Meeting report - Alpine desmosome disease meeting 2024: advances and emerging topics in desmosomes and related diseases.

Desmosomes are adhesive cell contacts abundant in tissues exposed to mechanical strain, such as the stratified and simple epithelia of the epidermis and mucous membranes, as well as the myocardium. Besides their role in mechanical cell cohesion, desmosomes also modulate pathways important for tissue differentiation, wound healing and immune responses. Dysfunctional desmosomes, resulting from pathogenic variants in genes encoding desmosomal components, autoantibodies targeting desmosomal adhesion molecules or inflammation, cause the life-threatening diseases arrhythmogenic cardiomyopathy and pemphigus and contribute to the pathogenesis of inflammatory bowel diseases.

Dietary supplementation of blend of organic acids and monoglycerides alleviated diarrhea and systemic inflammation of weaned pigs experimentally infected with enterotoxigenic Escherichia coli F18.

Background: The emergence of antibiotic resistant microorganisms associated with conventional swine production practices has increased interest in acid-based compounds having antimicrobial properties and other biological functions as nutritional interventions. Despite the interest in organic acids and monoglycerides, few studies have examined the effects of the combination of these acid-based additives in weaned pigs under disease challenge conditions. Therefore, this study aimed to investigate the effects of dietary supplementation with blend of organic acids and/or medium-chain fatty acid monoglycerides on intestinal health and systemic immunity of weaned pigs experimentally infected with an enterotoxigenic Escherichia coli (ETEC) F18 at 4-week of age.

Long-term increases in wing length occur independently of changes in climate and climate-driven shifts in body size.

Recent widespread reductions in body size across species have been linked to increasing temperatures; simultaneous increases in wing length relative to body size have been broadly observed but remain unexplained. Size and shape may change independently of one another, or these morphological shifts may be linked, with body size mediating or directly driving the degree to which shape changes. Using hierarchical Bayesian models and a morphological time series of 27 366 specimens from five North American migratory passerine bird species, we tested the roles that climate and body size have played in shifting wing length allometry over four decades.

XopAE Effector from pv. Targets HSP20-Like p23 Cochaperone to Suppress Plant Basal Immunity.

Pathogenic bacteria use Type 3 effector proteins to manipulate host defenses and alter metabolism to favor their survival and spread. The non-model bacterial pathogen pv. () causes devastating disease in cassava.

Unleashing the innate ability of Escherichia coli to produce D-Allose.

D-allose is a rare monosaccharide, found naturally in low abundances. Due to its low-calorie profile and similar taste to sucrose, D-allose has the potential to become an ideal sugar substitute. D-allose also displays unique properties and health benefits that can be applied to various fields, including food and medicine.

Arsenic modifies the microbial community assembly of soil-root habitats in .

, renowned for its ability to hyperaccumulate arsenic, presents a promising solution to the escalating issue of global soil arsenic contamination. This fern cultivates a unique underground microbial community to enhance its environmental adaptability. However, our understanding of the assembly process and the long-term ecological impacts of this community remains limited, hindering the development of effective soil remediation strategies.

Characterization of the Titanium(III) Tris(alkyl) Ti{CH(SiMe)} and its Conversion to a Dimeric Alkyl-Bridged Titanium(IV) Species.

The reaction of three equivalents of LiCH(SiMe) with TiCl(NMe) afforded the rare homoleptic Ti(III) alkyl Ti{CH(SiMe)} (1) which crystallized as blue needles in 32 % yield. Single crystal X-Ray data for 1 showed a trigonal pyramidal coordination geometry around titanium, which could be ascribed to weak interactions between the C-H bonds and the Ti(III) atom based on computational results. X-band EPR spectroscopy gives spectral parameters consistent with the proposed Ti(III) formulation.

Advantages and disadvantages of current human enteric virus surrogates in soils and aquifers.

Groundwater is one of the main sources of drinking water, thus, human enteric viruses in groundwater could pose safety risks. Many enteric viruses enter drinking water sources through irrigation or recharge of contaminated water. It is therefore advised to test the potential transport risk with harmless surrogates before wastewater or recycled water is used for irrigation or groundwater recharge.

Southern California ozone exposure disparities under different emissions control strategies in a low-carbon future.

Environmental justice (EJ) has emerged as a critical consideration when planning new air pollution control strategies. In this study we analyze how traditional ozone (O) control strategies for the year 2050 will affect exposure disparities, defined as departures from the population average exposure, for O and oxides of nitrogen (NOx) in Southern California. Future air quality fields were simulated using a chemical transport model under five emission scenarios that explore a range of traditional controls that target the largest sources of precursor emissions using a novel O source apportionment technique but without considering exposure disparities.

Dynamical effects of Mechano-Chemo-Transduction on Cardiac Alternans.

In every heartbeat, cardiac muscle cells perform excitation-Ca signaling-contraction (EC) coupling to pump blood against the vascular resistance. Cardiomyocytes can sense the mechanical load and activate mechano-chemo-transduction (MCT) mechanism, which provides feedback regulation of EC coupling. MCT feedback is important for the heart to upregulate contraction in response to increased load to maintain cardiac output.

A scoping review of studies reporting biosecurity practices in small and backyard farms raising livestock or poultry in developed countries, 2000-2022.

Over the past two decades, there have been growing concerns around small and backyard farms in developed countries due to the potential risk they pose in introducing and spreading infectious disease agents. Ensuring high levels of biosecurity on these farms, through the maintenance of practices that prevent the introduction and transmission of disease agents, is essential in mitigating this risk. The aim of this study was to investigate, through a scoping review, the practices considered in articles reporting biosecurity in small and backyard farms raising livestock or poultry in developed countries, and how their implementation was examined.

Stimulating the regenerative capacity of the human retina with proneural transcription factors in 3D cultures.

Retinal diseases often lead to degeneration of specific retinal cell types with currently limited therapeutic options to replace the lost neurons. Previous studies have reported that overexpression of or combinations of proneural factors in Müller glia (MG) induce regeneration of functional neurons in the adult mouse retina. Recently, we applied the same strategy in dissociated cultures of fetal human MG and although we stimulated neurogenesis from MG, our effect in 2D cultures was modest and our analysis of newborn neurons was limited.

Air Pollution as an Environmental Risk Factor for Alzheimer's Disease and Related Dementias.

Alzheimer's disease and related dementias are a leading cause of morbidity in our aging populations. Although influenced by genetic factors, fewer than 5% of Alzheimer's disease and related dementia cases are due solely to genetic causes. There is growing scientific consensus that these dementias arise from complex gene by environment interactions.

Aging-dependent temporal regulation of MIR156 epigenetic silencing by CiLDL1 and CiNF-YB8 in chrysanthemum.

Temporal decline in microRNA miR156 expression is crucial for the transition to, and maintenance of, the adult phase and flowering competence in flowering plants. However, the molecular mechanisms underlying the temporal regulation of miR156 reduction remain largely unknown. Here, we investigated the epigenetic mechanism regulating the temporal silencing of cin-MIR156 in wild chrysanthemum (Chrysanthemum indicum), focusing on the role of the lysine-specific demethylase CiLDL1 and the nuclear factor Y complex.

Decoding the blueprint of receptor binding by filoviruses through large-scale binding assays and machine learning.

Evidence suggests that bats are important hosts of filoviruses, yet the specific species involved remain largely unidentified. Niemann-Pick C1 (NPC1) is an essential entry receptor, with amino acid variations influencing viral susceptibility and species-specific tropism. Herein, we conducted combinatorial binding studies with seven filovirus glycoproteins (GPs) and NPC1 orthologs from 81 bat species.

Advancing pancreatic cancer research and therapeutics: the transformative role of organoid technology.

Research on pancreatic cancer has transformed with the advent of organoid technology, providing a better platform that closely mimics cancer biology in vivo. This review highlights the critical advancements facilitated by pancreatic organoid models in understanding disease progression, evaluating therapeutic responses, and identifying biomarkers. These three-dimensional cultures enable the proper recapitulation of the cellular architecture and genetic makeup of the original tumors, providing insights into the complex molecular and cellular dynamics at various stages of pancreatic ductal adenocarcinoma (PDAC).

Draft genome sequence of Kei apple, an underutilized African tree crop.

To address food and nutrition security in the face of burgeoning global populations and erratic climatic conditions there is a need to include nutrient dense, climatic resilient but neglected indigenous fruit trees in agrifood systems. Here we present the draft genome sequence of Kei Apple, Dovyalis afra, a neglected indigenous African fruit tree with untapped potential to contribute to nutrient security and improved livelihoods. Our long-read-based genome assembly comprises 440 Mbp sequence across 1190 contigs with a N50 and L50 of 13.

The TRP Channels Serving as Chemical-to-Electrical Signal Converter.

Biology uses many signaling mechanisms. Among them, calcium and membrane potential are two prominent mediators for cellular signaling. TRPM4 and TRPM5, two calcium-activated monovalent cation-conducting ion channels, offer a direct linkage between these two signals.

Evaluating historical changes in a mussel bed community in northern California.

Marine foundation species are increasingly impacted by anthropogenic stressors, driving a loss of diversity within these critical habitats. Prior studies suggest that species diversity within mussel beds has declined precipitously in southern California, USA, but it is unclear whether a similar loss has occurred farther north. Here, we resurvey a mussel bed community in northern California first sampled in 1941 to evaluate changes in diversity after 78 years.

Chronic Cough and Hyperpnea: Clinical Approach to Equine Asthma.

Exercise intolerance, chronic cough, and hyperpnea are the clinical hallmarks of equine asthma. Diagnosis of severe equine asthma in horses is multistep; determination of the phenotype will help guide future recommendations. Management of equine asthma is largely reduction/elimination of triggering agents/conditions.

Nanopore RNA direct sequencing identifies that mA modification is essential for sorbitol-controlled resistance to Alternaria alternata in apple.

Sorbitol, a main photosynthate and transport carbohydrate in all tree fruit species in Rosaceae, acts as a signal controlling resistance against Alternaria (A.) alternata in apple by altering the expression of the MdNLR16 resistance gene via the MdWRKY79 transcription factor. However, it is not known if N-methyladenosine (mA) methylation of the mRNAs of these genes participates in the process.

Influence of an impacted estuary on the reproduction of an endangered endemic fish.

Health and nutrition of individuals are tied to reproductive success, which determines population viability. Environmental variability and anthropogenic effects can affect the health and nutrition of a species leading to reproductive repercussions which can hinder recovery of endangered populations. Indices of health and nutrition were examined for an imperiled species, delta smelt, Hypomesus transpacificus, in relation to their reproductive status to evaluate the effects of hydrologic conditions in the San Francisco Estuary and Sacramento-San Joaquin Delta.

Assessing drywell designs for managed aquifer recharge via canals and repurposed wells.

This study explores innovative drywell designs for managed aquifer recharge (MAR) in agricultural settings, focusing on smaller diameter and deeper drywells, including the repurposing of dried or abandoned wells. Numerical simulations assessed the impact of drywell diameter (5-120 cm), depth (15-55 m), screen height, and subsurface heterogeneity on infiltration (I) and recharge (R) volumes over a one-year period under constant head conditions. Results indicate that smaller diameter drywells can effectively infiltrate and recharge significant water volumes.