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https://www.readbyqxmd.com/read/28738631/a-review-aptamer-based-analytical-strategies-using-the-nanomaterials-for-environmental-and-human-monitoring-of-toxic-heavy-metals
#1
REVIEW
Leila Farzin, Mojtaba Shamsipur, Shahab Sheibani
Recent developments in biotechnology offer the new methods for the sensitive detection of heavy metals based on the affinity and specificity of aptamers, as nucleic acid ligands selected from random sequence pools in vitro. Heavy metals have received considerable importance as the most toxic metallic pollutants which may cause serious environmental damages. They are classified as trace elements because of their presence in trace concentrations in various environmental matrices. Thus, the precise and sensitive methods to detect heavy metals are important to ensure human and environment safety...
November 1, 2017: Talanta
https://www.readbyqxmd.com/read/28738327/updated-concepts-on-treatment-outcomes-for-obstructive-sleep-apnea
#2
Victor Certal, Robson Capasso
Obstructive sleep apnea is a highly prevalent and poorly understood condition that not only leads to significant individual patient health damage, but carries a large societal cost secondary to excessive healthcare utilization, motor-vehicle accidents, and work absenteeism. While a significant fund of knowledge about its damaging effects on the cardiovascular system and neural pathways has been gathered over the past few decades, the translation to direct patient care still presents numerous challenges. With the exception of clear issues such as socially unacceptable snoring and breathing irregularities, the exact cause and effect relationship between airway narrowing, hypoxemia, and sleep fragmentation with subjective sleep-related complaints and neurocognitive symptoms is less clear...
2017: Advances in Oto-rhino-laryngology
https://www.readbyqxmd.com/read/28738262/systematic-review-of-community-health-impacts-of-mountaintop-removal-mining
#3
REVIEW
Abee L Boyles, Robyn B Blain, Johanna R Rochester, Raghavendhran Avanasi, Susan B Goldhaber, Sofie McComb, Stephanie D Holmgren, Scott A Masten, Kristina A Thayer
BACKGROUND: The objective of this evaluation is to understand the human health impacts of mountaintop removal (MTR) mining, the major method of coal mining in and around Central Appalachia. MTR mining impacts the air, water, and soil and raises concerns about potential adverse health effects in neighboring communities; exposures associated with MTR mining include particulate matter (PM), polycyclic aromatic hydrocarbons (PAHs), metals, hydrogen sulfide, and other recognized harmful substances...
July 21, 2017: Environment International
https://www.readbyqxmd.com/read/28738195/proteomic-and-genetics-insights-on-the-response-of-the-bacteriocinogenic-lactobacillus-sakei-crl1862-during-biofilm-formation-on-stainless-steel-surface-at-10%C3%A2-c
#4
Mariana Pérez-Ibarreche, Lucía M Mendoza, Graciela Vignolo, Silvina Fadda
Some lactic acid bacteria have the ability to form biofilms on food-industry surfaces and this property could be used to control food pathogens colonization. Lactobacillus sakei CR1862 was selected considering its bacteriocinogenic nature and ability to adhere to abiotic surfaces at low temperatures. In this study, the proteome of L. sakei CRL1862 grown either under biofilm on stainless steel surface and planktonic modes of growth at 10°C, was investigated. Using two-dimensional gel electrophoresis, 29 out of 43 statistically significant spots were identified by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry...
July 4, 2017: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/28738135/development-of-a-shortened-version-of-the-spatial-hearing-questionnaire-shq-s-for-screening-spatial-hearing-ability
#5
Hua Ou, Ann Perreau, Richard Tyler
Purpose: The Spatial Hearing Questionnaire (SHQ) was developed to address how to measure spatial-hearing ability in complex listening situations (Tyler, Perreau, & Ji, 2009). It has been translated and validated into various languages, including Chinese, Dutch, French, and Persian. Although the SHQ contains only 24 items, it could be time-consuming in a busy clinic to administer. The purposes of this study were to develop and validate a shortened version of the SHQ (SHQ-S) and to compare self-perceived spatial-hearing ability across adults with normal hearing (NH), hearing loss (HL), and cochlear implants (CIs)...
July 24, 2017: American Journal of Audiology
https://www.readbyqxmd.com/read/28738064/species-a-rotavirus-nsp3-acquires-its-translation-inhibitory-function-prior-to-stable-dimer-formation
#6
Hugo I Contreras-Treviño, Edgar Reyna-Rosas, Renato León-Rodríguez, Blanca H Ruiz-Ordaz, Tzvetanka D Dinkova, Ana M Cevallos, Luis Padilla-Noriega
Species A rotavirus non-structural protein 3 (NSP3) is a translational regulator that inhibits or, under some conditions, enhances host cell translation. NSP3 binds to the translation initiation factor eIF4G1 and evicts poly-(A) binding protein (PABP) from eIF4G1, thus inhibiting translation of polyadenylated mRNAs, presumably by disrupting the effect of PABP bound to their 3'-ends. NSP3 has a long coiled-coil region involved in dimerization that includes a chaperone Hsp90-binding domain (HS90BD). We aimed to study the role in NSP3 dimerization of a segment of the coiled-coil region adjoining the HS90BD...
2017: PloS One
https://www.readbyqxmd.com/read/28737967/integral-membrane-proteins-bottom-up-top-down-and-structural-proteomics
#7
Upendra Karr, Margaret Simonian, Julian P Whitelegge
Integral membrane proteins and lipids constitute the bilayer membranes that surround cells and sub-cellular compartments, and modulate movements of molecules and information between them. Since membrane protein drug targets represent a disproportionately large segment of the proteome, technical developments need timely review. Areas covered and literature search strategy: Publically available resources such as Pubmed were surveyed. Bottom-up proteomics analyses now allow efficient extraction and digestion such that membrane protein coverage is essentially complete, making up around one third of the proteome...
July 24, 2017: Expert Review of Proteomics
https://www.readbyqxmd.com/read/28737941/unveiling-the-catalytic-role-of-b-block-histidine-in-the-n-s-acyl-shift-step-of-protein-splicing
#8
Jon I Mujika, Xabier Lopez
Protein splicing is a post-translational modification that involves the excision of a segment denoted as intein and the joining of its two flanking segments. The process is auto-catalytic, making inteins appealing for many applications in biotechnology, bioengineering, or medicine. The canonical mechanism of protein splicing is composed of four sequential steps, and is initialized by an N-S or N-O acyl shift to form a linear ester. It is well established that a histidine, the most conserved amino acid in all inteins catalyzes this initial step, even though its role remains to be understood...
July 24, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/28737771/obesity-alters-the-lung-myeloid-cell-landscape-to-enhance-breast-cancer-metastasis-through-il5-and%C3%A2-gm-csf
#9
Daniela F Quail, Oakley C Olson, Priya Bhardwaj, Logan A Walsh, Leila Akkari, Marsha L Quick, I-Chun Chen, Nils Wendel, Nir Ben-Chetrit, Jeanne Walker, Peter R Holt, Andrew J Dannenberg, Johanna A Joyce
Obesity is associated with chronic, low-grade inflammation, which can disrupt homeostasis within tissue microenvironments. Given the correlation between obesity and relative risk of death from cancer, we investigated whether obesity-associated inflammation promotes metastatic progression. We demonstrate that obesity causes lung neutrophilia in otherwise normal mice, which is further exacerbated by the presence of a primary tumour. The increase in lung neutrophils translates to increased breast cancer metastasis to this site, in a GM-CSF- and IL5-dependent manner...
July 24, 2017: Nature Cell Biology
https://www.readbyqxmd.com/read/28737768/arid1a-mutated-ovarian-cancers-depend-on-hdac6%C3%A2-activity
#10
Benjamin G Bitler, Shuai Wu, Pyoung Hwa Park, Yang Hai, Katherine M Aird, Yemin Wang, Yali Zhai, Andrew V Kossenkov, Ana Vara-Ailor, Frank J Rauscher Iii, Weiping Zou, David W Speicher, David G Huntsman, Jose R Conejo-Garcia, Kathleen R Cho, David W Christianson, Rugang Zhang
ARID1A, encoding a subunit of the SWI/SNF chromatin-remodelling complex, is the most frequently mutated epigenetic regulator across all human cancers. ARID1A and TP53 mutations are typically mutually exclusive. Therapeutic approaches that correlate with this genetic characteristic remain to be explored. Here, we show that HDAC6 activity is essential in ARID1A-mutated ovarian cancers. Inhibition of HDAC6 activity using a clinically applicable small-molecule inhibitor significantly improved the survival of mice bearing ARID1A-mutated tumours...
July 24, 2017: Nature Cell Biology
https://www.readbyqxmd.com/read/28737678/an-update-on-jacalin-like-lectins-and-their-role-in-plant-defense
#11
REVIEW
Lara Esch, Ulrich Schaffrath
Plant lectins are proteins that reversibly bind carbohydrates and are assumed to play an important role in plant development and resistance. Through the binding of carbohydrate ligands, lectins are involved in the perception of environmental signals and their translation into phenotypical responses. These processes require down-stream signaling cascades, often mediated by interacting proteins. Fusing the respective genes of two interacting proteins can be a way to increase the efficiency of this process. Most recently, proteins containing jacalin-related lectin (JRL) domains became a subject of plant resistance responses research...
July 22, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28737672/mesoporous-silica-nanoparticles-as-drug-delivery-vehicles-in-cancer
#12
REVIEW
Anna Watermann, Juergen Brieger
Even though cancer treatment has improved over the recent decades, still more specific and effective treatment concepts are mandatory. Surgical removal is not always possible, metastases are challenging and chemo- and radiotherapy can not only have severe side-effects but also resistances may occur. To cope with these challenges more efficient therapies with fewer side-effects are required. One promising approach is the use of drug delivery vehicles. Here, mesoporous silica nanoparticles (MSN) are discussed as biodegradable drug carrier to improve efficacy and reduce side-effects...
July 22, 2017: Nanomaterials
https://www.readbyqxmd.com/read/28737478/family-matters-how-myc-family-oncogenes-impact-small-cell-lung-cancer
#13
Johannes Brägelmann, Stefanie Böhm, Matthew R Guthrie, Gurkan Mollaoglu, Trudy G Oliver, Martin L Sos
Small cell lung cancer (SCLC) is one of the most deadly cancers and currently lacks effective targeted treatment options. Recent advances in the molecular characterization of SCLC has provided novel insight into the biology of this disease and raises hope for a paradigm shift in the treatment of SCLC. We and others have identified activation of MYC as a driver of susceptibility to Aurora kinase inhibition in SCLC cells and tumors that translates into a therapeutic option for the targeted treatment of MYC-driven SCLC...
July 24, 2017: Cell Cycle
https://www.readbyqxmd.com/read/28737465/the-effect-of-ozone-gas-sterilization-on-the-properties-and-cell-compatibility-of-electrospun-polycaprolactone-scaffolds
#14
Carolina Fracalossi Rediguieri, Paul A De Bank, Maria Helena Ambrosio Zanin, Patrícia Leo, Natalia Neto Pereira Cerize, Adriano Marim de Oliveira, Terezinha de Jesus Andreoli Pinto
The growing area of tissue engineering has the potential to alleviate the shortage of tissues and organs for transplantation, and electrospun biomaterial scaffolds are extremely promising devices for translating engineered tissues into a clinical setting. However, to be utilized in this capacity, these medical devices need to be sterile. Traditional methods of sterilization are not always suitable for biomaterials, especially as many commonly used biomedical polymers are sensitive to chemical-, thermal- or radiation-induced damage...
July 24, 2017: Journal of Biomaterials Science. Polymer Edition
https://www.readbyqxmd.com/read/28737273/recovery-free-of-heart-failure-after-acute-coronary-syndrome-and-coronary-revascularization
#15
Alec Falkenham, Manu K Saraswat, Chloe Wong, Kareem Gawdat, Tanya Myers, Jahanara Begum, Karen J Buth, Ian Haidl, Jean Marshall, Jean-Francois Légaré
AIMS: Previous studies have examined risk factors for the development of heart failure (HF) subsequent to acute coronary syndrome (ACS). Our study seeks to clarify the clinical variables that best characterize patients who remain free from HF after coronary artery bypass grafting (CABG) surgery for ACS to determine novel biological factors favouring freedom from HF in prospective translational studies. METHODS AND RESULTS: Nova Scotia residents (1995-2012) undergoing CABG within 3 weeks of ACS were included...
July 24, 2017: ESC Heart Failure
https://www.readbyqxmd.com/read/28737182/micro-and-nano-patterned-elastin-like-polypeptide-hydrogels-for-stem-cell-culture
#16
A Paul, M Stührenberg, S Chen, D Rhee, W-K Lee, T W Odom, S C Heilshorn, A Enejder
We show that submicron-sized patterns can be imprinted into soft, recombinant-engineered protein hydrogels (here elastin-like proteins, ELP) by transferring wavy patterns from polydimethylsiloxane (PDMS) molds. The high-precision topographical tunability of the relatively stiff PDMS is translated to a bio-responsive, soft material, enabling topographical cell response studies at elastic moduli matching those of tissues. Aligned and unaligned wavy patterns with mold periodicities of 0.24-4.54 μm were imprinted and characterized by coherent anti-Stokes Raman scattering and atomic force microscopy...
July 24, 2017: Soft Matter
https://www.readbyqxmd.com/read/28737175/natural-variation-of-macrophage-activation-as-disease-relevant-phenotype-predictive-of-inflammation-and-cancer-survival
#17
Konrad Buscher, Erik Ehinger, Pritha Gupta, Akula Bala Pramod, Dennis Wolf, George Tweet, Calvin Pan, Charles D Mills, Aldons J Lusis, Klaus Ley
Although mouse models exist for many immune-based diseases, the clinical translation remains challenging. Most basic and translational studies utilize only a single inbred mouse strain. However, basal and diseased immune states in humans show vast inter-individual variability. Here, focusing on macrophage responses to lipopolysaccharide (LPS), we use the hybrid mouse diversity panel (HMDP) of 83 inbred strains as a surrogate for human natural immune variation. Since conventional bioinformatics fail to analyse a population spectrum, we highlight how gene signatures for LPS responsiveness can be derived based on an Interleukin-12β and arginase expression ratio...
July 24, 2017: Nature Communications
https://www.readbyqxmd.com/read/28737113/micrornas-roles-in-regulating-neuroinflammation
#18
Andrew D Gaudet, Laura K Fonken, Linda R Watkins, Randy J Nelson, Phillip G Popovich
MicroRNAs (miRNAs) are small noncoding RNAs that broadly affect cellular and physiological function in all multicellular organisms. Here, the role of miRNAs in neuroinflammation is considered. miRNAs are 21- to 23-oligonucleotide RNAs that regulate translation of specific RNAs by binding to complementary regulatory RNA sequences, thereby causing mRNA degradation or sequestration. More than 5000 miRNAs likely exist in humans, and each miRNA binds an average of 200 RNAs. Specific immunomodulatory miRNAs can regulate a set of RNAs in a coordinated manner, suggesting that effective miRNA-based therapeutic manipulations for neuroinflammatory conditions may be revealed...
July 1, 2017: Neuroscientist: a Review Journal Bringing Neurobiology, Neurology and Psychiatry
https://www.readbyqxmd.com/read/28736855/-lnc-ing-wnt-in-female-reproductive-cancers-therapeutic-potential-of-long-non-coding-rnas-in-wnt-signaling
#19
REVIEW
Mei S Ong, Wanpei Cai, Yi Yuan, Hin C Leong, Tuan Z Tan, Asad Mohammad, Ming L You, Frank Arfuso, Boon C Goh, Sudha Warrier, Gautam Sethi, Nicholas S Tolwinski, Peter E Lobie, Celestial T Yap, Shing C Hooi, Ruby Y Huang, Alan P Kumar
Recent discoveries in the non-coding genome have challenged the original central dogma of molecular biology; non-coding RNAs and related processes have been found to be important in regulating gene expression. MicroRNAs (miRNAs) and long non-coding RNAs (lncRNAs) are amongst some that have gained attention recently in human diseases, including cancer, with the involvement of many more ncRNAs waiting to be discovered. Non-coding RNAs (ncRNAs) are a group of ribonucleic acids transcribed from regions of the human genome, which do not become translated into proteins, despite having essential roles in cellular physiology...
July 24, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28736738/preserving-and-restoring-bone-with-continuous-insulin-infusion-therapy-in-a-mouse-model-of-type-1-diabetes
#20
Jeffry S Nyman, Evangelia Kalaitzoglou, R Clay Bunn, Sasidhar Uppuganti, Kathryn M Thrailkill, John L Fowlkes
Those with type 1 diabetes (T1D) are more likely to suffer a fracture than age- and sex-matched individuals without diabetes, despite daily insulin therapy. In rodent studies examining the effect of bone- or glucose-targeting therapies on preventing the T1D-related decrease in bone strength, insulin co-therapy is often not included, despite the known importance of insulin signaling to bone mass accrual. Therefore, working toward a relevant pre-clinical model of diabetic bone disease, we assessed the effect of continuous subcutaneous insulin infusion (CSII) therapy at escalating doses on preserving bone and the effect of delayed CSII on rescuing the T1D-related bone deterioration in an established murine model of T1D...
December 2017: Bone Reports
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