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    Wyświetlanie 1-4 z 4
    Tytuł:
    Właściwości katalityczne i biomedyczne związków zawierających jony rutenu (II) oraz Rutenu (III)
    Catalytic and biomedical properties of compound containing ruthenium (II) and ruthenium (III) ions
    Autorzy:
    Pobłocki, Kacper
    Pawlak, Marta
    Walczak, Juliusz
    Drzeżdżon, Joanna
    Jacewicz, Dagmara Elżbieta
    Powiązania:
    https://bibliotekanauki.pl/articles/27310039.pdf
    Data publikacji:
    2023
    Wydawca:
    Polskie Towarzystwo Chemiczne
    Tematy:
    związki kompleksowe Ru(II)
    związki kompleksowe Ru(III)
    właściwości biomedyczne
    właściwości katalityczne
    Ru(II) complex compounds
    Ru(III) complex compounds
    biomedical properties
    catalytic properties
    Opis:
    Ruthenium complexes appear in scientific publications mainly as catalysts in the olefins metathesis process. In this review, we want to indicate the research niche regarding the use of ruthenium(II) and ruthenium(III) complexes in other catalytic processes, i.e. polymerization or epoxidation of olefins and depolymerization. We would like to combine the catalytic properties of ruthenium(II,III) complex compounds with their biomedical activity due to the growing problem of drug resistance (including antibiotic resistance). Scientists have been designing new metallopharmaceuticals exhibiting biological activity for several years, therefore this requires a critical review of the literature. The main goal of designing new metallodrugs is to create compounds with new or stronger biological properties compared to free ligands. Ruthenium compounds are considered potential substitutes for known drugs. In particular, Ru(II) and Ru(III) based complexes have reduced toxicity and can be tolerated in vivo. In addition, a wide spectrum of ruthenium oxidation states, a different mechanism of action and the kinetics of ligand substitution increase the advantage over coordination complex compounds based on platinum. In conclusion, in this review, we will focus on the latest reports from the literature on the catalytic properties and biomedical activity of ruthenium(II) and ruthenium(III) chemical compounds.
    Źródło:
    Wiadomości Chemiczne; 2023, 77, 5-6; 569--595
    0043-5104
    2300-0295
    Pojawia się w:
    Wiadomości Chemiczne
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zastosowanie związków kompleksowych rutenu, złota, wanadu, chromu, bizmutu, technetu w medycynie. Cz. 2
    Application of coordination compounds of ruthenium, gold, vanadium, chromium, bismuth, technetium in medicine. Part 2
    Autorzy:
    Pawlak, Marta
    Drzeżdżon, Joanna
    Jacewicz, Dagmara
    Powiązania:
    https://bibliotekanauki.pl/articles/1409708.pdf
    Data publikacji:
    2020
    Wydawca:
    Polskie Towarzystwo Chemiczne
    Tematy:
    związki kompleksowe
    radiofarmaceutyki
    obrazowanie medyczne
    właściwości hipoglikemiczne
    complex compounds
    radiopharmaceuticals
    medical imaging
    hypoglycemic properties
    Opis:
    In this review, the most important complex compounds of ruthenium, gold, vanadium, chromium, bismuth, technetium were selected, and then their most important applications were described in medicine. Ruthenium has been identified as a metal with potential medical use, useful in cancer chemotherapy. The possibility of using its chemical behavior by developing complexes activated for cytotoxic activity through a mechanism of reduction in tumor tissue was discovered. Among the new anti-cancer drugs based on complex compounds, gold compounds have gained a lot of interest. This is due to their strong inhibitory effect on the growth of cancer cells and the observation that many compounds inhibit the enzyme thioredoxin reductase. This enzyme is important for the proliferation of cancerous tissues, and its inhibition is associated with the release of anti-mitochondrial effects. Clinical tests have shown that vanadium compounds can be used as anti-diabetic drugs with low toxicity. However, the therapeutic concentration range is very narrow, just a few micromoles of the compound are enough to cause apoptosis, necrosis and inflammation of healthy cells. Chromium improves the glucose system in people with hypoglycemia or hyperglycemia. Vanadium compounds mainly used to create potential drugs are inorganic compounds such as vanadates(V), vanadyl cation(IV), vanadium oxide(V) and a number of compounds containing organic ligands. Among the metal complexes, chromium(III) picolinate has successfully become a nutrient used to prevent high blood sugar levels. One of the most commonly used bismuth(III) compounds is bismuth subsalicylate. It is one of the few bismuth compounds regularly used to treat various gastrointestinal complaints, including duodenal ulcers. 99mTc injected into the body, depending on its chemical form and molecular structure, concentrates in the examined organ and emits a quantum that allows imaging of the organ through flat scintigraphic or emission processes. The role of complex compounds in medical imaging is largely based on the creation of radiopharmaceuticals for early detection of diseases and cancer radiotherapy. Radiopharmaceuticals are radionuclide-containing drugs and are routinely used in nuclear medicine to diagnose or treat a variety of diseases.
    Źródło:
    Wiadomości Chemiczne; 2020, 74, 11-12; 823-851
    0043-5104
    2300-0295
    Pojawia się w:
    Wiadomości Chemiczne
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Związki kompleksowe chromu(III), wanadu(IV) i kobaltu(II) jako nowe prekatalizatory polimeryzacji olefin
    Chromium(III), vanadium(IV) and cobalt(II) complex compounds as new olefin polymerization precatalysts
    Autorzy:
    Drzeżdżon, Joanna
    Powiązania:
    https://bibliotekanauki.pl/articles/171572.pdf
    Data publikacji:
    2020
    Wydawca:
    Polskie Towarzystwo Chemiczne
    Tematy:
    chrom
    wanad
    kobalt
    związki kompleksowe
    prekatalizatory
    polimeryzacja
    chromium
    vanadium
    cobalt
    complex compounds
    precatalysts
    polymerization
    Opis:
    The olefin polymerization catalysts constitute a large group of various compounds. Metallocene complexes are the largest part of this group. However, due to the instability at industrial plastics temperatures and the decomposition of complexes after MAO (or MMAO) activation, they have been partly replaced by non-metallocene compounds. This article concerns the studies on new non- metallocene precatalysts for the olefin polymerization and oligomerization. The report focuses on the structure and the catalytic activities of the complexes of chromium(III), vanadium(IV) and cobalt(II) with the following ligands: dipicolinate, 2-pyridinecarboxylate, oxalate, oxydiacetate, iminodiacetate, 2,2’- bipyridine, 4,4’-dimethoxy-2,2’-bipyridine, 1,10-phenantroline. These complex compounds are highly active precatalysts for olefin polymerization and oligomerization. The complexes: [Cr(dipic)2][Cr(bipy)(dipic)H20]-2H20 and [Cr(dipic) 2]Hdmbipy2.5H20 deserve special attention because they are new type of the precatalysts i.e. organic salt type complexes composed both of organic cations and anions. These compounds are not only interesting because of their structure but also because of their high catalytic activity.
    Źródło:
    Wiadomości Chemiczne; 2020, 74, 5-6; 423-437
    0043-5104
    2300-0295
    Pojawia się w:
    Wiadomości Chemiczne
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Związki kompleksowe na bazie Gd(III), W(IV), Mn(II), Eu(III) i 99mTc wykorzystywane w diagnostyce medycznej
    Complex compounds based on Gd(III), W(IV), Mn(II), Eu(III) and 99mTc used in medical diagnostics
    Autorzy:
    Pobłocki, Kacper
    Drzeżdżon, Joanna
    Jacewicz, Dagmara Elżbieta
    Powiązania:
    https://bibliotekanauki.pl/articles/2200431.pdf
    Data publikacji:
    2022
    Wydawca:
    Polskie Towarzystwo Chemiczne
    Tematy:
    obrazowanie medyczne
    związki kompleksowe
    magnetyczny rezonans jądrowy
    tomografia emisyjna pojedynczego fotonu
    rentgenografia
    obrazowanie optyczne
    medical imaging
    complex compounds
    magnetic resonance imaging
    single-photon emission computed tomography
    rentgenography
    optical imaging
    Opis:
    Recently, hospitals have undergone major changes. Minimally invasive surgery is becoming more common, and numerous innovations are emerging, such as interventional radiology (IVR) and hybrid surgery. In order to keep pace with changes in this extremely dynamic field, scientist keep working on the development of imaging technology and the improvement of image display devices and new compounds acting as contrast agent (CA). In medicine, metals are used for diagnostic and therapeutic purposes. Inorganic elements are increasingly used as contrast agents in medical imaging due to their unique physicochemical properties. In this review, we would like to focus on the latest literature reports that contain information on Gd(III), W(IV), Mn(II), Eu(III) and 99mTc used in medical diagnostics.
    Źródło:
    Wiadomości Chemiczne; 2022, 76, 9-10; 803--823
    0043-5104
    2300-0295
    Pojawia się w:
    Wiadomości Chemiczne
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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