Search results: Found 38

Listing 1 - 10 of 38 << page
of 4
>>
Sort by
Onkologie für die Palliativmedizin

Authors: --- ---
ISBN: 9783863952297 Year: DOI: 10.17875/gup2015-850 Language: German
Publisher: Universitätsverlag Göttingen
Subject: Medicine (General)
Added to DOAB on : 2016-06-21 11:02:24
License:

Loading...
Export citation

Choose an application

Abstract

Über 90% der in der spezialisierten Palliativversorgung betreuten Patienten leiden an einer Krebserkrankung. Sowohl der Impuls einer frühzeitigen, bedürfnisorientierten palliativmedizinischen Mitbehandlung als auch die erheblichen Weiterentwicklungen einer (zunehmend molekular definierten) Onkologie erfordern, dass auch die in der Palliativversorgung Tätigen ein Grundverständnis von Tumorbiologie, von modernen onkologischen Therapiekonzepten und von supportivtherapeutischen Möglichkeiten haben. Dieses Buch möchte dieses Grundverständnis von Krebs und onkologischer Behandlung in einer auch für Nicht-Onkologen verständlichen Form vermitteln und richtet sich vor allem an jene, die in der palliativmedizinischen Betreuung krebskranker Menschen involviert sind: Palliativärzte, Palliativpflegende, aber auch Haus- und Fachärzte, Physiotherapeuten, Seelsorger, Psychotherapeuten und viele mehr. Es will kein Lehrbuch der Onkologie ersetzen, sondern eine praxisorientierte, therapie- und versorgungsrelevante Hilfestellung im (palliativ-)medizinischen Arbeitsalltag sein – dort, wo es um eine umfassende Unterstützung von Krebspatienten geht. Das Buch ist ein Projekt der „AG Interdisziplinäre Onkologie“ der Deutschen Gesellschaft für Palliativmedizin (DGP).

Keywords

cancer --- medicine --- therapy

Anthropologies of Cancer in Transnational Worlds

Authors: --- ---
Book Series: Routledge Studies in Anthropology ISBN: 9781138776937 Year: Pages: 270 Language: English
Publisher: Taylor & Francis Grant: Wellcome Trust - 084128
Subject: Biology --- Medicine (General)
Added to DOAB on : 2016-04-08 11:01:16
License:

Loading...
Export citation

Choose an application

Abstract

Cancer is a transnational condition involving the unprecedented flow of health information, technologies, and people across national borders. Such movement raises questions about the nature of therapeutic citizenship, how and where structurally vulnerable populations obtain care, and the political geography of blame associated with this disease. This volume brings together cutting-edge anthropological research carried out across North and South America, Europe, Africa and Asia, representing low-, middle- and high-resource countries with a diversity of national health care systems. Contributors ethnographically map the varied nature of cancer experiences and articulate the multiplicity of meanings that survivorship, risk, charity and care entail. They explore institutional frameworks shaping local responses to cancer and underlying political forces and structural variables that frame individual experiences. Of particular concern is the need to interrogate underlying assumptions of research designs that may lead to the naturalizing of hidden agendas or intentions. Running throughout the chapters, moreover, are considerations of moral and ethical issues related to cancer treatment and research. Thematic emphases include the importance of local biologies in the framing of cancer diagnosis and treatment protocols, uncertainty and ambiguity in definitions of biosociality, shifting definitions of patienthood, and the sociality of care and support.

Anticipating Prevention (Book chapter)

Book title: Anthropologies of Cancer in Transnational Worlds

Authors: --- ---
Book Series: Routledge Studies in Anthropology ISBN: 9781138776937 Year: Pages: 270 Language: English
Publisher: Taylor & Francis Grant: Wellcome Trust - 084128
Subject: Medicine (General) --- Biology
Added to DOAB on : 2018-06-22 11:01:03
License:

Loading...
Export citation

Choose an application

Abstract

Cancer is a transnational condition involving the unprecedented flow of health information, technologies, and people across national borders. Such movement raises questions about the nature of therapeutic citizenship, how and where structurally vulnerable populations obtain care, and the political geography of blame associated with this disease. This volume brings together cutting-edge anthropological research carried out across North and South America, Europe, Africa and Asia, representing low-, middle- and high-resource countries with a diversity of national health care systems. Contributors ethnographically map the varied nature of cancer experiences and articulate the multiplicity of meanings that survivorship, risk, charity and care entail. They explore institutional frameworks shaping local responses to cancer and underlying political forces and structural variables that frame individual experiences. Of particular concern is the need to interrogate underlying assumptions of research designs that may lead to the naturalizing of hidden agendas or intentions. Running throughout the chapters, moreover, are considerations of moral and ethical issues related to cancer treatment and research. Thematic emphases include the importance of local biologies in the framing of cancer diagnosis and treatment protocols, uncertainty and ambiguity in definitions of biosociality, shifting definitions of patienthood, and the sociality of care and support.

DNA helicases: expression, functions and clinical implications

Authors: --- ---
Book Series: Frontiers Research Topics ISSN: 16648714 ISBN: 9782889195756 Year: Pages: 78 DOI: 10.3389/978-2-88919-575-6 Language: English
Publisher: Frontiers Media SA
Subject: Science (General) --- Genetics
Added to DOAB on : 2015-10-30 16:33:44
License:

Loading...
Export citation

Choose an application

Abstract

Helicases are the proteins that bind to double- or single-stranded DNA and/or RNA chains to unwind higher order structures, usually consuming energy from the hydrolysis of ATP molecules. The biological roles of helicases are associated with a variety of DNA and/or RNA metabolisms, including DNA-replication, -repair, -recombination, RNA processing, and transcription. Dysfunctions of helicases cause various diseases, such as xeroderma pigmentosum (XP), premature aging syndrome, cancer and immunodeficiency, in humans. Moreover, recent genetic analyses revealed that mutations in helicase-encoding genes are frequently found in patients of specific diseases. Some helicases regulate cellular senescence by controlling integrity of genomes, and others play a role in neuromuscular functions presumably by modulating processing of mRNAs. However, the molecular mechanisms of how helicases are regulated in order to maintain our health are not yet fully understood. In this research topic, we will focus on the expression and functions of helicases and their encoding genes, reviewing recent research progresses that provide new insights into development of clinical and pharmaceutical treatments targeting helicases.

Keywords

Aging --- Cancer --- DNA Repair --- helicases --- Telomere

Investigating and harnessing T-cell functions with engineered immune receptors and their ligands

Author:
Book Series: Frontiers Research Topics ISSN: 16648714 ISBN: 9782889194131 Year: Pages: 191 DOI: 10.3389/978-2-88919-413-1 Language: English
Publisher: Frontiers Media SA
Subject: Allergy and Immunology --- Medicine (General)
Added to DOAB on : 2015-12-10 11:59:06
License:

Loading...
Export citation

Choose an application

Abstract

T-cells are an essential component of the immune system that provide protection against pathogen infections and cancer and are involved in the aetiology of numerous autoimmune and autoinflammatory pathologies. Their importance in disease, the relative ease to isolate, expand and manipulate them ex vivo have put T-cells at the forefront of basic and translational research in immunology. Decades of study have shed some light on the unique way T-cells integrate extrinsic environmental cues influencing an activation program triggered by interactions between peptide-MHC complexes and the antigen-recognition machinery constituted of clonally distributed T-cell receptors and their co-receptor CD4 or CD8. The manipulation of these molecular determinants in cellular systems or as recombinant proteins has considerably enhanced our ability to understand antigen-specific T-cell activation, to monitor ongoing T-cell responses and to exploit T-cells for therapy. Even though these principles have given numerous insights in the biology of CD8+ T-cells that translate into promising therapeutic prospects, as illustrated by recent breakthroughs in cancer therapy, they have proven more challenging to apply to CD4+ T-cells.This Research Topics aims to provide a comprehensive view of the recent insights provided by the use of engineered antigen receptors and their ligands on T-cell activation and how they have been or could be harnessed to design efficient immunotherapies.

Multidrug resistance in Cancer: Pharmacological Strategies from Basic Research to Clinical Issues

Authors: --- ---
Book Series: Frontiers Research Topics ISSN: 16648714 ISBN: 9782889196159 Year: Pages: 99 DOI: 10.3389/978-2-88919-615-9 Language: English
Publisher: Frontiers Media SA
Subject: Medicine (General) --- Oncology --- Science (General) --- Therapeutics
Added to DOAB on : 2016-08-16 10:34:25
License:

Loading...
Export citation

Choose an application

Abstract

More than 40 years ago, the observation that doxorubicin-resistant tumor cells were cross-resistant to several structurally different anticancer agents was the first step in the discovery of P-glycoprotein (P-gp). P-gp belongs to the superfamily of ATP-binding cassette (ABC) transporters;its overexpression has become a therapeutic target for overcoming multidrug resistance in tumors. However, P-gp is also expressed in cells of normal tissues where it plays a physiological role, by protecting them from the toxic effects of xenobiotics. Also, ABCB1 gene polymorphisms may influence the response to anticancer drugs substrate of P-gp. Several strategies to overcome P-gp tumor drug resistance have been suggested. P-gp 'circumvention’ is the most explored and is based on the coadministration of anticancer agents and pump inhibitors (P-gp modulators). Despite the positive findings obtained in preclinical studies, results of clinical trials are not yet successful and clinical research is still ongoing. Other investigational approaches have been studied (e.g. P-gp targeting antibodies, use of antisense strategies or transcriptional regulators targeting ABCB1 gene expression) but their use is still circumscribed to the preclinical setting. A further approach is represented by the encapsulation of P-gp substrate anticancer drugs into liposomes or nanoparticles. This strategy has shown higher efficacy in tumor previously treated with the free drug. The reasons explaining the increased efficacy of liposomal/nanoparticle-based drugs in Pgp-overexpressing tumors include the coating with specific surfactants, the composition changes in the plasma membrane microdomains where P-gp is embedded, the direct impairment of P-gp catalytic mechanisms exerted by specific component of the liposomal shell, but are not yet fully understood. A second strategy to overcome P-gp tumor drug resistance is represented by exploiting the P-gp presence. Actually, P-gp-overexpressing cells show increased sensitivity (collateral sensitivity) to some drugs (e.g. verapamil, narcotic analgesics) and to some investigational compounds (e.g. NSC73306). P-gp-overexpressing cell are hypersensitive to reactive oxygen species, to agents perturbing the energetic metabolic pathways, changing the membrane compositions, reducing the efflux of endogenous toxic catabolites. However, the mechanisms explaining collateral sensitivity have not been fully elucidated. Another approach to exploit P-gp is represented by ABCB1 gene transfer to transform bone marrow progenitor cells into a drug resistant state which may allow conventional or higher doses of anticancer drug substrates of P-gp to be administered safely after transplantation. More recently the development and introduction in the clinics of anticancer drugs which are not substrates of P-gp (e.g. new microtubule modulators, topoisomerase inhibitors) has provided a new and promising strategy to overcome P-gp tumor drug resistance (P-gp 'evasion'). This ‘research topic’ issue aims at exploding the above mentioned matters, in particular by: -retracing the history of the first researches on P-gp - describing the physiological role of P-gp - describing the molecular basis, structural features and mechanism of action of P-gp - describing diagnostic laboratory methods useful to determine the expression of P-gp and its transporter function - describing strategies to overcome tumor drug resistance due to P-gp and other ABC transporters - indicating novel approaches to overcome P-gp multidrug resistance, ranging from basic research studies to pre-clinical/clinical studies.

Constructions of Cancer in Early Modern England

Author:
ISBN: 9781137487520 9781137569196 9781137487537 Year: Pages: 219 DOI: 10.1057/9781137487537 Language: English
Publisher: Springer Nature Grant: Wellcome Trust - 093090
Subject: Medicine (General)
Added to DOAB on : 2015-12-17 17:40:53
License:

Loading...
Export citation

Choose an application

Abstract

The study of early modern cancer is significant for our understanding of the period’s medical theory and practice. In many respects, cancer exemplifies the flexibility of early modern medical thought, which managed to accommodate, seemingly without friction, the notion that cancer was a disease with humoral origins alongside the conviction that the malady was in some sense ontologically independent. Discussions of why cancer spread rapidly through the body, and was difficult, if not impossible, to cure, prompted various medical explanations at the same time that physicians and surgeons joined with non-medical authors in describing the disease as acting in a way that was ‘malignant’ in the fullest sense, purposely ‘fierce’, ‘rebellious’ and intractable.3 Theories seeking to explain why cancer appeared most often in the female breast similarly joined culturally mediated anatomical and humoral theory with recognition of the peculiarities of women’s social, domestic and emotional life-cycles. Moreover, as a morbid disease, cancer generated eclectic and sometimes extreme medical responses, the mixed results of which would prompt many questions over the proper extent of pharmaceutical or surgical intervention.

Global Challenges in Radiation Oncology

Author:
Book Series: Frontiers Research Topics ISSN: 16648714 ISBN: 9782889195909 Year: Pages: 66 DOI: 10.3389/978-2-88919-590-9 Language: English
Publisher: Frontiers Media SA
Subject: Oncology --- Medicine (General)
Added to DOAB on : 2016-03-10 08:14:32
License:

Loading...
Export citation

Choose an application

Abstract

In the United States, much of the research is focused on developing new and very expensive technologies and drugs - often without a major therapeutic benefit. In resource limited countries, basic oncology care is frequently lacking. In addition, the benefits of various chemo-radiotherapy combinations for a number of malignancies are unknown as these populations have not been adequately investigated. For oncologists in these countries who have marginal to adequate resources, accrual to clinical trials is virtually non-existent to minimal, due to the complexities of their population and competing co-morbidities. As a result, there is a tremendous disparity in treatment outcomes for these populations, compared to those in developed countries. Therefore, we have asked a number of oncologists from different parts of the world to report their experience. Topics that will be covered include locally advanced breast and cervical cancer (India, South Africa), human resources for cancer control in India, systematic review of radiation resources in low and middle income countries, planning national radiotherapy services, building sustainable partnerships through the newly formed ICEC (International Cancer Export Corps), cancer disparities among American Indians, and training radiation oncologists in these under served parts of the world. Authors will discuss "lessons learned" from their populations, practical suggestions to address these disparities, and how we as a global oncology community can address, and mitigate these global challenges. The editorial by Dr. Coleman and myself highlights the invaluable contributions from our global contributors. Thank you for taking the time to read this special issue on global cancer disparities. We are all energized to begin addressing the needs of our cancer patients worldwide.

Testis cancer: Genes, environment, hormones

Authors: ---
Book Series: Frontiers Research Topics ISSN: 16648714 ISBN: 9782889196722 Year: Pages: 86 DOI: 10.3389/978-2-88919-672-2 Language: English
Publisher: Frontiers Media SA
Subject: Medicine (General) --- Internal medicine
Added to DOAB on : 2016-08-16 10:34:25
License:

Loading...
Export citation

Choose an application

Abstract

Testicular cancer (TC) is the most common cancer in males aged 20-40 years, with a worldwide incidence of 7.5 per 100,000, but the rates vary considerably between countries and ethnic groups and there is evidence also for an increasing incidence in last decades. About 95% of all TCs are represented by testicular germ cell tumors (TGCTs), which include seminoma and non-seminoma histological types. It is generally assumed that the development of TGCT is under endocrine control. In particular, unbalanced androgen/estrogen levels and/or activity are believed to represent the key events for TGCT development and progression. Furthermore, recent evidence has suggested genetic association of TGCT with variations in genes involved in hypothalamic-pituitary-testicular axis and steroidogenic enzymes. This recent evidence expands the current knowledge on the role of genetic contribution in testicular cancer susceptibility, and supports the hypothesis that variations in hormone metabolism genes might change the hormonal environment implicated in testicular carcinogenesis. Therefore, hormonal carcinogenesis is an important and controversial area of current research in TGCT, and further attention is given to genetic factors influencing hormone-related cancer risk. The genetic component to TGCT is in general strong. In fact, although environmental factors clearly contribute to TGCT development (and probably to its increasing incidence in some geographical areas), the proportion of TGCT susceptibility accounted for by the genetic effects is estimated at 25%. TGCT has high familial risks compared with most other cancer types that are generally no more than two-fold: brothers of individuals with TGCT have an 8- to 12-fold increased risk of disease, and sons of affected individuals have a 4- to 6-fold increased risk. Despite this strong familial relative risk, early results from linkage studies identified a limited relationship with genetic factors, suggesting that TGCT is a genetically complex trait. However, more recently, four genome-wide association studies (GWAS) from the UK and USA have reported association of TGCTs with six new loci (KITLG, SPRY4, BAK1, DMRT1, TERT, and ATF7IP). The strongest association for TGCT susceptibility was found for SNPs in KITLG (ligand for the membrane-bound receptor tyrosine kinase KIT) gene with a greater than 2.5-fold increased risk of disease per major allele, which is the highest reported for any cancer to date. These studies are being now replicated by other researches and attention is given to the relationship between these genetic variations, TGCT risk and frequently associated anomalies of the reproductive tract, such as cryptorchidism and infertility. Finally, over the past few decades, TCGT research has focused also on external environmental causes acting mainly as endocrine disrupters of androgen and oestrogen pathways, even during the foetal development of the testis. It is well known that the testicular dysgenesis syndrome (TDS) hypothesis, proposed ten years ago, suggests that disturbed testicular development in fetal life may result in one or more of four disorders postnatally, named cryptorchidism, hypospadias, poor semen quality, and TGCT. These four disorders are therefore considered as one clinical entity and are linked together by epidemiological and pathophysiological relations. The relative contribution of genetics and environment in TGCT development, and the interactions between endocrine disruptors and variations in genes involved in hormonal carcinogenesis is therefore another interesting area of research.

Conclusion: Death Is Only Their Desire (Book chapter)

Book title: Constructions of Cancer in Early Modern England

Author:
ISBN: 9781137569196 9781137487537 Year: Pages: 219 Language: English
Publisher: Springer Nature Grant: Wellcome Trust - 093090
Subject: Medicine (General)
Added to DOAB on : 2018-06-22 11:01:03
License:

Loading...
Export citation

Choose an application

Abstract

The study of early modern cancer is significant for our understanding of the period’s medical theory and practice. In many respects, cancer exemplifies the flexibility of early modern medical thought, which managed to accommodate, seemingly without friction, the notion that cancer was a disease with humoral origins alongside the conviction that the malady was in some sense ontologically independent. Discussions of why cancer spread rapidly through the body, and was difficult, if not impossible, to cure, prompted various medical explanations at the same time that physicians and surgeons joined with non-medical authors in describing the disease as acting in a way that was ‘malignant’ in the fullest sense, purposely ‘fierce’, ‘rebellious’ and intractable.3 Theories seeking to explain why cancer appeared most often in the female breast similarly joined culturally mediated anatomical and humoral theory with recognition of the peculiarities of women’s social, domestic and emotional life-cycles. Moreover, as a morbid disease, cancer generated eclectic and sometimes extreme medical responses, the mixed results of which would prompt many questions over the proper extent of pharmaceutical or surgical intervention.

Listing 1 - 10 of 38 << page
of 4
>>
Sort by