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Wyszukujesz frazę "therapeutics" wg kryterium: Wszystkie pola


Wyświetlanie 1-9 z 9
Tytuł:
Organometallic iron complexes as potential cancer therapeutics
Autorzy:
Mojžišová, Gabriela
Mojžiš, Ján
Vašková, Janka
Powiązania:
https://bibliotekanauki.pl/articles/1039190.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
organometallic iron complexes
cytotoxic and antiproliferative effects
anticancer agents
Opis:
Metal-containing drugs have long been used for medicinal purposes in more or less empirical way. The potential of these anticancer agents has only been fully realised and explored since the discovery of the biological activity of cisplatin. Cisplatin and carboplatin have been two of the most successful anti-cancer agents ever developed, and are currently used to treat ovarian, lung and testicular cancers. They share certain side effects, so their clinical use is severely limited by dose-limiting toxicity. Inherent or acquired resistance is a second problem often associated with platinum-based drugs, with further limits of their clinical use. These problems have prompted chemists to employ different strategies in development of the new metal-based anticancer agents with different mechanisms of action. There are various metal complexes still under development and investigation for the future cancer treatment use. In the search for novel bio-organometallic molecules, iron containing anti-tumoral agents are enjoying an increasing interest and appear very promising as the potential drug candidates. Iron, as an essential cofactor in a number of enzymes and physiological processes, may be less toxic than non essential metals, such as platinum. Up to now, some of iron complexes have been tested as cytotoxic agents and found to be endowed with an antitumor activity in several in vitro tests (on cultured cancer cell lines) and few in vivo experiments (e. g. on Ehrlich's ascites carcinoma). Although the precise molecular mechanism is yet to be defined, a number of observations suggest that the reactive oxygen species can play important role in iron-induced cytotoxicty. This review covers some relevant examples of research on the novel iron complexes.
Źródło:
Acta Biochimica Polonica; 2014, 61, 4; 651-654
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Salmonella and cancer: from pathogens to therapeutics
Autorzy:
Chorobik, Paulina
Czaplicki, Dominik
Ossysek, Karolina
Bereta, Joanna
Powiązania:
https://bibliotekanauki.pl/articles/1039520.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
bacterial cancer therapy
immunotherapy
cancer vaccine
tumor targeting
Salmonella
VNP20009
Opis:
Bacterial cancer therapy is a concept more than 100 years old - yet, all things considered, it is still in early development. While the use of many passive therapeutics is hindered by the complexity of tumor biology, bacteria offer unique features that can overcome these limitations. Microbial metabolism, motility and sensitivity can lead to site-specific treatment, highly focused on the tumor and safe to other tissues. Activation of tumor-specific immunity is another important mechanism of such therapies. Several bacterial strains have been evaluated as cancer therapeutics so far, Salmonella Typhimurium being one of the most promising. S. Typhimurium and its derivatives have been used both as direct tumoricidal agents and as cancer vaccine vectors. VNP20009, an attenuated mutant of S. Typhimurium, shows significant native toxicity against murine tumors and was studied in a first-in-man phase I clinical trial for toxicity and anticancer activity. While proved to be safe in cancer patients, insufficient tumor colonization of VNP20009 was identified as a major limitation for further clinical development. Antibody-fragment-based targeting of cancer cells is one of the few approaches proposed to overcome this drawback.
Źródło:
Acta Biochimica Polonica; 2013, 60, 3; 285-297
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Activities of human telomerase in cancer development, detection and therapeutics - A Review
Autorzy:
Pal, Partha
Ray, Spandita
De (Dutta), Koly
Powiązania:
https://bibliotekanauki.pl/articles/1190141.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Chromosomes
End-replication
Telomere
Telomerase
Cancer
Therapeutic
Opis:
Telomeres are the specialized nucleoprotein structures associated with eukaryotic chromosomal ends, which are essential for maintaining the stability of the linear eukaryotic chromosomes. Progressive telomere shortening is an inevitable occurrence in normal somatic cells due to the end-replication problem leading to limited replication efficiency. The hallmark characteristics of human cancer cells include infinite reproductive potential, uncontrolled proliferation and immortality. These abilities of transformed cancerous cells are mainly due to the maintenance of their telomeres since degradation of chromosomal telomeric ends leads to cellular senescence or death. Thus telomere biology is important in the study of human cancer development. The mechanism by virtue the cancer cells are able to divide indefinitely is by maintaining telomeres. Activity of telomerase, a telomere-elongating ribonucleoprotein reverse transcriptase enzyme, is responsible for inducing the property of immortality to cancer cells. In humans nearly about 80% to 90% cancer cells activate telomerase and elongate their telomeres to overcome the end-replication problem. Telomere shortening suppresses cancer formation in contrast according to certain reports it sometimes promotes genomic instability which leads to enhancement of carcinogenesis and consequently the development of malignancy. Majority of cancer cells activate telomerase, but it remains mysterious as to find the reasons of the fact that certain cancer cells often show shorter telomeres in comparison to the cells in the surrounding normal tissues. This controversial role of telomerase associated with certain transformed cells leading to the cancerous state in relation to its role in normal cells is an interesting field to study which points out to the fact of development of cancer cells targeting drugs based on telomerase activities as an alternative weapon in combating against this dreaded human disease. The present review focuses on the activity of telomerase in telomere maintenance in the development of cancerous cells in humans, the use of telomerase as an assay technique for cancer detection as well as the anti-cancer therapeutic approach of targeting the telomerase in the current era of treatment of human cancer.
Źródło:
World Scientific News; 2016, 42; 87-100
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Physical possibilities in the treatment of chronic abdominal pain in patients with peritoneal adhesions
Autorzy:
Pasek, Jarosław
Senejko, Michał
Cieślar, Grzegorz
Powiązania:
https://bibliotekanauki.pl/articles/552394.pdf
Data publikacji:
2019
Wydawca:
Stowarzyszenie Przyjaciół Medycyny Rodzinnej i Lekarzy Rodzinnych
Tematy:
abdominal pain
magnetic fields
tissue adhesions
therapeutics.
Opis:
Background. The most intensive pains suffered by patients after surgical interventions are caused by post-operative peritoneal adhesions, which are incorrect connective tissue connections formed on or among internal organs and tissues in the abdominal cavity. These adhesion-related pains are resistant to analgesic treatment and often persist for many years. Objectives. In this trial, the estimation of the efficacy of combined treatment with the use of two variable magnetic field related therapeutic methods (magnetotherapy and magnetostimulation) in the treatment of 119 patients with chronic abdominal pains caused by numerous post-operative peritoneal adhesions was performed. Material and methods. 67 patients from the examined group were subjected to two series of 20 daily procedures of exposure to variable magnetic fields in the form of magnetotherapy and magnetostimulation, while 52 patients from the comparison group were subjected to sham exposure, during which no magnetic field was generated in the applicators. Prior to the therapeutic cycle and after its completion, the assessment of pain intensity, with the use of the Visual Analogue Scale (VAS ), and subjective estimation of quality of life, by means of the EuroQol Scale, were performed. Results. In patients from the examined group, a significant decrease in pain intensity, according to the VAS , and a significant improvement of life quality level, on the EuroQol Scale, in comparison to initial values, was achieved (8.0 ± 1.1 vs 2.3 ± 1.0 points, and 30.2 ± 14.1 vs 86.2 ± 8.5 points, respectively (p < 0.05); while in the control group, no statistically significant changes of the estimated parameters were observed. Conclusions. Magnetotherapy and magnetostimulation are efficient therapeutic methods in the case of patients with long-lasting abdominal pain related to peritoneal adhesions, enabling an improvement in their life quality (regardless of gender and age). Taking into account that magnetotherapy and magnetostimulation are not applicable in primary care, family doctors should consider a consultation with a physical therapy specialist in order to prescribe a cycle of physical treatment with the use of these methods in the case of such patients with drug-resistant abdominal pain caused by diagnosed postoperative peritoneal adhesions
Źródło:
Family Medicine & Primary Care Review; 2019, 2; 124-129
1734-3402
Pojawia się w:
Family Medicine & Primary Care Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The use of play activities working with the children having speech defects
Autorzy:
BAZALEY, Elena
Powiązania:
https://bibliotekanauki.pl/articles/457645.pdf
Data publikacji:
2014
Wydawca:
Uniwersytet Rzeszowski
Tematy:
play therapeutics
preschool children
colour perception
cognition
saturated colours
hues perception
correction-pedagogical work
Opis:
The article deals with the development of colour perception of pre-school children with vision defects. The play therapeutics method is very important and effective for such children.
Źródło:
Edukacja-Technika-Informatyka; 2014, 5, 1; 542-543
2080-9069
Pojawia się w:
Edukacja-Technika-Informatyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Indigenous curative plants used in curing of piles from Mahabubnagar District of Telangana State, India
Autorzy:
Singh, P. Shivakumar
Sureshkumar, M.
Vidyasagar, G. M.
Powiązania:
https://bibliotekanauki.pl/articles/1076551.pdf
Data publikacji:
2019
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Indigenous therapeutics
curative plants
piles therapeutic
Opis:
The existing report is rigorous on the ethnic knowledge of indigenous remedial medicinal plants curing in piles by pastoral people of Telangana, India. A total of 17 species were recorded as natural therapeutic plants treating in piles. Of individual’s species, representing 16 families. The extreme, herbs were in the information are measured. In the present results the importance of the indigenous remedial plants wisdom have been observed. Apart from efforts are ruined to educate the further generations about their importance, it may be missing in future. This diversity of information might contribute comprehensively in modern drug conniving or in government policies to advancement contemporary innovative drug design systems in rural, folkloric areas, and in the enhancement of advance formulas with reference to indigenous remedial medicinal plants.
Źródło:
World Scientific News; 2019, 115; 149-159
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cancer therapeutics strategy using nano-carrier mediated natural drugs
Autorzy:
Shaw, S.
Singh, P.
Mishra, R.
Singh, R.
Nayak, R.
Bose, S.
Powiązania:
https://bibliotekanauki.pl/articles/2201053.pdf
Data publikacji:
2022
Wydawca:
Stowarzyszenie Komputerowej Nauki o Materiałach i Inżynierii Powierzchni w Gliwicach
Tematy:
breast cancer
porous silicon nanocarrier
quercetin
nucleolin
targeted therapy
rak piersi
krzem porowaty
nanonośniki
kwercetyna
terapia celowana
Opis:
Purpose Nucleolin is a multifactorial protein, having a significant role in chromatin remodelling, mRNA stability, ribosome biogenesis, stemness, angiogenesis, etc., thus, it is potential therapeutic target in cancer. The purpose of this paper is to study porous silicon (pSi) nanocarrier-based natural drug delivery system targeting dysregulated nucleolin expression for cancer therapeutics. Design/methodology/approach Quercetin was loaded in pre-synthesized and characterized pSi nanoparticles, and release kinetics was studied. The study compared the inhibitory concentration (IC50) of quercetin, synthetic drug doxorubicin, and quercetin-loaded pSi nanoparticles. Further, mRNA expression of a target gene, nucleolin, was tested with a quercetin treated breast cancer cell line (MCF-7). Findings Quercetin-loaded pSi nanoparticles followed first-order release kinetics. IC50 was determined at concentrations of 312 nM, 160 µM, and 50 µM against doxorubicin, quercetin, and quercetin-loaded pSi nanoparticles, respectively. The results further indicated 16-fold downregulation of nucleolin mRNA expression after 48h of quercetin treatment of exponentially growing MCF-7 cells. Research limitations/implications Whether pSi nanoparticle loaded quercetin can significantly downregulate nucleolin protein expression and its impact on apoptosis, cell proliferation, and angiogenic pathways need further investigation. Practical implications The practical application of the proposed nanocarrier-based drug delivery system potentially lays out a path for developing targeted therapy against nucleolin-dysregulated cancer using natural products to minimize the side effects of conventional chemotherapeutic drugs. Originality/value Inhibition of nucleolin and nucleolin regulated pathways using natural compounds and its targeted delivery with nanocarrier is not yet done.
Źródło:
Journal of Achievements in Materials and Manufacturing Engineering; 2022, 114, 1; 32--41
1734-8412
Pojawia się w:
Journal of Achievements in Materials and Manufacturing Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Drug-induced thrombocytopenia – etiology and alternative therapeutic approaches
Autorzy:
Rajashekaraiah, Vani
Berikai Ananthakrishna, Anusha
Powiązania:
https://bibliotekanauki.pl/articles/29519508.pdf
Data publikacji:
2023-09-30
Wydawca:
Uniwersytet Rzeszowski. Wydawnictwo Uniwersytetu Rzeszowskiego
Tematy:
alternative therapeutics
drug-induced thrombocytopenia
phytochemicals
platelets
Opis:
Introduction and aim. The cumulative incidence of drug-induced thrombocytopenia (DIT) is 10 cases per one million people per year with a prevalence of approximately 25% in critically ill patients. This review provides a comprehensive view of drug-induced thrombocytopenia, diagnosis, underlying mechanisms, common strategies in therapeutics, and potential alternatives. Material and methods. Databases such as “Google Scholar”, “PubMed”, “Medline” and “MDPI” was used for literature review with the keywords, “platelets”, “platelet disorders”, “thrombocytopenia”, “drug-induced”, “oxidative stress” “plant extracts”, “phytochemicals”, “antioxidants”, for the articles published between 2013-2023 and written in the English language. Analysis of the literature. Several antimicrobials, anti-cancer drugs, and antivirals are often reported to cause adverse effects during treatment, such as thrombocytopenia. A thorough understanding of the underlying pathophysiology is important for appropriate treatment. Even though an improvement in platelet count is observed after the discontinuation of the causative drug, there is a dire need for treatment in some cases due to associated complications. There are various pitfalls with conventional treatments which include clinical complications and lack of effectiveness. Conclusion. Interventions in therapeutics through antioxidants can aid in faster recovery. Various plant extracts and phytochemicals have been employed as therapeutics in platelet disorders due to their exceptional antioxidant activity. It is imperative to explore the bioactive components of natural products and their influence on platelet efficacy. Also, it highlights how antioxidants can be used as a safe, yet effective option as therapeutics for treating a complicated disorder such as DIT or be used as supplements to prevent adverse effects of existing treatments involving antibiotics and chemotherapeutics.
Źródło:
European Journal of Clinical and Experimental Medicine; 2023, 3; 617-626
2544-2406
2544-1361
Pojawia się w:
European Journal of Clinical and Experimental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Rola wielonienasyconych kwasów tłuszczowych omega-3 w etiopatogenezie i leczeniu zaburzeń psychicznych
Role of omega-3 polyunsaturated fatty acids in the pathogenesis and treatment of mental disorders
Autorzy:
Pawełczyk, Tomasz
Kotlicka-Antczak, Magdalena
Dietrich-Muszalska, Anna
Grygo, Magdalena
Krawczyk, Kamila
Wolańczyk, Tomasz
Rybakowski, Janusz
Rabe-Jabłońska, Jolanta
Powiązania:
https://bibliotekanauki.pl/articles/945210.pdf
Data publikacji:
2010
Wydawca:
Medical Communications
Tematy:
aetiology
mood disorders
polyunsaturated fatty acids
schizophrenia
therapeutics
etiologia
schizofrenia
terapia
wielonienasycone kwasy tłuszczowe
zaburzenia nastroju
Opis:
Polyunsaturated fatty acids (PUFA), omega-3 are essential for normal development and function of the central nervous system. They are an essential structural component of neuronal cell membranes and are a source of biologically active substances, which perform complex functions, and participate in signal transmission within cells. Disorders of lipid metabolism and FFA are observed in the course of many disorders and mental illness, i.e. schizophrenia, bipolar disorder, attention-deficit/hyperactivity disorder, autism. Those disturbances are genetically based and contribute along with other abnormalities to increased vulnerability to particular disorder’s symptoms development. In addition, the diet of most residents of European countries does not provide enough omega-3 PUFAs, which are exogenous substances, i.e. not synthesized in sufficient quantities in the human body. Moreover, in the course of many mental disorders an excessive loss of long-chain PUFA through excitotoxicity processes and oxidative stress is observed, which further contributes to depletion of the available pool of PUFAs. In the case of schizophrenia, numerous experimental and clinical studies have led researchers to formulate hypotheses explaining the development of this disease based on the presence of lipid metabolism dysfunctions. The paper presents a review of recent literature and results of the original research conducted by the authors dealing with PUFAs metabolism disturbances in patients with mental disorders listed above.
Wielonienasycone kwasy tłuszczowe (WKT) omega-3 są niezbędne do prawidłowego rozwoju i funkcji ośrodkowego układu nerwowego. Stanowią istotny element strukturalny neuronalnych błon komórkowych oraz są źródłem aktywnych biologicznie substancji, które pełnią złożone funkcje sygnałowe oraz uczestniczą w przekazywaniu informacji wewnątrz komórek. Zaburzenia metabolizmu lipidów i WKT obserwuje się w przebiegu wielu zaburzeń i chorób psychicznych: schizofrenii, zaburzeń afektywnych, zespołu nadpobudliwości psychoruchowej z deficytem uwagi, autyzmu i innych. Dysfunkcje te mają podłoże genetyczne i wraz z innymi nieprawidłowościami przyczyniają się do zwiększenia podatności na wystąpienie objawów psychopatologicznych danego zaburzenia. Ponadto dieta mieszkańców większości krajów europejskich nie zapewnia wystarczającej ilości WKT omega-3, które należą do substancji egzogennych, tj. niesyntetyzowanych w wystarczającej ilości w organizmie ludzkim. Co więcej, w przebiegu wielu zaburzeń psychicznych dochodzi do nadmiernej utraty długołańcuchowych WKT za pośrednictwem procesów ekscytotoksyczności i stresu oksydacyjnego, co dalej przyczynia się do uszczuplenia dostępnej puli WKT. W przypadku schizofrenii liczne badania eksperymentalne i kliniczne doprowadziły badaczy do sformułowania hipotezy wyjaśniającej rozwój tej choroby w oparciu o występowanie dysfunkcji metabolizmu lipidów. W pracy przedstawiono przegląd aktualnego piśmiennictwa oraz wyniki oryginalnych badań przeprowadzonych przez autorów zajmujących się problematyką zaburzeń metabolizmu WKT u chorych z wymienionymi wyżej zaburzeniami psychicznymi.
Źródło:
Psychiatria i Psychologia Kliniczna; 2010, 10, 4; 288-297
1644-6313
2451-0645
Pojawia się w:
Psychiatria i Psychologia Kliniczna
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-9 z 9

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