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https://www.readbyqxmd.com/read/28645163/variations-in-chloroplast-movement-and-chlorophyll-fluorescence-among-chloroplast-division-mutants-under-light-stress
#1
Siddhartha Dutta, Jeffrey A Cruz, Saif M Imran, Jin Chen, David M Kramer, Katherine W Osteryoung
Chloroplasts divide to maintain consistent size, shape, and number in leaf mesophyll cells. Altered expression of chloroplast division proteins in Arabidopsis results in abnormal chloroplast morphology. To better understand the influence of chloroplast morphology on chloroplast movement and photosynthesis, we compared the chloroplast photorelocation and photosynthetic responses of a series of Arabidopsis chloroplast division mutants with a wide variety of chloroplast phenotypes. Chloroplast movement was monitored by red light reflectance imaging of whole plants under increasing intensities of white light...
June 22, 2017: Journal of Experimental Botany
https://www.readbyqxmd.com/read/28644829/swapping-the-n-and-c-terminal-domains-of-human-apolipoprotein-e3-and-ai-reveals-insights-into-their-structure-activity-relationship
#2
Mark T Lek, Siobanth Cruz, Nnejiuwa U Ibe, Wendy H J Beck, John K Bielicki, Paul M M Weers, Vasanthy Narayanaswami
Apolipoprotein (apo) E3 and apoAI are exchangeable apolipoproteins that play a dominant role in regulating plasma lipoprotein metabolism. ApoE3 (299 residues) is composed of an N-terminal (NT) domain bearing a 4-helix bundle and a C-terminal (CT) domain bearing a series of amphipathic α-helices. ApoAI (243 residues) also comprises a highly helical NT domain and a less structured CT tail. The objective of this study was to understand their structural and functional role by generating domain swapped chimeras: apoE3-NT/apoAI-CT and apoAI-NT/apoE-CT...
2017: PloS One
https://www.readbyqxmd.com/read/28643787/single-virus-genomics-reveals-hidden-cosmopolitan-and-abundant-viruses
#3
Francisco Martinez-Hernandez, Oscar Fornas, Monica Lluesma Gomez, Benjamin Bolduc, Maria Jose de la Cruz Peña, Joaquín Martínez Martínez, Josefa Anton, Josep M Gasol, Riccardo Rosselli, Francisco Rodriguez-Valera, Matthew B Sullivan, Silvia G Acinas, Manuel Martinez-Garcia
Microbes drive ecosystems under constraints imposed by viruses. However, a lack of virus genome information hinders our ability to answer fundamental, biological questions concerning microbial communities. Here we apply single-virus genomics (SVGs) to assess whether portions of marine viral communities are missed by current techniques. The majority of the here-identified 44 viral single-amplified genomes (vSAGs) are more abundant in global ocean virome data sets than published metagenome-assembled viral genomes or isolates...
June 23, 2017: Nature Communications
https://www.readbyqxmd.com/read/28641871/the-patient-s-comorbidity-burden-correlates-with-the-erectile-dysfunction-severity
#4
E García-Cruz, A Carrión, T Ajami, M Álvarez, M Á Correas, B García, J V García, C González, J A Portillo, J Romero-Otero, C Simón, J Torremadé, F Vigués, A Alcaraz
OBJECTIVE: To explore the potential relationship between erectile dysfunction (ED), low testosterone levels, and the Charlson Comorbidity Index (CCI). MATERIAL AND METHODS: Cross-sectional study on patients referred to the andrology unit in 7 Spanish centers. The ED was diagnosed and graded using the International Index of Erectile Function (IIEF-5) score. Total testosterone, the prevalence of each comorbidity, and the CCI were compared between patients with different grades of ED...
June 19, 2017: Actas Urologicas Españolas
https://www.readbyqxmd.com/read/28636918/actin-filament-strain-promotes-severing-and-cofilin-dissociation
#5
Anthony C Schramm, Glen M Hocky, Gregory A Voth, Laurent Blanchoin, Jean-Louis Martiel, Enrique M De La Cruz
Computational and structural studies have been indispensable in investigating the molecular origins of actin filament mechanical properties and modulation by the regulatory severing protein cofilin. All-atom molecular dynamics simulations of cofilactin filament structures determined by electron cryomicroscopy reveal how cofilin enhances the bending and twisting compliance of actin filaments. Continuum mechanics models suggest that buckled cofilactin filaments localize elastic energy at boundaries between bare and cofilin-decorated segments because of their nonuniform elasticity, thereby accelerating filament severing...
June 20, 2017: Biophysical Journal
https://www.readbyqxmd.com/read/28633502/promoting-seniors-health-with-home-care-aides-a-pilot
#6
Naoko Muramatsu, Lijuan Yin, Michael L Berbaum, David X Marquez, Donald A Jurivich, Joseph P Zanoni, Katya Y Cruz Madrid, Surrey M Walton
Purpose: Regular physical activity (PA) benefits older adults. However, frail older adults lack opportunities to be physically active. This pilot study aimed to test and enhance the feasibility of a PA program delivered by home care aides (HCAs) for community-dwelling older adults in a Medicaid-funded home care setting and to generate preliminary efficacy and cost data. Design and Methods: HCAs were trained to deliver a brief motivational enhancement and three chair-bound movements to motivate their older clients to do PA daily and to help maintain their independence in the community...
June 17, 2017: Gerontologist
https://www.readbyqxmd.com/read/28631098/urolithins-impair-cell-proliferation-arrest-the-cell-cycle-and-induce-apoptosis-in-umuc3-bladder-cancer-cells
#7
Joana Liberal, Anália Carmo, Célia Gomes, Maria Teresa Cruz, Maria Teresa Batista
Ellagitannins have been gaining attention as potential anticancer molecules. However, the low bioavailability of ellagitannins and their extensive metabolization in the gastrointestinal tract into ellagic acid and urolithins suggest that the health benefits of consuming ellagitannins rely on the direct effects of their metabolites. Recently, chemopreventive and chemotherapeutic activities were ascribed to urolithins. Nonetheless, there is still a need to screen and evaluate the selectivity of these molecules and to elucidate their cellular mechanisms of action...
June 20, 2017: Investigational New Drugs
https://www.readbyqxmd.com/read/28630569/leadership-preferences-of-adolescent-players-in-sport-influence-of-coach-gender
#8
Angelita B Cruz, Hyun-Duck Kim
The authors investigated the coaching behavior preferences and the relationships of these preferences with variables such as gender, type of sport, playing experience, competitive level, and coach gender among young athletes in the national badminton league. Participants were 167 elementary and high school badminton players (91 girls and 76 boys; age range = 9-18 years; M = 13.5 (SD = 2.22) years) competing in the badminton event of a national league. Players' preferences for coaching behavior were measured using athlete preference version of the LSS to evaluate the five dimensions of leadership behavior in a sporting context...
June 2017: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/28628467/juvenile-and-adult-onset-systemic-lupus-erythematosus-a-comparative-study-in-a-large-cohort-from-the-spanish-society-of-rheumatology-lupus-registry-relesser
#9
Vicenç Torrente-Segarra, Tarek Carlos Salman Monte, Iñigo Rúa-Figueroa, Fernando Sánchez-Alonso, Francisco Javier López-Longo, María Galindo-Izquierdo, Jaime Calvo-Alén, Alejandro Olivé-Marqués, Jesús Ibañez-Ruán, Loreto Horcada, Ana Sánchez-Atrio, Carlos Montilla, Rafael Benito Melero González, Elvira Díez-Álvarez, Victor Martinez-Taboada, José Luis Andreu, Olaia Fernández-Berrizbeitia, José Ángel Hernández-Beriain, Marian Gantes, Blanca Hernández-Cruz, Ángela Pecondón-Español, Carlos Marras, Gema Bonilla, José M Pego-Reigosa
OBJECTIVES: We aimed to describe juvenile-onset systemic lupus erythematosus (jSLE) features and to establish its differences compared to adult-onset SLE (aSLE) from a large national database. METHODS: Data from patients (≥4 ACR criteria) included in Spanish Society of Rheumatology Lupus Registry (RELESSER) were analysed. Sociodemographic, clinical, serological, activity, treatment, cumulative damage, comorbidities and severity data were collected. Patients with disease onset <18 years were described and compared to those with disease onset ≥18 years...
June 12, 2017: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/28627294/polyphenolic-characterisation-and-bioactivity-of-an-oxalis-pes-caprae-l-leaf-extract
#10
Marisa C Gaspar, Diogo A Fonseca, Manuel J Antunes, Christian Frigerio, Nelson G M Gomes, M Vieira, Armanda E Santos, Maria T Cruz, Maria D Cotrim, Maria G Campos
The present work is focused on the characterisation of the polyphenolic content of an Oxalis pes-caprae L. leaf extract and on the evaluation of its bioactivity with particular interest on its vascular activity and antioxidant potential. The polyphenolic content was characterised by HPLC-DAD and LC-MS/MS. The vascular activity was evaluated according to the influence on the serotonergic and adrenergic systems of the human internal mammary artery (HIMA). Antioxidant and neuroprotective studies were also conducted...
June 18, 2017: Natural Product Research
https://www.readbyqxmd.com/read/28625744/the-anterior-sagittal-transrectal-approach-astra-for-cases-associated-with-rectal-implantation-of-the-urethra-a-retrospective-review-of-six-cases
#11
A Macedo, M I S Silva, J A Pompermaier, S L Ottoni, R de Castro, M Leal da Cruz
INTRODUCTION: Severe genital abnormalities such as urogenital sinus and urethral duplication with ectopic urethra in the rectum represent a major challenge in reconstructive urology. OBJECTIVE: We aimed to review our cases presenting with functional ectopic urethra implanted in the rectum that were treated through an ASTRA approach. METHODS: We reviewed the medical records of all patients who had undergone an ASTRA approach from 2005-2016...
May 17, 2017: Journal of Pediatric Urology
https://www.readbyqxmd.com/read/28624713/aneuploidy-identification-in-pre-b-acute-lymphoblastic-leukemia-patients-at-diagnosis-by-multiplex-ligation-dependent-probe-amplification-mlpa
#12
A Vázquez-Reyes, L Bobadilla-Morales, C Barba-Barba, G Macías-Salcedo, G Serafín-Saucedo, M E Velázquez-Rivera, M C Almodóvar-Cuevas, A Márquez-Mora, H J Pimentel-Gutiérrez, C Ortega-de-la-Torre, R M Cruz-Osorio, S Nava-Gervasio, J Rivera-Vargas, F Sánchez-Zubieta, J R Corona-Rivera, A Corona-Rivera
Three-quarters of the patients with acute lymphoblastic leukemia (ALL), show numerical or structural chromosomal alterations, which are important factors in leukemogenesis. The use of Multiplex Ligation-dependent Probes Amplification (MLPA) has been mainly limited for searching copy number alterations of genes, suggesting that MLPA could detect numerical alterations in cancer. However, the use of MLPA in pediatrics to analyze subtelomeric sequences for aneuploidy detection has not been considered in previous studies...
June 1, 2017: Leukemia Research
https://www.readbyqxmd.com/read/28624633/from-flamingo-dance-to-desirable-drug-discovery-a-nature-inspired-approach
#13
REVIEW
Aminael Sánchez-Rodríguez, Yunierkis Pérez-Castillo, Stephan C Schürer, Orazio Nicolotti, Giuseppe Felice Mangiatordi, Fernanda Borges, M Natalia D S Cordeiro, Eduardo Tejera, José L Medina-Franco, Maykel Cruz-Monteagudo
The therapeutic effects of drugs are well known to result from their interaction with multiple intracellular targets. Accordingly, the pharma industry is currently moving from a reductionist approach based on a 'one-target fixation' to a holistic multitarget approach. However, many drug discovery practices are still procedural abstractions resulting from the attempt to understand and address the action of biologically active compounds while preventing adverse effects. Here, we discuss how drug discovery can benefit from the principles of evolutionary biology and report two real-life case studies...
June 15, 2017: Drug Discovery Today
https://www.readbyqxmd.com/read/28623666/sox2-regulates-acinar-cell-development-in-the-salivary-gland
#14
Elaine Emmerson, Alison May, Sara Nathan, Noel Cruz Pacheco, Carlos O Lizama, Lenka Maliskova, Ann C Zovein, Yin Shen, Marcus O Muench, Sarah M Knox
Acinar cells play an essential role in the secretory function of exocrine organs. Despite this requirement, how acinar cells are generated during organogenesis is unclear. Using the acini-ductal network of the developing human and murine salivary gland, we demonstrate an unexpected role for SOX2 and parasympathetic nerves in generating the acinar lineage that has broad implications for epithelial morphogenesis. Despite SOX2 being expressed by progenitors that give rise to both acinar and duct cells, genetic ablation of SOX2 results in a failure to establish acini but not ducts...
June 17, 2017: ELife
https://www.readbyqxmd.com/read/28620826/individual-amino-acid-supplementation-can-improve-energy-metabolism-and-decrease-ros-production-in-neuronal-cells-overexpressing-alpha-synuclein
#15
Vedad Delic, Jeddidiah W D Griffin, Sandra Zivkovic, Yumeng Zhang, Tam-Anh Phan, Henry Gong, Dale Chaput, Christian Reynes, Vinh B Dinh, Josean Cruz, Eni Cvitkovic, Devon Placides, Ernide Frederic, Hamed Mirzaei, Stanley M Stevens, Umesh Jinwal, Daniel C Lee, Patrick C Bradshaw
Parkinson's disease (PD) is a neurodegenerative disorder characterized by alpha-synuclein accumulation and loss of dopaminergic neurons in the substantia nigra (SN) region of the brain. Increased levels of alpha-synuclein have been shown to result in loss of mitochondrial electron transport chain complex I activity leading to increased reactive oxygen species (ROS) production. WT alpha-synuclein was stably overexpressed in human BE(2)-M17 neuroblastoma cells resulting in increased levels of an alpha-synuclein multimer, but no increase in alpha-synuclein monomer levels...
June 15, 2017: Neuromolecular Medicine
https://www.readbyqxmd.com/read/28620590/functional-redundancy-and-ecological-innovation-shape-the-circulation-of-tick-transmitted-pathogens
#16
Agustín Estrada-Peña, José de la Fuente, Alejandro Cabezas-Cruz
Ticks are vectors of pathogens affecting human and animal health worldwide. Nevertheless, the ecological and evolutionary interactions between ticks, hosts, and pathogens are largely unknown. Here, we integrated a framework to evaluate the associations of the tick Ixodes ricinus with its hosts and environmental niches that impact pathogen circulation. The analysis of tick-hosts association suggested that mammals and lizards were the ancestral hosts of this tick species, and that a leap to Aves occurred around 120 M years ago...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28618507/contractile-actuation-and-dynamical-gel-assembly-of-paramagnetic-filaments-in-fast-precessing-fields
#17
Joshua M Dempster, Pablo Vázquez-Montejo, Monica Olvera de la Cruz
Flexible superparamagnetic filaments are studied under the influence of fast precessing magnetic fields using simulations and a continuum approximation analysis. We find that individual filaments can be made to exert controllable tensile forces along the precession axis. These forces are exploited for microscopic actuation. In bulk, the filaments can be rapidly assembled into different configurations whose material properties depend on the field parameters. The precession frequency affects filament aggregation and conformation by changing the net torques on the filament ends...
May 2017: Physical Review. E
https://www.readbyqxmd.com/read/28617977/psychometric-assessment-of-the-cultural-capacity-scale-spanish-version-in-chilean-nursing-students
#18
J P Cruz, F A Machuca Contreras, J E Ortiz López, C A Zapata Aqueveque, L M Vitorino
AIM: To assess the psychometric properties of the Cultural Capacity Scale Spanish version in Chilean nursing students. BACKGROUND: The increased diversity in healthcare facilities and the current shortage of local nursing workforce in Chile present a significant challenge to the nursing education to train future competent local nurses. To facilitate cultural competence development among Chilean nursing students, it is necessary to regularly assess their cultural competence, which necessitates a culturally adapted valid and reliable tool...
June 15, 2017: International Nursing Review
https://www.readbyqxmd.com/read/28617800/whole-genome-sequencing-distinguishes-between-relapse-and-reinfection-in-recurrent-leprosy-cases
#19
Mariane M A Stefani, Charlotte Avanzi, Samira Bührer-Sékula, Andrej Benjak, Chloé Loiseau, Pushpendra Singh, Maria A A Pontes, Heitor S Gonçalves, Emerith M Hungria, Philippe Busso, Jérémie Piton, Maria I S Silveira, Rossilene Cruz, Antônio Schetinni, Maurício B Costa, Marcos C L Virmond, Suzana M Diorio, Ida M F Dias-Baptista, Patricia S Rosa, Masanori Matsuoka, Maria L F Penna, Stewart T Cole, Gerson O Penna
BACKGROUND: Since leprosy is both treated and controlled by multidrug therapy (MDT) it is important to monitor recurrent cases for drug resistance and to distinguish between relapse and reinfection as a means of assessing therapeutic efficacy. All three objectives can be reached with single nucleotide resolution using next generation sequencing and bioinformatics analysis of Mycobacterium leprae DNA present in human skin. METHODOLOGY: DNA was isolated by means of optimized extraction and enrichment methods from samples from three recurrent cases in leprosy patients participating in an open-label, randomized, controlled clinical trial of uniform MDT in Brazil (U-MDT/CT-BR)...
June 15, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28609983/altitudinal-distribution-and-advertisement-call-of-i-colostethus-i-i-latinasus-i-amphibia-dendrobatidae-endemic-species-from-eastern-panama-and-type%C3%A2-species-of-i-colostethus-i-with-a-molecular-assessment-of-similar-sympatric-species
#20
Roberto D Ibáñez, Edgardo J Griffith, Karen R Lips, Andrew J Crawford
We conducted a molecular assessment of Colostethus-like frogs along an elevational gradient in the Serranía de Pirre, above Santa Cruz de Cana, eastern Panama, aiming to establish their species identity and to determine the altitudinal distribution of C. latinasus. Our findings confirm the view of C. latinasus as an endemic species restricted to the highlands of this mountain range, i.e., 1350-1475 m.a.s.l., considered to be type locality of this species. We described the advertisement call of C. latinasus that consists of a series of 4-18 single, short and relatively loud "peep"-like notes given in rapid succession, and its spectral and temporal features were compared with calls of congeneric species...
April 12, 2017: Zootaxa
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