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Precision therapy

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https://www.readbyqxmd.com/read/28719907/tumor-heterogeneity-in-lymphomas-a-different-breed
#1
Christian M Schürch, Birgit Federmann, Leticia Quintanilla-Martinez, Falko Fend
The facts that cancer represents tissues consisting of heterogeneous neoplastic, as well as reactive, cell populations and that cancers of the same histotype may show profound differences in clinical behavior have long been recognized. With the advent of new technologies and the demands of precision medicine, the investigation of tumor heterogeneity has gained much interest. An understanding of intertumoral heterogeneity in patients with the same disease entity is necessary to optimally guide personalized treatment...
July 19, 2017: Pathobiology: Journal of Immunopathology, Molecular and Cellular Biology
https://www.readbyqxmd.com/read/28719022/engineering-the-surface-of-smart-nanocarriers-using-a-ph-thermal-gsh-responsive-polymer-zipper-for-precise-tumor-targeting-therapy-in-vivo
#2
Penghui Zhang, Yan Wang, Jing Lian, Qi Shen, Chen Wang, Bohan Ma, Yuchao Zhang, Tingting Xu, Jianxin Li, Yongping Shao, Feng Xu, Jun-Jie Zhu
Nanocarrier surface chemistry plays a vital role in mediating cell internalization and enhancing delivery efficiency during in vivo chemotherapy. Inspired by the ability of proteins to alter their conformation to mediate functions, a pH-/thermal-/glutathione-responsive polymer zipper consisting of cell-penetrating poly(disulfide)s and thermosensitive polymers bearing guanidinium/phosphate (Gu(+) /pY(-) ) motifs to spatiotemporally tune the surface composition of nanocarriers for precise tumor targeting and efficient drug delivery is developed...
July 18, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28718286/functionalized-selenium-nanosystem-as-radiation-sensitizer-of-125i-seeds-for-precise-cancer-therapy
#3
Yahui Yang, Qiang Xie, Zhennan Zhao, Lizhen He, Leung Chan, Yingxiang Liu, Yongle Chen, Mingjun Bai, Tao Pan, Yanni Qu, Long Ling, Tianfeng Chen
Although radiotherapy has been extensively applied in cancer treatment, external beam radiation therapy is still difficult to avoid damage to adjacent normal tissues in the process of delivering a sufficient radiation dose to the tumor sites of patients. To overcome this limitation, chemoradiotherapy, as a combination of chemotherapy and radiotherapy of radioactive seed, has been proposed to decrease the damage for tumor surrounding tissues and enhance the radiosensitivity of solid tumors. In the study, we designed and synthesized folic acid-conjugated selenium nanoparticles (FA@SeNPs) as cancer-targeting agent, which could be synergistically enhanced by the radioactive 125I seeds to realize anticancer efficacy and inhibited colony formation ability...
July 18, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28717958/-the-8th-edition-of-the-ajcc-cancer-staging-manual-updates-in-otorhinolaryngology-head-and-neck-surgery
#4
REVIEW
J Doescher, J A Veit, T K Hoffmann
BACKGROUND: The TNM system is an established tool for classification of solid tumors by means of tumor size and extent, the involvement of local lymph nodes, and the presence of distant metastases. The classification was established in order to visualize prognostic implications and to allow establishment of systematic therapeutic algorithms. Since the beginning of 2017 a revised version of the classification has applied. Particularly the classification of otorhinolaryngologic tumors has been thoroughly revised in the 8th edition, partly on the basis of new prognostically relevant parameters, such as infection with oncogenic human papillomavirus (HPV) subtypes...
July 17, 2017: HNO
https://www.readbyqxmd.com/read/28717660/a-novel-molecular-diagnostics-platform-for-somatic-and-germline-precision-oncology
#5
Rubén Cabanillas, Marta Diñeiro, David Castillo, Patricia C Pruneda, Cristina Penas, Guadalupe A Cifuentes, Álvaro de Vicente, Noelia S Durán, Rebeca Álvarez, Gonzalo R Ordóñez, Juan Cadiñanos
BACKGROUND: Next-generation sequencing (NGS) opens new options in clinical oncology, from therapy selection to genetic counseling. However, realization of this potential not only requires succeeding in the bioinformatics and interpretation of the results, but also in their integration into the clinical practice. We have developed a novel NGS diagnostic platform aimed at detecting (1) somatic genomic alterations associated with the response to approved targeted cancer therapies and (2) germline mutations predisposing to hereditary malignancies...
July 2017: Molecular Genetics & Genomic Medicine
https://www.readbyqxmd.com/read/28717378/evaluation-of-shoulder-girdle-strength-more-than-12-month-after-modified-radical-mastectomy-and-axillary-nodes-dissection
#6
Mahdieh Akoochakian, Heidar Ali Davari, Mohammad Hossein Alizadeh, Nader Rahnama
BACKGROUND: Muscle strength is necessary for upper body normal function. Upper extremity function impairments have been reported in breast cancer (BC) survivors. It is not possible to know precisely if cancer adjuvant therapy such as radiation and chemotherapy had any effect on the unaffected arm. The aim of this study was to compare shoulder girdle strength among women with BC and similarly aged women without cancer. MATERIALS AND METHODS: Thirty-three postmenopausal women (51 ± 6...
2017: Journal of Research in Medical Sciences: the Official Journal of Isfahan University of Medical Sciences
https://www.readbyqxmd.com/read/28717358/clinical-response-to-vedolizumab-in-ulcerative-colitis-patients-is-associated-with-changes-in-integrin-expression-profiles
#7
Friederike Fuchs, Daniela Schillinger, Raja Atreya, Simon Hirschmann, Sarah Fischer, Clemens Neufert, Imke Atreya, Markus F Neurath, Sebastian Zundler
BACKGROUND: Despite large clinical success, deeper insights into the immunological effects of vedolizumab therapy for inflammatory bowel diseases are scarce. In particular, the reasons for differential clinical response in individual patients, the precise impact on the equilibrium of integrin-expressing T cell subsets, and possible associations between these issues are not clear. METHODS: Blood samples from patients receiving clinical vedolizumab therapy were sequentially collected and analyzed for expression of integrins and chemokine receptors on T cells...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28716121/identification-of-trunk-mutations-in-gastric-carcinoma-a-case-study
#8
Zhan Zhou, Shanshan Wu, Jun Lai, Yuan Shi, Chixiao Qiu, Zhe Chen, Yufeng Wang, Xun Gu, Jie Zhou, Shuqing Chen
BACKGROUND: Intratumor heterogeneity (ITH) poses an urgent challenge for cancer precision medicine because it can cause drug resistance against cancer target therapy and immunotherapy. The search for trunk mutations that are present in all cancer cells is therefore critical for each patient. CASE PRESENTATION: In this study, we aimed to evaluate the efficiency of multiregional sequencing for the identification of trunk mutations present in all regions of a tumor as a case study...
July 17, 2017: BMC Medical Genomics
https://www.readbyqxmd.com/read/28716013/long-term-renal-survival-of-%C3%AE-3-heavy-chain-deposition-disease-a-case-report
#9
Takayuki Katsuno, Shige Mizuno, Masatsuna Mabuchi, Naotake Tsuboi, Atsushi Komatsuda, Shoichi Maruyama
BACKGROUND: Monoclonal immunoglobulin deposition disease (MIDD) is characterized by the non-amyloid deposition of monoclonal immunoglobulin fragments in the basement membranes. Heavy chain deposition disease (HCDD) is a type of MIDD. HCDD is an extremely rare disease, and only three cases have been reported in Japan up to the present. The prognosis of HCDD is very poor, and optimal treatment has not been established. Only a few cases of HCDD with favorable long-term renal prognosis have been reported to date...
July 17, 2017: BMC Nephrology
https://www.readbyqxmd.com/read/28715701/synthetic-biological-approaches-to-optogenetically-control-cell-signaling
#10
REVIEW
Katja Kolar, Wilfried Weber
Precise spatial and temporal control of cellular processes is in life sciences a highly sought-after capability. In the recent years, this goal has become progressively achievable through the field of optogenetics, which utilizes light as a non-invasive means to control genetically encoded light-responsive proteins. The latest optogenetic systems, such as those for control of subcellular localization or cellular decision-making and tissue morphogenesis provide us with insights to gain a deeper understanding of the cellular inner workings...
July 14, 2017: Current Opinion in Biotechnology
https://www.readbyqxmd.com/read/28715648/tumor-suppressor-candidate-2-tusc2-fus-1-and-human-cancers
#11
Tadas Rimkus, Sherona Sirkisoon, Alexandra Harrison, Hui-Wen Lo
Tumor suppressor candidate 2 (TUSC2, also known as FUS1) was identified in 2000 as a candidate tumor suppressor gene located in a region on chromosome 3p21.3 that is homozygously deleted in some lung and breast cancers. The deletion is rare in lung and breast cancers, but is frequent in malignant pleural mesothelioma. Evidence to date indicates that TUSC2 behaves as a tumor suppressor in lung cancer; however, its role as a tumor suppressor for other tumor types has not been fully established. Loss of TUSC2 expression at the mRNA and protein levels has been reported in various cancers...
May 2017: Discovery Medicine
https://www.readbyqxmd.com/read/28715378/the-optical-fractionator-technique-to-estimate-cell-numbers-in-a-rat-model-of-electroconvulsive-therapy
#12
Mikkel Vestergaard Olesen, Esther Kjær Needham, Bente Pakkenberg
Stereological methods are designed to describe quantitative parameters without making assumptions about size, shape, orientation and distribution of cells or structures. These methods have been revolutionary for quantitative analysis of the mammalian brain, in which volumetric cell populations are too high to count manually, and stereology is now the technique of choice whenever estimates of three-dimensional quantities need to be extracted from measurements on two-dimensional sections. All stereological methods are in principle unbiased; however, they rely on proper knowledge about the structure of interest and the characteristics of the tissue...
July 9, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28714649/-gender-differences-in-chronic-kidney-diseases-myth-or-reality
#13
Patricia Mehier, Michel Burnier, Menno Pruijm
Chronic kidney disease (CKD) concerns about 10 % of the population in Switzerland. Epidemiological studies suggest that women are less prone to the development of CKD than men, and progress less rapidly to end stage renal disease. This protection seems lost when entering menopause. The reasons for this finding may stem from hormonal, structural or hemodynamic differences, yet the precise underlying mechanisms are so far incompletely understood. Some animal studies suggest a potentially beneficial effect of estrogen therapy, mainly in diabetes, yet data in humans are lacking...
February 22, 2017: Revue Médicale Suisse
https://www.readbyqxmd.com/read/28714074/altered-metabolomic-genomic-signature-a-potential-noninvasive-biomarker-of-epilepsy
#14
Helen C Wu, Fabien Dachet, Farhad Ghoddoussi, Shruti Bagla, Darren Fuerst, Jeffrey A Stanley, Matthew P Galloway, Jeffrey A Loeb
OBJECTIVE: This study aimed to identify noninvasive biomarkers of human epilepsy that can reliably detect and localize epileptic brain regions. Having noninvasive biomarkers would greatly enhance patient diagnosis, patient monitoring, and novel therapy development. At the present time, only surgically invasive, direct brain recordings are capable of detecting these regions with precision, which severely limits the pace and scope of both clinical management and research progress in epilepsy...
July 17, 2017: Epilepsia
https://www.readbyqxmd.com/read/28713770/prognostic-impact-of-ajcc-uicc-8th-edition-new-staging-rules-in-oropharyngeal-squamous-cell-carcinoma
#15
Nora Würdemann, Steffen Wagner, Shachi Jenny Sharma, Elena-Sophie Prigge, Miriam Reuschenbach, Stefan Gattenlöhner, Jens Peter Klussmann, Claus Wittekindt
INTRODUCTION: The purpose of this study was to test whether the 8th edition of the AJCC/UICC TNM staging system (UICC) precisely differentiates between stages and reflects disease outcome in human papilloma virus (HPV)-associated oropharyngeal squamous cell carcinoma (OPSCC). PATIENTS AND METHODS: OPSCC patients that were diagnosed between 2000 and 2016 were included in this analysis and HPV status was determined by combined DNA and p16 testing. Stratification was done according to 7th and 8th UICC staging rules...
2017: Frontiers in Oncology
https://www.readbyqxmd.com/read/28713273/inhibition-of-6-phosphogluconate-dehydrogenase-reverses-cisplatin-resistance-in-ovarian-and-lung-cancer
#16
Wujian Zheng, Qi Feng, Jiao Liu, Yanke Guo, Lvfen Gao, Ruiman Li, Meng Xu, Guizhen Yan, Zhinan Yin, Shuai Zhang, Shuangping Liu, Changliang Shan
Cisplatin (DDP) is currently one of the most commonly used chemotherapeutic drugs for treating ovarian and lung cancer. However, resistance to cisplatin is common and it often leads to therapy failure. In addition, the precise mechanism of cisplatin resistance is still in its infancy. In this study, we demonstrated that the oxidative pentose phosphate pathway enzyme 6-phosphogluconate dehydrogenase (6PGD) promotes cisplatin resistance. We showed that cisplatin-resistant cancer cells (C13(∗) and A549DDP), had higher levels of 6PGD compared to their cisplatin-sensitive counterparts (OV2008 and A549)...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28713054/aggregation-induced-emission-probes-for-cancer-theranostics
#17
Meng Gao, Ben Zhong Tang
Conventional cancer therapy usually suffers from poor treatment efficiency and adverse effects. To improve the treatment efficiency, it is critical to precisely diagnose specific cancer types and monitor the therapy process in situ. Fluorescence imaging has the advantages of high sensitivity and easy operation, but conventional fluorophores suffer from aggregation-caused quenching (ACQ) and, therefore, their applications for imaging or diagnosis are severely impeded. By contrast, aggregation-induced emission (AIE) probes have significant advantages in terms of excellent photostability and a lack of self-quenching, and can be conveniently incorporated into theranostic platforms by combining them with various therapeutic modalities...
July 13, 2017: Drug Discovery Today
https://www.readbyqxmd.com/read/28712576/comparing-effectiveness-and-outcomes-in-asthma-and-cystic-fibrosis
#18
REVIEW
Michael S Schechter
As technology yields new treatments, pediatric pulmonologists need determine how best to use them and how to decide which ones are best for any specific group or individual patient. Physicians have always customized therapies based upon patient response, but the new concept of "Personalized (or precision) medicine" focuses attention to a greater degree on the individual needs of patients based on their genetic, biomarker, phenotypic, or psychosocial characteristics. The newly developed biologics for treatment of asthma and CFTR modulators for treatment of cystic fibrosis (CF) highlight this newer approach...
June 12, 2017: Paediatric Respiratory Reviews
https://www.readbyqxmd.com/read/28712102/precision-medicine-in-metastatic-colorectal-cancer-relevant-carcinogenic-pathways-and-targets-part-2-approaches-beyond-first-line-therapy-and-novel-biologic-agents-under-investigation
#19
REVIEW
Benjamin A Weinberg, Marion L Hartley, Mohamed E Salem
A frequent quandary for oncologists is the selection of chemotherapy and biologic therapy for patients with metastatic colorectal cancer in second-line and higher treatment settings. While not approved by the US Food and Drug Administration (FDA) in the first-line setting, the vascular endothelial growth factor (VEGF)-targeting agents ziv-aflibercept and ramucirumab are appropriate treatment options in the second-line setting, as is continuation of first-line bevacizumab. Tumor RAS mutational status is helpful to determine which patients may benefit from epidermal growth factor receptor (EGFR)-directed therapies, and other novel biomarkers (BRAF, HER2, and mismatch repair deficiency) allow us to select patients who may benefit from biologic therapies that are FDA-approved for other malignancies...
July 15, 2017: Oncology (Williston Park, NY)
https://www.readbyqxmd.com/read/28712100/the-role-of-genomic-techniques-in-predicting-response-to-radiation-therapy
#20
REVIEW
Noelle L Williams, Tu Dan, Nicholas G Zaorsky, Shivank Garg, Robert B Den
The understanding of the relationship between genetic variation and an individual patient's response to radiation therapy (RT) has gained significant ground over the past several years. Genetic markers have been identified that could ultimately serve as the foundation for predictive models in clinical practice, and that hold the potential to revolutionize the delivery of precision medicine in oncology. Single nucleotide polymorphisms, single genes, and/or gene signatures could ultimately serve as the basis for patient stratification in prospective clinical trials...
July 15, 2017: Oncology (Williston Park, NY)
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