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https://www.readbyqxmd.com/read/28820884/let-s-rise-up-to-unite-taxonomy-and-technology
#1
Holly M Bik
What do you think of when you think of taxonomy? An 18th century gentlemen in breeches? Or perhaps botany drawings hung on the walls of a boutique hotel? Such old-fashioned conceptions to the contrary, taxonomy is alive today although constantly struggling for survival and recognition. The scientific community is losing valuable resources as taxonomy experts age and retire, and funding for morphological studies and species descriptions remains stagnant. At the same time, organismal knowledge (morphology, ecology, physiology) has never been more important: genomic studies are becoming more taxon focused, the scientific community is recognizing the limitations of traditional "model" organisms, and taxonomic expertise is desperately needed to fight against global biodiversity declines resulting from human impacts...
August 2017: PLoS Biology
https://www.readbyqxmd.com/read/28820870/controversies-in-the-identification-and-management-of-acute-pulmonary-hypertension-in-preterm-neonates
#2
REVIEW
Regan E Giesinger, Kiran More, Jodie Odame, Amish Jain, Robert P Jankov, Patrick J McNamara
It is increasingly recognized that the abnormal physiologic consequences of pulmonary hypertension (PH) may contribute to poor cardiopulmonary health in premature babies. Conflicting literature has led to clinical uncertainty, pathological misinterpretation and variability in treatment approaches among practitioners. There are several disorders with overlapping and interrelated presentations and other disorders with a similar clinical phenotype but diverse pathophysiological contributors. In this review, we provide a diagnostic approach for acute HRF in the preterm neonate, outline the pathophysiological conditions that may present as acute PH and discuss the implications of high pulmonary vascular resistance (PVR) on the cardiovascular system...
August 18, 2017: Pediatric Research
https://www.readbyqxmd.com/read/28820506/physiological-and-ecological-implications-of-an-iron-or-hydrogen-oxidizing-member-of-the-zetaproteobacteria-ghiorsea-bivora-gen-nov-sp-nov
#3
Jiro F Mori, Jarrod J Scott, Kevin W Hager, Craig L Moyer, Kirsten Küsel, David Emerson
Chemosynthetic Fe-oxidizing communities are common at diffuse-flow hydrothermal vents throughout the world's oceans. The foundational members of these communities are the Zetaproteobacteria, a class of Proteobacteria that is primarily associated with ecosystems fueled by ferrous iron, Fe(II). We report here the discovery of two new isolates of Zetaproteobacteria isolated from the Mid-Atlantic Ridge (TAG-1), and the Mariana back-arc (SV-108), that are unique in that they can utilize either Fe(II) or molecular hydrogen (H2) as sole electron donor and oxygen as terminal electron acceptor for growth...
August 18, 2017: ISME Journal
https://www.readbyqxmd.com/read/28820040/effect-of-interhospital-icu-relocation-on-patient-physiology-and-clinical-outcomes
#4
David R Janz, Yasin A Khan, Jennifer L Mooney, Matthew W Semler, Todd W Rice, Jessica L Johnson, Bennett P deBoisblanc
Relocation of large numbers of critically ill patients between hospitals is sometimes necessary and the risks associated with relocation may be high. In the setting of adherence to an interhospital intensive care unit (ICU) relocation protocol, we aimed to determine whether the interhospital relocation of all ICU patients in a single day is associated with changes in vital signs, device removal, and worse clinical outcomes. We conducted a prospective, observational, cohort study of all critically ill adults admitted to a tertiary medical center's ICUs on the day of a planned hospital relocation and exposed to interhospital ICU relocation compared with unexposed critically ill adults...
January 1, 2017: Journal of Intensive Care Medicine
https://www.readbyqxmd.com/read/28819639/antioxidant-treatment-in-male-mice-prevents-mitochondrial-and-synaptic-changes-in-an-nmda-receptor-dysfunction-model-of-schizophrenia
#5
Aarron Phensy, Christopher Driskill, Karen Lindquist, Lan Guo, Vivek Jeevakumar, Bryan Fowler, Heng Du, Sven Kroener
Glutamate theories of schizophrenia suggest that the disease is associated with a loss of NMDA receptors, specifically on GABAergic parvalbumin-expressing interneurons (PVIs), leading to changes in the excitation-inhibition balance in the prefrontal cortex (PFC). Oxidative stress contributes to the loss of PVI and the development of schizophrenia. Here, we investigated whether the glutathione precursor N-acetyl cysteine (NAC) can prevent changes in synaptic transmission at pyramidal cells and PVIs that result from developmental NMDAR blockade and how these changes are related to mitochondrial dysfunction in the PFCs of mice...
July 2017: ENeuro
https://www.readbyqxmd.com/read/28819410/characterization-of-the-role-of-the-malate-dehydrogenases-to-lung-tumor-cell-survival
#6
Boxi Zhang, Johan Tornmalm, Jerker Widengren, Helin Vakifahmetoglu-Norberg, Erik Norberg
Cellular compartmentalization of biochemical processes in eukaryotic cells is critical for many functions including shuttling of reducing equivalents across membranes. Although coordination of metabolic flux between different organelles is vital for cell physiology, its impact on tumor cell survival is not well understood. By using an integrative approach, we have dissected the role of the key metabolic enzymes Malate dehydrogenases (MDH1 and MDH2) to the survival of Non-small Cell Lung Carcinomas. Here, we report that while both the MDH1 (cytosolic) and the MDH2 (mitochondrial) enzymes display elevated levels in patients compared to normal counterparts, only high expression of MDH1 is associated with poor prognosis...
2017: Journal of Cancer
https://www.readbyqxmd.com/read/28819233/biology-physiology-and-gene-expression-of-grasshopper-oedaleus-asiaticus-exposed-to-diet-stress-from-plant-secondary-compounds
#7
Xunbing Huang, Jingchuan Ma, Xinghu Qin, Xiongbing Tu, Guangchun Cao, Guangjun Wang, Xiangqun Nong, Zehua Zhang
We studied the role of plant primary and secondary metabolites in mediating plant-insect interactions by conducting a no-choice single-plant species field experiment to compare the suitability, enzyme activities, and gene expression of Oedaleus asiaticus grasshoppers feeding on four host and non-host plants with different chemical traits. O. asiaticus growth showed a positive relationship to food nutrition content and a negative relationship to secondary compounds content. Grasshopper amylase, chymotrypsin, and lipase activities were positively related to food starch, crude protein, and lipid content, respectively...
August 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28819220/nosema-ceranae-fipronil-and-their-combination-compromise-honey-bee-reproduction-via-changes-in-male-physiology
#8
Guillaume Kairo, David G Biron, Faten Ben Abdelkader, Marc Bonnet, Sylvie Tchamitchian, Marianne Cousin, Claudia Dussaubat, Boris Benoit, André Kretzschmar, Luc P Belzunces, Jean-Luc Brunet
The honey bee is threatened by biological agents and pesticides that can act in combination to induce synergistic effects on its physiology and lifespan. The synergistic effects of a parasite/pesticide combination have been demonstrated on workers and queens, but no studies have been performed on drones despite their essential contribution to colony sustainability by providing semen diversity and quality. The effects of the Nosema ceranae/fipronil combination on the life traits and physiology of mature drones were examined following exposure under semi-field conditions...
August 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28819204/prognostic-factors-and-outcomes-of-unplanned-extubation
#9
Chien-Ming Chao, Mei-I Sung, Kuo-Chen Cheng, Chih-Cheng Lai, Khee-Siang Chan, Ai-Chin Cheng, Shu-Chen Hsing, Chin-Ming Chen
This study investigated the prognostic factors and outcomes of unplanned extubation (UE) in patients in a medical center's 6 intensive care units (ICUs) and calculated their mortality risk. We retrospectively reviewed the medical records of all adult patients in Chi Mei Medical Center who underwent UE between 2009 and 2015. During the study period, there were 305 episodes of UE in 295 ICU patients (men: 199 [67.5%]; mean age: 65.7 years; age range: 18-94 years). The mean Acute Physiology and Chronic Health Evaluation (APACHE) II score was 16...
August 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28819145/remote-sensing-of-seasonal-light-use-efficiency-in-temperate-bog-ecosystems
#10
R Tortini, N C Coops, Z Nesic, A Christen, S C Lee, T Hilker
Despite storing approximately half of the atmosphere's carbon, estimates of fluxes between wetlands and atmosphere under current and future climates are associated with large uncertainties, and it remains a challenge to determine human impacts on the net greenhouse gas balance of wetlands at the global scale. In this study we demonstrate that the relationship between photochemical reflectance index, derived from high spectral and temporal multi-angular observations, and vegetation light use efficiency was strong (r(2) = 0...
August 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28819139/landscape-of-submitochondrial-protein-distribution
#11
F-Nora Vögtle, Julia M Burkhart, Humberto Gonczarowska-Jorge, Cansu Kücükköse, Asli Aras Taskin, Dominik Kopczynski, Robert Ahrends, Dirk Mossmann, Albert Sickmann, René P Zahedi, Chris Meisinger
The mitochondrial proteome comprises ~1000 (yeast)-1500 (human) different proteins, which are distributed into four different subcompartments. The sublocalization of these proteins within the organelle in most cases remains poorly defined. Here we describe an integrated approach combining stable isotope labeling, various protein enrichment and extraction strategies and quantitative mass spectrometry to produce a quantitative map of submitochondrial protein distribution in S. cerevisiae. This quantitative landscape enables a proteome-wide classification of 986 proteins into soluble, peripheral, and integral mitochondrial membrane proteins, and the assignment of 818 proteins into the four subcompartments: outer membrane, inner membrane, intermembrane space, or matrix...
August 18, 2017: Nature Communications
https://www.readbyqxmd.com/read/28818834/designing-and-implementing-a-physiology-course-for-a-new-doctoral-occupational-therapy-program-with-student-feedback
#12
Barbara E Goodman, Moses N Ikiugu
Recently, the Occupational Therapy Department requested a custom-designed medical physiology course for the students in the new occupational therapy doctoral program. The first author, a physiologist with extensive experience in teaching both undergraduate preprofessional and medical students in human physiology, was recruited to design and implement the course. The course was designed to be consistent with the constructivist philosophy that guides the occupational therapy curriculum. The course was offered for the first time during fall/spring 2015/2016 and included both first- and second-year occupational therapy doctoral students...
September 1, 2017: Advances in Physiology Education
https://www.readbyqxmd.com/read/28818833/using-whiteboards-to-support-college-students-learning-of-complex-physiological-concepts
#13
Caron Y Inouye, Christine L Bae, Kathryn N Hayes
Research underscores the importance of retrieval-based practice and application of knowledge for meaningful learning. However, the didactic lecture format continues to persist in traditional university physiology courses. A strategy called whiteboarding, where students use handheld dry erase boards and work in small groups to actively retrieve, discuss, and apply concepts presented in the lecture, has the potential to address challenges associated with actively engaging students in science courses for greater learning...
September 1, 2017: Advances in Physiology Education
https://www.readbyqxmd.com/read/28818736/co-option-of-endogenous-viral-sequences-for-host-cell-function
#14
REVIEW
John A Frank, Cédric Feschotte
Eukaryotic genomes are littered with sequences of diverse viral origins, termed endogenous viral elements (EVEs). Here we used examples primarily drawn from mammalian endogenous retroviruses to document how the influx of EVEs has provided a source of prefabricated coding and regulatory sequences that were formerly utilized for viral infection and replication, but have been occasionally repurposed for cellular function. While EVE co-option has benefited a variety of host biological functions, there appears to be a disproportionate contribution to immunity and antiviral defense...
August 14, 2017: Current Opinion in Virology
https://www.readbyqxmd.com/read/28818665/irf-5-accelerates-leukocyte-adhesion-to-endothelial-cells-in-ischemia-reperfusion-injury-through-regulating-the-transcription-of-vcam-1
#15
Hongbin Cai, Zhuhua Yao, Wenting Li
Ischemia-reperfusion injury (IRI) has been implicated in many pathological conditions, including cardiovascular diseases. Adhesion of leukocytes to the surface of endothelial cells has been considered as one of the principle steps in the pathological cascade of inflammatory tissue damage during IRI. The role of the transcriptional factor interferon regulatory factor-5 (IRF-5) in endothelial physiology remains unknown. Here, we report that IRF-5 is expressed in human umbilical vein endothelial cells (HUVECs) and is rapidly upregulated in response to IRI, mediated by the JAK2/STAT3 pathway...
August 14, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28818484/the-physiology-of-submaximal-exercise-the-steady-state-concept
#16
REVIEW
Guido Ferretti, Nazzareno Fagoni, Anna Taboni, Paolo Bruseghini, Giovanni Vinetti
The steady state concept implies that the oxygen flow is invariant and equal at each level along the respiratory system. The same is the case with the carbon dioxide flow. This condition has several physiological consequences, which are analysed. First, we briefly discuss the mechanical efficiency of exercise and the energy cost of human locomotion, as well as the roles played by aerodynamic work and frictional work. Then we analyse the equations describing the oxygen flow in lungs and in blood, the effects of ventilation and of the ventilation - perfusion inequality, and the interaction between diffusion and perfusion in the lungs...
August 14, 2017: Respiratory Physiology & Neurobiology
https://www.readbyqxmd.com/read/28818476/complex-anatomic-abnormalities-of-the-lower-leg-muscles-and-tendons-associated-with-phocomelia-a-case-report
#17
Thomas Hodo, Mark Hamrick, Yulia Melenevsky
Musculoskeletal anatomy is widely known to have components that stray from the norm in the form of variant muscle and tendon presence, absence, origin, insertion, and bifurcation. Although these variant muscles and tendons might be deemed incidental and insignificant findings by most, they can be important contributors to pathologic physiology or, more importantly, an option for effective treatment. In the present case report, we describe a patient with phocomelia and Müllerian abnormalities secondary to in utero thalidomide exposure...
August 14, 2017: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/28818377/heterologous-expression-of-gmsip1-3-from-soybean-in-tobacco-showed-and-growth-retardation-and-tolerance-to-hydrogen-peroxide
#18
Dayong Zhang, Yihong Huang, Manoj Kumar, Qun Wan, Zhaolong Xu, Hongbo Shao, Girdhar K Pandey
Aquaporins (AQPs) are transmembrane protein channels that are members of Major Intrinsic Proteins (MIP) superfamily. AQPs play important roles in plant reproduction, cell elongation, osmoregulation, influence leaf physiology and are responsive to drought and salt tolerance. Small intrinsic proteins (SIPs)belongs to one of the groups of AQPs, which are mainly localized to endoplasmic reticulum(ER). While this group of aquaporin is being well studied in Arabidopsis, grape and other plant species, not much is known about the molecular regulatory mechanisms driven by ER-type AQPs in Glycine Max...
October 2017: Plant Science: An International Journal of Experimental Plant Biology
https://www.readbyqxmd.com/read/28818213/the-natural-history-and-outcomes-of-line-associated-upper-extremity-deep-venous-thromboses-in-critically-ill-patients
#19
Joshua Underhill, Matthew A Sherman, Ryan Howard, Anthony Hage, Andrea Obi, Lena Napolitano, Dawn M Coleman
OBJECTIVE: Anticoagulation remains the standard of care for line-associated upper extremity deep venous thrombosis (UEDVT). This treatment carries the risk of hemorrhagic complications, possibly more so in surgical patients. Considering the low-risk profile of UEDVT-which is associated with fewer, less severe pulmonary emboli than lower extremity deep venous thrombosis-current UEDVT treatment guidelines may be overly aggressive. The goal of this study was to review outcomes of line-associated UEDVT in critically ill patients and to define the efficacy of current treatment protocols in pulmonary embolism (PE) prevention while avoiding hemorrhagic complications...
September 2017: Journal of Vascular Surgery. Venous and Lymphatic Disorders
https://www.readbyqxmd.com/read/28818162/impact-of-a-social-media-group-page-on-undergraduate-medical-physiology-learning
#20
Tania Ahmed Shakoori, Usman Mahboob, Janet Strivens, Ian Willis
OBJECTIVE: To investigate the impact of associating classroom learning of medical physiology with a Facebook group page in an all-women medical college of a conservative small city in Pakistan. STUDY DESIGN: Qualitative interpretivist study using semi-structured interviews. PLACE AND DURATION OF STUDY: Women Medical College Abbottabad, Pakistan, from March to December 2014. METHODOLOGY: Aclosed Facebook study group was established at a local medical college in Pakistan...
July 2017: Journal of the College of Physicians and Surgeons—Pakistan: JCPSP
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