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Relationship between ventricular arrhythmia and repolarisation parameters in patients with biventricular implantable cardioverter defibrillator.

BACKGROUND: Depolarisation parameters obtained from electrocardiography are the basic parameters in cardiac resynchronisation treatment planning. This study examined the relationship of repolarisation parameters obtained before and after the procedure with ventricular arrhythmias and cardiovascular death in patients who underwent cardiac resynchronisation therapy (CRT)- implantable cardioverter defibrillators (ICD) implantation. METHODS: Patients who applied to have CRT-ICD implantation were included in the study. ECG records taken at the time of hospitalisation for CRT-ICD implantation and a

Effect of Temperature and pH on the Secondary Structure and Denaturation Process of Jumbo Squid Hepatopancreas Cathepsin D.

BACKGROUND: Cathepsin D is a lysosomal enzyme that is found in all organisms acting in protein turnover, in humans it is present in some typ … he enzyme. Once the enzyme was purified, the purity was corroborated with SDS PAGE electrophoresis, isoelectric point and zymogram. Circular dichroism is carried out by placing the sample with a concentration of 0.125 mg / mL in a 3 mL quartz cell. The results were obtained in mdeg (millidegrees) and transformed to mean ellipticity per residue, using 111 g/mol mole …

Expression and gene regulatory network of S100A16 protein in cervical cancer cells based on data mining.

S100A16 protein belongs to the S100 family of calcium-binding proteins, which is widely distributed in human tissues and highly conserved. S100 calcium-binding proteins possess broad biological functions, such as cancer cell proliferation, apoptosis, tumor metastasis, and inflammation (Nat Rev Cancer 15:96-109, 2015). The S100A16 protein was initially isolated from a cell line derived from astrocytoma. The S100A16 protein, consisting of 103 amino acids, is a small acidic protein with a molecular weight of 11,801.4 Da and an isoelectric point (pI) of 6.28 (Biochem Biophys Res Commun 313:237-244…

Verification and tissue-specific expression of nifU-like gene from the amphioxus Branchiostoma belcheri.

A nifU-like gene exhibiting similarity to nifU of nitrogen fixation gene cluster was identified for the first time from the gut cDNA library of amphioxus Branchiostoma belcheri. Both RT-PCR and Northern blotting as well as in situ hybridization histochemistry verified that the cDNA represents an amphioxus nifU-like gene rather than a microbial contaminant. The nifU-like gene encodes a protein of 164 amino acid residues including a highly-conserved U-type motif (C-X(26)-C-X(43)-C), and shares 66-86% identity to NifU-like proteins from a variety of species including vertebrates, invertebrates an

Characterization of a myeloma patient with a life-threatening hemorrhagic diathesis: presence of a lambda dimer protein inhibiting shear-induced platelet aggregation by binding to the A1 domain of von Willebrand factor.

We have identified a patient with IgD lambda-type multiple myeloma who was characterized by a severe bleeding tendency, especially after puncture of arterial vessels. Both the bleeding time (>25 min) and activated partial thromboplastin time (APTT) were prolonged. To clarify the underlying pathogenesis, we purified the APTT-prolonging activity from the patient's serum. The purified protein was a highly negatively-charged homodimer of the lambda light chain. The lambda dimer protein (M-protein) inhibited ristocetinand high shear-induced platelet aggregation, dependent on platelet glycoprotein I

The expression patterns of deubiquitinating enzymes, USP22 and Usp22.

Deubiquitinating enzymes regulate a number of cellular mechanisms including pre-implantation, growth and differentiation, oncogenesis, cell cycle progression, transcriptional activation, and signal transduction. In this study, we have identified a novel human deubiquitinating enzyme gene, USP22, and its mouse homologue, Usp22. They encode 525 amino acids (approximate MW: 60kDa) and contains Cys, Asp (I), His and Asp/Asn (II), the highly conserved domains of the UBP family of deubiquitinating enzymes. The biochemical assay revealed that they have deubiquitinating enzyme activity. Northern blot

Torsade de Pointes Due to Hypokalemia and Hypomagnesemia.

AUDIENCE: This scenario was developed to educate emergency medicine (EM) interns but can be used to educate medical students and junior residents. INTRODUCTION: Torsade de Pointes (TdP) is a rare but potentially fatal arrythmia if not quickly diagnosed and properly treated. TdP is defined as a polymorphic ventricular tachycardia (VT) characterized by an oscillatory change in amplitude around an isoelectric line that is associated with a QTc prolongation on the electrocardiogram (ECG).1 It has been well described to predispose to ventricular fibrillation and arrhythmic death. QTc prolongation

Oxidative damage of DJ-1 is linked to sporadic Parkinson and Alzheimer diseases.

Mutations in DJ-1 cause an autosomal recessive, early onset familial form of Parkinson disease (PD). However, little is presently known about the role of DJ-1 in the more common sporadic form of PD and in other age-related neurodegenerative diseases, such as Alzheimer disease (AD). Here we report that DJ-1 is oxidatively damaged in the brains of patients with idiopathic PD and AD. By using a combination of two-dimensional gel electrophoresis and mass spectrometry, we have identified 10 different DJ-1 isoforms, of which the acidic isoforms (pI 5.5 and 5.7) of DJ-1 monomer and the basic isoforms

Bioinformatics-Driven Design and Evaluation of Recombinant Multi-Epitope Immunogens Derived From Snake Venom Toxins as Potential Antivenom Candidates.

Snakebite envenomation is a major public health concern, particularly in low- and middle-income regions where access to safe and effective a … rable physicochemical properties, including molecular weights ranging from 33.7 to 56.37 kDa, basic isoelectric points, high thermostability (aliphatic index: 66.72-77.08), and hydrophilicity (negative GRAVY scores). Refined 3D models exhibited more than 93% residues in Ramachandran favored regions, suggesting structural reliability. Molecular docking revealed stro …

A method to estimate effects of amino acid substitutions in blood coagulation factor IX from hemophilia B patients.

Hemophilia B is a hereditary disease caused by defects in coagulation factor IX. Accumulation of sequence data in the hemophilia B database … r physical-chemical properties: (1) Molecular volume, (2)Hydropathy, (3) Polar requirement, and (4) Isoelectric point. We also adopted three homology matrices. These matrices are symmetric and composed of 20 x 20 elements, corresponding to amino acid pairs: (1)Dayhoff's 250 PAM matrix, (2) SCM (Structure-derived Correlation Matrix), and (3) SSM (Structure Superposi …

THE DEFORMABILITY AND THE WETTING PROPERTIES OF LEUCOCYTES AND ERYTHROCYTES.

The resistance to deformation of polymorphonuclear neutrophile leucocytes under the conditions of our observations has been shown to be on t … e surface are similar to those fully described for the mammal. A serious source of error in certain isoelectric point determinations is discussed.

STUDIES IN THE SEROLOGY OF SYPHILIS : III. EXPLANATION OF THE FORTIFYING EFFECT OF CHOLESTERIN UPON THE ANTIGEN AS USED IN THE WASSERMANN AND FLOCCULATION TESTS.

When cholesterinized antigen is dropped into an excess of water, the rapid flocculation of cholesterin crystals is prevented by the fact that, as tiny aggregates form, they adsorb a protective surface of hydrophilic lecithin (i.e., antigen) which endows the particles with its own stable surface properties and thus prevents further aggregation. The colloidally dispersed antigen-cholesterin particles have approximately the same isoelectric point (pH 1.9), critical potential (1 to 5 millivolts) and coagulation value (0.75 M NaCl) as pure antigen particles of the same concentration, while the corr…

[Cloning and bioinformatics analysis of surface antigen-related sequence protein SRS67 and SRS20A genes in Toxoplasma gondii].

OBJECTIVE: To predict the structures and immunogenicity of surface antigen-related sequence protein SRS67 and SRS20A in Toxoplasma gondii us … Fs) of SRS67 and SRS20A genes were analyzed in the ORF Finder website. The relative molecular mass, isoelectric point, amino acid composition and lipophilicit index of SRS67 and SRS20A proteins were predicted using the ProtParam software. The protein hydrophilicity/hydrophobicity was predicted using the ProtScale tool, the transmembrane regions were predicted using …

Apolipoprotein E4 serum concentration for increased sensitivity and specificity of diagnosis of drug treated Alzheimer's disease patients vs. drug treated parkinson's disease patients vs. age-matched normal controls.

BACKGROUND: Inasmuch as Alzheimer's disease (AD) is difficult to diagnose, patients with suspected dementias are often given FDA approved me … s, amino acid sequence spans of the identified peptides, and the protein spot molecular weights and isoelectric points. RESULTS: The single variable statistical profiles of 58 individual protein biomarker concentrations of the DTAD patient group differed from those of the normal and/or the disease control groups. Multivariate linear discriminant analysis of blood …

Evaluation of an enzyme-linked immunosorbent assay (ELISA) for the serological diagnosis of canine sarcoptic mange.

Abstract  The purpose of this study was to evaluate a serodiagnostic test (enzyme-linked immunosorbent assay; ELISA) for sarcoptic mange in dogs and to characterize the assay antigen, based on the mite Sarcoptes scabiei var. vulpes. The ELISA, applied to sera from 359 dogs suspected of having sarcoptic mange, showed a sensitivity and specificity of 92 and 96%, respectively. Sodium dodecyl sulphate polyacrylamide gel electrophoresis (SDS-PAGE) of the antigen employed in the ELISA revealed polypeptide bands with molecular weights ranging between 14 and 164 kDa. In Western blot analyses antigens

Schwann Cell Activity in the Multiple Sclerosis Microenvironment.

Schwann cell (SC)-based therapy is currently being debated as an approach to promote functional recovery in patients with multiple sclerosis (MS) and other inflammatory demyelinating diseases of the central nervous system (CNS). The main limitation of SC transplantation in MS patients is the short-term functional activity of SCs in the CNS environment. The goal of this study was to determine phenotypic, functional, and signaling changes in human SCs treated with CSF samples from MS patients in vitro, and to characterize the molecular mechanisms underlying SC injury response in the model MS mic

Индекс Каппы: исследование реального мира для оценки пороговых значений, которые обеспечивают наилучшую точность для многократного склерозного диагноза у пациентов СНГ.

Внутреннее синтезирование иммуноглобулина G (ИТГС) имеет важное значение для диагностирования MS. Олиголональные полосы (ОКС) демонстрируют чувствительность и специфичность, однако их сложность требует их анализа в специализированных лабораториях. В качестве автоматизированной и воспроизводимой альтернативы стало использоваться измерение индекса свободной цепи освещения каппы, который был включен в качестве альтернативы КБМ в соответствии с критериями Макдональда 2024 года. Вместе с тем необходимо установить оптимальное ограничение для прогнозирования диагностирования MS у пациентов с клиничес

Biological Role, Mechanism of Action and the Importance of Interleukins in Kidney Diseases.

Each year, the number of patients who are diagnosed with kidney disease too late is increasing, which leads to permanent renal failure. This growing problem affects people of every age, sex and origin, and its full etiopathogenesis is not fully understood, although the involvement of genetic susceptibility, infections, immune disorders or high blood pressure is suggested. Difficulties in making a correct and quick diagnosis are caused by the lack of research on early molecular markers, as well as educational and preventive activities among the public, which leads to the late detection of kidne

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… This also applies to their molecular weight (11.098–141.752 kDa), isoelectric point (from 4.41 for IL-18 to 10.5 for IL-11) and the contents of the hydrophilic and hydrophobic amino acids in the composition of a molecule ( Table 1 ). … The determination of the isoelectric point of the tested interleukins and their amino acid compositions was carried out using the IPC isoelectric point calculator software available online [ 246 ]. …

Интратективный иммуноглобулин А Обобщение в множестве склероза: от биологических аспектов к клинической значимости.

Интратекальский иммуноглобулин А (IgA) синтез в множестве склерозов (MS) давно не получал достаточного внимания, несмотря на потенциальное значение патогенеза и прогноза заболеваний. Наличие доброкачественных плазменных клеток IgA в повреждениях MS и вдоль поврежденных аксонов свидетельствует о роли в патогенезе болезней. Имеющиеся клинические данные о потенциальной позитивной или негативной прогнозируемой роли являются скудными и неточными. Вместе с тем последние наблюдения свидетельствуют о переходе от кишечника к центральной нервной системе (КНС) в экспериментальные аутоиммунные энцефалитны

Prevention of tooth extraction-triggered bisphosphonate-related osteonecrosis of the jaws with basic fibroblast growth factor: An experimental study in rats.

Osteonecrosis of the jaw induced by administration of bisphosphonates (BPs), BP-related osteonecrosis (BRONJ), typically develops after tooth extraction and is medically challenging. As BPs inhibit oral mucosal cell growth, we hypothesized that suppression of the wound healing-inhibiting effects could prevent BRONJ onset after tooth extraction. Since basic fibroblast growth factor (bFGF) promotes wound healing, but has a short half-life, we examined whether the initiation of BRONJ could be prevented by applying a bFGF-containing gelatin hydrogel over the extraction sockets of BRONJ model rats.

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… Materials and methods Preparation of gelatin hydrogel sheets Gelatin with an isoelectric point of 5.0 was supplied by Nitta Gelatin (Osaka, Japan), and human recombinant bFGF with an isoelectric point of 9.6 was supplied by Kaken Pharmaceutical (Tokyo, Japan). …