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https://www.readbyqxmd.com/read/28340510/the-diverse-family-of-mmpl-transporters-in-mycobacteria-from-regulation-to-antimicrobial-developments
#1
REVIEW
Albertus Viljoen, Violaine Dubois, Fabienne Girard-Misguich, Mickael Blaise, Jean-Louis Herrmann, Laurent Kremer
Mycobacterial genomes contain large sets of loci encoding membrane proteins that belong to a family of multidrug resistance pumps designated Resistance-Nodulation-Cell Division (RND) permeases. Mycobacterial membrane protein Large (MmpL) transporters represent a subclass of RND transporters known to participate in the export of lipid components across the cell envelope. These surface-exposed lipids with unusual structures play key roles in the physiology of mycobacteria and/or can act as virulence factors and immunomodulators...
March 24, 2017: Molecular Microbiology
https://www.readbyqxmd.com/read/28340464/a-review-on-various-electrochemical-techniques-for-heavy-metal-ions-detection-with-different-sensing-platforms
#2
REVIEW
BabanKumar Bansod, Tejinder Kumar, Ritula Thakur, Shakshi Rana, Inderbir Singh
Heavy metal ions are non-biodegradable and contaminate most of the natural resources occurring in the environment including water. Some of the heavy metals including Lead (Pb), Mercury (Hg), Arsenic (As), Chromium (Cr) and Cadmium (Cd) are considered to be highly toxic and hazardous to human health even at trace levels. This leads to the requirement of fast, accurate and reliable techniques for the detection of heavy metal ions. This review presents various electrochemical detection techniques for heavy metal ions those are user friendly, low cost, provides on-site and real time monitoring as compared to other spectroscopic and optical techniques...
March 18, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28339883/interventions-to-improve-immigrant-health-a-scoping-review
#3
Esperanza Diaz, Gaby Ortiz-Barreda, Yoav Ben-Shlomo, Michelle Holdsworth, Bukola Salami, Anu Rammohan, Roger Yat-Nork Chung, Sabu S Padmadas, Thomas Krafft
: Disparities in health between immigrants and their host populations have been described across countries and continents. Hence, interventions for improving health targeting general populations are not necessarily effective for immigrants. To conduct a systematic search of the literature evaluating health interventions for immigrants; to map the characteristics of identified studies including range of interventions, immigrant populations and their host countries, clinical areas targeted and reported evaluations, challenges and limitations of the interventions identified...
February 27, 2017: European Journal of Public Health
https://www.readbyqxmd.com/read/28339747/deep-learning-for-pharmacovigilance-recurrent-neural-network-architectures-for-labeling-adverse-drug-reactions-in-twitter-posts
#4
Anne Cocos, Alexander G Fiks, Aaron J Masino
Objective: Social media is an important pharmacovigilance data source for adverse drug reaction (ADR) identification. Human review of social media data is infeasible due to data quantity, thus natural language processing techniques are necessary. Social media includes informal vocabulary and irregular grammar, which challenge natural language processing methods. Our objective is to develop a scalable, deep-learning approach that exceeds state-of-the-art ADR detection performance in social media...
February 22, 2017: Journal of the American Medical Informatics Association: JAMIA
https://www.readbyqxmd.com/read/28339441/the-role-of-the-ligamentum-flavum-area-as-a-morphological-parameter-of-lumbar-central-spinal-stenosis
#5
Young Uk Kim, Jun Young Park, Doo Hwan Kim, Myung-Hwan Karm, Jae-Young Lee, Jee In Yoo, Sung Won Chon, Jeong Hun Suh
BACKGROUND: Hypertrophy of the ligamentum flavum (LF) has been considered as a major cause of lumbar central spinal stenosis (LCSS). Previous studies have found that ligamentum flavum thickness (LFT) is correlated with aging, disc degeneration, and lumbar spinal stenosis. However, hypertrophy is different from thickness. Thus, to evaluate hypertrophy of the whole LF, we devised a new morphological parameter, called the ligamentum flavum area (LFA). OBJECTIVES: We hypothesized that the LFA is a key morphologic parameter in the diagnosis of LCSS...
March 2017: Pain Physician
https://www.readbyqxmd.com/read/28339440/pulsed-radiofrequency-to-the-dorsal-root-ganglion-in-acute-herpes-zoster-and-postherpetic-neuralgia
#6
Koohyun Kim, Daehyun Jo, EungDon Kim
BACKGROUND: Latent varicella zoster virus reactivates mainly in sensory ganglia such as the dorsal root ganglion (DRG) or trigeminal ganglion. The DRG contains many receptor channels and is an important region for pain signal transduction. Sustained abnormal electrical activity to the spinal cord via the DRG in acute herpes zoster can result in neuropathic conditions such as postherpetic neuralgia (PHN). Although the efficacy of pulsed radiofrequency (PRF) application to the DRG in various pain conditions has been previously reported, the application of PRF to the DRG in patients with herpes zoster has not yet been studied...
March 2017: Pain Physician
https://www.readbyqxmd.com/read/28335517/state-of-the-art-on-functional-virgin-olive-oils-enriched-with-bioactive-compounds-and-their-properties
#7
REVIEW
Patricia Reboredo-Rodríguez, María Figueiredo-González, Carmen González-Barreiro, Jesús Simal-Gándara, María Desamparados Salvador, Beatriz Cancho-Grande, Giuseppe Fregapane
Virgin olive oil, the main fat of the Mediterranean diet, is per se considered as a functional food-as stated by the European Food Safety Authority (EFSA)-due to its content in healthy compounds. The daily intake of endogenous bioactive phenolics from virgin olive oil is variable due to the influence of multiple agronomic and technological factors. Thus, a good strategy to ensure an optimal intake of polyphenols through habitual diet would be to produce enriched virgin olive oil with well-known bioactive polyphenols...
March 20, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28335420/efforts-and-challenges-in-engineering-the-genetic-code
#8
REVIEW
Xiao Lin, Allen Chi Shing Yu, Ting Fung Chan
This year marks the 48th anniversary of Francis Crick's seminal work on the origin of the genetic code, in which he first proposed the "frozen accident" hypothesis to describe evolutionary selection against changes to the genetic code that cause devastating global proteome modification. However, numerous efforts have demonstrated the viability of both natural and artificial genetic code variations. Recent advances in genetic engineering allow the creation of synthetic organisms that incorporate noncanonical, or even unnatural, amino acids into the proteome...
March 14, 2017: Life
https://www.readbyqxmd.com/read/28335397/emerging-anti-mitotic-activities-and-other-bioactivities-of-sesquiterpene-compounds-upon-human-cells
#9
REVIEW
Alessandra Bosco, Roy M Golsteyn
We review the bio-activities of natural product sesquiterpenes and present the first description of their effects upon mitosis. This type of biological effect upon cells is unexpected because sesquiterpenes are believed to inactivate proteins through Michael-type additions that cause non-specific cytotoxicity. Yet, certain types of sesquiterpenes can arrest cells in mitosis as measured by cell biology, biochemical and imaging techniques. We have listed the sesquiterpenes that arrest cells in mitosis and analyzed the biological data that support those observations...
March 13, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28335380/vitamin-e-nicotinate
#10
REVIEW
Kimbell R Duncan, Yuichiro J Suzuki
Vitamin E refers to a family of compounds that function as lipid-soluble antioxidants capable of preventing lipid peroxidation. Naturally occurring forms of vitamin E include tocopherols and tocotrienols. Vitamin E in dietary supplements and fortified foods is often an esterified form of α-tocopherol, the most common esters being acetate and succinate. The vitamin E esters are hydrolyzed and converted into free α-tocopherol prior to absorption in the intestinal tract. Because its functions are relevant to many chronic diseases, vitamin E has been extensively studied in respect to a variety of diseases as well as cosmetic applications...
March 13, 2017: Antioxidants (Basel, Switzerland)
https://www.readbyqxmd.com/read/28334951/community-participation-in-research-from-resource-constrained-countries-a-scoping-review
#11
Michelle Brear, Karin Hammarberg, Jane Fisher
Participatory health research (PHR) involves equitable community participation in all aspects of the research process. It is a potentially beneficial approach to research in resource-constrained countries. Measuring participation in specific activities and aspects is necessary for understanding the community and research-related benefits of PHR. The aims of this scoping review were to: develop a measure of lay-community participation in aspects and activities of PHR in resource-constrained countries; and use the measure to assess the nature and extent of reported participation...
March 18, 2017: Health Promotion International
https://www.readbyqxmd.com/read/28334697/constraint-based-stoichiometric-modelling-from-single-organisms-to-microbial-communities
#12
REVIEW
Willi Gottstein, Brett G Olivier, Frank J Bruggeman, Bas Teusink
Microbial communities are ubiquitously found in Nature and have direct implications for the environment, human health and biotechnology. The species composition and overall function of microbial communities are largely shaped by metabolic interactions such as competition for resources and cross-feeding. Although considerable scientific progress has been made towards mapping and modelling species-level metabolism, elucidating the metabolic exchanges between microorganisms and steering the community dynamics remain an enormous scientific challenge...
November 2016: Journal of the Royal Society, Interface
https://www.readbyqxmd.com/read/28333990/creativity-associated-with-the-application-of-a-motivational-intervention-programme-for-the-teaching-of-dance-at-school-and-its-effect-on-the-both-genders
#13
Diana Amado, Pedro Antonio Sánchez-Miguel, Pablo Molero
The current study reviews processes of teaching-learning based on creativity, with the application by teachers of several strategies to support the need for autonomy, competence, and relatedness. The aim is to learn the effect of pupil's gender on their motivational level and the psychological consequences that might arise in the cognitive, affective, and behavioural domains. A quasi-experimental study was carried out at four schools in Mexico, with 12 physical education teachers and 40 natural groups of pupils aged between 11 and 17 (M = 13...
2017: PloS One
https://www.readbyqxmd.com/read/28333977/transition-into-inflammatory-cancer-associated-adipocytes-in-breast-cancer-microenvironment-requires-microrna-regulatory-mechanism
#14
Jiwoo Lee, Bok Sil Hong, Han Suk Ryu, Han-Byoel Lee, Minju Lee, In Ae Park, Jisun Kim, Wonshik Han, Dong-Young Noh, Hyeong-Gon Moon
The role of adipocytes in cancer microenvironment has gained focus during the recent years. However, the characteristics of the cancer-associated adipocytes (CAA) in human breast cancer tissues and the underlying regulatory mechanism are not clearly understood. We reviewed pathology specimens of breast cancer patients to understand the morphologic characteristics of CAA, and profiled the mRNA and miRNA expression of CAA by using indirect co-culture system in vitro. The CAAs in human breast cancers showed heterogeneous topographic relationship with breast cancer cells within the breast microenvironment...
2017: PloS One
https://www.readbyqxmd.com/read/28333693/pediatric-intestinal-failure-associated-liver-disease
#15
Cathleen M Courtney, Brad W Warner
PURPOSE OF REVIEW: The goal of this review is to provide updates on the definition, pathophysiology, treatment, and prevention of intestinal failure-associated liver disease (IFALD) that are relevant to care of pediatric patients. RECENT FINDINGS: Current literature emphasizes the multifactorial nature of IFALD. The pathogenesis is still largely unknown; however, molecular pathways have been identified. Key to these pathways are proinflammatory cytokines involved in hepatic inflammation and bile acids synthesis such as Toll-like receptor 4 and farnesoid X receptor, respectively...
March 22, 2017: Current Opinion in Pediatrics
https://www.readbyqxmd.com/read/28333568/the-nature-of-competition-in-dietetics-education-a-narrative-review
#16
Jillian Ruhl, Daphne Lordly
The impact on student development associated with being part of a competitive program is an emerging finding in dietetics research. As such, a narrative review of relevant literature was conducted pertaining to competition in post-secondary programs and the educational experience of students with respect to developing a career in dietetics. The review was guided by 2 questions: How is competition experienced by students? What strategies can reduce competition among dietetics students within the educational experience? A refined literature screening process justified including 32 articles in the review...
March 23, 2017: Canadian Journal of Dietetic Practice and Research
https://www.readbyqxmd.com/read/28333429/multimodality-imaging-to-plan-and-guide-transcatheter-tricuspid-valve-interventions
#17
Edgard A Prihadi, Victoria Delgado, Jeroen J Bax
Tricuspid regurgitation (TR) is a highly prevalent valvular heart disease. The natural history of untreated significant TR portends an unfavourable outcome, but only a minority of patients is currently referred for surgical treatment. Organic TR (caused by primary abnormality of the leaflets) is relatively infrequent whereas secondary or functional TR (caused by dilatation of the tricuspid annulus, right ventricle [RV] and right atrium) is the predominant mechanism. The success of transcatheter therapies for left valvular heart disease over the last decade, has fuelled similar development of novel transcatheter devices for the treatment of TR...
March 23, 2017: Minerva Cardioangiologica
https://www.readbyqxmd.com/read/28333383/calcium-transport-and-signaling-in-mitochondria
#18
Roberto Bravo-Sagua, Valentina Parra, Camila López-Crisosto, Paula Díaz, Andrew F G Quest, Sergio Lavandero
Calcium (Ca2+) is a key player in the regulation of many cell functions. Just like Ca2+, mitochondria are ubiquitous, versatile, and dynamic players in determining both cell survival and death decisions. Given their ubiquitous nature, the regulation of both is deeply intertwined, whereby Ca2+ regulates mitochondrial functions, while mitochondria shape Ca2+ dynamics. Deregulation of either Ca2+ or mitochondrial signaling leads to abnormal function, cell damage or even cell death, thereby contributing to muscle dysfunction or cardiac pathologies...
March 16, 2017: Comprehensive Physiology
https://www.readbyqxmd.com/read/28333265/improving-oocyte-quality-by-transfer-of-autologous-mitochondria-from-fully-grown-oocytes
#19
Stine Gry Kristensen, Susanne Elisabeth Pors, Claus Yding Andersen
Older women are often the most challenging group of patients in fertility clinics due to a decline in both number and overall quality of oocytes. The quality of oocytes has been linked to mitochondrial dysfunction. In this mini-review, we discuss this hypothesis and suggest alternative treatment options using autologous mitochondria to potentially augment pregnancy potential in ART. Autologous transfer of mitochondria from the patient's own germline cells has attracted much attention as a possible new treatment to revitalize deficient oocytes...
March 2, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28333228/efficacy-of-ovarian-tissue-cryopreservation-for-fertility-preservation-lessons-learned-from-545-cases
#20
P Jadoul, A Guilmain, J Squifflet, M Luyckx, R Votino, C Wyns, M M Dolmans
STUDY QUESTION: How effective is ovarian tissue cryopreservation (OTC)? SUMMARY ANSWER: In our cohort of patients who underwent OTC, premature ovarian failure (POF) rates, return rates and pregnancy rates after autotransplantation were 31.5, 4.4 and 33%, respectively. WHAT IS KNOWN ALREADY: OTC for fertility purposes has been performed for >20 years now. With over 86 live births reported worldwide and success rates of ~30% after autotransplantation of frozen-thawed ovarian cortex, the procedure should no longer be considered experimental...
March 1, 2017: Human Reproduction
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