) using ab initio quantum mechanical molecular mechanical (ai-QM/MM) free energy simulations, where the free energy barrier was found to be more favorable than that from a pseudoactive enzyme conformation.

Hurley Staging Training for Hidradenitis Suppurativa Patients.

Introduction: The Hurley staging system is a grading system utilized to measure hidradenitis suppurativa (HS) severity. Teaching patients to grade the severity of HS may aid in the accuracy of self-reporting for research and clinical purposes. Thus, this study aimed to determine the utility of a Hurley stage learning module (HSLM) for participants to grade images of HS.

Per- and polyfluoroalkyl substances (PFAS) accumulation in fish occupying different trophic positions from East Canyon Creek, a seasonally effluent-dominated river, Utah, USA.

Fish and seafood are considered a major source of human dietary exposure to per- and polyfluoroalkyl substances (PFAS). In this study, we examined levels of 35 PFAS in fish samples of brown trout and mottled sculpin, which occupy different trophic positions, collected in 2014 from East Canyon Creek in Utah, USA. We observed 20 PFAS with ∑PFAS ranging from 0.