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https://www.readbyqxmd.com/read/28743172/modelling-nutritional-mutualisms-challenges-and-opportunities-for-data-integration
#1
REVIEW
Teresa J Clark, Colleen A Friel, Emily Grman, Yair Shachar-Hill, Maren L Friesen
Nutritional mutualisms are ancient, widespread, and profoundly influential in biological communities and ecosystems. Although much is known about these interactions, comprehensive answers to fundamental questions, such as how resource availability and structured interactions influence mutualism persistence, are still lacking. Mathematical modelling of nutritional mutualisms has great potential to facilitate the search for comprehensive answers to these and other fundamental questions by connecting the physiological and genomic underpinnings of mutualisms with ecological and evolutionary processes...
July 25, 2017: Ecology Letters
https://www.readbyqxmd.com/read/28743147/-development-of-anaesthesia-related-mortality-and-impact-on-perioperative-outcome
#2
Peter Rosenberger, Berthold Drexler
Achievements in anaesthesiology form the basis for the tremendous development of surgical therapy. Reliable monitoring technology, which is scrutinized on a regular basis using checklists, is allowing anaesthesia at the borders of physiology. During the last decades, anaesthesia-related mortality has been decreasing considerably. Well-trained anaesthesiology staff, who considers patient- and procedure-specific risks in anaesthetic management, is of major importance. Furthermore, postoperative care in specialised units and intensive care wards is a key factor of improved patient outcome after surgery...
July 2017: Anästhesiologie, Intensivmedizin, Notfallmedizin, Schmerztherapie: AINS
https://www.readbyqxmd.com/read/28743128/anti-vascular-endothelial-growth-factors-protect-retinal-pigment-epithelium-cells-against-oxidation-by-modulating-nitric-oxide-release-and-autophagy
#3
Stefano De Cillà, Serena Farruggio, Stela Vujosevic, Giulia Raina, Davide Filippini, Valentina Gatti, Nausicaa Clemente, David Mary, Diego Vezzola, Giamberto Casini, Luca Rossetti, Elena Grossini
BACKGROUND/AIMS: the anti-vascular endothelial growth factors (VEGF), Aflibercept and Ranibizumab, are used for the treatment of macular degeneration. Here we examined the involvement of nitric oxide (NO), mitochondria function and of apoptosis/autophagy in their antioxidant effects in human retinal pigment epithelium cells (RPE). METHODS: RPE were exposed to Ranibizumab/Aflibercept in the absence or presence of NO synthase (NOS) inhibitor and of autophagy activator/blocker, rapamicyn/3-methyladenine...
July 25, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28743111/sleep-and-olfaction-among-older-adults
#4
V Eloesa McSorley, Jayant Pinto, L Philip Schumm, Kristen Wroblewski, David Kern, Martha McClintock, Diane S Lauderdale
BACKGROUND: Sleep and olfaction are both critical physiological processes that tend to worsen with age. Decline in olfaction can be an early indicator of neurodegenerative diseases, whereas poor sleep quality is associated with reduced physical and mental health. Given associations with aging-related health declines, we explored whether variations in sleep were associated with olfactory function among older adults. METHODS: We assessed the relationship between sleep characteristics and olfaction among 354 community-dwelling older adults...
July 26, 2017: Neuroepidemiology
https://www.readbyqxmd.com/read/28743081/mycobacterium-tuberculosis-ppe44-rv2770c-is-involved-in-response-to-multiple-stresses-and-promotes-the-macrophage-expression-of-il-12-p40-and-il-6-via-the-p38-erk-and-nf-%C3%AE%C2%BAb-signaling-axis
#5
Zhaoxiao Yu, Chenhui Zhang, Mingliang Zhou, Qiming Li, Hui Li, Wei Duan, Xue Li, Yonghong Feng, Jianping Xie
Tuberculosis (TB), caused by Mycobacterium tuberculosis, remains a formidable threat to global public health. The successful intracellular persistence of M. tuberculosis significantly contributes to the intractability of tuberculosis. Proline-glutamic acid (PE) and proline-proline-glutamic acid (PPE) are mycobacterial exclusive protein families that widely reported to be involved in the bacterial virulence, physiology and interaction with host. Rv2770c (PPE44), a predicted virulence factor, was up-regulated upon the infected guinea pig lungs...
July 22, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28743051/enhancing-women-s-confidence-for-physiologic-birth-maternity-care-providers-perspectives
#6
Melissa A Saftner, Carrie Neerland, Melissa D Avery
OBJECTIVE: The aim of this research study was to explore MCP's beliefs and attitudes about physiologic birth and to identify components of antenatal care that providers believe may impact a woman's confidence for physiologic labor and birth. METHODS: This qualitative descriptive study included maternity care providers (N=31) in the Midwestern United States. Providers participated in semi-structured interviews to describe their beliefs about physiologic birth, their role in providing information to women and specific care practices to promote women's confidence for physiologic birth...
July 18, 2017: Midwifery
https://www.readbyqxmd.com/read/28743047/bohr-effect-of-human-hemoglobin-separation-of-tertiary-and-quaternary-contributions-based-on-the-wyman-equation
#7
Kehinde Onwochei Okonjo
As a prelude to separating tertiary from quaternary structure contributions to the Bohr effect, we employed the Wyman equation to analyze Bohr data for human hemoglobin to which 2,3-bisphosphoglycerate, 2,3-BPG, is bound. Changes in the pKas of the histidine Bohr groups result in a net reduction of their contributions to the Bohr effect at pH 7.4 compared to their contributions in stripped hemoglobin. The non-histidine 2,3-BPG binding groups - the β-chain terminal amino group and Lys82β - make negative and positive contributions, respectively, to the Bohr effect...
July 15, 2017: Biophysical Chemistry
https://www.readbyqxmd.com/read/28743044/electrophysiological-and-gene-expression-characterization-of-the-ontogeny-of-nestin-expressing-cells-in-the-adult-mouse-midbrain
#8
Anupama Dey, Parisa Farzanehfar, Elena V Gazina, Tim D Aumann
The birth of new neurons, or neurogenesis, in the adult midbrain is important for progressing dopamine cell-replacement therapies for Parkinson's disease. Most studies suggest newborn cells remain undifferentiated or differentiate into glia within the adult midbrain. However, some studies suggest nestin+neural precursor cells (NPCs) have a propensity to generate new neurons here. We sought to confirm this by administering tamoxifen to adult NesCreER(T2)/R26eYFP transgenic mice, which permanently labelled adult nestin-expressing cells and their progeny with enhanced yellow fluorescent protein (eYFP)...
July 4, 2017: Stem Cell Research
https://www.readbyqxmd.com/read/28743038/physiological-vascular-and-nanomechanical-assessment-of-hybrid-poplar-leaf-traits-in-micropropagated-plants-and-plants-propagated-from-root-cuttings-a-contribution-to-breeding-programs
#9
Jaroslav Ďurkovič, Hana Husárová, Lucia Javoříková, Ingrid Čaňová, Miriama Šuleková, Monika Kardošová, Ivan Lukáčik, Miroslava Mamoňová, Rastislav Lagaňa
Micropropagated plants experience significant stress from rapid water loss when they are transferred from an in vitro culture to either greenhouse or field conditions. This is caused both by inefficient stomatal control of transpiration and the change to a higher light intensity and lower humidity. Understanding the physiological, vascular and biomechanical processes that allow micropropagated plants to modify their phenotype in response to environmental conditions can help to improve both field performance and plant survival...
July 13, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28742954/carbon-dioxide-elimination-by-cardiomyocytes-a-tale-of-high-carbonic-anhydrase-activity-and-membrane-permeability
#10
EDITORIAL
Erik R Swenson
Life as a multicellular organism requires a heart with a coordinated contractile activity that must never cease, and in this regard, it is very much like the brain with a high mass-specific 'resting' metabolic rate. To maintain this constant activity requires a high rate of oxygen consumption and resultant carbon dioxide generation and, pari passu, the rapid exchange of large amounts of these gases with capillary blood. While oxygen has been far more the focus of the two gases in cardiac physiology, the work of Arias-Hidalgo et al (1) in this issue of the journal offers new insights and better understanding of how CO2 uniquely traverses its path from production in the mitochondria to the capillary blood, and does so with much smaller driving gradients than necessary for oxygen...
July 25, 2017: Acta Physiologica
https://www.readbyqxmd.com/read/28742939/disparate-peroxisome-related-defects-in-arabidopsis-pex6-and-pex26-mutants-link-peroxisomal-retrotranslocation-and-oil-body-utilization
#11
Kim L Gonzalez, Wendell A Fleming, Yun-Ting Kao, Zachary J Wright, Savina V Venkova, Meredith J Ventura, Bonnie Bartel
Catabolism of fatty acids stored in oil bodies is essential for Arabidopsis seed germination and seedling development. This fatty acid breakdown occurs in peroxisomes, organelles that sequester oxidative reactions. Import of peroxisomal enzymes is facilitated by peroxins including PEX5, a receptor that delivers cargo proteins from the cytosol to the peroxisomal matrix. After cargo delivery, a complex of the PEX1 and PEX6 ATPases and the PEX26 tail-anchored membrane protein removes ubiquitinated PEX5 from the peroxisomal membrane...
July 25, 2017: Plant Journal: for Cell and Molecular Biology
https://www.readbyqxmd.com/read/28742938/sexes-in-gynodioecious-geranium-sylvaticum-do-not-differ-in-their-isotopic-signature-or-photosynthetic-capacity
#12
Sandra Varga, Minna-Maarit Kytöviita
In gynodioecious plants, females are expected to produce more or better seeds than hermaphrodites in order to be maintained within the same population. Even though rarely measured, higher seed production can be achieved through differences in physiology. In this work, we measured sexual dimorphism in several physiological traits in the gynodioecious plant Geranium sylvaticum. Photosynthetic rate, stomatal conductivity, transpiration rate, water use efficiency and isotopic signatures were measured in plants growing in two habitats differing in light availability...
July 25, 2017: Plant Biology
https://www.readbyqxmd.com/read/28742931/dynamics-of-lipids-and-metabolites-during-the-cell-cycle-of-chlamydomonas-reinhardtii
#13
Jessica Jüppner, Umarah Mubeen, Andrea Leisse, Camila Caldana, Henrike Brust, Martin Steup, Marion Herrmann, Dirk Steinhauser, Patrick Giavalisco
Metabolites and lipids are the final products of enzymatic processes, distinguishing the different cellular functions and activities of single cells or whole tissues. Understanding these cellular functions within a well-established model system, requires a systemic collection of molecular and physiological information. In the current report, the green algae Chlamydomonas reinhardtii was selected to establish a comprehensive workflow for the detailed multi-omics analysis of a synchronously growing cell culture system...
July 25, 2017: Plant Journal: for Cell and Molecular Biology
https://www.readbyqxmd.com/read/28742868/combining-ability-of-highland-tropic-adapted-potato-for-tuber-yield-and-yield-components-under-drought
#14
Betaw Hirut, Hussein Shimelis, Mengistu Fentahun, Merideth Bonierbale, Manuel Gastelo, Asrat Asfaw
Recurrent drought and late blight disease are the major factors limiting potato productivity in the northwest Ethiopian highlands. Incorporating drought tolerance and late blight resistance in the same genotypes will enable the development of cultivars with high and stable yield potential under erratic rainfall conditions. The objectives of this study were to assess combining ability effects and gene action for tuber yield and traits related to drought tolerance in the International Potato Centre's (CIP's) advanced clones from the late blight resistant breeding population B group 'B3C2' and to identify promising parents and families for cultivar development...
2017: PloS One
https://www.readbyqxmd.com/read/28742758/the-effect-of-an-adjustable-hinged-operating-table-on-lumbar-lordosis-during-lumbar-surgery
#15
Arjun Sebastian, Amin Ahmed, Brian Vernon, Emily C Nguyen, Ilyas Aleem, Michelle J Clarke, Bradford L Currier, Paul Anderson, Mohamad Bydon, Ahmad Nassr
STUDY DESIGN: Prospective observational study OBJECTIVES.: Quantify the amount of lumbar lordosis achieved on a hinged operative table in neutral, flexion, and extension. SUMMARY OF BACKGROUND DATA: Hinged operative tables may allow surgeons to adjust lumbar spine positioning intraoperatively. The amount of lumbar lordosis in neutral, flexion, and extension positions has not been quantified prospectively using a hinged table. METHODS: Thirty patients undergoing elective lumbar surgery were enrolled...
July 24, 2017: Spine
https://www.readbyqxmd.com/read/28742733/intravoxel-incoherent-motion-model-free-determination-of-tissue-type-in-abdominal-organs-using-machine-learning
#16
Alexander Ciritsis, Cristina Rossi, Moritz C Wurnig, Valerie Phi Van, Andreas Boss
PURPOSE: For diffusion data sets including low and high b-values, the intravoxel incoherent motion model is commonly applied to characterize tissue. The aim of the present study was to show that machine learning allows a model-free approach to determine tissue type without a priori assumptions on the underlying physiology. MATERIALS AND METHODS: In 8 healthy volunteers, diffusion data sets were acquired using an echo-planar imaging sequence with 16 b-values in the range between 0 and 1000 s/mm...
July 24, 2017: Investigative Radiology
https://www.readbyqxmd.com/read/28742717/integrating-an-interprofessional-education-experience-into-a-human-physiology-course
#17
Scott Edwards, Patricia E Molina, Kathleen H McDonough, Donald E Mercante, Tina P Gunaldo
PURPOSE: To obtain physician assistant (PA) student perceptions about an interprofessional education (IPE) training experience embedded in a multidisciplinary science course. METHODS: An IPE training experience was integrated into a graduate human physiology course offered to PA, physical therapy, and graduate studies students. The focus of the activity related to the Interprofessional Education Collaborative (IPEC) competency domains of (1) roles and responsibilities and (2) teams and teamwork...
July 20, 2017: Journal of Physician Assistant Education
https://www.readbyqxmd.com/read/28742622/rational-therapeutic-choice-for-older-patients-with-lymphoma
#18
Dominique Bron, Pierre Soubeyran
PURPOSE OF REVIEW: The choice for an optimal treatment in older lymphoma patients is a real challenge for hemato-oncologists. They have to treat a potentially curative lymphoma, and concomitantly protect their patients from unacceptable toxicities. Some recommendations are provided for the major subtypes of lymphomas including the antitumoral treatment and primarily the optimal supportive care. RECENT FINDINGS: All the recent literature data converge to say that the approach of an older patient with a malignant hemopathy is a multistep procedure...
July 22, 2017: Current Opinion in Oncology
https://www.readbyqxmd.com/read/28742591/sonographic-tips-for-evaluation-of-adnexal-masses-in-pregnancy
#19
Timothy P Canavan
Pregnancy is frequently a women's first contact with the health care system and often her first pelvic ultrasound examination. This first sonogram can reveal previously unknown adnexal pathology. Approximately 4% of pregnant women will have an adnexal mass detected by sonography and 1% to 2% of these masses will persist. It is estimated that up to 7% of these persistent masses will be malignant. Sonography plays an important role in differentiating benign from malignant adnexal masses and physiological from pathologic masses and should be used judiciously to complement evaluation and help guide treatment...
September 2017: Clinical Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28742515/do-exercises-improve-back-pain-in-pregnancy
#20
Muhammad Azrai Abu, Nur Azurah Abdul Ghani, Lim Pei Shan, Aqmar Suraya Sulaiman, Mohd Hashim Omar, Mohd Hisam Muhamad Ariffin, Azmi Baharuddin, Shuhaila Shohaimi, Zuraidah Che Man
Objective To assess the efficacy of an exercise program towards reducing back pain in pregnant women. Methods In this prospective control study, 145 low risk pregnant women who scored more than 20 for functional limitation assessment were recruited. The severity of back pain was assessed using the visual analoque scale (VAS) and the functional limitation was assessed using the Oswestry disability questionnaire (ODQ). All participants were informed of back care measures and provided with Paracetamol as an adjunct analgesia...
July 25, 2017: Hormone Molecular Biology and Clinical Investigation
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