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https://www.readbyqxmd.com/read/28538206/spectroscopic-far-or-terahertz-mid-infrared-and-raman-investigation-thermal-analysis-and-biological-activity-of-piplartine
#1
Anubha Srivastava, T Karthick, B D Joshi, Rashmi Mishra, Poonam Tandon, A P Ayala, Javier Ellena
Research in the field of medicinal plants including Piper species like long pepper (Piper longum L.- Piperaceae) is increasing all over the world due to its use in traditional and Ayurvedic medicine. Piplartine (piperlongumine, 5,6-dihydro-1-[(2E)-1-oxo-3-(3,4,5-trimethoxyphenyl)-2-propenyl]-2(1H)-pyridinone), a biologically active alkaloid/amide was isolated from the phytochemical investigations of Piper species, as long pepper. This alkaloid has cytotoxic, anti-fungal, anti-diabetic, anti-platelet aggregation, anti-tumoral, anxiolytic, anti-depressant, anti-leishmanial, and genotoxic activities, but, its anticancer property is the most promising and has been widely explored...
May 5, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28538014/precision-medicine-in-pediatric-rheumatology
#2
Joo Guan Yeo, Chin Teck Ng, Salvatore Albani
PURPOSE OF REVIEW: Precision medicine is the tailoring of medical care to subcategories of disease. In pediatric rheumatology, these subcategories must first be defined by their specific molecular immunological profiles, and then the effects of growth and puberty, developmental immunological changes, and differences in treatment options and adherence considered when designing therapeutic strategies. In the present review, we summarize the unmet needs in pediatric rheumatology before such precision medical care can be effectively delivered to affected patients...
May 22, 2017: Current Opinion in Rheumatology
https://www.readbyqxmd.com/read/28537738/a-peptoid-square-helix-via-synergistic-control-of-backbone-dihedral-angles
#3
Benjamin Craig Gorske, Emily M Mumford, Charles G Gerrity, Imelda Ko
The continued expansion of the fields of macromolecular chemistry and nanoscience has motivated the development of new secondary structures that can serve as architectural elements of innovative materials, molecular machines, biological probes, and even commercial medicines. Synthetic foldamers are particularly attractive systems for developing such elements because they are specifically designed to facilitate synthetic manipulation and functional diversity. However, relatively few predictive design principles exist that permit both rational and modular control of foldamer secondary structure, while maintaining the capacity for facile diversification of displayed functionality...
May 24, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28535585/good-laboratory-standards-for-clinical-next-generation-sequencing-cancer-panel-tests
#4
REVIEW
Jihun Kim, Woong-Yang Park, Nayoung K D Kim, Se Jin Jang, Sung-Min Chun, Chang-Ohk Sung, Jene Choi, Young-Hyeh Ko, Yoon-La Choi, Hyo Sup Shim, Jae-Kyung Won
Next-generation sequencing (NGS) has recently emerged as an essential component of personalized cancer medicine due to its high throughput and low per-base cost. However, no sufficient guidelines for implementing NGS as a clinical molecular pathology test are established in Korea. To ensure clinical grade quality without inhibiting adoption of NGS, a taskforce team assembled by the Korean Society of Pathologists developed laboratory guidelines for NGS cancer panel testing procedures and requirements for clinical implementation of NGS...
May 2017: Journal of Pathology and Translational Medicine
https://www.readbyqxmd.com/read/28535467/molecular-approaches-to-the-diagnosis-and-monitoring-of-production-diseases-in-pigs
#5
REVIEW
Timothy A Giles, Aouatif Belkhiri, Paul A Barrow, Neil Foster
Production disease in pigs is caused by a variety of different pathogens, mainly enteric and respiratory and can result in significant economic loss. Other factors such as stress, poor husbandry and nutrition can also contribute to an animal's susceptibility to disease. Molecular biomarkers of production disease could be of immense value by improving diagnosis and risk analysis to determine best practice with an impact on increased economic output and animal welfare. In addition to the use of multiplex PCR or microarrays to detect individual or mixed pathogens during infection, these technologies can also be used to monitor the host response to infection via gene expression...
May 17, 2017: Research in Veterinary Science
https://www.readbyqxmd.com/read/28534819/ginsenoside-rb2-alleviates-hepatic-lipid-accumulation-by-restoring-autophagy-via-induction-of-sirt1-and-activation-of-ampk
#6
Qi Huang, Ting Wang, Liu Yang, He-Yao Wang
Although Panax ginseng is a famous traditional Chinese medicine and has been widely used to treat a variety of metabolic diseases including hyperglycemia, hyperlipidemia, and hepatosteatosis, the effective mediators and molecular mechanisms remain largely unknown. In this study we found that ginsenoside Rb2, one of the major ginsenosides in Panax ginseng, was able to prevent hepatic lipid accumulation through autophagy induction both in vivo and in vitro. Treatment of male db/db mice with Rb2 significantly improved glucose tolerance, decreased hepatic lipid accumulation, and restored hepatic autophagy...
May 19, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28534676/applications-of-raman-spectroscopy-in-biopharmaceutical-manufacturing-a-short-review
#7
Kevin Buckley, Alan G Ryder
The production of active pharmaceutical ingredients (APIs) is currently undergoing its biggest transformation in a century. The changes are based on the rapid and dramatic introduction of protein- and macromolecule-based drugs (collectively known as biopharmaceuticals) and can be traced back to the huge investment in biomedical science (in particular in genomics and proteomics) that has been ongoing since the 1970s. Biopharmaceuticals (or biologics) are manufactured using biological-expression systems (such as mammalian, bacterial, insect cells, etc...
June 2017: Applied Spectroscopy
https://www.readbyqxmd.com/read/28530328/-the-israeli-rat-genome-center
#8
REVIEW
Yoram Yagil, Chana Yagil
The Israeli Rat Genome Center, which is located at the Barzilai Medical Center Campus of the Faculty of Health Sciences of the Ben-Gurion University of the Negev in Ashkelon, was established to provide a repository of unique genetic strains of rats that were created in Israel and that simulate complex diseases. The Center incorporates models of: salt-sensitive hypertension (SBN/y and SBH/y rats), type 2 diabetes (CDr and CDs rats), combined hypertension and diabetes (CRDH) and additional genetic strains (transgenics, consomics, congenics)...
August 2016: Harefuah
https://www.readbyqxmd.com/read/28529995/celebrating-more-than-a-century-of-research-on-antibodies-affirmation-through-negation-via-complex-formation
#9
Neil S Greenspan
In this brief commentary, I highlight the remarkable properties of antibodies (also known as immunoglobulins) revealed by more than 100 years of biomedical research. Since antibodies can be elicited through one or another means against almost any molecule or macromolecule, the universe of antibodies represents a sort of molecular mirror for the totality of molecules that make life possible. Consequently, as recounted below, antibodies play a role in almost every aspect of medicine and biomedical research.
2017: Pathogens & Immunity
https://www.readbyqxmd.com/read/28529793/crystal-structure-and-hirshfeld-surface-analysis-of-3-oxours-12-ene-27a-28-dioic-acid-quafrinoic-acid
#10
Jean Jules Bankeu Kezetas, Stéphanie Dietagoum Madjouka, Rajesh Kumar, Muhammad Shaiq Ali, Bruno Lenta Njakou, Sammer Yousuf
The title compound, C30H44O5, is a penta-cyclic triterpene isolated from the Cameroonian medicinal plant Nauclea Pobeguinii and known as quafrinoic acid. The mol-ecule is composed of five fused six-membered rings, four of which adopt a chair conformation and one a half-chair conformation. Intra-molecular C-H⋯O hydrogen-bond inter-actions exist, which generate S6 and S8 rings. In the crystal, mol-ecules are linked by pairs of O-H⋯O hydrogen bonds, linking R2(2)(8) rings into chains running parallel to the a axis; these chains are further connected into layers parallel to the ab plane by C-H⋯O hydrogen bonds...
May 1, 2017: Acta Crystallographica. Section E, Crystallographic Communications
https://www.readbyqxmd.com/read/28529177/senecio-brasiliensis-impairs-eclosion-rate-and-induces-apoptotic-cell-death-in-larvae-of-drosophila-melanogaster
#11
Giulianna Echeverria Macedo, Karen Kich Gomes, Nathane Rosa Rodrigues, Illana Kemmerich Martins, Gabriel da Luz Wallau, Nélson Rodrigues de Carvalho, Litiele Cezar da Cruz, Dennis Guilherme da Costa Silva, Aline Augusti Boligon, Jeferson Luis Franco, Thaís Posser
Senecio brasilienis (Spreng) Less., is a species native from Brazil, popularly known as "maria mole", and known to induce hepatotoxicity due to its high content of Pyrrolizidine alkaloids. Despite its toxicity, this plant is widely used in Brazilian folk medicine. Considering the antagonizing effects described for S. brasiliensis, we describe here molecular markers involved in the toxicity of hydroalcoholic extract from leaves of S. brasiliensis (HESB) in Drosophila melanogaster. Phytochemical analysis of HESB revealed the presence of phenolic acids and flavonoids...
May 18, 2017: Comparative Biochemistry and Physiology. Toxicology & Pharmacology: CBP
https://www.readbyqxmd.com/read/28528952/an-overview-of-natural-renewable-bio-polymer-lignin-towards-nano-and-biotechnological-applications
#12
REVIEW
Selvaraj Mohana Roopan
Lignin were said to be major bio-polymer next to cellulose which is an abundant biopolymer. This type of lignin was mostly isolated from woods which were named after their physical, morphological appearances and majorly on extracting sources. Still now there are very few reports on isolation, identification of pure lignin and isolating pathways are also not well defined. Molecular weight of lignin varies from thousands to ten thousands which are not explored accurately. Even-though lignins were surrounded by these many hurdles it has various application studies which were studied and reported...
May 18, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28527995/effect-of-aconitum-coreanum-polysaccharide-and-its-sulphated-derivative-on-the-migration-of-human-breast-cancer-mda-mb-435s-cell
#13
Yandong Zhang, Wei Wu, Lihua Kang, Dehai Yu, Chunshui Liu
Polysaccharides extracted from medicinal plants possess multiple functions. However, the inhibitory capacity of polysaccharides on the metastasis of breast cancer remains unclear. In the present study, we investigated the inhibitory activity of Aconitum coreanum polysaccharide (ACP1) and its sulphated derivative ACP1-s on migratory behaviour of human breast cancer cells MDA-MB-435s and evaluated the underlying molecular mechanism. The data from Transwell assay indicated that ACP1 and ACP1-s caused a significant inhibition of MDA-MB-435s cell migration in vitro...
May 17, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28525957/determining-dominant-driving-forces-affecting-controlled-protein-release-from-polymeric-nanoparticles
#14
Josh Smith, Kayla G Sprenger, Rick Liao, Andrea Joseph, Elizabeth Nance, Jim Pfaendtner
Enzymes play a critical role in many applications in biology and medicine as potential therapeutics. One specific area of interest is enzyme encapsulation in polymer nanostructures, which have applications in drug delivery and catalysis. A detailed understanding of the mechanisms governing protein/polymer interactions is crucial for optimizing the performance of these complex systems for different applications. Using a combined computational and experimental approach, this study aims to quantify the relative importance of molecular and mesoscale driving forces to protein release from polymeric nanoparticles...
May 19, 2017: Biointerphases
https://www.readbyqxmd.com/read/28524769/machine-learning-for-epigenetics-and-future-medical-applications
#15
Lawrence B Holder, M Muksitul Haque, Michael K Skinner
Understanding epigenetic processes holds immense promise for medical applications. Advances in Machine Learning (ML) are critical to realize this promise. Previous studies used epigenetic data sets associated with the germline transmission of epigenetic transgenerational inheritance of disease and novel ML approaches to predict genome-wide locations of critical epimutations. A combination of Active Learning (ACL) and Imbalanced Class Learning (ICL) was used to address past problems with ML to develop a more efficient feature selection process and address the imbalance problem in all genomic data sets...
May 19, 2017: Epigenetics: Official Journal of the DNA Methylation Society
https://www.readbyqxmd.com/read/28524668/emerging-trends-in-micro-and-nanoscale-technologies-in-medicine-from-basic-discoveries-to-translation
#16
Mario M Alvarez, Joanna Aizenberg, Mostafa Analoui, Anne M Andrews, Gili Bisker, Edward S Boyden, Roger D Kamm, Jeffrey M Karp, David J Mooney, Rahmi Oklu, Dan Peer, Michelle Stolzoff, Michael S Strano, Grissel Trujillo-de Santiago, Thomas J Webster, Paul S Weiss, Ali Khademhosseini
We discuss the state of the art and innovative micro- and nanoscale technologies that are finding niches and opening up new opportunities in medicine, particularly in diagnostic and therapeutic applications. We take the design of point-of-care applications and the capture of circulating tumor cells as illustrative examples of the integration of micro- and nanotechnologies into solutions of diagnostic challenges. We describe several novel nanotechnologies that enable imaging cellular structures and molecular events...
May 19, 2017: ACS Nano
https://www.readbyqxmd.com/read/28524624/pulmonary-arterial-hypertension-progress-in-understanding-the-disease-and-prioritizing-strategies-for-drug-development
#17
REVIEW
P Ghataorhe, C J Rhodes, L Harbaum, M Attard, J Wharton, M R Wilkins
Pulmonary arterial hypertension (PAH), at one time a largely overlooked disease, is now the subject of intense study in many academic and biotech groups. The availability of new treatments has increased awareness of the condition. This in turn has driven a change in the demographics of PAH, with an increase in the mean age at diagnosis. The diagnosis of PAH in more elderly patients has highlighted the need for careful phenotyping of patients and for further studies to understand how best to manage pulmonary hypertension associated with, for example, left heart disease...
May 19, 2017: Journal of Internal Medicine
https://www.readbyqxmd.com/read/28524095/pkc-in-regenerative-therapy-new-insights-for-old-targets
#18
REVIEW
Marta Rui, Rita Nasti, Emanuele Bignardi, Serena Della Volpe, Giacomo Rossino, Daniela Rossi, Simona Collina
Effective therapies for chronic or non-healing wounds are still lacking. These tissue insults often result in severe clinical complications (i.e., infections and/or amputation) and sometimes lead to patient death. Accordingly, several research groups have focused their efforts in finding innovative and powerful therapeutic strategies to overcome these issues. On the basis of these considerations, the comprehension of the molecular cascades behind these pathological conditions could allow the identification of molecules against chronic wounds...
May 18, 2017: Pharmaceuticals
https://www.readbyqxmd.com/read/28523274/identification-of-braf-positive-cases-based-on-whole-slide-image-analysis
#19
Vlad Popovici, Aleš Křenek, Eva Budinská
A key requirement for precision medicine is the accurate identification of patients that would respond to a specific treatment or those that represent a high-risk group, and a plethora of molecular biomarkers have been proposed for this purpose during the last decade. Their application in clinical settings, however, is not always straightforward due to relatively high costs of some tests, limited availability of the biological material and time, and procedural constraints. Hence, there is an increasing interest in constructing tissue-based surrogate biomarkers that could be applied with minimal overhead directly to histopathology images and which could be used for guiding the selection of eventual further molecular tests...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28523098/incb24360-epacadostat-a-highly-potent-and-selective-indoleamine-2-3-dioxygenase-1-ido1-inhibitor-for-immuno-oncology
#20
Eddy W Yue, Richard Sparks, Padmaja Polam, Dilip Modi, Brent Douty, Brian Wayland, Brian Glass, Amy Takvorian, Joseph Glenn, Wenyu Zhu, Michael Bower, Xiangdong Liu, Lynn Leffet, Qian Wang, Kevin J Bowman, Michael J Hansbury, Min Wei, Yanlong Li, Richard Wynn, Timothy C Burn, Holly K Koblish, Jordan S Fridman, Tom Emm, Peggy A Scherle, Brian Metcalf, Andrew P Combs
A data-centric medicinal chemistry approach led to the invention of a potent and selective IDO1 inhibitor 4f, INCB24360 (epacadostat). The molecular structure of INCB24360 contains several previously unknown or underutilized functional groups in drug substances, including a hydroxyamidine, furazan, bromide, and sulfamide. These moieties taken together in a single structure afford a compound that falls outside of "drug-like" space. Nevertheless, the in vitro ADME data is consistent with the good cell permeability and oral bioavailability observed in all species (rat, dog, monkey) tested...
May 11, 2017: ACS Medicinal Chemistry Letters
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