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https://www.readbyqxmd.com/read/29357311/d-amino-acids-in-molecular-evolution-in-space-absolute-asymmetric-photolysis-and-synthesis-of-amino-acids-by-circularly-polarized-light
#1
REVIEW
Haruna Sugahara, Cornelia Meinert, Laurent Nahon, Nykola C Jones, Søren V Hoffmann, Kenji Hamase, Yoshinori Takano, Uwe J Meierhenrich
Living organisms on the Earth almost exclusively use l-amino acids for the molecular architecture of proteins. The biological occurrence of d-amino acids is rare, although their functions in various organisms are being gradually understood. A possible explanation for the origin of biomolecular homochirality is the delivery of enantioenriched molecules via extraterrestrial bodies, such as asteroids and comets on early Earth. For the asymmetric formation of amino acids and their precursor molecules in interstellar environments, the interaction with circularly polarized photons is considered to have played a potential role in causing chiral asymmetry...
January 18, 2018: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29322640/conserved-roles-of-osiris-genes-in-insect-development-polymorphism-and-protection
#2
Chris R Smith, Claire Morandin, Moataz Noureddine, Swati Pant
Much of the variation among insects is derived from the different ways that chitin has been molded to form rigid structures, both internal and external. In this study, we identify a highly conserved expression pattern in an insect-only gene family, the Osiris genes, that is essential for development, but also plays a significant role in phenotypic plasticity and in immunity/toxicity responses. The majority of Osiris genes exist in a highly syntenic cluster, and the cluster itself appears to have arisen very early in the evolution of insects...
January 10, 2018: Journal of Evolutionary Biology
https://www.readbyqxmd.com/read/29289165/the-oxford-space-environment-goniometer-a-new-experimental-setup-for-making-directional-emissivity-measurements-under-a-simulated-space-environment
#3
T J Warren, N E Bowles, K Donaldson Hanna, I R Thomas
Measurements of the light scattering behaviour of the regoliths of airless bodies via remote sensing techniques in the Solar System, across wavelengths from the visible to the far infrared, are essential in understanding their surface properties. A key parameter is knowledge of the angular behaviour of scattered light, usually represented mathematically by a phase function. The phase function is believed to be dependent on many factors including the following: surface composition, surface roughness across all length scales, and the wavelength of radiation...
December 2017: Review of Scientific Instruments
https://www.readbyqxmd.com/read/29275037/open-surgical-implantation-of-a-viable-intact-cryopreserved-human-placental-membrane-for-the-treatment-of-recalcitrant-plantar-fasciitis-case-report-with-greater-than-2-year-follow-up-duration
#4
Xingbo P Sun, Amy G Wilson, Georgina M Michael
Plantar fasciitis is one of the most common conditions encountered by a podiatric physician. Although most individuals respond well to traditional conservative and surgical remedies, a portion of patients will exhaust all available treatment options and will experience ongoing pain that can ultimately affect their quality of life. There has been an increase in scientific and clinical research surrounding the medical use of human placental membranes (HPMs) and many of these point-of-care allografts are now commercially available...
December 20, 2017: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/29273194/evaluation-of-clinical-and-radiographic-indices-as-predictors-of-osteoporotic-fractures-a-10-year-longitudinal-study
#5
Grethe B Jonasson, Valter Sundh, Magnus Hakeberg, Margareta Ahlqwist, Lauren Lissner, Dominique Hange
OBJECTIVES: The aim of the study was to evaluate 2 radiographic and 3 clinical indices as predictors of future osteoporotic fractures. STUDY DESIGN: In a prospective, longitudinal study with a 10-year fracture follow-up, the 2 radiographic indices mandibular cortical erosion (normal, mild/moderate erosion, and severe erosion of the inferior cortex) and cortex thickness were assessed using panoramic radiographs of 411 women, age 62 to 78 years. The clinical indices were the fracture assessment tool FRAX, the osteoporosis index of risk (OSIRIS), and the osteoporosis self-assessment tool (OST)...
November 21, 2017: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
https://www.readbyqxmd.com/read/29245303/viable-placental-allograft-as-a-biological-dressing-in-the-clinical-management-of-full-thickness-thermal-occupational-burns-two-case-reports
#6
Eric L Johnson, Elisabet K Tassis, Georgina M Michael, Susan G Whittinghill
RATIONALE: Occupational burn injuries can be detrimental and difficult to manage. The majority of complex cases are referred and managed at regional burn centers where access to specialized care is available. As an alternative to hospitalization with staged surgical procedures, placental products may be used for outpatient medical management of these common burn injuries, especially if access to a regional burn center is limited or restricted.Fresh amnion has been a treatment of choice in burns for more than 100 years...
December 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29225432/molecular-docking-based-screening-of-a-simulated-hif-1-protein-model-for-potential-inhibitors
#7
Mundla Sri Latha, Madhu Sudhana Saddala
Hypoxia inducible factor-1(HIF-1) is a bHLH-family transcription factor that control genes involved in glucolysis, angiogenesis, migration, as well as invasion factors that are important for tumor progression and metastasis. HIF-1, a hetero dimer of HIF-1α and HIF-1β, binds to the hypoxia responsive genes, such as vascular endothelial growth factor (VEGF). It is one the molecular target for angiogenesis. A series of Chalcone - like compounds described that preferentially inhibit HIF-1 dimer, which can interact with amino acids within the active site of the protein...
2017: Bioinformation
https://www.readbyqxmd.com/read/29140470/database-resources-of-the-national-center-for-biotechnology-information
#8
(no author information available yet)
The National Center for Biotechnology Information (NCBI) provides a large suite of online resources for biological information and data, including the GenBank® nucleic acid sequence database and the PubMed database of citations and abstracts for published life science journals. The Entrez system provides search and retrieval operations for most of these data from 39 distinct databases. The E-utilities serve as the programming interface for the Entrez system. Augmenting many of the Web applications are custom implementations of the BLAST program optimized to search specialized data sets...
November 13, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/29133211/beta-lactam-resistance-among-enterobacteriaceae-in-cambodia-the-four-year-itch
#9
REVIEW
Yannick Caron, Rattanak Chheang, Puthea Nop, Soda Meng, Sébastien Boyer, Arnaud Tarantola, Alexandra Kerléguer
Although antibiotics are too often used inappropriately in Cambodia, few data have been published on antimicrobial resistance in this country. Epidemic dissemination and the transfer of resistance genes to other bacterial species put the population at risk. The aim of this study was to evaluate the frequency and characteristics of extended-spectrum beta-lactamase (ESBL) enterobacteriaceae (ESBL-E) isolated in consecutive samples tested at Institut Pasteur du Cambodge (IPC) over a four-year period (2012-2015)...
November 10, 2017: International Journal of Infectious Diseases: IJID
https://www.readbyqxmd.com/read/29021218/transcriptomic-analysis-of-octanoic-acid-response-in-drosophila-sechellia%C3%A2-using-rna-sequencing
#10
Stephen M Lanno, Sara M Gregory, Serena J Shimshak, Maximilian K Alverson, Kenneth Chiu, Arden L Feil, Morgan G Findley, Taylor E Forman, Julia T Gordon, Josephine Ho, Joanna L Krupp, Ivy Lam, Josh Lane, Samuel C Linde, Ashley E Morse, Serena Rusk, Robie Ryan, Avva Saniee, Ruchi B Sheth, Jennifer J Siranosian, Lalitpatr Sirichantaropart, Sonya R Sternlieb, Christina M Zaccardi, Joseph D Coolon
The dietary specialist fruit fly Drosophila sechellia has evolved to specialize on the toxic fruit of its host plant Morinda citrifolia Toxicity of Morinda fruit is primarily due to high levels of octanoic acid (OA). Using RNA interference (RNAi), prior work found that knockdown of Osiris family genes Osiris 6 (Osi6), Osi7, and Osi8 led to increased susceptibility to OA in adult D. melanogaster flies, likely representing genes underlying a Quantitative Trait Locus (QTL) for OA resistance in D. sechellia While genes in this major effect locus are beginning to be revealed, prior work has shown at least five regions of the genome contribute to OA resistance...
October 12, 2017: G3: Genes—Genomes—Genetics
https://www.readbyqxmd.com/read/28970106/assessment-of-predictivity-of-volatile-organic-compounds-carcinogenicity-and-mutagenicity-by-freeware-in-silico-models
#11
Lília Ribeiro Guerra, Alessandra Mendonça Teles de Souza, Juliana Alves Côrtes, Viviane de Oliveira Freitas Lione, Helena Carla Castro, Gutemberg Gomes Alves
The application of in silico methods is increasing on toxicological risk prediction for human and environmental health. This work aimed to evaluate the performance of three in silico freeware models (OSIRIS v.2.0, LAZAR, and Toxtree) on the prediction of carcinogenicity and mutagenicity of thirty-eight volatile organic compounds (VOC) related to chemical risk assessment for occupational exposure. Theoretical data were compared with assessments available in international databases. Confusion matrices and ROC curves were used to evaluate the sensitivity, specificity, and accuracy of each model...
September 29, 2017: Regulatory Toxicology and Pharmacology: RTP
https://www.readbyqxmd.com/read/28966254/genotoxic-evaluation-of-duloxetine-ii-the-effect-on-the-number-of-sister-chromatid-exchanges-the-mitotic-index-and-the-proliferation-kinetics-in-mouse-bone-marrow
#12
Eduardo Madrigal-Bujaidar, Isela Álvarez-González, Eduardo Osiris Madrigal-Santillán, José A Morales-González, Andrea Torres-Gómez, José Melesio Cristóbal-Luna
Duloxetine is an antidepressant which has showed valuable results, particularly in patients with major depression. This type of drugs is known to require genotoxic studies as part of their preclinical safety evaluation. In the case of duloxetine, however, there have been controversial results. Therefore, we considered it worthwhile to extend studies on the matter in an attempt to reach a conclusion. The present assay was made in mouse bone marrow to evaluate the capacity of the drug to induce sister chromatid exchanges (SCE), as well as to modify the proliferation kinetics and the mitotic index...
2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28894629/isolation-characterization-and-in-silico-docking-studies-of-synergistic-estrogen-receptor-a-anticancer-polyphenols-from-syzygium-alternifolium-wt-walp
#13
Pulicherla Yugandhar, Konidala Kranthi Kumar, Pabbaraju Neeraja, Nataru Savithramma
AIM: This study aims to isolate, characterize, and in silico evaluate of anticancer polyphenols from different parts of Syzygium alternifolium. MATERIALS AND METHODS: The polyphenols were isolated by standard protocol and characterized using Fourier-transform infrared (FT-IR), High performance liquid chromatography - Photodiode array detector coupled with Electrospray ionization - mass spectrometry (MS/MS). The compounds were elucidated based on retention time and molecular ions (m/z) either by [M+H](+)/[M-H](-) with the comparison of standard phenols as well as ReSpect software tool...
July 2017: Journal of Intercultural Ethnopharmacology
https://www.readbyqxmd.com/read/28887014/osiris9a-is-a-major-component-of-silk-fiber-in-lepidopteran-insects
#14
Chun Liu, Wenbo Hu, Tingcai Cheng, Zhangchuan Peng, Kazuei Mita, Qingyou Xia
In a previous high-throughput proteomics study, it was found that the silkworm cocoon contains hundreds of complex proteins, many of which have unknown functions, in addition to fibroins, sericins, and some protease inhibitors. Osiris was one of the proteins with no known function. In this study, we identified the Osiris gene family members and constructed a phylogenetic tree based on the sequences from different species. Our results indicate that the Osiris9 gene subfamily contains six members; it is specifically expressed in lepidopteran insects and has evolved by gene duplication...
October 2017: Insect Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28776297/physiological-mechanisms-of-a-wetland-plant-echinodorus-osiris-rataj-to-cadmium-detoxification
#15
Peng Zhang, He Huang, Wanru Liu, Chaolan Zhang
Physiological responses of Echinodorus osiris Rataj plant under cadmium (Cd) stress (5 and 15 mg L(-1)) were studied by researching the change of non-enzymatic antioxidants and the exudation of root organic acids. There was a significant increase of ascorbic acid, glutathione, and non-protein thiols in the plant, and the increment was much obvious in roots than that in leaves with increased Cd stress. The accumulation of Cd was associated with mitochondrial structural damages in roots, while the organelle structure, such as chloroplast, in leaves remains intact...
September 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28746736/defensive-repertoire-of-drosophila-larvae-in-response-to-toxic-fungi
#16
Monika Trienens, Ken Kraaijeveld, Bregje Wertheim
Chemical warfare including insecticidal secondary metabolites is a well-known strategy for environmental microbes to monopolize a food source. Insects in turn have evolved behavioural and physiological defences to eradicate or neutralize the harmful microorganisms. We studied the defensive repertoire of insects in this interference competition by combining behavioural and developmental assays with whole-transcriptome time-series analysis. Confrontation with the toxic filamentous fungus Aspergillus nidulans severely reduced the survival of Drosophila melanogaster larvae...
July 26, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28480389/evaluation-of-the-anti-inflammatory-capacity-of-beta-sitosterol-in-rodent-assays
#17
Rogelio Paniagua-Pérez, Gabriela Flores-Mondragón, Celia Reyes-Legorreta, Brígida Herrera-López, Isabel Cervantes-Hernández, Osiris Madrigal-Santillán, José Antonio Morales-González, Isela Álvarez-González, Eduardo Madrigal-Bujaidar
BACKGROUND: Beta-sitosterol (BS) is a compound discovered to be present in numerous plants. A number of interesting biomedical properties have been attributed to BS, including immuno-modulating and anti-inflammatory activities. Therefore, the aim of this report was to evaluate its anti-inflammatory capacity by applying various rodent experimental tests. METHODS: To carry out the objective of the study we applied the methods indicated here. Two of the adopted methods were based on the passive reverse Arthus reaction: the rat paw edema test and the rat pleurisy assay...
2017: African Journal of Traditional, Complementary, and Alternative Medicines: AJTCAM
https://www.readbyqxmd.com/read/28374912/a-computational-approach-to-identify-a-potential-alternative-drug-with-its-positive-impact-toward-pmp22
#18
Ashish Kumar Agrahari, George Priya Doss C
Mutations in the Peripheral Myelin Protein 22 (PMP22) leads to Charcot Marie Tooth type 1A (CMT1A, a subtype of CMT1) disease which is the most common inherited neuropathy of peripheral nervous system. In the present study, we used series of in silico prediction methods to screen and identify the most deleterious non-synonymous SNPs (nsSNPs) in PMP22 gene. Out of 48 nsSNPs, five nsSNPs (L16P, L19P, T23R, W28R, and L147R) associated with PMP22 were predicted to be highly deleterious and destabilizing the protein...
April 4, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28330089/discovery-of-potential-alk-inhibitors-by-virtual-screening-approach
#19
Anish Kumar, V Shanthi, K Ramanathan
Crizotinib is an anticancer drug used for the treatment of non-small cell lung cancer. Evidences available suggest that there is a development of an acquired resistance against crizotinib action due to the emergence of several mutations in the ALK gene. It is therefore necessary to develop potent anti-cancer drugs for the treatment of crizotinib resistance non-small cell lung cancer types. In the present study, a novel class of lead molecule was identified using virtual screening, molecular docking and molecular dynamic approach...
June 2016: 3 Biotech
https://www.readbyqxmd.com/read/28316240/heme-gazing-illuminating-eukaryotic-heme-trafficking-dynamics-and-signaling-with-fluorescent-heme-sensors
#20
David A Hanna, Osiris Martinez-Guzman, Amit R Reddi
Heme (iron protoporphyrin IX) is an essential protein prosthetic group and signaling molecule required for most life on Earth. All heme-dependent processes require the dynamic and rapid mobilization of heme from sites of synthesis or uptake to hemoproteins present in virtually every subcellular compartment. The cytotoxicity and hydrophobicity of heme necessitate that heme mobilization be carefully controlled to mitigate the deleterious effects of this essential toxin. Indeed, a number of disorders, including certain cancers, cardiovascular diseases, and aging and age-related neurodegenerative diseases, are tied to defects in heme homeostasis...
April 4, 2017: Biochemistry
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