Photochemical Transformations of Peptides Containing the -(2-Selenoethyl)glycine Moiety.

The diselenide bond has attracted considerable attention due to its ability to undergo the metathesis reaction in response to visible light. In our previous study, we demonstrated visible-light-induced diselenide metathesis of selenocysteine-containing linear peptides, allowing for the convenient generation of peptide libraries. Here, we investigated the transformation of linear and cyclic peptides containing the -(2-selenoethyl)glycine moiety.

Visible Light-Induced Templated Metathesis of Peptide-Nucleic Acid Conjugates with a Diselenide Bridge.

The use of template molecules as chemical scaffolds that significantly influence the course of the reaction has recently been intensively studied. Peptide nucleic acids (PNA) are molecules that mimic natural nucleic acids. They are a promising matrix in such reactions because they possess high affinity and specificity in their interactions.

Biomarkers that Can Predict the Diagnosis of an Anterior Cruciate Ligament Injury on MR Images, Preoperatively.

PURPOSE OF THE STUDY The competence of the anterior translation of tibia (ATT), posterior cruciate ligament angle (PCLA), and femorotibial rotation angle (FTRA) measured on MR images in predicting anterior cruciate ligament (ACL) injury was evaluated in this study. MATERIAL AND METHODS 266 patients who underwent diagnostic arthroscopy between 2015-2020 were included in this study. Age, gender, radiological fi ndings included ATT, PCLA, and FTRA were measured on preoperative MR images of all patients.

In silico interactions and deep neural network modeling for toxicity profile of methyl methanesulfonate.

In this study, the toxicity induced by the alkylating agent methyl methanesulfonate (MMS) in Allium cepa L. was investigated. For this aim, bulbs were divided into 4 groups as control and application (100, 500 and 4000 µM MMS) and germinated for 72 h at 22-24 °C.

Selenium in Peptide Chemistry.

In recent years, researchers have been exploring the potential of incorporating selenium into peptides, as this element possesses unique properties that can enhance the reactivity of these compounds. Selenium is a non-metallic element that has a similar electronic configuration to sulfur. However, due to its larger atomic size and lower electronegativity, it is more nucleophilic than sulfur.

Evaluation of the relationship between acute kidney injury and renin angiotensin system inhibition in COVID-19 patients.

Objective: In patients with coronavirus disease 2019 (COVID-19), acute kidney injury (AKI) may alter the clinical course and outcome of the disease. In this study, the association of AKI with renin angiotensin system (RAS) inhibitor treatment and its clinical consequences were examined in COVID-19 patients admitted to our hospital during the initial stages of the pandemic.

Methods: A total of 407 patients between 18 and 85 years of age (202 male and 205 female) admitted to the Umraniye Research And Training Hospital between May 2020 and August 2020 with a diagnosis of COVID-19 were included in the study.

Real-life experience of tofacitinib in patients with treatment-resistant rheumatoid arthritis: A 5-year follow-up: Monocentric experience.

Objective: The present study aims to assess the short- and long-term effects of tofacitinib (TOFA) therapy on efficacy, safety, and drug retention rate patients with rheumatoid arthritis (RA) refractory to conventional synthetic disease-modifying anti-rheumatic drugs (csDMARDs) and/or biological disease-modifying anti-rheumatic drugs (bDMARDs).

Methods: Thirty-five patients with RA who received TOFA therapy for at least 3 months in rheumatology outpatient clinic between December 2015 and December 2020 were included in the study. The prospectively follow-up results of the patients obtained on the 6 month and 5 year are presented.

Prevalence of Malnutrition According to the Global Leadership Initiative on Malnutrition Criteria in Community-dwelling Older Adults in Turkey.

Objective: This study aimed to investigate the prevalence of malnutrition according to the Global Leadership Initiative on Malnutrition (GLIM) criteria in community-dwelling older adults in Turkey.

Methods: Malnutrition was assessed based on the GLIM criteria, and Mini-Nutritional Assessment-Short Form was used for screening. The severity of malnutrition was determined as severe or moderate based on the phenotypic criteria of GLIM.

Clinical outcomes of patients with COVID-19 and inflammatory rheumatic diseases receiving biological/targeted therapy.

Background: Anti-cytokine treatments are used in the treatment of severe COVID-19. Other studies have shown statistical significance with TNF inhibitors but not with other biological/targeted synthetic disease-modifying anti-rheumatic drugs (b/tsDMARD).

Objectives: Compare the rate of severe acute respiratory syndrome coronavirus-2 (SARS-COV-2) infection and the course and incidence of COVID-19 infection in patients who received b/tsDMARD with control patients.

A Case of IgG4-related Mesenteritis and Ankylosing Spondylitis.

Immunoglobulin G4-related disease (IgG4-RD) is a systemic fibroinflammatory disease of unknown etiology and pathogenesis, which can affect all organs. The most commonly involved organs are the pancreas, hepatobiliary system, salivary glands, orbits and lymph nodes. Rarely, the thyroid, pituitary, aorta, lung and kidney may also be involved; mesenteric involvement is rare.

The Prevalence and Associated Factors of Reduced Bone Mineral Density (BMD) Among Men with Suppressed Viral Load Taking Antiretroviral Therapy.

Background: Reduced bone mineral density (BMD) is a frequent comorbidity observed in people living with HIV (PLHIV).

Objective: The aim of the study is to determine the prevalence and associated factors of reduced bone mineral density (BMD) among men with suppressed viral load taking antiretroviral therapy.

Methods: The study was conducted as a cross-sectional design between January to April 2019.

Evaluation of factors affecting the frequency and clinical course of COVID-19 in patients using anti-TNF-alpha agents.

Objectives: Patients being treated with anti-tumor necrosis factor-alpha (anti-TNF-alpha) agents were reported to have better prognosis related to COVID-19. We evaluated the factors affecting the frequency, clinical course, and outcome of COVID-19 in patients treated with anti-TNF-alpha agents.

Methods: Patients with rheumatoid diseases and chronic inflammatory bowel diseases treated with anti-TNF-alpha agents were evaluated retrospectively.

Can Monocytopenia Be a New Indicator in Determining Survival in Covid-19 Disease?

Background: Monocytes play a central role in Covid-19 infection. Monocytopenia is especially observed in patients with severe infection. In our study, we aimed to investigate the effects of monocytopenia on survival in patients presenting with the suspicion of Covid-19.

COVID-19 Among Patients With Inflammatory Rheumatic Diseases.

Background: The course of novel coronavirus disease 2019 (COVID-19) has been of special concern in patients with inflammatory rheumatic diseases (IRDs) due to the immune dysregulation that may be associated with these diseases and the medications used for IRDs, that may affect innate immune responses.

Objective: In this cohort study, we aimed to report the disease characteristics and variables associated with COVID-19 outcome among Turkish patients with IRDs.

Methods: Between April and June, 2020, 167 adult IRD patients with COVID-19 were registered from 31 centers in 14 cities in Turkey.

The Relationship between Vitamin D Level and Lower Urinary Tract Symptoms in Women.

Objectives: In the literature, the effects of vitamin D on lower urinary tract symptoms (LUTS) have been investigated. Conflicting results have been reported in these studies conducted. LUTS is more common in women.

The fine structure of the turbot eye (Scophtalmus maximus): A macro-anatomical, light and scanning electron microscopical study.

In fish species, the morphological structure of the eye varies depending on environmental conditions. Morphometric data about the sensory organs of fish is lacking. Therefore, this study aims to describe the morphological structure of the turbot eye using gross, light and scanning electron microscope examinations.

Favorable retention rates and safety of conventional anti-rheumatic drugs in older patients with rheumatoid arthritis.

Physicians are challenged by the recognition and treatment of older patients with rheumatoid arthritis (RA). The aim of this case-control study was to evaluate the retention and safety of conventional disease-modifying anti-rheumatic drugs in older patients with RA.In this observational case-control study, we assessed older patients with RA (≥65 years) who were diagnosed in 3 different rheumatology centers from Turkey.

Light-Driven Diselenide Metathesis in Peptides.

Peptides containing selenocysteine moieties are susceptible to non-catalytic reactions of diselenide bonds metathesis induced by visible light. In contrast to previously reported radical metathesis of disulfide bridges in cysteine derivatives, this newly developed reaction is fast and clean, and proceeds without decomposition of peptides and without formation of side products. The diselenide bond in peptides was reported in literature to be more stable than the disulfide one and also less susceptible to metathesis induced by thiols and reducing reagents.

Increased serum leptin levels are associated with metabolic syndrome and carotid intima media thickness in premenopausal systemic lupus erythematosus patients without clinical atherosclerotic vascular events.

Aim To assess subclinical atherosclerosis and the role of inflammatory mediators, vascular endothelial cell activation markers and adipocytokines in systemic lupus erythematosus (SLE) in the presence or absence of metabolic syndrome (MetS). Methods We studied 66 premenopausal female SLE patients (20 with MetS) and 28 female healthy controls (HCs) without history of cardiovascular disease (CVD). Subclinical atherosclerosis was screened by measuring carotid intima media thickness (CIMT).

Short report: correlates of functional disability with disease activity in elderly patients with rheumatoid arthritis.

Rheumatoid arthritis (RA) prevalence increases with age and old people are special patient population. The recognition of functional disability related to RA could be challenging in elderly patients because aging itself and potential co-morbid disease may also cause functional disability. In this study, we aimed to look at the correlation between disease activity and functional disability in elderly RA patients.

Capillaroscopic findings and vascular biomarkers in systemic sclerosis: Association of low CD40L levels with late scleroderma pattern.

Objective: To determine the relationship between vascular biomarkers reflecting the vascular injury and neoangiogenesis with capillaroscopic changes in systemic sclerosis (SSc).

Methods: Nailfold video-capillaroscopy (NVC) was performed qualitatively (early, active and late scleroderma patterns) in 72 SSc patients (66 female) fulfilling ACR/EULAR (2013) criteria. Serum samples of patients were collected and analysed by flow cytometer with multiplex kits of sCD40L, tPA, MCP-1, sE-selectin, IL-8, IL-6, VEGF, sP-selectin, TGF-β1 and VCAM at the same time with NVC.

Dissemination of thermodynamic temperature above the freezing point of silver.

The mise-en-pratique for the definition of the kelvin at high temperatures will formally allow dissemination of thermodynamic temperature either directly or mediated through high-temperature fixed points (HTFPs). In this paper, these two distinct dissemination methods are evaluated, namely source-based and detector-based. This was achieved by performing two distinct dissemination trials: one based on HTFPs, the other based on absolutely calibrated radiation thermometers or filter radiometers.

Metabolic syndrome is not only a risk factor for cardiovascular diseases in systemic lupus erythematosus but is also associated with cumulative organ damage: a cross-sectional analysis of 311 patients.

Background/purpose: Patients with systemic lupus erythematosus (SLE) have increased rates of cardiovascular disease (CVD) that are one of the major causes of mortality. The aim of this study was to determine the frequencies of metabolic syndrome (MetS) and CVD in SLE patients and investigate the link between these and clinical features of SLE.

Methods: A total of 311 SLE patients were consecutively assessed for cumulative organ damage (SDI/SLICC scores), history of CVD and MetS as defined by the National Cholesterol Educational Program Adult Treatment Panel III (NCEP ATP III).

The relationship between nailfold capillaroscopic assessment and telangiectasia score with severity of peripheral vascular involvement in systemic sclerosis.

Objectives: To determine the association of nailfold video-capillaroscopy (NVC) findings and telangiectasia score with digital ulcer (DU) history and severity of peripheral vascular involvement (PVI) in systemic sclerosis (SSc).

Methods: Fifty-nine SSc patients fulfilling Leroy & Medsger criteria were evaluated including telangiectasia score, disease activity and severity scores. NVC was performed according to qualitative (early, active and late patterns) and semi-quantitative assessments.