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Full-Text Articles in Life Sciences

Radical Botany: Plants And Speculative Fiction [Table Of Contents], Natania Meeker, Antónia Szabari Dec 2019

Radical Botany: Plants And Speculative Fiction [Table Of Contents], Natania Meeker, Antónia Szabari

Literature

No abstract provided.


Polyhistidine Facilitates Direct Membrane Translocation Of Cell-Penetrating Peptides Into Cells, Han-Jung Lee, Yue-Wern Huang, Shiow-Her Chiou, Robert Aronstam Dec 2019

Polyhistidine Facilitates Direct Membrane Translocation Of Cell-Penetrating Peptides Into Cells, Han-Jung Lee, Yue-Wern Huang, Shiow-Her Chiou, Robert Aronstam

Biological Sciences Faculty Research & Creative Works

The bovine lactoferricin L6 (RRWQWR) has been previously identified as a novel cell-penetrating peptide (CPP) that is able to efficiently internalize into human cells. L6 interacts with quantum dots (QDs) noncovalently to generate stable L6/QD complexes that enter cells by endocytosis. In this study, we demonstrate a modified L6 (HL6; CHHHHHRRWQWRHHHHHC), in which short polyhistidine peptides are introduced into both flanks of L6, has enhanced cell-penetrating ability in human bronchoalveolar carcinoma A549 cells. The mechanism of cellular uptake of HL6/QD complexes is primarily direct membrane translocation rather than endocytosis. Dimethyl sulfoxide (DMSO), but not pyrenebutyrate (PB), ethanol, oleic ...


Growth Differentiation Factor 11 Locally Controls Anterior-Posterior Patterning Of The Axial Skeleton., Joonho Suh, Je-Hyun Eom, Na-Kyung Kim, Kyung Mi Woo, Jeong-Hwa Baek, Hyun-Mo Ryoo, Se-Jin Lee, Yun-Sil Lee Dec 2019

Growth Differentiation Factor 11 Locally Controls Anterior-Posterior Patterning Of The Axial Skeleton., Joonho Suh, Je-Hyun Eom, Na-Kyung Kim, Kyung Mi Woo, Jeong-Hwa Baek, Hyun-Mo Ryoo, Se-Jin Lee, Yun-Sil Lee

Faculty Research 2019

Growth and differentiation factor 11 (GDF11) is a transforming growth factor β family member that has been identified as the central player of anterior-posterior (A-P) axial skeletal patterning. Mice homozygous for Gdf11 deletion exhibit severe anterior homeotic transformations of the vertebrae and craniofacial defects. During early embryogenesis, Gdf11 is expressed predominantly in the primitive streak and tail bud regions, where new mesodermal cells arise. On the basis of this expression pattern of Gdf11 and the phenotype of Gdf11 mutant mice, it has been suggested that GDF11 acts to specify positional identity along the A-P axis either by local changes in ...


Science-Based Intensive Agriculture: Sustainability, Food Security, And The Role Of Technology, Jim Gaffney, James Bing, Patrick F. Byrne, Kenneth G. Cassman, Ignacio Ciampitti, Deborah Delmer, Jeffrey Habben, H. Renee Lafitte, Ulrika E. Lidstrom, Dana O. Porter, John E. Sawyer, Jeff Schussler, Tim Setter, Robert E. Sharp, Tony J. Vyn, David Warner Dec 2019

Science-Based Intensive Agriculture: Sustainability, Food Security, And The Role Of Technology, Jim Gaffney, James Bing, Patrick F. Byrne, Kenneth G. Cassman, Ignacio Ciampitti, Deborah Delmer, Jeffrey Habben, H. Renee Lafitte, Ulrika E. Lidstrom, Dana O. Porter, John E. Sawyer, Jeff Schussler, Tim Setter, Robert E. Sharp, Tony J. Vyn, David Warner

Agronomy Publications

Sustainable agriculture describes crop management approaches that address the interdependent goals of increasing or at least maintaining yield while protecting the environment, conserving natural resources, and slowing climate change. Numerous authors have espoused limiting synthetic fertilizer and pesticides and promoting organic agriculture (Lechenet et al., 2014; Martinez-Alcantara et al., 2016; Muller at al. 2017), less meat consumption (West et al., 2014; Poore and Nemecek, 2018; Springmann et al., 2018), or combinations of these strategies as viable solutions to achieve those goals, thereby improving agricultural sustainability.


Viscoelastic Properties Of Shock Wave Exposed Brain Tissue Subjected To Unconfined Compression Experiments, Annastacia K. Mccarty, Ling Zhang, Sarah Hansen, William J. Jackson, Sarah A. Bentil Dec 2019

Viscoelastic Properties Of Shock Wave Exposed Brain Tissue Subjected To Unconfined Compression Experiments, Annastacia K. Mccarty, Ling Zhang, Sarah Hansen, William J. Jackson, Sarah A. Bentil

Mechanical Engineering Publications

Traumatic brain injuries (TBI) affect millions of people each year. While research has been dedicated to determining the mechanical properties of the uninjured brain, there has been a lack of investigation on the mechanical properties of the brain after experiencing a primary blast-induced TBI. In this paper, whole porcine brains were exposed to a shock wave to simulate blast-induced TBI. First, ten (10) brains were subjected to unconfined compression experiments immediately following shock wave exposure. In addition, 22 brains exposed to a shock wave were placed in saline solution and refrigerated between 30 minutes and 6.0 hours before undergoing ...


What Have Long-Term Field Studies Taught Us About Population Dynamics?, Beth A. Reinke, David A. W. Miller, Fredric J. Janzen Nov 2019

What Have Long-Term Field Studies Taught Us About Population Dynamics?, Beth A. Reinke, David A. W. Miller, Fredric J. Janzen

Ecology, Evolution and Organismal Biology Publications

Long-term studies have been crucial to the advancement of population biology, especially our understanding of population dynamics. We argue that this progress arises from three key characteristics of long-term research. First, long-term data are necessary to observe the heterogeneity that drives most population processes. Second, long-term studies often inherently lead to novel insights. Finally, long-term field studies can serve as model systems for population biology, allowing for theory and methods to be tested under well-characterized conditions. We illustrate these ideas in three long-term field systems that have made outsized contributions to our understanding of population ecology, evolution, and conservation biology ...


Phylogenetic Comparative Methods And The Evolution Of Multivariate Phenotypes, Dean C. Adams, Michael L. Collyer Nov 2019

Phylogenetic Comparative Methods And The Evolution Of Multivariate Phenotypes, Dean C. Adams, Michael L. Collyer

Ecology, Evolution and Organismal Biology Publications

Evolutionary biology is multivariate, and advances in phylogenetic comparative methods for multivariate phenotypes have surged to accommodate this fact. Evolutionary trends in multivariate phenotypes are derived from distances and directions between species in a multivariate phenotype space. For these patterns to be interpretable, phenotypes should be characterized by traits in commensurate units and scale. Visualizing such trends, as is achieved with phylomorphospaces, should continue to play a prominent role in macroevolutionary analyses. Evaluating phylogenetic generalized least squares (PGLS) models (e.g., phylogenetic analysis of variance and regression) is valuable, but using parametric procedures is limited to only a few phenotypic ...


Canavalia And Dolichos Extracts For Sustainable Pest Biocontrol And Plant Nutrition Improvement In El Salvador, Carlos Martinez Oct 2019

Canavalia And Dolichos Extracts For Sustainable Pest Biocontrol And Plant Nutrition Improvement In El Salvador, Carlos Martinez

Theses, Dissertations, and Student Research in Agronomy and Horticulture

Botanical repellents and pesticides are now being rediscovered as new tools for integrated pest management in order to reduce the use of toxic chemicals in crop production. Canavalia gladiata and Dolichos lablab are two Fabaceae very well adapted to farmlands of El Salvador, effective as living barriers and mostly as cover crops, however, they are not yet very well disseminated. This document describes the potential for using the liquid extracts and the dry flour of raw seeds of those plants for economic benefit and practical convenience for pest management in Salvadorian agriculture under field conditions. Seed extracts were useful when ...


Estimating Total And Bioavailable Nutrient Loading To Utah Lake From The Atmosphere, Janice Brahney Oct 2019

Estimating Total And Bioavailable Nutrient Loading To Utah Lake From The Atmosphere, Janice Brahney

Watershed Sciences Faculty Publications

Anthropogenic activities have led to increases in the emission, atmospheric transport, and deposition of key nutrients. In addition, climate change along with anthropogenic soil disturbance has led to recent increases in the mobilization and transport of soils and other particles through the atmosphere, collectively described here as dust. These increased emissions have led to growing interest and concern over the composition of atmospheric deposition and total loading of nutrients to aquatic systems. In the last several decades, much effort has been directed towards the measurement and modeling of nitrogen deposition through wet and aerosol deposition. Less is known about the ...


Molecular Phylogeny Implemented In An Introductory Plant Classification Course, Chao Cai, Jo Ann Banks Oct 2019

Molecular Phylogeny Implemented In An Introductory Plant Classification Course, Chao Cai, Jo Ann Banks

Libraries Faculty and Staff Presentations

Plant classification is one of the core components in undergraduate programs related to plant sciences. Traditionally plant classification courses primarily introduce morphology-based taxonomy because of practical needs in the field. However, the publication of new plant classification systems by Angiosperm Phylogeny Group (APG) using molecular phylogeny methods leads to the trends of using molecular evidence (DNA barcode) for plant identification. In our introductory plant classification course, we included a two-week module (lectures and labs) to introduce key concepts and fundamental skills in molecular phylogeny. Week 1 included concepts of evolutionary tree thinking, data mining in NCBI using BLAST search, and ...


Progress Report Ii: Fabrication Of Nanopores In Silicon Nitride Membrane Using Self-Assembly Of Ps-B-Pmma: Nanopore Pattern Transfer To The Si Substrate, Kodai Watanabe, Unnati Joshi, Hiromichi Yamamoto Oct 2019

Progress Report Ii: Fabrication Of Nanopores In Silicon Nitride Membrane Using Self-Assembly Of Ps-B-Pmma: Nanopore Pattern Transfer To The Si Substrate, Kodai Watanabe, Unnati Joshi, Hiromichi Yamamoto

Protocols and Reports

The asymmetric PS(46k)-b-PMMA(21k) film was spin-coated on a neutral brush layer grafted onto a Spin-On-Glass (SOG) layer on the aluminum oxide layer on a Si substrate. An aluminum oxide layer was used as a hard mask. The PS-b-PMMA film was annealed at 190 degree C under vacuum for 3 days, so that the ~20 nm diameter nanopores in the film was successfully prepared as a result of self-assembly. The nanopores in the PS-b-PMMA film were able to be transferred to the Si substrate by CF4 etching through the SOG and aluminum oxide layers, although the etching was ...


Inrsep/Cnrs Research Symposium Program, Inrsep/Cnrs Oct 2019

Inrsep/Cnrs Research Symposium Program, Inrsep/Cnrs

University Reports

The research symposium of Humboldt State University INRSEP/CNRS students took place on the 2nd floor of the university library on October 4, 2019, and included a 12-2pm poster session and 2-4pm oral presentations. This program includes abstracts from the posters and oral presentations.


A Belmont Report For Animals?, Hope Ferdowsian, L. Syd M. Johnson, Jane Johnson, Andrew Fenton, Adam Shriver, John Gluck Oct 2019

A Belmont Report For Animals?, Hope Ferdowsian, L. Syd M. Johnson, Jane Johnson, Andrew Fenton, Adam Shriver, John Gluck

Professional Science Research Ethics Collection

Human and animal research both operate within established standards. In the United States, criticism of the human research environment and recorded abuses of human research subjects served as the impetus for the establishment of the National Commission for the Protection of Human Subjects of Biomedical and Behavioral Research, and the resulting Belmont Report. The Belmont Report established key ethical principles to which human research should adhere: respect for autonomy, obligations to beneficence and justice, and special protections for vulnerable individuals and populations. While current guidelines appropriately aim to protect the individual interests of human participants in research, no similar, comprehensive ...


Capacity And Distribution Of Water Stored In The Vadose Zone Of The Chinese Loess Plateau, Yuanjun Zhu, Xiaoxu Jia, Jiangbo Qiao, Andrew Binley, Robert Horton, Wei Hu, Yunqiang Wang, Ming’An Shao Oct 2019

Capacity And Distribution Of Water Stored In The Vadose Zone Of The Chinese Loess Plateau, Yuanjun Zhu, Xiaoxu Jia, Jiangbo Qiao, Andrew Binley, Robert Horton, Wei Hu, Yunqiang Wang, Ming’An Shao

Agronomy Publications

Water stored in the vadose (unsaturated) zone provides the majority of water required by plants and buffers water resources; thus, it is central to understanding ecological and hydrological processes in the Chinese Loess Plateau (CLP) with its thick loess deposits. We used multisource data on soil water content (SWC) and vadose zone thickness, combined with a spatial interpolation method, to quantify the vadose zone water and further deduce the water resource composition in the CLP. Vadose zone water is approximately 3.1 × 1012 m3 (±27.5%) in the CLP, 92.4% of which is stored in the deep ...


Fall Frost Tolerances Photo Fact Sheet (2019), Carolyn J. Demoranville Oct 2019

Fall Frost Tolerances Photo Fact Sheet (2019), Carolyn J. Demoranville

Cranberry Station Fact Sheets

No abstract provided.


Forage News [2019-10], University Of Kentucky Department Of Plant And Soil Sciences Oct 2019

Odorous House Ants (Tapinoma Sessile), Ryan Davis, Austin Taylor Oct 2019

Odorous House Ants (Tapinoma Sessile), Ryan Davis, Austin Taylor

All Current Publications

This fact sheet describes odorous house ants (Tapinoma sessile), how to identify them, their biology, and management, including inspections, insecticide application to nests, perimeter barrier application, and baits.


Candidate Effectors From Uromyces Appendiculatus, The Causal Agent Of Rust On Common Bean, Can Be Discriminated Based On Suppression Of Immune Responses, Mingsheng Qi, Yu Mei, James P. Grayczyk, Luana M. Darben, Martin E. G. Rieker, Janina M. Seitz, Ralf T. Voegele, Steven A. Whitham, Tobias I. Link Oct 2019

Candidate Effectors From Uromyces Appendiculatus, The Causal Agent Of Rust On Common Bean, Can Be Discriminated Based On Suppression Of Immune Responses, Mingsheng Qi, Yu Mei, James P. Grayczyk, Luana M. Darben, Martin E. G. Rieker, Janina M. Seitz, Ralf T. Voegele, Steven A. Whitham, Tobias I. Link

Plant Pathology and Microbiology Publications

Rust fungi are devastating pathogens for several important crop plants. The biotrophic lifestyle of rust fungi requires that they influence their host plants to create a favorable environment for growth and reproduction. Rust fungi secrete a variety of effector proteins that manipulate host target proteins to alter plant metabolism and suppress defense responses. Because of the obligate biotrophic lifestyle of rust fungi, direct evidence for effector function is difficult to obtain, and so suites of experiments utilizing expression in heterologous systems are necessary. Here, we present results from a yeast cell death suppression assay and assays for suppression of PAMP-triggered ...


Downy Mildew Of Alfalfa, Claudia Nischwitz Oct 2019

Downy Mildew Of Alfalfa, Claudia Nischwitz

All Current Publications

This fact sheet describes downy mildew, an obligate parasite. It describes symptoms in alfalfa, the disease cycle and how to manage it.


Nutrition At The Crossroads: Food At The Intersection Of Environmental, Economic, And Social Sustainability, Kurt A. Rosentrater, Laetitia Palmade, Elif Kongar Oct 2019

Nutrition At The Crossroads: Food At The Intersection Of Environmental, Economic, And Social Sustainability, Kurt A. Rosentrater, Laetitia Palmade, Elif Kongar

Agricultural and Biosystems Engineering Publications

Societies around the world are at a critical juncture. As the planetary population grows, there are increasing demands for expanding available food, more nutritious and healthy foods, and contemporaneously the need for greater efficiencies and decreased impacts upon the environment.

The sustainability of food production systems is a complex issue that requires a global and multidisciplinary approach, combining not only agronomy, ecology, nutrition, epidemiology, processing, energy use, but also marketing and sociology. It is within this context that this special issue aims to illustrate, through review articles, case studies, as well as modeling and simulation studies, some means of understanding ...


The Physiology Of Social-Emotional Learning: Integrating Biomarkers Of Self-Regulation Into The Assessment And Implementation Of Programs, Martin E. Blank Oct 2019

The Physiology Of Social-Emotional Learning: Integrating Biomarkers Of Self-Regulation Into The Assessment And Implementation Of Programs, Martin E. Blank

Master of Applied Positive Psychology (MAPP) Capstone Projects

In the last two decades, formalized social-emotional learning (SEL) programs in schools have proliferated in response to a staggering increase in mental, social, and emotional challenges for youth. SEL programs differ in their theoretical foundations, though there are commonalities among them. Self-regulation (SR) surfaces as an important pillar. Researchers have relied mostly on self-reporting and teacher questionnaires to measure the effectiveness of these programs to improve SR and other aspects of youth well-being, without explicitly considering the physiological effects of these interventions on the biomarkers of youth. By addressing this gap, program researchers, developers, and educators can reach their stated ...


Microwave Solventless Synthesis Of Meso-Tetrakis (Pentafluorophenyl)Poprphyrin (Tppf20) And Tris(Pentafluorophenyl))Corrole [Chemistry], Sunaina Singh Oct 2019

Microwave Solventless Synthesis Of Meso-Tetrakis (Pentafluorophenyl)Poprphyrin (Tppf20) And Tris(Pentafluorophenyl))Corrole [Chemistry], Sunaina Singh

Open Educational Resources

Organic chemistry is a two-semester course (Organic Chemistry I, SCC 251 and Organic Chemistry II, SCC 252) required for majors in Biology. The SCC 251 course has been designated for the Integrative Learning Core Competency as well the Digital Communication Ability. This course emphasizes the synthesis, structure, reactivity, and mechanisms of reaction of organic compounds. Laboratory stresses various organic synthetic and analytic techniques (distillation, extraction, chromatography and spectroscopy).

This lab provided an opportunity for students to go deeper with the chemistry content by correlating to the concepts they learned in General Chemistry courses such as Valence shell electron pair repulsion ...


Titration Of A Newtown Creek Environmental Water Sample To Determine The Amount Of Chloride Ions [Chemistry], Kevin Mark Oct 2019

Titration Of A Newtown Creek Environmental Water Sample To Determine The Amount Of Chloride Ions [Chemistry], Kevin Mark

Open Educational Resources

Main Course Learning Objectives:

The General Chemistry 1 (SCC 201) course has multiple course learning objectives, which articulate key introductory chemistry concepts that all STEM students should possess. In particular, the Newtown Creek titration experiment aligns with SCC 201 learning objectives of:

  1. Demonstrate an appreciation of the role of chemistry in various aspects of life
  2. Perform basic laboratory skills such as the proper execution of titration techniques
  3. Describe and explain the fundamental chemistry concept of solution concentration
  4. Analyze and represent experimental data in tables and graphs, interpret experimental results and write laboratory reports

In the SCC 201 laboratory, students are ...


The Effect Of Calcium Alginate Entrapment On The Stability Of Novel Lipases From P. Reinekei And P. Brenneri, Priyanka Priyanka, Gemma K. Kinsella, Gary T. Henehan, Barry J. Ryan Oct 2019

The Effect Of Calcium Alginate Entrapment On The Stability Of Novel Lipases From P. Reinekei And P. Brenneri, Priyanka Priyanka, Gemma K. Kinsella, Gary T. Henehan, Barry J. Ryan

Articles

The high cost of soluble enzymes can limit their use for commercial and industrial purposes. Immobilization can enhance enzyme reusability, thereby reducing product isolation costs and overcoming this economic barrier. In the current study, two novel, purified lipases from Pseudomonas sp. (Pseudomonas reinekei and Pseudomonas brenneri) were entrapped in a calcium alginate matrix, with the aim of simultaneously enhancing enzyme reusability and stability. Following entrapment, the retained activity of the enzyme-alginate composite was verified by an enzymatic hydrolysis reaction of a p-nitrophenol palmitate substrate. The effect of the enzyme-alginate entrapment against various physiochemical parameters such as pH, temperature, metal ions ...


Scientific Considerations For Acidification Monitoring In The Us Mid-Atlantic Region, Ka Goldsmith, S Lau, Et Al, Eh Shadwick, Et Al Sep 2019

Scientific Considerations For Acidification Monitoring In The Us Mid-Atlantic Region, Ka Goldsmith, S Lau, Et Al, Eh Shadwick, Et Al

VIMS Articles

Coastal and ocean acidification has the potential to cause significant environmental and societal impacts. Monitoring carbonate chemistry parameters over spatial and temporal scales is challenging, especially with limited resources. A lack of monitoring data can lead to a limited understanding of real-world conditions. Without such data, robust experimental and model design is challenging, and the identification and understanding of episodic acidification events is nearly impossible. We present considerations for resource managers, academia, and industry professionals who are currently developing acidification monitoring programs in the Mid-Atlantic region. We highlight the following considerations for deliberation: 1) leverage existing infrastructure to include multiple ...


A Mutation In Mouse Krüppel-Like Factor 15 Alters The Gut Microbiome And Response To Obesogenic Diet., Karen L. Svenson, Lauren L Long, Steven L. Ciciotte, Mark D Adams Sep 2019

A Mutation In Mouse Krüppel-Like Factor 15 Alters The Gut Microbiome And Response To Obesogenic Diet., Karen L. Svenson, Lauren L Long, Steven L. Ciciotte, Mark D Adams

Faculty Research 2019

We identified a mouse strain, HLB444, carrying an N-ethyl-N-nitrosourea (ENU)-induced mutation in a highly conserved C2H2 zinc-finger DNA binding motif of the transcriptional regulator KLF15 that exhibits resistance to diet-induced obesity. Characterization of the HLB444 mutant model on high-fat and chow diets revealed a number of phenotypic differences compared to wild-type controls. When fed a high fat diet, HLB444 had lower body fat, resistance to hepatosteatosis, lower circulating glucose and improved insulin sensitivity compared to C57BL/6J controls. Gut microbial profiles in HLB444 generated from 16S rRNA sequencing of fecal samples differed from controls under both chow and high ...


High-Fat Diet Fuels Prostate Cancer Progression By Rewiring The Metabolome And Amplifying The Myc Program., David P. Labbé, Giorgia Zadra, Meng Yang, Jaime M Reyes, Charles Y Lin, Stefano Cacciatore, Ericka M. Ebot, Amanda L. Creech, Francesca Giunchi, Michelangelo Fiorentino, Habiba Elfandy, Sudeepa Syamala, Edward D. Karoly, Mohammed Alshalalfa, Nicholas Erho, Ashley Ross, Edward M. Schaeffer, Ewan A. Gibb, Mandeep Takhar, Robert B. Den, Jonathan Lehrer, R. Jeffrey Karnes, Stephen J. Freedland, Elai Davicioni, Daniel E. Spratt, Leigh Ellis, Jacob D. Jaffe, Anthony V. DʼAmico, Philip W. Kantoff, James E. Bradner, Lorelei A. Mucci, Jorge E. Chavarro, Massimo Loda, Myles Brown Sep 2019

High-Fat Diet Fuels Prostate Cancer Progression By Rewiring The Metabolome And Amplifying The Myc Program., David P. Labbé, Giorgia Zadra, Meng Yang, Jaime M Reyes, Charles Y Lin, Stefano Cacciatore, Ericka M. Ebot, Amanda L. Creech, Francesca Giunchi, Michelangelo Fiorentino, Habiba Elfandy, Sudeepa Syamala, Edward D. Karoly, Mohammed Alshalalfa, Nicholas Erho, Ashley Ross, Edward M. Schaeffer, Ewan A. Gibb, Mandeep Takhar, Robert B. Den, Jonathan Lehrer, R. Jeffrey Karnes, Stephen J. Freedland, Elai Davicioni, Daniel E. Spratt, Leigh Ellis, Jacob D. Jaffe, Anthony V. DʼAmico, Philip W. Kantoff, James E. Bradner, Lorelei A. Mucci, Jorge E. Chavarro, Massimo Loda, Myles Brown

Department of Radiation Oncology Faculty Papers

Systemic metabolic alterations associated with increased consumption of saturated fat and obesity are linked with increased risk of prostate cancer progression and mortality, but the molecular underpinnings of this association are poorly understood. Here, we demonstrate in a murine prostate cancer model, that high-fat diet (HFD) enhances the MYC transcriptional program through metabolic alterations that favour histone H4K20 hypomethylation at the promoter regions of MYC regulated genes, leading to increased cellular proliferation and tumour burden. Saturated fat intake (SFI) is also associated with an enhanced MYC transcriptional signature in prostate cancer patients. The SFI-induced MYC signature independently predicts prostate cancer ...


Ontogenesis Of The Sella Turcica Among Egyptians: Forensic And Radiological Study, Wafaa Mohamed El-Sehly, Fatma Mohamed Magdy Badr El Dine, Mohamed Samir Shaban Sep 2019

Ontogenesis Of The Sella Turcica Among Egyptians: Forensic And Radiological Study, Wafaa Mohamed El-Sehly, Fatma Mohamed Magdy Badr El Dine, Mohamed Samir Shaban

Human Biology Open Access Pre-Prints

Introduction: The sella turcica has gained importance as a stable bony landmark in cephalometric studies.
Aim of the work: The aim of the work was to explore the changes that accompany postnatal ontogeny of the sella turcica until full development, and to verify its contribution in age estimation and sexual assignment among Egyptians.
Subjects and methods: Six selected measurements of the sella turcica of 215 Egyptian patients were assessed using Multidetector Computed Tomography (MDCT). The patients represented different ages and were referred to the Radiodiagnosis and Intervention Department. The gathered data were then subjected to statistical analysis including correlation and ...


Genetic Overview Of The Maya Populations: Mitochondrial Dna Haplogroups, Angélica González-Oliver, Dircé Pineda-Vázquez, Ernesto Garfias-Morales, Isabel De La Cruz-Laina, Luis Medrano-González, Lourdes Márquez-Morfín, Allan Ortega-Muñoz Sep 2019

Genetic Overview Of The Maya Populations: Mitochondrial Dna Haplogroups, Angélica González-Oliver, Dircé Pineda-Vázquez, Ernesto Garfias-Morales, Isabel De La Cruz-Laina, Luis Medrano-González, Lourdes Márquez-Morfín, Allan Ortega-Muñoz

Human Biology Open Access Pre-Prints

We identified the mitochondrial DNA haplogroups A, B, C and D in 75 present-day Maya individuals, 24 Maya individuals of the colonial period and one pre-Columbian Maya individual from Quintana Roo, Mexico. We examined these data together with those of 21 Maya populations accounting for 647 present-day Maya individuals and 104 ancient Maya individuals. A demographic study based on the analysis of fertility and endogamy was carried out in two modern Maya populations to identify cultural factors that influence the mitochondrial haplogroup genetic diversity. Most present-day and ancient Maya populations show a distribution pattern of mitochondrial haplogroup frequencies A, C ...


Genetic Variants Of Duffy And Hemoglobin S Genes In An Afrodescendent Population From Columbia, Diana C. Ortega, Heiber Cardenas, Guillermo Barreto Sep 2019

Genetic Variants Of Duffy And Hemoglobin S Genes In An Afrodescendent Population From Columbia, Diana C. Ortega, Heiber Cardenas, Guillermo Barreto

Human Biology Open Access Pre-Prints

Malaria is an endemic disease in a large part of Colombia, and the city of Buenaventura reports one of the highest malaria infection rates. Some genetic variants confer resistance to malaria, such as the heterozygote for hemoglobin S (HbS) and the homozygous variant FYBES/FYBES of the Duffy gene. The aim of this work was the molecular characterization of these genes in an afrodescendent population from the urban area of Buenaventura. A total of 819 individuals from a stratified random sampling in each of the 12 communities of this city were analysed. Molecular analysis was performed using PCR-RFLP ...