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https://www.readbyqxmd.com/read/29346736/light-activatable-red-blood-cell-membrane-camouflaged-dimeric-prodrug-nanoparticles-for-synergistic-photodynamic-chemotherapy
#1
Qing Pei, Xiuli Hu, Xiaohua Zheng, Shi Liu, Yawei Li, Xiabin Jing, Zhigang Xie
Biomimetic approach offers numerous opportunities to design therapeutic platforms with enhanced antitumor performance and biocompatibility. Herein we report a novel red blood cell membrane-camouflaged nanoparticle (RBC(M(TPC-PTX))) for synergistic chemo- and photodynamic therapy (PDT). Specifically, the inner core is mainly constructed by reactive oxygen species (ROS)-responsive PTX dimer (PTX2-TK) and photosensitizer 5,10,15,20-tetraphenylchlorin (TPC). In vitro experiments show that the prepared RBC(M(TPC-PTX)) is readily taken up into endosomes...
January 18, 2018: ACS Nano
https://www.readbyqxmd.com/read/29345749/self-production-of-oxygen-system-cao2-mno2-pda-mb-for-the-photodynamic-therapy-research-and-switch-control-tumor-cell-imaging
#2
Chenhui Ji, Zhongzhong Lu, Yonghui Xu, Beibei Shen, Shiyong Yu, Dan Shi
Photodynamic therapy (PDT) holds promise in biochemical study and tumor treatment. A novel multifunctional nanosystem CaO2 /MnO2 @polydopamine (PDA)-methylene blue (MB) nanosheet (CMP-MB) was designed. CaO2 nanoparticles were encapsulated by MnO2 nanosheet, and then PDA was coated on the surface of CaO2 /MnO2 nanosheets, which could adsorb photosensitizer MB through hydrophobic interaction or π-π stacking. In this nanosystem, CaO2 /MnO2 had the ability of self-production of oxygen, which solved the problem of tumor hypoxia largely...
January 18, 2018: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/29345737/present-status-and-future-perspective-of-peptide-based-vaccine-therapy-for-urological-cancer
#3
REVIEW
Wataru Obara, Mitsugu Kanehira, Toyomasa Katagiri, Renpei Kato, Yoichiro Kato, Ryo Takata
The use of peptide-based vaccines as therapeutics aims to elicit immune responses through antigenic epitopes derived from tumor antigens. Peptide-based vaccines are easily synthesized and the lack of significant side effects when administered in-vivo. Peptide-based vaccine therapy against several cancers including urological cancers had made progress for several decades, but there is no approval peptide vaccine all over the world. Peptides vaccines were also shown to induce a high frequency of immune response in patients who were accompanied by clinical efficacy...
January 18, 2018: Cancer Science
https://www.readbyqxmd.com/read/29345720/effects-of-nicotine-administration-in-rats-on-mmp2-and-vegf-levels-in-periodontal-membrane
#4
Buşra Deveci, Buket Ayna, İbrahim Halil Tacir, Engin Deveci, Mehmet Cudi Tuncer, Ayşegül Pala
Nicotine is associated with increased incidence of periodontal disease and poor response to therapy. This article aimed at identifying the expression of Matrix metalloproteinases-2 (MMP2) and Vascular endothelial growth factor (VEGF) proteins on extracellular matrix, fibrous distribution and angiogenetic development in periodontitis caused by nicotine effects on periodontal membrane. In this experimental study, the groups were divided into nicotine and control groups. While the nicotine groups in rats (n=6) were administered 2mg/kg Nicotine sulphate for 28 days, the control group in rats (n=6) were only administered 1,5 ml physiologic saline solution subcutaneously for 28 days...
January 18, 2018: Folia Morphologica (Warsz)
https://www.readbyqxmd.com/read/29345434/two-photon-excited-silica-and-organosilica-nanoparticles-for-spatiotemporal-cancer-treatment
#5
REVIEW
Jonas G Croissant, Jeffrey I Zink, Laurence Raehm, Jean-Olivier Durand
Coherent two-photon-excited (TPE) therapy in the near-infrared (NIR) provides safer cancer treatments than current therapies lacking spatial and temporal selectivities because it is characterized by a 3D spatial resolution of 1 µm3 and very low scattering. In this review, the principle of TPE and its significance in combination with organosilica nanoparticles (NPs) are introduced and then studies involving the design of pioneering TPE-NIR organosilica nanomaterials are discussed for bioimaging, drug delivery, and photodynamic therapy...
January 18, 2018: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/29345198/fibrin-turnover-and-organization-of-pleural-injury-bench-to-bedside
#6
Andrey A Komissarov, Najib M Rahman, Yc Gary Lee, Galina Florova, Sreerama Shetty, Richard Idell, Mitsuo Ikebe, Kumuda Das, Torry A Tucker, Steven Idell
Recent studies have shed new light on the role of the fibrinolytic system in the pathogenesis of pleural organization, including mechanisms by which the system regulates mesenchymal transition of mesothelial cells and how that process affects outcomes of pleural injury. The key contribution of plasminogen activator inhibitor-1 to the outcomes of pleural injury is now better understood as is its role in the regulation of intrapleural fibrinolytic therapy. In addition, mechanisms by which fibrinolysins are processed after intrapleural administration have now been elucidated, informing new candidate diagnostics and therapeutics for pleural loculation and failed drainage...
January 18, 2018: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/29344358/the-global-problem-of-childhood-diarrhoeal-diseases-emerging-strategies-in-prevention-and-management
#7
REVIEW
Margaret Mokomane, Ishmael Kasvosve, Emilia de Melo, Jeffrey M Pernica, David M Goldfarb
Acute diarrhoeal diseases remain a leading cause of global morbidity and mortality particularly among young children in resource-limited countries. Recent large studies utilizing case-control design, prospective sampling and more sensitive and broad diagnostic techniques have shed light on particular pathogens of importance and highlighted the previously under recognized impact of these infections on post-acute illness mortality and growth. Vaccination, particularly against rotavirus, has emerged as a key effective means of preventing significant morbidity and mortality from childhood diarrhoeal disease...
January 2018: Therapeutic Advances in Infectious Disease
https://www.readbyqxmd.com/read/29344312/an-endogenous-vaccine-based-on-fluorophores-and-multivalent-immunoadjuvants-regulates-tumor-micro-environment-for-synergistic-photothermal-and-immunotherapy
#8
Ling Li, Suleixin Yang, Linjiang Song, Yan Zeng, Tao He, Ning Wang, Chuan Yu, Tao Yin, Li Liu, Xiawei Wei, Qinjie Wu, Yuquan Wei, Li Yang, Changyang Gong
Recently, near-infrared (NIR) light-based photothermal therapy (PTT) has been widely applied in cancer treatment. However, in most cases, the tissue penetration depth of NIR light is not sufficient and thus photothermal therapy is unable to completely eradicate deep, seated tumors inevitably leading to recurrence of the tumor. Due to this significant limitation of NIR, improved therapeutic strategies are urgently needed. Methods: We developed an endogenous vaccine based on a novel nanoparticle platform for combinatorial photothermal ablation and immunotherapy...
2018: Theranostics
https://www.readbyqxmd.com/read/29344297/mesoporous-carbon-nanospheres-as-a-multifunctional-carrier-for-cancer-theranostics
#9
Libo Zhou, Ying Jing, Yubin Liu, Zhihe Liu, Duyang Gao, Haobin Chen, Weiye Song, Tao Wang, Xiaofeng Fang, Weiping Qin, Zhen Yuan, Sheng Dai, Zhen-An Qiao, Changfeng Wu
Optical nanomaterials with intense absorption in near-infrared (NIR) region hold great promise for biomedical applications such as photothermal therapy (PTT) and photoacoustic imaging (PAI). In this work, we report mesoporous carbon nanospheres (Meso-CNs) with broadband and intense absorption in the UV-Vis-NIR region (300-1400 nm) and explore their potential as a multifunctional platform for photoacoustic imaging and chemo-photothermal therapy. Methods: Meso-CNs were prepared by a "silica-assisted" synthesis strategy and characterized by transmission electron microscope and optical spectroscopy...
2018: Theranostics
https://www.readbyqxmd.com/read/29344278/potent-peptide-conjugated-silicon-phthalocyanines-for-tumor-photodynamic-therapy
#10
Qian Liu, Mingpei Pang, Sihai Tan, Jin Wang, Qingle Chen, Kai Wang, Wenjie Wu, Zhangyong Hong
Phthalocyanines (Pcs) are a group of promising photosensitizers for use in photodynamic therapy (PDT). However, their extremely low solubility and their strong tendency to aggregate in aqueous solution greatly restrict their application. Conjugation of Pc macrocycles with peptide ligands could be a very useful strategy to optimize the physical properties of Pcs not only by increasing their water solubility and reducing their aggregation but also by endowing the conjugates with a tumor-targeting capability. To develop highly potent photosensitizers for tumor PDT, we prepared new peptide-conjugated photosensitizers using silicon Pc (SiPc), which has much higher photodynamic activity than zinc Pcs, as the light activation moiety and the cRGDfK peptide (or simply cRGD) as the peptide moiety...
2018: Journal of Cancer
https://www.readbyqxmd.com/read/29343934/a-comparative-study-on-the-effects-of-vintage-nonpharmacological-techniques-in-reducing-myopia-bates-eye-exercise-therapy-vs-trataka-yoga-kriya
#11
Komal Krishna Tiwari, Rahul Shaik, B Aparna, Rajesh Brundavanam
Background: Human eye captures light rays as they come and fall on the retina and convert them into an image. However, in myopia, light rays fall in front of retina, causing blurring of image. Correction of this is generally done using correcting devices such as corrective glasses and contact lenses. Existence of some alternative therapies is also noticed in literature. Aim: To compare the effects of Bates eye exercises and Trataka Yoga Kriya on myopia. Materials and Methodology: Ethical clearance was obtained from the institution, and informed consent was taken from participants...
January 2018: International Journal of Yoga
https://www.readbyqxmd.com/read/29341583/tumor-catalytic-photothermal-therapy-with-yolk-shell-gold-carbon-nanozymes
#12
Lei Fan, Xiangdong Xu, Chunhua Zhu, Jie Han, Lizeng Gao, Juqun Xi, Rong Guo
Nanozymes, as a new generation of artificial enzymes, offer great opportunities in biomedical engineering and disease treatment. Synergizing the multiple intrinsic functions of nanozymes can improve their performance in biological systems. Here, we report a novel nanozyme with yolk-shell structure fabricated by combining a single gold nanoparticle core with a porous hollow carbon shell nanospheres (Au@HCNs). Au@HCNs exhibited enzyme-like activities similar to horseradish peroxidase and oxidase under an acidic environment, showing the ability of ROS generation...
January 17, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29341341/prediction-of-activation-patterns-preceding-hallucinations-in-patients-with-schizophrenia-using-machine-learning-with-structured-sparsity
#13
Amicie de Pierrefeu, Thomas Fovet, Fouad Hadj-Selem, Tommy Löfstedt, Philippe Ciuciu, Stephanie Lefebvre, Pierre Thomas, Renaud Lopes, Renaud Jardri, Edouard Duchesnay
Despite significant progress in the field, the detection of fMRI signal changes during hallucinatory events remains difficult and time-consuming. This article first proposes a machine-learning algorithm to automatically identify resting-state fMRI periods that precede hallucinations versus periods that do not. When applied to whole-brain fMRI data, state-of-the-art classification methods, such as support vector machines (SVM), yield dense solutions that are difficult to interpret. We proposed to extend the existing sparse classification methods by taking the spatial structure of brain images into account with structured sparsity using the total variation penalty...
January 16, 2018: Human Brain Mapping
https://www.readbyqxmd.com/read/29340992/prospective-comparative-study-of-laparoscopic-narrow-band-imaging-nbi-versus-standard-imaging-in-gynecologic-oncology
#14
Alessia Aloisi, Yukio Sonoda, Ginger J Gardner, Kay J Park, Sarah L Elliott, Qin C Zhou, Alexia Iasonos, Nadeem R Abu-Rustum
BACKGROUND: Narrow band imaging (NBI) is an optic filtration enhancement for endoscopy that uses two wavelengths of light (415 and 540 nm) to highlight superficial microvascular patterns. It has been successfully utilized to improve identification of lesions with abnormal vasculature, which is associated with endometriosis and endometrial cancer. Case studies suggest it may also facilitate surgical staging of gynecologic cancer, which is critical in determining appropriate adjuvant therapies...
January 16, 2018: Annals of Surgical Oncology
https://www.readbyqxmd.com/read/29340854/therapeutic-efficacy-and-safety-of-a-1927-nm-fractionated-thulium-laser-on-pattern-hair-loss-an-evaluator-blinded-split-scalp-study
#15
Sung Bin Cho, Boncheol Leo Goo, Zhenlong Zheng, Kwang Ho Yoo, Jin-Soo Kang, Heesu Kim
Laser- or light-assisted therapies have been used to improve the perifollicular environment by upregulating the expression of growth factors and signaling molecules for hair restoration. The aim of our study was to preclinically and clinically evaluate the therapeutic efficacy and safety of a 1927-nm fractionated thulium laser on pattern hair loss (PHL). An in vivo hairless mouse study and an in vivo human skin environmental scanning electron microscopy (ESEM) study were performed with different power and energy settings...
January 16, 2018: Lasers in Medical Science
https://www.readbyqxmd.com/read/29339529/management-of-endocrine-disease-atypical-femoral-fractures-risks-and-benefits-of-long-term-treatment-of-osteoporosis-with-anti-resorptive-therapy
#16
Robert Adler
Modern osteoporosis treatment began in the mid-1990's with the approval of amino-bisphosphonates, anti-resorptive agents that have been shown to decrease osteoporotic fracture risk by about half. In 2005, the first cases of atypical femoral fractures (AFF), occurring in the shaft of the femur, were reported. Since then, more cases have been found, leading to great concern among patients and a dramatic decrease in bisphosphonate prescribing. The pathogenesis and incidence of AFF are reviewed herein. Management and an approach to prevention or early detection of AFF are also provided...
January 16, 2018: European Journal of Endocrinology
https://www.readbyqxmd.com/read/29339061/dose-dependent-photochemical-photothermal-toxicity-of-indocyanine-green-based-therapy-on-three-different-cancer-cell-lines
#17
Mustafa Kemal Ruhi, Ayşe Ak Can, Murat Gülsoy
The Food and Drug Administration-approved Indocyanine Green can be used as a photosensitizer to kill cancer cells selectively. Although indocyanine green is advantageous as a photosensitizer in terms of strong absorption in the near-infrared region, indocyanine green-based cancer treatment is still not approved as a clinical method. Some reasons for this are aggregation at high concentrations, rapid clearance of the photosensitizer from the body, low singlet oxygen quantum yield, and the uncertainty concerning its action mechanism...
January 12, 2018: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/29338718/a-live-cell-assay-of-gpcr-coupling-allows-identification-of-optogenetic-tools-for-controlling-go-and-gi-signaling
#18
Edward R Ballister, Jessica Rodgers, Franck Martial, Robert J Lucas
BACKGROUND: Animal opsins are light-sensitive G-protein-coupled receptors (GPCRs) that enable optogenetic control over the major heterotrimeric G-protein signaling pathways in animal cells. As such, opsins have potential applications in both biomedical research and therapy. Selecting the opsin with the best balance of activity and selectivity for a given application requires knowing their ability to couple to a full range of relevant Gα subunits. We present the GsX assay, a set of tools based on chimeric Gs subunits that transduce coupling of opsins to diverse G proteins into increases in cAMP levels,  measured with a real-time reporter in living cells...
January 16, 2018: BMC Biology
https://www.readbyqxmd.com/read/29338444/adp53-gendicine-12-years-in-clinic-the-first-approved-gene-therapy-product-for-cancer
#19
Wei-Wei Zhang, Jianglong Li, Dinggang Li, Jiliang Liu, Xiuqin Li, Wei Li, Xiaolong Xu, Michael J Zhang, Lois Chandler, Hong Lin, Aiguo Hu, Wei Xu, Dominic Man-Kit Lam
Gendicine (Recombinant Human p53 Adenovirus, AdRSV-p53), developed by Shenzhen SiBiono GeneTech Company, was approved by CFDA in 2003. It has been used in clinical oncology for 12 years since it entered the market in 2004. As the first-in-class product for cancer gene therapy, Gendicine met its expectation and demonstrated with ample clinical data that it is safe and effective for treating cancer. SiBiono manufactured 41 batches in compliant with CFDA QC/QA requirements. Total 169,571 vials (1.0x1012 vector particles per vial) were used in more than 50,000 patients, among them about 5,000 were international form over 50 nations outside China...
January 16, 2018: Human Gene Therapy
https://www.readbyqxmd.com/read/29337870/glioblastoma-under-siege-an-overview-of-current-therapeutic-strategies
#20
REVIEW
Mayra Paolillo, Cinzia Boselli, Sergio Schinelli
Glioblastoma is known to be one of the most lethal and untreatable human tumors. Surgery and radiotherapy in combination with classical alkylating agents such as temozolomide offer little hope to escape a poor prognosis. For these reasons, enormous efforts are currently devoted to refine in vivo and in vitro models with the specific goal of finding new molecular aberrant pathways, suitable to be targeted by a variety of therapeutic approaches, including novel pharmaceutical formulations and immunotherapy strategies...
January 16, 2018: Brain Sciences
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