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Browsing by Subject "drug effect"

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    • Article  

      Alport syndrome from bench to bedside: The potential of current treatment beyond RAAS blockade and the horizon of future therapies 

      Gross, O.; Perin, L.; Constantinou-Deltas, Constantinos D. (2014)
      The hereditary type IV collagen disease Alport syndrome (AS) always leads to end-stage renal failure. Yesterday, for the past 90 years, this course was described as 'inevitable'. Today, RAAS blockade has changed the ...

    • Article  

      Bacterial cupredoxin azurin as an inducer of apoptosis and regression in human breast cancer 

      Punj, V.; Bhattacharyya, S.; Saint-Dic, D.; Vasu, C.; Cunningham, E. A.; Graves, J.; Yamada, T.; Constantinou, Andreas I.; Christov, K.; White, B.; Li, G.; Majumdar, D.; Chakrabarty, A. M.; Das Gupta, T. K. (2004)
      Azurin, a copper-containing redox protein released by the pathogenic bacterium Pseudomonas aeruginosa, is highly cytotoxic to the human breast cancer cell line MCF-7, but is less cytotoxic toward p53-negative (MDA-MB-157) ...

    • Article  

      Black cohosh (Cimicifuga racemosa L.) protects against menadione-induced DNA damage through scavenging of reactive oxygen species: Bioassay-directed isolation and characterization of active principles 

      Burdette, J. E.; Chen, S. -N; Lu, Z. -Z; Xu, H.; White, B. E. P.; Fabricant, D. S.; Liu, J.; Fong, H. H. S.; Farnsworth, N. R.; Constantinou, Andreas I.; Van Breemen, R. B.; Pezzuto, J. M.; Bolton, J. L. (2002)
      The roots/rhizomes of Cimicifuga racemosa L. (Nutt.) (black cohosh) have traditionally been used to treat menopausal symptoms through an unknown mechanism of action. In an effort to determine if black cohosh had additional ...

    • Article  

      Drug delivery innovations for enhancing the anticancer potential of vitamin e isoforms and their derivatives 

      Neophytou, Christiana M.; Constantinou, Andreas I. (2015)
      Vitamin E isoforms have been extensively studied for their anticancer properties. Novel drug delivery systems (DDS) that include liposomes, nanoparticles, and micelles are actively being developed to improve Vitamin E ...

    • Article  

      The effect of the phytoestrogens genistein, daidzein, and equol on the growth of tamoxifen-resistant T47D/PKCα 

      Tonetti, D. A.; Zhang, Y.; Zhao, H.; Lim, S. -B; Constantinou, Andreas I. (2007)
      Soy supplements are often consumed by women for alleviating menopausal symptoms or for the perceived protective effects against breast cancer. More concerning is the concurrent consumption of soy isoflavones with tamoxifen ...

    • Article  

      Equol enhances tamoxifen's anti-tumor activity by induction of caspase-mediated apoptosis in MCF-7 breast cancer cells 

      Charalambous, Christina; Pitta, Chara A.; Constantinou, Andreas I. (2013)
      Background: Soy phytoestrogens, such as daidzein and its metabolite equol, have been proposed to be responsible for the low breast cancer rate in Asian women. Since the majority of estrogen receptor positive breast cancer ...

    • Article  

      Evaluation of estrogenic activity of plant extracts for the potential treatment of menopausal symptoms 

      Liu, J.; Burdette, J. E.; Xu, H.; Gu, C.; Van Breemen, R. B.; Bhat, K. P. L.; Booth, N.; Constantinou, Andreas I.; Pezzuto, J. M.; Fong, H. H. S.; Farnsworth, N. R.; Bolton, J. L. (2001)
      Eight botanical preparations that are commonly used for the treatment of menopausal symptoms were tested for estrogenic activity. Methanol extracts of red clover (Trifolium pratense L.), chasteberry (Vitex agnus-castus ...

    • Article  

      Evidence that a metabolilte of equine estrogens, 4-hydroxyequilenin, induces cellular transformation in vitro 

      Pisha, E.; Lui, X.; Constantinou, Andreas I.; Bolton, J. L. (2001)
      Estrogen replacement therapy has been correlated with an increased risk of developing hormone-dependent cancers. 4-Hydroxyequilenin (4-OHEN) is a catechol metabolite of equilenin and equilin which are components of the ...

    • Article  

      Genetic analysis of HIV type 1 strains from newly infected untreated patients in cyprus: high genetic diversity and low prevalence of drug resistance. 

      Kousiappa, Ioanna; van de Vijver, D. A.; Demetriades, Ioannis; Kostrikis, Leontios G. (2009)
      Abstract The molecular epidemiology of HIV-1 infection was first studied in Cyprus in the mid-1990s, but the extent of HIV-1 diversity and the prevalence of drug resistance have remained elusive. In an effort to address ...

    • Article  

      Induction of caspase-independent programmed cell death by vitamin E natural homologs and synthetic derivatives. 

      Constantinou, Constantina; Hyatt, John Anthony; Vraka, Panayiota S.; Papas, Andreas M.; Papas, Konstantinos A.; Neophytou, Christiana M.; Hadjivassiliou, V.; Constantinou, Andreas I. (2009)
      Current observations in the literature suggest that vitamin E may be a suitable candidate for cancer chemotherapy. To investigate this further, we examined the ability of the vitamin E natural homologs [alpha-, beta-, ...

    • Article  

      New antimony(III) bromide complexes with thioamides: Synthesis, characterization, and cytostatic properties 

      Ozturk, I. I.; Hadjikakou, Sotiris K.; Hadjiliadis, Nick; Kourkoumelis, Nikolaos; Kubicki, Maciej; Tasiopoulos, Anastasios J.; Scleiman, H.; Barsan, M. M.; Butler, I. S.; Balzarini, J. (2009)
      New antimony(III) bromide complexes with the heterocyclic thioamides, thiourea (TU), 2-mercapto-1-methylimidazole (MMl), 2-mercapto-benzimidazole (MBZlM), 2-mercapto-5-methyl-benzimidazole (MMBZIM), 5-ethoxy-2-mercapto- ...

    • Article  

      Persistence of episomal HIV-1 infection intermediates in patients on highly active anti-retroviral therapy 

      Sharkey, M. E.; Teo, I.; Greenough, T.; Sharova, N.; Luzuriaga, K.; Sullivan, J. L.; Bucy, R. P.; Kostrikis, Leontios G.; Haase, A.; Veryard, C.; Davaro, R. E.; Cheeseman, S. H.; Daly, J. S.; Bova, C.; Ellison III, R. T.; Mady, B.; Lai, K. K.; Moyle, G.; Nelson, M.; Gazzard, B.; Shaunak, S.; Stevenson, M. (2000)
      Treatment of HIV-1-infected individuals with a combination of anti- retroviral agents results in sustained suppression of HIV-1 replication, as evidenced by a reduction in plasma viral RNA to levels below the limit of ...

    • Article  

      Regulation of Lactate Dehydrogenase Gene Expression by AMP‐dependent Protein Kinase Subunits 

      JUNGMANN, R. A.; Constantinou, Andreas I.; SQUINTO, S. P.; KWAST‐WELFELD, J.; SCHWEPPE, J. S. (1986)

    • Article  

      Resistance to etoposide in human leukemia HL-60 cells: Reduction in drug-induced DNA cleavage associated with hypophosphorylation of topoisomerase II phosphopeptides 

      Ganapathi, R.; Constantinou, Andreas I.; Kamath, N.; Dubyak, G.; Grabowski, D.; Krivacic, K. (1996)
      Tumor cell resistance to anthracyclines and epipodophyllotoxins can be due to reduced drug accumulation and/or alterations in the activity of topoisomerase II (TOPO II). HL-60 cells selected in 0.05 μg/ml doxorubicin (DOX) ...

    • Article  

      A small molecule mimicking a phosphatidylinositol (4,5)-bisphosphate binding pleckstrin homology domain 

      Mak, L. H.; Georgiades, Savvas N.; Rosivatz, E.; Whyte, G. F.; Mirabelli, M.; Vilar, R.; Woscholski, R. (2011)
      Inositol phospholipids have emerged as important key players in a wide variety of cellular functions. Among the seven existing inositol phospholipids, phosphatidylinositol (4,5)-bisphosphate (PI(4,5)P2) has attracted much ...

    • Article  

      Structural motifs and biological studies of new antimony(iii) iodide complexes with thiones 

      Ozturk, I.; Filimonova, S.; Hadjikakou, Sotiris K.; Kourkoumelis, Nikolaos; Dokorou, Vaso N.; Manos, Manolis J.; Tasiopoulos, Anastasios J.; Barsan, M. M.; Butler, I. S.; Milaeva, E. R.; Balzarini, J.; Hadjiliadis, Nick (2010)
      Eight new antimony(III) iodide complexes of the heterocyclic thioamides, 2-mercapto-1-methylimidazole (MMI), 2-mercaptobenzlmidazole (MBZIM), 5-ethoxy-2-mercaptobenzimldazole (EtMBZIM), 2-mercaptothiazolidine (MTZD), ...

    • Article  

      Synthesis, structural characterization and in vitro inhibitory studies against human breast cancer of the bis-(2,6-di-tert-butylphenol)tin(iv) dichloride and its complexes 

      Shpakovsky, D. B.; Banti, Christina N.; Beaulieu-Houle, G.; Kourkoumelis, Nikolaos; Manoli, Maria; Manos, Manolis J.; Tasiopoulos, Anastasios J.; Hadjikakou, Sotiris K.; Milaeva, E. R.; Charalabopoulos, Konstantinos A.; Bakas, Thomas V.; Butler, I. S.; Hadjiliadis, Nick (2012)
      Four new organotin(iv) complexes of bis-(2,6-di-tert-butylphenol)tin(iv) dichloride [(tert-Bu-)2(HO-Ph)]2SnCl2 (1) with the heterocyclic thioamides 2-mercapto-pyrimidine (PMTH), 2-mercapto-4-methyl- pyrimidine (MPMTH), ...

    • Article  

      Targeting colon cancer cells with genistein-17.1A immunoconjugate. 

      Gentile, M. S.; Vasu, C.; Green, A.; Murillo, G.; Das Gupta, T. K.; Constantinou, Andreas I.; Prabhakar, B. S.; Salti, G. I. (2003)
      We have shown that genistein, a major component of soy, has anti-colon cancer effects in vitro. These effects are attainable at high concentrations that are difficult to achieve in the serum. The purpose of this study was ...

    • Article  

      Transmission of drug-resistant HIV-1 is stabilizing in Europe 

      Vercauteren, J.; Wensing, A. M. J.; Van De Vijver, D. A. M. C.; Albert, Jan; Balotta, Claudia; Hamouda, O.; Kücherer, C.; Struck, D.; Schmit, J. -C; Åsjö, Birgitta; Bruckova, M.; Camacho, Ricardo J.; Clotet, B.; Coughlan, S.; Grossman, Z.; Horban, A.; Korn, K.; Kostrikis, Leontios G.; Nielsen, C.; Paraskevis, Dimitrios N.; Poljak, M.; Puchhammer-Stöckl, E.; Riva, C.; Ruiz, L.; Salminen, M.; Schuurman, R.; Sonnerborg, A.; Stanekova, D.; Stanojevic, M.; Vandamme, A. M.; Boucher, C. A. B. (2009)
      The SPREAD Programme investigated prospectively the time trend from September 2002 through December 2005 of transmitted drug resistance (TDR) among 2793 patients in 20 European countries and in Israel with newly diagnosed ...

    • Article  

      Vitamin E and cancer: An insight into the anticancer activities of vitamin E isomers and analogs 

      Constantinou, Constantina; Papas, Andreas M.; Constantinou, Andreas I. (2008)
      Current observations in the literature suggest that vitamin E may be a suitable candidate for the adjuvant treatment of cancer. Even though historically most research focused on α-tocopherol, more recent evidence suggests ...

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