Ferulic acid: pharmacological and toxicological aspects.

Ferulic acid (FA) belongs to the family of phenolic acids and is very abundant in fruits and vegetables. Over the past years, several studies have shown that FA acts as a potent antioxidant by scavenging free radicals and enhancing the cell stress response through the up-regulation of cytoprotective systems, e.g.

Performances evaluation of textile electrodes for EMG remote measurements.

This work focus on the evaluation of textile electrodes for EMG signals acquisition. Signals have been acquired simultaneously from textile electrode and from gold standard electrodes, by using the same acquisition system; tests were done across subjects and with multiple trials to enable a more complete analysis. This research activity was done in the frame of the European Project Interaction, aiming at the development of a system for a continuous daily-life monitoring of the functional performance of stroke survivors in their physical interaction with the environment.

Identification of single nucleotide polymorphisms in hematopoietic cell transplant patients affecting early recognition of, and response to, endotoxin.

Hematopoietic cell transplant (HCT) is a life-saving therapy for many malignant and non-malignant bone marrow diseases. Associated morbidities are often due to transplant-related toxicities and infections, exacerbated by regimen-induced immune suppression and systemic incursion of bacterial products. Patients undergoing myeloablative conditioning for HCT become endotoxemic and display blood/plasma changes consistent with lipopolysaccharide (LPS)-induced systemic innate immune activation.

The Janus face of the heme oxygenase/biliverdin reductase system in Alzheimer disease: it's time for reconciliation.

Alzheimer disease (AD) is the most common form of dementia among the elderly and is characterized by progressive loss of memory and cognition. These clinical features are due in part to the increase of reactive oxygen and nitrogen species that mediate neurotoxic effects. The up-regulation of the heme oxygenase-1/biliverdin reductase-A (HO-1/BVR-A) system is one of the earlier events in the adaptive response to stress.

Development and testing of an expectations survey for patients undergoing lumbar spine surgery.

Background: Patients' expectations of lumbar spine surgery have not been obtained with valid and reliable scales derived from patients' perspectives. The objective of this cross-sectional study was to develop and to test a patient-derived expectations survey.

Methods: The survey was developed in three phases.

Ethical challenges in rheumatology: a survey of the American College of Rheumatology membership.

Objective: Despite the frequency of ethical issues arising in patient care, ethical discourse in the rheumatology literature is negligible. To better understand the scope of ethical problems occurring in our specialty, the American College of Rheumatology (ACR) Committee on Ethics and Conflict of Interest surveyed ACR members. Specific objectives of the survey were 1) to learn the perceived frequency of ethical issues in rheumatology, 2) to identify activities that pose ethical problems in rheumatologic practice, 3) to determine the extent of education on, and self-perceived knowledge about, ethics among ACR members, and 4) to determine member interest in, and suggest content for, future ACR-sponsored educational activities related to bioethics.

Subarachnoid hemorrhage and carbon monoxide exposure: accidental association or fatal link?

This case study reports a fatal subarachnoid hemorrhage (SAH) with concomitant accidental carbon monoxide (CO) exposure in 32-year-old man. Autopsy results indicated an antemortem aspiration of smoke, and a massive SAH was identified as the cause of death. Intriguingly, the carboxyhemoglobin level was 30%, suggesting that CO could have played a specific role.

Electron shell ionization of atoms with classical, relativistic scattering.

We investigate forward scattering of ionization from neon, argon, and xenon in ultrahigh intensities of 2 × 10(19) W/cm(2). Comparisons between the gases reveal the energy of the outgoing photoelectron determines its momentum, which can be scattered as far forward as 45° from the laser wave vector k(laser) for energies greater than 1 MeV. The shell structure in the atom manifests itself as modulations in the photoelectron yield and the width of the angular distributions.

Trans-ferulic acid-based solid lipid nanoparticles and their antioxidant effect in rat brain microsomes.

In this study, stearic acid- and stearyl ferulate-based solid lipid nanoparticles containing trans-ferulic acid (SLN-FA and SLN-SF-FA, respectively), were prepared and characterized for loading efficiency, size and shape. In addition, by using rat brain microsomes, we evaluated in vitro the antioxidant activity of these formulations against three well known initiators of lipid peroxidation, such as AAPH, NADPH/ADP-Fe(3+) and SIN-1 which in turn generate the peroxyl and perferryl radicals as well as peroxynitrite, respectively. Commercially available FA and its ethyl ester (FAEE) were used as comparators.

Impairment of proteostasis network in Down syndrome prior to the development of Alzheimer's disease neuropathology: redox proteomics analysis of human brain.

DS is the most frequent genetic cause of intellectual disability characterized by the anomalous presence of three copies of chromosome 21. One of the peculiar features of DS is the onset of Alzheimer's disease neuropathology after the age of 40years characterized by deposition of senile plaques and neurofibrillary tangles. Growing studies demonstrated that increased oxidative damage, accumulation of unfolded/damaged protein aggregates and dysfunction of intracellular degradative system are key players in neurodegenerative processes.

Lack of p53 affects the expression of several brain mitochondrial proteins: insights from proteomics into important pathways regulated by p53.

The tumor suppressor protein p53 has been described "as the guardian of the genome" for its crucial role in regulating the transcription of numerous genes responsible for cells cycle arrest, senescence, or apoptosis in response to various stress signals. Although p53 promotes longevity by decreasing the risk of cancer through activation of apoptosis or cellular senescence, several findings suggest that an increase of its activity may have deleterious effects leading to selected aspects of the aging phenotype and neurodegenerative diseases. There is the link between p53 and oxidative stress, the latter a crucial factor that contributes to neurodegenerative processes like Alzheimer disease (AD).

Improvement in asthma quality of life in patients enrolled in a prospective study to increase lifestyle physical activity.

Objective: Asthma patients know the benefits of exercise but often avoid physical activity because they are concerned that it will exacerbate asthma. The objective of this analysis was to assess longitudinal asthma status in 256 primary care patients in New York City enrolled in a trial to increase lifestyle physical activity.

Methods: Patients were randomized to two protocols to increase physical activity during a period of 12 months.

Development of an expectations survey for patients undergoing cervical spine surgery.

Study Design: Cross-sectional analysis of patient-reported preoperative data.

Objective: To develop a valid and reliable patient-derived expectations survey for patients undergoing cervical spine surgery.

Summary Of Background Data: Measuring expectations is an important component in the assessment of patients undergoing cervical spine surgery.

A neonatal model of intravenous Staphylococcus epidermidis infection in mice <24 h old enables characterization of early innate immune responses.

Staphylococcus epidermidis (SE) causes late onset sepsis and significant morbidity in catheterized preterm newborns. Animal models of SE infection are useful in characterizing disease mechanisms and are an important approach to developing improved diagnostics and therapeutics. Current murine models of neonatal bacterial infection employ intraperitoneal or subcutaneous routes at several days of age, and may, therefore, not accurately reflect distinct features of innate immune responses to bacteremia.

Identifying important predictors for anastomotic leak after colon and rectal resection: prospective study on 616 patients.

Objective: The purpose of this study was to identify patient, clinical, and surgical factors that may predispose patients to anastomotic leak (AL) after large bowel surgery.

Background: Anastomotic leak is still one of the most devastating complications following colorectal surgery. Knowledge about factors predisposing patients to AL is vital to its early detection, decision making for surgical time, managing preoperative risk factors, and postoperative complications.

Translating basic behavioral and social science research to clinical application: the EVOLVE mixed methods approach.

Objective: To describe a mixed-methods approach to develop and test a basic behavioral science-informed intervention to motivate behavior change in 3 high-risk clinical populations. Our theoretically derived intervention comprised a combination of positive affect and self-affirmation (PA/SA), which we applied to 3 clinical chronic disease populations.

Method: We employed a sequential mixed methods model (EVOLVE) to design and test the PA/SA intervention in order to increase physical activity in people with coronary artery disease (post-percutaneous coronary intervention [PCI]) or asthma (ASM) and to improve medication adherence in African Americans with hypertension (HTN).

A pilot study of office-based spirometry in patients with systemic lupus erythematosus.

Background: Although pulmonary involvement is common in systemic lupus erythematosus (SLE), its effects on healthy lifestyle physical activity and its association with fatigue have not been well characterized. The goals of this study were to describe pulmonary function measured by office-based spirometry in patients with SLE and to compare spirometry with physical activity and systemic fatigue.

Methods: During an office visit, 49 patients with SLE completed spirometry assessing: a) forced expiratory volume in 1 s (FEV(1), a measure of airway patency and responsiveness); b) forced vital capacity (FVC, a measure of lung volume); and c) maximum voluntary ventilation (MVV, a measure of volume of air moved during rapid breathing) which has been hypothesized to be decreased in SLE due to muscle fatigue.

Discordance in TKA expectations between patients and surgeons.

Background: Aligning patient and surgeon expectations preoperatively may lead to better postoperative medical and rehabilitation compliance and therefore improve outcomes and increase satisfaction.

Questions/purposes: We (1) determined the rate of discordantly high patient expectations compared with those of their surgeon in patients undergoing TKA; and (2) evaluated the impact of the preoperative educational class, patient characteristics, and functional status on the likelihood of having discordantly high patient expectations.

Methods: We enrolled 205 patients awaiting TKA.

Low vitamin D status does not adversely affect short-term functional outcome after total hip arthroplasty.

We prospectively measured functional performances (Western Ontario and McMaster Universities Osteoarthritis Index, Short Form-36, 2-minute walk test, and timed get-up-and-go test) of patients who underwent total hip arthroplasty (THA) and had serum vitamin D levels tested during the preoperative evaluation. Of 219 patients, 102 (46.6%) had low vitamin D levels (25-hydroxyvitamin D<30 ng/mL).

HO-1/BVR-a system analysis in plasma from probable Alzheimer's disease and mild cognitive impairment subjects: a potential biochemical marker for the prediction of the disease.

Several studies showed increased oxidative and nitrosative stress in plasma from patients with Alzheimer's disease (AD), however, little and controversial knowledge has emerged about the antioxidant functionality of the heme oxygenase-1/biliverdin reductase-A (HO-1/BVR-A) system in blood. The current study reports increased levels of both HO-1 and BVR-A in plasma from probable AD patients, as a result of the increased oxidative environment. However, the increase of oxidative stress in plasma result also in the increase of BVR-A 3-nitrotyrosine levels and the decrease of BVR-A phosphotyrosine levels and reductase activity, suggesting that nitrosative stress play the prominent oxidative role in plasma during AD.

History of symptom triggers in patients presenting to the emergency department for asthma.

Objectives: Understanding triggers is important for managing asthma particularly for patients who seek emergency department (ED) care for exacerbations. The objectives of this analysis were to delineate self-reported triggers in ED patients and to assess associations between triggers and asthma knowledge, severity, and quality of life.

Methods: At the time of an ED visit, 296 patients were asked what were their usual asthma triggers based on a checklist of 25 potential items, and what they thought specifically precipitated their current ED visit.

Inhibition of lipid peroxidation and protein oxidation by endogenous and exogenous antioxidants in rat brain microsomes in vitro.

Reactive oxygen and reactive nitrogen species oxidize and nitrate DNA, lipid and proteins thus leading to neuronal death. Both endogenous and dietary antioxidants were shown to afford neuroprotection either by scavenging free radicals or inducing antioxidant enzymes. That said, the differential contribution of endogenous versus nutritional antioxidants to prevent neurodegeneration is still debated.

Innate immune activation in neonatal tracheal aspirates suggests endotoxin-driven inflammation.

Background: Tracheal aspirates (TAs) from critically ill neonates accumulate bacterial endotoxin and demonstrate mobilization of endotoxin-binding proteins, but the potential bioactivity of endotoxin in TAs is unknown. We characterized innate immune activation in TAs of mechanically ventilated neonates.

Methods: Innate immune activation in TAs of mechanically ventilated neonates was characterized using a targeted 84-gene quantitative real-time (qRT) PCR array.