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Articles 211 - 227 of 227

Full-Text Articles in Life Sciences

The Effects Of Varying The Timing Of Inputs On A Neural Oscillator, Christina Ambrosio-Mouser, Farzan Nadim, Amitabha Bose Jan 2006

The Effects Of Varying The Timing Of Inputs On A Neural Oscillator, Christina Ambrosio-Mouser, Farzan Nadim, Amitabha Bose

Publications and Research

The gastric mill network of the stomatogastric ganglion of the crab Cancer borealis is comprised of a set of neurons that require modulatory input from outside the stomatogastric ganglion and input from the pyloric network of the animal in order to oscillate. Here we study how the frequency of the gastric mill network is determined when it receives rhythmic input from two different sources but where the timing of these inputs may differ. We find that over a certain range of the time difference one of the two rhythmic inputs plays no role what so ever in determining the network …


A-State Biology Faculty To Publish Adventure Book, Aldemaro Romero Jr., Joy Trauth Jan 2006

A-State Biology Faculty To Publish Adventure Book, Aldemaro Romero Jr., Joy Trauth

Publications and Research

No abstract provided.


Quest For The ‘Holy Grail Bird’. Discovery Of The Ivory-Billed Woodpecker Brings Arkansas Unprecedented Attention, Aldemaro Romero Jr., Jim Bednarz Jan 2005

Quest For The ‘Holy Grail Bird’. Discovery Of The Ivory-Billed Woodpecker Brings Arkansas Unprecedented Attention, Aldemaro Romero Jr., Jim Bednarz

Publications and Research

No abstract provided.


Flying Squirrel Is Seldom Seen, Often Misunderstood Member Of Arkansas Wildlife, Aldemaro Romero Jr., Thomas S. Risch Jan 2005

Flying Squirrel Is Seldom Seen, Often Misunderstood Member Of Arkansas Wildlife, Aldemaro Romero Jr., Thomas S. Risch

Publications and Research

No abstract provided.


Aaas Lecture Series On Women In Science And Engineering, Maribel Vazquez Jun 2004

Aaas Lecture Series On Women In Science And Engineering, Maribel Vazquez

Publications and Research

The winning essay for a Travel Award from the American Association for the Advancement in Science Women Lecture Series.

http://ehrweb.aaas.org/womeninscience/essays/vazquez.htm


Meiotic And Mitotic Phenotypes Conferred By The Blm1-1 Mutation In Saccharomyces Cerevisiae And Msh4 Suppression Of The Bleomycin Hypersusceptibility, Georgia Anyatonwu, Ediberto Garcia, Ajay Pramanik, Marie Powell, Carol Wood Moore Jan 2003

Meiotic And Mitotic Phenotypes Conferred By The Blm1-1 Mutation In Saccharomyces Cerevisiae And Msh4 Suppression Of The Bleomycin Hypersusceptibility, Georgia Anyatonwu, Ediberto Garcia, Ajay Pramanik, Marie Powell, Carol Wood Moore

Publications and Research

Oxidative damage can lead to a number of diseases, and can be fatal. The blm1-1 mutation of Saccharomyces cerevisiae confers hypersusceptibility to lethal effects of the oxidative, anticancer and antifungal agent, bleomycin. For the current report, additional defects conferred by the mutation in meiosis and mitosis were investigated. The viability of spores produced during meiosis by homozygous normal BLM1/BLM1, heterozygous BLM1/blm1-1, and homozygous mutant blm1-1/blm1-1 diploid strains was studied and compared. Approximately 88% of the tetrads derived from homozygous blm1-1/blm1-1 mutant diploid cells only produced one or two viable spores. In contrast, just one tetrad among all BLM1/BLM1 and BLM1/blm1-1 …


Up-Regulation Of Neuronal Calcium Sensor-1 (Ncs-1) In The Prefrontal Cortex Of Schizophrenic And Bipolar Patients, Phil Ok Koh, Ashiwel S. Undieh, Robert Levenson, Patricia S. Goldman-Rakic, Michael S. Lidow Jan 2003

Up-Regulation Of Neuronal Calcium Sensor-1 (Ncs-1) In The Prefrontal Cortex Of Schizophrenic And Bipolar Patients, Phil Ok Koh, Ashiwel S. Undieh, Robert Levenson, Patricia S. Goldman-Rakic, Michael S. Lidow

Publications and Research

The delineation of dopamine dysfunction in the mentally ill has been a long-standing quest of biological psychiatry. The present study focuses on a recently recognized group of dopamine receptor- interacting proteins as possible novel sites of dysfunction in schizophrenic and bipolar patients. We demonstrate that the dorsolateral prefrontal cortex in schizophrenia and bipolar cases from the Stanley Foundation Neuropathology Consortium display significantly elevated levels of the D2 dopamine receptor desensitization regulatory protein, neuronal calcium sensor-1. These levels of neuronal calcium sensor-1 were not influenced by age, gender, hemisphere, cause of death, postmortem period, alcohol consumption, or antipsychotic and mood stabilizing …


Low Concentration Microenvironments Enhance The Migration Of Neonatal Cells Of Glial Lineage, Richard A. Able, Jr., Celestin Ngnabeuye, Cade Beck, Eric C. Holland, Maribel Vazquez Jun 2002

Low Concentration Microenvironments Enhance The Migration Of Neonatal Cells Of Glial Lineage, Richard A. Able, Jr., Celestin Ngnabeuye, Cade Beck, Eric C. Holland, Maribel Vazquez

Publications and Research

Glial tumors have demonstrated abilities to sustain growth via recruitment of glial progenitor cells (GPCs), which is believed to be driven by chemotactic cues. Previous studies have illustrated that mouse GPCs of different genetic backgrounds are able to replicate the dispersion pattern seen in the human disease. How GPCs with genetic backgrounds transformed by tumor paracrine signaling respond to extracellular cues via migration is largely unexplored, and remains a limiting factor in utilizing GPCs as therapeutic targets. In this study, we utilized a microfluidic device to examine the chemotaxis of three genetically-altered mouse GPC populations towards tumor conditioned media, as …


Return To The Cumaca Cave, Trinidad, W.I, Aldemaro Romero Jr., Anuradha Singh, Annabelle Mckie, Michael Manna, Ruth Baker, Kelly M. Paulson Jan 2001

Return To The Cumaca Cave, Trinidad, W.I, Aldemaro Romero Jr., Anuradha Singh, Annabelle Mckie, Michael Manna, Ruth Baker, Kelly M. Paulson

Publications and Research

No abstract provided.


Ecology Of The Malay Civet (Viverra Tangalunga) In A Logged And An Unlogged Forest In Sabah, East Malaysia, Christina P. Colon May 1999

Ecology Of The Malay Civet (Viverra Tangalunga) In A Logged And An Unlogged Forest In Sabah, East Malaysia, Christina P. Colon

Publications and Research

Malay civets in a dipterocarp rain forest were studied from December, 1995, through June, 1997, in the Ulu Segama Forest Reserve in Sabah, East Malaysia. To investigate the basic ecology of this species and explore the potential impact of selective logging, data on home range, activity and diet were collected on study animals in an unlogged and a selectively logged forest, and comparisons made.

Density in the unlogged forest was 1/0.46 km2 , and 1/1.07 km2 in the logged forest. Mean home range size based on a 95% minimum convex polygon was 110 ha. and did not differ …


Cope, Caves, And Skeletons In The Closet, Aldemaro Romero Jr., Andrea Romero Jan 1999

Cope, Caves, And Skeletons In The Closet, Aldemaro Romero Jr., Andrea Romero

Publications and Research

No abstract provided.


There’S Is More To Biology Than Molecules, Aldemaro Romero Jr. Jan 1999

There’S Is More To Biology Than Molecules, Aldemaro Romero Jr.

Publications and Research

No abstract provided.


Myelin-Associated Glycoprotein Interacts With Neurons Via A Sialic Acid Binding Site At Arg118 And A Distinct Neurite Inhibition Site, Song Tang, Ying Jing Shen, Maria Elena Debellard, Gitali Mukhopadhyay, James L. Salzer, Paul R. Crocker, Marie T. Filbin Sep 1997

Myelin-Associated Glycoprotein Interacts With Neurons Via A Sialic Acid Binding Site At Arg118 And A Distinct Neurite Inhibition Site, Song Tang, Ying Jing Shen, Maria Elena Debellard, Gitali Mukhopadhyay, James L. Salzer, Paul R. Crocker, Marie T. Filbin

Publications and Research

Inhibitory components in myelin are largely responsible for the lack of regeneration in the mammalian CNS. Myelin-associated glycoprotein (MAG), a sialic acid binding protein and a component of myelin, is a potent inhibitor of neurite outgrowth from a variety of neurons both in vitro and in vivo. Here, we show that MAG’s sialic acid binding site is distinct from its neurite inhibitory activity. Alone, sialic acid–dependent binding of MAG to neurons is insufficient to effect inhibition of axonal growth. Thus, while soluble MAG-Fc (MAG extracellular domain fused to Fc), a truncated form of MAG-Fc missing Ig-domains 4 and 5, MAG(d1-3)-Fc, …


El Oso Frontino, Rey De Los Andes, Aldemaro Romero Jr. Jan 1992

El Oso Frontino, Rey De Los Andes, Aldemaro Romero Jr.

Publications and Research

No abstract provided.


Scientific Collecting In Caves, Aldemaro Romero Jr. Jan 1983

Scientific Collecting In Caves, Aldemaro Romero Jr.

Publications and Research

No abstract provided.


El Ornitorrinco, Ese Absurdo Mamífero Ponedor Huevos, Aldemaro Romero Jr. Jan 1976

El Ornitorrinco, Ese Absurdo Mamífero Ponedor Huevos, Aldemaro Romero Jr.

Publications and Research

No abstract provided.


Las Increíbles Arañas Acuáticas, Aldemaro Romero Jr. Jan 1974

Las Increíbles Arañas Acuáticas, Aldemaro Romero Jr.

Publications and Research

No abstract provided.