Alkaloid Profile, Anticholinesterase and Antioxidant Activities, and Sexual Propagation in (Amaryllidaceae).

, a recently described endemic species from southern Peru, belongs to the Amaryllidaceae family and is known for its diversity of alkaloids. Amaryllidoideae have been studied for their diverse biological activities, particularly for their properties in treating neurodegenerative diseases. This work examines the alkaloidal profile using GC-MS and UPLC-MS/MS of alkaloid-enriched extracts obtained from the leaves and bulbs of and their inhibitory activity against acetylcholinesterase (AChE) and butyrylcholinesterase (BuChE) enzymes.

A lectin produced by a Streptomyces species targets mammalian pancreatic acinar cells in mice and humans.

Lectins are produced in almost all life forms, can interact with targets (glycans) in a cross-kingdom manner and have served as valuable tools for studying glycobiology. Previously, a bacterial lectin, named Streptomyces hemagglutinin (SHA), was found to agglutinate human type B erythrocytes. However, the binding of SHA to mammalian cell types other than human erythrocytes has not been explored.

Comparison of RT-qPCR With Branched DNA to Quantify a Lipid Nanoparticle-Encapsulated mRNA Therapeutic in Serum and Liver Tissue Samples From Nonclinical PK Studies.

While the branched DNA (bDNA) assay is an established bioanalytical method for measurement of lipid nanoparticle (LNP)-encapsulated messenger RNA (mRNA) pharmacokinetic parameters, reverse transcription-quantitative polymerase chain reaction (RT-qPCR) has been considered as an alternative platform. RT-qPCR and bDNA platforms were compared for sensitivity, specificity, correlation, and overall assay performance using serum and tissue samples from 2 nonclinical mouse studies of a therapeutic mRNA candidate, LNP-PAH-mRNA, which encodes for human phenylalanine hydroxylase enzyme. Pharmacokinetic parameter noncompartmental analysis was completed using Phoenix WinNonlin.

Drowned Kidney and Liver Donors Demonstrate No Difference in Mortality and Graft Failure Compared With the 4 Most Common Extrinsic Causes of Donor Deaths.

Objectives: The risks of mortality and graft failure in those receiving organ transplants from donors who have drowned are unclear. We compared 5-year mortality and graft survival from those receiving a drowned donor kidney or liver to those receiving organs from alternative causes of nondrowning donor death.

Materials And Methods: In this retrospective analysis, we searched the United Network for Organ Sharing database between January 1, 2010, and June 30, 2022.

Ongoing loss of viable neurons for weeks after mild perinatal hypoxia-ischemia.

Unlabelled: Mild hypoxic-ischemic encephalopathy is common in neonates with no evidence-based therapies, and 30-40% of patients experience adverse outcomes. The nature and progression of mild injury is poorly understood. Thus, we studied the evolution of mild perinatal brain injury using longitudinal two-photon imaging of transgenic fluorescent proteins as a novel readout of neuronal viability and activity at cellular resolution.