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https://www.readbyqxmd.com/read/29786837/high-intensity-ultrasound-for-salmonella-enteritidis-inactivation-in-culture-and-liquid-whole-eggs
#1
Chayapa Techathuvanan, Doris Helen D'Souza
High intensity ultrasound (HIU) continues to be researched as a nonthermal inactivation technology of appeal to food manufacturers. The advantages of HIU include maintenance of product quality, freshness, product homogenization, along with simultaneous inactivation of pathogens. Besides, it is simple, relatively inexpensive, and easily adaptable to most processing environments. This study investigated the effect of HIU for Salmonella Enteritidis inactivation in culture and liquid whole eggs (LWEs) to decrease egg-associated outbreaks...
May 22, 2018: Journal of Food Science
https://www.readbyqxmd.com/read/29785167/the-3d-laparoscopic-approach-for-radical-prostatectomy-overcomes-the-hurdles-of-metabolic-syndrome
#2
Radu-Tudor Coman, Nicolae Crisan, Iulia Andras, Bogdan Nicu, Ioan-Stelian Bocsan
No abstract text is available yet for this article.
2018: Clujul Medical (1957)
https://www.readbyqxmd.com/read/29784994/designing-natural-and-synthetic-immune-tissues
#3
REVIEW
Emily A Gosselin, Haleigh B Eppler, Jonathan S Bromberg, Christopher M Jewell
Vaccines and immunotherapies have provided enormous improvements for public health, but there are fundamental disconnects between where most studies are performed-in cell culture and animal models-and the ultimate application in humans. Engineering immune tissues and organs, such as bone marrow, thymus, lymph nodes and spleen, could be instrumental in overcoming these hurdles. Fundamentally, designed immune tissues could serve as in vitro tools to more accurately study human immune function and disease, while immune tissues engineered for implantation as next-generation vaccines or immunotherapies could enable direct, on-demand control over generation and regulation of immune function...
May 21, 2018: Nature Materials
https://www.readbyqxmd.com/read/29782973/enhanced-retinal-pigment-epithelium-rpe-regeneration-using-curcumin-alginate-hydrogels-in-vitro-evaluation
#4
Jong Ho Park, Eun Yeong Shin, Myeong Eun Shin, Min Joung Choi, Cristiano Carlomagno, Jeong Eun Song, Gilson Khang
The retinal pigment epithelium (RPE) plays a significant role in retaining structural integrity of eye. Factors such as reduction in cell regeneration due to aging and physical injury pose a major hurdle in RPE regeneration. In this study, we exploited the use of alginate (AGT) incorporated with Curcumin (CCI) forming a hydrogel based system CCI/AGT. The fabricated hydrogel could anchor RPE cell in it. In vitro cell analysis revealed that the CCI/AGT hydrogel shows good biocompatibility, enhanced cell growth ability and higher ECM formation compared to the pure AGT hydrogel...
May 18, 2018: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29781813/the-notch1-cd44-axis-drives-pathogenesis-in-a-t-cell-acute-lymphoblastic-leukemia-model
#5
Marina García-Peydró, Patricia Fuentes, Marta Mosquera, María J García-León, Juan Alcain, Antonio Rodríguez, Purificación García de Miguel, Pablo Menéndez, Kees Weijer, Hergen Spits, David T Scadden, Carlos Cuesta-Mateos, Cecilia Muñoz-Calleja, Francisco Sánchez-Madrid, María L Toribio
NOTCH1 is a prevalent signaling pathway in T cell acute lymphoblastic leukemia (T-ALL), but crucial NOTCH1 downstream signals and target genes contributing to T-ALL pathogenesis cannot be retrospectively analyzed in patients and thus remain ill defined. This information is clinically relevant, as initiating lesions that lead to cell transformation and leukemia-initiating cell (LIC) activity are promising therapeutic targets against the major hurdle of T-ALL relapse. Here, we describe the generation in vivo of a human T cell leukemia that recapitulates T-ALL in patients, which arises de novo in immunodeficient mice reconstituted with human hematopoietic progenitors ectopically expressing active NOTCH1...
May 21, 2018: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/29780868/tau-positron-emission-tomography-imaging-in-tauopathies-the-added-hurdle-of-off-target-binding
#6
Laetitia Lemoine, Antoine Leuzy, Konstantinos Chiotis, Elena Rodriguez-Vieitez, Agneta Nordberg
Ligands targeting tau for use with positron emission tomography have rapidly been developed during the past several years, enabling the in vivo study of tau pathology in patients with Alzheimer's disease and related non-Alzheimer's disease tauopathies. Several candidate compounds have been developed, showing good in vitro characteristics with respect to their ability to bind tau deposits; off-target binding, however, has also been observed. In this short commentary, we briefly summarize the available in vivo and in vitro evidence pertaining to their off-target binding and discuss the different approaches that are needed for the future development of tau positron emission tomography tracers...
2018: Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring
https://www.readbyqxmd.com/read/29779547/policy-pathways-to-address-provider-workforce-barriers-to-buprenorphine-treatment
#7
Rebecca L Haffajee, Amy S B Bohnert, Pooja A Lagisetty
At least 2.3 million people in the U.S. have an opioid use disorder, less than 40% of whom receive evidence-based treatment. Buprenorphine used as part of medication-assisted treatment has high potential to address this gap because of its approval for use in non-specialty outpatient settings, effectiveness at promoting abstinence, and cost effectiveness. However, less than 4% of licensed physicians are approved to prescribe buprenorphine for opioid use disorder, and approximately 47% of counties lack a buprenorphine-waivered physician...
June 2018: American Journal of Preventive Medicine
https://www.readbyqxmd.com/read/29778646/the-fine-art-of-integral-membrane-protein-crystallisation
#8
REVIEW
James Birch, Danny Axford, James Foadi, Arne Meyer, Annette Eckardt, Yvonne Thielmann, Isabel Moraes
Integral membrane proteins are among the most fascinating and important biomolecules as they play a vital role in many biological functions. Knowledge of their atomic structures is fundamental to the understanding of their biochemical function and key in many drug discovery programs. However, over the years, structure determination of integral membrane proteins has proven to be far from trivial, hence they are underrepresented in the protein data bank. Low expression levels, insolubility and instability are just a few of the many hurdles one faces when studying these proteins...
May 17, 2018: Methods: a Companion to Methods in Enzymology
https://www.readbyqxmd.com/read/29778187/sensitivity-of-african-swine-fever-virus-asfv-to-heat-alkalinity-and-peroxide-treatment-in-presence-or-absence-of-porcine-plasma
#9
I D Kalmar, A B Cay, M Tignon
African swine fever virus (ASFV) is a highly resistant viraemic virus with devastating socio-economic impact. Its present epidemiology in Eastern Europe and Russia warrants increased biosecurity measures in Western Europe. This includes proactive precautions on traffic of pork products within and between areas that are officially free from ASF. Namely, delayed notification of clinical signs or introduction of a low-virulent strain in ASF-free areas could result in presence of ASFV in veterinary inspected pork and pork by-products...
June 2018: Veterinary Microbiology
https://www.readbyqxmd.com/read/29777593/degradation-of-recombinant-proteins-by-cho-host-cell-proteases-is-prevented-by-matriptase-1-knock-out
#10
Holger Laux, Sandrine Romand, Sandro Nuciforo, Christopher J Farady, Joel Tapparel, Stine Buechmann-Moeller, Benjamin Sommer, Edward J Oakeley, Ursula Bodendorf
An increasing number of non-antibody format proteins are entering the clinical development. However, one of the major hurdles for the production of non-antibody glycoproteins is host cell-related proteolytic degradation, which can drastically impact developability and timelines of pipeline projects. Chinese hamster ovary (CHO) cells are the preferred production host for recombinant therapeutic proteins. Using protease inhibitors, transcriptomics and genetic knockdowns we have identified, out of the more than 700 known proteases in rodents, Matriptase-1 as the major protease involved in degradation of recombinant proteins expressed in CHO-K1 cells...
May 19, 2018: Biotechnology and Bioengineering
https://www.readbyqxmd.com/read/29774899/smartphone-based-rapid-quantification-of-viable-bacteria-by-single-cell-microdroplet-turbidity-imaging
#11
Xiaonan Cui, Lihui Ren, Yufei Shan, Xixian Wang, Zhenlong Yang, Chunyu Li, Jian Xu, Bo Ma
Standard plate count (SPC) has been recognized as the golden standard for the quantification of viable bacteria. However, SPC usually takes one to several days to grow individual cells into a visible colony, which greatly hampers its application in rapid bacteria enumeration. Here we present a microdroplet turbidity imaging based digital standard plate count (dSPC) method to overcome this hurdle. Instead of cultivating on agar plates, bacteria are encapsulated in monodisperse microdroplets for single-cell cultivation...
May 18, 2018: Analyst
https://www.readbyqxmd.com/read/29772289/nose-to-brain-drug-delivery-an-update-on-clinical-challenges-and-progress-towards-approval-of-anti-alzheimer-drugs
#12
REVIEW
Mukta Agrawal, Swarnlata Saraf, Shailendra Saraf, Sophia G Antimisiaris, Mahavir Chougule, Sunday A Shoyele, Amit Alexander
According to the Alzheimer Association Report (2017), Alzheimer's disease (AD) is the 6th primary cause of death in the USA, which affects nearly 5.5 million people. In the year 2017 itself, the cost of AD treatment in the USA has been reported to rise to $259 billion. This statistic shows the severity of the disease in the USA which is very much similar across the globe. On the other hand, the treatment remains limited to a few conventional oral medications (approved by FDA). These are mainly acting superficially from mild to the moderate AD...
May 14, 2018: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/29772270/identification-of-certain-panax-species-to-be-potential-substitutes-for-panax-notoginseng-in-hemostatic-treatments
#13
REVIEW
Bin Rui Yang, Sze Chung Yuen, Guang Yi Fan, Wei-Hong Cong, Siu-Wai Leung, Simon Ming-Yuen Lee
Panax notoginseng (Burkill) F. H. Chen ex C. H. Chow (P. notoginseng) is a highly valued Chinese materia medica having a hemostatic effect and mainly used for the treatment of trauma and ischemic cardiovascular diseases. Stringent growth requirements, weak resistance to insect pests and plant diseases, arsenic contamination and continuous cropping constitute hurdles to further increases in the agricultural production of P. notoginseng. This review focuses on the traditional uses (based on traditional Chinese medicine theory), major chemical components, biological activities, pharmacological properties, geographical distributions and historical development of taxonomy of P...
May 14, 2018: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/29771942/antisense-pmo-cocktails-effectively-skip-dystrophin-exons-45-55-in-myotubes-transdifferentiated-from-dmd-patient-fibroblasts
#14
Joshua Lee, Yusuke Echigoya, William Duddy, Takashi Saito, Yoshitsugu Aoki, Shin'ichi Takeda, Toshifumi Yokota
Antisense-mediated exon skipping has made significant progress as a therapeutic platform in recent years, especially in the case of Duchenne muscular dystrophy (DMD). Despite FDA approval of eteplirsen-the first-ever antisense drug clinically marketed for DMD-exon skipping therapy still faces the significant hurdles of limited applicability and unknown truncated protein function. In-frame exon skipping of dystrophin exons 45-55 represents a significant approach to treating DMD, as a large proportion of patients harbor mutations within this "hotspot" region...
2018: PloS One
https://www.readbyqxmd.com/read/29771317/exon-skipping-advances-for-duchenne-muscular-dystrophy
#15
Lucía Echevarría, Philippine Aupy, Aurélie Goyenvalle
Duchenne muscular dystrophy (DMD) is a fatal genetic disorder characterized by progressive muscle wasting that has currently no cure. Exon-skipping strategy represents one of the most promising therapeutic approaches that aims to restore expression of a shorter but functional dystrophin protein. The antisense field has remarkably progress over the last years with recent accelerated approval of the first ASO-based therapy for DMD, Exondys 51, though the therapeutic benefit remains to be proven in patients. Despite clinical advances, the poor effective delivery to target all muscle remains the main hurdle for antisense drug therapy...
May 16, 2018: Human Molecular Genetics
https://www.readbyqxmd.com/read/29771295/the-association-between-objectively-measured-physical-activity-and-subsequent-health-care-utilization-in-older-men
#16
Lisa Langsetmo, Allyson M Kats, Peggy M Cawthon, Jane A Cauley, Tien N Vo, Brent C Taylor, Marcia L Stefanick, Nancy E Lane, Katie L Stone, Eric S Orwoll, John T Schousboe, Kristine E Ensrud
Background: To examine the associations between objective physical activity measures and subsequent health care utilization. Methods: We studied 1,283 men (mean age 79.1 years, SD 5.3) participating in the Osteoporotic Fractures in Men Study. Participants wore a SenseWear® Pro Armband monitor for 1 week. Data was summarized as daily (i) step counts, (ii) total energy expenditure, (iii) active energy expenditure, and (iv) activity time (sedentary, ≥ light, ≥ moderate)...
October 9, 2017: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
https://www.readbyqxmd.com/read/29770571/using-poly-l-lactic-acid-and-poly-%C3%A9-caprolactone-blends-to-fabricate-self-expanding-watertight-and-biodegradable-surgical-patches-for-potential-fetoscopic-myelomeningocele-repair
#17
Rigwed Tatu, Marc Oria, Sarah Pulliam, Lorenzo Signey, Marepalli B Rao, Jose L Peiro, Chia-Ying Lin
Our study focuses on the development and characterization of a self-expanding, watertight and biodegradable patch for fetoscopic myelomeningocele (MMC) prenatal repair. We fabricated poly(l-lactic acid) (PLA) and poly(ɛ-caprolactone) (PCL) blend films by solution casting. Formulation c with average glass transition temperature of 37.6 ± 1.2°C was chosen for temporospatial recovery. Favorable results from surface studies reflected homogeneous dispersion of polymers in the blend. The cytotoxicity was studied in human foreskin fibroblasts...
May 16, 2018: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/29769696/quantum-cascade-laser-based-infrared-microscopy-for-label-free-and-automated-cancer-classification-in-tissue-sections
#18
Claus Kuepper, Angela Kallenbach-Thieltges, Hendrik Juette, Andrea Tannapfel, Frederik Großerueschkamp, Klaus Gerwert
A feasibility study using a quantum cascade laser-based infrared microscope for the rapid and label-free classification of colorectal cancer tissues is presented. Infrared imaging is a reliable, robust, automated, and operator-independent tissue classification method that has been used for differential classification of tissue thin sections identifying tumorous regions. However, long acquisition time by the so far used FT-IR-based microscopes hampered the clinical translation of this technique. Here, the used quantum cascade laser-based microscope provides now infrared images for precise tissue classification within few minutes...
May 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29769344/efficient-delivery-of-hcmv-t-cell-antigens-by-attenuated-sendai-virus-vectors
#19
Richard Kiener, Markus Fleischmann, Marian Alexander Wiegand, Niels A W Lemmermann, Christiane Schwegler, Christine Kaufmann, Angelique Renzaho, Simone Thomas, Eva Felder, Hans Helmut Niller, Benedikt Asbach, Ralf Wagner
Human Cytomegalovirus (HCMV) represents a major cause of clinical complications during pregnancy as well as immunosuppression and the licensing of a protective HCMV vaccine remains an unmet global need. Herein, we designed and validated novel Sendai virus (SeV) vectors delivering T cell immunogens IE-1 and pp65. To enhance vector safety, we used a replication-deficient strain (rdSeV) that infects target cells in a non-productive manner while retaining viral gene expression. In this study, we explored the impact that transduction with rdSeV has on human dendritic cells (DCs) by comparing it to the parental, replication-competent Sendai virus strain (rcSeV) as well as the poxvirus strain Modified Vaccinia Ankara (MVA)...
May 16, 2018: Journal of Virology
https://www.readbyqxmd.com/read/29768698/financial-viability-of-emergency-department-observation-unit-billing-models
#20
Christopher W Baugh, Pawan Suri, Christopher G Caspers, Michael A Granovsky, Keith Neal, Michael A Ross
BACKGROUND: Outpatients receive observation services to determine the need for inpatient admission. These services are usually provided without the use of condition-specific protocols and in an unstructured manner, scattered throughout a hospital in areas typically designated for inpatient care. Emergency department observation units (EDOUs) use protocolized care to offer an efficient alternative with shorter lengths of stay, lower costs and higher patient satisfaction. EDOU growth is limited by existing policy barriers that prevent a "two-service" model of separate professional billing for both emergency and observation services...
May 16, 2018: Academic Emergency Medicine: Official Journal of the Society for Academic Emergency Medicine
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