The Effect of Milk-Derived Extracellular Vesicles on Intestinal Epithelial Cell Proliferation.

Inflammatory bowel disease (IBD) is a chronic, relapsing inflammation disorder of the gastrointestinal tract characterized by disrupted intestinal epithelial barrier function. Despite advances in treatment, including biological agents, achieving sustained remission remains challenging for many patients with IBD. This highlights the urgent need for novel therapeutic strategies.

Role of a Chest X-ray Severity Score in a Multivariable Predictive Model for Mortality in Patients with COVID-19: A Single-Center, Retrospective Study.

Predicting the mortality risk of patients with Coronavirus Disease 2019 (COVID-19) can be valuable in allocating limited medical resources in the setting of outbreaks. This study assessed the role of a chest X-ray (CXR) scoring system in a multivariable model in predicting the mortality of COVID-19 patients by performing a single-center, retrospective, observational study including consecutive patients admitted with a confirmed diagnosis of COVID-19 and an initial CXR. The CXR severity score was calculated by three radiologists with 12 to 15 years of experience in thoracic imaging, based on the extent of lung involvement and density of lung opacities.

Contiguous Osteomyelitis of Distal Extremities in Children.

. To evaluate the burden of Contiguous Osteomyelitis (COM) in pediatric patients with cellulitis/abscess of hands/feet. .

Penile ossification of the entire penile shaft found incidentally on pelvic x-ray.

Penile ossification, a rare condition, has been linked traditionally to Peyronie's disease (PD) despite the presence of other less common etiologies. The ossification takes place usually in the mid-shaft of the penis with few cases reporting involvement of the entire shaft. Ultrasound has been the method of choice to demonstrate plaque calcifications.

Decay of the Stress-Induced Ligand MICA Is Controlled by the Expression of an Alternative 3' Untranslated Region.

Recognition of the human stress-induced ligand MHC class I polypeptide-related sequence A (MICA) by the receptor NKG2D expressed on NK cells leads to NK cell-mediated killing of the target cells. Hence, the expression of MICA must be tightly regulated, and its cell surface expression needs to be quickly downregulated to avoid inappropriate activation of immune cells. In this article, we describe a transcript variant of human MICA that has not yet been studied, which contains a 3' untranslated region of 119 nt instead of 174.

Fever and Hip Pain: Not Always Due to a Septic Hip.

Hip pain in febrile children always raises concern for septic arthritis. Pyomyositis is a rare cause of hip pain. Because it involves muscles around the joint, it may have a similar presentation as a septic hip.

Odd-even effect in molecular electronic transport via an aromatic ring.

A distinct odd-even effect on the electrical properties, induced by monolayers of alkyl-phenyl molecules directly bound to Si(111), is reported. Monomers of H2C═CH-(CH2)n-phenyl, with n = 2-5, were adsorbed onto Si-H and formed high-quality monolayers with a binding density of 50-60% Si(111) surface atoms. Molecular dynamics simulations suggest that the binding proximity is close enough to allow efficient π-π interactions and therefore distinctly different packing and ring orientations for monomers with odd or even numbers of methylenes in their alkyl spacers.

Fabrication of reproducible, integration-compatible hybrid molecular/si electronics.

Reproducible molecular junctions can be integrated within standard CMOS technology. Metal-molecule-semiconductor junctions are fabricated by direct Si-C binding of hexadecane or methyl-styrene onto oxide-free H-Si(111) surfaces, with the lateral size of the junctions defined by an etched SiO2 well and with evaporated Pb as the top contact. The current density, J, is highly reproducible with a standard deviation in log(J) of 0.

A possible case of cherubism in a 17th-century Korean mummy.

Cherubism is a benign fibro-osseous disease of childhood limited specifically to the maxilla and mandible. The progressive replacement of the jaw bones with expansile multilocular cystic lesions causes eventual prominence of the lower face, and hence the classic "cherubic" phenotype reflecting variable extents of jaw hypertrophy. Histologically, this condition has been characterized as replacement of the normal bone matrix with multicystic pockets of fibrous stroma and osteoclastic giant cells.

The occurrence of venous thromboembolism in cancer patients following major surgery.

Background: Venous thromboembolism (VTE), encompassing deep vein thrombosis (DVT) and pulmonary embolism (PE), is common in cancer patients and surgery is an important risk factor.

Objective: To describe the occurrence of VTE in cancer patients following major surgery and to determine the risk of VTE recurrence.

Methods: Using the administrative health claims (RAMQ) and hospital discharge (MED-ECHO) databases of the province of Québec, Canada, we constructed a cohort of all individuals with incident VTE between January 1, 1994 and December 31, 2004 diagnosed with cancer and who had major surgery in the 91days prior to the VTE.

MRI evaluation of bone marrow changes in the diabetic foot: a practical approach.

One of the most important roles of magnetic resonance (MR) in imaging of the diabetic foot is to differentiate between the common and often comorbid pathologies that present with abnormal bone marrow signal. The primary diagnostic challenges in this setting are to distinguish osteomyelitis from reactive bone marrow edema, neuroarthropathy from osteomyelitis, and the sterile from the superinfected neuropathic joint. Whereas both osteomyelitis and reactive marrow edema share increased T2 signal, osteomyelitis is confirmed by T1 hypointensity in the bone marrow and reactive edema demonstrates isolated T2 signal hyperintensity.

A controlled study of the effects of alendronate in a growing mouse model of osteogenesis imperfecta.

Recent studies have reported that bisphosphonates reduce fracture incidence and improve bone density in children with osteogenesis imperfecta (OI). However, questions still persist concerning the effect of these drugs on bone properties such as ultrastructure and quality, particularly in the growing patient. To address these issues, the third-generation bisphosphonate alendronate was evaluated in the growing oim/oim mouse, an animal model of moderate-to-severe OI.

The material basis for reduced mechanical properties in oim mice bones.

Osteogenesis imperfecta (OI), a heritable disease caused by molecular defects in type I collagen, is characterized by skeletal deformities and brittle bones. The heterozygous and homozygous oim mice (oim/+ and oim/oim) exhibit mild and severe OI phenotypes, respectively, serving as controlled animal models of this disease. In the current study, bone geometry, mechanics, and material properties of 1-year-old mice were evaluated to determine factors that influence the severity of phenotype in OI.

Identification of the oim mutation by dye terminator chemistry combined with automated direct DNA sequencing.

The homozygous oim/oim mouse, a model of moderate-to-severe human osteogenesis imperfecta, contains a G-nucleotide deletion in the Cola-2 gene (the murine pro alpha(I) collagen gene) that results in accumulation of alpha1(I) homotrimer collagen. Although these mice have a distinctive phenotype that includes multiple fractures and deformities, genotyping is necessary to distinguish them from their wildtype (+/+) and heterozygote (oim/+) littermates. In this study, the dye primer and dye terminator chemistry methods, in combination with automated direct DNA sequencing, were compared for accuracy and ease in genotyping.

An assessment of DNA contamination risks in New York City Medical Examiner facilities.

DNA evidence holds an important position in criminal investigations and proceedings. The polymerase chain reaction (PCR) is often utilized to amplify polymorphic regions of DNA which are subsequently typed to produce distinct genotypes. The sensitivity of PCR-based techniques provides a major advantage over other DNA or conventional serological typing systems.

Factors influencing the awake-sleep difference in ambulatory blood pressure: main effects and sex differences.

The purpose of this study was to assess the biological and behavioural characteristics associated with the variation in the awake-sleep blood pressure (BP) difference in a large series of patients who had ambulatory BP monitoring. The 1186 subjects in the study (689 men and 497 women) each wore an ambulatory BP monitor over one 24 h period. All patients had been off antihypertensive medication for at least 3 weeks prior to the BP monitoring.