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https://www.readbyqxmd.com/read/28644563/gas-phase-dissociation-study-of-erythrinian-alkaloids-by-electrospray-ionization-mass-spectrometry-and-computational-methods
#1
T Guaratini, L G P Feitosa, D B Silva, N P Lopes, J L C Lopes, R Vessecchi
Alkaloids from plants of the genus Erythrina display important biological activities, including anxiolytic action. Characterization of these alkaloids by mass spectrometry (MS) has contributed to the construction of a spectral library, has improved understanding of their structures, and has supported the proposal of fragmentation mechanisms in light of density functional calculations (DFT). In this study, we have used low- and high-resolution MS(n) analyses to investigate the fragmentation patterns of erythrinian alkaloids; we have employed the B3LYP/6-31+G(d,p) model to obtain their reactive sites...
June 23, 2017: Journal of Mass Spectrometry: JMS
https://www.readbyqxmd.com/read/28643798/topical-administration-of-esculetin-as-a-potential-therapy-for-experimental-dry-eye-syndrome
#2
D Jiang, X Liu, J Hu
PurposeIn this study, we investigated the therapeutic effects of topical Esculetin for dry eye rabbits through the ocular tests, inflammatory factor levels and specific phosphorylated protein expressions of ERK1/2 singnal pathway.Patients and methodsThirty-two healthy adult male New Zealand white rabbits were chosen for the study. DES models were established after removing of the main lacrimal gland, Harderian gland and nictitating membrane in the left eyes and randomly divided into group DES control, group CsA, group Esculetin and group Esculetin combined with CsA (C&E), meanwhile the right eyes served as group Normal control...
June 23, 2017: Eye
https://www.readbyqxmd.com/read/28643086/gallic-and-ellagic-acids-two-natural-immunomodulator-compounds-solve-infection-of-macrophages-by-leishmania-major
#3
Michel Muálem de Moraes Alves, Lucas Moreira Brito, Adriana Cunha Souza, Bárbara Cristina Silva Holanda Queiroz, Thaynara Parente de Carvalho, Joilson Ferreira Batista, Jéssica Sara de Sousa Macêdo Oliveira, Ivete Lopes de Mendonça, Silvéria Regina de Sousa Lira, Mariana Helena Chaves, Juan Carlos Ramos Gonçalves, Sabrina Maria Portela Carneiro, Daniel Dias Rufino Arcanjo, Fernando Aécio de Amorim Carvalho
Leishmaniasis is a complex of parasitic protozoan diseases caused by more than 20 different species of parasites from Leishmania genus. Conventional treatments are high costly, and promote a sort of side effects. Besides, protozoan resistance to treatments has been reported. Natural products have been investigated as a source of new therapeutic alternatives, not only acting directly against the parasite but also being able to synergistically act on the host immune system in order to control parasitemia. Gallic acid (GA) and ellagic acid (EA) are plant-derived phenolic compounds which are able to induce antiinflammatory, gastroprotective, and anticarcinogenic activities...
June 22, 2017: Naunyn-Schmiedeberg's Archives of Pharmacology
https://www.readbyqxmd.com/read/28642801/differences-in-the-tongue-features-of-primary-dysmenorrhea-patients-and-controls-over-a-normal-menstrual-cycle
#4
Jihye Kim, Haebeom Lee, Hyunho Kim, Jong Yeol Kim, Keun Ho Kim
BACKGROUND: The aims of this study were to investigate the relationships between tongue features and the existence of menstrual pain and to provide basic information regarding the changes in tongue features during a menstrual cycle. METHODS: This study was conducted at the Kyung Hee University Medical Center. Forty-eight eligible participants aged 20 to 29 years were enrolled and assigned to two groups according to their visual analogue scale (VAS) scores. Group A included 24 females suffering from primary dysmenorrhea (PD) caused by qi stagnation and blood stasis syndrome with VAS ≥ 4...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/28642751/in-vitro-antimicrobial-activity-of-chlorquinaldol-against-microorganisms-responsible-for-skin-and-soft-tissue-infections-comparative-evaluation-with-gentamicin-and-fusidic-acid
#5
Monica Bortolin, Alessandro Bidossi, Elena De Vecchi, Maura Avveniente, Lorenzo Drago
Skin and soft tissue infections (SSTIs) are a major therapeutic challenge for clinicians. The emergence of pathogens with decreased susceptibility to available therapies has become an emerging problem often associated with treatment failure. Hence, there is an urgent need for novel broad-spectrum antimicrobial agents. The purpose of this study was to assess the feasibility of chlorquinaldol as an alternative approach to currently used topical antibiotics for the treatment of skin and soft tissue infections...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28642702/amorpha-fruticosa-a-noxious-invasive-alien-plant-in-europe-or-a-medicinal-plant-against-metabolic-disease
#6
REVIEW
Ekaterina Kozuharova, Adam Matkowski, Dorota Woźniak, Rumiana Simeonova, Zheko Naychov, Clemens Malainer, Andrei Mocan, Seyed M Nabavi, Atanas G Atanasov
Amorpha fruticosa L. (Fabaceae) is a shrub native to North America which has been cultivated mainly for its ornamental features, honey plant value and protective properties against soil erosion. It is registered amongst the most noxious invasive species in Europe. However, a growing body of scientific literature also points to the therapeutic potential of its chemical constituents. Due to the fact that A. fruticosa is an aggressive invasive species, it can provide an abundant and cheap resource of plant chemical constituents which can be utilized for therapeutic purposes...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28642126/molecular-and-hydrodynamic-properties-of-human-epidermal-growth-factor-receptor-her2-extracellular-domain-and-its-homodimer-experiments-and-multi-scale-simulations
#7
J F Vega, J Ramos, V Cruz, E Vicente-Alique, E Sánchez-Sánchez, A Sánchez-Fernández, Y Wang, P Hu, J Cortés, J Martínez-Salazar
BACKGROUND: In a broad range of human carcinomas gene amplification leads to HER2 overexpression, which has been proposed to cause spontaneous dimerization and activation in the absence of ligand. This makes HER2 attractive as a therapeutic target. However, the HER2 homodimerization mechanism remains unexplored. It has been suggested that the "back-to-back" homodimer does not form in solution. Notwithstanding, very recently the crystal structure of the HER2 extracellular domain homodimer formed with a "back-to-head" interaction has been resolved...
June 19, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28641995/acetylator-status-impacts-amifampridine-phosphate-firdapse%C3%A2-pharmacokinetics-and-exposure-to-a-greater-extent-than-renal-function
#8
Peter E Haroldsen, Zlatko Sisic, Joe Datt, Donald G Musson, Gary Ingenito
PURPOSE: The purpose of this study is to evaluate safety, tolerability, and pharmacokinetic (PK) properties of amifampridine phosphate (Firdapse™) and its major inactive 3-N-acetyl metabolite in renally impaired and healthy individuals with slow acetylator (SA) and rapid acetylator (RA) phenotypes. METHODS: This was a Phase I, multicenter, open-label study of the PK properties and safety profile of amifampridine phosphate in individuals with normal, mild, moderate, or severely impaired renal function...
June 19, 2017: Clinical Therapeutics
https://www.readbyqxmd.com/read/28641712/wireless-the-life-and-death-of-guglielmo-marconi
#9
EDITORIAL
Harold Smulyan, Robert S Pinals, Lisa Pinals, Daniel Villarreal
With little training in physics, Guglielmo Marconi developed the invention that stunned the world by wirelessly connecting ships and continents. Ten years before his death, he sustained a myocardial infarction followed by unmistakable angina pectoris. His personality and unhappy family life limited his ability to cope with his disease and to deal with Italy's most respected physicians. But their descriptions of his diagnosis and management are surprisingly few. Poor record keeping, intentional news suppression of his failing health or limited medical opportunities could be the reason for this lack of information...
June 2017: American Journal of the Medical Sciences
https://www.readbyqxmd.com/read/28641519/neural-stem-cells-and-human-induced-pluripotent-stem-cells-to-model-rare-cns-diseases
#10
Lidia De Filippis, Cristina Zalfa, Daniela Ferrari
Despite the great effort spent over the last decades to unravel the pathological mechanisms underpinning the development of central nervous system disorders, most of them remain still unclear. In particular, the study of rare brain diseases is hurdled by the lack of post-mortem samples and of reliable epidemiological studies, thus the setting of in vitro modeling systems appears essential to dissect the puzzle of genetic and environmental alterations affecting neural cells viability and functionality The isolation and expansion in vitro of embryonic (ESC) and fetal neural stem cells (NSC) from human tissue has efficiently allowed to model several neurological diseases "in a dish" and has also provided a novel platform to test potential therapeutic strategies in a pre-clinical setting...
June 15, 2017: CNS & Neurological Disorders Drug Targets
https://www.readbyqxmd.com/read/28641518/grp78-influences-chemoresistance-and-prognosis-in-cancer
#11
Jenifer B Gifford, Reginald Hill
Resistance to therapy is a major hindrance to patient survival in cancer, underscoring a critical need to elucidate the underlying mechanisms responsible for chemoresistance. Research has demonstrated that endoplasmic reticulum (ER) stress plays a significant role in allowing cells to survive conditions that would normally elicit cell death. Specifically, elevated expression of GRP78, the master regulator of the unfolded protein response (UPR), has been shown to induce chemoresistance and serves as a indictor of poor prognosis in patients...
June 15, 2017: Current Drug Targets
https://www.readbyqxmd.com/read/28641511/microbial-lipase-mediated-by-health-beneficial-modification-of-cholesterol-and-flavors-in-food-products-a-review
#12
Ranjana Sharma, Nivedita Sharma
BACKGROUND: The tremendous need of lipase in varied applications in biotechnological increases its economical value in food and allied industries. Lipase has an impressive number of applications viz. enhancements of flavor in food products (Cheese, butter, alcoholic beverages, milk chocolate and diet control food stuffs), detergent industry in removing oil, grease stain, organic chemical processing, textile industry, oleochemical industry, cosmetic industry and also as therapeutic agents in pharmaceutical industries...
June 14, 2017: Recent Patents on Biotechnology
https://www.readbyqxmd.com/read/28641323/ischaemia-reperfusion-injury-and-hyperbaric-oxygen-pathways-a-review-of-cellular-mechanisms
#13
REVIEW
Ashish Francis, Richard Baynosa
Ischaemia-induced tissue injury has wide-ranging clinical implications including myocardial infarction, stroke, compartment syndrome, ischaemic renal failure and replantation and revascularization. However, the restoration of blood flow produces a 'second hit' phenomenon, the effect of which is greater than the initial ischaemic event and characterizes ischaemia-reperfusion (IR) injury. Some examples of potential settings of IR injury include: following thrombolytic therapy for stroke, invasive cardiovascular procedures, solid organ transplantation, and major trauma resuscitation...
June 2017: Diving and Hyperbaric Medicine: the Journal of the South Pacific Underwater Medicine Society
https://www.readbyqxmd.com/read/28639619/long-noncoding-rna-lnchifcar-mir31hg-is-a-hif-1%C3%AE-co-activator-driving-oral-cancer-progression
#14
Jing-Wen Shih, Wei-Fan Chiang, Alexander T H Wu, Ming-Heng Wu, Ling-Yu Wang, Yen-Ling Yu, Yu-Wen Hung, Wen-Chang Wang, Cheng-Ying Chu, Chiu-Lien Hung, Chun A Changou, Yun Yen, Hsing-Jien Kung
Long noncoding RNAs (lncRNAs) have been implicated in hypoxia/HIF-1-associated cancer progression through largely unknown mechanisms. Here we identify MIR31HG as a hypoxia-inducible lncRNA and therefore we name it LncHIFCAR (long noncoding HIF-1α co-activating RNA); we describe its oncogenic role as a HIF-1α co-activator that regulates the HIF-1 transcriptional network, crucial for cancer development. Extensive analyses of clinical data indicate LncHIFCAR level is substantially upregulated in oral carcinoma, significantly associated with poor clinical outcomes and representing an independent prognostic predictor...
June 22, 2017: Nature Communications
https://www.readbyqxmd.com/read/28639161/moral-distress-and-its-contribution-to-the-development-of-burnout-syndrome-among-critical-care-providers
#15
Renata Rego Lins Fumis, Gustavo Adolpho Junqueira Amarante, Andréia de Fátima Nascimento, José Mauro Vieira Junior
BACKGROUND: Burnout appears to be common among critical care providers. It is characterized by three components: emotional exhaustion, depersonalization and personal accomplishment. Moral distress is the inability of a moral agent to act according to his or her core values and perceived obligations due to internal and external constraints. We aimed to estimate the correlation between moral distress and burnout among all intensive care unit (ICU) and the step-down unit (SDU) providers (physicians, nurses, nurse technicians and respiratory therapists)...
December 2017: Annals of Intensive Care
https://www.readbyqxmd.com/read/28638866/kinetics-of-modulatory-role-of-cyperus-esculentus-l-on-the-specific-activity-of-key-carbohydrate-metabolizing-enzymes
#16
Saheed Sabiu, Emmanuel Oladipo Ajani, Taofik Olatunde Sunmonu, Anofi Omotayo Tom Ashafa
BACKGROUND: The continuous search for new lead compounds as viable inhibitors of specific enzymes linked to carbohydrate metabolism has intensified. Cyperus esculentus L. is one of the therapeutically implicated botanicals against several degenerative diseases including diabetes mellitus. MATERIALS AND METHODS: This study evaluated the antioxidant and mechanism(s) of inhibitory potential of aqueous extract of C. esculentus on α-amylase and α-glucosidase in vitro...
2017: African Journal of Traditional, Complementary, and Alternative Medicines: AJTCAM
https://www.readbyqxmd.com/read/28638679/decrease-of-serum-biomarker-of-type-ii-collagen-degradation-coll2-1-by-intra-articular-injection-of-an-autologous-plasma-rich-platelet-in-patients-with-unilateral-primary-knee-osteoarthritis
#17
Rasha Mohamed Fawzy, Nashwa Ismail Hashaad, Amira Ibrahim Mansour
OBJECTIVE: This study aimed to evaluate the effect of one dose of intra-articular injection of (PRP) in the knee joint on a specific osteoarthritis (OA) serum biomarker of cartilage degeneration, Collagen 2-1 (Coll2-1), over a short period of 3 months. The aim extended to clarify the effect of PRP on the functional status of the osteoarthritic knee joint. MATERIAL AND METHODS: Sixty patients with primary unilateral knee OA were enrolled in this study. They were subdivided according to Kellgren-Lawrence grading scale (KL) into (Group I): including patients with KL grade < 3 and (Group II): including patients with KL grade ≥3...
June 2017: European Journal of Rheumatology
https://www.readbyqxmd.com/read/28638673/monitoring-of-cellular-changes-in-the-bone-marrow-following-pth-1-34-treatment-of-ovx-rats-using-a-portable-stray-field-nmr-scanner
#18
Inbar Hillel, Itzhak Binderman, Yifat Sarda, Uri Nevo
Osteoporosis is characterized by reduction in trabecular bone in conjunction with increased marrow cell adiposity. While these changes occur within weeks, monitoring of treatment efficacy as performed by DEXA is sensitive only to long-term changes. MRI is sensitive to bone marrow changes but is less affordable. In a recent study, we have shown that a stray-field NMR can monitor bone marrow cellular changes that are related to osteoporosis. Objectives. To demonstrate sensitivity of a low-field tabletop NMR scanner to bone marrow dynamics following hormonal treatment in rats...
2017: Journal of Osteoporosis
https://www.readbyqxmd.com/read/28638586/clarithromycin-versus-gemifloxacin-in-quadruple-therapeutic-regimens-for-helicobacter-pylori-infection-eradication
#19
Fariborz Mansour-Ghanaei, Zahra Pedarpour, Afshin Shafaghi, Farahnaz Joukar
BACKGROUND Helicobacter pylori (H. pylori) infection is a major casual factor in any peptic diseases. Clarithromycin as one of the drugs recommended for the infection eradication regimen has shown different levels of resistance. The present study is comparing the effectiveness of clarithromycin- and gemifloxacin - based quadruple regimens in H. pylori eradication. METHODS This was a prospective double blind randomized clinical trial on patients with clear indication of H. pylori eradication. The patients were randomly divided into two groups: "BPAC group" treated with bismuth subcitrate (240 mg), pantoprazole (20 mg), amoxicillin (1 gr), and clarithromycin (500 mg), all twice daily, and the "BPAG group" treated with bismuth subcitrate, pantoprazole, and amoxicillin with same doses as "BPAC group" and gemifloxacin (320 mg daily) all for 10 days...
April 2017: Middle East Journal of Digestive Diseases
https://www.readbyqxmd.com/read/28638556/effects-of-different-powder-to-liquid-ratios-on-the-push-out-bond-strength-of-cem-cement-on-simulated-perforations-in-the-furcal-area
#20
Mohammad-Frough Reyhani, Negin Ghasemi, Vahid Zand, Saba Mosavizadeh
BACKGROUND: Proper bond strength to dentin is one of the properties of biomaterials used for therapeutic purposes such as repair of furcal perforations. The aim of the present study to evaluate the effects of different powder to liquid ratios of Calcium-enriched mixture (CEM) on the push-out bond strengths in simulated perforations in the furcal area and compare it with Mineral trioxide aggregate (MTA). MATERIAL AND METHODS: Furcal perforations, measuring 1.3 mm in diameter and 2 mm in height, were prepared in 120 mandibular first molars...
June 2017: Journal of Clinical and Experimental Dentistry
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