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Synthesis Of Selenotryptophan For Protein Elucidation, James P. Reiselman 2022 Belmont University

Synthesis Of Selenotryptophan For Protein Elucidation, James P. Reiselman

Belmont University Research Symposium (BURS)

Through complex intermolecular and intramolecular forces, proteins conformationally change to form complex 3-d geometry that carries out biochemical processes and mapping their structures is becoming a field of interest in the biological community. Techniques for modeling protein’s structure typically follow the path of X-ray crystallography, which has an intrinsic phase problem that can make reading the electron density map they produce very difficult. This can be mitigated by appending a heavy-atom containing amino acid analogue into a crystal sample of the protein being studied. A selenium containing tryptophan analogue will be synthesized to be appended into proteins as a ...


Characterization Of Nanoparticles Using Inductively-Coupled Plasma Mass Spectrometry, Jabez D. Campbell 2022 Missouri State University

Characterization Of Nanoparticles Using Inductively-Coupled Plasma Mass Spectrometry, Jabez D. Campbell

MSU Graduate Theses

Nanomaterials are a relatively new class of materials that have many applications which span a wide host of fields from medical products to consumer products. The possible compositions and forms of nanomaterials are just as varied as the applications. Therefore, a versatile characterization method is needed for researchers and regulators alike to ensure nanomaterials are properly used. Single Particle Inductively Coupled Plasma Mass Spectrometry (SP-ICP-MS) is a functional method that could fill the characterization need in the nanomaterial research field. Using data from both SP-ICP-MS tests and data from literature established characterization methods, the viability of making SP-ICP-MS the standard ...


21°C Is The Emerging Ideal Temperature For Kidney Preservation In The Presence Of Hydrogen Sulfide, Smriti Juriasingani 2021 The University of Western Ontario

21°C Is The Emerging Ideal Temperature For Kidney Preservation In The Presence Of Hydrogen Sulfide, Smriti Juriasingani

Electronic Thesis and Dissertation Repository

Kidney transplantation is the treatment of choice for patients with end-stage kidney disease. However, the shortage of transplantable kidneys has led to ever-increasing waiting lists. As a result, kidneys obtained via donation after cardiac death (DCD) are being used more frequently for transplantation. However, they exhibit poorer outcomes due to ischemia-reperfusion injury (IRI) and cold preservation methods, such as static cold storage (SCS). Supplementing cold preservation solutions with hydrogen sulfide donors, such as AP39, has been shown to improve renal IRI and graft outcomes, but the injury associated with cold preservation remains. This thesis evaluates the effect of subnormothermic kidney ...


Investigations Involving Mononuclear And Dinuclear Transition Metal Catalysts For Photochemical Carbon Dioxide Reduction, Ansu Edwards 2021 University of Mississippi

Investigations Involving Mononuclear And Dinuclear Transition Metal Catalysts For Photochemical Carbon Dioxide Reduction, Ansu Edwards

Honors Theses

There is currently a global energy crisis, which is in desperate need of solutions. New energy sources are required that will not pollute as much as our longstanding reliance on nonrenewable fossil fuels as an energy source. This pollution involves large amounts of greenhouse gas emissions, predominantly carbon dioxide (CO2), that contribute to environmental problems such as climate change. In this context, a fairly recent research direction to address this problem is the development of transition metal catalysts that can convert CO2 into reduced carbon products that can serve as chemical fuels. This work focuses on the synthesis ...


Hydrogen Peroxide Colitis: The Accidental Enema, Ramin Karimi, Ashish Sharma, Kevin Tran, Sebastian Montgomery 2021 Coliseum Medical Center

Hydrogen Peroxide Colitis: The Accidental Enema, Ramin Karimi, Ashish Sharma, Kevin Tran, Sebastian Montgomery

HCA Healthcare Journal of Medicine

Chemical colitis is defined as inflammation of the large intestine or colon as a result of exposure from a harsh chemical through an enema or other procedure. In this case, the chemical is hydrogen peroxide, which is commonly used as an antiseptic for minor abrasions. Hydrogen peroxide enemas were once popular for difficult to treat constipation. However, resultant colitis and proctitis limited its use. When administered rectally in a high enough concentration, intense abdominal pain and transient bloody diarrhea can occur, with the majority of affected patients making a full recovery with supportive management. Here we discuss a case of ...


Identifying The Cardiovascular Effects Of Multiple Pollutants., Katlyn Elizabeth McGraw 2021 University of Louisville

Identifying The Cardiovascular Effects Of Multiple Pollutants., Katlyn Elizabeth Mcgraw

Electronic Theses and Dissertations

Cardiovascular disease (CVD) is the leading cause of death from environmental exposures. Although exposure to PM2.5 is an established risk factor for CVD, the contribution of other hazardous pollutant exposure to CVD is less clear. Overall, this work aimed to examine the effect of pollutants with lesser documented effects on cardiovascular disease using a multi-pronged approach to exposure assessment. The three aims were to examine the relationship between county-level toxic chemical releases and CVD mortality in the contiguous United States between 2002 and 2012, to assess the relationship between individual-level VOC metabolites and vascular function, and to build ...


‘Am I Turning Into A Man?’ Experiences Of Pakistani Women With Pcos, Rida e Zehra Zaidi 2019 Institute of Business Administration

‘Am I Turning Into A Man?’ Experiences Of Pakistani Women With Pcos, Rida E Zehra Zaidi

MSJ Capstone Projects

According to the National Institutes of Health, 20 – 25% of all regularly ovulating women have PCOS. This disorder has a range of visible symptoms including excessive weight gain, hirsutism, acne, and hair loss among others. These symptoms make it difficult for women with the syndrome to fit the femininity ideals of the society, as it demands female bodies to be slim, smart, hair less, and to have porcelain skin and regular menstrual cycles. Women with PCOS and other health problems in Pakistan spend all their lives fighting unnecessary battles. This struggle has severe impacts on their physical and mental well-being.


Leaving Ligand Effects On Reactivity And Solubility Of Monofunctional Platinum(Ii) Anticancer Complexes, Heidi Linn Hruska Millay 2019 Western Kentucky University

Leaving Ligand Effects On Reactivity And Solubility Of Monofunctional Platinum(Ii) Anticancer Complexes, Heidi Linn Hruska Millay

Masters Theses & Specialist Projects

Monofunctional platinum(II) complexes, such as phenanthriplatin and pyriplatin, have notably different characteristics from the bifunctional anticancer complexes, such as cisplatin and oxaliplatin, which have detrimental toxicities and resistance associated with them. The unique properties of the monofunctional complexes may be exploited to target cancer cells without producing the toxic side effects associated with the current FDA-approved platinum-based anticancer drugs. To advance the understanding of these monofunctional platinum(II) complexes, this study replaced the chloride leaving ligand with an acetate group, which should increase solubility and alter the rate of reactivity with key amino acid and nucleotide targets. Phenanthriplatin and ...


Interaction Of A Platinum Triamine Complex Having A Seven-Membered Chelate Ring With N-Acetyl-Lmethionine And Guanosine 5'-Monophosphate, Jae Ko 2019 Western Kentucky University

Interaction Of A Platinum Triamine Complex Having A Seven-Membered Chelate Ring With N-Acetyl-Lmethionine And Guanosine 5'-Monophosphate, Jae Ko

Masters Theses & Specialist Projects

In the 1960s, Rosenberg and his colleagues confirmed the anti-cancer activity of cisplatin. Although cisplatin was capable of killing testicular cancer cells there were also serious side effects. It was necessary to find alternate ways of overcoming side effects, and soon many researchers have discovered novel platinum compounds that show similar reactivity. Recently, replacing one chloride group to a heterocyclic amine group showed significant cytotoxicity with a different binding activity than cisplatin. Previously in our lab, [Pt(Me5dien)(NO3)]+ and [Pt(Et2dien)Cl]+ have been synthesized and reacted with NAcetyl- L-methionine (N-AcMet) and Guanosine 5’-monophosphate (5’-GMP) showed unusual ...


Synthesis, Characterization, And Evaluation Of Metal Complexes With Cancer Selective Anti-Proliferative Effects And Hydrogen Evolution Catalytic Properties., Nicholas Vishnosky 2019 University of Louisville

Synthesis, Characterization, And Evaluation Of Metal Complexes With Cancer Selective Anti-Proliferative Effects And Hydrogen Evolution Catalytic Properties., Nicholas Vishnosky

Electronic Theses and Dissertations

Bis-thiosemicarbazones (BTSC) and their metal chelates have properties that are useful in several different scientific fields. These systems have already received attention in major fields of biology and engineering. Hydrogen evolution reaction (HER) catalysts need to be cheap and operate under minimal overpotentials with a long lifetime. The treatment of cancer requires, novel agents that have potent cytotoxic activity against cancer cells while displaying minimal side effects. In this dissertation the modular synthesis of these bis-thiosemicarbazone systems is utilized to regulate the redox chemistry for employment in the desired sector of chemistry. The ligand and metal chelates synthesized were characterized ...


Synthesis Of A Zn(Ii)-Responsive Paracest Mri Agent For Improved Diagnosis Of Prostate Cancer, Megan Martin, Holly Clancy 2019 The University of San Francisco

Synthesis Of A Zn(Ii)-Responsive Paracest Mri Agent For Improved Diagnosis Of Prostate Cancer, Megan Martin, Holly Clancy

Creative Activity and Research Day - CARD

In the United States, prostate cancer is the leading type of cancer diagnosed in men. Prostate cancer is currently diagnosed with the Prostate-Specific Antigen (PSA) test; however, it leads to many false positives and therefore unneeded biopsies. Previous studies have shown that cancerous prostates have a much lower concentration of zinc than healthy prostates. The goal of this project is to create an MRI contrast agent capable of non-invasively quantifying zinc in the human prostate. Five out of the eight synthetic steps have been successfully completed so far, and the identities of these intermediate products have been verified by 1 ...


Impact Of Quinoline Amide Substituents On The Luminescence And Paracest Mri Properties Of Bimodal Europium (Iii) Complexes, Brooke Aloe, Marisa Poveda, Osasere M. Evbuomwan 2019 The University of San Francisco

Impact Of Quinoline Amide Substituents On The Luminescence And Paracest Mri Properties Of Bimodal Europium (Iii) Complexes, Brooke Aloe, Marisa Poveda, Osasere M. Evbuomwan

Creative Activity and Research Day - CARD

Lanthanide ions exhibit optical imaging properties; however, the amount of energy needed to directly excite these ions could potentially be damaging to biological tissue. To overcome this limitation, organic chromophores, such as quinolines, can be used to absorb the excited light and transfer the energy obtained to the attached lanthanide ion. This intramolecular energy transfer results in the sensitization of the lanthanide ion luminescence. The goal of this project is to assess how the amide proton position in relation to the quinoline substituent affects the sensitivity of luminescence and the optical imaging properties of Europium (III) complexes. To achieve this ...


Peptide Functionalized Surfactant Msns, Sonia Barrett 2019 Kansas State University Libraries

Peptide Functionalized Surfactant Msns, Sonia Barrett

Kansas State University Undergraduate Research Conference

Antibiotic resistance in bacteria has become a rising problem since the first antibiotic was created, further aggravated by the improper overuse to treat common infections, because of this pharmaceutical companies must keep making new and stronger antibiotics. Surfactants are plentiful and effective killers of many surface bacteria and are also varied in their structure, all have a hydrophilic head and long hydrophobic carbon chain. These long hydrophobic carbon chains can pierce through the lipid bilayers that make up bacteria cell membranes and cause cytoplasmic leakage and lysis of the cell wall, leading to cell death. One proposed surfactant is synthesized ...


Caspases And Cancer: Connections Through Circular Dichroism Spectroscopy, Sarah M. Hethcox 2019 Georgia Southern University

Caspases And Cancer: Connections Through Circular Dichroism Spectroscopy, Sarah M. Hethcox

Honors College Theses

While excessive cell death inevitably leads to negative effects, the endurance of damaged cells in the presence of death signals can be equally detrimental to health. Apoptosis, or programmed cell death, is a highly regulated process in which cues from within or from outside a cell can trigger an irreversible sequence of signals that carry out cell destruction known as the apoptotic cascade. A group of enzymes called caspases play a vital role in this cascade with some participating as initiators and others acting as effectors of protein cleavage and intracellular breakdown. Although it is normal for the activity of ...


Manganese Influx And Expression Of Zip8 Is Essential In Primary Myoblasts And Contributes To Activation Of Sod2 [Preprint], Shellaina J. V. Gordon, Daniel E. Fenker, Katherine E. Vest, Teresita Padilla-Benavides 2018 University of Massachusetts Medical School

Manganese Influx And Expression Of Zip8 Is Essential In Primary Myoblasts And Contributes To Activation Of Sod2 [Preprint], Shellaina J. V. Gordon, Daniel E. Fenker, Katherine E. Vest, Teresita Padilla-Benavides

UMass Chan Medical School Faculty Publications

Trace elements such as copper (Cu), zinc (Zn), iron (Fe), and manganese (Mn) are enzyme cofactors and second messengers in cell signaling. Trace elements are emerging as key regulators of differentiation and development of mammalian tissues including blood, brain, and skeletal muscle. We previously reported an influx of Cu and dynamic expression of various metal transporters during differentiation of skeletal muscle cells. Here, we demonstrate that during differentiation of skeletal myoblasts an increase of additional trace elements such as Mn, Fe and Zn occurs. Interestingly the Mn increase is concomitant with increased Mn-dependent SOD2 levels. To better understand the Mn ...


Prevalence And Management Of Iron Overload In Pyruvate Kinase Deficiency: Report From The Pyruvate Kinase Deficiency Natural History Study, Eduard J. van Beers, Peter E. Newburger, Rachael F. Grace 2018 University Medical Center Utrecht

Prevalence And Management Of Iron Overload In Pyruvate Kinase Deficiency: Report From The Pyruvate Kinase Deficiency Natural History Study, Eduard J. Van Beers, Peter E. Newburger, Rachael F. Grace

Open Access Publications by UMass Chan Authors

Pyruvate kinase (PK) deficiency is the most common red cell glycolytic enzyme defect causing hereditary non-spherocytic hemolytic anemia. Current treatments are mainly supportive and include red cell transfusions and splenectomy.11 Regular red cell transfusions are known to result in iron overload; however, the prevalence and spectrum of transfusion-independent iron overload in the overall PK deficient population has not been well defined. This analysis describes the prevalence and clinical characteristics of iron overload in patients enrolled in the PK Deficiency Natural History Study (NHS) with a focus on those patients who are not regularly transfused.2


Distribution And Localization Of Novel Iodine Nanoparticles In The Human Glioma 1242 Growing In The Brains Of Mice, Benjamin Billings 2018 University of Connecticut

Distribution And Localization Of Novel Iodine Nanoparticles In The Human Glioma 1242 Growing In The Brains Of Mice, Benjamin Billings

Honors Scholar Theses

Observing and designing the in vivo distribution and localization of therapeutic nanoparticles is an essential aspect of developing and understanding novel nanoparticle- based medical treatments. This study investigates novel PEGylated Iodine-based nanoparticles (INPs), an alternate composition to the more widely researched gold nanoparticles (AuNPs), which may help avoid adverse effects associated with AuNPs, such as potential toxicity and skin discoloration, when used in similar applications. Determining the localization of the novel INPs within murine brains containing human glioma U-1242MG cells is critical in assisting the development of radiation dose enhancement therapy for this aggressive cancer. Radiation dose enhancement utilizes the ...


What Are The Characteristics Of Vitamin D Metabolism In Opioid Dependence? An Exploratory Longitudinal Study In Australian Primary Care, Albert Stuart Reece, Gary Hulse 2018 Edith Cowan University

What Are The Characteristics Of Vitamin D Metabolism In Opioid Dependence? An Exploratory Longitudinal Study In Australian Primary Care, Albert Stuart Reece, Gary Hulse

Research outputs 2014 to 2021

OBJECTIVE: Compare vitamin D levels in opioid dependence and control population and adjust for relevant confounding effects. Nuclear hormone receptors (including the vitamin D receptor) have been shown to be key transducers and regulators of intracellular metabolism and comprise an important site of pathophysiological immune and metabolic dysregulation potentially contributing towards pro-ageing changes observed in opioid-dependent patients (ODPs).

DESIGN: Longitudinal prospective comparing ODPs with general medical controls (GMCs).

SETTING: Primary care.

PARTICIPANTS: Prospective review comparing 1168 ODP (72.5% men) and 415 GMC (51.6% men, p

INTERVENTIONS: Nil. Observational study only.

PRIMARY AND SECONDARY OUTCOMES: Serum vitamin D levels ...


The Effects Of Emerging Technology On Healthcare And The Difficulties Of Integration, Skyler J. Pavlish-Carpenter 2018 University of Central Florida

The Effects Of Emerging Technology On Healthcare And The Difficulties Of Integration, Skyler J. Pavlish-Carpenter

Honors Undergraduate Theses

Background: Disruptive technology describes technology that is significantly more advanced than previous iterations, such as: 3D printing, genetic manipulation, stem cell research, innovative surgical procedures, and computer-based charting software. These technologies often require extensive overhauls to implement into older systems and must overcome many difficult financial and societal complications before they can be widely used. In a field like healthcare that makes frequent advancements, these difficulties can mean that the technology will not be utilized to its full potential or implemented at all.

Objective: To determine the inhibiting factors that prevent disruptive technology from being implemented in conventional healthcare.

Methods ...


Fabrication And Modification Of Titania Nanotube Arrays For Harvesting Solar Energy And Drug Delivery Applications, Ahmed El Ruby Abdel Rahman Mohamed 2017 The Universty of Western Ontario

Fabrication And Modification Of Titania Nanotube Arrays For Harvesting Solar Energy And Drug Delivery Applications, Ahmed El Ruby Abdel Rahman Mohamed

Electronic Thesis and Dissertation Repository

The fast diminishing of fossil fuels in the near future, as well as the global warming caused by increasing greenhouse gases have motivated the urgent quest to develop advanced materials as cost-effective photoanodes for solar light harvesting and many other photocatalytic applications. Recently, titania nanotube arrays (TNTAs) fabricated by anodization process has attracted great interest due to their excellent properties such as: high surface area, vertically oriented, highly organized, one-dimensional, nanotubular structure, photoactivity, chemical stability and biocompatibility. This unique combination of excellent properties makes TNTAs an excellent photoanode for solar light harvesting. However, the relatively wide band gap energy of ...


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