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Introduction: This survey investigates brain MRI practices for isolated GHD among Pediatric Endocrine Society (PES) members, focusing on gadolinium-based contrast agents (GBCAs) versus non-contrast MRI. Methods: A 15-question survey was distributed to 1,553 PES members, capturing data on GBCA usage, non-contrast imaging access, and awareness of gadolinium retention. Results: A total of 85% of respondents routinely order brain MRIs for isolated GHD, with 60% using GBCAs. Most respondents have access to high-resolution non-contrast imaging, though 54% are unaware of gadolinium retention risks. Conclusion: High-resolution non-contrast MRI demonstrates diagnostic efficacy, suggesting a shift away from GBCAs in clinic practice for isolated GHD. The survey forms the basis to update PES guidelines in the evaluation of isolated GHD. [ABSTRACT FROM AUTHOR]

Enzymes are nature's catalysts, mediating chemical processes in living systems. The study of enzyme function and mechanism includes defining the maximum catalytic rate and affinity for substrate/s (among other factors), referred to as enzyme kinetics. Enzyme kinetics is a staple of biochemistry curricula and other disciplines, from molecular and cellular biology to pharmacology. However, because enzyme kinetics involves concepts rarely employed in other areas of biology, it can be challenging for students and researchers. Traditional graphical analysis was replaced by computational analysis, requiring another skill not core to many life sciences curricula. Computational analysis can be time‐consuming and difficult in free software (e.g., R) or require costly software (e.g., GraphPad Prism). We present Enzyme Kinetics Analysis (EKA), a web‐tool to augment teaching and learning and streamline EKA. EKA is an interactive and free tool for analyzing enzyme kinetic data and improving student learning through simulation, built using R and RStudio's ShinyApps. EKA provides kinetic models (Michaelis–Menten, Hill, simple reversible inhibition models, ternary‐complex, and ping‐pong) for users to fit experimental data, providing graphical results and statistics. Additionally, EKA enables users to input parameters and create data and graphs, to visualize changes to parameters (e.g., KM or number of measurements). This function is designed for students learning kinetics but also for researchers to design experiments. EKA (enzyme-kinetics.shinyapps.io/enzkinet_webpage/) provides a simple, interactive interface for teachers, students, and researchers to explore enzyme kinetics. It gives researchers the ability to design experiments and analyze data without specific software requirements. [ABSTRACT FROM AUTHOR]

N6-methyladenosine (m6A) has been increasingly recognized as a new and important regulator of gene expression. To date, transcriptome-wide m6A detection primarily relies on well-established methods using next-generation sequencing (NGS) platform. However, direct RNA sequencing (DRS) using the Oxford Nanopore Technologies (ONT) platform has recently emerged as a promising alternative method to study m6A. While multiple computational tools are being developed to facilitate the direct detection of nucleotide modifications, little is known about the capabilities and limitations of these tools. Here, we systematically compare ten tools used for mapping m6A from ONT DRS data. We find that most tools present a trade-off between precision and recall, and integrating results from multiple tools greatly improve performance. Using a negative control could improve precision by subtracting certain intrinsic bias. We also observed variation in detection capabilities and quantitative information among motifs, and identified sequencing depth and m6A stoichiometry as potential factors affecting performance. Our study provides insight into the computational tools currently used for mapping m6A based on ONT DRS data and highlights the potential for further improving these tools, which may serve as the basis for future research. Direct RNA sequencing using nanopore platform can be used to detect N6-methyladenosine (m6A) modifications on mRNAs. Here the authors systematically compare tools used for m6A detection from nanopore direct sequencing. [ABSTRACT FROM AUTHOR]

N6-deoxyadenosine methylation (6mA) is the most widespread type of DNA modification in prokaryotes and is also abundantly distributed in some unicellular eukaryotes. However, 6mA levels are remarkably low in mammals. The lack of a precise and comprehensive mapping method has hindered more advanced investigations of 6mA. Here, we report a new method MM-seq (modification-induced mismatch sequencing) for genome-wide 6mA mapping based on a novel detection principle. We found that modified DNA bases are prone to form a local open region that allows capture by antibody, for example, via a DNA breathing or base-flipping mechanism. Specified endonuclease or exonuclease can recognize the antibody-stabilized mismatch-like structure and mark the exact modified sites for sequencing readout. Using this method, we examined the genomic positions of 6mA in bacteria (E. coli), green algae (C. reinhardtii), and mammalian cells (HEK239T, Huh7, and HeLa cells). In contrast to bacteria and green algae, human cells possess a very limited number of 6mA sites which are sporadically distributed across the genome of different cell types. After knocking out the RNA m6A methyltransferase METTL3 in mouse ES cells, 6mA becomes mostly diminished. Our results imply that rare 6mA in the mammalian genome is introduced by RNA m6A machinery via a non-targeted mechanism. [ABSTRACT FROM AUTHOR]

Central diabetes insipidus (DI) is a known complication following surgical resection of a suprasellar mass. There are limited data analyzing the outcomes of a standardized protocol for the management of postoperative DI in the pediatric population. We sought to fill this gap and hypothesized that utilizing a standardized protocol for fluid management (3-bag system) would reduce serum sodium fluctuations in the postoperative period after suprasellar surgery. A retrospective chart review was performed. Patients were identified with the following criteria: age ≤ 18 years, undergoing a surgical procedure for suprasellar mass that also had postoperative DI. The primary outcome was the variability in serum sodium during the first 48 h and between 48 and 120 h postoperatively. There were 21 encounters pre-protocol and 22 encounters post-protocol for neurosurgical procedures. Use of the standardized protocol was associated with a lower range of sodium within 48 h postoperatively (p=0.065) and 83% lower odds of hypernatremia (Na>150 mmol/L) within 48 h postoperatively (CI 0.039–0.714) after controlling for age, gender, and prior DI diagnosis. History of DI conferred a lower risk of hypernatremia as well as less sodium fluctuation within 48 h postoperatively. Younger patients, those <9.7 years of age were associated with increased risk of hyponatremia and greater sodium fluctuations during the postoperative period. In patients with postoperative DI after suprasellar surgery, using a standardized protocol for fluid management (3-bag system) appears to reduce serum sodium variability in the first 48 h after surgery. [ABSTRACT FROM AUTHOR]

Recent research on second‐generation long‐acting injectable antipsychotics (LAI SGAs) has proven its effectiveness in minimizing medication nonadherence problem and reducing relapses. Administered by medical professionals, making quick detection of nonadherence possible, long‐acting injectable antipsychotics (LAIs) facilitate immediate intervention and recovery process, and thus are favored by psychiatrists. Despite a higher initial cost with LAIs, the subsequent schizophrenia‐related health costs for hospitalizations and outpatients are greatly reduced. With reference to guidelines published by psychiatric associations around the globe, this article looks at scenarios in Hong Kong on the management of severe mentally ill patients with regard to the use of a host of psychosocial interventions as well as LAI SGAs as a preferable treatment. In particular, it examines the benefits of using LAI SGAs for Hong Kong patients who demonstrated high nonadherence treatment rates due to their social environment. It assesses the rationale behind the early usages of LAI SGAs, which help to provide better recovery outcomes for patients. [ABSTRACT FROM AUTHOR]

Food banks in contemporary Britain are feeding record numbers of people. Little is known about attendees' level of food insecurity, background diet quality or health. We surveyed 112 food bank attendees. Over 50% had experienced food shortage with hunger on a weekly basis of more often. Obesity and mental health problems were prevalent in women. Diet quality was poor with energy, protein, fibre, iron and calcium intakes inadequate, while saturated fat and sugars intakes were disproportionate. Women had poorer diet quality than men. Such patterns may lead to ill health. [ABSTRACT FROM AUTHOR]

Studies the control of cystic fibrosis transmembrane conductance regulator-associated (CFTR) ATP by a chloride sensor. Immunoprecipitation of CFTR and mutants from cRNA-injected Xenopus oocytes; Dissociation of chloride conductance and ATP efflux functions; Activation of CFTR-modulated ATP release.