Impact of Storage on In Vitro Permeation and Mucoadhesion Setup Experiments Using Swine Nasal Mucosa.

Intranasal topical administration offers a promising route for local and systemic drug delivery, with in vitro permeation and mucoadhesion studies often using porcine models. However, the impact of storage on mucosal integrity after the procedure remains unaddressed. This study aimed to standardize the preparation process and evaluated whether storage of porcine nasal mucosa impairs its integrity and permeability for experimental comparisons.

Primary prevention in hospitals in 20 high-income countries in Europe - A case of not "Making Every Contact Count"?

This article provides a snapshot of primary prevention activities in hospitals in 20 European high-income countries, based on inputs from experts of the Observatory's Health Systems and Policies Monitor (HSPM) network using a structured questionnaire. We found that in the vast majority of countries (15), there are no systematic national policies on primary prevention in hospitals. Five countries (Cyprus, Finland, Ireland, Romania and the United Kingdom) reported systematic primary prevention activities in hospitals, although in one of them (Cyprus) this was due to the fact that small hospitals in rural areas or less populated districts host providers of primary care.

What Do Travelers Know about Traveler's Diarrhea? Impact of a Pre-Travel Consultation in the Lisbon Area, Portugal.

Traveler's diarrhea (TD) is one of the most common travel-related health problems, largely interfering with planned activities and potentially contributing to antimicrobial resistance. This study aimed to characterize the knowledge about TD among pre-travel consultation users of one Portuguese travel clinic and determine the impact of the consultation on knowledge levels. Using a quasi-experimental, separate-sample pretest-posttest design, participants were randomly assigned to two groups: control/pre-consultation group (CG) or experimental/post-consultation group (EG).

Generation of a virus-like particles based vaccine against IgE.

Background: Anti-IgE immunotherapy with monoclonal antibodies represents a breakthrough in treatment of severe allergic diseases. However, drawbacks such as short half-life and high price are not negligible. Our objective is to develop an anti-IgE vaccine based on virus-like particles (VLPs) which can induce long-lasting neutralizing IgG anti-IgE antibodies reducing allergic responses without causing intrinsic mast cell activation due to IgE cross-linking.

A comparison of social prescribing approaches across twelve high-income countries.

Background: Social prescribing connects patients with community resources to improve their health and well-being. It is gaining momentum globally due to its potential for addressing non-medical causes of illness while building on existing resources and enhancing overall health at a relatively low cost. The COVID-19 pandemic further underscored the need for policy interventions to address health-related social issues such as loneliness and isolation.

Nogo-A neutralization in the central nervous system with a blood-brain barrier-penetrating antibody.

The poor penetration of monoclonal antibodies (mAb) across the blood-brain barrier (BBB) impedes the development of regenerative therapies for neurological diseases. For example, Nogo-A is a myelin-associated protein highly expressed in the central nervous system (CNS) whose inhibitory effects on neuronal plasticity can be neutralized with direct administration of 11C7 mAb in CNS tissues/fluids, but not with peripheral administrations such as intravenous injections. Therefore, in the present study, we engineered a CNS-penetrating antibody against Nogo-A by combining 11C7 mAb and the single-chain variable fragment (scFv) of 8D3, a rat antibody binding transferrin receptor 1 (TfR) and mediating BBB transcytosis (11C7-scFv8D3).

Challenges facing mental health systems arising from the COVID-19 pandemic: Evidence from 14 European and North American countries.

We assessed challenges that the COVID-19 pandemic presented for mental health systems and the responses to these challenges in 14 countries in Europe and North America. Experts from each country filled out a structured questionnaire with closed- and open-ended questions between January and June 2021. We conducted thematic analysis to investigate the qualitative responses to open-ended questions, and we summarized the responses to closed-ended survey items on changes in telemental health policies and regulations.

Nonstructural protein VP2 of chicken anemia virus triggers IFN-β expression via host cGAS.

Chicken anemia virus (CAV) constitutes an important economic threat for the poultry industry. Advancing the understanding of the pathogenic process of CAV infection, we had previously demonstrated that CAV VP1 has the ability to inhibit expression of IFN-β via cGAS-STING signalling pathway. Here to go further to reveal this regulatory role of viral phosphatase VP2, we have performed protein-protein interaction assays with cGAS adaptors, as well as IFN-β induction screenings.

Lethal head ballistic trauma with a «nonlethal» projectile: A case report and review of the literature.

Forensic investigations of cranioencephalic ballistic trauma involve several aspects, including the study of terminal ballistics. This includes the analysis of projectiles and the damage they cause. Although some projectiles are considered "non-lethal", serious injuries and deaths secondary to the use of this type of ammunition have been reported.

Vaccination using mutated receptor binding domains of SARS-CoV-2: Evidence for partial immune escape but not serotype formation.

Introduction: SARS-CoV-2 has developed a number of Variants of Concern (VOC) with increased infectivity and/or reduced recognition by neutralizing antibodies specific for the receptor binding domain (RBD) of the spike protein. Extended studies of other viruses have shown that strong and broad viral escape from neutralizing serum antibodies is typically associated with the formation of serotypes.

Methods: To address the question of serotype formation for SARS-CoV-2 in detail, we generated recombinant RBDs of VOCs and displayed them on virus-like particles (VLPs) for vaccination and specific antibody responses.

On the role of allergen-specific IgG subclasses for blocking human basophil activation.

Successful treatment of IgE mediated allergies by allergen-specific immunotherapy (AIT) usually correlates with the induction of allergen-specific IgG4. However, it is not clear whether IgG4 prevents the allergic reaction more efficiently than other IgG subclasses. Here we aimed to compare allergen-specific monoclonal IgG1 and IgG4 antibodies in their capacity to inhibit type I allergic reactions by engaging FcγRIIb.

Structure of trimeric pre-fusion rabies virus glycoprotein in complex with two protective antibodies.

Rabies virus (RABV) causes lethal encephalitis and is responsible for approximately 60,000 deaths per year. As the sole virion-surface protein, the rabies virus glycoprotein (RABV-G) mediates host-cell entry. RABV-G's pre-fusion trimeric conformation displays epitopes bound by protective neutralizing antibodies that can be induced by vaccination or passively administered for post-exposure prophylaxis.

Increased Receptor Affinity and Reduced Recognition by Specific Antibodies Contribute to Immune Escape of SARS-CoV-2 Variant Omicron.

In this report, we mechanistically reveal how the Variant of Concern (VOC) SARS-CoV-2 Omicron (B.1.1.

A scalable and highly immunogenic virus-like particle-based vaccine against SARS-CoV-2.

Background: SARS-CoV-2 caused one of the most devastating pandemics in the recent history of mankind. Due to various countermeasures, including lock-downs, wearing masks, and increased hygiene, the virus has been controlled in some parts of the world. More recently, the availability of vaccines, based on RNA or adenoviruses, has greatly added to our ability to keep the virus at bay; again, however, in some parts of the world only.

In vitro data suggest that Indian delta variant B.1.617 of SARS-CoV-2 escapes neutralization by both receptor affinity and immune evasion.

Background: Emerged mutations can be attributed to increased transmissibility of the B.1.617 and B.

Molecular definition of severe acute respiratory syndrome coronavirus 2 receptor-binding domain mutations: Receptor affinity versus neutralization of receptor interaction.

Background: Several new variants of SARS-CoV-2 have emerged since fall 2020 which have multiple mutations in the receptor-binding domain (RBD) of the spike protein. It is unclear which mutations affect receptor affinity versus immune recognition.

Methods: We produced wild type RBD, RBD with single mutations (E484K, K417N, or N501Y) or with all three mutations combined and tested their binding to ACE2 by biolayer interferometry (BLI).

Organisation of the State, model of health system and COVID-19 health outcomes in six European countries, during the first months of the COVID-19 epidemic in 2020.

The time and type of the States' responses to the COVID-19 pandemic varied with the severity of the epidemiological situation, the perceived risk, the political organisation and the model of health system of the country. We discuss the response of Germany, Spain, France, Italy, Portugal and the United Kingdom during the first months of the COVID-19 epidemic in 2020, considering the political organisation of the country and its health system model. We analyse public health measures implemented to contain or mitigate the pandemic, as well as those related to governance, resources and reorganisation of services, financing mechanisms, response of the health system itself and health outcomes.

Sodium-glucose cotransporter-2 inhibitors for type 2 diabetes mellitus in adults: An overview of 46 systematic reviews.

Aims: To summarize the evidence from systematic reviews (SRs) of randomized controlled trials (RCTs) evaluating the efficacy and safety of sodium-glucose cotransporter-2 (SGLT2) inhibitors versus placebo or active comparators for type 2 diabetes mellitus.

Materials And Methods: We searched six databases between 2014 and 2021. We assessed the quality of evidence using Assessment of Multiple Systematic Reviews (AMSTAR 2) and Grading of Recommendations Assessment, Development and Evaluation (GRADE) and summarized the main outcome results according to their evidence of benefit (PROSPERO ID: CRD42019132431).

Recovery of Equine Oocytes in Ambulatory Practice and Potential Complications.

Field collection of oocytes in mares using transvaginal follicular aspiration (TVA) for embryo production has the potential to revolutionate the equine industry. Protocols for TVA in specialized laboratory settings have been described in the scientific literature since the early 1980s. The objective of this study was to determine the success rate of TVA oocytes recovery under ambulatory conditions.

The 2019 Health Basic Law in Portugal: Political arguments from the left and right.

The Portuguese National Health Service (NHS) was established in 1979. Since its inception, the relationship of the NHS with private-for-profit and private-non-profit organisations has been controversially discussed between left and right-wing political parties, and this has also led also to academic debate. In 1990, a Health Basic Law was approved by right-wing parties, which allowed public-private partnerships (PPPs) in the health system and led to an increased role of the private sector in health care provision.

A crossover clinical study to evaluate pain intensity from microneedle insertion in different parts of the oral cavity.

The objective of the present study was to evaluate discomfort and safety of microneedle (MN) insertion in several intraoral regions. A device was developed to standardize MN insertions. MNs were inserted in the following regions of the oral cavity: gingiva, palatine alveolar process, buccal mucosa, dorsum of the tongue and inner portion of the lower lip.

The 3Ds in virus-like particle based-vaccines: "Design, Delivery and Dynamics".

Vaccines need to be rationally designed in order be delivered to the immune system for maximizing induction of dynamic immune responses. Virus-like particles (VLPs) are ideal platforms for such 3D vaccines, as they allow the display of complex and native antigens in a highly repetitive form on their surface and can easily reach lymphoid organs in intact form for optimal activation of B and T cells. Adjusting size and zeta potential may allow investigators to further fine-tune delivery to lymphoid organs.