Publications by authors named "Kiselev P"

Hematopoietic stem cell transplantation (HCT) is indicated for patients with higher-risk (HR) myelodysplastic syndromes (MDS) and acute myeloid leukemia (AML). Age, performance status, patient frailty, comorbidities, and nonclinical factors (eg, cost, distance to site) are all recognized as important clinical factors that can influence HCT referral patterns and patient outcomes; however, the proportion of eligible patients referred for HCT in routine clinical practice is largely unknown. This study aimed to assess patterns of consideration for HCT among patients with HR-MDS and AML enrolled in the Connect® Myeloid Disease Registry at community/government (CO/GOV)- or academic (AC)-based sites, as well as to identify factors associated with rates of transplantation referral.

View Article and Find Full Text PDF

Predicting personality traits from social networking site profiles can help to assess individual differences in verbal reasoning without using long questionnaires. Inspired by earlier studies, which investigated whether abstract-thinking ability are predictable by social networking sites data, we used supervised machine learning to predict verbal-reasoning ability based on a proposed set of features extracted from virtual community membership. A large sample (N = 3,646) of Russian young adults aged 18-22 years approved access to the data from their social networking accounts and completed an online test on verbal reasoning.

View Article and Find Full Text PDF
Article Synopsis
  • The study investigates the frequency of ring sideroblasts (RS) and SF3B1 gene mutation testing in lower-risk myelodysplastic syndromes (MDS) before and after the 2016 WHO classification criteria were published.
  • Out of 489 LR-MDS patients, a high percentage underwent RS assessment, but a low percentage of those with less than 15% RS were tested for SF3B1 mutations, indicating a gap in testing practices.
  • No significant change in RS assessment rates was observed post-publication of WHO guidelines, highlighting a need for improved education on the importance of genetic testing in these patients.
View Article and Find Full Text PDF

Health-related quality of life (HRQoL) in patients with chronic lymphocytic leukemia (CLL) is important in guiding treatment decisions. However, the impact of CLL treatment initiation on HRQoL is unclear. We assessed HRQoL using the FACT-Leu and EQ-5D-3L questionnaires in the Connect CLL Registry, a large, US-based, multicenter, prospective observational study of CLL patients enrolled between 2010 and 2014, prior to the introduction of novel therapies.

View Article and Find Full Text PDF
Article Synopsis
  • The study focuses on diagnostic and molecular genetic testing for older patients with acute myeloid leukemia (AML), analyzing data from 565 patients aged 55 and older enrolled in a disease registry in the U.S.
  • It found that the majority of patients had their bone marrow characteristics assessed, with high rates of testing using flow cytometry and karyotyping; however, molecular testing was performed more in academic settings compared to community/government sites.
  • The research highlights a significant rise in molecular testing patterns since 2016, aiming to reveal gaps in current practices that could enhance guidelines for diagnosing AML patients.
View Article and Find Full Text PDF

Optimal treatment of chronic lymphocytic leukemia (CLL) remains unclear. The Connect CLL Registry, a United States-based multicenter prospective observational cohort study, enrolled 1494 patients between 2010 and 2014 from predominantly community-based settings. Patients were grouped by line of therapy (LOT) at enrollment.

View Article and Find Full Text PDF
Article Synopsis
  • The study aimed to create a better understanding of how patients with myelodysplastic syndromes (MDS) in the USA are treated and what factors affect their access to disease-modifying therapy.
  • It analyzed data from over 5,000 MDS patients treated between 2006 and 2014, finding that most patients primarily received erythropoiesis-stimulating agents (ESAs) and that only a small percentage received other disease-modifying therapies like lenalidomide (LEN) and hypomethylating agents (HMAs).
  • Key factors influencing quicker access to disease-modifying therapy included having fewer health complications, a more recent diagnosis, lower initial hemoglobin levels, being younger than 80, and
View Article and Find Full Text PDF

Clinical trials that led to ibrutinib's approval for the treatment of chronic lymphocytic leukemia showed that its side effects differ from those of traditional chemotherapy. Reasons for discontinuation in clinical practice have not been adequately studied. We conducted a retrospective analysis of chronic lymphocytic leukemia patients treated with ibrutinib either commercially or on clinical trials.

View Article and Find Full Text PDF

A 'watch-and-wait' strategy is recommended for most patients with early-stage chronic lymphocytic leukemia (CLL) prior to treatment initiation. In the Connect CLL registry, a prospective observational cohort study of 1494 patients treated in 199 US centers, median time to first-line treatment initiation was 3.8, 1.

View Article and Find Full Text PDF

Introduction: Prognostic genetic testing is recommended for patients with chronic lymphocytic leukemia (CLL) to guide clinical management. Specific abnormalities, such as del(17p), del(11q), and unmutated IgHV, can predict the depth and durability of the response to CLL therapy.

Patients And Methods: In the present analysis of the Connect CLL Registry (ClinicalTrials.

View Article and Find Full Text PDF

Chemoimmunotherapy for chronic lymphocytic leukemia (CLL) promotes clonal evolution of aggressive clones, which in some patients may lead to early progression of disease (POD). We studied the prognostic value of early POD in a cohort of patients with CLL enrolled between 2010 and 2014 in the Connect CLL Registry. Overall, 829 eligible patients receiving first-line therapy were categorized into 3 groups: early POD (progression <2 years after treatment initiation), late POD (progression ≥2 years after treatment initiation), and no POD as of 1 May 2017.

View Article and Find Full Text PDF

Background: Ibrutinib, idelalisib, and venetoclax are approved for treating CLL patients in the United States. However, there is no guidance as to their optimal sequence.

Patients And Methods: We conducted a multicenter, retrospective analysis of CLL patients treated with kinase inhibitors (KIs) or venetoclax.

View Article and Find Full Text PDF

Background: Median age at diagnosis of patients with chronic lymphocytic leukemia (CLL) is > 70 years. However, the majority of clinical trials do not reflect the demographics of CLL patients treated in the community. We examined treatment patterns, outcomes, and disease-related mortality in patients ≥ 75 years with CLL (E-CLL) in a real-world setting.

View Article and Find Full Text PDF

The clinical course of chronic lymphocytic leukaemia (CLL) is heterogeneous, and treatment options vary considerably. The Connect CLL registry is a multicentre, prospective observational cohort study that provides a real-world perspective on the management of, and outcomes for, patients with CLL. Between 2010 and 2014, 1494 patients with CLL and that initiated therapy, were enrolled from 199 centres throughout the USA (179 community-, 17 academic-, and 3 government-based centres).

View Article and Find Full Text PDF

B-cell receptor kinase inhibitor (KI) therapy represents a paradigm shift in chronic lymphocytic leukemia (CLL) management, but data on practice patterns after KI discontinuation and optimal sequencing are limited. We conducted a multicenter, retrospective, comprehensive analysis on 178 patients with CLL (ibrutinib = 143; idelalisib = 35) who discontinued KI therapy. We examined responses, toxicity, post-KI therapies, and overall survival (OS).

View Article and Find Full Text PDF

Possible pathways by which brassinosteroids affect the monooxygenase enzymatic system of mammalian liver microsomes, which is involved in the transformation of a broad spectrum of xenobiotics, were studied. The role of the structure of the side chain of brassinosteroids in the regulation of monooxygenase activity was studied using two natural compounds (24-epibrassinolide and 28-homobrassinolide) and two synthetic analogues, (22S, 23S-dihydroxy) stereoisomers. The results of this study show that brassinosteroids can directly influence the functioning of the microsomal enzymatic system.

View Article and Find Full Text PDF

Introduction: Noise pollution is known to cause deleterious effects on human health and may especially affect frail elderly patients with poor mental and physiologic reserve.

Aims Of The Study: (i) to learn levels and time- and place-patterns of noise in an urban community teaching hospital (TH) and affiliated urban nursing home (NH); (ii) to compare levels and patterns of noise in both institutions.

Results: Recordings were obtained in three areas of the TH: emergency room (ER), intensive care units (ICU), and medical-surgical floors (HF) - nurses' stations and patients' rooms.

View Article and Find Full Text PDF

Two new derivatives of phosphatidylcholine with intramolecular fluorescence quenching were obtained by substituting residues of pyrene butyric and bromine-containing fatty acids for acyl chains. The two compounds can be used for quantitative evaluation of catalytic activity of pancreatic phospholipase A2 in kinetic mode.

View Article and Find Full Text PDF

Background: Formoterol is a beta2-adrenergic agent which, when inhaled, produces rapid and long-lasting bronchodilatation.

Objective: The aim of this study was to compare the efficacy, safety, and tolerability of formoterol powder for inhalation delivered via the Aerolizer device with placebo and with albuterol delivered via metered-dose inhaler in patients with mild to moderate persistent asthma.

Methods: In a multicenter, double-blind, parallel-group study, 541 patients were randomized at 26 trial sites to receive either formoterol, 12 microg twice daily; formoterol, 24 microg twice daily; albuterol, 180 microg four times daily; or a placebo for 12 weeks.

View Article and Find Full Text PDF

Cysteine beta-93 SH-groups of horse and bovine methemoglobins (metHb) were modified by N-(1-oxyl-2,2,6,6-tetramethyl-4-piperidinyl)iodoacetamide. Effects of pH, F-, CN-, oleic acid, and sodium dodecyl sulfate on spin and conformational dynamics of the protein were studied by electron and EPR spectroscopy. Oleic acid and CN- had similar effects on both parameters.

View Article and Find Full Text PDF

The reversed-phase HPLC of porcine insulin modified by fluorescent labeling with dansyl chloride, fluorescein isothiocyanate, and an N-hydroxysuccinimide ester of 3-carboxyl derivative of Nile Red was studied. Mono-, di-, and tri-Dns-insulins (substituted at residues Gly1 of the A-chain and Phe1 and Lys29 of the B-chain), as well as isomeric 5'- and 6'-fluorescein thiocarbamoyl-Phe1 insulin derivatives were separated on the analytical and semipreparative scale. The results were interpreted in terms of conservation of the globular structure in the modified proteins and their surface-mediated interaction with the reversed-phase sorbent.

View Article and Find Full Text PDF

Background And Methods: Maternal-infant transmission is the primary means by which young children become infected with human immunodeficiency virus type 1 (HIV). We conducted a randomized, double-blind, placebo-controlled trial of the efficacy and safety of zidovudine in reducing the risk of maternal-infant HIV transmission. HIV-infected pregnant women (14 to 34 weeks' gestation) with CD4+ T-lymphocyte counts above 200 cells per cubic millimeter who had not received antiretroviral therapy during the current pregnancy were enrolled.

View Article and Find Full Text PDF

The relationship between temperature-induced structural changes in the lipid and protein thyroxine-binding zones of lipoprotein particles containing human apolipoprotein A-1 (apoA-1) as a sole protein component was studied using ESR with probes of two types--spin-labeled thyroxine and 5- or 16-doxylstearic acids. A structural rearrangement in the protein active site at 23-24 degrees was found. In the same temperature range, a dramatic change in the monolayer phospholipid ordered structure was observed.

View Article and Find Full Text PDF

A protein having a molecular mass of about 25 kWa was isolated by thyroxin (T4)-Sepharose affinity chromatography from human blood serum; its properties were found to be distinct from those of known T4-binding proteins. Using immunodiffusion, radioimmunoassay, lipid analysis, differential precipitation and electrophoresis, it was shown that the isolated protein is a component of high density lipoprotein (HDL) particles and represents an apolipoprotein A-1 (apoA-1). Using cholate-Sepharose chromatography apoA-1 was separated from the lipid moiety and contaminant proteins, and apoA-1 was effectively isolated directly from the blood serum.

View Article and Find Full Text PDF