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https://www.readbyqxmd.com/read/28106795/bio-based-aromatic-epoxy-monomers-for-thermoset-materials
#1
REVIEW
Feifei Ng, Guillaume Couture, Coralie Philippe, Bernard Boutevin, Sylvain Caillol
The synthesis of polymers from renewable resources is a burning issue that is actively investigated. Polyepoxide networks constitute a major class of thermosetting polymers and are extensively used as coatings, electronic materials, adhesives. Owing to their outstanding mechanical and electrical properties, chemical resistance, adhesion, and minimal shrinkage after curing, they are used in structural applications as well. Most of these thermosets are industrially manufactured from bisphenol A (BPA), a substance that was initially synthesized as a chemical estrogen...
January 18, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28094573/advanced-gastric-adenocarcinoma-optimizing-therapy-options
#2
Dilsa Mizrak Kaya, Kazuto Harada, Yusuke Shimodaira, Fatemeh G Amlashi, Quan Lin, Jaffer A Ajani
Gastric adenocarcinoma (GAC) is the fifth most common cancer and third leading cause of cancer related mortality worldwide. When localized, cure is achievable with surgery and adjunctive therapies in some patients, however, once advanced, GAC is not a curable condition. Only two targeted agents (trastuzumab and ramucirumab) have been approved and apatinib was approved only in China. Because of the heterogeneous nature of GAC, it is not possible to assess a standard therapeutic approach. Areas Covered: In this review, we aimed to describe the optimal systemic therapy regimens for advanced GAC...
January 17, 2017: Expert Review of Clinical Pharmacology
https://www.readbyqxmd.com/read/28093705/manipulation-of-oxygen-and-endoplasmic-reticulum-stress-factors-as-possible-interventions-for-treatment-of-multiple-sclerosis-evidence-for-and-against
#3
Paul Eggleton, Gary R Smerdon, Janet E Holley, Nicholas J Gutowski
Multiple sclerosis (MS) is normally considered a chronic inflammatory disease of the central nervous system (CNS), where T-cells breaching the blood brain barrier react against proteins of the axonal myelin sheaths, leading to focal plaques and demyelination in the brain and spinal cord. Many current therapies are immunosuppressive in nature and are designed to target the immune system at an early stage of the disease. But there is no cure and MS may evolve into a neurodegenerative disease, where immunomodulatory treatments appear less effective...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28087440/an-overlooked-horticultural-crop-smyrnium-olusatrum-as-a-potential-source-of-compounds-effective-against-african-trypanosomiasis
#4
Riccardo Petrelli, Farahnaz Ranjbarian, Stefano Dall'Acqua, Fabrizio Papa, Romilde Iannarelli, Stephane L Ngahang Kamte, Sauro Vittori, Giovanni Benelli, Filippo Maggi, Anders Hofer, Loredana Cappellacci
Among natural products, sesquiterpenes have shown promising inhibitory effects against bloodstream forms of Trypanosoma brucei, the protozoan parasite causing human African trypanosomiasis (HAT). Smyrnium olusatrum (Apiaceae), also known as Alexanders or wild celery, is a neglected horticultural crop characterized by oxygenated sesquiterpenes containing a furan ring. In the present work we explored the potential of its essential oils obtained from different organs and the main oxygenated sesquiterpenes, namely isofuranodiene, germacrone and β-acetoxyfuranoeudesm-4(15)-ene, as inhibitors of Trypanosoma brucei...
January 10, 2017: Parasitology International
https://www.readbyqxmd.com/read/28070730/cadd-medicine-design-is-the-potion-that-can-cure-my-disease
#5
Eric S Manas, Darren V S Green
The acronym "CADD" is often used interchangeably to refer to "Computer Aided Drug Discovery" and "Computer Aided Drug Design". While the former definition implies the use of a computer to impact one or more aspects of discovering a drug, in this paper we contend that computational chemists are most effective when they enable teams to apply true design principles as they strive to create medicines to treat human disease. We argue that teams must bring to bear multiple sub-disciplines of computational chemistry in an integrated manner in order to utilize these principles to address the multi-objective nature of the drug discovery problem...
January 9, 2017: Journal of Computer-aided Molecular Design
https://www.readbyqxmd.com/read/28068146/a-natural-language-based-presentation-of-cognitive-stimulation-to-people-with-dementia-in-assistive-technology-a-pilot-study
#6
Nina Dethlefs, Maarten Milders, Heriberto Cuayáhuitl, Turkey Al-Salkini, Lorraine Douglas
Currently, an estimated 36 million people worldwide are affected by Alzheimer's disease or related dementias. In the absence of a cure, non-pharmacological interventions, such as cognitive stimulation, which slow down the rate of deterioration can benefit people with dementia and their caregivers. Such interventions have shown to improve well-being and slow down the rate of cognitive decline. It has further been shown that cognitive stimulation in interaction with a computer is as effective as with a human...
January 9, 2017: Informatics for Health & Social Care
https://www.readbyqxmd.com/read/28063957/initial-development-and-validation-of-a-patient-reported-symptom-survey-for-small-fiber-polyneuropathy
#7
Roi Treister, Mette Lodahl, Magdalena Lang, Shelley S Tworoger, Shlomo Sawilowsky, Anne Louise Oaklander
: Small-fiber polyneuropathy SFPN affects unmyelinated and thinly myelinated peripheral axons. Several questionnaires have been developed to assess polyneuropathy from diabeties or chemotherapy, but none for SFPN from other or unknown causes. A comprehensive survey could help clinicians diagnose and assess treatment responses, define prevalence natural history and cures, and identify research subjects. Thus, we developed the one-page Small-fiber Symptom Survey (SSS), using input from patients and 21 medical/scientific experts...
January 4, 2017: Journal of Pain: Official Journal of the American Pain Society
https://www.readbyqxmd.com/read/28060012/post-treatment-control-or-treated-controllers-viral-remission-in-treated-and-untreated-primary-hiv-infection
#8
Genevieve E Martin, Morgane Gossez, James P Williams, Wolfgang Stöhr, Jodi Meyerowitz, Ellen M Leitman, Philip Goulder, Kholoud Porter, Sarah Fidler, John Frater
OBJECTIVE(S): An HIV cure will impose aviraemia which is sustained following the withdrawal of antiretroviral therapy (ART). Understanding the efficacy of novel interventions aimed at curing HIV requires characterisation of both natural viral control and the effect of ART on viral control after treatment interruption. DESIGN: Analysis of transient viral control in recent seroconverters in the SPARTAC trial. METHODS: We compared untreated and treated HIV seroconverters (n = 292) and identified periods of control (plasma VL<400 copies/mL for ≥16 weeks off therapy) in 7...
January 4, 2017: AIDS
https://www.readbyqxmd.com/read/28056757/phytochemical-therapies-in-vascular-functioning-a-molecular-approach
#9
Hasan Gencoglu, Cemal Orhan, Kazim Sahin
There has been an increasing interest in the usage of natural products for the prevention and treatment of chronic diseases such as cardiovascular disease (CVD). Regular consumption of fruits, vegetables and whole grains has been shown to be negatively correlated with the risk of CVDs. These foods provide a diversity of nutrients and different bioactive compounds including phytochemicals, vitamins, minerals and fibers which play critical roles in the sustainability of optimal cardiovascular health. Plant-based foods or a nutritional cure are gradually being integrated into medical practice for CVD management partly due to the supporting experimental studies, clinical trials and epidemiological studies...
January 5, 2017: Current Vascular Pharmacology
https://www.readbyqxmd.com/read/28056752/inhibiting-the-secretion-of-hepatitis-b-surface-antigen-hbsag-to-treat-hepatitis-b-infection-a-review
#10
Simon D Baugh
Chronic Hepatitis B is a major global health issue, and has no known cure. Currently there are over 240 million people infected with the disease, and it leads to the death of over 686,000 people each year. A total of seven treatments which help to control the disease are currently available: interferon-based treatments (pegasys, and interferon alpha), and nucleoside and nucleotide analogs (Viread, Baraclude, Tyzeka, Hepsera, Epivir-HBV), but all require continuing treatment to maintain control of the disease...
January 4, 2017: Infectious Disorders Drug Targets
https://www.readbyqxmd.com/read/28046183/pork-loin-quality-is-not-indicative-of-fresh-belly-or-fresh-and-cured-ham-quality
#11
E K Arkfeld, K B Wilson, M F Overholt, B N Harsh, J E Lowell, E K Hogan, B J Klehm, B M Bohrer, D A Mohrhauser, D A King, T L Wheeler, A C Dilger, S D Shackelford, D D Boler
The objective was to characterize the relationship between fresh loin quality with fresh belly or fresh and cured ham quality. Pigs raised in 8 barns representing 2 seasons [cold ( = 4,290) and hot ( = 3,394)] and 2 production focuses [lean ( = 3,627) and quality ( = 4,057)] were used. Carcass characteristics and other meat quality data were collected on 7,684 carcasses. All of the carcasses were evaluated for HCW, LM depth, tenth rib fat depth, leg (ham primal) weight, instrumental color on the gluteus medius and gluteus profundus of the ham face, and subjective loin quality...
December 2016: Journal of Animal Science
https://www.readbyqxmd.com/read/28045249/rationally-designed-peptides-and-peptidomimetics-as-inhibitors-of-amyloid-%C3%AE-a%C3%AE-aggregation-potential-therapeutics-of-alzheimer-s-disease
#12
Deepti Goyal, Suniba Shuaib, Sukhmani Mann, Bhupesh Goyal
Alzheimer's disease (AD) is a progressive neurodegenerative disease with no clinically accepted treatment to cure or halt its progression. The worldwide effort to develop peptide-based inhibitors of amyloid-β (Aβ) aggregation can be considered an unplanned combinatorial experiment. An understanding of what has been done and achieved may advance our understanding of AD pathology and the discovery of effective therapeutic agents. We review here the history of such peptide-based inhibitors, including those based on the Aβ sequence and those not derived from that sequence, containing both natural and unnatural amino acid building blocks...
January 18, 2017: ACS Combinatorial Science
https://www.readbyqxmd.com/read/28045228/syringaresinol-a-renewable-and-safer-alternative-to-bisphenol-a-for-epoxy-amine-resins
#13
Marine Janvier, Louis Hollande, Abdus Samad Jaufurally, Miguel Pernes, Raphaël Ménard, Marina Grimaldi, Johnny Beaugrand, Patirck Balaguer, Paul-Henri Ducrot, Florent Allais
A renewable bis-epoxy, SYR-EPO, has been prepared from syringaresinol, a naturally occurring bisphenol deriving from sinapic acid, using a chemo-enzymatic synthetic pathway. Estrogenic activity test revealed no endocrine disruption for syringaresinol. Its glycidylation afforded bis-epoxy SYR-EPO with excellent yield and purity. This biobased safer epoxy precursor was then cured with conventional and renewable diamines for the preparation of epoxy-amine resins. The resulting thermosets were thermally and mechanically characterized (TGA, DSC and DMA)...
January 3, 2017: ChemSusChem
https://www.readbyqxmd.com/read/28039497/synergistic-effects-of-fenbendazole-and-metronidazole-against-giardia-muris-in-swiss-mice-naturally-infected
#14
Renata Coltro Bezagio, Cristiane Maria Colli, Liara Izabela Lopes Romera, Érika Cristina Ferreira, Ana Lúcia Falavigna-Guilherme, Mônica Lúcia Gomes
In this study were proposed different protocols for the treatment of mice naturally infected with Giardia muris. Male Swiss mice were divided into seven groups, with five animals each, in a blind, controlled, randomized by drawing lots and once-repeated experiment. Parasite detection and cure control were performed using the Faust method and search by trophozoites in the intestinal mucosa. Clinical parameters (weight, water and feed consumption, elimination of excreta, aspect of the fur and feces) were also evaluated...
December 30, 2016: Parasitology Research
https://www.readbyqxmd.com/read/28027959/polysarcosine-brush-stabilized-gold-nanorods-for-in-vivo-near-infrared-photothermal-tumor-therapy
#15
Hong Zhu, Ying Chen, Fang-Jie Yan, Jin Chen, Xin-Feng Tao, Jun Ling, Bo Yang, Qiao-Jun He, Zheng-Wei Mao
: Gold nanorods (AuNRs) are suitable candidates for photothermal therapy in vivo, because of their excellent ability to transfer near-infrared (NIR) light into heat. However, appropriate surface should be generated on AuNRs before their in vivo application because of the low colloidal stability in complicate biological environment and relatively strong toxicity compared to their pristine stabilizer cetyltrimethylammonium bromide. In the current study, polysarcosine (PS), a non-ionic hydrophilic polypeptoid whose structure is similar to polypeptides, bearing repeating units of natural α-amino acid, was used to stabilize AuNRs due to its excellent hydrophilicity and biocompatibility...
December 24, 2016: Acta Biomaterialia
https://www.readbyqxmd.com/read/28027702/making-a-global-sensation-vanilla-flavor-synthetic-chemistry-and-the-meanings-of-purity
#16
Nadia Berenstein
How did vanilla, once a rare luxury, become a global sensation? Rather than taking the vanilla flavor of vanilla beans as a pre-existing natural fact, this essay argues that the sensory experience that came to be recognized as vanilla was a hybrid artifact produced by an expanding global trade in a diverse set of pleasurable substances, including cured beans from artificially pollinated vanilla orchids, synthetic vanillin, sugar, and a far-flung miscellany of other botanical and chemical materials. Global trade and large-scale production resulted not in the production of a homogenous, stable commodity, but in a range of local vanillas, heterogeneous mixtures with a range of qualities and virtues...
December 2016: History of Science; An Annual Review of Literature, Research and Teaching
https://www.readbyqxmd.com/read/28025936/current-status-of-leukemia-cytotherapy-exploitation-with-immune-cells
#17
Haiyan Bao, Depei Wu
With the development of chemotherapy and hematopoietic stem cell transplantation (HSCT), the prognosis of leukemia patients has been improved greatly in the past few decades. However, relapsed and refractory leukemia is still the major cause of mortality in leukemia patients. Besides, advancing age, poor performance status and severe co-morbidities limit the applicability of cytotoxic chemotherapy in certain groups of leukemia patients. Novel agents including nucleoside analogues, kinase inhibitors targeting oncoproteins and monoclonal antibodies are under investigation for the management of leukemia...
December 26, 2016: Current Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28019642/recent-updates-on-melanocyte-biology-and-the-use-of-promising-bioactive-compounds-for-the-treatment-of-hypopigmentary-disorders-a-review
#18
Sharique A Ali, Ishrat Naaz, Kamal Uddin Zaidi, Ayesha Sharique Ali
Skin pigmentation is a broadly appearing phenomenon in nature which plays an important task of determining the appearance and biology of all vertebrates including human beings. Skin color is a crucial attribute, determined by the synthesis of melanin pigment within melanocytes by the process of melanogenesis and is regulated by many extrinsic as well as intrinsic factors. Tyrosinase catalyzes the key step of melanogenesis, dysfunction of tyrosinase leads to reduce melanin production which results in severe clinical and aesthetical problems of hypopigmentation...
December 23, 2016: Mini Reviews in Medicinal Chemistry
https://www.readbyqxmd.com/read/28017151/synopsis-on-managing-strategies-for-neurodegenerative-disorders-challenges-from-bench-to-bedside-in-successful-drug-discovery-and-development
#19
Sheraz Ahmad Bhat, Mohammad Amjad Kamal, Ghulam Md Ashraf
The maintenance of health requires successful cell functioning which in turn depends upon the proper and active conformation of proteins besides other biomolecules. However, occasionally these proteins may misfold and lead to the appearance and progression of protein conformational diseases. These diseases apart from others include several neurodegenerative disorders (NDDs) such as Alzheimer's disease, Parkinson's disease, Huntington disease, multiple sclerosis, amyotrophic lateral sclerosis, and other less well known diseases...
December 22, 2016: Current Topics in Medicinal Chemistry
https://www.readbyqxmd.com/read/27997659/serologic-screening-for-genital-herpes-infection-us-preventive-services-task-force-recommendation-statement
#20
Kirsten Bibbins-Domingo, David C Grossman, Susan J Curry, Karina W Davidson, John W Epling, Francisco A R García, Alex R Kemper, Alex H Krist, Ann E Kurth, C Seth Landefeld, Carol M Mangione, William R Phillips, Maureen G Phipps, Michael P Pignone, Michael Silverstein, Chien-Wen Tseng
Importance: Genital herpes is a prevalent sexually transmitted infection in the United States, occurring in almost 1 in 6 persons aged 14 to 49 years. Infection is caused by 2 subtypes of the herpes simplex virus (HSV), HSV-1 and HSV-2. Antiviral medications may provide symptomatic relief from outbreaks but do not cure HSV infection. Neonatal herpes infection, while uncommon, can result in substantial morbidity and mortality. Objective: To update the 2005 US Preventive Services Task Force (USPSTF) recommendation on screening for genital herpes...
20, 2016: JAMA: the Journal of the American Medical Association
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