Digital Commons Network^™

Diving At High Altitude: O2 Transport And Utilization In The Ruddy Duck And Torrent Duck In The Andes, Kevin G. Mccracken, Graham R. Scott, Luis Alza, Andrea Astie, Ciska Bakkeren, Emil Bautista, Mariana Bulgarella, Rebecca Cheek G. Cheek, Beverly A. Chua, Neal J. Dawson, Alexis Diaz, Catherine M. Ivy, Peter B. Frappell, Cecilia Kopuchian, Sabine L. Laguë, John N. Maina, Violeta Muñoz-Fuentes, Elizabeth R. Schell, Matthew M. Smith, Ryan J. Sprenger, Pablo L. Tubaro, Elizabeth R. Schell, Matthew M. Smith, Ryan J. Sprenger, Pablo L. Tubaro, Thomas Valqui, Roy E. Weber, Daniela Wilner, Robert E. Wilson, Julia M. York, William K. Milsom

Occasional Papers of the Museum of Natural Science, Louisiana State University

Hypoxia and cold temperatures create unique physiological challenges for high-altitude organisms that can vary depending on lifestyle. While nearly all studies of air-breathing animals at high altitude are from terrestrial species, species that breath-hold dive underwater at high altitude encounter a very different set of selective pressures influencing their phenotype. The goal of this publication is to highlight the changes in O2 transport and utilization in high-altitude diving birds relative to divers at sea level, and the extent to which these changes are qualitatively distinct from phenotypic changes in non-diving species at high altitude. For example, while high capacities for …

Sand, Science, And The Civil War: Sedimentary Geology And Combat, Erin Stewart Mauldin

Civil War Book Review

Scott Hippensteel’s Sand, Science, and the Civil War fills

a critical gap in several different literatures on America’s Civil War. Across 20 brief chapters, Hippensteel demonstrates how sedimentary geology affected military operations on a range of scales, from the continental creation of mountains that acted as offensive obstacles to the weathering of sand into an effective force multiplier for coastal fortifications. Hippensteel is not a historian by training—he is an associate professor of earth sciences—and perhaps for that reason, Sand, Science, and the Civil War does not follow the expected structure or chronology of a typical history monograph. Nevertheless, Hippensteel’s …

Interculturality, Creolization, And Globalization In "Ángeles Nómadas" By Minelys Sánchez, Cecily Bernard

Comparative Woman

No abstract provided.

A Pharmacological Approach To Investigating Effector Translocation In Rice-Magnaporthe Oryzae Interactions, Ely Oliveira-Garcia, Allison Jane Hamilton

Faculty Publications

Fungal pathogens deliver effector proteins into living plant cells to suppress plant immunity and control plant processes that are needed for infection. During plant infection, the devastating rice blast fungus, Magnaporthe oryzae, forms the specialized biotrophic interfacial complex (BIC), which is essential for effector translocation. Cytoplasmic effectors are first focally secreted into BICs, and subsequently packaged into dynamic membranous effector compartments (MECs), then translocated via clathrin-mediated endocytosis (CME) into the host cytoplasm. This study demonstrates that clathrin-heavy chain inhibitors endosidin-9 (ES9) and endosidin-9–17 (ES9–17) blocked the internalization of the fluorescently labeled effectors Bas1 and Pwl2 in rice cells, leading to …

Biology, Ecology, And Management Of Redbanded Stink Bug (Hemiptera: Pentatomidae), Olabimpe O. Okosun, Justin George, Maribel Portilla, James P. Glover, Katherine A. Parys, Gadi V.P. Reddy

Faculty Publications

The redbanded stink bug (RBSB), Piezodorus guildinii (Westwood) (Hemiptera: Pentatomidae) is an invasive stink bug species and a polyphagous pest of cultivated crops and non-cultivated wild plants. The increase in soybean cultivation during the 1960s-1970s led to the spread of RBSB as an economic pest of soybean throughout South America, especially in Brazil, Argentina, and Uruguay. In the early 2000s, RBSB became an economic concern to US agriculture and is currently a key species in a stink bug complex that damages soybean in many mid-southern states. RBSB causes extensive damage to soybeans and other economically important leguminous crops by feeding …

Transgenic Sugarcane Expressing Bacillus Thuringiensis Cry1ac Protein Offers New Possibilities For Controlling The Giant Borer, Telchin Licus (Drury), A Pest Difficult To Control, Caroline Izabel R. Sakuno, Fabricio José B. Francischini, Karen Missy A. Komada, Murilo Basso, Fangneng Huang

Faculty Publications

The giant borer, Telchin licus (Drury), is an important insect pest of sugarcane in Central and South America. This pest is difficult to control with chemical or biological control approaches due to the larvae behavior of hiding in the deepest parts of the plants. Manual scavenging and skewer killing have been the main approaches for monitoring and control of T. licus in Brazil, the world's largest sugarcane producer. Recently, Brazil launched the first commercial use of transgenic sugarcane expressing Bacillus thuringiensis (Bt) proteins to control the sugarcane borer, Diatraea saccharalis (F.), a primary insect pest of sugarcane in the Americas. …

Multinational Prediction Of Soil Organic Carbon And Texture Via Proximal Sensors, Marcelo Mancini, Renata Andrade, Sérgio Henrique Godinho Silva, Rogério Borguete Alves Rafael, Swagata Mukhopadhyay, Bin Li, Somsubhra Chakraborty, Luiz Roberto Guimarães Guilherme, Autumn Acree, David C. Weindorf, Nilton Curi

Faculty Publications

Novel technologies help to monitor the environmental impact of human activities, but tests involving datasets from several countries, encompassing a large variability of soil properties, are still scarce. This study utilized proximal sensors to predict soil organic carbon (OC) and soil texture of samples from Brazil, France, India, Mozambique, and United States. A total of 1749 samples were analyzed by portable X-ray fluorescence (pXRF) spectrometry and visible near-infrared diffuse reflectance spectroscopy. Sand (R2 = 0.89), silt (0.87), and clay (0.84) predictions were very accurate, despite contrasting climates, soil parent materials, and weathering degrees. Soil OC predictions were similarly successful (0.74) …

The Lavatory Lens: Tracking The Global Movement Of Pathogens Via Aircraft Wastewater, Aaron Bivins, Robert Morfino, Andrew Franklin, Stuart Simpson, Warish Ahmed

Faculty Publications

Modern commercial air travel connects disparate human populations. The global airline industry transported as many as 4.5 billion passengers annually in the years leading up to the COVID-19 pandemic. While such connections are convenient for commerce and tourism, air travel networks can also be efficient distributors of infectious diseases. During the COVID-19 pandemic, public health agencies used multi-layered control strategies to manage the risk of COVID-19 transmission associated with air travel. Simultaneously, the surveillance of aircraft wastewater was further developed as a promising new method to screen for COVID-19, including newly emerging lineages, among international travelers. Herein, we review the …

Transcriptomic Changes In Glomeruli In Response To A High Salt Challenge In The Dahl Ss Rat, Marharyta Semenikhina, Daria V. Lysikova, Denisha R. Spires, Mark Domondon, Krisztian Stadler, Oleg Palygin, Daria V. Ilatovskaya

Division of Basic Science Faculty Publications

Salt sensitivity impacts a significant portion of the population and is an important contributor to the development of chronic kidneydisease. One of the significant early predictors of salt-induced damage is albuminuria, which reflects the deterioration of the renal filtration barrier: the glomerulus. Despite significant research efforts, there is still a gap in knowledge regarding the molecularme chanisms and signaling networks contributing to instigating and/or perpetuating salt-induced glomerular injury. To address this gap, we used 8-wk-old male Dahl salt-sensitive rats fed a normal-salt diet (0.4% NaCl) or challenged with a high-salt diet (4%NaCl) for 3 wk. At the end of the …

Renal Epithelial Mitochondria: Implications For Hypertensive Kidney Disease, Krisztian Stadler, Daria V. Ilatovskaya

Division of Basic Science Faculty Publications

According to the Centers for Disease Control and Prevention, 1 in 2 U.S. adults have hypertension, and more than 1 in 7 chronic kidney disease. In fact, hypertension is the second leading cause of kidney failure in the United States; it is a complex disease characterized by, leading to, and caused by renal dysfunction. It is well-established that hypertensive renal damage is accompanied by mitochondrial damage and oxidative stress, which are differentially regulated and manifested along the nephron due to the diverse structure and functions of renal cells. This article provides a summary of the relevant knowledge of mitochondrial bioenergetics …

Editorial: How Rsv Outsmarts The Host, Stephania A. Cormier, Lawrence M. Kauvar, Ralph A. Tripp

Division of Basic Science Faculty Publications

No abstract provided.

Predicting Severe Covid-19 Using Readily Available Admission Indicators: Spo2/Fio2 Ratio, Comorbidity Index, And Gender, Luan D. Vu, Rebecca C. Christofferson, Hollis R. O’Neal, Diana Hamer, Anh T.Q. Phan, Katie M. Vance, E. A. Turner, Avinash Kumar, Ibrahim Musa Yola, Natalie Lim, Beverly Ogden, Stephania A. Cormier

Division of Basic Science Faculty Publications

The focus of this study was to identify risk factors for severe and critical COVID-19, evaluate local respiratory immune responses to SARS-CoV-2 infection, and develop a prognostic tool for COVID-19 severity using accessible early indicators. Using nasopharyngeal swab samples from hospitalized patients with COVID-19 of varying severity during the first wave of the pandemic from March to May 2020 in Louisiana, we evaluated the association between COVID-19 severity and viral load, respiratory immune mediators, and demographic/clinical factors. We found that the SpO2/FiO2 ratio at triage, total comorbidity burden (represented by Charlson Comorbidity Index), and gender were significantly associated with COVID-19 …

Covid-19 As A Chronic Stressor And The Importance Of Individual Identity: A Data-Driven Look At Academic Productivity During The Pandemic, Breanna N. Harris, Carolyn M. Bauer, James A. Carr, Caitlin R. Gabor, Jennifer L. Grindstaff, Caleigh Guoynes, Jennifer J. Heppner, Cris C. Ledon-Rettig, Patricia C. Lopes, Sharon E. Lynn, Carla B. Madelaire, Lorin A. Neuman-Lee, Maria G. Palacios, Paul Soto, Jennifer Terry

Faculty Publications

The COVID-19 pandemic impacted personal and professional life. For academics, research, teaching, and service tasks were upended and we all had to navigate the altered landscape. However, some individuals faced a disproportionate burden, particularly academics with minoritized identities or those who were early career, were caregivers, or had intersecting identities. As comparative endocrinologists, we determine how aspects of individual and species-level variation influence response to, recovery from, and resilience in the face of stressors. Here, we flip that framework and apply an integrative biological lens to the impact of the COVID-19 chronic stressor on our endocrine community. We address how …

Dichotomous Transactivation Domains Contribute To Growth Inhibitory And Promotion Functions Of Tap73, Dan Li, Catherine Yen Li Kok, Chao Wang, Debleena Ray, Susanne Osterburg, Volker Dötsch, Sujoy Ghosh, Kanaga Sabapathy

Division of Basic Science Faculty Publications

The transcription factor p73, a member of the p53 tumor-suppressor family, regulates cell death and also supports tumorigenesis, although the mechanistic basis for the dichotomous functions is poorly understood. We report here the identification of an alternate transactivation domain (TAD) located at the extreme carboxyl (C) terminus of TAp73β, a commonly expressed p73 isoform. Mutational disruption of this TAD significantly reduced TAp73β’s transactivation activity, to a level observed when the amino (N)-TAD that is similar to p53’s TAD, is mutated. Mutation of both TADs almost completely abolished TAp73β’s transactivation activity. Expression profiling highlighted a unique set of targets involved in …

Male Mouse Skeletal Muscle Lacking Hur Shows Enhanced Glucose Disposal At A Young Age, Robert C. Noland, Sujoy Ghosh, Carlos J. Crisanto, Antonio Aleman, Mckenna K. Chaney, Maitri K. Chauhan, Layla G. Loftis, Ally C. Goad, Christin F. Rickman, Samuel E. Velasquez, Jaycob D. Warfel

Division of Basic Science Faculty Publications

Introduction: Metabolic flexibility is the ability of a system to switch between metabolic substrates. Human and murine skeletal muscle tissues and cells with decreased activity of the regulatory RNA-binding protein, human antigen R (HuR), have decreased capacity for fat oxidation, and thus decreased metabolic flexibility. In this study, we aimed to assess the preference for carbohydrates in mice lacking HuR in skeletal muscle. Methods: Experiments were performed on weight-matched control and HuR knockout mice of both sexes. Palmitate and pyruvate oxidation were performed in mouse muscle following the release of 14CO2. In vivo glucose and lipid uptake were assayed in …

Use Of Cryopreserved Sperm Of Grass Carp (Ctenopharyngodon Idella) For Seed Production At The Hatchery Level Of Bangladesh—A Need For Development Of Germplasm Repositories, Shajjad Hossian, Md Faijan Reza, Mohammad Matiur Rahman, Mariom, Mohammed Jahangir Alam, Md Abdur Razzak, Md Fazlul Awal Mollah, Terrence R. Tiersch, Md Rafiqul Islam Sarder

Faculty Publications

Grass carp (Ctenopharyngodon idella), a freshwater nonnative fish species, is a potential aquaculture candidate in Bangladesh. The seed of the species is produced in the hatcheries by hypophysation, but the quality of seedstock of grass carp is deteriorated due to inbreeding, negative selection, and interspecific introgression among fishes. To increase the availability of quality seed and best genetic traits of grass carp, this study dealt with finding suitable conditions of sperm cryopreservation protocols and evaluated the effectiveness of cryopreserved sperm through breeding trials of C. idella. A broodstock population was developed from fingerlings imported from China by the Bangladesh Department …

Investigating The Efficacy Of Natural And Nature-Based Features To Increase The Service Life Of Coastal Roadways, Navid Jafari, Mohammad O. Hassan

Data

Wetlands serve as essential natural barriers, protecting coastal regions against the increasing threats from hurricane-induced storm surges, rising sea levels, and changing weather patterns. Understanding their structural resilience is crucial, particularly the shear strength of the wetland soil-root matrix, which contributes significantly to stability under extreme weather events. However, evaluating this shear strength is challenging due to the complex nature of root systems and the varying amounts of live biomass and necromass at different soil depths. This study utilized a Large-scale Direct Shear Apparatus (LDSA) to address this gap by assessing the shear strength of root biomass in a horizontal …

Investigating The Efficacy Of Natural And Nature-Based Features To Increase The Service Life Of Coastal Roadways, Navid Jafari, Mohammad O. Hassan

Publications

Wetlands serve as essential natural barriers, protecting coastal regions against the increasing threats from hurricane-induced storm surges, rising sea levels, and changing weather patterns. Understanding their structural resilience is crucial, particularly the shear strength of the wetland soil-root matrix, which contributes significantly to stability under extreme weather events. However, evaluating this shear strength is challenging due to the complex nature of root systems and the varying amounts of live biomass and necromass at different soil depths. This study utilized a Large-scale Direct Shear Apparatus (LDSA) to address this gap by assessing the shear strength of root biomass in a horizontal …

Are We Adequately Training Our Healthcare Providers Facing The Pandemic Of Obesity?, Eric Ravussin

Clinical Research Faculty Publications

No abstract provided.

Combining Uncertainty-Aware Predictive Modeling And A Bedtime Smart Snack Intervention To Prevent Nocturnal Hypoglycemia In People With Type 1 Diabetes On Multiple Daily Injections, Clara Mosquera-Lopez, Valentina Roquemen-Echeverri, Nichole S. Tyler, Susana R. Patton, Mark A. Clements, Corby K. Martin, Michael C. Riddell, Robin L. Gal, Melanie Gillingham, Leah M. Wilson, Jessica R. Castle, Peter G. Jacobs

Clinical Research Faculty Publications

Objective: Nocturnal hypoglycemia is a known challenge for people with type 1 diabetes, especially for physically active individuals or those on multiple daily injections. We developed an evidential neural network (ENN) to predict at bedtime the probability and timing of nocturnal hypoglycemia (0-4 vs 4-8 h after bedtime) based on several glucose metrics and physical activity patterns. We utilized these predictions in silico to prescribe bedtime carbohydrates with a Smart Snack intervention specific to the predicted minimum nocturnal glucose and timing of nocturnal hypoglycemia. Materials and methods: We leveraged free-living datasets collected from 366 individuals from the T1DEXI Study and …

Effects Of Aerobic And Resistance Exercise For 9 Months On Serum Free Light Chains In Type 2 Diabetes, Youyoung Kim, John P. Campbell, Neil M. Johannsen, Timothy S. Church, Eunhan Cho, Jennifer Heaney, Guillaume Spielmann

Clinical Research Faculty Publications

Background and aims: Serum polyclonal free light chains (FLCs) levels are associated with overall survival in the general population, reflecting their utility as a biomarker of underlying immune activation and inflammation. Regular exercise is known to ameliorate low-grade inflammation in chronic diseases such as type 2 diabetes; however, the effects of different exercise training modalities on FLCs in adults with type 2 diabetes is unknown. This study investigated the effects of 9-month of aerobic, resistance or combined supervised exercise on serum FLCs in 164 patients with type 2 diabetes (age 58 ± 8 years; 63% female). Methods: 164 participants from …

Impact Of Reduced Rates Of Tiafenacil At Vegetative Growth Stages On Rice Growth And Yield, Donnie K. Miller, Jason A. Bond, Thomas R. Butts, L. Connor Webster, Koffi Badou Jeremie Kouame

Faculty Publications

Tiafenacil is a new non-selective protoporphyrinogen IX oxidase (PPO)-inhibiting herbicide with both grass and broadleaf activity labeled for preplant application to corn, cotton, soybean, and wheat. Early season rice emergence and growth often coincide in the mid-southern U.S. with preplant herbicide application in cotton and soybean, thereby increasing the opportunity for off-target herbicide movement from adjacent fields. Field studies were conducted to identify any deleterious impacts of reduced rates of tiafenacil (12.5 to 0.4% of the lowest labeled application rate of 24.64 g ai ha-1) applied to 1- or 3-leaf (lf) rice. Visual injury 1 week after treatment (WAT) for …

Early Season Weed Management Options In Water-Seeded Rice Production, L. Connor Webster, Samer Y. Rustom, Eric P. Webster, Ben Stoker

Faculty Publications

Two separate field studies were conducted at two locations at the LSU Agricultural Center H. Rouse Caffey Rice Research Station (RRS) near Crowley, LA to evaluate early season applications of florpyrauxifen and a prepackaged mixture of halosulfuron plus prosulfuron in water-seeded rice production. In each study, florpyrauxifen and halosulfuron plus prosulfuron were applied at two rates and either applied to the soil surface 48 hours before the seeding flooding and seeding (SURFACE), directly onto the pregerminated seed 24 hours following seeding and immediately after removal of the seeding flood (SEED), and at pegging (PEG). Data suggests that both florpyrauxifen and …

Impact Of Reduced Rates Of Tiafenacil On Early-Season Cotton (Gossypium Hirsutum L.) Growth And Yield, Donnie K. Miller, L. Tom Barber, Jason A. Bond, Lawrence E. Steckel, Daniel O. Stephenson, Matthew R. Foster, Thomas R. Butts, Koffi Badou Jeremie Kouame

Faculty Publications

Tiafenacil is a new nonselective protoporphyrinogen IX oxidase-inhibiting herbicide with both grass and broadleaf activity labeled for preplant application to corn, cotton, soybean, and wheat. Early-season cotton emergence and growth often coincides in the Mid-South with preplant herbicide application in later planted cotton and soybean, thereby increasing opportunity for off-target herbicide movement from adjacent fields. Field studies were conducted in 2022 to identify any deleterious impacts of reduced rates of tiafenacil (12.5 – 0.4% of the lowest labeled application rate of 24.64 g ai ha-1) applied to oneto two-leaf cotton. Visual injury one week after treatment (WAT) with 1/8, 1/16, …

Comparison Of The Morpho-Physiological And Molecular Responses To Salinity And Alkalinity Stresses In Rice, Abdelghany S. Shaban, Fatmah Ahmed Safhi, Marwa A. Fakhr, Rajat Pruthi, Mahmoud S. Abozahra, Amira M. El-Tahan, Prasanta K. Subudhi

Faculty Publications

Rice is a major food crop that has a critical role in ensuring food security for the global population. However, major abiotic stresses such as salinity and alkalinity pose a major threat to rice farming worldwide. Compared with salinity stress, there is limited progress in elucidating the molecular mechanisms associated with alkalinity tolerance in rice. Since both stresses coexist in coastal and arid regions, unraveling of the underlying molecular mechanisms will help the breeding of high-yielding stress-tolerant rice varieties for these areas. This study examined the morpho-physiological and molecular response of four rice genotypes to both salinity and alkalinity stresses. …

Impact Report, 2023-2024, Lsu Libraries

Libraries Impact Reports

No abstract provided.

Editorial: Structure And Function Of Trans-Membrane Proteins, Irena Roterman, Michal Brylinski, Fabio Polticelli, Alexandre G. De Brevern

Faculty Publications

No abstract provided.

Isolation Of Murine Adipose-Derived Stromal/Stem Cells For Adipogenic And Osteogenic Differentiation Or Flow Cytometry-Based Analysis, Matthew C. Scott, Chul Hong Park, Marilyn Dietrich, Xiying Wu, Jeffrey M. Gimble, Carrie M. Elks, Ji Suk Chang, Z. Elizabeth Floyd

Division of Basic Science Faculty Publications

Murine models of obesity or reduced adiposity are a valuable resource for understanding the role of adipocyte dysfunction in metabolic disorders. Adipose tissue stromal vascular cells or primary adipocytes derived from murine adipose tissue and grown in culture are essential tools for studying the mechanisms underlying adipocyte development and function. Herein, we describe methods for the isolation, expansion, and long-term storage of murine adipose-derived stromal/stem cells, along with protocols for inducing adipogenesis to white or beige adipocytes in this cell population and osteogenic differentiation. Isolation of the adipose stromal vascular fraction cells for flow cytometric analysis is also described.

Updates In Air Pollution: Current Research And Future Challenges, Dwan Vilcins, Rebecca C. Christofferson, Jin Ho Yoon, Siti Nurshahida Nazli, Peter D. Sly, Stephania A. Cormier, Guofeng Shen

Division of Basic Science Faculty Publications

Background: The United Nations has declared that humans have a right to clean air. Despite this, many deaths and disability-adjusted life years are attributed to air pollution exposure each year. We face both challenges to air quality and opportunities to improve, but several areas need to be addressed with urgency. Objective: This paper summarises the recent research presented at the Pacific Basin Consortium for Environment and Health Symposium and focuses on three key areas of air pollution that are important to human health and require more research. Findings and conclusion: Indoor spaces are commonly places of exposure to poor air …

Antioxidant Activity, Structural And Physical Properties Of Soy-Based Textured Vegetable Protein With Added Cannabis Leaves As Affected By Extrusion Process, Kamolwan Jangchud, Hataichanok Kantrong, Benjarat Tepsongkroh, Anuvat Jangchud, Khanchat Sangchum, Witoon Prinyawiwatkul

Faculty Publications

The effects of cannabis leaf powder substituted for defatted soy flour (CP; 0%, 5%, 10% and 15%) and the moisture content of the mixture (MC; 25%, 35% and 45% on a wet basis) on physical properties and antioxidant activities of textured vegetable protein (TVP) prepared using a twin-screw extruder were studied. Increasing CP and MC decreased expansion, resulting in small air cells within the structure, which, in turn, led to an increased bulk density and decreased water absorption capacity, water holding capacity and water solubility index. After rehydration, TVP with the higher CP and MC levels tended to exhibit higher …