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https://www.readbyqxmd.com/read/28205376/drug-drug-interactions-in-pediatric-oncology-patients
#1
T E Balk, I H van der Sijs, T van Gelder, J J B Janssen, I M van der Sluis, R W F van Leeuwen, F K Engels
BACKGROUND: Drug-drug interactions (DDIs) can negatively affect pharmacotherapy. However, pediatric DDI studies are scarce. We undertook an exploratory study to investigate prevalence and clinical relevance of DDIs between cytostatic and noncytostatic drugs in outpatient pediatric oncology patients. PROCEDURE: After informed consent and inclusion, the following information was collected: currently prescribed noncytostatic and cytostatic drugs, comorbidities, and use of over-the-counter (OTC) drugs, complementary and alternative medicines (CAMs), and dietary supplements...
February 16, 2017: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/28203302/antiangiogenic-therapy-for-refractory-colorectal-cancer-current-options-and-future-strategies
#2
REVIEW
Rachel Riechelmann, Axel Grothey
Even though significant improvements in the treatment of colorectal cancer (CRC) have been made in recent years, survival rates for metastatic colorectal cancer (mCRC) are poor. Effective treatment options for metastatic colorectal cancer remain limited, and new therapeutic strategies are desperately needed. Several tyrosine kinase inhibitors (TKIs) and monoclonal antibodies (mAbs) that target angiogenesis, a critical process for facilitating tumor cell growth, invasion, and metastasis, are either approved or in clinical development for the treatment of mCRC...
February 2017: Therapeutic Advances in Medical Oncology
https://www.readbyqxmd.com/read/28194370/peptide-agonists-of-vasopressin-v2-receptor-reduce-expression-of-neuroendocrine-markers-and-tumor-growth-in-human-lung-and-prostate-tumor-cells
#3
Marina Pifano, Juan Garona, Carla S Capobianco, Nazareno Gonzalez, Daniel F Alonso, Giselle V Ripoll
Neuroendocrine tumors (NETs) comprise a heterogeneous group of malignancies that express neuropeptides as synaptophysin, chromogranin A (CgA), and specific neuronal enolase (NSE), among others. Vasopressin (AVP) is a neuropeptide with an endocrine, paracrine, and autocrine effect in normal and pathological tissues. AVP receptors are present in human lung, breast, pancreatic, colorectal, and gastrointestinal tumors. While AVP V1 receptors are associated with stimulation of cellular proliferation, AVP V2 receptor (V2r) is related to antiproliferative effects...
2017: Frontiers in Oncology
https://www.readbyqxmd.com/read/28193723/regulation-of-hematopoiesis-and-hematological-disease-by-tgf-%C3%AE-family-signaling-molecules
#4
Kazuhito Naka, Atsushi Hirao
Throughout the lifetime of an individual, hematopoietic stem cells (HSCs) maintain the homeostasis of normal hematopoiesis through the precise generation of mature blood cells. Numerous genetic studies in mice have shown that stem-cell quiescence is critical for sustaining primitive long-term HSCs in vivo. In this review, we first examine the crucial roles of transforming growth factor β (TGF-β) and related signaling molecules in not only regulating the well-known cytostatic effects of these molecules but also governing the self-renewal capacity of HSCs in their in vivo microenvironmental niche...
February 13, 2017: Cold Spring Harbor Perspectives in Biology
https://www.readbyqxmd.com/read/28185462/-options-of-chemotherapy-in-the-treatment-of-prostate-cancer
#5
I Richter, J Dvořák, J Bartoš
BACKGROUND: Prostate cancer is one of the most common malignancies in men. Chemotherapy has an important role in the management of prostate cancer, especially for the treatment of castrate resistant prostate cancer (mCRPC). According to recently published studies, chemotherapy can also be used to treat advanced hormone sensitive disease. AIM: The aim of this report is to review the currently available options for chemotherapy of prostate cancer. RESULTS: Docetaxel is a chemotherapeutic agent used for standard treatment of mCRPC as 1st line therapy...
2017: Klinická Onkologie: Casopis Ceské a Slovenské Onkologické Spolecnosti
https://www.readbyqxmd.com/read/28182987/anti-proliferative-effects-of-copper-ii-complexes-with-hydroxyquinoline-thiosemicarbazone-ligands
#6
Dominga Rogolino, Andrea Cavazzoni, Anna Gatti, Matteo Tegoni, Giorgio Pelosi, Vincenzo Verdolino, Claudia Fumarola, Daniele Cretella, Pier Giorgio Petronini, Mauro Carcelli
The possibility to influence the physiological concentration of copper ions through the careful choice of ligands is emerging as a novel intriguing strategy in the treatment of pathologies such as cancer and Alzheimer. Thiosemicarbazones play an important role in this field, because they offer a wide variety of potential functionalizations and different kinds of coordination modes. Here we report the synthesis of some 8-hydroxyquinoline thiosemicarbazone ligands containing an ONN'S donor set and their Zn(II) and Cu(II) complexes...
January 23, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28182330/heat-shock-protein-27-hsp27-hspb1-is-synthetic-lethal-to-cells-with-oncogenic-activation-of-met-egfr-and-braf
#7
John David Konda, Martina Olivero, Daniele Musiani, Simona Lamba, Maria Flavia Di Renzo
The small Heat Shock Protein of 27 KDa (HSP27) is highly expressed in many cancers and is associated with aggressive tumor behaviour, metastasis, poor prognosis and resistance to chemotherapy. We aimed at assessing the role of HSP27 in modulating responses to target therapies. We selected several oncogene-addicted cancer cell lines, which undergo either cell cycle blockade or cell death in response to agents that target the specific oncogene. Surprisingly, HSP27 suppression alone resulted in the apoptotic death of MET-addicted EBC-1 lung cancer cells, EGFR-addicted colorectal carcinoma DiFi cells and BRAF-addicted colorectal carcinoma COLO205 and OXCO-1 and melanoma COLO741 cells, all of which also undergo death when treated with the specific targeted agent...
February 9, 2017: Molecular Oncology
https://www.readbyqxmd.com/read/28176244/cytotoxic-effects-of-the-cardenolide-convallatoxin-and-its-na-k-atpase-regulation
#8
Naira Fernanda Zanchett Schneider, Izabella Thais Silva, Lara Persich, Annelise de Carvalho, Sayonarah C Rocha, Lucas Marostica, Ana Carolina Pacheco Ramos, Alex G Taranto, Rodrigo M Pádua, Wolfgang Kreis, Leandro A Barbosa, Fernão C Braga, Cláudia M O Simões
Cardenolides are cardiac glycosides, mostly obtained from natural sources. They are well known for their inhibitory action on the Na,K-ATPase, an effect that regulates cardiovascular alterations such as congestive heart failure and atrial arrhythmias. In recent years, they have also sparked new interest in their anticancer potential. In the present study, the cytotoxic effects of the natural cardenolide convallatoxin (CON) were evaluated on non-small cell lung cancer (A549 cells). It was found that CON induced cytostatic and cytotoxic effects in A549 cells, showing essentially apoptotic cell death, as detected by annexin V-propidium iodide double-staining, as well as changes in cell form...
February 7, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28161551/antitumoral-effect-and-reduced-systemic-toxicity-in-mice-after-intra-tumoral-injection-of-an-in-vivo-solidifying-calcium-sulfate-formulation-with-docetaxel
#9
Stefan Grudén, Martin Sandelin, Veera Rasanen, Patrick Micke, Mikael Hedeland, Niklas Axén, Marie Jeansson
BACKGROUND: Docetaxel is a cytostatic agent approved for treatment of non-small cell lung cancer as well as other cancers. Although docetaxel is an effective cytostatic agent, its effectiveness in clinical practice is associated with a variety of acute and long term side-effects. To overcome systemic side effects, a slow release formulation based on calcium sulfate with docetaxel for intra-tumoral administration was developed. METHODS: Two formulations with the calcium sulfate NanoZolid technology were generated with a twofold difference in docetaxel drug load...
February 1, 2017: European Journal of Pharmaceutics and Biopharmaceutics
https://www.readbyqxmd.com/read/28161400/memory-b-cells-are-major-targets-for-effective-immunotherapy-in-relapsing-multiple-sclerosis
#10
REVIEW
David Baker, Monica Marta, Gareth Pryce, Gavin Giovannoni, Klaus Schmierer
Although multiple sclerosis (MS) is considered to be a CD4, Th17-mediated autoimmune disease, supportive evidence is perhaps circumstantial, often based on animal studies, and is questioned by the perceived failure of CD4-depleting antibodies to control relapsing MS. Therefore, it was interestingly to find that current MS-treatments, believed to act via T cell inhibition, including: beta-interferons, glatiramer acetate, cytostatic agents, dimethyl fumarate, fingolimod, cladribine, daclizumab, rituximab/ocrelizumab physically, or functionally in the case of natalizumab, also depleted CD19+, CD27+ memory B cells...
January 31, 2017: EBioMedicine
https://www.readbyqxmd.com/read/28160138/pharmacodynamics-of-oxaliplatin-derived-platinum-compounds-during-hyperthermic-intraperitoneal-chemotherapy-hipec-an-emerging-aspect-supporting-the-rational-design-of-treatment-protocols
#11
Markus W Löffler, Heiko Schuster, Anne Zeck, Nicolas Quilitz, Jürgen Weinreich, Alexander Tolios, Sebastian P Haen, Philipp Horvath, Stefan Löb, Hans-Georg Rammensee, Ingmar Königsrainer, Alfred Königsrainer, Stefan Beckert
BACKGROUND: Hyperthermic intraperitoneal chemotherapy (HIPEC) is used to treat peritoneal surface malignancies with application of cytostatic drugs such as oxaliplatin (OX) after cytoreductive surgery. Despite its increased use, evidence for optimal drug dosage, and notably duration of HIPEC, is scarce. METHODS: In this study, OX distribution was comprehensively assessed in nine patients during HIPEC (300 mg OX/m(2) body surface area in Physioneal solution for 30 min)...
February 3, 2017: Annals of Surgical Oncology
https://www.readbyqxmd.com/read/28156042/double-strand-dna-breaks-induced-by-paracyclophane-gold-i-complexes
#12
Peter Werner Roesky, Sebastian Bestgen, Carmen Seidl, Thomas Wiesner, Andreas Zimmer, Martina Falk, Beate Köberle, Martina Austeri, Jan Paradies, Stefan Bräse, Ute Schepers
Gold(I) complexes of ClickPhos [2.2]paracyclophane ligands were synthesized in excellent yields and fully characterized by spectroscopic methods as well as X-ray crystallography. The complexes exhibit a rigid ligand backbone and a triazolyl moiety and were systematically studied with respect to their cytotoxic properties. In combination with the ionic complex [(GemPhos)Au(tht)][ClO4] (tht = tetrahydrothiophene), in which the gold(I) atom exhibits a distorted trigonal coordination sphere of two phosphines and a labile tht ligand, their efficiency in cytotoxicity was investigated in HeLa, MCF7, and HCT116 cells as well as in a Zebra fish model...
February 3, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28141494/butanol-is-cytotoxic-to-lactococcus-lactis-while-ethanol-and-hexanol-are-cytostatic
#13
Ann-Mette Meisner Hviid, Peter Rudahl Jensen, Mogens Kilstrup
Lactic acid bacteria currently used extensively by the dairy industry have a superior tolerance towards small chain alcohols, which makes them interesting targets for use in future bio-refineries. The mechanism underlying the alcohol tolerance of lactic acid bacteria has so far received little attention. In the present study the physiological alcohol stress response of Lactococcus lactis subsp. cremoris MG1363 towards the primary, even-chain alcohols; ethanol, butanol, and hexanol was characterized. The alcohol tolerance of L...
January 28, 2017: Microbiology
https://www.readbyqxmd.com/read/28140701/investigation-of-the-mutagenic-and-genotoxic-activities-of-lll-3-a-stat3-inhibitor
#14
E R A Ferraz, A S Fernandes, I Salviano, I Felzenszwalb, A L Mencalha
LLL-3, an anthracene derived compound, has been shown to be a promising therapeutic agent for the treatment of some kinds of cancer such as chronic myeloid leukemia and glioblastoma. However, no data regarding the toxic properties of this compound have yet been described in the literature. The present work aimed to investigate the mutagenic and genotoxic activities of LLL-3 using the TA97, TA98, TA100, TA102 and TA104 Salmonella/microsome strains for the Ames test and the micronucleus assay with the mouse macrophage cell line RAW 264...
January 2017: Drug and Chemical Toxicology
https://www.readbyqxmd.com/read/28138378/the-frequency-antifungal-susceptibility-and-enzymatic-profiles-of-candida-species-isolated-from-neutropenic-patients
#15
Maral Gharaghani, Ali Rezaei-Matehkolaei, Ali Zarei Mahmoudabadi, Bijan Keikhaei
BACKGROUND: Neutropenia, as a predisposing factor for invasive candidiasis, is defined as a reduction in neutrophil count to less than 1500/mm(3). It is a common condition in patients with hematological malignancy and cytostatic chemotherapy. Extensive chemotherapy and prophylaxis with antifungals have increased the resistance of Candida isolates to antifungal drugs. Although, Candida albicans is the most common causative agent among neutropenic patients, there is an increasing rate of non-albicans species...
November 2016: Jundishapur Journal of Microbiology
https://www.readbyqxmd.com/read/28131901/cancer-growth-regulation-by-4-hydroxynonenal
#16
REVIEW
Ana Cipak Gasparovic, Lidija Milkovic, Suzana Borovic Sunjic, Neven Zarkovic
While reactive oxygen species (ROS) gain their carcinogenic effects by DNA mutations, if generated in the vicinity of genome, lipid peroxidation products, notably 4-hydroxynonenal (HNE), have much more complex modes of activities. Namely, while ROS are short living and have short efficiency distance range (in nm or µm) HNE has strong binding affinity for proteins, thus forming relatively stable adducts. Hence, HNE can diffuse from the site or origin changing structure and function of respective proteins. Consequently HNE can influence proliferation, differentiation and apoptosis of cancer cells on one hand, while on the other it can affect genome functionality, too...
January 25, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28125906/difluoromethylornithine-in-cancer-new-advances
#17
George A Alexiou, Georgios D Lianos, Vassileios Ragos, Vasiliki Galani, Athanassios P Kyritsis
Difluoromethylornithine (DFMO; eflornithine) is an irreversible suicide inhibitor of the enzyme ornithine decarboxylase which is involved in polyamine synthesis. Polyamines are important for cell survival, thus DFMO was studied as an anticancer agent and as a chemoprevention agent. DFMO exhibited mainly cytostatic activity and had single agent efficacy as well as activity in combination with other chemotherapeutic drugs for some cancers and leukemias. Herewith, we summarize the current knowledge of the anticancer and chemopreventive properties of DFMO and assess the status of clinical trials...
January 27, 2017: Future Oncology
https://www.readbyqxmd.com/read/28122334/metformin-a-metabolic-modulator
#18
Federico Pietrocola, Guido Kroemer
Recent findings have shed new light on the mechanisms of action through which biguanides exert their anti-aging and cytostatic effects in Caenorhabditis elegans and human cell lines. The drop in energy charge resulting from the metformin mediated inhibition of mitochondrial activity affects the function of the nuclear pore complex, blocks mTOR signaling and enhances the expression of ACAD10. Whether the inhibition of this pathway is truly responsible for the anti-diabetic and cancer effects of the drug in mammals remains to be established...
22, 2017: Oncotarget
https://www.readbyqxmd.com/read/28121430/antiproliferative-activity-of-natural-taiwaniaquinoids-and-related-compounds
#19
Juan J Guardia, Rubén Tapia, Soumicha Mahdjour, Fernando Rodriguez-Serrano, Nuria Mut-Salud, Rachid Chahboun, Enrique Alvarez-Manzaneda
The in vitro antiproliferative activities of some taiwaniaquinoids and related compounds with functionalized A, B, or C rings against human breast (MCF-7), colon (T-84), and lung (A-549) tumor cell lines were assayed. The most potent compounds, 16, 27, and 36, were more effective than the naturally occurring taiwaniaquinones A (4) and F (5) in all three cell lines. The structure-activity relationship study of these new taiwaniaquinoids highlighted the correlation between the bromo substituent and the antiproliferative activity, especially in MCF-7 cells...
January 25, 2017: Journal of Natural Products
https://www.readbyqxmd.com/read/28109268/gastrin-activates-autophagy-and-increases-migration-and-survival-of-gastric-adenocarcinoma-cells
#20
Shalini V Rao, Guri Solum, Barbara Niederdorfer, Kristin G Nørsett, Geir Bjørkøy, Liv Thommesen
BACKGROUND: The peptide hormone gastrin exerts a growth-promoting effect in both normal and malignant gastrointestinal tissue. Gastrin mediates its effect via the cholecystokinin 2 receptor (CCKBR/CCK2R). Although a substantial part of the gastric adenocarcinomas express gastrin and CCKBR, the role of gastrin in tumor development is not completely understood. Autophagy has been implicated in mechanisms governing cytoprotection, tumor growth, and contributes to chemoresistance. This study explores the role of autophagy in response to gastrin in gastric adenocarcinoma cell lines...
January 21, 2017: BMC Cancer
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