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Articles 151 - 178 of 178
Full-Text Articles in Medicine and Health Sciences
Transfer Rna Comes Of Age, Michael Ibba
Transfer Rna Comes Of Age, Michael Ibba
Biology, Chemistry, and Environmental Sciences Faculty Articles and Research
"The year the journal RNA was founded was slated by some in scientific publishing to be the year that one particular type of RNA's run in the spotlight would end. In 1995 I had recently started as a post-doc with Dieter Söll at Yale when he came into the lab to solemnly inform us all that an editor at a certain (S)cience journal had just told him “we won't be publishing any more tRNA papers.” For a post-doc who had migrated across the Atlantic for the sole purpose of furthering his career by working on tRNA this was not great …
Descriptive Study Of Prescriptions For Opioids From A Suburban Academic Emergency Department Before New York's I-Stop Act., Lyncean Ung, Ronald Dvorkin, Steven Sattler, David P. Yens
Descriptive Study Of Prescriptions For Opioids From A Suburban Academic Emergency Department Before New York's I-Stop Act., Lyncean Ung, Ronald Dvorkin, Steven Sattler, David P. Yens
The School of Health Sciences Publications and Research
Introduction: Controlled prescription opioid use is perceived as a national problem attributed to all specialties. Our objective was to provide a descriptive analysis of prescriptions written for controlled opioids from a database of emergency department (ED) visits prior to the enactment of the I-STOP law, which requires New York prescribers to consult the Prescription Monitoring Program (PMP) prior to prescribing Schedule II, III, and IV controlled substances for prescriptions of greater than five days duration.
Methods: We conducted a retrospective medical record review of patients 21 years of age and older, who presented to the ED between July …
Human Anatomy And Physiology Preparatory Course (1st Edition), Carlos Liachovitzky
Human Anatomy And Physiology Preparatory Course (1st Edition), Carlos Liachovitzky
Open Educational Resources
The overall purpose of this preparatory course textbook is to help students familiarize with some terms and some basic concepts they will find later in the Human Anatomy and Physiology I course.
The organization and functioning of the human organism generally is discussed in terms of different levels of increasing complexity, from the smallest building blocks to the entire body. This Anatomy and Physiology preparatory course covers the foundations on the chemical level, and a basic introduction to cellular level, organ level, and organ system levels. There is also an introduction to homeostasis at the beginning.
Nootropics For Healthy Individuals, Jin Pyo Jeon
Nootropics For Healthy Individuals, Jin Pyo Jeon
The First-Year Papers (2010 - present)
No abstract provided.
Ghrelin, Timo D. Müller, Rubén Nogueiras, Mark L. Andermann, Zane B. Andrews, Stefan Anker, Jesús Argente, Allan Geliebter
Ghrelin, Timo D. Müller, Rubén Nogueiras, Mark L. Andermann, Zane B. Andrews, Stefan Anker, Jesús Argente, Allan Geliebter
Lander College of Arts and Sciences Publications and Research
Background: The gastrointestinal peptide hormone ghrelin was discovered in 1999 as the endogenous ligand of the growth hormone secretagogue receptor. Increasing evidence supports more complicated and nuanced roles for the hormone, which go beyond the regulation of systemic energy metabolism.
Scope of review: In this review, we discuss the diverse biological functions of ghrelin, the regulation of its secretion, and address questions that still remain 15 years after its discovery.
Major conclusions: In recent years, ghrelin has been found to have a plethora of central and peripheral actions in distinct areas including learning and memory, gut motility …
Biginelli Synthesis And Characterization Of Potentially Anti-Proliferative Dihydropyrimidinone Thione Analogs, Timothy K. Summers
Biginelli Synthesis And Characterization Of Potentially Anti-Proliferative Dihydropyrimidinone Thione Analogs, Timothy K. Summers
Theses and Dissertations
No abstract provided.
Connections Between The Effects Of Various Chemicals On The Development Of Drosophila Melanogaster And Homo Sapiens, Amy J. Brenner
Connections Between The Effects Of Various Chemicals On The Development Of Drosophila Melanogaster And Homo Sapiens, Amy J. Brenner
Honors Program Projects
This study, funded by the Elbert Pence and Fanny Boyce grant, attempts to draw conclusions between the effects of selected chemicals on Drosophila melanogaster and their potential effects on humans. It explores the effects of theobromine, caffeine, ethylene glycol, and ammonia on adult D. melanogaster and its developmental stages. Effects of these four chemicals on D. melanogaster are expected to provide insight into possible effects on humans.
The study was run in triplicate with vials containing different concentrations of each chemical being tested, with a control group vial containing no added chemicals. Observation of each vial was documented daily, noting …
R990g Polymorphism Of Calcium Sensing Receptor Gene Is Associated With High Parathyroid Hormone Levels In Subjects With Vitamin D Deficiency: A Cross-Sectional Study, Hafsa Majid, Aysha Habib Khan, Tariq Moatter
R990g Polymorphism Of Calcium Sensing Receptor Gene Is Associated With High Parathyroid Hormone Levels In Subjects With Vitamin D Deficiency: A Cross-Sectional Study, Hafsa Majid, Aysha Habib Khan, Tariq Moatter
Department of Pathology and Laboratory Medicine
Single nucleotide polymorphisms (SNPs), R990G and A986S of the calcium sensing receptor (CaSR) gene, are shown to influence response of parathyroid hormone (PTH) in subjects with optimal vitamin D levels. This cross-sectional study was conducted in subjects with vitaminDdeficiency (VDD) to observe association’s betweenCaSR polymorphisms, plasma iPTH, and serumcalcium levels. Adult females (𝑛 = 140) with known VDD, intact parathyroid hormone (iPTH), and calcium levels were recruited for genotype analysis.The frequencies of the 986 alleles GG, GT, and TT were 68%, 25%, and 7%, respectively, whereas the frequencies of the 990 alleles AA, AG, and GG were 80%, 8.9%, and …
In Vitro Evaluation Of The Cytotoxicity Of A Folate-Modified Β-Cyclodextrin As A New Anti-Cancer Drug Delivery System, Zlata Tofzikovskaya, Alan Casey, Orla L. Howe, Christine O'Connor, Mary Mcnamara
In Vitro Evaluation Of The Cytotoxicity Of A Folate-Modified Β-Cyclodextrin As A New Anti-Cancer Drug Delivery System, Zlata Tofzikovskaya, Alan Casey, Orla L. Howe, Christine O'Connor, Mary Mcnamara
Articles
Many chemotherapeutic drugs are therapeutically non-selective and do not distinguish between healthy cells and tumour cells which can result in severe side effects and toxicity. Drug delivery systems can be used to target specific cells and therefore may eliminate many of the side effects, increasing drug efficiency and efficacy, and controlling drug release. One possible strategy for targeted drug delivery is to use unique molecular markers such as folate receptors in cancer cells. In this work the cytotoxicity of a novel cyclodextrin-folate conjugate, 6-deoxy-6-[(1-(-2amino)ethylamino)folate-β-cyclodextrin (CDEnFA) was studied using the MTT assay and the MCF-7 (Breast), HeLa (Cervical), A549 (Lung cancer) …
The Evolving Role Of Dendritic Spines And Memory: Interaction(S) With Estradiol, M. Frankfurt, V. Luine
The Evolving Role Of Dendritic Spines And Memory: Interaction(S) With Estradiol, M. Frankfurt, V. Luine
Journal Articles
This article is part of a Special Issue "Estradiol and Cognition". Memory processing is presumed to depend on synaptic plasticity, which appears to have a role in mediating the acquisition, consolidation, and retention of memory. We have studied the relationship between estrogen, recognition memory, and dendritic spine density in the hippocampus and medial prefrontal cortex, areas critical for memory, across the lifespan in female rodents. The present paper reviews the literature on dendritic spine plasticity in mediating both short and long term memory, as well as the decreased memory that occurs with aging and Alzheimer's disease. It also addresses the …
Predicting Aqueous Solubility Of Pharmaceutical Agents By Solid Dispersion Prepared By Solvent Evaporation Method, Karthik Reddy Patlolla
Predicting Aqueous Solubility Of Pharmaceutical Agents By Solid Dispersion Prepared By Solvent Evaporation Method, Karthik Reddy Patlolla
University of the Pacific Theses and Dissertations
Solubility of active pharmaceutical agents is a crucial process that determines drug absorption and ultimately its bioavailability. Many of the new therapeutically beneficial compounds discovered are lipophilic requiring various solubility enhancement strategies to improve their solubility. Among these strategies, solubility enhancement using solid dispersions is a leading method. To obtain a desirable increase in the solubility of a poorly-soluble compound, a good understanding of the molecular descriptors influencing the enhancement of solubility is essential. Therefore, the major research objective was to determine the descriptors which significantly influence the solubility enhancement by solid dispersions. After enhancing the solubility of selected poorly-soluble …
Analysis Of Humira, Electro-Acupuncture, And Pulsatile Dry Cupping On Reducing Joint Inflammation In Patients With Rheumatoid Arthritis, Natalie Noll
AUCTUS: The Journal of Undergraduate Research and Creative Scholarship
Humira, an anti-TNF drug aimed at decreasing inflammation in Rheumatoid Arthritis patients, can cause skin diseases from rashes to skin cancer. Humira works by blocking the chemical receptor RANKL which inhibits the production of osteoclasts. Osteoclasts are cells that attack and eat bone and cartilage therefore an inhibitory mechanism would cause inflammation.. By analyzing Humira’s effect on the human body, Humira can be compared to other treatments such as electro-acupuncture and pulsatile dry cupping to determine the viability of these alternative treatment methods in regards to their abilities to decrease inflammation in Rheumatoid Arthritis patients through blocking RANKL. An analysis …
Curcumin: A Folklore Remedy From Kitchen On The Way To Clinic As Cancer Drug, Debasish Bandyopadhyay
Curcumin: A Folklore Remedy From Kitchen On The Way To Clinic As Cancer Drug, Debasish Bandyopadhyay
Chemistry Faculty Publications and Presentations
Numerous compounds are widely distributed in nature and many of these possess medicinal/biological/pharmacological activity. Curcumin, a polyphenol derived from the rhizomes (underground stems) of Curcuma longa Linn (a member of the ginger family, commonly known as turmeric) is a culinary spice and therapeutic used in India for thousands of years to induce color and flavor in food as well as to treat a wide array of diseases. The origin of turmeric as spice and folklore medicine is so old that it is lost in legend. Curcumin has many beneficial pharmacological effects which includes, but are not limited with, antimicrobial, anti-inflammatory, …
Engineering Approaches For Suppressing Deleterious Host Responses To Medical Implants, Connor Mccarthy
Engineering Approaches For Suppressing Deleterious Host Responses To Medical Implants, Connor Mccarthy
Dissertations, Master's Theses and Master's Reports
Small diameter (< 6 mm) vascular grafts suffer from serious deleterious effects not encountered with their larger diameter relatives, leading to premature graft failure through restenosis. Platelet activation, inflammation, and smooth muscle cell proliferation are leading contributors to thrombosis and neointimal hyperplasia, both contributors to the progression of restenosis. It may be possible to suppress negative biological responses to vascular implants through the modification of surface properties and incorporation of drug release into blood contacting materials. In this work, bioengineering approaches are presented to improve the biocompatibility of small diameter vascular grafts.
We demonstrate a novel engineering approach for incorporating natural, decollagenized elastin matrices into PEU 1074A reinforced vascular grafts through spray-coating and electrospinning processes in a manner that retains elastin’s excellent blood contacting properties. A vascular construct with excellent mechanical and surgical handling properties demonstrating the suppression of neointimal hyperplasia is presented after 21 days in vivo.
Nitric oxide (NO) has been investigated over the past several decades due to its platelet, inflammation, and smooth muscle cell suppressing effects; and if appropriately delivered, could positively mediate the contributors to restenosis. Here, we characterize a novel macrocyclic NO …
Drug Interactions With Glutaredoxin Orthologues, Kahlilah R. Napper, Thomas C. Leeper, Ram Khattri, Daniel Morris, Caroline Davis
Drug Interactions With Glutaredoxin Orthologues, Kahlilah R. Napper, Thomas C. Leeper, Ram Khattri, Daniel Morris, Caroline Davis
Williams Honors College, Honors Research Projects
Glutaredoxin, an enzymatic protein, is an important component of cell viability and function. It catalyzes reactions involved in DNA synthesis and innate immunity [1,4]. Glutaredoxin is also essential in antibiotic resistance in pathogenic bacterial species. Pseudomonas aeruginosa in particular is responsible for infecting the lung tissue of its human hosts, resulting in the development of pneumonia and cystic fibrosis [3]. Because glutaredoxin is pertinent in cell proliferation of eukaryotic and bacterial cells alike, medicinal fragments that take advantage of the subtle differences in protein structure of the orthologous proteins can be synthesized and enhanced to bind bacterial glutaredoxins, without inhibiting …
Polymer Interactions With Nucleic Acids Under Various Physiological Conditions, Matthew S. Obrzut
Polymer Interactions With Nucleic Acids Under Various Physiological Conditions, Matthew S. Obrzut
Williams Honors College, Honors Research Projects
The goal of this project is to improve our understanding of nucleic acid interactions with cationic polymers with the theory that the polymers could protect the nucleic acids from degradation caused by biological enzymes. We seek to understand what the limitations of the cationic polymers are which, in this case, is mainly polymer-DNA compatibility. This experiment utilized peptide-dextran hybrid polymers with differing functionalizations to condense anionic nucleic acids into nanometer-sized polyplexes. Techniques of dynamic light scattering and zeta-potential were utilized to determine the particle sizes and surface charges of polyplexes.
In this experiment, dextran with a molecular weight of 20 …
Characterization Of Stard4 And Stard6 Proteins In Human Ovarian Tissue And Human Granulosa Cells And Cloning Of Human Stard4 Transcripts, Aisha Shaaban
Theses and Dissertations
Progesterone is essential hormone for pregnancy, which is produced by the human corpus luteum in early pregnancy until the placenta assumes this function. Transport of the cholesterol from the outer to the inner mitochondrial membrane is the rate limiting step for the de novo synthesis of pregnenolone (the precursor to progesterone), a process mediated by STARD1. STARD1 contains a C-terminal lipid binding domain which binds cholesterol and an N-terminal domain targeting STARD1 to the mitochondrial membrane. Unlike STARD1, STARD4 and STARD6 proteins lack a mitochondrial targeting sequence; however, they can bind cholesterol and increase steroidogenesis in model systems. In this …
Sharp Rna Recognition Motif Optimizations, Extensions, And Mutations For Use In 2d And 3d Nmr Experiments, Shaun M. Christie
Sharp Rna Recognition Motif Optimizations, Extensions, And Mutations For Use In 2d And 3d Nmr Experiments, Shaun M. Christie
Williams Honors College, Honors Research Projects
SMRT/HDAC Associated Repressor Protein interacts with the long noncoding RNA, produced by SRA, by binding at the RRMs. Three projects were done to prepare the truncated proteins for use in 2D and 3D NMR experiments. The first focuses on RRM 3 and its optimization during the purification process. The second focuses on RRM 2-4, which was found to be missing two alpha helices that may be important for protein stability. These helices can also interact with RRM 3 as well due to the tight association of RRMs 3 and 4. The two step PCR extension of RRM 2-4 was assumed …
Mechanisms, Potential Therapies, And The Role Of Tgf-Β In The Formation Of Scars, Isaac Traube
Mechanisms, Potential Therapies, And The Role Of Tgf-Β In The Formation Of Scars, Isaac Traube
The Science Journal of the Lander College of Arts and Sciences
Scarring is the inevitable outcome of wound healing. This review looks at some of the underlying mechanisms of this complex process with the aim of identifying targets for therapeutic manipulation that could result in reduced scarring or even scarless wound repair. Fetal wounds are shown to heal without scars primarily due to low levels of TGF-β1 and TGF-β2 and high levels of TGF-β3 as compared to adult wounds which heal with scars. Abnormal excessive scarring in keloid and hypertrophic scars are also attributed to TGF-β. Clinical manipulation of TGF-β ratios showed promise as a therapeutic means of controlling scar formation. …
Is There A Link Between Saturated Fat Intake And Alzheimer’S Disease?, Justin Konig
Is There A Link Between Saturated Fat Intake And Alzheimer’S Disease?, Justin Konig
The Science Journal of the Lander College of Arts and Sciences
Alzheimer’s disease is a neurodegenerative disease that causes dementia and ultimately death. Currently, there is no treatment available for this disease. The aging of the population will only increase the incidence of Alzheimer’s disease, making it ever more important to find an effective method of prevention. Dietary intervention is a practical and affordable method of intervention. The brain is a fat rich organ, and dietary fats are critical for proper development of the brain. A literature review was conducted to determine whether there is a link between saturated fat intake and Alzheimer’s disease. According to the literature reviewed, saturated fat …
Possible Effects Of Nanosecond Pulsed Electric Fields On Proteins, Stephen J. Beebe
Possible Effects Of Nanosecond Pulsed Electric Fields On Proteins, Stephen J. Beebe
Bioelectrics Publications
No abstract provided.
Utilization Of Placebo Response In Double-Blind Psychopharmacological Studies, Contextual Perspective, Margarita Olegovna Ashirova
Utilization Of Placebo Response In Double-Blind Psychopharmacological Studies, Contextual Perspective, Margarita Olegovna Ashirova
Antioch University Dissertations & Theses
Placebo response has been an elusive phenomenon in the fields of medicine, medical research, and psychology. Even though it has been heavily utilized as a comparator treatment in double-blind psychopharmacological studies, the reliable definition and consistent understanding of placebo response are missing. In this contextual exploration, I outlined the state of current placebo response research and variable rates of placebo response reported in double-blind studies. I identified the gap in the literature—lack of consistent understanding of placebo response—that has led to a waste of resources by the psychopharmacological research industry. Further, I compared and contrasted the current inconsistent Western medical …
Target-Directed Biosynthetic Evolution: Redirecting Plant Evolution To Genomically Optimize A Plant’S Pharmacological Profile, Dustin Paul Brown
Target-Directed Biosynthetic Evolution: Redirecting Plant Evolution To Genomically Optimize A Plant’S Pharmacological Profile, Dustin Paul Brown
Theses and Dissertations--Neuroscience
The dissertation describes a novel method for plant drug discovery based on mutation and selection of plant cells. Despite the industry focus on chemical synthesis, plants remain a source of potent and complex bioactive metabolites. Many of these have evolved as defensive compounds targeted on key proteins in the CNS of herbivorous insects, for example the insect dopamine transporter (DAT). Because of homology with the human DAT protein some of these metabolites have high abuse potential, but others may be valuable in treating drug dependence. This dissertation redirects the evolution of a native Lobelia species toward metabolites with greater activity …
Chronic Behavioral And Cognitive Deficits In A Rat Survival Model Of Organophosphate Toxicity, Beverly Huang
Chronic Behavioral And Cognitive Deficits In A Rat Survival Model Of Organophosphate Toxicity, Beverly Huang
Theses and Dissertations
Organophosphates (OPs) are a major class of pesticides and nerve agents that elicit acute toxicity by inhibiting acetylcholinesterase (AChE), the enzyme responsible for the degradation of the neurotransmitter acetylcholine in the central and peripheral nervous systems. Acetylcholine accumulation following extensive AChE inhibition leads to an acute cholinergic syndrome characterized by autonomic dysfunction, involuntary movements, muscle fasciculations, respiratory distress, and seizures. Despite their classification as moderate to highly toxic, OP pesticides are the most widely used class of insecticides in the U.S., and are even more commonly used worldwide. Additionally, there is a growing concern that OP nerve agents could be …
Characterization Of A Novel Protease In Staphylococcus Aureus, Adam L. Johnson
Characterization Of A Novel Protease In Staphylococcus Aureus, Adam L. Johnson
Theses and Dissertations
A newly discovered cysteine protease, Prp, has been shown to perform an essential, site-specific cleavage of ribosomal protein L27 in Staphylococcus aureus. In Firmicutes and related bacteria, ribosomal protein L27 is encoded with a conserved N-terminal extension that must be removed to expose residues critical for ribosome function. Uncleavable and pre-cleaved variants were unable to complement an L27 deletion in S. aureus, indicating that this N-terminal processing event is essential and likely plays an important regulatory role. The gene encoding the responsible protease (prp) has been shown to be essential, and is found in all organisms …
Xlf-Dependent Nonhomologous End Joining Of Complex Dna Double-Strand Breaks With Proximal Thymine Glycol And Screening For Xrcc4-Xlf Interaction Inhibitors, Mohammed Al Mohaini
Xlf-Dependent Nonhomologous End Joining Of Complex Dna Double-Strand Breaks With Proximal Thymine Glycol And Screening For Xrcc4-Xlf Interaction Inhibitors, Mohammed Al Mohaini
Theses and Dissertations
DNA double-strand breaks induced by ionizing radiation are often accompanied by ancillary oxidative base damage that may prevent or delay their repair. In order to better define the features that make some DSBs repair-resistant, XLF-dependent nonhomologous end joining of blunt-ended DSB substrates having the oxidatively modified nonplanar base thymine glycol (Tg) at the first (Tg1) , second (Tg2), third (Tg3) or fifth (Tg5) positions from one 3’ terminus was examined in human whole-cell extracts. Tg at the third position had little effect on end-joining even when present on both ends of the break. However, Tg as the terminal or penultimate …
Total Synthesis Of Biologically Active Natural And Unnatural Products, Julia Heimberger
Total Synthesis Of Biologically Active Natural And Unnatural Products, Julia Heimberger
Electronic Theses and Dissertations
Herbarin A and B were isolated from the fungal strains of Cladosporium herbarum found in marine sponges Aplysina aerophoba and Callyspongia aerizusa. Total synthesis of Herbarin A and B was achieved by carrying out a multi-step synthesis approach, and the antioxidant properties were evaluated using FRAP assay. Toxicity of these compounds was determined using a zebrafish embryo model. Furthermore, synthesis of C-6 alkyl-azaarene derivatives of nucleosides by Csp3-H bond functionalization were investigated. Effective incorporation of 2-methylazaarene moiety at the C-6 position of the protected inosine nucleoside provided a new class of compounds with anticipated enhanced biological activity.
Use Of Donepezil In Alzheimer's Disease: Suggested Practice Guidelines, Tamara Berg
Use Of Donepezil In Alzheimer's Disease: Suggested Practice Guidelines, Tamara Berg
Physician Assistant Scholarly Project Posters
Alzheimer’s disease (AD) is the cause of 60-80% of dementia (2014 Alzheimer’s disease, 2014). AD is estimated to affect over 5 million people over age 65 in the US (2014 Alzheimer’s disease, 2014). With the onset of baby boomers reaching the age of 65 and increased longevity it is estimated that 16 million persons will have Alzheimer’s by 2050. Eighty two percent of persons with AD are over age 85. In 2014 AD is the 6th leading cause of death and the highest cost disease in the US. (2014 Alzheimer’s disease, 2014)
The predicted increase in prevalence and incidence of …