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Dalong Ni, Dawei Jiang, Emily B Ehlerding, Peng Huang, Weibo Cai
As one of the most biocompatible and well-tolerated inorganic nanomaterials, silica-based nanoparticles (SiNPs) have received extensive attention over the last several decades. Recently, positron emission tomography (PET) imaging of radiolabeled SiNPs has provided a highly sensitive, noninvasive, and quantitative readout of the organ/tissue distribution, pharmacokinetics, and tumor targeting efficiency in vivo, which can greatly expedite the clinical translation of these promising NPs. Encouraged by the successful PET imaging of patients with metastatic melanoma using124 I-labeled ultrasmall SiNPs (known as Cornell dots or C dots) and their approval as an Investigational New Drug (IND) by the United States Food and Drug Administration, different radioisotopes (64 Cu,89 Zr,18 F,68 Ga,124 I, etc...
February 28, 2018: Accounts of Chemical Research
Liying Wang, Minfeng Huo, Yu Chen, Jianlin Shi
Inorganic mesoporous silica-based nanovehicles are highly promising for drug delivery but still suffer from the disadvantages of lacking functionality and poor biodegradability on account of the inert silica framework. Moreover, conventional cancer therapeutics typically employ toxic anticancer drugs or invasive external irradiations, which will inevitably give rise to severe adverse effects and diminished therapeutic outcome. In this work, we report on the iron engineered framework of mesoporous silica nanoparticles (MSNs) to fabricate a nanocatalyst with biodegradable and catalytic framework via a "dissolution-regeneration" strategy (designated as rFeO x -HMSN)...
February 9, 2018: Biomaterials
Bianca Flores, Cara C Schornak, Eric Delpire
The potassium chloride cotransporter, KCC3, is an electroneutral cotransporter expressed in the peripheral and central nervous system. KCC3 is responsible for the efflux of K+ and Cl- in neurons to help maintain cell volume and intracellular chloride levels. A loss-of- function (LOF) of KCC3 causes Hereditary Motor Sensory Neuropathy with Agenesis of the Corpus Callosum (HMSN/ACC) in a population of individuals in the Charlevoix/Lac-Saint-Jean region of Quebec, Canada. A variety of mouse models have been created to understand the physiological and deleterious effects of a KCC3 LOF...
January 20, 2018: Neurochemistry International
Kai F Loewenbrück, Markus Dittrich, Josef Böhm, Jürgen Klingelhöfer, Petra Baum, Jochen Schäfer, Heinz Reichmann, Andreas Hermann, Alexander Storch
PURPOSE: To develop specific diagnostic ultrasound (US) models for hereditary motor and sensory neuropathies (HMSN) in patients with primarily demyelinating or axonal polyneuropathies (PNP) according to standard nerve conduction studies (NCS) criteria. METHODS: Single-centre, examiner-blinded cross-sectional study in acquired PNP (consecutive recruitment strategy) and HMSN patients (convenience sample). Allocation into demyelinating or axonal phenotype via easily applicable NCS criteria...
January 2018: Journal of Neurology
Katarzyna Bienias, Joanna Ścibek, Joanna Cegielska, Jan Kochanowski
Slowly progressive neuromuscular diseases include but are not limited to: facioscapulohumeral muscular dystrophy (FSHD) and limb-girdle muscular dystrophy (LGMD), hereditary motor and sensory neuropathy (HMSN) and spinal muscular atrophy type III (SMA3). The purpose of this study is to present an evaluation of basic and complex activities of daily living in patients suffering from these diseases. The study was conducted on a group of 58 Polish patients: 25 patients with HMSN, 19 with LGMD and FSHD and 14 with SMA3...
October 27, 2017: Neurologia i Neurochirurgia Polska
Benjamin Botsford, Laurel N Vuong, Thomas R Hedges Iii, Carlos E Mendoza-Santiesteban
Varying degrees of optic neuropathy can be seen in patients with Charcot-Marie-Tooth (CMT) disease. To define and characterize the extent of optic neuropathy in patients with CMT2A and CMT1A, two patients from both sub-classifications were evaluated. All patients underwent complete neuro-ophthalmic examinations, and optical coherence (OCT) measurements of the retinal nerve fiber layer (RNFL) and ganglion cell layer complex (GCC) were obtained, along with pattern visual evoked potential (VEP) and pattern electroretinogram (ERG) recordings...
December 2017: Journal of Neurology
Takeshi Yamamotoya, Yusuke Nakatsu, Akifumi Kushiyama, Yasuka Matsunaga, Koji Ueda, Yuki Inoue, Masa-Ki Inoue, Hideyuki Sakoda, Midori Fujishiro, Hiraku Ono, Hiroshi Kiyonari, Hisamitsu Ishihara, Tomoichiro Asano
The Trk-fused gene (TFG) is reportedly involved in the process of COPII-mediated vesicle transport and missense mutations in TFG cause several neurodegenerative diseases including hereditary motor and sensory neuropathy with proximal dominant involvement (HMSN-P). The high coincidence ratio between HMSN-P and diabetes mellitus suggests TFG to have an important role(s) in glucose homeostasis. To examine this possibility, β-cell specific TFG knockout mice (βTFG KO) were generated. Interestingly, βTFG KO displayed marked glucose intolerance with reduced insulin secretion...
October 12, 2017: Scientific Reports
Huiying Xue, Zhaoyang Yu, Yong Liu, Weigang Yuan, Tan Yang, Jia You, Xingxing He, Robert J Lee, Lei Li, Chuanrui Xu
Multidrug resistance (MDR) due to overexpression of P-glycoprotein (P-gp) is a major obstacle that hinders the treatment of hepatocellular carcinoma (HCC). It has been shown that miR-375 inhibits P-gp expression via inhibition of astrocyte elevated gene-1 (AEG-1) expression in HCC, and induces apoptosis in HCC cells by targeting AEG-1 and YAP1. In this study, we prepared lipid-coated hollow mesoporous silica nanoparticles (LH) containing doxorubicin hydrochloride (DOX) and miR-375 (LHD/miR-375) to deliver the two agents into MDR HCC cells in vitro and in vivo...
2017: International Journal of Nanomedicine
Prabukumar Seetharaman, Sathishkumar Gnanasekar, Rajkuberan Chandrasekaran, Gobinath Chandrakasan, Asad Syed, Mohamed S Hodhod, Fuad Ameen, Sivaramakrishnan Sivaperumal
Upon screening for novel and potential biocompounds with larvicidal activities, we successfully isolated hamisonine (HMSN) a limonoid compound from endophytic fungi Penicillium oxalicum LA-1 of Limonia acidissima. The extracted compound structure was elucidated by spectral studies such as UV-vis spectroscopy, thin-layer chromatography, FTIR, LC-ESI-MS, (1)H NMR, and (13)C NMR upon comparing with the spectral data available in the literature. Further, the isolated HMSN was tested against III and IV instar Culex quinquefasciatus larvae...
September 2017: Environmental Science and Pollution Research International
Xin Guo, Nan Guo, Jianwen Zhao, Yunlang Cai
The combination of nanocarriers and chemotherapy drugs can release the chemotherapy drugs to the tumor tissue, which can enhance the antitumor effect and reduce the adverse reactions at the same time. In this study, a co-delivery system based on hollow mesoporous silica nanoparticles (HMSN) was developed and characterized. We also investigated the in vitro effect of this system on CD117+CD44+A2780 cell line. HMSN was selected as the nanocarrier, with -COOH modified on the surface and doxorubicin (DOX), NVP-AEW 541 (NVP) loaded inside...
September 2017: Oncology Reports
Qinfu Zhao, Shengyu Wang, Yang Yang, Xian Li, Donghua Di, Chungang Zhang, Tongying Jiang, Siling Wang
In this work, a redox and enzyme dual-stimuli responsive drug delivery system (DDS) with tracking function (HMSN-SS-CDPEI@HA) based on carbon dots capped hollow mesoporous silica nanoparticles (HMSN) has been developed for targeted drug delivery. The positively charged CDPEI nanoparticles prepared by polyethylenimine (PEI) were grafted on the pore openings of HMSN through disulfide bonds and were used as "gatekeepers" to trap the drugs within the hollow cavity. The hyaluronic acid (HA), a natural polysaccharide, was further grafted on the surface of HMSN to realize targeted drug delivery, controlled drug release and improved the stability...
September 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
Laura Donaldson, Ryan Rebello, Amadeo Rodriguez
A 45-year-old man presented with a slowly progressive pupil-involving third nerve palsy. Magnetic resonance imaging (MRI) revealed a tubular lesion extending from the interpeduncular cistern through the cavernous sinus and into the left orbit where it branched into a superior and an inferior division, clearly outlining the anatomy of the third cranial nerve. Multiple other, less pronounced, enlarged cranial nerves were noted. The differential diagnosis included chronic inflammatory demyelinating polyneuropathy (CIDP), hereditary motor and sensory neuropathy (HMSN), neurofibromatosis (NF), and schwannomatosis...
June 2017: Neuro-ophthalmology
Zhaokui Jin, Yanyuan Wen, Yaxin Hu, Wenwen Chen, Xianfeng Zheng, Weisheng Guo, Tianfu Wang, Zhiyong Qian, Bao-Lian Su, Qianjun He
Nitric oxide (NO) has been well identified as a specific free radical molecule possessing wide-ranging therapeutic effects. Targeted delivery and controlled release of NO are highly desired to realize precision gas therapy, but are still challenging owing to the non-targetability and uncontrollability of NO itself. Herein, we propose a new concept of MRI-guided and ultrasound-triggered gas release for precision gas therapy. Based on this concept, we develop a novel ultrasound-responsive BNN-type NO-releasing molecule (NORM) and an advanced rattle-type nano-carrier of superparamagnetic iron oxide-encapsulated mesoporous silica nanoparticles (SPION@hMSN), and use them to construct a new intelligent nanomedicine (BNN6-SPION@hMSN) for the first time...
March 9, 2017: Nanoscale
A Posa, A Emmer, M E Kornhuber
BACKGROUND: Charcot-Marie-Tooth disease (CMT) type 1A is the most common form of CMT 1 and one of the autosomal dominant demyelinating hereditary motor and sensory neuropathies (HMSN). Cranial nerves may be frequently subclinically affected in CMT disease. However manifest clinical signs of cranial nerve involvement are rare. METHODS: This case comprise neurological, ophthalmological, internal medicine and ear-nose-throat investigation, motor and sensory nerve conduction velocity, auditory evoked potentials and orbicularis-oculi reflex measurements, lumbar puncture and blood examination, inclusive molecular genetic testing, as well as electrocardiogram and cranial imaging such as computer tomography and magnetic resonance imaging RESULTS: The present case shows a Charcot-Marie-Tooth (CMT) 1A patient with complete unilateral oculomotor palsy in combination with predominant ipsilateral subclinical trigeminal demyelination...
April 2017: Clinical Neurology and Neurosurgery
Nagahisa Murakami, Keiko Imamura, Yuishin Izumi, Naohiro Egawa, Kayoko Tsukita, Takako Enami, Takuya Yamamoto, Toshitaka Kawarai, Ryuji Kaji, Haruhisa Inoue
Hereditary motor and sensory neuropathy with proximal dominant involvement (HMSN-P) is caused by a heterozygous mutation (P285L) in Tropomyosin-receptor kinase Fused Gene (TFG), histopathologically characterized by progressive spinal motor neuron loss with TFG cytosolic aggregates. Although the TFG protein, found as a type of fusion oncoprotein, is known to facilitate vesicle transport from endoplasmic reticulum (ER) to Golgi apparatus at ER exit site, it is unclear how mutant TFG causes motor neuron degeneration...
February 15, 2017: Molecular Brain
Dana Šafka Brožková, Jaroslava Paulasová Schwabová, Jana Neupauerová, Jana Sabová, Marcela Krůtová, Vladimír Peřina, Marie Trková, Petra Laššuthová, Pavel Seeman
Hereditary motor and sensory neuropathy-type Lom (HMSNL), also known as CMT4D, a demyelinating neuropathy with late-onset deafness is an autosomal recessive disorder threatening Roma population worldwide. The clinical phenotype was reported in several case reports before the gene discovery. HMSNL is caused by a homozygous founder mutation p.Arg148* in the N-Myc downstream-regulated gene 1. Here, we report findings from the Czech Republic, where HMSNL was found in 12 Czech patients from eight families. In these 12 patients, 11 of the causes were due to p...
March 2017: Journal of Human Genetics
Yang Qiu, Chao Wu, Jie Jiang, Yanna Hao, Ying Zhao, Jie Xu, Tong Yu, Peng Ji
A carrier consisting of lipid-coated hollow mesoporous silica nanospheres (L-HMSN) was produced for the combination of the water-insoluble drug (paclitaxel, PTX) and the water-soluble drug (doxorubicin, DOX). DOX was adsorbed into the nanoscale hollow structure of the hollow mesoporous silica nanospheres (HMSN) by adsorption and PTX was wrapped in the phospholipid layer of the HMSN surface by lipid film hydration method. The characterization results showed that DOX and PTX were present in the nanopheres in an amorphous state...
February 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
Giuseppe Piscosquito, Stefania Magri, Paola Saveri, Micaela Milani, Claudia Ciano, Laura Farina, Franco Taroni, Davide Pareyson
Charcot-Marie-Tooth disease type 4D (CMT4D), also known as hereditary motor and sensory neuropathy Lom type (HMSNL), is an autosomal recessive, early onset, severe demyelinating neuropathy with hearing loss, caused by N-Myc downstream-regulated gene 1 (NDRG1) mutations. CMT4D is rare with only three known mutations, one of which (p.Arg148Ter) is found in patients of Romani ancestry and accounts for the vast majority of cases. We report a 38-year-old Italian female with motor development delay, progressive neuropathy, and sensorineural deafness...
March 2017: Journal of the Peripheral Nervous System: JPNS
Nirav Das, Savannah Kandalaft, Xiao Wu, Ajay Malhotra
BACKGROUND: Charcot-Marie-Tooth Disease (CMT) is a rare disorder with less than 200,000 cases reported in the US every year, making diagnosis challenging. MR and CT imaging has become more common in the evaluation of CMT to identify areas of disease involvement. CASE REPORT: A 27-year-old female from Guatemala with a past history of polio initially presented to the emergency room for necrotizing pneumonia. MRI images demonstrated smoothly enlarged, mildly enhancing trigeminal nerves...
March 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
Chun Li, Junqing Hu, Wenyao Li, Guosheng Song, Jia Shen
Our previous work reported the development of a proteasome inhibitor, bortezomib (BTZ) encapsulated hollow mesoporous silica nanospheres (HMSNs), as a biocompatible and effective drug-delivery system for non-small cell lung cancer (NSCLC) therapy. Then we found that the tumor-suppressing effect of BTZ or HMSNs-BTZ was compromised in p53 null/mutant NSCLC. In fact, clinical studies have shown a beneficial effect of the combination of p53 gene therapy and chemotherapeutic drugs for patients with NSCLC, especially with the p53 gene null/mutant NSCLC...
December 20, 2016: Biomaterials Science
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