Publications by authors named "Bondarenko S"

The outcomes of haploidentical hematopoietic cell transplantation (haplo-HCT) have improved with the implication of new in vivo and ex vivo graft-versus-host disease (GVHD) prophylaxis regimens. However, primary graft failure is still reported more frequently in haplo-HCT compared to a matched donor HCT. We conducted a pilot study (NCT04942730) to evaluate the impact of adding bendamustine to fludarabine and busulfan conditioning on engraftment after haplo-HCT.

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  • A new method was created to trap certain chemical intermediates (benzopyrone-based ortho-quinone methides) using 3- and 5-amino pyrazoles or isoxazoles.
  • Various hybrid compounds were synthesized from natural phenolic Mannich bases and flavonoids, such as coumarin and isoflavone, with moderate to good yields depending on the position of the amino group.
  • Some of the resulting compounds, especially those with 5-aminoisoxazole, showed the ability to inhibit α-glucosidase, demonstrating potential biological activity with micromolar IC values.
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  • The COMMODORE trial tested a new drug called gilteritinib against a treatment called salvage chemotherapy for patients with a type of blood cancer (AML) that has a specific gene mutation (FLT3).
  • Results showed that patients taking gilteritinib lived longer (9.6 months) than those on chemotherapy (5.0 months) and also stayed healthier for longer without problems (2.8 months vs. 0.6 months).
  • Gilteritinib led to fewer severe side effects, with common issues being low red blood cells and low platelet levels, making it a safer option for these patients.
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An efficient green approach for the trapping of generated -and -quinone methide intermediates by imidazoles and pyrazoles has been developed. A wide range of quinone methide precursors based on simple phenols are compatible with the experimental protocol under mild thermal conditions. This methodology was demonstrated to be suitable for the synthesis of methylene-linked benzopyrone-azole hybrids using naturally occurring coumarin and chromone Mannich bases.

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  • IgG4-related disease is a rare chronic condition characterized by infiltration of tissues, fibrosis, and elevated IgG4 levels, affecting less than 1 in 100,000 people annually.
  • It was recognized as a distinct disease in 2001 and can impact various organs, including its association with Riedel's thyroiditis established in 2010.
  • Riedel's thyroiditis is an exceptionally rare inflammatory thyroid disease with complex diagnosis, and there have been fewer than 300 reported cases globally, including only two in children.
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  • - The study examined outcomes of 54 patients who received allogeneic hematopoietic stem cell transplantation (allo-HSCT) after prior COVID-19 infection, compared to 122 patients without previous COVID-19 during the same timeframe.
  • - No significant differences were found in post-transplant complications or outcomes such as non-relapse mortality, relapse incidence, overall survival, and progression-free survival between the two groups.
  • - Overall, prior COVID-19 infection did not appear to impact the effectiveness or safety of allo-HSCT in this patient population.
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Objective: To evaluate the outcomes of children with vesicoureteral reflux (VUR) and obstructive megaureter (OM) utilizing various laparoscopic and robot-assisted approaches.

Materials And Methods: Retrospective review of all pediatric laparoscopic and robot-assisted cases for lower ureter pathology was performed between 2016-2022 in 13 academic centers worldwide. Five surgical approaches were assessed: LEUR, LVCUR, LDECUR, RALUR, and RADECUR.

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A novel cellular response of midgut progenitors (stem cells and enteroblasts) to Plasmodium berghei infection was investigated in Anopheles stephensi. The presence of developing oocysts triggers proliferation of midgut progenitors that is modulated by the Jak/STAT pathway and is proportional to the number of oocysts on individual midguts. The percentage of parasites in direct contact with enteroblasts increases over time, as progenitors proliferate.

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Insulin-like growth factor-binding protein (IGFBP)-2 is a regulator of anabolic pathways, which become inactivated in severe illness. Here, we measured the serum IGFBP-2 levels of COVID-19 patients with moderate and severe disease as well as healthy controls to identify the associations of serum IGFBP-2 levels with disease severity. Patients with severe COVID-19 had higher serum IGFBP-2 levels than those with moderate disease and healthy controls, who had similar levels.

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A series of tribenzo[g,l,q]-6H-1,4-diazepino[2,3-b]porphyrazines has been synthesized. A temperature-dependent steric effect was applied in the mixed Linstead macrocyclization of phthalonitrile and 5,7-bis(2'-arylethenyl)-6-propyl-6H-1,4-diazepine-2,3-dicarbonitrile to achieve high yield of low-symmetry AB-type Mg(II) tribenzo[g,l,q]-6H-1,4-diazepino[2,3-b]porphyrazinate. The analysis of photophysical and photochemical properties of the obtained complexes showed the anti-Kasha effect: the ultrafast spin changes successfully compete with the IC.

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  • - The study investigates the effectiveness of post-transplant cyclophosphamide (PTCy) in preventing graft-versus-host disease (GVHD) in pediatric acute leukemia patients who underwent matched allogeneic hematopoietic stem cell transplantation (allo-HSCT).
  • - A retrospective analysis of 190 children shows that PTCy-based GVHD prophylaxis led to significantly lower rates of acute and chronic GVHD after transplants from matched unrelated donors (MUD) compared to standard treatments.
  • - The findings suggest PTCy is a promising and effective option for GVHD prevention in pediatric patients, particularly in MUD settings, while showing similar efficacy to traditional methods in matched sibling donor (MSD) transplants. *
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  • This analysis reviewed trends in 5185 hematopoietic cell transplantations (HCT) between 1990 and 2022, including 3237 allogeneic (alloHCT) and 1948 autologous (autoHCT) transplants.
  • There was a significant improvement in event-free survival (EFS) for both autoHCT and alloHCT over time, attributed to a decrease in relapse rates and non-relapse mortality, respectively.
  • Specific survival improvements were noted for various conditions, with autoHCT showing better outcomes in Hodgkin's disease and multiple myeloma, while alloHCT advancements were observed mainly in leukemia and lymphomas.
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The posttransplant relapse in Ph-positive ALL increases the risk of death. There is an unmet need for instruments to predict the risk of relapse and plan prophylaxis. In this study, we analyzed posttransplant data by machine learning algorithms.

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Background: Total hip arthroplasty is a common surgical treatment for elderly patients with osteoporosis, particularly in postmenopausal women. In such cases, highly porous acetabular components are a favorable option in achieving osseointegration. However, further discussion is needed if use of such acetabular components is justified under the condition of normal bone mass.

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  • The study aimed to compare two immunosuppressive strategies—rabbit antithymocyte globulin (ATG) and posttransplant cyclophosphamide (PTCY)—for preventing graft-versus-host disease (GVHD) in adults with acute lymphoblastic leukemia (ALL) after receiving a transplant from matched unrelated donors.
  • A total of 896 adult patients (117 with PTCY and 779 with ATG) were analyzed, revealing that while both groups had similar rates of GVHD, the PTCY group showed lower relapse rates and better leukemia-free survival (71% vs. 59%).
  • Although ATG was linked to a reduced risk of extensive chronic GVHD, it corresponded with poorer leukemia-free survival
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Objective: The aim: To develop a mathematical model of selecting the extent of surgical intervention in the spinal tumors.

Patients And Methods: Materials and methods: The retrospective study included 237 patients with spinal tumors who underwent the following surgeries: vertebroplasty (V); vertebroplasty and spinal fixation (F+V); posterior spinal decompression and spinal fixation (F+F); vertebrectomy and replacement of vertebra by a cage with posterior spinal fixation (F+F+K). The mathematical model is based on the modified Spine Instability Neoplastic Score (SINS).

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A novel cellular response of midgut progenitors (stem cells and enteroblasts) to infection was investigated in The presence of developing oocysts triggers proliferation of midgut progenitors that is modulated by the Jak/STAT pathway, and proportional to the number of oocysts on individual midguts. The percentage of parasites in direct contact with enteroblasts increases over time, as progenitors proliferate. Enhancing proliferation of progenitors significantly decreases oocyst numbers, while limiting proliferation increases oocyst survival.

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QSAR analysis of previously synthesized and nature-inspired virtual isoflavone-cytisine hybrids against the HEp-2 laryngeal carcinoma cell lines was performed using the OCHEM web platform. The validation of the models using an external test set proved that the models can be used to predict the activity of newly designed compounds such as 8-cytisinylmethyl derivatives of 5,7- and 6,7-dihydroxyisoflavones. The synthetic procedure for selective aminomethylation of 5,7-dihydroxyisoflavones with cytisine was developed.

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Comparative analysis of epigenetic variability in two pine species affected as a result of the Chernobyl and Fukushima accidents is presented. The absorbed dose rate within the affected Chernobyl sites varies over a wider range (1.5-24.

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Purpose: To evaluate the long-term results of UR and to determine the difference between patients with VUR and OMU in terms of re-obstruction rate, complications associated with pregnancy, and de novo reflux.

Methods: Two-site retrospective study with 69 patients (36 females and 33 males) with a mean age of 5 ± 3.4 years.

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  • The study focuses on the phylogenetic relationships of malaria-carrying mosquitoes in the Maculipennis Group, examining how their traits and evolutionary history affect disease transmission.
  • Phylogenomic analysis of 13 mosquito species revealed that the Palearctic species An. beklemishevi clusters with Eurasian species and showed closer ties to An. freeborni from North America than to An. quadrimaculatus.
  • Migration patterns suggest that these mosquitoes moved from North America to Eurasia around 20-25 million years ago, with significant genetic exchanges occurring between isolated species, impacting their traits and adaptations.
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Pre-transplant measurable residual disease (MRD) predicts relapse and outcome of allogeneic haematopoietic cell transplantation (allo-HCT). The impact of MRD on the outcomes of post-transplant cyclophosphamide (PTCy)-based allo-HCT from a matched unrelated donor (UD) is unknown. This study assessed the impact of MRD in acute myeloid leukaemia (AML) in the first complete remission (CR1).

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