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Wyszukujesz frazę "glycoconjugates" wg kryterium: Temat


Wyświetlanie 1-4 z 4
Tytuł:
Engineered atenolol-glycoconjugates to target H9c2 cardiomyocyte cell lines
Autorzy:
Kumbha, Smita Tukaram
Bhatia, Manish Sudesh
Patil, Shitalkumar Shivgonda
Powiązania:
https://bibliotekanauki.pl/articles/2142859.pdf
Data publikacji:
2022
Wydawca:
Centrum Badań i Innowacji Pro-Akademia
Tematy:
glycoconjugates
atenolol
targeting
glikokoniugaty
Opis:
Background: One of the most important fields of biomedical engineering study nowadays is targeted drug delivery to specific cells. A drug's therapeutic efficacy can be improved and optimised by tightly targeting it to a pathophysiologically essential tissue architecture. The goal of this research is to develop saccharide conjugates for the targeted delivery of Atenolol, a -blocker. Methods: Galactose (monosaccharide), pectin (polysaccharide), and chitosan were chosen as the saccharides (polysaccharide). By grafting Atenolol with the modified saccharides, the conjugates were created. Spectroscopic and thermal studies were used to describe the chemically changed saccharides conjugates. H9c2 cell lines were used to conduct drug release research and cellular uptake studies. To investigate cytotoxicity, a brine shrimp lethality test was done. Results: The outcomes exhibit that Atenolol-modified saccharide conjugates can productively convey the medication to the target. Conclusion: It can be inferred that the improvement of saccharide-drug conjugates can be a compelling methodology for targeting cardiovascular medication.
Źródło:
Acta Innovations; 2022, 43; 36-43
2300-5599
Pojawia się w:
Acta Innovations
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Characterization of bovine serum albumin glycated with glucose, galactose and lactose
Autorzy:
Ledesma-Osuna, Ana
Ramos-Clamont, Gabriela
Vázquez-Moreno, Luz
Powiązania:
https://bibliotekanauki.pl/articles/1040702.pdf
Data publikacji:
2008
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
bovine serum albumin glycoconjugates
Maillard reaction
glycation
Opis:
The non-enzymatic reaction between reducing sugars and proteins, known as glycation, has received increased attention from nutritional and medical research. In addition, there is a large interest in obtaining glycoconjugates of pure well-characterized oligosaccharides for biological research. In this study, glycation of bovine serum albumin (BSA) by d-glucose, d-galactose and d-lactose under dry-heat at 60°C for 30, 60, 120, 180 or 240 min was assessed and the glycated products studied in order to establish their biological recognition by lectins. BSA glycation was monitored using gel electrophoresis, determination of available amino groups and lectin binding assays. The BSA molecular mass increase and glycation sites were investigated by mass spectrometry and through digestion with trypsin and chymotrypsin. Depending on time and type of sugar, differences in BSA conjugation were achieved. Modified BSA revealed reduction of amino groups' availability and slower migration through SDS/PAGE. d-galactose was more reactive than d-glucose or d-lactose, leading to the coupling of 10, 3 and 1 sugar residues, respectively, after 120 minutes of reaction. BSA lysines (K) were the preferred modified amino acids; both K256 and K420 appeared the most available for conjugation. Only BSA-lactose showed biological recognition by specific lectins.
Źródło:
Acta Biochimica Polonica; 2008, 55, 3; 491-497
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Synteza i zastosowanie nowych katalizatorów metatezy olefin
Synthesis and application of new olefin metathesis catalysts
Autorzy:
Hryniewicka, A.
Powiązania:
https://bibliotekanauki.pl/articles/172521.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Chemiczne
Tematy:
metateza olefin
katalizatory rutenowe
pochodne chromanu
sole imidazolidyniowe
glikokoniugaty
olefin metathesis
ruthenium catalysts
chromane derivatives
imidazolinium salts
glycoconjugates
Opis:
Olefin metathesis has emerged as a powerful tool for the formation of carboncarbon double bonds. The success of this methodology has spurred the intense investigation of new catalysts showing a better application profile. The syntheses and the application profiles of the seven new ruthenium metathesis catalysts have been described. Five of them were modified in benzylidene part with 6-hydroxychromane- and 2H-3,4-chromenemethylidene moiety. In chromanol – α-tocopherol model compound, some specific stereoelectronic effects have been observed. Introduction of this ligand to the catalyst may provide new advantageous properties. The other new catalysts contained modified N-heterocyclic carbene ligand (NHC), in which N,N’-mesityl substituents of NHC system were linked with diethylene glycol chain as a “clamping ring”. This ring would contribute to a steric shield of the NHC and ruthenium coordination center. Probably it may inforce a proper orientation of substituents in metallacyclobutane (all-cis), leading to Z-olefin formation. The obtained catalysts were investigated in model reactions: ring closing metathesis, cross metathesis and enyne metathesis. The experiments proved they efficiency. In many reactions the catalysts showed activity comparable or superior to that of commercially available Grubbs and Hoveyda 2nd generation complexes. Stereochemistry Z/E of the cross-metathesis products obtained using new and known complexes were similar as well. The catalysts were applied in the synthesis of a new type of α-tocopherol glycoconjugates. An efficient method of the synthesis Hoveyda 2nd type complexes starting from ruthenium trichloride was developed. It is possible to circumvent using special laboratory equipment and expensive reagents. Hoveyda type complexes can be achieved with very good yield in gram scale. Keywords:
Źródło:
Wiadomości Chemiczne; 2014, 68, 11-12; 961-980
0043-5104
2300-0295
Pojawia się w:
Wiadomości Chemiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Aminokwasy, glikany, peptydy i białka w ścieżkach diagnostycznych i terapeutycznych chorób cywilizacyjnych XXI wieku : projektowanie i charakterystyka fizykochemiczna oraz strukturalna
Amino acids, glycans, peptides and proteins in the diagnostic and therapeutic pathways of the 21st century civilization diseases : design, physicochemical and structural characterisation
Autorzy:
Bylińska, Irena
Dzierżyńska, Maria
Giżyńska, Małgorzata
Guzow, Katarzyna
Jankowska, Elżbieta
Jurczak, Przemysław
Kaczyński, Zbigniew
Karska, Natalia
Kowalczyk, Agnieszka
Kuncewicz, Katarzyna
Orlikowska, Marta
Sawicka, Justyna
Spodzieja, Marta
Szpakowska, Nikola
Szymańska, Aneta
Wieczerzak, Ewa
Witkowska, Julia
Rodziewicz-Motowidło, Sylwia
Powiązania:
https://bibliotekanauki.pl/articles/2200549.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Chemiczne
Tematy:
fluorophores
fluorescence spectroscopy
antimicrobial activity
anticancer activity
Cystapep
Stahylococcus aureus
antimicrobial compounds
amyloidogenic protein
mutagenesis
fibrilization
proteasome
aging
neurodegeneration
self-assembling peptides
tissue engineering
biomaterials
immune checkpoints
peptide inhibitors
immunotherapy
ligands of TAP protein
viral diseases
NMR structure of the UL49.5 protein
glycans
glycoconjugates
fluorofory
spektroskopia fluorescencyjna
aktywność przeciwdrobnoustrojowa
aktywność antynowotworowa
Staphylococcus aureus
związki przeciwbakteryjne
białko amyloidogenne
mutageneza
fibrylizacja
proteasom
procesy starzeniowe
neurodegeneracja
peptydy samoorganizujące
inżynieria tkankowa
biomateriały
punkty kontrolne układu immunologicznego
inhibitory peptydowe
immunoterapia
ligandy białka TAP
choroby wirusowe,
struktura NMR białka UL49.5
glikany
glikokoniugaty
Opis:
The civilization diseases of the 21st century are non-infectious disorders, affecting a large part of modern society. They are associated with the significant development of industry and technology, and hence with environmental pollution and an unhealthy lifestyle. These factors have led to the development of many civilization diseases, which currently include: cardiovascular diseases, respiratory diseases, diabetes, obesity, malignant tumors, gastrointestinal diseases, mental disorders and allergic diseases. The development of technologies, including modern therapies and new drugs, resulted in increase in life expectancy. This creates a global problem of an aging population with an increasing number of diseases of the old age, i.e. dementias. In addition, sedentary lifestyles and changing diets are the reasons why more and more people develop metabolic diseases, as well as neurological and cognitive disorders characterized by progressive damage to nerve cells and dementia. Currently, problem on a global scale is also the growing resistance to existing antimicrobial drugs. Therefore, the scientists face many challenges related to searching for the causes of these diseases, their diagnosis and treatment. Scientific research conducted at the Department of Biomedical Chemistry at the Faculty of Chemistry of the University of Gdańsk is part of this research trend. In this publication, we discuss various research topics with the long-term aim of solving the problems associated with the diseases mentioned above. The following chapters are dedicated to (i) looking for new effective fluorophores with diagnostic and anti-cancer activity; (ii) designing of new compounds with antibacterial and antiviral activity and their synthesis; (iii) investigating the mechanisms of amyloid deposit formation by human cystatin C and possibilities of inhibition of this process; (iv) designing and studies of compounds activating the proteasome with the potential to suppress the development of neurodegenerative diseases; (v) designing peptide fibrils and hydrogels as drug carriers; (vi) searching for peptide inhibitors of immune checkpoint as potential drugs for immunotherapy; (vii) studying the mechanism of action of selected herpesviruses by determining the structure of viral proteins and (viii) studying the composition of natural glycans and glycoconjugates in order to better understand the mechanisms of interaction of bacteria with the environment or with the host.
Źródło:
Wiadomości Chemiczne; 2022, 76, 5-6; 393--431
0043-5104
2300-0295
Pojawia się w:
Wiadomości Chemiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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