[HTML][HTML] Efflux pumps of Gram-negative bacteria: what they do, how they do it, with what and how to deal with them

L Amaral, A Martins, G Spengler… - Frontiers in pharmacology, 2014 - frontiersin.org
This review discusses the relationship of the efflux pump (EP) system of Gram-negative
bacteria to other antibiotic resistance mechanisms of the bacterium such as quorum sensing, …

[HTML][HTML] New roads leading to old destinations: efflux pumps as targets to reverse multidrug resistance in bacteria

G Spengler, A Kincses, M Gajdács, L Amaral - Molecules, 2017 - mdpi.com
Multidrug resistance (MDR) has appeared in response to selective pressures resulting from
the incorrect use of antibiotics and other antimicrobials. This inappropriate application and …

Potential role of non-antibiotics (helper compounds) in the treatment of multidrug-resistant Gram-negative infections: mechanisms for their direct and indirect activities

…, J Molnar, JM Pages, Z Schelz, G Spengler… - International journal of …, 2008 - Elsevier
Multidrug resistance in Gram-negative bacteria is now known to be primarily caused by
overexpression of efflux pumps that extrude unrelated antibiotics from the periplasm or …

[HTML][HTML] Identification and antimicrobial susceptibility testing of anaerobic bacteria: Rubik's cube of clinical microbiology?

M Gajdács, G Spengler, E Urbán - Antibiotics, 2017 - mdpi.com
Anaerobic bacteria have pivotal roles in the microbiota of humans and they are significant
infectious agents involved in many pathological processes, both in immunocompetent and …

[HTML][HTML] Selenium and tellurium in the development of novel small molecules and nanoparticles as cancer multidrug resistance reversal agents

…, N Szemerédi, J Viktorová, C Jacob, G Spengler - Drug Resistance …, 2022 - Elsevier
Selenium is an essential trace element that is crucial for cellular antioxidant defense against
reactive oxygen species (ROS). Recently, many selenium-containing compounds have …

Possible biological and clinical applications of phenothiazines

…, A Csonka, J Molnar, L Amaral, G Spengler - Anticancer …, 2017 - ar.iiarjournals.org
Phenothiazines have been used in many areas of medicine, mainly in psychopharmacology.
These compounds are able to effectively inhibit dopamine, histamine, serotonin, …

Biological activity of persimmon (Diospyros kaki) peel extracts

…, Y Shirataki, T Kurihara, G Spengler… - Phytotherapy …, 2003 - Wiley Online Library
(HSC-2) and human submandibular gland tumor (HSG) cells was found in the acetone fractions
(A4 and A5) with IC50 ranging from 21 to 59 µg/mL. However, the cytotoxic activity was …

Repurposing old drugs to fight multidrug resistant cancers

…, I Pajeva, F Rizzolio, S Saponara, G Spengler… - Drug Resistance …, 2020 - Elsevier
Overcoming multidrug resistance represents a major challenge for cancer treatment. In the
search for new chemotherapeutics to treat malignant diseases, drug repurposing gained a …

The mechanism of plasmid curing in bacteria

G Spengler, A Molnár, Z Schelz, L Amaral… - Current drug …, 2006 - ingentaconnect.com
Bacterial plasmids have a major impact on metabolic function. Lactose fermentation of E.
coli or hemolysin B transporter expressed by the plasmids that carry these respective genes …

Biological activity of barbados cherry (acerola fruits, fruit of Malpighia emarginata DC) extracts and fractions

…, H Nakashima, A Molnár, G Spengler… - … Journal Devoted to …, 2004 - Wiley Online Library
Helicobacter pylori, two representative Candida species, and human immunodeficiency
virus (HIV). H3, H4 and HE3, which displayed higher tumor-specific cytotoxicity also showed …