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Altered Gene Expression And Spongiotrophoblast Differentiation In Placenta From A Mouse Model Of Diabetes In Pregnancy, J. M. Salbaum, C. Kruger, X. Zhang, N. Arbour Delahaye, G. Pavlinkova, D. H. Burk, C. Kappen Jul 2011

Altered Gene Expression And Spongiotrophoblast Differentiation In Placenta From A Mouse Model Of Diabetes In Pregnancy, J. M. Salbaum, C. Kruger, X. Zhang, N. Arbour Delahaye, G. Pavlinkova, D. H. Burk, C. Kappen

Faculty Publications

Aims/hypothesis: Pregnancies complicated by diabetes have a higher risk of adverse outcomes for mothers and children, including predisposition to disease later in life, e.g. metabolic syndrome and hypertension. We hypothesised that adverse outcomes from diabetic pregnancies may be linked to compromised placental function, and sought to identify cellular and molecular abnormalities in diabetic placenta. Methods: Using a mouse model of diabetic pregnancy, placental gene expression was assayed at mid-gestation and cellular composition analysed at various stages. Genome-wide expression profiling was validated by quantitative PCR and tissue localisation studies were performed to identify cellular correlates of altered gene expression in diabetic …

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Maize-N: A Decision Tool For Nitrogen Management In Maize, T. D. Setiyono, H. Yang, D. T. Walters, A. Dobermann, R. B. Ferguson, D. F. Roberts, D. J. Lyon, D. E. Clay, K. G. Cassman Jul 2011

Maize-N: A Decision Tool For Nitrogen Management In Maize, T. D. Setiyono, H. Yang, D. T. Walters, A. Dobermann, R. B. Ferguson, D. F. Roberts, D. J. Lyon, D. E. Clay, K. G. Cassman

Faculty Publications

Nitrogen fertilizer efficiency has a large influence on profit, energy efficiency, N losses to the environment, and greenhouse gas emissions in maize (Zea mays L.) production. Our purpose was to develop a robust decision-support tool to help inform N fertilizer recommendations and to compare performance of this tool relative to existing recommendation approaches. Maize-N is a simulation model for estimating economically optimum N fertilizer rates (EONR) for maize. The model estimates the EONR based on uptake efficiency of the applied N, expected yield response, market prices of grain and N fertilizer, and mechanistic components of soil N mineralization. Uptake efficiency …

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The Gp130 Receptor Cytokine Family: Regulators Of Adipocyte Development And Function, Ursula A. White, Jacqueline M. Stephens Jun 2011

The Gp130 Receptor Cytokine Family: Regulators Of Adipocyte Development And Function, Ursula A. White, Jacqueline M. Stephens

Faculty Publications

Gp130 cytokines are involved in the regulation of numerous biological processes, including hematopoiesis, immune response, inflammation, cardiovascular action, and neuronal survival. These cytokines share glycoprotein 130 as a common signal transducer in their receptor complex and typically activate STAT3. Most gp130 cytokines have paracrine or endocrine actions, and their levels can be measured in circulation in rodents and humans. In recent years, various laboratories have conducted studies to demonstrate that gp130 cytokines can modulate adipocyte development and function. Therefore, these studies suggest that some gp130 cytokines may be viable anti obesity therapeutics. In this review, we will summarize the reported …

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Evaluation Of Juvenile Hormone Analogues As Rodent Feed-Through Insecticides For Control Of Immature Phlebotomine Sandflies, T. M. Mascari, M. A. Mitchell, E. D. Rowton, L. D. Foil Jun 2011

Evaluation Of Juvenile Hormone Analogues As Rodent Feed-Through Insecticides For Control Of Immature Phlebotomine Sandflies, T. M. Mascari, M. A. Mitchell, E. D. Rowton, L. D. Foil

Faculty Publications

The juvenile hormone analogues methoprene and pyriproxyfen were evaluated as rodent feed-through insecticides for control of immature stages of the sandfly Phlebotomus papatasi Scopoli (Diptera: Psychodidae). The development and survival of P. papatasi second-instar larvae fed faeces from Syrian hamsters, Mesocricetus auratus, that had been fed a diet containing methoprene (0, 9.788, 97.88 or 978.8 p.p.m.) or pyriproxyfen (0, 9.82, 98.2 or 982 p.p.m.) were evaluated. The faeces of methoprene-treated hamsters greatly reduced the percentage of larvae that pupated at all concentrations tested and prevented adult emergence at all but the lowest concentration (9.788 p.p.m.). Pyriproxyfen prevented both pupation and …

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Developing Resistance To Aflatoxin In Maize And Cottonseed, Jeffrey W. Cary, Kanniah Rajasekaran, Robert L. Brown, Meng Luo, Zhi Yuan Chen, Deepak Bhatnagar Jun 2011

Developing Resistance To Aflatoxin In Maize And Cottonseed, Jeffrey W. Cary, Kanniah Rajasekaran, Robert L. Brown, Meng Luo, Zhi Yuan Chen, Deepak Bhatnagar

Faculty Publications

At this time, no ''magic bullet'' for solving the aflatoxin contamination problem in maize and cottonseed has been identified, so several strategies must be utilized simultaneously to ensure a healthy crop, free of aflatoxins. The most widely explored strategy for the control of aflatoxin contamination is the development of preharvest host resistance. This is because A. flavus infects and produces aflatoxins in susceptible crops prior to harvest. In maize production, the host resistance strategy has gained prominence because of advances in the identification of natural resistance traits. However, native resistance in maize to aflatoxin contamination is polygenic and complex and, …

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Association Of Genetic Variation With Systolic And Diastolic Blood Pressure Among African Americans: The Candidate Gene Association Resource Study, Ervin R. Fox, J. Hunter Young, Yali Li, Albert W. Dreisbach, Brendan J. Keating, Solomon K. Musani, Kiang Liu, Alanna C. Morrison, Santhi Ganesh, Abdullah Kutlar, Vasan S. Ramachandran, Josef F. Polak, Richard R. Fabsitz, Daniel L. Dries, Deborah N. Farlow, Susan Redline, Adebowale Adeyemo, Joel N. Hirschorn, Yan V. Sun, Sharon B. Wyatt, Alan D. Penman, Walter Palmas, Jerome I. Rotter, Raymond R. Townsend, Ayo P. Doumatey, Bamidele O. Tayo, Thomas H. Mosley, Helen N. Lyon, Sun J. Kang, Charles N. Rotimi, Richard S. Cooper, Nora Franceschini, J. David Curb Jun 2011

Association Of Genetic Variation With Systolic And Diastolic Blood Pressure Among African Americans: The Candidate Gene Association Resource Study, Ervin R. Fox, J. Hunter Young, Yali Li, Albert W. Dreisbach, Brendan J. Keating, Solomon K. Musani, Kiang Liu, Alanna C. Morrison, Santhi Ganesh, Abdullah Kutlar, Vasan S. Ramachandran, Josef F. Polak, Richard R. Fabsitz, Daniel L. Dries, Deborah N. Farlow, Susan Redline, Adebowale Adeyemo, Joel N. Hirschorn, Yan V. Sun, Sharon B. Wyatt, Alan D. Penman, Walter Palmas, Jerome I. Rotter, Raymond R. Townsend, Ayo P. Doumatey, Bamidele O. Tayo, Thomas H. Mosley, Helen N. Lyon, Sun J. Kang, Charles N. Rotimi, Richard S. Cooper, Nora Franceschini, J. David Curb

Faculty Publications

The prevalence of hypertension in African Americans (AAs) is higher than in other US groups; yet, few have performed genome-wide association studies (GWASs) in AA. Among people of European descent, GWASs have identified genetic variants at 13 loci that are associated with blood pressure. It is unknown if these variants confer susceptibility in people of African ancestry. Here, we examined genome-wide and candidate gene associations with systolic blood pressure (SBP) and diastolic blood pressure (DBP) using the Candidate Gene Association Resource (CARe) consortium consisting of 8591 AAs. Genotypes included genome-wide singlenucleotide polymorphism (SNP) data utilizing the Affymetrix 6.0 array with …

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Projecting Climate Change Effects On Forest Net Primary Productivity In Subtropical Louisiana, Usa, Fugui Wang, Y. Jun Xu, Thomas J. Dean Jun 2011

Projecting Climate Change Effects On Forest Net Primary Productivity In Subtropical Louisiana, Usa, Fugui Wang, Y. Jun Xu, Thomas J. Dean

Faculty Publications

This study projected responses of forest net primary productivity (NPP) to three climate change scenarios at a resolution of 5 km × 5 km across the state of Louisiana, USA. In addition, we assessed uncertainties associated with the NPP projection at the grid and state levels. Climate data of the scenarios were derived from Community Climate System Model outputs. Changes in annual NPP between 2000 and 2050 were projected with the forest ecosystem model PnET-II. Results showed that forest productivity would increase under climate change scenarios A1B and A2, but with scenario B1, it would peak during 2011-2020 and then …

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Assessing Physical Activity And Its Relationship To Cardiovascular Risk Factors: Nhanes 2003-2006, Amy Luke, Lara R. Dugas, Ramon A. Durazo-Arvizu, Guichan Cao, Richard S. Cooper May 2011

Assessing Physical Activity And Its Relationship To Cardiovascular Risk Factors: Nhanes 2003-2006, Amy Luke, Lara R. Dugas, Ramon A. Durazo-Arvizu, Guichan Cao, Richard S. Cooper

Faculty Publications

Background: Levels of physical activity (PA) in the general population are difficult to characterize. Historically measurement has been based on self-report, which can be subject to bias. PA monitor use has created opportunities to improve surveillance and analytic research on activity and health. The aims of the current study were to investigate the associations between objectively measured PA and cardiovascular disease risk factors and obesity. Methods. Data on PA from accelerometers, demographics, blood pressure, plasma glucose and lipids, self-reported hypertension and diabetes were obtained for adults, ages 20-65, in the NHANES surveys, 2003-2006. Outcomes were assessed as levels of moderate …

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Autoregulation Of An Rna Polymerase Ii Promoter By The Rna Polymerase Iii Transcription Factor Iii C (TfIiiC) Complex, Richard A. Kleinschmidt, Kimberly E. Leblanc, David Donze May 2011

Autoregulation Of An Rna Polymerase Ii Promoter By The Rna Polymerase Iii Transcription Factor Iii C (TfIiiC) Complex, Richard A. Kleinschmidt, Kimberly E. Leblanc, David Donze

Faculty Publications

Extra TFIIIC (ETC) sites are chromosomal locations bound in vivo by the RNA polymerase III (Pol III) transcription factor III C (TF IIIC) complex, but are not necessarily associated with Pol III transcription. Although the location of ETC sequences are conserved in budding yeast, and similar sites are found in other organisms, their functions are largely unstudied. One such site, ETC6 in Saccharomyces cerevisiae, lies upstream of TFC6, a gene encoding a subunit of the TFIIIC complex itself. Promoter analysis shows that the ETC6 B-box sequence is involved in autoregulation of the TFC6 promoter. Mutation of ETC6 increases TFC6 mRNA …

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Forage Conservation Efficiency And Lactation Response To Bahiagrass Conserved As Barn-Stored Hay, Outdoor-Stored Hay, Or Baleage, M. E. Mccormick, K. J. Han, V. R. Moreira, D. C. Blouin, S. Forbes May 2011

Forage Conservation Efficiency And Lactation Response To Bahiagrass Conserved As Barn-Stored Hay, Outdoor-Stored Hay, Or Baleage, M. E. Mccormick, K. J. Han, V. R. Moreira, D. C. Blouin, S. Forbes

Faculty Publications

A study was conducted to determine the effect of conserving bahiagrass as outdoor-stored hay (OSH), barn-stored hay (BSH), or baleage (BAL) on storage losses and lactation performance by Holstein cows. For baleage production, bahiagrass forage was cut and allowed to dry for 20. h in windrows, baled (1.2×1.4. m), and individually wrapped with white stretch film. Forage cut on the same day was dried to hay stage, baled (1.2×1.6. m round bales), and stored either outdoors (OSH) or in an enclosed hay barn (BSH). Bales were core sampled and weighed at harvest and again following a 6-mo storage period. At …

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Wood Consumption By Formosan Subterranean Termites (Isoptera: Rhinotermitidae) As Affected By Wood Moisture Content And Temperature, Bal K. Gautam, Gregg Henderson May 2011

Wood Consumption By Formosan Subterranean Termites (Isoptera: Rhinotermitidae) As Affected By Wood Moisture Content And Temperature, Bal K. Gautam, Gregg Henderson

Faculty Publications

Understanding foraging behaviors and food preferences of termite colonies is critical to optimizing control strategies. The relationship between the moisture content (MC) of wood blocks and the feeding preference of Coptotermes formosanus Shiraki (Isoptera: Rhinotermitidae) at three ambient temperatures (19, 28, and 35°C) was investigated with multiple-choice as well as no-choice feeding bioassays. In multiple-choice tests, when four wood blocks with initial MC as dry (0-3%), low MC (22-24%), medium MC (70-90%), and high MC (125-150%) were exposed to workers and soldiers, the highest consumption was found in the high MC wood blocks at all three temperatures, although high MC …

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Template To Improve Glycemic Control Without Reducing Adiposity Or Dietary Fat, R. Krishnapuram, E. J. Dhurandhar, O. Dubuisson, H. Kirk-Ballard, S. Bajpeyi, N. Butte, M. S. Sothern, E. Larsen-Meyer, S. Chalew, B. Bennett, A. K. Gupta, F. L. Greenway, W. Johnson, M. Brashear, G. Reinhart, T. Rankinen, C. Bouchard, W. T. Cefalu, J. Ye, R. Javier, A. Zuberi, N. V. Dhurandhar May 2011

Template To Improve Glycemic Control Without Reducing Adiposity Or Dietary Fat, R. Krishnapuram, E. J. Dhurandhar, O. Dubuisson, H. Kirk-Ballard, S. Bajpeyi, N. Butte, M. S. Sothern, E. Larsen-Meyer, S. Chalew, B. Bennett, A. K. Gupta, F. L. Greenway, W. Johnson, M. Brashear, G. Reinhart, T. Rankinen, C. Bouchard, W. T. Cefalu, J. Ye, R. Javier, A. Zuberi, N. V. Dhurandhar

Faculty Publications

Drugs that improve chronic hyperglycemia independently of insulin signaling or reduction of adiposity or dietary fat intake may be highly desirable. Ad36, a human adenovirus, promotes glucose uptake in vitro independently of adiposity or proximal insulin signaling. We tested the ability of Ad36 to improve glycemic control in vivo and determined if the natural Ad36 infection in humans is associated with better glycemic control. C57BL/6J mice fed a chow diet or made diabetic with a high-fat (HF) diet were mock infected or infected with Ad36 or adenovirus Ad2 as a control for infection. Postinfection (pi), systemic glycemic control, hepatic lipid …

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St. John’S Wort And Artemisia Extracts Modulate Adipocyte Development And Function, Zhaleh Amini May 2011

St. John’S Wort And Artemisia Extracts Modulate Adipocyte Development And Function, Zhaleh Amini

Honors Capstones

No abstract provided.

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Oxidative Derivatization Of Folic Acid Monitored By Capillary Electrophoresis With Uv Absorbance And Fluorescence Detection, Jeffrey P. Cunniff May 2011

Oxidative Derivatization Of Folic Acid Monitored By Capillary Electrophoresis With Uv Absorbance And Fluorescence Detection, Jeffrey P. Cunniff

Honors Capstones

No abstract provided.

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The Ability Of Households In Southeast Louisiana Eligible For The Supplemental Nutrition Assistance Program To Meet The Food Recommendations Of The 2010 Dietary Guidelines For Americans, Alicia Rodriguez May 2011

The Ability Of Households In Southeast Louisiana Eligible For The Supplemental Nutrition Assistance Program To Meet The Food Recommendations Of The 2010 Dietary Guidelines For Americans, Alicia Rodriguez

Honors Capstones

No abstract provided.

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Dental Genetic Traits Of Selected Maya Burials From Wild Cane Cay And Moho Cay, Belize, Kelly Heim May 2011

Dental Genetic Traits Of Selected Maya Burials From Wild Cane Cay And Moho Cay, Belize, Kelly Heim

Honors Capstones

No abstract provided.

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“Human Rights, Development, And Global Justice”, Ian Cruise Apr 2011

“Human Rights, Development, And Global Justice”, Ian Cruise

Honors Capstones

No abstract provided.

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Rex1/Zfp42 As An Epigenetic Regulator For Genomic Imprinting, Jeong Do Kim, Hana Kim, Muhammad B. Ekram, Sungryul Yu, Christopher Faulk, Joomyeong Kim Apr 2011

Rex1/Zfp42 As An Epigenetic Regulator For Genomic Imprinting, Jeong Do Kim, Hana Kim, Muhammad B. Ekram, Sungryul Yu, Christopher Faulk, Joomyeong Kim

Faculty Publications

Zfp42/Rex1 (reduced expression gene 1) is a well-known stem-cell marker that has been duplicated from YY1 in the eutherian lineage. In the current study, we characterized the in vivo roles of Rex1 using a mutant mouse line disrupting its transcription. In contrast to the ubiquitous expression of YY1, Rex1 is expressed only during spermatogenesis and early embryogenesis and also in a very limited area of the placenta. Yet, the gene dosage of Rex1 is very critical for the survival of the late-stage embryos and neonates. This delayed phenotypic consequence suggests potential roles for Rex1 in establishing and maintaining unknown epigenetic …

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Faculty Senate Newsletter, April 2011, Louisiana State University And Agricultural & Mechanical College Apr 2011

Faculty Senate Newsletter, April 2011, Louisiana State University And Agricultural & Mechanical College

LSU Faculty Senate Publications

Message from President: In my last “welcome” column, I addressed the question of Louisiana universities after the economic crisis, suggesting a variety of adjustments that would increase morale and promote economic justice in institutions that reward fashion and momentary stellar performances more often than they recognize adventurous dissent or long-term projects. Although not inexhaustible, the topic of higher education after our present calamities merits a bit more consideration, especially with regard to structural changes that might advance our institution even in the midst of economic distress. Having commenced its career as the cultural equivalent of a fortification, LSU has always …

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Ratiometric Coumarin-Neutral Red (Coner) Nanoprobe For Detection Of Hydroxyl Radicals, Gabriela M. Ganea, Paulina E. Kolic, Bilal El-Zahab, Isiah M. Warner Apr 2011

Ratiometric Coumarin-Neutral Red (Coner) Nanoprobe For Detection Of Hydroxyl Radicals, Gabriela M. Ganea, Paulina E. Kolic, Bilal El-Zahab, Isiah M. Warner

Faculty Publications

Excessive production of reactive oxygen species can lead to alteration of cellular functions responsible for many diseases including cardiovascular diseases, neurodegenerative diseases, cancer, and aging. Hydroxyl radical is a short-lived radical which is considered very aggressive due to its high reactivity toward biological molecules. In this study, a COumarin-NEutral Red (CONER) nanoprobe was developed for detection of hydroxyl radical based on the ratiometric fluorescence signal between 7-hydroxy coumarin 3-carboxylic acid and neutral red dyes. Biocompatible poly lactide-co-glycolide (PLGA) nanoparticles containing encapsulated neutral red were produced using a coumarin 3-carboxylic acid conjugated poly(sodium N-undecylenyl-Nε-lysinate) (C3C-poly-Nε- SUK) as moiety reactive to hydroxyl …

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Skeletal Muscle Mitochondrial Capacity And Insulin Resistance In Type 2 Diabetes, Sudip Bajpeyi, Magdalena Pasarica, Cedric Moro, Kevin Conley, Sharon Jubrias, Olga Sereda, David H. Burk, Zhengyu Zhang, Alok Gupta, Lise Kjems, Steven R. Smith Apr 2011

Skeletal Muscle Mitochondrial Capacity And Insulin Resistance In Type 2 Diabetes, Sudip Bajpeyi, Magdalena Pasarica, Cedric Moro, Kevin Conley, Sharon Jubrias, Olga Sereda, David H. Burk, Zhengyu Zhang, Alok Gupta, Lise Kjems, Steven R. Smith

Faculty Publications

Objective: The objective of this study was to determine the role of maximum mitochondrial capacity on the variation in insulin sensitivity within a population of patients with type 2 diabetes mellitus (T2DM). Research Design and Methods: Fifty-eight participants enrolled in a cross-sectional design: eight active controls [maximum aerobic capacity (VO2max) . 40 ml/kg . min], 17 healthy sedentary controlswithout a family history (FH-) and seven with a family history (FH+) of diabetes, four obese participants, and 21 patients with T2DM. Mitochondrial capacity was measured noninvasively using 31P magnetic resonance spectroscopy of the vastus lateralis. Maximal ATP synthetic rate (ATPmax) was …

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Rice Response To Nitrogen Fertilization Under Stale Seedbed And Conventional Tillage Systems, D. L. Harrell, B. S. Tubaña, J. Lofton, Y. Kanke Mar 2011

Rice Response To Nitrogen Fertilization Under Stale Seedbed And Conventional Tillage Systems, D. L. Harrell, B. S. Tubaña, J. Lofton, Y. Kanke

Faculty Publications

Drill-seeded, delayed-flood rice (Oryza sativa L.) using fall-stale seedbed (FSS) tillage has risen in popularity over the past decade in the southern USA. Nitrogen research in rice has historically focused on conventional tillage (CT). The objective of the current study was to evaluate potential diff erences in agronomic characteristics, optimal N rate, N uptake, and N fertilizer recovery efficiency (RE) between the FSS and CT rice production systems. Two varieties ('Catahoula' and 'Neptune'), two tillage systems (CT and FSS), and nine N rates (0, 34, 67, 101, 134, 168, 202, 235, and 269 kg ha-1) were evaluated. Rice emerged 4 …

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The Nlrp3 Inflammasome Instigates Obesity-Induced Inflammation And Insulin Resistance, Bolormaa Vandanmagsar, Yun Hee Youm, Anthony Ravussin, Jose E. Galgani, Krisztian Stadler, Randall L. Mynatt, Eric Ravussin, Jacqueline M. Stephens, Vishwa Deep Dixit Feb 2011

The Nlrp3 Inflammasome Instigates Obesity-Induced Inflammation And Insulin Resistance, Bolormaa Vandanmagsar, Yun Hee Youm, Anthony Ravussin, Jose E. Galgani, Krisztian Stadler, Randall L. Mynatt, Eric Ravussin, Jacqueline M. Stephens, Vishwa Deep Dixit

Faculty Publications

The emergence of chronic inflammation during obesity in the absence of overt infection or well-defined autoimmune processes is a puzzling phenomenon. The Nod-like receptor (NLR) family of innate immune cell sensors, such as the nucleotide-binding domain, leucine-rich-containing family, pyrin domain-containing-3 (Nlrp3, but also known as Nalp3 or cryopyrin) inflammasome are implicated in recognizing certain nonmicrobial originated 'danger signals' leading to caspase-1 activation and subsequent interleukin-1β 2 (IL-1β 2) and IL-18 secretion. We show that calorie restriction and exercise-mediated weight loss in obese individuals with type 2 diabetes is associated with a reduction in adipose tissue expression of Nlrp3 as well …

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Neighborhood Stressors And Race/Ethnic Differences In Hypertension Prevalence (The Multi-Ethnic Study Of Atherosclerosis), Mahasin S. Mujahid, Ana V. Diez Roux, Richard C. Cooper, Steven Shea, David R. Williams Feb 2011

Neighborhood Stressors And Race/Ethnic Differences In Hypertension Prevalence (The Multi-Ethnic Study Of Atherosclerosis), Mahasin S. Mujahid, Ana V. Diez Roux, Richard C. Cooper, Steven Shea, David R. Williams

Faculty Publications

BackgroundThe reasons for racial/ethnic disparities in hypertension (HTN) prevalence in the United States are poorly understood.MethodsUsing data from the Multi-Ethnic Study of Atherosclerosis (MESA), we investigated whether individual- and neighborhood-level chronic stressors contribute to these disparities in cross-sectional analyses. The sample consisted of 2,679 MESA participants (45-84 years) residing in Baltimore, New York, and North Carolina. HTN was defined as systolic or diastolic blood pressure 140 or 90mmHg, or taking antihypertensive medications. Individual-level chronic stress was measured by self-reported chronic burden and perceived major and everyday discrimination. A measure of neighborhood (census tract) chronic stressors (i.e., physical disorder, violence) was …

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Seasonal Microphytobenthos On The Hypoxic Northern Gulf Of Mexico Continental Shelf, M M. Baustian, N N. Rabalais, W L. Morrison, R. Eugene Turner, M M. Baustian Jan 2011

Seasonal Microphytobenthos On The Hypoxic Northern Gulf Of Mexico Continental Shelf, M M. Baustian, N N. Rabalais, W L. Morrison, R. Eugene Turner, M M. Baustian

Faculty Publications

The presence of photosynthetic organisms on the seafloor may indicate whether oxygen evolution contributes to the bottom water oxygen pool in the hypoxic area of the northern Gulf of Mexico. We sampled 3 stations (depth: 14, 20 and 23 m) 100 km west of the mouth of the Mississippi River over 3 hypoxic annual cycles to determine whether microphytobenthos or settled phytoplankton existed on the sediment surface. Microscopy and high-performance liquid chromatography were used to determine the presence and composition, and to estimate the biomass of microphytobenthos and phytoplankton in surface and bottom waters and sediments. The sediment community (cells …

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Integrating Stomach Content And Stable Isotope Analyses To Quantify The Diets Of Pygoscelid Penguins, Michael J. Polito, Wayne Z. Trivelpiece, Nina J. Karnovsky, Elizabeth Ng, William P. Patterson, Steven D. Emslie Jan 2011

Integrating Stomach Content And Stable Isotope Analyses To Quantify The Diets Of Pygoscelid Penguins, Michael J. Polito, Wayne Z. Trivelpiece, Nina J. Karnovsky, Elizabeth Ng, William P. Patterson, Steven D. Emslie

Faculty Publications

No abstract provided.

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School Of Renewable Natural Resources Newsletter, Fall 2011, Louisiana State University And Agricultural & Mechanical College Jan 2011

School Of Renewable Natural Resources Newsletter, Fall 2011, Louisiana State University And Agricultural & Mechanical College

Research Matters & RNR Newsletters

The annual newsletter from the School of Renewable Natural Resources was a publication which aimed to update and entertain interested readers with the news and research from RNR faculty, students and staff.

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Components, Volume 7 (2011), Lsu Center For Computation & Technology Jan 2011

Components, Volume 7 (2011), Lsu Center For Computation & Technology

Components

No abstract provided.

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Five Blood Pressure Loci Identified By An Updated Genome-Wide Linkage Scan: Meta-Analysis Of The Family Blood Pressure Program, Jeannette Simino, Gang Shi, Rezart Kume, Karen Schwander, Michael A. Province, C. Charles Gu, Sharon Kardia, Aravinda Chakravarti, Georg Ehret, Richard A. Olshen, Stephen T. Turner, Low Tone Ho, Xiaofeng Zhu, Cashell Jaquish, Dina Paltoo, Richard S. Cooper, Alan Weder, J. David Curb, Eric Boerwinkle, Steven C. Hunt, Dabeeru C. Rao Jan 2011

Five Blood Pressure Loci Identified By An Updated Genome-Wide Linkage Scan: Meta-Analysis Of The Family Blood Pressure Program, Jeannette Simino, Gang Shi, Rezart Kume, Karen Schwander, Michael A. Province, C. Charles Gu, Sharon Kardia, Aravinda Chakravarti, Georg Ehret, Richard A. Olshen, Stephen T. Turner, Low Tone Ho, Xiaofeng Zhu, Cashell Jaquish, Dina Paltoo, Richard S. Cooper, Alan Weder, J. David Curb, Eric Boerwinkle, Steven C. Hunt, Dabeeru C. Rao

Faculty Publications

Background A preliminary genome-wide linkage analysis of blood pressure in the Family Blood Pressure Program (FBPP) was reported previously. We harnessed the power and ethnic diversity of the final pooled FBPP dataset to identify novel loci for blood pressure thereby enhancing localization of genes containing less common variants with large effects on blood pressure levels and hypertension.MethodsWe performed one overall and 4 race-specific meta-analyses of genome-wide blood pressure linkage scans using data on 4,226 African-American, 2,154 Asian, 4,229 Caucasian, and 2,435 Mexican-American participants (total N = 13,044). Variance components models were fit to measured (raw) blood pressure levels and two …

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Reverse Causation And Illness-Related Weight Loss In Observational Studies Of Body Weight And Mortality, Katherine M. Flegal, Barry I. Graubard, David F. Williamson, Richard S. Cooper Jan 2011

Reverse Causation And Illness-Related Weight Loss In Observational Studies Of Body Weight And Mortality, Katherine M. Flegal, Barry I. Graubard, David F. Williamson, Richard S. Cooper

Faculty Publications

In studies of weight and mortality, the construct of reverse causation has come to be used to imply that the exposure-outcome relation is biased by weight loss due to preexisting illness. Observed weight-mortality associations are sometimes thought to result from this bias. Evidence for the occurrence of such bias is weak and inconsistent, suggesting that either the analytical methods used have been inadequate or else illness-related weight loss is not an important source of bias. Deleting participants has been the most frequent approach to control possible bias. As implemented, this can lead to deletion of almost 90% of all deaths …

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