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https://www.readbyqxmd.com/read/27922138/mitomycin-c-treated-human-induced-pluripotent-stem-cells-as-a-safe-delivery-system-of-gold-nanorods-for-targeted-photothermal-therapy-of-gastric-cancer
#1
Meng Yang, Yanlei Liu, Wenxiu Hou, Xiao Zhi, Chunlei Zhang, Xinquan Jiang, Fei Pan, Yuming Yang, Jian Ni, Daxiang Cui
Human-induced pluripotent stem cells (iPS) possess an intrinsic tumor tropism ability. However, iPS cells are impeded in clinical applications of tumor therapy due to the formation of teratomas and their survival in normal organs such as the liver, lungs, spleen and kidneys. Mitomycin C (MMC) can overcome this limitation by suppressing iPS proliferation. Herein, we fabricated a safe delivery system of iPS cells treated with MMC loading with gold nanorods (AuNRs) for the targeted photothermal treatment of gastric cancer...
December 6, 2016: Nanoscale
https://www.readbyqxmd.com/read/27922052/human-mesenchymal-stromal-cells-exert-hgf-dependent-cytoprotective-effects-in-a-human-relevant-pre-clinical-model-of-copd
#2
Helen Kennelly, Bernard P Mahon, Karen English
Bone-marrow derived mesenchymal stromal cells (MSCs) have potent immunomodulatory and tissue reparative properties, which may be beneficial in the treatment of inflammatory diseases such as COPD. This study examined the mechanisms by which human MSCs protect against elastase induced emphysema. Using a novel human relevant pre-clinical model of emphysema the efficacy of human MSC therapy and optimal cell dose were investigated. Protective effects were examined in the lung through histological examination. Further in vivo experiments examined the reparative abilities of MSCs after tissue damage was established and the role played by soluble factors secreted by MSCs...
December 6, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27922044/from-tumour-heterogeneity-to-advances-in-precision-treatment-of-colorectal-cancer
#3
REVIEW
Cornelis J A Punt, Miriam Koopman, Louis Vermeulen
In recent years, the high heterogeneity of colorectal cancer (CRC) has become evident. Hence, biomarkers need to be developed that enable the stratification of patients with CRC into different prognostic subgroups and in relation to response to therapies, according to the distinctive tumour biology. Currently, only RAS-mutation status is used routinely as a negative predictive marker to avoid treatment with anti-EGFR agents in patients with metastatic CRC, and mismatch-repair status can guide the use of adjuvant chemotherapy in patients with early stage colon cancer...
December 6, 2016: Nature Reviews. Clinical Oncology
https://www.readbyqxmd.com/read/27921438/-heterogeneity-of-childhood-diabetes-and-its-therapeutic-implications
#4
Zdeněk Šumník, Štěpánka Průhová, Ondřej Cinek
The prevalence of diabetes in Czech children is 1 : 500-1 000. Its incidence rose about threefold over the past 25 years. Type 1 diabetes is the prevailing form of diabetes in childhood, but also monogenic forms are frequently diagnosed. The occurrence of type 2 diabetes is still marginal in Czech children, with a relative proportion of less than 1 % of all diabetic children. Etiological diagnosis is the basic prerequisite of an effective diabetes treatment. In this review we present novel aspects on etiology and therapy of diabetes diagnosed in childhood and adolescence...
2016: Vnitr̆ní Lékar̆ství
https://www.readbyqxmd.com/read/27921434/-actual-trends-in-diagnostics-and-treatment-of-congenital-hyperinsulinism
#5
Juraj Staník, Martina Škopková, Monika Rosoľanková, Iwar Klimeš, Daniela Gašperíková
Congenital hyperinsulinism (CHI) is the most common cause of severe persistent hypoglycemia in neonates and infants. Early diagnosis and effective treatment (based on the principles of pharmacogenetics) play the key role for the prognosis. The DNA anlysis, which can identify mutation in one of the 11 genes causing MODY, is crutial in the diagnostics. Moreover, The genotype determines also the optimal therapy approach (medicaments, diet or rarely surgery). There was a large progress of novel medicaments treating particularly most severe (diazoxide-resistant) forms of CHI...
2016: Vnitr̆ní Lékar̆ství
https://www.readbyqxmd.com/read/27921374/efficacy-of-a-novel-granulocyte-monocyte-apheresis-adsorber-device-in-the-treatment-of-inflammatory-bowel-diseases-a-pilot-study
#6
Maria Di Girolamo, Alessandro Sartini, Rosina Critelli, Angela Bertani, Alberto Merighi, Erica Villa
Granulocyte monocyte apheresis (GMA) is a non-pharmacological treatment for inflammatory bowel disease. In our study, we tested a novel GMA adsorber device in terms of clinical efficacy and safety in patients' non-response to pharmacological therapy. Secondary outcomes were the evaluation of adsorber's technical performance, the reduction of inflammatory markers and the improvement of patients' life quality. The prospective study included 18 patients enrolled from 2011 to 2012 with a monitoring of 48 weeks...
December 5, 2016: Therapeutic Apheresis and Dialysis
https://www.readbyqxmd.com/read/27921280/ph-responsive-triblock-copolymeric-micelles-decorated-with-a-cell-penetrating-peptide-provide-efficient-doxorubicin-delivery
#7
Khen Eng Ng, Mohd Cairul Iqbal Mohd Amin, Haliza Katas, Muhammad Wahab Amjad, Adeel Masood Butt, Prashant Kesharwani, Arun K Iyer
This study developed novel triblock pH-responsive polymeric micelles (PMs) using cholic acid-polyethyleneimine-poly-L-arginine (CA-PEI-pArg) copolymers. PEI provided pH sensitivity, while the hydrophilic cell-penetrating pArg peptide promoted cellular PM internalization. The copolymers self-assembled into PMs in aqueous solution at above the critical micelle concentration (2.98 × 10(-7) M) and encapsulated doxorubicin in the core region, with a 34.2% (w/w) entrapment efficiency. PMs showed pH-dependent swelling, increasing in size by almost sevenfold from pH 7...
December 2016: Nanoscale Research Letters
https://www.readbyqxmd.com/read/27921187/rotor-tracking-using-phase-of-electrograms-recorded-during-atrial-fibrillation
#8
Caroline H Roney, Chris D Cantwell, Norman A Qureshi, Rasheda A Chowdhury, Emmanuel Dupont, Phang Boon Lim, Edward J Vigmond, Jennifer H Tweedy, Fu Siong Ng, Nicholas S Peters
Extracellular electrograms recorded during atrial fibrillation (AF) are challenging to interpret due to the inherent beat-to-beat variability in amplitude and duration. Phase mapping represents these voltage signals in terms of relative position within the cycle, and has been widely applied to action potential and unipolar electrogram data of myocardial fibrillation. To date, however, it has not been applied to bipolar recordings, which are commonly acquired clinically. The purpose of this study is to present a novel algorithm for calculating phase from both unipolar and bipolar electrograms recorded during AF...
December 5, 2016: Annals of Biomedical Engineering
https://www.readbyqxmd.com/read/27921177/feasibility-of-adjuvant-chemotherapy-with-s-1-plus-carboplatin-followed-by-single-agent-maintenance-therapy-with-s-1-for-completely-resected-non-small-cell-lung-cancer-results-of-the-setouchi-lung-cancer-group-study-1001
#9
Norihito Okumura, Makoto Sonobe, Kazunori Okabe, Hiroshige Nakamura, Masafumi Kataoka, Motohiro Yamashita, Masao Nakata, Kazuhiko Kataoka, Yoshinori Yamashita, Junichi Soh, Hiroshige Yoshioka, Katsuyuki Hotta, Keitaro Matsuo, Junichi Sakamoto, Shinichi Toyooka, Hiroshi Date
BACKGROUND: This multicenter study evaluated the feasibility of novel adjuvant chemotherapy with S-1 plus carboplatin followed by single-agent, long-term maintenance with S-1 in patients with completely resected stage II-IIIA non-small-cell lung cancer (NSCLC). METHODS: Patients received four cycles of S-1 (80 mg/m(2)/day for 2 weeks, followed by 2 weeks rest) plus carboplatin (area under the curve 5, day 1) followed by S-1 (80 mg/m(2)/day for 2 weeks, followed by a 1-week rest)...
December 5, 2016: International Journal of Clinical Oncology
https://www.readbyqxmd.com/read/27921110/multifunctional-pei-entrapped-gold-nanoparticles-enable-efficient-delivery-of-therapeutic-sirna-into-glioblastoma-cells
#10
Lingdan Kong, Jieru Qiu, Wenjie Sun, Jia Yang, Mingwu Shen, Lu Wang, Xiangyang Shi
RNA interference (RNAi) has been considered as a promising strategy for effective treatment of cancer. However, the easy degradation of small interfering RNA (siRNA) limits its extensive applications in gene therapy. For safe and effective delivery of siRNA, a novel vector system possessing excellent biocompatibility, highly efficient transfection efficiency and specific targeting properties has to be considered. In this study, we report the use of polyethyleneimine (PEI)-entrapped gold nanoparticles (Au PENPs) modified with an arginine-glycine-aspartic (Arg-Gly-Asp, RGD) peptide via a poly(ethylene glycol) (PEG) spacer as a vector for Bcl-2 (B-cell lymphoma-2) siRNA delivery to glioblastoma cells...
December 6, 2016: Biomaterials Science
https://www.readbyqxmd.com/read/27921081/a-fungus-specific-protein-domain-is-essential-for-rasa-mediated-morphogenetic-signaling-in-aspergillus-fumigatus
#11
Qusai Al Abdallah, Tiffany S Norton, Amy M Hill, Lawrence L LeClaire, Jarrod R Fortwendel
Ras proteins function as conserved regulators of eukaryotic growth and differentiation and are essential signaling proteins orchestrating virulence in pathogenic fungi. Here, we report the identification of a novel N-terminal domain of the RasA protein in the filamentous fungus Aspergillus fumigatus. Whereas this domain is absent in Ras homologs of higher eukaryotes, the N-terminal extension is conserved among fungi and is characterized by a short string of two to eight amino acids terminating in an invariant arginine...
November 2016: MSphere
https://www.readbyqxmd.com/read/27920894/recent-advances-in-the-preparation-and-application-of-multifunctional-iron-oxide-and-liposome-based-nanosystems-for-multimodal-diagnosis-and-therapy
#12
REVIEW
Marzia Marciello, Juan Pellico, Irene Fernandez-Barahona, Fernando Herranz, Jesus Ruiz-Cabello, Marco Filice
Nowadays, thanks to the successful discoveries in the biomedical field achieved in the last two decades, a deeper understanding about the complexity of mechanistic aspects of different pathological processes has been obtained. As a consequence, even the standard therapeutic protocols have undergone a vast redesign. In fact, the awareness about the necessity to progress towards a combined multitherapy in order to potentially increase the final healing chances has become a reality. One of the crucial elements of this novel approach is that large amounts of detailed information are highly needed and in vivo imaging techniques represent one of the most powerful tools to visualize and monitor the pathological state of the patient...
December 6, 2016: Interface Focus
https://www.readbyqxmd.com/read/27920662/possible-noninvasive-biomarker-of-eosinophilic-esophagitis-clinical-and-experimental-evidence
#13
Sathisha Upparahalli Venkateshaiah, Murli Manohar, Alok K Verma, Uwe Blecker, Anil Mishra
Eosinophilic esophagitis (EoE) diagnosis and follow-up response to therapy is based on repeated endoscopies and histological examination for eosinophils/HPF. The procedure is invasive and risky in particular for the pediatric population. Presently, there is no highly sensitive and specific noninvasive blood test available to monitor the disease pathogenesis. Reports indicate the expression of PDL1 (CD274) on the eosinophils in allergic patients. Herein, we report that CD274-expressing and -nonexpressing eosinophils were detected in both examined pediatric and adult EoE patients...
September 2016: Case Reports in Gastroenterology
https://www.readbyqxmd.com/read/27920520/ligand-based-targeted-therapy-a-novel-strategy-for-hepatocellular-carcinoma
#14
REVIEW
Min Li, Weiyue Zhang, Birong Wang, Yang Gao, Zifang Song, Qi Chang Zheng
Hepatocellular carcinoma (HCC) is the most common primary liver cancer with high morbidity and mortality worldwide. Chemotherapy is recommended to patients with intermediate or advanced stage cancer. However, the conventional chemotherapy yields low desired response rates due to multidrug resistance, fast clearance rate, nonspecific delivery, severe side effects, low drug concentration in cancer cells, and so on. Nanoparticle-mediated targeted drug delivery system can surmount the aforementioned obstacles through enhanced permeability and retention effect and active targeting as a novel approach of therapeutics for HCC in recent years...
2016: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/27920500/design-synthesis-and-evaluation-of-vegf-sirna-crs-as-a-novel-vector-for-gene-delivery
#15
Wen Zhao, Yifan Zhang, Xueyun Jiang, Chunying Cui
Small interfering RNA (siRNA) delivery is a prospective method in gene therapy, but it has application limitations such as negative charge, water solubility and high molecular weight. In this study, a safe and efficient nano-vector, CRS, was designed and synthesized to facilitate siRNA delivery. Physical and chemical properties of VEGF-siRNA/CRS were characterized by methods including scanning electron microscopy (SEM), transmission electron microscopy, zeta potential (ζ) measurement, drug-releasing rate measurement, gel electrophoresis and confocal microscopy...
2016: Drug Design, Development and Therapy
https://www.readbyqxmd.com/read/27920468/immune-checkpoint-therapy-for-pancreatic-cancer
#16
REVIEW
Henrik Johansson, Roland Andersson, Monika Bauden, Sarah Hammes, Stefan Holdenrieder, Daniel Ansari
Novel treatment modalities are necessary for pancreatic cancer. Immunotherapy with immune checkpoint inhibition has shown effect in other solid tumors, and could have a place in pancreatic cancer treatment. Most available clinical studies on immune checkpoint inhibitors for pancreatic cancer are not yet completed and are still recruiting patients. Among the completed trials, there have been findings of a preliminary nature such as delayed disease progression and enhanced overall survival after treatment with immune checkpoint inhibitors in mono- or combination therapy...
November 21, 2016: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/27920426/crystal-structure-based-discovery-of-a-novel-synthesized-parp1-inhibitor-ol-1-with-apoptosis-inducing-mechanisms-in-triple-negative-breast-cancer
#17
Leilei Fu, Shuya Wang, Xuan Wang, Peiqi Wang, Yaxin Zheng, Dahong Yao, Mingrui Guo, Lan Zhang, Liang Ouyang
Poly (ADP-ribose) polymerase-1 (PARP1) is a highly conserved enzyme focused on the self-repair of cellular DNA damage. Until now, numbers of PARP inhibitors have been reported and used for breast cancer therapy in recent years, especially in TNBC. However, developing a new type PARP inhibitor with distinctive skeleton is alternatively promising strategy for TNBC therapy. In this study, based on co-crystallization studies and pharmacophore-docking-based virtual screening, we discovered a series of dihydrodibenzo[b,e]-oxepin compounds as PARP1 inhibitors...
December 2016: Scientific Reports
https://www.readbyqxmd.com/read/27920275/hypermethylation-of-brain-natriuretic-peptide-bnp-gene-is-associated-with-the-risk-of-rheumatic-heart-disease
#18
Ni Li, Dawei Zheng, Lebo Sun, Huoshun Shi, Xiuying Zhu, Guodong Xu, Qinning Wang, Caimin Zhu, Guofeng Shao
To investigate the contribution of BNP promoter DNA methylation to the risk of rheumatic heart disease (RHD) and the influence of warfarin anticoagulant therapy on BNP methylation levels for RHD patients after surgery.BNP methylation levels were determined by bisulfite pyrosequencing from plasma samples of RHD patients compared with healthy controls. Several factors influencing the RHD patients were included age, smoking, and cholesterol levels. A fragment of 5 CG sites (CpG1-5) in the promoter region of BNP gene was measured...
December 5, 2016: Bioscience Reports
https://www.readbyqxmd.com/read/27920228/exploring-novel-paths-towards-protein-signatures-of-chronic-pain
#19
David Gomez-Varela, Manuela Schmidt
Pain is a major symptom of many medical conditions and the worldwide number one reason for people to seek medical assistance. It affects the quality of life of patients and poses a heavy financial burden on society with high costs of treatment and lost productivity. Furthermore, the treatment of chronic pain presents a big challenge as pain therapeutics often lack efficacy and exhibit minimal safety profiles. The latter can be largely attributed to the fact that current therapies target molecules with key physiological functions throughout the body...
2016: Molecular Pain
https://www.readbyqxmd.com/read/27920093/metformin-reduces-glycometabolism-of-papillary-thyroid-carcinoma-in-vitro-and-in-vivo
#20
Chen-Tian Shen, Wei-Jun Wei, Zhong-Ling Qiu, Hong-Jun Song, Xin-Yun Zhang, Zhen-Kui Sun, Quan-Yong Luo
More aggressive thyroid cancer cells show a higher activity of glycometabolism. Targeting cancer cell metabolism has emerged as a novel approach to prevent or treat malignant tumors. Glucose metabolism regulation effect of metformin in papillary thyroid cancer was investigated in the current study. Human papillary thyroid carcinoma (PTC) cell lines BCPAP and KTC1 were used. Cell viability was detected by CCK8 assay. Glucose uptake and relative gene expression were measured in metformin (0-10 mM for 48 h)-treated cells by (18)F-FDG uptake assay and western blotting analysis, respectively...
January 2017: Journal of Molecular Endocrinology
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