Comprehensive Screening of per- and Polyfluoroalkyl Substances (PFAS) in Food Contact Materials: Utilizing Combustion Ion Chromatography for Total Organic Fluorine (TOF) Analysis.

Background: Per- and polyfluoroalkyl substances (PFAS) comprise thousands of fluorinated chemicals. They are of growing concern because many PFAS compounds are persistent and toxic. Food contact materials (FCM) containing PFAS pose multiple exposure pathways to humans, prompting twelve states to enact laws banning FCM with PFAS levels exceeding 100 ppm of TOF.

Validated LC-MS/MS methodology for the quantification of CBD, trace level THCA and UK controlled cannabinoids (Δ-THC, Δ-THC, CBN and THCV) in food samples.

Products containing cannabidiol (CBD) have become increasingly popular due to consumer-perceived benefits of improving health and well-being. More specifically in the United Kingdom (UK), CBD food products are categorised as . For these products to remain on the market, they must have authorisation from the Food Standards Agency on the basis that they are safe, correctly labelled, and do not contain substances classified under controlled drugs legislation in accordance with any existing or future Home Office guidance.

An Educational Intervention to Promote Central Nervous System-Active Deprescribing in Dementia: A Pilot Study.

Background: Central nervous system (CNS)-active polypharmacy (defined as concurrent exposure to three or more antidepressant, antipsychotic, antiseizure, benzodiazepine, opioid, or nonbenzodiazepine benzodiazepine receptor agonists) is associated with significant potential harms in persons living with dementia (PLWD).We conducted a pilot trial to assess a patient nudge intervention's implementation feasibility and preliminary effectiveness to prompt deprescribing conversations between PLWD experiencing CNS-active polypharmacy and their primary care clinicians ("clinicians").

Methods: We used the electronic health record to identify PLWD prescribed CNS-active polypharmacy in primary care clinics from two health systems.

General structure-activity relationship models for the inhibitors of Adenosine receptors: A machine learning approach.

Adenosine receptors (A, A, A, A) play critical roles in cellular signaling and are implicated in various physiological and pathological processes, including inflammations and cancer. The main aim of this research was to investigate structure-activity relationships (SAR) to derive models that describe the selectivity and activity of inhibitors targeting Adenosine receptors. Structural information for 16,312 inhibitors was collected from BindingDB and analyzed using machine learning methods.

Irritability as a Transdiagnostic Construct Across Childhood and Adolescence: A Systematic Review and Meta-analysis.

This meta-analytic review examined irritability across childhood and adolescence as it relates to symptoms of common mental health disorders in these periods. Of key interest was whether the relationship between irritability and symptom severity varies according to symptom domain. This was tested at the level of broad symptom dimensions (internalizing versus externalizing problems) as well as discrete diagnostic domains (e.

Optimized breath analysis: customized analytical methods and enhanced workflow for broader detection of VOCs.

Introduction: Breath Volatile organic compounds (VOCs) are promising biomarkers for clinical purposes due to their unique properties. Translation of VOC biomarkers into the clinic depends on identification and validation: a challenge requiring collaboration, well-established protocols, and cross-comparison of data. Previously, we developed a breath collection and analysis method, resulting in 148 breath-borne VOCs identified.

Metal-organic frameworks encapsulating gold nanoclusters and carbon dots for ratiometric fluorescent detection of formaldehyde in real food samples, construction materials and indoor environments.

A novel fluorescence sensing nanoplatform (CDs/AuNCs@ZIF-8) encapsulating carbon dots (CDs) and gold nanoclusters (AuNCs) within a zeolitic imidazolate framework-8 (ZIF-8) was developed for ratiometric detection of formaldehyde (FA) in the medium of hydroxylamine hydrochloride (NHOH·HCl). The nanoplatform exhibited pink fluorescence due to the aggregation-induced emission (AIE) effect of AuNCs and the internal filtration effect (IFE) between AuNCs and CDs. Upon reaction between NHOH·HCl and FA, a Schiff base formed via aldehyde-diamine condensation, releasing hydrochloric acid.

Aptamer-based fluorescence biosensor for rapid detection of chloramphenicol based on pyrene excimer switch.

Chloramphenicol (CAP) is widely used in treating bacteria infection in animals and humans. However, the accumulation of CAP in food and environment caused serious health risk to human. Consequently, sensitive and selective detection of CAP is of great importance in environmental monitoring and food safety.

Evaluation of combined workflows for multimodal mass spectrometry imaging of elements and lipids from the same tissue section.

The wide range of mass spectrometry imaging (MSI) technologies enables the spatial distributions of many analyte classes to be investigated. However, as each approach is best suited to certain analytes, combinations of different MSI techniques are increasingly being explored to obtain more chemical information from a sample. In many cases, performing a sequential analysis of the same tissue section is ideal to enable a direct correlation of multimodal data.

Comparison between ZenoTOF 7600 system and QTOF for plant metabolome: an example of metabolomics applied to coffee leaves.

Introduction: ZenoTOF is new class of high-resolution mass spectrometer that combines resolution and sensitivity. This mass spectrometer is well designed to perform metabolomics.

Methods: In this context, we compared the performance of ZenoTOF 7600 system (Sciex) with QTOF6520 (Agilent Technologies) through the leaf metabolome analysis of two Coffea species, namely C.

Designing Fluorescent Interfaces at Hotspots in a Plasmonic Nanopore for Homologous Optoelectronic Sensing.

In this work, a site-selective functionalization strategy is proposed for modifying fluorescent dyes in the plasmonic nanopore, which highlights building optoelectronic dual-signal sensing interfaces at "hotspots" locations to construct multiparameter detection nanosensor. Finite-difference time-domain (FDTD) simulations confirmed the high-intensity electromagnetic field due to plasmonic nanostructure. It is demonstrated that adjusting the distance between the nanopore inner wall and fluorophore prevented the fluorescence quenching, resulting in more than a thirty fold fluorescence enhancement.

Stable H-O and radiogenic Sr isotopic ratios in bottled water in South Korea.

Stable H-O and radiogenic Sr isotopic compositions of bottled water in South Korea were investigated to trace water origins and to elucidate hydrogeochemical water-rock interactions within aquifers. Eighty-one bottled water samples were collected across the country. The δD and δO values, and Sr/Sr ratios and Sr contents of groundwater-sourced bottled water samples were in the ranges of -68 to -40 ‰, -10 to -7 ‰, 0.

Long-Term Immunity and Anamnestic Response Following Hepatitis B Vaccination: A Systematic Review and Meta-Analysis.

Using a systematic review and meta-analytic approach, this study determined the durability of HBV immunity and the prevalence of anamnestic response to a booster HBV vaccine dose in individuals previously vaccinated with a 3-dose HBV vaccine series as children or adolescents. Two researchers independently searched PubMed, Embase and Cochrane from inception to 6/1/2023 and performed data extraction. Studies that included individuals with significant comorbidities or < 5 years of follow-up were excluded.

Development and validation of a robust single extraction method for analysis of PAHs, HBCD, BDE, and PCBs in the coastal environment.

Monitoring persistent organic pollutants (POPs) with endocrine-disrupting properties poses significant analytical challenges due to labor-intensive, costly, and environmentally unsustainable procedures. This study developed an efficient and robust approach for the simultaneous detection of diverse groups of semi-volatile organics in water and sediment samples using gas chromatography-tandem mass spectrometry (GC-MS). Two extraction methods were studied for determining POPs in water and sediments.

Carborane-decorated siloles with highly efficient solid-state emissions - what drives the photophysical properties?

New hybrids were synthesised by linking carboranes and siloles, both of which are known as aggregation-induced emission active units. Although most of the newly synthesised systems do not display notable quantum yield either in solution or in the aggregated state, they emit strongly in the solid-state, and a quantum yield of up to 100% can be achieved. The tailorable quantum yield can be attributed to the packing of the molecules in the crystal lattice ruled by the carborane and phenyl moieties according to the SC-XRD data.

Thermal Analysis of Electromagnetic Induction Heating for Cylinder-Shaped Objects.

Induction heating is one of the cleanest and most efficient methods for heating materials, utilizing electromagnetic fields induced through AC electric current. This article reports an analytical solution for transient heat transfer in a three-dimensional (3D) cylindrical object under induction heating. A simplified form of Maxwell's equations is solved to determine the heat generation inside the cylinder by calculating the current density distribution within the body.

Advances and Applications of Capillary Electrophoresis Mass Spectrometry in Food Analysis: Strategies for Online and Offline Preconcentration.

Advancements in food technology have increased the need for thorough analysis to ensure food safety, quality, and compliance with regulatory requirements. Capillary electrophoresis-mass spectrometry (CE-MS) has emerged as a powerful tool in food analysis due to its high separation efficiency, low sample consumption, and ability to handle complex matrices. However, challenges such as the use of volatile running buffers and maintaining the stability of the electrical circuit connecting the CE and MS systems have been addressed through advancements in interface designs, such as sheathless systems and optimized sheath-liquid compositions.

Enabling icIEF Peak Identification of AAV Capsid Proteins by Fractionation on MauriceFlex and Subsequent Analysis by LC-MS.

A significant limitation of imaged capillary electric focusing (icIEF) is the inability to identify and characterize specific species in the electropherogram. This has led to the development of complementary ion-exchange chromatography (IEX)-based methods that are amenable to either fraction collection and subsequent characterization or online IEX coupled to mass spectrometry. To overcome this limitation while maintaining the use of icIEF, novel approaches, including an icIEF separation and fractionation technology (MauriceFlex, ProteinSimple), have been developed.

Determination of reference intervals of venous blood gas and acid-base parameters in clinically healthy awake cats.

Background: Venous blood gas and acid-base analysis is often performed in cats and requires appropriate reference intervals (RIs) for interpretation. The currently available RIs were created from small numbers of cats, while current guidelines suggest that a minimum number of 40 samples is required for the creation of an accurate/appropriate RI.

Key Findings: In 41 healthy awake cats, pH, PCO, PO, sodium, potassium, ionized calcium, chloride, glucose, and plasma lactate concentrations were measured, while bicarbonate, standardized base excess, and anion gap were calculated.

Facilitators and barriers of alcohol goals for Latinx men hospitalized with alcohol use disorder seen by an Addiction Consult Team.

Introduction: Latinx individuals are disproportionately affected by alcohol use disorder (AUD). Understanding Latinx individuals' barriers and facilitators to reach AUD-related goals can help implement culturally and linguistically concordant interventions to improve alcohol-related outcomes.

Methods: We conducted semi-structured qualitative interviews with Latinx, Spanish-speaking men with AUD within 20 weeks of hospital discharge who were seen by an addiction consult team during hospitalization in an urban, safety-net hospital in San Francisco.

[Clinical and epidemiological indicators of stroke during the COVID-19 pandemic and in the post-COVID period in the Moscow region].

Objective: To analyze the dynamics of clinical and epidemiological indicators of stroke and the features of providing specialized care to patients in the Moscow region in the period 2019-2023.

Material And Methods: Mortality rates, the average annual population, and the number of deaths in one-year age groups were analyzed based on the «Brief Nomenclature of Causes of Death» by ROSSTAT and the database of the Registry Office of the Moscow Region. Depersonalized data on deceased individuals aged 18 years and older were obtained from this database, including codes and names of diseases or conditions specified in Parts I and II of the medical death certificate, age, sex, and place of death for the period 2019-2023.

'Splice-at-will' Cas12a crRNA engineering enabled direct quantification of ultrashort RNAs.

We present a robust 'splice-at-will' CRISPR RNA (crRNA) engineering mechanism that overcomes the limitations of clustered regularly interspaced short palindromic repeats (CRISPR)/Cas system in directly detecting ultrashort RNAs. In this strategy, an intact Cas12a crRNA can be split from almost any site of the spacer region to obtain a truncated crRNA (tcrRNA) that cannot activate Cas12a even after binding an auxiliary DNA activator. While splicing tcrRNAs with a moiety of ultrashort RNA, the formed combination can work together to activate Cas12a efficiently, enabling 'splice-at-will' crRNA engineering.

Lung resection and new postoperative home oxygen requirement: a systematic review.

Background: While patients are assessed for their ability to tolerate surgery through physiologic evaluations such as pulmonary function tests, ventilation-perfusion scans, and exercising testing, some patients still require home oxygen therapy after pulmonary resection. It is not well understood what the associated risk factors are, how long patients need supplemental oxygen, and if this requirement is associated with worse long-term outcomes. Given these knowledge gaps, we sought to conduct a systematic review of pulmonary resections and new postoperative home oxygen requirement.