Biomarkers of Neurobiologic Recovery in Adults With Sport-Related Concussion.

Importance: Sport-related concussion (SRC), a form of mild traumatic brain injury, is a prevalent occurrence in collision sports. There are no well-established approaches for tracking neurobiologic recovery after SRC.

Objective: To examine the levels of serum glial fibrillary acidic protein (GFAP) and neurofilament light (NfL) in Australian football athletes who experience SRC.

Hypertrophic cardiomyopathy with anteriorly directed mitral regurgitation is a red flag for concomitant pathology: a case report.

Background: Hypertrophic cardiomyopathy (HCM) is often linked to systolic anterior motion (SAM) of the mitral valve, typically resulting in a posteriorly directed mitral regurgitation (MR) jet. An anteriorly directed MR jet suggests additional mitral valve pathology that may not be resolved by myectomy alone.

Case Summary: A 58-year-old construction worker with no significant medical history experienced a syncopal event and was admitted to the emergency department with acute pulmonary oedema.

Concurrent left ventricular and left anterior coronary artery thrombus: is COVID-19 an innocent bystander?

We present the angiographic findings of a case of myocardial infarction associated with COVID-19 with a heavy burden of thrombus, despite only minor obstructive coronary disease.

Methamphetamine-associated cardiomyopathy: an addiction medicine perspective.

Methamphetamine-associated cardiomyopathy (MaCM) is an increasingly recognised serious complication from methamphetamine (MA) use. It is characterised as the development of otherwise unexplained heart failure in the context of MA use. MaCM predominantly affects a young and vulnerable population with high morbidity and mortality.

Pacing-induced cardiomyopathy: A systematic review and meta-analysis of definition, prevalence, risk factors, and management.

Pacing-induced cardiomyopathy is a potential complication of right ventricular pacing. Definition varies between studies and the optimal management approach is uncertain. We aimed to characterize definition, prevalence, risk factors, and treatment strategies of pacing-induced cardiomyopathy (PiCM).

From Batch to Continuous Flow Bioprocessing: Use of an Immobilized γ-Glutamyl Transferase from for the Synthesis of Biologically Active Peptide Derivatives.

γ-Glutamyl-peptides are frequently endowed with biological activities. In this work, " peptides" such as γ-glutamyl-methionine () and γ-glutamyl-()-allyl-cysteine (), as well as the neuroprotective γ-glutamyl-taurine () and the antioxidant ophthalmic acid (), were synthesized through an enzymatic transpeptidation reaction catalyzed by the γ-glutamyl transferase from (GGT) using glutamine as the γ-glutamyl donor. GGT was covalently immobilized on glyoxyl-agarose resulting in high protein immobilization yield and activity recovery (>95%).

An overall framework for the E. coli γ-glutamyltransferase-catalyzed transpeptidation reactions.

γ-Glutamyl derivatives of proteinogenic or modified amino acids raise considerable interest as flavor enhancers or biologically active compounds. However, their supply, on a large scale and at reasonable costs, remains challenging. Enzymatic synthesis has been recognized as a possible affordable alternative with respect to both isolation procedures from natural sources, burdened by low-yield and by the requirement of massive amount of starting material, and chemical synthesis, inconvenient because of the need of protection/deprotection steps.

An automatable platform for genotoxicity testing of nanomaterials based on the fluorometric γ-H2AX assay reveals no genotoxicity of properly surface-shielded cadmium-based quantum dots.

The large number of nanomaterial-based applications emerging in the materials and life sciences and the foreseeable increasing use of these materials require methods that evaluate and characterize the toxic potential of these nanomaterials to keep safety risks to people and environment as low as possible. As nanomaterial toxicity is influenced by a variety of parameters like size, shape, chemical composition, and surface chemistry, high throughput screening (HTS) platforms are recommended for assessing cytotoxicity. Such platforms are not yet available for genotoxicity testing.

Anti-phospholipid IgG antibodies detected by line immunoassay differentiate patients with anti-phospholipid syndrome and other autoimmune diseases.

Purpose: Anti-phospholipid antibodies (aPL) analyzed by line immunoassay (LIA) can recognize beta-glycoprotein I (βGPI) domain 1 (D1) epitopes depending on βGPI binding to distinct phospholipids. The aPL LIA was compared with consensus ELISA to investigate whether both techniques can discriminate anti-phospholipid syndrome (APS) patients from aPL-positive, systemic autoimmune rheumatic diseases (SARD) patients without clinical symptoms of APS and controls.

Methods: Thirty-four APS patients (14 arterial/venous thrombosis, 16 pregnancy morbidity, and 4 both), 41 patients with SARD lacking clinical APS criteria but demonstrating positivity for anti-βGPI (aβGPI) IgG, and 20 healthy subjects (HS) were tested for aPL to cardiolipin (aCL), phosphatidic acid, phosphatidylcholine, phosphatidylethanolamine, phosphatidylglycerol (aPG), phosphatidylinositol, phosphatidylserine, βGPI, prothrombin, and annexin V by LIA.

Simultaneous comprehensive multiplex autoantibody analysis for rapidly progressive glomerulonephritis.

Rapidly progressive glomerulonephritis (RPGN) is mainly caused by anti-glomerular basement membrane (GBM) antibody-mediated glomerulonephritis, immune-complex or anti-neutrophil cytoplasmic antibody (ANCA)-associated vasculitides and leads to rapid loss of renal function. Detection of ANCA and autoantibodies (autoAbs) to GBM and dsDNA enables early diagnosis and appropriate treatment of RPGN aiding in preventing end-stage renal disease.Determination of ANCA on neutrophils (ANCA) as well as autoAbs to myeloperoxidase (MPO-ANCA), proteinase 3 (PR3-ANCA), GBM, and dsDNA was performed by the novel multiplex CytoBead technology combining cell- and microbead-based autoAb analyses by automated indirect immunofluorescence (IIF).

Antiphospholipid antibodies detected by line immunoassay differentiate among patients with antiphospholipid syndrome, with infections and asymptomatic carriers.

Background: Antiphospholipid antibodies (aPL) can be detected in asymptomatic carriers and infectious patients. The aim was to investigate whether a novel line immunoassay (LIA) differentiates between antiphospholipid syndrome (APS) and asymptomatic aPL+ carriers or patients with infectious diseases (infectious diseases controls (IDC)).

Methods: Sixty-one patients with APS (56 primary, 22/56 with obstetric events only, and 5 secondary), 146 controls including 24 aPL+ asymptomatic carriers and 73 IDC were tested on a novel hydrophobic solid phase coated with cardiolipin (CL), phosphatic acid, phosphatidylcholine, phosphatidylethanolamine, phosphatidylglycerol, phosphatidylinositol, phosphatidylserine, beta2-glycoprotein I (β2GPI), prothrombin, and annexin V.

Autoantibodies to asialoglycoprotein receptor (ASGPR) in patients with autoimmune liver diseases.

Background: The liver asialoglycoprotein receptor (ASGPR) is the only organ-specific autoantigenic target in autoimmune hepatitis (AIH) patients and corresponding autoantibodies (Abs) have been suggested aiding in the serology of autoimmune liver diseases (ALD).

Methods: A novel enzyme-linked immunosorbent assay (ELISA) employing purified rabbit ASGPR was used to detect ASGPR Abs in patients with ALD and controls. ASGPR Ab was determined in sera from 172 patients with AIH type 1, AIH type 2 (n=42), primary biliary cirrhosis (PBC) (n=113), cryptogenic liver disease (n=30), toxic liver disease (n=11), primary sclerosing cholangitis (PSC) (n=27), HCV infection (n=25), non-alcoholic steatohepatitis (n=43) and 100 blood donors.

Autoantibody profiling in APS.

The international consensus for the classification of antiphospholipid syndrome (APS) requires clinical and laboratory criteria to be considered at an equal level for diagnosing APS. Thus, detection of antiphospholipid antibodies (aPL) being a hallmark of APS has been the object of intensive investigation over the past 40 years. However, appropriate detection of aPL still remains a laboratory challenge due to their heterogeneity comprising autoantibodies reactive to different phospholipid-binding plasma proteins, such as beta-2 glycoprotein I (β2GPI) and prothrombin.

The Novel Crohn's Disease Marker Anti-GP2 Antibody Is Associated with Ileocolonic Location of Disease.

Crohn's disease (CD) is an inflammatory bowel disease (IBD) that can affect the whole gastrointestinal tract. The ileocolonic variant of CD, an inflammation of both the ileum and the large intestine, accounts for up to 50% of the cases with CD, whereas Crohn's ileitis affecting the ileum is diagnosed in about 30%. Crohn's colitis, which is confined to the large intestine and accounts for the remaining 20%, is difficult to distinguish from the large bowel inflammation seen in patients with ulcerative colitis (UC).

Erosion of telomeric 3'-overhangs in white blood cells of aged subjects with high frequency of very short telomeres.

After extended proliferation, cells enter a state of replicative quiescence that is probably due to progressive telomere shortening. It is supposed that changes in telomere structure eventually expose the chromosome ends to undesired recombination events and thus promote cell senescence. The telomeric 3'-overhang is crucial for efficient chromosome capping, but its specific role in telomere shortening and in triggering the senescence program is uncertain.

The role of DNA damage response pathways in chromosome fragility in Fragile X syndrome.

FRAXA is one of a number of fragile sites in human chromosomes that are induced by agents like fluorodeoxyuridine (FdU) that affect intracellular thymidylate levels. FRAXA coincides with a >200 CGG*CCG repeat tract in the 5' UTR of the FMR1 gene, and alleles prone to fragility are associated with Fragile X (FX) syndrome, one of the leading genetic causes of intellectual disability. Using siRNA depletion, we show that ATR is involved in protecting the genome against FdU-induced chromosome fragility.

Mechanical irritation induces neurogenic inflammation in the rat urethra.

A catheter was inserted into the urethral meatus of urethane-anaesthetized rats and rotated (30 rotations/minute) during a three minute period. One hour later, microvascular permeability in the distal urethra was evaluated by means of the Evans Blue leakage technique. Dye extravasation increased significantly (74 +/- 12 ng.

Involvement of capsaicin-sensitive nerves of the rat urinary bladder in acrylamide neuropathy.

Acrylamide monomer is neurotoxic in man and experimental animals, producing a sensorimotor distal axonopathy. In spite of remarkable effect of acrylamide on micturition, resulting in urine retention in both man and rat, bladder autonomic innervation has been little studied. This study focused on the effect of acrylamide on capsaicin-sensitive nerves of the rat bladder, because of the role played by these fibres in regulating the afferent arm of reflex micturition.

Motor and inflammatory effect of hyperosmolar solutions on the rat urinary bladder in relation to capsaicin-sensitive sensory nerves.

1. Intravesical administration of hyperosmolar NaCl or urea solutions produced a concentration-dependent stimulatory action on the micturition reflex in urethane-anesthetized rats. This effect was not modified in rats pretreated with capsaicin as adults (50 mg/kg s.

A method for complete removal of pelvic ganglia in female rats.

A new method based on surgical removal and chemically induced degeneration of pelvic ganglia in female rats is described. This combined procedure stems from the difficulty to locate the primary and accessory pelvic ganglia.

Regional differences in the motor and inflammatory responses to capsaicin in guinea pig airways. Correlation with content and release of substance P-like immunoreactivity.

The motor and inflammatory effects of capsaicin, substance P, and neurokinin A, as well as the content and release of substance P-like immunoreactivity (SP-LI), were assessed in the upper and lower guinea pig trachea and in the main bronchus. Capsaicin-induced motor and inflammatory effects were greater in the lower than in the upper tract of the trachea and much more evident at the bronchial than at the tracheal level. On the other hand, no significant regional differences were observed in the potency and efficacy of tachykinins.

Effects of tachykinins and selective tachykinin receptor agonists on vascular permeability in the rat lower urinary tract: evidence for the involvement of NK-1 receptors.

1. Intravenous administration of three mammalian tachykinins (substance P, neurokinin A and neurokinin B) and three non-mammalian tachykinins (physalaemin, eledoisin and kassinin) induced dose-dependent increases in vascular permeability, as measured by Evans blue leakage technique, in various segments of the lower urinary tract (bladder dome and neck, proximal urethra, ureters) in urethane-anaesthetized rats. 2.

A method for studying pain arising from the urinary bladder in conscious, freely-moving rats.

A new technique has been developed suitable for quantitative studies on physio-pharmacology of pain arising from the urinary bladder in conscious freely-moving rats. The method involves the intravesical instillation of xylene or its vehicle (0.3 cc of silicone oil) through a catheter chronically implanted into the rat bladder.

Topical versus systemic capsaicin desensitization: specific and unspecific effects as indicated by modification or reflex micturition in rats.

The aim of this study was to determine the acute and delayed effect of topical application of high concentrations of capsaicin on the rat urinary bladder on micturition reflex and compare the effects of "topical" bladder desensitization with those produced by systemic (subcutaneous administration) capsaicin desensitization. On acute application, capsaicin (1-3%) produced a transient bladder contraction, not observed in capsaicin-pretreated rats. After a transient increase in excitability of the micturition reflex, topical capsaicin suppressed micturition and overflow incontinence ensued which was reverted by intravenous injection of 4-aminopyridine.