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https://www.readbyqxmd.com/read/29054041/cardiovascular-obstetric-and-neonatal-outcomes-in-women-with-previous-fontan-repair
#1
REVIEW
S J Bonner, O Asghar, A Roberts, S Vause, B Clarke, B Keavney
OBJECTIVES: To determine cardiovascular, obstetric and neonatal outcomes of pregnancies in women who have a Fontan circulation. METHODS: A retrospective case note review of all women with a Fontan circulation who attended the joint obstetric cardiac antenatal clinic at St Mary's Hospital, Manchester (UK) between 2004 and 2016 was performed. RESULTS: In total, there were 19 pregnancies in 9 women with a history of Fontan repair. 23 women with univentricular physiology attended in this time period...
October 16, 2017: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/29053875/current-state-of-the-surgical-treatment-of-terminal-neuromas
#2
Graham C Ives, Theodore A Kung, Bao Tram Nghiem, Daniel C Ursu, David L Brown, Paul S Cederna, Stephen W P Kemp
Painful terminal neuromas resulting from nerve injury following amputation are common. However, there is currently no universally accepted gold standard of treatment for this condition. A comprehensive literature review is presented on the treatment of terminal neuromas. Four categories of terminal neuroma surgical procedures are assessed: epineurial closure; nerve transposition with implantation; neurorrhaphy, and alternate target reinnervation. Significant patient and case studies are highlighted in each section, focusing on surgical technique and patient outcome metrics...
October 19, 2017: Neurosurgery
https://www.readbyqxmd.com/read/29053790/the-hippo-signaling-pathway-in-pancreatic-%C3%AE-cells-functions-and-regulations
#3
Amin Ardestani, Kathrin Maedler
Hippo signaling is an evolutionarily conserved pathway that critically regulates development and homeostasis of various tissues in response to a wide range of extracellular and intracellular signals. As an emerging significant player in many diseases, the Hippo pathway is also involved in the pathophysiology of diabetes on the level of the pancreatic islets. Multiple lines of evidence uncover the importance of Hippo signaling in pancreas development as well as in the regulation of β-cell survival, proliferation and regeneration...
October 18, 2017: Endocrine Reviews
https://www.readbyqxmd.com/read/29053785/progranulin-a-new-avenue-towards-the-understanding-and-treatment-of-neurodegenerative-disease
#4
Babykumari P Chitramuthu, Hugh P J Bennett, Andrew Bateman
Progranulin, a secreted glycoprotein, is encoded in humans by the single GRN gene. Progranulin consists of seven and a half, tandemly repeated, non-identical copies of the 12 cysteine granulin motif. Many cellular processes and diseases are associated with this unique pleiotropic factor that include, but are not limited to, embryogenesis, tumorigenesis, inflammation, wound repair, neurodegeneration and lysosome function. Haploinsufficiency caused by autosomal dominant mutations within the GRN gene leads to frontotemporal lobar degeneration, a progressive neuronal atrophy that presents in patients as frontotemporal dementia...
August 18, 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/29053585/companion-plants-for-aphid-pest-management
#5
REVIEW
Refka Ben-Issa, Laurent Gomez, Hélène Gautier
A potential strategy for controlling pests is through the use of "companion plants" within a crop system. This strategy has been used in several trials to fight against a major crop insect pest: the aphid. We reviewed the literature to highlight the major mechanisms by which a companion plant may act. Trials carried out under laboratory or field conditions revealed that companion plants operate through several mechanisms. A companion plant may be associated with a target crop for various reasons. Firstly, it can attract aphids and draw them away from their host plants...
October 20, 2017: Insects
https://www.readbyqxmd.com/read/29052591/targeting-thermogenesis-in-brown-fat-and-muscle-to-treat-obesity-and-metabolic-disease
#6
REVIEW
Matthias J Betz, Sven Enerbäck
Brown fat is emerging as an interesting and promising target for therapeutic intervention in obesity and metabolic disease. Activation of brown fat in humans is associated with marked improvement in metabolic parameters such as levels of free fatty acids and insulin sensitivity. Skeletal muscle is another important organ for thermogenesis, with the capacity to induce energy-consuming futile cycles. In this Review, we focus on how these two major thermogenic organs - brown fat and muscle - act and cooperate to maintain normal body temperature...
October 23, 2017: Nature Reviews. Endocrinology
https://www.readbyqxmd.com/read/29052327/crispr-is-knocking-on-barn-door
#7
REVIEW
I Lamas-Toranzo, J Guerrero-Sánchez, H Miralles-Bover, G Alegre-Cid, E Pericuesta, P Bermejo-Álvarez
Genome modification at specific loci in livestock species was only achievable by performing homologous recombination in somatic cells followed by somatic cell nuclear transfer. The difficulty and inefficiency of this method have slowed down the multiple applications of genome modification in farm animals. The discovery of site-specific endonucleases has provided a different and more direct route for targeted mutagenesis, as these enzymes allow the ablation (KO) or insertion (KI) of specific genomic sequences on a single step, directly applied to zygotes...
October 2017: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/29052319/from-pre-ovulatory-follicle-palpation-to-the-challenge-of-twin-pregnancies-clinical-reflections-following-one-million-gynaecological-examinations-in-dairy-cows
#8
REVIEW
F López-Gatius, R H F Hunter
Based on experimental studies and extensive field-scale experience, this review offers new proposals for: (i) elevating the success of modern insemination procedures, (ii) emphasizing features of a pre-ovulatory follicle in the context of optimum insemination timing, (iii) overcoming heat stress and its consequences using physiological processes or endocrine protocols, (iv) establishing a viable pregnancy or early pregnancy loss and (v) the challenge of twin pregnancies. In conclusion, the fertility of high-yielding dairy cows can be further improved...
October 2017: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/29052280/reappraisal-of-systemic-venous-chemoreceptors-might-they-explain-the-matching-of-breathing-to-metabolic-rate-in-humans
#9
M J Parkes
What is the topic of this review? One of the major unanswered questions in physiology is that of how breathing matches metabolic rate. Venous chemoreceptors seem to have been dismissed since the 1960s. What advances does it highlight? New evidence shows that their apparent dismissal needs reappraisal. The paper on which this depends has more than one interpretation, and another paper obtained the opposite result. Previous search ignored all locations between skeletal muscle and the right heart. Oxygen sensors other than the arterial chemoreceptors do exist...
October 19, 2017: Experimental Physiology
https://www.readbyqxmd.com/read/29052256/structure-and-function-of-human-tyrosinase-and-tyrosinase-related-proteins
#10
Xuelei Lai, Harry J Wichers, Montserrat Soler-Lopez, Bauke W Dijkstra
Melanin is the main pigment responsible for the colour of human skin, hair and eye. Its biosynthesis requires three melanogenic enzymes, tyrosinase (TYR), and the tyrosinase-related proteins TYRP1 and TYRP2. The difficulty of isolating pure and homogeneous proteins from endogenous sources has hampered their study, and resulted in many contradictory findings regarding their physiological functions. In this review, we summarize recent advances on the structure and function of TYR and TYRPs by virtue of the crystal structure of human TYRP1, which is the first available structure of a mammalian melanogenic enzyme...
October 20, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/29052004/hypoxia-regulated-catecholamine-secretion-in-chromaffin-cells
#11
REVIEW
Colin A Nurse, Shaima Salman, Angela L Scott
Adrenal catecholamine (CAT) secretion is a general physiological response of animals to environmental stressors such as hypoxia. This represents an important adaptive mechanism to maintain homeostasis and protect vital organs such as the brain. In adult mammals, CAT secretory responses are triggered by activation of the sympathetic nervous system that supplies cholinergic innervation of adrenomedullary chromaffin cells (AMC) via the splanchnic nerve. In the neonate, the splanchnic innervation of AMC is immature or absent, yet hypoxia stimulates a non-neurogenic CAT secretion that is critical for adaptation to extra-uterine life...
October 19, 2017: Cell and Tissue Research
https://www.readbyqxmd.com/read/29051950/self-assembly-of-peptide-amphiphiles-for-drug-delivery-the-role-of-peptide-primary-and-secondary-structures
#12
REVIEW
Zhenhua Song, Xing Chen, Xinru You, Keqing Huang, Arvind Dhinakar, Zhipeng Gu, Jun Wu
Peptide amphiphiles (PAs), functionalized with alkyl chains, are capable of self-assembling into various nanostructures. Recently, PAs have been considered as ideal drug carriers due to their good biocompatibility, specific biological functions, and hypotoxicity to normal cells and tissues. Meanwhile, the nanocarriers formed by PAs are able to achieve controlled drug release and enhanced cell uptake in response to the stimulus of the physiological environment or specific biological factors in the location of the lesion...
October 20, 2017: Biomaterials Science
https://www.readbyqxmd.com/read/29051890/considerations-for-pediatric-burn-sedation-and-analgesia
#13
REVIEW
Alice Fagin, Tina L Palmieri
Burn patients experience anxiety and pain in the course of their injury, treatment, and recovery. Hence, treatment of anxiety and pain is paramount after burn injury. Children, in particular, pose challenges in anxiety and pain management due to their unique physiologic, psychologic, and anatomic status. Burn injuries further complicate pain management and sedation as such injuries can have effects on medication response and elimination. Burn injuries further complicate pain management and sedation as such injuries can have effects on medication response and elimination...
2017: Burns and trauma
https://www.readbyqxmd.com/read/29051191/role-of-thyroid-hormone-in-skeletal-muscle-physiology
#14
Flavia F Bloise, Aline Cordeiro, Tania Maria Ortiga-Carvalho
Thyroid hormones (TH) are crucial for development, growth, differentiation, metabolism and thermogenesis. Skeletal muscle (SM) contractile function, myogenesis and bioenergetic metabolism are influenced by TH. These effects depend on the presence of the TH transporters MCT8 and MCT10 in the plasma membrane, the expression of TH receptors (THRA or THRB) and hormone availability, which is determined either by the activation of thyroxine (T4) into triiodothyronine (T3) by type 2 iodothyronine deiodinases (D2) or by the inactivation of T4 into reverse T3 by deiodinases type 3 (D3)...
October 19, 2017: Journal of Endocrinology
https://www.readbyqxmd.com/read/29051094/modification-of-proteins-and-polysaccharides-using-dodecenyl-succinic-anhydride-synthesis-properties-and-applications-a-review
#15
REVIEW
Nirali N Shah, Niharika Soni, Rekha S Singhal
Proteins and polysaccharides are among the biopolymers produced by living organisms for their structural integrity, protection, physiological functions or as reserve energy. These biopolymers are extracted from their natural matrices by humans to fulfil basic as well as convenience needs. The inquisitive human nature, ever-growing demands and resources at disposal have led to copious research in the field of biopolymer modifications. The availability of reactive sites on these biopolymers make them suitable substrates for esterification, etherification, oxidation, epoxidation, N-acylation, alkylation, etc...
October 16, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29050989/feed-your-friends-do-plant-exudates-shape-the-root-microbiome
#16
REVIEW
Joelle Sasse, Enrico Martinoia, Trent Northen
Plant health in natural environments depends on interactions with complex and dynamic communities comprising macro- and microorganisms. While many studies have provided insights into the composition of rhizosphere microbiomes (rhizobiomes), little is known about whether plants shape their rhizobiomes. Here, we discuss physiological factors of plants that may govern plant-microbe interactions, focusing on root physiology and the role of root exudates. Given that only a few plant transport proteins are known to be involved in root metabolite export, we suggest novel families putatively involved in this process...
October 16, 2017: Trends in Plant Science
https://www.readbyqxmd.com/read/29050664/sodium-chloride-does-not-ensure-microbiological-safety-of-foods-cases-and-solutions
#17
Nam Hee Kim, Tae Jin Cho, Min Suk Rhee
Addition of salt or salt-containing water to food is one of the oldest and most effective preservation methods in history; indeed, salt-cured foods are generally recognized as microbiologically safe due to their high salinity. However, a number of microbiological risks remain. The microbiological hazards and risks associated with salt-cured foods must be addressed more in-depth as they are likely to be underestimated by previous studies. This review examined a number of scientific reports and articles about the microbiological safety of salt-cured foods, which included salted, brined, pickled, and/or marinated vegetables, meat, and seafood...
2017: Advances in Applied Microbiology
https://www.readbyqxmd.com/read/29050006/recent-insights-into-the-biological-functions-of-sestrins-in-health-and-disease
#18
Menglong Wang, Yao Xu, Jianfang Liu, Jing Ye, Wenhui Yuan, Huimin Jiang, Zhen Wang, Hong Jiang, Jun Wan
Sestrins (Sesns) have been identified as a family of highly conserved stress-inducible proteins that are strongly up-regulated by various stresses, including DNA damage, oxidative stress, and hypoxia. The Sesns play protective roles in most physiological and pathological conditions mainly through the regulation of oxidative stress, inflammation, autophagy, endoplasmic reticulum stress, and metabolic homeostasis. In this review, we discussed the possible regulators of Sesns expression, such as p53, forkhead box O, nuclear factor erythroid 2 like 2 (Nrf2), NH (2)-terminal kinase (JNK)/c-Jun pathway and hypoxia-inducible factor-1α (Hif-1α), and the downstream pathways regulated by the Sesns including AMP-activated protein kinase (AMPK)/mammalian target of rapamycin (mTOR) signaling, mitogen-activated protein kinases (MAPKs) signaling, Nrf2 signaling, NADPH oxidase signaling and transforming growth factor β (TGF-β) signaling in heart diseases, lung diseases, gastrointestinal tract diseases, liver and metabolism diseases, neurological diseases, kidney diseases and immunological diseases...
October 19, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29049930/antibiotic-efficacy-context-matters
#19
REVIEW
Jason H Yang, Sarah C Bening, James J Collins
Antibiotic lethality is a complex physiological process, sensitive to external cues. Recent advances using systems approaches have revealed how events downstream of primary target inhibition actively participate in antibiotic death processes. In particular, altered metabolism, translational stress and DNA damage each contribute to antibiotic-induced cell death. Moreover, environmental factors such as oxygen availability, extracellular metabolites, population heterogeneity and multidrug contexts alter antibiotic efficacy by impacting bacterial metabolism and stress responses...
October 16, 2017: Current Opinion in Microbiology
https://www.readbyqxmd.com/read/29049872/optimal-dosing-and-delivery-of-pth-and-its-analogues-for-osteoporosis-and-hypoparathyroidism-translating-the-pharmacology
#20
REVIEW
D Tay, S Cremers, J P Bilezikian
In primary hyperparathyroidism (PHPT), bone loss results from the resorptive effects of excess parathyroid hormone (PTH). Under physiological conditions, PTH has actions that are more targeted to homeostasis and to bone accrual. The predominant action of PTH, either catabolic, anabolic, or homeostatic, can be understood in molecular and pharmacokinetic terms. When administered intermittently, PTH increases bone mass, but when present continuously and in excess (e.g., PHPT), bone loss ensues. This dual effect of PTH depends not only on the dosing regimen, continuous or intermittent, but also on how the PTH molecule interacts with various states of its receptor (PTH/PTHrP receptor) influencing downstream signaling pathways differentially...
October 19, 2017: British Journal of Clinical Pharmacology
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