Alisertib (MLN8237), a novel Aurora A kinase inhibitor, is currently being clinically tested in late-phase trials for the therapy of various malignancies. In the present work, we describe alisertib's potential to perpetrate pharmacokinetic drug-drug interactions (DDIs) and/or to act as an antagonist of multidrug resistance (MDR). In accumulation assays, alisertib potently inhibited ABCC1 transporter, but not ABCB1 or ABCG2. The results of molecular modeling suggested a bifunctional mechanism for interaction on ABCC1. In addition, alisertib was characterized as a low- to moderate-affinity inhibitor of recombinant CYP3A4, CYP2C8, CYP2C9, CYP2C19, and CYP2D6 isoenzymes, but without potential clinical relevance. Drug combination studies revealed the capability of alisertib to synergistically antagonize ABCC1-mediated resistance to daunorubicin. Although alisertib exhibited substrate characteristics toward ABCB1 transporter in monolayer transport assays, comparative proliferation studies showed lack of its MDR-victim behavior in cells overexpressing ABCB1 as well as ABCG2 and ABCC1. Lastly, alisertib did not affect the expression of ABCC1, ABCG2, ABCB1 transporters and CYP1A2, CYP3A4, CYP2B6 isozymes on mRNA level in various systemic and tumoral models. In conclusion, our study suggests that alisertib is a drug candidate with negligible potential for perpetrating systemic pharmacokinetic DDIs on ABCB1, ABCG2 and cytochromes P450. In addition, we introduce alisertib as an effective dual-activity chemosensitizer whose MDR-antagonistic capacities are not impaired by efflux or effect on MDR phenotype. Our in vitro findings provide important pieces of information for clinicians when introducing alisertib into the clinical area.
- MeSH
- ABC transportér z rodiny G, člen 2 genetika metabolismus MeSH
- azepiny farmakokinetika farmakologie MeSH
- buněčné linie MeSH
- katalytická doména MeSH
- konformace proteinů MeSH
- lékové interakce MeSH
- lidé MeSH
- molekulární modely MeSH
- P-glykoprotein genetika metabolismus MeSH
- proteiny spojené s mnohočetnou rezistencí k lékům antagonisté a inhibitory MeSH
- psi MeSH
- pyrimidiny farmakokinetika farmakologie MeSH
- regulace genové exprese účinky léků MeSH
- simulace molekulového dockingu MeSH
- systém (enzymů) cytochromů P-450 metabolismus MeSH
- vztah mezi dávkou a účinkem léčiva MeSH
- zvířata MeSH
- Check Tag
- lidé MeSH
- psi MeSH
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
Dabrafenib is a BRAF inhibitor used in combination treatment of malignant melanoma and non-small cell lung carcinoma. In this study, we aimed to characterize its interactions with cytochrome P450 (CYP) isoenzymes and ATP-binding cassette (ABC) efflux transporters that have critical impact on the pharmacokinetics of drugs and play a role in drug resistance development. Using accumulation assays, we showed that dabrafenib inhibited ABCG2 and, less potently, ABCB1 transporter. We also confirmed dabrafenib as a CYP2C8, CYP2C9, CYP3A4, and CYP3A5 inhibitor. Importantly, inhibition of ABCG2 and CYP3A4 by dabrafenib led to the potentiation of cytotoxic effects of mitoxantrone and docetaxel toward respective resistant cell lines in drug combination studies. On the contrary, the synergistic effect was not consistently observed in ABCB1-expressing models. We further demonstrated that mRNA levels of ABCB1, ABCG2, ABCC1, and CYP3A4 were increased after 24 h and 48 h exposure to dabrafenib. Overall, our data confirm dabrafenib as a drug frequently and potently interacting with ABC transporters and CYP isoenzymes. This feature should be addressed with caution when administering dabrafenib to patients with polypharmacy but also could be utilized advantageously when designing new dabrafenib-containing drug combinations to improve the therapeutic outcome in drug-resistant cancer.
- MeSH
- ABC transportér z rodiny G, člen 2 antagonisté a inhibitory genetika metabolismus MeSH
- antitumorózní látky aplikace a dávkování farmakologie MeSH
- buňky MDCK MeSH
- cytochrom P-450 CYP3A genetika metabolismus MeSH
- daunomycin aplikace a dávkování farmakologie MeSH
- imidazoly aplikace a dávkování farmakokinetika MeSH
- inhibitory cytochromu P450 aplikace a dávkování farmakologie MeSH
- kombinovaná farmakoterapie MeSH
- lidé MeSH
- messenger RNA genetika metabolismus MeSH
- mitoxantron aplikace a dávkování farmakologie MeSH
- nádorové buněčné linie MeSH
- oximy aplikace a dávkování farmakokinetika MeSH
- P-glykoprotein antagonisté a inhibitory genetika metabolismus MeSH
- psi MeSH
- regulace genové exprese účinky léků MeSH
- zvířata MeSH
- Check Tag
- lidé MeSH
- psi MeSH
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
Téměř každé léčivo může interagovat s dalšími léčivy, doplňky stravy, potravinami nebo návykovými látkami. Léková interakce ve smyslu léčivo–léčivo nastává, pokud jeden lék mění účinky druhého. Výsledkem jejich vzájemného působení je většinou snížení nebo zvýšení účinku. Pacient je v prvním případě ohrožen neúčinností terapie, ve druhém případě zase vystupňovanými nežádoucími účinky, které mohou vést k hospitalizaci nebo k jejímu prodloužení, což následně vede k vyšší ekonomické zátěži zdravotnického systému. Antidepresiva jsou léky, které pacienti užívají často dlouhodobě, mnohdy celoživotně. Hlubší znalosti v oblasti jejich lékových interakcí mohou vést ke zvýšení bezpečnosti lékových režimů našich pacientů a současně k ekonomickým úsporám. Pro správnou interpretaci klinické významnosti lékových interakcí jsou potřebné solidní znalosti farmakokinetiky (zejména informace o způsobu metabolizace léčiva) i farmakodynamiky léčiv (oblast mechanismu účinku a rizik, jež léčivo přináší). Optimální je mít také základní přehled o silných induktorech a inhibitorech cytochromu P450 (hlavních enzymů první fáze biotransformace) a také mít povědomí o tom, které jeho izoformy podléhají genetickému polymorfismu. Tento článek přináší základní teoretický přehled problematiky lékových interakcí antidepresiv. Ten je navíc doplněn o pohled z praxe klinického farmaceuta, a to formou dvou kazuistik, jejichž ústředním tématem jsou právě lékové interakce antidepresiv.
Almost any drug can interact with other medications, dietary supplements, foods, or illicit substances when administered to a patient. A drug interaction occurs when one drug modifies the effects of another drug. The result is usually a reduction or enhancement of their effect. In the first case, the patient is endangered by the ineffectiveness of the therapy, in the second case by exacerbated side effects, which may lead to hospitalisation or prolongation of hospitalisation stay, leading to a higher economic burden on the health care system. Antidepressants are drugs that patients often take for a long time. Profound knowledge of drug interactions can lead to increased safety of our patients' drug regimens and, at the same time, to economic savings. To correctly interpret the clinical significance of drug interaction, a solid knowledge of pharmacokinetics and pharmacodynamics of the drug is required. The theoretical overview of the antidepressants drug interactions topic, which is presented in this article, is supplemented by a practical point of view of a clinical pharmacist in the form of two case reports.
- MeSH
- antidepresiva * farmakokinetika farmakologie terapeutické užití MeSH
- dospělí MeSH
- fluoxetin farmakokinetika škodlivé účinky terapeutické užití MeSH
- INR MeSH
- lékové interakce * MeSH
- lidé MeSH
- mladý dospělý MeSH
- P-glykoprotein genetika účinky léků MeSH
- polymorfismus genetický MeSH
- systém (enzymů) cytochromů P-450 účinky léků MeSH
- trazodon farmakokinetika škodlivé účinky terapeutické užití MeSH
- tremor chemicky indukované etiologie MeSH
- výsledek terapie MeSH
- warfarin farmakokinetika škodlivé účinky terapeutické užití MeSH
- Check Tag
- dospělí MeSH
- lidé MeSH
- mladý dospělý MeSH
- ženské pohlaví MeSH
- Publikační typ
- kazuistiky MeSH
- MeSH
- alkoholismus komplikace MeSH
- antidepresiva škodlivé účinky terapeutické užití MeSH
- bupropion * terapeutické užití MeSH
- cytochrom P-450 CYP2D6 fyziologie MeSH
- inhibitory cytochromu P450 CYP2D6 farmakokinetika MeSH
- Korsakovův syndrom diagnóza etiologie MeSH
- lidé středního věku MeSH
- lidé MeSH
- nauzea chemicky indukované MeSH
- P-glykoprotein fyziologie genetika MeSH
- polymorfismus genetický MeSH
- venlafaxin hydrochlorid * farmakokinetika otrava MeSH
- výsledek terapie MeSH
- Wernickeova encefalopatie diagnóza etiologie MeSH
- Check Tag
- lidé středního věku MeSH
- lidé MeSH
- mužské pohlaví MeSH
- Publikační typ
- kazuistiky MeSH
INTRODUCTION AND OBJECTIVE: Cytochrome P450 enzymes are the major drug-metabolizing enzymes in humans and the importance of drug transport proteins, in particular P-glycoprotein, in the variability of drug response has also been highlighted. Activity of cytochrome P450 enzymes and P-glycoprotein can vary widely between individuals and genotyping and/or phenotyping can help assess their activity. Several phenotyping cocktails have been developed. The Geneva cocktail is composed of a specific probe for six different cytochrome P450 enzymes and one for P-glycoprotein and was used in the context of a research aiming at exploring genotypes and phenotypes in distinct human populations (NCT02789527). The aim of the present study is to solely report the safety results of the Geneva cocktail in the healthy volunteers of these populations.MATERIALS AND METHODS: The Geneva cocktail is composed of caffeine, bupropion, flurbiprofen, omeprazole, dextromethorphan, midazolam, and fexofenadine. The volunteers fasted and avoided drinking caffeine-containing beverages or food and grapefruit juice overnight before receiving the cocktail orally. They provided blood spots for the probes' concentrations at 2, 3, and 6 h after ingestion and were asked about adverse events. RESULTS: A total of 265 healthy adult volunteers were included from Ethiopia, Oman, and the Czech Republic. The mean plasma concentrations at the 2-h sampling time of each probe drug in the total sample were: 1663 ng/mL for caffeine, 8 ng/mL for bupropion, 789 ng/mL for flurbiprofen, 6 ng/mL for dextromethorphan, 2 ng/mL for midazolam, 35 ng/mL for fexofenadine, and 103 ng/mL for omeprazole. Four adverse events were observed representing an occurrence of 1.5%. All these events were categorized as mild to moderate, non-serious, and resolved spontaneously. A causal link with the cocktail cannot be excluded because of the temporal relationship but is at most evaluated as possible according to the World Health Organization-Uppsala Monitoring Centre causal assessment system. CONCLUSIONS: In this research, healthy volunteers from three different human populations were phenotyped with the Geneva cocktail. Four adverse events were observed, confirming the safety of this cocktail that is given at lower than clinically relevant doses and therefore results in concentrations lower than those reported to cause adverse events.
- MeSH
- dospělí MeSH
- fixní kombinace léků MeSH
- genotyp MeSH
- inhibitory cytochromu P450 MeSH
- léčivé přípravky metabolismus MeSH
- lidé MeSH
- mladiství MeSH
- mladý dospělý MeSH
- P-glykoprotein genetika metabolismus MeSH
- regulace genové exprese účinky léků MeSH
- substrátová specifita MeSH
- systém (enzymů) cytochromů P-450 genetika metabolismus MeSH
- zdraví dobrovolníci pro lékařské studie MeSH
- Check Tag
- dospělí MeSH
- lidé MeSH
- mladiství MeSH
- mladý dospělý MeSH
- mužské pohlaví MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
- klinické zkoušky MeSH
- práce podpořená grantem MeSH
- Geografické názvy
- Česká republika MeSH
- Etiopie MeSH
- Omán MeSH
The Pregnane X (PXR), Vitamin D (VDR) and Farnesoid X (FXR) nuclear receptors have been shown to be receptors of bile acids controlling their detoxification or synthesis. Chenodeoxycholic (CDCA) and lithocholic (LCA) acids are ligands of FXR and VDR, respectively, whereas 3-keto and acetylated derivates of LCA have been described as ligands for all three receptors. In this study, we hypothesized that oxidation or acetylation at position 3, 7 and 12 of bile acids DCA (deoxycholic acid), LCA, CA (cholic acid), and CDCA by detoxification enzymes or microbiome may have an effect on the interactions with bile acid nuclear receptors. We employed reporter gene assays in HepG2 cells, the TR-FRET assay with recombinant PXR and RT-PCR to study the effects of acetylated and keto bile acids on the nuclear receptors activation and their target gene expression in differentiated hepatic HepaRG cells. We demonstrate that the DCA 3,12-diacetate and CA 3,7,12-triacetate derivatives are ligands of PXR and DCA 3,12-diacetate induces PXR target genes such as CYP3A4, CYP2B6 and ABCB1/MDR1. In conclusion, we found that acetylated DCA and CA are potent ligands of PXR. Whether the acetylated bile acid derivatives are novel endogenous ligands of PXR with detoxification or physiological functions should be further studied in ongoing experiments.
- MeSH
- acetylace MeSH
- buněčné kultury MeSH
- buňky Hep G2 MeSH
- cytochrom P-450 CYP3A genetika MeSH
- cytochrom P450 CYP2B6 genetika MeSH
- hepatocyty účinky léků enzymologie metabolismus MeSH
- kyselina cholová chemie metabolismus farmakologie MeSH
- kyselina deoxycholová chemie metabolismus farmakologie MeSH
- lidé MeSH
- ligandy MeSH
- myši MeSH
- oxidace-redukce MeSH
- P-glykoprotein genetika MeSH
- plazmidy MeSH
- receptory cytoplazmatické a nukleární chemie genetika metabolismus MeSH
- receptory kalcitriolu chemie genetika metabolismus MeSH
- reportérové geny MeSH
- simulace molekulového dockingu MeSH
- steroidní receptory chemie genetika metabolismus MeSH
- techniky dvojhybridového systému MeSH
- transfekce MeSH
- vazba proteinů MeSH
- vztah mezi dávkou a účinkem léčiva MeSH
- zvířata MeSH
- Check Tag
- lidé MeSH
- myši MeSH
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
Moderate neonatal jaundice is the most common clinical condition during newborn life. However, a combination of factors may result in acute hyperbilirubinemia, placing infants at risk of developing bilirubin encephalopathy and death by kernicterus. While most risk factors are known, the mechanisms acting to reduce susceptibility to bilirubin neurotoxicity remain unclear. The presence of modifier genes modulating the risk of developing bilirubin-induced brain damage is increasingly being recognised. The Abcb1 and Abcc1 members of the ABC family of transporters have been suggested to have an active role in exporting unconjugated bilirubin from the central nervous system into plasma. However, their role in reducing the risk of developing neurological damage and death during neonatal development is still unknown.To this end, we mated Abcb1a/b-/- and Abcc1-/- strains with Ugt1-/- mice, which develop severe neonatal hyperbilirubinemia. While about 60% of Ugt1-/- mice survived after temporary phototherapy, all Abcb1a/b-/-/Ugt1-/- mice died before postnatal day 21, showing higher cerebellar levels of unconjugated bilirubin. Interestingly, Abcc1 role appeared to be less important.In the cerebellum of Ugt1-/- mice, hyperbilirubinemia induced the expression of Car and Pxr nuclear receptors, known regulators of genes involved in the genotoxic response.We demonstrated a critical role of Abcb1 in protecting the cerebellum from bilirubin toxicity during neonatal development, the most clinically relevant phase for human babies, providing further understanding of the mechanisms regulating bilirubin neurotoxicity in vivo. Pharmacological treatments aimed to increase Abcb1 and Abcc1 expression, could represent a therapeutic option to reduce the risk of bilirubin neurotoxicity.
- MeSH
- bilirubin toxicita MeSH
- glukuronosyltransferasa fyziologie MeSH
- lidé MeSH
- modely nemocí na zvířatech * MeSH
- mozeček účinky léků patologie MeSH
- myši knockoutované MeSH
- myši MeSH
- neurotoxické syndromy etiologie metabolismus patologie MeSH
- novorozená zvířata MeSH
- novorozenecká hyperbilirubinemie komplikace metabolismus patologie MeSH
- P-glykoprotein genetika metabolismus MeSH
- proteiny spojené s mnohočetnou rezistencí k lékům genetika metabolismus MeSH
- viabilita buněk MeSH
- zvířata MeSH
- Check Tag
- lidé MeSH
- mužské pohlaví MeSH
- myši MeSH
- ženské pohlaví MeSH
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
Water-soluble N-(2-hydroxypropyl)methacrylamide copolymer conjugates bearing the anticancer drugs doxorubicin (Dox) or pirarubicin (THP), P-gp inhibitors derived from reversin 121 (REV) or ritonavir (RIT)), or both anticancer drug and P-gp inhibitor were designed and synthesized. All biologically active molecules were attached to the polymer carrier via pH-sensitive spacer enabling controlled release in mild acidic environment modeling endosomes and lysosomes of tumor cells. The cytotoxicity of the conjugates against three sensitive and Dox-resistant neuroblastoma (NB) cell lines, applied alone or in combination, was studied in vitro. All conjugates containing THP displayed higher cytotoxicity against all three Dox-resistant NB cell lines compared with the corresponding Dox-containing conjugates. Furthermore, the cytotoxicity of conjugates containing both drug and P-gp inhibitor was up to 10 times higher than that of the conjugate containing only drug. In general, the polymer-drug conjugates showed higher cytotoxicity when conjugates containing inhibitors were added 8 or 16h prior to treatment compared with conjugates bearing both the inhibitor and the drug. The difference in cytotoxicity was more pronounced at the 16-h time point. Moreover, higher inhibitor:drug ratios resulted in higher cytotoxicity. The cytotoxicity of the polymer-drug used in combination with polymer P-gp inhibitor was up to 84 times higher than that of the polymer-drug alone.
- MeSH
- antibiotika antitumorózní aplikace a dávkování chemie farmakologie MeSH
- chemorezistence účinky léků MeSH
- doxorubicin aplikace a dávkování analogy a deriváty chemie farmakologie MeSH
- lidé MeSH
- methakryláty aplikace a dávkování chemie MeSH
- mnohočetná léková rezistence účinky léků MeSH
- nádorové buněčné linie MeSH
- neuroblastom genetika metabolismus MeSH
- oligopeptidy aplikace a dávkování chemie farmakologie MeSH
- P-glykoprotein antagonisté a inhibitory genetika metabolismus MeSH
- ritonavir aplikace a dávkování chemie farmakologie MeSH
- uvolňování léčiv MeSH
- viabilita buněk účinky léků MeSH
- Check Tag
- lidé MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
BACKGROUND: P-glycoprotein (P-gp/MDR1), a member of the ATP-binding cassette (ABC) transporters super family, encoded by the ABCB1/MDR1 gene, is one of suggested respiratory tract protection components, found in various tissues with a barrier function, such as tracheobronchial epithelium and lung parenchyma. As an ATP-dependent pump, P-gp extrudes lipophilic particles out of cells and acts as a gatekeeper against numerous xenobiotics, with a protective role in mediating DNA damage, secretion of toxic compounds, apoptosis and the immune response. Therefore, a presence of MDR1 polymorphisms and altered P-gp expression may be important for pathogenesis of reduced lung inflammatory response on cigarette smoke exposure, as well as for the severity of chronic obstructive pulmonary disease and lung cancer pathogenesis and treatment efficacy. METHODS AND RESULTS: We have analyzed data available from experimental and clinical studies performed to establish the role of MDR1 polymorphisms, especially the 3435C>T variation, and P-gp expression in pathogenesis and clinical outcome of human respiratory diseases. CONCLUSIONS: Although there are indications that altered expression of P-gp and/or polymorphisms of MDR1 gene play an important role in respiratory diseases pathogenesis and treatment, their exact role and relevance are insufficiently investigated, with exception of certain chemotherapeutic agents' efficacy in lung cancer treatment. Further research in this field, including bigger series of patients, is necessary for better understanding of respiratory diseases' pathogenesis and treatment.
- MeSH
- DNA genetika MeSH
- genetická predispozice k nemoci * MeSH
- lidé MeSH
- nemoci dýchací soustavy genetika metabolismus MeSH
- P-glykoprotein biosyntéza genetika MeSH
- P-glykoproteiny genetika metabolismus MeSH
- polymorfismus genetický * MeSH
- regulace genové exprese * MeSH
- Check Tag
- lidé MeSH
- Publikační typ
- časopisecké články MeSH
- přehledy MeSH
Cíl studie: Cílem této práce je stanovení proteinů rezistence Pgp (P-glykoprotein) , MRP1 (Multidrug Related Protein, Multidrug Resistance – Associated Protein) a MRP3 a zjištění jejich prognostického významu u ovariálního karcinomu. Typ studie: Prospektivní klinická studie. Název a sídlo pracoviště: Porodnická a gynekologická klinika LF UK a FN Hradec Králové. Metodika: Stanovení proteinů rezistence (Pgp, MRP1, MRP3) jsme provedli u 133 vzorků ovariálních karcinomů u pacientek operovaných na Porodnické a gynekologické klinice FN Hradec Králové v letech 2006–2013. Proteiny rezistence jsme stanovili metodou dvoustupňové imunohistochemie. Výsledky: Pgp, MRP1 a MRP3 vykazovaly výrazné rozdíly hodnot v závislosti na histologickém typu ovariálního karcinomu. Nejnižší hodnoty Pgp a MRP1 jsme zjistili u endometroidního ovariálního karcinomu (p = 0,151, p = 0,013). Stupeň diferenciace významně ovlivnil pouze hodnoty MRP1, které narůstaly směrem od dobře diferencovaného ke špatně diferencovanému karcinomu ovaria (G1 80 % (CI 0–100), G2 80 % (CI 30–100), G3 100 % (CI 90–100), p < 0,001). Zaznamenán byl nárůst MRP1 od časných stadií (I+II) k pokročilému onemocnění (III+IV) (I+II 80 % (CI 60–100), III+IV 100 % (CI 90–100), p = 0,100). Peroperační velikost nádoru ani velikost nádorového rezidua po primární operaci nevykazovaly vztah s žádným z námi sledovaných proteinů rezistence. Pacientky s kompletní odpovědí na primární léčbu měly nižší hodnoty MRP1 v porovnání s ostatními pacientkami. Pacientky s vyššími hodnotami Pgp, MRP1, MRP3 měly také vyšší riziko recidivy. Jako statisticky významné faktory mající vliv na délku přežití byly v univariantní analýze zjištěny: FIGO stadium (p < 0,001), histologický typ nádoru (p < 0,001), přítomnost reziduálního tumoru (p < 0,001), exprese Pgp (p = 0,040), exprese MRP1 (p = 0,026). Závěr: Prokázali jsme prognostický význam stanovení Pgp, MRP1 a MRP3 u pacientek s karcinomem ovaria. MRP1 je z proteinů rezistence nejperspektivnější prognostický faktor u pacientek s karcinomem ovaria.
Objective: To evaluate the correlation of resistance proteins Pgp (P-glycoprotein), MRP1 (Multidrug Related Protein, Multidrug Resistance–Associated Protein) and MRP3 with clinical – pathological factors and to find the clinical outcome of these data in ovarian cancer patients. Design: Prospective study. Setting: Department of Gynecology and Obstetrics, Charles University in Prague, Faculty of Medicine in Hradec Králové, University Hospital Hradec Králové. Methods: 133 patients with epithelial ovarian cancer who underwent primary surgery from 2006–2010 had specimens stained with imunohistochemistry for Pgp, MRP1, MRP3. Results: The histological subtype of epithelial ovarian cancer correlated with the expression of PgP, MRP1, and MRP3. The lowest incidence of Pgp and MRP1 expression was documented in endometrioid ovarian cancers (P = 0.151, P = 0.013). Patients with advanced ovarian cancer (FIGO III+IV) had higher MRP1 expression than those with early stage ovarian cancer (Med MRP1 FIGO I+II 80%; CI: 60–100; FIGO III+IV 100%; CI: 90–100; P = 0.100). An association was observed between MRP1 and tumor grade (Med MRP1 G1 80% (CI: 0–100), G2 80% (CI: 30–100), G3 100% (CI: 90–100); P < 0.001). There was no relationship between the size of the residual tumor after primary surgery and any resistance proteins. Patients with complete response after primary treatment had lower levels of LRP, Pgp, and MRP1 expression than other patients. Patients with higher Pgp and MRP1 expression had relapse of disease during the following 24 months more often than patients with lower Pgp and MRP1 expression. FIGO stage, histological type, debulking efficiency, and Pgp and MRP1 expression correlated with poor patient survival (P < 0.001, P < 0.001, P < 0.001, P = 0.040, P = 0.026). Conclusion: We found prognostic significance of Pgp, MRP1 and MRP3 expression in ovarian cancer patients. MRP1 have some additional prognostic value for the clinical outcome of patients with ovarian carcinoma.
- MeSH
- analýza přežití MeSH
- chemorezistence * genetika MeSH
- dospělí MeSH
- exprese genu MeSH
- Kaplanův-Meierův odhad MeSH
- léky antitumorózní - screeningové testy využití MeSH
- lidé středního věku MeSH
- lidé MeSH
- nádory podle histologického typu MeSH
- nádory vaječníků genetika terapie MeSH
- P-glykoprotein * analýza genetika MeSH
- prognóza MeSH
- proteiny spojené s mnohočetnou rezistencí k lékům * analýza genetika MeSH
- staging nádorů MeSH
- statistika jako téma MeSH
- Check Tag
- dospělí MeSH
- lidé středního věku MeSH
- lidé MeSH
- ženské pohlaví MeSH
- Publikační typ
- práce podpořená grantem MeSH