A Case Report of Grisel's Syndrome Complicating the Postoperative Course of Craniotomy for a Massive Cystic Brain Lesion.

This report presents the case of a seven-year-old child diagnosed with Grisel's syndrome following a craniotomy for a cystic brain lesion. The patient initially presented with persistent, progressively worsening headaches that coincided with neurological symptoms. Imaging revealed a massive cystic lesion causing a significant compression and midline shift.

Chemical engineering of CRISPR-Cas systems for therapeutic application.

Clustered regularly interspaced short palindromic repeats (CRISPR) technology has transformed molecular biology and the future of gene-targeted therapeutics. CRISPR systems comprise a CRISPR-associated (Cas) endonuclease and a guide RNA (gRNA) that can be programmed to guide sequence-specific binding, cleavage, or modification of complementary DNA or RNA. However, the application of CRISPR-based therapeutics is challenged by factors such as molecular size, prokaryotic or phage origins, and an essential gRNA cofactor requirement, which impact efficacy, delivery and safety.

Immunogenic recombinant Mayaro virus-like particles present natively assembled glycoprotein.

Virus-like particles (VLPs) are an established vaccine platform and can be strong immunogens capable of eliciting both humoral and cellular immune responses against a range of pathogens. Here, we show by cryo-electron microscopy that VLPs of Mayaro virus, which contain envelope glycoproteins E1-E2 and capsid, exhibit an architecture that closely resembles native virus. In contrast to monomeric and soluble envelope 2 (E2) glycoprotein, both VLPs as well as the adenovirus and modified vaccinia virus Ankara (MVA) vaccine platforms expressing the equivalent envelope glycoproteins E1-E2, and capsid induced highly neutralising antibodies after immunisation.

Pellino-1, a therapeutic target for control of SARS-CoV-2 infection and disease severity.

Enhanced expression of Pellino-1 (Peli1), a ubiquitin ligase is known to be associated with COVID-19 susceptibility. The underlying mechanisms are not known. Here, we report that mice deficient in Peli1 (Peli1) had reduced viral load and attenuated inflammatory immune responses and tissue damage in the lung following SARS-CoV-2 infection.

Amyloid-β oligomers increase the binding and internalization of tau oligomers in human synapses.

In Alzheimer's disease (AD), the propagation and spreading of CNS tau pathology closely correlates with cognitive decline, positioning tau as an attractive therapeutic target. Amyloid beta (Aβ) has been strongly implicated in driving tau spread, whereas primary tauopathies such as primary age-related tauopathy (PART)-which lack Aβ pathology-exhibit limited tau spread and minimal-to-no cognitive decline. Emerging evidence converges on a trans-synaptic mechanism of tau spread, facilitated by the transfer of misfolded tau aggregates (e.

Is the repeat worth it? Optimizing syndromic panel pathogen detection protocols.

Objective: The aim of the study was to compare the cost and clinical impact of repeating BioFire FilmArray gastrointestinal (GI) and respiratory (RP) panel assays with 3 vs 4 pathogen targets positive.

Method: We analyzed 12,027 GI and RP panels to evaluate our retesting policy, which retested panels with 3 or more detected pathogens (3-pathogen protocol) compared with the manufacturer's 4-pathogen (4-pathogen protocol) recommendation. We compared the retesting results, calculated the cost implications, and reviewed the clinical impact on antibiotic prescriptions and patient outcomes.

Heart Failure Beyond the Diagnosis: A Narrative Review of Patients' Perspectives on Daily Life and Challenges.

Heart failure (HF) is a complex syndrome that significantly affects patients' physical, psychological, and socioeconomic well-being. Despite advances in guideline-directed medical therapy (GDMT), such as ACE inhibitors, beta-blockers, and SGLT2 inhibitors, HF continues to have a high global burden, with over 64 million affected worldwide and a five-year mortality rate of 50%. HF disrupts various life aspects, especially for younger patients (aged 35-55), who often face career interruptions due to severe symptoms like fatigue and frequent hospitalizations.

Influence of occupational stress on breast cancer incidence in the Women's Health Initiative.

Objective: Psychological stress has long been posited as a potential risk factor for breast cancer. We aimed to examine the relationship between occupational stress and the incidence of invasive breast cancer among postmenopausal women from the Women's Health Initiative Observational Study.

Method: Occupational stress was characterized through linkage of Standard Occupational Classification codes for participants' jobs to the Occupational Information Network.

disrupts and reduces endothelial tight junction protein zonula occludens-1 in association with inflammasome activation.

spp. cause life-threatening diseases in humans. The fundamental pathophysiological changes in fatal rickettsial diseases are disrupted endothelial barrier and increased microvascular permeability.

National Preceptor Competency Consensus Study.

Objective: The aim of this study was to develop a consensus model of required preceptor competencies to inform preceptor selection, development, support, and assessment.

Background: The preceptor role is complex and multifaceted, requiring knowledge and skills beyond the typical RN role; however, no nationally developed standards for preceptor competencies exist.

Methods: A mixed-method approach (national survey of preceptors, electronic Delphi, expert panel) was used to develop consensus on required preceptor competencies.

Who to Boost When: The Effect of Age and Dosing Interval on Delta and Omicron COVID-19 Incidence in the Open-label Phase of the COVE Trial.

Background: To help inform COVID-19 vaccination recommendations, we evaluated the impact of age and dosing interval on clinical benefit of a third dose of mRNA-1273.

Methods: Approximately 17 000 participants from the phase 3 Coronavirus Efficacy trial who previously received 2 doses of 100 µg mRNA-1273 were evaluated for COVID-19 between September 2021 and April 2022 during uptake of a third booster dose of 50 µg of mRNA-1273. Cox models assessed booster relative efficacy of a third dose.

Entomological surveillance during a major CHIKV outbreak in northwestern São Paulo: insights from São José do Rio Preto.

Background: Brazil is considered an epicenter for emerging and re-emerging arboviruses that significantly impact public health. The mid-sized city of São José do Rio Preto (SJdRP) in northwestern São Paulo state is considered hyperendemic for arboviral diseases, with case numbers climbing each year. Only 45 cases of chikungunya (CHIKV) were reported in the city from 2015 to 2022, indicating cryptic circulation of this virus, but cases in the state increased notably in 2023.

How to be a Better Surgeon: The Evidence for Surgical Coaching.

Surgical coaching has made a positive contribution to surgical training and practice; however, the otolaryngology-head and neck surgery literature is lacking. The operating environment for practicing surgeons, and specifically otolaryngologists, is continually changing due to advancements in technology and new practice patterns. These changes in practice, however, have not come with a coordinating system for operative feedback once surgical training is completed.

Antiviral and immunomodulatory effects of ouabain against congenital Zika syndrome model.

Zika virus (ZIKV) is an arbovirus associated with neurological disorders accompanying congenital infections. With no vaccine or antiviral approved, there is an urgent need for the development of effective antiviral agents against ZIKV infection. We evaluated the anti-ZIKV and immunomodulatory activity of ouabain, a Na/K-ATPase inhibitor known to have immunomodulatory and antiviral activities, using human neural stem and progenitor cells (hNS/PCs) and a murine model of congenital Zika syndrome (CZS).

Consensus Guideline for Care of Patients in the Prehospital and Aerospace Settings with Exposures to Hydrazine and Hydrazine Derivatives.

Objectives: Hydrazine (HZ) and Hydrazine Derivative (HZ-D) exposures pose health risks to people in industrial and aerospace settings. Several recent systematic reviews and case series have highlighted common clinical presentations and management strategies. Given the low frequency at which HZ and HZ-D exposures occur, a strong evidence base on which to develop an evidence-based guideline does not exist at this time.

Detection of neutralizing antibodies against arboviruses from liver homogenates.

Yellow fever virus (YFV) circulates in a sylvatic cycle between non-human primates (NHPs) and arboreal mosquitoes in Brazil. Passive monitoring of ill or deceased NHPs is a key component of the Brazilian yellow fever (YF) surveillance program. Samples from NHPs carcasses are usually suitable for molecular tests but not for serological assays.

Efficient Expression of Oropouche Virus Nonstructural Proteins NSs and NSm.

Oropouche fever, a mosquito- or midge-borne emerging zoonotic disease endemic to South and Central America, manifests as a dengue-like acute febrile illness with occasional occurrences of meningitis or meningoencephalitis. The causative agent, Oropouche virus (OROV), belongs to the genus Orthobunyavirus within the family Peribunyaviridae. Its tripartite negative-sense RNA genome comprises small (S), medium (M), and large (L) segments, encoding structural N, Gn/Gc, and L proteins, respectively.

Cryogenic Electron Microscopy of Rift Valley Fever Virus.

Rift Valley fever virus (RVFV) is an important livestock and human pathogen. It is also a potential bioweapon owing to its ability to spread by aerosols. It is an enveloped virus containing surface protrusions composed of two viral glycoproteins, G and G; the viral core contains ribonucleoprotein complexes.

The BumS sensor phosphatase detects the branched short-chain fatty acids isobutyrate and isovalerate as direct cues for signal transduction.

Two-component signal transduction systems (TCSs) are nearly ubiquitous across bacterial species and enable bacteria to sense and respond to specific cues for environmental adaptation. The BumSR TCS is unusual in that the BumS sensor exclusively functions as a phosphatase rather than a kinase to control phosphorylated levels of its cognate BumR response regulator (P-BumR). We previously found that BumSR directs a response to the short-chain fatty acid butyrate generated by resident microbiota so that identifies ideal lower intestinal niches in avian and human hosts for colonization.

A New Clinical Test to Evaluate Intrinsic Foot Muscle Function.

Background: Intrinsic foot muscle weakness has been implicated in a wide range of forefoot conditions and is typically measured by the paper grip test. The proposed "knuckle test" is intended to evaluate intrinsic foot muscle function, in which active flexion of toes makes the metatarsal heads ("knuckles") prominent in the forefoot. This study seeks to compare prevalence of negative knuckle test results and intrinsic muscle weakness in patients, primarily by association with a positive paper grip test result and secondarily with presence of toe deformities.

Design, Synthesis and Biological Evaluation of 2-Phenyl Indole Analogues of OXi8006 as Colchicine Site Inhibitors of Tubulin Polymerization and Vascular Disrupting Agents.

Inhibitors of tubulin polymerization represent a promising therapeutic approach for the treatment of solid tumors. Molecules that bind to the colchicine site are of interest as they can function with a dual mechanism of action as both potent antiproliferative agents and tumor-selective vascular disrupting agents (VDAs). One such example is a 2-aryl-3-aroyl-indole molecule (OXi8006) from our laboratory that demonstrates potent inhibition of tubulin polymerization and strong antiproliferative activity (cytotoxicity) against a variety of human cancer cell lines.