keyword
MENU ▼
Read by QxMD icon Read
search

cancer and plastic

keyword
https://www.readbyqxmd.com/read/28526679/succession-of-transiently-active-tumor-initiating-cell-clones-in-human-pancreatic-cancer-xenografts
#1
Claudia R Ball, Felix Oppel, Karl Roland Ehrenberg, Taronish D Dubash, Sebastian M Dieter, Christopher M Hoffmann, Ulrich Abel, Friederike Herbst, Moritz Koch, Jens Werner, Frank Bergmann, Naveed Ishaque, Manfred Schmidt, Christof von Kalle, Claudia Scholl, Stefan Fröhling, Benedikt Brors, Wilko Weichert, Jürgen Weitz, Hanno Glimm
Although tumor-initiating cell (TIC) self-renewal has been postulated to be essential in progression and metastasis formation of human pancreatic adenocarcinoma (PDAC), clonal dynamics of TICs within PDAC tumors are yet unknown. Here, we show that long-term progression of PDAC in serial xenotransplantation is driven by a succession of transiently active TICs producing tumor cells in temporally restricted bursts. Clonal tracking of individual, genetically marked TICs revealed that individual tumors are generated by distinct sets of TICs with very little overlap between subsequent xenograft generations...
May 19, 2017: EMBO Molecular Medicine
https://www.readbyqxmd.com/read/28521190/simultaneous-determination-of-bisphenol-a-and-estrogens-in-hair-samples-by-liquid-chromatography-electrospray-tandem-mass-spectrometry
#2
Chaelin Lee, Chong Hyeak Kim, Sunghwan Kim, Sung-Hee Cho
Bisphenol A (BPA), an endocrine disrupter, is widely used to make chemicals for polycarbonate, plastics, beverage containers, epoxy resins, and cash register receipts. BPA is one of the known xenoestrogens, which have weak estrogenic activity and cause obesity, diabetes, breast cancer, and reproductive disorders. Even though the concentration level of metabolomes in hair is usually lower than that in urine and blood, there are several reasons why we chose to use hair samples. First, the sampling procedure of hairs is simple...
May 11, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28521118/automated-cassette-based-production-of-high-specific-activity-203-212-pb-peptide-based-theranostic-radiopharmaceuticals-for-image-guided-radionuclide-therapy-for-cancer
#3
Mengshi Li, Xiuli Zhang, Thomas P Quinn, Dongyoul Lee, Dijie Liu, Falk Kunkel, Brian E Zimmerman, Daniel McAlister, Keith Olewein, Yusuf Menda, Saed Mirzadeh, Roy Copping, Frances L Johnson, Michael K Schultz
A method for preparation of Pb-212 and Pb-203 labeled chelator-modified peptide-based radiopharmaceuticals for cancer imaging and radionuclide therapy has been developed and adapted for automated clinical production. Pre-concentration and isolation of radioactive Pb2+ from interfering metals in dilute hydrochloric acid was optimized using a commercially-available Pb-specific chromatography resin packed in disposable plastic columns. The pre-concentrated radioactive Pb2+ is eluted in NaOAc buffer directly to the reaction vessel containing chelator-modified peptides...
May 10, 2017: Applied Radiation and Isotopes
https://www.readbyqxmd.com/read/28520436/controlling-structure-and-function-of-polymeric-drug-delivery-nanoparticles-using-microfluidics
#4
Aman Bains, Yimeng Cao, Sundiata Kly, Jeremy E Wulff, Matthew G Moffitt
We demonstrate control of multiscale structure and drug delivery function for paclitaxel (PAX)-loaded polycaprolactone-block-poly(ethylene oxide) (PCL-b-PEO) polymeric nanoparticles (PNPs) via synthesis and flow-directed shear processing in a two-phase gas-liquid microfluidic reactor. This strategy takes a page from the engineering of commodity plastics, where processing rather than polymer chemistry provides an experimental handle on properties and function. PNPs formed from copolymers with three different PCL block lengths show sizes, morphologies, and loading efficiencies that depend on both the PCL block length and the microfluidic flow rate...
May 18, 2017: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/28517961/overcoming-chemoresistance-in-cancer-stem-cells-with-the-help-of-micrornas-in-colorectal-cancer
#5
Andrew Fesler, Shixiang Guo, Hua Liu, Ning Wu, Jingfang Ju
It has been recognized that acute resistance to chemotherapy mediated by post-transcriptional and translational control is crucial to influence response and survival in cancer treatment. Tumor cells are highly heterogeneous and have the ability to adapt a resistance phenotype through epigenetic regulations such as microRNAs. This poses a major challenge to the treatment of advanced stage colon cancer patients. Colon cancer stem cells have been identified as one of the major contributors to resistance of colon cancer to chemotherapy...
May 18, 2017: Epigenomics
https://www.readbyqxmd.com/read/28516202/-plastic-reconstruction-of-radiation-injuries
#6
P M Vogt, T R Mett, C Henkenberens, C Radtke, R Ipaktchi
In addition to surgical and drug therapy, radiotherapy (or radiation therapy) is one of the three mainstays of modern oncological therapy regimes. It uses ionizing radiation to control tumors by damaging the DNA of cancerous tissue leading to cellular death. Although advances have been made in recent years resulting in a reduced dosage to the surrounding tissues, radiation injuries and tissue-related side effects cannot be completely avoided. Knowledge of the pathophysiology, treatment modalities and interdisciplinary treatment approaches are essential for effective therapy whilst limiting side effects...
May 17, 2017: Der Chirurg; Zeitschrift Für Alle Gebiete der Operativen Medizen
https://www.readbyqxmd.com/read/28515986/use-of-and-intentions-to-use-dermoscopy-among-physicians-in-the-united-states
#7
Jeffrey B Morris, Sara V Alfonso, Nilda Hernandez, M Isabel Fernández
BACKGROUND: Dermatologists routinely use dermoscopy to improve diagnostic accuracy of skin cancers. Much less is known about its use among other physicians who routinely examine the skin, such as family physicians, internists and plastic surgeons. OBJECTIVES: To document the use of dermoscopy in a sample of US physicians and to examine physician and practice characteristics associated with ever having used a dermascope and having some intentions to incorporate dermoscopy into clinical practice during the next 12 months...
April 2017: Dermatology Practical & Conceptual
https://www.readbyqxmd.com/read/28515231/dual-phenotype-of-mda-mb-468-cancer-cells-reveals-mutual-regulation-of-tensin3-and-adhesion-plasticity
#8
Astrid Veß, Ulrich Blache, Laura Leitner, Angela R M Kurz, Anja Ehrenpfordt, Michael Sixt, Guido Posern
Plasticity between adhesive and less-adhesive states is important for mammalian cell behaviour. To investigate adhesion plasticity, we have selected a stable isogenic subpopulation of MDA-MB-468 breast carcinoma cells which grows in suspension. These suspension cells are unable to re-adhere to various matrices or to contract three-dimensional collagen lattices. By transcriptome analysis, we identified the focal adhesion protein tensin3 (Tns3) as a determinant of adhesion plasticity. Tns3 is strongly reduced on mRNA and protein level in suspension cells...
May 17, 2017: Journal of Cell Science
https://www.readbyqxmd.com/read/28514453/chromatin-states-define-tumour-specific-t-cell-dysfunction-and-reprogramming
#9
Mary Philip, Lauren Fairchild, Liping Sun, Ellen L Horste, Steven Camara, Mojdeh Shakiba, Andrew C Scott, Agnes Viale, Peter Lauer, Taha Merghoub, Matthew D Hellmann, Jedd D Wolchok, Christina S Leslie, Andrea Schietinger
Tumour-specific CD8 T cells in solid tumours are dysfunctional, allowing tumours to progress. The epigenetic regulation of T cell dysfunction and therapeutic reprogrammability (for example, to immune checkpoint blockade) is not well understood. Here we show that T cells in mouse tumours differentiate through two discrete chromatin states: a plastic dysfunctional state from which T cells can be rescued, and a fixed dysfunctional state in which the cells are resistant to reprogramming. We identified surface markers associated with each chromatin state that distinguished reprogrammable from non-reprogrammable PD1(hi) dysfunctional T cells within heterogeneous T cell populations from tumours in mice; these surface markers were also expressed on human PD1(hi) tumour-infiltrating CD8 T cells...
May 17, 2017: Nature
https://www.readbyqxmd.com/read/28514124/-partial-breast-reconstruction-by-modified-breast-reduction-techniques
#10
REVIEW
Dean D Ad-El, Sagit Meshulam Derazon, Eran Sharon, Asaf Olshinka
Partial resections of the breast are more than 50% of breast oncological surgery. The resulting defect can be substantial and cause meaningful deformity that leads to reduced body image satisfaction of the patients, affecting their ability to cope with the cancer. Parallel to the development of breast oncology techniques, an evolution of breast reconstruction techniques occurred. During the last decade, by using techniques from cosmetic breast surgery (such as breast reductions, augmentations and mastopexies), we can reconstruct extensive partial defects of the breasts at the immediate and delayed setting and achieve symmetrical aesthetic results...
July 2016: Harefuah
https://www.readbyqxmd.com/read/28510222/primary-ectopic-breast-cancer-of-the-vulva-treated-with-local-excision-of-the-vulva-and-sentinel-lymph-node-biopsy-a-case-report
#11
Takayuki Ishigaki, Yasuo Toriumi, Ryouko Nosaka, Rei Kudou, Yoshimi Imawari, Makiko Kamio, Hiroko Nogi, Hisashi Shioya, Hiroshi Takeyama
Primary breast cancer fairly infrequently occurs in ectopic breast tissue, and primary ectopic breast cancer of the vulva is particularly rare. Only 26 cases have been published in the English-language literature, and there has been no report of primary breast carcinoma of the vulva in Japan. We report a rare case of primary ectopic breast cancer of the vulva that was treated with local excision of the vulva and sentinel lymph node biopsy (SLNB). The patient was a 72-year-old woman who had noticed a right vulvar tumor 10 years earlier...
December 2017: Surgical Case Reports
https://www.readbyqxmd.com/read/28506696/current-approaches-for-avoiding-the-limitations-of-circulating-tumor-cells-detection-methods-implications-for-diagnosis-and-treatment-of-patients-with-solid-tumors
#12
REVIEW
Artur Kowalik, Magdalena Kowalewska, Stanisław Góźdź
Eight million people die of cancer each year and 90% of deaths are caused by systemic disease. Circulating tumor cells (CTCs) contribute to the formation of metastases and thus are the subject of extensive research and an abiding interest to biotechnology and pharmaceutical companies. Recent technological advances have resulted in greatly improved CTC detection, enumeration, expansion, and culture methods. However, despite the fact that nearly 150 years have passed since the first detection and description of CTCs in human blood and enormous technological progress that has taken place in this field, especially within the last decade, few CTC detection methods have been approved for routine clinical use...
April 26, 2017: Translational Research: the Journal of Laboratory and Clinical Medicine
https://www.readbyqxmd.com/read/28502819/functional-relevance-of-mirnas-in-premature-ageing
#13
REVIEW
Xurde M Caravia, David Roiz-Valle, Alba Morán-Álvarez, Carlos López-Otín
Ageing is a complex biological process characterized by the progressive loss of biological fitness due to the accumulation of macromolecular and cellular damage that affects most living organisms. Moreover, ageing is an important risk factor for many pathologies, including cardiovascular diseases, neurological disorders, and cancer. However, the ageing rate can be modulated by genetic, nutritional, and pharmacological factors, highlighting the concept of "ageing plasticity". Progeroid syndromes are a group of rare genetic diseases that resemble many characteristics of physiological ageing...
May 11, 2017: Mechanisms of Ageing and Development
https://www.readbyqxmd.com/read/28500556/reversing-glioma-malignancy-a-new-look-at-the-role-of-antidepressant-drugs-as-adjuvant-therapy-for-glioblastoma-multiforme
#14
Anna M Bielecka-Wajdman, Marta Lesiak, Tomasz Ludyga, Aleksander Sieroń, Ewa Obuchowicz
PURPOSE: The role of glioma stem cells (GSCs) in cancer progression is currently debated; however, it is hypothesised that this subpopulation is partially responsible for therapeutic resistance observed in glioblastoma multiforme (GBM). Recent studies have shown that the current treatments not only fail to eliminate the GSC population but even promote GSCs through reprogramming of glioma non-stem cells to stem cells. Since the standard GBM treatment often requires supplementation with adjuvant drugs such as antidepressants, their role in the regulation of the heterogeneous nature of GSCs needs evaluation...
June 2017: Cancer Chemotherapy and Pharmacology
https://www.readbyqxmd.com/read/28497793/image-guided-genomics-of-phenotypically-heterogeneous-populations-reveals-vascular-signalling-during-symbiotic-collective-cancer-invasion
#15
J Konen, E Summerbell, B Dwivedi, K Galior, Y Hou, L Rusnak, A Chen, J Saltz, W Zhou, L H Boise, P Vertino, L Cooper, K Salaita, J Kowalski, A I Marcus
Phenotypic heterogeneity is widely observed in cancer cell populations. Here, to probe this heterogeneity, we developed an image-guided genomics technique termed spatiotemporal genomic and cellular analysis (SaGA) that allows for precise selection and amplification of living and rare cells. SaGA was used on collectively invading 3D cancer cell packs to create purified leader and follower cell lines. The leader cell cultures are phenotypically stable and highly invasive in contrast to follower cultures, which show phenotypic plasticity over time and minimally invade in a sheet-like pattern...
May 12, 2017: Nature Communications
https://www.readbyqxmd.com/read/28497021/understanding-rare-adverse-sequelae-of-breast-implants-anaplastic-large-cell-lymphoma-late-seromas-and-double-capsules
#16
REVIEW
Mark W Clemens, Maurizio Bruno Nava, Nicola Rocco, Roberto N Miranda
Breast implant-associated anaplastic large cell lymphoma (BI-ALCL) is a distinct type of T-cell lymphoma arising around breast implants. The United States FDA recently updated the 2011 safety communication, warning that women with breast implants may have a very low risk of developing ALCL adjacent to a breast implant. According to the World Health Organization, BI-LCL is not a breast cancer or cancer of the breast tissue; it is a lymphoma, a cancer of immune cells. BI-ALCL is highly curable in the majority of patients...
April 2017: Gland Surgery
https://www.readbyqxmd.com/read/28494095/comparison-of-192-ir-169-yb-and-60-co-high-dose-rate-brachytherapy-sources-for-skin-cancer-treatment
#17
Habib Safigholi, Ali S Meigooni, William Y Song
PURPOSE: To evaluate the possibility of utilizing the high-dose rate (HDR) (169) Yb and (60) Co sources, in addition to (192) Ir, for the treatment of skin malignancies with conical applicators. METHODS: Monte Carlo (MC) simulations were used to benchmark the dosimetric parameters of single (169) Yb (4140), (60) Co (Co0.A86), and (192) Ir (mHDR-V2) brachytherapy sources in a water phantom and compared their results against published data. A standard conical tungsten alloy Leipzig-style applicator (Stand...
May 11, 2017: Medical Physics
https://www.readbyqxmd.com/read/28489410/strategically-designing-a-pumpless-microfluidic-device-on-an-inert-polypropylene-substrate-with-potential-application-in-biosensing-and-diagnostics
#18
Elham Shirani, Amir Razmjou, Hossein Tavassoli, Amir Landarani-Isfahani, Saghar Rezaei, Abolghasem Abbasi Kajani, Mohsen Asadnia, Jingwei Hou, Majid Ebrahimi Warkiani
This study is an attempt to make a step forward to implement the very immature concept of pumpless transportation of liquid into a real miniaturized device or lab-on-chip (LOC) on a plastic substrate. "Inert" plastic materials such as polypropylene (PP) are used in a variety of biomedical applications but their surface engineering is very challenging. Here, it was demonstrated that with a facile innovative wettability patterning route using fluorosilanized UV-independent TiO2 nanoparticle coating it is possible to create wedge-shape open microfluidic tracks on inert solid surfaces for low-cost biomedical devices (Lab-on-plastic)...
May 10, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28487183/mammary-stem-cells-premise-properties-and-perspectives
#19
REVIEW
Bethan Lloyd-Lewis, Olivia B Harris, Christine J Watson, Felicity M Davis
Adult mammary stem cells (MaSCs) drive postnatal organogenesis and remodeling in the mammary gland, and their longevity and potential have important implications for breast cancer. However, despite intense investigation the identity, location, and differentiation potential of MaSCs remain subject to deliberation. The application of genetic lineage-tracing models, combined with quantitative 3D imaging and biophysical methods, has provided new insights into the mammary epithelial hierarchy that challenge classical definitions of MaSC potency and behaviors...
May 6, 2017: Trends in Cell Biology
https://www.readbyqxmd.com/read/28486496/phenotypic-heterogeneity-promotes-adaptive-evolution
#20
Zoltán Bódi, Zoltán Farkas, Dmitry Nevozhay, Dorottya Kalapis, Viktória Lázár, Bálint Csörgő, Ákos Nyerges, Béla Szamecz, Gergely Fekete, Balázs Papp, Hugo Araújo, José L Oliveira, Gabriela Moura, Manuel A S Santos, Tamás Székely, Gábor Balázsi, Csaba Pál
Genetically identical cells frequently display substantial heterogeneity in gene expression, cellular morphology and physiology. It has been suggested that by rapidly generating a subpopulation with novel phenotypic traits, phenotypic heterogeneity (or plasticity) accelerates the rate of adaptive evolution in populations facing extreme environmental challenges. This issue is important as cell-to-cell phenotypic heterogeneity may initiate key steps in microbial evolution of drug resistance and cancer progression...
May 2017: PLoS Biology
keyword
keyword
78721
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"