Search results for "cancer treatment"
showing 10 items of 133 documents
Gold nanoparticle interactions with endothelial cells cultured under physiological conditions
2017
PEGylated gold nanoparticles (AuNPs) have an extended circulation time after intravenous injection in vivo and exhibit favorable properties for biosensing, diagnostic imaging, and cancer treatment. No impact of PEGylated AuNPs on the barrier forming properties of endothelial cells (ECs) has been reported, but recent studies demonstrated that unexpected effects on erythrocytes are observed. Almost all studies to date have been with static-cultured ECs. Herein, ECs maintained under physiological cyclic stretch and flow conditions and used to generate a blood-brain barrier model were exposed to 20 nm PEGylated AuNPs. An evaluation of toxic effects, cell stress, the release profile of pro-infla…
Detoxifying antitumoral drugs via nanoconjugation: the case of gold nanoparticles and cisplatin
2021
Nanoparticles (NPs) have emerged as a potential tool to improve cancer treatment. Among the proposed uses in imaging and therapy, their use as a drug delivery scaffold has been extensively highlighted. However, there are still some controversial points which need a deeper understanding before clinical application can occur. Here the use of gold nanoparticles (AuNPs) to detoxify the antitumoral agent cisplatin, linked to a nanoparticle via a pH-sensitive coordination bond for endosomal release, is presented. The NP conjugate design has important effects on pharmacokinetics, conjugate evolution and biodistribution and results in an absence of observed toxicity. Besides, AuNPs present unique o…
Use of trastuzumab for breast cancer: the impact of age.
2014
Indication for the use of trastuzumab was given in Italy in 2000 for the treatment of HER-2 metastatic breast cancer and in 2006 for early stage breast cancer. Information on trastuzumab use and on its possible variation with age in Italy is however limited. Using health care administrative databases, we evaluated the prevalence of the use of trastuzumab, and the probability for administration since the first hospitalization for breast cancer in various age groups, in two series of Italian women diagnosed with breast cancer in the Lombardy region (2004-2009) and in the Palermo district. The rate between trastuzumb users and patients with a hospitalization for breast cancer increased from 2.…
Publicidad y cáncer en la prensa escrita (1903-1912)
2020
El cáncer es una de las enfermedades más graves de nuestro tiempo debido a su elevada prevalencia, morbilidad y mortalidad, lo que la ha convertido en contenido habitual de la información periodística a lo largo de la historia. En este artículo se pretende analizar cómo fueron los anuncios publicitarios relativos a los productos, establecimientos y servicios que se ofertaban a principios del siglo XX en España, en relación con la enfermedad del cáncer, así como realizar una aproximación a la realidad social, cultural y educativa en el periodo de tiempo estudiado. A partir de la hemeroteca digital de los periódicos ABC y La Vanguardia, se seleccionaron todos los anuncios publicitarios que ap…
To defer or not to defer? A German longitudinal multicentric assessment of clinical practice in urology during the COVID-19 pandemic
2020
PLOS ONE 15(9), e0239027 (2020). doi:10.1371/journal.pone.0239027
Hsp60, a Novel Target for Antitumor Therapy: Structure-Function Features and Prospective Drugs Design
2013
Heat shock protein 60 kDa (Hsp60) is a chaperone classically believed to be involved in assisting the correct folding of other mitochondrial proteins. Hsp60 also plays a role in cytoprotection against cell stressors, displaying for example, antiapoptotic potential. Despite the plethora of studies devoted to the mechanism of Hsp60's function, especially in prokaryotes, fundamental issues still remain unexplored, including the definition of its role in cancer. Key questions still unanswered pertain to the differences in structure-function features that might exist between the well-studied prokaryotic GroEL and the largely unexplored eukaryotic Hsp60 proteins. In this article we discuss these …
Plexin-B1 activates NF-κB and IL-8 to promote a pro-angiogenic response in endothelial cells.
2011
Background The semaphorins and their receptors, the plexins, are proteins related to c-Met and the scatter factors that have been implicated in an expanding signal transduction network involving co-receptors, RhoA and Ras activation and deactivation, and phosphorylation events. Our previous work has demonstrated that Semaphorin 4D (Sema4D) acts through its receptor, Plexin-B1, on endothelial cells to promote angiogenesis in a RhoA and Akt-dependent manner. Since NF-κB has been linked to promotion of angiogenesis and can be activated by Akt in some contexts, we wanted to examine NF-κB in Sema4D treated cells to determine if there was biological significance for the pro-angiogenic phenotype o…
Intratumoral Heterogeneity, Its Contribution to Therapy Resistance and Methodological Caveats to Assessment
2014
Cancer is one of the most urgent health issues of today. According to WHO, the number of cancer cases is expected to increase by 75% in the next two decades (1). Despite some remarkable achievements in the fields of cancer prevention and early detection, the goal of developing effective anti-cancer therapies still remains unmet. Tumor recurrence due to treatment resistance is the most common cause of death from cancer. Delineating cellular and molecular mechanisms underlying tumor recurrence is of prime importance for the ability to improve the efficacy of existing therapies and develop new strategies to cancer treatment.
Komplementāras terapijas lietošana pacientiem, kas saņem pretvēža ārstēšanu - biežums, anamnēzes dokumentācija, un iespējamā mijiedarbība ar terapiju
2015
Ievads Pētījuma mērķis bija komplementārās un alternatīvās medicīnas (KAM) pielietošanas analīze plaušu vēža pacientu vidū, kas saņem standarta pretvēža terapiju; izvērtēt, kāds KAM veids ir vispopulārākais, kāda ir pacientu motivācija to izmantot, kā arī novērtēt ar KAM saistītās priekšrocības, toksicitātes un riskus. Metodes Pētījumā tika iekļauti izplatīta sīkšūnu un ne-sīkšūnu plaušu vēža pacienti, kas saņem paliatīvu ķīmijterapiju un/vai staru terapiju Paula Stradiņa Klīniskās Universitātes Slimnīcas Onkoloģijas klīnikā (Rīga). Dalībniekiem tika piedāvāta aprakstoša anketa latviešu un krievu valodās. Atbilžu precizēšanai tika izmantotas pus-strukturētas intervijas. Dati par toksicitāti…
radioterapia para el tratamiento del cáncer en la publicidad de principios del s. XX
2021
El descubrimiento de los rayos X y del radium generó gran curiosidad entre los científicos. Ambos elementos representaban la cura milagrosa que podría tratar una amplia gama de enfermedades mortales, como el cáncer, pudiendo llegar a colmar las expectativas de la población. El objetivo de dicho artículo es analizar las inserciones publicitarias relativas al radium y los rayos X aplicadas para el tratamiento del cáncer, en la prensa española a comienzos del siglo XX (1903-1912), en los periódicos ABC y La Vanguardia. Para ello, a partir de la hemeroteca digital de ambos medios se seleccionaron todas y cada una de las veces que se pudo identificar el término “cáncer” en los anuncios publicita…