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https://www.readbyqxmd.com/read/28345276/a-prospective-evaluation-of-levofloxacin-based-triple-therapy-for-refractory-helicobacter-pylori-infection-in-australia
#1
Ph Katelaris, Al Katelaris
BACKGROUND: First line Helicobacter pylori eradication failure is a common and challenging problem. AIMS: To assess the efficacy of salvage levofloxacin-based triple therapy in Australia. METHODS: Prospective patients referred after prior treatment failure(s) were prescribed esomeprazole 40 mg, amoxicillin 1 g and levofloxacin 500 mg each twice daily for ten days. All patients received detailed written and verbal adherence support. Outcome assessment was by (13) C-urea breath test and/or histology and urease test...
March 27, 2017: Internal Medicine Journal
https://www.readbyqxmd.com/read/28338291/versatile-polymer-nanoparticles-as-two-photon-triggered-photosensitizers-for-simultaneous-cellular-deep-tissue-imaging-and-photodynamic-therapy
#2
Liang Guo, Jiechao Ge, Qian Liu, Qingyan Jia, Hongyan Zhang, Weimin Liu, Guangle Niu, Sha Liu, Jianru Gong, Steffen Hackbarth, Pengfei Wang
Clinical applications of current photodynamic therapy (PDT) photosensitizers (PSs) are often limited by their absorption in the UV-vis range that possesses limited tissue penetration ability, leading to ineffective therapeutic response for deep-seated tumors. Alternatively, two-photon excited PS (TPE-PS) using NIR light triggered is one the most promising candidates for PDT improvement. Herein, multimodal polymer nanoparticles (PNPs) from polythiophene derivative as two-photon fluorescence imaging as well as two-photon-excited PDT agent are developed...
March 24, 2017: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/28338285/remote-control-of-cellular-functions-the-role-of-smart-nanomaterials-in-the-medicine-of-the-future
#3
REVIEW
Giada Graziana Genchi, Attilio Marino, Agostina Grillone, Ilaria Pezzini, Gianni Ciofani
The remote control of cellular functions through smart nanomaterials represents a biomanipulation approach with unprecedented potential applications in many fields of medicine, ranging from cancer therapy to tissue engineering. By actively responding to external stimuli, smart nanomaterials act as real nanotransducers able to mediate and/or convert different forms of energy into both physical and chemical cues, fostering specific cell behaviors. This report describes those classes of nanomaterials that have mostly paved the way to a "wireless" control of biological phenomena, focusing the discussion on some examples close to the clinical practice...
March 24, 2017: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/28336455/targeted-delivery-of-epirubicin-to-tumor-associated-macrophages-by-sialic-acid-cholesterol-conjugate-modified-liposomes-with-improved-antitumor-activity
#4
Songlei Zhou, Ting Zhang, Bo Peng, Xiang Luo, Xinrong Liu, Ling Hu, Yang Liu, Donghua Di, Yanzhi Song, Yihui Deng
With the knowledge that the receptors of sialic acid are overexpressed on the surface of tumor-associated macrophages (TAMs), which play a crucial role in the tumor's progression and metastasis, a sialic acid-cholesterol conjugate (SA-CH) was synthesized and modified on the surface of epirubicin (EPI)-loaded liposomes (EPI-SAL) to improve the delivery of EPI to the TAMs. The liposomes were developed using remote loading technology via a pH gradient. The liposomes were evaluated for particle size, encapsulation efficiency, in vitro release, stability, in vitro cytotoxicity and pharmacokinetics...
March 20, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28333199/effect-of-butyrate-and-lactobacillus-gg-on-a-butyrate-receptor-and-transporter-during-campylobacter-jejuni-exposure
#5
Gail A M Cresci, Paul C Mayer, Stuart A Thompson
Campylobacter jejuni (C. jejuni) frequently infects humans causing many gastrointestinal symptoms, fever, fatigue and several long-term debilitating diseases. Current treatment for campylobacteriosis includes rehydration and in some cases, antibiotic therapy. Probiotics are used to treat several gastrointestinal diseases. Butyrate is a short-chain fatty acid known to promote intestinal health. Interaction of butyrate with its respective receptor (HCAR2) and transporter (SLC5A8), both expressed in the intestine, is associated with water and electrolyte absorption as well as providing defense against colon cancer and inflammation...
February 23, 2017: FEMS Microbiology Letters
https://www.readbyqxmd.com/read/28331999/the-acidic-microenvironment-as-a-possible-niche-of-dormant-tumor-cells
#6
REVIEW
Silvia Peppicelli, Elena Andreucci, Jessica Ruzzolini, Anna Laurenzana, Francesca Margheri, Gabriella Fibbi, Mario Del Rosso, Francesca Bianchini, Lido Calorini
Although surgical excision, chemo-, and radio-therapy are clearly advanced, tumors may relapse due to cells of the so-called "minimal residual disease". Indeed, small clusters of tumor cells persist in host tissues after treatment of the primary tumor elaborating strategies to survive and escape from immunological attacks before their relapse: this variable period of remission is known as "cancer dormancy". Therefore, it is crucial to understand and consider the major concepts addressing dormancy, to identify new targets and disclose potential clinical strategies...
March 22, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28327716/chemo-photodynamic-combined-gene-therapy-and-dual-modal-cancer-imaging-achieved-by-ph-responsive-alginate-chitosan-multilayer-modified-magnetic-mesoporous-silica-nanocomposites
#7
Hong Yang, Yin Chen, Zhongyuan Chen, Yue Geng, Xiaoxue Xie, Xue Shen, Tingting Li, Shun Li, Chunhui Wu, Yiyao Liu
Multifunctional theranostics have offered some interesting new opportunities for cancer therapy and diagnosis in the last decade. Herein, magnetic mesoporous silica nanoparticles (M-MSNs) were designed and synthesized, then the photosensitizer chlorin e6 (Ce6) and antitumor drug doxorubicin (Dox) were adsorbed onto the M-MSNs. Biocompatible alginate/chitosan polyelectrolyte multilayers (PEM) were assembled on the M-MSNs to achieve a pH-responsive drug delivery system and adsorb P-gp shRNA for reversing the multidrug resistance...
March 22, 2017: Biomaterials Science
https://www.readbyqxmd.com/read/28322024/au-nanoclusters-and-photosensitizer-dual-loaded-spatiotemporal-controllable-liposomal-nanocomposites-enhance-tumor-photodynamic-therapy-effect-by-inhibiting-thioredoxin-reductase
#8
Fuping Gao, Weiping Zheng, Liang Gao, Pengju Cai, Ru Liu, Yaling Wang, Qing Yuan, Yuliang Zhao, Xueyun Gao
Photodynamic therapy (PDT) is a minimally invasive therapeutic procedure of tumors with high selectivity and low side effect. However, it is usually not efficient in long-lasting tumor control. One of the main reasons is tumor cells develop some protective mechanisms that help them to deal with oxidative stress in the environment. The thioredoxin system in cancer is an important antioxidant defense system. Au nanoclusters could effectively inhibit thioredoxin reductase (TrxR) in tumor cell cytoplasm. Herein, Au nanoclusters and photosensitizer Chlorine 6 (Ce6) are co-loaded in spatiotemporal controllable liposomal nanocomposites...
March 21, 2017: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/28301379/hypothesis-robophera-a-phosphatase-and-tensin-homolog-targeted-antineoplastic-therapy
#9
Arsalan Azimi, Arian Azimi
Phosphatase and tensin homolog (PTEN) is a protein that regulates cellular response to growth/antigrowth signals, cell survival, apoptosis, proliferation, angiogenesis, and cellular migration. Impairments in these processes are the main hallmarks of cancer, and reduced expression, activity, or stability of PTEN are among the most common etiologies of diverse types of sporadic cancers. Rosiglitazone (RO), bortezomib (BO), phosphatidylserine (PH), ethanol (E), and radiotherapy (RA) (ROBOPHERA) stimulate the expression and increase the activity of PTEN...
April 2017: Anti-cancer Drugs
https://www.readbyqxmd.com/read/28286614/is-there-any-concordance-between-of-ihc-with-fish-in-her2-positive-breast-cancer-patients
#10
Mehrdad Payandeh, Masoud Sadeghi, Edris Sadeghi, Alireza Janbakhsh
Background: In developed or developing countries, the most common cancer in women is breast cancer with a pick in 40-50 years in Asia. Herein, we compared the association between IHC with FISH in HER2-positive breast cancer patients and affection of trastuzumab on disease free survival and overall survival (OS). Subjects and Methods: Immunohistochemical (IHC) analysis of hormone receptors and HER2 was performed in 133 patients with breast cancer between 2003 and 2014. Patients were selected for Herceptin adjuvant treatment, according to IHC 3+ or FISH+...
January 1, 2017: International Journal of Hematology-oncology and Stem Cell Research
https://www.readbyqxmd.com/read/28277892/development-of-optimized-inhalable-gemcitabine-loaded-gelatin-nanocarriers-for-lung-cancer
#11
Susanne R Youngren-Ortiz, David B Hill, Peter R Hoffmann, Kenneth R Morris, Edward G Barrett, M Gregory Forest, Mahavir B Chougule
BACKGROUND: Aerosol delivery of chemotherapeutic nanocarriers represents a promising alternative for lung cancer therapy. This study optimized gemcitabine (Gem)-loaded gelatin nanocarriers (GNCs) cross-linked with genipin (Gem-GNCs) to evaluate their potential for nebulized lung cancer treatment. METHODS: Gem-GNCs were prepared by two-step desolvation and optimized through Taguchi design and characterized for physicochemical properties. Particle size and morphology were confirmed by scanning and transmission electron microscopy...
March 9, 2017: Journal of Aerosol Medicine and Pulmonary Drug Delivery
https://www.readbyqxmd.com/read/28276317/inhibitors-of-pi3k-erk-1-2-p38-mapk-show-preferential-activity-against-endocrine-resistant-breast-cancer-cells
#12
Maitham A Khajah, Princy M Mathew, Yunus A Luqmani
Current mainstream pharmacological options for treatment of endocrine resistant breast cancer have limitations in termsof side effect profile and lack of discrimination between normal and cancer cells. In the current study, we assessed the responses of normal breast epithelial cells MCF10A, estrogen receptor (ER) positive MCF-7 and ER silenced pII breast cancer cells, to inhibitors (either individually or in combination) of downstream signaling molecules. The expression/activity of ERK1/2, p38 MAPK and Akt was determined by western blotting...
March 8, 2017: Oncology Research
https://www.readbyqxmd.com/read/28274796/dual-functional-lipomet-mediates-envelope-type-nanoparticles-to-combinational-oncogene-silencing-and-tumor-growth-inhibition
#13
Kai Shi, Yi Zhao, Lei Miao, Andrew Satterlee, Matthew Haynes, Cong Luo, Sara Musetti, Leaf Huang
The success of small interfering RNA (siRNA)-mediated gene silencing for cancer therapy is still limited because of its instability and poor intracellular internalization. Traditional cationic carriers cannot adequately meet the need for clinical application of siRNA. We herein report a dual-functional liposome containing a cholesterol derivative of metformin, i.e., LipoMET, which takes advantage of the fusogenic activity as well as intrinsic tumor apoptosis inducing ability of biguanide moiety to achieve a combinational anti-oncogenic effect...
March 5, 2017: Molecular Therapy: the Journal of the American Society of Gene Therapy
https://www.readbyqxmd.com/read/28272873/a-ph-responsive-detachable-peg-shielding-strategy-for-gene-delivery-system-in-cancer-therapy
#14
Xiuwen Guan, Zhaopei Guo, Tinghong Wang, Lin Lin, Jie Chen, Huayu Tian, Xuesi Chen
In this study, a pH-responsive detachable polyethylene glycol (PEG) shielding strategy was designed for gene delivery in cancer therapy. Polyethylenimine/DNA complex (PEI/DNA) was in situ shielded by aldehyde group-modified PEG derivatives. The aldehyde groups of PEG could react with the amino groups of PEI by Schiff base reaction. The Schiff base bond was stable in neutral pH but labile in slightly acidic pH, which made the PEG sheddable in tumors. PEG-coated nanoparticles (NPs) had distinct advantages compared to their mPEG counterpart, possessing decreased zeta potential, more compressed size, and enhanced stability...
March 20, 2017: Biomacromolecules
https://www.readbyqxmd.com/read/28272780/microfluidic-encapsulation-of-prickly-zinc-doped-copper-oxide-nanoparticles-with-vd1142-modified-spermine-acetalated-dextran-for-efficient-cancer-therapy
#15
Hongbo Zhang, Dongfei Liu, Liang Wang, Zehua Liu, Runrun Wu, Agne Janoniene, Ming Ma, Guoqing Pan, Lina Baranauskiene, Linlin Zhang, Wenguo Cui, Vilma Petrikaite, Daumantas Matulis, Hongxia Zhao, Jianming Pan, Hélder A Santos
Structural features of nanoparticles have recently been explored for different types of applications. To explore specific particles as nanomedicine and physically destroy cancer is interesting, which might avoid many obstacles in cancer treatment, for example, drug resistance. However, one key element and technical challenge of those systems is to selectively target them to cancer cells. As a proof-of-concept, Prickly zinc-doped copper oxide (Zn-CuO) nanoparticles (Prickly NPs) have been synthesized, and subsequently encapsulated in a pH-responsive polymer; and the surface has been modified with a novel synthesized ligand, 3-(cyclooctylamino)-2,5,6-trifluoro-4-[(2-hydroxyethyl)sulfonyl] benzenesulfonamide (VD1142)...
March 8, 2017: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/28272671/hodgkin-lymphoma-in-a-case-of-chronic-myeloid-leukemia-treated-with-tyrosine-kinase-inhibitors
#16
Smeeta Gajendra, Archana Sharma, Rashi Sharma, Sunil Kumar Gupta, Nitin Sood, Ritesh Sachdev
Chronic myeloid leukemia (CML) is characterized by increased and unregulated proliferation of granulocytic lineage in the bone marrow and presence of these immature myeloid cells in the peripheral blood with presence of Philadelphia (Ph) chromosome. Tyrosine kinase inhibitors are the most important drugs in the CML therapy and provide long disease-free survival. Due to the increased survival of CML patients with continual administration of these drugs, the chance of development of secondary malignancies may increase...
February 4, 2017: Türk Patoloji Dergisi
https://www.readbyqxmd.com/read/28272412/multifunctional-nanographene-oxide-for-targeted-gene-mediated-thermochemotherapy-of-drug-resistant-tumour
#17
Yiping Zeng, Zhangyou Yang, Hong Li, Yuhui Hao, Cong Liu, Lin Zhu, Jing Liu, Binghui Lu, Rong Li
Drug resistance remains a major challenge for anticancer treatment, and one of the major mechanisms of drug resistance is the overexpression of drug efflux transporters in cancer. A new approach for defeating drug resistance is the use of a co-delivery strategy that utilizes small interfering RNA (siRNA) to silence the expression of efflux transporters together with a suitable anticancer drug for drug-resistant cells. In this work, multifunctional graphene capable of integrating multiple functions in one system was employed as a novel co-delivery system for siRNA and doxorubicin (Dox), as well as for the controlled release of intracellular pH-triggered and heat-triggered Dox...
March 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28258315/impact-of-low-level-laser-therapy-on-hyposalivation-salivary-ph-and-quality-of-life-in-head-and-neck-cancer-patients-post-radiotherapy
#18
Luiz Felipe Palma, Fernanda Aurora Stabile Gonnelli, Marcelo Marcucci, Rodrigo Souza Dias, Adelmo José Giordani, Roberto Araújo Segreto, Helena Regina Comodo Segreto
Late effects of radiotherapy for head and neck cancer treatment have been increasingly investigated due to its impact on patients' quality of life. The purpose of this study was to evaluate the effect of low-level laser therapy on hyposalivation, low salivary pH, and quality of life in head and neck cancer patients post-radiotherapy. Twenty-nine patients with radiation-induced xerostomia received laser sessions twice a week, during 3 months (24 sessions). For this, a continuous wave Indium-Gallium-Aluminium-Phosphorus diode laser device was used punctually on the major salivary glands (808 nm, 0...
March 3, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28255359/targeting-and-regulating-of-an-oncogene-via-nanovector-delivery-of-microrna-using-patient-derived-xenografts
#19
Shuyang Sun, Yilong Wang, Rong Zhou, Zicheng Deng, Yong Han, Xiao Han, Wenjie Tao, Zi Yang, Chaoji Shi, Duo Hong, Jiang Li, Donglu Shi, Zhiyuan Zhang
In precision cancer nanomedicine, the key is to identify the oncogenes that are responsible for tumorigenesis, based on which these genetic drivers can be each specifically regulated by a nanovector-directed, oncogene-targeted microRNA (miRNA) for tumor suppression. Fibroblast Growth Factor Receptor 3 (FGFR3) is such an oncogene. The molecular tumor-subtype harboring FGFR3 genomic alteration has been identified via genomic sequencing and referred to as the FGFR3-driven tumors. This genomics-based tumor classification provides further rationale for the development of the FGFR3-targeted miRNA replacement therapy in treating patients with FGFR3 gene abnormity...
2017: Theranostics
https://www.readbyqxmd.com/read/28255342/dual-targeted-and-ph-sensitive-doxorubicin-prodrug-microbubble-complex-with-ultrasound-for-tumor-treatment
#20
Wanxian Luo, Ge Wen, Li Yang, Jiao Tang, Jianguo Wang, Jihui Wang, Shiyu Zhang, Li Zhang, Fei Ma, Liling Xiao, Ying Wang, Yingjia Li
In this study, we investigated the potential of a dual-targeted pH-sensitive doxorubicin prodrug-microbubble complex (DPMC) in ultrasound (US)-assisted antitumor therapy. The doxorubicin prodrug (DP) consists of a succinylated-heparin carrier conjugated with doxorubicin (DOX) via hydrazone linkage and decorated with dual targeting ligands, folate and cRGD peptide. Combination of microbubble (MB) and DP, generated via avidin-biotin binding, promoted intracellular accumulation and improved therapeutic efficiency assisted by US cavitation and sonoporation...
2017: Theranostics
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