Reactions of the anticancer active dirhodium tetraacetate (1), Rh(AcO) (AcO = CHCOO), with the amino acid histidine (HHis) and human serum albumin (HSA) were monitored over time and different metal: ligand ratios using UV-vis spectroscopy and/or electro-spray ionization mass spectrometry. Initially, histidine formed 1:1 and 1:2 adducts in aqueous solutions. The crystal structure of Rh(AcO)(L-HHis)·2HO (2) confirmed the axial coordination of histidine imidazole groups (average Rh-N 2.23 Å). These adducts, however, were found to be unstable in solution over time (24 h). Heating Rh(AcO) -histidine solutions to 40 °C (near body temperature) or 95 °C accelerated the formation of Rh(AcO)(His) and Rh(His)(AcO) complexes. The corresponding pH change from neutral to mildly acid (pH 4-5) indicates deprotonation of histidine NH groups due to coordination to Rh ions, which simultaneously bind to histidine COO groups, as evidenced by C NMR spectroscopy. In the case of HSA with 16 histidine and one cysteine residues, UV-vis spectroscopy indicates that mono- and di-histidine HSA adducts with Rh(AcO) are formed. X-ray absorption spectroscopy showed almost the same Rh-Rh distance (2.41 ± 0.01 Å) for the Rh(AcO) units as in 2, and a contribution from an axial thiol coordination (Rh-S 2.62 ± 0.05 Å). The Rh(AcO) - HSA complex was found to decompose partially (~15%) over 24 h at ambient temperature. The partial decomposition of Rh(AcO) both through coordination to histidine or to human serum albumin, the most abundant protein in blood plasma, is a factor to consider for its efficacy as a potential anticancer agent.
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http://dx.doi.org/10.1016/j.jinorgbio.2021.111556 | DOI Listing |
JAMA Netw Open
January 2025
Department of Pediatric Intensive Care Medicine, Life Support Center, Hacettepe University, Ankara, Turkey.
Importance: This study addresses the characteristics, kidney replacement therapy (KRT) modalities, and outcomes in children diagnosed with crush syndrome following an earthquake in Turkey.
Objective: To analyze the associations of different KRT modalities with long-term dialysis dependency and length of stay (LOS) in the pediatric intensive care unit (PICU).
Design, Setting, And Participants: This multicenter, prospective, and retrospective cohort study was conducted across 20 PICUs in Turkey.
J Cancer Res Clin Oncol
January 2025
Department of Neurology, The First Affiliated Hospital of Soochow University, 899 Pinghai Road, Suzhou City, Jiangsu Province, China.
Objective: To investigate the synergistic effects of combined sleep interventions and enhanced nutritional support on postoperative recovery in colon cancer patients, with a focus on sleep quality, nutritional status, pain management, psychological well-being, and quality of life.
Methods: This randomized controlled trial included 290 postoperative colon cancer patients admitted to the First Affiliated Hospital of Soochow University between May 2021 and May 2023. Participants were randomized into two groups: the intervention group, which received standard care supplemented with sleep and nutritional interventions, and the control group, which received standard care alone.
Chem Biodivers
January 2025
SRM Institute of Science and Technology - NCR Campus, chemistry, Department of Chemistry, SRM Institute of Science and Technology, Delhi NCR Camp, India, 241405, Modinagar, INDIA.
This review paper provides an inclusive overview of the intricate interactions amid ionic liquids (ILs) and essential biomacromolecules, mainly Hemoglobin (Hb), Bovine Serum Albumin (BSA), Human Serum Albumin (HSA), and Calf Thymus-DNA (CT-DNA). ILs have recently become a topic of great attention because of their inimitable physicochemical properties and potential uses in different fields. The review systematically explores the binding mechanisms, thermodynamics, and structural changes induced by ILs on Hb, BSA, HSA, and CT-DNA using spectroscopic, thermodynamic, and computational techniques.
View Article and Find Full Text PDFClin Transplant
February 2025
Department of Transplant Nephrology, Transplant Surgery Institute, Beth Israel Deaconess Medical Center, Boston, Massachusetts, USA.
Calcineurin inhibitors have been the choice for maintenance immunosuppression (IS) in kidney transplant recipients (KTR), but they are associated with nephrotoxicity and metabolic side effects. We aim to compare the long-term outcomes of KTR on belatacept (bela) versus tacrolimus (tac) IS, in all KTRs and various subgroups. Using the UNOS-STAR files, we identified adult first-KTR from 2010 to 2022.
View Article and Find Full Text PDFClin Transplant
February 2025
Division of Transplantation Surgery, Department of Surgery, Johns Hopkins Hospital, Baltimore, Maryland, USA.
Introduction: Hepatic epithelioid hemangioendothelioma (HEH) is a rare indication of liver transplant with limited evidence.
Methods: Adult recipients undergoing first-time liver-only transplant from 2002 to 2021 in the United States were identified using the UNOS/OPTN database. We compared post-transplant outcomes of recipients receiving liver transplant for HEH versus other diagnoses.
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