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Wyszukujesz frazę "chloroquine" wg kryterium: Temat


Wyświetlanie 1-5 z 5
Tytuł:
Synthesis and structure of new modified derivatives based on the quinine molecule and their biological activity
Autorzy:
Mukusheva, Gulim
Zhasymbekova, Aigerym
Nurmaganbetov, Zhangeldy
Powiązania:
https://bibliotekanauki.pl/articles/2204140.pdf
Data publikacji:
2023
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
Quinine derivatives
antimalarial drug
chloroquine
hydroxychloroquine
Opis:
The relevance of the subject matter is conditioned by the constantly growing need to meet human needs in the field of medicine, in particular, the search, study, and further introduction of new types of medicines into practical use. The purpose of this study is to investigate the synthesis of modified quinine alkaloid derivatives, and their structure, to identify the properties and biological activity of antimalarial drugs based on quinine molecules, and to structure the general data of these substances. The leading approach is the analysis of the synthesis of quinine derivatives, their chemical and physical properties, and their ability to exert a medicinal effect. The abstracting method allows structuring alkaloid derivatives and establishing a general relationship between the structural configuration of molecules and their impact on human health in a number of related derivatives. The study identifies the main antimalarial drugs based on quinine molecules, including a comparative analysis of their effectiveness and overall biological activity.
Źródło:
Polish Journal of Chemical Technology; 2023, 25, 1; 28--34
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Detection of Plasmodium falciparum chloroquine resistance transporter (PfCRT) mutant gene amongst malaria-infected pregnant women in Calabar, Nigeria
Autorzy:
Monjol, Bernard Ekpan
Useh, Monday Francis
Powiązania:
https://bibliotekanauki.pl/articles/972121.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
malaria
chloroquine
artemisinin-based combination therapy
microscopy
PCR
PFCRT
Opis:
Chemotherapy is the mainstay in malaria control and management. For some time, chloroquine (CQ) was a drug of choice for the treatment of malaria. It was effective against all forms of malaria, cheap and readily available. The increased resistance of malaria parasites to CQ led to widespread abandonment of the drug in African and Asian countries on the prompting of the World Health Organization. Currently, artemisinin-based combination therapy is the gold standard for the treatment of malaria. This study investigates the presence of the Plasmodium falciparum Chloroquine Resistance Transporter (PfCRT) mutant gene, a molecular marker responsible for CQ resistance in malaria parasites. A total of 369 pregnant women were microscopically screened for malaria infection using thin and thick blood films stained with Giemsa. Subsequently, malaria parasite DNA was extracted from the blood of malaria positive participants. The PfCRT gene was amplified using Polymerase Chain Reaction (PCR). A Restriction Fragment Length Polymorphism analysis of the gene was performed to confirm mutant forms. The results showed that 251 (68.0%) of the participants had Plasmodium falciparum in their blood. Molecular examination revealed the presence of PfCRT mutant genes in 28% of the study population. Notwithstanding the decline in the prevalence of PfCRT T76 mutation since the antimalarial policy change in Nigeria, the 28% prevalence recorded in this study is considered high after ten years of the withdrawal of CQ in the treatment of uncomplicated malaria.
Źródło:
Annals of Parasitology; 2017, 63, 4; 323-330
0043-5163
Pojawia się w:
Annals of Parasitology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Psychiatric adverse effects of chloroquine
Psychiatryczne działania niepożądane chlorochiny
Autorzy:
Bogaczewicz, Anna
Sobów, Tomasz
Powiązania:
https://bibliotekanauki.pl/articles/941276.pdf
Data publikacji:
2017
Wydawca:
Medical Communications
Tematy:
adverse effects
antimalarial drugs
chloroquine
mental disorders
side effects
Opis:
Chloroquine is a prototype antimalarial drug, widely used in several branches of medicine. Antimalarial drugs are used in the treatment of various dermatological, immunological, rheumatological and infectious diseases. Examples of off-labelled indications for chloroquine analogues use include dermatomyositis, sarcoidosis, polymorphous light eruption, disseminated granuloma annulare and porfiria cutanea tarda. There is a relatively small number of adverse effects related to chloroquine analogues used in standard doses, such as gastrointestinal disturbances, headaches, skin reactions, hypotension, convulsions, extrapyramidal symptoms and visual disturbances. Psychiatric side effects of chloroquine seem to be rare, but may manifest in a wide range of symptoms, such as confusion, disorientation, ideas of persecution, agitation, outbursts of violence, loss of interest, feeling sad, suicidal ideas and impaired insight. There is also a report of a manic episode with psychotic features in the course of bipolar disorder, and another case report of persecutory delusions, anxiety, derealisation and visual illusions triggered by chloroquine. The duration of psychiatric symptoms usually ranges from one to two weeks, and symptoms usually disappear within several days following cessation of chloroquine usage and starting psychiatric treatment where indicated. This article reviews the case studies of patients diagnosed with mental disorders resulting from the use of chloroquine, and discusses the management in such cases.
Chlorochina jest prototypowym lekiem przeciwmalarycznym, szeroko stosowanym w kilku gałęziach medycyny. Leki przeciwmalaryczne wykorzystuje się w leczeniu różnych chorób dermatologicznych, immunologicznych, reumatologicznych i chorób zakaźnych. Przykłady pozarejestracyjnych wskazań użycia analogów chlorochiny obejmują zapalenie skórno- -mięśniowe, sarkoidozę, wielopostaciowe osutki świetlne, rozsiany ziarniniak obrączkowaty i porfirię skórną późną. W standardowych dawkach chlorochina powoduje stosunkowo niewielką liczbę działań niepożądanych, takich jak zaburzenia żołądkowo-jelitowe, bóle głowy, reakcje skórne, obniżone ciśnienie, drgawki, objawy pozapiramidowe i zaburzenia widzenia. Wydaje się, iż psychiatryczne objawy niepożądane chlorochiny występują rzadko, ale w szerokim zakresie możliwości – od splątania, dezorientacji, urojeń prześladowczych, pobudzenia i zachowań agresywnych po utratę zainteresowań, uczucie smutku, myśli samobójcze oraz zaburzenie wglądu. Istnieje również doniesienie, w którym opisuje się epizod manii z cechami psychotycznymi w przebiegu choroby afektywnej dwubiegunowej, a także opis przypadku z urojeniami prześladowczymi, niepokojem, derealizacją i iluzjami wzrokowymi wywołanymi zastosowaniem chlorochiny. Czas trwania objawów psychiatrycznych zazwyczaj zawiera się w przedziale od jednego do dwóch tygodni, a objawy zazwyczaj ustępują w ciągu kilku dni po zaprzestaniu przyjmowania chlorochiny oraz po włączeniu leczenia psychiatrycznego, jeżeli istnieją do tego wskazania. W artykule przedstawiono opisy przypadków pacjentów z rozpoznaniem zaburzeń psychicznych wynikających z zastosowania chlorochiny, a także przedstawiono zastosowane postępowanie w takich przypadkach.
Źródło:
Psychiatria i Psychologia Kliniczna; 2017, 17, 2; 111-114
1644-6313
2451-0645
Pojawia się w:
Psychiatria i Psychologia Kliniczna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of liver antioxidant status and mitochondrial membrane composition of Plasmodium berghei-infected mice treated with selected antimalarials
Autorzy:
Adisa, Rahmat
Sulaimon, Lateef
Powiązania:
https://bibliotekanauki.pl/articles/1038594.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
Plasmodium berghei
Artecxin
Lonart
P-Alaxin
Chloroquine
oxidative stress
mitochondrial membrane fluidity
Opis:
The present study was aimed at determining and comparing the effects of Artecxin (ART), P - Alaxin (P-ALA), Lonart (LON) and Chloroquine (CQ) on oxidative stress parameters and mitochondrial membrane composition in the course of malaria infection. Six groups of five mice each categorized as healthy control (non-parasitized non-treated group), parasitized-non-treated (PnT), parasitized-chloroquine-treated (positive control), parasitized-Artecxin, -Lonart and -P-Alaxin-treated groups were used for the study. Hepatic antioxidant status was assessed with levels of malondialdehyde (MDA) and reduced glutathione (GSH) as well as activity of superoxide dismutase (SOD) and catalase (CAT) in the post mitochondrial and mitochondrial fractions. Mitochondrial membrane integrity was also evaluated with activity of succinate dehydrogenase and levels of phospholipids, cholesterol and proteins in the liver mitochondria. Results revealed that treatment of parasitized mice with the antimalarial drugs significantly (p<0.05) decreased hepatic malondialdehyde (MDA) and mitochondrial membrane phospholipids compared to parasitized untreated group. On the other hand, significantly (p<0.05) elevated succinate dehydrogenase (SDH) activity, mitochondrial membrane cholesterol level, GSH concentration, catalase (CAT) and superoxide dismutase (SOD) activity in the post mitochondrial fraction were obtained. Thus, antimalarial drugs distort mitochondrial membrane integrity and electron transfer but reduce the malaria-induced oxidative stress on the host.
Źródło:
Acta Biochimica Polonica; 2017, 64, 3; 485-491
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Polymorphisms of the Pfatpase 6 and Pfcrt gene and their relationship with the in vitro susceptibility to dihydroartemisinin and chloroquine of Plasmodium falciparum isolates from Abobo, Cote d’Ivoire
Autorzy:
Bla, B.K.
Yavo, W.
Trebissou, J.
Kipre, R.G.
Yapi, F.H.
N'guessan, J.D.
Djaman, J.A.
Powiązania:
https://bibliotekanauki.pl/articles/5840.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
polymorphism
Pfatpase 6
Pfcrt gene
relationship
in vitro
susceptibility
dihydroartemisinin
malaria
chloroquine
Plasmodium falciparum
isolate
drug resistance
Abobo commune
Cote d’Ivoire
Opis:
As a result of widespread resistance to chloroquine (CQ) and sulphadoxine-pyrimethamine (SP), artemisinin-based combination therapy (ACT) has been recommended as a first-line anti-malarial regimen in Côte d’Ivoire since 2005. A thorough understanding of the molecular bases of P. falciparum resistance to existing drugs is therefore needed. The aims of this study were to analyze the in vitro sensitivity of P. falciparum field isolates from Abobo to CQ, pyronaridine (PYR) and dihydroartemisinine (DHA), and to investigate the polymorphisms associated with drug resistance. The standard in vitro drug sensitivity microtechnique recommended by the WHO was used to assess the sensitivity of Plasmodium falciparum isolates collected in December 2006. The Pfcrt haplotype 76 was analysed by PCR-RFLP while Pfatpase 6 amplification products were sequenced. Associations between drug sensitivity and parasite gene polymorphisms were evaluated with Cohen’s kappa test. The correlation between the IC50 values for different drugs was assessed by the coefficient of determination (r2). Significance was assumed at p<0.05. Of 128 in vitro tests performed, 112 (87.5%) were successful. Of the isolates, 56.2% were resistant for CQ and 48% for PYR. One isolate (3.6%) demonstrated reduced DHA sensitivity (IC50 higher than 10 nM). The mutant K76T pfcrt codon, present in 90% of DNA fragments analyzed, was associated with CQ-R (ĸ=0.76). The N669Y (16.1%), D734Y (28.6%) and D734H (1.8%) isolates were found to have mutant Pfatpase6, however, these mutations were not associated with diminished DHA sensitivity (k=0.01). These high levels of antimalarial drug resistance in Abobo (Côte d’Ivoire) demand further studies of drug efficacy across the whole country.
Źródło:
Annals of Parasitology; 2014, 60, 4
0043-5163
Pojawia się w:
Annals of Parasitology
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-5 z 5

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