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https://www.readbyqxmd.com/read/28431482/nanozyme-applications-in-biology-and-medicine-an-overview
#1
Jafar Golchin, Kazem Golchin, Neda Alidadian, Shahrooz Ghaderi, Sajjad Eslamkhah, Masoud Eslamkhah, Abolfazl Akbarzadeh
Nanozymes, in nature, are artificial enzymes. Innovated by Ronald Breslow to mimic enzymes. Nanozymes have widespread applications including targeted cancer therapy, diagnostic medicine and bio-sensing even environmental toxicology. However, these applications are a novel research field in biomedicine, but are growing fast. Enzyme-based applications such as immune-absorbent assay (ELIZA) are expensive because of the complexity of producing enzymes and antibodies. Not only, some nanoparticles can mimic these enzymes such as superoxides, but also they can manipulate biological pathways directly like autophagy...
April 21, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/28430671/elevated-production-of-nociceptive-cc-chemokines-and-se-selectin-in-patients-with-low-back-pain-and-the-effects-of-spinal-manipulation-a-non-randomized-clinical-trial
#2
Julita A Teodorczyk-Injeyan, Marion McGregor, John J Triano, H Stephen Injeyan
BACKGROUND: The involvement of inflammatory components in the pathophysiology of low back pain is poorly understood. It has been suggested that spinal manipulative therapy (SMT) may exert anti-inflammatory effects. PURPOSE: To determine the involvement of inflammation-associated chemokines (CC series) in the pathogenesis of non-specific low back pain and to evaluate the effect of SMT on that process. METHODS: Patients presenting with non-radicular, non-specific low back pain (minimum pain score 3 on 10 point visual analogue scale, VAS) were recruited according to stringent inclusion criteria...
April 19, 2017: Clinical Journal of Pain
https://www.readbyqxmd.com/read/28428707/advanced-pancreatic-ductal-adenocarcinoma-complexities-of-treatment-and-emerging-therapeutic-options
#3
REVIEW
Chandra Diwakarla, Katherine Hannan, Nadine Hein, Desmond Yip
Pancreatic ductal adenocarcinoma is a devastating disease with a poor prognosis regardless of stage. To date the mainstay of therapy for advanced disease has been chemotherapy with little incremental improvements in outcome. Despite extensive research investigating new treatment options the current practices continue to utilise fluorouracil or gemcitabine containing combinations. The need for novel therapeutic approaches is mandated by the ongoing poor survival rates associated with this disease. One such approach may include manipulation of ribosome biogenesis and the nucleolar stress response, which has recently been applied to haematological malignancies such as lymphoma and prostate cancer with promising results...
April 7, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28427897/boosters-and-barriers-for-direct-cardiac-reprogramming
#4
REVIEW
Mahmood Talkhabi, Elmira Rezaei Zonooz, Hossein Baharvand
Heart disease is currently the most significant cause of morbidity and mortality worldwide, which accounts for approximately 33% of all deaths. Recently, a promising and alchemy-like strategy has been developed called direct cardiac reprogramming, which directly converts somatic cells such as fibroblasts to cardiac lineage cells such as cardiomyocytes (CMs), termed induced CMs or iCMs. The first in vitro cardiac reprogramming study, mediated by cardiac transcription factors (TFs)-Gata4, Tbx5 and Mef2C-, was not enough efficient to produce an adequate number of fully reprogrammed, functional iCMs...
April 17, 2017: Life Sciences
https://www.readbyqxmd.com/read/28427436/a-3d-in-vitro-model-of-the-human-breast-duct-a-method-to-unravel-myoepithelial-luminal-interactions-in-the-progression-of-breast-cancer
#5
Edward P Carter, James A Gopsill, Jennifer J Gomm, J Louise Jones, Richard P Grose
BACKGROUND: 3D modelling fulfils a critical role in research, allowing for complex cell behaviour and interactions to be studied in physiomimetic conditions. With tissue banks becoming established for a number of cancers, researchers now have access to primary patient cells, providing the perfect building blocks to recreate and interrogate intricate cellular systems in the laboratory. The ducts of the human breast are composed of an inner layer of luminal cells supported by an outer layer of myoepithelial cells...
April 21, 2017: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/28424168/mir-9-5p-promotes-msc-migration-by-activating-%C3%AE-catenin-signaling-pathway
#6
Xianyang Li, Lihong He, Qing Yue, Junhou Lu, Naixin Kang, Xiaojing Xu, Huihui Wang, Huanxiang Zhang
Mesenchymal stem cells (MSCs) have the potential to treat various tissue damages, but the very limited number of cells that migrate to the damaged region strongly restricts their therapeutic applications. Full understanding of mechanisms regulating MSC migration will help to improve their migration ability and therapeutic effects. Increasing evidence shows that microRNAs play important roles in the regulation of MSC migration. In the present study, we reported that miR-9-5p was upregulated in HGF-treated MSCs and in MSCs with high migration ability...
April 19, 2017: American Journal of Physiology. Cell Physiology
https://www.readbyqxmd.com/read/28418281/programmed-death-ligand-1-pd-l1-expression-in-the-programmed-death-receptor-1-pd-1-pd-l1-blockade-a-key-player-against-various-cancers
#7
Jian Guan, Khin Sandar Lim, Tarek Mekhail, Chung-Che Chang
CONTEXT: - Immune checkpoint pathways, including programmed death receptor-1/programmed death ligand-1 (PD-1/PD-L1) signaling pathway, which are important in mediating self-tolerance and controlling self-damage, can sometimes be manipulated by cancer cells to evade immune surveillance. Recent clinical trials further demonstrate the efficacy of PD-1/PD-L1-targeted therapy in various cancers and reveal a new era of cancer immunotherapy. OBJECTIVE: - To review the mechanism of the PD-1/PD-L1 signaling pathway, the regulation of this pathway, PD-1/PD-L1 as a predictive and/or prognostic marker in various cancers, and strategies of measuring PD-L1 expression...
April 18, 2017: Archives of Pathology & Laboratory Medicine
https://www.readbyqxmd.com/read/28417903/an-assessment-of-the-potential-use-of-bnnts-for-boron-neutron-capture-therapy
#8
Tiago H Ferreira, Marcelo C Miranda, Zildete Rocha, Alexandre S Leal, Dawidson A Gomes, Edesia M B Sousa
Currently, nanostructured compounds have been standing out for their optical, mechanical, and chemical features and for the possibilities of manipulation and regulation of complex biological processes. One of these compounds is boron nitride nanotubes (BNNTs), which are a nanostructured material analog to carbon nanotubes, but formed of nitrogen and boron atoms. BNNTs present high thermal stability along with high chemical inertia. Among biological applications, its biocompatibility, cellular uptake, and functionalization potential can be highlighted, in addition to its eased utilization due to its nanometric size and tumor cell internalization...
April 12, 2017: Nanomaterials
https://www.readbyqxmd.com/read/28416479/suppression-of-integrin-%C3%AE-3%C3%AE-1-by-%C3%AE-9%C3%AE-1-in-the-epidermis-controls-the-paracrine-resolution-of-wound-angiogenesis
#9
Whitney M Longmate, Scott P Lyons, Sridar V Chittur, Kevin M Pumiglia, Livingston Van De Water, C Michael DiPersio
Development of wound therapies is hindered by poor understanding of combinatorial integrin function in the epidermis. In this study, we generated mice with epidermis-specific deletion of α3β1, α9β1, or both integrins as well as keratinocyte lines expressing these integrin combinations. Consistent with proangiogenic roles for α3β1, α3-null keratinocytes showed reduced paracrine stimulation of endothelial cell migration and survival, and wounds of epidermis-specific α3 knockout mice displayed impaired angiogenesis...
April 17, 2017: Journal of Cell Biology
https://www.readbyqxmd.com/read/28416171/the-comparison-of-knee-osteoarthritis-treatment-with-single-dose-bone-marrow-derived-mononuclear-cells-vs-hyaluronic-acid-injections
#10
Valdis Goncars, Eriks Jakobsons, Kristaps Blums, Ieva Briede, Liene Patetko, Kristaps Erglis, Martins Erglis, Konstantins Kalnberzs, Indrikis Muiznieks, Andrejs Erglis
OBJECTIVE: The aim of this study was to compare treatment methods of the knee joint degenerative osteoarthritis, using autologous bone marrow-derived mononuclear cells and hyaluronic acid injections and observe prevalence of adverse effects in both groups. MATERIALS AND METHODS: A prospective randomized controlled clinical trial was carried out. The analysis of pain and changes in osteoarthritis symptoms after a single intra-articular bone marrow-derived mononuclear cell injection into the knee joint in the Kellgren-Lawrence stage II-III osteoarthritis during the 12-month period were performed...
March 22, 2017: Medicina
https://www.readbyqxmd.com/read/28412953/quantification-of-task-dependent-cortical-activation-evoked-by-robotic-continuous-wrist-joint-manipulation-in-chronic-hemiparetic-stroke
#11
Martijn P Vlaar, Teodoro Solis-Escalante, Julius P A Dewald, Erwin E H van Wegen, Alfred C Schouten, Gert Kwakkel, Frans C T van der Helm
BACKGROUND: Cortical damage after stroke can drastically impair sensory and motor function of the upper limb, affecting the execution of activities of daily living and quality of life. Motor impairment after stroke has been thoroughly studied, however sensory impairment and its relation to movement control has received less attention. Integrity of the somatosensory system is essential for feedback control of human movement, and compromised integrity due to stroke has been linked to sensory impairment...
April 17, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/28412324/nanoformulation-based-sequential-combination-cancer-therapy
#12
REVIEW
Gayong Shim, Mi-Gyeong Kim, Dongyoon Kim, Joo Yeon Park, Yu-Kyoung Oh
Although combining two or more treatments is regarded as an indispensable approach for effectively treating cancer, the traditional cocktail-based combination therapies are seriously limited by coordination issues that fail to account for differences in the pharmacokinetics and action sites of each drug. The careful manipulation of dosing regimens, such as by the sequential application of combination treatments, may satisfy the temporal and spatial needs of each drug and achieve successful combination antitumor therapy...
April 12, 2017: Advanced Drug Delivery Reviews
https://www.readbyqxmd.com/read/28412241/cathepsin-l-silencing-increases-as2o3-toxicity-in-malignantly-transformed-pilocytic-astrocytoma-mpa58-cells-by-activating-caspases-3-7
#13
Monika Primon, Peter C Huszthy, Helena Motaln, Krishna M Talasila, Hrvoje Miletic, Nadia A Atai, Rolf Bjerkvig, Tamara Lah Turnšek
Low-grade, pilocytic astrocytomas are treated by resection, but additional therapy is necessary for those tumors with anaplastic features. Arsenic trioxide (As2O3) is emerging as an effective chemotherapeutic agent for treatment of malignant glioblastoma multiforme, where Cathepsin L silencing enables lower, less harmful As2O3 concentrations to achieve the desired cytotoxic effect. Here, we evaluated the effects of As2O3 combined with stable Cathepsin L shRNA silencing on cell viability/metabolic activity, and apoptosis in primary cultures of recurrent malignantly transformed pilocytic astrocytoma (MPA)...
April 12, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28411216/construction-of-a-dcas9-based-gene-knockdown-system-in-staphylococcus-aureus
#14
Changlong Zhao, Xueqin Shu, Baolin Sun
There has been constant absence of an efficient gene knockdown method in the important human pathogen Staphylococcus aureus like RNA interference in eukaryotes. The early developed antisense RNA technology is mainly applied for forward genetic screen, but is rather limiting in specific gene knockdown for the lack of rational antisense RNA design strategies. Here we report an efficient and specific gene knockdown system in S. aureus based on type II clustered regularly interspaced short palindromic repeats (CRISPR) system from Streptococcus pyogenes...
April 14, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28410131/substance-use-disorder-a-bio-directional-subset-of-reward-deficiency-syndrome
#15
Kenneth Blum, Mark Gold, Zsolt Demetrovics, Trevor Archer, Panayotis K Thanos, David Baron, Rajendra D Badgaiyan
This commentary is to inform clinicians challenged with an increase in people seeking treatment for Substance Use Disorder (SUD), that the ninety percent revolving door, is, in part, due to post-withdrawal, untreated neurotoxicity. This impairment attenuates neurotransmitter signaling and compromises resting state functional connectivity, leading to unwanted sequelae including depression, sleep disturbances, sensation seeking, lack of satisfaction and impulsivity. Neuroimaging studies indicate that neurobiological recovery can take years...
June 1, 2017: Frontiers in Bioscience (Landmark Edition)
https://www.readbyqxmd.com/read/28408882/targeted-nanotechnology-in-glioblastoma-multiforme
#16
REVIEW
Talita Glaser, Inbo Han, Liquan Wu, Xiang Zeng
Gliomas, and in particular glioblastoma multiforme, are aggressive brain tumors characterized by a poor prognosis and high rates of recurrence. Current treatment strategies are based on open surgery, chemotherapy (temozolomide) and radiotherapy. However, none of these treatments, alone or in combination, are considered effective in managing this devastating disease, resulting in a median survival time of less than 15 months. The efficiency of chemotherapy is mainly compromised by the blood-brain barrier (BBB) that selectively inhibits drugs from infiltrating into the tumor mass...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28407482/salmonella-typhimurium-diarrhea-reveals-basic-principles-of-enteropathogen-infection-and-disease-promoted-dna-exchange
#17
REVIEW
Sandra Y Wotzka, Bidong D Nguyen, Wolf-Dietrich Hardt
Despite decades of research, efficient therapies for most enteropathogenic bacteria are still lacking. In this review, we focus on Salmonella enterica Typhimurium (S. Typhimurium), a frequent cause of acute, self-limiting food-borne diarrhea and a model that has revealed key principles of enteropathogen infection. We review the steps of gut infection and the mucosal innate-immune defenses limiting pathogen burdens, and we discuss how inflammation boosts gut luminal S. Typhimurium growth. We also discuss how S...
April 12, 2017: Cell Host & Microbe
https://www.readbyqxmd.com/read/28406324/evolving-paradigm-of-treatment-for-autoimmune-hepatitis
#18
Albert J Czaja
Current medications for autoimmune hepatitis have broad anti-inflammatory and immunosuppressive actions, and their effects are short-lived and inconsistent. The goals of this review were to describe the actions and shortcomings of these medications, indicate the key pathogenic mechanisms that might be targeted by site-directed interventions, and present the pivotal studies supporting development of these alternative agents. Areas covered: Abstracts cited in PubMed from April 1964 to February 2017 were identified using the search words "treatment of autoimmune hepatitis"...
April 13, 2017: Expert Review of Clinical Immunology
https://www.readbyqxmd.com/read/28404706/spinal-manipulative-therapy-for-low-back-pain
#19
Megan A Manning, G Michael Allan
No abstract text is available yet for this article.
April 2017: Canadian Family Physician Médecin de Famille Canadien
https://www.readbyqxmd.com/read/28402346/tissue-engineering-therapy-for-atrophic-maxilla-using-minimally-manipulated-cd90-and-cd105-bone-marrow-stem-cells-a-case-report
#20
Erick Valdivia, Gerardo Mendoza-Azpur, Jhon Pando, Heydi Cornejo, Antonio Carrasco, Myron Nevins, David Kim
Bone deficiencies in the jaws of edentulous patients limit the possibility of successful placement and osseointegration of endosseous implants. Bone resorption is defined as a vertical and horizontal loss of quality and quantity in the residual bone ridges; lack of bone structure requires bone grafting procedures to enable implant placement and to improve the function, predictability, and longevity of implants. The objective of this case study was to demonstrate the feasibility of a novel cell therapy treatment for localized jaw bone defects with tissue repair cells composed of a mixture of bone marrow-derived cells, including CD90+ mesenchymal stem cells and CD105+ monocytes/macrophages, and xenograft blocks, in what would be a safe and efficacious approach to the regeneration of localized craniofacial bone defects...
May 2017: International Journal of Periodontics & Restorative Dentistry
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