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https://www.readbyqxmd.com/read/28641203/current-trends-in-electrochemical-sensing-and-biosensing-of-dna-methylation
#1
REVIEW
Ludmila Krejcova, Lukas Richtera, David Hynek, Jan Labuda, Vojtech Adam
DNA methylation plays an important role in physiological and pathological processes. Several genetic diseases and most malignancies tend to be associated with aberrant DNA methylation. Among other analytical methods, electrochemical approaches have been successfully employed for characterisation of DNA methylation patterns that are essential for the diagnosis and treatment of particular diseases. This article discusses current trends in the electrochemical sensing and biosensing of DNA methylation. Particularly, it provides an overview of applied electrode materials, electrode modifications and biorecognition elements applications with an emphasis on strategies that form the core DNA methylation detection approaches...
June 8, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28640704/immunotherapy-for-brain-tumors
#2
John H Sampson, Marcela V Maus, Carl H June
Glioblastoma (GBM) is the most lethal form of brain tumor and remains a large, unmet medical need. This review focuses on recent advances in the neurosciences that converge with the broader field of immuno-oncology. Recent findings in neuroanatomy provide a basis for new approaches of cellular therapies for tumors that involve the CNS. The ultimate success of immunotherapy in the CNS will require improved imaging technologies and methods for analysis of the tumor microenvironment in patients with GBM. It is likely that combinatorial approaches with targeted immunotherapies will be required to exploit the vulnerabilities of GBM and other brain tumors...
June 22, 2017: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28634022/goals-and-objectives-of-the-italian-network-for-tumor-biotherapy-nibit
#3
Vincenzo Russo, Alberto Amadori, Marco Bregni, Luana Calabrò, Mario Paolo Colombo, Massimo Di Nicola, Pier Francesco Ferrucci, Enrico Proietti, Michele Maio, Matteo Bellone
The explosion in the immuno-oncology field, exemplified by the clinical implementation of immune checkpoint inhibitor blockade and other immunotherapeutic strategies was quickly recognized by the Italian biomedical community, thanks to the networking activities of the Italian Network for Tumor Biotherapy (NIBIT), which has been active since 2004 in the diffusion of new scientific and clinical findings in the fields of tumor immunology and immunotherapy. Numerous activities of NIBIT have also helped to overcome the hurdles associated with the clinical implementation of cancer immune-biotherapeutic strategies at the national and international levels...
June 16, 2017: Cytokine & Growth Factor Reviews
https://www.readbyqxmd.com/read/28623714/can-the-co-dependence-of-the-immune-system-and-angiogenesis-facilitate-pharmacological-targeting-of-tumours
#4
REVIEW
Lorenzo Mortara, Andrew V Benest, David O Bates, Douglas M Noonan
Tumours elicit a number of mechanisms to induce a reprogramming of innate and adaptive immune cells to their advantage, inducing a pro-angiogenic phenotype. Investigation of these events is now leading to the identification of specific myeloid and lymphoid cell-targeted therapies, as well as of unexplored off-target activities of clinically relevant chemotherapeutic and metabolic drugs. It is also leading to an enhanced understanding of the interplay between angiogenesis and the immune system, and the value of novel co-targeting approaches using both immunotherapy and anti-angiogenic therapy...
June 14, 2017: Current Opinion in Pharmacology
https://www.readbyqxmd.com/read/28610776/two-stage-late-reconstruction-with-a-fresh-large-osteochondral-shell-allograft-transplantation-flocsat-for-a-large-ostechondral-defect-in-a-non-union-after-a-lateral-tibia-plateau-fracture-2-year-follow-up
#5
C Krettek, J Clausen, M Omar, S Noack, C Neunaber
This is the description of a 58-year-old female patient presenting 8 months after a horse riding accident with significant pain and inability to walk independently. Imaging revealed a large osseous defect of the lateral tibia plateau which was not united posteriorly. The patient refused knee replacement and we developed a patient specific two-step procedure for her. Step 1: Filling of the defect with a large cortico-cancellous autograft from the posterior iliac crest; step 2: Transplantation of a fresh large osteochondral shell allograft (FLOCSAT)...
May 17, 2017: Injury
https://www.readbyqxmd.com/read/28607803/cellular-immunity-augmentation-in-mainstream-oncologic-therapy
#6
Daohong Chen, Xiaoshi Zhang
Anticancer immunotherapy has undergone a long evolving journey for decades, and has been dramatically applied to mainstream treatments in oncology in recent 5 years. This progress represents an advanced milestone following cytotoxic medicine and targeted therapy. Cellular immunity plays a pivotal role in the immune responses of hosts to tumor antigens. Such immunity is notably suppressed during neoplastic progression due to immuno-editing processes. Cellular immunity can also be selectively re-activated to combat malignancies while exploiting the advantages of contemporary scientific breakthroughs in molecular immunology and genetic engineering...
May 2017: Cancer Biology & Medicine
https://www.readbyqxmd.com/read/28601217/-hiv-infection-as-a-cause-of-accelerated-aging-and-frailty
#7
Zaida Jiménez, Matilde Sánchez-Conde, Fátima Brañas
The HIV-infected population is aging due to the success of combination antiretroviral therapy, which prolongs survival, as well as the growing number of newly diagnosed cases in adults 50 years old and over. HIV-infected individuals suffer from an accelerated aging due to the persistent and chronic activation of the immune system that leads to immune exhaustion and accelerated immunosenescence, even when on optimal immuno-virological control treatment. The clinical expression of the immunosenescence state is an increased prevalence of aging-related non-HIV associated comorbidities and a rising prevalence of frailty occurring earlier than in the general population...
June 7, 2017: Revista Española de Geriatría y Gerontología
https://www.readbyqxmd.com/read/28600479/trabectedin-overrides-osteosarcoma-differentiative-block-and-reprograms-the-tumor-immune-environment-enabling-effective-combination-with-immune-checkpoint-inhibitors
#8
Chiara Ratti, Laura Botti, Valeria Cancila, Silvia Galvan, Ilaria Torselli, Cecilia Garofalo, Maria Cristina Manara, Lucia Bongiovanni, Cesare F Valenti, Alessia Burocchi, Mariella Parenza, Barbara Cappetti, Sabina Sangaletti, Claudio Tripodo, Katia Scotlandi, Mario P Colombo, Claudia Chiodoni
Purpose: Osteosarcoma (OS), the most common primary bone tumor, is characterized by an aggressive behavior with high tendency to develop lung metastases as well as by multiple genetic aberrations that have hindered the development of targeted therapies. New therapeutic approaches are urgently needed; however, novel combinations with immunotherapies and checkpoint inhibitors require suitable preclinical models with intact immune systems to be properly tested. <p>Experimental Design: We have developed immuno-competent OS models that grow orthotopically in the bone and spontaneously metastasize to the lungs, mimicking human OS...
June 9, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28587468/human-platelet-vesicles-exhibit-distinct-size-and-proteome
#9
Bhanu P Jena, Paul M Stemmer, Sunxi Wang, Guangzhao Mao, Kenneth T Lewis, Daniel A Walz
In the past 50 years, isolated blood platelets have had restricted use in wound healing, cancer therapy, and organ and tissue transplant, to name a few. The major obstacle for its unrestricted use has been, among others, the presence of ultrahigh concentrations of growth factors and the presence of both pro-angiogenic and anti-angiogenic proteins. To overcome this problem requires the isolation and separation of the membrane bound secretory vesicles containing the different factors. In the current study, high-resolution imaging of isolated secretory vesicles from human platelets using atomic force microscopy (AFM) and mass spectrometry enabled characterization of the remaining vesicles size and composition following their immunoseparation...
June 9, 2017: Journal of Proteome Research
https://www.readbyqxmd.com/read/28584572/journey-of-trail-from-bench-to-bedside-and-its-potential-role-in-immuno-oncology
#10
REVIEW
George E Naoum, Donald J Buchsbaum, Fady Tawadros, Ammad Farooqi, Waleed O Arafat
Induction of apoptosis in cancer cells has increasingly been the focus of many therapeutic approaches in oncology field. Since its identification as a TNF family member, TRAIL (TNF-related apoptosis-inducing ligand) paved a new path in apoptosis inducing cancer therapies. Its selective ability to activate extrinsic and intrinsic cell death pathways in cancer cells only, independently from p53 mutations responsible for conventional therapeutics resistance, spotted TRAIL as a potent cancer apoptotic agent. Many recombinant preparations of TRAIL and death receptor targeting monoclonal antibodies have been developed and being tested pre-clinically and clinically both as a single agent and in combinations...
March 3, 2017: Oncology Reviews
https://www.readbyqxmd.com/read/28583232/effect-of-topical-beclomethasone-on-inflammatory-markers-in-adults-with-eosinophilic-esophagitis-a-pilot-study
#11
Neeti Bhardwaj, Faoud Ishmael, Erik Lehman, Deborah Bethards, Francesca Ruggiero, Gisoo Ghaffari
BACKGROUND: Topical corticosteroids have proven efficacy in the treatment of eosinophilic esophagitis (EoE) and are considered the cornerstone of therapy. OBJECTIVE: To evaluate the effect of topical beclomethasone dipropionate (BDP) therapy on clinical outcomes, esophageal eosinophilia, and other markers of inflammation in patients with EoE. METHODS: Nine subjects with a biopsy-proven diagnosis of EoE were enrolled. In a cross-over design, the subjects were randomly assigned to a sequence of BDP and placebo...
June 1, 2017: Allergy & Rhinology
https://www.readbyqxmd.com/read/28578991/oncolytic-vsv-primes-differential-responses-to-immuno-oncology-therapy
#12
Nicholas M Durham, Kathy Mulgrew, Kelly McGlinchey, Noel R Monks, Hong Ji, Ronald Herbst, JoAnn Suzich, Scott A Hammond, Elizabeth J Kelly
Vesicular stomatitis virus encoding the IFNβ transgene (VSV-IFNβ) is a mediator of potent oncolytic activity and is undergoing clinical evaluation for the treatment of solid tumors. Emerging preclinical and clinical data suggest treatment of tumors with oncolytic viruses may sensitize tumors to checkpoint inhibitors and increase the anti-tumor immune response. New generations of immuno-oncology molecules including T cell agonists are entering clinical development and could be hypothesized to enhance the activity of oncolytic viruses, including VSV-IFNβ...
June 1, 2017: Molecular Therapy: the Journal of the American Society of Gene Therapy
https://www.readbyqxmd.com/read/28578643/glioblastoma-targeted-gene-therapy-based-on-pegfp-p53-loaded-superparamagnetic-iron-oxide-nanoparticles
#13
Touba Eslaminejad, Seyed Noureddin Nematollahi-Mahani, Mehdi Ansari
BACKGROUND: Bloodâ€"brain barrier (BBB) separates the neural tissue from circulating blood because of its high selectivity. This study focused on the in vitro application of magnetic nanoparticles to deliver Tp53 as a gene of interest to glioblastoma (U87) cells across a simulated BBB model that comprised KB cells. MATERIAL AND METHOD: After magnetic and non-magnetic nanoparticles were internalized by KB cells, their location in these cells was examined by transmission electron microscopy...
June 4, 2017: Current Gene Therapy
https://www.readbyqxmd.com/read/28576921/novel-elements-of-immune-suppression-within-the-tumor-microenvironment
#14
REVIEW
Devikala Gurusamy, David Clever, Robert Eil, Nicholas P Restifo
Adaptive evolution has prompted immune cells to use a wide variety of inhibitory signals, many of which are usurped by tumor cells to evade immune surveillance. Although tumor immunologists often focus on genes and proteins as mediators of immune function, here we highlight two elements from the periodic table-oxygen and potassium-that suppress the immune system in previously unappreciated ways. While both are key to the maintenance of T-cell function and tissue homeostasis, they are exploited by tumors to suppress immuno-surveillance and promote metastatic spread...
June 2017: Cancer Immunology Research
https://www.readbyqxmd.com/read/28570415/inflammatory-pseudotumor-of-the-temporal-bone-a-case-series
#15
Timothy E Ortlip, Virginia E Drake, Prashant Raghavan, John C Papadimitriou, Neil C Porter, David J Eisenman, Ronna Hertzano
OBJECTIVE: Inflammatory pseudotumor of the temporal bone is a benign, idiopathic inflammatory process that is locally invasive and a cause of significant morbidity. This study reviews our experience with seven patients and is currently the largest series to date. STUDY DESIGN: Retrospective review from January 1, 2014 to January 1, 2016. SETTING: Single tertiary medical center. PATIENTS: There were five male and two female (n = 7) subjects with a diagnosis of temporal bone inflammatory pseudotumor...
May 31, 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28567163/targeting-melanoma-with-cancer-killing-viruses
#16
Tiantian Zhang, Yogesh R Suryawanshi, Helene M Woyczesczyk, Karim Essani
Melanoma is the deadliest skin cancer with ever-increasing incidence. Despite the development in diagnostics and therapies, metastatic melanoma is still associated with significant morbidity and mortality. Oncolytic viruses (OVs) represent a class of novel therapeutic agents for cancer by possessing two closely related properties for tumor reduction: virus-induced lysis of tumor cells and induction of host anti-tumor immune responses. A variety of viruses, either in "natural" or in genetically modified forms, have exhibited a remarkable therapeutic efficacy in regressing melanoma in experimental and/or clinical studies...
2017: Open Virology Journal
https://www.readbyqxmd.com/read/28559266/an-immunomodulatory-peptide-that-confers-protection-in-an-experimental-candidemia-murine-model
#17
Camila G Freitas, Stella M F Lima, Mirna S Freire, Ana Paula C Cantuária, Nelson G O Júnior, Tatiane S Santos, Jéssica S Folha, Suzana M Ribeiro, Simoni C Dias, Taia M B Rezende, Patrícia Albuquerque, André M Nicola, César de la Fuente-Núñez, Robert E W Hancock, Octávio L Franco, Maria Sueli S Felipe
Fungal Candida species are commensals present in the mammalian skin and mucous membranes. Candida spp. are capable of breaching the epithelial barrier of immuno-compromised patients with neutrophil and cell-mediated immune dysfunctions, and it can also disseminate to multiple organs through the bloodstream. Here we examined the action of innate defence regulator (IDR)-1018, a 12-aminoacid residue peptide derived from bovine bactenecin (Bac2A), showed weak antifungal and anti-biofilm activity against C. albicans laboratory (ATCC 10231) and a clinical isolate (CI) strains (MICs of 32 μg...
May 30, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28540602/late-conversion-from-tacrolimus-to-a-belatacept-based-immuno-suppression-regime-in-kidney-transplant-recipients-improves-renal-function-acid-base-derangement-and-mineral-bone-metabolism
#18
Kevin Schulte, Clara Vollmer, Vera Klasen, Jan Hinrich Bräsen, Jodok Püchel, Christoph Borzikowsky, Ulrich Kunzendorf, Thorsten Feldkamp
BACKGROUND: Calcineurin inhibitor (CNI)-induced nephrotoxicity and chronic graft dysfunction with deteriorating glomerular filtration rate (GFR) are common problems of kidney transplant recipients. The aim of this study was to analyze the role of belatacept as a rescue therapy in these patients. METHODS: In this retrospective, observational study we investigated 20 patients (10 females, 10 males) who were switched from a CNI (tacrolimus) to a belatacept-based immunosuppression because of CNI intolerance or marginal transplant function...
May 24, 2017: Journal of Nephrology
https://www.readbyqxmd.com/read/28536458/epigenetic-priming-restores-the-hla-class-i-antigen-processing-machinery-expression-in-merkel-cell-carcinoma
#19
Cathrin Ritter, Kaiji Fan, Annette Paschen, Sine Reker Hardrup, Soldano Ferrone, Paul Nghiem, Selma Ugurel, David Schrama, Jürgen C Becker
Merkel cell carcinoma (MCC) is a rare and aggressive, yet highly immunogenic skin cancer. The latter is due to its viral or UV-associated carcinogenesis. For tumor progression MCC has to escape the host's immuno-surveillance, e.g. by loss of HLA class-I expression. Indeed, a reduced HLA class-I expression was observed in MCC tumor tissues and MCC cell lines. This reduced HLA class-I surface expression is caused by an impaired expression of key components of the antigen processing machinery (APM), including LMP2 and LMP7 as well as TAP1 and TAP2...
May 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28532102/islet-encapsulated-implantable-composite-hollow-fiber-membrane-based-device-a-bioartificial-pancreas
#20
Rohit S Teotia, Sachin Kadam, Atul Kumar Singh, Surendra Kumar Verma, Ashutosh Bahulekar, Sujata Kanetkar, Jayesh Bellare
Islets from xeno-sources and islet like clusters derived from autologus stem cells have emerged as alternatives to cadaveric pancreas used for treatment of type 1 diabetes. However, the immuno-isolation of these islets from the host immune system suffers from the issue of biocompatibility and hypoxia. To overcome the issues of immunobarrier biocompatibility, we developed a Polysulfone (Psf)/TPGS composite hollow fiber membrane (HFM) using a hollow fiber spinning pilot plant specially developed for this purpose...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
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