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https://www.readbyqxmd.com/read/30077652/antimicrobial-photodynamic-therapy-assessment-of-three-indocyanine-green-loaded-metal-organic-frameworks-against-enterococcus-faecalis
#1
Azadeh Golmohamadpour, Bahram Bahramian, Mehdi Khoobi, Maryam Pourhajibagher, Hamid Reza Barikani, Abbas Bahador
BACKGROUND: Antimicrobial photodynamic therapy (aPDT) has been emerged as one of the promising non-invasive adjuvant for the treatment of endodontic infections. The key part of this technique is application of an optimized nontoxic photosensitizer (PS), like indocyanine green (ICG) activated by light source destroying bacterial contaminants. Notwithstanding all featured properties of ICG, this PS mainly suffers from the lack of stability and concentration-dependent aggregation. A variety of nanomaterials (NMs) has been widely exploited to improve the stability and efficiency of ICG...
August 2, 2018: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/30058139/porous-gold-nanoshells-on-functional-nh-2-mofs-facile-synthesis-and-designable-platforms-for-cancer-multiple-therapy
#2
Chuang Liu, Lijia Luo, Leyong Zeng, Jie Xing, Yuanzhi Xia, Shan Sun, Luyun Zhang, Zhe Yu, Junlie Yao, Zhangsen Yu, Ozioma Udochukwu Akakuru, Madiha Saeed, Aiguo Wu
AuroShell nanoparticles (sealed gold nanoshell on silica) are the only inorganic materials that are approved for clinical trial for photothermal ablation of solid tumors. Based on that, porous gold nanoshell structures are thus critical for cancer multiple theranostics in the future owing to their inherent cargo-loading ability. Nevertheless, adjusting the diverse experimental parameters of the reported procedures to obtain porous gold nanoshell structures is challenging. Herein, a series of amino-functionalized porous metal-organic frameworks (NH2 -MOFs) nanoparticles are uncovered as superior templates for porous gold nanoshell deposition (NH2 -MOFs@Aushell ) by means of a more facile and general one-step method, which combines the enriched functionalities of NH2 -MOFs with those of porous gold nanoshells...
July 29, 2018: Small
https://www.readbyqxmd.com/read/30045804/-advances-in-antibiotic-therapy-for-acute-pancreatitis
#3
Xinyue Hu, Lipeng Zhang
Severe acute pancreatitis (SAP) is still with a high incidence and mortality. Early onset is usually non-infectious inflammation caused by systemic inflammatory response syndrome (SIRS), with the further progress into pancreatic necrosis, which is the main cause of death. The occurrence of infection can induce or aggravate multiple organ failure (MOF), leading to death. Therefore, whether early use of antibiotics to prevent the occurrence of pancreatic infection and how to identify early pancreatic infection, how to choose the start of antibiotic therapy is the hot and difficult point of current study...
July 2018: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/29945939/the-use-of-defibrotide-in-blood-and-marrow-transplantation
#4
REVIEW
Paul G Richardson, Enric Carreras, Massimo Iacobelli, Bijan Nejadnik
Hepatic veno-occlusive disease/sinusoidal obstruction syndrome (VOD/SOS) is a potentially life-threatening complication of conditioning during hematopoietic stem cell transplantation (HSCT) or chemotherapy without HSCT, with a historically reported mean incidence of 13.7% post-HSCT. Typical symptoms of VOD/SOS may include hyperbilirubinemia, painful hepatomegaly, weight gain, and ascites. Defibrotide, a polydisperse mixture of predominantly single-stranded polydeoxyribonucleotides, is currently the only therapy approved to treat hepatic VOD/SOS with pulmonary/renal dysfunction (ie, multiorgan dysfunction/multiorgan failure [MOD/MOF]) following HSCT in the United States and to treat severe hepatic VOD/SOS post-HSCT in the European Union...
June 26, 2018: Blood Advances
https://www.readbyqxmd.com/read/29938191/in-situ-one-pot-synthesis-of-mof-polydopamine-hybrid-nanogels-with-enhanced-photothermal-effect-for-targeted-cancer-therapy
#5
Dongdong Wang, Huihui Wu, Jiajia Zhou, Pengping Xu, Changlai Wang, Ruohong Shi, Haibao Wang, Hui Wang, Zhen Guo, Qianwang Chen
Herein, a simple one-pot way is designed to prepare a type of multifunctional metal-organic framework (MOF)-based hybrid nanogels by in situ hybridization of dopamine monomer in the skeleton of MnCo. The resultant hybrid nanoparticles (named as MCP) show enhanced photothermal conversion efficiency in comparison with pure polydopamine or MnCo nanoparticles (NPs) synthesized under a similar method and, therefore, show great potential for photothermal therapy (PTT) in vivo. The MCP NPs are expected to possess T 1 positive magnetic resonance imaging ability due to the high-spin Mn-N6 ( S = 5/2) in the skeleton of MnCo...
June 2018: Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
https://www.readbyqxmd.com/read/29913389/biomimetic-o-2-evolving-metal-organic-framework-nanoplatform-for-highly-efficient-photodynamic-therapy-against-hypoxic-tumor
#6
Shutao Gao, Pengli Zheng, Zhenhua Li, Xiaochen Feng, Weixiao Yan, Shizhu Chen, Weisheng Guo, Dandan Liu, Xinjian Yang, Shuxiang Wang, Xing-Jie Liang, Jinchao Zhang
Improving the supply of O2 and the circulation lifetime of photosensitizers for photodynamic therapy (PDT) in vivo would be a promising approach to eliminate hypoxic tumors. Herein, by taking advantage of the significant gas-adsorption capability of metal-organic frameworks (MOFs), a biomimetic O2 -evolving photodynamic therapy (PDT) nanoplatform with long circulating properties was fabricated. Zirconium (IV)-based MOF (UiO-66) was used as a vehicle for O2 storing, then conjugated with indocyanine green (ICG) by coordination reaction, and further coated with red blood cell (RBC) membranes...
September 2018: Biomaterials
https://www.readbyqxmd.com/read/29877692/dual-stimulus-triggered-programmable-drug-release-and-luminescent-ratiometric-ph-sensing-from-chemically-stable-biocompatible-zinc-metal-organic-framework
#7
Kai Xing, Ruiqing Fan, Fengyou Wang, Huan Nie, Xi Du, Shuang Gai, Ping Wang, Yulin Yang
Metal-organic frameworks (MOFs), as drug delivery carriers, with high loading capacity and controllable release behavior can provide a more efficacious therapy in cancer treatments. In our work, a novel biocompatible zinc MOF Zn-cpon-1 with the (3,6)-connected rtl 3D topological network was designed and synthesized via employing ClO4 - anion as template. The optically and chemically stable Zn-cpon-1 could be verified as a pH-responsive dual-emission platform and excellent drug delivery carrier with higher 5-fluorouracil (5-FU) (44...
July 5, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29851158/intelligent-metal-carbonyl-metal-organic-framework-nanocomplex-for-fluorescent-traceable-h-2-o-2-triggered-co-delivery
#8
Zhaokui Jin, Penghe Zhao, Junheng Zhang, Tian Yang, Gaoxin Zhou, Daohong Zhang, Tianfu Wang, Qianjun He
The recognized therapeutic benefits from carbon monoxide (CO) have caused booming attention to develop a CO therapy for various major diseases, such as cancer. However, the controlled release of CO gas and the monitoring of the CO release are vitally important to the on-demand CO administration for a safe and efficient therapy, but greatly challenging. In this work, a new CO-releasing nanocomplex was constructed by the adsorption and coordination of manganese carbonyl ([MnBr(CO)5 ], abbreviated as MnCO) with a Ti-based metal-organic framework (Ti-MOF) to realize an intratumoral H2 O2 -triggered CO release and real-time CO release monitoring by fluorescence imaging...
May 31, 2018: Chemistry: a European Journal
https://www.readbyqxmd.com/read/29802962/in-which-patients-does-lumbar-spine-trabecular-bone-score-tbs-have-the-largest-effect
#9
P Martineau, W D Leslie, H Johansson, N C Harvey, E V McCloskey, D Hans, J A Kanis
BACKGROUND: Lumbar spine TBS, a texture index derived from lumbar spine dual-energy x-ray absorptiometry (DXA) images, enhances fracture prediction. No studies to date have studied a broad range of clinical variables to determine which patients might experience the greatest benefit from the use of TBS. METHODS: Using the Manitoba BMD Registry, we identified 37,176 subjects with baseline DXA, FRAX®-based fracture probability, lumbar spine TBS, and minimum 5 years of observation...
August 2018: Bone
https://www.readbyqxmd.com/read/29777389/iron-based-metal-organic-frameworks-as-a-theranostic-carrier-for-local-tuberculosis-therapy
#10
Gabriela Wyszogrodzka, Przemysław Dorożyński, Barbara Gil, Wieslaw J Roth, Maciej Strzempek, Bartosz Marszałek, Władysław P Węglarz, Elżbieta Menaszek, Weronika Strzempek, Piotr Kulinowski
PURPOSE: The purpose of the study was initial evaluation of applicability of metal organic framework (MOF) Fe-MIL-101-NH2 as a theranostic carrier of antituberculous drug in terms of its functionality, i.e. drug loading, drug dissolution, magnetic resonance imaging (MRI) contrast and cytotoxic safety. METHODS: Fe-MIL-101-NH2 was characterized using X-ray powder diffraction, FTIR spectrometry and scanning electron microscopy. The particle size analysis was determined using laser diffraction...
May 18, 2018: Pharmaceutical Research
https://www.readbyqxmd.com/read/29736519/advances-in-the-integration-of-quantum-dots-with-various-nanomaterials-for-biomedical-and-environmental-applications
#11
Lin Cui, Chen-Chen Li, Bo Tang, Chun-Yang Zhang
Quantum dots (QDs) are semiconductor nanocrystals with distinct characteristics of high brightness, large Stokes shift and broad absorption spectra, large molar extinction coefficients, high quantum yield, good photostability and long fluorescence lifetime. The QDs have replaced the conventional fluorophores with wide applications in immunoassays, microarrays, fluorescence imaging, targeted drug delivery and therapy. The integration of QDs with various nanomaterials such as noble metal nanoparticles, carbon allotropes, upconversion nanoparticles (UCNPs), metal oxides and metal-organic frameworks (MOFs) brings new opportunities and possibilities in nanoscience and nanotechnology...
May 29, 2018: Analyst
https://www.readbyqxmd.com/read/29674658/high-dose-carboplatin-etoposide-melphalan-increases-risk-of-thrombotic-microangiopathy-and-organ-injury-after-autologous-stem-cell-transplantation-in-patients-with-neuroblastoma
#12
Sonata Jodele, Christopher E Dandoy, Kasiani Myers, Gregory Wallace, Adam Lane, Ashley Teusink-Cross, Brian Weiss, Stella M Davies
Transplant-associated thrombotic microangiopathy (TA-TMA) is an increasingly recognized complication of hematopoietic cell transplant that can result in multi-organ failure (MOF). Patients undergoing high-dose chemotherapy with autologous stem cell transplant (aHCT) for neuroblastoma require good organ function to receive post-transplant radiation and immunotherapy. We examined TA-TMA incidence and transplant outcomes in patients with neuroblastoma receiving different transplant preparative regimens. Sixty patients underwent aHCT using high-dose chemotherapy: 41 patients received carboplatin/etoposide/melphalan (CEM), 13 patients busulfan/melphalan (Bu/Mel) and six patients received tandem transplant (cyclophosphamide/thiotepa and CEM)...
April 19, 2018: Bone Marrow Transplantation
https://www.readbyqxmd.com/read/29672956/metal-organic-framework-derived-carbon-nanostructure-augmented-sonodynamic-cancer-therapy
#13
Xueting Pan, Lixin Bai, Hui Wang, Qingyuan Wu, Hongyu Wang, Shuang Liu, Bolong Xu, Xinghua Shi, Huiyu Liu
Sonodynamic therapy (SDT) can overcome the critical issue of depth-penetration barrier of photo-triggered therapeutic modalities. However, the discovery of sonosensitizers with high sonosensitization efficacy and good stability is still a significant challenge. In this study, the great potential of a metal-organic-framework (MOF)-derived carbon nanostructure that contains porphyrin-like metal centers (PMCS) to act as an excellent sonosensitizer is identified. Excitingly, the superior sonosensitization effect of PMCS is believed to be closely linked to the porphyrin-like macrocycle in MOF-derived nanostructure in comparison to amorphous carbon nanospheres, due to their large highest occupied molecular orbital (HOMO)-lowest unoccupied molecular orbital (LUMO) gap for high reactive oxygen species (ROS) production...
June 2018: Advanced Materials
https://www.readbyqxmd.com/read/29664624/surface-decorated-porphyrinic-nanoscale-metal-organic-framework-for-photodynamic-therapy
#14
Jing-Lan Kan, Yuan Jiang, Anqi Xue, Ying-Hao Yu, Quanbo Wang, Yang Zhou, Yu-Bin Dong
Nanocrystallization of organic molecular photosensitizers (PSs) by means of NMOF platforms has been demonstrated to be a promising approach to build up highly efficient PDT therapeutics. We report herein a new UiO-66 type of NMOF-based PS (UiO-66-TPP-SH), which is generated from UiO-66 NMOF and S-ethylthiol ester monosubstituted metal free porphyrin (TPP-SH) via a facile postsynthetic approach under mild conditions. The obtained NMOF (size less than 150 nm) with surface-decorated porphyrinic PS can not only retain MOF crystallinity, structural feature, and size, but also exhibit highly efficient singlet oxygen generation...
May 7, 2018: Inorganic Chemistry
https://www.readbyqxmd.com/read/29584395/%C3%AF-extended-benzoporphyrin-based-metal-organic-framework-for-inhibition-of-tumor-metastasis
#15
Jin-Yue Zeng, Mei-Zhen Zou, Mingkang Zhang, Xiao-Shuang Wang, Xuan Zeng, Hengjiang Cong, Xian-Zheng Zhang
We report on the benzoporphyrin-based metal-organic framework (TBP-MOF), with 10-connected Zr6 cluster and much improved photophysical properties over the traditional porphyrin-based MOFs. It was found that TBP-MOF exhibited red-shifted absorption bands and strong near-infrared luminescence for bioimaging, whereas the π-extended benzoporphyrin-based linkers of TBP-MOF facilitated 1 O2 generation to enhance O2 -dependent photodynamic therapy (PDT). It was demonstrated that poly(ethylene glycol)-modified nanoscale TBP-MOF (TBP-nMOF) can be used as an effective PDT agent under hypoxic tumor microenvironment...
May 22, 2018: ACS Nano
https://www.readbyqxmd.com/read/29572992/therapeutic-nanoreactors-as-in-vivo-nanoplatforms-for-cancer-therapy
#16
Jean Felix Mukerabigwi, Zhishen Ge, Kazunori Kataoka
Therapeutic nanoreactors have been proposed as nanoplatforms to treat diseases through in situ production of therapeutic agents. When this treatment strategy is applied in cancer therapy, it can efficiently in situ produce the highly toxic anticancer drugs from low-toxic prodrugs or some biomolecules in tumor tissues, which can maximize the therapeutic efficacy with a significantly low systemic toxicity. An ideal therapeutic nanoreactor can provide the reaction space, protect the loaded fragile catalysts, target to the desired pathological site, and be selectively activated...
March 23, 2018: Chemistry: a European Journal
https://www.readbyqxmd.com/read/29560986/size-and-surface-controllable-metal-organic-frameworks-mofs-for-fluorescence-imaging-and-cancer-therapy
#17
Xuechuan Gao, Ruixue Cui, Guanfeng Ji, Zhiliang Liu
Benefiting from their porous structures, metal-organic frameworks (MOFs) have attracted intensive attention for use in drug release. However, the controllable synthesis of MOFs with proper particle sizes is still very challenging, which largely limits its applications. Here, UIO-66-NH2 with controlled particle sizes in the range of 20-200 nm has been achieved successfully. The amine on UIO-66-NH2 is demonstrated for the feasible post-modifying of UIO-66-NH2 to obtain multifunctional MOFs, overcoming the limitations of functional simplicity and broadening the range of applications...
March 29, 2018: Nanoscale
https://www.readbyqxmd.com/read/29536600/enzyme-mof-nanoreactor-activates-nontoxic-paracetamol-for-cancer-therapy
#18
Xizhen Lian, Yanyan Huang, Yuanyuan Zhu, Yu Fang, Rui Zhao, Elizabeth Joseph, Jialuo Li, Jean-Philippe Pellois, Hong-Cai Zhou
Prodrug activation, by exogenously administered enzymes, for cancer therapy is an approach to achieve better selectivity and less systemic toxicity than conventional chemotherapy. However, the short half-lives of the activating enzymes in the bloodstream has limited its success. Demonstrated here is that a tyrosinase-MOF nanoreactor activates the prodrug paracetamol in cancer cells in a long-lasting manner. By generating reactive oxygen species (ROS) and depleting glutathione (GSH), the product of the enzymatic conversion of paracetamol is toxic to drug-resistant cancer cells...
May 14, 2018: Angewandte Chemie
https://www.readbyqxmd.com/read/29508557/nanoscaled-metal-organic-frameworks-for-biosensing-imaging-and-cancer-therapy
#19
REVIEW
Jingrong Zhou, Gan Tian, Lijuan Zeng, Xueer Song, Xiu-Wu Bian
Owing to the progressive development of metal-organic frameworks (MOFs) synthetic processes and their unique characters associated with the excellent performance-selectable composition, tunable pore scale, large surface area, and good thermal stability, MOFs have captured the interest and the imagination of an increasing number of scientists working in different fields. In the area of biomedical applications, MOFs are especially involved in sensing, molecular imaging, and drug delivery, with strong contributions to the whole nanomedicine area...
May 2018: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/29451722/enhanced-photodynamic-therapy-by-reduced-levels-of-intracellular-glutathione-obtained-by-employing-a-nano-mof-with-cu-ii-as-the-active-center
#20
Wei Zhang, Jun Lu, Xiaonan Gao, Ping Li, Wen Zhang, Yu Ma, Hui Wang, Bo Tang
In photodynamic therapy (PDT), the level of reactive oxygen species (ROS) produced in the cell directly determines the therapeutic effect. Improvement in ROS concentration can be realized by reducing the glutathione (GSH) level or increasing the amount of photosensitizer. However, excessive amounts photosensitizer may cause side effects. Therefore, the development of photosensitizers that reduce GSH levels through synergistically improving ROS concentration in order to strengthen the efficacy of PDT for tumor is important...
April 23, 2018: Angewandte Chemie
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